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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 IOSAUDIOINPUT_H
#define IOSAUDIOINPUT_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>
#include <qdarwinaudiodevice_p.h>
#include <AudioUnit/AudioUnit.h>
#include <CoreAudio/CoreAudioTypes.h>
#include <AudioToolbox/AudioToolbox.h>
#include <QtCore/QIODevice>
#include <QtCore/QWaitCondition>
#include <QtCore/QMutex>
#include <QtCore/QTimer>
QT_BEGIN_NAMESPACE
class CoreAudioRingBuffer;
class QCoreAudioPacketFeeder;
class QDarwinAudioSourceBuffer;
class QDarwinAudioSourceDevice;
class QCoreAudioBufferList
{
public:
QCoreAudioBufferList(AudioStreamBasicDescription const& streamFormat);
QCoreAudioBufferList(AudioStreamBasicDescription const& streamFormat, char *buffer, int bufferSize);
QCoreAudioBufferList(AudioStreamBasicDescription const& streamFormat, int framesToBuffer);
~QCoreAudioBufferList();
AudioBufferList* audioBufferList() const { return m_bufferList; }
char *data(int buffer = 0) const;
qint64 bufferSize(int buffer = 0) const;
int frameCount(int buffer = 0) const;
int packetCount(int buffer = 0) const;
int packetSize() const;
void reset();
private:
bool m_owner;
int m_dataSize;
AudioStreamBasicDescription m_streamDescription;
AudioBufferList *m_bufferList;
};
class QCoreAudioPacketFeeder
{
public:
QCoreAudioPacketFeeder(QCoreAudioBufferList *abl);
bool feed(AudioBufferList& dst, UInt32& packetCount);
bool empty() const;
private:
UInt32 m_totalPackets;
UInt32 m_position;
QCoreAudioBufferList *m_audioBufferList;
};
class QDarwinAudioSourceBuffer : public QObject
{
Q_OBJECT
public:
QDarwinAudioSourceBuffer(int bufferSize,
int maxPeriodSize,
AudioStreamBasicDescription const& inputFormat,
AudioStreamBasicDescription const& outputFormat,
QObject *parent);
~QDarwinAudioSourceBuffer();
qreal volume() const;
void setVolume(qreal v);
qint64 renderFromDevice(AudioUnit audioUnit,
AudioUnitRenderActionFlags *ioActionFlags,
const AudioTimeStamp *inTimeStamp,
UInt32 inBusNumber,
UInt32 inNumberFrames);
qint64 readBytes(char *data, qint64 len);
void setFlushDevice(QIODevice *device);
void startFlushTimer();
void stopFlushTimer();
void flush(bool all = false);
void reset();
int available() const;
int used() const;
void lock() { m_mutex.lock(); }
void unlock() { m_mutex.unlock(); }
void wait() { m_threadFinished.wait(&m_mutex); }
void wake() { m_threadFinished.wakeOne(); }
signals:
void readyRead();
private slots:
void flushBuffer();
private:
QMutex m_mutex;
QWaitCondition m_threadFinished;
bool m_deviceError;
int m_maxPeriodSize;
int m_periodTime;
QIODevice *m_device;
QTimer *m_flushTimer;
CoreAudioRingBuffer *m_buffer;
QCoreAudioBufferList *m_inputBufferList;
AudioConverterRef m_audioConverter;
AudioStreamBasicDescription m_inputFormat;
AudioStreamBasicDescription m_outputFormat;
QAudioFormat m_qFormat;
qreal m_volume;
const static OSStatus as_empty = 'qtem';
// Converter callback
static OSStatus converterCallback(AudioConverterRef inAudioConverter,
UInt32 *ioNumberDataPackets,
AudioBufferList *ioData,
AudioStreamPacketDescription **outDataPacketDescription,
void *inUserData);
};
class QDarwinAudioSourceDevice : public QIODevice
{
Q_OBJECT
public:
QDarwinAudioSourceDevice(QDarwinAudioSourceBuffer *audioBuffer, QObject *parent);
qint64 readData(char *data, qint64 len);
qint64 writeData(const char *data, qint64 len);
bool isSequential() const { return true; }
private:
QDarwinAudioSourceBuffer *m_audioBuffer;
};
class QDarwinAudioSource : public QPlatformAudioSource
{
Q_OBJECT
public:
QDarwinAudioSource(const QAudioDevice &device);
~QDarwinAudioSource();
void start(QIODevice *device);
QIODevice *start();
void stop();
void reset();
void suspend();
void resume();
qsizetype bytesReady() 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 deviceStoppped();
private:
enum {
Running,
Stopped
};
bool open();
void close();
void audioThreadStart();
void audioThreadStop();
void audioDeviceStop();
void audioDeviceActive();
void audioDeviceFull();
void audioDeviceError();
void startTimers();
void stopTimers();
// Input callback
static OSStatus inputCallback(void *inRefCon,
AudioUnitRenderActionFlags *ioActionFlags,
const AudioTimeStamp *inTimeStamp,
UInt32 inBusNumber,
UInt32 inNumberFrames,
AudioBufferList *ioData);
QAudioDevice m_audioDeviceInfo;
QByteArray m_device;
bool m_isOpen;
int m_periodSizeBytes;
int m_internalBufferSize;
qint64 m_totalFrames;
QAudioFormat m_audioFormat;
QIODevice *m_audioIO;
AudioUnit m_audioUnit;
#if defined(Q_OS_OSX)
AudioDeviceID m_audioDeviceId;
#endif
Float64 m_clockFrequency;
QAudio::Error m_errorCode;
QAudio::State m_stateCode;
QDarwinAudioSourceBuffer *m_audioBuffer;
QAtomicInt m_audioThreadState;
AudioStreamBasicDescription m_streamFormat;
AudioStreamBasicDescription m_deviceFormat;
qreal m_volume;
};
QT_END_NAMESPACE
#endif // IOSAUDIOINPUT_H
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