FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/oggenc.c
Date: 2026-04-24 19:58:39
Exec Total Coverage
Lines: 374 447 83.7%
Functions: 20 21 95.2%
Branches: 192 264 72.7%
Line Branch Exec Source
1 /*
2 * Ogg muxer
3 * Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at free dot fr>
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "config_components.h"
23
24 #include <stdint.h>
25
26 #include "libavutil/crc.h"
27 #include "libavutil/mathematics.h"
28 #include "libavutil/mem.h"
29 #include "libavutil/opt.h"
30 #include "libavutil/random_seed.h"
31 #include "libavcodec/xiph.h"
32 #include "libavcodec/bytestream.h"
33 #include "libavcodec/flac.h"
34 #include "avformat.h"
35 #include "avio_internal.h"
36 #include "internal.h"
37 #include "mux.h"
38 #include "version.h"
39 #include "vorbiscomment.h"
40
41 #define MAX_PAGE_SIZE 65025
42
43 typedef struct OGGPage {
44 int64_t start_granule;
45 int64_t granule;
46 int stream_index;
47 uint8_t flags;
48 uint8_t segments_count;
49 uint8_t segments[255];
50 uint8_t data[MAX_PAGE_SIZE];
51 uint16_t size;
52 } OGGPage;
53
54 typedef struct OGGStreamContext {
55 unsigned page_counter;
56 uint8_t *header[3];
57 int header_len[3];
58 /** for theora granule */
59 int kfgshift;
60 int64_t last_kf_pts;
61 int vrev;
62 /* for VP8 granule */
63 int isvp8;
64 int eos;
65 unsigned page_count; ///< number of page buffered
66 OGGPage page; ///< current page
67 unsigned serial_num; ///< serial number
68 int64_t last_granule; ///< last packet granule
69 int packet_seen; ///< true when packets have been submitted
70 } OGGStreamContext;
71
72 typedef struct OGGPageList {
73 OGGPage page;
74 struct OGGPageList *next;
75 } OGGPageList;
76
77 typedef struct OGGContext {
78 const AVClass *class;
79 OGGPageList *page_list;
80 #if LIBAVFORMAT_VERSION_MAJOR < 63
81 int pref_size; ///< preferred page size (0 => fill all segments)
82 #endif
83 int64_t pref_duration; ///< preferred page duration (0 => fill all segments)
84 int serial_offset;
85 int failed; // if true all packet submission will fail.
86 } OGGContext;
87
88 #define OFFSET(x) offsetof(OGGContext, x)
89 #define PARAM AV_OPT_FLAG_ENCODING_PARAM
90
91 static int ogg_write_trailer(AVFormatContext *s);
92
93 static const AVOption options[] = {
94 { "serial_offset", "serial number offset",
95 OFFSET(serial_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, PARAM },
96 #if LIBAVFORMAT_VERSION_MAJOR < 63
97 { "oggpagesize", "Set preferred Ogg page size.",
98 OFFSET(pref_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, MAX_PAGE_SIZE, PARAM | AV_OPT_FLAG_DEPRECATED },
99 { "pagesize", "preferred page size in bytes",
100 OFFSET(pref_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, MAX_PAGE_SIZE, PARAM | AV_OPT_FLAG_DEPRECATED },
101 #endif
102 { "page_duration", "preferred page duration, in microseconds",
103 OFFSET(pref_duration), AV_OPT_TYPE_INT64, { .i64 = 1000000 }, 0, INT64_MAX, PARAM },
104 { NULL },
105 };
106
107 static const AVClass ogg_muxer_class = {
108 .class_name = "Ogg (audio/video/Speex/Opus) muxer",
109 .item_name = av_default_item_name,
110 .option = options,
111 .version = LIBAVUTIL_VERSION_INT,
112 };
113
114 13 static void ogg_cleanup_stream(AVStream *st)
115 {
116 13 OGGStreamContext *oggstream = st->priv_data;
117
118
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 13 if (st->codecpar->codec_id == AV_CODEC_ID_FLAC ||
119
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 10 st->codecpar->codec_id == AV_CODEC_ID_SPEEX ||
120
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 10 st->codecpar->codec_id == AV_CODEC_ID_OPUS ||
121
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 8 st->codecpar->codec_id == AV_CODEC_ID_VP8) {
122 6 av_freep(&oggstream->header[0]);
123 }
124
125 13 av_freep(&oggstream->header[1]);
126 13 }
127
128 65 static void ogg_write_page(AVFormatContext *s, OGGPage *page, int extra_flags)
129 {
130 65 OGGStreamContext *oggstream = s->streams[page->stream_index]->priv_data;
131 65 uint8_t buf[4 + 1 + 1 + 8 + 4 + 4 + 4 + 1 + 255], *ptr = buf, *crc_pos;
132 65 const AVCRC *crc_table = av_crc_get_table(AV_CRC_32_IEEE);
133 uint32_t crc;
134
135 65 bytestream_put_le32(&ptr, MKTAG('O', 'g', 'g', 'S'));
136 65 bytestream_put_byte(&ptr, 0);
137 65 bytestream_put_byte(&ptr, page->flags | extra_flags);
138 65 bytestream_put_le64(&ptr, page->granule);
139 65 bytestream_put_le32(&ptr, oggstream->serial_num);
140 65 bytestream_put_le32(&ptr, oggstream->page_counter++);
141 65 crc_pos = ptr;
142 65 bytestream_put_le32(&ptr, 0);
143 65 bytestream_put_byte(&ptr, page->segments_count);
144 65 bytestream_put_buffer(&ptr, page->segments, page->segments_count);
145
146 65 crc = av_crc(crc_table, 0, buf, ptr - buf);
147 65 crc = av_crc(crc_table, crc, page->data, page->size);
148 65 bytestream_put_be32(&crc_pos, crc);
149
150 65 avio_write(s->pb, buf, ptr - buf);
151 65 avio_write(s->pb, page->data, page->size);
152 65 avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_FLUSH_POINT);
153 65 oggstream->page_count--;
154 65 }
155
156 119 static int ogg_key_granule(OGGStreamContext *oggstream, int64_t granule)
157 {
158
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 237 return (oggstream->kfgshift && !(granule & ((1<<oggstream->kfgshift)-1))) ||
159
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 118 (oggstream->isvp8 && !((granule >> 3) & 0x07ffffff));
160 }
161
162 1513 static int64_t ogg_granule_to_timestamp(OGGStreamContext *oggstream, int64_t granule)
163 {
164
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 1513 if (oggstream->kfgshift)
165 45 return (granule>>oggstream->kfgshift) +
166 45 (granule & ((1<<oggstream->kfgshift)-1));
167
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 1468 else if (oggstream->isvp8)
168 372 return granule >> 32;
169 else
170 1096 return granule;
171 }
172
173 66 static int ogg_compare_granule(AVFormatContext *s, OGGPage *next, OGGPage *page)
174 {
175 66 AVStream *st2 = s->streams[next->stream_index];
176 66 AVStream *st = s->streams[page->stream_index];
177 int64_t next_granule, cur_granule;
178
179
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 66 if (next->granule == -1 || page->granule == -1)
180 15 return 0;
181
182 102 next_granule = av_rescale_q(ogg_granule_to_timestamp(st2->priv_data, next->granule),
183 51 st2->time_base, AV_TIME_BASE_Q);
184 102 cur_granule = av_rescale_q(ogg_granule_to_timestamp(st->priv_data, page->granule),
185 51 st ->time_base, AV_TIME_BASE_Q);
186 51 return next_granule > cur_granule;
187 }
188
189 65 static int ogg_reset_cur_page(OGGStreamContext *oggstream)
190 {
191 65 oggstream->page.granule = -1;
192 65 oggstream->page.flags = 0;
193 65 oggstream->page.segments_count = 0;
194 65 oggstream->page.size = 0;
195 65 return 0;
196 }
197
198 65 static int ogg_buffer_page(AVFormatContext *s, OGGStreamContext *oggstream)
199 {
200 65 OGGContext *ogg = s->priv_data;
201 65 OGGPageList **p = &ogg->page_list;
202 65 OGGPageList *l = av_mallocz(sizeof(*l));
203
204
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 65 if (!l)
205 ✗ return AVERROR(ENOMEM);
206 65 l->page = oggstream->page;
207
208 65 oggstream->page.start_granule = ogg_granule_to_timestamp(oggstream, oggstream->page.granule);
209 65 oggstream->page_count++;
210 65 ogg_reset_cur_page(oggstream);
211
212
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 128 while (*p) {
213
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 66 if (ogg_compare_granule(s, &(*p)->page, &l->page))
214 3 break;
215 63 p = &(*p)->next;
216 }
217 65 l->next = *p;
218 65 *p = l;
219
220 65 return 0;
221 }
222
223 1103 static int ogg_buffer_data(AVFormatContext *s, AVStream *st,
224 const uint8_t *data, unsigned size, int64_t granule,
225 int header)
226 {
227 1103 OGGStreamContext *oggstream = st->priv_data;
228 1103 OGGContext *ogg = s->priv_data;
229 1103 int total_segments = size / 255 + 1;
230 1103 const uint8_t *p = data;
231 1103 int i, segments, len, flush = 0;
232
233 // Handles VFR by flushing page because this frame needs to have a timestamp
234 // For theora and VP8, keyframes also need to have a timestamp to correctly mark
235 // them as such, otherwise seeking will not work correctly at the very
236 // least with old libogg versions.
237 // Do not try to flush header packets though, that will create broken files.
238
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 1103 if ((st->codecpar->codec_id == AV_CODEC_ID_THEORA || st->codecpar->codec_id == AV_CODEC_ID_VP8) && !header &&
239 119 (ogg_granule_to_timestamp(oggstream, granule) >
240
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 238 ogg_granule_to_timestamp(oggstream, oggstream->last_granule) + 1 ||
241 119 ogg_key_granule(oggstream, granule))) {
242
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 2 if (oggstream->page.granule != -1)
243 ✗ ogg_buffer_page(s, oggstream);
244 2 flush = 1;
245 }
246
247 // avoid a continued page
248
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 1103 if (!header && oggstream->page.size > 0 &&
249
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 1036 MAX_PAGE_SIZE - oggstream->page.size < size) {
250 ✗ ogg_buffer_page(s, oggstream);
251 }
252
253
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 2211 for (i = 0; i < total_segments; ) {
254 1108 OGGPage *page = &oggstream->page;
255
256 1108 segments = FFMIN(total_segments - i, 255 - page->segments_count);
257
258
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 1108 if (i && !page->segments_count)
259 5 page->flags |= 1; // continued packet
260
261 1108 memset(page->segments+page->segments_count, 255, segments - 1);
262 1108 page->segments_count += segments - 1;
263
264 1108 len = FFMIN(size, segments*255);
265 1108 page->segments[page->segments_count++] = len - (segments-1)*255;
266
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 1108 if (len)
267 1108 memcpy(page->data+page->size, p, len);
268 1108 p += len;
269 1108 size -= len;
270 1108 i += segments;
271 1108 page->size += len;
272
273
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 1108 if (i == total_segments)
274 1103 page->granule = granule;
275
276 {
277 1108 AVRational time_base = s->streams[page->stream_index]->time_base;
278
279 1108 int64_t start = av_rescale_q(page->start_granule, time_base,
280 1108 AV_TIME_BASE_Q);
281 2216 int64_t next = av_rescale_q(ogg_granule_to_timestamp(oggstream, page->granule),
282 1108 time_base, AV_TIME_BASE_Q);
283
284
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 1108 if (page->segments_count == 255) {
285 5 ogg_buffer_page(s, oggstream);
286
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 1103 } else if (!header) {
287 #if LIBAVFORMAT_VERSION_MAJOR < 63
288
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 1070 if ((ogg->pref_size > 0 && page->size >= ogg->pref_size) ||
289
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 1070 (ogg->pref_duration > 0 && next - start >= ogg->pref_duration)) {
290 #else
291 if (ogg->pref_duration > 0 && next - start >= ogg->pref_duration) {
292 #endif
293 20 ogg_buffer_page(s, oggstream);
294 }
295 }
296 }
297 }
298
299
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 1103 if (flush && oggstream->page.granule != -1)
300 2 ogg_buffer_page(s, oggstream);
301
302 1103 return 0;
303 }
304
305 13 static uint8_t *ogg_write_vorbiscomment(int64_t offset, int bitexact,
306 int *header_len, AVDictionary **m, int framing_bit,
307 AVChapter **chapters, unsigned int nb_chapters)
308 {
309
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 13 const char *vendor = bitexact ? "ffmpeg" : LIBAVFORMAT_IDENT;
310 FFIOContext pb;
311 int64_t size;
312 uint8_t *p;
313
314 13 ff_metadata_conv(m, ff_vorbiscomment_metadata_conv, NULL);
315
316 13 size = ff_vorbiscomment_length(*m, vendor, chapters, nb_chapters);
317
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 13 if (size < 0)
318 ✗ return NULL;
319 13 size += offset + framing_bit;
320
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 13 if (size > INT_MAX)
321 ✗ return NULL;
322 13 p = av_mallocz(size);
323
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 13 if (!p)
324 ✗ return NULL;
325
326 13 ffio_init_write_context(&pb, p + offset, size - offset);
327 13 ff_vorbiscomment_write(&pb.pub, *m, vendor, chapters, nb_chapters);
328
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 13 if (framing_bit)
329 6 avio_w8(&pb.pub, 1);
330
331 13 *header_len = size;
332 13 return p;
333 }
334
335 3 static int ogg_build_flac_headers(AVCodecParameters *par,
336 OGGStreamContext *oggstream, int bitexact,
337 AVDictionary **m)
338 {
339 uint8_t *p;
340
341
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 3 if (par->extradata_size < FLAC_STREAMINFO_SIZE)
342 ✗ return AVERROR(EINVAL);
343
344 // first packet: STREAMINFO
345 3 oggstream->header_len[0] = 51;
346 3 oggstream->header[0] = av_mallocz(51); // per ogg flac specs
347 3 p = oggstream->header[0];
348
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 3 if (!p)
349 ✗ return AVERROR(ENOMEM);
350 3 bytestream_put_byte(&p, 0x7F);
351 3 bytestream_put_buffer(&p, "FLAC", 4);
352 3 bytestream_put_byte(&p, 1); // major version
353 3 bytestream_put_byte(&p, 0); // minor version
354 3 bytestream_put_be16(&p, 1); // headers packets without this one
355 3 bytestream_put_buffer(&p, "fLaC", 4);
356 3 bytestream_put_byte(&p, 0x00); // streaminfo
357 3 bytestream_put_be24(&p, 34);
358 3 bytestream_put_buffer(&p, par->extradata, FLAC_STREAMINFO_SIZE);
359
360 // second packet: VorbisComment
361 3 p = ogg_write_vorbiscomment(4, bitexact, &oggstream->header_len[1], m, 0, NULL, 0);
362
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 3 if (!p)
363 ✗ return AVERROR(ENOMEM);
364 3 oggstream->header[1] = p;
365 3 bytestream_put_byte(&p, 0x84); // last metadata block and vorbis comment
366 3 bytestream_put_be24(&p, oggstream->header_len[1] - 4);
367
368 3 return 0;
369 }
370
371 #define SPEEX_HEADER_SIZE 80
372
373 ✗ static int ogg_build_speex_headers(AVCodecParameters *par,
374 OGGStreamContext *oggstream, int bitexact,
375 AVDictionary **m)
376 {
377 uint8_t *p;
378
379 ✗ if (par->extradata_size < SPEEX_HEADER_SIZE)
380 ✗ return AVERROR_INVALIDDATA;
381
382 // first packet: Speex header
383 ✗ p = av_mallocz(SPEEX_HEADER_SIZE);
384 ✗ if (!p)
385 ✗ return AVERROR(ENOMEM);
386 ✗ oggstream->header[0] = p;
387 ✗ oggstream->header_len[0] = SPEEX_HEADER_SIZE;
388 ✗ bytestream_put_buffer(&p, par->extradata, SPEEX_HEADER_SIZE);
389 ✗ AV_WL32(&oggstream->header[0][68], 0); // set extra_headers to 0
390
391 // second packet: VorbisComment
392 ✗ p = ogg_write_vorbiscomment(0, bitexact, &oggstream->header_len[1], m, 0, NULL, 0);
393 ✗ if (!p)
394 ✗ return AVERROR(ENOMEM);
395 ✗ oggstream->header[1] = p;
396
397 ✗ return 0;
398 }
399
400 #define OPUS_HEADER_SIZE 19
401
402 2 static int ogg_build_opus_headers(AVCodecParameters *par,
403 OGGStreamContext *oggstream, int bitexact,
404 AVDictionary **m, AVChapter **chapters,
405 unsigned int nb_chapters)
406 {
407 uint8_t *p;
408
409
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 2 if (par->extradata_size < OPUS_HEADER_SIZE)
410 ✗ return AVERROR_INVALIDDATA;
411
412 /* first packet: Opus header */
413 2 p = av_mallocz(par->extradata_size);
414
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 2 if (!p)
415 ✗ return AVERROR(ENOMEM);
416 2 oggstream->header[0] = p;
417 2 oggstream->header_len[0] = par->extradata_size;
418 2 bytestream_put_buffer(&p, par->extradata, par->extradata_size);
419
420 /* second packet: VorbisComment */
421 2 p = ogg_write_vorbiscomment(8, bitexact, &oggstream->header_len[1], m, 0, chapters, nb_chapters);
422
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 2 if (!p)
423 ✗ return AVERROR(ENOMEM);
424 2 oggstream->header[1] = p;
425 2 bytestream_put_buffer(&p, "OpusTags", 8);
426
427 2 return 0;
428 }
429
430 #define VP8_HEADER_SIZE 26
431
432 1 static int ogg_build_vp8_headers(AVFormatContext *s, AVStream *st,
433 OGGStreamContext *oggstream, int bitexact)
434 {
435 1 AVCodecParameters *par = st->codecpar;
436 uint8_t *p;
437
438 /* first packet: VP8 header */
439 1 p = av_mallocz(VP8_HEADER_SIZE);
440
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 1 if (!p)
441 ✗ return AVERROR(ENOMEM);
442 1 oggstream->header[0] = p;
443 1 oggstream->header_len[0] = VP8_HEADER_SIZE;
444 1 bytestream_put_byte(&p, 0x4f); // HDRID
445 1 bytestream_put_buffer(&p, "VP80", 4); // Identifier
446 1 bytestream_put_byte(&p, 1); // HDRTYP
447 1 bytestream_put_byte(&p, 1); // VMAJ
448 1 bytestream_put_byte(&p, 0); // VMIN
449 1 bytestream_put_be16(&p, par->width);
450 1 bytestream_put_be16(&p, par->height);
451 1 bytestream_put_be24(&p, par->sample_aspect_ratio.num);
452 1 bytestream_put_be24(&p, par->sample_aspect_ratio.den);
453
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 1 if (st->r_frame_rate.num > 0 && st->r_frame_rate.den > 0) {
454 // OggVP8 requires pts to increase by 1 per visible frame, so use the least common
455 // multiple framerate if available.
456 1 av_log(s, AV_LOG_DEBUG, "Changing time base from %d/%d to %d/%d\n",
457 st->time_base.num, st->time_base.den,
458 st->r_frame_rate.den, st->r_frame_rate.num);
459 1 avpriv_set_pts_info(st, 64, st->r_frame_rate.den, st->r_frame_rate.num);
460 }
461 1 bytestream_put_be32(&p, st->time_base.den);
462 1 bytestream_put_be32(&p, st->time_base.num);
463
464 /* optional second packet: VorbisComment */
465
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 1 if (av_dict_count(st->metadata)) {
466 1 p = ogg_write_vorbiscomment(7, bitexact, &oggstream->header_len[1], &st->metadata, 0, NULL, 0);
467
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 1 if (!p)
468 ✗ return AVERROR(ENOMEM);
469 1 oggstream->header[1] = p;
470 1 bytestream_put_byte(&p, 0x4f); // HDRID
471 1 bytestream_put_buffer(&p, "VP80", 4); // Identifier
472 1 bytestream_put_byte(&p, 2); // HDRTYP
473 1 bytestream_put_byte(&p, 0x20);
474 }
475
476 1 oggstream->isvp8 = 1;
477
478 1 return 0;
479 }
480
481 1094 static void ogg_write_pages(AVFormatContext *s, int flush)
482 {
483 1094 OGGContext *ogg = s->priv_data;
484 OGGPageList *next, *p;
485
486
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 1094 if (!ogg->page_list)
487 176 return;
488
489
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 983 for (p = ogg->page_list; p; ) {
490 959 OGGStreamContext *oggstream =
491 959 s->streams[p->page.stream_index]->priv_data;
492
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 959 if (oggstream->page_count < 2 && !flush)
493 894 break;
494
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 84 ogg_write_page(s, &p->page,
495
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 19 flush == 1 && oggstream->page_count == 1 ? 4 : 0); // eos
496 65 next = p->next;
497 65 av_freep(&p);
498 65 p = next;
499 }
500 918 ogg->page_list = p;
501 }
502
503 // This function can be used on an initialized context to reinitialize the
504 // streams.
505 12 static int ogg_init(AVFormatContext *s)
506 {
507 12 OGGContext *ogg = s->priv_data;
508 12 OGGStreamContext *oggstream = NULL;
509 int i, j;
510
511
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 25 for (i = 0; i < s->nb_streams; i++) {
512 13 AVStream *st = s->streams[i];
513 13 unsigned serial_num = i + ogg->serial_offset;
514
515
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 13 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
516
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 11 if (st->codecpar->codec_id == AV_CODEC_ID_OPUS)
517 /* Opus requires a fixed 48kHz clock */
518 2 avpriv_set_pts_info(st, 64, 1, 48000);
519 else
520 9 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
521 }
522
523
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 13 if (st->codecpar->codec_id != AV_CODEC_ID_VORBIS &&
524
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 7 st->codecpar->codec_id != AV_CODEC_ID_THEORA &&
525
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 6 st->codecpar->codec_id != AV_CODEC_ID_SPEEX &&
526
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 6 st->codecpar->codec_id != AV_CODEC_ID_FLAC &&
527
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 3 st->codecpar->codec_id != AV_CODEC_ID_OPUS &&
528
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 1 st->codecpar->codec_id != AV_CODEC_ID_VP8) {
529 ✗ av_log(s, AV_LOG_ERROR, "Unsupported codec id in stream %d\n", i);
530 ✗ return AVERROR(EINVAL);
531 }
532
533
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 13 if ((!st->codecpar->extradata || !st->codecpar->extradata_size) &&
534
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 1 st->codecpar->codec_id != AV_CODEC_ID_VP8) {
535 ✗ av_log(s, AV_LOG_ERROR, "No extradata present\n");
536 ✗ return AVERROR_INVALIDDATA;
537 }
538 13 oggstream = st->priv_data;
539
540
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 13 if (!oggstream) {
541 10 oggstream = av_mallocz(sizeof(*oggstream));
542
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 10 if (!oggstream)
543 ✗ return AVERROR(ENOMEM);
544 10 st->priv_data = oggstream;
545 } else {
546 3 ogg_cleanup_stream(st);
547 3 memset(oggstream, 0, sizeof(*oggstream));
548 }
549
550 13 oggstream->page.stream_index = i;
551
552
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 13 if (!(s->flags & AVFMT_FLAG_BITEXACT))
553 do {
554 7 serial_num = av_get_random_seed();
555
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 7 for (j = 0; j < i; j++) {
556 ✗ OGGStreamContext *sc = s->streams[j]->priv_data;
557 ✗ if (serial_num == sc->serial_num)
558 ✗ break;
559 }
560
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 7 } while (j < i);
561 13 oggstream->serial_num = serial_num;
562
563 13 av_dict_copy(&st->metadata, s->metadata, AV_DICT_DONT_OVERWRITE);
564
565
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 13 if (st->codecpar->codec_id == AV_CODEC_ID_FLAC) {
566 3 int err = ogg_build_flac_headers(st->codecpar, oggstream,
567 3 s->flags & AVFMT_FLAG_BITEXACT,
568 &st->metadata);
569
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 3 if (err) {
570 ✗ av_log(s, AV_LOG_ERROR, "Error writing FLAC headers\n");
571 ✗ return err;
572 }
573
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 10 } else if (st->codecpar->codec_id == AV_CODEC_ID_SPEEX) {
574 ✗ int err = ogg_build_speex_headers(st->codecpar, oggstream,
575 ✗ s->flags & AVFMT_FLAG_BITEXACT,
576 &st->metadata);
577 ✗ if (err) {
578 ✗ av_log(s, AV_LOG_ERROR, "Error writing Speex headers\n");
579 ✗ return err;
580 }
581
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 10 } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
582 2 int err = ogg_build_opus_headers(st->codecpar, oggstream,
583 2 s->flags & AVFMT_FLAG_BITEXACT,
584 &st->metadata, s->chapters, s->nb_chapters);
585
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 2 if (err) {
586 ✗ av_log(s, AV_LOG_ERROR, "Error writing Opus headers\n");
587 ✗ return err;
588 }
589
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 8 } else if (st->codecpar->codec_id == AV_CODEC_ID_VP8) {
590 1 int err = ogg_build_vp8_headers(s, st, oggstream,
591 1 s->flags & AVFMT_FLAG_BITEXACT);
592
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 1 if (err) {
593 ✗ av_log(s, AV_LOG_ERROR, "Error writing VP8 headers\n");
594 ✗ return err;
595 }
596 } else {
597 uint8_t *p;
598
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 7 const char *cstr = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? "vorbis" : "theora";
599
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 7 int header_type = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 3 : 0x81;
600 7 int framing_bit = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 1 : 0;
601
602
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 7 if (avpriv_split_xiph_headers(st->codecpar->extradata, st->codecpar->extradata_size,
603 7 st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 30 : 42,
604
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 7 (const uint8_t**)oggstream->header, oggstream->header_len) < 0) {
605 ✗ av_log(s, AV_LOG_ERROR, "Extradata corrupted\n");
606 ✗ oggstream->header[1] = NULL;
607 ✗ return AVERROR_INVALIDDATA;
608 }
609
610 7 p = ogg_write_vorbiscomment(7, s->flags & AVFMT_FLAG_BITEXACT,
611 &oggstream->header_len[1], &st->metadata,
612 framing_bit, NULL, 0);
613 7 oggstream->header[1] = p;
614
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 7 if (!p)
615 ✗ return AVERROR(ENOMEM);
616
617 7 bytestream_put_byte(&p, header_type);
618 7 bytestream_put_buffer(&p, cstr, 6);
619
620
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 7 if (st->codecpar->codec_id == AV_CODEC_ID_THEORA) {
621 1 int den = AV_RB32(oggstream->header[0] + 22), num = AV_RB32(oggstream->header[0] + 26);
622 /* Make sure to use time base stored in the Theora stream header to write
623 correct timestamps */
624
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 1 if (st->time_base.num != num || st->time_base.den != den) {
625 1 av_log(s, AV_LOG_DEBUG, "Changing time base from %d/%d to %d/%d\n",
626 st->time_base.num, st->time_base.den, num, den);
627 1 avpriv_set_pts_info(st, 64, num, den);
628 }
629 /** KFGSHIFT is the width of the less significant section of the granule position
630 The less significant section is the frame count since the last keyframe */
631 1 oggstream->kfgshift = ((oggstream->header[0][40]&3)<<3)|(oggstream->header[0][41]>>5);
632 1 oggstream->vrev = oggstream->header[0][9];
633 1 av_log(s, AV_LOG_DEBUG, "theora kfgshift %d, vrev %d\n",
634 oggstream->kfgshift, oggstream->vrev);
635 }
636 }
637 }
638
639 12 return 0;
640 }
641
642 12 static int ogg_write_header(AVFormatContext *s)
643 {
644 12 OGGStreamContext *oggstream = NULL;
645 int i, j;
646
647
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 25 for (j = 0; j < s->nb_streams; j++) {
648 13 oggstream = s->streams[j]->priv_data;
649 13 ogg_buffer_data(s, s->streams[j], oggstream->header[0],
650 13 oggstream->header_len[0], 0, 1);
651 13 oggstream->page.flags |= 2; // bos
652 13 ogg_buffer_page(s, oggstream);
653 }
654
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 25 for (j = 0; j < s->nb_streams; j++) {
655 13 AVStream *st = s->streams[j];
656 13 oggstream = st->priv_data;
657
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 39 for (i = 1; i < 3; i++) {
658
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 26 if (oggstream->header_len[i])
659 20 ogg_buffer_data(s, st, oggstream->header[i],
660 20 oggstream->header_len[i], 0, 1);
661 }
662 13 ogg_buffer_page(s, oggstream);
663 }
664
665 12 oggstream->page.start_granule = AV_NOPTS_VALUE;
666
667 12 ogg_write_pages(s, 2);
668
669 12 return 0;
670 }
671
672 1070 static int ogg_check_new_metadata(AVFormatContext *s, AVPacket *pkt)
673 {
674 1070 int ret = 0;
675 size_t size;
676 1070 OGGContext *oggcontext = s->priv_data;
677 1070 AVStream *st = s->streams[pkt->stream_index];
678 1070 OGGStreamContext *oggstream = st->priv_data;
679 1070 const uint8_t *side_metadata = av_packet_get_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA, &size);
680
681
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 1070 if (!side_metadata)
682 1066 return 0;
683
684 // Don't restart on first packet.
685
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 4 if (!oggstream->packet_seen)
686 1 return 0;
687
688
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 3 if (s->nb_streams > 1) {
689 ✗ av_log(s, AV_LOG_WARNING, "Multiple streams present: cannot insert new metadata!\n");
690 ✗ return 0;
691 }
692
693
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 3 if (st->codecpar->codec_id != AV_CODEC_ID_VORBIS &&
694
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 2 st->codecpar->codec_id != AV_CODEC_ID_FLAC &&
695
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 1 st->codecpar->codec_id != AV_CODEC_ID_OPUS) {
696 ✗ av_log(s, AV_LOG_WARNING, "Inserting metadata is only supported for vorbis, flac and opus streams!\n");
697 ✗ return 0;
698 }
699
700 3 ret = ogg_write_trailer(s);
701
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 3 if (ret < 0)
702 ✗ goto end;
703
704 3 av_dict_free(&st->metadata);
705 3 ret = av_packet_unpack_dictionary(side_metadata, size, &st->metadata);
706
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 3 if (ret < 0)
707 ✗ goto end;
708
709 3 ret = ogg_init(s);
710
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 3 if (ret < 0)
711 ✗ goto end;
712
713 3 ret = ogg_write_header(s);
714
715 3 end:
716 3 oggcontext->failed = ret < 0;
717 3 return ret;
718 }
719
720 1070 static int ogg_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
721 {
722 1070 AVStream *st = s->streams[pkt->stream_index];
723 1070 OGGContext *oggcontext = s->priv_data;
724 1070 OGGStreamContext *oggstream = st->priv_data;
725 int ret;
726 int64_t granule;
727
728
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 1070 if (oggcontext->failed)
729 ✗ return AVERROR_INVALIDDATA;
730
731 1070 ret = ogg_check_new_metadata(s, pkt);
732
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 1070 if (ret < 0)
733 ✗ return ret;
734
735
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 1070 if (st->codecpar->codec_id == AV_CODEC_ID_THEORA) {
736
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 8 int64_t pts = oggstream->vrev < 1 ? pkt->pts : pkt->pts + pkt->duration;
737 int pframe_count;
738
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 8 if (pkt->flags & AV_PKT_FLAG_KEY)
739 1 oggstream->last_kf_pts = pts;
740 8 pframe_count = pts - oggstream->last_kf_pts;
741 // prevent frame count from overflow if key frame flag is not set
742
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 8 if (pframe_count >= (1<<oggstream->kfgshift)) {
743 ✗ oggstream->last_kf_pts += pframe_count;
744 ✗ pframe_count = 0;
745 }
746 8 granule = (oggstream->last_kf_pts<<oggstream->kfgshift) | pframe_count;
747
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 1062 } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS)
748 12 granule = pkt->pts + pkt->duration +
749 12 av_rescale_q(st->codecpar->initial_padding,
750 12 (AVRational){ 1, st->codecpar->sample_rate },
751 st->time_base);
752
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 1050 else if (st->codecpar->codec_id == AV_CODEC_ID_VP8) {
753 int64_t pts, invcnt, dist;
754 int visible;
755
756 111 visible = (pkt->data[0] >> 4) & 1;
757 111 pts = pkt->pts + pkt->duration;
758 111 invcnt = (oggstream->last_granule >> 30) & 3;
759
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 111 invcnt = visible ? 3 : (invcnt == 3 ? 0 : invcnt + 1);
760
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 111 dist = (pkt->flags & AV_PKT_FLAG_KEY) ? 0 : ((oggstream->last_granule >> 3) & 0x07ffffff) + 1;
761
762 111 granule = (pts << 32) | (invcnt << 30) | (dist << 3);
763 } else
764 939 granule = pkt->pts + pkt->duration;
765
766
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 1070 if (oggstream->page.start_granule == AV_NOPTS_VALUE)
767 12 oggstream->page.start_granule = pkt->pts;
768
769 1070 ret = ogg_buffer_data(s, st, pkt->data, pkt->size, granule, 0);
770
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 1070 if (ret < 0)
771 ✗ return ret;
772
773 1070 ogg_write_pages(s, 0);
774
775 1070 oggstream->last_granule = granule;
776 1070 oggstream->packet_seen = 1;
777
778 1070 return 0;
779 }
780
781 1071 static int ogg_write_packet(AVFormatContext *s, AVPacket *pkt)
782 {
783 int i;
784
785
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 1071 if (pkt)
786
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 1071 return pkt->size || !pkt->side_data_elems ? ogg_write_packet_internal(s, pkt) : 0;
787
788 ✗ for (i = 0; i < s->nb_streams; i++) {
789 ✗ OGGStreamContext *oggstream = s->streams[i]->priv_data;
790 ✗ if (oggstream->page.segments_count)
791 ✗ ogg_buffer_page(s, oggstream);
792 }
793
794 ✗ ogg_write_pages(s, 2);
795 ✗ return 1;
796 }
797
798 12 static int ogg_write_trailer(AVFormatContext *s)
799 {
800 int i;
801
802 /* flush current page if needed */
803
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 25 for (i = 0; i < s->nb_streams; i++) {
804 13 OGGStreamContext *oggstream = s->streams[i]->priv_data;
805
806
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 13 if (oggstream->page.segments_count)
807 12 ogg_buffer_page(s, oggstream);
808 }
809
810 12 ogg_write_pages(s, 1);
811
812 12 return 0;
813 }
814
815 9 static void ogg_free(AVFormatContext *s)
816 {
817 9 OGGContext *ogg = s->priv_data;
818 9 OGGPageList *p = ogg->page_list;
819 int i;
820
821
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 19 for (i = 0; i < s->nb_streams; i++) {
822 10 AVStream *st = s->streams[i];
823
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 10 if (st->priv_data)
824 10 ogg_cleanup_stream(st);
825 }
826
827
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 9 while (p) {
828 ✗ OGGPageList *next = p->next;
829 ✗ av_free(p);
830 ✗ p = next;
831 }
832 9 ogg->page_list = NULL;
833 9 }
834
835 #if CONFIG_OGG_MUXER
836 const FFOutputFormat ff_ogg_muxer = {
837 .p.name = "ogg",
838 .p.long_name = NULL_IF_CONFIG_SMALL("Ogg"),
839 .p.mime_type = "application/ogg",
840 .p.extensions = "ogg"
841 #if !CONFIG_OGV_MUXER
842 ",ogv"
843 #endif
844 #if !CONFIG_SPX_MUXER
845 ",spx"
846 #endif
847 #if !CONFIG_OPUS_MUXER
848 ",opus"
849 #endif
850 ,
851 .priv_data_size = sizeof(OGGContext),
852 .p.audio_codec = CONFIG_LIBVORBIS_ENCODER ?
853 AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
854 .p.video_codec = AV_CODEC_ID_THEORA,
855 .init = ogg_init,
856 .write_header = ogg_write_header,
857 .write_packet = ogg_write_packet,
858 .write_trailer = ogg_write_trailer,
859 .deinit = ogg_free,
860 .p.flags = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT,
861 .p.priv_class = &ogg_muxer_class,
862 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
863 };
864 #endif
865
866 #if CONFIG_OGA_MUXER
867 const FFOutputFormat ff_oga_muxer = {
868 .p.name = "oga",
869 .p.long_name = NULL_IF_CONFIG_SMALL("Ogg Audio"),
870 .p.mime_type = "audio/ogg",
871 .p.extensions = "oga",
872 .priv_data_size = sizeof(OGGContext),
873 .p.audio_codec = AV_CODEC_ID_FLAC,
874 .init = ogg_init,
875 .write_header = ogg_write_header,
876 .write_packet = ogg_write_packet,
877 .write_trailer = ogg_write_trailer,
878 .deinit = ogg_free,
879 .p.flags = AVFMT_TS_NEGATIVE,
880 .p.priv_class = &ogg_muxer_class,
881 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
882 };
883 #endif
884
885 #if CONFIG_OGV_MUXER
886 const FFOutputFormat ff_ogv_muxer = {
887 .p.name = "ogv",
888 .p.long_name = NULL_IF_CONFIG_SMALL("Ogg Video"),
889 .p.mime_type = "video/ogg",
890 .p.extensions = "ogv",
891 .priv_data_size = sizeof(OGGContext),
892 .p.audio_codec = CONFIG_LIBVORBIS_ENCODER ?
893 AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
894 .p.video_codec = CONFIG_LIBTHEORA_ENCODER ?
895 AV_CODEC_ID_THEORA : AV_CODEC_ID_VP8,
896 .init = ogg_init,
897 .write_header = ogg_write_header,
898 .write_packet = ogg_write_packet,
899 .write_trailer = ogg_write_trailer,
900 .deinit = ogg_free,
901 .p.flags = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT,
902 .p.priv_class = &ogg_muxer_class,
903 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
904 };
905 #endif
906
907 #if CONFIG_SPX_MUXER
908 const FFOutputFormat ff_spx_muxer = {
909 .p.name = "spx",
910 .p.long_name = NULL_IF_CONFIG_SMALL("Ogg Speex"),
911 .p.mime_type = "audio/ogg",
912 .p.extensions = "spx",
913 .priv_data_size = sizeof(OGGContext),
914 .p.audio_codec = AV_CODEC_ID_SPEEX,
915 .init = ogg_init,
916 .write_header = ogg_write_header,
917 .write_packet = ogg_write_packet,
918 .write_trailer = ogg_write_trailer,
919 .deinit = ogg_free,
920 .p.flags = AVFMT_TS_NEGATIVE,
921 .p.priv_class = &ogg_muxer_class,
922 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
923 };
924 #endif
925
926 #if CONFIG_OPUS_MUXER
927 const FFOutputFormat ff_opus_muxer = {
928 .p.name = "opus",
929 .p.long_name = NULL_IF_CONFIG_SMALL("Ogg Opus"),
930 .p.mime_type = "audio/ogg",
931 .p.extensions = "opus",
932 .priv_data_size = sizeof(OGGContext),
933 .p.audio_codec = AV_CODEC_ID_OPUS,
934 .init = ogg_init,
935 .write_header = ogg_write_header,
936 .write_packet = ogg_write_packet,
937 .write_trailer = ogg_write_trailer,
938 .deinit = ogg_free,
939 .p.flags = AVFMT_TS_NEGATIVE,
940 .p.priv_class = &ogg_muxer_class,
941 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
942 };
943 #endif
944