2 * H.26L/H.264/AVC/JVT/14496-10/... decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of Libav.
7 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * H.264 / AVC / MPEG4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
28 #include "libavutil/imgutils.h"
32 #include "mpegvideo.h"
35 #include "h264_mvpred.h"
38 #include "rectangle.h"
40 #include "vdpau_internal.h"
41 #include "libavutil/avassert.h"
48 static const uint8_t rem6[QP_MAX_NUM+1]={
49 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3,
52 static const uint8_t div6[QP_MAX_NUM+1]={
53 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9,10,10,10,10,
56 static const enum PixelFormat hwaccel_pixfmt_list_h264_jpeg_420[] = {
63 void ff_h264_write_back_intra_pred_mode(H264Context *h){
64 int8_t *mode= h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
66 AV_COPY32(mode, h->intra4x4_pred_mode_cache + 4 + 8*4);
67 mode[4]= h->intra4x4_pred_mode_cache[7+8*3];
68 mode[5]= h->intra4x4_pred_mode_cache[7+8*2];
69 mode[6]= h->intra4x4_pred_mode_cache[7+8*1];
73 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
75 int ff_h264_check_intra4x4_pred_mode(H264Context *h){
76 MpegEncContext * const s = &h->s;
77 static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
78 static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
81 if(!(h->top_samples_available&0x8000)){
83 int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
85 av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
88 h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
93 if((h->left_samples_available&0x8888)!=0x8888){
94 static const int mask[4]={0x8000,0x2000,0x80,0x20};
96 if(!(h->left_samples_available&mask[i])){
97 int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
99 av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y);
102 h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
109 } //FIXME cleanup like ff_h264_check_intra_pred_mode
112 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
114 int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
115 MpegEncContext * const s = &h->s;
116 static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
117 static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
120 av_log(h->s.avctx, AV_LOG_ERROR, "out of range intra chroma pred mode at %d %d\n", s->mb_x, s->mb_y);
124 if(!(h->top_samples_available&0x8000)){
127 av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
132 if((h->left_samples_available&0x8080) != 0x8080){
134 if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
135 mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
138 av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y);
146 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
151 // src[0]&0x80; //forbidden bit
152 h->nal_ref_idc= src[0]>>5;
153 h->nal_unit_type= src[0]&0x1F;
157 #if HAVE_FAST_UNALIGNED
160 for(i=0; i+1<length; i+=9){
161 if(!((~AV_RN64A(src+i) & (AV_RN64A(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
164 for(i=0; i+1<length; i+=5){
165 if(!((~AV_RN32A(src+i) & (AV_RN32A(src+i) - 0x01000101U)) & 0x80008080U))
168 if(i>0 && !src[i]) i--;
172 for(i=0; i+1<length; i+=2){
174 if(i>0 && src[i-1]==0) i--;
176 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
178 /* startcode, so we must be past the end */
186 if(i>=length-1){ //no escaped 0
188 *consumed= length+1; //+1 for the header
192 bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
193 av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
194 dst= h->rbsp_buffer[bufidx];
200 //printf("decoding esc\n");
204 //remove escapes (very rare 1:2^22)
206 dst[di++]= src[si++];
207 dst[di++]= src[si++];
208 }else if(src[si]==0 && src[si+1]==0){
209 if(src[si+2]==3){ //escape
214 }else //next start code
218 dst[di++]= src[si++];
221 dst[di++]= src[si++];
224 memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
227 *consumed= si + 1;//+1 for the header
228 //FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
233 * Identify the exact end of the bitstream
234 * @return the length of the trailing, or 0 if damaged
236 static int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
240 tprintf(h->s.avctx, "rbsp trailing %X\n", v);
249 static inline int get_lowest_part_list_y(H264Context *h, Picture *pic, int n, int height,
250 int y_offset, int list){
251 int raw_my= h->mv_cache[list][ scan8[n] ][1];
252 int filter_height= (raw_my&3) ? 2 : 0;
253 int full_my= (raw_my>>2) + y_offset;
254 int top = full_my - filter_height, bottom = full_my + height + filter_height;
256 return FFMAX(abs(top), bottom);
259 static inline void get_lowest_part_y(H264Context *h, int refs[2][48], int n, int height,
260 int y_offset, int list0, int list1, int *nrefs){
261 MpegEncContext * const s = &h->s;
264 y_offset += 16*(s->mb_y >> MB_FIELD);
267 int ref_n = h->ref_cache[0][ scan8[n] ];
268 Picture *ref= &h->ref_list[0][ref_n];
270 // Error resilience puts the current picture in the ref list.
271 // Don't try to wait on these as it will cause a deadlock.
272 // Fields can wait on each other, though.
273 if(ref->thread_opaque != s->current_picture.thread_opaque ||
274 (ref->reference&3) != s->picture_structure) {
275 my = get_lowest_part_list_y(h, ref, n, height, y_offset, 0);
276 if (refs[0][ref_n] < 0) nrefs[0] += 1;
277 refs[0][ref_n] = FFMAX(refs[0][ref_n], my);
282 int ref_n = h->ref_cache[1][ scan8[n] ];
283 Picture *ref= &h->ref_list[1][ref_n];
285 if(ref->thread_opaque != s->current_picture.thread_opaque ||
286 (ref->reference&3) != s->picture_structure) {
287 my = get_lowest_part_list_y(h, ref, n, height, y_offset, 1);
288 if (refs[1][ref_n] < 0) nrefs[1] += 1;
289 refs[1][ref_n] = FFMAX(refs[1][ref_n], my);
295 * Wait until all reference frames are available for MC operations.
297 * @param h the H264 context
299 static void await_references(H264Context *h){
300 MpegEncContext * const s = &h->s;
301 const int mb_xy= h->mb_xy;
302 const int mb_type= s->current_picture.mb_type[mb_xy];
307 memset(refs, -1, sizeof(refs));
309 if(IS_16X16(mb_type)){
310 get_lowest_part_y(h, refs, 0, 16, 0,
311 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
312 }else if(IS_16X8(mb_type)){
313 get_lowest_part_y(h, refs, 0, 8, 0,
314 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
315 get_lowest_part_y(h, refs, 8, 8, 8,
316 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
317 }else if(IS_8X16(mb_type)){
318 get_lowest_part_y(h, refs, 0, 16, 0,
319 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
320 get_lowest_part_y(h, refs, 4, 16, 0,
321 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
325 assert(IS_8X8(mb_type));
328 const int sub_mb_type= h->sub_mb_type[i];
330 int y_offset= (i&2)<<2;
332 if(IS_SUB_8X8(sub_mb_type)){
333 get_lowest_part_y(h, refs, n , 8, y_offset,
334 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
335 }else if(IS_SUB_8X4(sub_mb_type)){
336 get_lowest_part_y(h, refs, n , 4, y_offset,
337 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
338 get_lowest_part_y(h, refs, n+2, 4, y_offset+4,
339 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
340 }else if(IS_SUB_4X8(sub_mb_type)){
341 get_lowest_part_y(h, refs, n , 8, y_offset,
342 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
343 get_lowest_part_y(h, refs, n+1, 8, y_offset,
344 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
347 assert(IS_SUB_4X4(sub_mb_type));
349 int sub_y_offset= y_offset + 2*(j&2);
350 get_lowest_part_y(h, refs, n+j, 4, sub_y_offset,
351 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1), nrefs);
357 for(list=h->list_count-1; list>=0; list--){
358 for(ref=0; ref<48 && nrefs[list]; ref++){
359 int row = refs[list][ref];
361 Picture *ref_pic = &h->ref_list[list][ref];
362 int ref_field = ref_pic->reference - 1;
363 int ref_field_picture = ref_pic->field_picture;
364 int pic_height = 16*s->mb_height >> ref_field_picture;
369 if(!FIELD_PICTURE && ref_field_picture){ // frame referencing two fields
370 ff_thread_await_progress((AVFrame*)ref_pic, FFMIN((row >> 1) - !(row&1), pic_height-1), 1);
371 ff_thread_await_progress((AVFrame*)ref_pic, FFMIN((row >> 1) , pic_height-1), 0);
372 }else if(FIELD_PICTURE && !ref_field_picture){ // field referencing one field of a frame
373 ff_thread_await_progress((AVFrame*)ref_pic, FFMIN(row*2 + ref_field , pic_height-1), 0);
374 }else if(FIELD_PICTURE){
375 ff_thread_await_progress((AVFrame*)ref_pic, FFMIN(row, pic_height-1), ref_field);
377 ff_thread_await_progress((AVFrame*)ref_pic, FFMIN(row, pic_height-1), 0);
386 * DCT transforms the 16 dc values.
387 * @param qp quantization parameter ??? FIXME
389 static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
390 // const int qmul= dequant_coeff[qp][0];
392 int temp[16]; //FIXME check if this is a good idea
393 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
394 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
397 const int offset= y_offset[i];
398 const int z0= block[offset+stride*0] + block[offset+stride*4];
399 const int z1= block[offset+stride*0] - block[offset+stride*4];
400 const int z2= block[offset+stride*1] - block[offset+stride*5];
401 const int z3= block[offset+stride*1] + block[offset+stride*5];
410 const int offset= x_offset[i];
411 const int z0= temp[4*0+i] + temp[4*2+i];
412 const int z1= temp[4*0+i] - temp[4*2+i];
413 const int z2= temp[4*1+i] - temp[4*3+i];
414 const int z3= temp[4*1+i] + temp[4*3+i];
416 block[stride*0 +offset]= (z0 + z3)>>1;
417 block[stride*2 +offset]= (z1 + z2)>>1;
418 block[stride*8 +offset]= (z1 - z2)>>1;
419 block[stride*10+offset]= (z0 - z3)>>1;
428 static void chroma_dc_dct_c(DCTELEM *block){
429 const int stride= 16*2;
430 const int xStride= 16;
433 a= block[stride*0 + xStride*0];
434 b= block[stride*0 + xStride*1];
435 c= block[stride*1 + xStride*0];
436 d= block[stride*1 + xStride*1];
443 block[stride*0 + xStride*0]= (a+c);
444 block[stride*0 + xStride*1]= (e+b);
445 block[stride*1 + xStride*0]= (a-c);
446 block[stride*1 + xStride*1]= (e-b);
450 static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
451 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
452 int src_x_offset, int src_y_offset,
453 qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op,
455 MpegEncContext * const s = &h->s;
456 const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
457 int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
458 const int luma_xy= (mx&3) + ((my&3)<<2);
459 uint8_t * src_y = pic->data[0] + ((mx>>2) << pixel_shift) + (my>>2)*h->mb_linesize;
460 uint8_t * src_cb, * src_cr;
461 int extra_width= h->emu_edge_width;
462 int extra_height= h->emu_edge_height;
464 const int full_mx= mx>>2;
465 const int full_my= my>>2;
466 const int pic_width = 16*s->mb_width;
467 const int pic_height = 16*s->mb_height >> MB_FIELD;
469 if(mx&7) extra_width -= 3;
470 if(my&7) extra_height -= 3;
472 if( full_mx < 0-extra_width
473 || full_my < 0-extra_height
474 || full_mx + 16/*FIXME*/ > pic_width + extra_width
475 || full_my + 16/*FIXME*/ > pic_height + extra_height){
476 s->dsp.emulated_edge_mc(s->edge_emu_buffer, src_y - (2 << pixel_shift) - 2*h->mb_linesize, h->mb_linesize, 16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, pic_width, pic_height);
477 src_y= s->edge_emu_buffer + (2 << pixel_shift) + 2*h->mb_linesize;
481 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
483 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
486 if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
489 // chroma offset when predicting from a field of opposite parity
490 my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
491 emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
493 src_cb= pic->data[1] + ((mx>>3) << pixel_shift) + (my>>3)*h->mb_uvlinesize;
494 src_cr= pic->data[2] + ((mx>>3) << pixel_shift) + (my>>3)*h->mb_uvlinesize;
497 s->dsp.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);
498 src_cb= s->edge_emu_buffer;
500 chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
503 s->dsp.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);
504 src_cr= s->edge_emu_buffer;
506 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
509 static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
510 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
511 int x_offset, int y_offset,
512 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
513 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
514 int list0, int list1, int pixel_shift){
515 MpegEncContext * const s = &h->s;
516 qpel_mc_func *qpix_op= qpix_put;
517 h264_chroma_mc_func chroma_op= chroma_put;
519 dest_y += (2*x_offset << pixel_shift) + 2*y_offset*h-> mb_linesize;
520 dest_cb += ( x_offset << pixel_shift) + y_offset*h->mb_uvlinesize;
521 dest_cr += ( x_offset << pixel_shift) + y_offset*h->mb_uvlinesize;
522 x_offset += 8*s->mb_x;
523 y_offset += 8*(s->mb_y >> MB_FIELD);
526 Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
527 mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
528 dest_y, dest_cb, dest_cr, x_offset, y_offset,
529 qpix_op, chroma_op, pixel_shift);
532 chroma_op= chroma_avg;
536 Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
537 mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
538 dest_y, dest_cb, dest_cr, x_offset, y_offset,
539 qpix_op, chroma_op, pixel_shift);
543 static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
544 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
545 int x_offset, int y_offset,
546 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
547 h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
548 h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
549 int list0, int list1, int pixel_shift){
550 MpegEncContext * const s = &h->s;
552 dest_y += (2*x_offset << pixel_shift) + 2*y_offset*h-> mb_linesize;
553 dest_cb += ( x_offset << pixel_shift) + y_offset*h->mb_uvlinesize;
554 dest_cr += ( x_offset << pixel_shift) + y_offset*h->mb_uvlinesize;
555 x_offset += 8*s->mb_x;
556 y_offset += 8*(s->mb_y >> MB_FIELD);
559 /* don't optimize for luma-only case, since B-frames usually
560 * use implicit weights => chroma too. */
561 uint8_t *tmp_cb = s->obmc_scratchpad;
562 uint8_t *tmp_cr = s->obmc_scratchpad + (8 << pixel_shift);
563 uint8_t *tmp_y = s->obmc_scratchpad + 8*h->mb_uvlinesize;
564 int refn0 = h->ref_cache[0][ scan8[n] ];
565 int refn1 = h->ref_cache[1][ scan8[n] ];
567 mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
568 dest_y, dest_cb, dest_cr,
569 x_offset, y_offset, qpix_put, chroma_put, pixel_shift);
570 mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
571 tmp_y, tmp_cb, tmp_cr,
572 x_offset, y_offset, qpix_put, chroma_put, pixel_shift);
574 if(h->use_weight == 2){
575 int weight0 = h->implicit_weight[refn0][refn1][s->mb_y&1];
576 int weight1 = 64 - weight0;
577 luma_weight_avg( dest_y, tmp_y, h-> mb_linesize, 5, weight0, weight1, 0);
578 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
579 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
581 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
582 h->luma_weight[refn0][0][0] , h->luma_weight[refn1][1][0],
583 h->luma_weight[refn0][0][1] + h->luma_weight[refn1][1][1]);
584 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
585 h->chroma_weight[refn0][0][0][0] , h->chroma_weight[refn1][1][0][0],
586 h->chroma_weight[refn0][0][0][1] + h->chroma_weight[refn1][1][0][1]);
587 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
588 h->chroma_weight[refn0][0][1][0] , h->chroma_weight[refn1][1][1][0],
589 h->chroma_weight[refn0][0][1][1] + h->chroma_weight[refn1][1][1][1]);
592 int list = list1 ? 1 : 0;
593 int refn = h->ref_cache[list][ scan8[n] ];
594 Picture *ref= &h->ref_list[list][refn];
595 mc_dir_part(h, ref, n, square, chroma_height, delta, list,
596 dest_y, dest_cb, dest_cr, x_offset, y_offset,
597 qpix_put, chroma_put, pixel_shift);
599 luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
600 h->luma_weight[refn][list][0], h->luma_weight[refn][list][1]);
601 if(h->use_weight_chroma){
602 chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
603 h->chroma_weight[refn][list][0][0], h->chroma_weight[refn][list][0][1]);
604 chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
605 h->chroma_weight[refn][list][1][0], h->chroma_weight[refn][list][1][1]);
610 static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
611 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
612 int x_offset, int y_offset,
613 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
614 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
615 h264_weight_func *weight_op, h264_biweight_func *weight_avg,
616 int list0, int list1, int pixel_shift){
617 if((h->use_weight==2 && list0 && list1
618 && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ][h->s.mb_y&1] != 32))
620 mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
621 x_offset, y_offset, qpix_put, chroma_put,
622 weight_op[0], weight_op[3], weight_avg[0],
623 weight_avg[3], list0, list1, pixel_shift);
625 mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
626 x_offset, y_offset, qpix_put, chroma_put, qpix_avg,
627 chroma_avg, list0, list1, pixel_shift);
630 static inline void prefetch_motion(H264Context *h, int list, int pixel_shift){
631 /* fetch pixels for estimated mv 4 macroblocks ahead
632 * optimized for 64byte cache lines */
633 MpegEncContext * const s = &h->s;
634 const int refn = h->ref_cache[list][scan8[0]];
636 const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
637 const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
638 uint8_t **src= h->ref_list[list][refn].data;
639 int off= (mx << pixel_shift) + (my + (s->mb_x&3)*4)*h->mb_linesize + (64 << pixel_shift);
640 s->dsp.prefetch(src[0]+off, s->linesize, 4);
641 off= ((mx>>1) << pixel_shift) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + (64 << pixel_shift);
642 s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
646 static av_always_inline void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
647 qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
648 qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
649 h264_weight_func *weight_op, h264_biweight_func *weight_avg,
651 MpegEncContext * const s = &h->s;
652 const int mb_xy= h->mb_xy;
653 const int mb_type= s->current_picture.mb_type[mb_xy];
655 assert(IS_INTER(mb_type));
657 if(HAVE_PTHREADS && (s->avctx->active_thread_type & FF_THREAD_FRAME))
659 prefetch_motion(h, 0, pixel_shift);
661 if(IS_16X16(mb_type)){
662 mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
663 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
664 weight_op, weight_avg,
665 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1),
667 }else if(IS_16X8(mb_type)){
668 mc_part(h, 0, 0, 4, 8 << pixel_shift, dest_y, dest_cb, dest_cr, 0, 0,
669 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
670 &weight_op[1], &weight_avg[1],
671 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1),
673 mc_part(h, 8, 0, 4, 8 << pixel_shift, dest_y, dest_cb, dest_cr, 0, 4,
674 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
675 &weight_op[1], &weight_avg[1],
676 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1),
678 }else if(IS_8X16(mb_type)){
679 mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
680 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
681 &weight_op[2], &weight_avg[2],
682 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1),
684 mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
685 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
686 &weight_op[2], &weight_avg[2],
687 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1),
692 assert(IS_8X8(mb_type));
695 const int sub_mb_type= h->sub_mb_type[i];
697 int x_offset= (i&1)<<2;
698 int y_offset= (i&2)<<1;
700 if(IS_SUB_8X8(sub_mb_type)){
701 mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
702 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
703 &weight_op[3], &weight_avg[3],
704 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1),
706 }else if(IS_SUB_8X4(sub_mb_type)){
707 mc_part(h, n , 0, 2, 4 << pixel_shift, dest_y, dest_cb, dest_cr, x_offset, y_offset,
708 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
709 &weight_op[4], &weight_avg[4],
710 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1),
712 mc_part(h, n+2, 0, 2, 4 << pixel_shift, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
713 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
714 &weight_op[4], &weight_avg[4],
715 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1),
717 }else if(IS_SUB_4X8(sub_mb_type)){
718 mc_part(h, n , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
719 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
720 &weight_op[5], &weight_avg[5],
721 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1),
723 mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
724 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
725 &weight_op[5], &weight_avg[5],
726 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1),
730 assert(IS_SUB_4X4(sub_mb_type));
732 int sub_x_offset= x_offset + 2*(j&1);
733 int sub_y_offset= y_offset + (j&2);
734 mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
735 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
736 &weight_op[6], &weight_avg[6],
737 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1),
744 prefetch_motion(h, 1, pixel_shift);
747 #define hl_motion_fn(sh, bits) \
748 static av_always_inline void hl_motion_ ## bits(H264Context *h, \
750 uint8_t *dest_cb, uint8_t *dest_cr, \
751 qpel_mc_func (*qpix_put)[16], \
752 h264_chroma_mc_func (*chroma_put), \
753 qpel_mc_func (*qpix_avg)[16], \
754 h264_chroma_mc_func (*chroma_avg), \
755 h264_weight_func *weight_op, \
756 h264_biweight_func *weight_avg) \
758 hl_motion(h, dest_y, dest_cb, dest_cr, qpix_put, chroma_put, \
759 qpix_avg, chroma_avg, weight_op, weight_avg, sh); \
764 static void free_tables(H264Context *h, int free_rbsp){
768 av_freep(&h->intra4x4_pred_mode);
769 av_freep(&h->chroma_pred_mode_table);
770 av_freep(&h->cbp_table);
771 av_freep(&h->mvd_table[0]);
772 av_freep(&h->mvd_table[1]);
773 av_freep(&h->direct_table);
774 av_freep(&h->non_zero_count);
775 av_freep(&h->slice_table_base);
776 h->slice_table= NULL;
777 av_freep(&h->list_counts);
779 av_freep(&h->mb2b_xy);
780 av_freep(&h->mb2br_xy);
782 for(i = 0; i < MAX_THREADS; i++) {
783 hx = h->thread_context[i];
785 av_freep(&hx->top_borders[1]);
786 av_freep(&hx->top_borders[0]);
787 av_freep(&hx->s.obmc_scratchpad);
789 av_freep(&hx->rbsp_buffer[1]);
790 av_freep(&hx->rbsp_buffer[0]);
791 hx->rbsp_buffer_size[0] = 0;
792 hx->rbsp_buffer_size[1] = 0;
794 if (i) av_freep(&h->thread_context[i]);
798 static void init_dequant8_coeff_table(H264Context *h){
800 const int max_qp = 51 + 6*(h->sps.bit_depth_luma-8);
801 h->dequant8_coeff[0] = h->dequant8_buffer[0];
802 h->dequant8_coeff[1] = h->dequant8_buffer[1];
805 if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
806 h->dequant8_coeff[1] = h->dequant8_buffer[0];
810 for(q=0; q<max_qp+1; q++){
814 h->dequant8_coeff[i][q][(x>>3)|((x&7)<<3)] =
815 ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
816 h->pps.scaling_matrix8[i][x]) << shift;
821 static void init_dequant4_coeff_table(H264Context *h){
823 const int max_qp = 51 + 6*(h->sps.bit_depth_luma-8);
825 h->dequant4_coeff[i] = h->dequant4_buffer[i];
827 if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
828 h->dequant4_coeff[i] = h->dequant4_buffer[j];
835 for(q=0; q<max_qp+1; q++){
836 int shift = div6[q] + 2;
839 h->dequant4_coeff[i][q][(x>>2)|((x<<2)&0xF)] =
840 ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
841 h->pps.scaling_matrix4[i][x]) << shift;
846 static void init_dequant_tables(H264Context *h){
848 init_dequant4_coeff_table(h);
849 if(h->pps.transform_8x8_mode)
850 init_dequant8_coeff_table(h);
851 if(h->sps.transform_bypass){
854 h->dequant4_coeff[i][0][x] = 1<<6;
855 if(h->pps.transform_8x8_mode)
858 h->dequant8_coeff[i][0][x] = 1<<6;
863 int ff_h264_alloc_tables(H264Context *h){
864 MpegEncContext * const s = &h->s;
865 const int big_mb_num= s->mb_stride * (s->mb_height+1);
866 const int row_mb_num= 2*s->mb_stride*s->avctx->thread_count;
869 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, row_mb_num * 8 * sizeof(uint8_t), fail)
871 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count , big_mb_num * 32 * sizeof(uint8_t), fail)
872 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail)
873 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail)
875 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail)
876 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 16*row_mb_num * sizeof(uint8_t), fail);
877 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 16*row_mb_num * sizeof(uint8_t), fail);
878 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 4*big_mb_num * sizeof(uint8_t) , fail);
879 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts, big_mb_num * sizeof(uint8_t), fail)
881 memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base));
882 h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
884 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy , big_mb_num * sizeof(uint32_t), fail);
885 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2br_xy , big_mb_num * sizeof(uint32_t), fail);
886 for(y=0; y<s->mb_height; y++){
887 for(x=0; x<s->mb_width; x++){
888 const int mb_xy= x + y*s->mb_stride;
889 const int b_xy = 4*x + 4*y*h->b_stride;
891 h->mb2b_xy [mb_xy]= b_xy;
892 h->mb2br_xy[mb_xy]= 8*(FMO ? mb_xy : (mb_xy % (2*s->mb_stride)));
896 s->obmc_scratchpad = NULL;
898 if(!h->dequant4_coeff[0])
899 init_dequant_tables(h);
908 * Mimic alloc_tables(), but for every context thread.
910 static void clone_tables(H264Context *dst, H264Context *src, int i){
911 MpegEncContext * const s = &src->s;
912 dst->intra4x4_pred_mode = src->intra4x4_pred_mode + i*8*2*s->mb_stride;
913 dst->non_zero_count = src->non_zero_count;
914 dst->slice_table = src->slice_table;
915 dst->cbp_table = src->cbp_table;
916 dst->mb2b_xy = src->mb2b_xy;
917 dst->mb2br_xy = src->mb2br_xy;
918 dst->chroma_pred_mode_table = src->chroma_pred_mode_table;
919 dst->mvd_table[0] = src->mvd_table[0] + i*8*2*s->mb_stride;
920 dst->mvd_table[1] = src->mvd_table[1] + i*8*2*s->mb_stride;
921 dst->direct_table = src->direct_table;
922 dst->list_counts = src->list_counts;
924 dst->s.obmc_scratchpad = NULL;
925 ff_h264_pred_init(&dst->hpc, src->s.codec_id, src->sps.bit_depth_luma);
930 * Allocate buffers which are not shared amongst multiple threads.
932 static int context_init(H264Context *h){
933 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t)*2, fail)
934 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t)*2, fail)
936 h->ref_cache[0][scan8[5 ]+1] = h->ref_cache[0][scan8[7 ]+1] = h->ref_cache[0][scan8[13]+1] =
937 h->ref_cache[1][scan8[5 ]+1] = h->ref_cache[1][scan8[7 ]+1] = h->ref_cache[1][scan8[13]+1] = PART_NOT_AVAILABLE;
941 return -1; // free_tables will clean up for us
944 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size);
946 static av_cold void common_init(H264Context *h){
947 MpegEncContext * const s = &h->s;
949 s->width = s->avctx->width;
950 s->height = s->avctx->height;
951 s->codec_id= s->avctx->codec->id;
953 ff_h264dsp_init(&h->h264dsp, 8);
954 ff_h264_pred_init(&h->hpc, s->codec_id, 8);
956 h->dequant_coeff_pps= -1;
957 s->unrestricted_mv=1;
960 dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
962 memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
963 memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
966 int ff_h264_decode_extradata(H264Context *h)
968 AVCodecContext *avctx = h->s.avctx;
970 if(*(char *)avctx->extradata == 1){
972 unsigned char *p = avctx->extradata;
976 if(avctx->extradata_size < 7) {
977 av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
980 /* sps and pps in the avcC always have length coded with 2 bytes,
981 so put a fake nal_length_size = 2 while parsing them */
982 h->nal_length_size = 2;
983 // Decode sps from avcC
984 cnt = *(p+5) & 0x1f; // Number of sps
986 for (i = 0; i < cnt; i++) {
987 nalsize = AV_RB16(p) + 2;
988 if(decode_nal_units(h, p, nalsize) < 0) {
989 av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
994 // Decode pps from avcC
995 cnt = *(p++); // Number of pps
996 for (i = 0; i < cnt; i++) {
997 nalsize = AV_RB16(p) + 2;
998 if(decode_nal_units(h, p, nalsize) != nalsize) {
999 av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
1004 // Now store right nal length size, that will be use to parse all other nals
1005 h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
1008 if(decode_nal_units(h, avctx->extradata, avctx->extradata_size) < 0)
1014 av_cold int ff_h264_decode_init(AVCodecContext *avctx){
1015 H264Context *h= avctx->priv_data;
1016 MpegEncContext * const s = &h->s;
1018 MPV_decode_defaults(s);
1023 s->out_format = FMT_H264;
1024 s->workaround_bugs= avctx->workaround_bugs;
1027 // s->decode_mb= ff_h263_decode_mb;
1028 s->quarter_sample = 1;
1029 if(!avctx->has_b_frames)
1032 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
1034 ff_h264_decode_init_vlc();
1037 h->sps.bit_depth_luma = avctx->bits_per_raw_sample = 8;
1039 h->thread_context[0] = h;
1040 h->outputed_poc = h->next_outputed_poc = INT_MIN;
1041 h->prev_poc_msb= 1<<16;
1043 ff_h264_reset_sei(h);
1044 if(avctx->codec_id == CODEC_ID_H264){
1045 if(avctx->ticks_per_frame == 1){
1046 s->avctx->time_base.den *=2;
1048 avctx->ticks_per_frame = 2;
1051 if(avctx->extradata_size > 0 && avctx->extradata &&
1052 ff_h264_decode_extradata(h))
1055 if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames < h->sps.num_reorder_frames){
1056 s->avctx->has_b_frames = h->sps.num_reorder_frames;
1063 #define IN_RANGE(a, b, size) (((a) >= (b)) && ((a) < ((b)+(size))))
1064 static void copy_picture_range(Picture **to, Picture **from, int count, MpegEncContext *new_base, MpegEncContext *old_base)
1068 for (i=0; i<count; i++){
1069 assert((IN_RANGE(from[i], old_base, sizeof(*old_base)) ||
1070 IN_RANGE(from[i], old_base->picture, sizeof(Picture) * old_base->picture_count) ||
1072 to[i] = REBASE_PICTURE(from[i], new_base, old_base);
1076 static void copy_parameter_set(void **to, void **from, int count, int size)
1080 for (i=0; i<count; i++){
1081 if (to[i] && !from[i]) av_freep(&to[i]);
1082 else if (from[i] && !to[i]) to[i] = av_malloc(size);
1084 if (from[i]) memcpy(to[i], from[i], size);
1088 static int decode_init_thread_copy(AVCodecContext *avctx){
1089 H264Context *h= avctx->priv_data;
1091 if (!avctx->is_copy) return 0;
1092 memset(h->sps_buffers, 0, sizeof(h->sps_buffers));
1093 memset(h->pps_buffers, 0, sizeof(h->pps_buffers));
1098 #define copy_fields(to, from, start_field, end_field) memcpy(&to->start_field, &from->start_field, (char*)&to->end_field - (char*)&to->start_field)
1099 static int decode_update_thread_context(AVCodecContext *dst, const AVCodecContext *src){
1100 H264Context *h= dst->priv_data, *h1= src->priv_data;
1101 MpegEncContext * const s = &h->s, * const s1 = &h1->s;
1102 int inited = s->context_initialized, err;
1105 if(dst == src || !s1->context_initialized) return 0;
1107 err = ff_mpeg_update_thread_context(dst, src);
1110 //FIXME handle width/height changing
1112 for(i = 0; i < MAX_SPS_COUNT; i++)
1113 av_freep(h->sps_buffers + i);
1115 for(i = 0; i < MAX_PPS_COUNT; i++)
1116 av_freep(h->pps_buffers + i);
1118 memcpy(&h->s + 1, &h1->s + 1, sizeof(H264Context) - sizeof(MpegEncContext)); //copy all fields after MpegEnc
1119 memset(h->sps_buffers, 0, sizeof(h->sps_buffers));
1120 memset(h->pps_buffers, 0, sizeof(h->pps_buffers));
1121 ff_h264_alloc_tables(h);
1125 h->rbsp_buffer[i] = NULL;
1126 h->rbsp_buffer_size[i] = 0;
1129 h->thread_context[0] = h;
1131 // frame_start may not be called for the next thread (if it's decoding a bottom field)
1132 // so this has to be allocated here
1133 h->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
1135 s->dsp.clear_blocks(h->mb);
1138 //extradata/NAL handling
1139 h->is_avc = h1->is_avc;
1142 copy_parameter_set((void**)h->sps_buffers, (void**)h1->sps_buffers, MAX_SPS_COUNT, sizeof(SPS));
1144 copy_parameter_set((void**)h->pps_buffers, (void**)h1->pps_buffers, MAX_PPS_COUNT, sizeof(PPS));
1147 //Dequantization matrices
1148 //FIXME these are big - can they be only copied when PPS changes?
1149 copy_fields(h, h1, dequant4_buffer, dequant4_coeff);
1152 h->dequant4_coeff[i] = h->dequant4_buffer[0] + (h1->dequant4_coeff[i] - h1->dequant4_buffer[0]);
1155 h->dequant8_coeff[i] = h->dequant8_buffer[0] + (h1->dequant8_coeff[i] - h1->dequant8_buffer[0]);
1157 h->dequant_coeff_pps = h1->dequant_coeff_pps;
1160 copy_fields(h, h1, poc_lsb, redundant_pic_count);
1163 copy_fields(h, h1, ref_count, list_count);
1164 copy_fields(h, h1, ref_list, intra_gb);
1165 copy_fields(h, h1, short_ref, cabac_init_idc);
1167 copy_picture_range(h->short_ref, h1->short_ref, 32, s, s1);
1168 copy_picture_range(h->long_ref, h1->long_ref, 32, s, s1);
1169 copy_picture_range(h->delayed_pic, h1->delayed_pic, MAX_DELAYED_PIC_COUNT+2, s, s1);
1171 h->last_slice_type = h1->last_slice_type;
1173 if(!s->current_picture_ptr) return 0;
1176 ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1177 h->prev_poc_msb = h->poc_msb;
1178 h->prev_poc_lsb = h->poc_lsb;
1180 h->prev_frame_num_offset= h->frame_num_offset;
1181 h->prev_frame_num = h->frame_num;
1182 h->outputed_poc = h->next_outputed_poc;
1187 int ff_h264_frame_start(H264Context *h){
1188 MpegEncContext * const s = &h->s;
1190 const int pixel_shift = h->pixel_shift;
1191 int thread_count = (s->avctx->active_thread_type & FF_THREAD_SLICE) ? s->avctx->thread_count : 1;
1193 if(MPV_frame_start(s, s->avctx) < 0)
1195 ff_er_frame_start(s);
1197 * MPV_frame_start uses pict_type to derive key_frame.
1198 * This is incorrect for H.264; IDR markings must be used.
1199 * Zero here; IDR markings per slice in frame or fields are ORed in later.
1200 * See decode_nal_units().
1202 s->current_picture_ptr->key_frame= 0;
1203 s->current_picture_ptr->mmco_reset= 0;
1205 assert(s->linesize && s->uvlinesize);
1207 for(i=0; i<16; i++){
1208 h->block_offset[i]= (4*((scan8[i] - scan8[0])&7) << pixel_shift) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
1209 h->block_offset[24+i]= (4*((scan8[i] - scan8[0])&7) << pixel_shift) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
1212 h->block_offset[16+i]=
1213 h->block_offset[20+i]= (4*((scan8[i] - scan8[0])&7) << pixel_shift) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
1214 h->block_offset[24+16+i]=
1215 h->block_offset[24+20+i]= (4*((scan8[i] - scan8[0])&7) << pixel_shift) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
1218 /* can't be in alloc_tables because linesize isn't known there.
1219 * FIXME: redo bipred weight to not require extra buffer? */
1220 for(i = 0; i < thread_count; i++)
1221 if(h->thread_context[i] && !h->thread_context[i]->s.obmc_scratchpad)
1222 h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
1224 /* some macroblocks can be accessed before they're available in case of lost slices, mbaff or threading*/
1225 memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
1227 // s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
1229 // We mark the current picture as non-reference after allocating it, so
1230 // that if we break out due to an error it can be released automatically
1231 // in the next MPV_frame_start().
1232 // SVQ3 as well as most other codecs have only last/next/current and thus
1233 // get released even with set reference, besides SVQ3 and others do not
1234 // mark frames as reference later "naturally".
1235 if(s->codec_id != CODEC_ID_SVQ3)
1236 s->current_picture_ptr->reference= 0;
1238 s->current_picture_ptr->field_poc[0]=
1239 s->current_picture_ptr->field_poc[1]= INT_MAX;
1241 h->next_output_pic = NULL;
1243 assert(s->current_picture_ptr->long_ref==0);
1249 * Run setup operations that must be run after slice header decoding.
1250 * This includes finding the next displayed frame.
1252 * @param h h264 master context
1253 * @param setup_finished enough NALs have been read that we can call
1254 * ff_thread_finish_setup()
1256 static void decode_postinit(H264Context *h, int setup_finished){
1257 MpegEncContext * const s = &h->s;
1258 Picture *out = s->current_picture_ptr;
1259 Picture *cur = s->current_picture_ptr;
1260 int i, pics, out_of_order, out_idx;
1262 s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
1263 s->current_picture_ptr->pict_type= s->pict_type;
1265 if (h->next_output_pic) return;
1267 if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
1268 //FIXME: if we have two PAFF fields in one packet, we can't start the next thread here.
1269 //If we have one field per packet, we can. The check in decode_nal_units() is not good enough
1270 //to find this yet, so we assume the worst for now.
1271 //if (setup_finished)
1272 // ff_thread_finish_setup(s->avctx);
1276 cur->interlaced_frame = 0;
1277 cur->repeat_pict = 0;
1279 /* Signal interlacing information externally. */
1280 /* Prioritize picture timing SEI information over used decoding process if it exists. */
1282 if(h->sps.pic_struct_present_flag){
1283 switch (h->sei_pic_struct)
1285 case SEI_PIC_STRUCT_FRAME:
1287 case SEI_PIC_STRUCT_TOP_FIELD:
1288 case SEI_PIC_STRUCT_BOTTOM_FIELD:
1289 cur->interlaced_frame = 1;
1291 case SEI_PIC_STRUCT_TOP_BOTTOM:
1292 case SEI_PIC_STRUCT_BOTTOM_TOP:
1293 if (FIELD_OR_MBAFF_PICTURE)
1294 cur->interlaced_frame = 1;
1296 // try to flag soft telecine progressive
1297 cur->interlaced_frame = h->prev_interlaced_frame;
1299 case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
1300 case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
1301 // Signal the possibility of telecined film externally (pic_struct 5,6)
1302 // From these hints, let the applications decide if they apply deinterlacing.
1303 cur->repeat_pict = 1;
1305 case SEI_PIC_STRUCT_FRAME_DOUBLING:
1306 // Force progressive here, as doubling interlaced frame is a bad idea.
1307 cur->repeat_pict = 2;
1309 case SEI_PIC_STRUCT_FRAME_TRIPLING:
1310 cur->repeat_pict = 4;
1314 if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
1315 cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0;
1317 /* Derive interlacing flag from used decoding process. */
1318 cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
1320 h->prev_interlaced_frame = cur->interlaced_frame;
1322 if (cur->field_poc[0] != cur->field_poc[1]){
1323 /* Derive top_field_first from field pocs. */
1324 cur->top_field_first = cur->field_poc[0] < cur->field_poc[1];
1326 if(cur->interlaced_frame || h->sps.pic_struct_present_flag){
1327 /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */
1328 if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM
1329 || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
1330 cur->top_field_first = 1;
1332 cur->top_field_first = 0;
1334 /* Most likely progressive */
1335 cur->top_field_first = 0;
1339 //FIXME do something with unavailable reference frames
1341 /* Sort B-frames into display order */
1343 if(h->sps.bitstream_restriction_flag
1344 && s->avctx->has_b_frames < h->sps.num_reorder_frames){
1345 s->avctx->has_b_frames = h->sps.num_reorder_frames;
1349 if( s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT
1350 && !h->sps.bitstream_restriction_flag){
1351 s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT;
1356 while(h->delayed_pic[pics]) pics++;
1358 assert(pics <= MAX_DELAYED_PIC_COUNT);
1360 h->delayed_pic[pics++] = cur;
1361 if(cur->reference == 0)
1362 cur->reference = DELAYED_PIC_REF;
1364 out = h->delayed_pic[0];
1366 for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
1367 if(h->delayed_pic[i]->poc < out->poc){
1368 out = h->delayed_pic[i];
1371 if(s->avctx->has_b_frames == 0 && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset))
1372 h->next_outputed_poc= INT_MIN;
1373 out_of_order = out->poc < h->next_outputed_poc;
1375 if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames)
1377 else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT)
1379 ((h->next_outputed_poc != INT_MIN && out->poc > h->next_outputed_poc + 2)
1380 || cur->pict_type == AV_PICTURE_TYPE_B)))
1383 s->avctx->has_b_frames++;
1386 if(out_of_order || pics > s->avctx->has_b_frames){
1387 out->reference &= ~DELAYED_PIC_REF;
1388 out->owner2 = s; // for frame threading, the owner must be the second field's thread
1389 // or else the first thread can release the picture and reuse it unsafely
1390 for(i=out_idx; h->delayed_pic[i]; i++)
1391 h->delayed_pic[i] = h->delayed_pic[i+1];
1393 if(!out_of_order && pics > s->avctx->has_b_frames){
1394 h->next_output_pic = out;
1395 if(out_idx==0 && h->delayed_pic[0] && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) {
1396 h->next_outputed_poc = INT_MIN;
1398 h->next_outputed_poc = out->poc;
1400 av_log(s->avctx, AV_LOG_DEBUG, "no picture\n");
1404 ff_thread_finish_setup(s->avctx);
1407 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){
1408 MpegEncContext * const s = &h->s;
1409 uint8_t *top_border;
1411 const int pixel_shift = h->pixel_shift;
1414 src_cb -= uvlinesize;
1415 src_cr -= uvlinesize;
1417 if(!simple && FRAME_MBAFF){
1420 top_border = h->top_borders[0][s->mb_x];
1421 AV_COPY128(top_border, src_y + 15*linesize);
1423 AV_COPY128(top_border+16, src_y+15*linesize+16);
1424 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1426 AV_COPY128(top_border+32, src_cb+7*uvlinesize);
1427 AV_COPY128(top_border+48, src_cr+7*uvlinesize);
1429 AV_COPY64(top_border+16, src_cb+7*uvlinesize);
1430 AV_COPY64(top_border+24, src_cr+7*uvlinesize);
1440 top_border = h->top_borders[top_idx][s->mb_x];
1441 // There are two lines saved, the line above the the top macroblock of a pair,
1442 // and the line above the bottom macroblock
1443 AV_COPY128(top_border, src_y + 16*linesize);
1445 AV_COPY128(top_border+16, src_y+16*linesize+16);
1447 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1449 AV_COPY128(top_border+32, src_cb+8*uvlinesize);
1450 AV_COPY128(top_border+48, src_cr+8*uvlinesize);
1452 AV_COPY64(top_border+16, src_cb+8*uvlinesize);
1453 AV_COPY64(top_border+24, src_cr+8*uvlinesize);
1458 static inline void xchg_mb_border(H264Context *h, uint8_t *src_y,
1459 uint8_t *src_cb, uint8_t *src_cr,
1460 int linesize, int uvlinesize,
1461 int xchg, int simple, int pixel_shift){
1462 MpegEncContext * const s = &h->s;
1463 int deblock_topleft;
1466 uint8_t *top_border_m1;
1467 uint8_t *top_border;
1469 if(!simple && FRAME_MBAFF){
1474 top_idx = MB_MBAFF ? 0 : 1;
1478 if(h->deblocking_filter == 2) {
1479 deblock_topleft = h->slice_table[h->mb_xy - 1 - s->mb_stride] == h->slice_num;
1480 deblock_top = h->top_type;
1482 deblock_topleft = (s->mb_x > 0);
1483 deblock_top = (s->mb_y > !!MB_FIELD);
1486 src_y -= linesize + 1 + pixel_shift;
1487 src_cb -= uvlinesize + 1 + pixel_shift;
1488 src_cr -= uvlinesize + 1 + pixel_shift;
1490 top_border_m1 = h->top_borders[top_idx][s->mb_x-1];
1491 top_border = h->top_borders[top_idx][s->mb_x];
1493 #define XCHG(a,b,xchg)\
1496 AV_SWAP64(b+0,a+0);\
1497 AV_SWAP64(b+8,a+8);\
1502 if (xchg) AV_SWAP64(b,a);\
1503 else AV_COPY64(b,a);
1506 if(deblock_topleft){
1507 XCHG(top_border_m1 + (8 << pixel_shift), src_y - (7 << pixel_shift), 1);
1509 XCHG(top_border + (0 << pixel_shift), src_y + (1 << pixel_shift), xchg);
1510 XCHG(top_border + (8 << pixel_shift), src_y + (9 << pixel_shift), 1);
1511 if(s->mb_x+1 < s->mb_width){
1512 XCHG(h->top_borders[top_idx][s->mb_x+1], src_y + (17 << pixel_shift), 1);
1515 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1517 if(deblock_topleft){
1518 XCHG(top_border_m1 + (16 << pixel_shift), src_cb - (7 << pixel_shift), 1);
1519 XCHG(top_border_m1 + (24 << pixel_shift), src_cr - (7 << pixel_shift), 1);
1521 XCHG(top_border + (16 << pixel_shift), src_cb+1+pixel_shift, 1);
1522 XCHG(top_border + (24 << pixel_shift), src_cr+1+pixel_shift, 1);
1527 static av_always_inline int dctcoef_get(DCTELEM *mb, int high_bit_depth, int index) {
1528 if (high_bit_depth) {
1529 return AV_RN32A(((int32_t*)mb) + index);
1531 return AV_RN16A(mb + index);
1534 static av_always_inline void dctcoef_set(DCTELEM *mb, int high_bit_depth, int index, int value) {
1535 if (high_bit_depth) {
1536 AV_WN32A(((int32_t*)mb) + index, value);
1538 AV_WN16A(mb + index, value);
1541 static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple, int pixel_shift){
1542 MpegEncContext * const s = &h->s;
1543 const int mb_x= s->mb_x;
1544 const int mb_y= s->mb_y;
1545 const int mb_xy= h->mb_xy;
1546 const int mb_type= s->current_picture.mb_type[mb_xy];
1547 uint8_t *dest_y, *dest_cb, *dest_cr;
1548 int linesize, uvlinesize /*dct_offset*/;
1550 int *block_offset = &h->block_offset[0];
1551 const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
1552 /* is_h264 should always be true if SVQ3 is disabled. */
1553 const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
1554 void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1555 void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1557 dest_y = s->current_picture.data[0] + ((mb_x << pixel_shift) + mb_y * s->linesize ) * 16;
1558 dest_cb = s->current_picture.data[1] + ((mb_x << pixel_shift) + mb_y * s->uvlinesize) * 8;
1559 dest_cr = s->current_picture.data[2] + ((mb_x << pixel_shift) + mb_y * s->uvlinesize) * 8;
1561 s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + (64 << pixel_shift), s->linesize, 4);
1562 s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + (64 << pixel_shift), dest_cr - dest_cb, 2);
1564 h->list_counts[mb_xy]= h->list_count;
1566 if (!simple && MB_FIELD) {
1567 linesize = h->mb_linesize = s->linesize * 2;
1568 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
1569 block_offset = &h->block_offset[24];
1570 if(mb_y&1){ //FIXME move out of this function?
1571 dest_y -= s->linesize*15;
1572 dest_cb-= s->uvlinesize*7;
1573 dest_cr-= s->uvlinesize*7;
1577 for(list=0; list<h->list_count; list++){
1578 if(!USES_LIST(mb_type, list))
1580 if(IS_16X16(mb_type)){
1581 int8_t *ref = &h->ref_cache[list][scan8[0]];
1582 fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
1584 for(i=0; i<16; i+=4){
1585 int ref = h->ref_cache[list][scan8[i]];
1587 fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
1593 linesize = h->mb_linesize = s->linesize;
1594 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
1595 // dct_offset = s->linesize * 16;
1598 if (!simple && IS_INTRA_PCM(mb_type)) {
1600 const int bit_depth = h->sps.bit_depth_luma;
1603 init_get_bits(&gb, (uint8_t*)h->mb, 384*bit_depth);
1605 for (i = 0; i < 16; i++) {
1606 uint16_t *tmp_y = (uint16_t*)(dest_y + i*linesize);
1607 for (j = 0; j < 16; j++)
1608 tmp_y[j] = get_bits(&gb, bit_depth);
1610 for (i = 0; i < 8; i++) {
1611 uint16_t *tmp_cb = (uint16_t*)(dest_cb + i*uvlinesize);
1612 for (j = 0; j < 8; j++)
1613 tmp_cb[j] = get_bits(&gb, bit_depth);
1615 for (i = 0; i < 8; i++) {
1616 uint16_t *tmp_cr = (uint16_t*)(dest_cr + i*uvlinesize);
1617 for (j = 0; j < 8; j++)
1618 tmp_cr[j] = get_bits(&gb, bit_depth);
1621 for (i=0; i<16; i++) {
1622 memcpy(dest_y + i* linesize, h->mb + i*8, 16);
1624 for (i=0; i<8; i++) {
1625 memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4, 8);
1626 memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4, 8);
1630 if(IS_INTRA(mb_type)){
1631 if(h->deblocking_filter)
1632 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple, pixel_shift);
1634 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1635 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
1636 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
1639 if(IS_INTRA4x4(mb_type)){
1640 if(simple || !s->encoding){
1641 if(IS_8x8DCT(mb_type)){
1642 if(transform_bypass){
1644 idct_add = s->dsp.add_pixels8;
1646 idct_dc_add = h->h264dsp.h264_idct8_dc_add;
1647 idct_add = h->h264dsp.h264_idct8_add;
1649 for(i=0; i<16; i+=4){
1650 uint8_t * const ptr= dest_y + block_offset[i];
1651 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1652 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1653 h->hpc.pred8x8l_add[dir](ptr, h->mb + (i*16 << pixel_shift), linesize);
1655 const int nnz = h->non_zero_count_cache[ scan8[i] ];
1656 h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
1657 (h->topright_samples_available<<i)&0x4000, linesize);
1659 if(nnz == 1 && dctcoef_get(h->mb, pixel_shift, i*16))
1660 idct_dc_add(ptr, h->mb + (i*16 << pixel_shift), linesize);
1662 idct_add (ptr, h->mb + (i*16 << pixel_shift), linesize);
1667 if(transform_bypass){
1669 idct_add = s->dsp.add_pixels4;
1671 idct_dc_add = h->h264dsp.h264_idct_dc_add;
1672 idct_add = h->h264dsp.h264_idct_add;
1674 for(i=0; i<16; i++){
1675 uint8_t * const ptr= dest_y + block_offset[i];
1676 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1678 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1679 h->hpc.pred4x4_add[dir](ptr, h->mb + (i*16 << pixel_shift), linesize);
1684 if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
1685 const int topright_avail= (h->topright_samples_available<<i)&0x8000;
1686 assert(mb_y || linesize <= block_offset[i]);
1687 if(!topright_avail){
1689 tr_high= ((uint16_t*)ptr)[3 - linesize/2]*0x0001000100010001ULL;
1690 topright= (uint8_t*) &tr_high;
1692 tr= ptr[3 - linesize]*0x01010101;
1693 topright= (uint8_t*) &tr;
1696 topright= ptr + (4 << pixel_shift) - linesize;
1700 h->hpc.pred4x4[ dir ](ptr, topright, linesize);
1701 nnz = h->non_zero_count_cache[ scan8[i] ];
1704 if(nnz == 1 && dctcoef_get(h->mb, pixel_shift, i*16))
1705 idct_dc_add(ptr, h->mb + (i*16 << pixel_shift), linesize);
1707 idct_add (ptr, h->mb + (i*16 << pixel_shift), linesize);
1709 ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
1716 h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
1718 if(h->non_zero_count_cache[ scan8[LUMA_DC_BLOCK_INDEX] ]){
1719 if(!transform_bypass)
1720 h->h264dsp.h264_luma_dc_dequant_idct(h->mb, h->mb_luma_dc, h->dequant4_coeff[0][s->qscale][0]);
1722 static const uint8_t dc_mapping[16] = { 0*16, 1*16, 4*16, 5*16, 2*16, 3*16, 6*16, 7*16,
1723 8*16, 9*16,12*16,13*16,10*16,11*16,14*16,15*16};
1724 for(i = 0; i < 16; i++)
1725 dctcoef_set(h->mb, pixel_shift, dc_mapping[i], dctcoef_get(h->mb_luma_dc, pixel_shift, i));
1729 ff_svq3_luma_dc_dequant_idct_c(h->mb, h->mb_luma_dc, s->qscale);
1731 if(h->deblocking_filter)
1732 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple, pixel_shift);
1735 hl_motion_16(h, dest_y, dest_cb, dest_cr,
1736 s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1737 s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1738 h->h264dsp.weight_h264_pixels_tab,
1739 h->h264dsp.biweight_h264_pixels_tab);
1741 hl_motion_8(h, dest_y, dest_cb, dest_cr,
1742 s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1743 s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1744 h->h264dsp.weight_h264_pixels_tab,
1745 h->h264dsp.biweight_h264_pixels_tab);
1749 if(!IS_INTRA4x4(mb_type)){
1751 if(IS_INTRA16x16(mb_type)){
1752 if(transform_bypass){
1753 if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
1754 h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
1756 for(i=0; i<16; i++){
1757 if(h->non_zero_count_cache[ scan8[i] ] || dctcoef_get(h->mb, pixel_shift, i*16))
1758 s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + (i*16 << pixel_shift), linesize);
1762 h->h264dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1764 }else if(h->cbp&15){
1765 if(transform_bypass){
1766 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1767 idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
1768 for(i=0; i<16; i+=di){
1769 if(h->non_zero_count_cache[ scan8[i] ]){
1770 idct_add(dest_y + block_offset[i], h->mb + (i*16 << pixel_shift), linesize);
1774 if(IS_8x8DCT(mb_type)){
1775 h->h264dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1777 h->h264dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1782 for(i=0; i<16; i++){
1783 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
1784 uint8_t * const ptr= dest_y + block_offset[i];
1785 ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1791 if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
1792 uint8_t *dest[2] = {dest_cb, dest_cr};
1793 if(transform_bypass){
1794 if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
1795 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + (16*16 << pixel_shift), uvlinesize);
1796 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + (20*16 << pixel_shift), uvlinesize);
1798 idct_add = s->dsp.add_pixels4;
1799 for(i=16; i<16+8; i++){
1800 if(h->non_zero_count_cache[ scan8[i] ] || dctcoef_get(h->mb, pixel_shift, i*16))
1801 idct_add (dest[(i&4)>>2] + block_offset[i], h->mb + (i*16 << pixel_shift), uvlinesize);
1806 if(h->non_zero_count_cache[ scan8[CHROMA_DC_BLOCK_INDEX+0] ])
1807 h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + (16*16 << pixel_shift) , h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
1808 if(h->non_zero_count_cache[ scan8[CHROMA_DC_BLOCK_INDEX+1] ])
1809 h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + ((16*16+4*16) << pixel_shift), h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]);
1810 h->h264dsp.h264_idct_add8(dest, block_offset,
1812 h->non_zero_count_cache);
1814 h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + 16*16 , h->dequant4_coeff[IS_INTRA(mb_type) ? 1:4][h->chroma_qp[0]][0]);
1815 h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + 16*16+4*16, h->dequant4_coeff[IS_INTRA(mb_type) ? 2:5][h->chroma_qp[1]][0]);
1816 for(i=16; i<16+8; i++){
1817 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
1818 uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
1819 ff_svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[0][s->qscale + 12] - 12, 2);
1826 if(h->cbp || IS_INTRA(mb_type))
1827 s->dsp.clear_blocks(h->mb);
1831 * Process a macroblock; this case avoids checks for expensive uncommon cases.
1833 #define hl_decode_mb_simple(sh, bits) \
1834 static void hl_decode_mb_simple_ ## bits(H264Context *h){ \
1835 hl_decode_mb_internal(h, 1, sh); \
1837 hl_decode_mb_simple(0, 8);
1838 hl_decode_mb_simple(1, 16);
1841 * Process a macroblock; this handles edge cases, such as interlacing.
1843 static void av_noinline hl_decode_mb_complex(H264Context *h){
1844 hl_decode_mb_internal(h, 0, h->pixel_shift);
1847 void ff_h264_hl_decode_mb(H264Context *h){
1848 MpegEncContext * const s = &h->s;
1849 const int mb_xy= h->mb_xy;
1850 const int mb_type= s->current_picture.mb_type[mb_xy];
1851 int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1854 hl_decode_mb_complex(h);
1855 } else if (h->pixel_shift) {
1856 hl_decode_mb_simple_16(h);
1858 hl_decode_mb_simple_8(h);
1861 static int pred_weight_table(H264Context *h){
1862 MpegEncContext * const s = &h->s;
1864 int luma_def, chroma_def;
1867 h->use_weight_chroma= 0;
1868 h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
1870 h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
1871 luma_def = 1<<h->luma_log2_weight_denom;
1872 chroma_def = 1<<h->chroma_log2_weight_denom;
1874 for(list=0; list<2; list++){
1875 h->luma_weight_flag[list] = 0;
1876 h->chroma_weight_flag[list] = 0;
1877 for(i=0; i<h->ref_count[list]; i++){
1878 int luma_weight_flag, chroma_weight_flag;
1880 luma_weight_flag= get_bits1(&s->gb);
1881 if(luma_weight_flag){
1882 h->luma_weight[i][list][0]= get_se_golomb(&s->gb);
1883 h->luma_weight[i][list][1]= get_se_golomb(&s->gb);
1884 if( h->luma_weight[i][list][0] != luma_def
1885 || h->luma_weight[i][list][1] != 0) {
1887 h->luma_weight_flag[list]= 1;
1890 h->luma_weight[i][list][0]= luma_def;
1891 h->luma_weight[i][list][1]= 0;
1895 chroma_weight_flag= get_bits1(&s->gb);
1896 if(chroma_weight_flag){
1899 h->chroma_weight[i][list][j][0]= get_se_golomb(&s->gb);
1900 h->chroma_weight[i][list][j][1]= get_se_golomb(&s->gb);
1901 if( h->chroma_weight[i][list][j][0] != chroma_def
1902 || h->chroma_weight[i][list][j][1] != 0) {
1903 h->use_weight_chroma= 1;
1904 h->chroma_weight_flag[list]= 1;
1910 h->chroma_weight[i][list][j][0]= chroma_def;
1911 h->chroma_weight[i][list][j][1]= 0;
1916 if(h->slice_type_nos != AV_PICTURE_TYPE_B) break;
1918 h->use_weight= h->use_weight || h->use_weight_chroma;
1923 * Initialize implicit_weight table.
1924 * @param field 0/1 initialize the weight for interlaced MBAFF
1925 * -1 initializes the rest
1927 static void implicit_weight_table(H264Context *h, int field){
1928 MpegEncContext * const s = &h->s;
1929 int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
1931 for (i = 0; i < 2; i++) {
1932 h->luma_weight_flag[i] = 0;
1933 h->chroma_weight_flag[i] = 0;
1937 cur_poc = s->current_picture_ptr->poc;
1938 if( h->ref_count[0] == 1 && h->ref_count[1] == 1 && !FRAME_MBAFF
1939 && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
1941 h->use_weight_chroma= 0;
1945 ref_count0= h->ref_count[0];
1946 ref_count1= h->ref_count[1];
1948 cur_poc = s->current_picture_ptr->field_poc[field];
1950 ref_count0= 16+2*h->ref_count[0];
1951 ref_count1= 16+2*h->ref_count[1];
1955 h->use_weight_chroma= 2;
1956 h->luma_log2_weight_denom= 5;
1957 h->chroma_log2_weight_denom= 5;
1959 for(ref0=ref_start; ref0 < ref_count0; ref0++){
1960 int poc0 = h->ref_list[0][ref0].poc;
1961 for(ref1=ref_start; ref1 < ref_count1; ref1++){
1962 int poc1 = h->ref_list[1][ref1].poc;
1963 int td = av_clip(poc1 - poc0, -128, 127);
1966 int tb = av_clip(cur_poc - poc0, -128, 127);
1967 int tx = (16384 + (FFABS(td) >> 1)) / td;
1968 int dist_scale_factor = (tb*tx + 32) >> 8;
1969 if(dist_scale_factor >= -64 && dist_scale_factor <= 128)
1970 w = 64 - dist_scale_factor;
1973 h->implicit_weight[ref0][ref1][0]=
1974 h->implicit_weight[ref0][ref1][1]= w;
1976 h->implicit_weight[ref0][ref1][field]=w;
1983 * instantaneous decoder refresh.
1985 static void idr(H264Context *h){
1986 ff_h264_remove_all_refs(h);
1987 h->prev_frame_num= 0;
1988 h->prev_frame_num_offset= 0;
1993 /* forget old pics after a seek */
1994 static void flush_dpb(AVCodecContext *avctx){
1995 H264Context *h= avctx->priv_data;
1997 for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
1998 if(h->delayed_pic[i])
1999 h->delayed_pic[i]->reference= 0;
2000 h->delayed_pic[i]= NULL;
2002 h->outputed_poc=h->next_outputed_poc= INT_MIN;
2003 h->prev_interlaced_frame = 1;
2005 if(h->s.current_picture_ptr)
2006 h->s.current_picture_ptr->reference= 0;
2007 h->s.first_field= 0;
2008 ff_h264_reset_sei(h);
2009 ff_mpeg_flush(avctx);
2012 static int init_poc(H264Context *h){
2013 MpegEncContext * const s = &h->s;
2014 const int max_frame_num= 1<<h->sps.log2_max_frame_num;
2016 Picture *cur = s->current_picture_ptr;
2018 h->frame_num_offset= h->prev_frame_num_offset;
2019 if(h->frame_num < h->prev_frame_num)
2020 h->frame_num_offset += max_frame_num;
2022 if(h->sps.poc_type==0){
2023 const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
2025 if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
2026 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
2027 else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
2028 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
2030 h->poc_msb = h->prev_poc_msb;
2031 //printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
2033 field_poc[1] = h->poc_msb + h->poc_lsb;
2034 if(s->picture_structure == PICT_FRAME)
2035 field_poc[1] += h->delta_poc_bottom;
2036 }else if(h->sps.poc_type==1){
2037 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
2040 if(h->sps.poc_cycle_length != 0)
2041 abs_frame_num = h->frame_num_offset + h->frame_num;
2045 if(h->nal_ref_idc==0 && abs_frame_num > 0)
2048 expected_delta_per_poc_cycle = 0;
2049 for(i=0; i < h->sps.poc_cycle_length; i++)
2050 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
2052 if(abs_frame_num > 0){
2053 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
2054 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
2056 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
2057 for(i = 0; i <= frame_num_in_poc_cycle; i++)
2058 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
2062 if(h->nal_ref_idc == 0)
2063 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
2065 field_poc[0] = expectedpoc + h->delta_poc[0];
2066 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
2068 if(s->picture_structure == PICT_FRAME)
2069 field_poc[1] += h->delta_poc[1];
2071 int poc= 2*(h->frame_num_offset + h->frame_num);
2080 if(s->picture_structure != PICT_BOTTOM_FIELD)
2081 s->current_picture_ptr->field_poc[0]= field_poc[0];
2082 if(s->picture_structure != PICT_TOP_FIELD)
2083 s->current_picture_ptr->field_poc[1]= field_poc[1];
2084 cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
2091 * initialize scan tables
2093 static void init_scan_tables(H264Context *h){
2095 for(i=0; i<16; i++){
2096 #define T(x) (x>>2) | ((x<<2) & 0xF)
2097 h->zigzag_scan[i] = T(zigzag_scan[i]);
2098 h-> field_scan[i] = T( field_scan[i]);
2101 for(i=0; i<64; i++){
2102 #define T(x) (x>>3) | ((x&7)<<3)
2103 h->zigzag_scan8x8[i] = T(ff_zigzag_direct[i]);
2104 h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
2105 h->field_scan8x8[i] = T(field_scan8x8[i]);
2106 h->field_scan8x8_cavlc[i] = T(field_scan8x8_cavlc[i]);
2109 if(h->sps.transform_bypass){ //FIXME same ugly
2110 h->zigzag_scan_q0 = zigzag_scan;
2111 h->zigzag_scan8x8_q0 = ff_zigzag_direct;
2112 h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
2113 h->field_scan_q0 = field_scan;
2114 h->field_scan8x8_q0 = field_scan8x8;
2115 h->field_scan8x8_cavlc_q0 = field_scan8x8_cavlc;
2117 h->zigzag_scan_q0 = h->zigzag_scan;
2118 h->zigzag_scan8x8_q0 = h->zigzag_scan8x8;
2119 h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
2120 h->field_scan_q0 = h->field_scan;
2121 h->field_scan8x8_q0 = h->field_scan8x8;
2122 h->field_scan8x8_cavlc_q0 = h->field_scan8x8_cavlc;
2126 static void field_end(H264Context *h, int in_setup){
2127 MpegEncContext * const s = &h->s;
2128 AVCodecContext * const avctx= s->avctx;
2131 if (!in_setup && !s->dropable)
2132 ff_thread_report_progress((AVFrame*)s->current_picture_ptr, (16*s->mb_height >> FIELD_PICTURE) - 1,
2133 s->picture_structure==PICT_BOTTOM_FIELD);
2135 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2136 ff_vdpau_h264_set_reference_frames(s);
2138 if(in_setup || !(avctx->active_thread_type&FF_THREAD_FRAME)){
2140 ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
2141 h->prev_poc_msb= h->poc_msb;
2142 h->prev_poc_lsb= h->poc_lsb;
2144 h->prev_frame_num_offset= h->frame_num_offset;
2145 h->prev_frame_num= h->frame_num;
2146 h->outputed_poc = h->next_outputed_poc;
2149 if (avctx->hwaccel) {
2150 if (avctx->hwaccel->end_frame(avctx) < 0)
2151 av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
2154 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2155 ff_vdpau_h264_picture_complete(s);
2158 * FIXME: Error handling code does not seem to support interlaced
2159 * when slices span multiple rows
2160 * The ff_er_add_slice calls don't work right for bottom
2161 * fields; they cause massive erroneous error concealing
2162 * Error marking covers both fields (top and bottom).
2163 * This causes a mismatched s->error_count
2164 * and a bad error table. Further, the error count goes to
2165 * INT_MAX when called for bottom field, because mb_y is
2166 * past end by one (callers fault) and resync_mb_y != 0
2167 * causes problems for the first MB line, too.
2178 * Replicate H264 "master" context to thread contexts.
2180 static void clone_slice(H264Context *dst, H264Context *src)
2182 memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset));
2183 dst->s.current_picture_ptr = src->s.current_picture_ptr;
2184 dst->s.current_picture = src->s.current_picture;
2185 dst->s.linesize = src->s.linesize;
2186 dst->s.uvlinesize = src->s.uvlinesize;
2187 dst->s.first_field = src->s.first_field;
2189 dst->prev_poc_msb = src->prev_poc_msb;
2190 dst->prev_poc_lsb = src->prev_poc_lsb;
2191 dst->prev_frame_num_offset = src->prev_frame_num_offset;
2192 dst->prev_frame_num = src->prev_frame_num;
2193 dst->short_ref_count = src->short_ref_count;
2195 memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref));
2196 memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref));
2197 memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
2198 memcpy(dst->ref_list, src->ref_list, sizeof(dst->ref_list));
2200 memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff));
2201 memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff));
2205 * computes profile from profile_idc and constraint_set?_flags
2209 * @return profile as defined by FF_PROFILE_H264_*
2211 int ff_h264_get_profile(SPS *sps)
2213 int profile = sps->profile_idc;
2215 switch(sps->profile_idc) {
2216 case FF_PROFILE_H264_BASELINE:
2217 // constraint_set1_flag set to 1
2218 profile |= (sps->constraint_set_flags & 1<<1) ? FF_PROFILE_H264_CONSTRAINED : 0;
2220 case FF_PROFILE_H264_HIGH_10:
2221 case FF_PROFILE_H264_HIGH_422:
2222 case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
2223 // constraint_set3_flag set to 1
2224 profile |= (sps->constraint_set_flags & 1<<3) ? FF_PROFILE_H264_INTRA : 0;
2232 * decodes a slice header.
2233 * This will also call MPV_common_init() and frame_start() as needed.
2235 * @param h h264context
2236 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
2238 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
2240 static int decode_slice_header(H264Context *h, H264Context *h0){
2241 MpegEncContext * const s = &h->s;
2242 MpegEncContext * const s0 = &h0->s;
2243 unsigned int first_mb_in_slice;
2244 unsigned int pps_id;
2245 int num_ref_idx_active_override_flag;
2246 unsigned int slice_type, tmp, i, j;
2247 int default_ref_list_done = 0;
2248 int last_pic_structure;
2250 s->dropable= h->nal_ref_idc == 0;
2252 if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
2253 s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
2254 s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
2256 s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
2257 s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
2260 first_mb_in_slice= get_ue_golomb(&s->gb);
2262 if(first_mb_in_slice == 0){ //FIXME better field boundary detection
2263 if(h0->current_slice && FIELD_PICTURE){
2267 h0->current_slice = 0;
2268 if (!s0->first_field)
2269 s->current_picture_ptr= NULL;
2272 slice_type= get_ue_golomb_31(&s->gb);
2274 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);
2279 h->slice_type_fixed=1;
2281 h->slice_type_fixed=0;
2283 slice_type= golomb_to_pict_type[ slice_type ];
2284 if (slice_type == AV_PICTURE_TYPE_I
2285 || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
2286 default_ref_list_done = 1;
2288 h->slice_type= slice_type;
2289 h->slice_type_nos= slice_type & 3;
2291 s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
2293 pps_id= get_ue_golomb(&s->gb);
2294 if(pps_id>=MAX_PPS_COUNT){
2295 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
2298 if(!h0->pps_buffers[pps_id]) {
2299 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
2302 h->pps= *h0->pps_buffers[pps_id];
2304 if(!h0->sps_buffers[h->pps.sps_id]) {
2305 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
2308 h->sps = *h0->sps_buffers[h->pps.sps_id];
2310 s->avctx->profile = ff_h264_get_profile(&h->sps);
2311 s->avctx->level = h->sps.level_idc;
2312 s->avctx->refs = h->sps.ref_frame_count;
2314 if(h == h0 && h->dequant_coeff_pps != pps_id){
2315 h->dequant_coeff_pps = pps_id;
2316 init_dequant_tables(h);
2319 s->mb_width= h->sps.mb_width;
2320 s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
2322 h->b_stride= s->mb_width*4;
2324 s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
2325 if(h->sps.frame_mbs_only_flag)
2326 s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
2328 s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 7);
2330 if (s->context_initialized
2331 && ( s->width != s->avctx->width || s->height != s->avctx->height
2332 || av_cmp_q(h->sps.sar, s->avctx->sample_aspect_ratio))) {
2334 av_log_missing_feature(s->avctx, "Width/height changing with threads is", 0);
2335 return -1; // width / height changed during parallelized decoding
2338 flush_dpb(s->avctx);
2341 if (!s->context_initialized) {
2343 av_log(h->s.avctx, AV_LOG_ERROR, "Cannot (re-)initialize context during parallel decoding.\n");
2347 avcodec_set_dimensions(s->avctx, s->width, s->height);
2348 s->avctx->sample_aspect_ratio= h->sps.sar;
2349 av_assert0(s->avctx->sample_aspect_ratio.den);
2351 h->s.avctx->coded_width = 16*s->mb_width;
2352 h->s.avctx->coded_height = 16*s->mb_height;
2354 if(h->sps.video_signal_type_present_flag){
2355 s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
2356 if(h->sps.colour_description_present_flag){
2357 s->avctx->color_primaries = h->sps.color_primaries;
2358 s->avctx->color_trc = h->sps.color_trc;
2359 s->avctx->colorspace = h->sps.colorspace;
2363 if(h->sps.timing_info_present_flag){
2364 int64_t den= h->sps.time_scale;
2365 if(h->x264_build < 44U)
2367 av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
2368 h->sps.num_units_in_tick, den, 1<<30);
2371 switch (h->sps.bit_depth_luma) {
2373 s->avctx->pix_fmt = PIX_FMT_YUV420P9;
2376 s->avctx->pix_fmt = PIX_FMT_YUV420P10;
2379 s->avctx->pix_fmt = s->avctx->get_format(s->avctx,
2380 s->avctx->codec->pix_fmts ?
2381 s->avctx->codec->pix_fmts :
2382 s->avctx->color_range == AVCOL_RANGE_JPEG ?
2383 hwaccel_pixfmt_list_h264_jpeg_420 :
2384 ff_hwaccel_pixfmt_list_420);
2387 s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
2389 if (MPV_common_init(s) < 0) {
2390 av_log(h->s.avctx, AV_LOG_ERROR, "MPV_common_init() failed.\n");
2394 h->prev_interlaced_frame = 1;
2396 init_scan_tables(h);
2397 ff_h264_alloc_tables(h);
2399 if (!HAVE_THREADS || !(s->avctx->active_thread_type&FF_THREAD_SLICE)) {
2400 if (context_init(h) < 0) {
2401 av_log(h->s.avctx, AV_LOG_ERROR, "context_init() failed.\n");
2405 for(i = 1; i < s->avctx->thread_count; i++) {
2407 c = h->thread_context[i] = av_malloc(sizeof(H264Context));
2408 memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
2409 memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
2410 c->h264dsp = h->h264dsp;
2413 c->pixel_shift = h->pixel_shift;
2414 init_scan_tables(c);
2415 clone_tables(c, h, i);
2418 for(i = 0; i < s->avctx->thread_count; i++)
2419 if (context_init(h->thread_context[i]) < 0) {
2420 av_log(h->s.avctx, AV_LOG_ERROR, "context_init() failed.\n");
2426 h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
2429 h->mb_aff_frame = 0;
2430 last_pic_structure = s0->picture_structure;
2431 if(h->sps.frame_mbs_only_flag){
2432 s->picture_structure= PICT_FRAME;
2434 if(get_bits1(&s->gb)) { //field_pic_flag
2435 s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
2437 s->picture_structure= PICT_FRAME;
2438 h->mb_aff_frame = h->sps.mb_aff;
2441 h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
2443 if(h0->current_slice == 0){
2444 if(h->frame_num != h->prev_frame_num &&
2445 (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num) < (h->frame_num - h->sps.ref_frame_count))
2446 h->prev_frame_num = h->frame_num - h->sps.ref_frame_count - 1;
2448 while(h->frame_num != h->prev_frame_num &&
2449 h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
2450 Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
2451 av_log(h->s.avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
2452 if (ff_h264_frame_start(h) < 0)
2454 h->prev_frame_num++;
2455 h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
2456 s->current_picture_ptr->frame_num= h->prev_frame_num;
2457 ff_thread_report_progress((AVFrame*)s->current_picture_ptr, INT_MAX, 0);
2458 ff_thread_report_progress((AVFrame*)s->current_picture_ptr, INT_MAX, 1);
2459 ff_generate_sliding_window_mmcos(h);
2460 ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
2461 /* Error concealment: if a ref is missing, copy the previous ref in its place.
2462 * FIXME: avoiding a memcpy would be nice, but ref handling makes many assumptions
2463 * about there being no actual duplicates.
2464 * FIXME: this doesn't copy padding for out-of-frame motion vectors. Given we're
2465 * concealing a lost frame, this probably isn't noticable by comparison, but it should
2467 if (h->short_ref_count) {
2469 av_image_copy(h->short_ref[0]->data, h->short_ref[0]->linesize,
2470 (const uint8_t**)prev->data, prev->linesize,
2471 s->avctx->pix_fmt, s->mb_width*16, s->mb_height*16);
2472 h->short_ref[0]->poc = prev->poc+2;
2474 h->short_ref[0]->frame_num = h->prev_frame_num;
2478 /* See if we have a decoded first field looking for a pair... */
2479 if (s0->first_field) {
2480 assert(s0->current_picture_ptr);
2481 assert(s0->current_picture_ptr->data[0]);
2482 assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
2484 /* figure out if we have a complementary field pair */
2485 if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
2487 * Previous field is unmatched. Don't display it, but let it
2488 * remain for reference if marked as such.
2490 s0->current_picture_ptr = NULL;
2491 s0->first_field = FIELD_PICTURE;
2494 if (h->nal_ref_idc &&
2495 s0->current_picture_ptr->reference &&
2496 s0->current_picture_ptr->frame_num != h->frame_num) {
2498 * This and previous field were reference, but had
2499 * different frame_nums. Consider this field first in
2500 * pair. Throw away previous field except for reference
2503 s0->first_field = 1;
2504 s0->current_picture_ptr = NULL;
2507 /* Second field in complementary pair */
2508 s0->first_field = 0;
2513 /* Frame or first field in a potentially complementary pair */
2514 assert(!s0->current_picture_ptr);
2515 s0->first_field = FIELD_PICTURE;
2518 if(!FIELD_PICTURE || s0->first_field) {
2519 if (ff_h264_frame_start(h) < 0) {
2520 s0->first_field = 0;
2524 ff_release_unused_pictures(s, 0);
2530 s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
2532 assert(s->mb_num == s->mb_width * s->mb_height);
2533 if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
2534 first_mb_in_slice >= s->mb_num){
2535 av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
2538 s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
2539 s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
2540 if (s->picture_structure == PICT_BOTTOM_FIELD)
2541 s->resync_mb_y = s->mb_y = s->mb_y + 1;
2542 assert(s->mb_y < s->mb_height);
2544 if(s->picture_structure==PICT_FRAME){
2545 h->curr_pic_num= h->frame_num;
2546 h->max_pic_num= 1<< h->sps.log2_max_frame_num;
2548 h->curr_pic_num= 2*h->frame_num + 1;
2549 h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
2552 if(h->nal_unit_type == NAL_IDR_SLICE){
2553 get_ue_golomb(&s->gb); /* idr_pic_id */
2556 if(h->sps.poc_type==0){
2557 h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
2559 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
2560 h->delta_poc_bottom= get_se_golomb(&s->gb);
2564 if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
2565 h->delta_poc[0]= get_se_golomb(&s->gb);
2567 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
2568 h->delta_poc[1]= get_se_golomb(&s->gb);
2573 if(h->pps.redundant_pic_cnt_present){
2574 h->redundant_pic_count= get_ue_golomb(&s->gb);
2577 //set defaults, might be overridden a few lines later
2578 h->ref_count[0]= h->pps.ref_count[0];
2579 h->ref_count[1]= h->pps.ref_count[1];
2581 if(h->slice_type_nos != AV_PICTURE_TYPE_I){
2582 if(h->slice_type_nos == AV_PICTURE_TYPE_B){
2583 h->direct_spatial_mv_pred= get_bits1(&s->gb);
2585 num_ref_idx_active_override_flag= get_bits1(&s->gb);
2587 if(num_ref_idx_active_override_flag){
2588 h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
2589 if(h->slice_type_nos==AV_PICTURE_TYPE_B)
2590 h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
2592 if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
2593 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
2594 h->ref_count[0]= h->ref_count[1]= 1;
2598 if(h->slice_type_nos == AV_PICTURE_TYPE_B)
2605 if(!default_ref_list_done){
2606 ff_h264_fill_default_ref_list(h);
2609 if(h->slice_type_nos!=AV_PICTURE_TYPE_I && ff_h264_decode_ref_pic_list_reordering(h) < 0)
2612 if(h->slice_type_nos!=AV_PICTURE_TYPE_I){
2613 s->last_picture_ptr= &h->ref_list[0][0];
2614 ff_copy_picture(&s->last_picture, s->last_picture_ptr);
2616 if(h->slice_type_nos==AV_PICTURE_TYPE_B){
2617 s->next_picture_ptr= &h->ref_list[1][0];
2618 ff_copy_picture(&s->next_picture, s->next_picture_ptr);
2621 if( (h->pps.weighted_pred && h->slice_type_nos == AV_PICTURE_TYPE_P )
2622 || (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== AV_PICTURE_TYPE_B ) )
2623 pred_weight_table(h);
2624 else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== AV_PICTURE_TYPE_B){
2625 implicit_weight_table(h, -1);
2628 for (i = 0; i < 2; i++) {
2629 h->luma_weight_flag[i] = 0;
2630 h->chroma_weight_flag[i] = 0;
2635 ff_h264_decode_ref_pic_marking(h0, &s->gb);
2638 ff_h264_fill_mbaff_ref_list(h);
2640 if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== AV_PICTURE_TYPE_B){
2641 implicit_weight_table(h, 0);
2642 implicit_weight_table(h, 1);
2646 if(h->slice_type_nos==AV_PICTURE_TYPE_B && !h->direct_spatial_mv_pred)
2647 ff_h264_direct_dist_scale_factor(h);
2648 ff_h264_direct_ref_list_init(h);
2650 if( h->slice_type_nos != AV_PICTURE_TYPE_I && h->pps.cabac ){
2651 tmp = get_ue_golomb_31(&s->gb);
2653 av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
2656 h->cabac_init_idc= tmp;
2659 h->last_qscale_diff = 0;
2660 tmp = h->pps.init_qp + get_se_golomb(&s->gb);
2661 if(tmp>51+6*(h->sps.bit_depth_luma-8)){
2662 av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
2666 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2667 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2668 //FIXME qscale / qp ... stuff
2669 if(h->slice_type == AV_PICTURE_TYPE_SP){
2670 get_bits1(&s->gb); /* sp_for_switch_flag */
2672 if(h->slice_type==AV_PICTURE_TYPE_SP || h->slice_type == AV_PICTURE_TYPE_SI){
2673 get_se_golomb(&s->gb); /* slice_qs_delta */
2676 h->deblocking_filter = 1;
2677 h->slice_alpha_c0_offset = 52;
2678 h->slice_beta_offset = 52;
2679 if( h->pps.deblocking_filter_parameters_present ) {
2680 tmp= get_ue_golomb_31(&s->gb);
2682 av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
2685 h->deblocking_filter= tmp;
2686 if(h->deblocking_filter < 2)
2687 h->deblocking_filter^= 1; // 1<->0
2689 if( h->deblocking_filter ) {
2690 h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
2691 h->slice_beta_offset += get_se_golomb(&s->gb) << 1;
2692 if( h->slice_alpha_c0_offset > 104U
2693 || h->slice_beta_offset > 104U){
2694 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);
2700 if( s->avctx->skip_loop_filter >= AVDISCARD_ALL
2701 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != AV_PICTURE_TYPE_I)
2702 ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR && h->slice_type_nos == AV_PICTURE_TYPE_B)
2703 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2704 h->deblocking_filter= 0;
2706 if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
2707 if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
2708 /* Cheat slightly for speed:
2709 Do not bother to deblock across slices. */
2710 h->deblocking_filter = 2;
2712 h0->max_contexts = 1;
2713 if(!h0->single_decode_warning) {
2714 av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
2715 h0->single_decode_warning = 1;
2718 av_log(h->s.avctx, AV_LOG_ERROR, "Deblocking switched inside frame.\n");
2723 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]);
2726 if( h->pps.num_slice_groups > 1 && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
2727 slice_group_change_cycle= get_bits(&s->gb, ?);
2730 h0->last_slice_type = slice_type;
2731 h->slice_num = ++h0->current_slice;
2732 if(h->slice_num >= MAX_SLICES){
2733 av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
2738 int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
2739 for(i=0; i<16; i++){
2741 if(h->ref_list[j][i].data[0]){
2743 uint8_t *base= h->ref_list[j][i].base[0];
2744 for(k=0; k<h->short_ref_count; k++)
2745 if(h->short_ref[k]->base[0] == base){
2749 for(k=0; k<h->long_ref_count; k++)
2750 if(h->long_ref[k] && h->long_ref[k]->base[0] == base){
2751 id_list[i]= h->short_ref_count + k;
2760 ref2frm[i+2]= 4*id_list[i]
2761 +(h->ref_list[j][i].reference&3);
2764 for(i=16; i<48; i++)
2765 ref2frm[i+4]= 4*id_list[(i-16)>>1]
2766 +(h->ref_list[j][i].reference&3);
2769 //FIXME: fix draw_edges+PAFF+frame threads
2770 h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE || (!h->sps.frame_mbs_only_flag && s->avctx->active_thread_type)) ? 0 : 16;
2771 h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
2773 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
2774 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",
2776 (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
2778 av_get_picture_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
2779 pps_id, h->frame_num,
2780 s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
2781 h->ref_count[0], h->ref_count[1],
2783 h->deblocking_filter, h->slice_alpha_c0_offset/2-26, h->slice_beta_offset/2-26,
2785 h->use_weight==1 && h->use_weight_chroma ? "c" : "",
2786 h->slice_type == AV_PICTURE_TYPE_B ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
2793 int ff_h264_get_slice_type(const H264Context *h)
2795 switch (h->slice_type) {
2796 case AV_PICTURE_TYPE_P: return 0;
2797 case AV_PICTURE_TYPE_B: return 1;
2798 case AV_PICTURE_TYPE_I: return 2;
2799 case AV_PICTURE_TYPE_SP: return 3;
2800 case AV_PICTURE_TYPE_SI: return 4;
2807 * @return non zero if the loop filter can be skiped
2809 static int fill_filter_caches(H264Context *h, int mb_type){
2810 MpegEncContext * const s = &h->s;
2811 const int mb_xy= h->mb_xy;
2812 int top_xy, left_xy[2];
2813 int top_type, left_type[2];
2815 top_xy = mb_xy - (s->mb_stride << MB_FIELD);
2817 //FIXME deblocking could skip the intra and nnz parts.
2819 /* Wow, what a mess, why didn't they simplify the interlacing & intra
2820 * stuff, I can't imagine that these complex rules are worth it. */
2822 left_xy[1] = left_xy[0] = mb_xy-1;
2824 const int left_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[mb_xy-1]);
2825 const int curr_mb_field_flag = IS_INTERLACED(mb_type);
2827 if (left_mb_field_flag != curr_mb_field_flag) {
2828 left_xy[0] -= s->mb_stride;
2831 if(curr_mb_field_flag){
2832 top_xy += s->mb_stride & (((s->current_picture.mb_type[top_xy ]>>7)&1)-1);
2834 if (left_mb_field_flag != curr_mb_field_flag) {
2835 left_xy[1] += s->mb_stride;
2840 h->top_mb_xy = top_xy;
2841 h->left_mb_xy[0] = left_xy[0];
2842 h->left_mb_xy[1] = left_xy[1];
2844 //for sufficiently low qp, filtering wouldn't do anything
2845 //this is a conservative estimate: could also check beta_offset and more accurate chroma_qp
2846 int qp_thresh = h->qp_thresh; //FIXME strictly we should store qp_thresh for each mb of a slice
2847 int qp = s->current_picture.qscale_table[mb_xy];
2849 && (left_xy[0]<0 || ((qp + s->current_picture.qscale_table[left_xy[0]] + 1)>>1) <= qp_thresh)
2850 && (top_xy < 0 || ((qp + s->current_picture.qscale_table[top_xy ] + 1)>>1) <= qp_thresh)){
2853 if( (left_xy[0]< 0 || ((qp + s->current_picture.qscale_table[left_xy[1] ] + 1)>>1) <= qp_thresh)
2854 && (top_xy < s->mb_stride || ((qp + s->current_picture.qscale_table[top_xy -s->mb_stride] + 1)>>1) <= qp_thresh))
2859 top_type = s->current_picture.mb_type[top_xy] ;
2860 left_type[0] = s->current_picture.mb_type[left_xy[0]];
2861 left_type[1] = s->current_picture.mb_type[left_xy[1]];
2862 if(h->deblocking_filter == 2){
2863 if(h->slice_table[top_xy ] != h->slice_num) top_type= 0;
2864 if(h->slice_table[left_xy[0] ] != h->slice_num) left_type[0]= left_type[1]= 0;
2866 if(h->slice_table[top_xy ] == 0xFFFF) top_type= 0;
2867 if(h->slice_table[left_xy[0] ] == 0xFFFF) left_type[0]= left_type[1] =0;
2869 h->top_type = top_type ;
2870 h->left_type[0]= left_type[0];
2871 h->left_type[1]= left_type[1];
2873 if(IS_INTRA(mb_type))
2876 AV_COPY64(&h->non_zero_count_cache[0+8*1], &h->non_zero_count[mb_xy][ 0]);
2877 AV_COPY64(&h->non_zero_count_cache[0+8*2], &h->non_zero_count[mb_xy][ 8]);
2878 AV_COPY32(&h->non_zero_count_cache[0+8*5], &h->non_zero_count[mb_xy][16]);
2879 AV_COPY32(&h->non_zero_count_cache[4+8*3], &h->non_zero_count[mb_xy][20]);
2880 AV_COPY64(&h->non_zero_count_cache[0+8*4], &h->non_zero_count[mb_xy][24]);
2882 h->cbp= h->cbp_table[mb_xy];
2886 for(list=0; list<h->list_count; list++){
2889 int16_t (*mv_dst)[2];
2890 int16_t (*mv_src)[2];
2892 if(!USES_LIST(mb_type, list)){
2893 fill_rectangle( h->mv_cache[list][scan8[0]], 4, 4, 8, pack16to32(0,0), 4);
2894 AV_WN32A(&h->ref_cache[list][scan8[ 0]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2895 AV_WN32A(&h->ref_cache[list][scan8[ 2]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2896 AV_WN32A(&h->ref_cache[list][scan8[ 8]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2897 AV_WN32A(&h->ref_cache[list][scan8[10]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2901 ref = &s->current_picture.ref_index[list][4*mb_xy];
2903 int (*ref2frm)[64] = h->ref2frm[ h->slice_num&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2904 AV_WN32A(&h->ref_cache[list][scan8[ 0]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2905 AV_WN32A(&h->ref_cache[list][scan8[ 2]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2907 AV_WN32A(&h->ref_cache[list][scan8[ 8]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2908 AV_WN32A(&h->ref_cache[list][scan8[10]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2911 b_stride = h->b_stride;
2912 mv_dst = &h->mv_cache[list][scan8[0]];
2913 mv_src = &s->current_picture.motion_val[list][4*s->mb_x + 4*s->mb_y*b_stride];
2915 AV_COPY128(mv_dst + 8*y, mv_src + y*b_stride);
2930 //FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
2932 AV_COPY32(&h->non_zero_count_cache[4+8*0], &h->non_zero_count[top_xy][4+3*8]);
2936 h->non_zero_count_cache[3+8*1]= h->non_zero_count[left_xy[0]][7+0*8];
2937 h->non_zero_count_cache[3+8*2]= h->non_zero_count[left_xy[0]][7+1*8];
2938 h->non_zero_count_cache[3+8*3]= h->non_zero_count[left_xy[0]][7+2*8];
2939 h->non_zero_count_cache[3+8*4]= h->non_zero_count[left_xy[0]][7+3*8];
2942 // CAVLC 8x8dct requires NNZ values for residual decoding that differ from what the loop filter needs
2943 if(!CABAC && h->pps.transform_8x8_mode){
2944 if(IS_8x8DCT(top_type)){
2945 h->non_zero_count_cache[4+8*0]=
2946 h->non_zero_count_cache[5+8*0]= h->cbp_table[top_xy] & 4;
2947 h->non_zero_count_cache[6+8*0]=
2948 h->non_zero_count_cache[7+8*0]= h->cbp_table[top_xy] & 8;
2950 if(IS_8x8DCT(left_type[0])){
2951 h->non_zero_count_cache[3+8*1]=
2952 h->non_zero_count_cache[3+8*2]= h->cbp_table[left_xy[0]]&2; //FIXME check MBAFF
2954 if(IS_8x8DCT(left_type[1])){
2955 h->non_zero_count_cache[3+8*3]=
2956 h->non_zero_count_cache[3+8*4]= h->cbp_table[left_xy[1]]&8; //FIXME check MBAFF
2959 if(IS_8x8DCT(mb_type)){
2960 h->non_zero_count_cache[scan8[0 ]]= h->non_zero_count_cache[scan8[1 ]]=
2961 h->non_zero_count_cache[scan8[2 ]]= h->non_zero_count_cache[scan8[3 ]]= h->cbp & 1;
2963 h->non_zero_count_cache[scan8[0+ 4]]= h->non_zero_count_cache[scan8[1+ 4]]=
2964 h->non_zero_count_cache[scan8[2+ 4]]= h->non_zero_count_cache[scan8[3+ 4]]= h->cbp & 2;
2966 h->non_zero_count_cache[scan8[0+ 8]]= h->non_zero_count_cache[scan8[1+ 8]]=
2967 h->non_zero_count_cache[scan8[2+ 8]]= h->non_zero_count_cache[scan8[3+ 8]]= h->cbp & 4;
2969 h->non_zero_count_cache[scan8[0+12]]= h->non_zero_count_cache[scan8[1+12]]=
2970 h->non_zero_count_cache[scan8[2+12]]= h->non_zero_count_cache[scan8[3+12]]= h->cbp & 8;
2974 if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
2976 for(list=0; list<h->list_count; list++){
2977 if(USES_LIST(top_type, list)){
2978 const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
2979 const int b8_xy= 4*top_xy + 2;
2980 int (*ref2frm)[64] = h->ref2frm[ h->slice_table[top_xy]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2981 AV_COPY128(h->mv_cache[list][scan8[0] + 0 - 1*8], s->current_picture.motion_val[list][b_xy + 0]);
2982 h->ref_cache[list][scan8[0] + 0 - 1*8]=
2983 h->ref_cache[list][scan8[0] + 1 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 0]];
2984 h->ref_cache[list][scan8[0] + 2 - 1*8]=
2985 h->ref_cache[list][scan8[0] + 3 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 1]];
2987 AV_ZERO128(h->mv_cache[list][scan8[0] + 0 - 1*8]);
2988 AV_WN32A(&h->ref_cache[list][scan8[0] + 0 - 1*8], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2991 if(!IS_INTERLACED(mb_type^left_type[0])){
2992 if(USES_LIST(left_type[0], list)){
2993 const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
2994 const int b8_xy= 4*left_xy[0] + 1;
2995 int (*ref2frm)[64] = h->ref2frm[ h->slice_table[left_xy[0]]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2996 AV_COPY32(h->mv_cache[list][scan8[0] - 1 + 0 ], s->current_picture.motion_val[list][b_xy + h->b_stride*0]);
2997 AV_COPY32(h->mv_cache[list][scan8[0] - 1 + 8 ], s->current_picture.motion_val[list][b_xy + h->b_stride*1]);
2998 AV_COPY32(h->mv_cache[list][scan8[0] - 1 +16 ], s->current_picture.motion_val[list][b_xy + h->b_stride*2]);
2999 AV_COPY32(h->mv_cache[list][scan8[0] - 1 +24 ], s->current_picture.motion_val[list][b_xy + h->b_stride*3]);
3000 h->ref_cache[list][scan8[0] - 1 + 0 ]=
3001 h->ref_cache[list][scan8[0] - 1 + 8 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 2*0]];
3002 h->ref_cache[list][scan8[0] - 1 +16 ]=
3003 h->ref_cache[list][scan8[0] - 1 +24 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 2*1]];
3005 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 + 0 ]);
3006 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 + 8 ]);
3007 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 +16 ]);
3008 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 +24 ]);
3009 h->ref_cache[list][scan8[0] - 1 + 0 ]=
3010 h->ref_cache[list][scan8[0] - 1 + 8 ]=
3011 h->ref_cache[list][scan8[0] - 1 + 16 ]=
3012 h->ref_cache[list][scan8[0] - 1 + 24 ]= LIST_NOT_USED;
3021 static void loop_filter(H264Context *h, int start_x, int end_x){
3022 MpegEncContext * const s = &h->s;
3023 uint8_t *dest_y, *dest_cb, *dest_cr;
3024 int linesize, uvlinesize, mb_x, mb_y;
3025 const int end_mb_y= s->mb_y + FRAME_MBAFF;
3026 const int old_slice_type= h->slice_type;
3027 const int pixel_shift = h->pixel_shift;
3029 if(h->deblocking_filter) {
3030 for(mb_x= start_x; mb_x<end_x; mb_x++){
3031 for(mb_y=end_mb_y - FRAME_MBAFF; mb_y<= end_mb_y; mb_y++){
3033 mb_xy = h->mb_xy = mb_x + mb_y*s->mb_stride;
3034 h->slice_num= h->slice_table[mb_xy];
3035 mb_type= s->current_picture.mb_type[mb_xy];
3036 h->list_count= h->list_counts[mb_xy];
3039 h->mb_mbaff = h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
3043 dest_y = s->current_picture.data[0] + ((mb_x << pixel_shift) + mb_y * s->linesize ) * 16;
3044 dest_cb = s->current_picture.data[1] + ((mb_x << pixel_shift) + mb_y * s->uvlinesize) * 8;
3045 dest_cr = s->current_picture.data[2] + ((mb_x << pixel_shift) + mb_y * s->uvlinesize) * 8;
3046 //FIXME simplify above
3049 linesize = h->mb_linesize = s->linesize * 2;
3050 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
3051 if(mb_y&1){ //FIXME move out of this function?
3052 dest_y -= s->linesize*15;
3053 dest_cb-= s->uvlinesize*7;
3054 dest_cr-= s->uvlinesize*7;
3057 linesize = h->mb_linesize = s->linesize;
3058 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
3060 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0);
3061 if(fill_filter_caches(h, mb_type))
3063 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
3064 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
3067 ff_h264_filter_mb (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
3069 ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
3074 h->slice_type= old_slice_type;
3076 s->mb_y= end_mb_y - FRAME_MBAFF;
3077 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
3078 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
3081 static void predict_field_decoding_flag(H264Context *h){
3082 MpegEncContext * const s = &h->s;
3083 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
3084 int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
3085 ? s->current_picture.mb_type[mb_xy-1]
3086 : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
3087 ? s->current_picture.mb_type[mb_xy-s->mb_stride]
3089 h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
3093 * Draw edges and report progress for the last MB row.
3095 static void decode_finish_row(H264Context *h){
3096 MpegEncContext * const s = &h->s;
3097 int top = 16*(s->mb_y >> FIELD_PICTURE);
3098 int height = 16 << FRAME_MBAFF;
3099 int deblock_border = (16 + 4) << FRAME_MBAFF;
3100 int pic_height = 16*s->mb_height >> FIELD_PICTURE;
3102 if (h->deblocking_filter) {
3103 if((top + height) >= pic_height)
3104 height += deblock_border;
3106 top -= deblock_border;
3109 if (top >= pic_height || (top + height) < h->emu_edge_height)
3112 height = FFMIN(height, pic_height - top);
3113 if (top < h->emu_edge_height) {
3114 height = top+height;
3118 ff_draw_horiz_band(s, top, height);
3120 if (s->dropable) return;
3122 ff_thread_report_progress((AVFrame*)s->current_picture_ptr, top + height - 1,
3123 s->picture_structure==PICT_BOTTOM_FIELD);
3126 static int decode_slice(struct AVCodecContext *avctx, void *arg){
3127 H264Context *h = *(void**)arg;
3128 MpegEncContext * const s = &h->s;
3129 const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
3130 int lf_x_start = s->mb_x;
3134 h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
3135 (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
3137 if( h->pps.cabac ) {
3139 align_get_bits( &s->gb );
3142 ff_init_cabac_states( &h->cabac);
3143 ff_init_cabac_decoder( &h->cabac,
3144 s->gb.buffer + get_bits_count(&s->gb)/8,
3145 (get_bits_left(&s->gb) + 7)/8);
3147 ff_h264_init_cabac_states(h);
3151 int ret = ff_h264_decode_mb_cabac(h);
3153 //STOP_TIMER("decode_mb_cabac")
3155 if(ret>=0) ff_h264_hl_decode_mb(h);
3157 if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
3160 ret = ff_h264_decode_mb_cabac(h);
3162 if(ret>=0) ff_h264_hl_decode_mb(h);
3165 eos = get_cabac_terminate( &h->cabac );
3167 if((s->workaround_bugs & FF_BUG_TRUNCATED) && h->cabac.bytestream > h->cabac.bytestream_end + 2){
3168 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);
3169 if (s->mb_x >= lf_x_start) loop_filter(h, lf_x_start, s->mb_x + 1);
3172 if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
3173 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);
3174 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);
3178 if( ++s->mb_x >= s->mb_width ) {
3179 loop_filter(h, lf_x_start, s->mb_x);
3180 s->mb_x = lf_x_start = 0;
3181 decode_finish_row(h);
3183 if(FIELD_OR_MBAFF_PICTURE) {
3185 if(FRAME_MBAFF && s->mb_y < s->mb_height)
3186 predict_field_decoding_flag(h);
3190 if( eos || s->mb_y >= s->mb_height ) {
3191 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
3192 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);
3193 if (s->mb_x > lf_x_start) loop_filter(h, lf_x_start, s->mb_x);
3200 int ret = ff_h264_decode_mb_cavlc(h);
3202 if(ret>=0) ff_h264_hl_decode_mb(h);
3204 if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
3206 ret = ff_h264_decode_mb_cavlc(h);
3208 if(ret>=0) ff_h264_hl_decode_mb(h);
3213 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
3214 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);
3218 if(++s->mb_x >= s->mb_width){
3219 loop_filter(h, lf_x_start, s->mb_x);
3220 s->mb_x = lf_x_start = 0;
3221 decode_finish_row(h);
3223 if(FIELD_OR_MBAFF_PICTURE) {
3225 if(FRAME_MBAFF && s->mb_y < s->mb_height)
3226 predict_field_decoding_flag(h);
3228 if(s->mb_y >= s->mb_height){
3229 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
3231 if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
3232 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);
3236 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);
3243 if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
3244 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
3245 if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
3246 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);
3247 if (s->mb_x > lf_x_start) loop_filter(h, lf_x_start, s->mb_x);
3251 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);
3260 for(;s->mb_y < s->mb_height; s->mb_y++){
3261 for(;s->mb_x < s->mb_width; s->mb_x++){
3262 int ret= decode_mb(h);
3264 ff_h264_hl_decode_mb(h);
3267 av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
3268 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);
3273 if(++s->mb_x >= s->mb_width){
3275 if(++s->mb_y >= s->mb_height){
3276 if(get_bits_count(s->gb) == s->gb.size_in_bits){
3277 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);
3281 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);
3288 if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
3289 if(get_bits_count(s->gb) == s->gb.size_in_bits){
3290 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);
3294 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);
3301 ff_draw_horiz_band(s, 16*s->mb_y, 16);
3304 return -1; //not reached
3308 * Call decode_slice() for each context.
3310 * @param h h264 master context
3311 * @param context_count number of contexts to execute
3313 static void execute_decode_slices(H264Context *h, int context_count){
3314 MpegEncContext * const s = &h->s;
3315 AVCodecContext * const avctx= s->avctx;
3319 if (s->avctx->hwaccel)
3321 if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
3323 if(context_count == 1) {
3324 decode_slice(avctx, &h);
3326 for(i = 1; i < context_count; i++) {
3327 hx = h->thread_context[i];
3328 hx->s.error_recognition = avctx->error_recognition;
3329 hx->s.error_count = 0;
3332 avctx->execute(avctx, (void *)decode_slice,
3333 h->thread_context, NULL, context_count, sizeof(void*));
3335 /* pull back stuff from slices to master context */
3336 hx = h->thread_context[context_count - 1];
3337 s->mb_x = hx->s.mb_x;
3338 s->mb_y = hx->s.mb_y;
3339 s->dropable = hx->s.dropable;
3340 s->picture_structure = hx->s.picture_structure;
3341 for(i = 1; i < context_count; i++)
3342 h->s.error_count += h->thread_context[i]->s.error_count;
3347 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
3348 MpegEncContext * const s = &h->s;
3349 AVCodecContext * const avctx= s->avctx;
3350 H264Context *hx; ///< thread context
3354 int pass = !(avctx->active_thread_type & FF_THREAD_FRAME);
3355 int nals_needed=0; ///< number of NALs that need decoding before the next frame thread starts
3358 h->max_contexts = (HAVE_THREADS && (s->avctx->active_thread_type&FF_THREAD_SLICE)) ? avctx->thread_count : 1;
3359 if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
3360 h->current_slice = 0;
3361 if (!s->first_field)
3362 s->current_picture_ptr= NULL;
3363 ff_h264_reset_sei(h);
3366 for(;pass <= 1;pass++){
3369 next_avc = h->is_avc ? 0 : buf_size;
3379 if(buf_index >= next_avc) {
3380 if(buf_index >= buf_size) break;
3382 for(i = 0; i < h->nal_length_size; i++)
3383 nalsize = (nalsize << 8) | buf[buf_index++];
3384 if(nalsize <= 0 || nalsize > buf_size - buf_index){
3385 av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
3388 next_avc= buf_index + nalsize;
3390 // start code prefix search
3391 for(; buf_index + 3 < next_avc; buf_index++){
3392 // This should always succeed in the first iteration.
3393 if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
3397 if(buf_index+3 >= buf_size) break;
3400 if(buf_index >= next_avc) continue;
3403 hx = h->thread_context[context_count];
3405 ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index);
3406 if (ptr==NULL || dst_length < 0){
3409 i= buf_index + consumed;
3410 if((s->workaround_bugs & FF_BUG_AUTODETECT) && i+3<next_avc &&
3411 buf[i]==0x00 && buf[i+1]==0x00 && buf[i+2]==0x01 && buf[i+3]==0xE0)
3412 s->workaround_bugs |= FF_BUG_TRUNCATED;
3414 if(!(s->workaround_bugs & FF_BUG_TRUNCATED)){
3415 while(ptr[dst_length - 1] == 0 && dst_length > 0)
3418 bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
3420 if(s->avctx->debug&FF_DEBUG_STARTCODE){
3421 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);
3424 if (h->is_avc && (nalsize != consumed) && nalsize){
3425 av_log(h->s.avctx, AV_LOG_DEBUG, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
3428 buf_index += consumed;
3432 // packets can sometimes contain multiple PPS/SPS
3433 // e.g. two PAFF field pictures in one packet, or a demuxer which splits NALs strangely
3434 // if so, when frame threading we can't start the next thread until we've read all of them
3435 switch (hx->nal_unit_type) {
3438 nals_needed = nal_index;
3443 //FIXME do not discard SEI id
3444 if(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc == 0)
3449 switch(hx->nal_unit_type){
3451 if (h->nal_unit_type != NAL_IDR_SLICE) {
3452 av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
3455 idr(h); //FIXME ensure we don't loose some frames if there is reordering
3457 init_get_bits(&hx->s.gb, ptr, bit_length);
3459 hx->inter_gb_ptr= &hx->s.gb;
3460 hx->s.data_partitioning = 0;
3462 if((err = decode_slice_header(hx, h)))
3465 s->current_picture_ptr->key_frame |=
3466 (hx->nal_unit_type == NAL_IDR_SLICE) ||
3467 (h->sei_recovery_frame_cnt >= 0);
3469 if (h->current_slice == 1) {
3470 if(!(s->flags2 & CODEC_FLAG2_CHUNKS)) {
3471 decode_postinit(h, nal_index >= nals_needed);
3474 if (s->avctx->hwaccel && s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
3476 if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
3477 ff_vdpau_h264_picture_start(s);
3480 if(hx->redundant_pic_count==0
3481 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
3482 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=AV_PICTURE_TYPE_B)
3483 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==AV_PICTURE_TYPE_I)
3484 && avctx->skip_frame < AVDISCARD_ALL){
3485 if(avctx->hwaccel) {
3486 if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0)
3489 if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
3490 static const uint8_t start_code[] = {0x00, 0x00, 0x01};
3491 ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
3492 ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
3498 init_get_bits(&hx->s.gb, ptr, bit_length);
3500 hx->inter_gb_ptr= NULL;
3502 if ((err = decode_slice_header(hx, h)) < 0)
3505 hx->s.data_partitioning = 1;
3509 init_get_bits(&hx->intra_gb, ptr, bit_length);
3510 hx->intra_gb_ptr= &hx->intra_gb;
3513 init_get_bits(&hx->inter_gb, ptr, bit_length);
3514 hx->inter_gb_ptr= &hx->inter_gb;
3516 if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
3517 && s->context_initialized
3518 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
3519 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=AV_PICTURE_TYPE_B)
3520 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==AV_PICTURE_TYPE_I)
3521 && avctx->skip_frame < AVDISCARD_ALL)
3525 init_get_bits(&s->gb, ptr, bit_length);
3526 ff_h264_decode_sei(h);
3529 init_get_bits(&s->gb, ptr, bit_length);
3530 ff_h264_decode_seq_parameter_set(h);
3532 if(s->flags& CODEC_FLAG_LOW_DELAY)
3535 if(avctx->has_b_frames < 2)
3536 avctx->has_b_frames= !s->low_delay;
3538 if (avctx->bits_per_raw_sample != h->sps.bit_depth_luma) {
3539 if (h->sps.bit_depth_luma >= 8 && h->sps.bit_depth_luma <= 10) {
3540 avctx->bits_per_raw_sample = h->sps.bit_depth_luma;
3541 h->pixel_shift = h->sps.bit_depth_luma > 8;
3543 ff_h264dsp_init(&h->h264dsp, h->sps.bit_depth_luma);
3544 ff_h264_pred_init(&h->hpc, s->codec_id, h->sps.bit_depth_luma);
3545 dsputil_init(&s->dsp, s->avctx);
3547 av_log(avctx, AV_LOG_DEBUG, "Unsupported bit depth: %d\n", h->sps.bit_depth_luma);
3553 init_get_bits(&s->gb, ptr, bit_length);
3555 ff_h264_decode_picture_parameter_set(h, bit_length);
3559 case NAL_END_SEQUENCE:
3560 case NAL_END_STREAM:
3561 case NAL_FILLER_DATA:
3563 case NAL_AUXILIARY_SLICE:
3566 av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", hx->nal_unit_type, bit_length);
3569 if(context_count == h->max_contexts) {
3570 execute_decode_slices(h, context_count);
3575 av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
3577 /* Slice could not be decoded in parallel mode, copy down
3578 * NAL unit stuff to context 0 and restart. Note that
3579 * rbsp_buffer is not transferred, but since we no longer
3580 * run in parallel mode this should not be an issue. */
3581 h->nal_unit_type = hx->nal_unit_type;
3582 h->nal_ref_idc = hx->nal_ref_idc;
3589 execute_decode_slices(h, context_count);
3594 * returns the number of bytes consumed for building the current frame
3596 static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
3597 if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
3598 if(pos+10>buf_size) pos=buf_size; // oops ;)
3603 static int decode_frame(AVCodecContext *avctx,
3604 void *data, int *data_size,
3607 const uint8_t *buf = avpkt->data;
3608 int buf_size = avpkt->size;
3609 H264Context *h = avctx->priv_data;
3610 MpegEncContext *s = &h->s;
3611 AVFrame *pict = data;
3614 s->flags= avctx->flags;
3615 s->flags2= avctx->flags2;
3617 /* end of stream, output what is still in the buffers */
3619 if (buf_size == 0) {
3623 s->current_picture_ptr = NULL;
3625 //FIXME factorize this with the output code below
3626 out = h->delayed_pic[0];
3628 for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
3629 if(h->delayed_pic[i]->poc < out->poc){
3630 out = h->delayed_pic[i];
3634 for(i=out_idx; h->delayed_pic[i]; i++)
3635 h->delayed_pic[i] = h->delayed_pic[i+1];
3638 *data_size = sizeof(AVFrame);
3639 *pict= *(AVFrame*)out;
3645 buf_index=decode_nal_units(h, buf, buf_size);
3649 if (!s->current_picture_ptr && h->nal_unit_type == NAL_END_SEQUENCE) {
3654 if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
3655 if (avctx->skip_frame >= AVDISCARD_NONREF)
3657 av_log(avctx, AV_LOG_ERROR, "no frame!\n");
3661 if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
3663 if(s->flags2 & CODEC_FLAG2_CHUNKS) decode_postinit(h, 1);
3667 if (!h->next_output_pic) {
3668 /* Wait for second field. */
3672 *data_size = sizeof(AVFrame);
3673 *pict = *(AVFrame*)h->next_output_pic;
3677 assert(pict->data[0] || !*data_size);
3678 ff_print_debug_info(s, pict);
3679 //printf("out %d\n", (int)pict->data[0]);
3681 return get_consumed_bytes(s, buf_index, buf_size);
3684 static inline void fill_mb_avail(H264Context *h){
3685 MpegEncContext * const s = &h->s;
3686 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
3689 h->mb_avail[0]= s->mb_x && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num;
3690 h->mb_avail[1]= h->slice_table[mb_xy - s->mb_stride ] == h->slice_num;
3691 h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num;
3697 h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
3698 h->mb_avail[4]= 1; //FIXME move out
3699 h->mb_avail[5]= 0; //FIXME move out
3707 #define SIZE (COUNT*40)
3713 // int int_temp[10000];
3715 AVCodecContext avctx;
3717 dsputil_init(&dsp, &avctx);
3719 init_put_bits(&pb, temp, SIZE);
3720 printf("testing unsigned exp golomb\n");
3721 for(i=0; i<COUNT; i++){
3723 set_ue_golomb(&pb, i);
3724 STOP_TIMER("set_ue_golomb");
3726 flush_put_bits(&pb);
3728 init_get_bits(&gb, temp, 8*SIZE);
3729 for(i=0; i<COUNT; i++){
3732 s= show_bits(&gb, 24);
3735 j= get_ue_golomb(&gb);
3737 printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
3740 STOP_TIMER("get_ue_golomb");
3744 init_put_bits(&pb, temp, SIZE);
3745 printf("testing signed exp golomb\n");
3746 for(i=0; i<COUNT; i++){
3748 set_se_golomb(&pb, i - COUNT/2);
3749 STOP_TIMER("set_se_golomb");
3751 flush_put_bits(&pb);
3753 init_get_bits(&gb, temp, 8*SIZE);
3754 for(i=0; i<COUNT; i++){
3757 s= show_bits(&gb, 24);
3760 j= get_se_golomb(&gb);
3761 if(j != i - COUNT/2){
3762 printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
3765 STOP_TIMER("get_se_golomb");
3769 printf("testing 4x4 (I)DCT\n");
3772 uint8_t src[16], ref[16];
3773 uint64_t error= 0, max_error=0;
3775 for(i=0; i<COUNT; i++){
3777 // printf("%d %d %d\n", r1, r2, (r2-r1)*16);
3778 for(j=0; j<16; j++){
3779 ref[j]= random()%255;
3780 src[j]= random()%255;
3783 h264_diff_dct_c(block, src, ref, 4);
3786 for(j=0; j<16; j++){
3787 // printf("%d ", block[j]);
3788 block[j]= block[j]*4;
3789 if(j&1) block[j]= (block[j]*4 + 2)/5;
3790 if(j&4) block[j]= (block[j]*4 + 2)/5;
3794 h->h264dsp.h264_idct_add(ref, block, 4);
3795 /* for(j=0; j<16; j++){
3796 printf("%d ", ref[j]);
3800 for(j=0; j<16; j++){
3801 int diff= FFABS(src[j] - ref[j]);
3804 max_error= FFMAX(max_error, diff);
3807 printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
3808 printf("testing quantizer\n");
3809 for(qp=0; qp<52; qp++){
3811 src1_block[i]= src2_block[i]= random()%255;
3814 printf("Testing NAL layer\n");
3816 uint8_t bitstream[COUNT];
3817 uint8_t nal[COUNT*2];
3819 memset(&h, 0, sizeof(H264Context));
3821 for(i=0; i<COUNT; i++){
3829 for(j=0; j<COUNT; j++){
3830 bitstream[j]= (random() % 255) + 1;
3833 for(j=0; j<zeros; j++){
3834 int pos= random() % COUNT;
3835 while(bitstream[pos] == 0){
3844 nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
3846 printf("encoding failed\n");
3850 out= ff_h264_decode_nal(&h, nal, &out_length, &consumed, nal_length);
3854 if(out_length != COUNT){
3855 printf("incorrect length %d %d\n", out_length, COUNT);
3859 if(consumed != nal_length){
3860 printf("incorrect consumed length %d %d\n", nal_length, consumed);
3864 if(memcmp(bitstream, out, COUNT)){
3865 printf("mismatch\n");
3871 printf("Testing RBSP\n");
3879 av_cold void ff_h264_free_context(H264Context *h)
3883 free_tables(h, 1); //FIXME cleanup init stuff perhaps
3885 for(i = 0; i < MAX_SPS_COUNT; i++)
3886 av_freep(h->sps_buffers + i);
3888 for(i = 0; i < MAX_PPS_COUNT; i++)
3889 av_freep(h->pps_buffers + i);
3892 av_cold int ff_h264_decode_end(AVCodecContext *avctx)
3894 H264Context *h = avctx->priv_data;
3895 MpegEncContext *s = &h->s;
3897 ff_h264_free_context(h);
3901 // memset(h, 0, sizeof(H264Context));
3906 static const AVProfile profiles[] = {
3907 { FF_PROFILE_H264_BASELINE, "Baseline" },
3908 { FF_PROFILE_H264_CONSTRAINED_BASELINE, "Constrained Baseline" },
3909 { FF_PROFILE_H264_MAIN, "Main" },
3910 { FF_PROFILE_H264_EXTENDED, "Extended" },
3911 { FF_PROFILE_H264_HIGH, "High" },
3912 { FF_PROFILE_H264_HIGH_10, "High 10" },
3913 { FF_PROFILE_H264_HIGH_10_INTRA, "High 10 Intra" },
3914 { FF_PROFILE_H264_HIGH_422, "High 4:2:2" },
3915 { FF_PROFILE_H264_HIGH_422_INTRA, "High 4:2:2 Intra" },
3916 { FF_PROFILE_H264_HIGH_444, "High 4:4:4" },
3917 { FF_PROFILE_H264_HIGH_444_PREDICTIVE, "High 4:4:4 Predictive" },
3918 { FF_PROFILE_H264_HIGH_444_INTRA, "High 4:4:4 Intra" },
3919 { FF_PROFILE_H264_CAVLC_444, "CAVLC 4:4:4" },
3920 { FF_PROFILE_UNKNOWN },
3923 AVCodec ff_h264_decoder = {
3927 sizeof(H264Context),
3928 ff_h264_decode_init,
3932 /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY |
3933 CODEC_CAP_SLICE_THREADS | CODEC_CAP_FRAME_THREADS,
3935 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
3936 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
3937 .update_thread_context = ONLY_IF_THREADS_ENABLED(decode_update_thread_context),
3938 .profiles = NULL_IF_CONFIG_SMALL(profiles),
3941 #if CONFIG_H264_VDPAU_DECODER
3942 AVCodec ff_h264_vdpau_decoder = {
3946 sizeof(H264Context),
3947 ff_h264_decode_init,
3951 CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3953 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
3954 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_VDPAU_H264, PIX_FMT_NONE},
3955 .profiles = NULL_IF_CONFIG_SMALL(profiles),