mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
102 lines
2.9 KiB
C
102 lines
2.9 KiB
C
/*
|
|
* 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,
|
|
};
|