FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/oggenc.c
Date: 2026-07-21 08:37:06
Exec Total Coverage
Lines: 373 446 83.6%
Functions: 20 21 95.2%
Branches: 191 260 73.5%
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",
92 OFFSET(serial_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 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 13 static void ogg_cleanup_stream(AVStream *st)
106 {
107 13 OGGStreamContext *oggstream = st->priv_data;
108
109
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 13 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 6 av_freep(&oggstream->header[0]);
114 }
115
116 13 av_freep(&oggstream->header[1]);
117 13 }
118
119 65 static void ogg_write_page(AVFormatContext *s, OGGPage *page, int extra_flags)
120 {
121 65 OGGStreamContext *oggstream = s->streams[page->stream_index]->priv_data;
122 65 uint8_t buf[4 + 1 + 1 + 8 + 4 + 4 + 4 + 1 + 255], *ptr = buf, *crc_pos;
123 65 const AVCRC *crc_table = av_crc_get_table(AV_CRC_32_IEEE);
124 uint32_t crc;
125
126 65 bytestream_put_le32(&ptr, MKTAG('O', 'g', 'g', 'S'));
127 65 bytestream_put_byte(&ptr, 0);
128 65 bytestream_put_byte(&ptr, page->flags | extra_flags);
129 65 bytestream_put_le64(&ptr, page->granule);
130 65 bytestream_put_le32(&ptr, oggstream->serial_num);
131 65 bytestream_put_le32(&ptr, oggstream->page_counter++);
132 65 crc_pos = ptr;
133 65 bytestream_put_le32(&ptr, 0);
134 65 bytestream_put_byte(&ptr, page->segments_count);
135 65 bytestream_put_buffer(&ptr, page->segments, page->segments_count);
136
137 65 crc = av_crc(crc_table, 0, buf, ptr - buf);
138 65 crc = av_crc(crc_table, crc, page->data, page->size);
139 65 bytestream_put_be32(&crc_pos, crc);
140
141 65 avio_write(s->pb, buf, ptr - buf);
142 65 avio_write(s->pb, page->data, page->size);
143 65 avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_FLUSH_POINT);
144 65 oggstream->page_count--;
145 65 }
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 1528 static int64_t ogg_granule_to_timestamp(OGGStreamContext *oggstream, int64_t granule)
154 {
155
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 1528 if (oggstream->kfgshift)
156 45 return (granule>>oggstream->kfgshift) +
157 45 (granule & ((1<<oggstream->kfgshift)-1));
158
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 1483 else if (oggstream->isvp8)
159 372 return granule >> 32;
160 else
161 1111 return granule;
162 }
163
164 66 static int ogg_compare_granule(AVFormatContext *s, OGGPage *next, OGGPage *page)
165 {
166 66 AVStream *st2 = s->streams[next->stream_index];
167 66 AVStream *st = s->streams[page->stream_index];
168 int64_t next_granule, cur_granule;
169
170
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 66 if (next->granule == -1 || page->granule == -1)
171 15 return 0;
172
173 102 next_granule = av_rescale_q(ogg_granule_to_timestamp(st2->priv_data, next->granule),
174 51 st2->time_base, AV_TIME_BASE_Q);
175 102 cur_granule = av_rescale_q(ogg_granule_to_timestamp(st->priv_data, page->granule),
176 51 st ->time_base, AV_TIME_BASE_Q);
177 51 return next_granule > cur_granule;
178 }
179
180 65 static int ogg_reset_cur_page(OGGStreamContext *oggstream)
181 {
182 65 oggstream->page.granule = -1;
183 65 oggstream->page.flags = 0;
184 65 oggstream->page.segments_count = 0;
185 65 oggstream->page.size = 0;
186 65 return 0;
187 }
188
189 65 static int ogg_buffer_page(AVFormatContext *s, OGGStreamContext *oggstream)
190 {
191 65 OGGContext *ogg = s->priv_data;
192 65 OGGPageList **p = &ogg->page_list;
193 65 OGGPageList *l = av_mallocz(sizeof(*l));
194
195
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 65 if (!l)
196 ✗ return AVERROR(ENOMEM);
197 65 l->page = oggstream->page;
198
199 65 oggstream->page.start_granule = ogg_granule_to_timestamp(oggstream, oggstream->page.granule);
200 65 oggstream->page_count++;
201 65 ogg_reset_cur_page(oggstream);
202
203
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 128 while (*p) {
204
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 66 if (ogg_compare_granule(s, &(*p)->page, &l->page))
205 3 break;
206 63 p = &(*p)->next;
207 }
208 65 l->next = *p;
209 65 *p = l;
210
211 65 return 0;
212 }
213
214 1118 static int ogg_buffer_data(AVFormatContext *s, AVStream *st,
215 const uint8_t *data, unsigned size, int64_t granule,
216 int header)
217 {
218 1118 OGGStreamContext *oggstream = st->priv_data;
219 1118 OGGContext *ogg = s->priv_data;
220 1118 int total_segments = size / 255 + 1;
221 1118 const uint8_t *p = data;
222 1118 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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 1118 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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 1118 if (!header && oggstream->page.size > 0 &&
240
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 1051 MAX_PAGE_SIZE - oggstream->page.size < size) {
241 ✗ ogg_buffer_page(s, oggstream);
242 }
243
244
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 2241 for (i = 0; i < total_segments; ) {
245 1123 OGGPage *page = &oggstream->page;
246
247 1123 segments = FFMIN(total_segments - i, 255 - page->segments_count);
248
249
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 1123 if (i && !page->segments_count)
250 5 page->flags |= 1; // continued packet
251
252 1123 memset(page->segments+page->segments_count, 255, segments - 1);
253 1123 page->segments_count += segments - 1;
254
255 1123 len = FFMIN(size, segments*255);
256 1123 page->segments[page->segments_count++] = len - (segments-1)*255;
257
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 1123 if (len)
258 1123 memcpy(page->data+page->size, p, len);
259 1123 p += len;
260 1123 size -= len;
261 1123 i += segments;
262 1123 page->size += len;
263
264
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 1123 if (i == total_segments)
265 1118 page->granule = granule;
266
267 {
268 1123 AVRational time_base = s->streams[page->stream_index]->time_base;
269
270 1123 int64_t start = av_rescale_q(page->start_granule, time_base,
271 1123 AV_TIME_BASE_Q);
272 2246 int64_t next = av_rescale_q(ogg_granule_to_timestamp(oggstream, page->granule),
273 1123 time_base, AV_TIME_BASE_Q);
274
275
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 1123 if (page->segments_count == 255) {
276 5 ogg_buffer_page(s, oggstream);
277
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 1118 } else if (!header) {
278
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 1085 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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 1118 if (flush && oggstream->page.granule != -1)
286 2 ogg_buffer_page(s, oggstream);
287
288 1118 return 0;
289 }
290
291 13 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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 13 const char *vendor = bitexact ? "ffmpeg" : LIBAVFORMAT_IDENT;
296 FFIOContext pb;
297 int64_t size;
298 uint8_t *p;
299
300 13 ff_metadata_conv(m, ff_vorbiscomment_metadata_conv, NULL);
301
302 13 size = ff_vorbiscomment_length(*m, vendor, chapters, nb_chapters);
303
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 13 if (size < 0)
304 ✗ return NULL;
305 13 size += offset + framing_bit;
306
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 13 if (size > INT_MAX)
307 ✗ return NULL;
308 13 p = av_mallocz(size);
309
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 13 if (!p)
310 ✗ return NULL;
311
312 13 ffio_init_write_context(&pb, p + offset, size - offset);
313 13 ff_vorbiscomment_write(&pb.pub, *m, vendor, chapters, nb_chapters);
314
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 13 if (framing_bit)
315 6 avio_w8(&pb.pub, 1);
316
317 13 *header_len = size;
318 13 return p;
319 }
320
321 3 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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 3 if (par->extradata_size < FLAC_STREAMINFO_SIZE)
328 ✗ return AVERROR(EINVAL);
329
330 // first packet: STREAMINFO
331 3 oggstream->header_len[0] = 51;
332 3 oggstream->header[0] = av_mallocz(51); // per ogg flac specs
333 3 p = oggstream->header[0];
334
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 3 if (!p)
335 ✗ return AVERROR(ENOMEM);
336 3 bytestream_put_byte(&p, 0x7F);
337 3 bytestream_put_buffer(&p, "FLAC", 4);
338 3 bytestream_put_byte(&p, 1); // major version
339 3 bytestream_put_byte(&p, 0); // minor version
340 3 bytestream_put_be16(&p, 1); // headers packets without this one
341 3 bytestream_put_buffer(&p, "fLaC", 4);
342 3 bytestream_put_byte(&p, 0x00); // streaminfo
343 3 bytestream_put_be24(&p, 34);
344 3 bytestream_put_buffer(&p, par->extradata, FLAC_STREAMINFO_SIZE);
345
346 // second packet: VorbisComment
347 3 p = ogg_write_vorbiscomment(4, bitexact, &oggstream->header_len[1], m, 0, NULL, 0);
348
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 3 if (!p)
349 ✗ return AVERROR(ENOMEM);
350 3 oggstream->header[1] = p;
351 3 bytestream_put_byte(&p, 0x84); // last metadata block and vorbis comment
352 3 bytestream_put_be24(&p, oggstream->header_len[1] - 4);
353
354 3 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 1109 static void ogg_write_pages(AVFormatContext *s, int flush)
468 {
469 1109 OGGContext *ogg = s->priv_data;
470 OGGPageList *next, *p;
471
472
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 1109 if (!ogg->page_list)
473 189 return;
474
475
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 985 for (p = ogg->page_list; p; ) {
476 961 OGGStreamContext *oggstream =
477 961 s->streams[p->page.stream_index]->priv_data;
478
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 961 if (oggstream->page_count < 2 && !flush)
479 896 break;
480
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 84 ogg_write_page(s, &p->page,
481
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 19 flush == 1 && oggstream->page_count == 1 ? 4 : 0); // eos
482 65 next = p->next;
483 65 av_freep(&p);
484 65 p = next;
485 }
486 920 ogg->page_list = p;
487 }
488
489 // This function can be used on an initialized context to reinitialize the
490 // streams.
491 12 static int ogg_init(AVFormatContext *s)
492 {
493 12 OGGContext *ogg = s->priv_data;
494 12 OGGStreamContext *oggstream = NULL;
495 int i, j;
496
497
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 25 for (i = 0; i < s->nb_streams; i++) {
498 13 AVStream *st = s->streams[i];
499 13 unsigned serial_num = i + ogg->serial_offset;
500
501
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 13 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
502
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 11 if (st->codecpar->codec_id == AV_CODEC_ID_OPUS)
503 /* Opus requires a fixed 48kHz clock */
504 2 avpriv_set_pts_info(st, 64, 1, 48000);
505 else
506 9 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
507 }
508
509
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 13 if (st->codecpar->codec_id != AV_CODEC_ID_VORBIS &&
510
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 7 st->codecpar->codec_id != AV_CODEC_ID_THEORA &&
511
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 6 st->codecpar->codec_id != AV_CODEC_ID_SPEEX &&
512
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 6 st->codecpar->codec_id != AV_CODEC_ID_FLAC &&
513
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 3 st->codecpar->codec_id != AV_CODEC_ID_OPUS &&
514
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 1 st->codecpar->codec_id != AV_CODEC_ID_VP8) {
515 ✗ av_log(s, AV_LOG_ERROR, "Unsupported codec id in stream %d\n", i);
516 ✗ return AVERROR(EINVAL);
517 }
518
519
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 13 if ((!st->codecpar->extradata || !st->codecpar->extradata_size) &&
520
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 1 st->codecpar->codec_id != AV_CODEC_ID_VP8) {
521 ✗ av_log(s, AV_LOG_ERROR, "No extradata present\n");
522 ✗ return AVERROR_INVALIDDATA;
523 }
524 13 oggstream = st->priv_data;
525
526
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 13 if (!oggstream) {
527 10 oggstream = av_mallocz(sizeof(*oggstream));
528
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 10 if (!oggstream)
529 ✗ return AVERROR(ENOMEM);
530 10 st->priv_data = oggstream;
531 } else {
532 3 ogg_cleanup_stream(st);
533 3 memset(oggstream, 0, sizeof(*oggstream));
534 }
535
536 13 oggstream->page.stream_index = i;
537
538
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 13 if (!(s->flags & AVFMT_FLAG_BITEXACT))
539 do {
540 7 serial_num = av_get_random_seed();
541
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 7 for (j = 0; j < i; j++) {
542 ✗ OGGStreamContext *sc = s->streams[j]->priv_data;
543 ✗ if (serial_num == sc->serial_num)
544 ✗ break;
545 }
546
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 7 } while (j < i);
547 13 oggstream->serial_num = serial_num;
548
549 13 av_dict_copy(&st->metadata, s->metadata, AV_DICT_DONT_OVERWRITE);
550
551
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 13 if (st->codecpar->codec_id == AV_CODEC_ID_FLAC) {
552 3 int err = ogg_build_flac_headers(st->codecpar, oggstream,
553 3 s->flags & AVFMT_FLAG_BITEXACT,
554 &st->metadata);
555
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 3 if (err) {
556 ✗ av_log(s, AV_LOG_ERROR, "Error writing FLAC headers\n");
557 ✗ return err;
558 }
559
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 10 } else if (st->codecpar->codec_id == AV_CODEC_ID_SPEEX) {
560 ✗ int err = ogg_build_speex_headers(st->codecpar, oggstream,
561 ✗ s->flags & AVFMT_FLAG_BITEXACT,
562 &st->metadata);
563 ✗ if (err) {
564 ✗ av_log(s, AV_LOG_ERROR, "Error writing Speex headers\n");
565 ✗ return err;
566 }
567
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 10 } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
568 2 int err = ogg_build_opus_headers(st->codecpar, oggstream,
569 2 s->flags & AVFMT_FLAG_BITEXACT,
570 &st->metadata, s->chapters, s->nb_chapters);
571
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 2 if (err) {
572 ✗ av_log(s, AV_LOG_ERROR, "Error writing Opus headers\n");
573 ✗ return err;
574 }
575
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 8 } else if (st->codecpar->codec_id == AV_CODEC_ID_VP8) {
576 1 int err = ogg_build_vp8_headers(s, st, oggstream,
577 1 s->flags & AVFMT_FLAG_BITEXACT);
578
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 1 if (err) {
579 ✗ av_log(s, AV_LOG_ERROR, "Error writing VP8 headers\n");
580 ✗ return err;
581 }
582 } else {
583 uint8_t *p;
584
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 7 const char *cstr = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? "vorbis" : "theora";
585
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 7 int header_type = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 3 : 0x81;
586 7 int framing_bit = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 1 : 0;
587
588
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 7 if (avpriv_split_xiph_headers(st->codecpar->extradata, st->codecpar->extradata_size,
589 7 st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 30 : 42,
590
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 7 (const uint8_t**)oggstream->header, oggstream->header_len) < 0) {
591 ✗ av_log(s, AV_LOG_ERROR, "Extradata corrupted\n");
592 ✗ oggstream->header[1] = NULL;
593 ✗ return AVERROR_INVALIDDATA;
594 }
595
596 7 p = ogg_write_vorbiscomment(7, s->flags & AVFMT_FLAG_BITEXACT,
597 &oggstream->header_len[1], &st->metadata,
598 framing_bit, NULL, 0);
599 7 oggstream->header[1] = p;
600
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 7 if (!p)
601 ✗ return AVERROR(ENOMEM);
602
603 7 bytestream_put_byte(&p, header_type);
604 7 bytestream_put_buffer(&p, cstr, 6);
605
606
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 7 if (st->codecpar->codec_id == AV_CODEC_ID_THEORA) {
607 1 int den = AV_RB32(oggstream->header[0] + 22), num = AV_RB32(oggstream->header[0] + 26);
608 /* Make sure to use time base stored in the Theora stream header to write
609 correct timestamps */
610
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 1 if (st->time_base.num != num || st->time_base.den != den) {
611 1 av_log(s, AV_LOG_DEBUG, "Changing time base from %d/%d to %d/%d\n",
612 st->time_base.num, st->time_base.den, num, den);
613 1 avpriv_set_pts_info(st, 64, num, den);
614 }
615 /** KFGSHIFT is the width of the less significant section of the granule position
616 The less significant section is the frame count since the last keyframe */
617 1 oggstream->kfgshift = ((oggstream->header[0][40]&3)<<3)|(oggstream->header[0][41]>>5);
618 1 oggstream->vrev = oggstream->header[0][9];
619 1 av_log(s, AV_LOG_DEBUG, "theora kfgshift %d, vrev %d\n",
620 oggstream->kfgshift, oggstream->vrev);
621 }
622 }
623 }
624
625 12 return 0;
626 }
627
628 12 static int ogg_write_header(AVFormatContext *s)
629 {
630 12 OGGStreamContext *oggstream = NULL;
631 int i, j;
632
633
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 25 for (j = 0; j < s->nb_streams; j++) {
634 13 oggstream = s->streams[j]->priv_data;
635 13 ogg_buffer_data(s, s->streams[j], oggstream->header[0],
636 13 oggstream->header_len[0], 0, 1);
637 13 oggstream->page.flags |= 2; // bos
638 13 ogg_buffer_page(s, oggstream);
639 }
640
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 25 for (j = 0; j < s->nb_streams; j++) {
641 13 AVStream *st = s->streams[j];
642 13 oggstream = st->priv_data;
643
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 39 for (i = 1; i < 3; i++) {
644
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 26 if (oggstream->header_len[i])
645 20 ogg_buffer_data(s, st, oggstream->header[i],
646 20 oggstream->header_len[i], 0, 1);
647 }
648 13 ogg_buffer_page(s, oggstream);
649 }
650
651 12 oggstream->page.start_granule = AV_NOPTS_VALUE;
652
653 12 ogg_write_pages(s, 2);
654
655 12 return 0;
656 }
657
658 1085 static int ogg_check_new_metadata(AVFormatContext *s, AVPacket *pkt)
659 {
660 1085 int ret = 0;
661 size_t size;
662 1085 OGGContext *oggcontext = s->priv_data;
663 1085 AVStream *st = s->streams[pkt->stream_index];
664 1085 OGGStreamContext *oggstream = st->priv_data;
665 1085 const uint8_t *side_metadata = av_packet_get_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA, &size);
666
667
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 1085 if (!side_metadata)
668 1081 return 0;
669
670 // Don't restart on first packet.
671
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 4 if (!oggstream->packet_seen)
672 1 return 0;
673
674
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 3 if (s->nb_streams > 1) {
675 ✗ av_log(s, AV_LOG_WARNING, "Multiple streams present: cannot insert new metadata!\n");
676 ✗ return 0;
677 }
678
679
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 3 if (st->codecpar->codec_id != AV_CODEC_ID_VORBIS &&
680
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 2 st->codecpar->codec_id != AV_CODEC_ID_FLAC &&
681
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 1 st->codecpar->codec_id != AV_CODEC_ID_OPUS) {
682 ✗ av_log(s, AV_LOG_WARNING, "Inserting metadata is only supported for vorbis, flac and opus streams!\n");
683 ✗ return 0;
684 }
685
686 3 ret = ogg_write_trailer(s);
687
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 3 if (ret < 0)
688 ✗ goto end;
689
690 3 av_dict_free(&st->metadata);
691 3 ret = av_packet_unpack_dictionary(side_metadata, size, &st->metadata);
692
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 3 if (ret < 0)
693 ✗ goto end;
694
695 3 ret = ogg_init(s);
696
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 3 if (ret < 0)
697 ✗ goto end;
698
699 3 ret = ogg_write_header(s);
700
701 3 end:
702 3 oggcontext->failed = ret < 0;
703 3 return ret;
704 }
705
706 1085 static int ogg_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
707 {
708 1085 AVStream *st = s->streams[pkt->stream_index];
709 1085 OGGContext *oggcontext = s->priv_data;
710 1085 OGGStreamContext *oggstream = st->priv_data;
711 int ret;
712 int64_t granule;
713
714
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 1085 if (oggcontext->failed)
715 ✗ return AVERROR_INVALIDDATA;
716
717 1085 ret = ogg_check_new_metadata(s, pkt);
718
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 1085 if (ret < 0)
719 ✗ return ret;
720
721
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 1085 if (st->codecpar->codec_id == AV_CODEC_ID_THEORA) {
722
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 8 int64_t pts = oggstream->vrev < 1 ? pkt->pts : pkt->pts + pkt->duration;
723 int pframe_count;
724
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 8 if (pkt->flags & AV_PKT_FLAG_KEY)
725 1 oggstream->last_kf_pts = pts;
726 8 pframe_count = pts - oggstream->last_kf_pts;
727 // prevent frame count from overflow if key frame flag is not set
728
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 8 if (pframe_count >= (1<<oggstream->kfgshift)) {
729 ✗ oggstream->last_kf_pts += pframe_count;
730 ✗ pframe_count = 0;
731 }
732 8 granule = (oggstream->last_kf_pts<<oggstream->kfgshift) | pframe_count;
733
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 1077 } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS)
734 12 granule = pkt->pts + pkt->duration +
735 12 av_rescale_q(st->codecpar->initial_padding,
736 12 (AVRational){ 1, st->codecpar->sample_rate },
737 st->time_base);
738
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 1065 else if (st->codecpar->codec_id == AV_CODEC_ID_VP8) {
739 int64_t pts, invcnt, dist;
740 int visible;
741
742 111 visible = (pkt->data[0] >> 4) & 1;
743 111 pts = pkt->pts + pkt->duration;
744 111 invcnt = (oggstream->last_granule >> 30) & 3;
745
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 111 invcnt = visible ? 3 : (invcnt == 3 ? 0 : invcnt + 1);
746
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 111 dist = (pkt->flags & AV_PKT_FLAG_KEY) ? 0 : ((oggstream->last_granule >> 3) & 0x07ffffff) + 1;
747
748 111 granule = (pts << 32) | (invcnt << 30) | (dist << 3);
749 } else
750 954 granule = pkt->pts + pkt->duration;
751
752
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 1085 if (oggstream->page.start_granule == AV_NOPTS_VALUE)
753 12 oggstream->page.start_granule = pkt->pts;
754
755 1085 ret = ogg_buffer_data(s, st, pkt->data, pkt->size, granule, 0);
756
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 1085 if (ret < 0)
757 ✗ return ret;
758
759 1085 ogg_write_pages(s, 0);
760
761 1085 oggstream->last_granule = granule;
762 1085 oggstream->packet_seen = 1;
763
764 1085 return 0;
765 }
766
767 1086 static int ogg_write_packet(AVFormatContext *s, AVPacket *pkt)
768 {
769 int i;
770
771
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 1086 if (pkt)
772
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 1086 return pkt->size || !pkt->side_data_elems ? ogg_write_packet_internal(s, pkt) : 0;
773
774 ✗ for (i = 0; i < s->nb_streams; i++) {
775 ✗ OGGStreamContext *oggstream = s->streams[i]->priv_data;
776 ✗ if (oggstream->page.segments_count)
777 ✗ ogg_buffer_page(s, oggstream);
778 }
779
780 ✗ ogg_write_pages(s, 2);
781 ✗ return 1;
782 }
783
784 12 static int ogg_write_trailer(AVFormatContext *s)
785 {
786 int i;
787
788 /* flush current page if needed */
789
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 25 for (i = 0; i < s->nb_streams; i++) {
790 13 OGGStreamContext *oggstream = s->streams[i]->priv_data;
791
792
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 13 if (oggstream->page.segments_count)
793 12 ogg_buffer_page(s, oggstream);
794 }
795
796 12 ogg_write_pages(s, 1);
797
798 12 return 0;
799 }
800
801 9 static void ogg_free(AVFormatContext *s)
802 {
803 9 OGGContext *ogg = s->priv_data;
804 9 OGGPageList *p = ogg->page_list;
805 int i;
806
807
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 19 for (i = 0; i < s->nb_streams; i++) {
808 10 AVStream *st = s->streams[i];
809
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 10 if (st->priv_data)
810 10 ogg_cleanup_stream(st);
811 }
812
813
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 9 while (p) {
814 ✗ OGGPageList *next = p->next;
815 ✗ av_free(p);
816 ✗ p = next;
817 }
818 9 ogg->page_list = NULL;
819 9 }
820
821 #if CONFIG_OGG_MUXER
822 const FFOutputFormat ff_ogg_muxer = {
823 .p.name = "ogg",
824 .p.long_name = NULL_IF_CONFIG_SMALL("Ogg"),
825 .p.mime_type = "application/ogg",
826 .p.extensions = "ogg"
827 #if !CONFIG_OGV_MUXER
828 ",ogv"
829 #endif
830 #if !CONFIG_SPX_MUXER
831 ",spx"
832 #endif
833 #if !CONFIG_OPUS_MUXER
834 ",opus"
835 #endif
836 ,
837 .priv_data_size = sizeof(OGGContext),
838 .p.audio_codec = CONFIG_LIBVORBIS_ENCODER ?
839 AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
840 .p.video_codec = AV_CODEC_ID_THEORA,
841 .init = ogg_init,
842 .write_header = ogg_write_header,
843 .write_packet = ogg_write_packet,
844 .write_trailer = ogg_write_trailer,
845 .deinit = ogg_free,
846 .p.flags = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT,
847 .p.priv_class = &ogg_muxer_class,
848 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
849 };
850 #endif
851
852 #if CONFIG_OGA_MUXER
853 const FFOutputFormat ff_oga_muxer = {
854 .p.name = "oga",
855 .p.long_name = NULL_IF_CONFIG_SMALL("Ogg Audio"),
856 .p.mime_type = "audio/ogg",
857 .p.extensions = "oga",
858 .priv_data_size = sizeof(OGGContext),
859 .p.audio_codec = AV_CODEC_ID_FLAC,
860 .init = ogg_init,
861 .write_header = ogg_write_header,
862 .write_packet = ogg_write_packet,
863 .write_trailer = ogg_write_trailer,
864 .deinit = ogg_free,
865 .p.flags = AVFMT_TS_NEGATIVE,
866 .p.priv_class = &ogg_muxer_class,
867 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
868 };
869 #endif
870
871 #if CONFIG_OGV_MUXER
872 const FFOutputFormat ff_ogv_muxer = {
873 .p.name = "ogv",
874 .p.long_name = NULL_IF_CONFIG_SMALL("Ogg Video"),
875 .p.mime_type = "video/ogg",
876 .p.extensions = "ogv",
877 .priv_data_size = sizeof(OGGContext),
878 .p.audio_codec = CONFIG_LIBVORBIS_ENCODER ?
879 AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
880 .p.video_codec = CONFIG_LIBTHEORA_ENCODER ?
881 AV_CODEC_ID_THEORA : AV_CODEC_ID_VP8,
882 .init = ogg_init,
883 .write_header = ogg_write_header,
884 .write_packet = ogg_write_packet,
885 .write_trailer = ogg_write_trailer,
886 .deinit = ogg_free,
887 .p.flags = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT,
888 .p.priv_class = &ogg_muxer_class,
889 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
890 };
891 #endif
892
893 #if CONFIG_SPX_MUXER
894 const FFOutputFormat ff_spx_muxer = {
895 .p.name = "spx",
896 .p.long_name = NULL_IF_CONFIG_SMALL("Ogg Speex"),
897 .p.mime_type = "audio/ogg",
898 .p.extensions = "spx",
899 .priv_data_size = sizeof(OGGContext),
900 .p.audio_codec = AV_CODEC_ID_SPEEX,
901 .init = ogg_init,
902 .write_header = ogg_write_header,
903 .write_packet = ogg_write_packet,
904 .write_trailer = ogg_write_trailer,
905 .deinit = ogg_free,
906 .p.flags = AVFMT_TS_NEGATIVE,
907 .p.priv_class = &ogg_muxer_class,
908 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
909 };
910 #endif
911
912 #if CONFIG_OPUS_MUXER
913 const FFOutputFormat ff_opus_muxer = {
914 .p.name = "opus",
915 .p.long_name = NULL_IF_CONFIG_SMALL("Ogg Opus"),
916 .p.mime_type = "audio/ogg",
917 .p.extensions = "opus",
918 .priv_data_size = sizeof(OGGContext),
919 .p.audio_codec = AV_CODEC_ID_OPUS,
920 .init = ogg_init,
921 .write_header = ogg_write_header,
922 .write_packet = ogg_write_packet,
923 .write_trailer = ogg_write_trailer,
924 .deinit = ogg_free,
925 .p.flags = AVFMT_TS_NEGATIVE,
926 .p.priv_class = &ogg_muxer_class,
927 .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH,
928 };
929 #endif
930