Libav
h264.h
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1 /*
2  * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4  *
5  * This file is part of Libav.
6  *
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.
11  *
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.
16  *
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
20  */
21 
28 #ifndef AVCODEC_H264_H
29 #define AVCODEC_H264_H
30 
31 #include "libavutil/intreadwrite.h"
32 #include "cabac.h"
33 #include "error_resilience.h"
34 #include "get_bits.h"
35 #include "mpegvideo.h"
36 #include "h264chroma.h"
37 #include "h264dsp.h"
38 #include "h264pred.h"
39 #include "h264qpel.h"
40 #include "rectangle.h"
41 
42 #define MAX_SPS_COUNT 32
43 #define MAX_PPS_COUNT 256
44 
45 #define MAX_MMCO_COUNT 66
46 
47 #define MAX_DELAYED_PIC_COUNT 16
48 
49 /* Compiling in interlaced support reduces the speed
50  * of progressive decoding by about 2%. */
51 #define ALLOW_INTERLACE
52 
53 #define FMO 0
54 
59 #define MAX_SLICES 16
60 
61 #ifdef ALLOW_INTERLACE
62 #define MB_MBAFF(h) h->mb_mbaff
63 #define MB_FIELD(h) h->mb_field_decoding_flag
64 #define FRAME_MBAFF(h) h->mb_aff_frame
65 #define FIELD_PICTURE(h) (h->picture_structure != PICT_FRAME)
66 #define LEFT_MBS 2
67 #define LTOP 0
68 #define LBOT 1
69 #define LEFT(i) (i)
70 #else
71 #define MB_MBAFF(h) 0
72 #define MB_FIELD(h) 0
73 #define FRAME_MBAFF(h) 0
74 #define FIELD_PICTURE(h) 0
75 #undef IS_INTERLACED
76 #define IS_INTERLACED(mb_type) 0
77 #define LEFT_MBS 1
78 #define LTOP 0
79 #define LBOT 0
80 #define LEFT(i) 0
81 #endif
82 #define FIELD_OR_MBAFF_PICTURE(h) (FRAME_MBAFF(h) || FIELD_PICTURE(h))
83 
84 #ifndef CABAC
85 #define CABAC(h) h->pps.cabac
86 #endif
87 
88 #define CHROMA422(h) (h->sps.chroma_format_idc == 2)
89 #define CHROMA444(h) (h->sps.chroma_format_idc == 3)
90 
91 #define EXTENDED_SAR 255
92 
93 #define MB_TYPE_REF0 MB_TYPE_ACPRED // dirty but it fits in 16 bit
94 #define MB_TYPE_8x8DCT 0x01000000
95 #define IS_REF0(a) ((a) & MB_TYPE_REF0)
96 #define IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT)
97 
98 #define QP_MAX_NUM (51 + 2 * 6) // The maximum supported qp
99 
100 /* NAL unit types */
101 enum {
103  NAL_DPA = 2,
104  NAL_DPB = 3,
105  NAL_DPC = 4,
107  NAL_SEI = 6,
108  NAL_SPS = 7,
109  NAL_PPS = 8,
110  NAL_AUD = 9,
116  NAL_FF_IGNORE = 0xff0f001,
117 };
118 
122 typedef enum {
128 } SEI_Type;
129 
133 typedef enum {
144 
148 typedef struct SPS {
149  unsigned int sps_id;
155  int poc_type;
163  int mb_width;
164  int mb_height;
166  int mb_aff;
168  int crop;
169 
170  /* those 4 are already in luma samples */
171  unsigned int crop_left;
172  unsigned int crop_right;
173  unsigned int crop_top;
174  unsigned int crop_bottom;
185  uint32_t time_scale;
187  short offset_for_ref_frame[256]; // FIXME dyn aloc?
197  int cpb_cnt;
205  int new;
206 } SPS;
207 
211 typedef struct PPS {
212  unsigned int sps_id;
213  int cabac;
217  unsigned int ref_count[2];
220  int init_qp;
221  int init_qs;
231 } PPS;
232 
236 typedef enum MMCOOpcode {
237  MMCO_END = 0,
244 } MMCOOpcode;
245 
249 typedef struct MMCO {
252  int long_arg;
253 } MMCO;
254 
258 typedef struct H264Context {
269 
273 
275  int chroma_qp[2]; // QPc
276 
277  int qp_thresh;
278 
279  /* coded dimensions -- 16 * mb w/h */
280  int width, height;
281  ptrdiff_t linesize, uvlinesize;
283 
284  int qscale;
289 
291  int flags;
293 
296 
297  // prediction stuff
300 
305 
307  int top_type;
310 
313 
318  unsigned int top_samples_available;
321  uint8_t (*top_borders[2])[(16 * 3) * 2];
322 
328 
330 
334  DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2];
335  DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8];
336 #define LIST_NOT_USED -1 // FIXME rename?
337 #define PART_NOT_AVAILABLE -2
338 
343 
348  int block_offset[2 * (16 * 3)];
349 
350  uint32_t *mb2b_xy; // FIXME are these 4 a good idea?
351  uint32_t *mb2br_xy;
352  int b_stride; // FIXME use s->b4_stride
353 
354  ptrdiff_t mb_linesize;
355  ptrdiff_t mb_uvlinesize;
356 
359 
360  uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; // FIXME should these be moved down?
361  uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64];
362  uint32_t(*dequant4_coeff[6])[16];
363  uint32_t(*dequant8_coeff[6])[64];
364 
366  uint16_t *slice_table;
370 
371  // interlacing specific flags
374  int mb_mbaff;
377 
378  DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4];
379 
380  // Weighted pred stuff
385  // The following 2 can be changed to int8_t but that causes 10cpu cycles speedloss
386  int luma_weight[48][2][2];
387  int chroma_weight[48][2][2][2];
388  int implicit_weight[48][48][2];
389 
395  int map_col_to_list0[2][16 + 32];
396  int map_col_to_list0_field[2][2][16 + 32];
397 
401  unsigned int ref_count[2];
402  unsigned int list_count;
404  Picture ref_list[2][48];
407  int ref2frm[MAX_SLICES][2][64];
408 
409  // data partitioning
414 
416  DECLARE_ALIGNED(16, int16_t, mb)[16 * 48 * 2];
417  DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2];
418  int16_t mb_padding[256 * 2];
419 
425 
426  /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0, 1, 2), 0x0? luma_cbp */
427  uint16_t *cbp_table;
428  int cbp;
429  int top_cbp;
430  int left_cbp;
431  /* chroma_pred_mode for i4x4 or i16x16, else 0 */
434  uint8_t (*mvd_table[2])[2];
435  DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5 * 8][2];
438 
451 
453 
454  int mb_x, mb_y;
460  int mb_num;
461  int mb_xy;
462 
464 
465  // deblock
469 
470  // =============================================================
471  // Things below are not used in the MB or more inner code
472 
476  unsigned int rbsp_buffer_size[2];
477 
481  int is_avc;
483  int got_first;
484 
487 
490 
492 
493  uint16_t *slice_table_base;
494 
495  // POC stuff
496  int poc_lsb;
497  int poc_msb;
499  int delta_poc[2];
506 
511 
516 
518 
527 
534 
537 
539 
545 
550 
558 
560 
566 
568 
576 
584 
592 
599 
604 
609 
618 
626 
631 #define FRAME_RECOVERED_IDR (1 << 0)
632 
636 #define FRAME_RECOVERED_SEI (1 << 1)
637 
639 
642 
643  // Timestamp stuff
646 
650  int16_t *dc_val_base;
651 
656 } H264Context;
657 
658 extern const uint8_t ff_h264_chroma_qp[3][QP_MAX_NUM + 1];
659 extern const uint16_t ff_h264_mb_sizes[4];
660 
665 
670 
675 
679 int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length);
680 
689 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src,
690  int *dst_length, int *consumed, int length);
691 
697 
701 int ff_h264_get_slice_type(const H264Context *h);
702 
708 
713 
717 
721 int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count);
722 
724  int first_slice);
725 
726 int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice);
727 
733 
738 int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma);
739 
743 void ff_h264_decode_init_vlc(void);
744 
750 
756 
758 
761 void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type);
762 
763 void ff_h264_filter_mb_fast(H264Context *h, int mb_x, int mb_y,
764  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
765  unsigned int linesize, unsigned int uvlinesize);
766 void ff_h264_filter_mb(H264Context *h, int mb_x, int mb_y,
767  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
768  unsigned int linesize, unsigned int uvlinesize);
769 
776 
777 /*
778  * o-o o-o
779  * / / /
780  * o-o o-o
781  * ,---'
782  * o-o o-o
783  * / / /
784  * o-o o-o
785  */
786 
787 /* Scan8 organization:
788  * 0 1 2 3 4 5 6 7
789  * 0 DY y y y y y
790  * 1 y Y Y Y Y
791  * 2 y Y Y Y Y
792  * 3 y Y Y Y Y
793  * 4 y Y Y Y Y
794  * 5 DU u u u u u
795  * 6 u U U U U
796  * 7 u U U U U
797  * 8 u U U U U
798  * 9 u U U U U
799  * 10 DV v v v v v
800  * 11 v V V V V
801  * 12 v V V V V
802  * 13 v V V V V
803  * 14 v V V V V
804  * DY/DU/DV are for luma/chroma DC.
805  */
806 
807 #define LUMA_DC_BLOCK_INDEX 48
808 #define CHROMA_DC_BLOCK_INDEX 49
809 
810 // This table must be here because scan8[constant] must be known at compiletime
811 static const uint8_t scan8[16 * 3 + 3] = {
812  4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8,
813  6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8,
814  4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8,
815  6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8,
816  4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8,
817  6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8,
818  4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8,
819  6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8,
820  4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8,
821  6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8,
822  4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8,
823  6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8,
824  0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8
825 };
826 
827 static av_always_inline uint32_t pack16to32(int a, int b)
828 {
829 #if HAVE_BIGENDIAN
830  return (b & 0xFFFF) + (a << 16);
831 #else
832  return (a & 0xFFFF) + (b << 16);
833 #endif
834 }
835 
836 static av_always_inline uint16_t pack8to16(int a, int b)
837 {
838 #if HAVE_BIGENDIAN
839  return (b & 0xFF) + (a << 8);
840 #else
841  return (a & 0xFF) + (b << 8);
842 #endif
843 }
844 
849 {
850  return h->pps.chroma_qp_table[t][qscale];
851 }
852 
857 {
858  const int index8 = scan8[n];
859  const int left = h->intra4x4_pred_mode_cache[index8 - 1];
860  const int top = h->intra4x4_pred_mode_cache[index8 - 8];
861  const int min = FFMIN(left, top);
862 
863  tprintf(h->avctx, "mode:%d %d min:%d\n", left, top, min);
864 
865  if (min < 0)
866  return DC_PRED;
867  else
868  return min;
869 }
870 
872 {
873  int8_t *i4x4 = h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
874  int8_t *i4x4_cache = h->intra4x4_pred_mode_cache;
875 
876  AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
877  i4x4[4] = i4x4_cache[7 + 8 * 3];
878  i4x4[5] = i4x4_cache[7 + 8 * 2];
879  i4x4[6] = i4x4_cache[7 + 8 * 1];
880 }
881 
883 {
884  const int mb_xy = h->mb_xy;
885  uint8_t *nnz = h->non_zero_count[mb_xy];
886  uint8_t *nnz_cache = h->non_zero_count_cache;
887 
888  AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]);
889  AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]);
890  AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]);
891  AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]);
892  AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]);
893  AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]);
894  AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]);
895  AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]);
896 
897  if (!h->chroma_y_shift) {
898  AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]);
899  AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]);
900  AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]);
901  AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]);
902  }
903 }
904 
906  int b_stride,
907  int b_xy, int b8_xy,
908  int mb_type, int list)
909 {
910  int16_t(*mv_dst)[2] = &h->cur_pic.motion_val[list][b_xy];
911  int16_t(*mv_src)[2] = &h->mv_cache[list][scan8[0]];
912  AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0);
913  AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1);
914  AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2);
915  AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3);
916  if (CABAC(h)) {
917  uint8_t (*mvd_dst)[2] = &h->mvd_table[list][FMO ? 8 * h->mb_xy
918  : h->mb2br_xy[h->mb_xy]];
919  uint8_t(*mvd_src)[2] = &h->mvd_cache[list][scan8[0]];
920  if (IS_SKIP(mb_type)) {
921  AV_ZERO128(mvd_dst);
922  } else {
923  AV_COPY64(mvd_dst, mvd_src + 8 * 3);
924  AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0);
925  AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1);
926  AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2);
927  }
928  }
929 
930  {
931  int8_t *ref_index = &h->cur_pic.ref_index[list][b8_xy];
932  int8_t *ref_cache = h->ref_cache[list];
933  ref_index[0 + 0 * 2] = ref_cache[scan8[0]];
934  ref_index[1 + 0 * 2] = ref_cache[scan8[4]];
935  ref_index[0 + 1 * 2] = ref_cache[scan8[8]];
936  ref_index[1 + 1 * 2] = ref_cache[scan8[12]];
937  }
938 }
939 
940 static av_always_inline void write_back_motion(H264Context *h, int mb_type)
941 {
942  const int b_stride = h->b_stride;
943  const int b_xy = 4 * h->mb_x + 4 * h->mb_y * h->b_stride; // try mb2b(8)_xy
944  const int b8_xy = 4 * h->mb_xy;
945 
946  if (USES_LIST(mb_type, 0)) {
947  write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 0);
948  } else {
949  fill_rectangle(&h->cur_pic.ref_index[0][b8_xy],
950  2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
951  }
952  if (USES_LIST(mb_type, 1))
953  write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 1);
954 
955  if (h->slice_type_nos == AV_PICTURE_TYPE_B && CABAC(h)) {
956  if (IS_8X8(mb_type)) {
957  uint8_t *direct_table = &h->direct_table[4 * h->mb_xy];
958  direct_table[1] = h->sub_mb_type[1] >> 1;
959  direct_table[2] = h->sub_mb_type[2] >> 1;
960  direct_table[3] = h->sub_mb_type[3] >> 1;
961  }
962  }
963 }
964 
966 {
968  return !(AV_RN64A(h->sub_mb_type) &
970  0x0001000100010001ULL));
971  else
972  return !(AV_RN64A(h->sub_mb_type) &
974  0x0001000100010001ULL));
975 }
976 
977 void ff_h264_draw_horiz_band(H264Context *h, int y, int height);
978 int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc);
981 
982 #endif /* AVCODEC_H264_H */
int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc)
Definition: h264.c:2822
int chroma_format_idc
Definition: h264.h:152
Picture default_ref_list[2][32]
base reference list for all slices of a coded picture
Definition: h264.h:519
static av_always_inline uint16_t pack8to16(int a, int b)
Definition: h264.h:836
void ff_h264_direct_dist_scale_factor(H264Context *const h)
Definition: h264_direct.c:50
GetBitContext inter_gb
Definition: h264.h:411
int video_signal_type_present_flag
Definition: h264.h:177
static av_always_inline int get_dct8x8_allowed(H264Context *h)
Definition: h264.h:965
int last_slice_type
Definition: h264.h:569
int ff_h264_decode_mb_cabac(H264Context *h)
Decode a CABAC coded macroblock.
Definition: h264_cabac.c:1881
Memory management control operation.
Definition: h264.h:249
int ff_h264_decode_seq_parameter_set(H264Context *h)
Decode SPS.
Definition: h264_ps.c:297
uint8_t * edge_emu_buffer
Definition: h264.h:649
int8_t * ref_index[2]
Definition: mpegvideo.h:140
int workaround_bugs
Definition: h264.h:292
unsigned int top_samples_available
Definition: h264.h:318
unsigned int topleft_samples_available
Definition: h264.h:317
int single_decode_warning
1 if the single thread fallback warning has already been displayed, 0 otherwise.
Definition: h264.h:565
GetBitContext gb
Definition: h264.h:267
5: top field, bottom field, top field repeated, in that order
Definition: h264.h:139
int sei_cpb_removal_delay
cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
Definition: h264.h:608
int low_delay
Definition: h264.h:288
int mb_num
Definition: h264.h:460
GetBitContext * intra_gb_ptr
Definition: h264.h:412
#define IS_SKIP(a)
Definition: mpegvideo.h:163
int mb_aff_frame
Definition: h264.h:372
int topleft_type
Definition: h264.h:306
int delta_poc[2]
Definition: h264.h:499
ptrdiff_t uvlinesize
Definition: h264.h:281
int last_qscale_diff
Definition: h264.h:433
#define LEFT_MBS
Definition: h264.h:66
int quincunx_subsampling
Definition: h264.h:591
int cbp
Definition: h264.h:428
3: top field, bottom field, in that order
Definition: h264.h:137
int first_field
Definition: h264.h:376
int ff_h264_check_intra4x4_pred_mode(H264Context *h)
Check if the top & left blocks are available if needed & change the dc mode so it only uses the avail...
Definition: h264.c:489
unregistered user data
Definition: h264.h:125
int weighted_bipred_idc
Definition: h264.h:219
int ff_h264_get_slice_type(const H264Context *h)
Reconstruct bitstream slice_type.
Definition: h264.c:3966
int chroma_qp_index_offset[2]
Definition: h264.h:222
int left_type[LEFT_MBS]
Definition: h264.h:309
H264ChromaContext h264chroma
Definition: h264.h:263
uint8_t cabac_state[1024]
Definition: h264.h:424
uint16_t * cbp_table
Definition: h264.h:427
int scaling_matrix_present
Definition: h264.h:190
int luma_weight_flag[2]
7.4.3.2 luma_weight_lX_flag
Definition: h264.h:640
MMCO mmco[MAX_MMCO_COUNT]
memory management control operations buffer.
Definition: h264.h:531
uint8_t scaling_matrix4[6][16]
Definition: h264.h:191
int topleft_partition
Definition: h264.h:312
7: frame doubling
Definition: h264.h:141
#define MAX_PPS_COUNT
Definition: h264.h:43
Sequence parameter set.
Definition: h264.h:148
int initial_cpb_removal_delay[32]
Initial timestamps for CPBs.
Definition: h264.h:645
int mb_y
Definition: h264.h:454
int coded_picture_number
Definition: h264.h:287
int bitstream_restriction_flag
Definition: h264.h:188
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:217
int ff_h264_decode_extradata(H264Context *h)
Definition: h264.c:1458
#define FMO
Definition: h264.h:53
AVBufferPool * mb_type_pool
Definition: h264.h:653
int outputed_poc
Definition: h264.h:525
int chroma_x_shift
Definition: h264.h:282
Picture parameter set.
Definition: h264.h:211
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:58
int flags
Definition: h264.h:291
const uint8_t * field_scan8x8_q0
Definition: h264.h:449
int frame_mbs_only_flag
Definition: h264.h:165
int mb_height
Definition: h264.h:458
int16_t * dc_val_base
Definition: h264.h:650
int is_avc
Used to parse AVC variant of h264.
Definition: h264.h:481
int mmco_index
Definition: h264.h:532
AVBufferPool * ref_index_pool
Definition: h264.h:655
MMCOOpcode
Memory management control operation opcode.
Definition: h264.h:236
uint8_t zigzag_scan8x8_cavlc[64]
Definition: h264.h:441
DSPContext dsp
Definition: h264.h:260
mpegvideo header.
uint32_t dequant8_buffer[6][QP_MAX_NUM+1][64]
Definition: h264.h:361
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
Definition: h264.h:334
void ff_h264_decode_init_vlc(void)
Definition: h264_cavlc.c:325
H264Context.
Definition: h264.h:258
int prev_poc_msb
poc_msb of the last reference pic for POC type 0
Definition: h264.h:501
int chroma_qp_diff
Definition: h264.h:230
static av_always_inline void write_back_motion(H264Context *h, int mb_type)
Definition: h264.h:940
uint32_t num_units_in_tick
Definition: h264.h:184
4: bottom field, top field, in that order
Definition: h264.h:138
int picture_structure
Definition: h264.h:375
int slice_type_nos
S free slice type (SI/SP are remapped to I/P)
Definition: h264.h:368
#define AV_COPY32(d, s)
Definition: intreadwrite.h:506
int profile_idc
Definition: h264.h:150
MMCOOpcode opcode
Definition: h264.h:250
H.264 DSP functions.
static av_always_inline uint32_t pack16to32(int a, int b)
Definition: h264.h:827
int mb_skip_run
Definition: h264.h:457
void ff_h264_init_cabac_states(H264Context *h)
Definition: h264_cabac.c:1262
void ff_h264_free_context(H264Context *h)
Free any data that may have been allocated in the H264 context like SPS, PPS etc. ...
Definition: h264.c:4983
static av_always_inline int pred_intra_mode(H264Context *h, int n)
Get the predicted intra4x4 prediction mode.
Definition: h264.h:856
#define USES_LIST(a, list)
does this mb use listX, note does not work if subMBs
Definition: mpegvideo.h:179
uint8_t * chroma_pred_mode_table
Definition: h264.h:432
int ff_h264_decode_ref_pic_list_reordering(H264Context *h)
Definition: h264_refs.c:212
#define MAX_THREADS
Definition: mpegvideo.h:64
unsigned int crop_top
frame_cropping_rect_top_offset
Definition: h264.h:173
int resync_mb_y
Definition: h264.h:456
int fixed_frame_rate_flag
Definition: h264.h:186
uint8_t scaling_matrix4[6][16]
Definition: h264.h:227
int ref2frm[MAX_SLICES][2][64]
reference to frame number lists, used in the loop filter, the first 2 are for -2,-1 ...
Definition: h264.h:407
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
Definition: h264.h:223
int short_pic_num
pic_num without wrapping (pic_num & max_pic_num)
Definition: h264.h:251
uint32_t(*[6] dequant4_coeff)[16]
Definition: h264.h:362
uint8_t
int prev_frame_num_offset
for POC type 2
Definition: h264.h:504
int use_weight
Definition: h264.h:381
int full_range
Definition: h264.h:178
unsigned int crop_left
frame_cropping_rect_left_offset
Definition: h264.h:171
int offset_for_non_ref_pic
Definition: h264.h:158
int ff_pred_weight_table(H264Context *h)
Definition: h264.c:2628
void ff_h264_reset_sei(H264Context *h)
Reset SEI values at the beginning of the frame.
Definition: h264_sei.c:37
int gaps_in_frame_num_allowed_flag
Definition: h264.h:162
Definition: h264.h:110
int data_partitioning
Definition: h264.h:286
int luma_weight[48][2][2]
Definition: h264.h:386
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
Definition: h264.h:202
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
Definition: h264.c:1295
enum AVColorPrimaries color_primaries
Definition: h264.h:180
#define b
Definition: input.c:52
Picture ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264.h:404
Motion estimation context.
Definition: mpegvideo.h:208
int cabac
entropy_coding_mode_flag
Definition: h264.h:213
int mb_xy
Definition: h264.h:461
Definition: h264.h:108
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:401
unsigned int crop_right
frame_cropping_rect_right_offset
Definition: h264.h:172
SEI_PicStructType
pic_struct in picture timing SEI message
Definition: h264.h:133
Context for storing H.264 prediction functions.
Definition: h264pred.h:92
void ff_h264_fill_mbaff_ref_list(H264Context *h)
Definition: h264_refs.c:336
int frame_recovered
Initial frame has been completely recovered.
Definition: h264.h:638
int height
Definition: h264.h:280
int mb_x
Definition: h264.h:454
int transform_bypass
qpprime_y_zero_transform_bypass_flag
Definition: h264.h:153
uint8_t chroma_qp_table[2][64]
pre-scaled (with chroma_qp_index_offset) version of qp_table
Definition: h264.h:229
int left_mb_xy[LEFT_MBS]
Definition: h264.h:304
int top_mb_xy
Definition: h264.h:302
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
Definition: h264.h:225
bitstream reader API header.
int chroma_y_shift
Definition: h264.h:282
#define MAX_DELAYED_PIC_COUNT
Definition: h264.h:47
int topright_type
Definition: h264.h:308
SEI_Type
SEI message types.
Definition: h264.h:122
static float t
Definition: output.c:52
Picture * next_output_pic
Definition: h264.h:524
const uint8_t ff_h264_chroma_qp[3][QP_MAX_NUM+1]
One chroma qp table for each supported bit depth (8, 9, 10).
Definition: h264_ps.c:71
#define AV_COPY64(d, s)
Definition: intreadwrite.h:510
int luma_log2_weight_denom
Definition: h264.h:383
uint8_t direct_cache[5 *8]
Definition: h264.h:437
int chroma_weight[48][2][2][2]
Definition: h264.h:387
The buffer pool.
int last_pocs[MAX_DELAYED_PIC_COUNT]
Definition: h264.h:523
int width
Definition: h264.h:280
#define MAX_SLICES
The maximum number of slices supported by the decoder.
Definition: h264.h:59
const uint8_t * zigzag_scan8x8_cavlc_q0
Definition: h264.h:447
int frame_num
Definition: h264.h:500
int got_first
this flag is != 0 if we've parsed a frame
Definition: h264.h:483
enum AVColorTransferCharacteristic color_trc
Definition: h264.h:181
int mb_aff
mb_adaptive_frame_field_flag
Definition: h264.h:166
H264PredContext hpc
Definition: h264.h:316
int16_t mb_luma_dc[3][16 *2]
Definition: h264.h:417
const uint8_t * zigzag_scan_q0
Definition: h264.h:445
MotionEstContext me
Definition: h264.h:265
int poc_type
pic_order_cnt_type
Definition: h264.h:155
int context_initialized
Definition: h264.h:290
int top_cbp
Definition: h264.h:429
int constrained_intra_pred
constrained_intra_pred_flag
Definition: h264.h:224
ParseContext parse_context
Definition: h264.h:266
int nal_unit_type
Definition: h264.h:474
int use_weight_chroma
Definition: h264.h:382
int num_reorder_frames
Definition: h264.h:189
void ff_h264_direct_ref_list_init(H264Context *const h)
Definition: h264_direct.c:102
static av_always_inline int get_chroma_qp(H264Context *h, int t, int qscale)
Get the chroma qp.
Definition: h264.h:848
const uint8_t * left_block
Definition: h264.h:311
GetBitContext * inter_gb_ptr
Definition: h264.h:413
int time_offset_length
Definition: h264.h:196
Picture * delayed_pic[MAX_DELAYED_PIC_COUNT+2]
Definition: h264.h:522
int mb_field_decoding_flag
Definition: h264.h:373
PPS pps
current pps
Definition: h264.h:358
uint8_t(*[2] mvd_table)[2]
Definition: h264.h:434
int prev_interlaced_frame
Complement sei_pic_struct SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced...
Definition: h264.h:583
int direct_spatial_mv_pred
Definition: h264.h:390
0: frame
Definition: h264.h:134
int weighted_pred
weighted_pred_flag
Definition: h264.h:218
H264QpelContext h264qpel
Definition: h264.h:264
ERContext er
Definition: h264.h:268
#define CABAC(h)
Definition: h264.h:85
int ff_h264_decode_mb_cavlc(H264Context *h)
Decode a macroblock.
Definition: h264_cavlc.c:692
int residual_color_transform_flag
residual_colour_transform_flag
Definition: h264.h:203
uint8_t * list_counts
Array of list_count per MB specifying the slice type.
Definition: h264.h:403
int delta_pic_order_always_zero_flag
Definition: h264.h:157
int map_col_to_list0[2][16+32]
Definition: h264.h:395
int offset_for_top_to_bottom_field
Definition: h264.h:159
static av_always_inline void write_back_motion_list(H264Context *h, int b_stride, int b_xy, int b8_xy, int mb_type, int list)
Definition: h264.h:905
uint8_t zigzag_scan8x8[64]
Definition: h264.h:440
int col_parity
Definition: h264.h:391
static const uint8_t scan8[16 *3+3]
Definition: h264.h:811
const uint16_t ff_h264_mb_sizes[4]
Definition: h264.c:51
int chroma_pred_mode
Definition: h264.h:298
int crop
frame_cropping_flag
Definition: h264.h:168
int ff_h264_decode_init(AVCodecContext *avctx)
Definition: h264.c:1517
uint8_t * direct_table
Definition: h264.h:436
uint8_t scaling_matrix8[6][64]
Definition: h264.h:228
int nal_length_size
Number of bytes used for nal length (1, 2 or 4)
Definition: h264.h:482
useful rectangle filling function
CABACContext cabac
Cabac.
Definition: h264.h:423
void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type)
Definition: h264_direct.c:621
unsigned int left_samples_available
Definition: h264.h:320
#define IS_8X8(a)
Definition: mpegvideo.h:171
int next_mb_skipped
Definition: h264.h:295
Context for storing H.264 DSP functions.
Definition: h264dsp.h:41
int ref_frame_count
num_ref_frames
Definition: h264.h:161
Picture * long_ref[32]
Definition: h264.h:521
void ff_h264_filter_mb(H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize)
int frame_num_offset
for POC type 2
Definition: h264.h:503
#define AV_COPY16(d, s)
Definition: intreadwrite.h:502
int initial_cpb_removal_delay_length
initial_cpb_removal_delay_length_minus1 + 1
Definition: h264.h:198
int x264_build
Definition: h264.h:452
uint32_t * mb2br_xy
Definition: h264.h:351
#define MB_TYPE_DIRECT2
Definition: avcodec.h:810
ptrdiff_t linesize
Definition: h264.h:281
#define FFMIN(a, b)
Definition: common.h:57
uint16_t * slice_table
slice_table_base + 2*mb_stride + 1
Definition: h264.h:366
uint8_t field_scan8x8_cavlc[64]
Definition: h264.h:444
int poc_cycle_length
num_ref_frames_in_pic_order_cnt_cycle
Definition: h264.h:160
int colour_description_present_flag
Definition: h264.h:179
AVRational sar
Definition: h264.h:176
int redundant_pic_count
Definition: h264.h:517
int sei_frame_packing_present
frame_packing_arrangment SEI message
Definition: h264.h:588
int16_t(*[2] motion_val)[2]
Definition: mpegvideo.h:107
int long_ref_count
number of actual long term references
Definition: h264.h:535
Picture.
Definition: mpegvideo.h:99
int cabac_init_idc
Definition: h264.h:538
SPS sps
current sps
Definition: h264.h:357
PPS * pps_buffers[MAX_PPS_COUNT]
Definition: h264.h:489
uint8_t mvd_cache[2][5 *8][2]
Definition: h264.h:435
static void fill_rectangle(SDL_Surface *screen, int x, int y, int w, int h, int color)
Definition: avplay.c:396
#define MAX_SPS_COUNT
Definition: h264.h:42
int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length)
Decode PPS.
Definition: h264_ps.c:524
int dist_scale_factor[32]
Definition: h264.h:393
int init_qp
pic_init_qp_minus26 + 26
Definition: h264.h:220
int mmco_reset
Definition: h264.h:533
int direct_8x8_inference_flag
Definition: h264.h:167
int8_t intra4x4_pred_mode_cache[5 *8]
Definition: h264.h:314
uint8_t * bipred_scratchpad
Definition: h264.h:648
int poc_lsb
Definition: h264.h:496
int max_pic_num
max_frame_num or 2 * max_frame_num for field pics.
Definition: h264.h:515
int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice)
Definition: h264_refs.c:534
unsigned int topright_samples_available
Definition: h264.h:319
uint8_t scaling_matrix8[6][64]
Definition: h264.h:192
frame packing arrangement
Definition: h264.h:127
const uint8_t * zigzag_scan8x8_q0
Definition: h264.h:446
int curr_pic_num
frame_num for frames or 2 * frame_num + 1 for field pics.
Definition: h264.h:510
int slice_type
Definition: h264.h:367
Definition: h264.h:105
int left_cbp
Definition: h264.h:430
int top_type
Definition: h264.h:307
static av_always_inline void write_back_non_zero_count(H264Context *h)
Definition: h264.h:882
uint32_t dequant4_buffer[6][QP_MAX_NUM+1][16]
Definition: h264.h:360
ptrdiff_t mb_uvlinesize
Definition: h264.h:355
unsigned int list_count
Definition: h264.h:402
unsigned int sps_id
Definition: h264.h:149
int topright_mb_xy
Definition: h264.h:303
GetBitContext intra_gb
Definition: h264.h:410
int dequant_coeff_pps
reinit tables when pps changes
Definition: h264.h:491
int pic_order_present
pic_order_present_flag
Definition: h264.h:214
Picture cur_pic
Definition: h264.h:272
SPS * sps_buffers[MAX_SPS_COUNT]
Definition: h264.h:488
struct H264Context * thread_context[MAX_THREADS]
Definition: h264.h:544
int chroma_log2_weight_denom
Definition: h264.h:384
int bit_depth_luma
luma bit depth from sps to detect changes
Definition: h264.h:485
short offset_for_ref_frame[256]
Definition: h264.h:187
int chroma_format_idc
chroma format from sps to detect changes
Definition: h264.h:486
VideoDSPContext vdsp
Definition: h264.h:261
int timing_info_present_flag
Definition: h264.h:183
int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count)
Execute the reference picture marking (memory management control operations).
Definition: h264_refs.c:568
int mb_stride
Definition: h264.h:459
int vcl_hrd_parameters_present_flag
Definition: h264.h:194
AVCodecContext * avctx
Definition: h264.h:259
#define MB_TYPE_8x16
Definition: avcodec.h:807
Definition: h264.h:109
int slice_alpha_c0_offset
Definition: h264.h:467
1: top field
Definition: h264.h:135
void ff_h264_remove_all_refs(H264Context *h)
Definition: h264_refs.c:472
int prev_frame_num
frame_num of the last pic for POC type 1/2
Definition: h264.h:505
int topleft_mb_xy
Definition: h264.h:301
int next_outputed_poc
Definition: h264.h:526
int ff_h264_decode_sei(H264Context *h)
Decode SEI.
Definition: h264_sei.c:202
int poc_msb
Definition: h264.h:497
int implicit_weight[48][48][2]
Definition: h264.h:388
int recovery_frame
recovery_frame is the frame_num at which the next frame should be fully constructed.
Definition: h264.h:625
int max_contexts
Max number of threads / contexts.
Definition: h264.h:557
main external API structure.
Definition: avcodec.h:1054
int dpb_output_delay_length
dpb_output_delay_length_minus1 + 1
Definition: h264.h:200
Definition: h264.h:237
int vui_parameters_present_flag
Definition: h264.h:175
2: bottom field
Definition: h264.h:136
#define QP_MAX_NUM
Definition: h264.h:98
AVColorTransferCharacteristic
Definition: avcodec.h:561
int resync_mb_x
Definition: h264.h:455
int16_t mb[16 *48 *2]
as a dct coeffecient is int32_t in high depth, we need to reserve twice the space.
Definition: h264.h:416
int frame_packing_arrangement_type
Definition: h264.h:589
int prev_mb_skipped
Definition: h264.h:294
int constraint_set_flags
constraint_set[0-3]_flag
Definition: h264.h:204
SEI_PicStructType sei_pic_struct
pic_struct in picture timing SEI message
Definition: h264.h:575
Picture * short_ref[32]
Definition: h264.h:520
AVColorPrimaries
Definition: avcodec.h:549
int slice_beta_offset
Definition: h264.h:468
const uint8_t * field_scan8x8_cavlc_q0
Definition: h264.h:450
uint32_t(*[6] dequant8_coeff)[64]
Definition: h264.h:363
int qp_thresh
QP threshold to skip loopfilter.
Definition: h264.h:277
rational number numerator/denominator
Definition: rational.h:43
#define MAX_MMCO_COUNT
Definition: h264.h:45
int pixel_shift
0 for 8-bit H264, 1 for high-bit-depth H264
Definition: h264.h:274
int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb, int first_slice)
Definition: h264_refs.c:732
int16_t mb_padding[256 *2]
as mb is addressed by scantable[i] and scantable is uint8_t we can either check that i is not too lar...
Definition: h264.h:418
AVPictureType
Definition: avutil.h:252
unsigned int sps_id
Definition: h264.h:212
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
Definition: h264.h:156
6: bottom field, top field, bottom field repeated, in that order
Definition: h264.h:140
int sei_buffering_period_present
Buffering period SEI flag.
Definition: h264.h:644
int block_offset[2 *(16 *3)]
block_offset[ 0..23] for frame macroblocks block_offset[24..47] for field macroblocks ...
Definition: h264.h:348
uint32_t time_scale
Definition: h264.h:185
int transform_8x8_mode
transform_8x8_mode_flag
Definition: h264.h:226
H.264 / AVC / MPEG4 prediction functions.
int pic_struct_present_flag
Definition: h264.h:195
Definition: h264.h:103
uint8_t zigzag_scan[16]
Definition: h264.h:439
void ff_h264_filter_mb_fast(H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize)
picture timing
Definition: h264.h:124
Definition: vp9.h:56
#define AV_ZERO128(d)
Definition: intreadwrite.h:542
int height
Definition: gxfenc.c:72
int is_complex
Definition: h264.h:463
AVBufferPool * qscale_table_pool
Definition: h264.h:652
int slice_context_count
Definition: h264.h:559
AVBufferPool * motion_val_pool
Definition: h264.h:654
int mb_height
pic_height_in_map_units_minus1 + 1
Definition: h264.h:164
Picture * DPB
Definition: h264.h:270
uint8_t * rbsp_buffer[2]
Definition: h264.h:475
int init_qs
pic_init_qs_minus26 + 26
Definition: h264.h:221
int qscale
Definition: h264.h:284
int dist_scale_factor_field[2][32]
Definition: h264.h:394
#define tprintf(p,...)
Definition: get_bits.h:626
#define AV_COPY128(d, s)
Definition: intreadwrite.h:514
int nal_hrd_parameters_present_flag
Definition: h264.h:193
const uint8_t * intra_pcm_ptr
Definition: h264.h:415
ptrdiff_t mb_linesize
may be equal to s->linesize or s->linesize * 2, for mbaff
Definition: h264.h:354
uint16_t * slice_table_base
Definition: h264.h:493
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
Definition: h264.h:154
#define MB_TYPE_8x8
Definition: avcodec.h:808
Bi-dir predicted.
Definition: avutil.h:255
int cur_chroma_format_idc
Definition: h264.h:647
const uint8_t * ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length)
Decode a network abstraction layer unit.
Definition: h264.c:577
int long_arg
index, pic_num, or num long refs depending on opcode
Definition: h264.h:252
int sei_ct_type
Bit set of clock types for fields/frames in picture timing SEI message.
Definition: h264.h:598
int chroma_qp[2]
Definition: h264.h:275
#define MB_TYPE_16x8
Definition: avcodec.h:806
uint16_t sub_mb_type[4]
Definition: h264.h:378
int bit_depth_luma
bit_depth_luma_minus8 + 8
Definition: h264.h:201
static av_always_inline void write_back_intra_pred_mode(H264Context *h)
Definition: h264.h:871
int intra16x16_pred_mode
Definition: h264.h:299
int prev_poc_lsb
poc_lsb of the last reference pic for POC type 0
Definition: h264.h:502
Definition: h264.h:104
int col_fieldoff
Definition: h264.h:392
Picture * cur_pic_ptr
Definition: h264.h:271
Definition: h264.h:107
uint8_t non_zero_count_cache[15 *8]
non zero coeff count cache.
Definition: h264.h:327
uint8_t(*[2] top_borders)[(16 *3)*2]
Definition: h264.h:321
int content_interpretation_type
Definition: h264.h:590
int mb_width
Definition: h264.h:458
enum AVPictureType pict_type
Definition: h264.h:567
int current_slice
current slice number, used to initalize slice_num of each thread/context
Definition: h264.h:549
buffering period (H.264, D.1.1)
Definition: h264.h:123
int mb_width
pic_width_in_mbs_minus1 + 1
Definition: h264.h:163
int slice_group_count
num_slice_groups_minus1 + 1
Definition: h264.h:215
uint32_t * mb2b_xy
Definition: h264.h:350
int cpb_cnt
See H.264 E.1.2.
Definition: h264.h:197
int slice_type_fixed
Definition: h264.h:369
int delta_poc_bottom
Definition: h264.h:498
const uint8_t * field_scan_q0
Definition: h264.h:448
int ff_h264_fill_default_ref_list(H264Context *h)
Fill the default_ref_list.
Definition: h264_refs.c:116
H264DSPContext h264dsp
Definition: h264.h:262
int ff_h264_get_profile(SPS *sps)
compute profile from sps
Definition: h264.c:3024
uint8_t field_scan8x8[64]
Definition: h264.h:443
AVColorSpace
Definition: avcodec.h:579
#define av_always_inline
Definition: attributes.h:40
int chroma_weight_flag[2]
7.4.3.2 chroma_weight_lX_flag
Definition: h264.h:641
int8_t * intra4x4_pred_mode
Definition: h264.h:315
int cpb_removal_delay_length
cpb_removal_delay_length_minus1 + 1
Definition: h264.h:199
8: frame tripling
Definition: h264.h:142
int deblocking_filter
disable_deblocking_filter_idc with 1 <-> 0
Definition: h264.h:466
#define AV_RN64A(p)
Definition: intreadwrite.h:450
int map_col_to_list0_field[2][2][16+32]
Definition: h264.h:396
#define LIST_NOT_USED
Definition: h264.h:336
uint8_t(* non_zero_count)[48]
Definition: h264.h:329
unsigned int crop_bottom
frame_cropping_rect_bottom_offset
Definition: h264.h:174
float min
int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma)
Check if the top & left blocks are available if needed & change the dc mode so it only uses the avail...
Definition: h264.c:536
int slice_num
Definition: h264.h:365
int sei_recovery_frame_cnt
recovery_frame_cnt from SEI message
Definition: h264.h:617
int droppable
Definition: h264.h:285
int level_idc
Definition: h264.h:151
int nal_ref_idc
Definition: h264.h:473
uint8_t field_scan[16]
Definition: h264.h:442
int ff_set_ref_count(H264Context *h)
Definition: h264.c:3272
void ff_h264_hl_decode_mb(H264Context *h)
Definition: h264.c:2608
void ff_h264_draw_horiz_band(H264Context *h, int y, int height)
Definition: h264.c:212
int b_stride
Definition: h264.h:352
int sei_dpb_output_delay
dpb_output_delay in picture timing SEI message, see H.264 C.2.2
Definition: h264.h:603
unsigned int rbsp_buffer_size[2]
Definition: h264.h:476
recovery point (frame # to decoder sync)
Definition: h264.h:126
Context Adaptive Binary Arithmetic Coder.
DSPContext.
Definition: dsputil.h:124
int neighbor_transform_size
number of neighbors (top and/or left) that used 8x8 dct
Definition: h264.h:342
int8_t ref_cache[2][5 *8]
Definition: h264.h:335
int mb_mbaff
mb_aff_frame && mb_field_decoding_flag
Definition: h264.h:374
int short_ref_count
number of actual short term references
Definition: h264.h:536
int mb_slice_group_map_type
Definition: h264.h:216
enum AVColorSpace colorspace
Definition: h264.h:182