This file is indexed.

/usr/include/bitstream/scte/35.h is in libbitstream-dev 1.1-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
/*****************************************************************************
 * 35.h: SCTE 35 Digital Program Insertion Cueing Message for Cable
 *****************************************************************************
 * Copyright (C) 2015 VideoLAN
 *
 * Authors: Christophe Massiot <massiot@via.ecp.fr>
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject
 * to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *****************************************************************************/

/*
 * Normative references:
 *  - SCTE 35 2013 (Digital Program Insertion Cueing Message for Cable)
 */

#ifndef __BITSTREAM_SCTE_35_H__
#define __BITSTREAM_SCTE_35_H__

#include <bitstream/common.h>
#include <bitstream/mpeg/psi/psi.h>
#include <bitstream/mpeg/psi/descriptors.h>

#ifdef __cplusplus
extern "C"
{
#endif

/*****************************************************************************
 * Splice Information Table
 *****************************************************************************/
#define SCTE35_TABLE_ID                 0xfc
#define SCTE35_HEADER_SIZE              (PSI_HEADER_SIZE + 11)
#define SCTE35_HEADER2_SIZE             2

static inline void scte35_init(uint8_t *p_scte35)
{
    psi_set_tableid(p_scte35, SCTE35_TABLE_ID);
    psi_init(p_scte35, false);
    p_scte35[1] &= ~0x40; /* private indicator */
    p_scte35[3] = 0;
    p_scte35[4] = 0;
    p_scte35[9] = 0;
    p_scte35[10] = 0xff;
    p_scte35[11] = 0xf0;
}

static inline uint8_t scte35_get_protocol(const uint8_t *p_scte35)
{
    return p_scte35[3];
}

static inline void scte35_set_protocol(uint8_t *p_scte35, uint8_t i_version)
{
    p_scte35[3] = i_version;
}

static inline bool scte35_is_encrypted(const uint8_t *p_scte35)
{
    return !!(p_scte35[4] & 0x80);
}

static inline void scte35_set_encrypted(uint8_t *p_scte35, bool b_encrypted)
{
    if (b_encrypted)
        p_scte35[4] |= 0x80;
    else
        p_scte35[4] &= ~0x80;
}

static inline uint64_t scte35_get_pts_adjustment(const uint8_t *p_scte35)
{
    return ((uint64_t)(p_scte35[4] & 0x1) << 32) |
           ((uint64_t)p_scte35[5] << 24) | ((uint64_t)p_scte35[6] << 16) |
           ((uint64_t)p_scte35[7] << 8) | (uint64_t)p_scte35[8];
}

static inline void scte35_set_pts_adjustment(uint8_t *p_scte35,
                                             uint64_t i_adjustment)
{
    p_scte35[4] &= ~0x1;
    p_scte35[4] |= (i_adjustment >> 32) & 0x1;
    p_scte35[5] = (i_adjustment >> 24) & 0xff;
    p_scte35[6] = (i_adjustment >> 16) & 0xff;
    p_scte35[7] = (i_adjustment >> 8) & 0xff;
    p_scte35[8] = i_adjustment & 0xff;
}

static inline uint16_t scte35_get_command_length(const uint8_t *p_scte35)
{
    return ((p_scte35[11] & 0xf) << 8) | p_scte35[12];
}

static inline void scte35_set_command_length(uint8_t *p_scte35,
                                             uint16_t i_length)
{
    p_scte35[11] &= ~0xf;
    p_scte35[11] |= (i_length >> 8) & 0xf;
    p_scte35[12] = i_length & 0xff;
}

static inline uint8_t scte35_get_command_type(const uint8_t *p_scte35)
{
    return p_scte35[13];
}

static inline void scte35_set_command_type(uint8_t *p_scte35, uint8_t i_type)
{
    p_scte35[13] = i_type;
}

static inline uint8_t *scte35_get_command(const uint8_t *p_scte35)
{
    return (uint8_t *)p_scte35 + SCTE35_HEADER_SIZE;
}

static inline uint16_t scte35_get_desclength(const uint8_t *p_scte35)
{
    uint16_t i_command_length = scte35_get_command_length(p_scte35);
    if (i_command_length == 0xfff)
        return 0;
    const uint8_t *pi_desclength = scte35_get_command(p_scte35) +
                                   i_command_length;
    return (pi_desclength[0] << 8) | pi_desclength[1];
}

static inline void scte35_set_desclength(uint8_t *p_scte35, uint16_t i_length)
{
    uint8_t *pi_desclength = scte35_get_command(p_scte35) +
                             scte35_get_command_length(p_scte35);
    pi_desclength[0] = (i_length >> 8) & 0xff;
    pi_desclength[1] = i_length & 0xff;
}

static inline uint8_t *scte35_get_descl(const uint8_t *p_scte35)
{
    uint16_t i_command_length = scte35_get_command_length(p_scte35);
    if (i_command_length == 0xfff)
        return NULL;
    return scte35_get_command(p_scte35) + i_command_length +
           SCTE35_HEADER2_SIZE;
}

/*****************************************************************************
 * Splice Information Table - splice_time structure
 *****************************************************************************/
#define SCTE35_SPLICE_TIME_HEADER_SIZE              1
#define SCTE35_SPLICE_TIME_TIME_SIZE                4

static inline void scte35_splice_time_init(uint8_t *p_splice_time)
{
    p_splice_time[0] = 0x7f;
}

static inline bool scte35_splice_time_has_time_specified(const uint8_t *p_splice_time)
{
    return !!(p_splice_time[0] & 0x80);
}

static inline void scte35_splice_time_set_time_specified(uint8_t *p_splice_time,
        bool b_time_specified)
{
    if (b_time_specified)
        p_splice_time[0] |= 0x80;
    else
        p_splice_time[0] &= ~0x80;
}

static inline uint64_t scte35_splice_time_get_pts_time(const uint8_t *p_splice_time)
{
    return ((uint64_t)(p_splice_time[0] & 0x1) << 32) |
           ((uint64_t)p_splice_time[1] << 24) |
           ((uint64_t)p_splice_time[2] << 16) |
           ((uint64_t)p_splice_time[3] << 8) |
           (uint64_t)p_splice_time[4];
}

static inline void scte35_splice_time_set_pts_time(uint8_t *p_splice_time,
                                                   uint64_t i_pts_time)
{
    p_splice_time[0] &= ~0x1;
    p_splice_time[0] |= (i_pts_time >> 32) & 0x1;
    p_splice_time[1] = (i_pts_time >> 24) & 0xff;
    p_splice_time[2] = (i_pts_time >> 16) & 0xff;
    p_splice_time[3] = (i_pts_time >> 8) & 0xff;
    p_splice_time[4] = i_pts_time & 0xff;
}

static inline uint8_t scte35_splice_time_size(const uint8_t *p_splice_time)
{
    return SCTE35_SPLICE_TIME_HEADER_SIZE +
        (scte35_splice_time_has_time_specified(p_splice_time) ?
         SCTE35_SPLICE_TIME_TIME_SIZE : 0);
}

/*****************************************************************************
 * Splice Information Table - break_duration structure
 *****************************************************************************/
#define SCTE35_BREAK_DURATION_HEADER_SIZE              5

static inline void scte35_break_duration_init(uint8_t *p_break_duration)
{
    p_break_duration[0] = 0xff;
}

static inline bool scte35_break_duration_has_auto_return(const uint8_t *p_break_duration)
{
    return !!(p_break_duration[0] & 0x80);
}

static inline void scte35_break_duration_set_auto_return(uint8_t *p_break_duration, bool b_auto_return)
{
    if (b_auto_return)
        p_break_duration[0] |= 0x80;
    else
        p_break_duration[0] &= ~0x80;
}

static inline uint64_t scte35_break_duration_get_duration(const uint8_t *p_break_duration)
{
    return ((uint64_t)(p_break_duration[0] & 0x1) << 32) |
           ((uint64_t)p_break_duration[1] << 24) |
           ((uint64_t)p_break_duration[2] << 16) |
           ((uint64_t)p_break_duration[3] << 8) |
           (uint64_t)p_break_duration[4];
}

static inline void scte35_break_duration_set_duration(uint8_t *p_break_duration,
                                                      uint64_t i_duration)
{
    p_break_duration[0] &= ~0x1;
    p_break_duration[0] |= (i_duration >> 32) & 0x1;
    p_break_duration[1] = (i_duration >> 24) & 0xff;
    p_break_duration[2] = (i_duration >> 16) & 0xff;
    p_break_duration[3] = (i_duration >> 8) & 0xff;
    p_break_duration[4] = i_duration & 0xff;
}

/*****************************************************************************
 * Splice Information Table - null command
 *****************************************************************************/
#define SCTE35_NULL_COMMAND                         0
#define SCTE35_NULL_HEADER_SIZE                     0

static inline void scte35_null_init(uint8_t *p_scte35)
{
    scte35_init(p_scte35);
    scte35_set_command_type(p_scte35, SCTE35_NULL_COMMAND);
    scte35_set_command_length(p_scte35, SCTE35_NULL_HEADER_SIZE);
    scte35_set_desclength(p_scte35, 0);
}

static inline bool scte35_null_validate(const uint8_t *p_scte35)
{
    return true;
}

/*****************************************************************************
 * Splice Information Table - schedule command
 *****************************************************************************/
#define SCTE35_SCHEDULE_COMMAND                     4

/* TODO Not implemented (useless) */

/*****************************************************************************
 * Splice Information Table - insert command
 *****************************************************************************/
#define SCTE35_INSERT_COMMAND                       5
#define SCTE35_INSERT_HEADER_SIZE                   5
#define SCTE35_INSERT_HEADER2_SIZE                  1
#define SCTE35_INSERT_COMPONENT_COUNT_SIZE          1
#define SCTE35_INSERT_COMPONENT_HEADER_SIZE         1
#define SCTE35_INSERT_FOOTER_SIZE                   4

static inline void scte35_insert_init(uint8_t *p_scte35, uint16_t i_length)
{
    scte35_init(p_scte35);
    scte35_set_command_type(p_scte35, SCTE35_INSERT_COMMAND);
    scte35_set_command_length(p_scte35,
                              SCTE35_INSERT_HEADER_SIZE + i_length);
    scte35_set_desclength(p_scte35, 0);

    uint8_t *p_command = scte35_get_command(p_scte35);
    p_command[4] = 0xff;
}

static inline uint32_t scte35_insert_get_event_id(const uint8_t *p_scte35)
{
    const uint8_t *p_command = scte35_get_command(p_scte35);
    return ((uint32_t)p_command[0] << 24) | (p_command[1] << 16) |
           (p_command[2] << 8) | p_command[3];
}

static inline void scte35_insert_set_event_id(uint8_t *p_scte35,
                                              uint32_t i_event_id)
{
    uint8_t *p_command = scte35_get_command(p_scte35);
    p_command[0] = (i_event_id >> 24) & 0xff;
    p_command[1] = (i_event_id >> 16) & 0xff;
    p_command[2] = (i_event_id >> 8) & 0xff;
    p_command[3] = i_event_id & 0xff;
}

static inline bool scte35_insert_has_cancel(const uint8_t *p_scte35)
{
    const uint8_t *p_command = scte35_get_command(p_scte35);
    return !!(p_command[4] & 0x80);
}

static inline void scte35_insert_set_cancel(const uint8_t *p_scte35,
                                            bool b_cancel)
{
    uint8_t *p_command = scte35_get_command(p_scte35);
    if (b_cancel)
        p_command[4] |= 0x80;
    else {
        p_command[4] &= ~0x80;
        p_command[5] = 0xff;
    }
}

static inline bool scte35_insert_has_out_of_network(const uint8_t *p_scte35)
{
    const uint8_t *p_command = scte35_get_command(p_scte35);
    return !!(p_command[5] & 0x80);
}

static inline void scte35_insert_set_out_of_network(const uint8_t *p_scte35,
                                                    bool b_out_of_network)
{
    uint8_t *p_command = scte35_get_command(p_scte35);
    if (b_out_of_network)
        p_command[5] |= 0x80;
    else
        p_command[5] &= ~0x80;
}

static inline bool scte35_insert_has_program_splice(const uint8_t *p_scte35)
{
    const uint8_t *p_command = scte35_get_command(p_scte35);
    return !!(p_command[5] & 0x40);
}

static inline void scte35_insert_set_program_splice(const uint8_t *p_scte35,
                                                    bool b_program_splice)
{
    uint8_t *p_command = scte35_get_command(p_scte35);
    if (b_program_splice)
        p_command[5] |= 0x40;
    else
        p_command[5] &= ~0x40;
}

static inline bool scte35_insert_has_duration(const uint8_t *p_scte35)
{
    const uint8_t *p_command = scte35_get_command(p_scte35);
    return !!(p_command[5] & 0x20);
}

static inline void scte35_insert_set_duration(const uint8_t *p_scte35,
                                              bool b_duration)
{
    uint8_t *p_command = scte35_get_command(p_scte35);
    if (b_duration)
        p_command[5] |= 0x20;
    else
        p_command[5] &= ~0x20;
}

static inline bool scte35_insert_has_splice_immediate(const uint8_t *p_scte35)
{
    const uint8_t *p_command = scte35_get_command(p_scte35);
    return !!(p_command[5] & 0x10);
}

static inline void scte35_insert_set_splice_immediate(const uint8_t *p_scte35,
                                                      bool b_splice_immediate)
{
    uint8_t *p_command = scte35_get_command(p_scte35);
    if (b_splice_immediate)
        p_command[5] |= 0x10;
    else
        p_command[5] &= ~0x10;
}

static inline uint8_t *scte35_insert_get_splice_time(const uint8_t *p_scte35)
{
    uint8_t *p_command = scte35_get_command(p_scte35);
    return p_command + SCTE35_INSERT_HEADER_SIZE + SCTE35_INSERT_HEADER2_SIZE;
}

static inline uint8_t scte35_insert_get_component_count(const uint8_t *p_scte35)
{
    uint8_t *p_command = scte35_get_command(p_scte35);
    return p_command[SCTE35_INSERT_HEADER_SIZE + SCTE35_INSERT_HEADER2_SIZE];
}

static inline void scte35_insert_set_component_count(uint8_t *p_scte35,
                                                     uint8_t i_component_count)
{
    uint8_t *p_command = scte35_get_command(p_scte35);
    p_command[SCTE35_INSERT_HEADER_SIZE + SCTE35_INSERT_HEADER2_SIZE] =
        i_component_count;
}

static inline uint8_t scte35_insert_component_get_component_tag(const uint8_t *p_component)
{
    return p_component[0];
}

static inline void scte35_insert_component_set_component_tag(uint8_t *p_component, uint8_t i_component_tag)
{
    p_component[0] = i_component_tag;
}

static inline uint8_t *scte35_insert_component_get_splice_time(const uint8_t *p_component)
{
    return (uint8_t *)p_component + SCTE35_INSERT_COMPONENT_HEADER_SIZE;
}

static inline uint8_t *scte35_insert_get_component(const uint8_t *p_scte35,
                                                   uint8_t n)
{
    uint16_t i_section_size = psi_get_length(p_scte35) + PSI_HEADER_SIZE
                               - PSI_CRC_SIZE;
    bool b_splice_immediate = scte35_insert_has_splice_immediate(p_scte35);
    uint8_t *p_scte35_n = scte35_get_command(p_scte35) +
        SCTE35_INSERT_HEADER_SIZE + SCTE35_INSERT_HEADER2_SIZE +
        SCTE35_INSERT_COMPONENT_COUNT_SIZE;
    if (p_scte35_n - p_scte35 > i_section_size)
        return NULL;

    while (n) {
        if (p_scte35_n + SCTE35_INSERT_COMPONENT_HEADER_SIZE - p_scte35 >
                i_section_size)
            return NULL;
        p_scte35_n += SCTE35_INSERT_COMPONENT_HEADER_SIZE +
            (b_splice_immediate ?
             scte35_splice_time_size(
                 scte35_insert_component_get_splice_time(p_scte35_n)) :
             0);
        n--;
    }
    if (p_scte35_n - p_scte35 >= i_section_size) return NULL;
    return p_scte35_n;
}

static inline uint8_t *scte35_insert_get_break_duration(const uint8_t *p_scte35)
{
    if (!scte35_insert_has_program_splice(p_scte35))
        return scte35_insert_get_component(p_scte35,
                scte35_insert_get_component_count(p_scte35) + 1);

    if (scte35_insert_has_splice_immediate(p_scte35))
        return scte35_get_command(p_scte35) + SCTE35_INSERT_HEADER_SIZE +
               SCTE35_INSERT_HEADER2_SIZE;

    uint8_t *p_splice_time = scte35_insert_get_splice_time(p_scte35);
    return p_splice_time + scte35_splice_time_size(p_splice_time);
}

static inline uint8_t *scte35_insert_get_footer(const uint8_t *p_scte35)
{
    return scte35_insert_get_break_duration(p_scte35) +
        (scte35_insert_has_duration(p_scte35) ?
         SCTE35_BREAK_DURATION_HEADER_SIZE : 0);
}

static inline uint16_t scte35_insert_get_unique_program_id(const uint8_t *p_scte35)
{
    uint8_t *p_footer = scte35_insert_get_footer(p_scte35);
    return (p_footer[0] << 8) | p_footer[1];
}

static inline void scte35_insert_set_unique_program_id(uint8_t *p_scte35,
        uint16_t i_unique_program_id)
{
    uint8_t *p_footer = scte35_insert_get_footer(p_scte35);
    p_footer[0] = (i_unique_program_id >> 8) & 0xff;
    p_footer[1] = i_unique_program_id & 0xff;
}

static inline uint8_t scte35_insert_get_avail_num(const uint8_t *p_scte35)
{
    uint8_t *p_footer = scte35_insert_get_footer(p_scte35);
    return p_footer[2];
}

static inline void scte35_insert_set_avail_num(uint8_t *p_scte35,
                                               uint8_t i_avail_num)
{
    uint8_t *p_footer = scte35_insert_get_footer(p_scte35);
    p_footer[2] = i_avail_num;
}

static inline uint8_t scte35_insert_get_avails_expected(const uint8_t *p_scte35)
{
    uint8_t *p_footer = scte35_insert_get_footer(p_scte35);
    return p_footer[3];
}

static inline void scte35_insert_set_avails_expected(uint8_t *p_scte35,
                                                     uint8_t i_avails_expected)
{
    uint8_t *p_footer = scte35_insert_get_footer(p_scte35);
    p_footer[3] = i_avails_expected;
}

static inline bool scte35_insert_validate(const uint8_t *p_scte35)
{
    size_t i_length = scte35_get_command_length(p_scte35);
    if (i_length < SCTE35_INSERT_HEADER_SIZE)
        return false;

    if (scte35_insert_has_cancel(p_scte35))
        return i_length <= SCTE35_INSERT_HEADER_SIZE;
    if (i_length < SCTE35_INSERT_HEADER_SIZE + SCTE35_INSERT_HEADER2_SIZE)
        return false;

    if (scte35_insert_has_program_splice(p_scte35)) {
        if (scte35_insert_has_splice_immediate(p_scte35)) {
            if (scte35_insert_has_duration(p_scte35))
                return i_length >= SCTE35_INSERT_HEADER_SIZE +
                                   SCTE35_INSERT_HEADER2_SIZE +
                                   SCTE35_BREAK_DURATION_HEADER_SIZE +
                                   SCTE35_INSERT_FOOTER_SIZE;
            return i_length >= SCTE35_INSERT_HEADER_SIZE +
                               SCTE35_INSERT_HEADER2_SIZE +
                               SCTE35_INSERT_FOOTER_SIZE;
        }

        if (i_length < SCTE35_INSERT_HEADER_SIZE + SCTE35_INSERT_HEADER2_SIZE +
                       SCTE35_SPLICE_TIME_HEADER_SIZE ||
            i_length < SCTE35_INSERT_HEADER_SIZE + SCTE35_INSERT_HEADER2_SIZE +
                       scte35_splice_time_size(
                           scte35_insert_get_splice_time(p_scte35)))
            return false;

        if (scte35_insert_has_duration(p_scte35))
            return i_length >= SCTE35_INSERT_HEADER_SIZE +
                SCTE35_INSERT_HEADER2_SIZE +
                scte35_splice_time_size(scte35_insert_get_splice_time(p_scte35))
                + SCTE35_BREAK_DURATION_HEADER_SIZE +
                SCTE35_INSERT_FOOTER_SIZE;
        return i_length >= SCTE35_INSERT_HEADER_SIZE +
            SCTE35_INSERT_HEADER2_SIZE +
            scte35_splice_time_size(scte35_insert_get_splice_time(p_scte35))
            + SCTE35_INSERT_FOOTER_SIZE;
    }

    if (i_length < SCTE35_INSERT_HEADER_SIZE + SCTE35_INSERT_HEADER2_SIZE +
                   SCTE35_INSERT_COMPONENT_COUNT_SIZE)
        return false;

    const uint8_t *p_command = scte35_get_command(p_scte35);
    const uint8_t *p_end = scte35_insert_get_component(p_scte35,
            scte35_insert_get_component_count(p_scte35) + 1);
    if (p_end == NULL)
        return false;

    if (scte35_insert_has_duration(p_scte35))
        return i_length >= p_end + SCTE35_BREAK_DURATION_HEADER_SIZE +
                                   SCTE35_INSERT_FOOTER_SIZE - p_command;
    return i_length >= p_end + SCTE35_INSERT_FOOTER_SIZE - p_command;
}

/*****************************************************************************
 * Splice Information Table - time_signal command
 *****************************************************************************/
#define SCTE35_TIME_SIGNAL_COMMAND              6
#define SCTE35_TIME_SIGNAL_HEADER_SIZE          SCTE35_SPLICE_TIME_HEADER_SIZE
#define SCTE35_TIME_SIGNAL_TIME_SIZE            SCTE35_SPLICE_TIME_TIME_SIZE

static inline void scte35_time_signal_init(uint8_t *p_scte35, uint16_t i_length)
{
    scte35_init(p_scte35);
    scte35_set_command_type(p_scte35, SCTE35_TIME_SIGNAL_COMMAND);
    scte35_set_command_length(p_scte35,
                              SCTE35_TIME_SIGNAL_HEADER_SIZE + i_length);
    scte35_set_desclength(p_scte35, 0);
}

static inline uint8_t *scte35_time_signal_get_splice_time(const uint8_t *p_scte35)
{
    return scte35_get_command(p_scte35);
}

static inline bool scte35_time_signal_validate(const uint8_t *p_scte35)
{
    return scte35_get_command_length(p_scte35) >=
        scte35_splice_time_size(scte35_time_signal_get_splice_time(p_scte35));
}

/*****************************************************************************
 * Splice Information Table - bandwidth_reservation command
 *****************************************************************************/
#define SCTE35_BANDWIDTH_RESERVATION_COMMAND        7
#define SCTE35_BANDWIDTH_RESERVATION_HEADER_SIZE    0

static inline void scte35_bandwidth_reservation_init(uint8_t *p_scte35)
{
    scte35_init(p_scte35);
    scte35_set_command_type(p_scte35, SCTE35_BANDWIDTH_RESERVATION_COMMAND);
    scte35_set_command_length(p_scte35,
                              SCTE35_BANDWIDTH_RESERVATION_HEADER_SIZE);
    scte35_set_desclength(p_scte35, 0);
}

static inline bool scte35_bandwidth_reservation_validate(const uint8_t *p_scte35)
{
    return true;
}

/*****************************************************************************
 * Splice Information Table - private command
 *****************************************************************************/
#define SCTE35_PRIVATE_COMMAND                      0xff
#define SCTE35_PRIVATE_HEADER_SIZE                  4

static inline void scte35_private_init(uint8_t *p_scte35, uint16_t i_length)
{
    scte35_init(p_scte35);
    scte35_set_command_type(p_scte35, SCTE35_PRIVATE_COMMAND);
    scte35_set_command_length(p_scte35,
                              SCTE35_PRIVATE_HEADER_SIZE + i_length);
    scte35_set_desclength(p_scte35, 0);
}

static inline uint32_t scte35_private_get_identifier(const uint8_t *p_scte35)
{
    const uint8_t *p_command = scte35_get_command(p_scte35);
    return ((uint32_t)p_command[0] << 24) | (p_command[1] << 16) |
           (p_command[2] << 8) | p_command[3];
}

static inline void scte35_private_set_identifier(uint8_t *p_scte35,
                                                 uint32_t i_identifier)
{
    uint8_t *p_command = scte35_get_command(p_scte35);
    p_command[0] = (i_identifier >> 24) & 0xff;
    p_command[1] = (i_identifier >> 16) & 0xff;
    p_command[2] = (i_identifier >> 8) & 0xff;
    p_command[3] = i_identifier & 0xff;
}

static inline bool scte35_private_validate(const uint8_t *p_scte35)
{
    return scte35_get_command_length(p_scte35) >= SCTE35_PRIVATE_HEADER_SIZE;
}

/*****************************************************************************
 * Splice Information Table validation
 *****************************************************************************/
static inline bool scte35_validate(const uint8_t *p_scte35)
{
    if (psi_get_syntax(p_scte35) ||
        psi_get_tableid(p_scte35) != SCTE35_TABLE_ID)
        return false;

    if (!psi_check_crc(p_scte35))
        return false;
    if (scte35_get_protocol(p_scte35))
        return false;

    uint16_t i_section_size = psi_get_length(p_scte35) + PSI_HEADER_SIZE
                               - PSI_CRC_SIZE;
    if (i_section_size < SCTE35_HEADER_SIZE)
        return false;

    uint16_t i_command_length = scte35_get_command_length(p_scte35);
    if (i_command_length != 0xfff &&
        (i_section_size < SCTE35_HEADER_SIZE + i_command_length +
                          SCTE35_HEADER2_SIZE ||
         i_section_size < SCTE35_HEADER_SIZE + i_command_length +
                          SCTE35_HEADER2_SIZE +
                          scte35_get_desclength(p_scte35)))
        return false;

    switch (scte35_get_command_type(p_scte35)) {
        case SCTE35_NULL_COMMAND:
            if (!scte35_null_validate(p_scte35))
                return false;
            break;
        case SCTE35_INSERT_COMMAND:
            if (!scte35_insert_validate(p_scte35))
                return false;
            break;
        case SCTE35_TIME_SIGNAL_COMMAND:
            if (!scte35_time_signal_validate(p_scte35))
                return false;
            break;
        case SCTE35_BANDWIDTH_RESERVATION_COMMAND:
            if (!scte35_bandwidth_reservation_validate(p_scte35))
                return false;
            break;
        case SCTE35_PRIVATE_COMMAND:
            if (!scte35_private_validate(p_scte35))
                return false;
            break;
        default:
            break;
    }

    if (i_command_length != 0xfff &&
        !descl_validate(scte35_get_descl(p_scte35),
                        scte35_get_desclength(p_scte35)))
        return false;

    return true;
}

#ifdef __cplusplus
}
#endif

#endif