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 "dsputil.h"
33 #include "cabac.h"
34 #include "get_bits.h"
35 #include "mpegvideo.h"
36 #include "h264dsp.h"
37 #include "h264pred.h"
38 #include "rectangle.h"
39 
40 #define MAX_SPS_COUNT 32
41 #define MAX_PPS_COUNT 256
42 
43 #define MAX_MMCO_COUNT 66
44 
45 #define MAX_DELAYED_PIC_COUNT 16
46 
47 /* Compiling in interlaced support reduces the speed
48  * of progressive decoding by about 2%. */
49 #define ALLOW_INTERLACE
50 
51 #define FMO 0
52 
57 #define MAX_SLICES 16
58 
59 #ifdef ALLOW_INTERLACE
60 #define MB_MBAFF h->mb_mbaff
61 #define MB_FIELD h->mb_field_decoding_flag
62 #define FRAME_MBAFF h->mb_aff_frame
63 #define FIELD_PICTURE (h->picture_structure != PICT_FRAME)
64 #define LEFT_MBS 2
65 #define LTOP 0
66 #define LBOT 1
67 #define LEFT(i) (i)
68 #else
69 #define MB_MBAFF 0
70 #define MB_FIELD 0
71 #define FRAME_MBAFF 0
72 #define FIELD_PICTURE 0
73 #undef IS_INTERLACED
74 #define IS_INTERLACED(mb_type) 0
75 #define LEFT_MBS 1
76 #define LTOP 0
77 #define LBOT 0
78 #define LEFT(i) 0
79 #endif
80 #define FIELD_OR_MBAFF_PICTURE (FRAME_MBAFF || FIELD_PICTURE)
81 
82 #ifndef CABAC
83 #define CABAC h->pps.cabac
84 #endif
85 
86 #define CHROMA422 (h->sps.chroma_format_idc == 2)
87 #define CHROMA444 (h->sps.chroma_format_idc == 3)
88 
89 #define EXTENDED_SAR 255
90 
91 #define MB_TYPE_REF0 MB_TYPE_ACPRED // dirty but it fits in 16 bit
92 #define MB_TYPE_8x8DCT 0x01000000
93 #define IS_REF0(a) ((a) & MB_TYPE_REF0)
94 #define IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT)
95 
96 #define QP_MAX_NUM (51 + 2 * 6) // The maximum supported qp
97 
98 /* NAL unit types */
99 enum {
114  NAL_FF_IGNORE = 0xff0f001,
115 };
116 
120 typedef enum {
125 } SEI_Type;
126 
130 typedef enum {
141 
145 typedef struct SPS {
151  int poc_type;
159  int mb_width;
160  int mb_height;
162  int mb_aff;
164  int crop;
165  unsigned int crop_left;
166  unsigned int crop_right;
167  unsigned int crop_top;
168  unsigned int crop_bottom;
179  uint32_t time_scale;
181  short offset_for_ref_frame[256]; // FIXME dyn aloc?
191  int cpb_cnt;
199  int new;
200 } SPS;
201 
205 typedef struct PPS {
206  unsigned int sps_id;
207  int cabac;
211  unsigned int ref_count[2];
214  int init_qp;
215  int init_qs;
225 } PPS;
226 
230 typedef enum MMCOOpcode {
231  MMCO_END = 0,
238 } MMCOOpcode;
239 
243 typedef struct MMCO {
246  int long_arg;
247 } MMCO;
248 
252 typedef struct H264Context {
261 
267 
269  int chroma_qp[2]; // QPc
270 
271  int qp_thresh;
272 
273  int width, height;
276 
277  int qscale;
282 
284  int flags;
286 
289 
290  // prediction stuff
293 
298 
300  int top_type;
303 
306 
311  unsigned int top_samples_available;
314  uint8_t (*top_borders[2])[(16 * 3) * 2];
315 
321 
323 
327  DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2];
328  DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8];
329 #define LIST_NOT_USED -1 // FIXME rename?
330 #define PART_NOT_AVAILABLE -2
331 
336 
341  int block_offset[2 * (16 * 3)];
342 
343  uint32_t *mb2b_xy; // FIXME are these 4 a good idea?
344  uint32_t *mb2br_xy;
345  int b_stride; // FIXME use s->b4_stride
346 
349 
352 
353  unsigned current_sps_id;
355 
359  PPS pps; // FIXME move to Picture perhaps? (->no) do we need that?
360 
361  uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; // FIXME should these be moved down?
362  uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64];
363  uint32_t(*dequant4_coeff[6])[16];
364  uint32_t(*dequant8_coeff[6])[64];
365 
367  uint16_t *slice_table;
371 
372  // interlacing specific flags
375  int mb_mbaff;
378 
379  DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4];
380 
381  // Weighted pred stuff
386  // The following 2 can be changed to int8_t but that causes 10cpu cycles speedloss
387  int luma_weight[48][2][2];
388  int chroma_weight[48][2][2][2];
389  int implicit_weight[48][48][2];
390 
396  int map_col_to_list0[2][16 + 32];
397  int map_col_to_list0_field[2][2][16 + 32];
398 
402  unsigned int ref_count[2];
403  unsigned int list_count;
405  Picture ref_list[2][48];
408  int ref2frm[MAX_SLICES][2][64];
409 
410  // data partitioning
415 
416  DECLARE_ALIGNED(16, DCTELEM, mb)[16 * 48 * 2];
418  DCTELEM 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 
591 
596 
601 
610 
613 
614  // Timestamp stuff
617 
621  int16_t *dc_val_base;
622 } H264Context;
623 
624 extern const uint8_t ff_h264_chroma_qp[3][QP_MAX_NUM + 1];
625 extern const uint16_t ff_h264_mb_sizes[4];
626 
631 
636 
641 
645 int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length);
646 
655 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src,
656  int *dst_length, int *consumed, int length);
657 
663 
667 int ff_h264_get_slice_type(const H264Context *h);
668 
674 
679 
683 
687 int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count);
688 
690  int first_slice);
691 
692 int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice);
693 
699 
704 int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma);
705 
711 
717 
723 
725 
728 void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type);
729 
730 void ff_h264_filter_mb_fast(H264Context *h, int mb_x, int mb_y,
731  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
732  unsigned int linesize, unsigned int uvlinesize);
733 void ff_h264_filter_mb(H264Context *h, int mb_x, int mb_y,
734  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
735  unsigned int linesize, unsigned int uvlinesize);
736 
743 
744 /*
745  * o-o o-o
746  * / / /
747  * o-o o-o
748  * ,---'
749  * o-o o-o
750  * / / /
751  * o-o o-o
752  */
753 
754 /* Scan8 organization:
755  * 0 1 2 3 4 5 6 7
756  * 0 DY y y y y y
757  * 1 y Y Y Y Y
758  * 2 y Y Y Y Y
759  * 3 y Y Y Y Y
760  * 4 y Y Y Y Y
761  * 5 DU u u u u u
762  * 6 u U U U U
763  * 7 u U U U U
764  * 8 u U U U U
765  * 9 u U U U U
766  * 10 DV v v v v v
767  * 11 v V V V V
768  * 12 v V V V V
769  * 13 v V V V V
770  * 14 v V V V V
771  * DY/DU/DV are for luma/chroma DC.
772  */
773 
774 #define LUMA_DC_BLOCK_INDEX 48
775 #define CHROMA_DC_BLOCK_INDEX 49
776 
777 // This table must be here because scan8[constant] must be known at compiletime
778 static const uint8_t scan8[16 * 3 + 3] = {
779  4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8,
780  6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8,
781  4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8,
782  6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8,
783  4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8,
784  6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8,
785  4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8,
786  6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8,
787  4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8,
788  6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8,
789  4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8,
790  6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8,
791  0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8
792 };
793 
794 static av_always_inline uint32_t pack16to32(int a, int b)
795 {
796 #if HAVE_BIGENDIAN
797  return (b & 0xFFFF) + (a << 16);
798 #else
799  return (a & 0xFFFF) + (b << 16);
800 #endif
801 }
802 
803 static av_always_inline uint16_t pack8to16(int a, int b)
804 {
805 #if HAVE_BIGENDIAN
806  return (b & 0xFF) + (a << 8);
807 #else
808  return (a & 0xFF) + (b << 8);
809 #endif
810 }
811 
816 {
817  return h->pps.chroma_qp_table[t][qscale];
818 }
819 
824 {
825  const int index8 = scan8[n];
826  const int left = h->intra4x4_pred_mode_cache[index8 - 1];
827  const int top = h->intra4x4_pred_mode_cache[index8 - 8];
828  const int min = FFMIN(left, top);
829 
830  tprintf(h->avctx, "mode:%d %d min:%d\n", left, top, min);
831 
832  if (min < 0)
833  return DC_PRED;
834  else
835  return min;
836 }
837 
839 {
840  int8_t *i4x4 = h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
841  int8_t *i4x4_cache = h->intra4x4_pred_mode_cache;
842 
843  AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
844  i4x4[4] = i4x4_cache[7 + 8 * 3];
845  i4x4[5] = i4x4_cache[7 + 8 * 2];
846  i4x4[6] = i4x4_cache[7 + 8 * 1];
847 }
848 
850 {
851  const int mb_xy = h->mb_xy;
852  uint8_t *nnz = h->non_zero_count[mb_xy];
853  uint8_t *nnz_cache = h->non_zero_count_cache;
854 
855  AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]);
856  AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]);
857  AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]);
858  AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]);
859  AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]);
860  AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]);
861  AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]);
862  AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]);
863 
864  if (!h->chroma_y_shift) {
865  AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]);
866  AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]);
867  AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]);
868  AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]);
869  }
870 }
871 
873  int b_stride,
874  int b_xy, int b8_xy,
875  int mb_type, int list)
876 {
877  int16_t(*mv_dst)[2] = &h->cur_pic.f.motion_val[list][b_xy];
878  int16_t(*mv_src)[2] = &h->mv_cache[list][scan8[0]];
879  AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0);
880  AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1);
881  AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2);
882  AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3);
883  if (CABAC) {
884  uint8_t (*mvd_dst)[2] = &h->mvd_table[list][FMO ? 8 * h->mb_xy
885  : h->mb2br_xy[h->mb_xy]];
886  uint8_t(*mvd_src)[2] = &h->mvd_cache[list][scan8[0]];
887  if (IS_SKIP(mb_type)) {
888  AV_ZERO128(mvd_dst);
889  } else {
890  AV_COPY64(mvd_dst, mvd_src + 8 * 3);
891  AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0);
892  AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1);
893  AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2);
894  }
895  }
896 
897  {
898  int8_t *ref_index = &h->cur_pic.f.ref_index[list][b8_xy];
899  int8_t *ref_cache = h->ref_cache[list];
900  ref_index[0 + 0 * 2] = ref_cache[scan8[0]];
901  ref_index[1 + 0 * 2] = ref_cache[scan8[4]];
902  ref_index[0 + 1 * 2] = ref_cache[scan8[8]];
903  ref_index[1 + 1 * 2] = ref_cache[scan8[12]];
904  }
905 }
906 
907 static av_always_inline void write_back_motion(H264Context *h, int mb_type)
908 {
909  const int b_stride = h->b_stride;
910  const int b_xy = 4 * h->mb_x + 4 * h->mb_y * h->b_stride; // try mb2b(8)_xy
911  const int b8_xy = 4 * h->mb_xy;
912 
913  if (USES_LIST(mb_type, 0)) {
914  write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 0);
915  } else {
916  fill_rectangle(&h->cur_pic.f.ref_index[0][b8_xy],
917  2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
918  }
919  if (USES_LIST(mb_type, 1))
920  write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 1);
921 
922  if (h->slice_type_nos == AV_PICTURE_TYPE_B && CABAC) {
923  if (IS_8X8(mb_type)) {
924  uint8_t *direct_table = &h->direct_table[4 * h->mb_xy];
925  direct_table[1] = h->sub_mb_type[1] >> 1;
926  direct_table[2] = h->sub_mb_type[2] >> 1;
927  direct_table[3] = h->sub_mb_type[3] >> 1;
928  }
929  }
930 }
931 
933 {
935  return !(AV_RN64A(h->sub_mb_type) &
937  0x0001000100010001ULL));
938  else
939  return !(AV_RN64A(h->sub_mb_type) &
941  0x0001000100010001ULL));
942 }
943 
944 void ff_h264_draw_horiz_band(H264Context *h, int y, int height);
945 
946 #endif /* AVCODEC_H264_H */
int chroma_format_idc
Definition: h264.h:148
Picture default_ref_list[2][32]
base reference list for all slices of a coded picture
Definition: h264.h:521
static av_always_inline uint16_t pack8to16(int a, int b)
Definition: h264.h:803
void ff_h264_direct_dist_scale_factor(H264Context *const h)
Definition: h264_direct.c:52
GetBitContext inter_gb
Definition: h264.h:412
int video_signal_type_present_flag
Definition: h264.h:171
static av_always_inline int get_dct8x8_allowed(H264Context *h)
Definition: h264.h:932
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:1857
Memory management control operation.
Definition: h264.h:243
int ff_h264_decode_seq_parameter_set(H264Context *h)
Decode SPS.
Definition: h264_ps.c:301
uint8_t * edge_emu_buffer
Definition: h264.h:620
int workaround_bugs
Definition: h264.h:285
unsigned int top_samples_available
Definition: h264.h:311
unsigned int topleft_samples_available
Definition: h264.h:310
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:259
5: top field, bottom field, top field repeated, in that order
Definition: h264.h:136
int sei_cpb_removal_delay
cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
Definition: h264.h:600
int low_delay
Definition: h264.h:281
int mb_num
Definition: h264.h:460
GetBitContext * intra_gb_ptr
Definition: h264.h:413
#define IS_SKIP(a)
Definition: mpegvideo.h:111
int mb_aff_frame
Definition: h264.h:373
int topleft_type
Definition: h264.h:299
int delta_poc[2]
Definition: h264.h:499
int last_qscale_diff
Definition: h264.h:433
#define LEFT_MBS
Definition: h264.h:64
int cbp
Definition: h264.h:428
3: top field, bottom field, in that order
Definition: h264.h:134
int first_field
Definition: h264.h:377
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:264
unregistered user data
Definition: h264.h:123
int weighted_bipred_idc
Definition: h264.h:213
int ff_h264_get_slice_type(const H264Context *h)
Reconstruct bitstream slice_type.
Definition: h264.c:3641
int chroma_qp_index_offset[2]
Definition: h264.h:216
int left_type[LEFT_MBS]
Definition: h264.h:302
uint8_t cabac_state[1024]
Definition: h264.h:424
uint16_t * cbp_table
Definition: h264.h:427
int scaling_matrix_present
Definition: h264.h:184
int luma_weight_flag[2]
7.4.3.2 luma_weight_lX_flag
Definition: h264.h:611
MMCO mmco[MAX_MMCO_COUNT]
memory management control operations buffer.
Definition: h264.h:531
uint8_t scaling_matrix4[6][16]
Definition: h264.h:185
int topleft_partition
Definition: h264.h:305
7: frame doubling
Definition: h264.h:138
#define MAX_PPS_COUNT
Definition: h264.h:41
Sequence parameter set.
Definition: h264.h:145
int initial_cpb_removal_delay[32]
Initial timestamps for CPBs.
Definition: h264.h:616
int mb_y
Definition: h264.h:454
int coded_picture_number
Definition: h264.h:280
int bitstream_restriction_flag
Definition: h264.h:182
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:211
int ff_h264_decode_extradata(H264Context *h)
Definition: h264.c:1246
#define FMO
Definition: h264.h:51
int outputed_poc
Definition: h264.h:525
int chroma_x_shift
Definition: h264.h:275
Picture parameter set.
Definition: h264.h:205
int flags
Definition: h264.h:284
const uint8_t * field_scan8x8_q0
Definition: h264.h:449
int frame_mbs_only_flag
Definition: h264.h:161
int mb_height
Definition: h264.h:458
int16_t * dc_val_base
Definition: h264.h:621
int is_avc
Used to parse AVC variant of h264.
Definition: h264.h:481
int mmco_index
Definition: h264.h:532
MMCOOpcode
Memory management control operation opcode.
Definition: h264.h:230
uint8_t zigzag_scan8x8_cavlc[64]
Definition: h264.h:441
DSPContext dsp
Definition: h264.h:254
mpegvideo header.
uint32_t dequant8_buffer[6][QP_MAX_NUM+1][64]
Definition: h264.h:362
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
Definition: h264.h:327
H264Context.
Definition: h264.h:252
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:224
static av_always_inline void write_back_motion(H264Context *h, int mb_type)
Definition: h264.h:907
uint32_t num_units_in_tick
Definition: h264.h:178
struct H264Context H264Context
H264Context.
4: bottom field, top field, in that order
Definition: h264.h:135
int picture_structure
Definition: h264.h:376
int slice_type_nos
S free slice type (SI/SP are remapped to I/P)
Definition: h264.h:369
#define AV_COPY32(d, s)
Definition: intreadwrite.h:506
av_cold 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:4620
int profile_idc
Definition: h264.h:146
unsigned current_sps_id
id of the current SPS
Definition: h264.h:353
MMCOOpcode opcode
Definition: h264.h:244
H.264 DSP functions.
static av_always_inline uint32_t pack16to32(int a, int b)
Definition: h264.h:794
int mb_skip_run
Definition: h264.h:457
void ff_h264_init_cabac_states(H264Context *h)
Definition: h264_cabac.c:1262
static av_always_inline int pred_intra_mode(H264Context *h, int n)
Get the predicted intra4x4 prediction mode.
Definition: h264.h:823
#define USES_LIST(a, list)
does this mb use listX, note does not work if subMBs
Definition: mpegvideo.h:127
uint8_t * chroma_pred_mode_table
Definition: h264.h:432
int ff_h264_decode_ref_pic_list_reordering(H264Context *h)
Definition: h264_refs.c:192
#define MAX_THREADS
Definition: mpegvideo.h:62
unsigned int crop_top
frame_cropping_rect_top_offset
Definition: h264.h:167
int resync_mb_y
Definition: h264.h:456
int fixed_frame_rate_flag
Definition: h264.h:180
uint8_t scaling_matrix4[6][16]
Definition: h264.h:221
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:408
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
Definition: h264.h:217
int short_pic_num
pic_num without wrapping (pic_num & max_pic_num)
Definition: h264.h:245
DCTELEM mb_luma_dc[3][16 *2]
Definition: h264.h:417
uint32_t(*[6] dequant4_coeff)[16]
Definition: h264.h:363
uint8_t
int prev_frame_num_offset
for POC type 2
Definition: h264.h:504
int use_weight
Definition: h264.h:382
int mb_uvlinesize
Definition: h264.h:348
int full_range
Definition: h264.h:172
unsigned int crop_left
frame_cropping_rect_left_offset
Definition: h264.h:165
int offset_for_non_ref_pic
Definition: h264.h:154
void ff_h264_reset_sei(H264Context *h)
Reset SEI values at the beginning of the frame.
Definition: h264_sei.c:40
int gaps_in_frame_num_allowed_flag
Definition: h264.h:158
Definition: h264.h:108
int data_partitioning
Definition: h264.h:279
int luma_weight[48][2][2]
Definition: h264.h:387
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
Definition: h264.h:196
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
Definition: h264.c:1062
enum AVColorPrimaries color_primaries
Definition: h264.h:174
struct MMCO MMCO
Memory management control operation.
av_cold void ff_h264_decode_init_vlc(void)
Definition: h264_cavlc.c:326
DCTELEM 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
#define b
Definition: input.c:52
Picture ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264.h:405
Motion estimation context.
Definition: mpegvideo.h:156
int cabac
entropy_coding_mode_flag
Definition: h264.h:207
int mb_xy
Definition: h264.h:461
Definition: h264.h:106
int picture_range_end
Definition: h264.h:266
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:402
unsigned int crop_right
frame_cropping_rect_right_offset
Definition: h264.h:166
SEI_PicStructType
pic_struct in picture timing SEI message
Definition: h264.h:130
Context for storing H.264 prediction functions.
Definition: h264pred.h:92
void ff_h264_fill_mbaff_ref_list(H264Context *h)
Definition: h264_refs.c:305
int uvlinesize
Definition: h264.h:274
int height
Definition: h264.h:273
int mb_x
Definition: h264.h:454
int transform_bypass
qpprime_y_zero_transform_bypass_flag
Definition: h264.h:149
int picture_count
Definition: h264.h:265
uint8_t chroma_qp_table[2][64]
pre-scaled (with chroma_qp_index_offset) version of qp_table
Definition: h264.h:223
int left_mb_xy[LEFT_MBS]
Definition: h264.h:297
int top_mb_xy
Definition: h264.h:295
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
Definition: h264.h:219
bitstream reader API header.
int chroma_y_shift
Definition: h264.h:275
#define MAX_DELAYED_PIC_COUNT
Definition: h264.h:45
int topright_type
Definition: h264.h:301
SEI_Type
SEI message types.
Definition: h264.h:120
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:76
#define AV_COPY64(d, s)
Definition: intreadwrite.h:510
int luma_log2_weight_denom
Definition: h264.h:384
uint8_t direct_cache[5 *8]
Definition: h264.h:437
static float t
int chroma_weight[48][2][2][2]
Definition: h264.h:388
int last_pocs[MAX_DELAYED_PIC_COUNT]
Definition: h264.h:523
int width
Definition: h264.h:273
struct PPS PPS
Picture parameter set.
#define MAX_SLICES
The maximum number of slices supported by the decoder.
Definition: h264.h:57
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:175
int mb_aff
mb_adaptive_frame_field_flag
Definition: h264.h:162
H264PredContext hpc
Definition: h264.h:309
const uint8_t * zigzag_scan_q0
Definition: h264.h:445
MotionEstContext me
Definition: h264.h:257
int poc_type
pic_order_cnt_type
Definition: h264.h:151
int context_initialized
Definition: h264.h:283
int top_cbp
Definition: h264.h:429
int constrained_intra_pred
constrained_intra_pred_flag
Definition: h264.h:218
ParseContext parse_context
Definition: h264.h:258
int nal_unit_type
Definition: h264.h:474
int use_weight_chroma
Definition: h264.h:383
int num_reorder_frames
Definition: h264.h:183
void ff_h264_direct_ref_list_init(H264Context *const h)
Definition: h264_direct.c:104
static av_always_inline int get_chroma_qp(H264Context *h, int t, int qscale)
Get the chroma qp.
Definition: h264.h:815
const uint8_t * left_block
Definition: h264.h:304
GetBitContext * inter_gb_ptr
Definition: h264.h:414
int time_offset_length
Definition: h264.h:190
Picture * delayed_pic[MAX_DELAYED_PIC_COUNT+2]
Definition: h264.h:522
int mb_field_decoding_flag
Definition: h264.h:374
int emu_edge_width
Definition: h264.h:350
PPS pps
current pps
Definition: h264.h:359
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:391
0: frame
Definition: h264.h:131
int weighted_pred
weighted_pred_flag
Definition: h264.h:212
ERContext er
Definition: h264.h:260
int ff_h264_decode_mb_cavlc(H264Context *h)
Decode a macroblock.
Definition: h264_cavlc.c:693
int residual_color_transform_flag
residual_colour_transform_flag
Definition: h264.h:197
uint8_t * list_counts
Array of list_count per MB specifying the slice type.
Definition: h264.h:404
int delta_pic_order_always_zero_flag
Definition: h264.h:153
int map_col_to_list0[2][16+32]
Definition: h264.h:396
int offset_for_top_to_bottom_field
Definition: h264.h:155
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:872
uint8_t zigzag_scan8x8[64]
Definition: h264.h:440
int col_parity
Definition: h264.h:392
static const uint8_t scan8[16 *3+3]
Definition: h264.h:778
const uint16_t ff_h264_mb_sizes[4]
Definition: h264.c:48
int chroma_pred_mode
Definition: h264.h:291
int crop
frame_cropping_flag
Definition: h264.h:164
uint8_t * direct_table
Definition: h264.h:436
uint8_t scaling_matrix8[6][64]
Definition: h264.h:222
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:623
unsigned int left_samples_available
Definition: h264.h:313
#define IS_8X8(a)
Definition: mpegvideo.h:119
int next_mb_skipped
Definition: h264.h:288
Context for storing H.264 DSP functions.
Definition: h264dsp.h:43
int ref_frame_count
num_ref_frames
Definition: h264.h:157
Picture * long_ref[32]
Definition: h264.h:520
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:192
int x264_build
Definition: h264.h:452
av_cold int ff_h264_decode_init(AVCodecContext *avctx)
Definition: h264.c:1300
uint32_t * mb2br_xy
Definition: h264.h:344
uint16_t * slice_table
slice_table_base + 2*mb_stride + 1
Definition: h264.h:367
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:156
int colour_description_present_flag
Definition: h264.h:173
AVRational sar
Definition: h264.h:170
int redundant_pic_count
Definition: h264.h:517
int long_ref_count
number of actual long term references
Definition: h264.h:535
Picture.
Definition: mpegvideo.h:95
int cabac_init_idc
Definition: h264.h:538
SPS sps
current sps
Definition: h264.h:354
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:401
#define MAX_SPS_COUNT
Definition: h264.h:40
int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length)
Decode PPS.
Definition: h264_ps.c:490
int dist_scale_factor[32]
Definition: h264.h:394
int emu_edge_height
Definition: h264.h:351
int init_qp
pic_init_qp_minus26 + 26
Definition: h264.h:214
int mmco_reset
Definition: h264.h:533
int direct_8x8_inference_flag
Definition: h264.h:163
int8_t intra4x4_pred_mode_cache[5 *8]
Definition: h264.h:307
uint8_t * bipred_scratchpad
Definition: h264.h:619
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:493
unsigned int topright_samples_available
Definition: h264.h:312
uint8_t scaling_matrix8[6][64]
Definition: h264.h:186
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:368
Definition: h264.h:103
int left_cbp
Definition: h264.h:430
int top_type
Definition: h264.h:300
static av_always_inline void write_back_non_zero_count(H264Context *h)
Definition: h264.h:849
uint32_t dequant4_buffer[6][QP_MAX_NUM+1][16]
Definition: h264.h:361
unsigned int list_count
Definition: h264.h:403
int topright_mb_xy
Definition: h264.h:296
GetBitContext intra_gb
Definition: h264.h:411
int dequant_coeff_pps
reinit tables when pps changes
Definition: h264.h:491
int pic_order_present
pic_order_present_flag
Definition: h264.h:208
DCTELEM 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
Picture cur_pic
Definition: h264.h:264
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:385
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:181
int chroma_format_idc
chroma format from sps to detect changes
Definition: h264.h:486
VideoDSPContext vdsp
Definition: h264.h:255
int timing_info_present_flag
Definition: h264.h:177
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:527
int mb_stride
Definition: h264.h:459
int vcl_hrd_parameters_present_flag
Definition: h264.h:188
AVCodecContext * avctx
Definition: h264.h:253
Definition: h264.h:107
int slice_alpha_c0_offset
Definition: h264.h:467
1: top field
Definition: h264.h:132
void ff_h264_remove_all_refs(H264Context *h)
Definition: h264_refs.c:434
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:294
int next_outputed_poc
Definition: h264.h:526
int ff_h264_decode_sei(H264Context *h)
Decode SEI.
Definition: h264_sei.c:159
int poc_msb
Definition: h264.h:497
int implicit_weight[48][48][2]
Definition: h264.h:389
int max_contexts
Max number of threads / contexts.
Definition: h264.h:557
main external API structure.
Definition: avcodec.h:1339
int dpb_output_delay_length
dpb_output_delay_length_minus1 + 1
Definition: h264.h:194
Definition: h264.h:231
int vui_parameters_present_flag
Definition: h264.h:169
2: bottom field
Definition: h264.h:133
#define QP_MAX_NUM
Definition: h264.h:96
AVColorTransferCharacteristic
Definition: avcodec.h:550
int resync_mb_x
Definition: h264.h:455
int16_t(*[2] motion_val)[2]
motion vector table
Definition: avcodec.h:1172
int prev_mb_skipped
Definition: h264.h:287
int constraint_set_flags
constraint_set[0-3]_flag
Definition: h264.h:198
SEI_PicStructType sei_pic_struct
pic_struct in picture timing SEI message
Definition: h264.h:575
Picture * short_ref[32]
Definition: h264.h:519
AVColorPrimaries
Definition: avcodec.h:539
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:364
int qp_thresh
QP threshold to skip loopfilter.
Definition: h264.h:271
rational number numerator/denominator
Definition: rational.h:43
#define MAX_MMCO_COUNT
Definition: h264.h:43
int pixel_shift
0 for 8-bit H264, 1 for high-bit-depth H264
Definition: h264.h:268
int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb, int first_slice)
Definition: h264_refs.c:685
int8_t * ref_index[2]
motion reference frame index the order in which these are stored can depend on the codec...
Definition: avcodec.h:1195
AVPictureType
Definition: avutil.h:244
struct SPS SPS
Sequence parameter set.
buffering period (H.264, D.1.1)
Definition: h264.h:121
unsigned int sps_id
Definition: h264.h:206
#define CABAC
Definition: h264.h:83
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
Definition: h264.h:152
6: bottom field, top field, bottom field repeated, in that order
Definition: h264.h:137
int sei_buffering_period_present
Buffering period SEI flag.
Definition: h264.h:615
short DCTELEM
Definition: dsputil.h:39
int block_offset[2 *(16 *3)]
block_offset[ 0..23] for frame macroblocks block_offset[24..47] for field macroblocks ...
Definition: h264.h:341
uint32_t time_scale
Definition: h264.h:179
int transform_8x8_mode
transform_8x8_mode_flag
Definition: h264.h:220
H.264 / AVC / MPEG4 prediction functions.
int pic_struct_present_flag
Definition: h264.h:189
Definition: h264.h:101
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:122
#define AV_ZERO128(d)
Definition: intreadwrite.h:542
int height
Definition: gxfenc.c:72
int is_complex
Definition: h264.h:463
int slice_context_count
Definition: h264.h:559
int mb_height
pic_height_in_map_units_minus1 + 1
Definition: h264.h:160
Picture * DPB
Definition: h264.h:262
uint8_t * rbsp_buffer[2]
Definition: h264.h:475
int init_qs
pic_init_qs_minus26 + 26
Definition: h264.h:215
int qscale
Definition: h264.h:277
int dist_scale_factor_field[2][32]
Definition: h264.h:395
#define tprintf(p,...)
Definition: get_bits.h:613
#define AV_COPY128(d, s)
Definition: intreadwrite.h:514
int nal_hrd_parameters_present_flag
Definition: h264.h:187
uint16_t * slice_table_base
Definition: h264.h:493
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
Definition: h264.h:150
Bi-dir predicted.
Definition: avutil.h:247
int cur_chroma_format_idc
Definition: h264.h:618
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:352
int long_arg
index, pic_num, or num long refs depending on opcode
Definition: h264.h:246
int sei_ct_type
Bit set of clock types for fields/frames in picture timing SEI message.
Definition: h264.h:590
int chroma_qp[2]
Definition: h264.h:269
uint16_t sub_mb_type[4]
Definition: h264.h:379
int bit_depth_luma
bit_depth_luma_minus8 + 8
Definition: h264.h:195
static av_always_inline void write_back_intra_pred_mode(H264Context *h)
Definition: h264.h:838
DSP utils.
int intra16x16_pred_mode
Definition: h264.h:292
int ff_h264_frame_start(H264Context *h)
Definition: h264.c:1588
int prev_poc_lsb
poc_lsb of the last reference pic for POC type 0
Definition: h264.h:502
int linesize
Definition: h264.h:274
Definition: h264.h:102
int col_fieldoff
Definition: h264.h:393
Picture * cur_pic_ptr
Definition: h264.h:263
Definition: h264.h:105
uint8_t non_zero_count_cache[15 *8]
non zero coeff count cache.
Definition: h264.h:320
uint8_t(*[2] top_borders)[(16 *3)*2]
Definition: h264.h:314
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
int mb_width
pic_width_in_mbs_minus1 + 1
Definition: h264.h:159
int slice_group_count
num_slice_groups_minus1 + 1
Definition: h264.h:209
uint32_t * mb2b_xy
Definition: h264.h:343
int cpb_cnt
See H.264 E.1.2.
Definition: h264.h:191
int slice_type_fixed
Definition: h264.h:370
struct AVFrame f
Definition: mpegvideo.h:96
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:110
H264DSPContext h264dsp
Definition: h264.h:256
int ff_h264_get_profile(SPS *sps)
compute profile from sps
Definition: h264.c:2733
uint8_t field_scan8x8[64]
Definition: h264.h:443
AVColorSpace
Definition: avcodec.h:559
int chroma_weight_flag[2]
7.4.3.2 chroma_weight_lX_flag
Definition: h264.h:612
int8_t * intra4x4_pred_mode
Definition: h264.h:308
#define DC_PRED
Definition: h264pred.h:40
int mb_linesize
may be equal to s->linesize or s->linesize * 2, for mbaff
Definition: h264.h:347
int cpb_removal_delay_length
cpb_removal_delay_length_minus1 + 1
Definition: h264.h:193
8: frame tripling
Definition: h264.h:139
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:397
#define LIST_NOT_USED
Definition: h264.h:329
uint8_t(* non_zero_count)[48]
Definition: h264.h:322
unsigned int crop_bottom
frame_cropping_rect_bottom_offset
Definition: h264.h:168
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:311
int slice_num
Definition: h264.h:366
int sei_recovery_frame_cnt
recovery_frame_cnt from SEI message
Definition: h264.h:609
int droppable
Definition: h264.h:278
int level_idc
Definition: h264.h:147
int nal_ref_idc
Definition: h264.h:473
uint8_t field_scan[16]
Definition: h264.h:442
void ff_h264_hl_decode_mb(H264Context *h)
Definition: h264.c:2292
void ff_h264_draw_horiz_band(H264Context *h, int y, int height)
Definition: h264.c:102
int picture_range_start
Definition: h264.h:266
int b_stride
Definition: h264.h:345
int sei_dpb_output_delay
dpb_output_delay in picture timing SEI message, see H.264 C.2.2
Definition: h264.h:595
unsigned int rbsp_buffer_size[2]
Definition: h264.h:476
recovery point (frame # to decoder sync)
Definition: h264.h:124
Context Adaptive Binary Arithmetic Coder.
DSPContext.
Definition: dsputil.h:194
int neighbor_transform_size
number of neighbors (top and/or left) that used 8x8 dct
Definition: h264.h:335
int8_t ref_cache[2][5 *8]
Definition: h264.h:328
int mb_mbaff
mb_aff_frame && mb_field_decoding_flag
Definition: h264.h:375
int short_ref_count
number of actual short term references
Definition: h264.h:536
int mb_slice_group_map_type
Definition: h264.h:210
enum AVColorSpace colorspace
Definition: h264.h:176