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h264.h
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1 /*
2  * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * H.264 / AVC / MPEG4 part10 codec.
25  * @author Michael Niedermayer <michaelni@gmx.at>
26  */
27 
28 #ifndef AVCODEC_H264_H
29 #define AVCODEC_H264_H
30 
31 #include "libavutil/intreadwrite.h"
32 #include "libavutil/thread.h"
33 #include "cabac.h"
34 #include "error_resilience.h"
35 #include "get_bits.h"
36 #include "h264_parse.h"
37 #include "h2645_parse.h"
38 #include "h264chroma.h"
39 #include "h264dsp.h"
40 #include "h264pred.h"
41 #include "h264qpel.h"
42 #include "internal.h"
43 #include "mpegutils.h"
44 #include "parser.h"
45 #include "qpeldsp.h"
46 #include "rectangle.h"
47 #include "videodsp.h"
48 
49 #define H264_MAX_PICTURE_COUNT 36
50 #define H264_MAX_THREADS 32
51 
52 #define MAX_SPS_COUNT 32
53 #define MAX_PPS_COUNT 256
54 
55 #define MAX_MMCO_COUNT 66
56 
57 #define MAX_DELAYED_PIC_COUNT 16
58 
59 #define MAX_MBPAIR_SIZE (256*1024) // a tighter bound could be calculated if someone cares about a few bytes
60 
61 /* Compiling in interlaced support reduces the speed
62  * of progressive decoding by about 2%. */
63 #define ALLOW_INTERLACE
64 
65 #define FMO 0
66 
67 /**
68  * The maximum number of slices supported by the decoder.
69  * must be a power of 2
70  */
71 #define MAX_SLICES 32
72 
73 #ifdef ALLOW_INTERLACE
74 #define MB_MBAFF(h) (h)->mb_mbaff
75 #define MB_FIELD(sl) (sl)->mb_field_decoding_flag
76 #define FRAME_MBAFF(h) (h)->mb_aff_frame
77 #define FIELD_PICTURE(h) ((h)->picture_structure != PICT_FRAME)
78 #define LEFT_MBS 2
79 #define LTOP 0
80 #define LBOT 1
81 #define LEFT(i) (i)
82 #else
83 #define MB_MBAFF(h) 0
84 #define MB_FIELD(sl) 0
85 #define FRAME_MBAFF(h) 0
86 #define FIELD_PICTURE(h) 0
87 #undef IS_INTERLACED
88 #define IS_INTERLACED(mb_type) 0
89 #define LEFT_MBS 1
90 #define LTOP 0
91 #define LBOT 0
92 #define LEFT(i) 0
93 #endif
94 #define FIELD_OR_MBAFF_PICTURE(h) (FRAME_MBAFF(h) || FIELD_PICTURE(h))
95 
96 #ifndef CABAC
97 #define CABAC(h) (h)->pps.cabac
98 #endif
99 
100 #define CHROMA(h) ((h)->sps.chroma_format_idc)
101 #define CHROMA422(h) ((h)->sps.chroma_format_idc == 2)
102 #define CHROMA444(h) ((h)->sps.chroma_format_idc == 3)
103 
104 #define EXTENDED_SAR 255
105 
106 #define MB_TYPE_REF0 MB_TYPE_ACPRED // dirty but it fits in 16 bit
107 #define MB_TYPE_8x8DCT 0x01000000
108 #define IS_REF0(a) ((a) & MB_TYPE_REF0)
109 #define IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT)
110 
111 #define QP_MAX_NUM (51 + 6*6) // The maximum supported qp
112 
113 /* NAL unit types */
114 enum {
116  NAL_DPA = 2,
117  NAL_DPB = 3,
118  NAL_DPC = 4,
120  NAL_SEI = 6,
121  NAL_SPS = 7,
122  NAL_PPS = 8,
123  NAL_AUD = 9,
129  NAL_FF_IGNORE = 0xff0f001,
130 };
131 
132 /**
133  * SEI message types
134  */
135 typedef enum {
136  SEI_TYPE_BUFFERING_PERIOD = 0, ///< buffering period (H.264, D.1.1)
137  SEI_TYPE_PIC_TIMING = 1, ///< picture timing
138  SEI_TYPE_USER_DATA_REGISTERED = 4, ///< registered user data as specified by Rec. ITU-T T.35
139  SEI_TYPE_USER_DATA_UNREGISTERED = 5, ///< unregistered user data
140  SEI_TYPE_RECOVERY_POINT = 6, ///< recovery point (frame # to decoder sync)
141  SEI_TYPE_FRAME_PACKING = 45, ///< frame packing arrangement
142  SEI_TYPE_DISPLAY_ORIENTATION = 47, ///< display orientation
143  SEI_TYPE_GREEN_METADATA = 56 ///< GreenMPEG information
144 } SEI_Type;
145 
146 /**
147  * pic_struct in picture timing SEI message
148  */
149 typedef enum {
150  SEI_PIC_STRUCT_FRAME = 0, ///< 0: %frame
151  SEI_PIC_STRUCT_TOP_FIELD = 1, ///< 1: top field
152  SEI_PIC_STRUCT_BOTTOM_FIELD = 2, ///< 2: bottom field
153  SEI_PIC_STRUCT_TOP_BOTTOM = 3, ///< 3: top field, bottom field, in that order
154  SEI_PIC_STRUCT_BOTTOM_TOP = 4, ///< 4: bottom field, top field, in that order
155  SEI_PIC_STRUCT_TOP_BOTTOM_TOP = 5, ///< 5: top field, bottom field, top field repeated, in that order
156  SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM = 6, ///< 6: bottom field, top field, bottom field repeated, in that order
157  SEI_PIC_STRUCT_FRAME_DOUBLING = 7, ///< 7: %frame doubling
158  SEI_PIC_STRUCT_FRAME_TRIPLING = 8 ///< 8: %frame tripling
160 
161 /**
162  * frame_packing_arrangement types
163  */
164 typedef enum {
172 } SEI_FpaType;
173 
174 /**
175  * Sequence parameter set
176  */
177 typedef struct SPS {
178  unsigned int sps_id;
182  int transform_bypass; ///< qpprime_y_zero_transform_bypass_flag
183  int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4
184  int poc_type; ///< pic_order_cnt_type
185  int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4
189  int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle
190  int ref_frame_count; ///< num_ref_frames
192  int mb_width; ///< pic_width_in_mbs_minus1 + 1
193  int mb_height; ///< pic_height_in_map_units_minus1 + 1
195  int mb_aff; ///< mb_adaptive_frame_field_flag
197  int crop; ///< frame_cropping_flag
198 
199  /* those 4 are already in luma samples */
200  unsigned int crop_left; ///< frame_cropping_rect_left_offset
201  unsigned int crop_right; ///< frame_cropping_rect_right_offset
202  unsigned int crop_top; ///< frame_cropping_rect_top_offset
203  unsigned int crop_bottom; ///< frame_cropping_rect_bottom_offset
214  uint32_t time_scale;
216  short offset_for_ref_frame[256]; // FIXME dyn aloc?
226  int cpb_cnt; ///< See H.264 E.1.2
227  int initial_cpb_removal_delay_length; ///< initial_cpb_removal_delay_length_minus1 + 1
228  int cpb_removal_delay_length; ///< cpb_removal_delay_length_minus1 + 1
229  int dpb_output_delay_length; ///< dpb_output_delay_length_minus1 + 1
230  int bit_depth_luma; ///< bit_depth_luma_minus8 + 8
231  int bit_depth_chroma; ///< bit_depth_chroma_minus8 + 8
232  int residual_color_transform_flag; ///< residual_colour_transform_flag
233  int constraint_set_flags; ///< constraint_set[0-3]_flag
234  int new; ///< flag to keep track if the decoder context needs re-init due to changed SPS
235  uint8_t data[4096];
236  size_t data_size;
237 } SPS;
238 
239 /**
240  * Picture parameter set
241  */
242 typedef struct PPS {
243  unsigned int sps_id;
244  int cabac; ///< entropy_coding_mode_flag
245  int pic_order_present; ///< pic_order_present_flag
246  int slice_group_count; ///< num_slice_groups_minus1 + 1
248  unsigned int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1
249  int weighted_pred; ///< weighted_pred_flag
251  int init_qp; ///< pic_init_qp_minus26 + 26
252  int init_qs; ///< pic_init_qs_minus26 + 26
254  int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag
255  int constrained_intra_pred; ///< constrained_intra_pred_flag
256  int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag
257  int transform_8x8_mode; ///< transform_8x8_mode_flag
260  uint8_t chroma_qp_table[2][QP_MAX_NUM+1]; ///< pre-scaled (with chroma_qp_index_offset) version of qp_table
262  uint8_t data[4096];
263  size_t data_size;
264 } PPS;
265 
266 /**
267  * Frame Packing Arrangement Type
268  */
269 typedef struct FPA {
271  int frame_packing_arrangement_cancel_flag; ///< is previous arrangement canceled, -1 if never received
276 } FPA;
277 
278 /**
279  * Green MetaData Information Type
280  */
281 typedef struct GreenMetaData {
284  uint16_t num_seconds;
285  uint16_t num_pictures;
292 } GreenMetaData;
293 
294 /**
295  * Memory management control operation opcode.
296  */
297 typedef enum MMCOOpcode {
298  MMCO_END = 0,
305 } MMCOOpcode;
306 
307 /**
308  * Memory management control operation.
309  */
310 typedef struct MMCO {
312  int short_pic_num; ///< pic_num without wrapping (pic_num & max_pic_num)
313  int long_arg; ///< index, pic_num, or num long refs depending on opcode
314 } MMCO;
315 
316 typedef struct H264Picture {
319 
321  int8_t *qscale_table;
322 
324  int16_t (*motion_val[2])[2];
325 
327  uint32_t *mb_type;
328 
330  void *hwaccel_picture_private; ///< hardware accelerator private data
331 
333  int8_t *ref_index[2];
334 
335  int field_poc[2]; ///< top/bottom POC
336  int poc; ///< frame POC
337  int frame_num; ///< frame_num (raw frame_num from slice header)
338  int mmco_reset; /**< MMCO_RESET set this 1. Reordering code must
339  not mix pictures before and after MMCO_RESET. */
340  int pic_id; /**< pic_num (short -> no wrap version of pic_num,
341  pic_num & max_pic_num; long -> long_pic_num) */
342  int long_ref; ///< 1->long term reference 0->short term reference
343  int ref_poc[2][2][32]; ///< POCs of the frames/fields used as reference (FIXME need per slice)
344  int ref_count[2][2]; ///< number of entries in ref_poc (FIXME need per slice)
345  int mbaff; ///< 1 -> MBAFF frame 0-> not MBAFF
346  int field_picture; ///< whether or not picture was encoded in separate fields
347 
349  int recovered; ///< picture at IDR or recovery point + recovery count
352 
353  int crop;
355  int crop_top;
356 } H264Picture;
357 
358 typedef struct H264Ref {
360  int linesize[3];
361 
363  int poc;
364  int pic_id;
365 
367 } H264Ref;
368 
369 typedef struct H264SliceContext {
370  struct H264Context *h264;
373 
376  int slice_type_nos; ///< S free slice type (SI/SP are remapped to I/P)
378 
379  int qscale;
380  int chroma_qp[2]; // QPc
381  int qp_thresh; ///< QP threshold to skip loopfilter
383 
384  // deblock
385  int deblocking_filter; ///< disable_deblocking_filter_idc with 1 <-> 0
388 
390 
393 
396 
399 
404 
406  int top_type;
409 
412 
414  unsigned int top_samples_available;
417 
418  ptrdiff_t linesize, uvlinesize;
419  ptrdiff_t mb_linesize; ///< may be equal to s->linesize or s->linesize * 2, for mbaff
420  ptrdiff_t mb_uvlinesize;
421 
422  int mb_x, mb_y;
423  int mb_xy;
426  // index of the first MB of the next slice
430 
432  int mb_mbaff; ///< mb_aff_frame && mb_field_decoding_flag
433 
435 
436  /**
437  * number of neighbors (top and/or left) that used 8x8 dct
438  */
440 
444 
445  int cbp;
446  int top_cbp;
447  int left_cbp;
448 
451  int map_col_to_list0[2][16 + 32];
452  int map_col_to_list0_field[2][2][16 + 32];
453 
454  /**
455  * num_ref_idx_l0/1_active_minus1 + 1
456  */
457  unsigned int ref_count[2]; ///< counts frames or fields, depending on current mb mode
458  unsigned int list_count;
459  H264Ref ref_list[2][48]; /**< 0..15: frame refs, 16..47: mbaff field refs.
460  * Reordered version of default_ref_list
461  * according to picture reordering in slice header */
462  int ref2frm[MAX_SLICES][2][64]; ///< reference to frame number lists, used in the loop filter, the first 2 are for -2,-1
463 
465  int16_t *dc_val_base;
466 
469  uint8_t (*top_borders[2])[(16 * 3) * 2];
473 
474  /**
475  * non zero coeff count cache.
476  * is 64 if not available.
477  */
479 
480  /**
481  * Motion vector cache.
482  */
483  DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2];
484  DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8];
485  DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5 * 8][2];
487 
488  DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4];
489 
490  ///< as a dct coefficient is int32_t in high depth, we need to reserve twice the space.
491  DECLARE_ALIGNED(16, int16_t, mb)[16 * 48 * 2];
492  DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2];
493  ///< as mb is addressed by scantable[i] and scantable is uint8_t we can either
494  ///< check that i is not too large or ensure that there is some unused stuff after mb
495  int16_t mb_padding[256 * 2];
496 
497  uint8_t (*mvd_table[2])[2];
498 
499  /**
500  * Cabac
501  */
505 
506  // rbsp buffer used for this slice
508  unsigned int rbsp_buffer_size;
510 
511 /**
512  * H264Context
513  */
514 typedef struct H264Context {
515  const AVClass *class;
522 
527 
530 
532 
533  int pixel_shift; ///< 0 for 8-bit H264, 1 for high-bit-depth H264
534 
535  /* coded dimensions -- 16 * mb w/h */
536  int width, height;
538 
539  /**
540  * Backup frame properties: needed, because they can be different
541  * between returned frame and last decoded frame.
542  **/
546 
550 
552  int flags;
554 
557 
559 
560 #define LIST_NOT_USED -1 // FIXME rename?
561 #define PART_NOT_AVAILABLE -2
562 
563  /**
564  * block_offset[ 0..23] for frame macroblocks
565  * block_offset[24..47] for field macroblocks
566  */
567  int block_offset[2 * (16 * 3)];
568 
569  uint32_t *mb2b_xy; // FIXME are these 4 a good idea?
570  uint32_t *mb2br_xy;
571  int b_stride; // FIXME use s->b4_stride
572 
573 
574  unsigned current_sps_id; ///< id of the current SPS
575  SPS sps; ///< current sps
576  PPS pps; ///< current pps
577 
578  int au_pps_id; ///< pps_id of current access unit
579 
580  uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; // FIXME should these be moved down?
581  uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64];
582  uint32_t(*dequant4_coeff[6])[16];
583  uint32_t(*dequant8_coeff[6])[64];
584 
585  uint16_t *slice_table; ///< slice_table_base + 2*mb_stride + 1
586 
587  // interlacing specific flags
591 
592  uint8_t *list_counts; ///< Array of list_count per MB specifying the slice type
593 
594  /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0, 1, 2), 0x0? luma_cbp */
595  uint16_t *cbp_table;
596 
597  /* chroma_pred_mode for i4x4 or i16x16, else 0 */
599  uint8_t (*mvd_table[2])[2];
601 
614 
616 
617  int mb_y;
620  int mb_num;
621 
622  // =============================================================
623  // Things below are not used in the MB or more inner code
624 
627 
628  /**
629  * Used to parse AVC variant of h264
630  */
631  int is_avc; ///< this flag is != 0 if codec is avc1
632  int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
633 
634  int bit_depth_luma; ///< luma bit depth from sps to detect changes
635  int chroma_format_idc; ///< chroma format from sps to detect changes
636 
639 
640  int dequant_coeff_pps; ///< reinit tables when pps changes
641 
642  uint16_t *slice_table_base;
643 
644  // POC stuff
645  int poc_lsb;
646  int poc_msb;
648  int delta_poc[2];
650  int prev_poc_msb; ///< poc_msb of the last reference pic for POC type 0
651  int prev_poc_lsb; ///< poc_lsb of the last reference pic for POC type 0
652  int frame_num_offset; ///< for POC type 2
653  int prev_frame_num_offset; ///< for POC type 2
654  int prev_frame_num; ///< frame_num of the last pic for POC type 1/2
655 
656  /**
657  * frame_num for frames or 2 * frame_num + 1 for field pics.
658  */
660 
661  /**
662  * max_frame_num or 2 * max_frame_num for field pics.
663  */
665 
673 
674  /**
675  * memory management control operations buffer.
676  */
680 
681  int long_ref_count; ///< number of actual long term references
682  int short_ref_count; ///< number of actual short term references
683 
684  /**
685  * @name Members for slice based multithreading
686  * @{
687  */
688  /**
689  * current slice number, used to initialize slice_num of each thread/context
690  */
692 
693  /**
694  * Max number of threads / contexts.
695  * This is equal to AVCodecContext.thread_count unless
696  * multithreaded decoding is impossible, in which case it is
697  * reduced to 1.
698  */
700 
702 
703  /**
704  * 1 if the single thread fallback warning has already been
705  * displayed, 0 otherwise.
706  */
708 
710 
711  /** @} */
712 
713  /**
714  * pic_struct in picture timing SEI message
715  */
717 
718  /**
719  * Complement sei_pic_struct
720  * SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced frames.
721  * However, soft telecined frames may have these values.
722  * This is used in an attempt to flag soft telecine progressive.
723  */
725 
726  /**
727  * frame_packing_arrangment SEI message
728  */
733 
734  /**
735  * display orientation SEI message
736  */
740 
741  /**
742  * User data registered by Rec. ITU-T T.35 SEI
743  */
748 
749  /**
750  * Bit set of clock types for fields/frames in picture timing SEI message.
751  * For each found ct_type, appropriate bit is set (e.g., bit 1 for
752  * interlaced).
753  */
755 
756  /**
757  * dpb_output_delay in picture timing SEI message, see H.264 C.2.2
758  */
760 
761  /**
762  * cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
763  */
765 
766  /**
767  * recovery_frame_cnt from SEI message
768  *
769  * Set to -1 if no recovery point SEI message found or to number of frames
770  * before playback synchronizes. Frames having recovery point are key
771  * frames.
772  */
774 
775  /**
776  * Are the SEI recovery points looking valid.
777  */
779 
781 
782  /**
783  * recovery_frame is the frame_num at which the next frame should
784  * be fully constructed.
785  *
786  * Set to -1 when not expecting a recovery point.
787  */
789 
790 /**
791  * We have seen an IDR, so all the following frames in coded order are correctly
792  * decodable.
793  */
794 #define FRAME_RECOVERED_IDR (1 << 0)
795 /**
796  * Sufficient number of frames have been decoded since a SEI recovery point,
797  * so all the following frames in presentation order are correct.
798  */
799 #define FRAME_RECOVERED_SEI (1 << 1)
800 
801  int frame_recovered; ///< Initial frame has been completely recovered
802 
804 
806 
807 /* for frame threading, this is set to 1
808  * after finish_setup() has been called, so we cannot modify
809  * some context properties (which are supposed to stay constant between
810  * slices) anymore */
812 
813  // Timestamp stuff
814  int sei_buffering_period_present; ///< Buffering period SEI flag
815  int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs
816 
819  int16_t slice_row[MAX_SLICES]; ///< to detect when MAX_SLICES is too low
820 
824 
826 
831 
832  /* Motion Estimation */
835 
836  /*Green Metadata */
838 
839 } H264Context;
840 
841 extern const uint16_t ff_h264_mb_sizes[4];
842 
843 /**
844  * Decode SEI
845  */
847 
848 /**
849  * Decode SPS
850  */
851 int ff_h264_decode_seq_parameter_set(H264Context *h, int ignore_truncation);
852 
853 /**
854  * compute profile from sps
855  */
856 int ff_h264_get_profile(SPS *sps);
857 
858 /**
859  * Decode PPS
860  */
862 
863 /**
864  * Free any data that may have been allocated in the H264 context
865  * like SPS, PPS etc.
866  */
868 
869 /**
870  * Reconstruct bitstream slice_type.
871  */
873 
874 /**
875  * Allocate tables.
876  * needs width/height
877  */
879 
883 
884 /**
885  * Execute the reference picture marking (memory management control operations).
886  */
887 int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count);
888 
890  int first_slice);
891 
892 int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice);
893 
897 void ff_h264_decode_init_vlc(void);
898 
899 /**
900  * Decode a macroblock
901  * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
902  */
904 
905 /**
906  * Decode a CABAC coded macroblock
907  * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
908  */
910 
912 
914 
918  int *mb_type);
919 
920 void ff_h264_filter_mb_fast(const H264Context *h, H264SliceContext *sl, int mb_x, int mb_y,
921  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
922  unsigned int linesize, unsigned int uvlinesize);
923 void ff_h264_filter_mb(const H264Context *h, H264SliceContext *sl, int mb_x, int mb_y,
924  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
925  unsigned int linesize, unsigned int uvlinesize);
926 
927 /**
928  * Reset SEI values at the beginning of the frame.
929  *
930  * @param h H.264 context.
931  */
933 
934 /**
935  * Get stereo_mode string from the h264 frame_packing_arrangement
936  * @param h H.264 context.
937  */
939 
940 /*
941  * o-o o-o
942  * / / /
943  * o-o o-o
944  * ,---'
945  * o-o o-o
946  * / / /
947  * o-o o-o
948  */
949 
950 /* Scan8 organization:
951  * 0 1 2 3 4 5 6 7
952  * 0 DY y y y y y
953  * 1 y Y Y Y Y
954  * 2 y Y Y Y Y
955  * 3 y Y Y Y Y
956  * 4 y Y Y Y Y
957  * 5 DU u u u u u
958  * 6 u U U U U
959  * 7 u U U U U
960  * 8 u U U U U
961  * 9 u U U U U
962  * 10 DV v v v v v
963  * 11 v V V V V
964  * 12 v V V V V
965  * 13 v V V V V
966  * 14 v V V V V
967  * DY/DU/DV are for luma/chroma DC.
968  */
969 
970 #define LUMA_DC_BLOCK_INDEX 48
971 #define CHROMA_DC_BLOCK_INDEX 49
972 
973 // This table must be here because scan8[constant] must be known at compiletime
974 static const uint8_t scan8[16 * 3 + 3] = {
975  4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8,
976  6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8,
977  4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8,
978  6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8,
979  4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8,
980  6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8,
981  4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8,
982  6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8,
983  4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8,
984  6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8,
985  4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8,
986  6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8,
987  0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8
988 };
989 
990 static av_always_inline uint32_t pack16to32(unsigned a, unsigned b)
991 {
992 #if HAVE_BIGENDIAN
993  return (b & 0xFFFF) + (a << 16);
994 #else
995  return (a & 0xFFFF) + (b << 16);
996 #endif
997 }
998 
999 static av_always_inline uint16_t pack8to16(unsigned a, unsigned b)
1000 {
1001 #if HAVE_BIGENDIAN
1002  return (b & 0xFF) + (a << 8);
1003 #else
1004  return (a & 0xFF) + (b << 8);
1005 #endif
1006 }
1007 
1008 /**
1009  * Get the chroma qp.
1010  */
1011 static av_always_inline int get_chroma_qp(const H264Context *h, int t, int qscale)
1012 {
1013  return h->pps.chroma_qp_table[t][qscale];
1014 }
1015 
1016 /**
1017  * Get the predicted intra4x4 prediction mode.
1018  */
1020  H264SliceContext *sl, int n)
1021 {
1022  const int index8 = scan8[n];
1023  const int left = sl->intra4x4_pred_mode_cache[index8 - 1];
1024  const int top = sl->intra4x4_pred_mode_cache[index8 - 8];
1025  const int min = FFMIN(left, top);
1026 
1027  ff_tlog(h->avctx, "mode:%d %d min:%d\n", left, top, min);
1028 
1029  if (min < 0)
1030  return DC_PRED;
1031  else
1032  return min;
1033 }
1034 
1036  H264SliceContext *sl)
1037 {
1038  int8_t *i4x4 = sl->intra4x4_pred_mode + h->mb2br_xy[sl->mb_xy];
1039  int8_t *i4x4_cache = sl->intra4x4_pred_mode_cache;
1040 
1041  AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
1042  i4x4[4] = i4x4_cache[7 + 8 * 3];
1043  i4x4[5] = i4x4_cache[7 + 8 * 2];
1044  i4x4[6] = i4x4_cache[7 + 8 * 1];
1045 }
1046 
1048  H264SliceContext *sl)
1049 {
1050  const int mb_xy = sl->mb_xy;
1051  uint8_t *nnz = h->non_zero_count[mb_xy];
1052  uint8_t *nnz_cache = sl->non_zero_count_cache;
1053 
1054  AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]);
1055  AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]);
1056  AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]);
1057  AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]);
1058  AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]);
1059  AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]);
1060  AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]);
1061  AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]);
1062 
1063  if (!h->chroma_y_shift) {
1064  AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]);
1065  AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]);
1066  AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]);
1067  AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]);
1068  }
1069 }
1070 
1072  H264SliceContext *sl,
1073  int b_stride,
1074  int b_xy, int b8_xy,
1075  int mb_type, int list)
1076 {
1077  int16_t(*mv_dst)[2] = &h->cur_pic.motion_val[list][b_xy];
1078  int16_t(*mv_src)[2] = &sl->mv_cache[list][scan8[0]];
1079  AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0);
1080  AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1);
1081  AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2);
1082  AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3);
1083  if (CABAC(h)) {
1084  uint8_t (*mvd_dst)[2] = &sl->mvd_table[list][FMO ? 8 * sl->mb_xy
1085  : h->mb2br_xy[sl->mb_xy]];
1086  uint8_t(*mvd_src)[2] = &sl->mvd_cache[list][scan8[0]];
1087  if (IS_SKIP(mb_type)) {
1088  AV_ZERO128(mvd_dst);
1089  } else {
1090  AV_COPY64(mvd_dst, mvd_src + 8 * 3);
1091  AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0);
1092  AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1);
1093  AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2);
1094  }
1095  }
1096 
1097  {
1098  int8_t *ref_index = &h->cur_pic.ref_index[list][b8_xy];
1099  int8_t *ref_cache = sl->ref_cache[list];
1100  ref_index[0 + 0 * 2] = ref_cache[scan8[0]];
1101  ref_index[1 + 0 * 2] = ref_cache[scan8[4]];
1102  ref_index[0 + 1 * 2] = ref_cache[scan8[8]];
1103  ref_index[1 + 1 * 2] = ref_cache[scan8[12]];
1104  }
1105 }
1106 
1108  H264SliceContext *sl,
1109  int mb_type)
1110 {
1111  const int b_stride = h->b_stride;
1112  const int b_xy = 4 * sl->mb_x + 4 * sl->mb_y * h->b_stride; // try mb2b(8)_xy
1113  const int b8_xy = 4 * sl->mb_xy;
1114 
1115  if (USES_LIST(mb_type, 0)) {
1116  write_back_motion_list(h, sl, b_stride, b_xy, b8_xy, mb_type, 0);
1117  } else {
1118  fill_rectangle(&h->cur_pic.ref_index[0][b8_xy],
1119  2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
1120  }
1121  if (USES_LIST(mb_type, 1))
1122  write_back_motion_list(h, sl, b_stride, b_xy, b8_xy, mb_type, 1);
1123 
1124  if (sl->slice_type_nos == AV_PICTURE_TYPE_B && CABAC(h)) {
1125  if (IS_8X8(mb_type)) {
1126  uint8_t *direct_table = &h->direct_table[4 * sl->mb_xy];
1127  direct_table[1] = sl->sub_mb_type[1] >> 1;
1128  direct_table[2] = sl->sub_mb_type[2] >> 1;
1129  direct_table[3] = sl->sub_mb_type[3] >> 1;
1130  }
1131  }
1132 }
1133 
1135 {
1137  return !(AV_RN64A(sl->sub_mb_type) &
1139  0x0001000100010001ULL));
1140  else
1141  return !(AV_RN64A(sl->sub_mb_type) &
1143  0x0001000100010001ULL));
1144 }
1145 
1146 static inline int find_start_code(const uint8_t *buf, int buf_size,
1147  int buf_index, int next_avc)
1148 {
1149  uint32_t state = -1;
1150 
1151  buf_index = avpriv_find_start_code(buf + buf_index, buf + next_avc + 1, &state) - buf - 1;
1152 
1153  return FFMIN(buf_index, buf_size);
1154 }
1155 
1156 static inline int get_avc_nalsize(H264Context *h, const uint8_t *buf,
1157  int buf_size, int *buf_index)
1158 {
1159  int i, nalsize = 0;
1160 
1161  if (*buf_index >= buf_size - h->nal_length_size) {
1162  // the end of the buffer is reached, refill it.
1163  return AVERROR(EAGAIN);
1164  }
1165 
1166  for (i = 0; i < h->nal_length_size; i++)
1167  nalsize = ((unsigned)nalsize << 8) | buf[(*buf_index)++];
1168  if (nalsize <= 0 || nalsize > buf_size - *buf_index) {
1170  "AVC: nal size %d\n", nalsize);
1171  return AVERROR_INVALIDDATA;
1172  }
1173  return nalsize;
1174 }
1175 
1176 int ff_h264_field_end(H264Context *h, H264SliceContext *sl, int in_setup);
1177 
1180 
1182 
1183 void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height);
1184 int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc);
1185 
1187 #define SLICE_SINGLETHREAD 1
1188 #define SLICE_SKIPED 2
1189 
1190 int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count);
1192  const AVCodecContext *src);
1193 
1195 
1197 
1199 
1200 #endif /* AVCODEC_H264_H */
registered user data as specified by Rec. ITU-T T.35
Definition: h264.h:138
int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc)
Definition: h264.c:895
int chroma_format_idc
Definition: h264.h:181
struct H264Context * h264
Definition: h264.h:370
int video_signal_type_present_flag
Definition: h264.h:206
const uint8_t * left_block
Definition: h264.h:410
#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:310
int workaround_bugs
Definition: h264.h:553
int long_ref
1->long term reference 0->short term reference
Definition: h264.h:342
#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:707
uint8_t percent_alpha_point_deblocking_instance
Definition: h264.h:289
int col_parity
Definition: h264.h:442
GetBitContext gb
Definition: h264.h:521
int sei_recovery_frame_cnt
Definition: h264.h:351
int ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
Init context Allocate buffers which are not shared amongst multiple threads.
Definition: h264.c:241
enum AVPixelFormat backup_pix_fmt
Definition: h264.h:545
int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count)
Call decode_slice() for each context.
Definition: h264_slice.c:2500
int16_t mb[16 *48 *2]
Definition: h264.h:491
5: top field, bottom field, top field repeated, in that order
Definition: h264.h:155
int topright_mb_xy
Definition: h264.h:402
int sei_cpb_removal_delay
cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
Definition: h264.h:764
int low_delay
Definition: h264.h:549
int mb_num
Definition: h264.h:620
int ff_h264_decode_ref_pic_list_reordering(H264Context *h, H264SliceContext *sl)
Definition: h264_refs.c:241
This structure describes decoded (raw) audio or video data.
Definition: frame.h:180
int mb_aff_frame
Definition: h264.h:588
int topleft_partition
Definition: h264.h:411
uint8_t parse_history[6]
Definition: h264.h:821
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
Definition: h264.h:483
int delta_poc[2]
Definition: h264.h:648
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:439
int dist_scale_factor[32]
Definition: h264.h:449
#define LEFT_MBS
Definition: h264.h:78
int quincunx_subsampling
Definition: h264.h:732
int edge_emu_buffer_allocated
Definition: h264.h:471
int a53_caption_size
Definition: h264.h:746
3: top field, bottom field, in that order
Definition: h264.h:153
#define H264_MAX_PICTURE_COUNT
Definition: h264.h:49
int first_field
Definition: h264.h:590
int ff_h264_decode_mb_cavlc(const H264Context *h, H264SliceContext *sl)
Decode a macroblock.
Definition: h264_cavlc.c:706
uint8_t field_scan8x8_q0[64]
Definition: h264.h:612
unregistered user data
Definition: h264.h:139
int weighted_bipred_idc
Definition: h264.h:250
int left_mb_xy[LEFT_MBS]
Definition: h264.h:403
int chroma_qp_index_offset[2]
Definition: h264.h:253
unsigned int topleft_samples_available
Definition: h264.h:413
H264ChromaContext h264chroma
Definition: h264.h:519
uint16_t * cbp_table
Definition: h264.h:595
int scaling_matrix_present
Definition: h264.h:219
MMCO mmco[MAX_MMCO_COUNT]
memory management control operations buffer.
Definition: h264.h:677
uint8_t scaling_matrix4[6][16]
Definition: h264.h:220
uint8_t mvd_cache[2][5 *8][2]
Definition: h264.h:485
7: frame doubling
Definition: h264.h:157
#define MAX_PPS_COUNT
Definition: h264.h:53
Sequence parameter set.
Definition: h264.h:177
int initial_cpb_removal_delay[32]
Initial timestamps for CPBs.
Definition: h264.h:815
int mb_y
Definition: h264.h:617
int coded_picture_number
Definition: h264.h:548
int bitstream_restriction_flag
Definition: h264.h:217
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:248
#define FMO
Definition: h264.h:65
AVBufferRef * mb_type_buf
Definition: h264.h:326
int bipred_scratchpad_allocated
Definition: h264.h:470
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:828
int chroma_x_shift
Definition: h264.h:537
qpel_mc_func(* qpel_put)[16]
Definition: h264.h:833
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:242
int prev_mb_skipped
Definition: h264.h:391
int crop
Definition: h264.h:353
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:53
int16_t(*[2] motion_val)[2]
Definition: h264.h:324
int flags
Definition: h264.h:552
int frame_mbs_only_flag
Definition: h264.h:194
int mb_height
Definition: h264.h:618
H264Picture * delayed_pic[MAX_DELAYED_PIC_COUNT+2]
Definition: h264.h:669
int is_avc
Used to parse AVC variant of h264.
Definition: h264.h:631
int mmco_index
Definition: h264.h:678
H264Ref default_ref[2]
Definition: h264.h:666
AVBufferPool * ref_index_pool
Definition: h264.h:830
MMCOOpcode
Memory management control operation opcode.
Definition: h264.h:297
uint8_t zigzag_scan8x8_cavlc[64]
Definition: h264.h:604
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:427
uint32_t dequant8_buffer[6][QP_MAX_NUM+1][64]
Definition: h264.h:581
int sei_reguserdata_afd_present
User data registered by Rec.
Definition: h264.h:744
void ff_h264_decode_init_vlc(void)
Definition: h264_cavlc.c:327
H264Context.
Definition: h264.h:514
int16_t mb_padding[256 *2]
Definition: h264.h:495
static av_always_inline void write_back_motion(const H264Context *h, H264SliceContext *sl, int mb_type)
Definition: h264.h:1107
AVFrame * f
Definition: h264.h:317
static av_always_inline void write_back_non_zero_count(const H264Context *h, H264SliceContext *sl)
Definition: h264.h:1047
int prev_poc_msb
poc_msb of the last reference pic for POC type 0
Definition: h264.h:650
int chroma_qp_diff
Definition: h264.h:261
int frame_packing_arrangement_repetition_period
Definition: h264.h:273
uint32_t num_units_in_tick
Definition: h264.h:213
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:154
H264Picture * long_ref[32]
Definition: h264.h:668
static struct @224 state
int picture_structure
Definition: h264.h:589
#define AV_COPY32(d, s)
Definition: intreadwrite.h:586
int profile_idc
Definition: h264.h:179
int frame_packing_arrangement_id
Definition: h264.h:270
unsigned current_sps_id
id of the current SPS
Definition: h264.h:574
MMCOOpcode opcode
Definition: h264.h:311
AVColorTransferCharacteristic
Color Transfer Characteristic.
Definition: pixfmt.h:404
H.264 DSP functions.
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:457
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:1565
int topleft_mb_xy
Definition: h264.h:400
uint8_t * chroma_pred_mode_table
Definition: h264.h:598
int setup_finished
Definition: h264.h:811
uint8_t percent_six_tap_filtering
Definition: h264.h:288
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:202
#define USES_LIST(a, list)
Definition: mpegutils.h:101
int fixed_frame_rate_flag
Definition: h264.h:215
static av_always_inline uint16_t pack8to16(unsigned a, unsigned b)
Definition: h264.h:999
int is_complex
Definition: h264.h:429
uint8_t scaling_matrix4[6][16]
Definition: h264.h:258
int parse_history_count
Definition: h264.h:822
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
Definition: h264.h:254
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:488
int short_pic_num
pic_num without wrapping (pic_num & max_pic_num)
Definition: h264.h:312
Definition: h264.h:358
uint32_t(*[6] dequant4_coeff)[16]
Definition: h264.h:582
uint8_t * a53_caption
Definition: h264.h:747
uint8_t
int prev_frame_num_offset
for POC type 2
Definition: h264.h:653
SEI_FpaType frame_packing_arrangement_type
Definition: h264.h:272
int full_range
Definition: h264.h:207
unsigned int crop_left
frame_cropping_rect_left_offset
Definition: h264.h:200
int offset_for_non_ref_pic
Definition: h264.h: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:191
int slice_alpha_c0_offset
Definition: h264.h:386
int poc
Definition: h264.h:363
int field_picture
whether or not picture was encoded in separate fields
Definition: h264.h:346
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
Definition: h264.h:231
AVColorSpace
YUV colorspace type.
Definition: pixfmt.h:429
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
Definition: h264.c:180
enum AVColorPrimaries color_primaries
Definition: h264.h:209
int poc
frame POC
Definition: h264.h:336
void ff_h264_direct_dist_scale_factor(const H264Context *const h, H264SliceContext *sl)
Definition: h264_direct.c:51
int slice_type
Definition: h264.h:375
int cabac
entropy_coding_mode_flag
Definition: h264.h:244
static int find_start_code(const uint8_t *buf, int buf_size, int buf_index, int next_avc)
Definition: h264.h:1146
unsigned int crop_right
frame_cropping_rect_right_offset
Definition: h264.h:201
SEI_PicStructType
pic_struct in picture timing SEI message
Definition: h264.h:149
uint8_t(*[2] top_borders)[(16 *3)*2]
Definition: h264.h:469
int invalid_gap
Definition: h264.h:350
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:801
int map_col_to_list0_field[2][2][16+32]
Definition: h264.h:452
int height
Definition: h264.h:536
static av_always_inline int pred_intra_mode(const H264Context *h, H264SliceContext *sl, int n)
Get the predicted intra4x4 prediction mode.
Definition: h264.h:1019
int transform_bypass
qpprime_y_zero_transform_bypass_flag
Definition: h264.h:182
qpel_mc_func(* qpel_avg)[16]
Definition: h264.h:834
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
Definition: h264.h:256
bitstream reader API header.
int chroma_y_shift
Definition: h264.h:537
#define MAX_DELAYED_PIC_COUNT
Definition: h264.h:57
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:320
SEI_Type
SEI message types.
Definition: h264.h:135
H264Picture * parent
Definition: h264.h:366
int ff_h264_decode_mb_cabac(const H264Context *h, H264SliceContext *sl)
Decode a CABAC coded macroblock.
Definition: h264_cabac.c:1915
AVColorPrimaries
Chromaticity coordinates of the source primaries.
Definition: pixfmt.h:385
int recovered
picture at IDR or recovery point + recovery count
Definition: h264.h:349
#define AV_COPY64(d, s)
Definition: intreadwrite.h:590
int chroma_qp[2]
Definition: h264.h:380
#define av_log(a,...)
Definition: h264.h:122
uint8_t period_type
Definition: h264.h:283
int sei_vflip
Definition: h264.h:739
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:424
unsigned int rbsp_buffer_size
Definition: h264.h:508
int last_pocs[MAX_DELAYED_PIC_COUNT]
Definition: h264.h:670
int width
Definition: h264.h:536
#define MAX_SLICES
The maximum number of slices supported by the decoder.
Definition: h264.h:71
int slice_num
Definition: h264.h:374
int frame_num
Definition: h264.h:649
unsigned int topright_samples_available
Definition: h264.h:415
void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl)
Definition: h264_mb.c:798
enum AVColorTransferCharacteristic color_trc
Definition: h264.h:210
int mb_aff
mb_adaptive_frame_field_flag
Definition: h264.h:195
H264PredContext hpc
Definition: h264.h:556
#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:1134
int16_t * dc_val_base
Definition: h264.h:465
int poc_type
pic_order_cnt_type
Definition: h264.h:184
int context_initialized
Definition: h264.h:551
static av_always_inline void write_back_intra_pred_mode(const H264Context *h, H264SliceContext *sl)
Definition: h264.h:1035
int constrained_intra_pred
constrained_intra_pred_flag
Definition: h264.h:255
ERContext er
Definition: h264.h:372
int nal_unit_type
Definition: h264.h:626
int num_reorder_frames
Definition: h264.h:218
#define AVERROR(e)
Definition: error.h:43
void * hwaccel_picture_private
hardware accelerator private data
Definition: h264.h:330
int backup_height
Definition: h264.h:544
int map_col_to_list0[2][16+32]
Definition: h264.h:451
int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size)
Definition: h264.c:358
int time_offset_length
Definition: h264.h:225
int8_t intra4x4_pred_mode_cache[5 *8]
Definition: h264.h:397
int backup_width
Backup frame properties: needed, because they can be different between returned frame and last decode...
Definition: h264.h:543
H2645Packet pkt
Definition: h264.h:531
SEI_FpaType
frame_packing_arrangement types
Definition: h264.h:164
int parse_last_mb
Definition: h264.h:823
PPS pps
current pps
Definition: h264.h:576
int deblocking_filter
disable_deblocking_filter_idc with 1 <-> 0
Definition: h264.h:385
uint8_t(*[2] mvd_table)[2]
Definition: h264.h:599
int prev_interlaced_frame
Complement sei_pic_struct SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced...
Definition: h264.h:724
int ref_poc[2][2][32]
POCs of the frames/fields used as reference (FIXME need per slice)
Definition: h264.h:343
ThreadFrame tf
Definition: h264.h:318
0: frame
Definition: h264.h:150
int weighted_pred
weighted_pred_flag
Definition: h264.h:249
#define IS_SKIP(a)
Definition: mpegutils.h:83
H264QpelContext h264qpel
Definition: h264.h:520
int direct_spatial_mv_pred
Definition: h264.h:441
#define CABAC(h)
Definition: h264.h:97
uint16_t num_pictures
Definition: h264.h:285
unsigned int top_samples_available
Definition: h264.h:414
int frame_num
frame_num (raw frame_num from slice header)
Definition: h264.h:337
static av_always_inline uint32_t pack16to32(unsigned a, unsigned b)
Definition: h264.h:990
int valid_recovery_point
Are the SEI recovery points looking valid.
Definition: h264.h:778
int residual_color_transform_flag
residual_colour_transform_flag
Definition: h264.h:232
uint8_t * list_counts
Array of list_count per MB specifying the slice type.
Definition: h264.h:592
int delta_pic_order_always_zero_flag
Definition: h264.h:186
GreenMetaData sei_green_metadata
Definition: h264.h:837
int offset_for_top_to_bottom_field
Definition: h264.h:188
int slice_type_nos
S free slice type (SI/SP are remapped to I/P)
Definition: h264.h:376
int ff_h264_decode_slice_header(H264Context *h, H264SliceContext *sl)
Decode a slice header.
Definition: h264_slice.c:1110
uint8_t zigzag_scan8x8[64]
Definition: h264.h:603
int mb_skip_run
Definition: h264.h:428
AVBufferRef * hwaccel_priv_buf
Definition: h264.h:329
static const uint8_t scan8[16 *3+3]
Definition: h264.h:974
const uint16_t ff_h264_mb_sizes[4]
Definition: h264.c:58
int crop_left
Definition: h264.h:354
uint8_t cabac_state[1024]
Definition: h264.h:503
int crop
frame_cropping_flag
Definition: h264.h:197
int ff_h264_decode_init(AVCodecContext *avctx)
Definition: h264.c:480
int pic_id
Definition: h264.h:364
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:492
int content_interpretation_type
Definition: h264.h:274
uint8_t * direct_table
Definition: h264.h:600
uint8_t scaling_matrix8[6][64]
Definition: h264.h:259
int nal_length_size
Number of bytes used for nal length (1, 2 or 4)
Definition: h264.h:632
useful rectangle filling function
size_t data_size
Definition: h264.h:236
AVBufferRef * motion_val_buf[2]
Definition: h264.h:323
int sei_anticlockwise_rotation
Definition: h264.h:738
Context for storing H.264 DSP functions.
Definition: h264dsp.h:41
int ref_frame_count
num_ref_frames
Definition: h264.h:190
int frame_num_offset
for POC type 2
Definition: h264.h:652
int chroma_pred_mode
Definition: h264.h:394
#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:227
FPA sei_fpa
Definition: h264.h:780
int x264_build
Definition: h264.h:615
uint32_t * mb2br_xy
Definition: h264.h:570
#define MB_TYPE_DIRECT2
Definition: avcodec.h:1245
#define FFMIN(a, b)
Definition: common.h:96
uint16_t * slice_table
slice_table_base + 2*mb_stride + 1
Definition: h264.h:585
uint8_t field_scan8x8_cavlc[64]
Definition: h264.h:607
int poc_cycle_length
num_ref_frames_in_pic_order_cnt_cycle
Definition: h264.h:189
CABACContext cabac
Cabac.
Definition: h264.h:502
int colour_description_present_flag
Definition: h264.h:208
int reference
Definition: h264.h:348
AVRational sar
Definition: h264.h:205
int sei_frame_packing_present
frame_packing_arrangment SEI message
Definition: h264.h:729
int redundant_pic_count
Definition: h264.h:434
int nb_slice_ctx
Definition: h264.h:529
H264PredWeightTable pwt
Definition: h264.h:389
int long_ref_count
number of actual long term references
Definition: h264.h:681
uint32_t * mb_type
Definition: h264.h:327
int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src)
Definition: h264_picture.c:68
int top_mb_xy
Definition: h264.h:401
SPS sps
current sps
Definition: h264.h:575
int next_mb_skipped
Definition: h264.h:392
uint8_t percent_non_zero_macroblocks
Definition: h264.h:286
PPS * pps_buffers[MAX_PPS_COUNT]
Definition: h264.h:638
int sei_hflip
Definition: h264.h:739
#define MAX_SPS_COUNT
Definition: h264.h:52
Definition: h264.h:123
uint8_t chroma_qp_table[2][QP_MAX_NUM+1]
pre-scaled (with chroma_qp_index_offset) version of qp_table
Definition: h264.h:260
int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length)
Decode PPS.
Definition: h264_ps.c:587
void ff_h264_free_tables(H264Context *h)
Definition: h264.c:137
int init_qp
pic_init_qp_minus26 + 26
Definition: h264.h:251
int mmco_reset
Definition: h264.h:679
H264SliceContext * slice_ctx
Definition: h264.h:528
int direct_8x8_inference_flag
Definition: h264.h:196
int n
Definition: avisynth_c.h:547
int poc_lsb
Definition: h264.h:645
int reference
Definition: h264.h:362
int max_pic_num
max_frame_num or 2 * max_frame_num for field pics.
Definition: h264.h:664
int top_borders_allocated[2]
Definition: h264.h:472
int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice)
Definition: h264_refs.c:589
uint8_t scaling_matrix8[6][64]
Definition: h264.h:221
frame packing arrangement
Definition: h264.h:141
uint8_t active_format_description
Definition: h264.h:745
int curr_pic_num
frame_num for frames or 2 * frame_num + 1 for field pics.
Definition: h264.h:659
#define src
Definition: vp9dsp.c:530
uint32_t dequant4_buffer[6][QP_MAX_NUM+1][16]
Definition: h264.h:580
void ff_h264_init_cabac_states(const H264Context *h, H264SliceContext *sl)
Definition: h264_cabac.c:1264
unsigned int sps_id
Definition: h264.h:178
uint8_t * edge_emu_buffer
Definition: h264.h:468
int ff_h264_get_slice_type(const H264SliceContext *sl)
Reconstruct bitstream slice_type.
Definition: h264_slice.c:1918
int top_type
Definition: h264.h:406
int dequant_coeff_pps
reinit tables when pps changes
Definition: h264.h:640
int pic_order_present
pic_order_present_flag
Definition: h264.h:245
SPS * sps_buffers[MAX_SPS_COUNT]
Definition: h264.h:637
uint8_t zigzag_scan_q0[16]
Definition: h264.h:608
int bit_depth_luma
luma bit depth from sps to detect changes
Definition: h264.h:634
int topleft_type
Definition: h264.h:405
short offset_for_ref_frame[256]
Definition: h264.h:216
int chroma_format_idc
chroma format from sps to detect changes
Definition: h264.h:635
Definition: h264.h:120
VideoDSPContext vdsp
Definition: h264.h:517
int intra16x16_pred_mode
Definition: h264.h:395
int timing_info_present_flag
Definition: h264.h:212
int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count)
Execute the reference picture marking (memory management control operations).
Definition: h264_refs.c:621
int mb_stride
Definition: h264.h:619
int vcl_hrd_parameters_present_flag
Definition: h264.h:223
AVCodecContext * avctx
Definition: h264.h:516
uint8_t zigzag_scan8x8_q0[64]
Definition: h264.h:609
#define MB_TYPE_8x16
Definition: avcodec.h:1242
int last_qscale_diff
Definition: h264.h:382
1: top field
Definition: h264.h:151
void ff_h264_remove_all_refs(H264Context *h)
Definition: h264_refs.c:511
int prev_frame_num
frame_num of the last pic for POC type 1/2
Definition: h264.h:654
H264Picture * short_ref[32]
Definition: h264.h:667
int next_outputed_poc
Definition: h264.h:672
int ff_h264_decode_sei(H264Context *h)
Decode SEI.
Definition: h264_sei.c:421
int poc_msb
Definition: h264.h:646
int field_poc[2]
top/bottom POC
Definition: h264.h:335
int recovery_frame
recovery_frame is the frame_num at which the next frame should be fully constructed.
Definition: h264.h:788
int max_contexts
Max number of threads / contexts.
Definition: h264.h:699
main external API structure.
Definition: avcodec.h:1642
Definition: h264.h:118
int qp_thresh
QP threshold to skip loopfilter.
Definition: h264.h:381
int dpb_output_delay_length
dpb_output_delay_length_minus1 + 1
Definition: h264.h:229
Definition: h264.h:298
int vui_parameters_present_flag
Definition: h264.h:204
2: bottom field
Definition: h264.h:152
#define QP_MAX_NUM
Definition: h264.h:111
uint8_t green_metadata_type
Definition: h264.h:282
void * buf
Definition: avisynth_c.h:553
int resync_mb_y
Definition: h264.h:425
int frame_packing_arrangement_type
Definition: h264.h:730
int8_t * qscale_table
Definition: h264.h:321
int constraint_set_flags
constraint_set[0-3]_flag
Definition: h264.h:233
SEI_PicStructType sei_pic_struct
pic_struct in picture timing SEI message
Definition: h264.h:716
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:1071
int ff_h264_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: h264_slice.c:393
static int get_avc_nalsize(H264Context *h, const uint8_t *buf, int buf_size, int *buf_index)
Definition: h264.h:1156
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:478
uint32_t(*[6] dequant8_coeff)[64]
Definition: h264.h:583
rational number numerator/denominator
Definition: rational.h:43
Definition: h264.h:116
int8_t * ref_index[2]
Definition: h264.h:333
#define MAX_MMCO_COUNT
Definition: h264.h:55
int pixel_shift
0 for 8-bit H264, 1 for high-bit-depth H264
Definition: h264.h:533
int mmco_reset
MMCO_RESET set this 1.
Definition: h264.h:338
int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb, int first_slice)
Definition: h264_refs.c:830
H264Picture * cur_pic_ptr
Definition: h264.h:524
ptrdiff_t mb_uvlinesize
Definition: h264.h:420
int mb_mbaff
mb_aff_frame && mb_field_decoding_flag
Definition: h264.h:432
uint8_t direct_cache[5 *8]
Definition: h264.h:486
AVPictureType
Definition: avutil.h:264
int enable_er
Definition: h264.h:825
display orientation
Definition: h264.h:142
unsigned int sps_id
Definition: h264.h:243
int frame_packing_arrangement_cancel_flag
is previous arrangement canceled, -1 if never received
Definition: h264.h:271
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
Definition: h264.h:185
uint8_t percent_intra_coded_macroblocks
Definition: h264.h:287
6: bottom field, top field, bottom field repeated, in that order
Definition: h264.h:156
int sei_buffering_period_present
Buffering period SEI flag.
Definition: h264.h:814
ptrdiff_t mb_linesize
may be equal to s->linesize or s->linesize * 2, for mbaff
Definition: h264.h:419
int16_t slice_row[MAX_SLICES]
to detect when MAX_SLICES is too low
Definition: h264.h:819
int col_fieldoff
Definition: h264.h:443
ptrdiff_t linesize
Definition: h264.h:418
int block_offset[2 *(16 *3)]
block_offset[ 0..23] for frame macroblocks block_offset[24..47] for field macroblocks ...
Definition: h264.h:567
int quincunx_sampling_flag
Definition: h264.h:275
uint32_t time_scale
Definition: h264.h:214
int linesize[3]
Definition: h264.h:360
int transform_8x8_mode
transform_8x8_mode_flag
Definition: h264.h:257
ptrdiff_t uvlinesize
Definition: h264.h:418
H.264 / AVC / MPEG4 prediction functions.
int pic_struct_present_flag
Definition: h264.h:224
uint8_t zigzag_scan[16]
Definition: h264.h:602
unsigned int list_count
Definition: h264.h:458
picture timing
Definition: h264.h:137
Definition: vp9.h:84
#define AV_ZERO128(d)
Definition: intreadwrite.h:622
uint16_t xsd_metric_value
Definition: h264.h:291
int has_recovery_point
Definition: h264.h:803
uint16_t num_seconds
Definition: h264.h:284
int left_type[LEFT_MBS]
Definition: h264.h:408
int mbaff
1 -> MBAFF frame 0-> not MBAFF
Definition: h264.h:345
A reference to a data buffer.
Definition: buffer.h:81
void ff_h264_flush_change(H264Context *h)
Definition: h264.c:846
int ff_h264_decode_seq_parameter_set(H264Context *h, int ignore_truncation)
Decode SPS.
Definition: h264_ps.c:280
AVBufferPool * qscale_table_pool
Definition: h264.h:827
H264Picture * next_output_pic
Definition: h264.h:671
int slice_context_count
Definition: h264.h:701
AVBufferPool * motion_val_pool
Definition: h264.h:829
int mb_height
pic_height_in_map_units_minus1 + 1
Definition: h264.h:193
int topright_type
Definition: h264.h:407
int init_qs
pic_init_qs_minus26 + 26
Definition: h264.h:252
int pic_id
pic_num (short -> no wrap version of pic_num, pic_num & max_pic_num; long -> long_pic_num) ...
Definition: h264.h:340
uint8_t xsd_metric_type
Definition: h264.h:290
common internal api header.
#define AV_COPY128(d, s)
Definition: intreadwrite.h:594
int nal_hrd_parameters_present_flag
Definition: h264.h:222
uint16_t * slice_table_base
Definition: h264.h:642
size_t data_size
Definition: h264.h:263
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
Definition: h264.h:183
int missing_fields
Definition: h264.h:805
#define MB_TYPE_8x8
Definition: avcodec.h:1243
void ff_h264_fill_mbaff_ref_list(H264Context *h, H264SliceContext *sl)
Definition: h264_refs.c:372
Bi-dir predicted.
Definition: avutil.h:268
const char * ff_h264_sei_stereo_mode(H264Context *h)
Get stereo_mode string from the h264 frame_packing_arrangement.
Definition: h264_sei.c:491
int cur_chroma_format_idc
Definition: h264.h:817
int8_t * intra4x4_pred_mode
Definition: h264.h:398
int long_arg
index, pic_num, or num long refs depending on opcode
Definition: h264.h:313
uint8_t * rbsp_buffer
Definition: h264.h:507
int sei_ct_type
Bit set of clock types for fields/frames in picture timing SEI message.
Definition: h264.h:754
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:462
#define MB_TYPE_16x8
Definition: avcodec.h:1241
Core video DSP helper functions.
int bit_depth_luma
bit_depth_luma_minus8 + 8
Definition: h264.h:230
static av_always_inline int get_chroma_qp(const H264Context *h, int t, int qscale)
Get the chroma qp.
Definition: h264.h:1011
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:651
void ff_h264_set_erpic(ERPicture *dst, H264Picture *src)
Definition: h264_picture.c:131
uint8_t zigzag_scan8x8_cavlc_q0[64]
Definition: h264.h:610
int8_t ref_cache[2][5 *8]
Definition: h264.h:484
Decoded Picture Buffer (DPB).
Definition: vaapi_h264.c:81
#define IS_8X8(a)
Definition: mpegutils.h:91
Frame Packing Arrangement Type.
Definition: h264.h:269
H264Picture cur_pic
Definition: h264.h:525
int sei_display_orientation_present
display orientation SEI message
Definition: h264.h:737
int content_interpretation_type
Definition: h264.h:731
int mb_width
Definition: h264.h:618
enum AVPictureType pict_type
Definition: h264.h:709
void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height)
Definition: h264.c:102
int current_slice
current slice number, used to initialize slice_num of each thread/context
Definition: h264.h:691
buffering period (H.264, D.1.1)
Definition: h264.h:136
int mb_width
pic_width_in_mbs_minus1 + 1
Definition: h264.h:192
int slice_group_count
num_slice_groups_minus1 + 1
Definition: h264.h:246
uint32_t * mb2b_xy
Definition: h264.h:569
H264Ref ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264.h:459
uint8_t field_scan8x8_cavlc_q0[64]
Definition: h264.h:613
int cpb_cnt
See H.264 E.1.2.
Definition: h264.h:226
int cur_bit_depth_luma
Definition: h264.h:818
AVBufferRef * ref_index_buf[2]
Definition: h264.h:332
int delta_poc_bottom
Definition: h264.h:647
H264Picture last_pic_for_ec
Definition: h264.h:526
int au_pps_id
pps_id of current access unit
Definition: h264.h:578
const uint8_t * intra_pcm_ptr
Definition: h264.h:464
H264DSPContext h264dsp
Definition: h264.h:518
int ff_h264_get_profile(SPS *sps)
compute profile from sps
Definition: h264.c:980
int crop_top
Definition: h264.h:355
unsigned int left_samples_available
Definition: h264.h:416
int ref_count[2][2]
number of entries in ref_poc (FIXME need per slice)
Definition: h264.h:344
uint8_t(*[2] mvd_table)[2]
Definition: h264.h:497
uint8_t field_scan8x8[64]
Definition: h264.h:606
int slice_type_fixed
Definition: h264.h:377
Definition: h264.h:117
#define av_always_inline
Definition: attributes.h:39
int slice_beta_offset
Definition: h264.h:387
int8_t * intra4x4_pred_mode
Definition: h264.h:555
int dist_scale_factor_field[2][32]
Definition: h264.h:450
#define height
int cpb_removal_delay_length
cpb_removal_delay_length_minus1 + 1
Definition: h264.h:228
8: frame tripling
Definition: h264.h:158
#define AV_RN64A(p)
Definition: intreadwrite.h:530
uint8_t field_scan_q0[16]
Definition: h264.h:611
#define LIST_NOT_USED
Definition: h264.h:560
int mb_field_decoding_flag
Definition: h264.h:431
uint8_t(* non_zero_count)[48]
Definition: h264.h:558
H.264 decoder/parser shared code.
unsigned int crop_bottom
frame_cropping_rect_bottom_offset
Definition: h264.h:203
uint8_t * bipred_scratchpad
Definition: h264.h:467
float min
Definition: h264.h:121
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
int sei_recovery_frame_cnt
recovery_frame_cnt from SEI message
Definition: h264.h:773
Green MetaData Information Type.
Definition: h264.h:281
int droppable
Definition: h264.h:547
int level_idc
Definition: h264.h:180
int nal_ref_idc
Definition: h264.h:625
GetBitContext gb
Definition: h264.h:371
uint8_t field_scan[16]
Definition: h264.h:605
int cabac_init_idc
Definition: h264.h:504
int b_stride
Definition: h264.h:571
int sei_dpb_output_delay
dpb_output_delay in picture timing SEI message, see H.264 C.2.2
Definition: h264.h:759
recovery point (frame # to decoder sync)
Definition: h264.h:140
Context Adaptive Binary Arithmetic Coder.
int left_cbp
Definition: h264.h:447
GreenMPEG information.
Definition: h264.h:143
int short_ref_count
number of actual short term references
Definition: h264.h:682
void ff_h264_init_dequant_tables(H264Context *h)
Definition: h264_slice.c:327
int mb_slice_group_map_type
Definition: h264.h:247
enum AVColorSpace colorspace
Definition: h264.h:211