[gst-devel] state change

[Eric Zhang]

Hi, gstreamer-devel:

    Did you override the `change_state' function pointer in your element's
`_class_init' function?

Eric Zhang

2008/11/13 arnabsamanta <arnabsamanta at tataelxsi.co.in>

>  Hi All,
>        during state change of my plug in i am calling a function
> QUEUE3_De_Init()
> but its not getting called .
>        QUEUE3_De_Init() de-initializes all the initialized variables in the
> code.
>        the implementation is as such
>
>         static GstStateChangeReturn gst_queue3_change_state (GstElement *
> element,
> GstStateChange transition)
>        {
>        Gstqueue3 *queue3;
>        abuffer = GST_QUEUE3 (element);
>
>        GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
>
>        switch (transition) {
>                case GST_STATE_CHANGE_NULL_TO_READY:
>                        break;
>                case GST_STATE_CHANGE_READY_TO_PAUSED:
>                        break;
>                case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
>                        break;
>                default:
>                        break;
>        }
>
>        ret = GST_ELEMENT_CLASS (parent_class)->change_state (element,
> transition);
>
>        switch (transition) {
>                case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
>
>                        break;
>                case GST_STATE_CHANGE_PAUSED_TO_READY:
>                        break;
>                case GST_STATE_CHANGE_READY_TO_NULL:
>                        QUEUE3_De_Init();
>                        break;
>                default:
>                        break;
>        }
>
>
>        So,
>        can please somebody tell me how and where I can call the function
> when am
> changing the state of the pipeline ?
>
>  Regards,
>        Arnab
>
>
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