2 * HEVC parameter set parsing
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
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18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifndef AVCODEC_HEVC_PS_H
22 #define AVCODEC_HEVC_PS_H
26 #include "libavutil/buffer.h"
27 #include "libavutil/pixfmt.h"
28 #include "libavutil/rational.h"
34 typedef struct ShortTermRPS {
35 unsigned int num_negative_pics;
37 int rps_idx_num_delta_pocs;
38 int32_t delta_poc[32];
42 typedef struct LongTermRPS {
48 typedef struct SliceHeader {
51 ///< address (in raster order) of the first block in the current slice segment
52 unsigned int slice_segment_addr;
53 ///< address (in raster order) of the first block in the current slice
54 unsigned int slice_addr;
56 enum HEVCSliceType slice_type;
58 int pic_order_cnt_lsb;
60 uint8_t first_slice_in_pic_flag;
61 uint8_t dependent_slice_segment_flag;
62 uint8_t pic_output_flag;
63 uint8_t colour_plane_id;
65 ///< RPS coded in the slice header itself is stored here
66 int short_term_ref_pic_set_sps_flag;
67 int short_term_ref_pic_set_size;
68 ShortTermRPS slice_rps;
69 const ShortTermRPS *short_term_rps;
70 int long_term_ref_pic_set_size;
71 LongTermRPS long_term_rps;
72 unsigned int list_entry_lx[2][32];
74 uint8_t rpl_modification_flag[2];
75 uint8_t no_output_of_prior_pics_flag;
76 uint8_t slice_temporal_mvp_enabled_flag;
78 unsigned int nb_refs[2];
80 uint8_t slice_sample_adaptive_offset_flag[3];
81 uint8_t mvd_l1_zero_flag;
83 uint8_t cabac_init_flag;
84 uint8_t disable_deblocking_filter_flag; ///< slice_header_disable_deblocking_filter_flag
85 uint8_t slice_loop_filter_across_slices_enabled_flag;
86 uint8_t collocated_list;
88 unsigned int collocated_ref_idx;
91 int slice_cb_qp_offset;
92 int slice_cr_qp_offset;
94 uint8_t cu_chroma_qp_offset_enabled_flag;
96 int beta_offset; ///< beta_offset_div2 * 2
97 int tc_offset; ///< tc_offset_div2 * 2
99 unsigned int max_num_merge_cand; ///< 5 - 5_minus_max_num_merge_cand
101 unsigned *entry_point_offset;
104 int num_entry_point_offsets;
108 uint8_t luma_log2_weight_denom;
109 int16_t chroma_log2_weight_denom;
111 int16_t luma_weight_l0[16];
112 int16_t chroma_weight_l0[16][2];
113 int16_t chroma_weight_l1[16][2];
114 int16_t luma_weight_l1[16];
116 int16_t luma_offset_l0[16];
117 int16_t chroma_offset_l0[16][2];
119 int16_t luma_offset_l1[16];
120 int16_t chroma_offset_l1[16][2];
122 int slice_ctb_addr_rs;
125 typedef struct HEVCWindow {
126 unsigned int left_offset;
127 unsigned int right_offset;
128 unsigned int top_offset;
129 unsigned int bottom_offset;
135 int overscan_info_present_flag;
136 int overscan_appropriate_flag;
138 int video_signal_type_present_flag;
140 int video_full_range_flag;
141 int colour_description_present_flag;
142 uint8_t colour_primaries;
143 uint8_t transfer_characteristic;
144 uint8_t matrix_coeffs;
146 int chroma_loc_info_present_flag;
147 int chroma_sample_loc_type_top_field;
148 int chroma_sample_loc_type_bottom_field;
149 int neutra_chroma_indication_flag;
152 int frame_field_info_present_flag;
154 int default_display_window_flag;
155 HEVCWindow def_disp_win;
157 int vui_timing_info_present_flag;
158 uint32_t vui_num_units_in_tick;
159 uint32_t vui_time_scale;
160 int vui_poc_proportional_to_timing_flag;
161 int vui_num_ticks_poc_diff_one_minus1;
162 int vui_hrd_parameters_present_flag;
164 int bitstream_restriction_flag;
165 int tiles_fixed_structure_flag;
166 int motion_vectors_over_pic_boundaries_flag;
167 int restricted_ref_pic_lists_flag;
168 int min_spatial_segmentation_idc;
169 int max_bytes_per_pic_denom;
170 int max_bits_per_min_cu_denom;
171 int log2_max_mv_length_horizontal;
172 int log2_max_mv_length_vertical;
175 typedef struct PTLCommon {
176 uint8_t profile_space;
179 uint8_t profile_compatibility_flag[32];
180 uint8_t progressive_source_flag;
181 uint8_t interlaced_source_flag;
182 uint8_t non_packed_constraint_flag;
183 uint8_t frame_only_constraint_flag;
184 uint8_t max_12bit_constraint_flag;
185 uint8_t max_10bit_constraint_flag;
186 uint8_t max_8bit_constraint_flag;
187 uint8_t max_422chroma_constraint_flag;
188 uint8_t max_420chroma_constraint_flag;
189 uint8_t max_monochrome_constraint_flag;
190 uint8_t intra_constraint_flag;
191 uint8_t one_picture_only_constraint_flag;
192 uint8_t lower_bit_rate_constraint_flag;
193 uint8_t max_14bit_constraint_flag;
199 PTLCommon general_ptl;
200 PTLCommon sub_layer_ptl[HEVC_MAX_SUB_LAYERS];
202 uint8_t sub_layer_profile_present_flag[HEVC_MAX_SUB_LAYERS];
203 uint8_t sub_layer_level_present_flag[HEVC_MAX_SUB_LAYERS];
206 typedef struct HEVCVPS {
207 uint8_t vps_temporal_id_nesting_flag;
209 int vps_max_sub_layers; ///< vps_max_temporal_layers_minus1 + 1
212 int vps_sub_layer_ordering_info_present_flag;
213 unsigned int vps_max_dec_pic_buffering[HEVC_MAX_SUB_LAYERS];
214 unsigned int vps_num_reorder_pics[HEVC_MAX_SUB_LAYERS];
215 unsigned int vps_max_latency_increase[HEVC_MAX_SUB_LAYERS];
216 int vps_max_layer_id;
217 int vps_num_layer_sets; ///< vps_num_layer_sets_minus1 + 1
218 uint8_t vps_timing_info_present_flag;
219 uint32_t vps_num_units_in_tick;
220 uint32_t vps_time_scale;
221 uint8_t vps_poc_proportional_to_timing_flag;
222 int vps_num_ticks_poc_diff_one; ///< vps_num_ticks_poc_diff_one_minus1 + 1
223 int vps_num_hrd_parameters;
229 typedef struct ScalingList {
230 /* This is a little wasteful, since sizeID 0 only needs 8 coeffs,
231 * and size ID 3 only has 2 arrays, not 6. */
232 uint8_t sl[4][6][64];
236 typedef struct HEVCSPS {
238 int chroma_format_idc;
239 uint8_t separate_colour_plane_flag;
241 HEVCWindow output_window;
243 HEVCWindow pic_conf_win;
246 int bit_depth_chroma;
248 enum AVPixelFormat pix_fmt;
250 unsigned int log2_max_poc_lsb;
251 int pcm_enabled_flag;
255 int max_dec_pic_buffering;
256 int num_reorder_pics;
257 int max_latency_increase;
258 } temporal_layer[HEVC_MAX_SUB_LAYERS];
259 uint8_t temporal_id_nesting_flag;
264 uint8_t scaling_list_enable_flag;
265 ScalingList scaling_list;
267 unsigned int nb_st_rps;
268 ShortTermRPS st_rps[HEVC_MAX_SHORT_TERM_REF_PIC_SETS];
270 uint8_t amp_enabled_flag;
273 uint8_t long_term_ref_pics_present_flag;
274 uint16_t lt_ref_pic_poc_lsb_sps[HEVC_MAX_LONG_TERM_REF_PICS];
275 uint8_t used_by_curr_pic_lt_sps_flag[HEVC_MAX_LONG_TERM_REF_PICS];
276 uint8_t num_long_term_ref_pics_sps;
280 uint8_t bit_depth_chroma;
281 unsigned int log2_min_pcm_cb_size;
282 unsigned int log2_max_pcm_cb_size;
283 uint8_t loop_filter_disable_flag;
285 uint8_t sps_temporal_mvp_enabled_flag;
286 uint8_t sps_strong_intra_smoothing_enable_flag;
288 unsigned int log2_min_cb_size;
289 unsigned int log2_diff_max_min_coding_block_size;
290 unsigned int log2_min_tb_size;
291 unsigned int log2_max_trafo_size;
292 unsigned int log2_ctb_size;
293 unsigned int log2_min_pu_size;
295 int max_transform_hierarchy_depth_inter;
296 int max_transform_hierarchy_depth_intra;
298 int sps_range_extension_flag;
299 int transform_skip_rotation_enabled_flag;
300 int transform_skip_context_enabled_flag;
301 int implicit_rdpcm_enabled_flag;
302 int explicit_rdpcm_enabled_flag;
303 int extended_precision_processing_flag;
304 int intra_smoothing_disabled_flag;
305 int high_precision_offsets_enabled_flag;
306 int persistent_rice_adaptation_enabled_flag;
307 int cabac_bypass_alignment_enabled_flag;
309 ///< coded frame dimension in various units
332 typedef struct HEVCPPS {
333 unsigned int sps_id; ///< seq_parameter_set_id
335 uint8_t sign_data_hiding_flag;
337 uint8_t cabac_init_present_flag;
339 int num_ref_idx_l0_default_active; ///< num_ref_idx_l0_default_active_minus1 + 1
340 int num_ref_idx_l1_default_active; ///< num_ref_idx_l1_default_active_minus1 + 1
341 int pic_init_qp_minus26;
343 uint8_t constrained_intra_pred_flag;
344 uint8_t transform_skip_enabled_flag;
346 uint8_t cu_qp_delta_enabled_flag;
347 int diff_cu_qp_delta_depth;
351 uint8_t pic_slice_level_chroma_qp_offsets_present_flag;
352 uint8_t weighted_pred_flag;
353 uint8_t weighted_bipred_flag;
354 uint8_t output_flag_present_flag;
355 uint8_t transquant_bypass_enable_flag;
357 uint8_t dependent_slice_segments_enabled_flag;
358 uint8_t tiles_enabled_flag;
359 uint8_t entropy_coding_sync_enabled_flag;
361 uint16_t num_tile_columns; ///< num_tile_columns_minus1 + 1
362 uint16_t num_tile_rows; ///< num_tile_rows_minus1 + 1
363 uint8_t uniform_spacing_flag;
364 uint8_t loop_filter_across_tiles_enabled_flag;
366 uint8_t seq_loop_filter_across_slices_enabled_flag;
368 uint8_t deblocking_filter_control_present_flag;
369 uint8_t deblocking_filter_override_enabled_flag;
371 int beta_offset; ///< beta_offset_div2 * 2
372 int tc_offset; ///< tc_offset_div2 * 2
374 uint8_t scaling_list_data_present_flag;
375 ScalingList scaling_list;
377 uint8_t lists_modification_present_flag;
378 int log2_parallel_merge_level; ///< log2_parallel_merge_level_minus2 + 2
379 int num_extra_slice_header_bits;
380 uint8_t slice_header_extension_present_flag;
381 uint8_t log2_max_transform_skip_block_size;
382 uint8_t pps_range_extensions_flag;
383 uint8_t cross_component_prediction_enabled_flag;
384 uint8_t chroma_qp_offset_list_enabled_flag;
385 uint8_t diff_cu_chroma_qp_offset_depth;
386 uint8_t chroma_qp_offset_list_len_minus1;
387 int8_t cb_qp_offset_list[6];
388 int8_t cr_qp_offset_list[6];
389 uint8_t log2_sao_offset_scale_luma;
390 uint8_t log2_sao_offset_scale_chroma;
392 // Inferred parameters
393 unsigned int *column_width; ///< ColumnWidth
394 unsigned int *row_height; ///< RowHeight
395 unsigned int *col_bd; ///< ColBd
396 unsigned int *row_bd; ///< RowBd
399 int *ctb_addr_rs_to_ts; ///< CtbAddrRSToTS
400 int *ctb_addr_ts_to_rs; ///< CtbAddrTSToRS
401 int *tile_id; ///< TileId
402 int *tile_pos_rs; ///< TilePosRS
403 int *min_tb_addr_zs; ///< MinTbAddrZS
404 int *min_tb_addr_zs_tab;///< MinTbAddrZS
410 typedef struct HEVCParamSets {
411 AVBufferRef *vps_list[HEVC_MAX_VPS_COUNT];
412 AVBufferRef *sps_list[HEVC_MAX_SPS_COUNT];
413 AVBufferRef *pps_list[HEVC_MAX_PPS_COUNT];
415 /* currently active parameter sets */
422 * Parse the SPS from the bitstream into the provided HEVCSPS struct.
424 * @param sps_id the SPS id will be written here
425 * @param apply_defdispwin if set 1, the default display window from the VUI
426 * will be applied to the video dimensions
427 * @param vps_list if non-NULL, this function will validate that the SPS refers
430 int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
431 int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx);
433 int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx,
435 int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx,
436 HEVCParamSets *ps, int apply_defdispwin);
437 int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
440 void ff_hevc_ps_uninit(HEVCParamSets *ps);
442 int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,
443 ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header);
445 int ff_hevc_encode_nal_vps(HEVCVPS *vps, unsigned int id,
446 uint8_t *buf, int buf_size);
449 * Compute POC of the current frame and return it.
451 int ff_hevc_compute_poc(const HEVCSPS *sps, int pocTid0, int poc_lsb, int nal_unit_type);
453 #endif /* AVCODEC_HEVC_PS_H */