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<div class=Section1>
<p class=MsoNormal><span lang=EN-US style='color:navy'>Hi,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:navy'>I’m new to
GStreamer and try to write a encoder and a decoder for a compressed audio
format. But I have problems to get the Caps-negotiation to work.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:navy'>I base the code on the gst-template
and have basically been looking at the alawenc/alawdec as my example. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:navy'>Everything works fine if
I use “ANY” or “audio/x-raw-int” in the source of the
encoder and sink of the decoder:<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:10.0pt;font-family:"Courier New";color:blue'>static</span><span
lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>
GstStaticPadTemplate gtest_enc_src_factory = GST_STATIC_PAD_TEMPLATE (<span
style='color:#A31515'>"src"</span>,<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:10.0pt;font-family:"Courier New"'>
GST_PAD_SRC,<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:10.0pt;font-family:"Courier New"'>
GST_PAD_ALWAYS,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>
GST_STATIC_CAPS (<span style='color:#A31515'>"ANY"</span>)<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:10.0pt;font-family:"Courier New";color:blue'>static</span><span
lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>
GstStaticPadTemplate gtest_dec_sink_factory = GST_STATIC_PAD_TEMPLATE (<span
style='color:#A31515'>"sink"</span>,<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:10.0pt;font-family:"Courier New"'>
GST_PAD_SINK,<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:10.0pt;font-family:"Courier New"'>
GST_PAD_ALWAYS,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>
GST_STATIC_CAPS (<span style='color:#A31515'>"ANY"</span>)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:navy'>But when I change the
MIME-type to something else, like for example “audio/mytesttype”, I
get the error “WARNING: erroneous pipeline: could not link gtestenc0 to
gtestdec0”. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:navy'>I’m using the pipeline:
<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:navy'>gst-launch-0.10.exe audiotestsrc
! gtestenc ! gtestdec ! audioresample ! autoaudiosink<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:navy'>I get the same error if
I only change one of the two caps:es and keep the other one as ANY.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:navy'>What have I missed? Do I
need to register my new type in some way, or what could be the problem?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='color:navy'>Markus<o:p></o:p></span></p>
</div>
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