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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 "cabac.h"
33 #include "error_resilience.h"
34 #include "get_bits.h"
35 #include "h264chroma.h"
36 #include "h264dsp.h"
37 #include "h264pred.h"
38 #include "h264qpel.h"
39 #include "internal.h"
40 #include "mpegutils.h"
41 #include "parser.h"
42 #include "qpeldsp.h"
43 #include "rectangle.h"
44 #include "videodsp.h"
45 
46 #define H264_MAX_PICTURE_COUNT 36
47 #define H264_MAX_THREADS 32
48 
49 #define MAX_SPS_COUNT 32
50 #define MAX_PPS_COUNT 256
51 
52 #define MAX_MMCO_COUNT 66
53 
54 #define MAX_DELAYED_PIC_COUNT 16
55 
56 #define MAX_MBPAIR_SIZE (256*1024) // a tighter bound could be calculated if someone cares about a few bytes
57 
58 /* Compiling in interlaced support reduces the speed
59  * of progressive decoding by about 2%. */
60 #define ALLOW_INTERLACE
61 
62 #define FMO 0
63 
64 /**
65  * The maximum number of slices supported by the decoder.
66  * must be a power of 2
67  */
68 #define MAX_SLICES 32
69 
70 #ifdef ALLOW_INTERLACE
71 #define MB_MBAFF(h) (h)->mb_mbaff
72 #define MB_FIELD(sl) (sl)->mb_field_decoding_flag
73 #define FRAME_MBAFF(h) (h)->mb_aff_frame
74 #define FIELD_PICTURE(h) ((h)->picture_structure != PICT_FRAME)
75 #define LEFT_MBS 2
76 #define LTOP 0
77 #define LBOT 1
78 #define LEFT(i) (i)
79 #else
80 #define MB_MBAFF(h) 0
81 #define MB_FIELD(sl) 0
82 #define FRAME_MBAFF(h) 0
83 #define FIELD_PICTURE(h) 0
84 #undef IS_INTERLACED
85 #define IS_INTERLACED(mb_type) 0
86 #define LEFT_MBS 1
87 #define LTOP 0
88 #define LBOT 0
89 #define LEFT(i) 0
90 #endif
91 #define FIELD_OR_MBAFF_PICTURE(h) (FRAME_MBAFF(h) || FIELD_PICTURE(h))
92 
93 #ifndef CABAC
94 #define CABAC(h) (h)->pps.cabac
95 #endif
96 
97 #define CHROMA(h) ((h)->sps.chroma_format_idc)
98 #define CHROMA422(h) ((h)->sps.chroma_format_idc == 2)
99 #define CHROMA444(h) ((h)->sps.chroma_format_idc == 3)
100 
101 #define EXTENDED_SAR 255
102 
103 #define MB_TYPE_REF0 MB_TYPE_ACPRED // dirty but it fits in 16 bit
104 #define MB_TYPE_8x8DCT 0x01000000
105 #define IS_REF0(a) ((a) & MB_TYPE_REF0)
106 #define IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT)
107 
108 #define QP_MAX_NUM (51 + 6*6) // The maximum supported qp
109 
110 /* NAL unit types */
111 enum {
113  NAL_DPA = 2,
114  NAL_DPB = 3,
115  NAL_DPC = 4,
117  NAL_SEI = 6,
118  NAL_SPS = 7,
119  NAL_PPS = 8,
120  NAL_AUD = 9,
126  NAL_FF_IGNORE = 0xff0f001,
127 };
128 
129 /**
130  * SEI message types
131  */
132 typedef enum {
133  SEI_TYPE_BUFFERING_PERIOD = 0, ///< buffering period (H.264, D.1.1)
134  SEI_TYPE_PIC_TIMING = 1, ///< picture timing
135  SEI_TYPE_USER_DATA_REGISTERED = 4, ///< registered user data as specified by Rec. ITU-T T.35
136  SEI_TYPE_USER_DATA_UNREGISTERED = 5, ///< unregistered user data
137  SEI_TYPE_RECOVERY_POINT = 6, ///< recovery point (frame # to decoder sync)
138  SEI_TYPE_FRAME_PACKING = 45, ///< frame packing arrangement
139  SEI_TYPE_DISPLAY_ORIENTATION = 47, ///< display orientation
140  SEI_TYPE_GREEN_METADATA = 56 ///< GreenMPEG information
141 } SEI_Type;
142 
143 /**
144  * pic_struct in picture timing SEI message
145  */
146 typedef enum {
147  SEI_PIC_STRUCT_FRAME = 0, ///< 0: %frame
148  SEI_PIC_STRUCT_TOP_FIELD = 1, ///< 1: top field
149  SEI_PIC_STRUCT_BOTTOM_FIELD = 2, ///< 2: bottom field
150  SEI_PIC_STRUCT_TOP_BOTTOM = 3, ///< 3: top field, bottom field, in that order
151  SEI_PIC_STRUCT_BOTTOM_TOP = 4, ///< 4: bottom field, top field, in that order
152  SEI_PIC_STRUCT_TOP_BOTTOM_TOP = 5, ///< 5: top field, bottom field, top field repeated, in that order
153  SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM = 6, ///< 6: bottom field, top field, bottom field repeated, in that order
154  SEI_PIC_STRUCT_FRAME_DOUBLING = 7, ///< 7: %frame doubling
155  SEI_PIC_STRUCT_FRAME_TRIPLING = 8 ///< 8: %frame tripling
157 
158 /**
159  * frame_packing_arrangement types
160  */
161 typedef enum {
169 } SEI_FpaType;
170 
171 /**
172  * Sequence parameter set
173  */
174 typedef struct SPS {
175  unsigned int sps_id;
179  int transform_bypass; ///< qpprime_y_zero_transform_bypass_flag
180  int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4
181  int poc_type; ///< pic_order_cnt_type
182  int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4
186  int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle
187  int ref_frame_count; ///< num_ref_frames
189  int mb_width; ///< pic_width_in_mbs_minus1 + 1
190  int mb_height; ///< pic_height_in_map_units_minus1 + 1
192  int mb_aff; ///< mb_adaptive_frame_field_flag
194  int crop; ///< frame_cropping_flag
195 
196  /* those 4 are already in luma samples */
197  unsigned int crop_left; ///< frame_cropping_rect_left_offset
198  unsigned int crop_right; ///< frame_cropping_rect_right_offset
199  unsigned int crop_top; ///< frame_cropping_rect_top_offset
200  unsigned int crop_bottom; ///< frame_cropping_rect_bottom_offset
211  uint32_t time_scale;
213  short offset_for_ref_frame[256]; // FIXME dyn aloc?
223  int cpb_cnt; ///< See H.264 E.1.2
224  int initial_cpb_removal_delay_length; ///< initial_cpb_removal_delay_length_minus1 + 1
225  int cpb_removal_delay_length; ///< cpb_removal_delay_length_minus1 + 1
226  int dpb_output_delay_length; ///< dpb_output_delay_length_minus1 + 1
227  int bit_depth_luma; ///< bit_depth_luma_minus8 + 8
228  int bit_depth_chroma; ///< bit_depth_chroma_minus8 + 8
229  int residual_color_transform_flag; ///< residual_colour_transform_flag
230  int constraint_set_flags; ///< constraint_set[0-3]_flag
231  int new; ///< flag to keep track if the decoder context needs re-init due to changed SPS
232 } SPS;
233 
234 /**
235  * Picture parameter set
236  */
237 typedef struct PPS {
238  unsigned int sps_id;
239  int cabac; ///< entropy_coding_mode_flag
240  int pic_order_present; ///< pic_order_present_flag
241  int slice_group_count; ///< num_slice_groups_minus1 + 1
243  unsigned int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1
244  int weighted_pred; ///< weighted_pred_flag
246  int init_qp; ///< pic_init_qp_minus26 + 26
247  int init_qs; ///< pic_init_qs_minus26 + 26
249  int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag
250  int constrained_intra_pred; ///< constrained_intra_pred_flag
251  int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag
252  int transform_8x8_mode; ///< transform_8x8_mode_flag
255  uint8_t chroma_qp_table[2][QP_MAX_NUM+1]; ///< pre-scaled (with chroma_qp_index_offset) version of qp_table
257 } PPS;
258 
259 /**
260  * Frame Packing Arrangement Type
261  */
262 typedef struct FPA {
264  int frame_packing_arrangement_cancel_flag; ///< is previous arrangement canceled, -1 if never received
269 } FPA;
270 
271 /**
272  * Green MetaData Information Type
273  */
274 typedef struct GreenMetaData {
277  uint16_t num_seconds;
278  uint16_t num_pictures;
285 } GreenMetaData;
286 
287 /**
288  * Memory management control operation opcode.
289  */
290 typedef enum MMCOOpcode {
291  MMCO_END = 0,
298 } MMCOOpcode;
299 
300 /**
301  * Memory management control operation.
302  */
303 typedef struct MMCO {
305  int short_pic_num; ///< pic_num without wrapping (pic_num & max_pic_num)
306  int long_arg; ///< index, pic_num, or num long refs depending on opcode
307 } MMCO;
308 
309 typedef struct H264Picture {
312 
314  int8_t *qscale_table;
315 
317  int16_t (*motion_val[2])[2];
318 
320  uint32_t *mb_type;
321 
323  void *hwaccel_picture_private; ///< hardware accelerator private data
324 
326  int8_t *ref_index[2];
327 
328  int field_poc[2]; ///< top/bottom POC
329  int poc; ///< frame POC
330  int frame_num; ///< frame_num (raw frame_num from slice header)
331  int mmco_reset; /**< MMCO_RESET set this 1. Reordering code must
332  not mix pictures before and after MMCO_RESET. */
333  int pic_id; /**< pic_num (short -> no wrap version of pic_num,
334  pic_num & max_pic_num; long -> long_pic_num) */
335  int long_ref; ///< 1->long term reference 0->short term reference
336  int ref_poc[2][2][32]; ///< POCs of the frames/fields used as reference (FIXME need per slice)
337  int ref_count[2][2]; ///< number of entries in ref_poc (FIXME need per slice)
338  int mbaff; ///< 1 -> MBAFF frame 0-> not MBAFF
339  int field_picture; ///< whether or not picture was encoded in separate fields
340 
342  int recovered; ///< picture at IDR or recovery point + recovery count
345 
346  int crop;
348  int crop_top;
349 } H264Picture;
350 
351 typedef struct H264Ref {
353  int linesize[3];
354 
356  int poc;
357  int pic_id;
358 
360 } H264Ref;
361 
362 typedef struct H264SliceContext {
363  struct H264Context *h264;
366 
369  int slice_type_nos; ///< S free slice type (SI/SP are remapped to I/P)
371 
372  int qscale;
373  int chroma_qp[2]; // QPc
374  int qp_thresh; ///< QP threshold to skip loopfilter
376 
377  // deblock
378  int deblocking_filter; ///< disable_deblocking_filter_idc with 1 <-> 0
381 
382  // Weighted pred stuff
387  int luma_weight_flag[2]; ///< 7.4.3.2 luma_weight_lX_flag
388  int chroma_weight_flag[2]; ///< 7.4.3.2 chroma_weight_lX_flag
389  // The following 2 can be changed to int8_t but that causes 10cpu cycles speedloss
390  int luma_weight[48][2][2];
391  int chroma_weight[48][2][2][2];
392  int implicit_weight[48][48][2];
393 
396 
399 
402 
407 
409  int top_type;
412 
415 
417  unsigned int top_samples_available;
420 
421  ptrdiff_t linesize, uvlinesize;
422  ptrdiff_t mb_linesize; ///< may be equal to s->linesize or s->linesize * 2, for mbaff
423  ptrdiff_t mb_uvlinesize;
424 
425  int mb_x, mb_y;
426  int mb_xy;
429  // index of the first MB of the next slice
433 
435  int mb_mbaff; ///< mb_aff_frame && mb_field_decoding_flag
436 
438 
439  /**
440  * number of neighbors (top and/or left) that used 8x8 dct
441  */
443 
447 
448  int cbp;
449  int top_cbp;
450  int left_cbp;
451 
454  int map_col_to_list0[2][16 + 32];
455  int map_col_to_list0_field[2][2][16 + 32];
456 
457  /**
458  * num_ref_idx_l0/1_active_minus1 + 1
459  */
460  unsigned int ref_count[2]; ///< counts frames or fields, depending on current mb mode
461  unsigned int list_count;
462  H264Ref ref_list[2][48]; /**< 0..15: frame refs, 16..47: mbaff field refs.
463  * Reordered version of default_ref_list
464  * according to picture reordering in slice header */
465  int ref2frm[MAX_SLICES][2][64]; ///< reference to frame number lists, used in the loop filter, the first 2 are for -2,-1
466 
468  int16_t *dc_val_base;
469 
472  uint8_t (*top_borders[2])[(16 * 3) * 2];
476 
477  /**
478  * non zero coeff count cache.
479  * is 64 if not available.
480  */
482 
483  /**
484  * Motion vector cache.
485  */
486  DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2];
487  DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8];
488  DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5 * 8][2];
490 
491  DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4];
492 
493  ///< as a dct coefficient is int32_t in high depth, we need to reserve twice the space.
494  DECLARE_ALIGNED(16, int16_t, mb)[16 * 48 * 2];
495  DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2];
496  ///< as mb is addressed by scantable[i] and scantable is uint8_t we can either
497  ///< check that i is not too large or ensure that there is some unused stuff after mb
498  int16_t mb_padding[256 * 2];
499 
500  uint8_t (*mvd_table[2])[2];
501 
502  /**
503  * Cabac
504  */
508 
509  // rbsp buffer used for this slice
511  unsigned int rbsp_buffer_size;
513 
514 /**
515  * H264Context
516  */
517 typedef struct H264Context {
525 
530 
533 
534  int pixel_shift; ///< 0 for 8-bit H264, 1 for high-bit-depth H264
535 
536  /* coded dimensions -- 16 * mb w/h */
537  int width, height;
539 
540  /**
541  * Backup frame properties: needed, because they can be different
542  * between returned frame and last decoded frame.
543  **/
547 
551 
553  int flags;
555 
558 
560 
561 #define LIST_NOT_USED -1 // FIXME rename?
562 #define PART_NOT_AVAILABLE -2
563 
564  /**
565  * block_offset[ 0..23] for frame macroblocks
566  * block_offset[24..47] for field macroblocks
567  */
568  int block_offset[2 * (16 * 3)];
569 
570  uint32_t *mb2b_xy; // FIXME are these 4 a good idea?
571  uint32_t *mb2br_xy;
572  int b_stride; // FIXME use s->b4_stride
573 
574 
575  unsigned current_sps_id; ///< id of the current SPS
576  SPS sps; ///< current sps
577  PPS pps; ///< current pps
578 
579  int au_pps_id; ///< pps_id of current access unit
580 
581  uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; // FIXME should these be moved down?
582  uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64];
583  uint32_t(*dequant4_coeff[6])[16];
584  uint32_t(*dequant8_coeff[6])[64];
585 
586  uint16_t *slice_table; ///< slice_table_base + 2*mb_stride + 1
587 
588  // interlacing specific flags
592 
593  uint8_t *list_counts; ///< Array of list_count per MB specifying the slice type
594 
595  /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0, 1, 2), 0x0? luma_cbp */
596  uint16_t *cbp_table;
597 
598  /* chroma_pred_mode for i4x4 or i16x16, else 0 */
600  uint8_t (*mvd_table[2])[2];
602 
615 
617 
618  int mb_y;
621  int mb_num;
622 
623  // =============================================================
624  // Things below are not used in the MB or more inner code
625 
628 
629  /**
630  * Used to parse AVC variant of h264
631  */
632  int is_avc; ///< this flag is != 0 if codec is avc1
633  int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
634 
635  int bit_depth_luma; ///< luma bit depth from sps to detect changes
636  int chroma_format_idc; ///< chroma format from sps to detect changes
637 
640 
641  int dequant_coeff_pps; ///< reinit tables when pps changes
642 
643  uint16_t *slice_table_base;
644 
645  // POC stuff
646  int poc_lsb;
647  int poc_msb;
649  int delta_poc[2];
651  int prev_poc_msb; ///< poc_msb of the last reference pic for POC type 0
652  int prev_poc_lsb; ///< poc_lsb of the last reference pic for POC type 0
653  int frame_num_offset; ///< for POC type 2
654  int prev_frame_num_offset; ///< for POC type 2
655  int prev_frame_num; ///< frame_num of the last pic for POC type 1/2
656 
657  /**
658  * frame_num for frames or 2 * frame_num + 1 for field pics.
659  */
661 
662  /**
663  * max_frame_num or 2 * max_frame_num for field pics.
664  */
666 
667  H264Ref default_ref_list[2][32]; ///< base reference list for all slices of a coded picture
674 
675  /**
676  * memory management control operations buffer.
677  */
681 
682  int long_ref_count; ///< number of actual long term references
683  int short_ref_count; ///< number of actual short term references
684 
685  /**
686  * @name Members for slice based multithreading
687  * @{
688  */
689  /**
690  * current slice number, used to initialize slice_num of each thread/context
691  */
693 
694  /**
695  * Max number of threads / contexts.
696  * This is equal to AVCodecContext.thread_count unless
697  * multithreaded decoding is impossible, in which case it is
698  * reduced to 1.
699  */
701 
703 
704  /**
705  * 1 if the single thread fallback warning has already been
706  * displayed, 0 otherwise.
707  */
709 
711 
713  unsigned int last_ref_count[2];
714  /** @} */
715 
716  /**
717  * pic_struct in picture timing SEI message
718  */
720 
721  /**
722  * Complement sei_pic_struct
723  * SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced frames.
724  * However, soft telecined frames may have these values.
725  * This is used in an attempt to flag soft telecine progressive.
726  */
728 
729  /**
730  * frame_packing_arrangment SEI message
731  */
736 
737  /**
738  * display orientation SEI message
739  */
743 
744  /**
745  * User data registered by Rec. ITU-T T.35 SEI
746  */
751 
752  /**
753  * Bit set of clock types for fields/frames in picture timing SEI message.
754  * For each found ct_type, appropriate bit is set (e.g., bit 1 for
755  * interlaced).
756  */
758 
759  /**
760  * dpb_output_delay in picture timing SEI message, see H.264 C.2.2
761  */
763 
764  /**
765  * cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
766  */
768 
769  /**
770  * recovery_frame_cnt from SEI message
771  *
772  * Set to -1 if no recovery point SEI message found or to number of frames
773  * before playback synchronizes. Frames having recovery point are key
774  * frames.
775  */
777 
778  /**
779  * Are the SEI recovery points looking valid.
780  */
782 
784 
785  /**
786  * recovery_frame is the frame_num at which the next frame should
787  * be fully constructed.
788  *
789  * Set to -1 when not expecting a recovery point.
790  */
792 
793 /**
794  * We have seen an IDR, so all the following frames in coded order are correctly
795  * decodable.
796  */
797 #define FRAME_RECOVERED_IDR (1 << 0)
798 /**
799  * Sufficient number of frames have been decoded since a SEI recovery point,
800  * so all the following frames in presentation order are correct.
801  */
802 #define FRAME_RECOVERED_SEI (1 << 1)
803 
804  int frame_recovered; ///< Initial frame has been completely recovered
805 
807 
809 
810 /* for frame threading, this is set to 1
811  * after finish_setup() has been called, so we cannot modify
812  * some context properties (which are supposed to stay constant between
813  * slices) anymore */
815 
816  // Timestamp stuff
817  int sei_buffering_period_present; ///< Buffering period SEI flag
818  int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs
819 
822  int16_t slice_row[MAX_SLICES]; ///< to detect when MAX_SLICES is too low
823 
827 
829 
834 
835  /* Motion Estimation */
838 
839  /*Green Metadata */
841 
842 } H264Context;
843 
844 extern const uint8_t ff_h264_chroma_qp[7][QP_MAX_NUM + 1]; ///< One chroma qp table for each possible bit depth (8-14).
845 extern const uint16_t ff_h264_mb_sizes[4];
846 
847 /**
848  * Decode SEI
849  */
851 
852 /**
853  * Decode SPS
854  */
855 int ff_h264_decode_seq_parameter_set(H264Context *h, int ignore_truncation);
856 
857 /**
858  * compute profile from sps
859  */
860 int ff_h264_get_profile(SPS *sps);
861 
862 /**
863  * Decode PPS
864  */
866 
867 /**
868  * Decode a network abstraction layer unit.
869  * @param consumed is the number of bytes used as input
870  * @param length is the length of the array
871  * @param dst_length is the number of decoded bytes FIXME here
872  * or a decode rbsp tailing?
873  * @return decoded bytes, might be src+1 if no escapes
874  */
876  int *dst_length, int *consumed, int length);
877 
878 /**
879  * Free any data that may have been allocated in the H264 context
880  * like SPS, PPS etc.
881  */
883 
884 /**
885  * Reconstruct bitstream slice_type.
886  */
888 
889 /**
890  * Allocate tables.
891  * needs width/height
892  */
894 
895 /**
896  * Fill the default_ref_list.
897  */
899 
903 
904 /**
905  * Execute the reference picture marking (memory management control operations).
906  */
907 int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count);
908 
910  int first_slice);
911 
912 int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice);
913 
914 /**
915  * Check if the top & left blocks are available if needed & change the
916  * dc mode so it only uses the available blocks.
917  */
919 
920 /**
921  * Check if the top & left blocks are available if needed & change the
922  * dc mode so it only uses the available blocks.
923  */
925  int mode, int is_chroma);
926 
930 void ff_h264_decode_init_vlc(void);
931 
932 /**
933  * Decode a macroblock
934  * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
935  */
937 
938 /**
939  * Decode a CABAC coded macroblock
940  * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
941  */
943 
945 
947 
951  int *mb_type);
952 
953 void ff_h264_filter_mb_fast(const H264Context *h, H264SliceContext *sl, int mb_x, int mb_y,
954  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
955  unsigned int linesize, unsigned int uvlinesize);
956 void ff_h264_filter_mb(const H264Context *h, H264SliceContext *sl, int mb_x, int mb_y,
957  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
958  unsigned int linesize, unsigned int uvlinesize);
959 
960 /**
961  * Reset SEI values at the beginning of the frame.
962  *
963  * @param h H.264 context.
964  */
966 
967 /**
968  * Get stereo_mode string from the h264 frame_packing_arrangement
969  * @param h H.264 context.
970  */
972 
973 /*
974  * o-o o-o
975  * / / /
976  * o-o o-o
977  * ,---'
978  * o-o o-o
979  * / / /
980  * o-o o-o
981  */
982 
983 /* Scan8 organization:
984  * 0 1 2 3 4 5 6 7
985  * 0 DY y y y y y
986  * 1 y Y Y Y Y
987  * 2 y Y Y Y Y
988  * 3 y Y Y Y Y
989  * 4 y Y Y Y Y
990  * 5 DU u u u u u
991  * 6 u U U U U
992  * 7 u U U U U
993  * 8 u U U U U
994  * 9 u U U U U
995  * 10 DV v v v v v
996  * 11 v V V V V
997  * 12 v V V V V
998  * 13 v V V V V
999  * 14 v V V V V
1000  * DY/DU/DV are for luma/chroma DC.
1001  */
1002 
1003 #define LUMA_DC_BLOCK_INDEX 48
1004 #define CHROMA_DC_BLOCK_INDEX 49
1005 
1006 // This table must be here because scan8[constant] must be known at compiletime
1007 static const uint8_t scan8[16 * 3 + 3] = {
1008  4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8,
1009  6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8,
1010  4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8,
1011  6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8,
1012  4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8,
1013  6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8,
1014  4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8,
1015  6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8,
1016  4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8,
1017  6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8,
1018  4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8,
1019  6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8,
1020  0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8
1021 };
1022 
1023 static av_always_inline uint32_t pack16to32(unsigned a, unsigned b)
1024 {
1025 #if HAVE_BIGENDIAN
1026  return (b & 0xFFFF) + (a << 16);
1027 #else
1028  return (a & 0xFFFF) + (b << 16);
1029 #endif
1030 }
1031 
1032 static av_always_inline uint16_t pack8to16(unsigned a, unsigned b)
1033 {
1034 #if HAVE_BIGENDIAN
1035  return (b & 0xFF) + (a << 8);
1036 #else
1037  return (a & 0xFF) + (b << 8);
1038 #endif
1039 }
1040 
1041 /**
1042  * Get the chroma qp.
1043  */
1044 static av_always_inline int get_chroma_qp(const H264Context *h, int t, int qscale)
1045 {
1046  return h->pps.chroma_qp_table[t][qscale];
1047 }
1048 
1049 /**
1050  * Get the predicted intra4x4 prediction mode.
1051  */
1053  H264SliceContext *sl, int n)
1054 {
1055  const int index8 = scan8[n];
1056  const int left = sl->intra4x4_pred_mode_cache[index8 - 1];
1057  const int top = sl->intra4x4_pred_mode_cache[index8 - 8];
1058  const int min = FFMIN(left, top);
1059 
1060  ff_tlog(h->avctx, "mode:%d %d min:%d\n", left, top, min);
1061 
1062  if (min < 0)
1063  return DC_PRED;
1064  else
1065  return min;
1066 }
1067 
1069  H264SliceContext *sl)
1070 {
1071  int8_t *i4x4 = sl->intra4x4_pred_mode + h->mb2br_xy[sl->mb_xy];
1072  int8_t *i4x4_cache = sl->intra4x4_pred_mode_cache;
1073 
1074  AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
1075  i4x4[4] = i4x4_cache[7 + 8 * 3];
1076  i4x4[5] = i4x4_cache[7 + 8 * 2];
1077  i4x4[6] = i4x4_cache[7 + 8 * 1];
1078 }
1079 
1081  H264SliceContext *sl)
1082 {
1083  const int mb_xy = sl->mb_xy;
1084  uint8_t *nnz = h->non_zero_count[mb_xy];
1085  uint8_t *nnz_cache = sl->non_zero_count_cache;
1086 
1087  AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]);
1088  AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]);
1089  AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]);
1090  AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]);
1091  AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]);
1092  AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]);
1093  AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]);
1094  AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]);
1095 
1096  if (!h->chroma_y_shift) {
1097  AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]);
1098  AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]);
1099  AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]);
1100  AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]);
1101  }
1102 }
1103 
1105  H264SliceContext *sl,
1106  int b_stride,
1107  int b_xy, int b8_xy,
1108  int mb_type, int list)
1109 {
1110  int16_t(*mv_dst)[2] = &h->cur_pic.motion_val[list][b_xy];
1111  int16_t(*mv_src)[2] = &sl->mv_cache[list][scan8[0]];
1112  AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0);
1113  AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1);
1114  AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2);
1115  AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3);
1116  if (CABAC(h)) {
1117  uint8_t (*mvd_dst)[2] = &sl->mvd_table[list][FMO ? 8 * sl->mb_xy
1118  : h->mb2br_xy[sl->mb_xy]];
1119  uint8_t(*mvd_src)[2] = &sl->mvd_cache[list][scan8[0]];
1120  if (IS_SKIP(mb_type)) {
1121  AV_ZERO128(mvd_dst);
1122  } else {
1123  AV_COPY64(mvd_dst, mvd_src + 8 * 3);
1124  AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0);
1125  AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1);
1126  AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2);
1127  }
1128  }
1129 
1130  {
1131  int8_t *ref_index = &h->cur_pic.ref_index[list][b8_xy];
1132  int8_t *ref_cache = sl->ref_cache[list];
1133  ref_index[0 + 0 * 2] = ref_cache[scan8[0]];
1134  ref_index[1 + 0 * 2] = ref_cache[scan8[4]];
1135  ref_index[0 + 1 * 2] = ref_cache[scan8[8]];
1136  ref_index[1 + 1 * 2] = ref_cache[scan8[12]];
1137  }
1138 }
1139 
1141  H264SliceContext *sl,
1142  int mb_type)
1143 {
1144  const int b_stride = h->b_stride;
1145  const int b_xy = 4 * sl->mb_x + 4 * sl->mb_y * h->b_stride; // try mb2b(8)_xy
1146  const int b8_xy = 4 * sl->mb_xy;
1147 
1148  if (USES_LIST(mb_type, 0)) {
1149  write_back_motion_list(h, sl, b_stride, b_xy, b8_xy, mb_type, 0);
1150  } else {
1151  fill_rectangle(&h->cur_pic.ref_index[0][b8_xy],
1152  2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
1153  }
1154  if (USES_LIST(mb_type, 1))
1155  write_back_motion_list(h, sl, b_stride, b_xy, b8_xy, mb_type, 1);
1156 
1157  if (sl->slice_type_nos == AV_PICTURE_TYPE_B && CABAC(h)) {
1158  if (IS_8X8(mb_type)) {
1159  uint8_t *direct_table = &h->direct_table[4 * sl->mb_xy];
1160  direct_table[1] = sl->sub_mb_type[1] >> 1;
1161  direct_table[2] = sl->sub_mb_type[2] >> 1;
1162  direct_table[3] = sl->sub_mb_type[3] >> 1;
1163  }
1164  }
1165 }
1166 
1168 {
1170  return !(AV_RN64A(sl->sub_mb_type) &
1172  0x0001000100010001ULL));
1173  else
1174  return !(AV_RN64A(sl->sub_mb_type) &
1176  0x0001000100010001ULL));
1177 }
1178 
1179 static inline int find_start_code(const uint8_t *buf, int buf_size,
1180  int buf_index, int next_avc)
1181 {
1182  uint32_t state = -1;
1183 
1184  buf_index = avpriv_find_start_code(buf + buf_index, buf + next_avc + 1, &state) - buf - 1;
1185 
1186  return FFMIN(buf_index, buf_size);
1187 }
1188 
1189 static inline int get_avc_nalsize(H264Context *h, const uint8_t *buf,
1190  int buf_size, int *buf_index)
1191 {
1192  int i, nalsize = 0;
1193 
1194  if (*buf_index >= buf_size - h->nal_length_size) {
1195  // the end of the buffer is reached, refill it.
1196  return AVERROR(EAGAIN);
1197  }
1198 
1199  for (i = 0; i < h->nal_length_size; i++)
1200  nalsize = ((unsigned)nalsize << 8) | buf[(*buf_index)++];
1201  if (nalsize <= 0 || nalsize > buf_size - *buf_index) {
1203  "AVC: nal size %d\n", nalsize);
1204  return AVERROR_INVALIDDATA;
1205  }
1206  return nalsize;
1207 }
1208 
1209 int ff_h264_field_end(H264Context *h, H264SliceContext *sl, int in_setup);
1210 
1213 
1215 
1216 void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height);
1217 int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc);
1220 
1222 #define SLICE_SINGLETHREAD 1
1223 #define SLICE_SKIPED 2
1224 
1225 int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count);
1227  const AVCodecContext *src);
1228 
1230 
1232 
1234 
1235 #endif /* AVCODEC_H264_H */
registered user data as specified by Rec. ITU-T T.35
Definition: h264.h:135
int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc)
Definition: h264.c:1133
int chroma_format_idc
Definition: h264.h:178
struct H264Context * h264
Definition: h264.h:363
int video_signal_type_present_flag
Definition: h264.h:203
int last_slice_type
Definition: h264.h:712
const uint8_t * left_block
Definition: h264.h:413
#define ff_tlog(ctx,...)
Definition: internal.h:54
void ff_h264_unref_picture(H264Context *h, H264Picture *pic)
Definition: h264_picture.c:47
Memory management control operation.
Definition: h264.h:303
int workaround_bugs
Definition: h264.h:554
int long_ref
1->long term reference 0->short term reference
Definition: h264.h:335
#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:708
uint8_t percent_alpha_point_deblocking_instance
Definition: h264.h:282
int col_parity
Definition: h264.h:445
GetBitContext gb
Definition: h264.h:524
int sei_recovery_frame_cnt
Definition: h264.h:344
int ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
Init context Allocate buffers which are not shared amongst multiple threads.
Definition: h264.c:459
enum AVPixelFormat backup_pix_fmt
Definition: h264.h:546
int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count)
Call decode_slice() for each context.
Definition: h264_slice.c:2534
int16_t mb[16 *48 *2]
Definition: h264.h:494
5: top field, bottom field, top field repeated, in that order
Definition: h264.h:152
int topright_mb_xy
Definition: h264.h:405
int sei_cpb_removal_delay
cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
Definition: h264.h:767
int low_delay
Definition: h264.h:550
int mb_num
Definition: h264.h:621
int ff_h264_decode_ref_pic_list_reordering(H264Context *h, H264SliceContext *sl)
Definition: h264_refs.c:236
This structure describes decoded (raw) audio or video data.
Definition: frame.h:171
int mb_aff_frame
Definition: h264.h:589
int topleft_partition
Definition: h264.h:414
uint8_t parse_history[6]
Definition: h264.h:824
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
Definition: h264.h:486
int delta_poc[2]
Definition: h264.h:649
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:442
int dist_scale_factor[32]
Definition: h264.h:452
#define LEFT_MBS
Definition: h264.h:75
int luma_weight[48][2][2]
Definition: h264.h:390
int quincunx_subsampling
Definition: h264.h:735
int edge_emu_buffer_allocated
Definition: h264.h:474
int a53_caption_size
Definition: h264.h:749
3: top field, bottom field, in that order
Definition: h264.h:150
#define H264_MAX_PICTURE_COUNT
Definition: h264.h:46
int first_field
Definition: h264.h:591
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:613
unregistered user data
Definition: h264.h:136
int weighted_bipred_idc
Definition: h264.h:245
int left_mb_xy[LEFT_MBS]
Definition: h264.h:406
int chroma_qp_index_offset[2]
Definition: h264.h:248
unsigned int topleft_samples_available
Definition: h264.h:416
H264ChromaContext h264chroma
Definition: h264.h:522
uint16_t * cbp_table
Definition: h264.h:596
int scaling_matrix_present
Definition: h264.h:216
MMCO mmco[MAX_MMCO_COUNT]
memory management control operations buffer.
Definition: h264.h:678
uint8_t scaling_matrix4[6][16]
Definition: h264.h:217
uint8_t mvd_cache[2][5 *8][2]
Definition: h264.h:488
7: frame doubling
Definition: h264.h:154
#define MAX_PPS_COUNT
Definition: h264.h:50
Sequence parameter set.
Definition: h264.h:174
int initial_cpb_removal_delay[32]
Initial timestamps for CPBs.
Definition: h264.h:818
int mb_y
Definition: h264.h:618
int coded_picture_number
Definition: h264.h:549
int bitstream_restriction_flag
Definition: h264.h:214
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:243
#define FMO
Definition: h264.h:62
AVBufferRef * mb_type_buf
Definition: h264.h:319
int bipred_scratchpad_allocated
Definition: h264.h:473
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:831
int chroma_x_shift
Definition: h264.h:538
qpel_mc_func(* qpel_put)[16]
Definition: h264.h:836
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:237
int prev_mb_skipped
Definition: h264.h:394
int crop
Definition: h264.h:346
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:53
int16_t(*[2] motion_val)[2]
Definition: h264.h:317
int flags
Definition: h264.h:553
int frame_mbs_only_flag
Definition: h264.h:191
int mb_height
Definition: h264.h:619
H264Picture * delayed_pic[MAX_DELAYED_PIC_COUNT+2]
Definition: h264.h:670
int is_avc
Used to parse AVC variant of h264.
Definition: h264.h:632
int mmco_index
Definition: h264.h:679
AVBufferPool * ref_index_pool
Definition: h264.h:833
MMCOOpcode
Memory management control operation opcode.
Definition: h264.h:290
uint8_t zigzag_scan8x8_cavlc[64]
Definition: h264.h:605
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:430
uint32_t dequant8_buffer[6][QP_MAX_NUM+1][64]
Definition: h264.h:582
int sei_reguserdata_afd_present
User data registered by Rec.
Definition: h264.h:747
void ff_h264_decode_init_vlc(void)
Definition: h264_cavlc.c:327
H264Context.
Definition: h264.h:517
int16_t mb_padding[256 *2]
Definition: h264.h:498
static av_always_inline void write_back_motion(const H264Context *h, H264SliceContext *sl, int mb_type)
Definition: h264.h:1140
AVFrame * f
Definition: h264.h:310
static av_always_inline void write_back_non_zero_count(const H264Context *h, H264SliceContext *sl)
Definition: h264.h:1080
int prev_poc_msb
poc_msb of the last reference pic for POC type 0
Definition: h264.h:651
int chroma_qp_diff
Definition: h264.h:256
int frame_packing_arrangement_repetition_period
Definition: h264.h:266
uint32_t num_units_in_tick
Definition: h264.h:210
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:151
H264Picture * long_ref[32]
Definition: h264.h:669
int picture_structure
Definition: h264.h:590
Definition: h264.h:117
H264Ref default_ref_list[2][32]
base reference list for all slices of a coded picture
Definition: h264.h:667
#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:387
int profile_idc
Definition: h264.h:176
int frame_packing_arrangement_id
Definition: h264.h:263
unsigned current_sps_id
id of the current SPS
Definition: h264.h:575
MMCOOpcode opcode
Definition: h264.h:304
AVColorTransferCharacteristic
Color Transfer Characteristic.
Definition: pixfmt.h:494
H.264 DSP functions.
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:460
Definition: h264.h:118
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:1906
int topleft_mb_xy
Definition: h264.h:403
uint8_t * chroma_pred_mode_table
Definition: h264.h:599
int setup_finished
Definition: h264.h:814
uint8_t percent_six_tap_filtering
Definition: h264.h:281
void ff_h264_pred_direct_motion(const H264Context *const h, H264SliceContext *sl, int *mb_type)
Definition: h264_direct.c:702
unsigned int crop_top
frame_cropping_rect_top_offset
Definition: h264.h:199
#define USES_LIST(a, list)
Definition: mpegutils.h:95
int fixed_frame_rate_flag
Definition: h264.h:212
static av_always_inline uint16_t pack8to16(unsigned a, unsigned b)
Definition: h264.h:1032
int is_complex
Definition: h264.h:432
uint8_t scaling_matrix4[6][16]
Definition: h264.h:253
Definition: h264.h:119
int parse_history_count
Definition: h264.h:825
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
Definition: h264.h:249
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:491
int short_pic_num
pic_num without wrapping (pic_num & max_pic_num)
Definition: h264.h:305
Definition: h264.h:351
uint32_t(*[6] dequant4_coeff)[16]
Definition: h264.h:583
uint8_t * a53_caption
Definition: h264.h:750
uint8_t
int prev_frame_num_offset
for POC type 2
Definition: h264.h:654
SEI_FpaType frame_packing_arrangement_type
Definition: h264.h:265
int full_range
Definition: h264.h:204
unsigned int crop_left
frame_cropping_rect_left_offset
Definition: h264.h:197
int offset_for_non_ref_pic
Definition: h264.h:184
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:184
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:188
int slice_alpha_c0_offset
Definition: h264.h:379
int poc
Definition: h264.h:356
int field_picture
whether or not picture was encoded in separate fields
Definition: h264.h:339
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
Definition: h264.h:228
AVColorSpace
YUV colorspace type.
Definition: pixfmt.h:517
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
Definition: h264.c:398
enum AVColorPrimaries color_primaries
Definition: h264.h:206
int poc
frame POC
Definition: h264.h:329
void ff_h264_direct_dist_scale_factor(const H264Context *const h, H264SliceContext *sl)
Definition: h264_direct.c:51
int slice_type
Definition: h264.h:368
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:137
int cabac
entropy_coding_mode_flag
Definition: h264.h:239
static int find_start_code(const uint8_t *buf, int buf_size, int buf_index, int next_avc)
Definition: h264.h:1179
unsigned int crop_right
frame_cropping_rect_right_offset
Definition: h264.h:198
SEI_PicStructType
pic_struct in picture timing SEI message
Definition: h264.h:146
unsigned int last_ref_count[2]
Definition: h264.h:713
uint8_t(*[2] top_borders)[(16 *3)*2]
Definition: h264.h:472
int invalid_gap
Definition: h264.h:343
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:804
int map_col_to_list0_field[2][2][16+32]
Definition: h264.h:455
int height
Definition: h264.h:537
static av_always_inline int pred_intra_mode(const H264Context *h, H264SliceContext *sl, int n)
Get the predicted intra4x4 prediction mode.
Definition: h264.h:1052
int transform_bypass
qpprime_y_zero_transform_bypass_flag
Definition: h264.h:179
qpel_mc_func(* qpel_avg)[16]
Definition: h264.h:837
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
Definition: h264.h:251
bitstream reader API header.
int chroma_y_shift
Definition: h264.h:538
#define MAX_DELAYED_PIC_COUNT
Definition: h264.h:54
static void fill_rectangle(SDL_Surface *screen, int x, int y, int w, int h, int color, int update)
Definition: ffplay.c:785
ptrdiff_t size
Definition: opengl_enc.c:101
AVBufferRef * qscale_table_buf
Definition: h264.h:313
SEI_Type
SEI message types.
Definition: h264.h:132
H264Picture * parent
Definition: h264.h:359
int ff_h264_decode_mb_cabac(const H264Context *h, H264SliceContext *sl)
Decode a CABAC coded macroblock.
Definition: h264_cabac.c:1911
AVColorPrimaries
Chromaticity coordinates of the source primaries.
Definition: pixfmt.h:476
int recovered
picture at IDR or recovery point + recovery count
Definition: h264.h:342
#define AV_COPY64(d, s)
Definition: intreadwrite.h:590
int ff_h264_fill_default_ref_list(H264Context *h, H264SliceContext *sl)
Fill the default_ref_list.
Definition: h264_refs.c:125
int chroma_qp[2]
Definition: h264.h:373
#define av_log(a,...)
uint8_t period_type
Definition: h264.h:276
int sei_vflip
Definition: h264.h:742
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:427
unsigned int rbsp_buffer_size
Definition: h264.h:511
int last_pocs[MAX_DELAYED_PIC_COUNT]
Definition: h264.h:671
int width
Definition: h264.h:537
#define MAX_SLICES
The maximum number of slices supported by the decoder.
Definition: h264.h:68
int slice_num
Definition: h264.h:367
int frame_num
Definition: h264.h:650
unsigned int topright_samples_available
Definition: h264.h:418
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:207
int mb_aff
mb_adaptive_frame_field_flag
Definition: h264.h:192
H264PredContext hpc
Definition: h264.h:557
#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:1167
int16_t * dc_val_base
Definition: h264.h:468
int poc_type
pic_order_cnt_type
Definition: h264.h:181
int context_initialized
Definition: h264.h:552
static av_always_inline void write_back_intra_pred_mode(const H264Context *h, H264SliceContext *sl)
Definition: h264.h:1068
int constrained_intra_pred
constrained_intra_pred_flag
Definition: h264.h:250
ERContext er
Definition: h264.h:365
int nal_unit_type
Definition: h264.h:627
Definition: h264.h:115
int num_reorder_frames
Definition: h264.h:215
#define AVERROR(e)
Definition: error.h:43
void * hwaccel_picture_private
hardware accelerator private data
Definition: h264.h:323
int backup_height
Definition: h264.h:545
int map_col_to_list0[2][16+32]
Definition: h264.h:454
int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size)
Definition: h264.c:527
int time_offset_length
Definition: h264.h:222
int8_t intra4x4_pred_mode_cache[5 *8]
Definition: h264.h:400
int backup_width
Backup frame properties: needed, because they can be different between returned frame and last decode...
Definition: h264.h:544
SEI_FpaType
frame_packing_arrangement types
Definition: h264.h:161
int parse_last_mb
Definition: h264.h:826
PPS pps
current pps
Definition: h264.h:577
int deblocking_filter
disable_deblocking_filter_idc with 1 <-> 0
Definition: h264.h:378
uint8_t(*[2] mvd_table)[2]
Definition: h264.h:600
int prev_interlaced_frame
Complement sei_pic_struct SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced...
Definition: h264.h:727
int ref_poc[2][2][32]
POCs of the frames/fields used as reference (FIXME need per slice)
Definition: h264.h:336
ThreadFrame tf
Definition: h264.h:311
0: frame
Definition: h264.h:147
int weighted_pred
weighted_pred_flag
Definition: h264.h:244
GLsizei GLsizei * length
Definition: opengl_enc.c:115
#define IS_SKIP(a)
Definition: mpegutils.h:77
H264QpelContext h264qpel
Definition: h264.h:523
int direct_spatial_mv_pred
Definition: h264.h:444
#define CABAC(h)
Definition: h264.h:94
uint16_t num_pictures
Definition: h264.h:278
unsigned int top_samples_available
Definition: h264.h:417
int frame_num
frame_num (raw frame_num from slice header)
Definition: h264.h:330
static av_always_inline uint32_t pack16to32(unsigned a, unsigned b)
Definition: h264.h:1023
int valid_recovery_point
Are the SEI recovery points looking valid.
Definition: h264.h:781
int residual_color_transform_flag
residual_colour_transform_flag
Definition: h264.h:229
uint8_t * list_counts
Array of list_count per MB specifying the slice type.
Definition: h264.h:593
int delta_pic_order_always_zero_flag
Definition: h264.h:183
GreenMetaData sei_green_metadata
Definition: h264.h:840
int offset_for_top_to_bottom_field
Definition: h264.h:185
int slice_type_nos
S free slice type (SI/SP are remapped to I/P)
Definition: h264.h:369
int ff_h264_decode_slice_header(H264Context *h, H264SliceContext *sl)
Decode a slice header.
Definition: h264_slice.c:1151
uint8_t zigzag_scan8x8[64]
Definition: h264.h:604
int mb_skip_run
Definition: h264.h:431
AVBufferRef * hwaccel_priv_buf
Definition: h264.h:322
static const uint8_t scan8[16 *3+3]
Definition: h264.h:1007
const uint16_t ff_h264_mb_sizes[4]
Definition: h264.c:54
int crop_left
Definition: h264.h:347
uint8_t cabac_state[1024]
Definition: h264.h:506
int crop
frame_cropping_flag
Definition: h264.h:194
int ff_h264_decode_init(AVCodecContext *avctx)
Definition: h264.c:647
int pic_id
Definition: h264.h:357
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:495
int content_interpretation_type
Definition: h264.h:267
uint8_t * direct_table
Definition: h264.h:601
int use_weight
Definition: h264.h:383
uint8_t scaling_matrix8[6][64]
Definition: h264.h:254
int nal_length_size
Number of bytes used for nal length (1, 2 or 4)
Definition: h264.h:633
useful rectangle filling function
AVBufferRef * motion_val_buf[2]
Definition: h264.h:316
int sei_anticlockwise_rotation
Definition: h264.h:741
Context for storing H.264 DSP functions.
Definition: h264dsp.h:41
int ref_frame_count
num_ref_frames
Definition: h264.h:187
Definition: h264.h:114
int frame_num_offset
for POC type 2
Definition: h264.h:653
int chroma_pred_mode
Definition: h264.h:397
#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:224
FPA sei_fpa
Definition: h264.h:783
int x264_build
Definition: h264.h:616
uint32_t * mb2br_xy
Definition: h264.h:571
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:226
#define MB_TYPE_DIRECT2
Definition: avcodec.h:1149
#define FFMIN(a, b)
Definition: common.h:81
uint16_t * slice_table
slice_table_base + 2*mb_stride + 1
Definition: h264.h:586
uint8_t field_scan8x8_cavlc[64]
Definition: h264.h:608
float y
int poc_cycle_length
num_ref_frames_in_pic_order_cnt_cycle
Definition: h264.h:186
CABACContext cabac
Cabac.
Definition: h264.h:505
int colour_description_present_flag
Definition: h264.h:205
int reference
Definition: h264.h:341
AVRational sar
Definition: h264.h:202
int sei_frame_packing_present
frame_packing_arrangment SEI message
Definition: h264.h:732
int redundant_pic_count
Definition: h264.h:437
int nb_slice_ctx
Definition: h264.h:532
int long_ref_count
number of actual long term references
Definition: h264.h:682
uint32_t * mb_type
Definition: h264.h:320
int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src)
Definition: h264_picture.c:68
int top_mb_xy
Definition: h264.h:404
SPS sps
current sps
Definition: h264.h:576
static struct @197 state
int next_mb_skipped
Definition: h264.h:395
uint8_t percent_non_zero_macroblocks
Definition: h264.h:279
PPS * pps_buffers[MAX_PPS_COUNT]
Definition: h264.h:639
int sei_hflip
Definition: h264.h:742
#define MAX_SPS_COUNT
Definition: h264.h:49
uint8_t chroma_qp_table[2][QP_MAX_NUM+1]
pre-scaled (with chroma_qp_index_offset) version of qp_table
Definition: h264.h:255
int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length)
Decode PPS.
Definition: h264_ps.c:589
void ff_h264_free_tables(H264Context *h)
Definition: h264.c:355
int init_qp
pic_init_qp_minus26 + 26
Definition: h264.h:246
int mmco_reset
Definition: h264.h:680
H264SliceContext * slice_ctx
Definition: h264.h:531
int direct_8x8_inference_flag
Definition: h264.h:193
int n
Definition: avisynth_c.h:547
int poc_lsb
Definition: h264.h:646
int reference
Definition: h264.h:355
int max_pic_num
max_frame_num or 2 * max_frame_num for field pics.
Definition: h264.h:665
int top_borders_allocated[2]
Definition: h264.h:475
int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice)
Definition: h264_refs.c:584
uint8_t scaling_matrix8[6][64]
Definition: h264.h:218
frame packing arrangement
Definition: h264.h:138
uint8_t active_format_description
Definition: h264.h:748
int curr_pic_num
frame_num for frames or 2 * frame_num + 1 for field pics.
Definition: h264.h:660
int chroma_log2_weight_denom
Definition: h264.h:386
uint32_t dequant4_buffer[6][QP_MAX_NUM+1][16]
Definition: h264.h:581
void ff_h264_init_cabac_states(const H264Context *h, H264SliceContext *sl)
Definition: h264_cabac.c:1264
unsigned int sps_id
Definition: h264.h:175
uint8_t * edge_emu_buffer
Definition: h264.h:471
int ff_h264_get_slice_type(const H264SliceContext *sl)
Reconstruct bitstream slice_type.
Definition: h264_slice.c:1953
int top_type
Definition: h264.h:409
int dequant_coeff_pps
reinit tables when pps changes
Definition: h264.h:641
int pic_order_present
pic_order_present_flag
Definition: h264.h:240
SPS * sps_buffers[MAX_SPS_COUNT]
Definition: h264.h:638
uint8_t zigzag_scan_q0[16]
Definition: h264.h:609
int bit_depth_luma
luma bit depth from sps to detect changes
Definition: h264.h:635
int topleft_type
Definition: h264.h:408
short offset_for_ref_frame[256]
Definition: h264.h:213
int chroma_format_idc
chroma format from sps to detect changes
Definition: h264.h:636
VideoDSPContext vdsp
Definition: h264.h:520
int intra16x16_pred_mode
Definition: h264.h:398
int timing_info_present_flag
Definition: h264.h:209
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:616
int mb_stride
Definition: h264.h:620
int vcl_hrd_parameters_present_flag
Definition: h264.h:220
AVCodecContext * avctx
Definition: h264.h:519
uint8_t zigzag_scan8x8_q0[64]
Definition: h264.h:610
AVS_Value src
Definition: avisynth_c.h:482
#define MB_TYPE_8x16
Definition: avcodec.h:1146
int last_qscale_diff
Definition: h264.h:375
1: top field
Definition: h264.h:148
void ff_h264_remove_all_refs(H264Context *h)
Definition: h264_refs.c:507
int prev_frame_num
frame_num of the last pic for POC type 1/2
Definition: h264.h:655
H264Picture * short_ref[32]
Definition: h264.h:668
int next_outputed_poc
Definition: h264.h:673
int ff_h264_decode_sei(H264Context *h)
Decode SEI.
Definition: h264_sei.c:419
int poc_msb
Definition: h264.h:647
int field_poc[2]
top/bottom POC
Definition: h264.h:328
int recovery_frame
recovery_frame is the frame_num at which the next frame should be fully constructed.
Definition: h264.h:791
int max_contexts
Max number of threads / contexts.
Definition: h264.h:700
main external API structure.
Definition: avcodec.h:1502
int qp_thresh
QP threshold to skip loopfilter.
Definition: h264.h:374
int dpb_output_delay_length
dpb_output_delay_length_minus1 + 1
Definition: h264.h:226
Definition: h264.h:291
int vui_parameters_present_flag
Definition: h264.h:201
2: bottom field
Definition: h264.h:149
#define QP_MAX_NUM
Definition: h264.h:108
uint8_t green_metadata_type
Definition: h264.h:275
void * buf
Definition: avisynth_c.h:553
int resync_mb_y
Definition: h264.h:428
int frame_packing_arrangement_type
Definition: h264.h:733
int8_t * qscale_table
Definition: h264.h:314
int constraint_set_flags
constraint_set[0-3]_flag
Definition: h264.h:230
SEI_PicStructType sei_pic_struct
pic_struct in picture timing SEI message
Definition: h264.h:719
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:1104
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:1189
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:481
uint32_t(*[6] dequant8_coeff)[64]
Definition: h264.h:584
Definition: h264.h:120
rational number numerator/denominator
Definition: rational.h:43
int8_t * ref_index[2]
Definition: h264.h:326
#define MAX_MMCO_COUNT
Definition: h264.h:52
int use_weight_chroma
Definition: h264.h:384
int pixel_shift
0 for 8-bit H264, 1 for high-bit-depth H264
Definition: h264.h:534
int mmco_reset
MMCO_RESET set this 1.
Definition: h264.h:331
int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb, int first_slice)
Definition: h264_refs.c:825
H264Picture * cur_pic_ptr
Definition: h264.h:527
ptrdiff_t mb_uvlinesize
Definition: h264.h:423
int mb_mbaff
mb_aff_frame && mb_field_decoding_flag
Definition: h264.h:435
uint8_t direct_cache[5 *8]
Definition: h264.h:489
AVPictureType
Definition: avutil.h:264
int enable_er
Definition: h264.h:828
display orientation
Definition: h264.h:139
unsigned int sps_id
Definition: h264.h:238
int frame_packing_arrangement_cancel_flag
is previous arrangement canceled, -1 if never received
Definition: h264.h:264
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
Definition: h264.h:182
uint8_t percent_intra_coded_macroblocks
Definition: h264.h:280
6: bottom field, top field, bottom field repeated, in that order
Definition: h264.h:153
int sei_buffering_period_present
Buffering period SEI flag.
Definition: h264.h:817
ptrdiff_t mb_linesize
may be equal to s->linesize or s->linesize * 2, for mbaff
Definition: h264.h:422
int16_t slice_row[MAX_SLICES]
to detect when MAX_SLICES is too low
Definition: h264.h:822
int col_fieldoff
Definition: h264.h:446
ptrdiff_t linesize
Definition: h264.h:421
int block_offset[2 *(16 *3)]
block_offset[ 0..23] for frame macroblocks block_offset[24..47] for field macroblocks ...
Definition: h264.h:568
int quincunx_sampling_flag
Definition: h264.h:268
uint32_t time_scale
Definition: h264.h:211
int linesize[3]
Definition: h264.h:353
int transform_8x8_mode
transform_8x8_mode_flag
Definition: h264.h:252
ptrdiff_t uvlinesize
Definition: h264.h:421
H.264 / AVC / MPEG4 prediction functions.
int pic_struct_present_flag
Definition: h264.h:221
uint8_t zigzag_scan[16]
Definition: h264.h:603
unsigned int list_count
Definition: h264.h:461
picture timing
Definition: h264.h:134
Definition: vp9.h:48
#define AV_ZERO128(d)
Definition: intreadwrite.h:622
uint16_t xsd_metric_value
Definition: h264.h:284
int ff_set_ref_count(H264Context *h, H264SliceContext *sl)
Definition: h264.c:1238
int has_recovery_point
Definition: h264.h:806
uint16_t num_seconds
Definition: h264.h:277
int left_type[LEFT_MBS]
Definition: h264.h:411
int mbaff
1 -> MBAFF frame 0-> not MBAFF
Definition: h264.h:338
A reference to a data buffer.
Definition: buffer.h:81
void ff_h264_flush_change(H264Context *h)
Definition: h264.c:1084
int ff_h264_decode_seq_parameter_set(H264Context *h, int ignore_truncation)
Decode SPS.
Definition: h264_ps.c:303
AVBufferPool * qscale_table_pool
Definition: h264.h:830
H264Picture * next_output_pic
Definition: h264.h:672
int slice_context_count
Definition: h264.h:702
AVBufferPool * motion_val_pool
Definition: h264.h:832
int mb_height
pic_height_in_map_units_minus1 + 1
Definition: h264.h:190
int topright_type
Definition: h264.h:410
int init_qs
pic_init_qs_minus26 + 26
Definition: h264.h:247
int pic_id
pic_num (short -> no wrap version of pic_num, pic_num & max_pic_num; long -> long_pic_num) ...
Definition: h264.h:333
uint8_t xsd_metric_type
Definition: h264.h:283
common internal api header.
#define AV_COPY128(d, s)
Definition: intreadwrite.h:594
int nal_hrd_parameters_present_flag
Definition: h264.h:219
uint16_t * slice_table_base
Definition: h264.h:643
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
Definition: h264.h:180
int missing_fields
Definition: h264.h:808
#define MB_TYPE_8x8
Definition: avcodec.h:1147
int ff_pred_weight_table(H264Context *h, H264SliceContext *sl)
Definition: h264.c:996
void ff_h264_fill_mbaff_ref_list(H264Context *h, H264SliceContext *sl)
Definition: h264_refs.c:367
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:489
int implicit_weight[48][48][2]
Definition: h264.h:392
int cur_chroma_format_idc
Definition: h264.h:820
int8_t * intra4x4_pred_mode
Definition: h264.h:401
int long_arg
index, pic_num, or num long refs depending on opcode
Definition: h264.h:306
uint8_t * rbsp_buffer
Definition: h264.h:510
int sei_ct_type
Bit set of clock types for fields/frames in picture timing SEI message.
Definition: h264.h:757
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:465
#define MB_TYPE_16x8
Definition: avcodec.h:1145
Core video DSP helper functions.
int bit_depth_luma
bit_depth_luma_minus8 + 8
Definition: h264.h:227
static av_always_inline int get_chroma_qp(const H264Context *h, int t, int qscale)
Get the chroma qp.
Definition: h264.h:1044
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:652
void ff_h264_set_erpic(ERPicture *dst, H264Picture *src)
Definition: h264_picture.c:131
uint8_t zigzag_scan8x8_cavlc_q0[64]
Definition: h264.h:611
int8_t ref_cache[2][5 *8]
Definition: h264.h:487
Decoded Picture Buffer (DPB).
Definition: vaapi_h264.c:81
Definition: h264.h:113
#define IS_8X8(a)
Definition: mpegutils.h:85
int luma_log2_weight_denom
Definition: h264.h:385
int chroma_weight[48][2][2][2]
Definition: h264.h:391
Frame Packing Arrangement Type.
Definition: h264.h:262
H264Picture cur_pic
Definition: h264.h:528
int sei_display_orientation_present
display orientation SEI message
Definition: h264.h:740
int content_interpretation_type
Definition: h264.h:734
int mb_width
Definition: h264.h:619
enum AVPictureType pict_type
Definition: h264.h:710
void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height)
Definition: h264.c:98
int current_slice
current slice number, used to initialize slice_num of each thread/context
Definition: h264.h:692
buffering period (H.264, D.1.1)
Definition: h264.h:133
int mb_width
pic_width_in_mbs_minus1 + 1
Definition: h264.h:189
int slice_group_count
num_slice_groups_minus1 + 1
Definition: h264.h:241
uint32_t * mb2b_xy
Definition: h264.h:570
H264Ref ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264.h:462
uint8_t field_scan8x8_cavlc_q0[64]
Definition: h264.h:614
int cpb_cnt
See H.264 E.1.2.
Definition: h264.h:223
int cur_bit_depth_luma
Definition: h264.h:821
AVBufferRef * ref_index_buf[2]
Definition: h264.h:325
int delta_poc_bottom
Definition: h264.h:648
H264Picture last_pic_for_ec
Definition: h264.h:529
int au_pps_id
pps_id of current access unit
Definition: h264.h:579
const uint8_t * intra_pcm_ptr
Definition: h264.h:467
H264DSPContext h264dsp
Definition: h264.h:521
int ff_h264_get_profile(SPS *sps)
compute profile from sps
Definition: h264.c:1218
int crop_top
Definition: h264.h:348
unsigned int left_samples_available
Definition: h264.h:419
int ref_count[2][2]
number of entries in ref_poc (FIXME need per slice)
Definition: h264.h:337
uint8_t(*[2] mvd_table)[2]
Definition: h264.h:500
uint8_t field_scan8x8[64]
Definition: h264.h:607
int slice_type_fixed
Definition: h264.h:370
#define av_always_inline
Definition: attributes.h:37
int slice_beta_offset
Definition: h264.h:380
int8_t * intra4x4_pred_mode
Definition: h264.h:556
int dist_scale_factor_field[2][32]
Definition: h264.h:453
int cpb_removal_delay_length
cpb_removal_delay_length_minus1 + 1
Definition: h264.h:225
8: frame tripling
Definition: h264.h:155
#define AV_RN64A(p)
Definition: intreadwrite.h:530
uint8_t field_scan_q0[16]
Definition: h264.h:612
#define LIST_NOT_USED
Definition: h264.h:561
int mb_field_decoding_flag
Definition: h264.h:434
uint8_t(* non_zero_count)[48]
Definition: h264.h:559
unsigned int crop_bottom
frame_cropping_rect_bottom_offset
Definition: h264.h:200
uint8_t * bipred_scratchpad
Definition: h264.h:470
float min
AVPixelFormat
Pixel format.
Definition: pixfmt.h:61
AVClass * av_class
Definition: h264.h:518
int sei_recovery_frame_cnt
recovery_frame_cnt from SEI message
Definition: h264.h:776
Green MetaData Information Type.
Definition: h264.h:274
int droppable
Definition: h264.h:548
int level_idc
Definition: h264.h:177
int nal_ref_idc
Definition: h264.h:626
GetBitContext gb
Definition: h264.h:364
uint8_t field_scan[16]
Definition: h264.h:606
int cabac_init_idc
Definition: h264.h:507
int b_stride
Definition: h264.h:572
int sei_dpb_output_delay
dpb_output_delay in picture timing SEI message, see H.264 C.2.2
Definition: h264.h:762
recovery point (frame # to decoder sync)
Definition: h264.h:137
Context Adaptive Binary Arithmetic Coder.
int left_cbp
Definition: h264.h:450
GreenMPEG information.
Definition: h264.h:140
int chroma_weight_flag[2]
7.4.3.2 chroma_weight_lX_flag
Definition: h264.h:388
int short_ref_count
number of actual short term references
Definition: h264.h:683
void ff_h264_init_dequant_tables(H264Context *h)
Definition: h264_slice.c:367
int mb_slice_group_map_type
Definition: h264.h:242
enum AVColorSpace colorspace
Definition: h264.h:208