2 * HEVC Supplementary Enhancement Information messages
4 * Copyright (C) 2012 - 2013 Guillaume Martres
5 * Copyright (C) 2012 - 2013 Gildas Cocherel
6 * Copyright (C) 2013 Vittorio Giovara
8 * This file is part of FFmpeg.
10 * FFmpeg is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
15 * FFmpeg is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with FFmpeg; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 SEI_TYPE_BUFFERING_PERIOD = 0,
30 SEI_TYPE_PICTURE_TIMING = 1,
31 SEI_TYPE_PAN_SCAN_RECT = 2,
32 SEI_TYPE_FILLER_PAYLOAD = 3,
33 SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35 = 4,
34 SEI_TYPE_USER_DATA_UNREGISTERED = 5,
35 SEI_TYPE_RECOVERY_POINT = 6,
36 SEI_TYPE_SCENE_INFO = 9,
37 SEI_TYPE_FULL_FRAME_SNAPSHOT = 15,
38 SEI_TYPE_PROGRESSIVE_REFINEMENT_SEGMENT_START = 16,
39 SEI_TYPE_PROGRESSIVE_REFINEMENT_SEGMENT_END = 17,
40 SEI_TYPE_FILM_GRAIN_CHARACTERISTICS = 19,
41 SEI_TYPE_POST_FILTER_HINT = 22,
42 SEI_TYPE_TONE_MAPPING_INFO = 23,
43 SEI_TYPE_FRAME_PACKING = 45,
44 SEI_TYPE_DISPLAY_ORIENTATION = 47,
45 SEI_TYPE_SOP_DESCRIPTION = 128,
46 SEI_TYPE_ACTIVE_PARAMETER_SETS = 129,
47 SEI_TYPE_DECODING_UNIT_INFO = 130,
48 SEI_TYPE_TEMPORAL_LEVEL0_INDEX = 131,
49 SEI_TYPE_DECODED_PICTURE_HASH = 132,
50 SEI_TYPE_SCALABLE_NESTING = 133,
51 SEI_TYPE_REGION_REFRESH_INFO = 134,
52 SEI_TYPE_MASTERING_DISPLAY_INFO = 137,
53 SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO = 144,
56 static int decode_nal_sei_decoded_picture_hash(HEVCSEIPictureHash *s, GetBitContext *gb)
60 //uint16_t picture_crc;
61 //uint32_t picture_checksum;
62 hash_type = get_bits(gb, 8);
64 for (cIdx = 0; cIdx < 3/*((s->sps->chroma_format_idc == 0) ? 1 : 3)*/; cIdx++) {
67 for (i = 0; i < 16; i++)
68 s->md5[cIdx][i] = get_bits(gb, 8);
69 } else if (hash_type == 1) {
70 // picture_crc = get_bits(gb, 16);
72 } else if (hash_type == 2) {
73 // picture_checksum = get_bits_long(gb, 32);
80 static int decode_nal_sei_mastering_display_info(HEVCSEIMasteringDisplay *s, GetBitContext *gb)
83 // Mastering primaries
84 for (i = 0; i < 3; i++) {
85 s->display_primaries[i][0] = get_bits(gb, 16);
86 s->display_primaries[i][1] = get_bits(gb, 16);
89 s->white_point[0] = get_bits(gb, 16);
90 s->white_point[1] = get_bits(gb, 16);
92 // Max and min luminance of mastering display
93 s->max_luminance = get_bits_long(gb, 32);
94 s->min_luminance = get_bits_long(gb, 32);
96 // As this SEI message comes before the first frame that references it,
97 // initialize the flag to 2 and decrement on IRAP access unit so it
98 // persists for the coded video sequence (e.g., between two IRAPs)
103 static int decode_nal_sei_content_light_info(HEVCSEIContentLight *s, GetBitContext *gb)
105 // Max and average light levels
106 s->max_content_light_level = get_bits_long(gb, 16);
107 s->max_pic_average_light_level = get_bits_long(gb, 16);
108 // As this SEI message comes before the first frame that references it,
109 // initialize the flag to 2 and decrement on IRAP access unit so it
110 // persists for the coded video sequence (e.g., between two IRAPs)
115 static int decode_nal_sei_frame_packing_arrangement(HEVCSEIFramePacking *s, GetBitContext *gb)
117 get_ue_golomb_long(gb); // frame_packing_arrangement_id
118 s->present = !get_bits1(gb);
121 s->arrangement_type = get_bits(gb, 7);
122 s->quincunx_subsampling = get_bits1(gb);
123 s->content_interpretation_type = get_bits(gb, 6);
125 // the following skips spatial_flipping_flag frame0_flipped_flag
126 // field_views_flag current_frame_is_frame0_flag
127 // frame0_self_contained_flag frame1_self_contained_flag
130 if (!s->quincunx_subsampling && s->arrangement_type != 5)
131 skip_bits(gb, 16); // frame[01]_grid_position_[xy]
132 skip_bits(gb, 8); // frame_packing_arrangement_reserved_byte
133 skip_bits1(gb); // frame_packing_arrangement_persistence_flag
135 skip_bits1(gb); // upsampled_aspect_ratio_flag
139 static int decode_nal_sei_display_orientation(HEVCSEIDisplayOrientation *s, GetBitContext *gb)
141 s->present = !get_bits1(gb);
144 s->hflip = get_bits1(gb); // hor_flip
145 s->vflip = get_bits1(gb); // ver_flip
147 s->anticlockwise_rotation = get_bits(gb, 16);
148 skip_bits1(gb); // display_orientation_persistence_flag
154 static int decode_pic_timing(HEVCSEIContext *s, GetBitContext *gb, const HEVCParamSets *ps,
157 HEVCSEIPictureTiming *h = &s->picture_timing;
160 if (!ps->sps_list[s->active_seq_parameter_set_id])
161 return(AVERROR(ENOMEM));
162 sps = (HEVCSPS*)ps->sps_list[s->active_seq_parameter_set_id]->data;
164 if (sps->vui.frame_field_info_present_flag) {
165 int pic_struct = get_bits(gb, 4);
166 h->picture_struct = AV_PICTURE_STRUCTURE_UNKNOWN;
167 if (pic_struct == 2) {
168 av_log(logctx, AV_LOG_DEBUG, "BOTTOM Field\n");
169 h->picture_struct = AV_PICTURE_STRUCTURE_BOTTOM_FIELD;
170 } else if (pic_struct == 1) {
171 av_log(logctx, AV_LOG_DEBUG, "TOP Field\n");
172 h->picture_struct = AV_PICTURE_STRUCTURE_TOP_FIELD;
174 get_bits(gb, 2); // source_scan_type
175 get_bits(gb, 1); // duplicate_flag
180 static int decode_registered_user_data_closed_caption(HEVCSEIA53Caption *s, GetBitContext *gb,
184 int user_data_type_code;
188 return AVERROR(EINVAL);
190 user_data_type_code = get_bits(gb, 8);
191 if (user_data_type_code == 0x3) {
192 skip_bits(gb, 1); // reserved
194 flag = get_bits(gb, 1); // process_cc_data_flag
197 cc_count = get_bits(gb, 5);
198 skip_bits(gb, 8); // reserved
201 if (cc_count && size >= cc_count * 3) {
202 const uint64_t new_size = (s->a53_caption_size + cc_count
206 if (new_size > INT_MAX)
207 return AVERROR(EINVAL);
209 /* Allow merging of the cc data from two fields. */
210 ret = av_reallocp(&s->a53_caption, new_size);
214 for (i = 0; i < cc_count; i++) {
215 s->a53_caption[s->a53_caption_size++] = get_bits(gb, 8);
216 s->a53_caption[s->a53_caption_size++] = get_bits(gb, 8);
217 s->a53_caption[s->a53_caption_size++] = get_bits(gb, 8);
219 skip_bits(gb, 8); // marker_bits
224 for (i = 0; i < size - 1; i++)
231 static int decode_nal_sei_user_data_registered_itu_t_t35(HEVCSEIContext *s, GetBitContext *gb,
234 uint32_t country_code;
235 uint32_t user_identifier;
238 return AVERROR(EINVAL);
241 country_code = get_bits(gb, 8);
242 if (country_code == 0xFF) {
250 user_identifier = get_bits_long(gb, 32);
252 switch (user_identifier) {
253 case MKBETAG('G', 'A', '9', '4'):
254 return decode_registered_user_data_closed_caption(&s->a53_caption, gb, size);
256 skip_bits_long(gb, size * 8);
262 static int active_parameter_sets(HEVCSEIContext *s, GetBitContext *gb, void *logctx)
264 int num_sps_ids_minus1;
266 unsigned active_seq_parameter_set_id;
268 get_bits(gb, 4); // active_video_parameter_set_id
269 get_bits(gb, 1); // self_contained_cvs_flag
270 get_bits(gb, 1); // num_sps_ids_minus1
271 num_sps_ids_minus1 = get_ue_golomb_long(gb); // num_sps_ids_minus1
273 if (num_sps_ids_minus1 < 0 || num_sps_ids_minus1 > 15) {
274 av_log(logctx, AV_LOG_ERROR, "num_sps_ids_minus1 %d invalid\n", num_sps_ids_minus1);
275 return AVERROR_INVALIDDATA;
278 active_seq_parameter_set_id = get_ue_golomb_long(gb);
279 if (active_seq_parameter_set_id >= HEVC_MAX_SPS_COUNT) {
280 av_log(logctx, AV_LOG_ERROR, "active_parameter_set_id %d invalid\n", active_seq_parameter_set_id);
281 return AVERROR_INVALIDDATA;
283 s->active_seq_parameter_set_id = active_seq_parameter_set_id;
285 for (i = 1; i <= num_sps_ids_minus1; i++)
286 get_ue_golomb_long(gb); // active_seq_parameter_set_id[i]
291 static int decode_nal_sei_prefix(GetBitContext *gb, HEVCSEIContext *s, const HEVCParamSets *ps,
292 int type, int size, void *logctx)
295 case 256: // Mismatched value from HM 8.1
296 return decode_nal_sei_decoded_picture_hash(&s->picture_hash, gb);
297 case SEI_TYPE_FRAME_PACKING:
298 return decode_nal_sei_frame_packing_arrangement(&s->frame_packing, gb);
299 case SEI_TYPE_DISPLAY_ORIENTATION:
300 return decode_nal_sei_display_orientation(&s->display_orientation, gb);
301 case SEI_TYPE_PICTURE_TIMING:
303 int ret = decode_pic_timing(s, gb, ps, logctx);
304 av_log(logctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
305 skip_bits(gb, 8 * size);
308 case SEI_TYPE_MASTERING_DISPLAY_INFO:
309 return decode_nal_sei_mastering_display_info(&s->mastering_display, gb);
310 case SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO:
311 return decode_nal_sei_content_light_info(&s->content_light, gb);
312 case SEI_TYPE_ACTIVE_PARAMETER_SETS:
313 active_parameter_sets(s, gb, logctx);
314 av_log(logctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
316 case SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35:
317 return decode_nal_sei_user_data_registered_itu_t_t35(s, gb, size);
319 av_log(logctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
320 skip_bits_long(gb, 8 * size);
325 static int decode_nal_sei_suffix(GetBitContext *gb, HEVCSEIContext *s,
326 int type, int size, void *logctx)
329 case SEI_TYPE_DECODED_PICTURE_HASH:
330 return decode_nal_sei_decoded_picture_hash(&s->picture_hash, gb);
332 av_log(logctx, AV_LOG_DEBUG, "Skipped SUFFIX SEI %d\n", type);
333 skip_bits_long(gb, 8 * size);
338 static int decode_nal_sei_message(GetBitContext *gb, HEVCSEIContext *s,
339 const HEVCParamSets *ps, int nal_unit_type,
342 int payload_type = 0;
343 int payload_size = 0;
345 av_log(logctx, AV_LOG_DEBUG, "Decoding SEI\n");
347 while (byte == 0xFF) {
348 byte = get_bits(gb, 8);
349 payload_type += byte;
352 while (byte == 0xFF) {
353 byte = get_bits(gb, 8);
354 payload_size += byte;
356 if (nal_unit_type == HEVC_NAL_SEI_PREFIX) {
357 return decode_nal_sei_prefix(gb, s, ps, payload_type, payload_size, logctx);
358 } else { /* nal_unit_type == NAL_SEI_SUFFIX */
359 return decode_nal_sei_suffix(gb, s, payload_type, payload_size, logctx);
363 static int more_rbsp_data(GetBitContext *gb)
365 return get_bits_left(gb) > 0 && show_bits(gb, 8) != 0x80;
368 int ff_hevc_decode_nal_sei(GetBitContext *gb, void *logctx, HEVCSEIContext *s,
369 const HEVCParamSets *ps, int type)
374 ret = decode_nal_sei_message(gb, s, ps, type, logctx);
376 return(AVERROR(ENOMEM));
377 } while (more_rbsp_data(gb));
381 void ff_hevc_reset_sei(HEVCSEIContext *s)
383 s->a53_caption.a53_caption_size = 0;
384 av_freep(&s->a53_caption.a53_caption);