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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 "me_cmp.h" | |
41 | #include "mpegutils.h" | |
42 | #include "parser.h" | |
43 | #include "qpeldsp.h" | |
44 | #include "rectangle.h" | |
45 | #include "videodsp.h" | |
46 | ||
47 | #define H264_MAX_PICTURE_COUNT 36 | |
48 | #define H264_MAX_THREADS 32 | |
49 | ||
50 | #define MAX_SPS_COUNT 32 | |
51 | #define MAX_PPS_COUNT 256 | |
52 | ||
53 | #define MAX_MMCO_COUNT 66 | |
54 | ||
55 | #define MAX_DELAYED_PIC_COUNT 16 | |
56 | ||
57 | #define MAX_MBPAIR_SIZE (256*1024) // a tighter bound could be calculated if someone cares about a few bytes | |
58 | ||
59 | /* Compiling in interlaced support reduces the speed | |
60 | * of progressive decoding by about 2%. */ | |
61 | #define ALLOW_INTERLACE | |
62 | ||
63 | #define FMO 0 | |
64 | ||
65 | /** | |
66 | * The maximum number of slices supported by the decoder. | |
67 | * must be a power of 2 | |
68 | */ | |
69 | #define MAX_SLICES 16 | |
70 | ||
71 | #ifdef ALLOW_INTERLACE | |
72 | #define MB_MBAFF(h) (h)->mb_mbaff | |
73 | #define MB_FIELD(h) (h)->mb_field_decoding_flag | |
74 | #define FRAME_MBAFF(h) (h)->mb_aff_frame | |
75 | #define FIELD_PICTURE(h) ((h)->picture_structure != PICT_FRAME) | |
76 | #define LEFT_MBS 2 | |
77 | #define LTOP 0 | |
78 | #define LBOT 1 | |
79 | #define LEFT(i) (i) | |
80 | #else | |
81 | #define MB_MBAFF(h) 0 | |
82 | #define MB_FIELD(h) 0 | |
83 | #define FRAME_MBAFF(h) 0 | |
84 | #define FIELD_PICTURE(h) 0 | |
85 | #undef IS_INTERLACED | |
86 | #define IS_INTERLACED(mb_type) 0 | |
87 | #define LEFT_MBS 1 | |
88 | #define LTOP 0 | |
89 | #define LBOT 0 | |
90 | #define LEFT(i) 0 | |
91 | #endif | |
92 | #define FIELD_OR_MBAFF_PICTURE(h) (FRAME_MBAFF(h) || FIELD_PICTURE(h)) | |
93 | ||
94 | #ifndef CABAC | |
95 | #define CABAC(h) (h)->pps.cabac | |
96 | #endif | |
97 | ||
98 | #define CHROMA(h) ((h)->sps.chroma_format_idc) | |
99 | #define CHROMA422(h) ((h)->sps.chroma_format_idc == 2) | |
100 | #define CHROMA444(h) ((h)->sps.chroma_format_idc == 3) | |
101 | ||
102 | #define EXTENDED_SAR 255 | |
103 | ||
104 | #define MB_TYPE_REF0 MB_TYPE_ACPRED // dirty but it fits in 16 bit | |
105 | #define MB_TYPE_8x8DCT 0x01000000 | |
106 | #define IS_REF0(a) ((a) & MB_TYPE_REF0) | |
107 | #define IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT) | |
108 | ||
109 | #define QP_MAX_NUM (51 + 6*6) // The maximum supported qp | |
110 | ||
111 | /* NAL unit types */ | |
112 | enum { | |
113 | NAL_SLICE = 1, | |
114 | NAL_DPA = 2, | |
115 | NAL_DPB = 3, | |
116 | NAL_DPC = 4, | |
117 | NAL_IDR_SLICE = 5, | |
118 | NAL_SEI = 6, | |
119 | NAL_SPS = 7, | |
120 | NAL_PPS = 8, | |
121 | NAL_AUD = 9, | |
122 | NAL_END_SEQUENCE = 10, | |
123 | NAL_END_STREAM = 11, | |
124 | NAL_FILLER_DATA = 12, | |
125 | NAL_SPS_EXT = 13, | |
126 | NAL_AUXILIARY_SLICE = 19, | |
127 | NAL_FF_IGNORE = 0xff0f001, | |
128 | }; | |
129 | ||
130 | /** | |
131 | * SEI message types | |
132 | */ | |
133 | typedef enum { | |
134 | SEI_TYPE_BUFFERING_PERIOD = 0, ///< buffering period (H.264, D.1.1) | |
135 | SEI_TYPE_PIC_TIMING = 1, ///< picture timing | |
136 | SEI_TYPE_USER_DATA_ITU_T_T35 = 4, ///< user data registered by ITU-T Recommendation T.35 | |
137 | SEI_TYPE_USER_DATA_UNREGISTERED = 5, ///< unregistered user data | |
138 | SEI_TYPE_RECOVERY_POINT = 6, ///< recovery point (frame # to decoder sync) | |
139 | SEI_TYPE_FRAME_PACKING = 45, ///< frame packing arrangement | |
140 | SEI_TYPE_DISPLAY_ORIENTATION = 47, ///< display orientation | |
141 | } SEI_Type; | |
142 | ||
143 | /** | |
144 | * pic_struct in picture timing SEI message | |
145 | */ | |
146 | typedef enum { | |
147 | SEI_PIC_STRUCT_FRAME = 0, ///< 0: %frame | |
148 | SEI_PIC_STRUCT_TOP_FIELD = 1, ///< 1: top field | |
149 | SEI_PIC_STRUCT_BOTTOM_FIELD = 2, ///< 2: bottom field | |
150 | SEI_PIC_STRUCT_TOP_BOTTOM = 3, ///< 3: top field, bottom field, in that order | |
151 | SEI_PIC_STRUCT_BOTTOM_TOP = 4, ///< 4: bottom field, top field, in that order | |
152 | SEI_PIC_STRUCT_TOP_BOTTOM_TOP = 5, ///< 5: top field, bottom field, top field repeated, in that order | |
153 | SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM = 6, ///< 6: bottom field, top field, bottom field repeated, in that order | |
154 | SEI_PIC_STRUCT_FRAME_DOUBLING = 7, ///< 7: %frame doubling | |
155 | SEI_PIC_STRUCT_FRAME_TRIPLING = 8 ///< 8: %frame tripling | |
156 | } SEI_PicStructType; | |
157 | ||
158 | /** | |
159 | * frame_packing_arrangement types | |
160 | */ | |
161 | typedef enum { | |
162 | SEI_FPA_TYPE_CHECKERBOARD = 0, | |
163 | SEI_FPA_TYPE_INTERLEAVE_COLUMN = 1, | |
164 | SEI_FPA_TYPE_INTERLEAVE_ROW = 2, | |
165 | SEI_FPA_TYPE_SIDE_BY_SIDE = 3, | |
166 | SEI_FPA_TYPE_TOP_BOTTOM = 4, | |
167 | SEI_FPA_TYPE_INTERLEAVE_TEMPORAL = 5, | |
168 | SEI_FPA_TYPE_2D = 6, | |
169 | } SEI_FpaType; | |
170 | ||
171 | /** | |
172 | * Sequence parameter set | |
173 | */ | |
174 | typedef struct SPS { | |
175 | unsigned int sps_id; | |
176 | int profile_idc; | |
177 | int level_idc; | |
178 | int chroma_format_idc; | |
179 | int transform_bypass; ///< qpprime_y_zero_transform_bypass_flag | |
180 | int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4 | |
181 | int poc_type; ///< pic_order_cnt_type | |
182 | int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4 | |
183 | int delta_pic_order_always_zero_flag; | |
184 | int offset_for_non_ref_pic; | |
185 | int offset_for_top_to_bottom_field; | |
186 | int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle | |
187 | int ref_frame_count; ///< num_ref_frames | |
188 | int gaps_in_frame_num_allowed_flag; | |
189 | int mb_width; ///< pic_width_in_mbs_minus1 + 1 | |
190 | int mb_height; ///< pic_height_in_map_units_minus1 + 1 | |
191 | int frame_mbs_only_flag; | |
192 | int mb_aff; ///< mb_adaptive_frame_field_flag | |
193 | int direct_8x8_inference_flag; | |
194 | int crop; ///< frame_cropping_flag | |
195 | ||
196 | /* those 4 are already in luma samples */ | |
197 | unsigned int crop_left; ///< frame_cropping_rect_left_offset | |
198 | unsigned int crop_right; ///< frame_cropping_rect_right_offset | |
199 | unsigned int crop_top; ///< frame_cropping_rect_top_offset | |
200 | unsigned int crop_bottom; ///< frame_cropping_rect_bottom_offset | |
201 | int vui_parameters_present_flag; | |
202 | AVRational sar; | |
203 | int video_signal_type_present_flag; | |
204 | int full_range; | |
205 | int colour_description_present_flag; | |
206 | enum AVColorPrimaries color_primaries; | |
207 | enum AVColorTransferCharacteristic color_trc; | |
208 | enum AVColorSpace colorspace; | |
209 | int timing_info_present_flag; | |
210 | uint32_t num_units_in_tick; | |
211 | uint32_t time_scale; | |
212 | int fixed_frame_rate_flag; | |
213 | short offset_for_ref_frame[256]; // FIXME dyn aloc? | |
214 | int bitstream_restriction_flag; | |
215 | int num_reorder_frames; | |
216 | int scaling_matrix_present; | |
217 | uint8_t scaling_matrix4[6][16]; | |
218 | uint8_t scaling_matrix8[6][64]; | |
219 | int nal_hrd_parameters_present_flag; | |
220 | int vcl_hrd_parameters_present_flag; | |
221 | int pic_struct_present_flag; | |
222 | int time_offset_length; | |
223 | int cpb_cnt; ///< See H.264 E.1.2 | |
224 | int initial_cpb_removal_delay_length; ///< initial_cpb_removal_delay_length_minus1 + 1 | |
225 | int cpb_removal_delay_length; ///< cpb_removal_delay_length_minus1 + 1 | |
226 | int dpb_output_delay_length; ///< dpb_output_delay_length_minus1 + 1 | |
227 | int bit_depth_luma; ///< bit_depth_luma_minus8 + 8 | |
228 | int bit_depth_chroma; ///< bit_depth_chroma_minus8 + 8 | |
229 | int residual_color_transform_flag; ///< residual_colour_transform_flag | |
230 | int constraint_set_flags; ///< constraint_set[0-3]_flag | |
231 | int new; ///< flag to keep track if the decoder context needs re-init due to changed SPS | |
232 | } SPS; | |
233 | ||
234 | /** | |
235 | * Picture parameter set | |
236 | */ | |
237 | typedef struct PPS { | |
238 | unsigned int sps_id; | |
239 | int cabac; ///< entropy_coding_mode_flag | |
240 | int pic_order_present; ///< pic_order_present_flag | |
241 | int slice_group_count; ///< num_slice_groups_minus1 + 1 | |
242 | int mb_slice_group_map_type; | |
243 | unsigned int ref_count[2]; ///< num_ref_idx_l0/1_active_minus1 + 1 | |
244 | int weighted_pred; ///< weighted_pred_flag | |
245 | int weighted_bipred_idc; | |
246 | int init_qp; ///< pic_init_qp_minus26 + 26 | |
247 | int init_qs; ///< pic_init_qs_minus26 + 26 | |
248 | int chroma_qp_index_offset[2]; | |
249 | int deblocking_filter_parameters_present; ///< deblocking_filter_parameters_present_flag | |
250 | int constrained_intra_pred; ///< constrained_intra_pred_flag | |
251 | int redundant_pic_cnt_present; ///< redundant_pic_cnt_present_flag | |
252 | int transform_8x8_mode; ///< transform_8x8_mode_flag | |
253 | uint8_t scaling_matrix4[6][16]; | |
254 | uint8_t scaling_matrix8[6][64]; | |
255 | uint8_t chroma_qp_table[2][QP_MAX_NUM+1]; ///< pre-scaled (with chroma_qp_index_offset) version of qp_table | |
256 | int chroma_qp_diff; | |
257 | } PPS; | |
258 | ||
259 | /** | |
260 | * Frame Packing Arrangement Type | |
261 | */ | |
262 | typedef struct FPA { | |
263 | int frame_packing_arrangement_id; | |
264 | int frame_packing_arrangement_cancel_flag; ///< is previous arrangement canceled, -1 if never received | |
265 | SEI_FpaType frame_packing_arrangement_type; | |
266 | int frame_packing_arrangement_repetition_period; | |
267 | int content_interpretation_type; | |
268 | int quincunx_sampling_flag; | |
269 | } FPA; | |
270 | ||
271 | /** | |
272 | * Memory management control operation opcode. | |
273 | */ | |
274 | typedef enum MMCOOpcode { | |
275 | MMCO_END = 0, | |
276 | MMCO_SHORT2UNUSED, | |
277 | MMCO_LONG2UNUSED, | |
278 | MMCO_SHORT2LONG, | |
279 | MMCO_SET_MAX_LONG, | |
280 | MMCO_RESET, | |
281 | MMCO_LONG, | |
282 | } MMCOOpcode; | |
283 | ||
284 | /** | |
285 | * Memory management control operation. | |
286 | */ | |
287 | typedef struct MMCO { | |
288 | MMCOOpcode opcode; | |
289 | int short_pic_num; ///< pic_num without wrapping (pic_num & max_pic_num) | |
290 | int long_arg; ///< index, pic_num, or num long refs depending on opcode | |
291 | } MMCO; | |
292 | ||
293 | typedef struct H264Picture { | |
294 | struct AVFrame f; | |
295 | uint8_t avframe_padding[1024]; // hack to allow linking to a avutil with larger AVFrame | |
296 | ThreadFrame tf; | |
297 | ||
298 | AVBufferRef *qscale_table_buf; | |
299 | int8_t *qscale_table; | |
300 | ||
301 | AVBufferRef *motion_val_buf[2]; | |
302 | int16_t (*motion_val[2])[2]; | |
303 | ||
304 | AVBufferRef *mb_type_buf; | |
305 | uint32_t *mb_type; | |
306 | ||
307 | AVBufferRef *hwaccel_priv_buf; | |
308 | void *hwaccel_picture_private; ///< hardware accelerator private data | |
309 | ||
310 | AVBufferRef *ref_index_buf[2]; | |
311 | int8_t *ref_index[2]; | |
312 | ||
313 | int field_poc[2]; ///< top/bottom POC | |
314 | int poc; ///< frame POC | |
315 | int frame_num; ///< frame_num (raw frame_num from slice header) | |
316 | int mmco_reset; /**< MMCO_RESET set this 1. Reordering code must | |
317 | not mix pictures before and after MMCO_RESET. */ | |
318 | int pic_id; /**< pic_num (short -> no wrap version of pic_num, | |
319 | pic_num & max_pic_num; long -> long_pic_num) */ | |
320 | int long_ref; ///< 1->long term reference 0->short term reference | |
321 | int ref_poc[2][2][32]; ///< POCs of the frames/fields used as reference (FIXME need per slice) | |
322 | int ref_count[2][2]; ///< number of entries in ref_poc (FIXME need per slice) | |
323 | int mbaff; ///< 1 -> MBAFF frame 0-> not MBAFF | |
324 | int field_picture; ///< whether or not picture was encoded in separate fields | |
325 | ||
326 | int needs_realloc; ///< picture needs to be reallocated (eg due to a frame size change) | |
327 | int reference; | |
328 | int recovered; ///< picture at IDR or recovery point + recovery count | |
329 | int invalid_gap; | |
330 | int sei_recovery_frame_cnt; | |
331 | ||
332 | int crop; | |
333 | int crop_left; | |
334 | int crop_top; | |
335 | } H264Picture; | |
336 | ||
337 | /** | |
338 | * H264Context | |
339 | */ | |
340 | typedef struct H264Context { | |
092a9121 | 341 | AVClass *av_class; |
2ba45a60 DM |
342 | AVCodecContext *avctx; |
343 | MECmpContext mecc; | |
344 | VideoDSPContext vdsp; | |
345 | H264DSPContext h264dsp; | |
346 | H264ChromaContext h264chroma; | |
347 | H264QpelContext h264qpel; | |
348 | ParseContext parse_context; | |
349 | GetBitContext gb; | |
350 | ERContext er; | |
351 | ||
352 | H264Picture *DPB; | |
353 | H264Picture *cur_pic_ptr; | |
354 | H264Picture cur_pic; | |
355 | ||
356 | int pixel_shift; ///< 0 for 8-bit H264, 1 for high-bit-depth H264 | |
357 | int chroma_qp[2]; // QPc | |
358 | ||
359 | int qp_thresh; ///< QP threshold to skip loopfilter | |
360 | ||
361 | /* coded dimensions -- 16 * mb w/h */ | |
362 | int width, height; | |
363 | ptrdiff_t linesize, uvlinesize; | |
364 | int chroma_x_shift, chroma_y_shift; | |
365 | ||
366 | int qscale; | |
367 | int droppable; | |
368 | int data_partitioning; | |
369 | int coded_picture_number; | |
370 | int low_delay; | |
371 | ||
372 | int context_initialized; | |
373 | int flags; | |
374 | int workaround_bugs; | |
375 | ||
376 | int prev_mb_skipped; | |
377 | int next_mb_skipped; | |
378 | ||
379 | // prediction stuff | |
380 | int chroma_pred_mode; | |
381 | int intra16x16_pred_mode; | |
382 | ||
383 | int topleft_mb_xy; | |
384 | int top_mb_xy; | |
385 | int topright_mb_xy; | |
386 | int left_mb_xy[LEFT_MBS]; | |
387 | ||
388 | int topleft_type; | |
389 | int top_type; | |
390 | int topright_type; | |
391 | int left_type[LEFT_MBS]; | |
392 | ||
393 | const uint8_t *left_block; | |
394 | int topleft_partition; | |
395 | ||
396 | int8_t intra4x4_pred_mode_cache[5 * 8]; | |
397 | int8_t(*intra4x4_pred_mode); | |
398 | H264PredContext hpc; | |
399 | unsigned int topleft_samples_available; | |
400 | unsigned int top_samples_available; | |
401 | unsigned int topright_samples_available; | |
402 | unsigned int left_samples_available; | |
403 | uint8_t (*top_borders[2])[(16 * 3) * 2]; | |
404 | ||
405 | /** | |
406 | * non zero coeff count cache. | |
407 | * is 64 if not available. | |
408 | */ | |
409 | DECLARE_ALIGNED(8, uint8_t, non_zero_count_cache)[15 * 8]; | |
410 | ||
411 | uint8_t (*non_zero_count)[48]; | |
412 | ||
413 | /** | |
414 | * Motion vector cache. | |
415 | */ | |
416 | DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2]; | |
417 | DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8]; | |
418 | #define LIST_NOT_USED -1 // FIXME rename? | |
419 | #define PART_NOT_AVAILABLE -2 | |
420 | ||
421 | /** | |
422 | * number of neighbors (top and/or left) that used 8x8 dct | |
423 | */ | |
424 | int neighbor_transform_size; | |
425 | ||
426 | /** | |
427 | * block_offset[ 0..23] for frame macroblocks | |
428 | * block_offset[24..47] for field macroblocks | |
429 | */ | |
430 | int block_offset[2 * (16 * 3)]; | |
431 | ||
432 | uint32_t *mb2b_xy; // FIXME are these 4 a good idea? | |
433 | uint32_t *mb2br_xy; | |
434 | int b_stride; // FIXME use s->b4_stride | |
435 | ||
436 | ptrdiff_t mb_linesize; ///< may be equal to s->linesize or s->linesize * 2, for mbaff | |
437 | ptrdiff_t mb_uvlinesize; | |
438 | ||
439 | unsigned current_sps_id; ///< id of the current SPS | |
440 | SPS sps; ///< current sps | |
441 | PPS pps; ///< current pps | |
442 | ||
443 | int au_pps_id; ///< pps_id of current access unit | |
444 | ||
445 | uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; // FIXME should these be moved down? | |
446 | uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64]; | |
447 | uint32_t(*dequant4_coeff[6])[16]; | |
448 | uint32_t(*dequant8_coeff[6])[64]; | |
449 | ||
450 | int slice_num; | |
451 | uint16_t *slice_table; ///< slice_table_base + 2*mb_stride + 1 | |
452 | int slice_type; | |
453 | int slice_type_nos; ///< S free slice type (SI/SP are remapped to I/P) | |
454 | int slice_type_fixed; | |
455 | ||
456 | // interlacing specific flags | |
457 | int mb_aff_frame; | |
458 | int mb_field_decoding_flag; | |
459 | int mb_mbaff; ///< mb_aff_frame && mb_field_decoding_flag | |
460 | int picture_structure; | |
461 | int first_field; | |
462 | ||
463 | DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4]; | |
464 | ||
465 | // Weighted pred stuff | |
466 | int use_weight; | |
467 | int use_weight_chroma; | |
468 | int luma_log2_weight_denom; | |
469 | int chroma_log2_weight_denom; | |
470 | // The following 2 can be changed to int8_t but that causes 10cpu cycles speedloss | |
471 | int luma_weight[48][2][2]; | |
472 | int chroma_weight[48][2][2][2]; | |
473 | int implicit_weight[48][48][2]; | |
474 | ||
475 | int direct_spatial_mv_pred; | |
476 | int col_parity; | |
477 | int col_fieldoff; | |
478 | int dist_scale_factor[32]; | |
479 | int dist_scale_factor_field[2][32]; | |
480 | int map_col_to_list0[2][16 + 32]; | |
481 | int map_col_to_list0_field[2][2][16 + 32]; | |
482 | ||
483 | /** | |
484 | * num_ref_idx_l0/1_active_minus1 + 1 | |
485 | */ | |
486 | unsigned int ref_count[2]; ///< counts frames or fields, depending on current mb mode | |
487 | unsigned int list_count; | |
488 | uint8_t *list_counts; ///< Array of list_count per MB specifying the slice type | |
489 | H264Picture ref_list[2][48]; /**< 0..15: frame refs, 16..47: mbaff field refs. | |
490 | * Reordered version of default_ref_list | |
491 | * according to picture reordering in slice header */ | |
492 | int ref2frm[MAX_SLICES][2][64]; ///< reference to frame number lists, used in the loop filter, the first 2 are for -2,-1 | |
493 | ||
494 | // data partitioning | |
495 | GetBitContext intra_gb; | |
496 | GetBitContext inter_gb; | |
497 | GetBitContext *intra_gb_ptr; | |
498 | GetBitContext *inter_gb_ptr; | |
499 | ||
500 | const uint8_t *intra_pcm_ptr; | |
501 | 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. | |
502 | DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2]; | |
503 | 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 | |
504 | ||
505 | /** | |
506 | * Cabac | |
507 | */ | |
508 | CABACContext cabac; | |
509 | uint8_t cabac_state[1024]; | |
510 | ||
511 | /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0, 1, 2), 0x0? luma_cbp */ | |
512 | uint16_t *cbp_table; | |
513 | int cbp; | |
514 | int top_cbp; | |
515 | int left_cbp; | |
516 | /* chroma_pred_mode for i4x4 or i16x16, else 0 */ | |
517 | uint8_t *chroma_pred_mode_table; | |
518 | int last_qscale_diff; | |
519 | uint8_t (*mvd_table[2])[2]; | |
520 | DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5 * 8][2]; | |
521 | uint8_t *direct_table; | |
522 | uint8_t direct_cache[5 * 8]; | |
523 | ||
524 | uint8_t zigzag_scan[16]; | |
525 | uint8_t zigzag_scan8x8[64]; | |
526 | uint8_t zigzag_scan8x8_cavlc[64]; | |
527 | uint8_t field_scan[16]; | |
528 | uint8_t field_scan8x8[64]; | |
529 | uint8_t field_scan8x8_cavlc[64]; | |
530 | uint8_t zigzag_scan_q0[16]; | |
531 | uint8_t zigzag_scan8x8_q0[64]; | |
532 | uint8_t zigzag_scan8x8_cavlc_q0[64]; | |
533 | uint8_t field_scan_q0[16]; | |
534 | uint8_t field_scan8x8_q0[64]; | |
535 | uint8_t field_scan8x8_cavlc_q0[64]; | |
536 | ||
537 | int x264_build; | |
538 | ||
539 | int mb_x, mb_y; | |
540 | int resync_mb_x; | |
541 | int resync_mb_y; | |
542 | int mb_skip_run; | |
543 | int mb_height, mb_width; | |
544 | int mb_stride; | |
545 | int mb_num; | |
546 | int mb_xy; | |
547 | ||
548 | int is_complex; | |
549 | ||
550 | // deblock | |
551 | int deblocking_filter; ///< disable_deblocking_filter_idc with 1 <-> 0 | |
552 | int slice_alpha_c0_offset; | |
553 | int slice_beta_offset; | |
554 | ||
555 | // ============================================================= | |
556 | // Things below are not used in the MB or more inner code | |
557 | ||
558 | int nal_ref_idc; | |
559 | int nal_unit_type; | |
560 | uint8_t *rbsp_buffer[2]; | |
561 | unsigned int rbsp_buffer_size[2]; | |
562 | ||
563 | /** | |
564 | * Used to parse AVC variant of h264 | |
565 | */ | |
566 | int is_avc; ///< this flag is != 0 if codec is avc1 | |
567 | int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4) | |
568 | int got_first; ///< this flag is != 0 if we've parsed a frame | |
569 | ||
570 | int bit_depth_luma; ///< luma bit depth from sps to detect changes | |
571 | int chroma_format_idc; ///< chroma format from sps to detect changes | |
572 | ||
573 | SPS *sps_buffers[MAX_SPS_COUNT]; | |
574 | PPS *pps_buffers[MAX_PPS_COUNT]; | |
575 | ||
576 | int dequant_coeff_pps; ///< reinit tables when pps changes | |
577 | ||
578 | uint16_t *slice_table_base; | |
579 | ||
580 | // POC stuff | |
581 | int poc_lsb; | |
582 | int poc_msb; | |
583 | int delta_poc_bottom; | |
584 | int delta_poc[2]; | |
585 | int frame_num; | |
586 | int prev_poc_msb; ///< poc_msb of the last reference pic for POC type 0 | |
587 | int prev_poc_lsb; ///< poc_lsb of the last reference pic for POC type 0 | |
588 | int frame_num_offset; ///< for POC type 2 | |
589 | int prev_frame_num_offset; ///< for POC type 2 | |
590 | int prev_frame_num; ///< frame_num of the last pic for POC type 1/2 | |
591 | ||
592 | /** | |
593 | * frame_num for frames or 2 * frame_num + 1 for field pics. | |
594 | */ | |
595 | int curr_pic_num; | |
596 | ||
597 | /** | |
598 | * max_frame_num or 2 * max_frame_num for field pics. | |
599 | */ | |
600 | int max_pic_num; | |
601 | ||
602 | int redundant_pic_count; | |
603 | ||
604 | H264Picture default_ref_list[2][32]; ///< base reference list for all slices of a coded picture | |
605 | H264Picture *short_ref[32]; | |
606 | H264Picture *long_ref[32]; | |
607 | H264Picture *delayed_pic[MAX_DELAYED_PIC_COUNT + 2]; // FIXME size? | |
608 | int last_pocs[MAX_DELAYED_PIC_COUNT]; | |
609 | H264Picture *next_output_pic; | |
610 | int outputed_poc; | |
611 | int next_outputed_poc; | |
612 | ||
613 | /** | |
614 | * memory management control operations buffer. | |
615 | */ | |
616 | MMCO mmco[MAX_MMCO_COUNT]; | |
617 | int mmco_index; | |
618 | int mmco_reset; | |
619 | ||
620 | int long_ref_count; ///< number of actual long term references | |
621 | int short_ref_count; ///< number of actual short term references | |
622 | ||
623 | int cabac_init_idc; | |
624 | ||
625 | /** | |
626 | * @name Members for slice based multithreading | |
627 | * @{ | |
628 | */ | |
629 | struct H264Context *thread_context[H264_MAX_THREADS]; | |
630 | ||
631 | /** | |
632 | * current slice number, used to initialize slice_num of each thread/context | |
633 | */ | |
634 | int current_slice; | |
635 | ||
636 | /** | |
637 | * Max number of threads / contexts. | |
638 | * This is equal to AVCodecContext.thread_count unless | |
639 | * multithreaded decoding is impossible, in which case it is | |
640 | * reduced to 1. | |
641 | */ | |
642 | int max_contexts; | |
643 | ||
644 | int slice_context_count; | |
645 | ||
646 | /** | |
647 | * 1 if the single thread fallback warning has already been | |
648 | * displayed, 0 otherwise. | |
649 | */ | |
650 | int single_decode_warning; | |
651 | ||
652 | enum AVPictureType pict_type; | |
653 | ||
654 | int last_slice_type; | |
655 | unsigned int last_ref_count[2]; | |
656 | /** @} */ | |
657 | ||
658 | /** | |
659 | * pic_struct in picture timing SEI message | |
660 | */ | |
661 | SEI_PicStructType sei_pic_struct; | |
662 | ||
663 | /** | |
664 | * Complement sei_pic_struct | |
665 | * SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced frames. | |
666 | * However, soft telecined frames may have these values. | |
667 | * This is used in an attempt to flag soft telecine progressive. | |
668 | */ | |
669 | int prev_interlaced_frame; | |
670 | ||
671 | /** | |
672 | * frame_packing_arrangment SEI message | |
673 | */ | |
674 | int sei_frame_packing_present; | |
675 | int frame_packing_arrangement_type; | |
676 | int content_interpretation_type; | |
677 | int quincunx_subsampling; | |
678 | ||
679 | /** | |
680 | * display orientation SEI message | |
681 | */ | |
682 | int sei_display_orientation_present; | |
683 | int sei_anticlockwise_rotation; | |
684 | int sei_hflip, sei_vflip; | |
685 | ||
686 | /** | |
687 | * Bit set of clock types for fields/frames in picture timing SEI message. | |
688 | * For each found ct_type, appropriate bit is set (e.g., bit 1 for | |
689 | * interlaced). | |
690 | */ | |
691 | int sei_ct_type; | |
692 | ||
693 | /** | |
694 | * dpb_output_delay in picture timing SEI message, see H.264 C.2.2 | |
695 | */ | |
696 | int sei_dpb_output_delay; | |
697 | ||
698 | /** | |
699 | * cpb_removal_delay in picture timing SEI message, see H.264 C.1.2 | |
700 | */ | |
701 | int sei_cpb_removal_delay; | |
702 | ||
703 | /** | |
704 | * recovery_frame_cnt from SEI message | |
705 | * | |
706 | * Set to -1 if no recovery point SEI message found or to number of frames | |
707 | * before playback synchronizes. Frames having recovery point are key | |
708 | * frames. | |
709 | */ | |
710 | int sei_recovery_frame_cnt; | |
711 | ||
712 | /** | |
713 | * Are the SEI recovery points looking valid. | |
714 | */ | |
715 | int valid_recovery_point; | |
716 | ||
717 | FPA sei_fpa; | |
718 | ||
719 | /** | |
720 | * recovery_frame is the frame_num at which the next frame should | |
721 | * be fully constructed. | |
722 | * | |
723 | * Set to -1 when not expecting a recovery point. | |
724 | */ | |
725 | int recovery_frame; | |
726 | ||
727 | /** | |
728 | * We have seen an IDR, so all the following frames in coded order are correctly | |
729 | * decodable. | |
730 | */ | |
731 | #define FRAME_RECOVERED_IDR (1 << 0) | |
732 | /** | |
733 | * Sufficient number of frames have been decoded since a SEI recovery point, | |
734 | * so all the following frames in presentation order are correct. | |
735 | */ | |
736 | #define FRAME_RECOVERED_SEI (1 << 1) | |
737 | ||
738 | int frame_recovered; ///< Initial frame has been completely recovered | |
739 | ||
740 | int has_recovery_point; | |
741 | ||
742 | int luma_weight_flag[2]; ///< 7.4.3.2 luma_weight_lX_flag | |
743 | int chroma_weight_flag[2]; ///< 7.4.3.2 chroma_weight_lX_flag | |
744 | ||
745 | // Timestamp stuff | |
746 | int sei_buffering_period_present; ///< Buffering period SEI flag | |
747 | int initial_cpb_removal_delay[32]; ///< Initial timestamps for CPBs | |
748 | ||
749 | int cur_chroma_format_idc; | |
750 | uint8_t *bipred_scratchpad; | |
751 | ||
752 | int16_t slice_row[MAX_SLICES]; ///< to detect when MAX_SLICES is too low | |
753 | ||
754 | uint8_t parse_history[6]; | |
755 | int parse_history_count; | |
756 | int parse_last_mb; | |
757 | uint8_t *edge_emu_buffer; | |
758 | int16_t *dc_val_base; | |
759 | ||
760 | AVBufferPool *qscale_table_pool; | |
761 | AVBufferPool *mb_type_pool; | |
762 | AVBufferPool *motion_val_pool; | |
763 | AVBufferPool *ref_index_pool; | |
764 | ||
765 | /* Motion Estimation */ | |
766 | qpel_mc_func (*qpel_put)[16]; | |
767 | qpel_mc_func (*qpel_avg)[16]; | |
768 | } H264Context; | |
769 | ||
770 | extern const uint8_t ff_h264_chroma_qp[7][QP_MAX_NUM + 1]; ///< One chroma qp table for each possible bit depth (8-14). | |
771 | extern const uint16_t ff_h264_mb_sizes[4]; | |
772 | ||
773 | /** | |
774 | * Decode SEI | |
775 | */ | |
776 | int ff_h264_decode_sei(H264Context *h); | |
777 | ||
778 | /** | |
779 | * Decode SPS | |
780 | */ | |
781 | int ff_h264_decode_seq_parameter_set(H264Context *h); | |
782 | ||
783 | /** | |
784 | * compute profile from sps | |
785 | */ | |
786 | int ff_h264_get_profile(SPS *sps); | |
787 | ||
788 | /** | |
789 | * Decode PPS | |
790 | */ | |
791 | int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length); | |
792 | ||
793 | /** | |
794 | * Decode a network abstraction layer unit. | |
795 | * @param consumed is the number of bytes used as input | |
796 | * @param length is the length of the array | |
797 | * @param dst_length is the number of decoded bytes FIXME here | |
798 | * or a decode rbsp tailing? | |
799 | * @return decoded bytes, might be src+1 if no escapes | |
800 | */ | |
801 | const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, | |
802 | int *dst_length, int *consumed, int length); | |
803 | ||
804 | /** | |
805 | * Free any data that may have been allocated in the H264 context | |
806 | * like SPS, PPS etc. | |
807 | */ | |
808 | void ff_h264_free_context(H264Context *h); | |
809 | ||
810 | /** | |
811 | * Reconstruct bitstream slice_type. | |
812 | */ | |
813 | int ff_h264_get_slice_type(const H264Context *h); | |
814 | ||
815 | /** | |
816 | * Allocate tables. | |
817 | * needs width/height | |
818 | */ | |
819 | int ff_h264_alloc_tables(H264Context *h); | |
820 | ||
821 | /** | |
822 | * Fill the default_ref_list. | |
823 | */ | |
824 | int ff_h264_fill_default_ref_list(H264Context *h); | |
825 | ||
826 | int ff_h264_decode_ref_pic_list_reordering(H264Context *h); | |
827 | void ff_h264_fill_mbaff_ref_list(H264Context *h); | |
828 | void ff_h264_remove_all_refs(H264Context *h); | |
829 | ||
830 | /** | |
831 | * Execute the reference picture marking (memory management control operations). | |
832 | */ | |
833 | int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count); | |
834 | ||
835 | int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb, | |
836 | int first_slice); | |
837 | ||
838 | int ff_generate_sliding_window_mmcos(H264Context *h, int first_slice); | |
839 | ||
840 | /** | |
841 | * Check if the top & left blocks are available if needed & change the | |
842 | * dc mode so it only uses the available blocks. | |
843 | */ | |
844 | int ff_h264_check_intra4x4_pred_mode(H264Context *h); | |
845 | ||
846 | /** | |
847 | * Check if the top & left blocks are available if needed & change the | |
848 | * dc mode so it only uses the available blocks. | |
849 | */ | |
850 | int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma); | |
851 | ||
852 | void ff_h264_hl_decode_mb(H264Context *h); | |
853 | int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size); | |
854 | int ff_h264_decode_init(AVCodecContext *avctx); | |
855 | void ff_h264_decode_init_vlc(void); | |
856 | ||
857 | /** | |
858 | * Decode a macroblock | |
859 | * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error | |
860 | */ | |
861 | int ff_h264_decode_mb_cavlc(H264Context *h); | |
862 | ||
863 | /** | |
864 | * Decode a CABAC coded macroblock | |
865 | * @return 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error | |
866 | */ | |
867 | int ff_h264_decode_mb_cabac(H264Context *h); | |
868 | ||
869 | void ff_h264_init_cabac_states(H264Context *h); | |
870 | ||
871 | void h264_init_dequant_tables(H264Context *h); | |
872 | ||
873 | void ff_h264_direct_dist_scale_factor(H264Context *const h); | |
874 | void ff_h264_direct_ref_list_init(H264Context *const h); | |
875 | void ff_h264_pred_direct_motion(H264Context *const h, int *mb_type); | |
876 | ||
877 | void ff_h264_filter_mb_fast(H264Context *h, int mb_x, int mb_y, | |
878 | uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, | |
879 | unsigned int linesize, unsigned int uvlinesize); | |
880 | void ff_h264_filter_mb(H264Context *h, int mb_x, int mb_y, | |
881 | uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, | |
882 | unsigned int linesize, unsigned int uvlinesize); | |
883 | ||
884 | /** | |
885 | * Reset SEI values at the beginning of the frame. | |
886 | * | |
887 | * @param h H.264 context. | |
888 | */ | |
889 | void ff_h264_reset_sei(H264Context *h); | |
890 | ||
891 | /** | |
892 | * Get stereo_mode string from the h264 frame_packing_arrangement | |
893 | * @param h H.264 context. | |
894 | */ | |
895 | const char* ff_h264_sei_stereo_mode(H264Context *h); | |
896 | ||
897 | /* | |
898 | * o-o o-o | |
899 | * / / / | |
900 | * o-o o-o | |
901 | * ,---' | |
902 | * o-o o-o | |
903 | * / / / | |
904 | * o-o o-o | |
905 | */ | |
906 | ||
907 | /* Scan8 organization: | |
908 | * 0 1 2 3 4 5 6 7 | |
909 | * 0 DY y y y y y | |
910 | * 1 y Y Y Y Y | |
911 | * 2 y Y Y Y Y | |
912 | * 3 y Y Y Y Y | |
913 | * 4 y Y Y Y Y | |
914 | * 5 DU u u u u u | |
915 | * 6 u U U U U | |
916 | * 7 u U U U U | |
917 | * 8 u U U U U | |
918 | * 9 u U U U U | |
919 | * 10 DV v v v v v | |
920 | * 11 v V V V V | |
921 | * 12 v V V V V | |
922 | * 13 v V V V V | |
923 | * 14 v V V V V | |
924 | * DY/DU/DV are for luma/chroma DC. | |
925 | */ | |
926 | ||
927 | #define LUMA_DC_BLOCK_INDEX 48 | |
928 | #define CHROMA_DC_BLOCK_INDEX 49 | |
929 | ||
930 | // This table must be here because scan8[constant] must be known at compiletime | |
931 | static const uint8_t scan8[16 * 3 + 3] = { | |
932 | 4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8, | |
933 | 6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8, | |
934 | 4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8, | |
935 | 6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8, | |
936 | 4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8, | |
937 | 6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8, | |
938 | 4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8, | |
939 | 6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8, | |
940 | 4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8, | |
941 | 6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8, | |
942 | 4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8, | |
943 | 6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8, | |
944 | 0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8 | |
945 | }; | |
946 | ||
947 | static av_always_inline uint32_t pack16to32(int a, int b) | |
948 | { | |
949 | #if HAVE_BIGENDIAN | |
950 | return (b & 0xFFFF) + (a << 16); | |
951 | #else | |
952 | return (a & 0xFFFF) + (b << 16); | |
953 | #endif | |
954 | } | |
955 | ||
956 | static av_always_inline uint16_t pack8to16(int a, int b) | |
957 | { | |
958 | #if HAVE_BIGENDIAN | |
959 | return (b & 0xFF) + (a << 8); | |
960 | #else | |
961 | return (a & 0xFF) + (b << 8); | |
962 | #endif | |
963 | } | |
964 | ||
965 | /** | |
966 | * Get the chroma qp. | |
967 | */ | |
968 | static av_always_inline int get_chroma_qp(H264Context *h, int t, int qscale) | |
969 | { | |
970 | return h->pps.chroma_qp_table[t][qscale]; | |
971 | } | |
972 | ||
973 | /** | |
974 | * Get the predicted intra4x4 prediction mode. | |
975 | */ | |
976 | static av_always_inline int pred_intra_mode(H264Context *h, int n) | |
977 | { | |
978 | const int index8 = scan8[n]; | |
979 | const int left = h->intra4x4_pred_mode_cache[index8 - 1]; | |
980 | const int top = h->intra4x4_pred_mode_cache[index8 - 8]; | |
981 | const int min = FFMIN(left, top); | |
982 | ||
983 | tprintf(h->avctx, "mode:%d %d min:%d\n", left, top, min); | |
984 | ||
985 | if (min < 0) | |
986 | return DC_PRED; | |
987 | else | |
988 | return min; | |
989 | } | |
990 | ||
991 | static av_always_inline void write_back_intra_pred_mode(H264Context *h) | |
992 | { | |
993 | int8_t *i4x4 = h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy]; | |
994 | int8_t *i4x4_cache = h->intra4x4_pred_mode_cache; | |
995 | ||
996 | AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4); | |
997 | i4x4[4] = i4x4_cache[7 + 8 * 3]; | |
998 | i4x4[5] = i4x4_cache[7 + 8 * 2]; | |
999 | i4x4[6] = i4x4_cache[7 + 8 * 1]; | |
1000 | } | |
1001 | ||
1002 | static av_always_inline void write_back_non_zero_count(H264Context *h) | |
1003 | { | |
1004 | const int mb_xy = h->mb_xy; | |
1005 | uint8_t *nnz = h->non_zero_count[mb_xy]; | |
1006 | uint8_t *nnz_cache = h->non_zero_count_cache; | |
1007 | ||
1008 | AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]); | |
1009 | AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]); | |
1010 | AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]); | |
1011 | AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]); | |
1012 | AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]); | |
1013 | AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]); | |
1014 | AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]); | |
1015 | AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]); | |
1016 | ||
1017 | if (!h->chroma_y_shift) { | |
1018 | AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]); | |
1019 | AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]); | |
1020 | AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]); | |
1021 | AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]); | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | static av_always_inline void write_back_motion_list(H264Context *h, | |
1026 | int b_stride, | |
1027 | int b_xy, int b8_xy, | |
1028 | int mb_type, int list) | |
1029 | { | |
1030 | int16_t(*mv_dst)[2] = &h->cur_pic.motion_val[list][b_xy]; | |
1031 | int16_t(*mv_src)[2] = &h->mv_cache[list][scan8[0]]; | |
1032 | AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0); | |
1033 | AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1); | |
1034 | AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2); | |
1035 | AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3); | |
1036 | if (CABAC(h)) { | |
1037 | uint8_t (*mvd_dst)[2] = &h->mvd_table[list][FMO ? 8 * h->mb_xy | |
1038 | : h->mb2br_xy[h->mb_xy]]; | |
1039 | uint8_t(*mvd_src)[2] = &h->mvd_cache[list][scan8[0]]; | |
1040 | if (IS_SKIP(mb_type)) { | |
1041 | AV_ZERO128(mvd_dst); | |
1042 | } else { | |
1043 | AV_COPY64(mvd_dst, mvd_src + 8 * 3); | |
1044 | AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0); | |
1045 | AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1); | |
1046 | AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2); | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | { | |
1051 | int8_t *ref_index = &h->cur_pic.ref_index[list][b8_xy]; | |
1052 | int8_t *ref_cache = h->ref_cache[list]; | |
1053 | ref_index[0 + 0 * 2] = ref_cache[scan8[0]]; | |
1054 | ref_index[1 + 0 * 2] = ref_cache[scan8[4]]; | |
1055 | ref_index[0 + 1 * 2] = ref_cache[scan8[8]]; | |
1056 | ref_index[1 + 1 * 2] = ref_cache[scan8[12]]; | |
1057 | } | |
1058 | } | |
1059 | ||
1060 | static av_always_inline void write_back_motion(H264Context *h, int mb_type) | |
1061 | { | |
1062 | const int b_stride = h->b_stride; | |
1063 | const int b_xy = 4 * h->mb_x + 4 * h->mb_y * h->b_stride; // try mb2b(8)_xy | |
1064 | const int b8_xy = 4 * h->mb_xy; | |
1065 | ||
1066 | if (USES_LIST(mb_type, 0)) { | |
1067 | write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 0); | |
1068 | } else { | |
1069 | fill_rectangle(&h->cur_pic.ref_index[0][b8_xy], | |
1070 | 2, 2, 2, (uint8_t)LIST_NOT_USED, 1); | |
1071 | } | |
1072 | if (USES_LIST(mb_type, 1)) | |
1073 | write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 1); | |
1074 | ||
1075 | if (h->slice_type_nos == AV_PICTURE_TYPE_B && CABAC(h)) { | |
1076 | if (IS_8X8(mb_type)) { | |
1077 | uint8_t *direct_table = &h->direct_table[4 * h->mb_xy]; | |
1078 | direct_table[1] = h->sub_mb_type[1] >> 1; | |
1079 | direct_table[2] = h->sub_mb_type[2] >> 1; | |
1080 | direct_table[3] = h->sub_mb_type[3] >> 1; | |
1081 | } | |
1082 | } | |
1083 | } | |
1084 | ||
1085 | static av_always_inline int get_dct8x8_allowed(H264Context *h) | |
1086 | { | |
1087 | if (h->sps.direct_8x8_inference_flag) | |
1088 | return !(AV_RN64A(h->sub_mb_type) & | |
1089 | ((MB_TYPE_16x8 | MB_TYPE_8x16 | MB_TYPE_8x8) * | |
1090 | 0x0001000100010001ULL)); | |
1091 | else | |
1092 | return !(AV_RN64A(h->sub_mb_type) & | |
1093 | ((MB_TYPE_16x8 | MB_TYPE_8x16 | MB_TYPE_8x8 | MB_TYPE_DIRECT2) * | |
1094 | 0x0001000100010001ULL)); | |
1095 | } | |
1096 | ||
1097 | static inline int find_start_code(const uint8_t *buf, int buf_size, | |
1098 | int buf_index, int next_avc) | |
1099 | { | |
1100 | uint32_t state = -1; | |
1101 | ||
1102 | buf_index = avpriv_find_start_code(buf + buf_index, buf + next_avc + 1, &state) - buf - 1; | |
1103 | ||
1104 | return FFMIN(buf_index, buf_size); | |
1105 | } | |
1106 | ||
1107 | static inline int get_avc_nalsize(H264Context *h, const uint8_t *buf, | |
1108 | int buf_size, int *buf_index) | |
1109 | { | |
1110 | int i, nalsize = 0; | |
1111 | ||
1112 | if (*buf_index >= buf_size - h->nal_length_size) | |
1113 | return -1; | |
1114 | ||
1115 | for (i = 0; i < h->nal_length_size; i++) | |
1116 | nalsize = ((unsigned)nalsize << 8) | buf[(*buf_index)++]; | |
1117 | if (nalsize <= 0 || nalsize > buf_size - *buf_index) { | |
1118 | av_log(h->avctx, AV_LOG_ERROR, | |
1119 | "AVC: nal size %d\n", nalsize); | |
1120 | return -1; | |
1121 | } | |
1122 | return nalsize; | |
1123 | } | |
1124 | ||
1125 | int ff_h264_field_end(H264Context *h, int in_setup); | |
1126 | ||
1127 | int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src); | |
1128 | void ff_h264_unref_picture(H264Context *h, H264Picture *pic); | |
1129 | ||
1130 | int ff_h264_context_init(H264Context *h); | |
1131 | int ff_h264_set_parameter_from_sps(H264Context *h); | |
1132 | ||
1133 | void ff_h264_draw_horiz_band(H264Context *h, int y, int height); | |
1134 | int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc); | |
1135 | int ff_pred_weight_table(H264Context *h); | |
1136 | int ff_set_ref_count(H264Context *h); | |
1137 | ||
1138 | int ff_h264_decode_slice_header(H264Context *h, H264Context *h0); | |
1139 | #define SLICE_SINGLETHREAD 1 | |
1140 | #define SLICE_SKIPED 2 | |
1141 | ||
1142 | int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count); | |
1143 | int ff_h264_update_thread_context(AVCodecContext *dst, | |
1144 | const AVCodecContext *src); | |
1145 | ||
1146 | void ff_h264_flush_change(H264Context *h); | |
1147 | ||
1148 | void ff_h264_free_tables(H264Context *h, int free_rbsp); | |
1149 | ||
1150 | void ff_h264_set_erpic(ERPicture *dst, H264Picture *src); | |
1151 | ||
1152 | #endif /* AVCODEC_H264_H */ |