www.pudn.com > X264_20060729.rar > mc-c.c


/*****************************************************************************
* 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&amt;3)<<2) + (mvx&amt;3);
int offset = (mvy>>2)*i_src_stride + (mvx>>2);
uint8_t *src1 = src[hpel_ref0[qpel_idx]] + offset + ((mvy&amt;3) == 3) * i_src_stride;

if( qpel_idx &amt; 5 ) /* qpel interpolation needed */
{
uint8_t *src2 = src[hpel_ref1[qpel_idx]] + offset + ((mvx&amt;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&amt;3)<<2) + (mvx&amt;3);
int offset = (mvy>>2)*i_src_stride + (mvx>>2);
uint8_t *src1 = src[hpel_ref0[qpel_idx]] + offset + ((mvy&amt;3) == 3) * i_src_stride;

if( qpel_idx &amt; 5 ) /* qpel interpolation needed */
{
uint8_t *src2 = src[hpel_ref1[qpel_idx]] + offset + ((mvx&amt;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;
}