* Ogg muxer
* Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at free dot fr>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/crc.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/opt.h"
#include "libavutil/random_seed.h"
#include "libavcodec/xiph.h"
#include "libavcodec/bytestream.h"
#include "libavcodec/flac.h"
#include "avformat.h"
+#include "avio_internal.h"
#include "internal.h"
#include "vorbiscomment.h"
} OGGPageList;
typedef struct {
+ const AVClass *class;
OGGPageList *page_list;
+ int pref_size; ///< preferred page size (0 => fill all segments)
} OGGContext;
+#define OFFSET(x) offsetof(OGGContext, x)
+#define PARAM AV_OPT_FLAG_ENCODING_PARAM
+
+static const AVOption options[] = {
+ { "pagesize", "preferred page size in bytes",
+ OFFSET(pref_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, MAX_PAGE_SIZE, PARAM },
+ { NULL },
+};
+
+static const AVClass ogg_muxer_class = {
+ .class_name = "Ogg muxer",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
+
static void ogg_update_checksum(AVFormatContext *s, AVIOContext *pb, int64_t crc_offset)
{
- int64_t pos = url_ftell(pb);
- uint32_t checksum = get_checksum(pb);
- url_fseek(pb, crc_offset, SEEK_SET);
- put_be32(pb, checksum);
- url_fseek(pb, pos, SEEK_SET);
+ int64_t pos = avio_tell(pb);
+ uint32_t checksum = ffio_get_checksum(pb);
+ avio_seek(pb, crc_offset, SEEK_SET);
+ avio_wb32(pb, checksum);
+ avio_seek(pb, pos, SEEK_SET);
}
static int ogg_write_page(AVFormatContext *s, OGGPage *page, int extra_flags)
int ret, size;
uint8_t *buf;
- ret = url_open_dyn_buf(&pb);
+ ret = avio_open_dyn_buf(&pb);
if (ret < 0)
return ret;
- init_checksum(pb, ff_crc04C11DB7_update, 0);
- put_tag(pb, "OggS");
- put_byte(pb, 0);
- put_byte(pb, page->flags | extra_flags);
- put_le64(pb, page->granule);
- put_le32(pb, oggstream->serial_num);
- put_le32(pb, oggstream->page_counter++);
- crc_offset = url_ftell(pb);
- put_le32(pb, 0); // crc
- put_byte(pb, page->segments_count);
- put_buffer(pb, page->segments, page->segments_count);
- put_buffer(pb, page->data, page->size);
+ ffio_init_checksum(pb, ff_crc04C11DB7_update, 0);
+ ffio_wfourcc(pb, "OggS");
+ avio_w8(pb, 0);
+ avio_w8(pb, page->flags | extra_flags);
+ avio_wl64(pb, page->granule);
+ avio_wl32(pb, oggstream->serial_num);
+ avio_wl32(pb, oggstream->page_counter++);
+ crc_offset = avio_tell(pb);
+ avio_wl32(pb, 0); // crc
+ avio_w8(pb, page->segments_count);
+ avio_write(pb, page->segments, page->segments_count);
+ avio_write(pb, page->data, page->size);
ogg_update_checksum(s, pb, crc_offset);
- put_flush_packet(pb);
+ avio_flush(pb);
- size = url_close_dyn_buf(pb, &buf);
+ size = avio_close_dyn_buf(pb, &buf);
if (size < 0)
return size;
- put_buffer(s->pb, buf, size);
- put_flush_packet(s->pb);
+ avio_write(s->pb, buf, size);
+ avio_flush(s->pb);
av_free(buf);
oggstream->page_count--;
return 0;
}
static int ogg_buffer_data(AVFormatContext *s, AVStream *st,
- uint8_t *data, unsigned size, int64_t granule)
+ uint8_t *data, unsigned size, int64_t granule,
+ int header)
{
OGGStreamContext *oggstream = st->priv_data;
+ OGGContext *ogg = s->priv_data;
int total_segments = size / 255 + 1;
uint8_t *p = data;
int i, segments, len, flush = 0;
// Handles VFR by flushing page because this frame needs to have a timestamp
- if (st->codec->codec_id == CODEC_ID_THEORA &&
+ if (st->codec->codec_id == AV_CODEC_ID_THEORA && !header &&
ogg_granule_to_timestamp(oggstream, granule) >
ogg_granule_to_timestamp(oggstream, oggstream->last_granule) + 1) {
if (oggstream->page.granule != -1)
if (i == total_segments)
page->granule = granule;
- if (page->segments_count == 255) {
- ogg_buffer_page(s, oggstream);
+ if (!header && (page->segments_count == 255 ||
+ (ogg->pref_size > 0 && page->size >= ogg->pref_size))) {
+ ogg_buffer_page(s, oggstream);
}
}
}
static uint8_t *ogg_write_vorbiscomment(int offset, int bitexact,
- int *header_len, AVMetadata **m, int framing_bit)
+ int *header_len, AVDictionary **m, int framing_bit)
{
- const char *vendor = bitexact ? "ffmpeg" : LIBAVFORMAT_IDENT;
+ const char *vendor = bitexact ? "Libav" : LIBAVFORMAT_IDENT;
int size;
uint8_t *p, *p0;
unsigned int count;
static int ogg_build_flac_headers(AVCodecContext *avctx,
OGGStreamContext *oggstream, int bitexact,
- AVMetadata **m)
+ AVDictionary **m)
{
enum FLACExtradataFormat format;
uint8_t *streaminfo;
uint8_t *p;
- if (!ff_flac_is_extradata_valid(avctx, &format, &streaminfo))
+ if (!avpriv_flac_is_extradata_valid(avctx, &format, &streaminfo))
return -1;
// first packet: STREAMINFO
static int ogg_build_speex_headers(AVCodecContext *avctx,
OGGStreamContext *oggstream, int bitexact,
- AVMetadata **m)
+ AVDictionary **m)
{
uint8_t *p;
return 0;
}
+#define OPUS_HEADER_SIZE 19
+
+static int ogg_build_opus_headers(AVCodecContext *avctx,
+ OGGStreamContext *oggstream, int bitexact,
+ AVDictionary **m)
+{
+ uint8_t *p;
+
+ if (avctx->extradata_size < OPUS_HEADER_SIZE)
+ return -1;
+
+ /* first packet: Opus header */
+ p = av_mallocz(avctx->extradata_size);
+ if (!p)
+ return AVERROR(ENOMEM);
+ oggstream->header[0] = p;
+ oggstream->header_len[0] = avctx->extradata_size;
+ bytestream_put_buffer(&p, avctx->extradata, avctx->extradata_size);
+
+ /* second packet: VorbisComment */
+ p = ogg_write_vorbiscomment(8, bitexact, &oggstream->header_len[1], m, 0);
+ if (!p)
+ return AVERROR(ENOMEM);
+ oggstream->header[1] = p;
+ bytestream_put_buffer(&p, "OpusTags", 8);
+
+ return 0;
+}
+
static int ogg_write_header(AVFormatContext *s)
{
OGGStreamContext *oggstream;
unsigned serial_num = i;
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
- av_set_pts_info(st, 64, 1, st->codec->sample_rate);
+ if (st->codec->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->codec->sample_rate);
else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
- av_set_pts_info(st, 64, st->codec->time_base.num, st->codec->time_base.den);
- if (st->codec->codec_id != CODEC_ID_VORBIS &&
- st->codec->codec_id != CODEC_ID_THEORA &&
- st->codec->codec_id != CODEC_ID_SPEEX &&
- st->codec->codec_id != CODEC_ID_FLAC) {
+ avpriv_set_pts_info(st, 64, st->codec->time_base.num, st->codec->time_base.den);
+ if (st->codec->codec_id != AV_CODEC_ID_VORBIS &&
+ st->codec->codec_id != AV_CODEC_ID_THEORA &&
+ st->codec->codec_id != AV_CODEC_ID_SPEEX &&
+ st->codec->codec_id != AV_CODEC_ID_FLAC &&
+ st->codec->codec_id != AV_CODEC_ID_OPUS) {
av_log(s, AV_LOG_ERROR, "Unsupported codec id in stream %d\n", i);
return -1;
}
oggstream->serial_num = serial_num;
st->priv_data = oggstream;
- if (st->codec->codec_id == CODEC_ID_FLAC) {
+ if (st->codec->codec_id == AV_CODEC_ID_FLAC) {
int err = ogg_build_flac_headers(st->codec, oggstream,
st->codec->flags & CODEC_FLAG_BITEXACT,
&s->metadata);
av_freep(&st->priv_data);
return err;
}
- } else if (st->codec->codec_id == CODEC_ID_SPEEX) {
+ } else if (st->codec->codec_id == AV_CODEC_ID_SPEEX) {
int err = ogg_build_speex_headers(st->codec, oggstream,
st->codec->flags & CODEC_FLAG_BITEXACT,
&s->metadata);
av_freep(&st->priv_data);
return err;
}
+ } else if (st->codec->codec_id == AV_CODEC_ID_OPUS) {
+ int err = ogg_build_opus_headers(st->codec, oggstream,
+ st->codec->flags & CODEC_FLAG_BITEXACT,
+ &s->metadata);
+ if (err) {
+ av_log(s, AV_LOG_ERROR, "Error writing Opus headers\n");
+ av_freep(&st->priv_data);
+ return err;
+ }
} else {
uint8_t *p;
- const char *cstr = st->codec->codec_id == CODEC_ID_VORBIS ? "vorbis" : "theora";
- int header_type = st->codec->codec_id == CODEC_ID_VORBIS ? 3 : 0x81;
- int framing_bit = st->codec->codec_id == CODEC_ID_VORBIS ? 1 : 0;
+ const char *cstr = st->codec->codec_id == AV_CODEC_ID_VORBIS ? "vorbis" : "theora";
+ int header_type = st->codec->codec_id == AV_CODEC_ID_VORBIS ? 3 : 0x81;
+ int framing_bit = st->codec->codec_id == AV_CODEC_ID_VORBIS ? 1 : 0;
- if (ff_split_xiph_headers(st->codec->extradata, st->codec->extradata_size,
- st->codec->codec_id == CODEC_ID_VORBIS ? 30 : 42,
+ if (avpriv_split_xiph_headers(st->codec->extradata, st->codec->extradata_size,
+ st->codec->codec_id == AV_CODEC_ID_VORBIS ? 30 : 42,
oggstream->header, oggstream->header_len) < 0) {
av_log(s, AV_LOG_ERROR, "Extradata corrupted\n");
av_freep(&st->priv_data);
p = ogg_write_vorbiscomment(7, st->codec->flags & CODEC_FLAG_BITEXACT,
&oggstream->header_len[1], &s->metadata,
framing_bit);
+ oggstream->header[1] = p;
if (!p)
return AVERROR(ENOMEM);
- oggstream->header[1] = p;
bytestream_put_byte(&p, header_type);
bytestream_put_buffer(&p, cstr, 6);
- if (st->codec->codec_id == CODEC_ID_THEORA) {
+ if (st->codec->codec_id == AV_CODEC_ID_THEORA) {
/** 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);
for (j = 0; j < s->nb_streams; j++) {
OGGStreamContext *oggstream = s->streams[j]->priv_data;
ogg_buffer_data(s, s->streams[j], oggstream->header[0],
- oggstream->header_len[0], 0);
+ oggstream->header_len[0], 0, 1);
oggstream->page.flags |= 2; // bos
ogg_buffer_page(s, oggstream);
}
for (i = 1; i < 3; i++) {
if (oggstream && oggstream->header_len[i])
ogg_buffer_data(s, st, oggstream->header[i],
- oggstream->header_len[i], 0);
+ oggstream->header_len[i], 0, 1);
}
ogg_buffer_page(s, oggstream);
}
int ret;
int64_t granule;
- if (st->codec->codec_id == CODEC_ID_THEORA) {
+ if (st->codec->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)
pframe_count = 0;
}
granule = (oggstream->last_kf_pts<<oggstream->kfgshift) | pframe_count;
- } else
+ } else if (st->codec->codec_id == AV_CODEC_ID_OPUS)
+ granule = pkt->pts + pkt->duration + av_rescale_q(st->codec->delay, (AVRational){ 1, st->codec->sample_rate }, st->time_base);
+ else
granule = pkt->pts + pkt->duration;
- ret = ogg_buffer_data(s, st, pkt->data, pkt->size, granule);
+ ret = ogg_buffer_data(s, st, pkt->data, pkt->size, granule, 0);
if (ret < 0)
return ret;
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
OGGStreamContext *oggstream = st->priv_data;
- if (st->codec->codec_id == CODEC_ID_FLAC ||
- st->codec->codec_id == CODEC_ID_SPEEX) {
+ if (st->codec->codec_id == AV_CODEC_ID_FLAC ||
+ st->codec->codec_id == AV_CODEC_ID_SPEEX ||
+ st->codec->codec_id == AV_CODEC_ID_OPUS) {
av_free(oggstream->header[0]);
- av_free(oggstream->header[1]);
}
+ av_freep(&oggstream->header[1]);
av_freep(&st->priv_data);
}
return 0;
}
AVOutputFormat ff_ogg_muxer = {
- "ogg",
- NULL_IF_CONFIG_SMALL("Ogg"),
- "application/ogg",
- "ogg,ogv,spx",
- sizeof(OGGContext),
- CODEC_ID_FLAC,
- CODEC_ID_THEORA,
- ogg_write_header,
- ogg_write_packet,
- ogg_write_trailer,
+ .name = "ogg",
+ .long_name = NULL_IF_CONFIG_SMALL("Ogg"),
+ .mime_type = "application/ogg",
+ .extensions = "ogg,ogv,spx,opus",
+ .priv_data_size = sizeof(OGGContext),
+ .audio_codec = AV_CODEC_ID_FLAC,
+ .video_codec = AV_CODEC_ID_THEORA,
+ .write_header = ogg_write_header,
+ .write_packet = ogg_write_packet,
+ .write_trailer = ogg_write_trailer,
+ .priv_class = &ogg_muxer_class,
};
projects / ffmpeg / blobdiff