Re: [Tracker] Add support for OMA DRM Content format

[Martyn Russell <martyn lanedo com>]

On 18/02/11 09:00, Aleksander Morgado wrote:
> Hi Amanda,
>
> First, why do you write your emails twice? :-/
>
>
> > I want to add support for OMA DRM Content Format (DCF), an encrypted
> > file format. Here is my solution:
> >
> > (1) I've registered *.dcf files in shared-mime-info, MIME type is
> > "application/vnd.oma.drm.content".
> >
> >
> >
> > (2) We developed a DRM-aware GStreamer file source plug-in that can
> > decrypt the protected content. So GStreamer can play the content and
> > extract meta data from it. This means the GStreamer extractor can be
> > re-used to extract metadata.
>
> Just wondering, why not just add "application/vnd.oma.drm.content" to
> the list of mimetypes the gstreamer extractor can handle?
>
> http://git.gnome.org/browse/tracker/tree/src/tracker-extract/tracker-extract-gstreamer.c#n142

We don't usually do that for generic extractors because it depends on 
their extensions. GStreamer may or may not have the extension installed 
to deal with this format.

Plus we write our own extractors if generic ones aren't fast enough - so 
I don't think it is necessarily a bad thing having a specific extractor 
for this case.

--
Regards,
Martyn