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/*
* MXF muxer
* Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
*
* This file is part of FFmpeg.
*
* FFmpeg 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,
* 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
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* References
* SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
* SMPTE 377M MXF File Format Specifications
* SMPTE 379M MXF Generic Container
* SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
* SMPTE RP210: SMPTE Metadata Dictionary
* SMPTE RP224: Registry of SMPTE Universal Labels
*/
//#define DEBUG
static const MXFCodecUL *mxf_get_essence_container_ul(enum CodecID type)
{
const MXFCodecUL *uls = mxf_essence_container_uls;
while (uls->id != CODEC_ID_NONE) {
if (uls->id == type)
break;
uls++;
}
return uls;
}
static void mxf_free(AVFormatContext *s)
{
MXFContext *mxf = s->priv_data;
AVStream *st;
int i;
av_freep(&mxf->reference.identification);
av_freep(mxf->reference.package);
av_freep(&mxf->reference.package);
av_freep(&mxf->reference.content_storage);
for (i = 0; i < s->nb_streams; i++) {
st = s->streams[i];
av_freep(&st->priv_data);
}
av_freep(mxf->reference.sub_desc);
av_freep(&mxf->reference.sub_desc);
av_freep(&mxf->reference.mul_desc);
av_freep(&mxf->essence_container_uls);
}
static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)
{
const MXFDataDefinitionUL *uls = mxf_data_definition_uls;
while (uls->type != CODEC_TYPE_DATA) {
if (type == uls->type)
break;
uls ++;
}
return uls;
}
static int mux_write_packet(AVFormatContext *s, AVPacket *pkt)
{
ByteIOContext *pb = s->pb;
AVStream *st = s->streams[pkt->stream_index];
MXFStreamContext *sc = st->priv_data;
put_buffer(pb, sc->track_essence_element_key, 16); // write key
klv_encode_ber_length(pb, pkt->size); // write length
put_buffer(pb, pkt->data, pkt->size); // write value
put_flush_packet(pb);
return 0;
}
AVOutputFormat mxf_muxer = {
"mxf",
NULL_IF_CONFIG_SMALL("Material eXchange Format"),
NULL,
"mxf",
sizeof(MXFContext),
CODEC_ID_PCM_S16LE,
CODEC_ID_MPEG2VIDEO,
mux_write_header,
mux_write_packet,
mux_write_footer,
};
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