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"
39 #include "vdpau_internal.h"
40 #include "libavutil/avassert.h"
47 static const uint8_t rem6[QP_MAX_NUM+1]={
48 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,
51 static const uint8_t div6[QP_MAX_NUM+1]={
52 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,
55 static const enum PixelFormat hwaccel_pixfmt_list_h264_jpeg_420[] = {
62 void ff_h264_write_back_intra_pred_mode(H264Context *h){
63 int8_t *mode= h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
65 AV_COPY32(mode, h->intra4x4_pred_mode_cache + 4 + 8*4);
66 mode[4]= h->intra4x4_pred_mode_cache[7+8*3];
67 mode[5]= h->intra4x4_pred_mode_cache[7+8*2];
68 mode[6]= h->intra4x4_pred_mode_cache[7+8*1];
72 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
74 int ff_h264_check_intra4x4_pred_mode(H264Context *h){
75 MpegEncContext * const s = &h->s;
76 static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0};
77 static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED};
80 if(!(h->top_samples_available&0x8000)){
82 int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ];
84 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);
87 h->intra4x4_pred_mode_cache[scan8[0] + i]= status;
92 if((h->left_samples_available&0x8888)!=0x8888){
93 static const int mask[4]={0x8000,0x2000,0x80,0x20};
95 if(!(h->left_samples_available&mask[i])){
96 int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ];
98 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);
101 h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status;
108 } //FIXME cleanup like ff_h264_check_intra_pred_mode
111 * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks.
113 int ff_h264_check_intra_pred_mode(H264Context *h, int mode){
114 MpegEncContext * const s = &h->s;
115 static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
116 static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
119 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);
123 if(!(h->top_samples_available&0x8000)){
126 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);
131 if((h->left_samples_available&0x8080) != 0x8080){
133 if(h->left_samples_available&0x8080){ //mad cow disease mode, aka MBAFF + constrained_intra_pred
134 mode= ALZHEIMER_DC_L0T_PRED8x8 + (!(h->left_samples_available&0x8000)) + 2*(mode == DC_128_PRED8x8);
137 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);
145 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length){
150 // src[0]&0x80; //forbidden bit
151 h->nal_ref_idc= src[0]>>5;
152 h->nal_unit_type= src[0]&0x1F;
156 #if HAVE_FAST_UNALIGNED
159 for(i=0; i+1<length; i+=9){
160 if(!((~AV_RN64A(src+i) & (AV_RN64A(src+i) - 0x0100010001000101ULL)) & 0x8000800080008080ULL))
163 for(i=0; i+1<length; i+=5){
164 if(!((~AV_RN32A(src+i) & (AV_RN32A(src+i) - 0x01000101U)) & 0x80008080U))
167 if(i>0 && !src[i]) i--;
171 for(i=0; i+1<length; i+=2){
173 if(i>0 && src[i-1]==0) i--;
175 if(i+2<length && src[i+1]==0 && src[i+2]<=3){
177 /* startcode, so we must be past the end */
185 if(i>=length-1){ //no escaped 0
187 *consumed= length+1; //+1 for the header
191 bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; // use second escape buffer for inter data
192 av_fast_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+FF_INPUT_BUFFER_PADDING_SIZE);
193 dst= h->rbsp_buffer[bufidx];
199 //printf("decoding esc\n");
203 //remove escapes (very rare 1:2^22)
205 dst[di++]= src[si++];
206 dst[di++]= src[si++];
207 }else if(src[si]==0 && src[si+1]==0){
208 if(src[si+2]==3){ //escape
213 }else //next start code
217 dst[di++]= src[si++];
220 dst[di++]= src[si++];
223 memset(dst+di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
226 *consumed= si + 1;//+1 for the header
227 //FIXME store exact number of bits in the getbitcontext (it is needed for decoding)
232 * Identify the exact end of the bitstream
233 * @return the length of the trailing, or 0 if damaged
235 static int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src){
239 tprintf(h->s.avctx, "rbsp trailing %X\n", v);
250 * DCT transforms the 16 dc values.
251 * @param qp quantization parameter ??? FIXME
253 static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){
254 // const int qmul= dequant_coeff[qp][0];
256 int temp[16]; //FIXME check if this is a good idea
257 static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride};
258 static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride};
261 const int offset= y_offset[i];
262 const int z0= block[offset+stride*0] + block[offset+stride*4];
263 const int z1= block[offset+stride*0] - block[offset+stride*4];
264 const int z2= block[offset+stride*1] - block[offset+stride*5];
265 const int z3= block[offset+stride*1] + block[offset+stride*5];
274 const int offset= x_offset[i];
275 const int z0= temp[4*0+i] + temp[4*2+i];
276 const int z1= temp[4*0+i] - temp[4*2+i];
277 const int z2= temp[4*1+i] - temp[4*3+i];
278 const int z3= temp[4*1+i] + temp[4*3+i];
280 block[stride*0 +offset]= (z0 + z3)>>1;
281 block[stride*2 +offset]= (z1 + z2)>>1;
282 block[stride*8 +offset]= (z1 - z2)>>1;
283 block[stride*10+offset]= (z0 - z3)>>1;
292 static void chroma_dc_dct_c(DCTELEM *block){
293 const int stride= 16*2;
294 const int xStride= 16;
297 a= block[stride*0 + xStride*0];
298 b= block[stride*0 + xStride*1];
299 c= block[stride*1 + xStride*0];
300 d= block[stride*1 + xStride*1];
307 block[stride*0 + xStride*0]= (a+c);
308 block[stride*0 + xStride*1]= (e+b);
309 block[stride*1 + xStride*0]= (a-c);
310 block[stride*1 + xStride*1]= (e-b);
314 static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list,
315 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
316 int src_x_offset, int src_y_offset,
317 qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op,
319 MpegEncContext * const s = &h->s;
320 const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8;
321 int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8;
322 const int luma_xy= (mx&3) + ((my&3)<<2);
323 uint8_t * src_y = pic->data[0] + ((mx>>2) << pixel_shift) + (my>>2)*h->mb_linesize;
324 uint8_t * src_cb, * src_cr;
325 int extra_width= h->emu_edge_width;
326 int extra_height= h->emu_edge_height;
328 const int full_mx= mx>>2;
329 const int full_my= my>>2;
330 const int pic_width = 16*s->mb_width;
331 const int pic_height = 16*s->mb_height >> MB_FIELD;
333 if(mx&7) extra_width -= 3;
334 if(my&7) extra_height -= 3;
336 if( full_mx < 0-extra_width
337 || full_my < 0-extra_height
338 || full_mx + 16/*FIXME*/ > pic_width + extra_width
339 || full_my + 16/*FIXME*/ > pic_height + extra_height){
340 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);
341 src_y= s->edge_emu_buffer + (2 << pixel_shift) + 2*h->mb_linesize;
345 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); //FIXME try variable height perhaps?
347 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
350 if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
353 // chroma offset when predicting from a field of opposite parity
354 my += 2 * ((s->mb_y & 1) - (pic->reference - 1));
355 emu |= (my>>3) < 0 || (my>>3) + 8 >= (pic_height>>1);
357 src_cb= pic->data[1] + ((mx>>3) << pixel_shift) + (my>>3)*h->mb_uvlinesize;
358 src_cr= pic->data[2] + ((mx>>3) << pixel_shift) + (my>>3)*h->mb_uvlinesize;
361 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);
362 src_cb= s->edge_emu_buffer;
364 chroma_op(dest_cb, src_cb, h->mb_uvlinesize, chroma_height, mx&7, my&7);
367 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);
368 src_cr= s->edge_emu_buffer;
370 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, chroma_height, mx&7, my&7);
373 static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta,
374 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
375 int x_offset, int y_offset,
376 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
377 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
378 int list0, int list1, int pixel_shift){
379 MpegEncContext * const s = &h->s;
380 qpel_mc_func *qpix_op= qpix_put;
381 h264_chroma_mc_func chroma_op= chroma_put;
383 dest_y += (2*x_offset << pixel_shift) + 2*y_offset*h-> mb_linesize;
384 dest_cb += ( x_offset << pixel_shift) + y_offset*h->mb_uvlinesize;
385 dest_cr += ( x_offset << pixel_shift) + y_offset*h->mb_uvlinesize;
386 x_offset += 8*s->mb_x;
387 y_offset += 8*(s->mb_y >> MB_FIELD);
390 Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ];
391 mc_dir_part(h, ref, n, square, chroma_height, delta, 0,
392 dest_y, dest_cb, dest_cr, x_offset, y_offset,
393 qpix_op, chroma_op, pixel_shift);
396 chroma_op= chroma_avg;
400 Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ];
401 mc_dir_part(h, ref, n, square, chroma_height, delta, 1,
402 dest_y, dest_cb, dest_cr, x_offset, y_offset,
403 qpix_op, chroma_op, pixel_shift);
407 static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta,
408 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
409 int x_offset, int y_offset,
410 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
411 h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op,
412 h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg,
413 int list0, int list1, int pixel_shift){
414 MpegEncContext * const s = &h->s;
416 dest_y += (2*x_offset << pixel_shift) + 2*y_offset*h-> mb_linesize;
417 dest_cb += ( x_offset << pixel_shift) + y_offset*h->mb_uvlinesize;
418 dest_cr += ( x_offset << pixel_shift) + y_offset*h->mb_uvlinesize;
419 x_offset += 8*s->mb_x;
420 y_offset += 8*(s->mb_y >> MB_FIELD);
423 /* don't optimize for luma-only case, since B-frames usually
424 * use implicit weights => chroma too. */
425 uint8_t *tmp_cb = s->obmc_scratchpad;
426 uint8_t *tmp_cr = s->obmc_scratchpad + (8 << pixel_shift);
427 uint8_t *tmp_y = s->obmc_scratchpad + 8*h->mb_uvlinesize;
428 int refn0 = h->ref_cache[0][ scan8[n] ];
429 int refn1 = h->ref_cache[1][ scan8[n] ];
431 mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0,
432 dest_y, dest_cb, dest_cr,
433 x_offset, y_offset, qpix_put, chroma_put, pixel_shift);
434 mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1,
435 tmp_y, tmp_cb, tmp_cr,
436 x_offset, y_offset, qpix_put, chroma_put, pixel_shift);
438 if(h->use_weight == 2){
439 int weight0 = h->implicit_weight[refn0][refn1][s->mb_y&1];
440 int weight1 = 64 - weight0;
441 luma_weight_avg( dest_y, tmp_y, h-> mb_linesize, 5, weight0, weight1, 0);
442 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, 5, weight0, weight1, 0);
443 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, 5, weight0, weight1, 0);
445 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, h->luma_log2_weight_denom,
446 h->luma_weight[refn0][0][0] , h->luma_weight[refn1][1][0],
447 h->luma_weight[refn0][0][1] + h->luma_weight[refn1][1][1]);
448 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
449 h->chroma_weight[refn0][0][0][0] , h->chroma_weight[refn1][1][0][0],
450 h->chroma_weight[refn0][0][0][1] + h->chroma_weight[refn1][1][0][1]);
451 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
452 h->chroma_weight[refn0][0][1][0] , h->chroma_weight[refn1][1][1][0],
453 h->chroma_weight[refn0][0][1][1] + h->chroma_weight[refn1][1][1][1]);
456 int list = list1 ? 1 : 0;
457 int refn = h->ref_cache[list][ scan8[n] ];
458 Picture *ref= &h->ref_list[list][refn];
459 mc_dir_part(h, ref, n, square, chroma_height, delta, list,
460 dest_y, dest_cb, dest_cr, x_offset, y_offset,
461 qpix_put, chroma_put, pixel_shift);
463 luma_weight_op(dest_y, h->mb_linesize, h->luma_log2_weight_denom,
464 h->luma_weight[refn][list][0], h->luma_weight[refn][list][1]);
465 if(h->use_weight_chroma){
466 chroma_weight_op(dest_cb, h->mb_uvlinesize, h->chroma_log2_weight_denom,
467 h->chroma_weight[refn][list][0][0], h->chroma_weight[refn][list][0][1]);
468 chroma_weight_op(dest_cr, h->mb_uvlinesize, h->chroma_log2_weight_denom,
469 h->chroma_weight[refn][list][1][0], h->chroma_weight[refn][list][1][1]);
474 static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta,
475 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
476 int x_offset, int y_offset,
477 qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put,
478 qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg,
479 h264_weight_func *weight_op, h264_biweight_func *weight_avg,
480 int list0, int list1, int pixel_shift){
481 if((h->use_weight==2 && list0 && list1
482 && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ][h->s.mb_y&1] != 32))
484 mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
485 x_offset, y_offset, qpix_put, chroma_put,
486 weight_op[0], weight_op[3], weight_avg[0],
487 weight_avg[3], list0, list1, pixel_shift);
489 mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr,
490 x_offset, y_offset, qpix_put, chroma_put, qpix_avg,
491 chroma_avg, list0, list1, pixel_shift);
494 static inline void prefetch_motion(H264Context *h, int list, int pixel_shift){
495 /* fetch pixels for estimated mv 4 macroblocks ahead
496 * optimized for 64byte cache lines */
497 MpegEncContext * const s = &h->s;
498 const int refn = h->ref_cache[list][scan8[0]];
500 const int mx= (h->mv_cache[list][scan8[0]][0]>>2) + 16*s->mb_x + 8;
501 const int my= (h->mv_cache[list][scan8[0]][1]>>2) + 16*s->mb_y;
502 uint8_t **src= h->ref_list[list][refn].data;
503 int off= (mx << pixel_shift) + (my + (s->mb_x&3)*4)*h->mb_linesize + (64 << pixel_shift);
504 s->dsp.prefetch(src[0]+off, s->linesize, 4);
505 off= ((mx>>1) << pixel_shift) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + (64 << pixel_shift);
506 s->dsp.prefetch(src[1]+off, src[2]-src[1], 2);
510 static av_always_inline void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
511 qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put),
512 qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg),
513 h264_weight_func *weight_op, h264_biweight_func *weight_avg,
515 MpegEncContext * const s = &h->s;
516 const int mb_xy= h->mb_xy;
517 const int mb_type= s->current_picture.mb_type[mb_xy];
519 assert(IS_INTER(mb_type));
521 prefetch_motion(h, 0, pixel_shift);
523 if(IS_16X16(mb_type)){
524 mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0,
525 qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
526 weight_op, weight_avg,
527 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1),
529 }else if(IS_16X8(mb_type)){
530 mc_part(h, 0, 0, 4, 8 << pixel_shift, dest_y, dest_cb, dest_cr, 0, 0,
531 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
532 &weight_op[1], &weight_avg[1],
533 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1),
535 mc_part(h, 8, 0, 4, 8 << pixel_shift, dest_y, dest_cb, dest_cr, 0, 4,
536 qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
537 &weight_op[1], &weight_avg[1],
538 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1),
540 }else if(IS_8X16(mb_type)){
541 mc_part(h, 0, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
542 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
543 &weight_op[2], &weight_avg[2],
544 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1),
546 mc_part(h, 4, 0, 8, 8*h->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
547 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
548 &weight_op[2], &weight_avg[2],
549 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1),
554 assert(IS_8X8(mb_type));
557 const int sub_mb_type= h->sub_mb_type[i];
559 int x_offset= (i&1)<<2;
560 int y_offset= (i&2)<<1;
562 if(IS_SUB_8X8(sub_mb_type)){
563 mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset,
564 qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
565 &weight_op[3], &weight_avg[3],
566 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1),
568 }else if(IS_SUB_8X4(sub_mb_type)){
569 mc_part(h, n , 0, 2, 4 << pixel_shift, dest_y, dest_cb, dest_cr, x_offset, y_offset,
570 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
571 &weight_op[4], &weight_avg[4],
572 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1),
574 mc_part(h, n+2, 0, 2, 4 << pixel_shift, dest_y, dest_cb, dest_cr, x_offset, y_offset+2,
575 qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
576 &weight_op[4], &weight_avg[4],
577 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1),
579 }else if(IS_SUB_4X8(sub_mb_type)){
580 mc_part(h, n , 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset,
581 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
582 &weight_op[5], &weight_avg[5],
583 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1),
585 mc_part(h, n+1, 0, 4, 4*h->mb_linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset,
586 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
587 &weight_op[5], &weight_avg[5],
588 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1),
592 assert(IS_SUB_4X4(sub_mb_type));
594 int sub_x_offset= x_offset + 2*(j&1);
595 int sub_y_offset= y_offset + (j&2);
596 mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
597 qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
598 &weight_op[6], &weight_avg[6],
599 IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1),
606 prefetch_motion(h, 1, pixel_shift);
609 #define hl_motion_fn(sh, bits) \
610 static av_always_inline void hl_motion_ ## bits(H264Context *h, \
612 uint8_t *dest_cb, uint8_t *dest_cr, \
613 qpel_mc_func (*qpix_put)[16], \
614 h264_chroma_mc_func (*chroma_put), \
615 qpel_mc_func (*qpix_avg)[16], \
616 h264_chroma_mc_func (*chroma_avg), \
617 h264_weight_func *weight_op, \
618 h264_biweight_func *weight_avg) \
620 hl_motion(h, dest_y, dest_cb, dest_cr, qpix_put, chroma_put, \
621 qpix_avg, chroma_avg, weight_op, weight_avg, sh); \
626 static void free_tables(H264Context *h, int free_rbsp){
629 av_freep(&h->intra4x4_pred_mode);
630 av_freep(&h->chroma_pred_mode_table);
631 av_freep(&h->cbp_table);
632 av_freep(&h->mvd_table[0]);
633 av_freep(&h->mvd_table[1]);
634 av_freep(&h->direct_table);
635 av_freep(&h->non_zero_count);
636 av_freep(&h->slice_table_base);
637 h->slice_table= NULL;
638 av_freep(&h->list_counts);
640 av_freep(&h->mb2b_xy);
641 av_freep(&h->mb2br_xy);
643 for(i = 0; i < MAX_THREADS; i++) {
644 hx = h->thread_context[i];
646 av_freep(&hx->top_borders[1]);
647 av_freep(&hx->top_borders[0]);
648 av_freep(&hx->s.obmc_scratchpad);
650 av_freep(&hx->rbsp_buffer[1]);
651 av_freep(&hx->rbsp_buffer[0]);
652 hx->rbsp_buffer_size[0] = 0;
653 hx->rbsp_buffer_size[1] = 0;
655 if (i) av_freep(&h->thread_context[i]);
659 static void init_dequant8_coeff_table(H264Context *h){
661 const int max_qp = 51 + 6*(h->sps.bit_depth_luma-8);
662 h->dequant8_coeff[0] = h->dequant8_buffer[0];
663 h->dequant8_coeff[1] = h->dequant8_buffer[1];
666 if(i && !memcmp(h->pps.scaling_matrix8[0], h->pps.scaling_matrix8[1], 64*sizeof(uint8_t))){
667 h->dequant8_coeff[1] = h->dequant8_buffer[0];
671 for(q=0; q<max_qp+1; q++){
675 h->dequant8_coeff[i][q][(x>>3)|((x&7)<<3)] =
676 ((uint32_t)dequant8_coeff_init[idx][ dequant8_coeff_init_scan[((x>>1)&12) | (x&3)] ] *
677 h->pps.scaling_matrix8[i][x]) << shift;
682 static void init_dequant4_coeff_table(H264Context *h){
684 const int max_qp = 51 + 6*(h->sps.bit_depth_luma-8);
686 h->dequant4_coeff[i] = h->dequant4_buffer[i];
688 if(!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], 16*sizeof(uint8_t))){
689 h->dequant4_coeff[i] = h->dequant4_buffer[j];
696 for(q=0; q<max_qp+1; q++){
697 int shift = div6[q] + 2;
700 h->dequant4_coeff[i][q][(x>>2)|((x<<2)&0xF)] =
701 ((uint32_t)dequant4_coeff_init[idx][(x&1) + ((x>>2)&1)] *
702 h->pps.scaling_matrix4[i][x]) << shift;
707 static void init_dequant_tables(H264Context *h){
709 init_dequant4_coeff_table(h);
710 if(h->pps.transform_8x8_mode)
711 init_dequant8_coeff_table(h);
712 if(h->sps.transform_bypass){
715 h->dequant4_coeff[i][0][x] = 1<<6;
716 if(h->pps.transform_8x8_mode)
719 h->dequant8_coeff[i][0][x] = 1<<6;
724 int ff_h264_alloc_tables(H264Context *h){
725 MpegEncContext * const s = &h->s;
726 const int big_mb_num= s->mb_stride * (s->mb_height+1);
727 const int row_mb_num= 2*s->mb_stride*s->avctx->thread_count;
730 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->intra4x4_pred_mode, row_mb_num * 8 * sizeof(uint8_t), fail)
732 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->non_zero_count , big_mb_num * 32 * sizeof(uint8_t), fail)
733 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->slice_table_base , (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base), fail)
734 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->cbp_table, big_mb_num * sizeof(uint16_t), fail)
736 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t), fail)
737 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[0], 16*row_mb_num * sizeof(uint8_t), fail);
738 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mvd_table[1], 16*row_mb_num * sizeof(uint8_t), fail);
739 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->direct_table, 4*big_mb_num * sizeof(uint8_t) , fail);
740 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->list_counts, big_mb_num * sizeof(uint8_t), fail)
742 memset(h->slice_table_base, -1, (big_mb_num+s->mb_stride) * sizeof(*h->slice_table_base));
743 h->slice_table= h->slice_table_base + s->mb_stride*2 + 1;
745 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2b_xy , big_mb_num * sizeof(uint32_t), fail);
746 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->mb2br_xy , big_mb_num * sizeof(uint32_t), fail);
747 for(y=0; y<s->mb_height; y++){
748 for(x=0; x<s->mb_width; x++){
749 const int mb_xy= x + y*s->mb_stride;
750 const int b_xy = 4*x + 4*y*h->b_stride;
752 h->mb2b_xy [mb_xy]= b_xy;
753 h->mb2br_xy[mb_xy]= 8*(FMO ? mb_xy : (mb_xy % (2*s->mb_stride)));
757 s->obmc_scratchpad = NULL;
759 if(!h->dequant4_coeff[0])
760 init_dequant_tables(h);
769 * Mimic alloc_tables(), but for every context thread.
771 static void clone_tables(H264Context *dst, H264Context *src, int i){
772 MpegEncContext * const s = &src->s;
773 dst->intra4x4_pred_mode = src->intra4x4_pred_mode + i*8*2*s->mb_stride;
774 dst->non_zero_count = src->non_zero_count;
775 dst->slice_table = src->slice_table;
776 dst->cbp_table = src->cbp_table;
777 dst->mb2b_xy = src->mb2b_xy;
778 dst->mb2br_xy = src->mb2br_xy;
779 dst->chroma_pred_mode_table = src->chroma_pred_mode_table;
780 dst->mvd_table[0] = src->mvd_table[0] + i*8*2*s->mb_stride;
781 dst->mvd_table[1] = src->mvd_table[1] + i*8*2*s->mb_stride;
782 dst->direct_table = src->direct_table;
783 dst->list_counts = src->list_counts;
785 dst->s.obmc_scratchpad = NULL;
786 ff_h264_pred_init(&dst->hpc, src->s.codec_id, src->sps.bit_depth_luma);
791 * Allocate buffers which are not shared amongst multiple threads.
793 static int context_init(H264Context *h){
794 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[0], h->s.mb_width * (16+8+8) * sizeof(uint8_t)*2, fail)
795 FF_ALLOCZ_OR_GOTO(h->s.avctx, h->top_borders[1], h->s.mb_width * (16+8+8) * sizeof(uint8_t)*2, fail)
797 h->ref_cache[0][scan8[5 ]+1] = h->ref_cache[0][scan8[7 ]+1] = h->ref_cache[0][scan8[13]+1] =
798 h->ref_cache[1][scan8[5 ]+1] = h->ref_cache[1][scan8[7 ]+1] = h->ref_cache[1][scan8[13]+1] = PART_NOT_AVAILABLE;
802 return -1; // free_tables will clean up for us
805 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size);
807 static av_cold void common_init(H264Context *h){
808 MpegEncContext * const s = &h->s;
810 s->width = s->avctx->width;
811 s->height = s->avctx->height;
812 s->codec_id= s->avctx->codec->id;
814 ff_h264dsp_init(&h->h264dsp, 8);
815 ff_h264_pred_init(&h->hpc, s->codec_id, 8);
817 h->dequant_coeff_pps= -1;
818 s->unrestricted_mv=1;
821 dsputil_init(&s->dsp, s->avctx); // needed so that idct permutation is known early
823 memset(h->pps.scaling_matrix4, 16, 6*16*sizeof(uint8_t));
824 memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
827 int ff_h264_decode_extradata(H264Context *h)
829 AVCodecContext *avctx = h->s.avctx;
831 if(*(char *)avctx->extradata == 1){
833 unsigned char *p = avctx->extradata;
837 if(avctx->extradata_size < 7) {
838 av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
841 /* sps and pps in the avcC always have length coded with 2 bytes,
842 so put a fake nal_length_size = 2 while parsing them */
843 h->nal_length_size = 2;
844 // Decode sps from avcC
845 cnt = *(p+5) & 0x1f; // Number of sps
847 for (i = 0; i < cnt; i++) {
848 nalsize = AV_RB16(p) + 2;
849 if(decode_nal_units(h, p, nalsize) < 0) {
850 av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i);
855 // Decode pps from avcC
856 cnt = *(p++); // Number of pps
857 for (i = 0; i < cnt; i++) {
858 nalsize = AV_RB16(p) + 2;
859 if(decode_nal_units(h, p, nalsize) != nalsize) {
860 av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i);
865 // Now store right nal length size, that will be use to parse all other nals
866 h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
869 if(decode_nal_units(h, avctx->extradata, avctx->extradata_size) < 0)
875 av_cold int ff_h264_decode_init(AVCodecContext *avctx){
876 H264Context *h= avctx->priv_data;
877 MpegEncContext * const s = &h->s;
879 MPV_decode_defaults(s);
884 s->out_format = FMT_H264;
885 s->workaround_bugs= avctx->workaround_bugs;
888 // s->decode_mb= ff_h263_decode_mb;
889 s->quarter_sample = 1;
890 if(!avctx->has_b_frames)
893 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
895 ff_h264_decode_init_vlc();
898 h->sps.bit_depth_luma = avctx->bits_per_raw_sample = 8;
900 h->thread_context[0] = h;
901 h->outputed_poc = INT_MIN;
902 h->prev_poc_msb= 1<<16;
904 ff_h264_reset_sei(h);
905 if(avctx->codec_id == CODEC_ID_H264){
906 if(avctx->ticks_per_frame == 1){
907 s->avctx->time_base.den *=2;
909 avctx->ticks_per_frame = 2;
912 if(avctx->extradata_size > 0 && avctx->extradata &&
913 ff_h264_decode_extradata(h))
916 if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames < h->sps.num_reorder_frames){
917 s->avctx->has_b_frames = h->sps.num_reorder_frames;
924 int ff_h264_frame_start(H264Context *h){
925 MpegEncContext * const s = &h->s;
927 const int pixel_shift = h->pixel_shift;
929 if(MPV_frame_start(s, s->avctx) < 0)
931 ff_er_frame_start(s);
933 * MPV_frame_start uses pict_type to derive key_frame.
934 * This is incorrect for H.264; IDR markings must be used.
935 * Zero here; IDR markings per slice in frame or fields are ORed in later.
936 * See decode_nal_units().
938 s->current_picture_ptr->key_frame= 0;
939 s->current_picture_ptr->mmco_reset= 0;
941 assert(s->linesize && s->uvlinesize);
944 h->block_offset[i]= (4*((scan8[i] - scan8[0])&7) << pixel_shift) + 4*s->linesize*((scan8[i] - scan8[0])>>3);
945 h->block_offset[24+i]= (4*((scan8[i] - scan8[0])&7) << pixel_shift) + 8*s->linesize*((scan8[i] - scan8[0])>>3);
948 h->block_offset[16+i]=
949 h->block_offset[20+i]= (4*((scan8[i] - scan8[0])&7) << pixel_shift) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3);
950 h->block_offset[24+16+i]=
951 h->block_offset[24+20+i]= (4*((scan8[i] - scan8[0])&7) << pixel_shift) + 8*s->uvlinesize*((scan8[i] - scan8[0])>>3);
954 /* can't be in alloc_tables because linesize isn't known there.
955 * FIXME: redo bipred weight to not require extra buffer? */
956 for(i = 0; i < s->avctx->thread_count; i++)
957 if(h->thread_context[i] && !h->thread_context[i]->s.obmc_scratchpad)
958 h->thread_context[i]->s.obmc_scratchpad = av_malloc(16*2*s->linesize + 8*2*s->uvlinesize);
960 /* some macroblocks can be accessed before they're available in case of lost slices, mbaff or threading*/
961 memset(h->slice_table, -1, (s->mb_height*s->mb_stride-1) * sizeof(*h->slice_table));
963 // s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1;
965 // We mark the current picture as non-reference after allocating it, so
966 // that if we break out due to an error it can be released automatically
967 // in the next MPV_frame_start().
968 // SVQ3 as well as most other codecs have only last/next/current and thus
969 // get released even with set reference, besides SVQ3 and others do not
970 // mark frames as reference later "naturally".
971 if(s->codec_id != CODEC_ID_SVQ3)
972 s->current_picture_ptr->reference= 0;
974 s->current_picture_ptr->field_poc[0]=
975 s->current_picture_ptr->field_poc[1]= INT_MAX;
976 assert(s->current_picture_ptr->long_ref==0);
981 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){
982 MpegEncContext * const s = &h->s;
985 const int pixel_shift = h->pixel_shift;
988 src_cb -= uvlinesize;
989 src_cr -= uvlinesize;
991 if(!simple && FRAME_MBAFF){
994 top_border = h->top_borders[0][s->mb_x];
995 AV_COPY128(top_border, src_y + 15*linesize);
997 AV_COPY128(top_border+16, src_y+15*linesize+16);
998 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1000 AV_COPY128(top_border+32, src_cb+7*uvlinesize);
1001 AV_COPY128(top_border+48, src_cr+7*uvlinesize);
1003 AV_COPY64(top_border+16, src_cb+7*uvlinesize);
1004 AV_COPY64(top_border+24, src_cr+7*uvlinesize);
1014 top_border = h->top_borders[top_idx][s->mb_x];
1015 // There are two lines saved, the line above the the top macroblock of a pair,
1016 // and the line above the bottom macroblock
1017 AV_COPY128(top_border, src_y + 16*linesize);
1019 AV_COPY128(top_border+16, src_y+16*linesize+16);
1021 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1023 AV_COPY128(top_border+32, src_cb+8*uvlinesize);
1024 AV_COPY128(top_border+48, src_cr+8*uvlinesize);
1026 AV_COPY64(top_border+16, src_cb+8*uvlinesize);
1027 AV_COPY64(top_border+24, src_cr+8*uvlinesize);
1032 static inline void xchg_mb_border(H264Context *h, uint8_t *src_y,
1033 uint8_t *src_cb, uint8_t *src_cr,
1034 int linesize, int uvlinesize,
1035 int xchg, int simple, int pixel_shift){
1036 MpegEncContext * const s = &h->s;
1040 uint8_t *top_border_m1;
1041 uint8_t *top_border;
1043 if(!simple && FRAME_MBAFF){
1048 top_idx = MB_MBAFF ? 0 : 1;
1052 if(h->deblocking_filter == 2) {
1053 deblock_left = h->left_type[0];
1054 deblock_top = h->top_type;
1056 deblock_left = (s->mb_x > 0);
1057 deblock_top = (s->mb_y > !!MB_FIELD);
1060 src_y -= linesize + 1 + pixel_shift;
1061 src_cb -= uvlinesize + 1 + pixel_shift;
1062 src_cr -= uvlinesize + 1 + pixel_shift;
1064 top_border_m1 = h->top_borders[top_idx][s->mb_x-1];
1065 top_border = h->top_borders[top_idx][s->mb_x];
1067 #define XCHG(a,b,xchg)\
1070 AV_SWAP64(b+0,a+0);\
1071 AV_SWAP64(b+8,a+8);\
1076 if (xchg) AV_SWAP64(b,a);\
1077 else AV_COPY64(b,a);
1081 XCHG(top_border_m1 + (8 << pixel_shift), src_y - (7 << pixel_shift), 1);
1083 XCHG(top_border + (0 << pixel_shift), src_y + (1 << pixel_shift), xchg);
1084 XCHG(top_border + (8 << pixel_shift), src_y + (9 << pixel_shift), 1);
1085 if(s->mb_x+1 < s->mb_width){
1086 XCHG(h->top_borders[top_idx][s->mb_x+1], src_y + (17 << pixel_shift), 1);
1089 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1092 XCHG(top_border_m1 + (16 << pixel_shift), src_cb - (7 << pixel_shift), 1);
1093 XCHG(top_border_m1 + (24 << pixel_shift), src_cr - (7 << pixel_shift), 1);
1095 XCHG(top_border + (16 << pixel_shift), src_cb+1+pixel_shift, 1);
1096 XCHG(top_border + (24 << pixel_shift), src_cr+1+pixel_shift, 1);
1101 static av_always_inline int dctcoef_get(DCTELEM *mb, int high_bit_depth, int index) {
1102 if (high_bit_depth) {
1103 return AV_RN32A(((int32_t*)mb) + index);
1105 return AV_RN16A(mb + index);
1108 static av_always_inline void dctcoef_set(DCTELEM *mb, int high_bit_depth, int index, int value) {
1109 if (high_bit_depth) {
1110 AV_WN32A(((int32_t*)mb) + index, value);
1112 AV_WN16A(mb + index, value);
1115 static av_always_inline void hl_decode_mb_internal(H264Context *h, int simple, int pixel_shift){
1116 MpegEncContext * const s = &h->s;
1117 const int mb_x= s->mb_x;
1118 const int mb_y= s->mb_y;
1119 const int mb_xy= h->mb_xy;
1120 const int mb_type= s->current_picture.mb_type[mb_xy];
1121 uint8_t *dest_y, *dest_cb, *dest_cr;
1122 int linesize, uvlinesize /*dct_offset*/;
1124 int *block_offset = &h->block_offset[0];
1125 const int transform_bypass = !simple && (s->qscale == 0 && h->sps.transform_bypass);
1126 /* is_h264 should always be true if SVQ3 is disabled. */
1127 const int is_h264 = !CONFIG_SVQ3_DECODER || simple || s->codec_id == CODEC_ID_H264;
1128 void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
1129 void (*idct_dc_add)(uint8_t *dst, DCTELEM *block, int stride);
1131 dest_y = s->current_picture.data[0] + ((mb_x << pixel_shift) + mb_y * s->linesize ) * 16;
1132 dest_cb = s->current_picture.data[1] + ((mb_x << pixel_shift) + mb_y * s->uvlinesize) * 8;
1133 dest_cr = s->current_picture.data[2] + ((mb_x << pixel_shift) + mb_y * s->uvlinesize) * 8;
1135 s->dsp.prefetch(dest_y + (s->mb_x&3)*4*s->linesize + (64 << pixel_shift), s->linesize, 4);
1136 s->dsp.prefetch(dest_cb + (s->mb_x&7)*s->uvlinesize + (64 << pixel_shift), dest_cr - dest_cb, 2);
1138 h->list_counts[mb_xy]= h->list_count;
1140 if (!simple && MB_FIELD) {
1141 linesize = h->mb_linesize = s->linesize * 2;
1142 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
1143 block_offset = &h->block_offset[24];
1144 if(mb_y&1){ //FIXME move out of this function?
1145 dest_y -= s->linesize*15;
1146 dest_cb-= s->uvlinesize*7;
1147 dest_cr-= s->uvlinesize*7;
1151 for(list=0; list<h->list_count; list++){
1152 if(!USES_LIST(mb_type, list))
1154 if(IS_16X16(mb_type)){
1155 int8_t *ref = &h->ref_cache[list][scan8[0]];
1156 fill_rectangle(ref, 4, 4, 8, (16+*ref)^(s->mb_y&1), 1);
1158 for(i=0; i<16; i+=4){
1159 int ref = h->ref_cache[list][scan8[i]];
1161 fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2, 8, (16+ref)^(s->mb_y&1), 1);
1167 linesize = h->mb_linesize = s->linesize;
1168 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
1169 // dct_offset = s->linesize * 16;
1172 if (!simple && IS_INTRA_PCM(mb_type)) {
1174 const int bit_depth = h->sps.bit_depth_luma;
1177 init_get_bits(&gb, (uint8_t*)h->mb, 384*bit_depth);
1179 for (i = 0; i < 16; i++) {
1180 uint16_t *tmp_y = (uint16_t*)(dest_y + i*linesize);
1181 for (j = 0; j < 16; j++)
1182 tmp_y[j] = get_bits(&gb, bit_depth);
1184 for (i = 0; i < 8; i++) {
1185 uint16_t *tmp_cb = (uint16_t*)(dest_cb + i*uvlinesize);
1186 for (j = 0; j < 8; j++)
1187 tmp_cb[j] = get_bits(&gb, bit_depth);
1189 for (i = 0; i < 8; i++) {
1190 uint16_t *tmp_cr = (uint16_t*)(dest_cr + i*uvlinesize);
1191 for (j = 0; j < 8; j++)
1192 tmp_cr[j] = get_bits(&gb, bit_depth);
1195 for (i=0; i<16; i++) {
1196 memcpy(dest_y + i* linesize, h->mb + i*8, 16);
1198 for (i=0; i<8; i++) {
1199 memcpy(dest_cb+ i*uvlinesize, h->mb + 128 + i*4, 8);
1200 memcpy(dest_cr+ i*uvlinesize, h->mb + 160 + i*4, 8);
1204 if(IS_INTRA(mb_type)){
1205 if(h->deblocking_filter)
1206 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1, simple, pixel_shift);
1208 if(simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
1209 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize);
1210 h->hpc.pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize);
1213 if(IS_INTRA4x4(mb_type)){
1214 if(simple || !s->encoding){
1215 if(IS_8x8DCT(mb_type)){
1216 if(transform_bypass){
1218 idct_add = s->dsp.add_pixels8;
1220 idct_dc_add = h->h264dsp.h264_idct8_dc_add;
1221 idct_add = h->h264dsp.h264_idct8_add;
1223 for(i=0; i<16; i+=4){
1224 uint8_t * const ptr= dest_y + block_offset[i];
1225 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1226 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1227 h->hpc.pred8x8l_add[dir](ptr, h->mb + (i*16 << pixel_shift), linesize);
1229 const int nnz = h->non_zero_count_cache[ scan8[i] ];
1230 h->hpc.pred8x8l[ dir ](ptr, (h->topleft_samples_available<<i)&0x8000,
1231 (h->topright_samples_available<<i)&0x4000, linesize);
1233 if(nnz == 1 && dctcoef_get(h->mb, pixel_shift, i*16))
1234 idct_dc_add(ptr, h->mb + (i*16 << pixel_shift), linesize);
1236 idct_add (ptr, h->mb + (i*16 << pixel_shift), linesize);
1241 if(transform_bypass){
1243 idct_add = s->dsp.add_pixels4;
1245 idct_dc_add = h->h264dsp.h264_idct_dc_add;
1246 idct_add = h->h264dsp.h264_idct_add;
1248 for(i=0; i<16; i++){
1249 uint8_t * const ptr= dest_y + block_offset[i];
1250 const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ];
1252 if(transform_bypass && h->sps.profile_idc==244 && dir<=1){
1253 h->hpc.pred4x4_add[dir](ptr, h->mb + (i*16 << pixel_shift), linesize);
1258 if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){
1259 const int topright_avail= (h->topright_samples_available<<i)&0x8000;
1260 assert(mb_y || linesize <= block_offset[i]);
1261 if(!topright_avail){
1263 tr_high= ((uint16_t*)ptr)[3 - linesize/2]*0x0001000100010001ULL;
1264 topright= (uint8_t*) &tr_high;
1266 tr= ptr[3 - linesize]*0x01010101;
1267 topright= (uint8_t*) &tr;
1270 topright= ptr + (4 << pixel_shift) - linesize;
1274 h->hpc.pred4x4[ dir ](ptr, topright, linesize);
1275 nnz = h->non_zero_count_cache[ scan8[i] ];
1278 if(nnz == 1 && dctcoef_get(h->mb, pixel_shift, i*16))
1279 idct_dc_add(ptr, h->mb + (i*16 << pixel_shift), linesize);
1281 idct_add (ptr, h->mb + (i*16 << pixel_shift), linesize);
1283 ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0);
1290 h->hpc.pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize);
1292 if(h->non_zero_count_cache[ scan8[LUMA_DC_BLOCK_INDEX] ]){
1293 if(!transform_bypass)
1294 h->h264dsp.h264_luma_dc_dequant_idct(h->mb, h->mb_luma_dc, h->dequant4_coeff[0][s->qscale][0]);
1296 static const uint8_t dc_mapping[16] = { 0*16, 1*16, 4*16, 5*16, 2*16, 3*16, 6*16, 7*16,
1297 8*16, 9*16,12*16,13*16,10*16,11*16,14*16,15*16};
1298 for(i = 0; i < 16; i++)
1299 dctcoef_set(h->mb, pixel_shift, dc_mapping[i], dctcoef_get(h->mb_luma_dc, pixel_shift, i));
1303 ff_svq3_luma_dc_dequant_idct_c(h->mb, h->mb_luma_dc, s->qscale);
1305 if(h->deblocking_filter)
1306 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0, simple, pixel_shift);
1309 hl_motion_16(h, dest_y, dest_cb, dest_cr,
1310 s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1311 s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1312 h->h264dsp.weight_h264_pixels_tab,
1313 h->h264dsp.biweight_h264_pixels_tab);
1315 hl_motion_8(h, dest_y, dest_cb, dest_cr,
1316 s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
1317 s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
1318 h->h264dsp.weight_h264_pixels_tab,
1319 h->h264dsp.biweight_h264_pixels_tab);
1323 if(!IS_INTRA4x4(mb_type)){
1325 if(IS_INTRA16x16(mb_type)){
1326 if(transform_bypass){
1327 if(h->sps.profile_idc==244 && (h->intra16x16_pred_mode==VERT_PRED8x8 || h->intra16x16_pred_mode==HOR_PRED8x8)){
1328 h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, h->mb, linesize);
1330 for(i=0; i<16; i++){
1331 if(h->non_zero_count_cache[ scan8[i] ] || dctcoef_get(h->mb, pixel_shift, i*16))
1332 s->dsp.add_pixels4(dest_y + block_offset[i], h->mb + (i*16 << pixel_shift), linesize);
1336 h->h264dsp.h264_idct_add16intra(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1338 }else if(h->cbp&15){
1339 if(transform_bypass){
1340 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
1341 idct_add= IS_8x8DCT(mb_type) ? s->dsp.add_pixels8 : s->dsp.add_pixels4;
1342 for(i=0; i<16; i+=di){
1343 if(h->non_zero_count_cache[ scan8[i] ]){
1344 idct_add(dest_y + block_offset[i], h->mb + (i*16 << pixel_shift), linesize);
1348 if(IS_8x8DCT(mb_type)){
1349 h->h264dsp.h264_idct8_add4(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1351 h->h264dsp.h264_idct_add16(dest_y, block_offset, h->mb, linesize, h->non_zero_count_cache);
1356 for(i=0; i<16; i++){
1357 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below
1358 uint8_t * const ptr= dest_y + block_offset[i];
1359 ff_svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0);
1365 if((simple || !CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)) && (h->cbp&0x30)){
1366 uint8_t *dest[2] = {dest_cb, dest_cr};
1367 if(transform_bypass){
1368 if(IS_INTRA(mb_type) && h->sps.profile_idc==244 && (h->chroma_pred_mode==VERT_PRED8x8 || h->chroma_pred_mode==HOR_PRED8x8)){
1369 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0], block_offset + 16, h->mb + (16*16 << pixel_shift), uvlinesize);
1370 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1], block_offset + 20, h->mb + (20*16 << pixel_shift), uvlinesize);
1372 idct_add = s->dsp.add_pixels4;
1373 for(i=16; i<16+8; i++){
1374 if(h->non_zero_count_cache[ scan8[i] ] || dctcoef_get(h->mb, pixel_shift, i*16))
1375 idct_add (dest[(i&4)>>2] + block_offset[i], h->mb + (i*16 << pixel_shift), uvlinesize);
1380 if(h->non_zero_count_cache[ scan8[CHROMA_DC_BLOCK_INDEX+0] ])
1381 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]);
1382 if(h->non_zero_count_cache[ scan8[CHROMA_DC_BLOCK_INDEX+1] ])
1383 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]);
1384 h->h264dsp.h264_idct_add8(dest, block_offset,
1386 h->non_zero_count_cache);
1388 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]);
1389 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]);
1390 for(i=16; i<16+8; i++){
1391 if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){
1392 uint8_t * const ptr= dest[(i&4)>>2] + block_offset[i];
1393 ff_svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, ff_h264_chroma_qp[0][s->qscale + 12] - 12, 2);
1400 if(h->cbp || IS_INTRA(mb_type))
1401 s->dsp.clear_blocks(h->mb);
1405 * Process a macroblock; this case avoids checks for expensive uncommon cases.
1407 #define hl_decode_mb_simple(sh, bits) \
1408 static void hl_decode_mb_simple_ ## bits(H264Context *h){ \
1409 hl_decode_mb_internal(h, 1, sh); \
1411 hl_decode_mb_simple(0, 8);
1412 hl_decode_mb_simple(1, 16);
1415 * Process a macroblock; this handles edge cases, such as interlacing.
1417 static void av_noinline hl_decode_mb_complex(H264Context *h){
1418 hl_decode_mb_internal(h, 0, h->pixel_shift);
1421 void ff_h264_hl_decode_mb(H264Context *h){
1422 MpegEncContext * const s = &h->s;
1423 const int mb_xy= h->mb_xy;
1424 const int mb_type= s->current_picture.mb_type[mb_xy];
1425 int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || s->qscale == 0;
1428 hl_decode_mb_complex(h);
1429 } else if (h->pixel_shift) {
1430 hl_decode_mb_simple_16(h);
1432 hl_decode_mb_simple_8(h);
1435 static int pred_weight_table(H264Context *h){
1436 MpegEncContext * const s = &h->s;
1438 int luma_def, chroma_def;
1441 h->use_weight_chroma= 0;
1442 h->luma_log2_weight_denom= get_ue_golomb(&s->gb);
1444 h->chroma_log2_weight_denom= get_ue_golomb(&s->gb);
1445 luma_def = 1<<h->luma_log2_weight_denom;
1446 chroma_def = 1<<h->chroma_log2_weight_denom;
1448 for(list=0; list<2; list++){
1449 h->luma_weight_flag[list] = 0;
1450 h->chroma_weight_flag[list] = 0;
1451 for(i=0; i<h->ref_count[list]; i++){
1452 int luma_weight_flag, chroma_weight_flag;
1454 luma_weight_flag= get_bits1(&s->gb);
1455 if(luma_weight_flag){
1456 h->luma_weight[i][list][0]= get_se_golomb(&s->gb);
1457 h->luma_weight[i][list][1]= get_se_golomb(&s->gb);
1458 if( h->luma_weight[i][list][0] != luma_def
1459 || h->luma_weight[i][list][1] != 0) {
1461 h->luma_weight_flag[list]= 1;
1464 h->luma_weight[i][list][0]= luma_def;
1465 h->luma_weight[i][list][1]= 0;
1469 chroma_weight_flag= get_bits1(&s->gb);
1470 if(chroma_weight_flag){
1473 h->chroma_weight[i][list][j][0]= get_se_golomb(&s->gb);
1474 h->chroma_weight[i][list][j][1]= get_se_golomb(&s->gb);
1475 if( h->chroma_weight[i][list][j][0] != chroma_def
1476 || h->chroma_weight[i][list][j][1] != 0) {
1477 h->use_weight_chroma= 1;
1478 h->chroma_weight_flag[list]= 1;
1484 h->chroma_weight[i][list][j][0]= chroma_def;
1485 h->chroma_weight[i][list][j][1]= 0;
1490 if(h->slice_type_nos != AV_PICTURE_TYPE_B) break;
1492 h->use_weight= h->use_weight || h->use_weight_chroma;
1497 * Initialize implicit_weight table.
1498 * @param field 0/1 initialize the weight for interlaced MBAFF
1499 * -1 initializes the rest
1501 static void implicit_weight_table(H264Context *h, int field){
1502 MpegEncContext * const s = &h->s;
1503 int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
1505 for (i = 0; i < 2; i++) {
1506 h->luma_weight_flag[i] = 0;
1507 h->chroma_weight_flag[i] = 0;
1511 cur_poc = s->current_picture_ptr->poc;
1512 if( h->ref_count[0] == 1 && h->ref_count[1] == 1 && !FRAME_MBAFF
1513 && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){
1515 h->use_weight_chroma= 0;
1519 ref_count0= h->ref_count[0];
1520 ref_count1= h->ref_count[1];
1522 cur_poc = s->current_picture_ptr->field_poc[field];
1524 ref_count0= 16+2*h->ref_count[0];
1525 ref_count1= 16+2*h->ref_count[1];
1529 h->use_weight_chroma= 2;
1530 h->luma_log2_weight_denom= 5;
1531 h->chroma_log2_weight_denom= 5;
1533 for(ref0=ref_start; ref0 < ref_count0; ref0++){
1534 int poc0 = h->ref_list[0][ref0].poc;
1535 for(ref1=ref_start; ref1 < ref_count1; ref1++){
1536 int poc1 = h->ref_list[1][ref1].poc;
1537 int td = av_clip(poc1 - poc0, -128, 127);
1540 int tb = av_clip(cur_poc - poc0, -128, 127);
1541 int tx = (16384 + (FFABS(td) >> 1)) / td;
1542 int dist_scale_factor = (tb*tx + 32) >> 8;
1543 if(dist_scale_factor >= -64 && dist_scale_factor <= 128)
1544 w = 64 - dist_scale_factor;
1547 h->implicit_weight[ref0][ref1][0]=
1548 h->implicit_weight[ref0][ref1][1]= w;
1550 h->implicit_weight[ref0][ref1][field]=w;
1557 * instantaneous decoder refresh.
1559 static void idr(H264Context *h){
1560 ff_h264_remove_all_refs(h);
1561 h->prev_frame_num= 0;
1562 h->prev_frame_num_offset= 0;
1567 /* forget old pics after a seek */
1568 static void flush_dpb(AVCodecContext *avctx){
1569 H264Context *h= avctx->priv_data;
1571 for(i=0; i<MAX_DELAYED_PIC_COUNT; i++) {
1572 if(h->delayed_pic[i])
1573 h->delayed_pic[i]->reference= 0;
1574 h->delayed_pic[i]= NULL;
1576 h->outputed_poc= INT_MIN;
1577 h->prev_interlaced_frame = 1;
1579 if(h->s.current_picture_ptr)
1580 h->s.current_picture_ptr->reference= 0;
1581 h->s.first_field= 0;
1582 ff_h264_reset_sei(h);
1583 ff_mpeg_flush(avctx);
1586 static int init_poc(H264Context *h){
1587 MpegEncContext * const s = &h->s;
1588 const int max_frame_num= 1<<h->sps.log2_max_frame_num;
1590 Picture *cur = s->current_picture_ptr;
1592 h->frame_num_offset= h->prev_frame_num_offset;
1593 if(h->frame_num < h->prev_frame_num)
1594 h->frame_num_offset += max_frame_num;
1596 if(h->sps.poc_type==0){
1597 const int max_poc_lsb= 1<<h->sps.log2_max_poc_lsb;
1599 if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2)
1600 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
1601 else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2)
1602 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
1604 h->poc_msb = h->prev_poc_msb;
1605 //printf("poc: %d %d\n", h->poc_msb, h->poc_lsb);
1607 field_poc[1] = h->poc_msb + h->poc_lsb;
1608 if(s->picture_structure == PICT_FRAME)
1609 field_poc[1] += h->delta_poc_bottom;
1610 }else if(h->sps.poc_type==1){
1611 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
1614 if(h->sps.poc_cycle_length != 0)
1615 abs_frame_num = h->frame_num_offset + h->frame_num;
1619 if(h->nal_ref_idc==0 && abs_frame_num > 0)
1622 expected_delta_per_poc_cycle = 0;
1623 for(i=0; i < h->sps.poc_cycle_length; i++)
1624 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse
1626 if(abs_frame_num > 0){
1627 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
1628 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
1630 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
1631 for(i = 0; i <= frame_num_in_poc_cycle; i++)
1632 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ];
1636 if(h->nal_ref_idc == 0)
1637 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
1639 field_poc[0] = expectedpoc + h->delta_poc[0];
1640 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
1642 if(s->picture_structure == PICT_FRAME)
1643 field_poc[1] += h->delta_poc[1];
1645 int poc= 2*(h->frame_num_offset + h->frame_num);
1654 if(s->picture_structure != PICT_BOTTOM_FIELD)
1655 s->current_picture_ptr->field_poc[0]= field_poc[0];
1656 if(s->picture_structure != PICT_TOP_FIELD)
1657 s->current_picture_ptr->field_poc[1]= field_poc[1];
1658 cur->poc= FFMIN(cur->field_poc[0], cur->field_poc[1]);
1665 * initialize scan tables
1667 static void init_scan_tables(H264Context *h){
1669 for(i=0; i<16; i++){
1670 #define T(x) (x>>2) | ((x<<2) & 0xF)
1671 h->zigzag_scan[i] = T(zigzag_scan[i]);
1672 h-> field_scan[i] = T( field_scan[i]);
1675 for(i=0; i<64; i++){
1676 #define T(x) (x>>3) | ((x&7)<<3)
1677 h->zigzag_scan8x8[i] = T(ff_zigzag_direct[i]);
1678 h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
1679 h->field_scan8x8[i] = T(field_scan8x8[i]);
1680 h->field_scan8x8_cavlc[i] = T(field_scan8x8_cavlc[i]);
1683 if(h->sps.transform_bypass){ //FIXME same ugly
1684 h->zigzag_scan_q0 = zigzag_scan;
1685 h->zigzag_scan8x8_q0 = ff_zigzag_direct;
1686 h->zigzag_scan8x8_cavlc_q0 = zigzag_scan8x8_cavlc;
1687 h->field_scan_q0 = field_scan;
1688 h->field_scan8x8_q0 = field_scan8x8;
1689 h->field_scan8x8_cavlc_q0 = field_scan8x8_cavlc;
1691 h->zigzag_scan_q0 = h->zigzag_scan;
1692 h->zigzag_scan8x8_q0 = h->zigzag_scan8x8;
1693 h->zigzag_scan8x8_cavlc_q0 = h->zigzag_scan8x8_cavlc;
1694 h->field_scan_q0 = h->field_scan;
1695 h->field_scan8x8_q0 = h->field_scan8x8;
1696 h->field_scan8x8_cavlc_q0 = h->field_scan8x8_cavlc;
1700 static void field_end(H264Context *h){
1701 MpegEncContext * const s = &h->s;
1702 AVCodecContext * const avctx= s->avctx;
1705 s->current_picture_ptr->qscale_type= FF_QSCALE_TYPE_H264;
1706 s->current_picture_ptr->pict_type= s->pict_type;
1708 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1709 ff_vdpau_h264_set_reference_frames(s);
1712 ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1713 h->prev_poc_msb= h->poc_msb;
1714 h->prev_poc_lsb= h->poc_lsb;
1716 h->prev_frame_num_offset= h->frame_num_offset;
1717 h->prev_frame_num= h->frame_num;
1719 if (avctx->hwaccel) {
1720 if (avctx->hwaccel->end_frame(avctx) < 0)
1721 av_log(avctx, AV_LOG_ERROR, "hardware accelerator failed to decode picture\n");
1724 if (CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
1725 ff_vdpau_h264_picture_complete(s);
1728 * FIXME: Error handling code does not seem to support interlaced
1729 * when slices span multiple rows
1730 * The ff_er_add_slice calls don't work right for bottom
1731 * fields; they cause massive erroneous error concealing
1732 * Error marking covers both fields (top and bottom).
1733 * This causes a mismatched s->error_count
1734 * and a bad error table. Further, the error count goes to
1735 * INT_MAX when called for bottom field, because mb_y is
1736 * past end by one (callers fault) and resync_mb_y != 0
1737 * causes problems for the first MB line, too.
1748 * Replicate H264 "master" context to thread contexts.
1750 static void clone_slice(H264Context *dst, H264Context *src)
1752 memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset));
1753 dst->s.current_picture_ptr = src->s.current_picture_ptr;
1754 dst->s.current_picture = src->s.current_picture;
1755 dst->s.linesize = src->s.linesize;
1756 dst->s.uvlinesize = src->s.uvlinesize;
1757 dst->s.first_field = src->s.first_field;
1759 dst->prev_poc_msb = src->prev_poc_msb;
1760 dst->prev_poc_lsb = src->prev_poc_lsb;
1761 dst->prev_frame_num_offset = src->prev_frame_num_offset;
1762 dst->prev_frame_num = src->prev_frame_num;
1763 dst->short_ref_count = src->short_ref_count;
1765 memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref));
1766 memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref));
1767 memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
1768 memcpy(dst->ref_list, src->ref_list, sizeof(dst->ref_list));
1770 memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff));
1771 memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff));
1775 * computes profile from profile_idc and constraint_set?_flags
1779 * @return profile as defined by FF_PROFILE_H264_*
1781 int ff_h264_get_profile(SPS *sps)
1783 int profile = sps->profile_idc;
1785 switch(sps->profile_idc) {
1786 case FF_PROFILE_H264_BASELINE:
1787 // constraint_set1_flag set to 1
1788 profile |= (sps->constraint_set_flags & 1<<1) ? FF_PROFILE_H264_CONSTRAINED : 0;
1790 case FF_PROFILE_H264_HIGH_10:
1791 case FF_PROFILE_H264_HIGH_422:
1792 case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
1793 // constraint_set3_flag set to 1
1794 profile |= (sps->constraint_set_flags & 1<<3) ? FF_PROFILE_H264_INTRA : 0;
1802 * decodes a slice header.
1803 * This will also call MPV_common_init() and frame_start() as needed.
1805 * @param h h264context
1806 * @param h0 h264 master context (differs from 'h' when doing sliced based parallel decoding)
1808 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
1810 static int decode_slice_header(H264Context *h, H264Context *h0){
1811 MpegEncContext * const s = &h->s;
1812 MpegEncContext * const s0 = &h0->s;
1813 unsigned int first_mb_in_slice;
1814 unsigned int pps_id;
1815 int num_ref_idx_active_override_flag;
1816 unsigned int slice_type, tmp, i, j;
1817 int default_ref_list_done = 0;
1818 int last_pic_structure;
1820 s->dropable= h->nal_ref_idc == 0;
1822 if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc){
1823 s->me.qpel_put= s->dsp.put_2tap_qpel_pixels_tab;
1824 s->me.qpel_avg= s->dsp.avg_2tap_qpel_pixels_tab;
1826 s->me.qpel_put= s->dsp.put_h264_qpel_pixels_tab;
1827 s->me.qpel_avg= s->dsp.avg_h264_qpel_pixels_tab;
1830 first_mb_in_slice= get_ue_golomb(&s->gb);
1832 if(first_mb_in_slice == 0){ //FIXME better field boundary detection
1833 if(h0->current_slice && FIELD_PICTURE){
1837 h0->current_slice = 0;
1838 if (!s0->first_field)
1839 s->current_picture_ptr= NULL;
1842 slice_type= get_ue_golomb_31(&s->gb);
1844 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);
1849 h->slice_type_fixed=1;
1851 h->slice_type_fixed=0;
1853 slice_type= golomb_to_pict_type[ slice_type ];
1854 if (slice_type == AV_PICTURE_TYPE_I
1855 || (h0->current_slice != 0 && slice_type == h0->last_slice_type) ) {
1856 default_ref_list_done = 1;
1858 h->slice_type= slice_type;
1859 h->slice_type_nos= slice_type & 3;
1861 s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
1863 pps_id= get_ue_golomb(&s->gb);
1864 if(pps_id>=MAX_PPS_COUNT){
1865 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n");
1868 if(!h0->pps_buffers[pps_id]) {
1869 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing PPS %u referenced\n", pps_id);
1872 h->pps= *h0->pps_buffers[pps_id];
1874 if(!h0->sps_buffers[h->pps.sps_id]) {
1875 av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
1878 h->sps = *h0->sps_buffers[h->pps.sps_id];
1880 s->avctx->profile = ff_h264_get_profile(&h->sps);
1881 s->avctx->level = h->sps.level_idc;
1882 s->avctx->refs = h->sps.ref_frame_count;
1884 if(h == h0 && h->dequant_coeff_pps != pps_id){
1885 h->dequant_coeff_pps = pps_id;
1886 init_dequant_tables(h);
1889 s->mb_width= h->sps.mb_width;
1890 s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
1892 h->b_stride= s->mb_width*4;
1894 s->width = 16*s->mb_width - 2*FFMIN(h->sps.crop_right, 7);
1895 if(h->sps.frame_mbs_only_flag)
1896 s->height= 16*s->mb_height - 2*FFMIN(h->sps.crop_bottom, 7);
1898 s->height= 16*s->mb_height - 4*FFMIN(h->sps.crop_bottom, 7);
1900 if (s->context_initialized
1901 && ( s->width != s->avctx->width || s->height != s->avctx->height
1902 || av_cmp_q(h->sps.sar, s->avctx->sample_aspect_ratio))) {
1904 return -1; // width / height changed during parallelized decoding
1906 flush_dpb(s->avctx);
1909 if (!s->context_initialized) {
1911 return -1; // we cant (re-)initialize context during parallel decoding
1913 avcodec_set_dimensions(s->avctx, s->width, s->height);
1914 s->avctx->sample_aspect_ratio= h->sps.sar;
1915 av_assert0(s->avctx->sample_aspect_ratio.den);
1917 if(h->sps.video_signal_type_present_flag){
1918 s->avctx->color_range = h->sps.full_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
1919 if(h->sps.colour_description_present_flag){
1920 s->avctx->color_primaries = h->sps.color_primaries;
1921 s->avctx->color_trc = h->sps.color_trc;
1922 s->avctx->colorspace = h->sps.colorspace;
1926 if(h->sps.timing_info_present_flag){
1927 int64_t den= h->sps.time_scale;
1928 if(h->x264_build < 44U)
1930 av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
1931 h->sps.num_units_in_tick, den, 1<<30);
1934 switch (h->sps.bit_depth_luma) {
1936 s->avctx->pix_fmt = PIX_FMT_YUV420P9;
1939 s->avctx->pix_fmt = PIX_FMT_YUV420P10;
1942 s->avctx->pix_fmt = s->avctx->get_format(s->avctx,
1943 s->avctx->codec->pix_fmts ?
1944 s->avctx->codec->pix_fmts :
1945 s->avctx->color_range == AVCOL_RANGE_JPEG ?
1946 hwaccel_pixfmt_list_h264_jpeg_420 :
1947 ff_hwaccel_pixfmt_list_420);
1950 s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
1952 if (MPV_common_init(s) < 0)
1955 h->prev_interlaced_frame = 1;
1957 init_scan_tables(h);
1958 ff_h264_alloc_tables(h);
1960 for(i = 1; i < s->avctx->thread_count; i++) {
1962 c = h->thread_context[i] = av_malloc(sizeof(H264Context));
1963 memcpy(c, h->s.thread_context[i], sizeof(MpegEncContext));
1964 memset(&c->s + 1, 0, sizeof(H264Context) - sizeof(MpegEncContext));
1965 c->h264dsp = h->h264dsp;
1968 c->pixel_shift = h->pixel_shift;
1969 init_scan_tables(c);
1970 clone_tables(c, h, i);
1973 for(i = 0; i < s->avctx->thread_count; i++)
1974 if(context_init(h->thread_context[i]) < 0)
1978 h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
1981 h->mb_aff_frame = 0;
1982 last_pic_structure = s0->picture_structure;
1983 if(h->sps.frame_mbs_only_flag){
1984 s->picture_structure= PICT_FRAME;
1986 if(get_bits1(&s->gb)) { //field_pic_flag
1987 s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag
1989 s->picture_structure= PICT_FRAME;
1990 h->mb_aff_frame = h->sps.mb_aff;
1993 h->mb_field_decoding_flag= s->picture_structure != PICT_FRAME;
1995 if(h0->current_slice == 0){
1996 while(h->frame_num != h->prev_frame_num &&
1997 h->frame_num != (h->prev_frame_num+1)%(1<<h->sps.log2_max_frame_num)){
1998 Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
1999 av_log(h->s.avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
2000 if (ff_h264_frame_start(h) < 0)
2002 h->prev_frame_num++;
2003 h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
2004 s->current_picture_ptr->frame_num= h->prev_frame_num;
2005 ff_generate_sliding_window_mmcos(h);
2006 ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
2007 /* Error concealment: if a ref is missing, copy the previous ref in its place.
2008 * FIXME: avoiding a memcpy would be nice, but ref handling makes many assumptions
2009 * about there being no actual duplicates.
2010 * FIXME: this doesn't copy padding for out-of-frame motion vectors. Given we're
2011 * concealing a lost frame, this probably isn't noticable by comparison, but it should
2013 if (h->short_ref_count) {
2015 av_image_copy(h->short_ref[0]->data, h->short_ref[0]->linesize,
2016 (const uint8_t**)prev->data, prev->linesize,
2017 s->avctx->pix_fmt, s->mb_width*16, s->mb_height*16);
2018 h->short_ref[0]->poc = prev->poc+2;
2020 h->short_ref[0]->frame_num = h->prev_frame_num;
2024 /* See if we have a decoded first field looking for a pair... */
2025 if (s0->first_field) {
2026 assert(s0->current_picture_ptr);
2027 assert(s0->current_picture_ptr->data[0]);
2028 assert(s0->current_picture_ptr->reference != DELAYED_PIC_REF);
2030 /* figure out if we have a complementary field pair */
2031 if (!FIELD_PICTURE || s->picture_structure == last_pic_structure) {
2033 * Previous field is unmatched. Don't display it, but let it
2034 * remain for reference if marked as such.
2036 s0->current_picture_ptr = NULL;
2037 s0->first_field = FIELD_PICTURE;
2040 if (h->nal_ref_idc &&
2041 s0->current_picture_ptr->reference &&
2042 s0->current_picture_ptr->frame_num != h->frame_num) {
2044 * This and previous field were reference, but had
2045 * different frame_nums. Consider this field first in
2046 * pair. Throw away previous field except for reference
2049 s0->first_field = 1;
2050 s0->current_picture_ptr = NULL;
2053 /* Second field in complementary pair */
2054 s0->first_field = 0;
2059 /* Frame or first field in a potentially complementary pair */
2060 assert(!s0->current_picture_ptr);
2061 s0->first_field = FIELD_PICTURE;
2064 if((!FIELD_PICTURE || s0->first_field) && ff_h264_frame_start(h) < 0) {
2065 s0->first_field = 0;
2072 s->current_picture_ptr->frame_num= h->frame_num; //FIXME frame_num cleanup
2074 assert(s->mb_num == s->mb_width * s->mb_height);
2075 if(first_mb_in_slice << FIELD_OR_MBAFF_PICTURE >= s->mb_num ||
2076 first_mb_in_slice >= s->mb_num){
2077 av_log(h->s.avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
2080 s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
2081 s->resync_mb_y = s->mb_y = (first_mb_in_slice / s->mb_width) << FIELD_OR_MBAFF_PICTURE;
2082 if (s->picture_structure == PICT_BOTTOM_FIELD)
2083 s->resync_mb_y = s->mb_y = s->mb_y + 1;
2084 assert(s->mb_y < s->mb_height);
2086 if(s->picture_structure==PICT_FRAME){
2087 h->curr_pic_num= h->frame_num;
2088 h->max_pic_num= 1<< h->sps.log2_max_frame_num;
2090 h->curr_pic_num= 2*h->frame_num + 1;
2091 h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1);
2094 if(h->nal_unit_type == NAL_IDR_SLICE){
2095 get_ue_golomb(&s->gb); /* idr_pic_id */
2098 if(h->sps.poc_type==0){
2099 h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb);
2101 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){
2102 h->delta_poc_bottom= get_se_golomb(&s->gb);
2106 if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){
2107 h->delta_poc[0]= get_se_golomb(&s->gb);
2109 if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME)
2110 h->delta_poc[1]= get_se_golomb(&s->gb);
2115 if(h->pps.redundant_pic_cnt_present){
2116 h->redundant_pic_count= get_ue_golomb(&s->gb);
2119 //set defaults, might be overridden a few lines later
2120 h->ref_count[0]= h->pps.ref_count[0];
2121 h->ref_count[1]= h->pps.ref_count[1];
2123 if(h->slice_type_nos != AV_PICTURE_TYPE_I){
2124 if(h->slice_type_nos == AV_PICTURE_TYPE_B){
2125 h->direct_spatial_mv_pred= get_bits1(&s->gb);
2127 num_ref_idx_active_override_flag= get_bits1(&s->gb);
2129 if(num_ref_idx_active_override_flag){
2130 h->ref_count[0]= get_ue_golomb(&s->gb) + 1;
2131 if(h->slice_type_nos==AV_PICTURE_TYPE_B)
2132 h->ref_count[1]= get_ue_golomb(&s->gb) + 1;
2134 if(h->ref_count[0]-1 > 32-1 || h->ref_count[1]-1 > 32-1){
2135 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n");
2136 h->ref_count[0]= h->ref_count[1]= 1;
2140 if(h->slice_type_nos == AV_PICTURE_TYPE_B)
2147 if(!default_ref_list_done){
2148 ff_h264_fill_default_ref_list(h);
2151 if(h->slice_type_nos!=AV_PICTURE_TYPE_I && ff_h264_decode_ref_pic_list_reordering(h) < 0)
2154 if(h->slice_type_nos!=AV_PICTURE_TYPE_I){
2155 s->last_picture_ptr= &h->ref_list[0][0];
2156 ff_copy_picture(&s->last_picture, s->last_picture_ptr);
2158 if(h->slice_type_nos==AV_PICTURE_TYPE_B){
2159 s->next_picture_ptr= &h->ref_list[1][0];
2160 ff_copy_picture(&s->next_picture, s->next_picture_ptr);
2163 if( (h->pps.weighted_pred && h->slice_type_nos == AV_PICTURE_TYPE_P )
2164 || (h->pps.weighted_bipred_idc==1 && h->slice_type_nos== AV_PICTURE_TYPE_B ) )
2165 pred_weight_table(h);
2166 else if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== AV_PICTURE_TYPE_B){
2167 implicit_weight_table(h, -1);
2170 for (i = 0; i < 2; i++) {
2171 h->luma_weight_flag[i] = 0;
2172 h->chroma_weight_flag[i] = 0;
2177 ff_h264_decode_ref_pic_marking(h0, &s->gb);
2180 ff_h264_fill_mbaff_ref_list(h);
2182 if(h->pps.weighted_bipred_idc==2 && h->slice_type_nos== AV_PICTURE_TYPE_B){
2183 implicit_weight_table(h, 0);
2184 implicit_weight_table(h, 1);
2188 if(h->slice_type_nos==AV_PICTURE_TYPE_B && !h->direct_spatial_mv_pred)
2189 ff_h264_direct_dist_scale_factor(h);
2190 ff_h264_direct_ref_list_init(h);
2192 if( h->slice_type_nos != AV_PICTURE_TYPE_I && h->pps.cabac ){
2193 tmp = get_ue_golomb_31(&s->gb);
2195 av_log(s->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
2198 h->cabac_init_idc= tmp;
2201 h->last_qscale_diff = 0;
2202 tmp = h->pps.init_qp + get_se_golomb(&s->gb);
2203 if(tmp>51+6*(h->sps.bit_depth_luma-8)){
2204 av_log(s->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
2208 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2209 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2210 //FIXME qscale / qp ... stuff
2211 if(h->slice_type == AV_PICTURE_TYPE_SP){
2212 get_bits1(&s->gb); /* sp_for_switch_flag */
2214 if(h->slice_type==AV_PICTURE_TYPE_SP || h->slice_type == AV_PICTURE_TYPE_SI){
2215 get_se_golomb(&s->gb); /* slice_qs_delta */
2218 h->deblocking_filter = 1;
2219 h->slice_alpha_c0_offset = 52;
2220 h->slice_beta_offset = 52;
2221 if( h->pps.deblocking_filter_parameters_present ) {
2222 tmp= get_ue_golomb_31(&s->gb);
2224 av_log(s->avctx, AV_LOG_ERROR, "deblocking_filter_idc %u out of range\n", tmp);
2227 h->deblocking_filter= tmp;
2228 if(h->deblocking_filter < 2)
2229 h->deblocking_filter^= 1; // 1<->0
2231 if( h->deblocking_filter ) {
2232 h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
2233 h->slice_beta_offset += get_se_golomb(&s->gb) << 1;
2234 if( h->slice_alpha_c0_offset > 104U
2235 || h->slice_beta_offset > 104U){
2236 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);
2242 if( s->avctx->skip_loop_filter >= AVDISCARD_ALL
2243 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY && h->slice_type_nos != AV_PICTURE_TYPE_I)
2244 ||(s->avctx->skip_loop_filter >= AVDISCARD_BIDIR && h->slice_type_nos == AV_PICTURE_TYPE_B)
2245 ||(s->avctx->skip_loop_filter >= AVDISCARD_NONREF && h->nal_ref_idc == 0))
2246 h->deblocking_filter= 0;
2248 if(h->deblocking_filter == 1 && h0->max_contexts > 1) {
2249 if(s->avctx->flags2 & CODEC_FLAG2_FAST) {
2250 /* Cheat slightly for speed:
2251 Do not bother to deblock across slices. */
2252 h->deblocking_filter = 2;
2254 h0->max_contexts = 1;
2255 if(!h0->single_decode_warning) {
2256 av_log(s->avctx, AV_LOG_INFO, "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
2257 h0->single_decode_warning = 1;
2260 return 1; // deblocking switched inside frame
2263 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]);
2266 if( h->pps.num_slice_groups > 1 && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
2267 slice_group_change_cycle= get_bits(&s->gb, ?);
2270 h0->last_slice_type = slice_type;
2271 h->slice_num = ++h0->current_slice;
2272 if(h->slice_num >= MAX_SLICES){
2273 av_log(s->avctx, AV_LOG_ERROR, "Too many slices, increase MAX_SLICES and recompile\n");
2278 int *ref2frm= h->ref2frm[h->slice_num&(MAX_SLICES-1)][j];
2279 for(i=0; i<16; i++){
2281 if(h->ref_list[j][i].data[0]){
2283 uint8_t *base= h->ref_list[j][i].base[0];
2284 for(k=0; k<h->short_ref_count; k++)
2285 if(h->short_ref[k]->base[0] == base){
2289 for(k=0; k<h->long_ref_count; k++)
2290 if(h->long_ref[k] && h->long_ref[k]->base[0] == base){
2291 id_list[i]= h->short_ref_count + k;
2300 ref2frm[i+2]= 4*id_list[i]
2301 +(h->ref_list[j][i].reference&3);
2304 for(i=16; i<48; i++)
2305 ref2frm[i+4]= 4*id_list[(i-16)>>1]
2306 +(h->ref_list[j][i].reference&3);
2309 h->emu_edge_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16;
2310 h->emu_edge_height= (FRAME_MBAFF || FIELD_PICTURE) ? 0 : h->emu_edge_width;
2312 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
2313 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",
2315 (s->picture_structure==PICT_FRAME ? "F" : s->picture_structure==PICT_TOP_FIELD ? "T" : "B"),
2317 av_get_picture_type_char(h->slice_type), h->slice_type_fixed ? " fix" : "", h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
2318 pps_id, h->frame_num,
2319 s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
2320 h->ref_count[0], h->ref_count[1],
2322 h->deblocking_filter, h->slice_alpha_c0_offset/2-26, h->slice_beta_offset/2-26,
2324 h->use_weight==1 && h->use_weight_chroma ? "c" : "",
2325 h->slice_type == AV_PICTURE_TYPE_B ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
2332 int ff_h264_get_slice_type(const H264Context *h)
2334 switch (h->slice_type) {
2335 case AV_PICTURE_TYPE_P: return 0;
2336 case AV_PICTURE_TYPE_B: return 1;
2337 case AV_PICTURE_TYPE_I: return 2;
2338 case AV_PICTURE_TYPE_SP: return 3;
2339 case AV_PICTURE_TYPE_SI: return 4;
2346 * @return non zero if the loop filter can be skiped
2348 static int fill_filter_caches(H264Context *h, int mb_type){
2349 MpegEncContext * const s = &h->s;
2350 const int mb_xy= h->mb_xy;
2351 int top_xy, left_xy[2];
2352 int top_type, left_type[2];
2354 top_xy = mb_xy - (s->mb_stride << MB_FIELD);
2356 //FIXME deblocking could skip the intra and nnz parts.
2358 /* Wow, what a mess, why didn't they simplify the interlacing & intra
2359 * stuff, I can't imagine that these complex rules are worth it. */
2361 left_xy[1] = left_xy[0] = mb_xy-1;
2363 const int left_mb_field_flag = IS_INTERLACED(s->current_picture.mb_type[mb_xy-1]);
2364 const int curr_mb_field_flag = IS_INTERLACED(mb_type);
2366 if (left_mb_field_flag != curr_mb_field_flag) {
2367 left_xy[0] -= s->mb_stride;
2370 if(curr_mb_field_flag){
2371 top_xy += s->mb_stride & (((s->current_picture.mb_type[top_xy ]>>7)&1)-1);
2373 if (left_mb_field_flag != curr_mb_field_flag) {
2374 left_xy[1] += s->mb_stride;
2379 h->top_mb_xy = top_xy;
2380 h->left_mb_xy[0] = left_xy[0];
2381 h->left_mb_xy[1] = left_xy[1];
2383 //for sufficiently low qp, filtering wouldn't do anything
2384 //this is a conservative estimate: could also check beta_offset and more accurate chroma_qp
2385 int qp_thresh = h->qp_thresh; //FIXME strictly we should store qp_thresh for each mb of a slice
2386 int qp = s->current_picture.qscale_table[mb_xy];
2388 && (left_xy[0]<0 || ((qp + s->current_picture.qscale_table[left_xy[0]] + 1)>>1) <= qp_thresh)
2389 && (top_xy < 0 || ((qp + s->current_picture.qscale_table[top_xy ] + 1)>>1) <= qp_thresh)){
2392 if( (left_xy[0]< 0 || ((qp + s->current_picture.qscale_table[left_xy[1] ] + 1)>>1) <= qp_thresh)
2393 && (top_xy < s->mb_stride || ((qp + s->current_picture.qscale_table[top_xy -s->mb_stride] + 1)>>1) <= qp_thresh))
2398 top_type = s->current_picture.mb_type[top_xy] ;
2399 left_type[0] = s->current_picture.mb_type[left_xy[0]];
2400 left_type[1] = s->current_picture.mb_type[left_xy[1]];
2401 if(h->deblocking_filter == 2){
2402 if(h->slice_table[top_xy ] != h->slice_num) top_type= 0;
2403 if(h->slice_table[left_xy[0] ] != h->slice_num) left_type[0]= left_type[1]= 0;
2405 if(h->slice_table[top_xy ] == 0xFFFF) top_type= 0;
2406 if(h->slice_table[left_xy[0] ] == 0xFFFF) left_type[0]= left_type[1] =0;
2408 h->top_type = top_type ;
2409 h->left_type[0]= left_type[0];
2410 h->left_type[1]= left_type[1];
2412 if(IS_INTRA(mb_type))
2415 AV_COPY64(&h->non_zero_count_cache[0+8*1], &h->non_zero_count[mb_xy][ 0]);
2416 AV_COPY64(&h->non_zero_count_cache[0+8*2], &h->non_zero_count[mb_xy][ 8]);
2417 AV_COPY32(&h->non_zero_count_cache[0+8*5], &h->non_zero_count[mb_xy][16]);
2418 AV_COPY32(&h->non_zero_count_cache[4+8*3], &h->non_zero_count[mb_xy][20]);
2419 AV_COPY64(&h->non_zero_count_cache[0+8*4], &h->non_zero_count[mb_xy][24]);
2421 h->cbp= h->cbp_table[mb_xy];
2425 for(list=0; list<h->list_count; list++){
2428 int16_t (*mv_dst)[2];
2429 int16_t (*mv_src)[2];
2431 if(!USES_LIST(mb_type, list)){
2432 fill_rectangle( h->mv_cache[list][scan8[0]], 4, 4, 8, pack16to32(0,0), 4);
2433 AV_WN32A(&h->ref_cache[list][scan8[ 0]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2434 AV_WN32A(&h->ref_cache[list][scan8[ 2]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2435 AV_WN32A(&h->ref_cache[list][scan8[ 8]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2436 AV_WN32A(&h->ref_cache[list][scan8[10]], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2440 ref = &s->current_picture.ref_index[list][4*mb_xy];
2442 int (*ref2frm)[64] = h->ref2frm[ h->slice_num&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2443 AV_WN32A(&h->ref_cache[list][scan8[ 0]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2444 AV_WN32A(&h->ref_cache[list][scan8[ 2]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2446 AV_WN32A(&h->ref_cache[list][scan8[ 8]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2447 AV_WN32A(&h->ref_cache[list][scan8[10]], (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101);
2450 b_stride = h->b_stride;
2451 mv_dst = &h->mv_cache[list][scan8[0]];
2452 mv_src = &s->current_picture.motion_val[list][4*s->mb_x + 4*s->mb_y*b_stride];
2454 AV_COPY128(mv_dst + 8*y, mv_src + y*b_stride);
2469 //FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
2471 AV_COPY32(&h->non_zero_count_cache[4+8*0], &h->non_zero_count[top_xy][4+3*8]);
2475 h->non_zero_count_cache[3+8*1]= h->non_zero_count[left_xy[0]][7+0*8];
2476 h->non_zero_count_cache[3+8*2]= h->non_zero_count[left_xy[0]][7+1*8];
2477 h->non_zero_count_cache[3+8*3]= h->non_zero_count[left_xy[0]][7+2*8];
2478 h->non_zero_count_cache[3+8*4]= h->non_zero_count[left_xy[0]][7+3*8];
2481 // CAVLC 8x8dct requires NNZ values for residual decoding that differ from what the loop filter needs
2482 if(!CABAC && h->pps.transform_8x8_mode){
2483 if(IS_8x8DCT(top_type)){
2484 h->non_zero_count_cache[4+8*0]=
2485 h->non_zero_count_cache[5+8*0]= h->cbp_table[top_xy] & 4;
2486 h->non_zero_count_cache[6+8*0]=
2487 h->non_zero_count_cache[7+8*0]= h->cbp_table[top_xy] & 8;
2489 if(IS_8x8DCT(left_type[0])){
2490 h->non_zero_count_cache[3+8*1]=
2491 h->non_zero_count_cache[3+8*2]= h->cbp_table[left_xy[0]]&2; //FIXME check MBAFF
2493 if(IS_8x8DCT(left_type[1])){
2494 h->non_zero_count_cache[3+8*3]=
2495 h->non_zero_count_cache[3+8*4]= h->cbp_table[left_xy[1]]&8; //FIXME check MBAFF
2498 if(IS_8x8DCT(mb_type)){
2499 h->non_zero_count_cache[scan8[0 ]]= h->non_zero_count_cache[scan8[1 ]]=
2500 h->non_zero_count_cache[scan8[2 ]]= h->non_zero_count_cache[scan8[3 ]]= h->cbp & 1;
2502 h->non_zero_count_cache[scan8[0+ 4]]= h->non_zero_count_cache[scan8[1+ 4]]=
2503 h->non_zero_count_cache[scan8[2+ 4]]= h->non_zero_count_cache[scan8[3+ 4]]= h->cbp & 2;
2505 h->non_zero_count_cache[scan8[0+ 8]]= h->non_zero_count_cache[scan8[1+ 8]]=
2506 h->non_zero_count_cache[scan8[2+ 8]]= h->non_zero_count_cache[scan8[3+ 8]]= h->cbp & 4;
2508 h->non_zero_count_cache[scan8[0+12]]= h->non_zero_count_cache[scan8[1+12]]=
2509 h->non_zero_count_cache[scan8[2+12]]= h->non_zero_count_cache[scan8[3+12]]= h->cbp & 8;
2513 if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
2515 for(list=0; list<h->list_count; list++){
2516 if(USES_LIST(top_type, list)){
2517 const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
2518 const int b8_xy= 4*top_xy + 2;
2519 int (*ref2frm)[64] = h->ref2frm[ h->slice_table[top_xy]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2520 AV_COPY128(h->mv_cache[list][scan8[0] + 0 - 1*8], s->current_picture.motion_val[list][b_xy + 0]);
2521 h->ref_cache[list][scan8[0] + 0 - 1*8]=
2522 h->ref_cache[list][scan8[0] + 1 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 0]];
2523 h->ref_cache[list][scan8[0] + 2 - 1*8]=
2524 h->ref_cache[list][scan8[0] + 3 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 1]];
2526 AV_ZERO128(h->mv_cache[list][scan8[0] + 0 - 1*8]);
2527 AV_WN32A(&h->ref_cache[list][scan8[0] + 0 - 1*8], ((LIST_NOT_USED)&0xFF)*0x01010101u);
2530 if(!IS_INTERLACED(mb_type^left_type[0])){
2531 if(USES_LIST(left_type[0], list)){
2532 const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
2533 const int b8_xy= 4*left_xy[0] + 1;
2534 int (*ref2frm)[64] = h->ref2frm[ h->slice_table[left_xy[0]]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
2535 AV_COPY32(h->mv_cache[list][scan8[0] - 1 + 0 ], s->current_picture.motion_val[list][b_xy + h->b_stride*0]);
2536 AV_COPY32(h->mv_cache[list][scan8[0] - 1 + 8 ], s->current_picture.motion_val[list][b_xy + h->b_stride*1]);
2537 AV_COPY32(h->mv_cache[list][scan8[0] - 1 +16 ], s->current_picture.motion_val[list][b_xy + h->b_stride*2]);
2538 AV_COPY32(h->mv_cache[list][scan8[0] - 1 +24 ], s->current_picture.motion_val[list][b_xy + h->b_stride*3]);
2539 h->ref_cache[list][scan8[0] - 1 + 0 ]=
2540 h->ref_cache[list][scan8[0] - 1 + 8 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 2*0]];
2541 h->ref_cache[list][scan8[0] - 1 +16 ]=
2542 h->ref_cache[list][scan8[0] - 1 +24 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 2*1]];
2544 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 + 0 ]);
2545 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 + 8 ]);
2546 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 +16 ]);
2547 AV_ZERO32(h->mv_cache [list][scan8[0] - 1 +24 ]);
2548 h->ref_cache[list][scan8[0] - 1 + 0 ]=
2549 h->ref_cache[list][scan8[0] - 1 + 8 ]=
2550 h->ref_cache[list][scan8[0] - 1 + 16 ]=
2551 h->ref_cache[list][scan8[0] - 1 + 24 ]= LIST_NOT_USED;
2560 static void loop_filter(H264Context *h, int start_x, int end_x){
2561 MpegEncContext * const s = &h->s;
2562 uint8_t *dest_y, *dest_cb, *dest_cr;
2563 int linesize, uvlinesize, mb_x, mb_y;
2564 const int end_mb_y= s->mb_y + FRAME_MBAFF;
2565 const int old_slice_type= h->slice_type;
2566 const int pixel_shift = h->pixel_shift;
2568 if(h->deblocking_filter) {
2569 for(mb_x= start_x; mb_x<end_x; mb_x++){
2570 for(mb_y=end_mb_y - FRAME_MBAFF; mb_y<= end_mb_y; mb_y++){
2572 mb_xy = h->mb_xy = mb_x + mb_y*s->mb_stride;
2573 h->slice_num= h->slice_table[mb_xy];
2574 mb_type= s->current_picture.mb_type[mb_xy];
2575 h->list_count= h->list_counts[mb_xy];
2578 h->mb_mbaff = h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
2582 dest_y = s->current_picture.data[0] + ((mb_x << pixel_shift) + mb_y * s->linesize ) * 16;
2583 dest_cb = s->current_picture.data[1] + ((mb_x << pixel_shift) + mb_y * s->uvlinesize) * 8;
2584 dest_cr = s->current_picture.data[2] + ((mb_x << pixel_shift) + mb_y * s->uvlinesize) * 8;
2585 //FIXME simplify above
2588 linesize = h->mb_linesize = s->linesize * 2;
2589 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
2590 if(mb_y&1){ //FIXME move out of this function?
2591 dest_y -= s->linesize*15;
2592 dest_cb-= s->uvlinesize*7;
2593 dest_cr-= s->uvlinesize*7;
2596 linesize = h->mb_linesize = s->linesize;
2597 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
2599 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0);
2600 if(fill_filter_caches(h, mb_type))
2602 h->chroma_qp[0] = get_chroma_qp(h, 0, s->current_picture.qscale_table[mb_xy]);
2603 h->chroma_qp[1] = get_chroma_qp(h, 1, s->current_picture.qscale_table[mb_xy]);
2606 ff_h264_filter_mb (h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2608 ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, linesize, uvlinesize);
2613 h->slice_type= old_slice_type;
2615 s->mb_y= end_mb_y - FRAME_MBAFF;
2616 h->chroma_qp[0] = get_chroma_qp(h, 0, s->qscale);
2617 h->chroma_qp[1] = get_chroma_qp(h, 1, s->qscale);
2620 static void predict_field_decoding_flag(H264Context *h){
2621 MpegEncContext * const s = &h->s;
2622 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
2623 int mb_type = (h->slice_table[mb_xy-1] == h->slice_num)
2624 ? s->current_picture.mb_type[mb_xy-1]
2625 : (h->slice_table[mb_xy-s->mb_stride] == h->slice_num)
2626 ? s->current_picture.mb_type[mb_xy-s->mb_stride]
2628 h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
2631 static int decode_slice(struct AVCodecContext *avctx, void *arg){
2632 H264Context *h = *(void**)arg;
2633 MpegEncContext * const s = &h->s;
2634 const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F;
2635 int lf_x_start = s->mb_x;
2639 h->is_complex = FRAME_MBAFF || s->picture_structure != PICT_FRAME || s->codec_id != CODEC_ID_H264 ||
2640 (CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
2642 if( h->pps.cabac ) {
2644 align_get_bits( &s->gb );
2647 ff_init_cabac_states( &h->cabac);
2648 ff_init_cabac_decoder( &h->cabac,
2649 s->gb.buffer + get_bits_count(&s->gb)/8,
2650 (get_bits_left(&s->gb) + 7)/8);
2652 ff_h264_init_cabac_states(h);
2656 int ret = ff_h264_decode_mb_cabac(h);
2658 //STOP_TIMER("decode_mb_cabac")
2660 if(ret>=0) ff_h264_hl_decode_mb(h);
2662 if( ret >= 0 && FRAME_MBAFF ) { //FIXME optimal? or let mb_decode decode 16x32 ?
2665 ret = ff_h264_decode_mb_cabac(h);
2667 if(ret>=0) ff_h264_hl_decode_mb(h);
2670 eos = get_cabac_terminate( &h->cabac );
2672 if((s->workaround_bugs & FF_BUG_TRUNCATED) && h->cabac.bytestream > h->cabac.bytestream_end + 2){
2673 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);
2674 if (s->mb_x >= lf_x_start) loop_filter(h, lf_x_start, s->mb_x + 1);
2677 if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 2) {
2678 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);
2679 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);
2683 if( ++s->mb_x >= s->mb_width ) {
2684 loop_filter(h, lf_x_start, s->mb_x);
2685 s->mb_x = lf_x_start = 0;
2686 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2688 if(FIELD_OR_MBAFF_PICTURE) {
2690 if(FRAME_MBAFF && s->mb_y < s->mb_height)
2691 predict_field_decoding_flag(h);
2695 if( eos || s->mb_y >= s->mb_height ) {
2696 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2697 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);
2698 if (s->mb_x > lf_x_start) loop_filter(h, lf_x_start, s->mb_x);
2705 int ret = ff_h264_decode_mb_cavlc(h);
2707 if(ret>=0) ff_h264_hl_decode_mb(h);
2709 if(ret>=0 && FRAME_MBAFF){ //FIXME optimal? or let mb_decode decode 16x32 ?
2711 ret = ff_h264_decode_mb_cavlc(h);
2713 if(ret>=0) ff_h264_hl_decode_mb(h);
2718 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2719 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);
2723 if(++s->mb_x >= s->mb_width){
2724 loop_filter(h, lf_x_start, s->mb_x);
2725 s->mb_x = lf_x_start = 0;
2726 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2728 if(FIELD_OR_MBAFF_PICTURE) {
2730 if(FRAME_MBAFF && s->mb_y < s->mb_height)
2731 predict_field_decoding_flag(h);
2733 if(s->mb_y >= s->mb_height){
2734 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2736 if(get_bits_count(&s->gb) == s->gb.size_in_bits ) {
2737 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);
2741 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);
2748 if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){
2749 tprintf(s->avctx, "slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits);
2750 if(get_bits_count(&s->gb) == s->gb.size_in_bits ){
2751 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);
2752 if (s->mb_x > lf_x_start) loop_filter(h, lf_x_start, s->mb_x);
2756 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);
2765 for(;s->mb_y < s->mb_height; s->mb_y++){
2766 for(;s->mb_x < s->mb_width; s->mb_x++){
2767 int ret= decode_mb(h);
2769 ff_h264_hl_decode_mb(h);
2772 av_log(s->avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
2773 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);
2778 if(++s->mb_x >= s->mb_width){
2780 if(++s->mb_y >= s->mb_height){
2781 if(get_bits_count(s->gb) == s->gb.size_in_bits){
2782 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);
2786 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);
2793 if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){
2794 if(get_bits_count(s->gb) == s->gb.size_in_bits){
2795 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);
2799 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);
2806 ff_draw_horiz_band(s, 16*s->mb_y, 16);
2809 return -1; //not reached
2813 * Call decode_slice() for each context.
2815 * @param h h264 master context
2816 * @param context_count number of contexts to execute
2818 static void execute_decode_slices(H264Context *h, int context_count){
2819 MpegEncContext * const s = &h->s;
2820 AVCodecContext * const avctx= s->avctx;
2824 if (s->avctx->hwaccel)
2826 if(s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2828 if(context_count == 1) {
2829 decode_slice(avctx, &h);
2831 for(i = 1; i < context_count; i++) {
2832 hx = h->thread_context[i];
2833 hx->s.error_recognition = avctx->error_recognition;
2834 hx->s.error_count = 0;
2837 avctx->execute(avctx, (void *)decode_slice,
2838 h->thread_context, NULL, context_count, sizeof(void*));
2840 /* pull back stuff from slices to master context */
2841 hx = h->thread_context[context_count - 1];
2842 s->mb_x = hx->s.mb_x;
2843 s->mb_y = hx->s.mb_y;
2844 s->dropable = hx->s.dropable;
2845 s->picture_structure = hx->s.picture_structure;
2846 for(i = 1; i < context_count; i++)
2847 h->s.error_count += h->thread_context[i]->s.error_count;
2852 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
2853 MpegEncContext * const s = &h->s;
2854 AVCodecContext * const avctx= s->avctx;
2856 H264Context *hx; ///< thread context
2857 int context_count = 0;
2858 int next_avc= h->is_avc ? 0 : buf_size;
2860 h->max_contexts = avctx->thread_count;
2861 if(!(s->flags2 & CODEC_FLAG2_CHUNKS)){
2862 h->current_slice = 0;
2863 if (!s->first_field)
2864 s->current_picture_ptr= NULL;
2865 ff_h264_reset_sei(h);
2876 if(buf_index >= next_avc) {
2877 if(buf_index >= buf_size) break;
2879 for(i = 0; i < h->nal_length_size; i++)
2880 nalsize = (nalsize << 8) | buf[buf_index++];
2881 if(nalsize <= 0 || nalsize > buf_size - buf_index){
2882 av_log(h->s.avctx, AV_LOG_ERROR, "AVC: nal size %d\n", nalsize);
2885 next_avc= buf_index + nalsize;
2887 // start code prefix search
2888 for(; buf_index + 3 < next_avc; buf_index++){
2889 // This should always succeed in the first iteration.
2890 if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1)
2894 if(buf_index+3 >= buf_size) break;
2897 if(buf_index >= next_avc) continue;
2900 hx = h->thread_context[context_count];
2902 ptr= ff_h264_decode_nal(hx, buf + buf_index, &dst_length, &consumed, next_avc - buf_index);
2903 if (ptr==NULL || dst_length < 0){
2906 i= buf_index + consumed;
2907 if((s->workaround_bugs & FF_BUG_AUTODETECT) && i+3<next_avc &&
2908 buf[i]==0x00 && buf[i+1]==0x00 && buf[i+2]==0x01 && buf[i+3]==0xE0)
2909 s->workaround_bugs |= FF_BUG_TRUNCATED;
2911 if(!(s->workaround_bugs & FF_BUG_TRUNCATED)){
2912 while(ptr[dst_length - 1] == 0 && dst_length > 0)
2915 bit_length= !dst_length ? 0 : (8*dst_length - ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
2917 if(s->avctx->debug&FF_DEBUG_STARTCODE){
2918 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);
2921 if (h->is_avc && (nalsize != consumed) && nalsize){
2922 av_log(h->s.avctx, AV_LOG_DEBUG, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize);
2925 buf_index += consumed;
2927 //FIXME do not discard SEI id
2928 if(avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc == 0)
2933 switch(hx->nal_unit_type){
2935 if (h->nal_unit_type != NAL_IDR_SLICE) {
2936 av_log(h->s.avctx, AV_LOG_ERROR, "Invalid mix of idr and non-idr slices");
2939 idr(h); //FIXME ensure we don't loose some frames if there is reordering
2941 init_get_bits(&hx->s.gb, ptr, bit_length);
2943 hx->inter_gb_ptr= &hx->s.gb;
2944 hx->s.data_partitioning = 0;
2946 if((err = decode_slice_header(hx, h)))
2949 if (h->current_slice == 1) {
2950 if (s->avctx->hwaccel && s->avctx->hwaccel->start_frame(s->avctx, NULL, 0) < 0)
2952 if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
2953 ff_vdpau_h264_picture_start(s);
2956 s->current_picture_ptr->key_frame |=
2957 (hx->nal_unit_type == NAL_IDR_SLICE) ||
2958 (h->sei_recovery_frame_cnt >= 0);
2959 if(hx->redundant_pic_count==0
2960 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2961 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=AV_PICTURE_TYPE_B)
2962 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==AV_PICTURE_TYPE_I)
2963 && avctx->skip_frame < AVDISCARD_ALL){
2964 if(avctx->hwaccel) {
2965 if (avctx->hwaccel->decode_slice(avctx, &buf[buf_index - consumed], consumed) < 0)
2968 if(CONFIG_H264_VDPAU_DECODER && s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){
2969 static const uint8_t start_code[] = {0x00, 0x00, 0x01};
2970 ff_vdpau_add_data_chunk(s, start_code, sizeof(start_code));
2971 ff_vdpau_add_data_chunk(s, &buf[buf_index - consumed], consumed );
2977 init_get_bits(&hx->s.gb, ptr, bit_length);
2979 hx->inter_gb_ptr= NULL;
2981 if ((err = decode_slice_header(hx, h)) < 0)
2984 hx->s.data_partitioning = 1;
2988 init_get_bits(&hx->intra_gb, ptr, bit_length);
2989 hx->intra_gb_ptr= &hx->intra_gb;
2992 init_get_bits(&hx->inter_gb, ptr, bit_length);
2993 hx->inter_gb_ptr= &hx->inter_gb;
2995 if(hx->redundant_pic_count==0 && hx->intra_gb_ptr && hx->s.data_partitioning
2996 && s->context_initialized
2997 && (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc)
2998 && (avctx->skip_frame < AVDISCARD_BIDIR || hx->slice_type_nos!=AV_PICTURE_TYPE_B)
2999 && (avctx->skip_frame < AVDISCARD_NONKEY || hx->slice_type_nos==AV_PICTURE_TYPE_I)
3000 && avctx->skip_frame < AVDISCARD_ALL)
3004 init_get_bits(&s->gb, ptr, bit_length);
3005 ff_h264_decode_sei(h);
3008 init_get_bits(&s->gb, ptr, bit_length);
3009 ff_h264_decode_seq_parameter_set(h);
3011 if(s->flags& CODEC_FLAG_LOW_DELAY)
3014 if(avctx->has_b_frames < 2)
3015 avctx->has_b_frames= !s->low_delay;
3017 if (avctx->bits_per_raw_sample != h->sps.bit_depth_luma) {
3018 if (h->sps.bit_depth_luma >= 8 && h->sps.bit_depth_luma <= 10) {
3019 avctx->bits_per_raw_sample = h->sps.bit_depth_luma;
3020 h->pixel_shift = h->sps.bit_depth_luma > 8;
3022 ff_h264dsp_init(&h->h264dsp, h->sps.bit_depth_luma);
3023 ff_h264_pred_init(&h->hpc, s->codec_id, h->sps.bit_depth_luma);
3024 dsputil_init(&s->dsp, s->avctx);
3026 av_log(avctx, AV_LOG_DEBUG, "Unsupported bit depth: %d\n", h->sps.bit_depth_luma);
3032 init_get_bits(&s->gb, ptr, bit_length);
3034 ff_h264_decode_picture_parameter_set(h, bit_length);
3038 case NAL_END_SEQUENCE:
3039 case NAL_END_STREAM:
3040 case NAL_FILLER_DATA:
3042 case NAL_AUXILIARY_SLICE:
3045 av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", hx->nal_unit_type, bit_length);
3048 if(context_count == h->max_contexts) {
3049 execute_decode_slices(h, context_count);
3054 av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
3056 /* Slice could not be decoded in parallel mode, copy down
3057 * NAL unit stuff to context 0 and restart. Note that
3058 * rbsp_buffer is not transferred, but since we no longer
3059 * run in parallel mode this should not be an issue. */
3060 h->nal_unit_type = hx->nal_unit_type;
3061 h->nal_ref_idc = hx->nal_ref_idc;
3067 execute_decode_slices(h, context_count);
3072 * returns the number of bytes consumed for building the current frame
3074 static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){
3075 if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...)
3076 if(pos+10>buf_size) pos=buf_size; // oops ;)
3081 static int decode_frame(AVCodecContext *avctx,
3082 void *data, int *data_size,
3085 const uint8_t *buf = avpkt->data;
3086 int buf_size = avpkt->size;
3087 H264Context *h = avctx->priv_data;
3088 MpegEncContext *s = &h->s;
3089 AVFrame *pict = data;
3092 s->flags= avctx->flags;
3093 s->flags2= avctx->flags2;
3095 /* end of stream, output what is still in the buffers */
3097 if (buf_size == 0) {
3101 //FIXME factorize this with the output code below
3102 out = h->delayed_pic[0];
3104 for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
3105 if(h->delayed_pic[i]->poc < out->poc){
3106 out = h->delayed_pic[i];
3110 for(i=out_idx; h->delayed_pic[i]; i++)
3111 h->delayed_pic[i] = h->delayed_pic[i+1];
3114 *data_size = sizeof(AVFrame);
3115 *pict= *(AVFrame*)out;
3121 buf_index=decode_nal_units(h, buf, buf_size);
3125 if (!s->current_picture_ptr && h->nal_unit_type == NAL_END_SEQUENCE) {
3130 if(!(s->flags2 & CODEC_FLAG2_CHUNKS) && !s->current_picture_ptr){
3131 if (avctx->skip_frame >= AVDISCARD_NONREF)
3133 av_log(avctx, AV_LOG_ERROR, "no frame!\n");
3137 if(!(s->flags2 & CODEC_FLAG2_CHUNKS) || (s->mb_y >= s->mb_height && s->mb_height)){
3138 Picture *out = s->current_picture_ptr;
3139 Picture *cur = s->current_picture_ptr;
3140 int i, pics, out_of_order, out_idx;
3144 if (cur->field_poc[0]==INT_MAX || cur->field_poc[1]==INT_MAX) {
3145 /* Wait for second field. */
3149 cur->interlaced_frame = 0;
3150 cur->repeat_pict = 0;
3152 /* Signal interlacing information externally. */
3153 /* Prioritize picture timing SEI information over used decoding process if it exists. */
3155 if(h->sps.pic_struct_present_flag){
3156 switch (h->sei_pic_struct)
3158 case SEI_PIC_STRUCT_FRAME:
3160 case SEI_PIC_STRUCT_TOP_FIELD:
3161 case SEI_PIC_STRUCT_BOTTOM_FIELD:
3162 cur->interlaced_frame = 1;
3164 case SEI_PIC_STRUCT_TOP_BOTTOM:
3165 case SEI_PIC_STRUCT_BOTTOM_TOP:
3166 if (FIELD_OR_MBAFF_PICTURE)
3167 cur->interlaced_frame = 1;
3169 // try to flag soft telecine progressive
3170 cur->interlaced_frame = h->prev_interlaced_frame;
3172 case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
3173 case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
3174 // Signal the possibility of telecined film externally (pic_struct 5,6)
3175 // From these hints, let the applications decide if they apply deinterlacing.
3176 cur->repeat_pict = 1;
3178 case SEI_PIC_STRUCT_FRAME_DOUBLING:
3179 // Force progressive here, as doubling interlaced frame is a bad idea.
3180 cur->repeat_pict = 2;
3182 case SEI_PIC_STRUCT_FRAME_TRIPLING:
3183 cur->repeat_pict = 4;
3187 if ((h->sei_ct_type & 3) && h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
3188 cur->interlaced_frame = (h->sei_ct_type & (1<<1)) != 0;
3190 /* Derive interlacing flag from used decoding process. */
3191 cur->interlaced_frame = FIELD_OR_MBAFF_PICTURE;
3193 h->prev_interlaced_frame = cur->interlaced_frame;
3195 if (cur->field_poc[0] != cur->field_poc[1]){
3196 /* Derive top_field_first from field pocs. */
3197 cur->top_field_first = cur->field_poc[0] < cur->field_poc[1];
3199 if(cur->interlaced_frame || h->sps.pic_struct_present_flag){
3200 /* Use picture timing SEI information. Even if it is a information of a past frame, better than nothing. */
3201 if(h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM
3202 || h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
3203 cur->top_field_first = 1;
3205 cur->top_field_first = 0;
3207 /* Most likely progressive */
3208 cur->top_field_first = 0;
3212 //FIXME do something with unavailable reference frames
3214 /* Sort B-frames into display order */
3216 if(h->sps.bitstream_restriction_flag
3217 && s->avctx->has_b_frames < h->sps.num_reorder_frames){
3218 s->avctx->has_b_frames = h->sps.num_reorder_frames;
3222 if( s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT
3223 && !h->sps.bitstream_restriction_flag){
3224 s->avctx->has_b_frames= MAX_DELAYED_PIC_COUNT;
3229 while(h->delayed_pic[pics]) pics++;
3231 assert(pics <= MAX_DELAYED_PIC_COUNT);
3233 h->delayed_pic[pics++] = cur;
3234 if(cur->reference == 0)
3235 cur->reference = DELAYED_PIC_REF;
3237 out = h->delayed_pic[0];
3239 for(i=1; h->delayed_pic[i] && !h->delayed_pic[i]->key_frame && !h->delayed_pic[i]->mmco_reset; i++)
3240 if(h->delayed_pic[i]->poc < out->poc){
3241 out = h->delayed_pic[i];
3244 if(s->avctx->has_b_frames == 0 && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset))
3245 h->outputed_poc= INT_MIN;
3246 out_of_order = out->poc < h->outputed_poc;
3248 if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames >= h->sps.num_reorder_frames)
3250 else if((out_of_order && pics-1 == s->avctx->has_b_frames && s->avctx->has_b_frames < MAX_DELAYED_PIC_COUNT)
3252 ((h->outputed_poc != INT_MIN && out->poc > h->outputed_poc + 2)
3253 || cur->pict_type == AV_PICTURE_TYPE_B)))
3256 s->avctx->has_b_frames++;
3259 if(out_of_order || pics > s->avctx->has_b_frames){
3260 out->reference &= ~DELAYED_PIC_REF;
3261 for(i=out_idx; h->delayed_pic[i]; i++)
3262 h->delayed_pic[i] = h->delayed_pic[i+1];
3264 if(!out_of_order && pics > s->avctx->has_b_frames){
3265 *data_size = sizeof(AVFrame);
3267 if(out_idx==0 && h->delayed_pic[0] && (h->delayed_pic[0]->key_frame || h->delayed_pic[0]->mmco_reset)) {
3268 h->outputed_poc = INT_MIN;
3270 h->outputed_poc = out->poc;
3271 *pict= *(AVFrame*)out;
3273 av_log(avctx, AV_LOG_DEBUG, "no picture\n");
3278 assert(pict->data[0] || !*data_size);
3279 ff_print_debug_info(s, pict);
3280 //printf("out %d\n", (int)pict->data[0]);
3282 return get_consumed_bytes(s, buf_index, buf_size);
3285 static inline void fill_mb_avail(H264Context *h){
3286 MpegEncContext * const s = &h->s;
3287 const int mb_xy= s->mb_x + s->mb_y*s->mb_stride;
3290 h->mb_avail[0]= s->mb_x && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num;
3291 h->mb_avail[1]= h->slice_table[mb_xy - s->mb_stride ] == h->slice_num;
3292 h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num;
3298 h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num;
3299 h->mb_avail[4]= 1; //FIXME move out
3300 h->mb_avail[5]= 0; //FIXME move out
3308 #define SIZE (COUNT*40)
3314 // int int_temp[10000];
3316 AVCodecContext avctx;
3318 dsputil_init(&dsp, &avctx);
3320 init_put_bits(&pb, temp, SIZE);
3321 printf("testing unsigned exp golomb\n");
3322 for(i=0; i<COUNT; i++){
3324 set_ue_golomb(&pb, i);
3325 STOP_TIMER("set_ue_golomb");
3327 flush_put_bits(&pb);
3329 init_get_bits(&gb, temp, 8*SIZE);
3330 for(i=0; i<COUNT; i++){
3333 s= show_bits(&gb, 24);
3336 j= get_ue_golomb(&gb);
3338 printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
3341 STOP_TIMER("get_ue_golomb");
3345 init_put_bits(&pb, temp, SIZE);
3346 printf("testing signed exp golomb\n");
3347 for(i=0; i<COUNT; i++){
3349 set_se_golomb(&pb, i - COUNT/2);
3350 STOP_TIMER("set_se_golomb");
3352 flush_put_bits(&pb);
3354 init_get_bits(&gb, temp, 8*SIZE);
3355 for(i=0; i<COUNT; i++){
3358 s= show_bits(&gb, 24);
3361 j= get_se_golomb(&gb);
3362 if(j != i - COUNT/2){
3363 printf("mismatch! at %d (%d should be %d) bits:%6X\n", i, j, i, s);
3366 STOP_TIMER("get_se_golomb");
3370 printf("testing 4x4 (I)DCT\n");
3373 uint8_t src[16], ref[16];
3374 uint64_t error= 0, max_error=0;
3376 for(i=0; i<COUNT; i++){
3378 // printf("%d %d %d\n", r1, r2, (r2-r1)*16);
3379 for(j=0; j<16; j++){
3380 ref[j]= random()%255;
3381 src[j]= random()%255;
3384 h264_diff_dct_c(block, src, ref, 4);
3387 for(j=0; j<16; j++){
3388 // printf("%d ", block[j]);
3389 block[j]= block[j]*4;
3390 if(j&1) block[j]= (block[j]*4 + 2)/5;
3391 if(j&4) block[j]= (block[j]*4 + 2)/5;
3395 h->h264dsp.h264_idct_add(ref, block, 4);
3396 /* for(j=0; j<16; j++){
3397 printf("%d ", ref[j]);
3401 for(j=0; j<16; j++){
3402 int diff= FFABS(src[j] - ref[j]);
3405 max_error= FFMAX(max_error, diff);
3408 printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error );
3409 printf("testing quantizer\n");
3410 for(qp=0; qp<52; qp++){
3412 src1_block[i]= src2_block[i]= random()%255;
3415 printf("Testing NAL layer\n");
3417 uint8_t bitstream[COUNT];
3418 uint8_t nal[COUNT*2];
3420 memset(&h, 0, sizeof(H264Context));
3422 for(i=0; i<COUNT; i++){
3430 for(j=0; j<COUNT; j++){
3431 bitstream[j]= (random() % 255) + 1;
3434 for(j=0; j<zeros; j++){
3435 int pos= random() % COUNT;
3436 while(bitstream[pos] == 0){
3445 nal_length= encode_nal(&h, nal, bitstream, COUNT, COUNT*2);
3447 printf("encoding failed\n");
3451 out= ff_h264_decode_nal(&h, nal, &out_length, &consumed, nal_length);
3455 if(out_length != COUNT){
3456 printf("incorrect length %d %d\n", out_length, COUNT);
3460 if(consumed != nal_length){
3461 printf("incorrect consumed length %d %d\n", nal_length, consumed);
3465 if(memcmp(bitstream, out, COUNT)){
3466 printf("mismatch\n");
3472 printf("Testing RBSP\n");
3480 av_cold void ff_h264_free_context(H264Context *h)
3484 free_tables(h, 1); //FIXME cleanup init stuff perhaps
3486 for(i = 0; i < MAX_SPS_COUNT; i++)
3487 av_freep(h->sps_buffers + i);
3489 for(i = 0; i < MAX_PPS_COUNT; i++)
3490 av_freep(h->pps_buffers + i);
3493 av_cold int ff_h264_decode_end(AVCodecContext *avctx)
3495 H264Context *h = avctx->priv_data;
3496 MpegEncContext *s = &h->s;
3498 ff_h264_free_context(h);
3502 // memset(h, 0, sizeof(H264Context));
3507 static const AVProfile profiles[] = {
3508 { FF_PROFILE_H264_BASELINE, "Baseline" },
3509 { FF_PROFILE_H264_CONSTRAINED_BASELINE, "Constrained Baseline" },
3510 { FF_PROFILE_H264_MAIN, "Main" },
3511 { FF_PROFILE_H264_EXTENDED, "Extended" },
3512 { FF_PROFILE_H264_HIGH, "High" },
3513 { FF_PROFILE_H264_HIGH_10, "High 10" },
3514 { FF_PROFILE_H264_HIGH_10_INTRA, "High 10 Intra" },
3515 { FF_PROFILE_H264_HIGH_422, "High 4:2:2" },
3516 { FF_PROFILE_H264_HIGH_422_INTRA, "High 4:2:2 Intra" },
3517 { FF_PROFILE_H264_HIGH_444, "High 4:4:4" },
3518 { FF_PROFILE_H264_HIGH_444_PREDICTIVE, "High 4:4:4 Predictive" },
3519 { FF_PROFILE_H264_HIGH_444_INTRA, "High 4:4:4 Intra" },
3520 { FF_PROFILE_H264_CAVLC_444, "CAVLC 4:4:4" },
3521 { FF_PROFILE_UNKNOWN },
3524 AVCodec ff_h264_decoder = {
3528 sizeof(H264Context),
3529 ff_h264_decode_init,
3533 /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_DELAY |
3534 CODEC_CAP_SLICE_THREADS,
3536 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
3537 .profiles = NULL_IF_CONFIG_SMALL(profiles),
3540 #if CONFIG_H264_VDPAU_DECODER
3541 AVCodec ff_h264_vdpau_decoder = {
3545 sizeof(H264Context),
3546 ff_h264_decode_init,
3550 CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
3552 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
3553 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_VDPAU_H264, PIX_FMT_NONE},
3554 .profiles = NULL_IF_CONFIG_SMALL(profiles),