2 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * H.264 / AVC / MPEG4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
31 #include "mpegvideo.h"
34 #include "h264_mvpred.h"
35 #include "h264_parser.h"
38 #include "rectangle.h"
39 #include "vdpau_internal.h"
46 static const uint8_t rem6[52]={
47 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3,
50 static const uint8_t div6[52]={
51 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
54 static const enum PixelFormat hwaccel_pixfmt_list_h264_jpeg_420[] = {
61 void ff_h264_write_back_intra_pred_mode(H264Context *h){
62 int8_t *mode= h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
64 AV_COPY32(mode, h->intra4x4_pred_mode_cache + 4 + 8*4);
65 mode[4]= h->intra4x4_pred_mode_cache[7+8*3];
66 mode[5]= h->intra4x4_pred_mode_cache[7+8*2];
67 mode[6]= h->intra4x4_pred_mode_cache[7+8*1];
71 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
73 int ff_h264_check_intra4x4_pred_mode(H264Context *h){
74 MpegEncContext * const s = &h->s;
75 static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
76 static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
79 if(!(h->top_samples_available&0x8000)){
81 int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
83 av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
86 h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
91 if((h->left_samples_available&0x8888)!=0x8888){
92 static const int mask[4]={0x8000,0x2000,0x80,0x20};
94 if(!(h->left_samples_available&mask[i])){
95 int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
97 av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
100 h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
107 } //FIXME cleanup like ff_h264_check_intra_pred_mode
110 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
112 int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
113 MpegEncContext * const s = &h->s;
114 static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
115 static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
118 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);
122 if(!(h->top_samples_available&0x8000)){
125 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);
130 if((h->left_samples_available&0x8080) != 0x8080){
132 if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
133 mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
136 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);
144 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
149 // src[0]&0x80; //forbidden bit
150 h->nal_ref_idc= src[0]>>5;
151 h->nal_unit_type= src[0]&0x1F;
155 for(i=0; i<length; i++)
156 printf("%2X ", src[i]);
159 #if HAVE_FAST_UNALIGNED
162 for(i=0; i+1<length; i+=9){
163 if(!((~AV_RN64A(src+i) & (AV_RN64A(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
166 for(i=0; i+1<length; i+=5){
167 if(!((~AV_RN32A(src+i) & (AV_RN32A(src+i) - 0x01000101U)) & 0x80008080U))
170 if(i>0 && !src[i]) i--;
174 for(i=0; i+1<length; i+=2){
176 if(i>0 && src[i-1]==0) i--;
178 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
180 /* startcode, so we must be past the end */
188 if(i>=length-1){ //no escaped 0
190 *consumed= length+1; //+1 for the header
194 bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
195 av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
196 dst= h->rbsp_buffer[bufidx];
202 //printf("decoding esc\n");
206 //remove escapes (very rare 1:2^22)
208 dst[di++]= src[si++];
209 dst[di++]= src[si++];
210 }else if(src[si]==0 && src[si+1]==0){
211 if(src[si+2]==3){ //escape
216 }else //next start code
220 dst[di++]= src[si++];
223 dst[di++]= src[si++];
226 memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
229 *consumed= si + 1;//+1 for the header
230 //FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
234 int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
238 tprintf(h->s.avctx, "rbsp trailing %X\n", v);
248 * IDCT transforms the 16 dc values and dequantizes them.
249 * @param qp quantization parameter
251 static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
254 int temp[16]; //FIXME check if this is a good idea
255 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
256 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
258 //memset(block, 64, 2*256);
261 const int offset= y_offset[i];
262 const int z0= block[offset+stride*0] + block[offset+stride*4];
263 const int z1= block[offset+stride*0] - block[offset+stride*4];
264 const int z2= block[offset+stride*1] - block[offset+stride*5];
265 const int z3= block[offset+stride*1] + block[offset+stride*5];
274 const int offset= x_offset[i];
275 const int z0= temp[4*0+i] + temp[4*2+i];
276 const int z1= temp[4*0+i] - temp[4*2+i];
277 const int z2= temp[4*1+i] - temp[4*3+i];
278 const int z3= temp[4*1+i] + temp[4*3+i];
280 block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
281 block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
282 block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
283 block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
289 * DCT transforms the 16 dc values.
290 * @param qp quantization parameter ??? FIXME
292 static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
293 // const int qmul= dequant_coeff[qp][0];
295 int temp[16]; //FIXME check if this is a good idea
296 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
297 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
300 const int offset= y_offset[i];
301 const int z0= block[offset+stride*0] + block[offset+stride*4];
302 const int z1= block[offset+stride*0] - block[offset+stride*4];
303 const int z2= block[offset+stride*1] - block[offset+stride*5];
304 const int z3= block[offset+stride*1] + block[offset+stride*5];
313 const int offset= x_offset[i];
314 const int z0= temp[4*0+i] + temp[4*2+i];
315 const int z1= temp[4*0+i] - temp[4*2+i];
316 const int z2= temp[4*1+i] - temp[4*3+i];
317 const int z3= temp[4*1+i] + temp[4*3+i];
319 block[stride*0 +offset]= (z0 + z3)>>1;
320 block[stride*2 +offset]= (z1 + z2)>>1;
321 block[stride*8 +offset]= (z1 - z2)>>1;
322 block[stride*10+offset]= (z0 - z3)>>1;
330 static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
331 const int stride= 16*2;
332 const int xStride= 16;
335 a= block[stride*0 + xStride*0];
336 b= block[stride*0 + xStride*1];
337 c= block[stride*1 + xStride*0];
338 d= block[stride*1 + xStride*1];
345 block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
346 block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
347 block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
348 block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
352 static void chroma_dc_dct_c(DCTELEM *block){
353 const int stride= 16*2;
354 const int xStride= 16;
357 a= block[stride*0 + xStride*0];
358 b= block[stride*0 + xStride*1];
359 c= block[stride*1 + xStride*0];
360 d= block[stride*1 + xStride*1];
367 block[stride*0 + xStride*0]= (a+c);
368 block[stride*0 + xStride*1]= (e+b);
369 block[stride*1 + xStride*0]= (a-c);
370 block[stride*1 + xStride*1]= (e-b);
374 static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
375 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
376 int src_x_offset, int src_y_offset,
377 qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
378 MpegEncContext * const s = &h->s;
379 const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
380 int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
381 const int luma_xy= (mx&3) + ((my&3)<<2);
382 uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
383 uint8_t * src_cb, * src_cr;
384 int extra_width= h->emu_edge_width;
385 int extra_height= h->emu_edge_height;
387 const int full_mx= mx>>2;
388 const int full_my= my>>2;
389 const int pic_width = 16*s->mb_width;
390 const int pic_height = 16*s->mb_height >> MB_FIELD;
392 if(mx&7) extra_width -= 3;
393 if(my&7) extra_height -= 3;
395 if( full_mx < 0-extra_width
396 || full_my < 0-extra_height
397 || full_mx + 16/*FIXME*/ > pic_width + extra_width
398 || full_my + 16/*FIXME*/ > pic_height + extra_height){
399 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);
400 src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
404 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
406 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
409 if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
412 // chroma offset when predicting from a field of opposite parity
413 my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
414 emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
416 src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
417 src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
420 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);
421 src_cb= s->edge_emu_buffer;
423 chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
426 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);
427 src_cr= s->edge_emu_buffer;
429 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
432 static inline void mc_part_std(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 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
437 int list0, int list1){
438 MpegEncContext * const s = &h->s;
439 qpel_mc_func *qpix_op= qpix_put;
440 h264_chroma_mc_func chroma_op= chroma_put;
442 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
443 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
444 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
445 x_offset += 8*s->mb_x;
446 y_offset += 8*(s->mb_y >> MB_FIELD);
449 Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
450 mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
451 dest_y, dest_cb, dest_cr, x_offset, y_offset,
455 chroma_op= chroma_avg;
459 Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
460 mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
461 dest_y, dest_cb, dest_cr, x_offset, y_offset,
466 static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
467 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
468 int x_offset, int y_offset,
469 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
470 h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
471 h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
472 int list0, int list1){
473 MpegEncContext * const s = &h->s;
475 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
476 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
477 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
478 x_offset += 8*s->mb_x;
479 y_offset += 8*(s->mb_y >> MB_FIELD);
482 /* don't optimize for luma-only case, since B-frames usually
483 * use implicit weights => chroma too. */
484 uint8_t *tmp_cb = s->obmc_scratchpad;
485 uint8_t *tmp_cr = s->obmc_scratchpad + 8;
486 uint8_t *tmp_y = s->obmc_scratchpad + 8*h->mb_uvlinesize;
487 int refn0 = h->ref_cache[0][ scan8[n] ];
488 int refn1 = h->ref_cache[1][ scan8[n] ];
490 mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
491 dest_y, dest_cb, dest_cr,
492 x_offset, y_offset, qpix_put, chroma_put);
493 mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
494 tmp_y, tmp_cb, tmp_cr,
495 x_offset, y_offset, qpix_put, chroma_put);
497 if(h->use_weight == 2){
498 int weight0 = h->implicit_weight[refn0][refn1][s->mb_y&1];
499 int weight1 = 64 - weight0;
500 luma_weight_avg( dest_y, tmp_y, h-> mb_linesize, 5, weight0, weight1, 0);
501 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
502 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
504 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
505 h->luma_weight[refn0][0][0] , h->luma_weight[refn1][1][0],
506 h->luma_weight[refn0][0][1] + h->luma_weight[refn1][1][1]);
507 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
508 h->chroma_weight[refn0][0][0][0] , h->chroma_weight[refn1][1][0][0],
509 h->chroma_weight[refn0][0][0][1] + h->chroma_weight[refn1][1][0][1]);
510 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
511 h->chroma_weight[refn0][0][1][0] , h->chroma_weight[refn1][1][1][0],
512 h->chroma_weight[refn0][0][1][1] + h->chroma_weight[refn1][1][1][1]);
515 int list = list1 ? 1 : 0;
516 int refn = h->ref_cache[list][ scan8[n] ];
517 Picture *ref= &h->ref_list[list][refn];
518 mc_dir_part(h, ref, n, square, chroma_height, delta, list,
519 dest_y, dest_cb, dest_cr, x_offset, y_offset,
520 qpix_put, chroma_put);
522 luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
523 h->luma_weight[refn][list][0], h->luma_weight[refn][list][1]);
524 if(h->use_weight_chroma){
525 chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
526 h->chroma_weight[refn][list][0][0], h->chroma_weight[refn][list][0][1]);
527 chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
528 h->chroma_weight[refn][list][1][0], h->chroma_weight[refn][list][1][1]);
533 static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
534 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
535 int x_offset, int y_offset,
536 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
537 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
538 h264_weight_func *weight_op, h264_biweight_func *weight_avg,
539 int list0, int list1){
540 if((h->use_weight==2 && list0 && list1
541 && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ][h->s.mb_y&1] != 32))
543 mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
544 x_offset, y_offset, qpix_put, chroma_put,
545 weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
547 mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
548 x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
551 static inline void prefetch_motion(H264Context *h, int list){
552 /* fetch pixels for estimated mv 4 macroblocks ahead
553 * optimized for 64byte cache lines */
554 MpegEncContext * const s = &h->s;
555 const int refn = h->ref_cache[list][scan8[0]];
557 const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
558 const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
559 uint8_t **src= h->ref_list[list][refn].data;
560 int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
561 s->dsp.prefetch(src[0]+off, s->linesize, 4);
562 off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
563 s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
567 static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
568 qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
569 qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
570 h264_weight_func *weight_op, h264_biweight_func *weight_avg){
571 MpegEncContext * const s = &h->s;
572 const int mb_xy= h->mb_xy;
573 const int mb_type= s->current_picture.mb_type[mb_xy];
575 assert(IS_INTER(mb_type));
577 prefetch_motion(h, 0);
579 if(IS_16X16(mb_type)){
580 mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
581 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
582 weight_op, weight_avg,
583 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
584 }else if(IS_16X8(mb_type)){
585 mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
586 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
587 &weight_op[1], &weight_avg[1],
588 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
589 mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
590 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
591 &weight_op[1], &weight_avg[1],
592 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
593 }else if(IS_8X16(mb_type)){
594 mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
595 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
596 &weight_op[2], &weight_avg[2],
597 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
598 mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
599 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
600 &weight_op[2], &weight_avg[2],
601 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
605 assert(IS_8X8(mb_type));
608 const int sub_mb_type= h->sub_mb_type[i];
610 int x_offset= (i&1)<<2;
611 int y_offset= (i&2)<<1;
613 if(IS_SUB_8X8(sub_mb_type)){
614 mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
615 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
616 &weight_op[3], &weight_avg[3],
617 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
618 }else if(IS_SUB_8X4(sub_mb_type)){
619 mc_part(h, n , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
620 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
621 &weight_op[4], &weight_avg[4],
622 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
623 mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
624 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
625 &weight_op[4], &weight_avg[4],
626 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
627 }else if(IS_SUB_4X8(sub_mb_type)){
628 mc_part(h, n , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
629 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
630 &weight_op[5], &weight_avg[5],
631 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
632 mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
633 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
634 &weight_op[5], &weight_avg[5],
635 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
638 assert(IS_SUB_4X4(sub_mb_type));
640 int sub_x_offset= x_offset + 2*(j&1);
641 int sub_y_offset= y_offset + (j&2);
642 mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
643 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
644 &weight_op[6], &weight_avg[6],
645 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
651 prefetch_motion(h, 1);
655 static void free_tables(H264Context *h){
658 av_freep(&h->intra4x4_pred_mode);
659 av_freep(&h->chroma_pred_mode_table);
660 av_freep(&h->cbp_table);
661 av_freep(&h->mvd_table[0]);
662 av_freep(&h->mvd_table[1]);
663 av_freep(&h->direct_table);
664 av_freep(&h->non_zero_count);
665 av_freep(&h->slice_table_base);
666 h->slice_table= NULL;
667 av_freep(&h->list_counts);
669 av_freep(&h->mb2b_xy);
670 av_freep(&h->mb2br_xy);
672 for(i = 0; i < MAX_THREADS; i++) {
673 hx = h->thread_context[i];
675 av_freep(&hx->top_borders[1]);
676 av_freep(&hx->top_borders[0]);
677 av_freep(&hx->s.obmc_scratchpad);
678 av_freep(&hx->rbsp_buffer[1]);
679 av_freep(&hx->rbsp_buffer[0]);
680 hx->rbsp_buffer_size[0] = 0;
681 hx->rbsp_buffer_size[1] = 0;
682 if (i) av_freep(&h->thread_context[i]);
686 static void init_dequant8_coeff_table(H264Context *h){
688 const int transpose = (h->h264dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
689 h->dequant8_coeff[0] = h->dequant8_buffer[0];
690 h->dequant8_coeff[1] = h->dequant8_buffer[1];
693 if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
694 h->dequant8_coeff[1] = h->dequant8_buffer[0];
702 h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
703 ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
704 h->pps.scaling_matrix8[i][x]) << shift;
709 static void init_dequant4_coeff_table(H264Context *h){
711 const int transpose = (h->h264dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
713 h->dequant4_coeff[i] = h->dequant4_buffer[i];
715 if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
716 h->dequant4_coeff[i] = h->dequant4_buffer[j];
724 int shift = div6[q] + 2;
727 h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
728 ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
729 h->pps.scaling_matrix4[i][x]) << shift;
734 static void init_dequant_tables(H264Context *h){
736 init_dequant4_coeff_table(h);
737 if(h->pps.transform_8x8_mode)
738 init_dequant8_coeff_table(h);
739 if(h->sps.transform_bypass){
742 h->dequant4_coeff[i][0][x] = 1<<6;
743 if(h->pps.transform_8x8_mode)
746 h->dequant8_coeff[i][0][x] = 1<<6;
751 int ff_h264_alloc_tables(H264Context *h){
752 MpegEncContext * const s = &h->s;
753 const int big_mb_num= s->mb_stride * (s->mb_height+1);
754 const int row_mb_num= 2*s->mb_stride*s->avctx->thread_count;
757 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, row_mb_num * 8 * sizeof(uint8_t), fail)
759 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count , big_mb_num * 32 * sizeof(uint8_t), fail)
760 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail)
761 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail)
763 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail)
764 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 16*row_mb_num * sizeof(uint8_t), fail);
765 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 16*row_mb_num * sizeof(uint8_t), fail);
766 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 4*big_mb_num * sizeof(uint8_t) , fail);
767 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts, big_mb_num * sizeof(uint8_t), fail)
769 memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base));
770 h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
772 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy , big_mb_num * sizeof(uint32_t), fail);
773 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2br_xy , big_mb_num * sizeof(uint32_t), fail);
774 for(y=0; y<s->mb_height; y++){
775 for(x=0; x<s->mb_width; x++){
776 const int mb_xy= x + y*s->mb_stride;
777 const int b_xy = 4*x + 4*y*h->b_stride;
779 h->mb2b_xy [mb_xy]= b_xy;
780 h->mb2br_xy[mb_xy]= 8*(FMO ? mb_xy : (mb_xy % (2*s->mb_stride)));
784 s->obmc_scratchpad = NULL;
786 if(!h->dequant4_coeff[0])
787 init_dequant_tables(h);
796 * Mimic alloc_tables(), but for every context thread.
798 static void clone_tables(H264Context *dst, H264Context *src, int i){
799 MpegEncContext * const s = &src->s;
800 dst->intra4x4_pred_mode = src->intra4x4_pred_mode + i*8*2*s->mb_stride;
801 dst->non_zero_count = src->non_zero_count;
802 dst->slice_table = src->slice_table;
803 dst->cbp_table = src->cbp_table;
804 dst->mb2b_xy = src->mb2b_xy;
805 dst->mb2br_xy = src->mb2br_xy;
806 dst->chroma_pred_mode_table = src->chroma_pred_mode_table;
807 dst->mvd_table[0] = src->mvd_table[0] + i*8*2*s->mb_stride;
808 dst->mvd_table[1] = src->mvd_table[1] + i*8*2*s->mb_stride;
809 dst->direct_table = src->direct_table;
810 dst->list_counts = src->list_counts;
812 dst->s.obmc_scratchpad = NULL;
813 ff_h264_pred_init(&dst->hpc, src->s.codec_id);
818 * Allocate buffers which are not shared amongst multiple threads.
820 static int context_init(H264Context *h){
821 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
822 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
824 h->ref_cache[0][scan8[5 ]+1] = h->ref_cache[0][scan8[7 ]+1] = h->ref_cache[0][scan8[13]+1] =
825 h->ref_cache[1][scan8[5 ]+1] = h->ref_cache[1][scan8[7 ]+1] = h->ref_cache[1][scan8[13]+1] = PART_NOT_AVAILABLE;
829 return -1; // free_tables will clean up for us
832 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size);
834 static av_cold void common_init(H264Context *h){
835 MpegEncContext * const s = &h->s;
837 s->width = s->avctx->width;
838 s->height = s->avctx->height;
839 s->codec_id= s->avctx->codec->id;
841 ff_h264dsp_init(&h->h264dsp);
842 ff_h264_pred_init(&h->hpc, s->codec_id);
844 h->dequant_coeff_pps= -1;
845 s->unrestricted_mv=1;
848 dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
850 memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
851 memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
854 int ff_h264_decode_extradata(H264Context *h)
856 AVCodecContext *avctx = h->s.avctx;
858 if(*(char *)avctx->extradata == 1){
860 unsigned char *p = avctx->extradata;
864 if(avctx->extradata_size < 7) {
865 av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
868 /* sps and pps in the avcC always have length coded with 2 bytes,
869 so put a fake nal_length_size = 2 while parsing them */
870 h->nal_length_size = 2;
871 // Decode sps from avcC
872 cnt = *(p+5) & 0x1f; // Number of sps
874 for (i = 0; i < cnt; i++) {
875 nalsize = AV_RB16(p) + 2;
876 if(decode_nal_units(h, p, nalsize) < 0) {
877 av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
882 // Decode pps from avcC
883 cnt = *(p++); // Number of pps
884 for (i = 0; i < cnt; i++) {
885 nalsize = AV_RB16(p) + 2;
886 if(decode_nal_units(h, p, nalsize) != nalsize) {
887 av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
892 // Now store right nal length size, that will be use to parse all other nals
893 h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
896 if(decode_nal_units(h, avctx->extradata, avctx->extradata_size) < 0)
902 av_cold int ff_h264_decode_init(AVCodecContext *avctx){
903 H264Context *h= avctx->priv_data;
904 MpegEncContext * const s = &h->s;
906 MPV_decode_defaults(s);
911 s->out_format = FMT_H264;
912 s->workaround_bugs= avctx->workaround_bugs;
915 // s->decode_mb= ff_h263_decode_mb;
916 s->quarter_sample = 1;
917 if(!avctx->has_b_frames)
920 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
922 ff_h264_decode_init_vlc();
924 h->thread_context[0] = h;
925 h->outputed_poc = INT_MIN;
926 h->prev_poc_msb= 1<<16;
928 ff_h264_reset_sei(h);
929 if(avctx->codec_id == CODEC_ID_H264){
930 if(avctx->ticks_per_frame == 1){
931 s->avctx->time_base.den *=2;
933 avctx->ticks_per_frame = 2;
936 if(avctx->extradata_size > 0 && avctx->extradata &&
937 ff_h264_decode_extradata(h))
940 if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames < h->sps.num_reorder_frames){
941 s->avctx->has_b_frames = h->sps.num_reorder_frames;
948 int ff_h264_frame_start(H264Context *h){
949 MpegEncContext * const s = &h->s;
952 if(MPV_frame_start(s, s->avctx) < 0)
954 ff_er_frame_start(s);
956 * MPV_frame_start uses pict_type to derive key_frame.
957 * This is incorrect for H.264; IDR markings must be used.
958 * Zero here; IDR markings per slice in frame or fields are ORed in later.
959 * See decode_nal_units().
961 s->current_picture_ptr->key_frame= 0;
962 s->current_picture_ptr->mmco_reset= 0;
964 assert(s->linesize && s->uvlinesize);
967 h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
968 h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
971 h->block_offset[16+i]=
972 h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
973 h->block_offset[24+16+i]=
974 h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
977 /* can't be in alloc_tables because linesize isn't known there.
978 * FIXME: redo bipred weight to not require extra buffer? */
979 for(i = 0; i < s->avctx->thread_count; i++)
980 if(!h->thread_context[i]->s.obmc_scratchpad)
981 h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
983 /* some macroblocks can be accessed before they're available in case of lost slices, mbaff or threading*/
984 memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
986 // s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
988 // We mark the current picture as non-reference after allocating it, so
989 // that if we break out due to an error it can be released automatically
990 // in the next MPV_frame_start().
991 // SVQ3 as well as most other codecs have only last/next/current and thus
992 // get released even with set reference, besides SVQ3 and others do not
993 // mark frames as reference later "naturally".
994 if(s->codec_id != CODEC_ID_SVQ3)
995 s->current_picture_ptr->reference= 0;
997 s->current_picture_ptr->field_poc[0]=
998 s->current_picture_ptr->field_poc[1]= INT_MAX;
999 assert(s->current_picture_ptr->long_ref==0);
1004 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){
1005 MpegEncContext * const s = &h->s;
1006 uint8_t *top_border;
1010 src_cb -= uvlinesize;
1011 src_cr -= uvlinesize;
1013 if(!simple && FRAME_MBAFF){
1016 top_border = h->top_borders[0][s->mb_x];
1017 AV_COPY128(top_border, src_y + 15*linesize);
1018 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1019 AV_COPY64(top_border+16, src_cb+7*uvlinesize);
1020 AV_COPY64(top_border+24, src_cr+7*uvlinesize);
1029 top_border = h->top_borders[top_idx][s->mb_x];
1030 // There are two lines saved, the line above the the top macroblock of a pair,
1031 // and the line above the bottom macroblock
1032 AV_COPY128(top_border, src_y + 16*linesize);
1034 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1035 AV_COPY64(top_border+16, src_cb+8*uvlinesize);
1036 AV_COPY64(top_border+24, src_cr+8*uvlinesize);
1040 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){
1041 MpegEncContext * const s = &h->s;
1045 uint8_t *top_border_m1;
1046 uint8_t *top_border;
1048 if(!simple && FRAME_MBAFF){
1053 top_idx = MB_MBAFF ? 0 : 1;
1057 if(h->deblocking_filter == 2) {
1058 deblock_left = h->left_type[0];
1059 deblock_top = h->top_type;
1061 deblock_left = (s->mb_x > 0);
1062 deblock_top = (s->mb_y > !!MB_FIELD);
1065 src_y -= linesize + 1;
1066 src_cb -= uvlinesize + 1;
1067 src_cr -= uvlinesize + 1;
1069 top_border_m1 = h->top_borders[top_idx][s->mb_x-1];
1070 top_border = h->top_borders[top_idx][s->mb_x];
1072 #define XCHG(a,b,xchg)\
1073 if (xchg) AV_SWAP64(b,a);\
1074 else AV_COPY64(b,a);
1078 XCHG(top_border_m1+8, src_y -7, 1);
1080 XCHG(top_border+0, src_y +1, xchg);
1081 XCHG(top_border+8, src_y +9, 1);
1082 if(s->mb_x+1 < s->mb_width){
1083 XCHG(h->top_borders[top_idx][s->mb_x+1], src_y +17, 1);
1087 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1090 XCHG(top_border_m1+16, src_cb -7, 1);
1091 XCHG(top_border_m1+24, src_cr -7, 1);
1093 XCHG(top_border+16, src_cb+1, 1);
1094 XCHG(top_border+24, src_cr+1, 1);
1099 static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
1100 MpegEncContext * const s = &h->s;
1101 const int mb_x= s->mb_x;
1102 const int mb_y= s->mb_y;
1103 const int mb_xy= h->mb_xy;
1104 const int mb_type= s->current_picture.mb_type[mb_xy];
1105 uint8_t *dest_y, *dest_cb, *dest_cr;
1106 int linesize, uvlinesize /*dct_offset*/;
1108 int *block_offset = &h->block_offset[0];
1109 const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
1110 /* is_h264 should always be true if SVQ3 is disabled. */
1111 const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
1112 void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1113 void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1115 dest_y = s->current_picture.data[0] + (mb_x + mb_y * s->linesize ) * 16;
1116 dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
1117 dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
1119 s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
1120 s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
1122 h->list_counts[mb_xy]= h->list_count;
1124 if (!simple && MB_FIELD) {
1125 linesize = h->mb_linesize = s->linesize * 2;
1126 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
1127 block_offset = &h->block_offset[24];
1128 if(mb_y&1){ //FIXME move out of this function?
1129 dest_y -= s->linesize*15;
1130 dest_cb-= s->uvlinesize*7;
1131 dest_cr-= s->uvlinesize*7;
1135 for(list=0; list<h->list_count; list++){
1136 if(!USES_LIST(mb_type, list))
1138 if(IS_16X16(mb_type)){
1139 int8_t *ref = &h->ref_cache[list][scan8[0]];
1140 fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
1142 for(i=0; i<16; i+=4){
1143 int ref = h->ref_cache[list][scan8[i]];
1145 fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
1151 linesize = h->mb_linesize = s->linesize;
1152 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
1153 // dct_offset = s->linesize * 16;
1156 if (!simple && IS_INTRA_PCM(mb_type)) {
1157 for (i=0; i<16; i++) {
1158 memcpy(dest_y + i* linesize, h->mb + i*8, 16);
1160 for (i=0; i<8; i++) {
1161 memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4, 8);
1162 memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4, 8);
1165 if(IS_INTRA(mb_type)){
1166 if(h->deblocking_filter)
1167 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
1169 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1170 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
1171 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
1174 if(IS_INTRA4x4(mb_type)){
1175 if(simple || !s->encoding){
1176 if(IS_8x8DCT(mb_type)){
1177 if(transform_bypass){
1179 idct_add = s->dsp.add_pixels8;
1181 idct_dc_add = h->h264dsp.h264_idct8_dc_add;
1182 idct_add = h->h264dsp.h264_idct8_add;
1184 for(i=0; i<16; i+=4){
1185 uint8_t * const ptr= dest_y + block_offset[i];
1186 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1187 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1188 h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
1190 const int nnz = h->non_zero_count_cache[ scan8[i] ];
1191 h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
1192 (h->topright_samples_available<<i)&0x4000, linesize);
1194 if(nnz == 1 && h->mb[i*16])
1195 idct_dc_add(ptr, h->mb + i*16, linesize);
1197 idct_add (ptr, h->mb + i*16, linesize);
1202 if(transform_bypass){
1204 idct_add = s->dsp.add_pixels4;
1206 idct_dc_add = h->h264dsp.h264_idct_dc_add;
1207 idct_add = h->h264dsp.h264_idct_add;
1209 for(i=0; i<16; i++){
1210 uint8_t * const ptr= dest_y + block_offset[i];
1211 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1213 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1214 h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
1218 if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
1219 const int topright_avail= (h->topright_samples_available<<i)&0x8000;
1220 assert(mb_y || linesize <= block_offset[i]);
1221 if(!topright_avail){
1222 tr= ptr[3 - linesize]*0x01010101;
1223 topright= (uint8_t*) &tr;
1225 topright= ptr + 4 - linesize;
1229 h->hpc.pred4x4[ dir ](ptr, topright, linesize);
1230 nnz = h->non_zero_count_cache[ scan8[i] ];
1233 if(nnz == 1 && h->mb[i*16])
1234 idct_dc_add(ptr, h->mb + i*16, linesize);
1236 idct_add (ptr, h->mb + i*16, linesize);
1238 ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
1245 h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
1247 if(!transform_bypass)
1248 h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
1250 ff_svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
1252 if(h->deblocking_filter)
1253 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
1255 hl_motion(h, dest_y, dest_cb, dest_cr,
1256 s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1257 s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1258 h->h264dsp.weight_h264_pixels_tab, h->h264dsp.biweight_h264_pixels_tab);
1262 if(!IS_INTRA4x4(mb_type)){
1264 if(IS_INTRA16x16(mb_type)){
1265 if(transform_bypass){
1266 if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
1267 h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
1269 for(i=0; i<16; i++){
1270 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1271 s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
1275 h->h264dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1277 }else if(h->cbp&15){
1278 if(transform_bypass){
1279 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1280 idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
1281 for(i=0; i<16; i+=di){
1282 if(h->non_zero_count_cache[ scan8[i] ]){
1283 idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
1287 if(IS_8x8DCT(mb_type)){
1288 h->h264dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1290 h->h264dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1295 for(i=0; i<16; i++){
1296 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
1297 uint8_t * const ptr= dest_y + block_offset[i];
1298 ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1304 if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
1305 uint8_t *dest[2] = {dest_cb, dest_cr};
1306 if(transform_bypass){
1307 if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
1308 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
1309 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
1311 idct_add = s->dsp.add_pixels4;
1312 for(i=16; i<16+8; i++){
1313 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1314 idct_add (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1318 chroma_dc_dequant_idct_c(h->mb + 16*16, h->chroma_qp[0], h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
1319 chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp[1], h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]);
1321 idct_add = h->h264dsp.h264_idct_add;
1322 idct_dc_add = h->h264dsp.h264_idct_dc_add;
1323 for(i=16; i<16+8; i++){
1324 if(h->non_zero_count_cache[ scan8[i] ])
1325 idct_add (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1326 else if(h->mb[i*16])
1327 idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1330 for(i=16; i<16+8; i++){
1331 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
1332 uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
1333 ff_svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[s->qscale + 12] - 12, 2);
1340 if(h->cbp || IS_INTRA(mb_type))
1341 s->dsp.clear_blocks(h->mb);
1345 * Process a macroblock; this case avoids checks for expensive uncommon cases.
1347 static void hl_decode_mb_simple(H264Context *h){
1348 hl_decode_mb_internal(h, 1);
1352 * Process a macroblock; this handles edge cases, such as interlacing.
1354 static void av_noinline hl_decode_mb_complex(H264Context *h){
1355 hl_decode_mb_internal(h, 0);
1358 void ff_h264_hl_decode_mb(H264Context *h){
1359 MpegEncContext * const s = &h->s;
1360 const int mb_xy= h->mb_xy;
1361 const int mb_type= s->current_picture.mb_type[mb_xy];
1362 int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1365 hl_decode_mb_complex(h);
1366 else hl_decode_mb_simple(h);
1369 static int pred_weight_table(H264Context *h){
1370 MpegEncContext * const s = &h->s;
1372 int luma_def, chroma_def;
1375 h->use_weight_chroma= 0;
1376 h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
1377 h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
1378 luma_def = 1<<h->luma_log2_weight_denom;
1379 chroma_def = 1<<h->chroma_log2_weight_denom;
1381 for(list=0; list<2; list++){
1382 h->luma_weight_flag[list] = 0;
1383 h->chroma_weight_flag[list] = 0;
1384 for(i=0; i<h->ref_count[list]; i++){
1385 int luma_weight_flag, chroma_weight_flag;
1387 luma_weight_flag= get_bits1(&s->gb);
1388 if(luma_weight_flag){
1389 h->luma_weight[i][list][0]= get_se_golomb(&s->gb);
1390 h->luma_weight[i][list][1]= get_se_golomb(&s->gb);
1391 if( h->luma_weight[i][list][0] != luma_def
1392 || h->luma_weight[i][list][1] != 0) {
1394 h->luma_weight_flag[list]= 1;
1397 h->luma_weight[i][list][0]= luma_def;
1398 h->luma_weight[i][list][1]= 0;
1402 chroma_weight_flag= get_bits1(&s->gb);
1403 if(chroma_weight_flag){
1406 h->chroma_weight[i][list][j][0]= get_se_golomb(&s->gb);
1407 h->chroma_weight[i][list][j][1]= get_se_golomb(&s->gb);
1408 if( h->chroma_weight[i][list][j][0] != chroma_def
1409 || h->chroma_weight[i][list][j][1] != 0) {
1410 h->use_weight_chroma= 1;
1411 h->chroma_weight_flag[list]= 1;
1417 h->chroma_weight[i][list][j][0]= chroma_def;
1418 h->chroma_weight[i][list][j][1]= 0;
1423 if(h->slice_type_nos != FF_B_TYPE) break;
1425 h->use_weight= h->use_weight || h->use_weight_chroma;
1430 * Initialize implicit_weight table.
1431 * @param field 0/1 initialize the weight for interlaced MBAFF
1432 * -1 initializes the rest
1434 static void implicit_weight_table(H264Context *h, int field){
1435 MpegEncContext * const s = &h->s;
1436 int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
1438 for (i = 0; i < 2; i++) {
1439 h->luma_weight_flag[i] = 0;
1440 h->chroma_weight_flag[i] = 0;
1444 cur_poc = s->current_picture_ptr->poc;
1445 if( h->ref_count[0] == 1 && h->ref_count[1] == 1 && !FRAME_MBAFF
1446 && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
1448 h->use_weight_chroma= 0;
1452 ref_count0= h->ref_count[0];
1453 ref_count1= h->ref_count[1];
1455 cur_poc = s->current_picture_ptr->field_poc[field];
1457 ref_count0= 16+2*h->ref_count[0];
1458 ref_count1= 16+2*h->ref_count[1];
1462 h->use_weight_chroma= 2;
1463 h->luma_log2_weight_denom= 5;
1464 h->chroma_log2_weight_denom= 5;
1466 for(ref0=ref_start; ref0 < ref_count0; ref0++){
1467 int poc0 = h->ref_list[0][ref0].poc;
1468 for(ref1=ref_start; ref1 < ref_count1; ref1++){
1469 int poc1 = h->ref_list[1][ref1].poc;
1470 int td = av_clip(poc1 - poc0, -128, 127);
1473 int tb = av_clip(cur_poc - poc0, -128, 127);
1474 int tx = (16384 + (FFABS(td) >> 1)) / td;
1475 int dist_scale_factor = (tb*tx + 32) >> 8;
1476 if(dist_scale_factor >= -64 && dist_scale_factor <= 128)
1477 w = 64 - dist_scale_factor;
1480 h->implicit_weight[ref0][ref1][0]=
1481 h->implicit_weight[ref0][ref1][1]= w;
1483 h->implicit_weight[ref0][ref1][field]=w;
1490 * instantaneous decoder refresh.
1492 static void idr(H264Context *h){
1493 ff_h264_remove_all_refs(h);
1494 h->prev_frame_num= 0;
1495 h->prev_frame_num_offset= 0;
1500 /* forget old pics after a seek */
1501 static void flush_dpb(AVCodecContext *avctx){
1502 H264Context *h= avctx->priv_data;
1504 for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
1505 if(h->delayed_pic[i])
1506 h->delayed_pic[i]->reference= 0;
1507 h->delayed_pic[i]= NULL;
1509 h->outputed_poc= INT_MIN;
1510 h->prev_interlaced_frame = 1;
1512 if(h->s.current_picture_ptr)
1513 h->s.current_picture_ptr->reference= 0;
1514 h->s.first_field= 0;
1515 ff_h264_reset_sei(h);
1516 ff_mpeg_flush(avctx);
1519 static int init_poc(H264Context *h){
1520 MpegEncContext * const s = &h->s;
1521 const int max_frame_num= 1<<h->sps.log2_max_frame_num;
1523 Picture *cur = s->current_picture_ptr;
1525 h->frame_num_offset= h->prev_frame_num_offset;
1526 if(h->frame_num < h->prev_frame_num)
1527 h->frame_num_offset += max_frame_num;
1529 if(h->sps.poc_type==0){
1530 const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
1532 if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
1533 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
1534 else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
1535 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
1537 h->poc_msb = h->prev_poc_msb;
1538 //printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
1540 field_poc[1] = h->poc_msb + h->poc_lsb;
1541 if(s->picture_structure == PICT_FRAME)
1542 field_poc[1] += h->delta_poc_bottom;
1543 }else if(h->sps.poc_type==1){
1544 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
1547 if(h->sps.poc_cycle_length != 0)
1548 abs_frame_num = h->frame_num_offset + h->frame_num;
1552 if(h->nal_ref_idc==0 && abs_frame_num > 0)
1555 expected_delta_per_poc_cycle = 0;
1556 for(i=0; i < h->sps.poc_cycle_length; i++)
1557 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
1559 if(abs_frame_num > 0){
1560 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
1561 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
1563 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
1564 for(i = 0; i <= frame_num_in_poc_cycle; i++)
1565 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
1569 if(h->nal_ref_idc == 0)
1570 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
1572 field_poc[0] = expectedpoc + h->delta_poc[0];
1573 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
1575 if(s->picture_structure == PICT_FRAME)
1576 field_poc[1] += h->delta_poc[1];
1578 int poc= 2*(h->frame_num_offset + h->frame_num);
1587 if(s->picture_structure != PICT_BOTTOM_FIELD)
1588 s->current_picture_ptr->field_poc[0]= field_poc[0];
1589 if(s->picture_structure != PICT_TOP_FIELD)
1590 s->current_picture_ptr->field_poc[1]= field_poc[1];
1591 cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
1598 * initialize scan tables
1600 static void init_scan_tables(H264Context *h){
1602 if(h->h264dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
1603 memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
1604 memcpy(h-> field_scan, field_scan, 16*sizeof(uint8_t));
1606 for(i=0; i<16; i++){
1607 #define T(x) (x>>2) | ((x<<2) & 0xF)
1608 h->zigzag_scan[i] = T(zigzag_scan[i]);
1609 h-> field_scan[i] = T( field_scan[i]);
1613 if(h->h264dsp.h264_idct8_add == ff_h264_idct8_add_c){
1614 memcpy(h->zigzag_scan8x8, ff_zigzag_direct, 64*sizeof(uint8_t));
1615 memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
1616 memcpy(h->field_scan8x8, field_scan8x8, 64*sizeof(uint8_t));
1617 memcpy(h->field_scan8x8_cavlc, field_scan8x8_cavlc, 64*sizeof(uint8_t));
1619 for(i=0; i<64; i++){
1620 #define T(x) (x>>3) | ((x&7)<<3)
1621 h->zigzag_scan8x8[i] = T(ff_zigzag_direct[i]);
1622 h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
1623 h->field_scan8x8[i] = T(field_scan8x8[i]);
1624 h->field_scan8x8_cavlc[i] = T(field_scan8x8_cavlc[i]);
1628 if(h->sps.transform_bypass){ //FIXME same ugly
1629 h->zigzag_scan_q0 = zigzag_scan;
1630 h->zigzag_scan8x8_q0 = ff_zigzag_direct;
1631 h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
1632 h->field_scan_q0 = field_scan;
1633 h->field_scan8x8_q0 = field_scan8x8;
1634 h->field_scan8x8_cavlc_q0 = field_scan8x8_cavlc;
1636 h->zigzag_scan_q0 = h->zigzag_scan;
1637 h->zigzag_scan8x8_q0 = h->zigzag_scan8x8;
1638 h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
1639 h->field_scan_q0 = h->field_scan;
1640 h->field_scan8x8_q0 = h->field_scan8x8;
1641 h->field_scan8x8_cavlc_q0 = h->field_scan8x8_cavlc;
1645 static void field_end(H264Context *h){
1646 MpegEncContext * const s = &h->s;
1647 AVCodecContext * const avctx= s->avctx;
1650 s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
1651 s->current_picture_ptr->pict_type= s->pict_type;
1653 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1654 ff_vdpau_h264_set_reference_frames(s);
1657 ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1658 h->prev_poc_msb= h->poc_msb;
1659 h->prev_poc_lsb= h->poc_lsb;
1661 h->prev_frame_num_offset= h->frame_num_offset;
1662 h->prev_frame_num= h->frame_num;
1664 if (avctx->hwaccel) {
1665 if (avctx->hwaccel->end_frame(avctx) < 0)
1666 av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
1669 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1670 ff_vdpau_h264_picture_complete(s);
1673 * FIXME: Error handling code does not seem to support interlaced
1674 * when slices span multiple rows
1675 * The ff_er_add_slice calls don't work right for bottom
1676 * fields; they cause massive erroneous error concealing
1677 * Error marking covers both fields (top and bottom).
1678 * This causes a mismatched s->error_count
1679 * and a bad error table. Further, the error count goes to
1680 * INT_MAX when called for bottom field, because mb_y is
1681 * past end by one (callers fault) and resync_mb_y != 0
1682 * causes problems for the first MB line, too.
1693 * Replicate H264 "master" context to thread contexts.
1695 static void clone_slice(H264Context *dst, H264Context *src)
1697 memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset));
1698 dst->s.current_picture_ptr = src->s.current_picture_ptr;
1699 dst->s.current_picture = src->s.current_picture;
1700 dst->s.linesize = src->s.linesize;
1701 dst->s.uvlinesize = src->s.uvlinesize;
1702 dst->s.first_field = src->s.first_field;
1704 dst->prev_poc_msb = src->prev_poc_msb;
1705 dst->prev_poc_lsb = src->prev_poc_lsb;
1706 dst->prev_frame_num_offset = src->prev_frame_num_offset;
1707 dst->prev_frame_num = src->prev_frame_num;
1708 dst->short_ref_count = src->short_ref_count;
1710 memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref));
1711 memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref));
1712 memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
1713 memcpy(dst->ref_list, src->ref_list, sizeof(dst->ref_list));
1715 memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff));
1716 memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff));
1720 * decodes a slice header.
1721 * This will also call MPV_common_init() and frame_start() as needed.
1723 * @param h h264context
1724 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
1726 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
1728 static int decode_slice_header(H264Context *h, H264Context *h0){
1729 MpegEncContext * const s = &h->s;
1730 MpegEncContext * const s0 = &h0->s;
1731 unsigned int first_mb_in_slice;
1732 unsigned int pps_id;
1733 int num_ref_idx_active_override_flag;
1734 unsigned int slice_type, tmp, i, j;
1735 int default_ref_list_done = 0;
1736 int last_pic_structure;
1738 s->dropable= h->nal_ref_idc == 0;
1740 if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
1741 s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
1742 s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
1744 s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
1745 s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
1748 first_mb_in_slice= get_ue_golomb(&s->gb);
1750 if(first_mb_in_slice == 0){ //FIXME better field boundary detection
1751 if(h0->current_slice && FIELD_PICTURE){
1755 h0->current_slice = 0;
1756 if (!s0->first_field)
1757 s->current_picture_ptr= NULL;
1760 slice_type= get_ue_golomb_31(&s->gb);
1762 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);
1767 h->slice_type_fixed=1;
1769 h->slice_type_fixed=0;
1771 slice_type= golomb_to_pict_type[ slice_type ];
1772 if (slice_type == FF_I_TYPE
1773 || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
1774 default_ref_list_done = 1;
1776 h->slice_type= slice_type;
1777 h->slice_type_nos= slice_type & 3;
1779 s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
1781 pps_id= get_ue_golomb(&s->gb);
1782 if(pps_id>=MAX_PPS_COUNT){
1783 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
1786 if(!h0->pps_buffers[pps_id]) {
1787 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
1790 h->pps= *h0->pps_buffers[pps_id];
1792 if(!h0->sps_buffers[h->pps.sps_id]) {
1793 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
1796 h->sps = *h0->sps_buffers[h->pps.sps_id];
1798 s->avctx->profile = h->sps.profile_idc;
1799 s->avctx->level = h->sps.level_idc;
1800 s->avctx->refs = h->sps.ref_frame_count;
1802 if(h == h0 && h->dequant_coeff_pps != pps_id){
1803 h->dequant_coeff_pps = pps_id;
1804 init_dequant_tables(h);
1807 s->mb_width= h->sps.mb_width;
1808 s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
1810 h->b_stride= s->mb_width*4;
1812 s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
1813 if(h->sps.frame_mbs_only_flag)
1814 s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
1816 s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
1818 if (s->context_initialized
1819 && ( s->width != s->avctx->width || s->height != s->avctx->height
1820 || av_cmp_q(h->sps.sar, s->avctx->sample_aspect_ratio))) {
1822 return -1; // width / height changed during parallelized decoding
1824 flush_dpb(s->avctx);
1827 if (!s->context_initialized) {
1829 return -1; // we cant (re-)initialize context during parallel decoding
1831 avcodec_set_dimensions(s->avctx, s->width, s->height);
1832 s->avctx->sample_aspect_ratio= h->sps.sar;
1833 if(!s->avctx->sample_aspect_ratio.den)
1834 s->avctx->sample_aspect_ratio.den = 1;
1836 if(h->sps.video_signal_type_present_flag){
1837 s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
1838 if(h->sps.colour_description_present_flag){
1839 s->avctx->color_primaries = h->sps.color_primaries;
1840 s->avctx->color_trc = h->sps.color_trc;
1841 s->avctx->colorspace = h->sps.colorspace;
1845 if(h->sps.timing_info_present_flag){
1846 int64_t den= h->sps.time_scale;
1847 if(h->x264_build < 44U)
1849 av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
1850 h->sps.num_units_in_tick, den, 1<<30);
1852 s->avctx->pix_fmt = s->avctx->get_format(s->avctx,
1853 s->avctx->codec->pix_fmts ?
1854 s->avctx->codec->pix_fmts :
1855 s->avctx->color_range == AVCOL_RANGE_JPEG ?
1856 hwaccel_pixfmt_list_h264_jpeg_420 :
1857 ff_hwaccel_pixfmt_list_420);
1858 s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
1860 if (MPV_common_init(s) < 0)
1863 h->prev_interlaced_frame = 1;
1865 init_scan_tables(h);
1866 ff_h264_alloc_tables(h);
1868 for(i = 1; i < s->avctx->thread_count; i++) {
1870 c = h->thread_context[i] = av_malloc(sizeof(H264Context));
1871 memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
1872 memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
1873 c->h264dsp = h->h264dsp;
1876 init_scan_tables(c);
1877 clone_tables(c, h, i);
1880 for(i = 0; i < s->avctx->thread_count; i++)
1881 if(context_init(h->thread_context[i]) < 0)
1885 h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
1888 h->mb_aff_frame = 0;
1889 last_pic_structure = s0->picture_structure;
1890 if(h->sps.frame_mbs_only_flag){
1891 s->picture_structure= PICT_FRAME;
1893 if(get_bits1(&s->gb)) { //field_pic_flag
1894 s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
1896 s->picture_structure= PICT_FRAME;
1897 h->mb_aff_frame = h->sps.mb_aff;
1900 h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
1902 if(h0->current_slice == 0){
1903 while(h->frame_num != h->prev_frame_num &&
1904 h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
1905 av_log(h->s.avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
1906 if (ff_h264_frame_start(h) < 0)
1908 h->prev_frame_num++;
1909 h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
1910 s->current_picture_ptr->frame_num= h->prev_frame_num;
1911 ff_generate_sliding_window_mmcos(h);
1912 ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1915 /* See if we have a decoded first field looking for a pair... */
1916 if (s0->first_field) {
1917 assert(s0->current_picture_ptr);
1918 assert(s0->current_picture_ptr->data[0]);
1919 assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
1921 /* figure out if we have a complementary field pair */
1922 if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
1924 * Previous field is unmatched. Don't display it, but let it
1925 * remain for reference if marked as such.
1927 s0->current_picture_ptr = NULL;
1928 s0->first_field = FIELD_PICTURE;
1931 if (h->nal_ref_idc &&
1932 s0->current_picture_ptr->reference &&
1933 s0->current_picture_ptr->frame_num != h->frame_num) {
1935 * This and previous field were reference, but had
1936 * different frame_nums. Consider this field first in
1937 * pair. Throw away previous field except for reference
1940 s0->first_field = 1;
1941 s0->current_picture_ptr = NULL;
1944 /* Second field in complementary pair */
1945 s0->first_field = 0;
1950 /* Frame or first field in a potentially complementary pair */
1951 assert(!s0->current_picture_ptr);
1952 s0->first_field = FIELD_PICTURE;
1955 if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) {
1956 s0->first_field = 0;
1963 s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
1965 assert(s->mb_num == s->mb_width * s->mb_height);
1966 if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
1967 first_mb_in_slice >= s->mb_num){
1968 av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1971 s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
1972 s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
1973 if (s->picture_structure == PICT_BOTTOM_FIELD)
1974 s->resync_mb_y = s->mb_y = s->mb_y + 1;
1975 assert(s->mb_y < s->mb_height);
1977 if(s->picture_structure==PICT_FRAME){
1978 h->curr_pic_num= h->frame_num;
1979 h->max_pic_num= 1<< h->sps.log2_max_frame_num;
1981 h->curr_pic_num= 2*h->frame_num + 1;
1982 h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
1985 if(h->nal_unit_type == NAL_IDR_SLICE){
1986 get_ue_golomb(&s->gb); /* idr_pic_id */
1989 if(h->sps.poc_type==0){
1990 h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
1992 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
1993 h->delta_poc_bottom= get_se_golomb(&s->gb);
1997 if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
1998 h->delta_poc[0]= get_se_golomb(&s->gb);
2000 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
2001 h->delta_poc[1]= get_se_golomb(&s->gb);
2006 if(h->pps.redundant_pic_cnt_present){
2007 h->redundant_pic_count= get_ue_golomb(&s->gb);
2010 //set defaults, might be overridden a few lines later
2011 h->ref_count[0]= h->pps.ref_count[0];
2012 h->ref_count[1]= h->pps.ref_count[1];
2014 if(h->slice_type_nos != FF_I_TYPE){
2015 if(h->slice_type_nos == FF_B_TYPE){
2016 h->direct_spatial_mv_pred= get_bits1(&s->gb);
2018 num_ref_idx_active_override_flag= get_bits1(&s->gb);
2020 if(num_ref_idx_active_override_flag){
2021 h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
2022 if(h->slice_type_nos==FF_B_TYPE)
2023 h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
2025 if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
2026 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
2027 h->ref_count[0]= h->ref_count[1]= 1;
2031 if(h->slice_type_nos == FF_B_TYPE)
2038 if(!default_ref_list_done){
2039 ff_h264_fill_default_ref_list(h);
2042 if(h->slice_type_nos!=FF_I_TYPE && ff_h264_decode_ref_pic_list_reordering(h) < 0)
2045 if(h->slice_type_nos!=FF_I_TYPE){
2046 s->last_picture_ptr= &h->ref_list[0][0];
2047 ff_copy_picture(&s->last_picture, s->last_picture_ptr);
2049 if(h->slice_type_nos==FF_B_TYPE){
2050 s->next_picture_ptr= &h->ref_list[1][0];
2051 ff_copy_picture(&s->next_picture, s->next_picture_ptr);
2054 if( (h->pps.weighted_pred && h->slice_type_nos == FF_P_TYPE )
2055 || (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
2056 pred_weight_table(h);
2057 else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE){
2058 implicit_weight_table(h, -1);
2061 for (i = 0; i < 2; i++) {
2062 h->luma_weight_flag[i] = 0;
2063 h->chroma_weight_flag[i] = 0;
2068 ff_h264_decode_ref_pic_marking(h0, &s->gb);
2071 ff_h264_fill_mbaff_ref_list(h);
2073 if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE){
2074 implicit_weight_table(h, 0);
2075 implicit_weight_table(h, 1);
2079 if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
2080 ff_h264_direct_dist_scale_factor(h);
2081 ff_h264_direct_ref_list_init(h);
2083 if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
2084 tmp = get_ue_golomb_31(&s->gb);
2086 av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
2089 h->cabac_init_idc= tmp;
2092 h->last_qscale_diff = 0;
2093 tmp = h->pps.init_qp + get_se_golomb(&s->gb);
2095 av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
2099 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2100 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2101 //FIXME qscale / qp ... stuff
2102 if(h->slice_type == FF_SP_TYPE){
2103 get_bits1(&s->gb); /* sp_for_switch_flag */
2105 if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
2106 get_se_golomb(&s->gb); /* slice_qs_delta */
2109 h->deblocking_filter = 1;
2110 h->slice_alpha_c0_offset = 52;
2111 h->slice_beta_offset = 52;
2112 if( h->pps.deblocking_filter_parameters_present ) {
2113 tmp= get_ue_golomb_31(&s->gb);
2115 av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
2118 h->deblocking_filter= tmp;
2119 if(h->deblocking_filter < 2)
2120 h->deblocking_filter^= 1; // 1<->0
2122 if( h->deblocking_filter ) {
2123 h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
2124 h->slice_beta_offset += get_se_golomb(&s->gb) << 1;
2125 if( h->slice_alpha_c0_offset > 104U
2126 || h->slice_beta_offset > 104U){
2127 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);
2133 if( s->avctx->skip_loop_filter >= AVDISCARD_ALL
2134 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
2135 ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR && h->slice_type_nos == FF_B_TYPE)
2136 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2137 h->deblocking_filter= 0;
2139 if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
2140 if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
2141 /* Cheat slightly for speed:
2142 Do not bother to deblock across slices. */
2143 h->deblocking_filter = 2;
2145 h0->max_contexts = 1;
2146 if(!h0->single_decode_warning) {
2147 av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
2148 h0->single_decode_warning = 1;
2151 return 1; // deblocking switched inside frame
2154 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]);
2157 if( h->pps.num_slice_groups > 1 && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
2158 slice_group_change_cycle= get_bits(&s->gb, ?);
2161 h0->last_slice_type = slice_type;
2162 h->slice_num = ++h0->current_slice;
2163 if(h->slice_num >= MAX_SLICES){
2164 av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
2169 int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
2170 for(i=0; i<16; i++){
2172 if(h->ref_list[j][i].data[0]){
2174 uint8_t *base= h->ref_list[j][i].base[0];
2175 for(k=0; k<h->short_ref_count; k++)
2176 if(h->short_ref[k]->base[0] == base){
2180 for(k=0; k<h->long_ref_count; k++)
2181 if(h->long_ref[k] && h->long_ref[k]->base[0] == base){
2182 id_list[i]= h->short_ref_count + k;
2191 ref2frm[i+2]= 4*id_list[i]
2192 +(h->ref_list[j][i].reference&3);
2195 for(i=16; i<48; i++)
2196 ref2frm[i+4]= 4*id_list[(i-16)>>1]
2197 +(h->ref_list[j][i].reference&3);
2200 h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
2201 h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
2203 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
2204 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",
2206 (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
2208 av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
2209 pps_id, h->frame_num,
2210 s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
2211 h->ref_count[0], h->ref_count[1],
2213 h->deblocking_filter, h->slice_alpha_c0_offset/2-26, h->slice_beta_offset/2-26,
2215 h->use_weight==1 && h->use_weight_chroma ? "c" : "",
2216 h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
2223 int ff_h264_get_slice_type(const H264Context *h)
2225 switch (h->slice_type) {
2226 case FF_P_TYPE: return 0;
2227 case FF_B_TYPE: return 1;
2228 case FF_I_TYPE: return 2;
2229 case FF_SP_TYPE: return 3;
2230 case FF_SI_TYPE: return 4;
2237 * @return non zero if the loop filter can be skiped
2239 static int fill_filter_caches(H264Context *h, int mb_type){
2240 MpegEncContext * const s = &h->s;
2241 const int mb_xy= h->mb_xy;
2242 int top_xy, left_xy[2];
2243 int top_type, left_type[2];
2245 top_xy = mb_xy - (s->mb_stride << MB_FIELD);
2247 //FIXME deblocking could skip the intra and nnz parts.
2249 /* Wow, what a mess, why didn't they simplify the interlacing & intra
2250 * stuff, I can't imagine that these complex rules are worth it. */
2252 left_xy[1] = left_xy[0] = mb_xy-1;
2254 const int left_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[mb_xy-1]);
2255 const int curr_mb_field_flag = IS_INTERLACED(mb_type);
2257 if (left_mb_field_flag != curr_mb_field_flag) {
2258 left_xy[0] -= s->mb_stride;
2261 if(curr_mb_field_flag){
2262 top_xy += s->mb_stride & (((s->current_picture.mb_type[top_xy ]>>7)&1)-1);
2264 if (left_mb_field_flag != curr_mb_field_flag) {
2265 left_xy[1] += s->mb_stride;
2270 h->top_mb_xy = top_xy;
2271 h->left_mb_xy[0] = left_xy[0];
2272 h->left_mb_xy[1] = left_xy[1];
2274 //for sufficiently low qp, filtering wouldn't do anything
2275 //this is a conservative estimate: could also check beta_offset and more accurate chroma_qp
2276 int qp_thresh = h->qp_thresh; //FIXME strictly we should store qp_thresh for each mb of a slice
2277 int qp = s->current_picture.qscale_table[mb_xy];
2279 && (left_xy[0]<0 || ((qp + s->current_picture.qscale_table[left_xy[0]] + 1)>>1) <= qp_thresh)
2280 && (top_xy < 0 || ((qp + s->current_picture.qscale_table[top_xy ] + 1)>>1) <= qp_thresh)){
2283 if( (left_xy[0]< 0 || ((qp + s->current_picture.qscale_table[left_xy[1] ] + 1)>>1) <= qp_thresh)
2284 && (top_xy < s->mb_stride || ((qp + s->current_picture.qscale_table[top_xy -s->mb_stride] + 1)>>1) <= qp_thresh))
2289 top_type = s->current_picture.mb_type[top_xy] ;
2290 left_type[0] = s->current_picture.mb_type[left_xy[0]];
2291 left_type[1] = s->current_picture.mb_type[left_xy[1]];
2292 if(h->deblocking_filter == 2){
2293 if(h->slice_table[top_xy ] != h->slice_num) top_type= 0;
2294 if(h->slice_table[left_xy[0] ] != h->slice_num) left_type[0]= left_type[1]= 0;
2296 if(h->slice_table[top_xy ] == 0xFFFF) top_type= 0;
2297 if(h->slice_table[left_xy[0] ] == 0xFFFF) left_type[0]= left_type[1] =0;
2299 h->top_type = top_type ;
2300 h->left_type[0]= left_type[0];
2301 h->left_type[1]= left_type[1];
2303 if(IS_INTRA(mb_type))
2306 AV_COPY64(&h->non_zero_count_cache[0+8*1], &h->non_zero_count[mb_xy][ 0]);
2307 AV_COPY64(&h->non_zero_count_cache[0+8*2], &h->non_zero_count[mb_xy][ 8]);
2308 AV_COPY32(&h->non_zero_count_cache[0+8*5], &h->non_zero_count[mb_xy][16]);
2309 AV_COPY32(&h->non_zero_count_cache[4+8*3], &h->non_zero_count[mb_xy][20]);
2310 AV_COPY64(&h->non_zero_count_cache[0+8*4], &h->non_zero_count[mb_xy][24]);
2312 h->cbp= h->cbp_table[mb_xy];
2316 for(list=0; list<h->list_count; list++){
2319 int16_t (*mv_dst)[2];
2320 int16_t (*mv_src)[2];
2322 if(!USES_LIST(mb_type, list)){
2323 fill_rectangle( h->mv_cache[list][scan8[0]], 4, 4, 8, pack16to32(0,0), 4);
2324 AV_WN32A(&h->ref_cache[list][scan8[ 0]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2325 AV_WN32A(&h->ref_cache[list][scan8[ 2]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2326 AV_WN32A(&h->ref_cache[list][scan8[ 8]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2327 AV_WN32A(&h->ref_cache[list][scan8[10]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2331 ref = &s->current_picture.ref_index[list][4*mb_xy];
2333 int (*ref2frm)[64] = h->ref2frm[ h->slice_num&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2334 AV_WN32A(&h->ref_cache[list][scan8[ 0]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2335 AV_WN32A(&h->ref_cache[list][scan8[ 2]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2337 AV_WN32A(&h->ref_cache[list][scan8[ 8]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2338 AV_WN32A(&h->ref_cache[list][scan8[10]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2341 b_stride = h->b_stride;
2342 mv_dst = &h->mv_cache[list][scan8[0]];
2343 mv_src = &s->current_picture.motion_val[list][4*s->mb_x + 4*s->mb_y*b_stride];
2345 AV_COPY128(mv_dst + 8*y, mv_src + y*b_stride);
2360 //FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
2362 AV_COPY32(&h->non_zero_count_cache[4+8*0], &h->non_zero_count[top_xy][4+3*8]);
2366 h->non_zero_count_cache[3+8*1]= h->non_zero_count[left_xy[0]][7+0*8];
2367 h->non_zero_count_cache[3+8*2]= h->non_zero_count[left_xy[0]][7+1*8];
2368 h->non_zero_count_cache[3+8*3]= h->non_zero_count[left_xy[0]][7+2*8];
2369 h->non_zero_count_cache[3+8*4]= h->non_zero_count[left_xy[0]][7+3*8];
2372 // CAVLC 8x8dct requires NNZ values for residual decoding that differ from what the loop filter needs
2373 if(!CABAC && h->pps.transform_8x8_mode){
2374 if(IS_8x8DCT(top_type)){
2375 h->non_zero_count_cache[4+8*0]=
2376 h->non_zero_count_cache[5+8*0]= h->cbp_table[top_xy] & 4;
2377 h->non_zero_count_cache[6+8*0]=
2378 h->non_zero_count_cache[7+8*0]= h->cbp_table[top_xy] & 8;
2380 if(IS_8x8DCT(left_type[0])){
2381 h->non_zero_count_cache[3+8*1]=
2382 h->non_zero_count_cache[3+8*2]= h->cbp_table[left_xy[0]]&2; //FIXME check MBAFF
2384 if(IS_8x8DCT(left_type[1])){
2385 h->non_zero_count_cache[3+8*3]=
2386 h->non_zero_count_cache[3+8*4]= h->cbp_table[left_xy[1]]&8; //FIXME check MBAFF
2389 if(IS_8x8DCT(mb_type)){
2390 h->non_zero_count_cache[scan8[0 ]]= h->non_zero_count_cache[scan8[1 ]]=
2391 h->non_zero_count_cache[scan8[2 ]]= h->non_zero_count_cache[scan8[3 ]]= h->cbp & 1;
2393 h->non_zero_count_cache[scan8[0+ 4]]= h->non_zero_count_cache[scan8[1+ 4]]=
2394 h->non_zero_count_cache[scan8[2+ 4]]= h->non_zero_count_cache[scan8[3+ 4]]= h->cbp & 2;
2396 h->non_zero_count_cache[scan8[0+ 8]]= h->non_zero_count_cache[scan8[1+ 8]]=
2397 h->non_zero_count_cache[scan8[2+ 8]]= h->non_zero_count_cache[scan8[3+ 8]]= h->cbp & 4;
2399 h->non_zero_count_cache[scan8[0+12]]= h->non_zero_count_cache[scan8[1+12]]=
2400 h->non_zero_count_cache[scan8[2+12]]= h->non_zero_count_cache[scan8[3+12]]= h->cbp & 8;
2404 if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
2406 for(list=0; list<h->list_count; list++){
2407 if(USES_LIST(top_type, list)){
2408 const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
2409 const int b8_xy= 4*top_xy + 2;
2410 int (*ref2frm)[64] = h->ref2frm[ h->slice_table[top_xy]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2411 AV_COPY128(h->mv_cache[list][scan8[0] + 0 - 1*8], s->current_picture.motion_val[list][b_xy + 0]);
2412 h->ref_cache[list][scan8[0] + 0 - 1*8]=
2413 h->ref_cache[list][scan8[0] + 1 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 0]];
2414 h->ref_cache[list][scan8[0] + 2 - 1*8]=
2415 h->ref_cache[list][scan8[0] + 3 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 1]];
2417 AV_ZERO128(h->mv_cache[list][scan8[0] + 0 - 1*8]);
2418 AV_WN32A(&h->ref_cache[list][scan8[0] + 0 - 1*8], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2421 if(!IS_INTERLACED(mb_type^left_type[0])){
2422 if(USES_LIST(left_type[0], list)){
2423 const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
2424 const int b8_xy= 4*left_xy[0] + 1;
2425 int (*ref2frm)[64] = h->ref2frm[ h->slice_table[left_xy[0]]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2426 AV_COPY32(h->mv_cache[list][scan8[0] - 1 + 0 ], s->current_picture.motion_val[list][b_xy + h->b_stride*0]);
2427 AV_COPY32(h->mv_cache[list][scan8[0] - 1 + 8 ], s->current_picture.motion_val[list][b_xy + h->b_stride*1]);
2428 AV_COPY32(h->mv_cache[list][scan8[0] - 1 +16 ], s->current_picture.motion_val[list][b_xy + h->b_stride*2]);
2429 AV_COPY32(h->mv_cache[list][scan8[0] - 1 +24 ], s->current_picture.motion_val[list][b_xy + h->b_stride*3]);
2430 h->ref_cache[list][scan8[0] - 1 + 0 ]=
2431 h->ref_cache[list][scan8[0] - 1 + 8 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 2*0]];
2432 h->ref_cache[list][scan8[0] - 1 +16 ]=
2433 h->ref_cache[list][scan8[0] - 1 +24 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 2*1]];
2435 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 + 0 ]);
2436 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 + 8 ]);
2437 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 +16 ]);
2438 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 +24 ]);
2439 h->ref_cache[list][scan8[0] - 1 + 0 ]=
2440 h->ref_cache[list][scan8[0] - 1 + 8 ]=
2441 h->ref_cache[list][scan8[0] - 1 + 16 ]=
2442 h->ref_cache[list][scan8[0] - 1 + 24 ]= LIST_NOT_USED;
2451 static void loop_filter(H264Context *h){
2452 MpegEncContext * const s = &h->s;
2453 uint8_t *dest_y, *dest_cb, *dest_cr;
2454 int linesize, uvlinesize, mb_x, mb_y;
2455 const int end_mb_y= s->mb_y + FRAME_MBAFF;
2456 const int old_slice_type= h->slice_type;
2458 if(h->deblocking_filter) {
2459 for(mb_x= 0; mb_x<s->mb_width; mb_x++){
2460 for(mb_y=end_mb_y - FRAME_MBAFF; mb_y<= end_mb_y; mb_y++){
2462 mb_xy = h->mb_xy = mb_x + mb_y*s->mb_stride;
2463 h->slice_num= h->slice_table[mb_xy];
2464 mb_type= s->current_picture.mb_type[mb_xy];
2465 h->list_count= h->list_counts[mb_xy];
2468 h->mb_mbaff = h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2472 dest_y = s->current_picture.data[0] + (mb_x + mb_y * s->linesize ) * 16;
2473 dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
2474 dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
2475 //FIXME simplify above
2478 linesize = h->mb_linesize = s->linesize * 2;
2479 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2480 if(mb_y&1){ //FIXME move out of this function?
2481 dest_y -= s->linesize*15;
2482 dest_cb-= s->uvlinesize*7;
2483 dest_cr-= s->uvlinesize*7;
2486 linesize = h->mb_linesize = s->linesize;
2487 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2489 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0);
2490 if(fill_filter_caches(h, mb_type))
2492 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2493 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2496 ff_h264_filter_mb (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2498 ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2503 h->slice_type= old_slice_type;
2505 s->mb_y= end_mb_y - FRAME_MBAFF;
2506 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2507 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2510 static void predict_field_decoding_flag(H264Context *h){
2511 MpegEncContext * const s = &h->s;
2512 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2513 int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
2514 ? s->current_picture.mb_type[mb_xy-1]
2515 : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
2516 ? s->current_picture.mb_type[mb_xy-s->mb_stride]
2518 h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2521 static int decode_slice(struct AVCodecContext *avctx, void *arg){
2522 H264Context *h = *(void**)arg;
2523 MpegEncContext * const s = &h->s;
2524 const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
2528 h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
2529 (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
2531 if( h->pps.cabac ) {
2533 align_get_bits( &s->gb );
2536 ff_init_cabac_states( &h->cabac);
2537 ff_init_cabac_decoder( &h->cabac,
2538 s->gb.buffer + get_bits_count(&s->gb)/8,
2539 (get_bits_left(&s->gb) + 7)/8);
2541 ff_h264_init_cabac_states(h);
2545 int ret = ff_h264_decode_mb_cabac(h);
2547 //STOP_TIMER("decode_mb_cabac")
2549 if(ret>=0) ff_h264_hl_decode_mb(h);
2551 if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
2554 ret = ff_h264_decode_mb_cabac(h);
2556 if(ret>=0) ff_h264_hl_decode_mb(h);
2559 eos = get_cabac_terminate( &h->cabac );
2561 if((s->workaround_bugs & FF_BUG_TRUNCATED) && h->cabac.bytestream > h->cabac.bytestream_end + 2){
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);
2565 if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
2566 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);
2567 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);
2571 if( ++s->mb_x >= s->mb_width ) {
2574 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2576 if(FIELD_OR_MBAFF_PICTURE) {
2578 if(FRAME_MBAFF && s->mb_y < s->mb_height)
2579 predict_field_decoding_flag(h);
2583 if( eos || s->mb_y >= s->mb_height ) {
2584 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2585 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);
2592 int ret = ff_h264_decode_mb_cavlc(h);
2594 if(ret>=0) ff_h264_hl_decode_mb(h);
2596 if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
2598 ret = ff_h264_decode_mb_cavlc(h);
2600 if(ret>=0) ff_h264_hl_decode_mb(h);
2605 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2606 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);
2611 if(++s->mb_x >= s->mb_width){
2614 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2616 if(FIELD_OR_MBAFF_PICTURE) {
2618 if(FRAME_MBAFF && s->mb_y < s->mb_height)
2619 predict_field_decoding_flag(h);
2621 if(s->mb_y >= s->mb_height){
2622 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2624 if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
2625 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);
2629 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);
2636 if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
2637 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2638 if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
2639 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);
2643 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);
2652 for(;s->mb_y < s->mb_height; s->mb_y++){
2653 for(;s->mb_x < s->mb_width; s->mb_x++){
2654 int ret= decode_mb(h);
2656 ff_h264_hl_decode_mb(h);
2659 av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2660 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);
2665 if(++s->mb_x >= s->mb_width){
2667 if(++s->mb_y >= s->mb_height){
2668 if(get_bits_count(s->gb) == s->gb.size_in_bits){
2669 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);
2673 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);
2680 if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
2681 if(get_bits_count(s->gb) == s->gb.size_in_bits){
2682 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);
2686 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);
2693 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2696 return -1; //not reached
2700 * Call decode_slice() for each context.
2702 * @param h h264 master context
2703 * @param context_count number of contexts to execute
2705 static void execute_decode_slices(H264Context *h, int context_count){
2706 MpegEncContext * const s = &h->s;
2707 AVCodecContext * const avctx= s->avctx;
2711 if (s->avctx->hwaccel)
2713 if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2715 if(context_count == 1) {
2716 decode_slice(avctx, &h);
2718 for(i = 1; i < context_count; i++) {
2719 hx = h->thread_context[i];
2720 hx->s.error_recognition = avctx->error_recognition;
2721 hx->s.error_count = 0;
2724 avctx->execute(avctx, (void *)decode_slice,
2725 h->thread_context, NULL, context_count, sizeof(void*));
2727 /* pull back stuff from slices to master context */
2728 hx = h->thread_context[context_count - 1];
2729 s->mb_x = hx->s.mb_x;
2730 s->mb_y = hx->s.mb_y;
2731 s->dropable = hx->s.dropable;
2732 s->picture_structure = hx->s.picture_structure;
2733 for(i = 1; i < context_count; i++)
2734 h->s.error_count += h->thread_context[i]->s.error_count;
2739 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
2740 MpegEncContext * const s = &h->s;
2741 AVCodecContext * const avctx= s->avctx;
2743 H264Context *hx; ///< thread context
2744 int context_count = 0;
2745 int next_avc= h->is_avc ? 0 : buf_size;
2747 h->max_contexts = avctx->thread_count;
2750 for(i=0; i<50; i++){
2751 av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
2754 if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
2755 h->current_slice = 0;
2756 if (!s->first_field)
2757 s->current_picture_ptr= NULL;
2758 ff_h264_reset_sei(h);
2769 if(buf_index >= next_avc) {
2770 if(buf_index >= buf_size) break;
2772 for(i = 0; i < h->nal_length_size; i++)
2773 nalsize = (nalsize << 8) | buf[buf_index++];
2774 if(nalsize <= 1 || nalsize > buf_size - buf_index){
2779 av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
2783 next_avc= buf_index + nalsize;
2785 // start code prefix search
2786 for(; buf_index + 3 < next_avc; buf_index++){
2787 // This should always succeed in the first iteration.
2788 if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
2792 if(buf_index+3 >= buf_size) break;
2795 if(buf_index >= next_avc) continue;
2798 hx = h->thread_context[context_count];
2800 ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index);
2801 if (ptr==NULL || dst_length < 0){
2804 i= buf_index + consumed;
2805 if((s->workaround_bugs & FF_BUG_AUTODETECT) && i+3<next_avc &&
2806 buf[i]==0x00 && buf[i+1]==0x00 && buf[i+2]==0x01 && buf[i+3]==0xE0)
2807 s->workaround_bugs |= FF_BUG_TRUNCATED;
2809 if(!(s->workaround_bugs & FF_BUG_TRUNCATED)){
2810 while(ptr[dst_length - 1] == 0 && dst_length > 0)
2813 bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
2815 if(s->avctx->debug&FF_DEBUG_STARTCODE){
2816 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);
2819 if (h->is_avc && (nalsize != consumed) && nalsize){
2820 av_log(h->s.avctx, AV_LOG_DEBUG, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
2823 buf_index += consumed;
2825 if( (s->hurry_up == 1 && h->nal_ref_idc == 0) //FIXME do not discard SEI id
2826 ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2831 switch(hx->nal_unit_type){
2833 if (h->nal_unit_type != NAL_IDR_SLICE) {
2834 av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
2837 idr(h); //FIXME ensure we don't loose some frames if there is reordering
2839 init_get_bits(&hx->s.gb, ptr, bit_length);
2841 hx->inter_gb_ptr= &hx->s.gb;
2842 hx->s.data_partitioning = 0;
2844 if((err = decode_slice_header(hx, h)))
2847 if (h->current_slice == 1) {
2848 if (s->avctx->hwaccel && s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
2850 if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2851 ff_vdpau_h264_picture_start(s);
2854 s->current_picture_ptr->key_frame |=
2855 (hx->nal_unit_type == NAL_IDR_SLICE) ||
2856 (h->sei_recovery_frame_cnt >= 0);
2857 if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5
2858 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2859 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=FF_B_TYPE)
2860 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2861 && avctx->skip_frame < AVDISCARD_ALL){
2862 if(avctx->hwaccel) {
2863 if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0)
2866 if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
2867 static const uint8_t start_code[] = {0x00, 0x00, 0x01};
2868 ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
2869 ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
2875 init_get_bits(&hx->s.gb, ptr, bit_length);
2877 hx->inter_gb_ptr= NULL;
2879 if ((err = decode_slice_header(hx, h)) < 0)
2882 hx->s.data_partitioning = 1;
2886 init_get_bits(&hx->intra_gb, ptr, bit_length);
2887 hx->intra_gb_ptr= &hx->intra_gb;
2890 init_get_bits(&hx->inter_gb, ptr, bit_length);
2891 hx->inter_gb_ptr= &hx->inter_gb;
2893 if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
2894 && s->context_initialized
2896 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2897 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=FF_B_TYPE)
2898 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2899 && avctx->skip_frame < AVDISCARD_ALL)
2903 init_get_bits(&s->gb, ptr, bit_length);
2904 ff_h264_decode_sei(h);
2907 init_get_bits(&s->gb, ptr, bit_length);
2908 ff_h264_decode_seq_parameter_set(h);
2910 if(s->flags& CODEC_FLAG_LOW_DELAY)
2913 if(avctx->has_b_frames < 2)
2914 avctx->has_b_frames= !s->low_delay;
2917 init_get_bits(&s->gb, ptr, bit_length);
2919 ff_h264_decode_picture_parameter_set(h, bit_length);
2923 case NAL_END_SEQUENCE:
2924 case NAL_END_STREAM:
2925 case NAL_FILLER_DATA:
2927 case NAL_AUXILIARY_SLICE:
2930 av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", hx->nal_unit_type, bit_length);
2933 if(context_count == h->max_contexts) {
2934 execute_decode_slices(h, context_count);
2939 av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
2941 /* Slice could not be decoded in parallel mode, copy down
2942 * NAL unit stuff to context 0 and restart. Note that
2943 * rbsp_buffer is not transferred, but since we no longer
2944 * run in parallel mode this should not be an issue. */
2945 h->nal_unit_type = hx->nal_unit_type;
2946 h->nal_ref_idc = hx->nal_ref_idc;
2952 execute_decode_slices(h, context_count);
2957 * returns the number of bytes consumed for building the current frame
2959 static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
2960 if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
2961 if(pos+10>buf_size) pos=buf_size; // oops ;)
2966 static int decode_frame(AVCodecContext *avctx,
2967 void *data, int *data_size,
2970 const uint8_t *buf = avpkt->data;
2971 int buf_size = avpkt->size;
2972 H264Context *h = avctx->priv_data;
2973 MpegEncContext *s = &h->s;
2974 AVFrame *pict = data;
2977 s->flags= avctx->flags;
2978 s->flags2= avctx->flags2;
2980 /* end of stream, output what is still in the buffers */
2981 if (buf_size == 0) {
2985 //FIXME factorize this with the output code below
2986 out = h->delayed_pic[0];
2988 for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2989 if(h->delayed_pic[i]->poc < out->poc){
2990 out = h->delayed_pic[i];
2994 for(i=out_idx; h->delayed_pic[i]; i++)
2995 h->delayed_pic[i] = h->delayed_pic[i+1];
2998 *data_size = sizeof(AVFrame);
2999 *pict= *(AVFrame*)out;
3005 buf_index=decode_nal_units(h, buf, buf_size);
3009 if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
3010 if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
3011 av_log(avctx, AV_LOG_ERROR, "no frame!\n");
3015 if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
3016 Picture *out = s->current_picture_ptr;
3017 Picture *cur = s->current_picture_ptr;
3018 int i, pics, out_of_order, out_idx;
3022 if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
3023 /* Wait for second field. */
3027 cur->interlaced_frame = 0;
3028 cur->repeat_pict = 0;
3030 /* Signal interlacing information externally. */
3031 /* Prioritize picture timing SEI information over used decoding process if it exists. */
3033 if(h->sps.pic_struct_present_flag){
3034 switch (h->sei_pic_struct)
3036 case SEI_PIC_STRUCT_FRAME:
3038 case SEI_PIC_STRUCT_TOP_FIELD:
3039 case SEI_PIC_STRUCT_BOTTOM_FIELD:
3040 cur->interlaced_frame = 1;
3042 case SEI_PIC_STRUCT_TOP_BOTTOM:
3043 case SEI_PIC_STRUCT_BOTTOM_TOP:
3044 if (FIELD_OR_MBAFF_PICTURE)
3045 cur->interlaced_frame = 1;
3047 // try to flag soft telecine progressive
3048 cur->interlaced_frame = h->prev_interlaced_frame;
3050 case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
3051 case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
3052 // Signal the possibility of telecined film externally (pic_struct 5,6)
3053 // From these hints, let the applications decide if they apply deinterlacing.
3054 cur->repeat_pict = 1;
3056 case SEI_PIC_STRUCT_FRAME_DOUBLING:
3057 // Force progressive here, as doubling interlaced frame is a bad idea.
3058 cur->repeat_pict = 2;
3060 case SEI_PIC_STRUCT_FRAME_TRIPLING:
3061 cur->repeat_pict = 4;
3065 if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
3066 cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0;
3068 /* Derive interlacing flag from used decoding process. */
3069 cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
3071 h->prev_interlaced_frame = cur->interlaced_frame;
3073 if (cur->field_poc[0] != cur->field_poc[1]){
3074 /* Derive top_field_first from field pocs. */
3075 cur->top_field_first = cur->field_poc[0] < cur->field_poc[1];
3077 if(cur->interlaced_frame || h->sps.pic_struct_present_flag){
3078 /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */
3079 if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM
3080 || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
3081 cur->top_field_first = 1;
3083 cur->top_field_first = 0;
3085 /* Most likely progressive */
3086 cur->top_field_first = 0;
3090 //FIXME do something with unavailable reference frames
3092 /* Sort B-frames into display order */
3094 if(h->sps.bitstream_restriction_flag
3095 && s->avctx->has_b_frames < h->sps.num_reorder_frames){
3096 s->avctx->has_b_frames = h->sps.num_reorder_frames;
3100 if( s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT
3101 && !h->sps.bitstream_restriction_flag){
3102 s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT;
3107 while(h->delayed_pic[pics]) pics++;
3109 assert(pics <= MAX_DELAYED_PIC_COUNT);
3111 h->delayed_pic[pics++] = cur;
3112 if(cur->reference == 0)
3113 cur->reference = DELAYED_PIC_REF;
3115 out = h->delayed_pic[0];
3117 for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
3118 if(h->delayed_pic[i]->poc < out->poc){
3119 out = h->delayed_pic[i];
3122 if(s->avctx->has_b_frames == 0 && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset))
3123 h->outputed_poc= INT_MIN;
3124 out_of_order = out->poc < h->outputed_poc;
3126 if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames)
3128 else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT)
3130 ((h->outputed_poc != INT_MIN && out->poc > h->outputed_poc + 2)
3131 || cur->pict_type == FF_B_TYPE)))
3134 s->avctx->has_b_frames++;
3137 if(out_of_order || pics > s->avctx->has_b_frames){
3138 out->reference &= ~DELAYED_PIC_REF;
3139 for(i=out_idx; h->delayed_pic[i]; i++)
3140 h->delayed_pic[i] = h->delayed_pic[i+1];
3142 if(!out_of_order && pics > s->avctx->has_b_frames){
3143 *data_size = sizeof(AVFrame);
3145 if(out_idx==0 && h->delayed_pic[0] && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) {
3146 h->outputed_poc = INT_MIN;
3148 h->outputed_poc = out->poc;
3149 *pict= *(AVFrame*)out;
3151 av_log(avctx, AV_LOG_DEBUG, "no picture\n");
3156 assert(pict->data[0] || !*data_size);
3157 ff_print_debug_info(s, pict);
3158 //printf("out %d\n", (int)pict->data[0]);
3160 return get_consumed_bytes(s, buf_index, buf_size);
3163 static inline void fill_mb_avail(H264Context *h){
3164 MpegEncContext * const s = &h->s;
3165 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
3168 h->mb_avail[0]= s->mb_x && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num;
3169 h->mb_avail[1]= h->slice_table[mb_xy - s->mb_stride ] == h->slice_num;
3170 h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num;
3176 h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
3177 h->mb_avail[4]= 1; //FIXME move out
3178 h->mb_avail[5]= 0; //FIXME move out
3186 #define SIZE (COUNT*40)
3192 // int int_temp[10000];
3194 AVCodecContext avctx;
3196 dsputil_init(&dsp, &avctx);
3198 init_put_bits(&pb, temp, SIZE);
3199 printf("testing unsigned exp golomb\n");
3200 for(i=0; i<COUNT; i++){
3202 set_ue_golomb(&pb, i);
3203 STOP_TIMER("set_ue_golomb");
3205 flush_put_bits(&pb);
3207 init_get_bits(&gb, temp, 8*SIZE);
3208 for(i=0; i<COUNT; i++){
3211 s= show_bits(&gb, 24);
3214 j= get_ue_golomb(&gb);
3216 printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
3219 STOP_TIMER("get_ue_golomb");
3223 init_put_bits(&pb, temp, SIZE);
3224 printf("testing signed exp golomb\n");
3225 for(i=0; i<COUNT; i++){
3227 set_se_golomb(&pb, i - COUNT/2);
3228 STOP_TIMER("set_se_golomb");
3230 flush_put_bits(&pb);
3232 init_get_bits(&gb, temp, 8*SIZE);
3233 for(i=0; i<COUNT; i++){
3236 s= show_bits(&gb, 24);
3239 j= get_se_golomb(&gb);
3240 if(j != i - COUNT/2){
3241 printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
3244 STOP_TIMER("get_se_golomb");
3248 printf("testing 4x4 (I)DCT\n");
3251 uint8_t src[16], ref[16];
3252 uint64_t error= 0, max_error=0;
3254 for(i=0; i<COUNT; i++){
3256 // printf("%d %d %d\n", r1, r2, (r2-r1)*16);
3257 for(j=0; j<16; j++){
3258 ref[j]= random()%255;
3259 src[j]= random()%255;
3262 h264_diff_dct_c(block, src, ref, 4);
3265 for(j=0; j<16; j++){
3266 // printf("%d ", block[j]);
3267 block[j]= block[j]*4;
3268 if(j&1) block[j]= (block[j]*4 + 2)/5;
3269 if(j&4) block[j]= (block[j]*4 + 2)/5;
3273 h->h264dsp.h264_idct_add(ref, block, 4);
3274 /* for(j=0; j<16; j++){
3275 printf("%d ", ref[j]);
3279 for(j=0; j<16; j++){
3280 int diff= FFABS(src[j] - ref[j]);
3283 max_error= FFMAX(max_error, diff);
3286 printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
3287 printf("testing quantizer\n");
3288 for(qp=0; qp<52; qp++){
3290 src1_block[i]= src2_block[i]= random()%255;
3293 printf("Testing NAL layer\n");
3295 uint8_t bitstream[COUNT];
3296 uint8_t nal[COUNT*2];
3298 memset(&h, 0, sizeof(H264Context));
3300 for(i=0; i<COUNT; i++){
3308 for(j=0; j<COUNT; j++){
3309 bitstream[j]= (random() % 255) + 1;
3312 for(j=0; j<zeros; j++){
3313 int pos= random() % COUNT;
3314 while(bitstream[pos] == 0){
3323 nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
3325 printf("encoding failed\n");
3329 out= ff_h264_decode_nal(&h, nal, &out_length, &consumed, nal_length);
3333 if(out_length != COUNT){
3334 printf("incorrect length %d %d\n", out_length, COUNT);
3338 if(consumed != nal_length){
3339 printf("incorrect consumed length %d %d\n", nal_length, consumed);
3343 if(memcmp(bitstream, out, COUNT)){
3344 printf("mismatch\n");
3350 printf("Testing RBSP\n");
3358 av_cold void ff_h264_free_context(H264Context *h)
3362 free_tables(h); //FIXME cleanup init stuff perhaps
3364 for(i = 0; i < MAX_SPS_COUNT; i++)
3365 av_freep(h->sps_buffers + i);
3367 for(i = 0; i < MAX_PPS_COUNT; i++)
3368 av_freep(h->pps_buffers + i);
3371 av_cold int ff_h264_decode_end(AVCodecContext *avctx)
3373 H264Context *h = avctx->priv_data;
3374 MpegEncContext *s = &h->s;
3376 ff_h264_free_context(h);
3380 // memset(h, 0, sizeof(H264Context));
3386 AVCodec h264_decoder = {
3390 sizeof(H264Context),
3391 ff_h264_decode_init,
3395 /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY,
3397 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
3400 #if CONFIG_H264_VDPAU_DECODER
3401 AVCodec h264_vdpau_decoder = {
3405 sizeof(H264Context),
3406 ff_h264_decode_init,
3410 CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3412 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
3413 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_VDPAU_H264, PIX_FMT_NONE},