Eric Jonas wrote:
[continuing on gtkmm-list]
Do you anticipate it being possible to use elements written in c++ from
gstreamer pipelines in other languages (C, python, etc) ? I imagine the
dealing with the complexity of C++ name mangling, lifecycle complexity,
and ABI would make this difficult.
Yes I think this is right; I don't think it's possible to write
GStreamer plugins in c++. The GstPlugin
<http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstPlugin.html>
API explains (in the description) that a GstPluginDesc
<http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstPlugin.html#GstPluginDesc>
called "gst_plugin_desc" must be exported by the developer and then
write the necessary plugin code. We would have to find a way to use a
slot in the GstPluginDesc for the GstPluginInitFunc
<http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstPlugin.html#GstPluginInitFunc>
(a pointer to a plugin init function) and I'm not sure how we would go
about this (partly because to start with we would need for the
GstPluginInitFunc type to have an additional gpointer* parameter).
Also, as you say, the gstreamermm library initialization and lifecycle
of objects is something that we would most probably have to pay
attention to. I've been thinking about all this a bit since you asked,
and presently this doesn't seem possible, though I may think about it a
bit more and make a definite determination later (God willing). Right
now, I'd suggest not to plan on writing c++ plugins until this is made
definite. Does this help?
--
José Alburquerque
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