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Bug 2036 - Mac: Some AU plug-in effects can be enabled but fail to register

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None of the effects listed in the bug expose any parameters.
This commit is contained in:
Leland Lucius 2020-03-07 01:39:11 -06:00
parent d15308b7e7
commit 35fa6cf399
1 changed files with 21 additions and 18 deletions
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39
src/effects/audiounits/AudioUnitEffect.cpp
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@ -1092,30 +1092,33 @@ bool AudioUnitEffect::SetHost(EffectHostInterface *host)
// And get them
UInt32 cnt = dataSize / sizeof(AudioUnitParameterID);
ArrayOf<AudioUnitParameterID> array {cnt};
result = AudioUnitGetProperty(mUnit,
kAudioUnitProperty_ParameterList,
kAudioUnitScope_Global,
0,
array.get(),
&dataSize);
if (result != noErr)
if (cnt != 0)
{
return false;
}
ArrayOf<AudioUnitParameterID> array {cnt};
// Register them as something we're interested in
for (int i = 0; i < cnt; i++)
{
event.mArgument.mParameter.mParameterID = array[i];
result = AUEventListenerAddEventType(mEventListenerRef,
this,
&event);
result = AudioUnitGetProperty(mUnit,
kAudioUnitProperty_ParameterList,
kAudioUnitScope_Global,
0,
array.get(),
&dataSize);
if (result != noErr)
{
return false;
}
// Register them as something we're interested in
for (int i = 0; i < cnt; i++)
{
event.mArgument.mParameter.mParameterID = array[i];
result = AUEventListenerAddEventType(mEventListenerRef,
this,
&event);
if (result != noErr)
{
return false;
}
}
}
event.mEventType = kAudioUnitEvent_PropertyChange;