[gst-devel] Bug in osxaudiosrc? (Mac OS 10.5.5)

[Sjoerd Op 't Land]

Hello all,

I am new to gstreamer, so please forgive me if the errors encountered  
are due to my inexperience. I am running Mac OS 10.5.5 on a MacBook  
Core 2 Duo and I compiled gstreamer, gst-plugins-base and gst-plugins- 
good from cvs (0.10.21.1).

To start off, I wanted to create an audio loopthrough. First, I tried  
to get the output to work. With a little modification, I was able to  
produce a sine:

 > gst-launch audiotestsrc ! audioconvert ! audio/x-raw- 
float,channels=2,width=32,depth=32 ! osxaudiosink

(My first attempt failed, I don't know whether this is expected  
behaviour:
 > gst-launch audiotestsrc ! osxaudiosink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
ERROR: from element /GstPipeline:pipeline0/ 
GstAudioTestSrc:audiotestsrc0: Internal data flow error.
Additional debug info:
gstbasesrc.c(2292): gst_base_src_loop (): /GstPipeline:pipeline0/ 
GstAudioTestSrc:audiotestsrc0:
streaming task paused, reason not-negotiated (-4)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
FREEING pipeline ...)

The reason I am mailing you, is that I can't seem to get osxaudiosrc  
to function, tried various stream types and convert/resample options.  
The command line suggested in the source code unfortunately does not  
function:

 > gst-launch -v -m osxaudiosrc ! fakesink
Setting pipeline to PAUSED ...
ERROR: Pipeline doesn't want to pause.
Got Message from element "fakesink0" (state-changed): GstMessageState,  
old-state=(GstState)GST_STATE_NULL, new- 
state=(GstState)GST_STATE_READY, pending- 
state=(GstState)GST_STATE_VOID_PENDING;
Got Message from element "osxaudiosrc0" (state-changed):  
GstMessageState, old-state=(GstState)GST_STATE_NULL, new- 
state=(GstState)GST_STATE_READY, pending- 
state=(GstState)GST_STATE_VOID_PENDING;
Got Message from element "pipeline0" (state-changed): GstMessageState,  
old-state=(GstState)GST_STATE_NULL, new- 
state=(GstState)GST_STATE_READY, pending- 
state=(GstState)GST_STATE_PAUSED;
Got Message from element "osxaudiosrc0" (error): GstMessageError,  
gerror=(GstGError)(NULL), debug=(string)"gstbasesrc.c\(2484\):\  
gst_base_src_start\ \(\):\ /GstPipeline:pipeline0/ 
GstOsxAudioSrc:osxaudiosrc0:\012Check\ your\ filtered\ caps\,\ if\ any";
ERROR: from element /GstPipeline:pipeline0/ 
GstOsxAudioSrc:osxaudiosrc0: Could not negotiate format
Additional debug info:
gstbasesrc.c(2484): gst_base_src_start (): /GstPipeline:pipeline0/ 
GstOsxAudioSrc:osxaudiosrc0:
Check your filtered caps, if any
Setting pipeline to NULL ...
FREEING pipeline ...

Thanks in advance for any suggestions. Again, I apologise beforehand  
if this is an error of mine, due to my inexperience with GStreamer.

Best regards,
Sjoerd Op 't Land