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 "mpegvideo.h"
35 #include "h264dsp.h"
36 #include "h264pred.h"
37 #include "rectangle.h"
38 
39 #define interlaced_dct interlaced_dct_is_a_bad_name
40 #define mb_intra mb_intra_is_not_initialized_see_mb_type
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->mb_mbaff
63 #define MB_FIELD h->mb_field_decoding_flag
64 #define FRAME_MBAFF h->mb_aff_frame
65 #define FIELD_PICTURE (s->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 0
72 #define MB_FIELD 0
73 #define FRAME_MBAFF 0
74 #define FIELD_PICTURE 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 (FRAME_MBAFF || FIELD_PICTURE)
83 
84 #ifndef CABAC
85 #define CABAC h->pps.cabac
86 #endif
87 
88 #define CHROMA422 (h->sps.chroma_format_idc == 2)
89 #define CHROMA444 (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 {
116  NAL_FF_IGNORE = 0xff0f001,
117 };
118 
122 typedef enum {
127 } SEI_Type;
128 
132 typedef enum {
143 
147 typedef struct SPS {
153  int poc_type;
161  int mb_width;
162  int mb_height;
164  int mb_aff;
166  int crop;
167  unsigned int crop_left;
168  unsigned int crop_right;
169  unsigned int crop_top;
170  unsigned int crop_bottom;
181  uint32_t time_scale;
183  short offset_for_ref_frame[256]; // FIXME dyn aloc?
193  int cpb_cnt;
201  int new;
202 } SPS;
203 
207 typedef struct PPS {
208  unsigned int sps_id;
209  int cabac;
213  unsigned int ref_count[2];
216  int init_qp;
217  int init_qs;
227 } PPS;
228 
232 typedef enum MMCOOpcode {
233  MMCO_END = 0,
240 } MMCOOpcode;
241 
245 typedef struct MMCO {
248  int long_arg;
249 } MMCO;
250 
254 typedef struct H264Context {
258  int chroma_qp[2]; // QPc
259 
260  int qp_thresh;
261 
264 
265  // prediction stuff
268 
273 
275  int top_type;
278 
281 
286  unsigned int top_samples_available;
289  uint8_t (*top_borders[2])[(16 * 3) * 2];
290 
296 
298 
302  DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2];
303  DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8];
304 #define LIST_NOT_USED -1 // FIXME rename?
305 #define PART_NOT_AVAILABLE -2
306 
311 
316  int block_offset[2 * (16 * 3)];
317 
318  uint32_t *mb2b_xy; // FIXME are these 4 a good idea?
319  uint32_t *mb2br_xy;
320  int b_stride; // FIXME use s->b4_stride
321 
324 
327 
328  unsigned current_sps_id;
330 
334  PPS pps; // FIXME move to Picture perhaps? (->no) do we need that?
335 
336  uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; // FIXME should these be moved down?
337  uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64];
338  uint32_t(*dequant4_coeff[6])[16];
339  uint32_t(*dequant8_coeff[6])[64];
340 
342  uint16_t *slice_table;
346 
347  // interlacing specific flags
350  int mb_mbaff;
351 
352  DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4];
353 
354  // Weighted pred stuff
359  // The following 2 can be changed to int8_t but that causes 10cpu cycles speedloss
360  int luma_weight[48][2][2];
361  int chroma_weight[48][2][2][2];
362  int implicit_weight[48][48][2];
363 
369  int map_col_to_list0[2][16 + 32];
370  int map_col_to_list0_field[2][2][16 + 32];
371 
375  unsigned int ref_count[2];
376  unsigned int list_count;
378  Picture ref_list[2][48];
381  int ref2frm[MAX_SLICES][2][64];
382 
383  // data partitioning
388 
389  DECLARE_ALIGNED(16, DCTELEM, mb)[16 * 48 * 2];
391  DCTELEM mb_padding[256 * 2];
392 
398 
399  /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0, 1, 2), 0x0? luma_cbp */
400  uint16_t *cbp_table;
401  int cbp;
402  int top_cbp;
403  int left_cbp;
404  /* chroma_pred_mode for i4x4 or i16x16, else 0 */
407  uint8_t (*mvd_table[2])[2];
408  DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5 * 8][2];
411 
424 
426 
427  int mb_xy;
428 
430 
431  // deblock
435 
436  // =============================================================
437  // Things below are not used in the MB or more inner code
438 
442  unsigned int rbsp_buffer_size[2];
443 
447  int is_avc;
449  int got_first;
450 
452 
455 
457 
458  uint16_t *slice_table_base;
459 
460  // POC stuff
461  int poc_lsb;
462  int poc_msb;
464  int delta_poc[2];
471 
476 
481 
483 
492 
499 
502 
504 
510 
515 
523 
529 
537 
545 
552 
557 
562 
571 
574 
575  // Timestamp stuff
578 
581 } H264Context;
582 
583 extern const uint8_t ff_h264_chroma_qp[3][QP_MAX_NUM + 1];
584 extern const uint16_t ff_h264_mb_sizes[4];
585 
590 
595 
600 
604 int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length);
605 
614 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src,
615  int *dst_length, int *consumed, int length);
616 
622 
626 int ff_h264_get_slice_type(const H264Context *h);
627 
633 
638 
642 
646 int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count);
647 
649  int first_slice);
650 
651 int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice);
652 
658 
663 int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma);
664 
670 
676 
682 
684 
687 void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type);
688 
689 void ff_h264_filter_mb_fast(H264Context *h, int mb_x, int mb_y,
690  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
691  unsigned int linesize, unsigned int uvlinesize);
692 void ff_h264_filter_mb(H264Context *h, int mb_x, int mb_y,
693  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
694  unsigned int linesize, unsigned int uvlinesize);
695 
702 
703 /*
704  * o-o o-o
705  * / / /
706  * o-o o-o
707  * ,---'
708  * o-o o-o
709  * / / /
710  * o-o o-o
711  */
712 
713 /* Scan8 organization:
714  * 0 1 2 3 4 5 6 7
715  * 0 DY y y y y y
716  * 1 y Y Y Y Y
717  * 2 y Y Y Y Y
718  * 3 y Y Y Y Y
719  * 4 y Y Y Y Y
720  * 5 DU u u u u u
721  * 6 u U U U U
722  * 7 u U U U U
723  * 8 u U U U U
724  * 9 u U U U U
725  * 10 DV v v v v v
726  * 11 v V V V V
727  * 12 v V V V V
728  * 13 v V V V V
729  * 14 v V V V V
730  * DY/DU/DV are for luma/chroma DC.
731  */
732 
733 #define LUMA_DC_BLOCK_INDEX 48
734 #define CHROMA_DC_BLOCK_INDEX 49
735 
736 // This table must be here because scan8[constant] must be known at compiletime
737 static const uint8_t scan8[16 * 3 + 3] = {
738  4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8,
739  6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8,
740  4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8,
741  6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8,
742  4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8,
743  6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8,
744  4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8,
745  6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8,
746  4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8,
747  6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8,
748  4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8,
749  6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8,
750  0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8
751 };
752 
753 static av_always_inline uint32_t pack16to32(int a, int b)
754 {
755 #if HAVE_BIGENDIAN
756  return (b & 0xFFFF) + (a << 16);
757 #else
758  return (a & 0xFFFF) + (b << 16);
759 #endif
760 }
761 
762 static av_always_inline uint16_t pack8to16(int a, int b)
763 {
764 #if HAVE_BIGENDIAN
765  return (b & 0xFF) + (a << 8);
766 #else
767  return (a & 0xFF) + (b << 8);
768 #endif
769 }
770 
774 static av_always_inline int get_chroma_qp(H264Context *h, int t, int qscale)
775 {
776  return h->pps.chroma_qp_table[t][qscale];
777 }
778 
783 {
784  const int index8 = scan8[n];
785  const int left = h->intra4x4_pred_mode_cache[index8 - 1];
786  const int top = h->intra4x4_pred_mode_cache[index8 - 8];
787  const int min = FFMIN(left, top);
788 
789  tprintf(h->s.avctx, "mode:%d %d min:%d\n", left, top, min);
790 
791  if (min < 0)
792  return DC_PRED;
793  else
794  return min;
795 }
796 
798 {
799  int8_t *i4x4 = h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
800  int8_t *i4x4_cache = h->intra4x4_pred_mode_cache;
801 
802  AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
803  i4x4[4] = i4x4_cache[7 + 8 * 3];
804  i4x4[5] = i4x4_cache[7 + 8 * 2];
805  i4x4[6] = i4x4_cache[7 + 8 * 1];
806 }
807 
809 {
810  const int mb_xy = h->mb_xy;
811  uint8_t *nnz = h->non_zero_count[mb_xy];
812  uint8_t *nnz_cache = h->non_zero_count_cache;
813 
814  AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]);
815  AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]);
816  AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]);
817  AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]);
818  AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]);
819  AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]);
820  AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]);
821  AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]);
822 
823  if (!h->s.chroma_y_shift) {
824  AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]);
825  AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]);
826  AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]);
827  AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]);
828  }
829 }
830 
832  MpegEncContext *const s,
833  int b_stride,
834  int b_xy, int b8_xy,
835  int mb_type, int list)
836 {
837  int16_t(*mv_dst)[2] = &s->current_picture.f.motion_val[list][b_xy];
838  int16_t(*mv_src)[2] = &h->mv_cache[list][scan8[0]];
839  AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0);
840  AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1);
841  AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2);
842  AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3);
843  if (CABAC) {
844  uint8_t (*mvd_dst)[2] = &h->mvd_table[list][FMO ? 8 * h->mb_xy
845  : h->mb2br_xy[h->mb_xy]];
846  uint8_t(*mvd_src)[2] = &h->mvd_cache[list][scan8[0]];
847  if (IS_SKIP(mb_type)) {
848  AV_ZERO128(mvd_dst);
849  } else {
850  AV_COPY64(mvd_dst, mvd_src + 8 * 3);
851  AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0);
852  AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1);
853  AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2);
854  }
855  }
856 
857  {
858  int8_t *ref_index = &s->current_picture.f.ref_index[list][b8_xy];
859  int8_t *ref_cache = h->ref_cache[list];
860  ref_index[0 + 0 * 2] = ref_cache[scan8[0]];
861  ref_index[1 + 0 * 2] = ref_cache[scan8[4]];
862  ref_index[0 + 1 * 2] = ref_cache[scan8[8]];
863  ref_index[1 + 1 * 2] = ref_cache[scan8[12]];
864  }
865 }
866 
867 static av_always_inline void write_back_motion(H264Context *h, int mb_type)
868 {
869  MpegEncContext *const s = &h->s;
870  const int b_stride = h->b_stride;
871  const int b_xy = 4 * s->mb_x + 4 * s->mb_y * h->b_stride; // try mb2b(8)_xy
872  const int b8_xy = 4 * h->mb_xy;
873 
874  if (USES_LIST(mb_type, 0)) {
875  write_back_motion_list(h, s, b_stride, b_xy, b8_xy, mb_type, 0);
876  } else {
878  2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
879  }
880  if (USES_LIST(mb_type, 1))
881  write_back_motion_list(h, s, b_stride, b_xy, b8_xy, mb_type, 1);
882 
883  if (h->slice_type_nos == AV_PICTURE_TYPE_B && CABAC) {
884  if (IS_8X8(mb_type)) {
885  uint8_t *direct_table = &h->direct_table[4 * h->mb_xy];
886  direct_table[1] = h->sub_mb_type[1] >> 1;
887  direct_table[2] = h->sub_mb_type[2] >> 1;
888  direct_table[3] = h->sub_mb_type[3] >> 1;
889  }
890  }
891 }
892 
894 {
896  return !(AV_RN64A(h->sub_mb_type) &
898  0x0001000100010001ULL));
899  else
900  return !(AV_RN64A(h->sub_mb_type) &
902  0x0001000100010001ULL));
903 }
904 
905 #endif /* AVCODEC_H264_H */
int chroma_format_idc
Definition: h264.h:150
Picture default_ref_list[2][32]
base reference list for all slices of a coded picture
Definition: h264.h:486
static av_always_inline uint16_t pack8to16(int a, int b)
Definition: h264.h:762
void ff_h264_direct_dist_scale_factor(H264Context *const h)
Definition: h264_direct.c:52
GetBitContext inter_gb
Definition: h264.h:385
int video_signal_type_present_flag
Definition: h264.h:173
static av_always_inline int get_dct8x8_allowed(H264Context *h)
Definition: h264.h:893
int last_slice_type
Definition: h264.h:530
int ff_h264_decode_mb_cabac(H264Context *h)
Decode a CABAC coded macroblock.
Definition: h264_cabac.c:1861
Memory management control operation.
Definition: h264.h:245
int ff_h264_decode_seq_parameter_set(H264Context *h)
Decode SPS.
Definition: h264_ps.c:305
unsigned int top_samples_available
Definition: h264.h:286
unsigned int topleft_samples_available
Definition: h264.h:285
int single_decode_warning
1 if the single thread fallback warning has already been displayed, 0 otherwise.
Definition: h264.h:528
5: top field, bottom field, top field repeated, in that order
Definition: h264.h:138
int sei_cpb_removal_delay
cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
Definition: h264.h:561
GetBitContext * intra_gb_ptr
Definition: h264.h:386
#define IS_SKIP(a)
Definition: mpegvideo.h:110
int mb_aff_frame
Definition: h264.h:348
int topleft_type
Definition: h264.h:274
int delta_poc[2]
Definition: h264.h:464
int last_qscale_diff
Definition: h264.h:406
#define LEFT_MBS
Definition: h264.h:66
int cbp
Definition: h264.h:401
3: top field, bottom field, in that order
Definition: h264.h:136
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:80
unregistered user data
Definition: h264.h:125
int weighted_bipred_idc
Definition: h264.h:215
int ff_h264_get_slice_type(const H264Context *h)
Reconstruct bitstream slice_type.
Definition: h264.c:3292
int chroma_qp_index_offset[2]
Definition: h264.h:218
int left_type[LEFT_MBS]
Definition: h264.h:277
uint8_t cabac_state[1024]
Definition: h264.h:397
uint16_t * cbp_table
Definition: h264.h:400
int scaling_matrix_present
Definition: h264.h:186
int luma_weight_flag[2]
7.4.3.2 luma_weight_lX_flag
Definition: h264.h:572
MMCO mmco[MAX_MMCO_COUNT]
memory management control operations buffer.
Definition: h264.h:496
uint8_t scaling_matrix4[6][16]
Definition: h264.h:187
int topleft_partition
Definition: h264.h:280
7: frame doubling
Definition: h264.h:140
#define MAX_PPS_COUNT
Definition: h264.h:43
Sequence parameter set.
Definition: h264.h:147
int initial_cpb_removal_delay[32]
Initial timestamps for CPBs.
Definition: h264.h:577
int bitstream_restriction_flag
Definition: h264.h:184
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:213
int ff_h264_decode_extradata(H264Context *h)
Definition: h264.c:989
#define FMO
Definition: h264.h:53
int outputed_poc
Definition: h264.h:490
Picture parameter set.
Definition: h264.h:207
const uint8_t * field_scan8x8_q0
Definition: h264.h:422
int frame_mbs_only_flag
Definition: h264.h:163
int is_avc
Used to parse AVC variant of h264.
Definition: h264.h:447
int mmco_index
Definition: h264.h:497
MMCOOpcode
Memory management control operation opcode.
Definition: h264.h:232
uint8_t zigzag_scan8x8_cavlc[64]
Definition: h264.h:414
mpegvideo header.
uint32_t dequant8_buffer[6][QP_MAX_NUM+1][64]
Definition: h264.h:337
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
Definition: h264.h:302
H264Context.
Definition: h264.h:254
int prev_poc_msb
poc_msb of the last reference pic for POC type 0
Definition: h264.h:466
int chroma_qp_diff
Definition: h264.h:226
static av_always_inline void write_back_motion(H264Context *h, int mb_type)
Definition: h264.h:867
uint32_t num_units_in_tick
Definition: h264.h:180
struct H264Context H264Context
H264Context.
4: bottom field, top field, in that order
Definition: h264.h:137
int slice_type_nos
S free slice type (SI/SP are remapped to I/P)
Definition: h264.h:344
#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:4256
int profile_idc
Definition: h264.h:148
unsigned current_sps_id
id of the current SPS
Definition: h264.h:328
MMCOOpcode opcode
Definition: h264.h:246
H.264 DSP functions.
static av_always_inline uint32_t pack16to32(int a, int b)
Definition: h264.h:753
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:782
#define USES_LIST(a, list)
does this mb use listX, note does not work if subMBs
Definition: mpegvideo.h:126
uint8_t * chroma_pred_mode_table
Definition: h264.h:405
int ff_h264_decode_ref_pic_list_reordering(H264Context *h)
Definition: h264_refs.c:187
#define MAX_THREADS
Definition: mpegvideo.h:61
unsigned int crop_top
frame_cropping_rect_top_offset
Definition: h264.h:169
int fixed_frame_rate_flag
Definition: h264.h:182
uint8_t scaling_matrix4[6][16]
Definition: h264.h:223
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:381
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
Definition: h264.h:219
int short_pic_num
pic_num without wrapping (pic_num & max_pic_num)
Definition: h264.h:247
DCTELEM mb_luma_dc[3][16 *2]
Definition: h264.h:390
uint32_t(*[6] dequant4_coeff)[16]
Definition: h264.h:338
uint8_t
int prev_frame_num_offset
for POC type 2
Definition: h264.h:469
int use_weight
Definition: h264.h:355
int mb_uvlinesize
Definition: h264.h:323
int full_range
Definition: h264.h:174
unsigned int crop_left
frame_cropping_rect_left_offset
Definition: h264.h:167
int offset_for_non_ref_pic
Definition: h264.h:156
int context_reinitialized
Definition: h264.h:451
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:160
Definition: h264.h:110
int luma_weight[48][2][2]
Definition: h264.h:360
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
Definition: h264.h:198
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
Definition: h264.c:865
enum AVColorPrimaries color_primaries
Definition: h264.h:176
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:389
#define b
Definition: input.c:52
Picture ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264.h:378
int cabac
entropy_coding_mode_flag
Definition: h264.h:209
int mb_xy
Definition: h264.h:427
Definition: h264.h:108
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:375
unsigned int crop_right
frame_cropping_rect_right_offset
Definition: h264.h:168
SEI_PicStructType
pic_struct in picture timing SEI message
Definition: h264.h:132
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:313
Context for storing H.264 prediction functions.
Definition: h264pred.h:92
void ff_h264_fill_mbaff_ref_list(H264Context *h)
Definition: h264_refs.c:301
int transform_bypass
qpprime_y_zero_transform_bypass_flag
Definition: h264.h:151
uint8_t chroma_qp_table[2][64]
pre-scaled (with chroma_qp_index_offset) version of qp_table
Definition: h264.h:225
int left_mb_xy[LEFT_MBS]
Definition: h264.h:272
int top_mb_xy
Definition: h264.h:270
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
Definition: h264.h:221
#define MAX_DELAYED_PIC_COUNT
Definition: h264.h:47
int topright_type
Definition: h264.h:276
SEI_Type
SEI message types.
Definition: h264.h:122
Picture * next_output_pic
Definition: h264.h:489
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:357
uint8_t direct_cache[5 *8]
Definition: h264.h:410
static float t
int chroma_weight[48][2][2][2]
Definition: h264.h:361
int last_pocs[MAX_DELAYED_PIC_COUNT]
Definition: h264.h:488
struct PPS PPS
Picture parameter set.
#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:420
int frame_num
Definition: h264.h:465
int got_first
this flag is != 0 if we've parsed a frame
Definition: h264.h:449
enum AVColorTransferCharacteristic color_trc
Definition: h264.h:177
int mb_aff
mb_adaptive_frame_field_flag
Definition: h264.h:164
H264PredContext hpc
Definition: h264.h:284
const uint8_t * zigzag_scan_q0
Definition: h264.h:418
int poc_type
pic_order_cnt_type
Definition: h264.h:153
int top_cbp
Definition: h264.h:402
int constrained_intra_pred
constrained_intra_pred_flag
Definition: h264.h:220
int chroma_y_shift
Definition: mpegvideo.h:657
int nal_unit_type
Definition: h264.h:440
int use_weight_chroma
Definition: h264.h:356
int num_reorder_frames
Definition: h264.h:185
void ff_h264_direct_ref_list_init(H264Context *const h)
Definition: h264_direct.c:106
static av_always_inline int get_chroma_qp(H264Context *h, int t, int qscale)
Get the chroma qp.
Definition: h264.h:774
const uint8_t * left_block
Definition: h264.h:279
GetBitContext * inter_gb_ptr
Definition: h264.h:387
int time_offset_length
Definition: h264.h:192
Picture * delayed_pic[MAX_DELAYED_PIC_COUNT+2]
Definition: h264.h:487
int mb_field_decoding_flag
Definition: h264.h:349
int emu_edge_width
Definition: h264.h:325
PPS pps
current pps
Definition: h264.h:334
uint8_t(*[2] mvd_table)[2]
Definition: h264.h:407
int prev_interlaced_frame
Complement sei_pic_struct SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced...
Definition: h264.h:544
int direct_spatial_mv_pred
Definition: h264.h:364
0: frame
Definition: h264.h:133
int weighted_pred
weighted_pred_flag
Definition: h264.h:214
int ff_h264_decode_mb_cavlc(H264Context *h)
Decode a macroblock.
Definition: h264_cavlc.c:695
int residual_color_transform_flag
residual_colour_transform_flag
Definition: h264.h:199
uint8_t * list_counts
Array of list_count per MB specifying the slice type.
Definition: h264.h:377
int delta_pic_order_always_zero_flag
Definition: h264.h:155
int map_col_to_list0[2][16+32]
Definition: h264.h:369
int offset_for_top_to_bottom_field
Definition: h264.h:157
uint8_t zigzag_scan8x8[64]
Definition: h264.h:413
int col_parity
Definition: h264.h:365
static const uint8_t scan8[16 *3+3]
Definition: h264.h:737
const uint16_t ff_h264_mb_sizes[4]
Definition: h264.c:48
int chroma_pred_mode
Definition: h264.h:266
int crop
frame_cropping_flag
Definition: h264.h:166
uint8_t * direct_table
Definition: h264.h:409
uint8_t scaling_matrix8[6][64]
Definition: h264.h:224
int nal_length_size
Number of bytes used for nal length (1, 2 or 4)
Definition: h264.h:448
useful rectangle filling function
CABACContext cabac
Cabac.
Definition: h264.h:396
static av_always_inline void write_back_motion_list(H264Context *h, MpegEncContext *const s, int b_stride, int b_xy, int b8_xy, int mb_type, int list)
Definition: h264.h:831
void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type)
Definition: h264_direct.c:628
unsigned int left_samples_available
Definition: h264.h:288
#define IS_8X8(a)
Definition: mpegvideo.h:118
int next_mb_skipped
Definition: h264.h:263
Context for storing H.264 DSP functions.
Definition: h264dsp.h:43
int ref_frame_count
num_ref_frames
Definition: h264.h:159
Picture * long_ref[32]
Definition: h264.h:485
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:468
#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:194
int x264_build
Definition: h264.h:425
av_cold int ff_h264_decode_init(AVCodecContext *avctx)
Definition: h264.c:1043
uint32_t * mb2br_xy
Definition: h264.h:319
uint16_t * slice_table
slice_table_base + 2*mb_stride + 1
Definition: h264.h:342
uint8_t field_scan8x8_cavlc[64]
Definition: h264.h:417
int poc_cycle_length
num_ref_frames_in_pic_order_cnt_cycle
Definition: h264.h:158
int colour_description_present_flag
Definition: h264.h:175
AVRational sar
Definition: h264.h:172
int redundant_pic_count
Definition: h264.h:482
int long_ref_count
number of actual long term references
Definition: h264.h:500
Picture.
Definition: mpegvideo.h:94
int cabac_init_idc
Definition: h264.h:503
SPS sps
current sps
Definition: h264.h:329
PPS * pps_buffers[MAX_PPS_COUNT]
Definition: h264.h:454
uint8_t mvd_cache[2][5 *8][2]
Definition: h264.h:408
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:42
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:367
int emu_edge_height
Definition: h264.h:326
int init_qp
pic_init_qp_minus26 + 26
Definition: h264.h:216
int mmco_reset
Definition: h264.h:498
int direct_8x8_inference_flag
Definition: h264.h:165
int8_t intra4x4_pred_mode_cache[5 *8]
Definition: h264.h:282
uint8_t * bipred_scratchpad
Definition: h264.h:580
int poc_lsb
Definition: h264.h:461
int max_pic_num
max_frame_num or 2 * max_frame_num for field pics.
Definition: h264.h:480
int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice)
Definition: h264_refs.c:491
unsigned int topright_samples_available
Definition: h264.h:287
uint8_t scaling_matrix8[6][64]
Definition: h264.h:188
const uint8_t * zigzag_scan8x8_q0
Definition: h264.h:419
int curr_pic_num
frame_num for frames or 2 * frame_num + 1 for field pics.
Definition: h264.h:475
int slice_type
Definition: h264.h:343
Definition: h264.h:105
int left_cbp
Definition: h264.h:403
int top_type
Definition: h264.h:275
static av_always_inline void write_back_non_zero_count(H264Context *h)
Definition: h264.h:808
uint32_t dequant4_buffer[6][QP_MAX_NUM+1][16]
Definition: h264.h:336
unsigned int list_count
Definition: h264.h:376
int topright_mb_xy
Definition: h264.h:271
GetBitContext intra_gb
Definition: h264.h:384
int dequant_coeff_pps
reinit tables when pps changes
Definition: h264.h:456
int pic_order_present
pic_order_present_flag
Definition: h264.h:210
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:391
SPS * sps_buffers[MAX_SPS_COUNT]
Definition: h264.h:453
struct H264Context * thread_context[MAX_THREADS]
Definition: h264.h:509
int chroma_log2_weight_denom
Definition: h264.h:358
short offset_for_ref_frame[256]
Definition: h264.h:183
int timing_info_present_flag
Definition: h264.h:179
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 vcl_hrd_parameters_present_flag
Definition: h264.h:190
MpegEncContext s
Definition: h264.h:255
Definition: h264.h:109
int slice_alpha_c0_offset
Definition: h264.h:433
1: top field
Definition: h264.h:134
void ff_h264_remove_all_refs(H264Context *h)
Definition: h264_refs.c:432
int prev_frame_num
frame_num of the last pic for POC type 1/2
Definition: h264.h:470
int topleft_mb_xy
Definition: h264.h:269
int next_outputed_poc
Definition: h264.h:491
int ff_h264_decode_sei(H264Context *h)
Decode SEI.
Definition: h264_sei.c:164
int poc_msb
Definition: h264.h:462
int implicit_weight[48][48][2]
Definition: h264.h:362
int max_contexts
Max number of threads / contexts.
Definition: h264.h:522
main external API structure.
Definition: avcodec.h:1339
int dpb_output_delay_length
dpb_output_delay_length_minus1 + 1
Definition: h264.h:196
Definition: h264.h:233
int vui_parameters_present_flag
Definition: h264.h:171
2: bottom field
Definition: h264.h:135
#define QP_MAX_NUM
Definition: h264.h:98
AVColorTransferCharacteristic
Definition: avcodec.h:550
int16_t(*[2] motion_val)[2]
motion vector table
Definition: avcodec.h:1172
int prev_mb_skipped
Definition: h264.h:262
int constraint_set_flags
constraint_set[0-3]_flag
Definition: h264.h:200
SEI_PicStructType sei_pic_struct
pic_struct in picture timing SEI message
Definition: h264.h:536
Picture * short_ref[32]
Definition: h264.h:484
AVColorPrimaries
Definition: avcodec.h:539
int slice_beta_offset
Definition: h264.h:434
const uint8_t * field_scan8x8_cavlc_q0
Definition: h264.h:423
uint32_t(*[6] dequant8_coeff)[64]
Definition: h264.h:339
int qp_thresh
QP threshold to skip loopfilter.
Definition: h264.h:260
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:257
int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb, int first_slice)
Definition: h264_refs.c:686
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
struct SPS SPS
Sequence parameter set.
buffering period (H.264, D.1.1)
Definition: h264.h:123
unsigned int sps_id
Definition: h264.h:208
#define CABAC
Definition: h264.h:85
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
Definition: h264.h:154
6: bottom field, top field, bottom field repeated, in that order
Definition: h264.h:139
int sei_buffering_period_present
Buffering period SEI flag.
Definition: h264.h:576
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:316
uint32_t time_scale
Definition: h264.h:181
int transform_8x8_mode
transform_8x8_mode_flag
Definition: h264.h:222
H.264 / AVC / MPEG4 prediction functions.
int pic_struct_present_flag
Definition: h264.h:191
Definition: h264.h:103
uint8_t zigzag_scan[16]
Definition: h264.h:412
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
#define AV_ZERO128(d)
Definition: intreadwrite.h:542
MpegEncContext.
Definition: mpegvideo.h:211
struct AVCodecContext * avctx
Definition: mpegvideo.h:213
int is_complex
Definition: h264.h:429
int mb_height
pic_height_in_map_units_minus1 + 1
Definition: h264.h:162
uint8_t * rbsp_buffer[2]
Definition: h264.h:441
int init_qs
pic_init_qs_minus26 + 26
Definition: h264.h:217
int dist_scale_factor_field[2][32]
Definition: h264.h:368
#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:189
uint16_t * slice_table_base
Definition: h264.h:458
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
Definition: h264.h:152
Bi-dir predicted.
Definition: avutil.h:247
int cur_chroma_format_idc
Definition: h264.h:579
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:170
int long_arg
index, pic_num, or num long refs depending on opcode
Definition: h264.h:248
int sei_ct_type
Bit set of clock types for fields/frames in picture timing SEI message.
Definition: h264.h:551
int chroma_qp[2]
Definition: h264.h:258
uint16_t sub_mb_type[4]
Definition: h264.h:352
int bit_depth_luma
bit_depth_luma_minus8 + 8
Definition: h264.h:197
static av_always_inline void write_back_intra_pred_mode(H264Context *h)
Definition: h264.h:797
DSP utils.
int intra16x16_pred_mode
Definition: h264.h:267
int ff_h264_frame_start(H264Context *h)
Definition: h264.c:1287
int prev_poc_lsb
poc_lsb of the last reference pic for POC type 0
Definition: h264.h:467
Definition: h264.h:104
int col_fieldoff
Definition: h264.h:366
Definition: h264.h:107
uint8_t non_zero_count_cache[15 *8]
non zero coeff count cache.
Definition: h264.h:295
uint8_t(*[2] top_borders)[(16 *3)*2]
Definition: h264.h:289
int current_slice
current slice number, used to initalize slice_num of each thread/context
Definition: h264.h:514
int mb_width
pic_width_in_mbs_minus1 + 1
Definition: h264.h:161
int slice_group_count
num_slice_groups_minus1 + 1
Definition: h264.h:211
uint32_t * mb2b_xy
Definition: h264.h:318
int cpb_cnt
See H.264 E.1.2.
Definition: h264.h:193
int slice_type_fixed
Definition: h264.h:345
struct AVFrame f
Definition: mpegvideo.h:95
int delta_poc_bottom
Definition: h264.h:463
const uint8_t * field_scan_q0
Definition: h264.h:421
int ff_h264_fill_default_ref_list(H264Context *h)
Fill the default_ref_list.
Definition: h264_refs.c:108
H264DSPContext h264dsp
Definition: h264.h:256
int ff_h264_get_profile(SPS *sps)
compute profile from sps
Definition: h264.c:2393
uint8_t field_scan8x8[64]
Definition: h264.h:416
AVColorSpace
Definition: avcodec.h:559
int chroma_weight_flag[2]
7.4.3.2 chroma_weight_lX_flag
Definition: h264.h:573
int8_t * intra4x4_pred_mode
Definition: h264.h:283
#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:322
int cpb_removal_delay_length
cpb_removal_delay_length_minus1 + 1
Definition: h264.h:195
8: frame tripling
Definition: h264.h:141
int deblocking_filter
disable_deblocking_filter_idc with 1 <-> 0
Definition: h264.h:432
#define AV_RN64A(p)
Definition: intreadwrite.h:450
int map_col_to_list0_field[2][2][16+32]
Definition: h264.h:370
#define LIST_NOT_USED
Definition: h264.h:304
uint8_t(* non_zero_count)[48]
Definition: h264.h:297
unsigned int crop_bottom
frame_cropping_rect_bottom_offset
Definition: h264.h:170
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:128
int slice_num
Definition: h264.h:341
int sei_recovery_frame_cnt
recovery_frame_cnt from SEI message
Definition: h264.h:570
int level_idc
Definition: h264.h:149
int nal_ref_idc
Definition: h264.h:439
uint8_t field_scan[16]
Definition: h264.h:415
void ff_h264_hl_decode_mb(H264Context *h)
Definition: h264.c:1978
int b_stride
Definition: h264.h:320
int sei_dpb_output_delay
dpb_output_delay in picture timing SEI message, see H.264 C.2.2
Definition: h264.h:556
unsigned int rbsp_buffer_size[2]
Definition: h264.h:442
recovery point (frame # to decoder sync)
Definition: h264.h:126
Context Adaptive Binary Arithmetic Coder.
int neighbor_transform_size
number of neighbors (top and/or left) that used 8x8 dct
Definition: h264.h:310
int8_t ref_cache[2][5 *8]
Definition: h264.h:303
int mb_mbaff
mb_aff_frame && mb_field_decoding_flag
Definition: h264.h:350
int short_ref_count
number of actual short term references
Definition: h264.h:501
int mb_slice_group_map_type
Definition: h264.h:212
enum AVColorSpace colorspace
Definition: h264.h:178