[gstreamer-bugs] [Bug 623799] New: [xmp] Configurable xmp output
bugzilla at gnome.org
Wed Jul 7 17:28:44 PDT 2010
GStreamer | gst-plugins-base | git
Summary: [xmp] Configurable xmp output
AssignedTo: gstreamer-bugs at lists.sourceforge.net
ReportedBy: thiago.sousa.santos at collabora.co.uk
QAContact: gstreamer-bugs at lists.sourceforge.net
GNOME target: ---
GNOME version: ---
XMP spec aggregates multiple tag systems/groups, called schemas. Examples:
exif, iptc, photoshop, dublin core...
One use case that isn't covered is to allow applications to select which ones
should be used when serializing a taglist to the streams. This requires working
at 2 levels.
1) Implement a configuration struct/parameter for the xmp lib in
-base/gst-libs/tag, allowing elements to inform which schemas should be used.
2) Implement a way for elements to expose this API to applications.
I haven't started working on this (yet), but I thought it would be nice to
start discussing here so I can start on the correct direction.
The xmp schemas are represented by strings, here are some:
Check http://www.adobe.com/devnet/xmp/pdfs/XMPSpecificationPart2.pdf for more
So I was thinking to have some API to blacklist/whitelist what schemas to use,
this is simple (from the API point of view) of adding to the taglib, but how
should we expose it from elements?
As I don't know any other specs similar to XMP, I think an specific interface
would be nice for configuring it, rather than going the generic way. Do we have
any other options here?
We could also create a GstTagSetter2, but I really can't think of a nice API
that would be able to handle all this generically. Maybe someone out there has
a better idea?
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