[gst-devel] why playbin can not recognized my aac decoder

[gtxia]

Jan

Thanks for your help. But I register my aac decoder with 
GST_RANK_PRIMARY. Some other problems can cause that?  The key problem
is that my aac decoder can be recognized by playbin when I play aac
audio file(such as XXX.aac), and I can connect it src pad with avidemux
sink pad if the avi has aac audio manually. But playbin can not do that.
What is the main problem? gstreamer's framework bug?

Regards

XiaGuangTai


On Fri, 2007-05-18 at 13:54 +0200, Jan Schmidt wrote:
> gtxia wrote:
> > hello all.
> > 
> > I developed a aac decoder and it can deal with thus sink caps
> > 
> > GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
> >     GST_PAD_SINK,
> >     GST_PAD_ALWAYS,
> >     GST_STATIC_CAPS (
> > 		"audio/mpeg, "
> > 		"mpegversion = (int) {2, 4}, "
> > 		"rate = (int) [8000, 96000], "
> > 		"channels = (int) [1, 6]")
> > 
> > When I use playbin to play aac audio file. It's OK. But I want to use it
> > to decoder aac framed audio in A/V file such as avi with its audio
> > format is aac. My acc decoder can not be recognized by playbin. If I
> > linked the caps manually. It's ok. I used --gst-debug=*5 to dump all
> > inforamtions into a file. I can not find any useful informations. 
> > 
> > The playbin always complains with 
> > 
> > ** Message: don't know how to handle audio/mpeg, mpegversion=(int)4,
> > framed=(boolean)true, codec_data=(buffer)1290, rate=(int)32000,
> > channels=(int)2
> > 
> 
> You're probably registering your element with GST_RANK_NONE, preventing
> it from participating in the autoplugging.
> 
> Regards,
> Jan.