2 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 * @file libavcodec/h264.c
24 * H.264 / AVC / MPEG4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
31 #include "mpegvideo.h"
34 #include "h264_mvpred.h"
35 #include "h264_parser.h"
38 #include "rectangle.h"
39 #include "vdpau_internal.h"
46 static const uint8_t rem6[52]={
47 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3,
50 static const uint8_t div6[52]={
51 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
54 void ff_h264_write_back_intra_pred_mode(H264Context *h){
55 int8_t *mode= h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
57 AV_COPY32(mode, h->intra4x4_pred_mode_cache + 4 + 8*4);
58 mode[4]= h->intra4x4_pred_mode_cache[7+8*3];
59 mode[5]= h->intra4x4_pred_mode_cache[7+8*2];
60 mode[6]= h->intra4x4_pred_mode_cache[7+8*1];
64 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
66 int ff_h264_check_intra4x4_pred_mode(H264Context *h){
67 MpegEncContext * const s = &h->s;
68 static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
69 static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
72 if(!(h->top_samples_available&0x8000)){
74 int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
76 av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
79 h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
84 if((h->left_samples_available&0x8888)!=0x8888){
85 static const int mask[4]={0x8000,0x2000,0x80,0x20};
87 if(!(h->left_samples_available&mask[i])){
88 int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
90 av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
93 h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
100 } //FIXME cleanup like ff_h264_check_intra_pred_mode
103 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
105 int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
106 MpegEncContext * const s = &h->s;
107 static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
108 static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
111 av_log(h->s.avctx, AV_LOG_ERROR, "out of range intra chroma pred mode at %d %d\n", s->mb_x, s->mb_y);
115 if(!(h->top_samples_available&0x8000)){
118 av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
123 if((h->left_samples_available&0x8080) != 0x8080){
125 if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
126 mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
129 av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
137 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
142 // src[0]&0x80; //forbidden bit
143 h->nal_ref_idc= src[0]>>5;
144 h->nal_unit_type= src[0]&0x1F;
148 for(i=0; i<length; i++)
149 printf("%2X ", src[i]);
152 #if HAVE_FAST_UNALIGNED
155 for(i=0; i+1<length; i+=9){
156 if(!((~AV_RN64A(src+i) & (AV_RN64A(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
159 for(i=0; i+1<length; i+=5){
160 if(!((~AV_RN32A(src+i) & (AV_RN32A(src+i) - 0x01000101U)) & 0x80008080U))
163 if(i>0 && !src[i]) i--;
167 for(i=0; i+1<length; i+=2){
169 if(i>0 && src[i-1]==0) i--;
171 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
173 /* startcode, so we must be past the end */
181 if(i>=length-1){ //no escaped 0
183 *consumed= length+1; //+1 for the header
187 bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
188 av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
189 dst= h->rbsp_buffer[bufidx];
195 //printf("decoding esc\n");
199 //remove escapes (very rare 1:2^22)
201 dst[di++]= src[si++];
202 dst[di++]= src[si++];
203 }else if(src[si]==0 && src[si+1]==0){
204 if(src[si+2]==3){ //escape
209 }else //next start code
213 dst[di++]= src[si++];
216 dst[di++]= src[si++];
219 memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
222 *consumed= si + 1;//+1 for the header
223 //FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
227 int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
231 tprintf(h->s.avctx, "rbsp trailing %X\n", v);
241 * IDCT transforms the 16 dc values and dequantizes them.
242 * @param qp quantization parameter
244 static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
247 int temp[16]; //FIXME check if this is a good idea
248 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
249 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
251 //memset(block, 64, 2*256);
254 const int offset= y_offset[i];
255 const int z0= block[offset+stride*0] + block[offset+stride*4];
256 const int z1= block[offset+stride*0] - block[offset+stride*4];
257 const int z2= block[offset+stride*1] - block[offset+stride*5];
258 const int z3= block[offset+stride*1] + block[offset+stride*5];
267 const int offset= x_offset[i];
268 const int z0= temp[4*0+i] + temp[4*2+i];
269 const int z1= temp[4*0+i] - temp[4*2+i];
270 const int z2= temp[4*1+i] - temp[4*3+i];
271 const int z3= temp[4*1+i] + temp[4*3+i];
273 block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
274 block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
275 block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
276 block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
282 * DCT transforms the 16 dc values.
283 * @param qp quantization parameter ??? FIXME
285 static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
286 // const int qmul= dequant_coeff[qp][0];
288 int temp[16]; //FIXME check if this is a good idea
289 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
290 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
293 const int offset= y_offset[i];
294 const int z0= block[offset+stride*0] + block[offset+stride*4];
295 const int z1= block[offset+stride*0] - block[offset+stride*4];
296 const int z2= block[offset+stride*1] - block[offset+stride*5];
297 const int z3= block[offset+stride*1] + block[offset+stride*5];
306 const int offset= x_offset[i];
307 const int z0= temp[4*0+i] + temp[4*2+i];
308 const int z1= temp[4*0+i] - temp[4*2+i];
309 const int z2= temp[4*1+i] - temp[4*3+i];
310 const int z3= temp[4*1+i] + temp[4*3+i];
312 block[stride*0 +offset]= (z0 + z3)>>1;
313 block[stride*2 +offset]= (z1 + z2)>>1;
314 block[stride*8 +offset]= (z1 - z2)>>1;
315 block[stride*10+offset]= (z0 - z3)>>1;
323 static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
324 const int stride= 16*2;
325 const int xStride= 16;
328 a= block[stride*0 + xStride*0];
329 b= block[stride*0 + xStride*1];
330 c= block[stride*1 + xStride*0];
331 d= block[stride*1 + xStride*1];
338 block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
339 block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
340 block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
341 block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
345 static void chroma_dc_dct_c(DCTELEM *block){
346 const int stride= 16*2;
347 const int xStride= 16;
350 a= block[stride*0 + xStride*0];
351 b= block[stride*0 + xStride*1];
352 c= block[stride*1 + xStride*0];
353 d= block[stride*1 + xStride*1];
360 block[stride*0 + xStride*0]= (a+c);
361 block[stride*0 + xStride*1]= (e+b);
362 block[stride*1 + xStride*0]= (a-c);
363 block[stride*1 + xStride*1]= (e-b);
367 static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
368 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
369 int src_x_offset, int src_y_offset,
370 qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
371 MpegEncContext * const s = &h->s;
372 const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
373 int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
374 const int luma_xy= (mx&3) + ((my&3)<<2);
375 uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
376 uint8_t * src_cb, * src_cr;
377 int extra_width= h->emu_edge_width;
378 int extra_height= h->emu_edge_height;
380 const int full_mx= mx>>2;
381 const int full_my= my>>2;
382 const int pic_width = 16*s->mb_width;
383 const int pic_height = 16*s->mb_height >> MB_FIELD;
385 if(mx&7) extra_width -= 3;
386 if(my&7) extra_height -= 3;
388 if( full_mx < 0-extra_width
389 || full_my < 0-extra_height
390 || full_mx + 16/*FIXME*/ > pic_width + extra_width
391 || full_my + 16/*FIXME*/ > pic_height + extra_height){
392 ff_emulated_edge_mc(s->edge_emu_buffer, src_y - 2 - 2*h->mb_linesize, h->mb_linesize, 16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, pic_width, pic_height);
393 src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
397 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
399 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
402 if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
405 // chroma offset when predicting from a field of opposite parity
406 my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
407 emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
409 src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
410 src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
413 ff_emulated_edge_mc(s->edge_emu_buffer, src_cb, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
414 src_cb= s->edge_emu_buffer;
416 chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
419 ff_emulated_edge_mc(s->edge_emu_buffer, src_cr, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
420 src_cr= s->edge_emu_buffer;
422 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
425 static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
426 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
427 int x_offset, int y_offset,
428 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
429 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
430 int list0, int list1){
431 MpegEncContext * const s = &h->s;
432 qpel_mc_func *qpix_op= qpix_put;
433 h264_chroma_mc_func chroma_op= chroma_put;
435 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
436 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
437 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
438 x_offset += 8*s->mb_x;
439 y_offset += 8*(s->mb_y >> MB_FIELD);
442 Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
443 mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
444 dest_y, dest_cb, dest_cr, x_offset, y_offset,
448 chroma_op= chroma_avg;
452 Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
453 mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
454 dest_y, dest_cb, dest_cr, x_offset, y_offset,
459 static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
460 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
461 int x_offset, int y_offset,
462 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
463 h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
464 h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
465 int list0, int list1){
466 MpegEncContext * const s = &h->s;
468 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
469 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
470 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
471 x_offset += 8*s->mb_x;
472 y_offset += 8*(s->mb_y >> MB_FIELD);
475 /* don't optimize for luma-only case, since B-frames usually
476 * use implicit weights => chroma too. */
477 uint8_t *tmp_cb = s->obmc_scratchpad;
478 uint8_t *tmp_cr = s->obmc_scratchpad + 8;
479 uint8_t *tmp_y = s->obmc_scratchpad + 8*h->mb_uvlinesize;
480 int refn0 = h->ref_cache[0][ scan8[n] ];
481 int refn1 = h->ref_cache[1][ scan8[n] ];
483 mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
484 dest_y, dest_cb, dest_cr,
485 x_offset, y_offset, qpix_put, chroma_put);
486 mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
487 tmp_y, tmp_cb, tmp_cr,
488 x_offset, y_offset, qpix_put, chroma_put);
490 if(h->use_weight == 2){
491 int weight0 = h->implicit_weight[refn0][refn1];
492 int weight1 = 64 - weight0;
493 luma_weight_avg( dest_y, tmp_y, h-> mb_linesize, 5, weight0, weight1, 0);
494 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
495 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
497 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
498 h->luma_weight[0][refn0], h->luma_weight[1][refn1],
499 h->luma_offset[0][refn0] + h->luma_offset[1][refn1]);
500 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
501 h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0],
502 h->chroma_offset[0][refn0][0] + h->chroma_offset[1][refn1][0]);
503 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
504 h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1],
505 h->chroma_offset[0][refn0][1] + h->chroma_offset[1][refn1][1]);
508 int list = list1 ? 1 : 0;
509 int refn = h->ref_cache[list][ scan8[n] ];
510 Picture *ref= &h->ref_list[list][refn];
511 mc_dir_part(h, ref, n, square, chroma_height, delta, list,
512 dest_y, dest_cb, dest_cr, x_offset, y_offset,
513 qpix_put, chroma_put);
515 luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
516 h->luma_weight[list][refn], h->luma_offset[list][refn]);
517 if(h->use_weight_chroma){
518 chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
519 h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]);
520 chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
521 h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]);
526 static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
527 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
528 int x_offset, int y_offset,
529 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
530 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
531 h264_weight_func *weight_op, h264_biweight_func *weight_avg,
532 int list0, int list1){
533 if((h->use_weight==2 && list0 && list1
534 && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32))
536 mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
537 x_offset, y_offset, qpix_put, chroma_put,
538 weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
540 mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
541 x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
544 static inline void prefetch_motion(H264Context *h, int list){
545 /* fetch pixels for estimated mv 4 macroblocks ahead
546 * optimized for 64byte cache lines */
547 MpegEncContext * const s = &h->s;
548 const int refn = h->ref_cache[list][scan8[0]];
550 const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
551 const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
552 uint8_t **src= h->ref_list[list][refn].data;
553 int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
554 s->dsp.prefetch(src[0]+off, s->linesize, 4);
555 off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
556 s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
560 static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
561 qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
562 qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
563 h264_weight_func *weight_op, h264_biweight_func *weight_avg){
564 MpegEncContext * const s = &h->s;
565 const int mb_xy= h->mb_xy;
566 const int mb_type= s->current_picture.mb_type[mb_xy];
568 assert(IS_INTER(mb_type));
570 prefetch_motion(h, 0);
572 if(IS_16X16(mb_type)){
573 mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
574 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
575 weight_op, weight_avg,
576 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
577 }else if(IS_16X8(mb_type)){
578 mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
579 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
580 &weight_op[1], &weight_avg[1],
581 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
582 mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
583 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
584 &weight_op[1], &weight_avg[1],
585 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
586 }else if(IS_8X16(mb_type)){
587 mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
588 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
589 &weight_op[2], &weight_avg[2],
590 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
591 mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
592 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
593 &weight_op[2], &weight_avg[2],
594 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
598 assert(IS_8X8(mb_type));
601 const int sub_mb_type= h->sub_mb_type[i];
603 int x_offset= (i&1)<<2;
604 int y_offset= (i&2)<<1;
606 if(IS_SUB_8X8(sub_mb_type)){
607 mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
608 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
609 &weight_op[3], &weight_avg[3],
610 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
611 }else if(IS_SUB_8X4(sub_mb_type)){
612 mc_part(h, n , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
613 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
614 &weight_op[4], &weight_avg[4],
615 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
616 mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
617 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
618 &weight_op[4], &weight_avg[4],
619 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
620 }else if(IS_SUB_4X8(sub_mb_type)){
621 mc_part(h, n , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
622 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
623 &weight_op[5], &weight_avg[5],
624 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
625 mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
626 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
627 &weight_op[5], &weight_avg[5],
628 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
631 assert(IS_SUB_4X4(sub_mb_type));
633 int sub_x_offset= x_offset + 2*(j&1);
634 int sub_y_offset= y_offset + (j&2);
635 mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
636 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
637 &weight_op[6], &weight_avg[6],
638 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
644 prefetch_motion(h, 1);
648 static void free_tables(H264Context *h){
651 av_freep(&h->intra4x4_pred_mode);
652 av_freep(&h->chroma_pred_mode_table);
653 av_freep(&h->cbp_table);
654 av_freep(&h->mvd_table[0]);
655 av_freep(&h->mvd_table[1]);
656 av_freep(&h->direct_table);
657 av_freep(&h->non_zero_count);
658 av_freep(&h->slice_table_base);
659 h->slice_table= NULL;
660 av_freep(&h->list_counts);
662 av_freep(&h->mb2b_xy);
663 av_freep(&h->mb2br_xy);
665 for(i = 0; i < MAX_THREADS; i++) {
666 hx = h->thread_context[i];
668 av_freep(&hx->top_borders[1]);
669 av_freep(&hx->top_borders[0]);
670 av_freep(&hx->s.obmc_scratchpad);
671 av_freep(&hx->rbsp_buffer[1]);
672 av_freep(&hx->rbsp_buffer[0]);
673 hx->rbsp_buffer_size[0] = 0;
674 hx->rbsp_buffer_size[1] = 0;
675 if (i) av_freep(&h->thread_context[i]);
679 static void init_dequant8_coeff_table(H264Context *h){
681 const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
682 h->dequant8_coeff[0] = h->dequant8_buffer[0];
683 h->dequant8_coeff[1] = h->dequant8_buffer[1];
686 if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
687 h->dequant8_coeff[1] = h->dequant8_buffer[0];
695 h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
696 ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
697 h->pps.scaling_matrix8[i][x]) << shift;
702 static void init_dequant4_coeff_table(H264Context *h){
704 const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
706 h->dequant4_coeff[i] = h->dequant4_buffer[i];
708 if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
709 h->dequant4_coeff[i] = h->dequant4_buffer[j];
717 int shift = div6[q] + 2;
720 h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
721 ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
722 h->pps.scaling_matrix4[i][x]) << shift;
727 static void init_dequant_tables(H264Context *h){
729 init_dequant4_coeff_table(h);
730 if(h->pps.transform_8x8_mode)
731 init_dequant8_coeff_table(h);
732 if(h->sps.transform_bypass){
735 h->dequant4_coeff[i][0][x] = 1<<6;
736 if(h->pps.transform_8x8_mode)
739 h->dequant8_coeff[i][0][x] = 1<<6;
744 int ff_h264_alloc_tables(H264Context *h){
745 MpegEncContext * const s = &h->s;
746 const int big_mb_num= s->mb_stride * (s->mb_height+1);
749 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, big_mb_num * 8 * sizeof(uint8_t), fail)
751 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count , big_mb_num * 32 * sizeof(uint8_t), fail)
752 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail)
753 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail)
755 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail)
756 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 16*big_mb_num * sizeof(uint8_t), fail);
757 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 16*big_mb_num * sizeof(uint8_t), fail);
758 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 4*big_mb_num * sizeof(uint8_t) , fail);
759 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts, big_mb_num * sizeof(uint8_t), fail)
761 memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base));
762 h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
764 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy , big_mb_num * sizeof(uint32_t), fail);
765 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2br_xy , big_mb_num * sizeof(uint32_t), fail);
766 for(y=0; y<s->mb_height; y++){
767 for(x=0; x<s->mb_width; x++){
768 const int mb_xy= x + y*s->mb_stride;
769 const int b_xy = 4*x + 4*y*h->b_stride;
771 h->mb2b_xy [mb_xy]= b_xy;
772 h->mb2br_xy[mb_xy]= 8*(FMO ? mb_xy : (mb_xy % (2*s->mb_stride)));
776 s->obmc_scratchpad = NULL;
778 if(!h->dequant4_coeff[0])
779 init_dequant_tables(h);
788 * Mimic alloc_tables(), but for every context thread.
790 static void clone_tables(H264Context *dst, H264Context *src){
791 dst->intra4x4_pred_mode = src->intra4x4_pred_mode;
792 dst->non_zero_count = src->non_zero_count;
793 dst->slice_table = src->slice_table;
794 dst->cbp_table = src->cbp_table;
795 dst->mb2b_xy = src->mb2b_xy;
796 dst->mb2br_xy = src->mb2br_xy;
797 dst->chroma_pred_mode_table = src->chroma_pred_mode_table;
798 dst->mvd_table[0] = src->mvd_table[0];
799 dst->mvd_table[1] = src->mvd_table[1];
800 dst->direct_table = src->direct_table;
801 dst->list_counts = src->list_counts;
803 dst->s.obmc_scratchpad = NULL;
804 ff_h264_pred_init(&dst->hpc, src->s.codec_id);
809 * Allocate buffers which are not shared amongst multiple threads.
811 static int context_init(H264Context *h){
812 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
813 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
817 return -1; // free_tables will clean up for us
820 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size);
822 static av_cold void common_init(H264Context *h){
823 MpegEncContext * const s = &h->s;
825 s->width = s->avctx->width;
826 s->height = s->avctx->height;
827 s->codec_id= s->avctx->codec->id;
829 ff_h264_pred_init(&h->hpc, s->codec_id);
831 h->dequant_coeff_pps= -1;
832 s->unrestricted_mv=1;
835 dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
837 memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
838 memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
841 av_cold int ff_h264_decode_init(AVCodecContext *avctx){
842 H264Context *h= avctx->priv_data;
843 MpegEncContext * const s = &h->s;
845 MPV_decode_defaults(s);
850 s->out_format = FMT_H264;
851 s->workaround_bugs= avctx->workaround_bugs;
854 // s->decode_mb= ff_h263_decode_mb;
855 s->quarter_sample = 1;
856 if(!avctx->has_b_frames)
859 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
861 ff_h264_decode_init_vlc();
863 h->thread_context[0] = h;
864 h->outputed_poc = INT_MIN;
865 h->prev_poc_msb= 1<<16;
867 ff_h264_reset_sei(h);
868 if(avctx->codec_id == CODEC_ID_H264){
869 if(avctx->ticks_per_frame == 1){
870 s->avctx->time_base.den *=2;
872 avctx->ticks_per_frame = 2;
875 h->ref_cache[0][scan8[5 ]+1] = h->ref_cache[0][scan8[7 ]+1] = h->ref_cache[0][scan8[13]+1] =
876 h->ref_cache[1][scan8[5 ]+1] = h->ref_cache[1][scan8[7 ]+1] = h->ref_cache[1][scan8[13]+1] = PART_NOT_AVAILABLE;
879 if(avctx->extradata_size > 0 && avctx->extradata && *(char *)avctx->extradata == 1){
881 unsigned char *p = avctx->extradata;
885 if(avctx->extradata_size < 7) {
886 av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
889 /* sps and pps in the avcC always have length coded with 2 bytes,
890 so put a fake nal_length_size = 2 while parsing them */
891 h->nal_length_size = 2;
892 // Decode sps from avcC
893 cnt = *(p+5) & 0x1f; // Number of sps
895 for (i = 0; i < cnt; i++) {
896 nalsize = AV_RB16(p) + 2;
897 if(decode_nal_units(h, p, nalsize) < 0) {
898 av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
903 // Decode pps from avcC
904 cnt = *(p++); // Number of pps
905 for (i = 0; i < cnt; i++) {
906 nalsize = AV_RB16(p) + 2;
907 if(decode_nal_units(h, p, nalsize) != nalsize) {
908 av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
913 // Now store right nal length size, that will be use to parse all other nals
914 h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
917 if(decode_nal_units(h, s->avctx->extradata, s->avctx->extradata_size) < 0)
920 if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames < h->sps.num_reorder_frames){
921 s->avctx->has_b_frames = h->sps.num_reorder_frames;
928 int ff_h264_frame_start(H264Context *h){
929 MpegEncContext * const s = &h->s;
932 if(MPV_frame_start(s, s->avctx) < 0)
934 ff_er_frame_start(s);
936 * MPV_frame_start uses pict_type to derive key_frame.
937 * This is incorrect for H.264; IDR markings must be used.
938 * Zero here; IDR markings per slice in frame or fields are ORed in later.
939 * See decode_nal_units().
941 s->current_picture_ptr->key_frame= 0;
942 s->current_picture_ptr->mmco_reset= 0;
944 assert(s->linesize && s->uvlinesize);
947 h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
948 h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
951 h->block_offset[16+i]=
952 h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
953 h->block_offset[24+16+i]=
954 h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
957 /* can't be in alloc_tables because linesize isn't known there.
958 * FIXME: redo bipred weight to not require extra buffer? */
959 for(i = 0; i < s->avctx->thread_count; i++)
960 if(!h->thread_context[i]->s.obmc_scratchpad)
961 h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
963 /* some macroblocks will be accessed before they're available */
964 if(FRAME_MBAFF || s->avctx->thread_count > 1)
965 memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
967 // s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
969 // We mark the current picture as non-reference after allocating it, so
970 // that if we break out due to an error it can be released automatically
971 // in the next MPV_frame_start().
972 // SVQ3 as well as most other codecs have only last/next/current and thus
973 // get released even with set reference, besides SVQ3 and others do not
974 // mark frames as reference later "naturally".
975 if(s->codec_id != CODEC_ID_SVQ3)
976 s->current_picture_ptr->reference= 0;
978 s->current_picture_ptr->field_poc[0]=
979 s->current_picture_ptr->field_poc[1]= INT_MAX;
980 assert(s->current_picture_ptr->long_ref==0);
985 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){
986 MpegEncContext * const s = &h->s;
991 src_cb -= uvlinesize;
992 src_cr -= uvlinesize;
994 if(!simple && FRAME_MBAFF){
997 top_border = h->top_borders[0][s->mb_x];
998 AV_COPY128(top_border, src_y + 15*linesize);
999 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1000 AV_COPY64(top_border+16, src_cb+7*uvlinesize);
1001 AV_COPY64(top_border+24, src_cr+7*uvlinesize);
1010 top_border = h->top_borders[top_idx][s->mb_x];
1011 // There are two lines saved, the line above the the top macroblock of a pair,
1012 // and the line above the bottom macroblock
1013 AV_COPY128(top_border, src_y + 16*linesize);
1015 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1016 AV_COPY64(top_border+16, src_cb+8*uvlinesize);
1017 AV_COPY64(top_border+24, src_cr+8*uvlinesize);
1021 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){
1022 MpegEncContext * const s = &h->s;
1026 uint8_t *top_border_m1;
1027 uint8_t *top_border;
1029 if(!simple && FRAME_MBAFF){
1034 top_idx = MB_MBAFF ? 0 : 1;
1038 if(h->deblocking_filter == 2) {
1039 deblock_left = h->left_type[0];
1040 deblock_top = h->top_type;
1042 deblock_left = (s->mb_x > 0);
1043 deblock_top = (s->mb_y > !!MB_FIELD);
1046 src_y -= linesize + 1;
1047 src_cb -= uvlinesize + 1;
1048 src_cr -= uvlinesize + 1;
1050 top_border_m1 = h->top_borders[top_idx][s->mb_x-1];
1051 top_border = h->top_borders[top_idx][s->mb_x];
1053 #define XCHG(a,b,xchg)\
1054 if (xchg) AV_SWAP64(b,a);\
1055 else AV_COPY64(b,a);
1059 XCHG(top_border_m1+8, src_y -7, 1);
1061 XCHG(top_border+0, src_y +1, xchg);
1062 XCHG(top_border+8, src_y +9, 1);
1063 if(s->mb_x+1 < s->mb_width){
1064 XCHG(h->top_borders[top_idx][s->mb_x+1], src_y +17, 1);
1068 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1071 XCHG(top_border_m1+16, src_cb -7, 1);
1072 XCHG(top_border_m1+24, src_cr -7, 1);
1074 XCHG(top_border+16, src_cb+1, 1);
1075 XCHG(top_border+24, src_cr+1, 1);
1080 static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
1081 MpegEncContext * const s = &h->s;
1082 const int mb_x= s->mb_x;
1083 const int mb_y= s->mb_y;
1084 const int mb_xy= h->mb_xy;
1085 const int mb_type= s->current_picture.mb_type[mb_xy];
1086 uint8_t *dest_y, *dest_cb, *dest_cr;
1087 int linesize, uvlinesize /*dct_offset*/;
1089 int *block_offset = &h->block_offset[0];
1090 const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
1091 /* is_h264 should always be true if SVQ3 is disabled. */
1092 const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
1093 void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1094 void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1096 dest_y = s->current_picture.data[0] + (mb_x + mb_y * s->linesize ) * 16;
1097 dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
1098 dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
1100 s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
1101 s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
1103 h->list_counts[mb_xy]= h->list_count;
1105 if (!simple && MB_FIELD) {
1106 linesize = h->mb_linesize = s->linesize * 2;
1107 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
1108 block_offset = &h->block_offset[24];
1109 if(mb_y&1){ //FIXME move out of this function?
1110 dest_y -= s->linesize*15;
1111 dest_cb-= s->uvlinesize*7;
1112 dest_cr-= s->uvlinesize*7;
1116 for(list=0; list<h->list_count; list++){
1117 if(!USES_LIST(mb_type, list))
1119 if(IS_16X16(mb_type)){
1120 int8_t *ref = &h->ref_cache[list][scan8[0]];
1121 fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
1123 for(i=0; i<16; i+=4){
1124 int ref = h->ref_cache[list][scan8[i]];
1126 fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
1132 linesize = h->mb_linesize = s->linesize;
1133 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
1134 // dct_offset = s->linesize * 16;
1137 if (!simple && IS_INTRA_PCM(mb_type)) {
1138 for (i=0; i<16; i++) {
1139 memcpy(dest_y + i* linesize, h->mb + i*8, 16);
1141 for (i=0; i<8; i++) {
1142 memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4, 8);
1143 memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4, 8);
1146 if(IS_INTRA(mb_type)){
1147 if(h->deblocking_filter)
1148 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
1150 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1151 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
1152 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
1155 if(IS_INTRA4x4(mb_type)){
1156 if(simple || !s->encoding){
1157 if(IS_8x8DCT(mb_type)){
1158 if(transform_bypass){
1160 idct_add = s->dsp.add_pixels8;
1162 idct_dc_add = s->dsp.h264_idct8_dc_add;
1163 idct_add = s->dsp.h264_idct8_add;
1165 for(i=0; i<16; i+=4){
1166 uint8_t * const ptr= dest_y + block_offset[i];
1167 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1168 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1169 h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
1171 const int nnz = h->non_zero_count_cache[ scan8[i] ];
1172 h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
1173 (h->topright_samples_available<<i)&0x4000, linesize);
1175 if(nnz == 1 && h->mb[i*16])
1176 idct_dc_add(ptr, h->mb + i*16, linesize);
1178 idct_add (ptr, h->mb + i*16, linesize);
1183 if(transform_bypass){
1185 idct_add = s->dsp.add_pixels4;
1187 idct_dc_add = s->dsp.h264_idct_dc_add;
1188 idct_add = s->dsp.h264_idct_add;
1190 for(i=0; i<16; i++){
1191 uint8_t * const ptr= dest_y + block_offset[i];
1192 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1194 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1195 h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
1199 if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
1200 const int topright_avail= (h->topright_samples_available<<i)&0x8000;
1201 assert(mb_y || linesize <= block_offset[i]);
1202 if(!topright_avail){
1203 tr= ptr[3 - linesize]*0x01010101;
1204 topright= (uint8_t*) &tr;
1206 topright= ptr + 4 - linesize;
1210 h->hpc.pred4x4[ dir ](ptr, topright, linesize);
1211 nnz = h->non_zero_count_cache[ scan8[i] ];
1214 if(nnz == 1 && h->mb[i*16])
1215 idct_dc_add(ptr, h->mb + i*16, linesize);
1217 idct_add (ptr, h->mb + i*16, linesize);
1219 ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
1226 h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
1228 if(!transform_bypass)
1229 h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
1231 ff_svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
1233 if(h->deblocking_filter)
1234 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
1236 hl_motion(h, dest_y, dest_cb, dest_cr,
1237 s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1238 s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1239 s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
1243 if(!IS_INTRA4x4(mb_type)){
1245 if(IS_INTRA16x16(mb_type)){
1246 if(transform_bypass){
1247 if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
1248 h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
1250 for(i=0; i<16; i++){
1251 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1252 s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
1256 s->dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1258 }else if(h->cbp&15){
1259 if(transform_bypass){
1260 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1261 idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
1262 for(i=0; i<16; i+=di){
1263 if(h->non_zero_count_cache[ scan8[i] ]){
1264 idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
1268 if(IS_8x8DCT(mb_type)){
1269 s->dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1271 s->dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1276 for(i=0; i<16; i++){
1277 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
1278 uint8_t * const ptr= dest_y + block_offset[i];
1279 ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1285 if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
1286 uint8_t *dest[2] = {dest_cb, dest_cr};
1287 if(transform_bypass){
1288 if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
1289 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
1290 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
1292 idct_add = s->dsp.add_pixels4;
1293 for(i=16; i<16+8; i++){
1294 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1295 idct_add (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1299 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]);
1300 chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp[1], h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]);
1302 idct_add = s->dsp.h264_idct_add;
1303 idct_dc_add = s->dsp.h264_idct_dc_add;
1304 for(i=16; i<16+8; i++){
1305 if(h->non_zero_count_cache[ scan8[i] ])
1306 idct_add (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1307 else if(h->mb[i*16])
1308 idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1311 for(i=16; i<16+8; i++){
1312 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
1313 uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
1314 ff_svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[s->qscale + 12] - 12, 2);
1321 if(h->cbp || IS_INTRA(mb_type))
1322 s->dsp.clear_blocks(h->mb);
1326 * Process a macroblock; this case avoids checks for expensive uncommon cases.
1328 static void hl_decode_mb_simple(H264Context *h){
1329 hl_decode_mb_internal(h, 1);
1333 * Process a macroblock; this handles edge cases, such as interlacing.
1335 static void av_noinline hl_decode_mb_complex(H264Context *h){
1336 hl_decode_mb_internal(h, 0);
1339 void ff_h264_hl_decode_mb(H264Context *h){
1340 MpegEncContext * const s = &h->s;
1341 const int mb_xy= h->mb_xy;
1342 const int mb_type= s->current_picture.mb_type[mb_xy];
1343 int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1346 hl_decode_mb_complex(h);
1347 else hl_decode_mb_simple(h);
1350 static int pred_weight_table(H264Context *h){
1351 MpegEncContext * const s = &h->s;
1353 int luma_def, chroma_def;
1356 h->use_weight_chroma= 0;
1357 h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
1358 h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
1359 luma_def = 1<<h->luma_log2_weight_denom;
1360 chroma_def = 1<<h->chroma_log2_weight_denom;
1362 for(list=0; list<2; list++){
1363 h->luma_weight_flag[list] = 0;
1364 h->chroma_weight_flag[list] = 0;
1365 for(i=0; i<h->ref_count[list]; i++){
1366 int luma_weight_flag, chroma_weight_flag;
1368 luma_weight_flag= get_bits1(&s->gb);
1369 if(luma_weight_flag){
1370 h->luma_weight[list][i]= get_se_golomb(&s->gb);
1371 h->luma_offset[list][i]= get_se_golomb(&s->gb);
1372 if( h->luma_weight[list][i] != luma_def
1373 || h->luma_offset[list][i] != 0) {
1375 h->luma_weight_flag[list]= 1;
1378 h->luma_weight[list][i]= luma_def;
1379 h->luma_offset[list][i]= 0;
1383 chroma_weight_flag= get_bits1(&s->gb);
1384 if(chroma_weight_flag){
1387 h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
1388 h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
1389 if( h->chroma_weight[list][i][j] != chroma_def
1390 || h->chroma_offset[list][i][j] != 0) {
1391 h->use_weight_chroma= 1;
1392 h->chroma_weight_flag[list]= 1;
1398 h->chroma_weight[list][i][j]= chroma_def;
1399 h->chroma_offset[list][i][j]= 0;
1404 if(h->slice_type_nos != FF_B_TYPE) break;
1406 h->use_weight= h->use_weight || h->use_weight_chroma;
1410 static void implicit_weight_table(H264Context *h){
1411 MpegEncContext * const s = &h->s;
1413 int cur_poc = s->current_picture_ptr->poc;
1415 for (i = 0; i < 2; i++) {
1416 h->luma_weight_flag[i] = 0;
1417 h->chroma_weight_flag[i] = 0;
1420 if( h->ref_count[0] == 1 && h->ref_count[1] == 1
1421 && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
1423 h->use_weight_chroma= 0;
1428 h->use_weight_chroma= 2;
1429 h->luma_log2_weight_denom= 5;
1430 h->chroma_log2_weight_denom= 5;
1432 for(ref0=0; ref0 < h->ref_count[0]; ref0++){
1433 int poc0 = h->ref_list[0][ref0].poc;
1434 for(ref1=0; ref1 < h->ref_count[1]; ref1++){
1435 int poc1 = h->ref_list[1][ref1].poc;
1436 int td = av_clip(poc1 - poc0, -128, 127);
1438 int tb = av_clip(cur_poc - poc0, -128, 127);
1439 int tx = (16384 + (FFABS(td) >> 1)) / td;
1440 int dist_scale_factor = av_clip((tb*tx + 32) >> 6, -1024, 1023) >> 2;
1441 if(dist_scale_factor < -64 || dist_scale_factor > 128)
1442 h->implicit_weight[ref0][ref1] = 32;
1444 h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor;
1446 h->implicit_weight[ref0][ref1] = 32;
1452 * instantaneous decoder refresh.
1454 static void idr(H264Context *h){
1455 ff_h264_remove_all_refs(h);
1456 h->prev_frame_num= 0;
1457 h->prev_frame_num_offset= 0;
1462 /* forget old pics after a seek */
1463 static void flush_dpb(AVCodecContext *avctx){
1464 H264Context *h= avctx->priv_data;
1466 for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
1467 if(h->delayed_pic[i])
1468 h->delayed_pic[i]->reference= 0;
1469 h->delayed_pic[i]= NULL;
1471 h->outputed_poc= INT_MIN;
1472 h->prev_interlaced_frame = 1;
1474 if(h->s.current_picture_ptr)
1475 h->s.current_picture_ptr->reference= 0;
1476 h->s.first_field= 0;
1477 ff_h264_reset_sei(h);
1478 ff_mpeg_flush(avctx);
1481 static int init_poc(H264Context *h){
1482 MpegEncContext * const s = &h->s;
1483 const int max_frame_num= 1<<h->sps.log2_max_frame_num;
1485 Picture *cur = s->current_picture_ptr;
1487 h->frame_num_offset= h->prev_frame_num_offset;
1488 if(h->frame_num < h->prev_frame_num)
1489 h->frame_num_offset += max_frame_num;
1491 if(h->sps.poc_type==0){
1492 const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
1494 if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
1495 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
1496 else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
1497 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
1499 h->poc_msb = h->prev_poc_msb;
1500 //printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
1502 field_poc[1] = h->poc_msb + h->poc_lsb;
1503 if(s->picture_structure == PICT_FRAME)
1504 field_poc[1] += h->delta_poc_bottom;
1505 }else if(h->sps.poc_type==1){
1506 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
1509 if(h->sps.poc_cycle_length != 0)
1510 abs_frame_num = h->frame_num_offset + h->frame_num;
1514 if(h->nal_ref_idc==0 && abs_frame_num > 0)
1517 expected_delta_per_poc_cycle = 0;
1518 for(i=0; i < h->sps.poc_cycle_length; i++)
1519 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
1521 if(abs_frame_num > 0){
1522 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
1523 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
1525 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
1526 for(i = 0; i <= frame_num_in_poc_cycle; i++)
1527 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
1531 if(h->nal_ref_idc == 0)
1532 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
1534 field_poc[0] = expectedpoc + h->delta_poc[0];
1535 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
1537 if(s->picture_structure == PICT_FRAME)
1538 field_poc[1] += h->delta_poc[1];
1540 int poc= 2*(h->frame_num_offset + h->frame_num);
1549 if(s->picture_structure != PICT_BOTTOM_FIELD)
1550 s->current_picture_ptr->field_poc[0]= field_poc[0];
1551 if(s->picture_structure != PICT_TOP_FIELD)
1552 s->current_picture_ptr->field_poc[1]= field_poc[1];
1553 cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
1560 * initialize scan tables
1562 static void init_scan_tables(H264Context *h){
1563 MpegEncContext * const s = &h->s;
1565 if(s->dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
1566 memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
1567 memcpy(h-> field_scan, field_scan, 16*sizeof(uint8_t));
1569 for(i=0; i<16; i++){
1570 #define T(x) (x>>2) | ((x<<2) & 0xF)
1571 h->zigzag_scan[i] = T(zigzag_scan[i]);
1572 h-> field_scan[i] = T( field_scan[i]);
1576 if(s->dsp.h264_idct8_add == ff_h264_idct8_add_c){
1577 memcpy(h->zigzag_scan8x8, ff_zigzag_direct, 64*sizeof(uint8_t));
1578 memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
1579 memcpy(h->field_scan8x8, field_scan8x8, 64*sizeof(uint8_t));
1580 memcpy(h->field_scan8x8_cavlc, field_scan8x8_cavlc, 64*sizeof(uint8_t));
1582 for(i=0; i<64; i++){
1583 #define T(x) (x>>3) | ((x&7)<<3)
1584 h->zigzag_scan8x8[i] = T(ff_zigzag_direct[i]);
1585 h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
1586 h->field_scan8x8[i] = T(field_scan8x8[i]);
1587 h->field_scan8x8_cavlc[i] = T(field_scan8x8_cavlc[i]);
1591 if(h->sps.transform_bypass){ //FIXME same ugly
1592 h->zigzag_scan_q0 = zigzag_scan;
1593 h->zigzag_scan8x8_q0 = ff_zigzag_direct;
1594 h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
1595 h->field_scan_q0 = field_scan;
1596 h->field_scan8x8_q0 = field_scan8x8;
1597 h->field_scan8x8_cavlc_q0 = field_scan8x8_cavlc;
1599 h->zigzag_scan_q0 = h->zigzag_scan;
1600 h->zigzag_scan8x8_q0 = h->zigzag_scan8x8;
1601 h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
1602 h->field_scan_q0 = h->field_scan;
1603 h->field_scan8x8_q0 = h->field_scan8x8;
1604 h->field_scan8x8_cavlc_q0 = h->field_scan8x8_cavlc;
1608 static void field_end(H264Context *h){
1609 MpegEncContext * const s = &h->s;
1610 AVCodecContext * const avctx= s->avctx;
1613 s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
1614 s->current_picture_ptr->pict_type= s->pict_type;
1616 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1617 ff_vdpau_h264_set_reference_frames(s);
1620 ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1621 h->prev_poc_msb= h->poc_msb;
1622 h->prev_poc_lsb= h->poc_lsb;
1624 h->prev_frame_num_offset= h->frame_num_offset;
1625 h->prev_frame_num= h->frame_num;
1627 if (avctx->hwaccel) {
1628 if (avctx->hwaccel->end_frame(avctx) < 0)
1629 av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
1632 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1633 ff_vdpau_h264_picture_complete(s);
1636 * FIXME: Error handling code does not seem to support interlaced
1637 * when slices span multiple rows
1638 * The ff_er_add_slice calls don't work right for bottom
1639 * fields; they cause massive erroneous error concealing
1640 * Error marking covers both fields (top and bottom).
1641 * This causes a mismatched s->error_count
1642 * and a bad error table. Further, the error count goes to
1643 * INT_MAX when called for bottom field, because mb_y is
1644 * past end by one (callers fault) and resync_mb_y != 0
1645 * causes problems for the first MB line, too.
1656 * Replicates H264 "master" context to thread contexts.
1658 static void clone_slice(H264Context *dst, H264Context *src)
1660 memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset));
1661 dst->s.current_picture_ptr = src->s.current_picture_ptr;
1662 dst->s.current_picture = src->s.current_picture;
1663 dst->s.linesize = src->s.linesize;
1664 dst->s.uvlinesize = src->s.uvlinesize;
1665 dst->s.first_field = src->s.first_field;
1667 dst->prev_poc_msb = src->prev_poc_msb;
1668 dst->prev_poc_lsb = src->prev_poc_lsb;
1669 dst->prev_frame_num_offset = src->prev_frame_num_offset;
1670 dst->prev_frame_num = src->prev_frame_num;
1671 dst->short_ref_count = src->short_ref_count;
1673 memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref));
1674 memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref));
1675 memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
1676 memcpy(dst->ref_list, src->ref_list, sizeof(dst->ref_list));
1678 memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff));
1679 memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff));
1683 * decodes a slice header.
1684 * This will also call MPV_common_init() and frame_start() as needed.
1686 * @param h h264context
1687 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
1689 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
1691 static int decode_slice_header(H264Context *h, H264Context *h0){
1692 MpegEncContext * const s = &h->s;
1693 MpegEncContext * const s0 = &h0->s;
1694 unsigned int first_mb_in_slice;
1695 unsigned int pps_id;
1696 int num_ref_idx_active_override_flag;
1697 unsigned int slice_type, tmp, i, j;
1698 int default_ref_list_done = 0;
1699 int last_pic_structure;
1701 s->dropable= h->nal_ref_idc == 0;
1703 if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
1704 s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
1705 s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
1707 s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
1708 s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
1711 first_mb_in_slice= get_ue_golomb(&s->gb);
1713 if(first_mb_in_slice == 0){ //FIXME better field boundary detection
1714 if(h0->current_slice && FIELD_PICTURE){
1718 h0->current_slice = 0;
1719 if (!s0->first_field)
1720 s->current_picture_ptr= NULL;
1723 slice_type= get_ue_golomb_31(&s->gb);
1725 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);
1730 h->slice_type_fixed=1;
1732 h->slice_type_fixed=0;
1734 slice_type= golomb_to_pict_type[ slice_type ];
1735 if (slice_type == FF_I_TYPE
1736 || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
1737 default_ref_list_done = 1;
1739 h->slice_type= slice_type;
1740 h->slice_type_nos= slice_type & 3;
1742 s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
1744 pps_id= get_ue_golomb(&s->gb);
1745 if(pps_id>=MAX_PPS_COUNT){
1746 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
1749 if(!h0->pps_buffers[pps_id]) {
1750 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
1753 h->pps= *h0->pps_buffers[pps_id];
1755 if(!h0->sps_buffers[h->pps.sps_id]) {
1756 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
1759 h->sps = *h0->sps_buffers[h->pps.sps_id];
1761 if(h == h0 && h->dequant_coeff_pps != pps_id){
1762 h->dequant_coeff_pps = pps_id;
1763 init_dequant_tables(h);
1766 s->mb_width= h->sps.mb_width;
1767 s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
1769 h->b_stride= s->mb_width*4;
1771 s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
1772 if(h->sps.frame_mbs_only_flag)
1773 s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
1775 s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
1777 if (s->context_initialized
1778 && ( s->width != s->avctx->width || s->height != s->avctx->height)) {
1780 return -1; // width / height changed during parallelized decoding
1782 flush_dpb(s->avctx);
1785 if (!s->context_initialized) {
1787 return -1; // we cant (re-)initialize context during parallel decoding
1789 avcodec_set_dimensions(s->avctx, s->width, s->height);
1790 s->avctx->sample_aspect_ratio= h->sps.sar;
1791 if(!s->avctx->sample_aspect_ratio.den)
1792 s->avctx->sample_aspect_ratio.den = 1;
1794 if(h->sps.video_signal_type_present_flag){
1795 s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
1796 if(h->sps.colour_description_present_flag){
1797 s->avctx->color_primaries = h->sps.color_primaries;
1798 s->avctx->color_trc = h->sps.color_trc;
1799 s->avctx->colorspace = h->sps.colorspace;
1803 if(h->sps.timing_info_present_flag){
1804 int64_t den= h->sps.time_scale;
1805 if(h->x264_build < 44U)
1807 av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
1808 h->sps.num_units_in_tick, den, 1<<30);
1810 s->avctx->pix_fmt = s->avctx->get_format(s->avctx, s->avctx->codec->pix_fmts);
1811 s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
1813 if (MPV_common_init(s) < 0)
1816 h->prev_interlaced_frame = 1;
1818 init_scan_tables(h);
1819 ff_h264_alloc_tables(h);
1821 for(i = 1; i < s->avctx->thread_count; i++) {
1823 c = h->thread_context[i] = av_malloc(sizeof(H264Context));
1824 memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
1825 memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
1828 init_scan_tables(c);
1832 for(i = 0; i < s->avctx->thread_count; i++)
1833 if(context_init(h->thread_context[i]) < 0)
1837 h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
1840 h->mb_aff_frame = 0;
1841 last_pic_structure = s0->picture_structure;
1842 if(h->sps.frame_mbs_only_flag){
1843 s->picture_structure= PICT_FRAME;
1845 if(get_bits1(&s->gb)) { //field_pic_flag
1846 s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
1848 s->picture_structure= PICT_FRAME;
1849 h->mb_aff_frame = h->sps.mb_aff;
1852 h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
1854 if(h0->current_slice == 0){
1855 while(h->frame_num != h->prev_frame_num &&
1856 h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
1857 av_log(NULL, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
1858 if (ff_h264_frame_start(h) < 0)
1860 h->prev_frame_num++;
1861 h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
1862 s->current_picture_ptr->frame_num= h->prev_frame_num;
1863 ff_h264_execute_ref_pic_marking(h, NULL, 0);
1866 /* See if we have a decoded first field looking for a pair... */
1867 if (s0->first_field) {
1868 assert(s0->current_picture_ptr);
1869 assert(s0->current_picture_ptr->data[0]);
1870 assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
1872 /* figure out if we have a complementary field pair */
1873 if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
1875 * Previous field is unmatched. Don't display it, but let it
1876 * remain for reference if marked as such.
1878 s0->current_picture_ptr = NULL;
1879 s0->first_field = FIELD_PICTURE;
1882 if (h->nal_ref_idc &&
1883 s0->current_picture_ptr->reference &&
1884 s0->current_picture_ptr->frame_num != h->frame_num) {
1886 * This and previous field were reference, but had
1887 * different frame_nums. Consider this field first in
1888 * pair. Throw away previous field except for reference
1891 s0->first_field = 1;
1892 s0->current_picture_ptr = NULL;
1895 /* Second field in complementary pair */
1896 s0->first_field = 0;
1901 /* Frame or first field in a potentially complementary pair */
1902 assert(!s0->current_picture_ptr);
1903 s0->first_field = FIELD_PICTURE;
1906 if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) {
1907 s0->first_field = 0;
1914 s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
1916 assert(s->mb_num == s->mb_width * s->mb_height);
1917 if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
1918 first_mb_in_slice >= s->mb_num){
1919 av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1922 s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
1923 s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
1924 if (s->picture_structure == PICT_BOTTOM_FIELD)
1925 s->resync_mb_y = s->mb_y = s->mb_y + 1;
1926 assert(s->mb_y < s->mb_height);
1928 if(s->picture_structure==PICT_FRAME){
1929 h->curr_pic_num= h->frame_num;
1930 h->max_pic_num= 1<< h->sps.log2_max_frame_num;
1932 h->curr_pic_num= 2*h->frame_num + 1;
1933 h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
1936 if(h->nal_unit_type == NAL_IDR_SLICE){
1937 get_ue_golomb(&s->gb); /* idr_pic_id */
1940 if(h->sps.poc_type==0){
1941 h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
1943 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
1944 h->delta_poc_bottom= get_se_golomb(&s->gb);
1948 if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
1949 h->delta_poc[0]= get_se_golomb(&s->gb);
1951 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
1952 h->delta_poc[1]= get_se_golomb(&s->gb);
1957 if(h->pps.redundant_pic_cnt_present){
1958 h->redundant_pic_count= get_ue_golomb(&s->gb);
1961 //set defaults, might be overridden a few lines later
1962 h->ref_count[0]= h->pps.ref_count[0];
1963 h->ref_count[1]= h->pps.ref_count[1];
1965 if(h->slice_type_nos != FF_I_TYPE){
1966 if(h->slice_type_nos == FF_B_TYPE){
1967 h->direct_spatial_mv_pred= get_bits1(&s->gb);
1969 num_ref_idx_active_override_flag= get_bits1(&s->gb);
1971 if(num_ref_idx_active_override_flag){
1972 h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
1973 if(h->slice_type_nos==FF_B_TYPE)
1974 h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
1976 if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
1977 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
1978 h->ref_count[0]= h->ref_count[1]= 1;
1982 if(h->slice_type_nos == FF_B_TYPE)
1989 if(!default_ref_list_done){
1990 ff_h264_fill_default_ref_list(h);
1993 if(h->slice_type_nos!=FF_I_TYPE && ff_h264_decode_ref_pic_list_reordering(h) < 0)
1996 if(h->slice_type_nos!=FF_I_TYPE){
1997 s->last_picture_ptr= &h->ref_list[0][0];
1998 ff_copy_picture(&s->last_picture, s->last_picture_ptr);
2000 if(h->slice_type_nos==FF_B_TYPE){
2001 s->next_picture_ptr= &h->ref_list[1][0];
2002 ff_copy_picture(&s->next_picture, s->next_picture_ptr);
2005 if( (h->pps.weighted_pred && h->slice_type_nos == FF_P_TYPE )
2006 || (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
2007 pred_weight_table(h);
2008 else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE)
2009 implicit_weight_table(h);
2012 for (i = 0; i < 2; i++) {
2013 h->luma_weight_flag[i] = 0;
2014 h->chroma_weight_flag[i] = 0;
2019 ff_h264_decode_ref_pic_marking(h0, &s->gb);
2022 ff_h264_fill_mbaff_ref_list(h);
2024 if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
2025 ff_h264_direct_dist_scale_factor(h);
2026 ff_h264_direct_ref_list_init(h);
2028 if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
2029 tmp = get_ue_golomb_31(&s->gb);
2031 av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
2034 h->cabac_init_idc= tmp;
2037 h->last_qscale_diff = 0;
2038 tmp = h->pps.init_qp + get_se_golomb(&s->gb);
2040 av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
2044 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2045 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2046 //FIXME qscale / qp ... stuff
2047 if(h->slice_type == FF_SP_TYPE){
2048 get_bits1(&s->gb); /* sp_for_switch_flag */
2050 if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
2051 get_se_golomb(&s->gb); /* slice_qs_delta */
2054 h->deblocking_filter = 1;
2055 h->slice_alpha_c0_offset = 52;
2056 h->slice_beta_offset = 52;
2057 if( h->pps.deblocking_filter_parameters_present ) {
2058 tmp= get_ue_golomb_31(&s->gb);
2060 av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
2063 h->deblocking_filter= tmp;
2064 if(h->deblocking_filter < 2)
2065 h->deblocking_filter^= 1; // 1<->0
2067 if( h->deblocking_filter ) {
2068 h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
2069 h->slice_beta_offset += get_se_golomb(&s->gb) << 1;
2070 if( h->slice_alpha_c0_offset > 104U
2071 || h->slice_beta_offset > 104U){
2072 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);
2078 if( s->avctx->skip_loop_filter >= AVDISCARD_ALL
2079 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
2080 ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR && h->slice_type_nos == FF_B_TYPE)
2081 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2082 h->deblocking_filter= 0;
2084 if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
2085 if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
2086 /* Cheat slightly for speed:
2087 Do not bother to deblock across slices. */
2088 h->deblocking_filter = 2;
2090 h0->max_contexts = 1;
2091 if(!h0->single_decode_warning) {
2092 av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
2093 h0->single_decode_warning = 1;
2096 return 1; // deblocking switched inside frame
2099 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]);
2102 if( h->pps.num_slice_groups > 1 && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
2103 slice_group_change_cycle= get_bits(&s->gb, ?);
2106 h0->last_slice_type = slice_type;
2107 h->slice_num = ++h0->current_slice;
2108 if(h->slice_num >= MAX_SLICES){
2109 av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
2114 int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
2115 for(i=0; i<16; i++){
2117 if(h->ref_list[j][i].data[0]){
2119 uint8_t *base= h->ref_list[j][i].base[0];
2120 for(k=0; k<h->short_ref_count; k++)
2121 if(h->short_ref[k]->base[0] == base){
2125 for(k=0; k<h->long_ref_count; k++)
2126 if(h->long_ref[k] && h->long_ref[k]->base[0] == base){
2127 id_list[i]= h->short_ref_count + k;
2136 ref2frm[i+2]= 4*id_list[i]
2137 +(h->ref_list[j][i].reference&3);
2140 for(i=16; i<48; i++)
2141 ref2frm[i+4]= 4*id_list[(i-16)>>1]
2142 +(h->ref_list[j][i].reference&3);
2145 h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
2146 h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
2148 s->avctx->refs= h->sps.ref_frame_count;
2150 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
2151 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",
2153 (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
2155 av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
2156 pps_id, h->frame_num,
2157 s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
2158 h->ref_count[0], h->ref_count[1],
2160 h->deblocking_filter, h->slice_alpha_c0_offset/2-26, h->slice_beta_offset/2-26,
2162 h->use_weight==1 && h->use_weight_chroma ? "c" : "",
2163 h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
2170 int ff_h264_get_slice_type(const H264Context *h)
2172 switch (h->slice_type) {
2173 case FF_P_TYPE: return 0;
2174 case FF_B_TYPE: return 1;
2175 case FF_I_TYPE: return 2;
2176 case FF_SP_TYPE: return 3;
2177 case FF_SI_TYPE: return 4;
2182 static void loop_filter(H264Context *h){
2183 MpegEncContext * const s = &h->s;
2184 uint8_t *dest_y, *dest_cb, *dest_cr;
2185 int linesize, uvlinesize, mb_x, mb_y;
2186 const int end_mb_y= s->mb_y + FRAME_MBAFF;
2187 const int old_slice_type= h->slice_type;
2189 if(h->deblocking_filter) {
2190 for(mb_x= 0; mb_x<s->mb_width; mb_x++){
2191 for(mb_y=end_mb_y - FRAME_MBAFF; mb_y<= end_mb_y; mb_y++){
2193 mb_xy = h->mb_xy = mb_x + mb_y*s->mb_stride;
2194 h->slice_num= h->slice_table[mb_xy];
2195 mb_type= s->current_picture.mb_type[mb_xy];
2196 h->list_count= h->list_counts[mb_xy];
2199 h->mb_mbaff = h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2203 dest_y = s->current_picture.data[0] + (mb_x + mb_y * s->linesize ) * 16;
2204 dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
2205 dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
2206 //FIXME simplify above
2209 linesize = h->mb_linesize = s->linesize * 2;
2210 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2211 if(mb_y&1){ //FIXME move out of this function?
2212 dest_y -= s->linesize*15;
2213 dest_cb-= s->uvlinesize*7;
2214 dest_cr-= s->uvlinesize*7;
2217 linesize = h->mb_linesize = s->linesize;
2218 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2220 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0);
2221 if(fill_filter_caches(h, mb_type))
2223 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2224 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2227 ff_h264_filter_mb (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2229 ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2234 h->slice_type= old_slice_type;
2236 s->mb_y= end_mb_y - FRAME_MBAFF;
2237 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2238 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2241 static void predict_field_decoding_flag(H264Context *h){
2242 MpegEncContext * const s = &h->s;
2243 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2244 int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
2245 ? s->current_picture.mb_type[mb_xy-1]
2246 : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
2247 ? s->current_picture.mb_type[mb_xy-s->mb_stride]
2249 h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2252 static int decode_slice(struct AVCodecContext *avctx, void *arg){
2253 H264Context *h = *(void**)arg;
2254 MpegEncContext * const s = &h->s;
2255 const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
2259 h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
2260 (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
2262 if( h->pps.cabac ) {
2264 align_get_bits( &s->gb );
2267 ff_init_cabac_states( &h->cabac);
2268 ff_init_cabac_decoder( &h->cabac,
2269 s->gb.buffer + get_bits_count(&s->gb)/8,
2270 (get_bits_left(&s->gb) + 7)/8);
2272 ff_h264_init_cabac_states(h);
2276 int ret = ff_h264_decode_mb_cabac(h);
2278 //STOP_TIMER("decode_mb_cabac")
2280 if(ret>=0) ff_h264_hl_decode_mb(h);
2282 if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
2285 ret = ff_h264_decode_mb_cabac(h);
2287 if(ret>=0) ff_h264_hl_decode_mb(h);
2290 eos = get_cabac_terminate( &h->cabac );
2292 if((s->workaround_bugs & FF_BUG_TRUNCATED) && h->cabac.bytestream > h->cabac.bytestream_end + 2){
2293 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);
2296 if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
2297 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);
2298 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
2302 if( ++s->mb_x >= s->mb_width ) {
2305 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2307 if(FIELD_OR_MBAFF_PICTURE) {
2309 if(FRAME_MBAFF && s->mb_y < s->mb_height)
2310 predict_field_decoding_flag(h);
2314 if( eos || s->mb_y >= s->mb_height ) {
2315 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2316 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);
2323 int ret = ff_h264_decode_mb_cavlc(h);
2325 if(ret>=0) ff_h264_hl_decode_mb(h);
2327 if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
2329 ret = ff_h264_decode_mb_cavlc(h);
2331 if(ret>=0) ff_h264_hl_decode_mb(h);
2336 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2337 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);
2342 if(++s->mb_x >= s->mb_width){
2345 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2347 if(FIELD_OR_MBAFF_PICTURE) {
2349 if(FRAME_MBAFF && s->mb_y < s->mb_height)
2350 predict_field_decoding_flag(h);
2352 if(s->mb_y >= s->mb_height){
2353 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2355 if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
2356 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);
2360 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);
2367 if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
2368 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2369 if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
2370 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);
2374 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);
2383 for(;s->mb_y < s->mb_height; s->mb_y++){
2384 for(;s->mb_x < s->mb_width; s->mb_x++){
2385 int ret= decode_mb(h);
2387 ff_h264_hl_decode_mb(h);
2390 av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2391 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);
2396 if(++s->mb_x >= s->mb_width){
2398 if(++s->mb_y >= s->mb_height){
2399 if(get_bits_count(s->gb) == s->gb.size_in_bits){
2400 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);
2404 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);
2411 if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
2412 if(get_bits_count(s->gb) == s->gb.size_in_bits){
2413 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);
2417 ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask);
2424 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2427 return -1; //not reached
2431 * Call decode_slice() for each context.
2433 * @param h h264 master context
2434 * @param context_count number of contexts to execute
2436 static void execute_decode_slices(H264Context *h, int context_count){
2437 MpegEncContext * const s = &h->s;
2438 AVCodecContext * const avctx= s->avctx;
2442 if (s->avctx->hwaccel)
2444 if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2446 if(context_count == 1) {
2447 decode_slice(avctx, &h);
2449 for(i = 1; i < context_count; i++) {
2450 hx = h->thread_context[i];
2451 hx->s.error_recognition = avctx->error_recognition;
2452 hx->s.error_count = 0;
2455 avctx->execute(avctx, (void *)decode_slice,
2456 h->thread_context, NULL, context_count, sizeof(void*));
2458 /* pull back stuff from slices to master context */
2459 hx = h->thread_context[context_count - 1];
2460 s->mb_x = hx->s.mb_x;
2461 s->mb_y = hx->s.mb_y;
2462 s->dropable = hx->s.dropable;
2463 s->picture_structure = hx->s.picture_structure;
2464 for(i = 1; i < context_count; i++)
2465 h->s.error_count += h->thread_context[i]->s.error_count;
2470 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
2471 MpegEncContext * const s = &h->s;
2472 AVCodecContext * const avctx= s->avctx;
2474 H264Context *hx; ///< thread context
2475 int context_count = 0;
2476 int next_avc= h->is_avc ? 0 : buf_size;
2478 h->max_contexts = avctx->thread_count;
2481 for(i=0; i<50; i++){
2482 av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
2485 if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
2486 h->current_slice = 0;
2487 if (!s->first_field)
2488 s->current_picture_ptr= NULL;
2489 ff_h264_reset_sei(h);
2500 if(buf_index >= next_avc) {
2501 if(buf_index >= buf_size) break;
2503 for(i = 0; i < h->nal_length_size; i++)
2504 nalsize = (nalsize << 8) | buf[buf_index++];
2505 if(nalsize <= 1 || nalsize > buf_size - buf_index){
2510 av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
2514 next_avc= buf_index + nalsize;
2516 // start code prefix search
2517 for(; buf_index + 3 < next_avc; buf_index++){
2518 // This should always succeed in the first iteration.
2519 if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
2523 if(buf_index+3 >= buf_size) break;
2526 if(buf_index >= next_avc) continue;
2529 hx = h->thread_context[context_count];
2531 ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index);
2532 if (ptr==NULL || dst_length < 0){
2535 i= buf_index + consumed;
2536 if((s->workaround_bugs & FF_BUG_AUTODETECT) && i+3<next_avc &&
2537 buf[i]==0x00 && buf[i+1]==0x00 && buf[i+2]==0x01 && buf[i+3]==0xE0)
2538 s->workaround_bugs |= FF_BUG_TRUNCATED;
2540 if(!(s->workaround_bugs & FF_BUG_TRUNCATED)){
2541 while(ptr[dst_length - 1] == 0 && dst_length > 0)
2544 bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
2546 if(s->avctx->debug&FF_DEBUG_STARTCODE){
2547 av_log(h->s.avctx, AV_LOG_DEBUG, "NAL %d at %d/%d length %d\n", hx->nal_unit_type, buf_index, buf_size, dst_length);
2550 if (h->is_avc && (nalsize != consumed) && nalsize){
2551 av_log(h->s.avctx, AV_LOG_DEBUG, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
2554 buf_index += consumed;
2556 if( (s->hurry_up == 1 && h->nal_ref_idc == 0) //FIXME do not discard SEI id
2557 ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2562 switch(hx->nal_unit_type){
2564 if (h->nal_unit_type != NAL_IDR_SLICE) {
2565 av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
2568 idr(h); //FIXME ensure we don't loose some frames if there is reordering
2570 init_get_bits(&hx->s.gb, ptr, bit_length);
2572 hx->inter_gb_ptr= &hx->s.gb;
2573 hx->s.data_partitioning = 0;
2575 if((err = decode_slice_header(hx, h)))
2578 avctx->profile = hx->sps.profile_idc;
2579 avctx->level = hx->sps.level_idc;
2581 if (s->avctx->hwaccel && h->current_slice == 1) {
2582 if (s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
2586 s->current_picture_ptr->key_frame |=
2587 (hx->nal_unit_type == NAL_IDR_SLICE) ||
2588 (h->sei_recovery_frame_cnt >= 0);
2589 if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5
2590 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2591 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=FF_B_TYPE)
2592 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2593 && avctx->skip_frame < AVDISCARD_ALL){
2594 if(avctx->hwaccel) {
2595 if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0)
2598 if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
2599 static const uint8_t start_code[] = {0x00, 0x00, 0x01};
2600 ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
2601 ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
2607 init_get_bits(&hx->s.gb, ptr, bit_length);
2609 hx->inter_gb_ptr= NULL;
2611 if ((err = decode_slice_header(hx, h)) < 0)
2614 avctx->profile = hx->sps.profile_idc;
2615 avctx->level = hx->sps.level_idc;
2617 hx->s.data_partitioning = 1;
2621 init_get_bits(&hx->intra_gb, ptr, bit_length);
2622 hx->intra_gb_ptr= &hx->intra_gb;
2625 init_get_bits(&hx->inter_gb, ptr, bit_length);
2626 hx->inter_gb_ptr= &hx->inter_gb;
2628 if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
2629 && s->context_initialized
2631 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2632 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=FF_B_TYPE)
2633 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2634 && avctx->skip_frame < AVDISCARD_ALL)
2638 init_get_bits(&s->gb, ptr, bit_length);
2639 ff_h264_decode_sei(h);
2642 init_get_bits(&s->gb, ptr, bit_length);
2643 ff_h264_decode_seq_parameter_set(h);
2645 if(s->flags& CODEC_FLAG_LOW_DELAY)
2648 if(avctx->has_b_frames < 2)
2649 avctx->has_b_frames= !s->low_delay;
2652 init_get_bits(&s->gb, ptr, bit_length);
2654 ff_h264_decode_picture_parameter_set(h, bit_length);
2658 case NAL_END_SEQUENCE:
2659 case NAL_END_STREAM:
2660 case NAL_FILLER_DATA:
2662 case NAL_AUXILIARY_SLICE:
2665 av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", hx->nal_unit_type, bit_length);
2668 if(context_count == h->max_contexts) {
2669 execute_decode_slices(h, context_count);
2674 av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
2676 /* Slice could not be decoded in parallel mode, copy down
2677 * NAL unit stuff to context 0 and restart. Note that
2678 * rbsp_buffer is not transferred, but since we no longer
2679 * run in parallel mode this should not be an issue. */
2680 h->nal_unit_type = hx->nal_unit_type;
2681 h->nal_ref_idc = hx->nal_ref_idc;
2687 execute_decode_slices(h, context_count);
2692 * returns the number of bytes consumed for building the current frame
2694 static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
2695 if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
2696 if(pos+10>buf_size) pos=buf_size; // oops ;)
2701 static int decode_frame(AVCodecContext *avctx,
2702 void *data, int *data_size,
2705 const uint8_t *buf = avpkt->data;
2706 int buf_size = avpkt->size;
2707 H264Context *h = avctx->priv_data;
2708 MpegEncContext *s = &h->s;
2709 AVFrame *pict = data;
2712 s->flags= avctx->flags;
2713 s->flags2= avctx->flags2;
2715 /* end of stream, output what is still in the buffers */
2716 if (buf_size == 0) {
2720 //FIXME factorize this with the output code below
2721 out = h->delayed_pic[0];
2723 for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2724 if(h->delayed_pic[i]->poc < out->poc){
2725 out = h->delayed_pic[i];
2729 for(i=out_idx; h->delayed_pic[i]; i++)
2730 h->delayed_pic[i] = h->delayed_pic[i+1];
2733 *data_size = sizeof(AVFrame);
2734 *pict= *(AVFrame*)out;
2740 buf_index=decode_nal_units(h, buf, buf_size);
2744 if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
2745 if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
2746 av_log(avctx, AV_LOG_ERROR, "no frame!\n");
2750 if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
2751 Picture *out = s->current_picture_ptr;
2752 Picture *cur = s->current_picture_ptr;
2753 int i, pics, out_of_order, out_idx;
2757 if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
2758 /* Wait for second field. */
2762 cur->interlaced_frame = 0;
2763 cur->repeat_pict = 0;
2765 /* Signal interlacing information externally. */
2766 /* Prioritize picture timing SEI information over used decoding process if it exists. */
2768 if(h->sps.pic_struct_present_flag){
2769 switch (h->sei_pic_struct)
2771 case SEI_PIC_STRUCT_FRAME:
2773 case SEI_PIC_STRUCT_TOP_FIELD:
2774 case SEI_PIC_STRUCT_BOTTOM_FIELD:
2775 cur->interlaced_frame = 1;
2777 case SEI_PIC_STRUCT_TOP_BOTTOM:
2778 case SEI_PIC_STRUCT_BOTTOM_TOP:
2779 if (FIELD_OR_MBAFF_PICTURE)
2780 cur->interlaced_frame = 1;
2782 // try to flag soft telecine progressive
2783 cur->interlaced_frame = h->prev_interlaced_frame;
2785 case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
2786 case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
2787 // Signal the possibility of telecined film externally (pic_struct 5,6)
2788 // From these hints, let the applications decide if they apply deinterlacing.
2789 cur->repeat_pict = 1;
2791 case SEI_PIC_STRUCT_FRAME_DOUBLING:
2792 // Force progressive here, as doubling interlaced frame is a bad idea.
2793 cur->repeat_pict = 2;
2795 case SEI_PIC_STRUCT_FRAME_TRIPLING:
2796 cur->repeat_pict = 4;
2800 if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
2801 cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0;
2803 /* Derive interlacing flag from used decoding process. */
2804 cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
2806 h->prev_interlaced_frame = cur->interlaced_frame;
2808 if (cur->field_poc[0] != cur->field_poc[1]){
2809 /* Derive top_field_first from field pocs. */
2810 cur->top_field_first = cur->field_poc[0] < cur->field_poc[1];
2812 if(cur->interlaced_frame || h->sps.pic_struct_present_flag){
2813 /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */
2814 if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM
2815 || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
2816 cur->top_field_first = 1;
2818 cur->top_field_first = 0;
2820 /* Most likely progressive */
2821 cur->top_field_first = 0;
2825 //FIXME do something with unavailable reference frames
2827 /* Sort B-frames into display order */
2829 if(h->sps.bitstream_restriction_flag
2830 && s->avctx->has_b_frames < h->sps.num_reorder_frames){
2831 s->avctx->has_b_frames = h->sps.num_reorder_frames;
2835 if( s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT
2836 && !h->sps.bitstream_restriction_flag){
2837 s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT;
2842 while(h->delayed_pic[pics]) pics++;
2844 assert(pics <= MAX_DELAYED_PIC_COUNT);
2846 h->delayed_pic[pics++] = cur;
2847 if(cur->reference == 0)
2848 cur->reference = DELAYED_PIC_REF;
2850 out = h->delayed_pic[0];
2852 for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2853 if(h->delayed_pic[i]->poc < out->poc){
2854 out = h->delayed_pic[i];
2857 if(s->avctx->has_b_frames == 0 && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset))
2858 h->outputed_poc= INT_MIN;
2859 out_of_order = out->poc < h->outputed_poc;
2861 if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames)
2863 else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT)
2865 ((h->outputed_poc != INT_MIN && out->poc > h->outputed_poc + 2)
2866 || cur->pict_type == FF_B_TYPE)))
2869 s->avctx->has_b_frames++;
2872 if(out_of_order || pics > s->avctx->has_b_frames){
2873 out->reference &= ~DELAYED_PIC_REF;
2874 for(i=out_idx; h->delayed_pic[i]; i++)
2875 h->delayed_pic[i] = h->delayed_pic[i+1];
2877 if(!out_of_order && pics > s->avctx->has_b_frames){
2878 *data_size = sizeof(AVFrame);
2880 if(out_idx==0 && h->delayed_pic[0] && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) {
2881 h->outputed_poc = INT_MIN;
2883 h->outputed_poc = out->poc;
2884 *pict= *(AVFrame*)out;
2886 av_log(avctx, AV_LOG_DEBUG, "no picture\n");
2891 assert(pict->data[0] || !*data_size);
2892 ff_print_debug_info(s, pict);
2893 //printf("out %d\n", (int)pict->data[0]);
2895 return get_consumed_bytes(s, buf_index, buf_size);
2898 static inline void fill_mb_avail(H264Context *h){
2899 MpegEncContext * const s = &h->s;
2900 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2903 h->mb_avail[0]= s->mb_x && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num;
2904 h->mb_avail[1]= h->slice_table[mb_xy - s->mb_stride ] == h->slice_num;
2905 h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num;
2911 h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
2912 h->mb_avail[4]= 1; //FIXME move out
2913 h->mb_avail[5]= 0; //FIXME move out
2921 #define SIZE (COUNT*40)
2927 // int int_temp[10000];
2929 AVCodecContext avctx;
2931 dsputil_init(&dsp, &avctx);
2933 init_put_bits(&pb, temp, SIZE);
2934 printf("testing unsigned exp golomb\n");
2935 for(i=0; i<COUNT; i++){
2937 set_ue_golomb(&pb, i);
2938 STOP_TIMER("set_ue_golomb");
2940 flush_put_bits(&pb);
2942 init_get_bits(&gb, temp, 8*SIZE);
2943 for(i=0; i<COUNT; i++){
2946 s= show_bits(&gb, 24);
2949 j= get_ue_golomb(&gb);
2951 printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
2954 STOP_TIMER("get_ue_golomb");
2958 init_put_bits(&pb, temp, SIZE);
2959 printf("testing signed exp golomb\n");
2960 for(i=0; i<COUNT; i++){
2962 set_se_golomb(&pb, i - COUNT/2);
2963 STOP_TIMER("set_se_golomb");
2965 flush_put_bits(&pb);
2967 init_get_bits(&gb, temp, 8*SIZE);
2968 for(i=0; i<COUNT; i++){
2971 s= show_bits(&gb, 24);
2974 j= get_se_golomb(&gb);
2975 if(j != i - COUNT/2){
2976 printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
2979 STOP_TIMER("get_se_golomb");
2983 printf("testing 4x4 (I)DCT\n");
2986 uint8_t src[16], ref[16];
2987 uint64_t error= 0, max_error=0;
2989 for(i=0; i<COUNT; i++){
2991 // printf("%d %d %d\n", r1, r2, (r2-r1)*16);
2992 for(j=0; j<16; j++){
2993 ref[j]= random()%255;
2994 src[j]= random()%255;
2997 h264_diff_dct_c(block, src, ref, 4);
3000 for(j=0; j<16; j++){
3001 // printf("%d ", block[j]);
3002 block[j]= block[j]*4;
3003 if(j&1) block[j]= (block[j]*4 + 2)/5;
3004 if(j&4) block[j]= (block[j]*4 + 2)/5;
3008 s->dsp.h264_idct_add(ref, block, 4);
3009 /* for(j=0; j<16; j++){
3010 printf("%d ", ref[j]);
3014 for(j=0; j<16; j++){
3015 int diff= FFABS(src[j] - ref[j]);
3018 max_error= FFMAX(max_error, diff);
3021 printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
3022 printf("testing quantizer\n");
3023 for(qp=0; qp<52; qp++){
3025 src1_block[i]= src2_block[i]= random()%255;
3028 printf("Testing NAL layer\n");
3030 uint8_t bitstream[COUNT];
3031 uint8_t nal[COUNT*2];
3033 memset(&h, 0, sizeof(H264Context));
3035 for(i=0; i<COUNT; i++){
3043 for(j=0; j<COUNT; j++){
3044 bitstream[j]= (random() % 255) + 1;
3047 for(j=0; j<zeros; j++){
3048 int pos= random() % COUNT;
3049 while(bitstream[pos] == 0){
3058 nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
3060 printf("encoding failed\n");
3064 out= ff_h264_decode_nal(&h, nal, &out_length, &consumed, nal_length);
3068 if(out_length != COUNT){
3069 printf("incorrect length %d %d\n", out_length, COUNT);
3073 if(consumed != nal_length){
3074 printf("incorrect consumed length %d %d\n", nal_length, consumed);
3078 if(memcmp(bitstream, out, COUNT)){
3079 printf("mismatch\n");
3085 printf("Testing RBSP\n");
3093 av_cold void ff_h264_free_context(H264Context *h)
3097 free_tables(h); //FIXME cleanup init stuff perhaps
3099 for(i = 0; i < MAX_SPS_COUNT; i++)
3100 av_freep(h->sps_buffers + i);
3102 for(i = 0; i < MAX_PPS_COUNT; i++)
3103 av_freep(h->pps_buffers + i);
3106 av_cold int ff_h264_decode_end(AVCodecContext *avctx)
3108 H264Context *h = avctx->priv_data;
3109 MpegEncContext *s = &h->s;
3111 ff_h264_free_context(h);
3115 // memset(h, 0, sizeof(H264Context));
3121 AVCodec h264_decoder = {
3125 sizeof(H264Context),
3126 ff_h264_decode_init,
3130 /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY,
3132 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
3133 .pix_fmts= ff_hwaccel_pixfmt_list_420,
3136 #if CONFIG_H264_VDPAU_DECODER
3137 AVCodec h264_vdpau_decoder = {
3141 sizeof(H264Context),
3142 ff_h264_decode_init,
3146 CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3148 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
3149 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_VDPAU_H264, PIX_FMT_NONE},