www.pudn.com > mpeg4_DECORE.rar > fast_copy.c

/************************************************************************** 
 *                                                                        * 
 * This code has been developed by John Funnell. 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.                 * 
 *                                                                        * 
 * Project Mayo gives users of the Codec a license to this software       * 
 * module or modifications thereof for use in hardware or software        * 
 * products claiming conformance to the MPEG-4 Video Standard as          * 
 * described in the Open DivX license.                                    * 
 *                                                                        * 
 * The complete Open DivX license can be found at                         * 
 * http://www.projectmayo.com/opendivx/license.php                        * 
 *                                                                        * 
 **************************************************************************/ 
/** 
*  Copyright (C) 2001 - Project Mayo 
 * 
 * John Funnell 
 * 
 * DivX Advanced Research Center  
* 
**/ 
 
/*** 
 
References:   
 * ISO/IEC 14496-2 
 * MoMuSys-FDIS-V1.0-990812 
 * Intel Architecture Software Developer's Manual 
   Volume 2: Instruction Set Reference 
 
***/ 
 
#include "postprocess_mmx.h" 
 
/* John Funnell, December 2000 */ 
 
/* I know this could probably be written faster... */ 
 
 
/* Fast copy... needs width and stride to be multiples of 16 */ 
void fast_copy(unsigned char *src, int src_stride, 
                 unsigned char *dst, int dst_stride,  
                 int horizontal_size,   int vertical_size) { 
	 
	uint8_t *pmm1; 
	uint8_t *pmm2; 
	int x, y; 
 
	#ifdef PP_SELF_CHECK 
	int j, k; 
	#endif 
	 
		pmm1 = src; 
		pmm2 = dst; 
 
		for (y=0; y