/***************************************************************************** * mc.c: h264 encoder library (Motion Compensation) ***************************************************************************** * Copyright (C) 2003 Laurent Aimar * $Id: mc.c,v 1.5 2004/03/25 12:10:42 fenrir 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 <stdint.h>#include "../x264.h"#include "mc.h"#include "clip1.h"#ifdef HAVE_MMXEXT#   include "i386/mc.h"#endif#ifdef HAVE_ALTIVEC#   include "ppc/mc.h"#endifstatic inline int x264_tapfilter( uint8_t *pix, int i_pix_next ){    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];}static inline int x264_tapfilter1( uint8_t *pix ){    return pix[-2] - 5*pix[-1] + 20*(pix[0] + pix[1]) - 5*pix[ 2] + pix[ 3];}static inline void pixel_avg( uint8_t *dst,  int i_dst_stride,                              uint8_t *src1, int i_src1_stride,                              uint8_t *src2, int i_src2_stride,                              int i_width, int i_height ){    int x, y;    for( y = 0; y < i_height; y++ )    {        for( x = 0; x < i_width; x++ )        {            dst[x] = ( src1[x] + src2[x] + 1 ) >> 1;        }        dst  += i_dst_stride;        src1 += i_src1_stride;        src2 += i_src2_stride;    }}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 );static void mc_copy( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height ){    int y;    for( y = 0; y < i_height; y++ )    {        memcpy( dst, src, i_width );        src += i_src_stride;        dst += i_dst_stride;    }}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 ){    int x, y;    for( y = 0; y < i_height; y++ )    {        for( x = 0; x < i_width; x++ )        {            dst[x] = x264_mc_clip1( ( x264_tapfilter1( &src[x] ) + 16 ) >> 5 );        }        src += i_src_stride;        dst += i_dst_stride;    }}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 ){    int x, y;    for( y = 0; y < i_height; y++ )    {        for( x = 0; x < i_width; x++ )        {            dst[x] = x264_mc_clip1( ( x264_tapfilter( &src[x], i_src_stride ) + 16 ) >> 5 );        }        src += i_src_stride;        dst += i_dst_stride;    }}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 ){    uint8_t *out;    uint8_t *pix;    int x, y;    for( x = 0; x < i_width; x++ )    {        int tap[6];        pix = &src[x];        out = &dst[x];        tap[0] = x264_tapfilter1( &pix[-2*i_src_stride] );        tap[1] = x264_tapfilter1( &pix[-1*i_src_stride] );        tap[2] = x264_tapfilter1( &pix[ 0*i_src_stride] );        tap[3] = x264_tapfilter1( &pix[ 1*i_src_stride] );        tap[4] = x264_tapfilter1( &pix[ 2*i_src_stride] );        for( y = 0; y < i_height; y++ )        {            tap[5] = x264_tapfilter1( &pix[ 3*i_src_stride] );            *out = x264_mc_clip1( ( tap[0] - 5*tap[1] + 20 * tap[2] + 20 * tap[3] -5*tap[4] + tap[5] + 512 ) >> 10 );            /* Next line */            pix += i_src_stride;            out += i_dst_stride;            tap[0] = tap[1];            tap[1] = tap[2];            tap[2] = tap[3];            tap[3] = tap[4];            tap[4] = tap[5];        }    }}/* mc I+H */static void mc_xy10( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height ){    uint8_t tmp[16*16];    mc_hh( src, i_src_stride, tmp, i_width, i_width, i_height );    pixel_avg( dst, i_dst_stride, src, i_src_stride, tmp, i_width, i_width, i_height );}static void mc_xy30( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height ){    uint8_t tmp[16*16];    mc_hh( src, i_src_stride, tmp, i_width, i_width, i_height );    pixel_avg( dst, i_dst_stride, src+1, i_src_stride, tmp, i_width, i_width, i_height );}/* mc I+V */static void mc_xy01( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height ){    uint8_t tmp[16*16];    mc_hv( src, i_src_stride, tmp, i_width, i_width, i_height );    pixel_avg( dst, i_dst_stride, src, i_src_stride, tmp, i_width, i_width, i_height );}static void mc_xy03( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height ){    uint8_t tmp[16*16];    mc_hv( src, i_src_stride, tmp, i_width, i_width, i_height );    pixel_avg( dst, i_dst_stride, src+i_src_stride, i_src_stride, tmp, i_width, i_width, i_height );}/* H+V */static void mc_xy11( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height ){    uint8_t tmp1[16*16];    uint8_t tmp2[16*16];    mc_hv( src, i_src_stride, tmp1, i_width, i_width, i_height );    mc_hh( src, i_src_stride, tmp2, i_width, i_width, i_height );    pixel_avg( dst, i_dst_stride, tmp1, i_width, tmp2, i_width, i_width, i_height );}static void mc_xy31( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height ){    uint8_t tmp1[16*16];    uint8_t tmp2[16*16];    mc_hv( src+1, i_src_stride, tmp1, i_width, i_width, i_height );    mc_hh( src,   i_src_stride, tmp2, i_width, i_width, i_height );    pixel_avg( dst, i_dst_stride, tmp1, i_width, tmp2, i_width, i_width, i_height );}static void mc_xy13( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height ){    uint8_t tmp1[16*16];    uint8_t tmp2[16*16];    mc_hv( src,              i_src_stride, tmp1, i_width, i_width, i_height );    mc_hh( src+i_src_stride, i_src_stride, tmp2, i_width, i_width, i_height );    pixel_avg( dst, i_dst_stride, tmp1, i_width, tmp2, i_width, i_width, i_height );}static void mc_xy33( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height ){    uint8_t tmp1[16*16];    uint8_t tmp2[16*16];    mc_hv( src+1,            i_src_stride, tmp1, i_width, i_width, i_height );    mc_hh( src+i_src_stride, i_src_stride, tmp2, i_width, i_width, i_height );    pixel_avg( dst, i_dst_stride, tmp1, i_width, tmp2, i_width, i_width, i_height );}static void mc_xy21( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height ){    uint8_t tmp1[16*16];    uint8_t tmp2[16*16];    mc_hc( src, i_src_stride, tmp1, i_width, i_width, i_height );    mc_hh( src, i_src_stride, tmp2, i_width, i_width, i_height );    pixel_avg( dst, i_dst_stride, tmp1, i_width, tmp2, i_width, i_width, i_height );}static void mc_xy12( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height ){    uint8_t tmp1[16*16];    uint8_t tmp2[16*16];    mc_hc( src, i_src_stride, tmp1, i_width, i_width, i_height );    mc_hv( src, i_src_stride, tmp2, i_width, i_width, i_height );    pixel_avg( dst, i_dst_stride, tmp1, i_width, tmp2, i_width, i_width, i_height );}static void mc_xy32( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height ){    uint8_t tmp1[16*16];    uint8_t tmp2[16*16];    mc_hc( src,   i_src_stride, tmp1, i_width, i_width, i_height );    mc_hv( src+1, i_src_stride, tmp2, i_width, i_width, i_height );    pixel_avg( dst, i_dst_stride, tmp1, i_width, tmp2, i_width, i_width, i_height );}static void mc_xy23( uint8_t *src, int i_src_stride, uint8_t *dst, int i_dst_stride, int i_width, int i_height ){    uint8_t tmp1[16*16];    uint8_t tmp2[16*16];    mc_hc( src,              i_src_stride, tmp1, i_width, i_width, i_height );    mc_hh( src+i_src_stride, i_src_stride, tmp2, i_width, i_width, i_height );    pixel_avg( dst, i_dst_stride, tmp1, i_width, tmp2, i_width, i_width, i_height );}static void motion_compensation_luma( uint8_t *src, int i_src_stride,                                      uint8_t *dst, int i_dst_stride,                                      int mvx,int mvy,                                      int i_width, int i_height ){    static pf_mc_t pf_mc[4][4] =    /*XXX [dqy][dqx] */    {        { mc_copy,  mc_xy10,    mc_hh,      mc_xy30 },        { mc_xy01,  mc_xy11,    mc_xy21,    mc_xy31 },        { mc_hv,    mc_xy12,    mc_hc,      mc_xy32 },        { mc_xy03,  mc_xy13,    mc_xy23,    mc_xy33 },    };    src += (mvy >> 2) * i_src_stride + (mvx >> 2);    pf_mc[mvy&0x03][mvx&0x03]( src, i_src_stride, dst, i_dst_stride, i_width, i_height );}/* full chroma mc (ie until 1/8 pixel)*/static void motion_compensation_chroma( uint8_t *src, int i_src_stride,                                        uint8_t *dst, int i_dst_stride,                                        int mvx, int mvy,                                        int i_width, int i_height ){    uint8_t *srcp;    int x, y;    const int d8x = mvx&0x07;    const int d8y = mvy&0x07;    const int cA = (8-d8x)*(8-d8y);    const int cB = d8x    *(8-d8y);    const int cC = (8-d8x)*d8y;    const int cD = d8x    *d8y;    src  += (mvy >> 3) * i_src_stride + (mvx >> 3);    srcp = &src[i_src_stride];    for( y = 0; y < i_height; y++ )    {        for( x = 0; x < i_width; x++ )        {            dst[x] = ( cA*src[x]  + cB*src[x+1] +                       cC*srcp[x] + cD*srcp[x+1] + 32 ) >> 6;        }        dst  += i_dst_stride;        src   = srcp;        srcp += i_src_stride;    }}void x264_mc_init( int cpu, x264_mc_t pf[2] ){    pf[MC_LUMA]   = motion_compensation_luma;    pf[MC_CHROMA] = motion_compensation_chroma;#ifdef HAVE_MMXEXT    if( cpu&X264_CPU_MMXEXT )    {        x264_mc_mmxext_init( pf );    }#endif#ifdef HAVE_ALTIVEC    if( cpu&X264_CPU_ALTIVEC )    {        x264_mc_altivec_init( pf );    }#endif}