FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
h264.h
Go to the documentation of this file.
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 "h264chroma.h"
37 #include "h264dsp.h"
38 #include "h264pred.h"
39 #include "h264qpel.h"
40 #include "internal.h"
41 #include "mpegutils.h"
42 #include "parser.h"
43 #include "qpeldsp.h"
44 #include "rectangle.h"
45 #include "videodsp.h"
46 
47 #define H264_MAX_PICTURE_COUNT 36
48 #define H264_MAX_THREADS 32
49 
50 #define MAX_SPS_COUNT 32
51 #define MAX_PPS_COUNT 256
52 
53 #define MAX_MMCO_COUNT 66
54 
55 #define MAX_DELAYED_PIC_COUNT 16
56 
57 #define MAX_MBPAIR_SIZE (256*1024) // a tighter bound could be calculated if someone cares about a few bytes
58 
59 /* Compiling in interlaced support reduces the speed
60  * of progressive decoding by about 2%. */
61 #define ALLOW_INTERLACE
62 
63 #define FMO 0
64 
65 /**
66  * The maximum number of slices supported by the decoder.
67  * must be a power of 2
68  */
69 #define MAX_SLICES 32
70 
71 #ifdef ALLOW_INTERLACE
72 #define MB_MBAFF(h) (h)->mb_mbaff
73 #define MB_FIELD(sl) (sl)->mb_field_decoding_flag
74 #define FRAME_MBAFF(h) (h)->mb_aff_frame
75 #define FIELD_PICTURE(h) ((h)->picture_structure != PICT_FRAME)
76 #define LEFT_MBS 2
77 #define LTOP 0
78 #define LBOT 1
79 #define LEFT(i) (i)
80 #else
81 #define MB_MBAFF(h) 0
82 #define MB_FIELD(sl) 0
83 #define FRAME_MBAFF(h) 0
84 #define FIELD_PICTURE(h) 0
85 #undef IS_INTERLACED
86 #define IS_INTERLACED(mb_type) 0
87 #define LEFT_MBS 1
88 #define LTOP 0
89 #define LBOT 0
90 #define LEFT(i) 0
91 #endif
92 #define FIELD_OR_MBAFF_PICTURE(h) (FRAME_MBAFF(h) || FIELD_PICTURE(h))
93 
94 #ifndef CABAC
95 #define CABAC(h) (h)->pps.cabac
96 #endif
97 
98 #define CHROMA(h) ((h)->sps.chroma_format_idc)
99 #define CHROMA422(h) ((h)->sps.chroma_format_idc == 2)
100 #define CHROMA444(h) ((h)->sps.chroma_format_idc == 3)
101 
102 #define EXTENDED_SAR 255
103 
104 #define MB_TYPE_REF0 MB_TYPE_ACPRED // dirty but it fits in 16 bit
105 #define MB_TYPE_8x8DCT 0x01000000
106 #define IS_REF0(a) ((a) & MB_TYPE_REF0)
107 #define IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT)
108 
109 #define QP_MAX_NUM (51 + 6*6) // The maximum supported qp
110 
111 /* NAL unit types */
112 enum {
114  NAL_DPA = 2,
115  NAL_DPB = 3,
116  NAL_DPC = 4,
118  NAL_SEI = 6,
119  NAL_SPS = 7,
120  NAL_PPS = 8,
121  NAL_AUD = 9,
127  NAL_FF_IGNORE = 0xff0f001,
128 };
129 
130 /**
131  * SEI message types
132  */
133 typedef enum {
134  SEI_TYPE_BUFFERING_PERIOD = 0, ///< buffering period (H.264, D.1.1)
135  SEI_TYPE_PIC_TIMING = 1, ///< picture timing
136  SEI_TYPE_USER_DATA_REGISTERED = 4, ///< registered user data as specified by Rec. ITU-T T.35
137  SEI_TYPE_USER_DATA_UNREGISTERED = 5, ///< unregistered user data
138  SEI_TYPE_RECOVERY_POINT = 6, ///< recovery point (frame # to decoder sync)
139  SEI_TYPE_FRAME_PACKING = 45, ///< frame packing arrangement
140  SEI_TYPE_DISPLAY_ORIENTATION = 47, ///< display orientation
141  SEI_TYPE_GREEN_METADATA = 56 ///< GreenMPEG information
142 } SEI_Type;
143 
144 /**
145  * pic_struct in picture timing SEI message
146  */
147 typedef enum {
148  SEI_PIC_STRUCT_FRAME = 0, ///< 0: %frame
149  SEI_PIC_STRUCT_TOP_FIELD = 1, ///< 1: top field
150  SEI_PIC_STRUCT_BOTTOM_FIELD = 2, ///< 2: bottom field
151  SEI_PIC_STRUCT_TOP_BOTTOM = 3, ///< 3: top field, bottom field, in that order
152  SEI_PIC_STRUCT_BOTTOM_TOP = 4, ///< 4: bottom field, top field, in that order
153  SEI_PIC_STRUCT_TOP_BOTTOM_TOP = 5, ///< 5: top field, bottom field, top field repeated, in that order
154  SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM = 6, ///< 6: bottom field, top field, bottom field repeated, in that order
155  SEI_PIC_STRUCT_FRAME_DOUBLING = 7, ///< 7: %frame doubling
156  SEI_PIC_STRUCT_FRAME_TRIPLING = 8 ///< 8: %frame tripling
158 
159 /**
160  * frame_packing_arrangement types
161  */
162 typedef enum {
170 } SEI_FpaType;
171 
172 /**
173  * Sequence parameter set
174  */
175 typedef struct SPS {
176  unsigned int sps_id;
180  int transform_bypass; ///< qpprime_y_zero_transform_bypass_flag
181  int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4
182  int poc_type; ///< pic_order_cnt_type
183  int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4
187  int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle
188  int ref_frame_count; ///< num_ref_frames
190  int mb_width; ///< pic_width_in_mbs_minus1 + 1
191  int mb_height; ///< pic_height_in_map_units_minus1 + 1
193  int mb_aff; ///< mb_adaptive_frame_field_flag
195  int crop; ///< frame_cropping_flag
196 
197  /* those 4 are already in luma samples */
198  unsigned int crop_left; ///< frame_cropping_rect_left_offset
199  unsigned int crop_right; ///< frame_cropping_rect_right_offset
200  unsigned int crop_top; ///< frame_cropping_rect_top_offset
201  unsigned int crop_bottom; ///< frame_cropping_rect_bottom_offset
212  uint32_t time_scale;
214  short offset_for_ref_frame[256]; // FIXME dyn aloc?
224  int cpb_cnt; ///< See H.264 E.1.2
225  int initial_cpb_removal_delay_length; ///< initial_cpb_removal_delay_length_minus1 + 1
226  int cpb_removal_delay_length; ///< cpb_removal_delay_length_minus1 + 1
227  int dpb_output_delay_length; ///< dpb_output_delay_length_minus1 + 1
228  int bit_depth_luma; ///< bit_depth_luma_minus8 + 8
229  int bit_depth_chroma; ///< bit_depth_chroma_minus8 + 8
230  int residual_color_transform_flag; ///< residual_colour_transform_flag
231  int constraint_set_flags; ///< constraint_set[0-3]_flag
232  int new; ///< flag to keep track if the decoder context needs re-init due to changed SPS
233  uint8_t data[4096];
234  size_t data_size;
235 } SPS;
236 
237 /**
238  * Picture parameter set
239  */
240 typedef struct PPS {
241  unsigned int sps_id;
242  int cabac; ///< entropy_coding_mode_flag
243  int pic_order_present; ///< pic_order_present_flag
244  int slice_group_count; ///< num_slice_groups_minus1 + 1
246  unsigned int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1
247  int weighted_pred; ///< weighted_pred_flag
249  int init_qp; ///< pic_init_qp_minus26 + 26
250  int init_qs; ///< pic_init_qs_minus26 + 26
252  int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag
253  int constrained_intra_pred; ///< constrained_intra_pred_flag
254  int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag
255  int transform_8x8_mode; ///< transform_8x8_mode_flag
258  uint8_t chroma_qp_table[2][QP_MAX_NUM+1]; ///< pre-scaled (with chroma_qp_index_offset) version of qp_table
260  uint8_t data[4096];
261  size_t data_size;
262 } PPS;
263 
264 /**
265  * Frame Packing Arrangement Type
266  */
267 typedef struct FPA {
269  int frame_packing_arrangement_cancel_flag; ///< is previous arrangement canceled, -1 if never received
274 } FPA;
275 
276 /**
277  * Green MetaData Information Type
278  */
279 typedef struct GreenMetaData {
282  uint16_t num_seconds;
283  uint16_t num_pictures;
290 } GreenMetaData;
291 
292 /**
293  * Memory management control operation opcode.
294  */
295 typedef enum MMCOOpcode {
296  MMCO_END = 0,
303 } MMCOOpcode;
304 
305 /**
306  * Memory management control operation.
307  */
308 typedef struct MMCO {
310  int short_pic_num; ///< pic_num without wrapping (pic_num & max_pic_num)
311  int long_arg; ///< index, pic_num, or num long refs depending on opcode
312 } MMCO;
313 
314 typedef struct H264Picture {
317 
319  int8_t *qscale_table;
320 
322  int16_t (*motion_val[2])[2];
323 
325  uint32_t *mb_type;
326 
328  void *hwaccel_picture_private; ///< hardware accelerator private data
329 
331  int8_t *ref_index[2];
332 
333  int field_poc[2]; ///< top/bottom POC
334  int poc; ///< frame POC
335  int frame_num; ///< frame_num (raw frame_num from slice header)
336  int mmco_reset; /**< MMCO_RESET set this 1. Reordering code must
337  not mix pictures before and after MMCO_RESET. */
338  int pic_id; /**< pic_num (short -> no wrap version of pic_num,
339  pic_num & max_pic_num; long -> long_pic_num) */
340  int long_ref; ///< 1->long term reference 0->short term reference
341  int ref_poc[2][2][32]; ///< POCs of the frames/fields used as reference (FIXME need per slice)
342  int ref_count[2][2]; ///< number of entries in ref_poc (FIXME need per slice)
343  int mbaff; ///< 1 -> MBAFF frame 0-> not MBAFF
344  int field_picture; ///< whether or not picture was encoded in separate fields
345 
347  int recovered; ///< picture at IDR or recovery point + recovery count
350 
351  int crop;
353  int crop_top;
354 } H264Picture;
355 
356 typedef struct H264Ref {
358  int linesize[3];
359 
361  int poc;
362  int pic_id;
363 
365 } H264Ref;
366 
367 typedef struct H264SliceContext {
368  struct H264Context *h264;
371 
374  int slice_type_nos; ///< S free slice type (SI/SP are remapped to I/P)
376 
377  int qscale;
378  int chroma_qp[2]; // QPc
379  int qp_thresh; ///< QP threshold to skip loopfilter
381 
382  // deblock
383  int deblocking_filter; ///< disable_deblocking_filter_idc with 1 <-> 0
386 
387  // Weighted pred stuff
392  int luma_weight_flag[2]; ///< 7.4.3.2 luma_weight_lX_flag
393  int chroma_weight_flag[2]; ///< 7.4.3.2 chroma_weight_lX_flag
394  // The following 2 can be changed to int8_t but that causes 10cpu cycles speedloss
395  int luma_weight[48][2][2];
396  int chroma_weight[48][2][2][2];
397  int implicit_weight[48][48][2];
398 
401 
404 
407 
412 
414  int top_type;
417 
420 
422  unsigned int top_samples_available;
425 
426  ptrdiff_t linesize, uvlinesize;
427  ptrdiff_t mb_linesize; ///< may be equal to s->linesize or s->linesize * 2, for mbaff
428  ptrdiff_t mb_uvlinesize;
429 
430  int mb_x, mb_y;
431  int mb_xy;
434  // index of the first MB of the next slice
438 
440  int mb_mbaff; ///< mb_aff_frame && mb_field_decoding_flag
441 
443 
444  /**
445  * number of neighbors (top and/or left) that used 8x8 dct
446  */
448 
452 
453  int cbp;
454  int top_cbp;
455  int left_cbp;
456 
459  int map_col_to_list0[2][16 + 32];
460  int map_col_to_list0_field[2][2][16 + 32];
461 
462  /**
463  * num_ref_idx_l0/1_active_minus1 + 1
464  */
465  unsigned int ref_count[2]; ///< counts frames or fields, depending on current mb mode
466  unsigned int list_count;
467  H264Ref ref_list[2][48]; /**< 0..15: frame refs, 16..47: mbaff field refs.
468  * Reordered version of default_ref_list
469  * according to picture reordering in slice header */
470  int ref2frm[MAX_SLICES][2][64]; ///< reference to frame number lists, used in the loop filter, the first 2 are for -2,-1
471 
473  int16_t *dc_val_base;
474 
477  uint8_t (*top_borders[2])[(16 * 3) * 2];
481 
482  /**
483  * non zero coeff count cache.
484  * is 64 if not available.
485  */
487 
488  /**
489  * Motion vector cache.
490  */
491  DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2];
492  DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8];
493  DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5 * 8][2];
495 
496  DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4];
497 
498  ///< as a dct coefficient is int32_t in high depth, we need to reserve twice the space.
499  DECLARE_ALIGNED(16, int16_t, mb)[16 * 48 * 2];
500  DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2];
501  ///< as mb is addressed by scantable[i] and scantable is uint8_t we can either
502  ///< check that i is not too large or ensure that there is some unused stuff after mb
503  int16_t mb_padding[256 * 2];
504 
505  uint8_t (*mvd_table[2])[2];
506 
507  /**
508  * Cabac
509  */
513 
514  // rbsp buffer used for this slice
516  unsigned int rbsp_buffer_size;
518 
519 /**
520  * H264Context
521  */
522 typedef struct H264Context {
530 
535 
538 
539  int pixel_shift; ///< 0 for 8-bit H264, 1 for high-bit-depth H264
540 
541  /* coded dimensions -- 16 * mb w/h */
542  int width, height;
544 
545  /**
546  * Backup frame properties: needed, because they can be different
547  * between returned frame and last decoded frame.
548  **/
552 
556 
558  int flags;
560 
563 
565 
566 #define LIST_NOT_USED -1 // FIXME rename?
567 #define PART_NOT_AVAILABLE -2
568 
569  /**
570  * block_offset[ 0..23] for frame macroblocks
571  * block_offset[24..47] for field macroblocks
572  */
573  int block_offset[2 * (16 * 3)];
574 
575  uint32_t *mb2b_xy; // FIXME are these 4 a good idea?
576  uint32_t *mb2br_xy;
577  int b_stride; // FIXME use s->b4_stride
578 
579 
580  unsigned current_sps_id; ///< id of the current SPS
581  SPS sps; ///< current sps
582  PPS pps; ///< current pps
583 
584  int au_pps_id; ///< pps_id of current access unit
585 
586  uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; // FIXME should these be moved down?
587  uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64];
588  uint32_t(*dequant4_coeff[6])[16];
589  uint32_t(*dequant8_coeff[6])[64];
590 
591  uint16_t *slice_table; ///< slice_table_base + 2*mb_stride + 1
592 
593  // interlacing specific flags
597 
598  uint8_t *list_counts; ///< Array of list_count per MB specifying the slice type
599 
600  /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0, 1, 2), 0x0? luma_cbp */
601  uint16_t *cbp_table;
602 
603  /* chroma_pred_mode for i4x4 or i16x16, else 0 */
605  uint8_t (*mvd_table[2])[2];
607 
620 
622 
623  int mb_y;
626  int mb_num;
627 
628  // =============================================================
629  // Things below are not used in the MB or more inner code
630 
633 
634  /**
635  * Used to parse AVC variant of h264
636  */
637  int is_avc; ///< this flag is != 0 if codec is avc1
638  int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
639 
640  int bit_depth_luma; ///< luma bit depth from sps to detect changes
641  int chroma_format_idc; ///< chroma format from sps to detect changes
642 
645 
646  int dequant_coeff_pps; ///< reinit tables when pps changes
647 
648  uint16_t *slice_table_base;
649 
650  // POC stuff
651  int poc_lsb;
652  int poc_msb;
654  int delta_poc[2];
656  int prev_poc_msb; ///< poc_msb of the last reference pic for POC type 0
657  int prev_poc_lsb; ///< poc_lsb of the last reference pic for POC type 0
658  int frame_num_offset; ///< for POC type 2
659  int prev_frame_num_offset; ///< for POC type 2
660  int prev_frame_num; ///< frame_num of the last pic for POC type 1/2
661 
662  /**
663  * frame_num for frames or 2 * frame_num + 1 for field pics.
664  */
666 
667  /**
668  * max_frame_num or 2 * max_frame_num for field pics.
669  */
671 
679 
680  /**
681  * memory management control operations buffer.
682  */
686 
687  int long_ref_count; ///< number of actual long term references
688  int short_ref_count; ///< number of actual short term references
689 
690  /**
691  * @name Members for slice based multithreading
692  * @{
693  */
694  /**
695  * current slice number, used to initialize slice_num of each thread/context
696  */
698 
699  /**
700  * Max number of threads / contexts.
701  * This is equal to AVCodecContext.thread_count unless
702  * multithreaded decoding is impossible, in which case it is
703  * reduced to 1.
704  */
706 
708 
709  /**
710  * 1 if the single thread fallback warning has already been
711  * displayed, 0 otherwise.
712  */
714 
716 
717  /** @} */
718 
719  /**
720  * pic_struct in picture timing SEI message
721  */
723 
724  /**
725  * Complement sei_pic_struct
726  * SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced frames.
727  * However, soft telecined frames may have these values.
728  * This is used in an attempt to flag soft telecine progressive.
729  */
731 
732  /**
733  * frame_packing_arrangment SEI message
734  */
739 
740  /**
741  * display orientation SEI message
742  */
746 
747  /**
748  * User data registered by Rec. ITU-T T.35 SEI
749  */
754 
755  /**
756  * Bit set of clock types for fields/frames in picture timing SEI message.
757  * For each found ct_type, appropriate bit is set (e.g., bit 1 for
758  * interlaced).
759  */
761 
762  /**
763  * dpb_output_delay in picture timing SEI message, see H.264 C.2.2
764  */
766 
767  /**
768  * cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
769  */
771 
772  /**
773  * recovery_frame_cnt from SEI message
774  *
775  * Set to -1 if no recovery point SEI message found or to number of frames
776  * before playback synchronizes. Frames having recovery point are key
777  * frames.
778  */
780 
781  /**
782  * Are the SEI recovery points looking valid.
783  */
785 
787 
788  /**
789  * recovery_frame is the frame_num at which the next frame should
790  * be fully constructed.
791  *
792  * Set to -1 when not expecting a recovery point.
793  */
795 
796 /**
797  * We have seen an IDR, so all the following frames in coded order are correctly
798  * decodable.
799  */
800 #define FRAME_RECOVERED_IDR (1 << 0)
801 /**
802  * Sufficient number of frames have been decoded since a SEI recovery point,
803  * so all the following frames in presentation order are correct.
804  */
805 #define FRAME_RECOVERED_SEI (1 << 1)
806 
807  int frame_recovered; ///< Initial frame has been completely recovered
808 
810 
812 
813 /* for frame threading, this is set to 1
814  * after finish_setup() has been called, so we cannot modify
815  * some context properties (which are supposed to stay constant between
816  * slices) anymore */
818 
819  // Timestamp stuff
820  int sei_buffering_period_present; ///< Buffering period SEI flag
821  int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs
822 
825  int16_t slice_row[MAX_SLICES]; ///< to detect when MAX_SLICES is too low
826 
830 
832 
837 
838  /* Motion Estimation */
841 
842  /*Green Metadata */
844 
845 } H264Context;
846 
847 extern const uint8_t ff_h264_chroma_qp[7][QP_MAX_NUM + 1]; ///< One chroma qp table for each possible bit depth (8-14).
848 extern const uint16_t ff_h264_mb_sizes[4];
849 
850 /**
851  * Decode SEI
852  */
854 
855 /**
856  * Decode SPS
857  */
858 int ff_h264_decode_seq_parameter_set(H264Context *h, int ignore_truncation);
859 
860 /**
861  * compute profile from sps
862  */
863 int ff_h264_get_profile(SPS *sps);
864 
865 /**
866  * Decode PPS
867  */
869 
870 /**
871  * Decode a network abstraction layer unit.
872  * @param consumed is the number of bytes used as input
873  * @param length is the length of the array
874  * @param dst_length is the number of decoded bytes FIXME here
875  * or a decode rbsp tailing?
876  * @return decoded bytes, might be src+1 if no escapes
877  */
879  int *dst_length, int *consumed, int length);
880 
881 /**
882  * Free any data that may have been allocated in the H264 context
883  * like SPS, PPS etc.
884  */
886 
887 /**
888  * Reconstruct bitstream slice_type.
889  */
891 
892 /**
893  * Allocate tables.
894  * needs width/height
895  */
897 
901 
902 /**
903  * Execute the reference picture marking (memory management control operations).
904  */
905 int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count);
906 
908  int first_slice);
909 
910 int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice);
911 
912 /**
913  * Check if the top & left blocks are available if needed & change the
914  * dc mode so it only uses the available blocks.
915  */
917 
918 /**
919  * Check if the top & left blocks are available if needed & change the
920  * dc mode so it only uses the available blocks.
921  */
923  int mode, int is_chroma);
924 
928 void ff_h264_decode_init_vlc(void);
929 
930 /**
931  * Decode a macroblock
932  * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
933  */
935 
936 /**
937  * Decode a CABAC coded macroblock
938  * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
939  */
941 
943 
945 
949  int *mb_type);
950 
951 void ff_h264_filter_mb_fast(const H264Context *h, H264SliceContext *sl, int mb_x, int mb_y,
952  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
953  unsigned int linesize, unsigned int uvlinesize);
954 void ff_h264_filter_mb(const H264Context *h, H264SliceContext *sl, int mb_x, int mb_y,
955  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
956  unsigned int linesize, unsigned int uvlinesize);
957 
958 /**
959  * Reset SEI values at the beginning of the frame.
960  *
961  * @param h H.264 context.
962  */
964 
965 /**
966  * Get stereo_mode string from the h264 frame_packing_arrangement
967  * @param h H.264 context.
968  */
970 
971 /*
972  * o-o o-o
973  * / / /
974  * o-o o-o
975  * ,---'
976  * o-o o-o
977  * / / /
978  * o-o o-o
979  */
980 
981 /* Scan8 organization:
982  * 0 1 2 3 4 5 6 7
983  * 0 DY y y y y y
984  * 1 y Y Y Y Y
985  * 2 y Y Y Y Y
986  * 3 y Y Y Y Y
987  * 4 y Y Y Y Y
988  * 5 DU u u u u u
989  * 6 u U U U U
990  * 7 u U U U U
991  * 8 u U U U U
992  * 9 u U U U U
993  * 10 DV v v v v v
994  * 11 v V V V V
995  * 12 v V V V V
996  * 13 v V V V V
997  * 14 v V V V V
998  * DY/DU/DV are for luma/chroma DC.
999  */
1000 
1001 #define LUMA_DC_BLOCK_INDEX 48
1002 #define CHROMA_DC_BLOCK_INDEX 49
1003 
1004 // This table must be here because scan8[constant] must be known at compiletime
1005 static const uint8_t scan8[16 * 3 + 3] = {
1006  4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8,
1007  6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8,
1008  4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8,
1009  6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8,
1010  4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8,
1011  6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8,
1012  4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8,
1013  6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8,
1014  4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8,
1015  6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8,
1016  4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8,
1017  6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8,
1018  0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8
1019 };
1020 
1021 static av_always_inline uint32_t pack16to32(unsigned a, unsigned b)
1022 {
1023 #if HAVE_BIGENDIAN
1024  return (b & 0xFFFF) + (a << 16);
1025 #else
1026  return (a & 0xFFFF) + (b << 16);
1027 #endif
1028 }
1029 
1030 static av_always_inline uint16_t pack8to16(unsigned a, unsigned b)
1031 {
1032 #if HAVE_BIGENDIAN
1033  return (b & 0xFF) + (a << 8);
1034 #else
1035  return (a & 0xFF) + (b << 8);
1036 #endif
1037 }
1038 
1039 /**
1040  * Get the chroma qp.
1041  */
1042 static av_always_inline int get_chroma_qp(const H264Context *h, int t, int qscale)
1043 {
1044  return h->pps.chroma_qp_table[t][qscale];
1045 }
1046 
1047 /**
1048  * Get the predicted intra4x4 prediction mode.
1049  */
1051  H264SliceContext *sl, int n)
1052 {
1053  const int index8 = scan8[n];
1054  const int left = sl->intra4x4_pred_mode_cache[index8 - 1];
1055  const int top = sl->intra4x4_pred_mode_cache[index8 - 8];
1056  const int min = FFMIN(left, top);
1057 
1058  ff_tlog(h->avctx, "mode:%d %d min:%d\n", left, top, min);
1059 
1060  if (min < 0)
1061  return DC_PRED;
1062  else
1063  return min;
1064 }
1065 
1067  H264SliceContext *sl)
1068 {
1069  int8_t *i4x4 = sl->intra4x4_pred_mode + h->mb2br_xy[sl->mb_xy];
1070  int8_t *i4x4_cache = sl->intra4x4_pred_mode_cache;
1071 
1072  AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
1073  i4x4[4] = i4x4_cache[7 + 8 * 3];
1074  i4x4[5] = i4x4_cache[7 + 8 * 2];
1075  i4x4[6] = i4x4_cache[7 + 8 * 1];
1076 }
1077 
1079  H264SliceContext *sl)
1080 {
1081  const int mb_xy = sl->mb_xy;
1082  uint8_t *nnz = h->non_zero_count[mb_xy];
1083  uint8_t *nnz_cache = sl->non_zero_count_cache;
1084 
1085  AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]);
1086  AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]);
1087  AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]);
1088  AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]);
1089  AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]);
1090  AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]);
1091  AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]);
1092  AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]);
1093 
1094  if (!h->chroma_y_shift) {
1095  AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]);
1096  AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]);
1097  AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]);
1098  AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]);
1099  }
1100 }
1101 
1103  H264SliceContext *sl,
1104  int b_stride,
1105  int b_xy, int b8_xy,
1106  int mb_type, int list)
1107 {
1108  int16_t(*mv_dst)[2] = &h->cur_pic.motion_val[list][b_xy];
1109  int16_t(*mv_src)[2] = &sl->mv_cache[list][scan8[0]];
1110  AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0);
1111  AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1);
1112  AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2);
1113  AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3);
1114  if (CABAC(h)) {
1115  uint8_t (*mvd_dst)[2] = &sl->mvd_table[list][FMO ? 8 * sl->mb_xy
1116  : h->mb2br_xy[sl->mb_xy]];
1117  uint8_t(*mvd_src)[2] = &sl->mvd_cache[list][scan8[0]];
1118  if (IS_SKIP(mb_type)) {
1119  AV_ZERO128(mvd_dst);
1120  } else {
1121  AV_COPY64(mvd_dst, mvd_src + 8 * 3);
1122  AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0);
1123  AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1);
1124  AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2);
1125  }
1126  }
1127 
1128  {
1129  int8_t *ref_index = &h->cur_pic.ref_index[list][b8_xy];
1130  int8_t *ref_cache = sl->ref_cache[list];
1131  ref_index[0 + 0 * 2] = ref_cache[scan8[0]];
1132  ref_index[1 + 0 * 2] = ref_cache[scan8[4]];
1133  ref_index[0 + 1 * 2] = ref_cache[scan8[8]];
1134  ref_index[1 + 1 * 2] = ref_cache[scan8[12]];
1135  }
1136 }
1137 
1139  H264SliceContext *sl,
1140  int mb_type)
1141 {
1142  const int b_stride = h->b_stride;
1143  const int b_xy = 4 * sl->mb_x + 4 * sl->mb_y * h->b_stride; // try mb2b(8)_xy
1144  const int b8_xy = 4 * sl->mb_xy;
1145 
1146  if (USES_LIST(mb_type, 0)) {
1147  write_back_motion_list(h, sl, b_stride, b_xy, b8_xy, mb_type, 0);
1148  } else {
1149  fill_rectangle(&h->cur_pic.ref_index[0][b8_xy],
1150  2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
1151  }
1152  if (USES_LIST(mb_type, 1))
1153  write_back_motion_list(h, sl, b_stride, b_xy, b8_xy, mb_type, 1);
1154 
1155  if (sl->slice_type_nos == AV_PICTURE_TYPE_B && CABAC(h)) {
1156  if (IS_8X8(mb_type)) {
1157  uint8_t *direct_table = &h->direct_table[4 * sl->mb_xy];
1158  direct_table[1] = sl->sub_mb_type[1] >> 1;
1159  direct_table[2] = sl->sub_mb_type[2] >> 1;
1160  direct_table[3] = sl->sub_mb_type[3] >> 1;
1161  }
1162  }
1163 }
1164 
1166 {
1168  return !(AV_RN64A(sl->sub_mb_type) &
1170  0x0001000100010001ULL));
1171  else
1172  return !(AV_RN64A(sl->sub_mb_type) &
1174  0x0001000100010001ULL));
1175 }
1176 
1177 static inline int find_start_code(const uint8_t *buf, int buf_size,
1178  int buf_index, int next_avc)
1179 {
1180  uint32_t state = -1;
1181 
1182  buf_index = avpriv_find_start_code(buf + buf_index, buf + next_avc + 1, &state) - buf - 1;
1183 
1184  return FFMIN(buf_index, buf_size);
1185 }
1186 
1187 static inline int get_avc_nalsize(H264Context *h, const uint8_t *buf,
1188  int buf_size, int *buf_index)
1189 {
1190  int i, nalsize = 0;
1191 
1192  if (*buf_index >= buf_size - h->nal_length_size) {
1193  // the end of the buffer is reached, refill it.
1194  return AVERROR(EAGAIN);
1195  }
1196 
1197  for (i = 0; i < h->nal_length_size; i++)
1198  nalsize = ((unsigned)nalsize << 8) | buf[(*buf_index)++];
1199  if (nalsize <= 0 || nalsize > buf_size - *buf_index) {
1201  "AVC: nal size %d\n", nalsize);
1202  return AVERROR_INVALIDDATA;
1203  }
1204  return nalsize;
1205 }
1206 
1207 int ff_h264_field_end(H264Context *h, H264SliceContext *sl, int in_setup);
1208 
1211 
1213 
1214 void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height);
1215 int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc);
1218 
1220 #define SLICE_SINGLETHREAD 1
1221 #define SLICE_SKIPED 2
1222 
1223 int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count);
1225  const AVCodecContext *src);
1226 
1228 
1230 
1232 
1233 #endif /* AVCODEC_H264_H */
registered user data as specified by Rec. ITU-T T.35
Definition: h264.h:136
int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc)
Definition: h264.c:1139
int chroma_format_idc
Definition: h264.h:179
struct H264Context * h264
Definition: h264.h:368
int video_signal_type_present_flag
Definition: h264.h:204
const uint8_t * left_block
Definition: h264.h:418
#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:308
int workaround_bugs
Definition: h264.h:559
int long_ref
1->long term reference 0->short term reference
Definition: h264.h:340
#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:713
uint8_t percent_alpha_point_deblocking_instance
Definition: h264.h:287
int col_parity
Definition: h264.h:450
GetBitContext gb
Definition: h264.h:529
int sei_recovery_frame_cnt
Definition: h264.h:349
int ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
Init context Allocate buffers which are not shared amongst multiple threads.
Definition: h264.c:462
enum AVPixelFormat backup_pix_fmt
Definition: h264.h:551
int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count)
Call decode_slice() for each context.
Definition: h264_slice.c:2531
int16_t mb[16 *48 *2]
Definition: h264.h:499
5: top field, bottom field, top field repeated, in that order
Definition: h264.h:153
int topright_mb_xy
Definition: h264.h:410
int sei_cpb_removal_delay
cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
Definition: h264.h:770
int low_delay
Definition: h264.h:555
int mb_num
Definition: h264.h:626
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:181
int mb_aff_frame
Definition: h264.h:594
int topleft_partition
Definition: h264.h:419
uint8_t parse_history[6]
Definition: h264.h:827
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
Definition: h264.h:491
int delta_poc[2]
Definition: h264.h:654
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:447
int dist_scale_factor[32]
Definition: h264.h:457
#define LEFT_MBS
Definition: h264.h:76
int luma_weight[48][2][2]
Definition: h264.h:395
int quincunx_subsampling
Definition: h264.h:738
int edge_emu_buffer_allocated
Definition: h264.h:479
Definition: h264.h:120
int a53_caption_size
Definition: h264.h:752
3: top field, bottom field, in that order
Definition: h264.h:151
#define H264_MAX_PICTURE_COUNT
Definition: h264.h:47
int first_field
Definition: h264.h:596
int ff_h264_decode_mb_cavlc(const H264Context *h, H264SliceContext *sl)
Decode a macroblock.
Definition: h264_cavlc.c:709
uint8_t field_scan8x8_q0[64]
Definition: h264.h:618
unregistered user data
Definition: h264.h:137
int weighted_bipred_idc
Definition: h264.h:248
int left_mb_xy[LEFT_MBS]
Definition: h264.h:411
int chroma_qp_index_offset[2]
Definition: h264.h:251
unsigned int topleft_samples_available
Definition: h264.h:421
H264ChromaContext h264chroma
Definition: h264.h:527
uint16_t * cbp_table
Definition: h264.h:601
int scaling_matrix_present
Definition: h264.h:217
MMCO mmco[MAX_MMCO_COUNT]
memory management control operations buffer.
Definition: h264.h:683
uint8_t scaling_matrix4[6][16]
Definition: h264.h:218
uint8_t mvd_cache[2][5 *8][2]
Definition: h264.h:493
7: frame doubling
Definition: h264.h:155
#define MAX_PPS_COUNT
Definition: h264.h:51
Sequence parameter set.
Definition: h264.h:175
int initial_cpb_removal_delay[32]
Initial timestamps for CPBs.
Definition: h264.h:821
int mb_y
Definition: h264.h:623
int coded_picture_number
Definition: h264.h:554
int bitstream_restriction_flag
Definition: h264.h:215
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:246
#define FMO
Definition: h264.h:63
AVBufferRef * mb_type_buf
Definition: h264.h:324
int bipred_scratchpad_allocated
Definition: h264.h:478
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:834
int chroma_x_shift
Definition: h264.h:543
qpel_mc_func(* qpel_put)[16]
Definition: h264.h:839
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:240
int prev_mb_skipped
Definition: h264.h:399
int crop
Definition: h264.h:351
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:53
int16_t(*[2] motion_val)[2]
Definition: h264.h:322
int flags
Definition: h264.h:558
int frame_mbs_only_flag
Definition: h264.h:192
int mb_height
Definition: h264.h:624
H264Picture * delayed_pic[MAX_DELAYED_PIC_COUNT+2]
Definition: h264.h:675
int is_avc
Used to parse AVC variant of h264.
Definition: h264.h:637
int mmco_index
Definition: h264.h:684
H264Ref default_ref[2]
Definition: h264.h:672
AVBufferPool * ref_index_pool
Definition: h264.h:836
MMCOOpcode
Memory management control operation opcode.
Definition: h264.h:295
uint8_t zigzag_scan8x8_cavlc[64]
Definition: h264.h:610
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:435
uint32_t dequant8_buffer[6][QP_MAX_NUM+1][64]
Definition: h264.h:587
int sei_reguserdata_afd_present
User data registered by Rec.
Definition: h264.h:750
void ff_h264_decode_init_vlc(void)
Definition: h264_cavlc.c:327
H264Context.
Definition: h264.h:522
int16_t mb_padding[256 *2]
Definition: h264.h:503
static av_always_inline void write_back_motion(const H264Context *h, H264SliceContext *sl, int mb_type)
Definition: h264.h:1138
AVFrame * f
Definition: h264.h:315
static av_always_inline void write_back_non_zero_count(const H264Context *h, H264SliceContext *sl)
Definition: h264.h:1078
int prev_poc_msb
poc_msb of the last reference pic for POC type 0
Definition: h264.h:656
int chroma_qp_diff
Definition: h264.h:259
int frame_packing_arrangement_repetition_period
Definition: h264.h:271
uint32_t num_units_in_tick
Definition: h264.h:211
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:152
H264Picture * long_ref[32]
Definition: h264.h:674
int picture_structure
Definition: h264.h:595
#define AV_COPY32(d, s)
Definition: intreadwrite.h:586
int luma_weight_flag[2]
7.4.3.2 luma_weight_lX_flag
Definition: h264.h:392
int profile_idc
Definition: h264.h:177
int frame_packing_arrangement_id
Definition: h264.h:268
unsigned current_sps_id
id of the current SPS
Definition: h264.h:580
MMCOOpcode opcode
Definition: h264.h:309
AVColorTransferCharacteristic
Color Transfer Characteristic.
Definition: pixfmt.h:395
H.264 DSP functions.
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:465
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:1911
int topleft_mb_xy
Definition: h264.h:408
uint8_t * chroma_pred_mode_table
Definition: h264.h:604
int setup_finished
Definition: h264.h:817
uint8_t percent_six_tap_filtering
Definition: h264.h:286
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:200
#define USES_LIST(a, list)
Definition: mpegutils.h:101
int fixed_frame_rate_flag
Definition: h264.h:213
static av_always_inline uint16_t pack8to16(unsigned a, unsigned b)
Definition: h264.h:1030
int is_complex
Definition: h264.h:437
uint8_t scaling_matrix4[6][16]
Definition: h264.h:256
int parse_history_count
Definition: h264.h:828
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
Definition: h264.h:252
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:496
int short_pic_num
pic_num without wrapping (pic_num & max_pic_num)
Definition: h264.h:310
Definition: h264.h:356
uint32_t(*[6] dequant4_coeff)[16]
Definition: h264.h:588
uint8_t * a53_caption
Definition: h264.h:753
uint8_t
int prev_frame_num_offset
for POC type 2
Definition: h264.h:659
SEI_FpaType frame_packing_arrangement_type
Definition: h264.h:270
int full_range
Definition: h264.h:205
unsigned int crop_left
frame_cropping_rect_left_offset
Definition: h264.h:198
int offset_for_non_ref_pic
Definition: h264.h:185
mode
Definition: f_perms.c:27
int ff_h264_check_intra_pred_mode(const H264Context *h, H264SliceContext *sl, 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:187
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:189
int slice_alpha_c0_offset
Definition: h264.h:384
int poc
Definition: h264.h:361
int field_picture
whether or not picture was encoded in separate fields
Definition: h264.h:344
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
Definition: h264.h:229
AVColorSpace
YUV colorspace type.
Definition: pixfmt.h:420
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
Definition: h264.c:401
enum AVColorPrimaries color_primaries
Definition: h264.h:207
int poc
frame POC
Definition: h264.h:334
void ff_h264_direct_dist_scale_factor(const H264Context *const h, H264SliceContext *sl)
Definition: h264_direct.c:51
int slice_type
Definition: h264.h:373
int ff_h264_check_intra4x4_pred_mode(const H264Context *h, H264SliceContext *sl)
Check if the top & left blocks are available if needed & change the dc mode so it only uses the avail...
Definition: h264.c:140
int cabac
entropy_coding_mode_flag
Definition: h264.h:242
static int find_start_code(const uint8_t *buf, int buf_size, int buf_index, int next_avc)
Definition: h264.h:1177
Definition: h264.h:114
unsigned int crop_right
frame_cropping_rect_right_offset
Definition: h264.h:199
SEI_PicStructType
pic_struct in picture timing SEI message
Definition: h264.h:147
uint8_t(*[2] top_borders)[(16 *3)*2]
Definition: h264.h:477
int invalid_gap
Definition: h264.h:348
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:807
int map_col_to_list0_field[2][2][16+32]
Definition: h264.h:460
int height
Definition: h264.h:542
static av_always_inline int pred_intra_mode(const H264Context *h, H264SliceContext *sl, int n)
Get the predicted intra4x4 prediction mode.
Definition: h264.h:1050
int transform_bypass
qpprime_y_zero_transform_bypass_flag
Definition: h264.h:180
qpel_mc_func(* qpel_avg)[16]
Definition: h264.h:840
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
Definition: h264.h:254
bitstream reader API header.
int chroma_y_shift
Definition: h264.h:543
#define MAX_DELAYED_PIC_COUNT
Definition: h264.h:55
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:318
SEI_Type
SEI message types.
Definition: h264.h:133
H264Picture * parent
Definition: h264.h:364
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:376
int recovered
picture at IDR or recovery point + recovery count
Definition: h264.h:347
#define AV_COPY64(d, s)
Definition: intreadwrite.h:590
int chroma_qp[2]
Definition: h264.h:378
#define av_log(a,...)
uint8_t period_type
Definition: h264.h:281
int sei_vflip
Definition: h264.h:745
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:432
unsigned int rbsp_buffer_size
Definition: h264.h:516
int last_pocs[MAX_DELAYED_PIC_COUNT]
Definition: h264.h:676
int width
Definition: h264.h:542
#define MAX_SLICES
The maximum number of slices supported by the decoder.
Definition: h264.h:69
Definition: h264.h:121
int slice_num
Definition: h264.h:372
int frame_num
Definition: h264.h:655
unsigned int topright_samples_available
Definition: h264.h:423
void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl)
Definition: h264_mb.c:818
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:53
enum AVColorTransferCharacteristic color_trc
Definition: h264.h:208
int mb_aff
mb_adaptive_frame_field_flag
Definition: h264.h:193
H264PredContext hpc
Definition: h264.h:562
#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:1165
int16_t * dc_val_base
Definition: h264.h:473
int poc_type
pic_order_cnt_type
Definition: h264.h:182
int context_initialized
Definition: h264.h:557
static av_always_inline void write_back_intra_pred_mode(const H264Context *h, H264SliceContext *sl)
Definition: h264.h:1066
int constrained_intra_pred
constrained_intra_pred_flag
Definition: h264.h:253
ERContext er
Definition: h264.h:370
int nal_unit_type
Definition: h264.h:632
int num_reorder_frames
Definition: h264.h:216
#define AVERROR(e)
Definition: error.h:43
void * hwaccel_picture_private
hardware accelerator private data
Definition: h264.h:328
int backup_height
Definition: h264.h:550
int map_col_to_list0[2][16+32]
Definition: h264.h:459
int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size)
Definition: h264.c:530
int time_offset_length
Definition: h264.h:223
int8_t intra4x4_pred_mode_cache[5 *8]
Definition: h264.h:405
int backup_width
Backup frame properties: needed, because they can be different between returned frame and last decode...
Definition: h264.h:549
SEI_FpaType
frame_packing_arrangement types
Definition: h264.h:162
int parse_last_mb
Definition: h264.h:829
PPS pps
current pps
Definition: h264.h:582
int deblocking_filter
disable_deblocking_filter_idc with 1 <-> 0
Definition: h264.h:383
uint8_t(*[2] mvd_table)[2]
Definition: h264.h:605
int prev_interlaced_frame
Complement sei_pic_struct SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced...
Definition: h264.h:730
int ref_poc[2][2][32]
POCs of the frames/fields used as reference (FIXME need per slice)
Definition: h264.h:341
ThreadFrame tf
Definition: h264.h:316
0: frame
Definition: h264.h:148
int weighted_pred
weighted_pred_flag
Definition: h264.h:247
GLsizei GLsizei * length
Definition: opengl_enc.c:115
#define IS_SKIP(a)
Definition: mpegutils.h:83
H264QpelContext h264qpel
Definition: h264.h:528
int direct_spatial_mv_pred
Definition: h264.h:449
#define CABAC(h)
Definition: h264.h:95
uint16_t num_pictures
Definition: h264.h:283
unsigned int top_samples_available
Definition: h264.h:422
int frame_num
frame_num (raw frame_num from slice header)
Definition: h264.h:335
static av_always_inline uint32_t pack16to32(unsigned a, unsigned b)
Definition: h264.h:1021
int valid_recovery_point
Are the SEI recovery points looking valid.
Definition: h264.h:784
int residual_color_transform_flag
residual_colour_transform_flag
Definition: h264.h:230
uint8_t * list_counts
Array of list_count per MB specifying the slice type.
Definition: h264.h:598
int delta_pic_order_always_zero_flag
Definition: h264.h:184
GreenMetaData sei_green_metadata
Definition: h264.h:843
int offset_for_top_to_bottom_field
Definition: h264.h:186
int slice_type_nos
S free slice type (SI/SP are remapped to I/P)
Definition: h264.h:374
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:609
int mb_skip_run
Definition: h264.h:436
AVBufferRef * hwaccel_priv_buf
Definition: h264.h:327
static const uint8_t scan8[16 *3+3]
Definition: h264.h:1005
const uint16_t ff_h264_mb_sizes[4]
Definition: h264.c:57
int crop_left
Definition: h264.h:352
uint8_t cabac_state[1024]
Definition: h264.h:511
int crop
frame_cropping_flag
Definition: h264.h:195
int ff_h264_decode_init(AVCodecContext *avctx)
Definition: h264.c:652
int pic_id
Definition: h264.h:362
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:500
int content_interpretation_type
Definition: h264.h:272
uint8_t * direct_table
Definition: h264.h:606
int use_weight
Definition: h264.h:388
uint8_t scaling_matrix8[6][64]
Definition: h264.h:257
int nal_length_size
Number of bytes used for nal length (1, 2 or 4)
Definition: h264.h:638
useful rectangle filling function
size_t data_size
Definition: h264.h:234
AVBufferRef * motion_val_buf[2]
Definition: h264.h:321
int sei_anticlockwise_rotation
Definition: h264.h:744
Context for storing H.264 DSP functions.
Definition: h264dsp.h:41
int ref_frame_count
num_ref_frames
Definition: h264.h:188
int frame_num_offset
for POC type 2
Definition: h264.h:658
int chroma_pred_mode
Definition: h264.h:402
#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:225
FPA sei_fpa
Definition: h264.h:786
int x264_build
Definition: h264.h:621
uint32_t * mb2br_xy
Definition: h264.h:576
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:229
#define MB_TYPE_DIRECT2
Definition: avcodec.h:1148
#define FFMIN(a, b)
Definition: common.h:96
uint16_t * slice_table
slice_table_base + 2*mb_stride + 1
Definition: h264.h:591
uint8_t field_scan8x8_cavlc[64]
Definition: h264.h:613
int poc_cycle_length
num_ref_frames_in_pic_order_cnt_cycle
Definition: h264.h:187
CABACContext cabac
Cabac.
Definition: h264.h:510
int colour_description_present_flag
Definition: h264.h:206
int reference
Definition: h264.h:346
AVRational sar
Definition: h264.h:203
int sei_frame_packing_present
frame_packing_arrangment SEI message
Definition: h264.h:735
int redundant_pic_count
Definition: h264.h:442
int nb_slice_ctx
Definition: h264.h:537
int long_ref_count
number of actual long term references
Definition: h264.h:687
uint32_t * mb_type
Definition: h264.h:325
int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src)
Definition: h264_picture.c:68
int top_mb_xy
Definition: h264.h:409
SPS sps
current sps
Definition: h264.h:581
int next_mb_skipped
Definition: h264.h:400
uint8_t percent_non_zero_macroblocks
Definition: h264.h:284
PPS * pps_buffers[MAX_PPS_COUNT]
Definition: h264.h:644
int sei_hflip
Definition: h264.h:745
#define MAX_SPS_COUNT
Definition: h264.h:50
uint8_t chroma_qp_table[2][QP_MAX_NUM+1]
pre-scaled (with chroma_qp_index_offset) version of qp_table
Definition: h264.h:258
int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length)
Decode PPS.
Definition: h264_ps.c:630
void ff_h264_free_tables(H264Context *h)
Definition: h264.c:358
int init_qp
pic_init_qp_minus26 + 26
Definition: h264.h:249
int mmco_reset
Definition: h264.h:685
H264SliceContext * slice_ctx
Definition: h264.h:536
int direct_8x8_inference_flag
Definition: h264.h:194
int n
Definition: avisynth_c.h:547
int poc_lsb
Definition: h264.h:651
int reference
Definition: h264.h:360
int max_pic_num
max_frame_num or 2 * max_frame_num for field pics.
Definition: h264.h:670
int top_borders_allocated[2]
Definition: h264.h:480
int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice)
Definition: h264_refs.c:590
uint8_t scaling_matrix8[6][64]
Definition: h264.h:219
frame packing arrangement
Definition: h264.h:139
uint8_t active_format_description
Definition: h264.h:751
int curr_pic_num
frame_num for frames or 2 * frame_num + 1 for field pics.
Definition: h264.h:665
int chroma_log2_weight_denom
Definition: h264.h:391
#define src
Definition: vp9dsp.c:530
Definition: h264.h:119
uint32_t dequant4_buffer[6][QP_MAX_NUM+1][16]
Definition: h264.h:586
void ff_h264_init_cabac_states(const H264Context *h, H264SliceContext *sl)
Definition: h264_cabac.c:1264
unsigned int sps_id
Definition: h264.h:176
uint8_t * edge_emu_buffer
Definition: h264.h:476
int ff_h264_get_slice_type(const H264SliceContext *sl)
Reconstruct bitstream slice_type.
Definition: h264_slice.c:1948
int top_type
Definition: h264.h:414
int dequant_coeff_pps
reinit tables when pps changes
Definition: h264.h:646
int pic_order_present
pic_order_present_flag
Definition: h264.h:243
SPS * sps_buffers[MAX_SPS_COUNT]
Definition: h264.h:643
uint8_t zigzag_scan_q0[16]
Definition: h264.h:614
int bit_depth_luma
luma bit depth from sps to detect changes
Definition: h264.h:640
int topleft_type
Definition: h264.h:413
short offset_for_ref_frame[256]
Definition: h264.h:214
int chroma_format_idc
chroma format from sps to detect changes
Definition: h264.h:641
VideoDSPContext vdsp
Definition: h264.h:525
int intra16x16_pred_mode
Definition: h264.h:403
int timing_info_present_flag
Definition: h264.h:210
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:622
int mb_stride
Definition: h264.h:625
int vcl_hrd_parameters_present_flag
Definition: h264.h:221
AVCodecContext * avctx
Definition: h264.h:524
uint8_t zigzag_scan8x8_q0[64]
Definition: h264.h:615
#define MB_TYPE_8x16
Definition: avcodec.h:1145
int last_qscale_diff
Definition: h264.h:380
1: top field
Definition: h264.h:149
void ff_h264_remove_all_refs(H264Context *h)
Definition: h264_refs.c:512
int prev_frame_num
frame_num of the last pic for POC type 1/2
Definition: h264.h:660
H264Picture * short_ref[32]
Definition: h264.h:673
int next_outputed_poc
Definition: h264.h:678
int ff_h264_decode_sei(H264Context *h)
Decode SEI.
Definition: h264_sei.c:421
int poc_msb
Definition: h264.h:652
int field_poc[2]
top/bottom POC
Definition: h264.h:333
int recovery_frame
recovery_frame is the frame_num at which the next frame should be fully constructed.
Definition: h264.h:794
int max_contexts
Max number of threads / contexts.
Definition: h264.h:705
main external API structure.
Definition: avcodec.h:1532
int qp_thresh
QP threshold to skip loopfilter.
Definition: h264.h:379
int dpb_output_delay_length
dpb_output_delay_length_minus1 + 1
Definition: h264.h:227
Definition: h264.h:296
int vui_parameters_present_flag
Definition: h264.h:202
2: bottom field
Definition: h264.h:150
#define QP_MAX_NUM
Definition: h264.h:109
uint8_t green_metadata_type
Definition: h264.h:280
void * buf
Definition: avisynth_c.h:553
int resync_mb_y
Definition: h264.h:433
int frame_packing_arrangement_type
Definition: h264.h:736
int8_t * qscale_table
Definition: h264.h:319
int constraint_set_flags
constraint_set[0-3]_flag
Definition: h264.h:231
SEI_PicStructType sei_pic_struct
pic_struct in picture timing SEI message
Definition: h264.h:722
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:1102
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:1187
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:486
Definition: h264.h:116
uint32_t(*[6] dequant8_coeff)[64]
Definition: h264.h:589
rational number numerator/denominator
Definition: rational.h:43
int8_t * ref_index[2]
Definition: h264.h:331
#define MAX_MMCO_COUNT
Definition: h264.h:53
int use_weight_chroma
Definition: h264.h:389
int pixel_shift
0 for 8-bit H264, 1 for high-bit-depth H264
Definition: h264.h:539
int mmco_reset
MMCO_RESET set this 1.
Definition: h264.h:336
int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb, int first_slice)
Definition: h264_refs.c:831
H264Picture * cur_pic_ptr
Definition: h264.h:532
ptrdiff_t mb_uvlinesize
Definition: h264.h:428
int mb_mbaff
mb_aff_frame && mb_field_decoding_flag
Definition: h264.h:440
uint8_t direct_cache[5 *8]
Definition: h264.h:494
AVPictureType
Definition: avutil.h:264
int enable_er
Definition: h264.h:831
display orientation
Definition: h264.h:140
unsigned int sps_id
Definition: h264.h:241
int frame_packing_arrangement_cancel_flag
is previous arrangement canceled, -1 if never received
Definition: h264.h:269
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
Definition: h264.h:183
uint8_t percent_intra_coded_macroblocks
Definition: h264.h:285
6: bottom field, top field, bottom field repeated, in that order
Definition: h264.h:154
int sei_buffering_period_present
Buffering period SEI flag.
Definition: h264.h:820
ptrdiff_t mb_linesize
may be equal to s->linesize or s->linesize * 2, for mbaff
Definition: h264.h:427
int16_t slice_row[MAX_SLICES]
to detect when MAX_SLICES is too low
Definition: h264.h:825
int col_fieldoff
Definition: h264.h:451
ptrdiff_t linesize
Definition: h264.h:426
int block_offset[2 *(16 *3)]
block_offset[ 0..23] for frame macroblocks block_offset[24..47] for field macroblocks ...
Definition: h264.h:573
int quincunx_sampling_flag
Definition: h264.h:273
uint32_t time_scale
Definition: h264.h:212
int linesize[3]
Definition: h264.h:358
int transform_8x8_mode
transform_8x8_mode_flag
Definition: h264.h:255
ptrdiff_t uvlinesize
Definition: h264.h:426
H.264 / AVC / MPEG4 prediction functions.
int pic_struct_present_flag
Definition: h264.h:222
uint8_t zigzag_scan[16]
Definition: h264.h:608
unsigned int list_count
Definition: h264.h:466
picture timing
Definition: h264.h:135
Definition: vp9.h:84
#define AV_ZERO128(d)
Definition: intreadwrite.h:622
uint16_t xsd_metric_value
Definition: h264.h:289
int ff_set_ref_count(H264Context *h, H264SliceContext *sl)
Definition: h264.c:1244
int has_recovery_point
Definition: h264.h:809
uint16_t num_seconds
Definition: h264.h:282
int left_type[LEFT_MBS]
Definition: h264.h:416
int mbaff
1 -> MBAFF frame 0-> not MBAFF
Definition: h264.h:343
A reference to a data buffer.
Definition: buffer.h:81
void ff_h264_flush_change(H264Context *h)
Definition: h264.c:1090
int ff_h264_decode_seq_parameter_set(H264Context *h, int ignore_truncation)
Decode SPS.
Definition: h264_ps.c:323
AVBufferPool * qscale_table_pool
Definition: h264.h:833
H264Picture * next_output_pic
Definition: h264.h:677
int slice_context_count
Definition: h264.h:707
AVBufferPool * motion_val_pool
Definition: h264.h:835
int mb_height
pic_height_in_map_units_minus1 + 1
Definition: h264.h:191
int topright_type
Definition: h264.h:415
int init_qs
pic_init_qs_minus26 + 26
Definition: h264.h:250
int pic_id
pic_num (short -> no wrap version of pic_num, pic_num & max_pic_num; long -> long_pic_num) ...
Definition: h264.h:338
uint8_t xsd_metric_type
Definition: h264.h:288
common internal api header.
#define AV_COPY128(d, s)
Definition: intreadwrite.h:594
int nal_hrd_parameters_present_flag
Definition: h264.h:220
uint16_t * slice_table_base
Definition: h264.h:648
size_t data_size
Definition: h264.h:261
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
Definition: h264.h:181
int missing_fields
Definition: h264.h:811
#define MB_TYPE_8x8
Definition: avcodec.h:1146
int ff_pred_weight_table(H264Context *h, H264SliceContext *sl)
Definition: h264.c:1002
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 implicit_weight[48][48][2]
Definition: h264.h:397
int cur_chroma_format_idc
Definition: h264.h:823
int8_t * intra4x4_pred_mode
Definition: h264.h:406
int long_arg
index, pic_num, or num long refs depending on opcode
Definition: h264.h:311
uint8_t * rbsp_buffer
Definition: h264.h:515
int sei_ct_type
Bit set of clock types for fields/frames in picture timing SEI message.
Definition: h264.h:760
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:470
#define MB_TYPE_16x8
Definition: avcodec.h:1144
Definition: h264.h:115
Core video DSP helper functions.
int bit_depth_luma
bit_depth_luma_minus8 + 8
Definition: h264.h:228
static av_always_inline int get_chroma_qp(const H264Context *h, int t, int qscale)
Get the chroma qp.
Definition: h264.h:1042
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:657
void ff_h264_set_erpic(ERPicture *dst, H264Picture *src)
Definition: h264_picture.c:131
uint8_t zigzag_scan8x8_cavlc_q0[64]
Definition: h264.h:616
int8_t ref_cache[2][5 *8]
Definition: h264.h:492
Decoded Picture Buffer (DPB).
Definition: vaapi_h264.c:81
#define IS_8X8(a)
Definition: mpegutils.h:91
int luma_log2_weight_denom
Definition: h264.h:390
int chroma_weight[48][2][2][2]
Definition: h264.h:396
Frame Packing Arrangement Type.
Definition: h264.h:267
H264Picture cur_pic
Definition: h264.h:533
int sei_display_orientation_present
display orientation SEI message
Definition: h264.h:743
int content_interpretation_type
Definition: h264.h:737
int mb_width
Definition: h264.h:624
enum AVPictureType pict_type
Definition: h264.h:715
void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height)
Definition: h264.c:101
int current_slice
current slice number, used to initialize slice_num of each thread/context
Definition: h264.h:697
buffering period (H.264, D.1.1)
Definition: h264.h:134
int mb_width
pic_width_in_mbs_minus1 + 1
Definition: h264.h:190
int slice_group_count
num_slice_groups_minus1 + 1
Definition: h264.h:244
uint32_t * mb2b_xy
Definition: h264.h:575
H264Ref ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264.h:467
uint8_t field_scan8x8_cavlc_q0[64]
Definition: h264.h:619
int cpb_cnt
See H.264 E.1.2.
Definition: h264.h:224
int cur_bit_depth_luma
Definition: h264.h:824
AVBufferRef * ref_index_buf[2]
Definition: h264.h:330
int delta_poc_bottom
Definition: h264.h:653
H264Picture last_pic_for_ec
Definition: h264.h:534
int au_pps_id
pps_id of current access unit
Definition: h264.h:584
const uint8_t * intra_pcm_ptr
Definition: h264.h:472
H264DSPContext h264dsp
Definition: h264.h:526
int ff_h264_get_profile(SPS *sps)
compute profile from sps
Definition: h264.c:1224
int crop_top
Definition: h264.h:353
unsigned int left_samples_available
Definition: h264.h:424
int ref_count[2][2]
number of entries in ref_poc (FIXME need per slice)
Definition: h264.h:342
uint8_t(*[2] mvd_table)[2]
Definition: h264.h:505
Definition: h264.h:118
uint8_t field_scan8x8[64]
Definition: h264.h:612
int slice_type_fixed
Definition: h264.h:375
static struct @205 state
#define av_always_inline
Definition: attributes.h:39
int slice_beta_offset
Definition: h264.h:385
int8_t * intra4x4_pred_mode
Definition: h264.h:561
int dist_scale_factor_field[2][32]
Definition: h264.h:458
int cpb_removal_delay_length
cpb_removal_delay_length_minus1 + 1
Definition: h264.h:226
8: frame tripling
Definition: h264.h:156
#define AV_RN64A(p)
Definition: intreadwrite.h:530
uint8_t field_scan_q0[16]
Definition: h264.h:617
#define LIST_NOT_USED
Definition: h264.h:566
int mb_field_decoding_flag
Definition: h264.h:439
uint8_t(* non_zero_count)[48]
Definition: h264.h:564
unsigned int crop_bottom
frame_cropping_rect_bottom_offset
Definition: h264.h:201
uint8_t * bipred_scratchpad
Definition: h264.h:475
float min
AVPixelFormat
Pixel format.
Definition: pixfmt.h:61
AVClass * av_class
Definition: h264.h:523
int sei_recovery_frame_cnt
recovery_frame_cnt from SEI message
Definition: h264.h:779
Green MetaData Information Type.
Definition: h264.h:279
int droppable
Definition: h264.h:553
int level_idc
Definition: h264.h:178
int nal_ref_idc
Definition: h264.h:631
GetBitContext gb
Definition: h264.h:369
uint8_t field_scan[16]
Definition: h264.h:611
int cabac_init_idc
Definition: h264.h:512
int b_stride
Definition: h264.h:577
int sei_dpb_output_delay
dpb_output_delay in picture timing SEI message, see H.264 C.2.2
Definition: h264.h:765
recovery point (frame # to decoder sync)
Definition: h264.h:138
Context Adaptive Binary Arithmetic Coder.
int left_cbp
Definition: h264.h:455
GreenMPEG information.
Definition: h264.h:141
int chroma_weight_flag[2]
7.4.3.2 chroma_weight_lX_flag
Definition: h264.h:393
int short_ref_count
number of actual short term references
Definition: h264.h:688
void ff_h264_init_dequant_tables(H264Context *h)
Definition: h264_slice.c:367
int mb_slice_group_map_type
Definition: h264.h:245
enum AVColorSpace colorspace
Definition: h264.h:209