-
Notifications
You must be signed in to change notification settings - Fork 4
/
Copy pathh265.c
715 lines (671 loc) · 37 KB
/
h265.c
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
/*
* h265.c: Frontend Status Monitor plugin for the Video Disk Recorder
*
* See the README file for copyright information and how to reach the author.
*
*/
#include <math.h>
#include "log.h"
#include "tools.h"
#include "h265.h"
const cFemonH265::t_DAR cFemonH265::darS[] =
{
{ VIDEO_ASPECT_RATIO_1_1, 100 },
{ VIDEO_ASPECT_RATIO_4_3, 133 },
{ VIDEO_ASPECT_RATIO_16_9, 177 },
{ VIDEO_ASPECT_RATIO_2_21_1, 221 },
{ VIDEO_ASPECT_RATIO_12_11, 109 },
{ VIDEO_ASPECT_RATIO_10_11, 90 },
{ VIDEO_ASPECT_RATIO_16_11, 145 },
{ VIDEO_ASPECT_RATIO_40_33, 121 },
{ VIDEO_ASPECT_RATIO_24_11, 218 },
{ VIDEO_ASPECT_RATIO_20_11, 181 },
{ VIDEO_ASPECT_RATIO_32_11, 290 },
{ VIDEO_ASPECT_RATIO_80_33, 242 },
{ VIDEO_ASPECT_RATIO_18_11, 163 },
{ VIDEO_ASPECT_RATIO_15_11, 136 },
{ VIDEO_ASPECT_RATIO_64_33, 193 },
{ VIDEO_ASPECT_RATIO_160_99, 161 },
{ VIDEO_ASPECT_RATIO_3_2, 150 },
{ VIDEO_ASPECT_RATIO_2_1, 200 }
};
const cFemonH265::t_SAR cFemonH265::sarS[] =
{
{ 0, 0 }, // VIDEO_ASPECT_RATIO_INVALID
{ 1, 1 }, // VIDEO_ASPECT_RATIO_1_1
{ 12, 11 }, // VIDEO_ASPECT_RATIO_12_11
{ 10, 11 }, // VIDEO_ASPECT_RATIO_10_11
{ 16, 11 }, // VIDEO_ASPECT_RATIO_16_11
{ 40, 33 }, // VIDEO_ASPECT_RATIO_40_33
{ 24, 11 }, // VIDEO_ASPECT_RATIO_24_11
{ 20, 11 }, // VIDEO_ASPECT_RATIO_20_11
{ 32, 11 }, // VIDEO_ASPECT_RATIO_32_11
{ 80, 33 }, // VIDEO_ASPECT_RATIO_80_33
{ 18, 11 }, // VIDEO_ASPECT_RATIO_18_11
{ 15, 11 }, // VIDEO_ASPECT_RATIO_15_11
{ 64, 33 }, // VIDEO_ASPECT_RATIO_64_33
{ 160, 99 }, // VIDEO_ASPECT_RATIO_160_99
{ 4, 3 }, // VIDEO_ASPECT_RATIO_4_3
{ 3, 2 }, // VIDEO_ASPECT_RATIO_3_2
{ 2, 1 } // VIDEO_ASPECT_RATIO_2_1
};
const eVideoFormat cFemonH265::videoFormatS[] =
{
VIDEO_FORMAT_COMPONENT,
VIDEO_FORMAT_PAL,
VIDEO_FORMAT_NTSC,
VIDEO_FORMAT_SECAM,
VIDEO_FORMAT_MAC,
VIDEO_FORMAT_UNKNOWN,
VIDEO_FORMAT_RESERVED,
VIDEO_FORMAT_RESERVED
};
cFemonH265::cFemonH265(cFemonVideoIf *videoHandlerP)
: videoHandlerM(videoHandlerP),
widthM(0),
heightM(0),
aspectRatioM(VIDEO_ASPECT_RATIO_INVALID),
formatM(VIDEO_FORMAT_INVALID),
frameRateM(0),
bitRateM(0),
scanM(VIDEO_SCAN_INVALID),
frameFieldInfoPresentFlagM(false)
{
reset();
}
cFemonH265::~cFemonH265()
{
}
bool cFemonH265::processVideo(const uint8_t *bufP, int lenP)
{
uint8_t nal_data[lenP];
bool aud_found = false, sps_found = false, sei_found = true; // SEI temporarily disabled!
const uint8_t *buf = bufP;
const uint8_t *start = buf;
const uint8_t *end = start + lenP;
if (!videoHandlerM)
return false;
// skip PES header
if (!PesLongEnough(lenP))
return false;
buf += PesPayloadOffset(buf);
start = buf;
reset();
for (;;) {
int consumed = 0;
buf = nextStartCode(buf, end);
if (buf >= end)
break;
switch ((buf[3] >> 1) & 0x3F) {
case NAL_AUD:
if (!aud_found) {
debug2("%s Found NAL AUD at offset %d/%d", __PRETTY_FUNCTION__, int(buf - start), lenP);
aud_found = true;
}
break;
case NAL_SPS:
if (!sps_found) {
debug2("%s Found NAL SPS at offset %d/%d", __PRETTY_FUNCTION__, int(buf - start), lenP);
int nal_len = nalUnescape(nal_data, buf + 5, int(end - buf - 5));
consumed = parseSPS(nal_data, nal_len);
if (consumed > 0)
sps_found = true;
}
break;
case NAL_SEI:
if (!sei_found) {
debug2("%s Found NAL SEI at offset %d/%d", __PRETTY_FUNCTION__, int(buf - start), lenP);
int nal_len = nalUnescape(nal_data, buf + 5, int(end - buf - 5));
consumed = parseSEI(nal_data, nal_len);
if (consumed > 0)
sei_found = true;
}
break;
default:
break;
}
if (aud_found && sps_found && sei_found)
break;
buf += consumed + 4;
}
if (aud_found) {
videoHandlerM->SetVideoCodec(VIDEO_CODEC_H265);
if (sps_found) {
debug2("%s width=%d height=%d, aspect=%d format=%d bitrate=%.0f", __PRETTY_FUNCTION__, widthM, heightM, aspectRatioM, formatM, bitRateM);
videoHandlerM->SetVideoSize(widthM, heightM);
videoHandlerM->SetVideoFormat(formatM);
videoHandlerM->SetVideoAspectRatio(aspectRatioM);
videoHandlerM->SetVideoBitrate(bitRateM);
}
if (sps_found || sei_found) {
debug2("%s scan=%d framerate=%.2f", __PRETTY_FUNCTION__, scanM, frameRateM);
videoHandlerM->SetVideoScan(scanM);
videoHandlerM->SetVideoFramerate(frameRateM);
}
}
return sps_found;
}
void cFemonH265::reset()
{
frameFieldInfoPresentFlagM = false;
}
const uint8_t *cFemonH265::nextStartCode(const uint8_t *startP, const uint8_t *endP)
{
for (endP -= 3; startP < endP; ++startP) {
if ((startP[0] == 0x00) && (startP[1] == 0x00) && (startP[2] == 0x01))
return startP;
}
return (endP + 3);
}
int cFemonH265::nalUnescape(uint8_t *dstP, const uint8_t *srcP, int lenP)
{
int s = 0, d = 0;
while (s < lenP - 3) {
if (!srcP[s] && !srcP[s + 1] && srcP[s + 2] == 3) {
dstP[d++] = srcP[s++];
dstP[d++] = srcP[s++];
s++; // skip emulation_prevention_three_byte
}
else
dstP[d++] = srcP[s++];
}
while (s < lenP)
dstP[d++] = srcP[s++];
return d;
}
int cFemonH265::parseSPS(const uint8_t *bufP, int lenP)
{
cFemonBitStream bs(bufP, lenP);
uint32_t width = widthM;
uint32_t height = heightM;
eVideoFormat format = formatM;
eVideoAspectRatio aspect_ratio = aspectRatioM;
eVideoScan scan = scanM;
double frame_rate = frameRateM;
double bit_rate = bitRateM;
bool frame_field_info_present_flag = frameFieldInfoPresentFlagM;
const char *profile_name = NULL;
bool general_tier_flag, conformance_window_flag, sps_sub_layer_ordering_info_present_flag, profilePresentFlag = true;
bool general_max_12bit_constraint_flag = false, general_max_10bit_constraint_flag = false, general_max_8bit_constraint_flag = false;
bool general_max_422chroma_constraint_flag = false, general_max_420chroma_constraint_flag = false, general_max_monochrome_constraint_flag = false;
bool general_intra_constraint_flag = false, general_one_picture_only_constraint_flag = false, general_lower_bit_rate_constraint_flag = false;
bool general_progressive_source_flag, general_interlaced_source_flag, general_profile_compatibility_flag[32];
uint32_t chroma_format_idc, log2_max_pic_order_cnt_lsb_minus4, num_short_term_ref_pic_sets, num_long_term_ref_pics_sps;
uint8_t sps_max_sub_layers_minus1, sub_layer_profile_present_flag[8], sub_layer_level_present_flag[8], general_profile_idc, general_level_idc;
bs.SkipBits(4); // sps_video_parameter_set_id
sps_max_sub_layers_minus1 = bs.GetBits(3); // sps_max_sub_layers_minus1
bs.SkipBit(); // sps_temporal_id_nesting_flag
// start of profile_tier_level(1, sps_max_sub_layers_minus1)
if (profilePresentFlag) {
bs.SkipBits(2); // general_profile_space
general_tier_flag = bs.GetBit(); // general_tier_flag
general_profile_idc = bs.GetBits(5); // general_profile_idc
for (int i = 0; i < 32; ++i) {
general_profile_compatibility_flag[i] = bs.GetBit(); // general_profile_compatibility_flag[i]
}
general_progressive_source_flag = bs.GetBit(); // general_progressive_source_flag
general_interlaced_source_flag = bs.GetBit(); // general_interlaced_source_flag
if (general_progressive_source_flag && !general_interlaced_source_flag)
scan = VIDEO_SCAN_PROGRESSIVE;
else if (!general_progressive_source_flag && general_interlaced_source_flag)
scan = VIDEO_SCAN_INTERLACED;
else if (!general_progressive_source_flag && !general_interlaced_source_flag)
scan = VIDEO_SCAN_UNKNOWN;
else
scan = VIDEO_SCAN_INVALID;
debug2("%s general_progressive_source_flag=%d general_interlaced_source_flag=%d scan_type=%d", __PRETTY_FUNCTION__, general_progressive_source_flag, general_interlaced_source_flag, scan);
bs.SkipBit(); // general_non_packed_constraint_flag
bs.SkipBit(); // general_frame_only_constraint_flag
if (general_profile_idc == 4 || general_profile_compatibility_flag[4] ||
general_profile_idc == 5 || general_profile_compatibility_flag[5] ||
general_profile_idc == 6 || general_profile_compatibility_flag[6] ||
general_profile_idc == 7 || general_profile_compatibility_flag[7]) {
// the number of bits in this syntax structure is not affected by this condition
general_max_12bit_constraint_flag = bs.GetBit(); // general_max_12bit_constraint_flag
general_max_10bit_constraint_flag = bs.GetBit(); // general_max_10bit_constraint_flag
general_max_8bit_constraint_flag = bs.GetBit(); // general_max_8bit_constraint_flag
debug2("%s general_max_12bit_constraint_flag=%d general_max_10bit_constraint_flag=%d general_max_8bit_constraint_flag=%d", __PRETTY_FUNCTION__, general_max_12bit_constraint_flag, general_max_10bit_constraint_flag, general_max_8bit_constraint_flag);
general_max_422chroma_constraint_flag = bs.GetBit(); // general_max_422chroma_constraint_flag
general_max_420chroma_constraint_flag = bs.GetBit(); // general_max_420chroma_constraint_flag
general_max_monochrome_constraint_flag = bs.GetBit(); // general_max_monochrome_constraint_flag
debug2("%s general_max_422chroma_constraint_flag=%d general_max_420chroma_constraint_flag=%d general_max_monochrome_constraint_flag=%d", __PRETTY_FUNCTION__, general_max_422chroma_constraint_flag, general_max_420chroma_constraint_flag, general_max_monochrome_constraint_flag);
general_intra_constraint_flag = bs.GetBit(); // general_intra_constraint_flag
general_one_picture_only_constraint_flag = bs.GetBit(); // general_one_picture_only_constraint_flag
general_lower_bit_rate_constraint_flag = bs.GetBit(); // general_lower_bit_rate_constraint_flag
debug2("%s general_intra_constraint_flag=%d general_one_picture_only_constraint_flag=%d general_lower_bit_rate_constraint_flag=%d", __PRETTY_FUNCTION__, general_intra_constraint_flag, general_one_picture_only_constraint_flag, general_lower_bit_rate_constraint_flag);
bs.SkipBits(34); // general_reserved_zero_34bits
}
else
bs.SkipBits(43); // general_reserved_zero_43bits
// the number of bits in this syntax structure is not affected by this condition
bs.SkipBit(); // general_reserved_zero_bit
}
general_level_idc = bs.GetBits(8); // general_level_idc
debug2("%s general_profile_idc=%d general_tier_flag=%d general_level_idc=%d", __PRETTY_FUNCTION__, general_profile_idc, general_tier_flag, general_level_idc);
switch (general_profile_idc) {
default:
case 0:
profile_name = "None";
break;
case 1:
profile_name = "Main";
break;
case 2:
profile_name = "Main 10";
break;
case 3:
profile_name = "Main Still Picture";
break;
case 4:
profile_name = "Format Range Extensions";
break;
case 5:
profile_name = "Format Range Extensions High Throughput";
break;
}
if (general_profile_idc == 1 || general_profile_idc == 2)
switch (general_level_idc) {
case 30: // level 1
bit_rate = general_tier_flag ? 0 : 128000;
break;
case 60: // level 2
bit_rate = general_tier_flag ? 0 : 1500000;
break;
case 63: // level 2.1
bit_rate = general_tier_flag ? 0 : 3000000;
break;
case 90: // level 3
bit_rate = general_tier_flag ? 0 : 6000000;
break;
case 93: // level 3
bit_rate = general_tier_flag ? 0 : 10000000;
break;
case 120: // level 4
bit_rate = general_tier_flag ? 30000000 : 12000000;
break;
case 123: // level 4.1
bit_rate = general_tier_flag ? 50000000 : 20000000;
break;
case 150: // level 5
bit_rate = general_tier_flag ? 100000000 : 25000000;
break;
case 153: // level 5.1
bit_rate = general_tier_flag ? 160000000 : 40000000;
break;
case 156: // level 5.2
bit_rate = general_tier_flag ? 240000000 : 60000000;
break;
case 180: // level 6
bit_rate = general_tier_flag ? 240000000 : 60000000;
break;
case 183: // level 6.1
bit_rate = general_tier_flag ? 480000000 : 120000000;
break;
case 186: // level 6.2
bit_rate = general_tier_flag ? 800000000 : 240000000;
break;
default:
bit_rate = 0;
break;
}
else
bit_rate = 0;
debug2("%s profile=\"%s@L%.1f@%s\" bit_rate=%.f", __PRETTY_FUNCTION__, profile_name, (double)general_level_idc / 30, general_tier_flag ? "High" : "Main", bit_rate);
for (int i = 0; i < sps_max_sub_layers_minus1; ++i) {
sub_layer_profile_present_flag[i] = bs.GetBit(); // sub_layer_profile_present_flag[i]
sub_layer_level_present_flag[i] = bs.GetBit(); // sub_layer_level_present_flag[i]
}
if (sps_max_sub_layers_minus1 > 0) {
for (int i = sps_max_sub_layers_minus1; i < 8; ++i)
bs.SkipBits(2); // reserved_zero_2bits[i]
}
for (int i = 0; i < sps_max_sub_layers_minus1; ++i) {
if (sub_layer_profile_present_flag[i]) {
bs.SkipBits(2); // sub_layer_profile_space[i]
bs.SkipBit(); // sub_layer_tier_flag[i]
bs.SkipBits(5); // sub_layer_profile_idc[i]
bs.SkipBits(32); // sub_layer_profile_compatibility_flag[i][0-31]
bs.SkipBit(); // sub_layer_progressive_source_flag[i]
bs.SkipBit(); // sub_layer_interlaced_source_flag[i]
bs.SkipBit(); // sub_layer_non_packed_constraint_flag[i]
bs.SkipBit(); // sub_layer_frame_only_constraint_flag[i]
// the number of bits in this syntax structure is not affected by this condition
bs.SkipBits(43); // sub_layer_reserved_zero_43bits[i]
// the number of bits in this syntax structure is not affected by this condition
bs.SkipBit(); // sub_layer_reserved_zero_bit[i]
}
if (sub_layer_level_present_flag[i])
bs.SkipBits(8); // sub_layer_level_idc[i]
}
// end of profile_tier_level
bs.SkipUeGolomb(); // sps_seq_parameter_set_id
chroma_format_idc = bs.GetUeGolomb(); // chroma_format_idc
if (chroma_format_idc == 3)
bs.SkipBit(); // separate_colour_plane_flag
width = bs.GetUeGolomb(); // pic_width_in_luma_samples
height = bs.GetUeGolomb(); // pic_height_in_luma_samples
conformance_window_flag = bs.GetBit(); // conformance_window_flag
if (conformance_window_flag) {
bs.SkipUeGolomb(); // conf_win_left_offset
bs.SkipUeGolomb(); // conf_win_right_offset
bs.SkipUeGolomb(); // conf_win_top_offset
bs.SkipUeGolomb(); // conf_win_bottom_offset
}
bs.SkipUeGolomb(); // bit_depth_luma_minus8
bs.SkipUeGolomb(); // bit_depth_chroma_minus8
log2_max_pic_order_cnt_lsb_minus4 = bs.GetUeGolomb(); // log2_max_pic_order_cnt_lsb_minus4
sps_sub_layer_ordering_info_present_flag = bs.GetBit(); // sps_sub_layer_ordering_info_present_flag
for (int i = (sps_sub_layer_ordering_info_present_flag ? 0 : sps_max_sub_layers_minus1); i <= sps_max_sub_layers_minus1; ++i) {
bs.SkipUeGolomb(); // sps_max_dec_pic_buffering_minus1[i]
bs.SkipUeGolomb(); // sps_max_num_reorder_pics[i]
bs.SkipUeGolomb(); // sps_max_latency_increase_plus1[i]
}
bs.SkipUeGolomb(); // log2_min_luma_coding_block_size_minus3
bs.SkipUeGolomb(); // log2_diff_max_min_luma_coding_block_size
bs.SkipUeGolomb(); // log2_min_luma_transform_block_size_minus2
bs.SkipUeGolomb(); // log2_diff_max_min_luma_transform_block_size
bs.SkipUeGolomb(); // max_transform_hierarchy_depth_inter
bs.SkipUeGolomb(); // max_transform_hierarchy_depth_intra
if (bs.GetBit()) { // scaling_list_enabled_flag
if (bs.GetBit()) { // sps_scaling_list_data_present_flag
// start of scaling_list_data()
for (int sizeId = 0; sizeId < 4; ++sizeId) {
for (int matrixId = 0; matrixId < 6; matrixId += (sizeId == 3) ? 3 : 1) {
if (!bs.GetBit()) // scaling_list_pred_mode_flag[sizeId][matrixId]
bs.SkipUeGolomb(); // scaling_list_pred_matrix_id_delta[sizeId][matrixId]
else {
int coefNum = min(64, (1 << (4 + (sizeId << 1))));
if (sizeId > 1)
bs.SkipSeGolomb(); // scaling_list_dc_coef_minus8[sizeId−2][matrixId]
for (int i = 0; i < coefNum; ++i)
bs.SkipSeGolomb(); // scaling_list_delta_coef
}
}
}
// end of scaling_list_data()
}
}
bs.SkipBit(); // amp_enabled_flag
bs.SkipBit(); // sample_adaptive_offset_enabled_flag
if (bs.GetBit()) { // pcm_enabled_flag
bs.SkipBits(4); // pcm_sample_bit_depth_luma_minus1
bs.SkipBits(4); // pcm_sample_bit_depth_chroma_minus1
bs.SkipUeGolomb(); // log2_min_pcm_luma_coding_block_size_minus3
bs.SkipUeGolomb(); // log2_diff_max_min_pcm_luma_coding_block_size
bs.SkipBit(); // pcm_loop_filter_disabled_flag
}
num_short_term_ref_pic_sets = bs.GetUeGolomb(); // num_short_term_ref_pic_sets
uint32_t NumDeltaPocs[num_short_term_ref_pic_sets];
for (uint32_t stRpsIdx = 0; stRpsIdx < num_short_term_ref_pic_sets; ++stRpsIdx) {
// start of st_ref_pic_set(stRpsIdx)
bool inter_ref_pic_set_prediction_flag = false;
if (stRpsIdx != 0)
inter_ref_pic_set_prediction_flag = bs.GetBit(); // inter_ref_pic_set_prediction_flag
if (inter_ref_pic_set_prediction_flag) {
uint32_t RefRpsIdx, delta_idx_minus1 = 0;
if (stRpsIdx == num_short_term_ref_pic_sets)
delta_idx_minus1 = bs.GetUeGolomb(); // delta_idx_minus1
bs.SkipBit(); // delta_rps_sign
bs.SkipUeGolomb(); // abs_delta_rps_minus1
RefRpsIdx = stRpsIdx - (delta_idx_minus1 + 1);
NumDeltaPocs[stRpsIdx] = 0;
for (uint32_t j = 0; j <= NumDeltaPocs[RefRpsIdx]; ++j) {
if (!bs.GetBit()) { // used_by_curr_pic_flag[j]
if (bs.GetBit()) // use_delta_flag[j]
NumDeltaPocs[stRpsIdx]++;
}
else
NumDeltaPocs[stRpsIdx]++;
}
}
else {
uint32_t num_negative_pics = bs.GetUeGolomb(); // num_negative_pics
uint32_t num_positive_pics = bs.GetUeGolomb(); // num_positive_pics
for (uint32_t j = 0; j < num_negative_pics; ++j) {
bs.SkipUeGolomb(); // delta_poc_s0_minus1[i]
bs.SkipBit(); // used_by_curr_pic_s0_flag[i]
}
for (uint32_t j = 0; j < num_positive_pics; ++j) {
bs.SkipUeGolomb(); // delta_poc_s1_minus1[i]
bs.SkipBit(); // delta_poc_s1_minus1[i]
}
NumDeltaPocs[stRpsIdx] = num_negative_pics + num_positive_pics;
}
// end of st_ref_pic_set(stRpsIdx)
}
if (bs.GetBit()) { // long_term_ref_pics_present_flag
num_long_term_ref_pics_sps = bs.GetUeGolomb(); // num_long_term_ref_pics_sps
for (uint32_t i = 0; i < num_long_term_ref_pics_sps; ++i) {
bs.SkipBits(log2_max_pic_order_cnt_lsb_minus4 + 4); // lt_ref_pic_poc_lsb_sps[i]
bs.SkipBit(); // used_by_curr_pic_lt_sps_flag[i]
}
}
bs.SkipBit(); // sps_temporal_mvp_enabled_flag
bs.SkipBit(); // strong_intra_smoothing_enabled_flag
if (bs.GetBit()) { // vui_parameters_present_flag
// start of vui_parameters()
if (bs.GetBit()) { // aspect_ratio_info_present_flag
uint32_t sar_width = 0, sar_height = 0;
uint8_t aspect_ratio_idc = bs.GetBits(8); // aspect_ratio_idc
debug2("%s aspect_ratio_idc=%d", __PRETTY_FUNCTION__, aspect_ratio_idc);
if (aspect_ratio_idc == 255) { // EXTENDED_SAR
sar_width = bs.GetBits(16); // sar_width
sar_height = bs.GetBits(16); // sar_height
}
else if (aspect_ratio_idc < ELEMENTS(sarS)) {
sar_width = sarS[aspect_ratio_idc].w;
sar_height = sarS[aspect_ratio_idc].h;
}
if (sar_width && sar_height) {
int index = -1, ratio = int(100.0L * sar_width * width / sar_height / height);
for (unsigned int i = 0; i < ELEMENTS(darS); ++i) {
if (darS[i].ratio == ratio) {
index = i;
break;
}
}
if (index < 0) {
if (aspect_ratio_idc == 255)
aspect_ratio = VIDEO_ASPECT_RATIO_EXTENDED;
else
aspect_ratio = VIDEO_ASPECT_RATIO_INVALID;
}
else
aspect_ratio = darS[index].dar;
debug2("%s sar_width=%d sar_height=%d aspect_ratio=%d", __PRETTY_FUNCTION__, sar_width, sar_height, aspect_ratio);
}
}
if (bs.GetBit()) // overscan_info_present_flag
bs.SkipBit(); // overscan_appropriate_flag
if (bs.GetBit()) { // video_signal_type_present_flag
uint32_t video_format = bs.GetBits(3); // video_format
if (video_format < ELEMENTS(videoFormatS)) {
format = videoFormatS[video_format];
debug2("%s video_format=%d format=%d", __PRETTY_FUNCTION__, video_format, format);
}
bs.SkipBit(); // video_full_range_flag
if (bs.GetBit()) { // colour_description_present_flag
bs.SkipBits(8); // colour_primaries
bs.SkipBits(8); // transfer_characteristics
bs.SkipBits(8); // matrix_coeffs
}
}
if (bs.GetBit()) { // chroma_loc_info_present_flag
bs.SkipUeGolomb(); // chroma_sample_loc_type_top_field
bs.SkipUeGolomb(); // chroma_sample_loc_type_bottom_field
}
bs.SkipBit(); // neutral_chroma_indication_flag
bs.SkipBit(); // field_seq_flag
frame_field_info_present_flag = bs.GetBit(); // frame_field_info_present_flag
debug2("%s frame_field_info_present_flag=%d", __PRETTY_FUNCTION__, frame_field_info_present_flag);
if (bs.GetBit()) { // default_display_window_flag
bs.SkipUeGolomb(); // def_disp_win_left_offset
bs.SkipUeGolomb(); // def_disp_win_right_offset
bs.SkipUeGolomb(); // def_disp_win_top_offset
bs.SkipUeGolomb(); // def_disp_win_bottom_offset
}
if (bs.GetBit()) { // vui_timing_info_present_flag
uint32_t vui_num_units_in_tick = bs.GetBits(32); // vui_num_units_in_tick
uint32_t vui_time_scale = bs.GetBits(32); // vui_time_scale
if (vui_num_units_in_tick > 0) {
frame_rate = (double)vui_time_scale / vui_num_units_in_tick;
debug2("%s frame_rate = vui_time_scale(%d) / vui_num_units_in_tick(%d) = %.f", __PRETTY_FUNCTION__, vui_time_scale, vui_num_units_in_tick, frame_rate);
}
if (bs.GetBit()) // vui_poc_proportional_to_timing_flag
bs.SkipUeGolomb(); // vui_num_ticks_poc_diff_one_minus1
if (bs.GetBit()) { // vui_hrd_parameters_present_flag
// start of hrd_parameters(1, sps_max_sub_layers_minus1)
uint32_t bit_rate_scale = 0;
bool commonInfPresentFlag = true, nal_hrd_parameters_present_flag = false, vcl_hrd_parameters_present_flag = false, sub_pic_hrd_params_present_flag = false;
if (commonInfPresentFlag) {
nal_hrd_parameters_present_flag = bs.GetBit(); // nal_hrd_parameters_present_flag
vcl_hrd_parameters_present_flag = bs.GetBit(); // vcl_hrd_parameters_present_flag
if (nal_hrd_parameters_present_flag || vcl_hrd_parameters_present_flag) {
sub_pic_hrd_params_present_flag = bs.GetBit(); // sub_pic_hrd_params_present_flag
if (sub_pic_hrd_params_present_flag) {
bs.SkipBits(8); // tick_divisor_minus2
bs.SkipBits(5); // du_cpb_removal_delay_increment_length_minus1
bs.SkipBit(); // sub_pic_cpb_params_in_pic_timing_sei_flag
bs.SkipBits(5); // dpb_output_delay_du_length_minus1
}
bit_rate_scale = bs.GetBits(4); // bit_rate_scale
bs.SkipBits(4); // cpb_size_scale
if (sub_pic_hrd_params_present_flag)
bs.SkipBits(4); // cpb_size_du_scale
bs.SkipBits(5); // initial_cpb_removal_delay_length_minus1
bs.SkipBits(5); // au_cpb_removal_delay_length_minus1
bs.SkipBits(5); // dpb_output_delay_length_minus1
}
}
for (uint32_t i = 0; i <= sps_max_sub_layers_minus1; ++i) {
bool fixed_pic_rate_within_cvs_flag = false, low_delay_hrd_flag = false;
uint32_t cpb_cnt_minus1 = 0;
if (!bs.GetBit()) // fixed_pic_rate_general_flag[i]
fixed_pic_rate_within_cvs_flag = bs.GetBit(); // fixed_pic_rate_within_cvs_flag[i]
if (fixed_pic_rate_within_cvs_flag)
bs.SkipUeGolomb(); // elemental_duration_in_tc_minus1[i]
else
low_delay_hrd_flag = bs.GetBit(); // low_delay_hrd_flag[i]
if (!low_delay_hrd_flag)
cpb_cnt_minus1 = bs.GetUeGolomb(); // cpb_cnt_minus1[i]
if (nal_hrd_parameters_present_flag) {
// start of sub_layer_hrd_parameters(i)
for (uint32_t i = 0; i <= cpb_cnt_minus1; ++i) {
uint32_t bit_rate_value_minus1;
bit_rate_value_minus1 = bs.GetUeGolomb(); // bit_rate_value_minus1[i]
bs.SkipUeGolomb(); // cpb_size_value_minus1[i]
if (sub_pic_hrd_params_present_flag) {
bs.SkipUeGolomb(); // cpb_size_du_value_minus1[i]
bs.SkipUeGolomb(); // bit_rate_du_value_minus1[i]
}
else {
double bitrate = (double)((bit_rate_value_minus1 + 1) * pow(2.0, 6 + bit_rate_scale));
debug2("%s bit_rate_value_minus1(%u) + 1 * 2 ^ (6 + bit_rate_scale(%u)) = %.f", __PRETTY_FUNCTION__, bit_rate_value_minus1, bit_rate_scale, bitrate);
}
bs.SkipBit(); // cbr_flag[i]
}
// end of sub_layer_hrd_parameters(i)
}
if (vcl_hrd_parameters_present_flag) {
// start of sub_layer_hrd_parameters(i)
for (uint32_t i = 0; i <= cpb_cnt_minus1; ++i) {
bs.SkipUeGolomb(); // bit_rate_value_minus1[i]
bs.SkipUeGolomb(); // cpb_size_value_minus1[i]
if (sub_pic_hrd_params_present_flag) {
bs.SkipUeGolomb(); // cpb_size_du_value_minus1[i]
bs.SkipUeGolomb(); // bit_rate_du_value_minus1[i]
}
bs.SkipBit(); // cbr_flag[i]
}
// end of sub_layer_hrd_parameters(i)
}
}
// end of hrd_parameters(1, sps_max_sub_layers_minus1)
}
}
if (bs.GetBit()) { // bitstream_restriction_flag
bs.SkipBit(); // tiles_fixed_structure_flag
bs.SkipBit(); // motion_vectors_over_pic_boundaries_flag
bs.SkipBit(); // restricted_ref_pic_lists_flag
bs.SkipUeGolomb(); // min_spatial_segmentation_idc
bs.SkipUeGolomb(); // max_bytes_per_pic_denom
bs.SkipUeGolomb(); // max_bits_per_min_cu_denom
bs.SkipUeGolomb(); // log2_max_mv_length_horizontal
bs.SkipUeGolomb(); // log2_max_mv_length_vertical
}
// end of vui_parameters()
}
if (bs.GetBit()) { // sps_extension_present_flag
bs.SkipBit(); // sps_range_extension_flag
bs.SkipBit(); // sps_multilayer_extension_flag
bs.SkipBit(); // sps_3d_extension_flag
bs.SkipBits(5); // sps_extension_5bits
}
widthM = width;
heightM = height;
formatM = format;
aspectRatioM = aspect_ratio;
scanM = scan;
frameRateM = frame_rate;
bitRateM = bit_rate;
frameFieldInfoPresentFlagM = frame_field_info_present_flag;
return (bs.Index() / 8);
}
int cFemonH265::parseSEI(const uint8_t *bufP, int lenP)
{
cFemonBitStream bs(bufP, lenP);
eVideoScan scan = scanM;
while ((bs.Index() * 8 + 16) < lenP) { // sei_message
int len, lastByte, payloadSize = 0, payloadType = 0;
do {
lastByte = bs.GetBits(8) & 0xFF;
payloadType += lastByte;
} while (lastByte == 0xFF); // last_payload_type_byte
do {
lastByte = bs.GetBits(8) & 0xFF;
payloadSize += lastByte;
} while (lastByte == 0xFF); // last_payload_size_byte
switch (payloadType) { // sei_payload
case 1: // pic_timing
len = payloadSize * 8;
if (frameFieldInfoPresentFlagM) {
uint8_t pic_struct = bs.GetBits(4); // pic_struct
switch (pic_struct) {
case 0: // frame
case 7: // frame doubling
case 8: // frame tripling
scan = VIDEO_SCAN_PROGRESSIVE;
break;
case 1: // top
case 2: // bottom
case 3: // top bottom
case 4: // bottom top
case 5: // top bottom top
case 6: // bottom top bottom
case 9: // top paired with previous bottom
case 10: // bottom paired with previous top
case 11: // top paired with next bottom
case 12: // bottom paired with next top
scan = VIDEO_SCAN_INTERLACED;
break;
default:
scan = VIDEO_SCAN_RESERVED;
break;
}
debug2("%s pic_struct=%d scan_type=%d", __PRETTY_FUNCTION__, pic_struct, scan);
bs.SkipBits(2); // source_scan_type
bs.SkipBit(); // duplicate_flag
len -= 7;
}
bs.SkipBits(len);
break;
default:
bs.SkipBits(payloadSize * 8);
break;
}
// force byte align
bs.ByteAlign();
}
scanM = scan;
return (bs.Index() / 8);
}