GstMeta writers guide?
John P Poet
jppoet at gmail.com
Fri Nov 11 07:56:07 UTC 2016
Is there a writers guide for GstMeta somewhere? I found
https://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMeta.html
But I need more than just a description of the API. For example
GstMetaTransformFunction() says:
Function called for each *meta* in *buffer* as a result of performing a
transformation on *transbuf* . Additional *type* specific transform data is
passed to the function as *data* .
Implementations should check the *type* of the transform and parse
additional type specific fields in *data* that should be used to update the
metadata on *transbuf* .
Okay, but...
*What* is a tranformation?
*What* would invoke a transformation?
*What* are the possible transformation types, and what do they mean?
*What* is passed in data? It says 'type specific' but what does that mean?
Is there a "writers guide" for GStreamer anywhere that answers questions
like this?
Thanks,
John
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