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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 / MPEG-4 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/buffer.h"
32 #include "libavutil/intreadwrite.h"
33 #include "libavutil/thread.h"
34 
35 #include "cabac.h"
36 #include "error_resilience.h"
37 #include "h264_parse.h"
38 #include "h264_sei.h"
39 #include "h2645_parse.h"
40 #include "h264chroma.h"
41 #include "h264dsp.h"
42 #include "h264pred.h"
43 #include "h264qpel.h"
44 #include "internal.h"
45 #include "mpegutils.h"
46 #include "parser.h"
47 #include "qpeldsp.h"
48 #include "rectangle.h"
49 #include "videodsp.h"
50 
51 #define H264_MAX_PICTURE_COUNT 36
52 
53 #define MAX_SPS_COUNT 32
54 #define MAX_PPS_COUNT 256
55 
56 #define MAX_MMCO_COUNT 66
57 
58 #define MAX_DELAYED_PIC_COUNT 16
59 
60 #define MAX_MBPAIR_SIZE (256*1024) // a tighter bound could be calculated if someone cares about a few bytes
61 
62 /* Compiling in interlaced support reduces the speed
63  * of progressive decoding by about 2%. */
64 #define ALLOW_INTERLACE
65 
66 #define FMO 0
67 
68 /**
69  * The maximum number of slices supported by the decoder.
70  * must be a power of 2
71  */
72 #define MAX_SLICES 32
73 
74 #ifdef ALLOW_INTERLACE
75 #define MB_MBAFF(h) (h)->mb_mbaff
76 #define MB_FIELD(sl) (sl)->mb_field_decoding_flag
77 #define FRAME_MBAFF(h) (h)->mb_aff_frame
78 #define FIELD_PICTURE(h) ((h)->picture_structure != PICT_FRAME)
79 #define LEFT_MBS 2
80 #define LTOP 0
81 #define LBOT 1
82 #define LEFT(i) (i)
83 #else
84 #define MB_MBAFF(h) 0
85 #define MB_FIELD(sl) 0
86 #define FRAME_MBAFF(h) 0
87 #define FIELD_PICTURE(h) 0
88 #undef IS_INTERLACED
89 #define IS_INTERLACED(mb_type) 0
90 #define LEFT_MBS 1
91 #define LTOP 0
92 #define LBOT 0
93 #define LEFT(i) 0
94 #endif
95 #define FIELD_OR_MBAFF_PICTURE(h) (FRAME_MBAFF(h) || FIELD_PICTURE(h))
96 
97 #ifndef CABAC
98 #define CABAC(h) (h)->ps.pps->cabac
99 #endif
100 
101 #define CHROMA(h) ((h)->ps.sps->chroma_format_idc)
102 #define CHROMA422(h) ((h)->ps.sps->chroma_format_idc == 2)
103 #define CHROMA444(h) ((h)->ps.sps->chroma_format_idc == 3)
104 
105 #define EXTENDED_SAR 255
106 
107 #define MB_TYPE_REF0 MB_TYPE_ACPRED // dirty but it fits in 16 bit
108 #define MB_TYPE_8x8DCT 0x01000000
109 #define IS_REF0(a) ((a) & MB_TYPE_REF0)
110 #define IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT)
111 
112 #define QP_MAX_NUM (51 + 6*6) // The maximum supported qp
113 
114 /* NAL unit types */
115 enum {
117  NAL_DPA = 2,
118  NAL_DPB = 3,
119  NAL_DPC = 4,
121  NAL_SEI = 6,
122  NAL_SPS = 7,
123  NAL_PPS = 8,
124  NAL_AUD = 9,
130  NAL_FF_IGNORE = 0xff0f001,
131 };
132 
133 /**
134  * Sequence parameter set
135  */
136 typedef struct SPS {
137  unsigned int sps_id;
141  int transform_bypass; ///< qpprime_y_zero_transform_bypass_flag
142  int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4
143  int poc_type; ///< pic_order_cnt_type
144  int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4
148  int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle
149  int ref_frame_count; ///< num_ref_frames
151  int mb_width; ///< pic_width_in_mbs_minus1 + 1
152  int mb_height; ///< pic_height_in_map_units_minus1 + 1
154  int mb_aff; ///< mb_adaptive_frame_field_flag
156  int crop; ///< frame_cropping_flag
157 
158  /* those 4 are already in luma samples */
159  unsigned int crop_left; ///< frame_cropping_rect_left_offset
160  unsigned int crop_right; ///< frame_cropping_rect_right_offset
161  unsigned int crop_top; ///< frame_cropping_rect_top_offset
162  unsigned int crop_bottom; ///< frame_cropping_rect_bottom_offset
173  uint32_t time_scale;
175  short offset_for_ref_frame[256]; // FIXME dyn aloc?
185  int cpb_cnt; ///< See H.264 E.1.2
186  int initial_cpb_removal_delay_length; ///< initial_cpb_removal_delay_length_minus1 + 1
187  int cpb_removal_delay_length; ///< cpb_removal_delay_length_minus1 + 1
188  int dpb_output_delay_length; ///< dpb_output_delay_length_minus1 + 1
189  int bit_depth_luma; ///< bit_depth_luma_minus8 + 8
190  int bit_depth_chroma; ///< bit_depth_chroma_minus8 + 8
191  int residual_color_transform_flag; ///< residual_colour_transform_flag
192  int constraint_set_flags; ///< constraint_set[0-3]_flag
193  uint8_t data[4096];
194  size_t data_size;
195 } SPS;
196 
197 /**
198  * Picture parameter set
199  */
200 typedef struct PPS {
201  unsigned int sps_id;
202  int cabac; ///< entropy_coding_mode_flag
203  int pic_order_present; ///< pic_order_present_flag
204  int slice_group_count; ///< num_slice_groups_minus1 + 1
206  unsigned int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1
207  int weighted_pred; ///< weighted_pred_flag
209  int init_qp; ///< pic_init_qp_minus26 + 26
210  int init_qs; ///< pic_init_qs_minus26 + 26
212  int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag
213  int constrained_intra_pred; ///< constrained_intra_pred_flag
214  int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag
215  int transform_8x8_mode; ///< transform_8x8_mode_flag
218  uint8_t chroma_qp_table[2][QP_MAX_NUM+1]; ///< pre-scaled (with chroma_qp_index_offset) version of qp_table
220  uint8_t data[4096];
221  size_t data_size;
222 
223  uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16];
224  uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64];
225  uint32_t(*dequant4_coeff[6])[16];
226  uint32_t(*dequant8_coeff[6])[64];
227 } PPS;
228 
229 typedef struct H264ParamSets {
232 
235  /* currently active parameters sets */
236  const PPS *pps;
237  const SPS *sps;
238 } H264ParamSets;
239 
240 /**
241  * Memory management control operation opcode.
242  */
243 typedef enum MMCOOpcode {
244  MMCO_END = 0,
251 } MMCOOpcode;
252 
253 /**
254  * Memory management control operation.
255  */
256 typedef struct MMCO {
258  int short_pic_num; ///< pic_num without wrapping (pic_num & max_pic_num)
259  int long_arg; ///< index, pic_num, or num long refs depending on opcode
260 } MMCO;
261 
262 typedef struct H264Picture {
265 
267  int8_t *qscale_table;
268 
270  int16_t (*motion_val[2])[2];
271 
273  uint32_t *mb_type;
274 
276  void *hwaccel_picture_private; ///< hardware accelerator private data
277 
279  int8_t *ref_index[2];
280 
281  int field_poc[2]; ///< top/bottom POC
282  int poc; ///< frame POC
283  int frame_num; ///< frame_num (raw frame_num from slice header)
284  int mmco_reset; /**< MMCO_RESET set this 1. Reordering code must
285  not mix pictures before and after MMCO_RESET. */
286  int pic_id; /**< pic_num (short -> no wrap version of pic_num,
287  pic_num & max_pic_num; long -> long_pic_num) */
288  int long_ref; ///< 1->long term reference 0->short term reference
289  int ref_poc[2][2][32]; ///< POCs of the frames/fields used as reference (FIXME need per slice)
290  int ref_count[2][2]; ///< number of entries in ref_poc (FIXME need per slice)
291  int mbaff; ///< 1 -> MBAFF frame 0-> not MBAFF
292  int field_picture; ///< whether or not picture was encoded in separate fields
293 
295  int recovered; ///< picture at IDR or recovery point + recovery count
298 
299  int crop;
301  int crop_top;
302 } H264Picture;
303 
304 typedef struct H264Ref {
306  int linesize[3];
307 
309  int poc;
310  int pic_id;
311 
313 } H264Ref;
314 
315 typedef struct H264SliceContext {
316  struct H264Context *h264;
319 
322  int slice_type_nos; ///< S free slice type (SI/SP are remapped to I/P)
324 
325  int qscale;
326  int chroma_qp[2]; // QPc
327  int qp_thresh; ///< QP threshold to skip loopfilter
329 
330  // deblock
331  int deblocking_filter; ///< disable_deblocking_filter_idc with 1 <-> 0
334 
336 
339 
342 
345 
350 
352  int top_type;
355 
358 
360  unsigned int top_samples_available;
363 
364  ptrdiff_t linesize, uvlinesize;
365  ptrdiff_t mb_linesize; ///< may be equal to s->linesize or s->linesize * 2, for mbaff
366  ptrdiff_t mb_uvlinesize;
367 
368  int mb_x, mb_y;
369  int mb_xy;
372  unsigned int first_mb_addr;
373  // index of the first MB of the next slice
377 
380  int mb_mbaff; ///< mb_aff_frame && mb_field_decoding_flag
381 
383 
384  /**
385  * number of neighbors (top and/or left) that used 8x8 dct
386  */
388 
392 
393  int cbp;
394  int top_cbp;
395  int left_cbp;
396 
399  int map_col_to_list0[2][16 + 32];
400  int map_col_to_list0_field[2][2][16 + 32];
401 
402  /**
403  * num_ref_idx_l0/1_active_minus1 + 1
404  */
405  unsigned int ref_count[2]; ///< counts frames or fields, depending on current mb mode
406  unsigned int list_count;
407  H264Ref ref_list[2][48]; /**< 0..15: frame refs, 16..47: mbaff field refs.
408  * Reordered version of default_ref_list
409  * according to picture reordering in slice header */
410  struct {
412  uint32_t val;
413  } ref_modifications[2][32];
415 
416  unsigned int pps_id;
417 
419  int16_t *dc_val_base;
420 
423  uint8_t (*top_borders[2])[(16 * 3) * 2];
427 
428  /**
429  * non zero coeff count cache.
430  * is 64 if not available.
431  */
433 
434  /**
435  * Motion vector cache.
436  */
437  DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2];
438  DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8];
439  DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5 * 8][2];
441 
442  DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4];
443 
444  ///< as a DCT coefficient is int32_t in high depth, we need to reserve twice the space.
445  DECLARE_ALIGNED(16, int16_t, mb)[16 * 48 * 2];
446  DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2];
447  ///< as mb is addressed by scantable[i] and scantable is uint8_t we can either
448  ///< check that i is not too large or ensure that there is some unused stuff after mb
449  int16_t mb_padding[256 * 2];
450 
451  uint8_t (*mvd_table[2])[2];
452 
453  /**
454  * Cabac
455  */
459 
461  int nb_mmco;
464 
465 /**
466  * H264Context
467  */
468 typedef struct H264Context {
469  const AVClass *class;
475 
480 
483 
485 
486  int pixel_shift; ///< 0 for 8-bit H.264, 1 for high-bit-depth H.264
487 
488  /* coded dimensions -- 16 * mb w/h */
489  int width, height;
491 
492  /**
493  * Backup frame properties: needed, because they can be different
494  * between returned frame and last decoded frame.
495  **/
499 
502 
504  int flags;
506  /* Set when slice threading is used and at least one slice uses deblocking
507  * mode 1 (i.e. across slice boundaries). Then we disable the loop filter
508  * during normal MB decoding and execute it serially at the end.
509  */
511 
514 
516 
517 #define LIST_NOT_USED -1 // FIXME rename?
518 #define PART_NOT_AVAILABLE -2
519 
520  /**
521  * block_offset[ 0..23] for frame macroblocks
522  * block_offset[24..47] for field macroblocks
523  */
524  int block_offset[2 * (16 * 3)];
525 
526  uint32_t *mb2b_xy; // FIXME are these 4 a good idea?
527  uint32_t *mb2br_xy;
528  int b_stride; // FIXME use s->b4_stride
529 
530  uint16_t *slice_table; ///< slice_table_base + 2*mb_stride + 1
531 
532  // interlacing specific flags
536 
537  uint8_t *list_counts; ///< Array of list_count per MB specifying the slice type
538 
539  /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0, 1, 2), 0x0? luma_cbp */
540  uint16_t *cbp_table;
541 
542  /* chroma_pred_mode for i4x4 or i16x16, else 0 */
544  uint8_t (*mvd_table[2])[2];
546 
559 
560  int mb_y;
563  int mb_num;
564 
565  // =============================================================
566  // Things below are not used in the MB or more inner code
567 
570 
571  /**
572  * Used to parse AVC variant of H.264
573  */
574  int is_avc; ///< this flag is != 0 if codec is avc1
575  int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
576 
577  int bit_depth_luma; ///< luma bit depth from sps to detect changes
578  int chroma_format_idc; ///< chroma format from sps to detect changes
579 
581 
582  uint16_t *slice_table_base;
583 
585 
586  /**
587  * frame_num for frames or 2 * frame_num + 1 for field pics.
588  */
590 
591  /**
592  * max_frame_num or 2 * max_frame_num for field pics.
593  */
595 
603 
604  /**
605  * memory management control operations buffer.
606  */
608  int nb_mmco;
611 
612  int long_ref_count; ///< number of actual long term references
613  int short_ref_count; ///< number of actual short term references
614 
615  /**
616  * @name Members for slice based multithreading
617  * @{
618  */
619  /**
620  * current slice number, used to initialize slice_num of each thread/context
621  */
623 
624  /**
625  * Max number of threads / contexts.
626  * This is equal to AVCodecContext.thread_count unless
627  * multithreaded decoding is impossible, in which case it is
628  * reduced to 1.
629  */
631 
632  /**
633  * 1 if the single thread fallback warning has already been
634  * displayed, 0 otherwise.
635  */
637 
638  /** @} */
639 
640  /**
641  * Complement sei_pic_struct
642  * SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced frames.
643  * However, soft telecined frames may have these values.
644  * This is used in an attempt to flag soft telecine progressive.
645  */
647 
648  /**
649  * Are the SEI recovery points looking valid.
650  */
652 
653  /**
654  * recovery_frame is the frame_num at which the next frame should
655  * be fully constructed.
656  *
657  * Set to -1 when not expecting a recovery point.
658  */
660 
661 /**
662  * We have seen an IDR, so all the following frames in coded order are correctly
663  * decodable.
664  */
665 #define FRAME_RECOVERED_IDR (1 << 0)
666 /**
667  * Sufficient number of frames have been decoded since a SEI recovery point,
668  * so all the following frames in presentation order are correct.
669  */
670 #define FRAME_RECOVERED_SEI (1 << 1)
671 
672  int frame_recovered; ///< Initial frame has been completely recovered
673 
675 
677 
678  /* for frame threading, this is set to 1
679  * after finish_setup() has been called, so we cannot modify
680  * some context properties (which are supposed to stay constant between
681  * slices) anymore */
683 
686  int16_t slice_row[MAX_SLICES]; ///< to detect when MAX_SLICES is too low
687 
689 
691 
696  int ref2frm[MAX_SLICES][2][64]; ///< reference to frame number lists, used in the loop filter, the first 2 are for -2,-1
697 } H264Context;
698 
699 extern const uint16_t ff_h264_mb_sizes[4];
700 
701 /**
702  * Uninit H264 param sets structure.
703  */
704 
706 
707 /**
708  * Decode SPS
709  */
711  H264ParamSets *ps, int ignore_truncation);
712 
713 /**
714  * Decode PPS
715  */
717  H264ParamSets *ps, int bit_length);
718 
719 /**
720  * Reconstruct bitstream slice_type.
721  */
723 
724 /**
725  * Allocate tables.
726  * needs width/height
727  */
729 
733 
734 /**
735  * Execute the reference picture marking (memory management control operations).
736  */
738 
740  GetBitContext *gb);
741 
744 void ff_h264_decode_init_vlc(void);
745 
746 /**
747  * Decode a macroblock
748  * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
749  */
751 
752 /**
753  * Decode a CABAC coded macroblock
754  * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
755  */
757 
759 
763  int *mb_type);
764 
765 void ff_h264_filter_mb_fast(const H264Context *h, H264SliceContext *sl, int mb_x, int mb_y,
766  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
767  unsigned int linesize, unsigned int uvlinesize);
768 void ff_h264_filter_mb(const H264Context *h, H264SliceContext *sl, int mb_x, int mb_y,
769  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
770  unsigned int linesize, unsigned int uvlinesize);
771 
772 /*
773  * o-o o-o
774  * / / /
775  * o-o o-o
776  * ,---'
777  * o-o o-o
778  * / / /
779  * o-o o-o
780  */
781 
782 /* Scan8 organization:
783  * 0 1 2 3 4 5 6 7
784  * 0 DY y y y y y
785  * 1 y Y Y Y Y
786  * 2 y Y Y Y Y
787  * 3 y Y Y Y Y
788  * 4 y Y Y Y Y
789  * 5 DU u u u u u
790  * 6 u U U U U
791  * 7 u U U U U
792  * 8 u U U U U
793  * 9 u U U U U
794  * 10 DV v v v v v
795  * 11 v V V V V
796  * 12 v V V V V
797  * 13 v V V V V
798  * 14 v V V V V
799  * DY/DU/DV are for luma/chroma DC.
800  */
801 
802 #define LUMA_DC_BLOCK_INDEX 48
803 #define CHROMA_DC_BLOCK_INDEX 49
804 
805 // This table must be here because scan8[constant] must be known at compiletime
806 static const uint8_t scan8[16 * 3 + 3] = {
807  4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8,
808  6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8,
809  4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8,
810  6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8,
811  4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8,
812  6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8,
813  4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8,
814  6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8,
815  4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8,
816  6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8,
817  4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8,
818  6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8,
819  0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8
820 };
821 
822 static av_always_inline uint32_t pack16to32(unsigned a, unsigned b)
823 {
824 #if HAVE_BIGENDIAN
825  return (b & 0xFFFF) + (a << 16);
826 #else
827  return (a & 0xFFFF) + (b << 16);
828 #endif
829 }
830 
831 static av_always_inline uint16_t pack8to16(unsigned a, unsigned b)
832 {
833 #if HAVE_BIGENDIAN
834  return (b & 0xFF) + (a << 8);
835 #else
836  return (a & 0xFF) + (b << 8);
837 #endif
838 }
839 
840 /**
841  * Get the chroma qp.
842  */
843 static av_always_inline int get_chroma_qp(const PPS *pps, int t, int qscale)
844 {
845  return pps->chroma_qp_table[t][qscale];
846 }
847 
848 /**
849  * Get the predicted intra4x4 prediction mode.
850  */
852  H264SliceContext *sl, int n)
853 {
854  const int index8 = scan8[n];
855  const int left = sl->intra4x4_pred_mode_cache[index8 - 1];
856  const int top = sl->intra4x4_pred_mode_cache[index8 - 8];
857  const int min = FFMIN(left, top);
858 
859  ff_tlog(h->avctx, "mode:%d %d min:%d\n", left, top, min);
860 
861  if (min < 0)
862  return DC_PRED;
863  else
864  return min;
865 }
866 
868  H264SliceContext *sl)
869 {
870  int8_t *i4x4 = sl->intra4x4_pred_mode + h->mb2br_xy[sl->mb_xy];
871  int8_t *i4x4_cache = sl->intra4x4_pred_mode_cache;
872 
873  AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
874  i4x4[4] = i4x4_cache[7 + 8 * 3];
875  i4x4[5] = i4x4_cache[7 + 8 * 2];
876  i4x4[6] = i4x4_cache[7 + 8 * 1];
877 }
878 
880  H264SliceContext *sl)
881 {
882  const int mb_xy = sl->mb_xy;
883  uint8_t *nnz = h->non_zero_count[mb_xy];
884  uint8_t *nnz_cache = sl->non_zero_count_cache;
885 
886  AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]);
887  AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]);
888  AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]);
889  AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]);
890  AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]);
891  AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]);
892  AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]);
893  AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]);
894 
895  if (!h->chroma_y_shift) {
896  AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]);
897  AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]);
898  AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]);
899  AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]);
900  }
901 }
902 
904  H264SliceContext *sl,
905  int b_stride,
906  int b_xy, int b8_xy,
907  int mb_type, int list)
908 {
909  int16_t(*mv_dst)[2] = &h->cur_pic.motion_val[list][b_xy];
910  int16_t(*mv_src)[2] = &sl->mv_cache[list][scan8[0]];
911  AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0);
912  AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1);
913  AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2);
914  AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3);
915  if (CABAC(h)) {
916  uint8_t (*mvd_dst)[2] = &sl->mvd_table[list][FMO ? 8 * sl->mb_xy
917  : h->mb2br_xy[sl->mb_xy]];
918  uint8_t(*mvd_src)[2] = &sl->mvd_cache[list][scan8[0]];
919  if (IS_SKIP(mb_type)) {
920  AV_ZERO128(mvd_dst);
921  } else {
922  AV_COPY64(mvd_dst, mvd_src + 8 * 3);
923  AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0);
924  AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1);
925  AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2);
926  }
927  }
928 
929  {
930  int8_t *ref_index = &h->cur_pic.ref_index[list][b8_xy];
931  int8_t *ref_cache = sl->ref_cache[list];
932  ref_index[0 + 0 * 2] = ref_cache[scan8[0]];
933  ref_index[1 + 0 * 2] = ref_cache[scan8[4]];
934  ref_index[0 + 1 * 2] = ref_cache[scan8[8]];
935  ref_index[1 + 1 * 2] = ref_cache[scan8[12]];
936  }
937 }
938 
940  H264SliceContext *sl,
941  int mb_type)
942 {
943  const int b_stride = h->b_stride;
944  const int b_xy = 4 * sl->mb_x + 4 * sl->mb_y * h->b_stride; // try mb2b(8)_xy
945  const int b8_xy = 4 * sl->mb_xy;
946 
947  if (USES_LIST(mb_type, 0)) {
948  write_back_motion_list(h, sl, b_stride, b_xy, b8_xy, mb_type, 0);
949  } else {
950  fill_rectangle(&h->cur_pic.ref_index[0][b8_xy],
951  2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
952  }
953  if (USES_LIST(mb_type, 1))
954  write_back_motion_list(h, sl, b_stride, b_xy, b8_xy, mb_type, 1);
955 
956  if (sl->slice_type_nos == AV_PICTURE_TYPE_B && CABAC(h)) {
957  if (IS_8X8(mb_type)) {
958  uint8_t *direct_table = &h->direct_table[4 * sl->mb_xy];
959  direct_table[1] = sl->sub_mb_type[1] >> 1;
960  direct_table[2] = sl->sub_mb_type[2] >> 1;
961  direct_table[3] = sl->sub_mb_type[3] >> 1;
962  }
963  }
964 }
965 
967 {
969  return !(AV_RN64A(sl->sub_mb_type) &
971  0x0001000100010001ULL));
972  else
973  return !(AV_RN64A(sl->sub_mb_type) &
975  0x0001000100010001ULL));
976 }
977 
978 static inline int find_start_code(const uint8_t *buf, int buf_size,
979  int buf_index, int next_avc)
980 {
981  uint32_t state = -1;
982 
983  buf_index = avpriv_find_start_code(buf + buf_index, buf + next_avc + 1, &state) - buf - 1;
984 
985  return FFMIN(buf_index, buf_size);
986 }
987 
988 int ff_h264_field_end(H264Context *h, H264SliceContext *sl, int in_setup);
989 
992 
994 
995 void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height);
996 
998  const H2645NAL *nal);
999 #define SLICE_SINGLETHREAD 1
1000 #define SLICE_SKIPED 2
1001 
1002 int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count);
1004  const AVCodecContext *src);
1005 
1007 
1009 
1011 
1012 #endif /* AVCODEC_H264_H */
int chroma_format_idc
Definition: h264.h:140
struct H264Context * h264
Definition: h264.h:316
int video_signal_type_present_flag
Definition: h264.h:165
const uint8_t * left_block
Definition: h264.h:356
#define ff_tlog(ctx,...)
Definition: internal.h:65
void ff_h264_unref_picture(H264Context *h, H264Picture *pic)
Definition: h264_picture.c:46
Memory management control operation.
Definition: h264.h:256
int nb_mmco
Definition: h264.h:608
int workaround_bugs
Definition: h264.h:505
int long_ref
1->long term reference 0->short term reference
Definition: h264.h:288
int single_decode_warning
1 if the single thread fallback warning has already been displayed, 0 otherwise.
Definition: h264.h:636
int col_parity
Definition: h264.h:390
int sei_recovery_frame_cnt
Definition: h264.h:297
int ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
Init context Allocate buffers which are not shared amongst multiple threads.
Definition: h264.c:238
enum AVPixelFormat backup_pix_fmt
Definition: h264.h:498
int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count)
Call decode_slice() for each context.
Definition: h264_slice.c:2397
int16_t mb[16 *48 *2]
Definition: h264.h:445
int topright_mb_xy
Definition: h264.h:348
H264POCContext poc
Definition: h264.h:584
int mb_num
Definition: h264.h:563
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
int mb_aff_frame
Definition: h264.h:533
int topleft_partition
Definition: h264.h:357
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
Definition: h264.h:437
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:387
int dist_scale_factor[32]
Definition: h264.h:397
#define LEFT_MBS
Definition: h264.h:79
int edge_emu_buffer_allocated
Definition: h264.h:425
#define H264_MAX_PICTURE_COUNT
Definition: h264.h:51
int first_field
Definition: h264.h:535
int ff_h264_decode_mb_cavlc(const H264Context *h, H264SliceContext *sl)
Decode a macroblock.
Definition: h264_cavlc.c:702
uint8_t field_scan8x8_q0[64]
Definition: h264.h:557
int weighted_bipred_idc
Definition: h264.h:208
int left_mb_xy[LEFT_MBS]
Definition: h264.h:349
int chroma_qp_index_offset[2]
Definition: h264.h:211
AVBufferRef * sps_list[MAX_SPS_COUNT]
Definition: h264.h:230
unsigned int topleft_samples_available
Definition: h264.h:359
H264ChromaContext h264chroma
Definition: h264.h:473
uint16_t * cbp_table
Definition: h264.h:540
int scaling_matrix_present
Definition: h264.h:178
MMCO mmco[MAX_MMCO_COUNT]
memory management control operations buffer.
Definition: h264.h:607
uint8_t scaling_matrix4[6][16]
Definition: h264.h:179
uint8_t mvd_cache[2][5 *8][2]
Definition: h264.h:439
#define MAX_PPS_COUNT
Definition: h264.h:54
Sequence parameter set.
Definition: h264.h:136
int mb_y
Definition: h264.h:560
int coded_picture_number
Definition: h264.h:501
int bitstream_restriction_flag
Definition: h264.h:176
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:206
#define FMO
Definition: h264.h:66
AVBufferRef * mb_type_buf
Definition: h264.h:272
int bipred_scratchpad_allocated
Definition: h264.h:424
const char * b
Definition: vf_curves.c:113
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:693
int chroma_x_shift
Definition: h264.h:490
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:200
int prev_mb_skipped
Definition: h264.h:337
int crop
Definition: h264.h:299
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:53
int16_t(*[2] motion_val)[2]
Definition: h264.h:270
int flags
Definition: h264.h:504
int frame_mbs_only_flag
Definition: h264.h:153
int mb_height
Definition: h264.h:561
H264Picture * delayed_pic[MAX_DELAYED_PIC_COUNT+2]
Definition: h264.h:599
int is_avc
Used to parse AVC variant of H.264.
Definition: h264.h:574
H264Ref default_ref[2]
Definition: h264.h:596
AVBufferPool * ref_index_pool
Definition: h264.h:695
MMCOOpcode
Memory management control operation opcode.
Definition: h264.h:243
uint8_t zigzag_scan8x8_cavlc[64]
Definition: h264.h:549
int next_slice_idx
Definition: h264.h:374
void ff_h264_decode_init_vlc(void)
Definition: h264_cavlc.c:327
H264Context.
Definition: h264.h:468
int16_t mb_padding[256 *2]
Definition: h264.h:449
static av_always_inline void write_back_motion(const H264Context *h, H264SliceContext *sl, int mb_type)
Definition: h264.h:939
AVFrame * f
Definition: h264.h:263
static av_always_inline void write_back_non_zero_count(const H264Context *h, H264SliceContext *sl)
Definition: h264.h:879
int chroma_qp_diff
Definition: h264.h:219
int ff_h264_decode_slice_header(H264Context *h, H264SliceContext *sl, const H2645NAL *nal)
Decode a slice header.
Definition: h264_slice.c:1659
uint32_t num_units_in_tick
Definition: h264.h:172
int nb_ref_modifications[2]
Definition: h264.h:414
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)
H264Picture * long_ref[32]
Definition: h264.h:598
int picture_structure
Definition: h264.h:534
#define AV_COPY32(d, s)
Definition: intreadwrite.h:586
int profile_idc
Definition: h264.h:138
MMCOOpcode opcode
Definition: h264.h:257
AVColorTransferCharacteristic
Color Transfer Characteristic.
Definition: pixfmt.h:410
H.264 DSP functions.
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:405
MMCO mmco[MAX_MMCO_COUNT]
Definition: h264.h:460
int topleft_mb_xy
Definition: h264.h:346
uint8_t * chroma_pred_mode_table
Definition: h264.h:543
int setup_finished
Definition: h264.h:682
H264SEIContext sei
Definition: h264.h:690
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:161
#define USES_LIST(a, list)
Definition: mpegutils.h:101
int fixed_frame_rate_flag
Definition: h264.h:174
static av_always_inline uint16_t pack8to16(unsigned a, unsigned b)
Definition: h264.h:831
int is_complex
Definition: h264.h:376
uint8_t scaling_matrix4[6][16]
Definition: h264.h:216
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:696
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
Definition: h264.h:212
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:442
int short_pic_num
pic_num without wrapping (pic_num & max_pic_num)
Definition: h264.h:258
Definition: h264.h:304
const PPS * pps
Definition: h264.h:236
uint8_t
int full_range
Definition: h264.h:166
unsigned int crop_left
frame_cropping_rect_left_offset
Definition: h264.h:159
int offset_for_non_ref_pic
Definition: h264.h:146
int gaps_in_frame_num_allowed_flag
Definition: h264.h:150
int slice_alpha_c0_offset
Definition: h264.h:332
int poc
Definition: h264.h:309
int field_picture
whether or not picture was encoded in separate fields
Definition: h264.h:292
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
Definition: h264.h:190
AVColorSpace
YUV colorspace type.
Definition: pixfmt.h:436
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
Definition: h264.c:180
enum AVColorPrimaries color_primaries
Definition: h264.h:168
int poc
frame POC
Definition: h264.h:282
void ff_h264_direct_dist_scale_factor(const H264Context *const h, H264SliceContext *sl)
Definition: h264_direct.c:51
int slice_type
Definition: h264.h:321
int cabac
entropy_coding_mode_flag
Definition: h264.h:202
static int find_start_code(const uint8_t *buf, int buf_size, int buf_index, int next_avc)
Definition: h264.h:978
unsigned int crop_right
frame_cropping_rect_right_offset
Definition: h264.h:160
uint8_t(*[2] top_borders)[(16 *3)*2]
Definition: h264.h:423
int invalid_gap
Definition: h264.h:296
Context for storing H.264 prediction functions.
Definition: h264pred.h:92
uint32_t(*[6] dequant4_coeff)[16]
Definition: h264.h:225
quarterpel DSP functions
int frame_recovered
Initial frame has been completely recovered.
Definition: h264.h:672
int map_col_to_list0_field[2][2][16+32]
Definition: h264.h:400
int height
Definition: h264.h:489
static av_always_inline int pred_intra_mode(const H264Context *h, H264SliceContext *sl, int n)
Get the predicted intra4x4 prediction mode.
Definition: h264.h:851
#define height
int transform_bypass
qpprime_y_zero_transform_bypass_flag
Definition: h264.h:141
uint32_t(*[6] dequant8_coeff)[64]
Definition: h264.h:226
int picture_structure
Definition: h264.h:378
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
Definition: h264.h:214
int chroma_y_shift
Definition: h264.h:490
#define MAX_DELAYED_PIC_COUNT
Definition: h264.h:58
static void fill_rectangle(SDL_Surface *screen, int x, int y, int w, int h, int color, int update)
Definition: ffplay.c:801
AVBufferRef * qscale_table_buf
Definition: h264.h:266
H264Picture * parent
Definition: h264.h:312
int ff_h264_decode_mb_cabac(const H264Context *h, H264SliceContext *sl)
Decode a CABAC coded macroblock.
Definition: h264_cabac.c:1914
AVColorPrimaries
Chromaticity coordinates of the source primaries.
Definition: pixfmt.h:391
int recovered
picture at IDR or recovery point + recovery count
Definition: h264.h:295
#define AV_COPY64(d, s)
Definition: intreadwrite.h:590
int chroma_qp[2]
Definition: h264.h:326
Definition: h264.h:123
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:370
int last_pocs[MAX_DELAYED_PIC_COUNT]
Definition: h264.h:600
int width
Definition: h264.h:489
#define MAX_SLICES
The maximum number of slices supported by the decoder.
Definition: h264.h:72
int slice_num
Definition: h264.h:320
unsigned int topright_samples_available
Definition: h264.h:361
void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl)
Definition: h264_mb.c:798
enum AVColorTransferCharacteristic color_trc
Definition: h264.h:169
int mb_aff
mb_adaptive_frame_field_flag
Definition: h264.h:154
H264PredContext hpc
Definition: h264.h:513
AVBufferRef * sps_ref
Definition: h264.h:234
int ff_h264_decode_ref_pic_list_reordering(const H264Context *h, H264SliceContext *sl)
Definition: h264_refs.c:420
static av_always_inline int get_dct8x8_allowed(const H264Context *h, H264SliceContext *sl)
Definition: h264.h:966
int16_t * dc_val_base
Definition: h264.h:419
int poc_type
pic_order_cnt_type
Definition: h264.h:143
int context_initialized
Definition: h264.h:503
static av_always_inline void write_back_intra_pred_mode(const H264Context *h, H264SliceContext *sl)
Definition: h264.h:867
int constrained_intra_pred
constrained_intra_pred_flag
Definition: h264.h:213
ERContext er
Definition: h264.h:318
int nal_unit_type
Definition: h264.h:569
int num_reorder_frames
Definition: h264.h:177
void * hwaccel_picture_private
hardware accelerator private data
Definition: h264.h:276
int backup_height
Definition: h264.h:497
int map_col_to_list0[2][16+32]
Definition: h264.h:399
int time_offset_length
Definition: h264.h:184
int8_t intra4x4_pred_mode_cache[5 *8]
Definition: h264.h:343
int backup_width
Backup frame properties: needed, because they can be different between returned frame and last decode...
Definition: h264.h:496
H2645Packet pkt
Definition: h264.h:484
int deblocking_filter
disable_deblocking_filter_idc with 1 <-> 0
Definition: h264.h:331
uint8_t(*[2] mvd_table)[2]
Definition: h264.h:544
int prev_interlaced_frame
Complement sei_pic_struct SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced...
Definition: h264.h:646
int ref_poc[2][2][32]
POCs of the frames/fields used as reference (FIXME need per slice)
Definition: h264.h:289
ThreadFrame tf
Definition: h264.h:264
int weighted_pred
weighted_pred_flag
Definition: h264.h:207
#define IS_SKIP(a)
Definition: mpegutils.h:83
H264QpelContext h264qpel
Definition: h264.h:474
int direct_spatial_mv_pred
Definition: h264.h:389
#define CABAC(h)
Definition: h264.h:98
unsigned int top_samples_available
Definition: h264.h:360
int frame_num
frame_num (raw frame_num from slice header)
Definition: h264.h:283
static av_always_inline uint32_t pack16to32(unsigned a, unsigned b)
Definition: h264.h:822
int valid_recovery_point
Are the SEI recovery points looking valid.
Definition: h264.h:651
int residual_color_transform_flag
residual_colour_transform_flag
Definition: h264.h:191
uint8_t * list_counts
Array of list_count per MB specifying the slice type.
Definition: h264.h:537
int delta_pic_order_always_zero_flag
Definition: h264.h:145
int offset_for_top_to_bottom_field
Definition: h264.h:147
int slice_type_nos
S free slice type (SI/SP are remapped to I/P)
Definition: h264.h:322
uint8_t zigzag_scan8x8[64]
Definition: h264.h:548
int mb_skip_run
Definition: h264.h:375
AVBufferRef * hwaccel_priv_buf
Definition: h264.h:275
static const uint8_t scan8[16 *3+3]
Definition: h264.h:806
const uint16_t ff_h264_mb_sizes[4]
Definition: h264.c:58
int crop_left
Definition: h264.h:300
uint8_t cabac_state[1024]
Definition: h264.h:457
int crop
frame_cropping_flag
Definition: h264.h:156
int ff_h264_decode_init(AVCodecContext *avctx)
Definition: h264.c:392
int pic_id
Definition: h264.h:310
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:446
uint8_t * direct_table
Definition: h264.h:545
uint8_t scaling_matrix8[6][64]
Definition: h264.h:217
int nal_length_size
Number of bytes used for nal length (1, 2 or 4)
Definition: h264.h:575
useful rectangle filling function
size_t data_size
Definition: h264.h:194
AVBufferRef * motion_val_buf[2]
Definition: h264.h:269
Context for storing H.264 DSP functions.
Definition: h264dsp.h:41
int ref_frame_count
num_ref_frames
Definition: h264.h:149
int chroma_pred_mode
Definition: h264.h:340
#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:186
uint32_t * mb2br_xy
Definition: h264.h:527
#define MB_TYPE_DIRECT2
Definition: avcodec.h:1248
#define FFMIN(a, b)
Definition: common.h:96
uint16_t * slice_table
slice_table_base + 2*mb_stride + 1
Definition: h264.h:530
uint8_t field_scan8x8_cavlc[64]
Definition: h264.h:552
int poc_cycle_length
num_ref_frames_in_pic_order_cnt_cycle
Definition: h264.h:148
CABACContext cabac
Cabac.
Definition: h264.h:456
int colour_description_present_flag
Definition: h264.h:167
unsigned int first_mb_addr
Definition: h264.h:372
int reference
Definition: h264.h:294
AVRational sar
Definition: h264.h:164
int redundant_pic_count
Definition: h264.h:382
int nb_slice_ctx
Definition: h264.h:482
H264PredWeightTable pwt
Definition: h264.h:335
int long_ref_count
number of actual long term references
Definition: h264.h:612
uint32_t * mb_type
Definition: h264.h:273
int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src)
Definition: h264_picture.c:67
int top_mb_xy
Definition: h264.h:347
int next_mb_skipped
Definition: h264.h:338
#define MAX_SPS_COUNT
Definition: h264.h:53
Definition: h264.h:124
uint8_t chroma_qp_table[2][QP_MAX_NUM+1]
pre-scaled (with chroma_qp_index_offset) version of qp_table
Definition: h264.h:218
void ff_h264_free_tables(H264Context *h)
Definition: h264.c:137
int init_qp
pic_init_qp_minus26 + 26
Definition: h264.h:209
int mmco_reset
Definition: h264.h:609
H264SliceContext * slice_ctx
Definition: h264.h:481
int direct_8x8_inference_flag
Definition: h264.h:155
int n
Definition: avisynth_c.h:547
int reference
Definition: h264.h:308
int max_pic_num
max_frame_num or 2 * max_frame_num for field pics.
Definition: h264.h:594
int top_borders_allocated[2]
Definition: h264.h:426
uint8_t scaling_matrix8[6][64]
Definition: h264.h:180
int curr_pic_num
frame_num for frames or 2 * frame_num + 1 for field pics.
Definition: h264.h:589
#define src
Definition: vp9dsp.c:530
void ff_h264_init_cabac_states(const H264Context *h, H264SliceContext *sl)
Definition: h264_cabac.c:1263
unsigned int sps_id
Definition: h264.h:137
uint8_t * edge_emu_buffer
Definition: h264.h:422
int ff_h264_get_slice_type(const H264SliceContext *sl)
Reconstruct bitstream slice_type.
Definition: h264_slice.c:1809
int top_type
Definition: h264.h:352
int pic_order_present
pic_order_present_flag
Definition: h264.h:203
uint8_t zigzag_scan_q0[16]
Definition: h264.h:553
int bit_depth_luma
luma bit depth from sps to detect changes
Definition: h264.h:577
int topleft_type
Definition: h264.h:351
short offset_for_ref_frame[256]
Definition: h264.h:175
int chroma_format_idc
chroma format from sps to detect changes
Definition: h264.h:578
Definition: h264.h:121
VideoDSPContext vdsp
Definition: h264.h:471
int intra16x16_pred_mode
Definition: h264.h:341
int timing_info_present_flag
Definition: h264.h:171
int mb_stride
Definition: h264.h:562
int postpone_filter
Definition: h264.h:510
int vcl_hrd_parameters_present_flag
Definition: h264.h:182
AVCodecContext * avctx
Definition: h264.h:470
uint8_t zigzag_scan8x8_q0[64]
Definition: h264.h:554
#define MB_TYPE_8x16
Definition: avcodec.h:1245
int last_qscale_diff
Definition: h264.h:328
AVBufferRef * pps_list[MAX_PPS_COUNT]
Definition: h264.h:231
void ff_h264_remove_all_refs(H264Context *h)
Definition: h264_refs.c:562
H264Picture * short_ref[32]
Definition: h264.h:597
int next_outputed_poc
Definition: h264.h:602
int explicit_ref_marking
Definition: h264.h:610
int field_poc[2]
top/bottom POC
Definition: h264.h:281
int recovery_frame
recovery_frame is the frame_num at which the next frame should be fully constructed.
Definition: h264.h:659
int max_contexts
Max number of threads / contexts.
Definition: h264.h:630
main external API structure.
Definition: avcodec.h:1657
Definition: h264.h:119
int qp_thresh
QP threshold to skip loopfilter.
Definition: h264.h:327
int dpb_output_delay_length
dpb_output_delay_length_minus1 + 1
Definition: h264.h:188
int explicit_ref_marking
Definition: h264.h:462
Definition: h264.h:244
int vui_parameters_present_flag
Definition: h264.h:163
#define QP_MAX_NUM
Definition: h264.h:112
void * buf
Definition: avisynth_c.h:553
int resync_mb_y
Definition: h264.h:371
int8_t * qscale_table
Definition: h264.h:267
int constraint_set_flags
constraint_set[0-3]_flag
Definition: h264.h:192
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:903
int ff_h264_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: h264_slice.c:297
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:432
rational number numerator/denominator
Definition: rational.h:43
Definition: h264.h:117
int8_t * ref_index[2]
Definition: h264.h:279
#define MAX_MMCO_COUNT
Definition: h264.h:56
int pixel_shift
0 for 8-bit H.264, 1 for high-bit-depth H.264
Definition: h264.h:486
int mmco_reset
MMCO_RESET set this 1.
Definition: h264.h:284
H264Picture * cur_pic_ptr
Definition: h264.h:477
ptrdiff_t mb_uvlinesize
Definition: h264.h:366
refcounted data buffer API
int mb_mbaff
mb_aff_frame && mb_field_decoding_flag
Definition: h264.h:380
uint8_t direct_cache[5 *8]
Definition: h264.h:440
int enable_er
Definition: h264.h:688
const SPS * sps
Definition: h264.h:237
struct H264SliceContext::@53 ref_modifications[2][32]
unsigned int sps_id
Definition: h264.h:201
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
Definition: h264.h:144
ptrdiff_t mb_linesize
may be equal to s->linesize or s->linesize * 2, for mbaff
Definition: h264.h:365
int16_t slice_row[MAX_SLICES]
to detect when MAX_SLICES is too low
Definition: h264.h:686
int col_fieldoff
Definition: h264.h:391
ptrdiff_t linesize
Definition: h264.h:364
int block_offset[2 *(16 *3)]
block_offset[ 0..23] for frame macroblocks block_offset[24..47] for field macroblocks ...
Definition: h264.h:524
uint32_t time_scale
Definition: h264.h:173
int ff_h264_build_ref_list(H264Context *h, H264SliceContext *sl)
Definition: h264_refs.c:298
int linesize[3]
Definition: h264.h:306
int transform_8x8_mode
transform_8x8_mode_flag
Definition: h264.h:215
ptrdiff_t uvlinesize
Definition: h264.h:364
H.264 / AVC / MPEG-4 prediction functions.
int pic_struct_present_flag
Definition: h264.h:183
uint8_t zigzag_scan[16]
Definition: h264.h:547
unsigned int list_count
Definition: h264.h:406
Definition: vp9.h:84
#define AV_ZERO128(d)
Definition: intreadwrite.h:622
int has_recovery_point
Definition: h264.h:674
int ff_h264_execute_ref_pic_marking(H264Context *h)
Execute the reference picture marking (memory management control operations).
Definition: h264_refs.c:608
int ff_h264_decode_picture_parameter_set(GetBitContext *gb, AVCodecContext *avctx, H264ParamSets *ps, int bit_length)
Decode PPS.
Definition: h264_ps.c:712
int left_type[LEFT_MBS]
Definition: h264.h:354
int mbaff
1 -> MBAFF frame 0-> not MBAFF
Definition: h264.h:291
A reference to a data buffer.
Definition: buffer.h:81
void ff_h264_flush_change(H264Context *h)
Definition: h264.c:755
AVBufferPool * qscale_table_pool
Definition: h264.h:692
H264Picture * next_output_pic
Definition: h264.h:601
AVBufferPool * motion_val_pool
Definition: h264.h:694
int mb_height
pic_height_in_map_units_minus1 + 1
Definition: h264.h:152
int topright_type
Definition: h264.h:353
int init_qs
pic_init_qs_minus26 + 26
Definition: h264.h:210
int pic_id
pic_num (short -> no wrap version of pic_num, pic_num & max_pic_num; long -> long_pic_num) ...
Definition: h264.h:286
common internal api header.
#define AV_COPY128(d, s)
Definition: intreadwrite.h:594
AVBufferRef * pps_ref
Definition: h264.h:233
int nal_hrd_parameters_present_flag
Definition: h264.h:181
uint16_t * slice_table_base
Definition: h264.h:582
size_t data_size
Definition: h264.h:221
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
Definition: h264.h:142
int missing_fields
Definition: h264.h:676
#define MB_TYPE_8x8
Definition: avcodec.h:1246
H264ParamSets ps
Definition: h264.h:580
Bi-dir predicted.
Definition: avutil.h:268
uint8_t op
Definition: h264.h:411
int cur_chroma_format_idc
Definition: h264.h:684
int8_t * intra4x4_pred_mode
Definition: h264.h:344
int long_arg
index, pic_num, or num long refs depending on opcode
Definition: h264.h:259
#define MB_TYPE_16x8
Definition: avcodec.h:1244
Core video DSP helper functions.
int bit_depth_luma
bit_depth_luma_minus8 + 8
Definition: h264.h:189
int ff_h264_decode_seq_parameter_set(GetBitContext *gb, AVCodecContext *avctx, H264ParamSets *ps, int ignore_truncation)
Decode SPS.
Definition: h264_ps.c:322
int ff_h264_field_end(H264Context *h, H264SliceContext *sl, int in_setup)
Definition: h264_picture.c:153
void ff_h264_set_erpic(ERPicture *dst, H264Picture *src)
Definition: h264_picture.c:130
uint8_t zigzag_scan8x8_cavlc_q0[64]
Definition: h264.h:555
int8_t ref_cache[2][5 *8]
Definition: h264.h:438
Decoded Picture Buffer (DPB).
Definition: vaapi_h264.c:81
unsigned int pps_id
Definition: h264.h:416
#define IS_8X8(a)
Definition: mpegutils.h:91
H264Picture cur_pic
Definition: h264.h:478
int mb_width
Definition: h264.h:561
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:622
int mb_width
pic_width_in_mbs_minus1 + 1
Definition: h264.h:151
int slice_group_count
num_slice_groups_minus1 + 1
Definition: h264.h:204
uint32_t * mb2b_xy
Definition: h264.h:526
H264Ref ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264.h:407
uint8_t field_scan8x8_cavlc_q0[64]
Definition: h264.h:558
int cpb_cnt
See H.264 E.1.2.
Definition: h264.h:185
int cur_bit_depth_luma
Definition: h264.h:685
uint32_t dequant4_buffer[6][QP_MAX_NUM+1][16]
Definition: h264.h:223
AVBufferRef * ref_index_buf[2]
Definition: h264.h:278
H264Picture last_pic_for_ec
Definition: h264.h:479
const uint8_t * intra_pcm_ptr
Definition: h264.h:418
H264DSPContext h264dsp
Definition: h264.h:472
int crop_top
Definition: h264.h:301
unsigned int left_samples_available
Definition: h264.h:362
int ref_count[2][2]
number of entries in ref_poc (FIXME need per slice)
Definition: h264.h:290
uint8_t(*[2] mvd_table)[2]
Definition: h264.h:451
uint8_t field_scan8x8[64]
Definition: h264.h:551
int slice_type_fixed
Definition: h264.h:323
Definition: h264.h:118
void ff_h264_ps_uninit(H264ParamSets *ps)
Uninit H264 param sets structure.
Definition: h264_ps.c:305
#define av_always_inline
Definition: attributes.h:39
int slice_beta_offset
Definition: h264.h:333
int8_t * intra4x4_pred_mode
Definition: h264.h:512
int dist_scale_factor_field[2][32]
Definition: h264.h:398
uint32_t dequant8_buffer[6][QP_MAX_NUM+1][64]
Definition: h264.h:224
static av_always_inline int get_chroma_qp(const PPS *pps, int t, int qscale)
Get the chroma qp.
Definition: h264.h:843
int cpb_removal_delay_length
cpb_removal_delay_length_minus1 + 1
Definition: h264.h:187
static struct @230 state
#define AV_RN64A(p)
Definition: intreadwrite.h:530
uint8_t field_scan_q0[16]
Definition: h264.h:556
#define LIST_NOT_USED
Definition: h264.h:517
int mb_field_decoding_flag
Definition: h264.h:379
uint8_t(* non_zero_count)[48]
Definition: h264.h:515
H.264 decoder/parser shared code.
unsigned int crop_bottom
frame_cropping_rect_bottom_offset
Definition: h264.h:162
uint8_t * bipred_scratchpad
Definition: h264.h:421
float min
Definition: h264.h:122
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
int droppable
Definition: h264.h:500
int level_idc
Definition: h264.h:139
int nal_ref_idc
Definition: h264.h:568
GetBitContext gb
Definition: h264.h:317
uint8_t field_scan[16]
Definition: h264.h:550
uint32_t val
Definition: h264.h:412
int cabac_init_idc
Definition: h264.h:458
int b_stride
Definition: h264.h:528
Context Adaptive Binary Arithmetic Coder.
int left_cbp
Definition: h264.h:395
int ff_h264_decode_ref_pic_marking(const H264Context *h, H264SliceContext *sl, GetBitContext *gb)
Definition: h264_refs.c:823
int short_ref_count
number of actual short term references
Definition: h264.h:613
int mb_slice_group_map_type
Definition: h264.h:205
enum AVColorSpace colorspace
Definition: h264.h:170