494 lines
16 KiB
C
494 lines
16 KiB
C
/*****************************************************************************
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* mc.c: h264 encoder library (Motion Compensation)
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*****************************************************************************
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* Copyright (C) 2003 Laurent Aimar
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* $Id: mc.c,v 1.1 2004/06/03 19:27:07 fenrir Exp $
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*
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* Authors: Laurent Aimar <fenrir@via.ecp.fr>
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*
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* This program is CC_free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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#include <stdio.h>
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#include <string.h>
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#include "common.h"
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#include "clip1.h"
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#ifdef HAVE_MMXEXT
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#include "i386/mc.h"
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#endif
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#ifdef ARCH_PPC
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#include "ppc/mc.h"
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#endif
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static inline int x264_tapfilter( uint8_t *pix, int i_pix_next )
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{
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return pix[-2*i_pix_next] - 5*pix[-1*i_pix_next] + 20*(pix[0] + pix[1*i_pix_next]) - 5*pix[ 2*i_pix_next] + pix[ 3*i_pix_next];
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}
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static inline int x264_tapfilter1( uint8_t *pix )
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{
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return pix[-2] - 5*pix[-1] + 20*(pix[0] + pix[1]) - 5*pix[ 2] + pix[ 3];
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}
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static inline void pixel_avg( uint8_t *dst, int i_dst_stride,
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uint8_t *src1, int i_src1_stride,
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uint8_t *src2, int i_src2_stride,
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int i_width, int i_height )
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{
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int x, y;
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for( y = 0; y < i_height; y++ )
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{
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for( x = 0; x < i_width; x++ )
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{
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dst[x] = ( src1[x] + src2[x] + 1 ) >> 1;
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}
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dst += i_dst_stride;
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src1 += i_src1_stride;
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src2 += i_src2_stride;
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}
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}
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static inline void pixel_avg_wxh( uint8_t *dst, int i_dst, uint8_t *src, int i_src, int width, int height )
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{
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int x, y;
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for( y = 0; y < height; y++ )
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{
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for( x = 0; x < width; x++ )
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{
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dst[x] = ( dst[x] + src[x] + 1 ) >> 1;
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}
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dst += i_dst;
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src += i_src;
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}
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}
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#define PIXEL_AVG_C( name, width, height ) \
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static void name( uint8_t *pix1, int i_stride_pix1, \
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uint8_t *pix2, int i_stride_pix2 ) \
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{ \
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pixel_avg_wxh( pix1, i_stride_pix1, pix2, i_stride_pix2, width, height ); \
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}
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PIXEL_AVG_C( pixel_avg_16x16, 16, 16 )
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PIXEL_AVG_C( pixel_avg_16x8, 16, 8 )
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PIXEL_AVG_C( pixel_avg_8x16, 8, 16 )
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PIXEL_AVG_C( pixel_avg_8x8, 8, 8 )
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PIXEL_AVG_C( pixel_avg_8x4, 8, 4 )
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PIXEL_AVG_C( pixel_avg_4x8, 4, 8 )
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PIXEL_AVG_C( pixel_avg_4x4, 4, 4 )
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PIXEL_AVG_C( pixel_avg_4x2, 4, 2 )
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PIXEL_AVG_C( pixel_avg_2x4, 2, 4 )
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PIXEL_AVG_C( pixel_avg_2x2, 2, 2 )
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/* Implicit weighted bipred only:
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* assumes log2_denom = 5, offset = 0, weight1 + weight2 = 64 */
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#define op_scale2(x) dst[x] = x264_clip_uint8( (dst[x]*i_weight1 + src[x]*i_weight2 + (1<<5)) >> 6 )
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static inline void pixel_avg_weight_wxh( uint8_t *dst, int i_dst, uint8_t *src, int i_src, int width, int height, int i_weight1 ){
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int y;
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const int i_weight2 = 64 - i_weight1;
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for(y=0; y<height; y++, dst += i_dst, src += i_src){
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op_scale2(0);
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op_scale2(1);
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if(width==2) continue;
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op_scale2(2);
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op_scale2(3);
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if(width==4) continue;
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op_scale2(4);
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op_scale2(5);
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op_scale2(6);
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op_scale2(7);
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if(width==8) continue;
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op_scale2(8);
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op_scale2(9);
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op_scale2(10);
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op_scale2(11);
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op_scale2(12);
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op_scale2(13);
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op_scale2(14);
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op_scale2(15);
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}
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}
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#define PIXEL_AVG_WEIGHT_C( width, height ) \
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static void pixel_avg_weight_##width##x##height( \
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uint8_t *pix1, int i_stride_pix1, \
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uint8_t *pix2, int i_stride_pix2, int i_weight1 ) \
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{ \
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pixel_avg_weight_wxh( pix1, i_stride_pix1, pix2, i_stride_pix2, width, height, i_weight1 ); \
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}
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PIXEL_AVG_WEIGHT_C(16,16)
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PIXEL_AVG_WEIGHT_C(16,8)
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PIXEL_AVG_WEIGHT_C(8,16)
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PIXEL_AVG_WEIGHT_C(8,8)
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PIXEL_AVG_WEIGHT_C(8,4)
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PIXEL_AVG_WEIGHT_C(4,8)
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PIXEL_AVG_WEIGHT_C(4,4)
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PIXEL_AVG_WEIGHT_C(4,2)
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PIXEL_AVG_WEIGHT_C(2,4)
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PIXEL_AVG_WEIGHT_C(2,2)
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#undef op_scale2
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#undef PIXEL_AVG_WEIGHT_C
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typedef void (*pf_mc_t)(uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height );
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static void mc_copy( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height )
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{
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int y;
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for( y = 0; y < i_height; y++ )
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{
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memcpy( dst, src, i_width );
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src += i_src_stride;
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dst += i_dst_stride;
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}
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}
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static inline void mc_hh( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height )
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{
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int x, y;
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for( y = 0; y < i_height; y++ )
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{
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for( x = 0; x < i_width; x++ )
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{
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dst[x] = x264_mc_clip1( ( x264_tapfilter1( &src[x] ) + 16 ) >> 5 );
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}
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src += i_src_stride;
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dst += i_dst_stride;
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}
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}
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static inline void mc_hv( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height )
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{
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int x, y;
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for( y = 0; y < i_height; y++ )
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{
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for( x = 0; x < i_width; x++ )
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{
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dst[x] = x264_mc_clip1( ( x264_tapfilter( &src[x], i_src_stride ) + 16 ) >> 5 );
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}
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src += i_src_stride;
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dst += i_dst_stride;
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}
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}
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static inline void mc_hc( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height )
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{
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uint8_t *out;
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uint8_t *pix;
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int x, y;
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for( x = 0; x < i_width; x++ )
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{
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int tap[6];
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pix = &src[x];
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out = &dst[x];
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tap[0] = x264_tapfilter1( &pix[-2*i_src_stride] );
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tap[1] = x264_tapfilter1( &pix[-1*i_src_stride] );
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tap[2] = x264_tapfilter1( &pix[ 0*i_src_stride] );
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tap[3] = x264_tapfilter1( &pix[ 1*i_src_stride] );
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tap[4] = x264_tapfilter1( &pix[ 2*i_src_stride] );
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for( y = 0; y < i_height; y++ )
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{
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tap[5] = x264_tapfilter1( &pix[ 3*i_src_stride] );
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*out = x264_mc_clip1( ( tap[0] - 5*tap[1] + 20 * tap[2] + 20 * tap[3] -5*tap[4] + tap[5] + 512 ) >> 10 );
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/* Next line */
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pix += i_src_stride;
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out += i_dst_stride;
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tap[0] = tap[1];
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tap[1] = tap[2];
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tap[2] = tap[3];
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tap[3] = tap[4];
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tap[4] = tap[5];
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}
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}
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}
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static const int hpel_ref0[16] = {0,1,1,1,0,1,1,1,2,3,3,3,0,1,1,1};
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static const int hpel_ref1[16] = {0,0,0,0,2,2,3,2,2,2,3,2,2,2,3,2};
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static void mc_luma( uint8_t *src[4], int i_src_stride,
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uint8_t *dst, int i_dst_stride,
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int mvx,int mvy,
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int i_width, int i_height )
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{
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int qpel_idx = ((mvy&3)<<2) + (mvx&3);
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int offset = (mvy>>2)*i_src_stride + (mvx>>2);
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uint8_t *src1 = src[hpel_ref0[qpel_idx]] + offset + ((mvy&3) == 3) * i_src_stride;
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if( qpel_idx & 5 ) /* qpel interpolation needed */
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{
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uint8_t *src2 = src[hpel_ref1[qpel_idx]] + offset + ((mvx&3) == 3);
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pixel_avg( dst, i_dst_stride, src1, i_src_stride,
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src2, i_src_stride, i_width, i_height );
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}
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else
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{
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mc_copy( src1, i_src_stride, dst, i_dst_stride, i_width, i_height );
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}
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}
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static uint8_t *get_ref( uint8_t *src[4], int i_src_stride,
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uint8_t *dst, int * i_dst_stride,
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int mvx,int mvy,
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int i_width, int i_height )
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{
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int qpel_idx = ((mvy&3)<<2) + (mvx&3);
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int offset = (mvy>>2)*i_src_stride + (mvx>>2);
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uint8_t *src1 = src[hpel_ref0[qpel_idx]] + offset + ((mvy&3) == 3) * i_src_stride;
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if( qpel_idx & 5 ) /* qpel interpolation needed */
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{
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uint8_t *src2 = src[hpel_ref1[qpel_idx]] + offset + ((mvx&3) == 3);
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pixel_avg( dst, *i_dst_stride, src1, i_src_stride,
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src2, i_src_stride, i_width, i_height );
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return dst;
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}
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else
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{
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*i_dst_stride = i_src_stride;
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return src1;
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}
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}
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/* full chroma mc (ie until 1/8 pixel)*/
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static void motion_compensation_chroma( uint8_t *src, int i_src_stride,
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uint8_t *dst, int i_dst_stride,
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int mvx, int mvy,
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int i_width, int i_height )
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{
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uint8_t *srcp;
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int x, y;
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const int d8x = mvx&0x07;
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const int d8y = mvy&0x07;
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const int cA = (8-d8x)*(8-d8y);
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const int cB = d8x *(8-d8y);
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const int cC = (8-d8x)*d8y;
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const int cD = d8x *d8y;
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src += (mvy >> 3) * i_src_stride + (mvx >> 3);
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srcp = &src[i_src_stride];
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for( y = 0; y < i_height; y++ )
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{
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for( x = 0; x < i_width; x++ )
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{
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dst[x] = ( cA*src[x] + cB*src[x+1] +
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cC*srcp[x] + cD*srcp[x+1] + 32 ) >> 6;
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}
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dst += i_dst_stride;
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src = srcp;
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srcp += i_src_stride;
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}
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}
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#define MC_COPY(W) \
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static void mc_copy_w##W( uint8_t *dst, int i_dst, uint8_t *src, int i_src, int i_height ) \
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{ \
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mc_copy( src, i_src, dst, i_dst, W, i_height ); \
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}
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MC_COPY( 16 )
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MC_COPY( 8 )
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MC_COPY( 4 )
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static void plane_copy( uint8_t *dst, int i_dst,
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uint8_t *src, int i_src, int w, int h)
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{
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while( h-- )
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{
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memcpy( dst, src, w );
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dst += i_dst;
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src += i_src;
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}
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}
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void x264_mc_init( int cpu, x264_mc_functions_t *pf )
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{
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pf->mc_luma = mc_luma;
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pf->get_ref = get_ref;
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pf->mc_chroma = motion_compensation_chroma;
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pf->avg[PIXEL_16x16]= pixel_avg_16x16;
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pf->avg[PIXEL_16x8] = pixel_avg_16x8;
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pf->avg[PIXEL_8x16] = pixel_avg_8x16;
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pf->avg[PIXEL_8x8] = pixel_avg_8x8;
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pf->avg[PIXEL_8x4] = pixel_avg_8x4;
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pf->avg[PIXEL_4x8] = pixel_avg_4x8;
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pf->avg[PIXEL_4x4] = pixel_avg_4x4;
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pf->avg[PIXEL_4x2] = pixel_avg_4x2;
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pf->avg[PIXEL_2x4] = pixel_avg_2x4;
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pf->avg[PIXEL_2x2] = pixel_avg_2x2;
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pf->avg_weight[PIXEL_16x16]= pixel_avg_weight_16x16;
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pf->avg_weight[PIXEL_16x8] = pixel_avg_weight_16x8;
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pf->avg_weight[PIXEL_8x16] = pixel_avg_weight_8x16;
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pf->avg_weight[PIXEL_8x8] = pixel_avg_weight_8x8;
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pf->avg_weight[PIXEL_8x4] = pixel_avg_weight_8x4;
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pf->avg_weight[PIXEL_4x8] = pixel_avg_weight_4x8;
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pf->avg_weight[PIXEL_4x4] = pixel_avg_weight_4x4;
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pf->avg_weight[PIXEL_4x2] = pixel_avg_weight_4x2;
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pf->avg_weight[PIXEL_2x4] = pixel_avg_weight_2x4;
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pf->avg_weight[PIXEL_2x2] = pixel_avg_weight_2x2;
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pf->copy[PIXEL_16x16] = mc_copy_w16;
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pf->copy[PIXEL_8x8] = mc_copy_w8;
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pf->copy[PIXEL_4x4] = mc_copy_w4;
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pf->plane_copy = plane_copy;
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#ifdef HAVE_MMXEXT
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if( cpu&X264_CPU_MMXEXT ) {
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x264_mc_mmxext_init( pf );
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pf->mc_chroma = x264_mc_chroma_mmxext;
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}
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#endif
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#ifdef HAVE_SSE2
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if( cpu&X264_CPU_SSE2 )
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x264_mc_sse2_init( pf );
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#endif
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#ifdef ARCH_PPC
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if( cpu&X264_CPU_ALTIVEC )
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x264_mc_altivec_init( pf );
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#endif
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}
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extern void x264_hpel_filter_mmxext( uint8_t *dsth, uint8_t *dstv, uint8_t *dstc, uint8_t *src,
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int i_stride, int i_width, int i_height );
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void x264_frame_filter( int cpu, x264_frame_t *frame, int b_interlaced )
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{
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const int x_inc = 16, y_inc = 16;
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const int stride = frame->i_stride[0] << b_interlaced;
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const int height = frame->i_lines[0] >> b_interlaced;
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int x, y;
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pf_mc_t int_h = mc_hh;
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pf_mc_t int_v = mc_hv;
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pf_mc_t int_hv = mc_hc;
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#ifdef HAVE_MMXEXT
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if ( cpu & X264_CPU_MMXEXT )
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{
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int offs = -8*stride - 8;
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x264_hpel_filter_mmxext(
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frame->filtered[1] + offs,
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frame->filtered[2] + offs,
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frame->filtered[3] + offs,
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frame->plane[0] + offs,
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stride, stride - 48, height + 16);
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}
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else
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#endif
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{
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for( y = -8; y < height + 8; y += y_inc )
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{
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uint8_t *p_in = frame->plane[0] + y * stride - 8;
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uint8_t *p_h = frame->filtered[1] + y * stride - 8;
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uint8_t *p_v = frame->filtered[2] + y * stride - 8;
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uint8_t *p_hv = frame->filtered[3] + y * stride - 8;
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for( x = -8; x < stride - 64 + 8; x += x_inc )
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{
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int_h( p_in, stride, p_h, stride, x_inc, y_inc );
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int_v( p_in, stride, p_v, stride, x_inc, y_inc );
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int_hv( p_in, stride, p_hv, stride, x_inc, y_inc );
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p_h += x_inc;
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p_v += x_inc;
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p_hv += x_inc;
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p_in += x_inc;
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}
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}
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}
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/* generate integral image:
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* frame->integral contains 2 planes. in the upper plane, each element is
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* the sum of an 8x8 pixel region with top-left corner on that point.
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* in the lower plane, 4x4 sums (needed only with --analyse p4x4). */
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if( frame->integral )
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{
|
|
memset( frame->integral - 32 * stride - 32, 0, stride * sizeof(uint16_t) );
|
|
for( y = -32; y < frame->i_lines[0] + 31; y++ )
|
|
{
|
|
uint8_t *ref = frame->plane[0] + y * stride - 32;
|
|
uint16_t *line = frame->integral + (y+1) * stride - 31;
|
|
uint16_t v = line[0] = 0;
|
|
for( x = 0; x < stride-1; x++ )
|
|
line[x] = v += ref[x] + line[x-stride] - line[x-stride-1];
|
|
}
|
|
for( y = -31; y < frame->i_lines[0] + 24; y++ )
|
|
{
|
|
uint16_t *line = frame->integral + y * stride - 31;
|
|
uint16_t *sum4 = line + frame->i_stride[0] * (frame->i_lines[0] + 64);
|
|
for( x = -31; x < stride - 40; x++, line++, sum4++ )
|
|
{
|
|
sum4[0] = line[4+4*stride] - line[4] - line[4*stride] + line[0];
|
|
line[0] += line[8+8*stride] - line[8] - line[8*stride];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void x264_frame_init_lowres( int cpu, x264_frame_t *frame )
|
|
{
|
|
// FIXME: tapfilter?
|
|
const int i_stride = frame->i_stride[0];
|
|
const int i_stride2 = frame->i_stride_lowres;
|
|
const int i_width2 = i_stride2 - 64;
|
|
int x, y, i;
|
|
for( y = 0; y < frame->i_lines_lowres - 1; y++ )
|
|
{
|
|
uint8_t *src0 = &frame->plane[0][2*y*i_stride];
|
|
uint8_t *src1 = src0+i_stride;
|
|
uint8_t *src2 = src1+i_stride;
|
|
uint8_t *dst0 = &frame->lowres[0][y*i_stride2];
|
|
uint8_t *dsth = &frame->lowres[1][y*i_stride2];
|
|
uint8_t *dstv = &frame->lowres[2][y*i_stride2];
|
|
uint8_t *dstc = &frame->lowres[3][y*i_stride2];
|
|
for( x = 0; x < i_width2 - 1; x++ )
|
|
{
|
|
dst0[x] = (src0[2*x ] + src0[2*x+1] + src1[2*x ] + src1[2*x+1] + 2) >> 2;
|
|
dsth[x] = (src0[2*x+1] + src0[2*x+2] + src1[2*x+1] + src1[2*x+2] + 2) >> 2;
|
|
dstv[x] = (src1[2*x ] + src1[2*x+1] + src2[2*x ] + src2[2*x+1] + 2) >> 2;
|
|
dstc[x] = (src1[2*x+1] + src1[2*x+2] + src2[2*x+1] + src2[2*x+2] + 2) >> 2;
|
|
}
|
|
dst0[x] = (src0[2*x ] + src0[2*x+1] + src1[2*x ] + src1[2*x+1] + 2) >> 2;
|
|
dstv[x] = (src1[2*x ] + src1[2*x+1] + src2[2*x ] + src2[2*x+1] + 2) >> 2;
|
|
dsth[x] = (src0[2*x+1] + src1[2*x+1] + 1) >> 1;
|
|
dstc[x] = (src1[2*x+1] + src2[2*x+1] + 1) >> 1;
|
|
}
|
|
for( i = 0; i < 4; i++ )
|
|
memcpy( &frame->lowres[i][y*i_stride2], &frame->lowres[i][(y-1)*i_stride2], i_width2 );
|
|
|
|
for( y = 0; y < 16; y++ )
|
|
for( x = 0; x < 16; x++ )
|
|
frame->i_cost_est[x][y] = -1;
|
|
|
|
x264_frame_expand_border_lowres( frame );
|
|
}
|
|
|