libavcodec/mpegvideo_common.h
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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 Libav.
00009  *
00010  * Libav 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  * Libav 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 Libav; 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 "avcodec.h"
00035 #include "dsputil.h"
00036 #include "mpegvideo.h"
00037 #include "mjpegenc.h"
00038 #include "msmpeg4.h"
00039 #include "faandct.h"
00040 #include <limits.h>
00041 
00042 int dct_quantize_c(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
00043 
00048 int alloc_picture(MpegEncContext *s, Picture *pic, int shared);
00049 
00054 void MPV_common_defaults(MpegEncContext *s);
00055 
00056 static inline void gmc1_motion(MpegEncContext *s,
00057                                uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
00058                                uint8_t **ref_picture)
00059 {
00060     uint8_t *ptr;
00061     int offset, src_x, src_y, linesize, uvlinesize;
00062     int motion_x, motion_y;
00063     int emu=0;
00064 
00065     motion_x= s->sprite_offset[0][0];
00066     motion_y= s->sprite_offset[0][1];
00067     src_x = s->mb_x * 16 + (motion_x >> (s->sprite_warping_accuracy+1));
00068     src_y = s->mb_y * 16 + (motion_y >> (s->sprite_warping_accuracy+1));
00069     motion_x<<=(3-s->sprite_warping_accuracy);
00070     motion_y<<=(3-s->sprite_warping_accuracy);
00071     src_x = av_clip(src_x, -16, s->width);
00072     if (src_x == s->width)
00073         motion_x =0;
00074     src_y = av_clip(src_y, -16, s->height);
00075     if (src_y == s->height)
00076         motion_y =0;
00077 
00078     linesize = s->linesize;
00079     uvlinesize = s->uvlinesize;
00080 
00081     ptr = ref_picture[0] + (src_y * linesize) + src_x;
00082 
00083     if(s->flags&CODEC_FLAG_EMU_EDGE){
00084         if(   (unsigned)src_x >= FFMAX(s->h_edge_pos - 17, 0)
00085            || (unsigned)src_y >= FFMAX(s->v_edge_pos - 17, 0)){
00086             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);
00087             ptr= s->edge_emu_buffer;
00088         }
00089     }
00090 
00091     if((motion_x|motion_y)&7){
00092         s->dsp.gmc1(dest_y  , ptr  , linesize, 16, motion_x&15, motion_y&15, 128 - s->no_rounding);
00093         s->dsp.gmc1(dest_y+8, ptr+8, linesize, 16, motion_x&15, motion_y&15, 128 - s->no_rounding);
00094     }else{
00095         int dxy;
00096 
00097         dxy= ((motion_x>>3)&1) | ((motion_y>>2)&2);
00098         if (s->no_rounding){
00099             s->dsp.put_no_rnd_pixels_tab[0][dxy](dest_y, ptr, linesize, 16);
00100         }else{
00101             s->dsp.put_pixels_tab       [0][dxy](dest_y, ptr, linesize, 16);
00102         }
00103     }
00104 
00105     if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
00106 
00107     motion_x= s->sprite_offset[1][0];
00108     motion_y= s->sprite_offset[1][1];
00109     src_x = s->mb_x * 8 + (motion_x >> (s->sprite_warping_accuracy+1));
00110     src_y = s->mb_y * 8 + (motion_y >> (s->sprite_warping_accuracy+1));
00111     motion_x<<=(3-s->sprite_warping_accuracy);
00112     motion_y<<=(3-s->sprite_warping_accuracy);
00113     src_x = av_clip(src_x, -8, s->width>>1);
00114     if (src_x == s->width>>1)
00115         motion_x =0;
00116     src_y = av_clip(src_y, -8, s->height>>1);
00117     if (src_y == s->height>>1)
00118         motion_y =0;
00119 
00120     offset = (src_y * uvlinesize) + src_x;
00121     ptr = ref_picture[1] + offset;
00122     if(s->flags&CODEC_FLAG_EMU_EDGE){
00123         if(   (unsigned)src_x >= FFMAX((s->h_edge_pos>>1) - 9, 0)
00124            || (unsigned)src_y >= FFMAX((s->v_edge_pos>>1) - 9, 0)){
00125             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);
00126             ptr= s->edge_emu_buffer;
00127             emu=1;
00128         }
00129     }
00130     s->dsp.gmc1(dest_cb, ptr, uvlinesize, 8, motion_x&15, motion_y&15, 128 - s->no_rounding);
00131 
00132     ptr = ref_picture[2] + offset;
00133     if(emu){
00134         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);
00135         ptr= s->edge_emu_buffer;
00136     }
00137     s->dsp.gmc1(dest_cr, ptr, uvlinesize, 8, motion_x&15, motion_y&15, 128 - s->no_rounding);
00138 
00139     return;
00140 }
00141 
00142 static inline void gmc_motion(MpegEncContext *s,
00143                                uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
00144                                uint8_t **ref_picture)
00145 {
00146     uint8_t *ptr;
00147     int linesize, uvlinesize;
00148     const int a= s->sprite_warping_accuracy;
00149     int ox, oy;
00150 
00151     linesize = s->linesize;
00152     uvlinesize = s->uvlinesize;
00153 
00154     ptr = ref_picture[0];
00155 
00156     ox= s->sprite_offset[0][0] + s->sprite_delta[0][0]*s->mb_x*16 + s->sprite_delta[0][1]*s->mb_y*16;
00157     oy= s->sprite_offset[0][1] + s->sprite_delta[1][0]*s->mb_x*16 + s->sprite_delta[1][1]*s->mb_y*16;
00158 
00159     s->dsp.gmc(dest_y, ptr, linesize, 16,
00160            ox,
00161            oy,
00162            s->sprite_delta[0][0], s->sprite_delta[0][1],
00163            s->sprite_delta[1][0], s->sprite_delta[1][1],
00164            a+1, (1<<(2*a+1)) - s->no_rounding,
00165            s->h_edge_pos, s->v_edge_pos);
00166     s->dsp.gmc(dest_y+8, ptr, linesize, 16,
00167            ox + s->sprite_delta[0][0]*8,
00168            oy + s->sprite_delta[1][0]*8,
00169            s->sprite_delta[0][0], s->sprite_delta[0][1],
00170            s->sprite_delta[1][0], s->sprite_delta[1][1],
00171            a+1, (1<<(2*a+1)) - s->no_rounding,
00172            s->h_edge_pos, s->v_edge_pos);
00173 
00174     if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
00175 
00176     ox= s->sprite_offset[1][0] + s->sprite_delta[0][0]*s->mb_x*8 + s->sprite_delta[0][1]*s->mb_y*8;
00177     oy= s->sprite_offset[1][1] + s->sprite_delta[1][0]*s->mb_x*8 + s->sprite_delta[1][1]*s->mb_y*8;
00178 
00179     ptr = ref_picture[1];
00180     s->dsp.gmc(dest_cb, ptr, uvlinesize, 8,
00181            ox,
00182            oy,
00183            s->sprite_delta[0][0], s->sprite_delta[0][1],
00184            s->sprite_delta[1][0], s->sprite_delta[1][1],
00185            a+1, (1<<(2*a+1)) - s->no_rounding,
00186            s->h_edge_pos>>1, s->v_edge_pos>>1);
00187 
00188     ptr = ref_picture[2];
00189     s->dsp.gmc(dest_cr, ptr, uvlinesize, 8,
00190            ox,
00191            oy,
00192            s->sprite_delta[0][0], s->sprite_delta[0][1],
00193            s->sprite_delta[1][0], s->sprite_delta[1][1],
00194            a+1, (1<<(2*a+1)) - s->no_rounding,
00195            s->h_edge_pos>>1, s->v_edge_pos>>1);
00196 }
00197 
00198 static inline int hpel_motion(MpegEncContext *s,
00199                                   uint8_t *dest, uint8_t *src,
00200                                   int field_based, int field_select,
00201                                   int src_x, int src_y,
00202                                   int width, int height, int stride,
00203                                   int h_edge_pos, int v_edge_pos,
00204                                   int w, int h, op_pixels_func *pix_op,
00205                                   int motion_x, int motion_y)
00206 {
00207     int dxy;
00208     int emu=0;
00209 
00210     dxy = ((motion_y & 1) << 1) | (motion_x & 1);
00211     src_x += motion_x >> 1;
00212     src_y += motion_y >> 1;
00213 
00214     /* WARNING: do no forget half pels */
00215     src_x = av_clip(src_x, -16, width); //FIXME unneeded for emu?
00216     if (src_x == width)
00217         dxy &= ~1;
00218     src_y = av_clip(src_y, -16, height);
00219     if (src_y == height)
00220         dxy &= ~2;
00221     src += src_y * stride + src_x;
00222 
00223     if(s->unrestricted_mv && (s->flags&CODEC_FLAG_EMU_EDGE)){
00224         if(   (unsigned)src_x > FFMAX(h_edge_pos - (motion_x&1) - w, 0)
00225            || (unsigned)src_y > FFMAX(v_edge_pos - (motion_y&1) - h, 0)){
00226             s->dsp.emulated_edge_mc(s->edge_emu_buffer, src, s->linesize, w+1, (h+1)<<field_based,
00227                              src_x, src_y<<field_based, h_edge_pos, s->v_edge_pos);
00228             src= s->edge_emu_buffer;
00229             emu=1;
00230         }
00231     }
00232     if(field_select)
00233         src += s->linesize;
00234     pix_op[dxy](dest, src, stride, h);
00235     return emu;
00236 }
00237 
00238 static av_always_inline
00239 void mpeg_motion_internal(MpegEncContext *s,
00240                  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
00241                  int field_based, int bottom_field, int field_select,
00242                  uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
00243                  int motion_x, int motion_y, int h, int is_mpeg12, int mb_y)
00244 {
00245     uint8_t *ptr_y, *ptr_cb, *ptr_cr;
00246     int dxy, uvdxy, mx, my, src_x, src_y,
00247         uvsrc_x, uvsrc_y, v_edge_pos;
00248     ptrdiff_t uvlinesize, linesize;
00249 
00250 #if 0
00251 if(s->quarter_sample)
00252 {
00253     motion_x>>=1;
00254     motion_y>>=1;
00255 }
00256 #endif
00257 
00258     v_edge_pos = s->v_edge_pos >> field_based;
00259     linesize   = s->current_picture.f.linesize[0] << field_based;
00260     uvlinesize = s->current_picture.f.linesize[1] << field_based;
00261 
00262     dxy = ((motion_y & 1) << 1) | (motion_x & 1);
00263     src_x = s->mb_x* 16               + (motion_x >> 1);
00264     src_y =(   mb_y<<(4-field_based)) + (motion_y >> 1);
00265 
00266     if (!is_mpeg12 && s->out_format == FMT_H263) {
00267         if((s->workaround_bugs & FF_BUG_HPEL_CHROMA) && field_based){
00268             mx = (motion_x>>1)|(motion_x&1);
00269             my = motion_y >>1;
00270             uvdxy = ((my & 1) << 1) | (mx & 1);
00271             uvsrc_x = s->mb_x* 8               + (mx >> 1);
00272             uvsrc_y =(   mb_y<<(3-field_based))+ (my >> 1);
00273         }else{
00274             uvdxy = dxy | (motion_y & 2) | ((motion_x & 2) >> 1);
00275             uvsrc_x = src_x>>1;
00276             uvsrc_y = src_y>>1;
00277         }
00278     }else if(!is_mpeg12 && s->out_format == FMT_H261){//even chroma mv's are full pel in H261
00279         mx = motion_x / 4;
00280         my = motion_y / 4;
00281         uvdxy = 0;
00282         uvsrc_x = s->mb_x*8 + mx;
00283         uvsrc_y =    mb_y*8 + my;
00284     } else {
00285         if(s->chroma_y_shift){
00286             mx = motion_x / 2;
00287             my = motion_y / 2;
00288             uvdxy = ((my & 1) << 1) | (mx & 1);
00289             uvsrc_x = s->mb_x* 8               + (mx >> 1);
00290             uvsrc_y =(   mb_y<<(3-field_based))+ (my >> 1);
00291         } else {
00292             if(s->chroma_x_shift){
00293             //Chroma422
00294                 mx = motion_x / 2;
00295                 uvdxy = ((motion_y & 1) << 1) | (mx & 1);
00296                 uvsrc_x = s->mb_x* 8           + (mx >> 1);
00297                 uvsrc_y = src_y;
00298             } else {
00299             //Chroma444
00300                 uvdxy = dxy;
00301                 uvsrc_x = src_x;
00302                 uvsrc_y = src_y;
00303             }
00304         }
00305     }
00306 
00307     ptr_y  = ref_picture[0] + src_y * linesize + src_x;
00308     ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
00309     ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
00310 
00311     if(   (unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x&1) - 16, 0)
00312        || (unsigned)src_y > FFMAX(   v_edge_pos - (motion_y&1) - h , 0)){
00313             if(is_mpeg12 || s->codec_id == CODEC_ID_MPEG2VIDEO ||
00314                s->codec_id == CODEC_ID_MPEG1VIDEO){
00315                 av_log(s->avctx,AV_LOG_DEBUG,
00316                         "MPEG motion vector out of boundary (%d %d)\n", src_x, src_y);
00317                 return;
00318             }
00319             s->dsp.emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize,
00320                                 17, 17+field_based,
00321                                 src_x, src_y<<field_based,
00322                                 s->h_edge_pos, s->v_edge_pos);
00323             ptr_y = s->edge_emu_buffer;
00324             if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
00325                 uint8_t *uvbuf= s->edge_emu_buffer+18*s->linesize;
00326                 s->dsp.emulated_edge_mc(uvbuf ,
00327                                     ptr_cb, s->uvlinesize,
00328                                     9, 9+field_based,
00329                                     uvsrc_x, uvsrc_y<<field_based,
00330                                     s->h_edge_pos>>1, s->v_edge_pos>>1);
00331                 s->dsp.emulated_edge_mc(uvbuf+16,
00332                                     ptr_cr, s->uvlinesize,
00333                                     9, 9+field_based,
00334                                     uvsrc_x, uvsrc_y<<field_based,
00335                                     s->h_edge_pos>>1, s->v_edge_pos>>1);
00336                 ptr_cb= uvbuf;
00337                 ptr_cr= uvbuf+16;
00338             }
00339     }
00340 
00341     if(bottom_field){ //FIXME use this for field pix too instead of the obnoxious hack which changes picture.data
00342         dest_y += s->linesize;
00343         dest_cb+= s->uvlinesize;
00344         dest_cr+= s->uvlinesize;
00345     }
00346 
00347     if(field_select){
00348         ptr_y += s->linesize;
00349         ptr_cb+= s->uvlinesize;
00350         ptr_cr+= s->uvlinesize;
00351     }
00352 
00353     pix_op[0][dxy](dest_y, ptr_y, linesize, h);
00354 
00355     if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
00356         pix_op[s->chroma_x_shift][uvdxy]
00357                 (dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift);
00358         pix_op[s->chroma_x_shift][uvdxy]
00359                 (dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift);
00360     }
00361     if(!is_mpeg12 && (CONFIG_H261_ENCODER || CONFIG_H261_DECODER) &&
00362          s->out_format == FMT_H261){
00363         ff_h261_loop_filter(s);
00364     }
00365 }
00366 /* apply one mpeg motion vector to the three components */
00367 static av_always_inline
00368 void mpeg_motion(MpegEncContext *s,
00369                  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
00370                  int field_based, int bottom_field, int field_select,
00371                  uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
00372                  int motion_x, int motion_y, int h, int mb_y)
00373 {
00374 #if !CONFIG_SMALL
00375     if(s->out_format == FMT_MPEG1)
00376         mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, field_based,
00377                     bottom_field, field_select, ref_picture, pix_op,
00378                     motion_x, motion_y, h, 1, mb_y);
00379     else
00380 #endif
00381         mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, field_based,
00382                     bottom_field, field_select, ref_picture, pix_op,
00383                     motion_x, motion_y, h, 0, mb_y);
00384 }
00385 
00386 //FIXME move to dsputil, avg variant, 16x16 version
00387 static inline void put_obmc(uint8_t *dst, uint8_t *src[5], int stride){
00388     int x;
00389     uint8_t * const top   = src[1];
00390     uint8_t * const left  = src[2];
00391     uint8_t * const mid   = src[0];
00392     uint8_t * const right = src[3];
00393     uint8_t * const bottom= src[4];
00394 #define OBMC_FILTER(x, t, l, m, r, b)\
00395     dst[x]= (t*top[x] + l*left[x] + m*mid[x] + r*right[x] + b*bottom[x] + 4)>>3
00396 #define OBMC_FILTER4(x, t, l, m, r, b)\
00397     OBMC_FILTER(x         , t, l, m, r, b);\
00398     OBMC_FILTER(x+1       , t, l, m, r, b);\
00399     OBMC_FILTER(x  +stride, t, l, m, r, b);\
00400     OBMC_FILTER(x+1+stride, t, l, m, r, b);
00401 
00402     x=0;
00403     OBMC_FILTER (x  , 2, 2, 4, 0, 0);
00404     OBMC_FILTER (x+1, 2, 1, 5, 0, 0);
00405     OBMC_FILTER4(x+2, 2, 1, 5, 0, 0);
00406     OBMC_FILTER4(x+4, 2, 0, 5, 1, 0);
00407     OBMC_FILTER (x+6, 2, 0, 5, 1, 0);
00408     OBMC_FILTER (x+7, 2, 0, 4, 2, 0);
00409     x+= stride;
00410     OBMC_FILTER (x  , 1, 2, 5, 0, 0);
00411     OBMC_FILTER (x+1, 1, 2, 5, 0, 0);
00412     OBMC_FILTER (x+6, 1, 0, 5, 2, 0);
00413     OBMC_FILTER (x+7, 1, 0, 5, 2, 0);
00414     x+= stride;
00415     OBMC_FILTER4(x  , 1, 2, 5, 0, 0);
00416     OBMC_FILTER4(x+2, 1, 1, 6, 0, 0);
00417     OBMC_FILTER4(x+4, 1, 0, 6, 1, 0);
00418     OBMC_FILTER4(x+6, 1, 0, 5, 2, 0);
00419     x+= 2*stride;
00420     OBMC_FILTER4(x  , 0, 2, 5, 0, 1);
00421     OBMC_FILTER4(x+2, 0, 1, 6, 0, 1);
00422     OBMC_FILTER4(x+4, 0, 0, 6, 1, 1);
00423     OBMC_FILTER4(x+6, 0, 0, 5, 2, 1);
00424     x+= 2*stride;
00425     OBMC_FILTER (x  , 0, 2, 5, 0, 1);
00426     OBMC_FILTER (x+1, 0, 2, 5, 0, 1);
00427     OBMC_FILTER4(x+2, 0, 1, 5, 0, 2);
00428     OBMC_FILTER4(x+4, 0, 0, 5, 1, 2);
00429     OBMC_FILTER (x+6, 0, 0, 5, 2, 1);
00430     OBMC_FILTER (x+7, 0, 0, 5, 2, 1);
00431     x+= stride;
00432     OBMC_FILTER (x  , 0, 2, 4, 0, 2);
00433     OBMC_FILTER (x+1, 0, 1, 5, 0, 2);
00434     OBMC_FILTER (x+6, 0, 0, 5, 1, 2);
00435     OBMC_FILTER (x+7, 0, 0, 4, 2, 2);
00436 }
00437 
00438 /* obmc for 1 8x8 luma block */
00439 static inline void obmc_motion(MpegEncContext *s,
00440                                uint8_t *dest, uint8_t *src,
00441                                int src_x, int src_y,
00442                                op_pixels_func *pix_op,
00443                                int16_t mv[5][2]/* mid top left right bottom*/)
00444 #define MID    0
00445 {
00446     int i;
00447     uint8_t *ptr[5];
00448 
00449     assert(s->quarter_sample==0);
00450 
00451     for(i=0; i<5; i++){
00452         if(i && mv[i][0]==mv[MID][0] && mv[i][1]==mv[MID][1]){
00453             ptr[i]= ptr[MID];
00454         }else{
00455             ptr[i]= s->obmc_scratchpad + 8*(i&1) + s->linesize*8*(i>>1);
00456             hpel_motion(s, ptr[i], src, 0, 0,
00457                         src_x, src_y,
00458                         s->width, s->height, s->linesize,
00459                         s->h_edge_pos, s->v_edge_pos,
00460                         8, 8, pix_op,
00461                         mv[i][0], mv[i][1]);
00462         }
00463     }
00464 
00465     put_obmc(dest, ptr, s->linesize);
00466 }
00467 
00468 static inline void qpel_motion(MpegEncContext *s,
00469                                uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
00470                                int field_based, int bottom_field, int field_select,
00471                                uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
00472                                qpel_mc_func (*qpix_op)[16],
00473                                int motion_x, int motion_y, int h)
00474 {
00475     uint8_t *ptr_y, *ptr_cb, *ptr_cr;
00476     int dxy, uvdxy, mx, my, src_x, src_y, uvsrc_x, uvsrc_y, v_edge_pos, linesize, uvlinesize;
00477 
00478     dxy = ((motion_y & 3) << 2) | (motion_x & 3);
00479     src_x = s->mb_x *  16                 + (motion_x >> 2);
00480     src_y = s->mb_y * (16 >> field_based) + (motion_y >> 2);
00481 
00482     v_edge_pos = s->v_edge_pos >> field_based;
00483     linesize = s->linesize << field_based;
00484     uvlinesize = s->uvlinesize << field_based;
00485 
00486     if(field_based){
00487         mx= motion_x/2;
00488         my= motion_y>>1;
00489     }else if(s->workaround_bugs&FF_BUG_QPEL_CHROMA2){
00490         static const int rtab[8]= {0,0,1,1,0,0,0,1};
00491         mx= (motion_x>>1) + rtab[motion_x&7];
00492         my= (motion_y>>1) + rtab[motion_y&7];
00493     }else if(s->workaround_bugs&FF_BUG_QPEL_CHROMA){
00494         mx= (motion_x>>1)|(motion_x&1);
00495         my= (motion_y>>1)|(motion_y&1);
00496     }else{
00497         mx= motion_x/2;
00498         my= motion_y/2;
00499     }
00500     mx= (mx>>1)|(mx&1);
00501     my= (my>>1)|(my&1);
00502 
00503     uvdxy= (mx&1) | ((my&1)<<1);
00504     mx>>=1;
00505     my>>=1;
00506 
00507     uvsrc_x = s->mb_x *  8                 + mx;
00508     uvsrc_y = s->mb_y * (8 >> field_based) + my;
00509 
00510     ptr_y  = ref_picture[0] +   src_y *   linesize +   src_x;
00511     ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
00512     ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
00513 
00514     if(   (unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x&3) - 16, 0)
00515        || (unsigned)src_y > FFMAX(   v_edge_pos - (motion_y&3) - h , 0)){
00516         s->dsp.emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize,
00517                             17, 17+field_based, src_x, src_y<<field_based,
00518                             s->h_edge_pos, s->v_edge_pos);
00519         ptr_y= s->edge_emu_buffer;
00520         if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
00521             uint8_t *uvbuf= s->edge_emu_buffer + 18*s->linesize;
00522             s->dsp.emulated_edge_mc(uvbuf, ptr_cb, s->uvlinesize,
00523                                 9, 9 + field_based,
00524                                 uvsrc_x, uvsrc_y<<field_based,
00525                                 s->h_edge_pos>>1, s->v_edge_pos>>1);
00526             s->dsp.emulated_edge_mc(uvbuf + 16, ptr_cr, s->uvlinesize,
00527                                 9, 9 + field_based,
00528                                 uvsrc_x, uvsrc_y<<field_based,
00529                                 s->h_edge_pos>>1, s->v_edge_pos>>1);
00530             ptr_cb= uvbuf;
00531             ptr_cr= uvbuf + 16;
00532         }
00533     }
00534 
00535     if(!field_based)
00536         qpix_op[0][dxy](dest_y, ptr_y, linesize);
00537     else{
00538         if(bottom_field){
00539             dest_y += s->linesize;
00540             dest_cb+= s->uvlinesize;
00541             dest_cr+= s->uvlinesize;
00542         }
00543 
00544         if(field_select){
00545             ptr_y  += s->linesize;
00546             ptr_cb += s->uvlinesize;
00547             ptr_cr += s->uvlinesize;
00548         }
00549         //damn interlaced mode
00550         //FIXME boundary mirroring is not exactly correct here
00551         qpix_op[1][dxy](dest_y  , ptr_y  , linesize);
00552         qpix_op[1][dxy](dest_y+8, ptr_y+8, linesize);
00553     }
00554     if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
00555         pix_op[1][uvdxy](dest_cr, ptr_cr, uvlinesize, h >> 1);
00556         pix_op[1][uvdxy](dest_cb, ptr_cb, uvlinesize, h >> 1);
00557     }
00558 }
00559 
00563 static inline void chroma_4mv_motion(MpegEncContext *s,
00564                                      uint8_t *dest_cb, uint8_t *dest_cr,
00565                                      uint8_t **ref_picture,
00566                                      op_pixels_func *pix_op,
00567                                      int mx, int my){
00568     int dxy, emu=0, src_x, src_y, offset;
00569     uint8_t *ptr;
00570 
00571     /* In case of 8X8, we construct a single chroma motion vector
00572        with a special rounding */
00573     mx= ff_h263_round_chroma(mx);
00574     my= ff_h263_round_chroma(my);
00575 
00576     dxy = ((my & 1) << 1) | (mx & 1);
00577     mx >>= 1;
00578     my >>= 1;
00579 
00580     src_x = s->mb_x * 8 + mx;
00581     src_y = s->mb_y * 8 + my;
00582     src_x = av_clip(src_x, -8, (s->width >> 1));
00583     if (src_x == (s->width >> 1))
00584         dxy &= ~1;
00585     src_y = av_clip(src_y, -8, (s->height >> 1));
00586     if (src_y == (s->height >> 1))
00587         dxy &= ~2;
00588 
00589     offset = src_y * s->uvlinesize + src_x;
00590     ptr = ref_picture[1] + offset;
00591     if(s->flags&CODEC_FLAG_EMU_EDGE){
00592         if(   (unsigned)src_x > FFMAX((s->h_edge_pos>>1) - (dxy &1) - 8, 0)
00593            || (unsigned)src_y > FFMAX((s->v_edge_pos>>1) - (dxy>>1) - 8, 0)){
00594             s->dsp.emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize,
00595                                 9, 9, src_x, src_y,
00596                                 s->h_edge_pos>>1, s->v_edge_pos>>1);
00597             ptr= s->edge_emu_buffer;
00598             emu=1;
00599         }
00600     }
00601     pix_op[dxy](dest_cb, ptr, s->uvlinesize, 8);
00602 
00603     ptr = ref_picture[2] + offset;
00604     if(emu){
00605         s->dsp.emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize,
00606                             9, 9, src_x, src_y,
00607                             s->h_edge_pos>>1, s->v_edge_pos>>1);
00608         ptr= s->edge_emu_buffer;
00609     }
00610     pix_op[dxy](dest_cr, ptr, s->uvlinesize, 8);
00611 }
00612 
00613 static inline void prefetch_motion(MpegEncContext *s, uint8_t **pix, int dir){
00614     /* fetch pixels for estimated mv 4 macroblocks ahead
00615      * optimized for 64byte cache lines */
00616     const int shift = s->quarter_sample ? 2 : 1;
00617     const int mx= (s->mv[dir][0][0]>>shift) + 16*s->mb_x + 8;
00618     const int my= (s->mv[dir][0][1]>>shift) + 16*s->mb_y;
00619     int off= mx + (my + (s->mb_x&3)*4)*s->linesize + 64;
00620     s->dsp.prefetch(pix[0]+off, s->linesize, 4);
00621     off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
00622     s->dsp.prefetch(pix[1]+off, pix[2]-pix[1], 2);
00623 }
00624 
00637 static av_always_inline void MPV_motion_internal(MpegEncContext *s,
00638                               uint8_t *dest_y, uint8_t *dest_cb,
00639                               uint8_t *dest_cr, int dir,
00640                               uint8_t **ref_picture,
00641                               op_pixels_func (*pix_op)[4],
00642                               qpel_mc_func (*qpix_op)[16], int is_mpeg12)
00643 {
00644     int dxy, mx, my, src_x, src_y, motion_x, motion_y;
00645     int mb_x, mb_y, i;
00646     uint8_t *ptr, *dest;
00647 
00648     mb_x = s->mb_x;
00649     mb_y = s->mb_y;
00650 
00651     prefetch_motion(s, ref_picture, dir);
00652 
00653     if(!is_mpeg12 && s->obmc && s->pict_type != AV_PICTURE_TYPE_B){
00654         int16_t mv_cache[4][4][2];
00655         const int xy= s->mb_x + s->mb_y*s->mb_stride;
00656         const int mot_stride= s->b8_stride;
00657         const int mot_xy= mb_x*2 + mb_y*2*mot_stride;
00658 
00659         assert(!s->mb_skipped);
00660 
00661         memcpy(mv_cache[1][1], s->current_picture.f.motion_val[0][mot_xy             ], sizeof(int16_t) * 4);
00662         memcpy(mv_cache[2][1], s->current_picture.f.motion_val[0][mot_xy + mot_stride], sizeof(int16_t) * 4);
00663         memcpy(mv_cache[3][1], s->current_picture.f.motion_val[0][mot_xy + mot_stride], sizeof(int16_t) * 4);
00664 
00665         if (mb_y == 0 || IS_INTRA(s->current_picture.f.mb_type[xy - s->mb_stride])) {
00666             memcpy(mv_cache[0][1], mv_cache[1][1], sizeof(int16_t)*4);
00667         }else{
00668             memcpy(mv_cache[0][1], s->current_picture.f.motion_val[0][mot_xy - mot_stride], sizeof(int16_t) * 4);
00669         }
00670 
00671         if (mb_x == 0 || IS_INTRA(s->current_picture.f.mb_type[xy - 1])) {
00672             AV_COPY32(mv_cache[1][0], mv_cache[1][1]);
00673             AV_COPY32(mv_cache[2][0], mv_cache[2][1]);
00674         }else{
00675             AV_COPY32(mv_cache[1][0], s->current_picture.f.motion_val[0][mot_xy - 1]);
00676             AV_COPY32(mv_cache[2][0], s->current_picture.f.motion_val[0][mot_xy - 1 + mot_stride]);
00677         }
00678 
00679         if (mb_x + 1 >= s->mb_width || IS_INTRA(s->current_picture.f.mb_type[xy + 1])) {
00680             AV_COPY32(mv_cache[1][3], mv_cache[1][2]);
00681             AV_COPY32(mv_cache[2][3], mv_cache[2][2]);
00682         }else{
00683             AV_COPY32(mv_cache[1][3], s->current_picture.f.motion_val[0][mot_xy + 2]);
00684             AV_COPY32(mv_cache[2][3], s->current_picture.f.motion_val[0][mot_xy + 2 + mot_stride]);
00685         }
00686 
00687         mx = 0;
00688         my = 0;
00689         for(i=0;i<4;i++) {
00690             const int x= (i&1)+1;
00691             const int y= (i>>1)+1;
00692             int16_t mv[5][2]= {
00693                 {mv_cache[y][x  ][0], mv_cache[y][x  ][1]},
00694                 {mv_cache[y-1][x][0], mv_cache[y-1][x][1]},
00695                 {mv_cache[y][x-1][0], mv_cache[y][x-1][1]},
00696                 {mv_cache[y][x+1][0], mv_cache[y][x+1][1]},
00697                 {mv_cache[y+1][x][0], mv_cache[y+1][x][1]}};
00698             //FIXME cleanup
00699             obmc_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
00700                         ref_picture[0],
00701                         mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >>1) * 8,
00702                         pix_op[1],
00703                         mv);
00704 
00705             mx += mv[0][0];
00706             my += mv[0][1];
00707         }
00708         if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY))
00709             chroma_4mv_motion(s, dest_cb, dest_cr, ref_picture, pix_op[1], mx, my);
00710 
00711         return;
00712     }
00713 
00714     switch(s->mv_type) {
00715     case MV_TYPE_16X16:
00716         if(s->mcsel){
00717             if(s->real_sprite_warping_points==1){
00718                 gmc1_motion(s, dest_y, dest_cb, dest_cr,
00719                             ref_picture);
00720             }else{
00721                 gmc_motion(s, dest_y, dest_cb, dest_cr,
00722                             ref_picture);
00723             }
00724         }else if(!is_mpeg12 && s->quarter_sample){
00725             qpel_motion(s, dest_y, dest_cb, dest_cr,
00726                         0, 0, 0,
00727                         ref_picture, pix_op, qpix_op,
00728                         s->mv[dir][0][0], s->mv[dir][0][1], 16);
00729         } else if (!is_mpeg12 && (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) &&
00730                    s->mspel && s->codec_id == CODEC_ID_WMV2) {
00731             ff_mspel_motion(s, dest_y, dest_cb, dest_cr,
00732                         ref_picture, pix_op,
00733                         s->mv[dir][0][0], s->mv[dir][0][1], 16);
00734         }else
00735         {
00736             mpeg_motion(s, dest_y, dest_cb, dest_cr,
00737                         0, 0, 0,
00738                         ref_picture, pix_op,
00739                         s->mv[dir][0][0], s->mv[dir][0][1], 16, mb_y);
00740         }
00741         break;
00742     case MV_TYPE_8X8:
00743     if (!is_mpeg12) {
00744         mx = 0;
00745         my = 0;
00746         if(s->quarter_sample){
00747             for(i=0;i<4;i++) {
00748                 motion_x = s->mv[dir][i][0];
00749                 motion_y = s->mv[dir][i][1];
00750 
00751                 dxy = ((motion_y & 3) << 2) | (motion_x & 3);
00752                 src_x = mb_x * 16 + (motion_x >> 2) + (i & 1) * 8;
00753                 src_y = mb_y * 16 + (motion_y >> 2) + (i >>1) * 8;
00754 
00755                 /* WARNING: do no forget half pels */
00756                 src_x = av_clip(src_x, -16, s->width);
00757                 if (src_x == s->width)
00758                     dxy &= ~3;
00759                 src_y = av_clip(src_y, -16, s->height);
00760                 if (src_y == s->height)
00761                     dxy &= ~12;
00762 
00763                 ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
00764                 if(s->flags&CODEC_FLAG_EMU_EDGE){
00765                     if(   (unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x&3) - 8, 0)
00766                        || (unsigned)src_y > FFMAX(s->v_edge_pos - (motion_y&3) - 8, 0)){
00767                         s->dsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
00768                                             s->linesize, 9, 9,
00769                                             src_x, src_y,
00770                                             s->h_edge_pos, s->v_edge_pos);
00771                         ptr= s->edge_emu_buffer;
00772                     }
00773                 }
00774                 dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
00775                 qpix_op[1][dxy](dest, ptr, s->linesize);
00776 
00777                 mx += s->mv[dir][i][0]/2;
00778                 my += s->mv[dir][i][1]/2;
00779             }
00780         }else{
00781             for(i=0;i<4;i++) {
00782                 hpel_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
00783                             ref_picture[0], 0, 0,
00784                             mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >>1) * 8,
00785                             s->width, s->height, s->linesize,
00786                             s->h_edge_pos, s->v_edge_pos,
00787                             8, 8, pix_op[1],
00788                             s->mv[dir][i][0], s->mv[dir][i][1]);
00789 
00790                 mx += s->mv[dir][i][0];
00791                 my += s->mv[dir][i][1];
00792             }
00793         }
00794 
00795         if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY))
00796             chroma_4mv_motion(s, dest_cb, dest_cr, ref_picture, pix_op[1], mx, my);
00797     }
00798         break;
00799     case MV_TYPE_FIELD:
00800         if (s->picture_structure == PICT_FRAME) {
00801             if(!is_mpeg12 && s->quarter_sample){
00802                 for(i=0; i<2; i++){
00803                     qpel_motion(s, dest_y, dest_cb, dest_cr,
00804                                 1, i, s->field_select[dir][i],
00805                                 ref_picture, pix_op, qpix_op,
00806                                 s->mv[dir][i][0], s->mv[dir][i][1], 8);
00807                 }
00808             }else{
00809                 /* top field */
00810                 mpeg_motion(s, dest_y, dest_cb, dest_cr,
00811                             1, 0, s->field_select[dir][0],
00812                             ref_picture, pix_op,
00813                             s->mv[dir][0][0], s->mv[dir][0][1], 8, mb_y);
00814                 /* bottom field */
00815                 mpeg_motion(s, dest_y, dest_cb, dest_cr,
00816                             1, 1, s->field_select[dir][1],
00817                             ref_picture, pix_op,
00818                             s->mv[dir][1][0], s->mv[dir][1][1], 8, mb_y);
00819             }
00820         } else {
00821             if(s->picture_structure != s->field_select[dir][0] + 1 && s->pict_type != AV_PICTURE_TYPE_B && !s->first_field){
00822                 ref_picture = s->current_picture_ptr->f.data;
00823             }
00824 
00825             mpeg_motion(s, dest_y, dest_cb, dest_cr,
00826                         0, 0, s->field_select[dir][0],
00827                         ref_picture, pix_op,
00828                         s->mv[dir][0][0], s->mv[dir][0][1], 16, mb_y>>1);
00829         }
00830         break;
00831     case MV_TYPE_16X8:
00832         for(i=0; i<2; i++){
00833             uint8_t ** ref2picture;
00834 
00835             if(s->picture_structure == s->field_select[dir][i] + 1
00836                || s->pict_type == AV_PICTURE_TYPE_B || s->first_field){
00837                 ref2picture= ref_picture;
00838             }else{
00839                 ref2picture = s->current_picture_ptr->f.data;
00840             }
00841 
00842             mpeg_motion(s, dest_y, dest_cb, dest_cr,
00843                         0, 0, s->field_select[dir][i],
00844                         ref2picture, pix_op,
00845                         s->mv[dir][i][0], s->mv[dir][i][1] + 16*i, 8, mb_y>>1);
00846 
00847             dest_y += 16*s->linesize;
00848             dest_cb+= (16>>s->chroma_y_shift)*s->uvlinesize;
00849             dest_cr+= (16>>s->chroma_y_shift)*s->uvlinesize;
00850         }
00851         break;
00852     case MV_TYPE_DMV:
00853         if(s->picture_structure == PICT_FRAME){
00854             for(i=0; i<2; i++){
00855                 int j;
00856                 for(j=0; j<2; j++){
00857                     mpeg_motion(s, dest_y, dest_cb, dest_cr,
00858                                 1, j, j^i,
00859                                 ref_picture, pix_op,
00860                                 s->mv[dir][2*i + j][0], s->mv[dir][2*i + j][1], 8, mb_y);
00861                 }
00862                 pix_op = s->dsp.avg_pixels_tab;
00863             }
00864         }else{
00865             for(i=0; i<2; i++){
00866                 mpeg_motion(s, dest_y, dest_cb, dest_cr,
00867                             0, 0, s->picture_structure != i+1,
00868                             ref_picture, pix_op,
00869                             s->mv[dir][2*i][0],s->mv[dir][2*i][1],16, mb_y>>1);
00870 
00871                 // after put we make avg of the same block
00872                 pix_op=s->dsp.avg_pixels_tab;
00873 
00874                 //opposite parity is always in the same frame if this is second field
00875                 if(!s->first_field){
00876                     ref_picture = s->current_picture_ptr->f.data;
00877                 }
00878             }
00879         }
00880     break;
00881     default: assert(0);
00882     }
00883 }
00884 
00885 static inline void MPV_motion(MpegEncContext *s,
00886                               uint8_t *dest_y, uint8_t *dest_cb,
00887                               uint8_t *dest_cr, int dir,
00888                               uint8_t **ref_picture,
00889                               op_pixels_func (*pix_op)[4],
00890                               qpel_mc_func (*qpix_op)[16])
00891 {
00892 #if !CONFIG_SMALL
00893     if(s->out_format == FMT_MPEG1)
00894         MPV_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
00895                             ref_picture, pix_op, qpix_op, 1);
00896     else
00897 #endif
00898         MPV_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
00899                             ref_picture, pix_op, qpix_op, 0);
00900 }
00901 #endif /* AVCODEC_MPEGVIDEO_COMMON_H */