Simplify deblock_left/top condition for deblocking_filter=2
[libav.git] / libavcodec / h264.c
1 /*
2 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4 *
5 * This file is part of FFmpeg.
6 *
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.
11 *
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.
16 *
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
20 */
21
22 /**
23 * @file libavcodec/h264.c
24 * H.264 / AVC / MPEG4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
26 */
27
28 #include "internal.h"
29 #include "dsputil.h"
30 #include "avcodec.h"
31 #include "mpegvideo.h"
32 #include "h264.h"
33 #include "h264data.h"
34 #include "h264_mvpred.h"
35 #include "h264_parser.h"
36 #include "golomb.h"
37 #include "mathops.h"
38 #include "rectangle.h"
39 #include "vdpau_internal.h"
40
41 #include "cabac.h"
42
43 //#undef NDEBUG
44 #include <assert.h>
45
46 static const uint8_t rem6[52]={
47 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,
48 };
49
50 static const uint8_t div6[52]={
51 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,
52 };
53
54 void ff_h264_write_back_intra_pred_mode(H264Context *h){
55 const int mb_xy= h->mb_xy;
56
57 h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1];
58 h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2];
59 h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3];
60 h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4];
61 h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4];
62 h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4];
63 h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4];
64 }
65
66 /**
67 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
68 */
69 int ff_h264_check_intra4x4_pred_mode(H264Context *h){
70 MpegEncContext * const s = &h->s;
71 static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
72 static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
73 int i;
74
75 if(!(h->top_samples_available&0x8000)){
76 for(i=0; i<4; i++){
77 int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
78 if(status<0){
79 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);
80 return -1;
81 } else if(status){
82 h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
83 }
84 }
85 }
86
87 if((h->left_samples_available&0x8888)!=0x8888){
88 static const int mask[4]={0x8000,0x2000,0x80,0x20};
89 for(i=0; i<4; i++){
90 if(!(h->left_samples_available&mask[i])){
91 int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
92 if(status<0){
93 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);
94 return -1;
95 } else if(status){
96 h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
97 }
98 }
99 }
100 }
101
102 return 0;
103 } //FIXME cleanup like ff_h264_check_intra_pred_mode
104
105 /**
106 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
107 */
108 int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
109 MpegEncContext * const s = &h->s;
110 static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
111 static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
112
113 if(mode > 6U) {
114 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);
115 return -1;
116 }
117
118 if(!(h->top_samples_available&0x8000)){
119 mode= top[ mode ];
120 if(mode<0){
121 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);
122 return -1;
123 }
124 }
125
126 if((h->left_samples_available&0x8080) != 0x8080){
127 mode= left[ mode ];
128 if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
129 mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
130 }
131 if(mode<0){
132 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);
133 return -1;
134 }
135 }
136
137 return mode;
138 }
139
140 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
141 int i, si, di;
142 uint8_t *dst;
143 int bufidx;
144
145 // src[0]&0x80; //forbidden bit
146 h->nal_ref_idc= src[0]>>5;
147 h->nal_unit_type= src[0]&0x1F;
148
149 src++; length--;
150 #if 0
151 for(i=0; i<length; i++)
152 printf("%2X ", src[i]);
153 #endif
154
155 #if HAVE_FAST_UNALIGNED
156 # if HAVE_FAST_64BIT
157 # define RS 7
158 for(i=0; i+1<length; i+=9){
159 if(!((~*(const uint64_t*)(src+i) & (*(const uint64_t*)(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
160 # else
161 # define RS 3
162 for(i=0; i+1<length; i+=5){
163 if(!((~*(const uint32_t*)(src+i) & (*(const uint32_t*)(src+i) - 0x01000101U)) & 0x80008080U))
164 # endif
165 continue;
166 if(i>0 && !src[i]) i--;
167 while(src[i]) i++;
168 #else
169 # define RS 0
170 for(i=0; i+1<length; i+=2){
171 if(src[i]) continue;
172 if(i>0 && src[i-1]==0) i--;
173 #endif
174 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
175 if(src[i+2]!=3){
176 /* startcode, so we must be past the end */
177 length=i;
178 }
179 break;
180 }
181 i-= RS;
182 }
183
184 if(i>=length-1){ //no escaped 0
185 *dst_length= length;
186 *consumed= length+1; //+1 for the header
187 return src;
188 }
189
190 bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
191 av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
192 dst= h->rbsp_buffer[bufidx];
193
194 if (dst == NULL){
195 return NULL;
196 }
197
198 //printf("decoding esc\n");
199 memcpy(dst, src, i);
200 si=di=i;
201 while(si+2<length){
202 //remove escapes (very rare 1:2^22)
203 if(src[si+2]>3){
204 dst[di++]= src[si++];
205 dst[di++]= src[si++];
206 }else if(src[si]==0 && src[si+1]==0){
207 if(src[si+2]==3){ //escape
208 dst[di++]= 0;
209 dst[di++]= 0;
210 si+=3;
211 continue;
212 }else //next start code
213 goto nsc;
214 }
215
216 dst[di++]= src[si++];
217 }
218 while(si<length)
219 dst[di++]= src[si++];
220 nsc:
221
222 memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
223
224 *dst_length= di;
225 *consumed= si + 1;//+1 for the header
226 //FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
227 return dst;
228 }
229
230 int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
231 int v= *src;
232 int r;
233
234 tprintf(h->s.avctx, "rbsp trailing %X\n", v);
235
236 for(r=1; r<9; r++){
237 if(v&1) return r;
238 v>>=1;
239 }
240 return 0;
241 }
242
243 /**
244 * IDCT transforms the 16 dc values and dequantizes them.
245 * @param qp quantization parameter
246 */
247 static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
248 #define stride 16
249 int i;
250 int temp[16]; //FIXME check if this is a good idea
251 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
252 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
253
254 //memset(block, 64, 2*256);
255 //return;
256 for(i=0; i<4; i++){
257 const int offset= y_offset[i];
258 const int z0= block[offset+stride*0] + block[offset+stride*4];
259 const int z1= block[offset+stride*0] - block[offset+stride*4];
260 const int z2= block[offset+stride*1] - block[offset+stride*5];
261 const int z3= block[offset+stride*1] + block[offset+stride*5];
262
263 temp[4*i+0]= z0+z3;
264 temp[4*i+1]= z1+z2;
265 temp[4*i+2]= z1-z2;
266 temp[4*i+3]= z0-z3;
267 }
268
269 for(i=0; i<4; i++){
270 const int offset= x_offset[i];
271 const int z0= temp[4*0+i] + temp[4*2+i];
272 const int z1= temp[4*0+i] - temp[4*2+i];
273 const int z2= temp[4*1+i] - temp[4*3+i];
274 const int z3= temp[4*1+i] + temp[4*3+i];
275
276 block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
277 block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
278 block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
279 block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
280 }
281 }
282
283 #if 0
284 /**
285 * DCT transforms the 16 dc values.
286 * @param qp quantization parameter ??? FIXME
287 */
288 static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
289 // const int qmul= dequant_coeff[qp][0];
290 int i;
291 int temp[16]; //FIXME check if this is a good idea
292 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
293 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
294
295 for(i=0; i<4; i++){
296 const int offset= y_offset[i];
297 const int z0= block[offset+stride*0] + block[offset+stride*4];
298 const int z1= block[offset+stride*0] - block[offset+stride*4];
299 const int z2= block[offset+stride*1] - block[offset+stride*5];
300 const int z3= block[offset+stride*1] + block[offset+stride*5];
301
302 temp[4*i+0]= z0+z3;
303 temp[4*i+1]= z1+z2;
304 temp[4*i+2]= z1-z2;
305 temp[4*i+3]= z0-z3;
306 }
307
308 for(i=0; i<4; i++){
309 const int offset= x_offset[i];
310 const int z0= temp[4*0+i] + temp[4*2+i];
311 const int z1= temp[4*0+i] - temp[4*2+i];
312 const int z2= temp[4*1+i] - temp[4*3+i];
313 const int z3= temp[4*1+i] + temp[4*3+i];
314
315 block[stride*0 +offset]= (z0 + z3)>>1;
316 block[stride*2 +offset]= (z1 + z2)>>1;
317 block[stride*8 +offset]= (z1 - z2)>>1;
318 block[stride*10+offset]= (z0 - z3)>>1;
319 }
320 }
321 #endif
322
323 #undef xStride
324 #undef stride
325
326 static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
327 const int stride= 16*2;
328 const int xStride= 16;
329 int a,b,c,d,e;
330
331 a= block[stride*0 + xStride*0];
332 b= block[stride*0 + xStride*1];
333 c= block[stride*1 + xStride*0];
334 d= block[stride*1 + xStride*1];
335
336 e= a-b;
337 a= a+b;
338 b= c-d;
339 c= c+d;
340
341 block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
342 block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
343 block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
344 block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
345 }
346
347 #if 0
348 static void chroma_dc_dct_c(DCTELEM *block){
349 const int stride= 16*2;
350 const int xStride= 16;
351 int a,b,c,d,e;
352
353 a= block[stride*0 + xStride*0];
354 b= block[stride*0 + xStride*1];
355 c= block[stride*1 + xStride*0];
356 d= block[stride*1 + xStride*1];
357
358 e= a-b;
359 a= a+b;
360 b= c-d;
361 c= c+d;
362
363 block[stride*0 + xStride*0]= (a+c);
364 block[stride*0 + xStride*1]= (e+b);
365 block[stride*1 + xStride*0]= (a-c);
366 block[stride*1 + xStride*1]= (e-b);
367 }
368 #endif
369
370 static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
371 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
372 int src_x_offset, int src_y_offset,
373 qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
374 MpegEncContext * const s = &h->s;
375 const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
376 int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
377 const int luma_xy= (mx&3) + ((my&3)<<2);
378 uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
379 uint8_t * src_cb, * src_cr;
380 int extra_width= h->emu_edge_width;
381 int extra_height= h->emu_edge_height;
382 int emu=0;
383 const int full_mx= mx>>2;
384 const int full_my= my>>2;
385 const int pic_width = 16*s->mb_width;
386 const int pic_height = 16*s->mb_height >> MB_FIELD;
387
388 if(mx&7) extra_width -= 3;
389 if(my&7) extra_height -= 3;
390
391 if( full_mx < 0-extra_width
392 || full_my < 0-extra_height
393 || full_mx + 16/*FIXME*/ > pic_width + extra_width
394 || full_my + 16/*FIXME*/ > pic_height + extra_height){
395 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);
396 src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
397 emu=1;
398 }
399
400 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
401 if(!square){
402 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
403 }
404
405 if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
406
407 if(MB_FIELD){
408 // chroma offset when predicting from a field of opposite parity
409 my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
410 emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
411 }
412 src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
413 src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
414
415 if(emu){
416 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);
417 src_cb= s->edge_emu_buffer;
418 }
419 chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
420
421 if(emu){
422 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);
423 src_cr= s->edge_emu_buffer;
424 }
425 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
426 }
427
428 static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
429 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
430 int x_offset, int y_offset,
431 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
432 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
433 int list0, int list1){
434 MpegEncContext * const s = &h->s;
435 qpel_mc_func *qpix_op= qpix_put;
436 h264_chroma_mc_func chroma_op= chroma_put;
437
438 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
439 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
440 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
441 x_offset += 8*s->mb_x;
442 y_offset += 8*(s->mb_y >> MB_FIELD);
443
444 if(list0){
445 Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
446 mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
447 dest_y, dest_cb, dest_cr, x_offset, y_offset,
448 qpix_op, chroma_op);
449
450 qpix_op= qpix_avg;
451 chroma_op= chroma_avg;
452 }
453
454 if(list1){
455 Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
456 mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
457 dest_y, dest_cb, dest_cr, x_offset, y_offset,
458 qpix_op, chroma_op);
459 }
460 }
461
462 static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
463 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
464 int x_offset, int y_offset,
465 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
466 h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
467 h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
468 int list0, int list1){
469 MpegEncContext * const s = &h->s;
470
471 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
472 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
473 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
474 x_offset += 8*s->mb_x;
475 y_offset += 8*(s->mb_y >> MB_FIELD);
476
477 if(list0 && list1){
478 /* don't optimize for luma-only case, since B-frames usually
479 * use implicit weights => chroma too. */
480 uint8_t *tmp_cb = s->obmc_scratchpad;
481 uint8_t *tmp_cr = s->obmc_scratchpad + 8;
482 uint8_t *tmp_y = s->obmc_scratchpad + 8*h->mb_uvlinesize;
483 int refn0 = h->ref_cache[0][ scan8[n] ];
484 int refn1 = h->ref_cache[1][ scan8[n] ];
485
486 mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
487 dest_y, dest_cb, dest_cr,
488 x_offset, y_offset, qpix_put, chroma_put);
489 mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
490 tmp_y, tmp_cb, tmp_cr,
491 x_offset, y_offset, qpix_put, chroma_put);
492
493 if(h->use_weight == 2){
494 int weight0 = h->implicit_weight[refn0][refn1];
495 int weight1 = 64 - weight0;
496 luma_weight_avg( dest_y, tmp_y, h-> mb_linesize, 5, weight0, weight1, 0);
497 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
498 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
499 }else{
500 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
501 h->luma_weight[0][refn0], h->luma_weight[1][refn1],
502 h->luma_offset[0][refn0] + h->luma_offset[1][refn1]);
503 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
504 h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0],
505 h->chroma_offset[0][refn0][0] + h->chroma_offset[1][refn1][0]);
506 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
507 h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1],
508 h->chroma_offset[0][refn0][1] + h->chroma_offset[1][refn1][1]);
509 }
510 }else{
511 int list = list1 ? 1 : 0;
512 int refn = h->ref_cache[list][ scan8[n] ];
513 Picture *ref= &h->ref_list[list][refn];
514 mc_dir_part(h, ref, n, square, chroma_height, delta, list,
515 dest_y, dest_cb, dest_cr, x_offset, y_offset,
516 qpix_put, chroma_put);
517
518 luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
519 h->luma_weight[list][refn], h->luma_offset[list][refn]);
520 if(h->use_weight_chroma){
521 chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
522 h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]);
523 chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
524 h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]);
525 }
526 }
527 }
528
529 static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
530 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
531 int x_offset, int y_offset,
532 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
533 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
534 h264_weight_func *weight_op, h264_biweight_func *weight_avg,
535 int list0, int list1){
536 if((h->use_weight==2 && list0 && list1
537 && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32))
538 || h->use_weight==1)
539 mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
540 x_offset, y_offset, qpix_put, chroma_put,
541 weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
542 else
543 mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
544 x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
545 }
546
547 static inline void prefetch_motion(H264Context *h, int list){
548 /* fetch pixels for estimated mv 4 macroblocks ahead
549 * optimized for 64byte cache lines */
550 MpegEncContext * const s = &h->s;
551 const int refn = h->ref_cache[list][scan8[0]];
552 if(refn >= 0){
553 const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
554 const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
555 uint8_t **src= h->ref_list[list][refn].data;
556 int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
557 s->dsp.prefetch(src[0]+off, s->linesize, 4);
558 off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
559 s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
560 }
561 }
562
563 static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
564 qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
565 qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
566 h264_weight_func *weight_op, h264_biweight_func *weight_avg){
567 MpegEncContext * const s = &h->s;
568 const int mb_xy= h->mb_xy;
569 const int mb_type= s->current_picture.mb_type[mb_xy];
570
571 assert(IS_INTER(mb_type));
572
573 prefetch_motion(h, 0);
574
575 if(IS_16X16(mb_type)){
576 mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
577 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
578 weight_op, weight_avg,
579 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
580 }else if(IS_16X8(mb_type)){
581 mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
582 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
583 &weight_op[1], &weight_avg[1],
584 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
585 mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
586 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
587 &weight_op[1], &weight_avg[1],
588 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
589 }else if(IS_8X16(mb_type)){
590 mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
591 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
592 &weight_op[2], &weight_avg[2],
593 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
594 mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
595 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
596 &weight_op[2], &weight_avg[2],
597 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
598 }else{
599 int i;
600
601 assert(IS_8X8(mb_type));
602
603 for(i=0; i<4; i++){
604 const int sub_mb_type= h->sub_mb_type[i];
605 const int n= 4*i;
606 int x_offset= (i&1)<<2;
607 int y_offset= (i&2)<<1;
608
609 if(IS_SUB_8X8(sub_mb_type)){
610 mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
611 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
612 &weight_op[3], &weight_avg[3],
613 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
614 }else if(IS_SUB_8X4(sub_mb_type)){
615 mc_part(h, n , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
616 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
617 &weight_op[4], &weight_avg[4],
618 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
619 mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
620 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
621 &weight_op[4], &weight_avg[4],
622 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
623 }else if(IS_SUB_4X8(sub_mb_type)){
624 mc_part(h, n , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
625 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
626 &weight_op[5], &weight_avg[5],
627 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
628 mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
629 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
630 &weight_op[5], &weight_avg[5],
631 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
632 }else{
633 int j;
634 assert(IS_SUB_4X4(sub_mb_type));
635 for(j=0; j<4; j++){
636 int sub_x_offset= x_offset + 2*(j&1);
637 int sub_y_offset= y_offset + (j&2);
638 mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
639 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
640 &weight_op[6], &weight_avg[6],
641 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
642 }
643 }
644 }
645 }
646
647 prefetch_motion(h, 1);
648 }
649
650
651 static void free_tables(H264Context *h){
652 int i;
653 H264Context *hx;
654 av_freep(&h->intra4x4_pred_mode);
655 av_freep(&h->chroma_pred_mode_table);
656 av_freep(&h->cbp_table);
657 av_freep(&h->mvd_table[0]);
658 av_freep(&h->mvd_table[1]);
659 av_freep(&h->direct_table);
660 av_freep(&h->non_zero_count);
661 av_freep(&h->slice_table_base);
662 h->slice_table= NULL;
663 av_freep(&h->list_counts);
664
665 av_freep(&h->mb2b_xy);
666 av_freep(&h->mb2b8_xy);
667
668 for(i = 0; i < MAX_THREADS; i++) {
669 hx = h->thread_context[i];
670 if(!hx) continue;
671 av_freep(&hx->top_borders[1]);
672 av_freep(&hx->top_borders[0]);
673 av_freep(&hx->s.obmc_scratchpad);
674 av_freep(&hx->rbsp_buffer[1]);
675 av_freep(&hx->rbsp_buffer[0]);
676 hx->rbsp_buffer_size[0] = 0;
677 hx->rbsp_buffer_size[1] = 0;
678 if (i) av_freep(&h->thread_context[i]);
679 }
680 }
681
682 static void init_dequant8_coeff_table(H264Context *h){
683 int i,q,x;
684 const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
685 h->dequant8_coeff[0] = h->dequant8_buffer[0];
686 h->dequant8_coeff[1] = h->dequant8_buffer[1];
687
688 for(i=0; i<2; i++ ){
689 if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
690 h->dequant8_coeff[1] = h->dequant8_buffer[0];
691 break;
692 }
693
694 for(q=0; q<52; q++){
695 int shift = div6[q];
696 int idx = rem6[q];
697 for(x=0; x<64; x++)
698 h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
699 ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
700 h->pps.scaling_matrix8[i][x]) << shift;
701 }
702 }
703 }
704
705 static void init_dequant4_coeff_table(H264Context *h){
706 int i,j,q,x;
707 const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
708 for(i=0; i<6; i++ ){
709 h->dequant4_coeff[i] = h->dequant4_buffer[i];
710 for(j=0; j<i; j++){
711 if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
712 h->dequant4_coeff[i] = h->dequant4_buffer[j];
713 break;
714 }
715 }
716 if(j<i)
717 continue;
718
719 for(q=0; q<52; q++){
720 int shift = div6[q] + 2;
721 int idx = rem6[q];
722 for(x=0; x<16; x++)
723 h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
724 ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
725 h->pps.scaling_matrix4[i][x]) << shift;
726 }
727 }
728 }
729
730 static void init_dequant_tables(H264Context *h){
731 int i,x;
732 init_dequant4_coeff_table(h);
733 if(h->pps.transform_8x8_mode)
734 init_dequant8_coeff_table(h);
735 if(h->sps.transform_bypass){
736 for(i=0; i<6; i++)
737 for(x=0; x<16; x++)
738 h->dequant4_coeff[i][0][x] = 1<<6;
739 if(h->pps.transform_8x8_mode)
740 for(i=0; i<2; i++)
741 for(x=0; x<64; x++)
742 h->dequant8_coeff[i][0][x] = 1<<6;
743 }
744 }
745
746
747 int ff_h264_alloc_tables(H264Context *h){
748 MpegEncContext * const s = &h->s;
749 const int big_mb_num= s->mb_stride * (s->mb_height+1);
750 int x,y;
751
752 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, big_mb_num * 8 * sizeof(uint8_t), fail)
753
754 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count , big_mb_num * 32 * sizeof(uint8_t), fail)
755 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail)
756 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail)
757
758 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail)
759 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t), fail);
760 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t), fail);
761 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 32*big_mb_num * sizeof(uint8_t) , fail);
762 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts, big_mb_num * sizeof(uint8_t), fail)
763
764 memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base));
765 h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
766
767 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy , big_mb_num * sizeof(uint32_t), fail);
768 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b8_xy , big_mb_num * sizeof(uint32_t), fail);
769 for(y=0; y<s->mb_height; y++){
770 for(x=0; x<s->mb_width; x++){
771 const int mb_xy= x + y*s->mb_stride;
772 const int b_xy = 4*x + 4*y*h->b_stride;
773 const int b8_xy= 2*x + 2*y*h->b8_stride;
774
775 h->mb2b_xy [mb_xy]= b_xy;
776 h->mb2b8_xy[mb_xy]= b8_xy;
777 }
778 }
779
780 s->obmc_scratchpad = NULL;
781
782 if(!h->dequant4_coeff[0])
783 init_dequant_tables(h);
784
785 return 0;
786 fail:
787 free_tables(h);
788 return -1;
789 }
790
791 /**
792 * Mimic alloc_tables(), but for every context thread.
793 */
794 static void clone_tables(H264Context *dst, H264Context *src){
795 dst->intra4x4_pred_mode = src->intra4x4_pred_mode;
796 dst->non_zero_count = src->non_zero_count;
797 dst->slice_table = src->slice_table;
798 dst->cbp_table = src->cbp_table;
799 dst->mb2b_xy = src->mb2b_xy;
800 dst->mb2b8_xy = src->mb2b8_xy;
801 dst->chroma_pred_mode_table = src->chroma_pred_mode_table;
802 dst->mvd_table[0] = src->mvd_table[0];
803 dst->mvd_table[1] = src->mvd_table[1];
804 dst->direct_table = src->direct_table;
805 dst->list_counts = src->list_counts;
806
807 dst->s.obmc_scratchpad = NULL;
808 ff_h264_pred_init(&dst->hpc, src->s.codec_id);
809 }
810
811 /**
812 * Init context
813 * Allocate buffers which are not shared amongst multiple threads.
814 */
815 static int context_init(H264Context *h){
816 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
817 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
818
819 return 0;
820 fail:
821 return -1; // free_tables will clean up for us
822 }
823
824 static av_cold void common_init(H264Context *h){
825 MpegEncContext * const s = &h->s;
826
827 s->width = s->avctx->width;
828 s->height = s->avctx->height;
829 s->codec_id= s->avctx->codec->id;
830
831 ff_h264_pred_init(&h->hpc, s->codec_id);
832
833 h->dequant_coeff_pps= -1;
834 s->unrestricted_mv=1;
835 s->decode=1; //FIXME
836
837 dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
838
839 memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
840 memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
841 }
842
843 av_cold int ff_h264_decode_init(AVCodecContext *avctx){
844 H264Context *h= avctx->priv_data;
845 MpegEncContext * const s = &h->s;
846
847 MPV_decode_defaults(s);
848
849 s->avctx = avctx;
850 common_init(h);
851
852 s->out_format = FMT_H264;
853 s->workaround_bugs= avctx->workaround_bugs;
854
855 // set defaults
856 // s->decode_mb= ff_h263_decode_mb;
857 s->quarter_sample = 1;
858 if(!avctx->has_b_frames)
859 s->low_delay= 1;
860
861 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
862
863 ff_h264_decode_init_vlc();
864
865 if(avctx->extradata_size > 0 && avctx->extradata &&
866 *(char *)avctx->extradata == 1){
867 h->is_avc = 1;
868 h->got_avcC = 0;
869 } else {
870 h->is_avc = 0;
871 }
872
873 h->thread_context[0] = h;
874 h->outputed_poc = INT_MIN;
875 h->prev_poc_msb= 1<<16;
876 h->x264_build = -1;
877 ff_h264_reset_sei(h);
878 if(avctx->codec_id == CODEC_ID_H264){
879 if(avctx->ticks_per_frame == 1){
880 s->avctx->time_base.den *=2;
881 }
882 avctx->ticks_per_frame = 2;
883 }
884 return 0;
885 }
886
887 int ff_h264_frame_start(H264Context *h){
888 MpegEncContext * const s = &h->s;
889 int i;
890
891 if(MPV_frame_start(s, s->avctx) < 0)
892 return -1;
893 ff_er_frame_start(s);
894 /*
895 * MPV_frame_start uses pict_type to derive key_frame.
896 * This is incorrect for H.264; IDR markings must be used.
897 * Zero here; IDR markings per slice in frame or fields are ORed in later.
898 * See decode_nal_units().
899 */
900 s->current_picture_ptr->key_frame= 0;
901 s->current_picture_ptr->mmco_reset= 0;
902
903 assert(s->linesize && s->uvlinesize);
904
905 for(i=0; i<16; i++){
906 h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
907 h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
908 }
909 for(i=0; i<4; i++){
910 h->block_offset[16+i]=
911 h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
912 h->block_offset[24+16+i]=
913 h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
914 }
915
916 /* can't be in alloc_tables because linesize isn't known there.
917 * FIXME: redo bipred weight to not require extra buffer? */
918 for(i = 0; i < s->avctx->thread_count; i++)
919 if(!h->thread_context[i]->s.obmc_scratchpad)
920 h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
921
922 /* some macroblocks will be accessed before they're available */
923 if(FRAME_MBAFF || s->avctx->thread_count > 1)
924 memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
925
926 // s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
927
928 // We mark the current picture as non-reference after allocating it, so
929 // that if we break out due to an error it can be released automatically
930 // in the next MPV_frame_start().
931 // SVQ3 as well as most other codecs have only last/next/current and thus
932 // get released even with set reference, besides SVQ3 and others do not
933 // mark frames as reference later "naturally".
934 if(s->codec_id != CODEC_ID_SVQ3)
935 s->current_picture_ptr->reference= 0;
936
937 s->current_picture_ptr->field_poc[0]=
938 s->current_picture_ptr->field_poc[1]= INT_MAX;
939 assert(s->current_picture_ptr->long_ref==0);
940
941 return 0;
942 }
943
944 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){
945 MpegEncContext * const s = &h->s;
946 uint8_t *top_border;
947 int top_idx = 1;
948
949 src_y -= linesize;
950 src_cb -= uvlinesize;
951 src_cr -= uvlinesize;
952
953 if(!simple && FRAME_MBAFF){
954 if(s->mb_y&1){
955 if(!MB_MBAFF){
956 top_border = h->top_borders[0][s->mb_x];
957 AV_COPY128(top_border, src_y + 15*linesize);
958 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
959 AV_COPY64(top_border+16, src_cb+7*uvlinesize);
960 AV_COPY64(top_border+24, src_cr+7*uvlinesize);
961 }
962 }
963 }else if(MB_MBAFF){
964 top_idx = 0;
965 }else
966 return;
967 }
968
969 top_border = h->top_borders[top_idx][s->mb_x];
970 // There are two lines saved, the line above the the top macroblock of a pair,
971 // and the line above the bottom macroblock
972 AV_COPY128(top_border, src_y + 16*linesize);
973
974 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
975 AV_COPY64(top_border+16, src_cb+8*uvlinesize);
976 AV_COPY64(top_border+24, src_cr+8*uvlinesize);
977 }
978 }
979
980 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){
981 MpegEncContext * const s = &h->s;
982 int deblock_left;
983 int deblock_top;
984 int mb_xy;
985 int top_idx = 1;
986 uint8_t *top_border_m1;
987 uint8_t *top_border;
988
989 if(!simple && FRAME_MBAFF){
990 if(s->mb_y&1){
991 if(!MB_MBAFF)
992 return;
993 }else{
994 top_idx = MB_MBAFF ? 0 : 1;
995 }
996 }
997
998 if(h->deblocking_filter == 2) {
999 deblock_left = h->left_type[0];
1000 deblock_top = h->top_type;
1001 } else {
1002 deblock_left = (s->mb_x > 0);
1003 deblock_top = (s->mb_y > !!MB_FIELD);
1004 }
1005
1006 src_y -= linesize + 1;
1007 src_cb -= uvlinesize + 1;
1008 src_cr -= uvlinesize + 1;
1009
1010 top_border_m1 = h->top_borders[top_idx][s->mb_x-1];
1011 top_border = h->top_borders[top_idx][s->mb_x];
1012
1013 #define XCHG(a,b,xchg)\
1014 if (xchg) AV_SWAP64(b,a);\
1015 else AV_COPY64(b,a);
1016
1017 if(deblock_top){
1018 if(deblock_left){
1019 XCHG(top_border_m1+8, src_y -7, 1);
1020 }
1021 XCHG(top_border+0, src_y +1, xchg);
1022 XCHG(top_border+8, src_y +9, 1);
1023 if(s->mb_x+1 < s->mb_width){
1024 XCHG(h->top_borders[top_idx][s->mb_x+1], src_y +17, 1);
1025 }
1026 }
1027
1028 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1029 if(deblock_top){
1030 if(deblock_left){
1031 XCHG(top_border_m1+16, src_cb -7, 1);
1032 XCHG(top_border_m1+24, src_cr -7, 1);
1033 }
1034 XCHG(top_border+16, src_cb+1, 1);
1035 XCHG(top_border+24, src_cr+1, 1);
1036 }
1037 }
1038 }
1039
1040 static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
1041 MpegEncContext * const s = &h->s;
1042 const int mb_x= s->mb_x;
1043 const int mb_y= s->mb_y;
1044 const int mb_xy= h->mb_xy;
1045 const int mb_type= s->current_picture.mb_type[mb_xy];
1046 uint8_t *dest_y, *dest_cb, *dest_cr;
1047 int linesize, uvlinesize /*dct_offset*/;
1048 int i;
1049 int *block_offset = &h->block_offset[0];
1050 const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
1051 /* is_h264 should always be true if SVQ3 is disabled. */
1052 const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
1053 void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1054 void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1055
1056 dest_y = s->current_picture.data[0] + (mb_x + mb_y * s->linesize ) * 16;
1057 dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
1058 dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
1059
1060 s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
1061 s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
1062
1063 h->list_counts[mb_xy]= h->list_count;
1064
1065 if (!simple && MB_FIELD) {
1066 linesize = h->mb_linesize = s->linesize * 2;
1067 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
1068 block_offset = &h->block_offset[24];
1069 if(mb_y&1){ //FIXME move out of this function?
1070 dest_y -= s->linesize*15;
1071 dest_cb-= s->uvlinesize*7;
1072 dest_cr-= s->uvlinesize*7;
1073 }
1074 if(FRAME_MBAFF) {
1075 int list;
1076 for(list=0; list<h->list_count; list++){
1077 if(!USES_LIST(mb_type, list))
1078 continue;
1079 if(IS_16X16(mb_type)){
1080 int8_t *ref = &h->ref_cache[list][scan8[0]];
1081 fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
1082 }else{
1083 for(i=0; i<16; i+=4){
1084 int ref = h->ref_cache[list][scan8[i]];
1085 if(ref >= 0)
1086 fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
1087 }
1088 }
1089 }
1090 }
1091 } else {
1092 linesize = h->mb_linesize = s->linesize;
1093 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
1094 // dct_offset = s->linesize * 16;
1095 }
1096
1097 if (!simple && IS_INTRA_PCM(mb_type)) {
1098 for (i=0; i<16; i++) {
1099 memcpy(dest_y + i* linesize, h->mb + i*8, 16);
1100 }
1101 for (i=0; i<8; i++) {
1102 memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4, 8);
1103 memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4, 8);
1104 }
1105 } else {
1106 if(IS_INTRA(mb_type)){
1107 if(h->deblocking_filter)
1108 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
1109
1110 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1111 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
1112 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
1113 }
1114
1115 if(IS_INTRA4x4(mb_type)){
1116 if(simple || !s->encoding){
1117 if(IS_8x8DCT(mb_type)){
1118 if(transform_bypass){
1119 idct_dc_add =
1120 idct_add = s->dsp.add_pixels8;
1121 }else{
1122 idct_dc_add = s->dsp.h264_idct8_dc_add;
1123 idct_add = s->dsp.h264_idct8_add;
1124 }
1125 for(i=0; i<16; i+=4){
1126 uint8_t * const ptr= dest_y + block_offset[i];
1127 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1128 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1129 h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
1130 }else{
1131 const int nnz = h->non_zero_count_cache[ scan8[i] ];
1132 h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
1133 (h->topright_samples_available<<i)&0x4000, linesize);
1134 if(nnz){
1135 if(nnz == 1 && h->mb[i*16])
1136 idct_dc_add(ptr, h->mb + i*16, linesize);
1137 else
1138 idct_add (ptr, h->mb + i*16, linesize);
1139 }
1140 }
1141 }
1142 }else{
1143 if(transform_bypass){
1144 idct_dc_add =
1145 idct_add = s->dsp.add_pixels4;
1146 }else{
1147 idct_dc_add = s->dsp.h264_idct_dc_add;
1148 idct_add = s->dsp.h264_idct_add;
1149 }
1150 for(i=0; i<16; i++){
1151 uint8_t * const ptr= dest_y + block_offset[i];
1152 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1153
1154 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1155 h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
1156 }else{
1157 uint8_t *topright;
1158 int nnz, tr;
1159 if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
1160 const int topright_avail= (h->topright_samples_available<<i)&0x8000;
1161 assert(mb_y || linesize <= block_offset[i]);
1162 if(!topright_avail){
1163 tr= ptr[3 - linesize]*0x01010101;
1164 topright= (uint8_t*) &tr;
1165 }else
1166 topright= ptr + 4 - linesize;
1167 }else
1168 topright= NULL;
1169
1170 h->hpc.pred4x4[ dir ](ptr, topright, linesize);
1171 nnz = h->non_zero_count_cache[ scan8[i] ];
1172 if(nnz){
1173 if(is_h264){
1174 if(nnz == 1 && h->mb[i*16])
1175 idct_dc_add(ptr, h->mb + i*16, linesize);
1176 else
1177 idct_add (ptr, h->mb + i*16, linesize);
1178 }else
1179 ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
1180 }
1181 }
1182 }
1183 }
1184 }
1185 }else{
1186 h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
1187 if(is_h264){
1188 if(!transform_bypass)
1189 h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
1190 }else
1191 ff_svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
1192 }
1193 if(h->deblocking_filter)
1194 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
1195 }else if(is_h264){
1196 hl_motion(h, dest_y, dest_cb, dest_cr,
1197 s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1198 s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1199 s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
1200 }
1201
1202
1203 if(!IS_INTRA4x4(mb_type)){
1204 if(is_h264){
1205 if(IS_INTRA16x16(mb_type)){
1206 if(transform_bypass){
1207 if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
1208 h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
1209 }else{
1210 for(i=0; i<16; i++){
1211 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1212 s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
1213 }
1214 }
1215 }else{
1216 s->dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1217 }
1218 }else if(h->cbp&15){
1219 if(transform_bypass){
1220 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1221 idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
1222 for(i=0; i<16; i+=di){
1223 if(h->non_zero_count_cache[ scan8[i] ]){
1224 idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
1225 }
1226 }
1227 }else{
1228 if(IS_8x8DCT(mb_type)){
1229 s->dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1230 }else{
1231 s->dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1232 }
1233 }
1234 }
1235 }else{
1236 for(i=0; i<16; i++){
1237 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
1238 uint8_t * const ptr= dest_y + block_offset[i];
1239 ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1240 }
1241 }
1242 }
1243 }
1244
1245 if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
1246 uint8_t *dest[2] = {dest_cb, dest_cr};
1247 if(transform_bypass){
1248 if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
1249 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
1250 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
1251 }else{
1252 idct_add = s->dsp.add_pixels4;
1253 for(i=16; i<16+8; i++){
1254 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1255 idct_add (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1256 }
1257 }
1258 }else{
1259 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]);
1260 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]);
1261 if(is_h264){
1262 idct_add = s->dsp.h264_idct_add;
1263 idct_dc_add = s->dsp.h264_idct_dc_add;
1264 for(i=16; i<16+8; i++){
1265 if(h->non_zero_count_cache[ scan8[i] ])
1266 idct_add (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1267 else if(h->mb[i*16])
1268 idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1269 }
1270 }else{
1271 for(i=16; i<16+8; i++){
1272 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
1273 uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
1274 ff_svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[s->qscale + 12] - 12, 2);
1275 }
1276 }
1277 }
1278 }
1279 }
1280 }
1281 if(h->cbp || IS_INTRA(mb_type))
1282 s->dsp.clear_blocks(h->mb);
1283 }
1284
1285 /**
1286 * Process a macroblock; this case avoids checks for expensive uncommon cases.
1287 */
1288 static void hl_decode_mb_simple(H264Context *h){
1289 hl_decode_mb_internal(h, 1);
1290 }
1291
1292 /**
1293 * Process a macroblock; this handles edge cases, such as interlacing.
1294 */
1295 static void av_noinline hl_decode_mb_complex(H264Context *h){
1296 hl_decode_mb_internal(h, 0);
1297 }
1298
1299 void ff_h264_hl_decode_mb(H264Context *h){
1300 MpegEncContext * const s = &h->s;
1301 const int mb_xy= h->mb_xy;
1302 const int mb_type= s->current_picture.mb_type[mb_xy];
1303 int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1304
1305 if (is_complex)
1306 hl_decode_mb_complex(h);
1307 else hl_decode_mb_simple(h);
1308 }
1309
1310 static int pred_weight_table(H264Context *h){
1311 MpegEncContext * const s = &h->s;
1312 int list, i;
1313 int luma_def, chroma_def;
1314
1315 h->use_weight= 0;
1316 h->use_weight_chroma= 0;
1317 h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
1318 h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
1319 luma_def = 1<<h->luma_log2_weight_denom;
1320 chroma_def = 1<<h->chroma_log2_weight_denom;
1321
1322 for(list=0; list<2; list++){
1323 h->luma_weight_flag[list] = 0;
1324 h->chroma_weight_flag[list] = 0;
1325 for(i=0; i<h->ref_count[list]; i++){
1326 int luma_weight_flag, chroma_weight_flag;
1327
1328 luma_weight_flag= get_bits1(&s->gb);
1329 if(luma_weight_flag){
1330 h->luma_weight[list][i]= get_se_golomb(&s->gb);
1331 h->luma_offset[list][i]= get_se_golomb(&s->gb);
1332 if( h->luma_weight[list][i] != luma_def
1333 || h->luma_offset[list][i] != 0) {
1334 h->use_weight= 1;
1335 h->luma_weight_flag[list]= 1;
1336 }
1337 }else{
1338 h->luma_weight[list][i]= luma_def;
1339 h->luma_offset[list][i]= 0;
1340 }
1341
1342 if(CHROMA){
1343 chroma_weight_flag= get_bits1(&s->gb);
1344 if(chroma_weight_flag){
1345 int j;
1346 for(j=0; j<2; j++){
1347 h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
1348 h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
1349 if( h->chroma_weight[list][i][j] != chroma_def
1350 || h->chroma_offset[list][i][j] != 0) {
1351 h->use_weight_chroma= 1;
1352 h->chroma_weight_flag[list]= 1;
1353 }
1354 }
1355 }else{
1356 int j;
1357 for(j=0; j<2; j++){
1358 h->chroma_weight[list][i][j]= chroma_def;
1359 h->chroma_offset[list][i][j]= 0;
1360 }
1361 }
1362 }
1363 }
1364 if(h->slice_type_nos != FF_B_TYPE) break;
1365 }
1366 h->use_weight= h->use_weight || h->use_weight_chroma;
1367 return 0;
1368 }
1369
1370 static void implicit_weight_table(H264Context *h){
1371 MpegEncContext * const s = &h->s;
1372 int ref0, ref1, i;
1373 int cur_poc = s->current_picture_ptr->poc;
1374
1375 for (i = 0; i < 2; i++) {
1376 h->luma_weight_flag[i] = 0;
1377 h->chroma_weight_flag[i] = 0;
1378 }
1379
1380 if( h->ref_count[0] == 1 && h->ref_count[1] == 1
1381 && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
1382 h->use_weight= 0;
1383 h->use_weight_chroma= 0;
1384 return;
1385 }
1386
1387 h->use_weight= 2;
1388 h->use_weight_chroma= 2;
1389 h->luma_log2_weight_denom= 5;
1390 h->chroma_log2_weight_denom= 5;
1391
1392 for(ref0=0; ref0 < h->ref_count[0]; ref0++){
1393 int poc0 = h->ref_list[0][ref0].poc;
1394 for(ref1=0; ref1 < h->ref_count[1]; ref1++){
1395 int poc1 = h->ref_list[1][ref1].poc;
1396 int td = av_clip(poc1 - poc0, -128, 127);
1397 if(td){
1398 int tb = av_clip(cur_poc - poc0, -128, 127);
1399 int tx = (16384 + (FFABS(td) >> 1)) / td;
1400 int dist_scale_factor = av_clip((tb*tx + 32) >> 6, -1024, 1023) >> 2;
1401 if(dist_scale_factor < -64 || dist_scale_factor > 128)
1402 h->implicit_weight[ref0][ref1] = 32;
1403 else
1404 h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor;
1405 }else
1406 h->implicit_weight[ref0][ref1] = 32;
1407 }
1408 }
1409 }
1410
1411 /**
1412 * instantaneous decoder refresh.
1413 */
1414 static void idr(H264Context *h){
1415 ff_h264_remove_all_refs(h);
1416 h->prev_frame_num= 0;
1417 h->prev_frame_num_offset= 0;
1418 h->prev_poc_msb=
1419 h->prev_poc_lsb= 0;
1420 }
1421
1422 /* forget old pics after a seek */
1423 static void flush_dpb(AVCodecContext *avctx){
1424 H264Context *h= avctx->priv_data;
1425 int i;
1426 for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
1427 if(h->delayed_pic[i])
1428 h->delayed_pic[i]->reference= 0;
1429 h->delayed_pic[i]= NULL;
1430 }
1431 h->outputed_poc= INT_MIN;
1432 h->prev_interlaced_frame = 1;
1433 idr(h);
1434 if(h->s.current_picture_ptr)
1435 h->s.current_picture_ptr->reference= 0;
1436 h->s.first_field= 0;
1437 ff_h264_reset_sei(h);
1438 ff_mpeg_flush(avctx);
1439 }
1440
1441 static int init_poc(H264Context *h){
1442 MpegEncContext * const s = &h->s;
1443 const int max_frame_num= 1<<h->sps.log2_max_frame_num;
1444 int field_poc[2];
1445 Picture *cur = s->current_picture_ptr;
1446
1447 h->frame_num_offset= h->prev_frame_num_offset;
1448 if(h->frame_num < h->prev_frame_num)
1449 h->frame_num_offset += max_frame_num;
1450
1451 if(h->sps.poc_type==0){
1452 const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
1453
1454 if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
1455 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
1456 else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
1457 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
1458 else
1459 h->poc_msb = h->prev_poc_msb;
1460 //printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
1461 field_poc[0] =
1462 field_poc[1] = h->poc_msb + h->poc_lsb;
1463 if(s->picture_structure == PICT_FRAME)
1464 field_poc[1] += h->delta_poc_bottom;
1465 }else if(h->sps.poc_type==1){
1466 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
1467 int i;
1468
1469 if(h->sps.poc_cycle_length != 0)
1470 abs_frame_num = h->frame_num_offset + h->frame_num;
1471 else
1472 abs_frame_num = 0;
1473
1474 if(h->nal_ref_idc==0 && abs_frame_num > 0)
1475 abs_frame_num--;
1476
1477 expected_delta_per_poc_cycle = 0;
1478 for(i=0; i < h->sps.poc_cycle_length; i++)
1479 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
1480
1481 if(abs_frame_num > 0){
1482 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
1483 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
1484
1485 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
1486 for(i = 0; i <= frame_num_in_poc_cycle; i++)
1487 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
1488 } else
1489 expectedpoc = 0;
1490
1491 if(h->nal_ref_idc == 0)
1492 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
1493
1494 field_poc[0] = expectedpoc + h->delta_poc[0];
1495 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
1496
1497 if(s->picture_structure == PICT_FRAME)
1498 field_poc[1] += h->delta_poc[1];
1499 }else{
1500 int poc= 2*(h->frame_num_offset + h->frame_num);
1501
1502 if(!h->nal_ref_idc)
1503 poc--;
1504
1505 field_poc[0]= poc;
1506 field_poc[1]= poc;
1507 }
1508
1509 if(s->picture_structure != PICT_BOTTOM_FIELD)
1510 s->current_picture_ptr->field_poc[0]= field_poc[0];
1511 if(s->picture_structure != PICT_TOP_FIELD)
1512 s->current_picture_ptr->field_poc[1]= field_poc[1];
1513 cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
1514
1515 return 0;
1516 }
1517
1518
1519 /**
1520 * initialize scan tables
1521 */
1522 static void init_scan_tables(H264Context *h){
1523 MpegEncContext * const s = &h->s;
1524 int i;
1525 if(s->dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
1526 memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
1527 memcpy(h-> field_scan, field_scan, 16*sizeof(uint8_t));
1528 }else{
1529 for(i=0; i<16; i++){
1530 #define T(x) (x>>2) | ((x<<2) & 0xF)
1531 h->zigzag_scan[i] = T(zigzag_scan[i]);
1532 h-> field_scan[i] = T( field_scan[i]);
1533 #undef T
1534 }
1535 }
1536 if(s->dsp.h264_idct8_add == ff_h264_idct8_add_c){
1537 memcpy(h->zigzag_scan8x8, ff_zigzag_direct, 64*sizeof(uint8_t));
1538 memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
1539 memcpy(h->field_scan8x8, field_scan8x8, 64*sizeof(uint8_t));
1540 memcpy(h->field_scan8x8_cavlc, field_scan8x8_cavlc, 64*sizeof(uint8_t));
1541 }else{
1542 for(i=0; i<64; i++){
1543 #define T(x) (x>>3) | ((x&7)<<3)
1544 h->zigzag_scan8x8[i] = T(ff_zigzag_direct[i]);
1545 h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
1546 h->field_scan8x8[i] = T(field_scan8x8[i]);
1547 h->field_scan8x8_cavlc[i] = T(field_scan8x8_cavlc[i]);
1548 #undef T
1549 }
1550 }
1551 if(h->sps.transform_bypass){ //FIXME same ugly
1552 h->zigzag_scan_q0 = zigzag_scan;
1553 h->zigzag_scan8x8_q0 = ff_zigzag_direct;
1554 h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
1555 h->field_scan_q0 = field_scan;
1556 h->field_scan8x8_q0 = field_scan8x8;
1557 h->field_scan8x8_cavlc_q0 = field_scan8x8_cavlc;
1558 }else{
1559 h->zigzag_scan_q0 = h->zigzag_scan;
1560 h->zigzag_scan8x8_q0 = h->zigzag_scan8x8;
1561 h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
1562 h->field_scan_q0 = h->field_scan;
1563 h->field_scan8x8_q0 = h->field_scan8x8;
1564 h->field_scan8x8_cavlc_q0 = h->field_scan8x8_cavlc;
1565 }
1566 }
1567
1568 static void field_end(H264Context *h){
1569 MpegEncContext * const s = &h->s;
1570 AVCodecContext * const avctx= s->avctx;
1571 s->mb_y= 0;
1572
1573 s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
1574 s->current_picture_ptr->pict_type= s->pict_type;
1575
1576 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1577 ff_vdpau_h264_set_reference_frames(s);
1578
1579 if(!s->dropable) {
1580 ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1581 h->prev_poc_msb= h->poc_msb;
1582 h->prev_poc_lsb= h->poc_lsb;
1583 }
1584 h->prev_frame_num_offset= h->frame_num_offset;
1585 h->prev_frame_num= h->frame_num;
1586
1587 if (avctx->hwaccel) {
1588 if (avctx->hwaccel->end_frame(avctx) < 0)
1589 av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
1590 }
1591
1592 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1593 ff_vdpau_h264_picture_complete(s);
1594
1595 /*
1596 * FIXME: Error handling code does not seem to support interlaced
1597 * when slices span multiple rows
1598 * The ff_er_add_slice calls don't work right for bottom
1599 * fields; they cause massive erroneous error concealing
1600 * Error marking covers both fields (top and bottom).
1601 * This causes a mismatched s->error_count
1602 * and a bad error table. Further, the error count goes to
1603 * INT_MAX when called for bottom field, because mb_y is
1604 * past end by one (callers fault) and resync_mb_y != 0
1605 * causes problems for the first MB line, too.
1606 */
1607 if (!FIELD_PICTURE)
1608 ff_er_frame_end(s);
1609
1610 MPV_frame_end(s);
1611
1612 h->current_slice=0;
1613 }
1614
1615 /**
1616 * Replicates H264 "master" context to thread contexts.
1617 */
1618 static void clone_slice(H264Context *dst, H264Context *src)
1619 {
1620 memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset));
1621 dst->s.current_picture_ptr = src->s.current_picture_ptr;
1622 dst->s.current_picture = src->s.current_picture;
1623 dst->s.linesize = src->s.linesize;
1624 dst->s.uvlinesize = src->s.uvlinesize;
1625 dst->s.first_field = src->s.first_field;
1626
1627 dst->prev_poc_msb = src->prev_poc_msb;
1628 dst->prev_poc_lsb = src->prev_poc_lsb;
1629 dst->prev_frame_num_offset = src->prev_frame_num_offset;
1630 dst->prev_frame_num = src->prev_frame_num;
1631 dst->short_ref_count = src->short_ref_count;
1632
1633 memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref));
1634 memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref));
1635 memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
1636 memcpy(dst->ref_list, src->ref_list, sizeof(dst->ref_list));
1637
1638 memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff));
1639 memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff));
1640 }
1641
1642 /**
1643 * decodes a slice header.
1644 * This will also call MPV_common_init() and frame_start() as needed.
1645 *
1646 * @param h h264context
1647 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
1648 *
1649 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
1650 */
1651 static int decode_slice_header(H264Context *h, H264Context *h0){
1652 MpegEncContext * const s = &h->s;
1653 MpegEncContext * const s0 = &h0->s;
1654 unsigned int first_mb_in_slice;
1655 unsigned int pps_id;
1656 int num_ref_idx_active_override_flag;
1657 unsigned int slice_type, tmp, i, j;
1658 int default_ref_list_done = 0;
1659 int last_pic_structure;
1660
1661 s->dropable= h->nal_ref_idc == 0;
1662
1663 if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
1664 s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
1665 s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
1666 }else{
1667 s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
1668 s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
1669 }
1670
1671 first_mb_in_slice= get_ue_golomb(&s->gb);
1672
1673 if(first_mb_in_slice == 0){ //FIXME better field boundary detection
1674 if(h0->current_slice && FIELD_PICTURE){
1675 field_end(h);
1676 }
1677
1678 h0->current_slice = 0;
1679 if (!s0->first_field)
1680 s->current_picture_ptr= NULL;
1681 }
1682
1683 slice_type= get_ue_golomb_31(&s->gb);
1684 if(slice_type > 9){
1685 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);
1686 return -1;
1687 }
1688 if(slice_type > 4){
1689 slice_type -= 5;
1690 h->slice_type_fixed=1;
1691 }else
1692 h->slice_type_fixed=0;
1693
1694 slice_type= golomb_to_pict_type[ slice_type ];
1695 if (slice_type == FF_I_TYPE
1696 || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
1697 default_ref_list_done = 1;
1698 }
1699 h->slice_type= slice_type;
1700 h->slice_type_nos= slice_type & 3;
1701
1702 s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
1703
1704 pps_id= get_ue_golomb(&s->gb);
1705 if(pps_id>=MAX_PPS_COUNT){
1706 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
1707 return -1;
1708 }
1709 if(!h0->pps_buffers[pps_id]) {
1710 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
1711 return -1;
1712 }
1713 h->pps= *h0->pps_buffers[pps_id];
1714
1715 if(!h0->sps_buffers[h->pps.sps_id]) {
1716 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
1717 return -1;
1718 }
1719 h->sps = *h0->sps_buffers[h->pps.sps_id];
1720
1721 if(h == h0 && h->dequant_coeff_pps != pps_id){
1722 h->dequant_coeff_pps = pps_id;
1723 init_dequant_tables(h);
1724 }
1725
1726 s->mb_width= h->sps.mb_width;
1727 s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
1728
1729 h->b_stride= s->mb_width*4;
1730 h->b8_stride= s->mb_width*2;
1731
1732 s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
1733 if(h->sps.frame_mbs_only_flag)
1734 s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
1735 else
1736 s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
1737
1738 if (s->context_initialized
1739 && ( s->width != s->avctx->width || s->height != s->avctx->height)) {
1740 if(h != h0)
1741 return -1; // width / height changed during parallelized decoding
1742 free_tables(h);
1743 flush_dpb(s->avctx);
1744 MPV_common_end(s);
1745 }
1746 if (!s->context_initialized) {
1747 if(h != h0)
1748 return -1; // we cant (re-)initialize context during parallel decoding
1749
1750 avcodec_set_dimensions(s->avctx, s->width, s->height);
1751 s->avctx->sample_aspect_ratio= h->sps.sar;
1752 if(!s->avctx->sample_aspect_ratio.den)
1753 s->avctx->sample_aspect_ratio.den = 1;
1754
1755 if(h->sps.video_signal_type_present_flag){
1756 s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
1757 if(h->sps.colour_description_present_flag){
1758 s->avctx->color_primaries = h->sps.color_primaries;
1759 s->avctx->color_trc = h->sps.color_trc;
1760 s->avctx->colorspace = h->sps.colorspace;
1761 }
1762 }
1763
1764 if(h->sps.timing_info_present_flag){
1765 int64_t den= h->sps.time_scale;
1766 if(h->x264_build < 44U)
1767 den *= 2;
1768 av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
1769 h->sps.num_units_in_tick, den, 1<<30);
1770 }
1771 s->avctx->pix_fmt = s->avctx->get_format(s->avctx, s->avctx->codec->pix_fmts);
1772 s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
1773
1774 if (MPV_common_init(s) < 0)
1775 return -1;
1776 s->first_field = 0;
1777 h->prev_interlaced_frame = 1;
1778
1779 init_scan_tables(h);
1780 ff_h264_alloc_tables(h);
1781
1782 for(i = 1; i < s->avctx->thread_count; i++) {
1783 H264Context *c;
1784 c = h->thread_context[i] = av_malloc(sizeof(H264Context));
1785 memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
1786 memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
1787 c->sps = h->sps;
1788 c->pps = h->pps;
1789 init_scan_tables(c);
1790 clone_tables(c, h);
1791 }
1792
1793 for(i = 0; i < s->avctx->thread_count; i++)
1794 if(context_init(h->thread_context[i]) < 0)
1795 return -1;
1796 }
1797
1798 h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
1799
1800 h->mb_mbaff = 0;
1801 h->mb_aff_frame = 0;
1802 last_pic_structure = s0->picture_structure;
1803 if(h->sps.frame_mbs_only_flag){
1804 s->picture_structure= PICT_FRAME;
1805 }else{
1806 if(get_bits1(&s->gb)) { //field_pic_flag
1807 s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
1808 } else {
1809 s->picture_structure= PICT_FRAME;
1810 h->mb_aff_frame = h->sps.mb_aff;
1811 }
1812 }
1813 h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
1814
1815 if(h0->current_slice == 0){
1816 while(h->frame_num != h->prev_frame_num &&
1817 h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
1818 av_log(NULL, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
1819 if (ff_h264_frame_start(h) < 0)
1820 return -1;
1821 h->prev_frame_num++;
1822 h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
1823 s->current_picture_ptr->frame_num= h->prev_frame_num;
1824 ff_h264_execute_ref_pic_marking(h, NULL, 0);
1825 }
1826
1827 /* See if we have a decoded first field looking for a pair... */
1828 if (s0->first_field) {
1829 assert(s0->current_picture_ptr);
1830 assert(s0->current_picture_ptr->data[0]);
1831 assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
1832
1833 /* figure out if we have a complementary field pair */
1834 if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
1835 /*
1836 * Previous field is unmatched. Don't display it, but let it
1837 * remain for reference if marked as such.
1838 */
1839 s0->current_picture_ptr = NULL;
1840 s0->first_field = FIELD_PICTURE;
1841
1842 } else {
1843 if (h->nal_ref_idc &&
1844 s0->current_picture_ptr->reference &&
1845 s0->current_picture_ptr->frame_num != h->frame_num) {
1846 /*
1847 * This and previous field were reference, but had
1848 * different frame_nums. Consider this field first in
1849 * pair. Throw away previous field except for reference
1850 * purposes.
1851 */
1852 s0->first_field = 1;
1853 s0->current_picture_ptr = NULL;
1854
1855 } else {
1856 /* Second field in complementary pair */
1857 s0->first_field = 0;
1858 }
1859 }
1860
1861 } else {
1862 /* Frame or first field in a potentially complementary pair */
1863 assert(!s0->current_picture_ptr);
1864 s0->first_field = FIELD_PICTURE;
1865 }
1866
1867 if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) {
1868 s0->first_field = 0;
1869 return -1;
1870 }
1871 }
1872 if(h != h0)
1873 clone_slice(h, h0);
1874
1875 s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
1876
1877 assert(s->mb_num == s->mb_width * s->mb_height);
1878 if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
1879 first_mb_in_slice >= s->mb_num){
1880 av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1881 return -1;
1882 }
1883 s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
1884 s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
1885 if (s->picture_structure == PICT_BOTTOM_FIELD)
1886 s->resync_mb_y = s->mb_y = s->mb_y + 1;
1887 assert(s->mb_y < s->mb_height);
1888
1889 if(s->picture_structure==PICT_FRAME){
1890 h->curr_pic_num= h->frame_num;
1891 h->max_pic_num= 1<< h->sps.log2_max_frame_num;
1892 }else{
1893 h->curr_pic_num= 2*h->frame_num + 1;
1894 h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
1895 }
1896
1897 if(h->nal_unit_type == NAL_IDR_SLICE){
1898 get_ue_golomb(&s->gb); /* idr_pic_id */
1899 }
1900
1901 if(h->sps.poc_type==0){
1902 h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
1903
1904 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
1905 h->delta_poc_bottom= get_se_golomb(&s->gb);
1906 }
1907 }
1908
1909 if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
1910 h->delta_poc[0]= get_se_golomb(&s->gb);
1911
1912 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
1913 h->delta_poc[1]= get_se_golomb(&s->gb);
1914 }
1915
1916 init_poc(h);
1917
1918 if(h->pps.redundant_pic_cnt_present){
1919 h->redundant_pic_count= get_ue_golomb(&s->gb);
1920 }
1921
1922 //set defaults, might be overridden a few lines later
1923 h->ref_count[0]= h->pps.ref_count[0];
1924 h->ref_count[1]= h->pps.ref_count[1];
1925
1926 if(h->slice_type_nos != FF_I_TYPE){
1927 if(h->slice_type_nos == FF_B_TYPE){
1928 h->direct_spatial_mv_pred= get_bits1(&s->gb);
1929 }
1930 num_ref_idx_active_override_flag= get_bits1(&s->gb);
1931
1932 if(num_ref_idx_active_override_flag){
1933 h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
1934 if(h->slice_type_nos==FF_B_TYPE)
1935 h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
1936
1937 if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
1938 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
1939 h->ref_count[0]= h->ref_count[1]= 1;
1940 return -1;
1941 }
1942 }
1943 if(h->slice_type_nos == FF_B_TYPE)
1944 h->list_count= 2;
1945 else
1946 h->list_count= 1;
1947 }else
1948 h->list_count= 0;
1949
1950 if(!default_ref_list_done){
1951 ff_h264_fill_default_ref_list(h);
1952 }
1953
1954 if(h->slice_type_nos!=FF_I_TYPE && ff_h264_decode_ref_pic_list_reordering(h) < 0)
1955 return -1;
1956
1957 if(h->slice_type_nos!=FF_I_TYPE){
1958 s->last_picture_ptr= &h->ref_list[0][0];
1959 ff_copy_picture(&s->last_picture, s->last_picture_ptr);
1960 }
1961 if(h->slice_type_nos==FF_B_TYPE){
1962 s->next_picture_ptr= &h->ref_list[1][0];
1963 ff_copy_picture(&s->next_picture, s->next_picture_ptr);
1964 }
1965
1966 if( (h->pps.weighted_pred && h->slice_type_nos == FF_P_TYPE )
1967 || (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
1968 pred_weight_table(h);
1969 else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE)
1970 implicit_weight_table(h);
1971 else {
1972 h->use_weight = 0;
1973 for (i = 0; i < 2; i++) {
1974 h->luma_weight_flag[i] = 0;
1975 h->chroma_weight_flag[i] = 0;
1976 }
1977 }
1978
1979 if(h->nal_ref_idc)
1980 ff_h264_decode_ref_pic_marking(h0, &s->gb);
1981
1982 if(FRAME_MBAFF)
1983 ff_h264_fill_mbaff_ref_list(h);
1984
1985 if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
1986 ff_h264_direct_dist_scale_factor(h);
1987 ff_h264_direct_ref_list_init(h);
1988
1989 if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
1990 tmp = get_ue_golomb_31(&s->gb);
1991 if(tmp > 2){
1992 av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
1993 return -1;
1994 }
1995 h->cabac_init_idc= tmp;
1996 }
1997
1998 h->last_qscale_diff = 0;
1999 tmp = h->pps.init_qp + get_se_golomb(&s->gb);
2000 if(tmp>51){
2001 av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
2002 return -1;
2003 }
2004 s->qscale= tmp;
2005 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2006 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2007 //FIXME qscale / qp ... stuff
2008 if(h->slice_type == FF_SP_TYPE){
2009 get_bits1(&s->gb); /* sp_for_switch_flag */
2010 }
2011 if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
2012 get_se_golomb(&s->gb); /* slice_qs_delta */
2013 }
2014
2015 h->deblocking_filter = 1;
2016 h->slice_alpha_c0_offset = 52;
2017 h->slice_beta_offset = 52;
2018 if( h->pps.deblocking_filter_parameters_present ) {
2019 tmp= get_ue_golomb_31(&s->gb);
2020 if(tmp > 2){
2021 av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
2022 return -1;
2023 }
2024 h->deblocking_filter= tmp;
2025 if(h->deblocking_filter < 2)
2026 h->deblocking_filter^= 1; // 1<->0
2027
2028 if( h->deblocking_filter ) {
2029 h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
2030 h->slice_beta_offset += get_se_golomb(&s->gb) << 1;
2031 if( h->slice_alpha_c0_offset > 104U
2032 || h->slice_beta_offset > 104U){
2033 av_log(s->avctx, AV_LOG_ERROR, "deblocking filter parameters %d %d out of range\n", h->slice_alpha_c0_offset, h->slice_beta_offset);
2034 return -1;
2035 }
2036 }
2037 }
2038
2039 if( s->avctx->skip_loop_filter >= AVDISCARD_ALL
2040 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
2041 ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR && h->slice_type_nos == FF_B_TYPE)
2042 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2043 h->deblocking_filter= 0;
2044
2045 if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
2046 if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
2047 /* Cheat slightly for speed:
2048 Do not bother to deblock across slices. */
2049 h->deblocking_filter = 2;
2050 } else {
2051 h0->max_contexts = 1;
2052 if(!h0->single_decode_warning) {
2053 av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
2054 h0->single_decode_warning = 1;
2055 }
2056 if(h != h0)
2057 return 1; // deblocking switched inside frame
2058 }
2059 }
2060 h->qp_thresh= 15 + 52 - FFMIN(h->slice_alpha_c0_offset, h->slice_beta_offset) - FFMAX3(0, h->pps.chroma_qp_index_offset[0], h->pps.chroma_qp_index_offset[1]);
2061
2062 #if 0 //FMO
2063 if( h->pps.num_slice_groups > 1 && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
2064 slice_group_change_cycle= get_bits(&s->gb, ?);
2065 #endif
2066
2067 h0->last_slice_type = slice_type;
2068 h->slice_num = ++h0->current_slice;
2069 if(h->slice_num >= MAX_SLICES){
2070 av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
2071 }
2072
2073 for(j=0; j<2; j++){
2074 int id_list[16];
2075 int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
2076 for(i=0; i<16; i++){
2077 id_list[i]= 60;
2078 if(h->ref_list[j][i].data[0]){
2079 int k;
2080 uint8_t *base= h->ref_list[j][i].base[0];
2081 for(k=0; k<h->short_ref_count; k++)
2082 if(h->short_ref[k]->base[0] == base){
2083 id_list[i]= k;
2084 break;
2085 }
2086 for(k=0; k<h->long_ref_count; k++)
2087 if(h->long_ref[k] && h->long_ref[k]->base[0] == base){
2088 id_list[i]= h->short_ref_count + k;
2089 break;
2090 }
2091 }
2092 }
2093
2094 ref2frm[0]=
2095 ref2frm[1]= -1;
2096 for(i=0; i<16; i++)
2097 ref2frm[i+2]= 4*id_list[i]
2098 +(h->ref_list[j][i].reference&3);
2099 ref2frm[18+0]=
2100 ref2frm[18+1]= -1;
2101 for(i=16; i<48; i++)
2102 ref2frm[i+4]= 4*id_list[(i-16)>>1]
2103 +(h->ref_list[j][i].reference&3);
2104 }
2105
2106 h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
2107 h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
2108
2109 s->avctx->refs= h->sps.ref_frame_count;
2110
2111 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
2112 av_log(h->s.avctx, AV_LOG_DEBUG, "slice:%d %s mb:%d %c%s%s pps:%u frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d:%d:%d weight:%d%s %s\n",
2113 h->slice_num,
2114 (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
2115 first_mb_in_slice,
2116 av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
2117 pps_id, h->frame_num,
2118 s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
2119 h->ref_count[0], h->ref_count[1],
2120 s->qscale,
2121 h->deblocking_filter, h->slice_alpha_c0_offset/2-26, h->slice_beta_offset/2-26,
2122 h->use_weight,
2123 h->use_weight==1 && h->use_weight_chroma ? "c" : "",
2124 h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
2125 );
2126 }
2127
2128 return 0;
2129 }
2130
2131 int ff_h264_get_slice_type(const H264Context *h)
2132 {
2133 switch (h->slice_type) {
2134 case FF_P_TYPE: return 0;
2135 case FF_B_TYPE: return 1;
2136 case FF_I_TYPE: return 2;
2137 case FF_SP_TYPE: return 3;
2138 case FF_SI_TYPE: return 4;
2139 default: return -1;
2140 }
2141 }
2142
2143 static void loop_filter(H264Context *h){
2144 MpegEncContext * const s = &h->s;
2145 uint8_t *dest_y, *dest_cb, *dest_cr;
2146 int linesize, uvlinesize, mb_x, mb_y;
2147 const int end_mb_y= s->mb_y + FRAME_MBAFF;
2148 const int old_slice_type= h->slice_type;
2149
2150 if(h->deblocking_filter) {
2151 for(mb_x= 0; mb_x<s->mb_width; mb_x++){
2152 for(mb_y=end_mb_y - FRAME_MBAFF; mb_y<= end_mb_y; mb_y++){
2153 int mb_xy, mb_type;
2154 mb_xy = h->mb_xy = mb_x + mb_y*s->mb_stride;
2155 h->slice_num= h->slice_table[mb_xy];
2156 mb_type= s->current_picture.mb_type[mb_xy];
2157 h->list_count= h->list_counts[mb_xy];
2158
2159 if(FRAME_MBAFF)
2160 h->mb_mbaff = h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2161
2162 s->mb_x= mb_x;
2163 s->mb_y= mb_y;
2164 dest_y = s->current_picture.data[0] + (mb_x + mb_y * s->linesize ) * 16;
2165 dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
2166 dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
2167 //FIXME simplify above
2168
2169 if (MB_FIELD) {
2170 linesize = h->mb_linesize = s->linesize * 2;
2171 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2172 if(mb_y&1){ //FIXME move out of this function?
2173 dest_y -= s->linesize*15;
2174 dest_cb-= s->uvlinesize*7;
2175 dest_cr-= s->uvlinesize*7;
2176 }
2177 } else {
2178 linesize = h->mb_linesize = s->linesize;
2179 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2180 }
2181 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0);
2182 if(fill_filter_caches(h, mb_type))
2183 continue;
2184 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2185 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2186
2187 if (FRAME_MBAFF) {
2188 ff_h264_filter_mb (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2189 } else {
2190 ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2191 }
2192 }
2193 }
2194 }
2195 h->slice_type= old_slice_type;
2196 s->mb_x= 0;
2197 s->mb_y= end_mb_y - FRAME_MBAFF;
2198 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2199 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2200 }
2201
2202 static void predict_field_decoding_flag(H264Context *h){
2203 MpegEncContext * const s = &h->s;
2204 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2205 int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
2206 ? s->current_picture.mb_type[mb_xy-1]
2207 : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
2208 ? s->current_picture.mb_type[mb_xy-s->mb_stride]
2209 : 0;
2210 h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2211 }
2212
2213 static int decode_slice(struct AVCodecContext *avctx, void *arg){
2214 H264Context *h = *(void**)arg;
2215 MpegEncContext * const s = &h->s;
2216 const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
2217
2218 s->mb_skip_run= -1;
2219
2220 h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
2221 (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
2222
2223 if( h->pps.cabac ) {
2224 /* realign */
2225 align_get_bits( &s->gb );
2226
2227 /* init cabac */
2228 ff_init_cabac_states( &h->cabac);
2229 ff_init_cabac_decoder( &h->cabac,
2230 s->gb.buffer + get_bits_count(&s->gb)/8,
2231 (get_bits_left(&s->gb) + 7)/8);
2232
2233 ff_h264_init_cabac_states(h);
2234
2235 for(;;){
2236 //START_TIMER
2237 int ret = ff_h264_decode_mb_cabac(h);
2238 int eos;
2239 //STOP_TIMER("decode_mb_cabac")
2240
2241 if(ret>=0) ff_h264_hl_decode_mb(h);
2242
2243 if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
2244 s->mb_y++;
2245
2246 ret = ff_h264_decode_mb_cabac(h);
2247
2248 if(ret>=0) ff_h264_hl_decode_mb(h);
2249 s->mb_y--;
2250 }
2251 eos = get_cabac_terminate( &h->cabac );
2252
2253 if((s->workaround_bugs & FF_BUG_TRUNCATED) && h->cabac.bytestream > h->cabac.bytestream_end + 2){
2254 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);
2255 return 0;
2256 }
2257 if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
2258 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);
2259 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);
2260 return -1;
2261 }
2262
2263 if( ++s->mb_x >= s->mb_width ) {
2264 s->mb_x = 0;
2265 loop_filter(h);
2266 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2267 ++s->mb_y;
2268 if(FIELD_OR_MBAFF_PICTURE) {
2269 ++s->mb_y;
2270 if(FRAME_MBAFF && s->mb_y < s->mb_height)
2271 predict_field_decoding_flag(h);
2272 }
2273 }
2274
2275 if( eos || s->mb_y >= s->mb_height ) {
2276 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2277 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);
2278 return 0;
2279 }
2280 }
2281
2282 } else {
2283 for(;;){
2284 int ret = ff_h264_decode_mb_cavlc(h);
2285
2286 if(ret>=0) ff_h264_hl_decode_mb(h);
2287
2288 if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
2289 s->mb_y++;
2290 ret = ff_h264_decode_mb_cavlc(h);
2291
2292 if(ret>=0) ff_h264_hl_decode_mb(h);
2293 s->mb_y--;
2294 }
2295
2296 if(ret<0){
2297 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2298 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);
2299
2300 return -1;
2301 }
2302
2303 if(++s->mb_x >= s->mb_width){
2304 s->mb_x=0;
2305 loop_filter(h);
2306 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2307 ++s->mb_y;
2308 if(FIELD_OR_MBAFF_PICTURE) {
2309 ++s->mb_y;
2310 if(FRAME_MBAFF && s->mb_y < s->mb_height)
2311 predict_field_decoding_flag(h);
2312 }
2313 if(s->mb_y >= s->mb_height){
2314 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2315
2316 if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
2317 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);
2318
2319 return 0;
2320 }else{
2321 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);
2322
2323 return -1;
2324 }
2325 }
2326 }
2327
2328 if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
2329 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2330 if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
2331 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);
2332
2333 return 0;
2334 }else{
2335 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);
2336
2337 return -1;
2338 }
2339 }
2340 }
2341 }
2342
2343 #if 0
2344 for(;s->mb_y < s->mb_height; s->mb_y++){
2345 for(;s->mb_x < s->mb_width; s->mb_x++){
2346 int ret= decode_mb(h);
2347
2348 ff_h264_hl_decode_mb(h);
2349
2350 if(ret<0){
2351 av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2352 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);
2353
2354 return -1;
2355 }
2356
2357 if(++s->mb_x >= s->mb_width){
2358 s->mb_x=0;
2359 if(++s->mb_y >= s->mb_height){
2360 if(get_bits_count(s->gb) == s->gb.size_in_bits){
2361 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);
2362
2363 return 0;
2364 }else{
2365 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);
2366
2367 return -1;
2368 }
2369 }
2370 }
2371
2372 if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
2373 if(get_bits_count(s->gb) == s->gb.size_in_bits){
2374 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);
2375
2376 return 0;
2377 }else{
2378 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);
2379
2380 return -1;
2381 }
2382 }
2383 }
2384 s->mb_x=0;
2385 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2386 }
2387 #endif
2388 return -1; //not reached
2389 }
2390
2391 /**
2392 * Call decode_slice() for each context.
2393 *
2394 * @param h h264 master context
2395 * @param context_count number of contexts to execute
2396 */
2397 static void execute_decode_slices(H264Context *h, int context_count){
2398 MpegEncContext * const s = &h->s;
2399 AVCodecContext * const avctx= s->avctx;
2400 H264Context *hx;
2401 int i;
2402
2403 if (s->avctx->hwaccel)
2404 return;
2405 if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2406 return;
2407 if(context_count == 1) {
2408 decode_slice(avctx, &h);
2409 } else {
2410 for(i = 1; i < context_count; i++) {
2411 hx = h->thread_context[i];
2412 hx->s.error_recognition = avctx->error_recognition;
2413 hx->s.error_count = 0;
2414 }
2415
2416 avctx->execute(avctx, (void *)decode_slice,
2417 h->thread_context, NULL, context_count, sizeof(void*));
2418
2419 /* pull back stuff from slices to master context */
2420 hx = h->thread_context[context_count - 1];
2421 s->mb_x = hx->s.mb_x;
2422 s->mb_y = hx->s.mb_y;
2423 s->dropable = hx->s.dropable;
2424 s->picture_structure = hx->s.picture_structure;
2425 for(i = 1; i < context_count; i++)
2426 h->s.error_count += h->thread_context[i]->s.error_count;
2427 }
2428 }
2429
2430
2431 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
2432 MpegEncContext * const s = &h->s;
2433 AVCodecContext * const avctx= s->avctx;
2434 int buf_index=0;
2435 H264Context *hx; ///< thread context
2436 int context_count = 0;
2437 int next_avc= h->is_avc ? 0 : buf_size;
2438
2439 h->max_contexts = avctx->thread_count;
2440 #if 0
2441 int i;
2442 for(i=0; i<50; i++){
2443 av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
2444 }
2445 #endif
2446 if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
2447 h->current_slice = 0;
2448 if (!s->first_field)
2449 s->current_picture_ptr= NULL;
2450 ff_h264_reset_sei(h);
2451 }
2452
2453 for(;;){
2454 int consumed;
2455 int dst_length;
2456 int bit_length;
2457 const uint8_t *ptr;
2458 int i, nalsize = 0;
2459 int err;
2460
2461 if(buf_index >= next_avc) {
2462 if(buf_index >= buf_size) break;
2463 nalsize = 0;
2464 for(i = 0; i < h->nal_length_size; i++)
2465 nalsize = (nalsize << 8) | buf[buf_index++];
2466 if(nalsize <= 1 || nalsize > buf_size - buf_index){
2467 if(nalsize == 1){
2468 buf_index++;
2469 continue;
2470 }else{
2471 av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
2472 break;
2473 }
2474 }
2475 next_avc= buf_index + nalsize;
2476 } else {
2477 // start code prefix search
2478 for(; buf_index + 3 < next_avc; buf_index++){
2479 // This should always succeed in the first iteration.
2480 if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
2481 break;
2482 }
2483
2484 if(buf_index+3 >= buf_size) break;
2485
2486 buf_index+=3;
2487 if(buf_index >= next_avc) continue;
2488 }
2489
2490 hx = h->thread_context[context_count];
2491
2492 ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index);
2493 if (ptr==NULL || dst_length < 0){
2494 return -1;
2495 }
2496 i= buf_index + consumed;
2497 if((s->workaround_bugs & FF_BUG_AUTODETECT) && i+3<next_avc &&
2498 buf[i]==0x00 && buf[i+1]==0x00 && buf[i+2]==0x01 && buf[i+3]==0xE0)
2499 s->workaround_bugs |= FF_BUG_TRUNCATED;
2500
2501 if(!(s->workaround_bugs & FF_BUG_TRUNCATED)){
2502 while(ptr[dst_length - 1] == 0 && dst_length > 0)
2503 dst_length--;
2504 }
2505 bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
2506
2507 if(s->avctx->debug&FF_DEBUG_STARTCODE){
2508 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);
2509 }
2510
2511 if (h->is_avc && (nalsize != consumed) && nalsize){
2512 av_log(h->s.avctx, AV_LOG_DEBUG, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
2513 }
2514
2515 buf_index += consumed;
2516
2517 if( (s->hurry_up == 1 && h->nal_ref_idc == 0) //FIXME do not discard SEI id
2518 ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2519 continue;
2520
2521 again:
2522 err = 0;
2523 switch(hx->nal_unit_type){
2524 case NAL_IDR_SLICE:
2525 if (h->nal_unit_type != NAL_IDR_SLICE) {
2526 av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
2527 return -1;
2528 }
2529 idr(h); //FIXME ensure we don't loose some frames if there is reordering
2530 case NAL_SLICE:
2531 init_get_bits(&hx->s.gb, ptr, bit_length);
2532 hx->intra_gb_ptr=
2533 hx->inter_gb_ptr= &hx->s.gb;
2534 hx->s.data_partitioning = 0;
2535
2536 if((err = decode_slice_header(hx, h)))
2537 break;
2538
2539 avctx->profile = hx->sps.profile_idc;
2540 avctx->level = hx->sps.level_idc;
2541
2542 if (s->avctx->hwaccel && h->current_slice == 1) {
2543 if (s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
2544 return -1;
2545 }
2546
2547 s->current_picture_ptr->key_frame |=
2548 (hx->nal_unit_type == NAL_IDR_SLICE) ||
2549 (h->sei_recovery_frame_cnt >= 0);
2550 if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5
2551 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2552 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=FF_B_TYPE)
2553 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2554 && avctx->skip_frame < AVDISCARD_ALL){
2555 if(avctx->hwaccel) {
2556 if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0)
2557 return -1;
2558 }else
2559 if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
2560 static const uint8_t start_code[] = {0x00, 0x00, 0x01};
2561 ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
2562 ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
2563 }else
2564 context_count++;
2565 }
2566 break;
2567 case NAL_DPA:
2568 init_get_bits(&hx->s.gb, ptr, bit_length);
2569 hx->intra_gb_ptr=
2570 hx->inter_gb_ptr= NULL;
2571
2572 if ((err = decode_slice_header(hx, h)) < 0)
2573 break;
2574
2575 avctx->profile = hx->sps.profile_idc;
2576 avctx->level = hx->sps.level_idc;
2577
2578 hx->s.data_partitioning = 1;
2579
2580 break;
2581 case NAL_DPB:
2582 init_get_bits(&hx->intra_gb, ptr, bit_length);
2583 hx->intra_gb_ptr= &hx->intra_gb;
2584 break;
2585 case NAL_DPC:
2586 init_get_bits(&hx->inter_gb, ptr, bit_length);
2587 hx->inter_gb_ptr= &hx->inter_gb;
2588
2589 if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
2590 && s->context_initialized
2591 && s->hurry_up < 5
2592 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2593 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=FF_B_TYPE)
2594 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2595 && avctx->skip_frame < AVDISCARD_ALL)
2596 context_count++;
2597 break;
2598 case NAL_SEI:
2599 init_get_bits(&s->gb, ptr, bit_length);
2600 ff_h264_decode_sei(h);
2601 break;
2602 case NAL_SPS:
2603 init_get_bits(&s->gb, ptr, bit_length);
2604 ff_h264_decode_seq_parameter_set(h);
2605
2606 if(s->flags& CODEC_FLAG_LOW_DELAY)
2607 s->low_delay=1;
2608
2609 if(avctx->has_b_frames < 2)
2610 avctx->has_b_frames= !s->low_delay;
2611 break;
2612 case NAL_PPS:
2613 init_get_bits(&s->gb, ptr, bit_length);
2614
2615 ff_h264_decode_picture_parameter_set(h, bit_length);
2616
2617 break;
2618 case NAL_AUD:
2619 case NAL_END_SEQUENCE:
2620 case NAL_END_STREAM:
2621 case NAL_FILLER_DATA:
2622 case NAL_SPS_EXT:
2623 case NAL_AUXILIARY_SLICE:
2624 break;
2625 default:
2626 av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", hx->nal_unit_type, bit_length);
2627 }
2628
2629 if(context_count == h->max_contexts) {
2630 execute_decode_slices(h, context_count);
2631 context_count = 0;
2632 }
2633
2634 if (err < 0)
2635 av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
2636 else if(err == 1) {
2637 /* Slice could not be decoded in parallel mode, copy down
2638 * NAL unit stuff to context 0 and restart. Note that
2639 * rbsp_buffer is not transferred, but since we no longer
2640 * run in parallel mode this should not be an issue. */
2641 h->nal_unit_type = hx->nal_unit_type;
2642 h->nal_ref_idc = hx->nal_ref_idc;
2643 hx = h;
2644 goto again;
2645 }
2646 }
2647 if(context_count)
2648 execute_decode_slices(h, context_count);
2649 return buf_index;
2650 }
2651
2652 /**
2653 * returns the number of bytes consumed for building the current frame
2654 */
2655 static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
2656 if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
2657 if(pos+10>buf_size) pos=buf_size; // oops ;)
2658
2659 return pos;
2660 }
2661
2662 static int decode_frame(AVCodecContext *avctx,
2663 void *data, int *data_size,
2664 AVPacket *avpkt)
2665 {
2666 const uint8_t *buf = avpkt->data;
2667 int buf_size = avpkt->size;
2668 H264Context *h = avctx->priv_data;
2669 MpegEncContext *s = &h->s;
2670 AVFrame *pict = data;
2671 int buf_index;
2672
2673 s->flags= avctx->flags;
2674 s->flags2= avctx->flags2;
2675
2676 /* end of stream, output what is still in the buffers */
2677 if (buf_size == 0) {
2678 Picture *out;
2679 int i, out_idx;
2680
2681 //FIXME factorize this with the output code below
2682 out = h->delayed_pic[0];
2683 out_idx = 0;
2684 for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2685 if(h->delayed_pic[i]->poc < out->poc){
2686 out = h->delayed_pic[i];
2687 out_idx = i;
2688 }
2689
2690 for(i=out_idx; h->delayed_pic[i]; i++)
2691 h->delayed_pic[i] = h->delayed_pic[i+1];
2692
2693 if(out){
2694 *data_size = sizeof(AVFrame);
2695 *pict= *(AVFrame*)out;
2696 }
2697
2698 return 0;
2699 }
2700
2701 if(h->is_avc && !h->got_avcC) {
2702 int i, cnt, nalsize;
2703 unsigned char *p = avctx->extradata;
2704 if(avctx->extradata_size < 7) {
2705 av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
2706 return -1;
2707 }
2708 if(*p != 1) {
2709 av_log(avctx, AV_LOG_ERROR, "Unknown avcC version %d\n", *p);
2710 return -1;
2711 }
2712 /* sps and pps in the avcC always have length coded with 2 bytes,
2713 so put a fake nal_length_size = 2 while parsing them */
2714 h->nal_length_size = 2;
2715 // Decode sps from avcC
2716 cnt = *(p+5) & 0x1f; // Number of sps
2717 p += 6;
2718 for (i = 0; i < cnt; i++) {
2719 nalsize = AV_RB16(p) + 2;
2720 if(decode_nal_units(h, p, nalsize) < 0) {
2721 av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
2722 return -1;
2723 }
2724 p += nalsize;
2725 }
2726 // Decode pps from avcC
2727 cnt = *(p++); // Number of pps
2728 for (i = 0; i < cnt; i++) {
2729 nalsize = AV_RB16(p) + 2;
2730 if(decode_nal_units(h, p, nalsize) != nalsize) {
2731 av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
2732 return -1;
2733 }
2734 p += nalsize;
2735 }
2736 // Now store right nal length size, that will be use to parse all other nals
2737 h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
2738 // Do not reparse avcC
2739 h->got_avcC = 1;
2740 }
2741
2742 if(!h->got_avcC && !h->is_avc && s->avctx->extradata_size){
2743 if(decode_nal_units(h, s->avctx->extradata, s->avctx->extradata_size) < 0)
2744 return -1;
2745 h->got_avcC = 1;
2746 }
2747
2748 buf_index=decode_nal_units(h, buf, buf_size);
2749 if(buf_index < 0)
2750 return -1;
2751
2752 if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
2753 if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
2754 av_log(avctx, AV_LOG_ERROR, "no frame!\n");
2755 return -1;
2756 }
2757
2758 if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
2759 Picture *out = s->current_picture_ptr;
2760 Picture *cur = s->current_picture_ptr;
2761 int i, pics, out_of_order, out_idx;
2762
2763 field_end(h);
2764
2765 if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
2766 /* Wait for second field. */
2767 *data_size = 0;
2768
2769 } else {
2770 cur->interlaced_frame = 0;
2771 cur->repeat_pict = 0;
2772
2773 /* Signal interlacing information externally. */
2774 /* Prioritize picture timing SEI information over used decoding process if it exists. */
2775
2776 if(h->sps.pic_struct_present_flag){
2777 switch (h->sei_pic_struct)
2778 {
2779 case SEI_PIC_STRUCT_FRAME:
2780 break;