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Updated the JUCE demo plugin to support standalone targets on all platforms

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This commit is contained in:
hogliux 2017-02-01 15:54:49 +00:00
parent 9f3fb1c0a6
commit dda135a9eb
4 changed files with 87 additions and 17 deletions
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46
examples/audio plugin demo/Source/PluginProcessor.cpp
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@ -147,8 +147,7 @@ private:
//==============================================================================
JuceDemoPluginAudioProcessor::JuceDemoPluginAudioProcessor()
: AudioProcessor (BusesProperties().withInput ("Input", AudioChannelSet::stereo(), true)
.withOutput ("Output", AudioChannelSet::stereo(), true)),
: AudioProcessor (getBusesProperties()),
lastUIWidth (400),
lastUIHeight (200),
gainParam (nullptr),
@ -186,21 +185,33 @@ void JuceDemoPluginAudioProcessor::initialiseSynth()
bool JuceDemoPluginAudioProcessor::isBusesLayoutSupported (const BusesLayout& layouts) const
{
// Only mono/stereo and input/output must have same layout
const AudioChannelSet& mainInput = layouts.getMainInputChannelSet();
const AudioChannelSet& mainOutput = layouts.getMainOutputChannelSet();
// input and output layout must be the same
if (mainInput != mainOutput) return false;
if (wrapperType != wrapperType_Standalone && layouts.getMainInputChannelSet() != mainOutput)
return false;
// do not allow disabling the main buses
if (mainInput.isDisabled()) return false;
if (mainOutput.isDisabled()) return false;
// only allow stereo and mono
if (mainInput.size() > 2) return false;
if (mainOutput.size() > 2) return false;
return true;
}
AudioProcessor::BusesProperties JuceDemoPluginAudioProcessor::getBusesProperties()
{
// This plug-in should not have any inputs when run as a standalone plug-in
if (PluginHostType::getPluginLoadedAs() == wrapperType_Standalone)
return BusesProperties().withOutput ("Output", AudioChannelSet::stereo(), true);
else
return BusesProperties().withInput ("Input", AudioChannelSet::stereo(), true)
.withOutput ("Output", AudioChannelSet::stereo(), true);
}
//==============================================================================
void JuceDemoPluginAudioProcessor::prepareToPlay (double newSampleRate, int /*samplesPerBlock*/)
{
// Use this method as the place to do any pre-playback
@ -244,8 +255,8 @@ void JuceDemoPluginAudioProcessor::process (AudioBuffer<FloatType>& buffer,
{
const int numSamples = buffer.getNumSamples();
// apply our gain-change to the incoming data..
applyGain (buffer, delayBuffer);
if (wrapperType == wrapperType_Standalone)
buffer.clear();
// Now pass any incoming midi messages to our keyboard state object, and let it
// add messages to the buffer if the user is clicking on the on-screen keys
@ -257,11 +268,16 @@ void JuceDemoPluginAudioProcessor::process (AudioBuffer<FloatType>& buffer,
// Apply our delay effect to the new output..
applyDelay (buffer, delayBuffer);
// In case we have more outputs than inputs, we'll clear any output
// channels that didn't contain input data, (because these aren't
// guaranteed to be empty - they may contain garbage).
for (int i = getTotalNumInputChannels(); i < getTotalNumOutputChannels(); ++i)
buffer.clear (i, 0, numSamples);
if (wrapperType != wrapperType_Standalone)
{
// In case we have more outputs than inputs, we'll clear any output
// channels that didn't contain input data, (because these aren't
// guaranteed to be empty - they may contain garbage).
for (int i = getTotalNumInputChannels(); i < getTotalNumOutputChannels(); ++i)
buffer.clear (i, 0, numSamples);
}
applyGain (buffer, delayBuffer); // apply our gain-change to the outgoing data..
// Now ask the host for the current time so we can store it to be displayed later...
updateCurrentTimeInfoFromHost();
@ -273,7 +289,7 @@ void JuceDemoPluginAudioProcessor::applyGain (AudioBuffer<FloatType>& buffer, Au
ignoreUnused (delayBuffer);
const float gainLevel = *gainParam;
for (int channel = 0; channel < getTotalNumInputChannels(); ++channel)
for (int channel = 0; channel < getTotalNumOutputChannels(); ++channel)
buffer.applyGain (channel, 0, buffer.getNumSamples(), gainLevel);
}
@ -285,7 +301,7 @@ void JuceDemoPluginAudioProcessor::applyDelay (AudioBuffer<FloatType>& buffer, A
int delayPos = 0;
for (int channel = 0; channel < getTotalNumInputChannels(); ++channel)
for (int channel = 0; channel < getTotalNumOutputChannels(); ++channel)
{
FloatType* const channelData = buffer.getWritePointer (channel);
FloatType* const delayData = delayBuffer.getWritePointer (jmin (channel, delayBuffer.getNumChannels() - 1));