www.pudn.com > MPEG4Codec.zip > postprocess.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, 2000,2001 */ 
 
 
 
 
 
 
/* entry point for MMX postprocessing */ 
void postprocess(unsigned char * src[], int src_stride, 
                 unsigned char * dst[], int dst_stride,  
                 int horizontal_size,   int vertical_size,  
                 QP_STORE_T *QP_store,  int QP_stride, 
					  int mode) { 
					   
	uint8_t *puc_src; 
	uint8_t *puc_dst; 
	uint8_t *puc_flt; 
	QP_STORE_T *QP_ptr; 
	int y, i; 
 
 
	/* this loop is (hopefully) going to improve performance */ 
	/* loop down the picture, copying and processing in vertical stripes, each four pixels high */ 
	for (y=0; y>4)*QP_stride]); 
			deblock_horiz(puc_flt, horizontal_size,      dst_stride, QP_ptr, QP_stride, 0); 
		} 
 
		if (mode & PP_DEBLOCK_Y_V) {  
			if ( (y%8) && (y-4)>5 )   { 
				puc_flt = &((dst[0])[(y-4)*dst_stride]);   
				QP_ptr  = &(QP_store[(y>>4)*QP_stride]); 
				deblock_vert( puc_flt, horizontal_size,   dst_stride, QP_ptr, QP_stride, 0); 
			} 
		} 
 
//		if (mode & PP_DERING_Y) { 
//			dering(       puc_flt, horizontal_size,   dst_stride, QP_ptr, QP_stride, 0); 
//		} 
 
	} /* for loop */ 
 
	/* now we're going to do U and V assuming 4:2:0 */ 
	horizontal_size >>= 1; 
	vertical_size   >>= 1; 
	src_stride      >>= 1; 
	dst_stride      >>= 1; 
 
 
	/* loop U then V */ 
	for (i=1; i<=2; i++) { 
 
	for (y=0; y>3)*QP_stride]); 
			deblock_horiz(puc_flt, horizontal_size,      dst_stride, QP_ptr, QP_stride, 1); 
		} 
 
		if (mode & PP_DEBLOCK_C_V) {  
			if ( (y%8) && (y-4)>5 )   { 
				puc_flt = &((dst[i])[(y-4)*dst_stride]);   
				QP_ptr  = &(QP_store[(y>>4)*QP_stride]); 
				deblock_vert( puc_flt, horizontal_size,   dst_stride, QP_ptr, QP_stride, 1); 
			} 
		} 
 
//		if (mode & PP_DERING_Y) { 
//			dering(       puc_flt, horizontal_size,   dst_stride, QP_ptr, QP_stride, 1); 
//		} 
 
	} /* stripe loop */ 
 
	} /* U,V loop */ 
 
	do_emms(); 
 
 
}