3 * Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at free dot fr>
5 * This file is part of FFmpeg.
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.
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.
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
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"
32 #include "avio_internal.h"
34 #include "vorbiscomment.h"
36 #define MAX_PAGE_SIZE 65025
38 typedef struct OGGPage {
39 int64_t start_granule;
43 uint8_t segments_count;
44 uint8_t segments[255];
45 uint8_t data[MAX_PAGE_SIZE];
49 typedef struct OGGStreamContext {
50 unsigned page_counter;
53 /** for theora granule */
60 unsigned page_count; ///< number of page buffered
61 OGGPage page; ///< current page
62 unsigned serial_num; ///< serial number
63 int64_t last_granule; ///< last packet granule
66 typedef struct OGGPageList {
68 struct OGGPageList *next;
71 typedef struct OGGContext {
73 OGGPageList *page_list;
74 int pref_size; ///< preferred page size (0 => fill all segments)
75 int64_t pref_duration; ///< preferred page duration (0 => fill all segments)
79 #define OFFSET(x) offsetof(OGGContext, x)
80 #define PARAM AV_OPT_FLAG_ENCODING_PARAM
82 static const AVOption options[] = {
83 { "serial_offset", "serial number offset",
84 OFFSET(serial_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, PARAM },
85 { "oggpagesize", "Set preferred Ogg page size.",
86 OFFSET(pref_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, MAX_PAGE_SIZE, PARAM},
87 { "pagesize", "preferred page size in bytes (deprecated)",
88 OFFSET(pref_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, MAX_PAGE_SIZE, PARAM },
89 { "page_duration", "preferred page duration, in microseconds",
90 OFFSET(pref_duration), AV_OPT_TYPE_INT64, { .i64 = 1000000 }, 0, INT64_MAX, PARAM },
94 #define OGG_CLASS(flavor, name)\
95 static const AVClass flavor ## _muxer_class = {\
96 .class_name = #name " muxer",\
97 .item_name = av_default_item_name,\
99 .version = LIBAVUTIL_VERSION_INT,\
102 static void ogg_update_checksum(AVFormatContext *s, AVIOContext *pb, int64_t crc_offset)
104 int64_t pos = avio_tell(pb);
105 uint32_t checksum = ffio_get_checksum(pb);
106 avio_seek(pb, crc_offset, SEEK_SET);
107 avio_wb32(pb, checksum);
108 avio_seek(pb, pos, SEEK_SET);
111 static int ogg_write_page(AVFormatContext *s, OGGPage *page, int extra_flags)
113 OGGStreamContext *oggstream = s->streams[page->stream_index]->priv_data;
119 ret = avio_open_dyn_buf(&pb);
122 ffio_init_checksum(pb, ff_crc04C11DB7_update, 0);
123 ffio_wfourcc(pb, "OggS");
125 avio_w8(pb, page->flags | extra_flags);
126 avio_wl64(pb, page->granule);
127 avio_wl32(pb, oggstream->serial_num);
128 avio_wl32(pb, oggstream->page_counter++);
129 crc_offset = avio_tell(pb);
130 avio_wl32(pb, 0); // crc
131 avio_w8(pb, page->segments_count);
132 avio_write(pb, page->segments, page->segments_count);
133 avio_write(pb, page->data, page->size);
135 ogg_update_checksum(s, pb, crc_offset);
138 size = avio_close_dyn_buf(pb, &buf);
142 avio_write(s->pb, buf, size);
145 oggstream->page_count--;
149 static int ogg_key_granule(OGGStreamContext *oggstream, int64_t granule)
151 return (oggstream->kfgshift && !(granule & ((1<<oggstream->kfgshift)-1))) ||
152 (oggstream->isvp8 && !((granule >> 3) & 0x07ffffff));
155 static int64_t ogg_granule_to_timestamp(OGGStreamContext *oggstream, int64_t granule)
157 if (oggstream->kfgshift)
158 return (granule>>oggstream->kfgshift) +
159 (granule & ((1<<oggstream->kfgshift)-1));
160 else if (oggstream->isvp8)
161 return granule >> 32;
166 static int ogg_compare_granule(AVFormatContext *s, OGGPage *next, OGGPage *page)
168 AVStream *st2 = s->streams[next->stream_index];
169 AVStream *st = s->streams[page->stream_index];
170 int64_t next_granule, cur_granule;
172 if (next->granule == -1 || page->granule == -1)
175 next_granule = av_rescale_q(ogg_granule_to_timestamp(st2->priv_data, next->granule),
176 st2->time_base, AV_TIME_BASE_Q);
177 cur_granule = av_rescale_q(ogg_granule_to_timestamp(st->priv_data, page->granule),
178 st ->time_base, AV_TIME_BASE_Q);
179 return next_granule > cur_granule;
182 static int ogg_reset_cur_page(OGGStreamContext *oggstream)
184 oggstream->page.granule = -1;
185 oggstream->page.flags = 0;
186 oggstream->page.segments_count = 0;
187 oggstream->page.size = 0;
191 static int ogg_buffer_page(AVFormatContext *s, OGGStreamContext *oggstream)
193 OGGContext *ogg = s->priv_data;
194 OGGPageList **p = &ogg->page_list;
195 OGGPageList *l = av_mallocz(sizeof(*l));
198 return AVERROR(ENOMEM);
199 l->page = oggstream->page;
201 oggstream->page.start_granule = ogg_granule_to_timestamp(oggstream, oggstream->page.granule);
202 oggstream->page_count++;
203 ogg_reset_cur_page(oggstream);
206 if (ogg_compare_granule(s, &(*p)->page, &l->page))
216 static int ogg_buffer_data(AVFormatContext *s, AVStream *st,
217 uint8_t *data, unsigned size, int64_t granule,
220 OGGStreamContext *oggstream = st->priv_data;
221 OGGContext *ogg = s->priv_data;
222 int total_segments = size / 255 + 1;
224 int i, segments, len, flush = 0;
226 // Handles VFR by flushing page because this frame needs to have a timestamp
227 // For theora and VP8, keyframes also need to have a timestamp to correctly mark
228 // them as such, otherwise seeking will not work correctly at the very
229 // least with old libogg versions.
230 // Do not try to flush header packets though, that will create broken files.
231 if ((st->codecpar->codec_id == AV_CODEC_ID_THEORA || st->codecpar->codec_id == AV_CODEC_ID_VP8) && !header &&
232 (ogg_granule_to_timestamp(oggstream, granule) >
233 ogg_granule_to_timestamp(oggstream, oggstream->last_granule) + 1 ||
234 ogg_key_granule(oggstream, granule))) {
235 if (oggstream->page.granule != -1)
236 ogg_buffer_page(s, oggstream);
240 // avoid a continued page
241 if (!header && oggstream->page.size > 0 &&
242 MAX_PAGE_SIZE - oggstream->page.size < size) {
243 ogg_buffer_page(s, oggstream);
246 for (i = 0; i < total_segments; ) {
247 OGGPage *page = &oggstream->page;
249 segments = FFMIN(total_segments - i, 255 - page->segments_count);
251 if (i && !page->segments_count)
252 page->flags |= 1; // continued packet
254 memset(page->segments+page->segments_count, 255, segments - 1);
255 page->segments_count += segments - 1;
257 len = FFMIN(size, segments*255);
258 page->segments[page->segments_count++] = len - (segments-1)*255;
259 memcpy(page->data+page->size, p, len);
265 if (i == total_segments)
266 page->granule = granule;
269 AVStream *st = s->streams[page->stream_index];
271 int64_t start = av_rescale_q(page->start_granule, st->time_base,
273 int64_t next = av_rescale_q(ogg_granule_to_timestamp(oggstream, page->granule),
274 st->time_base, AV_TIME_BASE_Q);
276 if (page->segments_count == 255) {
277 ogg_buffer_page(s, oggstream);
278 } else if (!header) {
279 if ((ogg->pref_size > 0 && page->size >= ogg->pref_size) ||
280 (ogg->pref_duration > 0 && next - start >= ogg->pref_duration)) {
281 ogg_buffer_page(s, oggstream);
287 if (flush && oggstream->page.granule != -1)
288 ogg_buffer_page(s, oggstream);
293 static uint8_t *ogg_write_vorbiscomment(int64_t offset, int bitexact,
294 int *header_len, AVDictionary **m, int framing_bit,
295 AVChapter **chapters, unsigned int nb_chapters)
297 const char *vendor = bitexact ? "ffmpeg" : LIBAVFORMAT_IDENT;
301 ff_metadata_conv(m, ff_vorbiscomment_metadata_conv, NULL);
303 size = offset + ff_vorbiscomment_length(*m, vendor, chapters, nb_chapters) + framing_bit;
306 p = av_mallocz(size);
312 ff_vorbiscomment_write(&p, m, vendor, chapters, nb_chapters);
314 bytestream_put_byte(&p, 1);
320 static int ogg_build_flac_headers(AVCodecParameters *par,
321 OGGStreamContext *oggstream, int bitexact,
326 if (par->extradata_size < FLAC_STREAMINFO_SIZE)
327 return AVERROR(EINVAL);
329 // first packet: STREAMINFO
330 oggstream->header_len[0] = 51;
331 oggstream->header[0] = av_mallocz(51); // per ogg flac specs
332 p = oggstream->header[0];
334 return AVERROR(ENOMEM);
335 bytestream_put_byte(&p, 0x7F);
336 bytestream_put_buffer(&p, "FLAC", 4);
337 bytestream_put_byte(&p, 1); // major version
338 bytestream_put_byte(&p, 0); // minor version
339 bytestream_put_be16(&p, 1); // headers packets without this one
340 bytestream_put_buffer(&p, "fLaC", 4);
341 bytestream_put_byte(&p, 0x00); // streaminfo
342 bytestream_put_be24(&p, 34);
343 bytestream_put_buffer(&p, par->extradata, FLAC_STREAMINFO_SIZE);
345 // second packet: VorbisComment
346 p = ogg_write_vorbiscomment(4, bitexact, &oggstream->header_len[1], m, 0, NULL, 0);
348 return AVERROR(ENOMEM);
349 oggstream->header[1] = p;
350 bytestream_put_byte(&p, 0x84); // last metadata block and vorbis comment
351 bytestream_put_be24(&p, oggstream->header_len[1] - 4);
356 #define SPEEX_HEADER_SIZE 80
358 static int ogg_build_speex_headers(AVCodecParameters *par,
359 OGGStreamContext *oggstream, int bitexact,
364 if (par->extradata_size < SPEEX_HEADER_SIZE)
365 return AVERROR_INVALIDDATA;
367 // first packet: Speex header
368 p = av_mallocz(SPEEX_HEADER_SIZE);
370 return AVERROR(ENOMEM);
371 oggstream->header[0] = p;
372 oggstream->header_len[0] = SPEEX_HEADER_SIZE;
373 bytestream_put_buffer(&p, par->extradata, SPEEX_HEADER_SIZE);
374 AV_WL32(&oggstream->header[0][68], 0); // set extra_headers to 0
376 // second packet: VorbisComment
377 p = ogg_write_vorbiscomment(0, bitexact, &oggstream->header_len[1], m, 0, NULL, 0);
379 return AVERROR(ENOMEM);
380 oggstream->header[1] = p;
385 #define OPUS_HEADER_SIZE 19
387 static int ogg_build_opus_headers(AVCodecParameters *par,
388 OGGStreamContext *oggstream, int bitexact,
389 AVDictionary **m, AVChapter **chapters,
390 unsigned int nb_chapters)
394 if (par->extradata_size < OPUS_HEADER_SIZE)
395 return AVERROR_INVALIDDATA;
397 /* first packet: Opus header */
398 p = av_mallocz(par->extradata_size);
400 return AVERROR(ENOMEM);
401 oggstream->header[0] = p;
402 oggstream->header_len[0] = par->extradata_size;
403 bytestream_put_buffer(&p, par->extradata, par->extradata_size);
405 /* second packet: VorbisComment */
406 p = ogg_write_vorbiscomment(8, bitexact, &oggstream->header_len[1], m, 0, chapters, nb_chapters);
408 return AVERROR(ENOMEM);
409 oggstream->header[1] = p;
410 bytestream_put_buffer(&p, "OpusTags", 8);
415 #define VP8_HEADER_SIZE 26
417 static int ogg_build_vp8_headers(AVFormatContext *s, AVStream *st,
418 OGGStreamContext *oggstream, int bitexact)
420 AVCodecParameters *par = st->codecpar;
423 /* first packet: VP8 header */
424 p = av_mallocz(VP8_HEADER_SIZE);
426 return AVERROR(ENOMEM);
427 oggstream->header[0] = p;
428 oggstream->header_len[0] = VP8_HEADER_SIZE;
429 bytestream_put_byte(&p, 0x4f); // HDRID
430 bytestream_put_buffer(&p, "VP80", 4); // Identifier
431 bytestream_put_byte(&p, 1); // HDRTYP
432 bytestream_put_byte(&p, 1); // VMAJ
433 bytestream_put_byte(&p, 0); // VMIN
434 bytestream_put_be16(&p, par->width);
435 bytestream_put_be16(&p, par->height);
436 bytestream_put_be24(&p, par->sample_aspect_ratio.num);
437 bytestream_put_be24(&p, par->sample_aspect_ratio.den);
438 if (st->r_frame_rate.num > 0 && st->r_frame_rate.den > 0) {
439 // OggVP8 requires pts to increase by 1 per visible frame, so use the least common
440 // multiple framerate if available.
441 av_log(s, AV_LOG_DEBUG, "Changing time base from %d/%d to %d/%d\n",
442 st->time_base.num, st->time_base.den,
443 st->r_frame_rate.den, st->r_frame_rate.num);
444 avpriv_set_pts_info(st, 64, st->r_frame_rate.den, st->r_frame_rate.num);
446 bytestream_put_be32(&p, st->time_base.den);
447 bytestream_put_be32(&p, st->time_base.num);
449 /* optional second packet: VorbisComment */
450 if (av_dict_get(st->metadata, "", NULL, AV_DICT_IGNORE_SUFFIX)) {
451 p = ogg_write_vorbiscomment(7, bitexact, &oggstream->header_len[1], &st->metadata, 0, NULL, 0);
453 return AVERROR(ENOMEM);
454 oggstream->header[1] = p;
455 bytestream_put_byte(&p, 0x4f); // HDRID
456 bytestream_put_buffer(&p, "VP80", 4); // Identifier
457 bytestream_put_byte(&p, 2); // HDRTYP
458 bytestream_put_byte(&p, 0x20);
461 oggstream->isvp8 = 1;
466 static void ogg_write_pages(AVFormatContext *s, int flush)
468 OGGContext *ogg = s->priv_data;
469 OGGPageList *next, *p;
474 for (p = ogg->page_list; p; ) {
475 OGGStreamContext *oggstream =
476 s->streams[p->page.stream_index]->priv_data;
477 if (oggstream->page_count < 2 && !flush)
479 ogg_write_page(s, &p->page,
480 flush == 1 && oggstream->page_count == 1 ? 4 : 0); // eos
488 static int ogg_init(AVFormatContext *s)
490 OGGContext *ogg = s->priv_data;
491 OGGStreamContext *oggstream = NULL;
495 av_log(s, AV_LOG_WARNING, "The pagesize option is deprecated\n");
497 for (i = 0; i < s->nb_streams; i++) {
498 AVStream *st = s->streams[i];
499 unsigned serial_num = i + ogg->serial_offset;
501 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
502 if (st->codecpar->codec_id == AV_CODEC_ID_OPUS)
503 /* Opus requires a fixed 48kHz clock */
504 avpriv_set_pts_info(st, 64, 1, 48000);
506 avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
509 if (st->codecpar->codec_id != AV_CODEC_ID_VORBIS &&
510 st->codecpar->codec_id != AV_CODEC_ID_THEORA &&
511 st->codecpar->codec_id != AV_CODEC_ID_SPEEX &&
512 st->codecpar->codec_id != AV_CODEC_ID_FLAC &&
513 st->codecpar->codec_id != AV_CODEC_ID_OPUS &&
514 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);
519 if ((!st->codecpar->extradata || !st->codecpar->extradata_size) &&
520 st->codecpar->codec_id != AV_CODEC_ID_VP8) {
521 av_log(s, AV_LOG_ERROR, "No extradata present\n");
522 return AVERROR_INVALIDDATA;
524 oggstream = av_mallocz(sizeof(*oggstream));
526 return AVERROR(ENOMEM);
528 oggstream->page.stream_index = i;
530 if (!(s->flags & AVFMT_FLAG_BITEXACT))
532 serial_num = av_get_random_seed();
533 for (j = 0; j < i; j++) {
534 OGGStreamContext *sc = s->streams[j]->priv_data;
535 if (serial_num == sc->serial_num)
539 oggstream->serial_num = serial_num;
541 av_dict_copy(&st->metadata, s->metadata, AV_DICT_DONT_OVERWRITE);
543 st->priv_data = oggstream;
544 if (st->codecpar->codec_id == AV_CODEC_ID_FLAC) {
545 int err = ogg_build_flac_headers(st->codecpar, oggstream,
546 s->flags & AVFMT_FLAG_BITEXACT,
549 av_log(s, AV_LOG_ERROR, "Error writing FLAC headers\n");
550 av_freep(&st->priv_data);
553 } else if (st->codecpar->codec_id == AV_CODEC_ID_SPEEX) {
554 int err = ogg_build_speex_headers(st->codecpar, oggstream,
555 s->flags & AVFMT_FLAG_BITEXACT,
558 av_log(s, AV_LOG_ERROR, "Error writing Speex headers\n");
559 av_freep(&st->priv_data);
562 } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
563 int err = ogg_build_opus_headers(st->codecpar, oggstream,
564 s->flags & AVFMT_FLAG_BITEXACT,
565 &st->metadata, s->chapters, s->nb_chapters);
567 av_log(s, AV_LOG_ERROR, "Error writing Opus headers\n");
568 av_freep(&st->priv_data);
571 } else if (st->codecpar->codec_id == AV_CODEC_ID_VP8) {
572 int err = ogg_build_vp8_headers(s, st, oggstream,
573 s->flags & AVFMT_FLAG_BITEXACT);
575 av_log(s, AV_LOG_ERROR, "Error writing VP8 headers\n");
576 av_freep(&st->priv_data);
581 const char *cstr = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? "vorbis" : "theora";
582 int header_type = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 3 : 0x81;
583 int framing_bit = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 1 : 0;
585 if (avpriv_split_xiph_headers(st->codecpar->extradata, st->codecpar->extradata_size,
586 st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 30 : 42,
587 (const uint8_t**)oggstream->header, oggstream->header_len) < 0) {
588 av_log(s, AV_LOG_ERROR, "Extradata corrupted\n");
589 av_freep(&st->priv_data);
590 return AVERROR_INVALIDDATA;
593 p = ogg_write_vorbiscomment(7, s->flags & AVFMT_FLAG_BITEXACT,
594 &oggstream->header_len[1], &st->metadata,
595 framing_bit, NULL, 0);
596 oggstream->header[1] = p;
598 return AVERROR(ENOMEM);
600 bytestream_put_byte(&p, header_type);
601 bytestream_put_buffer(&p, cstr, 6);
603 if (st->codecpar->codec_id == AV_CODEC_ID_THEORA) {
604 int den = AV_RB32(oggstream->header[0] + 22), num = AV_RB32(oggstream->header[0] + 26);
605 /* Make sure to use time base stored in the Theora stream header to write
606 correct timestamps */
607 if (st->time_base.num != num || st->time_base.den != den) {
608 av_log(s, AV_LOG_DEBUG, "Changing time base from %d/%d to %d/%d\n",
609 st->time_base.num, st->time_base.den, num, den);
610 avpriv_set_pts_info(st, 64, num, den);
612 /** KFGSHIFT is the width of the less significant section of the granule position
613 The less significant section is the frame count since the last keyframe */
614 oggstream->kfgshift = ((oggstream->header[0][40]&3)<<3)|(oggstream->header[0][41]>>5);
615 oggstream->vrev = oggstream->header[0][9];
616 av_log(s, AV_LOG_DEBUG, "theora kfgshift %d, vrev %d\n",
617 oggstream->kfgshift, oggstream->vrev);
625 static int ogg_write_header(AVFormatContext *s)
627 OGGStreamContext *oggstream = NULL;
630 for (j = 0; j < s->nb_streams; j++) {
631 oggstream = s->streams[j]->priv_data;
632 ogg_buffer_data(s, s->streams[j], oggstream->header[0],
633 oggstream->header_len[0], 0, 1);
634 oggstream->page.flags |= 2; // bos
635 ogg_buffer_page(s, oggstream);
637 for (j = 0; j < s->nb_streams; j++) {
638 AVStream *st = s->streams[j];
639 oggstream = st->priv_data;
640 for (i = 1; i < 3; i++) {
641 if (oggstream->header_len[i])
642 ogg_buffer_data(s, st, oggstream->header[i],
643 oggstream->header_len[i], 0, 1);
645 ogg_buffer_page(s, oggstream);
648 oggstream->page.start_granule = AV_NOPTS_VALUE;
650 ogg_write_pages(s, 2);
655 static int ogg_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
657 AVStream *st = s->streams[pkt->stream_index];
658 OGGStreamContext *oggstream = st->priv_data;
662 if (st->codecpar->codec_id == AV_CODEC_ID_THEORA) {
663 int64_t pts = oggstream->vrev < 1 ? pkt->pts : pkt->pts + pkt->duration;
665 if (pkt->flags & AV_PKT_FLAG_KEY)
666 oggstream->last_kf_pts = pts;
667 pframe_count = pts - oggstream->last_kf_pts;
668 // prevent frame count from overflow if key frame flag is not set
669 if (pframe_count >= (1<<oggstream->kfgshift)) {
670 oggstream->last_kf_pts += pframe_count;
673 granule = (oggstream->last_kf_pts<<oggstream->kfgshift) | pframe_count;
674 } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS)
675 granule = pkt->pts + pkt->duration +
676 av_rescale_q(st->codecpar->initial_padding,
677 (AVRational){ 1, st->codecpar->sample_rate },
679 else if (st->codecpar->codec_id == AV_CODEC_ID_VP8) {
680 int64_t pts, invcnt, dist;
683 visible = (pkt->data[0] >> 4) & 1;
684 pts = pkt->pts + pkt->duration;
685 invcnt = (oggstream->last_granule >> 30) & 3;
686 invcnt = visible ? 3 : (invcnt == 3 ? 0 : invcnt + 1);
687 dist = (pkt->flags & AV_PKT_FLAG_KEY) ? 0 : ((oggstream->last_granule >> 3) & 0x07ffffff) + 1;
689 granule = (pts << 32) | (invcnt << 30) | (dist << 3);
691 granule = pkt->pts + pkt->duration;
693 if (oggstream->page.start_granule == AV_NOPTS_VALUE)
694 oggstream->page.start_granule = pkt->pts;
696 ret = ogg_buffer_data(s, st, pkt->data, pkt->size, granule, 0);
700 ogg_write_pages(s, 0);
702 oggstream->last_granule = granule;
707 static int ogg_write_packet(AVFormatContext *s, AVPacket *pkt)
712 return ogg_write_packet_internal(s, pkt);
714 for (i = 0; i < s->nb_streams; i++) {
715 OGGStreamContext *oggstream = s->streams[i]->priv_data;
716 if (oggstream->page.segments_count)
717 ogg_buffer_page(s, oggstream);
720 ogg_write_pages(s, 2);
724 static int ogg_write_trailer(AVFormatContext *s)
728 /* flush current page if needed */
729 for (i = 0; i < s->nb_streams; i++) {
730 OGGStreamContext *oggstream = s->streams[i]->priv_data;
732 if (oggstream->page.size > 0)
733 ogg_buffer_page(s, oggstream);
736 ogg_write_pages(s, 1);
741 static void ogg_free(AVFormatContext *s)
745 for (i = 0; i < s->nb_streams; i++) {
746 AVStream *st = s->streams[i];
747 OGGStreamContext *oggstream = st->priv_data;
750 if (st->codecpar->codec_id == AV_CODEC_ID_FLAC ||
751 st->codecpar->codec_id == AV_CODEC_ID_SPEEX ||
752 st->codecpar->codec_id == AV_CODEC_ID_OPUS ||
753 st->codecpar->codec_id == AV_CODEC_ID_VP8) {
754 av_freep(&oggstream->header[0]);
756 av_freep(&oggstream->header[1]);
757 av_freep(&st->priv_data);
763 AVOutputFormat ff_ogg_muxer = {
765 .long_name = NULL_IF_CONFIG_SMALL("Ogg"),
766 .mime_type = "application/ogg",
768 #if !CONFIG_OGV_MUXER
771 #if !CONFIG_SPX_MUXER
774 #if !CONFIG_OPUS_MUXER
778 .priv_data_size = sizeof(OGGContext),
779 .audio_codec = CONFIG_LIBVORBIS_ENCODER ?
780 AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
781 .video_codec = AV_CODEC_ID_THEORA,
783 .write_header = ogg_write_header,
784 .write_packet = ogg_write_packet,
785 .write_trailer = ogg_write_trailer,
787 .flags = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH,
788 .priv_class = &ogg_muxer_class,
793 OGG_CLASS(oga, Ogg audio)
794 AVOutputFormat ff_oga_muxer = {
796 .long_name = NULL_IF_CONFIG_SMALL("Ogg Audio"),
797 .mime_type = "audio/ogg",
799 .priv_data_size = sizeof(OGGContext),
800 .audio_codec = AV_CODEC_ID_FLAC,
802 .write_header = ogg_write_header,
803 .write_packet = ogg_write_packet,
804 .write_trailer = ogg_write_trailer,
806 .flags = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
807 .priv_class = &oga_muxer_class,
812 OGG_CLASS(ogv, Ogg video)
813 AVOutputFormat ff_ogv_muxer = {
815 .long_name = NULL_IF_CONFIG_SMALL("Ogg Video"),
816 .mime_type = "video/ogg",
818 .priv_data_size = sizeof(OGGContext),
819 .audio_codec = CONFIG_LIBVORBIS_ENCODER ?
820 AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
821 .video_codec = CONFIG_LIBTHEORA_ENCODER ?
822 AV_CODEC_ID_THEORA : AV_CODEC_ID_VP8,
824 .write_header = ogg_write_header,
825 .write_packet = ogg_write_packet,
826 .write_trailer = ogg_write_trailer,
828 .flags = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH,
829 .priv_class = &ogv_muxer_class,
834 OGG_CLASS(spx, Ogg Speex)
835 AVOutputFormat ff_spx_muxer = {
837 .long_name = NULL_IF_CONFIG_SMALL("Ogg Speex"),
838 .mime_type = "audio/ogg",
840 .priv_data_size = sizeof(OGGContext),
841 .audio_codec = AV_CODEC_ID_SPEEX,
843 .write_header = ogg_write_header,
844 .write_packet = ogg_write_packet,
845 .write_trailer = ogg_write_trailer,
847 .flags = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
848 .priv_class = &spx_muxer_class,
852 #if CONFIG_OPUS_MUXER
853 OGG_CLASS(opus, Ogg Opus)
854 AVOutputFormat ff_opus_muxer = {
856 .long_name = NULL_IF_CONFIG_SMALL("Ogg Opus"),
857 .mime_type = "audio/ogg",
858 .extensions = "opus",
859 .priv_data_size = sizeof(OGGContext),
860 .audio_codec = AV_CODEC_ID_OPUS,
862 .write_header = ogg_write_header,
863 .write_packet = ogg_write_packet,
864 .write_trailer = ogg_write_trailer,
866 .flags = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
867 .priv_class = &opus_muxer_class,