www.pudn.com > XvidQP.rar > autodetect.cpp, change:2003-02-05,size:7385b

//	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. 
 
#include  
#include  
 
#include "VideoSource.h" 
//#include "command.h" 
 
/////////////////////////////////////////////////////////////////////////// 
 
#define R(x) ((((x)&0xFF000000)>>24) | (((x)&0x00FF0000)>>8) | (((x)&0x0000FF00)<<8) | (((x)&0x000000FF)<<24)) 
 
const struct CodecEntry { 
	FOURCC fcc; 
	const char *name; 
} codec_entries[]={ 
	{ R('VCR1'), "ATI video 1" }, 
	{ R('VCR2'), "ATI video 2" }, 
	{ R('TR20'), "Duck TrueMotion 2.0" }, 
	{ R('dvsd'), "DV" }, 
	{ R('HFYU'), "Huffyuv" }, 
	{ R('I263'), "Intel H.263" }, 
	{ R('I420'), "LifeView YUV12 codec" }, 
	{ R('IR21'), "Indeo Video 2.1" }, 
	{ R('IV31'), "Indeo Video 3.1" }, 
	{ R('IV32'), "Indeo Video 3.2" }, 
	{ R('IV41'), "Indeo Video 4.1" }, 
	{ R('IV50'), "Indeo Video 5.x" }, 
	{ R('UCOD'), "Iterated Systems' ClearVideo" }, 
	{ R('mjpg'), "Motion JPEG" }, 
	{ R('MJPG'), "Motion JPEG" }, 
	{ R('dmb1'), "Motion JPEG (Matrox)" }, 
	{ R('MPG4'), "Microsoft High-Speed MPEG-4 " }, 
	{ R('MP42'), "Microsoft High-Speed MPEG-4 V2" }, 
	{ R('MP43'), "Microsoft High-Speed MPEG-4 V3" }, 
	{ R('DIV3'), "Microsoft High-Speed MPEG-4 V3 [Hack: DivX Low-Motion]" }, 
	{ R('DIV4'), "Microsoft High-Speed MPEG-4 V3 [Hack: DivX Fast-Motion]" }, 
	{ R('AP41'), "Microsoft High-Speed MPEG-4 V3 [Hack: AngelPotion Definitive]" }, 
	{ R('MRLE'), "Microsoft RLE" }, 
	{ R('MSVC'), "Microsoft Video 1" }, 
	{ R('CRAM'), "Microsoft Video 1" }, 
	{ R('DIVX'), "OpenDIVX" }, 
	{ R('CVID'), "Radius Cinepak" }, 
	{ R('VIVO'), "VivoActive" }, 
 
	{ R('VDST'), "VirtualDub frameclient driver" }, 
}; 
 
#undef R 
 
const char *LookupVideoCodec(FOURCC fccType) { 
	int i; 
 
	for(i=0; i<3; i++) { 
		int c = (int)((fccType>>(8*i)) & 255); 
 
		if (isalpha(c)) 
			fccType = (fccType & ~(FOURCC)(0xff << (i*8))) | (toupper(c) << (i*8)); 
	} 
 
	for(i=0; iiWidth) { 
		if (pae->iWidth == pvs->getImageFormat()->biWidth 
			&& pae->iHeight == pvs->getImageFormat()->biHeight 
			&& abs(pae->lMicroSecsPerFrame - MulDiv(pvs->streamInfo.dwScale, 1000000, pvs->streamInfo.dwRate))<100 
			&& pae->lFrames == (pvs->lSampleLast - pvs->lSampleFirst) 
			) 
 
			return pae->lpszName; 
 
		++pae; 
	} 
 
	return NULL; 
} 
#else 
char *AutodetectFile(VideoSource *pvs) { 
	return NULL; 
} 
#endif