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avformat/mxf: add platform local tag

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Please check the string of platform with below command:
./ffmpeg -i ../fate-suite/mxf/Sony-00001.mxf -c:v copy -c:a copy out.mxf
./ffmpeg -i out.mxf
....
application_platform: Lavf (linux)

Reviewed-by: Tomas Härdin <tjoppen@acc.umu.se>
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
This commit is contained in:
Limin Wang 2021-02-02 07:17:44 +08:00
parent 3f8db7eea0
commit 9605307e78
14 changed files with 19 additions and 14 deletions
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4
libavformat/mxfenc.c
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@ -752,12 +752,14 @@ static void store_version(AVFormatContext *s){
avio_wb16(pb, 0); // release
}
#define PLATFROM_IDENT "Lavf " AV_STRINGIFY((OS_NAME))
static void mxf_write_identification(AVFormatContext *s)
{
MXFContext *mxf = s->priv_data;
AVIOContext *pb = s->pb;
const char *company = "FFmpeg";
const char *product = s->oformat != &ff_mxf_opatom_muxer ? "OP1a Muxer" : "OPAtom Muxer";
const char *platform = s->flags & AVFMT_FLAG_BITEXACT ? "Lavf" : PLATFROM_IDENT;
const char *version;
int length;
@ -768,6 +770,7 @@ static void mxf_write_identification(AVFormatContext *s)
"0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
length = 100 +mxf_utf16_local_tag_length(company) +
mxf_utf16_local_tag_length(product) +
mxf_utf16_local_tag_length(platform) +
mxf_utf16_local_tag_length(version);
klv_encode_ber_length(pb, length);
@ -786,6 +789,7 @@ static void mxf_write_identification(AVFormatContext *s)
store_version(s);
mxf_write_local_tag_utf16(s, 0x3C04, version); // Version String
mxf_write_local_tag_utf16(s, 0x3C08, platform); // Platform
// write product uid
mxf_write_local_tag(s, 16, 0x3C05);