2 * XVideo Motion Compensation
3 * Copyright (c) 2003 Ivan Kalvachev
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.
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.
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
25 #include "mpegvideo.h"
31 #include "fastmemcpy.h"
36 //X11 includes are in the xvmc_render.h
37 //by replacing it with none-X one
38 //XvMC emulation could be performed
40 #include "xvmc_render.h"
42 //#include "xvmc_debug.h"
44 static int calc_cbp(MpegEncContext *s, int blocknum){
46 // for I420 bit_offset=5
48 for(i=0; i<blocknum; i++) {
49 if(s->block_last_index[i] >= 0)
57 //these functions should be called on every new field or/and frame
58 //They should be safe if they are called few times for same field!
59 int XVMC_field_start(MpegEncContext*s, AVCodecContext *avctx){
60 xvmc_render_state_t * render,* last, * next;
62 assert(avctx != NULL);
64 render = (xvmc_render_state_t*)s->current_picture.data[2];
65 assert(render != NULL);
66 if( (render == NULL) || (render->magic != MP_XVMC_RENDER_MAGIC) )
67 return -1;//make sure that this is render packet
69 render->picture_structure = s->picture_structure;
70 render->flags = (s->first_field)? 0: XVMC_SECOND_FIELD;
72 //make sure that all data is drawn by XVMC_end_frame
73 assert(render->filled_mv_blocks_num==0);
75 render->p_future_surface = NULL;
76 render->p_past_surface = NULL;
80 return 0;// no prediction from other frames
82 next = (xvmc_render_state_t*)s->next_picture.data[2];
84 assert(next->state & MP_XVMC_STATE_PREDICTION);
85 if(next == NULL) return -1;
86 if(next->magic != MP_XVMC_RENDER_MAGIC) return -1;
87 render->p_future_surface = next->p_surface;
88 //no return here, going to set forward prediction
90 last = (xvmc_render_state_t*)s->last_picture.data[2];
91 if(last == NULL)// && !s->first_field)
92 last = render;//predict second field from the first
93 if(last->magic != MP_XVMC_RENDER_MAGIC) return -1;
94 assert(last->state & MP_XVMC_STATE_PREDICTION);
95 render->p_past_surface = last->p_surface;
102 void XVMC_field_end(MpegEncContext *s){
103 xvmc_render_state_t * render;
104 render = (xvmc_render_state_t*)s->current_picture.data[2];
105 assert(render != NULL);
107 if(render->filled_mv_blocks_num > 0){
108 // printf("xvmcvideo.c: rendering %d left blocks after last slice!!!\n",render->filled_mv_blocks_num );
109 ff_draw_horiz_band(s,0,0);
113 void XVMC_decode_mb(MpegEncContext *s, DCTELEM block[6][64]){
114 XvMCMacroBlock * mv_block;
115 xvmc_render_state_t * render;
116 int i,cbp,blocks_per_mb;
118 const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
122 fprintf(stderr,"XVMC doesn't support encoding!!!\n");
127 //from MPV_decode_mb(),
128 /* update DC predictors for P macroblocks */
132 s->last_dc[2] = 128 << s->intra_dc_precision;
135 //MC doesn't skip blocks
139 // do I need to export quant when I could not perform postprocessing?
140 // anyway, it doesn't hurrt
141 s->current_picture.qscale_table[mb_xy] = s->qscale;
143 //START OF XVMC specific code
144 render = (xvmc_render_state_t*)s->current_picture.data[2];
145 assert(render!=NULL);
146 assert(render->magic==MP_XVMC_RENDER_MAGIC);
147 assert(render->mv_blocks);
149 //take the next free macroblock
150 mv_block = &render->mv_blocks[render->start_mv_blocks_num +
151 render->filled_mv_blocks_num ];
153 // memset(mv_block,0,sizeof(XvMCMacroBlock));
155 mv_block->x = s->mb_x;
156 mv_block->y = s->mb_y;
157 mv_block->dct_type = s->interlaced_dct;//XVMC_DCT_TYPE_FRAME/FIELD;
158 // mv_block->motion_type = 0; //zero to silense warnings
160 mv_block->macroblock_type = XVMC_MB_TYPE_INTRA;//no MC, all done
162 mv_block->macroblock_type = XVMC_MB_TYPE_PATTERN;
164 if(s->mv_dir & MV_DIR_FORWARD){
165 mv_block->macroblock_type|= XVMC_MB_TYPE_MOTION_FORWARD;
166 //pmv[n][dir][xy]=mv[dir][n][xy]
167 mv_block->PMV[0][0][0] = s->mv[0][0][0];
168 mv_block->PMV[0][0][1] = s->mv[0][0][1];
169 mv_block->PMV[1][0][0] = s->mv[0][1][0];
170 mv_block->PMV[1][0][1] = s->mv[0][1][1];
172 if(s->mv_dir & MV_DIR_BACKWARD){
173 mv_block->macroblock_type|=XVMC_MB_TYPE_MOTION_BACKWARD;
174 mv_block->PMV[0][1][0] = s->mv[1][0][0];
175 mv_block->PMV[0][1][1] = s->mv[1][0][1];
176 mv_block->PMV[1][1][0] = s->mv[1][1][0];
177 mv_block->PMV[1][1][1] = s->mv[1][1][1];
182 mv_block->motion_type = XVMC_PREDICTION_FRAME;
185 mv_block->motion_type = XVMC_PREDICTION_16x8;
188 mv_block->motion_type = XVMC_PREDICTION_FIELD;
189 if(s->picture_structure == PICT_FRAME){
190 mv_block->PMV[0][0][1]<<=1;
191 mv_block->PMV[1][0][1]<<=1;
192 mv_block->PMV[0][1][1]<<=1;
193 mv_block->PMV[1][1][1]<<=1;
197 mv_block->motion_type = XVMC_PREDICTION_DUAL_PRIME;
198 if(s->picture_structure == PICT_FRAME){
200 mv_block->PMV[0][0][0] = s->mv[0][0][0];//top from top
201 mv_block->PMV[0][0][1] = s->mv[0][0][1]<<1;
203 mv_block->PMV[0][1][0] = s->mv[0][0][0];//bottom from bottom
204 mv_block->PMV[0][1][1] = s->mv[0][0][1]<<1;
206 mv_block->PMV[1][0][0] = s->mv[0][2][0];//dmv00, top from bottom
207 mv_block->PMV[1][0][1] = s->mv[0][2][1]<<1;//dmv01
209 mv_block->PMV[1][1][0] = s->mv[0][3][0];//dmv10, bottom from top
210 mv_block->PMV[1][1][1] = s->mv[0][3][1]<<1;//dmv11
213 mv_block->PMV[0][1][0] = s->mv[0][2][0];//dmv00
214 mv_block->PMV[0][1][1] = s->mv[0][2][1];//dmv01
221 mv_block->motion_vertical_field_select = 0;
223 //set correct field referenses
224 if(s->mv_type == MV_TYPE_FIELD || s->mv_type == MV_TYPE_16X8){
225 if( s->field_select[0][0] ) mv_block->motion_vertical_field_select|=1;
226 if( s->field_select[1][0] ) mv_block->motion_vertical_field_select|=2;
227 if( s->field_select[0][1] ) mv_block->motion_vertical_field_select|=4;
228 if( s->field_select[1][1] ) mv_block->motion_vertical_field_select|=8;
231 //time to handle data blocks;
232 mv_block->index = render->next_free_data_block_num;
235 switch( s->chroma_format){
244 if(s->flags & CODEC_FLAG_GRAY){
245 if(s->mb_intra){//intra frames are alwasy full chroma block
246 memset(block[4],0,sizeof(short)*8*8);//so we need to clear them
247 memset(block[5],0,sizeof(short)*8*8);
248 if(!render->unsigned_intra)
249 block[4][0] = block[5][0] = 1<<10;
252 blocks_per_mb = 4;//Luminance blocks only
254 cbp = calc_cbp(s,blocks_per_mb);
255 mv_block->coded_block_pattern = cbp;
257 mv_block->macroblock_type &= ~XVMC_MB_TYPE_PATTERN;
259 for(i=0; i<blocks_per_mb; i++){
260 if(s->block_last_index[i] >= 0){
261 // i do not have unsigned_intra MOCO to test, hope it is OK
262 if( (s->mb_intra) && ( render->idct || (!render->idct && !render->unsigned_intra)) )
265 s->dsp.idct(block[i]);
268 //TODO:avoid block copy by modifying s->block pointer
269 memcpy(&render->data_blocks[(render->next_free_data_block_num++)*64],
270 block[i],sizeof(short)*8*8);
273 render->filled_mv_blocks_num++;
275 assert(render->filled_mv_blocks_num <= render->total_number_of_mv_blocks);
276 assert(render->next_free_data_block_num <= render->total_number_of_data_blocks);
279 if(render->filled_mv_blocks_num >= render->total_number_of_mv_blocks)
280 ff_draw_horiz_band(s,0,0);
282 // DumpRenderInfo(render);
283 // DumpMBlockInfo(mv_block);