/***************************************************************************** * mc.c: h264 encoder library (Motion Compensation) ***************************************************************************** * Copyright (C) 2003 Laurent Aimar * $Id: mc-c.c,v 1.5 2004/06/18 01:59:58 chenm001 Exp $ * * Authors: Laurent Aimar <fenrir@via.ecp.fr> * * 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA. *****************************************************************************/#include <stdlib.h>#include <stdio.h>#include <string.h>#include "common/common.h"/* NASM functions */extern void x264_pixel_avg_w4_mmxext( uint8_t *,  int, uint8_t *, int, uint8_t *, int, int );extern void x264_pixel_avg_w8_mmxext( uint8_t *,  int, uint8_t *, int, uint8_t *, int, int );extern void x264_pixel_avg_w16_mmxext( uint8_t *,  int, uint8_t *, int, uint8_t *, int, int );extern void x264_pixel_avg_w16_sse2( uint8_t *,  int, uint8_t *, int, uint8_t *, int, int );extern void x264_pixel_avg_weight_4x4_mmxext( uint8_t *, int, uint8_t *, int, int );extern void x264_pixel_avg_weight_w8_mmxext( uint8_t *, int, uint8_t *, int, int, int );extern void x264_pixel_avg_weight_w16_mmxext( uint8_t *, int, uint8_t *, int, int, int );extern void x264_mc_copy_w4_mmx( uint8_t *, int, uint8_t *, int, int );extern void x264_mc_copy_w8_mmx( uint8_t *, int, uint8_t *, int, int );extern void x264_mc_copy_w16_mmx( uint8_t *, int, uint8_t *, int, int );extern void x264_mc_copy_w16_sse2( uint8_t *, int, uint8_t *, int, int );#define AVG(W,H) \static void x264_pixel_avg_ ## W ## x ## H ## _mmxext( uint8_t *dst, int i_dst, uint8_t *src, int i_src ) \{ \    x264_pixel_avg_w ## W ## _mmxext( dst, i_dst, dst, i_dst, src, i_src, H ); \}AVG(16,16)AVG(16,8)AVG(8,16)AVG(8,8)AVG(8,4)AVG(4,8)AVG(4,4)AVG(4,2)#define AVG_WEIGHT(W,H) \void x264_pixel_avg_weight_ ## W ## x ## H ## _mmxext( uint8_t *dst, int i_dst, uint8_t *src, int i_src, int i_weight_dst ) \{ \    x264_pixel_avg_weight_w ## W ## _mmxext( dst, i_dst, src, i_src, i_weight_dst, H ); \}AVG_WEIGHT(16,16)AVG_WEIGHT(16,8)AVG_WEIGHT(8,16)AVG_WEIGHT(8,8)AVG_WEIGHT(8,4)static void (* const x264_pixel_avg_wtab_mmxext[5])( uint8_t *, int, uint8_t *, int, uint8_t *, int, int ) ={    NULL,    x264_pixel_avg_w4_mmxext,    x264_pixel_avg_w8_mmxext,    NULL,    x264_pixel_avg_w16_mmxext};static void (* const x264_mc_copy_wtab_mmx[5])( uint8_t *, int, uint8_t *, int, int ) ={    NULL,    x264_mc_copy_w4_mmx,    x264_mc_copy_w8_mmx,    NULL,    x264_mc_copy_w16_mmx};static const int hpel_ref0[16] = {0,1,1,1,0,1,1,1,2,3,3,3,0,1,1,1};static const int hpel_ref1[16] = {0,0,0,0,2,2,3,2,2,2,3,2,2,2,3,2};void mc_luma_mmx( uint8_t *src[4], int i_src_stride,                  uint8_t *dst,    int i_dst_stride,                  int mvx,int mvy,                  int i_width, int i_height ){    int qpel_idx = ((mvy&3)<<2) + (mvx&3);    int offset = (mvy>>2)*i_src_stride + (mvx>>2);    uint8_t *src1 = src[hpel_ref0[qpel_idx]] + offset + ((mvy&3) == 3) * i_src_stride;    if( qpel_idx & 5 ) /* qpel interpolation needed */    {        uint8_t *src2 = src[hpel_ref1[qpel_idx]] + offset + ((mvx&3) == 3);        x264_pixel_avg_wtab_mmxext[i_width>>2](                dst, i_dst_stride, src1, i_src_stride,                src2, i_src_stride, i_height );    }    else    {        x264_mc_copy_wtab_mmx[i_width>>2](                dst, i_dst_stride, src1, i_src_stride, i_height );    }}uint8_t *get_ref_mmx( uint8_t *src[4], int i_src_stride,                      uint8_t *dst,   int *i_dst_stride,                      int mvx,int mvy,                      int i_width, int i_height ){    int qpel_idx = ((mvy&3)<<2) + (mvx&3);    int offset = (mvy>>2)*i_src_stride + (mvx>>2);    uint8_t *src1 = src[hpel_ref0[qpel_idx]] + offset + ((mvy&3) == 3) * i_src_stride;    if( qpel_idx & 5 ) /* qpel interpolation needed */    {        uint8_t *src2 = src[hpel_ref1[qpel_idx]] + offset + ((mvx&3) == 3);        x264_pixel_avg_wtab_mmxext[i_width>>2](                dst, *i_dst_stride, src1, i_src_stride,                src2, i_src_stride, i_height );        return dst;    }    else    {        *i_dst_stride = i_src_stride;        return src1;    }}void x264_mc_mmxext_init( x264_mc_functions_t *pf ){    pf->mc_luma   = mc_luma_mmx;    pf->get_ref   = get_ref_mmx;    pf->avg[PIXEL_16x16] = x264_pixel_avg_16x16_mmxext;    pf->avg[PIXEL_16x8]  = x264_pixel_avg_16x8_mmxext;    pf->avg[PIXEL_8x16]  = x264_pixel_avg_8x16_mmxext;    pf->avg[PIXEL_8x8]   = x264_pixel_avg_8x8_mmxext;    pf->avg[PIXEL_8x4]   = x264_pixel_avg_8x4_mmxext;    pf->avg[PIXEL_4x8]   = x264_pixel_avg_4x8_mmxext;    pf->avg[PIXEL_4x4]   = x264_pixel_avg_4x4_mmxext;    pf->avg[PIXEL_4x2]   = x264_pixel_avg_4x2_mmxext;        pf->avg_weight[PIXEL_16x16] = x264_pixel_avg_weight_16x16_mmxext;    pf->avg_weight[PIXEL_16x8]  = x264_pixel_avg_weight_16x8_mmxext;    pf->avg_weight[PIXEL_8x16]  = x264_pixel_avg_weight_8x16_mmxext;    pf->avg_weight[PIXEL_8x8]   = x264_pixel_avg_weight_8x8_mmxext;    pf->avg_weight[PIXEL_8x4]   = x264_pixel_avg_weight_8x4_mmxext;    pf->avg_weight[PIXEL_4x4]   = x264_pixel_avg_weight_4x4_mmxext;    // avg_weight_4x8 is rare and 4x2 is not used    pf->copy[PIXEL_16x16] = x264_mc_copy_w16_mmx;    pf->copy[PIXEL_8x8]   = x264_mc_copy_w8_mmx;    pf->copy[PIXEL_4x4]   = x264_mc_copy_w4_mmx;}void x264_mc_sse2_init( x264_mc_functions_t *pf ){    /* todo: use sse2 */    pf->mc_luma   = mc_luma_mmx;    pf->get_ref   = get_ref_mmx;}