2 * XVideo Motion Compensation
3 * Copyright (c) 2003 Ivan Kalvachev
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 #include "mpegvideo.h"
34 //X11 includes are in the xvmc_render.h
35 //by replacing it with none-X one
36 //XvMC emulation could be performed
38 #include "xvmc_render.h"
40 //#include "xvmc_debug.h"
43 void XVMC_init_block(MpegEncContext *s){
44 xvmc_render_state_t * render;
45 render = (xvmc_render_state_t*)s->current_picture.data[2];
46 assert(render != NULL);
47 if( (render == NULL) || (render->magic != MP_XVMC_RENDER_MAGIC) ){
49 return;//make sure that this is render packet
51 s->block =(DCTELEM *)(render->data_blocks+(render->next_free_data_block_num)*64);
54 void XVMC_pack_pblocks(MpegEncContext *s, int cbp){
56 const int mb_block_count = 4+(1<<s->chroma_format);
59 cbp<<= 12-mb_block_count;
60 for(i=0; i<mb_block_count; i++){
62 s->pblocks[i] = (short *)(&s->block[(j++)]);
67 // printf("s->pblocks[%d]=%p ,s->block=%p cbp=%d\n",i,s->pblocks[i],s->block,cbp);
71 //these functions should be called on every new field or/and frame
72 //They should be safe if they are called few times for same field!
73 int XVMC_field_start(MpegEncContext*s, AVCodecContext *avctx){
74 xvmc_render_state_t * render,* last, * next;
76 assert(avctx != NULL);
78 render = (xvmc_render_state_t*)s->current_picture.data[2];
79 assert(render != NULL);
80 if( (render == NULL) || (render->magic != MP_XVMC_RENDER_MAGIC) )
81 return -1;//make sure that this is render packet
83 render->picture_structure = s->picture_structure;
84 render->flags = (s->first_field)? 0: XVMC_SECOND_FIELD;
86 //make sure that all data is drawn by XVMC_end_frame
87 assert(render->filled_mv_blocks_num==0);
89 render->p_future_surface = NULL;
90 render->p_past_surface = NULL;
94 return 0;// no prediction from other frames
96 next = (xvmc_render_state_t*)s->next_picture.data[2];
98 assert(next->state & MP_XVMC_STATE_PREDICTION);
99 if(next == NULL) return -1;
100 if(next->magic != MP_XVMC_RENDER_MAGIC) return -1;
101 render->p_future_surface = next->p_surface;
102 //no return here, going to set forward prediction
104 last = (xvmc_render_state_t*)s->last_picture.data[2];
105 if(last == NULL)// && !s->first_field)
106 last = render;//predict second field from the first
107 if(last->magic != MP_XVMC_RENDER_MAGIC) return -1;
108 assert(last->state & MP_XVMC_STATE_PREDICTION);
109 render->p_past_surface = last->p_surface;
116 void XVMC_field_end(MpegEncContext *s){
117 xvmc_render_state_t * render;
118 render = (xvmc_render_state_t*)s->current_picture.data[2];
119 assert(render != NULL);
121 if(render->filled_mv_blocks_num > 0){
122 // printf("xvmcvideo.c: rendering %d left blocks after last slice!!!\n",render->filled_mv_blocks_num );
123 ff_draw_horiz_band(s,0,0);
127 void XVMC_decode_mb(MpegEncContext *s){
128 XvMCMacroBlock * mv_block;
129 xvmc_render_state_t * render;
130 int i,cbp,blocks_per_mb;
132 const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
136 av_log(s->avctx, AV_LOG_ERROR, "XVMC doesn't support encoding!!!\n");
140 //from MPV_decode_mb(),
141 /* update DC predictors for P macroblocks */
145 s->last_dc[2] = 128 << s->intra_dc_precision;
148 //MC doesn't skip blocks
152 // do I need to export quant when I could not perform postprocessing?
153 // anyway, it doesn't hurrt
154 s->current_picture.qscale_table[mb_xy] = s->qscale;
156 //START OF XVMC specific code
157 render = (xvmc_render_state_t*)s->current_picture.data[2];
158 assert(render!=NULL);
159 assert(render->magic==MP_XVMC_RENDER_MAGIC);
160 assert(render->mv_blocks);
162 //take the next free macroblock
163 mv_block = &render->mv_blocks[render->start_mv_blocks_num +
164 render->filled_mv_blocks_num ];
166 // memset(mv_block,0,sizeof(XvMCMacroBlock));
168 mv_block->x = s->mb_x;
169 mv_block->y = s->mb_y;
170 mv_block->dct_type = s->interlaced_dct;//XVMC_DCT_TYPE_FRAME/FIELD;
171 // mv_block->motion_type = 0; //zero to silense warnings
173 mv_block->macroblock_type = XVMC_MB_TYPE_INTRA;//no MC, all done
175 mv_block->macroblock_type = XVMC_MB_TYPE_PATTERN;
177 if(s->mv_dir & MV_DIR_FORWARD){
178 mv_block->macroblock_type|= XVMC_MB_TYPE_MOTION_FORWARD;
179 //pmv[n][dir][xy]=mv[dir][n][xy]
180 mv_block->PMV[0][0][0] = s->mv[0][0][0];
181 mv_block->PMV[0][0][1] = s->mv[0][0][1];
182 mv_block->PMV[1][0][0] = s->mv[0][1][0];
183 mv_block->PMV[1][0][1] = s->mv[0][1][1];
185 if(s->mv_dir & MV_DIR_BACKWARD){
186 mv_block->macroblock_type|=XVMC_MB_TYPE_MOTION_BACKWARD;
187 mv_block->PMV[0][1][0] = s->mv[1][0][0];
188 mv_block->PMV[0][1][1] = s->mv[1][0][1];
189 mv_block->PMV[1][1][0] = s->mv[1][1][0];
190 mv_block->PMV[1][1][1] = s->mv[1][1][1];
195 mv_block->motion_type = XVMC_PREDICTION_FRAME;
198 mv_block->motion_type = XVMC_PREDICTION_16x8;
201 mv_block->motion_type = XVMC_PREDICTION_FIELD;
202 if(s->picture_structure == PICT_FRAME){
203 mv_block->PMV[0][0][1]<<=1;
204 mv_block->PMV[1][0][1]<<=1;
205 mv_block->PMV[0][1][1]<<=1;
206 mv_block->PMV[1][1][1]<<=1;
210 mv_block->motion_type = XVMC_PREDICTION_DUAL_PRIME;
211 if(s->picture_structure == PICT_FRAME){
213 mv_block->PMV[0][0][0] = s->mv[0][0][0];//top from top
214 mv_block->PMV[0][0][1] = s->mv[0][0][1]<<1;
216 mv_block->PMV[0][1][0] = s->mv[0][0][0];//bottom from bottom
217 mv_block->PMV[0][1][1] = s->mv[0][0][1]<<1;
219 mv_block->PMV[1][0][0] = s->mv[0][2][0];//dmv00, top from bottom
220 mv_block->PMV[1][0][1] = s->mv[0][2][1]<<1;//dmv01
222 mv_block->PMV[1][1][0] = s->mv[0][3][0];//dmv10, bottom from top
223 mv_block->PMV[1][1][1] = s->mv[0][3][1]<<1;//dmv11
226 mv_block->PMV[0][1][0] = s->mv[0][2][0];//dmv00
227 mv_block->PMV[0][1][1] = s->mv[0][2][1];//dmv01
234 mv_block->motion_vertical_field_select = 0;
236 //set correct field referenses
237 if(s->mv_type == MV_TYPE_FIELD || s->mv_type == MV_TYPE_16X8){
238 if( s->field_select[0][0] ) mv_block->motion_vertical_field_select|=1;
239 if( s->field_select[1][0] ) mv_block->motion_vertical_field_select|=2;
240 if( s->field_select[0][1] ) mv_block->motion_vertical_field_select|=4;
241 if( s->field_select[1][1] ) mv_block->motion_vertical_field_select|=8;
244 //time to handle data blocks;
245 mv_block->index = render->next_free_data_block_num;
248 if( s->chroma_format >= 2){
249 blocks_per_mb = 4 + (1 << (s->chroma_format));
254 for(i=0; i<blocks_per_mb; i++) {
256 if(s->block_last_index[i] >= 0)
260 if(s->flags & CODEC_FLAG_GRAY){
261 if(s->mb_intra){//intra frames are alwasy full chroma block
262 for(i=4; i<blocks_per_mb; i++){
263 memset(s->pblocks[i],0,sizeof(short)*8*8);//so we need to clear them
264 if(!render->unsigned_intra)
265 s->pblocks[i][0] = 1<<10;
268 cbp&= 0xf << (blocks_per_mb - 4);
269 blocks_per_mb = 4;//Luminance blocks only
272 mv_block->coded_block_pattern = cbp;
274 mv_block->macroblock_type &= ~XVMC_MB_TYPE_PATTERN;
276 for(i=0; i<blocks_per_mb; i++){
277 if(s->block_last_index[i] >= 0){
278 // i do not have unsigned_intra MOCO to test, hope it is OK
279 if( (s->mb_intra) && ( render->idct || (!render->idct && !render->unsigned_intra)) )
280 s->pblocks[i][0]-=1<<10;
282 s->dsp.idct(s->pblocks[i]);
285 //copy blocks only if the codec doesn't support pblocks reordering
286 if(s->avctx->xvmc_acceleration == 1){
287 memcpy(&render->data_blocks[(render->next_free_data_block_num)*64],
288 s->pblocks[i],sizeof(short)*8*8);
290 /* if(s->pblocks[i] != &render->data_blocks[
291 (render->next_free_data_block_num)*64]){
292 printf("ERROR mb(%d,%d) s->pblocks[i]=%p data_block[]=%p\n",
293 s->mb_x,s->mb_y, s->pblocks[i],
294 &render->data_blocks[(render->next_free_data_block_num)*64]);
297 render->next_free_data_block_num++;
300 render->filled_mv_blocks_num++;
302 assert(render->filled_mv_blocks_num <= render->total_number_of_mv_blocks);
303 assert(render->next_free_data_block_num <= render->total_number_of_data_blocks);
306 if(render->filled_mv_blocks_num >= render->total_number_of_mv_blocks)
307 ff_draw_horiz_band(s,0,0);
309 // DumpRenderInfo(render);
310 // DumpMBlockInfo(mv_block);