[gst-devel] Scheduling Problem

[kodam naga]

Hi,

how the pullreader tries to get data from the push reader and push it
downstream?... There should be a loop running on its sink pad to do so
(by doing a get_range upstream )

yes, in pullreader sinkpad have the pull_range  function
which will call pushreader set_getrange function.
Loop function is running on pullreader sinkpad.

Is the get_range from alsasink, (I m not sure though because, normally
the upstream elements push data to alsasink)  proxied to the push
reader?

No, get_range from pullreader.
In loop function, i am  pushing data to alsasink using pad_push.

Thanks
Nagaraju K

On Tue, Jul 28, 2009 at 5:23 AM, ved kpl <ved.kpl at gmail.com> wrote:

> how the pullreader tries to get data from the push reader and push it
> downstream?... There should be a loop running on its sink pad to do so
> (by doing a get_range upstream )
> Is the get_range from alsasink, (I m not sure though because, normally
> the upstream elements push data to alsasink)  proxied to the push
> reader?
>
> On 7/28/09, ved kpl <ved.kpl at gmail.com> wrote:
> > Did you implement the the appropriate activate_push () and
> > _activate_pull() functions?
> >
> > On 7/28/09, raju03e <raju01e at gmail.com> wrote:
> >>
> >> Hi,
> >>
> >> I am a newbee to gstreamer. I am trying to explore about push and pull
> >> based
> >> scheduling in gstreamer.
> >>
> >> I wrote pushreader, pullreader plugins.
> >>
> >> In pushreader - sink pad is exposed with chain function, src pad with
> >> set_getrange function. In chain function whatever data got from alsasrc,
> >> I
> >> stored that buffer into plugin internal buffer. Getrange function is
> >> using
> >> this internal buffer.
> >>
> >> In pullreader – sink pad is exposed with getrange function, it tries to
> >> get
> >> data from pushreader and push that data to alsasink.
> >>
> >> Pipeline is alsasrc ! pushreader ! pullreader ! Alsasink
> >>
> >> When I tried to execute the above pipeline, only getrange is scheduling,
> >> Chain function is not scheduling.
> >>
> >> Please help me to solve this problem.
> >>
> >> Thanks
> >> Nagaraju K
> >> --
> >> View this message in context:
> >> http://www.nabble.com/Scheduling-Problem-tp24693862p24693862.html
> >> Sent from the GStreamer-devel mailing list archive at Nabble.com.
> >>
> >>
> >>
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-- 
Nagaraju K
Software Engineer
Aricent Communications
9886490554
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