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   1 /*
   2  * XVideo Motion Compensation
   3  * Copyright (c) 2003 Ivan Kalvachev
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19
  20 #include <limits.h>
  21
  22 //avcodec include
  23 #include "avcodec.h"
  24 #include "dsputil.h"
  25 #include "mpegvideo.h"
  26
  27 #undef NDEBUG
  28 #include <assert.h>
  29
  30 #ifdef USE_FASTMEMCPY
  31 #include "fastmemcpy.h"
  32 #endif
  33
  34 #ifdef HAVE_XVMC
  35
  36 //X11 includes are in the xvmc_render.h
  37 //by replacing it with none-X one
  38 //XvMC emulation could be performed
  39
  40 #include "xvmc_render.h"
  41
  42 //#include "xvmc_debug.h"
  43
  44 //set s->block
  45 inline void XVMC_init_block(MpegEncContext *s){
  46 xvmc_render_state_t * render;
  47     render = (xvmc_render_state_t*)s->current_picture.data[2];
  48     assert(render != NULL);
  49     if( (render == NULL) || (render->magic != MP_XVMC_RENDER_MAGIC) ){
  50         assert(0);
  51         return;//make sure that this is render packet
  52     }
  53     s->block =(DCTELEM *)(render->data_blocks+(render->next_free_data_block_num)*64);
  54 }
  55
  56 void XVMC_pack_pblocks(MpegEncContext *s, int cbp){
  57 int i,j;
  58 const int mb_block_count = 4+(1<<s->chroma_format);
  59
  60     j=0;
  61     cbp<<= 12-mb_block_count;
  62     for(i=0; i<mb_block_count; i++){
  63         if(cbp & (1<<11)) {
  64            s->pblocks[i] = (short *)(&s->block[(j++)]);
  65         }else{
  66            s->pblocks[i] = NULL;
  67         }
  68         cbp+=cbp;
  69 //        printf("s->pblocks[%d]=%p ,s->block=%p cbp=%d\n",i,s->pblocks[i],s->block,cbp);
  70     }
  71 }
  72
  73 //these functions should be called on every new field or/and frame
  74 //They should be safe if they are called few times for same field!
  75 int XVMC_field_start(MpegEncContext*s, AVCodecContext *avctx){
  76 xvmc_render_state_t * render,* last, * next;
  77
  78     assert(avctx != NULL);
  79
  80     render = (xvmc_render_state_t*)s->current_picture.data[2];
  81     assert(render != NULL);
  82     if( (render == NULL) || (render->magic != MP_XVMC_RENDER_MAGIC) )
  83         return -1;//make sure that this is render packet
  84
  85     render->picture_structure = s->picture_structure;
  86     render->flags = (s->first_field)? 0: XVMC_SECOND_FIELD;
  87
  88 //make sure that all data is drawn by XVMC_end_frame
  89     assert(render->filled_mv_blocks_num==0);
  90
  91     render->p_future_surface = NULL;
  92     render->p_past_surface = NULL;
  93
  94     switch(s->pict_type){
  95         case  I_TYPE:
  96             return 0;// no prediction from other frames
  97         case  B_TYPE:
  98             next = (xvmc_render_state_t*)s->next_picture.data[2];
  99             assert(next!=NULL);
 100             assert(next->state & MP_XVMC_STATE_PREDICTION);
 101             if(next == NULL) return -1;
 102             if(next->magic != MP_XVMC_RENDER_MAGIC) return -1;
 103             render->p_future_surface = next->p_surface;
 104             //no return here, going to set forward prediction
 105         case  P_TYPE:
 106             last = (xvmc_render_state_t*)s->last_picture.data[2];
 107             if(last == NULL)// && !s->first_field)
 108                 last = render;//predict second field from the first
 109             if(last->magic != MP_XVMC_RENDER_MAGIC) return -1;
 110             assert(last->state & MP_XVMC_STATE_PREDICTION);
 111             render->p_past_surface = last->p_surface;
 112             return 0;
 113     }
 114
 115 return -1;
 116 }
 117
 118 void XVMC_field_end(MpegEncContext *s){
 119 xvmc_render_state_t * render;
 120     render = (xvmc_render_state_t*)s->current_picture.data[2];
 121     assert(render != NULL);
 122
 123     if(render->filled_mv_blocks_num > 0){
 124 //        printf("xvmcvideo.c: rendering %d left blocks after last slice!!!\n",render->filled_mv_blocks_num );
 125         ff_draw_horiz_band(s,0,0);
 126     }
 127 }
 128
 129 void XVMC_decode_mb(MpegEncContext *s){
 130 XvMCMacroBlock * mv_block;
 131 xvmc_render_state_t * render;
 132 int i,cbp,blocks_per_mb;
 133
 134 const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
 135
 136
 137     if(s->encoding){
 138         av_log(s->avctx, AV_LOG_ERROR, "XVMC doesn't support encoding!!!\n");
 139         return -1;
 140     }
 141
 142    //from MPV_decode_mb(),
 143     /* update DC predictors for P macroblocks */
 144     if (!s->mb_intra) {
 145         s->last_dc[0] =
 146         s->last_dc[1] =
 147         s->last_dc[2] =  128 << s->intra_dc_precision;
 148     }
 149
 150    //MC doesn't skip blocks
 151     s->mb_skipped = 0;
 152
 153
 154    // do I need to export quant when I could not perform postprocessing?
 155    // anyway, it doesn't hurrt
 156     s->current_picture.qscale_table[mb_xy] = s->qscale;
 157
 158 //START OF XVMC specific code
 159     render = (xvmc_render_state_t*)s->current_picture.data[2];
 160     assert(render!=NULL);
 161     assert(render->magic==MP_XVMC_RENDER_MAGIC);
 162     assert(render->mv_blocks);
 163
 164     //take the next free macroblock
 165     mv_block = &render->mv_blocks[render->start_mv_blocks_num +
 166                                    render->filled_mv_blocks_num ];
 167
 168 // memset(mv_block,0,sizeof(XvMCMacroBlock));
 169
 170     mv_block->x = s->mb_x;
 171     mv_block->y = s->mb_y;
 172     mv_block->dct_type = s->interlaced_dct;//XVMC_DCT_TYPE_FRAME/FIELD;
 173 //    mv_block->motion_type = 0;  //zero to silense warnings
 174     if(s->mb_intra){
 175         mv_block->macroblock_type = XVMC_MB_TYPE_INTRA;//no MC, all done
 176     }else{
 177         mv_block->macroblock_type = XVMC_MB_TYPE_PATTERN;
 178
 179         if(s->mv_dir & MV_DIR_FORWARD){
 180             mv_block->macroblock_type|= XVMC_MB_TYPE_MOTION_FORWARD;
 181             //pmv[n][dir][xy]=mv[dir][n][xy]
 182             mv_block->PMV[0][0][0] = s->mv[0][0][0];
 183             mv_block->PMV[0][0][1] = s->mv[0][0][1];
 184             mv_block->PMV[1][0][0] = s->mv[0][1][0];
 185             mv_block->PMV[1][0][1] = s->mv[0][1][1];
 186         }
 187         if(s->mv_dir & MV_DIR_BACKWARD){
 188             mv_block->macroblock_type|=XVMC_MB_TYPE_MOTION_BACKWARD;
 189             mv_block->PMV[0][1][0] = s->mv[1][0][0];
 190             mv_block->PMV[0][1][1] = s->mv[1][0][1];
 191             mv_block->PMV[1][1][0] = s->mv[1][1][0];
 192             mv_block->PMV[1][1][1] = s->mv[1][1][1];
 193         }
 194
 195         switch(s->mv_type){
 196             case  MV_TYPE_16X16:
 197                 mv_block->motion_type = XVMC_PREDICTION_FRAME;
 198                 break;
 199             case  MV_TYPE_16X8:
 200                 mv_block->motion_type = XVMC_PREDICTION_16x8;
 201                 break;
 202             case  MV_TYPE_FIELD:
 203                 mv_block->motion_type = XVMC_PREDICTION_FIELD;
 204                 if(s->picture_structure == PICT_FRAME){
 205                     mv_block->PMV[0][0][1]<<=1;
 206                     mv_block->PMV[1][0][1]<<=1;
 207                     mv_block->PMV[0][1][1]<<=1;
 208                     mv_block->PMV[1][1][1]<<=1;
 209                 }
 210                 break;
 211             case  MV_TYPE_DMV:
 212                 mv_block->motion_type = XVMC_PREDICTION_DUAL_PRIME;
 213                 if(s->picture_structure == PICT_FRAME){
 214
 215                     mv_block->PMV[0][0][0] = s->mv[0][0][0];//top from top
 216                     mv_block->PMV[0][0][1] = s->mv[0][0][1]<<1;
 217
 218                     mv_block->PMV[0][1][0] = s->mv[0][0][0];//bottom from bottom
 219                     mv_block->PMV[0][1][1] = s->mv[0][0][1]<<1;
 220
 221                     mv_block->PMV[1][0][0] = s->mv[0][2][0];//dmv00, top from bottom
 222                     mv_block->PMV[1][0][1] = s->mv[0][2][1]<<1;//dmv01
 223
 224                     mv_block->PMV[1][1][0] = s->mv[0][3][0];//dmv10, bottom from top
 225                     mv_block->PMV[1][1][1] = s->mv[0][3][1]<<1;//dmv11
 226
 227                 }else{
 228                     mv_block->PMV[0][1][0] = s->mv[0][2][0];//dmv00
 229                     mv_block->PMV[0][1][1] = s->mv[0][2][1];//dmv01
 230                 }
 231                 break;
 232             default:
 233                 assert(0);
 234         }
 235
 236         mv_block->motion_vertical_field_select = 0;
 237
 238 //set correct field referenses
 239         if(s->mv_type == MV_TYPE_FIELD || s->mv_type == MV_TYPE_16X8){
 240             if( s->field_select[0][0] ) mv_block->motion_vertical_field_select|=1;
 241             if( s->field_select[1][0] ) mv_block->motion_vertical_field_select|=2;
 242             if( s->field_select[0][1] ) mv_block->motion_vertical_field_select|=4;
 243             if( s->field_select[1][1] ) mv_block->motion_vertical_field_select|=8;
 244         }
 245     }//!intra
 246 //time to handle data blocks;
 247     mv_block->index = render->next_free_data_block_num;
 248
 249     blocks_per_mb = 6;
 250     if( s->chroma_format >= 2){
 251         blocks_per_mb = 4 + (1 << (s->chroma_format));
 252     }
 253
 254 //  calculate cbp
 255     cbp = 0;
 256     for(i=0; i<blocks_per_mb; i++) {
 257         cbp+= cbp;
 258         if(s->block_last_index[i] >= 0)
 259             cbp++;
 260     }
 261
 262     if(s->flags & CODEC_FLAG_GRAY){
 263         if(s->mb_intra){//intra frames are alwasy full chroma block
 264             for(i=4; i<blocks_per_mb; i++){
 265                 memset(s->pblocks[i],0,sizeof(short)*8*8);//so we need to clear them
 266                 if(!render->unsigned_intra)
 267                     s->pblocks[i][0] = 1<<10;
 268             }
 269         }else{
 270             cbp&= 0xf << (blocks_per_mb - 4);
 271             blocks_per_mb = 4;//Luminance blocks only
 272         }
 273     }
 274     mv_block->coded_block_pattern = cbp;
 275     if(cbp == 0)
 276         mv_block->macroblock_type &= ~XVMC_MB_TYPE_PATTERN;
 277
 278     for(i=0; i<blocks_per_mb; i++){
 279         if(s->block_last_index[i] >= 0){
 280             // i do not have unsigned_intra MOCO to test, hope it is OK
 281             if( (s->mb_intra) && ( render->idct || (!render->idct && !render->unsigned_intra)) )
 282                 s->pblocks[i][0]-=1<<10;
 283             if(!render->idct){
 284                 s->dsp.idct(s->pblocks[i]);
 285                 //!!TODO!clip!!!
 286             }
 287 //copy blocks only if the codec doesn't support pblocks reordering
 288             if(s->avctx->xvmc_acceleration == 1){
 289                 memcpy(&render->data_blocks[(render->next_free_data_block_num)*64],
 290                         s->pblocks[i],sizeof(short)*8*8);
 291             }else{
 292 /*              if(s->pblocks[i] != &render->data_blocks[
 293                         (render->next_free_data_block_num)*64]){
 294                    printf("ERROR mb(%d,%d) s->pblocks[i]=%p data_block[]=%p\n",
 295                    s->mb_x,s->mb_y, s->pblocks[i],
 296                    &render->data_blocks[(render->next_free_data_block_num)*64]);
 297                 }*/
 298             }
 299             render->next_free_data_block_num++;
 300         }
 301     }
 302     render->filled_mv_blocks_num++;
 303
 304     assert(render->filled_mv_blocks_num <= render->total_number_of_mv_blocks);
 305     assert(render->next_free_data_block_num <= render->total_number_of_data_blocks);
 306
 307
 308     if(render->filled_mv_blocks_num >= render->total_number_of_mv_blocks)
 309         ff_draw_horiz_band(s,0,0);
 310
 311 // DumpRenderInfo(render);
 312 // DumpMBlockInfo(mv_block);
 313
 314 }
 315
 316 #endif