2 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
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
24 * H.264 / AVC / MPEG4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
30 #include "mpegvideo.h"
33 #include "h264_parser.h"
35 #include "rectangle.h"
39 #include "i386/h264_i386.h"
46 * Value of Picture.reference when Picture is not a reference picture, but
47 * is held for delayed output.
49 #define DELAYED_PIC_REF 4
51 static VLC coeff_token_vlc[4];
52 static VLC_TYPE coeff_token_vlc_tables[520+332+280+256][2];
53 static const int coeff_token_vlc_tables_size[4]={520,332,280,256};
55 static VLC chroma_dc_coeff_token_vlc;
56 static VLC_TYPE chroma_dc_coeff_token_vlc_table[256][2];
57 static const int chroma_dc_coeff_token_vlc_table_size = 256;
59 static VLC total_zeros_vlc[15];
60 static VLC_TYPE total_zeros_vlc_tables[15][512][2];
61 static const int total_zeros_vlc_tables_size = 512;
63 static VLC chroma_dc_total_zeros_vlc[3];
64 static VLC_TYPE chroma_dc_total_zeros_vlc_tables[3][8][2];
65 static const int chroma_dc_total_zeros_vlc_tables_size = 8;
67 static VLC run_vlc[6];
68 static VLC_TYPE run_vlc_tables[6][8][2];
69 static const int run_vlc_tables_size = 8;
72 static VLC_TYPE run7_vlc_table[96][2];
73 static const int run7_vlc_table_size = 96;
75 static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp);
76 static void svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc);
77 static void filter_mb( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize);
78 static void filter_mb_fast( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize);
79 static Picture * remove_long(H264Context *h, int i, int ref_mask);
81 static av_always_inline uint32_t pack16to32(int a, int b){
82 #ifdef WORDS_BIGENDIAN
83 return (b&0xFFFF) + (a<<16);
85 return (a&0xFFFF) + (b<<16);
89 const uint8_t ff_rem6[52]={
90 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3,
93 const uint8_t ff_div6[52]={
94 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
97 static const int left_block_options[4][8]={
104 static void fill_caches(H264Context *h, int mb_type, int for_deblock){
105 MpegEncContext * const s = &h->s;
106 const int mb_xy= h->mb_xy;
107 int topleft_xy, top_xy, topright_xy, left_xy[2];
108 int topleft_type, top_type, topright_type, left_type[2];
110 int topleft_partition= -1;
113 top_xy = mb_xy - (s->mb_stride << FIELD_PICTURE);
115 //FIXME deblocking could skip the intra and nnz parts.
116 if(for_deblock && (h->slice_num == 1 || h->slice_table[mb_xy] == h->slice_table[top_xy]) && !FRAME_MBAFF)
119 /* Wow, what a mess, why didn't they simplify the interlacing & intra
120 * stuff, I can't imagine that these complex rules are worth it. */
122 topleft_xy = top_xy - 1;
123 topright_xy= top_xy + 1;
124 left_xy[1] = left_xy[0] = mb_xy-1;
125 left_block = left_block_options[0];
127 const int pair_xy = s->mb_x + (s->mb_y & ~1)*s->mb_stride;
128 const int top_pair_xy = pair_xy - s->mb_stride;
129 const int topleft_pair_xy = top_pair_xy - 1;
130 const int topright_pair_xy = top_pair_xy + 1;
131 const int topleft_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[topleft_pair_xy]);
132 const int top_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[top_pair_xy]);
133 const int topright_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[topright_pair_xy]);
134 const int left_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[pair_xy-1]);
135 const int curr_mb_frame_flag = !IS_INTERLACED(mb_type);
136 const int bottom = (s->mb_y & 1);
137 tprintf(s->avctx, "fill_caches: curr_mb_frame_flag:%d, left_mb_frame_flag:%d, topleft_mb_frame_flag:%d, top_mb_frame_flag:%d, topright_mb_frame_flag:%d\n", curr_mb_frame_flag, left_mb_frame_flag, topleft_mb_frame_flag, top_mb_frame_flag, topright_mb_frame_flag);
139 ? !curr_mb_frame_flag // bottom macroblock
140 : (!curr_mb_frame_flag && !top_mb_frame_flag) // top macroblock
142 top_xy -= s->mb_stride;
145 ? !curr_mb_frame_flag // bottom macroblock
146 : (!curr_mb_frame_flag && !topleft_mb_frame_flag) // top macroblock
148 topleft_xy -= s->mb_stride;
149 } else if(bottom && curr_mb_frame_flag && !left_mb_frame_flag) {
150 topleft_xy += s->mb_stride;
151 // take top left mv from the middle of the mb, as opposed to all other modes which use the bottom right partition
152 topleft_partition = 0;
155 ? !curr_mb_frame_flag // bottom macroblock
156 : (!curr_mb_frame_flag && !topright_mb_frame_flag) // top macroblock
158 topright_xy -= s->mb_stride;
160 if (left_mb_frame_flag != curr_mb_frame_flag) {
161 left_xy[1] = left_xy[0] = pair_xy - 1;
162 if (curr_mb_frame_flag) {
164 left_block = left_block_options[1];
166 left_block= left_block_options[2];
169 left_xy[1] += s->mb_stride;
170 left_block = left_block_options[3];
175 h->top_mb_xy = top_xy;
176 h->left_mb_xy[0] = left_xy[0];
177 h->left_mb_xy[1] = left_xy[1];
181 top_type = h->slice_table[top_xy ] < 255 ? s->current_picture.mb_type[top_xy] : 0;
182 left_type[0] = h->slice_table[left_xy[0] ] < 255 ? s->current_picture.mb_type[left_xy[0]] : 0;
183 left_type[1] = h->slice_table[left_xy[1] ] < 255 ? s->current_picture.mb_type[left_xy[1]] : 0;
185 if(FRAME_MBAFF && !IS_INTRA(mb_type)){
187 int v = *(uint16_t*)&h->non_zero_count[mb_xy][14];
189 h->non_zero_count_cache[scan8[i]] = (v>>i)&1;
190 for(list=0; list<h->list_count; list++){
191 if(USES_LIST(mb_type,list)){
192 uint32_t *src = (uint32_t*)s->current_picture.motion_val[list][h->mb2b_xy[mb_xy]];
193 uint32_t *dst = (uint32_t*)h->mv_cache[list][scan8[0]];
194 int8_t *ref = &s->current_picture.ref_index[list][h->mb2b8_xy[mb_xy]];
195 for(i=0; i<4; i++, dst+=8, src+=h->b_stride){
201 *(uint32_t*)&h->ref_cache[list][scan8[ 0]] =
202 *(uint32_t*)&h->ref_cache[list][scan8[ 2]] = pack16to32(ref[0],ref[1])*0x0101;
204 *(uint32_t*)&h->ref_cache[list][scan8[ 8]] =
205 *(uint32_t*)&h->ref_cache[list][scan8[10]] = pack16to32(ref[0],ref[1])*0x0101;
207 fill_rectangle(&h-> mv_cache[list][scan8[ 0]], 4, 4, 8, 0, 4);
208 fill_rectangle(&h->ref_cache[list][scan8[ 0]], 4, 4, 8, (uint8_t)LIST_NOT_USED, 1);
213 topleft_type = h->slice_table[topleft_xy ] == h->slice_num ? s->current_picture.mb_type[topleft_xy] : 0;
214 top_type = h->slice_table[top_xy ] == h->slice_num ? s->current_picture.mb_type[top_xy] : 0;
215 topright_type= h->slice_table[topright_xy] == h->slice_num ? s->current_picture.mb_type[topright_xy]: 0;
216 left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0;
217 left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0;
220 if(IS_INTRA(mb_type)){
221 h->topleft_samples_available=
222 h->top_samples_available=
223 h->left_samples_available= 0xFFFF;
224 h->topright_samples_available= 0xEEEA;
226 if(!IS_INTRA(top_type) && (top_type==0 || h->pps.constrained_intra_pred)){
227 h->topleft_samples_available= 0xB3FF;
228 h->top_samples_available= 0x33FF;
229 h->topright_samples_available= 0x26EA;
232 if(!IS_INTRA(left_type[i]) && (left_type[i]==0 || h->pps.constrained_intra_pred)){
233 h->topleft_samples_available&= 0xDF5F;
234 h->left_samples_available&= 0x5F5F;
238 if(!IS_INTRA(topleft_type) && (topleft_type==0 || h->pps.constrained_intra_pred))
239 h->topleft_samples_available&= 0x7FFF;
241 if(!IS_INTRA(topright_type) && (topright_type==0 || h->pps.constrained_intra_pred))
242 h->topright_samples_available&= 0xFBFF;
244 if(IS_INTRA4x4(mb_type)){
245 if(IS_INTRA4x4(top_type)){
246 h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode[top_xy][4];
247 h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode[top_xy][5];
248 h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode[top_xy][6];
249 h->intra4x4_pred_mode_cache[7+8*0]= h->intra4x4_pred_mode[top_xy][3];
252 if(!top_type || (IS_INTER(top_type) && h->pps.constrained_intra_pred))
257 h->intra4x4_pred_mode_cache[4+8*0]=
258 h->intra4x4_pred_mode_cache[5+8*0]=
259 h->intra4x4_pred_mode_cache[6+8*0]=
260 h->intra4x4_pred_mode_cache[7+8*0]= pred;
263 if(IS_INTRA4x4(left_type[i])){
264 h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[0+2*i]];
265 h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[1+2*i]];
268 if(!left_type[i] || (IS_INTER(left_type[i]) && h->pps.constrained_intra_pred))
273 h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
274 h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred;
289 //FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
291 h->non_zero_count_cache[4+8*0]= h->non_zero_count[top_xy][4];
292 h->non_zero_count_cache[5+8*0]= h->non_zero_count[top_xy][5];
293 h->non_zero_count_cache[6+8*0]= h->non_zero_count[top_xy][6];
294 h->non_zero_count_cache[7+8*0]= h->non_zero_count[top_xy][3];
296 h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][9];
297 h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][8];
299 h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][12];
300 h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][11];
303 h->non_zero_count_cache[4+8*0]=
304 h->non_zero_count_cache[5+8*0]=
305 h->non_zero_count_cache[6+8*0]=
306 h->non_zero_count_cache[7+8*0]=
308 h->non_zero_count_cache[1+8*0]=
309 h->non_zero_count_cache[2+8*0]=
311 h->non_zero_count_cache[1+8*3]=
312 h->non_zero_count_cache[2+8*3]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
316 for (i=0; i<2; i++) {
318 h->non_zero_count_cache[3+8*1 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[0+2*i]];
319 h->non_zero_count_cache[3+8*2 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[1+2*i]];
320 h->non_zero_count_cache[0+8*1 + 8*i]= h->non_zero_count[left_xy[i]][left_block[4+2*i]];
321 h->non_zero_count_cache[0+8*4 + 8*i]= h->non_zero_count[left_xy[i]][left_block[5+2*i]];
323 h->non_zero_count_cache[3+8*1 + 2*8*i]=
324 h->non_zero_count_cache[3+8*2 + 2*8*i]=
325 h->non_zero_count_cache[0+8*1 + 8*i]=
326 h->non_zero_count_cache[0+8*4 + 8*i]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
333 h->top_cbp = h->cbp_table[top_xy];
334 } else if(IS_INTRA(mb_type)) {
341 h->left_cbp = h->cbp_table[left_xy[0]] & 0x1f0;
342 } else if(IS_INTRA(mb_type)) {
348 h->left_cbp |= ((h->cbp_table[left_xy[0]]>>((left_block[0]&(~1))+1))&0x1) << 1;
351 h->left_cbp |= ((h->cbp_table[left_xy[1]]>>((left_block[2]&(~1))+1))&0x1) << 3;
356 if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
358 for(list=0; list<h->list_count; list++){
359 if(!USES_LIST(mb_type, list) && !IS_DIRECT(mb_type) && !h->deblocking_filter){
360 /*if(!h->mv_cache_clean[list]){
361 memset(h->mv_cache [list], 0, 8*5*2*sizeof(int16_t)); //FIXME clean only input? clean at all?
362 memset(h->ref_cache[list], PART_NOT_AVAILABLE, 8*5*sizeof(int8_t));
363 h->mv_cache_clean[list]= 1;
367 h->mv_cache_clean[list]= 0;
369 if(USES_LIST(top_type, list)){
370 const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
371 const int b8_xy= h->mb2b8_xy[top_xy] + h->b8_stride;
372 *(uint32_t*)h->mv_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 0];
373 *(uint32_t*)h->mv_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 1];
374 *(uint32_t*)h->mv_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 2];
375 *(uint32_t*)h->mv_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 3];
376 h->ref_cache[list][scan8[0] + 0 - 1*8]=
377 h->ref_cache[list][scan8[0] + 1 - 1*8]= s->current_picture.ref_index[list][b8_xy + 0];
378 h->ref_cache[list][scan8[0] + 2 - 1*8]=
379 h->ref_cache[list][scan8[0] + 3 - 1*8]= s->current_picture.ref_index[list][b8_xy + 1];
381 *(uint32_t*)h->mv_cache [list][scan8[0] + 0 - 1*8]=
382 *(uint32_t*)h->mv_cache [list][scan8[0] + 1 - 1*8]=
383 *(uint32_t*)h->mv_cache [list][scan8[0] + 2 - 1*8]=
384 *(uint32_t*)h->mv_cache [list][scan8[0] + 3 - 1*8]= 0;
385 *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101;
389 int cache_idx = scan8[0] - 1 + i*2*8;
390 if(USES_LIST(left_type[i], list)){
391 const int b_xy= h->mb2b_xy[left_xy[i]] + 3;
392 const int b8_xy= h->mb2b8_xy[left_xy[i]] + 1;
393 *(uint32_t*)h->mv_cache[list][cache_idx ]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[0+i*2]];
394 *(uint32_t*)h->mv_cache[list][cache_idx+8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[1+i*2]];
395 h->ref_cache[list][cache_idx ]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[0+i*2]>>1)];
396 h->ref_cache[list][cache_idx+8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[1+i*2]>>1)];
398 *(uint32_t*)h->mv_cache [list][cache_idx ]=
399 *(uint32_t*)h->mv_cache [list][cache_idx+8]= 0;
400 h->ref_cache[list][cache_idx ]=
401 h->ref_cache[list][cache_idx+8]= left_type[i] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
405 if((for_deblock || (IS_DIRECT(mb_type) && !h->direct_spatial_mv_pred)) && !FRAME_MBAFF)
408 if(USES_LIST(topleft_type, list)){
409 const int b_xy = h->mb2b_xy[topleft_xy] + 3 + h->b_stride + (topleft_partition & 2*h->b_stride);
410 const int b8_xy= h->mb2b8_xy[topleft_xy] + 1 + (topleft_partition & h->b8_stride);
411 *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
412 h->ref_cache[list][scan8[0] - 1 - 1*8]= s->current_picture.ref_index[list][b8_xy];
414 *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= 0;
415 h->ref_cache[list][scan8[0] - 1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
418 if(USES_LIST(topright_type, list)){
419 const int b_xy= h->mb2b_xy[topright_xy] + 3*h->b_stride;
420 const int b8_xy= h->mb2b8_xy[topright_xy] + h->b8_stride;
421 *(uint32_t*)h->mv_cache[list][scan8[0] + 4 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
422 h->ref_cache[list][scan8[0] + 4 - 1*8]= s->current_picture.ref_index[list][b8_xy];
424 *(uint32_t*)h->mv_cache [list][scan8[0] + 4 - 1*8]= 0;
425 h->ref_cache[list][scan8[0] + 4 - 1*8]= topright_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
428 if((IS_SKIP(mb_type) || IS_DIRECT(mb_type)) && !FRAME_MBAFF)
431 h->ref_cache[list][scan8[5 ]+1] =
432 h->ref_cache[list][scan8[7 ]+1] =
433 h->ref_cache[list][scan8[13]+1] = //FIXME remove past 3 (init somewhere else)
434 h->ref_cache[list][scan8[4 ]] =
435 h->ref_cache[list][scan8[12]] = PART_NOT_AVAILABLE;
436 *(uint32_t*)h->mv_cache [list][scan8[5 ]+1]=
437 *(uint32_t*)h->mv_cache [list][scan8[7 ]+1]=
438 *(uint32_t*)h->mv_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
439 *(uint32_t*)h->mv_cache [list][scan8[4 ]]=
440 *(uint32_t*)h->mv_cache [list][scan8[12]]= 0;
443 /* XXX beurk, Load mvd */
444 if(USES_LIST(top_type, list)){
445 const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
446 *(uint32_t*)h->mvd_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 0];
447 *(uint32_t*)h->mvd_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 1];
448 *(uint32_t*)h->mvd_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 2];
449 *(uint32_t*)h->mvd_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 3];
451 *(uint32_t*)h->mvd_cache [list][scan8[0] + 0 - 1*8]=
452 *(uint32_t*)h->mvd_cache [list][scan8[0] + 1 - 1*8]=
453 *(uint32_t*)h->mvd_cache [list][scan8[0] + 2 - 1*8]=
454 *(uint32_t*)h->mvd_cache [list][scan8[0] + 3 - 1*8]= 0;
456 if(USES_LIST(left_type[0], list)){
457 const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
458 *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 0*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[0]];
459 *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[1]];
461 *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 0*8]=
462 *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 1*8]= 0;
464 if(USES_LIST(left_type[1], list)){
465 const int b_xy= h->mb2b_xy[left_xy[1]] + 3;
466 *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 2*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[2]];
467 *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 3*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[3]];
469 *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 2*8]=
470 *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 3*8]= 0;
472 *(uint32_t*)h->mvd_cache [list][scan8[5 ]+1]=
473 *(uint32_t*)h->mvd_cache [list][scan8[7 ]+1]=
474 *(uint32_t*)h->mvd_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
475 *(uint32_t*)h->mvd_cache [list][scan8[4 ]]=
476 *(uint32_t*)h->mvd_cache [list][scan8[12]]= 0;
478 if(h->slice_type_nos == FF_B_TYPE){
479 fill_rectangle(&h->direct_cache[scan8[0]], 4, 4, 8, 0, 1);
481 if(IS_DIRECT(top_type)){
482 *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0x01010101;
483 }else if(IS_8X8(top_type)){
484 int b8_xy = h->mb2b8_xy[top_xy] + h->b8_stride;
485 h->direct_cache[scan8[0] + 0 - 1*8]= h->direct_table[b8_xy];
486 h->direct_cache[scan8[0] + 2 - 1*8]= h->direct_table[b8_xy + 1];
488 *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0;
491 if(IS_DIRECT(left_type[0]))
492 h->direct_cache[scan8[0] - 1 + 0*8]= 1;
493 else if(IS_8X8(left_type[0]))
494 h->direct_cache[scan8[0] - 1 + 0*8]= h->direct_table[h->mb2b8_xy[left_xy[0]] + 1 + h->b8_stride*(left_block[0]>>1)];
496 h->direct_cache[scan8[0] - 1 + 0*8]= 0;
498 if(IS_DIRECT(left_type[1]))
499 h->direct_cache[scan8[0] - 1 + 2*8]= 1;
500 else if(IS_8X8(left_type[1]))
501 h->direct_cache[scan8[0] - 1 + 2*8]= h->direct_table[h->mb2b8_xy[left_xy[1]] + 1 + h->b8_stride*(left_block[2]>>1)];
503 h->direct_cache[scan8[0] - 1 + 2*8]= 0;
509 MAP_F2F(scan8[0] - 1 - 1*8, topleft_type)\
510 MAP_F2F(scan8[0] + 0 - 1*8, top_type)\
511 MAP_F2F(scan8[0] + 1 - 1*8, top_type)\
512 MAP_F2F(scan8[0] + 2 - 1*8, top_type)\
513 MAP_F2F(scan8[0] + 3 - 1*8, top_type)\
514 MAP_F2F(scan8[0] + 4 - 1*8, topright_type)\
515 MAP_F2F(scan8[0] - 1 + 0*8, left_type[0])\
516 MAP_F2F(scan8[0] - 1 + 1*8, left_type[0])\
517 MAP_F2F(scan8[0] - 1 + 2*8, left_type[1])\
518 MAP_F2F(scan8[0] - 1 + 3*8, left_type[1])
520 #define MAP_F2F(idx, mb_type)\
521 if(!IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
522 h->ref_cache[list][idx] <<= 1;\
523 h->mv_cache[list][idx][1] /= 2;\
524 h->mvd_cache[list][idx][1] /= 2;\
529 #define MAP_F2F(idx, mb_type)\
530 if(IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
531 h->ref_cache[list][idx] >>= 1;\
532 h->mv_cache[list][idx][1] <<= 1;\
533 h->mvd_cache[list][idx][1] <<= 1;\
543 h->neighbor_transform_size= !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[0]);
546 static inline void write_back_intra_pred_mode(H264Context *h){
547 const int mb_xy= h->mb_xy;
549 h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1];
550 h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2];
551 h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3];
552 h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4];
553 h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4];
554 h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4];
555 h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4];
559 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
561 static inline int check_intra4x4_pred_mode(H264Context *h){
562 MpegEncContext * const s = &h->s;
563 static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
564 static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
567 if(!(h->top_samples_available&0x8000)){
569 int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
571 av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
574 h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
579 if(!(h->left_samples_available&0x8000)){
581 int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
583 av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
586 h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
592 } //FIXME cleanup like next
595 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
597 static inline int check_intra_pred_mode(H264Context *h, int mode){
598 MpegEncContext * const s = &h->s;
599 static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
600 static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
603 av_log(h->s.avctx, AV_LOG_ERROR, "out of range intra chroma pred mode at %d %d\n", s->mb_x, s->mb_y);
607 if(!(h->top_samples_available&0x8000)){
610 av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
615 if(!(h->left_samples_available&0x8000)){
618 av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
627 * gets the predicted intra4x4 prediction mode.
629 static inline int pred_intra_mode(H264Context *h, int n){
630 const int index8= scan8[n];
631 const int left= h->intra4x4_pred_mode_cache[index8 - 1];
632 const int top = h->intra4x4_pred_mode_cache[index8 - 8];
633 const int min= FFMIN(left, top);
635 tprintf(h->s.avctx, "mode:%d %d min:%d\n", left ,top, min);
637 if(min<0) return DC_PRED;
641 static inline void write_back_non_zero_count(H264Context *h){
642 const int mb_xy= h->mb_xy;
644 h->non_zero_count[mb_xy][0]= h->non_zero_count_cache[7+8*1];
645 h->non_zero_count[mb_xy][1]= h->non_zero_count_cache[7+8*2];
646 h->non_zero_count[mb_xy][2]= h->non_zero_count_cache[7+8*3];
647 h->non_zero_count[mb_xy][3]= h->non_zero_count_cache[7+8*4];
648 h->non_zero_count[mb_xy][4]= h->non_zero_count_cache[4+8*4];
649 h->non_zero_count[mb_xy][5]= h->non_zero_count_cache[5+8*4];
650 h->non_zero_count[mb_xy][6]= h->non_zero_count_cache[6+8*4];
652 h->non_zero_count[mb_xy][9]= h->non_zero_count_cache[1+8*2];
653 h->non_zero_count[mb_xy][8]= h->non_zero_count_cache[2+8*2];
654 h->non_zero_count[mb_xy][7]= h->non_zero_count_cache[2+8*1];
656 h->non_zero_count[mb_xy][12]=h->non_zero_count_cache[1+8*5];
657 h->non_zero_count[mb_xy][11]=h->non_zero_count_cache[2+8*5];
658 h->non_zero_count[mb_xy][10]=h->non_zero_count_cache[2+8*4];
661 // store all luma nnzs, for deblocking
664 v += (!!h->non_zero_count_cache[scan8[i]]) << i;
665 *(uint16_t*)&h->non_zero_count[mb_xy][14] = v;
670 * gets the predicted number of non-zero coefficients.
671 * @param n block index
673 static inline int pred_non_zero_count(H264Context *h, int n){
674 const int index8= scan8[n];
675 const int left= h->non_zero_count_cache[index8 - 1];
676 const int top = h->non_zero_count_cache[index8 - 8];
679 if(i<64) i= (i+1)>>1;
681 tprintf(h->s.avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
686 static inline int fetch_diagonal_mv(H264Context *h, const int16_t **C, int i, int list, int part_width){
687 const int topright_ref= h->ref_cache[list][ i - 8 + part_width ];
688 MpegEncContext *s = &h->s;
690 /* there is no consistent mapping of mvs to neighboring locations that will
691 * make mbaff happy, so we can't move all this logic to fill_caches */
693 const uint32_t *mb_types = s->current_picture_ptr->mb_type;
695 *(uint32_t*)h->mv_cache[list][scan8[0]-2] = 0;
696 *C = h->mv_cache[list][scan8[0]-2];
699 && (s->mb_y&1) && i < scan8[0]+8 && topright_ref != PART_NOT_AVAILABLE){
700 int topright_xy = s->mb_x + (s->mb_y-1)*s->mb_stride + (i == scan8[0]+3);
701 if(IS_INTERLACED(mb_types[topright_xy])){
702 #define SET_DIAG_MV(MV_OP, REF_OP, X4, Y4)\
703 const int x4 = X4, y4 = Y4;\
704 const int mb_type = mb_types[(x4>>2)+(y4>>2)*s->mb_stride];\
705 if(!USES_LIST(mb_type,list))\
706 return LIST_NOT_USED;\
707 mv = s->current_picture_ptr->motion_val[list][x4 + y4*h->b_stride];\
708 h->mv_cache[list][scan8[0]-2][0] = mv[0];\
709 h->mv_cache[list][scan8[0]-2][1] = mv[1] MV_OP;\
710 return s->current_picture_ptr->ref_index[list][(x4>>1) + (y4>>1)*h->b8_stride] REF_OP;
712 SET_DIAG_MV(*2, >>1, s->mb_x*4+(i&7)-4+part_width, s->mb_y*4-1);
715 if(topright_ref == PART_NOT_AVAILABLE
716 && ((s->mb_y&1) || i >= scan8[0]+8) && (i&7)==4
717 && h->ref_cache[list][scan8[0]-1] != PART_NOT_AVAILABLE){
719 && IS_INTERLACED(mb_types[h->left_mb_xy[0]])){
720 SET_DIAG_MV(*2, >>1, s->mb_x*4-1, (s->mb_y|1)*4+(s->mb_y&1)*2+(i>>4)-1);
723 && !IS_INTERLACED(mb_types[h->left_mb_xy[0]])
725 // left shift will turn LIST_NOT_USED into PART_NOT_AVAILABLE, but that's OK.
726 SET_DIAG_MV(/2, <<1, s->mb_x*4-1, (s->mb_y&~1)*4 - 1 + ((i-scan8[0])>>3)*2);
732 if(topright_ref != PART_NOT_AVAILABLE){
733 *C= h->mv_cache[list][ i - 8 + part_width ];
736 tprintf(s->avctx, "topright MV not available\n");
738 *C= h->mv_cache[list][ i - 8 - 1 ];
739 return h->ref_cache[list][ i - 8 - 1 ];
744 * gets the predicted MV.
745 * @param n the block index
746 * @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
747 * @param mx the x component of the predicted motion vector
748 * @param my the y component of the predicted motion vector
750 static inline void pred_motion(H264Context * const h, int n, int part_width, int list, int ref, int * const mx, int * const my){
751 const int index8= scan8[n];
752 const int top_ref= h->ref_cache[list][ index8 - 8 ];
753 const int left_ref= h->ref_cache[list][ index8 - 1 ];
754 const int16_t * const A= h->mv_cache[list][ index8 - 1 ];
755 const int16_t * const B= h->mv_cache[list][ index8 - 8 ];
757 int diagonal_ref, match_count;
759 assert(part_width==1 || part_width==2 || part_width==4);
769 diagonal_ref= fetch_diagonal_mv(h, &C, index8, list, part_width);
770 match_count= (diagonal_ref==ref) + (top_ref==ref) + (left_ref==ref);
771 tprintf(h->s.avctx, "pred_motion match_count=%d\n", match_count);
772 if(match_count > 1){ //most common
773 *mx= mid_pred(A[0], B[0], C[0]);
774 *my= mid_pred(A[1], B[1], C[1]);
775 }else if(match_count==1){
779 }else if(top_ref==ref){
787 if(top_ref == PART_NOT_AVAILABLE && diagonal_ref == PART_NOT_AVAILABLE && left_ref != PART_NOT_AVAILABLE){
791 *mx= mid_pred(A[0], B[0], C[0]);
792 *my= mid_pred(A[1], B[1], C[1]);
796 tprintf(h->s.avctx, "pred_motion (%2d %2d %2d) (%2d %2d %2d) (%2d %2d %2d) -> (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1], diagonal_ref, C[0], C[1], left_ref, A[0], A[1], ref, *mx, *my, h->s.mb_x, h->s.mb_y, n, list);
800 * gets the directionally predicted 16x8 MV.
801 * @param n the block index
802 * @param mx the x component of the predicted motion vector
803 * @param my the y component of the predicted motion vector
805 static inline void pred_16x8_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
807 const int top_ref= h->ref_cache[list][ scan8[0] - 8 ];
808 const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];
810 tprintf(h->s.avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1], h->s.mb_x, h->s.mb_y, n, list);
818 const int left_ref= h->ref_cache[list][ scan8[8] - 1 ];
819 const int16_t * const A= h->mv_cache[list][ scan8[8] - 1 ];
821 tprintf(h->s.avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list);
831 pred_motion(h, n, 4, list, ref, mx, my);
835 * gets the directionally predicted 8x16 MV.
836 * @param n the block index
837 * @param mx the x component of the predicted motion vector
838 * @param my the y component of the predicted motion vector
840 static inline void pred_8x16_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
842 const int left_ref= h->ref_cache[list][ scan8[0] - 1 ];
843 const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ];
845 tprintf(h->s.avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list);
856 diagonal_ref= fetch_diagonal_mv(h, &C, scan8[4], list, 2);
858 tprintf(h->s.avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", diagonal_ref, C[0], C[1], h->s.mb_x, h->s.mb_y, n, list);
860 if(diagonal_ref == ref){
868 pred_motion(h, n, 2, list, ref, mx, my);
871 static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my){
872 const int top_ref = h->ref_cache[0][ scan8[0] - 8 ];
873 const int left_ref= h->ref_cache[0][ scan8[0] - 1 ];
875 tprintf(h->s.avctx, "pred_pskip: (%d) (%d) at %2d %2d\n", top_ref, left_ref, h->s.mb_x, h->s.mb_y);
877 if(top_ref == PART_NOT_AVAILABLE || left_ref == PART_NOT_AVAILABLE
878 || (top_ref == 0 && *(uint32_t*)h->mv_cache[0][ scan8[0] - 8 ] == 0)
879 || (left_ref == 0 && *(uint32_t*)h->mv_cache[0][ scan8[0] - 1 ] == 0)){
885 pred_motion(h, 0, 4, 0, 0, mx, my);
890 static inline void direct_dist_scale_factor(H264Context * const h){
891 MpegEncContext * const s = &h->s;
892 const int poc = h->s.current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ];
893 const int poc1 = h->ref_list[1][0].poc;
895 for(i=0; i<h->ref_count[0]; i++){
896 int poc0 = h->ref_list[0][i].poc;
897 int td = av_clip(poc1 - poc0, -128, 127);
898 if(td == 0 || h->ref_list[0][i].long_ref){
899 h->dist_scale_factor[i] = 256;
901 int tb = av_clip(poc - poc0, -128, 127);
902 int tx = (16384 + (FFABS(td) >> 1)) / td;
903 h->dist_scale_factor[i] = av_clip((tb*tx + 32) >> 6, -1024, 1023);
907 for(i=0; i<h->ref_count[0]; i++){
908 h->dist_scale_factor_field[2*i] =
909 h->dist_scale_factor_field[2*i+1] = h->dist_scale_factor[i];
913 static inline void direct_ref_list_init(H264Context * const h){
914 MpegEncContext * const s = &h->s;
915 Picture * const ref1 = &h->ref_list[1][0];
916 Picture * const cur = s->current_picture_ptr;
918 int sidx= s->picture_structure&1;
919 int ref1sidx= ref1->reference&1;
920 for(list=0; list<2; list++){
921 cur->ref_count[sidx][list] = h->ref_count[list];
922 for(j=0; j<h->ref_count[list]; j++)
923 cur->ref_poc[sidx][list][j] = 4*h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference&3);
925 if(s->picture_structure == PICT_FRAME){
926 memcpy(cur->ref_count[0], cur->ref_count[1], sizeof(cur->ref_count[0]));
927 memcpy(cur->ref_poc [0], cur->ref_poc [1], sizeof(cur->ref_poc [0]));
929 if(cur->pict_type != FF_B_TYPE || h->direct_spatial_mv_pred)
931 for(list=0; list<2; list++){
932 for(i=0; i<ref1->ref_count[ref1sidx][list]; i++){
933 int poc = ref1->ref_poc[ref1sidx][list][i];
934 if(((poc&3) == 3) != (s->picture_structure == PICT_FRAME))
935 poc= (poc&~3) + s->picture_structure;
936 h->map_col_to_list0[list][i] = 0; /* bogus; fills in for missing frames */
937 for(j=0; j<h->ref_count[list]; j++)
938 if(4*h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference&3) == poc){
939 h->map_col_to_list0[list][i] = j;
945 for(list=0; list<2; list++){
946 for(i=0; i<ref1->ref_count[ref1sidx][list]; i++){
947 j = h->map_col_to_list0[list][i];
948 h->map_col_to_list0_field[list][2*i] = 2*j;
949 h->map_col_to_list0_field[list][2*i+1] = 2*j+1;
955 static inline void pred_direct_motion(H264Context * const h, int *mb_type){
956 MpegEncContext * const s = &h->s;
957 int b8_stride = h->b8_stride;
958 int b4_stride = h->b_stride;
959 int mb_xy = h->mb_xy;
961 const int16_t (*l1mv0)[2], (*l1mv1)[2];
962 const int8_t *l1ref0, *l1ref1;
963 const int is_b8x8 = IS_8X8(*mb_type);
964 unsigned int sub_mb_type;
967 #define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM)
969 if(IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])){ // AFL/AFR/FR/FL -> AFL/FL
970 if(h->ref_list[1][0].reference == PICT_FRAME){ // AFL/AFR/FR/FL -> AFL
971 if(!IS_INTERLACED(*mb_type)){ // AFR/FR -> AFL
972 int cur_poc = s->current_picture_ptr->poc;
973 int *col_poc = h->ref_list[1]->field_poc;
974 int col_parity = FFABS(col_poc[0] - cur_poc) >= FFABS(col_poc[1] - cur_poc);
975 mb_xy= s->mb_x + ((s->mb_y&~1) + col_parity)*s->mb_stride;
976 l1mv0 = &h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]];
977 l1mv1 = &h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]];
978 l1ref0 = &h->ref_list[1][0].ref_index [0][h->mb2b8_xy[mb_xy]];
979 l1ref1 = &h->ref_list[1][0].ref_index [1][h->mb2b8_xy[mb_xy]];
983 l1mv0 += 2*b4_stride;
984 l1mv1 += 2*b4_stride;
988 }else if(!(s->picture_structure & h->ref_list[1][0].reference)){// FL -> FL & differ parity
989 int fieldoff= 2*(h->ref_list[1][0].reference)-3;
990 mb_xy += s->mb_stride*fieldoff;
993 }else{ // AFL/AFR/FR/FL -> AFR/FR
994 if(IS_INTERLACED(*mb_type)){ // AFL /FL -> AFR/FR
995 mb_xy= s->mb_x + (s->mb_y&~1)*s->mb_stride;
996 mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy];
997 mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + s->mb_stride];
1000 //FIXME IS_8X8(mb_type_col[0]) && !h->sps.direct_8x8_inference_flag
1001 if( (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)
1002 && (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA)
1004 sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1005 *mb_type |= MB_TYPE_16x8 |MB_TYPE_L0L1|MB_TYPE_DIRECT2; /* B_16x8 */
1007 sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1008 *mb_type |= MB_TYPE_8x8|MB_TYPE_L0L1;
1010 }else{ // AFR/FR -> AFR/FR
1013 mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy];
1014 if(IS_8X8(mb_type_col[0]) && !h->sps.direct_8x8_inference_flag){
1015 /* FIXME save sub mb types from previous frames (or derive from MVs)
1016 * so we know exactly what block size to use */
1017 sub_mb_type = MB_TYPE_8x8|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_4x4 */
1018 *mb_type |= MB_TYPE_8x8|MB_TYPE_L0L1;
1019 }else if(!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)){
1020 sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1021 *mb_type |= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_16x16 */
1023 sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1024 *mb_type |= MB_TYPE_8x8|MB_TYPE_L0L1;
1030 l1mv0 = &h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]];
1031 l1mv1 = &h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]];
1032 l1ref0 = &h->ref_list[1][0].ref_index [0][h->mb2b8_xy[mb_xy]];
1033 l1ref1 = &h->ref_list[1][0].ref_index [1][h->mb2b8_xy[mb_xy]];
1036 if(h->direct_spatial_mv_pred){
1041 /* FIXME interlacing + spatial direct uses wrong colocated block positions */
1043 /* ref = min(neighbors) */
1044 for(list=0; list<2; list++){
1045 int refa = h->ref_cache[list][scan8[0] - 1];
1046 int refb = h->ref_cache[list][scan8[0] - 8];
1047 int refc = h->ref_cache[list][scan8[0] - 8 + 4];
1048 if(refc == PART_NOT_AVAILABLE)
1049 refc = h->ref_cache[list][scan8[0] - 8 - 1];
1050 ref[list] = FFMIN3((unsigned)refa, (unsigned)refb, (unsigned)refc);
1055 if(ref[0] < 0 && ref[1] < 0){
1056 ref[0] = ref[1] = 0;
1057 mv[0][0] = mv[0][1] =
1058 mv[1][0] = mv[1][1] = 0;
1060 for(list=0; list<2; list++){
1062 pred_motion(h, 0, 4, list, ref[list], &mv[list][0], &mv[list][1]);
1064 mv[list][0] = mv[list][1] = 0;
1070 *mb_type &= ~MB_TYPE_L1;
1071 sub_mb_type &= ~MB_TYPE_L1;
1072 }else if(ref[0] < 0){
1074 *mb_type &= ~MB_TYPE_L0;
1075 sub_mb_type &= ~MB_TYPE_L0;
1078 if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
1079 for(i8=0; i8<4; i8++){
1082 int xy8 = x8+y8*b8_stride;
1083 int xy4 = 3*x8+y8*b4_stride;
1086 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1088 h->sub_mb_type[i8] = sub_mb_type;
1090 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
1091 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
1092 if(!IS_INTRA(mb_type_col[y8])
1093 && ( (l1ref0[xy8] == 0 && FFABS(l1mv0[xy4][0]) <= 1 && FFABS(l1mv0[xy4][1]) <= 1)
1094 || (l1ref0[xy8] < 0 && l1ref1[xy8] == 0 && FFABS(l1mv1[xy4][0]) <= 1 && FFABS(l1mv1[xy4][1]) <= 1))){
1096 a= pack16to32(mv[0][0],mv[0][1]);
1098 b= pack16to32(mv[1][0],mv[1][1]);
1100 a= pack16to32(mv[0][0],mv[0][1]);
1101 b= pack16to32(mv[1][0],mv[1][1]);
1103 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, a, 4);
1104 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, b, 4);
1106 }else if(IS_16X16(*mb_type)){
1109 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
1110 fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
1111 if(!IS_INTRA(mb_type_col[0])
1112 && ( (l1ref0[0] == 0 && FFABS(l1mv0[0][0]) <= 1 && FFABS(l1mv0[0][1]) <= 1)
1113 || (l1ref0[0] < 0 && l1ref1[0] == 0 && FFABS(l1mv1[0][0]) <= 1 && FFABS(l1mv1[0][1]) <= 1
1114 && (h->x264_build>33 || !h->x264_build)))){
1116 a= pack16to32(mv[0][0],mv[0][1]);
1118 b= pack16to32(mv[1][0],mv[1][1]);
1120 a= pack16to32(mv[0][0],mv[0][1]);
1121 b= pack16to32(mv[1][0],mv[1][1]);
1123 fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4);
1124 fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4);
1126 for(i8=0; i8<4; i8++){
1127 const int x8 = i8&1;
1128 const int y8 = i8>>1;
1130 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1132 h->sub_mb_type[i8] = sub_mb_type;
1134 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mv[0][0],mv[0][1]), 4);
1135 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mv[1][0],mv[1][1]), 4);
1136 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
1137 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
1140 if(!IS_INTRA(mb_type_col[0]) && ( l1ref0[x8 + y8*h->b8_stride] == 0
1141 || (l1ref0[x8 + y8*h->b8_stride] < 0 && l1ref1[x8 + y8*h->b8_stride] == 0
1142 && (h->x264_build>33 || !h->x264_build)))){
1143 const int16_t (*l1mv)[2]= l1ref0[x8 + y8*h->b8_stride] == 0 ? l1mv0 : l1mv1;
1144 if(IS_SUB_8X8(sub_mb_type)){
1145 const int16_t *mv_col = l1mv[x8*3 + y8*3*h->b_stride];
1146 if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
1148 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1150 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1153 for(i4=0; i4<4; i4++){
1154 const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*h->b_stride];
1155 if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
1157 *(uint32_t*)h->mv_cache[0][scan8[i8*4+i4]] = 0;
1159 *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] = 0;
1165 }else{ /* direct temporal mv pred */
1166 const int *map_col_to_list0[2] = {h->map_col_to_list0[0], h->map_col_to_list0[1]};
1167 const int *dist_scale_factor = h->dist_scale_factor;
1169 if(FRAME_MBAFF && IS_INTERLACED(*mb_type)){
1170 map_col_to_list0[0] = h->map_col_to_list0_field[0];
1171 map_col_to_list0[1] = h->map_col_to_list0_field[1];
1172 dist_scale_factor = h->dist_scale_factor_field;
1174 if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
1175 /* FIXME assumes direct_8x8_inference == 1 */
1176 int y_shift = 2*!IS_INTERLACED(*mb_type);
1177 int ref_shift= FRAME_MBAFF ? y_shift : 1;
1179 for(i8=0; i8<4; i8++){
1180 const int x8 = i8&1;
1181 const int y8 = i8>>1;
1183 const int16_t (*l1mv)[2]= l1mv0;
1185 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1187 h->sub_mb_type[i8] = sub_mb_type;
1189 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1190 if(IS_INTRA(mb_type_col[y8])){
1191 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
1192 fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1193 fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1197 ref0 = l1ref0[x8 + y8*b8_stride];
1199 ref0 = map_col_to_list0[0][ref0*2>>ref_shift];
1201 ref0 = map_col_to_list0[1][l1ref1[x8 + y8*b8_stride]*2>>ref_shift];
1204 scale = dist_scale_factor[ref0];
1205 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
1208 const int16_t *mv_col = l1mv[x8*3 + y8*b4_stride];
1209 int my_col = (mv_col[1]<<y_shift)/2;
1210 int mx = (scale * mv_col[0] + 128) >> 8;
1211 int my = (scale * my_col + 128) >> 8;
1212 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
1213 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-my_col), 4);
1219 /* one-to-one mv scaling */
1221 if(IS_16X16(*mb_type)){
1224 fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, 0, 1);
1225 if(IS_INTRA(mb_type_col[0])){
1228 const int ref0 = l1ref0[0] >= 0 ? map_col_to_list0[0][l1ref0[0]]
1229 : map_col_to_list0[1][l1ref1[0]];
1230 const int scale = dist_scale_factor[ref0];
1231 const int16_t *mv_col = l1ref0[0] >= 0 ? l1mv0[0] : l1mv1[0];
1233 mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
1234 mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
1236 mv0= pack16to32(mv_l0[0],mv_l0[1]);
1237 mv1= pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
1239 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
1240 fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, mv0, 4);
1241 fill_rectangle(&h-> mv_cache[1][scan8[0]], 4, 4, 8, mv1, 4);
1243 for(i8=0; i8<4; i8++){
1244 const int x8 = i8&1;
1245 const int y8 = i8>>1;
1247 const int16_t (*l1mv)[2]= l1mv0;
1249 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1251 h->sub_mb_type[i8] = sub_mb_type;
1252 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1253 if(IS_INTRA(mb_type_col[0])){
1254 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
1255 fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1256 fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1260 ref0 = l1ref0[x8 + y8*h->b8_stride];
1262 ref0 = map_col_to_list0[0][ref0];
1264 ref0 = map_col_to_list0[1][l1ref1[x8 + y8*h->b8_stride]];
1267 scale = dist_scale_factor[ref0];
1269 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
1270 if(IS_SUB_8X8(sub_mb_type)){
1271 const int16_t *mv_col = l1mv[x8*3 + y8*3*h->b_stride];
1272 int mx = (scale * mv_col[0] + 128) >> 8;
1273 int my = (scale * mv_col[1] + 128) >> 8;
1274 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
1275 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-mv_col[1]), 4);
1277 for(i4=0; i4<4; i4++){
1278 const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*h->b_stride];
1279 int16_t *mv_l0 = h->mv_cache[0][scan8[i8*4+i4]];
1280 mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
1281 mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
1282 *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] =
1283 pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
1290 static inline void write_back_motion(H264Context *h, int mb_type){
1291 MpegEncContext * const s = &h->s;
1292 const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
1293 const int b8_xy= 2*s->mb_x + 2*s->mb_y*h->b8_stride;
1296 if(!USES_LIST(mb_type, 0))
1297 fill_rectangle(&s->current_picture.ref_index[0][b8_xy], 2, 2, h->b8_stride, (uint8_t)LIST_NOT_USED, 1);
1299 for(list=0; list<h->list_count; list++){
1301 if(!USES_LIST(mb_type, list))
1305 *(uint64_t*)s->current_picture.motion_val[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+0 + 8*y];
1306 *(uint64_t*)s->current_picture.motion_val[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+2 + 8*y];
1308 if( h->pps.cabac ) {
1309 if(IS_SKIP(mb_type))
1310 fill_rectangle(h->mvd_table[list][b_xy], 4, 4, h->b_stride, 0, 4);
1313 *(uint64_t*)h->mvd_table[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+0 + 8*y];
1314 *(uint64_t*)h->mvd_table[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+2 + 8*y];
1319 int8_t *ref_index = &s->current_picture.ref_index[list][b8_xy];
1320 ref_index[0+0*h->b8_stride]= h->ref_cache[list][scan8[0]];
1321 ref_index[1+0*h->b8_stride]= h->ref_cache[list][scan8[4]];
1322 ref_index[0+1*h->b8_stride]= h->ref_cache[list][scan8[8]];
1323 ref_index[1+1*h->b8_stride]= h->ref_cache[list][scan8[12]];
1327 if(h->slice_type_nos == FF_B_TYPE && h->pps.cabac){
1328 if(IS_8X8(mb_type)){
1329 uint8_t *direct_table = &h->direct_table[b8_xy];
1330 direct_table[1+0*h->b8_stride] = IS_DIRECT(h->sub_mb_type[1]) ? 1 : 0;
1331 direct_table[0+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[2]) ? 1 : 0;
1332 direct_table[1+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[3]) ? 1 : 0;
1338 * Decodes a network abstraction layer unit.
1339 * @param consumed is the number of bytes used as input
1340 * @param length is the length of the array
1341 * @param dst_length is the number of decoded bytes FIXME here or a decode rbsp tailing?
1342 * @returns decoded bytes, might be src+1 if no escapes
1344 static const uint8_t *decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
1349 // src[0]&0x80; //forbidden bit
1350 h->nal_ref_idc= src[0]>>5;
1351 h->nal_unit_type= src[0]&0x1F;
1355 for(i=0; i<length; i++)
1356 printf("%2X ", src[i]);
1358 for(i=0; i+1<length; i+=2){
1359 if(src[i]) continue;
1360 if(i>0 && src[i-1]==0) i--;
1361 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
1363 /* startcode, so we must be past the end */
1370 if(i>=length-1){ //no escaped 0
1371 *dst_length= length;
1372 *consumed= length+1; //+1 for the header
1376 bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
1377 h->rbsp_buffer[bufidx]= av_fast_realloc(h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length);
1378 dst= h->rbsp_buffer[bufidx];
1384 //printf("decoding esc\n");
1387 //remove escapes (very rare 1:2^22)
1388 if(si+2<length && src[si]==0 && src[si+1]==0 && src[si+2]<=3){
1389 if(src[si+2]==3){ //escape
1394 }else //next start code
1398 dst[di++]= src[si++];
1402 *consumed= si + 1;//+1 for the header
1403 //FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
1408 * identifies the exact end of the bitstream
1409 * @return the length of the trailing, or 0 if damaged
1411 static int decode_rbsp_trailing(H264Context *h, const uint8_t *src){
1415 tprintf(h->s.avctx, "rbsp trailing %X\n", v);
1425 * IDCT transforms the 16 dc values and dequantizes them.
1426 * @param qp quantization parameter
1428 static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
1431 int temp[16]; //FIXME check if this is a good idea
1432 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
1433 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1435 //memset(block, 64, 2*256);
1438 const int offset= y_offset[i];
1439 const int z0= block[offset+stride*0] + block[offset+stride*4];
1440 const int z1= block[offset+stride*0] - block[offset+stride*4];
1441 const int z2= block[offset+stride*1] - block[offset+stride*5];
1442 const int z3= block[offset+stride*1] + block[offset+stride*5];
1451 const int offset= x_offset[i];
1452 const int z0= temp[4*0+i] + temp[4*2+i];
1453 const int z1= temp[4*0+i] - temp[4*2+i];
1454 const int z2= temp[4*1+i] - temp[4*3+i];
1455 const int z3= temp[4*1+i] + temp[4*3+i];
1457 block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
1458 block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
1459 block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
1460 block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
1466 * DCT transforms the 16 dc values.
1467 * @param qp quantization parameter ??? FIXME
1469 static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
1470 // const int qmul= dequant_coeff[qp][0];
1472 int temp[16]; //FIXME check if this is a good idea
1473 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
1474 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1477 const int offset= y_offset[i];
1478 const int z0= block[offset+stride*0] + block[offset+stride*4];
1479 const int z1= block[offset+stride*0] - block[offset+stride*4];
1480 const int z2= block[offset+stride*1] - block[offset+stride*5];
1481 const int z3= block[offset+stride*1] + block[offset+stride*5];
1490 const int offset= x_offset[i];
1491 const int z0= temp[4*0+i] + temp[4*2+i];
1492 const int z1= temp[4*0+i] - temp[4*2+i];
1493 const int z2= temp[4*1+i] - temp[4*3+i];
1494 const int z3= temp[4*1+i] + temp[4*3+i];
1496 block[stride*0 +offset]= (z0 + z3)>>1;
1497 block[stride*2 +offset]= (z1 + z2)>>1;
1498 block[stride*8 +offset]= (z1 - z2)>>1;
1499 block[stride*10+offset]= (z0 - z3)>>1;
1507 static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
1508 const int stride= 16*2;
1509 const int xStride= 16;
1512 a= block[stride*0 + xStride*0];
1513 b= block[stride*0 + xStride*1];
1514 c= block[stride*1 + xStride*0];
1515 d= block[stride*1 + xStride*1];
1522 block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
1523 block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
1524 block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
1525 block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
1529 static void chroma_dc_dct_c(DCTELEM *block){
1530 const int stride= 16*2;
1531 const int xStride= 16;
1534 a= block[stride*0 + xStride*0];
1535 b= block[stride*0 + xStride*1];
1536 c= block[stride*1 + xStride*0];
1537 d= block[stride*1 + xStride*1];
1544 block[stride*0 + xStride*0]= (a+c);
1545 block[stride*0 + xStride*1]= (e+b);
1546 block[stride*1 + xStride*0]= (a-c);
1547 block[stride*1 + xStride*1]= (e-b);
1552 * gets the chroma qp.
1554 static inline int get_chroma_qp(H264Context *h, int t, int qscale){
1555 return h->pps.chroma_qp_table[t][qscale];
1558 //FIXME need to check that this does not overflow signed 32 bit for low qp, I am not sure, it's very close
1559 //FIXME check that gcc inlines this (and optimizes intra & separate_dc stuff away)
1560 static inline int quantize_c(DCTELEM *block, uint8_t *scantable, int qscale, int intra, int separate_dc){
1562 const int * const quant_table= quant_coeff[qscale];
1563 const int bias= intra ? (1<<QUANT_SHIFT)/3 : (1<<QUANT_SHIFT)/6;
1564 const unsigned int threshold1= (1<<QUANT_SHIFT) - bias - 1;
1565 const unsigned int threshold2= (threshold1<<1);
1571 const int dc_bias= intra ? (1<<(QUANT_SHIFT-2))/3 : (1<<(QUANT_SHIFT-2))/6;
1572 const unsigned int dc_threshold1= (1<<(QUANT_SHIFT-2)) - dc_bias - 1;
1573 const unsigned int dc_threshold2= (dc_threshold1<<1);
1575 int level= block[0]*quant_coeff[qscale+18][0];
1576 if(((unsigned)(level+dc_threshold1))>dc_threshold2){
1578 level= (dc_bias + level)>>(QUANT_SHIFT-2);
1581 level= (dc_bias - level)>>(QUANT_SHIFT-2);
1584 // last_non_zero = i;
1589 const int dc_bias= intra ? (1<<(QUANT_SHIFT+1))/3 : (1<<(QUANT_SHIFT+1))/6;
1590 const unsigned int dc_threshold1= (1<<(QUANT_SHIFT+1)) - dc_bias - 1;
1591 const unsigned int dc_threshold2= (dc_threshold1<<1);
1593 int level= block[0]*quant_table[0];
1594 if(((unsigned)(level+dc_threshold1))>dc_threshold2){
1596 level= (dc_bias + level)>>(QUANT_SHIFT+1);
1599 level= (dc_bias - level)>>(QUANT_SHIFT+1);
1602 // last_non_zero = i;
1615 const int j= scantable[i];
1616 int level= block[j]*quant_table[j];
1618 // if( bias+level >= (1<<(QMAT_SHIFT - 3))
1619 // || bias-level >= (1<<(QMAT_SHIFT - 3))){
1620 if(((unsigned)(level+threshold1))>threshold2){
1622 level= (bias + level)>>QUANT_SHIFT;
1625 level= (bias - level)>>QUANT_SHIFT;
1634 return last_non_zero;
1637 static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
1638 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1639 int src_x_offset, int src_y_offset,
1640 qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
1641 MpegEncContext * const s = &h->s;
1642 const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
1643 int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
1644 const int luma_xy= (mx&3) + ((my&3)<<2);
1645 uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
1646 uint8_t * src_cb, * src_cr;
1647 int extra_width= h->emu_edge_width;
1648 int extra_height= h->emu_edge_height;
1650 const int full_mx= mx>>2;
1651 const int full_my= my>>2;
1652 const int pic_width = 16*s->mb_width;
1653 const int pic_height = 16*s->mb_height >> MB_FIELD;
1655 if(!pic->data[0]) //FIXME this is unacceptable, some sensible error concealment must be done for missing reference frames
1658 if(mx&7) extra_width -= 3;
1659 if(my&7) extra_height -= 3;
1661 if( full_mx < 0-extra_width
1662 || full_my < 0-extra_height
1663 || full_mx + 16/*FIXME*/ > pic_width + extra_width
1664 || full_my + 16/*FIXME*/ > pic_height + extra_height){
1665 ff_emulated_edge_mc(s->edge_emu_buffer, src_y - 2 - 2*h->mb_linesize, h->mb_linesize, 16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, pic_width, pic_height);
1666 src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
1670 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
1672 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
1675 if(ENABLE_GRAY && s->flags&CODEC_FLAG_GRAY) return;
1678 // chroma offset when predicting from a field of opposite parity
1679 my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
1680 emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
1682 src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
1683 src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
1686 ff_emulated_edge_mc(s->edge_emu_buffer, src_cb, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
1687 src_cb= s->edge_emu_buffer;
1689 chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
1692 ff_emulated_edge_mc(s->edge_emu_buffer, src_cr, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
1693 src_cr= s->edge_emu_buffer;
1695 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
1698 static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
1699 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1700 int x_offset, int y_offset,
1701 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1702 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
1703 int list0, int list1){
1704 MpegEncContext * const s = &h->s;
1705 qpel_mc_func *qpix_op= qpix_put;
1706 h264_chroma_mc_func chroma_op= chroma_put;
1708 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
1709 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
1710 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
1711 x_offset += 8*s->mb_x;
1712 y_offset += 8*(s->mb_y >> MB_FIELD);
1715 Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
1716 mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
1717 dest_y, dest_cb, dest_cr, x_offset, y_offset,
1718 qpix_op, chroma_op);
1721 chroma_op= chroma_avg;
1725 Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
1726 mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
1727 dest_y, dest_cb, dest_cr, x_offset, y_offset,
1728 qpix_op, chroma_op);
1732 static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
1733 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1734 int x_offset, int y_offset,
1735 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1736 h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
1737 h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
1738 int list0, int list1){
1739 MpegEncContext * const s = &h->s;
1741 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
1742 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
1743 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
1744 x_offset += 8*s->mb_x;
1745 y_offset += 8*(s->mb_y >> MB_FIELD);
1748 /* don't optimize for luma-only case, since B-frames usually
1749 * use implicit weights => chroma too. */
1750 uint8_t *tmp_cb = s->obmc_scratchpad;
1751 uint8_t *tmp_cr = s->obmc_scratchpad + 8;
1752 uint8_t *tmp_y = s->obmc_scratchpad + 8*h->mb_uvlinesize;
1753 int refn0 = h->ref_cache[0][ scan8[n] ];
1754 int refn1 = h->ref_cache[1][ scan8[n] ];
1756 mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
1757 dest_y, dest_cb, dest_cr,
1758 x_offset, y_offset, qpix_put, chroma_put);
1759 mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
1760 tmp_y, tmp_cb, tmp_cr,
1761 x_offset, y_offset, qpix_put, chroma_put);
1763 if(h->use_weight == 2){
1764 int weight0 = h->implicit_weight[refn0][refn1];
1765 int weight1 = 64 - weight0;
1766 luma_weight_avg( dest_y, tmp_y, h-> mb_linesize, 5, weight0, weight1, 0);
1767 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
1768 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
1770 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
1771 h->luma_weight[0][refn0], h->luma_weight[1][refn1],
1772 h->luma_offset[0][refn0] + h->luma_offset[1][refn1]);
1773 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1774 h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0],
1775 h->chroma_offset[0][refn0][0] + h->chroma_offset[1][refn1][0]);
1776 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1777 h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1],
1778 h->chroma_offset[0][refn0][1] + h->chroma_offset[1][refn1][1]);
1781 int list = list1 ? 1 : 0;
1782 int refn = h->ref_cache[list][ scan8[n] ];
1783 Picture *ref= &h->ref_list[list][refn];
1784 mc_dir_part(h, ref, n, square, chroma_height, delta, list,
1785 dest_y, dest_cb, dest_cr, x_offset, y_offset,
1786 qpix_put, chroma_put);
1788 luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
1789 h->luma_weight[list][refn], h->luma_offset[list][refn]);
1790 if(h->use_weight_chroma){
1791 chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1792 h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]);
1793 chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1794 h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]);
1799 static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
1800 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1801 int x_offset, int y_offset,
1802 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1803 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
1804 h264_weight_func *weight_op, h264_biweight_func *weight_avg,
1805 int list0, int list1){
1806 if((h->use_weight==2 && list0 && list1
1807 && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32))
1808 || h->use_weight==1)
1809 mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
1810 x_offset, y_offset, qpix_put, chroma_put,
1811 weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
1813 mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
1814 x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
1817 static inline void prefetch_motion(H264Context *h, int list){
1818 /* fetch pixels for estimated mv 4 macroblocks ahead
1819 * optimized for 64byte cache lines */
1820 MpegEncContext * const s = &h->s;
1821 const int refn = h->ref_cache[list][scan8[0]];
1823 const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
1824 const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
1825 uint8_t **src= h->ref_list[list][refn].data;
1826 int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
1827 s->dsp.prefetch(src[0]+off, s->linesize, 4);
1828 off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
1829 s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
1833 static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1834 qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
1835 qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
1836 h264_weight_func *weight_op, h264_biweight_func *weight_avg){
1837 MpegEncContext * const s = &h->s;
1838 const int mb_xy= h->mb_xy;
1839 const int mb_type= s->current_picture.mb_type[mb_xy];
1841 assert(IS_INTER(mb_type));
1843 prefetch_motion(h, 0);
1845 if(IS_16X16(mb_type)){
1846 mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
1847 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
1848 &weight_op[0], &weight_avg[0],
1849 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1850 }else if(IS_16X8(mb_type)){
1851 mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
1852 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
1853 &weight_op[1], &weight_avg[1],
1854 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1855 mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
1856 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
1857 &weight_op[1], &weight_avg[1],
1858 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
1859 }else if(IS_8X16(mb_type)){
1860 mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
1861 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1862 &weight_op[2], &weight_avg[2],
1863 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1864 mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
1865 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1866 &weight_op[2], &weight_avg[2],
1867 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
1871 assert(IS_8X8(mb_type));
1874 const int sub_mb_type= h->sub_mb_type[i];
1876 int x_offset= (i&1)<<2;
1877 int y_offset= (i&2)<<1;
1879 if(IS_SUB_8X8(sub_mb_type)){
1880 mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1881 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1882 &weight_op[3], &weight_avg[3],
1883 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1884 }else if(IS_SUB_8X4(sub_mb_type)){
1885 mc_part(h, n , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1886 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
1887 &weight_op[4], &weight_avg[4],
1888 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1889 mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
1890 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
1891 &weight_op[4], &weight_avg[4],
1892 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1893 }else if(IS_SUB_4X8(sub_mb_type)){
1894 mc_part(h, n , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1895 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1896 &weight_op[5], &weight_avg[5],
1897 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1898 mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
1899 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1900 &weight_op[5], &weight_avg[5],
1901 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1904 assert(IS_SUB_4X4(sub_mb_type));
1906 int sub_x_offset= x_offset + 2*(j&1);
1907 int sub_y_offset= y_offset + (j&2);
1908 mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
1909 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1910 &weight_op[6], &weight_avg[6],
1911 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1917 prefetch_motion(h, 1);
1920 static av_cold void decode_init_vlc(void){
1921 static int done = 0;
1928 chroma_dc_coeff_token_vlc.table = chroma_dc_coeff_token_vlc_table;
1929 chroma_dc_coeff_token_vlc.table_allocated = chroma_dc_coeff_token_vlc_table_size;
1930 init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5,
1931 &chroma_dc_coeff_token_len [0], 1, 1,
1932 &chroma_dc_coeff_token_bits[0], 1, 1,
1933 INIT_VLC_USE_NEW_STATIC);
1937 coeff_token_vlc[i].table = coeff_token_vlc_tables+offset;
1938 coeff_token_vlc[i].table_allocated = coeff_token_vlc_tables_size[i];
1939 init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17,
1940 &coeff_token_len [i][0], 1, 1,
1941 &coeff_token_bits[i][0], 1, 1,
1942 INIT_VLC_USE_NEW_STATIC);
1943 offset += coeff_token_vlc_tables_size[i];
1946 * This is a one time safety check to make sure that
1947 * the packed static coeff_token_vlc table sizes
1948 * were initialized correctly.
1950 assert(offset == sizeof(coeff_token_vlc_tables)/(sizeof(VLC_TYPE)*2));
1953 chroma_dc_total_zeros_vlc[i].table = chroma_dc_total_zeros_vlc_tables[i];
1954 chroma_dc_total_zeros_vlc[i].table_allocated = chroma_dc_total_zeros_vlc_tables_size;
1955 init_vlc(&chroma_dc_total_zeros_vlc[i],
1956 CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4,
1957 &chroma_dc_total_zeros_len [i][0], 1, 1,
1958 &chroma_dc_total_zeros_bits[i][0], 1, 1,
1959 INIT_VLC_USE_NEW_STATIC);
1961 for(i=0; i<15; i++){
1962 total_zeros_vlc[i].table = total_zeros_vlc_tables[i];
1963 total_zeros_vlc[i].table_allocated = total_zeros_vlc_tables_size;
1964 init_vlc(&total_zeros_vlc[i],
1965 TOTAL_ZEROS_VLC_BITS, 16,
1966 &total_zeros_len [i][0], 1, 1,
1967 &total_zeros_bits[i][0], 1, 1,
1968 INIT_VLC_USE_NEW_STATIC);
1972 run_vlc[i].table = run_vlc_tables[i];
1973 run_vlc[i].table_allocated = run_vlc_tables_size;
1974 init_vlc(&run_vlc[i],
1976 &run_len [i][0], 1, 1,
1977 &run_bits[i][0], 1, 1,
1978 INIT_VLC_USE_NEW_STATIC);
1980 run7_vlc.table = run7_vlc_table,
1981 run7_vlc.table_allocated = run7_vlc_table_size;
1982 init_vlc(&run7_vlc, RUN7_VLC_BITS, 16,
1983 &run_len [6][0], 1, 1,
1984 &run_bits[6][0], 1, 1,
1985 INIT_VLC_USE_NEW_STATIC);
1989 static void free_tables(H264Context *h){
1992 av_freep(&h->intra4x4_pred_mode);
1993 av_freep(&h->chroma_pred_mode_table);
1994 av_freep(&h->cbp_table);
1995 av_freep(&h->mvd_table[0]);
1996 av_freep(&h->mvd_table[1]);
1997 av_freep(&h->direct_table);
1998 av_freep(&h->non_zero_count);
1999 av_freep(&h->slice_table_base);
2000 h->slice_table= NULL;
2002 av_freep(&h->mb2b_xy);
2003 av_freep(&h->mb2b8_xy);
2005 for(i = 0; i < MAX_SPS_COUNT; i++)
2006 av_freep(h->sps_buffers + i);
2008 for(i = 0; i < MAX_PPS_COUNT; i++)
2009 av_freep(h->pps_buffers + i);
2011 for(i = 0; i < h->s.avctx->thread_count; i++) {
2012 hx = h->thread_context[i];
2014 av_freep(&hx->top_borders[1]);
2015 av_freep(&hx->top_borders[0]);
2016 av_freep(&hx->s.obmc_scratchpad);
2020 static void init_dequant8_coeff_table(H264Context *h){
2022 const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
2023 h->dequant8_coeff[0] = h->dequant8_buffer[0];
2024 h->dequant8_coeff[1] = h->dequant8_buffer[1];
2026 for(i=0; i<2; i++ ){
2027 if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
2028 h->dequant8_coeff[1] = h->dequant8_buffer[0];
2032 for(q=0; q<52; q++){
2033 int shift = ff_div6[q];
2034 int idx = ff_rem6[q];
2036 h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
2037 ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
2038 h->pps.scaling_matrix8[i][x]) << shift;
2043 static void init_dequant4_coeff_table(H264Context *h){
2045 const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
2046 for(i=0; i<6; i++ ){
2047 h->dequant4_coeff[i] = h->dequant4_buffer[i];
2049 if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
2050 h->dequant4_coeff[i] = h->dequant4_buffer[j];
2057 for(q=0; q<52; q++){
2058 int shift = ff_div6[q] + 2;
2059 int idx = ff_rem6[q];
2061 h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
2062 ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
2063 h->pps.scaling_matrix4[i][x]) << shift;
2068 static void init_dequant_tables(H264Context *h){
2070 init_dequant4_coeff_table(h);
2071 if(h->pps.transform_8x8_mode)
2072 init_dequant8_coeff_table(h);
2073 if(h->sps.transform_bypass){
2076 h->dequant4_coeff[i][0][x] = 1<<6;
2077 if(h->pps.transform_8x8_mode)
2080 h->dequant8_coeff[i][0][x] = 1<<6;
2087 * needs width/height
2089 static int alloc_tables(H264Context *h){
2090 MpegEncContext * const s = &h->s;
2091 const int big_mb_num= s->mb_stride * (s->mb_height+1);
2094 CHECKED_ALLOCZ(h->intra4x4_pred_mode, big_mb_num * 8 * sizeof(uint8_t))
2096 CHECKED_ALLOCZ(h->non_zero_count , big_mb_num * 16 * sizeof(uint8_t))
2097 CHECKED_ALLOCZ(h->slice_table_base , (big_mb_num+s->mb_stride) * sizeof(uint8_t))
2098 CHECKED_ALLOCZ(h->cbp_table, big_mb_num * sizeof(uint16_t))
2100 CHECKED_ALLOCZ(h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t))
2101 CHECKED_ALLOCZ(h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t));
2102 CHECKED_ALLOCZ(h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t));
2103 CHECKED_ALLOCZ(h->direct_table, 32*big_mb_num * sizeof(uint8_t));
2105 memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride) * sizeof(uint8_t));
2106 h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
2108 CHECKED_ALLOCZ(h->mb2b_xy , big_mb_num * sizeof(uint32_t));
2109 CHECKED_ALLOCZ(h->mb2b8_xy , big_mb_num * sizeof(uint32_t));
2110 for(y=0; y<s->mb_height; y++){
2111 for(x=0; x<s->mb_width; x++){
2112 const int mb_xy= x + y*s->mb_stride;
2113 const int b_xy = 4*x + 4*y*h->b_stride;
2114 const int b8_xy= 2*x + 2*y*h->b8_stride;
2116 h->mb2b_xy [mb_xy]= b_xy;
2117 h->mb2b8_xy[mb_xy]= b8_xy;
2121 s->obmc_scratchpad = NULL;
2123 if(!h->dequant4_coeff[0])
2124 init_dequant_tables(h);
2133 * Mimic alloc_tables(), but for every context thread.
2135 static void clone_tables(H264Context *dst, H264Context *src){
2136 dst->intra4x4_pred_mode = src->intra4x4_pred_mode;
2137 dst->non_zero_count = src->non_zero_count;
2138 dst->slice_table = src->slice_table;
2139 dst->cbp_table = src->cbp_table;
2140 dst->mb2b_xy = src->mb2b_xy;
2141 dst->mb2b8_xy = src->mb2b8_xy;
2142 dst->chroma_pred_mode_table = src->chroma_pred_mode_table;
2143 dst->mvd_table[0] = src->mvd_table[0];
2144 dst->mvd_table[1] = src->mvd_table[1];
2145 dst->direct_table = src->direct_table;
2147 dst->s.obmc_scratchpad = NULL;
2148 ff_h264_pred_init(&dst->hpc, src->s.codec_id);
2153 * Allocate buffers which are not shared amongst multiple threads.
2155 static int context_init(H264Context *h){
2156 CHECKED_ALLOCZ(h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t))
2157 CHECKED_ALLOCZ(h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t))
2161 return -1; // free_tables will clean up for us
2164 static av_cold void common_init(H264Context *h){
2165 MpegEncContext * const s = &h->s;
2167 s->width = s->avctx->width;
2168 s->height = s->avctx->height;
2169 s->codec_id= s->avctx->codec->id;
2171 ff_h264_pred_init(&h->hpc, s->codec_id);
2173 h->dequant_coeff_pps= -1;
2174 s->unrestricted_mv=1;
2175 s->decode=1; //FIXME
2177 memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
2178 memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
2181 static av_cold int decode_init(AVCodecContext *avctx){
2182 H264Context *h= avctx->priv_data;
2183 MpegEncContext * const s = &h->s;
2185 MPV_decode_defaults(s);
2190 s->out_format = FMT_H264;
2191 s->workaround_bugs= avctx->workaround_bugs;
2194 // s->decode_mb= ff_h263_decode_mb;
2195 s->quarter_sample = 1;
2198 if(avctx->codec_id == CODEC_ID_SVQ3)
2199 avctx->pix_fmt= PIX_FMT_YUVJ420P;
2201 avctx->pix_fmt= PIX_FMT_YUV420P;
2205 if(avctx->extradata_size > 0 && avctx->extradata &&
2206 *(char *)avctx->extradata == 1){
2213 h->thread_context[0] = h;
2214 h->outputed_poc = INT_MIN;
2218 static int frame_start(H264Context *h){
2219 MpegEncContext * const s = &h->s;
2222 if(MPV_frame_start(s, s->avctx) < 0)
2224 ff_er_frame_start(s);
2226 * MPV_frame_start uses pict_type to derive key_frame.
2227 * This is incorrect for H.264; IDR markings must be used.
2228 * Zero here; IDR markings per slice in frame or fields are ORed in later.
2229 * See decode_nal_units().
2231 s->current_picture_ptr->key_frame= 0;
2233 assert(s->linesize && s->uvlinesize);
2235 for(i=0; i<16; i++){
2236 h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
2237 h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
2240 h->block_offset[16+i]=
2241 h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2242 h->block_offset[24+16+i]=
2243 h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2246 /* can't be in alloc_tables because linesize isn't known there.
2247 * FIXME: redo bipred weight to not require extra buffer? */
2248 for(i = 0; i < s->avctx->thread_count; i++)
2249 if(!h->thread_context[i]->s.obmc_scratchpad)
2250 h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
2252 /* some macroblocks will be accessed before they're available */
2253 if(FRAME_MBAFF || s->avctx->thread_count > 1)
2254 memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(uint8_t));
2256 // s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
2258 // We mark the current picture as non-reference after allocating it, so
2259 // that if we break out due to an error it can be released automatically
2260 // in the next MPV_frame_start().
2261 // SVQ3 as well as most other codecs have only last/next/current and thus
2262 // get released even with set reference, besides SVQ3 and others do not
2263 // mark frames as reference later "naturally".
2264 if(s->codec_id != CODEC_ID_SVQ3)
2265 s->current_picture_ptr->reference= 0;
2267 s->current_picture_ptr->field_poc[0]=
2268 s->current_picture_ptr->field_poc[1]= INT_MAX;
2269 assert(s->current_picture_ptr->long_ref==0);
2274 static inline void backup_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int simple){
2275 MpegEncContext * const s = &h->s;
2279 src_cb -= uvlinesize;
2280 src_cr -= uvlinesize;
2282 // There are two lines saved, the line above the the top macroblock of a pair,
2283 // and the line above the bottom macroblock
2284 h->left_border[0]= h->top_borders[0][s->mb_x][15];
2285 for(i=1; i<17; i++){
2286 h->left_border[i]= src_y[15+i* linesize];
2289 *(uint64_t*)(h->top_borders[0][s->mb_x]+0)= *(uint64_t*)(src_y + 16*linesize);
2290 *(uint64_t*)(h->top_borders[0][s->mb_x]+8)= *(uint64_t*)(src_y +8+16*linesize);
2292 if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2293 h->left_border[17 ]= h->top_borders[0][s->mb_x][16+7];
2294 h->left_border[17+9]= h->top_borders[0][s->mb_x][24+7];
2296 h->left_border[i+17 ]= src_cb[7+i*uvlinesize];
2297 h->left_border[i+17+9]= src_cr[7+i*uvlinesize];
2299 *(uint64_t*)(h->top_borders[0][s->mb_x]+16)= *(uint64_t*)(src_cb+8*uvlinesize);
2300 *(uint64_t*)(h->top_borders[0][s->mb_x]+24)= *(uint64_t*)(src_cr+8*uvlinesize);
2304 static inline void xchg_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int xchg, int simple){
2305 MpegEncContext * const s = &h->s;
2312 if(h->deblocking_filter == 2) {
2314 deblock_left = h->slice_table[mb_xy] == h->slice_table[mb_xy - 1];
2315 deblock_top = h->slice_table[mb_xy] == h->slice_table[h->top_mb_xy];
2317 deblock_left = (s->mb_x > 0);
2318 deblock_top = (s->mb_y > 0);
2321 src_y -= linesize + 1;
2322 src_cb -= uvlinesize + 1;
2323 src_cr -= uvlinesize + 1;
2325 #define XCHG(a,b,t,xchg)\
2332 for(i = !deblock_top; i<17; i++){
2333 XCHG(h->left_border[i ], src_y [i* linesize], temp8, xchg);
2338 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg);
2339 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1);
2340 if(s->mb_x+1 < s->mb_width){
2341 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x+1]), *(uint64_t*)(src_y +17), temp64, 1);
2345 if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2347 for(i = !deblock_top; i<9; i++){
2348 XCHG(h->left_border[i+17 ], src_cb[i*uvlinesize], temp8, xchg);
2349 XCHG(h->left_border[i+17+9], src_cr[i*uvlinesize], temp8, xchg);
2353 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1);
2354 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1);
2359 static inline void backup_pair_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize){
2360 MpegEncContext * const s = &h->s;
2363 src_y -= 2 * linesize;
2364 src_cb -= 2 * uvlinesize;
2365 src_cr -= 2 * uvlinesize;
2367 // There are two lines saved, the line above the the top macroblock of a pair,
2368 // and the line above the bottom macroblock
2369 h->left_border[0]= h->top_borders[0][s->mb_x][15];
2370 h->left_border[1]= h->top_borders[1][s->mb_x][15];
2371 for(i=2; i<34; i++){
2372 h->left_border[i]= src_y[15+i* linesize];
2375 *(uint64_t*)(h->top_borders[0][s->mb_x]+0)= *(uint64_t*)(src_y + 32*linesize);
2376 *(uint64_t*)(h->top_borders[0][s->mb_x]+8)= *(uint64_t*)(src_y +8+32*linesize);
2377 *(uint64_t*)(h->top_borders[1][s->mb_x]+0)= *(uint64_t*)(src_y + 33*linesize);
2378 *(uint64_t*)(h->top_borders[1][s->mb_x]+8)= *(uint64_t*)(src_y +8+33*linesize);
2380 if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2381 h->left_border[34 ]= h->top_borders[0][s->mb_x][16+7];
2382 h->left_border[34+ 1]= h->top_borders[1][s->mb_x][16+7];
2383 h->left_border[34+18 ]= h->top_borders[0][s->mb_x][24+7];
2384 h->left_border[34+18+1]= h->top_borders[1][s->mb_x][24+7];
2385 for(i=2; i<18; i++){
2386 h->left_border[i+34 ]= src_cb[7+i*uvlinesize];
2387 h->left_border[i+34+18]= src_cr[7+i*uvlinesize];
2389 *(uint64_t*)(h->top_borders[0][s->mb_x]+16)= *(uint64_t*)(src_cb+16*uvlinesize);
2390 *(uint64_t*)(h->top_borders[0][s->mb_x]+24)= *(uint64_t*)(src_cr+16*uvlinesize);
2391 *(uint64_t*)(h->top_borders[1][s->mb_x]+16)= *(uint64_t*)(src_cb+17*uvlinesize);
2392 *(uint64_t*)(h->top_borders[1][s->mb_x]+24)= *(uint64_t*)(src_cr+17*uvlinesize);
2396 static inline void xchg_pair_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int xchg){
2397 MpegEncContext * const s = &h->s;
2400 int deblock_left = (s->mb_x > 0);
2401 int deblock_top = (s->mb_y > 1);
2403 tprintf(s->avctx, "xchg_pair_border: src_y:%p src_cb:%p src_cr:%p ls:%d uvls:%d\n", src_y, src_cb, src_cr, linesize, uvlinesize);
2405 src_y -= 2 * linesize + 1;
2406 src_cb -= 2 * uvlinesize + 1;
2407 src_cr -= 2 * uvlinesize + 1;
2409 #define XCHG(a,b,t,xchg)\
2416 for(i = (!deblock_top)<<1; i<34; i++){
2417 XCHG(h->left_border[i ], src_y [i* linesize], temp8, xchg);
2422 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg);
2423 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1);
2424 XCHG(*(uint64_t*)(h->top_borders[1][s->mb_x]+0), *(uint64_t*)(src_y +1 +linesize), temp64, xchg);
2425 XCHG(*(uint64_t*)(h->top_borders[1][s->mb_x]+8), *(uint64_t*)(src_y +9 +linesize), temp64, 1);
2426 if(s->mb_x+1 < s->mb_width){
2427 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x+1]), *(uint64_t*)(src_y +17), temp64, 1);
2428 XCHG(*(uint64_t*)(h->top_borders[1][s->mb_x+1]), *(uint64_t*)(src_y +17 +linesize), temp64, 1);
2432 if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2434 for(i = (!deblock_top) << 1; i<18; i++){
2435 XCHG(h->left_border[i+34 ], src_cb[i*uvlinesize], temp8, xchg);
2436 XCHG(h->left_border[i+34+18], src_cr[i*uvlinesize], temp8, xchg);
2440 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1);
2441 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1);
2442 XCHG(*(uint64_t*)(h->top_borders[1][s->mb_x]+16), *(uint64_t*)(src_cb+1 +uvlinesize), temp64, 1);
2443 XCHG(*(uint64_t*)(h->top_borders[1][s->mb_x]+24), *(uint64_t*)(src_cr+1 +uvlinesize), temp64, 1);
2448 static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
2449 MpegEncContext * const s = &h->s;
2450 const int mb_x= s->mb_x;
2451 const int mb_y= s->mb_y;
2452 const int mb_xy= h->mb_xy;
2453 const int mb_type= s->current_picture.mb_type[mb_xy];
2454 uint8_t *dest_y, *dest_cb, *dest_cr;
2455 int linesize, uvlinesize /*dct_offset*/;
2457 int *block_offset = &h->block_offset[0];
2458 const unsigned int bottom = mb_y & 1;
2459 const int transform_bypass = (s->qscale == 0 && h->sps.transform_bypass), is_h264 = (simple || s->codec_id == CODEC_ID_H264);
2460 void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
2461 void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
2463 dest_y = s->current_picture.data[0] + (mb_y * 16* s->linesize ) + mb_x * 16;
2464 dest_cb = s->current_picture.data[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2465 dest_cr = s->current_picture.data[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2467 s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
2468 s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
2470 if (!simple && MB_FIELD) {
2471 linesize = h->mb_linesize = s->linesize * 2;
2472 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2473 block_offset = &h->block_offset[24];
2474 if(mb_y&1){ //FIXME move out of this function?
2475 dest_y -= s->linesize*15;
2476 dest_cb-= s->uvlinesize*7;
2477 dest_cr-= s->uvlinesize*7;
2481 for(list=0; list<h->list_count; list++){
2482 if(!USES_LIST(mb_type, list))
2484 if(IS_16X16(mb_type)){
2485 int8_t *ref = &h->ref_cache[list][scan8[0]];
2486 fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
2488 for(i=0; i<16; i+=4){
2489 //FIXME can refs be smaller than 8x8 when !direct_8x8_inference ?
2490 int ref = h->ref_cache[list][scan8[i]];
2492 fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
2498 linesize = h->mb_linesize = s->linesize;
2499 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2500 // dct_offset = s->linesize * 16;
2503 if(transform_bypass){
2505 idct_add = IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
2506 }else if(IS_8x8DCT(mb_type)){
2507 idct_dc_add = s->dsp.h264_idct8_dc_add;
2508 idct_add = s->dsp.h264_idct8_add;
2510 idct_dc_add = s->dsp.h264_idct_dc_add;
2511 idct_add = s->dsp.h264_idct_add;
2514 if(!simple && FRAME_MBAFF && h->deblocking_filter && IS_INTRA(mb_type)
2515 && (!bottom || !IS_INTRA(s->current_picture.mb_type[mb_xy-s->mb_stride]))){
2516 int mbt_y = mb_y&~1;
2517 uint8_t *top_y = s->current_picture.data[0] + (mbt_y * 16* s->linesize ) + mb_x * 16;
2518 uint8_t *top_cb = s->current_picture.data[1] + (mbt_y * 8 * s->uvlinesize) + mb_x * 8;
2519 uint8_t *top_cr = s->current_picture.data[2] + (mbt_y * 8 * s->uvlinesize) + mb_x * 8;
2520 xchg_pair_border(h, top_y, top_cb, top_cr, s->linesize, s->uvlinesize, 1);
2523 if (!simple && IS_INTRA_PCM(mb_type)) {
2524 for (i=0; i<16; i++) {
2525 memcpy(dest_y + i* linesize, h->mb + i*8, 16);
2527 for (i=0; i<8; i++) {
2528 memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4, 8);
2529 memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4, 8);
2532 if(IS_INTRA(mb_type)){
2533 if(h->deblocking_filter && (simple || !FRAME_MBAFF))
2534 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
2536 if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2537 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
2538 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
2541 if(IS_INTRA4x4(mb_type)){
2542 if(simple || !s->encoding){
2543 if(IS_8x8DCT(mb_type)){
2544 for(i=0; i<16; i+=4){
2545 uint8_t * const ptr= dest_y + block_offset[i];
2546 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2547 const int nnz = h->non_zero_count_cache[ scan8[i] ];
2548 h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
2549 (h->topright_samples_available<<i)&0x4000, linesize);
2551 if(nnz == 1 && h->mb[i*16])
2552 idct_dc_add(ptr, h->mb + i*16, linesize);
2554 idct_add(ptr, h->mb + i*16, linesize);
2558 for(i=0; i<16; i++){
2559 uint8_t * const ptr= dest_y + block_offset[i];
2561 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2564 if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
2565 const int topright_avail= (h->topright_samples_available<<i)&0x8000;
2566 assert(mb_y || linesize <= block_offset[i]);
2567 if(!topright_avail){
2568 tr= ptr[3 - linesize]*0x01010101;
2569 topright= (uint8_t*) &tr;
2571 topright= ptr + 4 - linesize;
2575 h->hpc.pred4x4[ dir ](ptr, topright, linesize);
2576 nnz = h->non_zero_count_cache[ scan8[i] ];
2579 if(nnz == 1 && h->mb[i*16])
2580 idct_dc_add(ptr, h->mb + i*16, linesize);
2582 idct_add(ptr, h->mb + i*16, linesize);
2584 svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
2589 h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
2591 if(!transform_bypass)
2592 h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
2594 svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
2596 if(h->deblocking_filter && (simple || !FRAME_MBAFF))
2597 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
2599 hl_motion(h, dest_y, dest_cb, dest_cr,
2600 s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
2601 s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
2602 s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
2606 if(!IS_INTRA4x4(mb_type)){
2608 if(IS_INTRA16x16(mb_type)){
2609 for(i=0; i<16; i++){
2610 if(h->non_zero_count_cache[ scan8[i] ])
2611 idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2612 else if(h->mb[i*16])
2613 idct_dc_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2616 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
2617 for(i=0; i<16; i+=di){
2618 int nnz = h->non_zero_count_cache[ scan8[i] ];
2620 if(nnz==1 && h->mb[i*16])
2621 idct_dc_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2623 idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2628 for(i=0; i<16; i++){
2629 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
2630 uint8_t * const ptr= dest_y + block_offset[i];
2631 svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
2637 if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2638 uint8_t *dest[2] = {dest_cb, dest_cr};
2639 if(transform_bypass){
2640 idct_add = idct_dc_add = s->dsp.add_pixels4;
2642 idct_add = s->dsp.h264_idct_add;
2643 idct_dc_add = s->dsp.h264_idct_dc_add;
2644 chroma_dc_dequant_idct_c(h->mb + 16*16, h->chroma_qp[0], h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
2645 chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp[1], h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]);
2648 for(i=16; i<16+8; i++){
2649 if(h->non_zero_count_cache[ scan8[i] ])
2650 idct_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
2651 else if(h->mb[i*16])
2652 idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
2655 for(i=16; i<16+8; i++){
2656 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2657 uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
2658 svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
2664 if(h->deblocking_filter) {
2665 if (!simple && FRAME_MBAFF) {
2666 //FIXME try deblocking one mb at a time?
2667 // the reduction in load/storing mvs and such might outweigh the extra backup/xchg_border
2668 const int mb_y = s->mb_y - 1;
2669 uint8_t *pair_dest_y, *pair_dest_cb, *pair_dest_cr;
2670 const int mb_xy= mb_x + mb_y*s->mb_stride;
2671 const int mb_type_top = s->current_picture.mb_type[mb_xy];
2672 const int mb_type_bottom= s->current_picture.mb_type[mb_xy+s->mb_stride];
2673 if (!bottom) return;
2674 pair_dest_y = s->current_picture.data[0] + (mb_y * 16* s->linesize ) + mb_x * 16;
2675 pair_dest_cb = s->current_picture.data[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2676 pair_dest_cr = s->current_picture.data[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2678 if(IS_INTRA(mb_type_top | mb_type_bottom))
2679 xchg_pair_border(h, pair_dest_y, pair_dest_cb, pair_dest_cr, s->linesize, s->uvlinesize, 0);
2681 backup_pair_border(h, pair_dest_y, pair_dest_cb, pair_dest_cr, s->linesize, s->uvlinesize);
2684 s->mb_y--; h->mb_xy -= s->mb_stride;
2685 tprintf(h->s.avctx, "call mbaff filter_mb mb_x:%d mb_y:%d pair_dest_y = %p, dest_y = %p\n", mb_x, mb_y, pair_dest_y, dest_y);
2686 fill_caches(h, mb_type_top, 1); //FIXME don't fill stuff which isn't used by filter_mb
2687 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2688 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2689 filter_mb(h, mb_x, mb_y, pair_dest_y, pair_dest_cb, pair_dest_cr, linesize, uvlinesize);
2691 s->mb_y++; h->mb_xy += s->mb_stride;
2692 tprintf(h->s.avctx, "call mbaff filter_mb\n");
2693 fill_caches(h, mb_type_bottom, 1); //FIXME don't fill stuff which isn't used by filter_mb
2694 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy+s->mb_stride]);
2695 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy+s->mb_stride]);
2696 filter_mb(h, mb_x, mb_y+1, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2698 tprintf(h->s.avctx, "call filter_mb\n");
2699 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, simple);
2700 fill_caches(h, mb_type, 1); //FIXME don't fill stuff which isn't used by filter_mb
2701 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2702 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2703 filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2709 * Process a macroblock; this case avoids checks for expensive uncommon cases.
2711 static void hl_decode_mb_simple(H264Context *h){
2712 hl_decode_mb_internal(h, 1);
2716 * Process a macroblock; this handles edge cases, such as interlacing.
2718 static void av_noinline hl_decode_mb_complex(H264Context *h){
2719 hl_decode_mb_internal(h, 0);
2722 static void hl_decode_mb(H264Context *h){
2723 MpegEncContext * const s = &h->s;
2724 const int mb_xy= h->mb_xy;
2725 const int mb_type= s->current_picture.mb_type[mb_xy];
2726 int is_complex = FRAME_MBAFF || MB_FIELD || IS_INTRA_PCM(mb_type) || s->codec_id != CODEC_ID_H264 ||
2727 (ENABLE_GRAY && (s->flags&CODEC_FLAG_GRAY)) || (ENABLE_H264_ENCODER && s->encoding) || ENABLE_SMALL;
2729 if(ENABLE_H264_ENCODER && !s->decode)
2733 hl_decode_mb_complex(h);
2734 else hl_decode_mb_simple(h);
2737 static void pic_as_field(Picture *pic, const int parity){
2739 for (i = 0; i < 4; ++i) {
2740 if (parity == PICT_BOTTOM_FIELD)
2741 pic->data[i] += pic->linesize[i];
2742 pic->reference = parity;
2743 pic->linesize[i] *= 2;
2745 pic->poc= pic->field_poc[parity == PICT_BOTTOM_FIELD];
2748 static int split_field_copy(Picture *dest, Picture *src,
2749 int parity, int id_add){
2750 int match = !!(src->reference & parity);
2754 if(parity != PICT_FRAME){
2755 pic_as_field(dest, parity);
2757 dest->pic_id += id_add;
2764 static int build_def_list(Picture *def, Picture **in, int len, int is_long, int sel){
2768 while(i[0]<len || i[1]<len){
2769 while(i[0]<len && !(in[ i[0] ] && (in[ i[0] ]->reference & sel)))
2771 while(i[1]<len && !(in[ i[1] ] && (in[ i[1] ]->reference & (sel^3))))
2774 in[ i[0] ]->pic_id= is_long ? i[0] : in[ i[0] ]->frame_num;
2775 split_field_copy(&def[index++], in[ i[0]++ ], sel , 1);
2778 in[ i[1] ]->pic_id= is_long ? i[1] : in[ i[1] ]->frame_num;
2779 split_field_copy(&def[index++], in[ i[1]++ ], sel^3, 0);
2786 static int add_sorted(Picture **sorted, Picture **src, int len, int limit, int dir){
2791 best_poc= dir ? INT_MIN : INT_MAX;
2793 for(i=0; i<len; i++){
2794 const int poc= src[i]->poc;
2795 if(((poc > limit) ^ dir) && ((poc < best_poc) ^ dir)){
2797 sorted[out_i]= src[i];
2800 if(best_poc == (dir ? INT_MIN : INT_MAX))
2802 limit= sorted[out_i++]->poc - dir;
2808 * fills the default_ref_list.
2810 static int fill_default_ref_list(H264Context *h){
2811 MpegEncContext * const s = &h->s;
2814 if(h->slice_type_nos==FF_B_TYPE){
2815 Picture *sorted[32];
2820 cur_poc= s->current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ];
2822 cur_poc= s->current_picture_ptr->poc;
2824 for(list= 0; list<2; list++){
2825 len= add_sorted(sorted , h->short_ref, h->short_ref_count, cur_poc, 1^list);
2826 len+=add_sorted(sorted+len, h->short_ref, h->short_ref_count, cur_poc, 0^list);
2828 len= build_def_list(h->default_ref_list[list] , sorted , len, 0, s->picture_structure);
2829 len+=build_def_list(h->default_ref_list[list]+len, h->long_ref, 16 , 1, s->picture_structure);
2832 if(len < h->ref_count[list])
2833 memset(&h->default_ref_list[list][len], 0, sizeof(Picture)*(h->ref_count[list] - len));
2837 if(lens[0] == lens[1] && lens[1] > 1){
2838 for(i=0; h->default_ref_list[0][i].data[0] == h->default_ref_list[1][i].data[0] && i<lens[0]; i++);
2840 FFSWAP(Picture, h->default_ref_list[1][0], h->default_ref_list[1][1]);
2843 len = build_def_list(h->default_ref_list[0] , h->short_ref, h->short_ref_count, 0, s->picture_structure);
2844 len+= build_def_list(h->default_ref_list[0]+len, h-> long_ref, 16 , 1, s->picture_structure);
2846 if(len < h->ref_count[0])
2847 memset(&h->default_ref_list[0][len], 0, sizeof(Picture)*(h->ref_count[0] - len));
2850 for (i=0; i<h->ref_count[0]; i++) {
2851 tprintf(h->s.avctx, "List0: %s fn:%d 0x%p\n", (h->default_ref_list[0][i].long_ref ? "LT" : "ST"), h->default_ref_list[0][i].pic_id, h->default_ref_list[0][i].data[0]);
2853 if(h->slice_type_nos==FF_B_TYPE){
2854 for (i=0; i<h->ref_count[1]; i++) {
2855 tprintf(h->s.avctx, "List1: %s fn:%d 0x%p\n", (h->default_ref_list[1][i].long_ref ? "LT" : "ST"), h->default_ref_list[1][i].pic_id, h->default_ref_list[1][i].data[0]);
2862 static void print_short_term(H264Context *h);
2863 static void print_long_term(H264Context *h);
2866 * Extract structure information about the picture described by pic_num in
2867 * the current decoding context (frame or field). Note that pic_num is
2868 * picture number without wrapping (so, 0<=pic_num<max_pic_num).
2869 * @param pic_num picture number for which to extract structure information
2870 * @param structure one of PICT_XXX describing structure of picture
2872 * @return frame number (short term) or long term index of picture
2873 * described by pic_num
2875 static int pic_num_extract(H264Context *h, int pic_num, int *structure){
2876 MpegEncContext * const s = &h->s;
2878 *structure = s->picture_structure;
2881 /* opposite field */
2882 *structure ^= PICT_FRAME;
2889 static int decode_ref_pic_list_reordering(H264Context *h){
2890 MpegEncContext * const s = &h->s;
2891 int list, index, pic_structure;
2893 print_short_term(h);
2896 for(list=0; list<h->list_count; list++){
2897 memcpy(h->ref_list[list], h->default_ref_list[list], sizeof(Picture)*h->ref_count[list]);
2899 if(get_bits1(&s->gb)){
2900 int pred= h->curr_pic_num;
2902 for(index=0; ; index++){
2903 unsigned int reordering_of_pic_nums_idc= get_ue_golomb(&s->gb);
2904 unsigned int pic_id;
2906 Picture *ref = NULL;
2908 if(reordering_of_pic_nums_idc==3)
2911 if(index >= h->ref_count[list]){
2912 av_log(h->s.avctx, AV_LOG_ERROR, "reference count overflow\n");
2916 if(reordering_of_pic_nums_idc<3){
2917 if(reordering_of_pic_nums_idc<2){
2918 const unsigned int abs_diff_pic_num= get_ue_golomb(&s->gb) + 1;
2921 if(abs_diff_pic_num > h->max_pic_num){
2922 av_log(h->s.avctx, AV_LOG_ERROR, "abs_diff_pic_num overflow\n");
2926 if(reordering_of_pic_nums_idc == 0) pred-= abs_diff_pic_num;
2927 else pred+= abs_diff_pic_num;
2928 pred &= h->max_pic_num - 1;
2930 frame_num = pic_num_extract(h, pred, &pic_structure);
2932 for(i= h->short_ref_count-1; i>=0; i--){
2933 ref = h->short_ref[i];
2934 assert(ref->reference);
2935 assert(!ref->long_ref);
2937 ref->frame_num == frame_num &&
2938 (ref->reference & pic_structure)
2946 pic_id= get_ue_golomb(&s->gb); //long_term_pic_idx
2948 long_idx= pic_num_extract(h, pic_id, &pic_structure);
2951 av_log(h->s.avctx, AV_LOG_ERROR, "long_term_pic_idx overflow\n");
2954 ref = h->long_ref[long_idx];
2955 assert(!(ref && !ref->reference));
2956 if(ref && (ref->reference & pic_structure)){
2957 ref->pic_id= pic_id;
2958 assert(ref->long_ref);
2966 av_log(h->s.avctx, AV_LOG_ERROR, "reference picture missing during reorder\n");
2967 memset(&h->ref_list[list][index], 0, sizeof(Picture)); //FIXME
2969 for(i=index; i+1<h->ref_count[list]; i++){
2970 if(ref->long_ref == h->ref_list[list][i].long_ref && ref->pic_id == h->ref_list[list][i].pic_id)
2973 for(; i > index; i--){
2974 h->ref_list[list][i]= h->ref_list[list][i-1];
2976 h->ref_list[list][index]= *ref;
2978 pic_as_field(&h->ref_list[list][index], pic_structure);
2982 av_log(h->s.avctx, AV_LOG_ERROR, "illegal reordering_of_pic_nums_idc\n");
2988 for(list=0; list<h->list_count; list++){
2989 for(index= 0; index < h->ref_count[list]; index++){
2990 if(!h->ref_list[list][index].data[0]){
2991 av_log(h->s.avctx, AV_LOG_ERROR, "Missing reference picture\n");
2992 h->ref_list[list][index]= s->current_picture; //FIXME this is not a sensible solution
2997 if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
2998 direct_dist_scale_factor(h);
2999 direct_ref_list_init(h);
3003 static void fill_mbaff_ref_list(H264Context *h){
3005 for(list=0; list<2; list++){ //FIXME try list_count
3006 for(i=0; i<h->ref_count[list]; i++){
3007 Picture *frame = &h->ref_list[list][i];
3008 Picture *field = &h->ref_list[list][16+2*i];
3011 field[0].linesize[j] <<= 1;
3012 field[0].reference = PICT_TOP_FIELD;
3013 field[1] = field[0];
3015 field[1].data[j] += frame->linesize[j];
3016 field[1].reference = PICT_BOTTOM_FIELD;
3018 h->luma_weight[list][16+2*i] = h->luma_weight[list][16+2*i+1] = h->luma_weight[list][i];
3019 h->luma_offset[list][16+2*i] = h->luma_offset[list][16+2*i+1] = h->luma_offset[list][i];
3021 h->chroma_weight[list][16+2*i][j] = h->chroma_weight[list][16+2*i+1][j] = h->chroma_weight[list][i][j];
3022 h->chroma_offset[list][16+2*i][j] = h->chroma_offset[list][16+2*i+1][j] = h->chroma_offset[list][i][j];
3026 for(j=0; j<h->ref_count[1]; j++){
3027 for(i=0; i<h->ref_count[0]; i++)
3028 h->implicit_weight[j][16+2*i] = h->implicit_weight[j][16+2*i+1] = h->implicit_weight[j][i];
3029 memcpy(h->implicit_weight[16+2*j], h->implicit_weight[j], sizeof(*h->implicit_weight));
3030 memcpy(h->implicit_weight[16+2*j+1], h->implicit_weight[j], sizeof(*h->implicit_weight));
3034 static int pred_weight_table(H264Context *h){
3035 MpegEncContext * const s = &h->s;
3037 int luma_def, chroma_def;
3040 h->use_weight_chroma= 0;
3041 h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
3042 h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
3043 luma_def = 1<<h->luma_log2_weight_denom;
3044 chroma_def = 1<<h->chroma_log2_weight_denom;
3046 for(list=0; list<2; list++){
3047 for(i=0; i<h->ref_count[list]; i++){
3048 int luma_weight_flag, chroma_weight_flag;
3050 luma_weight_flag= get_bits1(&s->gb);
3051 if(luma_weight_flag){
3052 h->luma_weight[list][i]= get_se_golomb(&s->gb);
3053 h->luma_offset[list][i]= get_se_golomb(&s->gb);
3054 if( h->luma_weight[list][i] != luma_def
3055 || h->luma_offset[list][i] != 0)
3058 h->luma_weight[list][i]= luma_def;
3059 h->luma_offset[list][i]= 0;
3063 chroma_weight_flag= get_bits1(&s->gb);
3064 if(chroma_weight_flag){
3067 h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
3068 h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
3069 if( h->chroma_weight[list][i][j] != chroma_def
3070 || h->chroma_offset[list][i][j] != 0)
3071 h->use_weight_chroma= 1;
3076 h->chroma_weight[list][i][j]= chroma_def;
3077 h->chroma_offset[list][i][j]= 0;
3082 if(h->slice_type_nos != FF_B_TYPE) break;
3084 h->use_weight= h->use_weight || h->use_weight_chroma;
3088 static void implicit_weight_table(H264Context *h){
3089 MpegEncContext * const s = &h->s;
3091 int cur_poc = s->current_picture_ptr->poc;
3093 if( h->ref_count[0] == 1 && h->ref_count[1] == 1
3094 && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
3096 h->use_weight_chroma= 0;
3101 h->use_weight_chroma= 2;
3102 h->luma_log2_weight_denom= 5;
3103 h->chroma_log2_weight_denom= 5;
3105 for(ref0=0; ref0 < h->ref_count[0]; ref0++){
3106 int poc0 = h->ref_list[0][ref0].poc;
3107 for(ref1=0; ref1 < h->ref_count[1]; ref1++){
3108 int poc1 = h->ref_list[1][ref1].poc;
3109 int td = av_clip(poc1 - poc0, -128, 127);
3111 int tb = av_clip(cur_poc - poc0, -128, 127);
3112 int tx = (16384 + (FFABS(td) >> 1)) / td;
3113 int dist_scale_factor = av_clip((tb*tx + 32) >> 6, -1024, 1023) >> 2;
3114 if(dist_scale_factor < -64 || dist_scale_factor > 128)
3115 h->implicit_weight[ref0][ref1] = 32;
3117 h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor;
3119 h->implicit_weight[ref0][ref1] = 32;
3125 * Mark a picture as no longer needed for reference. The refmask
3126 * argument allows unreferencing of individual fields or the whole frame.
3127 * If the picture becomes entirely unreferenced, but is being held for
3128 * display purposes, it is marked as such.
3129 * @param refmask mask of fields to unreference; the mask is bitwise
3130 * anded with the reference marking of pic
3131 * @return non-zero if pic becomes entirely unreferenced (except possibly
3132 * for display purposes) zero if one of the fields remains in
3135 static inline int unreference_pic(H264Context *h, Picture *pic, int refmask){
3137 if (pic->reference &= refmask) {
3140 for(i = 0; h->delayed_pic[i]; i++)
3141 if(pic == h->delayed_pic[i]){
3142 pic->reference=DELAYED_PIC_REF;
3150 * instantaneous decoder refresh.
3152 static void idr(H264Context *h){
3155 for(i=0; i<16; i++){
3156 remove_long(h, i, 0);
3158 assert(h->long_ref_count==0);
3160 for(i=0; i<h->short_ref_count; i++){
3161 unreference_pic(h, h->short_ref[i], 0);
3162 h->short_ref[i]= NULL;
3164 h->short_ref_count=0;
3165 h->prev_frame_num= 0;
3166 h->prev_frame_num_offset= 0;
3171 /* forget old pics after a seek */
3172 static void flush_dpb(AVCodecContext *avctx){
3173 H264Context *h= avctx->priv_data;
3175 for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
3176 if(h->delayed_pic[i])
3177 h->delayed_pic[i]->reference= 0;
3178 h->delayed_pic[i]= NULL;
3180 h->outputed_poc= INT_MIN;
3182 if(h->s.current_picture_ptr)
3183 h->s.current_picture_ptr->reference= 0;
3184 h->s.first_field= 0;
3185 ff_mpeg_flush(avctx);
3189 * Find a Picture in the short term reference list by frame number.
3190 * @param frame_num frame number to search for
3191 * @param idx the index into h->short_ref where returned picture is found
3192 * undefined if no picture found.
3193 * @return pointer to the found picture, or NULL if no pic with the provided
3194 * frame number is found
3196 static Picture * find_short(H264Context *h, int frame_num, int *idx){
3197 MpegEncContext * const s = &h->s;
3200 for(i=0; i<h->short_ref_count; i++){
3201 Picture *pic= h->short_ref[i];
3202 if(s->avctx->debug&FF_DEBUG_MMCO)
3203 av_log(h->s.avctx, AV_LOG_DEBUG, "%d %d %p\n", i, pic->frame_num, pic);
3204 if(pic->frame_num == frame_num) {
3213 * Remove a picture from the short term reference list by its index in
3214 * that list. This does no checking on the provided index; it is assumed
3215 * to be valid. Other list entries are shifted down.
3216 * @param i index into h->short_ref of picture to remove.
3218 static void remove_short_at_index(H264Context *h, int i){
3219 assert(i >= 0 && i < h->short_ref_count);
3220 h->short_ref[i]= NULL;
3221 if (--h->short_ref_count)
3222 memmove(&h->short_ref[i], &h->short_ref[i+1], (h->short_ref_count - i)*sizeof(Picture*));
3227 * @return the removed picture or NULL if an error occurs
3229 static Picture * remove_short(H264Context *h, int frame_num, int ref_mask){
3230 MpegEncContext * const s = &h->s;
3234 if(s->avctx->debug&FF_DEBUG_MMCO)
3235 av_log(h->s.avctx, AV_LOG_DEBUG, "remove short %d count %d\n", frame_num, h->short_ref_count);
3237 pic = find_short(h, frame_num, &i);
3239 if(unreference_pic(h, pic, ref_mask))
3240 remove_short_at_index(h, i);
3247 * Remove a picture from the long term reference list by its index in
3249 * @return the removed picture or NULL if an error occurs
3251 static Picture * remove_long(H264Context *h, int i, int ref_mask){
3254 pic= h->long_ref[i];
3256 if(unreference_pic(h, pic, ref_mask)){
3257 assert(h->long_ref[i]->long_ref == 1);
3258 h->long_ref[i]->long_ref= 0;
3259 h->long_ref[i]= NULL;
3260 h->long_ref_count--;
3268 * print short term list
3270 static void print_short_term(H264Context *h) {
3272 if(h->s.avctx->debug&FF_DEBUG_MMCO) {
3273 av_log(h->s.avctx, AV_LOG_DEBUG, "short term list:\n");
3274 for(i=0; i<h->short_ref_count; i++){
3275 Picture *pic= h->short_ref[i];
3276 av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]);
3282 * print long term list
3284 static void print_long_term(H264Context *h) {
3286 if(h->s.avctx->debug&FF_DEBUG_MMCO) {
3287 av_log(h->s.avctx, AV_LOG_DEBUG, "long term list:\n");
3288 for(i = 0; i < 16; i++){
3289 Picture *pic= h->long_ref[i];
3291 av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]);
3298 * Executes the reference picture marking (memory management control operations).
3300 static int execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
3301 MpegEncContext * const s = &h->s;
3303 int current_ref_assigned=0;
3306 if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0)
3307 av_log(h->s.avctx, AV_LOG_DEBUG, "no mmco here\n");
3309 for(i=0; i<mmco_count; i++){
3310 int structure, frame_num;
3311 if(s->avctx->debug&FF_DEBUG_MMCO)
3312 av_log(h->s.avctx, AV_LOG_DEBUG, "mmco:%d %d %d\n", h->mmco[i].opcode, h->mmco[i].short_pic_num, h->mmco[i].long_arg);
3314 if( mmco[i].opcode == MMCO_SHORT2UNUSED
3315 || mmco[i].opcode == MMCO_SHORT2LONG){
3316 frame_num = pic_num_extract(h, mmco[i].short_pic_num, &structure);
3317 pic = find_short(h, frame_num, &j);
3319 if(mmco[i].opcode != MMCO_SHORT2LONG || !h->long_ref[mmco[i].long_arg]
3320 || h->long_ref[mmco[i].long_arg]->frame_num != frame_num)
3321 av_log(h->s.avctx, AV_LOG_ERROR, "mmco: unref short failure\n");
3326 switch(mmco[i].opcode){
3327 case MMCO_SHORT2UNUSED:
3328 if(s->avctx->debug&FF_DEBUG_MMCO)
3329 av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref short %d count %d\n", h->mmco[i].short_pic_num, h->short_ref_count);
3330 remove_short(h, frame_num, structure ^ PICT_FRAME);
3332 case MMCO_SHORT2LONG:
3333 if (h->long_ref[mmco[i].long_arg] != pic)
3334 remove_long(h, mmco[i].long_arg, 0);
3336 remove_short_at_index(h, j);
3337 h->long_ref[ mmco[i].long_arg ]= pic;
3338 if (h->long_ref[ mmco[i].long_arg ]){
3339 h->long_ref[ mmco[i].long_arg ]->long_ref=1;
3340 h->long_ref_count++;
3343 case MMCO_LONG2UNUSED:
3344 j = pic_num_extract(h, mmco[i].long_arg, &structure);
3345 pic = h->long_ref[j];
3347 remove_long(h, j, structure ^ PICT_FRAME);
3348 } else if(s->avctx->debug&FF_DEBUG_MMCO)
3349 av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref long failure\n");
3352 // Comment below left from previous code as it is an interresting note.
3353 /* First field in pair is in short term list or
3354 * at a different long term index.
3355 * This is not allowed; see 7.4.3.3, notes 2 and 3.
3356 * Report the problem and keep the pair where it is,
3357 * and mark this field valid.
3360 if (h->long_ref[mmco[i].long_arg] != s->current_picture_ptr) {
3361 remove_long(h, mmco[i].long_arg, 0);
3363 h->long_ref[ mmco[i].long_arg ]= s->current_picture_ptr;
3364 h->long_ref[ mmco[i].long_arg ]->long_ref=1;
3365 h->long_ref_count++;
3368 s->current_picture_ptr->reference |= s->picture_structure;
3369 current_ref_assigned=1;
3371 case MMCO_SET_MAX_LONG:
3372 assert(mmco[i].long_arg <= 16);
3373 // just remove the long term which index is greater than new max
3374 for(j = mmco[i].long_arg; j<16; j++){
3375 remove_long(h, j, 0);
3379 while(h->short_ref_count){
3380 remove_short(h, h->short_ref[0]->frame_num, 0);
3382 for(j = 0; j < 16; j++) {
3383 remove_long(h, j, 0);
3385 s->current_picture_ptr->poc=
3386 s->current_picture_ptr->field_poc[0]=
3387 s->current_picture_ptr->field_poc[1]=
3391 s->current_picture_ptr->frame_num= 0;
3397 if (!current_ref_assigned) {
3398 /* Second field of complementary field pair; the first field of
3399 * which is already referenced. If short referenced, it
3400 * should be first entry in short_ref. If not, it must exist
3401 * in long_ref; trying to put it on the short list here is an
3402 * error in the encoded bit stream (ref: 7.4.3.3, NOTE 2 and 3).
3404 if (h->short_ref_count && h->short_ref[0] == s->current_picture_ptr) {
3405 /* Just mark the second field valid */
3406 s->current_picture_ptr->reference = PICT_FRAME;
3407 } else if (s->current_picture_ptr->long_ref) {
3408 av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term reference "
3409 "assignment for second field "
3410 "in complementary field pair "
3411 "(first field is long term)\n");
3413 pic= remove_short(h, s->current_picture_ptr->frame_num, 0);
3415 av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term buffer state detected\n");
3418 if(h->short_ref_count)
3419 memmove(&h->short_ref[1], &h->short_ref[0], h->short_ref_count*sizeof(Picture*));
3421 h->short_ref[0]= s->current_picture_ptr;
3422 h->short_ref_count++;
3423 s->current_picture_ptr->reference |= s->picture_structure;
3427 if (h->long_ref_count + h->short_ref_count > h->sps.ref_frame_count){
3429 /* We have too many reference frames, probably due to corrupted
3430 * stream. Need to discard one frame. Prevents overrun of the
3431 * short_ref and long_ref buffers.
3433 av_log(h->s.avctx, AV_LOG_ERROR,
3434 "number of reference frames exceeds max (probably "
3435 "corrupt input), discarding one\n");
3437 if (h->long_ref_count && !h->short_ref_count) {
3438 for (i = 0; i < 16; ++i)
3443 remove_long(h, i, 0);
3445 pic = h->short_ref[h->short_ref_count - 1];
3446 remove_short(h, pic->frame_num, 0);
3450 print_short_term(h);
3455 static int decode_ref_pic_marking(H264Context *h, GetBitContext *gb){
3456 MpegEncContext * const s = &h->s;
3460 if(h->nal_unit_type == NAL_IDR_SLICE){ //FIXME fields
3461 s->broken_link= get_bits1(gb) -1;
3463 h->mmco[0].opcode= MMCO_LONG;
3464 h->mmco[0].long_arg= 0;
3468 if(get_bits1(gb)){ // adaptive_ref_pic_marking_mode_flag
3469 for(i= 0; i<MAX_MMCO_COUNT; i++) {
3470 MMCOOpcode opcode= get_ue_golomb(gb);
3472 h->mmco[i].opcode= opcode;
3473 if(opcode==MMCO_SHORT2UNUSED || opcode==MMCO_SHORT2LONG){
3474 h->mmco[i].short_pic_num= (h->curr_pic_num - get_ue_golomb(gb) - 1) & (h->max_pic_num - 1);
3475 /* if(h->mmco[i].short_pic_num >= h->short_ref_count || h->short_ref[ h->mmco[i].short_pic_num ] == NULL){
3476 av_log(s->avctx, AV_LOG_ERROR, "illegal short ref in memory management control operation %d\n", mmco);
3480 if(opcode==MMCO_SHORT2LONG || opcode==MMCO_LONG2UNUSED || opcode==MMCO_LONG || opcode==MMCO_SET_MAX_LONG){
3481 unsigned int long_arg= get_ue_golomb(gb);
3482 if(long_arg >= 32 || (long_arg >= 16 && !(opcode == MMCO_LONG2UNUSED && FIELD_PICTURE))){
3483 av_log(h->s.avctx, AV_LOG_ERROR, "illegal long ref in memory management control operation %d\n", opcode);
3486 h->mmco[i].long_arg= long_arg;
3489 if(opcode > (unsigned)MMCO_LONG){
3490 av_log(h->s.avctx, AV_LOG_ERROR, "illegal memory management control operation %d\n", opcode);
3493 if(opcode == MMCO_END)
3498 assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count);
3500 if(h->short_ref_count && h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count &&
3501 !(FIELD_PICTURE && !s->first_field && s->current_picture_ptr->reference)) {
3502 h->mmco[0].opcode= MMCO_SHORT2UNUSED;
3503 h->mmco[0].short_pic_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num;
3505 if (FIELD_PICTURE) {
3506 h->mmco[0].short_pic_num *= 2;
3507 h->mmco[1].opcode= MMCO_SHORT2UNUSED;
3508 h->mmco[1].short_pic_num= h->mmco[0].short_pic_num + 1;
3518 static int init_poc(H264Context *h){
3519 MpegEncContext * const s = &h->s;
3520 const int max_frame_num= 1<<h->sps.log2_max_frame_num;
3522 Picture *cur = s->current_picture_ptr;
3524 h->frame_num_offset= h->prev_frame_num_offset;
3525 if(h->frame_num < h->prev_frame_num)
3526 h->frame_num_offset += max_frame_num;
3528 if(h->sps.poc_type==0){
3529 const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
3531 if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
3532 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
3533 else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
3534 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
3536 h->poc_msb = h->prev_poc_msb;
3537 //printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
3539 field_poc[1] = h->poc_msb + h->poc_lsb;
3540 if(s->picture_structure == PICT_FRAME)
3541 field_poc[1] += h->delta_poc_bottom;
3542 }else if(h->sps.poc_type==1){
3543 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
3546 if(h->sps.poc_cycle_length != 0)
3547 abs_frame_num = h->frame_num_offset + h->frame_num;
3551 if(h->nal_ref_idc==0 && abs_frame_num > 0)
3554 expected_delta_per_poc_cycle = 0;
3555 for(i=0; i < h->sps.poc_cycle_length; i++)
3556 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
3558 if(abs_frame_num > 0){
3559 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
3560 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
3562 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
3563 for(i = 0; i <= frame_num_in_poc_cycle; i++)
3564 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
3568 if(h->nal_ref_idc == 0)
3569 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
3571 field_poc[0] = expectedpoc + h->delta_poc[0];
3572 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
3574 if(s->picture_structure == PICT_FRAME)
3575 field_poc[1] += h->delta_poc[1];
3577 int poc= 2*(h->frame_num_offset + h->frame_num);
3586 if(s->picture_structure != PICT_BOTTOM_FIELD)
3587 s->current_picture_ptr->field_poc[0]= field_poc[0];
3588 if(s->picture_structure != PICT_TOP_FIELD)
3589 s->current_picture_ptr->field_poc[1]= field_poc[1];
3590 cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
3597 * initialize scan tables
3599 static void init_scan_tables(H264Context *h){
3600 MpegEncContext * const s = &h->s;
3602 if(s->dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
3603 memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
3604 memcpy(h-> field_scan, field_scan, 16*sizeof(uint8_t));
3606 for(i=0; i<16; i++){
3607 #define T(x) (x>>2) | ((x<<2) & 0xF)
3608 h->zigzag_scan[i] = T(zigzag_scan[i]);
3609 h-> field_scan[i] = T( field_scan[i]);
3613 if(s->dsp.h264_idct8_add == ff_h264_idct8_add_c){
3614 memcpy(h->zigzag_scan8x8, zigzag_scan8x8, 64*sizeof(uint8_t));
3615 memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
3616 memcpy(h->field_scan8x8, field_scan8x8, 64*sizeof(uint8_t));
3617 memcpy(h->field_scan8x8_cavlc, field_scan8x8_cavlc, 64*sizeof(uint8_t));
3619 for(i=0; i<64; i++){
3620 #define T(x) (x>>3) | ((x&7)<<3)
3621 h->zigzag_scan8x8[i] = T(zigzag_scan8x8[i]);
3622 h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
3623 h->field_scan8x8[i] = T(field_scan8x8[i]);
3624 h->field_scan8x8_cavlc[i] = T(field_scan8x8_cavlc[i]);
3628 if(h->sps.transform_bypass){ //FIXME same ugly
3629 h->zigzag_scan_q0 = zigzag_scan;
3630 h->zigzag_scan8x8_q0 = zigzag_scan8x8;
3631 h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
3632 h->field_scan_q0 = field_scan;
3633 h->field_scan8x8_q0 = field_scan8x8;
3634 h->field_scan8x8_cavlc_q0 = field_scan8x8_cavlc;
3636 h->zigzag_scan_q0 = h->zigzag_scan;
3637 h->zigzag_scan8x8_q0 = h->zigzag_scan8x8;
3638 h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
3639 h->field_scan_q0 = h->field_scan;
3640 h->field_scan8x8_q0 = h->field_scan8x8;
3641 h->field_scan8x8_cavlc_q0 = h->field_scan8x8_cavlc;
3646 * Replicates H264 "master" context to thread contexts.
3648 static void clone_slice(H264Context *dst, H264Context *src)
3650 memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset));
3651 dst->s.current_picture_ptr = src->s.current_picture_ptr;
3652 dst->s.current_picture = src->s.current_picture;
3653 dst->s.linesize = src->s.linesize;
3654 dst->s.uvlinesize = src->s.uvlinesize;
3655 dst->s.first_field = src->s.first_field;
3657 dst->prev_poc_msb = src->prev_poc_msb;
3658 dst->prev_poc_lsb = src->prev_poc_lsb;
3659 dst->prev_frame_num_offset = src->prev_frame_num_offset;
3660 dst->prev_frame_num = src->prev_frame_num;
3661 dst->short_ref_count = src->short_ref_count;
3663 memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref));
3664 memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref));
3665 memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
3666 memcpy(dst->ref_list, src->ref_list, sizeof(dst->ref_list));
3668 memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff));
3669 memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff));
3673 * decodes a slice header.
3674 * This will also call MPV_common_init() and frame_start() as needed.
3676 * @param h h264context
3677 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
3679 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
3681 static int decode_slice_header(H264Context *h, H264Context *h0){
3682 MpegEncContext * const s = &h->s;
3683 MpegEncContext * const s0 = &h0->s;
3684 unsigned int first_mb_in_slice;
3685 unsigned int pps_id;
3686 int num_ref_idx_active_override_flag;
3687 static const uint8_t slice_type_map[5]= {FF_P_TYPE, FF_B_TYPE, FF_I_TYPE, FF_SP_TYPE, FF_SI_TYPE};
3688 unsigned int slice_type, tmp, i, j;
3689 int default_ref_list_done = 0;
3690 int last_pic_structure;
3692 s->dropable= h->nal_ref_idc == 0;
3694 if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
3695 s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
3696 s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
3698 s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
3699 s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
3702 first_mb_in_slice= get_ue_golomb(&s->gb);
3704 if((s->flags2 & CODEC_FLAG2_CHUNKS) && first_mb_in_slice == 0){
3705 h0->current_slice = 0;
3706 if (!s0->first_field)
3707 s->current_picture_ptr= NULL;
3710 slice_type= get_ue_golomb(&s->gb);
3712 av_log(h->s.avctx, AV_LOG_ERROR, "slice type too large (%d) at %d %d\n", h->slice_type, s->mb_x, s->mb_y);
3717 h->slice_type_fixed=1;
3719 h->slice_type_fixed=0;
3721 slice_type= slice_type_map[ slice_type ];
3722 if (slice_type == FF_I_TYPE
3723 || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
3724 default_ref_list_done = 1;
3726 h->slice_type= slice_type;
3727 h->slice_type_nos= slice_type & 3;
3729 s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
3730 if (s->pict_type == FF_B_TYPE && s0->last_picture_ptr == NULL) {
3731 av_log(h->s.avctx, AV_LOG_ERROR,
3732 "B picture before any references, skipping\n");
3736 pps_id= get_ue_golomb(&s->gb);
3737 if(pps_id>=MAX_PPS_COUNT){
3738 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
3741 if(!h0->pps_buffers[pps_id]) {
3742 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS referenced\n");
3745 h->pps= *h0->pps_buffers[pps_id];
3747 if(!h0->sps_buffers[h->pps.sps_id]) {
3748 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS referenced\n");
3751 h->sps = *h0->sps_buffers[h->pps.sps_id];
3753 if(h == h0 && h->dequant_coeff_pps != pps_id){
3754 h->dequant_coeff_pps = pps_id;
3755 init_dequant_tables(h);
3758 s->mb_width= h->sps.mb_width;
3759 s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
3761 h->b_stride= s->mb_width*4;
3762 h->b8_stride= s->mb_width*2;
3764 s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
3765 if(h->sps.frame_mbs_only_flag)
3766 s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
3768 s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
3770 if (s->context_initialized
3771 && ( s->width != s->avctx->width || s->height != s->avctx->height)) {
3773 return -1; // width / height changed during parallelized decoding
3777 if (!s->context_initialized) {
3779 return -1; // we cant (re-)initialize context during parallel decoding
3780 if (MPV_common_init(s) < 0)
3784 init_scan_tables(h);
3787 for(i = 1; i < s->avctx->thread_count; i++) {
3789 c = h->thread_context[i] = av_malloc(sizeof(H264Context));
3790 memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
3791 memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
3794 init_scan_tables(c);
3798 for(i = 0; i < s->avctx->thread_count; i++)
3799 if(context_init(h->thread_context[i]) < 0)
3802 s->avctx->width = s->width;
3803 s->avctx->height = s->height;
3804 s->avctx->sample_aspect_ratio= h->sps.sar;
3805 if(!s->avctx->sample_aspect_ratio.den)
3806 s->avctx->sample_aspect_ratio.den = 1;
3808 if(h->sps.timing_info_present_flag){
3809 s->avctx->time_base= (AVRational){h->sps.num_units_in_tick * 2, h->sps.time_scale};
3810 if(h->x264_build > 0 && h->x264_build < 44)
3811 s->avctx->time_base.den *= 2;
3812 av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
3813 s->avctx->time_base.num, s->avctx->time_base.den, 1<<30);
3817 h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
3820 h->mb_aff_frame = 0;
3821 last_pic_structure = s0->picture_structure;
3822 if(h->sps.frame_mbs_only_flag){
3823 s->picture_structure= PICT_FRAME;
3825 if(get_bits1(&s->gb)) { //field_pic_flag
3826 s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
3828 s->picture_structure= PICT_FRAME;
3829 h->mb_aff_frame = h->sps.mb_aff;
3832 h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
3834 if(h0->current_slice == 0){
3835 while(h->frame_num != h->prev_frame_num &&
3836 h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
3837 av_log(NULL, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
3839 h->prev_frame_num++;
3840 h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
3841 s->current_picture_ptr->frame_num= h->prev_frame_num;
3842 execute_ref_pic_marking(h, NULL, 0);
3845 /* See if we have a decoded first field looking for a pair... */
3846 if (s0->first_field) {
3847 assert(s0->current_picture_ptr);
3848 assert(s0->current_picture_ptr->data[0]);
3849 assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
3851 /* figure out if we have a complementary field pair */
3852 if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
3854 * Previous field is unmatched. Don't display it, but let it
3855 * remain for reference if marked as such.
3857 s0->current_picture_ptr = NULL;
3858 s0->first_field = FIELD_PICTURE;
3861 if (h->nal_ref_idc &&
3862 s0->current_picture_ptr->reference &&
3863 s0->current_picture_ptr->frame_num != h->frame_num) {
3865 * This and previous field were reference, but had
3866 * different frame_nums. Consider this field first in
3867 * pair. Throw away previous field except for reference
3870 s0->first_field = 1;
3871 s0->current_picture_ptr = NULL;
3874 /* Second field in complementary pair */
3875 s0->first_field = 0;
3880 /* Frame or first field in a potentially complementary pair */
3881 assert(!s0->current_picture_ptr);
3882 s0->first_field = FIELD_PICTURE;
3885 if((!FIELD_PICTURE || s0->first_field) && frame_start(h) < 0) {
3886 s0->first_field = 0;
3893 s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
3895 assert(s->mb_num == s->mb_width * s->mb_height);
3896 if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
3897 first_mb_in_slice >= s->mb_num){
3898 av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
3901 s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
3902 s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
3903 if (s->picture_structure == PICT_BOTTOM_FIELD)
3904 s->resync_mb_y = s->mb_y = s->mb_y + 1;
3905 assert(s->mb_y < s->mb_height);
3907 if(s->picture_structure==PICT_FRAME){
3908 h->curr_pic_num= h->frame_num;
3909 h->max_pic_num= 1<< h->sps.log2_max_frame_num;
3911 h->curr_pic_num= 2*h->frame_num + 1;
3912 h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
3915 if(h->nal_unit_type == NAL_IDR_SLICE){
3916 get_ue_golomb(&s->gb); /* idr_pic_id */
3919 if(h->sps.poc_type==0){
3920 h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
3922 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
3923 h->delta_poc_bottom= get_se_golomb(&s->gb);
3927 if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
3928 h->delta_poc[0]= get_se_golomb(&s->gb);
3930 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
3931 h->delta_poc[1]= get_se_golomb(&s->gb);
3936 if(h->pps.redundant_pic_cnt_present){
3937 h->redundant_pic_count= get_ue_golomb(&s->gb);
3940 //set defaults, might be overridden a few lines later
3941 h->ref_count[0]= h->pps.ref_count[0];
3942 h->ref_count[1]= h->pps.ref_count[1];
3944 if(h->slice_type_nos != FF_I_TYPE){
3945 if(h->slice_type_nos == FF_B_TYPE){
3946 h->direct_spatial_mv_pred= get_bits1(&s->gb);
3948 num_ref_idx_active_override_flag= get_bits1(&s->gb);
3950 if(num_ref_idx_active_override_flag){
3951 h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
3952 if(h->slice_type_nos==FF_B_TYPE)
3953 h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
3955 if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
3956 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
3957 h->ref_count[0]= h->ref_count[1]= 1;
3961 if(h->slice_type_nos == FF_B_TYPE)
3968 if(!default_ref_list_done){
3969 fill_default_ref_list(h);
3972 if(h->slice_type_nos!=FF_I_TYPE && decode_ref_pic_list_reordering(h) < 0)
3975 if( (h->pps.weighted_pred && h->slice_type_nos == FF_P_TYPE )
3976 || (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
3977 pred_weight_table(h);
3978 else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE)
3979 implicit_weight_table(h);
3984 decode_ref_pic_marking(h0, &s->gb);
3987 fill_mbaff_ref_list(h);
3989 if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
3990 tmp = get_ue_golomb(&s->gb);
3992 av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
3995 h->cabac_init_idc= tmp;
3998 h->last_qscale_diff = 0;
3999 tmp = h->pps.init_qp + get_se_golomb(&s->gb);
4001 av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
4005 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
4006 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
4007 //FIXME qscale / qp ... stuff
4008 if(h->slice_type == FF_SP_TYPE){
4009 get_bits1(&s->gb); /* sp_for_switch_flag */
4011 if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
4012 get_se_golomb(&s->gb); /* slice_qs_delta */
4015 h->deblocking_filter = 1;
4016 h->slice_alpha_c0_offset = 0;
4017 h->slice_beta_offset = 0;
4018 if( h->pps.deblocking_filter_parameters_present ) {
4019 tmp= get_ue_golomb(&s->gb);
4021 av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
4024 h->deblocking_filter= tmp;
4025 if(h->deblocking_filter < 2)
4026 h->deblocking_filter^= 1; // 1<->0
4028 if( h->deblocking_filter ) {
4029 h->slice_alpha_c0_offset = get_se_golomb(&s->gb) << 1;
4030 h->slice_beta_offset = get_se_golomb(&s->gb) << 1;
4034 if( s->avctx->skip_loop_filter >= AVDISCARD_ALL
4035 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
4036 ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR && h->slice_type_nos == FF_B_TYPE)
4037 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
4038 h->deblocking_filter= 0;
4040 if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
4041 if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
4042 /* Cheat slightly for speed:
4043 Do not bother to deblock across slices. */
4044 h->deblocking_filter