Merge branch 'qt-4.7-from-4.6' of scm.dev.nokia.troll.no:qt/qt-integration into 4.7-integration

* 'qt-4.7-from-4.6' of scm.dev.nokia.troll.no:qt/qt-integration: (65 commits)
  QSslKey: Do not make OpenSSL prompt for a password on stdin
  Typo fix in qtestlib
  Moved Symbian audio backend into QtMultimedia.dll
  Updated Symbian DEF files
  Updated qt.iby
  Fixed filename cases to support building Qt for Symbian in Linux
  Moved softkey "Options" action handling from QMainWindow to QMenuBar.
  HotFix for fluidlauncher default size caused by 6d44dadd.
  Removed compiler warning from qdesktopwidget_s60.cpp.
  Ensure that the entire CLOB can be returned from an Oracle database
  QAudioInput sometimes not writing to QIODevice
  isalpha() is unspecified for values outside uchar and EOF
  Fixed bug in QTransform::type() after using operator/ or operator*.
  Updated WebKit from /home/shausman/src/webkit/trunk to qtwebkit/qtwebkit-4.6 ( 266a6c4f1938dd9edf4a8125faf91c62495e3ce2 )
  Doc: Removed lie that access to QBuffer is unbuffered.
  Minisplitter doesn't paint to the bottom/right
  Support for adding user specified list type content in rss file
  Fixed RSS_RULES statement in application_icon.prf
  Avoid unnecessary memory allocation in the jpeg handler's image detection
  QVarLenghtArray: Call constructor when resizing the array for Movable types.
  ...

15 files changed, 2603 insertions, 9 deletions

diff --git a/src/multimedia/audio/audio.pri b/src/multimedia/audio/audio.pri
index 625b871c..ae28a26 100644
--- a/src/multimedia/audio/audio.pri
+++ b/src/multimedia/audio/audio.pri
@@ -41,6 +41,21 @@ mac {
     !wince*:LIBS += -lwinmm
     wince*:LIBS += -lcoredll
 
+} else:symbian {
+    INCLUDEPATH += /epoc32/include/mmf/common
+    INCLUDEPATH += /epoc32/include/mmf/server
+
+    HEADERS += $$PWD/qaudio_symbian_p.h \
+               $$PWD/qaudiodeviceinfo_symbian_p.h \
+               $$PWD/qaudioinput_symbian_p.h \
+               $$PWD/qaudiooutput_symbian_p.h
+
+    SOURCES += $$PWD/qaudio_symbian_p.cpp \
+               $$PWD/qaudiodeviceinfo_symbian_p.cpp \
+               $$PWD/qaudioinput_symbian_p.cpp \
+               $$PWD/qaudiooutput_symbian_p.cpp
+
+    LIBS += -lmmfdevsound
 } else:unix {
     unix:contains(QT_CONFIG, alsa) {
         linux-*|freebsd-*|openbsd-*:{
diff --git a/src/multimedia/audio/qaudio_symbian_p.cpp b/src/multimedia/audio/qaudio_symbian_p.cpp
new file mode 100644
index 0000000..58e3745
--- /dev/null
+++ b/src/multimedia/audio/qaudio_symbian_p.cpp
@@ -0,0 +1,395 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qaudio_symbian_p.h"
+#include <mmffourcc.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace SymbianAudio {
+
+DevSoundCapabilities::DevSoundCapabilities(CMMFDevSound &devsound,
+                                           QAudio::Mode mode)
+{
+    QT_TRAP_THROWING(constructL(devsound, mode));
+}
+
+DevSoundCapabilities::~DevSoundCapabilities()
+{
+    m_fourCC.Close();
+}
+
+void DevSoundCapabilities::constructL(CMMFDevSound &devsound,
+                                      QAudio::Mode mode)
+{
+    m_caps = devsound.Capabilities();
+
+    TMMFPrioritySettings settings;
+
+    switch (mode) {
+    case QAudio::AudioOutput:
+        settings.iState = EMMFStatePlaying;
+        devsound.GetSupportedInputDataTypesL(m_fourCC, settings);
+        break;
+
+    case QAudio::AudioInput:
+        settings.iState = EMMFStateRecording;
+        devsound.GetSupportedInputDataTypesL(m_fourCC, settings);
+        break;
+
+    default:
+        Q_ASSERT_X(false, Q_FUNC_INFO, "Invalid mode");
+    }
+}
+
+namespace Utils {
+
+//-----------------------------------------------------------------------------
+// Static data
+//-----------------------------------------------------------------------------
+
+// Sample rate / frequency
+
+typedef TMMFSampleRate SampleRateNative;
+typedef int SampleRateQt;
+
+const int SampleRateCount = 12;
+
+const SampleRateNative SampleRateListNative[SampleRateCount] = {
+        EMMFSampleRate8000Hz
+    ,   EMMFSampleRate11025Hz
+    ,   EMMFSampleRate12000Hz
+    ,   EMMFSampleRate16000Hz
+    ,   EMMFSampleRate22050Hz
+    ,   EMMFSampleRate24000Hz
+    ,   EMMFSampleRate32000Hz
+    ,   EMMFSampleRate44100Hz
+    ,   EMMFSampleRate48000Hz
+    ,   EMMFSampleRate64000Hz
+    ,   EMMFSampleRate88200Hz
+    ,   EMMFSampleRate96000Hz
+};
+
+const SampleRateQt SampleRateListQt[SampleRateCount] = {
+        8000
+    ,   11025
+    ,   12000
+    ,   16000
+    ,   22050
+    ,   24000
+    ,   32000
+    ,   44100
+    ,   48000
+    ,   64000
+    ,   88200
+    ,   96000
+};
+
+// Channels
+
+typedef TMMFMonoStereo ChannelsNative;
+typedef int ChannelsQt;
+
+const int ChannelsCount = 2;
+
+const ChannelsNative ChannelsListNative[ChannelsCount] = {
+        EMMFMono
+    ,   EMMFStereo
+};
+
+const ChannelsQt ChannelsListQt[ChannelsCount] = {
+        1
+    ,   2
+};
+
+// Encoding
+
+const int EncodingCount = 6;
+
+const TUint32 EncodingFourCC[EncodingCount] = {
+        KMMFFourCCCodePCM8              // 0
+    ,   KMMFFourCCCodePCMU8             // 1
+    ,   KMMFFourCCCodePCM16             // 2
+    ,   KMMFFourCCCodePCMU16            // 3
+    ,   KMMFFourCCCodePCM16B            // 4
+    ,   KMMFFourCCCodePCMU16B           // 5
+};
+
+// The characterised DevSound API specification states that the iEncoding
+// field in TMMFCapabilities is ignored, and that the FourCC should be used
+// to specify the PCM encoding.
+// See "SGL.GT0287.102 Multimedia DevSound Baseline Compatibility.doc" in the
+// mm_info/mm_docs repository.
+const TMMFSoundEncoding EncodingNative[EncodingCount] = {
+        EMMFSoundEncoding16BitPCM       // 0
+    ,   EMMFSoundEncoding16BitPCM       // 1
+    ,   EMMFSoundEncoding16BitPCM       // 2
+    ,   EMMFSoundEncoding16BitPCM       // 3
+    ,   EMMFSoundEncoding16BitPCM       // 4
+    ,   EMMFSoundEncoding16BitPCM       // 5
+};
+
+
+const int EncodingSampleSize[EncodingCount] = {
+        8                               // 0
+    ,   8                               // 1
+    ,   16                              // 2
+    ,   16                              // 3
+    ,   16                              // 4
+    ,   16                              // 5
+};
+
+const QAudioFormat::Endian EncodingByteOrder[EncodingCount] = {
+        QAudioFormat::LittleEndian      // 0
+    ,   QAudioFormat::LittleEndian      // 1
+    ,   QAudioFormat::LittleEndian      // 2
+    ,   QAudioFormat::LittleEndian      // 3
+    ,   QAudioFormat::BigEndian         // 4
+    ,   QAudioFormat::BigEndian         // 5
+};
+
+const QAudioFormat::SampleType EncodingSampleType[EncodingCount] = {
+        QAudioFormat::SignedInt         // 0
+    ,   QAudioFormat::UnSignedInt       // 1
+    ,   QAudioFormat::SignedInt         // 2
+    ,   QAudioFormat::UnSignedInt       // 3
+    ,   QAudioFormat::SignedInt         // 4
+    ,   QAudioFormat::UnSignedInt       // 5
+};
+
+
+//-----------------------------------------------------------------------------
+// Private functions
+//-----------------------------------------------------------------------------
+
+// Helper functions for implementing parameter conversions
+
+template<typename Input>
+bool findValue(const Input *inputArray, int length, Input input, int &index) {
+    bool result = false;
+    for (int i=0; !result && i<length; ++i)
+        if (inputArray[i] == input) {
+            index = i;
+            result = true;
+        }
+    return result;
+}
+
+template<typename Input, typename Output>
+bool convertValue(const Input *inputArray, const Output *outputArray,
+    int length, Input input, Output &output) {
+    int index;
+    const bool result = findValue<Input>(inputArray, length, input, index);
+    if (result)
+        output = outputArray[index];
+    return result;
+}
+
+/**
+ * Macro which is used to generate the implementation of the conversion
+ * functions.  The implementation is just a wrapper around the templated
+ * convertValue function, e.g.
+ *
+ * CONVERSION_FUNCTION_IMPL(SampleRate, Qt, Native)
+ *
+ * expands to
+ *
+ * bool SampleRateQtToNative(int input, TMMFSampleRate &output) {
+ *      return convertValue<SampleRateQt, SampleRateNative>
+ *          (SampleRateListQt, SampleRateListNative, SampleRateCount,
+ *          input, output);
+ * }
+ */
+#define CONVERSION_FUNCTION_IMPL(FieldLc, Field, Input, Output)               \
+bool FieldLc##Input##To##Output(Field##Input input, Field##Output &output) {  \
+    return convertValue<Field##Input, Field##Output>(Field##List##Input,      \
+        Field##List##Output, Field##Count, input, output);                    \
+}
+
+//-----------------------------------------------------------------------------
+// Local helper functions
+//-----------------------------------------------------------------------------
+
+CONVERSION_FUNCTION_IMPL(sampleRate, SampleRate, Qt, Native)
+CONVERSION_FUNCTION_IMPL(sampleRate, SampleRate, Native, Qt)
+CONVERSION_FUNCTION_IMPL(channels, Channels, Qt, Native)
+CONVERSION_FUNCTION_IMPL(channels, Channels, Native, Qt)
+
+bool sampleInfoQtToNative(int inputSampleSize,
+                          QAudioFormat::Endian inputByteOrder,
+                          QAudioFormat::SampleType inputSampleType,
+                          TUint32 &outputFourCC,
+                          TMMFSoundEncoding &outputEncoding) {
+
+    bool found = false;
+
+    for (int i=0; i<EncodingCount && !found; ++i) {
+        if (    EncodingSampleSize[i] == inputSampleSize
+            &&  EncodingByteOrder[i] == inputByteOrder
+            &&  EncodingSampleType[i] == inputSampleType) {
+            outputFourCC = EncodingFourCC[i];
+            outputEncoding = EncodingNative[i]; // EMMFSoundEncoding16BitPCM
+            found = true;
+        }
+    }
+
+    return found;
+}
+
+//-----------------------------------------------------------------------------
+// Public functions
+//-----------------------------------------------------------------------------
+
+void capabilitiesNativeToQt(const DevSoundCapabilities &caps,
+                            QList<int> &frequencies,
+                            QList<int> &channels,
+                            QList<int> &sampleSizes,
+                            QList<QAudioFormat::Endian> &byteOrders,
+                            QList<QAudioFormat::SampleType> &sampleTypes) {
+
+    frequencies.clear();
+    sampleSizes.clear();
+    byteOrders.clear();
+    sampleTypes.clear();
+    channels.clear();
+
+    for (int i=0; i<SampleRateCount; ++i)
+        if (caps.caps().iRate & SampleRateListNative[i])
+            frequencies += SampleRateListQt[i];
+
+    for (int i=0; i<ChannelsCount; ++i)
+        if (caps.caps().iChannels & ChannelsListNative[i])
+            channels += ChannelsListQt[i];
+
+    for (int i=0; i<EncodingCount; ++i) {
+        if (caps.fourCC().Find(EncodingFourCC[i]) != KErrNotFound) {
+            sampleSizes += EncodingSampleSize[i];
+            byteOrders += EncodingByteOrder[i];
+            sampleTypes += EncodingSampleType[i];
+        }
+    }
+
+}
+
+bool isFormatSupported(const QAudioFormat &formatQt,
+                       const DevSoundCapabilities &caps) {
+    TMMFCapabilities formatNative;
+    TUint32 fourCC;
+
+    bool result = false;
+    if (formatQt.codec() == "audio/pcm" &&
+        formatQtToNative(formatQt, fourCC, formatNative)) {
+        result =
+                (formatNative.iRate & caps.caps().iRate)
+            &&  (formatNative.iChannels & caps.caps().iChannels)
+            &&  (caps.fourCC().Find(fourCC) != KErrNotFound);
+    }
+    return result;
+}
+
+bool formatQtToNative(const QAudioFormat &inputFormat,
+                      TUint32 &outputFourCC,
+                      TMMFCapabilities &outputFormat) {
+
+    bool result = false;
+
+    // Need to use temporary variables because TMMFCapabilities fields are all
+    // TInt, rather than MMF enumerated types.
+    TMMFSampleRate outputSampleRate;
+    TMMFMonoStereo outputChannels;
+    TMMFSoundEncoding outputEncoding;
+
+    if (inputFormat.codec() == "audio/pcm") {
+        result =
+                sampleRateQtToNative(inputFormat.frequency(), outputSampleRate)
+            &&  channelsQtToNative(inputFormat.channels(), outputChannels)
+            &&  sampleInfoQtToNative(inputFormat.sampleSize(),
+                                     inputFormat.byteOrder(),
+                                     inputFormat.sampleType(),
+                                     outputFourCC,
+                                     outputEncoding);
+    }
+
+    if (result) {
+        outputFormat.iRate = outputSampleRate;
+        outputFormat.iChannels = outputChannels;
+        outputFormat.iEncoding = outputEncoding;
+    }
+
+    return result;
+}
+
+QAudio::State stateNativeToQt(State nativeState,
+                              QAudio::State initializingState)
+{
+    switch (nativeState) {
+    case ClosedState:
+        return QAudio::StoppedState;
+    case InitializingState:
+        return initializingState;
+    case ActiveState:
+        return QAudio::ActiveState;
+    case IdleState:
+        return QAudio::IdleState;
+    case SuspendedState:
+        return QAudio::SuspendedState;
+    default:
+        Q_ASSERT_X(false, Q_FUNC_INFO, "Invalid state");
+        return QAudio::StoppedState; // suppress compiler warning
+    }
+}
+
+qint64 bytesToSamples(const QAudioFormat &format, qint64 length)
+{
+    return length / ((format.sampleSize() / 8) * format.channels());
+}
+
+qint64 samplesToBytes(const QAudioFormat &format, qint64 samples)
+{
+    return samples * (format.sampleSize() / 8) * format.channels();
+}
+
+} // namespace Utils
+} // namespace SymbianAudio
+
+QT_END_NAMESPACE
+
+
diff --git a/src/multimedia/audio/qaudio_symbian_p.h b/src/multimedia/audio/qaudio_symbian_p.h
new file mode 100644
index 0000000..d5238b4
--- /dev/null
+++ b/src/multimedia/audio/qaudio_symbian_p.h
@@ -0,0 +1,156 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  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_SYMBIAN_P_H
+#define QAUDIO_SYMBIAN_P_H
+
+#include <QtCore/qnamespace.h>
+#include <QtMultimedia/qaudioformat.h>
+#include <QtMultimedia/qaudio.h>
+#include <sounddevice.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace SymbianAudio {
+
+/**
+ * Default values used by audio input and output classes, when underlying
+ * DevSound instance has not yet been created.
+ */
+
+const int DefaultBufferSize = 4096; // bytes
+const int DefaultNotifyInterval = 1000; // ms
+
+/**
+ * Enumeration used to track state of internal DevSound instances.
+ * Values are translated to the corresponding QAudio::State values by
+ * SymbianAudio::Utils::stateNativeToQt.
+ */
+enum State {
+        ClosedState
+    ,   InitializingState
+    ,   ActiveState
+    ,   IdleState
+    ,   SuspendedState
+};
+
+/*
+ * Helper class for querying DevSound codec / format support
+ */
+class DevSoundCapabilities {
+public:
+    DevSoundCapabilities(CMMFDevSound &devsound, QAudio::Mode mode);
+    ~DevSoundCapabilities();
+
+    const RArray<TFourCC>& fourCC() const   { return m_fourCC; }
+    const TMMFCapabilities& caps() const    { return m_caps; }
+
+private:
+    void constructL(CMMFDevSound &devsound, QAudio::Mode mode);
+
+private:
+    RArray<TFourCC> m_fourCC;
+    TMMFCapabilities m_caps;
+};
+
+namespace Utils {
+
+/**
+ * Convert native audio capabilities to QAudio lists.
+ */
+void capabilitiesNativeToQt(const DevSoundCapabilities &caps,
+                            QList<int> &frequencies,
+                            QList<int> &channels,
+                            QList<int> &sampleSizes,
+                            QList<QAudioFormat::Endian> &byteOrders,
+                            QList<QAudioFormat::SampleType> &sampleTypes);
+
+/**
+ * Check whether format is supported.
+ */
+bool isFormatSupported(const QAudioFormat &format,
+                       const DevSoundCapabilities &caps);
+
+/**
+ * Convert QAudioFormat to native format types.
+ *
+ * Note that, despite the name, DevSound uses TMMFCapabilities to specify
+ * single formats as well as capabilities.
+ *
+ * Note that this function does not modify outputFormat.iBufferSize.
+ */
+bool formatQtToNative(const QAudioFormat &inputFormat,
+                      TUint32 &outputFourCC,
+                      TMMFCapabilities &outputFormat);
+
+/**
+ * Convert internal states to QAudio states.
+ */
+QAudio::State stateNativeToQt(State nativeState,
+                              QAudio::State initializingState);
+
+/**
+ * Convert data length to number of samples.
+ */
+qint64 bytesToSamples(const QAudioFormat &format, qint64 length);
+
+/**
+ * Convert number of samples to data length.
+ */
+qint64 samplesToBytes(const QAudioFormat &format, qint64 samples);
+
+} // namespace Utils
+} // namespace SymbianAudio
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/multimedia/audio/qaudiodevicefactory.cpp b/src/multimedia/audio/qaudiodevicefactory.cpp
index 459b7f5..4f45110 100644
--- a/src/multimedia/audio/qaudiodevicefactory.cpp
+++ b/src/multimedia/audio/qaudiodevicefactory.cpp
@@ -58,6 +58,10 @@
 #include "qaudiodeviceinfo_alsa_p.h"
 #include "qaudiooutput_alsa_p.h"
 #include "qaudioinput_alsa_p.h"
+#elif defined(Q_OS_SYMBIAN)
+#include "qaudiodeviceinfo_symbian_p.h"
+#include "qaudiooutput_symbian_p.h"
+#include "qaudioinput_symbian_p.h"
 #endif
 #endif
 
@@ -128,7 +132,7 @@ QList<QAudioDeviceInfo> QAudioDeviceFactory::availableDevices(QAudio::Mode mode)
 {
     QList<QAudioDeviceInfo> devices;
 #ifndef QT_NO_AUDIO_BACKEND
-#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA))
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))
     foreach (const QByteArray &handle, QAudioDeviceInfoInternal::availableDevices(mode))
         devices << QAudioDeviceInfo(QLatin1String("builtin"), handle, mode);
 #endif
@@ -158,7 +162,7 @@ QAudioDeviceInfo QAudioDeviceFactory::defaultInputDevice()
             return QAudioDeviceInfo(QLatin1String("default"), list.at(0), QAudio::AudioInput);
     }
 #ifndef QT_NO_AUDIO_BACKEND
-#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA))
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))
     return QAudioDeviceInfo(QLatin1String("builtin"), QAudioDeviceInfoInternal::defaultInputDevice(), QAudio::AudioInput);
 #endif
 #endif
@@ -175,7 +179,7 @@ QAudioDeviceInfo QAudioDeviceFactory::defaultOutputDevice()
             return QAudioDeviceInfo(QLatin1String("default"), list.at(0), QAudio::AudioOutput);
     }
 #ifndef QT_NO_AUDIO_BACKEND
-#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA))
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))
     return QAudioDeviceInfo(QLatin1String("builtin"), QAudioDeviceInfoInternal::defaultOutputDevice(), QAudio::AudioOutput);
 #endif
 #endif
@@ -187,7 +191,7 @@ QAbstractAudioDeviceInfo* QAudioDeviceFactory::audioDeviceInfo(const QString &re
     QAbstractAudioDeviceInfo *rc = 0;
 
 #ifndef QT_NO_AUDIO_BACKEND
-#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA))
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))
     if (realm == QLatin1String("builtin"))
         return new QAudioDeviceInfoInternal(handle, mode);
 #endif
@@ -216,7 +220,7 @@ QAbstractAudioInput* QAudioDeviceFactory::createInputDevice(QAudioDeviceInfo con
     if (deviceInfo.isNull())
         return new QNullInputDevice();
 #ifndef QT_NO_AUDIO_BACKEND
-#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA))
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))
     if (deviceInfo.realm() == QLatin1String("builtin"))
         return new QAudioInputPrivate(deviceInfo.handle(), format);
 #endif
@@ -235,7 +239,7 @@ QAbstractAudioOutput* QAudioDeviceFactory::createOutputDevice(QAudioDeviceInfo c
     if (deviceInfo.isNull())
         return new QNullOutputDevice();
 #ifndef QT_NO_AUDIO_BACKEND
-#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA))
+#if (defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(HAS_ALSA) || defined(Q_OS_SYMBIAN))
     if (deviceInfo.realm() == QLatin1String("builtin"))
         return new QAudioOutputPrivate(deviceInfo.handle(), format);
 #endif
diff --git a/src/multimedia/audio/qaudiodeviceinfo_symbian_p.cpp b/src/multimedia/audio/qaudiodeviceinfo_symbian_p.cpp
new file mode 100644
index 0000000..36284d3
--- /dev/null
+++ b/src/multimedia/audio/qaudiodeviceinfo_symbian_p.cpp
@@ -0,0 +1,200 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qaudiodeviceinfo_symbian_p.h"
+#include "qaudio_symbian_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QAudioDeviceInfoInternal::QAudioDeviceInfoInternal(QByteArray device,
+                                               QAudio::Mode mode)
+    :   m_deviceName(QLatin1String(device))
+    ,   m_mode(mode)
+    ,   m_updated(false)
+{
+    QT_TRAP_THROWING(m_devsound.reset(CMMFDevSound::NewL()));
+}
+
+QAudioDeviceInfoInternal::~QAudioDeviceInfoInternal()
+{
+
+}
+
+QAudioFormat QAudioDeviceInfoInternal::preferredFormat() const
+{
+    QAudioFormat format;
+    switch (m_mode) {
+    case QAudio::AudioOutput:
+        format.setFrequency(44100);
+        format.setChannels(2);
+        format.setSampleSize(16);
+        format.setByteOrder(QAudioFormat::LittleEndian);
+        format.setSampleType(QAudioFormat::SignedInt);
+        format.setCodec(QLatin1String("audio/pcm"));
+        break;
+
+    case QAudio::AudioInput:
+        format.setFrequency(8000);
+        format.setChannels(1);
+        format.setSampleSize(16);
+        format.setByteOrder(QAudioFormat::LittleEndian);
+        format.setSampleType(QAudioFormat::SignedInt);
+        format.setCodec(QLatin1String("audio/pcm"));
+        break;
+
+    default:
+        Q_ASSERT_X(false, Q_FUNC_INFO, "Invalid mode");
+    }
+
+    if (!isFormatSupported(format)) {
+        if (m_frequencies.size())
+            format.setFrequency(m_frequencies[0]);
+        if (m_channels.size())
+            format.setChannels(m_channels[0]);
+        if (m_sampleSizes.size())
+            format.setSampleSize(m_sampleSizes[0]);
+        if (m_byteOrders.size())
+            format.setByteOrder(m_byteOrders[0]);
+        if (m_sampleTypes.size())
+            format.setSampleType(m_sampleTypes[0]);
+    }
+
+    return format;
+}
+
+bool QAudioDeviceInfoInternal::isFormatSupported(
+                                 const QAudioFormat &format) const
+{
+    getSupportedFormats();
+    const bool supported =
+            m_codecs.contains(format.codec())
+        &&  m_frequencies.contains(format.frequency())
+        &&  m_channels.contains(format.channels())
+        &&  m_sampleSizes.contains(format.sampleSize())
+        &&  m_byteOrders.contains(format.byteOrder())
+        &&  m_sampleTypes.contains(format.sampleType());
+
+    return supported;
+}
+
+QAudioFormat QAudioDeviceInfoInternal::nearestFormat(const QAudioFormat &format) const
+{
+    if (isFormatSupported(format))
+        return format;
+    else
+        return preferredFormat();
+}
+
+QString QAudioDeviceInfoInternal::deviceName() const
+{
+    return m_deviceName;
+}
+
+QStringList QAudioDeviceInfoInternal::codecList()
+{
+    getSupportedFormats();
+    return m_codecs;
+}
+
+QList<int> QAudioDeviceInfoInternal::frequencyList()
+{
+    getSupportedFormats();
+    return m_frequencies;
+}
+
+QList<int> QAudioDeviceInfoInternal::channelsList()
+{
+    getSupportedFormats();
+    return m_channels;
+}
+
+QList<int> QAudioDeviceInfoInternal::sampleSizeList()
+{
+    getSupportedFormats();
+    return m_sampleSizes;
+}
+
+QList<QAudioFormat::Endian> QAudioDeviceInfoInternal::byteOrderList()
+{
+    getSupportedFormats();
+    return m_byteOrders;
+}
+
+QList<QAudioFormat::SampleType> QAudioDeviceInfoInternal::sampleTypeList()
+{
+    getSupportedFormats();
+    return m_sampleTypes;
+}
+
+QByteArray QAudioDeviceInfoInternal::defaultInputDevice()
+{
+    return QByteArray("default");
+}
+
+QByteArray QAudioDeviceInfoInternal::defaultOutputDevice()
+{
+    return QByteArray("default");
+}
+
+QList<QByteArray> QAudioDeviceInfoInternal::availableDevices(QAudio::Mode)
+{
+    QList<QByteArray> result;
+    result += QByteArray("default");
+    return result;
+}
+
+void QAudioDeviceInfoInternal::getSupportedFormats() const
+{
+    if (!m_updated) {
+        QScopedPointer<SymbianAudio::DevSoundCapabilities> caps(
+            new SymbianAudio::DevSoundCapabilities(*m_devsound, m_mode));
+
+        SymbianAudio::Utils::capabilitiesNativeToQt(*caps,
+            m_frequencies, m_channels, m_sampleSizes,
+            m_byteOrders, m_sampleTypes);
+
+        m_codecs.append(QLatin1String("audio/pcm"));
+
+        m_updated = true;
+    }
+}
+
+QT_END_NAMESPACE
diff --git a/src/multimedia/audio/qaudiodeviceinfo_symbian_p.h b/src/multimedia/audio/qaudiodeviceinfo_symbian_p.h
new file mode 100644
index 0000000..89e539f
--- /dev/null
+++ b/src/multimedia/audio/qaudiodeviceinfo_symbian_p.h
@@ -0,0 +1,107 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  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 QAUDIODEVICEINFO_SYMBIAN_P_H
+#define QAUDIODEVICEINFO_SYMBIAN_P_H
+
+#include <QtMultimedia/qaudioengine.h>
+#include <sounddevice.h>
+
+QT_BEGIN_NAMESPACE
+
+class QAudioDeviceInfoInternal
+    :   public QAbstractAudioDeviceInfo
+{
+    Q_OBJECT
+
+public:
+    QAudioDeviceInfoInternal(QByteArray device, QAudio::Mode mode);
+    ~QAudioDeviceInfoInternal();
+
+    // QAbstractAudioDeviceInfo
+    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> availableDevices(QAudio::Mode);
+
+private:
+    void getSupportedFormats() const;
+
+private:
+    QScopedPointer<CMMFDevSound> m_devsound;
+
+    QString m_deviceName;
+    QAudio::Mode m_mode;
+
+    // Mutable to allow lazy initialization when called from const-qualified
+    // public functions (isFormatSupported, nearestFormat)
+    mutable bool m_updated;
+    mutable QStringList m_codecs;
+    mutable QList<int> m_frequencies;
+    mutable QList<int> m_channels;
+    mutable QList<int> m_sampleSizes;
+    mutable QList<QAudioFormat::Endian> m_byteOrders;
+    mutable QList<QAudioFormat::SampleType> m_sampleTypes;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/multimedia/audio/qaudioinput.cpp b/src/multimedia/audio/qaudioinput.cpp
index fd892dd..10bab01 100644
--- a/src/multimedia/audio/qaudioinput.cpp
+++ b/src/multimedia/audio/qaudioinput.cpp
@@ -95,7 +95,7 @@ QT_BEGIN_NAMESPACE
       format.setByteOrder(QAudioFormat::LittleEndian);
       format.setSampleType(QAudioFormat::UnSignedInt);
 
-      if (QAudioDeviceInfo info(QAudioDeviceInfo::defaultInputDevice());
+      QAudioDeviceInfo info = QAudioDeviceInfo::defaultInputDevice();
       if (!info.isFormatSupported(format)) {
           qWarning()<<"default format not supported try to use nearest";
           format = info.nearestFormat(format);
diff --git a/src/multimedia/audio/qaudioinput_alsa_p.cpp b/src/multimedia/audio/qaudioinput_alsa_p.cpp
index 6010f3c..ead9995 100644
--- a/src/multimedia/audio/qaudioinput_alsa_p.cpp
+++ b/src/multimedia/audio/qaudioinput_alsa_p.cpp
@@ -121,6 +121,11 @@ int QAudioInputPrivate::xrun_recovery(int err)
         err = snd_pcm_prepare(handle);
         if(err < 0)
             reset = true;
+        else {
+            bytesAvailable = bytesReady();
+            if (bytesAvailable <= 0)
+                reset = true;
+        }
 
     } else if((err == -ESTRPIPE)||(err == -EIO)) {
         errorState = QAudio::IOError;
@@ -443,6 +448,7 @@ int QAudioInputPrivate::bytesReady() const
     if(deviceState != QAudio::ActiveState && deviceState != QAudio::IdleState)
         return 0;
     int frames = snd_pcm_avail_update(handle);
+    if (frames < 0) return frames;
     if((int)frames > (int)buffer_frames)
         frames = buffer_frames;
 
@@ -459,6 +465,20 @@ qint64 QAudioInputPrivate::read(char* data, qint64 len)
 
     bytesAvailable = bytesReady();
 
+    if (bytesAvailable < 0) {
+        // bytesAvailable as negative is error code, try to recover from it.
+        xrun_recovery(bytesAvailable);
+        bytesAvailable = bytesReady();
+        if (bytesAvailable < 0) {
+            // recovery failed must stop and set error.
+            close();
+            errorState = QAudio::IOError;
+            deviceState = QAudio::StoppedState;
+            emit stateChanged(deviceState);
+            return 0;
+        }
+    }
+
     int count=0, err = 0;
     while(count < 5) {
         int chunks = bytesAvailable/period_size;
@@ -588,7 +608,11 @@ int QAudioInputPrivate::notifyInterval() const
 
 qint64 QAudioInputPrivate::processedUSecs() const
 {
-    return qint64(1000000) * totalTimeValue / settings.frequency();
+    qint64 result = qint64(1000000) * totalTimeValue /
+        (settings.channels()*(settings.sampleSize()/8)) /
+        settings.frequency();
+
+    return result;
 }
 
 void QAudioInputPrivate::suspend()
diff --git a/src/multimedia/audio/qaudioinput_mac_p.cpp b/src/multimedia/audio/qaudioinput_mac_p.cpp
index bd2de52..f394ca4 100644
--- a/src/multimedia/audio/qaudioinput_mac_p.cpp
+++ b/src/multimedia/audio/qaudioinput_mac_p.cpp
@@ -229,6 +229,7 @@ public:
                         QObject* parent):
         QObject(parent),
         m_deviceError(false),
+        m_audioConverter(0),
         m_inputFormat(inputFormat),
         m_outputFormat(outputFormat)
     {
diff --git a/src/multimedia/audio/qaudioinput_symbian_p.cpp b/src/multimedia/audio/qaudioinput_symbian_p.cpp
new file mode 100644
index 0000000..52daa88
--- /dev/null
+++ b/src/multimedia/audio/qaudioinput_symbian_p.cpp
@@ -0,0 +1,594 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qaudioinput_symbian_p.h"
+
+QT_BEGIN_NAMESPACE
+
+//-----------------------------------------------------------------------------
+// Constants
+//-----------------------------------------------------------------------------
+
+const int PushInterval = 50; // ms
+
+
+//-----------------------------------------------------------------------------
+// Private class
+//-----------------------------------------------------------------------------
+
+SymbianAudioInputPrivate::SymbianAudioInputPrivate(
+                              QAudioInputPrivate *audioDevice)
+    :   m_audioDevice(audioDevice)
+{
+
+}
+
+SymbianAudioInputPrivate::~SymbianAudioInputPrivate()
+{
+
+}
+
+qint64 SymbianAudioInputPrivate::readData(char *data, qint64 len)
+{
+    qint64 totalRead = 0;
+
+    if (m_audioDevice->state() == QAudio::ActiveState ||
+        m_audioDevice->state() == QAudio::IdleState) {
+
+        while (totalRead < len) {
+            const qint64 read = m_audioDevice->read(data + totalRead,
+                                                    len - totalRead);
+            if (read > 0)
+                totalRead += read;
+            else
+                break;
+        }
+    }
+
+    return totalRead;
+}
+
+qint64 SymbianAudioInputPrivate::writeData(const char *data, qint64 len)
+{
+    Q_UNUSED(data)
+    Q_UNUSED(len)
+    return 0;
+}
+
+void SymbianAudioInputPrivate::dataReady()
+{
+    emit readyRead();
+}
+
+
+//-----------------------------------------------------------------------------
+// Public functions
+//-----------------------------------------------------------------------------
+
+QAudioInputPrivate::QAudioInputPrivate(const QByteArray &device,
+                                     const QAudioFormat &format)
+    :   m_device(device)
+    ,   m_format(format)
+    ,   m_clientBufferSize(SymbianAudio::DefaultBufferSize)
+    ,   m_notifyInterval(SymbianAudio::DefaultNotifyInterval)
+    ,   m_notifyTimer(new QTimer(this))
+    ,   m_error(QAudio::NoError)
+    ,   m_internalState(SymbianAudio::ClosedState)
+    ,   m_externalState(QAudio::StoppedState)
+    ,   m_pullMode(false)
+    ,   m_sink(0)
+    ,   m_pullTimer(new QTimer(this))
+    ,   m_devSoundBuffer(0)
+    ,   m_devSoundBufferSize(0)
+    ,   m_totalBytesReady(0)
+    ,   m_devSoundBufferPos(0)
+    ,   m_totalSamplesRecorded(0)
+{
+    connect(m_notifyTimer.data(), SIGNAL(timeout()), this, SIGNAL(notify()));
+
+    SymbianAudio::Utils::formatQtToNative(m_format, m_nativeFourCC,
+                                          m_nativeFormat);
+
+    m_pullTimer->setInterval(PushInterval);
+    connect(m_pullTimer.data(), SIGNAL(timeout()), this, SLOT(pullData()));
+}
+
+QAudioInputPrivate::~QAudioInputPrivate()
+{
+    close();
+}
+
+QIODevice* QAudioInputPrivate::start(QIODevice *device)
+{
+    stop();
+
+    open();
+    if (SymbianAudio::ClosedState != m_internalState) {
+        if (device) {
+            m_pullMode = true;
+            m_sink = device;
+        } else {
+            m_sink = new SymbianAudioInputPrivate(this);
+            m_sink->open(QIODevice::ReadOnly | QIODevice::Unbuffered);
+        }
+
+        m_elapsed.restart();
+    }
+
+    return m_sink;
+}
+
+void QAudioInputPrivate::stop()
+{
+    close();
+}
+
+void QAudioInputPrivate::reset()
+{
+    m_totalSamplesRecorded += getSamplesRecorded();
+    m_devSound->Stop();
+    startRecording();
+}
+
+void QAudioInputPrivate::suspend()
+{
+    if (SymbianAudio::ActiveState == m_internalState
+        || SymbianAudio::IdleState == m_internalState) {
+        m_notifyTimer->stop();
+        m_pullTimer->stop();
+        m_devSound->Pause();
+        const qint64 samplesRecorded = getSamplesRecorded();
+        m_totalSamplesRecorded += samplesRecorded;
+
+        if (m_devSoundBuffer) {
+            m_devSoundBufferQ.append(m_devSoundBuffer);
+            m_devSoundBuffer = 0;
+        }
+
+        setState(SymbianAudio::SuspendedState);
+    }
+}
+
+void QAudioInputPrivate::resume()
+{
+    if (SymbianAudio::SuspendedState == m_internalState)
+        startDataTransfer();
+}
+
+int QAudioInputPrivate::bytesReady() const
+{
+    Q_ASSERT(m_devSoundBufferPos <= m_totalBytesReady);
+    return m_totalBytesReady - m_devSoundBufferPos;
+}
+
+int QAudioInputPrivate::periodSize() const
+{
+    return bufferSize();
+}
+
+void QAudioInputPrivate::setBufferSize(int value)
+{
+    // Note that DevSound does not allow its client to specify the buffer size.
+    // This functionality is available via custom interfaces, but since these
+    // cannot be guaranteed to work across all DevSound implementations, we
+    // do not use them here.
+    // In order to comply with the expected bevahiour of QAudioInput, we store
+    // the value and return it from bufferSize(), but the underlying DevSound
+    // buffer size remains unchanged.
+    if (value > 0)
+        m_clientBufferSize = value;
+}
+
+int QAudioInputPrivate::bufferSize() const
+{
+    return m_devSoundBufferSize ? m_devSoundBufferSize : m_clientBufferSize;
+}
+
+void QAudioInputPrivate::setNotifyInterval(int ms)
+{
+    if (ms > 0) {
+        const int oldNotifyInterval = m_notifyInterval;
+        m_notifyInterval = ms;
+        if (m_notifyTimer->isActive() && ms != oldNotifyInterval)
+            m_notifyTimer->start(m_notifyInterval);
+    }
+}
+
+int QAudioInputPrivate::notifyInterval() const
+{
+    return m_notifyInterval;
+}
+
+qint64 QAudioInputPrivate::processedUSecs() const
+{
+    int samplesPlayed = 0;
+    if (m_devSound && SymbianAudio::SuspendedState != m_internalState)
+        samplesPlayed = getSamplesRecorded();
+
+    // Protect against division by zero
+    Q_ASSERT_X(m_format.frequency() > 0, Q_FUNC_INFO, "Invalid frequency");
+
+    const qint64 result = qint64(1000000) *
+                          (samplesPlayed + m_totalSamplesRecorded)
+                        / m_format.frequency();
+
+    return result;
+}
+
+qint64 QAudioInputPrivate::elapsedUSecs() const
+{
+    const qint64 result = (QAudio::StoppedState == state()) ?
+                              0 : m_elapsed.elapsed() * 1000;
+    return result;
+}
+
+QAudio::Error QAudioInputPrivate::error() const
+{
+    return m_error;
+}
+
+QAudio::State QAudioInputPrivate::state() const
+{
+    return m_externalState;
+}
+
+QAudioFormat QAudioInputPrivate::format() const
+{
+    return m_format;
+}
+
+//-----------------------------------------------------------------------------
+// MDevSoundObserver implementation
+//-----------------------------------------------------------------------------
+
+void QAudioInputPrivate::InitializeComplete(TInt aError)
+{
+    Q_ASSERT_X(SymbianAudio::InitializingState == m_internalState,
+        Q_FUNC_INFO, "Invalid state");
+
+    if (KErrNone == aError)
+        startRecording();
+}
+
+void QAudioInputPrivate::ToneFinished(TInt aError)
+{
+    Q_UNUSED(aError)
+    // This class doesn't use DevSound's tone playback functions, so should
+    // never receive this callback.
+    Q_ASSERT_X(false, Q_FUNC_INFO, "Unexpected callback");
+}
+
+void QAudioInputPrivate::BufferToBeFilled(CMMFBuffer *aBuffer)
+{
+    Q_UNUSED(aBuffer)
+    // This class doesn't use DevSound in play mode, so should never receive
+    // this callback.
+    Q_ASSERT_X(false, Q_FUNC_INFO, "Unexpected callback");
+}
+
+void QAudioInputPrivate::PlayError(TInt aError)
+{
+    Q_UNUSED(aError)
+    // This class doesn't use DevSound in play mode, so should never receive
+    // this callback.
+    Q_ASSERT_X(false, Q_FUNC_INFO, "Unexpected callback");
+}
+
+void QAudioInputPrivate::BufferToBeEmptied(CMMFBuffer *aBuffer)
+{
+    // Following receipt of this callback, DevSound should not provide another
+    // buffer until we have returned the current one.
+    Q_ASSERT_X(!m_devSoundBuffer, Q_FUNC_INFO, "Buffer already held");
+
+    CMMFDataBuffer *const buffer = static_cast<CMMFDataBuffer*>(aBuffer);
+
+    if (!m_devSoundBufferSize)
+        m_devSoundBufferSize = buffer->Data().MaxLength();
+
+    m_totalBytesReady += buffer->Data().Length();
+
+    if (SymbianAudio::SuspendedState == m_internalState) {
+        m_devSoundBufferQ.append(buffer);
+    } else {
+        // Will be returned to DevSound by bufferEmptied().
+        m_devSoundBuffer = buffer;
+        m_devSoundBufferPos = 0;
+
+        if (bytesReady() && !m_pullMode)
+            pushData();
+    }
+}
+
+void QAudioInputPrivate::RecordError(TInt aError)
+{
+    Q_UNUSED(aError)
+    setError(QAudio::IOError);
+}
+
+void QAudioInputPrivate::ConvertError(TInt aError)
+{
+    Q_UNUSED(aError)
+    // This class doesn't use DevSound's format conversion functions, so
+    // should never receive this callback.
+    Q_ASSERT_X(false, Q_FUNC_INFO, "Unexpected callback");
+}
+
+void QAudioInputPrivate::DeviceMessage(TUid aMessageType, const TDesC8 &aMsg)
+{
+    Q_UNUSED(aMessageType)
+    Q_UNUSED(aMsg)
+    // Ignore this callback.
+}
+
+//-----------------------------------------------------------------------------
+// Private functions
+//-----------------------------------------------------------------------------
+
+void QAudioInputPrivate::open()
+{
+    Q_ASSERT_X(SymbianAudio::ClosedState == m_internalState,
+        Q_FUNC_INFO, "DevSound already opened");
+
+    QT_TRAP_THROWING( m_devSound.reset(CMMFDevSound::NewL()) )
+
+    QScopedPointer<SymbianAudio::DevSoundCapabilities> caps(
+        new SymbianAudio::DevSoundCapabilities(*m_devSound, QAudio::AudioInput));
+
+    int err = SymbianAudio::Utils::isFormatSupported(m_format, *caps) ?
+                  KErrNone : KErrNotSupported;
+
+    if (KErrNone == err) {
+        setState(SymbianAudio::InitializingState);
+        TRAP(err, m_devSound->InitializeL(*this, m_nativeFourCC,
+                                          EMMFStateRecording));
+    }
+
+    if (KErrNone != err) {
+        setError(QAudio::OpenError);
+        m_devSound.reset();
+    }
+}
+
+void QAudioInputPrivate::startRecording()
+{
+    const int samplesRecorded = m_devSound->SamplesRecorded();
+    Q_ASSERT(samplesRecorded == 0);
+
+    TRAPD(err, startDevSoundL());
+    if (KErrNone == err) {
+        startDataTransfer();
+    } else {
+        setError(QAudio::OpenError);
+        close();
+    }
+}
+
+void QAudioInputPrivate::startDevSoundL()
+{
+    TMMFCapabilities nativeFormat = m_devSound->Config();
+    m_nativeFormat.iBufferSize = nativeFormat.iBufferSize;
+    m_devSound->SetConfigL(m_nativeFormat);
+    m_devSound->RecordInitL();
+}
+
+void QAudioInputPrivate::startDataTransfer()
+{
+    m_notifyTimer->start(m_notifyInterval);
+
+    if (m_pullMode)
+        m_pullTimer->start();
+
+    if (bytesReady()) {
+        setState(SymbianAudio::ActiveState);
+        if (!m_pullMode)
+            pushData();
+    } else {
+        if (SymbianAudio::SuspendedState == m_internalState)
+            setState(SymbianAudio::ActiveState);
+        else
+            setState(SymbianAudio::IdleState);
+    }
+}
+
+CMMFDataBuffer* QAudioInputPrivate::currentBuffer() const
+{
+    CMMFDataBuffer *result = m_devSoundBuffer;
+    if (!result && !m_devSoundBufferQ.empty())
+        result = m_devSoundBufferQ.front();
+    return result;
+}
+
+void QAudioInputPrivate::pushData()
+{
+    Q_ASSERT_X(bytesReady(), Q_FUNC_INFO, "No data available");
+    Q_ASSERT_X(!m_pullMode, Q_FUNC_INFO, "pushData called when in pull mode");
+    qobject_cast<SymbianAudioInputPrivate *>(m_sink)->dataReady();
+}
+
+qint64 QAudioInputPrivate::read(char *data, qint64 len)
+{
+    // SymbianAudioInputPrivate is ready to read data
+
+    Q_ASSERT_X(!m_pullMode, Q_FUNC_INFO,
+        "read called when in pull mode");
+
+    qint64 bytesRead = 0;
+
+    CMMFDataBuffer *buffer = 0;
+    while ((buffer = currentBuffer()) && (bytesRead < len)) {
+        if (SymbianAudio::IdleState == m_internalState)
+            setState(SymbianAudio::ActiveState);
+
+        TDesC8 &inputBuffer = buffer->Data();
+
+        const qint64 inputBytes = bytesReady();
+        const qint64 outputBytes = len - bytesRead;
+        const qint64 copyBytes = outputBytes < inputBytes ?
+                                     outputBytes : inputBytes;
+
+        memcpy(data, inputBuffer.Ptr() + m_devSoundBufferPos, copyBytes);
+
+        m_devSoundBufferPos += copyBytes;
+        data += copyBytes;
+        bytesRead += copyBytes;
+
+        if (!bytesReady())
+            bufferEmptied();
+    }
+
+    return bytesRead;
+}
+
+void QAudioInputPrivate::pullData()
+{
+    Q_ASSERT_X(m_pullMode, Q_FUNC_INFO,
+        "pullData called when in push mode");
+
+    CMMFDataBuffer *buffer = 0;
+    while (buffer = currentBuffer()) {
+        if (SymbianAudio::IdleState == m_internalState)
+            setState(SymbianAudio::ActiveState);
+
+        TDesC8 &inputBuffer = buffer->Data();
+
+        const qint64 inputBytes = bytesReady();
+        const qint64 bytesPushed = m_sink->write(
+            (char*)inputBuffer.Ptr() + m_devSoundBufferPos, inputBytes);
+
+        m_devSoundBufferPos += bytesPushed;
+
+        if (!bytesReady())
+            bufferEmptied();
+
+        if (!bytesPushed)
+            break;
+    }
+}
+
+void QAudioInputPrivate::bufferEmptied()
+{
+    m_devSoundBufferPos = 0;
+
+    if (m_devSoundBuffer) {
+        m_totalBytesReady -= m_devSoundBuffer->Data().Length();
+        m_devSoundBuffer = 0;
+        m_devSound->RecordData();
+    } else {
+        Q_ASSERT(!m_devSoundBufferQ.empty());
+        m_totalBytesReady -= m_devSoundBufferQ.front()->Data().Length();
+        m_devSoundBufferQ.erase(m_devSoundBufferQ.begin());
+
+        // If the queue has been emptied, resume transfer from the hardware
+        if (m_devSoundBufferQ.empty())
+            m_devSound->RecordInitL();
+    }
+
+    Q_ASSERT(m_totalBytesReady >= 0);
+}
+
+void QAudioInputPrivate::close()
+{
+    m_notifyTimer->stop();
+    m_pullTimer->stop();
+
+    m_error = QAudio::NoError;
+
+    if (m_devSound)
+        m_devSound->Stop();
+    m_devSound.reset();
+    m_devSoundBuffer = 0;
+    m_devSoundBufferSize = 0;
+    m_totalBytesReady = 0;
+
+    if (!m_pullMode) // m_sink is owned
+        delete m_sink;
+    m_pullMode = false;
+    m_sink = 0;
+
+    m_devSoundBufferQ.clear();
+    m_devSoundBufferPos = 0;
+    m_totalSamplesRecorded = 0;
+
+    setState(SymbianAudio::ClosedState);
+}
+
+qint64 QAudioInputPrivate::getSamplesRecorded() const
+{
+    qint64 result = 0;
+    if (m_devSound)
+        result = qint64(m_devSound->SamplesRecorded());
+    return result;
+}
+
+void QAudioInputPrivate::setError(QAudio::Error error)
+{
+    m_error = error;
+
+    // Although no state transition actually occurs here, a stateChanged event
+    // must be emitted to inform the client that the call to start() was
+    // unsuccessful.
+    if (QAudio::OpenError == error)
+        emit stateChanged(QAudio::StoppedState);
+
+    // Close the DevSound instance.  This causes a transition to StoppedState.
+    // This must be done asynchronously in case the current function was called
+    // from a DevSound event handler, in which case deleting the DevSound
+    // instance may cause an exception.
+    QMetaObject::invokeMethod(this, "close", Qt::QueuedConnection);
+}
+
+void QAudioInputPrivate::setState(SymbianAudio::State newInternalState)
+{
+    const QAudio::State oldExternalState = m_externalState;
+    m_internalState = newInternalState;
+    m_externalState = SymbianAudio::Utils::stateNativeToQt(
+                            m_internalState, initializingState());
+
+    if (m_externalState != oldExternalState)
+        emit stateChanged(m_externalState);
+}
+
+QAudio::State QAudioInputPrivate::initializingState() const
+{
+    return QAudio::IdleState;
+}
+
+QT_END_NAMESPACE
diff --git a/src/multimedia/audio/qaudioinput_symbian_p.h b/src/multimedia/audio/qaudioinput_symbian_p.h
new file mode 100644
index 0000000..ca3ccf7
--- /dev/null
+++ b/src/multimedia/audio/qaudioinput_symbian_p.h
@@ -0,0 +1,188 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  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_SYMBIAN_P_H
+#define QAUDIOINPUT_SYMBIAN_P_H
+
+#include <QtMultimedia/qaudioengine.h>
+#include <QTime>
+#include <QTimer>
+#include <sounddevice.h>
+#include "qaudio_symbian_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QAudioInputPrivate;
+
+class SymbianAudioInputPrivate : public QIODevice
+{
+    friend class QAudioInputPrivate;
+    Q_OBJECT
+public:
+    SymbianAudioInputPrivate(QAudioInputPrivate *audio);
+    ~SymbianAudioInputPrivate();
+
+    qint64 readData(char *data, qint64 len);
+    qint64 writeData(const char *data, qint64 len);
+
+    void dataReady();
+
+private:
+    QAudioInputPrivate *const m_audioDevice;
+};
+
+class QAudioInputPrivate
+    :   public QAbstractAudioInput
+    ,   public MDevSoundObserver
+{
+    friend class SymbianAudioInputPrivate;
+    Q_OBJECT
+public:
+    QAudioInputPrivate(const QByteArray &device,
+                      const QAudioFormat &audioFormat);
+    ~QAudioInputPrivate();
+
+    // QAbstractAudioInput
+    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 processedUSecs() const;
+    qint64 elapsedUSecs() const;
+    QAudio::Error error() const;
+    QAudio::State state() const;
+    QAudioFormat format() const;
+
+    // MDevSoundObserver
+    void InitializeComplete(TInt aError);
+    void ToneFinished(TInt aError);
+    void BufferToBeFilled(CMMFBuffer *aBuffer);
+    void PlayError(TInt aError);
+    void BufferToBeEmptied(CMMFBuffer *aBuffer);
+    void RecordError(TInt aError);
+    void ConvertError(TInt aError);
+    void DeviceMessage(TUid aMessageType, const TDesC8 &aMsg);
+
+private slots:
+    void pullData();
+
+private:
+   void open();
+   void startRecording();
+   void startDevSoundL();
+   void startDataTransfer();
+   CMMFDataBuffer* currentBuffer() const;
+   void pushData();
+   qint64 read(char *data, qint64 len);
+   void bufferEmptied();
+   Q_INVOKABLE void close();
+
+   qint64 getSamplesRecorded() const;
+
+   void setError(QAudio::Error error);
+   void setState(SymbianAudio::State state);
+
+   QAudio::State initializingState() const;
+
+private:
+    const QByteArray m_device;
+    const QAudioFormat m_format;
+
+    int m_clientBufferSize;
+    int m_notifyInterval;
+    QScopedPointer<QTimer> m_notifyTimer;
+    QTime m_elapsed;
+    QAudio::Error m_error;
+
+    SymbianAudio::State m_internalState;
+    QAudio::State m_externalState;
+
+    bool m_pullMode;
+    QIODevice *m_sink;
+
+    QScopedPointer<QTimer> m_pullTimer;
+
+    QScopedPointer<CMMFDevSound> m_devSound;
+    TUint32 m_nativeFourCC;
+    TMMFCapabilities m_nativeFormat;
+
+    // Latest buffer provided by DevSound, to be empied of data.
+    CMMFDataBuffer *m_devSoundBuffer;
+
+    int m_devSoundBufferSize;
+
+    // Total amount of data in buffers provided by DevSound
+    int m_totalBytesReady;
+
+    // Queue of buffers returned after call to CMMFDevSound::Pause().
+    QList<CMMFDataBuffer *> m_devSoundBufferQ;
+
+    // Current read position within m_devSoundBuffer
+    qint64 m_devSoundBufferPos;
+
+    // Samples recorded up to the last call to suspend().  It is necessary
+    // to cache this because suspend() is implemented using
+    // CMMFDevSound::Stop(), which resets DevSound's SamplesRecorded() counter.
+    quint32 m_totalSamplesRecorded;
+
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/multimedia/audio/qaudiooutput_alsa_p.cpp b/src/multimedia/audio/qaudiooutput_alsa_p.cpp
index e49c75a..1cef335 100644
--- a/src/multimedia/audio/qaudiooutput_alsa_p.cpp
+++ b/src/multimedia/audio/qaudiooutput_alsa_p.cpp
@@ -648,9 +648,10 @@ void QAudioOutputPrivate::userFeed()
 
 void QAudioOutputPrivate::feedback()
 {
-    QMetaObject::invokeMethod(this, SLOT(updateAvailable()), Qt::QueuedConnection);
+    updateAvailable();
 }
 
+
 void QAudioOutputPrivate::updateAvailable()
 {
 #ifdef DEBUG_AUDIO
diff --git a/src/multimedia/audio/qaudiooutput_symbian_p.cpp b/src/multimedia/audio/qaudiooutput_symbian_p.cpp
new file mode 100644
index 0000000..945a08d
--- /dev/null
+++ b/src/multimedia/audio/qaudiooutput_symbian_p.cpp
@@ -0,0 +1,696 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qaudiooutput_symbian_p.h"
+
+QT_BEGIN_NAMESPACE
+
+//-----------------------------------------------------------------------------
+// Constants
+//-----------------------------------------------------------------------------
+
+const int UnderflowTimerInterval = 50; // ms
+
+
+//-----------------------------------------------------------------------------
+// Private class
+//-----------------------------------------------------------------------------
+
+SymbianAudioOutputPrivate::SymbianAudioOutputPrivate(
+                               QAudioOutputPrivate *audioDevice)
+    :   m_audioDevice(audioDevice)
+{
+
+}
+
+SymbianAudioOutputPrivate::~SymbianAudioOutputPrivate()
+{
+
+}
+
+qint64 SymbianAudioOutputPrivate::readData(char *data, qint64 len)
+{
+    Q_UNUSED(data)
+    Q_UNUSED(len)
+    return 0;
+}
+
+qint64 SymbianAudioOutputPrivate::writeData(const char *data, qint64 len)
+{
+    qint64 totalWritten = 0;
+
+    if (m_audioDevice->state() == QAudio::ActiveState ||
+        m_audioDevice->state() == QAudio::IdleState) {
+
+        while (totalWritten < len) {
+            const qint64 written = m_audioDevice->pushData(data + totalWritten,
+                                                           len - totalWritten);
+            if (written > 0)
+                totalWritten += written;
+            else
+                break;
+        }
+    }
+
+    return totalWritten;
+}
+
+
+//-----------------------------------------------------------------------------
+// Public functions
+//-----------------------------------------------------------------------------
+
+QAudioOutputPrivate::QAudioOutputPrivate(const QByteArray &device,
+                                       const QAudioFormat &format)
+    :   m_device(device)
+    ,   m_format(format)
+    ,   m_clientBufferSize(SymbianAudio::DefaultBufferSize)
+    ,   m_notifyInterval(SymbianAudio::DefaultNotifyInterval)
+    ,   m_notifyTimer(new QTimer(this))
+    ,   m_error(QAudio::NoError)
+    ,   m_internalState(SymbianAudio::ClosedState)
+    ,   m_externalState(QAudio::StoppedState)
+    ,   m_pullMode(false)
+    ,   m_source(0)
+    ,   m_devSoundBuffer(0)
+    ,   m_devSoundBufferSize(0)
+    ,   m_bytesWritten(0)
+    ,   m_pushDataReady(false)
+    ,   m_bytesPadding(0)
+    ,   m_underflow(false)
+    ,   m_lastBuffer(false)
+    ,   m_underflowTimer(new QTimer(this))
+    ,   m_samplesPlayed(0)
+    ,   m_totalSamplesPlayed(0)
+{
+    connect(m_notifyTimer.data(), SIGNAL(timeout()), this, SIGNAL(notify()));
+
+    SymbianAudio::Utils::formatQtToNative(m_format, m_nativeFourCC,
+                                          m_nativeFormat);
+
+    m_underflowTimer->setInterval(UnderflowTimerInterval);
+    connect(m_underflowTimer.data(), SIGNAL(timeout()), this,
+            SLOT(underflowTimerExpired()));
+}
+
+QAudioOutputPrivate::~QAudioOutputPrivate()
+{
+    close();
+}
+
+QIODevice* QAudioOutputPrivate::start(QIODevice *device)
+{
+    stop();
+
+    // We have to set these before the call to open() because of the
+    // logic in initializingState()
+    if (device) {
+        m_pullMode = true;
+        m_source = device;
+    }
+
+    open();
+
+    if (SymbianAudio::ClosedState != m_internalState) {
+        if (device) {
+            connect(m_source, SIGNAL(readyRead()), this, SLOT(dataReady()));
+        } else {
+            m_source = new SymbianAudioOutputPrivate(this);
+            m_source->open(QIODevice::WriteOnly | QIODevice::Unbuffered);
+        }
+
+        m_elapsed.restart();
+    }
+
+    return m_source;
+}
+
+void QAudioOutputPrivate::stop()
+{
+    close();
+}
+
+void QAudioOutputPrivate::reset()
+{
+    m_totalSamplesPlayed += getSamplesPlayed();
+    m_devSound->Stop();
+    m_bytesPadding = 0;
+    startPlayback();
+}
+
+void QAudioOutputPrivate::suspend()
+{
+    if (SymbianAudio::ActiveState == m_internalState
+        || SymbianAudio::IdleState == m_internalState) {
+        m_notifyTimer->stop();
+        m_underflowTimer->stop();
+
+        const qint64 samplesWritten = SymbianAudio::Utils::bytesToSamples(
+                                          m_format, m_bytesWritten);
+        m_bytesWritten = 0;
+
+        const qint64 samplesPlayed = getSamplesPlayed();
+
+        // CMMFDevSound::Pause() is not guaranteed to work correctly in all
+        // implementations, for play-mode DevSound sessions.  We therefore
+        // have to implement suspend() by calling CMMFDevSound::Stop().
+        // Because this causes buffered data to be dropped, we replace the
+        // lost data with silence following a call to resume(), in order to
+        // ensure that processedUSecs() returns the correct value.
+        m_devSound->Stop();
+        m_totalSamplesPlayed += samplesPlayed;
+
+        // Calculate the amount of data dropped
+        const qint64 paddingSamples = samplesWritten - samplesPlayed;
+        m_bytesPadding = SymbianAudio::Utils::samplesToBytes(m_format,
+                                                             paddingSamples);
+
+        setState(SymbianAudio::SuspendedState);
+    }
+}
+
+void QAudioOutputPrivate::resume()
+{
+    if (SymbianAudio::SuspendedState == m_internalState)
+        startPlayback();
+}
+
+int QAudioOutputPrivate::bytesFree() const
+{
+    int result = 0;
+    if (m_devSoundBuffer) {
+        const TDes8 &outputBuffer = m_devSoundBuffer->Data();
+        result = outputBuffer.MaxLength() - outputBuffer.Length();
+    }
+    return result;
+}
+
+int QAudioOutputPrivate::periodSize() const
+{
+    return bufferSize();
+}
+
+void QAudioOutputPrivate::setBufferSize(int value)
+{
+    // Note that DevSound does not allow its client to specify the buffer size.
+    // This functionality is available via custom interfaces, but since these
+    // cannot be guaranteed to work across all DevSound implementations, we
+    // do not use them here.
+    // In order to comply with the expected bevahiour of QAudioOutput, we store
+    // the value and return it from bufferSize(), but the underlying DevSound
+    // buffer size remains unchanged.
+    if (value > 0)
+        m_clientBufferSize = value;
+}
+
+int QAudioOutputPrivate::bufferSize() const
+{
+    return m_devSoundBufferSize ? m_devSoundBufferSize : m_clientBufferSize;
+}
+
+void QAudioOutputPrivate::setNotifyInterval(int ms)
+{
+    if (ms > 0) {
+        const int oldNotifyInterval = m_notifyInterval;
+        m_notifyInterval = ms;
+        if (m_notifyTimer->isActive() && ms != oldNotifyInterval)
+            m_notifyTimer->start(m_notifyInterval);
+    }
+}
+
+int QAudioOutputPrivate::notifyInterval() const
+{
+    return m_notifyInterval;
+}
+
+qint64 QAudioOutputPrivate::processedUSecs() const
+{
+    int samplesPlayed = 0;
+    if (m_devSound && SymbianAudio::SuspendedState != m_internalState)
+        samplesPlayed = getSamplesPlayed();
+
+    // Protect against division by zero
+    Q_ASSERT_X(m_format.frequency() > 0, Q_FUNC_INFO, "Invalid frequency");
+
+    const qint64 result = qint64(1000000) *
+                          (samplesPlayed + m_totalSamplesPlayed)
+                        / m_format.frequency();
+
+    return result;
+}
+
+qint64 QAudioOutputPrivate::elapsedUSecs() const
+{
+    const qint64 result = (QAudio::StoppedState == state()) ?
+                              0 : m_elapsed.elapsed() * 1000;
+    return result;
+}
+
+QAudio::Error QAudioOutputPrivate::error() const
+{
+    return m_error;
+}
+
+QAudio::State QAudioOutputPrivate::state() const
+{
+    return m_externalState;
+}
+
+QAudioFormat QAudioOutputPrivate::format() const
+{
+    return m_format;
+}
+
+//-----------------------------------------------------------------------------
+// MDevSoundObserver implementation
+//-----------------------------------------------------------------------------
+
+void QAudioOutputPrivate::InitializeComplete(TInt aError)
+{
+    Q_ASSERT_X(SymbianAudio::InitializingState == m_internalState,
+        Q_FUNC_INFO, "Invalid state");
+
+    if (KErrNone == aError)
+        startPlayback();
+}
+
+void QAudioOutputPrivate::ToneFinished(TInt aError)
+{
+    Q_UNUSED(aError)
+    // This class doesn't use DevSound's tone playback functions, so should
+    // never receive this callback.
+    Q_ASSERT_X(false, Q_FUNC_INFO, "Unexpected callback");
+}
+
+void QAudioOutputPrivate::BufferToBeFilled(CMMFBuffer *aBuffer)
+{
+    // Following receipt of this callback, DevSound should not provide another
+    // buffer until we have returned the current one.
+    Q_ASSERT_X(!m_devSoundBuffer, Q_FUNC_INFO, "Buffer already held");
+
+    // Will be returned to DevSound by bufferFilled().
+    m_devSoundBuffer = static_cast<CMMFDataBuffer*>(aBuffer);
+
+    if (!m_devSoundBufferSize)
+        m_devSoundBufferSize = m_devSoundBuffer->Data().MaxLength();
+
+    writePaddingData();
+
+    if (m_pullMode && isDataReady() && !m_bytesPadding)
+        pullData();
+}
+
+void QAudioOutputPrivate::PlayError(TInt aError)
+{
+    switch (aError) {
+    case KErrUnderflow:
+        m_underflow = true;
+        if (m_pullMode && !m_lastBuffer)
+            setError(QAudio::UnderrunError);
+        else
+            setState(SymbianAudio::IdleState);
+        break;
+    default:
+        setError(QAudio::IOError);
+        break;
+    }
+}
+
+void QAudioOutputPrivate::BufferToBeEmptied(CMMFBuffer *aBuffer)
+{
+    Q_UNUSED(aBuffer)
+    // This class doesn't use DevSound in record mode, so should never receive
+    // this callback.
+    Q_ASSERT_X(false, Q_FUNC_INFO, "Unexpected callback");
+}
+
+void QAudioOutputPrivate::RecordError(TInt aError)
+{
+    Q_UNUSED(aError)
+    // This class doesn't use DevSound in record mode, so should never receive
+    // this callback.
+    Q_ASSERT_X(false, Q_FUNC_INFO, "Unexpected callback");
+}
+
+void QAudioOutputPrivate::ConvertError(TInt aError)
+{
+    Q_UNUSED(aError)
+    // This class doesn't use DevSound's format conversion functions, so
+    // should never receive this callback.
+    Q_ASSERT_X(false, Q_FUNC_INFO, "Unexpected callback");
+}
+
+void QAudioOutputPrivate::DeviceMessage(TUid aMessageType, const TDesC8 &aMsg)
+{
+    Q_UNUSED(aMessageType)
+    Q_UNUSED(aMsg)
+    // Ignore this callback.
+}
+
+//-----------------------------------------------------------------------------
+// Private functions
+//-----------------------------------------------------------------------------
+
+void QAudioOutputPrivate::dataReady()
+{
+    // Client-provided QIODevice has data ready to read.
+
+    Q_ASSERT_X(m_source->bytesAvailable(), Q_FUNC_INFO,
+        "readyRead signal received, but no data available");
+
+    if (!m_bytesPadding)
+        pullData();
+}
+
+void QAudioOutputPrivate::underflowTimerExpired()
+{
+    const TInt samplesPlayed = getSamplesPlayed();
+    if (m_samplesPlayed && (samplesPlayed == m_samplesPlayed)) {
+        setError(QAudio::UnderrunError);
+    } else {
+        m_samplesPlayed = samplesPlayed;
+        m_underflowTimer->start();
+    }
+}
+
+void QAudioOutputPrivate::open()
+{
+    Q_ASSERT_X(SymbianAudio::ClosedState == m_internalState,
+        Q_FUNC_INFO, "DevSound already opened");
+
+    QT_TRAP_THROWING( m_devSound.reset(CMMFDevSound::NewL()) )
+
+    QScopedPointer<SymbianAudio::DevSoundCapabilities> caps(
+        new SymbianAudio::DevSoundCapabilities(*m_devSound,
+                                               QAudio::AudioOutput));
+
+    int err = SymbianAudio::Utils::isFormatSupported(m_format, *caps) ?
+                  KErrNone : KErrNotSupported;
+
+    if (KErrNone == err) {
+        setState(SymbianAudio::InitializingState);
+        TRAP(err, m_devSound->InitializeL(*this, m_nativeFourCC,
+                                          EMMFStatePlaying));
+    }
+
+    if (KErrNone != err) {
+        setError(QAudio::OpenError);
+        m_devSound.reset();
+    }
+}
+
+void QAudioOutputPrivate::startPlayback()
+{
+    TRAPD(err, startDevSoundL());
+    if (KErrNone == err) {
+        if (isDataReady())
+            setState(SymbianAudio::ActiveState);
+        else
+            setState(SymbianAudio::IdleState);
+
+        m_notifyTimer->start(m_notifyInterval);
+        m_underflow = false;
+
+        Q_ASSERT(m_devSound->SamplesPlayed() == 0);
+
+        writePaddingData();
+
+        if (m_pullMode && m_source->bytesAvailable() && !m_bytesPadding)
+            dataReady();
+    } else {
+        setError(QAudio::OpenError);
+        close();
+    }
+}
+
+void QAudioOutputPrivate::startDevSoundL()
+{
+    TMMFCapabilities nativeFormat = m_devSound->Config();
+    m_nativeFormat.iBufferSize = nativeFormat.iBufferSize;
+    m_devSound->SetConfigL(m_nativeFormat);
+    m_devSound->PlayInitL();
+}
+
+void QAudioOutputPrivate::writePaddingData()
+{
+    // See comments in suspend()
+
+    while (m_devSoundBuffer && m_bytesPadding) {
+        if (SymbianAudio::IdleState == m_internalState)
+            setState(SymbianAudio::ActiveState);
+
+        TDes8 &outputBuffer = m_devSoundBuffer->Data();
+        const qint64 outputBytes = bytesFree();
+        const qint64 paddingBytes = outputBytes < m_bytesPadding ?
+                                        outputBytes : m_bytesPadding;
+        unsigned char *ptr = const_cast<unsigned char*>(outputBuffer.Ptr());
+        Mem::FillZ(ptr, paddingBytes);
+        outputBuffer.SetLength(outputBuffer.Length() + paddingBytes);
+        m_bytesPadding -= paddingBytes;
+
+        if (m_pullMode && m_source->atEnd())
+            lastBufferFilled();
+        if (paddingBytes == outputBytes)
+            bufferFilled();
+    }
+}
+
+qint64 QAudioOutputPrivate::pushData(const char *data, qint64 len)
+{
+    // Data has been written to SymbianAudioOutputPrivate
+
+    Q_ASSERT_X(!m_pullMode, Q_FUNC_INFO,
+        "pushData called when in pull mode");
+
+    const unsigned char *const inputPtr =
+        reinterpret_cast<const unsigned char*>(data);
+    qint64 bytesWritten = 0;
+
+    if (SymbianAudio::IdleState == m_internalState)
+        setState(SymbianAudio::ActiveState);
+
+    while (m_devSoundBuffer && (bytesWritten < len)) {
+        // writePaddingData() is called from BufferToBeFilled(), so we should
+        // never have any padding data left at this point.
+        Q_ASSERT_X(0 == m_bytesPadding, Q_FUNC_INFO,
+            "Padding bytes remaining in pushData");
+
+        TDes8 &outputBuffer = m_devSoundBuffer->Data();
+
+        const qint64 outputBytes = bytesFree();
+        const qint64 inputBytes = len - bytesWritten;
+        const qint64 copyBytes = outputBytes < inputBytes ?
+                                     outputBytes : inputBytes;
+
+        outputBuffer.Append(inputPtr + bytesWritten, copyBytes);
+        bytesWritten += copyBytes;
+
+        bufferFilled();
+    }
+
+    m_pushDataReady = (bytesWritten < len);
+
+    // If DevSound is still initializing (m_internalState == InitializingState),
+    // we cannot transition m_internalState to ActiveState, but we must emit
+    // an (external) state change from IdleState to ActiveState.  The following
+    // call triggers this signal.
+    setState(m_internalState);
+
+    return bytesWritten;
+}
+
+void QAudioOutputPrivate::pullData()
+{
+    Q_ASSERT_X(m_pullMode, Q_FUNC_INFO,
+        "pullData called when in push mode");
+
+    if (m_bytesPadding)
+        m_bytesPadding = 1;
+
+    // writePaddingData() is called by BufferToBeFilled() before pullData(),
+    // so we should never have any padding data left at this point.
+    Q_ASSERT_X(0 == m_bytesPadding, Q_FUNC_INFO,
+        "Padding bytes remaining in pullData");
+
+    qint64 inputBytes = m_source->bytesAvailable();
+    while (m_devSoundBuffer && inputBytes) {
+        if (SymbianAudio::IdleState == m_internalState)
+            setState(SymbianAudio::ActiveState);
+
+        TDes8 &outputBuffer = m_devSoundBuffer->Data();
+
+        const qint64 outputBytes = bytesFree();
+        const qint64 copyBytes = outputBytes < inputBytes ?
+                                     outputBytes : inputBytes;
+
+        char *outputPtr = (char*)(outputBuffer.Ptr() + outputBuffer.Length());
+        const qint64 bytesCopied = m_source->read(outputPtr, copyBytes);
+        Q_ASSERT(bytesCopied == copyBytes);
+        outputBuffer.SetLength(outputBuffer.Length() + bytesCopied);
+        inputBytes -= bytesCopied;
+
+        if (m_source->atEnd())
+            lastBufferFilled();
+        else if (copyBytes == outputBytes)
+            bufferFilled();
+    }
+}
+
+void QAudioOutputPrivate::bufferFilled()
+{
+    Q_ASSERT_X(m_devSoundBuffer, Q_FUNC_INFO, "No buffer to return");
+
+    const TDes8 &outputBuffer = m_devSoundBuffer->Data();
+    m_bytesWritten += outputBuffer.Length();
+
+    m_devSoundBuffer = 0;
+
+    m_samplesPlayed = getSamplesPlayed();
+    m_underflowTimer->start();
+
+    if (QAudio::UnderrunError == m_error)
+        m_error = QAudio::NoError;
+
+    m_devSound->PlayData();
+}
+
+void QAudioOutputPrivate::lastBufferFilled()
+{
+    Q_ASSERT_X(m_devSoundBuffer, Q_FUNC_INFO, "No buffer to fill");
+    Q_ASSERT_X(!m_lastBuffer, Q_FUNC_INFO, "Last buffer already sent");
+    m_lastBuffer = true;
+    m_devSoundBuffer->SetLastBuffer(ETrue);
+    bufferFilled();
+}
+
+void QAudioOutputPrivate::close()
+{
+    m_notifyTimer->stop();
+    m_underflowTimer->stop();
+
+    m_error = QAudio::NoError;
+
+    if (m_devSound)
+        m_devSound->Stop();
+    m_devSound.reset();
+    m_devSoundBuffer = 0;
+    m_devSoundBufferSize = 0;
+
+    if (!m_pullMode) // m_source is owned
+        delete m_source;
+    m_pullMode = false;
+    m_source = 0;
+
+    m_bytesWritten = 0;
+    m_pushDataReady = false;
+    m_bytesPadding = 0;
+    m_underflow = false;
+    m_lastBuffer = false;
+    m_samplesPlayed = 0;
+    m_totalSamplesPlayed = 0;
+
+    setState(SymbianAudio::ClosedState);
+}
+
+qint64 QAudioOutputPrivate::getSamplesPlayed() const
+{
+    qint64 result = 0;
+    if (m_devSound) {
+        const qint64 samplesWritten = SymbianAudio::Utils::bytesToSamples(
+                                          m_format, m_bytesWritten);
+
+        if (m_underflow) {
+            result = samplesWritten;
+        } else {
+            // This is necessary because some DevSound implementations report
+            // that they have played more data than has actually been provided to them
+            // by the client.
+            const qint64 devSoundSamplesPlayed(m_devSound->SamplesPlayed());
+            result = qMin(devSoundSamplesPlayed, samplesWritten);
+        }
+    }
+    return result;
+}
+
+void QAudioOutputPrivate::setError(QAudio::Error error)
+{
+    m_error = error;
+
+    // Although no state transition actually occurs here, a stateChanged event
+    // must be emitted to inform the client that the call to start() was
+    // unsuccessful.
+    if (QAudio::OpenError == error)
+        emit stateChanged(QAudio::StoppedState);
+
+    if (QAudio::UnderrunError == error)
+        setState(SymbianAudio::IdleState);
+    else
+        // Close the DevSound instance.  This causes a transition to
+        // StoppedState.  This must be done asynchronously in case the
+        // current function was called from a DevSound event handler, in which
+        // case deleting the DevSound instance may cause an exception.
+        QMetaObject::invokeMethod(this, "close", Qt::QueuedConnection);
+}
+
+void QAudioOutputPrivate::setState(SymbianAudio::State newInternalState)
+{
+    const QAudio::State oldExternalState = m_externalState;
+    m_internalState = newInternalState;
+    m_externalState = SymbianAudio::Utils::stateNativeToQt(
+                            m_internalState, initializingState());
+
+    if (m_externalState != oldExternalState)
+        emit stateChanged(m_externalState);
+}
+
+bool QAudioOutputPrivate::isDataReady() const
+{
+    return (m_source && m_source->bytesAvailable())
+        ||  m_bytesPadding
+        ||  m_pushDataReady;
+}
+
+QAudio::State QAudioOutputPrivate::initializingState() const
+{
+    return isDataReady() ? QAudio::ActiveState : QAudio::IdleState;
+}
+
+QT_END_NAMESPACE
diff --git a/src/multimedia/audio/qaudiooutput_symbian_p.h b/src/multimedia/audio/qaudiooutput_symbian_p.h
new file mode 100644
index 0000000..00ccb24
--- /dev/null
+++ b/src/multimedia/audio/qaudiooutput_symbian_p.h
@@ -0,0 +1,210 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  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_SYMBIAN_P_H
+#define QAUDIOOUTPUT_SYMBIAN_P_H
+
+#include <QtMultimedia/qaudioengine.h>
+#include <QTime>
+#include <QTimer>
+#include <sounddevice.h>
+#include "qaudio_symbian_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QAudioOutputPrivate;
+
+class SymbianAudioOutputPrivate : public QIODevice
+{
+    friend class QAudioOutputPrivate;
+    Q_OBJECT
+public:
+    SymbianAudioOutputPrivate(QAudioOutputPrivate *audio);
+    ~SymbianAudioOutputPrivate();
+
+    qint64 readData(char *data, qint64 len);
+    qint64 writeData(const char *data, qint64 len);
+
+private:
+    QAudioOutputPrivate *const m_audioDevice;
+};
+
+class QAudioOutputPrivate
+    :   public QAbstractAudioOutput
+    ,   public MDevSoundObserver
+{
+    friend class SymbianAudioOutputPrivate;
+    Q_OBJECT
+public:
+    QAudioOutputPrivate(const QByteArray &device,
+                       const QAudioFormat &audioFormat);
+    ~QAudioOutputPrivate();
+
+    // QAbstractAudioOutput
+    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 processedUSecs() const;
+    qint64 elapsedUSecs() const;
+    QAudio::Error error() const;
+    QAudio::State state() const;
+    QAudioFormat format() const;
+
+    // MDevSoundObserver
+    void InitializeComplete(TInt aError);
+    void ToneFinished(TInt aError);
+    void BufferToBeFilled(CMMFBuffer *aBuffer);
+    void PlayError(TInt aError);
+    void BufferToBeEmptied(CMMFBuffer *aBuffer);
+    void RecordError(TInt aError);
+    void ConvertError(TInt aError);
+    void DeviceMessage(TUid aMessageType, const TDesC8 &aMsg);
+
+private slots:
+    void dataReady();
+    void underflowTimerExpired();
+
+private:
+   void open();
+   void startPlayback();
+   void startDevSoundL();
+   void writePaddingData();
+   qint64 pushData(const char *data, qint64 len);
+   void pullData();
+   void bufferFilled();
+   void lastBufferFilled();
+   Q_INVOKABLE void close();
+
+   qint64 getSamplesPlayed() const;
+
+   void setError(QAudio::Error error);
+   void setState(SymbianAudio::State state);
+
+   bool isDataReady() const;
+   QAudio::State initializingState() const;
+
+private:
+    const QByteArray m_device;
+    const QAudioFormat m_format;
+
+    int m_clientBufferSize;
+    int m_notifyInterval;
+    QScopedPointer<QTimer> m_notifyTimer;
+    QTime m_elapsed;
+    QAudio::Error m_error;
+
+    SymbianAudio::State m_internalState;
+    QAudio::State m_externalState;
+
+    bool m_pullMode;
+    QIODevice *m_source;
+
+    QScopedPointer<CMMFDevSound> m_devSound;
+    TUint32 m_nativeFourCC;
+    TMMFCapabilities m_nativeFormat;
+
+    // Buffer provided by DevSound, to be filled with data.
+    CMMFDataBuffer *m_devSoundBuffer;
+
+    int m_devSoundBufferSize;
+
+    // Number of bytes transferred from QIODevice to QAudioOutput.  It is
+    // necessary to count this because data is dropped when suspend() is
+    // called.  The difference between the position reported by DevSound and
+    // this value allows us to calculate m_bytesPadding;
+    quint32 m_bytesWritten;
+
+    // True if client has provided data while the audio subsystem was not
+    // ready to consume it.
+    bool m_pushDataReady;
+
+    // Number of zero bytes which will be written when client calls resume().
+    quint32 m_bytesPadding;
+
+    // True if PlayError(KErrUnderflow) has been called.
+    bool m_underflow;
+
+    // True if a buffer marked with the "last buffer" flag has been provided
+    // to DevSound.
+    bool m_lastBuffer;
+
+    // Some DevSound implementations ignore all underflow errors raised by the
+    // audio driver, unless the last buffer flag has been set by the client.
+    // In push-mode playback, this flag will never be set, so the underflow
+    // error will never be reported.  In order to work around this, a timer
+    // is used, which gets reset every time the client provides more data.  If
+    // the timer expires, an underflow error is raised by this object.
+    QScopedPointer<QTimer> m_underflowTimer;
+
+    // Result of previous call to CMMFDevSound::SamplesPlayed().  This value is
+    // used to determine whether, when m_underflowTimer expires, an
+    // underflow error has actually occurred.
+    quint32 m_samplesPlayed;
+
+    // Samples played up to the last call to suspend().  It is necessary
+    // to cache this because suspend() is implemented using
+    // CMMFDevSound::Stop(), which resets DevSound's SamplesPlayed() counter.
+    quint32 m_totalSamplesPlayed;
+
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/multimedia/audio/qaudiooutput_win32_p.cpp b/src/multimedia/audio/qaudiooutput_win32_p.cpp
index c7f5752..ab8da53 100644
--- a/src/multimedia/audio/qaudiooutput_win32_p.cpp
+++ b/src/multimedia/audio/qaudiooutput_win32_p.cpp
@@ -455,6 +455,9 @@ void QAudioOutputPrivate::feedback()
 
 bool QAudioOutputPrivate::deviceReady()
 {
+    if(deviceState == QAudio::StoppedState)
+        return false;
+
     if(pullMode) {
         int chunks = bytesAvailable/period_size;
 #ifdef DEBUG_AUDIO