android gstreamer debug information can not work

J2GG

我刚刚将prajnashi的gstreamer移植到froyo上，但是audioflingersink和surfaceflingersink都无法正常跑起来

老是输出如下打印：
Setting pipeline to PAUSED .
Pipeline is PREROLLING ...
ERROR: from element /GstPipeline:pipeline0/
GstAudioFlingerSink:audioflingersink0: Could not get/set settings from/
on resource.
Additional debug info:
external/gst-plugins-android/sink/audioflingersink/
gstaudioflingersink.cbinder: release proc 7966, transaction 30848, not
freed
(442): gst_audioflinger_sink_prepare (): /GstPipeline:pipeline0/
GstAudioFlingerSink:audioflingersink0:
Failed to create AudioFlinger for format 3
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
FREEING pipeline ...

请高手指教指教，谢谢