diff -r 000000000000 -r 1918ee327afb src/multimedia/audio/qaudiooutput_mac_p.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/multimedia/audio/qaudiooutput_mac_p.cpp Mon Jan 11 14:00:40 2010 +0000 @@ -0,0 +1,705 @@ +/**************************************************************************** +** +** Copyright (C) 2009 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. +// + +#include +#include +#include +#include + +#include +#include +#include +#include + +#include +#include + +#include "qaudio_mac_p.h" +#include "qaudiooutput_mac_p.h" + + +QT_BEGIN_NAMESPACE + + +namespace +{ + +static const int default_buffer_size = 8 * 1024; + + +class QAudioOutputBuffer : public QObject +{ + Q_OBJECT + +public: + QAudioOutputBuffer(int bufferSize, int maxPeriodSize, QAudioFormat const& audioFormat): + m_deviceError(false), + m_maxPeriodSize(maxPeriodSize), + m_device(0) + { + m_buffer = new QAudioRingBuffer(bufferSize + (bufferSize % maxPeriodSize == 0 ? 0 : maxPeriodSize - (bufferSize % maxPeriodSize))); + m_bytesPerFrame = (audioFormat.sampleSize() / 8) * audioFormat.channels(); + m_periodTime = m_maxPeriodSize / m_bytesPerFrame * 1000 / audioFormat.frequency(); + + m_fillTimer = new QTimer(this); + connect(m_fillTimer, SIGNAL(timeout()), SLOT(fillBuffer())); + } + + ~QAudioOutputBuffer() + { + delete m_buffer; + } + + qint64 readFrames(char* data, qint64 maxFrames) + { + bool wecan = true; + qint64 framesRead = 0; + + while (wecan && framesRead < maxFrames) { + QAudioRingBuffer::Region region = m_buffer->acquireReadRegion((maxFrames - framesRead) * m_bytesPerFrame); + + if (region.second > 0) { + region.second -= region.second % m_bytesPerFrame; + memcpy(data + (framesRead * m_bytesPerFrame), region.first, region.second); + framesRead += region.second / m_bytesPerFrame; + } + else + wecan = false; + + m_buffer->releaseReadRegion(region); + } + + if (framesRead == 0 && m_deviceError) + framesRead = -1; + + return framesRead; + } + + qint64 writeBytes(const char* data, qint64 maxSize) + { + bool wecan = true; + qint64 bytesWritten = 0; + + maxSize -= maxSize % m_bytesPerFrame; + while (wecan && bytesWritten < maxSize) { + QAudioRingBuffer::Region region = m_buffer->acquireWriteRegion(maxSize - bytesWritten); + + if (region.second > 0) { + memcpy(region.first, data + bytesWritten, region.second); + bytesWritten += region.second; + } + else + wecan = false; + + m_buffer->releaseWriteRegion(region); + } + + if (bytesWritten > 0) + emit readyRead(); + + return bytesWritten; + } + + int available() const + { + return m_buffer->free(); + } + + void reset() + { + m_buffer->reset(); + m_deviceError = false; + } + + void setPrefetchDevice(QIODevice* device) + { + if (m_device != device) { + m_device = device; + if (m_device != 0) + fillBuffer(); + } + } + + void startFillTimer() + { + if (m_device != 0) + m_fillTimer->start(m_buffer->size() / 2 / m_maxPeriodSize * m_periodTime); + } + + void stopFillTimer() + { + m_fillTimer->stop(); + } + +signals: + void readyRead(); + +private slots: + void fillBuffer() + { + const int free = m_buffer->free(); + const int writeSize = free - (free % m_maxPeriodSize); + + if (writeSize > 0) { + bool wecan = true; + int filled = 0; + + while (!m_deviceError && wecan && filled < writeSize) { + QAudioRingBuffer::Region region = m_buffer->acquireWriteRegion(writeSize - filled); + + if (region.second > 0) { + region.second = m_device->read(region.first, region.second); + if (region.second > 0) + filled += region.second; + else if (region.second == 0) + wecan = false; + else if (region.second < 0) { + m_fillTimer->stop(); + region.second = 0; + m_deviceError = true; + } + } + else + wecan = false; + + m_buffer->releaseWriteRegion(region); + } + + if (filled > 0) + emit readyRead(); + } + } + +private: + bool m_deviceError; + int m_maxPeriodSize; + int m_bytesPerFrame; + int m_periodTime; + QIODevice* m_device; + QTimer* m_fillTimer; + QAudioRingBuffer* m_buffer; +}; + + +} + +class MacOutputDevice : public QIODevice +{ + Q_OBJECT + +public: + MacOutputDevice(QAudioOutputBuffer* audioBuffer, QObject* parent): + QIODevice(parent), + m_audioBuffer(audioBuffer) + { + open(QIODevice::WriteOnly | QIODevice::Unbuffered); + } + + qint64 readData(char* data, qint64 len) + { + Q_UNUSED(data); + Q_UNUSED(len); + + return 0; + } + + qint64 writeData(const char* data, qint64 len) + { + return m_audioBuffer->writeBytes(data, len); + } + + bool isSequential() const + { + return true; + } + +private: + QAudioOutputBuffer* m_audioBuffer; +}; + + +QAudioOutputPrivate::QAudioOutputPrivate(const QByteArray& device, const QAudioFormat& format): + audioFormat(format) +{ + QDataStream ds(device); + quint32 did, mode; + + ds >> did >> mode; + + if (QAudio::Mode(mode) == QAudio::AudioInput) + errorCode = QAudio::OpenError; + else { + isOpen = false; + audioDeviceId = AudioDeviceID(did); + audioUnit = 0; + audioIO = 0; + startTime = 0; + totalFrames = 0; + audioBuffer = 0; + internalBufferSize = default_buffer_size; + clockFrequency = AudioGetHostClockFrequency() / 1000; + errorCode = QAudio::NoError; + stateCode = QAudio::StopState; + audioThreadState = Stopped; + + intervalTimer = new QTimer(this); + intervalTimer->setInterval(1000); + connect(intervalTimer, SIGNAL(timeout()), SIGNAL(notify())); + } +} + +QAudioOutputPrivate::~QAudioOutputPrivate() +{ + close(); +} + +bool QAudioOutputPrivate::open() +{ + if (errorCode != QAudio::NoError) + return false; + + if (isOpen) + return true; + + ComponentDescription cd; + cd.componentType = kAudioUnitType_Output; + cd.componentSubType = kAudioUnitSubType_HALOutput; + cd.componentManufacturer = kAudioUnitManufacturer_Apple; + cd.componentFlags = 0; + cd.componentFlagsMask = 0; + + // Open + Component cp = FindNextComponent(NULL, &cd); + if (cp == 0) { + qWarning() << "QAudioOutput: Failed to find HAL Output component"; + return false; + } + + if (OpenAComponent(cp, &audioUnit) != noErr) { + qWarning() << "QAudioOutput: Unable to Open Output Component"; + return false; + } + + // register callback + AURenderCallbackStruct cb; + cb.inputProc = renderCallback; + cb.inputProcRefCon = this; + + if (AudioUnitSetProperty(audioUnit, + kAudioUnitProperty_SetRenderCallback, + kAudioUnitScope_Global, + 0, + &cb, + sizeof(cb)) != noErr) { + qWarning() << "QAudioOutput: Failed to set AudioUnit callback"; + return false; + } + + // Set Audio Device + if (AudioUnitSetProperty(audioUnit, + kAudioOutputUnitProperty_CurrentDevice, + kAudioUnitScope_Global, + 0, + &audioDeviceId, + sizeof(audioDeviceId)) != noErr) { + qWarning() << "QAudioOutput: Unable to use configured device"; + return false; + } + + // Set stream format + streamFormat = toAudioStreamBasicDescription(audioFormat); + + UInt32 size = sizeof(deviceFormat); + if (AudioUnitGetProperty(audioUnit, + kAudioUnitProperty_StreamFormat, + kAudioUnitScope_Input, + 0, + &deviceFormat, + &size) != noErr) { + qWarning() << "QAudioOutput: Unable to retrieve device format"; + return false; + } + + if (AudioUnitSetProperty(audioUnit, + kAudioUnitProperty_StreamFormat, + kAudioUnitScope_Input, + 0, + &streamFormat, + sizeof(streamFormat)) != noErr) { + qWarning() << "QAudioOutput: Unable to Set Stream information"; + return false; + } + + // Allocate buffer + UInt32 numberOfFrames = 0; + size = sizeof(UInt32); + if (AudioUnitGetProperty(audioUnit, + kAudioDevicePropertyBufferFrameSize, + kAudioUnitScope_Global, + 0, + &numberOfFrames, + &size) != noErr) { + qWarning() << "QAudioInput: Failed to get audio period size"; + return false; + } + + periodSizeBytes = (numberOfFrames * streamFormat.mSampleRate / deviceFormat.mSampleRate) * + streamFormat.mBytesPerFrame; + if (internalBufferSize < periodSizeBytes * 2) + internalBufferSize = periodSizeBytes * 2; + else + internalBufferSize -= internalBufferSize % streamFormat.mBytesPerFrame; + + audioBuffer = new QAudioOutputBuffer(internalBufferSize, periodSizeBytes, audioFormat); + connect(audioBuffer, SIGNAL(readyRead()), SLOT(inputReady())); // Pull + + audioIO = new MacOutputDevice(audioBuffer, this); + + // Init + if (AudioUnitInitialize(audioUnit)) { + qWarning() << "QAudioOutput: Failed to initialize AudioUnit"; + return false; + } + + isOpen = true; + + return true; +} + +void QAudioOutputPrivate::close() +{ + if (audioUnit != 0) { + AudioOutputUnitStop(audioUnit); + AudioUnitUninitialize(audioUnit); + CloseComponent(audioUnit); + } + + delete audioBuffer; +} + +QAudioFormat QAudioOutputPrivate::format() const +{ + return audioFormat; +} + +QIODevice* QAudioOutputPrivate::start(QIODevice* device) +{ + QIODevice* op = device; + + if (!open()) { + stateCode = QAudio::StopState; + errorCode = QAudio::OpenError; + return audioIO; + } + + reset(); + audioBuffer->reset(); + audioBuffer->setPrefetchDevice(op); + + if (op == 0) { + op = audioIO; + stateCode = QAudio::IdleState; + } + else + stateCode = QAudio::ActiveState; + + // Start + errorCode = QAudio::NoError; + totalFrames = 0; + startTime = AudioGetCurrentHostTime(); + + if (stateCode == QAudio::ActiveState) + audioThreadStart(); + + emit stateChanged(stateCode); + + return op; +} + +void QAudioOutputPrivate::stop() +{ + QMutexLocker lock(&mutex); + if (stateCode != QAudio::StopState) { + audioThreadDrain(); + + stateCode = QAudio::StopState; + errorCode = QAudio::NoError; + QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode)); + } +} + +void QAudioOutputPrivate::reset() +{ + QMutexLocker lock(&mutex); + if (stateCode != QAudio::StopState) { + audioThreadStop(); + + stateCode = QAudio::StopState; + errorCode = QAudio::NoError; + QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode)); + } +} + +void QAudioOutputPrivate::suspend() +{ + QMutexLocker lock(&mutex); + if (stateCode == QAudio::ActiveState || stateCode == QAudio::IdleState) { + audioThreadStop(); + + stateCode = QAudio::SuspendState; + errorCode = QAudio::NoError; + QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode)); + } +} + +void QAudioOutputPrivate::resume() +{ + QMutexLocker lock(&mutex); + if (stateCode == QAudio::SuspendState) { + audioThreadStart(); + + stateCode = QAudio::ActiveState; + errorCode = QAudio::NoError; + QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode)); + } +} + +int QAudioOutputPrivate::bytesFree() const +{ + return audioBuffer->available(); +} + +int QAudioOutputPrivate::periodSize() const +{ + return periodSizeBytes; +} + +void QAudioOutputPrivate::setBufferSize(int bs) +{ + if (stateCode == QAudio::StopState) + internalBufferSize = bs; +} + +int QAudioOutputPrivate::bufferSize() const +{ + return internalBufferSize; +} + +void QAudioOutputPrivate::setNotifyInterval(int milliSeconds) +{ + intervalTimer->setInterval(milliSeconds); +} + +int QAudioOutputPrivate::notifyInterval() const +{ + return intervalTimer->interval(); +} + +qint64 QAudioOutputPrivate::totalTime() const +{ + return totalFrames * 1000000 / audioFormat.frequency(); +} + +qint64 QAudioOutputPrivate::clock() const +{ + if (stateCode == QAudio::StopState) + return 0; + + return (AudioGetCurrentHostTime() - startTime) / (clockFrequency / 1000); +} + +QAudio::Error QAudioOutputPrivate::error() const +{ + return errorCode; +} + +QAudio::State QAudioOutputPrivate::state() const +{ + return stateCode; +} + +void QAudioOutputPrivate::audioThreadStart() +{ + startTimers(); + audioThreadState = Running; + AudioOutputUnitStart(audioUnit); +} + +void QAudioOutputPrivate::audioThreadStop() +{ + stopTimers(); + if (audioThreadState.testAndSetAcquire(Running, Stopped)) + threadFinished.wait(&mutex); +} + +void QAudioOutputPrivate::audioThreadDrain() +{ + stopTimers(); + if (audioThreadState.testAndSetAcquire(Running, Draining)) + threadFinished.wait(&mutex); +} + +void QAudioOutputPrivate::audioDeviceStop() +{ + AudioOutputUnitStop(audioUnit); + audioThreadState = Stopped; + threadFinished.wakeOne(); +} + +void QAudioOutputPrivate::audioDeviceIdle() +{ + QMutexLocker lock(&mutex); + if (stateCode == QAudio::ActiveState) { + audioDeviceStop(); + + errorCode = QAudio::UnderrunError; + stateCode = QAudio::IdleState; + QMetaObject::invokeMethod(this, "deviceStopped", Qt::QueuedConnection); + } +} + +void QAudioOutputPrivate::audioDeviceError() +{ + QMutexLocker lock(&mutex); + if (stateCode == QAudio::ActiveState) { + audioDeviceStop(); + + errorCode = QAudio::IOError; + stateCode = QAudio::StopState; + QMetaObject::invokeMethod(this, "deviceStopped", Qt::QueuedConnection); + } +} + +void QAudioOutputPrivate::startTimers() +{ + audioBuffer->startFillTimer(); + intervalTimer->start(); +} + +void QAudioOutputPrivate::stopTimers() +{ + audioBuffer->stopFillTimer(); + intervalTimer->stop(); +} + + +void QAudioOutputPrivate::deviceStopped() +{ + intervalTimer->stop(); + emit stateChanged(stateCode); +} + +void QAudioOutputPrivate::inputReady() +{ + QMutexLocker lock(&mutex); + if (stateCode == QAudio::IdleState) { + audioThreadStart(); + + stateCode = QAudio::ActiveState; + errorCode = QAudio::NoError; + + QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode)); + } +} + + +OSStatus QAudioOutputPrivate::renderCallback(void* inRefCon, + AudioUnitRenderActionFlags* ioActionFlags, + const AudioTimeStamp* inTimeStamp, + UInt32 inBusNumber, + UInt32 inNumberFrames, + AudioBufferList* ioData) +{ + Q_UNUSED(ioActionFlags) + Q_UNUSED(inTimeStamp) + Q_UNUSED(inBusNumber) + Q_UNUSED(inNumberFrames) + + QAudioOutputPrivate* d = static_cast(inRefCon); + + const int threadState = d->audioThreadState.fetchAndAddAcquire(0); + if (threadState == Stopped) { + ioData->mBuffers[0].mDataByteSize = 0; + d->audioDeviceStop(); + } + else { + const UInt32 bytesPerFrame = d->streamFormat.mBytesPerFrame; + qint64 framesRead; + + framesRead = d->audioBuffer->readFrames((char*)ioData->mBuffers[0].mData, + ioData->mBuffers[0].mDataByteSize / bytesPerFrame); + + if (framesRead > 0) { + ioData->mBuffers[0].mDataByteSize = framesRead * bytesPerFrame; + d->totalFrames += framesRead; + } + else { + ioData->mBuffers[0].mDataByteSize = 0; + if (framesRead == 0) { + if (threadState == Draining) + d->audioDeviceStop(); + else + d->audioDeviceIdle(); + } + else + d->audioDeviceError(); + } + } + + return noErr; +} + + +QT_END_NAMESPACE + +#include "qaudiooutput_mac_p.moc" +