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 
102 #define DELAYED_PIC_REF 4
103 
104 #define QP_MAX_NUM (51 + 2*6) // The maximum supported qp
105 
106 /* NAL unit types */
107 enum {
122 };
123 
127 typedef enum {
132 } SEI_Type;
133 
137 typedef enum {
148 
152 typedef struct SPS{
153 
159  int poc_type;
167  int mb_width;
168  int mb_height;
170  int mb_aff;
172  int crop;
173  unsigned int crop_left;
174  unsigned int crop_right;
175  unsigned int crop_top;
176  unsigned int crop_bottom;
187  uint32_t time_scale;
189  short offset_for_ref_frame[256]; //FIXME dyn aloc?
193  uint8_t scaling_matrix4[6][16];
194  uint8_t scaling_matrix8[6][64];
199  int cpb_cnt;
207  int new;
208 }SPS;
209 
213 typedef struct PPS{
214  unsigned int sps_id;
215  int cabac;
219  unsigned int ref_count[2];
222  int init_qp;
223  int init_qs;
229  uint8_t scaling_matrix4[6][16];
230  uint8_t scaling_matrix8[6][64];
231  uint8_t chroma_qp_table[2][64];
233 }PPS;
234 
238 typedef enum MMCOOpcode{
246 } MMCOOpcode;
247 
251 typedef struct MMCO{
254  int long_arg;
255 } MMCO;
256 
260 typedef struct H264Context{
264  int chroma_qp[2]; //QPc
265 
266  int qp_thresh;
267 
270 
271  //prediction stuff
274 
279 
281  int top_type;
284 
285  const uint8_t * left_block;
287 
292  unsigned int top_samples_available;
295  uint8_t (*top_borders[2])[(16*3)*2];
296 
302 
303  uint8_t (*non_zero_count)[48];
304 
308  DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5*8][2];
309  DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5*8];
310 #define LIST_NOT_USED -1 //FIXME rename?
311 #define PART_NOT_AVAILABLE -2
312 
317 
322  int block_offset[2*(16*3)];
323 
324  uint32_t *mb2b_xy; //FIXME are these 4 a good idea?
325  uint32_t *mb2br_xy;
326  int b_stride; //FIXME use s->b4_stride
327 
330 
333 
334  unsigned current_sps_id;
336 
340  PPS pps; //FIXME move to Picture perhaps? (->no) do we need that?
341 
342  uint32_t dequant4_buffer[6][QP_MAX_NUM+1][16]; //FIXME should these be moved down?
343  uint32_t dequant8_buffer[6][QP_MAX_NUM+1][64];
344  uint32_t (*dequant4_coeff[6])[16];
345  uint32_t (*dequant8_coeff[6])[64];
346 
348  uint16_t *slice_table;
352 
353  //interlacing specific flags
356  int mb_mbaff;
357 
358  DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4];
359 
360  //Weighted pred stuff
365  //The following 2 can be changed to int8_t but that causes 10cpu cycles speedloss
366  int luma_weight[48][2][2];
367  int chroma_weight[48][2][2][2];
368  int implicit_weight[48][48][2];
369 
375  int map_col_to_list0[2][16+32];
376  int map_col_to_list0_field[2][2][16+32];
377 
381  unsigned int ref_count[2];
382  unsigned int list_count;
383  uint8_t *list_counts;
384  Picture ref_list[2][48];
387  int ref2frm[MAX_SLICES][2][64];
388 
389  //data partitioning
394 
395  DECLARE_ALIGNED(16, DCTELEM, mb)[16*48*2];
398 
403  uint8_t cabac_state[1024];
404 
405  /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0,1,2), 0x0? luma_cbp */
406  uint16_t *cbp_table;
407  int cbp;
408  int top_cbp;
409  int left_cbp;
410  /* chroma_pred_mode for i4x4 or i16x16, else 0 */
413  uint8_t (*mvd_table[2])[2];
414  DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5*8][2];
415  uint8_t *direct_table;
416  uint8_t direct_cache[5*8];
417 
418  uint8_t zigzag_scan[16];
419  uint8_t zigzag_scan8x8[64];
420  uint8_t zigzag_scan8x8_cavlc[64];
421  uint8_t field_scan[16];
422  uint8_t field_scan8x8[64];
423  uint8_t field_scan8x8_cavlc[64];
424  const uint8_t *zigzag_scan_q0;
425  const uint8_t *zigzag_scan8x8_q0;
426  const uint8_t *zigzag_scan8x8_cavlc_q0;
427  const uint8_t *field_scan_q0;
428  const uint8_t *field_scan8x8_q0;
429  const uint8_t *field_scan8x8_cavlc_q0;
430 
432 
433  int mb_xy;
434 
436 
437  //deblock
441 
442 //=============================================================
443  //Things below are not used in the MB or more inner code
444 
447  uint8_t *rbsp_buffer[2];
448  unsigned int rbsp_buffer_size[2];
449 
453  int is_avc;
455  int got_first;
456 
459 
461 
462  uint16_t *slice_table_base;
463 
464 
465  //POC stuff
466  int poc_lsb;
467  int poc_msb;
469  int delta_poc[2];
476 
481 
486 
488 
497 
504 
507 
509 
515 
520 
528 
534 
542 
550 
557 
562 
567 
576 
579 
580  // Timestamp stuff
583 
585 }H264Context;
586 
587 
588 extern const uint8_t ff_h264_chroma_qp[3][QP_MAX_NUM+1];
589 
594 
599 
604 
608 int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length);
609 
617 const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length);
618 
623 
627 int ff_h264_get_slice_type(const H264Context *h);
628 
634 
639 
643 
647 int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count);
648 
650 
652 
653 
658 
662 int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma);
663 
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, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize);
690 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);
691 
698 
699 
700 /*
701 o-o o-o
702  / / /
703 o-o o-o
704  ,---'
705 o-o o-o
706  / / /
707 o-o o-o
708 */
709 
710 /* Scan8 organization:
711  * 0 1 2 3 4 5 6 7
712  * 0 DY y y y y y
713  * 1 y Y Y Y Y
714  * 2 y Y Y Y Y
715  * 3 y Y Y Y Y
716  * 4 y Y Y Y Y
717  * 5 DU u u u u u
718  * 6 u U U U U
719  * 7 u U U U U
720  * 8 u U U U U
721  * 9 u U U U U
722  * 10 DV v v v v v
723  * 11 v V V V V
724  * 12 v V V V V
725  * 13 v V V V V
726  * 14 v V V V V
727  * DY/DU/DV are for luma/chroma DC.
728  */
729 
730 #define LUMA_DC_BLOCK_INDEX 48
731 #define CHROMA_DC_BLOCK_INDEX 49
732 
733 //This table must be here because scan8[constant] must be known at compiletime
734 static const uint8_t scan8[16*3 + 3]={
735  4+ 1*8, 5+ 1*8, 4+ 2*8, 5+ 2*8,
736  6+ 1*8, 7+ 1*8, 6+ 2*8, 7+ 2*8,
737  4+ 3*8, 5+ 3*8, 4+ 4*8, 5+ 4*8,
738  6+ 3*8, 7+ 3*8, 6+ 4*8, 7+ 4*8,
739  4+ 6*8, 5+ 6*8, 4+ 7*8, 5+ 7*8,
740  6+ 6*8, 7+ 6*8, 6+ 7*8, 7+ 7*8,
741  4+ 8*8, 5+ 8*8, 4+ 9*8, 5+ 9*8,
742  6+ 8*8, 7+ 8*8, 6+ 9*8, 7+ 9*8,
743  4+11*8, 5+11*8, 4+12*8, 5+12*8,
744  6+11*8, 7+11*8, 6+12*8, 7+12*8,
745  4+13*8, 5+13*8, 4+14*8, 5+14*8,
746  6+13*8, 7+13*8, 6+14*8, 7+14*8,
747  0+ 0*8, 0+ 5*8, 0+10*8
748 };
749 
750 static av_always_inline uint32_t pack16to32(int a, int b){
751 #if HAVE_BIGENDIAN
752  return (b&0xFFFF) + (a<<16);
753 #else
754  return (a&0xFFFF) + (b<<16);
755 #endif
756 }
757 
758 static av_always_inline uint16_t pack8to16(int a, int b){
759 #if HAVE_BIGENDIAN
760  return (b&0xFF) + (a<<8);
761 #else
762  return (a&0xFF) + (b<<8);
763 #endif
764 }
765 
769 static av_always_inline int get_chroma_qp(H264Context *h, int t, int qscale){
770  return h->pps.chroma_qp_table[t][qscale];
771 }
772 
777  const int index8= scan8[n];
778  const int left= h->intra4x4_pred_mode_cache[index8 - 1];
779  const int top = h->intra4x4_pred_mode_cache[index8 - 8];
780  const int min= FFMIN(left, top);
781 
782  tprintf(h->s.avctx, "mode:%d %d min:%d\n", left ,top, min);
783 
784  if(min<0) return DC_PRED;
785  else return min;
786 }
787 
789  int8_t *i4x4= h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
790  int8_t *i4x4_cache= h->intra4x4_pred_mode_cache;
791 
792  AV_COPY32(i4x4, i4x4_cache + 4 + 8*4);
793  i4x4[4]= i4x4_cache[7+8*3];
794  i4x4[5]= i4x4_cache[7+8*2];
795  i4x4[6]= i4x4_cache[7+8*1];
796 }
797 
799  const int mb_xy= h->mb_xy;
800  uint8_t *nnz = h->non_zero_count[mb_xy];
801  uint8_t *nnz_cache = h->non_zero_count_cache;
802 
803  AV_COPY32(&nnz[ 0], &nnz_cache[4+8* 1]);
804  AV_COPY32(&nnz[ 4], &nnz_cache[4+8* 2]);
805  AV_COPY32(&nnz[ 8], &nnz_cache[4+8* 3]);
806  AV_COPY32(&nnz[12], &nnz_cache[4+8* 4]);
807  AV_COPY32(&nnz[16], &nnz_cache[4+8* 6]);
808  AV_COPY32(&nnz[20], &nnz_cache[4+8* 7]);
809  AV_COPY32(&nnz[32], &nnz_cache[4+8*11]);
810  AV_COPY32(&nnz[36], &nnz_cache[4+8*12]);
811 
812  if(!h->s.chroma_y_shift){
813  AV_COPY32(&nnz[24], &nnz_cache[4+8* 8]);
814  AV_COPY32(&nnz[28], &nnz_cache[4+8* 9]);
815  AV_COPY32(&nnz[40], &nnz_cache[4+8*13]);
816  AV_COPY32(&nnz[44], &nnz_cache[4+8*14]);
817  }
818 }
819 
821  int b_xy, int b8_xy, int mb_type, int list )
822 {
823  int16_t (*mv_dst)[2] = &s->current_picture.f.motion_val[list][b_xy];
824  int16_t (*mv_src)[2] = &h->mv_cache[list][scan8[0]];
825  AV_COPY128(mv_dst + 0*b_stride, mv_src + 8*0);
826  AV_COPY128(mv_dst + 1*b_stride, mv_src + 8*1);
827  AV_COPY128(mv_dst + 2*b_stride, mv_src + 8*2);
828  AV_COPY128(mv_dst + 3*b_stride, mv_src + 8*3);
829  if( CABAC ) {
830  uint8_t (*mvd_dst)[2] = &h->mvd_table[list][FMO ? 8*h->mb_xy : h->mb2br_xy[h->mb_xy]];
831  uint8_t (*mvd_src)[2] = &h->mvd_cache[list][scan8[0]];
832  if(IS_SKIP(mb_type))
833  AV_ZERO128(mvd_dst);
834  else{
835  AV_COPY64(mvd_dst, mvd_src + 8*3);
836  AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8*0);
837  AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8*1);
838  AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8*2);
839  }
840  }
841 
842  {
843  int8_t *ref_index = &s->current_picture.f.ref_index[list][b8_xy];
844  int8_t *ref_cache = h->ref_cache[list];
845  ref_index[0+0*2]= ref_cache[scan8[0]];
846  ref_index[1+0*2]= ref_cache[scan8[4]];
847  ref_index[0+1*2]= ref_cache[scan8[8]];
848  ref_index[1+1*2]= ref_cache[scan8[12]];
849  }
850 }
851 
852 static av_always_inline void write_back_motion(H264Context *h, int mb_type){
853  MpegEncContext * const s = &h->s;
854  const int b_stride = h->b_stride;
855  const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride; //try mb2b(8)_xy
856  const int b8_xy= 4*h->mb_xy;
857 
858  if(USES_LIST(mb_type, 0)){
859  write_back_motion_list(h, s, b_stride, b_xy, b8_xy, mb_type, 0);
860  }else{
862  2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
863  }
864  if(USES_LIST(mb_type, 1)){
865  write_back_motion_list(h, s, b_stride, b_xy, b8_xy, mb_type, 1);
866  }
867 
869  if(IS_8X8(mb_type)){
870  uint8_t *direct_table = &h->direct_table[4*h->mb_xy];
871  direct_table[1] = h->sub_mb_type[1]>>1;
872  direct_table[2] = h->sub_mb_type[2]>>1;
873  direct_table[3] = h->sub_mb_type[3]>>1;
874  }
875  }
876 }
877 
880  return !(AV_RN64A(h->sub_mb_type) & ((MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8 )*0x0001000100010001ULL));
881  else
882  return !(AV_RN64A(h->sub_mb_type) & ((MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8|MB_TYPE_DIRECT2)*0x0001000100010001ULL));
883 }
884 
885 #endif /* AVCODEC_H264_H */
int chroma_format_idc
Definition: h264.h:156
Picture default_ref_list[2][32]
base reference list for all slices of a coded picture
Definition: h264.h:491
#define MB_TYPE_8x16
Definition: avcodec.h:812
static av_always_inline uint16_t pack8to16(int a, int b)
Definition: h264.h:758
void ff_h264_direct_dist_scale_factor(H264Context *const h)
Definition: h264_direct.c:52
GetBitContext inter_gb
Definition: h264.h:391
int video_signal_type_present_flag
Definition: h264.h:179
int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb)
Definition: h264_refs.c:665
static av_always_inline int get_dct8x8_allowed(H264Context *h)
Definition: h264.h:878
int last_slice_type
Definition: h264.h:535
int ff_h264_decode_mb_cabac(H264Context *h)
Decode a CABAC coded macroblock.
Definition: h264_cabac.c:1870
Memory management control operation.
Definition: h264.h:251
int ff_h264_decode_seq_parameter_set(H264Context *h)
Decode SPS.
Definition: h264_ps.c:305
unsigned int top_samples_available
Definition: h264.h:292
unsigned int topleft_samples_available
Definition: h264.h:291
int single_decode_warning
1 if the single thread fallback warning has already been displayed, 0 otherwise.
Definition: h264.h:533
5: top field, bottom field, top field repeated, in that order
Definition: h264.h:143
int sei_cpb_removal_delay
cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
Definition: h264.h:566
GetBitContext * intra_gb_ptr
Definition: h264.h:392
#define IS_SKIP(a)
Definition: mpegvideo.h:101
int mb_aff_frame
Definition: h264.h:354
int topleft_type
Definition: h264.h:280
int delta_poc[2]
Definition: h264.h:469
AVColorPrimaries
Definition: avcodec.h:533
int last_qscale_diff
Definition: h264.h:412
#define LEFT_MBS
Definition: h264.h:66
int cbp
Definition: h264.h:407
3: top field, bottom field, in that order
Definition: h264.h:141
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:68
unregistered user data
Definition: h264.h:130
int weighted_bipred_idc
Definition: h264.h:221
int ff_h264_get_slice_type(const H264Context *h)
Reconstruct bitstream slice_type.
Definition: h264.c:3406
int chroma_qp_index_offset[2]
Definition: h264.h:224
int left_type[LEFT_MBS]
Definition: h264.h:283
uint8_t cabac_state[1024]
Definition: h264.h:403
uint16_t * cbp_table
Definition: h264.h:406
int scaling_matrix_present
Definition: h264.h:192
int luma_weight_flag[2]
7.4.3.2 luma_weight_lX_flag
Definition: h264.h:577
MMCO mmco[MAX_MMCO_COUNT]
memory management control operations buffer.
Definition: h264.h:501
uint8_t scaling_matrix4[6][16]
Definition: h264.h:193
int topleft_partition
Definition: h264.h:286
7: frame doubling
Definition: h264.h:145
#define MAX_PPS_COUNT
Definition: h264.h:43
Sequence parameter set.
Definition: h264.h:152
int initial_cpb_removal_delay[32]
Initial timestamps for CPBs.
Definition: h264.h:582
int bitstream_restriction_flag
Definition: h264.h:190
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:219
int ff_h264_decode_extradata(H264Context *h)
Definition: h264.c:1046
#define FMO
Definition: h264.h:53
int outputed_poc
Definition: h264.h:495
Picture parameter set.
Definition: h264.h:213
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:55
const uint8_t * field_scan8x8_q0
Definition: h264.h:428
void ff_generate_sliding_window_mmcos(H264Context *h)
Definition: h264_refs.c:487
int frame_mbs_only_flag
Definition: h264.h:169
int is_avc
Used to parse AVC variant of h264.
Definition: h264.h:453
int mmco_index
Definition: h264.h:502
MMCOOpcode
Memory management control operation opcode.
Definition: h264.h:238
uint8_t zigzag_scan8x8_cavlc[64]
Definition: h264.h:420
#define b
Definition: swscale.c:1335
mpegvideo header.
uint32_t dequant8_buffer[6][QP_MAX_NUM+1][64]
Definition: h264.h:343
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
Definition: h264.h:308
H264Context.
Definition: h264.h:260
int prev_poc_msb
poc_msb of the last reference pic for POC type 0
Definition: h264.h:471
int chroma_qp_diff
Definition: h264.h:232
static av_always_inline void write_back_motion(H264Context *h, int mb_type)
Definition: h264.h:852
uint32_t num_units_in_tick
Definition: h264.h:186
4: bottom field, top field, in that order
Definition: h264.h:142
Definition: h264.h:116
int slice_type_nos
S free slice type (SI/SP are remapped to I/P)
Definition: h264.h:350
#define AV_COPY32(d, s)
Definition: intreadwrite.h:479
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:4367
int profile_idc
Definition: h264.h:154
unsigned current_sps_id
id of the current SPS
Definition: h264.h:334
MMCOOpcode opcode
Definition: h264.h:252
H.264 DSP functions.
static av_always_inline uint32_t pack16to32(int a, int b)
Definition: h264.h:750
#define MB_TYPE_DIRECT2
Definition: avcodec.h:815
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:776
#define USES_LIST(a, list)
does this mb use listX, note does not work if subMBs
Definition: mpegvideo.h:117
uint8_t * chroma_pred_mode_table
Definition: h264.h:411
AVColorSpace
Definition: avcodec.h:552
int ff_h264_decode_ref_pic_list_reordering(H264Context *h)
Definition: h264_refs.c:195
#define MAX_THREADS
Definition: mpegvideo.h:58
unsigned int crop_top
frame_cropping_rect_top_offset
Definition: h264.h:175
int fixed_frame_rate_flag
Definition: h264.h:188
uint8_t scaling_matrix4[6][16]
Definition: h264.h:229
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:387
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
Definition: h264.h:225
int short_pic_num
pic_num without wrapping (pic_num & max_pic_num)
Definition: h264.h:253
DCTELEM mb_luma_dc[3][16 *2]
Definition: h264.h:396
uint32_t(*[6] dequant4_coeff)[16]
Definition: h264.h:344
#define MB_TYPE_8x8
Definition: avcodec.h:813
#define av_cold
Definition: attributes.h:71
int prev_frame_num_offset
for POC type 2
Definition: h264.h:474
int use_weight
Definition: h264.h:361
int mb_uvlinesize
Definition: h264.h:329
int full_range
Definition: h264.h:180
unsigned int crop_left
frame_cropping_rect_left_offset
Definition: h264.h:173
int offset_for_non_ref_pic
Definition: h264.h:162
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:166
int luma_weight[48][2][2]
Definition: h264.h:366
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
Definition: h264.h:204
struct H264Context H264Context
H264Context.
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
Definition: h264.c:944
enum AVColorPrimaries color_primaries
Definition: h264.h:182
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:395
Picture ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264.h:384
int cabac
entropy_coding_mode_flag
Definition: h264.h:215
int mb_xy
Definition: h264.h:433
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:381
unsigned int crop_right
frame_cropping_rect_right_offset
Definition: h264.h:174
SEI_PicStructType
pic_struct in picture timing SEI message
Definition: h264.h:137
Picture current_picture
copy of the current picture structure.
Definition: mpegvideo.h:295
Context for storing H.264 prediction functions.
Definition: h264pred.h:92
void ff_h264_fill_mbaff_ref_list(H264Context *h)
Definition: h264_refs.c:309
int transform_bypass
qpprime_y_zero_transform_bypass_flag
Definition: h264.h:157
uint8_t chroma_qp_table[2][64]
pre-scaled (with chroma_qp_index_offset) version of qp_table
Definition: h264.h:231
int left_mb_xy[LEFT_MBS]
Definition: h264.h:278
int top_mb_xy
Definition: h264.h:276
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
Definition: h264.h:227
#define MAX_DELAYED_PIC_COUNT
Definition: h264.h:47
int topright_type
Definition: h264.h:282
SEI_Type
SEI message types.
Definition: h264.h:127
Picture * next_output_pic
Definition: h264.h:494
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:483
int luma_log2_weight_denom
Definition: h264.h:363
uint8_t direct_cache[5 *8]
Definition: h264.h:416
static float t
int chroma_weight[48][2][2][2]
Definition: h264.h:367
int last_pocs[MAX_DELAYED_PIC_COUNT]
Definition: h264.h:493
#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:426
int frame_num
Definition: h264.h:470
int got_first
this flag is != 0 if we've parsed a frame
Definition: h264.h:455
enum AVColorTransferCharacteristic color_trc
Definition: h264.h:183
int mb_aff
mb_adaptive_frame_field_flag
Definition: h264.h:170
H264PredContext hpc
Definition: h264.h:290
const uint8_t * zigzag_scan_q0
Definition: h264.h:424
int poc_type
pic_order_cnt_type
Definition: h264.h:159
Definition: h264.h:114
int top_cbp
Definition: h264.h:408
int constrained_intra_pred
constrained_intra_pred_flag
Definition: h264.h:226
int chroma_y_shift
Definition: mpegvideo.h:634
int nal_unit_type
Definition: h264.h:446
int use_weight_chroma
Definition: h264.h:362
int num_reorder_frames
Definition: h264.h:191
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:769
const uint8_t * left_block
Definition: h264.h:285
GetBitContext * inter_gb_ptr
Definition: h264.h:393
Definition: h264.h:109
int time_offset_length
Definition: h264.h:198
Picture * delayed_pic[MAX_DELAYED_PIC_COUNT+2]
Definition: h264.h:492
int mb_field_decoding_flag
Definition: h264.h:355
int emu_edge_width
Definition: h264.h:331
PPS pps
current pps
Definition: h264.h:340
uint8_t(*[2] mvd_table)[2]
Definition: h264.h:413
int prev_interlaced_frame
Complement sei_pic_struct SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced...
Definition: h264.h:549
int direct_spatial_mv_pred
Definition: h264.h:370
0: frame
Definition: h264.h:138
int weighted_pred
weighted_pred_flag
Definition: h264.h:220
int ff_h264_decode_mb_cavlc(H264Context *h)
Decode a macroblock.
Definition: h264_cavlc.c:694
int residual_color_transform_flag
residual_colour_transform_flag
Definition: h264.h:205
uint8_t * list_counts
Array of list_count per MB specifying the slice type.
Definition: h264.h:383
int delta_pic_order_always_zero_flag
Definition: h264.h:161
int map_col_to_list0[2][16+32]
Definition: h264.h:375
int offset_for_top_to_bottom_field
Definition: h264.h:163
uint8_t zigzag_scan8x8[64]
Definition: h264.h:419
int col_parity
Definition: h264.h:371
static const uint8_t scan8[16 *3+3]
Definition: h264.h:734
int chroma_pred_mode
Definition: h264.h:272
int crop
frame_cropping_flag
Definition: h264.h:172
uint8_t * direct_table
Definition: h264.h:415
uint8_t scaling_matrix8[6][64]
Definition: h264.h:230
int nal_length_size
Number of bytes used for nal length (1, 2 or 4)
Definition: h264.h:454
useful rectangle filling function
CABACContext cabac
Cabac.
Definition: h264.h:402
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:820
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:294
#define IS_8X8(a)
Definition: mpegvideo.h:109
int next_mb_skipped
Definition: h264.h:269
struct SPS SPS
Sequence parameter set.
Context for storing H.264 DSP functions.
Definition: h264dsp.h:42
int ref_frame_count
num_ref_frames
Definition: h264.h:165
Picture * long_ref[32]
Definition: h264.h:490
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:473
#define AV_COPY16(d, s)
Definition: intreadwrite.h:475
int initial_cpb_removal_delay_length
initial_cpb_removal_delay_length_minus1 +1
Definition: h264.h:200
int x264_build
Definition: h264.h:431
av_cold int ff_h264_decode_init(AVCodecContext *avctx)
Definition: h264.c:1098
uint32_t * mb2br_xy
Definition: h264.h:325
#define FFMIN(a, b)
Definition: common.h:55
uint16_t * slice_table
slice_table_base + 2*mb_stride + 1
Definition: h264.h:348
uint8_t field_scan8x8_cavlc[64]
Definition: h264.h:423
int poc_cycle_length
num_ref_frames_in_pic_order_cnt_cycle
Definition: h264.h:164
int colour_description_present_flag
Definition: h264.h:181
#define MB_TYPE_16x8
Definition: avcodec.h:811
AVRational sar
Definition: h264.h:178
int redundant_pic_count
Definition: h264.h:487
int long_ref_count
number of actual long term references
Definition: h264.h:505
Picture.
Definition: mpegvideo.h:85
int cabac_init_idc
Definition: h264.h:508
SPS sps
current sps
Definition: h264.h:335
PPS * pps_buffers[MAX_PPS_COUNT]
Definition: h264.h:458
uint8_t mvd_cache[2][5 *8][2]
Definition: h264.h:414
static void fill_rectangle(SDL_Surface *screen, int x, int y, int w, int h, int color)
Definition: avplay.c:399
#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:494
int emu_edge_height
Definition: h264.h:332
int init_qp
pic_init_qp_minus26 + 26
Definition: h264.h:222
int mmco_reset
Definition: h264.h:503
int direct_8x8_inference_flag
Definition: h264.h:171
int8_t intra4x4_pred_mode_cache[5 *8]
Definition: h264.h:288
av_cold int ff_h264_decode_end(AVCodecContext *avctx)
Definition: h264.c:4380
int poc_lsb
Definition: h264.h:466
int max_pic_num
max_frame_num or 2*max_frame_num for field pics.
Definition: h264.h:485
unsigned int topright_samples_available
Definition: h264.h:293
uint8_t scaling_matrix8[6][64]
Definition: h264.h:194
const uint8_t * zigzag_scan8x8_q0
Definition: h264.h:425
int curr_pic_num
frame_num for frames or 2*frame_num+1 for field pics.
Definition: h264.h:480
int slice_type
Definition: h264.h:349
int left_cbp
Definition: h264.h:409
int top_type
Definition: h264.h:281
Definition: h264.h:111
static av_always_inline void write_back_non_zero_count(H264Context *h)
Definition: h264.h:798
uint32_t dequant4_buffer[6][QP_MAX_NUM+1][16]
Definition: h264.h:342
unsigned int list_count
Definition: h264.h:382
int topright_mb_xy
Definition: h264.h:277
Definition: h264.h:115
GetBitContext intra_gb
Definition: h264.h:390
int dequant_coeff_pps
reinit tables when pps changes
Definition: h264.h:460
int pic_order_present
pic_order_present_flag
Definition: h264.h:216
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:397
SPS * sps_buffers[MAX_SPS_COUNT]
Definition: h264.h:457
struct H264Context * thread_context[MAX_THREADS]
Definition: h264.h:514
int chroma_log2_weight_denom
Definition: h264.h:364
short offset_for_ref_frame[256]
Definition: h264.h:189
int timing_info_present_flag
Definition: h264.h:185
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:506
int vcl_hrd_parameters_present_flag
Definition: h264.h:196
MpegEncContext s
Definition: h264.h:261
int slice_alpha_c0_offset
Definition: h264.h:439
1: top field
Definition: h264.h:139
void ff_h264_remove_all_refs(H264Context *h)
Definition: h264_refs.c:440
int prev_frame_num
frame_num of the last pic for POC type 1/2
Definition: h264.h:475
int topleft_mb_xy
Definition: h264.h:275
int next_outputed_poc
Definition: h264.h:496
int ff_h264_decode_sei(H264Context *h)
Decode SEI.
Definition: h264_sei.c:164
int poc_msb
Definition: h264.h:467
int implicit_weight[48][48][2]
Definition: h264.h:368
int max_contexts
Max number of threads / contexts.
Definition: h264.h:527
main external API structure.
Definition: avcodec.h:1329
int dpb_output_delay_length
dpb_output_delay_length_minus1 + 1
Definition: h264.h:202
Definition: h264.h:239
int vui_parameters_present_flag
Definition: h264.h:177
2: bottom field
Definition: h264.h:140
#define QP_MAX_NUM
Definition: h264.h:104
int16_t(*[2] motion_val)[2]
motion vector table
Definition: avcodec.h:1109
int prev_mb_skipped
Definition: h264.h:268
int constraint_set_flags
constraint_set[0-3]_flag
Definition: h264.h:206
SEI_PicStructType sei_pic_struct
pic_struct in picture timing SEI message
Definition: h264.h:541
Picture * short_ref[32]
Definition: h264.h:489
int dist_scale_factor[16]
Definition: h264.h:373
int slice_beta_offset
Definition: h264.h:440
const uint8_t * field_scan8x8_cavlc_q0
Definition: h264.h:429
uint32_t(*[6] dequant8_coeff)[64]
Definition: h264.h:345
int qp_thresh
QP threshold to skip loopfilter.
Definition: h264.h:266
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:263
int8_t * ref_index[2]
motion reference frame index the order in which these are stored can depend on the codec...
Definition: avcodec.h:1210
buffering period (H.264, D.1.1)
Definition: h264.h:128
unsigned int sps_id
Definition: h264.h:214
#define CABAC
Definition: h264.h:85
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
Definition: h264.h:160
6: bottom field, top field, bottom field repeated, in that order
Definition: h264.h:144
int sei_buffering_period_present
Buffering period SEI flag.
Definition: h264.h:581
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:322
uint32_t time_scale
Definition: h264.h:187
int transform_8x8_mode
transform_8x8_mode_flag
Definition: h264.h:228
H.264 / AVC / MPEG4 prediction functions.
int pic_struct_present_flag
Definition: h264.h:197
uint8_t zigzag_scan[16]
Definition: h264.h:418
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:129
#define AV_ZERO128(d)
Definition: intreadwrite.h:515
MpegEncContext.
Definition: mpegvideo.h:201
struct AVCodecContext * avctx
Definition: mpegvideo.h:203
int is_complex
Definition: h264.h:435
int mb_height
pic_height_in_map_units_minus1 + 1
Definition: h264.h:168
uint8_t * rbsp_buffer[2]
Definition: h264.h:447
int init_qs
pic_init_qs_minus26 + 26
Definition: h264.h:223
int dist_scale_factor_field[2][32]
Definition: h264.h:374
#define tprintf(p,...)
Definition: get_bits.h:579
#define AV_COPY128(d, s)
Definition: intreadwrite.h:487
int nal_hrd_parameters_present_flag
Definition: h264.h:195
uint16_t * slice_table_base
Definition: h264.h:462
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
Definition: h264.h:158
Bi-dir predicted.
Definition: avutil.h:298
int cur_chroma_format_idc
Definition: h264.h:584
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:140
int long_arg
index, pic_num, or num long refs depending on opcode
Definition: h264.h:254
int sei_ct_type
Bit set of clock types for fields/frames in picture timing SEI message.
Definition: h264.h:556
int chroma_qp[2]
Definition: h264.h:264
uint16_t sub_mb_type[4]
Definition: h264.h:358
AVColorTransferCharacteristic
Definition: avcodec.h:544
int bit_depth_luma
bit_depth_luma_minus8 + 8
Definition: h264.h:203
static av_always_inline void write_back_intra_pred_mode(H264Context *h)
Definition: h264.h:788
DSP utils.
int intra16x16_pred_mode
Definition: h264.h:273
Definition: h264.h:110
int ff_h264_frame_start(H264Context *h)
Definition: h264.c:1279
int prev_poc_lsb
poc_lsb of the last reference pic for POC type 0
Definition: h264.h:472
int col_fieldoff
Definition: h264.h:372
uint8_t non_zero_count_cache[15 *8]
non zero coeff count cache.
Definition: h264.h:301
uint8_t(*[2] top_borders)[(16 *3)*2]
Definition: h264.h:295
int current_slice
current slice number, used to initalize slice_num of each thread/context
Definition: h264.h:519
int mb_width
pic_width_in_mbs_minus1 + 1
Definition: h264.h:167
int slice_group_count
num_slice_groups_minus1 + 1
Definition: h264.h:217
uint32_t * mb2b_xy
Definition: h264.h:324
int cpb_cnt
See H.264 E.1.2.
Definition: h264.h:199
int slice_type_fixed
Definition: h264.h:351
struct AVFrame f
Definition: mpegvideo.h:86
int delta_poc_bottom
Definition: h264.h:468
const uint8_t * field_scan_q0
Definition: h264.h:427
int ff_h264_fill_default_ref_list(H264Context *h)
Fill the default_ref_list.
Definition: h264_refs.c:110
H264DSPContext h264dsp
Definition: h264.h:262
int ff_h264_get_profile(SPS *sps)
compute profile from sps
Definition: h264.c:2606
Definition: h264.h:113
uint8_t field_scan8x8[64]
Definition: h264.h:422
#define av_always_inline
Definition: attributes.h:39
int chroma_weight_flag[2]
7.4.3.2 chroma_weight_lX_flag
Definition: h264.h:578
int8_t * intra4x4_pred_mode
Definition: h264.h:289
#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:328
int cpb_removal_delay_length
cpb_removal_delay_length_minus1 + 1
Definition: h264.h:201
8: frame tripling
Definition: h264.h:146
int deblocking_filter
disable_deblocking_filter_idc with 1<->0
Definition: h264.h:438
#define AV_RN64A(p)
Definition: intreadwrite.h:450
int map_col_to_list0_field[2][2][16+32]
Definition: h264.h:376
#define LIST_NOT_USED
Definition: h264.h:310
uint8_t(* non_zero_count)[48]
Definition: h264.h:303
unsigned int crop_bottom
frame_cropping_rect_bottom_offset
Definition: h264.h:176
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:108
int slice_num
Definition: h264.h:347
int sei_recovery_frame_cnt
recovery_frame_cnt from SEI message
Definition: h264.h:575
int level_idc
Definition: h264.h:155
int nal_ref_idc
Definition: h264.h:445
uint8_t field_scan[16]
Definition: h264.h:421
struct PPS PPS
Picture parameter set.
void ff_h264_hl_decode_mb(H264Context *h)
Definition: h264.c:2226
int b_stride
Definition: h264.h:326
int sei_dpb_output_delay
dpb_output_delay in picture timing SEI message, see H.264 C.2.2
Definition: h264.h:561
unsigned int rbsp_buffer_size[2]
Definition: h264.h:448
recovery point (frame # to decoder sync)
Definition: h264.h:131
Context Adaptive Binary Arithmetic Coder.
int neighbor_transform_size
number of neighbors (top and/or left) that used 8x8 dct
Definition: h264.h:316
int8_t ref_cache[2][5 *8]
Definition: h264.h:309
int mb_mbaff
mb_aff_frame && mb_field_decoding_flag
Definition: h264.h:356
int short_ref_count
number of actual short term references
Definition: h264.h:506
int mb_slice_group_map_type
Definition: h264.h:218
enum AVColorSpace colorspace
Definition: h264.h:184