pes.h

来自「这是一个SIGMA方案的PMP播放器的UCLINUX程序,可播放DVD,VCD,」· C头文件 代码 · 共 98 行

#ifndef _PES_H
#define _PES_H

#include "basic.h"

#define SCR_VALID_FLAG	1
#define PTS_VALID_FLAG	2
#define DTS_VALID_FLAG	4

typedef void (*PESCallback)(BYTE *pData, DWORD Length, BYTE StreamId, BYTE SubStreamId, 
	MPEG_TIMESTAMP Pts, MPEG_TIMESTAMP Dts, BYTE Flags, QWORD PESOffset, void *Context);

typedef void (*PSMCallback) (BYTE streamType, BYTE streamId, void *Context);

// This callback is invoked for AC3 and DTS streams muxed in DVD VOB streams.
typedef void (*AC3DTSCallback) (BYTE numberOfFrameHeaders, 
				WORD firstAccessUnitPointer, 
				void *Context);
typedef void (*LPCMCallback) (BYTE numberOfFrameHeaders,
			      WORD firstAccessUnitPointer,
			      DWORD frequency,
			      BYTE numberOfChannels,
			      BYTE quantizationWordLength,
			      void *context);

#ifdef CARIBBEAN
class PESDemux: public RMdemuxBase
#else
class PESDemux
#endif // CARIBBEAN
{	
public:
	PESDemux ();
	~PESDemux ();

	PESCallback     m_Callback;            // PES payload callback.
	PSMCallback     m_PSMCallback;         // PSM callback.
	AC3DTSCallback  m_ac3dtsCallback;      // Audio Callback.
	LPCMCallback    m_lpcmCallback;        // LPCM callback.
	void *          m_Context;             // Context to be returned with the callback.
	BOOL		m_IsDVDStream;         // set this to TRUE if the input is a DVD stream

	void Reset (void);
	DWORD Demux (BYTE *pBuffer, DWORD dwBufferLength);
	void ResetState (void);

 private:
	int StartCodeSubStateHandling (BYTE *pBuffer, DWORD dwBufferLength);
	int PESPacketIdentificationSubStateHandling (BYTE *pBuffer, DWORD dwBufferLength);
	int GenericPESSubStateHandling (BYTE *pBuffer, DWORD dwBufferLength);
	DWORD PSMPESSubStateHandling (BYTE *pBuffer, DWORD dwBufferLength);
	int SpecialPESSubStateHandling (BYTE *pBuffer, DWORD dwBufferLength);
	int ProcessingDataSubStateHandling (BYTE *pBuffer, DWORD dwBufferLength);
	int PackHeaderHandling (BYTE *pBuffer, DWORD dwBufferLength);
	int SystemHeaderHandling (BYTE *pBuffer, DWORD dwBufferLength);

 private:
	int	m_State;
	int	m_SubState;
	int	m_NextState;
	int     m_NextSubState;
	int	m_BytesProcessed;
	BYTE    m_StreamId;
	int	m_TotalBytesSkipped;
	int	m_DataLength;
	int	m_PESPacketLength;
	BYTE	m_PesHeaderByte0;
	BYTE	m_PesHeaderByte1;
	BYTE	m_PesHeaderLength;
	BYTE	m_BytesToSkip;
	BYTE	m_Flags;
	MPEG_TIMESTAMP m_Pts;
	MPEG_TIMESTAMP m_Dts;
	// for mpeg-2 program layer
	MPEG_TIMESTAMP m_Scr;
	DWORD	m_ProgramMuxRate;
	BYTE	m_PackStuffingBytes;	
	// for DVD vob files
	BYTE	m_SubStreamId;

	// PSM parsed data.
	BYTE m_elementaryStreamId;
	BYTE m_elementaryStreamType;
	WORD m_elementaryStreamMapLength;
	WORD m_elementaryStreamInfoLength;
	WORD m_programStreamInfoLength;
	DWORD m_mapCRC;

	// DVD audio data.
	BYTE m_nFrameHeaders;
	WORD m_firstAccessUnitPointer;
	
	QWORD m_PESOffset;

};

#endif