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"
42 * Value of Picture.reference when Picture is not a reference picture, but
43 * is held for delayed output.
45 #define DELAYED_PIC_REF 4
47 static VLC coeff_token_vlc[4];
48 static VLC chroma_dc_coeff_token_vlc;
50 static VLC total_zeros_vlc[15];
51 static VLC chroma_dc_total_zeros_vlc[3];
53 static VLC run_vlc[6];
56 static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp);
57 static void svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc);
58 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);
59 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);
61 static av_always_inline uint32_t pack16to32(int a, int b){
62 #ifdef WORDS_BIGENDIAN
63 return (b&0xFFFF) + (a<<16);
65 return (a&0xFFFF) + (b<<16);
69 const uint8_t ff_rem6[52]={
70 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,
73 const uint8_t ff_div6[52]={
74 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,
80 * @param h height of the rectangle, should be a constant
81 * @param w width of the rectangle, should be a constant
82 * @param size the size of val (1 or 4), should be a constant
84 static av_always_inline void fill_rectangle(void *vp, int w, int h, int stride, uint32_t val, int size){
85 uint8_t *p= (uint8_t*)vp;
86 assert(size==1 || size==4);
92 assert((((long)vp)&(FFMIN(w, STRIDE_ALIGN)-1)) == 0);
93 assert((stride&(w-1))==0);
95 const uint16_t v= size==4 ? val : val*0x0101;
96 *(uint16_t*)(p + 0*stride)= v;
98 *(uint16_t*)(p + 1*stride)= v;
100 *(uint16_t*)(p + 2*stride)= v;
101 *(uint16_t*)(p + 3*stride)= v;
103 const uint32_t v= size==4 ? val : val*0x01010101;
104 *(uint32_t*)(p + 0*stride)= v;
106 *(uint32_t*)(p + 1*stride)= v;
108 *(uint32_t*)(p + 2*stride)= v;
109 *(uint32_t*)(p + 3*stride)= v;
111 //gcc can't optimize 64bit math on x86_32
112 #if defined(ARCH_X86_64) || (defined(MP_WORDSIZE) && MP_WORDSIZE >= 64)
113 const uint64_t v= val*0x0100000001ULL;
114 *(uint64_t*)(p + 0*stride)= v;
116 *(uint64_t*)(p + 1*stride)= v;
118 *(uint64_t*)(p + 2*stride)= v;
119 *(uint64_t*)(p + 3*stride)= v;
121 const uint64_t v= val*0x0100000001ULL;
122 *(uint64_t*)(p + 0+0*stride)= v;
123 *(uint64_t*)(p + 8+0*stride)= v;
124 *(uint64_t*)(p + 0+1*stride)= v;
125 *(uint64_t*)(p + 8+1*stride)= v;
127 *(uint64_t*)(p + 0+2*stride)= v;
128 *(uint64_t*)(p + 8+2*stride)= v;
129 *(uint64_t*)(p + 0+3*stride)= v;
130 *(uint64_t*)(p + 8+3*stride)= v;
132 *(uint32_t*)(p + 0+0*stride)= val;
133 *(uint32_t*)(p + 4+0*stride)= val;
135 *(uint32_t*)(p + 0+1*stride)= val;
136 *(uint32_t*)(p + 4+1*stride)= val;
138 *(uint32_t*)(p + 0+2*stride)= val;
139 *(uint32_t*)(p + 4+2*stride)= val;
140 *(uint32_t*)(p + 0+3*stride)= val;
141 *(uint32_t*)(p + 4+3*stride)= val;
143 *(uint32_t*)(p + 0+0*stride)= val;
144 *(uint32_t*)(p + 4+0*stride)= val;
145 *(uint32_t*)(p + 8+0*stride)= val;
146 *(uint32_t*)(p +12+0*stride)= val;
147 *(uint32_t*)(p + 0+1*stride)= val;
148 *(uint32_t*)(p + 4+1*stride)= val;
149 *(uint32_t*)(p + 8+1*stride)= val;
150 *(uint32_t*)(p +12+1*stride)= val;
152 *(uint32_t*)(p + 0+2*stride)= val;
153 *(uint32_t*)(p + 4+2*stride)= val;
154 *(uint32_t*)(p + 8+2*stride)= val;
155 *(uint32_t*)(p +12+2*stride)= val;
156 *(uint32_t*)(p + 0+3*stride)= val;
157 *(uint32_t*)(p + 4+3*stride)= val;
158 *(uint32_t*)(p + 8+3*stride)= val;
159 *(uint32_t*)(p +12+3*stride)= val;
166 static void fill_caches(H264Context *h, int mb_type, int for_deblock){
167 MpegEncContext * const s = &h->s;
168 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
169 int topleft_xy, top_xy, topright_xy, left_xy[2];
170 int topleft_type, top_type, topright_type, left_type[2];
174 //FIXME deblocking could skip the intra and nnz parts.
175 if(for_deblock && (h->slice_num == 1 || h->slice_table[mb_xy] == h->slice_table[mb_xy-s->mb_stride]) && !FRAME_MBAFF)
178 //wow what a mess, why didn't they simplify the interlacing&intra stuff, i can't imagine that these complex rules are worth it
180 top_xy = mb_xy - (s->mb_stride << FIELD_PICTURE);
181 topleft_xy = top_xy - 1;
182 topright_xy= top_xy + 1;
183 left_xy[1] = left_xy[0] = mb_xy-1;
193 const int pair_xy = s->mb_x + (s->mb_y & ~1)*s->mb_stride;
194 const int top_pair_xy = pair_xy - s->mb_stride;
195 const int topleft_pair_xy = top_pair_xy - 1;
196 const int topright_pair_xy = top_pair_xy + 1;
197 const int topleft_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[topleft_pair_xy]);
198 const int top_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[top_pair_xy]);
199 const int topright_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[topright_pair_xy]);
200 const int left_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[pair_xy-1]);
201 const int curr_mb_frame_flag = !IS_INTERLACED(mb_type);
202 const int bottom = (s->mb_y & 1);
203 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);
205 ? !curr_mb_frame_flag // bottom macroblock
206 : (!curr_mb_frame_flag && !top_mb_frame_flag) // top macroblock
208 top_xy -= s->mb_stride;
211 ? !curr_mb_frame_flag // bottom macroblock
212 : (!curr_mb_frame_flag && !topleft_mb_frame_flag) // top macroblock
214 topleft_xy -= s->mb_stride;
217 ? !curr_mb_frame_flag // bottom macroblock
218 : (!curr_mb_frame_flag && !topright_mb_frame_flag) // top macroblock
220 topright_xy -= s->mb_stride;
222 if (left_mb_frame_flag != curr_mb_frame_flag) {
223 left_xy[1] = left_xy[0] = pair_xy - 1;
224 if (curr_mb_frame_flag) {
245 left_xy[1] += s->mb_stride;
258 h->top_mb_xy = top_xy;
259 h->left_mb_xy[0] = left_xy[0];
260 h->left_mb_xy[1] = left_xy[1];
264 top_type = h->slice_table[top_xy ] < 255 ? s->current_picture.mb_type[top_xy] : 0;
265 left_type[0] = h->slice_table[left_xy[0] ] < 255 ? s->current_picture.mb_type[left_xy[0]] : 0;
266 left_type[1] = h->slice_table[left_xy[1] ] < 255 ? s->current_picture.mb_type[left_xy[1]] : 0;
268 if(FRAME_MBAFF && !IS_INTRA(mb_type)){
270 int v = *(uint16_t*)&h->non_zero_count[mb_xy][14];
272 h->non_zero_count_cache[scan8[i]] = (v>>i)&1;
273 for(list=0; list<h->list_count; list++){
274 if(USES_LIST(mb_type,list)){
275 uint32_t *src = (uint32_t*)s->current_picture.motion_val[list][h->mb2b_xy[mb_xy]];
276 uint32_t *dst = (uint32_t*)h->mv_cache[list][scan8[0]];
277 int8_t *ref = &s->current_picture.ref_index[list][h->mb2b8_xy[mb_xy]];
278 for(i=0; i<4; i++, dst+=8, src+=h->b_stride){
284 *(uint32_t*)&h->ref_cache[list][scan8[ 0]] =
285 *(uint32_t*)&h->ref_cache[list][scan8[ 2]] = pack16to32(ref[0],ref[1])*0x0101;
287 *(uint32_t*)&h->ref_cache[list][scan8[ 8]] =
288 *(uint32_t*)&h->ref_cache[list][scan8[10]] = pack16to32(ref[0],ref[1])*0x0101;
290 fill_rectangle(&h-> mv_cache[list][scan8[ 0]], 4, 4, 8, 0, 4);
291 fill_rectangle(&h->ref_cache[list][scan8[ 0]], 4, 4, 8, (uint8_t)LIST_NOT_USED, 1);
296 topleft_type = h->slice_table[topleft_xy ] == h->slice_num ? s->current_picture.mb_type[topleft_xy] : 0;
297 top_type = h->slice_table[top_xy ] == h->slice_num ? s->current_picture.mb_type[top_xy] : 0;
298 topright_type= h->slice_table[topright_xy] == h->slice_num ? s->current_picture.mb_type[topright_xy]: 0;
299 left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0;
300 left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0;
303 if(IS_INTRA(mb_type)){
304 h->topleft_samples_available=
305 h->top_samples_available=
306 h->left_samples_available= 0xFFFF;
307 h->topright_samples_available= 0xEEEA;
309 if(!IS_INTRA(top_type) && (top_type==0 || h->pps.constrained_intra_pred)){
310 h->topleft_samples_available= 0xB3FF;
311 h->top_samples_available= 0x33FF;
312 h->topright_samples_available= 0x26EA;
315 if(!IS_INTRA(left_type[i]) && (left_type[i]==0 || h->pps.constrained_intra_pred)){
316 h->topleft_samples_available&= 0xDF5F;
317 h->left_samples_available&= 0x5F5F;
321 if(!IS_INTRA(topleft_type) && (topleft_type==0 || h->pps.constrained_intra_pred))
322 h->topleft_samples_available&= 0x7FFF;
324 if(!IS_INTRA(topright_type) && (topright_type==0 || h->pps.constrained_intra_pred))
325 h->topright_samples_available&= 0xFBFF;
327 if(IS_INTRA4x4(mb_type)){
328 if(IS_INTRA4x4(top_type)){
329 h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode[top_xy][4];
330 h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode[top_xy][5];
331 h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode[top_xy][6];
332 h->intra4x4_pred_mode_cache[7+8*0]= h->intra4x4_pred_mode[top_xy][3];
335 if(!top_type || (IS_INTER(top_type) && h->pps.constrained_intra_pred))
340 h->intra4x4_pred_mode_cache[4+8*0]=
341 h->intra4x4_pred_mode_cache[5+8*0]=
342 h->intra4x4_pred_mode_cache[6+8*0]=
343 h->intra4x4_pred_mode_cache[7+8*0]= pred;
346 if(IS_INTRA4x4(left_type[i])){
347 h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[0+2*i]];
348 h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[1+2*i]];
351 if(!left_type[i] || (IS_INTER(left_type[i]) && h->pps.constrained_intra_pred))
356 h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
357 h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred;
372 //FIXME constraint_intra_pred & partitioning & nnz (lets hope this is just a typo in the spec)
374 h->non_zero_count_cache[4+8*0]= h->non_zero_count[top_xy][4];
375 h->non_zero_count_cache[5+8*0]= h->non_zero_count[top_xy][5];
376 h->non_zero_count_cache[6+8*0]= h->non_zero_count[top_xy][6];
377 h->non_zero_count_cache[7+8*0]= h->non_zero_count[top_xy][3];
379 h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][9];
380 h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][8];
382 h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][12];
383 h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][11];
386 h->non_zero_count_cache[4+8*0]=
387 h->non_zero_count_cache[5+8*0]=
388 h->non_zero_count_cache[6+8*0]=
389 h->non_zero_count_cache[7+8*0]=
391 h->non_zero_count_cache[1+8*0]=
392 h->non_zero_count_cache[2+8*0]=
394 h->non_zero_count_cache[1+8*3]=
395 h->non_zero_count_cache[2+8*3]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
399 for (i=0; i<2; i++) {
401 h->non_zero_count_cache[3+8*1 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[0+2*i]];
402 h->non_zero_count_cache[3+8*2 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[1+2*i]];
403 h->non_zero_count_cache[0+8*1 + 8*i]= h->non_zero_count[left_xy[i]][left_block[4+2*i]];
404 h->non_zero_count_cache[0+8*4 + 8*i]= h->non_zero_count[left_xy[i]][left_block[5+2*i]];
406 h->non_zero_count_cache[3+8*1 + 2*8*i]=
407 h->non_zero_count_cache[3+8*2 + 2*8*i]=
408 h->non_zero_count_cache[0+8*1 + 8*i]=
409 h->non_zero_count_cache[0+8*4 + 8*i]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64;
416 h->top_cbp = h->cbp_table[top_xy];
417 } else if(IS_INTRA(mb_type)) {
424 h->left_cbp = h->cbp_table[left_xy[0]] & 0x1f0;
425 } else if(IS_INTRA(mb_type)) {
431 h->left_cbp |= ((h->cbp_table[left_xy[0]]>>((left_block[0]&(~1))+1))&0x1) << 1;
434 h->left_cbp |= ((h->cbp_table[left_xy[1]]>>((left_block[2]&(~1))+1))&0x1) << 3;
439 if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
441 for(list=0; list<h->list_count; list++){
442 if(!USES_LIST(mb_type, list) && !IS_DIRECT(mb_type) && !h->deblocking_filter){
443 /*if(!h->mv_cache_clean[list]){
444 memset(h->mv_cache [list], 0, 8*5*2*sizeof(int16_t)); //FIXME clean only input? clean at all?
445 memset(h->ref_cache[list], PART_NOT_AVAILABLE, 8*5*sizeof(int8_t));
446 h->mv_cache_clean[list]= 1;
450 h->mv_cache_clean[list]= 0;
452 if(USES_LIST(top_type, list)){
453 const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
454 const int b8_xy= h->mb2b8_xy[top_xy] + h->b8_stride;
455 *(uint32_t*)h->mv_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 0];
456 *(uint32_t*)h->mv_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 1];
457 *(uint32_t*)h->mv_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 2];
458 *(uint32_t*)h->mv_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 3];
459 h->ref_cache[list][scan8[0] + 0 - 1*8]=
460 h->ref_cache[list][scan8[0] + 1 - 1*8]= s->current_picture.ref_index[list][b8_xy + 0];
461 h->ref_cache[list][scan8[0] + 2 - 1*8]=
462 h->ref_cache[list][scan8[0] + 3 - 1*8]= s->current_picture.ref_index[list][b8_xy + 1];
464 *(uint32_t*)h->mv_cache [list][scan8[0] + 0 - 1*8]=
465 *(uint32_t*)h->mv_cache [list][scan8[0] + 1 - 1*8]=
466 *(uint32_t*)h->mv_cache [list][scan8[0] + 2 - 1*8]=
467 *(uint32_t*)h->mv_cache [list][scan8[0] + 3 - 1*8]= 0;
468 *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101;
472 int cache_idx = scan8[0] - 1 + i*2*8;
473 if(USES_LIST(left_type[i], list)){
474 const int b_xy= h->mb2b_xy[left_xy[i]] + 3;
475 const int b8_xy= h->mb2b8_xy[left_xy[i]] + 1;
476 *(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]];
477 *(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]];
478 h->ref_cache[list][cache_idx ]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[0+i*2]>>1)];
479 h->ref_cache[list][cache_idx+8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[1+i*2]>>1)];
481 *(uint32_t*)h->mv_cache [list][cache_idx ]=
482 *(uint32_t*)h->mv_cache [list][cache_idx+8]= 0;
483 h->ref_cache[list][cache_idx ]=
484 h->ref_cache[list][cache_idx+8]= left_type[i] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
488 if((for_deblock || (IS_DIRECT(mb_type) && !h->direct_spatial_mv_pred)) && !FRAME_MBAFF)
491 if(USES_LIST(topleft_type, list)){
492 const int b_xy = h->mb2b_xy[topleft_xy] + 3 + 3*h->b_stride;
493 const int b8_xy= h->mb2b8_xy[topleft_xy] + 1 + h->b8_stride;
494 *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
495 h->ref_cache[list][scan8[0] - 1 - 1*8]= s->current_picture.ref_index[list][b8_xy];
497 *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= 0;
498 h->ref_cache[list][scan8[0] - 1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
501 if(USES_LIST(topright_type, list)){
502 const int b_xy= h->mb2b_xy[topright_xy] + 3*h->b_stride;
503 const int b8_xy= h->mb2b8_xy[topright_xy] + h->b8_stride;
504 *(uint32_t*)h->mv_cache[list][scan8[0] + 4 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy];
505 h->ref_cache[list][scan8[0] + 4 - 1*8]= s->current_picture.ref_index[list][b8_xy];
507 *(uint32_t*)h->mv_cache [list][scan8[0] + 4 - 1*8]= 0;
508 h->ref_cache[list][scan8[0] + 4 - 1*8]= topright_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
511 if((IS_SKIP(mb_type) || IS_DIRECT(mb_type)) && !FRAME_MBAFF)
514 h->ref_cache[list][scan8[5 ]+1] =
515 h->ref_cache[list][scan8[7 ]+1] =
516 h->ref_cache[list][scan8[13]+1] = //FIXME remove past 3 (init somewhere else)
517 h->ref_cache[list][scan8[4 ]] =
518 h->ref_cache[list][scan8[12]] = PART_NOT_AVAILABLE;
519 *(uint32_t*)h->mv_cache [list][scan8[5 ]+1]=
520 *(uint32_t*)h->mv_cache [list][scan8[7 ]+1]=
521 *(uint32_t*)h->mv_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
522 *(uint32_t*)h->mv_cache [list][scan8[4 ]]=
523 *(uint32_t*)h->mv_cache [list][scan8[12]]= 0;
526 /* XXX beurk, Load mvd */
527 if(USES_LIST(top_type, list)){
528 const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
529 *(uint32_t*)h->mvd_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 0];
530 *(uint32_t*)h->mvd_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 1];
531 *(uint32_t*)h->mvd_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 2];
532 *(uint32_t*)h->mvd_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 3];
534 *(uint32_t*)h->mvd_cache [list][scan8[0] + 0 - 1*8]=
535 *(uint32_t*)h->mvd_cache [list][scan8[0] + 1 - 1*8]=
536 *(uint32_t*)h->mvd_cache [list][scan8[0] + 2 - 1*8]=
537 *(uint32_t*)h->mvd_cache [list][scan8[0] + 3 - 1*8]= 0;
539 if(USES_LIST(left_type[0], list)){
540 const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
541 *(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]];
542 *(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]];
544 *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 0*8]=
545 *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 1*8]= 0;
547 if(USES_LIST(left_type[1], list)){
548 const int b_xy= h->mb2b_xy[left_xy[1]] + 3;
549 *(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]];
550 *(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]];
552 *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 2*8]=
553 *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 3*8]= 0;
555 *(uint32_t*)h->mvd_cache [list][scan8[5 ]+1]=
556 *(uint32_t*)h->mvd_cache [list][scan8[7 ]+1]=
557 *(uint32_t*)h->mvd_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewhere else)
558 *(uint32_t*)h->mvd_cache [list][scan8[4 ]]=
559 *(uint32_t*)h->mvd_cache [list][scan8[12]]= 0;
561 if(h->slice_type == B_TYPE){
562 fill_rectangle(&h->direct_cache[scan8[0]], 4, 4, 8, 0, 1);
564 if(IS_DIRECT(top_type)){
565 *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0x01010101;
566 }else if(IS_8X8(top_type)){
567 int b8_xy = h->mb2b8_xy[top_xy] + h->b8_stride;
568 h->direct_cache[scan8[0] + 0 - 1*8]= h->direct_table[b8_xy];
569 h->direct_cache[scan8[0] + 2 - 1*8]= h->direct_table[b8_xy + 1];
571 *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0;
574 if(IS_DIRECT(left_type[0]))
575 h->direct_cache[scan8[0] - 1 + 0*8]= 1;
576 else if(IS_8X8(left_type[0]))
577 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)];
579 h->direct_cache[scan8[0] - 1 + 0*8]= 0;
581 if(IS_DIRECT(left_type[1]))
582 h->direct_cache[scan8[0] - 1 + 2*8]= 1;
583 else if(IS_8X8(left_type[1]))
584 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)];
586 h->direct_cache[scan8[0] - 1 + 2*8]= 0;
592 MAP_F2F(scan8[0] - 1 - 1*8, topleft_type)\
593 MAP_F2F(scan8[0] + 0 - 1*8, top_type)\
594 MAP_F2F(scan8[0] + 1 - 1*8, top_type)\
595 MAP_F2F(scan8[0] + 2 - 1*8, top_type)\
596 MAP_F2F(scan8[0] + 3 - 1*8, top_type)\
597 MAP_F2F(scan8[0] + 4 - 1*8, topright_type)\
598 MAP_F2F(scan8[0] - 1 + 0*8, left_type[0])\
599 MAP_F2F(scan8[0] - 1 + 1*8, left_type[0])\
600 MAP_F2F(scan8[0] - 1 + 2*8, left_type[1])\
601 MAP_F2F(scan8[0] - 1 + 3*8, left_type[1])
603 #define MAP_F2F(idx, mb_type)\
604 if(!IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
605 h->ref_cache[list][idx] <<= 1;\
606 h->mv_cache[list][idx][1] /= 2;\
607 h->mvd_cache[list][idx][1] /= 2;\
612 #define MAP_F2F(idx, mb_type)\
613 if(IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
614 h->ref_cache[list][idx] >>= 1;\
615 h->mv_cache[list][idx][1] <<= 1;\
616 h->mvd_cache[list][idx][1] <<= 1;\
626 h->neighbor_transform_size= !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[0]);
629 static inline void write_back_intra_pred_mode(H264Context *h){
630 MpegEncContext * const s = &h->s;
631 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
633 h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1];
634 h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2];
635 h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3];
636 h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4];
637 h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4];
638 h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4];
639 h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4];
643 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
645 static inline int check_intra4x4_pred_mode(H264Context *h){
646 MpegEncContext * const s = &h->s;
647 static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
648 static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
651 if(!(h->top_samples_available&0x8000)){
653 int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
655 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);
658 h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
663 if(!(h->left_samples_available&0x8000)){
665 int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
667 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);
670 h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
676 } //FIXME cleanup like next
679 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
681 static inline int check_intra_pred_mode(H264Context *h, int mode){
682 MpegEncContext * const s = &h->s;
683 static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
684 static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
687 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);
691 if(!(h->top_samples_available&0x8000)){
694 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);
699 if(!(h->left_samples_available&0x8000)){
702 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);
711 * gets the predicted intra4x4 prediction mode.
713 static inline int pred_intra_mode(H264Context *h, int n){
714 const int index8= scan8[n];
715 const int left= h->intra4x4_pred_mode_cache[index8 - 1];
716 const int top = h->intra4x4_pred_mode_cache[index8 - 8];
717 const int min= FFMIN(left, top);
719 tprintf(h->s.avctx, "mode:%d %d min:%d\n", left ,top, min);
721 if(min<0) return DC_PRED;
725 static inline void write_back_non_zero_count(H264Context *h){
726 MpegEncContext * const s = &h->s;
727 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
729 h->non_zero_count[mb_xy][0]= h->non_zero_count_cache[7+8*1];
730 h->non_zero_count[mb_xy][1]= h->non_zero_count_cache[7+8*2];
731 h->non_zero_count[mb_xy][2]= h->non_zero_count_cache[7+8*3];
732 h->non_zero_count[mb_xy][3]= h->non_zero_count_cache[7+8*4];
733 h->non_zero_count[mb_xy][4]= h->non_zero_count_cache[4+8*4];
734 h->non_zero_count[mb_xy][5]= h->non_zero_count_cache[5+8*4];
735 h->non_zero_count[mb_xy][6]= h->non_zero_count_cache[6+8*4];
737 h->non_zero_count[mb_xy][9]= h->non_zero_count_cache[1+8*2];
738 h->non_zero_count[mb_xy][8]= h->non_zero_count_cache[2+8*2];
739 h->non_zero_count[mb_xy][7]= h->non_zero_count_cache[2+8*1];
741 h->non_zero_count[mb_xy][12]=h->non_zero_count_cache[1+8*5];
742 h->non_zero_count[mb_xy][11]=h->non_zero_count_cache[2+8*5];
743 h->non_zero_count[mb_xy][10]=h->non_zero_count_cache[2+8*4];
746 // store all luma nnzs, for deblocking
749 v += (!!h->non_zero_count_cache[scan8[i]]) << i;
750 *(uint16_t*)&h->non_zero_count[mb_xy][14] = v;
755 * gets the predicted number of non zero coefficients.
756 * @param n block index
758 static inline int pred_non_zero_count(H264Context *h, int n){
759 const int index8= scan8[n];
760 const int left= h->non_zero_count_cache[index8 - 1];
761 const int top = h->non_zero_count_cache[index8 - 8];
764 if(i<64) i= (i+1)>>1;
766 tprintf(h->s.avctx, "pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31);
771 static inline int fetch_diagonal_mv(H264Context *h, const int16_t **C, int i, int list, int part_width){
772 const int topright_ref= h->ref_cache[list][ i - 8 + part_width ];
773 MpegEncContext *s = &h->s;
775 /* there is no consistent mapping of mvs to neighboring locations that will
776 * make mbaff happy, so we can't move all this logic to fill_caches */
778 const uint32_t *mb_types = s->current_picture_ptr->mb_type;
780 *(uint32_t*)h->mv_cache[list][scan8[0]-2] = 0;
781 *C = h->mv_cache[list][scan8[0]-2];
784 && (s->mb_y&1) && i < scan8[0]+8 && topright_ref != PART_NOT_AVAILABLE){
785 int topright_xy = s->mb_x + (s->mb_y-1)*s->mb_stride + (i == scan8[0]+3);
786 if(IS_INTERLACED(mb_types[topright_xy])){
787 #define SET_DIAG_MV(MV_OP, REF_OP, X4, Y4)\
788 const int x4 = X4, y4 = Y4;\
789 const int mb_type = mb_types[(x4>>2)+(y4>>2)*s->mb_stride];\
790 if(!USES_LIST(mb_type,list) && !IS_8X8(mb_type))\
791 return LIST_NOT_USED;\
792 mv = s->current_picture_ptr->motion_val[list][x4 + y4*h->b_stride];\
793 h->mv_cache[list][scan8[0]-2][0] = mv[0];\
794 h->mv_cache[list][scan8[0]-2][1] = mv[1] MV_OP;\
795 return s->current_picture_ptr->ref_index[list][(x4>>1) + (y4>>1)*h->b8_stride] REF_OP;
797 SET_DIAG_MV(*2, >>1, s->mb_x*4+(i&7)-4+part_width, s->mb_y*4-1);
800 if(topright_ref == PART_NOT_AVAILABLE
801 && ((s->mb_y&1) || i >= scan8[0]+8) && (i&7)==4
802 && h->ref_cache[list][scan8[0]-1] != PART_NOT_AVAILABLE){
804 && IS_INTERLACED(mb_types[h->left_mb_xy[0]])){
805 SET_DIAG_MV(*2, >>1, s->mb_x*4-1, (s->mb_y|1)*4+(s->mb_y&1)*2+(i>>4)-1);
808 && !IS_INTERLACED(mb_types[h->left_mb_xy[0]])
810 // leftshift will turn LIST_NOT_USED into PART_NOT_AVAILABLE, but that's ok.
811 SET_DIAG_MV(>>1, <<1, s->mb_x*4-1, (s->mb_y&~1)*4 - 1 + ((i-scan8[0])>>3)*2);
817 if(topright_ref != PART_NOT_AVAILABLE){
818 *C= h->mv_cache[list][ i - 8 + part_width ];
821 tprintf(s->avctx, "topright MV not available\n");
823 *C= h->mv_cache[list][ i - 8 - 1 ];
824 return h->ref_cache[list][ i - 8 - 1 ];
829 * gets the predicted MV.
830 * @param n the block index
831 * @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
832 * @param mx the x component of the predicted motion vector
833 * @param my the y component of the predicted motion vector
835 static inline void pred_motion(H264Context * const h, int n, int part_width, int list, int ref, int * const mx, int * const my){
836 const int index8= scan8[n];
837 const int top_ref= h->ref_cache[list][ index8 - 8 ];
838 const int left_ref= h->ref_cache[list][ index8 - 1 ];
839 const int16_t * const A= h->mv_cache[list][ index8 - 1 ];
840 const int16_t * const B= h->mv_cache[list][ index8 - 8 ];
842 int diagonal_ref, match_count;
844 assert(part_width==1 || part_width==2 || part_width==4);
854 diagonal_ref= fetch_diagonal_mv(h, &C, index8, list, part_width);
855 match_count= (diagonal_ref==ref) + (top_ref==ref) + (left_ref==ref);
856 tprintf(h->s.avctx, "pred_motion match_count=%d\n", match_count);
857 if(match_count > 1){ //most common
858 *mx= mid_pred(A[0], B[0], C[0]);
859 *my= mid_pred(A[1], B[1], C[1]);
860 }else if(match_count==1){
864 }else if(top_ref==ref){
872 if(top_ref == PART_NOT_AVAILABLE && diagonal_ref == PART_NOT_AVAILABLE && left_ref != PART_NOT_AVAILABLE){
876 *mx= mid_pred(A[0], B[0], C[0]);
877 *my= mid_pred(A[1], B[1], C[1]);
881 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);
885 * gets the directionally predicted 16x8 MV.
886 * @param n the block index
887 * @param mx the x component of the predicted motion vector
888 * @param my the y component of the predicted motion vector
890 static inline void pred_16x8_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
892 const int top_ref= h->ref_cache[list][ scan8[0] - 8 ];
893 const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];
895 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);
903 const int left_ref= h->ref_cache[list][ scan8[8] - 1 ];
904 const int16_t * const A= h->mv_cache[list][ scan8[8] - 1 ];
906 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);
916 pred_motion(h, n, 4, list, ref, mx, my);
920 * gets the directionally predicted 8x16 MV.
921 * @param n the block index
922 * @param mx the x component of the predicted motion vector
923 * @param my the y component of the predicted motion vector
925 static inline void pred_8x16_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
927 const int left_ref= h->ref_cache[list][ scan8[0] - 1 ];
928 const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ];
930 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);
941 diagonal_ref= fetch_diagonal_mv(h, &C, scan8[4], list, 2);
943 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);
945 if(diagonal_ref == ref){
953 pred_motion(h, n, 2, list, ref, mx, my);
956 static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my){
957 const int top_ref = h->ref_cache[0][ scan8[0] - 8 ];
958 const int left_ref= h->ref_cache[0][ scan8[0] - 1 ];
960 tprintf(h->s.avctx, "pred_pskip: (%d) (%d) at %2d %2d\n", top_ref, left_ref, h->s.mb_x, h->s.mb_y);
962 if(top_ref == PART_NOT_AVAILABLE || left_ref == PART_NOT_AVAILABLE
963 || (top_ref == 0 && *(uint32_t*)h->mv_cache[0][ scan8[0] - 8 ] == 0)
964 || (left_ref == 0 && *(uint32_t*)h->mv_cache[0][ scan8[0] - 1 ] == 0)){
970 pred_motion(h, 0, 4, 0, 0, mx, my);
975 static inline void direct_dist_scale_factor(H264Context * const h){
976 const int poc = h->s.current_picture_ptr->poc;
977 const int poc1 = h->ref_list[1][0].poc;
979 for(i=0; i<h->ref_count[0]; i++){
980 int poc0 = h->ref_list[0][i].poc;
981 int td = av_clip(poc1 - poc0, -128, 127);
982 if(td == 0 /* FIXME || pic0 is a long-term ref */){
983 h->dist_scale_factor[i] = 256;
985 int tb = av_clip(poc - poc0, -128, 127);
986 int tx = (16384 + (FFABS(td) >> 1)) / td;
987 h->dist_scale_factor[i] = av_clip((tb*tx + 32) >> 6, -1024, 1023);
991 for(i=0; i<h->ref_count[0]; i++){
992 h->dist_scale_factor_field[2*i] =
993 h->dist_scale_factor_field[2*i+1] = h->dist_scale_factor[i];
997 static inline void direct_ref_list_init(H264Context * const h){
998 MpegEncContext * const s = &h->s;
999 Picture * const ref1 = &h->ref_list[1][0];
1000 Picture * const cur = s->current_picture_ptr;
1002 if(cur->pict_type == I_TYPE)
1003 cur->ref_count[0] = 0;
1004 if(cur->pict_type != B_TYPE)
1005 cur->ref_count[1] = 0;
1006 for(list=0; list<2; list++){
1007 cur->ref_count[list] = h->ref_count[list];
1008 for(j=0; j<h->ref_count[list]; j++)
1009 cur->ref_poc[list][j] = h->ref_list[list][j].poc;
1011 if(cur->pict_type != B_TYPE || h->direct_spatial_mv_pred)
1013 for(list=0; list<2; list++){
1014 for(i=0; i<ref1->ref_count[list]; i++){
1015 const int poc = ref1->ref_poc[list][i];
1016 h->map_col_to_list0[list][i] = 0; /* bogus; fills in for missing frames */
1017 for(j=0; j<h->ref_count[list]; j++)
1018 if(h->ref_list[list][j].poc == poc){
1019 h->map_col_to_list0[list][i] = j;
1025 for(list=0; list<2; list++){
1026 for(i=0; i<ref1->ref_count[list]; i++){
1027 j = h->map_col_to_list0[list][i];
1028 h->map_col_to_list0_field[list][2*i] = 2*j;
1029 h->map_col_to_list0_field[list][2*i+1] = 2*j+1;
1035 static inline void pred_direct_motion(H264Context * const h, int *mb_type){
1036 MpegEncContext * const s = &h->s;
1037 const int mb_xy = s->mb_x + s->mb_y*s->mb_stride;
1038 const int b8_xy = 2*s->mb_x + 2*s->mb_y*h->b8_stride;
1039 const int b4_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
1040 const int mb_type_col = h->ref_list[1][0].mb_type[mb_xy];
1041 const int16_t (*l1mv0)[2] = (const int16_t (*)[2]) &h->ref_list[1][0].motion_val[0][b4_xy];
1042 const int16_t (*l1mv1)[2] = (const int16_t (*)[2]) &h->ref_list[1][0].motion_val[1][b4_xy];
1043 const int8_t *l1ref0 = &h->ref_list[1][0].ref_index[0][b8_xy];
1044 const int8_t *l1ref1 = &h->ref_list[1][0].ref_index[1][b8_xy];
1045 const int is_b8x8 = IS_8X8(*mb_type);
1046 unsigned int sub_mb_type;
1049 #define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM)
1050 if(IS_8X8(mb_type_col) && !h->sps.direct_8x8_inference_flag){
1051 /* FIXME save sub mb types from previous frames (or derive from MVs)
1052 * so we know exactly what block size to use */
1053 sub_mb_type = MB_TYPE_8x8|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_4x4 */
1054 *mb_type = MB_TYPE_8x8|MB_TYPE_L0L1;
1055 }else if(!is_b8x8 && (mb_type_col & MB_TYPE_16x16_OR_INTRA)){
1056 sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1057 *mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_16x16 */
1059 sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
1060 *mb_type = MB_TYPE_8x8|MB_TYPE_L0L1;
1063 *mb_type |= MB_TYPE_DIRECT2;
1065 *mb_type |= MB_TYPE_INTERLACED;
1067 tprintf(s->avctx, "mb_type = %08x, sub_mb_type = %08x, is_b8x8 = %d, mb_type_col = %08x\n", *mb_type, sub_mb_type, is_b8x8, mb_type_col);
1069 if(h->direct_spatial_mv_pred){
1074 /* FIXME interlacing + spatial direct uses wrong colocated block positions */
1076 /* ref = min(neighbors) */
1077 for(list=0; list<2; list++){
1078 int refa = h->ref_cache[list][scan8[0] - 1];
1079 int refb = h->ref_cache[list][scan8[0] - 8];
1080 int refc = h->ref_cache[list][scan8[0] - 8 + 4];
1082 refc = h->ref_cache[list][scan8[0] - 8 - 1];
1084 if(ref[list] < 0 || (refb < ref[list] && refb >= 0))
1086 if(ref[list] < 0 || (refc < ref[list] && refc >= 0))
1092 if(ref[0] < 0 && ref[1] < 0){
1093 ref[0] = ref[1] = 0;
1094 mv[0][0] = mv[0][1] =
1095 mv[1][0] = mv[1][1] = 0;
1097 for(list=0; list<2; list++){
1099 pred_motion(h, 0, 4, list, ref[list], &mv[list][0], &mv[list][1]);
1101 mv[list][0] = mv[list][1] = 0;
1106 *mb_type &= ~MB_TYPE_P0L1;
1107 sub_mb_type &= ~MB_TYPE_P0L1;
1108 }else if(ref[0] < 0){
1109 *mb_type &= ~MB_TYPE_P0L0;
1110 sub_mb_type &= ~MB_TYPE_P0L0;
1113 if(IS_16X16(*mb_type)){
1116 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
1117 fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
1118 if(!IS_INTRA(mb_type_col)
1119 && ( (l1ref0[0] == 0 && FFABS(l1mv0[0][0]) <= 1 && FFABS(l1mv0[0][1]) <= 1)
1120 || (l1ref0[0] < 0 && l1ref1[0] == 0 && FFABS(l1mv1[0][0]) <= 1 && FFABS(l1mv1[0][1]) <= 1
1121 && (h->x264_build>33 || !h->x264_build)))){
1123 a= pack16to32(mv[0][0],mv[0][1]);
1125 b= pack16to32(mv[1][0],mv[1][1]);
1127 a= pack16to32(mv[0][0],mv[0][1]);
1128 b= pack16to32(mv[1][0],mv[1][1]);
1130 fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4);
1131 fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4);
1133 for(i8=0; i8<4; i8++){
1134 const int x8 = i8&1;
1135 const int y8 = i8>>1;
1137 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1139 h->sub_mb_type[i8] = sub_mb_type;
1141 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mv[0][0],mv[0][1]), 4);
1142 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mv[1][0],mv[1][1]), 4);
1143 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
1144 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
1147 if(!IS_INTRA(mb_type_col) && ( l1ref0[x8 + y8*h->b8_stride] == 0
1148 || (l1ref0[x8 + y8*h->b8_stride] < 0 && l1ref1[x8 + y8*h->b8_stride] == 0
1149 && (h->x264_build>33 || !h->x264_build)))){
1150 const int16_t (*l1mv)[2]= l1ref0[x8 + y8*h->b8_stride] == 0 ? l1mv0 : l1mv1;
1151 if(IS_SUB_8X8(sub_mb_type)){
1152 const int16_t *mv_col = l1mv[x8*3 + y8*3*h->b_stride];
1153 if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
1155 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1157 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1160 for(i4=0; i4<4; i4++){
1161 const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*h->b_stride];
1162 if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
1164 *(uint32_t*)h->mv_cache[0][scan8[i8*4+i4]] = 0;
1166 *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] = 0;
1172 }else{ /* direct temporal mv pred */
1173 const int *map_col_to_list0[2] = {h->map_col_to_list0[0], h->map_col_to_list0[1]};
1174 const int *dist_scale_factor = h->dist_scale_factor;
1177 if(IS_INTERLACED(*mb_type)){
1178 map_col_to_list0[0] = h->map_col_to_list0_field[0];
1179 map_col_to_list0[1] = h->map_col_to_list0_field[1];
1180 dist_scale_factor = h->dist_scale_factor_field;
1182 if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col)){
1183 /* FIXME assumes direct_8x8_inference == 1 */
1184 const int pair_xy = s->mb_x + (s->mb_y&~1)*s->mb_stride;
1185 int mb_types_col[2];
1188 *mb_type = MB_TYPE_8x8|MB_TYPE_L0L1
1189 | (is_b8x8 ? 0 : MB_TYPE_DIRECT2)
1190 | (*mb_type & MB_TYPE_INTERLACED);
1191 sub_mb_type = MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2|MB_TYPE_16x16;
1193 if(IS_INTERLACED(*mb_type)){
1194 /* frame to field scaling */
1195 mb_types_col[0] = h->ref_list[1][0].mb_type[pair_xy];
1196 mb_types_col[1] = h->ref_list[1][0].mb_type[pair_xy+s->mb_stride];
1198 l1ref0 -= 2*h->b8_stride;
1199 l1ref1 -= 2*h->b8_stride;
1200 l1mv0 -= 4*h->b_stride;
1201 l1mv1 -= 4*h->b_stride;
1205 if( (mb_types_col[0] & MB_TYPE_16x16_OR_INTRA)
1206 && (mb_types_col[1] & MB_TYPE_16x16_OR_INTRA)
1208 *mb_type |= MB_TYPE_16x8;
1210 *mb_type |= MB_TYPE_8x8;
1212 /* field to frame scaling */
1213 /* col_mb_y = (mb_y&~1) + (topAbsDiffPOC < bottomAbsDiffPOC ? 0 : 1)
1214 * but in MBAFF, top and bottom POC are equal */
1215 int dy = (s->mb_y&1) ? 1 : 2;
1217 mb_types_col[1] = h->ref_list[1][0].mb_type[pair_xy+s->mb_stride];
1218 l1ref0 += dy*h->b8_stride;
1219 l1ref1 += dy*h->b8_stride;
1220 l1mv0 += 2*dy*h->b_stride;
1221 l1mv1 += 2*dy*h->b_stride;
1224 if((mb_types_col[0] & (MB_TYPE_16x16_OR_INTRA|MB_TYPE_16x8))
1226 *mb_type |= MB_TYPE_16x16;
1228 *mb_type |= MB_TYPE_8x8;
1231 for(i8=0; i8<4; i8++){
1232 const int x8 = i8&1;
1233 const int y8 = i8>>1;
1235 const int16_t (*l1mv)[2]= l1mv0;
1237 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1239 h->sub_mb_type[i8] = sub_mb_type;
1241 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1242 if(IS_INTRA(mb_types_col[y8])){
1243 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
1244 fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1245 fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1249 ref0 = l1ref0[x8 + (y8*2>>y_shift)*h->b8_stride];
1251 ref0 = map_col_to_list0[0][ref0*2>>y_shift];
1253 ref0 = map_col_to_list0[1][l1ref1[x8 + (y8*2>>y_shift)*h->b8_stride]*2>>y_shift];
1256 scale = dist_scale_factor[ref0];
1257 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
1260 const int16_t *mv_col = l1mv[x8*3 + (y8*6>>y_shift)*h->b_stride];
1261 int my_col = (mv_col[1]<<y_shift)/2;
1262 int mx = (scale * mv_col[0] + 128) >> 8;
1263 int my = (scale * my_col + 128) >> 8;
1264 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
1265 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-my_col), 4);
1272 /* one-to-one mv scaling */
1274 if(IS_16X16(*mb_type)){
1277 fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, 0, 1);
1278 if(IS_INTRA(mb_type_col)){
1281 const int ref0 = l1ref0[0] >= 0 ? map_col_to_list0[0][l1ref0[0]]
1282 : map_col_to_list0[1][l1ref1[0]];
1283 const int scale = dist_scale_factor[ref0];
1284 const int16_t *mv_col = l1ref0[0] >= 0 ? l1mv0[0] : l1mv1[0];
1286 mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
1287 mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
1289 mv0= pack16to32(mv_l0[0],mv_l0[1]);
1290 mv1= pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
1292 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
1293 fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, mv0, 4);
1294 fill_rectangle(&h-> mv_cache[1][scan8[0]], 4, 4, 8, mv1, 4);
1296 for(i8=0; i8<4; i8++){
1297 const int x8 = i8&1;
1298 const int y8 = i8>>1;
1300 const int16_t (*l1mv)[2]= l1mv0;
1302 if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
1304 h->sub_mb_type[i8] = sub_mb_type;
1305 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
1306 if(IS_INTRA(mb_type_col)){
1307 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
1308 fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
1309 fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
1313 ref0 = l1ref0[x8 + y8*h->b8_stride];
1315 ref0 = map_col_to_list0[0][ref0];
1317 ref0 = map_col_to_list0[1][l1ref1[x8 + y8*h->b8_stride]];
1320 scale = dist_scale_factor[ref0];
1322 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
1323 if(IS_SUB_8X8(sub_mb_type)){
1324 const int16_t *mv_col = l1mv[x8*3 + y8*3*h->b_stride];
1325 int mx = (scale * mv_col[0] + 128) >> 8;
1326 int my = (scale * mv_col[1] + 128) >> 8;
1327 fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
1328 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-mv_col[1]), 4);
1330 for(i4=0; i4<4; i4++){
1331 const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*h->b_stride];
1332 int16_t *mv_l0 = h->mv_cache[0][scan8[i8*4+i4]];
1333 mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
1334 mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
1335 *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] =
1336 pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
1343 static inline void write_back_motion(H264Context *h, int mb_type){
1344 MpegEncContext * const s = &h->s;
1345 const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
1346 const int b8_xy= 2*s->mb_x + 2*s->mb_y*h->b8_stride;
1349 if(!USES_LIST(mb_type, 0))
1350 fill_rectangle(&s->current_picture.ref_index[0][b8_xy], 2, 2, h->b8_stride, (uint8_t)LIST_NOT_USED, 1);
1352 for(list=0; list<h->list_count; list++){
1354 if(!USES_LIST(mb_type, list))
1358 *(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];
1359 *(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];
1361 if( h->pps.cabac ) {
1362 if(IS_SKIP(mb_type))
1363 fill_rectangle(h->mvd_table[list][b_xy], 4, 4, h->b_stride, 0, 4);
1366 *(uint64_t*)h->mvd_table[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+0 + 8*y];
1367 *(uint64_t*)h->mvd_table[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+2 + 8*y];
1372 int8_t *ref_index = &s->current_picture.ref_index[list][b8_xy];
1373 ref_index[0+0*h->b8_stride]= h->ref_cache[list][scan8[0]];
1374 ref_index[1+0*h->b8_stride]= h->ref_cache[list][scan8[4]];
1375 ref_index[0+1*h->b8_stride]= h->ref_cache[list][scan8[8]];
1376 ref_index[1+1*h->b8_stride]= h->ref_cache[list][scan8[12]];
1380 if(h->slice_type == B_TYPE && h->pps.cabac){
1381 if(IS_8X8(mb_type)){
1382 uint8_t *direct_table = &h->direct_table[b8_xy];
1383 direct_table[1+0*h->b8_stride] = IS_DIRECT(h->sub_mb_type[1]) ? 1 : 0;
1384 direct_table[0+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[2]) ? 1 : 0;
1385 direct_table[1+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[3]) ? 1 : 0;
1391 * Decodes a network abstraction layer unit.
1392 * @param consumed is the number of bytes used as input
1393 * @param length is the length of the array
1394 * @param dst_length is the number of decoded bytes FIXME here or a decode rbsp tailing?
1395 * @returns decoded bytes, might be src+1 if no escapes
1397 static uint8_t *decode_nal(H264Context *h, uint8_t *src, int *dst_length, int *consumed, int length){
1402 // src[0]&0x80; //forbidden bit
1403 h->nal_ref_idc= src[0]>>5;
1404 h->nal_unit_type= src[0]&0x1F;
1408 for(i=0; i<length; i++)
1409 printf("%2X ", src[i]);
1411 for(i=0; i+1<length; i+=2){
1412 if(src[i]) continue;
1413 if(i>0 && src[i-1]==0) i--;
1414 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
1416 /* startcode, so we must be past the end */
1423 if(i>=length-1){ //no escaped 0
1424 *dst_length= length;
1425 *consumed= length+1; //+1 for the header
1429 bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
1430 h->rbsp_buffer[bufidx]= av_fast_realloc(h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length);
1431 dst= h->rbsp_buffer[bufidx];
1437 //printf("decoding esc\n");
1440 //remove escapes (very rare 1:2^22)
1441 if(si+2<length && src[si]==0 && src[si+1]==0 && src[si+2]<=3){
1442 if(src[si+2]==3){ //escape
1447 }else //next start code
1451 dst[di++]= src[si++];
1455 *consumed= si + 1;//+1 for the header
1456 //FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
1461 * identifies the exact end of the bitstream
1462 * @return the length of the trailing, or 0 if damaged
1464 static int decode_rbsp_trailing(H264Context *h, uint8_t *src){
1468 tprintf(h->s.avctx, "rbsp trailing %X\n", v);
1478 * idct tranforms the 16 dc values and dequantize them.
1479 * @param qp quantization parameter
1481 static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
1484 int temp[16]; //FIXME check if this is a good idea
1485 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
1486 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1488 //memset(block, 64, 2*256);
1491 const int offset= y_offset[i];
1492 const int z0= block[offset+stride*0] + block[offset+stride*4];
1493 const int z1= block[offset+stride*0] - block[offset+stride*4];
1494 const int z2= block[offset+stride*1] - block[offset+stride*5];
1495 const int z3= block[offset+stride*1] + block[offset+stride*5];
1504 const int offset= x_offset[i];
1505 const int z0= temp[4*0+i] + temp[4*2+i];
1506 const int z1= temp[4*0+i] - temp[4*2+i];
1507 const int z2= temp[4*1+i] - temp[4*3+i];
1508 const int z3= temp[4*1+i] + temp[4*3+i];
1510 block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_resdual
1511 block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
1512 block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
1513 block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
1519 * dct tranforms the 16 dc values.
1520 * @param qp quantization parameter ??? FIXME
1522 static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
1523 // const int qmul= dequant_coeff[qp][0];
1525 int temp[16]; //FIXME check if this is a good idea
1526 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
1527 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
1530 const int offset= y_offset[i];
1531 const int z0= block[offset+stride*0] + block[offset+stride*4];
1532 const int z1= block[offset+stride*0] - block[offset+stride*4];
1533 const int z2= block[offset+stride*1] - block[offset+stride*5];
1534 const int z3= block[offset+stride*1] + block[offset+stride*5];
1543 const int offset= x_offset[i];
1544 const int z0= temp[4*0+i] + temp[4*2+i];
1545 const int z1= temp[4*0+i] - temp[4*2+i];
1546 const int z2= temp[4*1+i] - temp[4*3+i];
1547 const int z3= temp[4*1+i] + temp[4*3+i];
1549 block[stride*0 +offset]= (z0 + z3)>>1;
1550 block[stride*2 +offset]= (z1 + z2)>>1;
1551 block[stride*8 +offset]= (z1 - z2)>>1;
1552 block[stride*10+offset]= (z0 - z3)>>1;
1560 static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
1561 const int stride= 16*2;
1562 const int xStride= 16;
1565 a= block[stride*0 + xStride*0];
1566 b= block[stride*0 + xStride*1];
1567 c= block[stride*1 + xStride*0];
1568 d= block[stride*1 + xStride*1];
1575 block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
1576 block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
1577 block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
1578 block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
1582 static void chroma_dc_dct_c(DCTELEM *block){
1583 const int stride= 16*2;
1584 const int xStride= 16;
1587 a= block[stride*0 + xStride*0];
1588 b= block[stride*0 + xStride*1];
1589 c= block[stride*1 + xStride*0];
1590 d= block[stride*1 + xStride*1];
1597 block[stride*0 + xStride*0]= (a+c);
1598 block[stride*0 + xStride*1]= (e+b);
1599 block[stride*1 + xStride*0]= (a-c);
1600 block[stride*1 + xStride*1]= (e-b);
1605 * gets the chroma qp.
1607 static inline int get_chroma_qp(H264Context *h, int t, int qscale){
1608 return h->pps.chroma_qp_table[t][qscale & 0xff];
1611 //FIXME need to check that this does not overflow signed 32 bit for low qp, i am not sure, it's very close
1612 //FIXME check that gcc inlines this (and optimizes intra & separate_dc stuff away)
1613 static inline int quantize_c(DCTELEM *block, uint8_t *scantable, int qscale, int intra, int separate_dc){
1615 const int * const quant_table= quant_coeff[qscale];
1616 const int bias= intra ? (1<<QUANT_SHIFT)/3 : (1<<QUANT_SHIFT)/6;
1617 const unsigned int threshold1= (1<<QUANT_SHIFT) - bias - 1;
1618 const unsigned int threshold2= (threshold1<<1);
1624 const int dc_bias= intra ? (1<<(QUANT_SHIFT-2))/3 : (1<<(QUANT_SHIFT-2))/6;
1625 const unsigned int dc_threshold1= (1<<(QUANT_SHIFT-2)) - dc_bias - 1;
1626 const unsigned int dc_threshold2= (dc_threshold1<<1);
1628 int level= block[0]*quant_coeff[qscale+18][0];
1629 if(((unsigned)(level+dc_threshold1))>dc_threshold2){
1631 level= (dc_bias + level)>>(QUANT_SHIFT-2);
1634 level= (dc_bias - level)>>(QUANT_SHIFT-2);
1637 // last_non_zero = i;
1642 const int dc_bias= intra ? (1<<(QUANT_SHIFT+1))/3 : (1<<(QUANT_SHIFT+1))/6;
1643 const unsigned int dc_threshold1= (1<<(QUANT_SHIFT+1)) - dc_bias - 1;
1644 const unsigned int dc_threshold2= (dc_threshold1<<1);
1646 int level= block[0]*quant_table[0];
1647 if(((unsigned)(level+dc_threshold1))>dc_threshold2){
1649 level= (dc_bias + level)>>(QUANT_SHIFT+1);
1652 level= (dc_bias - level)>>(QUANT_SHIFT+1);
1655 // last_non_zero = i;
1668 const int j= scantable[i];
1669 int level= block[j]*quant_table[j];
1671 // if( bias+level >= (1<<(QMAT_SHIFT - 3))
1672 // || bias-level >= (1<<(QMAT_SHIFT - 3))){
1673 if(((unsigned)(level+threshold1))>threshold2){
1675 level= (bias + level)>>QUANT_SHIFT;
1678 level= (bias - level)>>QUANT_SHIFT;
1687 return last_non_zero;
1690 static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
1691 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1692 int src_x_offset, int src_y_offset,
1693 qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
1694 MpegEncContext * const s = &h->s;
1695 const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
1696 int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
1697 const int luma_xy= (mx&3) + ((my&3)<<2);
1698 uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
1699 uint8_t * src_cb, * src_cr;
1700 int extra_width= h->emu_edge_width;
1701 int extra_height= h->emu_edge_height;
1703 const int full_mx= mx>>2;
1704 const int full_my= my>>2;
1705 const int pic_width = 16*s->mb_width;
1706 const int pic_height = 16*s->mb_height >> MB_FIELD;
1708 if(!pic->data[0]) //FIXME this is unacceptable, some senseable error concealment must be done for missing reference frames
1711 if(mx&7) extra_width -= 3;
1712 if(my&7) extra_height -= 3;
1714 if( full_mx < 0-extra_width
1715 || full_my < 0-extra_height
1716 || full_mx + 16/*FIXME*/ > pic_width + extra_width
1717 || full_my + 16/*FIXME*/ > pic_height + extra_height){
1718 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);
1719 src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
1723 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
1725 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
1728 if(ENABLE_GRAY && s->flags&CODEC_FLAG_GRAY) return;
1731 // chroma offset when predicting from a field of opposite parity
1732 my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
1733 emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
1735 src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
1736 src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
1739 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);
1740 src_cb= s->edge_emu_buffer;
1742 chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
1745 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);
1746 src_cr= s->edge_emu_buffer;
1748 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
1751 static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
1752 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1753 int x_offset, int y_offset,
1754 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1755 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
1756 int list0, int list1){
1757 MpegEncContext * const s = &h->s;
1758 qpel_mc_func *qpix_op= qpix_put;
1759 h264_chroma_mc_func chroma_op= chroma_put;
1761 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
1762 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
1763 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
1764 x_offset += 8*s->mb_x;
1765 y_offset += 8*(s->mb_y >> MB_FIELD);
1768 Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
1769 mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
1770 dest_y, dest_cb, dest_cr, x_offset, y_offset,
1771 qpix_op, chroma_op);
1774 chroma_op= chroma_avg;
1778 Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
1779 mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
1780 dest_y, dest_cb, dest_cr, x_offset, y_offset,
1781 qpix_op, chroma_op);
1785 static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
1786 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1787 int x_offset, int y_offset,
1788 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1789 h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
1790 h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
1791 int list0, int list1){
1792 MpegEncContext * const s = &h->s;
1794 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
1795 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
1796 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
1797 x_offset += 8*s->mb_x;
1798 y_offset += 8*(s->mb_y >> MB_FIELD);
1801 /* don't optimize for luma-only case, since B-frames usually
1802 * use implicit weights => chroma too. */
1803 uint8_t *tmp_cb = s->obmc_scratchpad;
1804 uint8_t *tmp_cr = s->obmc_scratchpad + 8;
1805 uint8_t *tmp_y = s->obmc_scratchpad + 8*h->mb_uvlinesize;
1806 int refn0 = h->ref_cache[0][ scan8[n] ];
1807 int refn1 = h->ref_cache[1][ scan8[n] ];
1809 mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
1810 dest_y, dest_cb, dest_cr,
1811 x_offset, y_offset, qpix_put, chroma_put);
1812 mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
1813 tmp_y, tmp_cb, tmp_cr,
1814 x_offset, y_offset, qpix_put, chroma_put);
1816 if(h->use_weight == 2){
1817 int weight0 = h->implicit_weight[refn0][refn1];
1818 int weight1 = 64 - weight0;
1819 luma_weight_avg( dest_y, tmp_y, h-> mb_linesize, 5, weight0, weight1, 0);
1820 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
1821 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
1823 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
1824 h->luma_weight[0][refn0], h->luma_weight[1][refn1],
1825 h->luma_offset[0][refn0] + h->luma_offset[1][refn1]);
1826 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1827 h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0],
1828 h->chroma_offset[0][refn0][0] + h->chroma_offset[1][refn1][0]);
1829 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1830 h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1],
1831 h->chroma_offset[0][refn0][1] + h->chroma_offset[1][refn1][1]);
1834 int list = list1 ? 1 : 0;
1835 int refn = h->ref_cache[list][ scan8[n] ];
1836 Picture *ref= &h->ref_list[list][refn];
1837 mc_dir_part(h, ref, n, square, chroma_height, delta, list,
1838 dest_y, dest_cb, dest_cr, x_offset, y_offset,
1839 qpix_put, chroma_put);
1841 luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
1842 h->luma_weight[list][refn], h->luma_offset[list][refn]);
1843 if(h->use_weight_chroma){
1844 chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1845 h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]);
1846 chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
1847 h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]);
1852 static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
1853 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1854 int x_offset, int y_offset,
1855 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
1856 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
1857 h264_weight_func *weight_op, h264_biweight_func *weight_avg,
1858 int list0, int list1){
1859 if((h->use_weight==2 && list0 && list1
1860 && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32))
1861 || h->use_weight==1)
1862 mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
1863 x_offset, y_offset, qpix_put, chroma_put,
1864 weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
1866 mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
1867 x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
1870 static inline void prefetch_motion(H264Context *h, int list){
1871 /* fetch pixels for estimated mv 4 macroblocks ahead
1872 * optimized for 64byte cache lines */
1873 MpegEncContext * const s = &h->s;
1874 const int refn = h->ref_cache[list][scan8[0]];
1876 const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
1877 const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
1878 uint8_t **src= h->ref_list[list][refn].data;
1879 int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
1880 s->dsp.prefetch(src[0]+off, s->linesize, 4);
1881 off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
1882 s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
1886 static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
1887 qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
1888 qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
1889 h264_weight_func *weight_op, h264_biweight_func *weight_avg){
1890 MpegEncContext * const s = &h->s;
1891 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
1892 const int mb_type= s->current_picture.mb_type[mb_xy];
1894 assert(IS_INTER(mb_type));
1896 prefetch_motion(h, 0);
1898 if(IS_16X16(mb_type)){
1899 mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
1900 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
1901 &weight_op[0], &weight_avg[0],
1902 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1903 }else if(IS_16X8(mb_type)){
1904 mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
1905 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
1906 &weight_op[1], &weight_avg[1],
1907 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1908 mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
1909 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
1910 &weight_op[1], &weight_avg[1],
1911 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
1912 }else if(IS_8X16(mb_type)){
1913 mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
1914 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1915 &weight_op[2], &weight_avg[2],
1916 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
1917 mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
1918 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1919 &weight_op[2], &weight_avg[2],
1920 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
1924 assert(IS_8X8(mb_type));
1927 const int sub_mb_type= h->sub_mb_type[i];
1929 int x_offset= (i&1)<<2;
1930 int y_offset= (i&2)<<1;
1932 if(IS_SUB_8X8(sub_mb_type)){
1933 mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1934 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
1935 &weight_op[3], &weight_avg[3],
1936 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1937 }else if(IS_SUB_8X4(sub_mb_type)){
1938 mc_part(h, n , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1939 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
1940 &weight_op[4], &weight_avg[4],
1941 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1942 mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
1943 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
1944 &weight_op[4], &weight_avg[4],
1945 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1946 }else if(IS_SUB_4X8(sub_mb_type)){
1947 mc_part(h, n , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
1948 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1949 &weight_op[5], &weight_avg[5],
1950 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1951 mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
1952 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1953 &weight_op[5], &weight_avg[5],
1954 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1957 assert(IS_SUB_4X4(sub_mb_type));
1959 int sub_x_offset= x_offset + 2*(j&1);
1960 int sub_y_offset= y_offset + (j&2);
1961 mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
1962 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
1963 &weight_op[6], &weight_avg[6],
1964 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
1970 prefetch_motion(h, 1);
1973 static void decode_init_vlc(void){
1974 static int done = 0;
1980 init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5,
1981 &chroma_dc_coeff_token_len [0], 1, 1,
1982 &chroma_dc_coeff_token_bits[0], 1, 1, 1);
1985 init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17,
1986 &coeff_token_len [i][0], 1, 1,
1987 &coeff_token_bits[i][0], 1, 1, 1);
1991 init_vlc(&chroma_dc_total_zeros_vlc[i], CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4,
1992 &chroma_dc_total_zeros_len [i][0], 1, 1,
1993 &chroma_dc_total_zeros_bits[i][0], 1, 1, 1);
1995 for(i=0; i<15; i++){
1996 init_vlc(&total_zeros_vlc[i], TOTAL_ZEROS_VLC_BITS, 16,
1997 &total_zeros_len [i][0], 1, 1,
1998 &total_zeros_bits[i][0], 1, 1, 1);
2002 init_vlc(&run_vlc[i], RUN_VLC_BITS, 7,
2003 &run_len [i][0], 1, 1,
2004 &run_bits[i][0], 1, 1, 1);
2006 init_vlc(&run7_vlc, RUN7_VLC_BITS, 16,
2007 &run_len [6][0], 1, 1,
2008 &run_bits[6][0], 1, 1, 1);
2012 static void free_tables(H264Context *h){
2015 av_freep(&h->intra4x4_pred_mode);
2016 av_freep(&h->chroma_pred_mode_table);
2017 av_freep(&h->cbp_table);
2018 av_freep(&h->mvd_table[0]);
2019 av_freep(&h->mvd_table[1]);
2020 av_freep(&h->direct_table);
2021 av_freep(&h->non_zero_count);
2022 av_freep(&h->slice_table_base);
2023 h->slice_table= NULL;
2025 av_freep(&h->mb2b_xy);
2026 av_freep(&h->mb2b8_xy);
2028 for(i = 0; i < MAX_SPS_COUNT; i++)
2029 av_freep(h->sps_buffers + i);
2031 for(i = 0; i < MAX_PPS_COUNT; i++)
2032 av_freep(h->pps_buffers + i);
2034 for(i = 0; i < h->s.avctx->thread_count; i++) {
2035 hx = h->thread_context[i];
2037 av_freep(&hx->top_borders[1]);
2038 av_freep(&hx->top_borders[0]);
2039 av_freep(&hx->s.obmc_scratchpad);
2040 av_freep(&hx->s.allocated_edge_emu_buffer);
2044 static void init_dequant8_coeff_table(H264Context *h){
2046 const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
2047 h->dequant8_coeff[0] = h->dequant8_buffer[0];
2048 h->dequant8_coeff[1] = h->dequant8_buffer[1];
2050 for(i=0; i<2; i++ ){
2051 if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
2052 h->dequant8_coeff[1] = h->dequant8_buffer[0];
2056 for(q=0; q<52; q++){
2057 int shift = ff_div6[q];
2058 int idx = ff_rem6[q];
2060 h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
2061 ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
2062 h->pps.scaling_matrix8[i][x]) << shift;
2067 static void init_dequant4_coeff_table(H264Context *h){
2069 const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
2070 for(i=0; i<6; i++ ){
2071 h->dequant4_coeff[i] = h->dequant4_buffer[i];
2073 if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
2074 h->dequant4_coeff[i] = h->dequant4_buffer[j];
2081 for(q=0; q<52; q++){
2082 int shift = ff_div6[q] + 2;
2083 int idx = ff_rem6[q];
2085 h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
2086 ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
2087 h->pps.scaling_matrix4[i][x]) << shift;
2092 static void init_dequant_tables(H264Context *h){
2094 init_dequant4_coeff_table(h);
2095 if(h->pps.transform_8x8_mode)
2096 init_dequant8_coeff_table(h);
2097 if(h->sps.transform_bypass){
2100 h->dequant4_coeff[i][0][x] = 1<<6;
2101 if(h->pps.transform_8x8_mode)
2104 h->dequant8_coeff[i][0][x] = 1<<6;
2111 * needs width/height
2113 static int alloc_tables(H264Context *h){
2114 MpegEncContext * const s = &h->s;
2115 const int big_mb_num= s->mb_stride * (s->mb_height+1);
2118 CHECKED_ALLOCZ(h->intra4x4_pred_mode, big_mb_num * 8 * sizeof(uint8_t))
2120 CHECKED_ALLOCZ(h->non_zero_count , big_mb_num * 16 * sizeof(uint8_t))
2121 CHECKED_ALLOCZ(h->slice_table_base , (big_mb_num+s->mb_stride) * sizeof(uint8_t))
2122 CHECKED_ALLOCZ(h->cbp_table, big_mb_num * sizeof(uint16_t))
2124 if( h->pps.cabac ) {
2125 CHECKED_ALLOCZ(h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t))
2126 CHECKED_ALLOCZ(h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t));
2127 CHECKED_ALLOCZ(h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t));
2128 CHECKED_ALLOCZ(h->direct_table, 32*big_mb_num * sizeof(uint8_t));
2131 memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride) * sizeof(uint8_t));
2132 h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
2134 CHECKED_ALLOCZ(h->mb2b_xy , big_mb_num * sizeof(uint32_t));
2135 CHECKED_ALLOCZ(h->mb2b8_xy , big_mb_num * sizeof(uint32_t));
2136 for(y=0; y<s->mb_height; y++){
2137 for(x=0; x<s->mb_width; x++){
2138 const int mb_xy= x + y*s->mb_stride;
2139 const int b_xy = 4*x + 4*y*h->b_stride;
2140 const int b8_xy= 2*x + 2*y*h->b8_stride;
2142 h->mb2b_xy [mb_xy]= b_xy;
2143 h->mb2b8_xy[mb_xy]= b8_xy;
2147 s->obmc_scratchpad = NULL;
2149 if(!h->dequant4_coeff[0])
2150 init_dequant_tables(h);
2159 * Mimic alloc_tables(), but for every context thread.
2161 static void clone_tables(H264Context *dst, H264Context *src){
2162 dst->intra4x4_pred_mode = src->intra4x4_pred_mode;
2163 dst->non_zero_count = src->non_zero_count;
2164 dst->slice_table = src->slice_table;
2165 dst->cbp_table = src->cbp_table;
2166 dst->mb2b_xy = src->mb2b_xy;
2167 dst->mb2b8_xy = src->mb2b8_xy;
2168 dst->chroma_pred_mode_table = src->chroma_pred_mode_table;
2169 dst->mvd_table[0] = src->mvd_table[0];
2170 dst->mvd_table[1] = src->mvd_table[1];
2171 dst->direct_table = src->direct_table;
2173 dst->s.obmc_scratchpad = NULL;
2174 ff_h264_pred_init(&dst->hpc, src->s.codec_id);
2179 * Allocate buffers which are not shared amongst multiple threads.
2181 static int context_init(H264Context *h){
2182 MpegEncContext * const s = &h->s;
2184 CHECKED_ALLOCZ(h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t))
2185 CHECKED_ALLOCZ(h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t))
2187 // edge emu needs blocksize + filter length - 1 (=17x17 for halfpel / 21x21 for h264)
2188 CHECKED_ALLOCZ(s->allocated_edge_emu_buffer,
2189 (s->width+64)*2*21*2); //(width + edge + align)*interlaced*MBsize*tolerance
2190 s->edge_emu_buffer= s->allocated_edge_emu_buffer + (s->width+64)*2*21;
2193 return -1; // free_tables will clean up for us
2196 static void common_init(H264Context *h){
2197 MpegEncContext * const s = &h->s;
2199 s->width = s->avctx->width;
2200 s->height = s->avctx->height;
2201 s->codec_id= s->avctx->codec->id;
2203 ff_h264_pred_init(&h->hpc, s->codec_id);
2205 h->dequant_coeff_pps= -1;
2206 s->unrestricted_mv=1;
2207 s->decode=1; //FIXME
2209 memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
2210 memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
2213 static int decode_init(AVCodecContext *avctx){
2214 H264Context *h= avctx->priv_data;
2215 MpegEncContext * const s = &h->s;
2217 MPV_decode_defaults(s);
2222 s->out_format = FMT_H264;
2223 s->workaround_bugs= avctx->workaround_bugs;
2226 // s->decode_mb= ff_h263_decode_mb;
2227 s->quarter_sample = 1;
2229 avctx->pix_fmt= PIX_FMT_YUV420P;
2233 if(avctx->extradata_size > 0 && avctx->extradata &&
2234 *(char *)avctx->extradata == 1){
2241 h->thread_context[0] = h;
2245 static int frame_start(H264Context *h){
2246 MpegEncContext * const s = &h->s;
2249 if(MPV_frame_start(s, s->avctx) < 0)
2251 ff_er_frame_start(s);
2253 * MPV_frame_start uses pict_type to derive key_frame.
2254 * This is incorrect for H.264; IDR markings must be used.
2255 * Zero here; IDR markings per slice in frame or fields are OR'd in later.
2256 * See decode_nal_units().
2258 s->current_picture_ptr->key_frame= 0;
2260 assert(s->linesize && s->uvlinesize);
2262 for(i=0; i<16; i++){
2263 h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
2264 h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
2267 h->block_offset[16+i]=
2268 h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2269 h->block_offset[24+16+i]=
2270 h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
2273 /* can't be in alloc_tables because linesize isn't known there.
2274 * FIXME: redo bipred weight to not require extra buffer? */
2275 for(i = 0; i < s->avctx->thread_count; i++)
2276 if(!h->thread_context[i]->s.obmc_scratchpad)
2277 h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
2279 /* some macroblocks will be accessed before they're available */
2280 if(FRAME_MBAFF || s->avctx->thread_count > 1)
2281 memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(uint8_t));
2283 // s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
2287 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){
2288 MpegEncContext * const s = &h->s;
2292 src_cb -= uvlinesize;
2293 src_cr -= uvlinesize;
2295 // There are two lines saved, the line above the the top macroblock of a pair,
2296 // and the line above the bottom macroblock
2297 h->left_border[0]= h->top_borders[0][s->mb_x][15];
2298 for(i=1; i<17; i++){
2299 h->left_border[i]= src_y[15+i* linesize];
2302 *(uint64_t*)(h->top_borders[0][s->mb_x]+0)= *(uint64_t*)(src_y + 16*linesize);
2303 *(uint64_t*)(h->top_borders[0][s->mb_x]+8)= *(uint64_t*)(src_y +8+16*linesize);
2305 if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2306 h->left_border[17 ]= h->top_borders[0][s->mb_x][16+7];
2307 h->left_border[17+9]= h->top_borders[0][s->mb_x][24+7];
2309 h->left_border[i+17 ]= src_cb[7+i*uvlinesize];
2310 h->left_border[i+17+9]= src_cr[7+i*uvlinesize];
2312 *(uint64_t*)(h->top_borders[0][s->mb_x]+16)= *(uint64_t*)(src_cb+8*uvlinesize);
2313 *(uint64_t*)(h->top_borders[0][s->mb_x]+24)= *(uint64_t*)(src_cr+8*uvlinesize);
2317 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){
2318 MpegEncContext * const s = &h->s;
2325 if(h->deblocking_filter == 2) {
2326 mb_xy = s->mb_x + s->mb_y*s->mb_stride;
2327 deblock_left = h->slice_table[mb_xy] == h->slice_table[mb_xy - 1];
2328 deblock_top = h->slice_table[mb_xy] == h->slice_table[h->top_mb_xy];
2330 deblock_left = (s->mb_x > 0);
2331 deblock_top = (s->mb_y > 0);
2334 src_y -= linesize + 1;
2335 src_cb -= uvlinesize + 1;
2336 src_cr -= uvlinesize + 1;
2338 #define XCHG(a,b,t,xchg)\
2345 for(i = !deblock_top; i<17; i++){
2346 XCHG(h->left_border[i ], src_y [i* linesize], temp8, xchg);
2351 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg);
2352 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1);
2353 if(s->mb_x+1 < s->mb_width){
2354 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x+1]), *(uint64_t*)(src_y +17), temp64, 1);
2358 if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2360 for(i = !deblock_top; i<9; i++){
2361 XCHG(h->left_border[i+17 ], src_cb[i*uvlinesize], temp8, xchg);
2362 XCHG(h->left_border[i+17+9], src_cr[i*uvlinesize], temp8, xchg);
2366 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1);
2367 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1);
2372 static inline void backup_pair_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize){
2373 MpegEncContext * const s = &h->s;
2376 src_y -= 2 * linesize;
2377 src_cb -= 2 * uvlinesize;
2378 src_cr -= 2 * uvlinesize;
2380 // There are two lines saved, the line above the the top macroblock of a pair,
2381 // and the line above the bottom macroblock
2382 h->left_border[0]= h->top_borders[0][s->mb_x][15];
2383 h->left_border[1]= h->top_borders[1][s->mb_x][15];
2384 for(i=2; i<34; i++){
2385 h->left_border[i]= src_y[15+i* linesize];
2388 *(uint64_t*)(h->top_borders[0][s->mb_x]+0)= *(uint64_t*)(src_y + 32*linesize);
2389 *(uint64_t*)(h->top_borders[0][s->mb_x]+8)= *(uint64_t*)(src_y +8+32*linesize);
2390 *(uint64_t*)(h->top_borders[1][s->mb_x]+0)= *(uint64_t*)(src_y + 33*linesize);
2391 *(uint64_t*)(h->top_borders[1][s->mb_x]+8)= *(uint64_t*)(src_y +8+33*linesize);
2393 if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2394 h->left_border[34 ]= h->top_borders[0][s->mb_x][16+7];
2395 h->left_border[34+ 1]= h->top_borders[1][s->mb_x][16+7];
2396 h->left_border[34+18 ]= h->top_borders[0][s->mb_x][24+7];
2397 h->left_border[34+18+1]= h->top_borders[1][s->mb_x][24+7];
2398 for(i=2; i<18; i++){
2399 h->left_border[i+34 ]= src_cb[7+i*uvlinesize];
2400 h->left_border[i+34+18]= src_cr[7+i*uvlinesize];
2402 *(uint64_t*)(h->top_borders[0][s->mb_x]+16)= *(uint64_t*)(src_cb+16*uvlinesize);
2403 *(uint64_t*)(h->top_borders[0][s->mb_x]+24)= *(uint64_t*)(src_cr+16*uvlinesize);
2404 *(uint64_t*)(h->top_borders[1][s->mb_x]+16)= *(uint64_t*)(src_cb+17*uvlinesize);
2405 *(uint64_t*)(h->top_borders[1][s->mb_x]+24)= *(uint64_t*)(src_cr+17*uvlinesize);
2409 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){
2410 MpegEncContext * const s = &h->s;
2413 int deblock_left = (s->mb_x > 0);
2414 int deblock_top = (s->mb_y > 1);
2416 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);
2418 src_y -= 2 * linesize + 1;
2419 src_cb -= 2 * uvlinesize + 1;
2420 src_cr -= 2 * uvlinesize + 1;
2422 #define XCHG(a,b,t,xchg)\
2429 for(i = (!deblock_top)<<1; i<34; i++){
2430 XCHG(h->left_border[i ], src_y [i* linesize], temp8, xchg);
2435 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg);
2436 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1);
2437 XCHG(*(uint64_t*)(h->top_borders[1][s->mb_x]+0), *(uint64_t*)(src_y +1 +linesize), temp64, xchg);
2438 XCHG(*(uint64_t*)(h->top_borders[1][s->mb_x]+8), *(uint64_t*)(src_y +9 +linesize), temp64, 1);
2439 if(s->mb_x+1 < s->mb_width){
2440 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x+1]), *(uint64_t*)(src_y +17), temp64, 1);
2441 XCHG(*(uint64_t*)(h->top_borders[1][s->mb_x+1]), *(uint64_t*)(src_y +17 +linesize), temp64, 1);
2445 if(!ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2447 for(i = (!deblock_top) << 1; i<18; i++){
2448 XCHG(h->left_border[i+34 ], src_cb[i*uvlinesize], temp8, xchg);
2449 XCHG(h->left_border[i+34+18], src_cr[i*uvlinesize], temp8, xchg);
2453 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1);
2454 XCHG(*(uint64_t*)(h->top_borders[0][s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1);
2455 XCHG(*(uint64_t*)(h->top_borders[1][s->mb_x]+16), *(uint64_t*)(src_cb+1 +uvlinesize), temp64, 1);
2456 XCHG(*(uint64_t*)(h->top_borders[1][s->mb_x]+24), *(uint64_t*)(src_cr+1 +uvlinesize), temp64, 1);
2461 static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
2462 MpegEncContext * const s = &h->s;
2463 const int mb_x= s->mb_x;
2464 const int mb_y= s->mb_y;
2465 const int mb_xy= mb_x + mb_y*s->mb_stride;
2466 const int mb_type= s->current_picture.mb_type[mb_xy];
2467 uint8_t *dest_y, *dest_cb, *dest_cr;
2468 int linesize, uvlinesize /*dct_offset*/;
2470 int *block_offset = &h->block_offset[0];
2471 const unsigned int bottom = mb_y & 1;
2472 const int transform_bypass = (s->qscale == 0 && h->sps.transform_bypass), is_h264 = (simple || s->codec_id == CODEC_ID_H264);
2473 void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
2474 void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
2476 dest_y = s->current_picture.data[0] + (mb_y * 16* s->linesize ) + mb_x * 16;
2477 dest_cb = s->current_picture.data[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2478 dest_cr = s->current_picture.data[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2480 s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
2481 s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
2483 if (!simple && MB_FIELD) {
2484 linesize = h->mb_linesize = s->linesize * 2;
2485 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2486 block_offset = &h->block_offset[24];
2487 if(mb_y&1){ //FIXME move out of this func?
2488 dest_y -= s->linesize*15;
2489 dest_cb-= s->uvlinesize*7;
2490 dest_cr-= s->uvlinesize*7;
2494 for(list=0; list<h->list_count; list++){
2495 if(!USES_LIST(mb_type, list))
2497 if(IS_16X16(mb_type)){
2498 int8_t *ref = &h->ref_cache[list][scan8[0]];
2499 fill_rectangle(ref, 4, 4, 8, 16+*ref^(s->mb_y&1), 1);
2501 for(i=0; i<16; i+=4){
2502 //FIXME can refs be smaller than 8x8 when !direct_8x8_inference ?
2503 int ref = h->ref_cache[list][scan8[i]];
2505 fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, 16+ref^(s->mb_y&1), 1);
2511 linesize = h->mb_linesize = s->linesize;
2512 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2513 // dct_offset = s->linesize * 16;
2516 if(transform_bypass){
2518 idct_add = IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
2519 }else if(IS_8x8DCT(mb_type)){
2520 idct_dc_add = s->dsp.h264_idct8_dc_add;
2521 idct_add = s->dsp.h264_idct8_add;
2523 idct_dc_add = s->dsp.h264_idct_dc_add;
2524 idct_add = s->dsp.h264_idct_add;
2527 if(!simple && FRAME_MBAFF && h->deblocking_filter && IS_INTRA(mb_type)
2528 && (!bottom || !IS_INTRA(s->current_picture.mb_type[mb_xy-s->mb_stride]))){
2529 int mbt_y = mb_y&~1;
2530 uint8_t *top_y = s->current_picture.data[0] + (mbt_y * 16* s->linesize ) + mb_x * 16;
2531 uint8_t *top_cb = s->current_picture.data[1] + (mbt_y * 8 * s->uvlinesize) + mb_x * 8;
2532 uint8_t *top_cr = s->current_picture.data[2] + (mbt_y * 8 * s->uvlinesize) + mb_x * 8;
2533 xchg_pair_border(h, top_y, top_cb, top_cr, s->linesize, s->uvlinesize, 1);
2536 if (!simple && IS_INTRA_PCM(mb_type)) {
2539 // The pixels are stored in h->mb array in the same order as levels,
2540 // copy them in output in the correct order.
2541 for(i=0; i<16; i++) {
2542 for (y=0; y<4; y++) {
2543 for (x=0; x<4; x++) {
2544 *(dest_y + block_offset[i] + y*linesize + x) = h->mb[i*16+y*4+x];
2548 for(i=16; i<16+4; i++) {
2549 for (y=0; y<4; y++) {
2550 for (x=0; x<4; x++) {
2551 *(dest_cb + block_offset[i] + y*uvlinesize + x) = h->mb[i*16+y*4+x];
2555 for(i=20; i<20+4; i++) {
2556 for (y=0; y<4; y++) {
2557 for (x=0; x<4; x++) {
2558 *(dest_cr + block_offset[i] + y*uvlinesize + x) = h->mb[i*16+y*4+x];
2563 if(IS_INTRA(mb_type)){
2564 if(h->deblocking_filter && (simple || !FRAME_MBAFF))
2565 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
2567 if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2568 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
2569 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
2572 if(IS_INTRA4x4(mb_type)){
2573 if(simple || !s->encoding){
2574 if(IS_8x8DCT(mb_type)){
2575 for(i=0; i<16; i+=4){
2576 uint8_t * const ptr= dest_y + block_offset[i];
2577 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2578 const int nnz = h->non_zero_count_cache[ scan8[i] ];
2579 h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
2580 (h->topright_samples_available<<i)&0x4000, linesize);
2582 if(nnz == 1 && h->mb[i*16])
2583 idct_dc_add(ptr, h->mb + i*16, linesize);
2585 idct_add(ptr, h->mb + i*16, linesize);
2589 for(i=0; i<16; i++){
2590 uint8_t * const ptr= dest_y + block_offset[i];
2592 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
2595 if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
2596 const int topright_avail= (h->topright_samples_available<<i)&0x8000;
2597 assert(mb_y || linesize <= block_offset[i]);
2598 if(!topright_avail){
2599 tr= ptr[3 - linesize]*0x01010101;
2600 topright= (uint8_t*) &tr;
2602 topright= ptr + 4 - linesize;
2606 h->hpc.pred4x4[ dir ](ptr, topright, linesize);
2607 nnz = h->non_zero_count_cache[ scan8[i] ];
2610 if(nnz == 1 && h->mb[i*16])
2611 idct_dc_add(ptr, h->mb + i*16, linesize);
2613 idct_add(ptr, h->mb + i*16, linesize);
2615 svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
2620 h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
2622 if(!transform_bypass)
2623 h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
2625 svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
2627 if(h->deblocking_filter && (simple || !FRAME_MBAFF))
2628 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
2630 hl_motion(h, dest_y, dest_cb, dest_cr,
2631 s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
2632 s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
2633 s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
2637 if(!IS_INTRA4x4(mb_type)){
2639 if(IS_INTRA16x16(mb_type)){
2640 for(i=0; i<16; i++){
2641 if(h->non_zero_count_cache[ scan8[i] ])
2642 idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2643 else if(h->mb[i*16])
2644 idct_dc_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2647 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
2648 for(i=0; i<16; i+=di){
2649 int nnz = h->non_zero_count_cache[ scan8[i] ];
2651 if(nnz==1 && h->mb[i*16])
2652 idct_dc_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2654 idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
2659 for(i=0; i<16; i++){
2660 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
2661 uint8_t * const ptr= dest_y + block_offset[i];
2662 svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
2668 if(simple || !ENABLE_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
2669 uint8_t *dest[2] = {dest_cb, dest_cr};
2670 if(transform_bypass){
2671 idct_add = idct_dc_add = s->dsp.add_pixels4;
2673 idct_add = s->dsp.h264_idct_add;
2674 idct_dc_add = s->dsp.h264_idct_dc_add;
2675 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]);
2676 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]);
2679 for(i=16; i<16+8; i++){
2680 if(h->non_zero_count_cache[ scan8[i] ])
2681 idct_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
2682 else if(h->mb[i*16])
2683 idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
2686 for(i=16; i<16+8; i++){
2687 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
2688 uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
2689 svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2);
2695 if(h->deblocking_filter) {
2696 if (!simple && FRAME_MBAFF) {
2697 //FIXME try deblocking one mb at a time?
2698 // the reduction in load/storing mvs and such might outweigh the extra backup/xchg_border
2699 const int mb_y = s->mb_y - 1;
2700 uint8_t *pair_dest_y, *pair_dest_cb, *pair_dest_cr;
2701 const int mb_xy= mb_x + mb_y*s->mb_stride;
2702 const int mb_type_top = s->current_picture.mb_type[mb_xy];
2703 const int mb_type_bottom= s->current_picture.mb_type[mb_xy+s->mb_stride];
2704 if (!bottom) return;
2705 pair_dest_y = s->current_picture.data[0] + (mb_y * 16* s->linesize ) + mb_x * 16;
2706 pair_dest_cb = s->current_picture.data[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2707 pair_dest_cr = s->current_picture.data[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8;
2709 if(IS_INTRA(mb_type_top | mb_type_bottom))
2710 xchg_pair_border(h, pair_dest_y, pair_dest_cb, pair_dest_cr, s->linesize, s->uvlinesize, 0);
2712 backup_pair_border(h, pair_dest_y, pair_dest_cb, pair_dest_cr, s->linesize, s->uvlinesize);
2716 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);
2717 fill_caches(h, mb_type_top, 1); //FIXME don't fill stuff which isn't used by filter_mb
2718 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2719 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2720 filter_mb(h, mb_x, mb_y, pair_dest_y, pair_dest_cb, pair_dest_cr, linesize, uvlinesize);
2723 tprintf(h->s.avctx, "call mbaff filter_mb\n");
2724 fill_caches(h, mb_type_bottom, 1); //FIXME don't fill stuff which isn't used by filter_mb
2725 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy+s->mb_stride]);
2726 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy+s->mb_stride]);
2727 filter_mb(h, mb_x, mb_y+1, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2729 tprintf(h->s.avctx, "call filter_mb\n");
2730 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, simple);
2731 fill_caches(h, mb_type, 1); //FIXME don't fill stuff which isn't used by filter_mb
2732 filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2738 * Process a macroblock; this case avoids checks for expensive uncommon cases.
2740 static void hl_decode_mb_simple(H264Context *h){
2741 hl_decode_mb_internal(h, 1);
2745 * Process a macroblock; this handles edge cases, such as interlacing.
2747 static void av_noinline hl_decode_mb_complex(H264Context *h){
2748 hl_decode_mb_internal(h, 0);
2751 static void hl_decode_mb(H264Context *h){
2752 MpegEncContext * const s = &h->s;
2753 const int mb_x= s->mb_x;
2754 const int mb_y= s->mb_y;
2755 const int mb_xy= mb_x + mb_y*s->mb_stride;
2756 const int mb_type= s->current_picture.mb_type[mb_xy];
2757 int is_complex = FRAME_MBAFF || MB_FIELD || IS_INTRA_PCM(mb_type) || s->codec_id != CODEC_ID_H264 || (ENABLE_GRAY && (s->flags&CODEC_FLAG_GRAY)) || s->encoding;
2763 hl_decode_mb_complex(h);
2764 else hl_decode_mb_simple(h);
2767 static void pic_as_field(Picture *pic, const int parity){
2769 for (i = 0; i < 4; ++i) {
2770 if (parity == PICT_BOTTOM_FIELD)
2771 pic->data[i] += pic->linesize[i];
2772 pic->reference = parity;
2773 pic->linesize[i] *= 2;
2777 static int split_field_copy(Picture *dest, Picture *src,
2778 int parity, int id_add){
2779 int match = !!(src->reference & parity);
2783 pic_as_field(dest, parity);
2785 dest->pic_id += id_add;
2792 * Split one reference list into field parts, interleaving by parity
2793 * as per H.264 spec section 8.2.4.2.5. Output fields have their data pointers
2794 * set to look at the actual start of data for that field.
2796 * @param dest output list
2797 * @param dest_len maximum number of fields to put in dest
2798 * @param src the source reference list containing fields and/or field pairs
2799 * (aka short_ref/long_ref, or
2800 * refFrameListXShortTerm/refFrameListLongTerm in spec-speak)
2801 * @param src_len number of Picture's in source (pairs and unmatched fields)
2802 * @param parity the parity of the picture being decoded/needing
2803 * these ref pics (PICT_{TOP,BOTTOM}_FIELD)
2804 * @return number of fields placed in dest
2806 static int split_field_half_ref_list(Picture *dest, int dest_len,
2807 Picture *src, int src_len, int parity){
2808 int same_parity = 1;
2814 for (out_i = 0; out_i < dest_len; out_i += field_output) {
2815 if (same_parity && same_i < src_len) {
2816 field_output = split_field_copy(dest + out_i, src + same_i,
2818 same_parity = !field_output;
2821 } else if (opp_i < src_len) {
2822 field_output = split_field_copy(dest + out_i, src + opp_i,
2823 PICT_FRAME - parity, 0);
2824 same_parity = field_output;
2836 * Split the reference frame list into a reference field list.
2837 * This implements H.264 spec 8.2.4.2.5 for a combined input list.
2838 * The input list contains both reference field pairs and
2839 * unmatched reference fields; it is ordered as spec describes
2840 * RefPicListX for frames in 8.2.4.2.1 and 8.2.4.2.3, except that
2841 * unmatched field pairs are also present. Conceptually this is equivalent
2842 * to concatenation of refFrameListXShortTerm with refFrameListLongTerm.
2844 * @param dest output reference list where ordered fields are to be placed
2845 * @param dest_len max number of fields to place at dest
2846 * @param src source reference list, as described above
2847 * @param src_len number of pictures (pairs and unmatched fields) in src
2848 * @param parity parity of field being currently decoded
2849 * (one of PICT_{TOP,BOTTOM}_FIELD)
2850 * @param long_i index into src array that holds first long reference picture,
2851 * or src_len if no long refs present.
2853 static int split_field_ref_list(Picture *dest, int dest_len,
2854 Picture *src, int src_len,
2855 int parity, int long_i){
2857 int i = split_field_half_ref_list(dest, dest_len, src, long_i, parity);
2861 i += split_field_half_ref_list(dest, dest_len, src + long_i,
2862 src_len - long_i, parity);
2867 * fills the default_ref_list.
2869 static int fill_default_ref_list(H264Context *h){
2870 MpegEncContext * const s = &h->s;
2872 int smallest_poc_greater_than_current = -1;
2874 Picture sorted_short_ref[32];
2875 Picture field_entry_list[2][32];
2876 Picture *frame_list[2];
2878 if (FIELD_PICTURE) {
2879 structure_sel = PICT_FRAME;
2880 frame_list[0] = field_entry_list[0];
2881 frame_list[1] = field_entry_list[1];
2884 frame_list[0] = h->default_ref_list[0];
2885 frame_list[1] = h->default_ref_list[1];
2888 if(h->slice_type==B_TYPE){
2895 /* sort frame according to poc in B slice */
2896 for(out_i=0; out_i<h->short_ref_count; out_i++){
2898 int best_poc=INT_MAX;
2900 for(i=0; i<h->short_ref_count; i++){
2901 const int poc= h->short_ref[i]->poc;
2902 if(poc > limit && poc < best_poc){
2908 assert(best_i != INT_MIN);
2911 sorted_short_ref[out_i]= *h->short_ref[best_i];
2912 tprintf(h->s.avctx, "sorted poc: %d->%d poc:%d fn:%d\n", best_i, out_i, sorted_short_ref[out_i].poc, sorted_short_ref[out_i].frame_num);
2913 if (-1 == smallest_poc_greater_than_current) {
2914 if (h->short_ref[best_i]->poc >= s->current_picture_ptr->poc) {
2915 smallest_poc_greater_than_current = out_i;
2920 tprintf(h->s.avctx, "current poc: %d, smallest_poc_greater_than_current: %d\n", s->current_picture_ptr->poc, smallest_poc_greater_than_current);
2922 // find the largest poc
2923 for(list=0; list<2; list++){
2926 int step= list ? -1 : 1;
2928 for(i=0; i<h->short_ref_count && index < h->ref_count[list]; i++, j+=step) {
2930 while(j<0 || j>= h->short_ref_count){
2931 if(j != -99 && step == (list ? -1 : 1))
2934 j= smallest_poc_greater_than_current + (step>>1);
2936 sel = sorted_short_ref[j].reference | structure_sel;
2937 if(sel != PICT_FRAME) continue;
2938 frame_list[list][index ]= sorted_short_ref[j];
2939 frame_list[list][index++].pic_id= sorted_short_ref[j].frame_num;
2941 short_len[list] = index;
2943 for(i = 0; i < 16 && index < h->ref_count[ list ]; i++){
2945 if(h->long_ref[i] == NULL) continue;
2946 sel = h->long_ref[i]->reference | structure_sel;
2947 if(sel != PICT_FRAME) continue;
2949 frame_list[ list ][index ]= *h->long_ref[i];
2950 frame_list[ list ][index++].pic_id= i;;
2954 if(list && (smallest_poc_greater_than_current<=0 || smallest_poc_greater_than_current>=h->short_ref_count) && (1 < index)){
2955 // swap the two first elements of L1 when
2956 // L0 and L1 are identical
2957 Picture temp= frame_list[1][0];
2958 frame_list[1][0] = frame_list[1][1];
2959 frame_list[1][1] = temp;
2964 for(list=0; list<2; list++){
2966 len[list] = split_field_ref_list(h->default_ref_list[list],
2970 s->picture_structure,
2973 if(len[list] < h->ref_count[ list ])
2974 memset(&h->default_ref_list[list][len[list]], 0, sizeof(Picture)*(h->ref_count[ list ] - len[list]));
2981 for(i=0; i<h->short_ref_count; i++){
2983 sel = h->short_ref[i]->reference | structure_sel;
2984 if(sel != PICT_FRAME) continue;
2985 frame_list[0][index ]= *h->short_ref[i];
2986 frame_list[0][index++].pic_id= h->short_ref[i]->frame_num;
2989 for(i = 0; i < 16; i++){
2991 if(h->long_ref[i] == NULL) continue;
2992 sel = h->long_ref[i]->reference | structure_sel;
2993 if(sel != PICT_FRAME) continue;
2994 frame_list[0][index ]= *h->long_ref[i];
2995 frame_list[0][index++].pic_id= i;;
2999 index = split_field_ref_list(h->default_ref_list[0],
3000 h->ref_count[0], frame_list[0],
3001 index, s->picture_structure,
3004 if(index < h->ref_count[0])
3005 memset(&h->default_ref_list[0][index], 0, sizeof(Picture)*(h->ref_count[0] - index));
3008 for (i=0; i<h->ref_count[0]; i++) {
3009 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]);
3011 if(h->slice_type==B_TYPE){
3012 for (i=0; i<h->ref_count[1]; i++) {
3013 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[0][i].data[0]);
3020 static void print_short_term(H264Context *h);
3021 static void print_long_term(H264Context *h);
3024 * Extract structure information about the picture described by pic_num in
3025 * the current decoding context (frame or field). Note that pic_num is
3026 * picture number without wrapping (so, 0<=pic_num<max_pic_num).
3027 * @param pic_num picture number for which to extract structure information
3028 * @param structure one of PICT_XXX describing structure of picture
3030 * @return frame number (short term) or long term index of picture
3031 * described by pic_num
3033 static int pic_num_extract(H264Context *h, int pic_num, int *structure){
3034 MpegEncContext * const s = &h->s;
3036 *structure = s->picture_structure;
3039 /* opposite field */
3040 *structure ^= PICT_FRAME;
3047 static int decode_ref_pic_list_reordering(H264Context *h){
3048 MpegEncContext * const s = &h->s;
3049 int list, index, pic_structure;
3051 print_short_term(h);
3053 if(h->slice_type==I_TYPE || h->slice_type==SI_TYPE) return 0; //FIXME move before func
3055 for(list=0; list<h->list_count; list++){
3056 memcpy(h->ref_list[list], h->default_ref_list[list], sizeof(Picture)*h->ref_count[list]);
3058 if(get_bits1(&s->gb)){
3059 int pred= h->curr_pic_num;
3061 for(index=0; ; index++){
3062 unsigned int reordering_of_pic_nums_idc= get_ue_golomb(&s->gb);
3063 unsigned int pic_id;
3065 Picture *ref = NULL;
3067 if(reordering_of_pic_nums_idc==3)
3070 if(index >= h->ref_count[list]){
3071 av_log(h->s.avctx, AV_LOG_ERROR, "reference count overflow\n");
3075 if(reordering_of_pic_nums_idc<3){
3076 if(reordering_of_pic_nums_idc<2){
3077 const unsigned int abs_diff_pic_num= get_ue_golomb(&s->gb) + 1;
3080 if(abs_diff_pic_num > h->max_pic_num){
3081 av_log(h->s.avctx, AV_LOG_ERROR, "abs_diff_pic_num overflow\n");
3085 if(reordering_of_pic_nums_idc == 0) pred-= abs_diff_pic_num;
3086 else pred+= abs_diff_pic_num;
3087 pred &= h->max_pic_num - 1;
3089 frame_num = pic_num_extract(h, pred, &pic_structure);
3091 for(i= h->short_ref_count-1; i>=0; i--){
3092 ref = h->short_ref[i];
3093 assert(ref->reference);
3094 assert(!ref->long_ref);
3095 if(ref->data[0] != NULL &&
3096 ref->frame_num == frame_num &&
3097 (ref->reference & pic_structure) &&
3098 ref->long_ref == 0) // ignore non existing pictures by testing data[0] pointer
3105 pic_id= get_ue_golomb(&s->gb); //long_term_pic_idx
3107 long_idx= pic_num_extract(h, pic_id, &pic_structure);
3110 av_log(h->s.avctx, AV_LOG_ERROR, "long_term_pic_idx overflow\n");
3113 ref = h->long_ref[long_idx];
3114 assert(!(ref && !ref->reference));
3115 if(ref && (ref->reference & pic_structure)){
3116 ref->pic_id= pic_id;
3117 assert(ref->long_ref);
3125 av_log(h->s.avctx, AV_LOG_ERROR, "reference picture missing during reorder\n");
3126 memset(&h->ref_list[list][index], 0, sizeof(Picture)); //FIXME
3128 for(i=index; i+1<h->ref_count[list]; i++){
3129 if(ref->long_ref == h->ref_list[list][i].long_ref && ref->pic_id == h->ref_list[list][i].pic_id)
3132 for(; i > index; i--){
3133 h->ref_list[list][i]= h->ref_list[list][i-1];
3135 h->ref_list[list][index]= *ref;
3137 pic_as_field(&h->ref_list[list][index], pic_structure);
3141 av_log(h->s.avctx, AV_LOG_ERROR, "illegal reordering_of_pic_nums_idc\n");
3147 for(list=0; list<h->list_count; list++){
3148 for(index= 0; index < h->ref_count[list]; index++){
3149 if(!h->ref_list[list][index].data[0])
3150 h->ref_list[list][index]= s->current_picture;
3154 if(h->slice_type==B_TYPE && !h->direct_spatial_mv_pred)
3155 direct_dist_scale_factor(h);
3156 direct_ref_list_init(h);
3160 static void fill_mbaff_ref_list(H264Context *h){
3162 for(list=0; list<2; list++){ //FIXME try list_count
3163 for(i=0; i<h->ref_count[list]; i++){
3164 Picture *frame = &h->ref_list[list][i];
3165 Picture *field = &h->ref_list[list][16+2*i];
3168 field[0].linesize[j] <<= 1;
3169 field[0].reference = PICT_TOP_FIELD;
3170 field[1] = field[0];
3172 field[1].data[j] += frame->linesize[j];
3173 field[1].reference = PICT_BOTTOM_FIELD;
3175 h->luma_weight[list][16+2*i] = h->luma_weight[list][16+2*i+1] = h->luma_weight[list][i];
3176 h->luma_offset[list][16+2*i] = h->luma_offset[list][16+2*i+1] = h->luma_offset[list][i];
3178 h->chroma_weight[list][16+2*i][j] = h->chroma_weight[list][16+2*i+1][j] = h->chroma_weight[list][i][j];
3179 h->chroma_offset[list][16+2*i][j] = h->chroma_offset[list][16+2*i+1][j] = h->chroma_offset[list][i][j];
3183 for(j=0; j<h->ref_count[1]; j++){
3184 for(i=0; i<h->ref_count[0]; i++)
3185 h->implicit_weight[j][16+2*i] = h->implicit_weight[j][16+2*i+1] = h->implicit_weight[j][i];
3186 memcpy(h->implicit_weight[16+2*j], h->implicit_weight[j], sizeof(*h->implicit_weight));
3187 memcpy(h->implicit_weight[16+2*j+1], h->implicit_weight[j], sizeof(*h->implicit_weight));
3191 static int pred_weight_table(H264Context *h){
3192 MpegEncContext * const s = &h->s;
3194 int luma_def, chroma_def;
3197 h->use_weight_chroma= 0;
3198 h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
3199 h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
3200 luma_def = 1<<h->luma_log2_weight_denom;
3201 chroma_def = 1<<h->chroma_log2_weight_denom;
3203 for(list=0; list<2; list++){
3204 for(i=0; i<h->ref_count[list]; i++){
3205 int luma_weight_flag, chroma_weight_flag;
3207 luma_weight_flag= get_bits1(&s->gb);
3208 if(luma_weight_flag){
3209 h->luma_weight[list][i]= get_se_golomb(&s->gb);
3210 h->luma_offset[list][i]= get_se_golomb(&s->gb);
3211 if( h->luma_weight[list][i] != luma_def
3212 || h->luma_offset[list][i] != 0)
3215 h->luma_weight[list][i]= luma_def;
3216 h->luma_offset[list][i]= 0;
3219 chroma_weight_flag= get_bits1(&s->gb);
3220 if(chroma_weight_flag){
3223 h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
3224 h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
3225 if( h->chroma_weight[list][i][j] != chroma_def
3226 || h->chroma_offset[list][i][j] != 0)
3227 h->use_weight_chroma= 1;
3232 h->chroma_weight[list][i][j]= chroma_def;
3233 h->chroma_offset[list][i][j]= 0;
3237 if(h->slice_type != B_TYPE) break;
3239 h->use_weight= h->use_weight || h->use_weight_chroma;
3243 static void implicit_weight_table(H264Context *h){
3244 MpegEncContext * const s = &h->s;
3246 int cur_poc = s->current_picture_ptr->poc;
3248 if( h->ref_count[0] == 1 && h->ref_count[1] == 1
3249 && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
3251 h->use_weight_chroma= 0;
3256 h->use_weight_chroma= 2;
3257 h->luma_log2_weight_denom= 5;
3258 h->chroma_log2_weight_denom= 5;
3260 for(ref0=0; ref0 < h->ref_count[0]; ref0++){
3261 int poc0 = h->ref_list[0][ref0].poc;
3262 for(ref1=0; ref1 < h->ref_count[1]; ref1++){
3263 int poc1 = h->ref_list[1][ref1].poc;
3264 int td = av_clip(poc1 - poc0, -128, 127);
3266 int tb = av_clip(cur_poc - poc0, -128, 127);
3267 int tx = (16384 + (FFABS(td) >> 1)) / td;
3268 int dist_scale_factor = av_clip((tb*tx + 32) >> 6, -1024, 1023) >> 2;
3269 if(dist_scale_factor < -64 || dist_scale_factor > 128)
3270 h->implicit_weight[ref0][ref1] = 32;
3272 h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor;
3274 h->implicit_weight[ref0][ref1] = 32;
3280 * Mark a picture as no longer needed for reference. The refmask
3281 * argument allows unreferencing of individual fields or the whole frame.
3282 * If the picture becomes entirely unreferenced, but is being held for
3283 * display purposes, it is marked as such.
3284 * @param refmask mask of fields to unreference; the mask is bitwise
3285 * anded with the reference marking of pic
3286 * @return non-zero if pic becomes entirely unreferenced (except possibly
3287 * for display purposes) zero if one of the fields remains in
3290 static inline int unreference_pic(H264Context *h, Picture *pic, int refmask){
3292 if (pic->reference &= refmask) {
3295 if(pic == h->delayed_output_pic)
3296 pic->reference=DELAYED_PIC_REF;
3298 for(i = 0; h->delayed_pic[i]; i++)
3299 if(pic == h->delayed_pic[i]){
3300 pic->reference=DELAYED_PIC_REF;
3309 * instantaneous decoder refresh.
3311 static void idr(H264Context *h){
3314 for(i=0; i<16; i++){
3315 if (h->long_ref[i] != NULL) {
3316 unreference_pic(h, h->long_ref[i], 0);
3317 h->long_ref[i]= NULL;
3320 h->long_ref_count=0;
3322 for(i=0; i<h->short_ref_count; i++){
3323 unreference_pic(h, h->short_ref[i], 0);
3324 h->short_ref[i]= NULL;
3326 h->short_ref_count=0;
3329 /* forget old pics after a seek */
3330 static void flush_dpb(AVCodecContext *avctx){
3331 H264Context *h= avctx->priv_data;
3333 for(i=0; i<16; i++) {
3334 if(h->delayed_pic[i])
3335 h->delayed_pic[i]->reference= 0;
3336 h->delayed_pic[i]= NULL;
3338 if(h->delayed_output_pic)
3339 h->delayed_output_pic->reference= 0;
3340 h->delayed_output_pic= NULL;
3342 if(h->s.current_picture_ptr)
3343 h->s.current_picture_ptr->reference= 0;
3344 h->s.first_field= 0;
3348 * Find a Picture in the short term reference list by frame number.
3349 * @param frame_num frame number to search for
3350 * @param idx the index into h->short_ref where returned picture is found
3351 * undefined if no picture found.
3352 * @return pointer to the found picture, or NULL if no pic with the provided
3353 * frame number is found
3355 static Picture * find_short(H264Context *h, int frame_num, int *idx){
3356 MpegEncContext * const s = &h->s;
3359 for(i=0; i<h->short_ref_count; i++){
3360 Picture *pic= h->short_ref[i];
3361 if(s->avctx->debug&FF_DEBUG_MMCO)
3362 av_log(h->s.avctx, AV_LOG_DEBUG, "%d %d %p\n", i, pic->frame_num, pic);
3363 if(pic->frame_num == frame_num) {
3372 * Remove a picture from the short term reference list by its index in
3373 * that list. This does no checking on the provided index; it is assumed
3374 * to be valid. Other list entries are shifted down.
3375 * @param i index into h->short_ref of picture to remove.
3377 static void remove_short_at_index(H264Context *h, int i){
3378 assert(i > 0 && i < h->short_ref_count);
3379 h->short_ref[i]= NULL;
3380 if (--h->short_ref_count)
3381 memmove(&h->short_ref[i], &h->short_ref[i+1], (h->short_ref_count - i)*sizeof(Picture*));
3386 * @return the removed picture or NULL if an error occurs
3388 static Picture * remove_short(H264Context *h, int frame_num){
3389 MpegEncContext * const s = &h->s;
3393 if(s->avctx->debug&FF_DEBUG_MMCO)
3394 av_log(h->s.avctx, AV_LOG_DEBUG, "remove short %d count %d\n", frame_num, h->short_ref_count);
3396 pic = find_short(h, frame_num, &i);
3398 remove_short_at_index(h, i);
3404 * Remove a picture from the long term reference list by its index in
3405 * that list. This does no checking on the provided index; it is assumed
3406 * to be valid. The removed entry is set to NULL. Other entries are unaffected.
3407 * @param i index into h->long_ref of picture to remove.
3409 static void remove_long_at_index(H264Context *h, int i){
3410 h->long_ref[i]= NULL;
3411 h->long_ref_count--;
3416 * @return the removed picture or NULL if an error occurs
3418 static Picture * remove_long(H264Context *h, int i){
3421 pic= h->long_ref[i];
3423 remove_long_at_index(h, i);
3429 * print short term list
3431 static void print_short_term(H264Context *h) {
3433 if(h->s.avctx->debug&FF_DEBUG_MMCO) {
3434 av_log(h->s.avctx, AV_LOG_DEBUG, "short term list:\n");
3435 for(i=0; i<h->short_ref_count; i++){
3436 Picture *pic= h->short_ref[i];
3437 av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]);
3443 * print long term list
3445 static void print_long_term(H264Context *h) {
3447 if(h->s.avctx->debug&FF_DEBUG_MMCO) {
3448 av_log(h->s.avctx, AV_LOG_DEBUG, "long term list:\n");
3449 for(i = 0; i < 16; i++){
3450 Picture *pic= h->long_ref[i];
3452 av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]);
3459 * Executes the reference picture marking (memory management control operations).
3461 static int execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
3462 MpegEncContext * const s = &h->s;
3464 int current_ref_assigned=0;
3467 if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0)
3468 av_log(h->s.avctx, AV_LOG_DEBUG, "no mmco here\n");
3470 for(i=0; i<mmco_count; i++){
3471 int structure, frame_num, unref_pic;
3472 if(s->avctx->debug&FF_DEBUG_MMCO)
3473 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);
3475 switch(mmco[i].opcode){
3476 case MMCO_SHORT2UNUSED:
3477 if(s->avctx->debug&FF_DEBUG_MMCO)
3478 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);
3479 frame_num = pic_num_extract(h, mmco[i].short_pic_num, &structure);
3480 pic = find_short(h, frame_num, &j);
3482 if (unreference_pic(h, pic, structure ^ PICT_FRAME))
3483 remove_short_at_index(h, j);
3484 } else if(s->avctx->debug&FF_DEBUG_MMCO)
3485 av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref short failure\n");
3487 case MMCO_SHORT2LONG:
3488 if (FIELD_PICTURE && mmco[i].long_arg < h->long_ref_count &&
3489 h->long_ref[mmco[i].long_arg]->frame_num ==
3490 mmco[i].short_pic_num / 2) {
3491 /* do nothing, we've already moved this field pair. */
3493 int frame_num = mmco[i].short_pic_num >> FIELD_PICTURE;
3495 pic= remove_long(h, mmco[i].long_arg);
3496 if(pic) unreference_pic(h, pic, 0);
3498 h->long_ref[ mmco[i].long_arg ]= remove_short(h, frame_num);
3499 if (h->long_ref[ mmco[i].long_arg ]){
3500 h->long_ref[ mmco[i].long_arg ]->long_ref=1;
3501 h->long_ref_count++;
3505 case MMCO_LONG2UNUSED:
3506 j = pic_num_extract(h, mmco[i].long_arg, &structure);
3507 pic = h->long_ref[j];
3509 if (unreference_pic(h, pic, structure ^ PICT_FRAME))
3510 remove_long_at_index(h, j);
3511 } else if(s->avctx->debug&FF_DEBUG_MMCO)
3512 av_log(h->s.avctx, AV_LOG_DEBUG, "mmco: unref long failure\n");
3516 if (FIELD_PICTURE && !s->first_field) {
3517 if (h->long_ref[mmco[i].long_arg] == s->current_picture_ptr) {
3518 /* Just mark second field as referenced */
3520 } else if (s->current_picture_ptr->reference) {
3521 /* First field in pair is in short term list or
3522 * at a different long term index.
3523 * This is not allowed; see 7.4.3, notes 2 and 3.
3524 * Report the problem and keep the pair where it is,
3525 * and mark this field valid.
3527 av_log(h->s.avctx, AV_LOG_ERROR,
3528 "illegal long term reference assignment for second "
3529 "field in complementary field pair (first field is "
3530 "short term or has non-matching long index)\n");
3536 pic= remove_long(h, mmco[i].long_arg);
3537 if(pic) unreference_pic(h, pic, 0);
3539 h->long_ref[ mmco[i].long_arg ]= s->current_picture_ptr;
3540 h->long_ref[ mmco[i].long_arg ]->long_ref=1;
3541 h->long_ref_count++;
3544 s->current_picture_ptr->reference |= s->picture_structure;
3545 current_ref_assigned=1;
3547 case MMCO_SET_MAX_LONG:
3548 assert(mmco[i].long_arg <= 16);
3549 // just remove the long term which index is greater than new max
3550 for(j = mmco[i].long_arg; j<16; j++){
3551 pic = remove_long(h, j);
3552 if (pic) unreference_pic(h, pic, 0);
3556 while(h->short_ref_count){
3557 pic= remove_short(h, h->short_ref[0]->frame_num);
3558 if(pic) unreference_pic(h, pic, 0);
3560 for(j = 0; j < 16; j++) {
3561 pic= remove_long(h, j);
3562 if(pic) unreference_pic(h, pic, 0);
3569 if (!current_ref_assigned && FIELD_PICTURE &&
3570 !s->first_field && s->current_picture_ptr->reference) {
3572 /* Second field of complementary field pair; the first field of
3573 * which is already referenced. If short referenced, it
3574 * should be first entry in short_ref. If not, it must exist
3575 * in long_ref; trying to put it on the short list here is an
3576 * error in the encoded bit stream (ref: 7.4.3, NOTE 2 and 3).
3578 if (h->short_ref_count && h->short_ref[0] == s->current_picture_ptr) {
3579 /* Just mark the second field valid */
3580 s->current_picture_ptr->reference = PICT_FRAME;
3581 } else if (s->current_picture_ptr->long_ref) {
3582 av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term reference "
3583 "assignment for second field "
3584 "in complementary field pair "
3585 "(first field is long term)\n");
3588 * First field in reference, but not in any sensible place on our
3589 * reference lists. This shouldn't happen unless reference
3590 * handling somewhere else is wrong.
3594 current_ref_assigned = 1;
3597 if(!current_ref_assigned){
3598 pic= remove_short(h, s->current_picture_ptr->frame_num);
3600 unreference_pic(h, pic, 0);
3601 av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term buffer state detected\n");
3604 if(h->short_ref_count)
3605 memmove(&h->short_ref[1], &h->short_ref[0], h->short_ref_count*sizeof(Picture*));
3607 h->short_ref[0]= s->current_picture_ptr;
3608 h->short_ref[0]->long_ref=0;
3609 h->short_ref_count++;
3610 s->current_picture_ptr->reference |= s->picture_structure;
3613 print_short_term(h);
3618 static int decode_ref_pic_marking(H264Context *h, GetBitContext *gb){
3619 MpegEncContext * const s = &h->s;
3622 if(h->nal_unit_type == NAL_IDR_SLICE){ //FIXME fields
3623 s->broken_link= get_bits1(gb) -1;
3624 h->mmco[0].long_arg= get_bits1(gb) - 1; // current_long_term_idx
3625 if(h->mmco[0].long_arg == -1)
3628 h->mmco[0].opcode= MMCO_LONG;
3632 if(get_bits1(gb)){ // adaptive_ref_pic_marking_mode_flag
3633 for(i= 0; i<MAX_MMCO_COUNT; i++) {
3634 MMCOOpcode opcode= get_ue_golomb(gb);
3636 h->mmco[i].opcode= opcode;
3637 if(opcode==MMCO_SHORT2UNUSED || opcode==MMCO_SHORT2LONG){
3638 h->mmco[i].short_pic_num= (h->curr_pic_num - get_ue_golomb(gb) - 1) & (h->max_pic_num - 1);
3639 /* if(h->mmco[i].short_pic_num >= h->short_ref_count || h->short_ref[ h->mmco[i].short_pic_num ] == NULL){
3640 av_log(s->avctx, AV_LOG_ERROR, "illegal short ref in memory management control operation %d\n", mmco);
3644 if(opcode==MMCO_SHORT2LONG || opcode==MMCO_LONG2UNUSED || opcode==MMCO_LONG || opcode==MMCO_SET_MAX_LONG){
3645 unsigned int long_arg= get_ue_golomb(gb);
3646 if(long_arg >= 32 || (long_arg >= 16 && !(opcode == MMCO_LONG2UNUSED && FIELD_PICTURE))){
3647 av_log(h->s.avctx, AV_LOG_ERROR, "illegal long ref in memory management control operation %d\n", opcode);
3650 h->mmco[i].long_arg= long_arg;
3653 if(opcode > (unsigned)MMCO_LONG){
3654 av_log(h->s.avctx, AV_LOG_ERROR, "illegal memory management control operation %d\n", opcode);
3657 if(opcode == MMCO_END)
3662 assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count);
3664 if(h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count &&
3665 !(FIELD_PICTURE && !s->first_field && s->current_picture_ptr->reference)) {
3666 h->mmco[0].opcode= MMCO_SHORT2UNUSED;
3667 h->mmco[0].short_pic_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num;
3669 if (FIELD_PICTURE) {
3670 h->mmco[0].short_pic_num *= 2;
3671 h->mmco[1].opcode= MMCO_SHORT2UNUSED;
3672 h->mmco[1].short_pic_num= h->mmco[0].short_pic_num + 1;
3683 static int init_poc(H264Context *h){
3684 MpegEncContext * const s = &h->s;
3685 const int max_frame_num= 1<<h->sps.log2_max_frame_num;
3688 if(h->nal_unit_type == NAL_IDR_SLICE){
3689 h->frame_num_offset= 0;
3691 if(h->frame_num < h->prev_frame_num)
3692 h->frame_num_offset= h->prev_frame_num_offset + max_frame_num;
3694 h->frame_num_offset= h->prev_frame_num_offset;
3697 if(h->sps.poc_type==0){
3698 const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
3700 if(h->nal_unit_type == NAL_IDR_SLICE){
3705 if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
3706 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
3707 else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
3708 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
3710 h->poc_msb = h->prev_poc_msb;
3711 //printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
3713 field_poc[1] = h->poc_msb + h->poc_lsb;
3714 if(s->picture_structure == PICT_FRAME)
3715 field_poc[1] += h->delta_poc_bottom;
3716 }else if(h->sps.poc_type==1){
3717 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
3720 if(h->sps.poc_cycle_length != 0)
3721 abs_frame_num = h->frame_num_offset + h->frame_num;
3725 if(h->nal_ref_idc==0 && abs_frame_num > 0)
3728 expected_delta_per_poc_cycle = 0;
3729 for(i=0; i < h->sps.poc_cycle_length; i++)
3730 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
3732 if(abs_frame_num > 0){
3733 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
3734 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
3736 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
3737 for(i = 0; i <= frame_num_in_poc_cycle; i++)
3738 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
3742 if(h->nal_ref_idc == 0)
3743 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
3745 field_poc[0] = expectedpoc + h->delta_poc[0];
3746 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
3748 if(s->picture_structure == PICT_FRAME)
3749 field_poc[1] += h->delta_poc[1];
3752 if(h->nal_unit_type == NAL_IDR_SLICE){
3755 if(h->nal_ref_idc) poc= 2*(h->frame_num_offset + h->frame_num);
3756 else poc= 2*(h->frame_num_offset + h->frame_num) - 1;
3762 if(s->picture_structure != PICT_BOTTOM_FIELD) {
3763 s->current_picture_ptr->field_poc[0]= field_poc[0];
3764 s->current_picture_ptr->poc = field_poc[0];
3766 if(s->picture_structure != PICT_TOP_FIELD) {
3767 s->current_picture_ptr->field_poc[1]= field_poc[1];
3768 s->current_picture_ptr->poc = field_poc[1];
3770 if(!FIELD_PICTURE || !s->first_field) {
3771 Picture *cur = s->current_picture_ptr;
3772 cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
3780 * initialize scan tables
3782 static void init_scan_tables(H264Context *h){
3783 MpegEncContext * const s = &h->s;
3785 if(s->dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
3786 memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
3787 memcpy(h-> field_scan, field_scan, 16*sizeof(uint8_t));
3789 for(i=0; i<16; i++){
3790 #define T(x) (x>>2) | ((x<<2) & 0xF)
3791 h->zigzag_scan[i] = T(zigzag_scan[i]);
3792 h-> field_scan[i] = T( field_scan[i]);
3796 if(s->dsp.h264_idct8_add == ff_h264_idct8_add_c){
3797 memcpy(h->zigzag_scan8x8, zigzag_scan8x8, 64*sizeof(uint8_t));
3798 memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
3799 memcpy(h->field_scan8x8, field_scan8x8, 64*sizeof(uint8_t));
3800 memcpy(h->field_scan8x8_cavlc, field_scan8x8_cavlc, 64*sizeof(uint8_t));
3802 for(i=0; i<64; i++){
3803 #define T(x) (x>>3) | ((x&7)<<3)
3804 h->zigzag_scan8x8[i] = T(zigzag_scan8x8[i]);
3805 h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
3806 h->field_scan8x8[i] = T(field_scan8x8[i]);
3807 h->field_scan8x8_cavlc[i] = T(field_scan8x8_cavlc[i]);
3811 if(h->sps.transform_bypass){ //FIXME same ugly
3812 h->zigzag_scan_q0 = zigzag_scan;
3813 h->zigzag_scan8x8_q0 = zigzag_scan8x8;
3814 h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
3815 h->field_scan_q0 = field_scan;
3816 h->field_scan8x8_q0 = field_scan8x8;
3817 h->field_scan8x8_cavlc_q0 = field_scan8x8_cavlc;
3819 h->zigzag_scan_q0 = h->zigzag_scan;
3820 h->zigzag_scan8x8_q0 = h->zigzag_scan8x8;
3821 h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
3822 h->field_scan_q0 = h->field_scan;
3823 h->field_scan8x8_q0 = h->field_scan8x8;
3824 h->field_scan8x8_cavlc_q0 = h->field_scan8x8_cavlc;
3829 * Replicates H264 "master" context to thread contexts.
3831 static void clone_slice(H264Context *dst, H264Context *src)
3833 memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset));
3834 dst->s.current_picture_ptr = src->s.current_picture_ptr;
3835 dst->s.current_picture = src->s.current_picture;
3836 dst->s.linesize = src->s.linesize;
3837 dst->s.uvlinesize = src->s.uvlinesize;
3838 dst->s.first_field = src->s.first_field;
3840 dst->prev_poc_msb = src->prev_poc_msb;
3841 dst->prev_poc_lsb = src->prev_poc_lsb;
3842 dst->prev_frame_num_offset = src->prev_frame_num_offset;
3843 dst->prev_frame_num = src->prev_frame_num;
3844 dst->short_ref_count = src->short_ref_count;
3846 memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref));
3847 memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref));
3848 memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
3849 memcpy(dst->ref_list, src->ref_list, sizeof(dst->ref_list));
3851 memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff));
3852 memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff));
3856 * decodes a slice header.
3857 * this will allso call MPV_common_init() and frame_start() as needed
3859 * @param h h264context
3860 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
3862 * @return 0 if okay, <0 if an error occured, 1 if decoding must not be multithreaded
3864 static int decode_slice_header(H264Context *h, H264Context *h0){
3865 MpegEncContext * const s = &h->s;
3866 MpegEncContext * const s0 = &h0->s;
3867 unsigned int first_mb_in_slice;
3868 unsigned int pps_id;
3869 int num_ref_idx_active_override_flag;
3870 static const uint8_t slice_type_map[5]= {P_TYPE, B_TYPE, I_TYPE, SP_TYPE, SI_TYPE};
3871 unsigned int slice_type, tmp, i;
3872 int default_ref_list_done = 0;
3873 int last_pic_structure;
3875 s->dropable= h->nal_ref_idc == 0;
3877 first_mb_in_slice= get_ue_golomb(&s->gb);
3879 if((s->flags2 & CODEC_FLAG2_CHUNKS) && first_mb_in_slice == 0){
3880 h0->current_slice = 0;
3881 if (!s0->first_field)
3882 s->current_picture_ptr= NULL;
3885 slice_type= get_ue_golomb(&s->gb);
3887 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);
3892 h->slice_type_fixed=1;
3894 h->slice_type_fixed=0;
3896 slice_type= slice_type_map[ slice_type ];
3897 if (slice_type == I_TYPE
3898 || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
3899 default_ref_list_done = 1;
3901 h->slice_type= slice_type;
3903 s->pict_type= h->slice_type; // to make a few old func happy, it's wrong though
3905 pps_id= get_ue_golomb(&s->gb);
3906 if(pps_id>=MAX_PPS_COUNT){
3907 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
3910 if(!h0->pps_buffers[pps_id]) {
3911 av_log(h->s.avctx, AV_LOG_ERROR, "non existing PPS referenced\n");
3914 h->pps= *h0->pps_buffers[pps_id];
3916 if(!h0->sps_buffers[h->pps.sps_id]) {
3917 av_log(h->s.avctx, AV_LOG_ERROR, "non existing SPS referenced\n");
3920 h->sps = *h0->sps_buffers[h->pps.sps_id];
3922 if(h == h0 && h->dequant_coeff_pps != pps_id){
3923 h->dequant_coeff_pps = pps_id;
3924 init_dequant_tables(h);
3927 s->mb_width= h->sps.mb_width;
3928 s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
3930 h->b_stride= s->mb_width*4;
3931 h->b8_stride= s->mb_width*2;
3933 s->width = 16*s->mb_width - 2*(h->sps.crop_left + h->sps.crop_right );
3934 if(h->sps.frame_mbs_only_flag)
3935 s->height= 16*s->mb_height - 2*(h->sps.crop_top + h->sps.crop_bottom);
3937 s->height= 16*s->mb_height - 4*(h->sps.crop_top + h->sps.crop_bottom); //FIXME recheck
3939 if (s->context_initialized
3940 && ( s->width != s->avctx->width || s->height != s->avctx->height)) {
3942 return -1; // width / height changed during parallelized decoding
3946 if (!s->context_initialized) {
3948 return -1; // we cant (re-)initialize context during parallel decoding
3949 if (MPV_common_init(s) < 0)
3953 init_scan_tables(h);
3956 for(i = 1; i < s->avctx->thread_count; i++) {
3958 c = h->thread_context[i] = av_malloc(sizeof(H264Context));
3959 memcpy(c, h, sizeof(MpegEncContext));
3960 memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
3963 init_scan_tables(c);
3967 for(i = 0; i < s->avctx->thread_count; i++)
3968 if(context_init(h->thread_context[i]) < 0)
3971 s->avctx->width = s->width;
3972 s->avctx->height = s->height;
3973 s->avctx->sample_aspect_ratio= h->sps.sar;
3974 if(!s->avctx->sample_aspect_ratio.den)
3975 s->avctx->sample_aspect_ratio.den = 1;
3977 if(h->sps.timing_info_present_flag){
3978 s->avctx->time_base= (AVRational){h->sps.num_units_in_tick * 2, h->sps.time_scale};
3979 if(h->x264_build > 0 && h->x264_build < 44)
3980 s->avctx->time_base.den *= 2;
3981 av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
3982 s->avctx->time_base.num, s->avctx->time_base.den, 1<<30);
3986 h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
3989 h->mb_aff_frame = 0;
3990 last_pic_structure = s0->picture_structure;
3991 if(h->sps.frame_mbs_only_flag){
3992 s->picture_structure= PICT_FRAME;
3994 if(get_bits1(&s->gb)) { //field_pic_flag
3995 s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
3997 s->picture_structure= PICT_FRAME;
3998 h->mb_aff_frame = h->sps.mb_aff;
4002 if(h0->current_slice == 0){
4003 /* See if we have a decoded first field looking for a pair... */
4004 if (s0->first_field) {
4005 assert(s0->current_picture_ptr);
4006 assert(s0->current_picture_ptr->data[0]);
4007 assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
4009 /* figure out if we have a complementary field pair */
4010 if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
4012 * Previous field is unmatched. Don't display it, but let it
4013 * remain for reference if marked as such.
4015 s0->current_picture_ptr = NULL;
4016 s0->first_field = FIELD_PICTURE;
4019 if (h->nal_ref_idc &&
4020 s0->current_picture_ptr->reference &&
4021 s0->current_picture_ptr->frame_num != h->frame_num) {
4023 * This and previous field were reference, but had
4024 * different frame_nums. Consider this field first in
4025 * pair. Throw away previous field except for reference
4028 s0->first_field = 1;
4029 s0->current_picture_ptr = NULL;
4032 /* Second field in complementary pair */
4033 s0->first_field = 0;
4038 /* Frame or first field in a potentially complementary pair */
4039 assert(!s0->current_picture_ptr);
4040 s0->first_field = FIELD_PICTURE;
4043 if((!FIELD_PICTURE || s0->first_field) && frame_start(h) < 0) {
4044 s0->first_field = 0;
4051 s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
4053 assert(s->mb_num == s->mb_width * s->mb_height);
4054 if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
4055 first_mb_in_slice >= s->mb_num){
4056 av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
4059 s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
4060 s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
4061 if (s->picture_structure == PICT_BOTTOM_FIELD)
4062 s->resync_mb_y = s->mb_y = s->mb_y + 1;
4063 assert(s->mb_y < s->mb_height);
4065 if(s->picture_structure==PICT_FRAME){
4066 h->curr_pic_num= h->frame_num;
4067 h->max_pic_num= 1<< h->sps.log2_max_frame_num;
4069 h->curr_pic_num= 2*h->frame_num + 1;
4070 h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
4073 if(h->nal_unit_type == NAL_IDR_SLICE){
4074 get_ue_golomb(&s->gb); /* idr_pic_id */
4077 if(h->sps.poc_type==0){
4078 h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
4080 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
4081 h->delta_poc_bottom= get_se_golomb(&s->gb);
4085 if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
4086 h->delta_poc[0]= get_se_golomb(&s->gb);
4088 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
4089 h->delta_poc[1]= get_se_golomb(&s->gb);
4094 if(h->pps.redundant_pic_cnt_present){
4095 h->redundant_pic_count= get_ue_golomb(&s->gb);
4098 //set defaults, might be overriden a few line later
4099 h->ref_count[0]= h->pps.ref_count[0];
4100 h->ref_count[1]= h->pps.ref_count[1];
4102 if(h->slice_type == P_TYPE || h->slice_type == SP_TYPE || h->slice_type == B_TYPE){
4103 if(h->slice_type == B_TYPE){
4104 h->direct_spatial_mv_pred= get_bits1(&s->gb);
4105 if(FIELD_OR_MBAFF_PICTURE && h->direct_spatial_mv_pred)
4106 av_log(h->s.avctx, AV_LOG_ERROR, "Interlaced pictures + spatial direct mode is not implemented\n");
4108 num_ref_idx_active_override_flag= get_bits1(&s->gb);
4110 if(num_ref_idx_active_override_flag){
4111 h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
4112 if(h->slice_type==B_TYPE)
4113 h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
4115 if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
4116 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
4117 h->ref_count[0]= h->ref_count[1]= 1;
4121 if(h->slice_type == B_TYPE)
4128 if(!default_ref_list_done){
4129 fill_default_ref_list(h);
4132 if(decode_ref_pic_list_reordering(h) < 0)
4135 if( (h->pps.weighted_pred && (h->slice_type == P_TYPE || h->slice_type == SP_TYPE ))
4136 || (h->pps.weighted_bipred_idc==1 && h->slice_type==B_TYPE ) )
4137 pred_weight_table(h);
4138 else if(h->pps.weighted_bipred_idc==2 && h->slice_type==B_TYPE)
4139 implicit_weight_table(h);
4144 decode_ref_pic_marking(h0, &s->gb);
4147 fill_mbaff_ref_list(h);
4149 if( h->slice_type != I_TYPE && h->slice_type != SI_TYPE && h->pps.cabac ){
4150 tmp = get_ue_golomb(&s->gb);
4152 av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
4155 h->cabac_init_idc= tmp;
4158 h->last_qscale_diff = 0;
4159 tmp = h->pps.init_qp + get_se_golomb(&s->gb);
4161 av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
4165 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
4166 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
4167 //FIXME qscale / qp ... stuff
4168 if(h->slice_type == SP_TYPE){
4169 get_bits1(&s->gb); /* sp_for_switch_flag */
4171 if(h->slice_type==SP_TYPE || h->slice_type == SI_TYPE){
4172 get_se_golomb(&s->gb); /* slice_qs_delta */
4175 h->deblocking_filter = 1;
4176 h->slice_alpha_c0_offset = 0;
4177 h->slice_beta_offset = 0;
4178 if( h->pps.deblocking_filter_parameters_present ) {
4179 tmp= get_ue_golomb(&s->gb);
4181 av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
4184 h->deblocking_filter= tmp;
4185 if(h->deblocking_filter < 2)
4186 h->deblocking_filter^= 1; // 1<->0
4188 if( h->deblocking_filter ) {
4189 h->slice_alpha_c0_offset = get_se_golomb(&s->gb) << 1;
4190 h->slice_beta_offset = get_se_golomb(&s->gb) << 1;
4194 if( s->avctx->skip_loop_filter >= AVDISCARD_ALL
4195 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type != I_TYPE)
4196 ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR && h->slice_type == B_TYPE)
4197 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
4198 h->deblocking_filter= 0;
4200 if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
4201 if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
4202 /* Cheat slightly for speed:
4203 Dont bother to deblock across slices */
4204 h->deblocking_filter = 2;
4206 h0->max_contexts = 1;
4207 if(!h0->single_decode_warning) {
4208 av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
4209 h0->single_decode_warning = 1;
4212 return 1; // deblocking switched inside frame
4217 if( h->pps.num_slice_groups > 1 && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
4218 slice_group_change_cycle= get_bits(&s->gb, ?);
4221 h0->last_slice_type = slice_type;
4222 h->slice_num = ++h0->current_slice;
4224 h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
4225 h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
4227 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
4228 av_log(h->s.avctx, AV_LOG_DEBUG, "slice:%d %s mb:%d %c pps:%u frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d:%d:%d weight:%d%s\n",
4230 (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
4232 av_get_pict_type_char(h->slice_type),
4233 pps_id, h->frame_num,
4234 s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
4235 h->ref_count[0], h->ref_count[1],
4237 h->deblocking_filter, h->slice_alpha_c0_offset/2, h->slice_beta_offset/2,
4239 h->use_weight==1 && h->use_weight_chroma ? "c" : ""
4243 if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
4244 s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
4245 s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
4247 s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
4248 s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
4257 static inline int get_level_prefix(GetBitContext *gb){
4261 OPEN_READER(re, gb);
4262 UPDATE_CACHE(re, gb);
4263 buf=GET_CACHE(re, gb);
4265 log= 32 - av_log2(buf);
4267 print_bin(buf>>(32-log), log);
4268 av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d lpr @%5d in %s get_level_prefix\n", buf>>(32-log), log, log-1, get_bits_count(gb), __FILE__);
4271 LAST_SKIP_BITS(re, gb, log);
4272 CLOSE_READER(re, gb);
4277 static inline int get_dct8x8_allowed(H264Context *h){
4280 if(!IS_SUB_8X8(h->sub_mb_type[i])
4281 || (!h->sps.direct_8x8_inference_flag && IS_DIRECT(h->sub_mb_type[i])))
4288 * decodes a residual block.
4289 * @param n block index
4290 * @param scantable scantable
4291 * @param max_coeff number of coefficients in the block
4292 * @return <0 if an error occured
4294 static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff){
4295 MpegEncContext * const s = &h->s;
4296 static const int coeff_token_table_index[17]= {0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3};
4298 int zeros_left, coeff_num, coeff_token, total_coeff, i, j, trailing_ones, run_before;
4300 //FIXME put trailing_onex into the context
4302 if(n == CHROMA_DC_BLOCK_INDEX){
4303 coeff_token= get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1);
4304 total_coeff= coeff_token>>2;
4306 if(n == LUMA_DC_BLOCK_INDEX){
4307 total_coeff= pred_non_zero_count(h, 0);
4308 coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
4309 total_coeff= coeff_token>>2;
4311 total_coeff= pred_non_zero_count(h, n);
4312 coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2);
4313 total_coeff= coeff_token>>2;
4314 h->non_zero_count_cache[ scan8[n] ]= total_coeff;
4318 //FIXME set last_non_zero?
4322 if(total_coeff > (unsigned)max_coeff) {
4323 av_log(h->s.avctx, AV_LOG_ERROR, "corrupted macroblock %d %d (total_coeff=%d)\n", s->mb_x, s->mb_y, total_coeff);
4327 trailing_ones= coeff_token&3;
4328 tprintf(h->s.avctx, "trailing:%d, total:%d\n", trailing_ones, total_coeff);
4329 assert(total_coeff<=16);
4331 for(i=0; i<trailing_ones; i++){
4332 level[i]= 1 - 2*get_bits1(gb);
4336 int level_code, mask;
4337 int suffix_length = total_coeff > 10 && trailing_ones < 3;
4338 int prefix= get_level_prefix(gb);
4340 //first coefficient has suffix_length equal to 0 or 1
4341 if(prefix<14){ //FIXME try to build a large unified VLC table for all this
4343 level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
4345 level_code= (prefix<<suffix_length); //part
4346 }else if(prefix==14){
4348 level_code= (prefix<<suffix_length) + get_bits(gb, suffix_length); //part
4350 level_code= prefix + get_bits(gb, 4); //part
4351 }else if(prefix==15){
4352 level_code= (prefix<<suffix_length) + get_bits(gb, 12); //part
4353 if(suffix_length==0) level_code+=15; //FIXME doesn't make (much)sense
4355 av_log(h->s.avctx, AV_LOG_ERROR, "prefix too large at %d %d\n", s->mb_x, s->mb_y);
4359 if(trailing_ones < 3) level_code += 2;
4364 mask= -(level_code&1);
4365 level[i]= (((2+level_code)>>1) ^ mask) - mask;
4368 //remaining coefficients have suffix_length > 0
4369 for(;i<total_coeff;i++) {
4370 static const int suffix_limit[7] = {0,5,11,23,47,95,INT_MAX };
4371 prefix = get_level_prefix(gb);
4373 level_code = (prefix<<suffix_length) + get_bits(gb, suffix_length);
4374 }else if(prefix==15){
4375 level_code = (prefix<<suffix_length) + get_bits(gb, 12);
4377 av_log(h->s.avctx, AV_LOG_ERROR, "prefix too large at %d %d\n", s->mb_x, s->mb_y);
4380 mask= -(level_code&1);
4381 level[i]= (((2+level_code)>>1) ^ mask) - mask;
4382 if(level_code > suffix_limit[suffix_length])
4387 if(total_coeff == max_coeff)
4390 if(n == CHROMA_DC_BLOCK_INDEX)
4391 zeros_left= get_vlc2(gb, chroma_dc_total_zeros_vlc[ total_coeff-1 ].table, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1);
4393 zeros_left= get_vlc2(gb, total_zeros_vlc[ total_coeff-1 ].table, TOTAL_ZEROS_VLC_BITS, 1);
4396 coeff_num = zeros_left + total_coeff - 1;
4397 j = scantable[coeff_num];
4399 block[j] = level[0];
4400 for(i=1;i<total_coeff;i++) {
4403 else if(zeros_left < 7){
4404 run_before= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
4406 run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
4408 zeros_left -= run_before;
4409 coeff_num -= 1 + run_before;
4410 j= scantable[ coeff_num ];
4415 block[j] = (level[0] * qmul[j] + 32)>>6;
4416 for(i=1;i<total_coeff;i++) {
4419 else if(zeros_left < 7){
4420 run_before= get_vlc2(gb, run_vlc[zeros_left-1].table, RUN_VLC_BITS, 1);
4422 run_before= get_vlc2(gb, run7_vlc.table, RUN7_VLC_BITS, 2);
4424 zeros_left -= run_before;
4425 coeff_num -= 1 + run_before;
4426 j= scantable[ coeff_num ];
4428 block[j]= (level[i] * qmul[j] + 32)>>6;
4433 av_log(h->s.avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", s->mb_x, s->mb_y);
4440 static void predict_field_decoding_flag(H264Context *h){
4441 MpegEncContext * const s = &h->s;
4442 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
4443 int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
4444 ? s->current_picture.mb_type[mb_xy-1]
4445 : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
4446 ? s->current_picture.mb_type[mb_xy-s->mb_stride]
4448 h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
4452 * decodes a P_SKIP or B_SKIP macroblock
4454 static void decode_mb_skip(H264Context *h){
4455 MpegEncContext * const s = &h->s;
4456 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
4459 memset(h->non_zero_count[mb_xy], 0, 16);
4460 memset(h->non_zero_count_cache + 8, 0, 8*5); //FIXME ugly, remove pfui
4463 mb_type|= MB_TYPE_INTERLACED;
4465 if( h->slice_type == B_TYPE )
4467 // just for fill_caches. pred_direct_motion will set the real mb_type
4468 mb_type|= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2|MB_TYPE_SKIP;
4470 fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ...
4471 pred_direct_motion(h, &mb_type);
4472 mb_type|= MB_TYPE_SKIP;
4477 mb_type|= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P1L0|MB_TYPE_SKIP;
4479 fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ...
4480 pred_pskip_motion(h, &mx, &my);
4481 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
4482 fill_rectangle( h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mx,my), 4);
4485 write_back_motion(h, mb_type);
4486 s->current_picture.mb_type[mb_xy]= mb_type;
4487 s->current_picture.qscale_table[mb_xy]= s->qscale;
4488 h->slice_table[ mb_xy ]= h->slice_num;
4489 h->prev_mb_skipped= 1;
4493 * decodes a macroblock
4494 * @returns 0 if ok, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
4496 static int decode_mb_cavlc(H264Context *h){
4497 MpegEncContext * const s = &h->s;
4498 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
4499 int partition_count;
4500 unsigned int mb_type, cbp;
4501 int dct8x8_allowed= h->pps.transform_8x8_mode;
4503 s->dsp.clear_blocks(h->mb); //FIXME avoid if already clear (move after skip handlong?
4505 tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
4506 cbp = 0; /* avoid warning. FIXME: find a solution without slowing
4508 if(h->slice_type != I_TYPE && h->slice_type != SI_TYPE){
4509 if(s->mb_skip_run==-1)
4510 s->mb_skip_run= get_ue_golomb(&s->gb);
4512 if (s->mb_skip_run--) {
4513 if(FRAME_MBAFF && (s->mb_y&1) == 0){
4514 if(s->mb_skip_run==0)
4515 h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
4517 predict_field_decoding_flag(h);
4524 if( (s->mb_y&1) == 0 )
4525 h->mb_mbaff = h->mb_field_decoding_flag = get_bits1(&s->gb);
4527 h->mb_field_decoding_flag= (s->picture_structure!=PICT_FRAME);
4529 h->prev_mb_skipped= 0;
4531 mb_type= get_ue_golomb(&s->gb);
4532 if(h->slice_type == B_TYPE){
4534 partition_count= b_mb_type_info[mb_type].partition_count;
4535 mb_type= b_mb_type_info[mb_type].type;
4538 goto decode_intra_mb;
4540 }else if(h->slice_type == P_TYPE /*|| h->slice_type == SP_TYPE */){
4542 partition_count= p_mb_type_info[mb_type].partition_count;
4543 mb_type= p_mb_type_info[mb_type].type;
4546 goto decode_intra_mb;
4549 assert(h->slice_type == I_TYPE);
4552 av_log(h->s.avctx, AV_LOG_ERROR, "mb_type %d in %c slice too large at %d %d\n", mb_type, av_get_pict_type_char(h->slice_type), s->mb_x, s->mb_y);
4556 cbp= i_mb_type_info[mb_type].cbp;
4557 h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode;
4558 mb_type= i_mb_type_info[mb_type].type;
4562 mb_type |= MB_TYPE_INTERLACED;
4564 h->slice_table[ mb_xy ]= h->slice_num;
4566 if(IS_INTRA_PCM(mb_type)){
4569 // We assume these blocks are very rare so we do not optimize it.
4570 align_get_bits(&s->gb);
4572 // The pixels are stored in the same order as levels in h->mb array.
4573 for(y=0; y<16; y++){
4574 const int index= 4*(y&3) + 32*((y>>2)&1) + 128*(y>>3);
4575 for(x=0; x<16; x++){
4576 tprintf(s->avctx, "LUMA ICPM LEVEL (%3d)\n", show_bits(&s->gb, 8));
4577 h->mb[index + (x&3) + 16*((x>>2)&1) + 64*(x>>3)]= get_bits(&s->gb, 8);
4581 const int index= 256 + 4*(y&3) + 32*(y>>2);
4583 tprintf(s->avctx, "CHROMA U ICPM LEVEL (%3d)\n", show_bits(&s->gb, 8));
4584 h->mb[index + (x&3) + 16*(x>>2)]= get_bits(&s->gb, 8);
4588 const int index= 256 + 64 + 4*(y&3) + 32*(y>>2);
4590 tprintf(s->avctx, "CHROMA V ICPM LEVEL (%3d)\n", show_bits(&s->gb, 8));
4591 h->mb[index + (x&3) + 16*(x>>2)]= get_bits(&s->gb, 8);
4595 // In deblocking, the quantizer is 0
4596 s->current_picture.qscale_table[mb_xy]= 0;
4597 h->chroma_qp[0] = get_chroma_qp(h, 0, 0);
4598 h->chroma_qp[1] = get_chroma_qp(h, 1, 0);
4599 // All coeffs are present
4600 memset(h->non_zero_count[mb_xy], 16, 16);
4602 s->current_picture.mb_type[mb_xy]= mb_type;
4607 h->ref_count[0] <<= 1;
4608 h->ref_count[1] <<= 1;
4611 fill_caches(h, mb_type, 0);
4614 if(IS_INTRA(mb_type)){
4616 // init_top_left_availability(h);
4617 if(IS_INTRA4x4(mb_type)){
4620 if(dct8x8_allowed && get_bits1(&s->gb)){
4621 mb_type |= MB_TYPE_8x8DCT;
4625 // fill_intra4x4_pred_table(h);
4626 for(i=0; i<16; i+=di){
4627 int mode= pred_intra_mode(h, i);
4629 if(!get_bits1(&s->gb)){
4630 const int rem_mode= get_bits(&s->gb, 3);
4631 mode = rem_mode + (rem_mode >= mode);
4635 fill_rectangle( &h->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1 );
4637 h->intra4x4_pred_mode_cache[ scan8[i] ] = mode;
4639 write_back_intra_pred_mode(h);
4640 if( check_intra4x4_pred_mode(h) < 0)
4643 h->intra16x16_pred_mode= check_intra_pred_mode(h, h->intra16x16_pred_mode);
4644 if(h->intra16x16_pred_mode < 0)
4648 pred_mode= check_intra_pred_mode(h, get_ue_golomb(&s->gb));
4651 h->chroma_pred_mode= pred_mode;
4652 }else if(partition_count==4){
4653 int i, j, sub_partition_count[4], list, ref[2][4];
4655 if(h->slice_type == B_TYPE){
4657 h->sub_mb_type[i]= get_ue_golomb(&s->gb);
4658 if(h->sub_mb_type[i] >=13){
4659 av_log(h->s.avctx, AV_LOG_ERROR, "B sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
4662 sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
4663 h->sub_mb_type[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].type;
4665 if( IS_DIRECT(h->sub_mb_type[0]) || IS_DIRECT(h->sub_mb_type[1])
4666 || IS_DIRECT(h->sub_mb_type[2]) || IS_DIRECT(h->sub_mb_type[3])) {
4667 pred_direct_motion(h, &mb_type);
4668 h->ref_cache[0][scan8[4]] =
4669 h->ref_cache[1][scan8[4]] =
4670 h->ref_cache[0][scan8[12]] =
4671 h->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE;
4674 assert(h->slice_type == P_TYPE || h->slice_type == SP_TYPE); //FIXME SP correct ?
4676 h->sub_mb_type[i]= get_ue_golomb(&s->gb);
4677 if(h->sub_mb_type[i] >=4){
4678 av_log(h->s.avctx, AV_LOG_ERROR, "P sub_mb_type %u out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y);
4681 sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
4682 h->sub_mb_type[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].type;
4686 for(list=0; list<h->list_count; list++){
4687 int ref_count= IS_REF0(mb_type) ? 1 : h->ref_count[list];
4689 if(IS_DIRECT(h->sub_mb_type[i])) continue;
4690 if(IS_DIR(h->sub_mb_type[i], 0, list)){
4691 unsigned int tmp = get_te0_golomb(&s->gb, ref_count); //FIXME init to 0 before and skip?
4693 av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", tmp);
4705 dct8x8_allowed = get_dct8x8_allowed(h);
4707 for(list=0; list<h->list_count; list++){
4709 if(IS_DIRECT(h->sub_mb_type[i])) {
4710 h->ref_cache[list][ scan8[4*i] ] = h->ref_cache[list][ scan8[4*i]+1 ];
4713 h->ref_cache[list][ scan8[4*i] ]=h->ref_cache[list][ scan8[4*i]+1 ]=
4714 h->ref_cache[list][ scan8[4*i]+8 ]=h->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i];
4716 if(IS_DIR(h->sub_mb_type[i], 0, list)){
4717 const int sub_mb_type= h->sub_mb_type[i];
4718 const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1;
4719 for(j=0; j<sub_partition_count[i]; j++){
4721 const int index= 4*i + block_width*j;
4722 int16_t (* mv_cache)[2]= &h->mv_cache[list][ scan8[index] ];
4723 pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mx, &my);
4724 mx += get_se_golomb(&s->gb);
4725 my += get_se_golomb(&s->gb);
4726 tprintf(s->avctx, "final mv:%d %d\n", mx, my);
4728 if(IS_SUB_8X8(sub_mb_type)){
4730 mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx;
4732 mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my;
4733 }else if(IS_SUB_8X4(sub_mb_type)){
4734 mv_cache[ 1 ][0]= mx;
4735 mv_cache[ 1 ][1]= my;
4736 }else if(IS_SUB_4X8(sub_mb_type)){
4737 mv_cache[ 8 ][0]= mx;
4738 mv_cache[ 8 ][1]= my;
4740 mv_cache[ 0 ][0]= mx;
4741 mv_cache[ 0 ][1]= my;
4744 uint32_t *p= (uint32_t *)&h->mv_cache[list][ scan8[4*i] ][0];
4750 }else if(IS_DIRECT(mb_type)){
4751 pred_direct_motion(h, &mb_type);
4752 dct8x8_allowed &= h->sps.direct_8x8_inference_flag;
4754 int list, mx, my, i;
4755 //FIXME we should set ref_idx_l? to 0 if we use that later ...
4756 if(IS_16X16(mb_type)){
4757 for(list=0; list<h->list_count; list++){
4759 if(IS_DIR(mb_type, 0, list)){
4760 val= get_te0_golomb(&s->gb, h->ref_count[list]);
4761 if(val >= h->ref_count[list]){
4762 av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
4766 val= LIST_NOT_USED&0xFF;
4767 fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, val, 1);
4769 for(list=0; list<h->list_count; list++){
4771 if(IS_DIR(mb_type, 0, list)){
4772 pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mx, &my);
4773 mx += get_se_golomb(&s->gb);
4774 my += get_se_golomb(&s->gb);
4775 tprintf(s->avctx, "final mv:%d %d\n", mx, my);
4777 val= pack16to32(mx,my);
4780 fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, val, 4);
4783 else if(IS_16X8(mb_type)){
4784 for(list=0; list<h->list_count; list++){
4787 if(IS_DIR(mb_type, i, list)){
4788 val= get_te0_golomb(&s->gb, h->ref_count[list]);
4789 if(val >= h->ref_count[list]){
4790 av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
4794 val= LIST_NOT_USED&0xFF;
4795 fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 1);
4798 for(list=0; list<h->list_count; list++){
4801 if(IS_DIR(mb_type, i, list)){
4802 pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mx, &my);
4803 mx += get_se_golomb(&s->gb);
4804 my += get_se_golomb(&s->gb);
4805 tprintf(s->avctx, "final mv:%d %d\n", mx, my);
4807 val= pack16to32(mx,my);
4810 fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 4);
4814 assert(IS_8X16(mb_type));
4815 for(list=0; list<h->list_count; list++){
4818 if(IS_DIR(mb_type, i, list)){ //FIXME optimize
4819 val= get_te0_golomb(&s->gb, h->ref_count[list]);
4820 if(val >= h->ref_count[list]){
4821 av_log(h->s.avctx, AV_LOG_ERROR, "ref %u overflow\n", val);
4825 val= LIST_NOT_USED&0xFF;
4826 fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 1);
4829 for(list=0; list<h->list_count; list++){
4832 if(IS_DIR(mb_type, i, list)){
4833 pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mx, &my);
4834 mx += get_se_golomb(&s->gb);
4835 my += get_se_golomb(&s->gb);
4836 tprintf(s->avctx, "final mv:%d %d\n", mx, my);
4838 val= pack16to32(mx,my);
4841 fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 4);
4847 if(IS_INTER(mb_type))
4848 write_back_motion(h, mb_type);
4850 if(!IS_INTRA16x16(mb_type)){
4851 cbp= get_ue_golomb(&s->gb);
4853 av_log(h->s.avctx, AV_LOG_ERROR, "cbp too large (%u) at %d %d\n", cbp, s->mb_x, s->mb_y);
4857 if(IS_INTRA4x4(mb_type))
4858 cbp= golomb_to_intra4x4_cbp[cbp];
4860 cbp= golomb_to_inter_cbp[cbp];
4864 if(dct8x8_allowed && (cbp&15) && !IS_INTRA(mb_type)){
4865 if(get_bits1(&s->gb))
4866 mb_type |= MB_TYPE_8x8DCT;
4868 s->current_picture.mb_type[mb_xy]= mb_type;
4870 if(cbp || IS_INTRA16x16(mb_type)){
4871 int i8x8, i4x4, chroma_idx;
4873 GetBitContext *gb= IS_INTRA(mb_type) ? h->intra_gb_ptr : h->inter_gb_ptr;
4874 const uint8_t *scan, *scan8x8, *dc_scan;
4876 // fill_non_zero_count_cache(h);
4878 if(IS_INTERLACED(mb_type)){
4879 scan8x8= s->qscale ? h->field_scan8x8_cavlc : h->field_scan8x8_cavlc_q0;
4880 scan= s->qscale ? h->field_scan : h->field_scan_q0;
4881 dc_scan= luma_dc_field_scan;
4883 scan8x8= s->qscale ? h->zigzag_scan8x8_cavlc : h->zigzag_scan8x8_cavlc_q0;
4884 scan= s->qscale ? h->zigzag_scan : h->zigzag_scan_q0;
4885 dc_scan= luma_dc_zigzag_scan;
4888 dquant= get_se_golomb(&s->gb);
4890 if( dquant > 25 || dquant < -26 ){
4891 av_log(h->s.avctx, AV_LOG_ERROR, "dquant out of range (%d) at %d %d\n", dquant, s->mb_x, s->mb_y);
4895 s->qscale += dquant;
4896 if(((unsigned)s->qscale) > 51){
4897 if(s->qscale<0) s->qscale+= 52;
4898 else s->qscale-= 52;
4901 h->chroma_qp[0]= get_chroma_qp(h, 0, s->qscale);
4902 h->chroma_qp[1]= get_chroma_qp(h, 1, s->qscale);
4903 if(IS_INTRA16x16(mb_type)){
4904 if( decode_residual(h, h->intra_gb_ptr, h->mb, LUMA_DC_BLOCK_INDEX, dc_scan, h->dequant4_coeff[0][s->qscale], 16) < 0){
4905 return -1; //FIXME continue if partitioned and other return -1 too
4908 assert((cbp&15) == 0 || (cbp&15) == 15);
4911 for(i8x8=0; i8x8<4; i8x8++){
4912 for(i4x4=0; i4x4<4; i4x4++){
4913 const int index= i4x4 + 4*i8x8;
4914 if( decode_residual(h, h->intra_gb_ptr, h->mb + 16*index, index, scan + 1, h->dequant4_coeff[0][s->qscale], 15) < 0 ){
4920 fill_rectangle(&h->non_zero_count_cache[scan8[0]], 4, 4, 8, 0, 1);
4923 for(i8x8=0; i8x8<4; i8x8++){
4924 if(cbp & (1<<i8x8)){
4925 if(IS_8x8DCT(mb_type)){
4926 DCTELEM *buf = &h->mb[64*i8x8];
4928 for(i4x4=0; i4x4<4; i4x4++){
4929 if( decode_residual(h, gb, buf, i4x4+4*i8x8, scan8x8+16*i4x4,
4930 h->dequant8_coeff[IS_INTRA( mb_type ) ? 0:1][s->qscale], 16) <0 )
4933 nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
4934 nnz[0] += nnz[1] + nnz[8] + nnz[9];
4936 for(i4x4=0; i4x4<4; i4x4++){
4937 const int index= i4x4 + 4*i8x8;
4939 if( decode_residual(h, gb, h->mb + 16*index, index, scan, h->dequant4_coeff[IS_INTRA( mb_type ) ? 0:3][s->qscale], 16) <0 ){
4945 uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
4946 nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0;
4952 for(chroma_idx=0; chroma_idx<2; chroma_idx++)
4953 if( decode_residual(h, gb, h->mb + 256 + 16*4*chroma_idx, CHROMA_DC_BLOCK_INDEX, chroma_dc_scan, NULL, 4) < 0){
4959 for(chroma_idx=0; chroma_idx<2; chroma_idx++){
4960 const uint32_t *qmul = h->dequant4_coeff[chroma_idx+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp[chroma_idx]];
4961 for(i4x4=0; i4x4<4; i4x4++){
4962 const int index= 16 + 4*chroma_idx + i4x4;
4963 if( decode_residual(h, gb, h->mb + 16*index, index, scan + 1, qmul, 15) < 0){
4969 uint8_t * const nnz= &h->non_zero_count_cache[0];
4970 nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
4971 nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
4974 uint8_t * const nnz= &h->non_zero_count_cache[0];
4975 fill_rectangle(&nnz[scan8[0]], 4, 4, 8, 0, 1);
4976 nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
4977 nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
4979 s->current_picture.qscale_table[mb_xy]= s->qscale;
4980 write_back_non_zero_count(h);
4983 h->ref_count[0] >>= 1;
4984 h->ref_count[1] >>= 1;
4990 static int decode_cabac_field_decoding_flag(H264Context *h) {
4991 MpegEncContext * const s = &h->s;
4992 const int mb_x = s->mb_x;
4993 const int mb_y = s->mb_y & ~1;
4994 const int mba_xy = mb_x - 1 + mb_y *s->mb_stride;
4995 const int mbb_xy = mb_x + (mb_y-2)*s->mb_stride;
4997 unsigned int ctx = 0;
4999 if( h->slice_table[mba_xy] == h->slice_num && IS_INTERLACED( s->current_picture.mb_type[mba_xy] ) ) {
5002 if( h->slice_table[mbb_xy] == h->slice_num && IS_INTERLACED( s->current_picture.mb_type[mbb_xy] ) ) {
5006 return get_cabac_noinline( &h->cabac, &h->cabac_state[70 + ctx] );
5009 static int decode_cabac_intra_mb_type(H264Context *h, int ctx_base, int intra_slice) {
5010 uint8_t *state= &h->cabac_state[ctx_base];
5014 MpegEncContext * const s = &h->s;
5015 const int mba_xy = h->left_mb_xy[0];
5016 const int mbb_xy = h->top_mb_xy;
5018 if( h->slice_table[mba_xy] == h->slice_num && !IS_INTRA4x4( s->current_picture.mb_type[mba_xy] ) )
5020 if( h->slice_table[mbb_xy] == h->slice_num && !IS_INTRA4x4( s->current_picture.mb_type[mbb_xy] ) )
5022 if( get_cabac_noinline( &h->cabac, &state[ctx] ) == 0 )
5023 return 0; /* I4x4 */
5026 if( get_cabac_noinline( &h->cabac, &state[0] ) == 0 )
5027 return 0; /* I4x4 */
5030 if( get_cabac_terminate( &h->cabac ) )
5031 return 25; /* PCM */
5033 mb_type = 1; /* I16x16 */
5034 mb_type += 12 * get_cabac_noinline( &h->cabac, &state[1] ); /* cbp_luma != 0 */
5035 if( get_cabac_noinline( &h->cabac, &state[2] ) ) /* cbp_chroma */
5036 mb_type += 4 + 4 * get_cabac_noinline( &h->cabac, &state[2+intra_slice] );
5037 mb_type += 2 * get_cabac_noinline( &h->cabac, &state[3+intra_slice] );
5038 mb_type += 1 * get_cabac_noinline( &h->cabac, &state[3+2*intra_slice] );
5042 static int decode_cabac_mb_type( H264Context *h ) {
5043 MpegEncContext * const s = &h->s;
5045 if( h->slice_type == I_TYPE ) {
5046 return decode_cabac_intra_mb_type(h, 3, 1);
5047 } else if( h->slice_type == P_TYPE ) {
5048 if( get_cabac_noinline( &h->cabac, &h->cabac_state[14] ) == 0 ) {
5050 if( get_cabac_noinline( &h->cabac, &h->cabac_state[15] ) == 0 ) {
5051 /* P_L0_D16x16, P_8x8 */
5052 return 3 * get_cabac_noinline( &h->cabac, &h->cabac_state[16] );
5054 /* P_L0_D8x16, P_L0_D16x8 */
5055 return 2 - get_cabac_noinline( &h->cabac, &h->cabac_state[17] );
5058 return decode_cabac_intra_mb_type(h, 17, 0) + 5;
5060 } else if( h->slice_type == B_TYPE ) {
5061 const int mba_xy = h->left_mb_xy[0];
5062 const int mbb_xy = h->top_mb_xy;
5066 if( h->slice_table[mba_xy] == h->slice_num && !IS_DIRECT( s->current_picture.mb_type[mba_xy] ) )
5068 if( h->slice_table[mbb_xy] == h->slice_num && !IS_DIRECT( s->current_picture.mb_type[mbb_xy] ) )
5071 if( !get_cabac_noinline( &h->cabac, &h->cabac_state[27+ctx] ) )
5072 return 0; /* B_Direct_16x16 */
5074 if( !get_cabac_noinline( &h->cabac, &h->cabac_state[27+3] ) ) {
5075 return 1 + get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ); /* B_L[01]_16x16 */
5078 bits = get_cabac_noinline( &h->cabac, &h->cabac_state[27+4] ) << 3;
5079 bits|= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ) << 2;
5080 bits|= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] ) << 1;
5081 bits|= get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] );
5083 return bits + 3; /* B_Bi_16x16 through B_L1_L0_16x8 */
5084 else if( bits == 13 ) {
5085 return decode_cabac_intra_mb_type(h, 32, 0) + 23;
5086 } else if( bits == 14 )
5087 return 11; /* B_L1_L0_8x16 */
5088 else if( bits == 15 )
5089 return 22; /* B_8x8 */
5091 bits= ( bits<<1 ) | get_cabac_noinline( &h->cabac, &h->cabac_state[27+5] );
5092 return bits - 4; /* B_L0_Bi_* through B_Bi_Bi_* */
5094 /* TODO SI/SP frames? */
5099 static int decode_cabac_mb_skip( H264Context *h, int mb_x, int mb_y ) {
5100 MpegEncContext * const s = &h->s;
5104 if(FRAME_MBAFF){ //FIXME merge with the stuff in fill_caches?
5105 int mb_xy = mb_x + (mb_y&~1)*s->mb_stride;
5108 && h->slice_table[mba_xy] == h->slice_num
5109 && MB_FIELD == !!IS_INTERLACED( s->current_picture.mb_type[mba_xy] ) )
5110 mba_xy += s->mb_stride;
5112 mbb_xy = mb_xy - s->mb_stride;
5114 && h->slice_table[mbb_xy] == h->slice_num
5115 && IS_INTERLACED( s->current_picture.mb_type[mbb_xy] ) )
5116 mbb_xy -= s->mb_stride;
5118 mbb_xy = mb_x + (mb_y-1)*s->mb_stride;
5120 int mb_xy = mb_x + mb_y*s->mb_stride;
5122 mbb_xy = mb_xy - (s->mb_stride << FIELD_PICTURE);
5125 if( h->slice_table[mba_xy] == h->slice_num && !IS_SKIP( s->current_picture.mb_type[mba_xy] ))
5127 if( h->slice_table[mbb_xy] == h->slice_num && !IS_SKIP( s->current_picture.mb_type[mbb_xy] ))
5130 if( h->slice_type == B_TYPE )
5132 return get_cabac_noinline( &h->cabac, &h->cabac_state[11+ctx] );
5135 static int decode_cabac_mb_intra4x4_pred_mode( H264Context *h, int pred_mode ) {
5138 if( get_cabac( &h->cabac, &h->cabac_state[68] ) )
5141 mode += 1 * get_cabac( &h->cabac, &h->cabac_state[69] );
5142 mode += 2 * get_cabac( &h->cabac, &h->cabac_state[69] );
5143 mode += 4 * get_cabac( &h->cabac, &h->cabac_state[69] );
5145 if( mode >= pred_mode )
5151 static int decode_cabac_mb_chroma_pre_mode( H264Context *h) {
5152 const int mba_xy = h->left_mb_xy[0];
5153 const int mbb_xy = h->top_mb_xy;
5157 /* No need to test for IS_INTRA4x4 and IS_INTRA16x16, as we set chroma_pred_mode_table to 0 */
5158 if( h->slice_table[mba_xy] == h->slice_num && h->chroma_pred_mode_table[mba_xy] != 0 )
5161 if( h->slice_table[mbb_xy] == h->slice_num && h->chroma_pred_mode_table[mbb_xy] != 0 )
5164 if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+ctx] ) == 0 )
5167 if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+3] ) == 0 )
5169 if( get_cabac_noinline( &h->cabac, &h->cabac_state[64+3] ) == 0 )
5175 static int decode_cabac_mb_cbp_luma( H264Context *h) {
5176 int cbp_b, cbp_a, ctx, cbp = 0;
5178 cbp_a = h->slice_table[h->left_mb_xy[0]] == h->slice_num ? h->left_cbp : -1;
5179 cbp_b = h->slice_table[h->top_mb_xy] == h->slice_num ? h->top_cbp : -1;
5181 ctx = !(cbp_a & 0x02) + 2 * !(cbp_b & 0x04);
5182 cbp |= get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]);
5183 ctx = !(cbp & 0x01) + 2 * !(cbp_b & 0x08);
5184 cbp |= get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]) << 1;
5185 ctx = !(cbp_a & 0x08) + 2 * !(cbp & 0x01);
5186 cbp |= get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]) << 2;
5187 ctx = !(cbp & 0x04) + 2 * !(cbp & 0x02);
5188 cbp |= get_cabac_noinline(&h->cabac, &h->cabac_state[73 + ctx]) << 3;
5191 static int decode_cabac_mb_cbp_chroma( H264Context *h) {
5195 cbp_a = (h->left_cbp>>4)&0x03;
5196 cbp_b = (h-> top_cbp>>4)&0x03;
5199 if( cbp_a > 0 ) ctx++;
5200 if( cbp_b > 0 ) ctx += 2;
5201 if( get_cabac_noinline( &h->cabac, &h->cabac_state[77 + ctx] ) == 0 )
5205 if( cbp_a == 2 ) ctx++;
5206 if( cbp_b == 2 ) ctx += 2;
5207 return 1 + get_cabac_noinline( &h->cabac, &h->cabac_state[77 + ctx] );
5209 static int decode_cabac_mb_dqp( H264Context *h) {
5213 if( h->last_qscale_diff != 0 )
5216 while( get_cabac_noinline( &h->cabac, &h->cabac_state[60 + ctx] ) ) {
5222 if(val > 102) //prevent infinite loop
5229 return -(val + 1)/2;
5231 static int decode_cabac_p_mb_sub_type( H264Context *h ) {
5232 if( get_cabac( &h->cabac, &h->cabac_state[21] ) )
5234 if( !get_cabac( &h->cabac, &h->cabac_state[22] ) )
5236 if( get_cabac( &h->cabac, &h->cabac_state[23] ) )
5240 static int decode_cabac_b_mb_sub_type( H264Context *h ) {
5242 if( !get_cabac( &h->cabac, &h->cabac_state[36] ) )
5243 return 0; /* B_Direct_8x8 */
5244 if( !get_cabac( &h->cabac, &h->cabac_state[37] ) )
5245 return 1 + get_cabac( &h->cabac, &h->cabac_state[39] ); /* B_L0_8x8, B_L1_8x8 */
5247 if( get_cabac( &h->cabac, &h->cabac_state[38] ) ) {
5248 if( get_cabac( &h->cabac, &h->cabac_state[39] ) )
5249 return 11 + get_cabac( &h->cabac, &h->cabac_state[39] ); /* B_L1_4x4, B_Bi_4x4 */
5252 type += 2*get_cabac( &h->cabac, &h->cabac_state[39] );
5253 type += get_cabac( &h->cabac, &h->cabac_state[39] );
5257 static inline int decode_cabac_mb_transform_size( H264Context *h ) {
5258 return get_cabac_noinline( &h->cabac, &h->cabac_state[399 + h->neighbor_transform_size] );
5261 static int decode_cabac_mb_ref( H264Context *h, int list, int n ) {
5262 int refa = h->ref_cache[list][scan8[n] - 1];
5263 int refb = h->ref_cache[list][scan8[n] - 8];
5267 if( h->slice_type == B_TYPE) {
5268 if( refa > 0 && !h->direct_cache[scan8[n] - 1] )
5270 if( refb > 0 && !h->direct_cache[scan8[n] - 8] )
5279 while( get_cabac( &h->cabac, &h->cabac_state[54+ctx] ) ) {
5285 if(ref >= 32 /*h->ref_list[list]*/){
5286 av_log(h->s.avctx, AV_LOG_ERROR, "overflow in decode_cabac_mb_ref\n");
5287 return 0; //FIXME we should return -1 and check the return everywhere
5293 static int decode_cabac_mb_mvd( H264Context *h, int list, int n, int l ) {
5294 int amvd = abs( h->mvd_cache[list][scan8[n] - 1][l] ) +
5295 abs( h->mvd_cache[list][scan8[n] - 8][l] );
5296 int ctxbase = (l == 0) ? 40 : 47;
5301 else if( amvd > 32 )
5306 if(!get_cabac(&h->cabac, &h->cabac_state[ctxbase+ctx]))
5311 while( mvd < 9 && get_cabac( &h->cabac, &h->cabac_state[ctxbase+ctx] ) ) {
5319 while( get_cabac_bypass( &h->cabac ) ) {
5323 av_log(h->s.avctx, AV_LOG_ERROR, "overflow in decode_cabac_mb_mvd\n");
5328 if( get_cabac_bypass( &h->cabac ) )
5332 return get_cabac_bypass_sign( &h->cabac, -mvd );
5335 static inline int get_cabac_cbf_ctx( H264Context *h, int cat, int idx ) {
5340 nza = h->left_cbp&0x100;
5341 nzb = h-> top_cbp&0x100;
5342 } else if( cat == 1 || cat == 2 ) {
5343 nza = h->non_zero_count_cache[scan8[idx] - 1];
5344 nzb = h->non_zero_count_cache[scan8[idx] - 8];
5345 } else if( cat == 3 ) {
5346 nza = (h->left_cbp>>(6+idx))&0x01;
5347 nzb = (h-> top_cbp>>(6+idx))&0x01;
5350 nza = h->non_zero_count_cache[scan8[16+idx] - 1];
5351 nzb = h->non_zero_count_cache[scan8[16+idx] - 8];
5360 return ctx + 4 * cat;
5363 static const attribute_used uint8_t last_coeff_flag_offset_8x8[63] = {
5364 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
5365 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
5366 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
5367 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8
5370 static void decode_cabac_residual( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, const uint32_t *qmul, int max_coeff) {
5371 const int mb_xy = h->s.mb_x + h->s.mb_y*h->s.mb_stride;
5372 static const int significant_coeff_flag_offset[2][6] = {
5373 { 105+0, 105+15, 105+29, 105+44, 105+47, 402 },
5374 { 277+0, 277+15, 277+29, 277+44, 277+47, 436 }
5376 static const int last_coeff_flag_offset[2][6] = {
5377 { 166+0, 166+15, 166+29, 166+44, 166+47, 417 },
5378 { 338+0, 338+15, 338+29, 338+44, 338+47, 451 }
5380 static const int coeff_abs_level_m1_offset[6] = {
5381 227+0, 227+10, 227+20, 227+30, 227+39, 426
5383 static const uint8_t significant_coeff_flag_offset_8x8[2][63] = {
5384 { 0, 1, 2, 3, 4, 5, 5, 4, 4, 3, 3, 4, 4, 4, 5, 5,
5385 4, 4, 4, 4, 3, 3, 6, 7, 7, 7, 8, 9,10, 9, 8, 7,
5386 7, 6,11,12,13,11, 6, 7, 8, 9,14,10, 9, 8, 6,11,
5387 12,13,11, 6, 9,14,10, 9,11,12,13,11,14,10,12 },
5388 { 0, 1, 1, 2, 2, 3, 3, 4, 5, 6, 7, 7, 7, 8, 4, 5,
5389 6, 9,10,10, 8,11,12,11, 9, 9,10,10, 8,11,12,11,
5390 9, 9,10,10, 8,11,12,11, 9, 9,10,10, 8,13,13, 9,
5391 9,10,10, 8,13,13, 9, 9,10,10,14,14,14,14,14 }
5397 int coeff_count = 0;
5400 int abslevelgt1 = 0;
5402 uint8_t *significant_coeff_ctx_base;
5403 uint8_t *last_coeff_ctx_base;
5404 uint8_t *abs_level_m1_ctx_base;
5407 #define CABAC_ON_STACK
5409 #ifdef CABAC_ON_STACK
5412 cc.range = h->cabac.range;
5413 cc.low = h->cabac.low;
5414 cc.bytestream= h->cabac.bytestream;
5416 #define CC &h->cabac
5420 /* cat: 0-> DC 16x16 n = 0
5421 * 1-> AC 16x16 n = luma4x4idx
5422 * 2-> Luma4x4 n = luma4x4idx
5423 * 3-> DC Chroma n = iCbCr
5424 * 4-> AC Chroma n = 4 * iCbCr + chroma4x4idx
5425 * 5-> Luma8x8 n = 4 * luma8x8idx
5428 /* read coded block flag */
5430 if( get_cabac( CC, &h->cabac_state[85 + get_cabac_cbf_ctx( h, cat, n ) ] ) == 0 ) {
5431 if( cat == 1 || cat == 2 )
5432 h->non_zero_count_cache[scan8[n]] = 0;
5434 h->non_zero_count_cache[scan8[16+n]] = 0;
5435 #ifdef CABAC_ON_STACK
5436 h->cabac.range = cc.range ;
5437 h->cabac.low = cc.low ;
5438 h->cabac.bytestream= cc.bytestream;
5444 significant_coeff_ctx_base = h->cabac_state
5445 + significant_coeff_flag_offset[MB_FIELD][cat];
5446 last_coeff_ctx_base = h->cabac_state
5447 + last_coeff_flag_offset[MB_FIELD][cat];
5448 abs_level_m1_ctx_base = h->cabac_state
5449 + coeff_abs_level_m1_offset[cat];
5452 #define DECODE_SIGNIFICANCE( coefs, sig_off, last_off ) \
5453 for(last= 0; last < coefs; last++) { \
5454 uint8_t *sig_ctx = significant_coeff_ctx_base + sig_off; \
5455 if( get_cabac( CC, sig_ctx )) { \
5456 uint8_t *last_ctx = last_coeff_ctx_base + last_off; \
5457 index[coeff_count++] = last; \
5458 if( get_cabac( CC, last_ctx ) ) { \
5464 if( last == max_coeff -1 ) {\
5465 index[coeff_count++] = last;\
5467 const uint8_t *sig_off = significant_coeff_flag_offset_8x8[MB_FIELD];
5468 #if defined(ARCH_X86) && defined(HAVE_7REGS) && defined(HAVE_EBX_AVAILABLE) && !defined(BROKEN_RELOCATIONS)
5469 coeff_count= decode_significance_8x8_x86(CC, significant_coeff_ctx_base, index, sig_off);
5471 coeff_count= decode_significance_x86(CC, max_coeff, significant_coeff_ctx_base, index);
5473 DECODE_SIGNIFICANCE( 63, sig_off[last], last_coeff_flag_offset_8x8[last] );
5475 DECODE_SIGNIFICANCE( max_coeff - 1, last, last );
5478 assert(coeff_count > 0);
5481 h->cbp_table[mb_xy] |= 0x100;
5482 else if( cat == 1 || cat == 2 )
5483 h->non_zero_count_cache[scan8[n]] = coeff_count;
5485 h->cbp_table[mb_xy] |= 0x40 << n;
5487 h->non_zero_count_cache[scan8[16+n]] = coeff_count;
5490 fill_rectangle(&h->non_zero_count_cache[scan8[n]], 2, 2, 8, coeff_count, 1);
5493 for( coeff_count--; coeff_count >= 0; coeff_count-- ) {
5494 uint8_t *ctx = (abslevelgt1 != 0 ? 0 : FFMIN( 4, abslevel1 )) + abs_level_m1_ctx_base;
5495 int j= scantable[index[coeff_count]];
5497 if( get_cabac( CC, ctx ) == 0 ) {
5499 block[j] = get_cabac_bypass_sign( CC, -1);
5501 block[j] = (get_cabac_bypass_sign( CC, -qmul[j]) + 32) >> 6;;
5507 ctx = 5 + FFMIN( 4, abslevelgt1 ) + abs_level_m1_ctx_base;
5508 while( coeff_abs < 15 && get_cabac( CC, ctx ) ) {
5512 if( coeff_abs >= 15 ) {
5514 while( get_cabac_bypass( CC ) ) {
5520 coeff_abs += coeff_abs + get_cabac_bypass( CC );
5526 if( get_cabac_bypass( CC ) ) block[j] = -coeff_abs;
5527 else block[j] = coeff_abs;
5529 if( get_cabac_bypass( CC ) ) block[j] = (-coeff_abs * qmul[j] + 32) >> 6;
5530 else block[j] = ( coeff_abs * qmul[j] + 32) >> 6;
5536 #ifdef CABAC_ON_STACK
5537 h->cabac.range = cc.range ;
5538 h->cabac.low = cc.low ;
5539 h->cabac.bytestream= cc.bytestream;
5544 static inline void compute_mb_neighbors(H264Context *h)
5546 MpegEncContext * const s = &h->s;
5547 const int mb_xy = s->mb_x + s->mb_y*s->mb_stride;
5548 h->top_mb_xy = mb_xy - s->mb_stride;
5549 h->left_mb_xy[0] = mb_xy - 1;
5551 const int pair_xy = s->mb_x + (s->mb_y & ~1)*s->mb_stride;
5552 const int top_pair_xy = pair_xy - s->mb_stride;
5553 const int top_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[top_pair_xy]);
5554 const int left_mb_frame_flag = !IS_INTERLACED(s->current_picture.mb_type[pair_xy-1]);
5555 const int curr_mb_frame_flag = !MB_FIELD;
5556 const int bottom = (s->mb_y & 1);
5558 ? !curr_mb_frame_flag // bottom macroblock
5559 : (!curr_mb_frame_flag && !top_mb_frame_flag) // top macroblock
5561 h->top_mb_xy -= s->mb_stride;
5563 if (left_mb_frame_flag != curr_mb_frame_flag) {
5564 h->left_mb_xy[0] = pair_xy - 1;
5566 } else if (FIELD_PICTURE) {
5567 h->top_mb_xy -= s->mb_stride;
5573 * decodes a macroblock
5574 * @returns 0 if ok, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed
5576 static int decode_mb_cabac(H264Context *h) {
5577 MpegEncContext * const s = &h->s;
5578 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
5579 int mb_type, partition_count, cbp = 0;
5580 int dct8x8_allowed= h->pps.transform_8x8_mode;
5582 s->dsp.clear_blocks(h->mb); //FIXME avoid if already clear (move after skip handlong?)
5584 tprintf(s->avctx, "pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y);
5585 if( h->slice_type != I_TYPE && h->slice_type != SI_TYPE ) {
5587 /* a skipped mb needs the aff flag from the following mb */
5588 if( FRAME_MBAFF && s->mb_x==0 && (s->mb_y&1)==0 )
5589 predict_field_decoding_flag(h);
5590 if( FRAME_MBAFF && (s->mb_y&1)==1 && h->prev_mb_skipped )
5591 skip = h->next_mb_skipped;
5593 skip = decode_cabac_mb_skip( h, s->mb_x, s->mb_y );
5594 /* read skip flags */
5596 if( FRAME_MBAFF && (s->mb_y&1)==0 ){
5597 s->current_picture.mb_type[mb_xy] = MB_TYPE_SKIP;
5598 h->next_mb_skipped = decode_cabac_mb_skip( h, s->mb_x, s->mb_y+1 );
5599 if(h->next_mb_skipped)
5600 predict_field_decoding_flag(h);
5602 h->mb_mbaff = h->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h);
5607 h->cbp_table[mb_xy] = 0;
5608 h->chroma_pred_mode_table[mb_xy] = 0;
5609 h->last_qscale_diff = 0;
5616 if( (s->mb_y&1) == 0 )
5618 h->mb_field_decoding_flag = decode_cabac_field_decoding_flag(h);
5620 h->mb_field_decoding_flag= (s->picture_structure!=PICT_FRAME);
5622 h->prev_mb_skipped = 0;
5624 compute_mb_neighbors(h);
5625 if( ( mb_type = decode_cabac_mb_type( h ) ) < 0 ) {
5626 av_log( h->s.avctx, AV_LOG_ERROR, "decode_cabac_mb_type failed\n" );
5630 if( h->slice_type == B_TYPE ) {
5632 partition_count= b_mb_type_info[mb_type].partition_count;
5633 mb_type= b_mb_type_info[mb_type].type;
5636 goto decode_intra_mb;
5638 } else if( h->slice_type == P_TYPE ) {
5640 partition_count= p_mb_type_info[mb_type].partition_count;
5641 mb_type= p_mb_type_info[mb_type].type;
5644 goto decode_intra_mb;
5647 assert(h->slice_type == I_TYPE);
5649 partition_count = 0;
5650 cbp= i_mb_type_info[mb_type].cbp;
5651 h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode;
5652 mb_type= i_mb_type_info[mb_type].type;
5655 mb_type |= MB_TYPE_INTERLACED;
5657 h->slice_table[ mb_xy ]= h->slice_num;
5659 if(IS_INTRA_PCM(mb_type)) {
5663 // We assume these blocks are very rare so we do not optimize it.
5664 // FIXME The two following lines get the bitstream position in the cabac
5665 // decode, I think it should be done by a function in cabac.h (or cabac.c).
5666 ptr= h->cabac.bytestream;
5667 if(h->cabac.low&0x1) ptr--;
5669 if(h->cabac.low&0x1FF) ptr--;
5672 // The pixels are stored in the same order as levels in h->mb array.
5673 for(y=0; y<16; y++){
5674 const int index= 4*(y&3) + 32*((y>>2)&1) + 128*(y>>3);
5675 for(x=0; x<16; x++){
5676 tprintf(s->avctx, "LUMA ICPM LEVEL (%3d)\n", *ptr);
5677 h->mb[index + (x&3) + 16*((x>>2)&1) + 64*(x>>3)]= *ptr++;
5681 const int index= 256 + 4*(y&3) + 32*(y>>2);
5683 tprintf(s->avctx, "CHROMA U ICPM LEVEL (%3d)\n", *ptr);
5684 h->mb[index + (x&3) + 16*(x>>2)]= *ptr++;
5688 const int index= 256 + 64 + 4*(y&3) + 32*(y>>2);
5690 tprintf(s->avctx, "CHROMA V ICPM LEVEL (%3d)\n", *ptr);
5691 h->mb[index + (x&3) + 16*(x>>2)]= *ptr++;
5695 ff_init_cabac_decoder(&h->cabac, ptr, h->cabac.bytestream_end - ptr);
5697 // All blocks are present
5698 h->cbp_table[mb_xy] = 0x1ef;
5699 h->chroma_pred_mode_table[mb_xy] = 0;
5700 // In deblocking, the quantizer is 0
5701 s->current_picture.qscale_table[mb_xy]= 0;
5702 h->chroma_qp[0] = get_chroma_qp(h, 0, 0);
5703 h->chroma_qp[1] = get_chroma_qp(h, 1, 0);
5704 // All coeffs are present
5705 memset(h->non_zero_count[mb_xy], 16, 16);
5706 s->current_picture.mb_type[mb_xy]= mb_type;
5711 h->ref_count[0] <<= 1;
5712 h->ref_count[1] <<= 1;
5715 fill_caches(h, mb_type, 0);
5717 if( IS_INTRA( mb_type ) ) {
5719 if( IS_INTRA4x4( mb_type ) ) {
5720 if( dct8x8_allowed && decode_cabac_mb_transform_size( h ) ) {
5721 mb_type |= MB_TYPE_8x8DCT;
5722 for( i = 0; i < 16; i+=4 ) {
5723 int pred = pred_intra_mode( h, i );
5724 int mode = decode_cabac_mb_intra4x4_pred_mode( h, pred );
5725 fill_rectangle( &h->intra4x4_pred_mode_cache[ scan8[i] ], 2, 2, 8, mode, 1 );
5728 for( i = 0; i < 16; i++ ) {
5729 int pred = pred_intra_mode( h, i );
5730 h->intra4x4_pred_mode_cache[ scan8[i] ] = decode_cabac_mb_intra4x4_pred_mode( h, pred );
5732 //av_log( s->avctx, AV_LOG_ERROR, "i4x4 pred=%d mode=%d\n", pred, h->intra4x4_pred_mode_cache[ scan8[i] ] );
5735 write_back_intra_pred_mode(h);
5736 if( check_intra4x4_pred_mode(h) < 0 ) return -1;
5738 h->intra16x16_pred_mode= check_intra_pred_mode( h, h->intra16x16_pred_mode );
5739 if( h->intra16x16_pred_mode < 0 ) return -1;
5741 h->chroma_pred_mode_table[mb_xy] =
5742 pred_mode = decode_cabac_mb_chroma_pre_mode( h );
5744 pred_mode= check_intra_pred_mode( h, pred_mode );
5745 if( pred_mode < 0 ) return -1;
5746 h->chroma_pred_mode= pred_mode;
5747 } else if( partition_count == 4 ) {
5748 int i, j, sub_partition_count[4], list, ref[2][4];
5750 if( h->slice_type == B_TYPE ) {
5751 for( i = 0; i < 4; i++ ) {
5752 h->sub_mb_type[i] = decode_cabac_b_mb_sub_type( h );
5753 sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
5754 h->sub_mb_type[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].type;
5756 if( IS_DIRECT(h->sub_mb_type[0] | h->sub_mb_type[1] |
5757 h->sub_mb_type[2] | h->sub_mb_type[3]) ) {
5758 pred_direct_motion(h, &mb_type);
5759 h->ref_cache[0][scan8[4]] =
5760 h->ref_cache[1][scan8[4]] =
5761 h->ref_cache[0][scan8[12]] =
5762 h->ref_cache[1][scan8[12]] = PART_NOT_AVAILABLE;
5763 if( h->ref_count[0] > 1 || h->ref_count[1] > 1 ) {
5764 for( i = 0; i < 4; i++ )
5765 if( IS_DIRECT(h->sub_mb_type[i]) )
5766 fill_rectangle( &h->direct_cache[scan8[4*i]], 2, 2, 8, 1, 1 );
5770 for( i = 0; i < 4; i++ ) {
5771 h->sub_mb_type[i] = decode_cabac_p_mb_sub_type( h );
5772 sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count;
5773 h->sub_mb_type[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].type;
5777 for( list = 0; list < h->list_count; list++ ) {
5778 for( i = 0; i < 4; i++ ) {
5779 if(IS_DIRECT(h->sub_mb_type[i])) continue;
5780 if(IS_DIR(h->sub_mb_type[i], 0, list)){
5781 if( h->ref_count[list] > 1 )
5782 ref[list][i] = decode_cabac_mb_ref( h, list, 4*i );
5788 h->ref_cache[list][ scan8[4*i]+1 ]=
5789 h->ref_cache[list][ scan8[4*i]+8 ]=h->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i];
5794 dct8x8_allowed = get_dct8x8_allowed(h);
5796 for(list=0; list<h->list_count; list++){
5798 h->ref_cache[list][ scan8[4*i] ]=h->ref_cache[list][ scan8[4*i]+1 ];
5799 if(IS_DIRECT(h->sub_mb_type[i])){
5800 fill_rectangle(h->mvd_cache[list][scan8[4*i]], 2, 2, 8, 0, 4);
5804 if(IS_DIR(h->sub_mb_type[i], 0, list) && !IS_DIRECT(h->sub_mb_type[i])){
5805 const int sub_mb_type= h->sub_mb_type[i];
5806 const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1;
5807 for(j=0; j<sub_partition_count[i]; j++){
5810 const int index= 4*i + block_width*j;
5811 int16_t (* mv_cache)[2]= &h->mv_cache[list][ scan8[index] ];
5812 int16_t (* mvd_cache)[2]= &h->mvd_cache[list][ scan8[index] ];
5813 pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mpx, &mpy);
5815 mx = mpx + decode_cabac_mb_mvd( h, list, index, 0 );
5816 my = mpy + decode_cabac_mb_mvd( h, list, index, 1 );
5817 tprintf(s->avctx, "final mv:%d %d\n", mx, my);
5819 if(IS_SUB_8X8(sub_mb_type)){
5821 mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx;
5823 mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my;
5826 mvd_cache[ 8 ][0]= mvd_cache[ 9 ][0]= mx - mpx;
5828 mvd_cache[ 8 ][1]= mvd_cache[ 9 ][1]= my - mpy;
5829 }else if(IS_SUB_8X4(sub_mb_type)){
5830 mv_cache[ 1 ][0]= mx;
5831 mv_cache[ 1 ][1]= my;
5833 mvd_cache[ 1 ][0]= mx - mpx;
5834 mvd_cache[ 1 ][1]= my - mpy;
5835 }else if(IS_SUB_4X8(sub_mb_type)){
5836 mv_cache[ 8 ][0]= mx;
5837 mv_cache[ 8 ][1]= my;
5839 mvd_cache[ 8 ][0]= mx - mpx;
5840 mvd_cache[ 8 ][1]= my - mpy;
5842 mv_cache[ 0 ][0]= mx;
5843 mv_cache[ 0 ][1]= my;
5845 mvd_cache[ 0 ][0]= mx - mpx;
5846 mvd_cache[ 0 ][1]= my - mpy;
5849 uint32_t *p= (uint32_t *)&h->mv_cache[list][ scan8[4*i] ][0];
5850 uint32_t *pd= (uint32_t *)&h->mvd_cache[list][ scan8[4*i] ][0];
5851 p[0] = p[1] = p[8] = p[9] = 0;
5852 pd[0]= pd[1]= pd[8]= pd[9]= 0;
5856 } else if( IS_DIRECT(mb_type) ) {
5857 pred_direct_motion(h, &mb_type);
5858 fill_rectangle(h->mvd_cache[0][scan8[0]], 4, 4, 8, 0, 4);
5859 fill_rectangle(h->mvd_cache[1][scan8[0]], 4, 4, 8, 0, 4);
5860 dct8x8_allowed &= h->sps.direct_8x8_inference_flag;
5862 int list, mx, my, i, mpx, mpy;
5863 if(IS_16X16(mb_type)){
5864 for(list=0; list<h->list_count; list++){
5865 if(IS_DIR(mb_type, 0, list)){
5866 const int ref = h->ref_count[list] > 1 ? decode_cabac_mb_ref( h, list, 0 ) : 0;
5867 fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, ref, 1);
5869 fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, (uint8_t)LIST_NOT_USED, 1); //FIXME factorize and the other fill_rect below too
5871 for(list=0; list<h->list_count; list++){
5872 if(IS_DIR(mb_type, 0, list)){
5873 pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mpx, &mpy);
5875 mx = mpx + decode_cabac_mb_mvd( h, list, 0, 0 );
5876 my = mpy + decode_cabac_mb_mvd( h, list, 0, 1 );
5877 tprintf(s->avctx, "final mv:%d %d\n", mx, my);
5879 fill_rectangle(h->mvd_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx-mpx,my-mpy), 4);
5880 fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4);
5882 fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, 0, 4);
5885 else if(IS_16X8(mb_type)){
5886 for(list=0; list<h->list_count; list++){
5888 if(IS_DIR(mb_type, i, list)){
5889 const int ref= h->ref_count[list] > 1 ? decode_cabac_mb_ref( h, list, 8*i ) : 0;
5890 fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, ref, 1);
5892 fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, (LIST_NOT_USED&0xFF), 1);
5895 for(list=0; list<h->list_count; list++){
5897 if(IS_DIR(mb_type, i, list)){
5898 pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mpx, &mpy);
5899 mx = mpx + decode_cabac_mb_mvd( h, list, 8*i, 0 );
5900 my = mpy + decode_cabac_mb_mvd( h, list, 8*i, 1 );
5901 tprintf(s->avctx, "final mv:%d %d\n", mx, my);
5903 fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx-mpx,my-mpy), 4);
5904 fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx,my), 4);
5906 fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 4);
5907 fill_rectangle(h-> mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 4);
5912 assert(IS_8X16(mb_type));
5913 for(list=0; list<h->list_count; list++){
5915 if(IS_DIR(mb_type, i, list)){ //FIXME optimize
5916 const int ref= h->ref_count[list] > 1 ? decode_cabac_mb_ref( h, list, 4*i ) : 0;
5917 fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, ref, 1);
5919 fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, (LIST_NOT_USED&0xFF), 1);
5922 for(list=0; list<h->list_count; list++){
5924 if(IS_DIR(mb_type, i, list)){
5925 pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mpx, &mpy);
5926 mx = mpx + decode_cabac_mb_mvd( h, list, 4*i, 0 );
5927 my = mpy + decode_cabac_mb_mvd( h, list, 4*i, 1 );
5929 tprintf(s->avctx, "final mv:%d %d\n", mx, my);
5930 fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx-mpx,my-mpy), 4);
5931 fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx,my), 4);
5933 fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 4);
5934 fill_rectangle(h-> mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 4);
5941 if( IS_INTER( mb_type ) ) {
5942 h->chroma_pred_mode_table[mb_xy] = 0;
5943 write_back_motion( h, mb_type );
5946 if( !IS_INTRA16x16( mb_type ) ) {
5947 cbp = decode_cabac_mb_cbp_luma( h );
5948 cbp |= decode_cabac_mb_cbp_chroma( h ) << 4;
5951 h->cbp_table[mb_xy] = h->cbp = cbp;
5953 if( dct8x8_allowed && (cbp&15) && !IS_INTRA( mb_type ) ) {
5954 if( decode_cabac_mb_transform_size( h ) )
5955 mb_type |= MB_TYPE_8x8DCT;
5957 s->current_picture.mb_type[mb_xy]= mb_type;
5959 if( cbp || IS_INTRA16x16( mb_type ) ) {
5960 const uint8_t *scan, *scan8x8, *dc_scan;
5961 const uint32_t *qmul;
5964 if(IS_INTERLACED(mb_type)){
5965 scan8x8= s->qscale ? h->field_scan8x8 : h->field_scan8x8_q0;
5966 scan= s->qscale ? h->field_scan : h->field_scan_q0;
5967 dc_scan= luma_dc_field_scan;
5969 scan8x8= s->qscale ? h->zigzag_scan8x8 : h->zigzag_scan8x8_q0;
5970 scan= s->qscale ? h->zigzag_scan : h->zigzag_scan_q0;
5971 dc_scan= luma_dc_zigzag_scan;
5974 h->last_qscale_diff = dqp = decode_cabac_mb_dqp( h );
5975 if( dqp == INT_MIN ){
5976 av_log(h->s.avctx, AV_LOG_ERROR, "cabac decode of qscale diff failed at %d %d\n", s->mb_x, s->mb_y);
5980 if(((unsigned)s->qscale) > 51){
5981 if(s->qscale<0) s->qscale+= 52;
5982 else s->qscale-= 52;
5984 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
5985 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
5987 if( IS_INTRA16x16( mb_type ) ) {
5989 //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 DC\n" );
5990 decode_cabac_residual( h, h->mb, 0, 0, dc_scan, NULL, 16);
5993 qmul = h->dequant4_coeff[0][s->qscale];
5994 for( i = 0; i < 16; i++ ) {
5995 //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 AC:%d\n", i );
5996 decode_cabac_residual(h, h->mb + 16*i, 1, i, scan + 1, qmul, 15);
5999 fill_rectangle(&h->non_zero_count_cache[scan8[0]], 4, 4, 8, 0, 1);
6003 for( i8x8 = 0; i8x8 < 4; i8x8++ ) {
6004 if( cbp & (1<<i8x8) ) {
6005 if( IS_8x8DCT(mb_type) ) {
6006 decode_cabac_residual(h, h->mb + 64*i8x8, 5, 4*i8x8,
6007 scan8x8, h->dequant8_coeff[IS_INTRA( mb_type ) ? 0:1][s->qscale], 64);
6009 qmul = h->dequant4_coeff[IS_INTRA( mb_type ) ? 0:3][s->qscale];
6010 for( i4x4 = 0; i4x4 < 4; i4x4++ ) {
6011 const int index = 4*i8x8 + i4x4;
6012 //av_log( s->avctx, AV_LOG_ERROR, "Luma4x4: %d\n", index );
6014 decode_cabac_residual(h, h->mb + 16*index, 2, index, scan, qmul, 16);
6015 //STOP_TIMER("decode_residual")
6019 uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ];
6020 nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0;
6027 for( c = 0; c < 2; c++ ) {
6028 //av_log( s->avctx, AV_LOG_ERROR, "INTRA C%d-DC\n",c );
6029 decode_cabac_residual(h, h->mb + 256 + 16*4*c, 3, c, chroma_dc_scan, NULL, 4);
6035 for( c = 0; c < 2; c++ ) {
6036 qmul = h->dequant4_coeff[c+1+(IS_INTRA( mb_type ) ? 0:3)][h->chroma_qp[c]];
6037 for( i = 0; i < 4; i++ ) {
6038 const int index = 16 + 4 * c + i;
6039 //av_log( s->avctx, AV_LOG_ERROR, "INTRA C%d-AC %d\n",c, index - 16 );
6040 decode_cabac_residual(h, h->mb + 16*index, 4, index - 16, scan + 1, qmul, 15);
6044 uint8_t * const nnz= &h->non_zero_count_cache[0];
6045 nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
6046 nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
6049 uint8_t * const nnz= &h->non_zero_count_cache[0];
6050 fill_rectangle(&nnz[scan8[0]], 4, 4, 8, 0, 1);
6051 nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] =
6052 nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0;
6053 h->last_qscale_diff = 0;
6056 s->current_picture.qscale_table[mb_xy]= s->qscale;
6057 write_back_non_zero_count(h);
6060 h->ref_count[0] >>= 1;
6061 h->ref_count[1] >>= 1;
6068 static void filter_mb_edgev( H264Context *h, uint8_t *pix, int stride, int16_t bS[4], int qp ) {
6070 const int index_a = qp + h->slice_alpha_c0_offset;
6071 const int alpha = (alpha_table+52)[index_a];
6072 const int beta = (beta_table+52)[qp + h->slice_beta_offset];
6077 tc[i] = bS[i] ? (tc0_table+52)[index_a][bS[i] - 1] : -1;
6078 h->s.dsp.h264_h_loop_filter_luma(pix, stride, alpha, beta, tc);
6080 /* 16px edge length, because bS=4 is triggered by being at
6081 * the edge of an intra MB, so all 4 bS are the same */
6082 for( d = 0; d < 16; d++ ) {
6083 const int p0 = pix[-1];
6084 const int p1 = pix[-2];
6085 const int p2 = pix[-3];
6087 const int q0 = pix[0];
6088 const int q1 = pix[1];
6089 const int q2 = pix[2];
6091 if( FFABS( p0 - q0 ) < alpha &&
6092 FFABS( p1 - p0 ) < beta &&
6093 FFABS( q1 - q0 ) < beta ) {
6095 if(FFABS( p0 - q0 ) < (( alpha >> 2 ) + 2 )){
6096 if( FFABS( p2 - p0 ) < beta)
6098 const int p3 = pix[-4];
6100 pix[-1] = ( p2 + 2*p1 + 2*p0 + 2*q0 + q1 + 4 ) >> 3;
6101 pix[-2] = ( p2 + p1 + p0 + q0 + 2 ) >> 2;
6102 pix[-3] = ( 2*p3 + 3*p2 + p1 + p0 + q0 + 4 ) >> 3;
6105 pix[-1] = ( 2*p1 + p0 + q1 + 2 ) >> 2;
6107 if( FFABS( q2 - q0 ) < beta)
6109 const int q3 = pix[3];
6111 pix[0] = ( p1 + 2*p0 + 2*q0 + 2*q1 + q2 + 4 ) >> 3;
6112 pix[1] = ( p0 + q0 + q1 + q2 + 2 ) >> 2;
6113 pix[2] = ( 2*q3 + 3*q2 + q1 + q0 + p0 + 4 ) >> 3;
6116 pix[0] = ( 2*q1 + q0 + p1 + 2 ) >> 2;
6120 pix[-1] = ( 2*p1 + p0 + q1 + 2 ) >> 2;
6121 pix[ 0] = ( 2*q1 + q0 + p1 + 2 ) >> 2;
6123 tprintf(h->s.avctx, "filter_mb_edgev i:%d d:%d\n# bS:4 -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x]\n", i, d, p2, p1, p0, q0, q1, q2, pix[-2], pix[-1], pix[0], pix[1]);
6129 static void filter_mb_edgecv( H264Context *h, uint8_t *pix, int stride, int16_t bS[4], int qp ) {
6131 const int index_a = qp + h->slice_alpha_c0_offset;
6132 const int alpha = (alpha_table+52)[index_a];
6133 const int beta = (beta_table+52)[qp + h->slice_beta_offset];
6138 tc[i] = bS[i] ? (tc0_table+52)[index_a][bS[i] - 1] + 1 : 0;
6139 h->s.dsp.h264_h_loop_filter_chroma(pix, stride, alpha, beta, tc);
6141 h->s.dsp.h264_h_loop_filter_chroma_intra(pix, stride, alpha, beta);
6145 static void filter_mb_mbaff_edgev( H264Context *h, uint8_t *pix, int stride, int16_t bS[8], int qp[2] ) {
6147 for( i = 0; i < 16; i++, pix += stride) {
6153 int bS_index = (i >> 1);
6156 bS_index |= (i & 1);
6159 if( bS[bS_index] == 0 ) {
6163 qp_index = MB_FIELD ? (i >> 3) : (i & 1);
6164 index_a = qp[qp_index] + h->slice_alpha_c0_offset;
6165 alpha = (alpha_table+52)[index_a];
6166 beta = (beta_table+52)[qp[qp_index] + h->slice_beta_offset];
6168 if( bS[bS_index] < 4 ) {
6169 const int tc0 = (tc0_table+52)[index_a][bS[bS_index] - 1];
6170 const int p0 = pix[-1];
6171 const int p1 = pix[-2];
6172 const int p2 = pix[-3];
6173 const int q0 = pix[0];
6174 const int q1 = pix[1];
6175 const int q2 = pix[2];
6177 if( FFABS( p0 - q0 ) < alpha &&
6178 FFABS( p1 - p0 ) < beta &&
6179 FFABS( q1 - q0 ) < beta ) {
6183 if( FFABS( p2 - p0 ) < beta ) {
6184 pix[-2] = p1 + av_clip( ( p2 + ( ( p0 + q0 + 1 ) >> 1 ) - ( p1 << 1 ) ) >> 1, -tc0, tc0 );
6187 if( FFABS( q2 - q0 ) < beta ) {
6188 pix[1] = q1 + av_clip( ( q2 + ( ( p0 + q0 + 1 ) >> 1 ) - ( q1 << 1 ) ) >> 1, -tc0, tc0 );
6192 i_delta = av_clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc );
6193 pix[-1] = av_clip_uint8( p0 + i_delta ); /* p0' */
6194 pix[0] = av_clip_uint8( q0 - i_delta ); /* q0' */
6195 tprintf(h->s.avctx, "filter_mb_mbaff_edgev i:%d, qp:%d, indexA:%d, alpha:%d, beta:%d, tc:%d\n# bS:%d -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x]\n", i, qp[qp_index], index_a, alpha, beta, tc, bS[bS_index], pix[-3], p1, p0, q0, q1, pix[2], p1, pix[-1], pix[0], q1);
6198 const int p0 = pix[-1];
6199 const int p1 = pix[-2];
6200 const int p2 = pix[-3];
6202 const int q0 = pix[0];
6203 const int q1 = pix[1];
6204 const int q2 = pix[2];
6206 if( FFABS( p0 - q0 ) < alpha &&
6207 FFABS( p1 - p0 ) < beta &&
6208 FFABS( q1 - q0 ) < beta ) {
6210 if(FFABS( p0 - q0 ) < (( alpha >> 2 ) + 2 )){
6211 if( FFABS( p2 - p0 ) < beta)
6213 const int p3 = pix[-4];
6215 pix[-1] = ( p2 + 2*p1 + 2*p0 + 2*q0 + q1 + 4 ) >> 3;
6216 pix[-2] = ( p2 + p1 + p0 + q0 + 2 ) >> 2;
6217 pix[-3] = ( 2*p3 + 3*p2 + p1 + p0 + q0 + 4 ) >> 3;
6220 pix[-1] = ( 2*p1 + p0 + q1 + 2 ) >> 2;
6222 if( FFABS( q2 - q0 ) < beta)
6224 const int q3 = pix[3];
6226 pix[0] = ( p1 + 2*p0 + 2*q0 + 2*q1 + q2 + 4 ) >> 3;
6227 pix[1] = ( p0 + q0 + q1 + q2 + 2 ) >> 2;
6228 pix[2] = ( 2*q3 + 3*q2 + q1 + q0 + p0 + 4 ) >> 3;
6231 pix[0] = ( 2*q1 + q0 + p1 + 2 ) >> 2;
6235 pix[-1] = ( 2*p1 + p0 + q1 + 2 ) >> 2;
6236 pix[ 0] = ( 2*q1 + q0 + p1 + 2 ) >> 2;
6238 tprintf(h->s.avctx, "filter_mb_mbaff_edgev i:%d, qp:%d, indexA:%d, alpha:%d, beta:%d\n# bS:4 -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x, %02x, %02x]\n", i, qp[qp_index], index_a, alpha, beta, p2, p1, p0, q0, q1, q2, pix[-3], pix[-2], pix[-1], pix[0], pix[1], pix[2]);
6243 static void filter_mb_mbaff_edgecv( H264Context *h, uint8_t *pix, int stride, int16_t bS[8], int qp[2] ) {
6245 for( i = 0; i < 8; i++, pix += stride) {
6253 if( bS[bS_index] == 0 ) {
6257 qp_index = MB_FIELD ? (i >> 2) : (i & 1);
6258 index_a = qp[qp_index] + h->slice_alpha_c0_offset;
6259 alpha = (alpha_table+52)[index_a];
6260 beta = (beta_table+52)[qp[qp_index] + h->slice_beta_offset];
6262 if( bS[bS_index] < 4 ) {
6263 const int tc = (tc0_table+52)[index_a][bS[bS_index] - 1] + 1;
6264 const int p0 = pix[-1];
6265 const int p1 = pix[-2];
6266 const int q0 = pix[0];
6267 const int q1 = pix[1];
6269 if( FFABS( p0 - q0 ) < alpha &&
6270 FFABS( p1 - p0 ) < beta &&
6271 FFABS( q1 - q0 ) < beta ) {
6272 const int i_delta = av_clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc );
6274 pix[-1] = av_clip_uint8( p0 + i_delta ); /* p0' */
6275 pix[0] = av_clip_uint8( q0 - i_delta ); /* q0' */
6276 tprintf(h->s.avctx, "filter_mb_mbaff_edgecv i:%d, qp:%d, indexA:%d, alpha:%d, beta:%d, tc:%d\n# bS:%d -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x]\n", i, qp[qp_index], index_a, alpha, beta, tc, bS[bS_index], pix[-3], p1, p0, q0, q1, pix[2], p1, pix[-1], pix[0], q1);
6279 const int p0 = pix[-1];
6280 const int p1 = pix[-2];
6281 const int q0 = pix[0];
6282 const int q1 = pix[1];
6284 if( FFABS( p0 - q0 ) < alpha &&
6285 FFABS( p1 - p0 ) < beta &&
6286 FFABS( q1 - q0 ) < beta ) {
6288 pix[-1] = ( 2*p1 + p0 + q1 + 2 ) >> 2; /* p0' */
6289 pix[0] = ( 2*q1 + q0 + p1 + 2 ) >> 2; /* q0' */
6290 tprintf(h->s.avctx, "filter_mb_mbaff_edgecv i:%d\n# bS:4 -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x, %02x, %02x]\n", i, pix[-3], p1, p0, q0, q1, pix[2], pix[-3], pix[-2], pix[-1], pix[0], pix[1], pix[2]);
6296 static void filter_mb_edgeh( H264Context *h, uint8_t *pix, int stride, int16_t bS[4], int qp ) {
6298 const int index_a = qp + h->slice_alpha_c0_offset;
6299 const int alpha = (alpha_table+52)[index_a];
6300 const int beta = (beta_table+52)[qp + h->slice_beta_offset];
6301 const int pix_next = stride;
6306 tc[i] = bS[i] ? (tc0_table+52)[index_a][bS[i] - 1] : -1;
6307 h->s.dsp.h264_v_loop_filter_luma(pix, stride, alpha, beta, tc);
6309 /* 16px edge length, see filter_mb_edgev */
6310 for( d = 0; d < 16; d++ ) {
6311 const int p0 = pix[-1*pix_next];
6312 const int p1 = pix[-2*pix_next];
6313 const int p2 = pix[-3*pix_next];
6314 const int q0 = pix[0];
6315 const int q1 = pix[1*pix_next];
6316 const int q2 = pix[2*pix_next];
6318 if( FFABS( p0 - q0 ) < alpha &&
6319 FFABS( p1 - p0 ) < beta &&
6320 FFABS( q1 - q0 ) < beta ) {
6322 const int p3 = pix[-4*pix_next];
6323 const int q3 = pix[ 3*pix_next];
6325 if(FFABS( p0 - q0 ) < (( alpha >> 2 ) + 2 )){
6326 if( FFABS( p2 - p0 ) < beta) {
6328 pix[-1*pix_next] = ( p2 + 2*p1 + 2*p0 + 2*q0 + q1 + 4 ) >> 3;
6329 pix[-2*pix_next] = ( p2 + p1 + p0 + q0 + 2 ) >> 2;
6330 pix[-3*pix_next] = ( 2*p3 + 3*p2 + p1 + p0 + q0 + 4 ) >> 3;
6333 pix[-1*pix_next] = ( 2*p1 + p0 + q1 + 2 ) >> 2;
6335 if( FFABS( q2 - q0 ) < beta) {
6337 pix[0*pix_next] = ( p1 + 2*p0 + 2*q0 + 2*q1 + q2 + 4 ) >> 3;
6338 pix[1*pix_next] = ( p0 + q0 + q1 + q2 + 2 ) >> 2;
6339 pix[2*pix_next] = ( 2*q3 + 3*q2 + q1 + q0 + p0 + 4 ) >> 3;
6342 pix[0*pix_next] = ( 2*q1 + q0 + p1 + 2 ) >> 2;
6346 pix[-1*pix_next] = ( 2*p1 + p0 + q1 + 2 ) >> 2;
6347 pix[ 0*pix_next] = ( 2*q1 + q0 + p1 + 2 ) >> 2;
6349 tprintf(h->s.avctx, "filter_mb_edgeh i:%d d:%d, qp:%d, indexA:%d, alpha:%d, beta:%d\n# bS:%d -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x]\n", i, d, qp, index_a, alpha, beta, bS[i], p2, p1, p0, q0, q1, q2, pix[-2*pix_next], pix[-pix_next], pix[0], pix[pix_next]);
6356 static void filter_mb_edgech( H264Context *h, uint8_t *pix, int stride, int16_t bS[4], int qp ) {
6358 const int index_a = qp + h->slice_alpha_c0_offset;
6359 const int alpha = (alpha_table+52)[index_a];
6360 const int beta = (beta_table+52)[qp + h->slice_beta_offset];
6365 tc[i] = bS[i] ? (tc0_table+52)[index_a][bS[i] - 1] + 1 : 0;
6366 h->s.dsp.h264_v_loop_filter_chroma(pix, stride, alpha, beta, tc);
6368 h->s.dsp.h264_v_loop_filter_chroma_intra(pix, stride, alpha, beta);
6372 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) {
6373 MpegEncContext * const s = &h->s;
6374 int mb_y_firstrow = s->picture_structure == PICT_BOTTOM_FIELD;
6376 int qp, qp0, qp1, qpc, qpc0, qpc1, qp_thresh;
6378 mb_xy = mb_x + mb_y*s->mb_stride;
6380 if(mb_x==0 || mb_y==mb_y_firstrow || !s->dsp.h264_loop_filter_strength || h->pps.chroma_qp_diff ||
6381 (h->deblocking_filter == 2 && (h->slice_table[mb_xy] != h->slice_table[h->top_mb_xy] ||
6382 h->slice_table[mb_xy] != h->slice_table[mb_xy - 1]))) {
6383 filter_mb(h, mb_x, mb_y, img_y, img_cb, img_cr, linesize, uvlinesize);
6386 assert(!FRAME_MBAFF);
6388 mb_type = s->current_picture.mb_type[mb_xy];
6389 qp = s->current_picture.qscale_table[mb_xy];
6390 qp0 = s->current_picture.qscale_table[mb_xy-1];
6391 qp1 = s->current_picture.qscale_table[h->top_mb_xy];
6392 qpc = get_chroma_qp( h, 0, qp );
6393 qpc0 = get_chroma_qp( h, 0, qp0 );
6394 qpc1 = get_chroma_qp( h, 0, qp1 );
6395 qp0 = (qp + qp0 + 1) >> 1;
6396 qp1 = (qp + qp1 + 1) >> 1;
6397 qpc0 = (qpc + qpc0 + 1) >> 1;
6398 qpc1 = (qpc + qpc1 + 1) >> 1;
6399 qp_thresh = 15 - h->slice_alpha_c0_offset;
6400 if(qp <= qp_thresh && qp0 <= qp_thresh && qp1 <= qp_thresh &&
6401 qpc <= qp_thresh && qpc0 <= qp_thresh && qpc1 <= qp_thresh)
6404 if( IS_INTRA(mb_type) ) {
6405 int16_t bS4[4] = {4,4,4,4};
6406 int16_t bS3[4] = {3,3,3,3};
6407 int16_t *bSH = FIELD_PICTURE ? bS3 : bS4;
6408 if( IS_8x8DCT(mb_type) ) {
6409 filter_mb_edgev( h, &img_y[4*0], linesize, bS4, qp0 );
6410 filter_mb_edgev( h, &img_y[4*2], linesize, bS3, qp );
6411 filter_mb_edgeh( h, &img_y[4*0*linesize], linesize, bSH, qp1 );
6412 filter_mb_edgeh( h, &img_y[4*2*linesize], linesize, bS3, qp );
6414 filter_mb_edgev( h, &img_y[4*0], linesize, bS4, qp0 );
6415 filter_mb_edgev( h, &img_y[4*1], linesize, bS3, qp );
6416 filter_mb_edgev( h, &img_y[4*2], linesize, bS3, qp );
6417 filter_mb_edgev( h, &img_y[4*3], linesize, bS3, qp );
6418 filter_mb_edgeh( h, &img_y[4*0*linesize], linesize, bSH, qp1 );
6419 filter_mb_edgeh( h, &img_y[4*1*linesize], linesize, bS3, qp );
6420 filter_mb_edgeh( h, &img_y[4*2*linesize], linesize, bS3, qp );
6421 filter_mb_edgeh( h, &img_y[4*3*linesize], linesize, bS3, qp );
6423 filter_mb_edgecv( h, &img_cb[2*0], uvlinesize, bS4, qpc0 );
6424 filter_mb_edgecv( h, &img_cb[2*2], uvlinesize, bS3, qpc );
6425 filter_mb_edgecv( h, &img_cr[2*0], uvlinesize, bS4, qpc0 );
6426 filter_mb_edgecv( h, &img_cr[2*2], uvlinesize, bS3, qpc );
6427 filter_mb_edgech( h, &img_cb[2*0*uvlinesize], uvlinesize, bSH, qpc1 );
6428 filter_mb_edgech( h, &img_cb[2*2*uvlinesize], uvlinesize, bS3, qpc );
6429 filter_mb_edgech( h, &img_cr[2*0*uvlinesize], uvlinesize, bSH, qpc1 );
6430 filter_mb_edgech( h, &img_cr[2*2*uvlinesize], uvlinesize, bS3, qpc );
6433 DECLARE_ALIGNED_8(int16_t, bS[2][4][4]);
6434 uint64_t (*bSv)[4] = (uint64_t(*)[4])bS;
6436 if( IS_8x8DCT(mb_type) && (h->cbp&7) == 7 ) {
6438 bSv[0][0] = bSv[0][2] = bSv[1][0] = bSv[1][2] = 0x0002000200020002ULL;
6440 int mask_edge1 = (mb_type & (MB_TYPE_16x16 | MB_TYPE_8x16)) ? 3 :
6441 (mb_type & MB_TYPE_16x8) ? 1 : 0;
6442 int mask_edge0 = (mb_type & (MB_TYPE_16x16 | MB_TYPE_8x16))
6443 && (s->current_picture.mb_type[mb_xy-1] & (MB_TYPE_16x16 | MB_TYPE_8x16))
6445 int step = IS_8x8DCT(mb_type) ? 2 : 1;
6446 edges = (mb_type & MB_TYPE_16x16) && !(h->cbp & 15) ? 1 : 4;
6447 s->dsp.h264_loop_filter_strength( bS, h->non_zero_count_cache, h->ref_cache, h->mv_cache,
6448 (h->slice_type == B_TYPE), edges, step, mask_edge0, mask_edge1 );
6450 if( IS_INTRA(s->current_picture.mb_type[mb_xy-1]) )
6451 bSv[0][0] = 0x0004000400040004ULL;
6452 if( IS_INTRA(s->current_picture.mb_type[h->top_mb_xy]) )
6453 bSv[1][0] = FIELD_PICTURE ? 0x0003000300030003ULL : 0x0004000400040004ULL;
6455 #define FILTER(hv,dir,edge)\
6456 if(bSv[dir][edge]) {\
6457 filter_mb_edge##hv( h, &img_y[4*edge*(dir?linesize:1)], linesize, bS[dir][edge], edge ? qp : qp##dir );\
6459 filter_mb_edgec##hv( h, &img_cb[2*edge*(dir?uvlinesize:1)], uvlinesize, bS[dir][edge], edge ? qpc : qpc##dir );\
6460 filter_mb_edgec##hv( h, &img_cr[2*edge*(dir?uvlinesize:1)], uvlinesize, bS[dir][edge], edge ? qpc : qpc##dir );\
6466 } else if( IS_8x8DCT(mb_type) ) {
6485 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) {
6486 MpegEncContext * const s = &h->s;
6487 const int mb_xy= mb_x + mb_y*s->mb_stride;
6488 const int mb_type = s->current_picture.mb_type[mb_xy];
6489 const int mvy_limit = IS_INTERLACED(mb_type) ? 2 : 4;
6490 int first_vertical_edge_done = 0;
6492 /* FIXME: A given frame may occupy more than one position in
6493 * the reference list. So ref2frm should be populated with
6494 * frame numbers, not indices. */
6495 static const int ref2frm[34] = {-1,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
6496 16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31};
6498 //for sufficiently low qp, filtering wouldn't do anything
6499 //this is a conservative estimate: could also check beta_offset and more accurate chroma_qp
6501 int qp_thresh = 15 - h->slice_alpha_c0_offset - FFMAX(0, FFMAX(h->pps.chroma_qp_index_offset[0], h->pps.chroma_qp_index_offset[1]));
6502 int qp = s->current_picture.qscale_table[mb_xy];
6504 && (mb_x == 0 || ((qp + s->current_picture.qscale_table[mb_xy-1] + 1)>>1) <= qp_thresh)
6505 && (mb_y == 0 || ((qp + s->current_picture.qscale_table[h->top_mb_xy] + 1)>>1) <= qp_thresh)){
6511 // left mb is in picture
6512 && h->slice_table[mb_xy-1] != 255
6513 // and current and left pair do not have the same interlaced type
6514 && (IS_INTERLACED(mb_type) != IS_INTERLACED(s->current_picture.mb_type[mb_xy-1]))
6515 // and left mb is in the same slice if deblocking_filter == 2
6516 && (h->deblocking_filter!=2 || h->slice_table[mb_xy-1] == h->slice_table[mb_xy])) {
6517 /* First vertical edge is different in MBAFF frames
6518 * There are 8 different bS to compute and 2 different Qp
6520 const int pair_xy = mb_x + (mb_y&~1)*s->mb_stride;
6521 const int left_mb_xy[2] = { pair_xy-1, pair_xy-1+s->mb_stride };
6526 int mb_qp, mbn0_qp, mbn1_qp;
6528 first_vertical_edge_done = 1;
6530 if( IS_INTRA(mb_type) )
6531 bS[0] = bS[1] = bS[2] = bS[3] = bS[4] = bS[5] = bS[6] = bS[7] = 4;
6533 for( i = 0; i < 8; i++ ) {
6534 int mbn_xy = MB_FIELD ? left_mb_xy[i>>2] : left_mb_xy[i&1];
6536 if( IS_INTRA( s->current_picture.mb_type[mbn_xy] ) )
6538 else if( h->non_zero_count_cache[12+8*(i>>1)] != 0 ||
6539 /* FIXME: with 8x8dct + cavlc, should check cbp instead of nnz */
6540 h->non_zero_count[mbn_xy][MB_FIELD ? i&3 : (i>>2)+(mb_y&1)*2] )
6547 mb_qp = s->current_picture.qscale_table[mb_xy];
6548 mbn0_qp = s->current_picture.qscale_table[left_mb_xy[0]];
6549 mbn1_qp = s->current_picture.qscale_table[left_mb_xy[1]];
6550 qp[0] = ( mb_qp + mbn0_qp + 1 ) >> 1;
6551 bqp[0] = ( get_chroma_qp( h, 0, mb_qp ) +
6552 get_chroma_qp( h, 0, mbn0_qp ) + 1 ) >> 1;
6553 rqp[0] = ( get_chroma_qp( h, 1, mb_qp ) +
6554 get_chroma_qp( h, 1, mbn0_qp ) + 1 ) >> 1;
6555 qp[1] = ( mb_qp + mbn1_qp + 1 ) >> 1;
6556 bqp[1] = ( get_chroma_qp( h, 0, mb_qp ) +
6557 get_chroma_qp( h, 0, mbn1_qp ) + 1 ) >> 1;
6558 rqp[1] = ( get_chroma_qp( h, 1, mb_qp ) +
6559 get_chroma_qp( h, 1, mbn1_qp ) + 1 ) >> 1;
6562 tprintf(s->avctx, "filter mb:%d/%d MBAFF, QPy:%d/%d, QPb:%d/%d QPr:%d/%d ls:%d uvls:%d", mb_x, mb_y, qp[0], qp[1], bqp[0], bqp[1], rqp[0], rqp[1], linesize, uvlinesize);
6563 { int i; for (i = 0; i < 8; i++) tprintf(s->avctx, " bS[%d]:%d", i, bS[i]); tprintf(s->avctx, "\n"); }
6564 filter_mb_mbaff_edgev ( h, &img_y [0], linesize, bS, qp );
6565 filter_mb_mbaff_edgecv( h, &img_cb[0], uvlinesize, bS, bqp );
6566 filter_mb_mbaff_edgecv( h, &img_cr[0], uvlinesize, bS, rqp );
6568 /* dir : 0 -> vertical edge, 1 -> horizontal edge */
6569 for( dir = 0; dir < 2; dir++ )
6572 const int mbm_xy = dir == 0 ? mb_xy -1 : h->top_mb_xy;
6573 const int mbm_type = s->current_picture.mb_type[mbm_xy];
6574 int start = h->slice_table[mbm_xy] == 255 ? 1 : 0;
6576 const int edges = (mb_type & (MB_TYPE_16x16|MB_TYPE_SKIP))
6577 == (MB_TYPE_16x16|MB_TYPE_SKIP) ? 1 : 4;
6578 // how often to recheck mv-based bS when iterating between edges
6579 const int mask_edge = (mb_type & (MB_TYPE_16x16 | (MB_TYPE_16x8 << dir))) ? 3 :
6580 (mb_type & (MB_TYPE_8x16 >> dir)) ? 1 : 0;
6581 // how often to recheck mv-based bS when iterating along each edge
6582 const int mask_par0 = mb_type & (MB_TYPE_16x16 | (MB_TYPE_8x16 >> dir));
6584 if (first_vertical_edge_done) {
6586 first_vertical_edge_done = 0;
6589 if (h->deblocking_filter==2 && h->slice_table[mbm_xy] != h->slice_table[mb_xy])
6592 if (FRAME_MBAFF && (dir == 1) && ((mb_y&1) == 0) && start == 0
6593 && !IS_INTERLACED(mb_type)
6594 && IS_INTERLACED(mbm_type)
6596 // This is a special case in the norm where the filtering must
6597 // be done twice (one each of the field) even if we are in a
6598 // frame macroblock.
6600 static const int nnz_idx[4] = {4,5,6,3};
6601 unsigned int tmp_linesize = 2 * linesize;
6602 unsigned int tmp_uvlinesize = 2 * uvlinesize;
6603 int mbn_xy = mb_xy - 2 * s->mb_stride;
6608 for(j=0; j<2; j++, mbn_xy += s->mb_stride){
6609 if( IS_INTRA(mb_type) ||
6610 IS_INTRA(s->current_picture.mb_type[mbn_xy]) ) {
6611 bS[0] = bS[1] = bS[2] = bS[3] = 3;
6613 const uint8_t *mbn_nnz = h->non_zero_count[mbn_xy];
6614 for( i = 0; i < 4; i++ ) {
6615 if( h->non_zero_count_cache[scan8[0]+i] != 0 ||
6616 mbn_nnz[nnz_idx[i]] != 0 )
6622 // Do not use s->qscale as luma quantizer because it has not the same
6623 // value in IPCM macroblocks.
6624 qp = ( s->current_picture.qscale_table[mb_xy] + s->current_picture.qscale_table[mbn_xy] + 1 ) >> 1;
6625 tprintf(s->avctx, "filter mb:%d/%d dir:%d edge:%d, QPy:%d ls:%d uvls:%d", mb_x, mb_y, dir, edge, qp, tmp_linesize, tmp_uvlinesize);
6626 { int i; for (i = 0; i < 4; i++) tprintf(s->avctx, " bS[%d]:%d", i, bS[i]); tprintf(s->avctx, "\n"); }
6627 filter_mb_edgeh( h, &img_y[j*linesize], tmp_linesize, bS, qp );
6628 filter_mb_edgech( h, &img_cb[j*uvlinesize], tmp_uvlinesize, bS,
6629 ( h->chroma_qp[0] + get_chroma_qp( h, 0, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1);
6630 filter_mb_edgech( h, &img_cr[j*uvlinesize], tmp_uvlinesize, bS,
6631 ( h->chroma_qp[1] + get_chroma_qp( h, 1, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1);
6638 for( edge = start; edge < edges; edge++ ) {
6639 /* mbn_xy: neighbor macroblock */
6640 const int mbn_xy = edge > 0 ? mb_xy : mbm_xy;
6641 const int mbn_type = s->current_picture.mb_type[mbn_xy];
6645 if( (edge&1) && IS_8x8DCT(mb_type) )
6648 if( IS_INTRA(mb_type) ||
6649 IS_INTRA(mbn_type) ) {
6652 if ( (!IS_INTERLACED(mb_type) && !IS_INTERLACED(mbm_type))
6653 || ((FRAME_MBAFF || (s->picture_structure != PICT_FRAME)) && (dir == 0))
6662 bS[0] = bS[1] = bS[2] = bS[3] = value;
6667 if( edge & mask_edge ) {
6668 bS[0] = bS[1] = bS[2] = bS[3] = 0;
6671 else if( FRAME_MBAFF && IS_INTERLACED(mb_type ^ mbn_type)) {
6672 bS[0] = bS[1] = bS[2] = bS[3] = 1;
6675 else if( mask_par0 && (edge || (mbn_type & (MB_TYPE_16x16 | (MB_TYPE_8x16 >> dir)))) ) {
6676 int b_idx= 8 + 4 + edge * (dir ? 8:1);
6677 int bn_idx= b_idx - (dir ? 8:1);
6679 for( l = 0; !v && l < 1 + (h->slice_type == B_TYPE); l++ ) {
6680 v |= ref2frm[h->ref_cache[l][b_idx]+2] != ref2frm[h->ref_cache[l][bn_idx]+2] ||
6681 FFABS( h->mv_cache[l][b_idx][0] - h->mv_cache[l][bn_idx][0] ) >= 4 ||
6682 FFABS( h->mv_cache[l][b_idx][1] - h->mv_cache[l][bn_idx][1] ) >= mvy_limit;
6684 bS[0] = bS[1] = bS[2] = bS[3] = v;
6690 for( i = 0; i < 4; i++ ) {
6691 int x = dir == 0 ? edge : i;
6692 int y = dir == 0 ? i : edge;
6693 int b_idx= 8 + 4 + x + 8*y;
6694 int bn_idx= b_idx - (dir ? 8:1);
6696 if( h->non_zero_count_cache[b_idx] != 0 ||
6697 h->non_zero_count_cache[bn_idx] != 0 ) {
6703 for( l = 0; l < 1 + (h->slice_type == B_TYPE); l++ ) {
6704 if( ref2frm[h->ref_cache[l][b_idx]+2] != ref2frm[h->ref_cache[l][bn_idx]+2] ||
6705 FFABS( h->mv_cache[l][b_idx][0] - h->mv_cache[l][bn_idx][0] ) >= 4 ||
6706 FFABS( h->mv_cache[l][b_idx][1] - h->mv_cache[l][bn_idx][1] ) >= mvy_limit ) {
6714 if(bS[0]+bS[1]+bS[2]+bS[3] == 0)
6719 // Do not use s->qscale as luma quantizer because it has not the same
6720 // value in IPCM macroblocks.
6721 qp = ( s->current_picture.qscale_table[mb_xy] + s->current_picture.qscale_table[mbn_xy] + 1 ) >> 1;
6722 //tprintf(s->avctx, "filter mb:%d/%d dir:%d edge:%d, QPy:%d, QPc:%d, QPcn:%d\n", mb_x, mb_y, dir, edge, qp, h->chroma_qp, s->current_picture.qscale_table[mbn_xy]);
6723 tprintf(s->avctx, "filter mb:%d/%d dir:%d edge:%d, QPy:%d ls:%d uvls:%d", mb_x, mb_y, dir, edge, qp, linesize, uvlinesize);
6724 { int i; for (i = 0; i < 4; i++) tprintf(s->avctx, " bS[%d]:%d", i, bS[i]); tprintf(s->avctx, "\n"); }
6726 filter_mb_edgev( h, &img_y[4*edge], linesize, bS, qp );
6727 if( (edge&1) == 0 ) {
6728 filter_mb_edgecv( h, &img_cb[2*edge], uvlinesize, bS,
6729 ( h->chroma_qp[0] + get_chroma_qp( h, 0, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1);
6730 filter_mb_edgecv( h, &img_cr[2*edge], uvlinesize, bS,
6731 ( h->chroma_qp[1] + get_chroma_qp( h, 1, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1);
6734 filter_mb_edgeh( h, &img_y[4*edge*linesize], linesize, bS, qp );
6735 if( (edge&1) == 0 ) {
6736 filter_mb_edgech( h, &img_cb[2*edge*uvlinesize], uvlinesize, bS,
6737 ( h->chroma_qp[0] + get_chroma_qp( h, 0, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1);
6738 filter_mb_edgech( h, &img_cr[2*edge*uvlinesize], uvlinesize, bS,
6739 ( h->chroma_qp[1] + get_chroma_qp( h, 1, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1);
6746 static int decode_slice(struct AVCodecContext *avctx, H264Context *h){
6747 MpegEncContext * const s = &h->s;
6748 const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
6752 if( h->pps.cabac ) {
6756 align_get_bits( &s->gb );
6759 ff_init_cabac_states( &h->cabac);
6760 ff_init_cabac_decoder( &h->cabac,
6761 s->gb.buffer + get_bits_count(&s->gb)/8,
6762 ( s->gb.size_in_bits - get_bits_count(&s->gb) + 7)/8);
6763 /* calculate pre-state */
6764 for( i= 0; i < 460; i++ ) {
6766 if( h->slice_type == I_TYPE )
6767 pre = av_clip( ((cabac_context_init_I[i][0] * s->qscale) >>4 ) + cabac_context_init_I[i][1], 1, 126 );
6769 pre = av_clip( ((cabac_context_init_PB[h->cabac_init_idc][i][0] * s->qscale) >>4 ) + cabac_context_init_PB[h->cabac_init_idc][i][1], 1, 126 );
6772 h->cabac_state[i] = 2 * ( 63 - pre ) + 0;
6774 h->cabac_state[i] = 2 * ( pre - 64 ) + 1;
6779 int ret = decode_mb_cabac(h);
6781 //STOP_TIMER("decode_mb_cabac")
6783 if(ret>=0) hl_decode_mb(h);
6785 if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
6788 if(ret>=0) ret = decode_mb_cabac(h);
6790 if(ret>=0) hl_decode_mb(h);
6793 eos = get_cabac_terminate( &h->cabac );
6795 if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
6796 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d, bytestream (%td)\n", s->mb_x, s->mb_y, h->cabac.bytestream_end - h->cabac.bytestream);
6797 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
6801 if( ++s->mb_x >= s->mb_width ) {
6803 ff_draw_horiz_band(s, 16*s->mb_y, 16);
6805 if(FIELD_OR_MBAFF_PICTURE) {
6810 if( eos || s->mb_y >= s->mb_height ) {
6811 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
6812 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
6819 int ret = decode_mb_cavlc(h);
6821 if(ret>=0) hl_decode_mb(h);
6823 if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
6825 ret = decode_mb_cavlc(h);
6827 if(ret>=0) hl_decode_mb(h);
6832 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
6833 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
6838 if(++s->mb_x >= s->mb_width){
6840 ff_draw_horiz_band(s, 16*s->mb_y, 16);
6842 if(FIELD_OR_MBAFF_PICTURE) {
6845 if(s->mb_y >= s->mb_height){
6846 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
6848 if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
6849 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
6853 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
6860 if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
6861 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
6862 if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
6863 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
6867 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
6876 for(;s->mb_y < s->mb_height; s->mb_y++){
6877 for(;s->mb_x < s->mb_width; s->mb_x++){
6878 int ret= decode_mb(h);
6883 av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
6884 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
6889 if(++s->mb_x >= s->mb_width){
6891 if(++s->mb_y >= s->mb_height){
6892 if(get_bits_count(s->gb) == s->gb.size_in_bits){
6893 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
6897 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
6904 if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
6905 if(get_bits_count(s->gb) == s->gb.size_in_bits){
6906 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
6910 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
6917 ff_draw_horiz_band(s, 16*s->mb_y, 16);
6920 return -1; //not reached
6923 static int decode_unregistered_user_data(H264Context *h, int size){
6924 MpegEncContext * const s = &h->s;
6925 uint8_t user_data[16+256];
6931 for(i=0; i<sizeof(user_data)-1 && i<size; i++){
6932 user_data[i]= get_bits(&s->gb, 8);
6936 e= sscanf(user_data+16, "x264 - core %d"/*%s - H.264/MPEG-4 AVC codec - Copyleft 2005 - http://www.videolan.org/x264.html*/, &build);
6937 if(e==1 && build>=0)
6938 h->x264_build= build;
6940 if(s->avctx->debug & FF_DEBUG_BUGS)
6941 av_log(s->avctx, AV_LOG_DEBUG, "user data:\"%s\"\n", user_data+16);
6944 skip_bits(&s->gb, 8);
6949 static int decode_sei(H264Context *h){
6950 MpegEncContext * const s = &h->s;
6952 while(get_bits_count(&s->gb) + 16 < s->gb.size_in_bits){
6957 type+= show_bits(&s->gb, 8);
6958 }while(get_bits(&s->gb, 8) == 255);
6962 size+= show_bits(&s->gb, 8);
6963 }while(get_bits(&s->gb, 8) == 255);
6967 if(decode_unregistered_user_data(h, size) < 0)
6971 skip_bits(&s->gb, 8*size);
6974 //FIXME check bits here
6975 align_get_bits(&s->gb);
6981 static inline void decode_hrd_parameters(H264Context *h, SPS *sps){
6982 MpegEncContext * const s = &h->s;
6984 cpb_count = get_ue_golomb(&s->gb) + 1;
6985 get_bits(&s->gb, 4); /* bit_rate_scale */
6986 get_bits(&s->gb, 4); /* cpb_size_scale */
6987 for(i=0; i<cpb_count; i++){
6988 get_ue_golomb(&s->gb); /* bit_rate_value_minus1 */
6989 get_ue_golomb(&s->gb); /* cpb_size_value_minus1 */
6990 get_bits1(&s->gb); /* cbr_flag */
6992 get_bits(&s->gb, 5); /* initial_cpb_removal_delay_length_minus1 */
6993 get_bits(&s->gb, 5); /* cpb_removal_delay_length_minus1 */
6994 get_bits(&s->gb, 5); /* dpb_output_delay_length_minus1 */
6995 get_bits(&s->gb, 5); /* time_offset_length */
6998 static inline int decode_vui_parameters(H264Context *h, SPS *sps){
6999 MpegEncContext * const s = &h->s;
7000 int aspect_ratio_info_present_flag;
7001 unsigned int aspect_ratio_idc;
7002 int nal_hrd_parameters_present_flag, vcl_hrd_parameters_present_flag;
7004 aspect_ratio_info_present_flag= get_bits1(&s->gb);
7006 if( aspect_ratio_info_present_flag ) {
7007 aspect_ratio_idc= get_bits(&s->gb, 8);
7008 if( aspect_ratio_idc == EXTENDED_SAR ) {
7009 sps->sar.num= get_bits(&s->gb, 16);
7010 sps->sar.den= get_bits(&s->gb, 16);
7011 }else if(aspect_ratio_idc < 14){
7012 sps->sar= pixel_aspect[aspect_ratio_idc];
7014 av_log(h->s.avctx, AV_LOG_ERROR, "illegal aspect ratio\n");
7021 // s->avctx->aspect_ratio= sar_width*s->width / (float)(s->height*sar_height);
7023 if(get_bits1(&s->gb)){ /* overscan_info_present_flag */
7024 get_bits1(&s->gb); /* overscan_appropriate_flag */
7027 if(get_bits1(&s->gb)){ /* video_signal_type_present_flag */
7028 get_bits(&s->gb, 3); /* video_format */
7029 get_bits1(&s->gb); /* video_full_range_flag */
7030 if(get_bits1(&s->gb)){ /* colour_description_present_flag */
7031 get_bits(&s->gb, 8); /* colour_primaries */
7032 get_bits(&s->gb, 8); /* transfer_characteristics */
7033 get_bits(&s->gb, 8); /* matrix_coefficients */
7037 if(get_bits1(&s->gb)){ /* chroma_location_info_present_flag */
7038 get_ue_golomb(&s->gb); /* chroma_sample_location_type_top_field */
7039 get_ue_golomb(&s->gb); /* chroma_sample_location_type_bottom_field */
7042 sps->timing_info_present_flag = get_bits1(&s->gb);
7043 if(sps->timing_info_present_flag){
7044 sps->num_units_in_tick = get_bits_long(&s->gb, 32);
7045 sps->time_scale = get_bits_long(&s->gb, 32);
7046 sps->fixed_frame_rate_flag = get_bits1(&s->gb);
7049 nal_hrd_parameters_present_flag = get_bits1(&s->gb);
7050 if(nal_hrd_parameters_present_flag)
7051 decode_hrd_parameters(h, sps);
7052 vcl_hrd_parameters_present_flag = get_bits1(&s->gb);
7053 if(vcl_hrd_parameters_present_flag)
7054 decode_hrd_parameters(h, sps);
7055 if(nal_hrd_parameters_present_flag || vcl_hrd_parameters_present_flag)
7056 get_bits1(&s->gb); /* low_delay_hrd_flag */
7057 get_bits1(&s->gb); /* pic_struct_present_flag */
7059 sps->bitstream_restriction_flag = get_bits1(&s->gb);
7060 if(sps->bitstream_restriction_flag){
7061 unsigned int num_reorder_frames;
7062 get_bits1(&s->gb); /* motion_vectors_over_pic_boundaries_flag */
7063 get_ue_golomb(&s->gb); /* max_bytes_per_pic_denom */
7064 get_ue_golomb(&s->gb); /* max_bits_per_mb_denom */
7065 get_ue_golomb(&s->gb); /* log2_max_mv_length_horizontal */
7066 get_ue_golomb(&s->gb); /* log2_max_mv_length_vertical */
7067 num_reorder_frames= get_ue_golomb(&s->gb);
7068 get_ue_golomb(&s->gb); /*max_dec_frame_buffering*/
7070 if(num_reorder_frames > 16 /*max_dec_frame_buffering || max_dec_frame_buffering > 16*/){
7071 av_log(h->s.avctx, AV_LOG_ERROR, "illegal num_reorder_frames %d\n", num_reorder_frames);
7075 sps->num_reorder_frames= num_reorder_frames;
7081 static void decode_scaling_list(H264Context *h, uint8_t *factors, int size,
7082 const uint8_t *jvt_list, const uint8_t *fallback_list){
7083 MpegEncContext * const s = &h->s;
7084 int i, last = 8, next = 8;
7085 const uint8_t *scan = size == 16 ? zigzag_scan : zigzag_scan8x8;
7086 if(!get_bits1(&s->gb)) /* matrix not written, we use the predicted one */
7087 memcpy(factors, fallback_list, size*sizeof(uint8_t));
7089 for(i=0;i<size;i++){
7091 next = (last + get_se_golomb(&s->gb)) & 0xff;
7092 if(!i && !next){ /* matrix not written, we use the preset one */
7093 memcpy(factors, jvt_list, size*sizeof(uint8_t));
7096 last = factors[scan[i]] = next ? next : last;
7100 static void decode_scaling_matrices(H264Context *h, SPS *sps, PPS *pps, int is_sps,
7101 uint8_t (*scaling_matrix4)[16], uint8_t (*scaling_matrix8)[64]){
7102 MpegEncContext * const s = &h->s;
7103 int fallback_sps = !is_sps && sps->scaling_matrix_present;
7104 const uint8_t *fallback[4] = {
7105 fallback_sps ? sps->scaling_matrix4[0] : default_scaling4[0],
7106 fallback_sps ? sps->scaling_matrix4[3] : default_scaling4[1],
7107 fallback_sps ? sps->scaling_matrix8[0] : default_scaling8[0],
7108 fallback_sps ? sps->scaling_matrix8[1] : default_scaling8[1]
7110 if(get_bits1(&s->gb)){
7111 sps->scaling_matrix_present |= is_sps;
7112 decode_scaling_list(h,scaling_matrix4[0],16,default_scaling4[0],fallback[0]); // Intra, Y
7113 decode_scaling_list(h,scaling_matrix4[1],16,default_scaling4[0],scaling_matrix4[0]); // Intra, Cr
7114 decode_scaling_list(h,scaling_matrix4[2],16,default_scaling4[0],scaling_matrix4[1]); // Intra, Cb
7115 decode_scaling_list(h,scaling_matrix4[3],16,default_scaling4[1],fallback[1]); // Inter, Y
7116 decode_scaling_list(h,scaling_matrix4[4],16,default_scaling4[1],scaling_matrix4[3]); // Inter, Cr
7117 decode_scaling_list(h,scaling_matrix4[5],16,default_scaling4[1],scaling_matrix4[4]); // Inter, Cb
7118 if(is_sps || pps->transform_8x8_mode){
7119 decode_scaling_list(h,scaling_matrix8[0],64,default_scaling8[0],fallback[2]); // Intra, Y
7120 decode_scaling_list(h,scaling_matrix8[1],64,default_scaling8[1],fallback[3]); // Inter, Y
7122 } else if(fallback_sps) {
7123 memcpy(scaling_matrix4, sps->scaling_matrix4, 6*16*sizeof(uint8_t));
7124 memcpy(scaling_matrix8, sps->scaling_matrix8, 2*64*sizeof(uint8_t));
7129 * Returns and optionally allocates SPS / PPS structures in the supplied array 'vec'
7132 alloc_parameter_set(H264Context *h, void **vec, const unsigned int id, const unsigned int max,
7133 const size_t size, const char *name)
7136 av_log(h->s.avctx, AV_LOG_ERROR, "%s_id (%d) out of range\n", name, id);
7141 vec[id] = av_mallocz(size);
7143 av_log(h->s.avctx, AV_LOG_ERROR, "cannot allocate memory for %s\n", name);
7148 static inline int decode_seq_parameter_set(H264Context *h){
7149 MpegEncContext * const s = &h->s;
7150 int profile_idc, level_idc;
7151 unsigned int sps_id, tmp, mb_width, mb_height;
7155 profile_idc= get_bits(&s->gb, 8);
7156 get_bits1(&s->gb); //constraint_set0_flag
7157 get_bits1(&s->gb); //constraint_set1_flag
7158 get_bits1(&s->gb); //constraint_set2_flag
7159 get_bits1(&s->gb); //constraint_set3_flag
7160 get_bits(&s->gb, 4); // reserved
7161 level_idc= get_bits(&s->gb, 8);
7162 sps_id= get_ue_golomb(&s->gb);
7164 sps = alloc_parameter_set(h, (void **)h->sps_buffers, sps_id, MAX_SPS_COUNT, sizeof(SPS), "sps");
7168 sps->profile_idc= profile_idc;
7169 sps->level_idc= level_idc;
7171 if(sps->profile_idc >= 100){ //high profile
7172 if(get_ue_golomb(&s->gb) == 3) //chroma_format_idc
7173 get_bits1(&s->gb); //residual_color_transform_flag
7174 get_ue_golomb(&s->gb); //bit_depth_luma_minus8
7175 get_ue_golomb(&s->gb); //bit_depth_chroma_minus8
7176 sps->transform_bypass = get_bits1(&s->gb);
7177 decode_scaling_matrices(h, sps, NULL, 1, sps->scaling_matrix4, sps->scaling_matrix8);
7179 sps->scaling_matrix_present = 0;
7181 sps->log2_max_frame_num= get_ue_golomb(&s->gb) + 4;
7182 sps->poc_type= get_ue_golomb(&s->gb);
7184 if(sps->poc_type == 0){ //FIXME #define
7185 sps->log2_max_poc_lsb= get_ue_golomb(&s->gb) + 4;
7186 } else if(sps->poc_type == 1){//FIXME #define
7187 sps->delta_pic_order_always_zero_flag= get_bits1(&s->gb);
7188 sps->offset_for_non_ref_pic= get_se_golomb(&s->gb);
7189 sps->offset_for_top_to_bottom_field= get_se_golomb(&s->gb);
7190 tmp= get_ue_golomb(&s->gb);
7192 if(tmp >= sizeof(sps->offset_for_ref_frame) / sizeof(sps->offset_for_ref_frame[0])){
7193 av_log(h->s.avctx, AV_LOG_ERROR, "poc_cycle_length overflow %u\n", tmp);
7196 sps->poc_cycle_length= tmp;
7198 for(i=0; i<sps->poc_cycle_length; i++)
7199 sps->offset_for_ref_frame[i]= get_se_golomb(&s->gb);
7200 }else if(sps->poc_type != 2){
7201 av_log(h->s.avctx, AV_LOG_ERROR, "illegal POC type %d\n", sps->poc_type);
7205 tmp= get_ue_golomb(&s->gb);
7206 if(tmp > MAX_PICTURE_COUNT-2){
7207 av_log(h->s.avctx, AV_LOG_ERROR, "too many reference frames\n");
7209 sps->ref_frame_count= tmp;
7210 sps->gaps_in_frame_num_allowed_flag= get_bits1(&s->gb);
7211 mb_width= get_ue_golomb(&s->gb) + 1;
7212 mb_height= get_ue_golomb(&s->gb) + 1;
7213 if(mb_width >= INT_MAX/16 || mb_height >= INT_MAX/16 ||
7214 avcodec_check_dimensions(NULL, 16*mb_width, 16*mb_height)){
7215 av_log(h->s.avctx, AV_LOG_ERROR, "mb_width/height overflow\n");
7218 sps->mb_width = mb_width;
7219 sps->mb_height= mb_height;
7221 sps->frame_mbs_only_flag= get_bits1(&s->gb);
7222 if(!sps->frame_mbs_only_flag)
7223 sps->mb_aff= get_bits1(&s->gb);
7227 sps->direct_8x8_inference_flag= get_bits1(&s->gb);
7229 #ifndef ALLOW_INTERLACE
7231 av_log(h->s.avctx, AV_LOG_ERROR, "MBAFF support not included; enable it at compile-time.\n");
7233 if(!sps->direct_8x8_inference_flag && sps->mb_aff)
7234 av_log(h->s.avctx, AV_LOG_ERROR, "MBAFF + !direct_8x8_inference is not implemented\n");
7236 sps->crop= get_bits1(&s->gb);
7238 sps->crop_left = get_ue_golomb(&s->gb);
7239 sps->crop_right = get_ue_golomb(&s->gb);
7240 sps->crop_top = get_ue_golomb(&s->gb);
7241 sps->crop_bottom= get_ue_golomb(&s->gb);
7242 if(sps->crop_left || sps->crop_top){
7243 av_log(h->s.avctx, AV_LOG_ERROR, "insane cropping not completely supported, this could look slightly wrong ...\n");
7249 sps->crop_bottom= 0;
7252 sps->vui_parameters_present_flag= get_bits1(&s->gb);
7253 if( sps->vui_parameters_present_flag )
7254 decode_vui_parameters(h, sps);
7256 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
7257 av_log(h->s.avctx, AV_LOG_DEBUG, "sps:%u profile:%d/%d poc:%d ref:%d %dx%d %s %s crop:%d/%d/%d/%d %s\n",
7258 sps_id, sps->profile_idc, sps->level_idc,
7260 sps->ref_frame_count,
7261 sps->mb_width, sps->mb_height,
7262 sps->frame_mbs_only_flag ? "FRM" : (sps->mb_aff ? "MB-AFF" : "PIC-AFF"),
7263 sps->direct_8x8_inference_flag ? "8B8" : "",
7264 sps->crop_left, sps->crop_right,
7265 sps->crop_top, sps->crop_bottom,
7266 sps->vui_parameters_present_flag ? "VUI" : ""
7273 build_qp_table(PPS *pps, int t, int index)
7276 for(i = 0; i < 255; i++)
7277 pps->chroma_qp_table[t][i & 0xff] = chroma_qp[av_clip(i + index, 0, 51)];
7280 static inline int decode_picture_parameter_set(H264Context *h, int bit_length){
7281 MpegEncContext * const s = &h->s;
7282 unsigned int tmp, pps_id= get_ue_golomb(&s->gb);
7285 pps = alloc_parameter_set(h, (void **)h->pps_buffers, pps_id, MAX_PPS_COUNT, sizeof(PPS), "pps");
7289 tmp= get_ue_golomb(&s->gb);
7290 if(tmp>=MAX_SPS_COUNT || h->sps_buffers[tmp] == NULL){
7291 av_log(h->s.avctx, AV_LOG_ERROR, "sps_id out of range\n");
7296 pps->cabac= get_bits1(&s->gb);
7297 pps->pic_order_present= get_bits1(&s->gb);
7298 pps->slice_group_count= get_ue_golomb(&s->gb) + 1;
7299 if(pps->slice_group_count > 1 ){
7300 pps->mb_slice_group_map_type= get_ue_golomb(&s->gb);
7301 av_log(h->s.avctx, AV_LOG_ERROR, "FMO not supported\n");
7302 switch(pps->mb_slice_group_map_type){
7305 | for( i = 0; i <= num_slice_groups_minus1; i++ ) | | |
7306 | run_length[ i ] |1 |ue(v) |
7311 | for( i = 0; i < num_slice_groups_minus1; i++ ) | | |
7313 | top_left_mb[ i ] |1 |ue(v) |
7314 | bottom_right_mb[ i ] |1 |ue(v) |
7322 | slice_group_change_direction_flag |1 |u(1) |
7323 | slice_group_change_rate_minus1 |1 |ue(v) |
7328 | slice_group_id_cnt_minus1 |1 |ue(v) |
7329 | for( i = 0; i <= slice_group_id_cnt_minus1; i++ | | |
7331 | slice_group_id[ i ] |1 |u(v) |
7336 pps->ref_count[0]= get_ue_golomb(&s->gb) + 1;
7337 pps->ref_count[1]= get_ue_golomb(&s->gb) + 1;
7338 if(pps->ref_count[0]-1 > 32-1 || pps->ref_count[1]-1 > 32-1){
7339 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow (pps)\n");
7340 pps->ref_count[0]= pps->ref_count[1]= 1;
7344 pps->weighted_pred= get_bits1(&s->gb);
7345 pps->weighted_bipred_idc= get_bits(&s->gb, 2);
7346 pps->init_qp= get_se_golomb(&s->gb) + 26;
7347 pps->init_qs= get_se_golomb(&s->gb) + 26;
7348 pps->chroma_qp_index_offset[0]= get_se_golomb(&s->gb);
7349 pps->deblocking_filter_parameters_present= get_bits1(&s->gb);
7350 pps->constrained_intra_pred= get_bits1(&s->gb);
7351 pps->redundant_pic_cnt_present = get_bits1(&s->gb);
7353 pps->transform_8x8_mode= 0;
7354 h->dequant_coeff_pps= -1; //contents of sps/pps can change even if id doesn't, so reinit
7355 memset(pps->scaling_matrix4, 16, 6*16*sizeof(uint8_t));
7356 memset(pps->scaling_matrix8, 16, 2*64*sizeof(uint8_t));
7358 if(get_bits_count(&s->gb) < bit_length){
7359 pps->transform_8x8_mode= get_bits1(&s->gb);
7360 decode_scaling_matrices(h, h->sps_buffers[pps->sps_id], pps, 0, pps->scaling_matrix4, pps->scaling_matrix8);
7361 pps->chroma_qp_index_offset[1]= get_se_golomb(&s->gb); //second_chroma_qp_index_offset
7363 pps->chroma_qp_index_offset[1]= pps->chroma_qp_index_offset[0];
7366 build_qp_table(pps, 0, pps->chroma_qp_index_offset[0]);
7367 if(pps->chroma_qp_index_offset[0] != pps->chroma_qp_index_offset[1]) {
7368 build_qp_table(pps, 1, pps->chroma_qp_index_offset[1]);
7369 h->pps.chroma_qp_diff= 1;
7371 memcpy(pps->chroma_qp_table[1], pps->chroma_qp_table[0], 256);
7373 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
7374 av_log(h->s.avctx, AV_LOG_DEBUG, "pps:%u sps:%u %s slice_groups:%d ref:%d/%d %s qp:%d/%d/%d/%d %s %s %s %s\n",
7375 pps_id, pps->sps_id,
7376 pps->cabac ? "CABAC" : "CAVLC",
7377 pps->slice_group_count,
7378 pps->ref_count[0], pps->ref_count[1],
7379 pps->weighted_pred ? "weighted" : "",
7380 pps->init_qp, pps->init_qs, pps->chroma_qp_index_offset[0], pps->chroma_qp_index_offset[1],
7381 pps->deblocking_filter_parameters_present ? "LPAR" : "",
7382 pps->constrained_intra_pred ? "CONSTR" : "",
7383 pps->redundant_pic_cnt_present ? "REDU" : "",
7384 pps->transform_8x8_mode ? "8x8DCT" : ""
7392 * Call decode_slice() for each context.
7394 * @param h h264 master context
7395 * @param context_count number of contexts to execute
7397 static void execute_decode_slices(H264Context *h, int context_count){
7398 MpegEncContext * const s = &h->s;
7399 AVCodecContext * const avctx= s->avctx;
7403 if(context_count == 1) {
7404 decode_slice(avctx, h);
7406 for(i = 1; i < context_count; i++) {
7407 hx = h->thread_context[i];
7408 hx->s.error_resilience = avctx->error_resilience;
7409 hx->s.error_count = 0;
7412 avctx->execute(avctx, (void *)decode_slice,
7413 (void **)h->thread_context, NULL, context_count);
7415 /* pull back stuff from slices to master context */
7416 hx = h->thread_context[context_count - 1];
7417 s->mb_x = hx->s.mb_x;
7418 s->mb_y = hx->s.mb_y;
7419 s->dropable = hx->s.dropable;
7420 s->picture_structure = hx->s.picture_structure;
7421 for(i = 1; i < context_count; i++)
7422 h->s.error_count += h->thread_context[i]->s.error_count;
7427 static int decode_nal_units(H264Context *h, uint8_t *buf, int buf_size){
7428 MpegEncContext * const s = &h->s;
7429 AVCodecContext * const avctx= s->avctx;
7431 H264Context *hx; ///< thread context
7432 int context_count = 0;
7434 h->max_contexts = avctx->thread_count;
7437 for(i=0; i<50; i++){
7438 av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
7441 if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
7442 h->current_slice = 0;
7443 if (!s->first_field)
7444 s->current_picture_ptr= NULL;
7456 if(buf_index >= buf_size) break;
7458 for(i = 0; i < h->nal_length_size; i++)
7459 nalsize = (nalsize << 8) | buf[buf_index++];
7460 if(nalsize <= 1 || (nalsize+buf_index > buf_size)){
7465 av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
7470 // start code prefix search
7471 for(; buf_index + 3 < buf_size; buf_index++){
7472 // This should always succeed in the first iteration.
7473 if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
7477 if(buf_index+3 >= buf_size) break;
7482 hx = h->thread_context[context_count];
7484 ptr= decode_nal(hx, buf + buf_index, &dst_length, &consumed, h->is_avc ? nalsize : buf_size - buf_index);
7485 if (ptr==NULL || dst_length < 0){
7488 while(ptr[dst_length - 1] == 0 && dst_length > 0)
7490 bit_length= !dst_length ? 0 : (8*dst_length - decode_rbsp_trailing(h, ptr + dst_length - 1));
7492 if(s->avctx->debug&FF_DEBUG_STARTCODE){
7493 av_log(h->s.avctx, AV_LOG_DEBUG, "NAL %d at %d/%d length %d\n", hx->nal_unit_type, buf_index, buf_size, dst_length);
7496 if (h->is_avc && (nalsize != consumed))
7497 av_log(h->s.avctx, AV_LOG_ERROR, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
7499 buf_index += consumed;
7501 if( (s->hurry_up == 1 && h->nal_ref_idc == 0) //FIXME do not discard SEI id
7502 ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
7507 switch(hx->nal_unit_type){
7509 if (h->nal_unit_type != NAL_IDR_SLICE) {
7510 av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
7513 idr(h); //FIXME ensure we don't loose some frames if there is reordering
7515 init_get_bits(&hx->s.gb, ptr, bit_length);
7517 hx->inter_gb_ptr= &hx->s.gb;
7518 hx->s.data_partitioning = 0;
7520 if((err = decode_slice_header(hx, h)))
7523 s->current_picture_ptr->key_frame|= (hx->nal_unit_type == NAL_IDR_SLICE);
7524 if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5
7525 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
7526 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type!=B_TYPE)
7527 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type==I_TYPE)
7528 && avctx->skip_frame < AVDISCARD_ALL)
7532 init_get_bits(&hx->s.gb, ptr, bit_length);
7534 hx->inter_gb_ptr= NULL;
7535 hx->s.data_partitioning = 1;
7537 err = decode_slice_header(hx, h);
7540 init_get_bits(&hx->intra_gb, ptr, bit_length);
7541 hx->intra_gb_ptr= &hx->intra_gb;
7544 init_get_bits(&hx->inter_gb, ptr, bit_length);
7545 hx->inter_gb_ptr= &hx->inter_gb;
7547 if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
7548 && s->context_initialized
7550 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
7551 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type!=B_TYPE)
7552 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type==I_TYPE)
7553 && avctx->skip_frame < AVDISCARD_ALL)
7557 init_get_bits(&s->gb, ptr, bit_length);
7561 init_get_bits(&s->gb, ptr, bit_length);
7562 decode_seq_parameter_set(h);
7564 if(s->flags& CODEC_FLAG_LOW_DELAY)
7567 if(avctx->has_b_frames < 2)
7568 avctx->has_b_frames= !s->low_delay;
7571 init_get_bits(&s->gb, ptr, bit_length);
7573 decode_picture_parameter_set(h, bit_length);
7577 case NAL_END_SEQUENCE:
7578 case NAL_END_STREAM:
7579 case NAL_FILLER_DATA:
7581 case NAL_AUXILIARY_SLICE:
7584 av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", h->nal_unit_type, bit_length);
7587 if(context_count == h->max_contexts) {
7588 execute_decode_slices(h, context_count);
7593 av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
7595 /* Slice could not be decoded in parallel mode, copy down
7596 * NAL unit stuff to context 0 and restart. Note that
7597 * rbsp_buffer is not transfered, but since we no longer
7598 * run in parallel mode this should not be an issue. */
7599 h->nal_unit_type = hx->nal_unit_type;
7600 h->nal_ref_idc = hx->nal_ref_idc;
7606 execute_decode_slices(h, context_count);
7611 * returns the number of bytes consumed for building the current frame
7613 static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
7614 if(s->flags&CODEC_FLAG_TRUNCATED){
7615 pos -= s->parse_context.last_index;
7616 if(pos<0) pos=0; // FIXME remove (unneeded?)
7620 if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
7621 if(pos+10>buf_size) pos=buf_size; // oops ;)
7627 static int decode_frame(AVCodecContext *avctx,
7628 void *data, int *data_size,
7629 uint8_t *buf, int buf_size)
7631 H264Context *h = avctx->priv_data;
7632 MpegEncContext *s = &h->s;
7633 AVFrame *pict = data;
7636 s->flags= avctx->flags;
7637 s->flags2= avctx->flags2;
7639 /* no supplementary picture */
7640 if (buf_size == 0) {
7644 //FIXME factorize this with the output code below
7645 out = h->delayed_pic[0];
7647 for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame; i++)
7648 if(h->delayed_pic[i]->poc < out->poc){
7649 out = h->delayed_pic[i];
7653 for(i=out_idx; h->delayed_pic[i]; i++)
7654 h->delayed_pic[i] = h->delayed_pic[i+1];
7657 *data_size = sizeof(AVFrame);
7658 *pict= *(AVFrame*)out;
7664 if(s->flags&CODEC_FLAG_TRUNCATED){
7665 int next= ff_h264_find_frame_end(h, buf, buf_size);
7667 if( ff_combine_frame(&s->parse_context, next, (const uint8_t **)&buf, &buf_size) < 0 )
7669 //printf("next:%d buf_size:%d last_index:%d\n", next, buf_size, s->parse_context.last_index);
7672 if(h->is_avc && !h->got_avcC) {
7673 int i, cnt, nalsize;
7674 unsigned char *p = avctx->extradata;
7675 if(avctx->extradata_size < 7) {
7676 av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
7680 av_log(avctx, AV_LOG_ERROR, "Unknown avcC version %d\n", *p);
7683 /* sps and pps in the avcC always have length coded with 2 bytes,
7684 so put a fake nal_length_size = 2 while parsing them */
7685 h->nal_length_size = 2;
7686 // Decode sps from avcC
7687 cnt = *(p+5) & 0x1f; // Number of sps
7689 for (i = 0; i < cnt; i++) {
7690 nalsize = AV_RB16(p) + 2;
7691 if(decode_nal_units(h, p, nalsize) < 0) {
7692 av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
7697 // Decode pps from avcC
7698 cnt = *(p++); // Number of pps
7699 for (i = 0; i < cnt; i++) {
7700 nalsize = AV_RB16(p) + 2;
7701 if(decode_nal_units(h, p, nalsize) != nalsize) {
7702 av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
7707 // Now store right nal length size, that will be use to parse all other nals
7708 h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
7709 // Do not reparse avcC
7713 if(avctx->frame_number==0 && !h->is_avc && s->avctx->extradata_size){
7714 if(decode_nal_units(h, s->avctx->extradata, s->avctx->extradata_size) < 0)
7718 buf_index=decode_nal_units(h, buf, buf_size);
7722 if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
7723 if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
7724 av_log(avctx, AV_LOG_ERROR, "no frame!\n");
7728 if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
7729 Picture *out = s->current_picture_ptr;
7730 Picture *cur = s->current_picture_ptr;
7731 Picture *prev = h->delayed_output_pic;
7732 int i, pics, cross_idr, out_of_order, out_idx;
7736 s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
7737 s->current_picture_ptr->pict_type= s->pict_type;
7739 h->prev_frame_num_offset= h->frame_num_offset;
7740 h->prev_frame_num= h->frame_num;
7742 h->prev_poc_msb= h->poc_msb;
7743 h->prev_poc_lsb= h->poc_lsb;
7744 execute_ref_pic_marking(h, h->mmco, h->mmco_index);
7748 * FIXME: Error handling code does not seem to support interlaced
7749 * when slices span multiple rows
7750 * The ff_er_add_slice calls don't work right for bottom
7751 * fields; they cause massive erroneous error concealing
7752 * Error marking covers both fields (top and bottom).
7753 * This causes a mismatched s->error_count
7754 * and a bad error table. Further, the error count goes to
7755 * INT_MAX when called for bottom field, because mb_y is
7756 * past end by one (callers fault) and resync_mb_y != 0
7757 * causes problems for the first MB line, too.
7764 if (s->first_field) {
7765 /* Wait for second field. */
7769 cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
7771 //FIXME do something with unavailable reference frames
7773 #if 0 //decode order
7774 *data_size = sizeof(AVFrame);
7776 /* Sort B-frames into display order */
7778 if(h->sps.bitstream_restriction_flag
7779 && s->avctx->has_b_frames < h->sps.num_reorder_frames){
7780 s->avctx->has_b_frames = h->sps.num_reorder_frames;
7785 while(h->delayed_pic[pics]) pics++;
7787 assert(pics+1 < sizeof(h->delayed_pic) / sizeof(h->delayed_pic[0]));
7789 h->delayed_pic[pics++] = cur;
7790 if(cur->reference == 0)
7791 cur->reference = DELAYED_PIC_REF;
7794 for(i=0; h->delayed_pic[i]; i++)
7795 if(h->delayed_pic[i]->key_frame || h->delayed_pic[i]->poc==0)
7798 out = h->delayed_pic[0];
7800 for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame; i++)
7801 if(h->delayed_pic[i]->poc < out->poc){
7802 out = h->delayed_pic[i];
7806 out_of_order = !cross_idr && prev && out->poc < prev->poc;
7807 if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames)
7809 else if(prev && pics <= s->avctx->has_b_frames)
7811 else if((out_of_order && pics-1 == s->avctx->has_b_frames && pics < 15)
7813 ((!cross_idr && prev && out->poc > prev->poc + 2)
7814 || cur->pict_type == B_TYPE)))
7817 s->avctx->has_b_frames++;
7820 else if(out_of_order)
7823 if(out_of_order || pics > s->avctx->has_b_frames){
7824 for(i=out_idx; h->delayed_pic[i]; i++)
7825 h->delayed_pic[i] = h->delayed_pic[i+1];
7831 *data_size = sizeof(AVFrame);
7832 if(prev && prev != out && prev->reference == DELAYED_PIC_REF)
7833 prev->reference = 0;
7834 h->delayed_output_pic = out;
7838 *pict= *(AVFrame*)out;
7840 av_log(avctx, AV_LOG_DEBUG, "no picture\n");
7844 assert(pict->data[0] || !*data_size);
7845 ff_print_debug_info(s, pict);
7846 //printf("out %d\n", (int)pict->data[0]);
7849 /* Return the Picture timestamp as the frame number */
7850 /* we substract 1 because it is added on utils.c */
7851 avctx->frame_number = s->picture_number - 1;
7853 return get_consumed_bytes(s, buf_index, buf_size);
7856 static inline void fill_mb_avail(H264Context *h){
7857 MpegEncContext * const s = &h->s;
7858 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
7861 h->mb_avail[0]= s->mb_x && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num;
7862 h->mb_avail[1]= h->slice_table[mb_xy - s->mb_stride ] == h->slice_num;
7863 h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num;
7869 h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
7870 h->mb_avail[4]= 1; //FIXME move out
7871 h->mb_avail[5]= 0; //FIXME move out
7878 #define SIZE (COUNT*40)
7884 // int int_temp[10000];
7886 AVCodecContext avctx;
7888 dsputil_init(&dsp, &avctx);
7890 init_put_bits(&pb, temp, SIZE);
7891 printf("testing unsigned exp golomb\n");
7892 for(i=0; i<COUNT; i++){
7894 set_ue_golomb(&pb, i);
7895 STOP_TIMER("set_ue_golomb");
7897 flush_put_bits(&pb);
7899 init_get_bits(&gb, temp, 8*SIZE);
7900 for(i=0; i<COUNT; i++){
7903 s= show_bits(&gb, 24);
7906 j= get_ue_golomb(&gb);
7908 printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
7911 STOP_TIMER("get_ue_golomb");
7915 init_put_bits(&pb, temp, SIZE);
7916 printf("testing signed exp golomb\n");
7917 for(i=0; i<COUNT; i++){
7919 set_se_golomb(&pb, i - COUNT/2);
7920 STOP_TIMER("set_se_golomb");
7922 flush_put_bits(&pb);
7924 init_get_bits(&gb, temp, 8*SIZE);
7925 for(i=0; i<COUNT; i++){
7928 s= show_bits(&gb, 24);
7931 j= get_se_golomb(&gb);
7932 if(j != i - COUNT/2){
7933 printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
7936 STOP_TIMER("get_se_golomb");
7939 printf("testing 4x4 (I)DCT\n");
7942 uint8_t src[16], ref[16];
7943 uint64_t error= 0, max_error=0;
7945 for(i=0; i<COUNT; i++){
7947 // printf("%d %d %d\n", r1, r2, (r2-r1)*16);
7948 for(j=0; j<16; j++){
7949 ref[j]= random()%255;
7950 src[j]= random()%255;
7953 h264_diff_dct_c(block, src, ref, 4);
7956 for(j=0; j<16; j++){
7957 // printf("%d ", block[j]);
7958 block[j]= block[j]*4;
7959 if(j&1) block[j]= (block[j]*4 + 2)/5;
7960 if(j&4) block[j]= (block[j]*4 + 2)/5;
7964 s->dsp.h264_idct_add(ref, block, 4);
7965 /* for(j=0; j<16; j++){
7966 printf("%d ", ref[j]);
7970 for(j=0; j<16; j++){
7971 int diff= FFABS(src[j] - ref[j]);
7974 max_error= FFMAX(max_error, diff);
7977 printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
7979 printf("testing quantizer\n");
7980 for(qp=0; qp<52; qp++){
7982 src1_block[i]= src2_block[i]= random()%255;
7986 printf("Testing NAL layer\n");
7988 uint8_t bitstream[COUNT];
7989 uint8_t nal[COUNT*2];
7991 memset(&h, 0, sizeof(H264Context));
7993 for(i=0; i<COUNT; i++){
8001 for(j=0; j<COUNT; j++){
8002 bitstream[j]= (random() % 255) + 1;
8005 for(j=0; j<zeros; j++){
8006 int pos= random() % COUNT;
8007 while(bitstream[pos] == 0){
8016 nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
8018 printf("encoding failed\n");
8022 out= decode_nal(&h, nal, &out_length, &consumed, nal_length);
8026 if(out_length != COUNT){
8027 printf("incorrect length %d %d\n", out_length, COUNT);
8031 if(consumed != nal_length){
8032 printf("incorrect consumed length %d %d\n", nal_length, consumed);
8036 if(memcmp(bitstream, out, COUNT)){
8037 printf("mismatch\n");
8042 printf("Testing RBSP\n");
8050 static int decode_end(AVCodecContext *avctx)
8052 H264Context *h = avctx->priv_data;
8053 MpegEncContext *s = &h->s;
8055 av_freep(&h->rbsp_buffer[0]);
8056 av_freep(&h->rbsp_buffer[1]);
8057 free_tables(h); //FIXME cleanup init stuff perhaps
8060 // memset(h, 0, sizeof(H264Context));
8066 AVCodec h264_decoder = {
8070 sizeof(H264Context),
8075 /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,