FFmpeg: libavcodec/mpegvideo_common.h Source File

00001 /*
00002  * The simplest mpeg encoder (well, it was the simplest!)
00003  * Copyright (c) 2000,2001 Fabrice Bellard
00004  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
00005  *
00006  * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
00007  *
00008  * This file is part of FFmpeg.
00009  *
00010  * FFmpeg is free software; you can redistribute it and/or
00011  * modify it under the terms of the GNU Lesser General Public
00012  * License as published by the Free Software Foundation; either
00013  * version 2.1 of the License, or (at your option) any later version.
00014  *
00015  * FFmpeg is distributed in the hope that it will be useful,
00016  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00017  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00018  * Lesser General Public License for more details.
00019  *
00020  * You should have received a copy of the GNU Lesser General Public
00021  * License along with FFmpeg; if not, write to the Free Software
00022  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00023  */
00024 
00030 #ifndef AVCODEC_MPEGVIDEO_COMMON_H
00031 #define AVCODEC_MPEGVIDEO_COMMON_H
00032 
00033 #include <string.h>
00034 #include "libavutil/avassert.h"
00035 #include "avcodec.h"
00036 #include "dsputil.h"
00037 #include "mpegvideo.h"
00038 #include "mjpegenc.h"
00039 #include "msmpeg4.h"
00040 #include <limits.h>
00041 
00042 int ff_dct_quantize_c(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
00043 
00048 void ff_MPV_common_defaults(MpegEncContext *s);
00049 
00050 static inline void gmc1_motion(MpegEncContext *s,
00051                                uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
00052                                uint8_t **ref_picture)
00053 {
00054     uint8_t *ptr;
00055     int offset, src_x, src_y, linesize, uvlinesize;
00056     int motion_x, motion_y;
00057     int emu=0;
00058 
00059     motion_x= s->sprite_offset[0][0];
00060     motion_y= s->sprite_offset[0][1];
00061     src_x = s->mb_x * 16 + (motion_x >> (s->sprite_warping_accuracy+1));
00062     src_y = s->mb_y * 16 + (motion_y >> (s->sprite_warping_accuracy+1));
00063     motion_x<<=(3-s->sprite_warping_accuracy);
00064     motion_y<<=(3-s->sprite_warping_accuracy);
00065     src_x = av_clip(src_x, -16, s->width);
00066     if (src_x == s->width)
00067         motion_x =0;
00068     src_y = av_clip(src_y, -16, s->height);
00069     if (src_y == s->height)
00070         motion_y =0;
00071 
00072     linesize = s->linesize;
00073     uvlinesize = s->uvlinesize;
00074 
00075     ptr = ref_picture[0] + (src_y * linesize) + src_x;
00076 
00077     if(s->flags&CODEC_FLAG_EMU_EDGE){
00078         if(   (unsigned)src_x >= FFMAX(s->h_edge_pos - 17, 0)
00079            || (unsigned)src_y >= FFMAX(s->v_edge_pos - 17, 0)){
00080             s->dsp.emulated_edge_mc(s->edge_emu_buffer, ptr, linesize, 17, 17, src_x, src_y, s->h_edge_pos, s->v_edge_pos);
00081             ptr= s->edge_emu_buffer;
00082         }
00083     }
00084 
00085     if((motion_x|motion_y)&7){
00086         s->dsp.gmc1(dest_y  , ptr  , linesize, 16, motion_x&15, motion_y&15, 128 - s->no_rounding);
00087         s->dsp.gmc1(dest_y+8, ptr+8, linesize, 16, motion_x&15, motion_y&15, 128 - s->no_rounding);
00088     }else{
00089         int dxy;
00090 
00091         dxy= ((motion_x>>3)&1) | ((motion_y>>2)&2);
00092         if (s->no_rounding){
00093             s->dsp.put_no_rnd_pixels_tab[0][dxy](dest_y, ptr, linesize, 16);
00094         }else{
00095             s->dsp.put_pixels_tab       [0][dxy](dest_y, ptr, linesize, 16);
00096         }
00097     }
00098 
00099     if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
00100 
00101     motion_x= s->sprite_offset[1][0];
00102     motion_y= s->sprite_offset[1][1];
00103     src_x = s->mb_x * 8 + (motion_x >> (s->sprite_warping_accuracy+1));
00104     src_y = s->mb_y * 8 + (motion_y >> (s->sprite_warping_accuracy+1));
00105     motion_x<<=(3-s->sprite_warping_accuracy);
00106     motion_y<<=(3-s->sprite_warping_accuracy);
00107     src_x = av_clip(src_x, -8, s->width>>1);
00108     if (src_x == s->width>>1)
00109         motion_x =0;
00110     src_y = av_clip(src_y, -8, s->height>>1);
00111     if (src_y == s->height>>1)
00112         motion_y =0;
00113 
00114     offset = (src_y * uvlinesize) + src_x;
00115     ptr = ref_picture[1] + offset;
00116     if(s->flags&CODEC_FLAG_EMU_EDGE){
00117         if(   (unsigned)src_x >= FFMAX((s->h_edge_pos>>1) - 9, 0)
00118            || (unsigned)src_y >= FFMAX((s->v_edge_pos>>1) - 9, 0)){
00119             s->dsp.emulated_edge_mc(s->edge_emu_buffer, ptr, uvlinesize, 9, 9, src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
00120             ptr= s->edge_emu_buffer;
00121             emu=1;
00122         }
00123     }
00124     s->dsp.gmc1(dest_cb, ptr, uvlinesize, 8, motion_x&15, motion_y&15, 128 - s->no_rounding);
00125 
00126     ptr = ref_picture[2] + offset;
00127     if(emu){
00128         s->dsp.emulated_edge_mc(s->edge_emu_buffer, ptr, uvlinesize, 9, 9, src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
00129         ptr= s->edge_emu_buffer;
00130     }
00131     s->dsp.gmc1(dest_cr, ptr, uvlinesize, 8, motion_x&15, motion_y&15, 128 - s->no_rounding);
00132 
00133     return;
00134 }
00135 
00136 static inline void gmc_motion(MpegEncContext *s,
00137                                uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
00138                                uint8_t **ref_picture)
00139 {
00140     uint8_t *ptr;
00141     int linesize, uvlinesize;
00142     const int a= s->sprite_warping_accuracy;
00143     int ox, oy;
00144 
00145     linesize = s->linesize;
00146     uvlinesize = s->uvlinesize;
00147 
00148     ptr = ref_picture[0];
00149 
00150     ox= s->sprite_offset[0][0] + s->sprite_delta[0][0]*s->mb_x*16 + s->sprite_delta[0][1]*s->mb_y*16;
00151     oy= s->sprite_offset[0][1] + s->sprite_delta[1][0]*s->mb_x*16 + s->sprite_delta[1][1]*s->mb_y*16;
00152 
00153     s->dsp.gmc(dest_y, ptr, linesize, 16,
00154            ox,
00155            oy,
00156            s->sprite_delta[0][0], s->sprite_delta[0][1],
00157            s->sprite_delta[1][0], s->sprite_delta[1][1],
00158            a+1, (1<<(2*a+1)) - s->no_rounding,
00159            s->h_edge_pos, s->v_edge_pos);
00160     s->dsp.gmc(dest_y+8, ptr, linesize, 16,
00161            ox + s->sprite_delta[0][0]*8,
00162            oy + s->sprite_delta[1][0]*8,
00163            s->sprite_delta[0][0], s->sprite_delta[0][1],
00164            s->sprite_delta[1][0], s->sprite_delta[1][1],
00165            a+1, (1<<(2*a+1)) - s->no_rounding,
00166            s->h_edge_pos, s->v_edge_pos);
00167 
00168     if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
00169 
00170     ox= s->sprite_offset[1][0] + s->sprite_delta[0][0]*s->mb_x*8 + s->sprite_delta[0][1]*s->mb_y*8;
00171     oy= s->sprite_offset[1][1] + s->sprite_delta[1][0]*s->mb_x*8 + s->sprite_delta[1][1]*s->mb_y*8;
00172 
00173     ptr = ref_picture[1];
00174     s->dsp.gmc(dest_cb, ptr, uvlinesize, 8,
00175            ox,
00176            oy,
00177            s->sprite_delta[0][0], s->sprite_delta[0][1],
00178            s->sprite_delta[1][0], s->sprite_delta[1][1],
00179            a+1, (1<<(2*a+1)) - s->no_rounding,
00180            s->h_edge_pos>>1, s->v_edge_pos>>1);
00181 
00182     ptr = ref_picture[2];
00183     s->dsp.gmc(dest_cr, ptr, uvlinesize, 8,
00184            ox,
00185            oy,
00186            s->sprite_delta[0][0], s->sprite_delta[0][1],
00187            s->sprite_delta[1][0], s->sprite_delta[1][1],
00188            a+1, (1<<(2*a+1)) - s->no_rounding,
00189            s->h_edge_pos>>1, s->v_edge_pos>>1);
00190 }
00191 
00192 static inline int hpel_motion(MpegEncContext *s,
00193                                   uint8_t *dest, uint8_t *src,
00194                                   int field_based, int field_select,
00195                                   int src_x, int src_y,
00196                                   int width, int height, int stride,
00197                                   int h_edge_pos, int v_edge_pos,
00198                                   int w, int h, op_pixels_func *pix_op,
00199                                   int motion_x, int motion_y)
00200 {
00201     int dxy;
00202     int emu=0;
00203 
00204     dxy = ((motion_y & 1) << 1) | (motion_x & 1);
00205     src_x += motion_x >> 1;
00206     src_y += motion_y >> 1;
00207 
00208     /* WARNING: do no forget half pels */
00209     src_x = av_clip(src_x, -16, width); //FIXME unneeded for emu?
00210     if (src_x == width)
00211         dxy &= ~1;
00212     src_y = av_clip(src_y, -16, height);
00213     if (src_y == height)
00214         dxy &= ~2;
00215     src += src_y * stride + src_x;
00216 
00217     if(s->unrestricted_mv && (s->flags&CODEC_FLAG_EMU_EDGE)){
00218         if(   (unsigned)src_x > FFMAX(h_edge_pos - (motion_x&1) - w, 0)
00219            || (unsigned)src_y > FFMAX(v_edge_pos - (motion_y&1) - h, 0)){
00220             s->dsp.emulated_edge_mc(s->edge_emu_buffer, src, s->linesize, w+1, (h+1)<<field_based,
00221                              src_x, src_y<<field_based, h_edge_pos, s->v_edge_pos);
00222             src= s->edge_emu_buffer;
00223             emu=1;
00224         }
00225     }
00226     if(field_select)
00227         src += s->linesize;
00228     pix_op[dxy](dest, src, stride, h);
00229     return emu;
00230 }
00231 
00232 static av_always_inline
00233 void mpeg_motion_internal(MpegEncContext *s,
00234                  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
00235                  int field_based, int bottom_field, int field_select,
00236                  uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
00237                  int motion_x, int motion_y, int h, int is_mpeg12, int mb_y)
00238 {
00239     uint8_t *ptr_y, *ptr_cb, *ptr_cr;
00240     int dxy, uvdxy, mx, my, src_x, src_y,
00241         uvsrc_x, uvsrc_y, v_edge_pos, uvlinesize, linesize;
00242 
00243 #if 0
00244 if(s->quarter_sample)
00245 {
00246     motion_x>>=1;
00247     motion_y>>=1;
00248 }
00249 #endif
00250 
00251     v_edge_pos = s->v_edge_pos >> field_based;
00252     linesize   = s->current_picture.f.linesize[0] << field_based;
00253     uvlinesize = s->current_picture.f.linesize[1] << field_based;
00254 
00255     dxy = ((motion_y & 1) << 1) | (motion_x & 1);
00256     src_x = s->mb_x* 16               + (motion_x >> 1);
00257     src_y =(   mb_y<<(4-field_based)) + (motion_y >> 1);
00258 
00259     if (!is_mpeg12 && s->out_format == FMT_H263) {
00260         if((s->workaround_bugs & FF_BUG_HPEL_CHROMA) && field_based){
00261             mx = (motion_x>>1)|(motion_x&1);
00262             my = motion_y >>1;
00263             uvdxy = ((my & 1) << 1) | (mx & 1);
00264             uvsrc_x = s->mb_x* 8               + (mx >> 1);
00265             uvsrc_y =(   mb_y<<(3-field_based))+ (my >> 1);
00266         }else{
00267             uvdxy = dxy | (motion_y & 2) | ((motion_x & 2) >> 1);
00268             uvsrc_x = src_x>>1;
00269             uvsrc_y = src_y>>1;
00270         }
00271     }else if(!is_mpeg12 && s->out_format == FMT_H261){//even chroma mv's are full pel in H261
00272         mx = motion_x / 4;
00273         my = motion_y / 4;
00274         uvdxy = 0;
00275         uvsrc_x = s->mb_x*8 + mx;
00276         uvsrc_y =    mb_y*8 + my;
00277     } else {
00278         if(s->chroma_y_shift){
00279             mx = motion_x / 2;
00280             my = motion_y / 2;
00281             uvdxy = ((my & 1) << 1) | (mx & 1);
00282             uvsrc_x = s->mb_x* 8               + (mx >> 1);
00283             uvsrc_y =(   mb_y<<(3-field_based))+ (my >> 1);
00284         } else {
00285             if(s->chroma_x_shift){
00286             //Chroma422
00287                 mx = motion_x / 2;
00288                 uvdxy = ((motion_y & 1) << 1) | (mx & 1);
00289                 uvsrc_x = s->mb_x* 8           + (mx >> 1);
00290                 uvsrc_y = src_y;
00291             } else {
00292             //Chroma444
00293                 uvdxy = dxy;
00294                 uvsrc_x = src_x;
00295                 uvsrc_y = src_y;
00296             }
00297         }
00298     }
00299 
00300     ptr_y  = ref_picture[0] + src_y * linesize + src_x;
00301     ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
00302     ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
00303 
00304     if(   (unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x&1) - 16, 0)
00305        || (unsigned)src_y > FFMAX(   v_edge_pos - (motion_y&1) - h , 0)){
00306             if(is_mpeg12 || s->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
00307                s->codec_id == AV_CODEC_ID_MPEG1VIDEO){
00308                 av_log(s->avctx,AV_LOG_DEBUG,
00309                         "MPEG motion vector out of boundary (%d %d)\n", src_x, src_y);
00310                 return;
00311             }
00312             s->dsp.emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize,
00313                                 17, 17+field_based,
00314                                 src_x, src_y<<field_based,
00315                                 s->h_edge_pos, s->v_edge_pos);
00316             ptr_y = s->edge_emu_buffer;
00317             if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
00318                 uint8_t *uvbuf= s->edge_emu_buffer+18*s->linesize;
00319                 s->dsp.emulated_edge_mc(uvbuf ,
00320                                     ptr_cb, s->uvlinesize,
00321                                     9, 9+field_based,
00322                                     uvsrc_x, uvsrc_y<<field_based,
00323                                     s->h_edge_pos>>1, s->v_edge_pos>>1);
00324                 s->dsp.emulated_edge_mc(uvbuf+16,
00325                                     ptr_cr, s->uvlinesize,
00326                                     9, 9+field_based,
00327                                     uvsrc_x, uvsrc_y<<field_based,
00328                                     s->h_edge_pos>>1, s->v_edge_pos>>1);
00329                 ptr_cb= uvbuf;
00330                 ptr_cr= uvbuf+16;
00331             }
00332     }
00333 
00334     if(bottom_field){ //FIXME use this for field pix too instead of the obnoxious hack which changes picture.data
00335         dest_y += s->linesize;
00336         dest_cb+= s->uvlinesize;
00337         dest_cr+= s->uvlinesize;
00338     }
00339 
00340     if(field_select){
00341         ptr_y += s->linesize;
00342         ptr_cb+= s->uvlinesize;
00343         ptr_cr+= s->uvlinesize;
00344     }
00345 
00346     pix_op[0][dxy](dest_y, ptr_y, linesize, h);
00347 
00348     if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
00349         pix_op[s->chroma_x_shift][uvdxy]
00350                 (dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift);
00351         pix_op[s->chroma_x_shift][uvdxy]
00352                 (dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift);
00353     }
00354     if(!is_mpeg12 && (CONFIG_H261_ENCODER || CONFIG_H261_DECODER) &&
00355          s->out_format == FMT_H261){
00356         ff_h261_loop_filter(s);
00357     }
00358 }
00359 /* apply one mpeg motion vector to the three components */
00360 static av_always_inline
00361 void mpeg_motion(MpegEncContext *s,
00362                  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
00363                  int field_based, int bottom_field, int field_select,
00364                  uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
00365                  int motion_x, int motion_y, int h, int mb_y)
00366 {
00367 #if !CONFIG_SMALL
00368     if(s->out_format == FMT_MPEG1)
00369         mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, field_based,
00370                     bottom_field, field_select, ref_picture, pix_op,
00371                     motion_x, motion_y, h, 1, mb_y);
00372     else
00373 #endif
00374         mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, field_based,
00375                     bottom_field, field_select, ref_picture, pix_op,
00376                     motion_x, motion_y, h, 0, mb_y);
00377 }
00378 
00379 //FIXME move to dsputil, avg variant, 16x16 version
00380 static inline void put_obmc(uint8_t *dst, uint8_t *src[5], int stride){
00381     int x;
00382     uint8_t * const top   = src[1];
00383     uint8_t * const left  = src[2];
00384     uint8_t * const mid   = src[0];
00385     uint8_t * const right = src[3];
00386     uint8_t * const bottom= src[4];
00387 #define OBMC_FILTER(x, t, l, m, r, b)\
00388     dst[x]= (t*top[x] + l*left[x] + m*mid[x] + r*right[x] + b*bottom[x] + 4)>>3
00389 #define OBMC_FILTER4(x, t, l, m, r, b)\
00390     OBMC_FILTER(x         , t, l, m, r, b);\
00391     OBMC_FILTER(x+1       , t, l, m, r, b);\
00392     OBMC_FILTER(x  +stride, t, l, m, r, b);\
00393     OBMC_FILTER(x+1+stride, t, l, m, r, b);
00394 
00395     x=0;
00396     OBMC_FILTER (x  , 2, 2, 4, 0, 0);
00397     OBMC_FILTER (x+1, 2, 1, 5, 0, 0);
00398     OBMC_FILTER4(x+2, 2, 1, 5, 0, 0);
00399     OBMC_FILTER4(x+4, 2, 0, 5, 1, 0);
00400     OBMC_FILTER (x+6, 2, 0, 5, 1, 0);
00401     OBMC_FILTER (x+7, 2, 0, 4, 2, 0);
00402     x+= stride;
00403     OBMC_FILTER (x  , 1, 2, 5, 0, 0);
00404     OBMC_FILTER (x+1, 1, 2, 5, 0, 0);
00405     OBMC_FILTER (x+6, 1, 0, 5, 2, 0);
00406     OBMC_FILTER (x+7, 1, 0, 5, 2, 0);
00407     x+= stride;
00408     OBMC_FILTER4(x  , 1, 2, 5, 0, 0);
00409     OBMC_FILTER4(x+2, 1, 1, 6, 0, 0);
00410     OBMC_FILTER4(x+4, 1, 0, 6, 1, 0);
00411     OBMC_FILTER4(x+6, 1, 0, 5, 2, 0);
00412     x+= 2*stride;
00413     OBMC_FILTER4(x  , 0, 2, 5, 0, 1);
00414     OBMC_FILTER4(x+2, 0, 1, 6, 0, 1);
00415     OBMC_FILTER4(x+4, 0, 0, 6, 1, 1);
00416     OBMC_FILTER4(x+6, 0, 0, 5, 2, 1);
00417     x+= 2*stride;
00418     OBMC_FILTER (x  , 0, 2, 5, 0, 1);
00419     OBMC_FILTER (x+1, 0, 2, 5, 0, 1);
00420     OBMC_FILTER4(x+2, 0, 1, 5, 0, 2);
00421     OBMC_FILTER4(x+4, 0, 0, 5, 1, 2);
00422     OBMC_FILTER (x+6, 0, 0, 5, 2, 1);
00423     OBMC_FILTER (x+7, 0, 0, 5, 2, 1);
00424     x+= stride;
00425     OBMC_FILTER (x  , 0, 2, 4, 0, 2);
00426     OBMC_FILTER (x+1, 0, 1, 5, 0, 2);
00427     OBMC_FILTER (x+6, 0, 0, 5, 1, 2);
00428     OBMC_FILTER (x+7, 0, 0, 4, 2, 2);
00429 }
00430 
00431 /* obmc for 1 8x8 luma block */
00432 static inline void obmc_motion(MpegEncContext *s,
00433                                uint8_t *dest, uint8_t *src,
00434                                int src_x, int src_y,
00435                                op_pixels_func *pix_op,
00436                                int16_t mv[5][2]/* mid top left right bottom*/)
00437 #define MID    0
00438 {
00439     int i;
00440     uint8_t *ptr[5];
00441 
00442     av_assert2(s->quarter_sample==0);
00443 
00444     for(i=0; i<5; i++){
00445         if(i && mv[i][0]==mv[MID][0] && mv[i][1]==mv[MID][1]){
00446             ptr[i]= ptr[MID];
00447         }else{
00448             ptr[i]= s->obmc_scratchpad + 8*(i&1) + s->linesize*8*(i>>1);
00449             hpel_motion(s, ptr[i], src, 0, 0,
00450                         src_x, src_y,
00451                         s->width, s->height, s->linesize,
00452                         s->h_edge_pos, s->v_edge_pos,
00453                         8, 8, pix_op,
00454                         mv[i][0], mv[i][1]);
00455         }
00456     }
00457 
00458     put_obmc(dest, ptr, s->linesize);
00459 }
00460 
00461 static inline void qpel_motion(MpegEncContext *s,
00462                                uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
00463                                int field_based, int bottom_field, int field_select,
00464                                uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
00465                                qpel_mc_func (*qpix_op)[16],
00466                                int motion_x, int motion_y, int h)
00467 {
00468     uint8_t *ptr_y, *ptr_cb, *ptr_cr;
00469     int dxy, uvdxy, mx, my, src_x, src_y, uvsrc_x, uvsrc_y, v_edge_pos, linesize, uvlinesize;
00470 
00471     dxy = ((motion_y & 3) << 2) | (motion_x & 3);
00472     src_x = s->mb_x *  16                 + (motion_x >> 2);
00473     src_y = s->mb_y * (16 >> field_based) + (motion_y >> 2);
00474 
00475     v_edge_pos = s->v_edge_pos >> field_based;
00476     linesize = s->linesize << field_based;
00477     uvlinesize = s->uvlinesize << field_based;
00478 
00479     if(field_based){
00480         mx= motion_x/2;
00481         my= motion_y>>1;
00482     }else if(s->workaround_bugs&FF_BUG_QPEL_CHROMA2){
00483         static const int rtab[8]= {0,0,1,1,0,0,0,1};
00484         mx= (motion_x>>1) + rtab[motion_x&7];
00485         my= (motion_y>>1) + rtab[motion_y&7];
00486     }else if(s->workaround_bugs&FF_BUG_QPEL_CHROMA){
00487         mx= (motion_x>>1)|(motion_x&1);
00488         my= (motion_y>>1)|(motion_y&1);
00489     }else{
00490         mx= motion_x/2;
00491         my= motion_y/2;
00492     }
00493     mx= (mx>>1)|(mx&1);
00494     my= (my>>1)|(my&1);
00495 
00496     uvdxy= (mx&1) | ((my&1)<<1);
00497     mx>>=1;
00498     my>>=1;
00499 
00500     uvsrc_x = s->mb_x *  8                 + mx;
00501     uvsrc_y = s->mb_y * (8 >> field_based) + my;
00502 
00503     ptr_y  = ref_picture[0] +   src_y *   linesize +   src_x;
00504     ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
00505     ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
00506 
00507     if(   (unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x&3) - 16, 0)
00508        || (unsigned)src_y > FFMAX(   v_edge_pos - (motion_y&3) - h , 0)){
00509         s->dsp.emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize,
00510                             17, 17+field_based, src_x, src_y<<field_based,
00511                             s->h_edge_pos, s->v_edge_pos);
00512         ptr_y= s->edge_emu_buffer;
00513         if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
00514             uint8_t *uvbuf= s->edge_emu_buffer + 18*s->linesize;
00515             s->dsp.emulated_edge_mc(uvbuf, ptr_cb, s->uvlinesize,
00516                                 9, 9 + field_based,
00517                                 uvsrc_x, uvsrc_y<<field_based,
00518                                 s->h_edge_pos>>1, s->v_edge_pos>>1);
00519             s->dsp.emulated_edge_mc(uvbuf + 16, ptr_cr, s->uvlinesize,
00520                                 9, 9 + field_based,
00521                                 uvsrc_x, uvsrc_y<<field_based,
00522                                 s->h_edge_pos>>1, s->v_edge_pos>>1);
00523             ptr_cb= uvbuf;
00524             ptr_cr= uvbuf + 16;
00525         }
00526     }
00527 
00528     if(!field_based)
00529         qpix_op[0][dxy](dest_y, ptr_y, linesize);
00530     else{
00531         if(bottom_field){
00532             dest_y += s->linesize;
00533             dest_cb+= s->uvlinesize;
00534             dest_cr+= s->uvlinesize;
00535         }
00536 
00537         if(field_select){
00538             ptr_y  += s->linesize;
00539             ptr_cb += s->uvlinesize;
00540             ptr_cr += s->uvlinesize;
00541         }
00542         //damn interlaced mode
00543         //FIXME boundary mirroring is not exactly correct here
00544         qpix_op[1][dxy](dest_y  , ptr_y  , linesize);
00545         qpix_op[1][dxy](dest_y+8, ptr_y+8, linesize);
00546     }
00547     if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
00548         pix_op[1][uvdxy](dest_cr, ptr_cr, uvlinesize, h >> 1);
00549         pix_op[1][uvdxy](dest_cb, ptr_cb, uvlinesize, h >> 1);
00550     }
00551 }
00552 
00556 static inline void chroma_4mv_motion(MpegEncContext *s,
00557                                      uint8_t *dest_cb, uint8_t *dest_cr,
00558                                      uint8_t **ref_picture,
00559                                      op_pixels_func *pix_op,
00560                                      int mx, int my){
00561     int dxy, emu=0, src_x, src_y, offset;
00562     uint8_t *ptr;
00563 
00564     /* In case of 8X8, we construct a single chroma motion vector
00565        with a special rounding */
00566     mx= ff_h263_round_chroma(mx);
00567     my= ff_h263_round_chroma(my);
00568 
00569     dxy = ((my & 1) << 1) | (mx & 1);
00570     mx >>= 1;
00571     my >>= 1;
00572 
00573     src_x = s->mb_x * 8 + mx;
00574     src_y = s->mb_y * 8 + my;
00575     src_x = av_clip(src_x, -8, (s->width >> 1));
00576     if (src_x == (s->width >> 1))
00577         dxy &= ~1;
00578     src_y = av_clip(src_y, -8, (s->height >> 1));
00579     if (src_y == (s->height >> 1))
00580         dxy &= ~2;
00581 
00582     offset = src_y * s->uvlinesize + src_x;
00583     ptr = ref_picture[1] + offset;
00584     if(s->flags&CODEC_FLAG_EMU_EDGE){
00585         if(   (unsigned)src_x > FFMAX((s->h_edge_pos>>1) - (dxy &1) - 8, 0)
00586            || (unsigned)src_y > FFMAX((s->v_edge_pos>>1) - (dxy>>1) - 8, 0)){
00587             s->dsp.emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize,
00588                                 9, 9, src_x, src_y,
00589                                 s->h_edge_pos>>1, s->v_edge_pos>>1);
00590             ptr= s->edge_emu_buffer;
00591             emu=1;
00592         }
00593     }
00594     pix_op[dxy](dest_cb, ptr, s->uvlinesize, 8);
00595 
00596     ptr = ref_picture[2] + offset;
00597     if(emu){
00598         s->dsp.emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize,
00599                             9, 9, src_x, src_y,
00600                             s->h_edge_pos>>1, s->v_edge_pos>>1);
00601         ptr= s->edge_emu_buffer;
00602     }
00603     pix_op[dxy](dest_cr, ptr, s->uvlinesize, 8);
00604 }
00605 
00606 static inline void prefetch_motion(MpegEncContext *s, uint8_t **pix, int dir){
00607     /* fetch pixels for estimated mv 4 macroblocks ahead
00608      * optimized for 64byte cache lines */
00609     const int shift = s->quarter_sample ? 2 : 1;
00610     const int mx= (s->mv[dir][0][0]>>shift) + 16*s->mb_x + 8;
00611     const int my= (s->mv[dir][0][1]>>shift) + 16*s->mb_y;
00612     int off= mx + (my + (s->mb_x&3)*4)*s->linesize + 64;
00613     s->dsp.prefetch(pix[0]+off, s->linesize, 4);
00614     off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
00615     s->dsp.prefetch(pix[1]+off, pix[2]-pix[1], 2);
00616 }
00617 
00630 static av_always_inline void MPV_motion_internal(MpegEncContext *s,
00631                               uint8_t *dest_y, uint8_t *dest_cb,
00632                               uint8_t *dest_cr, int dir,
00633                               uint8_t **ref_picture,
00634                               op_pixels_func (*pix_op)[4],
00635                               qpel_mc_func (*qpix_op)[16], int is_mpeg12)
00636 {
00637     int dxy, mx, my, src_x, src_y, motion_x, motion_y;
00638     int mb_x, mb_y, i;
00639     uint8_t *ptr, *dest;
00640 
00641     mb_x = s->mb_x;
00642     mb_y = s->mb_y;
00643 
00644     prefetch_motion(s, ref_picture, dir);
00645 
00646     if(!is_mpeg12 && s->obmc && s->pict_type != AV_PICTURE_TYPE_B){
00647         int16_t mv_cache[4][4][2];
00648         const int xy= s->mb_x + s->mb_y*s->mb_stride;
00649         const int mot_stride= s->b8_stride;
00650         const int mot_xy= mb_x*2 + mb_y*2*mot_stride;
00651 
00652         av_assert2(!s->mb_skipped);
00653 
00654         memcpy(mv_cache[1][1], s->current_picture.f.motion_val[0][mot_xy             ], sizeof(int16_t) * 4);
00655         memcpy(mv_cache[2][1], s->current_picture.f.motion_val[0][mot_xy + mot_stride], sizeof(int16_t) * 4);
00656         memcpy(mv_cache[3][1], s->current_picture.f.motion_val[0][mot_xy + mot_stride], sizeof(int16_t) * 4);
00657 
00658         if (mb_y == 0 || IS_INTRA(s->current_picture.f.mb_type[xy - s->mb_stride])) {
00659             memcpy(mv_cache[0][1], mv_cache[1][1], sizeof(int16_t)*4);
00660         }else{
00661             memcpy(mv_cache[0][1], s->current_picture.f.motion_val[0][mot_xy - mot_stride], sizeof(int16_t) * 4);
00662         }
00663 
00664         if (mb_x == 0 || IS_INTRA(s->current_picture.f.mb_type[xy - 1])) {
00665             AV_COPY32(mv_cache[1][0], mv_cache[1][1]);
00666             AV_COPY32(mv_cache[2][0], mv_cache[2][1]);
00667         }else{
00668             AV_COPY32(mv_cache[1][0], s->current_picture.f.motion_val[0][mot_xy - 1]);
00669             AV_COPY32(mv_cache[2][0], s->current_picture.f.motion_val[0][mot_xy - 1 + mot_stride]);
00670         }
00671 
00672         if (mb_x + 1 >= s->mb_width || IS_INTRA(s->current_picture.f.mb_type[xy + 1])) {
00673             AV_COPY32(mv_cache[1][3], mv_cache[1][2]);
00674             AV_COPY32(mv_cache[2][3], mv_cache[2][2]);
00675         }else{
00676             AV_COPY32(mv_cache[1][3], s->current_picture.f.motion_val[0][mot_xy + 2]);
00677             AV_COPY32(mv_cache[2][3], s->current_picture.f.motion_val[0][mot_xy + 2 + mot_stride]);
00678         }
00679 
00680         mx = 0;
00681         my = 0;
00682         for(i=0;i<4;i++) {
00683             const int x= (i&1)+1;
00684             const int y= (i>>1)+1;
00685             int16_t mv[5][2]= {
00686                 {mv_cache[y][x  ][0], mv_cache[y][x  ][1]},
00687                 {mv_cache[y-1][x][0], mv_cache[y-1][x][1]},
00688                 {mv_cache[y][x-1][0], mv_cache[y][x-1][1]},
00689                 {mv_cache[y][x+1][0], mv_cache[y][x+1][1]},
00690                 {mv_cache[y+1][x][0], mv_cache[y+1][x][1]}};
00691             //FIXME cleanup
00692             obmc_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
00693                         ref_picture[0],
00694                         mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >>1) * 8,
00695                         pix_op[1],
00696                         mv);
00697 
00698             mx += mv[0][0];
00699             my += mv[0][1];
00700         }
00701         if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY))
00702             chroma_4mv_motion(s, dest_cb, dest_cr, ref_picture, pix_op[1], mx, my);
00703 
00704         return;
00705     }
00706 
00707     switch(s->mv_type) {
00708     case MV_TYPE_16X16:
00709         if(s->mcsel){
00710             if(s->real_sprite_warping_points==1){
00711                 gmc1_motion(s, dest_y, dest_cb, dest_cr,
00712                             ref_picture);
00713             }else{
00714                 gmc_motion(s, dest_y, dest_cb, dest_cr,
00715                             ref_picture);
00716             }
00717         }else if(!is_mpeg12 && s->quarter_sample){
00718             qpel_motion(s, dest_y, dest_cb, dest_cr,
00719                         0, 0, 0,
00720                         ref_picture, pix_op, qpix_op,
00721                         s->mv[dir][0][0], s->mv[dir][0][1], 16);
00722         } else if (!is_mpeg12 && (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) &&
00723                    s->mspel && s->codec_id == AV_CODEC_ID_WMV2) {
00724             ff_mspel_motion(s, dest_y, dest_cb, dest_cr,
00725                         ref_picture, pix_op,
00726                         s->mv[dir][0][0], s->mv[dir][0][1], 16);
00727         }else
00728         {
00729             mpeg_motion(s, dest_y, dest_cb, dest_cr,
00730                         0, 0, 0,
00731                         ref_picture, pix_op,
00732                         s->mv[dir][0][0], s->mv[dir][0][1], 16, mb_y);
00733         }
00734         break;
00735     case MV_TYPE_8X8:
00736     if (!is_mpeg12) {
00737         mx = 0;
00738         my = 0;
00739         if(s->quarter_sample){
00740             for(i=0;i<4;i++) {
00741                 motion_x = s->mv[dir][i][0];
00742                 motion_y = s->mv[dir][i][1];
00743 
00744                 dxy = ((motion_y & 3) << 2) | (motion_x & 3);
00745                 src_x = mb_x * 16 + (motion_x >> 2) + (i & 1) * 8;
00746                 src_y = mb_y * 16 + (motion_y >> 2) + (i >>1) * 8;
00747 
00748                 /* WARNING: do no forget half pels */
00749                 src_x = av_clip(src_x, -16, s->width);
00750                 if (src_x == s->width)
00751                     dxy &= ~3;
00752                 src_y = av_clip(src_y, -16, s->height);
00753                 if (src_y == s->height)
00754                     dxy &= ~12;
00755 
00756                 ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
00757                 if(s->flags&CODEC_FLAG_EMU_EDGE){
00758                     if(   (unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x&3) - 8, 0)
00759                        || (unsigned)src_y > FFMAX(s->v_edge_pos - (motion_y&3) - 8, 0)){
00760                         s->dsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
00761                                             s->linesize, 9, 9,
00762                                             src_x, src_y,
00763                                             s->h_edge_pos, s->v_edge_pos);
00764                         ptr= s->edge_emu_buffer;
00765                     }
00766                 }
00767                 dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
00768                 qpix_op[1][dxy](dest, ptr, s->linesize);
00769 
00770                 mx += s->mv[dir][i][0]/2;
00771                 my += s->mv[dir][i][1]/2;
00772             }
00773         }else{
00774             for(i=0;i<4;i++) {
00775                 hpel_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
00776                             ref_picture[0], 0, 0,
00777                             mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >>1) * 8,
00778                             s->width, s->height, s->linesize,
00779                             s->h_edge_pos, s->v_edge_pos,
00780                             8, 8, pix_op[1],
00781                             s->mv[dir][i][0], s->mv[dir][i][1]);
00782 
00783                 mx += s->mv[dir][i][0];
00784                 my += s->mv[dir][i][1];
00785             }
00786         }
00787 
00788         if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY))
00789             chroma_4mv_motion(s, dest_cb, dest_cr, ref_picture, pix_op[1], mx, my);
00790     }
00791         break;
00792     case MV_TYPE_FIELD:
00793         if (s->picture_structure == PICT_FRAME) {
00794             if(!is_mpeg12 && s->quarter_sample){
00795                 for(i=0; i<2; i++){
00796                     qpel_motion(s, dest_y, dest_cb, dest_cr,
00797                                 1, i, s->field_select[dir][i],
00798                                 ref_picture, pix_op, qpix_op,
00799                                 s->mv[dir][i][0], s->mv[dir][i][1], 8);
00800                 }
00801             }else{
00802                 /* top field */
00803                 mpeg_motion(s, dest_y, dest_cb, dest_cr,
00804                             1, 0, s->field_select[dir][0],
00805                             ref_picture, pix_op,
00806                             s->mv[dir][0][0], s->mv[dir][0][1], 8, mb_y);
00807                 /* bottom field */
00808                 mpeg_motion(s, dest_y, dest_cb, dest_cr,
00809                             1, 1, s->field_select[dir][1],
00810                             ref_picture, pix_op,
00811                             s->mv[dir][1][0], s->mv[dir][1][1], 8, mb_y);
00812             }
00813         } else {
00814             if(s->picture_structure != s->field_select[dir][0] + 1 && s->pict_type != AV_PICTURE_TYPE_B && !s->first_field){
00815                 ref_picture = s->current_picture_ptr->f.data;
00816             }
00817 
00818             mpeg_motion(s, dest_y, dest_cb, dest_cr,
00819                         0, 0, s->field_select[dir][0],
00820                         ref_picture, pix_op,
00821                         s->mv[dir][0][0], s->mv[dir][0][1], 16, mb_y>>1);
00822         }
00823         break;
00824     case MV_TYPE_16X8:
00825         for(i=0; i<2; i++){
00826             uint8_t ** ref2picture;
00827 
00828             if(s->picture_structure == s->field_select[dir][i] + 1
00829                || s->pict_type == AV_PICTURE_TYPE_B || s->first_field){
00830                 ref2picture= ref_picture;
00831             }else{
00832                 ref2picture = s->current_picture_ptr->f.data;
00833             }
00834 
00835             mpeg_motion(s, dest_y, dest_cb, dest_cr,
00836                         0, 0, s->field_select[dir][i],
00837                         ref2picture, pix_op,
00838                         s->mv[dir][i][0], s->mv[dir][i][1] + 16*i, 8, mb_y>>1);
00839 
00840             dest_y += 16*s->linesize;
00841             dest_cb+= (16>>s->chroma_y_shift)*s->uvlinesize;
00842             dest_cr+= (16>>s->chroma_y_shift)*s->uvlinesize;
00843         }
00844         break;
00845     case MV_TYPE_DMV:
00846         if(s->picture_structure == PICT_FRAME){
00847             for(i=0; i<2; i++){
00848                 int j;
00849                 for(j=0; j<2; j++){
00850                     mpeg_motion(s, dest_y, dest_cb, dest_cr,
00851                                 1, j, j^i,
00852                                 ref_picture, pix_op,
00853                                 s->mv[dir][2*i + j][0], s->mv[dir][2*i + j][1], 8, mb_y);
00854                 }
00855                 pix_op = s->dsp.avg_pixels_tab;
00856             }
00857         }else{
00858             for(i=0; i<2; i++){
00859                 mpeg_motion(s, dest_y, dest_cb, dest_cr,
00860                             0, 0, s->picture_structure != i+1,
00861                             ref_picture, pix_op,
00862                             s->mv[dir][2*i][0],s->mv[dir][2*i][1],16, mb_y>>1);
00863 
00864                 // after put we make avg of the same block
00865                 pix_op=s->dsp.avg_pixels_tab;
00866 
00867                 //opposite parity is always in the same frame if this is second field
00868                 if(!s->first_field){
00869                     ref_picture = s->current_picture_ptr->f.data;
00870                 }
00871             }
00872         }
00873     break;
00874     default: av_assert2(0);
00875     }
00876 }
00877 
00878 static inline void MPV_motion(MpegEncContext *s,
00879                               uint8_t *dest_y, uint8_t *dest_cb,
00880                               uint8_t *dest_cr, int dir,
00881                               uint8_t **ref_picture,
00882                               op_pixels_func (*pix_op)[4],
00883                               qpel_mc_func (*qpix_op)[16])
00884 {
00885 #if !CONFIG_SMALL
00886     if(s->out_format == FMT_MPEG1)
00887         MPV_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
00888                             ref_picture, pix_op, qpix_op, 1);
00889     else
00890 #endif
00891         MPV_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
00892                             ref_picture, pix_op, qpix_op, 0);
00893 }
00894 #endif /* AVCODEC_MPEGVIDEO_COMMON_H */