FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/cbs_h2645.c
Date: 2021-09-22 23:55:11
Exec Total Coverage
Lines: 403 640 63.0%
Branches: 248 460 53.9%

Line Branch Exec Source
1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include "libavutil/attributes.h"
20 #include "libavutil/avassert.h"
21
22 #include "bytestream.h"
23 #include "cbs.h"
24 #include "cbs_internal.h"
25 #include "cbs_h264.h"
26 #include "cbs_h265.h"
27 #include "h264.h"
28 #include "h264_sei.h"
29 #include "h2645_parse.h"
30 #include "hevc.h"
31 #include "hevc_sei.h"
32
33
34 69410 static int cbs_read_ue_golomb(CodedBitstreamContext *ctx, GetBitContext *gbc,
35 const char *name, const int *subscripts,
36 uint32_t *write_to,
37 uint32_t range_min, uint32_t range_max)
38 {
39 uint32_t value;
40 int position, i, j;
41 unsigned int k;
42 char bits[65];
43
44 69410 position = get_bits_count(gbc);
45
46
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47
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117634 if (get_bits_left(gbc) < i + 1) {
48 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid ue-golomb code at "
49 "%s: bitstream ended.\n", name);
50 return AVERROR_INVALIDDATA;
51 }
52 117634 k = get_bits1(gbc);
53
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117634 bits[i] = k ? '1' : '0';
54
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117634 if (k)
55 69410 break;
56 }
57
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69410 if (i >= 32) {
58 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid ue-golomb code at "
59 "%s: more than 31 zeroes.\n", name);
60 return AVERROR_INVALIDDATA;
61 }
62 69410 value = 1;
63
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117634 for (j = 0; j < i; j++) {
64 48224 k = get_bits1(gbc);
65
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48224 bits[i + j + 1] = k ? '1' : '0';
66 48224 value = value << 1 | k;
67 }
68 69410 bits[i + j + 1] = 0;
69 69410 --value;
70
71
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69410 if (ctx->trace_enable)
72 ff_cbs_trace_syntax_element(ctx, position, name, subscripts,
73 bits, value);
74
75
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69410 if (value < range_min || value > range_max) {
76 av_log(ctx->log_ctx, AV_LOG_ERROR, "%s out of range: "
77 "%"PRIu32", but must be in [%"PRIu32",%"PRIu32"].\n",
78 name, value, range_min, range_max);
79 return AVERROR_INVALIDDATA;
80 }
81
82 69410 *write_to = value;
83 69410 return 0;
84 }
85
86 75720 static int cbs_read_se_golomb(CodedBitstreamContext *ctx, GetBitContext *gbc,
87 const char *name, const int *subscripts,
88 int32_t *write_to,
89 int32_t range_min, int32_t range_max)
90 {
91 int32_t value;
92 int position, i, j;
93 unsigned int k;
94 uint32_t v;
95 char bits[65];
96
97 75720 position = get_bits_count(gbc);
98
99
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268098 for (i = 0; i < 32; i++) {
100
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268098 if (get_bits_left(gbc) < i + 1) {
101 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid se-golomb code at "
102 "%s: bitstream ended.\n", name);
103 return AVERROR_INVALIDDATA;
104 }
105 268098 k = get_bits1(gbc);
106
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268098 bits[i] = k ? '1' : '0';
107
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268098 if (k)
108 75720 break;
109 }
110
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75720 if (i >= 32) {
111 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid se-golomb code at "
112 "%s: more than 31 zeroes.\n", name);
113 return AVERROR_INVALIDDATA;
114 }
115 75720 v = 1;
116
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268098 for (j = 0; j < i; j++) {
117 192378 k = get_bits1(gbc);
118
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192378 bits[i + j + 1] = k ? '1' : '0';
119 192378 v = v << 1 | k;
120 }
121 75720 bits[i + j + 1] = 0;
122
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75720 if (v & 1)
123 43802 value = -(int32_t)(v / 2);
124 else
125 31918 value = v / 2;
126
127
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75720 if (ctx->trace_enable)
128 ff_cbs_trace_syntax_element(ctx, position, name, subscripts,
129 bits, value);
130
131
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75720 if (value < range_min || value > range_max) {
132 av_log(ctx->log_ctx, AV_LOG_ERROR, "%s out of range: "
133 "%"PRId32", but must be in [%"PRId32",%"PRId32"].\n",
134 name, value, range_min, range_max);
135 return AVERROR_INVALIDDATA;
136 }
137
138 75720 *write_to = value;
139 75720 return 0;
140 }
141
142 69918 static int cbs_write_ue_golomb(CodedBitstreamContext *ctx, PutBitContext *pbc,
143 const char *name, const int *subscripts,
144 uint32_t value,
145 uint32_t range_min, uint32_t range_max)
146 {
147 int len;
148
149
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69918 if (value < range_min || value > range_max) {
150 av_log(ctx->log_ctx, AV_LOG_ERROR, "%s out of range: "
151 "%"PRIu32", but must be in [%"PRIu32",%"PRIu32"].\n",
152 name, value, range_min, range_max);
153 return AVERROR_INVALIDDATA;
154 }
155
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69918 av_assert0(value != UINT32_MAX);
156
157 69918 len = av_log2(value + 1);
158
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69918 if (put_bits_left(pbc) < 2 * len + 1)
159 return AVERROR(ENOSPC);
160
161
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69918 if (ctx->trace_enable) {
162 char bits[65];
163 int i;
164
165 for (i = 0; i < len; i++)
166 bits[i] = '0';
167 bits[len] = '1';
168 for (i = 0; i < len; i++)
169 bits[len + i + 1] = (value + 1) >> (len - i - 1) & 1 ? '1' : '0';
170 bits[len + len + 1] = 0;
171
172 ff_cbs_trace_syntax_element(ctx, put_bits_count(pbc),
173 name, subscripts, bits, value);
174 }
175
176 69918 put_bits(pbc, len, 0);
177
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69918 if (len + 1 < 32)
178 69918 put_bits(pbc, len + 1, value + 1);
179 else
180 put_bits32(pbc, value + 1);
181
182 69918 return 0;
183 }
184
185 75744 static int cbs_write_se_golomb(CodedBitstreamContext *ctx, PutBitContext *pbc,
186 const char *name, const int *subscripts,
187 int32_t value,
188 int32_t range_min, int32_t range_max)
189 {
190 int len;
191 uint32_t uvalue;
192
193
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75744 if (value < range_min || value > range_max) {
194 av_log(ctx->log_ctx, AV_LOG_ERROR, "%s out of range: "
195 "%"PRId32", but must be in [%"PRId32",%"PRId32"].\n",
196 name, value, range_min, range_max);
197 return AVERROR_INVALIDDATA;
198 }
199
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75744 av_assert0(value != INT32_MIN);
200
201
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75744 if (value == 0)
202 17169 uvalue = 0;
203
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58575 else if (value > 0)
204 31928 uvalue = 2 * (uint32_t)value - 1;
205 else
206 26647 uvalue = 2 * (uint32_t)-value;
207
208 75744 len = av_log2(uvalue + 1);
209
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75744 if (put_bits_left(pbc) < 2 * len + 1)
210 return AVERROR(ENOSPC);
211
212
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75744 if (ctx->trace_enable) {
213 char bits[65];
214 int i;
215
216 for (i = 0; i < len; i++)
217 bits[i] = '0';
218 bits[len] = '1';
219 for (i = 0; i < len; i++)
220 bits[len + i + 1] = (uvalue + 1) >> (len - i - 1) & 1 ? '1' : '0';
221 bits[len + len + 1] = 0;
222
223 ff_cbs_trace_syntax_element(ctx, put_bits_count(pbc),
224 name, subscripts, bits, value);
225 }
226
227 75744 put_bits(pbc, len, 0);
228
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75744 if (len + 1 < 32)
229 75744 put_bits(pbc, len + 1, uvalue + 1);
230 else
231 put_bits32(pbc, uvalue + 1);
232
233 75744 return 0;
234 }
235
236 // payload_extension_present() - true if we are before the last 1-bit
237 // in the payload structure, which must be in the last byte.
238 5 static int cbs_h265_payload_extension_present(GetBitContext *gbc, uint32_t payload_size,
239 int cur_pos)
240 {
241 5 int bits_left = payload_size * 8 - cur_pos;
242
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5 return (bits_left > 0 &&
243 (bits_left > 7 || show_bits(gbc, bits_left) & MAX_UINT_BITS(bits_left - 1)));
244 }
245
246 #define HEADER(name) do { \
247 ff_cbs_trace_header(ctx, name); \
248 } while (0)
249
250 #define CHECK(call) do { \
251 err = (call); \
252 if (err < 0) \
253 return err; \
254 } while (0)
255
256 #define FUNC_NAME2(rw, codec, name) cbs_ ## codec ## _ ## rw ## _ ## name
257 #define FUNC_NAME1(rw, codec, name) FUNC_NAME2(rw, codec, name)
258 #define FUNC_H264(name) FUNC_NAME1(READWRITE, h264, name)
259 #define FUNC_H265(name) FUNC_NAME1(READWRITE, h265, name)
260 #define FUNC_SEI(name) FUNC_NAME1(READWRITE, sei, name)
261
262 #define SUBSCRIPTS(subs, ...) (subs > 0 ? ((int[subs + 1]){ subs, __VA_ARGS__ }) : NULL)
263
264 #define u(width, name, range_min, range_max) \
265 xu(width, name, current->name, range_min, range_max, 0, )
266 #define ub(width, name) \
267 xu(width, name, current->name, 0, MAX_UINT_BITS(width), 0, )
268 #define flag(name) ub(1, name)
269 #define ue(name, range_min, range_max) \
270 xue(name, current->name, range_min, range_max, 0, )
271 #define i(width, name, range_min, range_max) \
272 xi(width, name, current->name, range_min, range_max, 0, )
273 #define ib(width, name) \
274 xi(width, name, current->name, MIN_INT_BITS(width), MAX_INT_BITS(width), 0, )
275 #define se(name, range_min, range_max) \
276 xse(name, current->name, range_min, range_max, 0, )
277
278 #define us(width, name, range_min, range_max, subs, ...) \
279 xu(width, name, current->name, range_min, range_max, subs, __VA_ARGS__)
280 #define ubs(width, name, subs, ...) \
281 xu(width, name, current->name, 0, MAX_UINT_BITS(width), subs, __VA_ARGS__)
282 #define flags(name, subs, ...) \
283 xu(1, name, current->name, 0, 1, subs, __VA_ARGS__)
284 #define ues(name, range_min, range_max, subs, ...) \
285 xue(name, current->name, range_min, range_max, subs, __VA_ARGS__)
286 #define is(width, name, range_min, range_max, subs, ...) \
287 xi(width, name, current->name, range_min, range_max, subs, __VA_ARGS__)
288 #define ibs(width, name, subs, ...) \
289 xi(width, name, current->name, MIN_INT_BITS(width), MAX_INT_BITS(width), subs, __VA_ARGS__)
290 #define ses(name, range_min, range_max, subs, ...) \
291 xse(name, current->name, range_min, range_max, subs, __VA_ARGS__)
292
293 #define fixed(width, name, value) do { \
294 av_unused uint32_t fixed_value = value; \
295 xu(width, name, fixed_value, value, value, 0, ); \
296 } while (0)
297
298
299 #define READ
300 #define READWRITE read
301 #define RWContext GetBitContext
302
303 #define xu(width, name, var, range_min, range_max, subs, ...) do { \
304 uint32_t value; \
305 CHECK(ff_cbs_read_unsigned(ctx, rw, width, #name, \
306 SUBSCRIPTS(subs, __VA_ARGS__), \
307 &value, range_min, range_max)); \
308 var = value; \
309 } while (0)
310 #define xue(name, var, range_min, range_max, subs, ...) do { \
311 uint32_t value; \
312 CHECK(cbs_read_ue_golomb(ctx, rw, #name, \
313 SUBSCRIPTS(subs, __VA_ARGS__), \
314 &value, range_min, range_max)); \
315 var = value; \
316 } while (0)
317 #define xi(width, name, var, range_min, range_max, subs, ...) do { \
318 int32_t value; \
319 CHECK(ff_cbs_read_signed(ctx, rw, width, #name, \
320 SUBSCRIPTS(subs, __VA_ARGS__), \
321 &value, range_min, range_max)); \
322 var = value; \
323 } while (0)
324 #define xse(name, var, range_min, range_max, subs, ...) do { \
325 int32_t value; \
326 CHECK(cbs_read_se_golomb(ctx, rw, #name, \
327 SUBSCRIPTS(subs, __VA_ARGS__), \
328 &value, range_min, range_max)); \
329 var = value; \
330 } while (0)
331
332
333 #define infer(name, value) do { \
334 current->name = value; \
335 } while (0)
336
337 13901 static int cbs_h2645_read_more_rbsp_data(GetBitContext *gbc)
338 {
339 13901 int bits_left = get_bits_left(gbc);
340
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13901 if (bits_left > 8)
341 10836 return 1;
342
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3065 if (bits_left == 0)
343 return 0;
344
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3065 if (show_bits(gbc, bits_left) & MAX_UINT_BITS(bits_left - 1))
345 3 return 1;
346 3062 return 0;
347 }
348
349 #define more_rbsp_data(var) ((var) = cbs_h2645_read_more_rbsp_data(rw))
350
351 #define bit_position(rw) (get_bits_count(rw))
352 #define byte_alignment(rw) (get_bits_count(rw) % 8)
353
354 #define allocate(name, size) do { \
355 name ## _ref = av_buffer_allocz(size + \
356 AV_INPUT_BUFFER_PADDING_SIZE); \
357 if (!name ## _ref) \
358 return AVERROR(ENOMEM); \
359 name = name ## _ref->data; \
360 } while (0)
361
362 #define FUNC(name) FUNC_SEI(name)
363 #include "cbs_sei_syntax_template.c"
364 #undef FUNC
365
366 #define FUNC(name) FUNC_H264(name)
367 #include "cbs_h264_syntax_template.c"
368 #undef FUNC
369
370 #define FUNC(name) FUNC_H265(name)
371 #include "cbs_h265_syntax_template.c"
372 #undef FUNC
373
374 #undef READ
375 #undef READWRITE
376 #undef RWContext
377 #undef xu
378 #undef xi
379 #undef xue
380 #undef xse
381 #undef infer
382 #undef more_rbsp_data
383 #undef bit_position
384 #undef byte_alignment
385 #undef allocate
386
387
388 #define WRITE
389 #define READWRITE write
390 #define RWContext PutBitContext
391
392 #define xu(width, name, var, range_min, range_max, subs, ...) do { \
393 uint32_t value = var; \
394 CHECK(ff_cbs_write_unsigned(ctx, rw, width, #name, \
395 SUBSCRIPTS(subs, __VA_ARGS__), \
396 value, range_min, range_max)); \
397 } while (0)
398 #define xue(name, var, range_min, range_max, subs, ...) do { \
399 uint32_t value = var; \
400 CHECK(cbs_write_ue_golomb(ctx, rw, #name, \
401 SUBSCRIPTS(subs, __VA_ARGS__), \
402 value, range_min, range_max)); \
403 } while (0)
404 #define xi(width, name, var, range_min, range_max, subs, ...) do { \
405 int32_t value = var; \
406 CHECK(ff_cbs_write_signed(ctx, rw, width, #name, \
407 SUBSCRIPTS(subs, __VA_ARGS__), \
408 value, range_min, range_max)); \
409 } while (0)
410 #define xse(name, var, range_min, range_max, subs, ...) do { \
411 int32_t value = var; \
412 CHECK(cbs_write_se_golomb(ctx, rw, #name, \
413 SUBSCRIPTS(subs, __VA_ARGS__), \
414 value, range_min, range_max)); \
415 } while (0)
416
417 #define infer(name, value) do { \
418 if (current->name != (value)) { \
419 av_log(ctx->log_ctx, AV_LOG_ERROR, \
420 "%s does not match inferred value: " \
421 "%"PRId64", but should be %"PRId64".\n", \
422 #name, (int64_t)current->name, (int64_t)(value)); \
423 return AVERROR_INVALIDDATA; \
424 } \
425 } while (0)
426
427 #define more_rbsp_data(var) (var)
428
429 #define bit_position(rw) (put_bits_count(rw))
430 #define byte_alignment(rw) (put_bits_count(rw) % 8)
431
432 #define allocate(name, size) do { \
433 if (!name) { \
434 av_log(ctx->log_ctx, AV_LOG_ERROR, "%s must be set " \
435 "for writing.\n", #name); \
436 return AVERROR_INVALIDDATA; \
437 } \
438 } while (0)
439
440 #define FUNC(name) FUNC_SEI(name)
441 #include "cbs_sei_syntax_template.c"
442 #undef FUNC
443
444 #define FUNC(name) FUNC_H264(name)
445 #include "cbs_h264_syntax_template.c"
446 #undef FUNC
447
448 #define FUNC(name) FUNC_H265(name)
449 #include "cbs_h265_syntax_template.c"
450 #undef FUNC
451
452 #undef WRITE
453 #undef READWRITE
454 #undef RWContext
455 #undef xu
456 #undef xi
457 #undef xue
458 #undef xse
459 #undef u
460 #undef i
461 #undef flag
462 #undef ue
463 #undef se
464 #undef infer
465 #undef more_rbsp_data
466 #undef bit_position
467 #undef byte_alignment
468 #undef allocate
469
470
471 4543 static int cbs_h2645_fragment_add_nals(CodedBitstreamContext *ctx,
472 CodedBitstreamFragment *frag,
473 const H2645Packet *packet)
474 {
475 int err, i;
476
477
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19171 for (i = 0; i < packet->nb_nals; i++) {
478 14628 const H2645NAL *nal = &packet->nals[i];
479 AVBufferRef *ref;
480 14628 size_t size = nal->size;
481
482
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14628 if (nal->nuh_layer_id > 0)
483 continue;
484
485 // Remove trailing zeroes.
486
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22602 while (size > 0 && nal->data[size - 1] == 0)
487 7974 --size;
488
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14628 if (size == 0) {
489 av_log(ctx->log_ctx, AV_LOG_VERBOSE, "Discarding empty 0 NAL unit\n");
490 continue;
491 }
492
493 29256 ref = (nal->data == nal->raw_data) ? frag->data_ref
494
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14628 : packet->rbsp.rbsp_buffer_ref;
495
496 14628 err = ff_cbs_insert_unit_data(frag, -1, nal->type,
497 14628 (uint8_t*)nal->data, size, ref);
498
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14628 if (err < 0)
499 return err;
500 }
501
502 4543 return 0;
503 }
504
505 4543 static int cbs_h2645_split_fragment(CodedBitstreamContext *ctx,
506 CodedBitstreamFragment *frag,
507 int header)
508 {
509 4543 enum AVCodecID codec_id = ctx->codec->codec_id;
510 4543 CodedBitstreamH2645Context *priv = ctx->priv_data;
511 GetByteContext gbc;
512 int err;
513
514
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4543 av_assert0(frag->data && frag->nb_units == 0);
515
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4543 if (frag->data_size == 0)
516 return 0;
517
518
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4543 if (header && frag->data[0] && codec_id == AV_CODEC_ID_H264) {
519 // AVCC header.
520 size_t size, start, end;
521 int i, count, version;
522
523 priv->mp4 = 1;
524
525 bytestream2_init(&gbc, frag->data, frag->data_size);
526
527 if (bytestream2_get_bytes_left(&gbc) < 6)
528 return AVERROR_INVALIDDATA;
529
530 version = bytestream2_get_byte(&gbc);
531 if (version != 1) {
532 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid AVCC header: "
533 "first byte %u.\n", version);
534 return AVERROR_INVALIDDATA;
535 }
536
537 bytestream2_skip(&gbc, 3);
538 priv->nal_length_size = (bytestream2_get_byte(&gbc) & 3) + 1;
539
540 // SPS array.
541 count = bytestream2_get_byte(&gbc) & 0x1f;
542 start = bytestream2_tell(&gbc);
543 for (i = 0; i < count; i++) {
544 if (bytestream2_get_bytes_left(&gbc) < 2 * (count - i))
545 return AVERROR_INVALIDDATA;
546 size = bytestream2_get_be16(&gbc);
547 if (bytestream2_get_bytes_left(&gbc) < size)
548 return AVERROR_INVALIDDATA;
549 bytestream2_skip(&gbc, size);
550 }
551 end = bytestream2_tell(&gbc);
552
553 err = ff_h2645_packet_split(&priv->read_packet,
554 frag->data + start, end - start,
555 ctx->log_ctx, 1, 2, AV_CODEC_ID_H264, 1, 1);
556 if (err < 0) {
557 av_log(ctx->log_ctx, AV_LOG_ERROR, "Failed to split AVCC SPS array.\n");
558 return err;
559 }
560 err = cbs_h2645_fragment_add_nals(ctx, frag, &priv->read_packet);
561 if (err < 0)
562 return err;
563
564 // PPS array.
565 count = bytestream2_get_byte(&gbc);
566 start = bytestream2_tell(&gbc);
567 for (i = 0; i < count; i++) {
568 if (bytestream2_get_bytes_left(&gbc) < 2 * (count - i))
569 return AVERROR_INVALIDDATA;
570 size = bytestream2_get_be16(&gbc);
571 if (bytestream2_get_bytes_left(&gbc) < size)
572 return AVERROR_INVALIDDATA;
573 bytestream2_skip(&gbc, size);
574 }
575 end = bytestream2_tell(&gbc);
576
577 err = ff_h2645_packet_split(&priv->read_packet,
578 frag->data + start, end - start,
579 ctx->log_ctx, 1, 2, AV_CODEC_ID_H264, 1, 1);
580 if (err < 0) {
581 av_log(ctx->log_ctx, AV_LOG_ERROR, "Failed to split AVCC PPS array.\n");
582 return err;
583 }
584 err = cbs_h2645_fragment_add_nals(ctx, frag, &priv->read_packet);
585 if (err < 0)
586 return err;
587
588 if (bytestream2_get_bytes_left(&gbc) > 0) {
589 av_log(ctx->log_ctx, AV_LOG_WARNING, "%u bytes left at end of AVCC "
590 "header.\n", bytestream2_get_bytes_left(&gbc));
591 }
592
593
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4543 } else if (header && frag->data[0] && codec_id == AV_CODEC_ID_HEVC) {
594 // HVCC header.
595 size_t size, start, end;
596 int i, j, nb_arrays, nal_unit_type, nb_nals, version;
597
598 priv->mp4 = 1;
599
600 bytestream2_init(&gbc, frag->data, frag->data_size);
601
602 if (bytestream2_get_bytes_left(&gbc) < 23)
603 return AVERROR_INVALIDDATA;
604
605 version = bytestream2_get_byte(&gbc);
606 if (version != 1) {
607 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid HVCC header: "
608 "first byte %u.\n", version);
609 return AVERROR_INVALIDDATA;
610 }
611
612 bytestream2_skip(&gbc, 20);
613 priv->nal_length_size = (bytestream2_get_byte(&gbc) & 3) + 1;
614
615 nb_arrays = bytestream2_get_byte(&gbc);
616 for (i = 0; i < nb_arrays; i++) {
617 nal_unit_type = bytestream2_get_byte(&gbc) & 0x3f;
618 nb_nals = bytestream2_get_be16(&gbc);
619
620 start = bytestream2_tell(&gbc);
621 for (j = 0; j < nb_nals; j++) {
622 if (bytestream2_get_bytes_left(&gbc) < 2)
623 return AVERROR_INVALIDDATA;
624 size = bytestream2_get_be16(&gbc);
625 if (bytestream2_get_bytes_left(&gbc) < size)
626 return AVERROR_INVALIDDATA;
627 bytestream2_skip(&gbc, size);
628 }
629 end = bytestream2_tell(&gbc);
630
631 err = ff_h2645_packet_split(&priv->read_packet,
632 frag->data + start, end - start,
633 ctx->log_ctx, 1, 2, AV_CODEC_ID_HEVC, 1, 1);
634 if (err < 0) {
635 av_log(ctx->log_ctx, AV_LOG_ERROR, "Failed to split "
636 "HVCC array %d (%d NAL units of type %d).\n",
637 i, nb_nals, nal_unit_type);
638 return err;
639 }
640 err = cbs_h2645_fragment_add_nals(ctx, frag, &priv->read_packet);
641 if (err < 0)
642 return err;
643 }
644
645 } else {
646 // Annex B, or later MP4 with already-known parameters.
647
648 4543 err = ff_h2645_packet_split(&priv->read_packet,
649 4543 frag->data, frag->data_size,
650 ctx->log_ctx,
651 priv->mp4, priv->nal_length_size,
652 codec_id, 1, 1);
653
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4543 if (err < 0)
654 return err;
655
656 4543 err = cbs_h2645_fragment_add_nals(ctx, frag, &priv->read_packet);
657
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4543 if (err < 0)
658 return err;
659 }
660
661 4543 return 0;
662 }
663
664 #define cbs_h2645_replace_ps(h26n, ps_name, ps_var, id_element) \
665 static int cbs_h26 ## h26n ## _replace_ ## ps_var(CodedBitstreamContext *ctx, \
666 CodedBitstreamUnit *unit) \
667 { \
668 CodedBitstreamH26 ## h26n ## Context *priv = ctx->priv_data; \
669 H26 ## h26n ## Raw ## ps_name *ps_var = unit->content; \
670 unsigned int id = ps_var->id_element; \
671 int err; \
672 if (id >= FF_ARRAY_ELEMS(priv->ps_var)) { \
673 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid " #ps_name \
674 " id : %d.\n", id); \
675 return AVERROR_INVALIDDATA; \
676 } \
677 err = ff_cbs_make_unit_refcounted(ctx, unit); \
678 if (err < 0) \
679 return err; \
680 if (priv->ps_var[id] == priv->active_ ## ps_var) \
681 priv->active_ ## ps_var = NULL ; \
682 av_buffer_unref(&priv->ps_var ## _ref[id]); \
683 av_assert0(unit->content_ref); \
684 priv->ps_var ## _ref[id] = av_buffer_ref(unit->content_ref); \
685 if (!priv->ps_var ## _ref[id]) \
686 return AVERROR(ENOMEM); \
687 priv->ps_var[id] = (H26 ## h26n ## Raw ## ps_name *)priv->ps_var ## _ref[id]->data; \
688 return 0; \
689 }
690
691
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84 cbs_h2645_replace_ps(4, SPS, sps, seq_parameter_set_id)
692
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2368 cbs_h2645_replace_ps(4, PPS, pps, pic_parameter_set_id)
693
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96 cbs_h2645_replace_ps(5, VPS, vps, vps_video_parameter_set_id)
694
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100 cbs_h2645_replace_ps(5, SPS, sps, sps_seq_parameter_set_id)
695
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550 cbs_h2645_replace_ps(5, PPS, pps, pps_pic_parameter_set_id)
696
697 6796 static int cbs_h264_read_nal_unit(CodedBitstreamContext *ctx,
698 CodedBitstreamUnit *unit)
699 {
700 GetBitContext gbc;
701 int err;
702
703 6796 err = init_get_bits(&gbc, unit->data, 8 * unit->data_size);
704
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6796 if (err < 0)
705 return err;
706
707 6796 err = ff_cbs_alloc_unit_content2(ctx, unit);
708
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6796 if (err < 0)
709 return err;
710
711
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6796 switch (unit->type) {
712 42 case H264_NAL_SPS:
713 {
714 42 H264RawSPS *sps = unit->content;
715
716 42 err = cbs_h264_read_sps(ctx, &gbc, sps);
717
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42 if (err < 0)
718 return err;
719
720 42 err = cbs_h264_replace_sps(ctx, unit);
721
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42 if (err < 0)
722 return err;
723 }
724 42 break;
725
726 case H264_NAL_SPS_EXT:
727 {
728 err = cbs_h264_read_sps_extension(ctx, &gbc, unit->content);
729 if (err < 0)
730 return err;
731 }
732 break;
733
734 1184 case H264_NAL_PPS:
735 {
736 1184 H264RawPPS *pps = unit->content;
737
738 1184 err = cbs_h264_read_pps(ctx, &gbc, pps);
739
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1184 if (err < 0)
740 return err;
741
742 1184 err = cbs_h264_replace_pps(ctx, unit);
743
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1184 if (err < 0)
744 return err;
745 }
746 1184 break;
747
748 4953 case H264_NAL_SLICE:
749 case H264_NAL_IDR_SLICE:
750 case H264_NAL_AUXILIARY_SLICE:
751 {
752 4953 H264RawSlice *slice = unit->content;
753 int pos, len;
754
755 4953 err = cbs_h264_read_slice_header(ctx, &gbc, &slice->header);
756
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4953 if (err < 0)
757 return err;
758
759
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4953 if (!cbs_h2645_read_more_rbsp_data(&gbc))
760 return AVERROR_INVALIDDATA;
761
762 4953 pos = get_bits_count(&gbc);
763 4953 len = unit->data_size;
764
765 4953 slice->data_size = len - pos / 8;
766 4953 slice->data_ref = av_buffer_ref(unit->data_ref);
767
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4953 if (!slice->data_ref)
768 return AVERROR(ENOMEM);
769 4953 slice->data = unit->data + pos / 8;
770 4953 slice->data_bit_start = pos % 8;
771 }
772 4953 break;
773
774 235 case H264_NAL_AUD:
775 {
776 235 err = cbs_h264_read_aud(ctx, &gbc, unit->content);
777
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235 if (err < 0)
778 return err;
779 }
780 235 break;
781
782 345 case H264_NAL_SEI:
783 {
784 345 err = cbs_h264_read_sei(ctx, &gbc, unit->content);
785
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345 if (err < 0)
786 return err;
787 }
788 345 break;
789
790 34 case H264_NAL_FILLER_DATA:
791 {
792 34 err = cbs_h264_read_filler(ctx, &gbc, unit->content);
793
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34 if (err < 0)
794 1 return err;
795 }
796 33 break;
797
798 3 case H264_NAL_END_SEQUENCE:
799 case H264_NAL_END_STREAM:
800 {
801 3 err = (unit->type == H264_NAL_END_SEQUENCE ?
802
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3 cbs_h264_read_end_of_sequence :
803 3 cbs_h264_read_end_of_stream)(ctx, &gbc, unit->content);
804
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3 if (err < 0)
805 return err;
806 }
807 3 break;
808
809 default:
810 return AVERROR(ENOSYS);
811 }
812
813 6795 return 0;
814 }
815
816 7832 static int cbs_h265_read_nal_unit(CodedBitstreamContext *ctx,
817 CodedBitstreamUnit *unit)
818 {
819 GetBitContext gbc;
820 int err;
821
822 7832 err = init_get_bits(&gbc, unit->data, 8 * unit->data_size);
823
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7832 if (err < 0)
824 return err;
825
826 7832 err = ff_cbs_alloc_unit_content2(ctx, unit);
827
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7832 if (err < 0)
828 return err;
829
830
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7832 switch (unit->type) {
831 48 case HEVC_NAL_VPS:
832 {
833 48 H265RawVPS *vps = unit->content;
834
835 48 err = cbs_h265_read_vps(ctx, &gbc, vps);
836
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48 if (err < 0)
837 return err;
838
839 48 err = cbs_h265_replace_vps(ctx, unit);
840
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48 if (err < 0)
841 return err;
842 }
843 48 break;
844 50 case HEVC_NAL_SPS:
845 {
846 50 H265RawSPS *sps = unit->content;
847
848 50 err = cbs_h265_read_sps(ctx, &gbc, sps);
849
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50 if (err < 0)
850 return err;
851
852 50 err = cbs_h265_replace_sps(ctx, unit);
853
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50 if (err < 0)
854 return err;
855 }
856 50 break;
857
858 275 case HEVC_NAL_PPS:
859 {
860 275 H265RawPPS *pps = unit->content;
861
862 275 err = cbs_h265_read_pps(ctx, &gbc, pps);
863
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275 if (err < 0)
864 return err;
865
866 275 err = cbs_h265_replace_pps(ctx, unit);
867
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275 if (err < 0)
868 return err;
869 }
870 275 break;
871
872 5864 case HEVC_NAL_TRAIL_N:
873 case HEVC_NAL_TRAIL_R:
874 case HEVC_NAL_TSA_N:
875 case HEVC_NAL_TSA_R:
876 case HEVC_NAL_STSA_N:
877 case HEVC_NAL_STSA_R:
878 case HEVC_NAL_RADL_N:
879 case HEVC_NAL_RADL_R:
880 case HEVC_NAL_RASL_N:
881 case HEVC_NAL_RASL_R:
882 case HEVC_NAL_BLA_W_LP:
883 case HEVC_NAL_BLA_W_RADL:
884 case HEVC_NAL_BLA_N_LP:
885 case HEVC_NAL_IDR_W_RADL:
886 case HEVC_NAL_IDR_N_LP:
887 case HEVC_NAL_CRA_NUT:
888 {
889 5864 H265RawSlice *slice = unit->content;
890 int pos, len;
891
892 5864 err = cbs_h265_read_slice_segment_header(ctx, &gbc, &slice->header);
893
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5864 if (err < 0)
894 return err;
895
896
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5864 if (!cbs_h2645_read_more_rbsp_data(&gbc))
897 return AVERROR_INVALIDDATA;
898
899 5864 pos = get_bits_count(&gbc);
900 5864 len = unit->data_size;
901
902 5864 slice->data_size = len - pos / 8;
903 5864 slice->data_ref = av_buffer_ref(unit->data_ref);
904
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5864 if (!slice->data_ref)
905 return AVERROR(ENOMEM);
906 5864 slice->data = unit->data + pos / 8;
907 5864 slice->data_bit_start = pos % 8;
908 }
909 5864 break;
910
911 60 case HEVC_NAL_AUD:
912 {
913 60 err = cbs_h265_read_aud(ctx, &gbc, unit->content);
914
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60 if (err < 0)
915 return err;
916 }
917 60 break;
918
919 1535 case HEVC_NAL_SEI_PREFIX:
920 case HEVC_NAL_SEI_SUFFIX:
921 {
922 1535 err = cbs_h265_read_sei(ctx, &gbc, unit->content,
923 1535 unit->type == HEVC_NAL_SEI_PREFIX);
924
925
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1535 if (err < 0)
926 return err;
927 }
928 1535 break;
929
930 default:
931 return AVERROR(ENOSYS);
932 }
933
934 7832 return 0;
935 }
936
937 10816 static int cbs_h2645_write_slice_data(CodedBitstreamContext *ctx,
938 PutBitContext *pbc, const uint8_t *data,
939 size_t data_size, int data_bit_start)
940 {
941 10816 size_t rest = data_size - (data_bit_start + 7) / 8;
942 10816 const uint8_t *pos = data + data_bit_start / 8;
943
944
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10816 av_assert0(data_bit_start >= 0 &&
945 data_size > data_bit_start / 8);
946
947
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10816 if (data_size * 8 + 8 > put_bits_left(pbc))
948 return AVERROR(ENOSPC);
949
950
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10816 if (!rest)
951 1 goto rbsp_stop_one_bit;
952
953 // First copy the remaining bits of the first byte
954 // The above check ensures that we do not accidentally
955 // copy beyond the rbsp_stop_one_bit.
956
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10815 if (data_bit_start % 8)
957 3547 put_bits(pbc, 8 - data_bit_start % 8,
958 3547 *pos++ & MAX_UINT_BITS(8 - data_bit_start % 8));
959
960
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10815 if (put_bits_count(pbc) % 8 == 0) {
961 // If the writer is aligned at this point,
962 // memcpy can be used to improve performance.
963 // This happens normally for CABAC.
964 10815 flush_put_bits(pbc);
965 10815 memcpy(put_bits_ptr(pbc), pos, rest);
966 10815 skip_put_bytes(pbc, rest);
967 } else {
968 // If not, we have to copy manually.
969 // rbsp_stop_one_bit forces us to special-case
970 // the last byte.
971 uint8_t temp;
972 int i;
973
974 for (; rest > 4; rest -= 4, pos += 4)
975 put_bits32(pbc, AV_RB32(pos));
976
977 for (; rest > 1; rest--, pos++)
978 put_bits(pbc, 8, *pos);
979
980 rbsp_stop_one_bit:
981
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1 temp = rest ? *pos : *pos & MAX_UINT_BITS(8 - data_bit_start % 8);
982
983
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1 av_assert0(temp);
984 1 i = ff_ctz(*pos);
985 1 temp = temp >> i;
986
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1 i = rest ? (8 - i) : (8 - i - data_bit_start % 8);
987 1 put_bits(pbc, i, temp);
988
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1 if (put_bits_count(pbc) % 8)
989 put_bits(pbc, 8 - put_bits_count(pbc) % 8, 0);
990 }
991
992 10816 return 0;
993 }
994
995 6720 static int cbs_h264_write_nal_unit(CodedBitstreamContext *ctx,
996 CodedBitstreamUnit *unit,
997 PutBitContext *pbc)
998 {
999 int err;
1000
1001
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6720 switch (unit->type) {
1002 42 case H264_NAL_SPS:
1003 {
1004 42 H264RawSPS *sps = unit->content;
1005
1006 42 err = cbs_h264_write_sps(ctx, pbc, sps);
1007
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42 if (err < 0)
1008 return err;
1009
1010 42 err = cbs_h264_replace_sps(ctx, unit);
1011
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42 if (err < 0)
1012 return err;
1013 }
1014 42 break;
1015
1016 case H264_NAL_SPS_EXT:
1017 {
1018 H264RawSPSExtension *sps_ext = unit->content;
1019
1020 err = cbs_h264_write_sps_extension(ctx, pbc, sps_ext);
1021 if (err < 0)
1022 return err;
1023 }
1024 break;
1025
1026 1184 case H264_NAL_PPS:
1027 {
1028 1184 H264RawPPS *pps = unit->content;
1029
1030 1184 err = cbs_h264_write_pps(ctx, pbc, pps);
1031
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1184 if (err < 0)
1032 return err;
1033
1034 1184 err = cbs_h264_replace_pps(ctx, unit);
1035
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1184 if (err < 0)
1036 return err;
1037 }
1038 1184 break;
1039
1040 4952 case H264_NAL_SLICE:
1041 case H264_NAL_IDR_SLICE:
1042 case H264_NAL_AUXILIARY_SLICE:
1043 {
1044 4952 H264RawSlice *slice = unit->content;
1045
1046 4952 err = cbs_h264_write_slice_header(ctx, pbc, &slice->header);
1047
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4952 if (err < 0)
1048 return err;
1049
1050
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4952 if (slice->data) {
1051 4952 err = cbs_h2645_write_slice_data(ctx, pbc, slice->data,
1052 slice->data_size,
1053 slice->data_bit_start);
1054
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4952 if (err < 0)
1055 return err;
1056 } else {
1057 // No slice data - that was just the header.
1058 // (Bitstream may be unaligned!)
1059 }
1060 }
1061 4952 break;
1062
1063 195 case H264_NAL_AUD:
1064 {
1065 195 err = cbs_h264_write_aud(ctx, pbc, unit->content);
1066
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195 if (err < 0)
1067 return err;
1068 }
1069 195 break;
1070
1071 344 case H264_NAL_SEI:
1072 {
1073 344 err = cbs_h264_write_sei(ctx, pbc, unit->content);
1074
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344 if (err < 0)
1075 return err;
1076 }
1077 344 break;
1078
1079 case H264_NAL_FILLER_DATA:
1080 {
1081 err = cbs_h264_write_filler(ctx, pbc, unit->content);
1082 if (err < 0)
1083 return err;
1084 }
1085 break;
1086
1087 1 case H264_NAL_END_SEQUENCE:
1088 {
1089 1 err = cbs_h264_write_end_of_sequence(ctx, pbc, unit->content);
1090
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1 if (err < 0)
1091 return err;
1092 }
1093 1 break;
1094
1095 2 case H264_NAL_END_STREAM:
1096 {
1097 2 err = cbs_h264_write_end_of_stream(ctx, pbc, unit->content);
1098
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2 if (err < 0)
1099 return err;
1100 }
1101 2 break;
1102
1103 default:
1104 av_log(ctx->log_ctx, AV_LOG_ERROR, "Write unimplemented for "
1105 "NAL unit type %"PRIu32".\n", unit->type);
1106 return AVERROR_PATCHWELCOME;
1107 }
1108
1109 6720 return 0;
1110 }
1111
1112 7832 static int cbs_h265_write_nal_unit(CodedBitstreamContext *ctx,
1113 CodedBitstreamUnit *unit,
1114 PutBitContext *pbc)
1115 {
1116 int err;
1117
1118
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7832 switch (unit->type) {
1119 48 case HEVC_NAL_VPS:
1120 {
1121 48 H265RawVPS *vps = unit->content;
1122
1123 48 err = cbs_h265_write_vps(ctx, pbc, vps);
1124
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48 if (err < 0)
1125 return err;
1126
1127 48 err = cbs_h265_replace_vps(ctx, unit);
1128
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48 if (err < 0)
1129 return err;
1130 }
1131 48 break;
1132
1133 50 case HEVC_NAL_SPS:
1134 {
1135 50 H265RawSPS *sps = unit->content;
1136
1137 50 err = cbs_h265_write_sps(ctx, pbc, sps);
1138
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50 if (err < 0)
1139 return err;
1140
1141 50 err = cbs_h265_replace_sps(ctx, unit);
1142
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50 if (err < 0)
1143 return err;
1144 }
1145 50 break;
1146
1147 275 case HEVC_NAL_PPS:
1148 {
1149 275 H265RawPPS *pps = unit->content;
1150
1151 275 err = cbs_h265_write_pps(ctx, pbc, pps);
1152
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275 if (err < 0)
1153 return err;
1154
1155 275 err = cbs_h265_replace_pps(ctx, unit);
1156
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275 if (err < 0)
1157 return err;
1158 }
1159 275 break;
1160
1161 5864 case HEVC_NAL_TRAIL_N:
1162 case HEVC_NAL_TRAIL_R:
1163 case HEVC_NAL_TSA_N:
1164 case HEVC_NAL_TSA_R:
1165 case HEVC_NAL_STSA_N:
1166 case HEVC_NAL_STSA_R:
1167 case HEVC_NAL_RADL_N:
1168 case HEVC_NAL_RADL_R:
1169 case HEVC_NAL_RASL_N:
1170 case HEVC_NAL_RASL_R:
1171 case HEVC_NAL_BLA_W_LP:
1172 case HEVC_NAL_BLA_W_RADL:
1173 case HEVC_NAL_BLA_N_LP:
1174 case HEVC_NAL_IDR_W_RADL:
1175 case HEVC_NAL_IDR_N_LP:
1176 case HEVC_NAL_CRA_NUT:
1177 {
1178 5864 H265RawSlice *slice = unit->content;
1179
1180 5864 err = cbs_h265_write_slice_segment_header(ctx, pbc, &slice->header);
1181
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5864 if (err < 0)
1182 return err;
1183
1184
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5864 if (slice->data) {
1185 5864 err = cbs_h2645_write_slice_data(ctx, pbc, slice->data,
1186 slice->data_size,
1187 slice->data_bit_start);
1188
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5864 if (err < 0)
1189 return err;
1190 } else {
1191 // No slice data - that was just the header.
1192 }
1193 }
1194 5864 break;
1195
1196 60 case HEVC_NAL_AUD:
1197 {
1198 60 err = cbs_h265_write_aud(ctx, pbc, unit->content);
1199
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60 if (err < 0)
1200 return err;
1201 }
1202 60 break;
1203
1204 1535 case HEVC_NAL_SEI_PREFIX:
1205 case HEVC_NAL_SEI_SUFFIX:
1206 {
1207 1535 err = cbs_h265_write_sei(ctx, pbc, unit->content,
1208 1535 unit->type == HEVC_NAL_SEI_PREFIX);
1209
1210
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1535 if (err < 0)
1211 return err;
1212 }
1213 1535 break;
1214
1215 default:
1216 av_log(ctx->log_ctx, AV_LOG_ERROR, "Write unimplemented for "
1217 "NAL unit type %"PRIu32".\n", unit->type);
1218 return AVERROR_PATCHWELCOME;
1219 }
1220
1221 7832 return 0;
1222 }
1223
1224 14552 static int cbs_h2645_unit_requires_zero_byte(enum AVCodecID codec_id,
1225 CodedBitstreamUnitType type,
1226 int nal_unit_index)
1227 {
1228 // Section B.1.2 in H.264, section B.2.2 in H.265.
1229
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14552 if (nal_unit_index == 0) {
1230 // Assume that this is the first NAL unit in an access unit.
1231 4542 return 1;
1232 }
1233
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10010 if (codec_id == AV_CODEC_ID_H264)
1234
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4330 return type == H264_NAL_SPS || type == H264_NAL_PPS;
1235
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5680 if (codec_id == AV_CODEC_ID_HEVC)
1236
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5680 return type == HEVC_NAL_VPS || type == HEVC_NAL_SPS || type == HEVC_NAL_PPS;
1237 return 0;
1238 }
1239
1240 4542 static int cbs_h2645_assemble_fragment(CodedBitstreamContext *ctx,
1241 CodedBitstreamFragment *frag)
1242 {
1243 uint8_t *data;
1244 size_t max_size, dp, sp;
1245 int err, i, zero_run;
1246
1247
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19094 for (i = 0; i < frag->nb_units; i++) {
1248 // Data should already all have been written when we get here.
1249
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14552 av_assert0(frag->units[i].data);
1250 }
1251
1252 4542 max_size = 0;
1253
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19094 for (i = 0; i < frag->nb_units; i++) {
1254 // Start code + content with worst-case emulation prevention.
1255 14552 max_size += 4 + frag->units[i].data_size * 3 / 2;
1256 }
1257
1258 4542 data = av_realloc(NULL, max_size + AV_INPUT_BUFFER_PADDING_SIZE);
1259
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4542 if (!data)
1260 return AVERROR(ENOMEM);
1261
1262 4542 dp = 0;
1263
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19094 for (i = 0; i < frag->nb_units; i++) {
1264 14552 CodedBitstreamUnit *unit = &frag->units[i];
1265
1266
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14552 if (unit->data_bit_padding > 0) {
1267 if (i < frag->nb_units - 1)
1268 av_log(ctx->log_ctx, AV_LOG_WARNING, "Probably invalid "
1269 "unaligned padding on non-final NAL unit.\n");
1270 else
1271 frag->data_bit_padding = unit->data_bit_padding;
1272 }
1273
1274
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14552 if (cbs_h2645_unit_requires_zero_byte(ctx->codec->codec_id, unit->type, i)) {
1275 // zero_byte
1276 5068 data[dp++] = 0;
1277 }
1278 // start_code_prefix_one_3bytes
1279 14552 data[dp++] = 0;
1280 14552 data[dp++] = 0;
1281 14552 data[dp++] = 1;
1282
1283 14552 zero_run = 0;
1284
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10846393 for (sp = 0; sp < unit->data_size; sp++) {
1285
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10831841 if (zero_run < 2) {
1286
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10827719 if (unit->data[sp] == 0)
1287 107168 ++zero_run;
1288 else
1289 10720551 zero_run = 0;
1290 } else {
1291
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4122 if ((unit->data[sp] & ~3) == 0) {
1292 // emulation_prevention_three_byte
1293 797 data[dp++] = 3;
1294 }
1295 4122 zero_run = unit->data[sp] == 0;
1296 }
1297 10831841 data[dp++] = unit->data[sp];
1298 }
1299 }
1300
1301
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4542 av_assert0(dp <= max_size);
1302 4542 err = av_reallocp(&data, dp + AV_INPUT_BUFFER_PADDING_SIZE);
1303
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4542 if (err)
1304 return err;
1305 4542 memset(data + dp, 0, AV_INPUT_BUFFER_PADDING_SIZE);
1306
1307 4542 frag->data_ref = av_buffer_create(data, dp + AV_INPUT_BUFFER_PADDING_SIZE,
1308 NULL, NULL, 0);
1309
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4542 if (!frag->data_ref) {
1310 av_freep(&data);
1311 return AVERROR(ENOMEM);
1312 }
1313
1314 4542 frag->data = data;
1315 4542 frag->data_size = dp;
1316
1317 4542 return 0;
1318 }
1319
1320 static void cbs_h264_flush(CodedBitstreamContext *ctx)
1321 {
1322 CodedBitstreamH264Context *h264 = ctx->priv_data;
1323
1324 for (int i = 0; i < FF_ARRAY_ELEMS(h264->sps); i++) {
1325 av_buffer_unref(&h264->sps_ref[i]);
1326 h264->sps[i] = NULL;
1327 }
1328 for (int i = 0; i < FF_ARRAY_ELEMS(h264->pps); i++) {
1329 av_buffer_unref(&h264->pps_ref[i]);
1330 h264->pps[i] = NULL;
1331 }
1332
1333 h264->active_sps = NULL;
1334 h264->active_pps = NULL;
1335 h264->last_slice_nal_unit_type = 0;
1336 }
1337
1338 32 static void cbs_h264_close(CodedBitstreamContext *ctx)
1339 {
1340 32 CodedBitstreamH264Context *h264 = ctx->priv_data;
1341 int i;
1342
1343 32 ff_h2645_packet_uninit(&h264->common.read_packet);
1344
1345
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1056 for (i = 0; i < FF_ARRAY_ELEMS(h264->sps); i++)
1346 1024 av_buffer_unref(&h264->sps_ref[i]);
1347
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8224 for (i = 0; i < FF_ARRAY_ELEMS(h264->pps); i++)
1348 8192 av_buffer_unref(&h264->pps_ref[i]);
1349 32 }
1350
1351 static void cbs_h265_flush(CodedBitstreamContext *ctx)
1352 {
1353 CodedBitstreamH265Context *h265 = ctx->priv_data;
1354
1355 for (int i = 0; i < FF_ARRAY_ELEMS(h265->vps); i++) {
1356 av_buffer_unref(&h265->vps_ref[i]);
1357 h265->vps[i] = NULL;
1358 }
1359 for (int i = 0; i < FF_ARRAY_ELEMS(h265->sps); i++) {
1360 av_buffer_unref(&h265->sps_ref[i]);
1361 h265->sps[i] = NULL;
1362 }
1363 for (int i = 0; i < FF_ARRAY_ELEMS(h265->pps); i++) {
1364 av_buffer_unref(&h265->pps_ref[i]);
1365 h265->pps[i] = NULL;
1366 }
1367
1368 h265->active_vps = NULL;
1369 h265->active_sps = NULL;
1370 h265->active_pps = NULL;
1371 }
1372
1373 40 static void cbs_h265_close(CodedBitstreamContext *ctx)
1374 {
1375 40 CodedBitstreamH265Context *h265 = ctx->priv_data;
1376 int i;
1377
1378 40 ff_h2645_packet_uninit(&h265->common.read_packet);
1379
1380
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680 for (i = 0; i < FF_ARRAY_ELEMS(h265->vps); i++)
1381 640 av_buffer_unref(&h265->vps_ref[i]);
1382
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680 for (i = 0; i < FF_ARRAY_ELEMS(h265->sps); i++)
1383 640 av_buffer_unref(&h265->sps_ref[i]);
1384
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2600 for (i = 0; i < FF_ARRAY_ELEMS(h265->pps); i++)
1385 2560 av_buffer_unref(&h265->pps_ref[i]);
1386 40 }
1387
1388 345 static void cbs_h264_free_sei(void *opaque, uint8_t *content)
1389 {
1390 345 H264RawSEI *sei = (H264RawSEI*)content;
1391 345 ff_cbs_sei_free_message_list(&sei->message_list);
1392 345 av_free(content);
1393 345 }
1394
1395 static const CodedBitstreamUnitTypeDescriptor cbs_h264_unit_types[] = {
1396 CBS_UNIT_TYPE_POD(H264_NAL_SPS, H264RawSPS),
1397 CBS_UNIT_TYPE_POD(H264_NAL_SPS_EXT, H264RawSPSExtension),
1398
1399 CBS_UNIT_TYPE_INTERNAL_REF(H264_NAL_PPS, H264RawPPS, slice_group_id),
1400
1401 {
1402 .nb_unit_types = 3,
1403 .unit_types = {
1404 H264_NAL_IDR_SLICE,
1405 H264_NAL_SLICE,
1406 H264_NAL_AUXILIARY_SLICE,
1407 },
1408 .content_type = CBS_CONTENT_TYPE_INTERNAL_REFS,
1409 .content_size = sizeof(H264RawSlice),
1410 .nb_ref_offsets = 1,
1411 .ref_offsets = { offsetof(H264RawSlice, data) },
1412 },
1413
1414 CBS_UNIT_TYPE_POD(H264_NAL_AUD, H264RawAUD),
1415 CBS_UNIT_TYPE_POD(H264_NAL_FILLER_DATA, H264RawFiller),
1416 CBS_UNIT_TYPE_POD(H264_NAL_END_SEQUENCE, H264RawNALUnitHeader),
1417 CBS_UNIT_TYPE_POD(H264_NAL_END_STREAM, H264RawNALUnitHeader),
1418
1419 CBS_UNIT_TYPE_COMPLEX(H264_NAL_SEI, H264RawSEI, &cbs_h264_free_sei),
1420
1421 CBS_UNIT_TYPE_END_OF_LIST
1422 };
1423
1424 1535 static void cbs_h265_free_sei(void *opaque, uint8_t *content)
1425 {
1426 1535 H265RawSEI *sei = (H265RawSEI*)content;
1427 1535 ff_cbs_sei_free_message_list(&sei->message_list);
1428 1535 av_free(content);
1429 1535 }
1430
1431 static const CodedBitstreamUnitTypeDescriptor cbs_h265_unit_types[] = {
1432 CBS_UNIT_TYPE_INTERNAL_REF(HEVC_NAL_VPS, H265RawVPS, extension_data.data),
1433 CBS_UNIT_TYPE_INTERNAL_REF(HEVC_NAL_SPS, H265RawSPS, extension_data.data),
1434 CBS_UNIT_TYPE_INTERNAL_REF(HEVC_NAL_PPS, H265RawPPS, extension_data.data),
1435
1436 CBS_UNIT_TYPE_POD(HEVC_NAL_AUD, H265RawAUD),
1437
1438 {
1439 // Slices of non-IRAP pictures.
1440 .nb_unit_types = CBS_UNIT_TYPE_RANGE,
1441 .unit_type_range_start = HEVC_NAL_TRAIL_N,
1442 .unit_type_range_end = HEVC_NAL_RASL_R,
1443
1444 .content_type = CBS_CONTENT_TYPE_INTERNAL_REFS,
1445 .content_size = sizeof(H265RawSlice),
1446 .nb_ref_offsets = 1,
1447 .ref_offsets = { offsetof(H265RawSlice, data) },
1448 },
1449
1450 {
1451 // Slices of IRAP pictures.
1452 .nb_unit_types = CBS_UNIT_TYPE_RANGE,
1453 .unit_type_range_start = HEVC_NAL_BLA_W_LP,
1454 .unit_type_range_end = HEVC_NAL_CRA_NUT,
1455
1456 .content_type = CBS_CONTENT_TYPE_INTERNAL_REFS,
1457 .content_size = sizeof(H265RawSlice),
1458 .nb_ref_offsets = 1,
1459 .ref_offsets = { offsetof(H265RawSlice, data) },
1460 },
1461
1462 {
1463 .nb_unit_types = 2,
1464 .unit_types = {
1465 HEVC_NAL_SEI_PREFIX,
1466 HEVC_NAL_SEI_SUFFIX
1467 },
1468 .content_type = CBS_CONTENT_TYPE_COMPLEX,
1469 .content_size = sizeof(H265RawSEI),
1470 .content_free = &cbs_h265_free_sei,
1471 },
1472
1473 CBS_UNIT_TYPE_END_OF_LIST
1474 };
1475
1476 const CodedBitstreamType ff_cbs_type_h264 = {
1477 .codec_id = AV_CODEC_ID_H264,
1478
1479 .priv_data_size = sizeof(CodedBitstreamH264Context),
1480
1481 .unit_types = cbs_h264_unit_types,
1482
1483 .split_fragment = &cbs_h2645_split_fragment,
1484 .read_unit = &cbs_h264_read_nal_unit,
1485 .write_unit = &cbs_h264_write_nal_unit,
1486 .assemble_fragment = &cbs_h2645_assemble_fragment,
1487
1488 .flush = &cbs_h264_flush,
1489 .close = &cbs_h264_close,
1490 };
1491
1492 const CodedBitstreamType ff_cbs_type_h265 = {
1493 .codec_id = AV_CODEC_ID_HEVC,
1494
1495 .priv_data_size = sizeof(CodedBitstreamH265Context),
1496
1497 .unit_types = cbs_h265_unit_types,
1498
1499 .split_fragment = &cbs_h2645_split_fragment,
1500 .read_unit = &cbs_h265_read_nal_unit,
1501 .write_unit = &cbs_h265_write_nal_unit,
1502 .assemble_fragment = &cbs_h2645_assemble_fragment,
1503
1504 .flush = &cbs_h265_flush,
1505 .close = &cbs_h265_close,
1506 };
1507
1508 static const SEIMessageTypeDescriptor cbs_sei_common_types[] = {
1509 {
1510 SEI_TYPE_FILLER_PAYLOAD,
1511 1, 1,
1512 sizeof(SEIRawFillerPayload),
1513 SEI_MESSAGE_RW(sei, filler_payload),
1514 },
1515 {
1516 SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35,
1517 1, 1,
1518 sizeof(SEIRawUserDataRegistered),
1519 SEI_MESSAGE_RW(sei, user_data_registered),
1520 },
1521 {
1522 SEI_TYPE_USER_DATA_UNREGISTERED,
1523 1, 1,
1524 sizeof(SEIRawUserDataUnregistered),
1525 SEI_MESSAGE_RW(sei, user_data_unregistered),
1526 },
1527 {
1528 SEI_TYPE_MASTERING_DISPLAY_COLOUR_VOLUME,
1529 1, 0,
1530 sizeof(SEIRawMasteringDisplayColourVolume),
1531 SEI_MESSAGE_RW(sei, mastering_display_colour_volume),
1532 },
1533 {
1534 SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO,
1535 1, 0,
1536 sizeof(SEIRawContentLightLevelInfo),
1537 SEI_MESSAGE_RW(sei, content_light_level_info),
1538 },
1539 {
1540 SEI_TYPE_ALTERNATIVE_TRANSFER_CHARACTERISTICS,
1541 1, 0,
1542 sizeof(SEIRawAlternativeTransferCharacteristics),
1543 SEI_MESSAGE_RW(sei, alternative_transfer_characteristics),
1544 },
1545 SEI_MESSAGE_TYPE_END,
1546 };
1547
1548 static const SEIMessageTypeDescriptor cbs_sei_h264_types[] = {
1549 {
1550 SEI_TYPE_BUFFERING_PERIOD,
1551 1, 0,
1552 sizeof(H264RawSEIBufferingPeriod),
1553 SEI_MESSAGE_RW(h264, sei_buffering_period),
1554 },
1555 {
1556 SEI_TYPE_PIC_TIMING,
1557 1, 0,
1558 sizeof(H264RawSEIPicTiming),
1559 SEI_MESSAGE_RW(h264, sei_pic_timing),
1560 },
1561 {
1562 SEI_TYPE_PAN_SCAN_RECT,
1563 1, 0,
1564 sizeof(H264RawSEIPanScanRect),
1565 SEI_MESSAGE_RW(h264, sei_pan_scan_rect),
1566 },
1567 {
1568 SEI_TYPE_RECOVERY_POINT,
1569 1, 0,
1570 sizeof(H264RawSEIRecoveryPoint),
1571 SEI_MESSAGE_RW(h264, sei_recovery_point),
1572 },
1573 {
1574 SEI_TYPE_FILM_GRAIN_CHARACTERISTICS,
1575 1, 0,
1576 sizeof(H264RawFilmGrainCharacteristics),
1577 SEI_MESSAGE_RW(h264, film_grain_characteristics),
1578 },
1579 {
1580 SEI_TYPE_DISPLAY_ORIENTATION,
1581 1, 0,
1582 sizeof(H264RawSEIDisplayOrientation),
1583 SEI_MESSAGE_RW(h264, sei_display_orientation),
1584 },
1585 SEI_MESSAGE_TYPE_END
1586 };
1587
1588 static const SEIMessageTypeDescriptor cbs_sei_h265_types[] = {
1589 {
1590 SEI_TYPE_BUFFERING_PERIOD,
1591 1, 0,
1592 sizeof(H265RawSEIBufferingPeriod),
1593 SEI_MESSAGE_RW(h265, sei_buffering_period),
1594 },
1595 {
1596 SEI_TYPE_PIC_TIMING,
1597 1, 0,
1598 sizeof(H265RawSEIPicTiming),
1599 SEI_MESSAGE_RW(h265, sei_pic_timing),
1600 },
1601 {
1602 SEI_TYPE_PAN_SCAN_RECT,
1603 1, 0,
1604 sizeof(H265RawSEIPanScanRect),
1605 SEI_MESSAGE_RW(h265, sei_pan_scan_rect),
1606 },
1607 {
1608 SEI_TYPE_RECOVERY_POINT,
1609 1, 0,
1610 sizeof(H265RawSEIRecoveryPoint),
1611 SEI_MESSAGE_RW(h265, sei_recovery_point),
1612 },
1613 {
1614 SEI_TYPE_FILM_GRAIN_CHARACTERISTICS,
1615 1, 0,
1616 sizeof(H265RawFilmGrainCharacteristics),
1617 SEI_MESSAGE_RW(h265, film_grain_characteristics),
1618 },
1619 {
1620 SEI_TYPE_DISPLAY_ORIENTATION,
1621 1, 0,
1622 sizeof(H265RawSEIDisplayOrientation),
1623 SEI_MESSAGE_RW(h265, sei_display_orientation),
1624 },
1625 {
1626 SEI_TYPE_ACTIVE_PARAMETER_SETS,
1627 1, 0,
1628 sizeof(H265RawSEIActiveParameterSets),
1629 SEI_MESSAGE_RW(h265, sei_active_parameter_sets),
1630 },
1631 {
1632 SEI_TYPE_DECODED_PICTURE_HASH,
1633 0, 1,
1634 sizeof(H265RawSEIDecodedPictureHash),
1635 SEI_MESSAGE_RW(h265, sei_decoded_picture_hash),
1636 },
1637 {
1638 SEI_TYPE_TIME_CODE,
1639 1, 0,
1640 sizeof(H265RawSEITimeCode),
1641 SEI_MESSAGE_RW(h265, sei_time_code),
1642 },
1643 {
1644 SEI_TYPE_ALPHA_CHANNEL_INFO,
1645 1, 0,
1646 sizeof(H265RawSEIAlphaChannelInfo),
1647 SEI_MESSAGE_RW(h265, sei_alpha_channel_info),
1648 },
1649 SEI_MESSAGE_TYPE_END
1650 };
1651
1652 5698 const SEIMessageTypeDescriptor *ff_cbs_sei_find_type(CodedBitstreamContext *ctx,
1653 int payload_type)
1654 {
1655 const SEIMessageTypeDescriptor *codec_list;
1656 int i;
1657
1658
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39502 for (i = 0; cbs_sei_common_types[i].type >= 0; i++) {
1659
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33882 if (cbs_sei_common_types[i].type == payload_type)
1660 78 return &cbs_sei_common_types[i];
1661 }
1662
1663
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5620 switch (ctx->codec->codec_id) {
1664 1015 case AV_CODEC_ID_H264:
1665 1015 codec_list = cbs_sei_h264_types;
1666 1015 break;
1667 4605 case AV_CODEC_ID_H265:
1668 4605 codec_list = cbs_sei_h265_types;
1669 4605 break;
1670 default:
1671 return NULL;
1672 }
1673
1674
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35993 for (i = 0; codec_list[i].type >= 0; i++) {
1675
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35978 if (codec_list[i].type == payload_type)
1676 5605 return &codec_list[i];
1677 }
1678
1679 15 return NULL;
1680 }
1681