FFmpeg  2.1.1
h264.h
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1 /*
2  * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * H.264 / AVC / MPEG4 part10 codec.
25  * @author Michael Niedermayer <michaelni@gmx.at>
26  */
27 
28 #ifndef AVCODEC_H264_H
29 #define AVCODEC_H264_H
30 
31 #include "libavutil/intreadwrite.h"
32 #include "cabac.h"
33 #include "error_resilience.h"
34 #include "get_bits.h"
35 #include "mpegvideo.h"
36 #include "h264chroma.h"
37 #include "h264dsp.h"
38 #include "h264pred.h"
39 #include "h264qpel.h"
40 #include "rectangle.h"
41 
42 #define MAX_SPS_COUNT 32
43 #define MAX_PPS_COUNT 256
44 
45 #define MAX_MMCO_COUNT 66
46 
47 #define MAX_DELAYED_PIC_COUNT 16
48 
49 #define MAX_MBPAIR_SIZE (256*1024) // a tighter bound could be calculated if someone cares about a few bytes
50 
51 /* Compiling in interlaced support reduces the speed
52  * of progressive decoding by about 2%. */
53 #define ALLOW_INTERLACE
54 
55 #define FMO 0
56 
57 /**
58  * The maximum number of slices supported by the decoder.
59  * must be a power of 2
60  */
61 #define MAX_SLICES 16
62 
63 #ifdef ALLOW_INTERLACE
64 #define MB_MBAFF(h) h->mb_mbaff
65 #define MB_FIELD(h) h->mb_field_decoding_flag
66 #define FRAME_MBAFF(h) h->mb_aff_frame
67 #define FIELD_PICTURE(h) (h->picture_structure != PICT_FRAME)
68 #define LEFT_MBS 2
69 #define LTOP 0
70 #define LBOT 1
71 #define LEFT(i) (i)
72 #else
73 #define MB_MBAFF(h) 0
74 #define MB_FIELD(h) 0
75 #define FRAME_MBAFF(h) 0
76 #define FIELD_PICTURE(h) 0
77 #undef IS_INTERLACED
78 #define IS_INTERLACED(mb_type) 0
79 #define LEFT_MBS 1
80 #define LTOP 0
81 #define LBOT 0
82 #define LEFT(i) 0
83 #endif
84 #define FIELD_OR_MBAFF_PICTURE(h) (FRAME_MBAFF(h) || FIELD_PICTURE(h))
85 
86 #ifndef CABAC
87 #define CABAC(h) h->pps.cabac
88 #endif
89 
90 #define CHROMA(h) (h->sps.chroma_format_idc)
91 #define CHROMA422(h) (h->sps.chroma_format_idc == 2)
92 #define CHROMA444(h) (h->sps.chroma_format_idc == 3)
93 
94 #define EXTENDED_SAR 255
95 
96 #define MB_TYPE_REF0 MB_TYPE_ACPRED // dirty but it fits in 16 bit
97 #define MB_TYPE_8x8DCT 0x01000000
98 #define IS_REF0(a) ((a) & MB_TYPE_REF0)
99 #define IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT)
100 
101 #define QP_MAX_NUM (51 + 6*6) // The maximum supported qp
102 
103 /* NAL unit types */
104 enum {
119  NAL_FF_IGNORE = 0xff0f001,
120 };
121 
122 /**
123  * SEI message types
124  */
125 typedef enum {
126  SEI_BUFFERING_PERIOD = 0, ///< buffering period (H.264, D.1.1)
127  SEI_TYPE_PIC_TIMING = 1, ///< picture timing
128  SEI_TYPE_USER_DATA_ITU_T_T35 = 4, ///< user data registered by ITU-T Recommendation T.35
129  SEI_TYPE_USER_DATA_UNREGISTERED = 5, ///< unregistered user data
130  SEI_TYPE_RECOVERY_POINT = 6, ///< recovery point (frame # to decoder sync)
131  SEI_TYPE_FRAME_PACKING = 45, ///< frame packing arrangement
132 } SEI_Type;
133 
134 /**
135  * pic_struct in picture timing SEI message
136  */
137 typedef enum {
138  SEI_PIC_STRUCT_FRAME = 0, ///< 0: %frame
139  SEI_PIC_STRUCT_TOP_FIELD = 1, ///< 1: top field
140  SEI_PIC_STRUCT_BOTTOM_FIELD = 2, ///< 2: bottom field
141  SEI_PIC_STRUCT_TOP_BOTTOM = 3, ///< 3: top field, bottom field, in that order
142  SEI_PIC_STRUCT_BOTTOM_TOP = 4, ///< 4: bottom field, top field, in that order
143  SEI_PIC_STRUCT_TOP_BOTTOM_TOP = 5, ///< 5: top field, bottom field, top field repeated, in that order
144  SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM = 6, ///< 6: bottom field, top field, bottom field repeated, in that order
145  SEI_PIC_STRUCT_FRAME_DOUBLING = 7, ///< 7: %frame doubling
146  SEI_PIC_STRUCT_FRAME_TRIPLING = 8 ///< 8: %frame tripling
148 
149 /**
150  * frame_packing_arrangement types
151  */
152 typedef enum {
160 } SEI_FpaType;
161 
162 /**
163  * Sequence parameter set
164  */
165 typedef struct SPS {
169  int transform_bypass; ///< qpprime_y_zero_transform_bypass_flag
170  int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4
171  int poc_type; ///< pic_order_cnt_type
172  int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4
176  int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle
177  int ref_frame_count; ///< num_ref_frames
179  int mb_width; ///< pic_width_in_mbs_minus1 + 1
180  int mb_height; ///< pic_height_in_map_units_minus1 + 1
182  int mb_aff; ///< mb_adaptive_frame_field_flag
184  int crop; ///< frame_cropping_flag
185 
186  /* those 4 are already in luma samples */
187  unsigned int crop_left; ///< frame_cropping_rect_left_offset
188  unsigned int crop_right; ///< frame_cropping_rect_right_offset
189  unsigned int crop_top; ///< frame_cropping_rect_top_offset
190  unsigned int crop_bottom; ///< frame_cropping_rect_bottom_offset
201  uint32_t time_scale;
203  short offset_for_ref_frame[256]; // FIXME dyn aloc?
213  int cpb_cnt; ///< See H.264 E.1.2
214  int initial_cpb_removal_delay_length; ///< initial_cpb_removal_delay_length_minus1 + 1
215  int cpb_removal_delay_length; ///< cpb_removal_delay_length_minus1 + 1
216  int dpb_output_delay_length; ///< dpb_output_delay_length_minus1 + 1
217  int bit_depth_luma; ///< bit_depth_luma_minus8 + 8
218  int bit_depth_chroma; ///< bit_depth_chroma_minus8 + 8
219  int residual_color_transform_flag; ///< residual_colour_transform_flag
220  int constraint_set_flags; ///< constraint_set[0-3]_flag
221  int new; ///< flag to keep track if the decoder context needs re-init due to changed SPS
222 } SPS;
223 
224 /**
225  * Picture parameter set
226  */
227 typedef struct PPS {
228  unsigned int sps_id;
229  int cabac; ///< entropy_coding_mode_flag
230  int pic_order_present; ///< pic_order_present_flag
231  int slice_group_count; ///< num_slice_groups_minus1 + 1
233  unsigned int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1
234  int weighted_pred; ///< weighted_pred_flag
236  int init_qp; ///< pic_init_qp_minus26 + 26
237  int init_qs; ///< pic_init_qs_minus26 + 26
239  int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag
240  int constrained_intra_pred; ///< constrained_intra_pred_flag
241  int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag
242  int transform_8x8_mode; ///< transform_8x8_mode_flag
245  uint8_t chroma_qp_table[2][QP_MAX_NUM+1]; ///< pre-scaled (with chroma_qp_index_offset) version of qp_table
247 } PPS;
248 
249 /**
250  * Frame Packing Arrangement Type
251  */
252 typedef struct FPA {
254  int frame_packing_arrangement_cancel_flag; ///< is previous arrangement canceled, -1 if never received
259 } FPA;
260 
261 /**
262  * Memory management control operation opcode.
263  */
264 typedef enum MMCOOpcode {
265  MMCO_END = 0,
272 } MMCOOpcode;
273 
274 /**
275  * Memory management control operation.
276  */
277 typedef struct MMCO {
279  int short_pic_num; ///< pic_num without wrapping (pic_num & max_pic_num)
280  int long_arg; ///< index, pic_num, or num long refs depending on opcode
281 } MMCO;
282 
283 /**
284  * H264Context
285  */
286 typedef struct H264Context {
297 
301 
302  int pixel_shift; ///< 0 for 8-bit H264, 1 for high-bit-depth H264
303  int chroma_qp[2]; // QPc
304 
305  int qp_thresh; ///< QP threshold to skip loopfilter
306 
307  /* coded dimensions -- 16 * mb w/h */
308  int width, height;
309  ptrdiff_t linesize, uvlinesize;
311 
312  int qscale;
317 
319  int flags;
321 
324 
325  // prediction stuff
328 
333 
335  int top_type;
338 
341 
346  unsigned int top_samples_available;
349  uint8_t (*top_borders[2])[(16 * 3) * 2];
350 
351  /**
352  * non zero coeff count cache.
353  * is 64 if not available.
354  */
356 
358 
359  /**
360  * Motion vector cache.
361  */
362  DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2];
363  DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8];
364 #define LIST_NOT_USED -1 // FIXME rename?
365 #define PART_NOT_AVAILABLE -2
366 
367  /**
368  * number of neighbors (top and/or left) that used 8x8 dct
369  */
371 
372  /**
373  * block_offset[ 0..23] for frame macroblocks
374  * block_offset[24..47] for field macroblocks
375  */
376  int block_offset[2 * (16 * 3)];
377 
378  uint32_t *mb2b_xy; // FIXME are these 4 a good idea?
379  uint32_t *mb2br_xy;
380  int b_stride; // FIXME use s->b4_stride
381 
382  ptrdiff_t mb_linesize; ///< may be equal to s->linesize or s->linesize * 2, for mbaff
383  ptrdiff_t mb_uvlinesize;
384 
385  unsigned current_sps_id; ///< id of the current SPS
386  SPS sps; ///< current sps
387 
388  /**
389  * current pps
390  */
391  PPS pps; // FIXME move to Picture perhaps? (->no) do we need that?
392 
393  uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; // FIXME should these be moved down?
394  uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64];
395  uint32_t(*dequant4_coeff[6])[16];
396  uint32_t(*dequant8_coeff[6])[64];
397 
399  uint16_t *slice_table; ///< slice_table_base + 2*mb_stride + 1
401  int slice_type_nos; ///< S free slice type (SI/SP are remapped to I/P)
403 
404  // interlacing specific flags
407  int mb_mbaff; ///< mb_aff_frame && mb_field_decoding_flag
410 
411  DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4];
412 
413  // Weighted pred stuff
418  // The following 2 can be changed to int8_t but that causes 10cpu cycles speedloss
419  int luma_weight[48][2][2];
420  int chroma_weight[48][2][2][2];
421  int implicit_weight[48][48][2];
422 
428  int map_col_to_list0[2][16 + 32];
429  int map_col_to_list0_field[2][2][16 + 32];
430 
431  /**
432  * num_ref_idx_l0/1_active_minus1 + 1
433  */
434  unsigned int ref_count[2]; ///< counts frames or fields, depending on current mb mode
435  unsigned int list_count;
436  uint8_t *list_counts; ///< Array of list_count per MB specifying the slice type
437  Picture ref_list[2][48]; /**< 0..15: frame refs, 16..47: mbaff field refs.
438  * Reordered version of default_ref_list
439  * according to picture reordering in slice header */
440  int ref2frm[MAX_SLICES][2][64]; ///< reference to frame number lists, used in the loop filter, the first 2 are for -2,-1
441 
442  // data partitioning
447 
449  DECLARE_ALIGNED(16, int16_t, mb)[16 * 48 * 2]; ///< as a dct coeffecient is int32_t in high depth, we need to reserve twice the space.
450  DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2];
451  int16_t mb_padding[256 * 2]; ///< as mb is addressed by scantable[i] and scantable is uint8_t we can either check that i is not too large or ensure that there is some unused stuff after mb
452 
453  /**
454  * Cabac
455  */
458 
459  /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0, 1, 2), 0x0? luma_cbp */
460  uint16_t *cbp_table;
461  int cbp;
462  int top_cbp;
463  int left_cbp;
464  /* chroma_pred_mode for i4x4 or i16x16, else 0 */
467  uint8_t (*mvd_table[2])[2];
468  DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5 * 8][2];
471 
484 
486 
487  int mb_x, mb_y;
493  int mb_num;
494  int mb_xy;
495 
497 
498  // deblock
499  int deblocking_filter; ///< disable_deblocking_filter_idc with 1 <-> 0
502 
503  // =============================================================
504  // Things below are not used in the MB or more inner code
505 
509  unsigned int rbsp_buffer_size[2];
510 
511  /**
512  * Used to parse AVC variant of h264
513  */
514  int is_avc; ///< this flag is != 0 if codec is avc1
515  int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
516  int got_first; ///< this flag is != 0 if we've parsed a frame
517 
518  int bit_depth_luma; ///< luma bit depth from sps to detect changes
519  int chroma_format_idc; ///< chroma format from sps to detect changes
520 
523 
524  int dequant_coeff_pps; ///< reinit tables when pps changes
525 
526  uint16_t *slice_table_base;
527 
528  // POC stuff
529  int poc_lsb;
530  int poc_msb;
532  int delta_poc[2];
534  int prev_poc_msb; ///< poc_msb of the last reference pic for POC type 0
535  int prev_poc_lsb; ///< poc_lsb of the last reference pic for POC type 0
536  int frame_num_offset; ///< for POC type 2
537  int prev_frame_num_offset; ///< for POC type 2
538  int prev_frame_num; ///< frame_num of the last pic for POC type 1/2
539 
540  /**
541  * frame_num for frames or 2 * frame_num + 1 for field pics.
542  */
544 
545  /**
546  * max_frame_num or 2 * max_frame_num for field pics.
547  */
549 
551 
552  Picture default_ref_list[2][32]; ///< base reference list for all slices of a coded picture
560 
561  /**
562  * memory management control operations buffer.
563  */
567 
568  int long_ref_count; ///< number of actual long term references
569  int short_ref_count; ///< number of actual short term references
570 
572 
573  /**
574  * @name Members for slice based multithreading
575  * @{
576  */
578 
579  /**
580  * current slice number, used to initialize slice_num of each thread/context
581  */
583 
584  /**
585  * Max number of threads / contexts.
586  * This is equal to AVCodecContext.thread_count unless
587  * multithreaded decoding is impossible, in which case it is
588  * reduced to 1.
589  */
591 
593 
594  /**
595  * 1 if the single thread fallback warning has already been
596  * displayed, 0 otherwise.
597  */
599 
601 
603  unsigned int last_ref_count[2];
604  /** @} */
605 
606  /**
607  * pic_struct in picture timing SEI message
608  */
610 
611  /**
612  * Complement sei_pic_struct
613  * SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced frames.
614  * However, soft telecined frames may have these values.
615  * This is used in an attempt to flag soft telecine progressive.
616  */
618 
619  /**
620  * Bit set of clock types for fields/frames in picture timing SEI message.
621  * For each found ct_type, appropriate bit is set (e.g., bit 1 for
622  * interlaced).
623  */
625 
626  /**
627  * dpb_output_delay in picture timing SEI message, see H.264 C.2.2
628  */
630 
631  /**
632  * cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
633  */
635 
636  /**
637  * recovery_frame_cnt from SEI message
638  *
639  * Set to -1 if no recovery point SEI message found or to number of frames
640  * before playback synchronizes. Frames having recovery point are key
641  * frames.
642  */
644  /**
645  * recovery_frame is the frame_num at which the next frame should
646  * be fully constructed.
647  *
648  * Set to -1 when not expecting a recovery point.
649  */
651 
652  /**
653  * Are the SEI recovery points looking valid.
654  */
656 
658 
659  int luma_weight_flag[2]; ///< 7.4.3.2 luma_weight_lX_flag
660  int chroma_weight_flag[2]; ///< 7.4.3.2 chroma_weight_lX_flag
661 
662  // Timestamp stuff
663  int sei_buffering_period_present; ///< Buffering period SEI flag
664  int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs
665 
668 
669  int16_t slice_row[MAX_SLICES]; ///< to detect when MAX_SLICES is too low
670 
671  int sync; ///< did we had a keyframe or recovery point
672 
677  int16_t *dc_val_base;
678 
679  uint8_t *visualization_buffer[3]; ///< temporary buffer vor MV visualization
680 
685 } H264Context;
686 
687 extern const uint8_t ff_h264_chroma_qp[7][QP_MAX_NUM + 1]; ///< One chroma qp table for each possible bit depth (8-14).
688 extern const uint16_t ff_h264_mb_sizes[4];
689 
690 /**
691  * Decode SEI
692  */
694 
695 /**
696  * Decode SPS
697  */
699 
700 /**
701  * compute profile from sps
702  */
704 
705 /**
706  * Decode PPS
707  */
708 int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length);
709 
710 /**
711  * Decode a network abstraction layer unit.
712  * @param consumed is the number of bytes used as input
713  * @param length is the length of the array
714  * @param dst_length is the number of decoded bytes FIXME here
715  * or a decode rbsp tailing?
716  * @return decoded bytes, might be src+1 if no escapes
717  */
719  int *dst_length, int *consumed, int length);
720 
721 /**
722  * Free any data that may have been allocated in the H264 context
723  * like SPS, PPS etc.
724  */
726 
727 /**
728  * Reconstruct bitstream slice_type.
729  */
730 int ff_h264_get_slice_type(const H264Context *h);
731 
732 /**
733  * Allocate tables.
734  * needs width/height
735  */
737 
738 /**
739  * Fill the default_ref_list.
740  */
742 
746 
747 /**
748  * Execute the reference picture marking (memory management control operations).
749  */
750 int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count);
751 
753  int first_slice);
754 
755 int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice);
756 
757 /**
758  * Check if the top & left blocks are available if needed & change the
759  * dc mode so it only uses the available blocks.
760  */
762 
763 /**
764  * Check if the top & left blocks are available if needed & change the
765  * dc mode so it only uses the available blocks.
766  */
767 int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma);
768 
772 void ff_h264_decode_init_vlc(void);
773 
774 /**
775  * Decode a macroblock
776  * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
777  */
779 
780 /**
781  * Decode a CABAC coded macroblock
782  * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
783  */
785 
787 
790 void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type);
791 
792 void ff_h264_filter_mb_fast(H264Context *h, int mb_x, int mb_y,
793  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
794  unsigned int linesize, unsigned int uvlinesize);
795 void ff_h264_filter_mb(H264Context *h, int mb_x, int mb_y,
796  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
797  unsigned int linesize, unsigned int uvlinesize);
798 
799 /**
800  * Reset SEI values at the beginning of the frame.
801  *
802  * @param h H.264 context.
803  */
805 
806 /**
807  * Get stereo_mode string from the h264 frame_packing_arrangement
808  * @param h H.264 context.
809  */
810 const char* ff_h264_sei_stereo_mode(H264Context *h);
811 
812 /*
813  * o-o o-o
814  * / / /
815  * o-o o-o
816  * ,---'
817  * o-o o-o
818  * / / /
819  * o-o o-o
820  */
821 
822 /* Scan8 organization:
823  * 0 1 2 3 4 5 6 7
824  * 0 DY y y y y y
825  * 1 y Y Y Y Y
826  * 2 y Y Y Y Y
827  * 3 y Y Y Y Y
828  * 4 y Y Y Y Y
829  * 5 DU u u u u u
830  * 6 u U U U U
831  * 7 u U U U U
832  * 8 u U U U U
833  * 9 u U U U U
834  * 10 DV v v v v v
835  * 11 v V V V V
836  * 12 v V V V V
837  * 13 v V V V V
838  * 14 v V V V V
839  * DY/DU/DV are for luma/chroma DC.
840  */
841 
842 #define LUMA_DC_BLOCK_INDEX 48
843 #define CHROMA_DC_BLOCK_INDEX 49
844 
845 // This table must be here because scan8[constant] must be known at compiletime
846 static const uint8_t scan8[16 * 3 + 3] = {
847  4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8,
848  6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8,
849  4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8,
850  6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8,
851  4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8,
852  6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8,
853  4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8,
854  6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8,
855  4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8,
856  6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8,
857  4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8,
858  6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8,
859  0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8
860 };
861 
862 static av_always_inline uint32_t pack16to32(int a, int b)
863 {
864 #if HAVE_BIGENDIAN
865  return (b & 0xFFFF) + (a << 16);
866 #else
867  return (a & 0xFFFF) + (b << 16);
868 #endif
869 }
870 
871 static av_always_inline uint16_t pack8to16(int a, int b)
872 {
873 #if HAVE_BIGENDIAN
874  return (b & 0xFF) + (a << 8);
875 #else
876  return (a & 0xFF) + (b << 8);
877 #endif
878 }
879 
880 /**
881  * Get the chroma qp.
882  */
884 {
885  return h->pps.chroma_qp_table[t][qscale];
886 }
887 
888 /**
889  * Get the predicted intra4x4 prediction mode.
890  */
892 {
893  const int index8 = scan8[n];
894  const int left = h->intra4x4_pred_mode_cache[index8 - 1];
895  const int top = h->intra4x4_pred_mode_cache[index8 - 8];
896  const int min = FFMIN(left, top);
897 
898  tprintf(h->avctx, "mode:%d %d min:%d\n", left, top, min);
899 
900  if (min < 0)
901  return DC_PRED;
902  else
903  return min;
904 }
905 
907 {
908  int8_t *i4x4 = h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
909  int8_t *i4x4_cache = h->intra4x4_pred_mode_cache;
910 
911  AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
912  i4x4[4] = i4x4_cache[7 + 8 * 3];
913  i4x4[5] = i4x4_cache[7 + 8 * 2];
914  i4x4[6] = i4x4_cache[7 + 8 * 1];
915 }
916 
918 {
919  const int mb_xy = h->mb_xy;
920  uint8_t *nnz = h->non_zero_count[mb_xy];
921  uint8_t *nnz_cache = h->non_zero_count_cache;
922 
923  AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]);
924  AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]);
925  AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]);
926  AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]);
927  AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]);
928  AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]);
929  AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]);
930  AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]);
931 
932  if (!h->chroma_y_shift) {
933  AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]);
934  AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]);
935  AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]);
936  AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]);
937  }
938 }
939 
941  int b_stride,
942  int b_xy, int b8_xy,
943  int mb_type, int list)
944 {
945  int16_t(*mv_dst)[2] = &h->cur_pic.motion_val[list][b_xy];
946  int16_t(*mv_src)[2] = &h->mv_cache[list][scan8[0]];
947  AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0);
948  AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1);
949  AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2);
950  AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3);
951  if (CABAC(h)) {
952  uint8_t (*mvd_dst)[2] = &h->mvd_table[list][FMO ? 8 * h->mb_xy
953  : h->mb2br_xy[h->mb_xy]];
954  uint8_t(*mvd_src)[2] = &h->mvd_cache[list][scan8[0]];
955  if (IS_SKIP(mb_type)) {
956  AV_ZERO128(mvd_dst);
957  } else {
958  AV_COPY64(mvd_dst, mvd_src + 8 * 3);
959  AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0);
960  AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1);
961  AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2);
962  }
963  }
964 
965  {
966  int8_t *ref_index = &h->cur_pic.ref_index[list][b8_xy];
967  int8_t *ref_cache = h->ref_cache[list];
968  ref_index[0 + 0 * 2] = ref_cache[scan8[0]];
969  ref_index[1 + 0 * 2] = ref_cache[scan8[4]];
970  ref_index[0 + 1 * 2] = ref_cache[scan8[8]];
971  ref_index[1 + 1 * 2] = ref_cache[scan8[12]];
972  }
973 }
974 
975 static av_always_inline void write_back_motion(H264Context *h, int mb_type)
976 {
977  const int b_stride = h->b_stride;
978  const int b_xy = 4 * h->mb_x + 4 * h->mb_y * h->b_stride; // try mb2b(8)_xy
979  const int b8_xy = 4 * h->mb_xy;
980 
981  if (USES_LIST(mb_type, 0)) {
982  write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 0);
983  } else {
984  fill_rectangle(&h->cur_pic.ref_index[0][b8_xy],
985  2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
986  }
987  if (USES_LIST(mb_type, 1))
988  write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 1);
989 
990  if (h->slice_type_nos == AV_PICTURE_TYPE_B && CABAC(h)) {
991  if (IS_8X8(mb_type)) {
992  uint8_t *direct_table = &h->direct_table[4 * h->mb_xy];
993  direct_table[1] = h->sub_mb_type[1] >> 1;
994  direct_table[2] = h->sub_mb_type[2] >> 1;
995  direct_table[3] = h->sub_mb_type[3] >> 1;
996  }
997  }
998 }
999 
1001 {
1003  return !(AV_RN64A(h->sub_mb_type) &
1005  0x0001000100010001ULL));
1006  else
1007  return !(AV_RN64A(h->sub_mb_type) &
1009  0x0001000100010001ULL));
1010 }
1011 
1012 void ff_h264_draw_horiz_band(H264Context *h, int y, int height);
1013 int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc);
1016 
1017 #endif /* AVCODEC_H264_H */
int chroma_format_idc
Definition: h264.h:168
Picture default_ref_list[2][32]
base reference list for all slices of a coded picture
Definition: h264.h:552
static av_always_inline uint16_t pack8to16(int a, int b)
Definition: h264.h:871
void ff_h264_direct_dist_scale_factor(H264Context *const h)
Definition: h264_direct.c:50
GetBitContext inter_gb
Definition: h264.h:444
int video_signal_type_present_flag
Definition: h264.h:193
static av_always_inline int get_dct8x8_allowed(H264Context *h)
Definition: h264.h:1000
int last_slice_type
Definition: h264.h:602
int ff_h264_decode_mb_cabac(H264Context *h)
Decode a CABAC coded macroblock.
Definition: h264_cabac.c:1880
Memory management control operation.
Definition: h264.h:277
int ff_h264_decode_seq_parameter_set(H264Context *h)
Decode SPS.
Definition: h264_ps.c:322
uint8_t * edge_emu_buffer
Definition: h264.h:676
int8_t * ref_index[2]
Definition: mpegvideo.h:114
int workaround_bugs
Definition: h264.h:320
Definition: h264.h:112
unsigned int top_samples_available
Definition: h264.h:346
unsigned int topleft_samples_available
Definition: h264.h:345
int single_decode_warning
1 if the single thread fallback warning has already been displayed, 0 otherwise.
Definition: h264.h:598
GetBitContext gb
Definition: h264.h:294
5: top field, bottom field, top field repeated, in that order
Definition: h264.h:143
int sei_cpb_removal_delay
cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
Definition: h264.h:634
int low_delay
Definition: h264.h:316
int mb_num
Definition: h264.h:493
int size
GetBitContext * intra_gb_ptr
Definition: h264.h:445
#define IS_SKIP(a)
Definition: mpegvideo.h:140
int mb_aff_frame
Definition: h264.h:405
Definition: h264.h:113
int topleft_type
Definition: h264.h:334
int delta_poc[2]
Definition: h264.h:532
ptrdiff_t uvlinesize
Definition: h264.h:309
#define av_always_inline
Definition: attributes.h:41
int last_qscale_diff
Definition: h264.h:466
#define LEFT_MBS
Definition: h264.h:68
int cbp
Definition: h264.h:461
3: top field, bottom field, in that order
Definition: h264.h:141
const uint8_t * ff_h264_decode_nal(H264Context *h, const uint8_t *src, int *dst_length, int *consumed, int length)
Decode a network abstraction layer unit.
Definition: h264.c:606
int first_field
Definition: h264.h:409
uint8_t field_scan8x8_q0[64]
Definition: h264.h:482
unregistered user data
Definition: h264.h:129
int weighted_bipred_idc
Definition: h264.h:235
int sync
did we had a keyframe or recovery point
Definition: h264.h:671
int chroma_qp_index_offset[2]
Definition: h264.h:238
int left_type[LEFT_MBS]
Definition: h264.h:337
H264ChromaContext h264chroma
Definition: h264.h:290
uint8_t cabac_state[1024]
Definition: h264.h:457
uint16_t * cbp_table
Definition: h264.h:460
av_cold int ff_h264_decode_init(AVCodecContext *avctx)
Definition: h264.c:1553
int scaling_matrix_present
Definition: h264.h:206
int luma_weight_flag[2]
7.4.3.2 luma_weight_lX_flag
Definition: h264.h:659
MMCO mmco[MAX_MMCO_COUNT]
memory management control operations buffer.
Definition: h264.h:564
uint8_t scaling_matrix4[6][16]
Definition: h264.h:207
int topleft_partition
Definition: h264.h:340
7: frame doubling
Definition: h264.h:145
#define MAX_PPS_COUNT
Definition: h264.h:43
Sequence parameter set.
Definition: h264.h:165
int initial_cpb_removal_delay[32]
Initial timestamps for CPBs.
Definition: h264.h:664
int mb_y
Definition: h264.h:487
int coded_picture_number
Definition: h264.h:315
int bitstream_restriction_flag
Definition: h264.h:204
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:233
#define FMO
Definition: h264.h:55
const char * b
Definition: vf_curves.c:105
AVBufferPool * mb_type_pool
Definition: h264.h:682
int outputed_poc
Definition: h264.h:558
int chroma_x_shift
Definition: h264.h:310
Picture parameter set.
Definition: h264.h:227
#define DECLARE_ALIGNED(n, t, v)
Definition: avcodec.h:5102
int flags
Definition: h264.h:319
int frame_mbs_only_flag
Definition: h264.h:181
int mb_height
Definition: h264.h:491
int16_t * dc_val_base
Definition: h264.h:677
int is_avc
Used to parse AVC variant of h264.
Definition: h264.h:514
int mmco_index
Definition: h264.h:565
AVBufferPool * ref_index_pool
Definition: h264.h:684
MMCOOpcode
Memory management control operation opcode.
Definition: h264.h:264
uint8_t zigzag_scan8x8_cavlc[64]
Definition: h264.h:474
DSPContext dsp
Definition: h264.h:295
mpegvideo header.
int ff_h264_get_profile(SPS *sps)
Compute profile from profile_idc and constraint_set?_flags.
Definition: h264.c:3016
uint32_t dequant8_buffer[6][QP_MAX_NUM+1][64]
Definition: h264.h:394
#define AV_COPY32(d, s)
Definition: intreadwrite.h:578
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
Definition: h264.h:362
void ff_h264_decode_init_vlc(void)
Definition: h264_cavlc.c:326
H264Context.
Definition: h264.h:286
int prev_poc_msb
poc_msb of the last reference pic for POC type 0
Definition: h264.h:534
int chroma_qp_diff
Definition: h264.h:246
int frame_packing_arrangement_repetition_period
Definition: h264.h:256
static av_always_inline void write_back_motion(H264Context *h, int mb_type)
Definition: h264.h:975
uint32_t num_units_in_tick
Definition: h264.h:200
4: bottom field, top field, in that order
Definition: h264.h:142
int picture_structure
Definition: h264.h:408
int slice_type_nos
S free slice type (SI/SP are remapped to I/P)
Definition: h264.h:401
int profile_idc
Definition: h264.h:166
int frame_packing_arrangement_id
Definition: h264.h:253
unsigned current_sps_id
id of the current SPS
Definition: h264.h:385
MMCOOpcode opcode
Definition: h264.h:278
H.264 DSP functions.
static av_always_inline uint32_t pack16to32(int a, int b)
Definition: h264.h:862
int mb_skip_run
Definition: h264.h:490
void ff_h264_init_cabac_states(H264Context *h)
Definition: h264_cabac.c:1261
static av_always_inline int pred_intra_mode(H264Context *h, int n)
Get the predicted intra4x4 prediction mode.
Definition: h264.h:891
#define USES_LIST(a, list)
does this mb use listX, note does not work if subMBs
Definition: mpegvideo.h:156
uint8_t * chroma_pred_mode_table
Definition: h264.h:465
int ff_h264_decode_ref_pic_list_reordering(H264Context *h)
Definition: h264_refs.c:204
unsigned int crop_top
frame_cropping_rect_top_offset
Definition: h264.h:189
int resync_mb_y
Definition: h264.h:489
int fixed_frame_rate_flag
Definition: h264.h:202
uint8_t scaling_matrix4[6][16]
Definition: h264.h:243
int parse_history_count
Definition: h264.h:674
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:440
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
Definition: h264.h:239
int short_pic_num
pic_num without wrapping (pic_num &amp; max_pic_num)
Definition: h264.h:279
uint32_t(*[6] dequant4_coeff)[16]
Definition: h264.h:395
uint8_t
int prev_frame_num_offset
for POC type 2
Definition: h264.h:537
int use_weight
Definition: h264.h:414
SEI_FpaType frame_packing_arrangement_type
Definition: h264.h:255
int full_range
Definition: h264.h:194
unsigned int crop_left
frame_cropping_rect_left_offset
Definition: h264.h:187
int offset_for_non_ref_pic
Definition: h264.h:174
mode
Definition: f_perms.c:27
void ff_h264_reset_sei(H264Context *h)
Reset SEI values at the beginning of the frame.
Definition: h264_sei.c:39
int gaps_in_frame_num_allowed_flag
Definition: h264.h:178
int data_partitioning
Definition: h264.h:314
int luma_weight[48][2][2]
Definition: h264.h:419
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
Definition: h264.h:218
enum AVColorPrimaries color_primaries
Definition: h264.h:196
Picture ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264.h:437
Motion estimation context.
Definition: mpegvideo.h:189
int cabac
entropy_coding_mode_flag
Definition: h264.h:229
int mb_xy
Definition: h264.h:494
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:434
unsigned int crop_right
frame_cropping_rect_right_offset
Definition: h264.h:188
Definition: h264.h:108
SEI_PicStructType
pic_struct in picture timing SEI message
Definition: h264.h:137
unsigned int last_ref_count[2]
Definition: h264.h:603
Definition: h264.h:107
Context for storing H.264 prediction functions.
Definition: h264pred.h:92
void ff_h264_fill_mbaff_ref_list(H264Context *h)
Definition: h264_refs.c:326
int height
Definition: h264.h:308
int mb_x
Definition: h264.h:487
int transform_bypass
qpprime_y_zero_transform_bypass_flag
Definition: h264.h:169
int left_mb_xy[LEFT_MBS]
Definition: h264.h:332
int top_mb_xy
Definition: h264.h:330
int ff_h264_get_slice_type(const H264Context *h)
Reconstruct bitstream slice_type.
Definition: h264.c:4046
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
Definition: h264.h:241
bitstream reader API header.
int chroma_y_shift
Definition: h264.h:310
#define MAX_DELAYED_PIC_COUNT
Definition: h264.h:47
static void fill_rectangle(SDL_Surface *screen, int x, int y, int w, int h, int color, int update)
Definition: ffplay.c:510
int topright_type
Definition: h264.h:336
SEI_Type
SEI message types.
Definition: h264.h:125
Picture * next_output_pic
Definition: h264.h:557
int luma_log2_weight_denom
Definition: h264.h:416
uint8_t direct_cache[5 *8]
Definition: h264.h:470
int chroma_weight[48][2][2][2]
Definition: h264.h:420
The buffer pool.
int last_pocs[MAX_DELAYED_PIC_COUNT]
Definition: h264.h:556
int width
Definition: h264.h:308
#define MAX_SLICES
The maximum number of slices supported by the decoder.
Definition: h264.h:61
int frame_num
Definition: h264.h:533
int got_first
this flag is != 0 if we&#39;ve parsed a frame
Definition: h264.h:516
const uint8_t ff_h264_chroma_qp[7][QP_MAX_NUM+1]
One chroma qp table for each possible bit depth (8-14).
Definition: h264_ps.c:71
enum AVColorTransferCharacteristic color_trc
Definition: h264.h:197
int mb_aff
mb_adaptive_frame_field_flag
Definition: h264.h:182
H264PredContext hpc
Definition: h264.h:344
int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma)
Check if the top &amp; left blocks are available if needed and change the dc mode so it only uses the ava...
Definition: h264.c:565
int16_t mb_luma_dc[3][16 *2]
Definition: h264.h:450
MotionEstContext me
Definition: h264.h:292
int poc_type
pic_order_cnt_type
Definition: h264.h:171
int context_initialized
Definition: h264.h:318
int top_cbp
Definition: h264.h:462
void ff_h264_hl_decode_mb(H264Context *h)
Definition: h264.c:2585
int constrained_intra_pred
constrained_intra_pred_flag
Definition: h264.h:240
ParseContext parse_context
Definition: h264.h:293
int nal_unit_type
Definition: h264.h:507
int use_weight_chroma
Definition: h264.h:415
Definition: h264.h:111
int num_reorder_frames
Definition: h264.h:205
void ff_h264_direct_ref_list_init(H264Context *const h)
Definition: h264_direct.c:102
static av_always_inline int get_chroma_qp(H264Context *h, int t, int qscale)
Get the chroma qp.
Definition: h264.h:883
const uint8_t * left_block
Definition: h264.h:339
GetBitContext * inter_gb_ptr
Definition: h264.h:446
int time_offset_length
Definition: h264.h:212
Picture * delayed_pic[MAX_DELAYED_PIC_COUNT+2]
Definition: h264.h:555
int mb_field_decoding_flag
Definition: h264.h:406
int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc)
Definition: h264.c:2808
SEI_FpaType
frame_packing_arrangement types
Definition: h264.h:152
int parse_last_mb
Definition: h264.h:675
PPS pps
current pps
Definition: h264.h:391
uint8_t(*[2] mvd_table)[2]
Definition: h264.h:467
int prev_interlaced_frame
Complement sei_pic_struct SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced...
Definition: h264.h:617
int direct_spatial_mv_pred
Definition: h264.h:423
Definition: h264.h:106
0: frame
Definition: h264.h:138
int weighted_pred
weighted_pred_flag
Definition: h264.h:234
H264QpelContext h264qpel
Definition: h264.h:291
ERContext er
Definition: h264.h:296
#define CABAC(h)
Definition: h264.h:87
int ff_h264_decode_mb_cavlc(H264Context *h)
Decode a macroblock.
Definition: h264_cavlc.c:699
int valid_recovery_point
Are the SEI recovery points looking valid.
Definition: h264.h:655
int residual_color_transform_flag
residual_colour_transform_flag
Definition: h264.h:219
uint8_t * list_counts
Array of list_count per MB specifying the slice type.
Definition: h264.h:436
AVColorSpace
Definition: frame.h:33
int delta_pic_order_always_zero_flag
Definition: h264.h:173
int map_col_to_list0[2][16+32]
Definition: h264.h:428
int offset_for_top_to_bottom_field
Definition: h264.h:175
static av_always_inline void write_back_motion_list(H264Context *h, int b_stride, int b_xy, int b8_xy, int mb_type, int list)
Definition: h264.h:940
uint8_t zigzag_scan8x8[64]
Definition: h264.h:473
int col_parity
Definition: h264.h:424
static const uint8_t scan8[16 *3+3]
Definition: h264.h:846
int chroma_pred_mode
Definition: h264.h:326
int crop
frame_cropping_flag
Definition: h264.h:184
int content_interpretation_type
Definition: h264.h:257
uint8_t * direct_table
Definition: h264.h:469
int ff_pred_weight_table(H264Context *h)
Definition: h264.c:2605
uint8_t scaling_matrix8[6][64]
Definition: h264.h:244
int nal_length_size
Number of bytes used for nal length (1, 2 or 4)
Definition: h264.h:515
useful rectangle filling function
#define MAX_THREADS
CABACContext cabac
Cabac.
Definition: h264.h:456
void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type)
Definition: h264_direct.c:622
unsigned int left_samples_available
Definition: h264.h:348
#define IS_8X8(a)
Definition: mpegvideo.h:148
int next_mb_skipped
Definition: h264.h:323
Context for storing H.264 DSP functions.
Definition: h264dsp.h:41
int ref_frame_count
num_ref_frames
Definition: h264.h:177
Picture * long_ref[32]
Definition: h264.h:554
void ff_h264_filter_mb(H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize)
int frame_num_offset
for POC type 2
Definition: h264.h:536
int initial_cpb_removal_delay_length
initial_cpb_removal_delay_length_minus1 + 1
Definition: h264.h:214
FPA sei_fpa
Definition: h264.h:657
int x264_build
Definition: h264.h:485
uint32_t * mb2br_xy
Definition: h264.h:379
#define MB_TYPE_DIRECT2
Definition: avcodec.h:846
ptrdiff_t linesize
Definition: h264.h:309
uint16_t * slice_table
slice_table_base + 2*mb_stride + 1
Definition: h264.h:399
uint8_t field_scan8x8_cavlc[64]
Definition: h264.h:477
float y
int poc_cycle_length
num_ref_frames_in_pic_order_cnt_cycle
Definition: h264.h:176
int colour_description_present_flag
Definition: h264.h:195
AVRational sar
Definition: h264.h:192
int redundant_pic_count
Definition: h264.h:550
int16_t(*[2] motion_val)[2]
Definition: mpegvideo.h:105
int long_ref_count
number of actual long term references
Definition: h264.h:568
Picture.
Definition: mpegvideo.h:97
int cabac_init_idc
Definition: h264.h:571
SPS sps
current sps
Definition: h264.h:386
PPS * pps_buffers[MAX_PPS_COUNT]
Definition: h264.h:522
uint8_t mvd_cache[2][5 *8][2]
Definition: h264.h:468
#define AV_COPY16(d, s)
Definition: intreadwrite.h:574
#define FFMIN(a, b)
Definition: avcodec.h:925
#define MAX_SPS_COUNT
Definition: h264.h:42
uint8_t chroma_qp_table[2][QP_MAX_NUM+1]
pre-scaled (with chroma_qp_index_offset) version of qp_table
Definition: h264.h:245
int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length)
Decode PPS.
Definition: h264_ps.c:586
int dist_scale_factor[32]
Definition: h264.h:426
int init_qp
pic_init_qp_minus26 + 26
Definition: h264.h:236
int mmco_reset
Definition: h264.h:566
int direct_8x8_inference_flag
Definition: h264.h:183
int8_t intra4x4_pred_mode_cache[5 *8]
Definition: h264.h:342
uint8_t * bipred_scratchpad
Definition: h264.h:667
int n
Definition: avisynth_c.h:588
int poc_lsb
Definition: h264.h:529
int max_pic_num
max_frame_num or 2 * max_frame_num for field pics.
Definition: h264.h:548
int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice)
Definition: h264_refs.c:530
int ff_set_ref_count(H264Context *h)
Definition: h264.c:3314
unsigned int topright_samples_available
Definition: h264.h:347
uint8_t scaling_matrix8[6][64]
Definition: h264.h:208
frame packing arrangement
Definition: h264.h:131
int curr_pic_num
frame_num for frames or 2 * frame_num + 1 for field pics.
Definition: h264.h:543
int slice_type
Definition: h264.h:400
int left_cbp
Definition: h264.h:463
int top_type
Definition: h264.h:335
static av_always_inline void write_back_non_zero_count(H264Context *h)
Definition: h264.h:917
uint32_t dequant4_buffer[6][QP_MAX_NUM+1][16]
Definition: h264.h:393
ptrdiff_t mb_uvlinesize
Definition: h264.h:383
unsigned int list_count
Definition: h264.h:435
int topright_mb_xy
Definition: h264.h:331
GetBitContext intra_gb
Definition: h264.h:443
int dequant_coeff_pps
reinit tables when pps changes
Definition: h264.h:524
int pic_order_present
pic_order_present_flag
Definition: h264.h:230
Picture cur_pic
Definition: h264.h:300
SPS * sps_buffers[MAX_SPS_COUNT]
Definition: h264.h:521
uint8_t zigzag_scan_q0[16]
Definition: h264.h:478
struct H264Context * thread_context[MAX_THREADS]
Definition: h264.h:577
int chroma_log2_weight_denom
Definition: h264.h:417
int bit_depth_luma
luma bit depth from sps to detect changes
Definition: h264.h:518
short offset_for_ref_frame[256]
Definition: h264.h:203
int chroma_format_idc
chroma format from sps to detect changes
Definition: h264.h:519
VideoDSPContext vdsp
Definition: h264.h:288
int timing_info_present_flag
Definition: h264.h:199
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:562
int mb_stride
Definition: h264.h:492
int vcl_hrd_parameters_present_flag
Definition: h264.h:210
AVCodecContext * avctx
Definition: h264.h:287
uint8_t zigzag_scan8x8_q0[64]
Definition: h264.h:479
AVS_Value src
Definition: avisynth_c.h:523
#define MB_TYPE_8x16
Definition: avcodec.h:843
user data registered by ITU-T Recommendation T.35
Definition: h264.h:128
int slice_alpha_c0_offset
Definition: h264.h:500
1: top field
Definition: h264.h:139
void ff_h264_remove_all_refs(H264Context *h)
Definition: h264_refs.c:462
int prev_frame_num
frame_num of the last pic for POC type 1/2
Definition: h264.h:538
int topleft_mb_xy
Definition: h264.h:329
int next_outputed_poc
Definition: h264.h:559
int ff_h264_decode_sei(H264Context *h)
Decode SEI.
Definition: h264_sei.c:264
int poc_msb
Definition: h264.h:530
int implicit_weight[48][48][2]
Definition: h264.h:421
int recovery_frame
recovery_frame is the frame_num at which the next frame should be fully constructed.
Definition: h264.h:650
int max_contexts
Max number of threads / contexts.
Definition: h264.h:590
main external API structure.
Definition: avcodec.h:1146
int dpb_output_delay_length
dpb_output_delay_length_minus1 + 1
Definition: h264.h:216
uint8_t * visualization_buffer[3]
temporary buffer vor MV visualization
Definition: h264.h:679
int ff_h264_check_intra4x4_pred_mode(H264Context *h)
Check if the top &amp; left blocks are available if needed and change the dc mode so it only uses the ava...
Definition: h264.c:518
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
Definition: h264.c:1329
Definition: h264.h:265
int vui_parameters_present_flag
Definition: h264.h:191
2: bottom field
Definition: h264.h:140
#define QP_MAX_NUM
Definition: h264.h:101
AVColorTransferCharacteristic
Definition: avcodec.h:632
int resync_mb_x
Definition: h264.h:488
int16_t mb[16 *48 *2]
as a dct coeffecient is int32_t in high depth, we need to reserve twice the space.
Definition: h264.h:449
void * buf
Definition: avisynth_c.h:594
int prev_mb_skipped
Definition: h264.h:322
int constraint_set_flags
constraint_set[0-3]_flag
Definition: h264.h:220
SEI_PicStructType sei_pic_struct
pic_struct in picture timing SEI message
Definition: h264.h:609
BYTE int const BYTE int int int height
Definition: avisynth_c.h:713
Picture * short_ref[32]
Definition: h264.h:553
AVColorPrimaries
Definition: avcodec.h:621
Bi-dir predicted.
Definition: avcodec.h:2306
int slice_beta_offset
Definition: h264.h:501
uint32_t(*[6] dequant8_coeff)[64]
Definition: h264.h:396
int qp_thresh
QP threshold to skip loopfilter.
Definition: h264.h:305
rational number numerator/denominator
Definition: rational.h:43
#define MAX_MMCO_COUNT
Definition: h264.h:45
int pixel_shift
0 for 8-bit H264, 1 for high-bit-depth H264
Definition: h264.h:302
int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb, int first_slice)
Definition: h264_refs.c:744
int16_t mb_padding[256 *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:451
AVPictureType
Definition: avutil.h:253
buffering period (H.264, D.1.1)
Definition: h264.h:126
unsigned int sps_id
Definition: h264.h:228
int frame_packing_arrangement_cancel_flag
is previous arrangement canceled, -1 if never received
Definition: h264.h:254
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
Definition: h264.h:172
6: bottom field, top field, bottom field repeated, in that order
Definition: h264.h:144
int sei_buffering_period_present
Buffering period SEI flag.
Definition: h264.h:663
int16_t slice_row[MAX_SLICES]
to detect when MAX_SLICES is too low
Definition: h264.h:669
void ff_h264_draw_horiz_band(H264Context *h, int y, int height)
Definition: h264.c:235
Definition: h264.h:110
int block_offset[2 *(16 *3)]
block_offset[ 0..23] for frame macroblocks block_offset[24..47] for field macroblocks ...
Definition: h264.h:376
int quincunx_sampling_flag
Definition: h264.h:258
uint32_t time_scale
Definition: h264.h:201
int transform_8x8_mode
transform_8x8_mode_flag
Definition: h264.h:242
H.264 / AVC / MPEG4 prediction functions.
int pic_struct_present_flag
Definition: h264.h:211
uint8_t zigzag_scan[16]
Definition: h264.h:472
av_cold 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:5141
void ff_h264_filter_mb_fast(H264Context *h, 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 timing
Definition: h264.h:127
Definition: vp9.h:48
#define AV_COPY128(d, s)
Definition: intreadwrite.h:586
int is_complex
Definition: h264.h:496
AVBufferPool * qscale_table_pool
Definition: h264.h:681
int slice_context_count
Definition: h264.h:592
AVBufferPool * motion_val_pool
Definition: h264.h:683
int mb_height
pic_height_in_map_units_minus1 + 1
Definition: h264.h:180
Picture * DPB
Definition: h264.h:298
uint8_t * rbsp_buffer[2]
Definition: h264.h:508
int init_qs
pic_init_qs_minus26 + 26
Definition: h264.h:237
int qscale
Definition: h264.h:312
int dist_scale_factor_field[2][32]
Definition: h264.h:427
static float t
Definition: muxing.c:123
#define tprintf(p,...)
Definition: get_bits.h:654
int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size)
Definition: h264.c:1492
uint8_t parse_history[4]
Definition: h264.h:673
int nal_hrd_parameters_present_flag
Definition: h264.h:209
const uint8_t * intra_pcm_ptr
Definition: h264.h:448
ptrdiff_t mb_linesize
may be equal to s-&gt;linesize or s-&gt;linesize * 2, for mbaff
Definition: h264.h:382
uint16_t * slice_table_base
Definition: h264.h:526
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
Definition: h264.h:170
#define MB_TYPE_8x8
Definition: avcodec.h:844
const char * ff_h264_sei_stereo_mode(H264Context *h)
Get stereo_mode string from the h264 frame_packing_arrangement.
Definition: h264_sei.c:335
int cur_chroma_format_idc
Definition: h264.h:666
int long_arg
index, pic_num, or num long refs depending on opcode
Definition: h264.h:280
int sei_ct_type
Bit set of clock types for fields/frames in picture timing SEI message.
Definition: h264.h:624
int chroma_qp[2]
Definition: h264.h:303
#define MB_TYPE_16x8
Definition: avcodec.h:842
uint16_t sub_mb_type[4]
Definition: h264.h:411
int bit_depth_luma
bit_depth_luma_minus8 + 8
Definition: h264.h:217
static av_always_inline void write_back_intra_pred_mode(H264Context *h)
Definition: h264.h:906
int intra16x16_pred_mode
Definition: h264.h:327
int prev_poc_lsb
poc_lsb of the last reference pic for POC type 0
Definition: h264.h:535
#define AV_COPY64(d, s)
Definition: intreadwrite.h:582
uint8_t zigzag_scan8x8_cavlc_q0[64]
Definition: h264.h:480
int col_fieldoff
Definition: h264.h:425
Picture * cur_pic_ptr
Definition: h264.h:299
const uint16_t ff_h264_mb_sizes[4]
Definition: h264.c:55
uint8_t non_zero_count_cache[15 *8]
non zero coeff count cache.
Definition: h264.h:355
uint8_t(*[2] top_borders)[(16 *3)*2]
Definition: h264.h:349
Frame Packing Arrangement Type.
Definition: h264.h:252
int mb_width
Definition: h264.h:491
enum AVPictureType pict_type
Definition: h264.h:600
int current_slice
current slice number, used to initialize slice_num of each thread/context
Definition: h264.h:582
int mb_width
pic_width_in_mbs_minus1 + 1
Definition: h264.h:179
int slice_group_count
num_slice_groups_minus1 + 1
Definition: h264.h:231
uint32_t * mb2b_xy
Definition: h264.h:378
uint8_t field_scan8x8_cavlc_q0[64]
Definition: h264.h:483
int cpb_cnt
See H.264 E.1.2.
Definition: h264.h:213
int slice_type_fixed
Definition: h264.h:402
int delta_poc_bottom
Definition: h264.h:531
int ff_h264_fill_default_ref_list(H264Context *h)
Fill the default_ref_list.
Definition: h264_refs.c:116
H264DSPContext h264dsp
Definition: h264.h:289
uint8_t field_scan8x8[64]
Definition: h264.h:476
int chroma_weight_flag[2]
7.4.3.2 chroma_weight_lX_flag
Definition: h264.h:660
int8_t * intra4x4_pred_mode
Definition: h264.h:343
#define AV_ZERO128(d)
Definition: intreadwrite.h:614
const char int length
Definition: avisynth_c.h:668
int cpb_removal_delay_length
cpb_removal_delay_length_minus1 + 1
Definition: h264.h:215
8: frame tripling
Definition: h264.h:146
int deblocking_filter
disable_deblocking_filter_idc with 1 &lt;-&gt; 0
Definition: h264.h:499
uint8_t field_scan_q0[16]
Definition: h264.h:481
int map_col_to_list0_field[2][2][16+32]
Definition: h264.h:429
#define LIST_NOT_USED
Definition: h264.h:364
uint8_t(* non_zero_count)[48]
Definition: h264.h:357
unsigned int crop_bottom
frame_cropping_rect_bottom_offset
Definition: h264.h:190
float min
int slice_num
Definition: h264.h:398
int sei_recovery_frame_cnt
recovery_frame_cnt from SEI message
Definition: h264.h:643
int droppable
Definition: h264.h:313
int level_idc
Definition: h264.h:167
int nal_ref_idc
Definition: h264.h:506
uint8_t field_scan[16]
Definition: h264.h:475
int b_stride
Definition: h264.h:380
int sei_dpb_output_delay
dpb_output_delay in picture timing SEI message, see H.264 C.2.2
Definition: h264.h:629
unsigned int rbsp_buffer_size[2]
Definition: h264.h:509
recovery point (frame # to decoder sync)
Definition: h264.h:130
#define AV_RN64A(p)
Definition: intreadwrite.h:522
Context Adaptive Binary Arithmetic Coder.
DSPContext.
Definition: dsputil.h:124
int neighbor_transform_size
number of neighbors (top and/or left) that used 8x8 dct
Definition: h264.h:370
int8_t ref_cache[2][5 *8]
Definition: h264.h:363
int mb_mbaff
mb_aff_frame &amp;&amp; mb_field_decoding_flag
Definition: h264.h:407
int short_ref_count
number of actual short term references
Definition: h264.h:569
int mb_slice_group_map_type
Definition: h264.h:232
enum AVColorSpace colorspace
Definition: h264.h:198