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AUv2: Added support for AUv2 Midi Effect plug-in hosting

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This commit is contained in:
hogliux 2017-10-12 18:39:12 +01:00
parent a1a1297f7d
commit 6e89e61b89
1 changed files with 84 additions and 40 deletions
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124
modules/juce_audio_processors/format_types/juce_AudioUnitPluginFormat.mm
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@ -115,6 +115,8 @@ namespace AudioUnitFormatHelpers
s << "Panners/";
else if (desc.componentType == kAudioUnitType_Mixer)
s << "Mixers/";
else if (desc.componentType == kAudioUnitType_MIDIProcessor)
s << "MidiEffects/";
s << osTypeToString (desc.componentType) << ","
<< osTypeToString (desc.componentSubType) << ","
@ -247,7 +249,8 @@ namespace AudioUnitFormatHelpers
|| types[0] == kAudioUnitType_Effect
|| types[0] == kAudioUnitType_Generator
|| types[0] == kAudioUnitType_Panner
|| types[0] == kAudioUnitType_Mixer)
|| types[0] == kAudioUnitType_Mixer
|| types[0] == kAudioUnitType_MIDIProcessor)
{
desc.componentType = types[0];
desc.componentSubType = types[1];
@ -283,6 +286,7 @@ namespace AudioUnitFormatHelpers
case kAudioUnitType_Generator: return "Generator";
case kAudioUnitType_Panner: return "Panner";
case kAudioUnitType_Mixer: return "Mixer";
case kAudioUnitType_MIDIProcessor: return "MidiEffects";
default: break;
}
@ -322,7 +326,10 @@ public:
#endif
wantsMidiMessages = componentDesc.componentType == kAudioUnitType_MusicDevice
|| componentDesc.componentType == kAudioUnitType_MusicEffect;
|| componentDesc.componentType == kAudioUnitType_MusicEffect
|| componentDesc.componentType == kAudioUnitType_MIDIProcessor;
isMidiEffectPlugin = (componentDesc.componentType == kAudioUnitType_MIDIProcessor);
AudioComponentDescription ignore;
getComponentDescFromIdentifier (createPluginIdentifier (componentDesc), ignore, pluginName, version, manufacturer);
@ -680,37 +687,44 @@ public:
{
releaseResources();
for (int dir = 0; dir < 2; ++dir)
if (isMidiEffectPlugin)
{
const bool isInput = (dir == 0);
const AudioUnitScope scope = isInput ? kAudioUnitScope_Input : kAudioUnitScope_Output;
const int n = getBusCount (isInput);
for (int i = 0; i < n; ++i)
outputBufferList.add (new AUBuffer (1));
}
else
{
for (int dir = 0; dir < 2; ++dir)
{
Float64 sampleRate;
UInt32 sampleRateSize = sizeof (sampleRate);
const Float64 sr = newSampleRate;
const bool isInput = (dir == 0);
const AudioUnitScope scope = isInput ? kAudioUnitScope_Input : kAudioUnitScope_Output;
const int n = getBusCount (isInput);
AudioUnitGetProperty (audioUnit, kAudioUnitProperty_SampleRate, scope, static_cast<UInt32> (i), &sampleRate, &sampleRateSize);
if (sampleRate != sr)
AudioUnitSetProperty (audioUnit, kAudioUnitProperty_SampleRate, scope, static_cast<UInt32> (i), &sr, sizeof (sr));
if (isInput)
for (int i = 0; i < n; ++i)
{
AURenderCallbackStruct info;
zerostruct (info); // (can't use "= { 0 }" on this object because it's typedef'ed as a C struct)
Float64 sampleRate;
UInt32 sampleRateSize = sizeof (sampleRate);
const Float64 sr = newSampleRate;
info.inputProcRefCon = this;
info.inputProc = renderGetInputCallback;
AudioUnitGetProperty (audioUnit, kAudioUnitProperty_SampleRate, scope, static_cast<UInt32> (i), &sampleRate, &sampleRateSize);
AudioUnitSetProperty (audioUnit, kAudioUnitProperty_SetRenderCallback, kAudioUnitScope_Input,
static_cast<UInt32> (i), &info, sizeof (info));
}
else
{
outputBufferList.add (new AUBuffer (static_cast<size_t> (getChannelCountOfBus (false, i))));
if (sampleRate != sr)
AudioUnitSetProperty (audioUnit, kAudioUnitProperty_SampleRate, scope, static_cast<UInt32> (i), &sr, sizeof (sr));
if (isInput)
{
AURenderCallbackStruct info;
zerostruct (info); // (can't use "= { 0 }" on this object because it's typedef'ed as a C struct)
info.inputProcRefCon = this;
info.inputProc = renderGetInputCallback;
AudioUnitSetProperty (audioUnit, kAudioUnitProperty_SetRenderCallback, kAudioUnitScope_Input,
static_cast<UInt32> (i), &info, sizeof (info));
}
else
{
outputBufferList.add (new AUBuffer (static_cast<size_t> (getChannelCountOfBus (false, i))));
}
}
}
}
@ -780,20 +794,40 @@ public:
if (prepared)
{
timeStamp.mHostTime = GetCurrentHostTime (numSamples, getSampleRate(), isAUv3);
int numOutputBuses;
int chIdx = 0;
const int numOutputBuses = getBusCount (false);
for (int i = 0; i < numOutputBuses; ++i)
if (isMidiEffectPlugin)
{
if (AUBuffer* buf = outputBufferList[i])
numOutputBuses = 1;
if (AUBuffer* buf = outputBufferList[0])
{
AudioBufferList& abl = *buf;
for (AudioUnitElement j = 0; j < abl.mNumberBuffers; ++j)
{
abl.mBuffers[j].mNumberChannels = 1;
abl.mBuffers[j].mDataByteSize = (UInt32) (sizeof (float) * (size_t) numSamples);
abl.mBuffers[j].mData = buffer.getWritePointer (chIdx++);
abl.mBuffers[j].mNumberChannels = 0;
abl.mBuffers[j].mDataByteSize = 0;
abl.mBuffers[j].mData = nullptr;
}
}
}
else
{
int chIdx = 0;
numOutputBuses = getBusCount (false);
for (int i = 0; i < numOutputBuses; ++i)
{
if (AUBuffer* buf = outputBufferList[i])
{
AudioBufferList& abl = *buf;
for (AudioUnitElement j = 0; j < abl.mNumberBuffers; ++j)
{
abl.mBuffers[j].mNumberChannels = 1;
abl.mBuffers[j].mDataByteSize = (UInt32) (sizeof (float) * (size_t) numSamples);
abl.mBuffers[j].mData = buffer.getWritePointer (chIdx++);
}
}
}
}
@ -818,13 +852,22 @@ public:
midiMessages.clear();
}
for (int i = 0; i < numOutputBuses; ++i)
if (isMidiEffectPlugin)
{
AudioUnitRenderActionFlags flags = 0;
if (AUBuffer* buf = outputBufferList[i])
AudioUnitRender (audioUnit, &flags, &timeStamp, static_cast<UInt32> (i), (UInt32) numSamples, buf->bufferList.get());
if (AUBuffer* buf = outputBufferList[0])
AudioUnitRender (audioUnit, &flags, &timeStamp, 0, (UInt32) numSamples, buf->bufferList.get());
}
else
{
for (int i = 0; i < numOutputBuses; ++i)
{
AudioUnitRenderActionFlags flags = 0;
if (AUBuffer* buf = outputBufferList[i])
AudioUnitRender (audioUnit, &flags, &timeStamp, static_cast<UInt32> (i), (UInt32) numSamples, buf->bufferList.get());
}
}
timeStamp.mSampleTime += numSamples;
@ -1233,7 +1276,7 @@ private:
String pluginName, manufacturer, version;
String fileOrIdentifier;
CriticalSection lock;
bool wantsMidiMessages, producesMidiMessages, wasPlaying, prepared, isAUv3;
bool wantsMidiMessages, producesMidiMessages, wasPlaying, prepared, isAUv3, isMidiEffectPlugin;
struct AUBuffer
{
@ -2393,7 +2436,8 @@ StringArray AudioUnitPluginFormat::searchPathsForPlugins (const FileSearchPath&,
|| desc.componentType == kAudioUnitType_Effect
|| desc.componentType == kAudioUnitType_Generator
|| desc.componentType == kAudioUnitType_Panner
|| desc.componentType == kAudioUnitType_Mixer)
|| desc.componentType == kAudioUnitType_Mixer
|| desc.componentType == kAudioUnitType_MIDIProcessor)
{
ignoreUnused (allowPluginsWhichRequireAsynchronousInstantiation);