ogg: Use separate classes for the aliases
[ffmpeg.git] / libavformat / oggenc.c
1 /*
2  * Ogg muxer
3  * Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at free dot fr>
4  *
5  * This file is part of Libav.
6  *
7  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include <stdint.h>
23
24 #include "libavutil/crc.h"
25 #include "libavutil/mathematics.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/random_seed.h"
28 #include "libavcodec/xiph.h"
29 #include "libavcodec/bytestream.h"
30 #include "libavcodec/flac.h"
31 #include "avformat.h"
32 #include "avio_internal.h"
33 #include "internal.h"
34 #include "vorbiscomment.h"
35
36 #define MAX_PAGE_SIZE 65025
37
38 typedef struct {
39     int64_t start_granule;
40     int64_t granule;
41     int stream_index;
42     uint8_t flags;
43     uint8_t segments_count;
44     uint8_t segments[255];
45     uint8_t data[MAX_PAGE_SIZE];
46     uint16_t size;
47 } OGGPage;
48
49 typedef struct {
50     unsigned page_counter;
51     uint8_t *header[3];
52     int header_len[3];
53     /** for theora granule */
54     int kfgshift;
55     int64_t last_kf_pts;
56     int vrev;
57     int eos;
58     unsigned page_count; ///< number of page buffered
59     OGGPage page; ///< current page
60     unsigned serial_num; ///< serial number
61     int64_t last_granule; ///< last packet granule
62 } OGGStreamContext;
63
64 typedef struct OGGPageList {
65     OGGPage page;
66     struct OGGPageList *next;
67 } OGGPageList;
68
69 typedef struct {
70     const AVClass *class;
71     OGGPageList *page_list;
72     int pref_size; ///< preferred page size (0 => fill all segments)
73     int64_t pref_duration;      ///< preferred page duration (0 => fill all segments)
74 } OGGContext;
75
76 #define OFFSET(x) offsetof(OGGContext, x)
77 #define PARAM AV_OPT_FLAG_ENCODING_PARAM
78
79 static const AVOption options[] = {
80     { "pagesize", "preferred page size in bytes (deprecated)",
81         OFFSET(pref_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, MAX_PAGE_SIZE, PARAM },
82     { "page_duration", "preferred page duration, in microseconds",
83         OFFSET(pref_duration), AV_OPT_TYPE_INT64, { .i64 = 1000000 }, 0, INT64_MAX, PARAM },
84     { NULL },
85 };
86
87 #define OGG_CLASS(flavor)\
88 static const AVClass flavor ## _muxer_class = {\
89     .class_name = #flavor " muxer",\
90     .item_name  = av_default_item_name,\
91     .option     = options,\
92     .version    = LIBAVUTIL_VERSION_INT,\
93 };
94
95 static void ogg_update_checksum(AVFormatContext *s, AVIOContext *pb, int64_t crc_offset)
96 {
97     int64_t pos = avio_tell(pb);
98     uint32_t checksum = ffio_get_checksum(pb);
99     avio_seek(pb, crc_offset, SEEK_SET);
100     avio_wb32(pb, checksum);
101     avio_seek(pb, pos, SEEK_SET);
102 }
103
104 static int ogg_write_page(AVFormatContext *s, OGGPage *page, int extra_flags)
105 {
106     OGGStreamContext *oggstream = s->streams[page->stream_index]->priv_data;
107     AVIOContext *pb;
108     int64_t crc_offset;
109     int ret, size;
110     uint8_t *buf;
111
112     ret = avio_open_dyn_buf(&pb);
113     if (ret < 0)
114         return ret;
115     ffio_init_checksum(pb, ff_crc04C11DB7_update, 0);
116     ffio_wfourcc(pb, "OggS");
117     avio_w8(pb, 0);
118     avio_w8(pb, page->flags | extra_flags);
119     avio_wl64(pb, page->granule);
120     avio_wl32(pb, oggstream->serial_num);
121     avio_wl32(pb, oggstream->page_counter++);
122     crc_offset = avio_tell(pb);
123     avio_wl32(pb, 0); // crc
124     avio_w8(pb, page->segments_count);
125     avio_write(pb, page->segments, page->segments_count);
126     avio_write(pb, page->data, page->size);
127
128     ogg_update_checksum(s, pb, crc_offset);
129     avio_flush(pb);
130
131     size = avio_close_dyn_buf(pb, &buf);
132     if (size < 0)
133         return size;
134
135     avio_write(s->pb, buf, size);
136     avio_flush(s->pb);
137     av_free(buf);
138     oggstream->page_count--;
139     return 0;
140 }
141
142 static int64_t ogg_granule_to_timestamp(OGGStreamContext *oggstream, int64_t granule)
143 {
144     if (oggstream->kfgshift)
145         return (granule>>oggstream->kfgshift) +
146             (granule & ((1<<oggstream->kfgshift)-1));
147     else
148         return granule;
149 }
150
151 static int ogg_compare_granule(AVFormatContext *s, OGGPage *next, OGGPage *page)
152 {
153     AVStream *st2 = s->streams[next->stream_index];
154     AVStream *st  = s->streams[page->stream_index];
155     int64_t next_granule, cur_granule;
156
157     if (next->granule == -1 || page->granule == -1)
158         return 0;
159
160     next_granule = av_rescale_q(ogg_granule_to_timestamp(st2->priv_data, next->granule),
161                                 st2->time_base, AV_TIME_BASE_Q);
162     cur_granule  = av_rescale_q(ogg_granule_to_timestamp(st->priv_data, page->granule),
163                                 st ->time_base, AV_TIME_BASE_Q);
164     return next_granule > cur_granule;
165 }
166
167 static int ogg_reset_cur_page(OGGStreamContext *oggstream)
168 {
169     oggstream->page.granule = -1;
170     oggstream->page.flags = 0;
171     oggstream->page.segments_count = 0;
172     oggstream->page.size = 0;
173     return 0;
174 }
175
176 static int ogg_buffer_page(AVFormatContext *s, OGGStreamContext *oggstream)
177 {
178     OGGContext *ogg = s->priv_data;
179     OGGPageList **p = &ogg->page_list;
180     OGGPageList *l = av_mallocz(sizeof(*l));
181
182     if (!l)
183         return AVERROR(ENOMEM);
184     l->page = oggstream->page;
185
186     oggstream->page.start_granule = oggstream->page.granule;
187     oggstream->page_count++;
188     ogg_reset_cur_page(oggstream);
189
190     while (*p) {
191         if (ogg_compare_granule(s, &(*p)->page, &l->page))
192             break;
193         p = &(*p)->next;
194     }
195     l->next = *p;
196     *p = l;
197
198     return 0;
199 }
200
201 static int ogg_buffer_data(AVFormatContext *s, AVStream *st,
202                            uint8_t *data, unsigned size, int64_t granule,
203                            int header)
204 {
205     OGGStreamContext *oggstream = st->priv_data;
206     OGGContext *ogg = s->priv_data;
207     int total_segments = size / 255 + 1;
208     uint8_t *p = data;
209     int i, segments, len, flush = 0;
210
211     // Handles VFR by flushing page because this frame needs to have a timestamp
212     if (st->codec->codec_id == AV_CODEC_ID_THEORA && !header &&
213         ogg_granule_to_timestamp(oggstream, granule) >
214         ogg_granule_to_timestamp(oggstream, oggstream->last_granule) + 1) {
215         if (oggstream->page.granule != -1)
216             ogg_buffer_page(s, oggstream);
217         flush = 1;
218     }
219
220     // avoid a continued page
221     if (!header && oggstream->page.size > 0 &&
222         MAX_PAGE_SIZE - oggstream->page.size < size) {
223         ogg_buffer_page(s, oggstream);
224     }
225
226     for (i = 0; i < total_segments; ) {
227         OGGPage *page = &oggstream->page;
228
229         segments = FFMIN(total_segments - i, 255 - page->segments_count);
230
231         if (i && !page->segments_count)
232             page->flags |= 1; // continued packet
233
234         memset(page->segments+page->segments_count, 255, segments - 1);
235         page->segments_count += segments - 1;
236
237         len = FFMIN(size, segments*255);
238         page->segments[page->segments_count++] = len - (segments-1)*255;
239         memcpy(page->data+page->size, p, len);
240         p += len;
241         size -= len;
242         i += segments;
243         page->size += len;
244
245         if (i == total_segments)
246             page->granule = granule;
247
248         if (!header) {
249             AVStream *st = s->streams[page->stream_index];
250
251             int64_t start = av_rescale_q(page->start_granule, st->time_base,
252                                          AV_TIME_BASE_Q);
253             int64_t next  = av_rescale_q(page->granule, st->time_base,
254                                          AV_TIME_BASE_Q);
255
256             if (page->segments_count == 255 ||
257                 (ogg->pref_size     > 0 && page->size   >= ogg->pref_size) ||
258                 (ogg->pref_duration > 0 && next - start >= ogg->pref_duration)) {
259                 ogg_buffer_page(s, oggstream);
260             }
261         }
262     }
263
264     if (flush && oggstream->page.granule != -1)
265         ogg_buffer_page(s, oggstream);
266
267     return 0;
268 }
269
270 static uint8_t *ogg_write_vorbiscomment(int offset, int bitexact,
271                                         int *header_len, AVDictionary **m, int framing_bit)
272 {
273     const char *vendor = bitexact ? "Libav" : LIBAVFORMAT_IDENT;
274     int size;
275     uint8_t *p, *p0;
276
277     ff_metadata_conv(m, ff_vorbiscomment_metadata_conv, NULL);
278
279     size = offset + ff_vorbiscomment_length(*m, vendor) + framing_bit;
280     p = av_mallocz(size);
281     if (!p)
282         return NULL;
283     p0 = p;
284
285     p += offset;
286     ff_vorbiscomment_write(&p, m, vendor);
287     if (framing_bit)
288         bytestream_put_byte(&p, 1);
289
290     *header_len = size;
291     return p0;
292 }
293
294 static int ogg_build_flac_headers(AVCodecContext *avctx,
295                                   OGGStreamContext *oggstream, int bitexact,
296                                   AVDictionary **m)
297 {
298     enum FLACExtradataFormat format;
299     uint8_t *streaminfo;
300     uint8_t *p;
301
302     if (!avpriv_flac_is_extradata_valid(avctx, &format, &streaminfo))
303         return -1;
304
305     // first packet: STREAMINFO
306     oggstream->header_len[0] = 51;
307     oggstream->header[0] = av_mallocz(51); // per ogg flac specs
308     p = oggstream->header[0];
309     if (!p)
310         return AVERROR(ENOMEM);
311     bytestream_put_byte(&p, 0x7F);
312     bytestream_put_buffer(&p, "FLAC", 4);
313     bytestream_put_byte(&p, 1); // major version
314     bytestream_put_byte(&p, 0); // minor version
315     bytestream_put_be16(&p, 1); // headers packets without this one
316     bytestream_put_buffer(&p, "fLaC", 4);
317     bytestream_put_byte(&p, 0x00); // streaminfo
318     bytestream_put_be24(&p, 34);
319     bytestream_put_buffer(&p, streaminfo, FLAC_STREAMINFO_SIZE);
320
321     // second packet: VorbisComment
322     p = ogg_write_vorbiscomment(4, bitexact, &oggstream->header_len[1], m, 0);
323     if (!p)
324         return AVERROR(ENOMEM);
325     oggstream->header[1] = p;
326     bytestream_put_byte(&p, 0x84); // last metadata block and vorbis comment
327     bytestream_put_be24(&p, oggstream->header_len[1] - 4);
328
329     return 0;
330 }
331
332 #define SPEEX_HEADER_SIZE 80
333
334 static int ogg_build_speex_headers(AVCodecContext *avctx,
335                                    OGGStreamContext *oggstream, int bitexact,
336                                    AVDictionary **m)
337 {
338     uint8_t *p;
339
340     if (avctx->extradata_size < SPEEX_HEADER_SIZE)
341         return -1;
342
343     // first packet: Speex header
344     p = av_mallocz(SPEEX_HEADER_SIZE);
345     if (!p)
346         return AVERROR(ENOMEM);
347     oggstream->header[0] = p;
348     oggstream->header_len[0] = SPEEX_HEADER_SIZE;
349     bytestream_put_buffer(&p, avctx->extradata, SPEEX_HEADER_SIZE);
350     AV_WL32(&oggstream->header[0][68], 0);  // set extra_headers to 0
351
352     // second packet: VorbisComment
353     p = ogg_write_vorbiscomment(0, bitexact, &oggstream->header_len[1], m, 0);
354     if (!p)
355         return AVERROR(ENOMEM);
356     oggstream->header[1] = p;
357
358     return 0;
359 }
360
361 #define OPUS_HEADER_SIZE 19
362
363 static int ogg_build_opus_headers(AVCodecContext *avctx,
364                                   OGGStreamContext *oggstream, int bitexact,
365                                   AVDictionary **m)
366 {
367     uint8_t *p;
368
369     if (avctx->extradata_size < OPUS_HEADER_SIZE)
370         return -1;
371
372     /* first packet: Opus header */
373     p = av_mallocz(avctx->extradata_size);
374     if (!p)
375         return AVERROR(ENOMEM);
376     oggstream->header[0] = p;
377     oggstream->header_len[0] = avctx->extradata_size;
378     bytestream_put_buffer(&p, avctx->extradata, avctx->extradata_size);
379
380     /* second packet: VorbisComment */
381     p = ogg_write_vorbiscomment(8, bitexact, &oggstream->header_len[1], m, 0);
382     if (!p)
383         return AVERROR(ENOMEM);
384     oggstream->header[1] = p;
385     bytestream_put_buffer(&p, "OpusTags", 8);
386
387     return 0;
388 }
389
390 static void ogg_write_pages(AVFormatContext *s, int flush)
391 {
392     OGGContext *ogg = s->priv_data;
393     OGGPageList *next, *p;
394
395     if (!ogg->page_list)
396         return;
397
398     for (p = ogg->page_list; p; ) {
399         OGGStreamContext *oggstream =
400             s->streams[p->page.stream_index]->priv_data;
401         if (oggstream->page_count < 2 && !flush)
402             break;
403         ogg_write_page(s, &p->page,
404                        flush == 1 && oggstream->page_count == 1 ? 4 : 0); // eos
405         next = p->next;
406         av_freep(&p);
407         p = next;
408     }
409     ogg->page_list = p;
410 }
411
412 static int ogg_write_header(AVFormatContext *s)
413 {
414     OGGContext *ogg = s->priv_data;
415     OGGStreamContext *oggstream;
416     int i, j;
417
418     if (ogg->pref_size)
419         av_log(s, AV_LOG_WARNING, "The pagesize option is deprecated\n");
420
421     for (i = 0; i < s->nb_streams; i++) {
422         AVStream *st = s->streams[i];
423         unsigned serial_num = i;
424
425         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
426             if (st->codec->codec_id == AV_CODEC_ID_OPUS)
427                 /* Opus requires a fixed 48kHz clock */
428                 avpriv_set_pts_info(st, 64, 1, 48000);
429             else
430                 avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
431
432         if (st->codec->codec_id != AV_CODEC_ID_VORBIS &&
433             st->codec->codec_id != AV_CODEC_ID_THEORA &&
434             st->codec->codec_id != AV_CODEC_ID_SPEEX  &&
435             st->codec->codec_id != AV_CODEC_ID_FLAC   &&
436             st->codec->codec_id != AV_CODEC_ID_OPUS) {
437             av_log(s, AV_LOG_ERROR, "Unsupported codec id in stream %d\n", i);
438             return -1;
439         }
440
441         if (!st->codec->extradata || !st->codec->extradata_size) {
442             av_log(s, AV_LOG_ERROR, "No extradata present\n");
443             return -1;
444         }
445         oggstream = av_mallocz(sizeof(*oggstream));
446         oggstream->page.stream_index = i;
447
448         if (!(s->flags & AVFMT_FLAG_BITEXACT))
449             do {
450                 serial_num = av_get_random_seed();
451                 for (j = 0; j < i; j++) {
452                     OGGStreamContext *sc = s->streams[j]->priv_data;
453                     if (serial_num == sc->serial_num)
454                         break;
455                 }
456             } while (j < i);
457         oggstream->serial_num = serial_num;
458
459         st->priv_data = oggstream;
460         if (st->codec->codec_id == AV_CODEC_ID_FLAC) {
461             int err = ogg_build_flac_headers(st->codec, oggstream,
462                                              s->flags & AVFMT_FLAG_BITEXACT,
463                                              &s->metadata);
464             if (err) {
465                 av_log(s, AV_LOG_ERROR, "Error writing FLAC headers\n");
466                 av_freep(&st->priv_data);
467                 return err;
468             }
469         } else if (st->codec->codec_id == AV_CODEC_ID_SPEEX) {
470             int err = ogg_build_speex_headers(st->codec, oggstream,
471                                               s->flags & AVFMT_FLAG_BITEXACT,
472                                               &s->metadata);
473             if (err) {
474                 av_log(s, AV_LOG_ERROR, "Error writing Speex headers\n");
475                 av_freep(&st->priv_data);
476                 return err;
477             }
478         } else if (st->codec->codec_id == AV_CODEC_ID_OPUS) {
479             int err = ogg_build_opus_headers(st->codec, oggstream,
480                                              s->flags & AVFMT_FLAG_BITEXACT,
481                                              &s->metadata);
482             if (err) {
483                 av_log(s, AV_LOG_ERROR, "Error writing Opus headers\n");
484                 av_freep(&st->priv_data);
485                 return err;
486             }
487         } else {
488             uint8_t *p;
489             const char *cstr = st->codec->codec_id == AV_CODEC_ID_VORBIS ? "vorbis" : "theora";
490             int header_type = st->codec->codec_id == AV_CODEC_ID_VORBIS ? 3 : 0x81;
491             int framing_bit = st->codec->codec_id == AV_CODEC_ID_VORBIS ? 1 : 0;
492
493             if (avpriv_split_xiph_headers(st->codec->extradata, st->codec->extradata_size,
494                                       st->codec->codec_id == AV_CODEC_ID_VORBIS ? 30 : 42,
495                                       oggstream->header, oggstream->header_len) < 0) {
496                 av_log(s, AV_LOG_ERROR, "Extradata corrupted\n");
497                 av_freep(&st->priv_data);
498                 return -1;
499             }
500
501             p = ogg_write_vorbiscomment(7, s->flags & AVFMT_FLAG_BITEXACT,
502                                         &oggstream->header_len[1], &s->metadata,
503                                         framing_bit);
504             oggstream->header[1] = p;
505             if (!p)
506                 return AVERROR(ENOMEM);
507
508             bytestream_put_byte(&p, header_type);
509             bytestream_put_buffer(&p, cstr, 6);
510
511             if (st->codec->codec_id == AV_CODEC_ID_THEORA) {
512                 /** KFGSHIFT is the width of the less significant section of the granule position
513                     The less significant section is the frame count since the last keyframe */
514                 oggstream->kfgshift = ((oggstream->header[0][40]&3)<<3)|(oggstream->header[0][41]>>5);
515                 oggstream->vrev = oggstream->header[0][9];
516                 av_log(s, AV_LOG_DEBUG, "theora kfgshift %d, vrev %d\n",
517                        oggstream->kfgshift, oggstream->vrev);
518             }
519         }
520     }
521
522     for (j = 0; j < s->nb_streams; j++) {
523         OGGStreamContext *oggstream = s->streams[j]->priv_data;
524         ogg_buffer_data(s, s->streams[j], oggstream->header[0],
525                         oggstream->header_len[0], 0, 1);
526         oggstream->page.flags |= 2; // bos
527         ogg_buffer_page(s, oggstream);
528     }
529     for (j = 0; j < s->nb_streams; j++) {
530         AVStream *st = s->streams[j];
531         OGGStreamContext *oggstream = st->priv_data;
532         for (i = 1; i < 3; i++) {
533             if (oggstream && oggstream->header_len[i])
534                 ogg_buffer_data(s, st, oggstream->header[i],
535                                 oggstream->header_len[i], 0, 1);
536         }
537         ogg_buffer_page(s, oggstream);
538     }
539
540     oggstream->page.start_granule = AV_NOPTS_VALUE;
541
542     ogg_write_pages(s, 2);
543
544     return 0;
545 }
546
547 static int ogg_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
548 {
549     AVStream *st = s->streams[pkt->stream_index];
550     OGGStreamContext *oggstream = st->priv_data;
551     int ret;
552     int64_t granule;
553
554     if (st->codec->codec_id == AV_CODEC_ID_THEORA) {
555         int64_t pts = oggstream->vrev < 1 ? pkt->pts : pkt->pts + pkt->duration;
556         int pframe_count;
557         if (pkt->flags & AV_PKT_FLAG_KEY)
558             oggstream->last_kf_pts = pts;
559         pframe_count = pts - oggstream->last_kf_pts;
560         // prevent frame count from overflow if key frame flag is not set
561         if (pframe_count >= (1<<oggstream->kfgshift)) {
562             oggstream->last_kf_pts += pframe_count;
563             pframe_count = 0;
564         }
565         granule = (oggstream->last_kf_pts<<oggstream->kfgshift) | pframe_count;
566     } else if (st->codec->codec_id == AV_CODEC_ID_OPUS)
567         granule = pkt->pts + pkt->duration + av_rescale_q(st->codec->delay, (AVRational){ 1, st->codec->sample_rate }, st->time_base);
568     else
569         granule = pkt->pts + pkt->duration;
570
571     if (oggstream->page.start_granule == AV_NOPTS_VALUE)
572         oggstream->page.start_granule = pkt->pts;
573
574     ret = ogg_buffer_data(s, st, pkt->data, pkt->size, granule, 0);
575     if (ret < 0)
576         return ret;
577
578     ogg_write_pages(s, 0);
579
580     oggstream->last_granule = granule;
581
582     return 0;
583 }
584
585 static int ogg_write_packet(AVFormatContext *s, AVPacket *pkt)
586 {
587     int i;
588
589     if (pkt)
590         return ogg_write_packet_internal(s, pkt);
591
592     for (i = 0; i < s->nb_streams; i++) {
593         OGGStreamContext *oggstream = s->streams[i]->priv_data;
594         if (oggstream->page.segments_count)
595             ogg_buffer_page(s, oggstream);
596     }
597
598     ogg_write_pages(s, 2);
599     return 0;
600 }
601
602 static int ogg_write_trailer(AVFormatContext *s)
603 {
604     int i;
605
606     /* flush current page if needed */
607     for (i = 0; i < s->nb_streams; i++) {
608         OGGStreamContext *oggstream = s->streams[i]->priv_data;
609
610         if (oggstream->page.size > 0)
611             ogg_buffer_page(s, oggstream);
612     }
613
614     ogg_write_pages(s, 1);
615
616     for (i = 0; i < s->nb_streams; i++) {
617         AVStream *st = s->streams[i];
618         OGGStreamContext *oggstream = st->priv_data;
619         if (st->codec->codec_id == AV_CODEC_ID_FLAC ||
620             st->codec->codec_id == AV_CODEC_ID_SPEEX ||
621             st->codec->codec_id == AV_CODEC_ID_OPUS) {
622             av_free(oggstream->header[0]);
623         }
624         av_freep(&oggstream->header[1]);
625         av_freep(&st->priv_data);
626     }
627     return 0;
628 }
629
630 #if CONFIG_OGG_MUXER
631 OGG_CLASS(ogg)
632 AVOutputFormat ff_ogg_muxer = {
633     .name              = "ogg",
634     .long_name         = NULL_IF_CONFIG_SMALL("Ogg"),
635     .mime_type         = "application/ogg",
636     .extensions        = "ogg,ogv",
637     .priv_data_size    = sizeof(OGGContext),
638     .audio_codec       = CONFIG_LIBVORBIS_ENCODER ?
639                          AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
640     .video_codec       = AV_CODEC_ID_THEORA,
641     .write_header      = ogg_write_header,
642     .write_packet      = ogg_write_packet,
643     .write_trailer     = ogg_write_trailer,
644     .flags             = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
645     .priv_class        = &ogg_muxer_class,
646 };
647 #endif
648
649 #if CONFIG_OGA_MUXER
650 OGG_CLASS(oga)
651 AVOutputFormat ff_oga_muxer = {
652     .name              = "oga",
653     .long_name         = NULL_IF_CONFIG_SMALL("Ogg Audio"),
654     .mime_type         = "audio/ogg",
655     .extensions        = "oga",
656     .priv_data_size    = sizeof(OGGContext),
657     .audio_codec       = CONFIG_LIBVORBIS_ENCODER ?
658                          AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
659     .write_header      = ogg_write_header,
660     .write_packet      = ogg_write_packet,
661     .write_trailer     = ogg_write_trailer,
662     .flags             = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
663     .priv_class        = &oga_muxer_class,
664 };
665 #endif
666
667 #if CONFIG_SPX_MUXER
668 OGG_CLASS(spx)
669 AVOutputFormat ff_spx_muxer = {
670     .name              = "spx",
671     .long_name         = NULL_IF_CONFIG_SMALL("Ogg Speex"),
672     .mime_type         = "audio/ogg",
673     .extensions        = "spx",
674     .priv_data_size    = sizeof(OGGContext),
675     .audio_codec       = AV_CODEC_ID_SPEEX,
676     .write_header      = ogg_write_header,
677     .write_packet      = ogg_write_packet,
678     .write_trailer     = ogg_write_trailer,
679     .flags             = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
680     .priv_class        = &spx_muxer_class,
681 };
682 #endif
683
684 #if CONFIG_OPUS_MUXER
685 OGG_CLASS(opus)
686 AVOutputFormat ff_opus_muxer = {
687     .name              = "opus",
688     .long_name         = NULL_IF_CONFIG_SMALL("Ogg Opus"),
689     .mime_type         = "audio/ogg",
690     .extensions        = "opus",
691     .priv_data_size    = sizeof(OGGContext),
692     .audio_codec       = AV_CODEC_ID_OPUS,
693     .write_header      = ogg_write_header,
694     .write_packet      = ogg_write_packet,
695     .write_trailer     = ogg_write_trailer,
696     .flags             = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
697     .priv_class        = &opus_muxer_class,
698 };
699 #endif