854 lines
29 KiB
C
Executable file
854 lines
29 KiB
C
Executable file
/*
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* Ogg muxer
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* Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at free dot fr>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdint.h>
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#include "libavutil/crc.h"
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#include "libavutil/mathematics.h"
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#include "libavutil/opt.h"
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#include "libavutil/random_seed.h"
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#include "libavcodec/xiph.h"
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#include "libavcodec/bytestream.h"
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#include "libavcodec/flac.h"
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#include "avformat.h"
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#include "avio_internal.h"
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#include "internal.h"
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#include "vorbiscomment.h"
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#define MAX_PAGE_SIZE 65025
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typedef struct OGGPage {
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int64_t start_granule;
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int64_t granule;
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int stream_index;
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uint8_t flags;
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uint8_t segments_count;
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uint8_t segments[255];
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uint8_t data[MAX_PAGE_SIZE];
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uint16_t size;
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} OGGPage;
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typedef struct OGGStreamContext {
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unsigned page_counter;
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uint8_t *header[3];
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int header_len[3];
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/** for theora granule */
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int kfgshift;
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int64_t last_kf_pts;
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int vrev;
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/* for VP8 granule */
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int isvp8;
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int eos;
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unsigned page_count; ///< number of page buffered
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OGGPage page; ///< current page
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unsigned serial_num; ///< serial number
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int64_t last_granule; ///< last packet granule
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} OGGStreamContext;
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typedef struct OGGPageList {
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OGGPage page;
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struct OGGPageList *next;
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} OGGPageList;
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typedef struct OGGContext {
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const AVClass *class;
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OGGPageList *page_list;
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int pref_size; ///< preferred page size (0 => fill all segments)
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int64_t pref_duration; ///< preferred page duration (0 => fill all segments)
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int serial_offset;
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} OGGContext;
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#define OFFSET(x) offsetof(OGGContext, x)
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#define PARAM AV_OPT_FLAG_ENCODING_PARAM
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static const AVOption options[] = {
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{ "serial_offset", "serial number offset",
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OFFSET(serial_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, PARAM },
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{ "oggpagesize", "Set preferred Ogg page size.",
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OFFSET(pref_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, MAX_PAGE_SIZE, PARAM},
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{ "pagesize", "preferred page size in bytes (deprecated)",
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OFFSET(pref_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, MAX_PAGE_SIZE, PARAM },
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{ "page_duration", "preferred page duration, in microseconds",
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OFFSET(pref_duration), AV_OPT_TYPE_INT64, { .i64 = 1000000 }, 0, INT64_MAX, PARAM },
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{ NULL },
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};
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#define OGG_CLASS(flavor, name)\
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static const AVClass flavor ## _muxer_class = {\
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.class_name = #name " muxer",\
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.item_name = av_default_item_name,\
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.option = options,\
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.version = LIBAVUTIL_VERSION_INT,\
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};
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static void ogg_write_page(AVFormatContext *s, OGGPage *page, int extra_flags)
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{
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OGGStreamContext *oggstream = s->streams[page->stream_index]->priv_data;
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uint8_t buf[4 + 1 + 1 + 8 + 4 + 4 + 4 + 1 + 255], *ptr = buf, *crc_pos;
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const AVCRC *crc_table = av_crc_get_table(AV_CRC_32_IEEE);
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uint32_t crc;
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bytestream_put_le32(&ptr, MKTAG('O', 'g', 'g', 'S'));
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bytestream_put_byte(&ptr, 0);
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bytestream_put_byte(&ptr, page->flags | extra_flags);
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bytestream_put_le64(&ptr, page->granule);
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bytestream_put_le32(&ptr, oggstream->serial_num);
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bytestream_put_le32(&ptr, oggstream->page_counter++);
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crc_pos = ptr;
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bytestream_put_le32(&ptr, 0);
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bytestream_put_byte(&ptr, page->segments_count);
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bytestream_put_buffer(&ptr, page->segments, page->segments_count);
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crc = av_crc(crc_table, 0, buf, ptr - buf);
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crc = av_crc(crc_table, crc, page->data, page->size);
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bytestream_put_be32(&crc_pos, crc);
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avio_write(s->pb, buf, ptr - buf);
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avio_write(s->pb, page->data, page->size);
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avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_FLUSH_POINT);
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oggstream->page_count--;
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}
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static int ogg_key_granule(OGGStreamContext *oggstream, int64_t granule)
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{
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return (oggstream->kfgshift && !(granule & ((1<<oggstream->kfgshift)-1))) ||
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(oggstream->isvp8 && !((granule >> 3) & 0x07ffffff));
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}
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static int64_t ogg_granule_to_timestamp(OGGStreamContext *oggstream, int64_t granule)
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{
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if (oggstream->kfgshift)
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return (granule>>oggstream->kfgshift) +
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(granule & ((1<<oggstream->kfgshift)-1));
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else if (oggstream->isvp8)
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return granule >> 32;
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else
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return granule;
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}
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static int ogg_compare_granule(AVFormatContext *s, OGGPage *next, OGGPage *page)
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{
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AVStream *st2 = s->streams[next->stream_index];
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AVStream *st = s->streams[page->stream_index];
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int64_t next_granule, cur_granule;
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if (next->granule == -1 || page->granule == -1)
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return 0;
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next_granule = av_rescale_q(ogg_granule_to_timestamp(st2->priv_data, next->granule),
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st2->time_base, AV_TIME_BASE_Q);
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cur_granule = av_rescale_q(ogg_granule_to_timestamp(st->priv_data, page->granule),
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st ->time_base, AV_TIME_BASE_Q);
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return next_granule > cur_granule;
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}
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static int ogg_reset_cur_page(OGGStreamContext *oggstream)
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{
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oggstream->page.granule = -1;
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oggstream->page.flags = 0;
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oggstream->page.segments_count = 0;
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oggstream->page.size = 0;
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return 0;
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}
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static int ogg_buffer_page(AVFormatContext *s, OGGStreamContext *oggstream)
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{
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OGGContext *ogg = s->priv_data;
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OGGPageList **p = &ogg->page_list;
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OGGPageList *l = av_mallocz(sizeof(*l));
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if (!l)
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return AVERROR(ENOMEM);
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l->page = oggstream->page;
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oggstream->page.start_granule = ogg_granule_to_timestamp(oggstream, oggstream->page.granule);
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oggstream->page_count++;
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ogg_reset_cur_page(oggstream);
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while (*p) {
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if (ogg_compare_granule(s, &(*p)->page, &l->page))
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break;
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p = &(*p)->next;
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}
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l->next = *p;
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*p = l;
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return 0;
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}
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static int ogg_buffer_data(AVFormatContext *s, AVStream *st,
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uint8_t *data, unsigned size, int64_t granule,
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int header)
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{
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OGGStreamContext *oggstream = st->priv_data;
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OGGContext *ogg = s->priv_data;
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int total_segments = size / 255 + 1;
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uint8_t *p = data;
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int i, segments, len, flush = 0;
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// Handles VFR by flushing page because this frame needs to have a timestamp
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// For theora and VP8, keyframes also need to have a timestamp to correctly mark
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// them as such, otherwise seeking will not work correctly at the very
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// least with old libogg versions.
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// Do not try to flush header packets though, that will create broken files.
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if ((st->codecpar->codec_id == AV_CODEC_ID_THEORA || st->codecpar->codec_id == AV_CODEC_ID_VP8) && !header &&
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(ogg_granule_to_timestamp(oggstream, granule) >
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ogg_granule_to_timestamp(oggstream, oggstream->last_granule) + 1 ||
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ogg_key_granule(oggstream, granule))) {
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if (oggstream->page.granule != -1)
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ogg_buffer_page(s, oggstream);
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flush = 1;
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}
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// avoid a continued page
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if (!header && oggstream->page.size > 0 &&
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MAX_PAGE_SIZE - oggstream->page.size < size) {
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ogg_buffer_page(s, oggstream);
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}
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for (i = 0; i < total_segments; ) {
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OGGPage *page = &oggstream->page;
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segments = FFMIN(total_segments - i, 255 - page->segments_count);
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if (i && !page->segments_count)
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page->flags |= 1; // continued packet
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memset(page->segments+page->segments_count, 255, segments - 1);
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page->segments_count += segments - 1;
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len = FFMIN(size, segments*255);
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page->segments[page->segments_count++] = len - (segments-1)*255;
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memcpy(page->data+page->size, p, len);
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p += len;
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size -= len;
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i += segments;
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page->size += len;
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if (i == total_segments)
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page->granule = granule;
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{
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AVStream *st = s->streams[page->stream_index];
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int64_t start = av_rescale_q(page->start_granule, st->time_base,
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AV_TIME_BASE_Q);
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int64_t next = av_rescale_q(ogg_granule_to_timestamp(oggstream, page->granule),
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st->time_base, AV_TIME_BASE_Q);
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if (page->segments_count == 255) {
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ogg_buffer_page(s, oggstream);
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} else if (!header) {
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if ((ogg->pref_size > 0 && page->size >= ogg->pref_size) ||
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(ogg->pref_duration > 0 && next - start >= ogg->pref_duration)) {
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ogg_buffer_page(s, oggstream);
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}
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}
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}
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}
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if (flush && oggstream->page.granule != -1)
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ogg_buffer_page(s, oggstream);
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return 0;
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}
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static uint8_t *ogg_write_vorbiscomment(int64_t offset, int bitexact,
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int *header_len, AVDictionary **m, int framing_bit,
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AVChapter **chapters, unsigned int nb_chapters)
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{
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const char *vendor = bitexact ? "ffmpeg" : LIBAVFORMAT_IDENT;
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AVIOContext pb;
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int64_t size;
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uint8_t *p;
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ff_metadata_conv(m, ff_vorbiscomment_metadata_conv, NULL);
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size = offset + ff_vorbiscomment_length(*m, vendor, chapters, nb_chapters) + framing_bit;
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if (size > INT_MAX)
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return NULL;
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p = av_mallocz(size);
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if (!p)
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return NULL;
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ffio_init_context(&pb, p + offset, size - offset, 1, NULL, NULL, NULL, NULL);
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ff_vorbiscomment_write(&pb, *m, vendor, chapters, nb_chapters);
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if (framing_bit)
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avio_w8(&pb, 1);
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*header_len = size;
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return p;
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}
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static int ogg_build_flac_headers(AVCodecParameters *par,
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OGGStreamContext *oggstream, int bitexact,
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AVDictionary **m)
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{
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uint8_t *p;
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if (par->extradata_size < FLAC_STREAMINFO_SIZE)
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return AVERROR(EINVAL);
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// first packet: STREAMINFO
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oggstream->header_len[0] = 51;
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oggstream->header[0] = av_mallocz(51); // per ogg flac specs
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p = oggstream->header[0];
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if (!p)
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return AVERROR(ENOMEM);
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bytestream_put_byte(&p, 0x7F);
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bytestream_put_buffer(&p, "FLAC", 4);
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bytestream_put_byte(&p, 1); // major version
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bytestream_put_byte(&p, 0); // minor version
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bytestream_put_be16(&p, 1); // headers packets without this one
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bytestream_put_buffer(&p, "fLaC", 4);
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bytestream_put_byte(&p, 0x00); // streaminfo
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bytestream_put_be24(&p, 34);
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bytestream_put_buffer(&p, par->extradata, FLAC_STREAMINFO_SIZE);
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// second packet: VorbisComment
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p = ogg_write_vorbiscomment(4, bitexact, &oggstream->header_len[1], m, 0, NULL, 0);
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if (!p)
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return AVERROR(ENOMEM);
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oggstream->header[1] = p;
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bytestream_put_byte(&p, 0x84); // last metadata block and vorbis comment
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bytestream_put_be24(&p, oggstream->header_len[1] - 4);
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return 0;
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}
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#define SPEEX_HEADER_SIZE 80
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static int ogg_build_speex_headers(AVCodecParameters *par,
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OGGStreamContext *oggstream, int bitexact,
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AVDictionary **m)
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{
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uint8_t *p;
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if (par->extradata_size < SPEEX_HEADER_SIZE)
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return AVERROR_INVALIDDATA;
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// first packet: Speex header
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p = av_mallocz(SPEEX_HEADER_SIZE);
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if (!p)
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return AVERROR(ENOMEM);
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oggstream->header[0] = p;
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oggstream->header_len[0] = SPEEX_HEADER_SIZE;
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bytestream_put_buffer(&p, par->extradata, SPEEX_HEADER_SIZE);
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AV_WL32(&oggstream->header[0][68], 0); // set extra_headers to 0
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// second packet: VorbisComment
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p = ogg_write_vorbiscomment(0, bitexact, &oggstream->header_len[1], m, 0, NULL, 0);
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if (!p)
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return AVERROR(ENOMEM);
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oggstream->header[1] = p;
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return 0;
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}
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#define OPUS_HEADER_SIZE 19
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static int ogg_build_opus_headers(AVCodecParameters *par,
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OGGStreamContext *oggstream, int bitexact,
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AVDictionary **m, AVChapter **chapters,
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unsigned int nb_chapters)
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{
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uint8_t *p;
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if (par->extradata_size < OPUS_HEADER_SIZE)
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return AVERROR_INVALIDDATA;
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/* first packet: Opus header */
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p = av_mallocz(par->extradata_size);
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if (!p)
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return AVERROR(ENOMEM);
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oggstream->header[0] = p;
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oggstream->header_len[0] = par->extradata_size;
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bytestream_put_buffer(&p, par->extradata, par->extradata_size);
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/* second packet: VorbisComment */
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p = ogg_write_vorbiscomment(8, bitexact, &oggstream->header_len[1], m, 0, chapters, nb_chapters);
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if (!p)
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return AVERROR(ENOMEM);
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oggstream->header[1] = p;
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bytestream_put_buffer(&p, "OpusTags", 8);
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return 0;
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}
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#define VP8_HEADER_SIZE 26
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static int ogg_build_vp8_headers(AVFormatContext *s, AVStream *st,
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OGGStreamContext *oggstream, int bitexact)
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{
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AVCodecParameters *par = st->codecpar;
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uint8_t *p;
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/* first packet: VP8 header */
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p = av_mallocz(VP8_HEADER_SIZE);
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if (!p)
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return AVERROR(ENOMEM);
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oggstream->header[0] = p;
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oggstream->header_len[0] = VP8_HEADER_SIZE;
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bytestream_put_byte(&p, 0x4f); // HDRID
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bytestream_put_buffer(&p, "VP80", 4); // Identifier
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bytestream_put_byte(&p, 1); // HDRTYP
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bytestream_put_byte(&p, 1); // VMAJ
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bytestream_put_byte(&p, 0); // VMIN
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bytestream_put_be16(&p, par->width);
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bytestream_put_be16(&p, par->height);
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bytestream_put_be24(&p, par->sample_aspect_ratio.num);
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bytestream_put_be24(&p, par->sample_aspect_ratio.den);
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if (st->r_frame_rate.num > 0 && st->r_frame_rate.den > 0) {
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// OggVP8 requires pts to increase by 1 per visible frame, so use the least common
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// multiple framerate if available.
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av_log(s, AV_LOG_DEBUG, "Changing time base from %d/%d to %d/%d\n",
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st->time_base.num, st->time_base.den,
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st->r_frame_rate.den, st->r_frame_rate.num);
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avpriv_set_pts_info(st, 64, st->r_frame_rate.den, st->r_frame_rate.num);
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}
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bytestream_put_be32(&p, st->time_base.den);
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bytestream_put_be32(&p, st->time_base.num);
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/* optional second packet: VorbisComment */
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if (av_dict_get(st->metadata, "", NULL, AV_DICT_IGNORE_SUFFIX)) {
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p = ogg_write_vorbiscomment(7, bitexact, &oggstream->header_len[1], &st->metadata, 0, NULL, 0);
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if (!p)
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return AVERROR(ENOMEM);
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oggstream->header[1] = p;
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bytestream_put_byte(&p, 0x4f); // HDRID
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bytestream_put_buffer(&p, "VP80", 4); // Identifier
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bytestream_put_byte(&p, 2); // HDRTYP
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bytestream_put_byte(&p, 0x20);
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}
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oggstream->isvp8 = 1;
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return 0;
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}
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static void ogg_write_pages(AVFormatContext *s, int flush)
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{
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OGGContext *ogg = s->priv_data;
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OGGPageList *next, *p;
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if (!ogg->page_list)
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return;
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for (p = ogg->page_list; p; ) {
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OGGStreamContext *oggstream =
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s->streams[p->page.stream_index]->priv_data;
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|
if (oggstream->page_count < 2 && !flush)
|
|
break;
|
|
ogg_write_page(s, &p->page,
|
|
flush == 1 && oggstream->page_count == 1 ? 4 : 0); // eos
|
|
next = p->next;
|
|
av_freep(&p);
|
|
p = next;
|
|
}
|
|
ogg->page_list = p;
|
|
}
|
|
|
|
static int ogg_init(AVFormatContext *s)
|
|
{
|
|
OGGContext *ogg = s->priv_data;
|
|
OGGStreamContext *oggstream = NULL;
|
|
int i, j;
|
|
|
|
if (ogg->pref_size)
|
|
av_log(s, AV_LOG_WARNING, "The pagesize option is deprecated\n");
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *st = s->streams[i];
|
|
unsigned serial_num = i + ogg->serial_offset;
|
|
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
if (st->codecpar->codec_id == AV_CODEC_ID_OPUS)
|
|
/* Opus requires a fixed 48kHz clock */
|
|
avpriv_set_pts_info(st, 64, 1, 48000);
|
|
else
|
|
avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
|
|
}
|
|
|
|
if (st->codecpar->codec_id != AV_CODEC_ID_VORBIS &&
|
|
st->codecpar->codec_id != AV_CODEC_ID_THEORA &&
|
|
st->codecpar->codec_id != AV_CODEC_ID_SPEEX &&
|
|
st->codecpar->codec_id != AV_CODEC_ID_FLAC &&
|
|
st->codecpar->codec_id != AV_CODEC_ID_OPUS &&
|
|
st->codecpar->codec_id != AV_CODEC_ID_VP8) {
|
|
av_log(s, AV_LOG_ERROR, "Unsupported codec id in stream %d\n", i);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if ((!st->codecpar->extradata || !st->codecpar->extradata_size) &&
|
|
st->codecpar->codec_id != AV_CODEC_ID_VP8) {
|
|
av_log(s, AV_LOG_ERROR, "No extradata present\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
oggstream = av_mallocz(sizeof(*oggstream));
|
|
if (!oggstream)
|
|
return AVERROR(ENOMEM);
|
|
|
|
oggstream->page.stream_index = i;
|
|
|
|
if (!(s->flags & AVFMT_FLAG_BITEXACT))
|
|
do {
|
|
serial_num = av_get_random_seed();
|
|
for (j = 0; j < i; j++) {
|
|
OGGStreamContext *sc = s->streams[j]->priv_data;
|
|
if (serial_num == sc->serial_num)
|
|
break;
|
|
}
|
|
} while (j < i);
|
|
oggstream->serial_num = serial_num;
|
|
|
|
av_dict_copy(&st->metadata, s->metadata, AV_DICT_DONT_OVERWRITE);
|
|
|
|
st->priv_data = oggstream;
|
|
if (st->codecpar->codec_id == AV_CODEC_ID_FLAC) {
|
|
int err = ogg_build_flac_headers(st->codecpar, oggstream,
|
|
s->flags & AVFMT_FLAG_BITEXACT,
|
|
&st->metadata);
|
|
if (err) {
|
|
av_log(s, AV_LOG_ERROR, "Error writing FLAC headers\n");
|
|
return err;
|
|
}
|
|
} else if (st->codecpar->codec_id == AV_CODEC_ID_SPEEX) {
|
|
int err = ogg_build_speex_headers(st->codecpar, oggstream,
|
|
s->flags & AVFMT_FLAG_BITEXACT,
|
|
&st->metadata);
|
|
if (err) {
|
|
av_log(s, AV_LOG_ERROR, "Error writing Speex headers\n");
|
|
return err;
|
|
}
|
|
} else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
|
|
int err = ogg_build_opus_headers(st->codecpar, oggstream,
|
|
s->flags & AVFMT_FLAG_BITEXACT,
|
|
&st->metadata, s->chapters, s->nb_chapters);
|
|
if (err) {
|
|
av_log(s, AV_LOG_ERROR, "Error writing Opus headers\n");
|
|
return err;
|
|
}
|
|
} else if (st->codecpar->codec_id == AV_CODEC_ID_VP8) {
|
|
int err = ogg_build_vp8_headers(s, st, oggstream,
|
|
s->flags & AVFMT_FLAG_BITEXACT);
|
|
if (err) {
|
|
av_log(s, AV_LOG_ERROR, "Error writing VP8 headers\n");
|
|
return err;
|
|
}
|
|
} else {
|
|
uint8_t *p;
|
|
const char *cstr = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? "vorbis" : "theora";
|
|
int header_type = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 3 : 0x81;
|
|
int framing_bit = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 1 : 0;
|
|
|
|
if (avpriv_split_xiph_headers(st->codecpar->extradata, st->codecpar->extradata_size,
|
|
st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 30 : 42,
|
|
(const uint8_t**)oggstream->header, oggstream->header_len) < 0) {
|
|
av_log(s, AV_LOG_ERROR, "Extradata corrupted\n");
|
|
oggstream->header[1] = NULL;
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
p = ogg_write_vorbiscomment(7, s->flags & AVFMT_FLAG_BITEXACT,
|
|
&oggstream->header_len[1], &st->metadata,
|
|
framing_bit, NULL, 0);
|
|
oggstream->header[1] = p;
|
|
if (!p)
|
|
return AVERROR(ENOMEM);
|
|
|
|
bytestream_put_byte(&p, header_type);
|
|
bytestream_put_buffer(&p, cstr, 6);
|
|
|
|
if (st->codecpar->codec_id == AV_CODEC_ID_THEORA) {
|
|
int den = AV_RB32(oggstream->header[0] + 22), num = AV_RB32(oggstream->header[0] + 26);
|
|
/* Make sure to use time base stored in the Theora stream header to write
|
|
correct timestamps */
|
|
if (st->time_base.num != num || st->time_base.den != den) {
|
|
av_log(s, AV_LOG_DEBUG, "Changing time base from %d/%d to %d/%d\n",
|
|
st->time_base.num, st->time_base.den, num, den);
|
|
avpriv_set_pts_info(st, 64, num, den);
|
|
}
|
|
/** KFGSHIFT is the width of the less significant section of the granule position
|
|
The less significant section is the frame count since the last keyframe */
|
|
oggstream->kfgshift = ((oggstream->header[0][40]&3)<<3)|(oggstream->header[0][41]>>5);
|
|
oggstream->vrev = oggstream->header[0][9];
|
|
av_log(s, AV_LOG_DEBUG, "theora kfgshift %d, vrev %d\n",
|
|
oggstream->kfgshift, oggstream->vrev);
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ogg_write_header(AVFormatContext *s)
|
|
{
|
|
OGGStreamContext *oggstream = NULL;
|
|
int i, j;
|
|
|
|
for (j = 0; j < s->nb_streams; j++) {
|
|
oggstream = s->streams[j]->priv_data;
|
|
ogg_buffer_data(s, s->streams[j], oggstream->header[0],
|
|
oggstream->header_len[0], 0, 1);
|
|
oggstream->page.flags |= 2; // bos
|
|
ogg_buffer_page(s, oggstream);
|
|
}
|
|
for (j = 0; j < s->nb_streams; j++) {
|
|
AVStream *st = s->streams[j];
|
|
oggstream = st->priv_data;
|
|
for (i = 1; i < 3; i++) {
|
|
if (oggstream->header_len[i])
|
|
ogg_buffer_data(s, st, oggstream->header[i],
|
|
oggstream->header_len[i], 0, 1);
|
|
}
|
|
ogg_buffer_page(s, oggstream);
|
|
}
|
|
|
|
oggstream->page.start_granule = AV_NOPTS_VALUE;
|
|
|
|
ogg_write_pages(s, 2);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ogg_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
AVStream *st = s->streams[pkt->stream_index];
|
|
OGGStreamContext *oggstream = st->priv_data;
|
|
int ret;
|
|
int64_t granule;
|
|
|
|
if (st->codecpar->codec_id == AV_CODEC_ID_THEORA) {
|
|
int64_t pts = oggstream->vrev < 1 ? pkt->pts : pkt->pts + pkt->duration;
|
|
int pframe_count;
|
|
if (pkt->flags & AV_PKT_FLAG_KEY)
|
|
oggstream->last_kf_pts = pts;
|
|
pframe_count = pts - oggstream->last_kf_pts;
|
|
// prevent frame count from overflow if key frame flag is not set
|
|
if (pframe_count >= (1<<oggstream->kfgshift)) {
|
|
oggstream->last_kf_pts += pframe_count;
|
|
pframe_count = 0;
|
|
}
|
|
granule = (oggstream->last_kf_pts<<oggstream->kfgshift) | pframe_count;
|
|
} else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS)
|
|
granule = pkt->pts + pkt->duration +
|
|
av_rescale_q(st->codecpar->initial_padding,
|
|
(AVRational){ 1, st->codecpar->sample_rate },
|
|
st->time_base);
|
|
else if (st->codecpar->codec_id == AV_CODEC_ID_VP8) {
|
|
int64_t pts, invcnt, dist;
|
|
int visible;
|
|
|
|
visible = (pkt->data[0] >> 4) & 1;
|
|
pts = pkt->pts + pkt->duration;
|
|
invcnt = (oggstream->last_granule >> 30) & 3;
|
|
invcnt = visible ? 3 : (invcnt == 3 ? 0 : invcnt + 1);
|
|
dist = (pkt->flags & AV_PKT_FLAG_KEY) ? 0 : ((oggstream->last_granule >> 3) & 0x07ffffff) + 1;
|
|
|
|
granule = (pts << 32) | (invcnt << 30) | (dist << 3);
|
|
} else
|
|
granule = pkt->pts + pkt->duration;
|
|
|
|
if (oggstream->page.start_granule == AV_NOPTS_VALUE)
|
|
oggstream->page.start_granule = pkt->pts;
|
|
|
|
ret = ogg_buffer_data(s, st, pkt->data, pkt->size, granule, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ogg_write_pages(s, 0);
|
|
|
|
oggstream->last_granule = granule;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ogg_write_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
int i;
|
|
|
|
if (pkt)
|
|
return ogg_write_packet_internal(s, pkt);
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
OGGStreamContext *oggstream = s->streams[i]->priv_data;
|
|
if (oggstream->page.segments_count)
|
|
ogg_buffer_page(s, oggstream);
|
|
}
|
|
|
|
ogg_write_pages(s, 2);
|
|
return 1;
|
|
}
|
|
|
|
static int ogg_write_trailer(AVFormatContext *s)
|
|
{
|
|
int i;
|
|
|
|
/* flush current page if needed */
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
OGGStreamContext *oggstream = s->streams[i]->priv_data;
|
|
|
|
if (oggstream->page.size > 0)
|
|
ogg_buffer_page(s, oggstream);
|
|
}
|
|
|
|
ogg_write_pages(s, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ogg_free(AVFormatContext *s)
|
|
{
|
|
OGGContext *ogg = s->priv_data;
|
|
OGGPageList *p = ogg->page_list;
|
|
int i;
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *st = s->streams[i];
|
|
OGGStreamContext *oggstream = st->priv_data;
|
|
if (!oggstream)
|
|
continue;
|
|
if (st->codecpar->codec_id == AV_CODEC_ID_FLAC ||
|
|
st->codecpar->codec_id == AV_CODEC_ID_SPEEX ||
|
|
st->codecpar->codec_id == AV_CODEC_ID_OPUS ||
|
|
st->codecpar->codec_id == AV_CODEC_ID_VP8) {
|
|
av_freep(&oggstream->header[0]);
|
|
}
|
|
av_freep(&oggstream->header[1]);
|
|
}
|
|
|
|
while (p) {
|
|
OGGPageList *next = p->next;
|
|
av_free(p);
|
|
p = next;
|
|
}
|
|
ogg->page_list = NULL;
|
|
}
|
|
|
|
#if CONFIG_OGG_MUXER
|
|
OGG_CLASS(ogg, Ogg)
|
|
AVOutputFormat ff_ogg_muxer = {
|
|
.name = "ogg",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Ogg"),
|
|
.mime_type = "application/ogg",
|
|
.extensions = "ogg"
|
|
#if !CONFIG_OGV_MUXER
|
|
",ogv"
|
|
#endif
|
|
#if !CONFIG_SPX_MUXER
|
|
",spx"
|
|
#endif
|
|
#if !CONFIG_OPUS_MUXER
|
|
",opus"
|
|
#endif
|
|
,
|
|
.priv_data_size = sizeof(OGGContext),
|
|
.audio_codec = CONFIG_LIBVORBIS_ENCODER ?
|
|
AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
|
|
.video_codec = AV_CODEC_ID_THEORA,
|
|
.init = ogg_init,
|
|
.write_header = ogg_write_header,
|
|
.write_packet = ogg_write_packet,
|
|
.write_trailer = ogg_write_trailer,
|
|
.deinit = ogg_free,
|
|
.flags = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH,
|
|
.priv_class = &ogg_muxer_class,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_OGA_MUXER
|
|
OGG_CLASS(oga, Ogg audio)
|
|
AVOutputFormat ff_oga_muxer = {
|
|
.name = "oga",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Ogg Audio"),
|
|
.mime_type = "audio/ogg",
|
|
.extensions = "oga",
|
|
.priv_data_size = sizeof(OGGContext),
|
|
.audio_codec = AV_CODEC_ID_FLAC,
|
|
.init = ogg_init,
|
|
.write_header = ogg_write_header,
|
|
.write_packet = ogg_write_packet,
|
|
.write_trailer = ogg_write_trailer,
|
|
.deinit = ogg_free,
|
|
.flags = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
|
|
.priv_class = &oga_muxer_class,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_OGV_MUXER
|
|
OGG_CLASS(ogv, Ogg video)
|
|
AVOutputFormat ff_ogv_muxer = {
|
|
.name = "ogv",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Ogg Video"),
|
|
.mime_type = "video/ogg",
|
|
.extensions = "ogv",
|
|
.priv_data_size = sizeof(OGGContext),
|
|
.audio_codec = CONFIG_LIBVORBIS_ENCODER ?
|
|
AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
|
|
.video_codec = CONFIG_LIBTHEORA_ENCODER ?
|
|
AV_CODEC_ID_THEORA : AV_CODEC_ID_VP8,
|
|
.init = ogg_init,
|
|
.write_header = ogg_write_header,
|
|
.write_packet = ogg_write_packet,
|
|
.write_trailer = ogg_write_trailer,
|
|
.deinit = ogg_free,
|
|
.flags = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH,
|
|
.priv_class = &ogv_muxer_class,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_SPX_MUXER
|
|
OGG_CLASS(spx, Ogg Speex)
|
|
AVOutputFormat ff_spx_muxer = {
|
|
.name = "spx",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Ogg Speex"),
|
|
.mime_type = "audio/ogg",
|
|
.extensions = "spx",
|
|
.priv_data_size = sizeof(OGGContext),
|
|
.audio_codec = AV_CODEC_ID_SPEEX,
|
|
.init = ogg_init,
|
|
.write_header = ogg_write_header,
|
|
.write_packet = ogg_write_packet,
|
|
.write_trailer = ogg_write_trailer,
|
|
.deinit = ogg_free,
|
|
.flags = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
|
|
.priv_class = &spx_muxer_class,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_OPUS_MUXER
|
|
OGG_CLASS(opus, Ogg Opus)
|
|
AVOutputFormat ff_opus_muxer = {
|
|
.name = "opus",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Ogg Opus"),
|
|
.mime_type = "audio/ogg",
|
|
.extensions = "opus",
|
|
.priv_data_size = sizeof(OGGContext),
|
|
.audio_codec = AV_CODEC_ID_OPUS,
|
|
.init = ogg_init,
|
|
.write_header = ogg_write_header,
|
|
.write_packet = ogg_write_packet,
|
|
.write_trailer = ogg_write_trailer,
|
|
.deinit = ogg_free,
|
|
.flags = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH,
|
|
.priv_class = &opus_muxer_class,
|
|
};
|
|
#endif
|