Merge AudioServices into mainline.

40 files changed, 10133 insertions, 0 deletions

diff --git a/src/multimedia/audio/audio.pri b/src/multimedia/audio/audio.pri
new file mode 100644
index 0000000..3ddb23b
--- /dev/null
+++ b/src/multimedia/audio/audio.pri
@@ -0,0 +1,56 @@
+HEADERS += $$PWD/qaudio.h \
+           $$PWD/qaudioformat.h \
+           $$PWD/qaudioinput.h \
+           $$PWD/qaudiooutput.h \
+           $$PWD/qaudiodeviceinfo.h \
+           $$PWD/qaudioengineplugin.h \
+           $$PWD/qaudioengine.h \
+           $$PWD/qaudiodevicefactory_p.h \
+           $$PWD/qaudiodeviceid.h \
+           $$PWD/qaudiodeviceid_p.h
+
+
+SOURCES += $$PWD/qaudio.cpp \
+           $$PWD/qaudioformat.cpp  \
+           $$PWD/qaudiodeviceinfo.cpp \
+           $$PWD/qaudiooutput.cpp \
+           $$PWD/qaudioinput.cpp \
+           $$PWD/qaudioengineplugin.cpp \
+           $$PWD/qaudioengine.cpp \
+           $$PWD/qaudiodevicefactory.cpp \
+           $$PWD/qaudiodeviceid.cpp
+
+mac {
+    HEADERS +=  $$PWD/qaudioinput_mac_p.h \
+                $$PWD/qaudiooutput_mac_p.h \
+                $$PWD/qaudiodeviceinfo_mac_p.h \
+                $$PWD/qaudio_mac_p.h
+
+    SOURCES += $$PWD/qaudiodeviceinfo_mac_p.cpp \
+               $$PWD/qaudiooutput_mac_p.cpp \
+               $$PWD/qaudioinput_mac_p.cpp \
+               $$PWD/qaudio_mac.cpp
+
+    LIBS += -framework CoreAudio -framework AudioUnit -framework AudioToolbox
+
+} else:win32 {
+
+    HEADERS += $$PWD/qaudioinput_win32_p.h $$PWD/qaudiooutput_win32_p.h $$PWD/qaudiodeviceinfo_win32_p.h
+    SOURCES += $$PWD/qaudiodeviceinfo_win32_p.cpp \
+               $$PWD/qaudiooutput_win32_p.cpp \
+               $$PWD/qaudioinput_win32_p.cpp
+    !wince*:LIBS += -lwinmm
+    wince*:LIBS += -lcoredll
+
+} else:unix {
+    unix:contains(QT_CONFIG, alsa) {
+        linux-*|freebsd-*|openbsd-*:{
+            DEFINES += HAS_ALSA
+            HEADERS += $$PWD/qaudiooutput_alsa_p.h $$PWD/qaudioinput_alsa_p.h $$PWD/qaudiodeviceinfo_alsa_p.h
+            SOURCES += $$PWD/qaudiodeviceinfo_alsa_p.cpp \
+                   $$PWD/qaudiooutput_alsa_p.cpp \
+                   $$PWD/qaudioinput_alsa_p.cpp
+            LIBS += -lasound
+        }
+    }
+}
diff --git a/src/multimedia/audio/qaudio.cpp b/src/multimedia/audio/qaudio.cpp
new file mode 100644
index 0000000..5ba6493
--- /dev/null
+++ b/src/multimedia/audio/qaudio.cpp
@@ -0,0 +1,102 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include <QtMultimedia/qaudio.h>
+
+
+QT_BEGIN_NAMESPACE
+
+namespace QAudio
+{
+
+class RegisterMetaTypes
+{
+public:
+    RegisterMetaTypes()
+    {
+        qRegisterMetaType<QAudio::Error>();
+        qRegisterMetaType<QAudio::State>();
+        qRegisterMetaType<QAudio::Mode>();
+    }
+
+} _register;
+
+}
+
+/*!
+    \namespace QAudio
+    \brief The QAudio namespace contains enums used by the audio classes.
+    \since 4.6
+*/
+
+/*!
+    \enum QAudio::Error
+
+    \value NoError       No errors have occurred
+    \value OpenError     An error opening the audio device
+    \value IOError       An error occurred during read/write of audio device
+    \value UnderrunError Audio data is not being fed to the audio device at a fast enough rate
+    \value FatalError    A non-recoverable error has occurred, the audio device is not usable at this time.
+*/
+
+/*!
+    \enum QAudio::State
+
+    \value ActiveState   Audio data is being processed, this state is set after start() is called
+                         and while audio data is available to be processed.
+    \value SuspendState  The audio device is in a suspended state, this state will only be entered
+                         after suspend() is called.
+    \value StopState     The audio device is closed, not processing any audio data
+    \value IdleState     The QIODevice passed in has no data and audio system's buffer is empty, this state
+                         is set after start() is called and while no audio data is available to be processed.
+*/
+
+/*!
+    \enum QAudio::Mode
+
+    \value AudioOutput   audio output device
+    \value AudioInput    audio input device
+*/
+
+
+QT_END_NAMESPACE
+
diff --git a/src/multimedia/audio/qaudio.h b/src/multimedia/audio/qaudio.h
new file mode 100644
index 0000000..b996cc6
--- /dev/null
+++ b/src/multimedia/audio/qaudio.h
@@ -0,0 +1,71 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#ifndef QAUDIO_H
+#define QAUDIO_H
+
+
+#include <QtCore/qglobal.h>
+#include <QtCore/qmetatype.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Multimedia)
+
+namespace QAudio
+{
+    enum Error { NoError, OpenError, IOError, UnderrunError, FatalError };
+    enum State { ActiveState, SuspendState, StopState, IdleState };
+    enum Mode { AudioInput, AudioOutput };
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+Q_DECLARE_METATYPE(QAudio::Error);
+Q_DECLARE_METATYPE(QAudio::State);
+Q_DECLARE_METATYPE(QAudio::Mode);
+
+#endif // QAUDIO_H
diff --git a/src/multimedia/audio/qaudio_mac.cpp b/src/multimedia/audio/qaudio_mac.cpp
new file mode 100644
index 0000000..cfa7ca3
--- /dev/null
+++ b/src/multimedia/audio/qaudio_mac.cpp
@@ -0,0 +1,142 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include "qaudio_mac_p.h"
+
+QT_BEGIN_NAMESPACE
+
+// Debugging
+QDebug operator<<(QDebug dbg, const QAudioFormat& audioFormat)
+{
+    dbg.nospace() << "QAudioFormat(" <<
+            audioFormat.frequency() << "," <<
+            audioFormat.channels() << "," <<
+            audioFormat.sampleSize()<< "," <<
+            audioFormat.codec() << "," <<
+            audioFormat.byteOrder() << "," <<
+            audioFormat.sampleType() << ")";
+
+    return dbg.space();
+}
+
+
+// Conversion
+QAudioFormat toQAudioFormat(AudioStreamBasicDescription const& sf)
+{
+    QAudioFormat    audioFormat;
+
+    audioFormat.setFrequency(sf.mSampleRate);
+    audioFormat.setChannels(sf.mChannelsPerFrame);
+    audioFormat.setSampleSize(sf.mBitsPerChannel);
+    audioFormat.setCodec(QString::fromLatin1("audio/pcm"));
+    audioFormat.setByteOrder(sf.mFormatFlags & kLinearPCMFormatFlagIsBigEndian != 0 ? QAudioFormat::BigEndian : QAudioFormat::LittleEndian);
+    QAudioFormat::SampleType type = QAudioFormat::UnSignedInt;
+    if ((sf.mFormatFlags & kLinearPCMFormatFlagIsSignedInteger) != 0)
+        type = QAudioFormat::SignedInt;
+    else if ((sf.mFormatFlags & kLinearPCMFormatFlagIsFloat) != 0)
+        type = QAudioFormat::Float;
+    audioFormat.setSampleType(type);
+
+    return audioFormat;
+}
+
+AudioStreamBasicDescription toAudioStreamBasicDescription(QAudioFormat const& audioFormat)
+{
+    AudioStreamBasicDescription sf;
+
+    sf.mFormatFlags         = kAudioFormatFlagIsPacked;
+    sf.mSampleRate          = audioFormat.frequency();
+    sf.mFramesPerPacket     = 1;
+    sf.mChannelsPerFrame    = audioFormat.channels();
+    sf.mBitsPerChannel      = audioFormat.sampleSize();
+    sf.mBytesPerFrame       = sf.mChannelsPerFrame * (sf.mBitsPerChannel / 8);
+    sf.mBytesPerPacket      = sf.mFramesPerPacket * sf.mBytesPerFrame;
+    sf.mFormatID            = kAudioFormatLinearPCM;
+
+    switch (audioFormat.sampleType()) {
+    case QAudioFormat::SignedInt: sf.mFormatFlags |= kAudioFormatFlagIsSignedInteger; break;
+    case QAudioFormat::UnSignedInt: /* default */ break;
+    case QAudioFormat::Float: sf.mFormatFlags |= kAudioFormatFlagIsFloat; break;
+    case QAudioFormat::Unknown:  default: break;
+    }
+
+    return sf;
+}
+
+// QAudioRingBuffer
+QAudioRingBuffer::QAudioRingBuffer(int bufferSize):
+    m_bufferSize(bufferSize)
+{
+    m_buffer = new char[m_bufferSize];
+    reset();
+}
+
+QAudioRingBuffer::~QAudioRingBuffer()
+{
+    delete m_buffer;
+}
+
+int QAudioRingBuffer::used() const
+{
+    return m_bufferUsed;
+}
+
+int QAudioRingBuffer::free() const
+{
+    return m_bufferSize - m_bufferUsed;
+}
+
+int QAudioRingBuffer::size() const
+{
+    return m_bufferSize;
+}
+
+void QAudioRingBuffer::reset()
+{
+    m_readPos = 0;
+    m_writePos = 0;
+    m_bufferUsed = 0;
+}
+
+QT_END_NAMESPACE
+
+
diff --git a/src/multimedia/audio/qaudio_mac_p.h b/src/multimedia/audio/qaudio_mac_p.h
new file mode 100644
index 0000000..8e2d522
--- /dev/null
+++ b/src/multimedia/audio/qaudio_mac_p.h
@@ -0,0 +1,144 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+
+#ifndef QAUDIO_MAC_P_H
+#define QAUDIO_MAC_P_H
+
+#include <CoreAudio/CoreAudio.h>
+
+#include <QtCore/qdebug.h>
+#include <QtCore/qatomic.h>
+
+#include <QtMultimedia/qaudioformat.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Multimedia)
+
+
+extern QDebug operator<<(QDebug dbg, const QAudioFormat& audioFormat);
+
+extern QAudioFormat toQAudioFormat(const AudioStreamBasicDescription& streamFormat);
+extern AudioStreamBasicDescription toAudioStreamBasicDescription(QAudioFormat const& audioFormat);
+
+class QAudioRingBuffer
+{
+public:
+    typedef QPair<char*, int> Region;
+
+    QAudioRingBuffer(int bufferSize);
+    ~QAudioRingBuffer();
+
+    Region acquireReadRegion(int size)
+    {
+        const int used = m_bufferUsed.fetchAndAddAcquire(0);
+
+        if (used > 0) {
+            const int readSize = qMin(size, qMin(m_bufferSize - m_readPos, used));
+
+            return readSize > 0 ? Region(m_buffer + m_readPos, readSize) : Region(0, 0);
+        }
+
+        return Region(0, 0);
+    }
+
+    void releaseReadRegion(Region const& region)
+    {
+        m_readPos = (m_readPos + region.second) % m_bufferSize;
+
+        m_bufferUsed.fetchAndAddRelease(-region.second);
+    }
+
+    Region acquireWriteRegion(int size)
+    {
+        const int free = m_bufferSize - m_bufferUsed.fetchAndAddAcquire(0);
+
+        if (free > 0) {
+            const int writeSize = qMin(size, qMin(m_bufferSize - m_writePos, free));
+
+            return writeSize > 0 ? Region(m_buffer + m_writePos, writeSize) : Region(0, 0);
+        }
+
+        return Region(0, 0);
+    }
+
+    void releaseWriteRegion(Region const& region)
+    {
+        m_writePos = (m_writePos + region.second) % m_bufferSize;
+
+        m_bufferUsed.fetchAndAddRelease(region.second);
+    }
+
+    int used() const;
+    int free() const;
+    int size() const;
+
+    void reset();
+
+private:
+    int     m_bufferSize;
+    int     m_readPos;
+    int     m_writePos;
+    char*   m_buffer;
+    QAtomicInt  m_bufferUsed;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif  // QAUDIO_MAC_P_H
+
+
diff --git a/src/multimedia/audio/qaudiodevicefactory.cpp b/src/multimedia/audio/qaudiodevicefactory.cpp
new file mode 100644
index 0000000..35e9c91
--- /dev/null
+++ b/src/multimedia/audio/qaudiodevicefactory.cpp
@@ -0,0 +1,250 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/qdebug.h>
+#include <QtMultimedia/qaudioengine.h>
+#include <QtMultimedia/qaudioengineplugin.h>
+#include <private/qfactoryloader_p.h>
+#include "qaudiodevicefactory_p.h"
+#include "qaudiodeviceid_p.h"
+
+#if defined(Q_OS_WIN)
+#include "qaudiodeviceinfo_win32_p.h"
+#include "qaudiooutput_win32_p.h"
+#include "qaudioinput_win32_p.h"
+#elif defined(Q_OS_MAC)
+#include "qaudiodeviceinfo_mac_p.h"
+#include "qaudiooutput_mac_p.h"
+#include "qaudioinput_mac_p.h"
+#elif defined(HAS_ALSA)
+#include "qaudiodeviceinfo_alsa_p.h"
+#include "qaudiooutput_alsa_p.h"
+#include "qaudioinput_alsa_p.h"
+#endif
+
+QT_BEGIN_NAMESPACE
+
+Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
+        (QAudioEngineFactoryInterface_iid, QLatin1String("/audio"), Qt::CaseInsensitive))
+
+
+class QNullDeviceInfo : public QAbstractAudioDeviceInfo
+{
+public:
+    QAudioFormat preferredFormat() const { qWarning()<<"using null deviceinfo, none available"; return QAudioFormat(); }
+    bool isFormatSupported(const QAudioFormat& ) const { return false; }
+    QAudioFormat nearestFormat(const QAudioFormat& ) const { return QAudioFormat(); }
+    QString deviceName() const { return QString(); }
+    QStringList codecList() { return QStringList(); }
+    QList<int> frequencyList()  { return QList<int>(); }
+    QList<int> channelsList() { return QList<int>(); }
+    QList<int> sampleSizeList() { return QList<int>(); }
+    QList<QAudioFormat::Endian> byteOrderList() { return QList<QAudioFormat::Endian>(); }
+    QList<QAudioFormat::SampleType> sampleTypeList() { return QList<QAudioFormat::SampleType>(); }
+};
+
+class QNullInputDevice : public QAbstractAudioInput
+{
+public:
+    QIODevice* start(QIODevice* ) { qWarning()<<"using null input device, none available"; return 0; }
+    void stop() {}
+    void reset() {}
+    void suspend() {}
+    void resume() {}
+    int bytesReady() const { return 0; }
+    int periodSize() const { return 0; }
+    void setBufferSize(int ) {}
+    int bufferSize() const  { return 0; }
+    void setNotifyInterval(int ) {}
+    int notifyInterval() const { return 0; }
+    qint64 totalTime() const { return 0; }
+    qint64 clock() const { return 0; }
+    QAudio::Error error() const { return QAudio::OpenError; }
+    QAudio::State state() const { return QAudio::StopState; }
+    QAudioFormat format() const { return QAudioFormat(); }
+};
+
+class QNullOutputDevice : public QAbstractAudioOutput
+{
+public:
+    QIODevice* start(QIODevice* ) { qWarning()<<"using null output device, none available"; return 0; }
+    void stop() {}
+    void reset() {}
+    void suspend() {}
+    void resume() {}
+    int bytesFree() const { return 0; }
+    int periodSize() const { return 0; }
+    void setBufferSize(int ) {}
+    int bufferSize() const  { return 0; }
+    void setNotifyInterval(int ) {}
+    int notifyInterval() const { return 0; }
+    qint64 totalTime() const { return 0; }
+    qint64 clock() const { return 0; }
+    QAudio::Error error() const { return QAudio::OpenError; }
+    QAudio::State state() const { return QAudio::StopState; }
+    QAudioFormat format() const { return QAudioFormat(); }
+};
+
+QList<QAudioDeviceId> QAudioDeviceFactory::deviceList(QAudio::Mode mode)
+{
+    QList<QAudioDeviceId> devices;
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA))
+    foreach (const QByteArray &handle, QAudioDeviceInfoPrivate::deviceList(mode))
+        devices += createDeviceId(QLatin1String("builtin"), mode, handle);
+#endif
+    QFactoryLoader* l = loader();
+
+    foreach (QString const& key, l->keys()) {
+        QAudioEngineFactoryInterface* plugin = qobject_cast<QAudioEngineFactoryInterface*>(l->instance(key));
+        if (plugin) {
+            foreach (QByteArray const& handle, plugin->deviceList(mode))
+                devices += createDeviceId(key, mode, handle);
+        }
+
+        delete plugin;
+    }
+
+    return devices;
+}
+
+QAudioDeviceId QAudioDeviceFactory::defaultInputDevice()
+{
+    QAudioEngineFactoryInterface* plugin = qobject_cast<QAudioEngineFactoryInterface*>(loader()->instance(QLatin1String("default")));
+
+    if (plugin) {
+        QList<QByteArray> list = plugin->deviceList(QAudio::AudioInput);
+        if (list.size() > 0)
+            return createDeviceId(QLatin1String("default"), QAudio::AudioInput, list.at(0));
+    }
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA))
+    return createDeviceId(QLatin1String("builtin"), QAudio::AudioInput, QAudioDeviceInfoPrivate::defaultInputDevice());
+#endif
+    return QAudioDeviceId();
+}
+
+QAudioDeviceId QAudioDeviceFactory::defaultOutputDevice()
+{
+    QAudioEngineFactoryInterface* plugin = qobject_cast<QAudioEngineFactoryInterface*>(loader()->instance(QLatin1String("default")));
+
+    if (plugin) {
+        QList<QByteArray> list = plugin->deviceList(QAudio::AudioOutput);
+        if (list.size() > 0)
+            return createDeviceId(QLatin1String("default"), QAudio::AudioOutput, list.at(0));
+    }
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA))
+    return createDeviceId(QLatin1String("builtin"), QAudio::AudioOutput, QAudioDeviceInfoPrivate::defaultOutputDevice());
+#endif
+    return QAudioDeviceId();
+}
+
+QAbstractAudioDeviceInfo* QAudioDeviceFactory::audioDeviceInfo(QAudioDeviceId const& id)
+{
+    if (id.isNull())
+        return new QNullDeviceInfo();
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA))
+    if (id.d->key == QLatin1String("builtin"))
+        return new QAudioDeviceInfoPrivate(id.d->handle, QAudio::Mode(id.d->mode));
+#endif
+    QAudioEngineFactoryInterface* plugin = qobject_cast<QAudioEngineFactoryInterface*>(loader()->instance(id.d->key));
+
+    if (plugin)
+        return plugin->createDeviceInfo(id.d->handle, QAudio::Mode(id.d->mode));
+
+    return new QNullDeviceInfo();
+}
+
+QAbstractAudioInput* QAudioDeviceFactory::createDefaultInputDevice(QAudioFormat const &format)
+{
+    return createInputDevice(defaultInputDevice(), format);
+}
+
+QAbstractAudioOutput* QAudioDeviceFactory::createDefaultOutputDevice(QAudioFormat const &format)
+{
+    return createOutputDevice(defaultOutputDevice(), format);
+}
+
+QAbstractAudioInput* QAudioDeviceFactory::createInputDevice(QAudioDeviceId const& id, QAudioFormat const &format)
+{
+    if (id.isNull())
+        return new QNullInputDevice();
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA))
+    if (id.d->key == QLatin1String("builtin")) {
+        if(!defaultInputDevice().isNull())
+            return new QAudioInputPrivate(id.d->handle, format);
+        else
+            return new QNullInputDevice();
+    }
+#endif
+    QAudioEngineFactoryInterface* plugin = qobject_cast<QAudioEngineFactoryInterface*>(loader()->instance((id.d->key)));
+
+    if (plugin)
+        return plugin->createInput(id.d->handle, format);
+
+    return new QNullInputDevice();
+}
+
+QAbstractAudioOutput* QAudioDeviceFactory::createOutputDevice(QAudioDeviceId const& id, QAudioFormat const &format)
+{
+    if (id.isNull())
+        return new QNullOutputDevice();
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA))
+    if (id.d->key == QLatin1String("builtin")) {
+        if(!defaultOutputDevice().isNull())
+            return new QAudioOutputPrivate(id.d->handle, format);
+        else
+            return new QNullOutputDevice();
+    }
+#endif
+    QAudioEngineFactoryInterface* plugin = qobject_cast<QAudioEngineFactoryInterface*>(loader()->instance(id.d->key));
+
+    if (plugin)
+        return plugin->createOutput(id.d->handle, format);
+
+    return new QNullOutputDevice();
+}
+
+QAudioDeviceId QAudioDeviceFactory::createDeviceId(QString const& key, int mode, QByteArray const& handle)
+{
+    return QAudioDeviceId(new QAudioDeviceIdPrivate(key, mode, handle));
+}
+
+QT_END_NAMESPACE
+
diff --git a/src/multimedia/audio/qaudiodevicefactory_p.h b/src/multimedia/audio/qaudiodevicefactory_p.h
new file mode 100644
index 0000000..a8e2b28
--- /dev/null
+++ b/src/multimedia/audio/qaudiodevicefactory_p.h
@@ -0,0 +1,100 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifndef QAUDIODEVICEFACTORY_P_H
+#define QAUDIODEVICEFACTORY_P_H
+
+#include <QtCore/qglobal.h>
+#include <QtCore/qbytearray.h>
+#include <QtCore/qlist.h>
+
+#include <QtMultimedia/qaudiodeviceid.h>
+#include <QtMultimedia/qaudiodeviceinfo.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Multimedia)
+
+class QAbstractAudioInput;
+class QAbstractAudioOutput;
+
+
+class QAudioDeviceFactory
+{
+public:
+    static QList<QAudioDeviceId> deviceList(QAudio::Mode mode);
+
+    static QAudioDeviceId defaultInputDevice();
+    static QAudioDeviceId defaultOutputDevice();
+
+    static QAbstractAudioDeviceInfo* audioDeviceInfo(QAudioDeviceId const &device);
+
+    static QAbstractAudioInput* createDefaultInputDevice(QAudioFormat const &format);
+    static QAbstractAudioOutput* createDefaultOutputDevice(QAudioFormat const &format);
+
+    static QAbstractAudioInput* createInputDevice(QAudioDeviceId const &device, QAudioFormat const &format);
+    static QAbstractAudioOutput* createOutputDevice(QAudioDeviceId const &device, QAudioFormat const &format);
+
+    static QAbstractAudioInput* createNullInput();
+    static QAbstractAudioOutput* createNullOutput();
+
+    static QAudioDeviceId createDeviceId(QString const& key, int mode, QByteArray const& handle);
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QAUDIODEVICEFACTORY_P_H
+
diff --git a/src/multimedia/audio/qaudiodeviceid.cpp b/src/multimedia/audio/qaudiodeviceid.cpp
new file mode 100644
index 0000000..21a9cd8
--- /dev/null
+++ b/src/multimedia/audio/qaudiodeviceid.cpp
@@ -0,0 +1,168 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/qstring.h>
+#include <QtCore/qbytearray.h>
+#include <QtCore/qdatastream.h>
+
+#include <QtMultimedia/qaudiodeviceid.h>
+#include "qaudiodeviceid_p.h"
+
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QAudioDeviceId
+    \brief The QAudioDeviceId class provides means for identifying a unique input or output device on a system.
+
+    \inmodule QtMultimedia
+    \ingroup multimedia
+    \since 4.6
+
+    \sa QAudioDeviceInfo, QAudioOutput, QAudioInput
+*/
+
+/*!
+    Construct a new null QAudioDeviceId.
+*/
+
+QAudioDeviceId::QAudioDeviceId()
+{
+}
+
+/*!
+    Copy the QAudDeviceId referenced by \a other.
+*/
+
+QAudioDeviceId::QAudioDeviceId(const QAudioDeviceId &other):
+    d(other.d)
+{
+}
+
+/*!
+    Destroy the QAudioDeviceId.
+*/
+
+QAudioDeviceId::~QAudioDeviceId()
+{
+}
+
+/*!
+    Make a copy of the \a other QAudioDeviceId.
+*/
+
+QAudioDeviceId& QAudioDeviceId::operator=(const QAudioDeviceId &other)
+{
+    d = other.d;
+    return *this;
+}
+
+/*!
+    Compare with the \a other QAudioDeviceId, return true if they are the same;
+    otherwise false.
+*/
+
+bool QAudioDeviceId::operator==(const QAudioDeviceId &other) const
+{
+    return (d.constData() == 0 && other.d.constData() == 0) ||
+            (d.constData() != 0 && other.d.constData() != 0 &&
+             d->key == other.d->key && d->mode == other.d->mode && d->handle == other.d->handle);
+}
+
+/*!
+    Compare with the \a other QAudioDeviceId, return false if they are the same;
+    otherwise true.
+*/
+
+bool QAudioDeviceId::operator!=(const QAudioDeviceId &other) const
+{
+    return !(*this == other);
+}
+
+/*!
+    Returns true if this is not a valid QAudioDeviceId; otherwise false.
+*/
+
+bool QAudioDeviceId::isNull() const
+{
+    return d.constData() == 0;
+}
+
+/*!
+    \internal
+*/
+
+QAudioDeviceId::QAudioDeviceId(QAudioDeviceIdPrivate* data):
+    d(data)
+{
+}
+
+/*!
+    \internal
+*/
+
+QAudioDeviceIdPrivate::QAudioDeviceIdPrivate(QString const& k, int m, QByteArray const& h):
+    key(k), mode(m), handle(h)
+{
+}
+
+#ifndef QT_NO_DATASTREAM
+Q_MULTIMEDIA_EXPORT QDataStream &operator<<(QDataStream &s, const QAudioDeviceId &id)
+{
+    s << id.d->key << id.d->mode << id.d->handle;
+    return s;
+}
+
+Q_MULTIMEDIA_EXPORT QDataStream &operator>>(QDataStream &s, QAudioDeviceId &id)
+{
+    QString key;
+    int mode;
+    QByteArray  handle;
+
+    s >> key >> mode >> handle;
+    id = QAudioDeviceId(new QAudioDeviceIdPrivate(key, mode, handle));
+
+    return s;
+}
+#endif
+
+
+QT_END_NAMESPACE
diff --git a/src/multimedia/audio/qaudiodeviceid.h b/src/multimedia/audio/qaudiodeviceid.h
new file mode 100644
index 0000000..f9188d3
--- /dev/null
+++ b/src/multimedia/audio/qaudiodeviceid.h
@@ -0,0 +1,94 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QAUDIODEVICEID_H
+#define QAUDIODEVICEID_H
+
+#include <QtCore/qshareddata.h>
+#include <QtCore/qmetatype.h>
+
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Multimedia)
+
+
+class QAudioDeviceFactory;
+class QAudioDeviceIdPrivate;
+
+class Q_MULTIMEDIA_EXPORT QAudioDeviceId
+{
+    friend class QAudioDeviceFactory;
+    friend Q_MULTIMEDIA_EXPORT QDataStream &operator<<(QDataStream&, const QAudioDeviceId&);
+    friend Q_MULTIMEDIA_EXPORT QDataStream &operator>>(QDataStream&, QAudioDeviceId&);
+
+public:
+    QAudioDeviceId();
+    QAudioDeviceId(const QAudioDeviceId &other);
+    ~QAudioDeviceId();
+
+    QAudioDeviceId& operator=(const QAudioDeviceId &other);
+    bool operator==(const QAudioDeviceId &id) const;
+    bool operator!=(const QAudioDeviceId &id) const;
+
+    bool isNull() const;
+
+private:
+    QAudioDeviceId(QAudioDeviceIdPrivate *data);
+
+    QSharedDataPointer<QAudioDeviceIdPrivate> d;
+};
+
+#ifndef QT_NO_DATASTREAM
+Q_MULTIMEDIA_EXPORT QDataStream &operator<<(QDataStream&, const QAudioDeviceId&);
+Q_MULTIMEDIA_EXPORT QDataStream &operator>>(QDataStream&, QAudioDeviceId&);
+#endif
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+Q_DECLARE_METATYPE(QAudioDeviceId);
+
+
+#endif  // QAUDIODEVICEID_H
diff --git a/src/multimedia/audio/qaudiodeviceid_p.h b/src/multimedia/audio/qaudiodeviceid_p.h
new file mode 100644
index 0000000..3034574
--- /dev/null
+++ b/src/multimedia/audio/qaudiodeviceid_p.h
@@ -0,0 +1,82 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifndef QAUDIODEVICEIDPRIVATE_H
+#define QAUDIODEVICEIDPRIVATE_H
+
+#include <QtCore/qstring.h>
+#include <QtCore/qbytearray.h>
+#include <QtCore/qshareddata.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Multimedia)
+
+
+class QAudioDeviceIdPrivate : public QSharedData
+{
+public:
+    QAudioDeviceIdPrivate(QString const& k, int m, QByteArray const& h);
+
+    QString     key;
+    int         mode;
+    QByteArray  handle;
+};
+
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif  // QAUDIODEVICEIDPRIVATE_H
diff --git a/src/multimedia/audio/qaudiodeviceinfo.cpp b/src/multimedia/audio/qaudiodeviceinfo.cpp
new file mode 100644
index 0000000..c1895d7
--- /dev/null
+++ b/src/multimedia/audio/qaudiodeviceinfo.cpp
@@ -0,0 +1,270 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qaudiodevicefactory_p.h"
+#include <QtMultimedia/qaudioengine.h>
+#include <QtMultimedia/qaudiodeviceinfo.h>
+
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QAudioDeviceInfo
+    \brief The QAudioDeviceInfo class provides an interface to query audio devices and their functionality.
+
+    \inmodule QtMultimedia
+    \ingroup multimedia
+    \since 4.6
+
+    QAudioDeviceInfo lets you query for audio devices--such as sound
+    cards and USB headsets--that are currently available on the system.
+    The audio devices available are dependent on the platform or audio plugins installed.
+
+    You can also query each device for the formats it supports. A
+    format in this context is a set consisting of a specific byte
+    order, channel, codec, frequency, sample rate, and sample type.  A
+    format is represented by the QAudioFormat class.
+
+    The values supported by the the device for each of these
+    parameters can be fetched with
+    supportedByteOrders(), supportedChannels(), supportedCodecs(),
+    supportedFrequencies(), supportedSampleSizes(), and
+    supportedSampleTypes(). The combinations supported are dependent on the platform,
+    audio plugins installed and the audio device capabilities. If you need a specific format, you can check if
+    the device supports it with isFormatSupported(), or fetch a
+    supported format that is as close as possible to the format with
+    nearestFormat().
+
+    A QAudioDeviceInfo is constructed with a QAudioDeviceId, which is
+    an identifier for a physical device. It is used by Qt to construct
+    classes that communicate with the device--such as
+    QAudioDeviceInfo, QAudioInput, and QAudioOutput. The static
+    functions defaultInputDevice(), defaultOutputDevice(), and
+    deviceList() let you get a hold of the ids for all available
+    devices. You fetch ids based on whether you will use the device
+    for input or output; this is specified by the QAudio::Mode enum.
+    The QAudioDeviceId returned are only valid for the QAudio::Mode.
+
+    For instance:
+
+    \code
+    foreach(QAudioDeviceId audioId, QAudioDeviceInfo::deviceList(QAudio::AudioOutput)) {
+        QAudioDeviceInfo info(audioId);
+        qDebug() << "Device name: " << info.deviceName();
+    }
+    \endcode
+
+    In this code sample, we loop through all devices that are able to output
+    sound, i.e., play an audio stream in a supported format. For each device we
+    find, we simply print the deviceName().
+
+    \sa QAudioOutput, QAudioInput, QAudioDeviceId
+*/
+
+/*!
+    Construct a new audio device info and attach it to \a parent.
+    Using the audio device with the specified \a id.
+*/
+
+QAudioDeviceInfo::QAudioDeviceInfo(const QAudioDeviceId &id, QObject *parent):
+    QObject(parent)
+{
+    d = QAudioDeviceFactory::audioDeviceInfo(id);
+}
+
+/*!
+    Destroy this audio device info.
+*/
+
+QAudioDeviceInfo::~QAudioDeviceInfo()
+{
+    delete d;
+}
+
+/*!
+    Returns human readable name of audio device.
+
+    Device names vary depending on platform/audio plugin being used.
+
+    They are a unique string identifiers for the audio device.
+
+    eg. default, Intel, U0x46d0x9a4
+*/
+
+QString QAudioDeviceInfo::deviceName() const
+{
+    return d->deviceName();
+}
+
+/*!
+    Returns true if \a settings are supported by the audio device of this QAudioDeviceInfo.
+*/
+
+bool QAudioDeviceInfo::isFormatSupported(const QAudioFormat &settings) const
+{
+    return d->isFormatSupported(settings);
+}
+
+/*!
+    Returns QAudioFormat of default settings.
+
+    These settings are provided by the platform/audio plugin being used.
+
+    They also are dependent on the QAudio::Mode being used.
+
+    A typical audio system would provide something like:
+    \list
+    \o Input settings: 8000Hz mono 8 bit.
+    \o Output settings: 44100Hz stereo 16 bit little endian.
+    \endlist
+*/
+
+QAudioFormat QAudioDeviceInfo::preferredFormat() const
+{
+    return d->preferredFormat();
+}
+
+/*!
+    Returns closest QAudioFormat to \a settings that system audio supports.
+
+    These settings are provided by the platform/audio plugin being used.
+
+    They also are dependent on the QAudio::Mode being used.
+*/
+
+QAudioFormat QAudioDeviceInfo::nearestFormat(const QAudioFormat &settings) const
+{
+    return d->nearestFormat(settings);
+}
+
+/*!
+    Returns a list of supported codecs.
+
+    All platform and plugin implementations should provide support for:
+
+    "audio/pcm" - Linear PCM
+
+    For writing plugins to support additional codecs refer to:
+
+    http://www.iana.org/assignments/media-types/audio/
+*/
+
+QStringList QAudioDeviceInfo::supportedCodecs() const
+{
+    return d->codecList();
+}
+
+/*!
+    Returns a list of supported frequencies.
+*/
+
+QList<int> QAudioDeviceInfo::supportedFrequencies() const
+{
+    return d->frequencyList();
+}
+
+/*!
+    Returns a list of supported channels.
+*/
+
+QList<int> QAudioDeviceInfo::supportedChannels() const
+{
+    return d->channelsList();
+}
+
+/*!
+    Returns a list of supported sample sizes.
+*/
+
+QList<int> QAudioDeviceInfo::supportedSampleSizes() const
+{
+    return d->sampleSizeList();
+}
+
+/*!
+    Returns a list of supported byte orders.
+*/
+
+QList<QAudioFormat::Endian> QAudioDeviceInfo::supportedByteOrders() const
+{
+    return d->byteOrderList();
+}
+
+/*!
+    Returns a list of supported sample types.
+*/
+
+QList<QAudioFormat::SampleType> QAudioDeviceInfo::supportedSampleTypes() const
+{
+    return d->sampleTypeList();
+}
+
+/*!
+    Returns the name of the default input audio device.
+    All platform and audio plugin implementations provide a default audio device to use.
+*/
+
+QAudioDeviceId QAudioDeviceInfo::defaultInputDevice()
+{
+    return QAudioDeviceFactory::defaultInputDevice();
+}
+
+/*!
+    Returns the name of the default output audio device.
+    All platform and audio plugin implementations provide a default audio device to use.
+*/
+
+QAudioDeviceId QAudioDeviceInfo::defaultOutputDevice()
+{
+    return QAudioDeviceFactory::defaultOutputDevice();
+}
+
+/*!
+    Returns a list of audio devices that support \a mode.
+*/
+
+QList<QAudioDeviceId> QAudioDeviceInfo::deviceList(QAudio::Mode mode)
+{
+    return QAudioDeviceFactory::deviceList(mode);
+}
+
+QT_END_NAMESPACE
+
diff --git a/src/multimedia/audio/qaudiodeviceinfo.h b/src/multimedia/audio/qaudiodeviceinfo.h
new file mode 100644
index 0000000..444a00a
--- /dev/null
+++ b/src/multimedia/audio/qaudiodeviceinfo.h
@@ -0,0 +1,102 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#ifndef QAUDIODEVICEINFO_H
+#define QAUDIODEVICEINFO_H
+
+#include <QtCore/qobject.h>
+#include <QtCore/qglobal.h>
+#include <QtCore/qbytearray.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qstringlist.h>
+#include <QtCore/qlist.h>
+
+#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qaudioformat.h>
+#include <QtMultimedia/qaudiodeviceid.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Multimedia)
+
+
+class QAbstractAudioDeviceInfo;
+
+class Q_MULTIMEDIA_EXPORT QAudioDeviceInfo : public QObject
+{
+    Q_OBJECT
+
+public:
+    explicit QAudioDeviceInfo(const QAudioDeviceId &id, QObject *parent = 0);
+    ~QAudioDeviceInfo();
+
+    QString deviceName() const;
+
+    bool isFormatSupported(const QAudioFormat &format) const;
+    QAudioFormat preferredFormat() const;
+    QAudioFormat nearestFormat(const QAudioFormat &format) const;
+
+    QStringList supportedCodecs() const;
+    QList<int> supportedFrequencies() const;
+    QList<int> supportedChannels() const;
+    QList<int> supportedSampleSizes() const;
+    QList<QAudioFormat::Endian> supportedByteOrders() const;
+    QList<QAudioFormat::SampleType> supportedSampleTypes() const;
+
+    static QAudioDeviceId defaultInputDevice();
+    static QAudioDeviceId defaultOutputDevice();
+
+    static QList<QAudioDeviceId> deviceList(QAudio::Mode mode);
+
+private:
+    Q_DISABLE_COPY(QAudioDeviceInfo)
+
+    QAbstractAudioDeviceInfo* d;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QAUDIODEVICEINFO_H
diff --git a/src/multimedia/audio/qaudiodeviceinfo_alsa_p.cpp b/src/multimedia/audio/qaudiodeviceinfo_alsa_p.cpp
new file mode 100644
index 0000000..fe45f82
--- /dev/null
+++ b/src/multimedia/audio/qaudiodeviceinfo_alsa_p.cpp
@@ -0,0 +1,394 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qaudiodeviceinfo_alsa_p.h"
+
+QAudioDeviceInfoPrivate::QAudioDeviceInfoPrivate(QByteArray dev, QAudio::Mode mode)
+{
+    handle = 0;
+
+    device = QLatin1String(dev);
+    this->mode = mode;
+}
+
+QAudioDeviceInfoPrivate::~QAudioDeviceInfoPrivate()
+{
+    close();
+}
+
+bool QAudioDeviceInfoPrivate::isFormatSupported(const QAudioFormat& format) const
+{
+    return testSettings(format);
+}
+
+QAudioFormat QAudioDeviceInfoPrivate::preferredFormat() const
+{
+    QAudioFormat nearest;
+    if(mode == QAudio::AudioOutput) {
+        nearest.setFrequency(44100);
+        nearest.setChannels(2);
+        nearest.setByteOrder(QAudioFormat::LittleEndian);
+        nearest.setSampleType(QAudioFormat::SignedInt);
+        nearest.setSampleSize(16);
+        nearest.setCodec(tr("audio/pcm"));
+    } else {
+        nearest.setFrequency(8000);
+        nearest.setChannels(1);
+        nearest.setSampleType(QAudioFormat::SignedInt);
+        nearest.setSampleSize(8);
+        nearest.setCodec(tr("audio/pcm"));
+    }
+    return nearest;
+}
+
+QAudioFormat QAudioDeviceInfoPrivate::nearestFormat(const QAudioFormat& format) const
+{
+    if(testSettings(format))
+        return format;
+    else
+        return preferredFormat();
+}
+
+QString QAudioDeviceInfoPrivate::deviceName() const
+{
+    return device;
+}
+
+QStringList QAudioDeviceInfoPrivate::codecList()
+{
+    updateLists();
+    return codecz;
+}
+
+QList<int> QAudioDeviceInfoPrivate::frequencyList()
+{
+    updateLists();
+    return freqz;
+}
+
+QList<int> QAudioDeviceInfoPrivate::channelsList()
+{
+    updateLists();
+    return channelz;
+}
+
+QList<int> QAudioDeviceInfoPrivate::sampleSizeList()
+{
+    updateLists();
+    return sizez;
+}
+
+QList<QAudioFormat::Endian> QAudioDeviceInfoPrivate::byteOrderList()
+{
+    updateLists();
+    return byteOrderz;
+}
+
+QList<QAudioFormat::SampleType> QAudioDeviceInfoPrivate::sampleTypeList()
+{
+    updateLists();
+    return typez;
+}
+
+bool QAudioDeviceInfoPrivate::open()
+{
+    int err = 0;
+    QString dev = device;
+    if(!dev.contains(tr("default"))) {
+        int idx = snd_card_get_index(dev.toLocal8Bit().constData());
+        dev = QString(tr("hw:%1,0")).arg(idx);
+    }
+    if(mode == QAudio::AudioOutput) {
+        err=snd_pcm_open( &handle,dev.toLocal8Bit().constData(),SND_PCM_STREAM_PLAYBACK,0);
+    } else {
+        err=snd_pcm_open( &handle,dev.toLocal8Bit().constData(),SND_PCM_STREAM_CAPTURE,0);
+    }
+    if(err < 0) {
+        handle = 0;
+        return false;
+    }
+    return true;
+}
+
+void QAudioDeviceInfoPrivate::close()
+{
+    if(handle)
+        snd_pcm_close(handle);
+    handle = 0;
+}
+
+bool QAudioDeviceInfoPrivate::testSettings(const QAudioFormat& format) const
+{
+    // Set nearest to closest settings that do work.
+    // See if what is in settings will work (return value).
+
+    int err = 0;
+    snd_pcm_t* handle;
+    snd_pcm_hw_params_t *params;
+    QString dev = device;
+
+    // open()
+    if(!dev.contains(tr("default"))) {
+        int idx = snd_card_get_index(dev.toLocal8Bit().constData());
+        dev = QString(tr("hw:%1,0")).arg(idx);
+    }
+    if(mode == QAudio::AudioOutput) {
+        err=snd_pcm_open( &handle,dev.toLocal8Bit().constData(),SND_PCM_STREAM_PLAYBACK,0);
+    } else {
+        err=snd_pcm_open( &handle,dev.toLocal8Bit().constData(),SND_PCM_STREAM_CAPTURE,0);
+    }
+    if(err < 0) {
+        handle = 0;
+        return false;
+    }
+
+    bool testChannel = false;
+    bool testCodec = false;
+    bool testFreq = false;
+    bool testType = false;
+    bool testSize = false;
+
+    int  dir = 0;
+
+    snd_pcm_nonblock( handle, 0 );
+    snd_pcm_hw_params_alloca( &params );
+    snd_pcm_hw_params_any( handle, params );
+
+    // For now, just accept only audio/pcm codec
+    if(!format.codec().startsWith(tr("audio/pcm"))) {
+        err=-1;
+    } else
+        testCodec = true;
+
+    if(err>=0 && format.channels() != -1) {
+        err = snd_pcm_hw_params_test_channels(handle,params,format.channels());
+        if(err>=0)
+            err = snd_pcm_hw_params_set_channels(handle,params,format.channels());
+        if(err>=0)
+            testChannel = true;
+    }
+
+    if(err>=0 && format.frequency() != -1) {
+        err = snd_pcm_hw_params_test_rate(handle,params,format.frequency(),0);
+        if(err>=0)
+            err = snd_pcm_hw_params_set_rate(handle,params,format.frequency(),dir);
+        if(err>=0)
+            testFreq = true;
+    }
+
+    if((err>=0 && format.sampleSize() != -1) &&
+            (format.sampleType() != QAudioFormat::Unknown)) {
+        switch(format.sampleSize()) {
+            case 8:
+                if(format.sampleType() == QAudioFormat::SignedInt)
+                    err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S8);
+                else if(format.sampleType() == QAudioFormat::UnSignedInt)
+                    err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U8);
+                break;
+            case 16:
+                if(format.sampleType() == QAudioFormat::SignedInt) {
+                    if(format.byteOrder() == QAudioFormat::LittleEndian)
+                        err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S16_LE);
+                    else if(format.byteOrder() == QAudioFormat::BigEndian)
+                        err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S16_BE);
+                } else if(format.sampleType() == QAudioFormat::UnSignedInt) {
+                    if(format.byteOrder() == QAudioFormat::LittleEndian)
+                        err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U16_LE);
+                    else if(format.byteOrder() == QAudioFormat::BigEndian)
+                        err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U16_BE);
+                }
+                break;
+            case 32:
+                if(format.sampleType() == QAudioFormat::SignedInt) {
+                    if(format.byteOrder() == QAudioFormat::LittleEndian)
+                        err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S32_LE);
+                    else if(format.byteOrder() == QAudioFormat::BigEndian)
+                        err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_S32_BE);
+                } else if(format.sampleType() == QAudioFormat::UnSignedInt) {
+                    if(format.byteOrder() == QAudioFormat::LittleEndian)
+                        err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U32_LE);
+                    else if(format.byteOrder() == QAudioFormat::BigEndian)
+                        err = snd_pcm_hw_params_set_format(handle,params,SND_PCM_FORMAT_U32_BE);
+                }
+        }
+        if(err>=0) {
+            testSize = true;
+            testType = true;
+        }
+    }
+    if(err>=0)
+        err = snd_pcm_hw_params(handle, params);
+
+    if(err == 0) {
+        // settings work
+        // close()
+        if(handle)
+            snd_pcm_close(handle);
+        return true;
+    }
+    if(handle)
+        snd_pcm_close(handle);
+
+    return false;
+}
+
+void QAudioDeviceInfoPrivate::updateLists()
+{
+    // redo all lists based on current settings
+    freqz.clear();
+    channelz.clear();
+    sizez.clear();
+    byteOrderz.clear();
+    typez.clear();
+    codecz.clear();
+
+    if(!handle)
+        open();
+
+    if(!handle)
+        return;
+
+    for(int i=0; i<(int)MAX_SAMPLE_RATES; i++) {
+        //if(snd_pcm_hw_params_test_rate(handle, params, SAMPLE_RATES[i], dir) == 0)
+        freqz.append(SAMPLE_RATES[i]);
+    }
+    channelz.append(1);
+    channelz.append(2);
+    sizez.append(8);
+    sizez.append(16);
+    sizez.append(32);
+    byteOrderz.append(QAudioFormat::LittleEndian);
+    byteOrderz.append(QAudioFormat::BigEndian);
+    typez.append(QAudioFormat::SignedInt);
+    typez.append(QAudioFormat::UnSignedInt);
+    typez.append(QAudioFormat::Float);
+    codecz.append(tr("audio/pcm"));
+    close();
+}
+
+QList<QByteArray> QAudioDeviceInfoPrivate::deviceList(QAudio::Mode mode)
+{
+    QAudio::Mode _m;
+    QList<QByteArray> devices;
+    QByteArray filter;
+    QString dir;
+
+    // Create a list of all current audio devices that support mode
+    void **hints, **n;
+    char *name, *descr, *io;
+
+    if(snd_device_name_hint(-1, "pcm", &hints) < 0) {
+        qWarning()<<"no alsa devices available";
+        return devices;
+    }
+    n = hints;
+
+    while (*n != NULL) {
+        _m = QAudio::AudioOutput;
+        name = snd_device_name_get_hint(*n, "NAME");
+        descr = snd_device_name_get_hint(*n, "DESC");
+        io = snd_device_name_get_hint(*n, "IOID");
+        dir = QString::fromUtf8(io);
+        if((name != NULL) && (descr != NULL) && ((io == NULL) || (dir.length() ==filter.length()))) {
+            if(dir.length() == 5)
+                _m = QAudio::AudioInput;
+            if(io == NULL)
+                _m = mode;
+
+            QString str = tr(name);
+
+            if(str.contains(tr("default"))) {
+                int pos = str.indexOf(tr("="),0);
+                devices.append(str.mid(pos+1).toLocal8Bit().constData());
+            }
+        }
+        if(name != NULL)
+            free(name);
+        if(descr != NULL)
+            free(descr);
+        if(io != NULL)
+            free(io);
+        n++;
+    }
+    snd_device_name_free_hint(hints);
+
+    if(devices.size() > 0) {
+        devices.append("default");
+        if(mode == QAudio::AudioInput) {
+            filter.append("Input");
+        } else {
+            filter.append("Output");
+        }
+    }
+
+    return devices;
+}
+
+QByteArray QAudioDeviceInfoPrivate::defaultInputDevice()
+{
+    QList<QByteArray> devices = deviceList(QAudio::AudioInput);
+    if(devices.size() == 0)
+        return QByteArray();
+
+    return QByteArray("default");
+}
+
+QByteArray QAudioDeviceInfoPrivate::defaultOutputDevice()
+{
+    QList<QByteArray> devices = deviceList(QAudio::AudioOutput);
+    if(devices.size() == 0)
+        return QByteArray();
+
+    return QByteArray("default");
+}
+
+
diff --git a/src/multimedia/audio/qaudiodeviceinfo_alsa_p.h b/src/multimedia/audio/qaudiodeviceinfo_alsa_p.h
new file mode 100644
index 0000000..3ac9239
--- /dev/null
+++ b/src/multimedia/audio/qaudiodeviceinfo_alsa_p.h
@@ -0,0 +1,113 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+
+#ifndef QAUDIODEVICEINFOALSA_H
+#define QAUDIODEVICEINFOALSA_H
+
+#include <alsa/asoundlib.h>
+
+#include <QtCore/qbytearray.h>
+#include <QtCore/qstringlist.h>
+#include <QtCore/qlist.h>
+#include <QtCore/qdebug.h>
+
+#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qaudiodeviceinfo.h>
+#include <QtMultimedia/qaudioengine.h>
+
+const unsigned int MAX_SAMPLE_RATES = 5;
+const unsigned int SAMPLE_RATES[] =
+    { 8000, 11025, 22050, 44100, 48000 };
+
+class QAudioDeviceInfoPrivate : public QAbstractAudioDeviceInfo
+{
+    Q_OBJECT
+public:
+    QAudioDeviceInfoPrivate(QByteArray dev,QAudio::Mode mode);
+    ~QAudioDeviceInfoPrivate();
+
+    bool testSettings(const QAudioFormat& format) const;
+    void updateLists();
+    QAudioFormat preferredFormat() const;
+    bool isFormatSupported(const QAudioFormat& format) const;
+    QAudioFormat nearestFormat(const QAudioFormat& format) const;
+    QString deviceName() const;
+    QStringList codecList();
+    QList<int> frequencyList();
+    QList<int> channelsList();
+    QList<int> sampleSizeList();
+    QList<QAudioFormat::Endian> byteOrderList();
+    QList<QAudioFormat::SampleType> sampleTypeList();
+    static QByteArray defaultInputDevice();
+    static QByteArray defaultOutputDevice();
+    static QList<QByteArray> deviceList(QAudio::Mode);
+
+private:
+    bool open();
+    void close();
+
+    QString device;
+    QAudio::Mode mode;
+    QAudioFormat nearest;
+    QList<int> freqz;
+    QList<int> channelz;
+    QList<int> sizez;
+    QList<QAudioFormat::Endian> byteOrderz;
+    QStringList codecz;
+    QList<QAudioFormat::SampleType> typez;
+    snd_pcm_t* handle;
+    snd_pcm_hw_params_t *params;
+};
+
+#endif
+
diff --git a/src/multimedia/audio/qaudiodeviceinfo_mac_p.cpp b/src/multimedia/audio/qaudiodeviceinfo_mac_p.cpp
new file mode 100644
index 0000000..c94e0c4
--- /dev/null
+++ b/src/multimedia/audio/qaudiodeviceinfo_mac_p.cpp
@@ -0,0 +1,357 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qstringlist.h>
+#include <QtCore/qlist.h>
+#include <QtCore/qbytearray.h>
+#include <QtCore/qdatastream.h>
+#include <QtCore/qdebug.h>
+#include <private/qcore_mac_p.h>
+
+#include <QtMultimedia/qaudiodeviceinfo.h>
+#include "qaudio_mac_p.h"
+#include "qaudiodeviceinfo_mac_p.h"
+
+
+
+QT_BEGIN_NAMESPACE
+
+
+QAudioDeviceInfoPrivate::QAudioDeviceInfoPrivate(QByteArray const& handle, QAudio::Mode)
+{
+    QDataStream ds(handle);
+    quint32 did, tm;
+
+    ds >> did >> tm >> name;
+    deviceId = AudioDeviceID(did);
+    mode = QAudio::Mode(tm);
+}
+
+bool QAudioDeviceInfoPrivate::isFormatSupported(const QAudioFormat& format) const
+{
+    return format.codec() == QString::fromLatin1("audio/pcm");
+}
+
+QAudioFormat QAudioDeviceInfoPrivate::preferredFormat() const
+{
+    QAudioFormat    rc;
+
+    UInt32  propSize = 0;
+
+    if (AudioDeviceGetPropertyInfo(deviceId,
+                                    0,
+                                    mode == QAudio::AudioInput,
+                                    kAudioDevicePropertyStreams,
+                                    &propSize,
+                                    0) == noErr) {
+
+        const int sc = propSize / sizeof(AudioStreamID);
+
+        if (sc > 0) {
+            AudioStreamID*  streams = new AudioStreamID[sc];
+
+            if (AudioDeviceGetProperty(deviceId,
+                                        0,
+                                        mode == QAudio::AudioInput,
+                                        kAudioDevicePropertyStreams,
+                                        &propSize,
+                                        streams) == noErr) {
+
+                for (int i = 0; i < sc; ++i) {
+                    if (AudioStreamGetPropertyInfo(streams[i],
+                                                    0,
+                                                    kAudioStreamPropertyPhysicalFormat,
+                                                    &propSize,
+                                                    0) == noErr) {
+
+                        AudioStreamBasicDescription sf;
+
+                        if (AudioStreamGetProperty(streams[i],
+                                                    0,
+                                                    kAudioStreamPropertyPhysicalFormat,
+                                                    &propSize,
+                                                    &sf) == noErr) {
+                            rc = toQAudioFormat(sf);
+                            break;
+                        }
+                    }
+                }
+            }
+
+            delete streams;
+        }
+    }
+
+    return rc;
+}
+
+QAudioFormat QAudioDeviceInfoPrivate::nearestFormat(const QAudioFormat& format) const
+{
+    QAudioFormat    rc(format);
+    QAudioFormat    target = preferredFormat();
+
+    if (!format.codec().isEmpty() && format.codec() != QString::fromLatin1("audio/pcm"))
+        return QAudioFormat();
+
+    rc.setCodec(QString::fromLatin1("audio/pcm"));
+
+    if (rc.frequency() != target.frequency())
+        rc.setFrequency(target.frequency());
+    if (rc.channels() != target.channels())
+        rc.setChannels(target.channels());
+    if (rc.sampleSize() != target.sampleSize())
+        rc.setSampleSize(target.sampleSize());
+    if (rc.byteOrder() != target.byteOrder())
+        rc.setByteOrder(target.byteOrder());
+    if (rc.sampleType() != target.sampleType())
+        rc.setSampleType(target.sampleType());
+
+    return rc;
+}
+
+QString QAudioDeviceInfoPrivate::deviceName() const
+{
+    return name;
+}
+
+QStringList QAudioDeviceInfoPrivate::codecList()
+{
+    return QStringList() << QString::fromLatin1("audio/pcm");
+}
+
+QList<int> QAudioDeviceInfoPrivate::frequencyList()
+{
+    QSet<int>  rc;
+
+    // Add some common frequencies
+    rc << 8000 << 11025 << 22050 << 44100;
+
+    //
+    UInt32  propSize = 0;
+
+    if (AudioDeviceGetPropertyInfo(deviceId,
+                                    0,
+                                    mode == QAudio::AudioInput,
+                                    kAudioDevicePropertyAvailableNominalSampleRates,
+                                    &propSize,
+                                    0) == noErr) {
+
+        const int pc = propSize / sizeof(AudioValueRange);
+
+        if (pc > 0) {
+            AudioValueRange*    vr = new AudioValueRange[pc];
+
+            if (AudioDeviceGetProperty(deviceId,
+                                        0,
+                                        mode == QAudio::AudioInput,
+                                        kAudioDevicePropertyAvailableNominalSampleRates,
+                                        &propSize,
+                                        vr) == noErr) {
+
+                for (int i = 0; i < pc; ++i)
+                    rc << vr[i].mMaximum;
+            }
+
+            delete vr;
+        }
+    }
+
+    return rc.toList();
+}
+
+QList<int> QAudioDeviceInfoPrivate::channelsList()
+{
+    QList<int>  rc;
+
+    // Can mix down to 1 channel
+    rc << 1;
+
+    UInt32  propSize = 0;
+    int     channels = 0;
+
+    if (AudioDeviceGetPropertyInfo(deviceId, 
+                                    0,
+                                    mode == QAudio::AudioInput,
+                                    kAudioDevicePropertyStreamConfiguration,
+                                    &propSize, 
+                                    0) == noErr) {
+
+        AudioBufferList* audioBufferList = static_cast<AudioBufferList*>(qMalloc(propSize));
+
+        if (audioBufferList != 0) {
+            if (AudioDeviceGetProperty(deviceId, 
+                                        0,
+                                        mode == QAudio::AudioInput,
+                                        kAudioDevicePropertyStreamConfiguration,
+                                        &propSize,
+                                        audioBufferList) == noErr) {
+
+                for (int i = 0; i < int(audioBufferList->mNumberBuffers); ++i) {
+                    channels += audioBufferList->mBuffers[i].mNumberChannels;
+                    rc << channels;
+                }
+            }
+
+            qFree(audioBufferList);
+        }
+    }
+
+    return rc;
+}
+
+QList<int> QAudioDeviceInfoPrivate::sampleSizeList()
+{
+    return QList<int>() << 8 << 16 << 24 << 32 << 64;
+}
+
+QList<QAudioFormat::Endian> QAudioDeviceInfoPrivate::byteOrderList()
+{
+    return QList<QAudioFormat::Endian>() << QAudioFormat::LittleEndian << QAudioFormat::BigEndian;
+}
+
+QList<QAudioFormat::SampleType> QAudioDeviceInfoPrivate::sampleTypeList()
+{
+    return QList<QAudioFormat::SampleType>() << QAudioFormat::SignedInt << QAudioFormat::UnSignedInt << QAudioFormat::Float;
+}
+
+static QByteArray get_device_info(AudioDeviceID audioDevice, QAudio::Mode mode)
+{
+    UInt32      size;
+    QByteArray  device;
+    QDataStream ds(&device, QIODevice::WriteOnly);
+    AudioStreamBasicDescription     sf;
+    CFStringRef name;
+    Boolean     isInput = mode == QAudio::AudioInput;
+
+    // Id
+    ds << quint32(audioDevice);
+
+    // Mode
+    size = sizeof(AudioStreamBasicDescription);
+    if (AudioDeviceGetProperty(audioDevice, 0, isInput, kAudioDevicePropertyStreamFormat,
+                                &size, &sf) != noErr) {
+        return QByteArray();
+    }
+    ds << quint32(mode);
+
+    // Name
+    size = sizeof(CFStringRef);
+    if (AudioDeviceGetProperty(audioDevice, 0, isInput, kAudioObjectPropertyName,
+                                &size, &name) != noErr) {
+        qWarning() << "QAudioDeviceInfo: Unable to find device name";
+    }
+    ds << QCFString::toQString(name);
+
+    CFRelease(name);
+
+    return device;
+}
+
+QByteArray QAudioDeviceInfoPrivate::defaultInputDevice()
+{
+    AudioDeviceID   audioDevice;
+    UInt32          size = sizeof(audioDevice);
+
+    if (AudioHardwareGetProperty(kAudioHardwarePropertyDefaultInputDevice, &size,
+                                    &audioDevice) != noErr) {
+        qWarning() << "QAudioDeviceInfo: Unable to find default input device";
+        return QByteArray();
+    }
+
+    return get_device_info(audioDevice, QAudio::AudioInput);
+}
+
+QByteArray QAudioDeviceInfoPrivate::defaultOutputDevice()
+{
+    AudioDeviceID audioDevice;
+    UInt32        size = sizeof(audioDevice);
+
+    if (AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice, &size,
+                                    &audioDevice) != noErr) {
+        qWarning() << "QAudioDeviceInfo: Unable to find default output device";
+        return QByteArray();
+    }
+
+    return get_device_info(audioDevice, QAudio::AudioOutput);
+}
+
+QList<QByteArray> QAudioDeviceInfoPrivate::deviceList(QAudio::Mode mode)
+{
+    QList<QByteArray>   devices;
+
+    UInt32  propSize = 0;
+
+    if (AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices, &propSize, 0) == noErr) {
+
+        const int dc = propSize / sizeof(AudioDeviceID);
+
+        if (dc > 0) {
+            AudioDeviceID*  audioDevices = new AudioDeviceID[dc];
+
+            if (AudioHardwareGetProperty(kAudioHardwarePropertyDevices, &propSize, audioDevices) == noErr) {
+                for (int i = 0; i < dc; ++i) {
+                    QByteArray info = get_device_info(audioDevices[i], mode);
+                    if (!info.isNull())
+                        devices << info;
+                }
+            }
+
+            delete audioDevices;
+        }
+    }
+
+    return devices;
+}
+
+
+QT_END_NAMESPACE
+
diff --git a/src/multimedia/audio/qaudiodeviceinfo_mac_p.h b/src/multimedia/audio/qaudiodeviceinfo_mac_p.h
new file mode 100644
index 0000000..ee593de
--- /dev/null
+++ b/src/multimedia/audio/qaudiodeviceinfo_mac_p.h
@@ -0,0 +1,97 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+
+#ifndef QDEVICEINFO_MAC_P_H
+#define QDEVICEINFO_MAC_P_H
+
+#include <CoreAudio/CoreAudio.h>
+
+#include <QtMultimedia/qaudioengine.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QAudioDeviceInfoPrivate : public QAbstractAudioDeviceInfo
+{
+public:
+    AudioDeviceID   deviceId;
+    QString         name;
+    QAudio::Mode   mode;
+
+    QAudioDeviceInfoPrivate(QByteArray const& handle, QAudio::Mode mode);
+
+    bool isFormatSupported(const QAudioFormat& format) const;
+    QAudioFormat preferredFormat() const;
+    QAudioFormat nearestFormat(const QAudioFormat& format) const;
+
+    QString deviceName() const;
+
+    QStringList codecList();
+    QList<int> frequencyList();
+    QList<int> channelsList();
+    QList<int> sampleSizeList();
+    QList<QAudioFormat::Endian> byteOrderList();
+    QList<QAudioFormat::SampleType> sampleTypeList();
+
+    static QByteArray defaultInputDevice();
+    static QByteArray defaultOutputDevice();
+
+    static QList<QByteArray> deviceList(QAudio::Mode mode);
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif  // QDEVICEINFO_MAC_P_H
diff --git a/src/multimedia/audio/qaudiodeviceinfo_win32_p.cpp b/src/multimedia/audio/qaudiodeviceinfo_win32_p.cpp
new file mode 100644
index 0000000..1a1995a
--- /dev/null
+++ b/src/multimedia/audio/qaudiodeviceinfo_win32_p.cpp
@@ -0,0 +1,378 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+
+#include <windows.h>
+#include <mmsystem.h>
+#include "qaudiodeviceinfo_win32_p.h"
+
+// For mingw toolchain mmsystem.h only defines half the defines, so add if needed.
+#ifndef WAVE_FORMAT_44M08
+#define WAVE_FORMAT_44M08 0x00000100
+#define WAVE_FORMAT_44S08 0x00000200
+#define WAVE_FORMAT_44M16 0x00000400
+#define WAVE_FORMAT_44S16 0x00000800
+#define WAVE_FORMAT_48M08 0x00001000
+#define WAVE_FORMAT_48S08 0x00002000
+#define WAVE_FORMAT_48M16 0x00004000
+#define WAVE_FORMAT_48S16 0x00008000
+#define WAVE_FORMAT_96M08 0x00010000
+#define WAVE_FORMAT_96S08 0x00020000
+#define WAVE_FORMAT_96M16 0x00040000
+#define WAVE_FORMAT_96S16 0x00080000
+#endif
+
+
+QAudioDeviceInfoPrivate::QAudioDeviceInfoPrivate(QByteArray dev, QAudio::Mode mode)
+{
+    device = QLatin1String(dev);
+    this->mode = mode;
+}
+
+QAudioDeviceInfoPrivate::~QAudioDeviceInfoPrivate()
+{
+    close();
+}
+
+bool QAudioDeviceInfoPrivate::isFormatSupported(const QAudioFormat& format) const
+{
+    return testSettings(format);
+}
+
+QAudioFormat QAudioDeviceInfoPrivate::preferredFormat() const
+{
+    QAudioFormat nearest;
+    if(mode == QAudio::AudioOutput) {
+        nearest.setFrequency(44100);
+        nearest.setChannels(2);
+        nearest.setByteOrder(QAudioFormat::LittleEndian);
+        nearest.setSampleType(QAudioFormat::SignedInt);
+        nearest.setSampleSize(16);
+        nearest.setCodec(tr("audio/pcm"));
+    } else {
+        nearest.setFrequency(11025);
+        nearest.setChannels(1);
+        nearest.setSampleType(QAudioFormat::SignedInt);
+        nearest.setSampleSize(8);
+        nearest.setCodec(tr("audio/pcm"));
+    }
+    return nearest;
+}
+
+QAudioFormat QAudioDeviceInfoPrivate::nearestFormat(const QAudioFormat& format) const
+{
+    if(testSettings(format))
+        return format;
+    else
+        return preferredFormat();
+}
+
+QString QAudioDeviceInfoPrivate::deviceName() const
+{
+    return device;
+}
+
+QStringList QAudioDeviceInfoPrivate::codecList()
+{
+    updateLists();
+    return codecz;
+}
+
+QList<int> QAudioDeviceInfoPrivate::frequencyList()
+{
+    updateLists();
+    return freqz;
+}
+
+QList<int> QAudioDeviceInfoPrivate::channelsList()
+{
+    updateLists();
+    return channelz;
+}
+
+QList<int> QAudioDeviceInfoPrivate::sampleSizeList()
+{
+    updateLists();
+    return sizez;
+}
+
+QList<QAudioFormat::Endian> QAudioDeviceInfoPrivate::byteOrderList()
+{
+    updateLists();
+    return byteOrderz;
+}
+
+QList<QAudioFormat::SampleType> QAudioDeviceInfoPrivate::sampleTypeList()
+{
+    updateLists();
+    return typez;
+}
+
+
+bool QAudioDeviceInfoPrivate::open()
+{
+    return true;
+}
+
+void QAudioDeviceInfoPrivate::close()
+{
+}
+
+bool QAudioDeviceInfoPrivate::testSettings(const QAudioFormat& format) const
+{
+    // Set nearest to closest settings that do work.
+    // See if what is in settings will work (return value).
+
+    bool testChannel = false;
+    bool testCodec = false;
+    bool testFreq = false;
+
+    int  err = 0;
+
+    // For now, just accept only audio/pcm codec
+    if(!format.codec().startsWith(tr("audio/pcm"))) {
+        err=-1;
+    } else
+        testCodec = true;
+
+    if(err>=0 && format.channels() != -1) {
+        testChannel = true;
+    }
+
+    if(err>=0 && format.frequency() != -1) {
+        testFreq = true;
+    }
+
+    if(err == 0) {
+        // settings work
+        return true;
+    }
+    return false;
+}
+
+void QAudioDeviceInfoPrivate::updateLists()
+{
+    // redo all lists based on current settings
+    bool base = false;
+    bool match = false;
+    DWORD fmt = NULL;
+    QString tmp;
+
+    if(device.compare(tr("default")) == 0)
+        base = true;
+
+    if(mode == QAudio::AudioOutput) {
+        WAVEOUTCAPS woc;
+	unsigned long iNumDevs,i;
+	iNumDevs = waveOutGetNumDevs();
+	for(i=0;i<iNumDevs;i++) {
+	    if(waveOutGetDevCaps(i, &woc, sizeof(WAVEOUTCAPS))
+	        == MMSYSERR_NOERROR) {
+		tmp = QString::fromUtf16((const unsigned short*)woc.szPname);
+		if(tmp.compare(device) == 0) {
+		    match = true;
+		    fmt = woc.dwFormats;
+		    break;
+		}
+		if(base) {
+		    match = true;
+		    fmt = woc.dwFormats;
+		    break;
+		}
+	    }
+	}
+    } else {
+        WAVEINCAPS woc;
+	unsigned long iNumDevs,i;
+	iNumDevs = waveInGetNumDevs();
+	for(i=0;i<iNumDevs;i++) {
+	    if(waveInGetDevCaps(i, &woc, sizeof(WAVEINCAPS))
+	        == MMSYSERR_NOERROR) {
+		tmp = QString::fromUtf16((const unsigned short*)woc.szPname);
+		if(tmp.compare(device) == 0) {
+		    match = true;
+		    fmt = woc.dwFormats;
+		    break;
+		}
+		if(base) {
+		    match = true;
+		    fmt = woc.dwFormats;
+		    break;
+		}
+	    }
+	}
+    }
+    sizez.clear();
+    freqz.clear();
+    channelz.clear();
+    byteOrderz.clear();
+    typez.clear();
+    codecz.clear();
+
+    if(match) {
+        if((fmt && WAVE_FORMAT_1M08)
+           || (fmt && WAVE_FORMAT_1S08)
+	   || (fmt && WAVE_FORMAT_2M08)
+	   || (fmt && WAVE_FORMAT_2S08)
+	   || (fmt && WAVE_FORMAT_4M08)
+	   || (fmt && WAVE_FORMAT_4S08)
+#ifndef Q_OS_WINCE
+	   || (fmt && WAVE_FORMAT_48M08)
+	   || (fmt && WAVE_FORMAT_48S08)
+	   || (fmt && WAVE_FORMAT_96M08)
+	   || (fmt && WAVE_FORMAT_96S08)
+#endif
+       ) {
+            sizez.append(8);
+	}
+        if((fmt && WAVE_FORMAT_1M16)
+           || (fmt && WAVE_FORMAT_1S16)
+	   || (fmt && WAVE_FORMAT_2M16)
+	   || (fmt && WAVE_FORMAT_2S16)
+	   || (fmt && WAVE_FORMAT_4M16)
+	   || (fmt && WAVE_FORMAT_4S16)
+#ifndef Q_OS_WINCE
+	   || (fmt && WAVE_FORMAT_48M16)
+	   || (fmt && WAVE_FORMAT_48S16)
+	   || (fmt && WAVE_FORMAT_96M16)
+	   || (fmt && WAVE_FORMAT_96S16)
+#endif
+       ) {
+            sizez.append(16);
+	}
+        if((fmt && WAVE_FORMAT_1M08)
+           || (fmt && WAVE_FORMAT_1S08)
+	   || (fmt && WAVE_FORMAT_1M16)
+	   || (fmt && WAVE_FORMAT_1S16)) {
+            freqz.append(11025);
+	}
+        if((fmt && WAVE_FORMAT_2M08)
+           || (fmt && WAVE_FORMAT_2S08)
+	   || (fmt && WAVE_FORMAT_2M16)
+	   || (fmt && WAVE_FORMAT_2S16)) {
+            freqz.append(22050);
+	}
+        if((fmt && WAVE_FORMAT_4M08)
+           || (fmt && WAVE_FORMAT_4S08)
+	   || (fmt && WAVE_FORMAT_4M16)
+	   || (fmt && WAVE_FORMAT_4S16)) {
+            freqz.append(44100);
+	}
+#ifndef Q_OS_WINCE
+        if((fmt && WAVE_FORMAT_48M08)
+           || (fmt && WAVE_FORMAT_48S08)
+	   || (fmt && WAVE_FORMAT_48M16)
+	   || (fmt && WAVE_FORMAT_48S16)) {
+            freqz.append(48000);
+	}
+        if((fmt && WAVE_FORMAT_96M08)
+           || (fmt && WAVE_FORMAT_96S08)
+	   || (fmt && WAVE_FORMAT_96M16)
+	   || (fmt && WAVE_FORMAT_96S16)) {
+            freqz.append(96000);
+        }
+#endif
+	channelz.append(1);
+	channelz.append(2);
+
+	byteOrderz.append(QAudioFormat::LittleEndian);
+
+	typez.append(QAudioFormat::SignedInt);
+	typez.append(QAudioFormat::UnSignedInt);
+
+	codecz.append(tr("audio/pcm"));
+    }
+}
+
+QList<QByteArray> QAudioDeviceInfoPrivate::deviceList(QAudio::Mode mode)
+{
+    Q_UNUSED(mode)
+
+    QList<QByteArray> devices;
+
+    devices.append("default");
+
+    if(mode == QAudio::AudioOutput) {
+        WAVEOUTCAPS woc;
+	unsigned long iNumDevs,i;
+	iNumDevs = waveOutGetNumDevs();
+	for(i=0;i<iNumDevs;i++) {
+	    if(waveOutGetDevCaps(i, &woc, sizeof(WAVEOUTCAPS))
+	        == MMSYSERR_NOERROR) {
+	        devices.append(QString::fromUtf16((const unsigned short*)woc.szPname).toLocal8Bit().constData());
+	    }
+	}
+    } else {
+        WAVEINCAPS woc;
+	unsigned long iNumDevs,i;
+	iNumDevs = waveInGetNumDevs();
+	for(i=0;i<iNumDevs;i++) {
+	    if(waveInGetDevCaps(i, &woc, sizeof(WAVEINCAPS))
+	        == MMSYSERR_NOERROR) {
+	        devices.append(QString::fromUtf16((const unsigned short*)woc.szPname).toLocal8Bit().constData());
+	    }
+	}
+
+    }
+    return devices;
+}
+
+QByteArray QAudioDeviceInfoPrivate::defaultOutputDevice()
+{
+    return QByteArray("default");
+}
+
+QByteArray QAudioDeviceInfoPrivate::defaultInputDevice()
+{
+    return QByteArray("default");
+}
+
diff --git a/src/multimedia/audio/qaudiodeviceinfo_win32_p.h b/src/multimedia/audio/qaudiodeviceinfo_win32_p.h
new file mode 100644
index 0000000..140a741
--- /dev/null
+++ b/src/multimedia/audio/qaudiodeviceinfo_win32_p.h
@@ -0,0 +1,108 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+
+#ifndef QAUDIODEVICEINFOWIN_H
+#define QAUDIODEVICEINFOWIN_H
+
+#include <QtCore/qbytearray.h>
+#include <QtCore/qstringlist.h>
+#include <QtCore/qlist.h>
+#include <QtCore/qdebug.h>
+
+#include <QtMultimedia/qaudiodeviceinfo.h>
+#include <QtMultimedia/qaudioengine.h>
+
+
+const unsigned int MAX_SAMPLE_RATES = 5;
+const unsigned int SAMPLE_RATES[] = { 8000, 11025, 22050, 44100, 48000 };
+
+class QAudioDeviceInfoPrivate : public QAbstractAudioDeviceInfo
+{
+    Q_OBJECT
+
+public:
+    QAudioDeviceInfoPrivate(QByteArray dev,QAudio::Mode mode);
+    ~QAudioDeviceInfoPrivate();
+
+    bool open();
+    void close();
+
+    bool testSettings(const QAudioFormat& format) const;
+    void updateLists();
+    QAudioFormat preferredFormat() const;
+    bool isFormatSupported(const QAudioFormat& format) const;
+    QAudioFormat nearestFormat(const QAudioFormat& format) const;
+    QString deviceName() const;
+    QStringList codecList();
+    QList<int> frequencyList();
+    QList<int> channelsList();
+    QList<int> sampleSizeList();
+    QList<QAudioFormat::Endian> byteOrderList();
+    QList<QAudioFormat::SampleType> sampleTypeList();
+    static QByteArray defaultInputDevice();
+    static QByteArray defaultOutputDevice();
+    static QList<QByteArray> deviceList(QAudio::Mode);
+
+private:
+    QAudio::Mode mode;
+    QString device;
+    QAudioFormat nearest;
+    QList<int> freqz;
+    QList<int> channelz;
+    QList<int> sizez;
+    QList<QAudioFormat::Endian> byteOrderz;
+    QStringList codecz;
+    QList<QAudioFormat::SampleType> typez;
+};
+
+#endif
diff --git a/src/multimedia/audio/qaudioengine.cpp b/src/multimedia/audio/qaudioengine.cpp
new file mode 100644
index 0000000..930977e
--- /dev/null
+++ b/src/multimedia/audio/qaudioengine.cpp
@@ -0,0 +1,343 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtMultimedia/qaudioengine.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QAbstractAudioDeviceInfo
+    \brief The QAbstractAudioDeviceInfo class provides access for QAudioDeviceInfo to access the audio
+    device provided by the plugin.
+    \internal
+
+    \ingroup multimedia
+
+    This class implements the audio functionality for
+    QAudioDeviceInfo, i.e., QAudioDeviceInfo keeps a
+    QAbstractAudioDeviceInfo and routes function calls to it. For a
+    description of the functionality that QAbstractAudioDeviceInfo
+    implements, you can read the class and functions documentation of
+    QAudioDeviceInfo.
+
+    \sa QAudioDeviceInfo
+*/
+
+/*!
+    \fn virtual QAudioFormat QAbstractAudioDeviceInfo::preferredFormat() const
+    Returns the nearest settings.
+*/
+
+/*!
+    \fn virtual bool QAbstractAudioDeviceInfo::isFormatSupported(const QAudioFormat& format) const
+    Returns true if \a format is available from audio device.
+*/
+
+/*!
+    \fn virtual QAudioFormat QAbstractAudioDeviceInfo::nearestFormat(const QAudioFormat& format) const
+    Returns the nearest settings \a format.
+*/
+
+/*!
+    \fn virtual QString QAbstractAudioDeviceInfo::deviceName() const
+    Returns the audio device name.
+*/
+
+/*!
+    \fn virtual QStringList QAbstractAudioDeviceInfo::codecList()
+    Returns the list of currently available codecs.
+*/
+
+/*!
+    \fn virtual QList<int> QAbstractAudioDeviceInfo::frequencyList()
+    Returns the list of currently available frequencies.
+*/
+
+/*!
+    \fn virtual QList<int> QAbstractAudioDeviceInfo::channelsList()
+    Returns the list of currently available channels.
+*/
+
+/*!
+    \fn virtual QList<int> QAbstractAudioDeviceInfo::sampleSizeList()
+    Returns the list of currently available sample sizes.
+*/
+
+/*!
+    \fn virtual QList<QAudioFormat::Endian> QAbstractAudioDeviceInfo::byteOrderList()
+    Returns the list of currently available byte orders.
+*/
+
+/*!
+    \fn virtual QList<QAudioFormat::SampleType> QAbstractAudioDeviceInfo::sampleTypeList()
+    Returns the list of currently available sample types.
+*/
+
+/*!
+    \class QAbstractAudioOutput
+    \brief The QAbstractAudioOutput class provides access for QAudioOutput to access the audio
+    device provided by the plugin.
+    \internal
+
+    \ingroup multimedia
+
+    QAbstractAudioOutput implements audio functionality for
+    QAudioOutput, i.e., QAudioOutput routes function calls to
+    QAbstractAudioOutput. For a description of the functionality that
+    is implemented, see the QAudioOutput class and function
+    descriptions.
+
+    \sa QAudioOutput
+*/
+
+/*!
+    \fn virtual QIODevice* QAbstractAudioOutput::start(QIODevice* device)
+    Uses the \a device as the QIODevice to transfer data. If \a device is null then the class
+    creates an internal QIODevice. Returns a pointer to the QIODevice being used to handle
+    the data transfer. This QIODevice can be used to write() audio data directly. Passing a
+    QIODevice allows the data to be transfered without any extra code.
+*/
+
+/*!
+    \fn virtual void QAbstractAudioOutput::stop()
+    Stops the audio output.
+*/
+
+/*!
+    \fn virtual void QAbstractAudioOutput::reset()
+    Drops all audio data in the buffers, resets buffers to zero.
+*/
+
+/*!
+    \fn virtual void QAbstractAudioOutput::suspend()
+    Stops processing audio data, preserving buffered audio data.
+*/
+
+/*!
+    \fn virtual void QAbstractAudioOutput::resume()
+    Resumes processing audio data after a suspend()
+*/
+
+/*!
+    \fn virtual int QAbstractAudioOutput::bytesFree() const
+    Returns the free space available in bytes in the audio buffer.
+*/
+
+/*!
+    \fn virtual int QAbstractAudioOutput::periodSize() const
+    Returns the period size in bytes.
+*/
+
+/*!
+    \fn virtual void QAbstractAudioOutput::setBufferSize(int value)
+    Sets the audio buffer size to \a value in bytes.
+*/
+
+/*!
+    \fn virtual int QAbstractAudioOutput::bufferSize() const
+    Returns the audio buffer size in bytes.
+*/
+
+/*!
+    \fn virtual void QAbstractAudioOutput::setNotifyInterval(int ms)
+    Sets the interval for notify() signal to be emitted. This is based on the \a ms
+    of audio data processed not on actual real-time. The resolution of the timer
+    is platform specific.
+*/
+
+/*!
+    \fn virtual int QAbstractAudioOutput::notifyInterval() const
+    Returns the notify interval in milliseconds.
+*/
+
+/*!
+    \fn virtual qint64 QAbstractAudioOutput::totalTime() const
+    Returns the amount of audio data processed since start() was called in milliseconds.
+*/
+
+/*!
+    \fn virtual qint64 QAbstractAudioOutput::clock() const
+    Returns the milliseconds since start() was called, including time in Idle and suspend states.
+*/
+
+/*!
+    \fn virtual QAudio::Error QAbstractAudioOutput::error() const
+    Returns the error state.
+*/
+
+/*!
+    \fn virtual QAudio::State QAbstractAudioOutput::state() const
+    Returns the state of audio processing.
+*/
+
+/*!
+    \fn virtual QAudioFormat QAbstractAudioOutput::format() const
+    Returns the QAudioFormat being used.
+*/
+
+/*!
+    \fn QAbstractAudioOutput::stateChanged(QAudio::State state)
+    This signal is emitted when the device \a state has changed.
+*/
+
+/*!
+    \fn QAbstractAudioOutput::notify()
+    This signal is emitted when x ms of audio data has been processed
+    the interval set by setNotifyInterval(x).
+*/
+
+
+/*!
+    \class QAbstractAudioInput
+    \brief The QAbstractAudioInput class provides access for QAudioInput to access the audio
+    device provided by the plugin.
+    \internal
+
+    \ingroup multimedia
+
+    QAudioDeviceInput keeps an instance of QAbstractAudioInput and
+    routes calls to functions of the same name to QAbstractAudioInput.
+    This means that it is QAbstractAudioInput that implements the
+    audio functionality. For a description of the functionality, see
+    the QAudioInput class description.
+
+    \sa QAudioInput
+*/
+
+/*!
+    \fn virtual QIODevice* QAbstractAudioInput::start(QIODevice* device)
+    Uses the \a device as the QIODevice to transfer data. If \a device is null
+    then the class creates an internal QIODevice. Returns a pointer to the
+    QIODevice being used to handle the data transfer. This QIODevice can be used to
+    read() audio data directly. Passing a QIODevice allows the data to be transfered
+    without any extra code.
+*/
+
+/*!
+    \fn virtual void QAbstractAudioInput::stop()
+    Stops the audio input.
+*/
+
+/*!
+    \fn virtual void QAbstractAudioInput::reset()
+    Drops all audio data in the buffers, resets buffers to zero.
+*/
+
+/*!
+    \fn virtual void QAbstractAudioInput::suspend()
+    Stops processing audio data, preserving buffered audio data.
+*/
+
+/*!
+    \fn virtual void QAbstractAudioInput::resume()
+    Resumes processing audio data after a suspend().
+*/
+
+/*!
+    \fn virtual int QAbstractAudioInput::bytesReady() const
+    Returns the amount of audio data available to read in bytes.
+*/
+
+/*!
+    \fn virtual int QAbstractAudioInput::periodSize() const
+    Returns the period size in bytes.
+*/
+
+/*!
+    \fn virtual void QAbstractAudioInput::setBufferSize(int value)
+    Sets the audio buffer size to \a value in milliseconds.
+*/
+
+/*!
+    \fn virtual int QAbstractAudioInput::bufferSize() const
+    Returns the audio buffer size in milliseconds.
+*/
+
+/*!
+    \fn virtual void QAbstractAudioInput::setNotifyInterval(int ms)
+    Sets the interval for notify() signal to be emitted. This is based
+    on the \a ms of audio data processed not on actual real-time.
+    The resolution of the timer is platform specific.
+*/
+
+/*!
+    \fn virtual int QAbstractAudioInput::notifyInterval() const
+    Returns the notify interval in milliseconds.
+*/
+
+/*!
+    \fn virtual qint64 QAbstractAudioInput::totalTime() const
+    Returns the amount of audio data processed since start() was called in milliseconds.
+*/
+
+/*!
+    \fn virtual qint64 QAbstractAudioInput::clock() const
+    Returns the milliseconds since start() was called, including time in Idle and suspend states.
+*/
+
+/*!
+    \fn virtual QAudio::Error QAbstractAudioInput::error() const
+    Returns the error state.
+*/
+
+/*!
+    \fn virtual QAudio::State QAbstractAudioInput::state() const
+    Returns the state of audio processing.
+*/
+
+/*!
+    \fn virtual QAudioFormat QAbstractAudioInput::format() const
+    Returns the QAudioFormat being used
+*/
+
+/*!
+    \fn QAbstractAudioInput::stateChanged(QAudio::State state)
+    This signal is emitted when the device \a state has changed.
+*/
+
+/*!
+    \fn QAbstractAudioInput::notify()
+    This signal is emitted when x ms of audio data has been processed
+    the interval set by setNotifyInterval(x).
+*/
+
+
+QT_END_NAMESPACE
diff --git a/src/multimedia/audio/qaudioengine.h b/src/multimedia/audio/qaudioengine.h
new file mode 100644
index 0000000..b0aa762
--- /dev/null
+++ b/src/multimedia/audio/qaudioengine.h
@@ -0,0 +1,131 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QAUDIOENGINE_H
+#define QAUDIOENGINE_H
+
+#include <QtCore/qglobal.h>
+#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qaudioformat.h>
+#include <QtMultimedia/qaudiodeviceinfo.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Multimedia)
+
+class Q_MULTIMEDIA_EXPORT QAbstractAudioDeviceInfo : public QObject
+{
+    Q_OBJECT
+
+public:
+    virtual QAudioFormat preferredFormat() const = 0;
+    virtual bool isFormatSupported(const QAudioFormat &format) const = 0;
+    virtual QAudioFormat nearestFormat(const QAudioFormat &format) const = 0;
+    virtual QString deviceName() const = 0;
+    virtual QStringList codecList() = 0;
+    virtual QList<int> frequencyList() = 0;
+    virtual QList<int> channelsList() = 0;
+    virtual QList<int> sampleSizeList() = 0;
+    virtual QList<QAudioFormat::Endian> byteOrderList() = 0;
+    virtual QList<QAudioFormat::SampleType> sampleTypeList() = 0;
+};
+
+class Q_MULTIMEDIA_EXPORT QAbstractAudioOutput : public QObject
+{
+    Q_OBJECT
+
+public:
+    virtual QIODevice* start(QIODevice* device) = 0;
+    virtual void stop() = 0;
+    virtual void reset() = 0;
+    virtual void suspend() = 0;
+    virtual void resume() = 0;
+    virtual int bytesFree() const = 0;
+    virtual int periodSize() const = 0;
+    virtual void setBufferSize(int value) = 0;
+    virtual int bufferSize() const = 0;
+    virtual void setNotifyInterval(int milliSeconds) = 0;
+    virtual int notifyInterval() const = 0;
+    virtual qint64 totalTime() const = 0;
+    virtual qint64 clock() const = 0;
+    virtual QAudio::Error error() const = 0;
+    virtual QAudio::State state() const = 0;
+    virtual QAudioFormat format() const = 0;
+
+Q_SIGNALS:
+    void stateChanged(QAudio::State);
+    void notify();
+};
+
+class Q_MULTIMEDIA_EXPORT QAbstractAudioInput : public QObject
+{
+    Q_OBJECT
+
+public:
+    virtual QIODevice* start(QIODevice* device) = 0;
+    virtual void stop() = 0;
+    virtual void reset() = 0;
+    virtual void suspend()  = 0;
+    virtual void resume() = 0;
+    virtual int bytesReady() const = 0;
+    virtual int periodSize() const = 0;
+    virtual void setBufferSize(int value) = 0;
+    virtual int bufferSize() const = 0;
+    virtual void setNotifyInterval(int milliSeconds) = 0;
+    virtual int notifyInterval() const = 0;
+    virtual qint64 totalTime() const = 0;
+    virtual qint64 clock() const = 0;
+    virtual QAudio::Error error() const = 0;
+    virtual QAudio::State state() const = 0;
+    virtual QAudioFormat format() const = 0;
+
+Q_SIGNALS:
+    void stateChanged(QAudio::State);
+    void notify();
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QAUDIOENGINE_H
diff --git a/src/multimedia/audio/qaudioengineplugin.cpp b/src/multimedia/audio/qaudioengineplugin.cpp
new file mode 100644
index 0000000..6e39004
--- /dev/null
+++ b/src/multimedia/audio/qaudioengineplugin.cpp
@@ -0,0 +1,54 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include <QtMultimedia/qaudioengineplugin.h>
+
+QT_BEGIN_NAMESPACE
+
+QAudioEnginePlugin::QAudioEnginePlugin(QObject* parent) :
+    QObject(parent)
+{}
+
+QAudioEnginePlugin::~QAudioEnginePlugin()
+{}
+
+QT_END_NAMESPACE
diff --git a/src/multimedia/audio/qaudioengineplugin.h b/src/multimedia/audio/qaudioengineplugin.h
new file mode 100644
index 0000000..8eab2d7
--- /dev/null
+++ b/src/multimedia/audio/qaudioengineplugin.h
@@ -0,0 +1,93 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#ifndef QAUDIOENGINEPLUGIN_H
+#define QAUDIOENGINEPLUGIN_H
+
+#include <QtCore/qstring.h>
+#include <QtCore/qplugin.h>
+#include <QtCore/qfactoryinterface.h>
+
+#include <QtMultimedia/qaudioformat.h>
+#include <QtMultimedia/qaudiodeviceinfo.h>
+#include <QtMultimedia/qaudioengine.h>
+
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Multimedia)
+
+struct Q_MULTIMEDIA_EXPORT QAudioEngineFactoryInterface : public QFactoryInterface
+{
+    virtual QList<QByteArray> deviceList(QAudio::Mode) const = 0;
+    virtual QAbstractAudioInput* createInput(const QByteArray& device, const QAudioFormat& format = QAudioFormat()) = 0;
+    virtual QAbstractAudioOutput* createOutput(const QByteArray& device, const QAudioFormat& format = QAudioFormat()) = 0;
+    virtual QAbstractAudioDeviceInfo* createDeviceInfo(const QByteArray& device, QAudio::Mode mode) = 0;
+};
+
+#define QAudioEngineFactoryInterface_iid \
+    "com.nokia.qt.QAudioEngineFactoryInterface"
+Q_DECLARE_INTERFACE(QAudioEngineFactoryInterface, QAudioEngineFactoryInterface_iid)
+
+class Q_MULTIMEDIA_EXPORT QAudioEnginePlugin : public QObject, public QAudioEngineFactoryInterface
+{
+    Q_OBJECT
+    Q_INTERFACES(QAudioEngineFactoryInterface:QFactoryInterface)
+
+public:
+    QAudioEnginePlugin(QObject *parent = 0);
+    ~QAudioEnginePlugin();
+
+    virtual QStringList keys() const = 0;
+    virtual QList<QByteArray> deviceList(QAudio::Mode) const = 0;
+    virtual QAbstractAudioInput* createInput(const QByteArray& device, const QAudioFormat& format = QAudioFormat()) = 0;
+    virtual QAbstractAudioOutput* createOutput(const QByteArray& device, const QAudioFormat& format = QAudioFormat()) = 0;
+    virtual QAbstractAudioDeviceInfo* createDeviceInfo(const QByteArray& device, QAudio::Mode mode) = 0;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QAUDIOENGINEPLUGIN_H
diff --git a/src/multimedia/audio/qaudioformat.cpp b/src/multimedia/audio/qaudioformat.cpp
new file mode 100644
index 0000000..6632c63
--- /dev/null
+++ b/src/multimedia/audio/qaudioformat.cpp
@@ -0,0 +1,335 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtMultimedia/qaudioformat.h>
+
+
+QT_BEGIN_NAMESPACE
+
+
+class QAudioFormatPrivate : public QSharedData
+{
+public:
+    QAudioFormatPrivate()
+    {
+        frequency = -1;
+        channels = -1;
+        sampleSize = -1;
+        byteOrder = QAudioFormat::Endian(QSysInfo::ByteOrder);
+        sampleType = QAudioFormat::Unknown;
+    }
+
+    QString codec;
+    QAudioFormat::Endian byteOrder;
+    QAudioFormat::SampleType sampleType;
+
+    int frequency;
+    int channels;
+    int sampleSize;
+};
+
+/*!
+    \class QAudioFormat
+    \brief The QAudioFormat class stores audio parameter information.
+
+    \inmodule QtMultimedia
+    \ingroup  multimedia
+    \since 4.6
+
+    An audio format specifies how data in an audio stream is arranged,
+    i.e, how the stream is to be interpreted. The encoding itself is
+    specified by the codec() used for the stream.
+
+    In addition to the encoding, QAudioFormat contains other
+    parameters that further specify how the audio data is arranged.
+    These are the frequency, the number of channels, the sample size,
+    the sample type, and the byte order. The following table describes
+    these in more detail.
+
+    \table
+        \header
+            \o Parameter
+            \o Description
+        \row
+            \o Frequency
+            \o Samples per second of audio data in Hertz.
+        \row
+            \o Number of channels
+            \o The number of audio channels (typically one for mono
+               or two for stereo)
+        \row
+            \o Sample size
+            \o How much data is stored in each sample (typically 8
+               or 16)
+        \row
+            \o Sample type
+            \o Numerical representation of sample (typically signed integer,
+               unsigned integer or float)
+        \row
+            \o Byte order
+            \o Byte ordering of sample (typically little endian, big endian)
+    \endtable
+
+    You can obtain audio formats compatible with the audio device used
+    through functions in QAudioDeviceInfo. This class also lets you
+    query available parameter values for a device, so that you can set
+    the parameters yourself. See the QAudioDeviceInfo class
+    description for details.
+*/
+
+/*!
+    Construct a new audio format.
+
+    Values are initialized as follows:
+    \list
+    \o frequency()  = -1
+    \o channels()   = -1
+    \o sampleSize() = -1
+    \o byteOrder()  = QAudioFormat::Endian(QSysInfo::ByteOrder)
+    \o sampleType() = QAudioFormat::Unknown
+    \c codec()      = ""
+    \endlist
+*/
+
+QAudioFormat::QAudioFormat():
+    d(new QAudioFormatPrivate)
+{
+}
+
+/*!
+    Construct a new audio format using \a other.
+*/
+
+QAudioFormat::QAudioFormat(const QAudioFormat &other):
+    d(other.d)
+{
+}
+
+/*!
+    Destroy this audio format.
+*/
+
+QAudioFormat::~QAudioFormat()
+{
+}
+
+/*!
+    Assigns \a other to this QAudioFormat implementation.
+*/
+
+QAudioFormat& QAudioFormat::operator=(const QAudioFormat &other)
+{
+    d = other.d;
+    return *this;
+}
+
+/*!
+  Returns true if this QAudioFormat is equal to the \a other
+  QAudioFormat; otherwise returns false.
+
+  All elements of QAudioFormat are used for the comparison.
+*/
+
+bool QAudioFormat::operator==(const QAudioFormat &other) const
+{
+    return d->frequency == other.d->frequency &&
+            d->channels == other.d->channels &&
+            d->sampleSize == other.d->sampleSize &&
+            d->byteOrder == other.d->byteOrder &&
+            d->codec == other.d->codec &&
+            d->sampleType == other.d->sampleType;
+}
+
+/*!
+  Returns true if this QAudioFormat is not equal to the \a other
+  QAudioFormat; otherwise returns false.
+
+  All elements of QAudioFormat are used for the comparison.
+*/
+
+bool QAudioFormat::operator!=(const QAudioFormat& other) const
+{
+    return !(*this == other);
+}
+
+/*!
+    Returns true if any of the parameters are invalid.
+*/
+
+bool QAudioFormat::isNull() const
+{
+    return d->frequency == -1 && d->channels == -1 &&
+            d->sampleSize == -1 &&
+            d->byteOrder == QAudioFormat::Endian(QSysInfo::ByteOrder) &&
+            d->sampleType == QAudioFormat::Unknown &&
+            d->codec.isNull();
+}
+
+/*!
+   Sets the frequency to \a frequency.
+*/
+
+void QAudioFormat::setFrequency(int frequency)
+{
+    d->frequency = frequency;
+}
+
+/*!
+    Returns the current frequency value.
+*/
+
+int QAudioFormat::frequency() const
+{
+    return d->frequency;
+}
+
+/*!
+   Sets the channels to \a channels.
+*/
+
+void QAudioFormat::setChannels(int channels)
+{
+    d->channels = channels;
+}
+
+/*!
+    Returns the current channel value.
+*/
+
+int QAudioFormat::channels() const
+{
+    return d->channels;
+}
+
+/*!
+   Sets the sampleSize to \a sampleSize.
+*/
+
+void QAudioFormat::setSampleSize(int sampleSize)
+{
+    d->sampleSize = sampleSize;
+}
+
+/*!
+    Returns the current sampleSize value.
+*/
+
+int QAudioFormat::sampleSize() const
+{
+    return d->sampleSize;
+}
+
+/*!
+   Sets the codec to \a codec.
+
+   \sa QAudioDeviceInfo::supportedCodecs()
+*/
+
+void QAudioFormat::setCodec(QString codec)
+{
+    d->codec = codec;
+}
+
+/*!
+    Returns the current codec value.
+
+   \sa QAudioDeviceInfo::supportedCodecs()
+*/
+
+QString QAudioFormat::codec() const
+{
+    return d->codec;
+}
+
+/*!
+   Sets the byteOrder to \a byteOrder.
+*/
+
+void QAudioFormat::setByteOrder(QAudioFormat::Endian byteOrder)
+{
+    d->byteOrder = byteOrder;
+}
+
+/*!
+    Returns the current byteOrder value.
+*/
+
+QAudioFormat::Endian QAudioFormat::byteOrder() const
+{
+    return d->byteOrder;
+}
+
+/*!
+   Sets the sampleType to \a sampleType.
+*/
+
+void QAudioFormat::setSampleType(QAudioFormat::SampleType sampleType)
+{
+    d->sampleType = sampleType;
+}
+
+/*!
+    Returns the current SampleType value.
+*/
+
+QAudioFormat::SampleType QAudioFormat::sampleType() const
+{
+    return d->sampleType;
+}
+
+/*!
+    \enum QAudioFormat::SampleType
+
+    \value Unknown       Not Set
+    \value SignedInt     samples are signed integers
+    \value UnSignedInt   samples are unsigned intergers
+    \value Float         samples are floats
+*/
+
+/*!
+    \enum QAudioFormat::Endian
+
+    \value BigEndian     samples are big endian byte order
+    \value LittleEndian  samples are little endian byte order
+*/
+
+QT_END_NAMESPACE
+
diff --git a/src/multimedia/audio/qaudioformat.h b/src/multimedia/audio/qaudioformat.h
new file mode 100644
index 0000000..c740969
--- /dev/null
+++ b/src/multimedia/audio/qaudioformat.h
@@ -0,0 +1,103 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#ifndef QAUDIOFORMAT_H
+#define QAUDIOFORMAT_H
+
+#include <QtCore/qobject.h>
+#include <QtCore/qglobal.h>
+#include <QtCore/qshareddata.h>
+
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Multimedia)
+
+
+class QAudioFormatPrivate;
+
+class Q_MULTIMEDIA_EXPORT QAudioFormat
+{
+public:
+    enum SampleType { Unknown, SignedInt, UnSignedInt, Float };
+    enum Endian { BigEndian = QSysInfo::BigEndian, LittleEndian = QSysInfo::LittleEndian };
+
+    QAudioFormat();
+    QAudioFormat(const QAudioFormat &other);
+    ~QAudioFormat();
+
+    QAudioFormat& operator=(const QAudioFormat &other);
+    bool operator==(const QAudioFormat &other) const;
+    bool operator!=(const QAudioFormat &other) const;
+
+    bool isNull() const;
+
+    void setFrequency(int frequency);
+    int frequency() const;
+
+    void setChannels(int channels);
+    int channels() const;
+
+    void setSampleSize(int sampleSize);
+    int sampleSize() const;
+
+    void setCodec(QString codec);
+    QString codec() const;
+
+    void setByteOrder(QAudioFormat::Endian byteOrder);
+    QAudioFormat::Endian byteOrder() const;
+
+    void setSampleType(QAudioFormat::SampleType sampleType);
+    QAudioFormat::SampleType sampleType() const;
+
+private:
+    QSharedDataPointer<QAudioFormatPrivate> d;
+};
+
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif  // QAUDIOFORMAT_H
diff --git a/src/multimedia/audio/qaudioinput.cpp b/src/multimedia/audio/qaudioinput.cpp
new file mode 100644
index 0000000..17cacc6
--- /dev/null
+++ b/src/multimedia/audio/qaudioinput.cpp
@@ -0,0 +1,400 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qaudiodeviceinfo.h>
+#include <QtMultimedia/qaudioengine.h>
+#include <QtMultimedia/qaudioinput.h>
+
+#include "qaudiodevicefactory_p.h"
+
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QAudioInput
+    \brief The QAudioInput class provides an interface for receiving audio data from an audio input device.
+
+    \inmodule QtMultimedia
+    \ingroup  multimedia
+    \since 4.6
+
+    You can construct an audio input with the system's
+    \l{QAudioDeviceInfo::defaultInputDevice()}{default audio input
+    device}. It is also possible to create QAudioInput with a
+    specific QAudioDeviceId. When you create the audio input, you
+    should also send in the QAudioFormat to be used for the recording
+    (see the QAudioFormat class description for details).
+
+    To record to a file:
+
+    QAudioInput lets you record audio with an audio input device. The
+    default constructor of this class will use the systems default
+    audio device, but you can also specify a QAudioDeviceId for a
+    specific device. You also need to pass in the QAudioFormat in
+    which you wish to record.
+
+    Starting up the QAudioInput is simply a matter of calling start()
+    with a QIODevice opened for writing. For instance, to record to a
+    file, you can:
+
+    \code
+    {
+      QFile outputFile;
+      outputFile.setFileName("/tmp/test.raw");
+      outputFile.open( QIODevice::WriteOnly | QIODevice::Truncate );
+
+      QAudioFormat format;
+      // set up the format you want, eg.
+      format.setFrequency(8000);
+      format.setChannels(1);
+      format.setSampleSize(8);
+      format.setCodec("audio/pcm");
+      format.setByteOrder(QAudioFormat::LittleEndian);
+      format.setSampleType(QAudioFormat::UnSignedInt);
+
+      QAudioInput *audio = new QAudioInput(format, this);
+      QTimer::singleShot(3000, this, SLOT(stopRecording()));
+      audio->start(outputFile);
+      // Records audio for 3000ms
+    }
+    \endcode
+
+    This will start recording if the format specified is supported by
+    the input device (you can check this with
+    QAudioDeviceInfo::isFormatSupported(). In case there are any
+    snags, use the error() function to check what went wrong. We stop
+    recording in the \c stopRecording() slot.
+
+    \code
+    void stopRecording()
+    {
+      audio->stop();
+      outputFile->close();
+    }
+    \endcode
+
+    At any point in time, QAudioInput will be in one of four states:
+    active, suspended, stopped, or idle. These states are specified by
+    the QAudio::State enum. You can request a state change directly through
+    suspend(), resume(), stop(), reset(), and start(). The current
+    state is reported by state(). QAudioOutput will also signal you
+    when the state changes (stateChanged()).
+
+    QAudioInput provides several ways of measuring the time that has
+    passed since the start() of the recording. The \c totalTime()
+    function returns the length of the stream in microseconds written,
+    i.e., it leaves out the times the audio input was suspended or idle.
+    The clock() function returns the time elapsed since start() was called regardless of
+    which states the QAudioInput has been in.
+
+    If an error should occur, you can fetch its reason with error().
+    The possible error reasons are described by the QAudio::Error enum.
+
+    \sa QAudioOutput, QAudioDeviceInfo
+*/
+
+/*!
+    Construct a new audio input and attach it to \a parent.
+    The default audio input device is used with the output
+    \a format parameters.
+*/
+
+QAudioInput::QAudioInput(const QAudioFormat &format, QObject *parent):
+    QObject(parent)
+{
+    d = QAudioDeviceFactory::createDefaultInputDevice(format);
+    connect(d, SIGNAL(notify()), SIGNAL(notify()));
+    connect(d, SIGNAL(stateChanged(QAudio::State)), SIGNAL(stateChanged(QAudio::State)));
+}
+
+/*!
+    Construct a new audio input and attach it to \a parent.
+    The \a id of the audio input device is used with the input
+    \a format parameters.
+*/
+
+QAudioInput::QAudioInput(const QAudioDeviceId &id, const QAudioFormat &format, QObject *parent):
+    QObject(parent)
+{
+    d = QAudioDeviceFactory::createInputDevice(id, format);
+    connect(d, SIGNAL(notify()), SIGNAL(notify()));
+    connect(d, SIGNAL(stateChanged(QAudio::State)), SIGNAL(stateChanged(QAudio::State)));
+}
+
+/*!
+    Destroy this audio input.
+*/
+
+QAudioInput::~QAudioInput()
+{
+    delete d;
+}
+
+/*!
+    Uses the \a device as the QIODevice to transfer data.
+    If \a device is null then the class creates an internal QIODevice.
+    Returns a pointer to the QIODevice being used to handle the data
+    transfer. This QIODevice can be used to read() audio data
+    directly.
+    Passing a QIODevice allows the data to be transfered without any extra code.
+    All that is required is to open the QIODevice.
+
+    /sa QIODevice
+*/
+
+QIODevice* QAudioInput::start(QIODevice* device)
+{
+    /*
+    PULL MODE (valid QIODevice)
+    -If currently not StopState, stop
+    -If previous start was push mode, delete internal QIODevice.
+    -open audio input.
+    If ok, NoError and ActiveState, else OpenError and StopState.
+    -emit stateChanged()
+    -return device
+
+    PUSH MODE (device = 0)
+    -If currently not StopState, stop
+    -If no internal QIODevice, create one.
+    -open audio input.
+    -If ok, NoError and IdleState, else OpenError and StopState
+    -emit stateChanged()
+    -return internal QIODevice
+    */
+    return d->start(device);
+}
+
+/*!
+    Returns the QAudioFormat being used.
+*/
+
+QAudioFormat QAudioInput::format() const
+{
+    return d->format();
+}
+
+/*!
+    Stops the audio input.
+*/
+
+void QAudioInput::stop()
+{
+    /*
+    -If StopState, return
+    -set to StopState
+    -detach from audio device
+    -emit stateChanged()
+    */
+    d->stop();
+}
+
+/*!
+    Drops all audio data in the buffers, resets buffers to zero.
+*/
+
+void QAudioInput::reset()
+{
+    /*
+    -drop all buffered audio, set buffers to zero.
+    -call stop()
+    */
+    d->reset();
+}
+
+/*!
+    Stops processing audio data, preserving buffered audio data.
+*/
+
+void QAudioInput::suspend()
+{
+    /*
+    -If not ActiveState|IdleState, return
+    -stop processing audio, saving all buffered audio data
+    -set NoError and SuspendState
+    -emit stateChanged()
+    */
+    d->suspend();
+}
+
+/*!
+    Resumes processing audio data after a suspend().
+*/
+
+void QAudioInput::resume()
+{
+    /*
+    -If SuspendState, return
+    -resume audio
+    -(PULL MODE): set ActiveState, NoError
+    -(PUSH MODE): set IdleState, NoError
+    -kick start audio if needed
+    -emit stateChanged()
+    */
+     d->resume();
+}
+
+/*!
+    Sets the audio buffer size to \a value milliseconds.
+
+    Note: This function can be called anytime before start(), calls to this
+    are ignored after start(). It should not be assumed that the buffer size
+    set is the actual buffer size used, calling bufferSize() anytime after start()
+    will return the actual buffer size being used.
+
+*/
+
+void QAudioInput::setBufferSize(int value)
+{
+    d->setBufferSize(value);
+}
+
+/*!
+    Returns the audio buffer size in milliseconds.
+
+    If called before start(), returns platform default value.
+    If called before start() but setBufferSize() was called prior, returns value set by setBufferSize().
+    If called after start(), returns the actual buffer size being used. This may not be what was set previously
+    by setBufferSize().
+
+*/
+
+int QAudioInput::bufferSize() const
+{
+    return d->bufferSize();
+}
+
+/*!
+    Returns the amount of audio data available to read in bytes.
+*/
+
+int QAudioInput::bytesReady() const
+{
+    /*
+    -If not ActiveState|IdleState, return 0
+    -return amount of audio data available to read
+    */
+    return d->bytesReady();
+}
+
+/*!
+    Returns the period size in bytes.
+
+    Note: This is the recommended read size in bytes.
+*/
+
+int QAudioInput::periodSize() const
+{
+    return d->periodSize();
+}
+
+/*!
+    Sets the interval for notify() signal to be emitted.
+    This is based on the \a ms of audio data processed
+    not on actual real-time. The resolution of the timer is platform specific.
+*/
+
+void QAudioInput::setNotifyInterval(int ms)
+{
+    d->setNotifyInterval(ms);
+}
+
+/*!
+    Returns the notify interval in milliseconds.
+*/
+
+int QAudioInput::notifyInterval() const
+{
+    return d->notifyInterval();
+}
+
+/*!
+    Returns the amount of audio data processed since start()
+    was called in microseconds.
+*/
+
+qint64 QAudioInput::totalTime() const
+{
+    return d->totalTime();
+}
+
+/*!
+    Returns the microseconds since start() was called, including time in Idle and
+    Suspend states.
+*/
+
+qint64 QAudioInput::clock() const
+{
+    return d->clock();
+}
+
+/*!
+    Returns the error state.
+*/
+
+QAudio::Error QAudioInput::error() const
+{
+    return d->error();
+}
+
+/*!
+    Returns the state of audio processing.
+*/
+
+QAudio::State QAudioInput::state() const
+{
+    return d->state();
+}
+
+/*!
+    \fn QAudioInput::stateChanged(QAudio::State state)
+    This signal is emitted when the device \a state has changed.
+*/
+
+/*!
+    \fn QAudioInput::notify()
+    This signal is emitted when x ms of audio data has been processed
+    the interval set by setNotifyInterval(x).
+*/
+
+QT_END_NAMESPACE
+
diff --git a/src/multimedia/audio/qaudioinput.h b/src/multimedia/audio/qaudioinput.h
new file mode 100644
index 0000000..b0f1aed
--- /dev/null
+++ b/src/multimedia/audio/qaudioinput.h
@@ -0,0 +1,108 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#ifndef QAUDIOINPUT_H
+#define QAUDIOINPUT_H
+
+#include <QtCore/qiodevice.h>
+#include <QtCore/qglobal.h>
+
+#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qaudioformat.h>
+#include <QtMultimedia/qaudiodeviceid.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Multimedia)
+
+
+class QAbstractAudioInput;
+
+class Q_MULTIMEDIA_EXPORT QAudioInput : public QObject
+{
+    Q_OBJECT
+
+public:
+    explicit QAudioInput(const QAudioFormat &format = QAudioFormat(), QObject *parent = 0);
+    explicit QAudioInput(const QAudioDeviceId &id, const QAudioFormat &format = QAudioFormat(), QObject *parent = 0);
+    ~QAudioInput();
+
+    QAudioFormat format() const;
+
+    QIODevice* start(QIODevice *device = 0);
+    void stop();
+    void reset();
+    void suspend();
+    void resume();
+
+    void setBufferSize(int bytes);
+    int bufferSize() const;
+
+    int bytesReady() const;
+    int periodSize() const;
+
+    void setNotifyInterval(int milliSeconds);
+    int notifyInterval() const;
+
+    qint64 totalTime() const;
+    qint64 clock() const;
+
+    QAudio::Error error() const;
+    QAudio::State state() const;
+
+Q_SIGNALS:
+    void stateChanged(QAudio::State);
+    void notify();
+
+private:
+    Q_DISABLE_COPY(QAudioInput);
+
+    QAbstractAudioInput* d;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QAUDIOINPUT_H
diff --git a/src/multimedia/audio/qaudioinput_alsa_p.cpp b/src/multimedia/audio/qaudioinput_alsa_p.cpp
new file mode 100644
index 0000000..6f00469
--- /dev/null
+++ b/src/multimedia/audio/qaudioinput_alsa_p.cpp
@@ -0,0 +1,688 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qcoreapplication.h>
+#include "qaudioinput_alsa_p.h"
+
+//#define DEBUG_AUDIO 1
+
+QAudioInputPrivate::QAudioInputPrivate(const QByteArray &device, const QAudioFormat& audioFormat):
+    settings(audioFormat)
+{
+    bytesAvailable = 0;
+    handle = 0;
+    ahandler = 0;
+    access = SND_PCM_ACCESS_RW_INTERLEAVED;
+    pcmformat = SND_PCM_FORMAT_S16;
+    buffer_size = 0;
+    period_size = 0;
+    buffer_time = 100000;
+    period_time = 20000;
+    totalTimeValue = 0;
+    intervalTime = 1000;
+    audioBuffer = 0;
+    errorState = QAudio::NoError;
+    deviceState = QAudio::StopState;
+    audioSource = 0;
+    pullMode = true;
+    resuming = false;
+
+    QStringList list1 = QString(tr(device)).split(tr(":"));
+    m_device = QByteArray(list1.at(0).toLocal8Bit().constData());
+
+    timer = new QTimer(this);
+    connect(timer,SIGNAL(timeout()),SLOT(userFeed()));
+}
+
+QAudioInputPrivate::~QAudioInputPrivate()
+{
+    close();
+    disconnect(timer, SIGNAL(timeout()));
+    QCoreApplication::processEvents();
+    delete timer;
+}
+
+QAudio::Error QAudioInputPrivate::error() const
+{
+    return errorState;
+}
+
+QAudio::State QAudioInputPrivate::state() const
+{
+    return deviceState;
+}
+
+
+QAudioFormat QAudioInputPrivate::format() const
+{
+    return settings;
+}
+
+int QAudioInputPrivate::xrun_recovery(int err)
+{
+    int  count = 0;
+    bool reset = false;
+
+    if(err == -EPIPE) {
+        errorState = QAudio::UnderrunError;
+        err = snd_pcm_prepare(handle);
+        if(err < 0)
+            reset = true;
+
+    } else if((err == -ESTRPIPE)||(err == -EIO)) {
+        errorState = QAudio::IOError;
+        while((err = snd_pcm_resume(handle)) == -EAGAIN){
+            usleep(100);
+            count++;
+            if(count > 5) {
+                reset = true;
+                break;
+            }
+        }
+        if(err < 0) {
+            err = snd_pcm_prepare(handle);
+            if(err < 0)
+                reset = true;
+        }
+    }
+    if(reset) {
+        close();
+        open();
+        snd_pcm_prepare(handle);
+        return 0;
+    }
+    return err;
+}
+
+int QAudioInputPrivate::setFormat()
+{
+    snd_pcm_format_t format = SND_PCM_FORMAT_S16;
+
+    if(settings.sampleSize() == 8) {
+        format = SND_PCM_FORMAT_U8;
+    } else if(settings.sampleSize() == 16) {
+        if(settings.sampleType() == QAudioFormat::SignedInt) {
+            if(settings.byteOrder() == QAudioFormat::LittleEndian)
+                format = SND_PCM_FORMAT_S16_LE;
+            else
+                format = SND_PCM_FORMAT_S16_BE;
+        } else if(settings.sampleType() == QAudioFormat::UnSignedInt) {
+            if(settings.byteOrder() == QAudioFormat::LittleEndian)
+                format = SND_PCM_FORMAT_U16_LE;
+            else
+                format = SND_PCM_FORMAT_U16_BE;
+        }
+    } else if(settings.sampleSize() == 24) {
+        if(settings.sampleType() == QAudioFormat::SignedInt) {
+            if(settings.byteOrder() == QAudioFormat::LittleEndian)
+                format = SND_PCM_FORMAT_S24_LE;
+            else
+                format = SND_PCM_FORMAT_S24_BE;
+        } else if(settings.sampleType() == QAudioFormat::UnSignedInt) {
+            if(settings.byteOrder() == QAudioFormat::LittleEndian)
+                format = SND_PCM_FORMAT_U24_LE;
+            else
+                format = SND_PCM_FORMAT_U24_BE;
+        }
+    } else if(settings.sampleSize() == 32) {
+        if(settings.sampleType() == QAudioFormat::SignedInt) {
+            if(settings.byteOrder() == QAudioFormat::LittleEndian)
+                format = SND_PCM_FORMAT_S32_LE;
+            else
+                format = SND_PCM_FORMAT_S32_BE;
+        } else if(settings.sampleType() == QAudioFormat::UnSignedInt) {
+            if(settings.byteOrder() == QAudioFormat::LittleEndian)
+                format = SND_PCM_FORMAT_U32_LE;
+            else
+                format = SND_PCM_FORMAT_U32_BE;
+        } else if(settings.sampleType() == QAudioFormat::Float) {
+            if(settings.byteOrder() == QAudioFormat::LittleEndian)
+                format = SND_PCM_FORMAT_FLOAT_LE;
+            else
+                format = SND_PCM_FORMAT_FLOAT_BE;
+        }
+    } else if(settings.sampleSize() == 64) {
+        if(settings.byteOrder() == QAudioFormat::LittleEndian)
+            format = SND_PCM_FORMAT_FLOAT64_LE;
+        else
+            format = SND_PCM_FORMAT_FLOAT64_BE;
+    }
+
+    return snd_pcm_hw_params_set_format( handle, hwparams, format);
+}
+
+QIODevice* QAudioInputPrivate::start(QIODevice* device)
+{
+    if(deviceState != QAudio::StopState)
+        close();
+
+    if(!pullMode && audioSource) {
+        delete audioSource;
+    }
+
+    if(device) {
+        //set to pull mode
+        pullMode = true;
+        audioSource = device;
+    } else {
+        //set to push mode
+        pullMode = false;
+        audioSource = new InputPrivate(this);
+        audioSource->open(QIODevice::ReadOnly | QIODevice::Unbuffered);
+    }
+
+    if( !open() )
+        return 0;
+
+    emit stateChanged(deviceState);
+
+    return audioSource;
+}
+
+void QAudioInputPrivate::stop()
+{
+    if(deviceState == QAudio::StopState)
+        return;
+
+    deviceState = QAudio::StopState;
+
+    close();
+    emit stateChanged(deviceState);
+}
+
+bool QAudioInputPrivate::open()
+{
+#ifdef DEBUG_AUDIO
+    QTime now(QTime::currentTime());
+    qDebug()<<now.second()<<"s "<<now.msec()<<"ms :open()";
+#endif
+    timeStamp.restart();
+
+    int dir;
+    int err=-1;
+    int count=0;
+    unsigned int freakuency=settings.frequency();
+
+    QString dev = QString(tr(m_device.constData()));
+    if(!dev.contains(tr("default"))) {
+        dev = QString(tr("default:CARD=%1")).arg(tr(m_device.constData()));
+    }
+
+    // Step 1: try and open the device
+    while((count < 5) && (err < 0)) {
+        err=snd_pcm_open(&handle,dev.toLocal8Bit().constData(),SND_PCM_STREAM_CAPTURE,0);
+        if(err < 0)
+            count++;
+    }
+    if (( err < 0)||(handle == 0)) {
+        errorState = QAudio::OpenError;
+        deviceState = QAudio::StopState;
+        emit stateChanged(deviceState);
+        return false;
+    }
+    snd_pcm_nonblock( handle, 0 );
+
+    // Step 2: Set the desired HW parameters.
+    snd_pcm_hw_params_alloca( &hwparams );
+
+    bool fatal = false;
+    QString errMessage;
+    unsigned int chunks = 8;
+
+    err = snd_pcm_hw_params_any( handle, hwparams );
+    if ( err < 0 ) {
+        fatal = true;
+        errMessage = QString(tr("QAudioInput: snd_pcm_hw_params_any: err = %1")).arg(err);
+    }
+    if ( !fatal ) {
+        err = snd_pcm_hw_params_set_rate_resample( handle, hwparams, 1 );
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioInput: snd_pcm_hw_params_set_rate_resample: err = %1")).arg(err);
+        }
+    }
+    if ( !fatal ) {
+        err = snd_pcm_hw_params_set_access( handle, hwparams, access );
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioInput: snd_pcm_hw_params_set_access: err = %1")).arg(err);
+        }
+    }
+    if ( !fatal ) {
+        err = setFormat();
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioInput: snd_pcm_hw_params_set_format: err = %1")).arg(err);
+        }
+    }
+    if ( !fatal ) {
+        err = snd_pcm_hw_params_set_channels( handle, hwparams, (unsigned int)settings.channels() );
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioInput: snd_pcm_hw_params_set_channels: err = %1")).arg(err);
+        }
+    }
+    if ( !fatal ) {
+        err = snd_pcm_hw_params_set_rate_near( handle, hwparams, &freakuency, 0 );
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioInput: snd_pcm_hw_params_set_rate_near: err = %1")).arg(err);
+        }
+    }
+    if ( !fatal ) {
+        err = snd_pcm_hw_params_set_buffer_time_near(handle, hwparams, &buffer_time, &dir);
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioInput: snd_pcm_hw_params_set_buffer_time_near: err = %1")).arg(err);
+        }
+    }
+    if ( !fatal ) {
+        err = snd_pcm_hw_params_set_period_time_near(handle, hwparams, &period_time, &dir);
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioInput: snd_pcm_hw_params_set_period_time_near: err = %1")).arg(err);
+        }
+    }
+    if ( !fatal ) {
+        err = snd_pcm_hw_params_set_periods_near(handle, hwparams, &chunks, &dir);
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioInput: snd_pcm_hw_params_set_periods_near: err = %1")).arg(err);
+        }
+    }
+    if ( !fatal ) {
+        err = snd_pcm_hw_params(handle, hwparams);
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioInput: snd_pcm_hw_params: err = %1")).arg(err);
+        }
+    }
+    if( err < 0) {
+        qWarning()<<errMessage;
+        errorState = QAudio::OpenError;
+        deviceState = QAudio::StopState;
+        emit stateChanged(deviceState);
+        return false;
+    }
+    snd_pcm_hw_params_get_buffer_size(hwparams,&buffer_frames);
+    buffer_size = snd_pcm_frames_to_bytes(handle,buffer_frames);
+    snd_pcm_hw_params_get_period_size(hwparams,&period_frames, &dir);
+    period_size = snd_pcm_frames_to_bytes(handle,period_frames);
+    snd_pcm_hw_params_get_buffer_time(hwparams,&buffer_time, &dir);
+    snd_pcm_hw_params_get_period_time(hwparams,&period_time, &dir);
+
+    // Step 3: Set the desired SW parameters.
+    snd_pcm_sw_params_t *swparams;
+    snd_pcm_sw_params_alloca(&swparams);
+    snd_pcm_sw_params_current(handle, swparams);
+    snd_pcm_sw_params_set_start_threshold(handle,swparams,period_frames);
+    snd_pcm_sw_params_set_stop_threshold(handle,swparams,buffer_frames);
+    snd_pcm_sw_params_set_avail_min(handle, swparams,period_frames);
+    snd_pcm_sw_params(handle, swparams);
+
+    // Step 4: Prepare audio
+    if(audioBuffer == 0)
+        audioBuffer = new char[buffer_size];
+    snd_pcm_prepare( handle );
+    snd_pcm_start(handle);
+
+    // Step 5: Setup timer
+    bytesAvailable = bytesReady();
+
+    if(pullMode)
+        connect(audioSource,SIGNAL(readyRead()),this,SLOT(userFeed()));
+
+    // Step 6: Start audio processing
+    chunks = buffer_size/period_size;
+    timer->start(period_time*chunks/2000);
+
+    errorState  = QAudio::NoError;
+    deviceState = QAudio::ActiveState;
+
+    totalTimeValue = 0;
+
+    return true;
+}
+
+void QAudioInputPrivate::close()
+{
+    deviceState = QAudio::StopState;
+    timer->stop();
+
+    if ( handle ) {
+        snd_pcm_drop( handle );
+        snd_pcm_close( handle );
+        handle = 0;
+        delete [] audioBuffer;
+        audioBuffer=0;
+    }
+}
+
+int QAudioInputPrivate::bytesReady() const
+{
+    if(resuming)
+        return period_size;
+
+    if(deviceState != QAudio::ActiveState)
+        return 0;
+    int frames = snd_pcm_avail_update(handle);
+    if((int)frames > (int)buffer_frames)
+        frames = buffer_frames;
+
+    return snd_pcm_frames_to_bytes(handle, frames);
+}
+
+qint64 QAudioInputPrivate::read(char* data, qint64 len)
+{
+    Q_UNUSED(data)
+    Q_UNUSED(len)
+    // Read in some audio data and write it to QIODevice, pull mode
+    if ( !handle )
+        return 0;
+
+    bytesAvailable = bytesReady();
+
+    int count=0, err = 0;
+    while(count < 5) {
+        int chunks = bytesAvailable/period_size;
+        int frames = chunks*period_frames;
+        if(frames > (int)buffer_frames)
+            frames = buffer_frames;
+        int readFrames = snd_pcm_readi(handle, audioBuffer, frames);
+        if (readFrames >= 0) {
+            err = snd_pcm_frames_to_bytes(handle, readFrames);
+#ifdef DEBUG_AUDIO
+            qDebug()<<QString(tr("PULL: read in bytes = %1 (frames=%2)")).arg(err).arg(readFrames).toLatin1().constData();
+#endif
+            break;
+        } else if((readFrames == -EAGAIN) || (readFrames == -EINTR)) {
+            errorState = QAudio::IOError;
+            err = 0;
+            break;
+        } else {
+            if(readFrames == -EPIPE) {
+                errorState = QAudio::UnderrunError;
+                err = snd_pcm_prepare(handle);
+            } else if(readFrames == -ESTRPIPE) {
+                err = snd_pcm_prepare(handle);
+            }
+            if(err != 0) break;
+        }
+        count++;
+    }
+    if(err > 0) {
+        // got some send it onward
+#ifdef DEBUG_AUDIO
+        qDebug()<<"PULL: frames to write to QIODevice = "<<
+            snd_pcm_bytes_to_frames( handle, (int)err )<<" ("<<err<<") bytes";
+#endif
+        if(deviceState != QAudio::ActiveState)
+            return 0;
+
+        qint64 l = audioSource->write(audioBuffer,err);
+        if(l < 0) {
+            close();
+            errorState = QAudio::IOError;
+            deviceState = QAudio::StopState;
+            emit stateChanged(deviceState);
+        } else if(l == 0) {
+            errorState = QAudio::NoError;
+            deviceState = QAudio::IdleState;
+        } else {
+            totalTimeValue += snd_pcm_bytes_to_frames(handle, err)*1000000/settings.frequency();
+            resuming = false;
+            errorState = QAudio::NoError;
+            deviceState = QAudio::ActiveState;
+        }
+        return l;
+    }
+    return 0;
+}
+
+void QAudioInputPrivate::resume()
+{
+    if(deviceState == QAudio::SuspendState) {
+        int err = 0;
+
+        if(handle) {
+            err = snd_pcm_prepare( handle );
+            if(err < 0)
+                xrun_recovery(err);
+
+            err = snd_pcm_start(handle);
+            if(err < 0)
+                xrun_recovery(err);
+
+            bytesAvailable = buffer_size;
+        }
+        resuming = true;
+        deviceState = QAudio::ActiveState;
+        int chunks = buffer_size/period_size;
+        timer->start(buffer_time*chunks/2000);
+        emit stateChanged(deviceState);
+    }
+}
+
+void QAudioInputPrivate::setBufferSize(int value)
+{
+    buffer_size = value;
+}
+
+int QAudioInputPrivate::bufferSize() const
+{
+    return buffer_size;
+}
+
+int QAudioInputPrivate::periodSize() const
+{
+    return period_size;
+}
+
+void QAudioInputPrivate::setNotifyInterval(int ms)
+{
+    intervalTime = ms;
+}
+
+int QAudioInputPrivate::notifyInterval() const
+{
+    return intervalTime;
+}
+
+qint64 QAudioInputPrivate::totalTime() const
+{
+    return totalTimeValue;
+}
+
+void QAudioInputPrivate::suspend()
+{
+    if(deviceState == QAudio::ActiveState||resuming) {
+        timer->stop();
+        deviceState = QAudio::SuspendState;
+        emit stateChanged(deviceState);
+    }
+}
+
+void QAudioInputPrivate::userFeed()
+{
+    if(deviceState == QAudio::StopState || deviceState == QAudio::SuspendState)
+        return;
+#ifdef DEBUG_AUDIO
+    QTime now(QTime::currentTime());
+    qDebug()<<now.second()<<"s "<<now.msec()<<"ms :userFeed() IN";
+#endif
+    deviceReady();
+}
+
+bool QAudioInputPrivate::deviceReady()
+{
+    if(pullMode) {
+        // reads some audio data and writes it to QIODevice
+        read(0,0);
+    } else {
+        // emits readyRead() so user will call read() on QIODevice to get some audio data
+        InputPrivate* a = qobject_cast<InputPrivate*>(audioSource);
+        a->trigger();
+    }
+    bytesAvailable = bytesReady();
+
+    if(deviceState != QAudio::ActiveState)
+        return true;
+
+    if(timeStamp.elapsed() > intervalTime && intervalTime > 50) {
+        emit notify();
+        timeStamp.restart();
+    }
+    return true;
+}
+
+qint64 QAudioInputPrivate::clock() const
+{
+    if(!handle)
+        return 0;
+
+    if(deviceState != QAudio::ActiveState)
+        return 0;
+
+    snd_pcm_status_t* status;
+    snd_pcm_status_alloca(&status);
+
+    snd_timestamp_t t1,t2;
+    if( snd_pcm_status(handle, status) >= 0) {
+        snd_pcm_status_get_tstamp(status,&t1);
+        snd_pcm_status_get_trigger_tstamp(status,&t2);
+        t1.tv_sec-=t2.tv_sec;
+
+        signed long l = (signed long)t1.tv_usec - (signed long)t2.tv_usec;
+        if(l < 0) {
+            t1.tv_sec--;
+            l = -l;
+            l %= 1000000;
+        }
+        return ((t1.tv_sec * 1000)+l/1000);
+    } else
+        return 0;
+}
+
+void QAudioInputPrivate::reset()
+{
+    if(handle)
+        snd_pcm_reset(handle);
+}
+
+void QAudioInputPrivate::drain()
+{
+    if(handle)
+        snd_pcm_drain(handle);
+}
+
+InputPrivate::InputPrivate(QAudioInputPrivate* audio)
+{
+    audioDevice = qobject_cast<QAudioInputPrivate*>(audio);
+}
+
+InputPrivate::~InputPrivate()
+{
+}
+
+qint64 InputPrivate::readData( char* data, qint64 len)
+{
+    // push mode, user read() called
+    if((audioDevice->state() != QAudio::ActiveState) && !audioDevice->resuming)
+        return 0;
+
+    int readFrames;
+    int count=0, err = 0;
+
+    while(count < 5) {
+        int frames = snd_pcm_bytes_to_frames(audioDevice->handle, len);
+        readFrames = snd_pcm_readi(audioDevice->handle, data, frames);
+        if (readFrames >= 0) {
+            err = snd_pcm_frames_to_bytes(audioDevice->handle, readFrames);
+#ifdef DEBUG_AUDIO
+            qDebug()<<QString(tr("PUSH: read in bytes = %1 (frames=%2)")).arg(err).arg(readFrames).toLatin1().constData();
+#endif
+            break;
+        } else if((readFrames == -EAGAIN) || (readFrames == -EINTR)) {
+            audioDevice->errorState = QAudio::IOError;
+            err = 0;
+            break;
+        } else {
+            if(readFrames == -EPIPE) {
+                audioDevice->errorState = QAudio::UnderrunError;
+                err = snd_pcm_prepare(audioDevice->handle);
+            } else if(readFrames == -ESTRPIPE) {
+                err = snd_pcm_prepare(audioDevice->handle);
+            }
+            if(err != 0) break;
+        }
+        count++;
+    }
+    if(err > 0 && readFrames > 0) {
+        audioDevice->totalTimeValue += readFrames*1000/audioDevice->settings.frequency()*1000;
+        audioDevice->deviceState = QAudio::ActiveState;
+        return err;
+    }
+    return 0;
+}
+
+qint64 InputPrivate::writeData(const char* data, qint64 len)
+{
+    Q_UNUSED(data)
+    Q_UNUSED(len)
+    return 0;
+}
+
+void InputPrivate::trigger()
+{
+    emit readyRead();
+}
+
diff --git a/src/multimedia/audio/qaudioinput_alsa_p.h b/src/multimedia/audio/qaudioinput_alsa_p.h
new file mode 100644
index 0000000..21c8064
--- /dev/null
+++ b/src/multimedia/audio/qaudioinput_alsa_p.h
@@ -0,0 +1,151 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+
+#ifndef QAUDIOINPUTALSA_H
+#define QAUDIOINPUTALSA_H
+
+#include <alsa/asoundlib.h>
+
+#include <QtCore/qfile.h>
+#include <QtCore/qdebug.h>
+#include <QtCore/qtimer.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qstringlist.h>
+#include <QtCore/qdatetime.h>
+
+#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qaudiodeviceinfo.h>
+#include <QtMultimedia/qaudioengine.h>
+
+class InputPrivate;
+
+class QAudioInputPrivate : public QAbstractAudioInput
+{
+    Q_OBJECT
+public:
+    QAudioInputPrivate(const QByteArray &device, const QAudioFormat& audioFormat);
+    ~QAudioInputPrivate();
+
+    qint64 read(char* data, qint64 len);
+
+    QIODevice* start(QIODevice* device = 0);
+    void stop();
+    void reset();
+    void suspend();
+    void resume();
+    int bytesReady() const;
+    int periodSize() const;
+    void setBufferSize(int value);
+    int bufferSize() const;
+    void setNotifyInterval(int milliSeconds);
+    int notifyInterval() const;
+    qint64 totalTime() const;
+    qint64 clock() const;
+    QAudio::Error error() const;
+    QAudio::State state() const;
+    QAudioFormat format() const;
+    bool resuming;
+    snd_pcm_t* handle;
+    qint64 totalTimeValue;
+    QIODevice* audioSource;
+    QAudioFormat settings;
+    QAudio::Error errorState;
+    QAudio::State deviceState;
+
+private slots:
+    void userFeed();
+    bool deviceReady();
+
+private:
+    int xrun_recovery(int err);
+    int setFormat();
+    bool open();
+    void close();
+    void drain();
+
+    QTimer* timer;
+    QTime timeStamp;
+    int intervalTime;
+    char* audioBuffer;
+    int bytesAvailable;
+    QByteArray m_device;
+    bool pullMode;
+    int buffer_size;
+    int period_size;
+    unsigned int buffer_time;
+    unsigned int period_time;
+    snd_pcm_uframes_t buffer_frames;
+    snd_pcm_uframes_t period_frames;
+    snd_async_handler_t* ahandler;
+    snd_pcm_access_t access;
+    snd_pcm_format_t pcmformat;
+    snd_timestamp_t* timestamp;
+    snd_pcm_hw_params_t *hwparams;
+};
+
+class InputPrivate : public QIODevice
+{
+    Q_OBJECT
+public:
+    InputPrivate(QAudioInputPrivate* audio);
+    ~InputPrivate();
+
+    qint64 readData( char* data, qint64 len);
+    qint64 writeData(const char* data, qint64 len);
+
+    void trigger();
+private:
+    QAudioInputPrivate *audioDevice;
+};
+
+#endif
diff --git a/src/multimedia/audio/qaudioinput_mac_p.cpp b/src/multimedia/audio/qaudioinput_mac_p.cpp
new file mode 100644
index 0000000..5400c85
--- /dev/null
+++ b/src/multimedia/audio/qaudioinput_mac_p.cpp
@@ -0,0 +1,930 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qendian.h>
+#include <QtCore/qtimer.h>
+#include <QtCore/qdebug.h>
+
+#include <QtMultimedia/qaudiodeviceinfo.h>
+#include <QtMultimedia/qaudioinput.h>
+
+#include "qaudio_mac_p.h"
+#include "qaudioinput_mac_p.h"
+
+
+QT_BEGIN_NAMESPACE
+
+
+namespace
+{
+
+static const int default_buffer_size = 4 * 1024;
+
+class QAudioBufferList
+{
+public:
+    QAudioBufferList(AudioStreamBasicDescription const& streamFormat):
+        owner(false),
+        sf(streamFormat)
+    {
+        const bool isInterleaved = (sf.mFormatFlags & kAudioFormatFlagIsNonInterleaved) == 0;
+        const int numberOfBuffers = isInterleaved ? 1 : sf.mChannelsPerFrame;
+
+        dataSize = 0;
+
+        bfs = reinterpret_cast<AudioBufferList*>(qMalloc(sizeof(AudioBufferList) +
+                                                                (sizeof(AudioBuffer) * numberOfBuffers)));
+
+        bfs->mNumberBuffers = numberOfBuffers;
+        for (int i = 0; i < numberOfBuffers; ++i) {
+            bfs->mBuffers[i].mNumberChannels = isInterleaved ? numberOfBuffers : 1;
+            bfs->mBuffers[i].mDataByteSize = 0;
+            bfs->mBuffers[i].mData = 0;
+        }
+    }
+
+    QAudioBufferList(AudioStreamBasicDescription const& streamFormat, char* buffer, int bufferSize):
+        owner(false),
+        sf(streamFormat),
+        bfs(0)
+    {
+        dataSize = bufferSize;
+
+        bfs = reinterpret_cast<AudioBufferList*>(qMalloc(sizeof(AudioBufferList) + sizeof(AudioBuffer)));
+
+        bfs->mNumberBuffers = 1;
+        bfs->mBuffers[0].mNumberChannels = 1;
+        bfs->mBuffers[0].mDataByteSize = dataSize;
+        bfs->mBuffers[0].mData = buffer;
+    }
+
+    QAudioBufferList(AudioStreamBasicDescription const& streamFormat, int framesToBuffer):
+        owner(true),
+        sf(streamFormat),
+        bfs(0)
+    {
+        const bool isInterleaved = (sf.mFormatFlags & kAudioFormatFlagIsNonInterleaved) == 0;
+        const int numberOfBuffers = isInterleaved ? 1 : sf.mChannelsPerFrame;
+
+        dataSize = framesToBuffer * sf.mBytesPerFrame;
+
+        bfs = reinterpret_cast<AudioBufferList*>(qMalloc(sizeof(AudioBufferList) +
+                                                                (sizeof(AudioBuffer) * numberOfBuffers)));
+        bfs->mNumberBuffers = numberOfBuffers;
+        for (int i = 0; i < numberOfBuffers; ++i) {
+            bfs->mBuffers[i].mNumberChannels = isInterleaved ? numberOfBuffers : 1;
+            bfs->mBuffers[i].mDataByteSize = dataSize;
+            bfs->mBuffers[i].mData = qMalloc(dataSize);
+        }
+    }
+
+    ~QAudioBufferList()
+    {
+        if (owner) {
+            for (UInt32 i = 0; i < bfs->mNumberBuffers; ++i)
+                qFree(bfs->mBuffers[i].mData);
+        }
+
+        qFree(bfs);
+    }
+
+    AudioBufferList* audioBufferList() const
+    {
+        return bfs;
+    }
+
+    char* data(int buffer = 0) const
+    {
+        return static_cast<char*>(bfs->mBuffers[buffer].mData);
+    }
+
+    qint64 bufferSize(int buffer = 0) const
+    {
+        return bfs->mBuffers[buffer].mDataByteSize;
+    }
+
+    int frameCount(int buffer = 0) const
+    {
+        return bfs->mBuffers[buffer].mDataByteSize / sf.mBytesPerFrame;
+    }
+
+    int packetCount(int buffer = 0) const
+    {
+        return bfs->mBuffers[buffer].mDataByteSize / sf.mBytesPerPacket;
+    }
+
+    int packetSize() const
+    {
+        return sf.mBytesPerPacket;
+    }
+
+    void reset()
+    {
+        for (UInt32 i = 0; i < bfs->mNumberBuffers; ++i)
+            bfs->mBuffers[i].mDataByteSize = dataSize;
+    }
+
+private:
+    bool    owner;
+    int     dataSize;
+    AudioStreamBasicDescription sf;
+    AudioBufferList* bfs;
+};
+
+class QAudioPacketFeeder
+{
+public:
+    QAudioPacketFeeder(QAudioBufferList* abl):
+        audioBufferList(abl)
+    {
+        totalPackets = audioBufferList->packetCount();
+        position = 0;
+    }
+
+    bool feed(AudioBufferList& dst, UInt32& packetCount)
+    {
+        if (position == totalPackets) {
+            dst.mBuffers[0].mDataByteSize = 0;
+            packetCount = 0;
+            return false;
+        }
+
+        if (totalPackets - position < packetCount)
+            packetCount = totalPackets - position;
+
+        dst.mBuffers[0].mDataByteSize = packetCount * audioBufferList->packetSize();
+        dst.mBuffers[0].mData = audioBufferList->data() + (position * audioBufferList->packetSize());
+
+        position += packetCount;
+
+        return true;
+    }
+
+private:
+    UInt32 totalPackets;
+    UInt32 position;
+    QAudioBufferList*   audioBufferList;
+};
+
+class QAudioInputBuffer : public QObject
+{
+    Q_OBJECT
+
+public:
+    QAudioInputBuffer(int bufferSize,
+                        int maxPeriodSize,
+                        AudioStreamBasicDescription const& inputFormat,
+                        AudioStreamBasicDescription const& outputFormat,
+                        QObject* parent):
+        QObject(parent),
+        m_deviceError(false),
+        m_inputFormat(inputFormat),
+        m_outputFormat(outputFormat)
+    {
+        m_maxPeriodSize = maxPeriodSize;
+        m_periodTime = m_maxPeriodSize / m_outputFormat.mBytesPerFrame * 1000 / m_outputFormat.mSampleRate;
+        m_buffer = new QAudioRingBuffer(bufferSize + (bufferSize % maxPeriodSize == 0 ? 0 : maxPeriodSize - (bufferSize % maxPeriodSize)));
+        m_inputBufferList = new QAudioBufferList(m_inputFormat);
+
+        m_flushTimer = new QTimer(this);
+        connect(m_flushTimer, SIGNAL(timeout()), SLOT(flushBuffer()));
+
+        if (inputFormat.mSampleRate != outputFormat.mSampleRate) {
+            if (AudioConverterNew(&m_inputFormat, &m_outputFormat, &m_audioConverter) != noErr) {
+                qWarning() << "QAudioInput: Unable to create an Audio Converter";
+                m_audioConverter = 0;
+            }
+        }
+    }
+
+    ~QAudioInputBuffer()
+    {
+        delete m_buffer;
+    }
+
+    qint64 renderFromDevice(AudioUnit audioUnit,
+                             AudioUnitRenderActionFlags* ioActionFlags,
+                             const AudioTimeStamp* inTimeStamp,
+                             UInt32 inBusNumber,
+                             UInt32 inNumberFrames)
+    {
+        const bool  wasEmpty = m_buffer->used() == 0;
+
+        OSStatus    err;
+        qint64      framesRendered = 0;
+
+        m_inputBufferList->reset();
+        err = AudioUnitRender(audioUnit,
+                                ioActionFlags,
+                                inTimeStamp,
+                                inBusNumber,
+                                inNumberFrames,
+                                m_inputBufferList->audioBufferList());
+
+        if (m_audioConverter != 0) {
+            QAudioPacketFeeder  feeder(m_inputBufferList);
+
+            bool    wecan = true;
+            int     copied = 0;
+
+            const int available = m_buffer->free();
+
+            while (err == noErr && wecan) {
+                QAudioRingBuffer::Region region = m_buffer->acquireWriteRegion(available);
+
+                if (region.second > 0) {
+                    AudioBufferList     output;
+                    output.mNumberBuffers = 1;
+                    output.mBuffers[0].mNumberChannels = 1;
+                    output.mBuffers[0].mDataByteSize = region.second;
+                    output.mBuffers[0].mData = region.first;
+
+                    UInt32  packetSize = region.second / m_outputFormat.mBytesPerPacket;
+                    err = AudioConverterFillComplexBuffer(m_audioConverter,
+                                                          converterCallback,
+                                                          &feeder,
+                                                          &packetSize,
+                                                          &output,
+                                                          0);
+
+                    region.second = output.mBuffers[0].mDataByteSize;
+                    copied += region.second;
+
+                    m_buffer->releaseWriteRegion(region);
+                }
+                else
+                    wecan = false;
+            }
+
+            framesRendered += copied / m_outputFormat.mBytesPerFrame;
+        }
+        else {
+            const int available = m_inputBufferList->bufferSize();
+            bool    wecan = true;
+            int     copied = 0;
+
+            while (wecan && copied < available) {
+                QAudioRingBuffer::Region region = m_buffer->acquireWriteRegion(available - copied);
+
+                if (region.second > 0) {
+                    memcpy(region.first, m_inputBufferList->data() + copied, region.second);
+                    copied += region.second;
+                }
+                else
+                    wecan = false;
+
+                m_buffer->releaseWriteRegion(region);
+            }
+
+            framesRendered = copied / m_outputFormat.mBytesPerFrame;
+        }
+
+        if (wasEmpty && framesRendered > 0)
+            emit readyRead();
+
+        return framesRendered;
+    }
+
+    qint64 readBytes(char* data, qint64 len)
+    {
+        bool    wecan = true;
+        qint64  bytesCopied = 0;
+
+        len -= len % m_maxPeriodSize;
+        while (wecan && bytesCopied < len) {
+            QAudioRingBuffer::Region region = m_buffer->acquireReadRegion(len - bytesCopied);
+
+            if (region.second > 0) {
+                memcpy(data + bytesCopied, region.first, region.second);
+                bytesCopied += region.second;
+            }
+            else
+                wecan = false;
+
+            m_buffer->releaseReadRegion(region);
+        }
+
+        return bytesCopied;
+    }
+
+    void setFlushDevice(QIODevice* device)
+    {
+        if (m_device != device)
+            m_device = device;
+    }
+
+    void startFlushTimer()
+    {
+        if (m_device != 0) {
+            m_flushTimer->start((m_buffer->size() - (m_maxPeriodSize * 2)) / m_maxPeriodSize * m_periodTime);
+        }
+    }
+
+    void stopFlushTimer()
+    {
+        m_flushTimer->stop();
+    }
+
+    void flush(bool all = false)
+    {
+        const int used = m_buffer->used();
+        const int readSize = all ? used : used - (used % m_maxPeriodSize);
+
+        if (readSize > 0) {
+            bool    wecan = true;
+            int     flushed = 0;
+
+            while (!m_deviceError && wecan && flushed < readSize) {
+                QAudioRingBuffer::Region region = m_buffer->acquireReadRegion(readSize - flushed);
+
+                if (region.second > 0) {
+                    int bytesWritten = m_device->write(region.first, region.second);
+                    if (bytesWritten < 0) {
+                        stopFlushTimer();
+                        m_deviceError = true;
+                    }
+                    else {
+                        region.second = bytesWritten;
+                        flushed += bytesWritten;
+                        wecan = bytesWritten != 0;
+                    }
+                }
+                else
+                    wecan = false;
+
+                m_buffer->releaseReadRegion(region);
+            }
+        }
+    }
+
+    void reset()
+    {
+        m_buffer->reset();
+        m_deviceError = false;
+    }
+
+    int available() const
+    {
+        return m_buffer->free();
+    }
+
+    int used() const
+    {
+        return m_buffer->used();
+    }
+
+signals:
+    void readyRead();
+
+private slots:
+    void flushBuffer()
+    {
+        flush();
+    }
+
+private:
+    bool        m_deviceError;
+    int         m_maxPeriodSize;
+    int         m_periodTime;
+    QIODevice*  m_device;
+    QTimer*     m_flushTimer;
+    QAudioRingBuffer*   m_buffer;
+    QAudioBufferList*   m_inputBufferList;
+    AudioConverterRef   m_audioConverter;
+    AudioStreamBasicDescription m_inputFormat;
+    AudioStreamBasicDescription m_outputFormat;
+
+    const static OSStatus as_empty = 'qtem';
+
+    // Converter callback
+    static OSStatus converterCallback(AudioConverterRef inAudioConverter,
+                                UInt32* ioNumberDataPackets,
+                                AudioBufferList* ioData,
+                                AudioStreamPacketDescription** outDataPacketDescription,
+                                void* inUserData)
+    {
+        Q_UNUSED(inAudioConverter);
+        Q_UNUSED(outDataPacketDescription);
+
+        QAudioPacketFeeder* feeder = static_cast<QAudioPacketFeeder*>(inUserData);
+
+        if (!feeder->feed(*ioData, *ioNumberDataPackets))
+            return as_empty;
+
+        return noErr;
+    }
+};
+
+
+class MacInputDevice : public QIODevice
+{
+    Q_OBJECT
+
+public:
+    MacInputDevice(QAudioInputBuffer* audioBuffer, QObject* parent):
+        QIODevice(parent),
+        m_audioBuffer(audioBuffer)
+    {
+        open(QIODevice::ReadOnly | QIODevice::Unbuffered);
+        connect(m_audioBuffer, SIGNAL(readyRead()), SIGNAL(readyRead()));
+    }
+
+    qint64 readData(char* data, qint64 len)
+    {
+        return m_audioBuffer->readBytes(data, len);
+    }
+
+    qint64 writeData(const char* data, qint64 len)
+    {
+        Q_UNUSED(data);
+        Q_UNUSED(len);
+
+        return 0;
+    }
+
+    bool isSequential() const
+    {
+        return true;
+    }
+
+private:
+    QAudioInputBuffer*   m_audioBuffer;
+};
+
+}
+
+
+QAudioInputPrivate::QAudioInputPrivate(const QByteArray& device, QAudioFormat const& format):
+    audioFormat(format)
+{
+    QDataStream ds(device);
+    quint32 did, mode;
+
+    ds >> did >> mode;
+
+    if (QAudio::Mode(mode) == QAudio::AudioOutput)
+        errorCode = QAudio::OpenError;
+    else {
+        isOpen = false;
+        audioDeviceId = AudioDeviceID(did);
+        audioUnit = 0;
+        startTime = 0;
+        totalFrames = 0;
+        audioBuffer = 0;
+        internalBufferSize = default_buffer_size;
+        clockFrequency = AudioGetHostClockFrequency() / 1000;
+        errorCode = QAudio::NoError;
+        stateCode = QAudio::StopState;
+
+        intervalTimer = new QTimer(this);
+        intervalTimer->setInterval(1000);
+        connect(intervalTimer, SIGNAL(timeout()), SIGNAL(notify()));
+    }
+}
+
+QAudioInputPrivate::~QAudioInputPrivate()
+{
+    close();
+}
+
+bool QAudioInputPrivate::open()
+{
+    UInt32  size = 0;
+
+    if (isOpen)
+        return true;
+
+    ComponentDescription    cd;
+    cd.componentType = kAudioUnitType_Output;
+    cd.componentSubType = kAudioUnitSubType_HALOutput;
+    cd.componentManufacturer = kAudioUnitManufacturer_Apple;
+    cd.componentFlags = 0;
+    cd.componentFlagsMask = 0;
+
+    // Open
+    Component cp = FindNextComponent(NULL, &cd);
+    if (cp == 0) {
+        qWarning() << "QAudioInput: Failed to find HAL Output component";
+        return false;
+    }
+
+    if (OpenAComponent(cp, &audioUnit) != noErr) {
+        qWarning() << "QAudioInput: Unable to Open Output Component";
+        return false;
+    }
+
+    // Set mode
+    // switch to input mode
+    UInt32 enable = 1;
+    if (AudioUnitSetProperty(audioUnit,
+                               kAudioOutputUnitProperty_EnableIO,
+                               kAudioUnitScope_Input,
+                               1,
+                               &enable,
+                               sizeof(enable)) != noErr) {
+        qWarning() << "QAudioInput: Unabled to switch to input mode (Enable Input)";
+        return false;
+    }
+
+    enable = 0;
+    if (AudioUnitSetProperty(audioUnit,
+                            kAudioOutputUnitProperty_EnableIO,
+                            kAudioUnitScope_Output,
+                            0,
+                            &enable,
+                            sizeof(enable)) != noErr) {
+        qWarning() << "QAudioInput: Unabled to switch to input mode (Disable output)";
+        return false;
+    }
+
+    // register callback
+    AURenderCallbackStruct cb;
+    cb.inputProc = inputCallback;
+    cb.inputProcRefCon = this;
+
+    if (AudioUnitSetProperty(audioUnit,
+                               kAudioOutputUnitProperty_SetInputCallback,
+                               kAudioUnitScope_Global,
+                               0,
+                               &cb,
+                               sizeof(cb)) != noErr) {
+        qWarning() << "QAudioInput: Failed to set AudioUnit callback";
+        return false;
+    }
+
+    // Set Audio Device
+    if (AudioUnitSetProperty(audioUnit,
+                                kAudioOutputUnitProperty_CurrentDevice,
+                                kAudioUnitScope_Global,
+                                0,
+                                &audioDeviceId,
+                                sizeof(audioDeviceId)) != noErr) {
+        qWarning() << "QAudioInput: Unable to use configured device";
+        return false;
+    }
+
+    // Set format
+    streamFormat = toAudioStreamBasicDescription(audioFormat);
+
+    size = sizeof(deviceFormat);
+    if (AudioUnitGetProperty(audioUnit,
+                                kAudioUnitProperty_StreamFormat,
+                                kAudioUnitScope_Input,
+                                1,
+                                &deviceFormat,
+                                &size) != noErr) {
+        qWarning() << "QAudioInput: Unable to retrieve device format";
+        return false;
+    }
+
+    // If the device frequency is different to the requested use a converter
+    if (deviceFormat.mSampleRate != streamFormat.mSampleRate) {
+         AudioUnitSetProperty(audioUnit,
+                               kAudioUnitProperty_StreamFormat,
+                               kAudioUnitScope_Output,
+                               1,
+                               &deviceFormat,
+                               sizeof(streamFormat));
+    }
+    else {
+        AudioUnitSetProperty(audioUnit,
+                               kAudioUnitProperty_StreamFormat,
+                               kAudioUnitScope_Output,
+                               1,
+                               &streamFormat,
+                               sizeof(streamFormat));
+    }
+
+    // Setup buffers
+    UInt32 numberOfFrames;
+    size = sizeof(UInt32);
+    if (AudioUnitGetProperty(audioUnit,
+                                kAudioDevicePropertyBufferFrameSize,
+                                kAudioUnitScope_Global,
+                                0,
+                                &numberOfFrames,
+                                &size) != noErr) {
+        qWarning() << "QAudioInput: Failed to get audio period size";
+        return false;
+    }
+
+    // Allocate buffer
+    periodSizeBytes = (numberOfFrames * streamFormat.mSampleRate / deviceFormat.mSampleRate) *
+                        streamFormat.mBytesPerFrame;
+    if (internalBufferSize < periodSizeBytes * 2)
+        internalBufferSize = periodSizeBytes * 2;
+    else
+        internalBufferSize -= internalBufferSize % streamFormat.mBytesPerFrame;
+
+    audioBuffer = new QAudioInputBuffer(internalBufferSize,
+                                        periodSizeBytes,
+                                        deviceFormat,
+                                        streamFormat,
+                                        this);
+
+    audioIO = new MacInputDevice(audioBuffer, this);
+
+    // Init
+    if (AudioUnitInitialize(audioUnit) != noErr) {
+        qWarning() << "QAudioInput: Failed to initialize AudioUnit";
+        return false;
+    }
+
+    isOpen = true;
+
+    return isOpen;
+}
+
+void QAudioInputPrivate::close()
+{
+    if (audioUnit != 0) {
+        AudioOutputUnitStop(audioUnit);
+        AudioUnitUninitialize(audioUnit);
+        CloseComponent(audioUnit);
+    }
+
+    delete audioBuffer;
+}
+
+QAudioFormat QAudioInputPrivate::format() const
+{
+    return audioFormat;
+}
+
+QIODevice* QAudioInputPrivate::start(QIODevice* device)
+{
+    QIODevice*  op = device;
+
+    if (!open()) {
+        stateCode = QAudio::StopState;
+        errorCode = QAudio::OpenError;
+        return audioIO;
+    }
+
+    reset();
+    audioBuffer->reset();
+    audioBuffer->setFlushDevice(op);
+
+    if (op == 0)
+        op = audioIO;
+
+    // Start
+    startTime = AudioGetCurrentHostTime();
+    totalFrames = 0;
+
+    audioThreadStart();
+
+    return op;
+}
+
+void QAudioInputPrivate::stop()
+{
+    QMutexLocker    lock(&mutex);
+    if (stateCode != QAudio::StopState) {
+        audioThreadStop();
+        audioBuffer->flush(true);
+
+        errorCode = QAudio::NoError;
+        stateCode = QAudio::StopState;
+        QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
+    }
+}
+
+void QAudioInputPrivate::reset()
+{
+    QMutexLocker    lock(&mutex);
+    if (stateCode != QAudio::StopState) {
+        audioThreadStop();
+
+        errorCode = QAudio::NoError;
+        stateCode = QAudio::StopState;
+        QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
+    }
+}
+
+void QAudioInputPrivate::suspend()
+{
+    QMutexLocker    lock(&mutex);
+    if (stateCode == QAudio::ActiveState || stateCode == QAudio::IdleState) {
+        audioThreadStop();
+
+        errorCode = QAudio::NoError;
+        stateCode = QAudio::SuspendState;
+        QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
+    }
+}
+
+void QAudioInputPrivate::resume()
+{
+    QMutexLocker    lock(&mutex);
+    if (stateCode == QAudio::SuspendState) {
+        audioThreadStart();
+
+        errorCode = QAudio::NoError;
+        stateCode = QAudio::ActiveState;
+        QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
+    }
+}
+
+int QAudioInputPrivate::bytesReady() const
+{
+    return audioBuffer->used();
+}
+
+int QAudioInputPrivate::periodSize() const
+{
+    return periodSizeBytes;
+}
+
+void QAudioInputPrivate::setBufferSize(int bs)
+{
+    internalBufferSize = bs;
+}
+
+int QAudioInputPrivate::bufferSize() const
+{
+    return internalBufferSize;
+}
+
+void QAudioInputPrivate::setNotifyInterval(int milliSeconds)
+{
+    intervalTimer->setInterval(milliSeconds);
+}
+
+int QAudioInputPrivate::notifyInterval() const
+{
+    return intervalTimer->interval();
+}
+
+qint64 QAudioInputPrivate::totalTime() const
+{
+    return totalFrames * 1000000 / audioFormat.frequency();
+}
+
+qint64 QAudioInputPrivate::clock() const
+{
+    return (AudioGetCurrentHostTime() - startTime) / (clockFrequency / 1000);
+}
+
+QAudio::Error QAudioInputPrivate::error() const
+{
+    return errorCode;
+}
+
+QAudio::State QAudioInputPrivate::state() const
+{
+    return stateCode;
+}
+
+void QAudioInputPrivate::audioThreadStop()
+{
+    stopTimers();
+    if (audioThreadState.testAndSetAcquire(Running, Stopped))
+        threadFinished.wait(&mutex);
+}
+
+void QAudioInputPrivate::audioThreadStart()
+{
+    startTimers();
+    audioThreadState = Running;
+    AudioOutputUnitStart(audioUnit);
+}
+
+void QAudioInputPrivate::audioDeviceStop()
+{
+    AudioOutputUnitStop(audioUnit);
+    audioThreadState = Stopped;
+    threadFinished.wakeOne();
+}
+
+void QAudioInputPrivate::audioDeviceFull()
+{
+    QMutexLocker    lock(&mutex);
+    if (stateCode == QAudio::ActiveState) {
+        audioDeviceStop();
+
+        errorCode = QAudio::UnderrunError;
+        stateCode = QAudio::IdleState;
+        QMetaObject::invokeMethod(this, "deviceStopped", Qt::QueuedConnection);
+    }
+}
+
+void QAudioInputPrivate::audioDeviceError()
+{
+    QMutexLocker    lock(&mutex);
+    if (stateCode == QAudio::ActiveState) {
+        audioDeviceStop();
+
+        errorCode = QAudio::IOError;
+        stateCode = QAudio::StopState;
+        QMetaObject::invokeMethod(this, "deviceStopped", Qt::QueuedConnection);
+    }
+}
+
+void QAudioInputPrivate::startTimers()
+{
+    audioBuffer->startFlushTimer();
+    intervalTimer->start();
+}
+
+void QAudioInputPrivate::stopTimers()
+{
+    audioBuffer->stopFlushTimer();
+    intervalTimer->stop();
+}
+
+void QAudioInputPrivate::deviceStopped()
+{
+    stopTimers();
+    emit stateChanged(stateCode);
+}
+
+// Input callback
+OSStatus QAudioInputPrivate::inputCallback(void* inRefCon,
+                                AudioUnitRenderActionFlags* ioActionFlags,
+                                const AudioTimeStamp* inTimeStamp,
+                                UInt32 inBusNumber,
+                                UInt32 inNumberFrames,
+                                AudioBufferList* ioData)
+{
+    Q_UNUSED(ioData);
+
+    QAudioInputPrivate* d = static_cast<QAudioInputPrivate*>(inRefCon);
+
+    const int threadState = d->audioThreadState.fetchAndAddAcquire(0);
+    if (threadState == Stopped)
+        d->audioDeviceStop();
+    else {
+        qint64      framesWritten;
+
+        framesWritten = d->audioBuffer->renderFromDevice(d->audioUnit,
+                                                         ioActionFlags,
+                                                         inTimeStamp,
+                                                         inBusNumber,
+                                                         inNumberFrames);
+
+        if (framesWritten > 0)
+            d->totalFrames += framesWritten;
+        else if (framesWritten == 0)
+            d->audioDeviceFull();
+        else if (framesWritten < 0)
+            d->audioDeviceError();
+    }
+
+    return noErr;
+}
+
+
+QT_END_NAMESPACE
+
+#include "qaudioinput_mac_p.moc"
+
diff --git a/src/multimedia/audio/qaudioinput_mac_p.h b/src/multimedia/audio/qaudioinput_mac_p.h
new file mode 100644
index 0000000..98ef9ce
--- /dev/null
+++ b/src/multimedia/audio/qaudioinput_mac_p.h
@@ -0,0 +1,171 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+
+#ifndef QAUDIOINPUT_MAC_P_H
+#define QAUDIOINPUT_MAC_P_H
+
+#include <CoreServices/CoreServices.h>
+#include <CoreAudio/CoreAudio.h>
+#include <AudioUnit/AudioUnit.h>
+#include <AudioToolbox/AudioToolbox.h>
+
+#include <QtCore/qobject.h>
+#include <QtCore/qmutex.h>
+#include <QtCore/qwaitcondition.h>
+#include <QtCore/qatomic.h>
+
+#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qaudioformat.h>
+#include <QtMultimedia/qaudioengine.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QTimer;
+class QIODevice;
+
+namespace
+{
+class QAudioInputBuffer;
+}
+
+class QAudioInputPrivate : public QAbstractAudioInput
+{
+    Q_OBJECT
+
+public:
+    bool            isOpen;
+    int             periodSizeBytes;
+    int             internalBufferSize;
+    qint64          totalFrames;
+    QAudioFormat    audioFormat;
+    QIODevice*      audioIO;
+    AudioUnit       audioUnit;
+    AudioDeviceID   audioDeviceId;
+    Float64         clockFrequency;
+    UInt64          startTime;
+    QAudio::Error   errorCode;
+    QAudio::State   stateCode;
+    QAudioInputBuffer*   audioBuffer;
+    QMutex          mutex;
+    QWaitCondition  threadFinished;
+    QAtomicInt      audioThreadState;
+    QTimer*         intervalTimer;
+    AudioStreamBasicDescription streamFormat;
+    AudioStreamBasicDescription deviceFormat;
+
+    QAudioInputPrivate(const QByteArray& device, QAudioFormat const& format);
+    ~QAudioInputPrivate();
+
+    bool open();
+    void close();
+
+    QAudioFormat format() const;
+
+    QIODevice* start(QIODevice* device);
+    void stop();
+    void reset();
+    void suspend();
+    void resume();
+    void idle();
+
+    int bytesReady() const;
+    int periodSize() const;
+
+    void setBufferSize(int value);
+    int bufferSize() const;
+
+    void setNotifyInterval(int milliSeconds);
+    int notifyInterval() const;
+
+    qint64 totalTime() const;
+    qint64 clock() const;
+
+    QAudio::Error error() const;
+    QAudio::State state() const;
+
+    void audioThreadStart();
+    void audioThreadStop();
+
+    void audioDeviceStop();
+    void audioDeviceFull();
+    void audioDeviceError();
+
+    void startTimers();
+    void stopTimers();
+
+signals:
+    void stateChanged(QAudio::State);
+    void notify();
+
+private slots:
+    void deviceStopped();
+
+private:
+    enum { Running, Stopped };
+
+    // Input callback
+    static OSStatus inputCallback(void* inRefCon,
+                                    AudioUnitRenderActionFlags* ioActionFlags,
+                                    const AudioTimeStamp* inTimeStamp,
+                                    UInt32 inBusNumber,
+                                    UInt32 inNumberFrames,
+                                    AudioBufferList* ioData);
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QAUDIOINPUT_MAC_P_H
diff --git a/src/multimedia/audio/qaudioinput_win32_p.cpp b/src/multimedia/audio/qaudioinput_win32_p.cpp
new file mode 100644
index 0000000..e5b6e0d
--- /dev/null
+++ b/src/multimedia/audio/qaudioinput_win32_p.cpp
@@ -0,0 +1,540 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+
+#include "qaudioinput_win32_p.h"
+
+//#define DEBUG_AUDIO 1
+
+
+QAudioInputPrivate::QAudioInputPrivate(const QByteArray &device, const QAudioFormat& audioFormat):
+    settings(audioFormat)
+{
+    bytesAvailable = 0;
+    buffer_size = 0;
+    period_size = 0;
+    m_device = device;
+    totalTimeValue = 0;
+    intervalTime = 1000;
+    errorState = QAudio::NoError;
+    deviceState = QAudio::StopState;
+    audioSource = 0;
+    pullMode = true;
+    resuming = false;
+
+    connect(this,SIGNAL(processMore()),SLOT(deviceReady()));
+
+    InitializeCriticalSection(&waveInCriticalSection);
+}
+
+QAudioInputPrivate::~QAudioInputPrivate()
+{
+    close();
+    DeleteCriticalSection(&waveInCriticalSection);
+}
+
+void CALLBACK QAudioInputPrivate::waveInProc( HWAVEIN hWaveIn, UINT uMsg,
+        DWORD dwInstance, DWORD dwParam1, DWORD dwParam2 )
+{
+    Q_UNUSED(dwParam1)
+    Q_UNUSED(dwParam2)
+    Q_UNUSED(hWaveIn)
+
+    QAudioInputPrivate* qAudio;
+    qAudio = (QAudioInputPrivate*)(dwInstance);
+    if(!qAudio)
+        return;
+
+    switch(uMsg) {
+        case WIM_OPEN:
+            break;
+        case WIM_DATA:
+            EnterCriticalSection(&waveInCriticalSection);
+            if(qAudio->waveFreeBlockCount > 0)
+                qAudio->waveFreeBlockCount--;
+            LeaveCriticalSection(&waveInCriticalSection);
+            qAudio->feedback();
+            break;
+        case WIM_CLOSE:
+            break;
+        default:
+            return;
+    }
+}
+
+WAVEHDR* QAudioInputPrivate::allocateBlocks(int size, int count)
+{
+    int i;
+    unsigned char* buffer;
+    WAVEHDR* blocks;
+    DWORD totalBufferSize = (size + sizeof(WAVEHDR))*count;
+
+    if((buffer=(unsigned char*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,
+                    totalBufferSize)) == 0) {
+        qWarning("QAudioInput: Memory allocation error");
+        return 0;
+    }
+    blocks = (WAVEHDR*)buffer;
+    buffer += sizeof(WAVEHDR)*count;
+    for(i = 0; i < count; i++) {
+        blocks[i].dwBufferLength = size;
+        blocks[i].lpData = (LPSTR)buffer;
+        blocks[i].dwBytesRecorded=0;
+        blocks[i].dwUser = 0L;
+        blocks[i].dwFlags = 0L;
+        blocks[i].dwLoops = 0L;
+        result = waveInPrepareHeader(hWaveIn,&blocks[i], sizeof(WAVEHDR));
+        if(result != MMSYSERR_NOERROR) {
+            qWarning("QAudioInput: Can't prepare block %d",i);
+            return 0;
+        }
+        buffer += size;
+    }
+    return blocks;
+}
+
+void QAudioInputPrivate::freeBlocks(WAVEHDR* blockArray)
+{
+    HeapFree(GetProcessHeap(), 0, blockArray);
+}
+
+QAudio::Error QAudioInputPrivate::error() const
+{
+    return errorState;
+}
+
+QAudio::State QAudioInputPrivate::state() const
+{
+    return deviceState;
+}
+
+QAudioFormat QAudioInputPrivate::format() const
+{
+    return settings;
+}
+
+QIODevice* QAudioInputPrivate::start(QIODevice* device)
+{
+    if(deviceState != QAudio::StopState)
+        close();
+
+    if(!pullMode && audioSource) {
+        delete audioSource;
+    }
+
+    if(device) {
+        //set to pull mode
+        pullMode = true;
+        audioSource = device;
+    } else {
+        //set to push mode
+        pullMode = false;
+        audioSource = new InputPrivate(this);
+        audioSource->open(QIODevice::ReadOnly | QIODevice::Unbuffered);
+    }
+
+    if( !open() )
+        return 0;
+
+    emit stateChanged(deviceState);
+
+    return audioSource;
+}
+
+void QAudioInputPrivate::stop()
+{
+    if(deviceState == QAudio::StopState)
+        return;
+
+    deviceState = QAudio::StopState;
+
+    close();
+    emit stateChanged(deviceState);
+}
+
+bool QAudioInputPrivate::open()
+{
+#ifdef DEBUG_AUDIO
+    QTime now(QTime::currentTime());
+    qDebug()<<now.second()<<"s "<<now.msec()<<"ms :open()";
+#endif
+    header = 0;
+    if(buffer_size == 0) {
+        // Default buffer size, 100ms, default period size is 20ms
+        buffer_size = settings.frequency()*settings.channels()*(settings.sampleSize()/8)*0.1;
+	period_size = buffer_size/5;
+    } else {
+        period_size = buffer_size/5;
+    }
+    timeStamp.restart();
+    wfx.nSamplesPerSec = settings.frequency();
+    wfx.wBitsPerSample = settings.sampleSize();
+    wfx.nChannels = settings.channels();
+    wfx.cbSize = 0;
+
+    wfx.wFormatTag = WAVE_FORMAT_PCM;
+    wfx.nBlockAlign = (wfx.wBitsPerSample >> 3) * wfx.nChannels;
+    wfx.nAvgBytesPerSec = wfx.nBlockAlign * wfx.nSamplesPerSec;
+
+    UINT_PTR devId = WAVE_MAPPER;
+
+    WAVEINCAPS wic;
+    unsigned long iNumDevs,ii;
+    iNumDevs = waveInGetNumDevs();
+    for(ii=0;ii<iNumDevs;ii++) {
+        if(waveInGetDevCaps(ii, &wic, sizeof(WAVEINCAPS))
+	    == MMSYSERR_NOERROR) {
+	    QString tmp;
+	    tmp = QString::fromUtf16((const unsigned short*)wic.szPname);
+	    if(tmp.compare(tr(m_device)) == 0) {
+	        devId = ii;
+		break;
+	    }
+	}
+    }
+
+    if(waveInOpen(&hWaveIn, devId, &wfx,
+                (DWORD_PTR)&waveInProc,
+                (DWORD_PTR) this,
+                CALLBACK_FUNCTION) != MMSYSERR_NOERROR) {
+        errorState = QAudio::OpenError;
+        deviceState = QAudio::StopState;
+        emit stateChanged(deviceState);
+        qWarning("QAudioInput: failed to open audio device");
+        return false;
+    }
+    waveBlocks = allocateBlocks(period_size, buffer_size/period_size);
+    waveFreeBlockCount = buffer_size/period_size;
+    waveCurrentBlock = 0;
+
+    for(int i=0; i<buffer_size/period_size; i++) {
+        result = waveInAddBuffer(hWaveIn, &waveBlocks[i], sizeof(WAVEHDR));
+        if(result != MMSYSERR_NOERROR) {
+            qWarning("QAudioInput: failed to setup block %d,err=%d",i,result);
+            errorState = QAudio::OpenError;
+            deviceState = QAudio::StopState;
+            emit stateChanged(deviceState);
+            return false;
+        }
+    }
+    result = waveInStart(hWaveIn);
+    if(result) {
+        qWarning("QAudioInput: failed to start audio input");
+        errorState = QAudio::OpenError;
+        deviceState = QAudio::StopState;
+        emit stateChanged(deviceState);
+        return false;
+    }
+    timeStampOpened.restart();
+    totalTimeValue = 0;
+    errorState  = QAudio::NoError;
+    deviceState = QAudio::ActiveState;
+    return true;
+}
+
+void QAudioInputPrivate::close()
+{
+    deviceState = QAudio::StopState;
+    int delay = (buffer_size-bytesReady())*1000/(settings.frequency()
+                  *settings.channels()*(settings.sampleSize()/8));
+    waveInReset(hWaveIn);
+    Sleep(delay+10);
+
+    for(int i=0; i<waveFreeBlockCount; i++) {
+        if(waveBlocks[i].dwFlags & WHDR_PREPARED)
+            waveInUnprepareHeader(hWaveIn,&waveBlocks[i],sizeof(WAVEHDR));
+    }
+    freeBlocks(waveBlocks);
+    waveInClose(hWaveIn);
+}
+
+int QAudioInputPrivate::bytesReady() const
+{
+    int buf = ((buffer_size/period_size)-waveFreeBlockCount)*period_size;
+    if(buf < 0)
+        buf = 0;
+    return buf;
+}
+
+qint64 QAudioInputPrivate::read(char* data, qint64 len)
+{
+    bool done = false;
+
+    char*  p = data;
+    qint64 l = 0;
+    qint64 written = 0;
+    while(!done) {
+        // Read in some audio data
+        if(waveBlocks[header].dwBytesRecorded > 0) {
+            if(pullMode) {
+                l = audioSource->write(waveBlocks[header].lpData,
+                        waveBlocks[header].dwBytesRecorded);
+#ifdef DEBUG_AUDIO
+                qDebug()<<"IN: "<<waveBlocks[header].dwBytesRecorded<<", OUT: "<<l;
+#endif
+                if(l < 0) {
+                    // error
+                    qWarning("QAudioInput: IOError");
+                    errorState = QAudio::IOError;
+
+                } else if(l == 0) {
+                    // cant write to IODevice
+                    qWarning("QAudioInput: IOError, can't write to QIODevice");
+                    errorState = QAudio::IOError;
+
+                } else {
+                    totalTimeValue += waveBlocks[header].dwBytesRecorded
+                        /((settings.channels()*settings.sampleSize()/8))
+                        *10000/settings.frequency()*100;
+                    errorState = QAudio::NoError;
+                    deviceState = QAudio::ActiveState;
+		    resuming = false;
+                }
+            } else {
+                // push mode
+                memcpy(p,waveBlocks[header].lpData,waveBlocks[header].dwBytesRecorded);
+                l = waveBlocks[header].dwBytesRecorded;
+#ifdef DEBUG_AUDIO
+                qDebug()<<"IN: "<<waveBlocks[header].dwBytesRecorded<<", OUT: "<<l;
+#endif
+                totalTimeValue += waveBlocks[header].dwBytesRecorded
+                    /((settings.channels()*settings.sampleSize()/8))
+                    *10000/settings.frequency()*100;
+                errorState = QAudio::NoError;
+                deviceState = QAudio::ActiveState;
+		resuming = false;
+            }
+        } else {
+            //no data, not ready yet, next time
+            return 0;
+        }
+        EnterCriticalSection(&waveInCriticalSection);
+        waveFreeBlockCount++;
+        LeaveCriticalSection(&waveInCriticalSection);
+        waveBlocks[header].dwBytesRecorded=0;
+        waveBlocks[header].dwFlags = 0L;
+        result = waveInPrepareHeader(hWaveIn,&waveBlocks[header], sizeof(WAVEHDR));
+        if(result != MMSYSERR_NOERROR) {
+            qWarning("QAudioInput: failed to prepare block %d,err=%d",header,result);
+            errorState = QAudio::OpenError;
+            deviceState = QAudio::StopState;
+            emit stateChanged(deviceState);
+        }
+        result = waveInAddBuffer(hWaveIn, &waveBlocks[header], sizeof(WAVEHDR));
+        if(result != MMSYSERR_NOERROR) {
+            qWarning("QAudioInput: failed to setup block %d,err=%d",header,result);
+            errorState = QAudio::OpenError;
+            deviceState = QAudio::StopState;
+            emit stateChanged(deviceState);
+        }
+        header++;
+        if(header >= buffer_size/period_size)
+            header = 0;
+        p+=l;
+
+        if(!pullMode) {
+	    if(l+period_size > len && waveFreeBlockCount == buffer_size/period_size)
+	        done = true;
+	} else {
+	    if(waveFreeBlockCount == buffer_size/period_size)
+	        done = true;
+	}
+	written+=l;
+    }
+#ifdef DEBUG_AUDIO
+    qDebug()<<"read in len="<<written;
+#endif
+    return written;
+}
+
+void QAudioInputPrivate::resume()
+{
+    if(deviceState == QAudio::SuspendState) {
+        deviceState = QAudio::ActiveState;
+        for(int i=0; i<buffer_size/period_size; i++) {
+            result = waveInAddBuffer(hWaveIn, &waveBlocks[i], sizeof(WAVEHDR));
+            if(result != MMSYSERR_NOERROR) {
+                qWarning("QAudioInput: failed to setup block %d,err=%d",i,result);
+                errorState = QAudio::OpenError;
+                deviceState = QAudio::StopState;
+                emit stateChanged(deviceState);
+                return;
+            }
+        }
+        waveFreeBlockCount = buffer_size/period_size;
+        waveCurrentBlock = 0;
+        header = 0;
+	resuming = true;
+        waveInStart(hWaveIn);
+        QTimer::singleShot(20,this,SLOT(feedback()));
+        emit stateChanged(deviceState);
+    }
+}
+
+void QAudioInputPrivate::setBufferSize(int value)
+{
+    buffer_size = value;
+}
+
+int QAudioInputPrivate::bufferSize() const
+{
+    return buffer_size;
+}
+
+int QAudioInputPrivate::periodSize() const
+{
+    return period_size;
+}
+
+void QAudioInputPrivate::setNotifyInterval(int ms)
+{
+    intervalTime = ms;
+}
+
+int QAudioInputPrivate::notifyInterval() const
+{
+    return intervalTime;
+}
+
+qint64 QAudioInputPrivate::totalTime() const
+{
+    return totalTimeValue;
+}
+
+void QAudioInputPrivate::suspend()
+{
+    if(deviceState == QAudio::ActiveState) {
+        waveInReset(hWaveIn);
+        deviceState = QAudio::SuspendState;
+        emit stateChanged(deviceState);
+    }
+}
+
+void QAudioInputPrivate::feedback()
+{
+#ifdef DEBUG_AUDIO
+    QTime now(QTime::currentTime());
+    qDebug()<<now.second()<<"s "<<now.msec()<<"ms :feedback() INPUT";
+#endif
+    bytesAvailable = bytesReady();
+
+    if(!(deviceState==QAudio::StopState||deviceState==QAudio::SuspendState))
+        emit processMore();
+}
+
+bool QAudioInputPrivate::deviceReady()
+{
+#ifdef DEBUG_AUDIO
+    QTime now(QTime::currentTime());
+    qDebug()<<now.second()<<"s "<<now.msec()<<"ms :deviceReady() INPUT";
+#endif
+    if(pullMode) {
+        // reads some audio data and writes it to QIODevice
+        read(0,0);
+    } else {
+        // emits readyRead() so user will call read() on QIODevice to get some audio data
+	InputPrivate* a = qobject_cast<InputPrivate*>(audioSource);
+	a->trigger();
+    }
+    if(deviceState != QAudio::ActiveState)
+        return true;
+
+    if(timeStamp.elapsed() > intervalTime && intervalTime > 50) {
+        emit notify();
+        timeStamp.restart();
+    }
+    return true;
+}
+
+qint64 QAudioInputPrivate::clock() const
+{
+    if(deviceState != QAudio::ActiveState)
+        return 0;
+
+    return timeStampOpened.elapsed();
+}
+
+void QAudioInputPrivate::reset()
+{
+    close();
+}
+
+InputPrivate::InputPrivate(QAudioInputPrivate* audio)
+{
+    audioDevice = qobject_cast<QAudioInputPrivate*>(audio);
+}
+
+InputPrivate::~InputPrivate() {}
+
+qint64 InputPrivate::readData( char* data, qint64 len)
+{
+    // push mode, user read() called
+    if(audioDevice->deviceState != QAudio::ActiveState)
+        return 0;
+    // Read in some audio data
+    return audioDevice->read(data,len);
+}
+
+qint64 InputPrivate::writeData(const char* data, qint64 len)
+{
+    Q_UNUSED(data)
+    Q_UNUSED(len)
+
+    emit readyRead();
+    return 0;
+}
+
+void InputPrivate::trigger()
+{
+    emit readyRead();
+}
+
diff --git a/src/multimedia/audio/qaudioinput_win32_p.h b/src/multimedia/audio/qaudioinput_win32_p.h
new file mode 100644
index 0000000..32464f0
--- /dev/null
+++ b/src/multimedia/audio/qaudioinput_win32_p.h
@@ -0,0 +1,154 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifndef QAUDIOINPUTWIN_H
+#define QAUDIOINPUTWIN_H
+
+#include <windows.h>
+#include <mmsystem.h>
+
+#include <QtCore/qfile.h>
+#include <QtCore/qdebug.h>
+#include <QtCore/qtimer.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qstringlist.h>
+#include <QtCore/qdatetime.h>
+
+#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qaudiodeviceinfo.h>
+#include <QtMultimedia/qaudioengine.h>
+
+
+static CRITICAL_SECTION waveInCriticalSection;
+
+class QAudioInputPrivate : public QAbstractAudioInput
+{
+    Q_OBJECT
+public:
+    QAudioInputPrivate(const QByteArray &device, const QAudioFormat& audioFormat);
+    ~QAudioInputPrivate();
+
+    qint64 read(char* data, qint64 len);
+
+    QAudioFormat format() const;
+    QIODevice* start(QIODevice* device = 0);
+    void stop();
+    void reset();
+    void suspend();
+    void resume();
+    int bytesReady() const;
+    int periodSize() const;
+    void setBufferSize(int value);
+    int bufferSize() const;
+    void setNotifyInterval(int milliSeconds);
+    int notifyInterval() const;
+    qint64 totalTime() const;
+    qint64 clock() const;
+    QAudio::Error error() const;
+    QAudio::State state() const;
+
+    QIODevice* audioSource;
+    QAudioFormat settings;
+    QAudio::Error errorState;
+    QAudio::State deviceState;
+
+private:
+    qint32 buffer_size;
+    qint32 period_size;
+    qint32 header;
+    QByteArray m_device;
+    int bytesAvailable;
+    int intervalTime;
+    QTime timeStamp;
+    QTime timeStampOpened;
+    qint64 totalTimeValue;
+    bool pullMode;
+    bool resuming;
+    WAVEFORMATEX wfx;
+    HWAVEIN hWaveIn;
+    MMRESULT result;
+    WAVEHDR* waveBlocks;
+    volatile int waveFreeBlockCount;
+    int waveCurrentBlock;
+
+    static void CALLBACK waveInProc( HWAVEIN hWaveIn, UINT uMsg,
+            DWORD dwInstance, DWORD dwParam1, DWORD dwParam2 );
+
+    WAVEHDR* allocateBlocks(int size, int count);
+    void freeBlocks(WAVEHDR* blockArray);
+    bool open();
+    void close();
+
+private slots:
+    void feedback();
+    bool deviceReady();
+
+signals:
+    void processMore();
+};
+
+class InputPrivate : public QIODevice
+{
+    Q_OBJECT
+public:
+    InputPrivate(QAudioInputPrivate* audio);
+    ~InputPrivate();
+
+    qint64 readData( char* data, qint64 len);
+    qint64 writeData(const char* data, qint64 len);
+
+    void trigger();
+private:
+    QAudioInputPrivate *audioDevice;
+};
+
+#endif
diff --git a/src/multimedia/audio/qaudiooutput.cpp b/src/multimedia/audio/qaudiooutput.cpp
new file mode 100644
index 0000000..785da61
--- /dev/null
+++ b/src/multimedia/audio/qaudiooutput.cpp
@@ -0,0 +1,403 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qaudiodeviceinfo.h>
+#include <QtMultimedia/qaudioengine.h>
+#include <QtMultimedia/qaudiooutput.h>
+
+#include "qaudiodevicefactory_p.h"
+
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QAudioOutput
+    \brief The QAudioOutput class provides an interface for sending audio data to an audio output device.
+
+    \inmodule QtMultimedia
+    \ingroup  multimedia
+    \since 4.6
+
+    You can construct an audio output with the system's
+    \l{QAudioDeviceInfo::defaultOutputDevice()}{default audio output
+    device}. It is also possible to create QAudioOutput with a
+    specific QAudioDeviceId. When you create the audio output, you
+    should also send in the QAudioFormat to be used for the playback
+    (see the QAudioFormat class description for details).
+
+    To play a file:
+
+    Starting to play an audio stream is simply a matter of calling
+    start() with a QIODevice. QAudioOutput will then fetch the data it
+    needs from the io device. So playing back an audio file is as
+    simple as:
+
+    \code
+      QFile inputFile;
+      inputFile.setFileName("/tmp/test.raw");
+      inputFile.open(QIODevice::ReadOnly);
+
+      QAudioFormat format;
+      // Set up the format, eg.
+      format.setFrequency(8000);
+      format.setChannels(1);
+      format.setSampleSize(8);
+      format.setCodec("audio/pcm");
+      format.setByteOrder(QAudioFormat::LittleEndian);
+      format.setSampleType(QAudioFormat::UnSignedInt);
+
+      QAudioOutput *audio = new QAudioOutput(format, this);
+      connect(audio,SIGNAL(stateChanged(QAudio::State)),SLOT(finishedPlaying(QAudio::State)));
+      audio->start(inputFile);
+
+    \endcode
+
+    The file will start playing assuming that the audio system and
+    output device support it. If you run out of luck, check what's
+    up with the error() function.
+
+    After the file has finished playing, we need to stop the device:
+
+    \code
+      void finishedPlaying(QAudio::State state)
+      {
+        if(state == QAudio::IdleState) {
+          audio->stop();
+          inputFile.close();
+        }
+      }
+    \endcode
+
+    At any given time, the QAudioOutput will be in one of four states:
+    active, suspended, stopped, or idle. These states are described
+    by the QAudio::State enum.
+    State changes are reported through the stateChanged() signal. You
+    can use this signal to, for instance, update the GUI of the
+    application; the mundane example here being changing the state of
+    a \c { play/pause } button. You request a state change directly
+    with suspend(), stop(), reset(), resume(), and start().
+
+    While the stream is playing, you can set a notify interval in
+    milliseconds with setNotifyInterval(). This interval specifies the
+    time between two emissions of the notify() signal. This is
+    relative to the position in the stream, i.e., if the QAudioOutput
+    is in the SuspendedState or the IdleState, the notify() signal is
+    not emitted. A typical use-case would be to update a
+    \l{QSlider}{slider} that allows seeking in the stream.
+    If you want the time since playback started regardless of which
+    states the audio output has been in, clock() is the function for you.
+
+    If an error occurs, you can fetch the \l{QAudio::Error}{error
+    type} with the error() function. Please see the QAudio::Error enum
+    for a description of the possible errors that are reported.
+
+    If an error is encountered state changes to QAudio::StopState.
+
+    \sa QAudioInput, QAudioDeviceInfo
+*/
+
+/*!
+    Construct a new audio output and attach it to \a parent.
+    The default audio output device is used with the output
+    \a format parameters.
+*/
+
+QAudioOutput::QAudioOutput(const QAudioFormat &format, QObject *parent):
+    QObject(parent)
+{
+    d = QAudioDeviceFactory::createDefaultOutputDevice(format);
+    connect(d, SIGNAL(notify()), SIGNAL(notify()));
+    connect(d, SIGNAL(stateChanged(QAudio::State)), SIGNAL(stateChanged(QAudio::State)));
+}
+
+/*!
+    Construct a new audio output and attach it to \a parent.
+    The \a id of the audio output device is used with the output
+    \a format parameters.
+*/
+
+QAudioOutput::QAudioOutput(const QAudioDeviceId &id, const QAudioFormat &format, QObject *parent):
+    QObject(parent)
+{
+    d = QAudioDeviceFactory::createOutputDevice(id, format);
+    connect(d, SIGNAL(notify()), SIGNAL(notify()));
+    connect(d, SIGNAL(stateChanged(QAudio::State)), SIGNAL(stateChanged(QAudio::State)));
+}
+
+/*!
+    Destroys this audio output.
+*/
+
+QAudioOutput::~QAudioOutput()
+{
+    delete d;
+}
+
+/*!
+    Returns the QAudioFormat being used.
+
+*/
+
+QAudioFormat QAudioOutput::format() const
+{
+    return d->format();
+}
+
+/*!
+    Uses the \a device as the QIODevice to transfer data.
+    If \a device is null then the class creates an internal QIODevice.
+    Returns a pointer to the QIODevice being used to handle the data
+    transfer. This QIODevice can be used to write() audio data
+    directly.
+    Passing a QIODevice allows the data to be transfered without any extra code.
+    All that is required is to open the QIODevice.
+
+    /sa QIODevice
+*/
+
+QIODevice* QAudioOutput::start(QIODevice* device)
+{
+    /*
+    PULL MODE (valid QIODevice)
+    -If currently not StopState, stop.
+    -If previous start was push mode, delete internal QIODevice.
+    -open audio output.
+    -If ok, NoError and ActiveState, else OpenError and StopState
+    -emit stateChanged()
+    -return device
+
+    PUSH MODE (device = 0)
+    -If currently not StopState, stop.
+    -If no internal QIODevice, create one.
+    -open audio output.
+    -If ok, NoError and IdleState, else OpenError and StopState
+    -emit stateChanged()
+    -return internal QIODevice
+    */
+    return d->start(device);
+}
+
+/*!
+    Stops the audio output.
+*/
+
+void QAudioOutput::stop()
+{
+    /*
+    -If StopState, return
+    -set to StopState
+    -detach from audio device
+    -emit stateChanged()
+    */
+    d->stop();
+}
+
+/*!
+    Drops all audio data in the buffers, resets buffers to zero.
+*/
+
+void QAudioOutput::reset()
+{
+    /*
+    -drop all buffered audio, set buffers to zero.
+    -call stop()
+    */
+    d->reset();
+}
+
+/*!
+    Stops processing audio data, preserving buffered audio data.
+*/
+
+void QAudioOutput::suspend()
+{
+    /*
+    -If not ActiveState|IdleState, return
+    -stop processing audio, saving all buffered audio data
+    -set NoError and SuspendState
+    -emit stateChanged()
+    */
+    d->suspend();
+}
+
+/*!
+    Resumes processing audio data after a suspend().
+*/
+
+void QAudioOutput::resume()
+{
+    /*
+    -If SuspendState, return
+    -resume audio
+    -(PULL MODE): set ActiveState, NoError
+    -(PUSH MODE): set IdleState, NoError
+    -kick start audio if needed
+    -emit stateChanged()
+    */
+     d->resume();
+}
+
+/*!
+    Returns the free space available in bytes in the audio buffer.
+*/
+
+int QAudioOutput::bytesFree() const
+{
+    /*
+    -If not ActiveState|IdleState, return 0
+    -return space available in audio buffer in bytes
+    */
+    return d->bytesFree();
+}
+
+/*!
+    Returns the period size in bytes.
+
+    Note: This is the recommended write size in bytes.
+*/
+
+int QAudioOutput::periodSize() const
+{
+    return d->periodSize();
+}
+
+/*!
+    Sets the audio buffer size to \a value in bytes.
+
+    Note: This function can be called anytime before start(), calls to this
+    are ignored after start(). It should not be assumed that the buffer size
+    set is the actual buffer size used, calling bufferSize() anytime after start()
+    will return the actual buffer size being used.
+*/
+
+void QAudioOutput::setBufferSize(int value)
+{
+    d->setBufferSize(value);
+}
+
+/*!
+    Returns the audio buffer size in bytes.
+
+    If called before start(), returns platform default value.
+    If called before start() but setBufferSize() was called prior, returns value set by setBufferSize().
+    If called after start(), returns the actual buffer size being used. This may not be what was set previously
+    by setBufferSize().
+
+*/
+
+int QAudioOutput::bufferSize() const
+{
+    return d->bufferSize();
+}
+
+/*!
+    Sets the interval for notify() signal to be emitted.
+    This is based on the \a ms of audio data processed
+    not on actual real-time. The resolution of the timer is platform specific.
+*/
+
+void QAudioOutput::setNotifyInterval(int ms)
+{
+    d->setNotifyInterval(ms);
+}
+
+/*!
+    Returns the notify interval in milliseconds.
+*/
+
+int QAudioOutput::notifyInterval() const
+{
+    return d->notifyInterval();
+}
+
+/*!
+    Returns the amount of audio data processed since start()
+    was called in microseconds.
+*/
+
+qint64 QAudioOutput::totalTime() const
+{
+    return d->totalTime();
+}
+
+/*!
+    Returns the microseconds since start() was called, including time in Idle and
+    Suspend states.
+*/
+
+qint64 QAudioOutput::clock() const
+{
+    return d->clock();
+}
+
+/*!
+    Returns the error state.
+*/
+
+QAudio::Error QAudioOutput::error() const
+{
+    return d->error();
+}
+
+/*!
+    Returns the state of audio processing.
+*/
+
+QAudio::State QAudioOutput::state() const
+{
+    return d->state();
+}
+
+/*!
+    \fn QAudioOutput::stateChanged(QAudio::State state)
+    This signal is emitted when the device \a state has changed.
+    This is the current state of the audio output.
+*/
+
+/*!
+    \fn QAudioOutput::notify()
+    This signal is emitted when x ms of audio data has been processed
+    the interval set by setNotifyInterval(x).
+*/
+
+QT_END_NAMESPACE
diff --git a/src/multimedia/audio/qaudiooutput.h b/src/multimedia/audio/qaudiooutput.h
new file mode 100644
index 0000000..95e28ea
--- /dev/null
+++ b/src/multimedia/audio/qaudiooutput.h
@@ -0,0 +1,109 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#ifndef QAUDIOOUTPUT_H
+#define QAUDIOOUTPUT_H
+
+#include <QtCore/qiodevice.h>
+#include <QtCore/qglobal.h>
+
+#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qaudioformat.h>
+#include <QtMultimedia/qaudiodeviceid.h>
+
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Multimedia)
+
+
+class QAbstractAudioOutput;
+
+class Q_MULTIMEDIA_EXPORT QAudioOutput : public QObject
+{
+    Q_OBJECT
+
+public:
+    explicit QAudioOutput(const QAudioFormat &format = QAudioFormat(), QObject *parent = 0);
+    explicit QAudioOutput(const QAudioDeviceId &id, const QAudioFormat &format = QAudioFormat(), QObject *parent = 0);
+    ~QAudioOutput();
+
+    QAudioFormat format() const;
+
+    QIODevice* start(QIODevice *device = 0);
+    void stop();
+    void reset();
+    void suspend();
+    void resume();
+
+    void setBufferSize(int bytes);
+    int bufferSize() const;
+
+    int bytesFree() const;
+    int periodSize() const;
+
+    void setNotifyInterval(int milliSeconds);
+    int notifyInterval() const;
+
+    qint64 totalTime() const;
+    qint64 clock() const;
+
+    QAudio::Error error() const;
+    QAudio::State state() const;
+
+Q_SIGNALS:
+    void stateChanged(QAudio::State);
+    void notify();
+
+private:
+    Q_DISABLE_COPY(QAudioOutput)
+
+    QAbstractAudioOutput* d;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QAUDIOOUTPUT_H
diff --git a/src/multimedia/audio/qaudiooutput_alsa_p.cpp b/src/multimedia/audio/qaudiooutput_alsa_p.cpp
new file mode 100644
index 0000000..d41c449
--- /dev/null
+++ b/src/multimedia/audio/qaudiooutput_alsa_p.cpp
@@ -0,0 +1,706 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qcoreapplication.h>
+#include "qaudiooutput_alsa_p.h"
+
+//#define DEBUG_AUDIO 1
+
+QAudioOutputPrivate::QAudioOutputPrivate(const QByteArray &device, const QAudioFormat& audioFormat):
+    settings(audioFormat)
+{
+    bytesAvailable = 0;
+    handle = 0;
+    ahandler = 0;
+    access = SND_PCM_ACCESS_RW_INTERLEAVED;
+    pcmformat = SND_PCM_FORMAT_S16;
+    buffer_frames = 0;
+    period_frames = 0;
+    buffer_size = 0;
+    period_size = 0;
+    buffer_time = 100000;
+    period_time = 20000;
+    totalTimeValue = 0;
+    intervalTime = 1000;
+    audioBuffer = 0;
+    errorState = QAudio::NoError;
+    deviceState = QAudio::StopState;
+    audioSource = 0;
+    pullMode = true;
+    resuming = false;
+    opened = false;
+
+    QStringList list1 = QString(tr(device)).split(tr(":"));
+    m_device = QByteArray(list1.at(0).toLocal8Bit().constData());
+
+    timer = new QTimer(this);
+    connect(timer,SIGNAL(timeout()),SLOT(userFeed()));
+}
+
+QAudioOutputPrivate::~QAudioOutputPrivate()
+{
+    close();
+    disconnect(timer, SIGNAL(timeout()));
+    QCoreApplication::processEvents();
+    delete timer;
+}
+
+QAudio::Error QAudioOutputPrivate::error() const
+{
+    return errorState;
+}
+
+QAudio::State QAudioOutputPrivate::state() const
+{
+    return deviceState;
+}
+
+void QAudioOutputPrivate::async_callback(snd_async_handler_t *ahandler)
+{
+    QAudioOutputPrivate* audioOut;
+
+    audioOut = static_cast<QAudioOutputPrivate*>
+        (snd_async_handler_get_callback_private(ahandler));
+
+    if((audioOut->deviceState==QAudio::ActiveState)||(audioOut->resuming))
+        audioOut->feedback();
+}
+
+int QAudioOutputPrivate::xrun_recovery(int err)
+{
+    int  count = 0;
+    bool reset = false;
+
+    if(err == -EPIPE) {
+        errorState = QAudio::UnderrunError;
+        err = snd_pcm_prepare(handle);
+        if(err < 0)
+            reset = true;
+
+    } else if((err == -ESTRPIPE)||(err == -EIO)) {
+        errorState = QAudio::IOError;
+        while((err = snd_pcm_resume(handle)) == -EAGAIN){
+            usleep(100);
+            count++;
+            if(count > 5) {
+                reset = true;
+                break;
+            }
+        }
+        if(err < 0) {
+            err = snd_pcm_prepare(handle);
+            if(err < 0)
+                reset = true;
+        }
+    }
+    if(reset) {
+        close();
+        open();
+        snd_pcm_prepare(handle);
+        return 0;
+    }
+    return err;
+}
+
+int QAudioOutputPrivate::setFormat()
+{
+    snd_pcm_format_t pcmformat = SND_PCM_FORMAT_S16;
+
+    if(settings.sampleSize() == 8) {
+        pcmformat = SND_PCM_FORMAT_U8;
+
+    } else if(settings.sampleSize() == 16) {
+        if(settings.sampleType() == QAudioFormat::SignedInt) {
+            if(settings.byteOrder() == QAudioFormat::LittleEndian)
+                pcmformat = SND_PCM_FORMAT_S16_LE;
+            else
+                pcmformat = SND_PCM_FORMAT_S16_BE;
+        } else if(settings.sampleType() == QAudioFormat::UnSignedInt) {
+            if(settings.byteOrder() == QAudioFormat::LittleEndian)
+                pcmformat = SND_PCM_FORMAT_U16_LE;
+            else
+                pcmformat = SND_PCM_FORMAT_U16_BE;
+        }
+    } else if(settings.sampleSize() == 24) {
+        if(settings.sampleType() == QAudioFormat::SignedInt) {
+            if(settings.byteOrder() == QAudioFormat::LittleEndian)
+                pcmformat = SND_PCM_FORMAT_S24_LE;
+            else
+                pcmformat = SND_PCM_FORMAT_S24_BE;
+        } else if(settings.sampleType() == QAudioFormat::UnSignedInt) {
+            if(settings.byteOrder() == QAudioFormat::LittleEndian)
+                pcmformat = SND_PCM_FORMAT_U24_LE;
+            else
+                pcmformat = SND_PCM_FORMAT_U24_BE;
+        }
+    } else if(settings.sampleSize() == 32) {
+        if(settings.sampleType() == QAudioFormat::SignedInt) {
+            if(settings.byteOrder() == QAudioFormat::LittleEndian)
+                pcmformat = SND_PCM_FORMAT_S32_LE;
+            else
+                pcmformat = SND_PCM_FORMAT_S32_BE;
+        } else if(settings.sampleType() == QAudioFormat::UnSignedInt) {
+            if(settings.byteOrder() == QAudioFormat::LittleEndian)
+                pcmformat = SND_PCM_FORMAT_U32_LE;
+            else
+                pcmformat = SND_PCM_FORMAT_U32_BE;
+        } else if(settings.sampleType() == QAudioFormat::Float) {
+            if(settings.byteOrder() == QAudioFormat::LittleEndian)
+                pcmformat = SND_PCM_FORMAT_FLOAT_LE;
+            else
+                pcmformat = SND_PCM_FORMAT_FLOAT_BE;
+        }
+    } else if(settings.sampleSize() == 64) {
+        if(settings.byteOrder() == QAudioFormat::LittleEndian)
+            pcmformat = SND_PCM_FORMAT_FLOAT64_LE;
+        else
+            pcmformat = SND_PCM_FORMAT_FLOAT64_BE;
+    }
+
+    return snd_pcm_hw_params_set_format( handle, hwparams, pcmformat);
+}
+
+QIODevice* QAudioOutputPrivate::start(QIODevice* device)
+{
+    if(deviceState != QAudio::StopState)
+        deviceState = QAudio::StopState;
+
+    errorState = QAudio::NoError;
+
+    // Handle change of mode
+    if(audioSource && pullMode && !device) {
+        // pull -> push
+        close();
+        audioSource = 0;
+    } else if(audioSource && !pullMode && device) {
+        // push -> pull
+        close();
+        delete audioSource;
+        audioSource = 0;
+    }
+
+    if(device) {
+        //set to pull mode
+        pullMode = true;
+        audioSource = device;
+        deviceState = QAudio::ActiveState;
+    } else {
+        //set to push mode
+        if(!audioSource) {
+            audioSource = new OutputPrivate(this);
+            audioSource->open(QIODevice::WriteOnly|QIODevice::Unbuffered);
+        }
+        pullMode = false;
+        deviceState = QAudio::IdleState;
+    }
+
+    open();
+
+    emit stateChanged(deviceState);
+
+    return audioSource;
+}
+
+void QAudioOutputPrivate::stop()
+{
+    if(deviceState == QAudio::StopState)
+        return;
+    deviceState = QAudio::StopState;
+    close();
+    emit stateChanged(deviceState);
+}
+
+bool QAudioOutputPrivate::open()
+{
+    if(opened)
+        return true;
+
+#ifdef DEBUG_AUDIO
+    QTime now(QTime::currentTime());
+    qDebug()<<now.second()<<"s "<<now.msec()<<"ms :open()";
+#endif
+    timeStamp.restart();
+
+    int dir;
+    int err=-1;
+    int count=0;
+    unsigned int freakuency=settings.frequency();
+
+    QString dev = tr(m_device.constData());
+    if(!dev.contains(tr("default"))) {
+        dev = QString(tr("default:CARD=%1")).arg(tr(m_device.constData()));
+    }
+    // Step 1: try and open the device
+    while((count < 5) && (err < 0)) {
+        err=snd_pcm_open(&handle,dev.toLocal8Bit().constData(),SND_PCM_STREAM_PLAYBACK,0);
+        if(err < 0)
+            count++;
+    }
+    if (( err < 0)||(handle == 0)) {
+        errorState = QAudio::OpenError;
+        deviceState = QAudio::StopState;
+        return false;
+    }
+    snd_pcm_nonblock( handle, 0 );
+
+    // Step 2: Set the desired HW parameters.
+    snd_pcm_hw_params_alloca( &hwparams );
+
+    bool fatal = false;
+    QString errMessage;
+    unsigned int chunks = 8;
+
+    err = snd_pcm_hw_params_any( handle, hwparams );
+    if ( err < 0 ) {
+        fatal = true;
+        errMessage = QString(tr("QAudioOutput: snd_pcm_hw_params_any: err = %1")).arg(err);
+    }
+    if ( !fatal ) {
+        err = snd_pcm_hw_params_set_rate_resample( handle, hwparams, 1 );
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioOutput: snd_pcm_hw_params_set_rate_resample: err = %1")).arg(err);
+        }
+    }
+    if ( !fatal ) {
+        err = snd_pcm_hw_params_set_access( handle, hwparams, access );
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioOutput: snd_pcm_hw_params_set_access: err = %1")).arg(err);
+        }
+    }
+    if ( !fatal ) {
+        err = setFormat();
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioOutput: snd_pcm_hw_params_set_format: err = %1")).arg(err);
+        }
+    }
+    if ( !fatal ) {
+        err = snd_pcm_hw_params_set_channels( handle, hwparams, (unsigned int)settings.channels() );
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioOutput: snd_pcm_hw_params_set_channels: err = %1")).arg(err);
+        }
+    }
+    if ( !fatal ) {
+        err = snd_pcm_hw_params_set_rate_near( handle, hwparams, &freakuency, 0 );
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioOutput: snd_pcm_hw_params_set_rate_near: err = %1")).arg(err);
+        }
+    }
+    if ( !fatal ) {
+        err = snd_pcm_hw_params_set_buffer_time_near(handle, hwparams, &buffer_time, &dir);
+        if ( err < 0 ) {
+            fatal = true;
+                errMessage = QString(tr("QAudioOutput: snd_pcm_hw_params_set_buffer_time_near: err = %1")).arg(err);
+        }
+    }
+    if ( !fatal ) {
+        err = snd_pcm_hw_params_set_period_time_near(handle, hwparams, &period_time, &dir);
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioOutput: snd_pcm_hw_params_set_period_time_near: err = %1")).arg(err);
+        }
+    }
+    if ( !fatal ) {
+        err = snd_pcm_hw_params_set_periods_near(handle, hwparams, &chunks, &dir);
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioOutput: snd_pcm_hw_params_set_periods_near: err = %1")).arg(err);
+        }
+    }
+    if ( !fatal ) {
+        err = snd_pcm_hw_params(handle, hwparams);
+        if ( err < 0 ) {
+            fatal = true;
+            errMessage = QString(tr("QAudioOutput: snd_pcm_hw_params: err = %1")).arg(err);
+        }
+    }
+    if( err < 0) {
+        qWarning()<<errMessage;
+        errorState = QAudio::OpenError;
+        deviceState = QAudio::StopState;
+        return false;
+    }
+    snd_pcm_hw_params_get_buffer_size(hwparams,&buffer_frames);
+    buffer_size = snd_pcm_frames_to_bytes(handle,buffer_frames);
+    snd_pcm_hw_params_get_period_size(hwparams,&period_frames, &dir);
+    period_size = snd_pcm_frames_to_bytes(handle,period_frames);
+    snd_pcm_hw_params_get_buffer_time(hwparams,&buffer_time, &dir);
+    snd_pcm_hw_params_get_period_time(hwparams,&period_time, &dir);
+
+    // Step 3: Set the desired SW parameters.
+    snd_pcm_sw_params_t *swparams;
+    snd_pcm_sw_params_alloca(&swparams);
+    snd_pcm_sw_params_current(handle, swparams);
+    snd_pcm_sw_params_set_start_threshold(handle,swparams,period_frames);
+    snd_pcm_sw_params_set_stop_threshold(handle,swparams,buffer_frames);
+    snd_pcm_sw_params_set_avail_min(handle, swparams,period_frames);
+    snd_pcm_sw_params(handle, swparams);
+
+    // Step 4: Prepare audio
+    if(audioBuffer == 0)
+        audioBuffer = new char[snd_pcm_frames_to_bytes(handle,buffer_frames)];
+    snd_pcm_prepare( handle );
+    snd_pcm_start(handle);
+
+    // Step 5: Setup callback and timer fallback
+    snd_async_add_pcm_handler(&ahandler, handle, async_callback, this);
+    bytesAvailable = bytesFree();
+
+    // Step 6: Start audio processing
+    timer->start(period_time/1000);
+
+    errorState  = QAudio::NoError;
+    totalTimeValue = 0;
+    opened = true;
+
+    return true;
+}
+
+void QAudioOutputPrivate::close()
+{
+    deviceState = QAudio::StopState;
+    timer->stop();
+
+    if ( handle ) {
+        snd_pcm_drain( handle );
+        snd_pcm_close( handle );
+        handle = 0;
+        delete [] audioBuffer;
+        audioBuffer=0;
+    }
+    if(!pullMode && audioSource) {
+        delete audioSource;
+        audioSource = 0;
+    }
+    opened = false;
+}
+
+int QAudioOutputPrivate::bytesFree() const
+{
+    if(resuming)
+        return period_size;
+
+    if(deviceState != QAudio::ActiveState && deviceState != QAudio::IdleState)
+        return 0;
+    int frames = snd_pcm_avail_update(handle);
+    if((int)frames > (int)buffer_frames)
+        frames = buffer_frames;
+
+    return snd_pcm_frames_to_bytes(handle, frames);
+}
+
+qint64 QAudioOutputPrivate::write( const char *data, qint64 len )
+{
+    // Write out some audio data
+    if ( !handle )
+        return 0;
+#ifdef DEBUG_AUDIO
+    qDebug()<<"frames to write out = "<<
+        snd_pcm_bytes_to_frames( handle, (int)len )<<" ("<<len<<") bytes";
+#endif
+    int frames, err;
+    int space = bytesFree();
+    if(len < space) {
+        // Just write it
+        frames = snd_pcm_bytes_to_frames( handle, (int)len );
+        err = snd_pcm_writei( handle, data, frames );
+    } else {
+        // Only write space worth
+        frames = snd_pcm_bytes_to_frames( handle, (int)space );
+        err = snd_pcm_writei( handle, data, frames );
+    }
+    if(err > 0) {
+        totalTimeValue += err*1000000/settings.frequency();
+        resuming = false;
+        errorState = QAudio::NoError;
+        deviceState = QAudio::ActiveState;
+        return snd_pcm_frames_to_bytes( handle, err );
+    } else
+        err = xrun_recovery(err);
+
+    if(err < 0) {
+        close();
+        errorState = QAudio::FatalError;
+        deviceState = QAudio::StopState;
+        emit stateChanged(deviceState);
+    }
+    return 0;
+}
+
+int QAudioOutputPrivate::periodSize() const
+{
+    return period_size;
+}
+
+void QAudioOutputPrivate::setBufferSize(int value)
+{
+    if(deviceState == QAudio::StopState)
+        buffer_size = value;
+}
+
+int QAudioOutputPrivate::bufferSize() const
+{
+    return buffer_size;
+}
+
+void QAudioOutputPrivate::setNotifyInterval(int ms)
+{
+    intervalTime = ms;
+}
+
+int QAudioOutputPrivate::notifyInterval() const
+{
+    return intervalTime;
+}
+
+qint64 QAudioOutputPrivate::totalTime() const
+{
+    return totalTimeValue;
+}
+
+void QAudioOutputPrivate::resume()
+{
+    if(deviceState == QAudio::SuspendState) {
+        int err = 0;
+
+        if(handle) {
+            err = snd_pcm_prepare( handle );
+            if(err < 0)
+                xrun_recovery(err);
+
+            err = snd_pcm_start(handle);
+            if(err < 0)
+                xrun_recovery(err);
+
+            bytesAvailable = (int)snd_pcm_frames_to_bytes(handle, buffer_frames);
+        }
+        resuming = true;
+        if(pullMode)
+            deviceState = QAudio::ActiveState;
+        else
+            deviceState = QAudio::IdleState;
+
+        errorState = QAudio::NoError;
+        timer->start(period_time/1000);
+        emit stateChanged(deviceState);
+    }
+}
+
+QAudioFormat QAudioOutputPrivate::format() const
+{
+    return settings;
+}
+
+void QAudioOutputPrivate::suspend()
+{
+    if(deviceState == QAudio::ActiveState || deviceState == QAudio::IdleState || resuming) {
+        timer->stop();
+        deviceState = QAudio::SuspendState;
+        errorState = QAudio::NoError;
+        emit stateChanged(deviceState);
+    }
+}
+
+void QAudioOutputPrivate::userFeed()
+{
+    if(deviceState == QAudio::StopState || deviceState == QAudio::SuspendState)
+        return;
+#ifdef DEBUG_AUDIO
+    QTime now(QTime::currentTime());
+    qDebug()<<now.second()<<"s "<<now.msec()<<"ms :userFeed() OUT";
+#endif
+    if(deviceState ==  QAudio::IdleState)
+        bytesAvailable = bytesFree();
+
+    deviceReady();
+}
+
+void QAudioOutputPrivate::feedback()
+{
+    QMetaObject::invokeMethod(this, SLOT(updateAvailable()), Qt::QueuedConnection);
+}
+
+void QAudioOutputPrivate::updateAvailable()
+{
+#ifdef DEBUG_AUDIO
+    QTime now(QTime::currentTime());
+    qDebug()<<now.second()<<"s "<<now.msec()<<"ms :updateAvailable()";
+#endif
+    bytesAvailable = bytesFree();
+}
+
+bool QAudioOutputPrivate::deviceReady()
+{
+    if(pullMode) {
+        int l = 0;
+        int chunks = bytesAvailable/period_size;
+        if(chunks==0) {
+            bytesAvailable = bytesFree();
+            return false;
+        }
+#ifdef DEBUG_AUDIO
+        qDebug()<<"deviceReady() avail="<<bytesAvailable<<" bytes, period size="<<period_size<<" bytes";
+        qDebug()<<"deviceReady() no. of chunks that can fit ="<<chunks<<", chunks in bytes ="<<period_size*chunks;
+#endif
+        int input = period_frames*chunks;
+        if(input > (int)buffer_frames)
+            input = buffer_frames;
+        l = audioSource->read(audioBuffer,snd_pcm_frames_to_bytes(handle, input));
+        if(l > 0) {
+            // Got some data to output
+            if(deviceState != QAudio::ActiveState)
+                return true;
+            write(audioBuffer,l);
+            bytesAvailable = bytesFree();
+
+        } else if(l == 0) {
+            // Did not get any data to output
+            bytesAvailable = bytesFree();
+            if(bytesAvailable > snd_pcm_frames_to_bytes(handle, buffer_frames-period_frames)) {
+                // Underrun
+                errorState = QAudio::UnderrunError;
+                deviceState = QAudio::IdleState;
+                emit stateChanged(deviceState);
+            }
+
+        } else if(l < 0) {
+            close();
+            errorState = QAudio::IOError;
+            emit stateChanged(deviceState);
+        }
+    } else
+        bytesAvailable = bytesFree();
+
+    if(deviceState != QAudio::ActiveState)
+        return true;
+
+    if(timeStamp.elapsed() > intervalTime && intervalTime > 50) {
+        emit notify();
+        timeStamp.restart();
+    }
+    return true;
+}
+
+qint64 QAudioOutputPrivate::clock() const
+{
+    if(!handle)
+        return 0;
+
+    if(deviceState != QAudio::ActiveState)
+        return 0;
+
+    snd_pcm_status_t* status;
+    snd_pcm_status_alloca(&status);
+
+    snd_timestamp_t t1,t2;
+    if( snd_pcm_status(handle, status) >= 0) {
+        snd_pcm_status_get_tstamp(status,&t1);
+        snd_pcm_status_get_trigger_tstamp(status,&t2);
+        t1.tv_sec-=t2.tv_sec;
+
+        signed long l = (signed long)t1.tv_usec - (signed long)t2.tv_usec;
+        if(l < 0) {
+            t1.tv_sec--;
+            l = -l;
+            l %= 1000000;
+        }
+        return ((t1.tv_sec * 1000)+l/1000);
+    } else
+        return 0;
+    return 0;
+}
+
+void QAudioOutputPrivate::reset()
+{
+    if(handle)
+        snd_pcm_reset(handle);
+
+    stop();
+}
+
+OutputPrivate::OutputPrivate(QAudioOutputPrivate* audio)
+{
+    audioDevice = qobject_cast<QAudioOutputPrivate*>(audio);
+}
+
+OutputPrivate::~OutputPrivate() {}
+
+qint64 OutputPrivate::readData( char* data, qint64 len)
+{
+    Q_UNUSED(data)
+    Q_UNUSED(len)
+
+    return 0;
+}
+
+qint64 OutputPrivate::writeData(const char* data, qint64 len)
+{
+    int retry = 0;
+    qint64 written = 0;
+    if((audioDevice->deviceState == QAudio::ActiveState)
+            ||(audioDevice->deviceState == QAudio::IdleState)) {
+        while(written < len) {
+            int chunk = audioDevice->write(data+written,(len-written));
+            if(chunk <= 0)
+                retry++;
+            written+=chunk;
+            if(retry > 10)
+                return written;
+        }
+    }
+    return written;
+
+}
diff --git a/src/multimedia/audio/qaudiooutput_alsa_p.h b/src/multimedia/audio/qaudiooutput_alsa_p.h
new file mode 100644
index 0000000..f243bad
--- /dev/null
+++ b/src/multimedia/audio/qaudiooutput_alsa_p.h
@@ -0,0 +1,159 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifndef QAUDIOOUTPUTALSA_H
+#define QAUDIOOUTPUTALSA_H
+
+#include <alsa/asoundlib.h>
+
+#include <QtCore/qfile.h>
+#include <QtCore/qdebug.h>
+#include <QtCore/qtimer.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qstringlist.h>
+#include <QtCore/qdatetime.h>
+
+#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qaudiodeviceinfo.h>
+#include <QtMultimedia/qaudioengine.h>
+
+class OutputPrivate;
+
+class QAudioOutputPrivate : public QAbstractAudioOutput
+{
+    friend class OutputPrivate;
+    Q_OBJECT
+public:
+    QAudioOutputPrivate(const QByteArray &device, const QAudioFormat& audioFormat);
+    ~QAudioOutputPrivate();
+
+    qint64 write( const char *data, qint64 len );
+
+    QIODevice* start(QIODevice* device = 0);
+    void stop();
+    void reset();
+    void suspend();
+    void resume();
+    int bytesFree() const;
+    int periodSize() const;
+    void setBufferSize(int value);
+    int bufferSize() const;
+    void setNotifyInterval(int milliSeconds);
+    int notifyInterval() const;
+    qint64 totalTime() const;
+    qint64 clock() const;
+    QAudio::Error error() const;
+    QAudio::State state() const;
+    QAudioFormat format() const;
+
+    QIODevice* audioSource;
+    QAudioFormat settings;
+    QAudio::Error errorState;
+    QAudio::State deviceState;
+
+private slots:
+    void userFeed();
+    void feedback();
+    void updateAvailable();
+    bool deviceReady();
+
+signals:
+    void processMore();
+
+private:
+    bool opened;
+    bool pullMode;
+    bool resuming;
+    int buffer_size;
+    int period_size;
+    int intervalTime;
+    qint64 totalTimeValue;
+    unsigned int buffer_time;
+    unsigned int period_time;
+    snd_pcm_uframes_t buffer_frames;
+    snd_pcm_uframes_t period_frames;
+    static void async_callback(snd_async_handler_t *ahandler);
+    int xrun_recovery(int err);
+
+    int setFormat();
+    bool open();
+    void close();
+
+    QTimer* timer;
+    QByteArray m_device;
+    int bytesAvailable;
+    QTime timeStamp;
+    char* audioBuffer;
+    snd_pcm_t* handle;
+    snd_async_handler_t* ahandler;
+    snd_pcm_access_t access;
+    snd_pcm_format_t pcmformat;
+    snd_timestamp_t* timestamp;
+    snd_pcm_hw_params_t *hwparams;
+};
+
+class OutputPrivate : public QIODevice
+{
+    friend class QAudioOutputPrivate;
+    Q_OBJECT
+public:
+    OutputPrivate(QAudioOutputPrivate* audio);
+    ~OutputPrivate();
+
+    qint64 readData( char* data, qint64 len);
+    qint64 writeData(const char* data, qint64 len);
+
+private:
+    QAudioOutputPrivate *audioDevice;
+};
+
+#endif
diff --git a/src/multimedia/audio/qaudiooutput_mac_p.cpp b/src/multimedia/audio/qaudiooutput_mac_p.cpp
new file mode 100644
index 0000000..0d6e615
--- /dev/null
+++ b/src/multimedia/audio/qaudiooutput_mac_p.cpp
@@ -0,0 +1,700 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <CoreServices/CoreServices.h>
+#include <CoreAudio/CoreAudio.h>
+#include <AudioUnit/AudioUnit.h>
+#include <AudioToolbox/AudioToolbox.h>
+
+#include <QtCore/qendian.h>
+#include <QtCore/qbuffer.h>
+#include <QtCore/qtimer.h>
+#include <QtCore/qdebug.h>
+
+#include <QtMultimedia/qaudiodeviceinfo.h>
+#include <QtMultimedia/qaudiooutput.h>
+
+#include "qaudio_mac_p.h"
+#include "qaudiooutput_mac_p.h"
+
+
+QT_BEGIN_NAMESPACE
+
+
+namespace
+{
+
+static const int default_buffer_size = 8 * 1024;
+
+
+class QAudioOutputBuffer : public QObject
+{
+    Q_OBJECT
+
+public:
+    QAudioOutputBuffer(int bufferSize, int maxPeriodSize, QAudioFormat const& audioFormat):
+        m_deviceError(false),
+        m_maxPeriodSize(maxPeriodSize),
+        m_device(0)
+    {
+        m_buffer = new QAudioRingBuffer(bufferSize + (bufferSize % maxPeriodSize == 0 ? 0 : maxPeriodSize - (bufferSize % maxPeriodSize)));
+        m_bytesPerFrame = (audioFormat.sampleSize() / 8) * audioFormat.channels();
+        m_periodTime = m_maxPeriodSize / m_bytesPerFrame * 1000 / audioFormat.frequency();
+
+        m_fillTimer = new QTimer(this);
+        connect(m_fillTimer, SIGNAL(timeout()), SLOT(fillBuffer()));
+    }
+
+    ~QAudioOutputBuffer()
+    {
+        delete m_buffer;
+    }
+
+    qint64 readFrames(char* data, qint64 maxFrames)
+    {
+        bool    wecan = true;
+        qint64  framesRead = 0;
+
+        while (wecan && framesRead < maxFrames) {
+            QAudioRingBuffer::Region region = m_buffer->acquireReadRegion((maxFrames - framesRead) * m_bytesPerFrame);
+
+            if (region.second > 0) {
+                region.second -= region.second % m_bytesPerFrame;
+                memcpy(data + (framesRead * m_bytesPerFrame), region.first, region.second);
+                framesRead += region.second / m_bytesPerFrame;
+            }
+            else
+                wecan = false;
+
+            m_buffer->releaseReadRegion(region);
+        }
+
+        if (framesRead == 0 && m_deviceError)
+            framesRead = -1;
+
+        return framesRead;
+    }
+
+    qint64 writeBytes(const char* data, qint64 maxSize)
+    {
+        bool    wecan = true;
+        qint64  bytesWritten = 0;
+
+        maxSize -= maxSize % m_bytesPerFrame;
+        while (wecan && bytesWritten < maxSize) {
+            QAudioRingBuffer::Region region = m_buffer->acquireWriteRegion(maxSize - bytesWritten);
+
+            if (region.second > 0) {
+                memcpy(region.first, data + bytesWritten, region.second);
+                bytesWritten += region.second;
+            }
+            else
+                wecan = false;
+
+            m_buffer->releaseWriteRegion(region);
+        }
+
+        if (bytesWritten > 0)
+            emit readyRead();
+
+        return bytesWritten;
+    }
+
+    int available() const
+    {
+        return m_buffer->free();
+    }
+
+    void reset()
+    {
+        m_buffer->reset();
+        m_deviceError = false;
+    }
+
+    void setPrefetchDevice(QIODevice* device)
+    {
+        if (m_device != device) {
+            m_device = device;
+            if (m_device != 0)
+                fillBuffer();
+        }
+    }
+
+    void startFillTimer()
+    {
+        if (m_device != 0)
+            m_fillTimer->start(m_buffer->size() / 2 / m_maxPeriodSize * m_periodTime);
+    }
+
+    void stopFillTimer()
+    {
+        m_fillTimer->stop();
+    }
+
+signals:
+    void readyRead();
+
+private slots:
+    void fillBuffer()
+    {
+        const int free = m_buffer->free();
+        const int writeSize = free - (free % m_maxPeriodSize);
+
+        if (writeSize > 0) {
+            bool    wecan = true;
+            int     filled = 0;
+
+            while (!m_deviceError && wecan && filled < writeSize) {
+                QAudioRingBuffer::Region region = m_buffer->acquireWriteRegion(writeSize - filled);
+
+                if (region.second > 0) {
+                    region.second = m_device->read(region.first, region.second);
+                    if (region.second > 0)
+                        filled += region.second;
+                    else if (region.second == 0)
+                        wecan = false;
+                    else if (region.second < 0) {
+                        m_fillTimer->stop();
+                        region.second = 0;
+                        m_deviceError = true;
+                    }
+                }
+                else
+                    wecan = false;
+
+                m_buffer->releaseWriteRegion(region);
+            }
+
+            if (filled > 0)
+                emit readyRead();
+        }
+    }
+
+private:
+    bool        m_deviceError;
+    int         m_maxPeriodSize;
+    int         m_bytesPerFrame;
+    int         m_periodTime;
+    QIODevice*  m_device;
+    QTimer*     m_fillTimer;
+    QAudioRingBuffer*  m_buffer;
+};
+
+
+}
+
+class MacOutputDevice : public QIODevice
+{
+    Q_OBJECT
+
+public:
+    MacOutputDevice(QAudioOutputBuffer* audioBuffer, QObject* parent):
+        QIODevice(parent),
+        m_audioBuffer(audioBuffer)
+    {
+        open(QIODevice::WriteOnly | QIODevice::Unbuffered);
+    }
+
+    qint64 readData(char* data, qint64 len)
+    {
+        Q_UNUSED(data);
+        Q_UNUSED(len);
+
+        return 0;
+    }
+
+    qint64 writeData(const char* data, qint64 len)
+    {
+        return m_audioBuffer->writeBytes(data, len);
+    }
+
+    bool isSequential() const
+    {
+        return true;
+    }
+
+private:
+    QAudioOutputBuffer*    m_audioBuffer;
+};
+
+
+QAudioOutputPrivate::QAudioOutputPrivate(const QByteArray& device, const QAudioFormat& format):
+    audioFormat(format)
+{
+    QDataStream ds(device);
+    quint32 did, mode;
+
+    ds >> did >> mode;
+
+    if (QAudio::Mode(mode) == QAudio::AudioInput)
+        errorCode = QAudio::OpenError;
+    else {
+        isOpen = false;
+        audioDeviceId = AudioDeviceID(did);
+        audioUnit = 0;
+        audioIO = 0;
+        startTime = 0;
+        totalFrames = 0;
+        audioBuffer = 0;
+        internalBufferSize = default_buffer_size;
+        clockFrequency = AudioGetHostClockFrequency() / 1000;
+        errorCode = QAudio::NoError;
+        stateCode = QAudio::StopState;
+        audioThreadState = Stopped;
+
+        intervalTimer = new QTimer(this);
+        intervalTimer->setInterval(1000);
+        connect(intervalTimer, SIGNAL(timeout()), SIGNAL(notify()));
+    }
+}
+
+QAudioOutputPrivate::~QAudioOutputPrivate()
+{
+    close();
+}
+
+bool QAudioOutputPrivate::open()
+{
+    if (errorCode != QAudio::NoError)
+        return false;
+
+    if (isOpen)
+        return true;
+
+    ComponentDescription    cd;
+    cd.componentType = kAudioUnitType_Output;
+    cd.componentSubType = kAudioUnitSubType_HALOutput;
+    cd.componentManufacturer = kAudioUnitManufacturer_Apple;
+    cd.componentFlags = 0;
+    cd.componentFlagsMask = 0;
+
+    // Open
+    Component cp = FindNextComponent(NULL, &cd);
+    if (cp == 0) {
+        qWarning() << "QAudioOutput: Failed to find HAL Output component";
+        return false;
+    }
+
+    if (OpenAComponent(cp, &audioUnit) != noErr) {
+        qWarning() << "QAudioOutput: Unable to Open Output Component";
+        return false;
+    }
+
+    // register callback
+    AURenderCallbackStruct  cb;
+    cb.inputProc = renderCallback;
+    cb.inputProcRefCon = this;
+
+    if (AudioUnitSetProperty(audioUnit,
+                               kAudioUnitProperty_SetRenderCallback,
+                               kAudioUnitScope_Global,
+                               0,
+                               &cb,
+                               sizeof(cb)) != noErr) {
+        qWarning() << "QAudioOutput: Failed to set AudioUnit callback";
+        return false;
+    }
+
+    // Set Audio Device
+    if (AudioUnitSetProperty(audioUnit,
+                                kAudioOutputUnitProperty_CurrentDevice,
+                                kAudioUnitScope_Global,
+                                0,
+                                &audioDeviceId,
+                                sizeof(audioDeviceId)) != noErr) {
+        qWarning() << "QAudioOutput: Unable to use configured device";
+        return false;
+    }
+
+    // Set stream format
+    streamFormat = toAudioStreamBasicDescription(audioFormat);
+
+    UInt32 size = sizeof(deviceFormat);
+    if (AudioUnitGetProperty(audioUnit,
+                                kAudioUnitProperty_StreamFormat,
+                                kAudioUnitScope_Input,
+                                0,
+                                &deviceFormat,
+                                &size) != noErr) {
+        qWarning() << "QAudioOutput: Unable to retrieve device format";
+        return false;
+    }
+
+    if (AudioUnitSetProperty(audioUnit,
+                                kAudioUnitProperty_StreamFormat,
+                                kAudioUnitScope_Input,
+                                0,
+                                &streamFormat,
+                                sizeof(streamFormat)) != noErr) {
+        qWarning() << "QAudioOutput: Unable to Set Stream information";
+        return false;
+    }
+
+    // Allocate buffer
+    UInt32 numberOfFrames = 0;
+    size = sizeof(UInt32);
+    if (AudioUnitGetProperty(audioUnit,
+                                kAudioDevicePropertyBufferFrameSize,
+                                kAudioUnitScope_Global,
+                                0,
+                                &numberOfFrames,
+                                &size) != noErr) {
+        qWarning() << "QAudioInput: Failed to get audio period size";
+        return false;
+    }
+
+    periodSizeBytes = (numberOfFrames * streamFormat.mSampleRate / deviceFormat.mSampleRate) * 
+                        streamFormat.mBytesPerFrame;
+    if (internalBufferSize < periodSizeBytes * 2)
+        internalBufferSize = periodSizeBytes * 2;
+    else
+        internalBufferSize -= internalBufferSize % streamFormat.mBytesPerFrame;
+
+    audioBuffer = new QAudioOutputBuffer(internalBufferSize, periodSizeBytes, audioFormat);
+    connect(audioBuffer, SIGNAL(readyRead()), SLOT(inputReady()));  // Pull
+
+    audioIO = new MacOutputDevice(audioBuffer, this);
+
+    // Init
+    if (AudioUnitInitialize(audioUnit)) {
+        qWarning() << "QAudioOutput: Failed to initialize AudioUnit";
+        return false;
+    }
+
+    isOpen = true;
+
+    return true;
+}
+
+void QAudioOutputPrivate::close()
+{
+    if (audioUnit != 0) {
+        AudioOutputUnitStop(audioUnit);
+        AudioUnitUninitialize(audioUnit);
+        CloseComponent(audioUnit);
+    }
+
+    delete audioBuffer;
+}
+
+QAudioFormat QAudioOutputPrivate::format() const
+{
+    return audioFormat;
+}
+
+QIODevice* QAudioOutputPrivate::start(QIODevice* device)
+{
+    QIODevice*  op = device;
+
+    if (!open()) {
+        stateCode = QAudio::StopState;
+        errorCode = QAudio::OpenError;
+        return audioIO;
+    }
+
+    reset();
+    audioBuffer->reset();
+    audioBuffer->setPrefetchDevice(op);
+
+    if (op == 0) {
+        op = audioIO;
+        stateCode = QAudio::IdleState;
+    }
+    else
+        stateCode = QAudio::ActiveState;
+
+    // Start
+    errorCode = QAudio::NoError;
+    totalFrames = 0;
+    startTime = AudioGetCurrentHostTime();
+
+    if (stateCode == QAudio::ActiveState)
+        audioThreadStart();
+
+    return op;
+}
+
+void QAudioOutputPrivate::stop()
+{
+    QMutexLocker    lock(&mutex);
+    if (stateCode != QAudio::StopState) {
+        audioThreadDrain();
+
+        stateCode = QAudio::StopState;
+        errorCode = QAudio::NoError;
+        QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
+    }
+}
+
+void QAudioOutputPrivate::reset()
+{
+    QMutexLocker    lock(&mutex);
+    if (stateCode != QAudio::StopState) {
+        audioThreadStop();
+
+        stateCode = QAudio::StopState;
+        errorCode = QAudio::NoError;
+        QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
+    }
+}
+
+void QAudioOutputPrivate::suspend()
+{
+    QMutexLocker    lock(&mutex);
+    if (stateCode == QAudio::ActiveState || stateCode == QAudio::IdleState) {
+        audioThreadStop();
+
+        stateCode = QAudio::SuspendState;
+        errorCode = QAudio::NoError;
+        QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
+    }
+}
+
+void QAudioOutputPrivate::resume()
+{
+    QMutexLocker    lock(&mutex);
+    if (stateCode == QAudio::SuspendState) {
+        audioThreadStart();
+
+        stateCode = QAudio::ActiveState;
+        errorCode = QAudio::NoError;
+        QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
+    }
+}
+
+int QAudioOutputPrivate::bytesFree() const
+{
+    return audioBuffer->available();
+}
+
+int QAudioOutputPrivate::periodSize() const
+{
+    return periodSizeBytes;
+}
+
+void QAudioOutputPrivate::setBufferSize(int bs)
+{
+    if (stateCode == QAudio::StopState)
+        internalBufferSize = bs;
+}
+
+int QAudioOutputPrivate::bufferSize() const
+{
+    return internalBufferSize;
+}
+
+void QAudioOutputPrivate::setNotifyInterval(int milliSeconds)
+{
+    intervalTimer->setInterval(milliSeconds);
+}
+
+int QAudioOutputPrivate::notifyInterval() const
+{
+    return intervalTimer->interval();
+}
+
+qint64 QAudioOutputPrivate::totalTime() const
+{
+    return totalFrames * 1000000 / audioFormat.frequency();
+}
+
+qint64 QAudioOutputPrivate::clock() const
+{
+    return (AudioGetCurrentHostTime() - startTime) / (clockFrequency / 1000);
+}
+
+QAudio::Error QAudioOutputPrivate::error() const
+{
+    return errorCode;
+}
+
+QAudio::State QAudioOutputPrivate::state() const
+{
+    return stateCode;
+}
+
+void QAudioOutputPrivate::audioThreadStart()
+{
+    startTimers();
+    audioThreadState = Running;
+    AudioOutputUnitStart(audioUnit);
+}
+
+void QAudioOutputPrivate::audioThreadStop()
+{
+    stopTimers();
+    if (audioThreadState.testAndSetAcquire(Running, Stopped))
+        threadFinished.wait(&mutex);
+}
+
+void QAudioOutputPrivate::audioThreadDrain()
+{
+    stopTimers();
+    if (audioThreadState.testAndSetAcquire(Running, Draining))
+        threadFinished.wait(&mutex);
+}
+
+void QAudioOutputPrivate::audioDeviceStop()
+{
+    AudioOutputUnitStop(audioUnit);
+    audioThreadState = Stopped;
+    threadFinished.wakeOne();
+}
+
+void QAudioOutputPrivate::audioDeviceIdle()
+{
+    QMutexLocker    lock(&mutex);
+    if (stateCode == QAudio::ActiveState) {
+        audioDeviceStop();
+
+        errorCode = QAudio::UnderrunError;
+        stateCode = QAudio::IdleState;
+        QMetaObject::invokeMethod(this, "deviceStopped", Qt::QueuedConnection);
+    }
+}
+
+void QAudioOutputPrivate::audioDeviceError()
+{
+    QMutexLocker    lock(&mutex);
+    if (stateCode == QAudio::ActiveState) {
+        audioDeviceStop();
+
+        errorCode = QAudio::IOError;
+        stateCode = QAudio::StopState;
+        QMetaObject::invokeMethod(this, "deviceStopped", Qt::QueuedConnection);
+    }
+}
+
+void QAudioOutputPrivate::startTimers()
+{
+    audioBuffer->startFillTimer();
+    intervalTimer->start();
+}
+
+void QAudioOutputPrivate::stopTimers()
+{
+    audioBuffer->stopFillTimer();
+    intervalTimer->stop();
+}
+
+
+void QAudioOutputPrivate::deviceStopped()
+{
+    intervalTimer->stop();
+    emit stateChanged(stateCode);
+}
+
+void QAudioOutputPrivate::inputReady()
+{
+    QMutexLocker    lock(&mutex);
+    if (stateCode == QAudio::IdleState) {
+        audioThreadStart();
+
+        stateCode = QAudio::ActiveState;
+        errorCode = QAudio::NoError;
+
+        QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
+    }
+}
+
+
+OSStatus QAudioOutputPrivate::renderCallback(void* inRefCon,
+                                    AudioUnitRenderActionFlags* ioActionFlags,
+                                    const AudioTimeStamp* inTimeStamp,
+                                    UInt32 inBusNumber,
+                                    UInt32 inNumberFrames,
+                                    AudioBufferList* ioData)
+{
+    Q_UNUSED(ioActionFlags)
+    Q_UNUSED(inTimeStamp)
+    Q_UNUSED(inBusNumber)
+    Q_UNUSED(inNumberFrames)
+
+    QAudioOutputPrivate* d = static_cast<QAudioOutputPrivate*>(inRefCon);
+
+    const int threadState = d->audioThreadState.fetchAndAddAcquire(0);
+    if (threadState == Stopped) {
+        ioData->mBuffers[0].mDataByteSize = 0;
+        d->audioDeviceStop();
+    }
+    else {
+        const UInt32    bytesPerFrame = d->streamFormat.mBytesPerFrame;
+        qint64          framesRead;
+
+        framesRead = d->audioBuffer->readFrames((char*)ioData->mBuffers[0].mData,
+                                                 ioData->mBuffers[0].mDataByteSize / bytesPerFrame);
+
+        if (framesRead > 0) {
+            ioData->mBuffers[0].mDataByteSize = framesRead * bytesPerFrame;
+            d->totalFrames += framesRead;
+        }
+        else {
+            ioData->mBuffers[0].mDataByteSize = 0;
+            if (framesRead == 0) {
+                if (threadState == Draining)
+                    d->audioDeviceStop();
+                else
+                    d->audioDeviceIdle();
+            }
+            else
+                d->audioDeviceError();
+        }
+    }
+
+    return noErr;
+}
+
+
+QT_END_NAMESPACE
+
+#include "qaudiooutput_mac_p.moc"
+
diff --git a/src/multimedia/audio/qaudiooutput_mac_p.h b/src/multimedia/audio/qaudiooutput_mac_p.h
new file mode 100644
index 0000000..c85cab4
--- /dev/null
+++ b/src/multimedia/audio/qaudiooutput_mac_p.h
@@ -0,0 +1,171 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifndef QAUDIOOUTPUT_MAC_P_H
+#define QAUDIOOUTPUT_MAC_P_H
+
+#include <CoreServices/CoreServices.h>
+#include <CoreAudio/CoreAudio.h>
+#include <AudioUnit/AudioUnit.h>
+#include <AudioToolbox/AudioToolbox.h>
+
+#include <QtCore/qobject.h>
+#include <QtCore/qmutex.h>
+#include <QtCore/qwaitcondition.h>
+#include <QtCore/qtimer.h>
+#include <QtCore/qatomic.h>
+
+#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qaudioformat.h>
+#include <QtMultimedia/qaudioengine.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QIODevice;
+
+namespace
+{
+class QAudioOutputBuffer;
+}
+
+class QAudioOutputPrivate : public QAbstractAudioOutput
+{
+    Q_OBJECT
+
+public:
+    bool            isOpen;
+    int             internalBufferSize;
+    int             periodSizeBytes;
+    qint64          totalFrames;
+    QAudioFormat    audioFormat;
+    QIODevice*      audioIO;
+    AudioDeviceID   audioDeviceId;
+    AudioUnit       audioUnit;
+    Float64         clockFrequency;
+    UInt64          startTime;
+    AudioStreamBasicDescription deviceFormat;
+    AudioStreamBasicDescription streamFormat;
+    QAudioOutputBuffer*   audioBuffer;
+    QAtomicInt      audioThreadState;
+    QWaitCondition  threadFinished;
+    QMutex          mutex;
+    QTimer*         intervalTimer;
+
+    QAudio::Error    errorCode;
+    QAudio::State    stateCode;
+
+    QAudioOutputPrivate(const QByteArray& device, const QAudioFormat& format);
+    ~QAudioOutputPrivate();
+
+    bool open();
+    void close();
+
+    QAudioFormat format() const;
+
+    QIODevice* start(QIODevice* device);
+    void stop();
+    void reset();
+    void suspend();
+    void resume();
+
+    int bytesFree() const;
+    int periodSize() const;
+
+    void setBufferSize(int value);
+    int bufferSize() const;
+
+    void setNotifyInterval(int milliSeconds);
+    int notifyInterval() const;
+
+    qint64 totalTime() const;
+    qint64 clock() const;
+
+    QAudio::Error error() const;
+    QAudio::State state() const;
+
+    void audioThreadStart();
+    void audioThreadStop();
+    void audioThreadDrain();
+
+    void audioDeviceStop();
+    void audioDeviceIdle();
+    void audioDeviceError();
+
+    void startTimers();
+    void stopTimers();
+
+signals:
+    void stateChanged(QAudio::State);
+    void notify();
+
+private slots:
+    void deviceStopped();
+    void inputReady();
+
+private:
+    enum { Running, Draining, Stopped };
+
+    static OSStatus renderCallback(void* inRefCon,
+                                    AudioUnitRenderActionFlags* ioActionFlags,
+                                    const AudioTimeStamp* inTimeStamp,
+                                    UInt32 inBusNumber,
+                                    UInt32 inNumberFrames,
+                                    AudioBufferList* ioData);
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif
diff --git a/src/multimedia/audio/qaudiooutput_win32_p.cpp b/src/multimedia/audio/qaudiooutput_win32_p.cpp
new file mode 100644
index 0000000..f681936
--- /dev/null
+++ b/src/multimedia/audio/qaudiooutput_win32_p.cpp
@@ -0,0 +1,502 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qaudiooutput_win32_p.h"
+
+//#define DEBUG_AUDIO 1
+
+QAudioOutputPrivate::QAudioOutputPrivate(const QByteArray &device, const QAudioFormat& audioFormat):
+    settings(audioFormat)
+{
+    bytesAvailable = 0;
+    buffer_size = 0;
+    period_size = 0;
+    m_device = device;
+    totalTimeValue = 0;
+    intervalTime = 1000;
+    audioBuffer = 0;
+    errorState = QAudio::NoError;
+    deviceState = QAudio::StopState;
+    audioSource = 0;
+    pullMode = true;
+    InitializeCriticalSection(&waveOutCriticalSection);
+}
+
+QAudioOutputPrivate::~QAudioOutputPrivate()
+{
+    close();
+    DeleteCriticalSection(&waveOutCriticalSection);
+}
+
+void CALLBACK QAudioOutputPrivate::waveOutProc( HWAVEOUT hWaveOut, UINT uMsg,
+        DWORD dwInstance, DWORD dwParam1, DWORD dwParam2 )
+{
+    Q_UNUSED(dwParam1)
+    Q_UNUSED(dwParam2)
+    Q_UNUSED(hWaveOut)
+
+    QAudioOutputPrivate* qAudio;
+    qAudio = (QAudioOutputPrivate*)(dwInstance);
+    if(!qAudio)
+        return;
+
+    switch(uMsg) {
+        case WOM_OPEN:
+            qAudio->feedback();
+            break;
+        case WOM_CLOSE:
+            return;
+        case WOM_DONE:
+            EnterCriticalSection(&waveOutCriticalSection);
+            qAudio->waveFreeBlockCount++;
+            if(qAudio->waveFreeBlockCount >= qAudio->buffer_size/qAudio->period_size)
+                qAudio->waveFreeBlockCount = qAudio->buffer_size/qAudio->period_size;
+            LeaveCriticalSection(&waveOutCriticalSection);
+            qAudio->feedback();
+            break;
+        default:
+            return;
+    }
+}
+
+WAVEHDR* QAudioOutputPrivate::allocateBlocks(int size, int count)
+{
+    int i;
+    unsigned char* buffer;
+    WAVEHDR* blocks;
+    DWORD totalBufferSize = (size + sizeof(WAVEHDR))*count;
+
+    if((buffer=(unsigned char*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,
+                    totalBufferSize)) == 0) {
+        qWarning("QAudioOutput: Memory allocation error");
+        return 0;
+    }
+    blocks = (WAVEHDR*)buffer;
+    buffer += sizeof(WAVEHDR)*count;
+    for(i = 0; i < count; i++) {
+        blocks[i].dwBufferLength = size;
+        blocks[i].lpData = (LPSTR)buffer;
+        buffer += size;
+    }
+    return blocks;
+}
+
+void QAudioOutputPrivate::freeBlocks(WAVEHDR* blockArray)
+{
+    HeapFree(GetProcessHeap(), 0, blockArray);
+}
+
+QAudioFormat QAudioOutputPrivate::format() const
+{
+    return settings;
+}
+
+QIODevice* QAudioOutputPrivate::start(QIODevice* device)
+{
+    if(deviceState != QAudio::StopState)
+        close();
+
+    if(!pullMode && audioSource) {
+        delete audioSource;
+    }
+
+    if(device) {
+        //set to pull mode
+        pullMode = true;
+        audioSource = device;
+        deviceState = QAudio::ActiveState;
+    } else {
+        //set to push mode
+        pullMode = false;
+        audioSource = new OutputPrivate(this);
+        audioSource->open(QIODevice::WriteOnly|QIODevice::Unbuffered);
+        deviceState = QAudio::IdleState;
+    }
+
+    if( !open() )
+        return 0;
+
+    emit stateChanged(deviceState);
+
+    return audioSource;
+}
+
+void QAudioOutputPrivate::stop()
+{
+    if(deviceState == QAudio::StopState)
+        return;
+    deviceState = QAudio::StopState;
+    close();
+    if(!pullMode && audioSource) {
+        delete audioSource;
+        audioSource = 0;
+    }
+    emit stateChanged(deviceState);
+}
+
+bool QAudioOutputPrivate::open()
+{
+#ifdef DEBUG_AUDIO
+    QTime now(QTime::currentTime());
+    qDebug()<<now.second()<<"s "<<now.msec()<<"ms :open()";
+#endif
+    if(buffer_size == 0) {
+        // Default buffer size, 200ms, default period size is 40ms
+        buffer_size = settings.frequency()*settings.channels()*(settings.sampleSize()/8)*0.2;
+	period_size = buffer_size/5;
+    } else {
+        period_size = buffer_size/5;
+    }
+    waveBlocks = allocateBlocks(period_size, buffer_size/period_size);
+    waveFreeBlockCount = buffer_size/period_size;
+    waveCurrentBlock = 0;
+
+    if(audioBuffer == 0)
+        audioBuffer = new char[buffer_size];
+
+    timeStamp.restart();
+
+    wfx.nSamplesPerSec = settings.frequency();
+    wfx.wBitsPerSample = settings.sampleSize();
+    wfx.nChannels = settings.channels();
+    wfx.cbSize = 0;
+
+    wfx.wFormatTag = WAVE_FORMAT_PCM;
+    wfx.nBlockAlign = (wfx.wBitsPerSample >> 3) * wfx.nChannels;
+    wfx.nAvgBytesPerSec = wfx.nBlockAlign * wfx.nSamplesPerSec;
+
+    UINT_PTR devId = WAVE_MAPPER;
+
+    WAVEOUTCAPS woc;
+    unsigned long iNumDevs,ii;
+    iNumDevs = waveOutGetNumDevs();
+    for(ii=0;ii<iNumDevs;ii++) {
+        if(waveOutGetDevCaps(ii, &woc, sizeof(WAVEOUTCAPS))
+	    == MMSYSERR_NOERROR) {
+	    QString tmp;
+	    tmp = QString::fromUtf16((const unsigned short*)woc.szPname);
+            if(tmp.compare(tr(m_device)) == 0) {
+	        devId = ii;
+		break;
+	    }
+	}
+    }
+
+    if(waveOutOpen(&hWaveOut, devId, &wfx,
+                (DWORD_PTR)&waveOutProc,
+                (DWORD_PTR) this,
+                CALLBACK_FUNCTION) != MMSYSERR_NOERROR) {
+        errorState = QAudio::OpenError;
+        deviceState = QAudio::StopState;
+        emit stateChanged(deviceState);
+        qWarning("QAudioOutput: open error");
+        return false;
+    }
+
+    totalTimeValue = 0;
+    timeStampOpened.restart();
+
+    errorState = QAudio::NoError;
+    if(pullMode) {
+        deviceState = QAudio::ActiveState;
+        QTimer::singleShot(10, this, SLOT(feedback()));
+    } else
+        deviceState = QAudio::IdleState;
+
+    return true;
+}
+
+void QAudioOutputPrivate::close()
+{
+    if(deviceState == QAudio::StopState)
+        return;
+
+    deviceState = QAudio::StopState;
+    int delay = (buffer_size-bytesFree())*1000/(settings.frequency()
+                  *settings.channels()*(settings.sampleSize()/8));
+    waveOutReset(hWaveOut);
+    Sleep(delay+10);
+
+    freeBlocks(waveBlocks);
+    waveOutClose(hWaveOut);
+    delete [] audioBuffer;
+    audioBuffer = 0;
+    buffer_size = 0;
+}
+
+int QAudioOutputPrivate::bytesFree() const
+{
+    int buf;
+    buf = waveFreeBlockCount*period_size;
+    return buf;
+}
+
+int QAudioOutputPrivate::periodSize() const
+{
+    return period_size;
+}
+
+void QAudioOutputPrivate::setBufferSize(int value)
+{
+    if(deviceState == QAudio::StopState)
+        buffer_size = value;
+}
+
+int QAudioOutputPrivate::bufferSize() const
+{
+    return buffer_size;
+}
+
+void QAudioOutputPrivate::setNotifyInterval(int ms)
+{
+    intervalTime = ms;
+}
+
+int QAudioOutputPrivate::notifyInterval() const
+{
+    return intervalTime;
+}
+
+qint64 QAudioOutputPrivate::totalTime() const
+{
+    return totalTimeValue;
+}
+
+qint64 QAudioOutputPrivate::write( const char *data, qint64 len )
+{
+    // Write out some audio data
+
+    char* p = (char*)data;
+    int l = (int)len;
+
+    WAVEHDR* current;
+    int remain;
+    current = &waveBlocks[waveCurrentBlock];
+    while(l > 0) {
+        if(waveFreeBlockCount==0)
+            break;
+
+        if(current->dwFlags & WHDR_PREPARED)
+            waveOutUnprepareHeader(hWaveOut, current, sizeof(WAVEHDR));
+
+        if(l < period_size)
+            remain = l;
+        else
+            remain = period_size;
+        memcpy(current->lpData, p, remain);
+
+        l -= remain;
+        p += remain;
+        current->dwBufferLength = remain;
+        waveOutPrepareHeader(hWaveOut, current, sizeof(WAVEHDR));
+        waveOutWrite(hWaveOut, current, sizeof(WAVEHDR));
+
+        EnterCriticalSection(&waveOutCriticalSection);
+        waveFreeBlockCount--;
+        LeaveCriticalSection(&waveOutCriticalSection);
+#ifdef DEBUG_AUDIO
+        qDebug("write out l=%d, waveFreeBlockCount=%d",
+                current->dwBufferLength,waveFreeBlockCount);
+#endif
+        totalTimeValue += current->dwBufferLength
+            /(settings.channels()*(settings.sampleSize()/8))
+            *1000000/settings.frequency();;
+        waveCurrentBlock++;
+        waveCurrentBlock %= buffer_size/period_size;
+        current = &waveBlocks[waveCurrentBlock];
+        current->dwUser = 0;
+    }
+    return (len-l);
+}
+
+void QAudioOutputPrivate::resume()
+{
+    if(deviceState == QAudio::SuspendState) {
+        deviceState = QAudio::ActiveState;
+        errorState = QAudio::NoError;
+        waveOutRestart(hWaveOut);
+        QTimer::singleShot(10, this, SLOT(feedback()));
+        emit stateChanged(deviceState);
+    }
+}
+
+void QAudioOutputPrivate::suspend()
+{
+    if(deviceState == QAudio::ActiveState) {
+        waveOutPause(hWaveOut);
+        deviceState = QAudio::SuspendState;
+        errorState = QAudio::NoError;
+        emit stateChanged(deviceState);
+    }
+}
+
+void QAudioOutputPrivate::feedback()
+{
+#ifdef DEBUG_AUDIO
+    QTime now(QTime::currentTime());
+    qDebug()<<now.second()<<"s "<<now.msec()<<"ms :feedback()";
+#endif
+    bytesAvailable = bytesFree();
+
+    if(!(deviceState==QAudio::StopState||deviceState==QAudio::SuspendState)) {
+        if(bytesAvailable >= period_size)
+            QMetaObject::invokeMethod(this, "deviceReady", Qt::QueuedConnection);
+    }
+}
+
+bool QAudioOutputPrivate::deviceReady()
+{
+    if(pullMode) {
+        int i = 0;
+        int chunks = bytesAvailable/period_size;
+#ifdef DEBUG_AUDIO
+        qDebug()<<"deviceReady() avail="<<bytesAvailable<<" bytes, period size="<<period_size<<" bytes";
+        qDebug()<<"deviceReady() no. of chunks that can fit ="<<chunks<<", chunks in bytes ="<<chunks*period_size;
+#endif
+        bool startup = false;
+        if(totalTimeValue == 0)
+	    startup = true;
+
+        if(startup)
+	    waveOutPause(hWaveOut);
+        int input = period_size*chunks;
+        int l = audioSource->read(audioBuffer,input);
+        if(l > 0) {
+            int out= write(audioBuffer,l);
+            if(out > 0)
+                deviceState = QAudio::ActiveState;
+	    if(startup)
+	        waveOutRestart(hWaveOut);
+        } else if(l == 0) {
+            bytesAvailable = bytesFree();
+            if(waveFreeBlockCount == buffer_size/period_size) {
+                errorState = QAudio::UnderrunError;
+                deviceState = QAudio::IdleState;
+                emit stateChanged(deviceState);
+            }
+
+        } else if(i < 0) {
+            bytesAvailable = bytesFree();
+            errorState = QAudio::IOError;
+        }
+    }
+    if(deviceState != QAudio::ActiveState)
+        return true;
+
+    if(timeStamp.elapsed() > intervalTime && intervalTime > 50) {
+        emit notify();
+        timeStamp.restart();
+    }
+
+    return true;
+}
+
+qint64 QAudioOutputPrivate::clock() const
+{ 
+    if(deviceState != QAudio::ActiveState)
+        return 0;
+
+    return timeStampOpened.elapsed();
+}
+
+QAudio::Error QAudioOutputPrivate::error() const
+{
+    return errorState;
+}
+
+QAudio::State QAudioOutputPrivate::state() const
+{
+    return deviceState;
+}
+
+void QAudioOutputPrivate::reset()
+{
+    close();
+}
+
+OutputPrivate::OutputPrivate(QAudioOutputPrivate* audio)
+{
+    audioDevice = qobject_cast<QAudioOutputPrivate*>(audio);
+}
+
+OutputPrivate::~OutputPrivate() {}
+
+qint64 OutputPrivate::readData( char* data, qint64 len)
+{
+    Q_UNUSED(data)
+    Q_UNUSED(len)
+
+    return 0;
+}
+
+qint64 OutputPrivate::writeData(const char* data, qint64 len)
+{
+    int retry = 0;
+    qint64 written = 0;
+
+    if((audioDevice->deviceState == QAudio::ActiveState)
+            ||(audioDevice->deviceState == QAudio::IdleState)) {
+        qint64 l = len;
+        while(written < l) {
+            int chunk = audioDevice->write(data+written,(l-written));
+            if(chunk <= 0)
+                retry++;
+            else
+                written+=chunk;
+
+            if(retry > 10)
+                return written;
+        }
+        audioDevice->deviceState = QAudio::ActiveState;
+    }
+    return written;
+}
diff --git a/src/multimedia/audio/qaudiooutput_win32_p.h b/src/multimedia/audio/qaudiooutput_win32_p.h
new file mode 100644
index 0000000..91f14f5
--- /dev/null
+++ b/src/multimedia/audio/qaudiooutput_win32_p.h
@@ -0,0 +1,154 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtMultimedia module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://www.qtsoftware.com/contact.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifndef QAUDIOOUTPUTWIN_H
+#define QAUDIOOUTPUTWIN_H
+
+#include <windows.h>
+#include <mmsystem.h>
+
+#include <QtCore/qdebug.h>
+#include <QtCore/qtimer.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qstringlist.h>
+#include <QtCore/qdatetime.h>
+
+#include <QtMultimedia/qaudio.h>
+#include <QtMultimedia/qaudiodeviceinfo.h>
+#include <QtMultimedia/qaudioengine.h>
+
+
+static CRITICAL_SECTION waveOutCriticalSection;
+
+class QAudioOutputPrivate : public QAbstractAudioOutput
+{
+    Q_OBJECT
+public:
+    QAudioOutputPrivate(const QByteArray &device, const QAudioFormat& audioFormat);
+    ~QAudioOutputPrivate();
+
+    qint64 write( const char *data, qint64 len );
+
+    QAudioFormat format() const;
+    QIODevice* start(QIODevice* device = 0);
+    void stop();
+    void reset();
+    void suspend();
+    void resume();
+    int bytesFree() const;
+    int periodSize() const;
+    void setBufferSize(int value);
+    int bufferSize() const;
+    void setNotifyInterval(int milliSeconds);
+    int notifyInterval() const;
+    qint64 totalTime() const;
+    qint64 clock() const;
+    QAudio::Error error() const;
+    QAudio::State state() const;
+
+    QIODevice* audioSource;
+    QAudioFormat settings;
+    QAudio::Error errorState;
+    QAudio::State deviceState;
+
+private slots:
+    void feedback();
+    bool deviceReady();
+
+signals:
+    void stateChanged(QAudio::State);
+    void notify();
+
+private:
+    QByteArray m_device;
+    bool resuming;
+    int bytesAvailable;
+    QTime timeStamp;
+    QTime timeStampOpened;
+    qint32 buffer_size;
+    qint32 period_size;
+    qint64 totalTimeValue;
+    bool pullMode;
+    int intervalTime;
+    static void CALLBACK waveOutProc( HWAVEOUT hWaveOut, UINT uMsg,
+            DWORD dwInstance, DWORD dwParam1, DWORD dwParam2 );
+
+    WAVEHDR* allocateBlocks(int size, int count);
+    void freeBlocks(WAVEHDR* blockArray);
+    bool open();
+    void close();
+
+    WAVEFORMATEX wfx;
+    HWAVEOUT hWaveOut;
+    MMRESULT result;
+    WAVEHDR header;
+    WAVEHDR* waveBlocks;
+    volatile int waveFreeBlockCount;
+    int waveCurrentBlock;
+    char* audioBuffer;
+};
+
+class OutputPrivate : public QIODevice
+{
+    Q_OBJECT
+public:
+    OutputPrivate(QAudioOutputPrivate* audio);
+    ~OutputPrivate();
+
+    qint64 readData( char* data, qint64 len);
+    qint64 writeData(const char* data, qint64 len);
+
+private:
+    QAudioOutputPrivate *audioDevice;
+};
+
+#endif