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Sun Jun 6 23:52:00 PDT 2010

When I load the codec as an Audio Codec the call to AudioCodecInitialize appears to work but if I then get the IsInitialized property that says it is not initialized - so looks like that is my problem, and ties up with the crash in vorbis_synthesis_start(). Looks like vorbis_synthesis_init() has not been called, perhaps.

There's sample code out there that suggests people have got this working, so is it just that I'm missing a call to initialize it somewhere?

I can post code and crash dumps, but I suspect my problem is more basic than that.

Meanwhile I'm going to build the XiphQT plugin with trace and see what I can find out that way.

Versions are Mac OS 10.6.6, XiphQT 0.1.9

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<html><head></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I'm =
trying to get Mac OS X Core Audio working with the XiphQT plugin, to =
decode and playback an Ogg/Vorbis stream.<div><br></div><div>=46rom what =
I've read it looks like the XiphQT plugin, although originally QT, also =
works with core audio as a codec/converter. I've tried setting it up as =
an Audio Codec (FindNextComponent, OpenAComponent, AudioCodecInitialize) =
and as a Audio Converter (AudioConverterNew). In both cases the codec =
loads fine (so probably is OK to use as a codec/converter) but as soon =
as I try to start using it I get a crash in =
vorbis_synthesis_start().</div><div><br></div><div>When I load the codec =
as an Audio Codec the call to&nbsp;AudioCodecInitialize appears to work =
but if I then get the IsInitialized property that says it is not =
initialized - so looks like that is my problem, and ties up with the =
crash in&nbsp;vorbis_synthesis_start(). Looks like =
vorbis_synthesis_init() has not been called, =
perhaps.</div><div>&nbsp;</div><div>There's sample code out there that =
suggests people have got this working, so is it just that I'm missing a =
call to initialize it somewhere?</div><div><br></div><div>I can post =
code and crash dumps, but I suspect my problem is more basic than =
that.</div><div><br></div><div>Meanwhile I'm going to build the XiphQT =
plugin with trace and see what I can find out that =
way.</div><div><br></div><div>Versions are Mac OS 10.6.6, XiphQT =
0.1.9</div><div><br></div><div><span class=3D"Apple-style-span" =
style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: =
Calibri; font-size: medium; font-style: normal; font-variant: normal; =
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-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: =
0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0px; "><div><span =
class=3D"Apple-style-span" style=3D"font-family: Helvetica; =
"><div><div><div><font class=3D"Apple-style-span" color=3D"#548DD4" =
face=3D"Calibri, sans-serif" size=3D"3"><span class=3D"Apple-style-span" =
style=3D"font-size: 11px; =
"><i><br></i></span></font></div></div></div></span></div></span><br =
class=3D"Apple-interchange-newline">
</div>
<br></body></html>=

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