www.pudn.com > XvidQP.rar > AudioSource.h

//	VirtualDub - Video processing and capture application 
//	Copyright (C) 1998-2001 Avery Lee 
// 
//	This program is free software; you can redistribute it and/or modify 
//	it under the terms of the GNU General Public License as published by 
//	the Free Software Foundation; either version 2 of the License, or 
//	(at your option) any later version. 
// 
//	This program is distributed in the hope that it will be useful, 
//	but WITHOUT ANY WARRANTY; without even the implied warranty of 
//	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
//	GNU General Public License for more details. 
// 
//	You should have received a copy of the GNU General Public License 
//	along with this program; if not, write to the Free Software 
//	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 
 
#ifndef f_AUDIOSOURCE_H 
#define f_AUDIOSOURCE_H 
 
#include  
 
#include  
#include  
 
#include "DubSource.h" 
 
#include "all.h" 
#include "crc.h" 
//#include "mibitstr.h" 
#include "header.h" 
 
#include "codec.h" 
 
class IAVIReadHandler; 
class IAVIReadStream; 
 
class AudioSource : public DubSource { 
public: 
	WAVEFORMATEX *getWaveFormat() { 
		return (WAVEFORMATEX *)getFormat(); 
	} 
}; 
 
class AudioSourceWAV : public AudioSource { 
private: 
	HMMIO				hmmioFile; 
	MMCKINFO			chunkRIFF; 
	MMCKINFO			chunkDATA; 
	LONG				lCurrentSample; 
	LONG				bytesPerSample; 
 
public: 
	AudioSourceWAV(char *fn, LONG inputBufferSize); 
	~AudioSourceWAV(); 
 
	BOOL init(); 
	virtual int _read(LONG lStart, LONG lCount, LPVOID lpBuffer, LONG cbBuffer, LONG *lSamplesRead, LONG *lBytesRead); 
}; 
 
class AudioSourceAVI : public AudioSource { 
private: 
	IAVIReadHandler *pAVIFile; 
	IAVIReadStream *pAVIStream; 
 
	BOOL _isKey(LONG lSample); 
 
public: 
	AudioSourceAVI(IAVIReadHandler *pAVIFile); 
	~AudioSourceAVI(); 
 
	void Reinit(); 
	bool isStreaming(); 
 
	void streamBegin(bool fRealTime); 
	void streamEnd(); 
 
	BOOL init(); 
	int _read(LONG lStart, LONG lCount, LPVOID lpBuffer, LONG cbBuffer, LONG *lSamplesRead, LONG *lBytesRead); 
}; 
 
class AudioSourceMP3 : public AudioSource { 
private: 
	Header *header; 
	Ibitstream *stream; 
	FILE *f; 
	uint32 pos; 
 
public: 
	AudioSourceMP3(char *fn); 
	~AudioSourceMP3(); 
 
	BOOL init(); 
	virtual int _read(LONG lStart, LONG lCount, LPVOID lpBuffer, LONG cbBuffer, LONG *lSamplesRead, LONG *lBytesRead); 
}; 
 
class AudioSourceAC3 : public AudioSource { 
private: 
	FILE				*ac3File; 
	MMCKINFO			chunkRIFF; 
	MMCKINFO			chunkDATA; 
	LONG				lCurrentSample; 
	LONG				bytesPerSample; 
 
public: 
	AudioSourceAC3(char *fn, LONG inputBufferSize); 
	~AudioSourceAC3(); 
 
	BOOL init(); 
	virtual int _read(LONG lStart, LONG lCount, LPVOID lpBuffer, LONG cbBuffer, LONG *lSamplesRead, LONG *lBytesRead); 
}; 
 
 
class AudioSourceOggVorbis : public AudioSource { 
private: 
	FILE *f; 
 
	ogg_sync_state   oy; /* sync and verify incoming physical bitstream */ 
	ogg_stream_state os; /* take physical pages, weld into a logical stream of packets */ 
	ogg_page         og; /* one Ogg bitstream page.  Vorbis packets are inside */ 
	ogg_packet       op; /* one raw packet of data for decode */ 
		  
	vorbis_info      vi; /* struct that stores all the static vorbis bitstream 
							settings */ 
	vorbis_comment   vc; /* struct that stores all the bitstream user comments */ 
	vorbis_dsp_state vd; /* central working state for the packet->PCM decoder */ 
	vorbis_block     vb; /* local working space for packet->PCM decode */ 
 
	int		eos; 
 
	__int64 pos; 
	LONG	lCurrentSample; 
 
	int		pcm_samples; 
	int		pcm_written; 
 
	BOOL streamInit(); 
	void readPage(); 
	void decodePage(); 
 
public: 
	AudioSourceOggVorbis(char *fn); 
	~AudioSourceOggVorbis(); 
 
	BOOL init(); 
	virtual int _read(LONG lStart, LONG lCount, LPVOID lpBuffer, LONG cbBuffer, LONG *lSamplesRead, LONG *lBytesRead); 
}; 
 
 
#endif