0
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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtMultimedia module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists for the convenience
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// of other Qt classes. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#include <CoreServices/CoreServices.h>
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#include <CoreAudio/CoreAudio.h>
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#include <AudioUnit/AudioUnit.h>
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#include <AudioToolbox/AudioToolbox.h>
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#include <QtCore/qendian.h>
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#include <QtCore/qbuffer.h>
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#include <QtCore/qtimer.h>
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#include <QtCore/qdebug.h>
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#include <QtMultimedia/qaudiodeviceinfo.h>
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#include <QtMultimedia/qaudiooutput.h>
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#include "qaudio_mac_p.h"
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#include "qaudiooutput_mac_p.h"
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QT_BEGIN_NAMESPACE
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namespace
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{
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static const int default_buffer_size = 8 * 1024;
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class QAudioOutputBuffer : public QObject
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{
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Q_OBJECT
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public:
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QAudioOutputBuffer(int bufferSize, int maxPeriodSize, QAudioFormat const& audioFormat):
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m_deviceError(false),
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m_maxPeriodSize(maxPeriodSize),
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m_device(0)
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{
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m_buffer = new QAudioRingBuffer(bufferSize + (bufferSize % maxPeriodSize == 0 ? 0 : maxPeriodSize - (bufferSize % maxPeriodSize)));
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m_bytesPerFrame = (audioFormat.sampleSize() / 8) * audioFormat.channels();
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m_periodTime = m_maxPeriodSize / m_bytesPerFrame * 1000 / audioFormat.frequency();
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m_fillTimer = new QTimer(this);
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connect(m_fillTimer, SIGNAL(timeout()), SLOT(fillBuffer()));
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}
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~QAudioOutputBuffer()
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{
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delete m_buffer;
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}
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qint64 readFrames(char* data, qint64 maxFrames)
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{
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bool wecan = true;
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qint64 framesRead = 0;
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while (wecan && framesRead < maxFrames) {
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QAudioRingBuffer::Region region = m_buffer->acquireReadRegion((maxFrames - framesRead) * m_bytesPerFrame);
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if (region.second > 0) {
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region.second -= region.second % m_bytesPerFrame;
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memcpy(data + (framesRead * m_bytesPerFrame), region.first, region.second);
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framesRead += region.second / m_bytesPerFrame;
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}
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else
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wecan = false;
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m_buffer->releaseReadRegion(region);
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}
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if (framesRead == 0 && m_deviceError)
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framesRead = -1;
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return framesRead;
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}
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qint64 writeBytes(const char* data, qint64 maxSize)
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{
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bool wecan = true;
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qint64 bytesWritten = 0;
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maxSize -= maxSize % m_bytesPerFrame;
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while (wecan && bytesWritten < maxSize) {
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QAudioRingBuffer::Region region = m_buffer->acquireWriteRegion(maxSize - bytesWritten);
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if (region.second > 0) {
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memcpy(region.first, data + bytesWritten, region.second);
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bytesWritten += region.second;
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}
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else
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wecan = false;
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m_buffer->releaseWriteRegion(region);
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}
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if (bytesWritten > 0)
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emit readyRead();
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return bytesWritten;
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}
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int available() const
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{
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return m_buffer->free();
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}
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void reset()
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{
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m_buffer->reset();
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m_deviceError = false;
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}
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void setPrefetchDevice(QIODevice* device)
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{
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if (m_device != device) {
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m_device = device;
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if (m_device != 0)
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fillBuffer();
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}
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}
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void startFillTimer()
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{
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if (m_device != 0)
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m_fillTimer->start(m_buffer->size() / 2 / m_maxPeriodSize * m_periodTime);
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}
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void stopFillTimer()
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{
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m_fillTimer->stop();
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}
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signals:
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void readyRead();
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private slots:
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void fillBuffer()
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{
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const int free = m_buffer->free();
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const int writeSize = free - (free % m_maxPeriodSize);
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if (writeSize > 0) {
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bool wecan = true;
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int filled = 0;
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while (!m_deviceError && wecan && filled < writeSize) {
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QAudioRingBuffer::Region region = m_buffer->acquireWriteRegion(writeSize - filled);
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if (region.second > 0) {
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region.second = m_device->read(region.first, region.second);
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if (region.second > 0)
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filled += region.second;
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else if (region.second == 0)
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wecan = false;
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else if (region.second < 0) {
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m_fillTimer->stop();
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region.second = 0;
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m_deviceError = true;
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}
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}
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else
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wecan = false;
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m_buffer->releaseWriteRegion(region);
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}
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if (filled > 0)
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emit readyRead();
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}
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}
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private:
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bool m_deviceError;
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int m_maxPeriodSize;
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int m_bytesPerFrame;
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int m_periodTime;
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QIODevice* m_device;
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QTimer* m_fillTimer;
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QAudioRingBuffer* m_buffer;
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};
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}
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class MacOutputDevice : public QIODevice
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{
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Q_OBJECT
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public:
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MacOutputDevice(QAudioOutputBuffer* audioBuffer, QObject* parent):
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QIODevice(parent),
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m_audioBuffer(audioBuffer)
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{
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open(QIODevice::WriteOnly | QIODevice::Unbuffered);
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}
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qint64 readData(char* data, qint64 len)
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{
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Q_UNUSED(data);
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Q_UNUSED(len);
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return 0;
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}
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qint64 writeData(const char* data, qint64 len)
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{
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return m_audioBuffer->writeBytes(data, len);
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}
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bool isSequential() const
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{
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return true;
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}
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private:
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QAudioOutputBuffer* m_audioBuffer;
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};
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QAudioOutputPrivate::QAudioOutputPrivate(const QByteArray& device, const QAudioFormat& format):
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audioFormat(format)
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{
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QDataStream ds(device);
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quint32 did, mode;
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ds >> did >> mode;
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if (QAudio::Mode(mode) == QAudio::AudioInput)
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errorCode = QAudio::OpenError;
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else {
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isOpen = false;
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audioDeviceId = AudioDeviceID(did);
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audioUnit = 0;
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audioIO = 0;
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startTime = 0;
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totalFrames = 0;
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audioBuffer = 0;
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internalBufferSize = default_buffer_size;
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clockFrequency = AudioGetHostClockFrequency() / 1000;
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errorCode = QAudio::NoError;
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stateCode = QAudio::StopState;
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audioThreadState = Stopped;
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intervalTimer = new QTimer(this);
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intervalTimer->setInterval(1000);
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connect(intervalTimer, SIGNAL(timeout()), SIGNAL(notify()));
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}
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}
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QAudioOutputPrivate::~QAudioOutputPrivate()
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{
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close();
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}
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bool QAudioOutputPrivate::open()
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{
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if (errorCode != QAudio::NoError)
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return false;
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if (isOpen)
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return true;
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ComponentDescription cd;
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cd.componentType = kAudioUnitType_Output;
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cd.componentSubType = kAudioUnitSubType_HALOutput;
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cd.componentManufacturer = kAudioUnitManufacturer_Apple;
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cd.componentFlags = 0;
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cd.componentFlagsMask = 0;
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// Open
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Component cp = FindNextComponent(NULL, &cd);
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if (cp == 0) {
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qWarning() << "QAudioOutput: Failed to find HAL Output component";
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return false;
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}
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if (OpenAComponent(cp, &audioUnit) != noErr) {
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qWarning() << "QAudioOutput: Unable to Open Output Component";
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return false;
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}
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// register callback
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AURenderCallbackStruct cb;
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cb.inputProc = renderCallback;
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cb.inputProcRefCon = this;
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if (AudioUnitSetProperty(audioUnit,
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kAudioUnitProperty_SetRenderCallback,
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kAudioUnitScope_Global,
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0,
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&cb,
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sizeof(cb)) != noErr) {
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qWarning() << "QAudioOutput: Failed to set AudioUnit callback";
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return false;
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}
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// Set Audio Device
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if (AudioUnitSetProperty(audioUnit,
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kAudioOutputUnitProperty_CurrentDevice,
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kAudioUnitScope_Global,
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0,
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&audioDeviceId,
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sizeof(audioDeviceId)) != noErr) {
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qWarning() << "QAudioOutput: Unable to use configured device";
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return false;
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}
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// Set stream format
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streamFormat = toAudioStreamBasicDescription(audioFormat);
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UInt32 size = sizeof(deviceFormat);
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if (AudioUnitGetProperty(audioUnit,
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kAudioUnitProperty_StreamFormat,
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kAudioUnitScope_Input,
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0,
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&deviceFormat,
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&size) != noErr) {
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qWarning() << "QAudioOutput: Unable to retrieve device format";
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return false;
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}
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if (AudioUnitSetProperty(audioUnit,
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kAudioUnitProperty_StreamFormat,
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kAudioUnitScope_Input,
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0,
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&streamFormat,
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sizeof(streamFormat)) != noErr) {
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qWarning() << "QAudioOutput: Unable to Set Stream information";
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return false;
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}
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381 |
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// Allocate buffer
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UInt32 numberOfFrames = 0;
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size = sizeof(UInt32);
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if (AudioUnitGetProperty(audioUnit,
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kAudioDevicePropertyBufferFrameSize,
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kAudioUnitScope_Global,
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0,
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&numberOfFrames,
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&size) != noErr) {
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qWarning() << "QAudioInput: Failed to get audio period size";
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392 |
return false;
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393 |
}
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394 |
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periodSizeBytes = (numberOfFrames * streamFormat.mSampleRate / deviceFormat.mSampleRate) *
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|
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streamFormat.mBytesPerFrame;
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397 |
if (internalBufferSize < periodSizeBytes * 2)
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internalBufferSize = periodSizeBytes * 2;
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else
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internalBufferSize -= internalBufferSize % streamFormat.mBytesPerFrame;
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401 |
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audioBuffer = new QAudioOutputBuffer(internalBufferSize, periodSizeBytes, audioFormat);
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connect(audioBuffer, SIGNAL(readyRead()), SLOT(inputReady())); // Pull
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404 |
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audioIO = new MacOutputDevice(audioBuffer, this);
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406 |
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// Init
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408 |
if (AudioUnitInitialize(audioUnit)) {
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409 |
qWarning() << "QAudioOutput: Failed to initialize AudioUnit";
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410 |
return false;
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|
411 |
}
|
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412 |
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413 |
isOpen = true;
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414 |
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415 |
return true;
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|
416 |
}
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|
417 |
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418 |
void QAudioOutputPrivate::close()
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|
419 |
{
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420 |
if (audioUnit != 0) {
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421 |
AudioOutputUnitStop(audioUnit);
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422 |
AudioUnitUninitialize(audioUnit);
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423 |
CloseComponent(audioUnit);
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424 |
}
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425 |
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delete audioBuffer;
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|
427 |
}
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|
428 |
|
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429 |
QAudioFormat QAudioOutputPrivate::format() const
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|
430 |
{
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431 |
return audioFormat;
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432 |
}
|
|
433 |
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434 |
QIODevice* QAudioOutputPrivate::start(QIODevice* device)
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|
435 |
{
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436 |
QIODevice* op = device;
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|
437 |
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|
438 |
if (!open()) {
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|
439 |
stateCode = QAudio::StopState;
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440 |
errorCode = QAudio::OpenError;
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|
441 |
return audioIO;
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|
442 |
}
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|
443 |
|
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444 |
reset();
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445 |
audioBuffer->reset();
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|
446 |
audioBuffer->setPrefetchDevice(op);
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447 |
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448 |
if (op == 0) {
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|
449 |
op = audioIO;
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|
450 |
stateCode = QAudio::IdleState;
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|
451 |
}
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|
452 |
else
|
|
453 |
stateCode = QAudio::ActiveState;
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|
454 |
|
|
455 |
// Start
|
|
456 |
errorCode = QAudio::NoError;
|
|
457 |
totalFrames = 0;
|
|
458 |
startTime = AudioGetCurrentHostTime();
|
|
459 |
|
|
460 |
if (stateCode == QAudio::ActiveState)
|
|
461 |
audioThreadStart();
|
|
462 |
|
|
463 |
emit stateChanged(stateCode);
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|
464 |
|
|
465 |
return op;
|
|
466 |
}
|
|
467 |
|
|
468 |
void QAudioOutputPrivate::stop()
|
|
469 |
{
|
|
470 |
QMutexLocker lock(&mutex);
|
|
471 |
if (stateCode != QAudio::StopState) {
|
|
472 |
audioThreadDrain();
|
|
473 |
|
|
474 |
stateCode = QAudio::StopState;
|
|
475 |
errorCode = QAudio::NoError;
|
|
476 |
QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
|
|
477 |
}
|
|
478 |
}
|
|
479 |
|
|
480 |
void QAudioOutputPrivate::reset()
|
|
481 |
{
|
|
482 |
QMutexLocker lock(&mutex);
|
|
483 |
if (stateCode != QAudio::StopState) {
|
|
484 |
audioThreadStop();
|
|
485 |
|
|
486 |
stateCode = QAudio::StopState;
|
|
487 |
errorCode = QAudio::NoError;
|
|
488 |
QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
|
|
489 |
}
|
|
490 |
}
|
|
491 |
|
|
492 |
void QAudioOutputPrivate::suspend()
|
|
493 |
{
|
|
494 |
QMutexLocker lock(&mutex);
|
|
495 |
if (stateCode == QAudio::ActiveState || stateCode == QAudio::IdleState) {
|
|
496 |
audioThreadStop();
|
|
497 |
|
|
498 |
stateCode = QAudio::SuspendState;
|
|
499 |
errorCode = QAudio::NoError;
|
|
500 |
QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
|
|
501 |
}
|
|
502 |
}
|
|
503 |
|
|
504 |
void QAudioOutputPrivate::resume()
|
|
505 |
{
|
|
506 |
QMutexLocker lock(&mutex);
|
|
507 |
if (stateCode == QAudio::SuspendState) {
|
|
508 |
audioThreadStart();
|
|
509 |
|
|
510 |
stateCode = QAudio::ActiveState;
|
|
511 |
errorCode = QAudio::NoError;
|
|
512 |
QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
|
|
513 |
}
|
|
514 |
}
|
|
515 |
|
|
516 |
int QAudioOutputPrivate::bytesFree() const
|
|
517 |
{
|
|
518 |
return audioBuffer->available();
|
|
519 |
}
|
|
520 |
|
|
521 |
int QAudioOutputPrivate::periodSize() const
|
|
522 |
{
|
|
523 |
return periodSizeBytes;
|
|
524 |
}
|
|
525 |
|
|
526 |
void QAudioOutputPrivate::setBufferSize(int bs)
|
|
527 |
{
|
|
528 |
if (stateCode == QAudio::StopState)
|
|
529 |
internalBufferSize = bs;
|
|
530 |
}
|
|
531 |
|
|
532 |
int QAudioOutputPrivate::bufferSize() const
|
|
533 |
{
|
|
534 |
return internalBufferSize;
|
|
535 |
}
|
|
536 |
|
|
537 |
void QAudioOutputPrivate::setNotifyInterval(int milliSeconds)
|
|
538 |
{
|
|
539 |
intervalTimer->setInterval(milliSeconds);
|
|
540 |
}
|
|
541 |
|
|
542 |
int QAudioOutputPrivate::notifyInterval() const
|
|
543 |
{
|
|
544 |
return intervalTimer->interval();
|
|
545 |
}
|
|
546 |
|
|
547 |
qint64 QAudioOutputPrivate::totalTime() const
|
|
548 |
{
|
|
549 |
return totalFrames * 1000000 / audioFormat.frequency();
|
|
550 |
}
|
|
551 |
|
|
552 |
qint64 QAudioOutputPrivate::clock() const
|
|
553 |
{
|
|
554 |
if (stateCode == QAudio::StopState)
|
|
555 |
return 0;
|
|
556 |
|
|
557 |
return (AudioGetCurrentHostTime() - startTime) / (clockFrequency / 1000);
|
|
558 |
}
|
|
559 |
|
|
560 |
QAudio::Error QAudioOutputPrivate::error() const
|
|
561 |
{
|
|
562 |
return errorCode;
|
|
563 |
}
|
|
564 |
|
|
565 |
QAudio::State QAudioOutputPrivate::state() const
|
|
566 |
{
|
|
567 |
return stateCode;
|
|
568 |
}
|
|
569 |
|
|
570 |
void QAudioOutputPrivate::audioThreadStart()
|
|
571 |
{
|
|
572 |
startTimers();
|
|
573 |
audioThreadState = Running;
|
|
574 |
AudioOutputUnitStart(audioUnit);
|
|
575 |
}
|
|
576 |
|
|
577 |
void QAudioOutputPrivate::audioThreadStop()
|
|
578 |
{
|
|
579 |
stopTimers();
|
|
580 |
if (audioThreadState.testAndSetAcquire(Running, Stopped))
|
|
581 |
threadFinished.wait(&mutex);
|
|
582 |
}
|
|
583 |
|
|
584 |
void QAudioOutputPrivate::audioThreadDrain()
|
|
585 |
{
|
|
586 |
stopTimers();
|
|
587 |
if (audioThreadState.testAndSetAcquire(Running, Draining))
|
|
588 |
threadFinished.wait(&mutex);
|
|
589 |
}
|
|
590 |
|
|
591 |
void QAudioOutputPrivate::audioDeviceStop()
|
|
592 |
{
|
|
593 |
AudioOutputUnitStop(audioUnit);
|
|
594 |
audioThreadState = Stopped;
|
|
595 |
threadFinished.wakeOne();
|
|
596 |
}
|
|
597 |
|
|
598 |
void QAudioOutputPrivate::audioDeviceIdle()
|
|
599 |
{
|
|
600 |
QMutexLocker lock(&mutex);
|
|
601 |
if (stateCode == QAudio::ActiveState) {
|
|
602 |
audioDeviceStop();
|
|
603 |
|
|
604 |
errorCode = QAudio::UnderrunError;
|
|
605 |
stateCode = QAudio::IdleState;
|
|
606 |
QMetaObject::invokeMethod(this, "deviceStopped", Qt::QueuedConnection);
|
|
607 |
}
|
|
608 |
}
|
|
609 |
|
|
610 |
void QAudioOutputPrivate::audioDeviceError()
|
|
611 |
{
|
|
612 |
QMutexLocker lock(&mutex);
|
|
613 |
if (stateCode == QAudio::ActiveState) {
|
|
614 |
audioDeviceStop();
|
|
615 |
|
|
616 |
errorCode = QAudio::IOError;
|
|
617 |
stateCode = QAudio::StopState;
|
|
618 |
QMetaObject::invokeMethod(this, "deviceStopped", Qt::QueuedConnection);
|
|
619 |
}
|
|
620 |
}
|
|
621 |
|
|
622 |
void QAudioOutputPrivate::startTimers()
|
|
623 |
{
|
|
624 |
audioBuffer->startFillTimer();
|
|
625 |
intervalTimer->start();
|
|
626 |
}
|
|
627 |
|
|
628 |
void QAudioOutputPrivate::stopTimers()
|
|
629 |
{
|
|
630 |
audioBuffer->stopFillTimer();
|
|
631 |
intervalTimer->stop();
|
|
632 |
}
|
|
633 |
|
|
634 |
|
|
635 |
void QAudioOutputPrivate::deviceStopped()
|
|
636 |
{
|
|
637 |
intervalTimer->stop();
|
|
638 |
emit stateChanged(stateCode);
|
|
639 |
}
|
|
640 |
|
|
641 |
void QAudioOutputPrivate::inputReady()
|
|
642 |
{
|
|
643 |
QMutexLocker lock(&mutex);
|
|
644 |
if (stateCode == QAudio::IdleState) {
|
|
645 |
audioThreadStart();
|
|
646 |
|
|
647 |
stateCode = QAudio::ActiveState;
|
|
648 |
errorCode = QAudio::NoError;
|
|
649 |
|
|
650 |
QMetaObject::invokeMethod(this, "stateChanged", Qt::QueuedConnection, Q_ARG(QAudio::State, stateCode));
|
|
651 |
}
|
|
652 |
}
|
|
653 |
|
|
654 |
|
|
655 |
OSStatus QAudioOutputPrivate::renderCallback(void* inRefCon,
|
|
656 |
AudioUnitRenderActionFlags* ioActionFlags,
|
|
657 |
const AudioTimeStamp* inTimeStamp,
|
|
658 |
UInt32 inBusNumber,
|
|
659 |
UInt32 inNumberFrames,
|
|
660 |
AudioBufferList* ioData)
|
|
661 |
{
|
|
662 |
Q_UNUSED(ioActionFlags)
|
|
663 |
Q_UNUSED(inTimeStamp)
|
|
664 |
Q_UNUSED(inBusNumber)
|
|
665 |
Q_UNUSED(inNumberFrames)
|
|
666 |
|
|
667 |
QAudioOutputPrivate* d = static_cast<QAudioOutputPrivate*>(inRefCon);
|
|
668 |
|
|
669 |
const int threadState = d->audioThreadState.fetchAndAddAcquire(0);
|
|
670 |
if (threadState == Stopped) {
|
|
671 |
ioData->mBuffers[0].mDataByteSize = 0;
|
|
672 |
d->audioDeviceStop();
|
|
673 |
}
|
|
674 |
else {
|
|
675 |
const UInt32 bytesPerFrame = d->streamFormat.mBytesPerFrame;
|
|
676 |
qint64 framesRead;
|
|
677 |
|
|
678 |
framesRead = d->audioBuffer->readFrames((char*)ioData->mBuffers[0].mData,
|
|
679 |
ioData->mBuffers[0].mDataByteSize / bytesPerFrame);
|
|
680 |
|
|
681 |
if (framesRead > 0) {
|
|
682 |
ioData->mBuffers[0].mDataByteSize = framesRead * bytesPerFrame;
|
|
683 |
d->totalFrames += framesRead;
|
|
684 |
}
|
|
685 |
else {
|
|
686 |
ioData->mBuffers[0].mDataByteSize = 0;
|
|
687 |
if (framesRead == 0) {
|
|
688 |
if (threadState == Draining)
|
|
689 |
d->audioDeviceStop();
|
|
690 |
else
|
|
691 |
d->audioDeviceIdle();
|
|
692 |
}
|
|
693 |
else
|
|
694 |
d->audioDeviceError();
|
|
695 |
}
|
|
696 |
}
|
|
697 |
|
|
698 |
return noErr;
|
|
699 |
}
|
|
700 |
|
|
701 |
|
|
702 |
QT_END_NAMESPACE
|
|
703 |
|
|
704 |
#include "qaudiooutput_mac_p.moc"
|
|
705 |
|