fixedsizeaudiobuffer.h

rtp在linux下的实现

// FixedSizeAudioBuffer.h: interface for the FixedSizeAudioBuffer class.
//
//////////////////////////////////////////////////////////////////////

#ifndef AFX_FIXEDSIZEAUDIOBUFFER_H__389EBF68_48E8_4B98_AF05_D42F438579C7__INCLUDED_
#define AFX_FIXEDSIZEAUDIOBUFFER_H__389EBF68_48E8_4B98_AF05_D42F438579C7__INCLUDED_

#include <vector>
#include <map>
#include "AudioTransformer.h"
#include "WaveFormats.h"
#ifndef WIN32
#include "linTypes.h"
#endif

class FixedSizeAudioBuffer : public AudioTransformer  
{
public:
	FixedSizeAudioBuffer();
	virtual ~FixedSizeAudioBuffer();
	int SetOutputDuration(int duration);	// duration in milliseconds
	virtual int StartTransform();
	virtual int StopTransform();
	int SetTraceLevel();
protected:
	virtual int RenderAudioSamples(std::vector<std::pair<AudioSample *, AudioSource *> > &data);
	virtual int GenerateData(AudioSample **ppAudioSample);
	virtual int TransformAudioSamples(std::vector<std::pair<AudioSample *, AudioSource *> > &data, AudioSample **ppAudioSample);
        int GiveNextAudioSample(AudioSample **ppAudioSample, AudioSink *audioSink);
private:
	int EnqueuePacket(std::vector<std::pair<AudioSample *, AudioSource *> > &data);
private:
	int outputDuration;
	int outputSize;
	int minFrameDuration;
	int minFrameSize;
	WAVEFORMATEX audioFormat;
	bool bRunning;
	CRITICAL_SECTION audioBufferMutex;
#ifdef WIN32
	typedef std::vector<char> AUDIOBUFFER;
	AUDIOBUFFER audioBuffer;
#else
        typedef std::vector<char> AUDIOBUFFER;
        AUDIOBUFFER audioBuffer;
        std::map<AudioSink*, AUDIOBUFFER> myAudioBufferMap;
#endif
};

#endif // !defined(AFX_FIXEDSIZEAUDIOBUFFER_H__389EBF68_48E8_4B98_AF05_D42F438579C7__INCLUDED_)