[gst-devel] Forcing adder to use audio/x-raw-float

Grant Likely glikely at gmail.com
Fri Feb 4 11:25:14 CET 2005

Thanks Andy!

On Fri, 04 Feb 2005 16:40:39 +0100, Andy Wingo <wingo at pobox.com> wrote:
> Hey Grant,
> On Wed, 2005-02-02 at 14:11 -0700, Grant Likely wrote:
> > I've got an application where I want to force the pipeline to use only
> > audio/x-raw-float when mixing and processing audio.
> Thanks for the test suite. It could be pared down even farther:
> gst-launch sinesrc ! audioconvert ! audio/x-raw-float ! adder ! \
>            audioconvert ! osssink

Good to know; I was trying to use gst-launch for my test app, but I
couldn't figure out how to filter the link between audioconvert and
audio/x-raw-float.  I didn't realize that you could specify the format
directly in the pipeline.

> So the solution is to put a buffer-frames element in the pipeline after
> the audioconvert. BUT, for some reason buffer-frames-convert is broken.
> I fixed it in CVS -- don't know how it ever worked before. (Stefan, that
> was your bug -- try again to see if your app is fixed.)

Brilliant!  It took me a while to figure out how to build and link
from CVS; but it's working for me now.  My test app will compile and
run on my host machine; now I just need to cross-compile it to PPC and


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