osssink problem (Output caps are unfixed: EMPTY)

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Hello.

I'm trying to use Gstreamer on my ARM-v4 board and have unknown problems with osssink.

# gst-launch-0.10 filesrc location=1.pcm ! audio/x-raw-int,width=16,depth=16,rate=22050,channels=1,endianness=1234,signed=true ! osssink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
CS4340: Unsupported bitrate 1000.
CS4340: Unsupported bitrate 100000.
CS4340: Unsupported bitrate 28000.
ERROR: from element /GstPipeline:pipeline0/GstCapsFilter:capsfilter0: Filter caps do not completely specify the output format
Additional debug info:
gstcapsfilter.c(392): gst_capsfilter_prepare_buf (): /GstPipeline:pipeline0/GstCapsFilter:capsfilter0:
Output caps are unfixed: EMPTY
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...
#

If I specify filesink on /dev/dsp as output, all works (of course with different bitrate :) ).

# gst-launch-0.10 filesrc location=1.pcm ! audio/x-raw-int,width=16,depth=16,rate=22050,channels=1,endianness=1234,signed=true ! filesink location=/dev/dsp
Setting pipeline to PAUSED ...
Audio: Unhandled ioctl 0x00005401
Pipeline is PREROLLING ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
Got EOS from element "pipeline0".
Execution ended after 1125467000 ns.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...
#

Can anybody help me to resolve this issue?
Thanks!

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