[gst-devel] querry: pad error while inspecting a plugin

[ved kpl]

Hi,

You can refer to any existing plugins. eg gstqueue.c in
gstreamer/plugins/elements

Ved

On Wed, Oct 8, 2008 at 12:09 PM, arnabsamanta
<arnabsamanta at tataelxsi.co.in> wrote:
> Hi ved,
>
>        Thanks for the reply.
>        I have included the following lines in my _init() already. Please tell me
> if i need to add any thing more .
>
>        static void gst_queue3_init (GstQueue3 *queue3, GstQueue3Class * gclass)
>        {
>
>                queue3->srcpad = gst_pad_new_from_template ((void *)&src_factory, "src" );
>                .
>                .
>                .
>                .
>
>                gst_element_add_pad (GST_ELEMENT (queue3), queue3->srcpad);
>        }
>
>        And i have figured out the rason for the segmantation error.
>        the macro assertion : GST_IS_PAD(pad) is failing in all the functions . My
> understanding is its due to the fact that       the pad is not created. but am
> not sure as i dint get any documentataion of the macro.
>        So is my understanding correct ? if wrong , then please correct me.
>
>  Regards,
>        ~Arnab
>
>
>
>
>
> -----Original Message-----
> From: ved kpl [mailto:ved.kpl at gmail.com]
> Sent: Wednesday, October 08, 2008 11:29 AM
> To: arnabsamanta at tataelxsi.co.in; Discussion of the development of
> GStreamer
> Subject: Re: [gst-devel] querry: pad error while inspecting a plugin
>
>
> Hi
>
> You are creating the pad dynamically , then. If you want the pads to
> be "ALWAYS" ,
> create them in your *queue3_init().
>
> Ved
>
> On Wed, Oct 8, 2008 at 10:11 AM, arnabsamanta
> <arnabsamanta at tataelxsi.co.in> wrote:
>> Hi ,
>>        I have written a plug-in and have successfully installed it in the
>> gstreamer package available in my system.
>>        when am running gst-inspect , am able to view my plugin queue3.
>>        when am running the command
>>                         gst-inspect queue3
>>        I am getting the following displayed
>>
>>        .
>>        .
>>        .
>>
>>        Pad Templates:
>>        SRC template: 'src'
>>        Availability: Always
>>        Capabilities:
>>      ANY
>>
>>
>>        Element Flags:
>>        no flags set
>>
>>        Element Implementation:
>>        Has change_state() function: gst_queue3_change_state
>>        Has custom save_thyself() function: gst_element_save_thyself
>>        Has custom restore_thyself() function: gst_element_restore_thyself
>>
>>        Element has no clocking capabilities.
>>        Element has no indexing capabilities.
>>        Element has no URI handling capabilities.
>>
>>        Pads:
>>                none
>>
>>        .
>>        .
>>        .
>>
>>        My concern is why the src pad is not shown here ?
>>        to my understandings its not created. If so what am i supposed to
> do to
>> irradicate this error ?
>>
>>
>>        and the last error am getting  is
>>                 (gst-inspect-0.10:15886): GLib-GObject-WARNING **: invalid
> class cast
>> from (NULL) pointer to `GObject'
>>                        Segmentation fault
>>
>>        Can some one pleasse tell me what is the problem and how can i
> solve it ?
>>
>>  Thanks and Regards,
>>        ~Arnab
>>
>>
>>
>>
>>
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