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VST3 Wrapper: Avoid calling processBlock when there is no audio input/output

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reuk 2022-01-12 19:58:31 +00:00
parent df206371ff
commit bd52350c00
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GPG key ID: 9ADCD339CFC98A11
1 changed files with 21 additions and 17 deletions
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38
modules/juce_audio_plugin_client/VST3/juce_VST3_Wrapper.cpp
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@ -3155,9 +3155,27 @@ public:
return kResultFalse;
}
if (processSetup.symbolicSampleSize == Vst::kSample32) processAudio<float> (data, channelListFloat);
else if (processSetup.symbolicSampleSize == Vst::kSample64) processAudio<double> (data, channelListDouble);
else jassertfalse;
// If all of these are zero, the host is attempting to flush parameters without processing audio.
if (data.numSamples != 0 || data.numInputs != 0 || data.numOutputs != 0)
{
if (processSetup.symbolicSampleSize == Vst::kSample32) processAudio<float> (data, channelListFloat);
else if (processSetup.symbolicSampleSize == Vst::kSample64) processAudio<double> (data, channelListDouble);
else jassertfalse;
}
if (auto* changes = data.outputParameterChanges)
{
comPluginInstance->forAllChangedParameters ([&] (Vst::ParamID paramID, float value)
{
Steinberg::int32 queueIndex = 0;
if (auto* queue = changes->addParameterData (paramID, queueIndex))
{
Steinberg::int32 pointIndex = 0;
queue->addPoint (0, value, pointIndex);
}
});
}
#if JucePlugin_ProducesMidiOutput
if (isMidiOutputBusEnabled && data.outputEvents != nullptr)
@ -3381,20 +3399,6 @@ private:
jassert (midiBuffer.getNumEvents() <= numMidiEventsComingIn);
#endif
}
if (auto* changes = data.outputParameterChanges)
{
comPluginInstance->forAllChangedParameters ([&] (Vst::ParamID paramID, float value)
{
Steinberg::int32 queueIndex = 0;
if (auto* queue = changes->addParameterData (paramID, queueIndex))
{
Steinberg::int32 pointIndex = 0;
queue->addPoint (0, value, pointIndex);
}
});
}
}
//==============================================================================