er: move relevant fields from Picture to ERPicture
[libav.git] / libavcodec / h264.h
CommitLineData
26b4fe82
AJ
1/*
2 * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4 *
2912e87a 5 * This file is part of Libav.
26b4fe82 6 *
2912e87a 7 * Libav is free software; you can redistribute it and/or
26b4fe82
AJ
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 *
2912e87a 12 * Libav is distributed in the hope that it will be useful,
26b4fe82
AJ
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
2912e87a 18 * License along with Libav; if not, write to the Free Software
26b4fe82 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26b4fe82
AJ
20 */
21
22/**
ba87f080 23 * @file
26b4fe82
AJ
24 * H.264 / AVC / MPEG4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
26 */
27
98790382
SS
28#ifndef AVCODEC_H264_H
29#define AVCODEC_H264_H
26b4fe82 30
19769ece 31#include "libavutil/intreadwrite.h"
26b4fe82 32#include "cabac.h"
5f401b7b 33#include "error_resilience.h"
2c541554 34#include "get_bits.h"
26b4fe82 35#include "mpegvideo.h"
79dad2a9 36#include "h264chroma.h"
4693b031 37#include "h264dsp.h"
c92a30bb 38#include "h264pred.h"
e9d81735 39#include "h264qpel.h"
e1e94902 40#include "rectangle.h"
26b4fe82 41
be545b8a
DB
42#define MAX_SPS_COUNT 32
43#define MAX_PPS_COUNT 256
26b4fe82 44
be545b8a 45#define MAX_MMCO_COUNT 66
26b4fe82 46
be545b8a 47#define MAX_DELAYED_PIC_COUNT 16
64b9d48f 48
26b4fe82
AJ
49/* Compiling in interlaced support reduces the speed
50 * of progressive decoding by about 2%. */
51#define ALLOW_INTERLACE
52
d43c1922
MN
53#define FMO 0
54
b735aeea
MN
55/**
56 * The maximum number of slices supported by the decoder.
57 * must be a power of 2
58 */
59#define MAX_SLICES 16
60
26b4fe82 61#ifdef ALLOW_INTERLACE
82313eaa 62#define MB_MBAFF(h) h->mb_mbaff
da6be8fc 63#define MB_FIELD(h) h->mb_field_decoding_flag
7bece9b2 64#define FRAME_MBAFF(h) h->mb_aff_frame
7fa00653 65#define FIELD_PICTURE(h) (h->picture_structure != PICT_FRAME)
556f8a06 66#define LEFT_MBS 2
be545b8a
DB
67#define LTOP 0
68#define LBOT 1
69#define LEFT(i) (i)
26b4fe82 70#else
82313eaa 71#define MB_MBAFF(h) 0
da6be8fc 72#define MB_FIELD(h) 0
7bece9b2 73#define FRAME_MBAFF(h) 0
7fa00653 74#define FIELD_PICTURE(h) 0
26b4fe82
AJ
75#undef IS_INTERLACED
76#define IS_INTERLACED(mb_type) 0
556f8a06 77#define LEFT_MBS 1
be545b8a
DB
78#define LTOP 0
79#define LBOT 0
80#define LEFT(i) 0
26b4fe82 81#endif
a6931d8e 82#define FIELD_OR_MBAFF_PICTURE(h) (FRAME_MBAFF(h) || FIELD_PICTURE(h))
26b4fe82 83
ddd60f28 84#ifndef CABAC
6d2b6f21 85#define CABAC(h) h->pps.cabac
ddd60f28
MN
86#endif
87
e962bd08 88#define CHROMA422(h) (h->sps.chroma_format_idc == 2)
23e85be5 89#define CHROMA444(h) (h->sps.chroma_format_idc == 3)
c90b9442 90
be545b8a 91#define EXTENDED_SAR 255
44ee6135 92
be545b8a 93#define MB_TYPE_REF0 MB_TYPE_ACPRED // dirty but it fits in 16 bit
ce9ff9cc
DB
94#define MB_TYPE_8x8DCT 0x01000000
95#define IS_REF0(a) ((a) & MB_TYPE_REF0)
96#define IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT)
97
be545b8a 98#define QP_MAX_NUM (51 + 2 * 6) // The maximum supported qp
ea6f00c4 99
44ee6135
MN
100/* NAL unit types */
101enum {
b141c7b3
VG
102 NAL_SLICE = 1,
103 NAL_DPA = 2,
104 NAL_DPB = 3,
105 NAL_DPC = 4,
106 NAL_IDR_SLICE = 5,
107 NAL_SEI = 6,
108 NAL_SPS = 7,
109 NAL_PPS = 8,
110 NAL_AUD = 9,
111 NAL_END_SEQUENCE = 10,
112 NAL_END_STREAM = 11,
113 NAL_FILLER_DATA = 12,
114 NAL_SPS_EXT = 13,
61c6eef5
JG
115 NAL_AUXILIARY_SLICE = 19,
116 NAL_FF_IGNORE = 0xff0f001,
44ee6135
MN
117};
118
26b4fe82 119/**
dd02ea11
IS
120 * SEI message types
121 */
122typedef enum {
304e916a 123 SEI_TYPE_BUFFERING_PERIOD = 0, ///< buffering period (H.264, D.1.1)
be545b8a
DB
124 SEI_TYPE_PIC_TIMING = 1, ///< picture timing
125 SEI_TYPE_USER_DATA_UNREGISTERED = 5, ///< unregistered user data
5b10ef72
VG
126 SEI_TYPE_RECOVERY_POINT = 6, ///< recovery point (frame # to decoder sync)
127 SEI_TYPE_FRAME_PACKING = 45, ///< frame packing arrangement
dd02ea11
IS
128} SEI_Type;
129
130/**
b09a7c05
131 * pic_struct in picture timing SEI message
132 */
133typedef enum {
134 SEI_PIC_STRUCT_FRAME = 0, ///< 0: %frame
135 SEI_PIC_STRUCT_TOP_FIELD = 1, ///< 1: top field
136 SEI_PIC_STRUCT_BOTTOM_FIELD = 2, ///< 2: bottom field
137 SEI_PIC_STRUCT_TOP_BOTTOM = 3, ///< 3: top field, bottom field, in that order
138 SEI_PIC_STRUCT_BOTTOM_TOP = 4, ///< 4: bottom field, top field, in that order
139 SEI_PIC_STRUCT_TOP_BOTTOM_TOP = 5, ///< 5: top field, bottom field, top field repeated, in that order
140 SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM = 6, ///< 6: bottom field, top field, bottom field repeated, in that order
141 SEI_PIC_STRUCT_FRAME_DOUBLING = 7, ///< 7: %frame doubling
142 SEI_PIC_STRUCT_FRAME_TRIPLING = 8 ///< 8: %frame tripling
143} SEI_PicStructType;
144
145/**
26b4fe82
AJ
146 * Sequence parameter set
147 */
be545b8a 148typedef struct SPS {
3a057670 149 unsigned int sps_id;
26b4fe82
AJ
150 int profile_idc;
151 int level_idc;
0af6967e 152 int chroma_format_idc;
26b4fe82
AJ
153 int transform_bypass; ///< qpprime_y_zero_transform_bypass_flag
154 int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4
155 int poc_type; ///< pic_order_cnt_type
156 int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4
157 int delta_pic_order_always_zero_flag;
158 int offset_for_non_ref_pic;
159 int offset_for_top_to_bottom_field;
160 int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle
161 int ref_frame_count; ///< num_ref_frames
162 int gaps_in_frame_num_allowed_flag;
bcc3476c
JD
163 int mb_width; ///< pic_width_in_mbs_minus1 + 1
164 int mb_height; ///< pic_height_in_map_units_minus1 + 1
26b4fe82 165 int frame_mbs_only_flag;
be545b8a 166 int mb_aff; ///< mb_adaptive_frame_field_flag
26b4fe82 167 int direct_8x8_inference_flag;
be545b8a 168 int crop; ///< frame_cropping_flag
5e83d9ac
AK
169
170 /* those 4 are already in luma samples */
59eeddf0
MN
171 unsigned int crop_left; ///< frame_cropping_rect_left_offset
172 unsigned int crop_right; ///< frame_cropping_rect_right_offset
173 unsigned int crop_top; ///< frame_cropping_rect_top_offset
174 unsigned int crop_bottom; ///< frame_cropping_rect_bottom_offset
26b4fe82
AJ
175 int vui_parameters_present_flag;
176 AVRational sar;
c4dffe7e
DC
177 int video_signal_type_present_flag;
178 int full_range;
179 int colour_description_present_flag;
180 enum AVColorPrimaries color_primaries;
181 enum AVColorTransferCharacteristic color_trc;
182 enum AVColorSpace colorspace;
26b4fe82
AJ
183 int timing_info_present_flag;
184 uint32_t num_units_in_tick;
185 uint32_t time_scale;
186 int fixed_frame_rate_flag;
be545b8a 187 short offset_for_ref_frame[256]; // FIXME dyn aloc?
26b4fe82
AJ
188 int bitstream_restriction_flag;
189 int num_reorder_frames;
190 int scaling_matrix_present;
191 uint8_t scaling_matrix4[6][16];
c90b9442 192 uint8_t scaling_matrix8[6][64];
b09a7c05
193 int nal_hrd_parameters_present_flag;
194 int vcl_hrd_parameters_present_flag;
195 int pic_struct_present_flag;
196 int time_offset_length;
be545b8a
DB
197 int cpb_cnt; ///< See H.264 E.1.2
198 int initial_cpb_removal_delay_length; ///< initial_cpb_removal_delay_length_minus1 + 1
199 int cpb_removal_delay_length; ///< cpb_removal_delay_length_minus1 + 1
200 int dpb_output_delay_length; ///< dpb_output_delay_length_minus1 + 1
201 int bit_depth_luma; ///< bit_depth_luma_minus8 + 8
202 int bit_depth_chroma; ///< bit_depth_chroma_minus8 + 8
203 int residual_color_transform_flag; ///< residual_colour_transform_flag
204 int constraint_set_flags; ///< constraint_set[0-3]_flag
072be3e8 205 int new; ///< flag to keep track if the decoder context needs re-init due to changed SPS
be545b8a 206} SPS;
26b4fe82
AJ
207
208/**
209 * Picture parameter set
210 */
be545b8a 211typedef struct PPS {
26b4fe82
AJ
212 unsigned int sps_id;
213 int cabac; ///< entropy_coding_mode_flag
214 int pic_order_present; ///< pic_order_present_flag
215 int slice_group_count; ///< num_slice_groups_minus1 + 1
216 int mb_slice_group_map_type;
217 unsigned int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1
218 int weighted_pred; ///< weighted_pred_flag
219 int weighted_bipred_idc;
220 int init_qp; ///< pic_init_qp_minus26 + 26
221 int init_qs; ///< pic_init_qs_minus26 + 26
4691a77d 222 int chroma_qp_index_offset[2];
26b4fe82 223 int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag
be545b8a
DB
224 int constrained_intra_pred; ///< constrained_intra_pred_flag
225 int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag
226 int transform_8x8_mode; ///< transform_8x8_mode_flag
26b4fe82 227 uint8_t scaling_matrix4[6][16];
c90b9442 228 uint8_t scaling_matrix8[6][64];
be545b8a 229 uint8_t chroma_qp_table[2][64]; ///< pre-scaled (with chroma_qp_index_offset) version of qp_table
4691a77d 230 int chroma_qp_diff;
be545b8a 231} PPS;
26b4fe82
AJ
232
233/**
234 * Memory management control operation opcode.
235 */
be545b8a
DB
236typedef enum MMCOOpcode {
237 MMCO_END = 0,
26b4fe82
AJ
238 MMCO_SHORT2UNUSED,
239 MMCO_LONG2UNUSED,
240 MMCO_SHORT2LONG,
241 MMCO_SET_MAX_LONG,
242 MMCO_RESET,
243 MMCO_LONG,
244} MMCOOpcode;
245
246/**
247 * Memory management control operation.
248 */
be545b8a 249typedef struct MMCO {
26b4fe82 250 MMCOOpcode opcode;
0d0447ea
JD
251 int short_pic_num; ///< pic_num without wrapping (pic_num & max_pic_num)
252 int long_arg; ///< index, pic_num, or num long refs depending on opcode
26b4fe82
AJ
253} MMCO;
254
255/**
256 * H264Context
257 */
be545b8a 258typedef struct H264Context {
2c541554
AK
259 AVCodecContext *avctx;
260 DSPContext dsp;
261 VideoDSPContext vdsp;
4693b031 262 H264DSPContext h264dsp;
79dad2a9 263 H264ChromaContext h264chroma;
e9d81735 264 H264QpelContext h264qpel;
2c541554
AK
265 MotionEstContext me;
266 ParseContext parse_context;
267 GetBitContext gb;
268 ERContext er;
269
270 Picture *DPB;
271 Picture *cur_pic_ptr;
272 Picture cur_pic;
2c541554 273
6e3ef511 274 int pixel_shift; ///< 0 for 8-bit H264, 1 for high-bit-depth H264
be545b8a 275 int chroma_qp[2]; // QPc
26b4fe82 276
2e36c931
MN
277 int qp_thresh; ///< QP threshold to skip loopfilter
278
5e83d9ac 279 /* coded dimensions -- 16 * mb w/h */
2c541554 280 int width, height;
93f30547 281 ptrdiff_t linesize, uvlinesize;
2c541554
AK
282 int chroma_x_shift, chroma_y_shift;
283
284 int qscale;
285 int droppable;
286 int data_partitioning;
287 int coded_picture_number;
288 int low_delay;
289
290 int context_initialized;
291 int flags;
292 int workaround_bugs;
293
26b4fe82
AJ
294 int prev_mb_skipped;
295 int next_mb_skipped;
296
be545b8a 297 // prediction stuff
26b4fe82
AJ
298 int chroma_pred_mode;
299 int intra16x16_pred_mode;
300
c1bb66ac 301 int topleft_mb_xy;
26b4fe82 302 int top_mb_xy;
c1bb66ac 303 int topright_mb_xy;
556f8a06 304 int left_mb_xy[LEFT_MBS];
26b4fe82 305
c1bb66ac 306 int topleft_type;
99344d43 307 int top_type;
c1bb66ac 308 int topright_type;
556f8a06 309 int left_type[LEFT_MBS];
99344d43 310
be545b8a 311 const uint8_t *left_block;
c1bb66ac
MN
312 int topleft_partition;
313
be545b8a
DB
314 int8_t intra4x4_pred_mode_cache[5 * 8];
315 int8_t(*intra4x4_pred_mode);
c92a30bb 316 H264PredContext hpc;
26b4fe82
AJ
317 unsigned int topleft_samples_available;
318 unsigned int top_samples_available;
319 unsigned int topright_samples_available;
320 unsigned int left_samples_available;
be545b8a 321 uint8_t (*top_borders[2])[(16 * 3) * 2];
26b4fe82
AJ
322
323 /**
324 * non zero coeff count cache.
325 * is 64 if not available.
326 */
be545b8a 327 DECLARE_ALIGNED(8, uint8_t, non_zero_count_cache)[15 * 8];
b6303e6d 328
c90b9442 329 uint8_t (*non_zero_count)[48];
26b4fe82
AJ
330
331 /**
332 * Motion vector cache.
333 */
be545b8a
DB
334 DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2];
335 DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8];
336#define LIST_NOT_USED -1 // FIXME rename?
26b4fe82
AJ
337#define PART_NOT_AVAILABLE -2
338
339 /**
26b4fe82
AJ
340 * number of neighbors (top and/or left) that used 8x8 dct
341 */
342 int neighbor_transform_size;
343
344 /**
345 * block_offset[ 0..23] for frame macroblocks
346 * block_offset[24..47] for field macroblocks
347 */
be545b8a 348 int block_offset[2 * (16 * 3)];
26b4fe82 349
be545b8a 350 uint32_t *mb2b_xy; // FIXME are these 4 a good idea?
d43c1922 351 uint32_t *mb2br_xy;
be545b8a 352 int b_stride; // FIXME use s->b4_stride
26b4fe82 353
93f30547
RB
354 ptrdiff_t mb_linesize; ///< may be equal to s->linesize or s->linesize * 2, for mbaff
355 ptrdiff_t mb_uvlinesize;
26b4fe82 356
26b4fe82 357 SPS sps; ///< current sps
15210354 358 PPS pps; ///< current pps
26b4fe82 359
be545b8a
DB
360 uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; // FIXME should these be moved down?
361 uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64];
362 uint32_t(*dequant4_coeff[6])[16];
363 uint32_t(*dequant8_coeff[6])[64];
26b4fe82
AJ
364
365 int slice_num;
be545b8a 366 uint16_t *slice_table; ///< slice_table_base + 2*mb_stride + 1
26b4fe82 367 int slice_type;
be545b8a 368 int slice_type_nos; ///< S free slice type (SI/SP are remapped to I/P)
26b4fe82
AJ
369 int slice_type_fixed;
370
be545b8a 371 // interlacing specific flags
26b4fe82
AJ
372 int mb_aff_frame;
373 int mb_field_decoding_flag;
be545b8a 374 int mb_mbaff; ///< mb_aff_frame && mb_field_decoding_flag
2c541554
AK
375 int picture_structure;
376 int first_field;
26b4fe82 377
84dc2d8a 378 DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4];
26b4fe82 379
be545b8a 380 // Weighted pred stuff
26b4fe82
AJ
381 int use_weight;
382 int use_weight_chroma;
383 int luma_log2_weight_denom;
384 int chroma_log2_weight_denom;
be545b8a 385 // The following 2 can be changed to int8_t but that causes 10cpu cycles speedloss
3d9137c8
MN
386 int luma_weight[48][2][2];
387 int chroma_weight[48][2][2][2];
1052b76f 388 int implicit_weight[48][48][2];
26b4fe82 389
26b4fe82 390 int direct_spatial_mv_pred;
3a06e864
MN
391 int col_parity;
392 int col_fieldoff;
73ad2c2f 393 int dist_scale_factor[32];
8b1fd554 394 int dist_scale_factor_field[2][32];
be545b8a
DB
395 int map_col_to_list0[2][16 + 32];
396 int map_col_to_list0_field[2][2][16 + 32];
26b4fe82
AJ
397
398 /**
399 * num_ref_idx_l0/1_active_minus1 + 1
400 */
be545b8a 401 unsigned int ref_count[2]; ///< counts frames or fields, depending on current mb mode
26b4fe82 402 unsigned int list_count;
be545b8a
DB
403 uint8_t *list_counts; ///< Array of list_count per MB specifying the slice type
404 Picture ref_list[2][48]; /**< 0..15: frame refs, 16..47: mbaff field refs.
405 * Reordered version of default_ref_list
406 * according to picture reordering in slice header */
407 int ref2frm[MAX_SLICES][2][64]; ///< reference to frame number lists, used in the loop filter, the first 2 are for -2,-1
26b4fe82 408
be545b8a 409 // data partitioning
26b4fe82
AJ
410 GetBitContext intra_gb;
411 GetBitContext inter_gb;
412 GetBitContext *intra_gb_ptr;
413 GetBitContext *inter_gb_ptr;
414
7ebfb466 415 const uint8_t *intra_pcm_ptr;
88bd7fdc
DB
416 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.
417 DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2];
418 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
26b4fe82
AJ
419
420 /**
421 * Cabac
422 */
423 CABACContext cabac;
be545b8a 424 uint8_t cabac_state[1024];
26b4fe82 425
be545b8a
DB
426 /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0, 1, 2), 0x0? luma_cbp */
427 uint16_t *cbp_table;
26b4fe82
AJ
428 int cbp;
429 int top_cbp;
430 int left_cbp;
431 /* chroma_pred_mode for i4x4 or i16x16, else 0 */
be545b8a
DB
432 uint8_t *chroma_pred_mode_table;
433 int last_qscale_diff;
434 uint8_t (*mvd_table[2])[2];
435 DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5 * 8][2];
436 uint8_t *direct_table;
437 uint8_t direct_cache[5 * 8];
26b4fe82
AJ
438
439 uint8_t zigzag_scan[16];
440 uint8_t zigzag_scan8x8[64];
441 uint8_t zigzag_scan8x8_cavlc[64];
442 uint8_t field_scan[16];
443 uint8_t field_scan8x8[64];
444 uint8_t field_scan8x8_cavlc[64];
445 const uint8_t *zigzag_scan_q0;
446 const uint8_t *zigzag_scan8x8_q0;
447 const uint8_t *zigzag_scan8x8_cavlc_q0;
448 const uint8_t *field_scan_q0;
449 const uint8_t *field_scan8x8_q0;
450 const uint8_t *field_scan8x8_cavlc_q0;
451
452 int x264_build;
afebe2f7 453
2c541554
AK
454 int mb_x, mb_y;
455 int resync_mb_x;
456 int resync_mb_y;
457 int mb_skip_run;
458 int mb_height, mb_width;
459 int mb_stride;
460 int mb_num;
bd8868e0
MN
461 int mb_xy;
462
463 int is_complex;
464
be545b8a
DB
465 // deblock
466 int deblocking_filter; ///< disable_deblocking_filter_idc with 1 <-> 0
bd8868e0
MN
467 int slice_alpha_c0_offset;
468 int slice_beta_offset;
469
be545b8a
DB
470 // =============================================================
471 // Things below are not used in the MB or more inner code
bd8868e0
MN
472
473 int nal_ref_idc;
474 int nal_unit_type;
475 uint8_t *rbsp_buffer[2];
476 unsigned int rbsp_buffer_size[2];
477
478 /**
479 * Used to parse AVC variant of h264
480 */
be545b8a
DB
481 int is_avc; ///< this flag is != 0 if codec is avc1
482 int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4)
483 int got_first; ///< this flag is != 0 if we've parsed a frame
bd8868e0 484
2c541554
AK
485 int bit_depth_luma; ///< luma bit depth from sps to detect changes
486 int chroma_format_idc; ///< chroma format from sps to detect changes
9e696d2e 487
bd8868e0
MN
488 SPS *sps_buffers[MAX_SPS_COUNT];
489 PPS *pps_buffers[MAX_PPS_COUNT];
490
be545b8a 491 int dequant_coeff_pps; ///< reinit tables when pps changes
bd8868e0
MN
492
493 uint16_t *slice_table_base;
494
be545b8a 495 // POC stuff
bd8868e0
MN
496 int poc_lsb;
497 int poc_msb;
498 int delta_poc_bottom;
499 int delta_poc[2];
500 int frame_num;
be545b8a
DB
501 int prev_poc_msb; ///< poc_msb of the last reference pic for POC type 0
502 int prev_poc_lsb; ///< poc_lsb of the last reference pic for POC type 0
503 int frame_num_offset; ///< for POC type 2
504 int prev_frame_num_offset; ///< for POC type 2
505 int prev_frame_num; ///< frame_num of the last pic for POC type 1/2
bd8868e0
MN
506
507 /**
be545b8a 508 * frame_num for frames or 2 * frame_num + 1 for field pics.
bd8868e0
MN
509 */
510 int curr_pic_num;
511
512 /**
be545b8a 513 * max_frame_num or 2 * max_frame_num for field pics.
bd8868e0
MN
514 */
515 int max_pic_num;
516
517 int redundant_pic_count;
518
940b8b58 519 Picture default_ref_list[2][32]; ///< base reference list for all slices of a coded picture
bd8868e0
MN
520 Picture *short_ref[32];
521 Picture *long_ref[32];
be545b8a 522 Picture *delayed_pic[MAX_DELAYED_PIC_COUNT + 2]; // FIXME size?
ea2bb12e 523 int last_pocs[MAX_DELAYED_PIC_COUNT];
6a9c8594 524 Picture *next_output_pic;
bd8868e0 525 int outputed_poc;
6a9c8594 526 int next_outputed_poc;
bd8868e0
MN
527
528 /**
529 * memory management control operations buffer.
530 */
531 MMCO mmco[MAX_MMCO_COUNT];
532 int mmco_index;
adedd840 533 int mmco_reset;
bd8868e0 534
be545b8a
DB
535 int long_ref_count; ///< number of actual long term references
536 int short_ref_count; ///< number of actual short term references
bd8868e0 537
be545b8a 538 int cabac_init_idc;
bd8868e0 539
afebe2f7 540 /**
21a19b79 541 * @name Members for slice based multithreading
afebe2f7
542 * @{
543 */
544 struct H264Context *thread_context[MAX_THREADS];
545
546 /**
547 * current slice number, used to initalize slice_num of each thread/context
548 */
549 int current_slice;
550
551 /**
552 * Max number of threads / contexts.
553 * This is equal to AVCodecContext.thread_count unless
554 * multithreaded decoding is impossible, in which case it is
555 * reduced to 1.
556 */
557 int max_contexts;
558
2c541554
AK
559 int slice_context_count;
560
afebe2f7
561 /**
562 * 1 if the single thread fallback warning has already been
563 * displayed, 0 otherwise.
564 */
565 int single_decode_warning;
566
2c541554
AK
567 enum AVPictureType pict_type;
568
afebe2f7
569 int last_slice_type;
570 /** @} */
571
b09a7c05
572 /**
573 * pic_struct in picture timing SEI message
574 */
575 SEI_PicStructType sei_pic_struct;
89db0bae 576
37a558fe 577 /**
b19d493f
HY
578 * Complement sei_pic_struct
579 * SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced frames.
580 * However, soft telecined frames may have these values.
581 * This is used in an attempt to flag soft telecine progressive.
582 */
583 int prev_interlaced_frame;
584
585 /**
5b10ef72
VG
586 * frame_packing_arrangment SEI message
587 */
588 int sei_frame_packing_present;
589 int frame_packing_arrangement_type;
590 int content_interpretation_type;
591 int quincunx_subsampling;
592
593 /**
70e01da3
IS
594 * Bit set of clock types for fields/frames in picture timing SEI message.
595 * For each found ct_type, appropriate bit is set (e.g., bit 1 for
596 * interlaced).
597 */
598 int sei_ct_type;
599
600 /**
ff594f81
IS
601 * dpb_output_delay in picture timing SEI message, see H.264 C.2.2
602 */
603 int sei_dpb_output_delay;
604
605 /**
cf6065ca
IS
606 * cpb_removal_delay in picture timing SEI message, see H.264 C.1.2
607 */
608 int sei_cpb_removal_delay;
609
610 /**
37a558fe
IS
611 * recovery_frame_cnt from SEI message
612 *
613 * Set to -1 if no recovery point SEI message found or to number of frames
614 * before playback synchronizes. Frames having recovery point are key
615 * frames.
616 */
617 int sei_recovery_frame_cnt;
618
28096e0a
JS
619 /**
620 * recovery_frame is the frame_num at which the next frame should
621 * be fully constructed.
622 *
623 * Set to -1 when not expecting a recovery point.
624 */
625 int recovery_frame;
626
627/**
628 * We have seen an IDR, so all the following frames in coded order are correctly
629 * decodable.
630 */
631#define FRAME_RECOVERED_IDR (1 << 0)
632/**
633 * Sufficient number of frames have been decoded since a SEI recovery point,
634 * so all the following frames in presentation order are correct.
635 */
636#define FRAME_RECOVERED_SEI (1 << 1)
637
638 int frame_recovered; ///< Initial frame has been completely recovered
639
be545b8a
DB
640 int luma_weight_flag[2]; ///< 7.4.3.2 luma_weight_lX_flag
641 int chroma_weight_flag[2]; ///< 7.4.3.2 chroma_weight_lX_flag
2ea89d92
IS
642
643 // Timestamp stuff
be545b8a
DB
644 int sei_buffering_period_present; ///< Buffering period SEI flag
645 int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs
76741b0e
BC
646
647 int cur_chroma_format_idc;
a394959b 648 uint8_t *bipred_scratchpad;
2c541554
AK
649 uint8_t *edge_emu_buffer;
650 int16_t *dc_val_base;
759001c5
AK
651
652 AVBufferPool *qscale_table_pool;
653 AVBufferPool *mb_type_pool;
654 AVBufferPool *motion_val_pool;
655 AVBufferPool *ref_index_pool;
be545b8a 656} H264Context;
26b4fe82 657
be545b8a 658extern const uint8_t ff_h264_chroma_qp[3][QP_MAX_NUM + 1]; ///< One chroma qp table for each supported bit depth (8, 9, 10).
0becb078 659extern const uint16_t ff_h264_mb_sizes[4];
889fce8e 660
1790a5e9
IS
661/**
662 * Decode SEI
663 */
664int ff_h264_decode_sei(H264Context *h);
665
666/**
667 * Decode SPS
668 */
669int ff_h264_decode_seq_parameter_set(H264Context *h);
670
671/**
fe9a3fbe
JG
672 * compute profile from sps
673 */
674int ff_h264_get_profile(SPS *sps);
675
676/**
1790a5e9
IS
677 * Decode PPS
678 */
679int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length);
680
681/**
49bd8e4b 682 * Decode a network abstraction layer unit.
1790a5e9
IS
683 * @param consumed is the number of bytes used as input
684 * @param length is the length of the array
be545b8a
DB
685 * @param dst_length is the number of decoded bytes FIXME here
686 * or a decode rbsp tailing?
32e543f8 687 * @return decoded bytes, might be src+1 if no escapes
1790a5e9 688 */
be545b8a
DB
689const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src,
690 int *dst_length, int *consumed, int length);
1790a5e9
IS
691
692/**
be545b8a
DB
693 * Free any data that may have been allocated in the H264 context
694 * like SPS, PPS etc.
15861962 695 */
94ee7da0 696void ff_h264_free_context(H264Context *h);
15861962 697
75dd6938 698/**
49bd8e4b 699 * Reconstruct bitstream slice_type.
75dd6938 700 */
0dc343d4 701int ff_h264_get_slice_type(const H264Context *h);
75dd6938 702
903d58f6 703/**
49bd8e4b 704 * Allocate tables.
903d58f6
MN
705 * needs width/height
706 */
707int ff_h264_alloc_tables(H264Context *h);
708
709/**
49bd8e4b 710 * Fill the default_ref_list.
ea6f00c4
MN
711 */
712int ff_h264_fill_default_ref_list(H264Context *h);
713
714int ff_h264_decode_ref_pic_list_reordering(H264Context *h);
715void ff_h264_fill_mbaff_ref_list(H264Context *h);
716void ff_h264_remove_all_refs(H264Context *h);
717
718/**
49bd8e4b 719 * Execute the reference picture marking (memory management control operations).
ea6f00c4
MN
720 */
721int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count);
722
bad446e2
RB
723int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb,
724 int first_slice);
ea6f00c4 725
ea382767 726int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice);
733f5990 727
ea6f00c4 728/**
be545b8a
DB
729 * Check if the top & left blocks are available if needed & change the
730 * dc mode so it only uses the available blocks.
903d58f6 731 */
2bedc0e8
MN
732int ff_h264_check_intra4x4_pred_mode(H264Context *h);
733
734/**
be545b8a
DB
735 * Check if the top & left blocks are available if needed & change the
736 * dc mode so it only uses the available blocks.
2bedc0e8 737 */
45b7bd7c 738int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma);
903d58f6 739
903d58f6 740void ff_h264_hl_decode_mb(H264Context *h);
05e95319 741int ff_h264_decode_extradata(H264Context *h);
94ee7da0
DB
742int ff_h264_decode_init(AVCodecContext *avctx);
743void ff_h264_decode_init_vlc(void);
e1e94902
MN
744
745/**
49bd8e4b 746 * Decode a macroblock
be545b8a 747 * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
e1e94902
MN
748 */
749int ff_h264_decode_mb_cavlc(H264Context *h);
903d58f6 750
cc51b282 751/**
49bd8e4b 752 * Decode a CABAC coded macroblock
be545b8a 753 * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error
cc51b282
MN
754 */
755int ff_h264_decode_mb_cabac(H264Context *h);
756
757void ff_h264_init_cabac_states(H264Context *h);
758
be545b8a
DB
759void ff_h264_direct_dist_scale_factor(H264Context *const h);
760void ff_h264_direct_ref_list_init(H264Context *const h);
761void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type);
943f69a6 762
be545b8a
DB
763void ff_h264_filter_mb_fast(H264Context *h, int mb_x, int mb_y,
764 uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
765 unsigned int linesize, unsigned int uvlinesize);
766void ff_h264_filter_mb(H264Context *h, int mb_x, int mb_y,
767 uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr,
768 unsigned int linesize, unsigned int uvlinesize);
082cf971 769
9c095463
MN
770/**
771 * Reset SEI values at the beginning of the frame.
772 *
773 * @param h H.264 context.
774 */
775void ff_h264_reset_sei(H264Context *h);
776
903d58f6 777/*
be545b8a
DB
778 * o-o o-o
779 * / / /
780 * o-o o-o
781 * ,---'
782 * o-o o-o
783 * / / /
784 * o-o o-o
785 */
5657d140
JGG
786
787/* Scan8 organization:
c90b9442
JGG
788 * 0 1 2 3 4 5 6 7
789 * 0 DY y y y y y
790 * 1 y Y Y Y Y
791 * 2 y Y Y Y Y
792 * 3 y Y Y Y Y
793 * 4 y Y Y Y Y
794 * 5 DU u u u u u
795 * 6 u U U U U
796 * 7 u U U U U
797 * 8 u U U U U
798 * 9 u U U U U
799 * 10 DV v v v v v
800 * 11 v V V V V
801 * 12 v V V V V
802 * 13 v V V V V
803 * 14 v V V V V
5657d140
JGG
804 * DY/DU/DV are for luma/chroma DC.
805 */
806
c90b9442
JGG
807#define LUMA_DC_BLOCK_INDEX 48
808#define CHROMA_DC_BLOCK_INDEX 49
809
be545b8a
DB
810// This table must be here because scan8[constant] must be known at compiletime
811static const uint8_t scan8[16 * 3 + 3] = {
812 4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8,
813 6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8,
814 4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8,
815 6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8,
816 4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8,
817 6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8,
818 4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8,
819 6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8,
820 4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8,
821 6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8,
822 4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8,
823 6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8,
824 0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8
903d58f6
MN
825};
826
be545b8a
DB
827static av_always_inline uint32_t pack16to32(int a, int b)
828{
903d58f6 829#if HAVE_BIGENDIAN
be545b8a 830 return (b & 0xFFFF) + (a << 16);
903d58f6 831#else
be545b8a 832 return (a & 0xFFFF) + (b << 16);
903d58f6
MN
833#endif
834}
835
be545b8a
DB
836static av_always_inline uint16_t pack8to16(int a, int b)
837{
b5bd0700 838#if HAVE_BIGENDIAN
be545b8a 839 return (b & 0xFF) + (a << 8);
b5bd0700 840#else
be545b8a 841 return (a & 0xFF) + (b << 8);
b5bd0700
MN
842#endif
843}
844
903d58f6 845/**
58c42af7 846 * Get the chroma qp.
082cf971 847 */
be545b8a
DB
848static av_always_inline int get_chroma_qp(H264Context *h, int t, int qscale)
849{
082cf971
MN
850 return h->pps.chroma_qp_table[t][qscale];
851}
852
44a5e7b6 853/**
58c42af7 854 * Get the predicted intra4x4 prediction mode.
e1e94902 855 */
be545b8a
DB
856static av_always_inline int pred_intra_mode(H264Context *h, int n)
857{
858 const int index8 = scan8[n];
859 const int left = h->intra4x4_pred_mode_cache[index8 - 1];
860 const int top = h->intra4x4_pred_mode_cache[index8 - 8];
861 const int min = FFMIN(left, top);
e1e94902 862
2c541554 863 tprintf(h->avctx, "mode:%d %d min:%d\n", left, top, min);
e1e94902 864
be545b8a
DB
865 if (min < 0)
866 return DC_PRED;
867 else
868 return min;
e1e94902
MN
869}
870
be545b8a
DB
871static av_always_inline void write_back_intra_pred_mode(H264Context *h)
872{
873 int8_t *i4x4 = h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy];
874 int8_t *i4x4_cache = h->intra4x4_pred_mode_cache;
3b7ebeb4 875
be545b8a
DB
876 AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
877 i4x4[4] = i4x4_cache[7 + 8 * 3];
878 i4x4[5] = i4x4_cache[7 + 8 * 2];
879 i4x4[6] = i4x4_cache[7 + 8 * 1];
3b7ebeb4 880}
e1e94902 881
be545b8a
DB
882static av_always_inline void write_back_non_zero_count(H264Context *h)
883{
884 const int mb_xy = h->mb_xy;
885 uint8_t *nnz = h->non_zero_count[mb_xy];
3b7ebeb4
JGG
886 uint8_t *nnz_cache = h->non_zero_count_cache;
887
be545b8a
DB
888 AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]);
889 AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]);
890 AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]);
891 AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]);
892 AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]);
893 AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]);
894 AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]);
895 AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]);
896
2c541554 897 if (!h->chroma_y_shift) {
be545b8a
DB
898 AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]);
899 AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]);
900 AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]);
901 AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]);
3b7ebeb4
JGG
902 }
903}
904
be545b8a 905static av_always_inline void write_back_motion_list(H264Context *h,
be545b8a
DB
906 int b_stride,
907 int b_xy, int b8_xy,
908 int mb_type, int list)
3b7ebeb4 909{
759001c5 910 int16_t(*mv_dst)[2] = &h->cur_pic.motion_val[list][b_xy];
be545b8a
DB
911 int16_t(*mv_src)[2] = &h->mv_cache[list][scan8[0]];
912 AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0);
913 AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1);
914 AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2);
915 AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3);
6d2b6f21 916 if (CABAC(h)) {
be545b8a
DB
917 uint8_t (*mvd_dst)[2] = &h->mvd_table[list][FMO ? 8 * h->mb_xy
918 : h->mb2br_xy[h->mb_xy]];
919 uint8_t(*mvd_src)[2] = &h->mvd_cache[list][scan8[0]];
920 if (IS_SKIP(mb_type)) {
3b7ebeb4 921 AV_ZERO128(mvd_dst);
be545b8a
DB
922 } else {
923 AV_COPY64(mvd_dst, mvd_src + 8 * 3);
924 AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0);
925 AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1);
926 AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2);
3b7ebeb4
JGG
927 }
928 }
929
930 {
759001c5 931 int8_t *ref_index = &h->cur_pic.ref_index[list][b8_xy];
3b7ebeb4 932 int8_t *ref_cache = h->ref_cache[list];
be545b8a
DB
933 ref_index[0 + 0 * 2] = ref_cache[scan8[0]];
934 ref_index[1 + 0 * 2] = ref_cache[scan8[4]];
935 ref_index[0 + 1 * 2] = ref_cache[scan8[8]];
936 ref_index[1 + 1 * 2] = ref_cache[scan8[12]];
c90b9442 937 }
e1e94902
MN
938}
939
be545b8a
DB
940static av_always_inline void write_back_motion(H264Context *h, int mb_type)
941{
be545b8a 942 const int b_stride = h->b_stride;
2c541554 943 const int b_xy = 4 * h->mb_x + 4 * h->mb_y * h->b_stride; // try mb2b(8)_xy
be545b8a 944 const int b8_xy = 4 * h->mb_xy;
e1e94902 945
be545b8a 946 if (USES_LIST(mb_type, 0)) {
2c541554 947 write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 0);
be545b8a 948 } else {
759001c5 949 fill_rectangle(&h->cur_pic.ref_index[0][b8_xy],
657ccb5a 950 2, 2, 2, (uint8_t)LIST_NOT_USED, 1);
3b7ebeb4 951 }
be545b8a 952 if (USES_LIST(mb_type, 1))
2c541554 953 write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 1);
e1e94902 954
6d2b6f21 955 if (h->slice_type_nos == AV_PICTURE_TYPE_B && CABAC(h)) {
be545b8a
DB
956 if (IS_8X8(mb_type)) {
957 uint8_t *direct_table = &h->direct_table[4 * h->mb_xy];
958 direct_table[1] = h->sub_mb_type[1] >> 1;
959 direct_table[2] = h->sub_mb_type[2] >> 1;
960 direct_table[3] = h->sub_mb_type[3] >> 1;
e1e94902
MN
961 }
962 }
963}
964
be545b8a
DB
965static av_always_inline int get_dct8x8_allowed(H264Context *h)
966{
967 if (h->sps.direct_8x8_inference_flag)
968 return !(AV_RN64A(h->sub_mb_type) &
969 ((MB_TYPE_16x8 | MB_TYPE_8x16 | MB_TYPE_8x8) *
970 0x0001000100010001ULL));
e1e94902 971 else
be545b8a
DB
972 return !(AV_RN64A(h->sub_mb_type) &
973 ((MB_TYPE_16x8 | MB_TYPE_8x16 | MB_TYPE_8x8 | MB_TYPE_DIRECT2) *
974 0x0001000100010001ULL));
e1e94902
MN
975}
976
2c541554 977void ff_h264_draw_horiz_band(H264Context *h, int y, int height);
3f1a7ceb 978int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc);
4baba6c8
YN
979int ff_pred_weight_table(H264Context *h);
980int ff_set_ref_count(H264Context *h);
2c541554 981
98790382 982#endif /* AVCODEC_H264_H */