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<br><font size=2 face="sans-serif">Hello all,</font>
<br><font size=2 face="sans-serif"> I
am playing around, trying to get an OggVorbis encoder implementation working
on the Symbian OS. </font>
<br><font size=2 face="sans-serif">Unfortunately I am getting a crash -
here is the stack</font>
<br>
<br><font size=2 face="sans-serif">vorbis_analysis_blockout</font>
<br><font size=2 face="sans-serif">_ve_envelope_search</font>
<br><font size=2 face="sans-serif">_ve_amp</font>
<br><font size=2 face="sans-serif">mdct_forward</font>
<br><font size=2 face="sans-serif">free</font>
<br><font size=2 face="sans-serif">User::Free(void *)</font>
<br><font size=2 face="sans-serif">RHeap::Free(void *)</font>
<br><font size=2 face="sans-serif">RHeap::GetAddress(const void *)const
</font>
<br><font size=2 face="sans-serif">RHeap::CheckCell(const RHeap::SCell
*)const </font>
<br><font size=2 face="sans-serif">Panic(TCdtPanic)</font>
<br><font size=2 face="sans-serif">User::Panic(const TDesC16 &, int)</font>
<br>
<br><font size=2 face="sans-serif">In the case here the free call is doing
something very bad </font>
<br><font size=2 face="sans-serif">(like for example freeing some memory
already freed). Hence the crash.</font>
<br><font size=2 face="sans-serif">Perhaps my entire vorbis configuration
is broken before </font>
<br><font size=2 face="sans-serif">the vorbis_analysis_blockout call -
this would explain the crash</font>
<br><font size=2 face="sans-serif">Here is some logging of the vorbis APIs
that are being called before the crash happens:-</font>
<br>
<br><font size=2 face="sans-serif"> 88.675
Called vorbis_analysis_buffer with int vals
= 1024</font>
<br><font size=2 face="sans-serif"> 88.675
Called vorbis_analysis_wrote with vals = 1024</font>
<br><font size=2 face="sans-serif"> 88.675
about to call vorbis_analysis_blockout (returned
0)</font>
<br><font size=2 face="sans-serif"> 88.700
Called vorbis_analysis_buffer with int vals
= 1024</font>
<br><font size=2 face="sans-serif"> 88.700
Called vorbis_analysis_wrote with vals = 1024</font>
<br><font size=2 face="sans-serif"> 88.700
about to call vorbis_analysis_blockout (returned
0)</font>
<br><font size=2 face="sans-serif"> 88.725
Called vorbis_analysis_buffer with int vals
= 1024</font>
<br><font size=2 face="sans-serif"> 88.725
Called vorbis_analysis_wrote with vals = 1024</font>
<br><font size=2 face="sans-serif"> 88.725
about to call vorbis_analysis_blockout</font>
<br><font size=2 face="sans-serif"> 88.730
Thread MMFAudioServer.exe::Local-0134f468 Panic
USER 42</font>
<br>
<br><font size=2 face="sans-serif">A quick search of Google shows that
my particular callstack has occured before - in 2002.</font>
<br><font size=2 face="sans-serif"> At that time it was fixed by </font>
<table width=100%>
<tr>
<td width=100%><font size=3>monty@xiph.org. That may or may not have been
a related problem.</font>
<br><font size=3>(http://trac.xiph.org/cgi-bin/trac.cgi/ticket/216)</font>
<br>
<br><font size=3>Does anyone have any ideas on how to fix this?</font></table>
<br>
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