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Diffstat (limited to 'src/multimedia/audio/qaudiodevicefactory.cpp')
| -rw-r--r-- | src/multimedia/audio/qaudiodevicefactory.cpp | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/src/multimedia/audio/qaudiodevicefactory.cpp b/src/multimedia/audio/qaudiodevicefactory.cpp new file mode 100644 index 0000000..96545b4 --- /dev/null +++ b/src/multimedia/audio/qaudiodevicefactory.cpp @@ -0,0 +1,275 @@ +/**************************************************************************** +** +** 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 <QtCore/qdebug.h> +#include <QtMultimedia/qaudioengine.h> +#include <QtMultimedia/qaudioengineplugin.h> +#include <private/qfactoryloader_p.h> +#include "qaudiodevicefactory_p.h" + +#ifndef QT_NO_AUDIO_BACKEND +#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" +#elif defined(Q_OS_SYMBIAN) +#include "qaudiodeviceinfo_symbian_p.h" +#include "qaudiooutput_symbian_p.h" +#include "qaudioinput_symbian_p.h" +#endif +#endif + +QT_BEGIN_NAMESPACE + +#ifndef QT_NO_LIBRARY +Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader, + (QAudioEngineFactoryInterface_iid, QLatin1String("/audio"), Qt::CaseInsensitive)) +#endif + +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 processedUSecs() const { return 0; } + qint64 elapsedUSecs() const { return 0; } + QAudio::Error error() const { return QAudio::OpenError; } + QAudio::State state() const { return QAudio::StoppedState; } + 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 processedUSecs() const { return 0; } + qint64 elapsedUSecs() const { return 0; } + QAudio::Error error() const { return QAudio::OpenError; } + QAudio::State state() const { return QAudio::StoppedState; } + QAudioFormat format() const { return QAudioFormat(); } +}; + +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) || defined(Q_OS_SYMBIAN)) + foreach (const QByteArray &handle, QAudioDeviceInfoInternal::availableDevices(mode)) + devices << QAudioDeviceInfo(QLatin1String("builtin"), handle, mode); +#endif +#endif + +#ifndef QT_NO_LIBRARY + QFactoryLoader* l = loader(); + + foreach (QString const& key, l->keys()) { + QAudioEngineFactoryInterface* plugin = qobject_cast<QAudioEngineFactoryInterface*>(l->instance(key)); + if (plugin) { + foreach (QByteArray const& handle, plugin->availableDevices(mode)) + devices << QAudioDeviceInfo(key, handle, mode); + } + + delete plugin; + } +#endif + + return devices; +} + +QAudioDeviceInfo QAudioDeviceFactory::defaultInputDevice() +{ +#ifndef QT_NO_LIBRARY + QAudioEngineFactoryInterface* plugin = qobject_cast<QAudioEngineFactoryInterface*>(loader()->instance(QLatin1String("default"))); + + if (plugin) { + QList<QByteArray> list = plugin->availableDevices(QAudio::AudioInput); + if (list.size() > 0) + return QAudioDeviceInfo(QLatin1String("default"), list.at(0), QAudio::AudioInput); + } +#endif + +#ifndef QT_NO_AUDIO_BACKEND +#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 + return QAudioDeviceInfo(); +} + +QAudioDeviceInfo QAudioDeviceFactory::defaultOutputDevice() +{ +#ifndef QT_NO_LIBRARY + QAudioEngineFactoryInterface* plugin = qobject_cast<QAudioEngineFactoryInterface*>(loader()->instance(QLatin1String("default"))); + + if (plugin) { + QList<QByteArray> list = plugin->availableDevices(QAudio::AudioOutput); + if (list.size() > 0) + return QAudioDeviceInfo(QLatin1String("default"), list.at(0), QAudio::AudioOutput); + } +#endif + +#ifndef QT_NO_AUDIO_BACKEND +#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 + return QAudioDeviceInfo(); +} + +QAbstractAudioDeviceInfo* QAudioDeviceFactory::audioDeviceInfo(const QString &realm, const QByteArray &handle, QAudio::Mode mode) +{ + QAbstractAudioDeviceInfo *rc = 0; + +#ifndef QT_NO_AUDIO_BACKEND +#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 +#endif + +#ifndef QT_NO_LIBRARY + QAudioEngineFactoryInterface* plugin = + qobject_cast<QAudioEngineFactoryInterface*>(loader()->instance(realm)); + + if (plugin) + rc = plugin->createDeviceInfo(handle, mode); +#endif + + return rc == 0 ? new QNullDeviceInfo() : rc; +} + +QAbstractAudioInput* QAudioDeviceFactory::createDefaultInputDevice(QAudioFormat const &format) +{ + return createInputDevice(defaultInputDevice(), format); +} + +QAbstractAudioOutput* QAudioDeviceFactory::createDefaultOutputDevice(QAudioFormat const &format) +{ + return createOutputDevice(defaultOutputDevice(), format); +} + +QAbstractAudioInput* QAudioDeviceFactory::createInputDevice(QAudioDeviceInfo const& deviceInfo, QAudioFormat const &format) +{ + if (deviceInfo.isNull()) + return new QNullInputDevice(); +#ifndef QT_NO_AUDIO_BACKEND +#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 +#endif +#ifndef QT_NO_LIBRARY + QAudioEngineFactoryInterface* plugin = + qobject_cast<QAudioEngineFactoryInterface*>(loader()->instance(deviceInfo.realm())); + + if (plugin) + return plugin->createInput(deviceInfo.handle(), format); +#endif + + return new QNullInputDevice(); +} + +QAbstractAudioOutput* QAudioDeviceFactory::createOutputDevice(QAudioDeviceInfo const& deviceInfo, QAudioFormat const &format) +{ + if (deviceInfo.isNull()) + return new QNullOutputDevice(); +#ifndef QT_NO_AUDIO_BACKEND +#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 +#endif + +#ifndef QT_NO_LIBRARY + QAudioEngineFactoryInterface* plugin = + qobject_cast<QAudioEngineFactoryInterface*>(loader()->instance(deviceInfo.realm())); + + if (plugin) + return plugin->createOutput(deviceInfo.handle(), format); +#endif + + return new QNullOutputDevice(); +} + +QT_END_NAMESPACE + |