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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef IOSAUDIOOUTPUT_H
#define IOSAUDIOOUTPUT_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <private/qaudiosystem_p.h>
#if defined(Q_OS_OSX)
# include <CoreAudio/CoreAudio.h>
#endif
#include <AudioUnit/AudioUnit.h>
#include <CoreAudio/CoreAudioTypes.h>
#include <QtCore/QIODevice>
#include <QtCore/QWaitCondition>
#include <QtCore/QMutex>
#include <qdarwinaudiodevice_p.h>
QT_BEGIN_NAMESPACE
class QDarwinAudioSinkBuffer;
class QTimer;
class QCoreAudioDeviceInfo;
class CoreAudioRingBuffer;
class QDarwinAudioSinkBuffer : public QObject
{
Q_OBJECT
public:
QDarwinAudioSinkBuffer(int bufferSize, int maxPeriodSize, QAudioFormat const& audioFormat);
~QDarwinAudioSinkBuffer();
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 QDarwinAudioSinkDevice : public QIODevice
{
public:
QDarwinAudioSinkDevice(QDarwinAudioSinkBuffer *audioBuffer, QObject *parent);
qint64 readData(char *data, qint64 len);
qint64 writeData(const char *data, qint64 len);
bool isSequential() const { return true; }
private:
QDarwinAudioSinkBuffer *m_audioBuffer;
};
class QDarwinAudioSink : public QPlatformAudioSink
{
Q_OBJECT
public:
QDarwinAudioSink(const QAudioDevice &device);
~QDarwinAudioSink();
void start(QIODevice *device);
QIODevice *start();
void stop();
void reset();
void suspend();
void resume();
qsizetype bytesFree() const;
void setBufferSize(qsizetype value);
qsizetype bufferSize() const;
qint64 processedUSecs() const;
QAudio::Error error() const;
QAudio::State state() const;
void setFormat(const QAudioFormat &format);
QAudioFormat format() const;
void setVolume(qreal volume);
qreal volume() 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();
QAudioDevice m_audioDeviceInfo;
QByteArray m_device;
static constexpr int DEFAULT_BUFFER_SIZE = 8 * 1024;
bool m_isOpen = false;
int m_internalBufferSize = DEFAULT_BUFFER_SIZE;
int m_periodSizeBytes = 0;
qint64 m_totalFrames = 0;
QAudioFormat m_audioFormat;
QIODevice *m_audioIO = nullptr;
#if defined(Q_OS_MACOS)
AudioDeviceID m_audioDeviceId;
#endif
AudioUnit m_audioUnit = 0;
Float64 m_clockFrequency = 0;
AudioStreamBasicDescription m_streamFormat;
QDarwinAudioSinkBuffer *m_audioBuffer = nullptr;
QAtomicInt m_audioThreadState;
QWaitCondition m_threadFinished;
QMutex m_mutex;
qreal m_cachedVolume = 1.;
#if defined(Q_OS_MACOS)
qreal m_volume = 1.;
#endif
bool m_pullMode = false;
QAudio::Error m_errorCode = QAudio::NoError;
QAudio::State m_stateCode = QAudio::StoppedState;
};
QT_END_NAMESPACE
#endif // IOSAUDIOOUTPUT_H
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