[gst-devel] V4L2SINK development?

Stefan Kost ensonic at hora-obscura.de
Tue Aug 7 13:19:05 CEST 2007


Juuso Räsänen wrote:
> Any tips how I should start the Gstreamer part??  Copy/modify some existing sink element (e.g. filesink?) or create totally from scratch?
> I'm quite a novice in gstreamer development... :(  I tried to start from Gst plugin template but got in stuck already when changing GST_BOILERPLATE macro to:
> GST_BOILERPLATE (Gstv4l2sink, gst_v4l2sink, GstBaseSink,
> After that I receive the following error with gst-inspect:
> (gstinsp:32029): GStreamer-WARNING **: Failed to load plugin '/home/rasanen/gstreamer/install/lib/gstreamer-0.10/libgstplugin.so': /home/rasanen/gstreamer/install/lib/gstreamer-0.10/libgstplugin.so: undefined symbol: gst_base_sink_get_type
> No such element or plugin 'v4l2sink'

The cause for this is that you need to links against the baselibs (add
$(GST_BASE_LIBS)  to xxx_la_LIBADD in you Makefile.am). Its a good idea to look
at the code and build stuff of a similar plugin.


> - Juuso
>> On 8/7/07, Juuso Räsänen  wrote:
>>> is there any current plans for v4l2sink development??  I would be interested in adding gstreamer support for v4l2 output devices.  And probably I could be of help there...
>>> Currently I'm using/developing a custom program for v4l2 output but would like to (sooner or later) transfer this functionality to be a part of Gstreamer...
>>    Whether or not there are plans for it, another nice plugin/element
>> is always welcomed. :)
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