Function ogg_write_packet

libavformat/oggenc.c:384–414

}

static int ogg_write_packet(AVFormatContext *s, AVPacket *pkt)
{
    AVStream *st = s->streams[pkt->stream_index];
    OGGStreamContext *oggstream = st->priv_data;
    int ret;
    int64_t granule;

    if (st->codec->codec_id == 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
        granule = pkt->pts + pkt->duration;
    oggstream->duration = granule;

    ret = ogg_buffer_data(s, st, pkt->data, pkt->size, granule);
    if (ret < 0)
        return ret;

    ogg_write_pages(s, 0);

    return 0;
}

static int ogg_write_trailer(AVFormatContext *s)
{