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Diffstat (limited to 'src/plugins/coreaudio/coreaudiooutput.h')
| -rw-r--r-- | src/plugins/coreaudio/coreaudiooutput.h | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/src/plugins/coreaudio/coreaudiooutput.h b/src/plugins/coreaudio/coreaudiooutput.h new file mode 100644 index 000000000..d4636e052 --- /dev/null +++ b/src/plugins/coreaudio/coreaudiooutput.h @@ -0,0 +1,204 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** 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, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#ifndef IOSAUDIOOUTPUT_H +#define IOSAUDIOOUTPUT_H + +#include <qaudiosystem.h> + +#if defined(Q_OS_OSX) +# include <CoreAudio/CoreAudio.h> +#endif +#include <AudioUnit/AudioUnit.h> +#include <CoreAudio/CoreAudioTypes.h> + +#include <QtCore/QWaitCondition> +#include <QtCore/QMutex> + +QT_BEGIN_NAMESPACE + +class CoreAudioOutputBuffer; +class QTimer; +class CoreAudioDeviceInfo; +class CoreAudioRingBuffer; + +class CoreAudioOutputBuffer : public QObject +{ + Q_OBJECT + +public: + CoreAudioOutputBuffer(int bufferSize, int maxPeriodSize, QAudioFormat const& audioFormat); + ~CoreAudioOutputBuffer(); + + qint64 readFrames(char *data, qint64 maxFrames); + qint64 writeBytes(const char *data, qint64 maxSize); + + int available() const; + void reset(); + + void setPrefetchDevice(QIODevice *device); + + void startFillTimer(); + void stopFillTimer(); + +signals: + void readyRead(); + +private slots: + void fillBuffer(); + +private: + bool m_deviceError; + int m_maxPeriodSize; + int m_bytesPerFrame; + int m_periodTime; + QIODevice *m_device; + QTimer *m_fillTimer; + CoreAudioRingBuffer *m_buffer; +}; + +class CoreAudioOutputDevice : public QIODevice +{ +public: + CoreAudioOutputDevice(CoreAudioOutputBuffer *audioBuffer, QObject *parent); + + qint64 readData(char *data, qint64 len); + qint64 writeData(const char *data, qint64 len); + + bool isSequential() const { return true; } + +private: + CoreAudioOutputBuffer *m_audioBuffer; +}; + + +class CoreAudioOutput : public QAbstractAudioOutput +{ + Q_OBJECT + +public: + CoreAudioOutput(const QByteArray &device); + ~CoreAudioOutput(); + + void start(QIODevice *device); + QIODevice *start(); + 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; + void setFormat(const QAudioFormat &format); + QAudioFormat format() const; + + void setVolume(qreal volume); + qreal volume() const; + + void setCategory(const QString &category); + QString category() const; + +private slots: + void deviceStopped(); + void inputReady(); + +private: + enum { + Running, + Draining, + Stopped + }; + + static OSStatus renderCallback(void *inRefCon, + AudioUnitRenderActionFlags *ioActionFlags, + const AudioTimeStamp *inTimeStamp, + UInt32 inBusNumber, + UInt32 inNumberFrames, + AudioBufferList *ioData); + + bool open(); + void close(); + void audioThreadStart(); + void audioThreadStop(); + void audioThreadDrain(); + void audioDeviceStop(); + void audioDeviceIdle(); + void audioDeviceError(); + + void startTimers(); + void stopTimers(); + + QByteArray m_device; + + bool m_isOpen; + int m_internalBufferSize; + int m_periodSizeBytes; + qint64 m_totalFrames; + QAudioFormat m_audioFormat; + QIODevice *m_audioIO; +#if defined(Q_OS_OSX) + AudioDeviceID m_audioDeviceId; +#endif + AudioUnit m_audioUnit; + Float64 m_clockFrequency; + UInt64 m_startTime; + AudioStreamBasicDescription m_streamFormat; + CoreAudioOutputBuffer *m_audioBuffer; + QAtomicInt m_audioThreadState; + QWaitCondition m_threadFinished; + QMutex m_mutex; + QTimer *m_intervalTimer; + CoreAudioDeviceInfo *m_audioDeviceInfo; + qreal m_cachedVolume; + + QAudio::Error m_errorCode; + QAudio::State m_stateCode; +}; + +QT_END_NAMESPACE + +#endif // IOSAUDIOOUTPUT_H |