Newbie query: Boilerplate code created by gst-element-maker does not compile

[Mandeep Sandhu]

On Thu, Nov 1, 2012 at 6:02 PM, Krzysztof Konopko
<krzysztof.konopko at youview.com> wrote:
> Have you tried it with GStreamer-1.0? There might be some subtle

Nopes. Haven't tried gstreamer 1.0 yet. I guess I'll have to build
that from source

> differences as the guide is updated to conform to GStreamer-1.0.

Actually, leaving that 'NOTE' which asks the user to try
gst-element-maker, the rest of the docs seem to refer to the old
gstreamer (I might be wrong though). Some of the code snippets in the
manual don't _exactly_ match the boilerplate code generated by the old
'make_element' tool. Or maybe it's the other way around, i.e the code
snippet is from the newer gst-element-maker! :)


>
> It worked for me with GStreamer-1.0 without a hitch (just make sure you
> use "myfilter" consistently (rather than "my_filter").

Good point. I'll look into thie name's usage in my code.

Thanks,
-mandeep

>
> Kris
>
> On 31/10/12 10:55, Mandeep Sandhu wrote:
>> Anyone?
>>
>> How does one make an existing gstreamer package (installed in Ubuntu
>> 12.10) recognize/register a custom plugin?
>>
>> Thanks,
>> -mandeep
>>
>>
>> On Mon, Oct 29, 2012 at 7:13 PM, Mandeep Sandhu
>> <mandeepsandhu.chd at gmail.com> wrote:
>>> Hi All,
>>>
>>> I'm newbie who's recently jumped into playing around with GStreamer.
>>>
>>> I have gone through "GStreamer Application Development Manual" to get
>>> a basic idea of the various Gstreamer concepts. Currently, I'm reading
>>> the "GStreamer Plugin Writer's Guide (1.0.2)" to get a very basic
>>> plugin working (only for my own understanding).
>>>
>>> For creating the basic template of a plugin, I was using the
>>> "make_element" tool which comes along with the gst-template repo.
>>>
>>> The template code created by this tool compiles fine, however it does
>>> not get recognized when I try to use it a sample pipeline. I construct
>>> the pipline as follows (after building the plugin):
>>>
>>> $ gst-launch-0.10 -v
>>> --gst-plugin-path=/home/mandeep/work/gstreamer/gst-template/gst-plugin/src/.libs/
>>> fakesrc ! myfilter ! fakesink silent=TRUE
>>> WARNING: erroneous pipeline: no element "myfilter"
>>> $
>>>
>>> Somehow, my plugin is not 'registered' with gstreamer. Any idea how to
>>> get this working?
>>>
>>> The plugin guide has a "NOTE" that states one should use
>>> "gst-element-maker" from the gst-plugins-bad repo. However, the
>>> template code created by this tool does not compile. Here's what I
>>> did:
>>>
>>> $ gst-element-maker MyFilter basesink
>>> ../../../gst-plugins-bad/tools/gst-element-maker: 376:
>>> ../../../gst-plugins-bad/tools/gst-element-maker: gst-indent: not
>>> found
>>> pkg is gstreamer-base-0.10
>>> gstmyfilter.c: In function ‘gst_myfilter_base_init’:
>>> gstmyfilter.c:109:3: warning: implicit declaration of function
>>> ‘gst_element_class_set_static_metadata’
>>> [-Wimplicit-function-declaration]
>>> gstmyfilter.c: At top level:
>>> gstmyfilter.c:324:1: error: ‘myfilter’ undeclared here (not in a function)
>>>
>>> Any idea how to fix this error?
>>>
>>> The files generated by the above command are: gstmyfilter.h and
>>> gstmyfilter.c (I have altered Makefile.am accordingly to add these 2
>>> new files for building.
>>>
>>> Regards,
>>> -mandeep
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>
>
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel