FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/oggenc.c
Date: 2026-09-28 17:50:41
Exec Total Coverage
Lines: 386 459 84.1%
Functions: 22 23 95.7%
Branches: 201 270 74.4%
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 int64_t pref_duration; ///< preferred page duration (0 => fill all segments)
81 int serial_offset;
82 int failed; // if true all packet submission will fail.
83 } OGGContext;
84
85 #define OFFSET(x) offsetof(OGGContext, x)
86 #define PARAM AV_OPT_FLAG_ENCODING_PARAM
87
88 static int ogg_write_trailer(AVFormatContext *s);
89
90 static const AVOption options[] = {
91 { "serial_offset", "serial number offset, -1 to derive it from the stream headers",
92 OFFSET(serial_offset), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, PARAM },
93 { "page_duration", "preferred page duration, in microseconds",
94 OFFSET(pref_duration), AV_OPT_TYPE_INT64, { .i64 = 1000000 }, 0, INT64_MAX, PARAM },
95 { NULL },
96 };
97
98 static const AVClass ogg_muxer_class = {
99 .class_name = "Ogg (audio/video/Speex/Opus) muxer",
100 .item_name = av_default_item_name,
101 .option = options,
102 .version = LIBAVUTIL_VERSION_INT,
103 };
104
105 17 static void ogg_cleanup_stream(AVStream *st)
106 {
107 17 OGGStreamContext *oggstream = st->priv_data;
108
109
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 17 if (st->codecpar->codec_id == AV_CODEC_ID_FLAC ||
110
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 10 st->codecpar->codec_id == AV_CODEC_ID_SPEEX ||
111
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 10 st->codecpar->codec_id == AV_CODEC_ID_OPUS ||
112
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 8 st->codecpar->codec_id == AV_CODEC_ID_VP8) {
113 10 av_freep(&oggstream->header[0]);
114 }
115
116 17 av_freep(&oggstream->header[1]);
117 17 }
118
119 77 static void ogg_write_page(AVFormatContext *s, OGGPage *page, int extra_flags)
120 {
121 77 OGGStreamContext *oggstream = s->streams[page->stream_index]->priv_data;
122 77 uint8_t buf[4 + 1 + 1 + 8 + 4 + 4 + 4 + 1 + 255], *ptr = buf, *crc_pos;
123 77 const AVCRC *crc_table = av_crc_get_table(AV_CRC_32_IEEE);
124 uint32_t crc;
125
126 77 bytestream_put_le32(&ptr, MKTAG('O', 'g', 'g', 'S'));
127 77 bytestream_put_byte(&ptr, 0);
128 77 bytestream_put_byte(&ptr, page->flags | extra_flags);
129 77 bytestream_put_le64(&ptr, page->granule);
130 77 bytestream_put_le32(&ptr, oggstream->serial_num);
131 77 bytestream_put_le32(&ptr, oggstream->page_counter++);
132 77 crc_pos = ptr;
133 77 bytestream_put_le32(&ptr, 0);
134 77 bytestream_put_byte(&ptr, page->segments_count);
135 77 bytestream_put_buffer(&ptr, page->segments, page->segments_count);
136
137 77 crc = av_crc(crc_table, 0, buf, ptr - buf);
138 77 crc = av_crc(crc_table, crc, page->data, page->size);
139 77 bytestream_put_be32(&crc_pos, crc);
140
141 77 avio_write(s->pb, buf, ptr - buf);
142 77 avio_write(s->pb, page->data, page->size);
143 77 avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_FLUSH_POINT);
144 77 oggstream->page_count--;
145 77 }
146
147 119 static int ogg_key_granule(OGGStreamContext *oggstream, int64_t granule)
148 {
149
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 237 return (oggstream->kfgshift && !(granule & ((1<<oggstream->kfgshift)-1))) ||
150
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 118 (oggstream->isvp8 && !((granule >> 3) & 0x07ffffff));
151 }
152
153 1564 static int64_t ogg_granule_to_timestamp(OGGStreamContext *oggstream, int64_t granule)
154 {
155
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 1564 if (oggstream->kfgshift)
156 45 return (granule>>oggstream->kfgshift) +
157 45 (granule & ((1<<oggstream->kfgshift)-1));
158
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 1519 else if (oggstream->isvp8)
159 372 return granule >> 32;
160 else
161 1147 return granule;
162 }
163
164 70 static int ogg_compare_granule(AVFormatContext *s, OGGPage *next, OGGPage *page)
165 {
166 70 AVStream *st2 = s->streams[next->stream_index];
167 70 AVStream *st = s->streams[page->stream_index];
168 int64_t next_granule, cur_granule;
169
170
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 70 if (next->granule == -1 || page->granule == -1)
171 15 return 0;
172
173 110 next_granule = av_rescale_q(ogg_granule_to_timestamp(st2->priv_data, next->granule),
174 55 st2->time_base, AV_TIME_BASE_Q);
175 110 cur_granule = av_rescale_q(ogg_granule_to_timestamp(st->priv_data, page->granule),
176 55 st ->time_base, AV_TIME_BASE_Q);
177 55 return next_granule > cur_granule;
178 }
179
180 77 static int ogg_reset_cur_page(OGGStreamContext *oggstream)
181 {
182 77 oggstream->page.granule = -1;
183 77 oggstream->page.flags = 0;
184 77 oggstream->page.segments_count = 0;
185 77 oggstream->page.size = 0;
186 77 return 0;
187 }
188
189 77 static int ogg_buffer_page(AVFormatContext *s, OGGStreamContext *oggstream)
190 {
191 77 OGGContext *ogg = s->priv_data;
192 77 OGGPageList **p = &ogg->page_list;
193 77 OGGPageList *l = av_mallocz(sizeof(*l));
194
195
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 77 if (!l)
196 ✗ return AVERROR(ENOMEM);
197 77 l->page = oggstream->page;
198
199 77 oggstream->page.start_granule = ogg_granule_to_timestamp(oggstream, oggstream->page.granule);
200 77 oggstream->page_count++;
201 77 ogg_reset_cur_page(oggstream);
202
203
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 144 while (*p) {
204
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 70 if (ogg_compare_granule(s, &(*p)->page, &l->page))
205 3 break;
206 67 p = &(*p)->next;
207 }
208 77 l->next = *p;
209 77 *p = l;
210
211 77 return 0;
212 }
213
214 1134 static int ogg_buffer_data(AVFormatContext *s, AVStream *st,
215 const uint8_t *data, unsigned size, int64_t granule,
216 int header)
217 {
218 1134 OGGStreamContext *oggstream = st->priv_data;
219 1134 OGGContext *ogg = s->priv_data;
220 1134 int total_segments = size / 255 + 1;
221 1134 const uint8_t *p = data;
222 1134 int i, segments, len, flush = 0;
223
224 // Handles VFR by flushing page because this frame needs to have a timestamp
225 // For theora and VP8, keyframes also need to have a timestamp to correctly mark
226 // them as such, otherwise seeking will not work correctly at the very
227 // least with old libogg versions.
228 // Do not try to flush header packets though, that will create broken files.
229
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 1134 if ((st->codecpar->codec_id == AV_CODEC_ID_THEORA || st->codecpar->codec_id == AV_CODEC_ID_VP8) && !header &&
230 119 (ogg_granule_to_timestamp(oggstream, granule) >
231
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 238 ogg_granule_to_timestamp(oggstream, oggstream->last_granule) + 1 ||
232 119 ogg_key_granule(oggstream, granule))) {
233
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 2 if (oggstream->page.granule != -1)
234 ✗ ogg_buffer_page(s, oggstream);
235 2 flush = 1;
236 }
237
238 // avoid a continued page
239
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 1134 if (!header && oggstream->page.size > 0 &&
240
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 1055 MAX_PAGE_SIZE - oggstream->page.size < size) {
241 ✗ ogg_buffer_page(s, oggstream);
242 }
243
244
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 2273 for (i = 0; i < total_segments; ) {
245 1139 OGGPage *page = &oggstream->page;
246
247 1139 segments = FFMIN(total_segments - i, 255 - page->segments_count);
248
249
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 1139 if (i && !page->segments_count)
250 5 page->flags |= 1; // continued packet
251
252 1139 memset(page->segments+page->segments_count, 255, segments - 1);
253 1139 page->segments_count += segments - 1;
254
255 1139 len = FFMIN(size, segments*255);
256 1139 page->segments[page->segments_count++] = len - (segments-1)*255;
257
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 1139 if (len)
258 1139 memcpy(page->data+page->size, p, len);
259 1139 p += len;
260 1139 size -= len;
261 1139 i += segments;
262 1139 page->size += len;
263
264
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 1139 if (i == total_segments)
265 1134 page->granule = granule;
266
267 {
268 1139 AVRational time_base = s->streams[page->stream_index]->time_base;
269
270 1139 int64_t start = av_rescale_q(page->start_granule, time_base,
271 1139 AV_TIME_BASE_Q);
272 2278 int64_t next = av_rescale_q(ogg_granule_to_timestamp(oggstream, page->granule),
273 1139 time_base, AV_TIME_BASE_Q);
274
275
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 1139 if (page->segments_count == 255) {
276 5 ogg_buffer_page(s, oggstream);
277
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 1134 } else if (!header) {
278
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 1093 if (ogg->pref_duration > 0 && next - start >= ogg->pref_duration) {
279 20 ogg_buffer_page(s, oggstream);
280 }
281 }
282 }
283 }
284
285
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 1134 if (flush && oggstream->page.granule != -1)
286 2 ogg_buffer_page(s, oggstream);
287
288 1134 return 0;
289 }
290
291 17 static uint8_t *ogg_write_vorbiscomment(int64_t offset, int bitexact,
292 int *header_len, AVDictionary **m, int framing_bit,
293 AVChapter **chapters, unsigned int nb_chapters)
294 {
295
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 17 const char *vendor = bitexact ? "ffmpeg" : LIBAVFORMAT_IDENT;
296 FFIOContext pb;
297 int64_t size;
298 uint8_t *p;
299
300 17 ff_metadata_conv(m, ff_vorbiscomment_metadata_conv, NULL);
301
302 17 size = ff_vorbiscomment_length(*m, vendor, chapters, nb_chapters);
303
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 17 if (size < 0)
304 ✗ return NULL;
305 17 size += offset + framing_bit;
306
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 17 if (size > INT_MAX)
307 ✗ return NULL;
308 17 p = av_mallocz(size);
309
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 17 if (!p)
310 ✗ return NULL;
311
312 17 ffio_init_write_context(&pb, p + offset, size - offset);
313 17 ff_vorbiscomment_write(&pb.pub, *m, vendor, chapters, nb_chapters);
314
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 17 if (framing_bit)
315 6 avio_w8(&pb.pub, 1);
316
317 17 *header_len = size;
318 17 return p;
319 }
320
321 7 static int ogg_build_flac_headers(AVCodecParameters *par,
322 OGGStreamContext *oggstream, int bitexact,
323 AVDictionary **m)
324 {
325 uint8_t *p;
326
327
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 7 if (par->extradata_size < FLAC_STREAMINFO_SIZE)
328 ✗ return AVERROR(EINVAL);
329
330 // first packet: STREAMINFO
331 7 oggstream->header_len[0] = 51;
332 7 oggstream->header[0] = av_mallocz(51); // per ogg flac specs
333 7 p = oggstream->header[0];
334
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 7 if (!p)
335 ✗ return AVERROR(ENOMEM);
336 7 bytestream_put_byte(&p, 0x7F);
337 7 bytestream_put_buffer(&p, "FLAC", 4);
338 7 bytestream_put_byte(&p, 1); // major version
339 7 bytestream_put_byte(&p, 0); // minor version
340 7 bytestream_put_be16(&p, 1); // headers packets without this one
341 7 bytestream_put_buffer(&p, "fLaC", 4);
342 7 bytestream_put_byte(&p, 0x00); // streaminfo
343 7 bytestream_put_be24(&p, 34);
344 7 bytestream_put_buffer(&p, par->extradata, FLAC_STREAMINFO_SIZE);
345
346 // second packet: VorbisComment
347 7 p = ogg_write_vorbiscomment(4, bitexact, &oggstream->header_len[1], m, 0, NULL, 0);
348
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 7 if (!p)
349 ✗ return AVERROR(ENOMEM);
350 7 oggstream->header[1] = p;
351 7 bytestream_put_byte(&p, 0x84); // last metadata block and vorbis comment
352 7 bytestream_put_be24(&p, oggstream->header_len[1] - 4);
353
354 7 return 0;
355 }
356
357 #define SPEEX_HEADER_SIZE 80
358
359 ✗ static int ogg_build_speex_headers(AVCodecParameters *par,
360 OGGStreamContext *oggstream, int bitexact,
361 AVDictionary **m)
362 {
363 uint8_t *p;
364
365 ✗ if (par->extradata_size < SPEEX_HEADER_SIZE)
366 ✗ return AVERROR_INVALIDDATA;
367
368 // first packet: Speex header
369 ✗ p = av_mallocz(SPEEX_HEADER_SIZE);
370 ✗ if (!p)
371 ✗ return AVERROR(ENOMEM);
372 ✗ oggstream->header[0] = p;
373 ✗ oggstream->header_len[0] = SPEEX_HEADER_SIZE;
374 ✗ bytestream_put_buffer(&p, par->extradata, SPEEX_HEADER_SIZE);
375 ✗ AV_WL32(&oggstream->header[0][68], 0); // set extra_headers to 0
376
377 // second packet: VorbisComment
378 ✗ p = ogg_write_vorbiscomment(0, bitexact, &oggstream->header_len[1], m, 0, NULL, 0);
379 ✗ if (!p)
380 ✗ return AVERROR(ENOMEM);
381 ✗ oggstream->header[1] = p;
382
383 ✗ return 0;
384 }
385
386 #define OPUS_HEADER_SIZE 19
387
388 2 static int ogg_build_opus_headers(AVCodecParameters *par,
389 OGGStreamContext *oggstream, int bitexact,
390 AVDictionary **m, AVChapter **chapters,
391 unsigned int nb_chapters)
392 {
393 uint8_t *p;
394
395
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 2 if (par->extradata_size < OPUS_HEADER_SIZE)
396 ✗ return AVERROR_INVALIDDATA;
397
398 /* first packet: Opus header */
399 2 p = av_mallocz(par->extradata_size);
400
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 2 if (!p)
401 ✗ return AVERROR(ENOMEM);
402 2 oggstream->header[0] = p;
403 2 oggstream->header_len[0] = par->extradata_size;
404 2 bytestream_put_buffer(&p, par->extradata, par->extradata_size);
405
406 /* second packet: VorbisComment */
407 2 p = ogg_write_vorbiscomment(8, bitexact, &oggstream->header_len[1], m, 0, chapters, nb_chapters);
408
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 2 if (!p)
409 ✗ return AVERROR(ENOMEM);
410 2 oggstream->header[1] = p;
411 2 bytestream_put_buffer(&p, "OpusTags", 8);
412
413 2 return 0;
414 }
415
416 #define VP8_HEADER_SIZE 26
417
418 1 static int ogg_build_vp8_headers(AVFormatContext *s, AVStream *st,
419 OGGStreamContext *oggstream, int bitexact)
420 {
421 1 AVCodecParameters *par = st->codecpar;
422 uint8_t *p;
423
424 /* first packet: VP8 header */
425 1 p = av_mallocz(VP8_HEADER_SIZE);
426
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 1 if (!p)
427 ✗ return AVERROR(ENOMEM);
428 1 oggstream->header[0] = p;
429 1 oggstream->header_len[0] = VP8_HEADER_SIZE;
430 1 bytestream_put_byte(&p, 0x4f); // HDRID
431 1 bytestream_put_buffer(&p, "VP80", 4); // Identifier
432 1 bytestream_put_byte(&p, 1); // HDRTYP
433 1 bytestream_put_byte(&p, 1); // VMAJ
434 1 bytestream_put_byte(&p, 0); // VMIN
435 1 bytestream_put_be16(&p, par->width);
436 1 bytestream_put_be16(&p, par->height);
437 1 bytestream_put_be24(&p, par->sample_aspect_ratio.num);
438 1 bytestream_put_be24(&p, par->sample_aspect_ratio.den);
439
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 1 if (st->r_frame_rate.num > 0 && st->r_frame_rate.den > 0) {
440 // OggVP8 requires pts to increase by 1 per visible frame, so use the least common
441 // multiple framerate if available.
442 1 av_log(s, AV_LOG_DEBUG, "Changing time base from %d/%d to %d/%d\n",
443 st->time_base.num, st->time_base.den,
444 st->r_frame_rate.den, st->r_frame_rate.num);
445 1 avpriv_set_pts_info(st, 64, st->r_frame_rate.den, st->r_frame_rate.num);
446 }
447 1 bytestream_put_be32(&p, st->time_base.den);
448 1 bytestream_put_be32(&p, st->time_base.num);
449
450 /* optional second packet: VorbisComment */
451
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 1 if (av_dict_count(st->metadata)) {
452 1 p = ogg_write_vorbiscomment(7, bitexact, &oggstream->header_len[1], &st->metadata, 0, NULL, 0);
453
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 1 if (!p)
454 ✗ return AVERROR(ENOMEM);
455 1 oggstream->header[1] = p;
456 1 bytestream_put_byte(&p, 0x4f); // HDRID
457 1 bytestream_put_buffer(&p, "VP80", 4); // Identifier
458 1 bytestream_put_byte(&p, 2); // HDRTYP
459 1 bytestream_put_byte(&p, 0x20);
460 }
461
462 1 oggstream->isvp8 = 1;
463
464 1 return 0;
465 }
466
467 1125 static void ogg_write_pages(AVFormatContext *s, int flush)
468 {
469 1125 OGGContext *ogg = s->priv_data;
470 OGGPageList *next, *p;
471
472
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 1125 if (!ogg->page_list)
473 197 return;
474
475
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 1005 for (p = ogg->page_list; p; ) {
476 973 OGGStreamContext *oggstream =
477 973 s->streams[p->page.stream_index]->priv_data;
478
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 973 if (oggstream->page_count < 2 && !flush)
479 896 break;
480
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 100 ogg_write_page(s, &p->page,
481
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 23 flush == 1 && oggstream->page_count == 1 ? 4 : 0); // eos
482 77 next = p->next;
483 77 av_freep(&p);
484 77 p = next;
485 }
486 928 ogg->page_list = p;
487 }
488
489 /**
490 * Derive a bitexact serial number from the stream's header packets, which
491 * makes links muxed apart unlikely to share one, though not certain not to.
492 */
493 8 static unsigned ogg_bitexact_serial(const OGGStreamContext *oggstream, unsigned seed)
494 {
495 8 const AVCRC *table = av_crc_get_table(AV_CRC_32_IEEE);
496 8 uint32_t crc = seed;
497
498
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 32 for (int i = 0; i < 3; i++)
499
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 24 if (oggstream->header_len[i])
500 20 crc = av_crc(table, crc, oggstream->header[i], oggstream->header_len[i]);
501
502 8 return crc;
503 }
504
505 17 static int ogg_serial_in_use(AVFormatContext *s, int nb_streams, unsigned serial_num)
506 {
507
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 18 for (int i = 0; i < nb_streams; i++) {
508 1 const OGGStreamContext *oggstream = s->streams[i]->priv_data;
509
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 1 if (oggstream->serial_num == serial_num)
510 ✗ return 1;
511 }
512 17 return 0;
513 }
514
515 // This function can be used on an initialized context to reinitialize the
516 // streams.
517 16 static int ogg_init(AVFormatContext *s)
518 {
519 16 OGGContext *ogg = s->priv_data;
520 16 OGGStreamContext *oggstream = NULL;
521 int i;
522
523
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 33 for (i = 0; i < s->nb_streams; i++) {
524 17 AVStream *st = s->streams[i];
525 unsigned serial_num;
526
527
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 17 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
528
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 15 if (st->codecpar->codec_id == AV_CODEC_ID_OPUS)
529 /* Opus requires a fixed 48kHz clock */
530 2 avpriv_set_pts_info(st, 64, 1, 48000);
531 else
532 13 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
533 }
534
535
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 17 if (st->codecpar->codec_id != AV_CODEC_ID_VORBIS &&
536
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 11 st->codecpar->codec_id != AV_CODEC_ID_THEORA &&
537
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 10 st->codecpar->codec_id != AV_CODEC_ID_SPEEX &&
538
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 10 st->codecpar->codec_id != AV_CODEC_ID_FLAC &&
539
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 3 st->codecpar->codec_id != AV_CODEC_ID_OPUS &&
540
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 1 st->codecpar->codec_id != AV_CODEC_ID_VP8) {
541 ✗ av_log(s, AV_LOG_ERROR, "Unsupported codec id in stream %d\n", i);
542 ✗ return AVERROR(EINVAL);
543 }
544
545
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 17 if ((!st->codecpar->extradata || !st->codecpar->extradata_size) &&
546
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 1 st->codecpar->codec_id != AV_CODEC_ID_VP8) {
547 ✗ av_log(s, AV_LOG_ERROR, "No extradata present\n");
548 ✗ return AVERROR_INVALIDDATA;
549 }
550 17 oggstream = st->priv_data;
551
552
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 17 if (!oggstream) {
553 12 oggstream = av_mallocz(sizeof(*oggstream));
554
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 12 if (!oggstream)
555 ✗ return AVERROR(ENOMEM);
556 12 st->priv_data = oggstream;
557 } else {
558 5 ogg_cleanup_stream(st);
559 5 memset(oggstream, 0, sizeof(*oggstream));
560 }
561
562 17 oggstream->page.stream_index = i;
563
564 17 av_dict_copy(&st->metadata, s->metadata, AV_DICT_DONT_OVERWRITE);
565
566
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 17 if (st->codecpar->codec_id == AV_CODEC_ID_FLAC) {
567 7 int err = ogg_build_flac_headers(st->codecpar, oggstream,
568 7 s->flags & AVFMT_FLAG_BITEXACT,
569 &st->metadata);
570
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 7 if (err) {
571 ✗ av_log(s, AV_LOG_ERROR, "Error writing FLAC headers\n");
572 ✗ return err;
573 }
574
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 10 } else if (st->codecpar->codec_id == AV_CODEC_ID_SPEEX) {
575 ✗ int err = ogg_build_speex_headers(st->codecpar, oggstream,
576 ✗ s->flags & AVFMT_FLAG_BITEXACT,
577 &st->metadata);
578 ✗ if (err) {
579 ✗ av_log(s, AV_LOG_ERROR, "Error writing Speex headers\n");
580 ✗ return err;
581 }
582
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 10 } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
583 2 int err = ogg_build_opus_headers(st->codecpar, oggstream,
584 2 s->flags & AVFMT_FLAG_BITEXACT,
585 &st->metadata, s->chapters, s->nb_chapters);
586
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 2 if (err) {
587 ✗ av_log(s, AV_LOG_ERROR, "Error writing Opus headers\n");
588 ✗ return err;
589 }
590
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 8 } else if (st->codecpar->codec_id == AV_CODEC_ID_VP8) {
591 1 int err = ogg_build_vp8_headers(s, st, oggstream,
592 1 s->flags & AVFMT_FLAG_BITEXACT);
593
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 1 if (err) {
594 ✗ av_log(s, AV_LOG_ERROR, "Error writing VP8 headers\n");
595 ✗ return err;
596 }
597 } else {
598 uint8_t *p;
599
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 7 const char *cstr = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? "vorbis" : "theora";
600
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 7 int header_type = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 3 : 0x81;
601 7 int framing_bit = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 1 : 0;
602
603
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 7 if (avpriv_split_xiph_headers(st->codecpar->extradata, st->codecpar->extradata_size,
604 7 st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 30 : 42,
605
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 7 (const uint8_t**)oggstream->header, oggstream->header_len) < 0) {
606 ✗ av_log(s, AV_LOG_ERROR, "Extradata corrupted\n");
607 ✗ oggstream->header[1] = NULL;
608 ✗ return AVERROR_INVALIDDATA;
609 }
610
611 7 p = ogg_write_vorbiscomment(7, s->flags & AVFMT_FLAG_BITEXACT,
612 &oggstream->header_len[1], &st->metadata,
613 framing_bit, NULL, 0);
614 7 oggstream->header[1] = p;
615
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 7 if (!p)
616 ✗ return AVERROR(ENOMEM);
617
618 7 bytestream_put_byte(&p, header_type);
619 7 bytestream_put_buffer(&p, cstr, 6);
620
621
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 7 if (st->codecpar->codec_id == AV_CODEC_ID_THEORA) {
622 1 int den = AV_RB32(oggstream->header[0] + 22), num = AV_RB32(oggstream->header[0] + 26);
623 /* Make sure to use time base stored in the Theora stream header to write
624 correct timestamps */
625
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 1 if (st->time_base.num != num || st->time_base.den != den) {
626 1 av_log(s, AV_LOG_DEBUG, "Changing time base from %d/%d to %d/%d\n",
627 st->time_base.num, st->time_base.den, num, den);
628 1 avpriv_set_pts_info(st, 64, num, den);
629 }
630 /** KFGSHIFT is the width of the less significant section of the granule position
631 The less significant section is the frame count since the last keyframe */
632 1 oggstream->kfgshift = ((oggstream->header[0][40]&3)<<3)|(oggstream->header[0][41]>>5);
633 1 oggstream->vrev = oggstream->header[0][9];
634 1 av_log(s, AV_LOG_DEBUG, "theora kfgshift %d, vrev %d\n",
635 oggstream->kfgshift, oggstream->vrev);
636 }
637 }
638
639
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 17 if (s->flags & AVFMT_FLAG_BITEXACT && ogg->serial_offset >= 0)
640 2 serial_num = i + ogg->serial_offset;
641
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 15 else if (s->flags & AVFMT_FLAG_BITEXACT)
642 8 serial_num = ogg_bitexact_serial(oggstream, i);
643 else
644 7 serial_num = av_get_random_seed();
645
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 17 while (ogg_serial_in_use(s, i, serial_num))
646 ✗ serial_num = s->flags & AVFMT_FLAG_BITEXACT ? serial_num + 1
647 ✗ : av_get_random_seed();
648 17 oggstream->serial_num = serial_num;
649 }
650
651 16 return 0;
652 }
653
654 16 static int ogg_write_header(AVFormatContext *s)
655 {
656 16 OGGStreamContext *oggstream = NULL;
657 int i, j;
658
659
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 33 for (j = 0; j < s->nb_streams; j++) {
660 17 oggstream = s->streams[j]->priv_data;
661 17 ogg_buffer_data(s, s->streams[j], oggstream->header[0],
662 17 oggstream->header_len[0], 0, 1);
663 17 oggstream->page.flags |= 2; // bos
664 17 ogg_buffer_page(s, oggstream);
665 }
666
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 33 for (j = 0; j < s->nb_streams; j++) {
667 17 AVStream *st = s->streams[j];
668 17 oggstream = st->priv_data;
669
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 51 for (i = 1; i < 3; i++) {
670
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 34 if (oggstream->header_len[i])
671 24 ogg_buffer_data(s, st, oggstream->header[i],
672 24 oggstream->header_len[i], 0, 1);
673 }
674 17 ogg_buffer_page(s, oggstream);
675 }
676
677 16 oggstream->page.start_granule = AV_NOPTS_VALUE;
678
679 16 ogg_write_pages(s, 2);
680
681 16 return 0;
682 }
683
684 1093 static int ogg_check_new_metadata(AVFormatContext *s, AVPacket *pkt)
685 {
686 1093 int ret = 0;
687 size_t size;
688 1093 OGGContext *oggcontext = s->priv_data;
689 1093 AVStream *st = s->streams[pkt->stream_index];
690 1093 OGGStreamContext *oggstream = st->priv_data;
691 1093 const uint8_t *side_metadata = av_packet_get_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA, &size);
692
693
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 1093 if (!side_metadata)
694 1087 return 0;
695
696 // Don't restart on first packet.
697
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 6 if (!oggstream->packet_seen)
698 1 return 0;
699
700
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 5 if (s->nb_streams > 1) {
701 ✗ av_log(s, AV_LOG_WARNING, "Multiple streams present: cannot insert new metadata!\n");
702 ✗ return 0;
703 }
704
705
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 5 if (st->codecpar->codec_id != AV_CODEC_ID_VORBIS &&
706
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 4 st->codecpar->codec_id != AV_CODEC_ID_FLAC &&
707
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 1 st->codecpar->codec_id != AV_CODEC_ID_OPUS) {
708 ✗ av_log(s, AV_LOG_WARNING, "Inserting metadata is only supported for vorbis, flac and opus streams!\n");
709 ✗ return 0;
710 }
711
712 5 ret = ogg_write_trailer(s);
713
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 5 if (ret < 0)
714 ✗ goto end;
715
716 5 av_dict_free(&st->metadata);
717 5 ret = av_packet_unpack_dictionary(side_metadata, size, &st->metadata);
718
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 5 if (ret < 0)
719 ✗ goto end;
720
721 5 ret = ogg_init(s);
722
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 5 if (ret < 0)
723 ✗ goto end;
724
725 5 ret = ogg_write_header(s);
726
727 5 end:
728 5 oggcontext->failed = ret < 0;
729 5 return ret;
730 }
731
732 1093 static int ogg_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
733 {
734 1093 AVStream *st = s->streams[pkt->stream_index];
735 1093 OGGContext *oggcontext = s->priv_data;
736 1093 OGGStreamContext *oggstream = st->priv_data;
737 int ret;
738 int64_t granule;
739
740
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 1093 if (oggcontext->failed)
741 ✗ return AVERROR_INVALIDDATA;
742
743 1093 ret = ogg_check_new_metadata(s, pkt);
744
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 1093 if (ret < 0)
745 ✗ return ret;
746
747
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 1093 if (st->codecpar->codec_id == AV_CODEC_ID_THEORA) {
748
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 8 int64_t pts = oggstream->vrev < 1 ? pkt->pts : pkt->pts + pkt->duration;
749 int pframe_count;
750
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 8 if (pkt->flags & AV_PKT_FLAG_KEY)
751 1 oggstream->last_kf_pts = pts;
752 8 pframe_count = pts - oggstream->last_kf_pts;
753 // prevent frame count from overflow if key frame flag is not set
754
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 8 if (pframe_count >= (1<<oggstream->kfgshift)) {
755 ✗ oggstream->last_kf_pts += pframe_count;
756 ✗ pframe_count = 0;
757 }
758 8 granule = (oggstream->last_kf_pts<<oggstream->kfgshift) | pframe_count;
759
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 1085 } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS)
760 12 granule = pkt->pts + pkt->duration +
761 12 av_rescale_q(st->codecpar->initial_padding,
762 12 (AVRational){ 1, st->codecpar->sample_rate },
763 st->time_base);
764
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 1073 else if (st->codecpar->codec_id == AV_CODEC_ID_VP8) {
765 int64_t pts, invcnt, dist;
766 int visible;
767
768 111 visible = (pkt->data[0] >> 4) & 1;
769 111 pts = pkt->pts + pkt->duration;
770 111 invcnt = (oggstream->last_granule >> 30) & 3;
771
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 111 invcnt = visible ? 3 : (invcnt == 3 ? 0 : invcnt + 1);
772
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 111 dist = (pkt->flags & AV_PKT_FLAG_KEY) ? 0 : ((oggstream->last_granule >> 3) & 0x07ffffff) + 1;
773
774 111 granule = (pts << 32) | (invcnt << 30) | (dist << 3);
775 } else
776 962 granule = pkt->pts + pkt->duration;
777
778
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 1093 if (oggstream->page.start_granule == AV_NOPTS_VALUE)
779 16 oggstream->page.start_granule = pkt->pts;
780
781 1093 ret = ogg_buffer_data(s, st, pkt->data, pkt->size, granule, 0);
782
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 1093 if (ret < 0)
783 ✗ return ret;
784
785 1093 ogg_write_pages(s, 0);
786
787 1093 oggstream->last_granule = granule;
788 1093 oggstream->packet_seen = 1;
789
790 1093 return 0;
791 }
792
793 1094 static int ogg_write_packet(AVFormatContext *s, AVPacket *pkt)
794 {
795 int i;
796
797
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 1094 if (pkt)
798
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 1094 return pkt->size || !pkt->side_data_elems ? ogg_write_packet_internal(s, pkt) : 0;
799
800 ✗ for (i = 0; i < s->nb_streams; i++) {
801 ✗ OGGStreamContext *oggstream = s->streams[i]->priv_data;
802 ✗ if (oggstream->page.segments_count)
803 ✗ ogg_buffer_page(s, oggstream);
804 }
805
806 ✗ ogg_write_pages(s, 2);
807 ✗ return 1;
808 }
809
810 16 static int ogg_write_trailer(AVFormatContext *s)
811 {
812 int i;
813
814 /* flush current page if needed */
815
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 33 for (i = 0; i < s->nb_streams; i++) {
816 17 OGGStreamContext *oggstream = s->streams[i]->priv_data;
817
818
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 17 if (oggstream->page.segments_count)
819 16 ogg_buffer_page(s, oggstream);
820 }
821
822 16 ogg_write_pages(s, 1);
823
824 16 return 0;
825 }
826
827 11 static void ogg_free(AVFormatContext *s)
828 {
829 11 OGGContext *ogg = s->priv_data;
830 11 OGGPageList *p = ogg->page_list;
831 int i;
832
833
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 23 for (i = 0; i < s->nb_streams; i++) {
834 12 AVStream *st = s->streams[i];
835
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 12 if (st->priv_data)
836 12 ogg_cleanup_stream(st);
837 }
838
839
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 11 while (p) {
840 ✗ OGGPageList *next = p->next;
841 ✗ av_free(p);
842 ✗ p = next;
843 }
844 11 ogg->page_list = NULL;
845 11 }
846
847 #if CONFIG_OGG_MUXER
848 const FFOutputFormat ff_ogg_muxer = {
849 .p.name = "ogg",
850 .p.long_name = NULL_IF_CONFIG_SMALL("Ogg"),
851 .p.mime_type = "application/ogg",
852 .p.extensions = "ogg"
853 #if !CONFIG_OGV_MUXER
854 ",ogv"
855 #endif
856 #if !CONFIG_SPX_MUXER
857 ",spx"
858 #endif
859 #if !CONFIG_OPUS_MUXER
860 ",opus"
861 #endif
862 ,
863 .priv_data_size = sizeof(OGGContext),
864 .p.audio_codec = CONFIG_LIBVORBIS_ENCODER ?
865 AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
866 .p.video_codec = AV_CODEC_ID_THEORA,
867 .init = ogg_init,
868 .write_header = ogg_write_header,
869 .write_packet = ogg_write_packet,
870 .write_trailer = ogg_write_trailer,
871 .deinit = ogg_free,
872 .p.flags = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT,
873 .p.priv_class = &ogg_muxer_class,
874 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
875 };
876 #endif
877
878 #if CONFIG_OGA_MUXER
879 const FFOutputFormat ff_oga_muxer = {
880 .p.name = "oga",
881 .p.long_name = NULL_IF_CONFIG_SMALL("Ogg Audio"),
882 .p.mime_type = "audio/ogg",
883 .p.extensions = "oga",
884 .priv_data_size = sizeof(OGGContext),
885 .p.audio_codec = AV_CODEC_ID_FLAC,
886 .init = ogg_init,
887 .write_header = ogg_write_header,
888 .write_packet = ogg_write_packet,
889 .write_trailer = ogg_write_trailer,
890 .deinit = ogg_free,
891 .p.flags = AVFMT_TS_NEGATIVE,
892 .p.priv_class = &ogg_muxer_class,
893 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
894 };
895 #endif
896
897 #if CONFIG_OGV_MUXER
898 const FFOutputFormat ff_ogv_muxer = {
899 .p.name = "ogv",
900 .p.long_name = NULL_IF_CONFIG_SMALL("Ogg Video"),
901 .p.mime_type = "video/ogg",
902 .p.extensions = "ogv",
903 .priv_data_size = sizeof(OGGContext),
904 .p.audio_codec = CONFIG_LIBVORBIS_ENCODER ?
905 AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
906 .p.video_codec = CONFIG_LIBTHEORA_ENCODER ?
907 AV_CODEC_ID_THEORA : AV_CODEC_ID_VP8,
908 .init = ogg_init,
909 .write_header = ogg_write_header,
910 .write_packet = ogg_write_packet,
911 .write_trailer = ogg_write_trailer,
912 .deinit = ogg_free,
913 .p.flags = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT,
914 .p.priv_class = &ogg_muxer_class,
915 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
916 };
917 #endif
918
919 #if CONFIG_SPX_MUXER
920 const FFOutputFormat ff_spx_muxer = {
921 .p.name = "spx",
922 .p.long_name = NULL_IF_CONFIG_SMALL("Ogg Speex"),
923 .p.mime_type = "audio/ogg",
924 .p.extensions = "spx",
925 .priv_data_size = sizeof(OGGContext),
926 .p.audio_codec = AV_CODEC_ID_SPEEX,
927 .init = ogg_init,
928 .write_header = ogg_write_header,
929 .write_packet = ogg_write_packet,
930 .write_trailer = ogg_write_trailer,
931 .deinit = ogg_free,
932 .p.flags = AVFMT_TS_NEGATIVE,
933 .p.priv_class = &ogg_muxer_class,
934 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
935 };
936 #endif
937
938 #if CONFIG_OPUS_MUXER
939 const FFOutputFormat ff_opus_muxer = {
940 .p.name = "opus",
941 .p.long_name = NULL_IF_CONFIG_SMALL("Ogg Opus"),
942 .p.mime_type = "audio/ogg",
943 .p.extensions = "opus",
944 .priv_data_size = sizeof(OGGContext),
945 .p.audio_codec = AV_CODEC_ID_OPUS,
946 .init = ogg_init,
947 .write_header = ogg_write_header,
948 .write_packet = ogg_write_packet,
949 .write_trailer = ogg_write_trailer,
950 .deinit = ogg_free,
951 .p.flags = AVFMT_TS_NEGATIVE,
952 .p.priv_class = &ogg_muxer_class,
953 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
954 };
955 #endif
956