[gst-devel] How to debug the gstreamer code flow?

[vishy S]

Benjamin,

Thank you for the useful information.

Do you mean to say that the target system should have
the entire Gstreamer framework code to run the
multimedia applications? I believe in compilation time
we can opt the dependent parts of Gstreamer and make
them part of media player application binary file.
Please clarify me on what happens during the
compillation time. Anyway the OS related
dependencies/packages needs to be taken care at the
time of OS installation.

Also as i am new to Linux, I am facing lot of problems
Gstreamer installation. Is there are document that
explains the correct Installation process. Readme is
useful, but a more ellaborate documents on DOs and
Don'ts might be useful. And if there are documents on
using the examples plugins provided will be useful. As
the documents are less new people are kind of needs
more time to begin with Gstreamer.

Als a list of all OS dependencies/packages required by
 a perticular Gstreamer version will be great help.
Once be come comfirtable i think i can write all these
documents. If somebody has done this, please share
with me.

Thank you for your time. I appreciate your
helpfulness.

Regards,
-Vishy

--- Benjamin Otte <in7y118 at public.uni-hamburg.de>
wrote: > GStreamer doesn't do anything without
plugins. Every
> element inside the 
> framework is built as a plugin. You can however just
> use the plugins shipped 
> by the GStreamer core itself, which are test
> plugins, file readers and other 
> generic elements.
> GStreamer has some configure options to
> increase/decrease debugging options. 
> You can enable allocation tracing on compile for
> example or you can disable 
> the whole debugging stuff.
> We have not done any heavy optimizing of our core
> yet. So I'd imagine there 
> being room for improvement. :)
> To profile GStreamer we (or at least I) have used
> the common tools available, 
> like memprof, valgrind, oprofile.
> 
> Benjamin
> 
> 
> Quoting vishy S <vishy_s1976 at yahoo.co.in>:
> 
> > Hello Thomas,
> > 
> > Thank you for the response. 
> > 
> > Here we go :)
> > 
> > Basically I want to evaluate the entire gstreamer
> > core, before i start integrating the Media codecs
> into
> > Gstreamer framework C code. I need to know the
> memory,
> > MIPS and any other overheads that is added by the
> > Gstreamer code to the Media Player application.
> Its
> > true that the documentation says it does not add
> any
> > overhead, but even then i expect overheads by the
> > Gstreamer core practically. So I need to evaluate
> the
> > following with repect to Gstreamer core C code.
> > 
> > 1. Memory and MIPS-> needs profiling, so i need a
> > profiler tools and methods to profile this
> installed
> > code. Problem i see here is, without integrating
> the
> > plugins i need to profile and evaluate. Do you
> suggest
> > any tools and ways to do this? 
> > 
> > 2. I need to eveluate the functionalities of the
> > Gstreamer core. Hence I need to find ways to test
> > other than using gst-launch and without
> integrating
> > the plugins.
> > 
> > 3. I need to check memory leaks and memory
> management
> > by Gstreamer code. Are there any tools?
> > 
> > 4. Can I build a binary of Gstreamer core alone in
> > debug version and start debuggin it? This way i
> can
> > understand the the code flow? Here i tihnk i can
> have
> > the dummy plugins whereever required. Am I
> correct?
> > 
> > I need to evaluate the effort required to make
> this
> > framework fully fit to handle all the multimedia
> > codecs integrated to form a media player
> application.
> > 
> > Thanks and Regards,
> > -vishwa-
> > 
> > 
> > 
> >  --- Thomas Vander Stichele <thomas at apestaart.org>
> > wrote: > Hi,
> > > 
> > > > I need details on the profiling the Gstreamer
> > > core.
> > > 
> > > What exactly do you want to profile ?
> > > 
> > > > Also is the gst-launch is the only way to test
> the
> > > > gstreamer?
> > > 
> > > No, writing apps/using apps works fine too.
> > > 
> > > > I want to undersand the Gstreamer code by
> going
> > > > through the code flow. How do i do this?
> > > 
> > > Well, going through the code flow is a matter of
> > > reading the code :)
> > > It can be helpful to you to read the manual
> first
> > > though, and to read
> > > debug logs for simple gst-launch pipelines.
> > > 
> > > >  What i can
> > > > understand the gstreamer is a Library and can
> be
> > > > included in our code. But if I want to
> > > > optimize/modify, i need to understand the code
> > > flow.
> > > > How will I see the code flow?
> > > > Also how to profile this code. Is it possible
> to
> > > test
> > > > Gstreamer core (no plugins) alone?
> > > 
> > > Sure.  Standard profiling techniques apply.
> > > 
> > > 
> > > Dave/Dina : future TV today ! -
> > > http://www.davedina.org/
> > > <-*- thomas (dot) apestaart (dot) org -*->
> > > Nobody cares when you're gone
> > > <-*- thomas (at) apestaart (dot) org -*->
> > > URGent, best radio on the net - 24/7 ! -
> > > http://urgent.fm/
> > > 
> > >  
> > 
> >
>
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