Re: [FFmpeg-devel] [PATCH 1/2] avformat/mxfenc: allow more bits for variable part in uuid generation

["Tomas Härdin" <tjoppen@acc.umu.se>]

mån 2022-03-14 klockan 20:57 +0100 skrev Marton Balint:
> 
> 
> On Mon, 14 Mar 2022, Tomas Härdin wrote:
> 
> > mån 2022-03-14 klockan 19:49 +0100 skrev Marton Balint:
> > > Also make sure we do not change the product UID.
> > > 
> > > Signed-off-by: Marton Balint <cus@passwd.hu>
> > > ---
> > >  libavformat/mxfenc.c                    | 9 +++++----
> > >  tests/ref/fate/copy-trac4914            | 2 +-
> > >  tests/ref/fate/mxf-d10-user-comments    | 6 +++---
> > >  tests/ref/fate/mxf-opatom-user-comments | 2 +-
> > >  tests/ref/fate/mxf-reel_name            | 2 +-
> > >  tests/ref/fate/mxf-user-comments        | 2 +-
> > >  tests/ref/fate/time_base                | 2 +-
> > >  tests/ref/lavf/mxf                      | 6 +++---
> > >  tests/ref/lavf/mxf_d10                  | 2 +-
> > >  tests/ref/lavf/mxf_dv25                 | 2 +-
> > >  tests/ref/lavf/mxf_dvcpro50             | 2 +-
> > >  tests/ref/lavf/mxf_opatom               | 2 +-
> > >  tests/ref/lavf/mxf_opatom_audio         | 2 +-
> > >  13 files changed, 21 insertions(+), 20 deletions(-)
> > > 
> > > diff --git a/libavformat/mxfenc.c b/libavformat/mxfenc.c
> > > index 1e87dc6111..ba8e7babfb 100644
> > > --- a/libavformat/mxfenc.c
> > > +++ b/libavformat/mxfenc.c
> > > @@ -227,7 +227,8 @@ static const UID mxf_d10_container_uls[] = {
> > >      {
> > > 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,
> > > 0x01
> > > ,0x06,0x01 }, // D-10 525/50 NTSC 30mb/s
> > >  };
> > >  
> > > -static const uint8_t uuid_base[]            = {
> > > 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
> > > +static const uint8_t product_uid[]          = {
> > > 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd,0x00,
> > > 0x0c
> > > ,0x00,0x02};
> > 
> > Maybe use Identification instead of 0x0C.
> 
> Actually I'd rather keep it 0x0C, Identification value might change
> (if 
> MXFMetadataSetType enum is reordered in mxf.h), and we don't want 
> ProductUID to change even then...

Good point

/Tomas

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