[gst-devel] Seeking failed with decoder plugin

[sudarshan bisht]

Hi ,
        Can u tell me how you are creating filter instance in src_event
function .

On Thu, Nov 27, 2008 at 3:29 PM, Wei-Di Hung <wdhung at vaplab.ee.ncu.edu.tw>wrote:

> Yes, I use ffdemux_avi here.
>  > Hi ,,
> >       Are you using demuxer also in pipeline ?
> >
> > On Thu, Nov 27, 2008 at 3:01 PM, Wei-Di Hung <
> wdhung at vaplab.ee.ncu.edu.tw> wrote:
> >
>>
>> Hi,
>> > I'm writing a plugin for HW video decoder,
>> > functions of playing, pause and stop have been verified.
>> >
>> > While seeking, the pipeline ran until the frame of seeking time
>> > was decoded, i.e, it did jump to the target frame, but the test
>> > program crashed then.
>> >
>> > Here are messages shown after the sink pad received
>> GST_EVENT_NEW_SEGMENT:
>> > (player:886): GStreamer-CRITICAL **:
>> > Trying to dispose element decoder, but it is not in the NULL state.
>> > You need to explicitly set elements to the NULL state before
>> > dropping the final reference, to allow them to clean up.
>> >
>> > (player:886): GLib-GObject-CRITICAL **: g_object_ref: assertion
>> `G_IS_OBJECT
>> > (object)' failed
>> >
>> > After these message, it seemed the HW keep decoding from the paused
>> frame to
>> > the target frame. but the intermediate frames were not displayed.
>> >
>> > Before decoding of each frame, came up the folloing message:
>> > (player:886): GLib-GObject-WARNING **: invalid unclassed pointer in cast
>> to
>> > `Gstvideodec'
>> >
>> > These are part of codes in sink event handler,
>> > the format is GST_FORMAT_TIME in this case,
>> >
>> >    case GST_EVENT_NEWSEGMENT:
>> >        {
>> >            GstFormat format;
>> >            gint64 start, stop, position;
>> >            gdouble rate;
>> >
>> >             gst_event_parse_new_segment(event, NULL, &rate, &format,
>> >                                        &start, &stop, &position);
>> >
>> >            if (GST_FORMAT_TIME == format) {
>> >                result = gst_pad_push_event(filter->srcpad, event);
>> >            } else {
>> >                   ... ...
>> >            }
>> >             break;
>> >        }
>> >
>> > Below are part of codes in source event handler:
>> >
>> >    switch (GST_EVENT_TYPE(event)) {
>> >    case GST_EVENT_SEEK:
>> >        res = gst_pad_push_event(filter->sinkpad, event);
>> >        break;
>> >    case GST_EVENT_NAVIGATION:
>> >    default:
>> >        res = gst_pad_push_event(filter->sinkpad, event);
>> >        break;
>> >    }
>> >
>> >     gst_object_unref(filter);
>> >    return res;
>> >
>> > Could someone help me finding possible root cause?
>> > Thanks in advance.
>> >
>> >
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>
>
> >
>
> > --
> > Regards,
> >
> > Sudarshan Bisht
>
>
>
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-- 
Regards,

Sudarshan Bisht
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