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h264.h
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1 /*
2  * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * H.264 / AVC / MPEG4 part10 codec.
25  * @author Michael Niedermayer <michaelni@gmx.at>
26  */
27 
28 #ifndef AVCODEC_H264_H
29 #define AVCODEC_H264_H
30 
31 #include "libavutil/intreadwrite.h"
32 #include "cabac.h"
33 #include "error_resilience.h"
34 #include "get_bits.h"
35 #include "h264chroma.h"
36 #include "h264dsp.h"
37 #include "h264pred.h"
38 #include "h264qpel.h"
39 #include "internal.h" // for avpriv_find_start_code()
40 #include "mpegutils.h"
41 #include "parser.h"
42 #include "qpeldsp.h"
43 #include "rectangle.h"
44 #include "videodsp.h"
45 
46 #define H264_MAX_PICTURE_COUNT 36
47 #define H264_MAX_THREADS 32
48 
49 #define MAX_SPS_COUNT 32
50 #define MAX_PPS_COUNT 256
51 
52 #define MAX_MMCO_COUNT 66
53 
54 #define MAX_DELAYED_PIC_COUNT 16
55 
56 #define MAX_MBPAIR_SIZE (256*1024) // a tighter bound could be calculated if someone cares about a few bytes
57 
58 /* Compiling in interlaced support reduces the speed
59  * of progressive decoding by about 2%. */
60 #define ALLOW_INTERLACE
61 
62 #define FMO 0
63 
64 /**
65  * The maximum number of slices supported by the decoder.
66  * must be a power of 2
67  */
68 #define MAX_SLICES 32
69 
70 #ifdef ALLOW_INTERLACE
71 #define MB_MBAFF(h) (h)->mb_mbaff
72 #define MB_FIELD(h) (h)->mb_field_decoding_flag
73 #define FRAME_MBAFF(h) (h)->mb_aff_frame
74 #define FIELD_PICTURE(h) ((h)->picture_structure != PICT_FRAME)
75 #define LEFT_MBS 2
76 #define LTOP 0
77 #define LBOT 1
78 #define LEFT(i) (i)
79 #else
80 #define MB_MBAFF(h) 0
81 #define MB_FIELD(h) 0
82 #define FRAME_MBAFF(h) 0
83 #define FIELD_PICTURE(h) 0
84 #undef IS_INTERLACED
85 #define IS_INTERLACED(mb_type) 0
86 #define LEFT_MBS 1
87 #define LTOP 0
88 #define LBOT 0
89 #define LEFT(i) 0
90 #endif
91 #define FIELD_OR_MBAFF_PICTURE(h) (FRAME_MBAFF(h) || FIELD_PICTURE(h))
92 
93 #ifndef CABAC
94 #define CABAC(h) (h)->pps.cabac
95 #endif
96 
97 #define CHROMA(h) ((h)->sps.chroma_format_idc)
98 #define CHROMA422(h) ((h)->sps.chroma_format_idc == 2)
99 #define CHROMA444(h) ((h)->sps.chroma_format_idc == 3)
100 
101 #define EXTENDED_SAR 255
102 
103 #define MB_TYPE_REF0 MB_TYPE_ACPRED // dirty but it fits in 16 bit
104 #define MB_TYPE_8x8DCT 0x01000000
105 #define IS_REF0(a) ((a) & MB_TYPE_REF0)
106 #define IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT)
107 
108 #define QP_MAX_NUM (51 + 6*6) // The maximum supported qp
109 
110 /* NAL unit types */
111 enum {
113  NAL_DPA = 2,
114  NAL_DPB = 3,
115  NAL_DPC = 4,
117  NAL_SEI = 6,
118  NAL_SPS = 7,
119  NAL_PPS = 8,
120  NAL_AUD = 9,
126  NAL_FF_IGNORE = 0xff0f001,
127 };
128 
129 /**
130  * SEI message types
131  */
132 typedef enum {
133  SEI_TYPE_BUFFERING_PERIOD = 0, ///< buffering period (H.264, D.1.1)
134  SEI_TYPE_PIC_TIMING = 1, ///< picture timing
135  SEI_TYPE_USER_DATA_ITU_T_T35 = 4, ///< user data registered by ITU-T Recommendation T.35
136  SEI_TYPE_USER_DATA_UNREGISTERED = 5, ///< unregistered user data
137  SEI_TYPE_RECOVERY_POINT = 6, ///< recovery point (frame # to decoder sync)
138  SEI_TYPE_FRAME_PACKING = 45, ///< frame packing arrangement
139  SEI_TYPE_DISPLAY_ORIENTATION = 47, ///< display orientation
140 } SEI_Type;
141 
142 /**
143  * pic_struct in picture timing SEI message
144  */
145 typedef enum {
146  SEI_PIC_STRUCT_FRAME = 0, ///< 0: %frame
147  SEI_PIC_STRUCT_TOP_FIELD = 1, ///< 1: top field
148  SEI_PIC_STRUCT_BOTTOM_FIELD = 2, ///< 2: bottom field
149  SEI_PIC_STRUCT_TOP_BOTTOM = 3, ///< 3: top field, bottom field, in that order
150  SEI_PIC_STRUCT_BOTTOM_TOP = 4, ///< 4: bottom field, top field, in that order
151  SEI_PIC_STRUCT_TOP_BOTTOM_TOP = 5, ///< 5: top field, bottom field, top field repeated, in that order
152  SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM = 6, ///< 6: bottom field, top field, bottom field repeated, in that order
153  SEI_PIC_STRUCT_FRAME_DOUBLING = 7, ///< 7: %frame doubling
154  SEI_PIC_STRUCT_FRAME_TRIPLING = 8 ///< 8: %frame tripling
156 
157 /**
158  * frame_packing_arrangement types
159  */
160 typedef enum {
168 } SEI_FpaType;
169 
170 /**
171  * Sequence parameter set
172  */
173 typedef struct SPS {
174  unsigned int sps_id;
178  int transform_bypass; ///< qpprime_y_zero_transform_bypass_flag
179  int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4
180  int poc_type; ///< pic_order_cnt_type
181  int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4
185  int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle
186  int ref_frame_count; ///< num_ref_frames
188  int mb_width; ///< pic_width_in_mbs_minus1 + 1
189  int mb_height; ///< pic_height_in_map_units_minus1 + 1
191  int mb_aff; ///< mb_adaptive_frame_field_flag
193  int crop; ///< frame_cropping_flag
194 
195  /* those 4 are already in luma samples */
196  unsigned int crop_left; ///< frame_cropping_rect_left_offset
197  unsigned int crop_right; ///< frame_cropping_rect_right_offset
198  unsigned int crop_top; ///< frame_cropping_rect_top_offset
199  unsigned int crop_bottom; ///< frame_cropping_rect_bottom_offset
210  uint32_t time_scale;
212  short offset_for_ref_frame[256]; // FIXME dyn aloc?
222  int cpb_cnt; ///< See H.264 E.1.2
223  int initial_cpb_removal_delay_length; ///< initial_cpb_removal_delay_length_minus1 + 1
224  int cpb_removal_delay_length; ///< cpb_removal_delay_length_minus1 + 1
225  int dpb_output_delay_length; ///< dpb_output_delay_length_minus1 + 1
226  int bit_depth_luma; ///< bit_depth_luma_minus8 + 8
227  int bit_depth_chroma; ///< bit_depth_chroma_minus8 + 8
228  int residual_color_transform_flag; ///< residual_colour_transform_flag
229  int constraint_set_flags; ///< constraint_set[0-3]_flag
230  int new; ///< flag to keep track if the decoder context needs re-init due to changed SPS
231 } SPS;
232 
233 /**
234  * Picture parameter set
235  */
236 typedef struct PPS {
237  unsigned int sps_id;
238  int cabac; ///< entropy_coding_mode_flag
239  int pic_order_present; ///< pic_order_present_flag
240  int slice_group_count; ///< num_slice_groups_minus1 + 1
242  unsigned int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1
243  int weighted_pred; ///< weighted_pred_flag
245  int init_qp; ///< pic_init_qp_minus26 + 26
246  int init_qs; ///< pic_init_qs_minus26 + 26
248  int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag
249  int constrained_intra_pred; ///< constrained_intra_pred_flag
250  int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag
251  int transform_8x8_mode; ///< transform_8x8_mode_flag
254  uint8_t chroma_qp_table[2][QP_MAX_NUM+1]; ///< pre-scaled (with chroma_qp_index_offset) version of qp_table
256 } PPS;
257 
258 /**
259  * Frame Packing Arrangement Type
260  */
261 typedef struct FPA {
263  int frame_packing_arrangement_cancel_flag; ///< is previous arrangement canceled, -1 if never received
268 } FPA;
269 
270 /**
271  * Memory management control operation opcode.
272  */
273 typedef enum MMCOOpcode {
274  MMCO_END = 0,
281 } MMCOOpcode;
282 
283 /**
284  * Memory management control operation.
285  */
286 typedef struct MMCO {
288  int short_pic_num; ///< pic_num without wrapping (pic_num & max_pic_num)
289  int long_arg; ///< index, pic_num, or num long refs depending on opcode
290 } MMCO;
291 
292 typedef struct H264Picture {
293  struct AVFrame f;
294  uint8_t avframe_padding[1024]; // hack to allow linking to a avutil with larger AVFrame
296 
298  int8_t *qscale_table;
299 
301  int16_t (*motion_val[2])[2];
302 
304  uint32_t *mb_type;
305 
307  void *hwaccel_picture_private; ///< hardware accelerator private data
308 
310  int8_t *ref_index[2];
311 
312  int field_poc[2]; ///< top/bottom POC
313  int poc; ///< frame POC
314  int frame_num; ///< frame_num (raw frame_num from slice header)
315  int mmco_reset; /**< MMCO_RESET set this 1. Reordering code must
316  not mix pictures before and after MMCO_RESET. */
317  int pic_id; /**< pic_num (short -> no wrap version of pic_num,
318  pic_num & max_pic_num; long -> long_pic_num) */
319  int long_ref; ///< 1->long term reference 0->short term reference
320  int ref_poc[2][2][32]; ///< POCs of the frames/fields used as reference (FIXME need per slice)
321  int ref_count[2][2]; ///< number of entries in ref_poc (FIXME need per slice)
322  int mbaff; ///< 1 -> MBAFF frame 0-> not MBAFF
323  int field_picture; ///< whether or not picture was encoded in separate fields
324 
325  int needs_realloc; ///< picture needs to be reallocated (eg due to a frame size change)
327  int recovered; ///< picture at IDR or recovery point + recovery count
330 
331  int crop;
333  int crop_top;
334 } H264Picture;
335 
336 /**
337  * H264Context
338  */
339 typedef struct H264Context {
348 
353 
354  int pixel_shift; ///< 0 for 8-bit H264, 1 for high-bit-depth H264
355  int chroma_qp[2]; // QPc
356 
357  int qp_thresh; ///< QP threshold to skip loopfilter
358 
359  /* coded dimensions -- 16 * mb w/h */
360  int width, height;
361  ptrdiff_t linesize, uvlinesize;
363 
364  int qscale;
368 
370  int flags;
372 
375 
376  // prediction stuff
379 
384 
386  int top_type;
389 
392 
397  unsigned int top_samples_available;
400  uint8_t (*top_borders[2])[(16 * 3) * 2];
401 
402  /**
403  * non zero coeff count cache.
404  * is 64 if not available.
405  */
407 
409 
410  /**
411  * Motion vector cache.
412  */
413  DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2];
414  DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8];
415 #define LIST_NOT_USED -1 // FIXME rename?
416 #define PART_NOT_AVAILABLE -2
417 
418  /**
419  * number of neighbors (top and/or left) that used 8x8 dct
420  */
422 
423  /**
424  * block_offset[ 0..23] for frame macroblocks
425  * block_offset[24..47] for field macroblocks
426  */
427  int block_offset[2 * (16 * 3)];
428 
429  uint32_t *mb2b_xy; // FIXME are these 4 a good idea?
430  uint32_t *mb2br_xy;
431  int b_stride; // FIXME use s->b4_stride
432 
433  ptrdiff_t mb_linesize; ///< may be equal to s->linesize or s->linesize * 2, for mbaff
434  ptrdiff_t mb_uvlinesize;
435 
436  unsigned current_sps_id; ///< id of the current SPS
437  SPS sps; ///< current sps
438  PPS pps; ///< current pps
439 
440  int au_pps_id; ///< pps_id of current access unit
441 
442  uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; // FIXME should these be moved down?
443  uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64];
444  uint32_t(*dequant4_coeff[6])[16];
445  uint32_t(*dequant8_coeff[6])[64];
446 
448  uint16_t *slice_table; ///< slice_table_base + 2*mb_stride + 1
450  int slice_type_nos; ///< S free slice type (SI/SP are remapped to I/P)
452 
453  // interlacing specific flags
456  int mb_mbaff; ///< mb_aff_frame && mb_field_decoding_flag
459 
460  DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4];
461 
462  // Weighted pred stuff
467  // The following 2 can be changed to int8_t but that causes 10cpu cycles speedloss
468  int luma_weight[48][2][2];
469  int chroma_weight[48][2][2][2];
470  int implicit_weight[48][48][2];
471 
477  int map_col_to_list0[2][16 + 32];
478  int map_col_to_list0_field[2][2][16 + 32];
479 
480  /**
481  * num_ref_idx_l0/1_active_minus1 + 1
482  */
483  unsigned int ref_count[2]; ///< counts frames or fields, depending on current mb mode
484  unsigned int list_count;
485  uint8_t *list_counts; ///< Array of list_count per MB specifying the slice type
486  H264Picture ref_list[2][48]; /**< 0..15: frame refs, 16..47: mbaff field refs.
487  * Reordered version of default_ref_list
488  * according to picture reordering in slice header */
489  int ref2frm[MAX_SLICES][2][64]; ///< reference to frame number lists, used in the loop filter, the first 2 are for -2,-1
490 
491  // data partitioning
496 
498  DECLARE_ALIGNED(16, int16_t, mb)[16 * 48 * 2]; ///< as a dct coefficient is int32_t in high depth, we need to reserve twice the space.
499  DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2];
500  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
501 
502  /**
503  * Cabac
504  */
507 
508  /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0, 1, 2), 0x0? luma_cbp */
509  uint16_t *cbp_table;
510  int cbp;
511  int top_cbp;
512  int left_cbp;
513  /* chroma_pred_mode for i4x4 or i16x16, else 0 */
516  uint8_t (*mvd_table[2])[2];
517  DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5 * 8][2];
520 
533 
535 
536  int mb_x, mb_y;
543  int mb_num;
544  int mb_xy;
545 
547 
548  // deblock
549  int deblocking_filter; ///< disable_deblocking_filter_idc with 1 <-> 0
552 
553  // =============================================================
554  // Things below are not used in the MB or more inner code
555 
559  unsigned int rbsp_buffer_size[2];
560 
561  /**
562  * Used to parse AVC variant of h264
563  */
564  int is_avc; ///< this flag is != 0 if codec is avc1
565  int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
566 
567  int bit_depth_luma; ///< luma bit depth from sps to detect changes
568  int chroma_format_idc; ///< chroma format from sps to detect changes
569 
572 
573  int dequant_coeff_pps; ///< reinit tables when pps changes
574 
575  uint16_t *slice_table_base;
576 
577  // POC stuff
578  int poc_lsb;
579  int poc_msb;
581  int delta_poc[2];
583  int prev_poc_msb; ///< poc_msb of the last reference pic for POC type 0
584  int prev_poc_lsb; ///< poc_lsb of the last reference pic for POC type 0
585  int frame_num_offset; ///< for POC type 2
586  int prev_frame_num_offset; ///< for POC type 2
587  int prev_frame_num; ///< frame_num of the last pic for POC type 1/2
588 
589  /**
590  * frame_num for frames or 2 * frame_num + 1 for field pics.
591  */
593 
594  /**
595  * max_frame_num or 2 * max_frame_num for field pics.
596  */
598 
600 
601  H264Picture default_ref_list[2][32]; ///< base reference list for all slices of a coded picture
609 
610  /**
611  * memory management control operations buffer.
612  */
616 
617  int long_ref_count; ///< number of actual long term references
618  int short_ref_count; ///< number of actual short term references
619 
621 
622  /**
623  * @name Members for slice based multithreading
624  * @{
625  */
627 
628  /**
629  * current slice number, used to initialize slice_num of each thread/context
630  */
632 
633  /**
634  * Max number of threads / contexts.
635  * This is equal to AVCodecContext.thread_count unless
636  * multithreaded decoding is impossible, in which case it is
637  * reduced to 1.
638  */
640 
642 
643  /**
644  * 1 if the single thread fallback warning has already been
645  * displayed, 0 otherwise.
646  */
648 
650 
652  unsigned int last_ref_count[2];
653  /** @} */
654 
655  /**
656  * pic_struct in picture timing SEI message
657  */
659 
660  /**
661  * Complement sei_pic_struct
662  * SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced frames.
663  * However, soft telecined frames may have these values.
664  * This is used in an attempt to flag soft telecine progressive.
665  */
667 
668  /**
669  * frame_packing_arrangment SEI message
670  */
675 
676  /**
677  * display orientation SEI message
678  */
682 
683  /**
684  * Bit set of clock types for fields/frames in picture timing SEI message.
685  * For each found ct_type, appropriate bit is set (e.g., bit 1 for
686  * interlaced).
687  */
689 
690  /**
691  * dpb_output_delay in picture timing SEI message, see H.264 C.2.2
692  */
694 
695  /**
696  * cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
697  */
699 
700  /**
701  * recovery_frame_cnt from SEI message
702  *
703  * Set to -1 if no recovery point SEI message found or to number of frames
704  * before playback synchronizes. Frames having recovery point are key
705  * frames.
706  */
708 
709  /**
710  * Are the SEI recovery points looking valid.
711  */
713 
715 
716  /**
717  * recovery_frame is the frame_num at which the next frame should
718  * be fully constructed.
719  *
720  * Set to -1 when not expecting a recovery point.
721  */
723 
724 /**
725  * We have seen an IDR, so all the following frames in coded order are correctly
726  * decodable.
727  */
728 #define FRAME_RECOVERED_IDR (1 << 0)
729 /**
730  * Sufficient number of frames have been decoded since a SEI recovery point,
731  * so all the following frames in presentation order are correct.
732  */
733 #define FRAME_RECOVERED_SEI (1 << 1)
734 
735  int frame_recovered; ///< Initial frame has been completely recovered
736 
738 
740 
741  int luma_weight_flag[2]; ///< 7.4.3.2 luma_weight_lX_flag
742  int chroma_weight_flag[2]; ///< 7.4.3.2 chroma_weight_lX_flag
743 
744  // Timestamp stuff
745  int sei_buffering_period_present; ///< Buffering period SEI flag
746  int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs
747 
750 
751  int16_t slice_row[MAX_SLICES]; ///< to detect when MAX_SLICES is too low
752 
757  int16_t *dc_val_base;
758 
763 
764  /* Motion Estimation */
767 } H264Context;
768 
769 extern const uint8_t ff_h264_chroma_qp[7][QP_MAX_NUM + 1]; ///< One chroma qp table for each possible bit depth (8-14).
770 extern const uint16_t ff_h264_mb_sizes[4];
771 
772 /**
773  * Decode SEI
774  */
776 
777 /**
778  * Decode SPS
779  */
780 int ff_h264_decode_seq_parameter_set(H264Context *h, int ignore_truncation);
781 
782 /**
783  * compute profile from sps
784  */
786 
787 /**
788  * Decode PPS
789  */
790 int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length);
791 
792 /**
793  * Decode a network abstraction layer unit.
794  * @param consumed is the number of bytes used as input
795  * @param length is the length of the array
796  * @param dst_length is the number of decoded bytes FIXME here
797  * or a decode rbsp tailing?
798  * @return decoded bytes, might be src+1 if no escapes
799  */
801  int *dst_length, int *consumed, int length);
802 
803 /**
804  * Free any data that may have been allocated in the H264 context
805  * like SPS, PPS etc.
806  */
808 
809 /**
810  * Reconstruct bitstream slice_type.
811  */
812 int ff_h264_get_slice_type(const H264Context *h);
813 
814 /**
815  * Allocate tables.
816  * needs width/height
817  */
819 
820 /**
821  * Fill the default_ref_list.
822  */
824 
828 
829 /**
830  * Execute the reference picture marking (memory management control operations).
831  */
832 int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count);
833 
835  int first_slice);
836 
837 int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice);
838 
839 /**
840  * Check if the top & left blocks are available if needed & change the
841  * dc mode so it only uses the available blocks.
842  */
844 
845 /**
846  * Check if the top & left blocks are available if needed & change the
847  * dc mode so it only uses the available blocks.
848  */
849 int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma);
850 
854 void ff_h264_decode_init_vlc(void);
855 
856 /**
857  * Decode a macroblock
858  * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
859  */
861 
862 /**
863  * Decode a CABAC coded macroblock
864  * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
865  */
867 
869 
871 
874 void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type);
875 
876 void ff_h264_filter_mb_fast(H264Context *h, int mb_x, int mb_y,
877  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
878  unsigned int linesize, unsigned int uvlinesize);
879 void ff_h264_filter_mb(H264Context *h, int mb_x, int mb_y,
880  uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
881  unsigned int linesize, unsigned int uvlinesize);
882 
883 /**
884  * Reset SEI values at the beginning of the frame.
885  *
886  * @param h H.264 context.
887  */
889 
890 /**
891  * Get stereo_mode string from the h264 frame_packing_arrangement
892  * @param h H.264 context.
893  */
894 const char* ff_h264_sei_stereo_mode(H264Context *h);
895 
896 #define COPY_PICTURE(dst, src) \
897 do {\
898  *(dst) = *(src);\
899  (dst)->f.extended_data = (dst)->f.data;\
900  (dst)->tf.f = &(dst)->f;\
901 } while (0)
902 
903 /*
904  * o-o o-o
905  * / / /
906  * o-o o-o
907  * ,---'
908  * o-o o-o
909  * / / /
910  * o-o o-o
911  */
912 
913 /* Scan8 organization:
914  * 0 1 2 3 4 5 6 7
915  * 0 DY y y y y y
916  * 1 y Y Y Y Y
917  * 2 y Y Y Y Y
918  * 3 y Y Y Y Y
919  * 4 y Y Y Y Y
920  * 5 DU u u u u u
921  * 6 u U U U U
922  * 7 u U U U U
923  * 8 u U U U U
924  * 9 u U U U U
925  * 10 DV v v v v v
926  * 11 v V V V V
927  * 12 v V V V V
928  * 13 v V V V V
929  * 14 v V V V V
930  * DY/DU/DV are for luma/chroma DC.
931  */
932 
933 #define LUMA_DC_BLOCK_INDEX 48
934 #define CHROMA_DC_BLOCK_INDEX 49
935 
936 // This table must be here because scan8[constant] must be known at compiletime
937 static const uint8_t scan8[16 * 3 + 3] = {
938  4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8,
939  6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8,
940  4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8,
941  6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8,
942  4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8,
943  6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8,
944  4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8,
945  6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8,
946  4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8,
947  6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8,
948  4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8,
949  6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8,
950  0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8
951 };
952 
953 static av_always_inline uint32_t pack16to32(int a, int b)
954 {
955 #if HAVE_BIGENDIAN
956  return (b & 0xFFFF) + (a << 16);
957 #else
958  return (a & 0xFFFF) + (b << 16);
959 #endif
960 }
961 
962 static av_always_inline uint16_t pack8to16(int a, int b)
963 {
964 #if HAVE_BIGENDIAN
965  return (b & 0xFF) + (a << 8);
966 #else
967  return (a & 0xFF) + (b << 8);
968 #endif
969 }
970 
971 /**
972  * Get the chroma qp.
973  */
975 {
976  return h->pps.chroma_qp_table[t][qscale];
977 }
978 
979 /**
980  * Get the predicted intra4x4 prediction mode.
981  */
983 {
984  const int index8 = scan8[n];
985  const int left = h->intra4x4_pred_mode_cache[index8 - 1];
986  const int top = h->intra4x4_pred_mode_cache[index8 - 8];
987  const int min = FFMIN(left, top);
988 
989  tprintf(h->avctx, "mode:%d %d min:%d\n", left, top, min);
990 
991  if (min < 0)
992  return DC_PRED;
993  else
994  return min;
995 }
996 
998 {
999  int8_t *i4x4 = h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
1000  int8_t *i4x4_cache = h->intra4x4_pred_mode_cache;
1001 
1002  AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
1003  i4x4[4] = i4x4_cache[7 + 8 * 3];
1004  i4x4[5] = i4x4_cache[7 + 8 * 2];
1005  i4x4[6] = i4x4_cache[7 + 8 * 1];
1006 }
1007 
1009 {
1010  const int mb_xy = h->mb_xy;
1011  uint8_t *nnz = h->non_zero_count[mb_xy];
1012  uint8_t *nnz_cache = h->non_zero_count_cache;
1013 
1014  AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]);
1015  AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]);
1016  AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]);
1017  AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]);
1018  AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]);
1019  AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]);
1020  AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]);
1021  AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]);
1022 
1023  if (!h->chroma_y_shift) {
1024  AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]);
1025  AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]);
1026  AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]);
1027  AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]);
1028  }
1029 }
1030 
1032  int b_stride,
1033  int b_xy, int b8_xy,
1034  int mb_type, int list)
1035 {
1036  int16_t(*mv_dst)[2] = &h->cur_pic.motion_val[list][b_xy];
1037  int16_t(*mv_src)[2] = &h->mv_cache[list][scan8[0]];
1038  AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0);
1039  AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1);
1040  AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2);
1041  AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3);
1042  if (CABAC(h)) {
1043  uint8_t (*mvd_dst)[2] = &h->mvd_table[list][FMO ? 8 * h->mb_xy
1044  : h->mb2br_xy[h->mb_xy]];
1045  uint8_t(*mvd_src)[2] = &h->mvd_cache[list][scan8[0]];
1046  if (IS_SKIP(mb_type)) {
1047  AV_ZERO128(mvd_dst);
1048  } else {
1049  AV_COPY64(mvd_dst, mvd_src + 8 * 3);
1050  AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0);
1051  AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1);
1052  AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2);
1053  }
1054  }
1055 
1056  {
1057  int8_t *ref_index = &h->cur_pic.ref_index[list][b8_xy];
1058  int8_t *ref_cache = h->ref_cache[list];
1059  ref_index[0 + 0 * 2] = ref_cache[scan8[0]];
1060  ref_index[1 + 0 * 2] = ref_cache[scan8[4]];
1061  ref_index[0 + 1 * 2] = ref_cache[scan8[8]];
1062  ref_index[1 + 1 * 2] = ref_cache[scan8[12]];
1063  }
1064 }
1065 
1066 static av_always_inline void write_back_motion(H264Context *h, int mb_type)
1067 {
1068  const int b_stride = h->b_stride;
1069  const int b_xy = 4 * h->mb_x + 4 * h->mb_y * h->b_stride; // try mb2b(8)_xy
1070  const int b8_xy = 4 * h->mb_xy;
1071 
1072  if (USES_LIST(mb_type, 0)) {
1073  write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 0);
1074  } else {
1075  fill_rectangle(&h->cur_pic.ref_index[0][b8_xy],
1076  2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
1077  }
1078  if (USES_LIST(mb_type, 1))
1079  write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 1);
1080 
1081  if (h->slice_type_nos == AV_PICTURE_TYPE_B && CABAC(h)) {
1082  if (IS_8X8(mb_type)) {
1083  uint8_t *direct_table = &h->direct_table[4 * h->mb_xy];
1084  direct_table[1] = h->sub_mb_type[1] >> 1;
1085  direct_table[2] = h->sub_mb_type[2] >> 1;
1086  direct_table[3] = h->sub_mb_type[3] >> 1;
1087  }
1088  }
1089 }
1090 
1092 {
1094  return !(AV_RN64A(h->sub_mb_type) &
1096  0x0001000100010001ULL));
1097  else
1098  return !(AV_RN64A(h->sub_mb_type) &
1100  0x0001000100010001ULL));
1101 }
1102 
1103 static inline int find_start_code(const uint8_t *buf, int buf_size,
1104  int buf_index, int next_avc)
1105 {
1106  uint32_t state = -1;
1107 
1108  buf_index = avpriv_find_start_code(buf + buf_index, buf + next_avc + 1, &state) - buf - 1;
1109 
1110  return FFMIN(buf_index, buf_size);
1111 }
1112 
1113 static inline int get_avc_nalsize(H264Context *h, const uint8_t *buf,
1114  int buf_size, int *buf_index)
1115 {
1116  int i, nalsize = 0;
1117 
1118  if (*buf_index >= buf_size - h->nal_length_size)
1119  return -1;
1120 
1121  for (i = 0; i < h->nal_length_size; i++)
1122  nalsize = ((unsigned)nalsize << 8) | buf[(*buf_index)++];
1123  if (nalsize <= 0 || nalsize > buf_size - *buf_index) {
1125  "AVC: nal size %d\n", nalsize);
1126  return -1;
1127  }
1128  return nalsize;
1129 }
1130 
1131 int ff_h264_field_end(H264Context *h, int in_setup);
1132 
1135 
1138 
1139 void ff_h264_draw_horiz_band(H264Context *h, int y, int height);
1140 int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc);
1143 
1145 #define SLICE_SINGLETHREAD 1
1146 #define SLICE_SKIPED 2
1147 
1148 int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count);
1150  const AVCodecContext *src);
1151 
1153 
1154 void ff_h264_free_tables(H264Context *h, int free_rbsp);
1155 
1157 
1158 #endif /* AVCODEC_H264_H */
int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc)
Definition: h264.c:1120
int chroma_format_idc
Definition: h264.h:177
static av_always_inline uint16_t pack8to16(int a, int b)
Definition: h264.h:962
void ff_h264_direct_dist_scale_factor(H264Context *const h)
Definition: h264_direct.c:50
GetBitContext inter_gb
Definition: h264.h:493
int video_signal_type_present_flag
Definition: h264.h:202
static av_always_inline int get_dct8x8_allowed(H264Context *h)
Definition: h264.h:1091
int last_slice_type
Definition: h264.h:651
int ff_h264_decode_mb_cabac(H264Context *h)
Decode a CABAC coded macroblock.
Definition: h264_cabac.c:1885
void ff_h264_unref_picture(H264Context *h, H264Picture *pic)
Definition: h264_picture.c:47
Memory management control operation.
Definition: h264.h:286
uint8_t * edge_emu_buffer
Definition: h264.h:756
int workaround_bugs
Definition: h264.h:371
int long_ref
1->long term reference 0->short term reference
Definition: h264.h:319
unsigned int top_samples_available
Definition: h264.h:397
unsigned int topleft_samples_available
Definition: h264.h:396
int single_decode_warning
1 if the single thread fallback warning has already been displayed, 0 otherwise.
Definition: h264.h:647
GetBitContext gb
Definition: h264.h:346
int sei_recovery_frame_cnt
Definition: h264.h:329
int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count)
Call decode_slice() for each context.
Definition: h264_slice.c:2602
5: top field, bottom field, top field repeated, in that order
Definition: h264.h:151
int sei_cpb_removal_delay
cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
Definition: h264.h:698
int low_delay
Definition: h264.h:367
int mb_num
Definition: h264.h:543
GetBitContext * intra_gb_ptr
Definition: h264.h:494
This structure describes decoded (raw) audio or video data.
Definition: frame.h:163
int mb_aff_frame
Definition: h264.h:454
int topleft_type
Definition: h264.h:385
uint8_t parse_history[6]
Definition: h264.h:753
int delta_poc[2]
Definition: h264.h:581
ptrdiff_t uvlinesize
Definition: h264.h:361
int last_qscale_diff
Definition: h264.h:515
#define LEFT_MBS
Definition: h264.h:75
int quincunx_subsampling
Definition: h264.h:674
int cbp
Definition: h264.h:510
3: top field, bottom field, in that order
Definition: h264.h:149
int first_field
Definition: h264.h:458
int ff_h264_check_intra4x4_pred_mode(H264Context *h)
Check if the top & left blocks are available if needed & change the dc mode so it only uses the avail...
Definition: h264.c:145
uint8_t field_scan8x8_q0[64]
Definition: h264.h:531
unregistered user data
Definition: h264.h:136
Definition: h264.h:113
int weighted_bipred_idc
Definition: h264.h:244
int ff_h264_get_slice_type(const H264Context *h)
Reconstruct bitstream slice_type.
Definition: h264_slice.c:2031
int chroma_qp_index_offset[2]
Definition: h264.h:247
int left_type[LEFT_MBS]
Definition: h264.h:388
H264ChromaContext h264chroma
Definition: h264.h:344
uint8_t cabac_state[1024]
Definition: h264.h:506
uint16_t * cbp_table
Definition: h264.h:509
int scaling_matrix_present
Definition: h264.h:215
int luma_weight_flag[2]
7.4.3.2 luma_weight_lX_flag
Definition: h264.h:741
MMCO mmco[MAX_MMCO_COUNT]
memory management control operations buffer.
Definition: h264.h:613
uint8_t scaling_matrix4[6][16]
Definition: h264.h:216
int topleft_partition
Definition: h264.h:391
7: frame doubling
Definition: h264.h:153
#define MAX_PPS_COUNT
Definition: h264.h:50
Sequence parameter set.
Definition: h264.h:173
int initial_cpb_removal_delay[32]
Initial timestamps for CPBs.
Definition: h264.h:746
int mb_y
Definition: h264.h:536
int coded_picture_number
Definition: h264.h:366
int bitstream_restriction_flag
Definition: h264.h:213
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:242
#define FMO
Definition: h264.h:62
Definition: h264.h:115
AVBufferRef * mb_type_buf
Definition: h264.h:303
H264Picture * DPB
Definition: h264.h:349
const char * b
Definition: vf_curves.c:109
AVBufferPool * mb_type_pool
Definition: h264.h:760
int outputed_poc
Definition: h264.h:607
int chroma_x_shift
Definition: h264.h:362
qpel_mc_func(* qpel_put)[16]
Definition: h264.h:765
uint8_t avframe_padding[1024]
Definition: h264.h:294
Picture parameter set.
Definition: h264.h:236
int crop
Definition: h264.h:331
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:53
int16_t(*[2] motion_val)[2]
Definition: h264.h:301
int flags
Definition: h264.h:370
int frame_mbs_only_flag
Definition: h264.h:190
int mb_height
Definition: h264.h:541
int16_t * dc_val_base
Definition: h264.h:757
H264Picture * delayed_pic[MAX_DELAYED_PIC_COUNT+2]
Definition: h264.h:604
int is_avc
Used to parse AVC variant of h264.
Definition: h264.h:564
int mmco_index
Definition: h264.h:614
AVBufferPool * ref_index_pool
Definition: h264.h:762
MMCOOpcode
Memory management control operation opcode.
Definition: h264.h:273
uint8_t zigzag_scan8x8_cavlc[64]
Definition: h264.h:523
void(* qpel_mc_func)(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
Definition: qpeldsp.h:65
uint32_t dequant8_buffer[6][QP_MAX_NUM+1][64]
Definition: h264.h:443
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
Definition: h264.h:413
void ff_h264_decode_init_vlc(void)
Definition: h264_cavlc.c:326
H264Context.
Definition: h264.h:339
int prev_poc_msb
poc_msb of the last reference pic for POC type 0
Definition: h264.h:583
int chroma_qp_diff
Definition: h264.h:255
int frame_packing_arrangement_repetition_period
Definition: h264.h:265
static av_always_inline void write_back_motion(H264Context *h, int mb_type)
Definition: h264.h:1066
uint32_t num_units_in_tick
Definition: h264.h:209
4: bottom field, top field, in that order
Definition: h264.h:150
struct AVFrame f
Definition: h264.h:293
H264Picture * long_ref[32]
Definition: h264.h:603
int picture_structure
Definition: h264.h:457
int slice_type_nos
S free slice type (SI/SP are remapped to I/P)
Definition: h264.h:450
#define AV_COPY32(d, s)
Definition: intreadwrite.h:586
int profile_idc
Definition: h264.h:175
int frame_packing_arrangement_id
Definition: h264.h:262
unsigned current_sps_id
id of the current SPS
Definition: h264.h:436
MMCOOpcode opcode
Definition: h264.h:287
AVColorTransferCharacteristic
Color Transfer Characteristic.
Definition: pixfmt.h:469
H.264 DSP functions.
static av_always_inline uint32_t pack16to32(int a, int b)
Definition: h264.h:953
int mb_skip_run
Definition: h264.h:540
void ff_h264_init_cabac_states(H264Context *h)
Definition: h264_cabac.c:1264
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:1920
static av_always_inline int pred_intra_mode(H264Context *h, int n)
Get the predicted intra4x4 prediction mode.
Definition: h264.h:982
uint8_t * chroma_pred_mode_table
Definition: h264.h:514
int ff_h264_decode_ref_pic_list_reordering(H264Context *h)
Definition: h264_refs.c:213
unsigned int crop_top
frame_cropping_rect_top_offset
Definition: h264.h:198
#define USES_LIST(a, list)
Definition: mpegutils.h:95
int resync_mb_y
Definition: h264.h:538
int fixed_frame_rate_flag
Definition: h264.h:211
uint8_t scaling_matrix4[6][16]
Definition: h264.h:252
int parse_history_count
Definition: h264.h:754
int ref2frm[MAX_SLICES][2][64]
reference to frame number lists, used in the loop filter, the first 2 are for -2,-1 ...
Definition: h264.h:489
int deblocking_filter_parameters_present
deblocking_filter_parameters_present_flag
Definition: h264.h:248
int short_pic_num
pic_num without wrapping (pic_num & max_pic_num)
Definition: h264.h:288
uint32_t(*[6] dequant4_coeff)[16]
Definition: h264.h:444
int ff_h264_set_parameter_from_sps(H264Context *h)
Definition: h264.c:1225
uint8_t
int prev_frame_num_offset
for POC type 2
Definition: h264.h:586
int use_weight
Definition: h264.h:463
int ff_h264_context_init(H264Context *h)
Init context Allocate buffers which are not shared amongst multiple threads.
Definition: h264.c:492
SEI_FpaType frame_packing_arrangement_type
Definition: h264.h:264
int full_range
Definition: h264.h:203
unsigned int crop_left
frame_cropping_rect_left_offset
Definition: h264.h:196
int offset_for_non_ref_pic
Definition: h264.h:183
mode
Definition: f_perms.c:27
Definition: h264.h:114
int ff_pred_weight_table(H264Context *h)
Definition: h264.c:983
void ff_h264_reset_sei(H264Context *h)
Reset SEI values at the beginning of the frame.
Definition: h264_sei.c:37
int gaps_in_frame_num_allowed_flag
Definition: h264.h:187
int luma_weight[48][2][2]
Definition: h264.h:468
int field_picture
whether or not picture was encoded in separate fields
Definition: h264.h:323
int bit_depth_chroma
bit_depth_chroma_minus8 + 8
Definition: h264.h:227
AVColorSpace
YUV colorspace type.
Definition: pixfmt.h:492
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
Definition: h264.c:427
enum AVColorPrimaries color_primaries
Definition: h264.h:205
int poc
frame POC
Definition: h264.h:313
int cabac
entropy_coding_mode_flag
Definition: h264.h:238
int mb_xy
Definition: h264.h:544
static int find_start_code(const uint8_t *buf, int buf_size, int buf_index, int next_avc)
Definition: h264.h:1103
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264.h:483
unsigned int crop_right
frame_cropping_rect_right_offset
Definition: h264.h:197
SEI_PicStructType
pic_struct in picture timing SEI message
Definition: h264.h:145
unsigned int last_ref_count[2]
Definition: h264.h:652
int invalid_gap
Definition: h264.h:328
Context for storing H.264 prediction functions.
Definition: h264pred.h:92
void ff_h264_fill_mbaff_ref_list(H264Context *h)
Definition: h264_refs.c:344
quarterpel DSP functions
int frame_recovered
Initial frame has been completely recovered.
Definition: h264.h:735
int height
Definition: h264.h:360
int mb_x
Definition: h264.h:536
int transform_bypass
qpprime_y_zero_transform_bypass_flag
Definition: h264.h:178
H264Picture default_ref_list[2][32]
base reference list for all slices of a coded picture
Definition: h264.h:601
int left_mb_xy[LEFT_MBS]
Definition: h264.h:383
int top_mb_xy
Definition: h264.h:381
qpel_mc_func(* qpel_avg)[16]
Definition: h264.h:766
int redundant_pic_cnt_present
redundant_pic_cnt_present_flag
Definition: h264.h:250
bitstream reader API header.
int chroma_y_shift
Definition: h264.h:362
#define MAX_DELAYED_PIC_COUNT
Definition: h264.h:54
static void fill_rectangle(SDL_Surface *screen, int x, int y, int w, int h, int color, int update)
Definition: ffplay.c:779
ptrdiff_t size
Definition: opengl_enc.c:101
int topright_type
Definition: h264.h:387
Definition: h264.h:120
AVBufferRef * qscale_table_buf
Definition: h264.h:297
SEI_Type
SEI message types.
Definition: h264.h:132
AVColorPrimaries
Chromaticity coordinates of the source primaries.
Definition: pixfmt.h:451
int recovered
picture at IDR or recovery point + recovery count
Definition: h264.h:327
#define AV_COPY64(d, s)
Definition: intreadwrite.h:590
int luma_log2_weight_denom
Definition: h264.h:465
uint8_t direct_cache[5 *8]
Definition: h264.h:519
#define av_log(a,...)
int sei_vflip
Definition: h264.h:681
int chroma_weight[48][2][2][2]
Definition: h264.h:469
The buffer pool.
const uint8_t * avpriv_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state)
int last_pocs[MAX_DELAYED_PIC_COUNT]
Definition: h264.h:605
int width
Definition: h264.h:360
#define MAX_SLICES
The maximum number of slices supported by the decoder.
Definition: h264.h:68
int frame_num
Definition: h264.h:582
const uint8_t ff_h264_chroma_qp[7][QP_MAX_NUM+1]
One chroma qp table for each possible bit depth (8-14).
Definition: h264_ps.c:53
enum AVColorTransferCharacteristic color_trc
Definition: h264.h:206
int mb_aff
mb_adaptive_frame_field_flag
Definition: h264.h:191
H264PredContext hpc
Definition: h264.h:395
int ff_h264_decode_slice_header(H264Context *h, H264Context *h0)
Decode a slice header.
Definition: h264_slice.c:1281
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:175
int16_t mb_luma_dc[3][16 *2]
Definition: h264.h:499
int poc_type
pic_order_cnt_type
Definition: h264.h:180
int context_initialized
Definition: h264.h:369
int top_cbp
Definition: h264.h:511
int constrained_intra_pred
constrained_intra_pred_flag
Definition: h264.h:249
int nal_unit_type
Definition: h264.h:557
int use_weight_chroma
Definition: h264.h:464
int num_reorder_frames
Definition: h264.h:214
void ff_h264_direct_ref_list_init(H264Context *const h)
Definition: h264_direct.c:107
static av_always_inline int get_chroma_qp(H264Context *h, int t, int qscale)
Get the chroma qp.
Definition: h264.h:974
const uint8_t * left_block
Definition: h264.h:390
void * hwaccel_picture_private
hardware accelerator private data
Definition: h264.h:307
GetBitContext * inter_gb_ptr
Definition: h264.h:495
int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size)
Definition: h264.c:566
int time_offset_length
Definition: h264.h:221
int mb_field_decoding_flag
Definition: h264.h:455
SEI_FpaType
frame_packing_arrangement types
Definition: h264.h:160
int parse_last_mb
Definition: h264.h:755
PPS pps
current pps
Definition: h264.h:438
uint8_t(*[2] mvd_table)[2]
Definition: h264.h:516
int prev_interlaced_frame
Complement sei_pic_struct SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced...
Definition: h264.h:666
int direct_spatial_mv_pred
Definition: h264.h:472
int ref_poc[2][2][32]
POCs of the frames/fields used as reference (FIXME need per slice)
Definition: h264.h:320
ThreadFrame tf
Definition: h264.h:295
0: frame
Definition: h264.h:146
int weighted_pred
weighted_pred_flag
Definition: h264.h:243
GLsizei GLsizei * length
Definition: opengl_enc.c:115
#define IS_SKIP(a)
Definition: mpegutils.h:77
H264QpelContext h264qpel
Definition: h264.h:345
ERContext er
Definition: h264.h:347
#define CABAC(h)
Definition: h264.h:94
int ff_h264_decode_mb_cavlc(H264Context *h)
Decode a macroblock.
Definition: h264_cavlc.c:699
void ff_h264_free_tables(H264Context *h, int free_rbsp)
Definition: h264.c:365
int frame_num
frame_num (raw frame_num from slice header)
Definition: h264.h:314
int valid_recovery_point
Are the SEI recovery points looking valid.
Definition: h264.h:712
int residual_color_transform_flag
residual_colour_transform_flag
Definition: h264.h:228
uint8_t * list_counts
Array of list_count per MB specifying the slice type.
Definition: h264.h:485
int delta_pic_order_always_zero_flag
Definition: h264.h:182
int map_col_to_list0[2][16+32]
Definition: h264.h:477
int offset_for_top_to_bottom_field
Definition: h264.h:184
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:1031
uint8_t zigzag_scan8x8[64]
Definition: h264.h:522
AVBufferRef * hwaccel_priv_buf
Definition: h264.h:306
int col_parity
Definition: h264.h:473
static const uint8_t scan8[16 *3+3]
Definition: h264.h:937
const uint16_t ff_h264_mb_sizes[4]
Definition: h264.c:54
int crop_left
Definition: h264.h:332
int chroma_pred_mode
Definition: h264.h:377
int crop
frame_cropping_flag
Definition: h264.h:193
int ff_h264_decode_init(AVCodecContext *avctx)
Definition: h264.c:628
int content_interpretation_type
Definition: h264.h:266
uint8_t * direct_table
Definition: h264.h:518
uint8_t scaling_matrix8[6][64]
Definition: h264.h:253
int nal_length_size
Number of bytes used for nal length (1, 2 or 4)
Definition: h264.h:565
useful rectangle filling function
CABACContext cabac
Cabac.
Definition: h264.h:505
void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type)
Definition: h264_direct.c:693
unsigned int left_samples_available
Definition: h264.h:399
int next_mb_skipped
Definition: h264.h:374
AVBufferRef * motion_val_buf[2]
Definition: h264.h:300
int sei_anticlockwise_rotation
Definition: h264.h:680
Context for storing H.264 DSP functions.
Definition: h264dsp.h:41
int ref_frame_count
num_ref_frames
Definition: h264.h:186
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:585
#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:223
FPA sei_fpa
Definition: h264.h:714
int x264_build
Definition: h264.h:534
uint32_t * mb2br_xy
Definition: h264.h:430
#define MB_TYPE_DIRECT2
Definition: avcodec.h:900
int needs_realloc
picture needs to be reallocated (eg due to a frame size change)
Definition: h264.h:325
ptrdiff_t linesize
Definition: h264.h:361
#define FFMIN(a, b)
Definition: common.h:81
uint16_t * slice_table
slice_table_base + 2*mb_stride + 1
Definition: h264.h:448
uint8_t field_scan8x8_cavlc[64]
Definition: h264.h:526
#define H264_MAX_THREADS
Definition: h264.h:47
float y
int poc_cycle_length
num_ref_frames_in_pic_order_cnt_cycle
Definition: h264.h:185
int colour_description_present_flag
Definition: h264.h:204
int reference
Definition: h264.h:326
AVRational sar
Definition: h264.h:201
int redundant_pic_count
Definition: h264.h:599
int sei_frame_packing_present
frame_packing_arrangment SEI message
Definition: h264.h:671
int mb_index_end
Definition: h264.h:539
int long_ref_count
number of actual long term references
Definition: h264.h:617
int cabac_init_idc
Definition: h264.h:620
uint32_t * mb_type
Definition: h264.h:304
int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src)
Definition: h264_picture.c:68
SPS sps
current sps
Definition: h264.h:437
PPS * pps_buffers[MAX_PPS_COUNT]
Definition: h264.h:571
uint8_t mvd_cache[2][5 *8][2]
Definition: h264.h:517
int sei_hflip
Definition: h264.h:681
#define MAX_SPS_COUNT
Definition: h264.h:49
uint8_t chroma_qp_table[2][QP_MAX_NUM+1]
pre-scaled (with chroma_qp_index_offset) version of qp_table
Definition: h264.h:254
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:475
H264Picture ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264.h:486
int init_qp
pic_init_qp_minus26 + 26
Definition: h264.h:245
int mmco_reset
Definition: h264.h:615
int direct_8x8_inference_flag
Definition: h264.h:192
int8_t intra4x4_pred_mode_cache[5 *8]
Definition: h264.h:393
uint8_t * bipred_scratchpad
Definition: h264.h:749
int n
Definition: avisynth_c.h:589
int poc_lsb
Definition: h264.h:578
int max_pic_num
max_frame_num or 2 * max_frame_num for field pics.
Definition: h264.h:597
int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice)
Definition: h264_refs.c:553
unsigned int topright_samples_available
Definition: h264.h:398
uint8_t scaling_matrix8[6][64]
Definition: h264.h:217
frame packing arrangement
Definition: h264.h:138
int curr_pic_num
frame_num for frames or 2 * frame_num + 1 for field pics.
Definition: h264.h:592
int slice_type
Definition: h264.h:449
int left_cbp
Definition: h264.h:512
int top_type
Definition: h264.h:386
static av_always_inline void write_back_non_zero_count(H264Context *h)
Definition: h264.h:1008
uint32_t dequant4_buffer[6][QP_MAX_NUM+1][16]
Definition: h264.h:442
ptrdiff_t mb_uvlinesize
Definition: h264.h:434
unsigned int list_count
Definition: h264.h:484
unsigned int sps_id
Definition: h264.h:174
int topright_mb_xy
Definition: h264.h:382
GetBitContext intra_gb
Definition: h264.h:492
int dequant_coeff_pps
reinit tables when pps changes
Definition: h264.h:573
int pic_order_present
pic_order_present_flag
Definition: h264.h:239
struct H264Context * thread_context[H264_MAX_THREADS]
Definition: h264.h:626
SPS * sps_buffers[MAX_SPS_COUNT]
Definition: h264.h:570
uint8_t zigzag_scan_q0[16]
Definition: h264.h:527
int chroma_log2_weight_denom
Definition: h264.h:466
int bit_depth_luma
luma bit depth from sps to detect changes
Definition: h264.h:567
short offset_for_ref_frame[256]
Definition: h264.h:212
int chroma_format_idc
chroma format from sps to detect changes
Definition: h264.h:568
VideoDSPContext vdsp
Definition: h264.h:342
int timing_info_present_flag
Definition: h264.h:208
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:585
int mb_stride
Definition: h264.h:542
int vcl_hrd_parameters_present_flag
Definition: h264.h:219
AVCodecContext * avctx
Definition: h264.h:341
uint8_t zigzag_scan8x8_q0[64]
Definition: h264.h:528
AVS_Value src
Definition: avisynth_c.h:524
#define MB_TYPE_8x16
Definition: avcodec.h:897
user data registered by ITU-T Recommendation T.35
Definition: h264.h:135
int slice_alpha_c0_offset
Definition: h264.h:550
1: top field
Definition: h264.h:147
void ff_h264_remove_all_refs(H264Context *h)
Definition: h264_refs.c:480
int prev_frame_num
frame_num of the last pic for POC type 1/2
Definition: h264.h:587
H264Picture * short_ref[32]
Definition: h264.h:602
int topleft_mb_xy
Definition: h264.h:380
int next_outputed_poc
Definition: h264.h:608
int ff_h264_decode_sei(H264Context *h)
Decode SEI.
Definition: h264_sei.c:282
int poc_msb
Definition: h264.h:579
int field_poc[2]
top/bottom POC
Definition: h264.h:312
int implicit_weight[48][48][2]
Definition: h264.h:470
int recovery_frame
recovery_frame is the frame_num at which the next frame should be fully constructed.
Definition: h264.h:722
int max_contexts
Max number of threads / contexts.
Definition: h264.h:639
main external API structure.
Definition: avcodec.h:1239
int dpb_output_delay_length
dpb_output_delay_length_minus1 + 1
Definition: h264.h:225
Definition: h264.h:274
int vui_parameters_present_flag
Definition: h264.h:200
2: bottom field
Definition: h264.h:148
#define QP_MAX_NUM
Definition: h264.h:108
int resync_mb_x
Definition: h264.h:537
int16_t mb[16 *48 *2]
as a dct coefficient is int32_t in high depth, we need to reserve twice the space.
Definition: h264.h:498
void * buf
Definition: avisynth_c.h:595
int frame_packing_arrangement_type
Definition: h264.h:672
int prev_mb_skipped
Definition: h264.h:373
int8_t * qscale_table
Definition: h264.h:298
int constraint_set_flags
constraint_set[0-3]_flag
Definition: h264.h:229
SEI_PicStructType sei_pic_struct
pic_struct in picture timing SEI message
Definition: h264.h:658
BYTE int const BYTE int int int height
Definition: avisynth_c.h:714
int ff_h264_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: h264_slice.c:457
static int get_avc_nalsize(H264Context *h, const uint8_t *buf, int buf_size, int *buf_index)
Definition: h264.h:1113
Describe the class of an AVClass context structure.
Definition: log.h:66
int slice_beta_offset
Definition: h264.h:551
uint32_t(*[6] dequant8_coeff)[64]
Definition: h264.h:445
int qp_thresh
QP threshold to skip loopfilter.
Definition: h264.h:357
rational number numerator/denominator
Definition: rational.h:43
int8_t * ref_index[2]
Definition: h264.h:310
#define MAX_MMCO_COUNT
Definition: h264.h:52
int pixel_shift
0 for 8-bit H264, 1 for high-bit-depth H264
Definition: h264.h:354
int mmco_reset
MMCO_RESET set this 1.
Definition: h264.h:315
int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb, int first_slice)
Definition: h264_refs.c:786
H264Picture * cur_pic_ptr
Definition: h264.h:350
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:500
AVPictureType
Definition: avutil.h:265
display orientation
Definition: h264.h:139
unsigned int sps_id
Definition: h264.h:237
int frame_packing_arrangement_cancel_flag
is previous arrangement canceled, -1 if never received
Definition: h264.h:263
int log2_max_poc_lsb
log2_max_pic_order_cnt_lsb_minus4
Definition: h264.h:181
6: bottom field, top field, bottom field repeated, in that order
Definition: h264.h:152
int sei_buffering_period_present
Buffering period SEI flag.
Definition: h264.h:745
int16_t slice_row[MAX_SLICES]
to detect when MAX_SLICES is too low
Definition: h264.h:751
int block_offset[2 *(16 *3)]
block_offset[ 0..23] for frame macroblocks block_offset[24..47] for field macroblocks ...
Definition: h264.h:427
int quincunx_sampling_flag
Definition: h264.h:267
uint32_t time_scale
Definition: h264.h:210
int transform_8x8_mode
transform_8x8_mode_flag
Definition: h264.h:251
static uint32_t state
Definition: trasher.c:27
H.264 / AVC / MPEG4 prediction functions.
int pic_struct_present_flag
Definition: h264.h:220
uint8_t zigzag_scan[16]
Definition: h264.h:521
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:134
Definition: vp9.h:48
#define AV_ZERO128(d)
Definition: intreadwrite.h:622
int has_recovery_point
Definition: h264.h:737
int mbaff
1 -> MBAFF frame 0-> not MBAFF
Definition: h264.h:322
A reference to a data buffer.
Definition: buffer.h:81
void ff_h264_flush_change(H264Context *h)
Definition: h264.c:1071
int ff_h264_decode_seq_parameter_set(H264Context *h, int ignore_truncation)
Decode SPS.
Definition: h264_ps.c:300
int is_complex
Definition: h264.h:546
AVBufferPool * qscale_table_pool
Definition: h264.h:759
H264Picture * next_output_pic
Definition: h264.h:606
int slice_context_count
Definition: h264.h:641
AVBufferPool * motion_val_pool
Definition: h264.h:761
int mb_height
pic_height_in_map_units_minus1 + 1
Definition: h264.h:189
uint8_t * rbsp_buffer[2]
Definition: h264.h:558
int init_qs
pic_init_qs_minus26 + 26
Definition: h264.h:246
int qscale
Definition: h264.h:364
int pic_id
pic_num (short -> no wrap version of pic_num, pic_num & max_pic_num; long -> long_pic_num) ...
Definition: h264.h:317
int dist_scale_factor_field[2][32]
Definition: h264.h:476
#define tprintf(p,...)
Definition: get_bits.h:692
common internal api header.
#define AV_COPY128(d, s)
Definition: intreadwrite.h:594
int nal_hrd_parameters_present_flag
Definition: h264.h:218
const uint8_t * intra_pcm_ptr
Definition: h264.h:497
ptrdiff_t mb_linesize
may be equal to s->linesize or s->linesize * 2, for mbaff
Definition: h264.h:433
int ff_h264_field_end(H264Context *h, int in_setup)
Definition: h264_picture.c:155
uint16_t * slice_table_base
Definition: h264.h:575
int log2_max_frame_num
log2_max_frame_num_minus4 + 4
Definition: h264.h:179
int missing_fields
Definition: h264.h:739
#define MB_TYPE_8x8
Definition: avcodec.h:898
Bi-dir predicted.
Definition: avutil.h:269
const char * ff_h264_sei_stereo_mode(H264Context *h)
Get stereo_mode string from the h264 frame_packing_arrangement.
Definition: h264_sei.c:359
Definition: h264.h:119
int cur_chroma_format_idc
Definition: h264.h:748
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:233
int long_arg
index, pic_num, or num long refs depending on opcode
Definition: h264.h:289
int sei_ct_type
Bit set of clock types for fields/frames in picture timing SEI message.
Definition: h264.h:688
int chroma_qp[2]
Definition: h264.h:355
#define MB_TYPE_16x8
Definition: avcodec.h:896
uint16_t sub_mb_type[4]
Definition: h264.h:460
Core video DSP helper functions.
int bit_depth_luma
bit_depth_luma_minus8 + 8
Definition: h264.h:226
static av_always_inline void write_back_intra_pred_mode(H264Context *h)
Definition: h264.h:997
int intra16x16_pred_mode
Definition: h264.h:378
int prev_poc_lsb
poc_lsb of the last reference pic for POC type 0
Definition: h264.h:584
void ff_h264_set_erpic(ERPicture *dst, H264Picture *src)
Definition: h264_picture.c:132
uint8_t zigzag_scan8x8_cavlc_q0[64]
Definition: h264.h:529
int col_fieldoff
Definition: h264.h:474
#define IS_8X8(a)
Definition: mpegutils.h:85
uint8_t non_zero_count_cache[15 *8]
non zero coeff count cache.
Definition: h264.h:406
uint8_t(*[2] top_borders)[(16 *3)*2]
Definition: h264.h:400
Frame Packing Arrangement Type.
Definition: h264.h:261
H264Picture cur_pic
Definition: h264.h:351
int sei_display_orientation_present
display orientation SEI message
Definition: h264.h:679
int content_interpretation_type
Definition: h264.h:673
int mb_width
Definition: h264.h:541
enum AVPictureType pict_type
Definition: h264.h:649
int current_slice
current slice number, used to initialize slice_num of each thread/context
Definition: h264.h:631
buffering period (H.264, D.1.1)
Definition: h264.h:133
int mb_width
pic_width_in_mbs_minus1 + 1
Definition: h264.h:188
int slice_group_count
num_slice_groups_minus1 + 1
Definition: h264.h:240
uint32_t * mb2b_xy
Definition: h264.h:429
uint8_t field_scan8x8_cavlc_q0[64]
Definition: h264.h:532
int cpb_cnt
See H.264 E.1.2.
Definition: h264.h:222
int slice_type_fixed
Definition: h264.h:451
AVBufferRef * ref_index_buf[2]
Definition: h264.h:309
int delta_poc_bottom
Definition: h264.h:580
H264Picture last_pic_for_ec
Definition: h264.h:352
int au_pps_id
pps_id of current access unit
Definition: h264.h:440
Definition: h264.h:117
int ff_h264_fill_default_ref_list(H264Context *h)
Fill the default_ref_list.
Definition: h264_refs.c:115
H264DSPContext h264dsp
Definition: h264.h:343
int ff_h264_get_profile(SPS *sps)
compute profile from sps
Definition: h264.c:1205
int crop_top
Definition: h264.h:333
int ref_count[2][2]
number of entries in ref_poc (FIXME need per slice)
Definition: h264.h:321
uint8_t field_scan8x8[64]
Definition: h264.h:525
#define av_always_inline
Definition: attributes.h:37
int chroma_weight_flag[2]
7.4.3.2 chroma_weight_lX_flag
Definition: h264.h:742
Definition: h264.h:118
int8_t * intra4x4_pred_mode
Definition: h264.h:394
int cpb_removal_delay_length
cpb_removal_delay_length_minus1 + 1
Definition: h264.h:224
8: frame tripling
Definition: h264.h:154
int deblocking_filter
disable_deblocking_filter_idc with 1 <-> 0
Definition: h264.h:549
#define AV_RN64A(p)
Definition: intreadwrite.h:530
uint8_t field_scan_q0[16]
Definition: h264.h:530
int map_col_to_list0_field[2][2][16+32]
Definition: h264.h:478
#define LIST_NOT_USED
Definition: h264.h:415
uint8_t(* non_zero_count)[48]
Definition: h264.h:408
unsigned int crop_bottom
frame_cropping_rect_bottom_offset
Definition: h264.h:199
float min
int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma)
Check if the top & left blocks are available if needed & change the dc mode so it only uses the avail...
Definition: h264.c:192
int slice_num
Definition: h264.h:447
AVClass * av_class
Definition: h264.h:340
int sei_recovery_frame_cnt
recovery_frame_cnt from SEI message
Definition: h264.h:707
int droppable
Definition: h264.h:365
int level_idc
Definition: h264.h:176
int nal_ref_idc
Definition: h264.h:556
uint8_t field_scan[16]
Definition: h264.h:524
int ff_set_ref_count(H264Context *h)
Definition: h264.c:1272
void ff_h264_hl_decode_mb(H264Context *h)
Definition: h264_mb.c:809
void ff_h264_draw_horiz_band(H264Context *h, int y, int height)
Definition: h264.c:97
int b_stride
Definition: h264.h:431
int sei_dpb_output_delay
dpb_output_delay in picture timing SEI message, see H.264 C.2.2
Definition: h264.h:693
unsigned int rbsp_buffer_size[2]
Definition: h264.h:559
recovery point (frame # to decoder sync)
Definition: h264.h:137
Context Adaptive Binary Arithmetic Coder.
int neighbor_transform_size
number of neighbors (top and/or left) that used 8x8 dct
Definition: h264.h:421
int8_t ref_cache[2][5 *8]
Definition: h264.h:414
int mb_mbaff
mb_aff_frame && mb_field_decoding_flag
Definition: h264.h:456
int short_ref_count
number of actual short term references
Definition: h264.h:618
void ff_h264_init_dequant_tables(H264Context *h)
Definition: h264_slice.c:365
int mb_slice_group_map_type
Definition: h264.h:241
enum AVColorSpace colorspace
Definition: h264.h:207