247dbb29b84648cd289c6a112f6c428ed6901eac
[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
24 * H.264 / AVC / MPEG4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
26 */
27
28 #include "libavcore/imgutils.h"
29 #include "internal.h"
30 #include "dsputil.h"
31 #include "avcodec.h"
32 #include "mpegvideo.h"
33 #include "h264.h"
34 #include "h264data.h"
35 #include "h264_mvpred.h"
36 #include "h264_parser.h"
37 #include "golomb.h"
38 #include "mathops.h"
39 #include "rectangle.h"
40 #include "vdpau_internal.h"
41 #include "libavutil/avassert.h"
42
43 #include "cabac.h"
44
45 //#undef NDEBUG
46 #include <assert.h>
47
48 static const uint8_t rem6[52]={
49 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,
50 };
51
52 static const uint8_t div6[52]={
53 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,
54 };
55
56 static const enum PixelFormat hwaccel_pixfmt_list_h264_jpeg_420[] = {
57 PIX_FMT_DXVA2_VLD,
58 PIX_FMT_VAAPI_VLD,
59 PIX_FMT_YUVJ420P,
60 PIX_FMT_NONE
61 };
62
63 void ff_h264_write_back_intra_pred_mode(H264Context *h){
64 int8_t *mode= h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
65
66 AV_COPY32(mode, h->intra4x4_pred_mode_cache + 4 + 8*4);
67 mode[4]= h->intra4x4_pred_mode_cache[7+8*3];
68 mode[5]= h->intra4x4_pred_mode_cache[7+8*2];
69 mode[6]= h->intra4x4_pred_mode_cache[7+8*1];
70 }
71
72 /**
73 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
74 */
75 int ff_h264_check_intra4x4_pred_mode(H264Context *h){
76 MpegEncContext * const s = &h->s;
77 static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
78 static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
79 int i;
80
81 if(!(h->top_samples_available&0x8000)){
82 for(i=0; i<4; i++){
83 int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
84 if(status<0){
85 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);
86 return -1;
87 } else if(status){
88 h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
89 }
90 }
91 }
92
93 if((h->left_samples_available&0x8888)!=0x8888){
94 static const int mask[4]={0x8000,0x2000,0x80,0x20};
95 for(i=0; i<4; i++){
96 if(!(h->left_samples_available&mask[i])){
97 int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
98 if(status<0){
99 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);
100 return -1;
101 } else if(status){
102 h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
103 }
104 }
105 }
106 }
107
108 return 0;
109 } //FIXME cleanup like ff_h264_check_intra_pred_mode
110
111 /**
112 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
113 */
114 int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
115 MpegEncContext * const s = &h->s;
116 static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
117 static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
118
119 if(mode > 6U) {
120 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);
121 return -1;
122 }
123
124 if(!(h->top_samples_available&0x8000)){
125 mode= top[ mode ];
126 if(mode<0){
127 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);
128 return -1;
129 }
130 }
131
132 if((h->left_samples_available&0x8080) != 0x8080){
133 mode= left[ mode ];
134 if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
135 mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
136 }
137 if(mode<0){
138 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);
139 return -1;
140 }
141 }
142
143 return mode;
144 }
145
146 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
147 int i, si, di;
148 uint8_t *dst;
149 int bufidx;
150
151 // src[0]&0x80; //forbidden bit
152 h->nal_ref_idc= src[0]>>5;
153 h->nal_unit_type= src[0]&0x1F;
154
155 src++; length--;
156 #if 0
157 for(i=0; i<length; i++)
158 printf("%2X ", src[i]);
159 #endif
160
161 #if HAVE_FAST_UNALIGNED
162 # if HAVE_FAST_64BIT
163 # define RS 7
164 for(i=0; i+1<length; i+=9){
165 if(!((~AV_RN64A(src+i) & (AV_RN64A(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
166 # else
167 # define RS 3
168 for(i=0; i+1<length; i+=5){
169 if(!((~AV_RN32A(src+i) & (AV_RN32A(src+i) - 0x01000101U)) & 0x80008080U))
170 # endif
171 continue;
172 if(i>0 && !src[i]) i--;
173 while(src[i]) i++;
174 #else
175 # define RS 0
176 for(i=0; i+1<length; i+=2){
177 if(src[i]) continue;
178 if(i>0 && src[i-1]==0) i--;
179 #endif
180 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
181 if(src[i+2]!=3){
182 /* startcode, so we must be past the end */
183 length=i;
184 }
185 break;
186 }
187 i-= RS;
188 }
189
190 if(i>=length-1){ //no escaped 0
191 *dst_length= length;
192 *consumed= length+1; //+1 for the header
193 return src;
194 }
195
196 bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
197 av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
198 dst= h->rbsp_buffer[bufidx];
199
200 if (dst == NULL){
201 return NULL;
202 }
203
204 //printf("decoding esc\n");
205 memcpy(dst, src, i);
206 si=di=i;
207 while(si+2<length){
208 //remove escapes (very rare 1:2^22)
209 if(src[si+2]>3){
210 dst[di++]= src[si++];
211 dst[di++]= src[si++];
212 }else if(src[si]==0 && src[si+1]==0){
213 if(src[si+2]==3){ //escape
214 dst[di++]= 0;
215 dst[di++]= 0;
216 si+=3;
217 continue;
218 }else //next start code
219 goto nsc;
220 }
221
222 dst[di++]= src[si++];
223 }
224 while(si<length)
225 dst[di++]= src[si++];
226 nsc:
227
228 memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
229
230 *dst_length= di;
231 *consumed= si + 1;//+1 for the header
232 //FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
233 return dst;
234 }
235
236 int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
237 int v= *src;
238 int r;
239
240 tprintf(h->s.avctx, "rbsp trailing %X\n", v);
241
242 for(r=1; r<9; r++){
243 if(v&1) return r;
244 v>>=1;
245 }
246 return 0;
247 }
248
249 /**
250 * IDCT transforms the 16 dc values and dequantizes them.
251 * @param qp quantization parameter
252 */
253 static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
254 #define stride 16
255 int i;
256 int temp[16]; //FIXME check if this is a good idea
257 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
258 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
259
260 //memset(block, 64, 2*256);
261 //return;
262 for(i=0; i<4; i++){
263 const int offset= y_offset[i];
264 const int z0= block[offset+stride*0] + block[offset+stride*4];
265 const int z1= block[offset+stride*0] - block[offset+stride*4];
266 const int z2= block[offset+stride*1] - block[offset+stride*5];
267 const int z3= block[offset+stride*1] + block[offset+stride*5];
268
269 temp[4*i+0]= z0+z3;
270 temp[4*i+1]= z1+z2;
271 temp[4*i+2]= z1-z2;
272 temp[4*i+3]= z0-z3;
273 }
274
275 for(i=0; i<4; i++){
276 const int offset= x_offset[i];
277 const int z0= temp[4*0+i] + temp[4*2+i];
278 const int z1= temp[4*0+i] - temp[4*2+i];
279 const int z2= temp[4*1+i] - temp[4*3+i];
280 const int z3= temp[4*1+i] + temp[4*3+i];
281
282 block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
283 block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
284 block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
285 block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
286 }
287 }
288
289 #if 0
290 /**
291 * DCT transforms the 16 dc values.
292 * @param qp quantization parameter ??? FIXME
293 */
294 static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
295 // const int qmul= dequant_coeff[qp][0];
296 int i;
297 int temp[16]; //FIXME check if this is a good idea
298 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
299 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
300
301 for(i=0; i<4; i++){
302 const int offset= y_offset[i];
303 const int z0= block[offset+stride*0] + block[offset+stride*4];
304 const int z1= block[offset+stride*0] - block[offset+stride*4];
305 const int z2= block[offset+stride*1] - block[offset+stride*5];
306 const int z3= block[offset+stride*1] + block[offset+stride*5];
307
308 temp[4*i+0]= z0+z3;
309 temp[4*i+1]= z1+z2;
310 temp[4*i+2]= z1-z2;
311 temp[4*i+3]= z0-z3;
312 }
313
314 for(i=0; i<4; i++){
315 const int offset= x_offset[i];
316 const int z0= temp[4*0+i] + temp[4*2+i];
317 const int z1= temp[4*0+i] - temp[4*2+i];
318 const int z2= temp[4*1+i] - temp[4*3+i];
319 const int z3= temp[4*1+i] + temp[4*3+i];
320
321 block[stride*0 +offset]= (z0 + z3)>>1;
322 block[stride*2 +offset]= (z1 + z2)>>1;
323 block[stride*8 +offset]= (z1 - z2)>>1;
324 block[stride*10+offset]= (z0 - z3)>>1;
325 }
326 }
327 #endif
328
329 #undef xStride
330 #undef stride
331
332 static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
333 const int stride= 16*2;
334 const int xStride= 16;
335 int a,b,c,d,e;
336
337 a= block[stride*0 + xStride*0];
338 b= block[stride*0 + xStride*1];
339 c= block[stride*1 + xStride*0];
340 d= block[stride*1 + xStride*1];
341
342 e= a-b;
343 a= a+b;
344 b= c-d;
345 c= c+d;
346
347 block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
348 block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
349 block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
350 block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
351 }
352
353 #if 0
354 static void chroma_dc_dct_c(DCTELEM *block){
355 const int stride= 16*2;
356 const int xStride= 16;
357 int a,b,c,d,e;
358
359 a= block[stride*0 + xStride*0];
360 b= block[stride*0 + xStride*1];
361 c= block[stride*1 + xStride*0];
362 d= block[stride*1 + xStride*1];
363
364 e= a-b;
365 a= a+b;
366 b= c-d;
367 c= c+d;
368
369 block[stride*0 + xStride*0]= (a+c);
370 block[stride*0 + xStride*1]= (e+b);
371 block[stride*1 + xStride*0]= (a-c);
372 block[stride*1 + xStride*1]= (e-b);
373 }
374 #endif
375
376 static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
377 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
378 int src_x_offset, int src_y_offset,
379 qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
380 MpegEncContext * const s = &h->s;
381 const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
382 int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
383 const int luma_xy= (mx&3) + ((my&3)<<2);
384 uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
385 uint8_t * src_cb, * src_cr;
386 int extra_width= h->emu_edge_width;
387 int extra_height= h->emu_edge_height;
388 int emu=0;
389 const int full_mx= mx>>2;
390 const int full_my= my>>2;
391 const int pic_width = 16*s->mb_width;
392 const int pic_height = 16*s->mb_height >> MB_FIELD;
393
394 if(mx&7) extra_width -= 3;
395 if(my&7) extra_height -= 3;
396
397 if( full_mx < 0-extra_width
398 || full_my < 0-extra_height
399 || full_mx + 16/*FIXME*/ > pic_width + extra_width
400 || full_my + 16/*FIXME*/ > pic_height + extra_height){
401 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);
402 src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
403 emu=1;
404 }
405
406 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
407 if(!square){
408 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
409 }
410
411 if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
412
413 if(MB_FIELD){
414 // chroma offset when predicting from a field of opposite parity
415 my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
416 emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
417 }
418 src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
419 src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
420
421 if(emu){
422 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);
423 src_cb= s->edge_emu_buffer;
424 }
425 chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
426
427 if(emu){
428 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);
429 src_cr= s->edge_emu_buffer;
430 }
431 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
432 }
433
434 static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
435 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
436 int x_offset, int y_offset,
437 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
438 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
439 int list0, int list1){
440 MpegEncContext * const s = &h->s;
441 qpel_mc_func *qpix_op= qpix_put;
442 h264_chroma_mc_func chroma_op= chroma_put;
443
444 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
445 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
446 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
447 x_offset += 8*s->mb_x;
448 y_offset += 8*(s->mb_y >> MB_FIELD);
449
450 if(list0){
451 Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
452 mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
453 dest_y, dest_cb, dest_cr, x_offset, y_offset,
454 qpix_op, chroma_op);
455
456 qpix_op= qpix_avg;
457 chroma_op= chroma_avg;
458 }
459
460 if(list1){
461 Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
462 mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
463 dest_y, dest_cb, dest_cr, x_offset, y_offset,
464 qpix_op, chroma_op);
465 }
466 }
467
468 static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
469 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
470 int x_offset, int y_offset,
471 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
472 h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
473 h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
474 int list0, int list1){
475 MpegEncContext * const s = &h->s;
476
477 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
478 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
479 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
480 x_offset += 8*s->mb_x;
481 y_offset += 8*(s->mb_y >> MB_FIELD);
482
483 if(list0 && list1){
484 /* don't optimize for luma-only case, since B-frames usually
485 * use implicit weights => chroma too. */
486 uint8_t *tmp_cb = s->obmc_scratchpad;
487 uint8_t *tmp_cr = s->obmc_scratchpad + 8;
488 uint8_t *tmp_y = s->obmc_scratchpad + 8*h->mb_uvlinesize;
489 int refn0 = h->ref_cache[0][ scan8[n] ];
490 int refn1 = h->ref_cache[1][ scan8[n] ];
491
492 mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
493 dest_y, dest_cb, dest_cr,
494 x_offset, y_offset, qpix_put, chroma_put);
495 mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
496 tmp_y, tmp_cb, tmp_cr,
497 x_offset, y_offset, qpix_put, chroma_put);
498
499 if(h->use_weight == 2){
500 int weight0 = h->implicit_weight[refn0][refn1][s->mb_y&1];
501 int weight1 = 64 - weight0;
502 luma_weight_avg( dest_y, tmp_y, h-> mb_linesize, 5, weight0, weight1, 0);
503 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
504 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
505 }else{
506 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
507 h->luma_weight[refn0][0][0] , h->luma_weight[refn1][1][0],
508 h->luma_weight[refn0][0][1] + h->luma_weight[refn1][1][1]);
509 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
510 h->chroma_weight[refn0][0][0][0] , h->chroma_weight[refn1][1][0][0],
511 h->chroma_weight[refn0][0][0][1] + h->chroma_weight[refn1][1][0][1]);
512 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
513 h->chroma_weight[refn0][0][1][0] , h->chroma_weight[refn1][1][1][0],
514 h->chroma_weight[refn0][0][1][1] + h->chroma_weight[refn1][1][1][1]);
515 }
516 }else{
517 int list = list1 ? 1 : 0;
518 int refn = h->ref_cache[list][ scan8[n] ];
519 Picture *ref= &h->ref_list[list][refn];
520 mc_dir_part(h, ref, n, square, chroma_height, delta, list,
521 dest_y, dest_cb, dest_cr, x_offset, y_offset,
522 qpix_put, chroma_put);
523
524 luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
525 h->luma_weight[refn][list][0], h->luma_weight[refn][list][1]);
526 if(h->use_weight_chroma){
527 chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
528 h->chroma_weight[refn][list][0][0], h->chroma_weight[refn][list][0][1]);
529 chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
530 h->chroma_weight[refn][list][1][0], h->chroma_weight[refn][list][1][1]);
531 }
532 }
533 }
534
535 static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
536 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
537 int x_offset, int y_offset,
538 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
539 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
540 h264_weight_func *weight_op, h264_biweight_func *weight_avg,
541 int list0, int list1){
542 if((h->use_weight==2 && list0 && list1
543 && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ][h->s.mb_y&1] != 32))
544 || h->use_weight==1)
545 mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
546 x_offset, y_offset, qpix_put, chroma_put,
547 weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
548 else
549 mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
550 x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
551 }
552
553 static inline void prefetch_motion(H264Context *h, int list){
554 /* fetch pixels for estimated mv 4 macroblocks ahead
555 * optimized for 64byte cache lines */
556 MpegEncContext * const s = &h->s;
557 const int refn = h->ref_cache[list][scan8[0]];
558 if(refn >= 0){
559 const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
560 const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
561 uint8_t **src= h->ref_list[list][refn].data;
562 int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
563 s->dsp.prefetch(src[0]+off, s->linesize, 4);
564 off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
565 s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
566 }
567 }
568
569 static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
570 qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
571 qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
572 h264_weight_func *weight_op, h264_biweight_func *weight_avg){
573 MpegEncContext * const s = &h->s;
574 const int mb_xy= h->mb_xy;
575 const int mb_type= s->current_picture.mb_type[mb_xy];
576
577 assert(IS_INTER(mb_type));
578
579 prefetch_motion(h, 0);
580
581 if(IS_16X16(mb_type)){
582 mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
583 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
584 weight_op, weight_avg,
585 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
586 }else if(IS_16X8(mb_type)){
587 mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
588 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
589 &weight_op[1], &weight_avg[1],
590 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
591 mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
592 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
593 &weight_op[1], &weight_avg[1],
594 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
595 }else if(IS_8X16(mb_type)){
596 mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
597 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
598 &weight_op[2], &weight_avg[2],
599 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
600 mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
601 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
602 &weight_op[2], &weight_avg[2],
603 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
604 }else{
605 int i;
606
607 assert(IS_8X8(mb_type));
608
609 for(i=0; i<4; i++){
610 const int sub_mb_type= h->sub_mb_type[i];
611 const int n= 4*i;
612 int x_offset= (i&1)<<2;
613 int y_offset= (i&2)<<1;
614
615 if(IS_SUB_8X8(sub_mb_type)){
616 mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
617 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
618 &weight_op[3], &weight_avg[3],
619 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
620 }else if(IS_SUB_8X4(sub_mb_type)){
621 mc_part(h, n , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
622 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
623 &weight_op[4], &weight_avg[4],
624 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
625 mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
626 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
627 &weight_op[4], &weight_avg[4],
628 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
629 }else if(IS_SUB_4X8(sub_mb_type)){
630 mc_part(h, n , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
631 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
632 &weight_op[5], &weight_avg[5],
633 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
634 mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
635 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
636 &weight_op[5], &weight_avg[5],
637 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
638 }else{
639 int j;
640 assert(IS_SUB_4X4(sub_mb_type));
641 for(j=0; j<4; j++){
642 int sub_x_offset= x_offset + 2*(j&1);
643 int sub_y_offset= y_offset + (j&2);
644 mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
645 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
646 &weight_op[6], &weight_avg[6],
647 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
648 }
649 }
650 }
651 }
652
653 prefetch_motion(h, 1);
654 }
655
656
657 static void free_tables(H264Context *h){
658 int i;
659 H264Context *hx;
660 av_freep(&h->intra4x4_pred_mode);
661 av_freep(&h->chroma_pred_mode_table);
662 av_freep(&h->cbp_table);
663 av_freep(&h->mvd_table[0]);
664 av_freep(&h->mvd_table[1]);
665 av_freep(&h->direct_table);
666 av_freep(&h->non_zero_count);
667 av_freep(&h->slice_table_base);
668 h->slice_table= NULL;
669 av_freep(&h->list_counts);
670
671 av_freep(&h->mb2b_xy);
672 av_freep(&h->mb2br_xy);
673
674 for(i = 0; i < MAX_THREADS; i++) {
675 hx = h->thread_context[i];
676 if(!hx) continue;
677 av_freep(&hx->top_borders[1]);
678 av_freep(&hx->top_borders[0]);
679 av_freep(&hx->s.obmc_scratchpad);
680 av_freep(&hx->rbsp_buffer[1]);
681 av_freep(&hx->rbsp_buffer[0]);
682 hx->rbsp_buffer_size[0] = 0;
683 hx->rbsp_buffer_size[1] = 0;
684 if (i) av_freep(&h->thread_context[i]);
685 }
686 }
687
688 static void init_dequant8_coeff_table(H264Context *h){
689 int i,q,x;
690 const int transpose = (h->h264dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
691 h->dequant8_coeff[0] = h->dequant8_buffer[0];
692 h->dequant8_coeff[1] = h->dequant8_buffer[1];
693
694 for(i=0; i<2; i++ ){
695 if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
696 h->dequant8_coeff[1] = h->dequant8_buffer[0];
697 break;
698 }
699
700 for(q=0; q<52; q++){
701 int shift = div6[q];
702 int idx = rem6[q];
703 for(x=0; x<64; x++)
704 h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
705 ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
706 h->pps.scaling_matrix8[i][x]) << shift;
707 }
708 }
709 }
710
711 static void init_dequant4_coeff_table(H264Context *h){
712 int i,j,q,x;
713 const int transpose = (h->h264dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
714 for(i=0; i<6; i++ ){
715 h->dequant4_coeff[i] = h->dequant4_buffer[i];
716 for(j=0; j<i; j++){
717 if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
718 h->dequant4_coeff[i] = h->dequant4_buffer[j];
719 break;
720 }
721 }
722 if(j<i)
723 continue;
724
725 for(q=0; q<52; q++){
726 int shift = div6[q] + 2;
727 int idx = rem6[q];
728 for(x=0; x<16; x++)
729 h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
730 ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
731 h->pps.scaling_matrix4[i][x]) << shift;
732 }
733 }
734 }
735
736 static void init_dequant_tables(H264Context *h){
737 int i,x;
738 init_dequant4_coeff_table(h);
739 if(h->pps.transform_8x8_mode)
740 init_dequant8_coeff_table(h);
741 if(h->sps.transform_bypass){
742 for(i=0; i<6; i++)
743 for(x=0; x<16; x++)
744 h->dequant4_coeff[i][0][x] = 1<<6;
745 if(h->pps.transform_8x8_mode)
746 for(i=0; i<2; i++)
747 for(x=0; x<64; x++)
748 h->dequant8_coeff[i][0][x] = 1<<6;
749 }
750 }
751
752
753 int ff_h264_alloc_tables(H264Context *h){
754 MpegEncContext * const s = &h->s;
755 const int big_mb_num= s->mb_stride * (s->mb_height+1);
756 const int row_mb_num= 2*s->mb_stride*s->avctx->thread_count;
757 int x,y;
758
759 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, row_mb_num * 8 * sizeof(uint8_t), fail)
760
761 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count , big_mb_num * 32 * sizeof(uint8_t), fail)
762 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail)
763 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail)
764
765 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail)
766 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 16*row_mb_num * sizeof(uint8_t), fail);
767 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 16*row_mb_num * sizeof(uint8_t), fail);
768 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 4*big_mb_num * sizeof(uint8_t) , fail);
769 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts, big_mb_num * sizeof(uint8_t), fail)
770
771 memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base));
772 h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
773
774 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy , big_mb_num * sizeof(uint32_t), fail);
775 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2br_xy , big_mb_num * sizeof(uint32_t), fail);
776 for(y=0; y<s->mb_height; y++){
777 for(x=0; x<s->mb_width; x++){
778 const int mb_xy= x + y*s->mb_stride;
779 const int b_xy = 4*x + 4*y*h->b_stride;
780
781 h->mb2b_xy [mb_xy]= b_xy;
782 h->mb2br_xy[mb_xy]= 8*(FMO ? mb_xy : (mb_xy % (2*s->mb_stride)));
783 }
784 }
785
786 s->obmc_scratchpad = NULL;
787
788 if(!h->dequant4_coeff[0])
789 init_dequant_tables(h);
790
791 return 0;
792 fail:
793 free_tables(h);
794 return -1;
795 }
796
797 /**
798 * Mimic alloc_tables(), but for every context thread.
799 */
800 static void clone_tables(H264Context *dst, H264Context *src, int i){
801 MpegEncContext * const s = &src->s;
802 dst->intra4x4_pred_mode = src->intra4x4_pred_mode + i*8*2*s->mb_stride;
803 dst->non_zero_count = src->non_zero_count;
804 dst->slice_table = src->slice_table;
805 dst->cbp_table = src->cbp_table;
806 dst->mb2b_xy = src->mb2b_xy;
807 dst->mb2br_xy = src->mb2br_xy;
808 dst->chroma_pred_mode_table = src->chroma_pred_mode_table;
809 dst->mvd_table[0] = src->mvd_table[0] + i*8*2*s->mb_stride;
810 dst->mvd_table[1] = src->mvd_table[1] + i*8*2*s->mb_stride;
811 dst->direct_table = src->direct_table;
812 dst->list_counts = src->list_counts;
813
814 dst->s.obmc_scratchpad = NULL;
815 ff_h264_pred_init(&dst->hpc, src->s.codec_id);
816 }
817
818 /**
819 * Init context
820 * Allocate buffers which are not shared amongst multiple threads.
821 */
822 static int context_init(H264Context *h){
823 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
824 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
825
826 h->ref_cache[0][scan8[5 ]+1] = h->ref_cache[0][scan8[7 ]+1] = h->ref_cache[0][scan8[13]+1] =
827 h->ref_cache[1][scan8[5 ]+1] = h->ref_cache[1][scan8[7 ]+1] = h->ref_cache[1][scan8[13]+1] = PART_NOT_AVAILABLE;
828
829 return 0;
830 fail:
831 return -1; // free_tables will clean up for us
832 }
833
834 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size);
835
836 static av_cold void common_init(H264Context *h){
837 MpegEncContext * const s = &h->s;
838
839 s->width = s->avctx->width;
840 s->height = s->avctx->height;
841 s->codec_id= s->avctx->codec->id;
842
843 ff_h264dsp_init(&h->h264dsp);
844 ff_h264_pred_init(&h->hpc, s->codec_id);
845
846 h->dequant_coeff_pps= -1;
847 s->unrestricted_mv=1;
848 s->decode=1; //FIXME
849
850 dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
851
852 memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
853 memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
854 }
855
856 int ff_h264_decode_extradata(H264Context *h)
857 {
858 AVCodecContext *avctx = h->s.avctx;
859
860 if(*(char *)avctx->extradata == 1){
861 int i, cnt, nalsize;
862 unsigned char *p = avctx->extradata;
863
864 h->is_avc = 1;
865
866 if(avctx->extradata_size < 7) {
867 av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
868 return -1;
869 }
870 /* sps and pps in the avcC always have length coded with 2 bytes,
871 so put a fake nal_length_size = 2 while parsing them */
872 h->nal_length_size = 2;
873 // Decode sps from avcC
874 cnt = *(p+5) & 0x1f; // Number of sps
875 p += 6;
876 for (i = 0; i < cnt; i++) {
877 nalsize = AV_RB16(p) + 2;
878 if(decode_nal_units(h, p, nalsize) < 0) {
879 av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
880 return -1;
881 }
882 p += nalsize;
883 }
884 // Decode pps from avcC
885 cnt = *(p++); // Number of pps
886 for (i = 0; i < cnt; i++) {
887 nalsize = AV_RB16(p) + 2;
888 if(decode_nal_units(h, p, nalsize) != nalsize) {
889 av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
890 return -1;
891 }
892 p += nalsize;
893 }
894 // Now store right nal length size, that will be use to parse all other nals
895 h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
896 } else {
897 h->is_avc = 0;
898 if(decode_nal_units(h, avctx->extradata, avctx->extradata_size) < 0)
899 return -1;
900 }
901 return 0;
902 }
903
904 av_cold int ff_h264_decode_init(AVCodecContext *avctx){
905 H264Context *h= avctx->priv_data;
906 MpegEncContext * const s = &h->s;
907
908 MPV_decode_defaults(s);
909
910 s->avctx = avctx;
911 common_init(h);
912
913 s->out_format = FMT_H264;
914 s->workaround_bugs= avctx->workaround_bugs;
915
916 // set defaults
917 // s->decode_mb= ff_h263_decode_mb;
918 s->quarter_sample = 1;
919 if(!avctx->has_b_frames)
920 s->low_delay= 1;
921
922 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
923
924 ff_h264_decode_init_vlc();
925
926 h->thread_context[0] = h;
927 h->outputed_poc = INT_MIN;
928 h->prev_poc_msb= 1<<16;
929 h->x264_build = -1;
930 ff_h264_reset_sei(h);
931 if(avctx->codec_id == CODEC_ID_H264){
932 if(avctx->ticks_per_frame == 1){
933 s->avctx->time_base.den *=2;
934 }
935 avctx->ticks_per_frame = 2;
936 }
937
938 if(avctx->extradata_size > 0 && avctx->extradata &&
939 ff_h264_decode_extradata(h))
940 return -1;
941
942 if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames < h->sps.num_reorder_frames){
943 s->avctx->has_b_frames = h->sps.num_reorder_frames;
944 s->low_delay = 0;
945 }
946
947 return 0;
948 }
949
950 int ff_h264_frame_start(H264Context *h){
951 MpegEncContext * const s = &h->s;
952 int i;
953
954 if(MPV_frame_start(s, s->avctx) < 0)
955 return -1;
956 ff_er_frame_start(s);
957 /*
958 * MPV_frame_start uses pict_type to derive key_frame.
959 * This is incorrect for H.264; IDR markings must be used.
960 * Zero here; IDR markings per slice in frame or fields are ORed in later.
961 * See decode_nal_units().
962 */
963 s->current_picture_ptr->key_frame= 0;
964 s->current_picture_ptr->mmco_reset= 0;
965
966 assert(s->linesize && s->uvlinesize);
967
968 for(i=0; i<16; i++){
969 h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
970 h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
971 }
972 for(i=0; i<4; i++){
973 h->block_offset[16+i]=
974 h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
975 h->block_offset[24+16+i]=
976 h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
977 }
978
979 /* can't be in alloc_tables because linesize isn't known there.
980 * FIXME: redo bipred weight to not require extra buffer? */
981 for(i = 0; i < s->avctx->thread_count; i++)
982 if(!h->thread_context[i]->s.obmc_scratchpad)
983 h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
984
985 /* some macroblocks can be accessed before they're available in case of lost slices, mbaff or threading*/
986 memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
987
988 // s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
989
990 // We mark the current picture as non-reference after allocating it, so
991 // that if we break out due to an error it can be released automatically
992 // in the next MPV_frame_start().
993 // SVQ3 as well as most other codecs have only last/next/current and thus
994 // get released even with set reference, besides SVQ3 and others do not
995 // mark frames as reference later "naturally".
996 if(s->codec_id != CODEC_ID_SVQ3)
997 s->current_picture_ptr->reference= 0;
998
999 s->current_picture_ptr->field_poc[0]=
1000 s->current_picture_ptr->field_poc[1]= INT_MAX;
1001 assert(s->current_picture_ptr->long_ref==0);
1002
1003 return 0;
1004 }
1005
1006 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){
1007 MpegEncContext * const s = &h->s;
1008 uint8_t *top_border;
1009 int top_idx = 1;
1010
1011 src_y -= linesize;
1012 src_cb -= uvlinesize;
1013 src_cr -= uvlinesize;
1014
1015 if(!simple && FRAME_MBAFF){
1016 if(s->mb_y&1){
1017 if(!MB_MBAFF){
1018 top_border = h->top_borders[0][s->mb_x];
1019 AV_COPY128(top_border, src_y + 15*linesize);
1020 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1021 AV_COPY64(top_border+16, src_cb+7*uvlinesize);
1022 AV_COPY64(top_border+24, src_cr+7*uvlinesize);
1023 }
1024 }
1025 }else if(MB_MBAFF){
1026 top_idx = 0;
1027 }else
1028 return;
1029 }
1030
1031 top_border = h->top_borders[top_idx][s->mb_x];
1032 // There are two lines saved, the line above the the top macroblock of a pair,
1033 // and the line above the bottom macroblock
1034 AV_COPY128(top_border, src_y + 16*linesize);
1035
1036 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1037 AV_COPY64(top_border+16, src_cb+8*uvlinesize);
1038 AV_COPY64(top_border+24, src_cr+8*uvlinesize);
1039 }
1040 }
1041
1042 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){
1043 MpegEncContext * const s = &h->s;
1044 int deblock_left;
1045 int deblock_top;
1046 int top_idx = 1;
1047 uint8_t *top_border_m1;
1048 uint8_t *top_border;
1049
1050 if(!simple && FRAME_MBAFF){
1051 if(s->mb_y&1){
1052 if(!MB_MBAFF)
1053 return;
1054 }else{
1055 top_idx = MB_MBAFF ? 0 : 1;
1056 }
1057 }
1058
1059 if(h->deblocking_filter == 2) {
1060 deblock_left = h->left_type[0];
1061 deblock_top = h->top_type;
1062 } else {
1063 deblock_left = (s->mb_x > 0);
1064 deblock_top = (s->mb_y > !!MB_FIELD);
1065 }
1066
1067 src_y -= linesize + 1;
1068 src_cb -= uvlinesize + 1;
1069 src_cr -= uvlinesize + 1;
1070
1071 top_border_m1 = h->top_borders[top_idx][s->mb_x-1];
1072 top_border = h->top_borders[top_idx][s->mb_x];
1073
1074 #define XCHG(a,b,xchg)\
1075 if (xchg) AV_SWAP64(b,a);\
1076 else AV_COPY64(b,a);
1077
1078 if(deblock_top){
1079 if(deblock_left){
1080 XCHG(top_border_m1+8, src_y -7, 1);
1081 }
1082 XCHG(top_border+0, src_y +1, xchg);
1083 XCHG(top_border+8, src_y +9, 1);
1084 if(s->mb_x+1 < s->mb_width){
1085 XCHG(h->top_borders[top_idx][s->mb_x+1], src_y +17, 1);
1086 }
1087 }
1088
1089 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1090 if(deblock_top){
1091 if(deblock_left){
1092 XCHG(top_border_m1+16, src_cb -7, 1);
1093 XCHG(top_border_m1+24, src_cr -7, 1);
1094 }
1095 XCHG(top_border+16, src_cb+1, 1);
1096 XCHG(top_border+24, src_cr+1, 1);
1097 }
1098 }
1099 }
1100
1101 static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
1102 MpegEncContext * const s = &h->s;
1103 const int mb_x= s->mb_x;
1104 const int mb_y= s->mb_y;
1105 const int mb_xy= h->mb_xy;
1106 const int mb_type= s->current_picture.mb_type[mb_xy];
1107 uint8_t *dest_y, *dest_cb, *dest_cr;
1108 int linesize, uvlinesize /*dct_offset*/;
1109 int i;
1110 int *block_offset = &h->block_offset[0];
1111 const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
1112 /* is_h264 should always be true if SVQ3 is disabled. */
1113 const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
1114 void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1115 void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1116
1117 dest_y = s->current_picture.data[0] + (mb_x + mb_y * s->linesize ) * 16;
1118 dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
1119 dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
1120
1121 s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
1122 s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
1123
1124 h->list_counts[mb_xy]= h->list_count;
1125
1126 if (!simple && MB_FIELD) {
1127 linesize = h->mb_linesize = s->linesize * 2;
1128 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
1129 block_offset = &h->block_offset[24];
1130 if(mb_y&1){ //FIXME move out of this function?
1131 dest_y -= s->linesize*15;
1132 dest_cb-= s->uvlinesize*7;
1133 dest_cr-= s->uvlinesize*7;
1134 }
1135 if(FRAME_MBAFF) {
1136 int list;
1137 for(list=0; list<h->list_count; list++){
1138 if(!USES_LIST(mb_type, list))
1139 continue;
1140 if(IS_16X16(mb_type)){
1141 int8_t *ref = &h->ref_cache[list][scan8[0]];
1142 fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
1143 }else{
1144 for(i=0; i<16; i+=4){
1145 int ref = h->ref_cache[list][scan8[i]];
1146 if(ref >= 0)
1147 fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
1148 }
1149 }
1150 }
1151 }
1152 } else {
1153 linesize = h->mb_linesize = s->linesize;
1154 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
1155 // dct_offset = s->linesize * 16;
1156 }
1157
1158 if (!simple && IS_INTRA_PCM(mb_type)) {
1159 for (i=0; i<16; i++) {
1160 memcpy(dest_y + i* linesize, h->mb + i*8, 16);
1161 }
1162 for (i=0; i<8; i++) {
1163 memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4, 8);
1164 memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4, 8);
1165 }
1166 } else {
1167 if(IS_INTRA(mb_type)){
1168 if(h->deblocking_filter)
1169 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
1170
1171 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1172 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
1173 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
1174 }
1175
1176 if(IS_INTRA4x4(mb_type)){
1177 if(simple || !s->encoding){
1178 if(IS_8x8DCT(mb_type)){
1179 if(transform_bypass){
1180 idct_dc_add =
1181 idct_add = s->dsp.add_pixels8;
1182 }else{
1183 idct_dc_add = h->h264dsp.h264_idct8_dc_add;
1184 idct_add = h->h264dsp.h264_idct8_add;
1185 }
1186 for(i=0; i<16; i+=4){
1187 uint8_t * const ptr= dest_y + block_offset[i];
1188 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1189 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1190 h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
1191 }else{
1192 const int nnz = h->non_zero_count_cache[ scan8[i] ];
1193 h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
1194 (h->topright_samples_available<<i)&0x4000, linesize);
1195 if(nnz){
1196 if(nnz == 1 && h->mb[i*16])
1197 idct_dc_add(ptr, h->mb + i*16, linesize);
1198 else
1199 idct_add (ptr, h->mb + i*16, linesize);
1200 }
1201 }
1202 }
1203 }else{
1204 if(transform_bypass){
1205 idct_dc_add =
1206 idct_add = s->dsp.add_pixels4;
1207 }else{
1208 idct_dc_add = h->h264dsp.h264_idct_dc_add;
1209 idct_add = h->h264dsp.h264_idct_add;
1210 }
1211 for(i=0; i<16; i++){
1212 uint8_t * const ptr= dest_y + block_offset[i];
1213 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1214
1215 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1216 h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
1217 }else{
1218 uint8_t *topright;
1219 int nnz, tr;
1220 if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
1221 const int topright_avail= (h->topright_samples_available<<i)&0x8000;
1222 assert(mb_y || linesize <= block_offset[i]);
1223 if(!topright_avail){
1224 tr= ptr[3 - linesize]*0x01010101;
1225 topright= (uint8_t*) &tr;
1226 }else
1227 topright= ptr + 4 - linesize;
1228 }else
1229 topright= NULL;
1230
1231 h->hpc.pred4x4[ dir ](ptr, topright, linesize);
1232 nnz = h->non_zero_count_cache[ scan8[i] ];
1233 if(nnz){
1234 if(is_h264){
1235 if(nnz == 1 && h->mb[i*16])
1236 idct_dc_add(ptr, h->mb + i*16, linesize);
1237 else
1238 idct_add (ptr, h->mb + i*16, linesize);
1239 }else
1240 ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
1241 }
1242 }
1243 }
1244 }
1245 }
1246 }else{
1247 h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
1248 if(is_h264){
1249 if(!transform_bypass)
1250 h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
1251 }else
1252 ff_svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
1253 }
1254 if(h->deblocking_filter)
1255 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
1256 }else if(is_h264){
1257 hl_motion(h, dest_y, dest_cb, dest_cr,
1258 s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1259 s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1260 h->h264dsp.weight_h264_pixels_tab, h->h264dsp.biweight_h264_pixels_tab);
1261 }
1262
1263
1264 if(!IS_INTRA4x4(mb_type)){
1265 if(is_h264){
1266 if(IS_INTRA16x16(mb_type)){
1267 if(transform_bypass){
1268 if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
1269 h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
1270 }else{
1271 for(i=0; i<16; i++){
1272 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1273 s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
1274 }
1275 }
1276 }else{
1277 h->h264dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1278 }
1279 }else if(h->cbp&15){
1280 if(transform_bypass){
1281 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1282 idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
1283 for(i=0; i<16; i+=di){
1284 if(h->non_zero_count_cache[ scan8[i] ]){
1285 idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
1286 }
1287 }
1288 }else{
1289 if(IS_8x8DCT(mb_type)){
1290 h->h264dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1291 }else{
1292 h->h264dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1293 }
1294 }
1295 }
1296 }else{
1297 for(i=0; i<16; i++){
1298 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
1299 uint8_t * const ptr= dest_y + block_offset[i];
1300 ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1301 }
1302 }
1303 }
1304 }
1305
1306 if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
1307 uint8_t *dest[2] = {dest_cb, dest_cr};
1308 if(transform_bypass){
1309 if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
1310 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
1311 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
1312 }else{
1313 idct_add = s->dsp.add_pixels4;
1314 for(i=16; i<16+8; i++){
1315 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1316 idct_add (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1317 }
1318 }
1319 }else{
1320 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]);
1321 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]);
1322 if(is_h264){
1323 h->h264dsp.h264_idct_add8(dest, block_offset,
1324 h->mb, uvlinesize,
1325 h->non_zero_count_cache);
1326 }else{
1327 for(i=16; i<16+8; i++){
1328 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
1329 uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
1330 ff_svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[s->qscale + 12] - 12, 2);
1331 }
1332 }
1333 }
1334 }
1335 }
1336 }
1337 if(h->cbp || IS_INTRA(mb_type))
1338 s->dsp.clear_blocks(h->mb);
1339 }
1340
1341 /**
1342 * Process a macroblock; this case avoids checks for expensive uncommon cases.
1343 */
1344 static void hl_decode_mb_simple(H264Context *h){
1345 hl_decode_mb_internal(h, 1);
1346 }
1347
1348 /**
1349 * Process a macroblock; this handles edge cases, such as interlacing.
1350 */
1351 static void av_noinline hl_decode_mb_complex(H264Context *h){
1352 hl_decode_mb_internal(h, 0);
1353 }
1354
1355 void ff_h264_hl_decode_mb(H264Context *h){
1356 MpegEncContext * const s = &h->s;
1357 const int mb_xy= h->mb_xy;
1358 const int mb_type= s->current_picture.mb_type[mb_xy];
1359 int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1360
1361 if (is_complex)
1362 hl_decode_mb_complex(h);
1363 else hl_decode_mb_simple(h);
1364 }
1365
1366 static int pred_weight_table(H264Context *h){
1367 MpegEncContext * const s = &h->s;
1368 int list, i;
1369 int luma_def, chroma_def;
1370
1371 h->use_weight= 0;
1372 h->use_weight_chroma= 0;
1373 h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
1374 h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
1375 luma_def = 1<<h->luma_log2_weight_denom;
1376 chroma_def = 1<<h->chroma_log2_weight_denom;
1377
1378 for(list=0; list<2; list++){
1379 h->luma_weight_flag[list] = 0;
1380 h->chroma_weight_flag[list] = 0;
1381 for(i=0; i<h->ref_count[list]; i++){
1382 int luma_weight_flag, chroma_weight_flag;
1383
1384 luma_weight_flag= get_bits1(&s->gb);
1385 if(luma_weight_flag){
1386 h->luma_weight[i][list][0]= get_se_golomb(&s->gb);
1387 h->luma_weight[i][list][1]= get_se_golomb(&s->gb);
1388 if( h->luma_weight[i][list][0] != luma_def
1389 || h->luma_weight[i][list][1] != 0) {
1390 h->use_weight= 1;
1391 h->luma_weight_flag[list]= 1;
1392 }
1393 }else{
1394 h->luma_weight[i][list][0]= luma_def;
1395 h->luma_weight[i][list][1]= 0;
1396 }
1397
1398 if(CHROMA){
1399 chroma_weight_flag= get_bits1(&s->gb);
1400 if(chroma_weight_flag){
1401 int j;
1402 for(j=0; j<2; j++){
1403 h->chroma_weight[i][list][j][0]= get_se_golomb(&s->gb);
1404 h->chroma_weight[i][list][j][1]= get_se_golomb(&s->gb);
1405 if( h->chroma_weight[i][list][j][0] != chroma_def
1406 || h->chroma_weight[i][list][j][1] != 0) {
1407 h->use_weight_chroma= 1;
1408 h->chroma_weight_flag[list]= 1;
1409 }
1410 }
1411 }else{
1412 int j;
1413 for(j=0; j<2; j++){
1414 h->chroma_weight[i][list][j][0]= chroma_def;
1415 h->chroma_weight[i][list][j][1]= 0;
1416 }
1417 }
1418 }
1419 }
1420 if(h->slice_type_nos != FF_B_TYPE) break;
1421 }
1422 h->use_weight= h->use_weight || h->use_weight_chroma;
1423 return 0;
1424 }
1425
1426 /**
1427 * Initialize implicit_weight table.
1428 * @param field 0/1 initialize the weight for interlaced MBAFF
1429 * -1 initializes the rest
1430 */
1431 static void implicit_weight_table(H264Context *h, int field){
1432 MpegEncContext * const s = &h->s;
1433 int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
1434
1435 for (i = 0; i < 2; i++) {
1436 h->luma_weight_flag[i] = 0;
1437 h->chroma_weight_flag[i] = 0;
1438 }
1439
1440 if(field < 0){
1441 cur_poc = s->current_picture_ptr->poc;
1442 if( h->ref_count[0] == 1 && h->ref_count[1] == 1 && !FRAME_MBAFF
1443 && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
1444 h->use_weight= 0;
1445 h->use_weight_chroma= 0;
1446 return;
1447 }
1448 ref_start= 0;
1449 ref_count0= h->ref_count[0];
1450 ref_count1= h->ref_count[1];
1451 }else{
1452 cur_poc = s->current_picture_ptr->field_poc[field];
1453 ref_start= 16;
1454 ref_count0= 16+2*h->ref_count[0];
1455 ref_count1= 16+2*h->ref_count[1];
1456 }
1457
1458 h->use_weight= 2;
1459 h->use_weight_chroma= 2;
1460 h->luma_log2_weight_denom= 5;
1461 h->chroma_log2_weight_denom= 5;
1462
1463 for(ref0=ref_start; ref0 < ref_count0; ref0++){
1464 int poc0 = h->ref_list[0][ref0].poc;
1465 for(ref1=ref_start; ref1 < ref_count1; ref1++){
1466 int poc1 = h->ref_list[1][ref1].poc;
1467 int td = av_clip(poc1 - poc0, -128, 127);
1468 int w= 32;
1469 if(td){
1470 int tb = av_clip(cur_poc - poc0, -128, 127);
1471 int tx = (16384 + (FFABS(td) >> 1)) / td;
1472 int dist_scale_factor = (tb*tx + 32) >> 8;
1473 if(dist_scale_factor >= -64 && dist_scale_factor <= 128)
1474 w = 64 - dist_scale_factor;
1475 }
1476 if(field<0){
1477 h->implicit_weight[ref0][ref1][0]=
1478 h->implicit_weight[ref0][ref1][1]= w;
1479 }else{
1480 h->implicit_weight[ref0][ref1][field]=w;
1481 }
1482 }
1483 }
1484 }
1485
1486 /**
1487 * instantaneous decoder refresh.
1488 */
1489 static void idr(H264Context *h){
1490 ff_h264_remove_all_refs(h);
1491 h->prev_frame_num= 0;
1492 h->prev_frame_num_offset= 0;
1493 h->prev_poc_msb=
1494 h->prev_poc_lsb= 0;
1495 }
1496
1497 /* forget old pics after a seek */
1498 static void flush_dpb(AVCodecContext *avctx){
1499 H264Context *h= avctx->priv_data;
1500 int i;
1501 for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
1502 if(h->delayed_pic[i])
1503 h->delayed_pic[i]->reference= 0;
1504 h->delayed_pic[i]= NULL;
1505 }
1506 h->outputed_poc= INT_MIN;
1507 h->prev_interlaced_frame = 1;
1508 idr(h);
1509 if(h->s.current_picture_ptr)
1510 h->s.current_picture_ptr->reference= 0;
1511 h->s.first_field= 0;
1512 ff_h264_reset_sei(h);
1513 ff_mpeg_flush(avctx);
1514 }
1515
1516 static int init_poc(H264Context *h){
1517 MpegEncContext * const s = &h->s;
1518 const int max_frame_num= 1<<h->sps.log2_max_frame_num;
1519 int field_poc[2];
1520 Picture *cur = s->current_picture_ptr;
1521
1522 h->frame_num_offset= h->prev_frame_num_offset;
1523 if(h->frame_num < h->prev_frame_num)
1524 h->frame_num_offset += max_frame_num;
1525
1526 if(h->sps.poc_type==0){
1527 const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
1528
1529 if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
1530 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
1531 else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
1532 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
1533 else
1534 h->poc_msb = h->prev_poc_msb;
1535 //printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
1536 field_poc[0] =
1537 field_poc[1] = h->poc_msb + h->poc_lsb;
1538 if(s->picture_structure == PICT_FRAME)
1539 field_poc[1] += h->delta_poc_bottom;
1540 }else if(h->sps.poc_type==1){
1541 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
1542 int i;
1543
1544 if(h->sps.poc_cycle_length != 0)
1545 abs_frame_num = h->frame_num_offset + h->frame_num;
1546 else
1547 abs_frame_num = 0;
1548
1549 if(h->nal_ref_idc==0 && abs_frame_num > 0)
1550 abs_frame_num--;
1551
1552 expected_delta_per_poc_cycle = 0;
1553 for(i=0; i < h->sps.poc_cycle_length; i++)
1554 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
1555
1556 if(abs_frame_num > 0){
1557 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
1558 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
1559
1560 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
1561 for(i = 0; i <= frame_num_in_poc_cycle; i++)
1562 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
1563 } else
1564 expectedpoc = 0;
1565
1566 if(h->nal_ref_idc == 0)
1567 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
1568
1569 field_poc[0] = expectedpoc + h->delta_poc[0];
1570 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
1571
1572 if(s->picture_structure == PICT_FRAME)
1573 field_poc[1] += h->delta_poc[1];
1574 }else{
1575 int poc= 2*(h->frame_num_offset + h->frame_num);
1576
1577 if(!h->nal_ref_idc)
1578 poc--;
1579
1580 field_poc[0]= poc;
1581 field_poc[1]= poc;
1582 }
1583
1584 if(s->picture_structure != PICT_BOTTOM_FIELD)
1585 s->current_picture_ptr->field_poc[0]= field_poc[0];
1586 if(s->picture_structure != PICT_TOP_FIELD)
1587 s->current_picture_ptr->field_poc[1]= field_poc[1];
1588 cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
1589
1590 return 0;
1591 }
1592
1593
1594 /**
1595 * initialize scan tables
1596 */
1597 static void init_scan_tables(H264Context *h){
1598 int i;
1599 if(h->h264dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
1600 memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
1601 memcpy(h-> field_scan, field_scan, 16*sizeof(uint8_t));
1602 }else{
1603 for(i=0; i<16; i++){
1604 #define T(x) (x>>2) | ((x<<2) & 0xF)
1605 h->zigzag_scan[i] = T(zigzag_scan[i]);
1606 h-> field_scan[i] = T( field_scan[i]);
1607 #undef T
1608 }
1609 }
1610 if(h->h264dsp.h264_idct8_add == ff_h264_idct8_add_c){
1611 memcpy(h->zigzag_scan8x8, ff_zigzag_direct, 64*sizeof(uint8_t));
1612 memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
1613 memcpy(h->field_scan8x8, field_scan8x8, 64*sizeof(uint8_t));
1614 memcpy(h->field_scan8x8_cavlc, field_scan8x8_cavlc, 64*sizeof(uint8_t));
1615 }else{
1616 for(i=0; i<64; i++){
1617 #define T(x) (x>>3) | ((x&7)<<3)
1618 h->zigzag_scan8x8[i] = T(ff_zigzag_direct[i]);
1619 h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
1620 h->field_scan8x8[i] = T(field_scan8x8[i]);
1621 h->field_scan8x8_cavlc[i] = T(field_scan8x8_cavlc[i]);
1622 #undef T
1623 }
1624 }
1625 if(h->sps.transform_bypass){ //FIXME same ugly
1626 h->zigzag_scan_q0 = zigzag_scan;
1627 h->zigzag_scan8x8_q0 = ff_zigzag_direct;
1628 h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
1629 h->field_scan_q0 = field_scan;
1630 h->field_scan8x8_q0 = field_scan8x8;
1631 h->field_scan8x8_cavlc_q0 = field_scan8x8_cavlc;
1632 }else{
1633 h->zigzag_scan_q0 = h->zigzag_scan;
1634 h->zigzag_scan8x8_q0 = h->zigzag_scan8x8;
1635 h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
1636 h->field_scan_q0 = h->field_scan;
1637 h->field_scan8x8_q0 = h->field_scan8x8;
1638 h->field_scan8x8_cavlc_q0 = h->field_scan8x8_cavlc;
1639 }
1640 }
1641
1642 static void field_end(H264Context *h){
1643 MpegEncContext * const s = &h->s;
1644 AVCodecContext * const avctx= s->avctx;
1645 s->mb_y= 0;
1646
1647 s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
1648 s->current_picture_ptr->pict_type= s->pict_type;
1649
1650 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1651 ff_vdpau_h264_set_reference_frames(s);
1652
1653 if(!s->dropable) {
1654 ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1655 h->prev_poc_msb= h->poc_msb;
1656 h->prev_poc_lsb= h->poc_lsb;
1657 }
1658 h->prev_frame_num_offset= h->frame_num_offset;
1659 h->prev_frame_num= h->frame_num;
1660
1661 if (avctx->hwaccel) {
1662 if (avctx->hwaccel->end_frame(avctx) < 0)
1663 av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
1664 }
1665
1666 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1667 ff_vdpau_h264_picture_complete(s);
1668
1669 /*
1670 * FIXME: Error handling code does not seem to support interlaced
1671 * when slices span multiple rows
1672 * The ff_er_add_slice calls don't work right for bottom
1673 * fields; they cause massive erroneous error concealing
1674 * Error marking covers both fields (top and bottom).
1675 * This causes a mismatched s->error_count
1676 * and a bad error table. Further, the error count goes to
1677 * INT_MAX when called for bottom field, because mb_y is
1678 * past end by one (callers fault) and resync_mb_y != 0
1679 * causes problems for the first MB line, too.
1680 */
1681 if (!FIELD_PICTURE)
1682 ff_er_frame_end(s);
1683
1684 MPV_frame_end(s);
1685
1686 h->current_slice=0;
1687 }
1688
1689 /**
1690 * Replicate H264 "master" context to thread contexts.
1691 */
1692 static void clone_slice(H264Context *dst, H264Context *src)
1693 {
1694 memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset));
1695 dst->s.current_picture_ptr = src->s.current_picture_ptr;
1696 dst->s.current_picture = src->s.current_picture;
1697 dst->s.linesize = src->s.linesize;
1698 dst->s.uvlinesize = src->s.uvlinesize;
1699 dst->s.first_field = src->s.first_field;
1700
1701 dst->prev_poc_msb = src->prev_poc_msb;
1702 dst->prev_poc_lsb = src->prev_poc_lsb;
1703 dst->prev_frame_num_offset = src->prev_frame_num_offset;
1704 dst->prev_frame_num = src->prev_frame_num;
1705 dst->short_ref_count = src->short_ref_count;
1706
1707 memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref));
1708 memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref));
1709 memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
1710 memcpy(dst->ref_list, src->ref_list, sizeof(dst->ref_list));
1711
1712 memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff));
1713 memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff));
1714 }
1715
1716 /**
1717 * decodes a slice header.
1718 * This will also call MPV_common_init() and frame_start() as needed.
1719 *
1720 * @param h h264context
1721 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
1722 *
1723 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
1724 */
1725 static int decode_slice_header(H264Context *h, H264Context *h0){
1726 MpegEncContext * const s = &h->s;
1727 MpegEncContext * const s0 = &h0->s;
1728 unsigned int first_mb_in_slice;
1729 unsigned int pps_id;
1730 int num_ref_idx_active_override_flag;
1731 unsigned int slice_type, tmp, i, j;
1732 int default_ref_list_done = 0;
1733 int last_pic_structure;
1734
1735 s->dropable= h->nal_ref_idc == 0;
1736
1737 if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
1738 s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
1739 s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
1740 }else{
1741 s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
1742 s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
1743 }
1744
1745 first_mb_in_slice= get_ue_golomb(&s->gb);
1746
1747 if(first_mb_in_slice == 0){ //FIXME better field boundary detection
1748 if(h0->current_slice && FIELD_PICTURE){
1749 field_end(h);
1750 }
1751
1752 h0->current_slice = 0;
1753 if (!s0->first_field)
1754 s->current_picture_ptr= NULL;
1755 }
1756
1757 slice_type= get_ue_golomb_31(&s->gb);
1758 if(slice_type > 9){
1759 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);
1760 return -1;
1761 }
1762 if(slice_type > 4){
1763 slice_type -= 5;
1764 h->slice_type_fixed=1;
1765 }else
1766 h->slice_type_fixed=0;
1767
1768 slice_type= golomb_to_pict_type[ slice_type ];
1769 if (slice_type == FF_I_TYPE
1770 || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
1771 default_ref_list_done = 1;
1772 }
1773 h->slice_type= slice_type;
1774 h->slice_type_nos= slice_type & 3;
1775
1776 s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
1777
1778 pps_id= get_ue_golomb(&s->gb);
1779 if(pps_id>=MAX_PPS_COUNT){
1780 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
1781 return -1;
1782 }
1783 if(!h0->pps_buffers[pps_id]) {
1784 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
1785 return -1;
1786 }
1787 h->pps= *h0->pps_buffers[pps_id];
1788
1789 if(!h0->sps_buffers[h->pps.sps_id]) {
1790 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
1791 return -1;
1792 }
1793 h->sps = *h0->sps_buffers[h->pps.sps_id];
1794
1795 s->avctx->profile = h->sps.profile_idc;
1796 s->avctx->level = h->sps.level_idc;
1797 s->avctx->refs = h->sps.ref_frame_count;
1798
1799 if(h == h0 && h->dequant_coeff_pps != pps_id){
1800 h->dequant_coeff_pps = pps_id;
1801 init_dequant_tables(h);
1802 }
1803
1804 s->mb_width= h->sps.mb_width;
1805 s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
1806
1807 h->b_stride= s->mb_width*4;
1808
1809 s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
1810 if(h->sps.frame_mbs_only_flag)
1811 s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
1812 else
1813 s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
1814
1815 if (s->context_initialized
1816 && ( s->width != s->avctx->width || s->height != s->avctx->height
1817 || av_cmp_q(h->sps.sar, s->avctx->sample_aspect_ratio))) {
1818 if(h != h0)
1819 return -1; // width / height changed during parallelized decoding
1820 free_tables(h);
1821 flush_dpb(s->avctx);
1822 MPV_common_end(s);
1823 }
1824 if (!s->context_initialized) {
1825 if(h != h0)
1826 return -1; // we cant (re-)initialize context during parallel decoding
1827
1828 avcodec_set_dimensions(s->avctx, s->width, s->height);
1829 s->avctx->sample_aspect_ratio= h->sps.sar;
1830 av_assert0(s->avctx->sample_aspect_ratio.den);
1831
1832 if(h->sps.video_signal_type_present_flag){
1833 s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
1834 if(h->sps.colour_description_present_flag){
1835 s->avctx->color_primaries = h->sps.color_primaries;
1836 s->avctx->color_trc = h->sps.color_trc;
1837 s->avctx->colorspace = h->sps.colorspace;
1838 }
1839 }
1840
1841 if(h->sps.timing_info_present_flag){
1842 int64_t den= h->sps.time_scale;
1843 if(h->x264_build < 44U)
1844 den *= 2;
1845 av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
1846 h->sps.num_units_in_tick, den, 1<<30);
1847 }
1848 s->avctx->pix_fmt = s->avctx->get_format(s->avctx,
1849 s->avctx->codec->pix_fmts ?
1850 s->avctx->codec->pix_fmts :
1851 s->avctx->color_range == AVCOL_RANGE_JPEG ?
1852 hwaccel_pixfmt_list_h264_jpeg_420 :
1853 ff_hwaccel_pixfmt_list_420);
1854 s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
1855
1856 if (MPV_common_init(s) < 0)
1857 return -1;
1858 s->first_field = 0;
1859 h->prev_interlaced_frame = 1;
1860
1861 init_scan_tables(h);
1862 ff_h264_alloc_tables(h);
1863
1864 for(i = 1; i < s->avctx->thread_count; i++) {
1865 H264Context *c;
1866 c = h->thread_context[i] = av_malloc(sizeof(H264Context));
1867 memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
1868 memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
1869 c->h264dsp = h->h264dsp;
1870 c->sps = h->sps;
1871 c->pps = h->pps;
1872 init_scan_tables(c);
1873 clone_tables(c, h, i);
1874 }
1875
1876 for(i = 0; i < s->avctx->thread_count; i++)
1877 if(context_init(h->thread_context[i]) < 0)
1878 return -1;
1879 }
1880
1881 h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
1882
1883 h->mb_mbaff = 0;
1884 h->mb_aff_frame = 0;
1885 last_pic_structure = s0->picture_structure;
1886 if(h->sps.frame_mbs_only_flag){
1887 s->picture_structure= PICT_FRAME;
1888 }else{
1889 if(get_bits1(&s->gb)) { //field_pic_flag
1890 s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
1891 } else {
1892 s->picture_structure= PICT_FRAME;
1893 h->mb_aff_frame = h->sps.mb_aff;
1894 }
1895 }
1896 h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
1897
1898 if(h0->current_slice == 0){
1899 while(h->frame_num != h->prev_frame_num &&
1900 h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
1901 Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
1902 av_log(h->s.avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
1903 if (ff_h264_frame_start(h) < 0)
1904 return -1;
1905 h->prev_frame_num++;
1906 h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
1907 s->current_picture_ptr->frame_num= h->prev_frame_num;
1908 ff_generate_sliding_window_mmcos(h);
1909 ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1910 /* Error concealment: if a ref is missing, copy the previous ref in its place.
1911 * FIXME: avoiding a memcpy would be nice, but ref handling makes many assumptions
1912 * about there being no actual duplicates.
1913 * FIXME: this doesn't copy padding for out-of-frame motion vectors. Given we're
1914 * concealing a lost frame, this probably isn't noticable by comparison, but it should
1915 * be fixed. */
1916 if (h->short_ref_count) {
1917 if (prev) {
1918 av_image_copy(h->short_ref[0]->data, h->short_ref[0]->linesize,
1919 (const uint8_t**)prev->data, prev->linesize,
1920 PIX_FMT_YUV420P, s->mb_width*16, s->mb_height*16);
1921 h->short_ref[0]->poc = prev->poc+2;
1922 }
1923 h->short_ref[0]->frame_num = h->prev_frame_num;
1924 }
1925 }
1926
1927 /* See if we have a decoded first field looking for a pair... */
1928 if (s0->first_field) {
1929 assert(s0->current_picture_ptr);
1930 assert(s0->current_picture_ptr->data[0]);
1931 assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
1932
1933 /* figure out if we have a complementary field pair */
1934 if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
1935 /*
1936 * Previous field is unmatched. Don't display it, but let it
1937 * remain for reference if marked as such.
1938 */
1939 s0->current_picture_ptr = NULL;
1940 s0->first_field = FIELD_PICTURE;
1941
1942 } else {
1943 if (h->nal_ref_idc &&
1944 s0->current_picture_ptr->reference &&
1945 s0->current_picture_ptr->frame_num != h->frame_num) {
1946 /*
1947 * This and previous field were reference, but had
1948 * different frame_nums. Consider this field first in
1949 * pair. Throw away previous field except for reference
1950 * purposes.
1951 */
1952 s0->first_field = 1;
1953 s0->current_picture_ptr = NULL;
1954
1955 } else {
1956 /* Second field in complementary pair */
1957 s0->first_field = 0;
1958 }
1959 }
1960
1961 } else {
1962 /* Frame or first field in a potentially complementary pair */
1963 assert(!s0->current_picture_ptr);
1964 s0->first_field = FIELD_PICTURE;
1965 }
1966
1967 if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) {
1968 s0->first_field = 0;
1969 return -1;
1970 }
1971 }
1972 if(h != h0)
1973 clone_slice(h, h0);
1974
1975 s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
1976
1977 assert(s->mb_num == s->mb_width * s->mb_height);
1978 if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
1979 first_mb_in_slice >= s->mb_num){
1980 av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1981 return -1;
1982 }
1983 s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
1984 s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
1985 if (s->picture_structure == PICT_BOTTOM_FIELD)
1986 s->resync_mb_y = s->mb_y = s->mb_y + 1;
1987 assert(s->mb_y < s->mb_height);
1988
1989 if(s->picture_structure==PICT_FRAME){
1990 h->curr_pic_num= h->frame_num;
1991 h->max_pic_num= 1<< h->sps.log2_max_frame_num;
1992 }else{
1993 h->curr_pic_num= 2*h->frame_num + 1;
1994 h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
1995 }
1996
1997 if(h->nal_unit_type == NAL_IDR_SLICE){
1998 get_ue_golomb(&s->gb); /* idr_pic_id */
1999 }
2000
2001 if(h->sps.poc_type==0){
2002 h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
2003
2004 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
2005 h->delta_poc_bottom= get_se_golomb(&s->gb);
2006 }
2007 }
2008
2009 if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
2010 h->delta_poc[0]= get_se_golomb(&s->gb);
2011
2012 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
2013 h->delta_poc[1]= get_se_golomb(&s->gb);
2014 }
2015
2016 init_poc(h);
2017
2018 if(h->pps.redundant_pic_cnt_present){
2019 h->redundant_pic_count= get_ue_golomb(&s->gb);
2020 }
2021
2022 //set defaults, might be overridden a few lines later
2023 h->ref_count[0]= h->pps.ref_count[0];
2024 h->ref_count[1]= h->pps.ref_count[1];
2025
2026 if(h->slice_type_nos != FF_I_TYPE){
2027 if(h->slice_type_nos == FF_B_TYPE){
2028 h->direct_spatial_mv_pred= get_bits1(&s->gb);
2029 }
2030 num_ref_idx_active_override_flag= get_bits1(&s->gb);
2031
2032 if(num_ref_idx_active_override_flag){
2033 h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
2034 if(h->slice_type_nos==FF_B_TYPE)
2035 h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
2036
2037 if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
2038 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
2039 h->ref_count[0]= h->ref_count[1]= 1;
2040 return -1;
2041 }
2042 }
2043 if(h->slice_type_nos == FF_B_TYPE)
2044 h->list_count= 2;
2045 else
2046 h->list_count= 1;
2047 }else
2048 h->list_count= 0;
2049
2050 if(!default_ref_list_done){
2051 ff_h264_fill_default_ref_list(h);
2052 }
2053
2054 if(h->slice_type_nos!=FF_I_TYPE && ff_h264_decode_ref_pic_list_reordering(h) < 0)
2055 return -1;
2056
2057 if(h->slice_type_nos!=FF_I_TYPE){
2058 s->last_picture_ptr= &h->ref_list[0][0];
2059 ff_copy_picture(&s->last_picture, s->last_picture_ptr);
2060 }
2061 if(h->slice_type_nos==FF_B_TYPE){
2062 s->next_picture_ptr= &h->ref_list[1][0];
2063 ff_copy_picture(&s->next_picture, s->next_picture_ptr);
2064 }
2065
2066 if( (h->pps.weighted_pred && h->slice_type_nos == FF_P_TYPE )
2067 || (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
2068 pred_weight_table(h);
2069 else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE){
2070 implicit_weight_table(h, -1);
2071 }else {
2072 h->use_weight = 0;
2073 for (i = 0; i < 2; i++) {
2074 h->luma_weight_flag[i] = 0;
2075 h->chroma_weight_flag[i] = 0;
2076 }
2077 }
2078
2079 if(h->nal_ref_idc)
2080 ff_h264_decode_ref_pic_marking(h0, &s->gb);
2081
2082 if(FRAME_MBAFF){
2083 ff_h264_fill_mbaff_ref_list(h);
2084
2085 if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE){
2086 implicit_weight_table(h, 0);
2087 implicit_weight_table(h, 1);
2088 }
2089 }
2090
2091 if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
2092 ff_h264_direct_dist_scale_factor(h);
2093 ff_h264_direct_ref_list_init(h);
2094
2095 if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
2096 tmp = get_ue_golomb_31(&s->gb);
2097 if(tmp > 2){
2098 av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
2099 return -1;
2100 }
2101 h->cabac_init_idc= tmp;
2102 }
2103
2104 h->last_qscale_diff = 0;
2105 tmp = h->pps.init_qp + get_se_golomb(&s->gb);
2106 if(tmp>51){
2107 av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
2108 return -1;
2109 }
2110 s->qscale= tmp;
2111 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2112 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2113 //FIXME qscale / qp ... stuff
2114 if(h->slice_type == FF_SP_TYPE){
2115 get_bits1(&s->gb); /* sp_for_switch_flag */
2116 }
2117 if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
2118 get_se_golomb(&s->gb); /* slice_qs_delta */
2119 }
2120
2121 h->deblocking_filter = 1;
2122 h->slice_alpha_c0_offset = 52;
2123 h->slice_beta_offset = 52;
2124 if( h->pps.deblocking_filter_parameters_present ) {
2125 tmp= get_ue_golomb_31(&s->gb);
2126 if(tmp > 2){
2127 av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
2128 return -1;
2129 }
2130 h->deblocking_filter= tmp;
2131 if(h->deblocking_filter < 2)
2132 h->deblocking_filter^= 1; // 1<->0
2133
2134 if( h->deblocking_filter ) {
2135 h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
2136 h->slice_beta_offset += get_se_golomb(&s->gb) << 1;
2137 if( h->slice_alpha_c0_offset > 104U
2138 || h->slice_beta_offset > 104U){
2139 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);
2140 return -1;
2141 }
2142 }
2143 }
2144
2145 if( s->avctx->skip_loop_filter >= AVDISCARD_ALL
2146 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
2147 ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR && h->slice_type_nos == FF_B_TYPE)
2148 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2149 h->deblocking_filter= 0;
2150
2151 if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
2152 if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
2153 /* Cheat slightly for speed:
2154 Do not bother to deblock across slices. */
2155 h->deblocking_filter = 2;
2156 } else {
2157 h0->max_contexts = 1;
2158 if(!h0->single_decode_warning) {
2159 av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
2160 h0->single_decode_warning = 1;
2161 }
2162 if(h != h0)
2163 return 1; // deblocking switched inside frame
2164 }
2165 }
2166 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]);
2167
2168 #if 0 //FMO
2169 if( h->pps.num_slice_groups > 1 && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
2170 slice_group_change_cycle= get_bits(&s->gb, ?);
2171 #endif
2172
2173 h0->last_slice_type = slice_type;
2174 h->slice_num = ++h0->current_slice;
2175 if(h->slice_num >= MAX_SLICES){
2176 av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
2177 }
2178
2179 for(j=0; j<2; j++){
2180 int id_list[16];
2181 int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
2182 for(i=0; i<16; i++){
2183 id_list[i]= 60;
2184 if(h->ref_list[j][i].data[0]){
2185 int k;
2186 uint8_t *base= h->ref_list[j][i].base[0];
2187 for(k=0; k<h->short_ref_count; k++)
2188 if(h->short_ref[k]->base[0] == base){
2189 id_list[i]= k;
2190 break;
2191 }
2192 for(k=0; k<h->long_ref_count; k++)
2193 if(h->long_ref[k] && h->long_ref[k]->base[0] == base){
2194 id_list[i]= h->short_ref_count + k;
2195 break;
2196 }
2197 }
2198 }
2199
2200 ref2frm[0]=
2201 ref2frm[1]= -1;
2202 for(i=0; i<16; i++)
2203 ref2frm[i+2]= 4*id_list[i]
2204 +(h->ref_list[j][i].reference&3);
2205 ref2frm[18+0]=
2206 ref2frm[18+1]= -1;
2207 for(i=16; i<48; i++)
2208 ref2frm[i+4]= 4*id_list[(i-16)>>1]
2209 +(h->ref_list[j][i].reference&3);
2210 }
2211
2212 h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
2213 h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
2214
2215 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
2216 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",
2217 h->slice_num,
2218 (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
2219 first_mb_in_slice,
2220 av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
2221 pps_id, h->frame_num,
2222 s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
2223 h->ref_count[0], h->ref_count[1],
2224 s->qscale,
2225 h->deblocking_filter, h->slice_alpha_c0_offset/2-26, h->slice_beta_offset/2-26,
2226 h->use_weight,
2227 h->use_weight==1 && h->use_weight_chroma ? "c" : "",
2228 h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
2229 );
2230 }
2231
2232 return 0;
2233 }
2234
2235 int ff_h264_get_slice_type(const H264Context *h)
2236 {
2237 switch (h->slice_type) {
2238 case FF_P_TYPE: return 0;
2239 case FF_B_TYPE: return 1;
2240 case FF_I_TYPE: return 2;
2241 case FF_SP_TYPE: return 3;
2242 case FF_SI_TYPE: return 4;
2243 default: return -1;
2244 }
2245 }
2246
2247 /**
2248 *
2249 * @return non zero if the loop filter can be skiped
2250 */
2251 static int fill_filter_caches(H264Context *h, int mb_type){
2252 MpegEncContext * const s = &h->s;
2253 const int mb_xy= h->mb_xy;
2254 int top_xy, left_xy[2];
2255 int top_type, left_type[2];
2256
2257 top_xy = mb_xy - (s->mb_stride << MB_FIELD);
2258
2259 //FIXME deblocking could skip the intra and nnz parts.
2260
2261 /* Wow, what a mess, why didn't they simplify the interlacing & intra
2262 * stuff, I can't imagine that these complex rules are worth it. */
2263
2264 left_xy[1] = left_xy[0] = mb_xy-1;
2265 if(FRAME_MBAFF){
2266 const int left_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[mb_xy-1]);
2267 const int curr_mb_field_flag = IS_INTERLACED(mb_type);
2268 if(s->mb_y&1){
2269 if (left_mb_field_flag != curr_mb_field_flag) {
2270 left_xy[0] -= s->mb_stride;
2271 }
2272 }else{
2273 if(curr_mb_field_flag){
2274 top_xy += s->mb_stride & (((s->current_picture.mb_type[top_xy ]>>7)&1)-1);
2275 }
2276 if (left_mb_field_flag != curr_mb_field_flag) {
2277 left_xy[1] += s->mb_stride;
2278 }
2279 }
2280 }
2281
2282 h->top_mb_xy = top_xy;
2283 h->left_mb_xy[0] = left_xy[0];
2284 h->left_mb_xy[1] = left_xy[1];
2285 {
2286 //for sufficiently low qp, filtering wouldn't do anything
2287 //this is a conservative estimate: could also check beta_offset and more accurate chroma_qp
2288 int qp_thresh = h->qp_thresh; //FIXME strictly we should store qp_thresh for each mb of a slice
2289 int qp = s->current_picture.qscale_table[mb_xy];
2290 if(qp <= qp_thresh
2291 && (left_xy[0]<0 || ((qp + s->current_picture.qscale_table[left_xy[0]] + 1)>>1) <= qp_thresh)
2292 && (top_xy < 0 || ((qp + s->current_picture.qscale_table[top_xy ] + 1)>>1) <= qp_thresh)){
2293 if(!FRAME_MBAFF)
2294 return 1;
2295 if( (left_xy[0]< 0 || ((qp + s->current_picture.qscale_table[left_xy[1] ] + 1)>>1) <= qp_thresh)
2296 && (top_xy < s->mb_stride || ((qp + s->current_picture.qscale_table[top_xy -s->mb_stride] + 1)>>1) <= qp_thresh))
2297 return 1;
2298 }
2299 }
2300
2301 top_type = s->current_picture.mb_type[top_xy] ;
2302 left_type[0] = s->current_picture.mb_type[left_xy[0]];
2303 left_type[1] = s->current_picture.mb_type[left_xy[1]];
2304 if(h->deblocking_filter == 2){
2305 if(h->slice_table[top_xy ] != h->slice_num) top_type= 0;
2306 if(h->slice_table[left_xy[0] ] != h->slice_num) left_type[0]= left_type[1]= 0;
2307 }else{
2308 if(h->slice_table[top_xy ] == 0xFFFF) top_type= 0;
2309 if(h->slice_table[left_xy[0] ] == 0xFFFF) left_type[0]= left_type[1] =0;
2310 }
2311 h->top_type = top_type ;
2312 h->left_type[0]= left_type[0];
2313 h->left_type[1]= left_type[1];
2314
2315 if(IS_INTRA(mb_type))
2316 return 0;
2317
2318 AV_COPY64(&h->non_zero_count_cache[0+8*1], &h->non_zero_count[mb_xy][ 0]);
2319 AV_COPY64(&h->non_zero_count_cache[0+8*2], &h->non_zero_count[mb_xy][ 8]);
2320 AV_COPY32(&h->non_zero_count_cache[0+8*5], &h->non_zero_count[mb_xy][16]);
2321 AV_COPY32(&h->non_zero_count_cache[4+8*3], &h->non_zero_count[mb_xy][20]);
2322 AV_COPY64(&h->non_zero_count_cache[0+8*4], &h->non_zero_count[mb_xy][24]);
2323
2324 h->cbp= h->cbp_table[mb_xy];
2325
2326 {
2327 int list;
2328 for(list=0; list<h->list_count; list++){
2329 int8_t *ref;
2330 int y, b_stride;
2331 int16_t (*mv_dst)[2];
2332 int16_t (*mv_src)[2];
2333
2334 if(!USES_LIST(mb_type, list)){
2335 fill_rectangle( h->mv_cache[list][scan8[0]], 4, 4, 8, pack16to32(0,0), 4);
2336 AV_WN32A(&h->ref_cache[list][scan8[ 0]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2337 AV_WN32A(&h->ref_cache[list][scan8[ 2]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2338 AV_WN32A(&h->ref_cache[list][scan8[ 8]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2339 AV_WN32A(&h->ref_cache[list][scan8[10]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2340 continue;
2341 }
2342
2343 ref = &s->current_picture.ref_index[list][4*mb_xy];
2344 {
2345 int (*ref2frm)[64] = h->ref2frm[ h->slice_num&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2346 AV_WN32A(&h->ref_cache[list][scan8[ 0]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2347 AV_WN32A(&h->ref_cache[list][scan8[ 2]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2348 ref += 2;
2349 AV_WN32A(&h->ref_cache[list][scan8[ 8]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2350 AV_WN32A(&h->ref_cache[list][scan8[10]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2351 }
2352
2353 b_stride = h->b_stride;
2354 mv_dst = &h->mv_cache[list][scan8[0]];
2355 mv_src = &s->current_picture.motion_val[list][4*s->mb_x + 4*s->mb_y*b_stride];
2356 for(y=0; y<4; y++){
2357 AV_COPY128(mv_dst + 8*y, mv_src + y*b_stride);
2358 }
2359
2360 }
2361 }
2362
2363
2364 /*
2365 0 . T T. T T T T
2366 1 L . .L . . . .
2367 2 L . .L . . . .
2368 3 . T TL . . . .
2369 4 L . .L . . . .
2370 5 L . .. . . . .
2371 */
2372 //FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
2373 if(top_type){
2374 AV_COPY32(&h->non_zero_count_cache[4+8*0], &h->non_zero_count[top_xy][4+3*8]);
2375 }
2376
2377 if(left_type[0]){
2378 h->non_zero_count_cache[3+8*1]= h->non_zero_count[left_xy[0]][7+0*8];
2379 h->non_zero_count_cache[3+8*2]= h->non_zero_count[left_xy[0]][7+1*8];
2380 h->non_zero_count_cache[3+8*3]= h->non_zero_count[left_xy[0]][7+2*8];
2381 h->non_zero_count_cache[3+8*4]= h->non_zero_count[left_xy[0]][7+3*8];
2382 }
2383
2384 // CAVLC 8x8dct requires NNZ values for residual decoding that differ from what the loop filter needs
2385 if(!CABAC && h->pps.transform_8x8_mode){
2386 if(IS_8x8DCT(top_type)){
2387 h->non_zero_count_cache[4+8*0]=
2388 h->non_zero_count_cache[5+8*0]= h->cbp_table[top_xy] & 4;
2389 h->non_zero_count_cache[6+8*0]=
2390 h->non_zero_count_cache[7+8*0]= h->cbp_table[top_xy] & 8;
2391 }
2392 if(IS_8x8DCT(left_type[0])){
2393 h->non_zero_count_cache[3+8*1]=
2394 h->non_zero_count_cache[3+8*2]= h->cbp_table[left_xy[0]]&2; //FIXME check MBAFF
2395 }
2396 if(IS_8x8DCT(left_type[1])){
2397 h->non_zero_count_cache[3+8*3]=
2398 h->non_zero_count_cache[3+8*4]= h->cbp_table[left_xy[1]]&8; //FIXME check MBAFF
2399 }
2400
2401 if(IS_8x8DCT(mb_type)){
2402 h->non_zero_count_cache[scan8[0 ]]= h->non_zero_count_cache[scan8[1 ]]=
2403 h->non_zero_count_cache[scan8[2 ]]= h->non_zero_count_cache[scan8[3 ]]= h->cbp & 1;
2404
2405 h->non_zero_count_cache[scan8[0+ 4]]= h->non_zero_count_cache[scan8[1+ 4]]=
2406 h->non_zero_count_cache[scan8[2+ 4]]= h->non_zero_count_cache[scan8[3+ 4]]= h->cbp & 2;
2407
2408 h->non_zero_count_cache[scan8[0+ 8]]= h->non_zero_count_cache[scan8[1+ 8]]=
2409 h->non_zero_count_cache[scan8[2+ 8]]= h->non_zero_count_cache[scan8[3+ 8]]= h->cbp & 4;
2410
2411 h->non_zero_count_cache[scan8[0+12]]= h->non_zero_count_cache[scan8[1+12]]=
2412 h->non_zero_count_cache[scan8[2+12]]= h->non_zero_count_cache[scan8[3+12]]= h->cbp & 8;
2413 }
2414 }
2415
2416 if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
2417 int list;
2418 for(list=0; list<h->list_count; list++){
2419 if(USES_LIST(top_type, list)){
2420 const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
2421 const int b8_xy= 4*top_xy + 2;
2422 int (*ref2frm)[64] = h->ref2frm[ h->slice_table[top_xy]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2423 AV_COPY128(h->mv_cache[list][scan8[0] + 0 - 1*8], s->current_picture.motion_val[list][b_xy + 0]);
2424 h->ref_cache[list][scan8[0] + 0 - 1*8]=
2425 h->ref_cache[list][scan8[0] + 1 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 0]];
2426 h->ref_cache[list][scan8[0] + 2 - 1*8]=
2427 h->ref_cache[list][scan8[0] + 3 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 1]];
2428 }else{
2429 AV_ZERO128(h->mv_cache[list][scan8[0] + 0 - 1*8]);
2430 AV_WN32A(&h->ref_cache[list][scan8[0] + 0 - 1*8], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2431 }
2432
2433 if(!IS_INTERLACED(mb_type^left_type[0])){
2434 if(USES_LIST(left_type[0], list)){
2435 const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
2436 const int b8_xy= 4*left_xy[0] + 1;
2437 int (*ref2frm)[64] = h->ref2frm[ h->slice_table[left_xy[0]]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2438 AV_COPY32(h->mv_cache[list][scan8[0] - 1 + 0 ], s->current_picture.motion_val[list][b_xy + h->b_stride*0]);
2439 AV_COPY32(h->mv_cache[list][scan8[0] - 1 + 8 ], s->current_picture.motion_val[list][b_xy + h->b_stride*1]);
2440 AV_COPY32(h->mv_cache[list][scan8[0] - 1 +16 ], s->current_picture.motion_val[list][b_xy + h->b_stride*2]);
2441 AV_COPY32(h->mv_cache[list][scan8[0] - 1 +24 ], s->current_picture.motion_val[list][b_xy + h->b_stride*3]);
2442 h->ref_cache[list][scan8[0] - 1 + 0 ]=
2443 h->ref_cache[list][scan8[0] - 1 + 8 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 2*0]];
2444 h->ref_cache[list][scan8[0] - 1 +16 ]=
2445 h->ref_cache[list][scan8[0] - 1 +24 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 2*1]];
2446 }else{
2447 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 + 0 ]);
2448 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 + 8 ]);
2449 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 +16 ]);
2450 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 +24 ]);
2451 h->ref_cache[list][scan8[0] - 1 + 0 ]=
2452 h->ref_cache[list][scan8[0] - 1 + 8 ]=
2453 h->ref_cache[list][scan8[0] - 1 + 16 ]=
2454 h->ref_cache[list][scan8[0] - 1 + 24 ]= LIST_NOT_USED;
2455 }
2456 }
2457 }
2458 }
2459
2460 return 0;
2461 }
2462
2463 static void loop_filter(H264Context *h){
2464 MpegEncContext * const s = &h->s;
2465 uint8_t *dest_y, *dest_cb, *dest_cr;
2466 int linesize, uvlinesize, mb_x, mb_y;
2467 const int end_mb_y= s->mb_y + FRAME_MBAFF;
2468 const int old_slice_type= h->slice_type;
2469
2470 if(h->deblocking_filter) {
2471 for(mb_x= 0; mb_x<s->mb_width; mb_x++){
2472 for(mb_y=end_mb_y - FRAME_MBAFF; mb_y<= end_mb_y; mb_y++){
2473 int mb_xy, mb_type;
2474 mb_xy = h->mb_xy = mb_x + mb_y*s->mb_stride;
2475 h->slice_num= h->slice_table[mb_xy];
2476 mb_type= s->current_picture.mb_type[mb_xy];
2477 h->list_count= h->list_counts[mb_xy];
2478
2479 if(FRAME_MBAFF)
2480 h->mb_mbaff = h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2481
2482 s->mb_x= mb_x;
2483 s->mb_y= mb_y;
2484 dest_y = s->current_picture.data[0] + (mb_x + mb_y * s->linesize ) * 16;
2485 dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
2486 dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
2487 //FIXME simplify above
2488
2489 if (MB_FIELD) {
2490 linesize = h->mb_linesize = s->linesize * 2;
2491 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2492 if(mb_y&1){ //FIXME move out of this function?
2493 dest_y -= s->linesize*15;
2494 dest_cb-= s->uvlinesize*7;
2495 dest_cr-= s->uvlinesize*7;
2496 }
2497 } else {
2498 linesize = h->mb_linesize = s->linesize;
2499 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2500 }
2501 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0);
2502 if(fill_filter_caches(h, mb_type))
2503 continue;
2504 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2505 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2506
2507 if (FRAME_MBAFF) {
2508 ff_h264_filter_mb (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2509 } else {
2510 ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2511 }
2512 }
2513 }
2514 }
2515 h->slice_type= old_slice_type;
2516 s->mb_x= 0;
2517 s->mb_y= end_mb_y - FRAME_MBAFF;
2518 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2519 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2520 }
2521
2522 static void predict_field_decoding_flag(H264Context *h){
2523 MpegEncContext * const s = &h->s;
2524 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2525 int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
2526 ? s->current_picture.mb_type[mb_xy-1]
2527 : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
2528 ? s->current_picture.mb_type[mb_xy-s->mb_stride]
2529 : 0;
2530 h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2531 }
2532
2533 static int decode_slice(struct AVCodecContext *avctx, void *arg){
2534 H264Context *h = *(void**)arg;
2535 MpegEncContext * const s = &h->s;
2536 const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
2537
2538 s->mb_skip_run= -1;
2539
2540 h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
2541 (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
2542
2543 if( h->pps.cabac ) {
2544 /* realign */
2545 align_get_bits( &s->gb );
2546
2547 /* init cabac */
2548 ff_init_cabac_states( &h->cabac);
2549 ff_init_cabac_decoder( &h->cabac,
2550 s->gb.buffer + get_bits_count(&s->gb)/8,
2551 (get_bits_left(&s->gb) + 7)/8);
2552
2553 ff_h264_init_cabac_states(h);
2554
2555 for(;;){
2556 //START_TIMER
2557 int ret = ff_h264_decode_mb_cabac(h);
2558 int eos;
2559 //STOP_TIMER("decode_mb_cabac")
2560
2561 if(ret>=0) ff_h264_hl_decode_mb(h);
2562
2563 if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
2564 s->mb_y++;
2565
2566 ret = ff_h264_decode_mb_cabac(h);
2567
2568 if(ret>=0) ff_h264_hl_decode_mb(h);
2569 s->mb_y--;
2570 }
2571 eos = get_cabac_terminate( &h->cabac );
2572
2573 if((s->workaround_bugs & FF_BUG_TRUNCATED) && h->cabac.bytestream > h->cabac.bytestream_end + 2){
2574 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);
2575 return 0;
2576 }
2577 if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
2578 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);
2579 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);
2580 return -1;
2581 }
2582
2583 if( ++s->mb_x >= s->mb_width ) {
2584 s->mb_x = 0;
2585 loop_filter(h);
2586 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2587 ++s->mb_y;
2588 if(FIELD_OR_MBAFF_PICTURE) {
2589 ++s->mb_y;
2590 if(FRAME_MBAFF && s->mb_y < s->mb_height)
2591 predict_field_decoding_flag(h);
2592 }
2593 }
2594
2595 if( eos || s->mb_y >= s->mb_height ) {
2596 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2597 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);
2598 return 0;
2599 }
2600 }
2601
2602 } else {
2603 for(;;){
2604 int ret = ff_h264_decode_mb_cavlc(h);
2605
2606 if(ret>=0) ff_h264_hl_decode_mb(h);
2607
2608 if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
2609 s->mb_y++;
2610 ret = ff_h264_decode_mb_cavlc(h);
2611
2612 if(ret>=0) ff_h264_hl_decode_mb(h);
2613 s->mb_y--;
2614 }
2615
2616 if(ret<0){
2617 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2618 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);
2619
2620 return -1;
2621 }
2622
2623 if(++s->mb_x >= s->mb_width){
2624 s->mb_x=0;
2625 loop_filter(h);
2626 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2627 ++s->mb_y;
2628 if(FIELD_OR_MBAFF_PICTURE) {
2629 ++s->mb_y;
2630 if(FRAME_MBAFF && s->mb_y < s->mb_height)
2631 predict_field_decoding_flag(h);
2632 }
2633 if(s->mb_y >= s->mb_height){
2634 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2635
2636 if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
2637 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);
2638
2639 return 0;
2640 }else{
2641 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);
2642
2643 return -1;
2644 }
2645 }
2646 }
2647
2648 if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
2649 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2650 if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
2651 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);
2652
2653 return 0;
2654 }else{
2655 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);
2656
2657 return -1;
2658 }
2659 }
2660 }
2661 }
2662
2663 #if 0
2664 for(;s->mb_y < s->mb_height; s->mb_y++){
2665 for(;s->mb_x < s->mb_width; s->mb_x++){
2666 int ret= decode_mb(h);
2667
2668 ff_h264_hl_decode_mb(h);
2669
2670 if(ret<0){
2671 av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2672 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);
2673
2674 return -1;
2675 }
2676
2677 if(++s->mb_x >= s->mb_width){
2678 s->mb_x=0;
2679 if(++s->mb_y >= s->mb_height){
2680 if(get_bits_count(s->gb) == s->gb.size_in_bits){
2681 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);
2682
2683 return 0;
2684 }else{
2685 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);
2686
2687 return -1;
2688 }
2689 }
2690 }
2691
2692 if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
2693 if(get_bits_count(s->gb) == s->gb.size_in_bits){
2694 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);
2695
2696 return 0;
2697 }else{
2698 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);
2699
2700 return -1;
2701 }
2702 }
2703 }
2704 s->mb_x=0;
2705 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2706 }
2707 #endif
2708 return -1; //not reached