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(HEVCContext *s)
60 //uint16_t picture_crc;
61 //uint32_t picture_checksum;
62 GetBitContext *gb = &s->HEVClc->gb;
63 hash_type = get_bits(gb, 8);
65 for (cIdx = 0; cIdx < 3/*((s->sps->chroma_format_idc == 0) ? 1 : 3)*/; cIdx++) {
68 for (i = 0; i < 16; i++)
69 s->md5[cIdx][i] = get_bits(gb, 8);
70 } else if (hash_type == 1) {
71 // picture_crc = get_bits(gb, 16);
73 } else if (hash_type == 2) {
74 // picture_checksum = get_bits_long(gb, 32);
81 static int decode_nal_sei_frame_packing_arrangement(HEVCContext *s)
83 GetBitContext *gb = &s->HEVClc->gb;
85 get_ue_golomb(gb); // frame_packing_arrangement_id
86 s->sei_frame_packing_present = !get_bits1(gb);
88 if (s->sei_frame_packing_present) {
89 s->frame_packing_arrangement_type = get_bits(gb, 7);
90 s->quincunx_subsampling = get_bits1(gb);
91 s->content_interpretation_type = get_bits(gb, 6);
93 // the following skips spatial_flipping_flag frame0_flipped_flag
94 // field_views_flag current_frame_is_frame0_flag
95 // frame0_self_contained_flag frame1_self_contained_flag
98 if (!s->quincunx_subsampling && s->frame_packing_arrangement_type != 5)
99 skip_bits(gb, 16); // frame[01]_grid_position_[xy]
100 skip_bits(gb, 8); // frame_packing_arrangement_reserved_byte
101 skip_bits1(gb); // frame_packing_arrangement_persistance_flag
103 skip_bits1(gb); // upsampled_aspect_ratio_flag
107 static int decode_nal_sei_display_orientation(HEVCContext *s)
109 GetBitContext *gb = &s->HEVClc->gb;
111 s->sei_display_orientation_present = !get_bits1(gb);
113 if (s->sei_display_orientation_present) {
114 s->sei_hflip = get_bits1(gb); // hor_flip
115 s->sei_vflip = get_bits1(gb); // ver_flip
117 s->sei_anticlockwise_rotation = get_bits(gb, 16);
118 skip_bits1(gb); // display_orientation_persistence_flag
124 static int decode_pic_timing(HEVCContext *s)
126 GetBitContext *gb = &s->HEVClc->gb;
129 if (!s->ps.sps_list[s->active_seq_parameter_set_id])
130 return(AVERROR(ENOMEM));
131 sps = (HEVCSPS*)s->ps.sps_list[s->active_seq_parameter_set_id]->data;
133 if (sps->vui.frame_field_info_present_flag) {
134 int pic_struct = get_bits(gb, 4);
135 s->picture_struct = AV_PICTURE_STRUCTURE_UNKNOWN;
136 if (pic_struct == 2) {
137 av_log(s->avctx, AV_LOG_DEBUG, "BOTTOM Field\n");
138 s->picture_struct = AV_PICTURE_STRUCTURE_BOTTOM_FIELD;
139 } else if (pic_struct == 1) {
140 av_log(s->avctx, AV_LOG_DEBUG, "TOP Field\n");
141 s->picture_struct = AV_PICTURE_STRUCTURE_TOP_FIELD;
143 get_bits(gb, 2); // source_scan_type
144 get_bits(gb, 1); // duplicate_flag
149 static int decode_registered_user_data_closed_caption(HEVCContext *s, int size)
152 int user_data_type_code;
156 GetBitContext *gb = &s->HEVClc->gb;
159 return AVERROR(EINVAL);
161 user_data_type_code = get_bits(gb, 8);
162 if (user_data_type_code == 0x3) {
163 skip_bits(gb, 1); // reserved
165 flag = get_bits(gb, 1); // process_cc_data_flag
168 cc_count = get_bits(gb, 5);
169 skip_bits(gb, 8); // reserved
172 if (cc_count && size >= cc_count * 3) {
173 av_freep(&s->a53_caption);
174 s->a53_caption_size = cc_count * 3;
176 s->a53_caption = av_malloc(s->a53_caption_size);
178 return(AVERROR(ENOMEM));
180 for (i = 0; i < s->a53_caption_size; i++) {
181 s->a53_caption[i++] = get_bits(gb, 8);
183 skip_bits(gb, 8); // marker_bits
187 for (i = 0; i < size - 1; i++)
194 static int decode_nal_sei_user_data_registered_itu_t_t35(HEVCContext *s, int size)
196 uint32_t country_code;
197 uint32_t user_identifier;
199 GetBitContext *gb = &s->HEVClc->gb;
202 return AVERROR(EINVAL);
205 country_code = get_bits(gb, 8);
206 if (country_code == 0xFF) {
214 user_identifier = get_bits_long(gb, 32);
216 switch (user_identifier) {
217 case MKBETAG('G', 'A', '9', '4'):
218 return decode_registered_user_data_closed_caption(s, size);
220 skip_bits_long(gb, size * 8);
226 static int active_parameter_sets(HEVCContext *s)
228 GetBitContext *gb = &s->HEVClc->gb;
229 int num_sps_ids_minus1;
231 unsigned active_seq_parameter_set_id;
233 get_bits(gb, 4); // active_video_parameter_set_id
234 get_bits(gb, 1); // self_contained_cvs_flag
235 get_bits(gb, 1); // num_sps_ids_minus1
236 num_sps_ids_minus1 = get_ue_golomb_long(gb); // num_sps_ids_minus1
238 if (num_sps_ids_minus1 < 0 || num_sps_ids_minus1 > 15) {
239 av_log(s->avctx, AV_LOG_ERROR, "num_sps_ids_minus1 %d invalid\n", num_sps_ids_minus1);
240 return AVERROR_INVALIDDATA;
243 active_seq_parameter_set_id = get_ue_golomb_long(gb);
244 if (active_seq_parameter_set_id >= MAX_SPS_COUNT) {
245 av_log(s->avctx, AV_LOG_ERROR, "active_parameter_set_id %d invalid\n", active_seq_parameter_set_id);
246 return AVERROR_INVALIDDATA;
248 s->active_seq_parameter_set_id = active_seq_parameter_set_id;
250 for (i = 1; i <= num_sps_ids_minus1; i++)
251 get_ue_golomb_long(gb); // active_seq_parameter_set_id[i]
256 static int decode_nal_sei_prefix(HEVCContext *s, int type, int size)
258 GetBitContext *gb = &s->HEVClc->gb;
261 case 256: // Mismatched value from HM 8.1
262 return decode_nal_sei_decoded_picture_hash(s);
263 case SEI_TYPE_FRAME_PACKING:
264 return decode_nal_sei_frame_packing_arrangement(s);
265 case SEI_TYPE_DISPLAY_ORIENTATION:
266 return decode_nal_sei_display_orientation(s);
267 case SEI_TYPE_PICTURE_TIMING:
269 int ret = decode_pic_timing(s);
270 av_log(s->avctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
271 skip_bits(gb, 8 * size);
274 case SEI_TYPE_ACTIVE_PARAMETER_SETS:
275 active_parameter_sets(s);
276 av_log(s->avctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
278 case SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35:
279 return decode_nal_sei_user_data_registered_itu_t_t35(s, size);
281 av_log(s->avctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
282 skip_bits_long(gb, 8 * size);
287 static int decode_nal_sei_suffix(HEVCContext *s, int type, int size)
289 GetBitContext *gb = &s->HEVClc->gb;
292 case SEI_TYPE_DECODED_PICTURE_HASH:
293 return decode_nal_sei_decoded_picture_hash(s);
295 av_log(s->avctx, AV_LOG_DEBUG, "Skipped SUFFIX SEI %d\n", type);
296 skip_bits_long(gb, 8 * size);
301 static int decode_nal_sei_message(HEVCContext *s)
303 GetBitContext *gb = &s->HEVClc->gb;
305 int payload_type = 0;
306 int payload_size = 0;
308 av_log(s->avctx, AV_LOG_DEBUG, "Decoding SEI\n");
310 while (byte == 0xFF) {
311 byte = get_bits(gb, 8);
312 payload_type += byte;
315 while (byte == 0xFF) {
316 byte = get_bits(gb, 8);
317 payload_size += byte;
319 if (s->nal_unit_type == NAL_SEI_PREFIX) {
320 return decode_nal_sei_prefix(s, payload_type, payload_size);
321 } else { /* nal_unit_type == NAL_SEI_SUFFIX */
322 return decode_nal_sei_suffix(s, payload_type, payload_size);
327 static int more_rbsp_data(GetBitContext *gb)
329 return get_bits_left(gb) > 0 && show_bits(gb, 8) != 0x80;
332 int ff_hevc_decode_nal_sei(HEVCContext *s)
337 ret = decode_nal_sei_message(s);
339 return(AVERROR(ENOMEM));
340 } while (more_rbsp_data(&s->HEVClc->gb));