GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/hevc_sei.c Lines: 178 282 63.1 %
Date: 2021-04-20 15:25:36 Branches: 79 139 56.8 %

Line Branch Exec Source
1
/*
2
 * HEVC Supplementary Enhancement Information messages
3
 *
4
 * Copyright (C) 2012 - 2013 Guillaume Martres
5
 * Copyright (C) 2012 - 2013 Gildas Cocherel
6
 * Copyright (C) 2013 Vittorio Giovara
7
 *
8
 * This file is part of FFmpeg.
9
 *
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.
14
 *
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.
19
 *
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
23
 */
24
25
#include "atsc_a53.h"
26
#include "dynamic_hdr10_plus.h"
27
#include "golomb.h"
28
#include "hevc_ps.h"
29
#include "hevc_sei.h"
30
31
6848
static int decode_nal_sei_decoded_picture_hash(HEVCSEIPictureHash *s, GetBitContext *gb)
32
{
33
    int cIdx, i;
34
    uint8_t hash_type;
35
    //uint16_t picture_crc;
36
    //uint32_t picture_checksum;
37
6848
    hash_type = get_bits(gb, 8);
38
39
27392
    for (cIdx = 0; cIdx < 3/*((s->sps->chroma_format_idc == 0) ? 1 : 3)*/; cIdx++) {
40
20544
        if (hash_type == 0) {
41
19497
            s->is_md5 = 1;
42
331449
            for (i = 0; i < 16; i++)
43
311952
                s->md5[cIdx][i] = get_bits(gb, 8);
44
1047
        } else if (hash_type == 1) {
45
            // picture_crc = get_bits(gb, 16);
46
291
            skip_bits(gb, 16);
47
756
        } else if (hash_type == 2) {
48
            // picture_checksum = get_bits_long(gb, 32);
49
756
            skip_bits(gb, 32);
50
        }
51
    }
52
6848
    return 0;
53
}
54
55
3
static int decode_nal_sei_mastering_display_info(HEVCSEIMasteringDisplay *s, GetBitContext *gb)
56
{
57
    int i;
58
    // Mastering primaries
59
12
    for (i = 0; i < 3; i++) {
60
9
        s->display_primaries[i][0] = get_bits(gb, 16);
61
9
        s->display_primaries[i][1] = get_bits(gb, 16);
62
    }
63
    // White point (x, y)
64
3
    s->white_point[0] = get_bits(gb, 16);
65
3
    s->white_point[1] = get_bits(gb, 16);
66
67
    // Max and min luminance of mastering display
68
3
    s->max_luminance = get_bits_long(gb, 32);
69
3
    s->min_luminance = get_bits_long(gb, 32);
70
71
    // As this SEI message comes before the first frame that references it,
72
    // initialize the flag to 2 and decrement on IRAP access unit so it
73
    // persists for the coded video sequence (e.g., between two IRAPs)
74
3
    s->present = 2;
75
3
    return 0;
76
}
77
78
3
static int decode_nal_sei_content_light_info(HEVCSEIContentLight *s, GetBitContext *gb)
79
{
80
    // Max and average light levels
81
3
    s->max_content_light_level     = get_bits(gb, 16);
82
3
    s->max_pic_average_light_level = get_bits(gb, 16);
83
    // As this SEI message comes before the first frame that references it,
84
    // initialize the flag to 2 and decrement on IRAP access unit so it
85
    // persists for the coded video sequence (e.g., between two IRAPs)
86
3
    s->present = 2;
87
3
    return  0;
88
}
89
90
static int decode_nal_sei_frame_packing_arrangement(HEVCSEIFramePacking *s, GetBitContext *gb)
91
{
92
    get_ue_golomb_long(gb);             // frame_packing_arrangement_id
93
    s->present = !get_bits1(gb);
94
95
    if (s->present) {
96
        s->arrangement_type               = get_bits(gb, 7);
97
        s->quincunx_subsampling           = get_bits1(gb);
98
        s->content_interpretation_type    = get_bits(gb, 6);
99
100
        // spatial_flipping_flag, frame0_flipped_flag, field_views_flag
101
        skip_bits(gb, 3);
102
        s->current_frame_is_frame0_flag = get_bits1(gb);
103
        // frame0_self_contained_flag, frame1_self_contained_flag
104
        skip_bits(gb, 2);
105
106
        if (!s->quincunx_subsampling && s->arrangement_type != 5)
107
            skip_bits(gb, 16);  // frame[01]_grid_position_[xy]
108
        skip_bits(gb, 8);       // frame_packing_arrangement_reserved_byte
109
        skip_bits1(gb);         // frame_packing_arrangement_persistence_flag
110
    }
111
    skip_bits1(gb);             // upsampled_aspect_ratio_flag
112
    return 0;
113
}
114
115
static int decode_nal_sei_display_orientation(HEVCSEIDisplayOrientation *s, GetBitContext *gb)
116
{
117
    s->present = !get_bits1(gb);
118
119
    if (s->present) {
120
        s->hflip = get_bits1(gb);     // hor_flip
121
        s->vflip = get_bits1(gb);     // ver_flip
122
123
        s->anticlockwise_rotation = get_bits(gb, 16);
124
        skip_bits1(gb);     // display_orientation_persistence_flag
125
    }
126
127
    return 0;
128
}
129
130
1204
static int decode_nal_sei_pic_timing(HEVCSEI *s, GetBitContext *gb, const HEVCParamSets *ps,
131
                                     void *logctx, int size)
132
{
133
1204
    HEVCSEIPictureTiming *h = &s->picture_timing;
134
    HEVCSPS *sps;
135
136
1204
    if (!ps->sps_list[s->active_seq_parameter_set_id])
137
44
        return(AVERROR(ENOMEM));
138
1160
    sps = (HEVCSPS*)ps->sps_list[s->active_seq_parameter_set_id]->data;
139
140
1160
    if (sps->vui.frame_field_info_present_flag) {
141
677
        int pic_struct = get_bits(gb, 4);
142
677
        h->picture_struct = AV_PICTURE_STRUCTURE_UNKNOWN;
143

677
        if (pic_struct == 2 || pic_struct == 10 || pic_struct == 12) {
144
10
            av_log(logctx, AV_LOG_DEBUG, "BOTTOM Field\n");
145
10
            h->picture_struct = AV_PICTURE_STRUCTURE_BOTTOM_FIELD;
146

667
        } else if (pic_struct == 1 || pic_struct == 9 || pic_struct == 11) {
147
11
            av_log(logctx, AV_LOG_DEBUG, "TOP Field\n");
148
11
            h->picture_struct = AV_PICTURE_STRUCTURE_TOP_FIELD;
149
656
        } else if (pic_struct == 7) {
150
            av_log(logctx, AV_LOG_DEBUG, "Frame/Field Doubling\n");
151
            h->picture_struct = HEVC_SEI_PIC_STRUCT_FRAME_DOUBLING;
152
656
        } else if (pic_struct == 8) {
153
            av_log(logctx, AV_LOG_DEBUG, "Frame/Field Tripling\n");
154
            h->picture_struct = HEVC_SEI_PIC_STRUCT_FRAME_TRIPLING;
155
        }
156
677
        get_bits(gb, 2);                   // source_scan_type
157
677
        get_bits(gb, 1);                   // duplicate_flag
158
677
        skip_bits1(gb);
159
677
        size--;
160
    }
161
1160
    skip_bits_long(gb, 8 * size);
162
163
1160
    return 0;
164
}
165
166
static int decode_registered_user_data_closed_caption(HEVCSEIA53Caption *s, GetBitContext *gb,
167
                                                      int size)
168
{
169
    int ret;
170
171
    if (size < 3)
172
       return AVERROR_INVALIDDATA;
173
174
    ret = ff_parse_a53_cc(&s->buf_ref, gb->buffer + get_bits_count(gb) / 8, size);
175
176
    if (ret < 0)
177
        return ret;
178
179
    skip_bits_long(gb, size * 8);
180
181
    return 0;
182
}
183
184
9
static int decode_nal_sei_user_data_unregistered(HEVCSEIUnregistered *s, GetBitContext *gb,
185
                                                      int size)
186
{
187
    AVBufferRef *buf_ref, **tmp;
188
189

9
    if (size < 16 || size >= INT_MAX - 1)
190
       return AVERROR_INVALIDDATA;
191
192
9
    tmp = av_realloc_array(s->buf_ref, s->nb_buf_ref + 1, sizeof(*s->buf_ref));
193
9
    if (!tmp)
194
        return AVERROR(ENOMEM);
195
9
    s->buf_ref = tmp;
196
197
9
    buf_ref = av_buffer_alloc(size + 1);
198
9
    if (!buf_ref)
199
        return AVERROR(ENOMEM);
200
201
12059
    for (int i = 0; i < size; i++)
202
12050
        buf_ref->data[i] = get_bits(gb, 8);
203
9
    buf_ref->data[size] = 0;
204
9
    buf_ref->size = size;
205
9
    s->buf_ref[s->nb_buf_ref++] = buf_ref;
206
207
9
    return 0;
208
}
209
210
3
static int decode_registered_user_data_dynamic_hdr_plus(HEVCSEIDynamicHDRPlus *s,
211
                                                        GetBitContext *gb, int size)
212
{
213
    size_t meta_size;
214
    int err;
215
3
    AVDynamicHDRPlus *metadata = av_dynamic_hdr_plus_alloc(&meta_size);
216
3
    if (!metadata)
217
        return AVERROR(ENOMEM);
218
219
3
    err = ff_parse_itu_t_t35_to_dynamic_hdr10_plus(metadata,
220
3
                                                   gb->buffer + get_bits_count(gb) / 8, size);
221
3
    if (err < 0) {
222
        av_free(metadata);
223
        return err;
224
    }
225
226
3
    av_buffer_unref(&s->info);
227
3
    s->info = av_buffer_create((uint8_t *)metadata, meta_size, NULL, NULL, 0);
228
3
    if (!s->info) {
229
        av_free(metadata);
230
        return AVERROR(ENOMEM);
231
    }
232
233
3
    skip_bits_long(gb, size * 8);
234
235
3
    return 0;
236
}
237
238
67
static int decode_nal_sei_user_data_registered_itu_t_t35(HEVCSEI *s, GetBitContext *gb,
239
                                                         void *logctx, int size)
240
{
241
    int country_code, provider_code;
242
243
67
    if (size < 3)
244
        return AVERROR_INVALIDDATA;
245
67
    size -= 3;
246
247
67
    country_code = get_bits(gb, 8);
248
67
    if (country_code == 0xFF) {
249
        if (size < 1)
250
            return AVERROR_INVALIDDATA;
251
252
        skip_bits(gb, 8);
253
        size--;
254
    }
255
256
67
    if (country_code != 0xB5) { // usa_country_code
257
        av_log(logctx, AV_LOG_VERBOSE,
258
               "Unsupported User Data Registered ITU-T T35 SEI message (country_code = %d)\n",
259
               country_code);
260
        goto end;
261
    }
262
263
67
    provider_code = get_bits(gb, 16);
264
265
67
    switch (provider_code) {
266
3
    case 0x3C: { // smpte_provider_code
267
        // A/341 Amendment - 2094-40
268
3
        const uint16_t smpte2094_40_provider_oriented_code = 0x0001;
269
3
        const uint8_t smpte2094_40_application_identifier = 0x04;
270
        uint16_t provider_oriented_code;
271
        uint8_t application_identifier;
272
273
3
        if (size < 3)
274
            return AVERROR_INVALIDDATA;
275
3
        size -= 3;
276
277
3
        provider_oriented_code = get_bits(gb, 16);
278
3
        application_identifier = get_bits(gb, 8);
279

3
        if (provider_oriented_code == smpte2094_40_provider_oriented_code &&
280
            application_identifier == smpte2094_40_application_identifier) {
281
3
            return decode_registered_user_data_dynamic_hdr_plus(&s->dynamic_hdr_plus, gb, size);
282
        }
283
        break;
284
    }
285
64
    case 0x31: { // atsc_provider_code
286
        uint32_t user_identifier;
287
288
64
        if (size < 4)
289
            return AVERROR_INVALIDDATA;
290
64
        size -= 4;
291
292
64
        user_identifier = get_bits_long(gb, 32);
293
        switch (user_identifier) {
294
        case MKBETAG('G', 'A', '9', '4'):
295
            return decode_registered_user_data_closed_caption(&s->a53_caption, gb, size);
296
64
        default:
297
64
            av_log(logctx, AV_LOG_VERBOSE,
298
                   "Unsupported User Data Registered ITU-T T35 SEI message (atsc user_identifier = 0x%04x)\n",
299
                   user_identifier);
300
64
            break;
301
        }
302
64
        break;
303
    }
304
    default:
305
        av_log(logctx, AV_LOG_VERBOSE,
306
               "Unsupported User Data Registered ITU-T T35 SEI message (provider_code = %d)\n",
307
               provider_code);
308
        break;
309
    }
310
311
64
end:
312
64
    skip_bits_long(gb, size * 8);
313
64
    return 0;
314
}
315
316
30
static int decode_nal_sei_active_parameter_sets(HEVCSEI *s, GetBitContext *gb, void *logctx)
317
{
318
    int num_sps_ids_minus1;
319
    int i;
320
    unsigned active_seq_parameter_set_id;
321
322
30
    get_bits(gb, 4); // active_video_parameter_set_id
323
30
    get_bits(gb, 1); // self_contained_cvs_flag
324
30
    get_bits(gb, 1); // num_sps_ids_minus1
325
30
    num_sps_ids_minus1 = get_ue_golomb_long(gb); // num_sps_ids_minus1
326
327

30
    if (num_sps_ids_minus1 < 0 || num_sps_ids_minus1 > 15) {
328
        av_log(logctx, AV_LOG_ERROR, "num_sps_ids_minus1 %d invalid\n", num_sps_ids_minus1);
329
        return AVERROR_INVALIDDATA;
330
    }
331
332
30
    active_seq_parameter_set_id = get_ue_golomb_long(gb);
333
30
    if (active_seq_parameter_set_id >= HEVC_MAX_SPS_COUNT) {
334
        av_log(logctx, AV_LOG_ERROR, "active_parameter_set_id %d invalid\n", active_seq_parameter_set_id);
335
        return AVERROR_INVALIDDATA;
336
    }
337
30
    s->active_seq_parameter_set_id = active_seq_parameter_set_id;
338
339
30
    for (i = 1; i <= num_sps_ids_minus1; i++)
340
        get_ue_golomb_long(gb); // active_seq_parameter_set_id[i]
341
342
30
    return 0;
343
}
344
345
static int decode_nal_sei_alternative_transfer(HEVCSEIAlternativeTransfer *s, GetBitContext *gb)
346
{
347
    s->present = 1;
348
    s->preferred_transfer_characteristics = get_bits(gb, 8);
349
    return 0;
350
}
351
352
64
static int decode_nal_sei_timecode(HEVCSEITimeCode *s, GetBitContext *gb)
353
{
354
64
    s->num_clock_ts = get_bits(gb, 2);
355
356
128
    for (int i = 0; i < s->num_clock_ts; i++) {
357
64
        s->clock_timestamp_flag[i] =  get_bits(gb, 1);
358
359
64
        if (s->clock_timestamp_flag[i]) {
360
            s->units_field_based_flag[i] = get_bits(gb, 1);
361
            s->counting_type[i]          = get_bits(gb, 5);
362
            s->full_timestamp_flag[i]    = get_bits(gb, 1);
363
            s->discontinuity_flag[i]     = get_bits(gb, 1);
364
            s->cnt_dropped_flag[i]       = get_bits(gb, 1);
365
366
            s->n_frames[i]               = get_bits(gb, 9);
367
368
            if (s->full_timestamp_flag[i]) {
369
                s->seconds_value[i]      = av_clip(get_bits(gb, 6), 0, 59);
370
                s->minutes_value[i]      = av_clip(get_bits(gb, 6), 0, 59);
371
                s->hours_value[i]        = av_clip(get_bits(gb, 5), 0, 23);
372
            } else {
373
                s->seconds_flag[i] = get_bits(gb, 1);
374
                if (s->seconds_flag[i]) {
375
                    s->seconds_value[i] = av_clip(get_bits(gb, 6), 0, 59);
376
                    s->minutes_flag[i]  = get_bits(gb, 1);
377
                    if (s->minutes_flag[i]) {
378
                        s->minutes_value[i] = av_clip(get_bits(gb, 6), 0, 59);
379
                        s->hours_flag[i] =  get_bits(gb, 1);
380
                        if (s->hours_flag[i]) {
381
                            s->hours_value[i] = av_clip(get_bits(gb, 5), 0, 23);
382
                        }
383
                    }
384
                }
385
            }
386
387
            s->time_offset_length[i] = get_bits(gb, 5);
388
            if (s->time_offset_length[i] > 0) {
389
                s->time_offset_value[i] = get_bits(gb, s->time_offset_length[i]);
390
            }
391
        }
392
    }
393
394
64
    s->present = 1;
395
64
    return 0;
396
}
397
398
399
1470
static int decode_nal_sei_prefix(GetBitContext *gb, void *logctx, HEVCSEI *s,
400
                                 const HEVCParamSets *ps, int type, int size)
401
{
402



1470
    switch (type) {
403
    case 256:  // Mismatched value from HM 8.1
404
        return decode_nal_sei_decoded_picture_hash(&s->picture_hash, gb);
405
    case SEI_TYPE_FRAME_PACKING_ARRANGEMENT:
406
        return decode_nal_sei_frame_packing_arrangement(&s->frame_packing, gb);
407
    case SEI_TYPE_DISPLAY_ORIENTATION:
408
        return decode_nal_sei_display_orientation(&s->display_orientation, gb);
409
1204
    case SEI_TYPE_PIC_TIMING:
410
1204
        return decode_nal_sei_pic_timing(s, gb, ps, logctx, size);
411
3
    case SEI_TYPE_MASTERING_DISPLAY_COLOUR_VOLUME:
412
3
        return decode_nal_sei_mastering_display_info(&s->mastering_display, gb);
413
3
    case SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO:
414
3
        return decode_nal_sei_content_light_info(&s->content_light, gb);
415
30
    case SEI_TYPE_ACTIVE_PARAMETER_SETS:
416
30
        return decode_nal_sei_active_parameter_sets(s, gb, logctx);
417
67
    case SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35:
418
67
        return decode_nal_sei_user_data_registered_itu_t_t35(s, gb, logctx, size);
419
9
    case SEI_TYPE_USER_DATA_UNREGISTERED:
420
9
        return decode_nal_sei_user_data_unregistered(&s->unregistered, gb, size);
421
    case SEI_TYPE_ALTERNATIVE_TRANSFER_CHARACTERISTICS:
422
        return decode_nal_sei_alternative_transfer(&s->alternative_transfer, gb);
423
64
    case SEI_TYPE_TIME_CODE:
424
64
        return decode_nal_sei_timecode(&s->timecode, gb);
425
90
    default:
426
90
        av_log(logctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
427
90
        skip_bits_long(gb, 8 * size);
428
90
        return 0;
429
    }
430
}
431
432
6848
static int decode_nal_sei_suffix(GetBitContext *gb, void *logctx, HEVCSEI *s,
433
                                 int type, int size)
434
{
435
6848
    switch (type) {
436
6848
    case SEI_TYPE_DECODED_PICTURE_HASH:
437
6848
        return decode_nal_sei_decoded_picture_hash(&s->picture_hash, gb);
438
    default:
439
        av_log(logctx, AV_LOG_DEBUG, "Skipped SUFFIX SEI %d\n", type);
440
        skip_bits_long(gb, 8 * size);
441
        return 0;
442
    }
443
}
444
445
8382
static int decode_nal_sei_message(GetBitContext *gb, void *logctx, HEVCSEI *s,
446
                                  const HEVCParamSets *ps, int nal_unit_type)
447
{
448
8382
    int payload_type = 0;
449
8382
    int payload_size = 0;
450
8382
    int byte = 0xFF;
451
8382
    av_log(logctx, AV_LOG_DEBUG, "Decoding SEI\n");
452
453
16700
    while (byte == 0xFF) {
454

8382
        if (get_bits_left(gb) < 16 || payload_type > INT_MAX - 255)
455
64
            return AVERROR_INVALIDDATA;
456
8318
        byte          = get_bits(gb, 8);
457
8318
        payload_type += byte;
458
    }
459
8318
    byte = 0xFF;
460
16679
    while (byte == 0xFF) {
461
8361
        if (get_bits_left(gb) < 8 + 8LL*payload_size)
462
            return AVERROR_INVALIDDATA;
463
8361
        byte          = get_bits(gb, 8);
464
8361
        payload_size += byte;
465
    }
466
8318
    if (get_bits_left(gb) < 8LL*payload_size)
467
        return AVERROR_INVALIDDATA;
468
8318
    if (nal_unit_type == HEVC_NAL_SEI_PREFIX) {
469
1470
        return decode_nal_sei_prefix(gb, logctx, s, ps, payload_type, payload_size);
470
    } else { /* nal_unit_type == NAL_SEI_SUFFIX */
471
6848
        return decode_nal_sei_suffix(gb, logctx, s, payload_type, payload_size);
472
    }
473
}
474
475
8274
static int more_rbsp_data(GetBitContext *gb)
476
{
477

8274
    return get_bits_left(gb) > 0 && show_bits(gb, 8) != 0x80;
478
}
479
480
8382
int ff_hevc_decode_nal_sei(GetBitContext *gb, void *logctx, HEVCSEI *s,
481
                           const HEVCParamSets *ps, int type)
482
{
483
    int ret;
484
485
    do {
486
8382
        ret = decode_nal_sei_message(gb, logctx, s, ps, type);
487
8382
        if (ret < 0)
488
108
            return ret;
489
8274
    } while (more_rbsp_data(gb));
490
8201
    return 1;
491
}
492
493
12409
void ff_hevc_reset_sei(HEVCSEI *s)
494
{
495
12409
    av_buffer_unref(&s->a53_caption.buf_ref);
496
497
12412
    for (int i = 0; i < s->unregistered.nb_buf_ref; i++)
498
3
        av_buffer_unref(&s->unregistered.buf_ref[i]);
499
12409
    s->unregistered.nb_buf_ref = 0;
500
12409
    av_freep(&s->unregistered.buf_ref);
501
12409
    av_buffer_unref(&s->dynamic_hdr_plus.info);
502
12409
}