Playback类 参考

负责输出视频和音频(不含视频预览). 更多...

#include <playback.hpp>

类 Playback 继承关系图:

信号
void	startWork (QPrivateSignal)
void	stopWork (QPrivateSignal)
void	clearRingBuffer (QPrivateSignal)
void	setAudioStartPoint (qreal startPoint, QPrivateSignal)
void	setAudioVolume (qreal volume, QPrivateSignal)
void	setAudioPitch (qreal pitch, QPrivateSignal)
void	setAudioSpeed (qreal speed, QPrivateSignal)
void	signalSetSelectedAudioOutputDevice (QString)
void	signalDeviceSwitched ()
void	showFirstVideoFrame (QPrivateSignal)
void	clearCacheVideoFrame (QPrivateSignal)
void	setPicture (VideoFrameRef pic)
void	stateChanged (bool isPlaying)
void	resourcesEnd ()
void	signalAudioOutputDevicesListChanged ()
void	requestResynchronization (bool enableAudio, bool updateAudioFormat)

Public 成员函数
	Playback (Demuxer *demuxer, QObject *parent)
PONY_THREAD_SAFE qreal	getPreferablePos ()
PonyAudioFormat	getDeviceFormat ()
qreal	getAudioPos (bool backward) const
void	setDesiredFormat (const PonyAudioFormat &format)
virtual	~Playback ()
void	setVolume (qreal volume)
void	setPitch (qreal pitch)
void	setSpeed (qreal speed)
void	setSelectedAudioOutputDevice (QString deviceName)
QString	getSelectedAudioOutputDevice ()
void	showFrame ()
void	clearCacheFrame ()
bool	isPlaying ()
bool	isInterrupted ()
void	setStartPoint (qreal startPoint)
void	start ()
void	clear ()
void	pause ()
void	stop ()
QStringList	getAudioDeviceList ()
qreal	getPitch ()

详细描述

负责输出视频和音频(不含视频预览).

这个类负责将上层的帧输出到相应的设备. 这个类的RAII的. 如果没有特殊说明, 这个类的公有方法是线程安全的.

构造及析构函数说明

Playback()

Playback::Playback ( Demuxer *  demuxer, QObject *  parent  )

inline

~Playback()

virtual Playback::~Playback ( )

inlinevirtual

成员函数说明

clear()

void Playback::clear ( )

inline

清空内部缓冲区, 需要保证此刻没有读写操作.

clearCacheFrame()

void Playback::clearCacheFrame ( )

inline

clearCacheVideoFrame

void Playback::clearCacheVideoFrame ( QPrivateSignal  )

signal

clearRingBuffer

void Playback::clearRingBuffer ( QPrivateSignal  )

signal

getAudioDeviceList()

QStringList Playback::getAudioDeviceList ( )

inline

getAudioPos()

qreal Playback::getAudioPos ( bool  backward ) const

inline

getDeviceFormat()

PonyAudioFormat Playback::getDeviceFormat ( )

inline

getPitch()

qreal Playback::getPitch ( )

inline

getPreferablePos()

PONY_THREAD_SAFE qreal Playback::getPreferablePos ( )

inline

getSelectedAudioOutputDevice()

QString Playback::getSelectedAudioOutputDevice ( )

inline

isInterrupted()

bool Playback::isInterrupted ( )

inline

是否请求停止

返回

状态

isPlaying()

bool Playback::isPlaying ( )

inline

是否正在播放

返回

状态

pause()

void Playback::pause ( )

inline

尽快暂停处理, 这个方法将会阻塞直到当前工作停止. 这个方法不会丢失数据.

requestResynchronization

void Playback::requestResynchronization ( bool  enableAudio, bool  updateAudioFormat  )

signal

由于设备切换, 音频倍速调整等原因需要下层重新同步

resourcesEnd

void Playback::resourcesEnd ( )

signal

setAudioPitch

void Playback::setAudioPitch ( qreal  pitch, QPrivateSignal    )

signal

setAudioSpeed

void Playback::setAudioSpeed ( qreal  speed, QPrivateSignal    )

signal

setAudioStartPoint

void Playback::setAudioStartPoint ( qreal  startPoint, QPrivateSignal    )

signal

setAudioVolume

void Playback::setAudioVolume ( qreal  volume, QPrivateSignal    )

signal

setDesiredFormat()

void Playback::setDesiredFormat ( const PonyAudioFormat &  format )

inline

setPicture

void Playback::setPicture ( VideoFrameRef  pic )

signal

setPitch()

void Playback::setPitch ( qreal  pitch )

inline

setSelectedAudioOutputDevice()

void Playback::setSelectedAudioOutputDevice ( QString  deviceName )

inline

setSpeed()

void Playback::setSpeed ( qreal  speed )

inline

setStartPoint()

void Playback::setStartPoint ( qreal  startPoint )

inline

setVolume()

void Playback::setVolume ( qreal  volume )

inline

showFirstVideoFrame

void Playback::showFirstVideoFrame ( QPrivateSignal  )

signal

showFrame()

void Playback::showFrame ( )

inline

signalAudioOutputDevicesListChanged

void Playback::signalAudioOutputDevicesListChanged ( )

signal

signalDeviceSwitched

void Playback::signalDeviceSwitched ( )

signal

signalSetSelectedAudioOutputDevice

void Playback::signalSetSelectedAudioOutputDevice ( QString  )

signal

start()

void Playback::start ( )

inline

开始进行处理, 发送信号后方法将立即返回.

startWork

void Playback::startWork ( QPrivateSignal  )

signal

stateChanged

void Playback::stateChanged ( bool  isPlaying )

signal

stop()

void Playback::stop ( )

inline

立即停止, 清空缓冲区的数据.

stopWork

void Playback::stopWork ( QPrivateSignal  )

signal

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该类的文档由以下文件生成:

• src/player/playback.hpp