Re: [Openexr-devel] Copying an exr header excluding the channelList

[Jeff Clifford]

Hi Florian,

Doing it that way makes sense.

Thanks for your help!

Cheers,

Jeff.

Florian Kainz wrote:
> Hi Jeff,
>
> you should be able to replace the channel list in a header
> with an assignment:
>
>     ChannelList channels;
>     channels.insert (...);
>     ...
>
>     header.channels() = channels;
>
> Class ChannelList has no method for deleting a channel.
> Deleting or renaming a channel must be done by copying
> the ChannelList.
>
> Adding "erase" and "rename" methods to class ChannelList
> shouldn't be difficult.  It is kind of surprising that
> - as far as I can tell - nobody else has ever asked for
> this functionality.
>
> Florian
>
>
> Jeff Clifford wrote:
> > Hi,
> >
> > Does anyone know if there is an easy way to copy across an exr header 
> > without copying across the channellist as part of that?
> >
> > I need to change the channel names e.g. __depth.r so that they are 
> > moved into a view for an sxr - i.e. the channelname becomes 
> > __depth.left.r
> >
> > It would be really easy if I could do the header copy and then either 
> > remove the channellist from the object (and then create a new one) or 
> > change the channel names in place but looking through the headers 
> > that doesn't look possible - you can only insert channels.
> >
> > I'm thinking there must be an easier way of doing this rather than 
> > somehow iterating over every header attribute and copying each one 
> > across.
> >
> > Thanks,
> >
> > Jeff.
> >
> >
> > _______________________________________________
> > Openexr-devel mailing list
> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/openexr-devel