lavu: Add version information for av_version_info()
[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 OGGPage {
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 OGGStreamContext {
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 OGGContext {
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     int serial_offset;
75 } OGGContext;
76
77 #define OFFSET(x) offsetof(OGGContext, x)
78 #define PARAM AV_OPT_FLAG_ENCODING_PARAM
79
80 static const AVOption options[] = {
81     { "serial_offset", "serial number offset",
82         OFFSET(serial_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, PARAM },
83     { "pagesize", "preferred page size in bytes (deprecated)",
84         OFFSET(pref_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, MAX_PAGE_SIZE, PARAM },
85     { "page_duration", "preferred page duration, in microseconds",
86         OFFSET(pref_duration), AV_OPT_TYPE_INT64, { .i64 = 1000000 }, 0, INT64_MAX, PARAM },
87     { NULL },
88 };
89
90 #define OGG_CLASS(flavor)\
91 static const AVClass flavor ## _muxer_class = {\
92     .class_name = #flavor " muxer",\
93     .item_name  = av_default_item_name,\
94     .option     = options,\
95     .version    = LIBAVUTIL_VERSION_INT,\
96 };
97
98 static void ogg_update_checksum(AVFormatContext *s, AVIOContext *pb, int64_t crc_offset)
99 {
100     int64_t pos = avio_tell(pb);
101     uint32_t checksum = ffio_get_checksum(pb);
102     avio_seek(pb, crc_offset, SEEK_SET);
103     avio_wb32(pb, checksum);
104     avio_seek(pb, pos, SEEK_SET);
105 }
106
107 static int ogg_write_page(AVFormatContext *s, OGGPage *page, int extra_flags)
108 {
109     OGGStreamContext *oggstream = s->streams[page->stream_index]->priv_data;
110     AVIOContext *pb;
111     int64_t crc_offset;
112     int ret, size;
113     uint8_t *buf;
114
115     ret = avio_open_dyn_buf(&pb);
116     if (ret < 0)
117         return ret;
118     ffio_init_checksum(pb, ff_crc04C11DB7_update, 0);
119     ffio_wfourcc(pb, "OggS");
120     avio_w8(pb, 0);
121     avio_w8(pb, page->flags | extra_flags);
122     avio_wl64(pb, page->granule);
123     avio_wl32(pb, oggstream->serial_num);
124     avio_wl32(pb, oggstream->page_counter++);
125     crc_offset = avio_tell(pb);
126     avio_wl32(pb, 0); // crc
127     avio_w8(pb, page->segments_count);
128     avio_write(pb, page->segments, page->segments_count);
129     avio_write(pb, page->data, page->size);
130
131     ogg_update_checksum(s, pb, crc_offset);
132     avio_flush(pb);
133
134     size = avio_close_dyn_buf(pb, &buf);
135     if (size < 0)
136         return size;
137
138     avio_write(s->pb, buf, size);
139     avio_flush(s->pb);
140     av_free(buf);
141     oggstream->page_count--;
142     return 0;
143 }
144
145 static int64_t ogg_granule_to_timestamp(OGGStreamContext *oggstream, int64_t granule)
146 {
147     if (oggstream->kfgshift)
148         return (granule>>oggstream->kfgshift) +
149             (granule & ((1<<oggstream->kfgshift)-1));
150     else
151         return granule;
152 }
153
154 static int ogg_compare_granule(AVFormatContext *s, OGGPage *next, OGGPage *page)
155 {
156     AVStream *st2 = s->streams[next->stream_index];
157     AVStream *st  = s->streams[page->stream_index];
158     int64_t next_granule, cur_granule;
159
160     if (next->granule == -1 || page->granule == -1)
161         return 0;
162
163     next_granule = av_rescale_q(ogg_granule_to_timestamp(st2->priv_data, next->granule),
164                                 st2->time_base, AV_TIME_BASE_Q);
165     cur_granule  = av_rescale_q(ogg_granule_to_timestamp(st->priv_data, page->granule),
166                                 st ->time_base, AV_TIME_BASE_Q);
167     return next_granule > cur_granule;
168 }
169
170 static int ogg_reset_cur_page(OGGStreamContext *oggstream)
171 {
172     oggstream->page.granule = -1;
173     oggstream->page.flags = 0;
174     oggstream->page.segments_count = 0;
175     oggstream->page.size = 0;
176     return 0;
177 }
178
179 static int ogg_buffer_page(AVFormatContext *s, OGGStreamContext *oggstream)
180 {
181     OGGContext *ogg = s->priv_data;
182     OGGPageList **p = &ogg->page_list;
183     OGGPageList *l = av_mallocz(sizeof(*l));
184
185     if (!l)
186         return AVERROR(ENOMEM);
187     l->page = oggstream->page;
188
189     oggstream->page.start_granule = oggstream->page.granule;
190     oggstream->page_count++;
191     ogg_reset_cur_page(oggstream);
192
193     while (*p) {
194         if (ogg_compare_granule(s, &(*p)->page, &l->page))
195             break;
196         p = &(*p)->next;
197     }
198     l->next = *p;
199     *p = l;
200
201     return 0;
202 }
203
204 static int ogg_buffer_data(AVFormatContext *s, AVStream *st,
205                            uint8_t *data, unsigned size, int64_t granule,
206                            int header)
207 {
208     OGGStreamContext *oggstream = st->priv_data;
209     OGGContext *ogg = s->priv_data;
210     int total_segments = size / 255 + 1;
211     uint8_t *p = data;
212     int i, segments, len, flush = 0;
213
214     // Handles VFR by flushing page because this frame needs to have a timestamp
215     if (st->codec->codec_id == AV_CODEC_ID_THEORA && !header &&
216         ogg_granule_to_timestamp(oggstream, granule) >
217         ogg_granule_to_timestamp(oggstream, oggstream->last_granule) + 1) {
218         if (oggstream->page.granule != -1)
219             ogg_buffer_page(s, oggstream);
220         flush = 1;
221     }
222
223     // avoid a continued page
224     if (!header && oggstream->page.size > 0 &&
225         MAX_PAGE_SIZE - oggstream->page.size < size) {
226         ogg_buffer_page(s, oggstream);
227     }
228
229     for (i = 0; i < total_segments; ) {
230         OGGPage *page = &oggstream->page;
231
232         segments = FFMIN(total_segments - i, 255 - page->segments_count);
233
234         if (i && !page->segments_count)
235             page->flags |= 1; // continued packet
236
237         memset(page->segments+page->segments_count, 255, segments - 1);
238         page->segments_count += segments - 1;
239
240         len = FFMIN(size, segments*255);
241         page->segments[page->segments_count++] = len - (segments-1)*255;
242         memcpy(page->data+page->size, p, len);
243         p += len;
244         size -= len;
245         i += segments;
246         page->size += len;
247
248         if (i == total_segments)
249             page->granule = granule;
250
251         if (!header) {
252             AVStream *st = s->streams[page->stream_index];
253
254             int64_t start = av_rescale_q(page->start_granule, st->time_base,
255                                          AV_TIME_BASE_Q);
256             int64_t next  = av_rescale_q(page->granule, st->time_base,
257                                          AV_TIME_BASE_Q);
258
259             if (page->segments_count == 255 ||
260                 (ogg->pref_size     > 0 && page->size   >= ogg->pref_size) ||
261                 (ogg->pref_duration > 0 && next - start >= ogg->pref_duration)) {
262                 ogg_buffer_page(s, oggstream);
263             }
264         }
265     }
266
267     if (flush && oggstream->page.granule != -1)
268         ogg_buffer_page(s, oggstream);
269
270     return 0;
271 }
272
273 static uint8_t *ogg_write_vorbiscomment(int offset, int bitexact,
274                                         int *header_len, AVDictionary **m, int framing_bit)
275 {
276     const char *vendor = bitexact ? "Libav" : LIBAVFORMAT_IDENT;
277     int size;
278     uint8_t *p, *p0;
279
280     ff_metadata_conv(m, ff_vorbiscomment_metadata_conv, NULL);
281
282     size = offset + ff_vorbiscomment_length(*m, vendor) + framing_bit;
283     p = av_mallocz(size);
284     if (!p)
285         return NULL;
286     p0 = p;
287
288     p += offset;
289     ff_vorbiscomment_write(&p, m, vendor);
290     if (framing_bit)
291         bytestream_put_byte(&p, 1);
292
293     *header_len = size;
294     return p0;
295 }
296
297 static int ogg_build_flac_headers(AVCodecContext *avctx,
298                                   OGGStreamContext *oggstream, int bitexact,
299                                   AVDictionary **m)
300 {
301     uint8_t *p;
302
303     if (avctx->extradata_size < FLAC_STREAMINFO_SIZE)
304         return AVERROR(EINVAL);
305
306     // first packet: STREAMINFO
307     oggstream->header_len[0] = 51;
308     oggstream->header[0] = av_mallocz(51); // per ogg flac specs
309     p = oggstream->header[0];
310     if (!p)
311         return AVERROR(ENOMEM);
312     bytestream_put_byte(&p, 0x7F);
313     bytestream_put_buffer(&p, "FLAC", 4);
314     bytestream_put_byte(&p, 1); // major version
315     bytestream_put_byte(&p, 0); // minor version
316     bytestream_put_be16(&p, 1); // headers packets without this one
317     bytestream_put_buffer(&p, "fLaC", 4);
318     bytestream_put_byte(&p, 0x00); // streaminfo
319     bytestream_put_be24(&p, 34);
320     bytestream_put_buffer(&p, avctx->extradata, FLAC_STREAMINFO_SIZE);
321
322     // second packet: VorbisComment
323     p = ogg_write_vorbiscomment(4, bitexact, &oggstream->header_len[1], m, 0);
324     if (!p)
325         return AVERROR(ENOMEM);
326     oggstream->header[1] = p;
327     bytestream_put_byte(&p, 0x84); // last metadata block and vorbis comment
328     bytestream_put_be24(&p, oggstream->header_len[1] - 4);
329
330     return 0;
331 }
332
333 #define SPEEX_HEADER_SIZE 80
334
335 static int ogg_build_speex_headers(AVCodecContext *avctx,
336                                    OGGStreamContext *oggstream, int bitexact,
337                                    AVDictionary **m)
338 {
339     uint8_t *p;
340
341     if (avctx->extradata_size < SPEEX_HEADER_SIZE)
342         return -1;
343
344     // first packet: Speex header
345     p = av_mallocz(SPEEX_HEADER_SIZE);
346     if (!p)
347         return AVERROR(ENOMEM);
348     oggstream->header[0] = p;
349     oggstream->header_len[0] = SPEEX_HEADER_SIZE;
350     bytestream_put_buffer(&p, avctx->extradata, SPEEX_HEADER_SIZE);
351     AV_WL32(&oggstream->header[0][68], 0);  // set extra_headers to 0
352
353     // second packet: VorbisComment
354     p = ogg_write_vorbiscomment(0, bitexact, &oggstream->header_len[1], m, 0);
355     if (!p)
356         return AVERROR(ENOMEM);
357     oggstream->header[1] = p;
358
359     return 0;
360 }
361
362 #define OPUS_HEADER_SIZE 19
363
364 static int ogg_build_opus_headers(AVCodecContext *avctx,
365                                   OGGStreamContext *oggstream, int bitexact,
366                                   AVDictionary **m)
367 {
368     uint8_t *p;
369
370     if (avctx->extradata_size < OPUS_HEADER_SIZE)
371         return -1;
372
373     /* first packet: Opus header */
374     p = av_mallocz(avctx->extradata_size);
375     if (!p)
376         return AVERROR(ENOMEM);
377     oggstream->header[0] = p;
378     oggstream->header_len[0] = avctx->extradata_size;
379     bytestream_put_buffer(&p, avctx->extradata, avctx->extradata_size);
380
381     /* second packet: VorbisComment */
382     p = ogg_write_vorbiscomment(8, bitexact, &oggstream->header_len[1], m, 0);
383     if (!p)
384         return AVERROR(ENOMEM);
385     oggstream->header[1] = p;
386     bytestream_put_buffer(&p, "OpusTags", 8);
387
388     return 0;
389 }
390
391 static void ogg_write_pages(AVFormatContext *s, int flush)
392 {
393     OGGContext *ogg = s->priv_data;
394     OGGPageList *next, *p;
395
396     if (!ogg->page_list)
397         return;
398
399     for (p = ogg->page_list; p; ) {
400         OGGStreamContext *oggstream =
401             s->streams[p->page.stream_index]->priv_data;
402         if (oggstream->page_count < 2 && !flush)
403             break;
404         ogg_write_page(s, &p->page,
405                        flush == 1 && oggstream->page_count == 1 ? 4 : 0); // eos
406         next = p->next;
407         av_freep(&p);
408         p = next;
409     }
410     ogg->page_list = p;
411 }
412
413 static int ogg_write_header(AVFormatContext *s)
414 {
415     OGGContext *ogg = s->priv_data;
416     OGGStreamContext *oggstream;
417     int i, j;
418
419     if (ogg->pref_size)
420         av_log(s, AV_LOG_WARNING, "The pagesize option is deprecated\n");
421
422     for (i = 0; i < s->nb_streams; i++) {
423         AVStream *st = s->streams[i];
424         unsigned serial_num = i + ogg->serial_offset;
425
426         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
427             if (st->codec->codec_id == AV_CODEC_ID_OPUS)
428                 /* Opus requires a fixed 48kHz clock */
429                 avpriv_set_pts_info(st, 64, 1, 48000);
430             else
431                 avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
432
433         if (st->codec->codec_id != AV_CODEC_ID_VORBIS &&
434             st->codec->codec_id != AV_CODEC_ID_THEORA &&
435             st->codec->codec_id != AV_CODEC_ID_SPEEX  &&
436             st->codec->codec_id != AV_CODEC_ID_FLAC   &&
437             st->codec->codec_id != AV_CODEC_ID_OPUS) {
438             av_log(s, AV_LOG_ERROR, "Unsupported codec id in stream %d\n", i);
439             return -1;
440         }
441
442         if (!st->codec->extradata || !st->codec->extradata_size) {
443             av_log(s, AV_LOG_ERROR, "No extradata present\n");
444             return -1;
445         }
446         oggstream = av_mallocz(sizeof(*oggstream));
447         if (!oggstream)
448             return AVERROR(ENOMEM);
449         oggstream->page.stream_index = i;
450
451         if (!(s->flags & AVFMT_FLAG_BITEXACT))
452             do {
453                 serial_num = av_get_random_seed();
454                 for (j = 0; j < i; j++) {
455                     OGGStreamContext *sc = s->streams[j]->priv_data;
456                     if (serial_num == sc->serial_num)
457                         break;
458                 }
459             } while (j < i);
460         oggstream->serial_num = serial_num;
461
462         st->priv_data = oggstream;
463         if (st->codec->codec_id == AV_CODEC_ID_FLAC) {
464             int err = ogg_build_flac_headers(st->codec, oggstream,
465                                              s->flags & AVFMT_FLAG_BITEXACT,
466                                              &s->metadata);
467             if (err) {
468                 av_log(s, AV_LOG_ERROR, "Error writing FLAC headers\n");
469                 av_freep(&st->priv_data);
470                 return err;
471             }
472         } else if (st->codec->codec_id == AV_CODEC_ID_SPEEX) {
473             int err = ogg_build_speex_headers(st->codec, oggstream,
474                                               s->flags & AVFMT_FLAG_BITEXACT,
475                                               &s->metadata);
476             if (err) {
477                 av_log(s, AV_LOG_ERROR, "Error writing Speex headers\n");
478                 av_freep(&st->priv_data);
479                 return err;
480             }
481         } else if (st->codec->codec_id == AV_CODEC_ID_OPUS) {
482             int err = ogg_build_opus_headers(st->codec, oggstream,
483                                              s->flags & AVFMT_FLAG_BITEXACT,
484                                              &s->metadata);
485             if (err) {
486                 av_log(s, AV_LOG_ERROR, "Error writing Opus headers\n");
487                 av_freep(&st->priv_data);
488                 return err;
489             }
490         } else {
491             uint8_t *p;
492             const char *cstr = st->codec->codec_id == AV_CODEC_ID_VORBIS ? "vorbis" : "theora";
493             int header_type = st->codec->codec_id == AV_CODEC_ID_VORBIS ? 3 : 0x81;
494             int framing_bit = st->codec->codec_id == AV_CODEC_ID_VORBIS ? 1 : 0;
495
496             if (avpriv_split_xiph_headers(st->codec->extradata, st->codec->extradata_size,
497                                       st->codec->codec_id == AV_CODEC_ID_VORBIS ? 30 : 42,
498                                       oggstream->header, oggstream->header_len) < 0) {
499                 av_log(s, AV_LOG_ERROR, "Extradata corrupted\n");
500                 av_freep(&st->priv_data);
501                 return -1;
502             }
503
504             p = ogg_write_vorbiscomment(7, s->flags & AVFMT_FLAG_BITEXACT,
505                                         &oggstream->header_len[1], &s->metadata,
506                                         framing_bit);
507             oggstream->header[1] = p;
508             if (!p)
509                 return AVERROR(ENOMEM);
510
511             bytestream_put_byte(&p, header_type);
512             bytestream_put_buffer(&p, cstr, 6);
513
514             if (st->codec->codec_id == AV_CODEC_ID_THEORA) {
515                 /** KFGSHIFT is the width of the less significant section of the granule position
516                     The less significant section is the frame count since the last keyframe */
517                 oggstream->kfgshift = ((oggstream->header[0][40]&3)<<3)|(oggstream->header[0][41]>>5);
518                 oggstream->vrev = oggstream->header[0][9];
519                 av_log(s, AV_LOG_DEBUG, "theora kfgshift %d, vrev %d\n",
520                        oggstream->kfgshift, oggstream->vrev);
521             }
522         }
523     }
524
525     for (j = 0; j < s->nb_streams; j++) {
526         OGGStreamContext *oggstream = s->streams[j]->priv_data;
527         ogg_buffer_data(s, s->streams[j], oggstream->header[0],
528                         oggstream->header_len[0], 0, 1);
529         oggstream->page.flags |= 2; // bos
530         ogg_buffer_page(s, oggstream);
531     }
532     for (j = 0; j < s->nb_streams; j++) {
533         AVStream *st = s->streams[j];
534         OGGStreamContext *oggstream = st->priv_data;
535         for (i = 1; i < 3; i++) {
536             if (oggstream->header_len[i])
537                 ogg_buffer_data(s, st, oggstream->header[i],
538                                 oggstream->header_len[i], 0, 1);
539         }
540         ogg_buffer_page(s, oggstream);
541     }
542
543     oggstream->page.start_granule = AV_NOPTS_VALUE;
544
545     ogg_write_pages(s, 2);
546
547     return 0;
548 }
549
550 static int ogg_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
551 {
552     AVStream *st = s->streams[pkt->stream_index];
553     OGGStreamContext *oggstream = st->priv_data;
554     int ret;
555     int64_t granule;
556
557     if (st->codec->codec_id == AV_CODEC_ID_THEORA) {
558         int64_t pts = oggstream->vrev < 1 ? pkt->pts : pkt->pts + pkt->duration;
559         int pframe_count;
560         if (pkt->flags & AV_PKT_FLAG_KEY)
561             oggstream->last_kf_pts = pts;
562         pframe_count = pts - oggstream->last_kf_pts;
563         // prevent frame count from overflow if key frame flag is not set
564         if (pframe_count >= (1<<oggstream->kfgshift)) {
565             oggstream->last_kf_pts += pframe_count;
566             pframe_count = 0;
567         }
568         granule = (oggstream->last_kf_pts<<oggstream->kfgshift) | pframe_count;
569     } else if (st->codec->codec_id == AV_CODEC_ID_OPUS)
570         granule = pkt->pts + pkt->duration +
571                   av_rescale_q(st->codec->initial_padding,
572                                (AVRational){ 1, st->codec->sample_rate },
573                                st->time_base);
574     else
575         granule = pkt->pts + pkt->duration;
576
577     if (oggstream->page.start_granule == AV_NOPTS_VALUE)
578         oggstream->page.start_granule = pkt->pts;
579
580     ret = ogg_buffer_data(s, st, pkt->data, pkt->size, granule, 0);
581     if (ret < 0)
582         return ret;
583
584     ogg_write_pages(s, 0);
585
586     oggstream->last_granule = granule;
587
588     return 0;
589 }
590
591 static int ogg_write_packet(AVFormatContext *s, AVPacket *pkt)
592 {
593     int i;
594
595     if (pkt)
596         return ogg_write_packet_internal(s, pkt);
597
598     for (i = 0; i < s->nb_streams; i++) {
599         OGGStreamContext *oggstream = s->streams[i]->priv_data;
600         if (oggstream->page.segments_count)
601             ogg_buffer_page(s, oggstream);
602     }
603
604     ogg_write_pages(s, 2);
605     return 0;
606 }
607
608 static int ogg_write_trailer(AVFormatContext *s)
609 {
610     int i;
611
612     /* flush current page if needed */
613     for (i = 0; i < s->nb_streams; i++) {
614         OGGStreamContext *oggstream = s->streams[i]->priv_data;
615
616         if (oggstream->page.size > 0)
617             ogg_buffer_page(s, oggstream);
618     }
619
620     ogg_write_pages(s, 1);
621
622     for (i = 0; i < s->nb_streams; i++) {
623         AVStream *st = s->streams[i];
624         OGGStreamContext *oggstream = st->priv_data;
625         if (st->codec->codec_id == AV_CODEC_ID_FLAC ||
626             st->codec->codec_id == AV_CODEC_ID_SPEEX ||
627             st->codec->codec_id == AV_CODEC_ID_OPUS) {
628             av_free(oggstream->header[0]);
629         }
630         av_freep(&oggstream->header[1]);
631         av_freep(&st->priv_data);
632     }
633     return 0;
634 }
635
636 #if CONFIG_OGG_MUXER
637 OGG_CLASS(ogg)
638 AVOutputFormat ff_ogg_muxer = {
639     .name              = "ogg",
640     .long_name         = NULL_IF_CONFIG_SMALL("Ogg"),
641     .mime_type         = "application/ogg",
642     .extensions        = "ogg,ogv",
643     .priv_data_size    = sizeof(OGGContext),
644     .audio_codec       = CONFIG_LIBVORBIS_ENCODER ?
645                          AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
646     .video_codec       = AV_CODEC_ID_THEORA,
647     .write_header      = ogg_write_header,
648     .write_packet      = ogg_write_packet,
649     .write_trailer     = ogg_write_trailer,
650     .flags             = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
651     .priv_class        = &ogg_muxer_class,
652 };
653 #endif
654
655 #if CONFIG_OGA_MUXER
656 OGG_CLASS(oga)
657 AVOutputFormat ff_oga_muxer = {
658     .name              = "oga",
659     .long_name         = NULL_IF_CONFIG_SMALL("Ogg Audio"),
660     .mime_type         = "audio/ogg",
661     .extensions        = "oga",
662     .priv_data_size    = sizeof(OGGContext),
663     .audio_codec       = CONFIG_LIBVORBIS_ENCODER ?
664                          AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
665     .write_header      = ogg_write_header,
666     .write_packet      = ogg_write_packet,
667     .write_trailer     = ogg_write_trailer,
668     .flags             = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
669     .priv_class        = &oga_muxer_class,
670 };
671 #endif
672
673 #if CONFIG_SPX_MUXER
674 OGG_CLASS(spx)
675 AVOutputFormat ff_spx_muxer = {
676     .name              = "spx",
677     .long_name         = NULL_IF_CONFIG_SMALL("Ogg Speex"),
678     .mime_type         = "audio/ogg",
679     .extensions        = "spx",
680     .priv_data_size    = sizeof(OGGContext),
681     .audio_codec       = AV_CODEC_ID_SPEEX,
682     .write_header      = ogg_write_header,
683     .write_packet      = ogg_write_packet,
684     .write_trailer     = ogg_write_trailer,
685     .flags             = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
686     .priv_class        = &spx_muxer_class,
687 };
688 #endif
689
690 #if CONFIG_OPUS_MUXER
691 OGG_CLASS(opus)
692 AVOutputFormat ff_opus_muxer = {
693     .name              = "opus",
694     .long_name         = NULL_IF_CONFIG_SMALL("Ogg Opus"),
695     .mime_type         = "audio/ogg",
696     .extensions        = "opus",
697     .priv_data_size    = sizeof(OGGContext),
698     .audio_codec       = AV_CODEC_ID_OPUS,
699     .write_header      = ogg_write_header,
700     .write_packet      = ogg_write_packet,
701     .write_trailer     = ogg_write_trailer,
702     .flags             = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
703     .priv_class        = &opus_muxer_class,
704 };
705 #endif