[gst-devel] appsrc and appsink elements

[Andres Colubri]

Hey Jure, many thanks for the info.

I compiled libgstapp from source, and then copied libgstapp.so to 
/usr/lib/gstreamer-0.10. After creating the symbolic links 
libgstapp-0.10.so.0.0.0,  libgstapp-0.10.so.0  and libgstapp-0.10.so, 
the appsrc and appsking plugins are found by gst-inspect, and also the 
examples work now.

Jure Zitnik wrote:
> Hi Andres,
> The appsrc and appsink are not part of the binary gstreamer-plugins-bad 
> package on ubuntu 8.10 (reasoning is that they "still randomly change 
> API and ABI" :-)
> But you can always build them from source:
> apt-get source gstreamer0.10-plugins-bad
> cd gst-plugins-bad0.10-0.10.5 (you might need to cange the version here)
> ./configure
> make
>
> After successful build, you can copy required shared libraries manually 
> (if you just need appsrc/appsink) as follows:
> cp gst/app/.libs/libgstapp.so /usr/lib/gstreamer-0.10/
> cp gst-libs/gst/app/.libs/libgstapp-0.10.so.0.0.0  /usr/local/lib
> You might need to create additional symbolic links in /usr/local/lib 
> (both linking to libgstapp-0.10.so.0.0.0) : libgstapp-0.10.so.0 and 
> libgstapp-0.10.so
>
> Now use gst-inspect to see if everything works fine...
>
> Jure
>
> Andres Colubri wrote:
>   
>> Hello,
>>
>> I have tried to use appsrc, but for some reason it doesn't seem to be
>> recognized (I'm using gst-plugins-bad 0.10.8 on ubuntu 0.8.10) by
>> gstreamer. For example, when I run the appsrc_ex example, I get an
>> assertion error right after
>> app->src = gst_element_factory_make("appsrc", NULL);
>> so seems that app->src is null
>>
>> Also, gst-inspect doesn't find neither appsrc nor appsink.
>>
>> Thanks
>> Andres
>>
>> Wim Taymans wrote:
>>   
>>     
>>> On Wed, 2008-07-30 at 12:03 +0200, David SIORPAES wrote:
>>>
>>>     
>>>       
>>>> Hello,
>>>>
>>>> I would like to exchange buffers which are allocated and managed by an
>>>> application of mine to and from a GStreamer pipeline.
>>>>
>>>> By reading the documentation it looks like the appsrc/appsink are the
>>>> solution for me, but I am also reading here
>>>> http://gstreamer.freedesktop.org/data/doc/gstreamer/head/manual/html/section-data-spoof.html
>>>> that
>>>>
>>>> "New API is being developed at the moment to make data insertion and
>>>> extraction less painful for applications. It can be found as GstAppSrc
>>>> and GstAppSink in the gst-plugins-bad module. At the time of writing
>>>> (October 2007), this API is not quite stable and ready yet, even though
>>>> it may work fine for your purposes."
>>>>
>>>> So, may I ask whether it is safe to use such elements or not ? Or are
>>>> there alternative solutions ?
>>>>
>>>>       
>>>>         
>>> The versionsof appsink/appsrc in the latest release of gst-plugins-bad
>>> are full-featured and ready for consumption. See
>>> http://webcvs.freedesktop.org/gstreamer/gst-plugins-bad/examples/app/
>>> for a whole bunch of examples of different use cases.
>>>
>>> Wim
>>>
>>>     
>>>       
>>>> Thanks,
>>>>
>>>> David S.
>>>>
>>>>
>>>>
>>>>
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