2 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 * @file libavcodec/h264.c
24 * H.264 / AVC / MPEG4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
31 #include "mpegvideo.h"
34 #include "h264_mvpred.h"
35 #include "h264_parser.h"
38 #include "rectangle.h"
39 #include "vdpau_internal.h"
43 #include "x86/h264_i386.h"
49 static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp);
50 static void svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc);
52 static const uint8_t rem6[52]={
53 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,
56 static const uint8_t div6[52]={
57 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,
60 void ff_h264_write_back_intra_pred_mode(H264Context *h){
61 const int mb_xy= h->mb_xy;
63 h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1];
64 h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2];
65 h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3];
66 h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4];
67 h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4];
68 h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4];
69 h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4];
73 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
75 int ff_h264_check_intra4x4_pred_mode(H264Context *h){
76 MpegEncContext * const s = &h->s;
77 static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
78 static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
81 if(!(h->top_samples_available&0x8000)){
83 int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
85 av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
88 h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
93 if((h->left_samples_available&0x8888)!=0x8888){
94 static const int mask[4]={0x8000,0x2000,0x80,0x20};
96 if(!(h->left_samples_available&mask[i])){
97 int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
99 av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
102 h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
109 } //FIXME cleanup like ff_h264_check_intra_pred_mode
112 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
114 int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
115 MpegEncContext * const s = &h->s;
116 static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
117 static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
120 av_log(h->s.avctx, AV_LOG_ERROR, "out of range intra chroma pred mode at %d %d\n", s->mb_x, s->mb_y);
124 if(!(h->top_samples_available&0x8000)){
127 av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
132 if((h->left_samples_available&0x8080) != 0x8080){
134 if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
135 mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
138 av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
146 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
151 // src[0]&0x80; //forbidden bit
152 h->nal_ref_idc= src[0]>>5;
153 h->nal_unit_type= src[0]&0x1F;
157 for(i=0; i<length; i++)
158 printf("%2X ", src[i]);
161 #if HAVE_FAST_UNALIGNED
164 for(i=0; i+1<length; i+=9){
165 if(!((~*(const uint64_t*)(src+i) & (*(const uint64_t*)(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
168 for(i=0; i+1<length; i+=5){
169 if(!((~*(const uint32_t*)(src+i) & (*(const uint32_t*)(src+i) - 0x01000101U)) & 0x80008080U))
172 if(i>0 && !src[i]) i--;
176 for(i=0; i+1<length; i+=2){
178 if(i>0 && src[i-1]==0) i--;
180 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
182 /* startcode, so we must be past the end */
190 if(i>=length-1){ //no escaped 0
192 *consumed= length+1; //+1 for the header
196 bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
197 av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
198 dst= h->rbsp_buffer[bufidx];
204 //printf("decoding esc\n");
208 //remove escapes (very rare 1:2^22)
210 dst[di++]= src[si++];
211 dst[di++]= src[si++];
212 }else if(src[si]==0 && src[si+1]==0){
213 if(src[si+2]==3){ //escape
218 }else //next start code
222 dst[di++]= src[si++];
225 dst[di++]= src[si++];
228 memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
231 *consumed= si + 1;//+1 for the header
232 //FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
236 int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
240 tprintf(h->s.avctx, "rbsp trailing %X\n", v);
250 * IDCT transforms the 16 dc values and dequantizes them.
251 * @param qp quantization parameter
253 static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
256 int temp[16]; //FIXME check if this is a good idea
257 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
258 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
260 //memset(block, 64, 2*256);
263 const int offset= y_offset[i];
264 const int z0= block[offset+stride*0] + block[offset+stride*4];
265 const int z1= block[offset+stride*0] - block[offset+stride*4];
266 const int z2= block[offset+stride*1] - block[offset+stride*5];
267 const int z3= block[offset+stride*1] + block[offset+stride*5];
276 const int offset= x_offset[i];
277 const int z0= temp[4*0+i] + temp[4*2+i];
278 const int z1= temp[4*0+i] - temp[4*2+i];
279 const int z2= temp[4*1+i] - temp[4*3+i];
280 const int z3= temp[4*1+i] + temp[4*3+i];
282 block[stride*0 +offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); //FIXME think about merging this into decode_residual
283 block[stride*2 +offset]= ((((z1 + z2)*qmul + 128 ) >> 8));
284 block[stride*8 +offset]= ((((z1 - z2)*qmul + 128 ) >> 8));
285 block[stride*10+offset]= ((((z0 - z3)*qmul + 128 ) >> 8));
291 * DCT transforms the 16 dc values.
292 * @param qp quantization parameter ??? FIXME
294 static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
295 // const int qmul= dequant_coeff[qp][0];
297 int temp[16]; //FIXME check if this is a good idea
298 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
299 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
302 const int offset= y_offset[i];
303 const int z0= block[offset+stride*0] + block[offset+stride*4];
304 const int z1= block[offset+stride*0] - block[offset+stride*4];
305 const int z2= block[offset+stride*1] - block[offset+stride*5];
306 const int z3= block[offset+stride*1] + block[offset+stride*5];
315 const int offset= x_offset[i];
316 const int z0= temp[4*0+i] + temp[4*2+i];
317 const int z1= temp[4*0+i] - temp[4*2+i];
318 const int z2= temp[4*1+i] - temp[4*3+i];
319 const int z3= temp[4*1+i] + temp[4*3+i];
321 block[stride*0 +offset]= (z0 + z3)>>1;
322 block[stride*2 +offset]= (z1 + z2)>>1;
323 block[stride*8 +offset]= (z1 - z2)>>1;
324 block[stride*10+offset]= (z0 - z3)>>1;
332 static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp, int qmul){
333 const int stride= 16*2;
334 const int xStride= 16;
337 a= block[stride*0 + xStride*0];
338 b= block[stride*0 + xStride*1];
339 c= block[stride*1 + xStride*0];
340 d= block[stride*1 + xStride*1];
347 block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7;
348 block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7;
349 block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7;
350 block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7;
354 static void chroma_dc_dct_c(DCTELEM *block){
355 const int stride= 16*2;
356 const int xStride= 16;
359 a= block[stride*0 + xStride*0];
360 b= block[stride*0 + xStride*1];
361 c= block[stride*1 + xStride*0];
362 d= block[stride*1 + xStride*1];
369 block[stride*0 + xStride*0]= (a+c);
370 block[stride*0 + xStride*1]= (e+b);
371 block[stride*1 + xStride*0]= (a-c);
372 block[stride*1 + xStride*1]= (e-b);
376 static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
377 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
378 int src_x_offset, int src_y_offset,
379 qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){
380 MpegEncContext * const s = &h->s;
381 const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
382 int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
383 const int luma_xy= (mx&3) + ((my&3)<<2);
384 uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*h->mb_linesize;
385 uint8_t * src_cb, * src_cr;
386 int extra_width= h->emu_edge_width;
387 int extra_height= h->emu_edge_height;
389 const int full_mx= mx>>2;
390 const int full_my= my>>2;
391 const int pic_width = 16*s->mb_width;
392 const int pic_height = 16*s->mb_height >> MB_FIELD;
394 if(mx&7) extra_width -= 3;
395 if(my&7) extra_height -= 3;
397 if( full_mx < 0-extra_width
398 || full_my < 0-extra_height
399 || full_mx + 16/*FIXME*/ > pic_width + extra_width
400 || full_my + 16/*FIXME*/ > pic_height + extra_height){
401 ff_emulated_edge_mc(s->edge_emu_buffer, src_y - 2 - 2*h->mb_linesize, h->mb_linesize, 16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, pic_width, pic_height);
402 src_y= s->edge_emu_buffer + 2 + 2*h->mb_linesize;
406 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
408 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
411 if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
414 // chroma offset when predicting from a field of opposite parity
415 my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
416 emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
418 src_cb= pic->data[1] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
419 src_cr= pic->data[2] + (mx>>3) + (my>>3)*h->mb_uvlinesize;
422 ff_emulated_edge_mc(s->edge_emu_buffer, src_cb, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
423 src_cb= s->edge_emu_buffer;
425 chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
428 ff_emulated_edge_mc(s->edge_emu_buffer, src_cr, h->mb_uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), pic_width>>1, pic_height>>1);
429 src_cr= s->edge_emu_buffer;
431 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
434 static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
435 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
436 int x_offset, int y_offset,
437 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
438 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
439 int list0, int list1){
440 MpegEncContext * const s = &h->s;
441 qpel_mc_func *qpix_op= qpix_put;
442 h264_chroma_mc_func chroma_op= chroma_put;
444 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
445 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
446 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
447 x_offset += 8*s->mb_x;
448 y_offset += 8*(s->mb_y >> MB_FIELD);
451 Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
452 mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
453 dest_y, dest_cb, dest_cr, x_offset, y_offset,
457 chroma_op= chroma_avg;
461 Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
462 mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
463 dest_y, dest_cb, dest_cr, x_offset, y_offset,
468 static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
469 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
470 int x_offset, int y_offset,
471 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
472 h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
473 h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
474 int list0, int list1){
475 MpegEncContext * const s = &h->s;
477 dest_y += 2*x_offset + 2*y_offset*h-> mb_linesize;
478 dest_cb += x_offset + y_offset*h->mb_uvlinesize;
479 dest_cr += x_offset + y_offset*h->mb_uvlinesize;
480 x_offset += 8*s->mb_x;
481 y_offset += 8*(s->mb_y >> MB_FIELD);
484 /* don't optimize for luma-only case, since B-frames usually
485 * use implicit weights => chroma too. */
486 uint8_t *tmp_cb = s->obmc_scratchpad;
487 uint8_t *tmp_cr = s->obmc_scratchpad + 8;
488 uint8_t *tmp_y = s->obmc_scratchpad + 8*h->mb_uvlinesize;
489 int refn0 = h->ref_cache[0][ scan8[n] ];
490 int refn1 = h->ref_cache[1][ scan8[n] ];
492 mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
493 dest_y, dest_cb, dest_cr,
494 x_offset, y_offset, qpix_put, chroma_put);
495 mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
496 tmp_y, tmp_cb, tmp_cr,
497 x_offset, y_offset, qpix_put, chroma_put);
499 if(h->use_weight == 2){
500 int weight0 = h->implicit_weight[refn0][refn1];
501 int weight1 = 64 - weight0;
502 luma_weight_avg( dest_y, tmp_y, h-> mb_linesize, 5, weight0, weight1, 0);
503 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
504 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
506 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
507 h->luma_weight[0][refn0], h->luma_weight[1][refn1],
508 h->luma_offset[0][refn0] + h->luma_offset[1][refn1]);
509 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
510 h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0],
511 h->chroma_offset[0][refn0][0] + h->chroma_offset[1][refn1][0]);
512 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
513 h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1],
514 h->chroma_offset[0][refn0][1] + h->chroma_offset[1][refn1][1]);
517 int list = list1 ? 1 : 0;
518 int refn = h->ref_cache[list][ scan8[n] ];
519 Picture *ref= &h->ref_list[list][refn];
520 mc_dir_part(h, ref, n, square, chroma_height, delta, list,
521 dest_y, dest_cb, dest_cr, x_offset, y_offset,
522 qpix_put, chroma_put);
524 luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
525 h->luma_weight[list][refn], h->luma_offset[list][refn]);
526 if(h->use_weight_chroma){
527 chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
528 h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]);
529 chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
530 h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]);
535 static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
536 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
537 int x_offset, int y_offset,
538 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
539 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
540 h264_weight_func *weight_op, h264_biweight_func *weight_avg,
541 int list0, int list1){
542 if((h->use_weight==2 && list0 && list1
543 && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32))
545 mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
546 x_offset, y_offset, qpix_put, chroma_put,
547 weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1);
549 mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
550 x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1);
553 static inline void prefetch_motion(H264Context *h, int list){
554 /* fetch pixels for estimated mv 4 macroblocks ahead
555 * optimized for 64byte cache lines */
556 MpegEncContext * const s = &h->s;
557 const int refn = h->ref_cache[list][scan8[0]];
559 const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
560 const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
561 uint8_t **src= h->ref_list[list][refn].data;
562 int off= mx + (my + (s->mb_x&3)*4)*h->mb_linesize + 64;
563 s->dsp.prefetch(src[0]+off, s->linesize, 4);
564 off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
565 s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
569 static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
570 qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
571 qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
572 h264_weight_func *weight_op, h264_biweight_func *weight_avg){
573 MpegEncContext * const s = &h->s;
574 const int mb_xy= h->mb_xy;
575 const int mb_type= s->current_picture.mb_type[mb_xy];
577 assert(IS_INTER(mb_type));
579 prefetch_motion(h, 0);
581 if(IS_16X16(mb_type)){
582 mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
583 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
584 &weight_op[0], &weight_avg[0],
585 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
586 }else if(IS_16X8(mb_type)){
587 mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0,
588 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
589 &weight_op[1], &weight_avg[1],
590 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
591 mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4,
592 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
593 &weight_op[1], &weight_avg[1],
594 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
595 }else if(IS_8X16(mb_type)){
596 mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
597 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
598 &weight_op[2], &weight_avg[2],
599 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
600 mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
601 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
602 &weight_op[2], &weight_avg[2],
603 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
607 assert(IS_8X8(mb_type));
610 const int sub_mb_type= h->sub_mb_type[i];
612 int x_offset= (i&1)<<2;
613 int y_offset= (i&2)<<1;
615 if(IS_SUB_8X8(sub_mb_type)){
616 mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
617 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
618 &weight_op[3], &weight_avg[3],
619 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
620 }else if(IS_SUB_8X4(sub_mb_type)){
621 mc_part(h, n , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset,
622 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
623 &weight_op[4], &weight_avg[4],
624 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
625 mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
626 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
627 &weight_op[4], &weight_avg[4],
628 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
629 }else if(IS_SUB_4X8(sub_mb_type)){
630 mc_part(h, n , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
631 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
632 &weight_op[5], &weight_avg[5],
633 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
634 mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
635 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
636 &weight_op[5], &weight_avg[5],
637 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
640 assert(IS_SUB_4X4(sub_mb_type));
642 int sub_x_offset= x_offset + 2*(j&1);
643 int sub_y_offset= y_offset + (j&2);
644 mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
645 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
646 &weight_op[6], &weight_avg[6],
647 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
653 prefetch_motion(h, 1);
657 static void free_tables(H264Context *h){
660 av_freep(&h->intra4x4_pred_mode);
661 av_freep(&h->chroma_pred_mode_table);
662 av_freep(&h->cbp_table);
663 av_freep(&h->mvd_table[0]);
664 av_freep(&h->mvd_table[1]);
665 av_freep(&h->direct_table);
666 av_freep(&h->non_zero_count);
667 av_freep(&h->slice_table_base);
668 h->slice_table= NULL;
670 av_freep(&h->mb2b_xy);
671 av_freep(&h->mb2b8_xy);
673 for(i = 0; i < MAX_THREADS; i++) {
674 hx = h->thread_context[i];
676 av_freep(&hx->top_borders[1]);
677 av_freep(&hx->top_borders[0]);
678 av_freep(&hx->s.obmc_scratchpad);
679 av_freep(&hx->rbsp_buffer[1]);
680 av_freep(&hx->rbsp_buffer[0]);
681 hx->rbsp_buffer_size[0] = 0;
682 hx->rbsp_buffer_size[1] = 0;
683 if (i) av_freep(&h->thread_context[i]);
687 static void init_dequant8_coeff_table(H264Context *h){
689 const int transpose = (h->s.dsp.h264_idct8_add != ff_h264_idct8_add_c); //FIXME ugly
690 h->dequant8_coeff[0] = h->dequant8_buffer[0];
691 h->dequant8_coeff[1] = h->dequant8_buffer[1];
694 if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
695 h->dequant8_coeff[1] = h->dequant8_buffer[0];
703 h->dequant8_coeff[i][q][transpose ? (x>>3)|((x&7)<<3) : x] =
704 ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
705 h->pps.scaling_matrix8[i][x]) << shift;
710 static void init_dequant4_coeff_table(H264Context *h){
712 const int transpose = (h->s.dsp.h264_idct_add != ff_h264_idct_add_c); //FIXME ugly
714 h->dequant4_coeff[i] = h->dequant4_buffer[i];
716 if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
717 h->dequant4_coeff[i] = h->dequant4_buffer[j];
725 int shift = div6[q] + 2;
728 h->dequant4_coeff[i][q][transpose ? (x>>2)|((x<<2)&0xF) : x] =
729 ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
730 h->pps.scaling_matrix4[i][x]) << shift;
735 static void init_dequant_tables(H264Context *h){
737 init_dequant4_coeff_table(h);
738 if(h->pps.transform_8x8_mode)
739 init_dequant8_coeff_table(h);
740 if(h->sps.transform_bypass){
743 h->dequant4_coeff[i][0][x] = 1<<6;
744 if(h->pps.transform_8x8_mode)
747 h->dequant8_coeff[i][0][x] = 1<<6;
752 int ff_h264_alloc_tables(H264Context *h){
753 MpegEncContext * const s = &h->s;
754 const int big_mb_num= s->mb_stride * (s->mb_height+1);
757 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, big_mb_num * 8 * sizeof(uint8_t), fail)
759 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count , big_mb_num * 16 * 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], 32*big_mb_num * sizeof(uint16_t), fail);
765 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t), fail);
766 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 32*big_mb_num * sizeof(uint8_t) , fail);
768 memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base));
769 h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
771 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy , big_mb_num * sizeof(uint32_t), fail);
772 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b8_xy , big_mb_num * sizeof(uint32_t), fail);
773 for(y=0; y<s->mb_height; y++){
774 for(x=0; x<s->mb_width; x++){
775 const int mb_xy= x + y*s->mb_stride;
776 const int b_xy = 4*x + 4*y*h->b_stride;
777 const int b8_xy= 2*x + 2*y*h->b8_stride;
779 h->mb2b_xy [mb_xy]= b_xy;
780 h->mb2b8_xy[mb_xy]= b8_xy;
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){
799 dst->intra4x4_pred_mode = src->intra4x4_pred_mode;
800 dst->non_zero_count = src->non_zero_count;
801 dst->slice_table = src->slice_table;
802 dst->cbp_table = src->cbp_table;
803 dst->mb2b_xy = src->mb2b_xy;
804 dst->mb2b8_xy = src->mb2b8_xy;
805 dst->chroma_pred_mode_table = src->chroma_pred_mode_table;
806 dst->mvd_table[0] = src->mvd_table[0];
807 dst->mvd_table[1] = src->mvd_table[1];
808 dst->direct_table = src->direct_table;
810 dst->s.obmc_scratchpad = NULL;
811 ff_h264_pred_init(&dst->hpc, src->s.codec_id);
816 * Allocate buffers which are not shared amongst multiple threads.
818 static int context_init(H264Context *h){
819 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
820 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t), fail)
824 return -1; // free_tables will clean up for us
827 static av_cold void common_init(H264Context *h){
828 MpegEncContext * const s = &h->s;
830 s->width = s->avctx->width;
831 s->height = s->avctx->height;
832 s->codec_id= s->avctx->codec->id;
834 ff_h264_pred_init(&h->hpc, s->codec_id);
836 h->dequant_coeff_pps= -1;
837 s->unrestricted_mv=1;
840 dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
842 memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
843 memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
846 av_cold int ff_h264_decode_init(AVCodecContext *avctx){
847 H264Context *h= avctx->priv_data;
848 MpegEncContext * const s = &h->s;
850 MPV_decode_defaults(s);
855 s->out_format = FMT_H264;
856 s->workaround_bugs= avctx->workaround_bugs;
859 // s->decode_mb= ff_h263_decode_mb;
860 s->quarter_sample = 1;
861 if(!avctx->has_b_frames)
864 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
866 ff_h264_decode_init_vlc();
868 if(avctx->extradata_size > 0 && avctx->extradata &&
869 *(char *)avctx->extradata == 1){
876 h->thread_context[0] = h;
877 h->outputed_poc = INT_MIN;
878 h->prev_poc_msb= 1<<16;
879 ff_h264_reset_sei(h);
880 if(avctx->codec_id == CODEC_ID_H264){
881 if(avctx->ticks_per_frame == 1){
882 s->avctx->time_base.den *=2;
884 avctx->ticks_per_frame = 2;
889 int ff_h264_frame_start(H264Context *h){
890 MpegEncContext * const s = &h->s;
893 if(MPV_frame_start(s, s->avctx) < 0)
895 ff_er_frame_start(s);
897 * MPV_frame_start uses pict_type to derive key_frame.
898 * This is incorrect for H.264; IDR markings must be used.
899 * Zero here; IDR markings per slice in frame or fields are ORed in later.
900 * See decode_nal_units().
902 s->current_picture_ptr->key_frame= 0;
903 s->current_picture_ptr->mmco_reset= 0;
905 assert(s->linesize && s->uvlinesize);
908 h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
909 h->block_offset[24+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
912 h->block_offset[16+i]=
913 h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
914 h->block_offset[24+16+i]=
915 h->block_offset[24+20+i]= 4*((scan8[i] - scan8[0])&7) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
918 /* can't be in alloc_tables because linesize isn't known there.
919 * FIXME: redo bipred weight to not require extra buffer? */
920 for(i = 0; i < s->avctx->thread_count; i++)
921 if(!h->thread_context[i]->s.obmc_scratchpad)
922 h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
924 /* some macroblocks will be accessed before they're available */
925 if(FRAME_MBAFF || s->avctx->thread_count > 1)
926 memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
928 // s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
930 // We mark the current picture as non-reference after allocating it, so
931 // that if we break out due to an error it can be released automatically
932 // in the next MPV_frame_start().
933 // SVQ3 as well as most other codecs have only last/next/current and thus
934 // get released even with set reference, besides SVQ3 and others do not
935 // mark frames as reference later "naturally".
936 if(s->codec_id != CODEC_ID_SVQ3)
937 s->current_picture_ptr->reference= 0;
939 s->current_picture_ptr->field_poc[0]=
940 s->current_picture_ptr->field_poc[1]= INT_MAX;
941 assert(s->current_picture_ptr->long_ref==0);
946 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){
947 MpegEncContext * const s = &h->s;
956 src_cb -= uvlinesize;
957 src_cr -= uvlinesize;
959 if(!simple && FRAME_MBAFF){
961 offset = MB_MBAFF ? 1 : 17;
962 uvoffset= MB_MBAFF ? 1 : 9;
964 *(uint64_t*)(h->top_borders[0][s->mb_x]+ 0)= *(uint64_t*)(src_y + 15*linesize);
965 *(uint64_t*)(h->top_borders[0][s->mb_x]+ 8)= *(uint64_t*)(src_y +8+15*linesize);
966 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
967 *(uint64_t*)(h->top_borders[0][s->mb_x]+16)= *(uint64_t*)(src_cb+7*uvlinesize);
968 *(uint64_t*)(h->top_borders[0][s->mb_x]+24)= *(uint64_t*)(src_cr+7*uvlinesize);
973 h->left_border[0]= h->top_borders[0][s->mb_x][15];
974 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
975 h->left_border[34 ]= h->top_borders[0][s->mb_x][16+7 ];
976 h->left_border[34+18]= h->top_borders[0][s->mb_x][16+8+7];
982 top_idx = MB_MBAFF ? 0 : 1;
984 step= MB_MBAFF ? 2 : 1;
987 // There are two lines saved, the line above the the top macroblock of a pair,
988 // and the line above the bottom macroblock
989 h->left_border[offset]= h->top_borders[top_idx][s->mb_x][15];
990 for(i=1; i<17 - skiplast; i++){
991 h->left_border[offset+i*step]= src_y[15+i* linesize];
994 *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0)= *(uint64_t*)(src_y + 16*linesize);
995 *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8)= *(uint64_t*)(src_y +8+16*linesize);
997 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
998 h->left_border[uvoffset+34 ]= h->top_borders[top_idx][s->mb_x][16+7];
999 h->left_border[uvoffset+34+18]= h->top_borders[top_idx][s->mb_x][24+7];
1000 for(i=1; i<9 - skiplast; i++){
1001 h->left_border[uvoffset+34 +i*step]= src_cb[7+i*uvlinesize];
1002 h->left_border[uvoffset+34+18+i*step]= src_cr[7+i*uvlinesize];
1004 *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16)= *(uint64_t*)(src_cb+8*uvlinesize);
1005 *(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24)= *(uint64_t*)(src_cr+8*uvlinesize);
1009 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){
1010 MpegEncContext * const s = &h->s;
1021 if(!simple && FRAME_MBAFF){
1023 offset = MB_MBAFF ? 1 : 17;
1024 uvoffset= MB_MBAFF ? 1 : 9;
1028 top_idx = MB_MBAFF ? 0 : 1;
1030 step= MB_MBAFF ? 2 : 1;
1033 if(h->deblocking_filter == 2) {
1035 deblock_left = h->slice_table[mb_xy] == h->slice_table[mb_xy - 1];
1036 deblock_top = h->slice_table[mb_xy] == h->slice_table[h->top_mb_xy];
1038 deblock_left = (s->mb_x > 0);
1039 deblock_top = (s->mb_y > !!MB_FIELD);
1042 src_y -= linesize + 1;
1043 src_cb -= uvlinesize + 1;
1044 src_cr -= uvlinesize + 1;
1046 #define XCHG(a,b,t,xchg)\
1053 for(i = !deblock_top; i<16; i++){
1054 XCHG(h->left_border[offset+i*step], src_y [i* linesize], temp8, xchg);
1056 XCHG(h->left_border[offset+i*step], src_y [i* linesize], temp8, 1);
1060 XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg);
1061 XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1);
1062 if(s->mb_x+1 < s->mb_width){
1063 XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x+1]), *(uint64_t*)(src_y +17), temp64, 1);
1067 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1069 for(i = !deblock_top; i<8; i++){
1070 XCHG(h->left_border[uvoffset+34 +i*step], src_cb[i*uvlinesize], temp8, xchg);
1071 XCHG(h->left_border[uvoffset+34+18+i*step], src_cr[i*uvlinesize], temp8, xchg);
1073 XCHG(h->left_border[uvoffset+34 +i*step], src_cb[i*uvlinesize], temp8, 1);
1074 XCHG(h->left_border[uvoffset+34+18+i*step], src_cr[i*uvlinesize], temp8, 1);
1077 XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1);
1078 XCHG(*(uint64_t*)(h->top_borders[top_idx][s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1);
1083 static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple){
1084 MpegEncContext * const s = &h->s;
1085 const int mb_x= s->mb_x;
1086 const int mb_y= s->mb_y;
1087 const int mb_xy= h->mb_xy;
1088 const int mb_type= s->current_picture.mb_type[mb_xy];
1089 uint8_t *dest_y, *dest_cb, *dest_cr;
1090 int linesize, uvlinesize /*dct_offset*/;
1092 int *block_offset = &h->block_offset[0];
1093 const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
1094 /* is_h264 should always be true if SVQ3 is disabled. */
1095 const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
1096 void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1097 void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1099 dest_y = s->current_picture.data[0] + (mb_x + mb_y * s->linesize ) * 16;
1100 dest_cb = s->current_picture.data[1] + (mb_x + mb_y * s->uvlinesize) * 8;
1101 dest_cr = s->current_picture.data[2] + (mb_x + mb_y * s->uvlinesize) * 8;
1103 s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + 64, s->linesize, 4);
1104 s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + 64, dest_cr - dest_cb, 2);
1106 if (!simple && MB_FIELD) {
1107 linesize = h->mb_linesize = s->linesize * 2;
1108 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
1109 block_offset = &h->block_offset[24];
1110 if(mb_y&1){ //FIXME move out of this function?
1111 dest_y -= s->linesize*15;
1112 dest_cb-= s->uvlinesize*7;
1113 dest_cr-= s->uvlinesize*7;
1117 for(list=0; list<h->list_count; list++){
1118 if(!USES_LIST(mb_type, list))
1120 if(IS_16X16(mb_type)){
1121 int8_t *ref = &h->ref_cache[list][scan8[0]];
1122 fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
1124 for(i=0; i<16; i+=4){
1125 int ref = h->ref_cache[list][scan8[i]];
1127 fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
1133 linesize = h->mb_linesize = s->linesize;
1134 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
1135 // dct_offset = s->linesize * 16;
1138 if (!simple && IS_INTRA_PCM(mb_type)) {
1139 for (i=0; i<16; i++) {
1140 memcpy(dest_y + i* linesize, h->mb + i*8, 16);
1142 for (i=0; i<8; i++) {
1143 memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4, 8);
1144 memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4, 8);
1147 if(IS_INTRA(mb_type)){
1148 if(h->deblocking_filter)
1149 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple);
1151 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1152 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
1153 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
1156 if(IS_INTRA4x4(mb_type)){
1157 if(simple || !s->encoding){
1158 if(IS_8x8DCT(mb_type)){
1159 if(transform_bypass){
1161 idct_add = s->dsp.add_pixels8;
1163 idct_dc_add = s->dsp.h264_idct8_dc_add;
1164 idct_add = s->dsp.h264_idct8_add;
1166 for(i=0; i<16; i+=4){
1167 uint8_t * const ptr= dest_y + block_offset[i];
1168 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1169 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1170 h->hpc.pred8x8l_add[dir](ptr, h->mb + i*16, linesize);
1172 const int nnz = h->non_zero_count_cache[ scan8[i] ];
1173 h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
1174 (h->topright_samples_available<<i)&0x4000, linesize);
1176 if(nnz == 1 && h->mb[i*16])
1177 idct_dc_add(ptr, h->mb + i*16, linesize);
1179 idct_add (ptr, h->mb + i*16, linesize);
1184 if(transform_bypass){
1186 idct_add = s->dsp.add_pixels4;
1188 idct_dc_add = s->dsp.h264_idct_dc_add;
1189 idct_add = s->dsp.h264_idct_add;
1191 for(i=0; i<16; i++){
1192 uint8_t * const ptr= dest_y + block_offset[i];
1193 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1195 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1196 h->hpc.pred4x4_add[dir](ptr, h->mb + i*16, linesize);
1200 if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
1201 const int topright_avail= (h->topright_samples_available<<i)&0x8000;
1202 assert(mb_y || linesize <= block_offset[i]);
1203 if(!topright_avail){
1204 tr= ptr[3 - linesize]*0x01010101;
1205 topright= (uint8_t*) &tr;
1207 topright= ptr + 4 - linesize;
1211 h->hpc.pred4x4[ dir ](ptr, topright, linesize);
1212 nnz = h->non_zero_count_cache[ scan8[i] ];
1215 if(nnz == 1 && h->mb[i*16])
1216 idct_dc_add(ptr, h->mb + i*16, linesize);
1218 idct_add (ptr, h->mb + i*16, linesize);
1220 svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
1227 h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
1229 if(!transform_bypass)
1230 h264_luma_dc_dequant_idct_c(h->mb, s->qscale, h->dequant4_coeff[0][s->qscale][0]);
1232 svq3_luma_dc_dequant_idct_c(h->mb, s->qscale);
1234 if(h->deblocking_filter)
1235 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple);
1237 hl_motion(h, dest_y, dest_cb, dest_cr,
1238 s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1239 s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1240 s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab);
1244 if(!IS_INTRA4x4(mb_type)){
1246 if(IS_INTRA16x16(mb_type)){
1247 if(transform_bypass){
1248 if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
1249 h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
1251 for(i=0; i<16; i++){
1252 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1253 s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + i*16, linesize);
1257 s->dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1259 }else if(h->cbp&15){
1260 if(transform_bypass){
1261 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1262 idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
1263 for(i=0; i<16; i+=di){
1264 if(h->non_zero_count_cache[ scan8[i] ]){
1265 idct_add(dest_y + block_offset[i], h->mb + i*16, linesize);
1269 if(IS_8x8DCT(mb_type)){
1270 s->dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1272 s->dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1277 for(i=0; i<16; i++){
1278 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
1279 uint8_t * const ptr= dest_y + block_offset[i];
1280 svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1286 if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
1287 uint8_t *dest[2] = {dest_cb, dest_cr};
1288 if(transform_bypass){
1289 if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
1290 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + 16*16, uvlinesize);
1291 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + 20*16, uvlinesize);
1293 idct_add = s->dsp.add_pixels4;
1294 for(i=16; i<16+8; i++){
1295 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16])
1296 idct_add (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1300 chroma_dc_dequant_idct_c(h->mb + 16*16, h->chroma_qp[0], h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
1301 chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp[1], h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]);
1303 idct_add = s->dsp.h264_idct_add;
1304 idct_dc_add = s->dsp.h264_idct_dc_add;
1305 for(i=16; i<16+8; i++){
1306 if(h->non_zero_count_cache[ scan8[i] ])
1307 idct_add (dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1308 else if(h->mb[i*16])
1309 idct_dc_add(dest[(i&4)>>2] + block_offset[i], h->mb + i*16, uvlinesize);
1312 for(i=16; i<16+8; i++){
1313 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
1314 uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
1315 svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[s->qscale + 12] - 12, 2);
1322 if(h->cbp || IS_INTRA(mb_type))
1323 s->dsp.clear_blocks(h->mb);
1325 if(h->deblocking_filter) {
1326 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, simple);
1327 fill_caches(h, mb_type, 1); //FIXME don't fill stuff which isn't used by filter_mb
1328 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
1329 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
1330 if (!simple && FRAME_MBAFF) {
1331 ff_h264_filter_mb (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
1333 ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
1339 * Process a macroblock; this case avoids checks for expensive uncommon cases.
1341 static void hl_decode_mb_simple(H264Context *h){
1342 hl_decode_mb_internal(h, 1);
1346 * Process a macroblock; this handles edge cases, such as interlacing.
1348 static void av_noinline hl_decode_mb_complex(H264Context *h){
1349 hl_decode_mb_internal(h, 0);
1352 void ff_h264_hl_decode_mb(H264Context *h){
1353 MpegEncContext * const s = &h->s;
1354 const int mb_xy= h->mb_xy;
1355 const int mb_type= s->current_picture.mb_type[mb_xy];
1356 int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1359 hl_decode_mb_complex(h);
1360 else hl_decode_mb_simple(h);
1363 static int pred_weight_table(H264Context *h){
1364 MpegEncContext * const s = &h->s;
1366 int luma_def, chroma_def;
1369 h->use_weight_chroma= 0;
1370 h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
1371 h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
1372 luma_def = 1<<h->luma_log2_weight_denom;
1373 chroma_def = 1<<h->chroma_log2_weight_denom;
1375 for(list=0; list<2; list++){
1376 h->luma_weight_flag[list] = 0;
1377 h->chroma_weight_flag[list] = 0;
1378 for(i=0; i<h->ref_count[list]; i++){
1379 int luma_weight_flag, chroma_weight_flag;
1381 luma_weight_flag= get_bits1(&s->gb);
1382 if(luma_weight_flag){
1383 h->luma_weight[list][i]= get_se_golomb(&s->gb);
1384 h->luma_offset[list][i]= get_se_golomb(&s->gb);
1385 if( h->luma_weight[list][i] != luma_def
1386 || h->luma_offset[list][i] != 0) {
1388 h->luma_weight_flag[list]= 1;
1391 h->luma_weight[list][i]= luma_def;
1392 h->luma_offset[list][i]= 0;
1396 chroma_weight_flag= get_bits1(&s->gb);
1397 if(chroma_weight_flag){
1400 h->chroma_weight[list][i][j]= get_se_golomb(&s->gb);
1401 h->chroma_offset[list][i][j]= get_se_golomb(&s->gb);
1402 if( h->chroma_weight[list][i][j] != chroma_def
1403 || h->chroma_offset[list][i][j] != 0) {
1404 h->use_weight_chroma= 1;
1405 h->chroma_weight_flag[list]= 1;
1411 h->chroma_weight[list][i][j]= chroma_def;
1412 h->chroma_offset[list][i][j]= 0;
1417 if(h->slice_type_nos != FF_B_TYPE) break;
1419 h->use_weight= h->use_weight || h->use_weight_chroma;
1423 static void implicit_weight_table(H264Context *h){
1424 MpegEncContext * const s = &h->s;
1426 int cur_poc = s->current_picture_ptr->poc;
1428 for (i = 0; i < 2; i++) {
1429 h->luma_weight_flag[i] = 0;
1430 h->chroma_weight_flag[i] = 0;
1433 if( h->ref_count[0] == 1 && h->ref_count[1] == 1
1434 && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
1436 h->use_weight_chroma= 0;
1441 h->use_weight_chroma= 2;
1442 h->luma_log2_weight_denom= 5;
1443 h->chroma_log2_weight_denom= 5;
1445 for(ref0=0; ref0 < h->ref_count[0]; ref0++){
1446 int poc0 = h->ref_list[0][ref0].poc;
1447 for(ref1=0; ref1 < h->ref_count[1]; ref1++){
1448 int poc1 = h->ref_list[1][ref1].poc;
1449 int td = av_clip(poc1 - poc0, -128, 127);
1451 int tb = av_clip(cur_poc - poc0, -128, 127);
1452 int tx = (16384 + (FFABS(td) >> 1)) / td;
1453 int dist_scale_factor = av_clip((tb*tx + 32) >> 6, -1024, 1023) >> 2;
1454 if(dist_scale_factor < -64 || dist_scale_factor > 128)
1455 h->implicit_weight[ref0][ref1] = 32;
1457 h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor;
1459 h->implicit_weight[ref0][ref1] = 32;
1465 * instantaneous decoder refresh.
1467 static void idr(H264Context *h){
1468 ff_h264_remove_all_refs(h);
1469 h->prev_frame_num= 0;
1470 h->prev_frame_num_offset= 0;
1475 /* forget old pics after a seek */
1476 static void flush_dpb(AVCodecContext *avctx){
1477 H264Context *h= avctx->priv_data;
1479 for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
1480 if(h->delayed_pic[i])
1481 h->delayed_pic[i]->reference= 0;
1482 h->delayed_pic[i]= NULL;
1484 h->outputed_poc= INT_MIN;
1485 h->prev_interlaced_frame = 1;
1487 if(h->s.current_picture_ptr)
1488 h->s.current_picture_ptr->reference= 0;
1489 h->s.first_field= 0;
1490 ff_h264_reset_sei(h);
1491 ff_mpeg_flush(avctx);
1494 static int init_poc(H264Context *h){
1495 MpegEncContext * const s = &h->s;
1496 const int max_frame_num= 1<<h->sps.log2_max_frame_num;
1498 Picture *cur = s->current_picture_ptr;
1500 h->frame_num_offset= h->prev_frame_num_offset;
1501 if(h->frame_num < h->prev_frame_num)
1502 h->frame_num_offset += max_frame_num;
1504 if(h->sps.poc_type==0){
1505 const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
1507 if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
1508 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
1509 else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
1510 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
1512 h->poc_msb = h->prev_poc_msb;
1513 //printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
1515 field_poc[1] = h->poc_msb + h->poc_lsb;
1516 if(s->picture_structure == PICT_FRAME)
1517 field_poc[1] += h->delta_poc_bottom;
1518 }else if(h->sps.poc_type==1){
1519 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
1522 if(h->sps.poc_cycle_length != 0)
1523 abs_frame_num = h->frame_num_offset + h->frame_num;
1527 if(h->nal_ref_idc==0 && abs_frame_num > 0)
1530 expected_delta_per_poc_cycle = 0;
1531 for(i=0; i < h->sps.poc_cycle_length; i++)
1532 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
1534 if(abs_frame_num > 0){
1535 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
1536 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
1538 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
1539 for(i = 0; i <= frame_num_in_poc_cycle; i++)
1540 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
1544 if(h->nal_ref_idc == 0)
1545 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
1547 field_poc[0] = expectedpoc + h->delta_poc[0];
1548 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
1550 if(s->picture_structure == PICT_FRAME)
1551 field_poc[1] += h->delta_poc[1];
1553 int poc= 2*(h->frame_num_offset + h->frame_num);
1562 if(s->picture_structure != PICT_BOTTOM_FIELD)
1563 s->current_picture_ptr->field_poc[0]= field_poc[0];
1564 if(s->picture_structure != PICT_TOP_FIELD)
1565 s->current_picture_ptr->field_poc[1]= field_poc[1];
1566 cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
1573 * initialize scan tables
1575 static void init_scan_tables(H264Context *h){
1576 MpegEncContext * const s = &h->s;
1578 if(s->dsp.h264_idct_add == ff_h264_idct_add_c){ //FIXME little ugly
1579 memcpy(h->zigzag_scan, zigzag_scan, 16*sizeof(uint8_t));
1580 memcpy(h-> field_scan, field_scan, 16*sizeof(uint8_t));
1582 for(i=0; i<16; i++){
1583 #define T(x) (x>>2) | ((x<<2) & 0xF)
1584 h->zigzag_scan[i] = T(zigzag_scan[i]);
1585 h-> field_scan[i] = T( field_scan[i]);
1589 if(s->dsp.h264_idct8_add == ff_h264_idct8_add_c){
1590 memcpy(h->zigzag_scan8x8, ff_zigzag_direct, 64*sizeof(uint8_t));
1591 memcpy(h->zigzag_scan8x8_cavlc, zigzag_scan8x8_cavlc, 64*sizeof(uint8_t));
1592 memcpy(h->field_scan8x8, field_scan8x8, 64*sizeof(uint8_t));
1593 memcpy(h->field_scan8x8_cavlc, field_scan8x8_cavlc, 64*sizeof(uint8_t));
1595 for(i=0; i<64; i++){
1596 #define T(x) (x>>3) | ((x&7)<<3)
1597 h->zigzag_scan8x8[i] = T(ff_zigzag_direct[i]);
1598 h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
1599 h->field_scan8x8[i] = T(field_scan8x8[i]);
1600 h->field_scan8x8_cavlc[i] = T(field_scan8x8_cavlc[i]);
1604 if(h->sps.transform_bypass){ //FIXME same ugly
1605 h->zigzag_scan_q0 = zigzag_scan;
1606 h->zigzag_scan8x8_q0 = ff_zigzag_direct;
1607 h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
1608 h->field_scan_q0 = field_scan;
1609 h->field_scan8x8_q0 = field_scan8x8;
1610 h->field_scan8x8_cavlc_q0 = field_scan8x8_cavlc;
1612 h->zigzag_scan_q0 = h->zigzag_scan;
1613 h->zigzag_scan8x8_q0 = h->zigzag_scan8x8;
1614 h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
1615 h->field_scan_q0 = h->field_scan;
1616 h->field_scan8x8_q0 = h->field_scan8x8;
1617 h->field_scan8x8_cavlc_q0 = h->field_scan8x8_cavlc;
1621 static void field_end(H264Context *h){
1622 MpegEncContext * const s = &h->s;
1623 AVCodecContext * const avctx= s->avctx;
1626 s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
1627 s->current_picture_ptr->pict_type= s->pict_type;
1629 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1630 ff_vdpau_h264_set_reference_frames(s);
1633 ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1634 h->prev_poc_msb= h->poc_msb;
1635 h->prev_poc_lsb= h->poc_lsb;
1637 h->prev_frame_num_offset= h->frame_num_offset;
1638 h->prev_frame_num= h->frame_num;
1640 if (avctx->hwaccel) {
1641 if (avctx->hwaccel->end_frame(avctx) < 0)
1642 av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
1645 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1646 ff_vdpau_h264_picture_complete(s);
1649 * FIXME: Error handling code does not seem to support interlaced
1650 * when slices span multiple rows
1651 * The ff_er_add_slice calls don't work right for bottom
1652 * fields; they cause massive erroneous error concealing
1653 * Error marking covers both fields (top and bottom).
1654 * This causes a mismatched s->error_count
1655 * and a bad error table. Further, the error count goes to
1656 * INT_MAX when called for bottom field, because mb_y is
1657 * past end by one (callers fault) and resync_mb_y != 0
1658 * causes problems for the first MB line, too.
1669 * Replicates H264 "master" context to thread contexts.
1671 static void clone_slice(H264Context *dst, H264Context *src)
1673 memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset));
1674 dst->s.current_picture_ptr = src->s.current_picture_ptr;
1675 dst->s.current_picture = src->s.current_picture;
1676 dst->s.linesize = src->s.linesize;
1677 dst->s.uvlinesize = src->s.uvlinesize;
1678 dst->s.first_field = src->s.first_field;
1680 dst->prev_poc_msb = src->prev_poc_msb;
1681 dst->prev_poc_lsb = src->prev_poc_lsb;
1682 dst->prev_frame_num_offset = src->prev_frame_num_offset;
1683 dst->prev_frame_num = src->prev_frame_num;
1684 dst->short_ref_count = src->short_ref_count;
1686 memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref));
1687 memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref));
1688 memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
1689 memcpy(dst->ref_list, src->ref_list, sizeof(dst->ref_list));
1691 memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff));
1692 memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff));
1696 * decodes a slice header.
1697 * This will also call MPV_common_init() and frame_start() as needed.
1699 * @param h h264context
1700 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
1702 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
1704 static int decode_slice_header(H264Context *h, H264Context *h0){
1705 MpegEncContext * const s = &h->s;
1706 MpegEncContext * const s0 = &h0->s;
1707 unsigned int first_mb_in_slice;
1708 unsigned int pps_id;
1709 int num_ref_idx_active_override_flag;
1710 unsigned int slice_type, tmp, i, j;
1711 int default_ref_list_done = 0;
1712 int last_pic_structure;
1714 s->dropable= h->nal_ref_idc == 0;
1716 if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
1717 s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
1718 s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
1720 s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
1721 s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
1724 first_mb_in_slice= get_ue_golomb(&s->gb);
1726 if(first_mb_in_slice == 0){ //FIXME better field boundary detection
1727 if(h0->current_slice && FIELD_PICTURE){
1731 h0->current_slice = 0;
1732 if (!s0->first_field)
1733 s->current_picture_ptr= NULL;
1736 slice_type= get_ue_golomb_31(&s->gb);
1738 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);
1743 h->slice_type_fixed=1;
1745 h->slice_type_fixed=0;
1747 slice_type= golomb_to_pict_type[ slice_type ];
1748 if (slice_type == FF_I_TYPE
1749 || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
1750 default_ref_list_done = 1;
1752 h->slice_type= slice_type;
1753 h->slice_type_nos= slice_type & 3;
1755 s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
1756 if (s->pict_type == FF_B_TYPE && s0->last_picture_ptr == NULL) {
1757 av_log(h->s.avctx, AV_LOG_ERROR,
1758 "B picture before any references, skipping\n");
1762 pps_id= get_ue_golomb(&s->gb);
1763 if(pps_id>=MAX_PPS_COUNT){
1764 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
1767 if(!h0->pps_buffers[pps_id]) {
1768 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
1771 h->pps= *h0->pps_buffers[pps_id];
1773 if(!h0->sps_buffers[h->pps.sps_id]) {
1774 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
1777 h->sps = *h0->sps_buffers[h->pps.sps_id];
1779 if(h == h0 && h->dequant_coeff_pps != pps_id){
1780 h->dequant_coeff_pps = pps_id;
1781 init_dequant_tables(h);
1784 s->mb_width= h->sps.mb_width;
1785 s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
1787 h->b_stride= s->mb_width*4;
1788 h->b8_stride= s->mb_width*2;
1790 s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
1791 if(h->sps.frame_mbs_only_flag)
1792 s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
1794 s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 3);
1796 if (s->context_initialized
1797 && ( s->width != s->avctx->width || s->height != s->avctx->height)) {
1799 return -1; // width / height changed during parallelized decoding
1801 flush_dpb(s->avctx);
1804 if (!s->context_initialized) {
1806 return -1; // we cant (re-)initialize context during parallel decoding
1808 avcodec_set_dimensions(s->avctx, s->width, s->height);
1809 s->avctx->sample_aspect_ratio= h->sps.sar;
1810 if(!s->avctx->sample_aspect_ratio.den)
1811 s->avctx->sample_aspect_ratio.den = 1;
1813 if(h->sps.video_signal_type_present_flag){
1814 s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
1815 if(h->sps.colour_description_present_flag){
1816 s->avctx->color_primaries = h->sps.color_primaries;
1817 s->avctx->color_trc = h->sps.color_trc;
1818 s->avctx->colorspace = h->sps.colorspace;
1822 if(h->sps.timing_info_present_flag){
1823 s->avctx->time_base= (AVRational){h->sps.num_units_in_tick, h->sps.time_scale};
1824 if(h->x264_build > 0 && h->x264_build < 44)
1825 s->avctx->time_base.den *= 2;
1826 av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
1827 s->avctx->time_base.num, s->avctx->time_base.den, 1<<30);
1829 s->avctx->pix_fmt = s->avctx->get_format(s->avctx, s->avctx->codec->pix_fmts);
1830 s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
1832 if (MPV_common_init(s) < 0)
1835 h->prev_interlaced_frame = 1;
1837 init_scan_tables(h);
1838 ff_h264_alloc_tables(h);
1840 for(i = 1; i < s->avctx->thread_count; i++) {
1842 c = h->thread_context[i] = av_malloc(sizeof(H264Context));
1843 memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
1844 memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
1847 init_scan_tables(c);
1851 for(i = 0; i < s->avctx->thread_count; i++)
1852 if(context_init(h->thread_context[i]) < 0)
1856 h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
1859 h->mb_aff_frame = 0;
1860 last_pic_structure = s0->picture_structure;
1861 if(h->sps.frame_mbs_only_flag){
1862 s->picture_structure= PICT_FRAME;
1864 if(get_bits1(&s->gb)) { //field_pic_flag
1865 s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
1867 s->picture_structure= PICT_FRAME;
1868 h->mb_aff_frame = h->sps.mb_aff;
1871 h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
1873 if(h0->current_slice == 0){
1874 while(h->frame_num != h->prev_frame_num &&
1875 h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
1876 av_log(NULL, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
1877 if (ff_h264_frame_start(h) < 0)
1879 h->prev_frame_num++;
1880 h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
1881 s->current_picture_ptr->frame_num= h->prev_frame_num;
1882 ff_h264_execute_ref_pic_marking(h, NULL, 0);
1885 /* See if we have a decoded first field looking for a pair... */
1886 if (s0->first_field) {
1887 assert(s0->current_picture_ptr);
1888 assert(s0->current_picture_ptr->data[0]);
1889 assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
1891 /* figure out if we have a complementary field pair */
1892 if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
1894 * Previous field is unmatched. Don't display it, but let it
1895 * remain for reference if marked as such.
1897 s0->current_picture_ptr = NULL;
1898 s0->first_field = FIELD_PICTURE;
1901 if (h->nal_ref_idc &&
1902 s0->current_picture_ptr->reference &&
1903 s0->current_picture_ptr->frame_num != h->frame_num) {
1905 * This and previous field were reference, but had
1906 * different frame_nums. Consider this field first in
1907 * pair. Throw away previous field except for reference
1910 s0->first_field = 1;
1911 s0->current_picture_ptr = NULL;
1914 /* Second field in complementary pair */
1915 s0->first_field = 0;
1920 /* Frame or first field in a potentially complementary pair */
1921 assert(!s0->current_picture_ptr);
1922 s0->first_field = FIELD_PICTURE;
1925 if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) {
1926 s0->first_field = 0;
1933 s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
1935 assert(s->mb_num == s->mb_width * s->mb_height);
1936 if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
1937 first_mb_in_slice >= s->mb_num){
1938 av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
1941 s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
1942 s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
1943 if (s->picture_structure == PICT_BOTTOM_FIELD)
1944 s->resync_mb_y = s->mb_y = s->mb_y + 1;
1945 assert(s->mb_y < s->mb_height);
1947 if(s->picture_structure==PICT_FRAME){
1948 h->curr_pic_num= h->frame_num;
1949 h->max_pic_num= 1<< h->sps.log2_max_frame_num;
1951 h->curr_pic_num= 2*h->frame_num + 1;
1952 h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
1955 if(h->nal_unit_type == NAL_IDR_SLICE){
1956 get_ue_golomb(&s->gb); /* idr_pic_id */
1959 if(h->sps.poc_type==0){
1960 h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
1962 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
1963 h->delta_poc_bottom= get_se_golomb(&s->gb);
1967 if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
1968 h->delta_poc[0]= get_se_golomb(&s->gb);
1970 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
1971 h->delta_poc[1]= get_se_golomb(&s->gb);
1976 if(h->pps.redundant_pic_cnt_present){
1977 h->redundant_pic_count= get_ue_golomb(&s->gb);
1980 //set defaults, might be overridden a few lines later
1981 h->ref_count[0]= h->pps.ref_count[0];
1982 h->ref_count[1]= h->pps.ref_count[1];
1984 if(h->slice_type_nos != FF_I_TYPE){
1985 if(h->slice_type_nos == FF_B_TYPE){
1986 h->direct_spatial_mv_pred= get_bits1(&s->gb);
1988 num_ref_idx_active_override_flag= get_bits1(&s->gb);
1990 if(num_ref_idx_active_override_flag){
1991 h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
1992 if(h->slice_type_nos==FF_B_TYPE)
1993 h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
1995 if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
1996 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
1997 h->ref_count[0]= h->ref_count[1]= 1;
2001 if(h->slice_type_nos == FF_B_TYPE)
2008 if(!default_ref_list_done){
2009 ff_h264_fill_default_ref_list(h);
2012 if(h->slice_type_nos!=FF_I_TYPE && ff_h264_decode_ref_pic_list_reordering(h) < 0)
2015 if(h->slice_type_nos!=FF_I_TYPE){
2016 s->last_picture_ptr= &h->ref_list[0][0];
2017 ff_copy_picture(&s->last_picture, s->last_picture_ptr);
2019 if(h->slice_type_nos==FF_B_TYPE){
2020 s->next_picture_ptr= &h->ref_list[1][0];
2021 ff_copy_picture(&s->next_picture, s->next_picture_ptr);
2024 if( (h->pps.weighted_pred && h->slice_type_nos == FF_P_TYPE )
2025 || (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== FF_B_TYPE ) )
2026 pred_weight_table(h);
2027 else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== FF_B_TYPE)
2028 implicit_weight_table(h);
2031 for (i = 0; i < 2; i++) {
2032 h->luma_weight_flag[i] = 0;
2033 h->chroma_weight_flag[i] = 0;
2038 ff_h264_decode_ref_pic_marking(h0, &s->gb);
2041 ff_h264_fill_mbaff_ref_list(h);
2043 if(h->slice_type_nos==FF_B_TYPE && !h->direct_spatial_mv_pred)
2044 ff_h264_direct_dist_scale_factor(h);
2045 ff_h264_direct_ref_list_init(h);
2047 if( h->slice_type_nos != FF_I_TYPE && h->pps.cabac ){
2048 tmp = get_ue_golomb_31(&s->gb);
2050 av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
2053 h->cabac_init_idc= tmp;
2056 h->last_qscale_diff = 0;
2057 tmp = h->pps.init_qp + get_se_golomb(&s->gb);
2059 av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
2063 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2064 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2065 //FIXME qscale / qp ... stuff
2066 if(h->slice_type == FF_SP_TYPE){
2067 get_bits1(&s->gb); /* sp_for_switch_flag */
2069 if(h->slice_type==FF_SP_TYPE || h->slice_type == FF_SI_TYPE){
2070 get_se_golomb(&s->gb); /* slice_qs_delta */
2073 h->deblocking_filter = 1;
2074 h->slice_alpha_c0_offset = 0;
2075 h->slice_beta_offset = 0;
2076 if( h->pps.deblocking_filter_parameters_present ) {
2077 tmp= get_ue_golomb_31(&s->gb);
2079 av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
2082 h->deblocking_filter= tmp;
2083 if(h->deblocking_filter < 2)
2084 h->deblocking_filter^= 1; // 1<->0
2086 if( h->deblocking_filter ) {
2087 h->slice_alpha_c0_offset = get_se_golomb(&s->gb) << 1;
2088 h->slice_beta_offset = get_se_golomb(&s->gb) << 1;
2092 if( s->avctx->skip_loop_filter >= AVDISCARD_ALL
2093 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != FF_I_TYPE)
2094 ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR && h->slice_type_nos == FF_B_TYPE)
2095 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2096 h->deblocking_filter= 0;
2098 if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
2099 if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
2100 /* Cheat slightly for speed:
2101 Do not bother to deblock across slices. */
2102 h->deblocking_filter = 2;
2104 h0->max_contexts = 1;
2105 if(!h0->single_decode_warning) {
2106 av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
2107 h0->single_decode_warning = 1;
2110 return 1; // deblocking switched inside frame
2113 h->qp_thresh= 15 - 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]);
2116 if( h->pps.num_slice_groups > 1 && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
2117 slice_group_change_cycle= get_bits(&s->gb, ?);
2120 h0->last_slice_type = slice_type;
2121 h->slice_num = ++h0->current_slice;
2122 if(h->slice_num >= MAX_SLICES){
2123 av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
2127 int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
2131 ref2frm[i+2]= 4*h->ref_list[j][i].frame_num
2132 +(h->ref_list[j][i].reference&3);
2135 for(i=16; i<48; i++)
2136 ref2frm[i+4]= 4*h->ref_list[j][i].frame_num
2137 +(h->ref_list[j][i].reference&3);
2140 h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
2141 h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
2143 s->avctx->refs= h->sps.ref_frame_count;
2145 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
2146 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",
2148 (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
2150 av_get_pict_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
2151 pps_id, h->frame_num,
2152 s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
2153 h->ref_count[0], h->ref_count[1],
2155 h->deblocking_filter, h->slice_alpha_c0_offset/2, h->slice_beta_offset/2,
2157 h->use_weight==1 && h->use_weight_chroma ? "c" : "",
2158 h->slice_type == FF_B_TYPE ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
2165 int ff_h264_get_slice_type(H264Context *h)
2167 switch (h->slice_type) {
2168 case FF_P_TYPE: return 0;
2169 case FF_B_TYPE: return 1;
2170 case FF_I_TYPE: return 2;
2171 case FF_SP_TYPE: return 3;
2172 case FF_SI_TYPE: return 4;
2177 static int decode_slice(struct AVCodecContext *avctx, void *arg){
2178 H264Context *h = *(void**)arg;
2179 MpegEncContext * const s = &h->s;
2180 const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
2184 h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
2185 (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
2187 if( h->pps.cabac ) {
2189 align_get_bits( &s->gb );
2192 ff_init_cabac_states( &h->cabac);
2193 ff_init_cabac_decoder( &h->cabac,
2194 s->gb.buffer + get_bits_count(&s->gb)/8,
2195 (get_bits_left(&s->gb) + 7)/8);
2197 ff_h264_init_cabac_states(h);
2201 int ret = ff_h264_decode_mb_cabac(h);
2203 //STOP_TIMER("decode_mb_cabac")
2205 if(ret>=0) ff_h264_hl_decode_mb(h);
2207 if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
2210 ret = ff_h264_decode_mb_cabac(h);
2212 if(ret>=0) ff_h264_hl_decode_mb(h);
2215 eos = get_cabac_terminate( &h->cabac );
2217 if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
2218 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);
2219 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);
2223 if( ++s->mb_x >= s->mb_width ) {
2225 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2227 if(FIELD_OR_MBAFF_PICTURE) {
2232 if( eos || s->mb_y >= s->mb_height ) {
2233 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2234 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);
2241 int ret = ff_h264_decode_mb_cavlc(h);
2243 if(ret>=0) ff_h264_hl_decode_mb(h);
2245 if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
2247 ret = ff_h264_decode_mb_cavlc(h);
2249 if(ret>=0) ff_h264_hl_decode_mb(h);
2254 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2255 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);
2260 if(++s->mb_x >= s->mb_width){
2262 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2264 if(FIELD_OR_MBAFF_PICTURE) {
2267 if(s->mb_y >= s->mb_height){
2268 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2270 if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
2271 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);
2275 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);
2282 if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
2283 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2284 if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
2285 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);
2289 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);
2298 for(;s->mb_y < s->mb_height; s->mb_y++){
2299 for(;s->mb_x < s->mb_width; s->mb_x++){
2300 int ret= decode_mb(h);
2302 ff_h264_hl_decode_mb(h);
2305 av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2306 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);
2311 if(++s->mb_x >= s->mb_width){
2313 if(++s->mb_y >= s->mb_height){
2314 if(get_bits_count(s->gb) == s->gb.size_in_bits){
2315 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);
2319 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);
2326 if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
2327 if(get_bits_count(s->gb) == s->gb.size_in_bits){
2328 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);
2332 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);
2339 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2342 return -1; //not reached
2346 * Call decode_slice() for each context.
2348 * @param h h264 master context
2349 * @param context_count number of contexts to execute
2351 static void execute_decode_slices(H264Context *h, int context_count){
2352 MpegEncContext * const s = &h->s;
2353 AVCodecContext * const avctx= s->avctx;
2357 if (s->avctx->hwaccel)
2359 if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2361 if(context_count == 1) {
2362 decode_slice(avctx, &h);
2364 for(i = 1; i < context_count; i++) {
2365 hx = h->thread_context[i];
2366 hx->s.error_recognition = avctx->error_recognition;
2367 hx->s.error_count = 0;
2370 avctx->execute(avctx, (void *)decode_slice,
2371 h->thread_context, NULL, context_count, sizeof(void*));
2373 /* pull back stuff from slices to master context */
2374 hx = h->thread_context[context_count - 1];
2375 s->mb_x = hx->s.mb_x;
2376 s->mb_y = hx->s.mb_y;
2377 s->dropable = hx->s.dropable;
2378 s->picture_structure = hx->s.picture_structure;
2379 for(i = 1; i < context_count; i++)
2380 h->s.error_count += h->thread_context[i]->s.error_count;
2385 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
2386 MpegEncContext * const s = &h->s;
2387 AVCodecContext * const avctx= s->avctx;
2389 H264Context *hx; ///< thread context
2390 int context_count = 0;
2391 int next_avc= h->is_avc ? 0 : buf_size;
2393 h->max_contexts = avctx->thread_count;
2396 for(i=0; i<50; i++){
2397 av_log(NULL, AV_LOG_ERROR,"%02X ", buf[i]);
2400 if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
2401 h->current_slice = 0;
2402 if (!s->first_field)
2403 s->current_picture_ptr= NULL;
2404 ff_h264_reset_sei(h);
2415 if(buf_index >= next_avc) {
2416 if(buf_index >= buf_size) break;
2418 for(i = 0; i < h->nal_length_size; i++)
2419 nalsize = (nalsize << 8) | buf[buf_index++];
2420 if(nalsize <= 1 || nalsize > buf_size - buf_index){
2425 av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
2429 next_avc= buf_index + nalsize;
2431 // start code prefix search
2432 for(; buf_index + 3 < next_avc; buf_index++){
2433 // This should always succeed in the first iteration.
2434 if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
2438 if(buf_index+3 >= buf_size) break;
2441 if(buf_index >= next_avc) continue;
2444 hx = h->thread_context[context_count];
2446 ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index);
2447 if (ptr==NULL || dst_length < 0){
2450 while(ptr[dst_length - 1] == 0 && dst_length > 0)
2452 bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
2454 if(s->avctx->debug&FF_DEBUG_STARTCODE){
2455 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);
2458 if (h->is_avc && (nalsize != consumed) && nalsize){
2459 av_log(h->s.avctx, AV_LOG_DEBUG, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
2462 buf_index += consumed;
2464 if( (s->hurry_up == 1 && h->nal_ref_idc == 0) //FIXME do not discard SEI id
2465 ||(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2470 switch(hx->nal_unit_type){
2472 if (h->nal_unit_type != NAL_IDR_SLICE) {
2473 av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
2476 idr(h); //FIXME ensure we don't loose some frames if there is reordering
2478 init_get_bits(&hx->s.gb, ptr, bit_length);
2480 hx->inter_gb_ptr= &hx->s.gb;
2481 hx->s.data_partitioning = 0;
2483 if((err = decode_slice_header(hx, h)))
2486 if (s->avctx->hwaccel && h->current_slice == 1) {
2487 if (s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
2491 s->current_picture_ptr->key_frame |=
2492 (hx->nal_unit_type == NAL_IDR_SLICE) ||
2493 (h->sei_recovery_frame_cnt >= 0);
2494 if(hx->redundant_pic_count==0 && hx->s.hurry_up < 5
2495 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2496 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=FF_B_TYPE)
2497 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2498 && avctx->skip_frame < AVDISCARD_ALL){
2499 if(avctx->hwaccel) {
2500 if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0)
2503 if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
2504 static const uint8_t start_code[] = {0x00, 0x00, 0x01};
2505 ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
2506 ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
2512 init_get_bits(&hx->s.gb, ptr, bit_length);
2514 hx->inter_gb_ptr= NULL;
2516 if ((err = decode_slice_header(hx, h)) < 0)
2519 hx->s.data_partitioning = 1;
2523 init_get_bits(&hx->intra_gb, ptr, bit_length);
2524 hx->intra_gb_ptr= &hx->intra_gb;
2527 init_get_bits(&hx->inter_gb, ptr, bit_length);
2528 hx->inter_gb_ptr= &hx->inter_gb;
2530 if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
2531 && s->context_initialized
2533 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2534 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=FF_B_TYPE)
2535 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==FF_I_TYPE)
2536 && avctx->skip_frame < AVDISCARD_ALL)
2540 init_get_bits(&s->gb, ptr, bit_length);
2541 ff_h264_decode_sei(h);
2544 init_get_bits(&s->gb, ptr, bit_length);
2545 ff_h264_decode_seq_parameter_set(h);
2547 if(s->flags& CODEC_FLAG_LOW_DELAY)
2550 if(avctx->has_b_frames < 2)
2551 avctx->has_b_frames= !s->low_delay;
2554 init_get_bits(&s->gb, ptr, bit_length);
2556 ff_h264_decode_picture_parameter_set(h, bit_length);
2560 case NAL_END_SEQUENCE:
2561 case NAL_END_STREAM:
2562 case NAL_FILLER_DATA:
2564 case NAL_AUXILIARY_SLICE:
2567 av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", hx->nal_unit_type, bit_length);
2570 if(context_count == h->max_contexts) {
2571 execute_decode_slices(h, context_count);
2576 av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
2578 /* Slice could not be decoded in parallel mode, copy down
2579 * NAL unit stuff to context 0 and restart. Note that
2580 * rbsp_buffer is not transferred, but since we no longer
2581 * run in parallel mode this should not be an issue. */
2582 h->nal_unit_type = hx->nal_unit_type;
2583 h->nal_ref_idc = hx->nal_ref_idc;
2589 execute_decode_slices(h, context_count);
2594 * returns the number of bytes consumed for building the current frame
2596 static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
2597 if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
2598 if(pos+10>buf_size) pos=buf_size; // oops ;)
2603 static int decode_frame(AVCodecContext *avctx,
2604 void *data, int *data_size,
2607 const uint8_t *buf = avpkt->data;
2608 int buf_size = avpkt->size;
2609 H264Context *h = avctx->priv_data;
2610 MpegEncContext *s = &h->s;
2611 AVFrame *pict = data;
2614 s->flags= avctx->flags;
2615 s->flags2= avctx->flags2;
2617 /* end of stream, output what is still in the buffers */
2618 if (buf_size == 0) {
2622 //FIXME factorize this with the output code below
2623 out = h->delayed_pic[0];
2625 for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2626 if(h->delayed_pic[i]->poc < out->poc){
2627 out = h->delayed_pic[i];
2631 for(i=out_idx; h->delayed_pic[i]; i++)
2632 h->delayed_pic[i] = h->delayed_pic[i+1];
2635 *data_size = sizeof(AVFrame);
2636 *pict= *(AVFrame*)out;
2642 if(h->is_avc && !h->got_avcC) {
2643 int i, cnt, nalsize;
2644 unsigned char *p = avctx->extradata;
2645 if(avctx->extradata_size < 7) {
2646 av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
2650 av_log(avctx, AV_LOG_ERROR, "Unknown avcC version %d\n", *p);
2653 /* sps and pps in the avcC always have length coded with 2 bytes,
2654 so put a fake nal_length_size = 2 while parsing them */
2655 h->nal_length_size = 2;
2656 // Decode sps from avcC
2657 cnt = *(p+5) & 0x1f; // Number of sps
2659 for (i = 0; i < cnt; i++) {
2660 nalsize = AV_RB16(p) + 2;
2661 if(decode_nal_units(h, p, nalsize) < 0) {
2662 av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
2667 // Decode pps from avcC
2668 cnt = *(p++); // Number of pps
2669 for (i = 0; i < cnt; i++) {
2670 nalsize = AV_RB16(p) + 2;
2671 if(decode_nal_units(h, p, nalsize) != nalsize) {
2672 av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
2677 // Now store right nal length size, that will be use to parse all other nals
2678 h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
2679 // Do not reparse avcC
2683 if(!h->got_avcC && !h->is_avc && s->avctx->extradata_size){
2684 if(decode_nal_units(h, s->avctx->extradata, s->avctx->extradata_size) < 0)
2689 buf_index=decode_nal_units(h, buf, buf_size);
2693 if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
2694 if (avctx->skip_frame >= AVDISCARD_NONREF || s->hurry_up) return 0;
2695 av_log(avctx, AV_LOG_ERROR, "no frame!\n");
2699 if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
2700 Picture *out = s->current_picture_ptr;
2701 Picture *cur = s->current_picture_ptr;
2702 int i, pics, out_of_order, out_idx;
2706 if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
2707 /* Wait for second field. */
2711 cur->interlaced_frame = 0;
2712 cur->repeat_pict = 0;
2714 /* Signal interlacing information externally. */
2715 /* Prioritize picture timing SEI information over used decoding process if it exists. */
2717 if(h->sps.pic_struct_present_flag){
2718 switch (h->sei_pic_struct)
2720 case SEI_PIC_STRUCT_FRAME:
2722 case SEI_PIC_STRUCT_TOP_FIELD:
2723 case SEI_PIC_STRUCT_BOTTOM_FIELD:
2724 cur->interlaced_frame = 1;
2726 case SEI_PIC_STRUCT_TOP_BOTTOM:
2727 case SEI_PIC_STRUCT_BOTTOM_TOP:
2728 if (FIELD_OR_MBAFF_PICTURE)
2729 cur->interlaced_frame = 1;
2731 // try to flag soft telecine progressive
2732 cur->interlaced_frame = h->prev_interlaced_frame;
2734 case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
2735 case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
2736 // Signal the possibility of telecined film externally (pic_struct 5,6)
2737 // From these hints, let the applications decide if they apply deinterlacing.
2738 cur->repeat_pict = 1;
2740 case SEI_PIC_STRUCT_FRAME_DOUBLING:
2741 // Force progressive here, as doubling interlaced frame is a bad idea.
2742 cur->repeat_pict = 2;
2744 case SEI_PIC_STRUCT_FRAME_TRIPLING:
2745 cur->repeat_pict = 4;
2749 if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
2750 cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0;
2752 /* Derive interlacing flag from used decoding process. */
2753 cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
2755 h->prev_interlaced_frame = cur->interlaced_frame;
2757 if (cur->field_poc[0] != cur->field_poc[1]){
2758 /* Derive top_field_first from field pocs. */
2759 cur->top_field_first = cur->field_poc[0] < cur->field_poc[1];
2761 if(cur->interlaced_frame || h->sps.pic_struct_present_flag){
2762 /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */
2763 if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM
2764 || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
2765 cur->top_field_first = 1;
2767 cur->top_field_first = 0;
2769 /* Most likely progressive */
2770 cur->top_field_first = 0;
2774 //FIXME do something with unavailable reference frames
2776 /* Sort B-frames into display order */
2778 if(h->sps.bitstream_restriction_flag
2779 && s->avctx->has_b_frames < h->sps.num_reorder_frames){
2780 s->avctx->has_b_frames = h->sps.num_reorder_frames;
2784 if( s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT
2785 && !h->sps.bitstream_restriction_flag){
2786 s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT;
2791 while(h->delayed_pic[pics]) pics++;
2793 assert(pics <= MAX_DELAYED_PIC_COUNT);
2795 h->delayed_pic[pics++] = cur;
2796 if(cur->reference == 0)
2797 cur->reference = DELAYED_PIC_REF;
2799 out = h->delayed_pic[0];
2801 for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
2802 if(h->delayed_pic[i]->poc < out->poc){
2803 out = h->delayed_pic[i];
2806 if(s->avctx->has_b_frames == 0 && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset))
2807 h->outputed_poc= INT_MIN;
2808 out_of_order = out->poc < h->outputed_poc;
2810 if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames)
2812 else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT)
2814 ((h->outputed_poc != INT_MIN && out->poc > h->outputed_poc + 2)
2815 || cur->pict_type == FF_B_TYPE)))
2818 s->avctx->has_b_frames++;
2821 if(out_of_order || pics > s->avctx->has_b_frames){
2822 out->reference &= ~DELAYED_PIC_REF;
2823 for(i=out_idx; h->delayed_pic[i]; i++)
2824 h->delayed_pic[i] = h->delayed_pic[i+1];
2826 if(!out_of_order && pics > s->avctx->has_b_frames){
2827 *data_size = sizeof(AVFrame);
2829 if(out_idx==0 && h->delayed_pic[0] && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) {
2830 h->outputed_poc = INT_MIN;
2832 h->outputed_poc = out->poc;
2833 *pict= *(AVFrame*)out;
2835 av_log(avctx, AV_LOG_DEBUG, "no picture\n");
2840 assert(pict->data[0] || !*data_size);
2841 ff_print_debug_info(s, pict);
2842 //printf("out %d\n", (int)pict->data[0]);
2844 return get_consumed_bytes(s, buf_index, buf_size);
2847 static inline void fill_mb_avail(H264Context *h){
2848 MpegEncContext * const s = &h->s;
2849 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2852 h->mb_avail[0]= s->mb_x && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num;
2853 h->mb_avail[1]= h->slice_table[mb_xy - s->mb_stride ] == h->slice_num;
2854 h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num;
2860 h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
2861 h->mb_avail[4]= 1; //FIXME move out
2862 h->mb_avail[5]= 0; //FIXME move out
2870 #define SIZE (COUNT*40)
2876 // int int_temp[10000];
2878 AVCodecContext avctx;
2880 dsputil_init(&dsp, &avctx);
2882 init_put_bits(&pb, temp, SIZE);
2883 printf("testing unsigned exp golomb\n");
2884 for(i=0; i<COUNT; i++){
2886 set_ue_golomb(&pb, i);
2887 STOP_TIMER("set_ue_golomb");
2889 flush_put_bits(&pb);
2891 init_get_bits(&gb, temp, 8*SIZE);
2892 for(i=0; i<COUNT; i++){
2895 s= show_bits(&gb, 24);
2898 j= get_ue_golomb(&gb);
2900 printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
2903 STOP_TIMER("get_ue_golomb");
2907 init_put_bits(&pb, temp, SIZE);
2908 printf("testing signed exp golomb\n");
2909 for(i=0; i<COUNT; i++){
2911 set_se_golomb(&pb, i - COUNT/2);
2912 STOP_TIMER("set_se_golomb");
2914 flush_put_bits(&pb);
2916 init_get_bits(&gb, temp, 8*SIZE);
2917 for(i=0; i<COUNT; i++){
2920 s= show_bits(&gb, 24);
2923 j= get_se_golomb(&gb);
2924 if(j != i - COUNT/2){
2925 printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
2928 STOP_TIMER("get_se_golomb");
2932 printf("testing 4x4 (I)DCT\n");
2935 uint8_t src[16], ref[16];
2936 uint64_t error= 0, max_error=0;
2938 for(i=0; i<COUNT; i++){
2940 // printf("%d %d %d\n", r1, r2, (r2-r1)*16);
2941 for(j=0; j<16; j++){
2942 ref[j]= random()%255;
2943 src[j]= random()%255;
2946 h264_diff_dct_c(block, src, ref, 4);
2949 for(j=0; j<16; j++){
2950 // printf("%d ", block[j]);
2951 block[j]= block[j]*4;
2952 if(j&1) block[j]= (block[j]*4 + 2)/5;
2953 if(j&4) block[j]= (block[j]*4 + 2)/5;
2957 s->dsp.h264_idct_add(ref, block, 4);
2958 /* for(j=0; j<16; j++){
2959 printf("%d ", ref[j]);
2963 for(j=0; j<16; j++){
2964 int diff= FFABS(src[j] - ref[j]);
2967 max_error= FFMAX(max_error, diff);
2970 printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
2971 printf("testing quantizer\n");
2972 for(qp=0; qp<52; qp++){
2974 src1_block[i]= src2_block[i]= random()%255;
2977 printf("Testing NAL layer\n");
2979 uint8_t bitstream[COUNT];
2980 uint8_t nal[COUNT*2];
2982 memset(&h, 0, sizeof(H264Context));
2984 for(i=0; i<COUNT; i++){
2992 for(j=0; j<COUNT; j++){
2993 bitstream[j]= (random() % 255) + 1;
2996 for(j=0; j<zeros; j++){
2997 int pos= random() % COUNT;
2998 while(bitstream[pos] == 0){
3007 nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
3009 printf("encoding failed\n");
3013 out= ff_h264_decode_nal(&h, nal, &out_length, &consumed, nal_length);
3017 if(out_length != COUNT){
3018 printf("incorrect length %d %d\n", out_length, COUNT);
3022 if(consumed != nal_length){
3023 printf("incorrect consumed length %d %d\n", nal_length, consumed);
3027 if(memcmp(bitstream, out, COUNT)){
3028 printf("mismatch\n");
3034 printf("Testing RBSP\n");
3042 av_cold void ff_h264_free_context(H264Context *h)
3046 free_tables(h); //FIXME cleanup init stuff perhaps
3048 for(i = 0; i < MAX_SPS_COUNT; i++)
3049 av_freep(h->sps_buffers + i);
3051 for(i = 0; i < MAX_PPS_COUNT; i++)
3052 av_freep(h->pps_buffers + i);
3055 av_cold int ff_h264_decode_end(AVCodecContext *avctx)
3057 H264Context *h = avctx->priv_data;
3058 MpegEncContext *s = &h->s;
3060 ff_h264_free_context(h);
3064 // memset(h, 0, sizeof(H264Context));
3070 AVCodec h264_decoder = {
3074 sizeof(H264Context),
3075 ff_h264_decode_init,
3079 /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY,
3081 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
3082 .pix_fmts= ff_hwaccel_pixfmt_list_420,
3085 #if CONFIG_H264_VDPAU_DECODER
3086 AVCodec h264_vdpau_decoder = {
3090 sizeof(H264Context),
3091 ff_h264_decode_init,
3095 CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3097 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
3098 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_VDPAU_H264, PIX_FMT_NONE},