FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/cbs_h2645.c
Date: 2023-06-04 16:45:34
Exec Total Coverage
Lines: 444 640 69.4%
Functions: 25 27 92.6%
Branches: 269 450 59.8%
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 "h2645_parse.h"
29 #include "hevc.h"
30
31
32 73240 static int cbs_read_ue_golomb(CodedBitstreamContext *ctx, GetBitContext *gbc,
33 const char *name, const int *subscripts,
34 uint32_t *write_to,
35 uint32_t range_min, uint32_t range_max)
36 {
37 uint32_t value;
38 int position, i, j;
39 unsigned int k;
40 char bits[65];
41
42 73240 position = get_bits_count(gbc);
43
44
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45
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 124496 if (get_bits_left(gbc) < i + 1) {
46 ✗ av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid ue-golomb code at "
47 "%s: bitstream ended.\n", name);
48 ✗ return AVERROR_INVALIDDATA;
49 }
50 124496 k = get_bits1(gbc);
51
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 124496 bits[i] = k ? '1' : '0';
52
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 124496 if (k)
53 73240 break;
54 }
55
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 73240 if (i >= 32) {
56 ✗ av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid ue-golomb code at "
57 "%s: more than 31 zeroes.\n", name);
58 ✗ return AVERROR_INVALIDDATA;
59 }
60 73240 value = 1;
61
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 124496 for (j = 0; j < i; j++) {
62 51256 k = get_bits1(gbc);
63
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 51256 bits[i + j + 1] = k ? '1' : '0';
64 51256 value = value << 1 | k;
65 }
66 73240 bits[i + j + 1] = 0;
67 73240 --value;
68
69
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 73240 if (ctx->trace_enable)
70 ✗ ff_cbs_trace_syntax_element(ctx, position, name, subscripts,
71 bits, value);
72
73
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 73240 if (value < range_min || value > range_max) {
74 ✗ av_log(ctx->log_ctx, AV_LOG_ERROR, "%s out of range: "
75 "%"PRIu32", but must be in [%"PRIu32",%"PRIu32"].\n",
76 name, value, range_min, range_max);
77 ✗ return AVERROR_INVALIDDATA;
78 }
79
80 73240 *write_to = value;
81 73240 return 0;
82 }
83
84 77271 static int cbs_read_se_golomb(CodedBitstreamContext *ctx, GetBitContext *gbc,
85 const char *name, const int *subscripts,
86 int32_t *write_to,
87 int32_t range_min, int32_t range_max)
88 {
89 int32_t value;
90 int position, i, j;
91 unsigned int k;
92 uint32_t v;
93 char bits[65];
94
95 77271 position = get_bits_count(gbc);
96
97
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 272093 for (i = 0; i < 32; i++) {
98
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 272093 if (get_bits_left(gbc) < i + 1) {
99 ✗ av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid se-golomb code at "
100 "%s: bitstream ended.\n", name);
101 ✗ return AVERROR_INVALIDDATA;
102 }
103 272093 k = get_bits1(gbc);
104
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 272093 bits[i] = k ? '1' : '0';
105
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 272093 if (k)
106 77271 break;
107 }
108
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 77271 if (i >= 32) {
109 ✗ av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid se-golomb code at "
110 "%s: more than 31 zeroes.\n", name);
111 ✗ return AVERROR_INVALIDDATA;
112 }
113 77271 v = 1;
114
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 272093 for (j = 0; j < i; j++) {
115 194822 k = get_bits1(gbc);
116
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 194822 bits[i + j + 1] = k ? '1' : '0';
117 194822 v = v << 1 | k;
118 }
119 77271 bits[i + j + 1] = 0;
120
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 77271 if (v & 1)
121 44736 value = -(int32_t)(v / 2);
122 else
123 32535 value = v / 2;
124
125
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 77271 if (ctx->trace_enable)
126 ✗ ff_cbs_trace_syntax_element(ctx, position, name, subscripts,
127 bits, value);
128
129
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 77271 if (value < range_min || value > range_max) {
130 ✗ av_log(ctx->log_ctx, AV_LOG_ERROR, "%s out of range: "
131 "%"PRId32", but must be in [%"PRId32",%"PRId32"].\n",
132 name, value, range_min, range_max);
133 ✗ return AVERROR_INVALIDDATA;
134 }
135
136 77271 *write_to = value;
137 77271 return 0;
138 }
139
140 74616 static int cbs_write_ue_golomb(CodedBitstreamContext *ctx, PutBitContext *pbc,
141 const char *name, const int *subscripts,
142 uint32_t value,
143 uint32_t range_min, uint32_t range_max)
144 {
145 int len;
146
147
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 74616 if (value < range_min || value > range_max) {
148 ✗ av_log(ctx->log_ctx, AV_LOG_ERROR, "%s out of range: "
149 "%"PRIu32", but must be in [%"PRIu32",%"PRIu32"].\n",
150 name, value, range_min, range_max);
151 ✗ return AVERROR_INVALIDDATA;
152 }
153
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 74616 av_assert0(value != UINT32_MAX);
154
155 74616 len = av_log2(value + 1);
156
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 74616 if (put_bits_left(pbc) < 2 * len + 1)
157 ✗ return AVERROR(ENOSPC);
158
159
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 74616 if (ctx->trace_enable) {
160 char bits[65];
161 int i;
162
163 ✗ for (i = 0; i < len; i++)
164 ✗ bits[i] = '0';
165 ✗ bits[len] = '1';
166 ✗ for (i = 0; i < len; i++)
167 ✗ bits[len + i + 1] = (value + 1) >> (len - i - 1) & 1 ? '1' : '0';
168 ✗ bits[len + len + 1] = 0;
169
170 ✗ ff_cbs_trace_syntax_element(ctx, put_bits_count(pbc),
171 name, subscripts, bits, value);
172 }
173
174 74616 put_bits(pbc, len, 0);
175
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 74616 if (len + 1 < 32)
176 74616 put_bits(pbc, len + 1, value + 1);
177 else
178 ✗ put_bits32(pbc, value + 1);
179
180 74616 return 0;
181 }
182
183 77295 static int cbs_write_se_golomb(CodedBitstreamContext *ctx, PutBitContext *pbc,
184 const char *name, const int *subscripts,
185 int32_t value,
186 int32_t range_min, int32_t range_max)
187 {
188 int len;
189 uint32_t uvalue;
190
191
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 77295 if (value < range_min || value > range_max) {
192 ✗ av_log(ctx->log_ctx, AV_LOG_ERROR, "%s out of range: "
193 "%"PRId32", but must be in [%"PRId32",%"PRId32"].\n",
194 name, value, range_min, range_max);
195 ✗ return AVERROR_INVALIDDATA;
196 }
197
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 77295 av_assert0(value != INT32_MIN);
198
199
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 77295 if (value == 0)
200 17899 uvalue = 0;
201
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 59396 else if (value > 0)
202 32637 uvalue = 2 * (uint32_t)value - 1;
203 else
204 26759 uvalue = 2 * (uint32_t)-value;
205
206 77295 len = av_log2(uvalue + 1);
207
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 77295 if (put_bits_left(pbc) < 2 * len + 1)
208 ✗ return AVERROR(ENOSPC);
209
210
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 77295 if (ctx->trace_enable) {
211 char bits[65];
212 int i;
213
214 ✗ for (i = 0; i < len; i++)
215 ✗ bits[i] = '0';
216 ✗ bits[len] = '1';
217 ✗ for (i = 0; i < len; i++)
218 ✗ bits[len + i + 1] = (uvalue + 1) >> (len - i - 1) & 1 ? '1' : '0';
219 ✗ bits[len + len + 1] = 0;
220
221 ✗ ff_cbs_trace_syntax_element(ctx, put_bits_count(pbc),
222 name, subscripts, bits, value);
223 }
224
225 77295 put_bits(pbc, len, 0);
226
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 77295 if (len + 1 < 32)
227 77295 put_bits(pbc, len + 1, uvalue + 1);
228 else
229 ✗ put_bits32(pbc, uvalue + 1);
230
231 77295 return 0;
232 }
233
234 // payload_extension_present() - true if we are before the last 1-bit
235 // in the payload structure, which must be in the last byte.
236 5 static int cbs_h265_payload_extension_present(GetBitContext *gbc, uint32_t payload_size,
237 int cur_pos)
238 {
239 5 int bits_left = payload_size * 8 - cur_pos;
240
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 5 return (bits_left > 0 &&
241 ✗ (bits_left > 7 || show_bits(gbc, bits_left) & MAX_UINT_BITS(bits_left - 1)));
242 }
243
244 #define HEADER(name) do { \
245 ff_cbs_trace_header(ctx, name); \
246 } while (0)
247
248 #define CHECK(call) do { \
249 err = (call); \
250 if (err < 0) \
251 return err; \
252 } while (0)
253
254 #define FUNC_NAME2(rw, codec, name) cbs_ ## codec ## _ ## rw ## _ ## name
255 #define FUNC_NAME1(rw, codec, name) FUNC_NAME2(rw, codec, name)
256 #define FUNC_H264(name) FUNC_NAME1(READWRITE, h264, name)
257 #define FUNC_H265(name) FUNC_NAME1(READWRITE, h265, name)
258 #define FUNC_SEI(name) FUNC_NAME1(READWRITE, sei, name)
259
260 #define SUBSCRIPTS(subs, ...) (subs > 0 ? ((int[subs + 1]){ subs, __VA_ARGS__ }) : NULL)
261
262 #define u(width, name, range_min, range_max) \
263 xu(width, name, current->name, range_min, range_max, 0, )
264 #define ub(width, name) \
265 xu(width, name, current->name, 0, MAX_UINT_BITS(width), 0, )
266 #define flag(name) ub(1, name)
267 #define ue(name, range_min, range_max) \
268 xue(name, current->name, range_min, range_max, 0, )
269 #define i(width, name, range_min, range_max) \
270 xi(width, name, current->name, range_min, range_max, 0, )
271 #define ib(width, name) \
272 xi(width, name, current->name, MIN_INT_BITS(width), MAX_INT_BITS(width), 0, )
273 #define se(name, range_min, range_max) \
274 xse(name, current->name, range_min, range_max, 0, )
275
276 #define us(width, name, range_min, range_max, subs, ...) \
277 xu(width, name, current->name, range_min, range_max, subs, __VA_ARGS__)
278 #define ubs(width, name, subs, ...) \
279 xu(width, name, current->name, 0, MAX_UINT_BITS(width), subs, __VA_ARGS__)
280 #define flags(name, subs, ...) \
281 xu(1, name, current->name, 0, 1, subs, __VA_ARGS__)
282 #define ues(name, range_min, range_max, subs, ...) \
283 xue(name, current->name, range_min, range_max, subs, __VA_ARGS__)
284 #define is(width, name, range_min, range_max, subs, ...) \
285 xi(width, name, current->name, range_min, range_max, subs, __VA_ARGS__)
286 #define ibs(width, name, subs, ...) \
287 xi(width, name, current->name, MIN_INT_BITS(width), MAX_INT_BITS(width), subs, __VA_ARGS__)
288 #define ses(name, range_min, range_max, subs, ...) \
289 xse(name, current->name, range_min, range_max, subs, __VA_ARGS__)
290
291 #define fixed(width, name, value) do { \
292 av_unused uint32_t fixed_value = value; \
293 xu(width, name, fixed_value, value, value, 0, ); \
294 } while (0)
295
296
297 #define READ
298 #define READWRITE read
299 #define RWContext GetBitContext
300
301 #define xu(width, name, var, range_min, range_max, subs, ...) do { \
302 uint32_t value; \
303 CHECK(ff_cbs_read_unsigned(ctx, rw, width, #name, \
304 SUBSCRIPTS(subs, __VA_ARGS__), \
305 &value, range_min, range_max)); \
306 var = value; \
307 } while (0)
308 #define xue(name, var, range_min, range_max, subs, ...) do { \
309 uint32_t value; \
310 CHECK(cbs_read_ue_golomb(ctx, rw, #name, \
311 SUBSCRIPTS(subs, __VA_ARGS__), \
312 &value, range_min, range_max)); \
313 var = value; \
314 } while (0)
315 #define xi(width, name, var, range_min, range_max, subs, ...) do { \
316 int32_t value; \
317 CHECK(ff_cbs_read_signed(ctx, rw, width, #name, \
318 SUBSCRIPTS(subs, __VA_ARGS__), \
319 &value, range_min, range_max)); \
320 var = value; \
321 } while (0)
322 #define xse(name, var, range_min, range_max, subs, ...) do { \
323 int32_t value; \
324 CHECK(cbs_read_se_golomb(ctx, rw, #name, \
325 SUBSCRIPTS(subs, __VA_ARGS__), \
326 &value, range_min, range_max)); \
327 var = value; \
328 } while (0)
329
330
331 #define infer(name, value) do { \
332 current->name = value; \
333 } while (0)
334
335 14740 static int cbs_h2645_read_more_rbsp_data(GetBitContext *gbc)
336 {
337 14740 int bits_left = get_bits_left(gbc);
338
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 14740 if (bits_left > 8)
339 11354 return 1;
340
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 3386 if (bits_left == 0)
341 ✗ return 0;
342
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 3386 if (show_bits(gbc, bits_left) & MAX_UINT_BITS(bits_left - 1))
343 3 return 1;
344 3383 return 0;
345 }
346
347 #define more_rbsp_data(var) ((var) = cbs_h2645_read_more_rbsp_data(rw))
348
349 #define bit_position(rw) (get_bits_count(rw))
350 #define byte_alignment(rw) (get_bits_count(rw) % 8)
351
352 #define allocate(name, size) do { \
353 name ## _ref = av_buffer_allocz(size + \
354 AV_INPUT_BUFFER_PADDING_SIZE); \
355 if (!name ## _ref) \
356 return AVERROR(ENOMEM); \
357 name = name ## _ref->data; \
358 } while (0)
359
360 #define FUNC(name) FUNC_SEI(name)
361 #include "cbs_sei_syntax_template.c"
362 #undef FUNC
363
364 #define FUNC(name) FUNC_H264(name)
365 #include "cbs_h264_syntax_template.c"
366 #undef FUNC
367
368 #define FUNC(name) FUNC_H265(name)
369 #include "cbs_h265_syntax_template.c"
370 #undef FUNC
371
372 #undef READ
373 #undef READWRITE
374 #undef RWContext
375 #undef xu
376 #undef xi
377 #undef xue
378 #undef xse
379 #undef infer
380 #undef more_rbsp_data
381 #undef bit_position
382 #undef byte_alignment
383 #undef allocate
384
385
386 #define WRITE
387 #define READWRITE write
388 #define RWContext PutBitContext
389
390 #define xu(width, name, var, range_min, range_max, subs, ...) do { \
391 uint32_t value = var; \
392 CHECK(ff_cbs_write_unsigned(ctx, rw, width, #name, \
393 SUBSCRIPTS(subs, __VA_ARGS__), \
394 value, range_min, range_max)); \
395 } while (0)
396 #define xue(name, var, range_min, range_max, subs, ...) do { \
397 uint32_t value = var; \
398 CHECK(cbs_write_ue_golomb(ctx, rw, #name, \
399 SUBSCRIPTS(subs, __VA_ARGS__), \
400 value, range_min, range_max)); \
401 } while (0)
402 #define xi(width, name, var, range_min, range_max, subs, ...) do { \
403 int32_t value = var; \
404 CHECK(ff_cbs_write_signed(ctx, rw, width, #name, \
405 SUBSCRIPTS(subs, __VA_ARGS__), \
406 value, range_min, range_max)); \
407 } while (0)
408 #define xse(name, var, range_min, range_max, subs, ...) do { \
409 int32_t value = var; \
410 CHECK(cbs_write_se_golomb(ctx, rw, #name, \
411 SUBSCRIPTS(subs, __VA_ARGS__), \
412 value, range_min, range_max)); \
413 } while (0)
414
415 #define infer(name, value) do { \
416 if (current->name != (value)) { \
417 av_log(ctx->log_ctx, AV_LOG_ERROR, \
418 "%s does not match inferred value: " \
419 "%"PRId64", but should be %"PRId64".\n", \
420 #name, (int64_t)current->name, (int64_t)(value)); \
421 return AVERROR_INVALIDDATA; \
422 } \
423 } while (0)
424
425 #define more_rbsp_data(var) (var)
426
427 #define bit_position(rw) (put_bits_count(rw))
428 #define byte_alignment(rw) (put_bits_count(rw) % 8)
429
430 #define allocate(name, size) do { \
431 if (!name) { \
432 av_log(ctx->log_ctx, AV_LOG_ERROR, "%s must be set " \
433 "for writing.\n", #name); \
434 return AVERROR_INVALIDDATA; \
435 } \
436 } while (0)
437
438 #define FUNC(name) FUNC_SEI(name)
439 #include "cbs_sei_syntax_template.c"
440 #undef FUNC
441
442 #define FUNC(name) FUNC_H264(name)
443 #include "cbs_h264_syntax_template.c"
444 #undef FUNC
445
446 #define FUNC(name) FUNC_H265(name)
447 #include "cbs_h265_syntax_template.c"
448 #undef FUNC
449
450 #undef WRITE
451 #undef READWRITE
452 #undef RWContext
453 #undef xu
454 #undef xi
455 #undef xue
456 #undef xse
457 #undef u
458 #undef i
459 #undef flag
460 #undef ue
461 #undef se
462 #undef infer
463 #undef more_rbsp_data
464 #undef bit_position
465 #undef byte_alignment
466 #undef allocate
467
468
469 4979 static int cbs_h2645_fragment_add_nals(CodedBitstreamContext *ctx,
470 CodedBitstreamFragment *frag,
471 const H2645Packet *packet)
472 {
473 int err, i;
474
475
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 20473 for (i = 0; i < packet->nb_nals; i++) {
476 15494 const H2645NAL *nal = &packet->nals[i];
477 AVBufferRef *ref;
478 15494 size_t size = nal->size;
479
480
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 15494 if (nal->nuh_layer_id > 0)
481 ✗ continue;
482
483 // Remove trailing zeroes.
484
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 23790 while (size > 0 && nal->data[size - 1] == 0)
485 8296 --size;
486
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 15494 if (size == 0) {
487 ✗ av_log(ctx->log_ctx, AV_LOG_VERBOSE, "Discarding empty 0 NAL unit\n");
488 ✗ continue;
489 }
490
491 30988 ref = (nal->data == nal->raw_data) ? frag->data_ref
492
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 15494 : packet->rbsp.rbsp_buffer_ref;
493
494 15494 err = ff_cbs_append_unit_data(frag, nal->type,
495 15494 (uint8_t*)nal->data, size, ref);
496
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 15494 if (err < 0)
497 ✗ return err;
498 }
499
500 4979 return 0;
501 }
502
503 4974 static int cbs_h2645_split_fragment(CodedBitstreamContext *ctx,
504 CodedBitstreamFragment *frag,
505 int header)
506 {
507 4974 enum AVCodecID codec_id = ctx->codec->codec_id;
508 4974 CodedBitstreamH2645Context *priv = ctx->priv_data;
509 GetByteContext gbc;
510 int err;
511
512
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 4974 av_assert0(frag->data && frag->nb_units == 0);
513
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 4974 if (frag->data_size == 0)
514 ✗ return 0;
515
516
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 4979 if (header && frag->data[0] && codec_id == AV_CODEC_ID_H264) {
517 // AVCC header.
518 size_t size, start, end;
519 int i, count, version;
520
521 5 priv->mp4 = 1;
522
523 5 bytestream2_init(&gbc, frag->data, frag->data_size);
524
525
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 5 if (bytestream2_get_bytes_left(&gbc) < 6)
526 ✗ return AVERROR_INVALIDDATA;
527
528 5 version = bytestream2_get_byte(&gbc);
529
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 5 if (version != 1) {
530 ✗ av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid AVCC header: "
531 "first byte %u.\n", version);
532 ✗ return AVERROR_INVALIDDATA;
533 }
534
535 5 bytestream2_skip(&gbc, 3);
536 5 priv->nal_length_size = (bytestream2_get_byte(&gbc) & 3) + 1;
537
538 // SPS array.
539 5 count = bytestream2_get_byte(&gbc) & 0x1f;
540 5 start = bytestream2_tell(&gbc);
541
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 9 for (i = 0; i < count; i++) {
542
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 4 if (bytestream2_get_bytes_left(&gbc) < 2 * (count - i))
543 ✗ return AVERROR_INVALIDDATA;
544 4 size = bytestream2_get_be16(&gbc);
545
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 4 if (bytestream2_get_bytes_left(&gbc) < size)
546 ✗ return AVERROR_INVALIDDATA;
547 4 bytestream2_skip(&gbc, size);
548 }
549 5 end = bytestream2_tell(&gbc);
550
551 5 err = ff_h2645_packet_split(&priv->read_packet,
552 5 frag->data + start, end - start,
553 ctx->log_ctx, 1, 2, AV_CODEC_ID_H264, 1, 1);
554
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 5 if (err < 0) {
555 ✗ av_log(ctx->log_ctx, AV_LOG_ERROR, "Failed to split AVCC SPS array.\n");
556 ✗ return err;
557 }
558 5 err = cbs_h2645_fragment_add_nals(ctx, frag, &priv->read_packet);
559
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 5 if (err < 0)
560 ✗ return err;
561
562 // PPS array.
563 5 count = bytestream2_get_byte(&gbc);
564 5 start = bytestream2_tell(&gbc);
565
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 9 for (i = 0; i < count; i++) {
566
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 4 if (bytestream2_get_bytes_left(&gbc) < 2 * (count - i))
567 ✗ return AVERROR_INVALIDDATA;
568 4 size = bytestream2_get_be16(&gbc);
569
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 4 if (bytestream2_get_bytes_left(&gbc) < size)
570 ✗ return AVERROR_INVALIDDATA;
571 4 bytestream2_skip(&gbc, size);
572 }
573 5 end = bytestream2_tell(&gbc);
574
575 5 err = ff_h2645_packet_split(&priv->read_packet,
576 5 frag->data + start, end - start,
577 ctx->log_ctx, 1, 2, AV_CODEC_ID_H264, 1, 1);
578
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 5 if (err < 0) {
579 ✗ av_log(ctx->log_ctx, AV_LOG_ERROR, "Failed to split AVCC PPS array.\n");
580 ✗ return err;
581 }
582 5 err = cbs_h2645_fragment_add_nals(ctx, frag, &priv->read_packet);
583
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 5 if (err < 0)
584 ✗ return err;
585
586
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 5 if (bytestream2_get_bytes_left(&gbc) > 0) {
587 2 av_log(ctx->log_ctx, AV_LOG_WARNING, "%u bytes left at end of AVCC "
588 "header.\n", bytestream2_get_bytes_left(&gbc));
589 }
590
591
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 4969 } else if (header && frag->data[0] && codec_id == AV_CODEC_ID_HEVC) {
592 // HVCC header.
593 size_t size, start, end;
594 int i, j, nb_arrays, nal_unit_type, nb_nals, version;
595
596 ✗ priv->mp4 = 1;
597
598 ✗ bytestream2_init(&gbc, frag->data, frag->data_size);
599
600 ✗ if (bytestream2_get_bytes_left(&gbc) < 23)
601 ✗ return AVERROR_INVALIDDATA;
602
603 ✗ version = bytestream2_get_byte(&gbc);
604 ✗ if (version != 1) {
605 ✗ av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid HVCC header: "
606 "first byte %u.\n", version);
607 ✗ return AVERROR_INVALIDDATA;
608 }
609
610 ✗ bytestream2_skip(&gbc, 20);
611 ✗ priv->nal_length_size = (bytestream2_get_byte(&gbc) & 3) + 1;
612
613 ✗ nb_arrays = bytestream2_get_byte(&gbc);
614 ✗ for (i = 0; i < nb_arrays; i++) {
615 ✗ nal_unit_type = bytestream2_get_byte(&gbc) & 0x3f;
616 ✗ nb_nals = bytestream2_get_be16(&gbc);
617
618 ✗ start = bytestream2_tell(&gbc);
619 ✗ for (j = 0; j < nb_nals; j++) {
620 ✗ if (bytestream2_get_bytes_left(&gbc) < 2)
621 ✗ return AVERROR_INVALIDDATA;
622 ✗ size = bytestream2_get_be16(&gbc);
623 ✗ if (bytestream2_get_bytes_left(&gbc) < size)
624 ✗ return AVERROR_INVALIDDATA;
625 ✗ bytestream2_skip(&gbc, size);
626 }
627 ✗ end = bytestream2_tell(&gbc);
628
629 ✗ err = ff_h2645_packet_split(&priv->read_packet,
630 ✗ frag->data + start, end - start,
631 ctx->log_ctx, 1, 2, AV_CODEC_ID_HEVC, 1, 1);
632 ✗ if (err < 0) {
633 ✗ av_log(ctx->log_ctx, AV_LOG_ERROR, "Failed to split "
634 "HVCC array %d (%d NAL units of type %d).\n",
635 i, nb_nals, nal_unit_type);
636 ✗ return err;
637 }
638 ✗ err = cbs_h2645_fragment_add_nals(ctx, frag, &priv->read_packet);
639 ✗ if (err < 0)
640 ✗ return err;
641 }
642
643 } else {
644 // Annex B, or later MP4 with already-known parameters.
645
646 4969 err = ff_h2645_packet_split(&priv->read_packet,
647 4969 frag->data, frag->data_size,
648 ctx->log_ctx,
649 priv->mp4, priv->nal_length_size,
650 codec_id, 1, 1);
651
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 4969 if (err < 0)
652 ✗ return err;
653
654 4969 err = cbs_h2645_fragment_add_nals(ctx, frag, &priv->read_packet);
655
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 4969 if (err < 0)
656 ✗ return err;
657 }
658
659 4974 return 0;
660 }
661
662 #define cbs_h2645_replace_ps(h26n, ps_name, ps_var, id_element) \
663 static int cbs_h26 ## h26n ## _replace_ ## ps_var(CodedBitstreamContext *ctx, \
664 CodedBitstreamUnit *unit) \
665 { \
666 CodedBitstreamH26 ## h26n ## Context *priv = ctx->priv_data; \
667 H26 ## h26n ## Raw ## ps_name *ps_var = unit->content; \
668 unsigned int id = ps_var->id_element; \
669 int err = ff_cbs_make_unit_refcounted(ctx, unit); \
670 if (err < 0) \
671 return err; \
672 if (priv->ps_var[id] == priv->active_ ## ps_var) \
673 priv->active_ ## ps_var = NULL ; \
674 av_buffer_unref(&priv->ps_var ## _ref[id]); \
675 av_assert0(unit->content_ref); \
676 priv->ps_var ## _ref[id] = av_buffer_ref(unit->content_ref); \
677 if (!priv->ps_var ## _ref[id]) \
678 return AVERROR(ENOMEM); \
679 priv->ps_var[id] = (H26 ## h26n ## Raw ## ps_name *)priv->ps_var ## _ref[id]->data; \
680 return 0; \
681 }
682
683
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 138 cbs_h2645_replace_ps(4, SPS, sps, seq_parameter_set_id)
684
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 2982 cbs_h2645_replace_ps(4, PPS, pps, pic_parameter_set_id)
685
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 96 cbs_h2645_replace_ps(5, VPS, vps, vps_video_parameter_set_id)
686
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 100 cbs_h2645_replace_ps(5, SPS, sps, sps_seq_parameter_set_id)
687
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 550 cbs_h2645_replace_ps(5, PPS, pps, pps_pic_parameter_set_id)
688
689 7662 static int cbs_h264_read_nal_unit(CodedBitstreamContext *ctx,
690 CodedBitstreamUnit *unit)
691 {
692 GetBitContext gbc;
693 int err;
694
695 7662 err = init_get_bits(&gbc, unit->data, 8 * unit->data_size);
696
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 7662 if (err < 0)
697 ✗ return err;
698
699 7662 err = ff_cbs_alloc_unit_content(ctx, unit);
700
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 7662 if (err < 0)
701 ✗ return err;
702
703
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 7662 switch (unit->type) {
704 69 case H264_NAL_SPS:
705 {
706 69 H264RawSPS *sps = unit->content;
707
708 69 err = cbs_h264_read_sps(ctx, &gbc, sps);
709
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 69 if (err < 0)
710 ✗ return err;
711
712 69 err = cbs_h264_replace_sps(ctx, unit);
713
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 69 if (err < 0)
714 ✗ return err;
715 }
716 69 break;
717
718 ✗ case H264_NAL_SPS_EXT:
719 {
720 ✗ err = cbs_h264_read_sps_extension(ctx, &gbc, unit->content);
721 ✗ if (err < 0)
722 ✗ return err;
723 }
724 ✗ break;
725
726 1491 case H264_NAL_PPS:
727 {
728 1491 H264RawPPS *pps = unit->content;
729
730 1491 err = cbs_h264_read_pps(ctx, &gbc, pps);
731
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 1491 if (err < 0)
732 ✗ return err;
733
734 1491 err = cbs_h264_replace_pps(ctx, unit);
735
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 1491 if (err < 0)
736 ✗ return err;
737 }
738 1491 break;
739
740 5469 case H264_NAL_SLICE:
741 case H264_NAL_IDR_SLICE:
742 case H264_NAL_AUXILIARY_SLICE:
743 {
744 5469 H264RawSlice *slice = unit->content;
745 int pos, len;
746
747 5469 err = cbs_h264_read_slice_header(ctx, &gbc, &slice->header);
748
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 5469 if (err < 0)
749 ✗ return err;
750
751
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 5469 if (!cbs_h2645_read_more_rbsp_data(&gbc))
752 ✗ return AVERROR_INVALIDDATA;
753
754 5469 pos = get_bits_count(&gbc);
755 5469 len = unit->data_size;
756
757 5469 slice->data_size = len - pos / 8;
758 5469 slice->data_ref = av_buffer_ref(unit->data_ref);
759
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 5469 if (!slice->data_ref)
760 ✗ return AVERROR(ENOMEM);
761 5469 slice->data = unit->data + pos / 8;
762 5469 slice->data_bit_start = pos % 8;
763 }
764 5469 break;
765
766 235 case H264_NAL_AUD:
767 {
768 235 err = cbs_h264_read_aud(ctx, &gbc, unit->content);
769
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 235 if (err < 0)
770 ✗ return err;
771 }
772 235 break;
773
774 361 case H264_NAL_SEI:
775 {
776 361 err = cbs_h264_read_sei(ctx, &gbc, unit->content);
777
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 361 if (err < 0)
778 ✗ return err;
779 }
780 361 break;
781
782 34 case H264_NAL_FILLER_DATA:
783 {
784 34 err = cbs_h264_read_filler(ctx, &gbc, unit->content);
785
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 34 if (err < 0)
786 1 return err;
787 }
788 33 break;
789
790 3 case H264_NAL_END_SEQUENCE:
791 case H264_NAL_END_STREAM:
792 {
793 3 err = (unit->type == H264_NAL_END_SEQUENCE ?
794
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 3 cbs_h264_read_end_of_sequence :
795 3 cbs_h264_read_end_of_stream)(ctx, &gbc, unit->content);
796
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 3 if (err < 0)
797 ✗ return err;
798 }
799 3 break;
800
801 ✗ default:
802 ✗ return AVERROR(ENOSYS);
803 }
804
805 7661 return 0;
806 }
807
808 7832 static int cbs_h265_read_nal_unit(CodedBitstreamContext *ctx,
809 CodedBitstreamUnit *unit)
810 {
811 GetBitContext gbc;
812 int err;
813
814 7832 err = init_get_bits(&gbc, unit->data, 8 * unit->data_size);
815
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 7832 if (err < 0)
816 ✗ return err;
817
818 7832 err = ff_cbs_alloc_unit_content(ctx, unit);
819
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 7832 if (err < 0)
820 ✗ return err;
821
822
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 7832 switch (unit->type) {
823 48 case HEVC_NAL_VPS:
824 {
825 48 H265RawVPS *vps = unit->content;
826
827 48 err = cbs_h265_read_vps(ctx, &gbc, vps);
828
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 48 if (err < 0)
829 ✗ return err;
830
831 48 err = cbs_h265_replace_vps(ctx, unit);
832
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 48 if (err < 0)
833 ✗ return err;
834 }
835 48 break;
836 50 case HEVC_NAL_SPS:
837 {
838 50 H265RawSPS *sps = unit->content;
839
840 50 err = cbs_h265_read_sps(ctx, &gbc, sps);
841
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 50 if (err < 0)
842 ✗ return err;
843
844 50 err = cbs_h265_replace_sps(ctx, unit);
845
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 50 if (err < 0)
846 ✗ return err;
847 }
848 50 break;
849
850 275 case HEVC_NAL_PPS:
851 {
852 275 H265RawPPS *pps = unit->content;
853
854 275 err = cbs_h265_read_pps(ctx, &gbc, pps);
855
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 275 if (err < 0)
856 ✗ return err;
857
858 275 err = cbs_h265_replace_pps(ctx, unit);
859
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 275 if (err < 0)
860 ✗ return err;
861 }
862 275 break;
863
864 5864 case HEVC_NAL_TRAIL_N:
865 case HEVC_NAL_TRAIL_R:
866 case HEVC_NAL_TSA_N:
867 case HEVC_NAL_TSA_R:
868 case HEVC_NAL_STSA_N:
869 case HEVC_NAL_STSA_R:
870 case HEVC_NAL_RADL_N:
871 case HEVC_NAL_RADL_R:
872 case HEVC_NAL_RASL_N:
873 case HEVC_NAL_RASL_R:
874 case HEVC_NAL_BLA_W_LP:
875 case HEVC_NAL_BLA_W_RADL:
876 case HEVC_NAL_BLA_N_LP:
877 case HEVC_NAL_IDR_W_RADL:
878 case HEVC_NAL_IDR_N_LP:
879 case HEVC_NAL_CRA_NUT:
880 {
881 5864 H265RawSlice *slice = unit->content;
882 int pos, len;
883
884 5864 err = cbs_h265_read_slice_segment_header(ctx, &gbc, &slice->header);
885
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 5864 if (err < 0)
886 ✗ return err;
887
888
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 5864 if (!cbs_h2645_read_more_rbsp_data(&gbc))
889 ✗ return AVERROR_INVALIDDATA;
890
891 5864 pos = get_bits_count(&gbc);
892 5864 len = unit->data_size;
893
894 5864 slice->data_size = len - pos / 8;
895 5864 slice->data_ref = av_buffer_ref(unit->data_ref);
896
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 5864 if (!slice->data_ref)
897 ✗ return AVERROR(ENOMEM);
898 5864 slice->data = unit->data + pos / 8;
899 5864 slice->data_bit_start = pos % 8;
900 }
901 5864 break;
902
903 60 case HEVC_NAL_AUD:
904 {
905 60 err = cbs_h265_read_aud(ctx, &gbc, unit->content);
906
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 60 if (err < 0)
907 ✗ return err;
908 }
909 60 break;
910
911 1535 case HEVC_NAL_SEI_PREFIX:
912 case HEVC_NAL_SEI_SUFFIX:
913 {
914 1535 err = cbs_h265_read_sei(ctx, &gbc, unit->content,
915 1535 unit->type == HEVC_NAL_SEI_PREFIX);
916
917
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 1535 if (err < 0)
918 ✗ return err;
919 }
920 1535 break;
921
922 ✗ default:
923 ✗ return AVERROR(ENOSYS);
924 }
925
926 7832 return 0;
927 }
928
929 11332 static int cbs_h2645_write_slice_data(CodedBitstreamContext *ctx,
930 PutBitContext *pbc, const uint8_t *data,
931 size_t data_size, int data_bit_start)
932 {
933 11332 size_t rest = data_size - (data_bit_start + 7) / 8;
934 11332 const uint8_t *pos = data + data_bit_start / 8;
935
936
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 11332 av_assert0(data_bit_start >= 0 &&
937 data_size > data_bit_start / 8);
938
939
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 11332 if (data_size * 8 + 8 > put_bits_left(pbc))
940 ✗ return AVERROR(ENOSPC);
941
942
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 11332 if (!rest)
943 1 goto rbsp_stop_one_bit;
944
945 // First copy the remaining bits of the first byte
946 // The above check ensures that we do not accidentally
947 // copy beyond the rbsp_stop_one_bit.
948
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 11331 if (data_bit_start % 8)
949 3729 put_bits(pbc, 8 - data_bit_start % 8,
950 3729 *pos++ & MAX_UINT_BITS(8 - data_bit_start % 8));
951
952
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 11331 if (put_bits_count(pbc) % 8 == 0) {
953 // If the writer is aligned at this point,
954 // memcpy can be used to improve performance.
955 // This happens normally for CABAC.
956 11222 flush_put_bits(pbc);
957 11222 memcpy(put_bits_ptr(pbc), pos, rest);
958 11222 skip_put_bytes(pbc, rest);
959 } else {
960 // If not, we have to copy manually.
961 // rbsp_stop_one_bit forces us to special-case
962 // the last byte.
963 uint8_t temp;
964 int i;
965
966
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 98871 for (; rest > 4; rest -= 4, pos += 4)
967 98762 put_bits32(pbc, AV_RB32(pos));
968
969
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 274 for (; rest > 1; rest--, pos++)
970 165 put_bits(pbc, 8, *pos);
971
972 109 rbsp_stop_one_bit:
973
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 110 temp = rest ? *pos : *pos & MAX_UINT_BITS(8 - data_bit_start % 8);
974
975
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 110 av_assert0(temp);
976 110 i = ff_ctz(*pos);
977 110 temp = temp >> i;
978
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 110 i = rest ? (8 - i) : (8 - i - data_bit_start % 8);
979 110 put_bits(pbc, i, temp);
980
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 110 if (put_bits_count(pbc) % 8)
981 92 put_bits(pbc, 8 - put_bits_count(pbc) % 8, 0);
982 }
983
984 11332 return 0;
985 }
986
987 7586 static int cbs_h264_write_nal_unit(CodedBitstreamContext *ctx,
988 CodedBitstreamUnit *unit,
989 PutBitContext *pbc)
990 {
991 int err;
992
993
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 7586 switch (unit->type) {
994 69 case H264_NAL_SPS:
995 {
996 69 H264RawSPS *sps = unit->content;
997
998 69 err = cbs_h264_write_sps(ctx, pbc, sps);
999
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 69 if (err < 0)
1000 ✗ return err;
1001
1002 69 err = cbs_h264_replace_sps(ctx, unit);
1003
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 69 if (err < 0)
1004 ✗ return err;
1005 }
1006 69 break;
1007
1008 ✗ case H264_NAL_SPS_EXT:
1009 {
1010 ✗ H264RawSPSExtension *sps_ext = unit->content;
1011
1012 ✗ err = cbs_h264_write_sps_extension(ctx, pbc, sps_ext);
1013 ✗ if (err < 0)
1014 ✗ return err;
1015 }
1016 ✗ break;
1017
1018 1491 case H264_NAL_PPS:
1019 {
1020 1491 H264RawPPS *pps = unit->content;
1021
1022 1491 err = cbs_h264_write_pps(ctx, pbc, pps);
1023
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 1491 if (err < 0)
1024 ✗ return err;
1025
1026 1491 err = cbs_h264_replace_pps(ctx, unit);
1027
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 1491 if (err < 0)
1028 ✗ return err;
1029 }
1030 1491 break;
1031
1032 5468 case H264_NAL_SLICE:
1033 case H264_NAL_IDR_SLICE:
1034 case H264_NAL_AUXILIARY_SLICE:
1035 {
1036 5468 H264RawSlice *slice = unit->content;
1037
1038 5468 err = cbs_h264_write_slice_header(ctx, pbc, &slice->header);
1039
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 5468 if (err < 0)
1040 ✗ return err;
1041
1042
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 5468 if (slice->data) {
1043 5468 err = cbs_h2645_write_slice_data(ctx, pbc, slice->data,
1044 slice->data_size,
1045 slice->data_bit_start);
1046
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 5468 if (err < 0)
1047 ✗ return err;
1048 } else {
1049 // No slice data - that was just the header.
1050 // (Bitstream may be unaligned!)
1051 }
1052 }
1053 5468 break;
1054
1055 195 case H264_NAL_AUD:
1056 {
1057 195 err = cbs_h264_write_aud(ctx, pbc, unit->content);
1058
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 195 if (err < 0)
1059 ✗ return err;
1060 }
1061 195 break;
1062
1063 360 case H264_NAL_SEI:
1064 {
1065 360 err = cbs_h264_write_sei(ctx, pbc, unit->content);
1066
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 360 if (err < 0)
1067 ✗ return err;
1068 }
1069 360 break;
1070
1071 ✗ case H264_NAL_FILLER_DATA:
1072 {
1073 ✗ err = cbs_h264_write_filler(ctx, pbc, unit->content);
1074 ✗ if (err < 0)
1075 ✗ return err;
1076 }
1077 ✗ break;
1078
1079 1 case H264_NAL_END_SEQUENCE:
1080 {
1081 1 err = cbs_h264_write_end_of_sequence(ctx, pbc, unit->content);
1082
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 1 if (err < 0)
1083 ✗ return err;
1084 }
1085 1 break;
1086
1087 2 case H264_NAL_END_STREAM:
1088 {
1089 2 err = cbs_h264_write_end_of_stream(ctx, pbc, unit->content);
1090
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 2 if (err < 0)
1091 ✗ return err;
1092 }
1093 2 break;
1094
1095 ✗ default:
1096 ✗ av_log(ctx->log_ctx, AV_LOG_ERROR, "Write unimplemented for "
1097 "NAL unit type %"PRIu32".\n", unit->type);
1098 ✗ return AVERROR_PATCHWELCOME;
1099 }
1100
1101 7586 return 0;
1102 }
1103
1104 7832 static int cbs_h265_write_nal_unit(CodedBitstreamContext *ctx,
1105 CodedBitstreamUnit *unit,
1106 PutBitContext *pbc)
1107 {
1108 int err;
1109
1110
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 7832 switch (unit->type) {
1111 48 case HEVC_NAL_VPS:
1112 {
1113 48 H265RawVPS *vps = unit->content;
1114
1115 48 err = cbs_h265_write_vps(ctx, pbc, vps);
1116
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 48 if (err < 0)
1117 ✗ return err;
1118
1119 48 err = cbs_h265_replace_vps(ctx, unit);
1120
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 48 if (err < 0)
1121 ✗ return err;
1122 }
1123 48 break;
1124
1125 50 case HEVC_NAL_SPS:
1126 {
1127 50 H265RawSPS *sps = unit->content;
1128
1129 50 err = cbs_h265_write_sps(ctx, pbc, sps);
1130
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 50 if (err < 0)
1131 ✗ return err;
1132
1133 50 err = cbs_h265_replace_sps(ctx, unit);
1134
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 50 if (err < 0)
1135 ✗ return err;
1136 }
1137 50 break;
1138
1139 275 case HEVC_NAL_PPS:
1140 {
1141 275 H265RawPPS *pps = unit->content;
1142
1143 275 err = cbs_h265_write_pps(ctx, pbc, pps);
1144
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 275 if (err < 0)
1145 ✗ return err;
1146
1147 275 err = cbs_h265_replace_pps(ctx, unit);
1148
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 275 if (err < 0)
1149 ✗ return err;
1150 }
1151 275 break;
1152
1153 5864 case HEVC_NAL_TRAIL_N:
1154 case HEVC_NAL_TRAIL_R:
1155 case HEVC_NAL_TSA_N:
1156 case HEVC_NAL_TSA_R:
1157 case HEVC_NAL_STSA_N:
1158 case HEVC_NAL_STSA_R:
1159 case HEVC_NAL_RADL_N:
1160 case HEVC_NAL_RADL_R:
1161 case HEVC_NAL_RASL_N:
1162 case HEVC_NAL_RASL_R:
1163 case HEVC_NAL_BLA_W_LP:
1164 case HEVC_NAL_BLA_W_RADL:
1165 case HEVC_NAL_BLA_N_LP:
1166 case HEVC_NAL_IDR_W_RADL:
1167 case HEVC_NAL_IDR_N_LP:
1168 case HEVC_NAL_CRA_NUT:
1169 {
1170 5864 H265RawSlice *slice = unit->content;
1171
1172 5864 err = cbs_h265_write_slice_segment_header(ctx, pbc, &slice->header);
1173
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 5864 if (err < 0)
1174 ✗ return err;
1175
1176
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 5864 if (slice->data) {
1177 5864 err = cbs_h2645_write_slice_data(ctx, pbc, slice->data,
1178 slice->data_size,
1179 slice->data_bit_start);
1180
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 5864 if (err < 0)
1181 ✗ return err;
1182 } else {
1183 // No slice data - that was just the header.
1184 }
1185 }
1186 5864 break;
1187
1188 60 case HEVC_NAL_AUD:
1189 {
1190 60 err = cbs_h265_write_aud(ctx, pbc, unit->content);
1191
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 60 if (err < 0)
1192 ✗ return err;
1193 }
1194 60 break;
1195
1196 1535 case HEVC_NAL_SEI_PREFIX:
1197 case HEVC_NAL_SEI_SUFFIX:
1198 {
1199 1535 err = cbs_h265_write_sei(ctx, pbc, unit->content,
1200 1535 unit->type == HEVC_NAL_SEI_PREFIX);
1201
1202
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 1535 if (err < 0)
1203 ✗ return err;
1204 }
1205 1535 break;
1206
1207 ✗ default:
1208 ✗ av_log(ctx->log_ctx, AV_LOG_ERROR, "Write unimplemented for "
1209 "NAL unit type %"PRIu32".\n", unit->type);
1210 ✗ return AVERROR_PATCHWELCOME;
1211 }
1212
1213 7832 return 0;
1214 }
1215
1216 15418 static int cbs_h2645_unit_requires_zero_byte(enum AVCodecID codec_id,
1217 CodedBitstreamUnitType type,
1218 int nal_unit_index)
1219 {
1220 // Section B.1.2 in H.264, section B.2.2 in H.265.
1221
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 15418 if (nal_unit_index == 0) {
1222 // Assume that this is the first NAL unit in an access unit.
1223 4972 return 1;
1224 }
1225
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 10446 if (codec_id == AV_CODEC_ID_H264)
1226
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 4766 return type == H264_NAL_SPS || type == H264_NAL_PPS;
1227
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 5680 if (codec_id == AV_CODEC_ID_HEVC)
1228
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 5680 return type == HEVC_NAL_VPS || type == HEVC_NAL_SPS || type == HEVC_NAL_PPS;
1229 ✗ return 0;
1230 }
1231
1232 4973 static int cbs_h2645_assemble_fragment(CodedBitstreamContext *ctx,
1233 CodedBitstreamFragment *frag)
1234 {
1235 uint8_t *data;
1236 size_t max_size, dp, sp;
1237 int err, i, zero_run;
1238
1239
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 20391 for (i = 0; i < frag->nb_units; i++) {
1240 // Data should already all have been written when we get here.
1241
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 15418 av_assert0(frag->units[i].data);
1242 }
1243
1244 4973 max_size = 0;
1245
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 20391 for (i = 0; i < frag->nb_units; i++) {
1246 // Start code + content with worst-case emulation prevention.
1247 15418 max_size += 4 + frag->units[i].data_size * 3 / 2;
1248 }
1249
1250 4973 data = av_realloc(NULL, max_size + AV_INPUT_BUFFER_PADDING_SIZE);
1251
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 4973 if (!data)
1252 ✗ return AVERROR(ENOMEM);
1253
1254 4973 dp = 0;
1255
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 20391 for (i = 0; i < frag->nb_units; i++) {
1256 15418 CodedBitstreamUnit *unit = &frag->units[i];
1257
1258
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 15418 if (unit->data_bit_padding > 0) {
1259 ✗ if (i < frag->nb_units - 1)
1260 ✗ av_log(ctx->log_ctx, AV_LOG_WARNING, "Probably invalid "
1261 "unaligned padding on non-final NAL unit.\n");
1262 else
1263 ✗ frag->data_bit_padding = unit->data_bit_padding;
1264 }
1265
1266
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 15418 if (cbs_h2645_unit_requires_zero_byte(ctx->codec->codec_id, unit->type, i)) {
1267 // zero_byte
1268 5525 data[dp++] = 0;
1269 }
1270 // start_code_prefix_one_3bytes
1271 15418 data[dp++] = 0;
1272 15418 data[dp++] = 0;
1273 15418 data[dp++] = 1;
1274
1275 15418 zero_run = 0;
1276
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 11795713 for (sp = 0; sp < unit->data_size; sp++) {
1277
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 11780295 if (zero_run < 2) {
1278
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 11776047 if (unit->data[sp] == 0)
1279 115218 ++zero_run;
1280 else
1281 11660829 zero_run = 0;
1282 } else {
1283
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 4248 if ((unit->data[sp] & ~3) == 0) {
1284 // emulation_prevention_three_byte
1285 804 data[dp++] = 3;
1286 }
1287 4248 zero_run = unit->data[sp] == 0;
1288 }
1289 11780295 data[dp++] = unit->data[sp];
1290 }
1291 }
1292
1293
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 4973 av_assert0(dp <= max_size);
1294 4973 err = av_reallocp(&data, dp + AV_INPUT_BUFFER_PADDING_SIZE);
1295
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 4973 if (err)
1296 ✗ return err;
1297 4973 memset(data + dp, 0, AV_INPUT_BUFFER_PADDING_SIZE);
1298
1299 4973 frag->data_ref = av_buffer_create(data, dp + AV_INPUT_BUFFER_PADDING_SIZE,
1300 NULL, NULL, 0);
1301
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 4973 if (!frag->data_ref) {
1302 ✗ av_freep(&data);
1303 ✗ return AVERROR(ENOMEM);
1304 }
1305
1306 4973 frag->data = data;
1307 4973 frag->data_size = dp;
1308
1309 4973 return 0;
1310 }
1311
1312 ✗ static void cbs_h264_flush(CodedBitstreamContext *ctx)
1313 {
1314 ✗ CodedBitstreamH264Context *h264 = ctx->priv_data;
1315
1316 ✗ for (int i = 0; i < FF_ARRAY_ELEMS(h264->sps); i++) {
1317 ✗ av_buffer_unref(&h264->sps_ref[i]);
1318 ✗ h264->sps[i] = NULL;
1319 }
1320 ✗ for (int i = 0; i < FF_ARRAY_ELEMS(h264->pps); i++) {
1321 ✗ av_buffer_unref(&h264->pps_ref[i]);
1322 ✗ h264->pps[i] = NULL;
1323 }
1324
1325 ✗ h264->active_sps = NULL;
1326 ✗ h264->active_pps = NULL;
1327 ✗ h264->last_slice_nal_unit_type = 0;
1328 }
1329
1330 40 static void cbs_h264_close(CodedBitstreamContext *ctx)
1331 {
1332 40 CodedBitstreamH264Context *h264 = ctx->priv_data;
1333 int i;
1334
1335 40 ff_h2645_packet_uninit(&h264->common.read_packet);
1336
1337
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 1320 for (i = 0; i < FF_ARRAY_ELEMS(h264->sps); i++)
1338 1280 av_buffer_unref(&h264->sps_ref[i]);
1339
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 10280 for (i = 0; i < FF_ARRAY_ELEMS(h264->pps); i++)
1340 10240 av_buffer_unref(&h264->pps_ref[i]);
1341 40 }
1342
1343 ✗ static void cbs_h265_flush(CodedBitstreamContext *ctx)
1344 {
1345 ✗ CodedBitstreamH265Context *h265 = ctx->priv_data;
1346
1347 ✗ for (int i = 0; i < FF_ARRAY_ELEMS(h265->vps); i++) {
1348 ✗ av_buffer_unref(&h265->vps_ref[i]);
1349 ✗ h265->vps[i] = NULL;
1350 }
1351 ✗ for (int i = 0; i < FF_ARRAY_ELEMS(h265->sps); i++) {
1352 ✗ av_buffer_unref(&h265->sps_ref[i]);
1353 ✗ h265->sps[i] = NULL;
1354 }
1355 ✗ for (int i = 0; i < FF_ARRAY_ELEMS(h265->pps); i++) {
1356 ✗ av_buffer_unref(&h265->pps_ref[i]);
1357 ✗ h265->pps[i] = NULL;
1358 }
1359
1360 ✗ h265->active_vps = NULL;
1361 ✗ h265->active_sps = NULL;
1362 ✗ h265->active_pps = NULL;
1363 }
1364
1365 40 static void cbs_h265_close(CodedBitstreamContext *ctx)
1366 {
1367 40 CodedBitstreamH265Context *h265 = ctx->priv_data;
1368 int i;
1369
1370 40 ff_h2645_packet_uninit(&h265->common.read_packet);
1371
1372
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 680 for (i = 0; i < FF_ARRAY_ELEMS(h265->vps); i++)
1373 640 av_buffer_unref(&h265->vps_ref[i]);
1374
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 680 for (i = 0; i < FF_ARRAY_ELEMS(h265->sps); i++)
1375 640 av_buffer_unref(&h265->sps_ref[i]);
1376
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 2600 for (i = 0; i < FF_ARRAY_ELEMS(h265->pps); i++)
1377 2560 av_buffer_unref(&h265->pps_ref[i]);
1378 40 }
1379
1380 361 static void cbs_h264_free_sei(void *opaque, uint8_t *content)
1381 {
1382 361 H264RawSEI *sei = (H264RawSEI*)content;
1383 361 ff_cbs_sei_free_message_list(&sei->message_list);
1384 361 av_free(content);
1385 361 }
1386
1387 static const CodedBitstreamUnitTypeDescriptor cbs_h264_unit_types[] = {
1388 CBS_UNIT_TYPE_POD(H264_NAL_SPS, H264RawSPS),
1389 CBS_UNIT_TYPE_POD(H264_NAL_SPS_EXT, H264RawSPSExtension),
1390
1391 CBS_UNIT_TYPE_INTERNAL_REF(H264_NAL_PPS, H264RawPPS, slice_group_id),
1392
1393 CBS_UNIT_TYPES_INTERNAL_REF((H264_NAL_IDR_SLICE,
1394 H264_NAL_SLICE,
1395 H264_NAL_AUXILIARY_SLICE), H264RawSlice, data),
1396
1397 CBS_UNIT_TYPE_POD(H264_NAL_AUD, H264RawAUD),
1398 CBS_UNIT_TYPE_POD(H264_NAL_FILLER_DATA, H264RawFiller),
1399 CBS_UNIT_TYPE_POD(H264_NAL_END_SEQUENCE, H264RawNALUnitHeader),
1400 CBS_UNIT_TYPE_POD(H264_NAL_END_STREAM, H264RawNALUnitHeader),
1401
1402 CBS_UNIT_TYPE_COMPLEX(H264_NAL_SEI, H264RawSEI, &cbs_h264_free_sei),
1403
1404 CBS_UNIT_TYPE_END_OF_LIST
1405 };
1406
1407 1535 static void cbs_h265_free_sei(void *opaque, uint8_t *content)
1408 {
1409 1535 H265RawSEI *sei = (H265RawSEI*)content;
1410 1535 ff_cbs_sei_free_message_list(&sei->message_list);
1411 1535 av_free(content);
1412 1535 }
1413
1414 static const CodedBitstreamUnitTypeDescriptor cbs_h265_unit_types[] = {
1415 CBS_UNIT_TYPE_INTERNAL_REF(HEVC_NAL_VPS, H265RawVPS, extension_data.data),
1416 CBS_UNIT_TYPE_INTERNAL_REF(HEVC_NAL_SPS, H265RawSPS, extension_data.data),
1417 CBS_UNIT_TYPE_INTERNAL_REF(HEVC_NAL_PPS, H265RawPPS, extension_data.data),
1418
1419 CBS_UNIT_TYPE_POD(HEVC_NAL_AUD, H265RawAUD),
1420
1421 // Slices of non-IRAP pictures.
1422 CBS_UNIT_RANGE_INTERNAL_REF(HEVC_NAL_TRAIL_N, HEVC_NAL_RASL_R,
1423 H265RawSlice, data),
1424 // Slices of IRAP pictures.
1425 CBS_UNIT_RANGE_INTERNAL_REF(HEVC_NAL_BLA_W_LP, HEVC_NAL_CRA_NUT,
1426 H265RawSlice, data),
1427
1428 CBS_UNIT_TYPES_COMPLEX((HEVC_NAL_SEI_PREFIX, HEVC_NAL_SEI_SUFFIX),
1429 H265RawSEI, cbs_h265_free_sei),
1430
1431 CBS_UNIT_TYPE_END_OF_LIST
1432 };
1433
1434 const CodedBitstreamType ff_cbs_type_h264 = {
1435 .codec_id = AV_CODEC_ID_H264,
1436
1437 .priv_data_size = sizeof(CodedBitstreamH264Context),
1438
1439 .unit_types = cbs_h264_unit_types,
1440
1441 .split_fragment = &cbs_h2645_split_fragment,
1442 .read_unit = &cbs_h264_read_nal_unit,
1443 .write_unit = &cbs_h264_write_nal_unit,
1444 .assemble_fragment = &cbs_h2645_assemble_fragment,
1445
1446 .flush = &cbs_h264_flush,
1447 .close = &cbs_h264_close,
1448 };
1449
1450 const CodedBitstreamType ff_cbs_type_h265 = {
1451 .codec_id = AV_CODEC_ID_HEVC,
1452
1453 .priv_data_size = sizeof(CodedBitstreamH265Context),
1454
1455 .unit_types = cbs_h265_unit_types,
1456
1457 .split_fragment = &cbs_h2645_split_fragment,
1458 .read_unit = &cbs_h265_read_nal_unit,
1459 .write_unit = &cbs_h265_write_nal_unit,
1460 .assemble_fragment = &cbs_h2645_assemble_fragment,
1461
1462 .flush = &cbs_h265_flush,
1463 .close = &cbs_h265_close,
1464 };
1465
1466 static const SEIMessageTypeDescriptor cbs_sei_common_types[] = {
1467 {
1468 SEI_TYPE_FILLER_PAYLOAD,
1469 1, 1,
1470 sizeof(SEIRawFillerPayload),
1471 SEI_MESSAGE_RW(sei, filler_payload),
1472 },
1473 {
1474 SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35,
1475 1, 1,
1476 sizeof(SEIRawUserDataRegistered),
1477 SEI_MESSAGE_RW(sei, user_data_registered),
1478 },
1479 {
1480 SEI_TYPE_USER_DATA_UNREGISTERED,
1481 1, 1,
1482 sizeof(SEIRawUserDataUnregistered),
1483 SEI_MESSAGE_RW(sei, user_data_unregistered),
1484 },
1485 {
1486 SEI_TYPE_MASTERING_DISPLAY_COLOUR_VOLUME,
1487 1, 0,
1488 sizeof(SEIRawMasteringDisplayColourVolume),
1489 SEI_MESSAGE_RW(sei, mastering_display_colour_volume),
1490 },
1491 {
1492 SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO,
1493 1, 0,
1494 sizeof(SEIRawContentLightLevelInfo),
1495 SEI_MESSAGE_RW(sei, content_light_level_info),
1496 },
1497 {
1498 SEI_TYPE_ALTERNATIVE_TRANSFER_CHARACTERISTICS,
1499 1, 0,
1500 sizeof(SEIRawAlternativeTransferCharacteristics),
1501 SEI_MESSAGE_RW(sei, alternative_transfer_characteristics),
1502 },
1503 {
1504 SEI_TYPE_AMBIENT_VIEWING_ENVIRONMENT,
1505 1, 0,
1506 sizeof(SEIRawAmbientViewingEnvironment),
1507 SEI_MESSAGE_RW(sei, ambient_viewing_environment),
1508 },
1509 SEI_MESSAGE_TYPE_END,
1510 };
1511
1512 static const SEIMessageTypeDescriptor cbs_sei_h264_types[] = {
1513 {
1514 SEI_TYPE_BUFFERING_PERIOD,
1515 1, 0,
1516 sizeof(H264RawSEIBufferingPeriod),
1517 SEI_MESSAGE_RW(h264, sei_buffering_period),
1518 },
1519 {
1520 SEI_TYPE_PIC_TIMING,
1521 1, 0,
1522 sizeof(H264RawSEIPicTiming),
1523 SEI_MESSAGE_RW(h264, sei_pic_timing),
1524 },
1525 {
1526 SEI_TYPE_PAN_SCAN_RECT,
1527 1, 0,
1528 sizeof(H264RawSEIPanScanRect),
1529 SEI_MESSAGE_RW(h264, sei_pan_scan_rect),
1530 },
1531 {
1532 SEI_TYPE_RECOVERY_POINT,
1533 1, 0,
1534 sizeof(H264RawSEIRecoveryPoint),
1535 SEI_MESSAGE_RW(h264, sei_recovery_point),
1536 },
1537 {
1538 SEI_TYPE_FILM_GRAIN_CHARACTERISTICS,
1539 1, 0,
1540 sizeof(H264RawFilmGrainCharacteristics),
1541 SEI_MESSAGE_RW(h264, film_grain_characteristics),
1542 },
1543 {
1544 SEI_TYPE_DISPLAY_ORIENTATION,
1545 1, 0,
1546 sizeof(H264RawSEIDisplayOrientation),
1547 SEI_MESSAGE_RW(h264, sei_display_orientation),
1548 },
1549 SEI_MESSAGE_TYPE_END
1550 };
1551
1552 static const SEIMessageTypeDescriptor cbs_sei_h265_types[] = {
1553 {
1554 SEI_TYPE_BUFFERING_PERIOD,
1555 1, 0,
1556 sizeof(H265RawSEIBufferingPeriod),
1557 SEI_MESSAGE_RW(h265, sei_buffering_period),
1558 },
1559 {
1560 SEI_TYPE_PIC_TIMING,
1561 1, 0,
1562 sizeof(H265RawSEIPicTiming),
1563 SEI_MESSAGE_RW(h265, sei_pic_timing),
1564 },
1565 {
1566 SEI_TYPE_PAN_SCAN_RECT,
1567 1, 0,
1568 sizeof(H265RawSEIPanScanRect),
1569 SEI_MESSAGE_RW(h265, sei_pan_scan_rect),
1570 },
1571 {
1572 SEI_TYPE_RECOVERY_POINT,
1573 1, 0,
1574 sizeof(H265RawSEIRecoveryPoint),
1575 SEI_MESSAGE_RW(h265, sei_recovery_point),
1576 },
1577 {
1578 SEI_TYPE_FILM_GRAIN_CHARACTERISTICS,
1579 1, 0,
1580 sizeof(H265RawFilmGrainCharacteristics),
1581 SEI_MESSAGE_RW(h265, film_grain_characteristics),
1582 },
1583 {
1584 SEI_TYPE_DISPLAY_ORIENTATION,
1585 1, 0,
1586 sizeof(H265RawSEIDisplayOrientation),
1587 SEI_MESSAGE_RW(h265, sei_display_orientation),
1588 },
1589 {
1590 SEI_TYPE_ACTIVE_PARAMETER_SETS,
1591 1, 0,
1592 sizeof(H265RawSEIActiveParameterSets),
1593 SEI_MESSAGE_RW(h265, sei_active_parameter_sets),
1594 },
1595 {
1596 SEI_TYPE_DECODED_PICTURE_HASH,
1597 0, 1,
1598 sizeof(H265RawSEIDecodedPictureHash),
1599 SEI_MESSAGE_RW(h265, sei_decoded_picture_hash),
1600 },
1601 {
1602 SEI_TYPE_TIME_CODE,
1603 1, 0,
1604 sizeof(H265RawSEITimeCode),
1605 SEI_MESSAGE_RW(h265, sei_time_code),
1606 },
1607 {
1608 SEI_TYPE_ALPHA_CHANNEL_INFO,
1609 1, 0,
1610 sizeof(H265RawSEIAlphaChannelInfo),
1611 SEI_MESSAGE_RW(h265, sei_alpha_channel_info),
1612 },
1613 SEI_MESSAGE_TYPE_END
1614 };
1615
1616 5746 const SEIMessageTypeDescriptor *ff_cbs_sei_find_type(CodedBitstreamContext *ctx,
1617 int payload_type)
1618 {
1619 const SEIMessageTypeDescriptor *codec_list;
1620 int i;
1621
1622
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 45266 for (i = 0; cbs_sei_common_types[i].type >= 0; i++) {
1623
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 39646 if (cbs_sei_common_types[i].type == payload_type)
1624 126 return &cbs_sei_common_types[i];
1625 }
1626
1627
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 5620 switch (ctx->codec->codec_id) {
1628 1015 case AV_CODEC_ID_H264:
1629 1015 codec_list = cbs_sei_h264_types;
1630 1015 break;
1631 4605 case AV_CODEC_ID_H265:
1632 4605 codec_list = cbs_sei_h265_types;
1633 4605 break;
1634 ✗ default:
1635 ✗ return NULL;
1636 }
1637
1638
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 35993 for (i = 0; codec_list[i].type >= 0; i++) {
1639
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 35978 if (codec_list[i].type == payload_type)
1640 5605 return &codec_list[i];
1641 }
1642
1643 15 return NULL;
1644 }
1645