mp4_predict.h

一个播放器 使用了evc 大家可以参考下 哦

/**************************************************************************
 *                                                                        *
 * This code has been developed by Andrea Graziani. This software is an   *
 * implementation of a part of one or more MPEG-4 Video tools as          *
 * specified in ISO/IEC 14496-2 standard.  Those intending to use this    *
 * software module in hardware or software products are advised that its  *
 * use may infringe existing patents or copyrights, and any such use      *
 * would be at such party's own risk.  The original developer of this     *
 * software module and his/her company, and subsequent editors and their  *
 * companies (including Project Mayo), will have no liability for use of  *
 * this software or modifications or derivatives thereof.                 *
 *                                                                        *
 /***************************************************************************************
 *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.													*
 *																						*
 * The GPL can be found at: http://www.gnu.org/copyleft/gpl.html						*
 *																						*
 *																						*	
 ****************************************************************************************/
/**************************************************************************
 *																		  *
 * Copyright (C) 2001 - Project Mayo									  *	
 *																		  *
 * Andrea Graziani (Ag)													  *	
 *																		  *	
 * DivX Advanced Research Center <[e-mail]>					  *
 *																	      *		
 **************************************************************************/

// mp4_predict.h //

#ifndef _MP4_PREDICT_H_
#define _MP4_PREDICT_H_

#define TOP 1
#define LEFT 0

#endif // _MP4_PREDICT_H_

// aritmetic operators 

#define _div_div(a, b) (a>0) ? (a+(b>>1))/b : (a-(b>>1))/b

/***/

extern void dc_recon(int block_num, idct_block_t * dc_value);
extern void ac_recon(int block_num, idct_block_t * psBlock);