mc.c
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Audio
开发平台:
Visual C++
- /*****************************************************************************
- * mc.c: h264 encoder library (Motion Compensation)
- *****************************************************************************
- * Copyright (C) 2003 Laurent Aimar
- * $Id: mc.c,v 1.1 2004/06/03 19:27:07 fenrir Exp $
- *
- * Authors: Eric Petit <titer@m0k.org>
- *
- * 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 <stdarg.h>
- #ifdef SYS_LINUX
- #include <altivec.h>
- #endif
- #include "x264.h"
- #include "common/mc.h"
- #include "common/clip1.h"
- #include "mc.h"
- #include "ppccommon.h"
- typedef void (*pf_mc_t)( uint8_t *src, int i_src,
- uint8_t *dst, int i_dst, int i_height );
- static 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];
- }
- /* pixel_avg */
- static inline void pixel_avg_w4( uint8_t *dst, int i_dst,
- uint8_t *src1, int i_src1,
- uint8_t *src2, int i_src2,
- int i_height )
- {
- int x, y;
- for( y = 0; y < i_height; y++ )
- {
- for( x = 0; x < 4; x++ )
- {
- dst[x] = ( src1[x] + src2[x] + 1 ) >> 1;
- }
- dst += i_dst;
- src1 += i_src1;
- src2 += i_src2;
- }
- }
- static inline void pixel_avg_w8( uint8_t *dst, int i_dst,
- uint8_t *src1, int i_src1,
- uint8_t *src2, int i_src2,
- int i_height )
- {
- /* TODO - optimize */
- pixel_avg_w4( &dst[0], i_dst, &src1[0], i_src1, &src2[0], i_src2,
- i_height );
- pixel_avg_w4( &dst[4], i_dst, &src1[4], i_src1, &src2[4], i_src2,
- i_height );
- }
- static inline void pixel_avg_w16( uint8_t *dst, int i_dst,
- uint8_t *src1, int i_src1,
- uint8_t *src2, int i_src2,
- int i_height )
- {
- int y;
- vec_u8_t src1v, src2v;
- PREP_LOAD;
- PREP_STORE16;
- for( y = 0; y < i_height; y++ )
- {
- VEC_LOAD( src1, src1v, 16, vec_u8_t );
- VEC_LOAD( src2, src2v, 16, vec_u8_t );
- src1v = vec_avg( src1v, src2v );
- VEC_STORE16( src1v, dst );
- dst += i_dst;
- src1 += i_src1;
- src2 += i_src2;
- }
- }
- /* mc_copy: plain c */
- #define MC_COPY( name, a )
- static void name( uint8_t *src, int i_src,
- uint8_t *dst, int i_dst, int i_height )
- {
- int y;
- for( y = 0; y < i_height; y++ )
- {
- memcpy( dst, src, a );
- src += i_src;
- dst += i_dst;
- }
- }
- MC_COPY( mc_copy_w4, 4 )
- MC_COPY( mc_copy_w8, 8 )
- MC_COPY( mc_copy_w16, 16 )
- void mc_luma_altivec( 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 )
- {
- uint8_t *src1, *src2;
- /* todo : fixme... */
- int correction = (((mvx&3) == 3 && (mvy&3) == 1) || ((mvx&3) == 1 && (mvy&3) == 3)) ? 1:0;
- int hpel1x = mvx>>1;
- int hpel1y = (mvy+1-correction)>>1;
- int filter1 = (hpel1x & 1) + ( (hpel1y & 1) << 1 );
- src1 = src[filter1] + (hpel1y >> 1) * i_src_stride + (hpel1x >> 1);
- if ( (mvx|mvy) & 1 ) /* qpel interpolation needed */
- {
- int hpel2x = (mvx+1)>>1;
- int hpel2y = (mvy+correction)>>1;
- int filter2 = (hpel2x & 1) + ( (hpel2y & 1) <<1 );
- src2 = src[filter2] + (hpel2y >> 1) * i_src_stride + (hpel2x >> 1);
- switch(i_width) {
- case 4:
- pixel_avg_w4( dst, i_dst_stride, src1, i_src_stride,
- src2, i_src_stride, i_height );
- break;
- case 8:
- pixel_avg_w8( dst, i_dst_stride, src1, i_src_stride,
- src2, i_src_stride, i_height );
- break;
- case 16:
- default:
- pixel_avg_w16( dst, i_dst_stride, src1, i_src_stride,
- src2, i_src_stride, i_height );
- }
- }
- else
- {
- switch(i_width) {
- case 4:
- mc_copy_w4( src1, i_src_stride, dst, i_dst_stride, i_height );
- break;
- case 8:
- mc_copy_w8( src1, i_src_stride, dst, i_dst_stride, i_height );
- break;
- case 16:
- mc_copy_w16( src1, i_src_stride, dst, i_dst_stride, i_height );
- break;
- }
- }
- }
- uint8_t *get_ref_altivec( 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 )
- {
- uint8_t *src1, *src2;
- /* todo : fixme... */
- int correction = (((mvx&3) == 3 && (mvy&3) == 1) || ((mvx&3) == 1 && (mvy&3) == 3)) ? 1:0;
- int hpel1x = mvx>>1;
- int hpel1y = (mvy+1-correction)>>1;
- int filter1 = (hpel1x & 1) + ( (hpel1y & 1) << 1 );
- src1 = src[filter1] + (hpel1y >> 1) * i_src_stride + (hpel1x >> 1);
- if ( (mvx|mvy) & 1 ) /* qpel interpolation needed */
- {
- int hpel2x = (mvx+1)>>1;
- int hpel2y = (mvy+correction)>>1;
- int filter2 = (hpel2x & 1) + ( (hpel2y & 1) <<1 );
- src2 = src[filter2] + (hpel2y >> 1) * i_src_stride + (hpel2x >> 1);
- switch(i_width) {
- case 4:
- pixel_avg_w4( dst, *i_dst_stride, src1, i_src_stride,
- src2, i_src_stride, i_height );
- break;
- case 8:
- pixel_avg_w8( dst, *i_dst_stride, src1, i_src_stride,
- src2, i_src_stride, i_height );
- break;
- case 16:
- default:
- pixel_avg_w16( 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;
- }
- }
- static void mc_chroma_c( 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;
- int d8x = mvx & 0x07;
- int d8y = mvy & 0x07;
- DECLARE_ALIGNED( uint16_t, coeff[4], 16 );
- coeff[0] = (8-d8x)*(8-d8y);
- coeff[1] = d8x *(8-d8y);
- coeff[2] = (8-d8x)*d8y;
- coeff[3] = d8x *d8y;
- src += (mvy >> 3) * i_src_stride + (mvx >> 3);
- srcp = &src[i_src_stride];
- /* TODO: optimize */
- for( y = 0; y < i_height; y++ )
- {
- for( x = 0; x < i_width; x++ )
- {
- dst[x] = ( coeff[0]*src[x] + coeff[1]*src[x+1] +
- coeff[2]*srcp[x] + coeff[3]*srcp[x+1] + 32 ) >> 6;
- }
- dst += i_dst_stride;
- src = srcp;
- srcp += i_src_stride;
- }
- }
- #define DO_PROCESS(a)
- src##a##v_16 = vec_u8_to_u16( src##a##v_8 );
- src##a##v_16 = vec_mladd( coeff##a##v, src##a##v_16, zero_u16v );
- dstv_16 = vec_add( dstv_16, src##a##v_16 )
- static void mc_chroma_altivec_4xh( uint8_t *src, int i_src_stride,
- uint8_t *dst, int i_dst_stride,
- int mvx, int mvy,
- int i_height )
- {
- uint8_t *srcp;
- int y;
- int d8x = mvx & 0x07;
- int d8y = mvy & 0x07;
- DECLARE_ALIGNED( uint16_t, coeff[4], 16 );
- coeff[0] = (8-d8x)*(8-d8y);
- coeff[1] = d8x *(8-d8y);
- coeff[2] = (8-d8x)*d8y;
- coeff[3] = d8x *d8y;
- src += (mvy >> 3) * i_src_stride + (mvx >> 3);
- srcp = &src[i_src_stride];
- LOAD_ZERO;
- PREP_LOAD;
- PREP_STORE4;
- vec_u16_t coeff0v, coeff1v, coeff2v, coeff3v;
- vec_u8_t src0v_8, src1v_8, src2v_8, src3v_8;
- vec_u16_t src0v_16, src1v_16, src2v_16, src3v_16;
- vec_u8_t dstv_8;
- vec_u16_t dstv_16;
- vec_u8_t permv;
- vec_u16_t shiftv;
- vec_u16_t k32v;
- coeff0v = vec_ld( 0, coeff );
- coeff3v = vec_splat( coeff0v, 3 );
- coeff2v = vec_splat( coeff0v, 2 );
- coeff1v = vec_splat( coeff0v, 1 );
- coeff0v = vec_splat( coeff0v, 0 );
- k32v = vec_sl( vec_splat_u16( 1 ), vec_splat_u16( 5 ) );
- permv = vec_lvsl( 0, (uint8_t *) 1 );
- shiftv = vec_splat_u16( 6 );
- VEC_LOAD( src, src2v_8, 5, vec_u8_t );
- src3v_8 = vec_perm( src2v_8, src2v_8, permv );
- for( y = 0; y < i_height; y++ )
- {
- src0v_8 = src2v_8;
- src1v_8 = src3v_8;
- VEC_LOAD( srcp, src2v_8, 5, vec_u8_t );
- src3v_8 = vec_perm( src2v_8, src2v_8, permv );
- dstv_16 = k32v;
- DO_PROCESS( 0 );
- DO_PROCESS( 1 );
- DO_PROCESS( 2 );
- DO_PROCESS( 3 );
- dstv_16 = vec_sr( dstv_16, shiftv );
- dstv_8 = vec_u16_to_u8( dstv_16 );
- VEC_STORE4( dstv_8, dst );
- dst += i_dst_stride;
- srcp += i_src_stride;
- }
- }
- static void mc_chroma_altivec_8xh( uint8_t *src, int i_src_stride,
- uint8_t *dst, int i_dst_stride,
- int mvx, int mvy,
- int i_height )
- {
- uint8_t *srcp;
- int y;
- int d8x = mvx & 0x07;
- int d8y = mvy & 0x07;
- DECLARE_ALIGNED( uint16_t, coeff[4], 16 );
- coeff[0] = (8-d8x)*(8-d8y);
- coeff[1] = d8x *(8-d8y);
- coeff[2] = (8-d8x)*d8y;
- coeff[3] = d8x *d8y;
- src += (mvy >> 3) * i_src_stride + (mvx >> 3);
- srcp = &src[i_src_stride];
- LOAD_ZERO;
- PREP_LOAD;
- PREP_STORE8;
- vec_u16_t coeff0v, coeff1v, coeff2v, coeff3v;
- vec_u8_t src0v_8, src1v_8, src2v_8, src3v_8;
- vec_u16_t src0v_16, src1v_16, src2v_16, src3v_16;
- vec_u8_t dstv_8;
- vec_u16_t dstv_16;
- vec_u8_t permv;
- vec_u16_t shiftv;
- vec_u16_t k32v;
- coeff0v = vec_ld( 0, coeff );
- coeff3v = vec_splat( coeff0v, 3 );
- coeff2v = vec_splat( coeff0v, 2 );
- coeff1v = vec_splat( coeff0v, 1 );
- coeff0v = vec_splat( coeff0v, 0 );
- k32v = vec_sl( vec_splat_u16( 1 ), vec_splat_u16( 5 ) );
- permv = vec_lvsl( 0, (uint8_t *) 1 );
- shiftv = vec_splat_u16( 6 );
- VEC_LOAD( src, src2v_8, 9, vec_u8_t );
- src3v_8 = vec_perm( src2v_8, src2v_8, permv );
- for( y = 0; y < i_height; y++ )
- {
- src0v_8 = src2v_8;
- src1v_8 = src3v_8;
- VEC_LOAD( srcp, src2v_8, 9, vec_u8_t );
- src3v_8 = vec_perm( src2v_8, src2v_8, permv );
- dstv_16 = k32v;
- DO_PROCESS( 0 );
- DO_PROCESS( 1 );
- DO_PROCESS( 2 );
- DO_PROCESS( 3 );
- dstv_16 = vec_sr( dstv_16, shiftv );
- dstv_8 = vec_u16_to_u8( dstv_16 );
- VEC_STORE8( dstv_8, dst );
- dst += i_dst_stride;
- srcp += i_src_stride;
- }
- }
- static void mc_chroma_altivec( uint8_t *src, int i_src_stride,
- uint8_t *dst, int i_dst_stride,
- int mvx, int mvy,
- int i_width, int i_height )
- {
- if( i_width == 8 )
- {
- mc_chroma_altivec_8xh( src, i_src_stride, dst, i_dst_stride,
- mvx, mvy, i_height );
- return;
- }
- if( i_width == 4 )
- {
- mc_chroma_altivec_4xh( src, i_src_stride, dst, i_dst_stride,
- mvx, mvy, i_height );
- return;
- }
- mc_chroma_c( src, i_src_stride, dst, i_dst_stride,
- mvx, mvy, i_width, i_height );
- }
- void x264_mc_altivec_init( x264_mc_functions_t *pf )
- {
- pf->mc_luma = mc_luma_altivec;
- pf->get_ref = get_ref_altivec;
- pf->mc_chroma = mc_chroma_altivec;
- }