OpalAudioStreamMixer Class Reference

#include <opalmixer.h>

Inheritance diagram for OpalAudioStreamMixer:

Collaboration diagram for OpalAudioStreamMixer:

Data Structures
struct	CachedAudio

Public Member Functions
	OpalAudioStreamMixer (const OpalMixerNodeInfo &info)
	~OpalAudioStreamMixer ()
virtual bool	OnPush ()
Public Member Functions inherited from OpalAudioMixer
	OpalAudioMixer (bool stereo=false, unsigned sampleRate=OpalMediaFormat::AudioClockRate, bool pushThread=true, unsigned period=10)
	~OpalAudioMixer ()
virtual void	RemoveStream (const Key_T &key)
virtual void	RemoveAllStreams ()
bool	IsStereo () const
unsigned	GetSampleRate () const
bool	SetSampleRate (unsigned rate)
bool	SetJitterBufferSize (const Key_T &key, const OpalJitterBuffer::Init &init)
Public Member Functions inherited from OpalBaseMixer
	OpalBaseMixer (bool pushThread, unsigned periodMS, unsigned periodTS)
virtual	~OpalBaseMixer ()
virtual bool	AddStream (const Key_T &key)
virtual bool	WriteStream (const Key_T &key, const RTP_DataFrame &input)
virtual RTP_DataFrame *	ReadMixed ()
virtual bool	ReadMixed (RTP_DataFrame &mixed)
virtual bool	OnMixed (RTP_DataFrame *&mixed)
virtual void	StartPushThread ()
void	StopPushThread (bool lock=true)
unsigned	GetPeriodMS () const
unsigned	GetPeriodTS () const
Public Member Functions inherited from OpalMediaStreamMixer
	OpalMediaStreamMixer ()
void	Append (const PSafePtr< OpalMixerMediaStream > &stream)
void	Remove (const PSafePtr< OpalMixerMediaStream > &stream)
void	CloseOne (const PSafePtr< OpalMixerMediaStream > &stream)

Protected Member Functions
void	PushOne (PSafePtr< OpalMixerMediaStream > &stream, CachedAudio &cache, const short *audioToSubtract)
Protected Member Functions inherited from OpalAudioMixer
virtual Stream *	CreateStream ()
virtual bool	MixStreams (RTP_DataFrame &frame)
virtual size_t	GetOutputSize () const
void	PreMixStreams ()
void	MixStereo (RTP_DataFrame &frame)
void	MixAdditive (RTP_DataFrame &frame, const short *audioToSubtract)
Protected Member Functions inherited from OpalBaseMixer
void	PushThreadMain ()
	PDECLARE_MUTEX (m_mutex)

Protected Attributes
std::map< PString, CachedAudio >	m_cache
Protected Attributes inherited from OpalAudioMixer
bool	m_stereo
unsigned	m_sampleRate
AudioStream *	m_left
AudioStream *	m_right
std::vector< int >	m_mixedAudio
Protected Attributes inherited from OpalBaseMixer
bool	m_pushThread
unsigned	m_periodMS
unsigned	m_periodTS
StreamMap_T	m_inputStreams
unsigned	m_outputTimestamp
RTP_DataFrame *	m_pushFrame
PThread *	m_workerThread
bool	m_threadRunning
Protected Attributes inherited from OpalMediaStreamMixer
StreamDict	m_outputStreams

Additional Inherited Members
Public Types inherited from OpalBaseMixer
typedef PString	Key_T
Protected Types inherited from OpalBaseMixer
typedef std::map< Key_T, Stream * >	StreamMap_T
Protected Types inherited from OpalMediaStreamMixer
typedef PSafeDictionary < PString, OpalMixerMediaStream >	StreamDict

Detailed Description

Audio mixer. This class represents the store for the mixed audio.

Constructor & Destructor Documentation

OpalAudioStreamMixer::OpalAudioStreamMixer

(

const OpalMixerNodeInfo &

info

)

OpalAudioStreamMixer::~OpalAudioStreamMixer

(

)

Member Function Documentation

virtual bool OpalAudioStreamMixer::OnPush ( )

virtual

Push collected input through the mixer to output. This would normally be called from a thread, on a metronomic basis, from a thread started via StartPushThread(), however if m_pushThread is false, that thread is suppressed and it is expected the application would call this function as required.

Reimplemented from OpalBaseMixer.

void OpalAudioStreamMixer::PushOne ( PSafePtr< OpalMixerMediaStream > &  stream, CachedAudio &  cache, const short *  audioToSubtract  )

protected

Field Documentation

std::map<PString, CachedAudio> OpalAudioStreamMixer::m_cache

protected

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The documentation for this class was generated from the following file:

• opalmixer.h