www.pudn.com > XvidQP.rar > AVIReadHandler.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_AVIREADHANDLER_H 
#define f_AVIREADHANDLER_H 
 
#include  
#include  
 
// These are meant as AVIFile replacements.  They're not quite to AVIFile 
// specs, but they'll do for now. 
 
class IAVIReadStream { 
public: 
	virtual ~IAVIReadStream(); 
 
	virtual HRESULT BeginStreaming(long lStart, long lEnd, long lRate)=0; 
	virtual HRESULT EndStreaming()=0; 
	virtual HRESULT Info(AVISTREAMINFO *pasi, long lSize)=0; 
	virtual bool IsKeyFrame(long lFrame)=0; 
	virtual HRESULT Read(long lStart, long lSamples, void *lpBuffer, long cbBuffer, long *plBytes, long *plSamples)=0; 
	virtual long Start()=0; 
	virtual long End()=0; 
	virtual long PrevKeyFrame(long lFrame)=0; 
	virtual long NextKeyFrame(long lFrame)=0; 
	virtual long NearestKeyFrame(long lFrame)=0; 
	virtual __int64 FramePos(long lFrame)=0; 
	virtual HRESULT FormatSize(long lFrame, long *plSize)=0; 
	virtual HRESULT ReadFormat(long lFrame, void *pFormat, long *plSize)=0; 
	virtual bool isStreaming()=0; 
   virtual bool isKeyframeOnly()=0; 
}; 
 
class IAVIReadHandler { 
public: 
	virtual void AddRef()=0; 
	virtual void Release()=0; 
	virtual IAVIReadStream *GetStream(DWORD fccType, LONG lParam)=0; 
	virtual void EnableFastIO(bool)=0; 
	virtual bool isOptimizedForRealtime()=0; 
	virtual bool isStreaming()=0; 
	virtual bool isIndexFabricated()=0; 
	virtual bool AppendFile(const char *pszFile)=0; 
	virtual bool getSegmentHint(const char **ppszPath)=0; 
}; 
 
IAVIReadHandler *CreateAVIReadHandler(PAVIFILE paf); 
IAVIReadHandler *CreateAVIReadHandler(const char *pszFile); 
 
#endif