<HTML> <HEAD> <META content="text/html; charset=big5" http-equiv=Content-Type> <META content="OPENWEBMAIL" name=GENERATOR> </HEAD> <BODY bgColor=#ffffff> 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 <<a href="mailto:wdhung@vaplab.ee.ncu.edu.tw">wdhung@vaplab.ee.ncu.edu.tw</a>> wrote: > <blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">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. > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > <a href="http://moblin-contest.org/redirect.php?banner_id=100&url=/" target="_blank">http://moblin-contest.org/redirect.php?banner_id=100&url=/</a> > _______________________________________________ > gstreamer-devel mailing list > <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> > <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> > </blockquote> > > -- > Regards, > > Sudarshan Bisht </BODY> </HTML>