2005-04-09 15:32:58 +00:00
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/*
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* Ogg bitstream support
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* Luca Barbato <lu_zero@gentoo.org>
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* Based on tcvp implementation
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*/
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2011-10-30 18:10:50 +00:00
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/*
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2005-04-09 15:32:58 +00:00
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Copyright (C) 2005 Michael Ahlberg, Måns Rullgård
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation
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files (the "Software"), to deal in the Software without
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restriction, including without limitation the rights to use, copy,
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modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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2011-10-30 18:10:50 +00:00
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*/
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2005-04-09 15:32:58 +00:00
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#include <stdio.h>
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2012-04-17 12:44:06 +00:00
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#include "libavutil/avassert.h"
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2013-09-12 17:24:18 +00:00
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#include "libavutil/intreadwrite.h"
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2007-11-07 20:22:32 +00:00
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#include "oggdec.h"
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2005-04-09 15:32:58 +00:00
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#include "avformat.h"
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2011-10-16 13:03:30 +00:00
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#include "internal.h"
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2010-03-20 13:36:43 +00:00
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#include "vorbiscomment.h"
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2005-04-09 15:32:58 +00:00
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#define MAX_PAGE_SIZE 65307
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#define DECODER_BUFFER_SIZE MAX_PAGE_SIZE
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2008-11-06 01:50:56 +00:00
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static const struct ogg_codec * const ogg_codecs[] = {
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2010-03-11 07:17:40 +00:00
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&ff_skeleton_codec,
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lavf: add oggparsedaala and bump micro
This commit introduces a parser for the current bitstream produced by
Daala. It currently bears a large similarity with Theora, another
codec produced by Xiph. While likely to change in the future, its basic
format of packet parsing should remain fairly identical with its current
structure.
Once the bitstream freezes, there are a few probable simplifications
that could be made. Also, the current version (major, minor and micro)
is stuck at zero so it's unusable as a way to warn about possible
incompatibilities. This will change once the bitstream freezes,
however until then this file is strictly targeting the current git
master of the reference encoder, libdaala.
This file was developed independently at the same time by both myself
and Vittorio Giovara, who used libav as a starting point. For fairness,
and to prevent confusion and allegations, his name has been added to the
copyright in the license header as well, and vice versa.
2015-10-21 04:56:21 +00:00
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&ff_daala_codec,
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2010-01-11 00:31:52 +00:00
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&ff_dirac_codec,
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2008-08-24 17:37:43 +00:00
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&ff_speex_codec,
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&ff_vorbis_codec,
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&ff_theora_codec,
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&ff_flac_codec,
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2011-04-15 17:18:04 +00:00
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&ff_celt_codec,
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2012-06-24 09:38:18 +00:00
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&ff_opus_codec,
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2013-12-25 05:48:34 +00:00
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&ff_vp8_codec,
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2010-01-11 00:31:52 +00:00
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&ff_old_dirac_codec,
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2008-08-24 17:37:43 +00:00
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&ff_old_flac_codec,
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&ff_ogm_video_codec,
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&ff_ogm_audio_codec,
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&ff_ogm_text_codec,
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&ff_ogm_old_codec,
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2005-04-09 15:32:58 +00:00
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NULL
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};
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2012-05-14 12:07:09 +00:00
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static int64_t ogg_calc_pts(AVFormatContext *s, int idx, int64_t *dts);
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2013-01-16 18:58:59 +00:00
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static int ogg_new_stream(AVFormatContext *s, uint32_t serial);
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2017-02-28 12:36:29 +00:00
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static int ogg_restore(AVFormatContext *s);
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2012-05-14 12:07:09 +00:00
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2017-02-28 14:16:23 +00:00
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static void free_stream(AVFormatContext *s, int i)
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{
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struct ogg *ogg = s->priv_data;
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struct ogg_stream *stream = &ogg->streams[i];
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av_freep(&stream->buf);
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if (stream->codec &&
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stream->codec->cleanup) {
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stream->codec->cleanup(s, i);
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}
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av_freep(&stream->private);
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av_freep(&stream->new_metadata);
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}
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2005-04-09 15:32:58 +00:00
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//FIXME We could avoid some structure duplication
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2011-05-11 18:43:29 +00:00
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static int ogg_save(AVFormatContext *s)
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2005-04-09 15:32:58 +00:00
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{
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2008-11-06 01:50:56 +00:00
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struct ogg *ogg = s->priv_data;
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struct ogg_state *ost =
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2012-12-21 18:12:41 +00:00
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av_malloc(sizeof(*ost) + (ogg->nstreams - 1) * sizeof(*ogg->streams));
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2005-04-09 15:32:58 +00:00
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int i;
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2015-07-13 19:44:26 +00:00
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int ret = 0;
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2015-02-22 17:54:10 +00:00
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if (!ost)
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return AVERROR(ENOMEM);
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2012-12-21 18:12:41 +00:00
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ost->pos = avio_tell(s->pb);
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ost->curidx = ogg->curidx;
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ost->next = ogg->state;
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2007-01-15 22:05:22 +00:00
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ost->nstreams = ogg->nstreams;
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2005-04-09 15:32:58 +00:00
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memcpy(ost->streams, ogg->streams, ogg->nstreams * sizeof(*ogg->streams));
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2012-12-21 18:12:41 +00:00
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for (i = 0; i < ogg->nstreams; i++) {
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2008-11-06 01:50:56 +00:00
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struct ogg_stream *os = ogg->streams + i;
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2015-06-29 21:48:34 +00:00
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os->buf = av_mallocz(os->bufsize + AV_INPUT_BUFFER_PADDING_SIZE);
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2015-07-13 19:44:26 +00:00
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if (os->buf)
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memcpy(os->buf, ost->streams[i].buf, os->bufpos);
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else
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ret = AVERROR(ENOMEM);
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2014-02-05 17:10:54 +00:00
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os->new_metadata = NULL;
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os->new_metadata_size = 0;
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2005-04-09 15:32:58 +00:00
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}
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ogg->state = ost;
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2015-07-13 19:44:26 +00:00
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if (ret < 0)
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2017-02-28 12:36:29 +00:00
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ogg_restore(s);
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2015-07-13 19:44:26 +00:00
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return ret;
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2005-04-09 15:32:58 +00:00
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}
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2017-02-28 12:36:29 +00:00
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static int ogg_restore(AVFormatContext *s)
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2005-04-09 15:32:58 +00:00
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{
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2008-11-06 01:50:56 +00:00
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struct ogg *ogg = s->priv_data;
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2011-02-20 10:04:12 +00:00
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AVIOContext *bc = s->pb;
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2008-11-06 01:50:56 +00:00
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struct ogg_state *ost = ogg->state;
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2013-09-10 09:57:35 +00:00
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int i, err;
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2005-04-09 15:32:58 +00:00
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if (!ost)
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return 0;
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ogg->state = ost->next;
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2017-02-28 14:16:54 +00:00
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for (i = 0; i < ogg->nstreams; i++) {
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2013-10-19 20:50:16 +00:00
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av_freep(&ogg->streams[i].buf);
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2017-02-28 14:16:54 +00:00
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if (i >= ost->nstreams || !ost->streams[i].private) {
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free_stream(s, i);
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}
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}
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2005-04-09 15:32:58 +00:00
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2012-12-21 18:12:41 +00:00
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avio_seek(bc, ost->pos, SEEK_SET);
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2013-01-13 20:23:11 +00:00
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ogg->page_pos = -1;
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2012-12-21 18:12:41 +00:00
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ogg->curidx = ost->curidx;
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2007-01-15 22:05:22 +00:00
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ogg->nstreams = ost->nstreams;
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2013-09-10 09:57:35 +00:00
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if ((err = av_reallocp_array(&ogg->streams, ogg->nstreams,
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sizeof(*ogg->streams))) < 0) {
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ogg->nstreams = 0;
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return err;
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} else
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2011-09-11 21:37:44 +00:00
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memcpy(ogg->streams, ost->streams,
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ost->nstreams * sizeof(*ogg->streams));
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2005-04-09 15:32:58 +00:00
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2012-12-21 18:12:41 +00:00
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av_free(ost);
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2005-04-09 15:32:58 +00:00
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return 0;
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}
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2012-05-04 11:44:28 +00:00
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static int ogg_reset(AVFormatContext *s)
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2005-04-09 15:32:58 +00:00
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{
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2012-05-04 11:44:28 +00:00
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struct ogg *ogg = s->priv_data;
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2005-04-09 15:32:58 +00:00
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int i;
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2012-05-04 11:45:51 +00:00
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int64_t start_pos = avio_tell(s->pb);
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2005-04-09 15:32:58 +00:00
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2012-12-21 18:12:41 +00:00
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for (i = 0; i < ogg->nstreams; i++) {
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2008-11-06 01:50:56 +00:00
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struct ogg_stream *os = ogg->streams + i;
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2012-12-21 18:12:41 +00:00
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os->bufpos = 0;
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os->pstart = 0;
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os->psize = 0;
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os->granule = -1;
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os->lastpts = AV_NOPTS_VALUE;
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os->lastdts = AV_NOPTS_VALUE;
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os->sync_pos = -1;
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os->page_pos = 0;
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os->nsegs = 0;
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os->segp = 0;
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2010-02-08 10:13:03 +00:00
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os->incomplete = 0;
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2012-09-16 20:24:11 +00:00
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os->got_data = 0;
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2015-02-11 01:13:46 +00:00
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if (start_pos <= s->internal->data_offset) {
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2012-05-04 11:45:51 +00:00
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os->lastpts = 0;
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}
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2013-12-12 04:31:43 +00:00
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os->end_trimming = 0;
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2014-02-05 17:10:54 +00:00
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av_freep(&os->new_metadata);
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os->new_metadata_size = 0;
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2005-04-09 15:32:58 +00:00
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}
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2013-01-13 20:23:11 +00:00
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ogg->page_pos = -1;
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2005-04-09 15:32:58 +00:00
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ogg->curidx = -1;
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return 0;
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}
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2011-05-11 18:43:29 +00:00
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static const struct ogg_codec *ogg_find_codec(uint8_t *buf, int size)
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2005-04-09 15:32:58 +00:00
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{
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int i;
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for (i = 0; ogg_codecs[i]; i++)
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if (size >= ogg_codecs[i]->magicsize &&
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2012-12-21 18:12:41 +00:00
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!memcmp(buf, ogg_codecs[i]->magic, ogg_codecs[i]->magicsize))
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2005-04-09 15:32:58 +00:00
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return ogg_codecs[i];
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return NULL;
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}
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2012-09-14 22:41:08 +00:00
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/**
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* Replace the current stream with a new one. This is a typical webradio
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* situation where a new audio stream spawn (identified with a new serial) and
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* must replace the previous one (track switch).
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*/
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2013-01-16 18:58:59 +00:00
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static int ogg_replace_stream(AVFormatContext *s, uint32_t serial, int nsegs)
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2005-04-09 15:32:58 +00:00
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{
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2012-09-14 22:41:08 +00:00
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struct ogg *ogg = s->priv_data;
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struct ogg_stream *os;
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2012-12-24 21:37:24 +00:00
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const struct ogg_codec *codec;
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2013-01-16 18:58:59 +00:00
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int i = 0;
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2017-03-21 20:02:30 +00:00
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if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
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2013-01-16 18:58:59 +00:00
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uint8_t magic[8];
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int64_t pos = avio_tell(s->pb);
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avio_skip(s->pb, nsegs);
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avio_read(s->pb, magic, sizeof(magic));
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avio_seek(s->pb, pos, SEEK_SET);
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codec = ogg_find_codec(magic, sizeof(magic));
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if (!codec) {
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av_log(s, AV_LOG_ERROR, "Cannot identify new stream\n");
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return AVERROR_INVALIDDATA;
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}
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for (i = 0; i < ogg->nstreams; i++) {
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if (ogg->streams[i].codec == codec)
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break;
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}
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if (i >= ogg->nstreams)
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return ogg_new_stream(s, serial);
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} else if (ogg->nstreams != 1) {
|
2013-03-15 17:13:52 +00:00
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avpriv_report_missing_feature(s, "Changing stream parameters in multistream ogg");
|
2012-09-14 22:41:08 +00:00
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return AVERROR_PATCHWELCOME;
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}
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2013-01-16 18:58:59 +00:00
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os = &ogg->streams[i];
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2012-09-14 22:41:08 +00:00
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2013-01-13 20:32:34 +00:00
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os->serial = serial;
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2013-01-16 18:58:59 +00:00
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return i;
|
2013-01-13 20:32:34 +00:00
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2013-01-20 16:50:17 +00:00
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#if 0
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2012-12-24 13:43:03 +00:00
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buf = os->buf;
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2012-09-14 22:41:08 +00:00
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bufsize = os->bufsize;
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2012-12-05 03:38:57 +00:00
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codec = os->codec;
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2012-09-14 22:41:08 +00:00
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2013-01-16 18:58:59 +00:00
|
|
|
if (!ogg->state || ogg->state->streams[i].private != os->private)
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av_freep(&ogg->streams[i].private);
|
2012-09-14 22:41:08 +00:00
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/* Set Ogg stream settings similar to what is done in ogg_new_stream(). We
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* also re-use the ogg_stream allocated buffer */
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memset(os, 0, sizeof(*os));
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2012-12-24 13:43:03 +00:00
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os->serial = serial;
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2012-09-14 22:41:08 +00:00
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os->bufsize = bufsize;
|
2012-12-24 13:43:03 +00:00
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os->buf = buf;
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os->header = -1;
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os->codec = codec;
|
2012-09-14 22:41:08 +00:00
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2013-01-16 18:58:59 +00:00
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return i;
|
2013-01-20 16:50:17 +00:00
|
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|
#endif
|
2012-09-14 22:41:08 +00:00
|
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}
|
2005-04-09 15:32:58 +00:00
|
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|
2012-09-14 22:41:08 +00:00
|
|
|
static int ogg_new_stream(AVFormatContext *s, uint32_t serial)
|
|
|
|
{
|
2008-11-06 01:50:56 +00:00
|
|
|
struct ogg *ogg = s->priv_data;
|
2012-12-24 13:43:03 +00:00
|
|
|
int idx = ogg->nstreams;
|
2005-04-09 15:32:58 +00:00
|
|
|
AVStream *st;
|
2008-11-06 01:50:56 +00:00
|
|
|
struct ogg_stream *os;
|
2012-09-14 21:51:30 +00:00
|
|
|
size_t size;
|
2005-04-09 15:32:58 +00:00
|
|
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|
2012-09-16 20:24:11 +00:00
|
|
|
if (ogg->state) {
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|
av_log(s, AV_LOG_ERROR, "New streams are not supposed to be added "
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|
|
|
"in between Ogg context save/restore operations.\n");
|
|
|
|
return AVERROR_BUG;
|
|
|
|
}
|
|
|
|
|
2012-09-14 22:42:25 +00:00
|
|
|
/* Allocate and init a new Ogg Stream */
|
2012-09-14 21:51:30 +00:00
|
|
|
if (av_size_mult(ogg->nstreams + 1, sizeof(*ogg->streams), &size) < 0 ||
|
|
|
|
!(os = av_realloc(ogg->streams, size)))
|
|
|
|
return AVERROR(ENOMEM);
|
2012-12-24 14:09:58 +00:00
|
|
|
ogg->streams = os;
|
|
|
|
os = ogg->streams + idx;
|
2012-09-14 21:54:19 +00:00
|
|
|
memset(os, 0, sizeof(*os));
|
2012-12-21 18:12:41 +00:00
|
|
|
os->serial = serial;
|
|
|
|
os->bufsize = DECODER_BUFFER_SIZE;
|
2015-06-29 21:48:34 +00:00
|
|
|
os->buf = av_malloc(os->bufsize + AV_INPUT_BUFFER_PADDING_SIZE);
|
2012-12-21 18:12:41 +00:00
|
|
|
os->header = -1;
|
2012-09-19 23:07:09 +00:00
|
|
|
os->start_granule = OGG_NOGRANULE_VALUE;
|
2012-09-14 21:51:30 +00:00
|
|
|
if (!os->buf)
|
|
|
|
return AVERROR(ENOMEM);
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2012-09-14 22:42:25 +00:00
|
|
|
/* Create the associated AVStream */
|
|
|
|
st = avformat_new_stream(s, NULL);
|
|
|
|
if (!st) {
|
|
|
|
av_freep(&os->buf);
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
}
|
|
|
|
st->id = idx;
|
|
|
|
avpriv_set_pts_info(st, 64, 1, 1000000);
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2012-09-14 21:51:30 +00:00
|
|
|
ogg->nstreams++;
|
2005-04-09 15:32:58 +00:00
|
|
|
return idx;
|
|
|
|
}
|
|
|
|
|
2011-05-11 18:43:29 +00:00
|
|
|
static int ogg_new_buf(struct ogg *ogg, int idx)
|
2006-06-25 00:41:13 +00:00
|
|
|
{
|
2008-11-06 01:50:56 +00:00
|
|
|
struct ogg_stream *os = ogg->streams + idx;
|
2015-06-29 21:48:34 +00:00
|
|
|
uint8_t *nb = av_malloc(os->bufsize + AV_INPUT_BUFFER_PADDING_SIZE);
|
2006-06-25 00:41:13 +00:00
|
|
|
int size = os->bufpos - os->pstart;
|
2012-12-21 18:12:41 +00:00
|
|
|
|
2015-02-22 16:52:59 +00:00
|
|
|
if (!nb)
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
|
2012-12-21 18:12:41 +00:00
|
|
|
if (os->buf) {
|
2006-06-25 00:41:13 +00:00
|
|
|
memcpy(nb, os->buf + os->pstart, size);
|
|
|
|
av_free(os->buf);
|
|
|
|
}
|
2012-12-21 18:12:41 +00:00
|
|
|
|
|
|
|
os->buf = nb;
|
2006-06-25 00:41:13 +00:00
|
|
|
os->bufpos = size;
|
|
|
|
os->pstart = 0;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-09-16 20:24:11 +00:00
|
|
|
static int data_packets_seen(const struct ogg *ogg)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < ogg->nstreams; i++)
|
|
|
|
if (ogg->streams[i].got_data)
|
|
|
|
return 1;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-09-14 21:10:38 +00:00
|
|
|
static int ogg_read_page(AVFormatContext *s, int *sid)
|
2005-04-09 15:32:58 +00:00
|
|
|
{
|
2011-02-20 10:04:12 +00:00
|
|
|
AVIOContext *bc = s->pb;
|
2008-11-06 01:50:56 +00:00
|
|
|
struct ogg *ogg = s->priv_data;
|
|
|
|
struct ogg_stream *os;
|
2011-04-15 15:08:12 +00:00
|
|
|
int ret, i = 0;
|
2005-04-09 15:32:58 +00:00
|
|
|
int flags, nsegs;
|
|
|
|
uint64_t gp;
|
|
|
|
uint32_t serial;
|
|
|
|
int size, idx;
|
2006-09-27 19:47:39 +00:00
|
|
|
uint8_t sync[4];
|
2005-04-09 15:32:58 +00:00
|
|
|
int sp = 0;
|
|
|
|
|
2011-06-24 10:02:41 +00:00
|
|
|
ret = avio_read(bc, sync, 4);
|
2011-04-15 15:08:12 +00:00
|
|
|
if (ret < 4)
|
|
|
|
return ret < 0 ? ret : AVERROR_EOF;
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2012-12-21 18:12:41 +00:00
|
|
|
do {
|
2005-04-09 15:32:58 +00:00
|
|
|
int c;
|
|
|
|
|
|
|
|
if (sync[sp & 3] == 'O' &&
|
|
|
|
sync[(sp + 1) & 3] == 'g' &&
|
|
|
|
sync[(sp + 2) & 3] == 'g' && sync[(sp + 3) & 3] == 'S')
|
|
|
|
break;
|
|
|
|
|
2017-03-21 20:02:30 +00:00
|
|
|
if(!i && (bc->seekable & AVIO_SEEKABLE_NORMAL) && ogg->page_pos > 0) {
|
2013-01-13 20:23:11 +00:00
|
|
|
memset(sync, 0, 4);
|
|
|
|
avio_seek(bc, ogg->page_pos+4, SEEK_SET);
|
|
|
|
ogg->page_pos = -1;
|
|
|
|
}
|
|
|
|
|
2011-03-06 18:59:29 +00:00
|
|
|
c = avio_r8(bc);
|
2012-12-21 18:12:41 +00:00
|
|
|
|
2014-08-07 20:12:41 +00:00
|
|
|
if (avio_feof(bc))
|
2011-04-15 15:08:12 +00:00
|
|
|
return AVERROR_EOF;
|
2012-12-21 18:12:41 +00:00
|
|
|
|
2005-04-09 15:32:58 +00:00
|
|
|
sync[sp++ & 3] = c;
|
2012-12-21 18:12:41 +00:00
|
|
|
} while (i++ < MAX_PAGE_SIZE);
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2012-12-21 18:12:41 +00:00
|
|
|
if (i >= MAX_PAGE_SIZE) {
|
|
|
|
av_log(s, AV_LOG_INFO, "cannot find sync word\n");
|
2011-04-15 15:08:12 +00:00
|
|
|
return AVERROR_INVALIDDATA;
|
2005-04-09 15:32:58 +00:00
|
|
|
}
|
|
|
|
|
2012-12-24 13:43:03 +00:00
|
|
|
if (avio_r8(bc) != 0) { /* version */
|
2012-05-04 11:48:58 +00:00
|
|
|
av_log (s, AV_LOG_ERROR, "ogg page, unsupported version\n");
|
2011-04-15 15:08:12 +00:00
|
|
|
return AVERROR_INVALIDDATA;
|
2012-05-04 11:48:58 +00:00
|
|
|
}
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2012-12-21 18:12:41 +00:00
|
|
|
flags = avio_r8(bc);
|
|
|
|
gp = avio_rl64(bc);
|
|
|
|
serial = avio_rl32(bc);
|
2011-06-01 16:26:27 +00:00
|
|
|
avio_skip(bc, 8); /* seq, crc */
|
2012-12-21 18:12:41 +00:00
|
|
|
nsegs = avio_r8(bc);
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2012-12-21 18:12:41 +00:00
|
|
|
idx = ogg_find_stream(ogg, serial);
|
|
|
|
if (idx < 0) {
|
2012-09-16 20:24:11 +00:00
|
|
|
if (data_packets_seen(ogg))
|
2013-01-16 18:58:59 +00:00
|
|
|
idx = ogg_replace_stream(s, serial, nsegs);
|
2012-09-14 22:41:08 +00:00
|
|
|
else
|
|
|
|
idx = ogg_new_stream(s, serial);
|
2011-04-24 13:40:57 +00:00
|
|
|
|
2012-05-04 11:53:57 +00:00
|
|
|
if (idx < 0) {
|
2012-09-15 00:59:23 +00:00
|
|
|
av_log(s, AV_LOG_ERROR, "failed to create or replace stream\n");
|
2011-04-15 15:08:12 +00:00
|
|
|
return idx;
|
2012-05-04 11:53:57 +00:00
|
|
|
}
|
2005-04-09 15:32:58 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
os = ogg->streams + idx;
|
2013-01-13 20:23:11 +00:00
|
|
|
ogg->page_pos =
|
2011-03-03 19:11:45 +00:00
|
|
|
os->page_pos = avio_tell(bc) - 27;
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2015-02-22 16:52:59 +00:00
|
|
|
if (os->psize > 0) {
|
|
|
|
ret = ogg_new_buf(ogg, idx);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
}
|
2006-06-25 00:41:13 +00:00
|
|
|
|
2011-06-24 10:02:41 +00:00
|
|
|
ret = avio_read(bc, os->segments, nsegs);
|
2011-04-15 15:08:12 +00:00
|
|
|
if (ret < nsegs)
|
|
|
|
return ret < 0 ? ret : AVERROR_EOF;
|
2005-04-09 15:32:58 +00:00
|
|
|
|
|
|
|
os->nsegs = nsegs;
|
2012-12-21 18:12:41 +00:00
|
|
|
os->segp = 0;
|
2005-04-09 15:32:58 +00:00
|
|
|
|
|
|
|
size = 0;
|
|
|
|
for (i = 0; i < nsegs; i++)
|
|
|
|
size += os->segments[i];
|
|
|
|
|
2012-09-16 20:24:11 +00:00
|
|
|
if (!(flags & OGG_FLAG_BOS))
|
|
|
|
os->got_data = 1;
|
|
|
|
|
2012-12-21 18:12:41 +00:00
|
|
|
if (flags & OGG_FLAG_CONT || os->incomplete) {
|
|
|
|
if (!os->psize) {
|
2012-02-04 14:27:34 +00:00
|
|
|
// If this is the very first segment we started
|
|
|
|
// playback in the middle of a continuation packet.
|
|
|
|
// Discard it since we missed the start of it.
|
2012-12-21 18:12:41 +00:00
|
|
|
while (os->segp < os->nsegs) {
|
2005-04-09 15:32:58 +00:00
|
|
|
int seg = os->segments[os->segp++];
|
|
|
|
os->pstart += seg;
|
|
|
|
if (seg < 255)
|
2009-02-14 13:44:21 +00:00
|
|
|
break;
|
2005-04-09 15:32:58 +00:00
|
|
|
}
|
2010-03-11 07:17:24 +00:00
|
|
|
os->sync_pos = os->page_pos;
|
2005-04-09 15:32:58 +00:00
|
|
|
}
|
2012-12-21 18:12:41 +00:00
|
|
|
} else {
|
|
|
|
os->psize = 0;
|
2010-03-11 07:17:24 +00:00
|
|
|
os->sync_pos = os->page_pos;
|
2005-04-09 15:32:58 +00:00
|
|
|
}
|
|
|
|
|
2012-12-21 18:12:41 +00:00
|
|
|
if (os->bufsize - os->bufpos < size) {
|
2015-06-29 21:48:34 +00:00
|
|
|
uint8_t *nb = av_malloc((os->bufsize *= 2) + AV_INPUT_BUFFER_PADDING_SIZE);
|
2012-12-22 16:58:24 +00:00
|
|
|
if (!nb)
|
|
|
|
return AVERROR(ENOMEM);
|
2012-12-21 18:12:41 +00:00
|
|
|
memcpy(nb, os->buf, os->bufpos);
|
|
|
|
av_free(os->buf);
|
2005-04-09 15:32:58 +00:00
|
|
|
os->buf = nb;
|
|
|
|
}
|
|
|
|
|
2011-06-24 10:02:41 +00:00
|
|
|
ret = avio_read(bc, os->buf + os->bufpos, size);
|
2011-04-15 15:08:12 +00:00
|
|
|
if (ret < size)
|
|
|
|
return ret < 0 ? ret : AVERROR_EOF;
|
2005-04-09 15:32:58 +00:00
|
|
|
|
|
|
|
os->bufpos += size;
|
|
|
|
os->granule = gp;
|
2012-12-21 18:12:41 +00:00
|
|
|
os->flags = flags;
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2015-06-29 21:48:34 +00:00
|
|
|
memset(os->buf + os->bufpos, 0, AV_INPUT_BUFFER_PADDING_SIZE);
|
2012-09-14 21:10:38 +00:00
|
|
|
if (sid)
|
|
|
|
*sid = idx;
|
2005-04-09 15:32:58 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-08-05 07:45:04 +00:00
|
|
|
/**
|
|
|
|
* @brief find the next Ogg packet
|
2012-09-14 21:10:38 +00:00
|
|
|
* @param *sid is set to the stream for the packet or -1 if there is
|
2012-08-05 07:45:04 +00:00
|
|
|
* no matching stream, in that case assume all other return
|
|
|
|
* values to be uninitialized.
|
|
|
|
* @return negative value on error or EOF.
|
|
|
|
*/
|
2012-09-14 21:10:38 +00:00
|
|
|
static int ogg_packet(AVFormatContext *s, int *sid, int *dstart, int *dsize,
|
2011-05-11 18:43:29 +00:00
|
|
|
int64_t *fpos)
|
2005-04-09 15:32:58 +00:00
|
|
|
{
|
2008-11-06 01:50:56 +00:00
|
|
|
struct ogg *ogg = s->priv_data;
|
2011-04-15 15:08:12 +00:00
|
|
|
int idx, i, ret;
|
2008-11-06 01:50:56 +00:00
|
|
|
struct ogg_stream *os;
|
2005-04-09 15:32:58 +00:00
|
|
|
int complete = 0;
|
2012-12-21 18:12:41 +00:00
|
|
|
int segp = 0, psize = 0;
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2015-03-16 08:57:35 +00:00
|
|
|
av_log(s, AV_LOG_TRACE, "ogg_packet: curidx=%i\n", ogg->curidx);
|
2012-09-14 21:10:38 +00:00
|
|
|
if (sid)
|
|
|
|
*sid = -1;
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2012-12-21 18:12:41 +00:00
|
|
|
do {
|
2005-04-09 15:32:58 +00:00
|
|
|
idx = ogg->curidx;
|
|
|
|
|
2012-12-21 18:12:41 +00:00
|
|
|
while (idx < 0) {
|
2011-06-24 10:02:41 +00:00
|
|
|
ret = ogg_read_page(s, &idx);
|
2011-04-15 15:08:12 +00:00
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
2005-04-09 15:32:58 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
os = ogg->streams + idx;
|
|
|
|
|
2015-03-16 08:57:35 +00:00
|
|
|
av_log(s, AV_LOG_TRACE, "ogg_packet: idx=%d pstart=%d psize=%d segp=%d nsegs=%d\n",
|
2005-04-09 15:32:58 +00:00
|
|
|
idx, os->pstart, os->psize, os->segp, os->nsegs);
|
|
|
|
|
2012-12-21 18:12:41 +00:00
|
|
|
if (!os->codec) {
|
|
|
|
if (os->header < 0) {
|
|
|
|
os->codec = ogg_find_codec(os->buf, os->bufpos);
|
|
|
|
if (!os->codec) {
|
2011-04-15 15:08:12 +00:00
|
|
|
av_log(s, AV_LOG_WARNING, "Codec not found\n");
|
2005-04-09 15:32:58 +00:00
|
|
|
os->header = 0;
|
|
|
|
return 0;
|
|
|
|
}
|
2012-12-21 18:12:41 +00:00
|
|
|
} else {
|
2005-04-09 15:32:58 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-12-21 18:12:41 +00:00
|
|
|
segp = os->segp;
|
2005-04-09 15:32:58 +00:00
|
|
|
psize = os->psize;
|
|
|
|
|
2012-12-21 18:12:41 +00:00
|
|
|
while (os->segp < os->nsegs) {
|
2005-04-09 15:32:58 +00:00
|
|
|
int ss = os->segments[os->segp++];
|
|
|
|
os->psize += ss;
|
2012-12-21 18:12:41 +00:00
|
|
|
if (ss < 255) {
|
2005-04-09 15:32:58 +00:00
|
|
|
complete = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-12-21 18:12:41 +00:00
|
|
|
if (!complete && os->segp == os->nsegs) {
|
|
|
|
ogg->curidx = -1;
|
2012-02-04 14:27:34 +00:00
|
|
|
// Do not set incomplete for empty packets.
|
|
|
|
// Together with the code in ogg_read_page
|
|
|
|
// that discards all continuation of empty packets
|
|
|
|
// we would get an infinite loop.
|
|
|
|
os->incomplete = !!os->psize;
|
2005-04-09 15:32:58 +00:00
|
|
|
}
|
2012-12-21 18:12:41 +00:00
|
|
|
} while (!complete);
|
2005-04-09 15:32:58 +00:00
|
|
|
|
|
|
|
|
2010-04-16 12:21:38 +00:00
|
|
|
if (os->granule == -1)
|
2012-12-21 18:12:41 +00:00
|
|
|
av_log(s, AV_LOG_WARNING,
|
|
|
|
"Page at %"PRId64" is missing granule\n",
|
|
|
|
os->page_pos);
|
2010-04-16 12:21:38 +00:00
|
|
|
|
2012-12-21 18:12:41 +00:00
|
|
|
ogg->curidx = idx;
|
2010-02-08 10:13:03 +00:00
|
|
|
os->incomplete = 0;
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2010-03-12 05:17:01 +00:00
|
|
|
if (os->header) {
|
2012-12-21 18:12:41 +00:00
|
|
|
os->header = os->codec->header(s, idx);
|
|
|
|
if (!os->header) {
|
|
|
|
os->segp = segp;
|
2009-02-14 13:44:21 +00:00
|
|
|
os->psize = psize;
|
2010-11-29 19:02:28 +00:00
|
|
|
|
2011-02-05 16:32:35 +00:00
|
|
|
// We have reached the first non-header packet in this stream.
|
|
|
|
// Unfortunately more header packets may still follow for others,
|
2011-04-07 23:17:21 +00:00
|
|
|
// but if we continue with header parsing we may lose data packets.
|
2009-02-14 13:44:21 +00:00
|
|
|
ogg->headers = 1;
|
2010-11-29 19:02:28 +00:00
|
|
|
|
|
|
|
// Update the header state for all streams and
|
|
|
|
// compute the data_offset.
|
2015-02-06 13:53:40 +00:00
|
|
|
if (!s->internal->data_offset)
|
|
|
|
s->internal->data_offset = os->sync_pos;
|
2012-12-21 18:12:41 +00:00
|
|
|
|
2010-11-29 19:02:28 +00:00
|
|
|
for (i = 0; i < ogg->nstreams; i++) {
|
|
|
|
struct ogg_stream *cur_os = ogg->streams + i;
|
|
|
|
|
|
|
|
// if we have a partial non-header packet, its start is
|
|
|
|
// obviously at or after the data start
|
|
|
|
if (cur_os->incomplete)
|
2015-02-06 13:53:40 +00:00
|
|
|
s->internal->data_offset = FFMIN(s->internal->data_offset, cur_os->sync_pos);
|
2010-11-29 19:02:28 +00:00
|
|
|
}
|
2012-12-21 18:12:41 +00:00
|
|
|
} else {
|
2012-09-19 23:01:43 +00:00
|
|
|
os->nb_header++;
|
2009-02-14 13:44:21 +00:00
|
|
|
os->pstart += os->psize;
|
2012-12-21 18:12:41 +00:00
|
|
|
os->psize = 0;
|
2005-04-09 15:32:58 +00:00
|
|
|
}
|
2010-03-12 05:17:01 +00:00
|
|
|
} else {
|
2012-12-21 18:12:41 +00:00
|
|
|
os->pflags = 0;
|
2009-10-12 21:30:03 +00:00
|
|
|
os->pduration = 0;
|
2005-04-09 15:32:58 +00:00
|
|
|
if (os->codec && os->codec->packet)
|
2012-12-21 18:12:41 +00:00
|
|
|
os->codec->packet(s, idx);
|
2012-09-14 21:10:38 +00:00
|
|
|
if (sid)
|
|
|
|
*sid = idx;
|
2006-06-25 00:41:13 +00:00
|
|
|
if (dstart)
|
|
|
|
*dstart = os->pstart;
|
|
|
|
if (dsize)
|
|
|
|
*dsize = os->psize;
|
2010-03-11 07:17:24 +00:00
|
|
|
if (fpos)
|
|
|
|
*fpos = os->sync_pos;
|
2012-12-21 18:12:41 +00:00
|
|
|
os->pstart += os->psize;
|
|
|
|
os->psize = 0;
|
2011-06-03 19:14:30 +00:00
|
|
|
if(os->pstart == os->bufpos)
|
|
|
|
os->bufpos = os->pstart = 0;
|
2010-03-11 07:17:24 +00:00
|
|
|
os->sync_pos = os->page_pos;
|
2005-04-09 15:32:58 +00:00
|
|
|
}
|
|
|
|
|
2009-12-12 20:18:43 +00:00
|
|
|
// determine whether there are more complete packets in this page
|
|
|
|
// if not, the page's granule will apply to this packet
|
|
|
|
os->page_end = 1;
|
|
|
|
for (i = os->segp; i < os->nsegs; i++)
|
|
|
|
if (os->segments[i] < 255) {
|
|
|
|
os->page_end = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2005-04-09 15:32:58 +00:00
|
|
|
if (os->segp == os->nsegs)
|
|
|
|
ogg->curidx = -1;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-05-11 18:43:29 +00:00
|
|
|
static int ogg_get_length(AVFormatContext *s)
|
2005-04-09 15:32:58 +00:00
|
|
|
{
|
2008-11-06 01:50:56 +00:00
|
|
|
struct ogg *ogg = s->priv_data;
|
2015-03-21 15:34:39 +00:00
|
|
|
int i, ret;
|
2008-10-03 10:16:29 +00:00
|
|
|
int64_t size, end;
|
2011-08-24 21:13:57 +00:00
|
|
|
int streams_left=0;
|
2005-05-19 21:03:03 +00:00
|
|
|
|
2016-09-27 14:26:37 +00:00
|
|
|
if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL))
|
2005-05-19 21:03:03 +00:00
|
|
|
return 0;
|
2005-04-09 15:32:58 +00:00
|
|
|
|
|
|
|
// already set
|
|
|
|
if (s->duration != AV_NOPTS_VALUE)
|
|
|
|
return 0;
|
|
|
|
|
2011-03-04 18:57:36 +00:00
|
|
|
size = avio_size(s->pb);
|
2012-12-21 18:12:41 +00:00
|
|
|
if (size < 0)
|
2006-06-04 15:06:18 +00:00
|
|
|
return 0;
|
2012-12-21 18:12:41 +00:00
|
|
|
end = size > MAX_PAGE_SIZE ? size - MAX_PAGE_SIZE : 0;
|
2006-06-04 15:06:18 +00:00
|
|
|
|
2015-02-22 17:54:10 +00:00
|
|
|
ret = ogg_save(s);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
2012-12-21 18:12:41 +00:00
|
|
|
avio_seek(s->pb, end, SEEK_SET);
|
2013-01-13 20:23:11 +00:00
|
|
|
ogg->page_pos = -1;
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2012-12-21 18:12:41 +00:00
|
|
|
while (!ogg_read_page(s, &i)) {
|
2007-01-15 22:45:50 +00:00
|
|
|
if (ogg->streams[i].granule != -1 && ogg->streams[i].granule != 0 &&
|
2010-04-16 12:21:35 +00:00
|
|
|
ogg->streams[i].codec) {
|
|
|
|
s->streams[i]->duration =
|
2012-12-21 18:12:41 +00:00
|
|
|
ogg_gptopts(s, i, ogg->streams[i].granule, NULL);
|
2012-12-24 13:43:03 +00:00
|
|
|
if (s->streams[i]->start_time != AV_NOPTS_VALUE) {
|
2010-04-16 12:21:35 +00:00
|
|
|
s->streams[i]->duration -= s->streams[i]->start_time;
|
2011-08-24 21:13:57 +00:00
|
|
|
streams_left-= (ogg->streams[i].got_start==-1);
|
|
|
|
ogg->streams[i].got_start= 1;
|
2012-12-24 13:43:03 +00:00
|
|
|
} else if(!ogg->streams[i].got_start) {
|
2011-08-24 21:13:57 +00:00
|
|
|
ogg->streams[i].got_start= -1;
|
|
|
|
streams_left++;
|
|
|
|
}
|
2010-04-16 12:21:35 +00:00
|
|
|
}
|
2005-04-09 15:32:58 +00:00
|
|
|
}
|
|
|
|
|
2017-02-28 12:36:29 +00:00
|
|
|
ogg_restore(s);
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2015-02-22 17:54:10 +00:00
|
|
|
ret = ogg_save(s);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
2015-02-11 01:13:46 +00:00
|
|
|
avio_seek (s->pb, s->internal->data_offset, SEEK_SET);
|
2012-05-14 12:07:09 +00:00
|
|
|
ogg_reset(s);
|
2012-08-05 07:41:20 +00:00
|
|
|
while (streams_left > 0 && !ogg_packet(s, &i, NULL, NULL, NULL)) {
|
|
|
|
int64_t pts;
|
|
|
|
if (i < 0) continue;
|
|
|
|
pts = ogg_calc_pts(s, i, NULL);
|
2016-12-09 16:01:14 +00:00
|
|
|
if (s->streams[i]->duration == AV_NOPTS_VALUE)
|
|
|
|
continue;
|
2012-12-24 13:43:03 +00:00
|
|
|
if (pts != AV_NOPTS_VALUE && s->streams[i]->start_time == AV_NOPTS_VALUE && !ogg->streams[i].got_start) {
|
2012-05-14 12:07:09 +00:00
|
|
|
s->streams[i]->duration -= pts;
|
|
|
|
ogg->streams[i].got_start= 1;
|
|
|
|
streams_left--;
|
2012-12-24 13:43:03 +00:00
|
|
|
}else if(s->streams[i]->start_time != AV_NOPTS_VALUE && !ogg->streams[i].got_start) {
|
2012-06-02 20:50:40 +00:00
|
|
|
ogg->streams[i].got_start= 1;
|
|
|
|
streams_left--;
|
2012-08-05 02:41:34 +00:00
|
|
|
}
|
2011-05-07 13:31:04 +00:00
|
|
|
}
|
2017-02-28 12:36:29 +00:00
|
|
|
ogg_restore (s);
|
2011-05-07 13:31:04 +00:00
|
|
|
|
2005-04-09 15:32:58 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2013-01-04 14:44:02 +00:00
|
|
|
static int ogg_read_close(AVFormatContext *s)
|
|
|
|
{
|
|
|
|
struct ogg *ogg = s->priv_data;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < ogg->nstreams; i++) {
|
2017-02-28 14:16:23 +00:00
|
|
|
free_stream(s, i);
|
2013-01-04 14:44:02 +00:00
|
|
|
}
|
2014-04-07 12:48:13 +00:00
|
|
|
|
|
|
|
ogg->nstreams = 0;
|
|
|
|
|
2013-10-19 20:50:16 +00:00
|
|
|
av_freep(&ogg->streams);
|
2013-01-04 14:44:02 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-01-12 12:20:36 +00:00
|
|
|
static int ogg_read_header(AVFormatContext *s)
|
2005-04-09 15:32:58 +00:00
|
|
|
{
|
2008-11-06 01:50:56 +00:00
|
|
|
struct ogg *ogg = s->priv_data;
|
2011-04-15 15:08:12 +00:00
|
|
|
int ret, i;
|
2012-09-14 21:05:57 +00:00
|
|
|
|
2005-04-09 15:32:58 +00:00
|
|
|
ogg->curidx = -1;
|
2012-09-14 21:05:57 +00:00
|
|
|
|
2005-04-09 15:32:58 +00:00
|
|
|
//linear headers seek from start
|
2012-09-14 21:05:57 +00:00
|
|
|
do {
|
|
|
|
ret = ogg_packet(s, NULL, NULL, NULL, NULL);
|
2012-11-20 14:12:37 +00:00
|
|
|
if (ret < 0) {
|
|
|
|
ogg_read_close(s);
|
2012-09-14 21:05:57 +00:00
|
|
|
return ret;
|
2012-11-20 14:12:37 +00:00
|
|
|
}
|
2012-09-14 21:05:57 +00:00
|
|
|
} while (!ogg->headers);
|
2015-04-20 01:19:29 +00:00
|
|
|
av_log(s, AV_LOG_TRACE, "found headers\n");
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2012-09-25 13:34:58 +00:00
|
|
|
for (i = 0; i < ogg->nstreams; i++) {
|
|
|
|
struct ogg_stream *os = ogg->streams + i;
|
|
|
|
|
2012-09-25 13:22:05 +00:00
|
|
|
if (ogg->streams[i].header < 0) {
|
|
|
|
av_log(s, AV_LOG_ERROR, "Header parsing failed for stream %d\n", i);
|
2009-09-30 09:46:48 +00:00
|
|
|
ogg->streams[i].codec = NULL;
|
2016-05-09 22:27:29 +00:00
|
|
|
av_freep(&ogg->streams[i].private);
|
2012-09-25 13:34:58 +00:00
|
|
|
} else if (os->codec && os->nb_header < os->codec->nb_header) {
|
2013-06-23 11:21:21 +00:00
|
|
|
av_log(s, AV_LOG_WARNING,
|
|
|
|
"Headers mismatch for stream %d: "
|
|
|
|
"expected %d received %d.\n",
|
|
|
|
i, os->codec->nb_header, os->nb_header);
|
|
|
|
if (s->error_recognition & AV_EF_EXPLODE)
|
|
|
|
return AVERROR_INVALIDDATA;
|
2012-09-25 13:22:05 +00:00
|
|
|
}
|
2012-09-25 14:00:09 +00:00
|
|
|
if (os->start_granule != OGG_NOGRANULE_VALUE)
|
|
|
|
os->lastpts = s->streams[i]->start_time =
|
|
|
|
ogg_gptopts(s, i, os->start_granule, NULL);
|
2012-09-25 13:34:58 +00:00
|
|
|
}
|
2009-09-30 09:46:48 +00:00
|
|
|
|
2005-04-09 15:32:58 +00:00
|
|
|
//linear granulepos seek from end
|
2015-03-21 15:34:39 +00:00
|
|
|
ret = ogg_get_length(s);
|
|
|
|
if (ret < 0) {
|
|
|
|
ogg_read_close(s);
|
|
|
|
return ret;
|
|
|
|
}
|
2005-04-09 15:32:58 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-03-11 07:17:53 +00:00
|
|
|
static int64_t ogg_calc_pts(AVFormatContext *s, int idx, int64_t *dts)
|
|
|
|
{
|
2012-12-21 18:12:41 +00:00
|
|
|
struct ogg *ogg = s->priv_data;
|
2010-03-11 07:17:53 +00:00
|
|
|
struct ogg_stream *os = ogg->streams + idx;
|
2012-12-21 18:12:41 +00:00
|
|
|
int64_t pts = AV_NOPTS_VALUE;
|
2010-03-11 07:17:53 +00:00
|
|
|
|
|
|
|
if (dts)
|
|
|
|
*dts = AV_NOPTS_VALUE;
|
|
|
|
|
|
|
|
if (os->lastpts != AV_NOPTS_VALUE) {
|
2012-12-21 18:12:41 +00:00
|
|
|
pts = os->lastpts;
|
2010-03-11 07:17:53 +00:00
|
|
|
os->lastpts = AV_NOPTS_VALUE;
|
|
|
|
}
|
|
|
|
if (os->lastdts != AV_NOPTS_VALUE) {
|
|
|
|
if (dts)
|
|
|
|
*dts = os->lastdts;
|
|
|
|
os->lastdts = AV_NOPTS_VALUE;
|
|
|
|
}
|
|
|
|
if (os->page_end) {
|
|
|
|
if (os->granule != -1LL) {
|
|
|
|
if (os->codec && os->codec->granule_is_start)
|
|
|
|
pts = ogg_gptopts(s, idx, os->granule, dts);
|
|
|
|
else
|
|
|
|
os->lastpts = ogg_gptopts(s, idx, os->granule, &os->lastdts);
|
|
|
|
os->granule = -1LL;
|
2010-04-16 12:21:38 +00:00
|
|
|
}
|
2010-03-11 07:17:53 +00:00
|
|
|
}
|
|
|
|
return pts;
|
|
|
|
}
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2012-02-06 21:03:25 +00:00
|
|
|
static void ogg_validate_keyframe(AVFormatContext *s, int idx, int pstart, int psize)
|
|
|
|
{
|
|
|
|
struct ogg *ogg = s->priv_data;
|
|
|
|
struct ogg_stream *os = ogg->streams + idx;
|
2014-01-09 22:17:50 +00:00
|
|
|
int invalid = 0;
|
|
|
|
if (psize) {
|
2016-04-10 19:58:15 +00:00
|
|
|
switch (s->streams[idx]->codecpar->codec_id) {
|
2014-01-09 22:17:50 +00:00
|
|
|
case AV_CODEC_ID_THEORA:
|
|
|
|
invalid = !!(os->pflags & AV_PKT_FLAG_KEY) != !(os->buf[pstart] & 0x40);
|
|
|
|
break;
|
|
|
|
case AV_CODEC_ID_VP8:
|
|
|
|
invalid = !!(os->pflags & AV_PKT_FLAG_KEY) != !(os->buf[pstart] & 1);
|
|
|
|
}
|
|
|
|
if (invalid) {
|
2012-02-06 21:03:25 +00:00
|
|
|
os->pflags ^= AV_PKT_FLAG_KEY;
|
2012-02-18 20:19:58 +00:00
|
|
|
av_log(s, AV_LOG_WARNING, "Broken file, %skeyframe not correctly marked.\n",
|
|
|
|
(os->pflags & AV_PKT_FLAG_KEY) ? "" : "non-");
|
2012-02-06 21:03:25 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-05-11 18:43:29 +00:00
|
|
|
static int ogg_read_packet(AVFormatContext *s, AVPacket *pkt)
|
2005-04-09 15:32:58 +00:00
|
|
|
{
|
2008-11-06 01:50:56 +00:00
|
|
|
struct ogg *ogg;
|
|
|
|
struct ogg_stream *os;
|
2012-08-05 07:45:04 +00:00
|
|
|
int idx, ret;
|
2006-06-25 00:41:13 +00:00
|
|
|
int pstart, psize;
|
2010-03-11 07:18:00 +00:00
|
|
|
int64_t fpos, pts, dts;
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2013-04-04 02:03:07 +00:00
|
|
|
if (s->io_repositioned) {
|
|
|
|
ogg_reset(s);
|
|
|
|
s->io_repositioned = 0;
|
|
|
|
}
|
|
|
|
|
2005-12-17 18:14:38 +00:00
|
|
|
//Get an ogg packet
|
2010-03-11 07:18:00 +00:00
|
|
|
retry:
|
2012-12-21 18:12:41 +00:00
|
|
|
do {
|
2011-06-24 10:02:41 +00:00
|
|
|
ret = ogg_packet(s, &idx, &pstart, &psize, &fpos);
|
2011-06-24 10:02:41 +00:00
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
2012-12-21 18:12:41 +00:00
|
|
|
} while (idx < 0 || !s->streams[idx]);
|
2005-04-09 15:32:58 +00:00
|
|
|
|
|
|
|
ogg = s->priv_data;
|
2012-12-21 18:12:41 +00:00
|
|
|
os = ogg->streams + idx;
|
2005-04-09 15:32:58 +00:00
|
|
|
|
2010-03-11 07:18:00 +00:00
|
|
|
// pflags might not be set until after this
|
|
|
|
pts = ogg_calc_pts(s, idx, &dts);
|
2012-02-06 21:03:25 +00:00
|
|
|
ogg_validate_keyframe(s, idx, pstart, psize);
|
2010-03-11 07:18:00 +00:00
|
|
|
|
2010-03-31 12:29:58 +00:00
|
|
|
if (os->keyframe_seek && !(os->pflags & AV_PKT_FLAG_KEY))
|
2010-03-11 07:18:00 +00:00
|
|
|
goto retry;
|
|
|
|
os->keyframe_seek = 0;
|
|
|
|
|
2005-04-09 15:32:58 +00:00
|
|
|
//Alloc a pkt
|
2011-06-24 10:02:41 +00:00
|
|
|
ret = av_new_packet(pkt, psize);
|
2011-06-24 10:02:41 +00:00
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
2005-04-09 15:32:58 +00:00
|
|
|
pkt->stream_index = idx;
|
2012-12-21 18:12:41 +00:00
|
|
|
memcpy(pkt->data, os->buf + pstart, psize);
|
2009-12-12 20:18:43 +00:00
|
|
|
|
2012-12-21 18:12:41 +00:00
|
|
|
pkt->pts = pts;
|
|
|
|
pkt->dts = dts;
|
|
|
|
pkt->flags = os->pflags;
|
2009-10-12 21:30:03 +00:00
|
|
|
pkt->duration = os->pduration;
|
2012-12-21 18:12:41 +00:00
|
|
|
pkt->pos = fpos;
|
2007-11-11 21:56:18 +00:00
|
|
|
|
2013-09-12 17:24:18 +00:00
|
|
|
if (os->end_trimming) {
|
|
|
|
uint8_t *side_data = av_packet_new_side_data(pkt,
|
|
|
|
AV_PKT_DATA_SKIP_SAMPLES,
|
|
|
|
10);
|
2014-08-15 18:33:21 +00:00
|
|
|
if(!side_data)
|
2014-04-06 15:09:32 +00:00
|
|
|
goto fail;
|
2013-09-12 17:24:18 +00:00
|
|
|
AV_WL32(side_data + 4, os->end_trimming);
|
2013-12-12 04:33:21 +00:00
|
|
|
os->end_trimming = 0;
|
2013-09-12 17:24:18 +00:00
|
|
|
}
|
|
|
|
|
2014-02-05 17:10:54 +00:00
|
|
|
if (os->new_metadata) {
|
|
|
|
uint8_t *side_data = av_packet_new_side_data(pkt,
|
|
|
|
AV_PKT_DATA_METADATA_UPDATE,
|
|
|
|
os->new_metadata_size);
|
2014-08-15 18:33:21 +00:00
|
|
|
if(!side_data)
|
2014-04-06 15:09:32 +00:00
|
|
|
goto fail;
|
|
|
|
|
2014-02-05 17:10:54 +00:00
|
|
|
memcpy(side_data, os->new_metadata, os->new_metadata_size);
|
|
|
|
av_freep(&os->new_metadata);
|
|
|
|
os->new_metadata_size = 0;
|
|
|
|
}
|
|
|
|
|
2006-06-25 00:41:13 +00:00
|
|
|
return psize;
|
2014-04-06 15:09:32 +00:00
|
|
|
fail:
|
2015-10-27 13:35:30 +00:00
|
|
|
av_packet_unref(pkt);
|
2014-04-06 15:09:32 +00:00
|
|
|
return AVERROR(ENOMEM);
|
2005-04-09 15:32:58 +00:00
|
|
|
}
|
|
|
|
|
2011-05-11 18:43:29 +00:00
|
|
|
static int64_t ogg_read_timestamp(AVFormatContext *s, int stream_index,
|
|
|
|
int64_t *pos_arg, int64_t pos_limit)
|
2005-04-09 15:32:58 +00:00
|
|
|
{
|
2008-11-06 01:50:56 +00:00
|
|
|
struct ogg *ogg = s->priv_data;
|
2011-02-20 10:04:12 +00:00
|
|
|
AVIOContext *bc = s->pb;
|
2012-12-21 18:12:41 +00:00
|
|
|
int64_t pts = AV_NOPTS_VALUE;
|
2012-12-24 13:43:03 +00:00
|
|
|
int64_t keypos = -1;
|
2012-08-05 07:45:04 +00:00
|
|
|
int i;
|
2012-02-06 21:03:25 +00:00
|
|
|
int pstart, psize;
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(bc, *pos_arg, SEEK_SET);
|
2012-05-04 11:44:28 +00:00
|
|
|
ogg_reset(s);
|
2010-03-11 07:17:56 +00:00
|
|
|
|
2012-12-24 13:43:03 +00:00
|
|
|
while ( avio_tell(bc) <= pos_limit
|
|
|
|
&& !ogg_packet(s, &i, &pstart, &psize, pos_arg)) {
|
2010-03-11 07:17:56 +00:00
|
|
|
if (i == stream_index) {
|
2011-06-29 22:44:40 +00:00
|
|
|
struct ogg_stream *os = ogg->streams + stream_index;
|
2016-03-28 22:07:47 +00:00
|
|
|
// Do not trust the last timestamps of an ogm video
|
2014-01-04 16:33:59 +00:00
|
|
|
if ( (os->flags & OGG_FLAG_EOS)
|
|
|
|
&& !(os->flags & OGG_FLAG_BOS)
|
|
|
|
&& os->codec == &ff_ogm_video_codec)
|
|
|
|
continue;
|
2010-03-11 07:17:56 +00:00
|
|
|
pts = ogg_calc_pts(s, i, NULL);
|
2012-02-06 21:03:25 +00:00
|
|
|
ogg_validate_keyframe(s, i, pstart, psize);
|
2012-02-04 19:31:21 +00:00
|
|
|
if (os->pflags & AV_PKT_FLAG_KEY) {
|
|
|
|
keypos = *pos_arg;
|
|
|
|
} else if (os->keyframe_seek) {
|
|
|
|
// if we had a previous keyframe but no pts for it,
|
|
|
|
// return that keyframe with this pts value.
|
|
|
|
if (keypos >= 0)
|
|
|
|
*pos_arg = keypos;
|
|
|
|
else
|
|
|
|
pts = AV_NOPTS_VALUE;
|
|
|
|
}
|
2007-10-10 10:33:07 +00:00
|
|
|
}
|
2010-03-11 07:17:56 +00:00
|
|
|
if (pts != AV_NOPTS_VALUE)
|
|
|
|
break;
|
2007-10-10 10:33:07 +00:00
|
|
|
}
|
2012-05-04 11:44:28 +00:00
|
|
|
ogg_reset(s);
|
2007-10-10 10:33:07 +00:00
|
|
|
return pts;
|
2005-04-09 15:32:58 +00:00
|
|
|
}
|
|
|
|
|
2011-05-11 18:43:29 +00:00
|
|
|
static int ogg_read_seek(AVFormatContext *s, int stream_index,
|
|
|
|
int64_t timestamp, int flags)
|
2010-03-11 07:18:00 +00:00
|
|
|
{
|
2012-12-21 18:12:41 +00:00
|
|
|
struct ogg *ogg = s->priv_data;
|
2010-03-11 07:18:00 +00:00
|
|
|
struct ogg_stream *os = ogg->streams + stream_index;
|
|
|
|
int ret;
|
|
|
|
|
2012-04-17 12:44:06 +00:00
|
|
|
av_assert0(stream_index < ogg->nstreams);
|
2012-02-04 20:04:19 +00:00
|
|
|
// Ensure everything is reset even when seeking via
|
|
|
|
// the generated index.
|
2012-05-04 11:44:28 +00:00
|
|
|
ogg_reset(s);
|
2012-02-04 20:04:19 +00:00
|
|
|
|
2010-03-11 07:18:00 +00:00
|
|
|
// Try seeking to a keyframe first. If this fails (very possible),
|
|
|
|
// av_seek_frame will fall back to ignoring keyframes
|
lavf: replace AVStream.codec with AVStream.codecpar
Currently, AVStream contains an embedded AVCodecContext instance, which
is used by demuxers to export stream parameters to the caller and by
muxers to receive stream parameters from the caller. It is also used
internally as the codec context that is passed to parsers.
In addition, it is also widely used by the callers as the decoding (when
demuxer) or encoding (when muxing) context, though this has been
officially discouraged since Libav 11.
There are multiple important problems with this approach:
- the fields in AVCodecContext are in general one of
* stream parameters
* codec options
* codec state
However, it's not clear which ones are which. It is consequently
unclear which fields are a demuxer allowed to set or a muxer allowed to
read. This leads to erratic behaviour depending on whether decoding or
encoding is being performed or not (and whether it uses the AVStream
embedded codec context).
- various synchronization issues arising from the fact that the same
context is used by several different APIs (muxers/demuxers,
parsers, bitstream filters and encoders/decoders) simultaneously, with
there being no clear rules for who can modify what and the different
processes being typically delayed with respect to each other.
- avformat_find_stream_info() making it necessary to support opening
and closing a single codec context multiple times, thus
complicating the semantics of freeing various allocated objects in the
codec context.
Those problems are resolved by replacing the AVStream embedded codec
context with a newly added AVCodecParameters instance, which stores only
the stream parameters exported by the demuxers or read by the muxers.
2014-06-18 18:42:52 +00:00
|
|
|
if (s->streams[stream_index]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO
|
2010-03-11 07:18:00 +00:00
|
|
|
&& !(flags & AVSEEK_FLAG_ANY))
|
|
|
|
os->keyframe_seek = 1;
|
|
|
|
|
2011-10-16 13:03:30 +00:00
|
|
|
ret = ff_seek_frame_binary(s, stream_index, timestamp, flags);
|
2015-07-29 21:17:15 +00:00
|
|
|
ogg_reset(s);
|
2012-12-21 18:12:41 +00:00
|
|
|
os = ogg->streams + stream_index;
|
2010-03-11 07:18:00 +00:00
|
|
|
if (ret < 0)
|
|
|
|
os->keyframe_seek = 0;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2005-12-05 00:15:51 +00:00
|
|
|
static int ogg_probe(AVProbeData *p)
|
|
|
|
{
|
2011-05-11 18:43:30 +00:00
|
|
|
if (!memcmp("OggS", p->buf, 5) && p->buf[5] <= 0x7)
|
2005-12-05 00:15:51 +00:00
|
|
|
return AVPROBE_SCORE_MAX;
|
2011-05-11 18:43:30 +00:00
|
|
|
return 0;
|
2005-12-05 00:15:51 +00:00
|
|
|
}
|
|
|
|
|
2011-01-25 22:03:28 +00:00
|
|
|
AVInputFormat ff_ogg_demuxer = {
|
2011-05-11 18:43:31 +00:00
|
|
|
.name = "ogg",
|
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("Ogg"),
|
|
|
|
.priv_data_size = sizeof(struct ogg),
|
|
|
|
.read_probe = ogg_probe,
|
|
|
|
.read_header = ogg_read_header,
|
|
|
|
.read_packet = ogg_read_packet,
|
|
|
|
.read_close = ogg_read_close,
|
|
|
|
.read_seek = ogg_read_seek,
|
|
|
|
.read_timestamp = ogg_read_timestamp,
|
|
|
|
.extensions = "ogg",
|
2013-07-02 09:50:30 +00:00
|
|
|
.flags = AVFMT_GENERIC_INDEX | AVFMT_TS_DISCONT | AVFMT_NOBINSEARCH,
|
2005-04-09 15:32:58 +00:00
|
|
|
};
|