| 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 { |
| 341 | AVCodecContext *avctx; |
| 342 | MECmpContext mecc; |
| 343 | VideoDSPContext vdsp; |
| 344 | H264DSPContext h264dsp; |
| 345 | H264ChromaContext h264chroma; |
| 346 | H264QpelContext h264qpel; |
| 347 | ParseContext parse_context; |
| 348 | GetBitContext gb; |
| 349 | ERContext er; |
| 350 | |
| 351 | H264Picture *DPB; |
| 352 | H264Picture *cur_pic_ptr; |
| 353 | H264Picture cur_pic; |
| 354 | |
| 355 | int pixel_shift; ///< 0 for 8-bit H264, 1 for high-bit-depth H264 |
| 356 | int chroma_qp[2]; // QPc |
| 357 | |
| 358 | int qp_thresh; ///< QP threshold to skip loopfilter |
| 359 | |
| 360 | /* coded dimensions -- 16 * mb w/h */ |
| 361 | int width, height; |
| 362 | ptrdiff_t linesize, uvlinesize; |
| 363 | int chroma_x_shift, chroma_y_shift; |
| 364 | |
| 365 | int qscale; |
| 366 | int droppable; |
| 367 | int data_partitioning; |
| 368 | int coded_picture_number; |
| 369 | int low_delay; |
| 370 | |
| 371 | int context_initialized; |
| 372 | int flags; |
| 373 | int workaround_bugs; |
| 374 | |
| 375 | int prev_mb_skipped; |
| 376 | int next_mb_skipped; |
| 377 | |
| 378 | // prediction stuff |
| 379 | int chroma_pred_mode; |
| 380 | int intra16x16_pred_mode; |
| 381 | |
| 382 | int topleft_mb_xy; |
| 383 | int top_mb_xy; |
| 384 | int topright_mb_xy; |
| 385 | int left_mb_xy[LEFT_MBS]; |
| 386 | |
| 387 | int topleft_type; |
| 388 | int top_type; |
| 389 | int topright_type; |
| 390 | int left_type[LEFT_MBS]; |
| 391 | |
| 392 | const uint8_t *left_block; |
| 393 | int topleft_partition; |
| 394 | |
| 395 | int8_t intra4x4_pred_mode_cache[5 * 8]; |
| 396 | int8_t(*intra4x4_pred_mode); |
| 397 | H264PredContext hpc; |
| 398 | unsigned int topleft_samples_available; |
| 399 | unsigned int top_samples_available; |
| 400 | unsigned int topright_samples_available; |
| 401 | unsigned int left_samples_available; |
| 402 | uint8_t (*top_borders[2])[(16 * 3) * 2]; |
| 403 | |
| 404 | /** |
| 405 | * non zero coeff count cache. |
| 406 | * is 64 if not available. |
| 407 | */ |
| 408 | DECLARE_ALIGNED(8, uint8_t, non_zero_count_cache)[15 * 8]; |
| 409 | |
| 410 | uint8_t (*non_zero_count)[48]; |
| 411 | |
| 412 | /** |
| 413 | * Motion vector cache. |
| 414 | */ |
| 415 | DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2]; |
| 416 | DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8]; |
| 417 | #define LIST_NOT_USED -1 // FIXME rename? |
| 418 | #define PART_NOT_AVAILABLE -2 |
| 419 | |
| 420 | /** |
| 421 | * number of neighbors (top and/or left) that used 8x8 dct |
| 422 | */ |
| 423 | int neighbor_transform_size; |
| 424 | |
| 425 | /** |
| 426 | * block_offset[ 0..23] for frame macroblocks |
| 427 | * block_offset[24..47] for field macroblocks |
| 428 | */ |
| 429 | int block_offset[2 * (16 * 3)]; |
| 430 | |
| 431 | uint32_t *mb2b_xy; // FIXME are these 4 a good idea? |
| 432 | uint32_t *mb2br_xy; |
| 433 | int b_stride; // FIXME use s->b4_stride |
| 434 | |
| 435 | ptrdiff_t mb_linesize; ///< may be equal to s->linesize or s->linesize * 2, for mbaff |
| 436 | ptrdiff_t mb_uvlinesize; |
| 437 | |
| 438 | unsigned current_sps_id; ///< id of the current SPS |
| 439 | SPS sps; ///< current sps |
| 440 | PPS pps; ///< current pps |
| 441 | |
| 442 | int au_pps_id; ///< pps_id of current access unit |
| 443 | |
| 444 | uint32_t dequant4_buffer[6][QP_MAX_NUM + 1][16]; // FIXME should these be moved down? |
| 445 | uint32_t dequant8_buffer[6][QP_MAX_NUM + 1][64]; |
| 446 | uint32_t(*dequant4_coeff[6])[16]; |
| 447 | uint32_t(*dequant8_coeff[6])[64]; |
| 448 | |
| 449 | int slice_num; |
| 450 | uint16_t *slice_table; ///< slice_table_base + 2*mb_stride + 1 |
| 451 | int slice_type; |
| 452 | int slice_type_nos; ///< S free slice type (SI/SP are remapped to I/P) |
| 453 | int slice_type_fixed; |
| 454 | |
| 455 | // interlacing specific flags |
| 456 | int mb_aff_frame; |
| 457 | int mb_field_decoding_flag; |
| 458 | int mb_mbaff; ///< mb_aff_frame && mb_field_decoding_flag |
| 459 | int picture_structure; |
| 460 | int first_field; |
| 461 | |
| 462 | DECLARE_ALIGNED(8, uint16_t, sub_mb_type)[4]; |
| 463 | |
| 464 | // Weighted pred stuff |
| 465 | int use_weight; |
| 466 | int use_weight_chroma; |
| 467 | int luma_log2_weight_denom; |
| 468 | int chroma_log2_weight_denom; |
| 469 | // The following 2 can be changed to int8_t but that causes 10cpu cycles speedloss |
| 470 | int luma_weight[48][2][2]; |
| 471 | int chroma_weight[48][2][2][2]; |
| 472 | int implicit_weight[48][48][2]; |
| 473 | |
| 474 | int direct_spatial_mv_pred; |
| 475 | int col_parity; |
| 476 | int col_fieldoff; |
| 477 | int dist_scale_factor[32]; |
| 478 | int dist_scale_factor_field[2][32]; |
| 479 | int map_col_to_list0[2][16 + 32]; |
| 480 | int map_col_to_list0_field[2][2][16 + 32]; |
| 481 | |
| 482 | /** |
| 483 | * num_ref_idx_l0/1_active_minus1 + 1 |
| 484 | */ |
| 485 | unsigned int ref_count[2]; ///< counts frames or fields, depending on current mb mode |
| 486 | unsigned int list_count; |
| 487 | uint8_t *list_counts; ///< Array of list_count per MB specifying the slice type |
| 488 | H264Picture ref_list[2][48]; /**< 0..15: frame refs, 16..47: mbaff field refs. |
| 489 | * Reordered version of default_ref_list |
| 490 | * according to picture reordering in slice header */ |
| 491 | int ref2frm[MAX_SLICES][2][64]; ///< reference to frame number lists, used in the loop filter, the first 2 are for -2,-1 |
| 492 | |
| 493 | // data partitioning |
| 494 | GetBitContext intra_gb; |
| 495 | GetBitContext inter_gb; |
| 496 | GetBitContext *intra_gb_ptr; |
| 497 | GetBitContext *inter_gb_ptr; |
| 498 | |
| 499 | const uint8_t *intra_pcm_ptr; |
| 500 | 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. |
| 501 | DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2]; |
| 502 | 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 |
| 503 | |
| 504 | /** |
| 505 | * Cabac |
| 506 | */ |
| 507 | CABACContext cabac; |
| 508 | uint8_t cabac_state[1024]; |
| 509 | |
| 510 | /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0, 1, 2), 0x0? luma_cbp */ |
| 511 | uint16_t *cbp_table; |
| 512 | int cbp; |
| 513 | int top_cbp; |
| 514 | int left_cbp; |
| 515 | /* chroma_pred_mode for i4x4 or i16x16, else 0 */ |
| 516 | uint8_t *chroma_pred_mode_table; |
| 517 | int last_qscale_diff; |
| 518 | uint8_t (*mvd_table[2])[2]; |
| 519 | DECLARE_ALIGNED(16, uint8_t, mvd_cache)[2][5 * 8][2]; |
| 520 | uint8_t *direct_table; |
| 521 | uint8_t direct_cache[5 * 8]; |
| 522 | |
| 523 | uint8_t zigzag_scan[16]; |
| 524 | uint8_t zigzag_scan8x8[64]; |
| 525 | uint8_t zigzag_scan8x8_cavlc[64]; |
| 526 | uint8_t field_scan[16]; |
| 527 | uint8_t field_scan8x8[64]; |
| 528 | uint8_t field_scan8x8_cavlc[64]; |
| 529 | uint8_t zigzag_scan_q0[16]; |
| 530 | uint8_t zigzag_scan8x8_q0[64]; |
| 531 | uint8_t zigzag_scan8x8_cavlc_q0[64]; |
| 532 | uint8_t field_scan_q0[16]; |
| 533 | uint8_t field_scan8x8_q0[64]; |
| 534 | uint8_t field_scan8x8_cavlc_q0[64]; |
| 535 | |
| 536 | int x264_build; |
| 537 | |
| 538 | int mb_x, mb_y; |
| 539 | int resync_mb_x; |
| 540 | int resync_mb_y; |
| 541 | int mb_skip_run; |
| 542 | int mb_height, mb_width; |
| 543 | int mb_stride; |
| 544 | int mb_num; |
| 545 | int mb_xy; |
| 546 | |
| 547 | int is_complex; |
| 548 | |
| 549 | // deblock |
| 550 | int deblocking_filter; ///< disable_deblocking_filter_idc with 1 <-> 0 |
| 551 | int slice_alpha_c0_offset; |
| 552 | int slice_beta_offset; |
| 553 | |
| 554 | // ============================================================= |
| 555 | // Things below are not used in the MB or more inner code |
| 556 | |
| 557 | int nal_ref_idc; |
| 558 | int nal_unit_type; |
| 559 | uint8_t *rbsp_buffer[2]; |
| 560 | unsigned int rbsp_buffer_size[2]; |
| 561 | |
| 562 | /** |
| 563 | * Used to parse AVC variant of h264 |
| 564 | */ |
| 565 | int is_avc; ///< this flag is != 0 if codec is avc1 |
| 566 | int nal_length_size; ///< Number of bytes used for nal length (1, 2 or 4) |
| 567 | int got_first; ///< this flag is != 0 if we've parsed a frame |
| 568 | |
| 569 | int bit_depth_luma; ///< luma bit depth from sps to detect changes |
| 570 | int chroma_format_idc; ///< chroma format from sps to detect changes |
| 571 | |
| 572 | SPS *sps_buffers[MAX_SPS_COUNT]; |
| 573 | PPS *pps_buffers[MAX_PPS_COUNT]; |
| 574 | |
| 575 | int dequant_coeff_pps; ///< reinit tables when pps changes |
| 576 | |
| 577 | uint16_t *slice_table_base; |
| 578 | |
| 579 | // POC stuff |
| 580 | int poc_lsb; |
| 581 | int poc_msb; |
| 582 | int delta_poc_bottom; |
| 583 | int delta_poc[2]; |
| 584 | int frame_num; |
| 585 | int prev_poc_msb; ///< poc_msb of the last reference pic for POC type 0 |
| 586 | int prev_poc_lsb; ///< poc_lsb of the last reference pic for POC type 0 |
| 587 | int frame_num_offset; ///< for POC type 2 |
| 588 | int prev_frame_num_offset; ///< for POC type 2 |
| 589 | int prev_frame_num; ///< frame_num of the last pic for POC type 1/2 |
| 590 | |
| 591 | /** |
| 592 | * frame_num for frames or 2 * frame_num + 1 for field pics. |
| 593 | */ |
| 594 | int curr_pic_num; |
| 595 | |
| 596 | /** |
| 597 | * max_frame_num or 2 * max_frame_num for field pics. |
| 598 | */ |
| 599 | int max_pic_num; |
| 600 | |
| 601 | int redundant_pic_count; |
| 602 | |
| 603 | H264Picture default_ref_list[2][32]; ///< base reference list for all slices of a coded picture |
| 604 | H264Picture *short_ref[32]; |
| 605 | H264Picture *long_ref[32]; |
| 606 | H264Picture *delayed_pic[MAX_DELAYED_PIC_COUNT + 2]; // FIXME size? |
| 607 | int last_pocs[MAX_DELAYED_PIC_COUNT]; |
| 608 | H264Picture *next_output_pic; |
| 609 | int outputed_poc; |
| 610 | int next_outputed_poc; |
| 611 | |
| 612 | /** |
| 613 | * memory management control operations buffer. |
| 614 | */ |
| 615 | MMCO mmco[MAX_MMCO_COUNT]; |
| 616 | int mmco_index; |
| 617 | int mmco_reset; |
| 618 | |
| 619 | int long_ref_count; ///< number of actual long term references |
| 620 | int short_ref_count; ///< number of actual short term references |
| 621 | |
| 622 | int cabac_init_idc; |
| 623 | |
| 624 | /** |
| 625 | * @name Members for slice based multithreading |
| 626 | * @{ |
| 627 | */ |
| 628 | struct H264Context *thread_context[H264_MAX_THREADS]; |
| 629 | |
| 630 | /** |
| 631 | * current slice number, used to initialize slice_num of each thread/context |
| 632 | */ |
| 633 | int current_slice; |
| 634 | |
| 635 | /** |
| 636 | * Max number of threads / contexts. |
| 637 | * This is equal to AVCodecContext.thread_count unless |
| 638 | * multithreaded decoding is impossible, in which case it is |
| 639 | * reduced to 1. |
| 640 | */ |
| 641 | int max_contexts; |
| 642 | |
| 643 | int slice_context_count; |
| 644 | |
| 645 | /** |
| 646 | * 1 if the single thread fallback warning has already been |
| 647 | * displayed, 0 otherwise. |
| 648 | */ |
| 649 | int single_decode_warning; |
| 650 | |
| 651 | enum AVPictureType pict_type; |
| 652 | |
| 653 | int last_slice_type; |
| 654 | unsigned int last_ref_count[2]; |
| 655 | /** @} */ |
| 656 | |
| 657 | /** |
| 658 | * pic_struct in picture timing SEI message |
| 659 | */ |
| 660 | SEI_PicStructType sei_pic_struct; |
| 661 | |
| 662 | /** |
| 663 | * Complement sei_pic_struct |
| 664 | * SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced frames. |
| 665 | * However, soft telecined frames may have these values. |
| 666 | * This is used in an attempt to flag soft telecine progressive. |
| 667 | */ |
| 668 | int prev_interlaced_frame; |
| 669 | |
| 670 | /** |
| 671 | * frame_packing_arrangment SEI message |
| 672 | */ |
| 673 | int sei_frame_packing_present; |
| 674 | int frame_packing_arrangement_type; |
| 675 | int content_interpretation_type; |
| 676 | int quincunx_subsampling; |
| 677 | |
| 678 | /** |
| 679 | * display orientation SEI message |
| 680 | */ |
| 681 | int sei_display_orientation_present; |
| 682 | int sei_anticlockwise_rotation; |
| 683 | int sei_hflip, sei_vflip; |
| 684 | |
| 685 | /** |
| 686 | * Bit set of clock types for fields/frames in picture timing SEI message. |
| 687 | * For each found ct_type, appropriate bit is set (e.g., bit 1 for |
| 688 | * interlaced). |
| 689 | */ |
| 690 | int sei_ct_type; |
| 691 | |
| 692 | /** |
| 693 | * dpb_output_delay in picture timing SEI message, see H.264 C.2.2 |
| 694 | */ |
| 695 | int sei_dpb_output_delay; |
| 696 | |
| 697 | /** |
| 698 | * cpb_removal_delay in picture timing SEI message, see H.264 C.1.2 |
| 699 | */ |
| 700 | int sei_cpb_removal_delay; |
| 701 | |
| 702 | /** |
| 703 | * recovery_frame_cnt from SEI message |
| 704 | * |
| 705 | * Set to -1 if no recovery point SEI message found or to number of frames |
| 706 | * before playback synchronizes. Frames having recovery point are key |
| 707 | * frames. |
| 708 | */ |
| 709 | int sei_recovery_frame_cnt; |
| 710 | |
| 711 | /** |
| 712 | * Are the SEI recovery points looking valid. |
| 713 | */ |
| 714 | int valid_recovery_point; |
| 715 | |
| 716 | FPA sei_fpa; |
| 717 | |
| 718 | /** |
| 719 | * recovery_frame is the frame_num at which the next frame should |
| 720 | * be fully constructed. |
| 721 | * |
| 722 | * Set to -1 when not expecting a recovery point. |
| 723 | */ |
| 724 | int recovery_frame; |
| 725 | |
| 726 | /** |
| 727 | * We have seen an IDR, so all the following frames in coded order are correctly |
| 728 | * decodable. |
| 729 | */ |
| 730 | #define FRAME_RECOVERED_IDR (1 << 0) |
| 731 | /** |
| 732 | * Sufficient number of frames have been decoded since a SEI recovery point, |
| 733 | * so all the following frames in presentation order are correct. |
| 734 | */ |
| 735 | #define FRAME_RECOVERED_SEI (1 << 1) |
| 736 | |
| 737 | int frame_recovered; ///< Initial frame has been completely recovered |
| 738 | |
| 739 | int has_recovery_point; |
| 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 | |
| 748 | int cur_chroma_format_idc; |
| 749 | uint8_t *bipred_scratchpad; |
| 750 | |
| 751 | int16_t slice_row[MAX_SLICES]; ///< to detect when MAX_SLICES is too low |
| 752 | |
| 753 | uint8_t parse_history[6]; |
| 754 | int parse_history_count; |
| 755 | int parse_last_mb; |
| 756 | uint8_t *edge_emu_buffer; |
| 757 | int16_t *dc_val_base; |
| 758 | |
| 759 | AVBufferPool *qscale_table_pool; |
| 760 | AVBufferPool *mb_type_pool; |
| 761 | AVBufferPool *motion_val_pool; |
| 762 | AVBufferPool *ref_index_pool; |
| 763 | |
| 764 | /* Motion Estimation */ |
| 765 | qpel_mc_func (*qpel_put)[16]; |
| 766 | qpel_mc_func (*qpel_avg)[16]; |
| 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 | */ |
| 775 | int ff_h264_decode_sei(H264Context *h); |
| 776 | |
| 777 | /** |
| 778 | * Decode SPS |
| 779 | */ |
| 780 | int ff_h264_decode_seq_parameter_set(H264Context *h); |
| 781 | |
| 782 | /** |
| 783 | * compute profile from sps |
| 784 | */ |
| 785 | int ff_h264_get_profile(SPS *sps); |
| 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 | */ |
| 800 | const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, |
| 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 | */ |
| 807 | void ff_h264_free_context(H264Context *h); |
| 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 | */ |
| 818 | int ff_h264_alloc_tables(H264Context *h); |
| 819 | |
| 820 | /** |
| 821 | * Fill the default_ref_list. |
| 822 | */ |
| 823 | int ff_h264_fill_default_ref_list(H264Context *h); |
| 824 | |
| 825 | int ff_h264_decode_ref_pic_list_reordering(H264Context *h); |
| 826 | void ff_h264_fill_mbaff_ref_list(H264Context *h); |
| 827 | void ff_h264_remove_all_refs(H264Context *h); |
| 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 | |
| 834 | int ff_h264_decode_ref_pic_marking(H264Context *h, GetBitContext *gb, |
| 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 | */ |
| 843 | int ff_h264_check_intra4x4_pred_mode(H264Context *h); |
| 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 | |
| 851 | void ff_h264_hl_decode_mb(H264Context *h); |
| 852 | int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size); |
| 853 | int ff_h264_decode_init(AVCodecContext *avctx); |
| 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 | */ |
| 860 | int ff_h264_decode_mb_cavlc(H264Context *h); |
| 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 | */ |
| 866 | int ff_h264_decode_mb_cabac(H264Context *h); |
| 867 | |
| 868 | void ff_h264_init_cabac_states(H264Context *h); |
| 869 | |
| 870 | void h264_init_dequant_tables(H264Context *h); |
| 871 | |
| 872 | void ff_h264_direct_dist_scale_factor(H264Context *const h); |
| 873 | void ff_h264_direct_ref_list_init(H264Context *const h); |
| 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 | */ |
| 888 | void ff_h264_reset_sei(H264Context *h); |
| 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 | /* |
| 897 | * o-o o-o |
| 898 | * / / / |
| 899 | * o-o o-o |
| 900 | * ,---' |
| 901 | * o-o o-o |
| 902 | * / / / |
| 903 | * o-o o-o |
| 904 | */ |
| 905 | |
| 906 | /* Scan8 organization: |
| 907 | * 0 1 2 3 4 5 6 7 |
| 908 | * 0 DY y y y y y |
| 909 | * 1 y Y Y Y Y |
| 910 | * 2 y Y Y Y Y |
| 911 | * 3 y Y Y Y Y |
| 912 | * 4 y Y Y Y Y |
| 913 | * 5 DU u u u u u |
| 914 | * 6 u U U U U |
| 915 | * 7 u U U U U |
| 916 | * 8 u U U U U |
| 917 | * 9 u U U U U |
| 918 | * 10 DV v v v v v |
| 919 | * 11 v V V V V |
| 920 | * 12 v V V V V |
| 921 | * 13 v V V V V |
| 922 | * 14 v V V V V |
| 923 | * DY/DU/DV are for luma/chroma DC. |
| 924 | */ |
| 925 | |
| 926 | #define LUMA_DC_BLOCK_INDEX 48 |
| 927 | #define CHROMA_DC_BLOCK_INDEX 49 |
| 928 | |
| 929 | // This table must be here because scan8[constant] must be known at compiletime |
| 930 | static const uint8_t scan8[16 * 3 + 3] = { |
| 931 | 4 + 1 * 8, 5 + 1 * 8, 4 + 2 * 8, 5 + 2 * 8, |
| 932 | 6 + 1 * 8, 7 + 1 * 8, 6 + 2 * 8, 7 + 2 * 8, |
| 933 | 4 + 3 * 8, 5 + 3 * 8, 4 + 4 * 8, 5 + 4 * 8, |
| 934 | 6 + 3 * 8, 7 + 3 * 8, 6 + 4 * 8, 7 + 4 * 8, |
| 935 | 4 + 6 * 8, 5 + 6 * 8, 4 + 7 * 8, 5 + 7 * 8, |
| 936 | 6 + 6 * 8, 7 + 6 * 8, 6 + 7 * 8, 7 + 7 * 8, |
| 937 | 4 + 8 * 8, 5 + 8 * 8, 4 + 9 * 8, 5 + 9 * 8, |
| 938 | 6 + 8 * 8, 7 + 8 * 8, 6 + 9 * 8, 7 + 9 * 8, |
| 939 | 4 + 11 * 8, 5 + 11 * 8, 4 + 12 * 8, 5 + 12 * 8, |
| 940 | 6 + 11 * 8, 7 + 11 * 8, 6 + 12 * 8, 7 + 12 * 8, |
| 941 | 4 + 13 * 8, 5 + 13 * 8, 4 + 14 * 8, 5 + 14 * 8, |
| 942 | 6 + 13 * 8, 7 + 13 * 8, 6 + 14 * 8, 7 + 14 * 8, |
| 943 | 0 + 0 * 8, 0 + 5 * 8, 0 + 10 * 8 |
| 944 | }; |
| 945 | |
| 946 | static av_always_inline uint32_t pack16to32(int a, int b) |
| 947 | { |
| 948 | #if HAVE_BIGENDIAN |
| 949 | return (b & 0xFFFF) + (a << 16); |
| 950 | #else |
| 951 | return (a & 0xFFFF) + (b << 16); |
| 952 | #endif |
| 953 | } |
| 954 | |
| 955 | static av_always_inline uint16_t pack8to16(int a, int b) |
| 956 | { |
| 957 | #if HAVE_BIGENDIAN |
| 958 | return (b & 0xFF) + (a << 8); |
| 959 | #else |
| 960 | return (a & 0xFF) + (b << 8); |
| 961 | #endif |
| 962 | } |
| 963 | |
| 964 | /** |
| 965 | * Get the chroma qp. |
| 966 | */ |
| 967 | static av_always_inline int get_chroma_qp(H264Context *h, int t, int qscale) |
| 968 | { |
| 969 | return h->pps.chroma_qp_table[t][qscale]; |
| 970 | } |
| 971 | |
| 972 | /** |
| 973 | * Get the predicted intra4x4 prediction mode. |
| 974 | */ |
| 975 | static av_always_inline int pred_intra_mode(H264Context *h, int n) |
| 976 | { |
| 977 | const int index8 = scan8[n]; |
| 978 | const int left = h->intra4x4_pred_mode_cache[index8 - 1]; |
| 979 | const int top = h->intra4x4_pred_mode_cache[index8 - 8]; |
| 980 | const int min = FFMIN(left, top); |
| 981 | |
| 982 | tprintf(h->avctx, "mode:%d %d min:%d\n", left, top, min); |
| 983 | |
| 984 | if (min < 0) |
| 985 | return DC_PRED; |
| 986 | else |
| 987 | return min; |
| 988 | } |
| 989 | |
| 990 | static av_always_inline void write_back_intra_pred_mode(H264Context *h) |
| 991 | { |
| 992 | int8_t *i4x4 = h->intra4x4_pred_mode + h->mb2br_xy[h->mb_xy]; |
| 993 | int8_t *i4x4_cache = h->intra4x4_pred_mode_cache; |
| 994 | |
| 995 | AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4); |
| 996 | i4x4[4] = i4x4_cache[7 + 8 * 3]; |
| 997 | i4x4[5] = i4x4_cache[7 + 8 * 2]; |
| 998 | i4x4[6] = i4x4_cache[7 + 8 * 1]; |
| 999 | } |
| 1000 | |
| 1001 | static av_always_inline void write_back_non_zero_count(H264Context *h) |
| 1002 | { |
| 1003 | const int mb_xy = h->mb_xy; |
| 1004 | uint8_t *nnz = h->non_zero_count[mb_xy]; |
| 1005 | uint8_t *nnz_cache = h->non_zero_count_cache; |
| 1006 | |
| 1007 | AV_COPY32(&nnz[ 0], &nnz_cache[4 + 8 * 1]); |
| 1008 | AV_COPY32(&nnz[ 4], &nnz_cache[4 + 8 * 2]); |
| 1009 | AV_COPY32(&nnz[ 8], &nnz_cache[4 + 8 * 3]); |
| 1010 | AV_COPY32(&nnz[12], &nnz_cache[4 + 8 * 4]); |
| 1011 | AV_COPY32(&nnz[16], &nnz_cache[4 + 8 * 6]); |
| 1012 | AV_COPY32(&nnz[20], &nnz_cache[4 + 8 * 7]); |
| 1013 | AV_COPY32(&nnz[32], &nnz_cache[4 + 8 * 11]); |
| 1014 | AV_COPY32(&nnz[36], &nnz_cache[4 + 8 * 12]); |
| 1015 | |
| 1016 | if (!h->chroma_y_shift) { |
| 1017 | AV_COPY32(&nnz[24], &nnz_cache[4 + 8 * 8]); |
| 1018 | AV_COPY32(&nnz[28], &nnz_cache[4 + 8 * 9]); |
| 1019 | AV_COPY32(&nnz[40], &nnz_cache[4 + 8 * 13]); |
| 1020 | AV_COPY32(&nnz[44], &nnz_cache[4 + 8 * 14]); |
| 1021 | } |
| 1022 | } |
| 1023 | |
| 1024 | static av_always_inline void write_back_motion_list(H264Context *h, |
| 1025 | int b_stride, |
| 1026 | int b_xy, int b8_xy, |
| 1027 | int mb_type, int list) |
| 1028 | { |
| 1029 | int16_t(*mv_dst)[2] = &h->cur_pic.motion_val[list][b_xy]; |
| 1030 | int16_t(*mv_src)[2] = &h->mv_cache[list][scan8[0]]; |
| 1031 | AV_COPY128(mv_dst + 0 * b_stride, mv_src + 8 * 0); |
| 1032 | AV_COPY128(mv_dst + 1 * b_stride, mv_src + 8 * 1); |
| 1033 | AV_COPY128(mv_dst + 2 * b_stride, mv_src + 8 * 2); |
| 1034 | AV_COPY128(mv_dst + 3 * b_stride, mv_src + 8 * 3); |
| 1035 | if (CABAC(h)) { |
| 1036 | uint8_t (*mvd_dst)[2] = &h->mvd_table[list][FMO ? 8 * h->mb_xy |
| 1037 | : h->mb2br_xy[h->mb_xy]]; |
| 1038 | uint8_t(*mvd_src)[2] = &h->mvd_cache[list][scan8[0]]; |
| 1039 | if (IS_SKIP(mb_type)) { |
| 1040 | AV_ZERO128(mvd_dst); |
| 1041 | } else { |
| 1042 | AV_COPY64(mvd_dst, mvd_src + 8 * 3); |
| 1043 | AV_COPY16(mvd_dst + 3 + 3, mvd_src + 3 + 8 * 0); |
| 1044 | AV_COPY16(mvd_dst + 3 + 2, mvd_src + 3 + 8 * 1); |
| 1045 | AV_COPY16(mvd_dst + 3 + 1, mvd_src + 3 + 8 * 2); |
| 1046 | } |
| 1047 | } |
| 1048 | |
| 1049 | { |
| 1050 | int8_t *ref_index = &h->cur_pic.ref_index[list][b8_xy]; |
| 1051 | int8_t *ref_cache = h->ref_cache[list]; |
| 1052 | ref_index[0 + 0 * 2] = ref_cache[scan8[0]]; |
| 1053 | ref_index[1 + 0 * 2] = ref_cache[scan8[4]]; |
| 1054 | ref_index[0 + 1 * 2] = ref_cache[scan8[8]]; |
| 1055 | ref_index[1 + 1 * 2] = ref_cache[scan8[12]]; |
| 1056 | } |
| 1057 | } |
| 1058 | |
| 1059 | static av_always_inline void write_back_motion(H264Context *h, int mb_type) |
| 1060 | { |
| 1061 | const int b_stride = h->b_stride; |
| 1062 | const int b_xy = 4 * h->mb_x + 4 * h->mb_y * h->b_stride; // try mb2b(8)_xy |
| 1063 | const int b8_xy = 4 * h->mb_xy; |
| 1064 | |
| 1065 | if (USES_LIST(mb_type, 0)) { |
| 1066 | write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 0); |
| 1067 | } else { |
| 1068 | fill_rectangle(&h->cur_pic.ref_index[0][b8_xy], |
| 1069 | 2, 2, 2, (uint8_t)LIST_NOT_USED, 1); |
| 1070 | } |
| 1071 | if (USES_LIST(mb_type, 1)) |
| 1072 | write_back_motion_list(h, b_stride, b_xy, b8_xy, mb_type, 1); |
| 1073 | |
| 1074 | if (h->slice_type_nos == AV_PICTURE_TYPE_B && CABAC(h)) { |
| 1075 | if (IS_8X8(mb_type)) { |
| 1076 | uint8_t *direct_table = &h->direct_table[4 * h->mb_xy]; |
| 1077 | direct_table[1] = h->sub_mb_type[1] >> 1; |
| 1078 | direct_table[2] = h->sub_mb_type[2] >> 1; |
| 1079 | direct_table[3] = h->sub_mb_type[3] >> 1; |
| 1080 | } |
| 1081 | } |
| 1082 | } |
| 1083 | |
| 1084 | static av_always_inline int get_dct8x8_allowed(H264Context *h) |
| 1085 | { |
| 1086 | if (h->sps.direct_8x8_inference_flag) |
| 1087 | return !(AV_RN64A(h->sub_mb_type) & |
| 1088 | ((MB_TYPE_16x8 | MB_TYPE_8x16 | MB_TYPE_8x8) * |
| 1089 | 0x0001000100010001ULL)); |
| 1090 | else |
| 1091 | return !(AV_RN64A(h->sub_mb_type) & |
| 1092 | ((MB_TYPE_16x8 | MB_TYPE_8x16 | MB_TYPE_8x8 | MB_TYPE_DIRECT2) * |
| 1093 | 0x0001000100010001ULL)); |
| 1094 | } |
| 1095 | |
| 1096 | static inline int find_start_code(const uint8_t *buf, int buf_size, |
| 1097 | int buf_index, int next_avc) |
| 1098 | { |
| 1099 | uint32_t state = -1; |
| 1100 | |
| 1101 | buf_index = avpriv_find_start_code(buf + buf_index, buf + next_avc + 1, &state) - buf - 1; |
| 1102 | |
| 1103 | return FFMIN(buf_index, buf_size); |
| 1104 | } |
| 1105 | |
| 1106 | static inline int get_avc_nalsize(H264Context *h, const uint8_t *buf, |
| 1107 | int buf_size, int *buf_index) |
| 1108 | { |
| 1109 | int i, nalsize = 0; |
| 1110 | |
| 1111 | if (*buf_index >= buf_size - h->nal_length_size) |
| 1112 | return -1; |
| 1113 | |
| 1114 | for (i = 0; i < h->nal_length_size; i++) |
| 1115 | nalsize = ((unsigned)nalsize << 8) | buf[(*buf_index)++]; |
| 1116 | if (nalsize <= 0 || nalsize > buf_size - *buf_index) { |
| 1117 | av_log(h->avctx, AV_LOG_ERROR, |
| 1118 | "AVC: nal size %d\n", nalsize); |
| 1119 | return -1; |
| 1120 | } |
| 1121 | return nalsize; |
| 1122 | } |
| 1123 | |
| 1124 | int ff_h264_field_end(H264Context *h, int in_setup); |
| 1125 | |
| 1126 | int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src); |
| 1127 | void ff_h264_unref_picture(H264Context *h, H264Picture *pic); |
| 1128 | |
| 1129 | int ff_h264_context_init(H264Context *h); |
| 1130 | int ff_h264_set_parameter_from_sps(H264Context *h); |
| 1131 | |
| 1132 | void ff_h264_draw_horiz_band(H264Context *h, int y, int height); |
| 1133 | int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc); |
| 1134 | int ff_pred_weight_table(H264Context *h); |
| 1135 | int ff_set_ref_count(H264Context *h); |
| 1136 | |
| 1137 | int ff_h264_decode_slice_header(H264Context *h, H264Context *h0); |
| 1138 | #define SLICE_SINGLETHREAD 1 |
| 1139 | #define SLICE_SKIPED 2 |
| 1140 | |
| 1141 | int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count); |
| 1142 | int ff_h264_update_thread_context(AVCodecContext *dst, |
| 1143 | const AVCodecContext *src); |
| 1144 | |
| 1145 | void ff_h264_flush_change(H264Context *h); |
| 1146 | |
| 1147 | void ff_h264_free_tables(H264Context *h, int free_rbsp); |
| 1148 | |
| 1149 | void ff_h264_set_erpic(ERPicture *dst, H264Picture *src); |
| 1150 | |
| 1151 | #endif /* AVCODEC_H264_H */ |