--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/qtmobility/src/multimedia/audio/qaudiooutput_mac_p.cpp Wed Jun 23 19:08:38 2010 +0300
@@ -0,0 +1,748 @@
+/****************************************************************************
+**
+** 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 Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 <CoreServices/CoreServices.h>
+#include <CoreAudio/CoreAudio.h>
+#include <AudioUnit/AudioUnit.h>
+#include <AudioToolbox/AudioToolbox.h>
+
+#include <QtCore/qendian.h>
+#include <QtCore/qbuffer.h>
+#include <QtCore/qtimer.h>
+#include <QtCore/qdebug.h>
+
+#include <qaudiodeviceinfo.h>
+#include <qaudiooutput.h>
+
+#include "qaudio_mac_p.h"
+#include "qaudiooutput_mac_p.h"
+
+
+QT_BEGIN_NAMESPACE
+
+
+namespace QtMultimediaInternal
+{
+
+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(QtMultimediaInternal::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:
+ QtMultimediaInternal::QAudioOutputBuffer* m_audioBuffer;
+};
+
+
+QAudioOutputPrivate::QAudioOutputPrivate(const QByteArray& device)
+{
+ 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 = QtMultimediaInternal::default_buffer_size;
+ clockFrequency = AudioGetHostClockFrequency() / 1000;
+ errorCode = QAudio::NoError;
+ stateCode = QAudio::StoppedState;
+ 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 QtMultimediaInternal::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;
+}
+
+void QAudioOutputPrivate::setFormat(const QAudioFormat& fmt)
+{
+ if (stateCode == QAudio::StoppedState)
+ audioFormat = fmt;
+}
+
+void QAudioOutputPrivate::start(QIODevice* device)
+{
+ QIODevice* op = device;
+
+ if (!audioFormat.isValid() || !open()) {
+ stateCode = QAudio::StoppedState;
+ errorCode = QAudio::OpenError;
+ }
+
+ 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);
+}
+
+QIODevice* QAudioOutputPrivate::start()
+{
+ QIODevice* op = 0;
+
+ if (!audioFormat.isValid() || !open()) {
+ stateCode = QAudio::StoppedState;
+ 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::StoppedState) {
+ audioThreadDrain();
+
+ stateCode = QAudio::StoppedState;
+ errorCode = QAudio::NoError;
+ QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
+ }
+}
+
+void QAudioOutputPrivate::reset()
+{
+ QMutexLocker lock(&mutex);
+ if (stateCode != QAudio::StoppedState) {
+ audioThreadStop();
+
+ stateCode = QAudio::StoppedState;
+ 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::SuspendedState;
+ errorCode = QAudio::NoError;
+ QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
+ }
+}
+
+void QAudioOutputPrivate::resume()
+{
+ QMutexLocker lock(&mutex);
+ if (stateCode == QAudio::SuspendedState) {
+ 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::StoppedState)
+ internalBufferSize = bs;
+}
+
+int QAudioOutputPrivate::bufferSize() const
+{
+ return internalBufferSize;
+}
+
+void QAudioOutputPrivate::setNotifyInterval(int milliSeconds)
+{
+ if (intervalTimer->interval() == milliSeconds)
+ return;
+
+ if (milliSeconds <= 0)
+ milliSeconds = 0;
+
+ intervalTimer->setInterval(milliSeconds);
+}
+
+int QAudioOutputPrivate::notifyInterval() const
+{
+ return intervalTimer->interval();
+}
+
+qint64 QAudioOutputPrivate::processedUSecs() const
+{
+ return totalFrames * 1000000 / audioFormat.frequency();
+}
+
+qint64 QAudioOutputPrivate::elapsedUSecs() const
+{
+ if (stateCode == QAudio::StoppedState)
+ 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::StoppedState;
+ QMetaObject::invokeMethod(this, "deviceStopped", Qt::QueuedConnection);
+ }
+}
+
+void QAudioOutputPrivate::startTimers()
+{
+ audioBuffer->startFillTimer();
+ if (intervalTimer->interval() > 0)
+ intervalTimer->start();
+}
+
+void QAudioOutputPrivate::stopTimers()
+{
+ audioBuffer->stopFillTimer();
+ intervalTimer->stop();
+}
+
+
+void QAudioOutputPrivate::deviceStopped()
+{
+ intervalTimer->stop();
+ emit stateChanged(stateCode);
+}
+
+void QAudioOutputPrivate::inputReady()
+{
+ QMutexLocker lock(&mutex);
+ if (stateCode == QAudio::IdleState) {
+ audioThreadStart();
+
+ stateCode = QAudio::ActiveState;
+ errorCode = QAudio::NoError;
+
+ QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
+ }
+}
+
+
+OSStatus QAudioOutputPrivate::renderCallback(void* inRefCon,
+ AudioUnitRenderActionFlags* ioActionFlags,
+ const AudioTimeStamp* inTimeStamp,
+ UInt32 inBusNumber,
+ UInt32 inNumberFrames,
+ AudioBufferList* ioData)
+{
+ Q_UNUSED(ioActionFlags)
+ Q_UNUSED(inTimeStamp)
+ Q_UNUSED(inBusNumber)
+ Q_UNUSED(inNumberFrames)
+
+ QAudioOutputPrivate* d = static_cast<QAudioOutputPrivate*>(inRefCon);
+
+ const int threadState = d->audioThreadState.fetchAndAddAcquire(0);
+ if (threadState == Stopped) {
+ ioData->mBuffers[0].mDataByteSize = 0;
+ d->audioDeviceStop();
+ }
+ else {
+ const UInt32 bytesPerFrame = d->streamFormat.mBytesPerFrame;
+ qint64 framesRead;
+
+ framesRead = d->audioBuffer->readFrames((char*)ioData->mBuffers[0].mData,
+ ioData->mBuffers[0].mDataByteSize / bytesPerFrame);
+
+ if (framesRead > 0) {
+ ioData->mBuffers[0].mDataByteSize = framesRead * bytesPerFrame;
+ d->totalFrames += framesRead;
+ }
+ else {
+ ioData->mBuffers[0].mDataByteSize = 0;
+ if (framesRead == 0) {
+ if (threadState == Draining)
+ d->audioDeviceStop();
+ else
+ d->audioDeviceIdle();
+ }
+ else
+ d->audioDeviceError();
+ }
+ }
+
+ return noErr;
+}
+
+
+QT_END_NAMESPACE
+
+#include "qaudiooutput_mac_p.moc"
+