2 * H.26L/H.264/AVC/JVT/14496-10/... decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * H.264 / AVC / MPEG4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
28 #include "libavcore/imgutils.h"
32 #include "mpegvideo.h"
35 #include "h264_mvpred.h"
36 #include "h264_parser.h"
39 #include "rectangle.h"
40 #include "vdpau_internal.h"
41 #include "libavutil/avassert.h"
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,
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,
56 static const enum PixelFormat hwaccel_pixfmt_list_h264_jpeg_420[] = {
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];
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];
73 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
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};
81 if(!(h->top_samples_available&0x8000)){
83 int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
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);
88 h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
93 if((h->left_samples_available&0x8888)!=0x8888){
94 static const int mask[4]={0x8000,0x2000,0x80,0x20};
96 if(!(h->left_samples_available&mask[i])){
97 int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
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);
102 h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
109 } //FIXME cleanup like ff_h264_check_intra_pred_mode
112 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
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};
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);
124 if(!(h->top_samples_available&0x8000)){
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);
132 if((h->left_samples_available&0x8080) != 0x8080){
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);
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);
146 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
151 // src[0]&0x80; //forbidden bit
152 h->nal_ref_idc= src[0]>>5;
153 h->nal_unit_type= src[0]&0x1F;
157 for(i=0; i<length; i++)
158 printf("%2X ", src[i]);
161 #if HAVE_FAST_UNALIGNED
164 for(i=0; i+1<length; i+=9){
165 if(!((~AV_RN64A(src+i) & (AV_RN64A(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
168 for(i=0; i+1<length; i+=5){
169 if(!((~AV_RN32A(src+i) & (AV_RN32A(src+i) - 0x01000101U)) & 0x80008080U))
172 if(i>0 && !src[i]) i--;
176 for(i=0; i+1<length; i+=2){
178 if(i>0 && src[i-1]==0) i--;
180 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
182 /* startcode, so we must be past the end */
190 if(i>=length-1){ //no escaped 0
192 *consumed= length+1; //+1 for the header
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];
204 //printf("decoding esc\n");
208 //remove escapes (very rare 1:2^22)
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
218 }else //next start code
222 dst[di++]= src[si++];
225 dst[di++]= src[si++];
228 memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
231 *consumed= si + 1;//+1 for the header
232 //FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
237 * Identify the exact end of the bitstream
238 * @return the length of the trailing, or 0 if damaged
240 static int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
244 tprintf(h->s.avctx, "rbsp trailing %X\n", v);
255 * DCT transforms the 16 dc values.
256 * @param qp quantization parameter ??? FIXME
258 static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
259 // const int qmul= dequant_coeff[qp][0];
261 int temp[16]; //FIXME check if this is a good idea
262 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
263 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
266 const int offset= y_offset[i];
267 const int z0= block[offset+stride*0] + block[offset+stride*4];
268 const int z1= block[offset+stride*0] - block[offset+stride*4];
269 const int z2= block[offset+stride*1] - block[offset+stride*5];
270 const int z3= block[offset+stride*1] + block[offset+stride*5];
279 const int offset= x_offset[i];
280 const int z0= temp[4*0+i] + temp[4*2+i];
281 const int z1= temp[4*0+i] - temp[4*2+i];
282 const int z2= temp[4*1+i] - temp[4*3+i];
283 const int z3= temp[4*1+i] + temp[4*3+i];
285 block[stride*0 +offset]= (z0 + z3)>>1;
286 block[stride*2 +offset]= (z1 + z2)>>1;
287 block[stride*8 +offset]= (z1 - z2)>>1;
288 block[stride*10+offset]= (z0 - z3)>>1;
296 static void chroma_dc_dequant_idct_c(DCTELEM *block, int qmul){
297 const int stride= 16*2;
298 const int xStride= 16;
301 a= block[stride*0 + xStride*0];
302 b= block[stride*0 + xStride*1];
303 c= block[stride*1 + xStride*0];
304 d= block[stride*1 + xStride*1];
311 block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
312 block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
313 block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
314 block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
318 static void chroma_dc_dct_c(DCTELEM *block){
319 const int stride= 16*2;
320 const int xStride= 16;
323 a= block[stride*0 + xStride*0];
324 b= block[stride*0 + xStride*1];
325 c= block[stride*1 + xStride*0];
326 d= block[stride*1 + xStride*1];
333 block[stride*0 + xStride*0]= (a+c);
334 block[stride*0 + xStride*1]= (e+b);
335 block[stride*1 + xStride*0]= (a-c);
336 block[stride*1 + xStride*1]= (e-b);
340 static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
341 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
342 int src_x_offset, int src_y_offset,
343 qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
344 MpegEncContext * const s = &h->s;
345 const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
346 int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
347 const int luma_xy= (mx&3) + ((my&3)<<2);
348 uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
349 uint8_t * src_cb, * src_cr;
350 int extra_width= h->emu_edge_width;
351 int extra_height= h->emu_edge_height;
353 const int full_mx= mx>>2;
354 const int full_my= my>>2;
355 const int pic_width = 16*s->mb_width;
356 const int pic_height = 16*s->mb_height >> MB_FIELD;
358 if(mx&7) extra_width -= 3;
359 if(my&7) extra_height -= 3;
361 if( full_mx < 0-extra_width
362 || full_my < 0-extra_height
363 || full_mx + 16/*FIXME*/ > pic_width + extra_width
364 || full_my + 16/*FIXME*/ > pic_height + extra_height){
365 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);
366 src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
370 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
372 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
375 if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
378 // chroma offset when predicting from a field of opposite parity
379 my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
380 emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
382 src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
383 src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
386 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);
387 src_cb= s->edge_emu_buffer;
389 chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
392 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);
393 src_cr= s->edge_emu_buffer;
395 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
398 static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
399 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
400 int x_offset, int y_offset,
401 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
402 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
403 int list0, int list1){
404 MpegEncContext * const s = &h->s;
405 qpel_mc_func *qpix_op= qpix_put;
406 h264_chroma_mc_func chroma_op= chroma_put;
408 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
409 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
410 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
411 x_offset += 8*s->mb_x;
412 y_offset += 8*(s->mb_y >> MB_FIELD);
415 Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
416 mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
417 dest_y, dest_cb, dest_cr, x_offset, y_offset,
421 chroma_op= chroma_avg;
425 Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
426 mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
427 dest_y, dest_cb, dest_cr, x_offset, y_offset,
432 static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
433 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
434 int x_offset, int y_offset,
435 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
436 h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
437 h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
438 int list0, int list1){
439 MpegEncContext * const s = &h->s;
441 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
442 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
443 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
444 x_offset += 8*s->mb_x;
445 y_offset += 8*(s->mb_y >> MB_FIELD);
448 /* don't optimize for luma-only case, since B-frames usually
449 * use implicit weights => chroma too. */
450 uint8_t *tmp_cb = s->obmc_scratchpad;
451 uint8_t *tmp_cr = s->obmc_scratchpad + 8;
452 uint8_t *tmp_y = s->obmc_scratchpad + 8*h->mb_uvlinesize;
453 int refn0 = h->ref_cache[0][ scan8[n] ];
454 int refn1 = h->ref_cache[1][ scan8[n] ];
456 mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
457 dest_y, dest_cb, dest_cr,
458 x_offset, y_offset, qpix_put, chroma_put);
459 mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
460 tmp_y, tmp_cb, tmp_cr,
461 x_offset, y_offset, qpix_put, chroma_put);
463 if(h->use_weight == 2){
464 int weight0 = h->implicit_weight[refn0][refn1][s->mb_y&1];
465 int weight1 = 64 - weight0;
466 luma_weight_avg( dest_y, tmp_y, h-> mb_linesize, 5, weight0, weight1, 0);
467 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
468 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
470 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
471 h->luma_weight[refn0][0][0] , h->luma_weight[refn1][1][0],
472 h->luma_weight[refn0][0][1] + h->luma_weight[refn1][1][1]);
473 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
474 h->chroma_weight[refn0][0][0][0] , h->chroma_weight[refn1][1][0][0],
475 h->chroma_weight[refn0][0][0][1] + h->chroma_weight[refn1][1][0][1]);
476 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
477 h->chroma_weight[refn0][0][1][0] , h->chroma_weight[refn1][1][1][0],
478 h->chroma_weight[refn0][0][1][1] + h->chroma_weight[refn1][1][1][1]);
481 int list = list1 ? 1 : 0;
482 int refn = h->ref_cache[list][ scan8[n] ];
483 Picture *ref= &h->ref_list[list][refn];
484 mc_dir_part(h, ref, n, square, chroma_height, delta, list,
485 dest_y, dest_cb, dest_cr, x_offset, y_offset,
486 qpix_put, chroma_put);
488 luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
489 h->luma_weight[refn][list][0], h->luma_weight[refn][list][1]);
490 if(h->use_weight_chroma){
491 chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
492 h->chroma_weight[refn][list][0][0], h->chroma_weight[refn][list][0][1]);
493 chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
494 h->chroma_weight[refn][list][1][0], h->chroma_weight[refn][list][1][1]);
499 static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
500 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
501 int x_offset, int y_offset,
502 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
503 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
504 h264_weight_func *weight_op, h264_biweight_func *weight_avg,
505 int list0, int list1){
506 if((h->use_weight==2 && list0 && list1
507 && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ][h->s.mb_y&1] != 32))
509 mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
510 x_offset, y_offset, qpix_put, chroma_put,
511 weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
513 mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
514 x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
517 static inline void prefetch_motion(H264Context *h, int list){
518 /* fetch pixels for estimated mv 4 macroblocks ahead
519 * optimized for 64byte cache lines */
520 MpegEncContext * const s = &h->s;
521 const int refn = h->ref_cache[list][scan8[0]];
523 const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
524 const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
525 uint8_t **src= h->ref_list[list][refn].data;
526 int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
527 s->dsp.prefetch(src[0]+off, s->linesize, 4);
528 off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
529 s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
533 static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
534 qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
535 qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
536 h264_weight_func *weight_op, h264_biweight_func *weight_avg){
537 MpegEncContext * const s = &h->s;
538 const int mb_xy= h->mb_xy;
539 const int mb_type= s->current_picture.mb_type[mb_xy];
541 assert(IS_INTER(mb_type));
543 prefetch_motion(h, 0);
545 if(IS_16X16(mb_type)){
546 mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
547 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
548 weight_op, weight_avg,
549 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
550 }else if(IS_16X8(mb_type)){
551 mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
552 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
553 &weight_op[1], &weight_avg[1],
554 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
555 mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
556 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
557 &weight_op[1], &weight_avg[1],
558 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
559 }else if(IS_8X16(mb_type)){
560 mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
561 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
562 &weight_op[2], &weight_avg[2],
563 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
564 mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
565 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
566 &weight_op[2], &weight_avg[2],
567 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
571 assert(IS_8X8(mb_type));
574 const int sub_mb_type= h->sub_mb_type[i];
576 int x_offset= (i&1)<<2;
577 int y_offset= (i&2)<<1;
579 if(IS_SUB_8X8(sub_mb_type)){
580 mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
581 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
582 &weight_op[3], &weight_avg[3],
583 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
584 }else if(IS_SUB_8X4(sub_mb_type)){
585 mc_part(h, n , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
586 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
587 &weight_op[4], &weight_avg[4],
588 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
589 mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
590 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
591 &weight_op[4], &weight_avg[4],
592 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
593 }else if(IS_SUB_4X8(sub_mb_type)){
594 mc_part(h, n , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
595 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
596 &weight_op[5], &weight_avg[5],
597 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
598 mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
599 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
600 &weight_op[5], &weight_avg[5],
601 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
604 assert(IS_SUB_4X4(sub_mb_type));
606 int sub_x_offset= x_offset + 2*(j&1);
607 int sub_y_offset= y_offset + (j&2);
608 mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
609 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
610 &weight_op[6], &weight_avg[6],
611 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
617 prefetch_motion(h, 1);
621 static void free_tables(H264Context *h, int free_rbsp){
624 av_freep(&h->intra4x4_pred_mode);
625 av_freep(&h->chroma_pred_mode_table);
626 av_freep(&h->cbp_table);
627 av_freep(&h->mvd_table[0]);
628 av_freep(&h->mvd_table[1]);
629 av_freep(&h->direct_table);
630 av_freep(&h->non_zero_count);
631 av_freep(&h->slice_table_base);
632 h->slice_table= NULL;
633 av_freep(&h->list_counts);
635 av_freep(&h->mb2b_xy);
636 av_freep(&h->mb2br_xy);
638 for(i = 0; i < MAX_THREADS; i++) {
639 hx = h->thread_context[i];
641 av_freep(&hx->top_borders[1]);
642 av_freep(&hx->top_borders[0]);
643 av_freep(&hx->s.obmc_scratchpad);
645 av_freep(&hx->rbsp_buffer[1]);
646 av_freep(&hx->rbsp_buffer[0]);
647 hx->rbsp_buffer_size[0] = 0;
648 hx->rbsp_buffer_size[1] = 0;
650 if (i) av_freep(&h->thread_context[i]);
654 static void init_dequant8_coeff_table(H264Context *h){
656 h->dequant8_coeff[0] = h->dequant8_buffer[0];
657 h->dequant8_coeff[1] = h->dequant8_buffer[1];
660 if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
661 h->dequant8_coeff[1] = h->dequant8_buffer[0];
669 h->dequant8_coeff[i][q][(x>>3)|((x&7)<<3)] =
670 ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
671 h->pps.scaling_matrix8[i][x]) << shift;
676 static void init_dequant4_coeff_table(H264Context *h){
679 h->dequant4_coeff[i] = h->dequant4_buffer[i];
681 if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
682 h->dequant4_coeff[i] = h->dequant4_buffer[j];
690 int shift = div6[q] + 2;
693 h->dequant4_coeff[i][q][(x>>2)|((x<<2)&0xF)] =
694 ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
695 h->pps.scaling_matrix4[i][x]) << shift;
700 static void init_dequant_tables(H264Context *h){
702 init_dequant4_coeff_table(h);
703 if(h->pps.transform_8x8_mode)
704 init_dequant8_coeff_table(h);
705 if(h->sps.transform_bypass){
708 h->dequant4_coeff[i][0][x] = 1<<6;
709 if(h->pps.transform_8x8_mode)
712 h->dequant8_coeff[i][0][x] = 1<<6;
717 int ff_h264_alloc_tables(H264Context *h){
718 MpegEncContext * const s = &h->s;
719 const int big_mb_num= s->mb_stride * (s->mb_height+1);
720 const int row_mb_num= 2*s->mb_stride*s->avctx->thread_count;
723 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, row_mb_num * 8 * sizeof(uint8_t), fail)
725 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count , big_mb_num * 32 * sizeof(uint8_t), fail)
726 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail)
727 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail)
729 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail)
730 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 16*row_mb_num * sizeof(uint8_t), fail);
731 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 16*row_mb_num * sizeof(uint8_t), fail);
732 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 4*big_mb_num * sizeof(uint8_t) , fail);
733 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts, big_mb_num * sizeof(uint8_t), fail)
735 memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base));
736 h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
738 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy , big_mb_num * sizeof(uint32_t), fail);
739 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2br_xy , big_mb_num * sizeof(uint32_t), fail);
740 for(y=0; y<s->mb_height; y++){
741 for(x=0; x<s->mb_width; x++){
742 const int mb_xy= x + y*s->mb_stride;
743 const int b_xy = 4*x + 4*y*h->b_stride;
745 h->mb2b_xy [mb_xy]= b_xy;
746 h->mb2br_xy[mb_xy]= 8*(FMO ? mb_xy : (mb_xy % (2*s->mb_stride)));
750 s->obmc_scratchpad = NULL;
752 if(!h->dequant4_coeff[0])
753 init_dequant_tables(h);
762 * Mimic alloc_tables(), but for every context thread.
764 static void clone_tables(H264Context *dst, H264Context *src, int i){
765 MpegEncContext * const s = &src->s;
766 dst->intra4x4_pred_mode = src->intra4x4_pred_mode + i*8*2*s->mb_stride;
767 dst->non_zero_count = src->non_zero_count;
768 dst->slice_table = src->slice_table;
769 dst->cbp_table = src->cbp_table;
770 dst->mb2b_xy = src->mb2b_xy;
771 dst->mb2br_xy = src->mb2br_xy;
772 dst->chroma_pred_mode_table = src->chroma_pred_mode_table;
773 dst->mvd_table[0] = src->mvd_table[0] + i*8*2*s->mb_stride;
774 dst->mvd_table[1] = src->mvd_table[1] + i*8*2*s->mb_stride;
775 dst->direct_table = src->direct_table;
776 dst->list_counts = src->list_counts;
778 dst->s.obmc_scratchpad = NULL;
779 ff_h264_pred_init(&dst->hpc, src->s.codec_id);
784 * Allocate buffers which are not shared amongst multiple threads.
786 static int context_init(H264Context *h){
787 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
788 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
790 h->ref_cache[0][scan8[5 ]+1] = h->ref_cache[0][scan8[7 ]+1] = h->ref_cache[0][scan8[13]+1] =
791 h->ref_cache[1][scan8[5 ]+1] = h->ref_cache[1][scan8[7 ]+1] = h->ref_cache[1][scan8[13]+1] = PART_NOT_AVAILABLE;
795 return -1; // free_tables will clean up for us
798 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size);
800 static av_cold void common_init(H264Context *h){
801 MpegEncContext * const s = &h->s;
803 s->width = s->avctx->width;
804 s->height = s->avctx->height;
805 s->codec_id= s->avctx->codec->id;
807 ff_h264dsp_init(&h->h264dsp);
808 ff_h264_pred_init(&h->hpc, s->codec_id);
810 h->dequant_coeff_pps= -1;
811 s->unrestricted_mv=1;
814 dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
816 memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
817 memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
820 int ff_h264_decode_extradata(H264Context *h)
822 AVCodecContext *avctx = h->s.avctx;
824 if(*(char *)avctx->extradata == 1){
826 unsigned char *p = avctx->extradata;
830 if(avctx->extradata_size < 7) {
831 av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
834 /* sps and pps in the avcC always have length coded with 2 bytes,
835 so put a fake nal_length_size = 2 while parsing them */
836 h->nal_length_size = 2;
837 // Decode sps from avcC
838 cnt = *(p+5) & 0x1f; // Number of sps
840 for (i = 0; i < cnt; i++) {
841 nalsize = AV_RB16(p) + 2;
842 if(decode_nal_units(h, p, nalsize) < 0) {
843 av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
848 // Decode pps from avcC
849 cnt = *(p++); // Number of pps
850 for (i = 0; i < cnt; i++) {
851 nalsize = AV_RB16(p) + 2;
852 if(decode_nal_units(h, p, nalsize) != nalsize) {
853 av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
858 // Now store right nal length size, that will be use to parse all other nals
859 h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
862 if(decode_nal_units(h, avctx->extradata, avctx->extradata_size) < 0)
868 av_cold int ff_h264_decode_init(AVCodecContext *avctx){
869 H264Context *h= avctx->priv_data;
870 MpegEncContext * const s = &h->s;
872 MPV_decode_defaults(s);
877 s->out_format = FMT_H264;
878 s->workaround_bugs= avctx->workaround_bugs;
881 // s->decode_mb= ff_h263_decode_mb;
882 s->quarter_sample = 1;
883 if(!avctx->has_b_frames)
886 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
888 ff_h264_decode_init_vlc();
890 h->thread_context[0] = h;
891 h->outputed_poc = INT_MIN;
892 h->prev_poc_msb= 1<<16;
894 ff_h264_reset_sei(h);
895 if(avctx->codec_id == CODEC_ID_H264){
896 if(avctx->ticks_per_frame == 1){
897 s->avctx->time_base.den *=2;
899 avctx->ticks_per_frame = 2;
902 if(avctx->extradata_size > 0 && avctx->extradata &&
903 ff_h264_decode_extradata(h))
906 if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames < h->sps.num_reorder_frames){
907 s->avctx->has_b_frames = h->sps.num_reorder_frames;
914 int ff_h264_frame_start(H264Context *h){
915 MpegEncContext * const s = &h->s;
918 if(MPV_frame_start(s, s->avctx) < 0)
920 ff_er_frame_start(s);
922 * MPV_frame_start uses pict_type to derive key_frame.
923 * This is incorrect for H.264; IDR markings must be used.
924 * Zero here; IDR markings per slice in frame or fields are ORed in later.
925 * See decode_nal_units().
927 s->current_picture_ptr->key_frame= 0;
928 s->current_picture_ptr->mmco_reset= 0;
930 assert(s->linesize && s->uvlinesize);
933 h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
934 h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
937 h->block_offset[16+i]=
938 h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
939 h->block_offset[24+16+i]=
940 h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
943 /* can't be in alloc_tables because linesize isn't known there.
944 * FIXME: redo bipred weight to not require extra buffer? */
945 for(i = 0; i < s->avctx->thread_count; i++)
946 if(h->thread_context[i] && !h->thread_context[i]->s.obmc_scratchpad)
947 h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
949 /* some macroblocks can be accessed before they're available in case of lost slices, mbaff or threading*/
950 memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
952 // s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
954 // We mark the current picture as non-reference after allocating it, so
955 // that if we break out due to an error it can be released automatically
956 // in the next MPV_frame_start().
957 // SVQ3 as well as most other codecs have only last/next/current and thus
958 // get released even with set reference, besides SVQ3 and others do not
959 // mark frames as reference later "naturally".
960 if(s->codec_id != CODEC_ID_SVQ3)
961 s->current_picture_ptr->reference= 0;
963 s->current_picture_ptr->field_poc[0]=
964 s->current_picture_ptr->field_poc[1]= INT_MAX;
965 assert(s->current_picture_ptr->long_ref==0);
970 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){
971 MpegEncContext * const s = &h->s;
976 src_cb -= uvlinesize;
977 src_cr -= uvlinesize;
979 if(!simple && FRAME_MBAFF){
982 top_border = h->top_borders[0][s->mb_x];
983 AV_COPY128(top_border, src_y + 15*linesize);
984 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
985 AV_COPY64(top_border+16, src_cb+7*uvlinesize);
986 AV_COPY64(top_border+24, src_cr+7*uvlinesize);
995 top_border = h->top_borders[top_idx][s->mb_x];
996 // There are two lines saved, the line above the the top macroblock of a pair,
997 // and the line above the bottom macroblock
998 AV_COPY128(top_border, src_y + 16*linesize);
1000 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1001 AV_COPY64(top_border+16, src_cb+8*uvlinesize);
1002 AV_COPY64(top_border+24, src_cr+8*uvlinesize);
1006 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){
1007 MpegEncContext * const s = &h->s;
1011 uint8_t *top_border_m1;
1012 uint8_t *top_border;
1014 if(!simple && FRAME_MBAFF){
1019 top_idx = MB_MBAFF ? 0 : 1;
1023 if(h->deblocking_filter == 2) {
1024 deblock_left = h->left_type[0];
1025 deblock_top = h->top_type;
1027 deblock_left = (s->mb_x > 0);
1028 deblock_top = (s->mb_y > !!MB_FIELD);
1031 src_y -= linesize + 1;
1032 src_cb -= uvlinesize + 1;
1033 src_cr -= uvlinesize + 1;
1035 top_border_m1 = h->top_borders[top_idx][s->mb_x-1];
1036 top_border = h->top_borders[top_idx][s->mb_x];
1038 #define XCHG(a,b,xchg)\
1039 if (xchg) AV_SWAP64(b,a);\
1040 else AV_COPY64(b,a);
1044 XCHG(top_border_m1+8, src_y -7, 1);
1046 XCHG(top_border+0, src_y +1, xchg);
1047 XCHG(top_border+8, src_y +9, 1);
1048 if(s->mb_x+1 < s->mb_width){
1049 XCHG(h->top_borders[top_idx][s->mb_x+1], src_y +17, 1);
1053 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1056 XCHG(top_border_m1+16, src_cb -7, 1);
1057 XCHG(top_border_m1+24, src_cr -7, 1);
1059 XCHG(top_border+16, src_cb+1, 1);
1060 XCHG(top_border+24, src_cr+1, 1);
1065 static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
1066 MpegEncContext * const s = &h->s;
1067 const int mb_x= s->mb_x;
1068 const int mb_y= s->mb_y;
1069 const int mb_xy= h->mb_xy;
1070 const int mb_type= s->current_picture.mb_type[mb_xy];
1071 uint8_t *dest_y, *dest_cb, *dest_cr;
1072 int linesize, uvlinesize /*dct_offset*/;
1074 int *block_offset = &h->block_offset[0];
1075 const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
1076 /* is_h264 should always be true if SVQ3 is disabled. */
1077 const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
1078 void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1079 void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1081 dest_y = s->current_picture.data[0] + (mb_x + mb_y * s->linesize ) * 16;
1082 dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
1083 dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
1085 s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
1086 s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
1088 h->list_counts[mb_xy]= h->list_count;
1090 if (!simple && MB_FIELD) {
1091 linesize = h->mb_linesize = s->linesize * 2;
1092 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
1093 block_offset = &h->block_offset[24];
1094 if(mb_y&1){ //FIXME move out of this function?
1095 dest_y -= s->linesize*15;
1096 dest_cb-= s->uvlinesize*7;
1097 dest_cr-= s->uvlinesize*7;
1101 for(list=0; list<h->list_count; list++){
1102 if(!USES_LIST(mb_type, list))
1104 if(IS_16X16(mb_type)){
1105 int8_t *ref = &h->ref_cache[list][scan8[0]];
1106 fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
1108 for(i=0; i<16; i+=4){
1109 int ref = h->ref_cache[list][scan8[i]];
1111 fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
1117 linesize = h->mb_linesize = s->linesize;
1118 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
1119 // dct_offset = s->linesize * 16;
1122 if (!simple && IS_INTRA_PCM(mb_type)) {
1123 for (i=0; i<16; i++) {
1124 memcpy(dest_y + i* linesize, h->mb + i*8, 16);
1126 for (i=0; i<8; i++) {
1127 memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4, 8);
1128 memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4, 8);
1131 if(IS_INTRA(mb_type)){
1132 if(h->deblocking_filter)
1133 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
1135 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1136 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
1137 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
1140 if(IS_INTRA4x4(mb_type)){
1141 if(simple || !s->encoding){
1142 if(IS_8x8DCT(mb_type)){
1143 if(transform_bypass){
1145 idct_add = s->dsp.add_pixels8;
1147 idct_dc_add = h->h264dsp.h264_idct8_dc_add;
1148 idct_add = h->h264dsp.h264_idct8_add;
1150 for(i=0; i<16; i+=4){
1151 uint8_t * const ptr= dest_y + block_offset[i];
1152 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1153 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1154 h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
1156 const int nnz = h->non_zero_count_cache[ scan8[i] ];
1157 h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
1158 (h->topright_samples_available<<i)&0x4000, linesize);
1160 if(nnz == 1 && h->mb[i*16])
1161 idct_dc_add(ptr, h->mb + i*16, linesize);
1163 idct_add (ptr, h->mb + i*16, linesize);
1168 if(transform_bypass){
1170 idct_add = s->dsp.add_pixels4;
1172 idct_dc_add = h->h264dsp.h264_idct_dc_add;
1173 idct_add = h->h264dsp.h264_idct_add;
1175 for(i=0; i<16; i++){
1176 uint8_t * const ptr= dest_y + block_offset[i];
1177 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1179 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1180 h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
1184 if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
1185 const int topright_avail= (h->topright_samples_available<<i)&0x8000;
1186 assert(mb_y || linesize <= block_offset[i]);
1187 if(!topright_avail){
1188 tr= ptr[3 - linesize]*0x01010101;
1189 topright= (uint8_t*) &tr;
1191 topright= ptr + 4 - linesize;
1195 h->hpc.pred4x4[ dir ](ptr, topright, linesize);
1196 nnz = h->non_zero_count_cache[ scan8[i] ];
1199 if(nnz == 1 && h->mb[i*16])
1200 idct_dc_add(ptr, h->mb + i*16, linesize);
1202 idct_add (ptr, h->mb + i*16, linesize);
1204 ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
1211 h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
1213 if(h->non_zero_count_cache[ scan8[LUMA_DC_BLOCK_INDEX] ]){
1214 if(!transform_bypass)
1215 h->h264dsp.h264_luma_dc_dequant_idct(h->mb, h->mb_luma_dc, h->dequant4_coeff[0][s->qscale][0]);
1217 static const uint8_t dc_mapping[16] = { 0*16, 1*16, 4*16, 5*16, 2*16, 3*16, 6*16, 7*16,
1218 8*16, 9*16,12*16,13*16,10*16,11*16,14*16,15*16};
1219 for(i = 0; i < 16; i++)
1220 h->mb[dc_mapping[i]] = h->mb_luma_dc[i];
1224 ff_svq3_luma_dc_dequant_idct_c(h->mb, h->mb_luma_dc, s->qscale);
1226 if(h->deblocking_filter)
1227 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
1229 hl_motion(h, dest_y, dest_cb, dest_cr,
1230 s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1231 s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1232 h->h264dsp.weight_h264_pixels_tab, h->h264dsp.biweight_h264_pixels_tab);
1236 if(!IS_INTRA4x4(mb_type)){
1238 if(IS_INTRA16x16(mb_type)){
1239 if(transform_bypass){
1240 if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
1241 h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
1243 for(i=0; i<16; i++){
1244 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1245 s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
1249 h->h264dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1251 }else if(h->cbp&15){
1252 if(transform_bypass){
1253 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1254 idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
1255 for(i=0; i<16; i+=di){
1256 if(h->non_zero_count_cache[ scan8[i] ]){
1257 idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
1261 if(IS_8x8DCT(mb_type)){
1262 h->h264dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1264 h->h264dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1269 for(i=0; i<16; i++){
1270 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
1271 uint8_t * const ptr= dest_y + block_offset[i];
1272 ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1278 if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
1279 uint8_t *dest[2] = {dest_cb, dest_cr};
1280 if(transform_bypass){
1281 if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
1282 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
1283 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
1285 idct_add = s->dsp.add_pixels4;
1286 for(i=16; i<16+8; i++){
1287 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1288 idct_add (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1293 if(h->non_zero_count_cache[ scan8[CHROMA_DC_BLOCK_INDEX+0] ])
1294 chroma_dc_dequant_idct_c(h->mb + 16*16 , h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
1295 if(h->non_zero_count_cache[ scan8[CHROMA_DC_BLOCK_INDEX+1] ])
1296 chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]);
1297 h->h264dsp.h264_idct_add8(dest, block_offset,
1299 h->non_zero_count_cache);
1301 chroma_dc_dequant_idct_c(h->mb + 16*16 , h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
1302 chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]);
1303 for(i=16; i<16+8; i++){
1304 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
1305 uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
1306 ff_svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[s->qscale + 12] - 12, 2);
1313 if(h->cbp || IS_INTRA(mb_type))
1314 s->dsp.clear_blocks(h->mb);
1318 * Process a macroblock; this case avoids checks for expensive uncommon cases.
1320 static void hl_decode_mb_simple(H264Context *h){
1321 hl_decode_mb_internal(h, 1);
1325 * Process a macroblock; this handles edge cases, such as interlacing.
1327 static void av_noinline hl_decode_mb_complex(H264Context *h){
1328 hl_decode_mb_internal(h, 0);
1331 void ff_h264_hl_decode_mb(H264Context *h){
1332 MpegEncContext * const s = &h->s;
1333 const int mb_xy= h->mb_xy;
1334 const int mb_type= s->current_picture.mb_type[mb_xy];
1335 int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1338 hl_decode_mb_complex(h);
1339 else hl_decode_mb_simple(h);
1342 static int pred_weight_table(H264Context *h){
1343 MpegEncContext * const s = &h->s;
1345 int luma_def, chroma_def;
1348 h->use_weight_chroma= 0;
1349 h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
1351 h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
1352 luma_def = 1<<h->luma_log2_weight_denom;
1353 chroma_def = 1<<h->chroma_log2_weight_denom;
1355 for(list=0; list<2; list++){
1356 h->luma_weight_flag[list] = 0;
1357 h->chroma_weight_flag[list] = 0;
1358 for(i=0; i<h->ref_count[list]; i++){
1359 int luma_weight_flag, chroma_weight_flag;
1361 luma_weight_flag= get_bits1(&s->gb);
1362 if(luma_weight_flag){
1363 h->luma_weight[i][list][0]= get_se_golomb(&s->gb);
1364 h->luma_weight[i][list][1]= get_se_golomb(&s->gb);
1365 if( h->luma_weight[i][list][0] != luma_def
1366 || h->luma_weight[i][list][1] != 0) {
1368 h->luma_weight_flag[list]= 1;
1371 h->luma_weight[i][list][0]= luma_def;
1372 h->luma_weight[i][list][1]= 0;
1376 chroma_weight_flag= get_bits1(&s->gb);
1377 if(chroma_weight_flag){
1380 h->chroma_weight[i][list][j][0]= get_se_golomb(&s->gb);
1381 h->chroma_weight[i][list][j][1]= get_se_golomb(&s->gb);
1382 if( h->chroma_weight[i][list][j][0] != chroma_def
1383 || h->chroma_weight[i][list][j][1] != 0) {
1384 h->use_weight_chroma= 1;
1385 h->chroma_weight_flag[list]= 1;
1391 h->chroma_weight[i][list][j][0]= chroma_def;
1392 h->chroma_weight[i][list][j][1]= 0;
1397 if(h->slice_type_nos != FF_B_TYPE) break;
1399 h->use_weight= h->use_weight || h->use_weight_chroma;
1404 * Initialize implicit_weight table.
1405 * @param field 0/1 initialize the weight for interlaced MBAFF
1406 * -1 initializes the rest
1408 static void implicit_weight_table(H264Context *h, int field){
1409 MpegEncContext * const s = &h->s;
1410 int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
1412 for (i = 0; i < 2; i++) {
1413 h->luma_weight_flag[i] = 0;
1414 h->chroma_weight_flag[i] = 0;
1418 cur_poc = s->current_picture_ptr->poc;
1419 if( h->ref_count[0] == 1 && h->ref_count[1] == 1 && !FRAME_MBAFF
1420 && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
1422 h->use_weight_chroma= 0;
1426 ref_count0= h->ref_count[0];
1427 ref_count1= h->ref_count[1];
1429 cur_poc = s->current_picture_ptr->field_poc[field];
1431 ref_count0= 16+2*h->ref_count[0];
1432 ref_count1= 16+2*h->ref_count[1];
1436 h->use_weight_chroma= 2;
1437 h->luma_log2_weight_denom= 5;
1438 h->chroma_log2_weight_denom= 5;
1440 for(ref0=ref_start; ref0 < ref_count0; ref0++){
1441 int poc0 = h->ref_list[0][ref0].poc;
1442 for(ref1=ref_start; ref1 < ref_count1; ref1++){
1443 int poc1 = h->ref_list[1][ref1].poc;
1444 int td = av_clip(poc1 - poc0, -128, 127);
1447 int tb = av_clip(cur_poc - poc0, -128, 127);
1448 int tx = (16384 + (FFABS(td) >> 1)) / td;
1449 int dist_scale_factor = (tb*tx + 32) >> 8;
1450 if(dist_scale_factor >= -64 && dist_scale_factor <= 128)
1451 w = 64 - dist_scale_factor;
1454 h->implicit_weight[ref0][ref1][0]=
1455 h->implicit_weight[ref0][ref1][1]= w;
1457 h->implicit_weight[ref0][ref1][field]=w;
1464 * instantaneous decoder refresh.
1466 static void idr(H264Context *h){
1467 ff_h264_remove_all_refs(h);
1468 h->prev_frame_num= 0;
1469 h->prev_frame_num_offset= 0;
1474 /* forget old pics after a seek */
1475 static void flush_dpb(AVCodecContext *avctx){
1476 H264Context *h= avctx->priv_data;
1478 for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
1479 if(h->delayed_pic[i])
1480 h->delayed_pic[i]->reference= 0;
1481 h->delayed_pic[i]= NULL;
1483 h->outputed_poc= INT_MIN;
1484 h->prev_interlaced_frame = 1;
1486 if(h->s.current_picture_ptr)
1487 h->s.current_picture_ptr->reference= 0;
1488 h->s.first_field= 0;
1489 ff_h264_reset_sei(h);
1490 ff_mpeg_flush(avctx);
1493 static int init_poc(H264Context *h){
1494 MpegEncContext * const s = &h->s;
1495 const int max_frame_num= 1<<h->sps.log2_max_frame_num;
1497 Picture *cur = s->current_picture_ptr;
1499 h->frame_num_offset= h->prev_frame_num_offset;
1500 if(h->frame_num < h->prev_frame_num)
1501 h->frame_num_offset += max_frame_num;
1503 if(h->sps.poc_type==0){
1504 const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
1506 if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
1507 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
1508 else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
1509 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
1511 h->poc_msb = h->prev_poc_msb;
1512 //printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
1514 field_poc[1] = h->poc_msb + h->poc_lsb;
1515 if(s->picture_structure == PICT_FRAME)
1516 field_poc[1] += h->delta_poc_bottom;
1517 }else if(h->sps.poc_type==1){
1518 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
1521 if(h->sps.poc_cycle_length != 0)
1522 abs_frame_num = h->frame_num_offset + h->frame_num;
1526 if(h->nal_ref_idc==0 && abs_frame_num > 0)
1529 expected_delta_per_poc_cycle = 0;
1530 for(i=0; i < h->sps.poc_cycle_length; i++)
1531 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
1533 if(abs_frame_num > 0){
1534 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
1535 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
1537 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
1538 for(i = 0; i <= frame_num_in_poc_cycle; i++)
1539 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
1543 if(h->nal_ref_idc == 0)
1544 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
1546 field_poc[0] = expectedpoc + h->delta_poc[0];
1547 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
1549 if(s->picture_structure == PICT_FRAME)
1550 field_poc[1] += h->delta_poc[1];
1552 int poc= 2*(h->frame_num_offset + h->frame_num);
1561 if(s->picture_structure != PICT_BOTTOM_FIELD)
1562 s->current_picture_ptr->field_poc[0]= field_poc[0];
1563 if(s->picture_structure != PICT_TOP_FIELD)
1564 s->current_picture_ptr->field_poc[1]= field_poc[1];
1565 cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
1572 * initialize scan tables
1574 static void init_scan_tables(H264Context *h){
1576 for(i=0; i<16; i++){
1577 #define T(x) (x>>2) | ((x<<2) & 0xF)
1578 h->zigzag_scan[i] = T(zigzag_scan[i]);
1579 h-> field_scan[i] = T( field_scan[i]);
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]);
1590 if(h->sps.transform_bypass){ //FIXME same ugly
1591 h->zigzag_scan_q0 = zigzag_scan;
1592 h->zigzag_scan8x8_q0 = ff_zigzag_direct;
1593 h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
1594 h->field_scan_q0 = field_scan;
1595 h->field_scan8x8_q0 = field_scan8x8;
1596 h->field_scan8x8_cavlc_q0 = field_scan8x8_cavlc;
1598 h->zigzag_scan_q0 = h->zigzag_scan;
1599 h->zigzag_scan8x8_q0 = h->zigzag_scan8x8;
1600 h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
1601 h->field_scan_q0 = h->field_scan;
1602 h->field_scan8x8_q0 = h->field_scan8x8;
1603 h->field_scan8x8_cavlc_q0 = h->field_scan8x8_cavlc;
1607 static void field_end(H264Context *h){
1608 MpegEncContext * const s = &h->s;
1609 AVCodecContext * const avctx= s->avctx;
1612 s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
1613 s->current_picture_ptr->pict_type= s->pict_type;
1615 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1616 ff_vdpau_h264_set_reference_frames(s);
1619 ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1620 h->prev_poc_msb= h->poc_msb;
1621 h->prev_poc_lsb= h->poc_lsb;
1623 h->prev_frame_num_offset= h->frame_num_offset;
1624 h->prev_frame_num= h->frame_num;
1626 if (avctx->hwaccel) {
1627 if (avctx->hwaccel->end_frame(avctx) < 0)
1628 av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
1631 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1632 ff_vdpau_h264_picture_complete(s);
1635 * FIXME: Error handling code does not seem to support interlaced
1636 * when slices span multiple rows
1637 * The ff_er_add_slice calls don't work right for bottom
1638 * fields; they cause massive erroneous error concealing
1639 * Error marking covers both fields (top and bottom).
1640 * This causes a mismatched s->error_count
1641 * and a bad error table. Further, the error count goes to
1642 * INT_MAX when called for bottom field, because mb_y is
1643 * past end by one (callers fault) and resync_mb_y != 0
1644 * causes problems for the first MB line, too.
1655 * Replicate H264 "master" context to thread contexts.
1657 static void clone_slice(H264Context *dst, H264Context *src)
1659 memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset));
1660 dst->s.current_picture_ptr = src->s.current_picture_ptr;
1661 dst->s.current_picture = src->s.current_picture;
1662 dst->s.linesize = src->s.linesize;
1663 dst->s.uvlinesize = src->s.uvlinesize;
1664 dst->s.first_field = src->s.first_field;
1666 dst->prev_poc_msb = src->prev_poc_msb;
1667 dst->prev_poc_lsb = src->prev_poc_lsb;
1668 dst->prev_frame_num_offset = src->prev_frame_num_offset;
1669 dst->prev_frame_num = src->prev_frame_num;
1670 dst->short_ref_count = src->short_ref_count;
1672 memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref));
1673 memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref));
1674 memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
1675 memcpy(dst->ref_list, src->ref_list, sizeof(dst->ref_list));
1677 memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff));
1678 memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff));
1682 * decodes a slice header.
1683 * This will also call MPV_common_init() and frame_start() as needed.
1685 * @param h h264context
1686 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
1688 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
1690 static int decode_slice_header(H264Context *h, H264Context *h0){
1691 MpegEncContext * const s = &h->s;
1692 MpegEncContext * const s0 = &h0->s;
1693 unsigned int first_mb_in_slice;
1694 unsigned int pps_id;
1695 int num_ref_idx_active_override_flag;
1696 unsigned int slice_type, tmp, i, j;
1697 int default_ref_list_done = 0;
1698 int last_pic_structure;
1700 s->dropable= h->nal_ref_idc == 0;
1702 if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
1703 s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
1704 s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
1706 s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
1707 s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
1710 first_mb_in_slice= get_ue_golomb(&s->gb);
1712 if(first_mb_in_slice == 0){ //FIXME better field boundary detection
1713 if(h0->current_slice && FIELD_PICTURE){
1717 h0->current_slice = 0;
1718 if (!s0->first_field)
1719 s->current_picture_ptr= NULL;
1722 slice_type= get_ue_golomb_31(&s->gb);
1724 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);
1729 h->slice_type_fixed=1;
1731 h->slice_type_fixed=0;
1733 slice_type= golomb_to_pict_type[ slice_type ];
1734 if (slice_type == FF_I_TYPE
1735 || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
1736 default_ref_list_done = 1;
1738 h->slice_type= slice_type;
1739 h->slice_type_nos= slice_type & 3;
1741 s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
1743 pps_id= get_ue_golomb(&s->gb);
1744 if(pps_id>=MAX_PPS_COUNT){
1745 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
1748 if(!h0->pps_buffers[pps_id]) {
1749 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
1752 h->pps= *h0->pps_buffers[pps_id];
1754 if(!h0->sps_buffers[h->pps.sps_id]) {
1755 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
1758 h->sps = *h0->sps_buffers[h->pps.sps_id];
1760 s->avctx->profile = h->sps.profile_idc;
1761 s->avctx->level = h->sps.level_idc;
1762 s->avctx->refs = h->sps.ref_frame_count;
1764 if(h == h0 && h->dequant_coeff_pps != pps_id){
1765 h->dequant_coeff_pps = pps_id;
1766 init_dequant_tables(h);
1769 s->mb_width= h->sps.mb_width;
1770 s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
1772 h->b_stride= s->mb_width*4;
1774 s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
1775 if(h->sps.frame_mbs_only_flag)
1776 s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
1778 s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 7);
1780 if (s->context_initialized
1781 && ( s->width != s->avctx->width || s->height != s->avctx->height
1782 || av_cmp_q(h->sps.sar, s->avctx->sample_aspect_ratio))) {
1784 return -1; // width / height changed during parallelized decoding
1786 flush_dpb(s->avctx);
1789 if (!s->context_initialized) {
1791 return -1; // we cant (re-)initialize context during parallel decoding
1793 avcodec_set_dimensions(s->avctx, s->width, s->height);
1794 s->avctx->sample_aspect_ratio= h->sps.sar;
1795 av_assert0(s->avctx->sample_aspect_ratio.den);
1797 if(h->sps.video_signal_type_present_flag){
1798 s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
1799 if(h->sps.colour_description_present_flag){
1800 s->avctx->color_primaries = h->sps.color_primaries;
1801 s->avctx->color_trc = h->sps.color_trc;
1802 s->avctx->colorspace = h->sps.colorspace;
1806 if(h->sps.timing_info_present_flag){
1807 int64_t den= h->sps.time_scale;
1808 if(h->x264_build < 44U)
1810 av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
1811 h->sps.num_units_in_tick, den, 1<<30);
1813 s->avctx->pix_fmt = s->avctx->get_format(s->avctx,
1814 s->avctx->codec->pix_fmts ?
1815 s->avctx->codec->pix_fmts :
1816 s->avctx->color_range == AVCOL_RANGE_JPEG ?
1817 hwaccel_pixfmt_list_h264_jpeg_420 :
1818 ff_hwaccel_pixfmt_list_420);
1819 s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
1821 if (MPV_common_init(s) < 0)
1824 h->prev_interlaced_frame = 1;
1826 init_scan_tables(h);
1827 ff_h264_alloc_tables(h);
1829 for(i = 1; i < s->avctx->thread_count; i++) {
1831 c = h->thread_context[i] = av_malloc(sizeof(H264Context));
1832 memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
1833 memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
1834 c->h264dsp = h->h264dsp;
1837 init_scan_tables(c);
1838 clone_tables(c, h, i);
1841 for(i = 0; i < s->avctx->thread_count; i++)
1842 if(context_init(h->thread_context[i]) < 0)
1846 h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
1849 h->mb_aff_frame = 0;
1850 last_pic_structure = s0->picture_structure;
1851 if(h->sps.frame_mbs_only_flag){
1852 s->picture_structure= PICT_FRAME;
1854 if(get_bits1(&s->gb)) { //field_pic_flag
1855 s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
1857 s->picture_structure= PICT_FRAME;
1858 h->mb_aff_frame = h->sps.mb_aff;
1861 h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
1863 if(h0->current_slice == 0){
1864 while(h->frame_num != h->prev_frame_num &&
1865 h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
1866 Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
1867 av_log(h->s.avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
1868 if (ff_h264_frame_start(h) < 0)
1870 h->prev_frame_num++;
1871 h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
1872 s->current_picture_ptr->frame_num= h->prev_frame_num;
1873 ff_generate_sliding_window_mmcos(h);
1874 ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1875 /* Error concealment: if a ref is missing, copy the previous ref in its place.
1876 * FIXME: avoiding a memcpy would be nice, but ref handling makes many assumptions
1877 * about there being no actual duplicates.
1878 * FIXME: this doesn't copy padding for out-of-frame motion vectors. Given we're
1879 * concealing a lost frame, this probably isn't noticable by comparison, but it should
1881 if (h->short_ref_count) {
1883 av_image_copy(h->short_ref[0]->data, h->short_ref[0]->linesize,
1884 (const uint8_t**)prev->data, prev->linesize,
1885 s->avctx->pix_fmt, s->mb_width*16, s->mb_height*16);
1886 h->short_ref[0]->poc = prev->poc+2;
1888 h->short_ref[0]->frame_num = h->prev_frame_num;
1892 /* See if we have a decoded first field looking for a pair... */
1893 if (s0->first_field) {
1894 assert(s0->current_picture_ptr);
1895 assert(s0->current_picture_ptr->data[0]);
1896 assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
1898 /* figure out if we have a complementary field pair */
1899 if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
1901 * Previous field is unmatched. Don't display it, but let it
1902 * remain for reference if marked as such.
1904 s0->current_picture_ptr = NULL;
1905 s0->first_field = FIELD_PICTURE;
1908 if (h->nal_ref_idc &&
1909 s0->current_picture_ptr->reference &&
1910 s0->current_picture_ptr->frame_num != h->frame_num) {
1912 * This and previous field were reference, but had
1913 * different frame_nums. Consider this field first in
1914 * pair. Throw away previous field except for reference
1917 s0->first_field = 1;
1918 s0->current_picture_ptr = NULL;
1921 /* Second field in complementary pair */
1922 s0->first_field = 0;
1927 /* Frame or first field in a potentially complementary pair */
1928 assert(!s0->current_picture_ptr);
1929 s0->first_field = FIELD_PICTURE;
1932 if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) {
1933 s0->first_field = 0;
1940 s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
1942 assert(s->mb_num == s->mb_width * s->mb_height);
1943 if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
1944 first_mb_in_slice >= s->mb_num){
1945 av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1948 s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
1949 s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
1950 if (s->picture_structure == PICT_BOTTOM_FIELD)
1951 s->resync_mb_y = s->mb_y = s->mb_y + 1;
1952 assert(s->mb_y < s->mb_height);
1954 if(s->picture_structure==PICT_FRAME){
1955 h->curr_pic_num= h->frame_num;
1956 h->max_pic_num= 1<< h->sps.log2_max_frame_num;
1958 h->curr_pic_num= 2*h->frame_num + 1;
1959 h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
1962 if(h->nal_unit_type == NAL_IDR_SLICE){
1963 get_ue_golomb(&s->gb); /* idr_pic_id */
1966 if(h->sps.poc_type==0){
1967 h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
1969 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
1970 h->delta_poc_bottom= get_se_golomb(&s->gb);
1974 if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
1975 h->delta_poc[0]= get_se_golomb(&s->gb);
1977 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
1978 h->delta_poc[1]= get_se_golomb(&s->gb);
1983 if(h->pps.redundant_pic_cnt_present){
1984 h->redundant_pic_count= get_ue_golomb(&s->gb);
1987 //set defaults, might be overridden a few lines later
1988 h->ref_count[0]= h->pps.ref_count[0];
1989 h->ref_count[1]= h->pps.ref_count[1];
1991 if(h->slice_type_nos != FF_I_TYPE){
1992 if(h->slice_type_nos == FF_B_TYPE){
1993 h->direct_spatial_mv_pred= get_bits1(&s->gb);
1995 num_ref_idx_active_override_flag= get_bits1(&s->gb);
1997 if(num_ref_idx_active_override_flag){
1998 h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
1999 if(h->slice_type_nos==FF_B_TYPE)
2000 h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
2002 if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
2003 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
2004 h->ref_count[0]= h->ref_count[1]= 1;
2008 if(h->slice_type_nos == FF_B_TYPE)
2015 if(!default_ref_list_done){
2016 ff_h264_fill_default_ref_list(h);
2019 if(h->slice_type_nos!=FF_I_TYPE && ff_h264_decode_ref_pic_list_reordering(h) < 0)
2022 if(h->slice_type_nos!=FF_I_TYPE){
2023 s->last_picture_ptr= &h->ref_list[0][0];
2024 ff_copy_picture(&s->last_picture, s->last_picture_ptr);
2026 if(h->slice_type_nos==FF_B_TYPE){
2027 s->next_picture_ptr= &h->ref_list[1][0];
2028 ff_copy_picture(&s->next_picture, s->next_picture_ptr);
2031 if( (h->pps.weighted_pred && h->slice_type_nos == FF_P_TYPE )
2032 || (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
2033 pred_weight_table(h);
2034 else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE){
2035 implicit_weight_table(h, -1);
2038 for (i = 0; i < 2; i++) {
2039 h->luma_weight_flag[i] = 0;
2040 h->chroma_weight_flag[i] = 0;
2045 ff_h264_decode_ref_pic_marking(h0, &s->gb);
2048 ff_h264_fill_mbaff_ref_list(h);
2050 if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE){
2051 implicit_weight_table(h, 0);
2052 implicit_weight_table(h, 1);
2056 if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
2057 ff_h264_direct_dist_scale_factor(h);
2058 ff_h264_direct_ref_list_init(h);
2060 if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
2061 tmp = get_ue_golomb_31(&s->gb);
2063 av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
2066 h->cabac_init_idc= tmp;
2069 h->last_qscale_diff = 0;
2070 tmp = h->pps.init_qp + get_se_golomb(&s->gb);
2072 av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
2076 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2077 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2078 //FIXME qscale / qp ... stuff
2079 if(h->slice_type == FF_SP_TYPE){
2080 get_bits1(&s->gb); /* sp_for_switch_flag */
2082 if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
2083 get_se_golomb(&s->gb); /* slice_qs_delta */
2086 h->deblocking_filter = 1;
2087 h->slice_alpha_c0_offset = 52;
2088 h->slice_beta_offset = 52;
2089 if( h->pps.deblocking_filter_parameters_present ) {
2090 tmp= get_ue_golomb_31(&s->gb);
2092 av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
2095 h->deblocking_filter= tmp;
2096 if(h->deblocking_filter < 2)
2097 h->deblocking_filter^= 1; // 1<->0
2099 if( h->deblocking_filter ) {
2100 h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
2101 h->slice_beta_offset += get_se_golomb(&s->gb) << 1;
2102 if( h->slice_alpha_c0_offset > 104U
2103 || h->slice_beta_offset > 104U){
2104 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);
2110 if( s->avctx->skip_loop_filter >= AVDISCARD_ALL
2111 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
2112 ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR && h->slice_type_nos == FF_B_TYPE)
2113 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2114 h->deblocking_filter= 0;
2116 if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
2117 if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
2118 /* Cheat slightly for speed:
2119 Do not bother to deblock across slices. */
2120 h->deblocking_filter = 2;
2122 h0->max_contexts = 1;
2123 if(!h0->single_decode_warning) {
2124 av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
2125 h0->single_decode_warning = 1;
2128 return 1; // deblocking switched inside frame
2131 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]);
2134 if( h->pps.num_slice_groups > 1 && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
2135 slice_group_change_cycle= get_bits(&s->gb, ?);
2138 h0->last_slice_type = slice_type;
2139 h->slice_num = ++h0->current_slice;
2140 if(h->slice_num >= MAX_SLICES){
2141 av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
2146 int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
2147 for(i=0; i<16; i++){
2149 if(h->ref_list[j][i].data[0]){
2151 uint8_t *base= h->ref_list[j][i].base[0];
2152 for(k=0; k<h->short_ref_count; k++)
2153 if(h->short_ref[k]->base[0] == base){
2157 for(k=0; k<h->long_ref_count; k++)
2158 if(h->long_ref[k] && h->long_ref[k]->base[0] == base){
2159 id_list[i]= h->short_ref_count + k;
2168 ref2frm[i+2]= 4*id_list[i]
2169 +(h->ref_list[j][i].reference&3);
2172 for(i=16; i<48; i++)
2173 ref2frm[i+4]= 4*id_list[(i-16)>>1]
2174 +(h->ref_list[j][i].reference&3);
2177 h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
2178 h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
2180 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
2181 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",
2183 (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
2185 av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
2186 pps_id, h->frame_num,
2187 s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
2188 h->ref_count[0], h->ref_count[1],
2190 h->deblocking_filter, h->slice_alpha_c0_offset/2-26, h->slice_beta_offset/2-26,
2192 h->use_weight==1 && h->use_weight_chroma ? "c" : "",
2193 h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
2200 int ff_h264_get_slice_type(const H264Context *h)
2202 switch (h->slice_type) {
2203 case FF_P_TYPE: return 0;
2204 case FF_B_TYPE: return 1;
2205 case FF_I_TYPE: return 2;
2206 case FF_SP_TYPE: return 3;
2207 case FF_SI_TYPE: return 4;
2214 * @return non zero if the loop filter can be skiped
2216 static int fill_filter_caches(H264Context *h, int mb_type){
2217 MpegEncContext * const s = &h->s;
2218 const int mb_xy= h->mb_xy;
2219 int top_xy, left_xy[2];
2220 int top_type, left_type[2];
2222 top_xy = mb_xy - (s->mb_stride << MB_FIELD);
2224 //FIXME deblocking could skip the intra and nnz parts.
2226 /* Wow, what a mess, why didn't they simplify the interlacing & intra
2227 * stuff, I can't imagine that these complex rules are worth it. */
2229 left_xy[1] = left_xy[0] = mb_xy-1;
2231 const int left_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[mb_xy-1]);
2232 const int curr_mb_field_flag = IS_INTERLACED(mb_type);
2234 if (left_mb_field_flag != curr_mb_field_flag) {
2235 left_xy[0] -= s->mb_stride;
2238 if(curr_mb_field_flag){
2239 top_xy += s->mb_stride & (((s->current_picture.mb_type[top_xy ]>>7)&1)-1);
2241 if (left_mb_field_flag != curr_mb_field_flag) {
2242 left_xy[1] += s->mb_stride;
2247 h->top_mb_xy = top_xy;
2248 h->left_mb_xy[0] = left_xy[0];
2249 h->left_mb_xy[1] = left_xy[1];
2251 //for sufficiently low qp, filtering wouldn't do anything
2252 //this is a conservative estimate: could also check beta_offset and more accurate chroma_qp
2253 int qp_thresh = h->qp_thresh; //FIXME strictly we should store qp_thresh for each mb of a slice
2254 int qp = s->current_picture.qscale_table[mb_xy];
2256 && (left_xy[0]<0 || ((qp + s->current_picture.qscale_table[left_xy[0]] + 1)>>1) <= qp_thresh)
2257 && (top_xy < 0 || ((qp + s->current_picture.qscale_table[top_xy ] + 1)>>1) <= qp_thresh)){
2260 if( (left_xy[0]< 0 || ((qp + s->current_picture.qscale_table[left_xy[1] ] + 1)>>1) <= qp_thresh)
2261 && (top_xy < s->mb_stride || ((qp + s->current_picture.qscale_table[top_xy -s->mb_stride] + 1)>>1) <= qp_thresh))
2266 top_type = s->current_picture.mb_type[top_xy] ;
2267 left_type[0] = s->current_picture.mb_type[left_xy[0]];
2268 left_type[1] = s->current_picture.mb_type[left_xy[1]];
2269 if(h->deblocking_filter == 2){
2270 if(h->slice_table[top_xy ] != h->slice_num) top_type= 0;
2271 if(h->slice_table[left_xy[0] ] != h->slice_num) left_type[0]= left_type[1]= 0;
2273 if(h->slice_table[top_xy ] == 0xFFFF) top_type= 0;
2274 if(h->slice_table[left_xy[0] ] == 0xFFFF) left_type[0]= left_type[1] =0;
2276 h->top_type = top_type ;
2277 h->left_type[0]= left_type[0];
2278 h->left_type[1]= left_type[1];
2280 if(IS_INTRA(mb_type))
2283 AV_COPY64(&h->non_zero_count_cache[0+8*1], &h->non_zero_count[mb_xy][ 0]);
2284 AV_COPY64(&h->non_zero_count_cache[0+8*2], &h->non_zero_count[mb_xy][ 8]);
2285 AV_COPY32(&h->non_zero_count_cache[0+8*5], &h->non_zero_count[mb_xy][16]);
2286 AV_COPY32(&h->non_zero_count_cache[4+8*3], &h->non_zero_count[mb_xy][20]);
2287 AV_COPY64(&h->non_zero_count_cache[0+8*4], &h->non_zero_count[mb_xy][24]);
2289 h->cbp= h->cbp_table[mb_xy];
2293 for(list=0; list<h->list_count; list++){
2296 int16_t (*mv_dst)[2];
2297 int16_t (*mv_src)[2];
2299 if(!USES_LIST(mb_type, list)){
2300 fill_rectangle( h->mv_cache[list][scan8[0]], 4, 4, 8, pack16to32(0,0), 4);
2301 AV_WN32A(&h->ref_cache[list][scan8[ 0]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2302 AV_WN32A(&h->ref_cache[list][scan8[ 2]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2303 AV_WN32A(&h->ref_cache[list][scan8[ 8]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2304 AV_WN32A(&h->ref_cache[list][scan8[10]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2308 ref = &s->current_picture.ref_index[list][4*mb_xy];
2310 int (*ref2frm)[64] = h->ref2frm[ h->slice_num&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2311 AV_WN32A(&h->ref_cache[list][scan8[ 0]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2312 AV_WN32A(&h->ref_cache[list][scan8[ 2]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2314 AV_WN32A(&h->ref_cache[list][scan8[ 8]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2315 AV_WN32A(&h->ref_cache[list][scan8[10]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2318 b_stride = h->b_stride;
2319 mv_dst = &h->mv_cache[list][scan8[0]];
2320 mv_src = &s->current_picture.motion_val[list][4*s->mb_x + 4*s->mb_y*b_stride];
2322 AV_COPY128(mv_dst + 8*y, mv_src + y*b_stride);
2337 //FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
2339 AV_COPY32(&h->non_zero_count_cache[4+8*0], &h->non_zero_count[top_xy][4+3*8]);
2343 h->non_zero_count_cache[3+8*1]= h->non_zero_count[left_xy[0]][7+0*8];
2344 h->non_zero_count_cache[3+8*2]= h->non_zero_count[left_xy[0]][7+1*8];
2345 h->non_zero_count_cache[3+8*3]= h->non_zero_count[left_xy[0]][7+2*8];
2346 h->non_zero_count_cache[3+8*4]= h->non_zero_count[left_xy[0]][7+3*8];
2349 // CAVLC 8x8dct requires NNZ values for residual decoding that differ from what the loop filter needs
2350 if(!CABAC && h->pps.transform_8x8_mode){
2351 if(IS_8x8DCT(top_type)){
2352 h->non_zero_count_cache[4+8*0]=
2353 h->non_zero_count_cache[5+8*0]= h->cbp_table[top_xy] & 4;
2354 h->non_zero_count_cache[6+8*0]=
2355 h->non_zero_count_cache[7+8*0]= h->cbp_table[top_xy] & 8;
2357 if(IS_8x8DCT(left_type[0])){
2358 h->non_zero_count_cache[3+8*1]=
2359 h->non_zero_count_cache[3+8*2]= h->cbp_table[left_xy[0]]&2; //FIXME check MBAFF
2361 if(IS_8x8DCT(left_type[1])){
2362 h->non_zero_count_cache[3+8*3]=
2363 h->non_zero_count_cache[3+8*4]= h->cbp_table[left_xy[1]]&8; //FIXME check MBAFF
2366 if(IS_8x8DCT(mb_type)){
2367 h->non_zero_count_cache[scan8[0 ]]= h->non_zero_count_cache[scan8[1 ]]=
2368 h->non_zero_count_cache[scan8[2 ]]= h->non_zero_count_cache[scan8[3 ]]= h->cbp & 1;
2370 h->non_zero_count_cache[scan8[0+ 4]]= h->non_zero_count_cache[scan8[1+ 4]]=
2371 h->non_zero_count_cache[scan8[2+ 4]]= h->non_zero_count_cache[scan8[3+ 4]]= h->cbp & 2;
2373 h->non_zero_count_cache[scan8[0+ 8]]= h->non_zero_count_cache[scan8[1+ 8]]=
2374 h->non_zero_count_cache[scan8[2+ 8]]= h->non_zero_count_cache[scan8[3+ 8]]= h->cbp & 4;
2376 h->non_zero_count_cache[scan8[0+12]]= h->non_zero_count_cache[scan8[1+12]]=
2377 h->non_zero_count_cache[scan8[2+12]]= h->non_zero_count_cache[scan8[3+12]]= h->cbp & 8;
2381 if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
2383 for(list=0; list<h->list_count; list++){
2384 if(USES_LIST(top_type, list)){
2385 const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
2386 const int b8_xy= 4*top_xy + 2;
2387 int (*ref2frm)[64] = h->ref2frm[ h->slice_table[top_xy]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2388 AV_COPY128(h->mv_cache[list][scan8[0] + 0 - 1*8], s->current_picture.motion_val[list][b_xy + 0]);
2389 h->ref_cache[list][scan8[0] + 0 - 1*8]=
2390 h->ref_cache[list][scan8[0] + 1 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 0]];
2391 h->ref_cache[list][scan8[0] + 2 - 1*8]=
2392 h->ref_cache[list][scan8[0] + 3 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 1]];
2394 AV_ZERO128(h->mv_cache[list][scan8[0] + 0 - 1*8]);
2395 AV_WN32A(&h->ref_cache[list][scan8[0] + 0 - 1*8], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2398 if(!IS_INTERLACED(mb_type^left_type[0])){
2399 if(USES_LIST(left_type[0], list)){
2400 const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
2401 const int b8_xy= 4*left_xy[0] + 1;
2402 int (*ref2frm)[64] = h->ref2frm[ h->slice_table[left_xy[0]]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2403 AV_COPY32(h->mv_cache[list][scan8[0] - 1 + 0 ], s->current_picture.motion_val[list][b_xy + h->b_stride*0]);
2404 AV_COPY32(h->mv_cache[list][scan8[0] - 1 + 8 ], s->current_picture.motion_val[list][b_xy + h->b_stride*1]);
2405 AV_COPY32(h->mv_cache[list][scan8[0] - 1 +16 ], s->current_picture.motion_val[list][b_xy + h->b_stride*2]);
2406 AV_COPY32(h->mv_cache[list][scan8[0] - 1 +24 ], s->current_picture.motion_val[list][b_xy + h->b_stride*3]);
2407 h->ref_cache[list][scan8[0] - 1 + 0 ]=
2408 h->ref_cache[list][scan8[0] - 1 + 8 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 2*0]];
2409 h->ref_cache[list][scan8[0] - 1 +16 ]=
2410 h->ref_cache[list][scan8[0] - 1 +24 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 2*1]];
2412 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 + 0 ]);
2413 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 + 8 ]);
2414 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 +16 ]);
2415 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 +24 ]);
2416 h->ref_cache[list][scan8[0] - 1 + 0 ]=
2417 h->ref_cache[list][scan8[0] - 1 + 8 ]=
2418 h->ref_cache[list][scan8[0] - 1 + 16 ]=
2419 h->ref_cache[list][scan8[0] - 1 + 24 ]= LIST_NOT_USED;
2428 static void loop_filter(H264Context *h){
2429 MpegEncContext * const s = &h->s;
2430 uint8_t *dest_y, *dest_cb, *dest_cr;
2431 int linesize, uvlinesize, mb_x, mb_y;
2432 const int end_mb_y= s->mb_y + FRAME_MBAFF;
2433 const int old_slice_type= h->slice_type;
2435 if(h->deblocking_filter) {
2436 for(mb_x= 0; mb_x<s->mb_width; mb_x++){
2437 for(mb_y=end_mb_y - FRAME_MBAFF; mb_y<= end_mb_y; mb_y++){
2439 mb_xy = h->mb_xy = mb_x + mb_y*s->mb_stride;
2440 h->slice_num= h->slice_table[mb_xy];
2441 mb_type= s->current_picture.mb_type[mb_xy];
2442 h->list_count= h->list_counts[mb_xy];
2445 h->mb_mbaff = h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2449 dest_y = s->current_picture.data[0] + (mb_x + mb_y * s->linesize ) * 16;
2450 dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
2451 dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
2452 //FIXME simplify above
2455 linesize = h->mb_linesize = s->linesize * 2;
2456 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2457 if(mb_y&1){ //FIXME move out of this function?
2458 dest_y -= s->linesize*15;
2459 dest_cb-= s->uvlinesize*7;
2460 dest_cr-= s->uvlinesize*7;
2463 linesize = h->mb_linesize = s->linesize;
2464 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2466 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0);
2467 if(fill_filter_caches(h, mb_type))
2469 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2470 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2473 ff_h264_filter_mb (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2475 ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2480 h->slice_type= old_slice_type;
2482 s->mb_y= end_mb_y - FRAME_MBAFF;
2483 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2484 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2487 static void predict_field_decoding_flag(H264Context *h){
2488 MpegEncContext * const s = &h->s;
2489 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2490 int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
2491 ? s->current_picture.mb_type[mb_xy-1]
2492 : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
2493 ? s->current_picture.mb_type[mb_xy-s->mb_stride]
2495 h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2498 static int decode_slice(struct AVCodecContext *avctx, void *arg){
2499 H264Context *h = *(void**)arg;
2500 MpegEncContext * const s = &h->s;
2501 const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
2505 h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
2506 (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
2508 if( h->pps.cabac ) {
2510 align_get_bits( &s->gb );
2513 ff_init_cabac_states( &h->cabac);
2514 ff_init_cabac_decoder( &h->cabac,
2515 s->gb.buffer + get_bits_count(&s->gb)/8,
2516 (get_bits_left(&s->gb) + 7)/8);
2518 ff_h264_init_cabac_states(h);
2522 int ret = ff_h264_decode_mb_cabac(h);
2524 //STOP_TIMER("decode_mb_cabac")
2526 if(ret>=0) ff_h264_hl_decode_mb(h);
2528 if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
2531 ret = ff_h264_decode_mb_cabac(h);
2533 if(ret>=0) ff_h264_hl_decode_mb(h);
2536 eos = get_cabac_terminate( &h->cabac );
2538 if((s->workaround_bugs & FF_BUG_TRUNCATED) && h->cabac.bytestream > h->cabac.bytestream_end + 2){
2539 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);
2542 if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
2543 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);
2544 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);
2548 if( ++s->mb_x >= s->mb_width ) {
2551 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2553 if(FIELD_OR_MBAFF_PICTURE) {
2555 if(FRAME_MBAFF && s->mb_y < s->mb_height)
2556 predict_field_decoding_flag(h);
2560 if( eos || s->mb_y >= s->mb_height ) {
2561 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2562 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);
2569 int ret = ff_h264_decode_mb_cavlc(h);
2571 if(ret>=0) ff_h264_hl_decode_mb(h);
2573 if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
2575 ret = ff_h264_decode_mb_cavlc(h);
2577 if(ret>=0) ff_h264_hl_decode_mb(h);
2582 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2583 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);
2588 if(++s->mb_x >= s->mb_width){
2591 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2593 if(FIELD_OR_MBAFF_PICTURE) {
2595 if(FRAME_MBAFF && s->mb_y < s->mb_height)
2596 predict_field_decoding_flag(h);
2598 if(s->mb_y >= s->mb_height){
2599 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2601 if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
2602 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);
2606 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);
2613 if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
2614 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2615 if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
2616 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);
2620 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);
2629 for(;s->mb_y < s->mb_height; s->mb_y++){
2630 for(;s->mb_x < s->mb_width; s->mb_x++){
2631 int ret= decode_mb(h);
2633 ff_h264_hl_decode_mb(h);
2636 av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2637 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);
2642 if(++s->mb_x >= s->mb_width){
2644 if(++s->mb_y >= s->mb_height){
2645 if(get_bits_count(s->gb) == s->gb.size_in_bits){
2646 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);
2650 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);
2657 if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
2658 if(get_bits_count(s->gb) == s->gb.size_in_bits){
2659 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);
2663 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);
2670 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2673 return -1; //not reached
2677 * Call decode_slice() for each context.
2679 * @param h h264 master context
2680 * @param context_count number of contexts to execute
2682 static void execute_decode_slices(H264Context *h, int context_count){
2683 MpegEncContext * const s = &h->s;
2684 AVCodecContext * const avctx= s->avctx;
2688 if (s->avctx->hwaccel)
2690 if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2692 if(context_count == 1) {
2693 decode_slice(avctx, &h);
2695 for(i = 1; i < context_count; i++) {
2696 hx = h->thread_context[i];
2697 hx->s.error_recognition = avctx->error_recognition;
2698 hx->s.error_count = 0;
2701 avctx->execute(avctx, (void *)decode_slice,
2702 h->thread_context, NULL, context_count, sizeof(void*));
2704 /* pull back stuff from slices to master context */
2705 hx = h->thread_context[context_count - 1];
2706 s->mb_x = hx->s.mb_x;
2707 s->mb_y = hx->s.mb_y;
2708 s->dropable = hx->s.dropable;
2709 s->picture_structure = hx->s.picture_structure;
2710 for(i = 1; i < context_count; i++)
2711 h->s.error_count += h->thread_context[i]->s.error_count;
2716 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
2717 MpegEncContext * const s = &h->s;
2718 AVCodecContext * const avctx= s->avctx;
2720 H264Context *hx; ///< thread context
2721 int context_count = 0;
2722 int next_avc= h->is_avc ? 0 : buf_size;
2724 h->max_contexts = avctx->thread_count;
2727 for(i=0; i<50; i++){
2728 av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
2731 if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
2732 h->current_slice = 0;
2733 if (!s->first_field)
2734 s->current_picture_ptr= NULL;
2735 ff_h264_reset_sei(h);
2746 if(buf_index >= next_avc) {
2747 if(buf_index >= buf_size) break;
2749 for(i = 0; i < h->nal_length_size; i++)
2750 nalsize = (nalsize << 8) | buf[buf_index++];
2751 if(nalsize <= 0 || nalsize > buf_size - buf_index){
2752 av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
2755 next_avc= buf_index + nalsize;
2757 // start code prefix search
2758 for(; buf_index + 3 < next_avc; buf_index++){
2759 // This should always succeed in the first iteration.
2760 if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
2764 if(buf_index+3 >= buf_size) break;
2767 if(buf_index >= next_avc) continue;
2770 hx = h->thread_context[context_count];
2772 ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index);
2773 if (ptr==NULL || dst_length < 0){
2776 i= buf_index + consumed;
2777 if((s->workaround_bugs & FF_BUG_AUTODETECT) && i+3<next_avc &&
2778 buf[i]==0x00 && buf[i+1]==0x00 && buf[i+2]==0x01 && buf[i+3]==0xE0)
2779 s->workaround_bugs |= FF_BUG_TRUNCATED;
2781 if(!(s->workaround_bugs & FF_BUG_TRUNCATED)){
2782 while(ptr[dst_length - 1] == 0 && dst_length > 0)
2785 bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
2787 if(s->avctx->debug&FF_DEBUG_STARTCODE){
2788 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);
2791 if (h->is_avc && (nalsize != consumed) && nalsize){
2792 av_log(h->s.avctx, AV_LOG_DEBUG, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
2795 buf_index += consumed;
2797 if( (s->hurry_up == 1 && h->nal_ref_idc == 0) //FIXME do not discard SEI id
2798 ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2803 switch(hx->nal_unit_type){
2805 if (h->nal_unit_type != NAL_IDR_SLICE) {
2806 av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
2809 idr(h); //FIXME ensure we don't loose some frames if there is reordering
2811 init_get_bits(&hx->s.gb, ptr, bit_length);
2813 hx->inter_gb_ptr= &hx->s.gb;
2814 hx->s.data_partitioning = 0;
2816 if((err = decode_slice_header(hx, h)))
2819 if (h->current_slice == 1) {
2820 if (s->avctx->hwaccel && s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
2822 if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2823 ff_vdpau_h264_picture_start(s);
2826 s->current_picture_ptr->key_frame |=
2827 (hx->nal_unit_type == NAL_IDR_SLICE) ||
2828 (h->sei_recovery_frame_cnt >= 0);
2829 if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5
2830 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2831 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=FF_B_TYPE)
2832 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2833 && avctx->skip_frame < AVDISCARD_ALL){
2834 if(avctx->hwaccel) {
2835 if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0)
2838 if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
2839 static const uint8_t start_code[] = {0x00, 0x00, 0x01};
2840 ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
2841 ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
2847 init_get_bits(&hx->s.gb, ptr, bit_length);
2849 hx->inter_gb_ptr= NULL;
2851 if ((err = decode_slice_header(hx, h)) < 0)
2854 hx->s.data_partitioning = 1;
2858 init_get_bits(&hx->intra_gb, ptr, bit_length);
2859 hx->intra_gb_ptr= &hx->intra_gb;
2862 init_get_bits(&hx->inter_gb, ptr, bit_length);
2863 hx->inter_gb_ptr= &hx->inter_gb;
2865 if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
2866 && s->context_initialized
2868 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2869 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=FF_B_TYPE)
2870 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2871 && avctx->skip_frame < AVDISCARD_ALL)
2875 init_get_bits(&s->gb, ptr, bit_length);
2876 ff_h264_decode_sei(h);
2879 init_get_bits(&s->gb, ptr, bit_length);
2880 ff_h264_decode_seq_parameter_set(h);
2882 if(s->flags& CODEC_FLAG_LOW_DELAY)
2885 if(avctx->has_b_frames < 2)
2886 avctx->has_b_frames= !s->low_delay;
2889 init_get_bits(&s->gb, ptr, bit_length);
2891 ff_h264_decode_picture_parameter_set(h, bit_length);
2895 case NAL_END_SEQUENCE:
2896 case NAL_END_STREAM:
2897 case NAL_FILLER_DATA:
2899 case NAL_AUXILIARY_SLICE:
2902 av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", hx->nal_unit_type, bit_length);
2905 if(context_count == h->max_contexts) {
2906 execute_decode_slices(h, context_count);
2911 av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
2913 /* Slice could not be decoded in parallel mode, copy down
2914 * NAL unit stuff to context 0 and restart. Note that
2915 * rbsp_buffer is not transferred, but since we no longer
2916 * run in parallel mode this should not be an issue. */
2917 h->nal_unit_type = hx->nal_unit_type;
2918 h->nal_ref_idc = hx->nal_ref_idc;
2924 execute_decode_slices(h, context_count);
2929 * returns the number of bytes consumed for building the current frame
2931 static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
2932 if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
2933 if(pos+10>buf_size) pos=buf_size; // oops ;)
2938 static int decode_frame(AVCodecContext *avctx,
2939 void *data, int *data_size,
2942 const uint8_t *buf = avpkt->data;
2943 int buf_size = avpkt->size;
2944 H264Context *h = avctx->priv_data;
2945 MpegEncContext *s = &h->s;
2946 AVFrame *pict = data;
2949 s->flags= avctx->flags;
2950 s->flags2= avctx->flags2;
2952 /* end of stream, output what is still in the buffers */
2954 if (buf_size == 0) {
2958 //FIXME factorize this with the output code below
2959 out = h->delayed_pic[0];
2961 for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2962 if(h->delayed_pic[i]->poc < out->poc){
2963 out = h->delayed_pic[i];
2967 for(i=out_idx; h->delayed_pic[i]; i++)
2968 h->delayed_pic[i] = h->delayed_pic[i+1];
2971 *data_size = sizeof(AVFrame);
2972 *pict= *(AVFrame*)out;
2978 buf_index=decode_nal_units(h, buf, buf_size);
2982 if (!s->current_picture_ptr && h->nal_unit_type == NAL_END_SEQUENCE) {
2987 if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
2988 if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
2989 av_log(avctx, AV_LOG_ERROR, "no frame!\n");
2993 if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
2994 Picture *out = s->current_picture_ptr;
2995 Picture *cur = s->current_picture_ptr;
2996 int i, pics, out_of_order, out_idx;
3000 if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
3001 /* Wait for second field. */
3005 cur->interlaced_frame = 0;
3006 cur->repeat_pict = 0;
3008 /* Signal interlacing information externally. */
3009 /* Prioritize picture timing SEI information over used decoding process if it exists. */
3011 if(h->sps.pic_struct_present_flag){
3012 switch (h->sei_pic_struct)
3014 case SEI_PIC_STRUCT_FRAME:
3016 case SEI_PIC_STRUCT_TOP_FIELD:
3017 case SEI_PIC_STRUCT_BOTTOM_FIELD:
3018 cur->interlaced_frame = 1;
3020 case SEI_PIC_STRUCT_TOP_BOTTOM:
3021 case SEI_PIC_STRUCT_BOTTOM_TOP:
3022 if (FIELD_OR_MBAFF_PICTURE)
3023 cur->interlaced_frame = 1;
3025 // try to flag soft telecine progressive
3026 cur->interlaced_frame = h->prev_interlaced_frame;
3028 case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
3029 case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
3030 // Signal the possibility of telecined film externally (pic_struct 5,6)
3031 // From these hints, let the applications decide if they apply deinterlacing.
3032 cur->repeat_pict = 1;
3034 case SEI_PIC_STRUCT_FRAME_DOUBLING:
3035 // Force progressive here, as doubling interlaced frame is a bad idea.
3036 cur->repeat_pict = 2;
3038 case SEI_PIC_STRUCT_FRAME_TRIPLING:
3039 cur->repeat_pict = 4;
3043 if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
3044 cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0;
3046 /* Derive interlacing flag from used decoding process. */
3047 cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
3049 h->prev_interlaced_frame = cur->interlaced_frame;
3051 if (cur->field_poc[0] != cur->field_poc[1]){
3052 /* Derive top_field_first from field pocs. */
3053 cur->top_field_first = cur->field_poc[0] < cur->field_poc[1];
3055 if(cur->interlaced_frame || h->sps.pic_struct_present_flag){
3056 /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */
3057 if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM
3058 || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
3059 cur->top_field_first = 1;
3061 cur->top_field_first = 0;
3063 /* Most likely progressive */
3064 cur->top_field_first = 0;
3068 //FIXME do something with unavailable reference frames
3070 /* Sort B-frames into display order */
3072 if(h->sps.bitstream_restriction_flag
3073 && s->avctx->has_b_frames < h->sps.num_reorder_frames){
3074 s->avctx->has_b_frames = h->sps.num_reorder_frames;
3078 if( s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT
3079 && !h->sps.bitstream_restriction_flag){
3080 s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT;
3085 while(h->delayed_pic[pics]) pics++;
3087 assert(pics <= MAX_DELAYED_PIC_COUNT);
3089 h->delayed_pic[pics++] = cur;
3090 if(cur->reference == 0)
3091 cur->reference = DELAYED_PIC_REF;
3093 out = h->delayed_pic[0];
3095 for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
3096 if(h->delayed_pic[i]->poc < out->poc){
3097 out = h->delayed_pic[i];
3100 if(s->avctx->has_b_frames == 0 && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset))
3101 h->outputed_poc= INT_MIN;
3102 out_of_order = out->poc < h->outputed_poc;
3104 if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames)
3106 else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT)
3108 ((h->outputed_poc != INT_MIN && out->poc > h->outputed_poc + 2)
3109 || cur->pict_type == FF_B_TYPE)))
3112 s->avctx->has_b_frames++;
3115 if(out_of_order || pics > s->avctx->has_b_frames){
3116 out->reference &= ~DELAYED_PIC_REF;
3117 for(i=out_idx; h->delayed_pic[i]; i++)
3118 h->delayed_pic[i] = h->delayed_pic[i+1];
3120 if(!out_of_order && pics > s->avctx->has_b_frames){
3121 *data_size = sizeof(AVFrame);
3123 if(out_idx==0 && h->delayed_pic[0] && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) {
3124 h->outputed_poc = INT_MIN;
3126 h->outputed_poc = out->poc;
3127 *pict= *(AVFrame*)out;
3129 av_log(avctx, AV_LOG_DEBUG, "no picture\n");
3134 assert(pict->data[0] || !*data_size);
3135 ff_print_debug_info(s, pict);
3136 //printf("out %d\n", (int)pict->data[0]);
3138 return get_consumed_bytes(s, buf_index, buf_size);
3141 static inline void fill_mb_avail(H264Context *h){
3142 MpegEncContext * const s = &h->s;
3143 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
3146 h->mb_avail[0]= s->mb_x && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num;
3147 h->mb_avail[1]= h->slice_table[mb_xy - s->mb_stride ] == h->slice_num;
3148 h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num;
3154 h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
3155 h->mb_avail[4]= 1; //FIXME move out
3156 h->mb_avail[5]= 0; //FIXME move out
3164 #define SIZE (COUNT*40)
3170 // int int_temp[10000];
3172 AVCodecContext avctx;
3174 dsputil_init(&dsp, &avctx);
3176 init_put_bits(&pb, temp, SIZE);
3177 printf("testing unsigned exp golomb\n");
3178 for(i=0; i<COUNT; i++){
3180 set_ue_golomb(&pb, i);
3181 STOP_TIMER("set_ue_golomb");
3183 flush_put_bits(&pb);
3185 init_get_bits(&gb, temp, 8*SIZE);
3186 for(i=0; i<COUNT; i++){
3189 s= show_bits(&gb, 24);
3192 j= get_ue_golomb(&gb);
3194 printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
3197 STOP_TIMER("get_ue_golomb");
3201 init_put_bits(&pb, temp, SIZE);
3202 printf("testing signed exp golomb\n");
3203 for(i=0; i<COUNT; i++){
3205 set_se_golomb(&pb, i - COUNT/2);
3206 STOP_TIMER("set_se_golomb");
3208 flush_put_bits(&pb);
3210 init_get_bits(&gb, temp, 8*SIZE);
3211 for(i=0; i<COUNT; i++){
3214 s= show_bits(&gb, 24);
3217 j= get_se_golomb(&gb);
3218 if(j != i - COUNT/2){
3219 printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
3222 STOP_TIMER("get_se_golomb");
3226 printf("testing 4x4 (I)DCT\n");
3229 uint8_t src[16], ref[16];
3230 uint64_t error= 0, max_error=0;
3232 for(i=0; i<COUNT; i++){
3234 // printf("%d %d %d\n", r1, r2, (r2-r1)*16);
3235 for(j=0; j<16; j++){
3236 ref[j]= random()%255;
3237 src[j]= random()%255;
3240 h264_diff_dct_c(block, src, ref, 4);
3243 for(j=0; j<16; j++){
3244 // printf("%d ", block[j]);
3245 block[j]= block[j]*4;
3246 if(j&1) block[j]= (block[j]*4 + 2)/5;
3247 if(j&4) block[j]= (block[j]*4 + 2)/5;
3251 h->h264dsp.h264_idct_add(ref, block, 4);
3252 /* for(j=0; j<16; j++){
3253 printf("%d ", ref[j]);
3257 for(j=0; j<16; j++){
3258 int diff= FFABS(src[j] - ref[j]);
3261 max_error= FFMAX(max_error, diff);
3264 printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
3265 printf("testing quantizer\n");
3266 for(qp=0; qp<52; qp++){
3268 src1_block[i]= src2_block[i]= random()%255;
3271 printf("Testing NAL layer\n");
3273 uint8_t bitstream[COUNT];
3274 uint8_t nal[COUNT*2];
3276 memset(&h, 0, sizeof(H264Context));
3278 for(i=0; i<COUNT; i++){
3286 for(j=0; j<COUNT; j++){
3287 bitstream[j]= (random() % 255) + 1;
3290 for(j=0; j<zeros; j++){
3291 int pos= random() % COUNT;
3292 while(bitstream[pos] == 0){
3301 nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
3303 printf("encoding failed\n");
3307 out= ff_h264_decode_nal(&h, nal, &out_length, &consumed, nal_length);
3311 if(out_length != COUNT){
3312 printf("incorrect length %d %d\n", out_length, COUNT);
3316 if(consumed != nal_length){
3317 printf("incorrect consumed length %d %d\n", nal_length, consumed);
3321 if(memcmp(bitstream, out, COUNT)){
3322 printf("mismatch\n");
3328 printf("Testing RBSP\n");
3336 av_cold void ff_h264_free_context(H264Context *h)
3340 free_tables(h, 1); //FIXME cleanup init stuff perhaps
3342 for(i = 0; i < MAX_SPS_COUNT; i++)
3343 av_freep(h->sps_buffers + i);
3345 for(i = 0; i < MAX_PPS_COUNT; i++)
3346 av_freep(h->pps_buffers + i);
3349 av_cold int ff_h264_decode_end(AVCodecContext *avctx)
3351 H264Context *h = avctx->priv_data;
3352 MpegEncContext *s = &h->s;
3354 ff_h264_free_context(h);
3358 // memset(h, 0, sizeof(H264Context));
3364 AVCodec h264_decoder = {
3368 sizeof(H264Context),
3369 ff_h264_decode_init,
3373 /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY,
3375 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
3378 #if CONFIG_H264_VDPAU_DECODER
3379 AVCodec h264_vdpau_decoder = {
3383 sizeof(H264Context),
3384 ff_h264_decode_init,
3388 CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3390 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
3391 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_VDPAU_H264, PIX_FMT_NONE},