Define AVMediaType enum, and use it instead of enum CodecType, which
[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 int8_t *mode= h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
56
57 AV_COPY32(mode, h->intra4x4_pred_mode_cache + 4 + 8*4);
58 mode[4]= h->intra4x4_pred_mode_cache[7+8*3];
59 mode[5]= h->intra4x4_pred_mode_cache[7+8*2];
60 mode[6]= h->intra4x4_pred_mode_cache[7+8*1];
61 }
62
63 /**
64 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
65 */
66 int ff_h264_check_intra4x4_pred_mode(H264Context *h){
67 MpegEncContext * const s = &h->s;
68 static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
69 static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
70 int i;
71
72 if(!(h->top_samples_available&0x8000)){
73 for(i=0; i<4; i++){
74 int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
75 if(status<0){
76 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);
77 return -1;
78 } else if(status){
79 h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
80 }
81 }
82 }
83
84 if((h->left_samples_available&0x8888)!=0x8888){
85 static const int mask[4]={0x8000,0x2000,0x80,0x20};
86 for(i=0; i<4; i++){
87 if(!(h->left_samples_available&mask[i])){
88 int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
89 if(status<0){
90 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);
91 return -1;
92 } else if(status){
93 h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
94 }
95 }
96 }
97 }
98
99 return 0;
100 } //FIXME cleanup like ff_h264_check_intra_pred_mode
101
102 /**
103 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
104 */
105 int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
106 MpegEncContext * const s = &h->s;
107 static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
108 static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
109
110 if(mode > 6U) {
111 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);
112 return -1;
113 }
114
115 if(!(h->top_samples_available&0x8000)){
116 mode= top[ mode ];
117 if(mode<0){
118 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);
119 return -1;
120 }
121 }
122
123 if((h->left_samples_available&0x8080) != 0x8080){
124 mode= left[ mode ];
125 if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
126 mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
127 }
128 if(mode<0){
129 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);
130 return -1;
131 }
132 }
133
134 return mode;
135 }
136
137 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
138 int i, si, di;
139 uint8_t *dst;
140 int bufidx;
141
142 // src[0]&0x80; //forbidden bit
143 h->nal_ref_idc= src[0]>>5;
144 h->nal_unit_type= src[0]&0x1F;
145
146 src++; length--;
147 #if 0
148 for(i=0; i<length; i++)
149 printf("%2X ", src[i]);
150 #endif
151
152 #if HAVE_FAST_UNALIGNED
153 # if HAVE_FAST_64BIT
154 # define RS 7
155 for(i=0; i+1<length; i+=9){
156 if(!((~AV_RN64A(src+i) & (AV_RN64A(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
157 # else
158 # define RS 3
159 for(i=0; i+1<length; i+=5){
160 if(!((~AV_RN32A(src+i) & (AV_RN32A(src+i) - 0x01000101U)) & 0x80008080U))
161 # endif
162 continue;
163 if(i>0 && !src[i]) i--;
164 while(src[i]) i++;
165 #else
166 # define RS 0
167 for(i=0; i+1<length; i+=2){
168 if(src[i]) continue;
169 if(i>0 && src[i-1]==0) i--;
170 #endif
171 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
172 if(src[i+2]!=3){
173 /* startcode, so we must be past the end */
174 length=i;
175 }
176 break;
177 }
178 i-= RS;
179 }
180
181 if(i>=length-1){ //no escaped 0
182 *dst_length= length;
183 *consumed= length+1; //+1 for the header
184 return src;
185 }
186
187 bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
188 av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
189 dst= h->rbsp_buffer[bufidx];
190
191 if (dst == NULL){
192 return NULL;
193 }
194
195 //printf("decoding esc\n");
196 memcpy(dst, src, i);
197 si=di=i;
198 while(si+2<length){
199 //remove escapes (very rare 1:2^22)
200 if(src[si+2]>3){
201 dst[di++]= src[si++];
202 dst[di++]= src[si++];
203 }else if(src[si]==0 && src[si+1]==0){
204 if(src[si+2]==3){ //escape
205 dst[di++]= 0;
206 dst[di++]= 0;
207 si+=3;
208 continue;
209 }else //next start code
210 goto nsc;
211 }
212
213 dst[di++]= src[si++];
214 }
215 while(si<length)
216 dst[di++]= src[si++];
217 nsc:
218
219 memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
220
221 *dst_length= di;
222 *consumed= si + 1;//+1 for the header
223 //FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
224 return dst;
225 }
226
227 int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
228 int v= *src;
229 int r;
230
231 tprintf(h->s.avctx, "rbsp trailing %X\n", v);
232
233 for(r=1; r<9; r++){
234 if(v&1) return r;
235 v>>=1;
236 }
237 return 0;
238 }
239
240 /**
241 * IDCT transforms the 16 dc values and dequantizes them.
242 * @param qp quantization parameter
243 */
244 static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
245 #define stride 16
246 int i;
247 int temp[16]; //FIXME check if this is a good idea
248 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
249 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
250
251 //memset(block, 64, 2*256);
252 //return;
253 for(i=0; i<4; i++){
254 const int offset= y_offset[i];
255 const int z0= block[offset+stride*0] + block[offset+stride*4];
256 const int z1= block[offset+stride*0] - block[offset+stride*4];
257 const int z2= block[offset+stride*1] - block[offset+stride*5];
258 const int z3= block[offset+stride*1] + block[offset+stride*5];
259
260 temp[4*i+0]= z0+z3;
261 temp[4*i+1]= z1+z2;
262 temp[4*i+2]= z1-z2;
263 temp[4*i+3]= z0-z3;
264 }
265
266 for(i=0; i<4; i++){
267 const int offset= x_offset[i];
268 const int z0= temp[4*0+i] + temp[4*2+i];
269 const int z1= temp[4*0+i] - temp[4*2+i];
270 const int z2= temp[4*1+i] - temp[4*3+i];
271 const int z3= temp[4*1+i] + temp[4*3+i];
272
273 block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
274 block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
275 block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
276 block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
277 }
278 }
279
280 #if 0
281 /**
282 * DCT transforms the 16 dc values.
283 * @param qp quantization parameter ??? FIXME
284 */
285 static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
286 // const int qmul= dequant_coeff[qp][0];
287 int i;
288 int temp[16]; //FIXME check if this is a good idea
289 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
290 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
291
292 for(i=0; i<4; i++){
293 const int offset= y_offset[i];
294 const int z0= block[offset+stride*0] + block[offset+stride*4];
295 const int z1= block[offset+stride*0] - block[offset+stride*4];
296 const int z2= block[offset+stride*1] - block[offset+stride*5];
297 const int z3= block[offset+stride*1] + block[offset+stride*5];
298
299 temp[4*i+0]= z0+z3;
300 temp[4*i+1]= z1+z2;
301 temp[4*i+2]= z1-z2;
302 temp[4*i+3]= z0-z3;
303 }
304
305 for(i=0; i<4; i++){
306 const int offset= x_offset[i];
307 const int z0= temp[4*0+i] + temp[4*2+i];
308 const int z1= temp[4*0+i] - temp[4*2+i];
309 const int z2= temp[4*1+i] - temp[4*3+i];
310 const int z3= temp[4*1+i] + temp[4*3+i];
311
312 block[stride*0 +offset]= (z0 + z3)>>1;
313 block[stride*2 +offset]= (z1 + z2)>>1;
314 block[stride*8 +offset]= (z1 - z2)>>1;
315 block[stride*10+offset]= (z0 - z3)>>1;
316 }
317 }
318 #endif
319
320 #undef xStride
321 #undef stride
322
323 static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
324 const int stride= 16*2;
325 const int xStride= 16;
326 int a,b,c,d,e;
327
328 a= block[stride*0 + xStride*0];
329 b= block[stride*0 + xStride*1];
330 c= block[stride*1 + xStride*0];
331 d= block[stride*1 + xStride*1];
332
333 e= a-b;
334 a= a+b;
335 b= c-d;
336 c= c+d;
337
338 block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
339 block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
340 block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
341 block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
342 }
343
344 #if 0
345 static void chroma_dc_dct_c(DCTELEM *block){
346 const int stride= 16*2;
347 const int xStride= 16;
348 int a,b,c,d,e;
349
350 a= block[stride*0 + xStride*0];
351 b= block[stride*0 + xStride*1];
352 c= block[stride*1 + xStride*0];
353 d= block[stride*1 + xStride*1];
354
355 e= a-b;
356 a= a+b;
357 b= c-d;
358 c= c+d;
359
360 block[stride*0 + xStride*0]= (a+c);
361 block[stride*0 + xStride*1]= (e+b);
362 block[stride*1 + xStride*0]= (a-c);
363 block[stride*1 + xStride*1]= (e-b);
364 }
365 #endif
366
367 static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
368 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
369 int src_x_offset, int src_y_offset,
370 qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
371 MpegEncContext * const s = &h->s;
372 const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
373 int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
374 const int luma_xy= (mx&3) + ((my&3)<<2);
375 uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
376 uint8_t * src_cb, * src_cr;
377 int extra_width= h->emu_edge_width;
378 int extra_height= h->emu_edge_height;
379 int emu=0;
380 const int full_mx= mx>>2;
381 const int full_my= my>>2;
382 const int pic_width = 16*s->mb_width;
383 const int pic_height = 16*s->mb_height >> MB_FIELD;
384
385 if(mx&7) extra_width -= 3;
386 if(my&7) extra_height -= 3;
387
388 if( full_mx < 0-extra_width
389 || full_my < 0-extra_height
390 || full_mx + 16/*FIXME*/ > pic_width + extra_width
391 || full_my + 16/*FIXME*/ > pic_height + extra_height){
392 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);
393 src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
394 emu=1;
395 }
396
397 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
398 if(!square){
399 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
400 }
401
402 if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
403
404 if(MB_FIELD){
405 // chroma offset when predicting from a field of opposite parity
406 my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
407 emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
408 }
409 src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
410 src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
411
412 if(emu){
413 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);
414 src_cb= s->edge_emu_buffer;
415 }
416 chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
417
418 if(emu){
419 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);
420 src_cr= s->edge_emu_buffer;
421 }
422 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
423 }
424
425 static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
426 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
427 int x_offset, int y_offset,
428 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
429 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
430 int list0, int list1){
431 MpegEncContext * const s = &h->s;
432 qpel_mc_func *qpix_op= qpix_put;
433 h264_chroma_mc_func chroma_op= chroma_put;
434
435 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
436 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
437 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
438 x_offset += 8*s->mb_x;
439 y_offset += 8*(s->mb_y >> MB_FIELD);
440
441 if(list0){
442 Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
443 mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
444 dest_y, dest_cb, dest_cr, x_offset, y_offset,
445 qpix_op, chroma_op);
446
447 qpix_op= qpix_avg;
448 chroma_op= chroma_avg;
449 }
450
451 if(list1){
452 Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
453 mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
454 dest_y, dest_cb, dest_cr, x_offset, y_offset,
455 qpix_op, chroma_op);
456 }
457 }
458
459 static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
460 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
461 int x_offset, int y_offset,
462 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
463 h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
464 h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
465 int list0, int list1){
466 MpegEncContext * const s = &h->s;
467
468 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
469 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
470 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
471 x_offset += 8*s->mb_x;
472 y_offset += 8*(s->mb_y >> MB_FIELD);
473
474 if(list0 && list1){
475 /* don't optimize for luma-only case, since B-frames usually
476 * use implicit weights => chroma too. */
477 uint8_t *tmp_cb = s->obmc_scratchpad;
478 uint8_t *tmp_cr = s->obmc_scratchpad + 8;
479 uint8_t *tmp_y = s->obmc_scratchpad + 8*h->mb_uvlinesize;
480 int refn0 = h->ref_cache[0][ scan8[n] ];
481 int refn1 = h->ref_cache[1][ scan8[n] ];
482
483 mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
484 dest_y, dest_cb, dest_cr,
485 x_offset, y_offset, qpix_put, chroma_put);
486 mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
487 tmp_y, tmp_cb, tmp_cr,
488 x_offset, y_offset, qpix_put, chroma_put);
489
490 if(h->use_weight == 2){
491 int weight0 = h->implicit_weight[refn0][refn1][s->mb_y&1];
492 int weight1 = 64 - weight0;
493 luma_weight_avg( dest_y, tmp_y, h-> mb_linesize, 5, weight0, weight1, 0);
494 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
495 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
496 }else{
497 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
498 h->luma_weight[refn0][0][0] , h->luma_weight[refn1][1][0],
499 h->luma_weight[refn0][0][1] + h->luma_weight[refn1][1][1]);
500 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
501 h->chroma_weight[refn0][0][0][0] , h->chroma_weight[refn1][1][0][0],
502 h->chroma_weight[refn0][0][0][1] + h->chroma_weight[refn1][1][0][1]);
503 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
504 h->chroma_weight[refn0][0][1][0] , h->chroma_weight[refn1][1][1][0],
505 h->chroma_weight[refn0][0][1][1] + h->chroma_weight[refn1][1][1][1]);
506 }
507 }else{
508 int list = list1 ? 1 : 0;
509 int refn = h->ref_cache[list][ scan8[n] ];
510 Picture *ref= &h->ref_list[list][refn];
511 mc_dir_part(h, ref, n, square, chroma_height, delta, list,
512 dest_y, dest_cb, dest_cr, x_offset, y_offset,
513 qpix_put, chroma_put);
514
515 luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
516 h->luma_weight[refn][list][0], h->luma_weight[refn][list][1]);
517 if(h->use_weight_chroma){
518 chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
519 h->chroma_weight[refn][list][0][0], h->chroma_weight[refn][list][0][1]);
520 chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
521 h->chroma_weight[refn][list][1][0], h->chroma_weight[refn][list][1][1]);
522 }
523 }
524 }
525
526 static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
527 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
528 int x_offset, int y_offset,
529 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
530 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
531 h264_weight_func *weight_op, h264_biweight_func *weight_avg,
532 int list0, int list1){
533 if((h->use_weight==2 && list0 && list1
534 && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ][h->s.mb_y&1] != 32))
535 || h->use_weight==1)
536 mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
537 x_offset, y_offset, qpix_put, chroma_put,
538 weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
539 else
540 mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
541 x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
542 }
543
544 static inline void prefetch_motion(H264Context *h, int list){
545 /* fetch pixels for estimated mv 4 macroblocks ahead
546 * optimized for 64byte cache lines */
547 MpegEncContext * const s = &h->s;
548 const int refn = h->ref_cache[list][scan8[0]];
549 if(refn >= 0){
550 const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
551 const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
552 uint8_t **src= h->ref_list[list][refn].data;
553 int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
554 s->dsp.prefetch(src[0]+off, s->linesize, 4);
555 off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
556 s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
557 }
558 }
559
560 static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
561 qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
562 qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
563 h264_weight_func *weight_op, h264_biweight_func *weight_avg){
564 MpegEncContext * const s = &h->s;
565 const int mb_xy= h->mb_xy;
566 const int mb_type= s->current_picture.mb_type[mb_xy];
567
568 assert(IS_INTER(mb_type));
569
570 prefetch_motion(h, 0);
571
572 if(IS_16X16(mb_type)){
573 mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
574 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
575 weight_op, weight_avg,
576 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
577 }else if(IS_16X8(mb_type)){
578 mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
579 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
580 &weight_op[1], &weight_avg[1],
581 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
582 mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
583 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
584 &weight_op[1], &weight_avg[1],
585 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
586 }else if(IS_8X16(mb_type)){
587 mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
588 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
589 &weight_op[2], &weight_avg[2],
590 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
591 mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
592 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
593 &weight_op[2], &weight_avg[2],
594 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
595 }else{
596 int i;
597
598 assert(IS_8X8(mb_type));
599
600 for(i=0; i<4; i++){
601 const int sub_mb_type= h->sub_mb_type[i];
602 const int n= 4*i;
603 int x_offset= (i&1)<<2;
604 int y_offset= (i&2)<<1;
605
606 if(IS_SUB_8X8(sub_mb_type)){
607 mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
608 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
609 &weight_op[3], &weight_avg[3],
610 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
611 }else if(IS_SUB_8X4(sub_mb_type)){
612 mc_part(h, n , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
613 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
614 &weight_op[4], &weight_avg[4],
615 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
616 mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
617 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
618 &weight_op[4], &weight_avg[4],
619 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
620 }else if(IS_SUB_4X8(sub_mb_type)){
621 mc_part(h, n , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
622 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
623 &weight_op[5], &weight_avg[5],
624 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
625 mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
626 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
627 &weight_op[5], &weight_avg[5],
628 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
629 }else{
630 int j;
631 assert(IS_SUB_4X4(sub_mb_type));
632 for(j=0; j<4; j++){
633 int sub_x_offset= x_offset + 2*(j&1);
634 int sub_y_offset= y_offset + (j&2);
635 mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
636 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
637 &weight_op[6], &weight_avg[6],
638 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
639 }
640 }
641 }
642 }
643
644 prefetch_motion(h, 1);
645 }
646
647
648 static void free_tables(H264Context *h){
649 int i;
650 H264Context *hx;
651 av_freep(&h->intra4x4_pred_mode);
652 av_freep(&h->chroma_pred_mode_table);
653 av_freep(&h->cbp_table);
654 av_freep(&h->mvd_table[0]);
655 av_freep(&h->mvd_table[1]);
656 av_freep(&h->direct_table);
657 av_freep(&h->non_zero_count);
658 av_freep(&h->slice_table_base);
659 h->slice_table= NULL;
660 av_freep(&h->list_counts);
661
662 av_freep(&h->mb2b_xy);
663 av_freep(&h->mb2br_xy);
664
665 for(i = 0; i < MAX_THREADS; i++) {
666 hx = h->thread_context[i];
667 if(!hx) continue;
668 av_freep(&hx->top_borders[1]);
669 av_freep(&hx->top_borders[0]);
670 av_freep(&hx->s.obmc_scratchpad);
671 av_freep(&hx->rbsp_buffer[1]);
672 av_freep(&hx->rbsp_buffer[0]);
673 hx->rbsp_buffer_size[0] = 0;
674 hx->rbsp_buffer_size[1] = 0;
675 if (i) av_freep(&h->thread_context[i]);
676 }
677 }
678
679 static void init_dequant8_coeff_table(H264Context *h){
680 int i,q,x;
681 const int transpose = (h->h264dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
682 h->dequant8_coeff[0] = h->dequant8_buffer[0];
683 h->dequant8_coeff[1] = h->dequant8_buffer[1];
684
685 for(i=0; i<2; i++ ){
686 if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
687 h->dequant8_coeff[1] = h->dequant8_buffer[0];
688 break;
689 }
690
691 for(q=0; q<52; q++){
692 int shift = div6[q];
693 int idx = rem6[q];
694 for(x=0; x<64; x++)
695 h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
696 ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
697 h->pps.scaling_matrix8[i][x]) << shift;
698 }
699 }
700 }
701
702 static void init_dequant4_coeff_table(H264Context *h){
703 int i,j,q,x;
704 const int transpose = (h->h264dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
705 for(i=0; i<6; i++ ){
706 h->dequant4_coeff[i] = h->dequant4_buffer[i];
707 for(j=0; j<i; j++){
708 if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
709 h->dequant4_coeff[i] = h->dequant4_buffer[j];
710 break;
711 }
712 }
713 if(j<i)
714 continue;
715
716 for(q=0; q<52; q++){
717 int shift = div6[q] + 2;
718 int idx = rem6[q];
719 for(x=0; x<16; x++)
720 h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
721 ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
722 h->pps.scaling_matrix4[i][x]) << shift;
723 }
724 }
725 }
726
727 static void init_dequant_tables(H264Context *h){
728 int i,x;
729 init_dequant4_coeff_table(h);
730 if(h->pps.transform_8x8_mode)
731 init_dequant8_coeff_table(h);
732 if(h->sps.transform_bypass){
733 for(i=0; i<6; i++)
734 for(x=0; x<16; x++)
735 h->dequant4_coeff[i][0][x] = 1<<6;
736 if(h->pps.transform_8x8_mode)
737 for(i=0; i<2; i++)
738 for(x=0; x<64; x++)
739 h->dequant8_coeff[i][0][x] = 1<<6;
740 }
741 }
742
743
744 int ff_h264_alloc_tables(H264Context *h){
745 MpegEncContext * const s = &h->s;
746 const int big_mb_num= s->mb_stride * (s->mb_height+1);
747 const int row_mb_num= 2*s->mb_stride*s->avctx->thread_count;
748 int x,y;
749
750 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, row_mb_num * 8 * sizeof(uint8_t), fail)
751
752 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count , big_mb_num * 32 * sizeof(uint8_t), fail)
753 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail)
754 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail)
755
756 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail)
757 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 16*row_mb_num * sizeof(uint8_t), fail);
758 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 16*row_mb_num * sizeof(uint8_t), fail);
759 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 4*big_mb_num * sizeof(uint8_t) , fail);
760 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts, big_mb_num * sizeof(uint8_t), fail)
761
762 memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base));
763 h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
764
765 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy , big_mb_num * sizeof(uint32_t), fail);
766 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2br_xy , big_mb_num * sizeof(uint32_t), fail);
767 for(y=0; y<s->mb_height; y++){
768 for(x=0; x<s->mb_width; x++){
769 const int mb_xy= x + y*s->mb_stride;
770 const int b_xy = 4*x + 4*y*h->b_stride;
771
772 h->mb2b_xy [mb_xy]= b_xy;
773 h->mb2br_xy[mb_xy]= 8*(FMO ? mb_xy : (mb_xy % (2*s->mb_stride)));
774 }
775 }
776
777 s->obmc_scratchpad = NULL;
778
779 if(!h->dequant4_coeff[0])
780 init_dequant_tables(h);
781
782 return 0;
783 fail:
784 free_tables(h);
785 return -1;
786 }
787
788 /**
789 * Mimic alloc_tables(), but for every context thread.
790 */
791 static void clone_tables(H264Context *dst, H264Context *src, int i){
792 MpegEncContext * const s = &src->s;
793 dst->intra4x4_pred_mode = src->intra4x4_pred_mode + i*8*2*s->mb_stride;
794 dst->non_zero_count = src->non_zero_count;
795 dst->slice_table = src->slice_table;
796 dst->cbp_table = src->cbp_table;
797 dst->mb2b_xy = src->mb2b_xy;
798 dst->mb2br_xy = src->mb2br_xy;
799 dst->chroma_pred_mode_table = src->chroma_pred_mode_table;
800 dst->mvd_table[0] = src->mvd_table[0] + i*8*2*s->mb_stride;
801 dst->mvd_table[1] = src->mvd_table[1] + i*8*2*s->mb_stride;
802 dst->direct_table = src->direct_table;
803 dst->list_counts = src->list_counts;
804
805 dst->s.obmc_scratchpad = NULL;
806 ff_h264_pred_init(&dst->hpc, src->s.codec_id);
807 }
808
809 /**
810 * Init context
811 * Allocate buffers which are not shared amongst multiple threads.
812 */
813 static int context_init(H264Context *h){
814 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
815 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
816
817 h->ref_cache[0][scan8[5 ]+1] = h->ref_cache[0][scan8[7 ]+1] = h->ref_cache[0][scan8[13]+1] =
818 h->ref_cache[1][scan8[5 ]+1] = h->ref_cache[1][scan8[7 ]+1] = h->ref_cache[1][scan8[13]+1] = PART_NOT_AVAILABLE;
819
820 return 0;
821 fail:
822 return -1; // free_tables will clean up for us
823 }
824
825 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size);
826
827 static av_cold void common_init(H264Context *h){
828 MpegEncContext * const s = &h->s;
829
830 s->width = s->avctx->width;
831 s->height = s->avctx->height;
832 s->codec_id= s->avctx->codec->id;
833
834 ff_h264dsp_init(&h->h264dsp);
835 ff_h264_pred_init(&h->hpc, s->codec_id);
836
837 h->dequant_coeff_pps= -1;
838 s->unrestricted_mv=1;
839 s->decode=1; //FIXME
840
841 dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
842
843 memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
844 memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
845 }
846
847 av_cold int ff_h264_decode_init(AVCodecContext *avctx){
848 H264Context *h= avctx->priv_data;
849 MpegEncContext * const s = &h->s;
850
851 MPV_decode_defaults(s);
852
853 s->avctx = avctx;
854 common_init(h);
855
856 s->out_format = FMT_H264;
857 s->workaround_bugs= avctx->workaround_bugs;
858
859 // set defaults
860 // s->decode_mb= ff_h263_decode_mb;
861 s->quarter_sample = 1;
862 if(!avctx->has_b_frames)
863 s->low_delay= 1;
864
865 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
866
867 ff_h264_decode_init_vlc();
868
869 h->thread_context[0] = h;
870 h->outputed_poc = INT_MIN;
871 h->prev_poc_msb= 1<<16;
872 h->x264_build = -1;
873 ff_h264_reset_sei(h);
874 if(avctx->codec_id == CODEC_ID_H264){
875 if(avctx->ticks_per_frame == 1){
876 s->avctx->time_base.den *=2;
877 }
878 avctx->ticks_per_frame = 2;
879 }
880
881 if(avctx->extradata_size > 0 && avctx->extradata && *(char *)avctx->extradata == 1){
882 int i, cnt, nalsize;
883 unsigned char *p = avctx->extradata;
884
885 h->is_avc = 1;
886
887 if(avctx->extradata_size < 7) {
888 av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
889 return -1;
890 }
891 /* sps and pps in the avcC always have length coded with 2 bytes,
892 so put a fake nal_length_size = 2 while parsing them */
893 h->nal_length_size = 2;
894 // Decode sps from avcC
895 cnt = *(p+5) & 0x1f; // Number of sps
896 p += 6;
897 for (i = 0; i < cnt; i++) {
898 nalsize = AV_RB16(p) + 2;
899 if(decode_nal_units(h, p, nalsize) < 0) {
900 av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
901 return -1;
902 }
903 p += nalsize;
904 }
905 // Decode pps from avcC
906 cnt = *(p++); // Number of pps
907 for (i = 0; i < cnt; i++) {
908 nalsize = AV_RB16(p) + 2;
909 if(decode_nal_units(h, p, nalsize) != nalsize) {
910 av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
911 return -1;
912 }
913 p += nalsize;
914 }
915 // Now store right nal length size, that will be use to parse all other nals
916 h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
917 } else {
918 h->is_avc = 0;
919 if(decode_nal_units(h, s->avctx->extradata, s->avctx->extradata_size) < 0)
920 return -1;
921 }
922 if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames < h->sps.num_reorder_frames){
923 s->avctx->has_b_frames = h->sps.num_reorder_frames;
924 s->low_delay = 0;
925 }
926
927 return 0;
928 }
929
930 int ff_h264_frame_start(H264Context *h){
931 MpegEncContext * const s = &h->s;
932 int i;
933
934 if(MPV_frame_start(s, s->avctx) < 0)
935 return -1;
936 ff_er_frame_start(s);
937 /*
938 * MPV_frame_start uses pict_type to derive key_frame.
939 * This is incorrect for H.264; IDR markings must be used.
940 * Zero here; IDR markings per slice in frame or fields are ORed in later.
941 * See decode_nal_units().
942 */
943 s->current_picture_ptr->key_frame= 0;
944 s->current_picture_ptr->mmco_reset= 0;
945
946 assert(s->linesize && s->uvlinesize);
947
948 for(i=0; i<16; i++){
949 h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
950 h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
951 }
952 for(i=0; i<4; i++){
953 h->block_offset[16+i]=
954 h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
955 h->block_offset[24+16+i]=
956 h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
957 }
958
959 /* can't be in alloc_tables because linesize isn't known there.
960 * FIXME: redo bipred weight to not require extra buffer? */
961 for(i = 0; i < s->avctx->thread_count; i++)
962 if(!h->thread_context[i]->s.obmc_scratchpad)
963 h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
964
965 /* some macroblocks can be accessed before they're available in case of lost slices, mbaff or threading*/
966 memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
967
968 // s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
969
970 // We mark the current picture as non-reference after allocating it, so
971 // that if we break out due to an error it can be released automatically
972 // in the next MPV_frame_start().
973 // SVQ3 as well as most other codecs have only last/next/current and thus
974 // get released even with set reference, besides SVQ3 and others do not
975 // mark frames as reference later "naturally".
976 if(s->codec_id != CODEC_ID_SVQ3)
977 s->current_picture_ptr->reference= 0;
978
979 s->current_picture_ptr->field_poc[0]=
980 s->current_picture_ptr->field_poc[1]= INT_MAX;
981 assert(s->current_picture_ptr->long_ref==0);
982
983 return 0;
984 }
985
986 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){
987 MpegEncContext * const s = &h->s;
988 uint8_t *top_border;
989 int top_idx = 1;
990
991 src_y -= linesize;
992 src_cb -= uvlinesize;
993 src_cr -= uvlinesize;
994
995 if(!simple && FRAME_MBAFF){
996 if(s->mb_y&1){
997 if(!MB_MBAFF){
998 top_border = h->top_borders[0][s->mb_x];
999 AV_COPY128(top_border, src_y + 15*linesize);
1000 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1001 AV_COPY64(top_border+16, src_cb+7*uvlinesize);
1002 AV_COPY64(top_border+24, src_cr+7*uvlinesize);
1003 }
1004 }
1005 }else if(MB_MBAFF){
1006 top_idx = 0;
1007 }else
1008 return;
1009 }
1010
1011 top_border = h->top_borders[top_idx][s->mb_x];
1012 // There are two lines saved, the line above the the top macroblock of a pair,
1013 // and the line above the bottom macroblock
1014 AV_COPY128(top_border, src_y + 16*linesize);
1015
1016 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1017 AV_COPY64(top_border+16, src_cb+8*uvlinesize);
1018 AV_COPY64(top_border+24, src_cr+8*uvlinesize);
1019 }
1020 }
1021
1022 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){
1023 MpegEncContext * const s = &h->s;
1024 int deblock_left;
1025 int deblock_top;
1026 int top_idx = 1;
1027 uint8_t *top_border_m1;
1028 uint8_t *top_border;
1029
1030 if(!simple && FRAME_MBAFF){
1031 if(s->mb_y&1){
1032 if(!MB_MBAFF)
1033 return;
1034 }else{
1035 top_idx = MB_MBAFF ? 0 : 1;
1036 }
1037 }
1038
1039 if(h->deblocking_filter == 2) {
1040 deblock_left = h->left_type[0];
1041 deblock_top = h->top_type;
1042 } else {
1043 deblock_left = (s->mb_x > 0);
1044 deblock_top = (s->mb_y > !!MB_FIELD);
1045 }
1046
1047 src_y -= linesize + 1;
1048 src_cb -= uvlinesize + 1;
1049 src_cr -= uvlinesize + 1;
1050
1051 top_border_m1 = h->top_borders[top_idx][s->mb_x-1];
1052 top_border = h->top_borders[top_idx][s->mb_x];
1053
1054 #define XCHG(a,b,xchg)\
1055 if (xchg) AV_SWAP64(b,a);\
1056 else AV_COPY64(b,a);
1057
1058 if(deblock_top){
1059 if(deblock_left){
1060 XCHG(top_border_m1+8, src_y -7, 1);
1061 }
1062 XCHG(top_border+0, src_y +1, xchg);
1063 XCHG(top_border+8, src_y +9, 1);
1064 if(s->mb_x+1 < s->mb_width){
1065 XCHG(h->top_borders[top_idx][s->mb_x+1], src_y +17, 1);
1066 }
1067 }
1068
1069 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1070 if(deblock_top){
1071 if(deblock_left){
1072 XCHG(top_border_m1+16, src_cb -7, 1);
1073 XCHG(top_border_m1+24, src_cr -7, 1);
1074 }
1075 XCHG(top_border+16, src_cb+1, 1);
1076 XCHG(top_border+24, src_cr+1, 1);
1077 }
1078 }
1079 }
1080
1081 static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
1082 MpegEncContext * const s = &h->s;
1083 const int mb_x= s->mb_x;
1084 const int mb_y= s->mb_y;
1085 const int mb_xy= h->mb_xy;
1086 const int mb_type= s->current_picture.mb_type[mb_xy];
1087 uint8_t *dest_y, *dest_cb, *dest_cr;
1088 int linesize, uvlinesize /*dct_offset*/;
1089 int i;
1090 int *block_offset = &h->block_offset[0];
1091 const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
1092 /* is_h264 should always be true if SVQ3 is disabled. */
1093 const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
1094 void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1095 void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1096
1097 dest_y = s->current_picture.data[0] + (mb_x + mb_y * s->linesize ) * 16;
1098 dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
1099 dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
1100
1101 s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
1102 s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
1103
1104 h->list_counts[mb_xy]= h->list_count;
1105
1106 if (!simple && MB_FIELD) {
1107 linesize = h->mb_linesize = s->linesize * 2;
1108 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
1109 block_offset = &h->block_offset[24];
1110 if(mb_y&1){ //FIXME move out of this function?
1111 dest_y -= s->linesize*15;
1112 dest_cb-= s->uvlinesize*7;
1113 dest_cr-= s->uvlinesize*7;
1114 }
1115 if(FRAME_MBAFF) {
1116 int list;
1117 for(list=0; list<h->list_count; list++){
1118 if(!USES_LIST(mb_type, list))
1119 continue;
1120 if(IS_16X16(mb_type)){
1121 int8_t *ref = &h->ref_cache[list][scan8[0]];
1122 fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
1123 }else{
1124 for(i=0; i<16; i+=4){
1125 int ref = h->ref_cache[list][scan8[i]];
1126 if(ref >= 0)
1127 fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
1128 }
1129 }
1130 }
1131 }
1132 } else {
1133 linesize = h->mb_linesize = s->linesize;
1134 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
1135 // dct_offset = s->linesize * 16;
1136 }
1137
1138 if (!simple && IS_INTRA_PCM(mb_type)) {
1139 for (i=0; i<16; i++) {
1140 memcpy(dest_y + i* linesize, h->mb + i*8, 16);
1141 }
1142 for (i=0; i<8; i++) {
1143 memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4, 8);
1144 memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4, 8);
1145 }
1146 } else {
1147 if(IS_INTRA(mb_type)){
1148 if(h->deblocking_filter)
1149 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
1150
1151 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1152 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
1153 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
1154 }
1155
1156 if(IS_INTRA4x4(mb_type)){
1157 if(simple || !s->encoding){
1158 if(IS_8x8DCT(mb_type)){
1159 if(transform_bypass){
1160 idct_dc_add =
1161 idct_add = s->dsp.add_pixels8;
1162 }else{
1163 idct_dc_add = h->h264dsp.h264_idct8_dc_add;
1164 idct_add = h->h264dsp.h264_idct8_add;
1165 }
1166 for(i=0; i<16; i+=4){
1167 uint8_t * const ptr= dest_y + block_offset[i];
1168 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1169 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1170 h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
1171 }else{
1172 const int nnz = h->non_zero_count_cache[ scan8[i] ];
1173 h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
1174 (h->topright_samples_available<<i)&0x4000, linesize);
1175 if(nnz){
1176 if(nnz == 1 && h->mb[i*16])
1177 idct_dc_add(ptr, h->mb + i*16, linesize);
1178 else
1179 idct_add (ptr, h->mb + i*16, linesize);
1180 }
1181 }
1182 }
1183 }else{
1184 if(transform_bypass){
1185 idct_dc_add =
1186 idct_add = s->dsp.add_pixels4;
1187 }else{
1188 idct_dc_add = h->h264dsp.h264_idct_dc_add;
1189 idct_add = h->h264dsp.h264_idct_add;
1190 }
1191 for(i=0; i<16; i++){
1192 uint8_t * const ptr= dest_y + block_offset[i];
1193 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1194
1195 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1196 h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
1197 }else{
1198 uint8_t *topright;
1199 int nnz, tr;
1200 if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
1201 const int topright_avail= (h->topright_samples_available<<i)&0x8000;
1202 assert(mb_y || linesize <= block_offset[i]);
1203 if(!topright_avail){
1204 tr= ptr[3 - linesize]*0x01010101;
1205 topright= (uint8_t*) &tr;
1206 }else
1207 topright= ptr + 4 - linesize;
1208 }else
1209 topright= NULL;
1210
1211 h->hpc.pred4x4[ dir ](ptr, topright, linesize);
1212 nnz = h->non_zero_count_cache[ scan8[i] ];
1213 if(nnz){
1214 if(is_h264){
1215 if(nnz == 1 && h->mb[i*16])
1216 idct_dc_add(ptr, h->mb + i*16, linesize);
1217 else
1218 idct_add (ptr, h->mb + i*16, linesize);
1219 }else
1220 ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
1221 }
1222 }
1223 }
1224 }
1225 }
1226 }else{
1227 h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
1228 if(is_h264){
1229 if(!transform_bypass)
1230 h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
1231 }else
1232 ff_svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
1233 }
1234 if(h->deblocking_filter)
1235 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
1236 }else if(is_h264){
1237 hl_motion(h, dest_y, dest_cb, dest_cr,
1238 s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1239 s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1240 h->h264dsp.weight_h264_pixels_tab, h->h264dsp.biweight_h264_pixels_tab);
1241 }
1242
1243
1244 if(!IS_INTRA4x4(mb_type)){
1245 if(is_h264){
1246 if(IS_INTRA16x16(mb_type)){
1247 if(transform_bypass){
1248 if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
1249 h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
1250 }else{
1251 for(i=0; i<16; i++){
1252 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1253 s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
1254 }
1255 }
1256 }else{
1257 h->h264dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1258 }
1259 }else if(h->cbp&15){
1260 if(transform_bypass){
1261 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1262 idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
1263 for(i=0; i<16; i+=di){
1264 if(h->non_zero_count_cache[ scan8[i] ]){
1265 idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
1266 }
1267 }
1268 }else{
1269 if(IS_8x8DCT(mb_type)){
1270 h->h264dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1271 }else{
1272 h->h264dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1273 }
1274 }
1275 }
1276 }else{
1277 for(i=0; i<16; i++){
1278 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
1279 uint8_t * const ptr= dest_y + block_offset[i];
1280 ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1281 }
1282 }
1283 }
1284 }
1285
1286 if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
1287 uint8_t *dest[2] = {dest_cb, dest_cr};
1288 if(transform_bypass){
1289 if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
1290 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
1291 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
1292 }else{
1293 idct_add = s->dsp.add_pixels4;
1294 for(i=16; i<16+8; i++){
1295 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1296 idct_add (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1297 }
1298 }
1299 }else{
1300 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]);
1301 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]);
1302 if(is_h264){
1303 idct_add = h->h264dsp.h264_idct_add;
1304 idct_dc_add = h->h264dsp.h264_idct_dc_add;
1305 for(i=16; i<16+8; i++){
1306 if(h->non_zero_count_cache[ scan8[i] ])
1307 idct_add (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1308 else if(h->mb[i*16])
1309 idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1310 }
1311 }else{
1312 for(i=16; i<16+8; i++){
1313 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
1314 uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
1315 ff_svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[s->qscale + 12] - 12, 2);
1316 }
1317 }
1318 }
1319 }
1320 }
1321 }
1322 if(h->cbp || IS_INTRA(mb_type))
1323 s->dsp.clear_blocks(h->mb);
1324 }
1325
1326 /**
1327 * Process a macroblock; this case avoids checks for expensive uncommon cases.
1328 */
1329 static void hl_decode_mb_simple(H264Context *h){
1330 hl_decode_mb_internal(h, 1);
1331 }
1332
1333 /**
1334 * Process a macroblock; this handles edge cases, such as interlacing.
1335 */
1336 static void av_noinline hl_decode_mb_complex(H264Context *h){
1337 hl_decode_mb_internal(h, 0);
1338 }
1339
1340 void ff_h264_hl_decode_mb(H264Context *h){
1341 MpegEncContext * const s = &h->s;
1342 const int mb_xy= h->mb_xy;
1343 const int mb_type= s->current_picture.mb_type[mb_xy];
1344 int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1345
1346 if (is_complex)
1347 hl_decode_mb_complex(h);
1348 else hl_decode_mb_simple(h);
1349 }
1350
1351 static int pred_weight_table(H264Context *h){
1352 MpegEncContext * const s = &h->s;
1353 int list, i;
1354 int luma_def, chroma_def;
1355
1356 h->use_weight= 0;
1357 h->use_weight_chroma= 0;
1358 h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
1359 h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
1360 luma_def = 1<<h->luma_log2_weight_denom;
1361 chroma_def = 1<<h->chroma_log2_weight_denom;
1362
1363 for(list=0; list<2; list++){
1364 h->luma_weight_flag[list] = 0;
1365 h->chroma_weight_flag[list] = 0;
1366 for(i=0; i<h->ref_count[list]; i++){
1367 int luma_weight_flag, chroma_weight_flag;
1368
1369 luma_weight_flag= get_bits1(&s->gb);
1370 if(luma_weight_flag){
1371 h->luma_weight[i][list][0]= get_se_golomb(&s->gb);
1372 h->luma_weight[i][list][1]= get_se_golomb(&s->gb);
1373 if( h->luma_weight[i][list][0] != luma_def
1374 || h->luma_weight[i][list][1] != 0) {
1375 h->use_weight= 1;
1376 h->luma_weight_flag[list]= 1;
1377 }
1378 }else{
1379 h->luma_weight[i][list][0]= luma_def;
1380 h->luma_weight[i][list][1]= 0;
1381 }
1382
1383 if(CHROMA){
1384 chroma_weight_flag= get_bits1(&s->gb);
1385 if(chroma_weight_flag){
1386 int j;
1387 for(j=0; j<2; j++){
1388 h->chroma_weight[i][list][j][0]= get_se_golomb(&s->gb);
1389 h->chroma_weight[i][list][j][1]= get_se_golomb(&s->gb);
1390 if( h->chroma_weight[i][list][j][0] != chroma_def
1391 || h->chroma_weight[i][list][j][1] != 0) {
1392 h->use_weight_chroma= 1;
1393 h->chroma_weight_flag[list]= 1;
1394 }
1395 }
1396 }else{
1397 int j;
1398 for(j=0; j<2; j++){
1399 h->chroma_weight[i][list][j][0]= chroma_def;
1400 h->chroma_weight[i][list][j][1]= 0;
1401 }
1402 }
1403 }
1404 }
1405 if(h->slice_type_nos != FF_B_TYPE) break;
1406 }
1407 h->use_weight= h->use_weight || h->use_weight_chroma;
1408 return 0;
1409 }
1410
1411 /**
1412 * Initialize implicit_weight table.
1413 * @param field, 0/1 initialize the weight for interlaced MBAFF
1414 * -1 initializes the rest
1415 */
1416 static void implicit_weight_table(H264Context *h, int field){
1417 MpegEncContext * const s = &h->s;
1418 int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
1419
1420 for (i = 0; i < 2; i++) {
1421 h->luma_weight_flag[i] = 0;
1422 h->chroma_weight_flag[i] = 0;
1423 }
1424
1425 if(field < 0){
1426 cur_poc = s->current_picture_ptr->poc;
1427 if( h->ref_count[0] == 1 && h->ref_count[1] == 1 && !FRAME_MBAFF
1428 && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
1429 h->use_weight= 0;
1430 h->use_weight_chroma= 0;
1431 return;
1432 }
1433 ref_start= 0;
1434 ref_count0= h->ref_count[0];
1435 ref_count1= h->ref_count[1];
1436 }else{
1437 cur_poc = s->current_picture_ptr->field_poc[field];
1438 ref_start= 16;
1439 ref_count0= 16+2*h->ref_count[0];
1440 ref_count1= 16+2*h->ref_count[1];
1441 }
1442
1443 h->use_weight= 2;
1444 h->use_weight_chroma= 2;
1445 h->luma_log2_weight_denom= 5;
1446 h->chroma_log2_weight_denom= 5;
1447
1448 for(ref0=ref_start; ref0 < ref_count0; ref0++){
1449 int poc0 = h->ref_list[0][ref0].poc;
1450 for(ref1=ref_start; ref1 < ref_count1; ref1++){
1451 int poc1 = h->ref_list[1][ref1].poc;
1452 int td = av_clip(poc1 - poc0, -128, 127);
1453 int w= 32;
1454 if(td){
1455 int tb = av_clip(cur_poc - poc0, -128, 127);
1456 int tx = (16384 + (FFABS(td) >> 1)) / td;
1457 int dist_scale_factor = (tb*tx + 32) >> 8;
1458 if(dist_scale_factor >= -64 && dist_scale_factor <= 128)
1459 w = 64 - dist_scale_factor;
1460 }
1461 if(field<0){
1462 h->implicit_weight[ref0][ref1][0]=
1463 h->implicit_weight[ref0][ref1][1]= w;
1464 }else{
1465 h->implicit_weight[ref0][ref1][field]=w;
1466 }
1467 }
1468 }
1469 }
1470
1471 /**
1472 * instantaneous decoder refresh.
1473 */
1474 static void idr(H264Context *h){
1475 ff_h264_remove_all_refs(h);
1476 h->prev_frame_num= 0;
1477 h->prev_frame_num_offset= 0;
1478 h->prev_poc_msb=
1479 h->prev_poc_lsb= 0;
1480 }
1481
1482 /* forget old pics after a seek */
1483 static void flush_dpb(AVCodecContext *avctx){
1484 H264Context *h= avctx->priv_data;
1485 int i;
1486 for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
1487 if(h->delayed_pic[i])
1488 h->delayed_pic[i]->reference= 0;
1489 h->delayed_pic[i]= NULL;
1490 }
1491 h->outputed_poc= INT_MIN;
1492 h->prev_interlaced_frame = 1;
1493 idr(h);
1494 if(h->s.current_picture_ptr)
1495 h->s.current_picture_ptr->reference= 0;
1496 h->s.first_field= 0;
1497 ff_h264_reset_sei(h);
1498 ff_mpeg_flush(avctx);
1499 }
1500
1501 static int init_poc(H264Context *h){
1502 MpegEncContext * const s = &h->s;
1503 const int max_frame_num= 1<<h->sps.log2_max_frame_num;
1504 int field_poc[2];
1505 Picture *cur = s->current_picture_ptr;
1506
1507 h->frame_num_offset= h->prev_frame_num_offset;
1508 if(h->frame_num < h->prev_frame_num)
1509 h->frame_num_offset += max_frame_num;
1510
1511 if(h->sps.poc_type==0){
1512 const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
1513
1514 if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
1515 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
1516 else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
1517 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
1518 else
1519 h->poc_msb = h->prev_poc_msb;
1520 //printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
1521 field_poc[0] =
1522 field_poc[1] = h->poc_msb + h->poc_lsb;
1523 if(s->picture_structure == PICT_FRAME)
1524 field_poc[1] += h->delta_poc_bottom;
1525 }else if(h->sps.poc_type==1){
1526 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
1527 int i;
1528
1529 if(h->sps.poc_cycle_length != 0)
1530 abs_frame_num = h->frame_num_offset + h->frame_num;
1531 else
1532 abs_frame_num = 0;
1533
1534 if(h->nal_ref_idc==0 && abs_frame_num > 0)
1535 abs_frame_num--;
1536
1537 expected_delta_per_poc_cycle = 0;
1538 for(i=0; i < h->sps.poc_cycle_length; i++)
1539 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
1540
1541 if(abs_frame_num > 0){
1542 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
1543 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
1544
1545 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
1546 for(i = 0; i <= frame_num_in_poc_cycle; i++)
1547 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
1548 } else
1549 expectedpoc = 0;
1550
1551 if(h->nal_ref_idc == 0)
1552 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
1553
1554 field_poc[0] = expectedpoc + h->delta_poc[0];
1555 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
1556
1557 if(s->picture_structure == PICT_FRAME)
1558 field_poc[1] += h->delta_poc[1];
1559 }else{
1560 int poc= 2*(h->frame_num_offset + h->frame_num);
1561
1562 if(!h->nal_ref_idc)
1563 poc--;
1564
1565 field_poc[0]= poc;
1566 field_poc[1]= poc;
1567 }
1568
1569 if(s->picture_structure != PICT_BOTTOM_FIELD)
1570 s->current_picture_ptr->field_poc[0]= field_poc[0];
1571 if(s->picture_structure != PICT_TOP_FIELD)
1572 s->current_picture_ptr->field_poc[1]= field_poc[1];
1573 cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
1574
1575 return 0;
1576 }
1577
1578
1579 /**
1580 * initialize scan tables
1581 */
1582 static void init_scan_tables(H264Context *h){
1583 int i;
1584 if(h->h264dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
1585 memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
1586 memcpy(h-> field_scan, field_scan, 16*sizeof(uint8_t));
1587 }else{
1588 for(i=0; i<16; i++){
1589 #define T(x) (x>>2) | ((x<<2) & 0xF)
1590 h->zigzag_scan[i] = T(zigzag_scan[i]);
1591 h-> field_scan[i] = T( field_scan[i]);
1592 #undef T
1593 }
1594 }
1595 if(h->h264dsp.h264_idct8_add == ff_h264_idct8_add_c){
1596 memcpy(h->zigzag_scan8x8, ff_zigzag_direct, 64*sizeof(uint8_t));
1597 memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
1598 memcpy(h->field_scan8x8, field_scan8x8, 64*sizeof(uint8_t));
1599 memcpy(h->field_scan8x8_cavlc, field_scan8x8_cavlc, 64*sizeof(uint8_t));
1600 }else{
1601 for(i=0; i<64; i++){
1602 #define T(x) (x>>3) | ((x&7)<<3)
1603 h->zigzag_scan8x8[i] = T(ff_zigzag_direct[i]);
1604 h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
1605 h->field_scan8x8[i] = T(field_scan8x8[i]);
1606 h->field_scan8x8_cavlc[i] = T(field_scan8x8_cavlc[i]);
1607 #undef T
1608 }
1609 }
1610 if(h->sps.transform_bypass){ //FIXME same ugly
1611 h->zigzag_scan_q0 = zigzag_scan;
1612 h->zigzag_scan8x8_q0 = ff_zigzag_direct;
1613 h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
1614 h->field_scan_q0 = field_scan;
1615 h->field_scan8x8_q0 = field_scan8x8;
1616 h->field_scan8x8_cavlc_q0 = field_scan8x8_cavlc;
1617 }else{
1618 h->zigzag_scan_q0 = h->zigzag_scan;
1619 h->zigzag_scan8x8_q0 = h->zigzag_scan8x8;
1620 h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
1621 h->field_scan_q0 = h->field_scan;
1622 h->field_scan8x8_q0 = h->field_scan8x8;
1623 h->field_scan8x8_cavlc_q0 = h->field_scan8x8_cavlc;
1624 }
1625 }
1626
1627 static void field_end(H264Context *h){
1628 MpegEncContext * const s = &h->s;
1629 AVCodecContext * const avctx= s->avctx;
1630 s->mb_y= 0;
1631
1632 s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
1633 s->current_picture_ptr->pict_type= s->pict_type;
1634
1635 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1636 ff_vdpau_h264_set_reference_frames(s);
1637
1638 if(!s->dropable) {
1639 ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1640 h->prev_poc_msb= h->poc_msb;
1641 h->prev_poc_lsb= h->poc_lsb;
1642 }
1643 h->prev_frame_num_offset= h->frame_num_offset;
1644 h->prev_frame_num= h->frame_num;
1645
1646 if (avctx->hwaccel) {
1647 if (avctx->hwaccel->end_frame(avctx) < 0)
1648 av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
1649 }
1650
1651 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1652 ff_vdpau_h264_picture_complete(s);
1653
1654 /*
1655 * FIXME: Error handling code does not seem to support interlaced
1656 * when slices span multiple rows
1657 * The ff_er_add_slice calls don't work right for bottom
1658 * fields; they cause massive erroneous error concealing
1659 * Error marking covers both fields (top and bottom).
1660 * This causes a mismatched s->error_count
1661 * and a bad error table. Further, the error count goes to
1662 * INT_MAX when called for bottom field, because mb_y is
1663 * past end by one (callers fault) and resync_mb_y != 0
1664 * causes problems for the first MB line, too.
1665 */
1666 if (!FIELD_PICTURE)
1667 ff_er_frame_end(s);
1668
1669 MPV_frame_end(s);
1670
1671 h->current_slice=0;
1672 }
1673
1674 /**
1675 * Replicates H264 "master" context to thread contexts.
1676 */
1677 static void clone_slice(H264Context *dst, H264Context *src)
1678 {
1679 memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset));
1680 dst->s.current_picture_ptr = src->s.current_picture_ptr;
1681 dst->s.current_picture = src->s.current_picture;
1682 dst->s.linesize = src->s.linesize;
1683 dst->s.uvlinesize = src->s.uvlinesize;
1684 dst->s.first_field = src->s.first_field;
1685
1686 dst->prev_poc_msb = src->prev_poc_msb;
1687 dst->prev_poc_lsb = src->prev_poc_lsb;
1688 dst->prev_frame_num_offset = src->prev_frame_num_offset;
1689 dst->prev_frame_num = src->prev_frame_num;
1690 dst->short_ref_count = src->short_ref_count;
1691
1692 memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref));
1693 memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref));
1694 memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
1695 memcpy(dst->ref_list, src->ref_list, sizeof(dst->ref_list));
1696
1697 memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff));
1698 memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff));
1699 }
1700
1701 /**
1702 * decodes a slice header.
1703 * This will also call MPV_common_init() and frame_start() as needed.
1704 *
1705 * @param h h264context
1706 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
1707 *
1708 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
1709 */
1710 static int decode_slice_header(H264Context *h, H264Context *h0){
1711 MpegEncContext * const s = &h->s;
1712 MpegEncContext * const s0 = &h0->s;
1713 unsigned int first_mb_in_slice;
1714 unsigned int pps_id;
1715 int num_ref_idx_active_override_flag;
1716 unsigned int slice_type, tmp, i, j;
1717 int default_ref_list_done = 0;
1718 int last_pic_structure;
1719
1720 s->dropable= h->nal_ref_idc == 0;
1721
1722 if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
1723 s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
1724 s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
1725 }else{
1726 s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
1727 s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
1728 }
1729
1730 first_mb_in_slice= get_ue_golomb(&s->gb);
1731
1732 if(first_mb_in_slice == 0){ //FIXME better field boundary detection
1733 if(h0->current_slice && FIELD_PICTURE){
1734 field_end(h);
1735 }
1736
1737 h0->current_slice = 0;
1738 if (!s0->first_field)
1739 s->current_picture_ptr= NULL;
1740 }
1741
1742 slice_type= get_ue_golomb_31(&s->gb);
1743 if(slice_type > 9){
1744 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);
1745 return -1;
1746 }
1747 if(slice_type > 4){
1748 slice_type -= 5;
1749 h->slice_type_fixed=1;
1750 }else
1751 h->slice_type_fixed=0;
1752
1753 slice_type= golomb_to_pict_type[ slice_type ];
1754 if (slice_type == FF_I_TYPE
1755 || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
1756 default_ref_list_done = 1;
1757 }
1758 h->slice_type= slice_type;
1759 h->slice_type_nos= slice_type & 3;
1760
1761 s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
1762
1763 pps_id= get_ue_golomb(&s->gb);
1764 if(pps_id>=MAX_PPS_COUNT){
1765 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
1766 return -1;
1767 }
1768 if(!h0->pps_buffers[pps_id]) {
1769 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
1770 return -1;
1771 }
1772 h->pps= *h0->pps_buffers[pps_id];
1773
1774 if(!h0->sps_buffers[h->pps.sps_id]) {
1775 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
1776 return -1;
1777 }
1778 h->sps = *h0->sps_buffers[h->pps.sps_id];
1779
1780 if(h == h0 && h->dequant_coeff_pps != pps_id){
1781 h->dequant_coeff_pps = pps_id;
1782 init_dequant_tables(h);
1783 }
1784
1785 s->mb_width= h->sps.mb_width;
1786 s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
1787
1788 h->b_stride= s->mb_width*4;
1789
1790 s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
1791 if(h->sps.frame_mbs_only_flag)
1792 s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
1793 else
1794 s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
1795
1796 if (s->context_initialized
1797 && ( s->width != s->avctx->width || s->height != s->avctx->height
1798 || av_cmp_q(h->sps.sar, s->avctx->sample_aspect_ratio))) {
1799 if(h != h0)
1800 return -1; // width / height changed during parallelized decoding
1801 free_tables(h);
1802 flush_dpb(s->avctx);
1803 MPV_common_end(s);
1804 }
1805 if (!s->context_initialized) {
1806 if(h != h0)
1807 return -1; // we cant (re-)initialize context during parallel decoding
1808
1809 avcodec_set_dimensions(s->avctx, s->width, s->height);
1810 s->avctx->sample_aspect_ratio= h->sps.sar;
1811 if(!s->avctx->sample_aspect_ratio.den)
1812 s->avctx->sample_aspect_ratio.den = 1;
1813
1814 if(h->sps.video_signal_type_present_flag){
1815 s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
1816 if(h->sps.colour_description_present_flag){
1817 s->avctx->color_primaries = h->sps.color_primaries;
1818 s->avctx->color_trc = h->sps.color_trc;
1819 s->avctx->colorspace = h->sps.colorspace;
1820 }
1821 }
1822
1823 if(h->sps.timing_info_present_flag){
1824 int64_t den= h->sps.time_scale;
1825 if(h->x264_build < 44U)
1826 den *= 2;
1827 av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
1828 h->sps.num_units_in_tick, den, 1<<30);
1829 }
1830 s->avctx->pix_fmt = s->avctx->get_format(s->avctx, s->avctx->codec->pix_fmts);
1831 s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
1832
1833 if (MPV_common_init(s) < 0)
1834 return -1;
1835 s->first_field = 0;
1836 h->prev_interlaced_frame = 1;
1837
1838 init_scan_tables(h);
1839 ff_h264_alloc_tables(h);
1840
1841 for(i = 1; i < s->avctx->thread_count; i++) {
1842 H264Context *c;
1843 c = h->thread_context[i] = av_malloc(sizeof(H264Context));
1844 memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
1845 memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
1846 c->sps = h->sps;
1847 c->pps = h->pps;
1848 init_scan_tables(c);
1849 clone_tables(c, h, i);
1850 }
1851
1852 for(i = 0; i < s->avctx->thread_count; i++)
1853 if(context_init(h->thread_context[i]) < 0)
1854 return -1;
1855 }
1856
1857 h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
1858
1859 h->mb_mbaff = 0;
1860 h->mb_aff_frame = 0;
1861 last_pic_structure = s0->picture_structure;
1862 if(h->sps.frame_mbs_only_flag){
1863 s->picture_structure= PICT_FRAME;
1864 }else{
1865 if(get_bits1(&s->gb)) { //field_pic_flag
1866 s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
1867 } else {
1868 s->picture_structure= PICT_FRAME;
1869 h->mb_aff_frame = h->sps.mb_aff;
1870 }
1871 }
1872 h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
1873
1874 if(h0->current_slice == 0){
1875 while(h->frame_num != h->prev_frame_num &&
1876 h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
1877 av_log(NULL, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
1878 if (ff_h264_frame_start(h) < 0)
1879 return -1;
1880 h->prev_frame_num++;
1881 h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
1882 s->current_picture_ptr->frame_num= h->prev_frame_num;
1883 ff_h264_execute_ref_pic_marking(h, NULL, 0);
1884 }
1885
1886 /* See if we have a decoded first field looking for a pair... */
1887 if (s0->first_field) {
1888 assert(s0->current_picture_ptr);
1889 assert(s0->current_picture_ptr->data[0]);
1890 assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
1891
1892 /* figure out if we have a complementary field pair */
1893 if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
1894 /*
1895 * Previous field is unmatched. Don't display it, but let it
1896 * remain for reference if marked as such.
1897 */
1898 s0->current_picture_ptr = NULL;
1899 s0->first_field = FIELD_PICTURE;
1900
1901 } else {
1902 if (h->nal_ref_idc &&
1903 s0->current_picture_ptr->reference &&
1904 s0->current_picture_ptr->frame_num != h->frame_num) {
1905 /*
1906 * This and previous field were reference, but had
1907 * different frame_nums. Consider this field first in
1908 * pair. Throw away previous field except for reference
1909 * purposes.
1910 */
1911 s0->first_field = 1;
1912 s0->current_picture_ptr = NULL;
1913
1914 } else {
1915 /* Second field in complementary pair */
1916 s0->first_field = 0;
1917 }
1918 }
1919
1920 } else {
1921 /* Frame or first field in a potentially complementary pair */
1922 assert(!s0->current_picture_ptr);
1923 s0->first_field = FIELD_PICTURE;
1924 }
1925
1926 if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) {
1927 s0->first_field = 0;
1928 return -1;
1929 }
1930 }
1931 if(h != h0)
1932 clone_slice(h, h0);
1933
1934 s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
1935
1936 assert(s->mb_num == s->mb_width * s->mb_height);
1937 if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
1938 first_mb_in_slice >= s->mb_num){
1939 av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1940 return -1;
1941 }
1942 s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
1943 s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
1944 if (s->picture_structure == PICT_BOTTOM_FIELD)
1945 s->resync_mb_y = s->mb_y = s->mb_y + 1;
1946 assert(s->mb_y < s->mb_height);
1947
1948 if(s->picture_structure==PICT_FRAME){
1949 h->curr_pic_num= h->frame_num;
1950 h->max_pic_num= 1<< h->sps.log2_max_frame_num;
1951 }else{
1952 h->curr_pic_num= 2*h->frame_num + 1;
1953 h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
1954 }
1955
1956 if(h->nal_unit_type == NAL_IDR_SLICE){
1957 get_ue_golomb(&s->gb); /* idr_pic_id */
1958 }
1959
1960 if(h->sps.poc_type==0){
1961 h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
1962
1963 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
1964 h->delta_poc_bottom= get_se_golomb(&s->gb);
1965 }
1966 }
1967
1968 if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
1969 h->delta_poc[0]= get_se_golomb(&s->gb);
1970
1971 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
1972 h->delta_poc[1]= get_se_golomb(&s->gb);
1973 }
1974
1975 init_poc(h);
1976
1977 if(h->pps.redundant_pic_cnt_present){
1978 h->redundant_pic_count= get_ue_golomb(&s->gb);
1979 }
1980
1981 //set defaults, might be overridden a few lines later
1982 h->ref_count[0]= h->pps.ref_count[0];
1983 h->ref_count[1]= h->pps.ref_count[1];
1984
1985 if(h->slice_type_nos != FF_I_TYPE){
1986 if(h->slice_type_nos == FF_B_TYPE){
1987 h->direct_spatial_mv_pred= get_bits1(&s->gb);
1988 }
1989 num_ref_idx_active_override_flag= get_bits1(&s->gb);
1990
1991 if(num_ref_idx_active_override_flag){
1992 h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
1993 if(h->slice_type_nos==FF_B_TYPE)
1994 h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
1995
1996 if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
1997 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
1998 h->ref_count[0]= h->ref_count[1]= 1;
1999 return -1;
2000 }
2001 }
2002 if(h->slice_type_nos == FF_B_TYPE)
2003 h->list_count= 2;
2004 else
2005 h->list_count= 1;
2006 }else
2007 h->list_count= 0;
2008
2009 if(!default_ref_list_done){
2010 ff_h264_fill_default_ref_list(h);
2011 }
2012
2013 if(h->slice_type_nos!=FF_I_TYPE && ff_h264_decode_ref_pic_list_reordering(h) < 0)
2014 return -1;
2015
2016 if(h->slice_type_nos!=FF_I_TYPE){
2017 s->last_picture_ptr= &h->ref_list[0][0];
2018 ff_copy_picture(&s->last_picture, s->last_picture_ptr);
2019 }
2020 if(h->slice_type_nos==FF_B_TYPE){
2021 s->next_picture_ptr= &h->ref_list[1][0];
2022 ff_copy_picture(&s->next_picture, s->next_picture_ptr);
2023 }
2024
2025 if( (h->pps.weighted_pred && h->slice_type_nos == FF_P_TYPE )
2026 || (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
2027 pred_weight_table(h);
2028 else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE){
2029 implicit_weight_table(h, -1);
2030 }else {
2031 h->use_weight = 0;
2032 for (i = 0; i < 2; i++) {
2033 h->luma_weight_flag[i] = 0;
2034 h->chroma_weight_flag[i] = 0;
2035 }
2036 }
2037
2038 if(h->nal_ref_idc)
2039 ff_h264_decode_ref_pic_marking(h0, &s->gb);
2040
2041 if(FRAME_MBAFF){
2042 ff_h264_fill_mbaff_ref_list(h);
2043
2044 if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE){
2045 implicit_weight_table(h, 0);
2046 implicit_weight_table(h, 1);
2047 }
2048 }
2049
2050 if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
2051 ff_h264_direct_dist_scale_factor(h);
2052 ff_h264_direct_ref_list_init(h);
2053
2054 if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
2055 tmp = get_ue_golomb_31(&s->gb);
2056 if(tmp > 2){
2057 av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
2058 return -1;
2059 }
2060 h->cabac_init_idc= tmp;
2061 }
2062
2063 h->last_qscale_diff = 0;
2064 tmp = h->pps.init_qp + get_se_golomb(&s->gb);
2065 if(tmp>51){
2066 av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
2067 return -1;
2068 }
2069 s->qscale= tmp;
2070 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2071 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2072 //FIXME qscale / qp ... stuff
2073 if(h->slice_type == FF_SP_TYPE){
2074 get_bits1(&s->gb); /* sp_for_switch_flag */
2075 }
2076 if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
2077 get_se_golomb(&s->gb); /* slice_qs_delta */
2078 }
2079
2080 h->deblocking_filter = 1;
2081 h->slice_alpha_c0_offset = 52;
2082 h->slice_beta_offset = 52;
2083 if( h->pps.deblocking_filter_parameters_present ) {
2084 tmp= get_ue_golomb_31(&s->gb);
2085 if(tmp > 2){
2086 av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
2087 return -1;
2088 }
2089 h->deblocking_filter= tmp;
2090 if(h->deblocking_filter < 2)
2091 h->deblocking_filter^= 1; // 1<->0
2092
2093 if( h->deblocking_filter ) {
2094 h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
2095 h->slice_beta_offset += get_se_golomb(&s->gb) << 1;
2096 if( h->slice_alpha_c0_offset > 104U
2097 || h->slice_beta_offset > 104U){
2098 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);
2099 return -1;
2100 }
2101 }
2102 }
2103
2104 if( s->avctx->skip_loop_filter >= AVDISCARD_ALL
2105 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
2106 ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR && h->slice_type_nos == FF_B_TYPE)
2107 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2108 h->deblocking_filter= 0;
2109
2110 if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
2111 if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
2112 /* Cheat slightly for speed:
2113 Do not bother to deblock across slices. */
2114 h->deblocking_filter = 2;
2115 } else {
2116 h0->max_contexts = 1;
2117 if(!h0->single_decode_warning) {
2118 av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
2119 h0->single_decode_warning = 1;
2120 }
2121 if(h != h0)
2122 return 1; // deblocking switched inside frame
2123 }
2124 }
2125 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]);
2126
2127 #if 0 //FMO
2128 if( h->pps.num_slice_groups > 1 && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
2129 slice_group_change_cycle= get_bits(&s->gb, ?);
2130 #endif
2131
2132 h0->last_slice_type = slice_type;
2133 h->slice_num = ++h0->current_slice;
2134 if(h->slice_num >= MAX_SLICES){
2135 av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
2136 }
2137
2138 for(j=0; j<2; j++){
2139 int id_list[16];
2140 int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
2141 for(i=0; i<16; i++){
2142 id_list[i]= 60;
2143 if(h->ref_list[j][i].data[0]){
2144 int k;
2145 uint8_t *base= h->ref_list[j][i].base[0];
2146 for(k=0; k<h->short_ref_count; k++)
2147 if(h->short_ref[k]->base[0] == base){
2148 id_list[i]= k;
2149 break;
2150 }
2151 for(k=0; k<h->long_ref_count; k++)
2152 if(h->long_ref[k] && h->long_ref[k]->base[0] == base){
2153 id_list[i]= h->short_ref_count + k;
2154 break;
2155 }
2156 }
2157 }
2158
2159 ref2frm[0]=
2160 ref2frm[1]= -1;
2161 for(i=0; i<16; i++)
2162 ref2frm[i+2]= 4*id_list[i]
2163 +(h->ref_list[j][i].reference&3);
2164 ref2frm[18+0]=
2165 ref2frm[18+1]= -1;
2166 for(i=16; i<48; i++)
2167 ref2frm[i+4]= 4*id_list[(i-16)>>1]
2168 +(h->ref_list[j][i].reference&3);
2169 }
2170
2171 h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
2172 h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
2173
2174 s->avctx->refs= h->sps.ref_frame_count;
2175
2176 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
2177 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",
2178 h->slice_num,
2179 (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
2180 first_mb_in_slice,
2181 av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
2182 pps_id, h->frame_num,
2183 s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
2184 h->ref_count[0], h->ref_count[1],
2185 s->qscale,
2186 h->deblocking_filter, h->slice_alpha_c0_offset/2-26, h->slice_beta_offset/2-26,
2187 h->use_weight,
2188 h->use_weight==1 && h->use_weight_chroma ? "c" : "",
2189 h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
2190 );
2191 }
2192
2193 return 0;
2194 }
2195
2196 int ff_h264_get_slice_type(const H264Context *h)
2197 {
2198 switch (h->slice_type) {
2199 case FF_P_TYPE: return 0;
2200 case FF_B_TYPE: return 1;
2201 case FF_I_TYPE: return 2;
2202 case FF_SP_TYPE: return 3;
2203 case FF_SI_TYPE: return 4;
2204 default: return -1;
2205 }
2206 }
2207
2208 static void loop_filter(H264Context *h){
2209 MpegEncContext * const s = &h->s;
2210 uint8_t *dest_y, *dest_cb, *dest_cr;
2211 int linesize, uvlinesize, mb_x, mb_y;
2212 const int end_mb_y= s->mb_y + FRAME_MBAFF;
2213 const int old_slice_type= h->slice_type;
2214
2215 if(h->deblocking_filter) {
2216 for(mb_x= 0; mb_x<s->mb_width; mb_x++){
2217 for(mb_y=end_mb_y - FRAME_MBAFF; mb_y<= end_mb_y; mb_y++){
2218 int mb_xy, mb_type;
2219 mb_xy = h->mb_xy = mb_x + mb_y*s->mb_stride;
2220 h->slice_num= h->slice_table[mb_xy];
2221 mb_type= s->current_picture.mb_type[mb_xy];
2222 h->list_count= h->list_counts[mb_xy];
2223
2224 if(FRAME_MBAFF)
2225 h->mb_mbaff = h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2226
2227 s->mb_x= mb_x;
2228 s->mb_y= mb_y;
2229 dest_y = s->current_picture.data[0] + (mb_x + mb_y * s->linesize ) * 16;
2230 dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
2231 dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
2232 //FIXME simplify above
2233
2234 if (MB_FIELD) {
2235 linesize = h->mb_linesize = s->linesize * 2;
2236 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2237 if(mb_y&1){ //FIXME move out of this function?
2238 dest_y -= s->linesize*15;
2239 dest_cb-= s->uvlinesize*7;
2240 dest_cr-= s->uvlinesize*7;
2241 }
2242 } else {
2243 linesize = h->mb_linesize = s->linesize;
2244 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2245 }
2246 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0);
2247 if(fill_filter_caches(h, mb_type))
2248 continue;
2249 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2250 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2251
2252 if (FRAME_MBAFF) {
2253 ff_h264_filter_mb (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2254 } else {
2255 ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2256 }
2257 }
2258 }
2259 }
2260 h->slice_type= old_slice_type;
2261 s->mb_x= 0;
2262 s->mb_y= end_mb_y - FRAME_MBAFF;
2263 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2264 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2265 }
2266
2267 static void predict_field_decoding_flag(H264Context *h){
2268 MpegEncContext * const s = &h->s;
2269 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2270 int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
2271 ? s->current_picture.mb_type[mb_xy-1]
2272 : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
2273 ? s->current_picture.mb_type[mb_xy-s->mb_stride]
2274 : 0;
2275 h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2276 }
2277
2278 static int decode_slice(struct AVCodecContext *avctx, void *arg){
2279 H264Context *h = *(void**)arg;
2280 MpegEncContext * const s = &h->s;
2281 const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
2282
2283 s->mb_skip_run= -1;
2284
2285 h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
2286 (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
2287
2288 if( h->pps.cabac ) {
2289 /* realign */
2290 align_get_bits( &s->gb );
2291
2292 /* init cabac */
2293 ff_init_cabac_states( &h->cabac);
2294 ff_init_cabac_decoder( &h->cabac,
2295 s->gb.buffer + get_bits_count(&s->gb)/8,
2296 (get_bits_left(&s->gb) + 7)/8);
2297
2298 ff_h264_init_cabac_states(h);
2299
2300 for(;;){
2301 //START_TIMER
2302 int ret = ff_h264_decode_mb_cabac(h);
2303 int eos;
2304 //STOP_TIMER("decode_mb_cabac")
2305
2306 if(ret>=0) ff_h264_hl_decode_mb(h);
2307
2308 if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
2309 s->mb_y++;
2310
2311 ret = ff_h264_decode_mb_cabac(h);
2312
2313 if(ret>=0) ff_h264_hl_decode_mb(h);
2314 s->mb_y--;
2315 }
2316 eos = get_cabac_terminate( &h->cabac );
2317
2318 if((s->workaround_bugs & FF_BUG_TRUNCATED) && h->cabac.bytestream > h->cabac.bytestream_end + 2){
2319 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);
2320 return 0;
2321 }
2322 if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
2323 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);
2324 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);
2325 return -1;
2326 }
2327
2328 if( ++s->mb_x >= s->mb_width ) {
2329 s->mb_x = 0;
2330 loop_filter(h);
2331 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2332 ++s->mb_y;
2333 if(FIELD_OR_MBAFF_PICTURE) {
2334 ++s->mb_y;
2335 if(FRAME_MBAFF && s->mb_y < s->mb_height)
2336 predict_field_decoding_flag(h);
2337 }
2338 }
2339
2340 if( eos || s->mb_y >= s->mb_height ) {
2341 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2342 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);
2343 return 0;
2344 }
2345 }
2346
2347 } else {
2348 for(;;){
2349 int ret = ff_h264_decode_mb_cavlc(h);
2350
2351 if(ret>=0) ff_h264_hl_decode_mb(h);
2352
2353 if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
2354 s->mb_y++;
2355 ret = ff_h264_decode_mb_cavlc(h);
2356
2357 if(ret>=0) ff_h264_hl_decode_mb(h);
2358 s->mb_y--;
2359 }
2360
2361 if(ret<0){
2362 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2363 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);
2364
2365 return -1;
2366 }
2367
2368 if(++s->mb_x >= s->mb_width){
2369 s->mb_x=0;
2370 loop_filter(h);
2371 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2372 ++s->mb_y;
2373 if(FIELD_OR_MBAFF_PICTURE) {
2374 ++s->mb_y;
2375 if(FRAME_MBAFF && s->mb_y < s->mb_height)
2376 predict_field_decoding_flag(h);
2377 }
2378 if(s->mb_y >= s->mb_height){
2379 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2380
2381 if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
2382 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);
2383
2384 return 0;
2385 }else{
2386 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);
2387
2388 return -1;
2389 }
2390 }
2391 }
2392
2393 if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
2394 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2395 if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
2396 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);
2397
2398 return 0;
2399 }else{
2400 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);
2401
2402 return -1;
2403 }
2404 }
2405 }
2406 }
2407
2408 #if 0
2409 for(;s->mb_y < s->mb_height; s->mb_y++){
2410 for(;s->mb_x < s->mb_width; s->mb_x++){
2411 int ret= decode_mb(h);
2412
2413 ff_h264_hl_decode_mb(h);
2414
2415 if(ret<0){
2416 av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2417 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);
2418
2419 return -1;
2420 }
2421
2422 if(++s->mb_x >= s->mb_width){
2423 s->mb_x=0;
2424 if(++s->mb_y >= s->mb_height){
2425 if(get_bits_count(s->gb) == s->gb.size_in_bits){
2426 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);
2427
2428 return 0;
2429 }else{
2430 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);
2431
2432 return -1;
2433 }
2434 }
2435 }
2436
2437 if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
2438 if(get_bits_count(s->gb) == s->gb.size_in_bits){
2439 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);
2440
2441 return 0;
2442 }else{
2443 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);
2444
2445 return -1;
2446 }
2447 }
2448 }
2449 s->mb_x=0;
2450 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2451 }
2452 #endif
2453 return -1; //not reached
2454 }
2455
2456 /**
2457 * Call decode_slice() for each context.
2458 *
2459 * @param h h264 master context
2460 * @param context_count number of contexts to execute
2461 */
2462 static void execute_decode_slices(H264Context *h, int context_count){
2463 MpegEncContext * const s = &h->s;
2464 AVCodecContext * const avctx= s->avctx;
2465 H264Context *hx;
2466 int i;
2467
2468 if (s->avctx->hwaccel)
2469 return;
2470 if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2471 return;
2472 if(context_count == 1) {
2473 decode_slice(avctx, &h);
2474 } else {
2475 for(i = 1; i < context_count; i++) {
2476 hx = h->thread_context[i];
2477 hx->s.error_recognition = avctx->error_recognition;
2478 hx->s.error_count = 0;
2479 }
2480
2481 avctx->execute(avctx, (void *)decode_slice,
2482 h->thread_context, NULL, context_count, sizeof(void*));
2483
2484 /* pull back stuff from slices to master context */
2485 hx = h->thread_context[context_count - 1];
2486 s->mb_x = hx->s.mb_x;
2487 s->mb_y = hx->s.mb_y;
2488 s->dropable = hx->s.dropable;
2489 s->picture_structure = hx->s.picture_structure;
2490 for(i = 1; i < context_count; i++)
2491 h->s.error_count += h->thread_context[i]->s.error_count;
2492 }
2493 }
2494
2495
2496 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
2497 MpegEncContext * const s = &h->s;
2498 AVCodecContext * const avctx= s->avctx;
2499 int buf_index=0;
2500 H264Context *hx; ///< thread context
2501 int context_count = 0;
2502 int next_avc= h->is_avc ? 0 : buf_size;
2503
2504 h->max_contexts = avctx->thread_count;
2505 #if 0
2506 int i;
2507 for(i=0; i<50; i++){
2508 av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
2509 }
2510 #endif
2511 if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
2512 h->current_slice = 0;
2513 if (!s->first_field)
2514 s->current_picture_ptr= NULL;
2515 ff_h264_reset_sei(h);
2516 }
2517
2518 for(;;){
2519 int consumed;
2520 int dst_length;
2521 int bit_length;
2522 const uint8_t *ptr;
2523 int i, nalsize = 0;
2524 int err;
2525
2526 if(buf_index >= next_avc) {
2527 if(buf_index >= buf_size) break;
2528 nalsize = 0;
2529 for(i = 0; i < h->nal_length_size; i++)
2530 nalsize = (nalsize << 8) | buf[buf_index++];
2531 if(nalsize <= 1 || nalsize > buf_size - buf_index){
2532 if(nalsize == 1){
2533 buf_index++;
2534 continue;
2535 }else{
2536 av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
2537 break;
2538 }
2539 }
2540 next_avc= buf_index + nalsize;
2541 } else {
2542 // start code prefix search
2543 for(; buf_index + 3 < next_avc; buf_index++){
2544 // This should always succeed in the first iteration.
2545 if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
2546 break;
2547 }
2548
2549 if(buf_index+3 >= buf_size) break;
2550
2551 buf_index+=3;
2552 if(buf_index >= next_avc) continue;
2553 }
2554
2555 hx = h->thread_context[context_count];
2556
2557 ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index);
2558 if (ptr==NULL || dst_length < 0){
2559 return -1;
2560 }
2561 i= buf_index + consumed;
2562 if((s->workaround_bugs & FF_BUG_AUTODETECT) && i+3<next_avc &&
2563 buf[i]==0x00 && buf[i+1]==0x00 && buf[i+2]==0x01 && buf[i+3]==0xE0)
2564 s->workaround_bugs |= FF_BUG_TRUNCATED;
2565
2566 if(!(s->workaround_bugs & FF_BUG_TRUNCATED)){
2567 while(ptr[dst_length - 1] == 0 && dst_length > 0)
2568 dst_length--;
2569 }
2570 bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
2571
2572 if(s->avctx->debug&FF_DEBUG_STARTCODE){
2573 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);
2574 }
2575
2576 if (h->is_avc && (nalsize != consumed) && nalsize){
2577 av_log(h->s.avctx, AV_LOG_DEBUG, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
2578 }
2579
2580 buf_index += consumed;
2581
2582 if( (s->hurry_up == 1 && h->nal_ref_idc == 0) //FIXME do not discard SEI id
2583 ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2584 continue;
2585
2586 again:
2587 err = 0;
2588 switch(hx->nal_unit_type){
2589 case NAL_IDR_SLICE:
2590 if (h->nal_unit_type != NAL_IDR_SLICE) {
2591 av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
2592 return -1;
2593 }
2594 idr(h); //FIXME ensure we don't loose some frames if there is reordering
2595 case NAL_SLICE:
2596 init_get_bits(&hx->s.gb, ptr, bit_length);
2597 hx->intra_gb_ptr=
2598 hx->inter_gb_ptr= &hx->s.gb;
2599 hx->s.data_partitioning = 0;
2600
2601 if((err = decode_slice_header(hx, h)))
2602 break;
2603
2604 avctx->profile = hx->sps.profile_idc;
2605 avctx->level = hx->sps.level_idc;
2606
2607 if (h->current_slice == 1) {
2608 if (s->avctx->hwaccel && s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
2609 return -1;
2610 if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2611 ff_vdpau_h264_picture_start(s);
2612 }
2613
2614 s->current_picture_ptr->key_frame |=
2615 (hx->nal_unit_type == NAL_IDR_SLICE) ||
2616 (h->sei_recovery_frame_cnt >= 0);
2617 if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5
2618 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2619 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=FF_B_TYPE)
2620 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2621 && avctx->skip_frame < AVDISCARD_ALL){
2622 if(avctx->hwaccel) {
2623 if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0)
2624 return -1;
2625 }else
2626 if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
2627 static const uint8_t start_code[] = {0x00, 0x00, 0x01};
2628 ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
2629 ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
2630 }else
2631 context_count++;
2632 }
2633 break;
2634 case NAL_DPA:
2635 init_get_bits(&hx->s.gb, ptr, bit_length);
2636 hx->intra_gb_ptr=
2637 hx->inter_gb_ptr= NULL;
2638
2639 if ((err = decode_slice_header(hx, h)) < 0)
2640 break;
2641
2642 avctx->profile = hx->sps.profile_idc;
2643 avctx->level = hx->sps.level_idc;
2644
2645 hx->s.data_partitioning = 1;
2646
2647 break;
2648 case NAL_DPB:
2649 init_get_bits(&hx->intra_gb, ptr, bit_length);
2650 hx->intra_gb_ptr= &hx->intra_gb;
2651 break;
2652 case NAL_DPC:
2653 init_get_bits(&hx->inter_gb, ptr, bit_length);
2654 hx->inter_gb_ptr= &hx->inter_gb;
2655
2656 if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
2657 && s->context_initialized
2658 && s->hurry_up < 5
2659 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2660 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=FF_B_TYPE)
2661 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2662 && avctx->skip_frame < AVDISCARD_ALL)
2663 context_count++;
2664 break;
2665 case NAL_SEI:
2666 init_get_bits(&s->gb, ptr, bit_length);
2667 ff_h264_decode_sei(h);
2668 break;
2669 case NAL_SPS:
2670 init_get_bits(&s->gb, ptr, bit_length);
2671 ff_h264_decode_seq_parameter_set(h);
2672
2673 if(s->flags& CODEC_FLAG_LOW_DELAY)
2674 s->low_delay=1;
2675
2676 if(avctx->has_b_frames < 2)
2677 avctx->has_b_frames= !s->low_delay;
2678 break;
2679 case NAL_PPS:
2680 init_get_bits(&s->gb, ptr, bit_length);
2681
2682 ff_h264_decode_picture_parameter_set(h, bit_length);
2683
2684 break;
2685 case NAL_AUD:
2686 case NAL_END_SEQUENCE:
2687 case NAL_END_STREAM:
2688 case NAL_FILLER_DATA:
2689 case NAL_SPS_EXT:
2690 case NAL_AUXILIARY_SLICE:
2691 break;
2692 default:
2693 av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", hx->nal_unit_type, bit_length);
2694 }
2695
2696 if(context_count == h->max_contexts) {
2697 execute_decode_slices(h, context_count);
2698 context_count = 0;
2699 }
2700
2701 if (err < 0)
2702 av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
2703 else if(err == 1) {
2704 /* Slice could not be decoded in parallel mode, copy down
2705 * NAL unit stuff to context 0 and restart. Note that
2706 * rbsp_buffer is not transferred, but since we no longer
2707 * run in parallel mode this should not be an issue. */
2708 h->nal_unit_type = hx->nal_unit_type;
2709 h->nal_ref_idc = hx->nal_ref_idc;
2710 hx = h;
2711 goto again;
2712 }
2713 }
2714 if(context_count)
2715 execute_decode_slices(h, context_count);
2716 return buf_index;
2717 }
2718
2719 /**
2720 * returns the number of bytes consumed for building the current frame
2721 */
2722 static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
2723 if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
2724 if(pos+10>buf_size) pos=buf_size; // oops ;)
2725
2726 return pos;
2727 }
2728
2729 static int decode_frame(AVCodecContext *avctx,
2730 void *data, int *data_size,
2731 AVPacket *avpkt)
2732 {
2733 const uint8_t *buf = avpkt->data;
2734 int buf_size = avpkt->size;
2735 H264Context *h = avctx->priv_data;
2736 MpegEncContext *s = &h->s;
2737 AVFrame *pict = data;
2738 int buf_index;
2739
2740 s->flags= avctx->flags;
2741 s->flags2= avctx->flags2;
2742
2743 /* end of stream, output what is still in the buffers */
2744 if (buf_size == 0) {
2745 Picture *out;
2746 int i, out_idx;
2747
2748 //FIXME factorize this with the output code below
2749 out = h->delayed_pic[0];
2750 out_idx = 0;
2751 for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2752 if(h->delayed_pic[i]->poc < out->poc){
2753 out = h->delayed_pic[i];
2754 out_idx = i;
2755 }
2756
2757 for(i=out_idx; h->delayed_pic[i]; i++)
2758 h->delayed_pic[i] = h->delayed_pic[i+1];
2759
2760 if(out){
2761 *data_size = sizeof(AVFrame);
2762 *pict= *(AVFrame*)out;
2763 }
2764
2765 return 0;
2766 }
2767
2768 buf_index=decode_nal_units(h, buf, buf_size);
2769 if(buf_index < 0)