Re: AU diagnostics?
Re: AU diagnostics?
- Subject: Re: AU diagnostics?
- From: "Angus F. Hewlett" <email@hidden>
- Date: Sun, 23 Feb 2003 18:48:09 +0000
Anyone..? I've tried adjusting things here but made no headway :( - seems
the AUGraph's initialization sequence dies immediately after calling
GetStreamFormat() on my AU.
At 02:41 PM 2/21/2003 +0000, you wrote:
>
OK, I've tracked it down somewhat... the reason render() never gets called
>
is that AUGraphInitialize is failing with error code
>
-10868(kAudioUnitErr_FormatNotSupported). The AUGraph reports this error
>
after calling GetStreamFormat via the dispatcher.
>
>
My GetStreamFormat code (courtesy of Emagic) looks like this:-
>
>
>
//
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-----------------------------------------------------------------------------
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const CAStreamBasicDescription&
>
CVST2AUPlugin::GetStreamFormat(AudioUnitScope iScope, AudioUnitElement)
>
{
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static CAStreamBasicDescription sDesc;
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sDesc.mSampleRate = m_r64Samplerate;
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sDesc.mFormatID = kAudioFormatLinearPCM;
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sDesc.mFormatFlags = (kAudioFormatFlagsNativeFloatPacked |
>
kAudioFormatFlagIsNonInterleaved);
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sDesc.mBytesPerPacket = m_lFramesPerSlice*4;
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sDesc.mFramesPerPacket = m_lFramesPerSlice;
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sDesc.mBytesPerFrame = 4;
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sDesc.mChannelsPerFrame =
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(iScope==kAudioUnitScope_Input?s_pcInfo.NumInputs():s_pcInfo.NumOutputs());
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sDesc.mBitsPerChannel = 32;
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return sDesc;
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}
>
>
m_r64Samplerate is initialized to 44100, and m_lFramesPerSlice to 1024.
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NumOutputs is 2, NumInputs most likely 0 (is that a problem? Should even a
>
synth AU declare 2 inputs?)
>
>
Regards,
>
Angus.
>
>
>
>
>
At 04:27 PM 2/20/2003 -0800, Bill Stewart wrote:
>
>You can run AudioUnitHosting (in the CoreAudio SDK) in a mode where
>
>synths will be loaded and MIDI input is received from the first MIDI
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>Endpoint in the system - its a bit "grungy" (technical term) - but it
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>does work and is a good way to validate synths
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>
>
>Bill
>
>
>
>On Wednesday, February 19, 2003, at 06:04 AM, Angus F. Hewlett wrote:
>
>
>
>> At 02:56 PM 2/19/2003 +0100, you wrote:
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>>> Hmm,
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>>>
>
>>> my problems have been somewhat similar when I started...
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>>>
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>>> I can't recall the solution, but do you return true on
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>>> yoursynth::StreamFormatWritable(...) ?
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>>
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>> Yes.
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>>
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>>> Does Render() not even get called once?
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>>
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>> Not even once in Rax or Synthtest... but works fine in LAP6 prerelease.
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>>
>
>>
>
>> =======================================================
>
>> Angus F. Hewlett, Technical Director
>
>> FXpansion Audio UK Ltd - http://www.fxpansion.com
>
>> =======================================================
>
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>>
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>--
>
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>
>tel: +1 408 974 4056
>
>
>
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=======================================================
>
Angus F. Hewlett, Technical Director
>
FXpansion Audio UK Ltd - http://www.fxpansion.com
>
=======================================================
>
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=======================================================
Angus F. Hewlett, Technical Director
FXpansion Audio UK Ltd -
http://www.fxpansion.com
=======================================================
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