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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 FFmpeg.
6  *
7  * FFmpeg 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  * FFmpeg 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 FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * H.264 / AVC / MPEG4 part10 codec.
25  * @author Michael Niedermayer <michaelni@gmx.at>
26  */
27 
28 #ifndef AVCODEC_H264_H
29 #define AVCODEC_H264_H
30 
31 #include "libavutil/intreadwrite.h"
32 #include "libavutil/thread.h"
33 #include "cabac.h"
34 #include "error_resilience.h"
35 #include "get_bits.h"
36 #include "h264_parse.h"
37 #include "h264chroma.h"
38 #include "h264dsp.h"
39 #include "h264pred.h"
40 #include "h264qpel.h"
41 #include "internal.h"
42 #include "mpegutils.h"
43 #include "parser.h"
44 #include "qpeldsp.h"
45 #include "rectangle.h"
46 #include "videodsp.h"
47 
48 #define H264_MAX_PICTURE_COUNT 36
49 #define H264_MAX_THREADS 32
50 
51 #define MAX_SPS_COUNT 32
52 #define MAX_PPS_COUNT 256
53 
54 #define MAX_MMCO_COUNT 66
55 
56 #define MAX_DELAYED_PIC_COUNT 16
57 
58 #define MAX_MBPAIR_SIZE (256*1024) // a tighter bound could be calculated if someone cares about a few bytes
59 
60 /* Compiling in interlaced support reduces the speed
61  * of progressive decoding by about 2%. */
62 #define ALLOW_INTERLACE
63 
64 #define FMO 0
65 
66 /**
67  * The maximum number of slices supported by the decoder.
68  * must be a power of 2
69  */
70 #define MAX_SLICES 32
71 
72 #ifdef ALLOW_INTERLACE
73 #define MB_MBAFF(h) (h)->mb_mbaff
74 #define MB_FIELD(sl) (sl)->mb_field_decoding_flag
75 #define FRAME_MBAFF(h) (h)->mb_aff_frame
76 #define FIELD_PICTURE(h) ((h)->picture_structure != PICT_FRAME)
77 #define LEFT_MBS 2
78 #define LTOP 0
79 #define LBOT 1
80 #define LEFT(i) (i)
81 #else
82 #define MB_MBAFF(h) 0
83 #define MB_FIELD(sl) 0
84 #define FRAME_MBAFF(h) 0
85 #define FIELD_PICTURE(h) 0
86 #undef IS_INTERLACED
87 #define IS_INTERLACED(mb_type) 0
88 #define LEFT_MBS 1
89 #define LTOP 0
90 #define LBOT 0
91 #define LEFT(i) 0
92 #endif
93 #define FIELD_OR_MBAFF_PICTURE(h) (FRAME_MBAFF(h) || FIELD_PICTURE(h))
94 
95 #ifndef CABAC
96 #define CABAC(h) (h)->pps.cabac
97 #endif
98 
99 #define CHROMA(h) ((h)->sps.chroma_format_idc)
100 #define CHROMA422(h) ((h)->sps.chroma_format_idc == 2)
101 #define CHROMA444(h) ((h)->sps.chroma_format_idc == 3)
102 
103 #define EXTENDED_SAR 255
104 
105 #define MB_TYPE_REF0 MB_TYPE_ACPRED // dirty but it fits in 16 bit
106 #define MB_TYPE_8x8DCT 0x01000000
107 #define IS_REF0(a) ((a) & MB_TYPE_REF0)
108 #define IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT)
109 
110 #define QP_MAX_NUM (51 + 6*6) // The maximum supported qp
111 
112 /* NAL unit types */
113 enum {
115  NAL_DPA = 2,
116  NAL_DPB = 3,
117  NAL_DPC = 4,
119  NAL_SEI = 6,
120  NAL_SPS = 7,
121  NAL_PPS = 8,
122  NAL_AUD = 9,
128  NAL_FF_IGNORE = 0xff0f001,
129 };
130 
131 /**
132  * SEI message types
133  */
134 typedef enum {
135  SEI_TYPE_BUFFERING_PERIOD = 0, ///< buffering period (H.264, D.1.1)
136  SEI_TYPE_PIC_TIMING = 1, ///< picture timing
137  SEI_TYPE_USER_DATA_REGISTERED = 4, ///< registered user data as specified by Rec. ITU-T T.35
138  SEI_TYPE_USER_DATA_UNREGISTERED = 5, ///< unregistered user data
139  SEI_TYPE_RECOVERY_POINT = 6, ///< recovery point (frame # to decoder sync)
140  SEI_TYPE_FRAME_PACKING = 45, ///< frame packing arrangement
141  SEI_TYPE_DISPLAY_ORIENTATION = 47, ///< display orientation
142  SEI_TYPE_GREEN_METADATA = 56 ///< GreenMPEG information
143 } SEI_Type;
144 
145 /**
146  * pic_struct in picture timing SEI message
147  */
148 typedef enum {
149  SEI_PIC_STRUCT_FRAME = 0, ///< 0: %frame
150  SEI_PIC_STRUCT_TOP_FIELD = 1, ///< 1: top field
151  SEI_PIC_STRUCT_BOTTOM_FIELD = 2, ///< 2: bottom field
152  SEI_PIC_STRUCT_TOP_BOTTOM = 3, ///< 3: top field, bottom field, in that order
153  SEI_PIC_STRUCT_BOTTOM_TOP = 4, ///< 4: bottom field, top field, in that order
154  SEI_PIC_STRUCT_TOP_BOTTOM_TOP = 5, ///< 5: top field, bottom field, top field repeated, in that order
155  SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM = 6, ///< 6: bottom field, top field, bottom field repeated, in that order
156  SEI_PIC_STRUCT_FRAME_DOUBLING = 7, ///< 7: %frame doubling
157  SEI_PIC_STRUCT_FRAME_TRIPLING = 8 ///< 8: %frame tripling
159 
160 /**
161  * frame_packing_arrangement types
162  */
163 typedef enum {
171 } SEI_FpaType;
172 
173 /**
174  * Sequence parameter set
175  */
176 typedef struct SPS {
177  unsigned int sps_id;
181  int transform_bypass; ///< qpprime_y_zero_transform_bypass_flag
182  int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4
183  int poc_type; ///< pic_order_cnt_type
184  int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4
188  int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle
189  int ref_frame_count; ///< num_ref_frames
191  int mb_width; ///< pic_width_in_mbs_minus1 + 1
192  int mb_height; ///< pic_height_in_map_units_minus1 + 1
194  int mb_aff; ///< mb_adaptive_frame_field_flag
196  int crop; ///< frame_cropping_flag
197 
198  /* those 4 are already in luma samples */
199  unsigned int crop_left; ///< frame_cropping_rect_left_offset
200  unsigned int crop_right; ///< frame_cropping_rect_right_offset
201  unsigned int crop_top; ///< frame_cropping_rect_top_offset
202  unsigned int crop_bottom; ///< frame_cropping_rect_bottom_offset
213  uint32_t time_scale;
215  short offset_for_ref_frame[256]; // FIXME dyn aloc?
225  int cpb_cnt; ///< See H.264 E.1.2
226  int initial_cpb_removal_delay_length; ///< initial_cpb_removal_delay_length_minus1 + 1
227  int cpb_removal_delay_length; ///< cpb_removal_delay_length_minus1 + 1
228  int dpb_output_delay_length; ///< dpb_output_delay_length_minus1 + 1
229  int bit_depth_luma; ///< bit_depth_luma_minus8 + 8
230  int bit_depth_chroma; ///< bit_depth_chroma_minus8 + 8
231  int residual_color_transform_flag; ///< residual_colour_transform_flag
232  int constraint_set_flags; ///< constraint_set[0-3]_flag
233  int new; ///< flag to keep track if the decoder context needs re-init due to changed SPS
234  uint8_t data[4096];
235  size_t data_size;
236 } SPS;
237 
238 /**
239  * Picture parameter set
240  */
241 typedef struct PPS {
242  unsigned int sps_id;
243  int cabac; ///< entropy_coding_mode_flag
244  int pic_order_present; ///< pic_order_present_flag
245  int slice_group_count; ///< num_slice_groups_minus1 + 1
247  unsigned int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1
248  int weighted_pred; ///< weighted_pred_flag
250  int init_qp; ///< pic_init_qp_minus26 + 26
251  int init_qs; ///< pic_init_qs_minus26 + 26
253  int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag
254  int constrained_intra_pred; ///< constrained_intra_pred_flag
255  int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag
256  int transform_8x8_mode; ///< transform_8x8_mode_flag
259  uint8_t chroma_qp_table[2][QP_MAX_NUM+1]; ///< pre-scaled (with chroma_qp_index_offset) version of qp_table
261  uint8_t data[4096];
262  size_t data_size;
263 } PPS;
264 
265 /**
266  * Frame Packing Arrangement Type
267  */
268 typedef struct FPA {
270  int frame_packing_arrangement_cancel_flag; ///< is previous arrangement canceled, -1 if never received
275 } FPA;
276 
277 /**
278  * Green MetaData Information Type
279  */
280 typedef struct GreenMetaData {
283  uint16_t num_seconds;
284  uint16_t num_pictures;
291 } GreenMetaData;
292 
293 /**
294  * Memory management control operation opcode.
295  */
296 typedef enum MMCOOpcode {
297  MMCO_END = 0,
304 } MMCOOpcode;
305 
306 /**
307  * Memory management control operation.
308  */
309 typedef struct MMCO {
311  int short_pic_num; ///< pic_num without wrapping (pic_num & max_pic_num)
312  int long_arg; ///< index, pic_num, or num long refs depending on opcode
313 } MMCO;
314 
315 typedef struct H264Picture {
318 
320  int8_t *qscale_table;
321 
323  int16_t (*motion_val[2])[2];
324 
326  uint32_t *mb_type;
327 
329  void *hwaccel_picture_private; ///< hardware accelerator private data
330 
332  int8_t *ref_index[2];
333 
334  int field_poc[2]; ///< top/bottom POC
335  int poc; ///< frame POC
336  int frame_num; ///< frame_num (raw frame_num from slice header)
337  int mmco_reset; /**< MMCO_RESET set this 1. Reordering code must
338  not mix pictures before and after MMCO_RESET. */
339  int pic_id; /**< pic_num (short -> no wrap version of pic_num,
340  pic_num & max_pic_num; long -> long_pic_num) */
341  int long_ref; ///< 1->long term reference 0->short term reference
342  int ref_poc[2][2][32]; ///< POCs of the frames/fields used as reference (FIXME need per slice)
343  int ref_count[2][2]; ///< number of entries in ref_poc (FIXME need per slice)
344  int mbaff; ///< 1 -> MBAFF frame 0-> not MBAFF
345  int field_picture; ///< whether or not picture was encoded in separate fields
346 
348  int recovered; ///< picture at IDR or recovery point + recovery count
351 
352  int crop;
354  int crop_top;
355 } H264Picture;
356 
357 typedef struct H264Ref {
359  int linesize[3];
360 
362  int poc;
363  int pic_id;
364 
366 } H264Ref;
367 
368 typedef struct H264SliceContext {
369  struct H264Context *h264;
372 
375  int slice_type_nos; ///< S free slice type (SI/SP are remapped to I/P)
377 
378  int qscale;
379  int chroma_qp[2]; // QPc
380  int qp_thresh; ///< QP threshold to skip loopfilter
382 
383  // deblock
384  int deblocking_filter; ///< disable_deblocking_filter_idc with 1 <-> 0
387 
389 
392 
395 
398 
403 
405  int top_type;
408 
411 
413  unsigned int top_samples_available;
416 
417  ptrdiff_t linesize, uvlinesize;
418  ptrdiff_t mb_linesize; ///< may be equal to s->linesize or s->linesize * 2, for mbaff
419  ptrdiff_t mb_uvlinesize;
420 
421  int mb_x, mb_y;
422  int mb_xy;
425  // index of the first MB of the next slice
429 
431  int mb_mbaff; ///< mb_aff_frame && mb_field_decoding_flag
432 
434 
435  /**
436  * number of neighbors (top and/or left) that used 8x8 dct
437  */
439 
443 
444  int cbp;
445  int top_cbp;
446  int left_cbp;
447 
450  int map_col_to_list0[2][16 + 32];
451  int map_col_to_list0_field[2][2][16 + 32];
452 
453  /**
454  * num_ref_idx_l0/1_active_minus1 + 1
455  */
456  unsigned int ref_count[2]; ///< counts frames or fields, depending on current mb mode
457  unsigned int list_count;
458  H264Ref ref_list[2][48]; /**< 0..15: frame refs, 16..47: mbaff field refs.
459  * Reordered version of default_ref_list
460  * according to picture reordering in slice header */
461  int ref2frm[MAX_SLICES][2][64]; ///< reference to frame number lists, used in the loop filter, the first 2 are for -2,-1
462 
464  int16_t *dc_val_base;
465 
468  uint8_t (*top_borders[2])[(16 * 3) * 2];
472 
473  /**
474  * non zero coeff count cache.
475  * is 64 if not available.
476  */
478 
479  /**
480  * Motion vector cache.
481  */
482  DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2];
483  DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8];
484  DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5 * 8][2];
486 
487  DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4];
488 
489  ///< as a dct coefficient is int32_t in high depth, we need to reserve twice the space.
490  DECLARE_ALIGNED(16, int16_t, mb)[16 * 48 * 2];
491  DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2];
492  ///< as mb is addressed by scantable[i] and scantable is uint8_t we can either
493  ///< check that i is not too large or ensure that there is some unused stuff after mb
494  int16_t mb_padding[256 * 2];
495 
496  uint8_t (*mvd_table[2])[2];
497 
498  /**
499  * Cabac
500  */
504 
505  // rbsp buffer used for this slice
507  unsigned int rbsp_buffer_size;
509 
510 /**
511  * H264Context
512  */
513 typedef struct H264Context {
514  const AVClass *class;
521 
526 
529 
530  int pixel_shift; ///< 0 for 8-bit H264, 1 for high-bit-depth H264
531 
532  /* coded dimensions -- 16 * mb w/h */
533  int width, height;
535 
536  /**
537  * Backup frame properties: needed, because they can be different
538  * between returned frame and last decoded frame.
539  **/
543 
547 
549  int flags;
551 
554 
556 
557 #define LIST_NOT_USED -1 // FIXME rename?
558 #define PART_NOT_AVAILABLE -2
559 
560  /**
561  * block_offset[ 0..23] for frame macroblocks
562  * block_offset[24..47] for field macroblocks
563  */
564  int block_offset[2 * (16 * 3)];
565 
566  uint32_t *mb2b_xy; // FIXME are these 4 a good idea?
567  uint32_t *mb2br_xy;
568  int b_stride; // FIXME use s->b4_stride
569 
570 
571  unsigned current_sps_id; ///< id of the current SPS
572  SPS sps; ///< current sps
573  PPS pps; ///< current pps
574 
575  int au_pps_id; ///< pps_id of current access unit
576 
577  uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; // FIXME should these be moved down?
578  uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64];
579  uint32_t(*dequant4_coeff[6])[16];
580  uint32_t(*dequant8_coeff[6])[64];
581 
582  uint16_t *slice_table; ///< slice_table_base + 2*mb_stride + 1
583 
584  // interlacing specific flags
588 
589  uint8_t *list_counts; ///< Array of list_count per MB specifying the slice type
590 
591  /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0, 1, 2), 0x0? luma_cbp */
592  uint16_t *cbp_table;
593 
594  /* chroma_pred_mode for i4x4 or i16x16, else 0 */
596  uint8_t (*mvd_table[2])[2];
598 
611 
613 
614  int mb_y;
617  int mb_num;
618 
619  // =============================================================
620  // Things below are not used in the MB or more inner code
621 
624 
625  /**
626  * Used to parse AVC variant of h264
627  */
628  int is_avc; ///< this flag is != 0 if codec is avc1
629  int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
630 
631  int bit_depth_luma; ///< luma bit depth from sps to detect changes
632  int chroma_format_idc; ///< chroma format from sps to detect changes
633 
636 
637  int dequant_coeff_pps; ///< reinit tables when pps changes
638 
639  uint16_t *slice_table_base;
640 
641  // POC stuff
642  int poc_lsb;
643  int poc_msb;
645  int delta_poc[2];
647  int prev_poc_msb; ///< poc_msb of the last reference pic for POC type 0
648  int prev_poc_lsb; ///< poc_lsb of the last reference pic for POC type 0
649  int frame_num_offset; ///< for POC type 2
650  int prev_frame_num_offset; ///< for POC type 2
651  int prev_frame_num; ///< frame_num of the last pic for POC type 1/2
652 
653  /**
654  * frame_num for frames or 2 * frame_num + 1 for field pics.
655  */
657 
658  /**
659  * max_frame_num or 2 * max_frame_num for field pics.
660  */
662 
670 
671  /**
672  * memory management control operations buffer.
673  */
677 
678  int long_ref_count; ///< number of actual long term references
679  int short_ref_count; ///< number of actual short term references
680 
681  /**
682  * @name Members for slice based multithreading
683  * @{
684  */
685  /**
686  * current slice number, used to initialize slice_num of each thread/context
687  */
689 
690  /**
691  * Max number of threads / contexts.
692  * This is equal to AVCodecContext.thread_count unless
693  * multithreaded decoding is impossible, in which case it is
694  * reduced to 1.
695  */
697 
699 
700  /**
701  * 1 if the single thread fallback warning has already been
702  * displayed, 0 otherwise.
703  */
705 
707 
708  /** @} */
709 
710  /**
711  * pic_struct in picture timing SEI message
712  */
714 
715  /**
716  * Complement sei_pic_struct
717  * SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced frames.
718  * However, soft telecined frames may have these values.
719  * This is used in an attempt to flag soft telecine progressive.
720  */
722 
723  /**
724  * frame_packing_arrangment SEI message
725  */
730 
731  /**
732  * display orientation SEI message
733  */
737 
738  /**
739  * User data registered by Rec. ITU-T T.35 SEI
740  */
745 
746  /**
747  * Bit set of clock types for fields/frames in picture timing SEI message.
748  * For each found ct_type, appropriate bit is set (e.g., bit 1 for
749  * interlaced).
750  */
752 
753  /**
754  * dpb_output_delay in picture timing SEI message, see H.264 C.2.2
755  */
757 
758  /**
759  * cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
760  */
762 
763  /**
764  * recovery_frame_cnt from SEI message
765  *
766  * Set to -1 if no recovery point SEI message found or to number of frames
767  * before playback synchronizes. Frames having recovery point are key
768  * frames.
769  */
771 
772  /**
773  * Are the SEI recovery points looking valid.
774  */
776 
778 
779  /**
780  * recovery_frame is the frame_num at which the next frame should
781  * be fully constructed.
782  *
783  * Set to -1 when not expecting a recovery point.
784  */
786 
787 /**
788  * We have seen an IDR, so all the following frames in coded order are correctly
789  * decodable.
790  */
791 #define FRAME_RECOVERED_IDR (1 << 0)
792 /**
793  * Sufficient number of frames have been decoded since a SEI recovery point,
794  * so all the following frames in presentation order are correct.
795  */
796 #define FRAME_RECOVERED_SEI (1 << 1)
797 
798  int frame_recovered; ///< Initial frame has been completely recovered
799 
801 
803 
804 /* for frame threading, this is set to 1
805  * after finish_setup() has been called, so we cannot modify
806  * some context properties (which are supposed to stay constant between
807  * slices) anymore */
809 
810  // Timestamp stuff
811  int sei_buffering_period_present; ///< Buffering period SEI flag
812  int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs
813 
816  int16_t slice_row[MAX_SLICES]; ///< to detect when MAX_SLICES is too low
817 
821 
823 
828 
829  /* Motion Estimation */
832 
833  /*Green Metadata */
835 
836 } H264Context;
837 
838 extern const uint8_t ff_h264_chroma_qp[7][QP_MAX_NUM + 1]; ///< One chroma qp table for each possible bit depth (8-14).
839 extern const uint16_t ff_h264_mb_sizes[4];
840 
841 /**
842  * Decode SEI
843  */
845 
846 /**
847  * Decode SPS
848  */
849 int ff_h264_decode_seq_parameter_set(H264Context *h, int ignore_truncation);
850 
851 /**
852  * compute profile from sps
853  */
854 int ff_h264_get_profile(SPS *sps);
855 
856 /**
857  * Decode PPS
858  */
860 
861 /**
862  * Decode a network abstraction layer unit.
863  * @param consumed is the number of bytes used as input
864  * @param length is the length of the array
865  * @param dst_length is the number of decoded bytes FIXME here
866  * or a decode rbsp tailing?
867  * @return decoded bytes, might be src+1 if no escapes
868  */
870  int *dst_length, int *consumed, int length);
871 
872 /**
873  * Free any data that may have been allocated in the H264 context
874  * like SPS, PPS etc.
875  */
877 
878 /**
879  * Reconstruct bitstream slice_type.
880  */
882 
883 /**
884  * Allocate tables.
885  * needs width/height
886  */
888 
892 
893 /**
894  * Execute the reference picture marking (memory management control operations).
895  */
896 int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count);
897 
899  int first_slice);
900 
901 int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice);
902 
906 void ff_h264_decode_init_vlc(void);
907 
908 /**
909  * Decode a macroblock
910  * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
911  */
913 
914 /**
915  * Decode a CABAC coded macroblock
916  * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
917  */
919 
921 
923 
927  int *mb_type);
928 
929 void ff_h264_filter_mb_fast(const H264Context *h, H264SliceContext *sl, int mb_x, int mb_y,
930  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
931  unsigned int linesize, unsigned int uvlinesize);
932 void ff_h264_filter_mb(const H264Context *h, H264SliceContext *sl, int mb_x, int mb_y,
933  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
934  unsigned int linesize, unsigned int uvlinesize);
935 
936 /**
937  * Reset SEI values at the beginning of the frame.
938  *
939  * @param h H.264 context.
940  */
942 
943 /**
944  * Get stereo_mode string from the h264 frame_packing_arrangement
945  * @param h H.264 context.
946  */
948 
949 /*
950  * o-o o-o
951  * / / /
952  * o-o o-o
953  * ,---'
954  * o-o o-o
955  * / / /
956  * o-o o-o
957  */
958 
959 /* Scan8 organization:
960  * 0 1 2 3 4 5 6 7
961  * 0 DY y y y y y
962  * 1 y Y Y Y Y
963  * 2 y Y Y Y Y
964  * 3 y Y Y Y Y
965  * 4 y Y Y Y Y
966  * 5 DU u u u u u
967  * 6 u U U U U
968  * 7 u U U U U
969  * 8 u U U U U
970  * 9 u U U U U
971  * 10 DV v v v v v
972  * 11 v V V V V
973  * 12 v V V V V
974  * 13 v V V V V
975  * 14 v V V V V
976  * DY/DU/DV are for luma/chroma DC.
977  */
978 
979 #define LUMA_DC_BLOCK_INDEX 48
980 #define CHROMA_DC_BLOCK_INDEX 49
981 
982 // This table must be here because scan8[constant] must be known at compiletime
983 static const uint8_t scan8[16 * 3 + 3] = {
984  4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8,
985  6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8,
986  4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8,
987  6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8,
988  4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8,
989  6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8,
990  4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8,
991  6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8,
992  4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8,
993  6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8,
994  4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8,
995  6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8,
996  0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8
997 };
998 
999 static av_always_inline uint32_t pack16to32(unsigned a, unsigned b)
1000 {
1001 #if HAVE_BIGENDIAN
1002  return (b & 0xFFFF) + (a << 16);
1003 #else
1004  return (a & 0xFFFF) + (b << 16);
1005 #endif
1006 }
1007 
1008 static av_always_inline uint16_t pack8to16(unsigned a, unsigned b)
1009 {
1010 #if HAVE_BIGENDIAN
1011  return (b & 0xFF) + (a << 8);
1012 #else
1013  return (a & 0xFF) + (b << 8);
1014 #endif
1015 }
1016 
1017 /**
1018  * Get the chroma qp.
1019  */
1020 static av_always_inline int get_chroma_qp(const H264Context *h, int t, int qscale)
1021 {
1022  return h->pps.chroma_qp_table[t][qscale];
1023 }
1024 
1025 /**
1026  * Get the predicted intra4x4 prediction mode.
1027  */
1029  H264SliceContext *sl, int n)
1030 {
1031  const int index8 = scan8[n];
1032  const int left = sl->intra4x4_pred_mode_cache[index8 - 1];
1033  const int top = sl->intra4x4_pred_mode_cache[index8 - 8];
1034  const int min = FFMIN(left, top);
1035 
1036  ff_tlog(h->avctx, "mode:%d %d min:%d\n", left, top, min);
1037 
1038  if (min < 0)
1039  return DC_PRED;
1040  else
1041  return min;
1042 }
1043 
1045  H264SliceContext *sl)
1046 {
1047  int8_t *i4x4 = sl->intra4x4_pred_mode + h->mb2br_xy[sl->mb_xy];
1048  int8_t *i4x4_cache = sl->intra4x4_pred_mode_cache;
1049 
1050  AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
1051  i4x4[4] = i4x4_cache[7 + 8 * 3];
1052  i4x4[5] = i4x4_cache[7 + 8 * 2];
1053  i4x4[6] = i4x4_cache[7 + 8 * 1];
1054 }
1055 
1057  H264SliceContext *sl)
1058 {
1059  const int mb_xy = sl->mb_xy;
1060  uint8_t *nnz = h->non_zero_count[mb_xy];
1061  uint8_t *nnz_cache = sl->non_zero_count_cache;
1062 
1063  AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]);
1064  AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]);
1065  AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]);
1066  AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]);
1067  AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]);
1068  AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]);
1069  AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]);
1070  AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]);
1071 
1072  if (!h->chroma_y_shift) {
1073  AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]);
1074  AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]);
1075  AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]);
1076  AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]);
1077  }
1078 }
1079 
1081  H264SliceContext *sl,
1082  int b_stride,
1083  int b_xy, int b8_xy,
1084  int mb_type, int list)
1085 {
1086  int16_t(*mv_dst)[2] = &h->cur_pic.motion_val[list][b_xy];
1087  int16_t(*mv_src)[2] = &sl->mv_cache[list][scan8[0]];
1088  AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0);
1089  AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1);
1090  AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2);
1091  AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3);
1092  if (CABAC(h)) {
1093  uint8_t (*mvd_dst)[2] = &sl->mvd_table[list][FMO ? 8 * sl->mb_xy
1094  : h->mb2br_xy[sl->mb_xy]];
1095  uint8_t(*mvd_src)[2] = &sl->mvd_cache[list][scan8[0]];
1096  if (IS_SKIP(mb_type)) {
1097  AV_ZERO128(mvd_dst);
1098  } else {
1099  AV_COPY64(mvd_dst, mvd_src + 8 * 3);
1100  AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0);
1101  AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1);
1102  AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2);
1103  }
1104  }
1105 
1106  {
1107  int8_t *ref_index = &h->cur_pic.ref_index[list][b8_xy];
1108  int8_t *ref_cache = sl->ref_cache[list];
1109  ref_index[0 + 0 * 2] = ref_cache[scan8[0]];
1110  ref_index[1 + 0 * 2] = ref_cache[scan8[4]];
1111  ref_index[0 + 1 * 2] = ref_cache[scan8[8]];
1112  ref_index[1 + 1 * 2] = ref_cache[scan8[12]];
1113  }
1114 }
1115 
1117  H264SliceContext *sl,
1118  int mb_type)
1119 {
1120  const int b_stride = h->b_stride;
1121  const int b_xy = 4 * sl->mb_x + 4 * sl->mb_y * h->b_stride; // try mb2b(8)_xy
1122  const int b8_xy = 4 * sl->mb_xy;
1123 
1124  if (USES_LIST(mb_type, 0)) {
1125  write_back_motion_list(h, sl, b_stride, b_xy, b8_xy, mb_type, 0);
1126  } else {
1127  fill_rectangle(&h->cur_pic.ref_index[0][b8_xy],
1128  2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
1129  }
1130  if (USES_LIST(mb_type, 1))
1131  write_back_motion_list(h, sl, b_stride, b_xy, b8_xy, mb_type, 1);
1132 
1133  if (sl->slice_type_nos == AV_PICTURE_TYPE_B && CABAC(h)) {
1134  if (IS_8X8(mb_type)) {
1135  uint8_t *direct_table = &h->direct_table[4 * sl->mb_xy];
1136  direct_table[1] = sl->sub_mb_type[1] >> 1;
1137  direct_table[2] = sl->sub_mb_type[2] >> 1;
1138  direct_table[3] = sl->sub_mb_type[3] >> 1;
1139  }
1140  }
1141 }
1142 
1144 {
1146  return !(AV_RN64A(sl->sub_mb_type) &
1148  0x0001000100010001ULL));
1149  else
1150  return !(AV_RN64A(sl->sub_mb_type) &
1152  0x0001000100010001ULL));
1153 }
1154 
1155 static inline int find_start_code(const uint8_t *buf, int buf_size,
1156  int buf_index, int next_avc)
1157 {
1158  uint32_t state = -1;
1159 
1160  buf_index = avpriv_find_start_code(buf + buf_index, buf + next_avc + 1, &state) - buf - 1;
1161 
1162  return FFMIN(buf_index, buf_size);
1163 }
1164 
1165 static inline int get_avc_nalsize(H264Context *h, const uint8_t *buf,
1166  int buf_size, int *buf_index)
1167 {
1168  int i, nalsize = 0;
1169 
1170  if (*buf_index >= buf_size - h->nal_length_size) {
1171  // the end of the buffer is reached, refill it.
1172  return AVERROR(EAGAIN);
1173  }
1174 
1175  for (i = 0; i < h->nal_length_size; i++)
1176  nalsize = ((unsigned)nalsize << 8) | buf[(*buf_index)++];
1177  if (nalsize <= 0 || nalsize > buf_size - *buf_index) {
1179  "AVC: nal size %d\n", nalsize);
1180  return AVERROR_INVALIDDATA;
1181  }
1182  return nalsize;
1183 }
1184 
1185 int ff_h264_field_end(H264Context *h, H264SliceContext *sl, int in_setup);
1186 
1189 
1191 
1192 void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height);
1193 int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc);
1195 
1197 #define SLICE_SINGLETHREAD 1
1198 #define SLICE_SKIPED 2
1199 
1200 int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count);
1202  const AVCodecContext *src);
1203 
1205 
1207 
1209 
1210 #endif /* AVCODEC_H264_H */
registered user data as specified by Rec. ITU-T T.35
Definition: h264.h:137
int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc)
Definition: h264.c:973
int chroma_format_idc
Definition: h264.h:180
struct H264Context * h264
Definition: h264.h:369
int video_signal_type_present_flag
Definition: h264.h:205
const uint8_t * left_block
Definition: h264.h:409
#define ff_tlog(ctx,...)
Definition: internal.h:65
void ff_h264_unref_picture(H264Context *h, H264Picture *pic)
Definition: h264_picture.c:47
Memory management control operation.
Definition: h264.h:309
int workaround_bugs
Definition: h264.h:550
int long_ref
1->long term reference 0->short term reference
Definition: h264.h:341
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
int single_decode_warning
1 if the single thread fallback warning has already been displayed, 0 otherwise.
Definition: h264.h:704
uint8_t percent_alpha_point_deblocking_instance
Definition: h264.h:288
int col_parity
Definition: h264.h:441
GetBitContext gb
Definition: h264.h:520
int sei_recovery_frame_cnt
Definition: h264.h:350
int ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
Init context Allocate buffers which are not shared amongst multiple threads.
Definition: h264.c:368
enum AVPixelFormat backup_pix_fmt
Definition: h264.h:542
int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count)
Call decode_slice() for each context.
Definition: h264_slice.c:2535
int16_t mb[16 *48 *2]
Definition: h264.h:490
5: top field, bottom field, top field repeated, in that order
Definition: h264.h:154
int topright_mb_xy
Definition: h264.h:401
int sei_cpb_removal_delay
cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
Definition: h264.h:761
int low_delay
Definition: h264.h:546
int mb_num
Definition: h264.h:617
int ff_h264_decode_ref_pic_list_reordering(H264Context *h, H264SliceContext *sl)
Definition: h264_refs.c:241
This structure describes decoded (raw) audio or video data.
Definition: frame.h:180
int mb_aff_frame
Definition: h264.h:585
int topleft_partition
Definition: h264.h:410
uint8_t parse_history[6]
Definition: h264.h:818
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
Definition: h264.h:482
int delta_poc[2]
Definition: h264.h:645
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
int neighbor_transform_size
number of neighbors (top and/or left) that used 8x8 dct
Definition: h264.h:438
int dist_scale_factor[32]
Definition: h264.h:448
#define LEFT_MBS
Definition: h264.h:77
int quincunx_subsampling
Definition: h264.h:729
int edge_emu_buffer_allocated
Definition: h264.h:470
Definition: h264.h:121
int a53_caption_size
Definition: h264.h:743
3: top field, bottom field, in that order
Definition: h264.h:152
#define H264_MAX_PICTURE_COUNT
Definition: h264.h:48
int first_field
Definition: h264.h:587
int ff_h264_decode_mb_cavlc(const H264Context *h, H264SliceContext *sl)
Decode a macroblock.
Definition: h264_cavlc.c:706
uint8_t field_scan8x8_q0[64]
Definition: h264.h:609
unregistered user data
Definition: h264.h:138
int weighted_bipred_idc
Definition: h264.h:249
int left_mb_xy[LEFT_MBS]
Definition: h264.h:402
int chroma_qp_index_offset[2]
Definition: h264.h:252
unsigned int topleft_samples_available
Definition: h264.h:412
H264ChromaContext h264chroma
Definition: h264.h:518
uint16_t * cbp_table
Definition: h264.h:592
int scaling_matrix_present
Definition: h264.h:218
MMCO mmco[MAX_MMCO_COUNT]
memory management control operations buffer.
Definition: h264.h:674
uint8_t scaling_matrix4[6][16]
Definition: h264.h:219
uint8_t mvd_cache[2][5 *8][2]
Definition: h264.h:484
7: frame doubling
Definition: h264.h:156
#define MAX_PPS_COUNT
Definition: h264.h:52
Sequence parameter set.
Definition: h264.h:176
int initial_cpb_removal_delay[32]
Initial timestamps for CPBs.
Definition: h264.h:812
int mb_y
Definition: h264.h:614
int coded_picture_number
Definition: h264.h:545
int bitstream_restriction_flag
Definition: h264.h:216
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:247
#define FMO
Definition: h264.h:64
AVBufferRef * mb_type_buf
Definition: h264.h:325
int bipred_scratchpad_allocated
Definition: h264.h:469
const char * b
Definition: vf_curves.c:109
void ff_h264_direct_ref_list_init(const H264Context *const h, H264SliceContext *sl)
Definition: h264_direct.c:110
AVBufferPool * mb_type_pool
Definition: h264.h:825
int chroma_x_shift
Definition: h264.h:534
qpel_mc_func(* qpel_put)[16]
Definition: h264.h:830
void ff_h264_filter_mb_fast(const H264Context *h, H264SliceContext *sl, 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 parameter set.
Definition: h264.h:241
int prev_mb_skipped
Definition: h264.h:390
int crop
Definition: h264.h:352
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:53
int16_t(*[2] motion_val)[2]
Definition: h264.h:323
int flags
Definition: h264.h:549
int frame_mbs_only_flag
Definition: h264.h:193
int mb_height
Definition: h264.h:615
H264Picture * delayed_pic[MAX_DELAYED_PIC_COUNT+2]
Definition: h264.h:666
int is_avc
Used to parse AVC variant of h264.
Definition: h264.h:628
int mmco_index
Definition: h264.h:675
H264Ref default_ref[2]
Definition: h264.h:663
AVBufferPool * ref_index_pool
Definition: h264.h:827
MMCOOpcode
Memory management control operation opcode.
Definition: h264.h:296
uint8_t zigzag_scan8x8_cavlc[64]
Definition: h264.h:601
void(* qpel_mc_func)(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
Definition: qpeldsp.h:65
int next_slice_idx
Definition: h264.h:426
uint32_t dequant8_buffer[6][QP_MAX_NUM+1][64]
Definition: h264.h:578
int sei_reguserdata_afd_present
User data registered by Rec.
Definition: h264.h:741
void ff_h264_decode_init_vlc(void)
Definition: h264_cavlc.c:327
H264Context.
Definition: h264.h:513
int16_t mb_padding[256 *2]
Definition: h264.h:494
static av_always_inline void write_back_motion(const H264Context *h, H264SliceContext *sl, int mb_type)
Definition: h264.h:1116
AVFrame * f
Definition: h264.h:316
static av_always_inline void write_back_non_zero_count(const H264Context *h, H264SliceContext *sl)
Definition: h264.h:1056
int prev_poc_msb
poc_msb of the last reference pic for POC type 0
Definition: h264.h:647
int chroma_qp_diff
Definition: h264.h:260
int frame_packing_arrangement_repetition_period
Definition: h264.h:272
uint32_t num_units_in_tick
Definition: h264.h:212
void ff_h264_filter_mb(const H264Context *h, H264SliceContext *sl, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize)
4: bottom field, top field, in that order
Definition: h264.h:153
H264Picture * long_ref[32]
Definition: h264.h:665
int picture_structure
Definition: h264.h:586
#define AV_COPY32(d, s)
Definition: intreadwrite.h:586
int profile_idc
Definition: h264.h:178
int frame_packing_arrangement_id
Definition: h264.h:269
unsigned current_sps_id
id of the current SPS
Definition: h264.h:571
MMCOOpcode opcode
Definition: h264.h:310
AVColorTransferCharacteristic
Color Transfer Characteristic.
Definition: pixfmt.h:404
H.264 DSP functions.
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:456
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:1786
int topleft_mb_xy
Definition: h264.h:399
uint8_t * chroma_pred_mode_table
Definition: h264.h:595
int setup_finished
Definition: h264.h:808
uint8_t percent_six_tap_filtering
Definition: h264.h:287
void ff_h264_pred_direct_motion(const H264Context *const h, H264SliceContext *sl, int *mb_type)
Definition: h264_direct.c:706
unsigned int crop_top
frame_cropping_rect_top_offset
Definition: h264.h:201
#define USES_LIST(a, list)
Definition: mpegutils.h:101
int fixed_frame_rate_flag
Definition: h264.h:214
static av_always_inline uint16_t pack8to16(unsigned a, unsigned b)
Definition: h264.h:1008
int is_complex
Definition: h264.h:428
uint8_t scaling_matrix4[6][16]
Definition: h264.h:257
int parse_history_count
Definition: h264.h:819
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
Definition: h264.h:253
uint16_t sub_mb_type[4]
as a dct coefficient is int32_t in high depth, we need to reserve twice the space.
Definition: h264.h:487
int short_pic_num
pic_num without wrapping (pic_num & max_pic_num)
Definition: h264.h:311
Definition: h264.h:357
uint32_t(*[6] dequant4_coeff)[16]
Definition: h264.h:579
uint8_t * a53_caption
Definition: h264.h:744
uint8_t
int prev_frame_num_offset
for POC type 2
Definition: h264.h:650
SEI_FpaType frame_packing_arrangement_type
Definition: h264.h:271
int full_range
Definition: h264.h:206
unsigned int crop_left
frame_cropping_rect_left_offset
Definition: h264.h:199
int offset_for_non_ref_pic
Definition: h264.h:186
void ff_h264_reset_sei(H264Context *h)
Reset SEI values at the beginning of the frame.
Definition: h264_sei.c:37
int gaps_in_frame_num_allowed_flag
Definition: h264.h:190
int slice_alpha_c0_offset
Definition: h264.h:385
int poc
Definition: h264.h:362
int field_picture
whether or not picture was encoded in separate fields
Definition: h264.h:345
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
Definition: h264.h:230
AVColorSpace
YUV colorspace type.
Definition: pixfmt.h:429
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
Definition: h264.c:307
enum AVColorPrimaries color_primaries
Definition: h264.h:208
int poc
frame POC
Definition: h264.h:335
void ff_h264_direct_dist_scale_factor(const H264Context *const h, H264SliceContext *sl)
Definition: h264_direct.c:51
int slice_type
Definition: h264.h:374
int cabac
entropy_coding_mode_flag
Definition: h264.h:243
static int find_start_code(const uint8_t *buf, int buf_size, int buf_index, int next_avc)
Definition: h264.h:1155
Definition: h264.h:115
unsigned int crop_right
frame_cropping_rect_right_offset
Definition: h264.h:200
SEI_PicStructType
pic_struct in picture timing SEI message
Definition: h264.h:148
uint8_t(*[2] top_borders)[(16 *3)*2]
Definition: h264.h:468
int invalid_gap
Definition: h264.h:349
Context for storing H.264 prediction functions.
Definition: h264pred.h:92
quarterpel DSP functions
int frame_recovered
Initial frame has been completely recovered.
Definition: h264.h:798
int map_col_to_list0_field[2][2][16+32]
Definition: h264.h:451
int height
Definition: h264.h:533
static av_always_inline int pred_intra_mode(const H264Context *h, H264SliceContext *sl, int n)
Get the predicted intra4x4 prediction mode.
Definition: h264.h:1028
int transform_bypass
qpprime_y_zero_transform_bypass_flag
Definition: h264.h:181
qpel_mc_func(* qpel_avg)[16]
Definition: h264.h:831
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
Definition: h264.h:255
bitstream reader API header.
int chroma_y_shift
Definition: h264.h:534
#define MAX_DELAYED_PIC_COUNT
Definition: h264.h:56
static void fill_rectangle(SDL_Surface *screen, int x, int y, int w, int h, int color, int update)
Definition: ffplay.c:805
ptrdiff_t size
Definition: opengl_enc.c:101
AVBufferRef * qscale_table_buf
Definition: h264.h:319
SEI_Type
SEI message types.
Definition: h264.h:134
H264Picture * parent
Definition: h264.h:365
int ff_h264_decode_mb_cabac(const H264Context *h, H264SliceContext *sl)
Decode a CABAC coded macroblock.
Definition: h264_cabac.c:1915
AVColorPrimaries
Chromaticity coordinates of the source primaries.
Definition: pixfmt.h:385
int recovered
picture at IDR or recovery point + recovery count
Definition: h264.h:348
#define AV_COPY64(d, s)
Definition: intreadwrite.h:590
int chroma_qp[2]
Definition: h264.h:379
#define av_log(a,...)
uint8_t period_type
Definition: h264.h:282
int sei_vflip
Definition: h264.h:736
The buffer pool.
const uint8_t * avpriv_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state)
int resync_mb_x
Definition: h264.h:423
unsigned int rbsp_buffer_size
Definition: h264.h:507
int last_pocs[MAX_DELAYED_PIC_COUNT]
Definition: h264.h:667
int width
Definition: h264.h:533
#define MAX_SLICES
The maximum number of slices supported by the decoder.
Definition: h264.h:70
Definition: h264.h:122
int slice_num
Definition: h264.h:373
int frame_num
Definition: h264.h:646
unsigned int topright_samples_available
Definition: h264.h:414
void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl)
Definition: h264_mb.c:798
const uint8_t ff_h264_chroma_qp[7][QP_MAX_NUM+1]
One chroma qp table for each possible bit depth (8-14).
Definition: h264_ps.c:54
enum AVColorTransferCharacteristic color_trc
Definition: h264.h:209
int mb_aff
mb_adaptive_frame_field_flag
Definition: h264.h:194
H264PredContext hpc
Definition: h264.h:553
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
static av_always_inline int get_dct8x8_allowed(const H264Context *h, H264SliceContext *sl)
Definition: h264.h:1143
int16_t * dc_val_base
Definition: h264.h:464
int poc_type
pic_order_cnt_type
Definition: h264.h:183
int context_initialized
Definition: h264.h:548
static av_always_inline void write_back_intra_pred_mode(const H264Context *h, H264SliceContext *sl)
Definition: h264.h:1044
int constrained_intra_pred
constrained_intra_pred_flag
Definition: h264.h:254
ERContext er
Definition: h264.h:371
int nal_unit_type
Definition: h264.h:623
int num_reorder_frames
Definition: h264.h:217
#define AVERROR(e)
Definition: error.h:43
void * hwaccel_picture_private
hardware accelerator private data
Definition: h264.h:329
int backup_height
Definition: h264.h:541
int map_col_to_list0[2][16+32]
Definition: h264.h:450
int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size)
Definition: h264.c:436
int time_offset_length
Definition: h264.h:224
int8_t intra4x4_pred_mode_cache[5 *8]
Definition: h264.h:396
int backup_width
Backup frame properties: needed, because they can be different between returned frame and last decode...
Definition: h264.h:540
SEI_FpaType
frame_packing_arrangement types
Definition: h264.h:163
int parse_last_mb
Definition: h264.h:820
PPS pps
current pps
Definition: h264.h:573
int deblocking_filter
disable_deblocking_filter_idc with 1 <-> 0
Definition: h264.h:384
uint8_t(*[2] mvd_table)[2]
Definition: h264.h:596
int prev_interlaced_frame
Complement sei_pic_struct SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced...
Definition: h264.h:721
int ref_poc[2][2][32]
POCs of the frames/fields used as reference (FIXME need per slice)
Definition: h264.h:342
ThreadFrame tf
Definition: h264.h:317
0: frame
Definition: h264.h:149
int weighted_pred
weighted_pred_flag
Definition: h264.h:248
GLsizei GLsizei * length
Definition: opengl_enc.c:115
#define IS_SKIP(a)
Definition: mpegutils.h:83
H264QpelContext h264qpel
Definition: h264.h:519
int direct_spatial_mv_pred
Definition: h264.h:440
#define CABAC(h)
Definition: h264.h:96
uint16_t num_pictures
Definition: h264.h:284
unsigned int top_samples_available
Definition: h264.h:413
int frame_num
frame_num (raw frame_num from slice header)
Definition: h264.h:336
static av_always_inline uint32_t pack16to32(unsigned a, unsigned b)
Definition: h264.h:999
int valid_recovery_point
Are the SEI recovery points looking valid.
Definition: h264.h:775
int residual_color_transform_flag
residual_colour_transform_flag
Definition: h264.h:231
uint8_t * list_counts
Array of list_count per MB specifying the slice type.
Definition: h264.h:589
int delta_pic_order_always_zero_flag
Definition: h264.h:185
GreenMetaData sei_green_metadata
Definition: h264.h:834
int offset_for_top_to_bottom_field
Definition: h264.h:187
int slice_type_nos
S free slice type (SI/SP are remapped to I/P)
Definition: h264.h:375
int ff_h264_decode_slice_header(H264Context *h, H264SliceContext *sl)
Decode a slice header.
Definition: h264_slice.c:1150
uint8_t zigzag_scan8x8[64]
Definition: h264.h:600
int mb_skip_run
Definition: h264.h:427
AVBufferRef * hwaccel_priv_buf
Definition: h264.h:328
static const uint8_t scan8[16 *3+3]
Definition: h264.h:983
const uint16_t ff_h264_mb_sizes[4]
Definition: h264.c:56
int crop_left
Definition: h264.h:353
uint8_t cabac_state[1024]
Definition: h264.h:502
int crop
frame_cropping_flag
Definition: h264.h:196
int ff_h264_decode_init(AVCodecContext *avctx)
Definition: h264.c:558
int pic_id
Definition: h264.h:363
int16_t mb_luma_dc[3][16 *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:491
int content_interpretation_type
Definition: h264.h:273
uint8_t * direct_table
Definition: h264.h:597
uint8_t scaling_matrix8[6][64]
Definition: h264.h:258
int nal_length_size
Number of bytes used for nal length (1, 2 or 4)
Definition: h264.h:629
useful rectangle filling function
size_t data_size
Definition: h264.h:235
AVBufferRef * motion_val_buf[2]
Definition: h264.h:322
int sei_anticlockwise_rotation
Definition: h264.h:735
Context for storing H.264 DSP functions.
Definition: h264dsp.h:41
int ref_frame_count
num_ref_frames
Definition: h264.h:189
int frame_num_offset
for POC type 2
Definition: h264.h:649
int chroma_pred_mode
Definition: h264.h:393
#define AV_COPY16(d, s)
Definition: intreadwrite.h:582
int initial_cpb_removal_delay_length
initial_cpb_removal_delay_length_minus1 + 1
Definition: h264.h:226
FPA sei_fpa
Definition: h264.h:777
int x264_build
Definition: h264.h:612
uint32_t * mb2br_xy
Definition: h264.h:567
const uint8_t * ff_h264_decode_nal(H264Context *h, H264SliceContext *sl, const uint8_t *src, int *dst_length, int *consumed, int length)
Decode a network abstraction layer unit.
Definition: h264.c:135
#define MB_TYPE_DIRECT2
Definition: avcodec.h:1242
#define FFMIN(a, b)
Definition: common.h:96
uint16_t * slice_table
slice_table_base + 2*mb_stride + 1
Definition: h264.h:582
uint8_t field_scan8x8_cavlc[64]
Definition: h264.h:604
int poc_cycle_length
num_ref_frames_in_pic_order_cnt_cycle
Definition: h264.h:188
CABACContext cabac
Cabac.
Definition: h264.h:501
int colour_description_present_flag
Definition: h264.h:207
int reference
Definition: h264.h:347
AVRational sar
Definition: h264.h:204
int sei_frame_packing_present
frame_packing_arrangment SEI message
Definition: h264.h:726
int redundant_pic_count
Definition: h264.h:433
int nb_slice_ctx
Definition: h264.h:528
H264PredWeightTable pwt
Definition: h264.h:388
int long_ref_count
number of actual long term references
Definition: h264.h:678
uint32_t * mb_type
Definition: h264.h:326
int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src)
Definition: h264_picture.c:68
int top_mb_xy
Definition: h264.h:400
SPS sps
current sps
Definition: h264.h:572
int next_mb_skipped
Definition: h264.h:391
uint8_t percent_non_zero_macroblocks
Definition: h264.h:285
PPS * pps_buffers[MAX_PPS_COUNT]
Definition: h264.h:635
int sei_hflip
Definition: h264.h:736
#define MAX_SPS_COUNT
Definition: h264.h:51
uint8_t chroma_qp_table[2][QP_MAX_NUM+1]
pre-scaled (with chroma_qp_index_offset) version of qp_table
Definition: h264.h:259
int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length)
Decode PPS.
Definition: h264_ps.c:631
void ff_h264_free_tables(H264Context *h)
Definition: h264.c:264
int init_qp
pic_init_qp_minus26 + 26
Definition: h264.h:250
int mmco_reset
Definition: h264.h:676
H264SliceContext * slice_ctx
Definition: h264.h:527
int direct_8x8_inference_flag
Definition: h264.h:195
int n
Definition: avisynth_c.h:547
int poc_lsb
Definition: h264.h:642
int reference
Definition: h264.h:361
int max_pic_num
max_frame_num or 2 * max_frame_num for field pics.
Definition: h264.h:661
int top_borders_allocated[2]
Definition: h264.h:471
int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice)
Definition: h264_refs.c:589
uint8_t scaling_matrix8[6][64]
Definition: h264.h:220
frame packing arrangement
Definition: h264.h:140
uint8_t active_format_description
Definition: h264.h:742
int curr_pic_num
frame_num for frames or 2 * frame_num + 1 for field pics.
Definition: h264.h:656
#define src
Definition: vp9dsp.c:530
Definition: h264.h:120
uint32_t dequant4_buffer[6][QP_MAX_NUM+1][16]
Definition: h264.h:577
void ff_h264_init_cabac_states(const H264Context *h, H264SliceContext *sl)
Definition: h264_cabac.c:1264
unsigned int sps_id
Definition: h264.h:177
uint8_t * edge_emu_buffer
Definition: h264.h:467
int ff_h264_get_slice_type(const H264SliceContext *sl)
Reconstruct bitstream slice_type.
Definition: h264_slice.c:1953
int top_type
Definition: h264.h:405
int dequant_coeff_pps
reinit tables when pps changes
Definition: h264.h:637
int pic_order_present
pic_order_present_flag
Definition: h264.h:244
SPS * sps_buffers[MAX_SPS_COUNT]
Definition: h264.h:634
uint8_t zigzag_scan_q0[16]
Definition: h264.h:605
int bit_depth_luma
luma bit depth from sps to detect changes
Definition: h264.h:631
int topleft_type
Definition: h264.h:404
short offset_for_ref_frame[256]
Definition: h264.h:215
int chroma_format_idc
chroma format from sps to detect changes
Definition: h264.h:632
VideoDSPContext vdsp
Definition: h264.h:516
int intra16x16_pred_mode
Definition: h264.h:394
int timing_info_present_flag
Definition: h264.h:211
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:621
int mb_stride
Definition: h264.h:616
int vcl_hrd_parameters_present_flag
Definition: h264.h:222
AVCodecContext * avctx
Definition: h264.h:515
uint8_t zigzag_scan8x8_q0[64]
Definition: h264.h:606
#define MB_TYPE_8x16
Definition: avcodec.h:1239
int last_qscale_diff
Definition: h264.h:381
1: top field
Definition: h264.h:150
void ff_h264_remove_all_refs(H264Context *h)
Definition: h264_refs.c:511
int prev_frame_num
frame_num of the last pic for POC type 1/2
Definition: h264.h:651
H264Picture * short_ref[32]
Definition: h264.h:664
int next_outputed_poc
Definition: h264.h:669
int ff_h264_decode_sei(H264Context *h)
Decode SEI.
Definition: h264_sei.c:421
int poc_msb
Definition: h264.h:643
int field_poc[2]
top/bottom POC
Definition: h264.h:334
int recovery_frame
recovery_frame is the frame_num at which the next frame should be fully constructed.
Definition: h264.h:785
int max_contexts
Max number of threads / contexts.
Definition: h264.h:696
main external API structure.
Definition: avcodec.h:1639
int qp_thresh
QP threshold to skip loopfilter.
Definition: h264.h:380
int dpb_output_delay_length
dpb_output_delay_length_minus1 + 1
Definition: h264.h:228
Definition: h264.h:297
int vui_parameters_present_flag
Definition: h264.h:203
2: bottom field
Definition: h264.h:151
#define QP_MAX_NUM
Definition: h264.h:110
uint8_t green_metadata_type
Definition: h264.h:281
static struct @211 state
void * buf
Definition: avisynth_c.h:553
int resync_mb_y
Definition: h264.h:424
int frame_packing_arrangement_type
Definition: h264.h:727
int8_t * qscale_table
Definition: h264.h:320
int constraint_set_flags
constraint_set[0-3]_flag
Definition: h264.h:232
SEI_PicStructType sei_pic_struct
pic_struct in picture timing SEI message
Definition: h264.h:713
static av_always_inline void write_back_motion_list(const H264Context *h, H264SliceContext *sl, int b_stride, int b_xy, int b8_xy, int mb_type, int list)
Definition: h264.h:1080
BYTE int const BYTE int int int height
Definition: avisynth_c.h:676
int ff_h264_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: h264_slice.c:433
static int get_avc_nalsize(H264Context *h, const uint8_t *buf, int buf_size, int *buf_index)
Definition: h264.h:1165
Describe the class of an AVClass context structure.
Definition: log.h:67
uint8_t non_zero_count_cache[15 *8]
non zero coeff count cache.
Definition: h264.h:477
Definition: h264.h:117
uint32_t(*[6] dequant8_coeff)[64]
Definition: h264.h:580
rational number numerator/denominator
Definition: rational.h:43
int8_t * ref_index[2]
Definition: h264.h:332
#define MAX_MMCO_COUNT
Definition: h264.h:54
int pixel_shift
0 for 8-bit H264, 1 for high-bit-depth H264
Definition: h264.h:530
int mmco_reset
MMCO_RESET set this 1.
Definition: h264.h:337
int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb, int first_slice)
Definition: h264_refs.c:830
H264Picture * cur_pic_ptr
Definition: h264.h:523
ptrdiff_t mb_uvlinesize
Definition: h264.h:419
int mb_mbaff
mb_aff_frame && mb_field_decoding_flag
Definition: h264.h:431
uint8_t direct_cache[5 *8]
Definition: h264.h:485
AVPictureType
Definition: avutil.h:264
int enable_er
Definition: h264.h:822
display orientation
Definition: h264.h:141
unsigned int sps_id
Definition: h264.h:242
int frame_packing_arrangement_cancel_flag
is previous arrangement canceled, -1 if never received
Definition: h264.h:270
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
Definition: h264.h:184
uint8_t percent_intra_coded_macroblocks
Definition: h264.h:286
6: bottom field, top field, bottom field repeated, in that order
Definition: h264.h:155
int sei_buffering_period_present
Buffering period SEI flag.
Definition: h264.h:811
ptrdiff_t mb_linesize
may be equal to s->linesize or s->linesize * 2, for mbaff
Definition: h264.h:418
int16_t slice_row[MAX_SLICES]
to detect when MAX_SLICES is too low
Definition: h264.h:816
int col_fieldoff
Definition: h264.h:442
ptrdiff_t linesize
Definition: h264.h:417
int block_offset[2 *(16 *3)]
block_offset[ 0..23] for frame macroblocks block_offset[24..47] for field macroblocks ...
Definition: h264.h:564
int quincunx_sampling_flag
Definition: h264.h:274
uint32_t time_scale
Definition: h264.h:213
int linesize[3]
Definition: h264.h:359
int transform_8x8_mode
transform_8x8_mode_flag
Definition: h264.h:256
ptrdiff_t uvlinesize
Definition: h264.h:417
H.264 / AVC / MPEG4 prediction functions.
int pic_struct_present_flag
Definition: h264.h:223
uint8_t zigzag_scan[16]
Definition: h264.h:599
unsigned int list_count
Definition: h264.h:457
picture timing
Definition: h264.h:136
Definition: vp9.h:84
#define AV_ZERO128(d)
Definition: intreadwrite.h:622
uint16_t xsd_metric_value
Definition: h264.h:290
int ff_set_ref_count(H264Context *h, H264SliceContext *sl)
Definition: h264.c:1078
int has_recovery_point
Definition: h264.h:800
uint16_t num_seconds
Definition: h264.h:283
int left_type[LEFT_MBS]
Definition: h264.h:407
int mbaff
1 -> MBAFF frame 0-> not MBAFF
Definition: h264.h:344
A reference to a data buffer.
Definition: buffer.h:81
void ff_h264_flush_change(H264Context *h)
Definition: h264.c:924
int ff_h264_decode_seq_parameter_set(H264Context *h, int ignore_truncation)
Decode SPS.
Definition: h264_ps.c:324
AVBufferPool * qscale_table_pool
Definition: h264.h:824
H264Picture * next_output_pic
Definition: h264.h:668
int slice_context_count
Definition: h264.h:698
AVBufferPool * motion_val_pool
Definition: h264.h:826
int mb_height
pic_height_in_map_units_minus1 + 1
Definition: h264.h:192
int topright_type
Definition: h264.h:406
int init_qs
pic_init_qs_minus26 + 26
Definition: h264.h:251
int pic_id
pic_num (short -> no wrap version of pic_num, pic_num & max_pic_num; long -> long_pic_num) ...
Definition: h264.h:339
uint8_t xsd_metric_type
Definition: h264.h:289
common internal api header.
#define AV_COPY128(d, s)
Definition: intreadwrite.h:594
int nal_hrd_parameters_present_flag
Definition: h264.h:221
uint16_t * slice_table_base
Definition: h264.h:639
size_t data_size
Definition: h264.h:262
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
Definition: h264.h:182
int missing_fields
Definition: h264.h:802
#define MB_TYPE_8x8
Definition: avcodec.h:1240
void ff_h264_fill_mbaff_ref_list(H264Context *h, H264SliceContext *sl)
Definition: h264_refs.c:372
Bi-dir predicted.
Definition: avutil.h:268
const char * ff_h264_sei_stereo_mode(H264Context *h)
Get stereo_mode string from the h264 frame_packing_arrangement.
Definition: h264_sei.c:491
int cur_chroma_format_idc
Definition: h264.h:814
int8_t * intra4x4_pred_mode
Definition: h264.h:397
int long_arg
index, pic_num, or num long refs depending on opcode
Definition: h264.h:312
uint8_t * rbsp_buffer
Definition: h264.h:506
int sei_ct_type
Bit set of clock types for fields/frames in picture timing SEI message.
Definition: h264.h:751
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:461
#define MB_TYPE_16x8
Definition: avcodec.h:1238
Definition: h264.h:116
Core video DSP helper functions.
int bit_depth_luma
bit_depth_luma_minus8 + 8
Definition: h264.h:229
static av_always_inline int get_chroma_qp(const H264Context *h, int t, int qscale)
Get the chroma qp.
Definition: h264.h:1020
int ff_h264_field_end(H264Context *h, H264SliceContext *sl, int in_setup)
Definition: h264_picture.c:154
int prev_poc_lsb
poc_lsb of the last reference pic for POC type 0
Definition: h264.h:648
void ff_h264_set_erpic(ERPicture *dst, H264Picture *src)
Definition: h264_picture.c:131
uint8_t zigzag_scan8x8_cavlc_q0[64]
Definition: h264.h:607
int8_t ref_cache[2][5 *8]
Definition: h264.h:483
Decoded Picture Buffer (DPB).
Definition: vaapi_h264.c:81
#define IS_8X8(a)
Definition: mpegutils.h:91
Frame Packing Arrangement Type.
Definition: h264.h:268
H264Picture cur_pic
Definition: h264.h:524
int sei_display_orientation_present
display orientation SEI message
Definition: h264.h:734
int content_interpretation_type
Definition: h264.h:728
int mb_width
Definition: h264.h:615
enum AVPictureType pict_type
Definition: h264.h:706
void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height)
Definition: h264.c:100
int current_slice
current slice number, used to initialize slice_num of each thread/context
Definition: h264.h:688
buffering period (H.264, D.1.1)
Definition: h264.h:135
int mb_width
pic_width_in_mbs_minus1 + 1
Definition: h264.h:191
int slice_group_count
num_slice_groups_minus1 + 1
Definition: h264.h:245
uint32_t * mb2b_xy
Definition: h264.h:566
H264Ref ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264.h:458
uint8_t field_scan8x8_cavlc_q0[64]
Definition: h264.h:610
int cpb_cnt
See H.264 E.1.2.
Definition: h264.h:225
int cur_bit_depth_luma
Definition: h264.h:815
AVBufferRef * ref_index_buf[2]
Definition: h264.h:331
int delta_poc_bottom
Definition: h264.h:644
H264Picture last_pic_for_ec
Definition: h264.h:525
int au_pps_id
pps_id of current access unit
Definition: h264.h:575
const uint8_t * intra_pcm_ptr
Definition: h264.h:463
H264DSPContext h264dsp
Definition: h264.h:517
int ff_h264_get_profile(SPS *sps)
compute profile from sps
Definition: h264.c:1058
int crop_top
Definition: h264.h:354
unsigned int left_samples_available
Definition: h264.h:415
int ref_count[2][2]
number of entries in ref_poc (FIXME need per slice)
Definition: h264.h:343
uint8_t(*[2] mvd_table)[2]
Definition: h264.h:496
Definition: h264.h:119
uint8_t field_scan8x8[64]
Definition: h264.h:603
int slice_type_fixed
Definition: h264.h:376
#define av_always_inline
Definition: attributes.h:39
int slice_beta_offset
Definition: h264.h:386
int8_t * intra4x4_pred_mode
Definition: h264.h:552
int dist_scale_factor_field[2][32]
Definition: h264.h:449
int cpb_removal_delay_length
cpb_removal_delay_length_minus1 + 1
Definition: h264.h:227
8: frame tripling
Definition: h264.h:157
#define AV_RN64A(p)
Definition: intreadwrite.h:530
uint8_t field_scan_q0[16]
Definition: h264.h:608
#define LIST_NOT_USED
Definition: h264.h:557
int mb_field_decoding_flag
Definition: h264.h:430
uint8_t(* non_zero_count)[48]
Definition: h264.h:555
H.264 decoder/parser shared code.
unsigned int crop_bottom
frame_cropping_rect_bottom_offset
Definition: h264.h:202
uint8_t * bipred_scratchpad
Definition: h264.h:466
float min
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
int sei_recovery_frame_cnt
recovery_frame_cnt from SEI message
Definition: h264.h:770
Green MetaData Information Type.
Definition: h264.h:280
int droppable
Definition: h264.h:544
int level_idc
Definition: h264.h:179
int nal_ref_idc
Definition: h264.h:622
GetBitContext gb
Definition: h264.h:370
uint8_t field_scan[16]
Definition: h264.h:602
int cabac_init_idc
Definition: h264.h:503
int b_stride
Definition: h264.h:568
int sei_dpb_output_delay
dpb_output_delay in picture timing SEI message, see H.264 C.2.2
Definition: h264.h:756
recovery point (frame # to decoder sync)
Definition: h264.h:139
Context Adaptive Binary Arithmetic Coder.
int left_cbp
Definition: h264.h:446
GreenMPEG information.
Definition: h264.h:142
int short_ref_count
number of actual short term references
Definition: h264.h:679
void ff_h264_init_dequant_tables(H264Context *h)
Definition: h264_slice.c:367
int mb_slice_group_map_type
Definition: h264.h:246
enum AVColorSpace colorspace
Definition: h264.h:210