forked from juce-framework/JUCE
/
juce_AUv3_Wrapper.mm
1826 lines (1450 loc) · 79.6 KB
/
juce_AUv3_Wrapper.mm
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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2017 - ROLI Ltd.
JUCE is an open source library subject to commercial or open-source
licensing.
By using JUCE, you agree to the terms of both the JUCE 5 End-User License
Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
27th April 2017).
End User License Agreement: www.juce.com/juce-5-licence
Privacy Policy: www.juce.com/juce-5-privacy-policy
Or: You may also use this code under the terms of the GPL v3 (see
www.gnu.org/licenses).
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
DISCLAIMED.
==============================================================================
*/
#include "../../juce_core/system/juce_TargetPlatform.h"
#include "../utility/juce_CheckSettingMacros.h"
#if JucePlugin_Build_AUv3
#import <CoreAudioKit/CoreAudioKit.h>
#import <AudioToolbox/AudioToolbox.h>
#import <AVFoundation/AVFoundation.h>
#if JUCE_MAC
#if (! defined MAC_OS_X_VERSION_MIN_REQUIRED) || (! defined MAC_OS_X_VERSION_10_11) || (MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_11)
#error AUv3 needs Deployment Target OS X 10.11 or higher to compile
#endif
#if (defined MAC_OS_X_VERSION_10_13) && (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_13)
#define JUCE_AUV3_MIDI_OUTPUT_SUPPORTED 1
#define JUCE_AUV3_VIEW_CONFIG_SUPPORTED 1
#endif
#endif
#if JUCE_IOS
#if (! defined __IPHONE_OS_VERSION_MIN_REQUIRED) || (! defined __IPHONE_9_0) || (__IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_9_0)
#error AUv3 needs Deployment Target iOS 9.0 or higher to compile
#endif
#if (defined __IPHONE_11_0) && (__IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_11_0)
#define JUCE_AUV3_MIDI_OUTPUT_SUPPORTED 1
#define JUCE_AUV3_VIEW_CONFIG_SUPPORTED 1
#endif
#endif
#ifndef __OBJC2__
#error AUv3 needs Objective-C 2 support (compile with 64-bit)
#endif
#define JUCE_CORE_INCLUDE_OBJC_HELPERS 1
#include "../utility/juce_IncludeSystemHeaders.h"
#include "../utility/juce_IncludeModuleHeaders.h"
#include "../../juce_graphics/native/juce_mac_CoreGraphicsHelpers.h"
#include "../../juce_audio_basics/native/juce_mac_CoreAudioLayouts.h"
#include "../../juce_audio_processors/format_types/juce_LegacyAudioParameter.cpp"
#include "../../juce_audio_processors/format_types/juce_AU_Shared.h"
#define JUCE_VIEWCONTROLLER_OBJC_NAME(x) JUCE_JOIN_MACRO (x, FactoryAUv3)
#if JUCE_IOS
#define JUCE_IOS_MAC_VIEW UIView
#else
#define JUCE_IOS_MAC_VIEW NSView
#endif
#define JUCE_AUDIOUNIT_OBJC_NAME(x) JUCE_JOIN_MACRO (x, AUv3)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wnullability-completeness"
using namespace juce;
// TODO: use SFINAE to automatically generate this for all NSObjects
template <> struct ContainerDeletePolicy<AUAudioUnitBusArray> { static void destroy (NSObject* o) { [o release]; } };
template <> struct ContainerDeletePolicy<AUParameterTree> { static void destroy (NSObject* o) { [o release]; } };
template <> struct ContainerDeletePolicy<NSMutableArray<AUParameterNode*>> { static void destroy (NSObject* o) { [o release]; } };
template <> struct ContainerDeletePolicy<AUParameter> { static void destroy (NSObject* o) { [o release]; } };
template <> struct ContainerDeletePolicy<NSMutableArray<AUAudioUnitBus*>> { static void destroy (NSObject* o) { [o release]; } };
template <> struct ContainerDeletePolicy<AUAudioUnitBus> { static void destroy (NSObject* o) { [o release]; } };
template <> struct ContainerDeletePolicy<AVAudioFormat> { static void destroy (NSObject* o) { [o release]; } };
template <> struct ContainerDeletePolicy<AVAudioPCMBuffer> { static void destroy (NSObject* o) { [o release]; } };
template <> struct ContainerDeletePolicy<NSMutableArray<NSNumber*>> { static void destroy (NSObject* o) { [o release]; } };
template <> struct ContainerDeletePolicy<NSNumber> { static void destroy (NSObject* o) { [o release]; } };
template <> struct ContainerDeletePolicy<NSMutableArray<AUAudioUnitPreset*>> { static void destroy (NSObject* o) { [o release]; } };
template <> struct ContainerDeletePolicy<AUAudioUnitPreset> { static void destroy (NSObject* o) { [o release]; } };
//==============================================================================
struct AudioProcessorHolder : public ReferenceCountedObject
{
AudioProcessorHolder() {}
AudioProcessorHolder (AudioProcessor* p) : processor (p) {}
AudioProcessor& operator*() noexcept { return *processor; }
AudioProcessor* operator->() noexcept { return processor; }
AudioProcessor* get() noexcept { return processor; }
struct ViewConfig
{
double width;
double height;
bool hostHasMIDIController;
};
ScopedPointer<ViewConfig> viewConfiguration;
typedef ReferenceCountedObjectPtr<AudioProcessorHolder> Ptr;
private:
ScopedPointer<AudioProcessor> processor;
AudioProcessorHolder& operator= (AudioProcessor*) = delete;
AudioProcessorHolder (AudioProcessorHolder&) = delete;
AudioProcessorHolder& operator= (AudioProcessorHolder&) = delete;
};
//==============================================================================
class JuceAudioUnitv3Base
{
public:
JuceAudioUnitv3Base (const AudioComponentDescription& descr,
AudioComponentInstantiationOptions options,
NSError** error)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wobjc-method-access"
: au ([audioUnitObjCClass.createInstance() initWithComponentDescription: descr
options: options
error: error
juceClass: this])
#pragma clang diagnostic pop
{}
JuceAudioUnitv3Base (AUAudioUnit* audioUnit) : au (audioUnit)
{
jassert (MessageManager::getInstance()->isThisTheMessageThread());
initialiseJuce_GUI();
}
virtual ~JuceAudioUnitv3Base() {}
//==============================================================================
AUAudioUnit* getAudioUnit() noexcept { return au; }
//==============================================================================
virtual void reset() = 0;
//==============================================================================
virtual AUAudioUnitPreset* getCurrentPreset() = 0;
virtual void setCurrentPreset(AUAudioUnitPreset*) = 0;
virtual NSArray<AUAudioUnitPreset*>* getFactoryPresets() = 0;
virtual NSDictionary<NSString*, id>* getFullState()
{
objc_super s = { getAudioUnit(), [AUAudioUnit class] };
return ObjCMsgSendSuper<NSDictionary<NSString*, id>*> (&s, @selector (fullState));
}
virtual void setFullState (NSDictionary<NSString*, id>* state)
{
objc_super s = { getAudioUnit(), [AUAudioUnit class] };
ObjCMsgSendSuper<void, NSDictionary<NSString*, id>*> (&s, @selector (setFullState:), state);
}
virtual AUParameterTree* getParameterTree() = 0;
virtual NSArray<NSNumber*>* parametersForOverviewWithCount (int) = 0;
//==============================================================================
virtual NSTimeInterval getLatency() = 0;
virtual NSTimeInterval getTailTime() = 0;
//==============================================================================
virtual AUAudioUnitBusArray* getInputBusses() = 0;
virtual AUAudioUnitBusArray* getOutputBusses() = 0;
virtual NSArray<NSNumber*>* getChannelCapabilities() = 0;
virtual bool shouldChangeToFormat (AVAudioFormat*, AUAudioUnitBus*) = 0;
//==============================================================================
virtual int getVirtualMIDICableCount() = 0;
virtual bool getSupportsMPE() = 0;
virtual NSArray<NSString*>* getMIDIOutputNames() = 0;
//==============================================================================
virtual AUInternalRenderBlock getInternalRenderBlock() = 0;
virtual bool getCanProcessInPlace() { return false; }
virtual bool getRenderingOffline() = 0;
virtual void setRenderingOffline (bool offline) = 0;
//==============================================================================
virtual NSString* getContextName() const = 0;
virtual void setContextName (NSString*) = 0;
virtual bool allocateRenderResourcesAndReturnError (NSError **outError)
{
objc_super s = { getAudioUnit(), [AUAudioUnit class] };
return (ObjCMsgSendSuper<BOOL, NSError**> (&s, @selector (allocateRenderResourcesAndReturnError:), outError) == YES);
}
virtual void deallocateRenderResources()
{
objc_super s = { getAudioUnit(), [AUAudioUnit class] };
ObjCMsgSendSuper<void> (&s, @selector (deallocateRenderResources));
}
//==============================================================================
#if JUCE_AUV3_VIEW_CONFIG_SUPPORTED
virtual NSIndexSet* getSupportedViewConfigurations (NSArray<AUAudioUnitViewConfiguration*>*) = 0;
virtual void selectViewConfiguration (AUAudioUnitViewConfiguration*) = 0;
#endif
private:
struct Class : public ObjCClass<AUAudioUnit>
{
Class() : ObjCClass<AUAudioUnit> ("AUAudioUnit_")
{
addIvar<JuceAudioUnitv3Base*> ("cppObject");
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wundeclared-selector"
addMethod (@selector (initWithComponentDescription:options:error:juceClass:),
initWithComponentDescriptionAndJuceClass, "@@:",
@encode (AudioComponentDescription),
@encode (AudioComponentInstantiationOptions), "^@@");
#pragma clang diagnostic pop
addMethod (@selector (initWithComponentDescription:options:error:),
initWithComponentDescription, "@@:",
@encode (AudioComponentDescription),
@encode (AudioComponentInstantiationOptions), "^@");
addMethod (@selector (dealloc), dealloc, "v@:");
//==============================================================================
addMethod (@selector (reset), reset, "v@:");
//==============================================================================
addMethod (@selector (currentPreset), getCurrentPreset, "@@:");
addMethod (@selector (setCurrentPreset:), setCurrentPreset, "v@:@");
addMethod (@selector (factoryPresets), getFactoryPresets, "@@:");
addMethod (@selector (fullState), getFullState, "@@:");
addMethod (@selector (setFullState:), setFullState, "v@:@");
addMethod (@selector (parameterTree), getParameterTree, "@@:");
addMethod (@selector (parametersForOverviewWithCount:), parametersForOverviewWithCount, "@@:", @encode (NSInteger));
//==============================================================================
addMethod (@selector (latency), getLatency, @encode (NSTimeInterval), "@:");
addMethod (@selector (tailTime), getTailTime, @encode (NSTimeInterval), "@:");
//==============================================================================
addMethod (@selector (inputBusses), getInputBusses, "@@:");
addMethod (@selector (outputBusses), getOutputBusses, "@@:");
addMethod (@selector (channelCapabilities), getChannelCapabilities, "@@:");
addMethod (@selector (shouldChangeToFormat:forBus:), shouldChangeToFormat, "B@:@@");
//==============================================================================
addMethod (@selector (virtualMIDICableCount), getVirtualMIDICableCount, @encode (NSInteger), "@:");
addMethod (@selector (supportsMPE), getSupportsMPE, @encode (BOOL), "@:");
#if JUCE_AUV3_MIDI_OUTPUT_SUPPORTED
addMethod (@selector (MIDIOutputNames), getMIDIOutputNames, "@@:");
#endif
//==============================================================================
addMethod (@selector (internalRenderBlock), getInternalRenderBlock, @encode (AUInternalRenderBlock), "@:");
addMethod (@selector (canProcessInPlace), getCanProcessInPlace, @encode (BOOL), "@:");
addMethod (@selector (isRenderingOffline), getRenderingOffline, @encode (BOOL), "@:");
addMethod (@selector (setRenderingOffline:), setRenderingOffline, "v@:", @encode (BOOL));
addMethod (@selector (allocateRenderResourcesAndReturnError:), allocateRenderResourcesAndReturnError, "B@:^@");
addMethod (@selector (deallocateRenderResources), deallocateRenderResources, "v@:");
//==============================================================================
addMethod (@selector (contextName), getContextName, "@@:");
addMethod (@selector (setContextName:), setContextName, "v@:@");
//==============================================================================
#if JUCE_AUV3_VIEW_CONFIG_SUPPORTED
addMethod (@selector (supportedViewConfigurations:), getSupportedViewConfigurations, "@@:@");
addMethod (@selector (selectViewConfiguration:), selectViewConfiguration, "v@:@");
#endif
registerClass();
}
//==============================================================================
static JuceAudioUnitv3Base* _this (id self) { return getIvar<JuceAudioUnitv3Base*> (self, "cppObject"); }
static void setThis (id self, JuceAudioUnitv3Base* cpp) { object_setInstanceVariable (self, "cppObject", cpp); }
//==============================================================================
static id initWithComponentDescription (id _self, SEL, AudioComponentDescription descr, AudioComponentInstantiationOptions options, NSError** error)
{
AUAudioUnit* self = _self;
objc_super s = { self, [AUAudioUnit class] };
self = ObjCMsgSendSuper<AUAudioUnit*, AudioComponentDescription,
AudioComponentInstantiationOptions, NSError**> (&s, @selector(initWithComponentDescription:options:error:), descr, options, error);
JuceAudioUnitv3Base* juceAU = JuceAudioUnitv3Base::create (self, descr, options, error);
setThis (self, juceAU);
return self;
}
static id initWithComponentDescriptionAndJuceClass (id _self, SEL, AudioComponentDescription descr, AudioComponentInstantiationOptions options, NSError** error, JuceAudioUnitv3Base* juceAU)
{
AUAudioUnit* self = _self;
objc_super s = { self, [AUAudioUnit class] };
self = ObjCMsgSendSuper<AUAudioUnit*, AudioComponentDescription,
AudioComponentInstantiationOptions, NSError**> (&s, @selector(initWithComponentDescription:options:error:), descr, options, error);
setThis (self, juceAU);
return self;
}
static void dealloc (id self, SEL)
{
if (! MessageManager::getInstance()->isThisTheMessageThread())
{
WaitableEvent deletionEvent;
struct AUDeleter : public CallbackMessage
{
AUDeleter (id selfToDelete, WaitableEvent& event)
: parentSelf (selfToDelete), parentDeletionEvent (event)
{
}
void messageCallback() override
{
delete _this (parentSelf);
parentDeletionEvent.signal();
}
id parentSelf;
WaitableEvent& parentDeletionEvent;
};
(new AUDeleter (self, deletionEvent))->post();
deletionEvent.wait (-1);
}
else
{
delete _this (self);
}
}
//==============================================================================
static void reset (id self, SEL) { _this (self)->reset(); }
//==============================================================================
static AUAudioUnitPreset* getCurrentPreset (id self, SEL) { return _this (self)->getCurrentPreset(); }
static void setCurrentPreset (id self, SEL, AUAudioUnitPreset* preset) { return _this (self)->setCurrentPreset (preset); }
static NSArray<AUAudioUnitPreset*>* getFactoryPresets (id self, SEL) { return _this (self)->getFactoryPresets(); }
static NSDictionary<NSString*, id>* getFullState (id self, SEL) { return _this (self)->getFullState(); }
static void setFullState (id self, SEL, NSDictionary<NSString *, id>* state) { return _this (self)->setFullState (state); }
static AUParameterTree* getParameterTree (id self, SEL) { return _this (self)->getParameterTree(); }
static NSArray<NSNumber*>* parametersForOverviewWithCount (id self, SEL, NSInteger count) { return _this (self)->parametersForOverviewWithCount (static_cast<int> (count)); }
//==============================================================================
static NSTimeInterval getLatency (id self, SEL) { return _this (self)->getLatency(); }
static NSTimeInterval getTailTime (id self, SEL) { return _this (self)->getTailTime(); }
//==============================================================================
static AUAudioUnitBusArray* getInputBusses (id self, SEL) { return _this (self)->getInputBusses(); }
static AUAudioUnitBusArray* getOutputBusses (id self, SEL) { return _this (self)->getOutputBusses(); }
static NSArray<NSNumber*>* getChannelCapabilities (id self, SEL) { return _this (self)->getChannelCapabilities(); }
static BOOL shouldChangeToFormat (id self, SEL, AVAudioFormat* format, AUAudioUnitBus* bus) { return _this (self)->shouldChangeToFormat (format, bus) ? YES : NO; }
//==============================================================================
static NSInteger getVirtualMIDICableCount (id self, SEL) { return _this (self)->getVirtualMIDICableCount(); }
static BOOL getSupportsMPE (id self, SEL) { return _this (self)->getSupportsMPE() ? YES : NO; }
static NSArray<NSString*>* getMIDIOutputNames (id self, SEL) { return _this (self)->getMIDIOutputNames(); }
//==============================================================================
static AUInternalRenderBlock getInternalRenderBlock (id self, SEL) { return _this (self)->getInternalRenderBlock(); }
static BOOL getCanProcessInPlace (id self, SEL) { return _this (self)->getCanProcessInPlace() ? YES : NO; }
static BOOL getRenderingOffline (id self, SEL) { return _this (self)->getRenderingOffline() ? YES : NO; }
static void setRenderingOffline (id self, SEL, BOOL renderingOffline) { _this (self)->setRenderingOffline (renderingOffline); }
static BOOL allocateRenderResourcesAndReturnError (id self, SEL, NSError** error) { return _this (self)->allocateRenderResourcesAndReturnError (error) ? YES : NO; }
static void deallocateRenderResources (id self, SEL) { _this (self)->deallocateRenderResources(); }
//==============================================================================
static NSString* getContextName (id self, SEL) { return _this (self)->getContextName(); }
static void setContextName (id self, SEL, NSString* str) { return _this (self)->setContextName (str); }
//==============================================================================
#if JUCE_AUV3_VIEW_CONFIG_SUPPORTED
static NSIndexSet* getSupportedViewConfigurations (id self, SEL, NSArray<AUAudioUnitViewConfiguration*>* configs) { return _this (self)->getSupportedViewConfigurations (configs); }
static void selectViewConfiguration (id self, SEL, AUAudioUnitViewConfiguration* config) { _this (self)->selectViewConfiguration (config); }
#endif
};
static JuceAudioUnitv3Base* create (AUAudioUnit*, AudioComponentDescription, AudioComponentInstantiationOptions, NSError**);
//==============================================================================
static Class audioUnitObjCClass;
protected:
AUAudioUnit* au;
};
//==============================================================================
JuceAudioUnitv3Base::Class JuceAudioUnitv3Base::audioUnitObjCClass;
//==============================================================================
//=========================== The actual AudioUnit =============================
//==============================================================================
class JuceAudioUnitv3 : public JuceAudioUnitv3Base,
public AudioProcessorListener,
public AudioPlayHead
{
public:
JuceAudioUnitv3 (const AudioProcessorHolder::Ptr& processor,
const AudioComponentDescription& descr,
AudioComponentInstantiationOptions options,
NSError** error)
: JuceAudioUnitv3Base (descr, options, error),
processorHolder (processor),
mapper (*processorHolder->get())
{
init();
}
JuceAudioUnitv3 (AUAudioUnit* audioUnit, AudioComponentDescription, AudioComponentInstantiationOptions, NSError**)
: JuceAudioUnitv3Base (audioUnit),
processorHolder (new AudioProcessorHolder (createPluginFilterOfType (AudioProcessor::wrapperType_AudioUnitv3))),
mapper (*processorHolder->get())
{
init();
}
~JuceAudioUnitv3()
{
auto& processor = getAudioProcessor();
processor.removeListener (this);
removeEditor (processor);
if (editorObserverToken != nullptr)
{
[paramTree removeParameterObserver: editorObserverToken];
editorObserverToken = nullptr;
}
}
//==============================================================================
void init()
{
inParameterChangedCallback = false;
AudioProcessor& processor = getAudioProcessor();
const AUAudioFrameCount maxFrames = [getAudioUnit() maximumFramesToRender];
#ifdef JucePlugin_PreferredChannelConfigurations
short configs[][2] = {JucePlugin_PreferredChannelConfigurations};
const int numConfigs = sizeof (configs) / sizeof (short[2]);
jassert (numConfigs > 0 && (configs[0][0] > 0 || configs[0][1] > 0));
processor.setPlayConfigDetails (configs[0][0], configs[0][1], kDefaultSampleRate, static_cast<int> (maxFrames));
Array<AUChannelInfo> channelInfos;
for (int i = 0; i < numConfigs; ++i)
{
AUChannelInfo channelInfo;
channelInfo.inChannels = configs[i][0];
channelInfo.outChannels = configs[i][1];
channelInfos.add (channelInfo);
}
#else
Array<AUChannelInfo> channelInfos = AudioUnitHelpers::getAUChannelInfo (processor);
#endif
processor.setPlayHead (this);
totalInChannels = processor.getTotalNumInputChannels();
totalOutChannels = processor.getTotalNumOutputChannels();
{
channelCapabilities = [[NSMutableArray<NSNumber*> alloc] init];
for (int i = 0; i < channelInfos.size(); ++i)
{
AUChannelInfo& info = channelInfos.getReference (i);
[channelCapabilities addObject: [NSNumber numberWithInteger: info.inChannels]];
[channelCapabilities addObject: [NSNumber numberWithInteger: info.outChannels]];
}
}
editorObserverToken = nullptr;
internalRenderBlock = CreateObjCBlock (this, &JuceAudioUnitv3::renderCallback);
processor.setRateAndBufferSizeDetails (kDefaultSampleRate, static_cast<int> (maxFrames));
processor.prepareToPlay (kDefaultSampleRate, static_cast<int> (maxFrames));
processor.addListener (this);
addParameters();
addPresets();
addAudioUnitBusses (true);
addAudioUnitBusses (false);
}
AudioProcessor& getAudioProcessor() const noexcept { return **processorHolder; }
//==============================================================================
void reset() override
{
midiMessages.clear();
lastTimeStamp.mSampleTime = std::numeric_limits<Float64>::max();
}
//==============================================================================
AUAudioUnitPreset* getCurrentPreset() override
{
const int n = static_cast<int> ([factoryPresets count]);
const int idx = static_cast<int> (getAudioProcessor().getCurrentProgram());
if (idx < n)
return [factoryPresets objectAtIndex:static_cast<unsigned int> (idx)];
return nullptr;
}
void setCurrentPreset(AUAudioUnitPreset* preset) override
{
const int n = static_cast<int> ([factoryPresets count]);
const int idx = static_cast<int> ([preset number]);
if (isPositiveAndBelow (idx, n))
getAudioProcessor().setCurrentProgram (idx);
}
NSArray<AUAudioUnitPreset*>* getFactoryPresets() override
{
return factoryPresets;
}
NSDictionary<NSString*, id>* getFullState() override
{
NSMutableDictionary<NSString*, id>* retval = [[NSMutableDictionary<NSString*, id> alloc] init];
{
NSDictionary<NSString*, id>* superRetval = JuceAudioUnitv3Base::getFullState();
if (superRetval != nullptr)
[retval addEntriesFromDictionary:superRetval];
}
juce::MemoryBlock state;
getAudioProcessor().getCurrentProgramStateInformation (state);
if (state.getSize() > 0)
{
NSData* ourState = [[NSData alloc] initWithBytes: state.getData()
length: state.getSize()];
NSString* nsKey = [[NSString alloc] initWithUTF8String: JUCE_STATE_DICTIONARY_KEY];
[retval setObject: ourState
forKey: nsKey];
[nsKey release];
[ourState release];
}
return [retval autorelease];
}
void setFullState (NSDictionary<NSString*, id>* state) override
{
if (state == nullptr)
return;
NSMutableDictionary<NSString*, id>* modifiedState = [[NSMutableDictionary<NSString*, id> alloc] init];
[modifiedState addEntriesFromDictionary: state];
NSString* nsPresetKey = [[NSString alloc] initWithUTF8String: kAUPresetDataKey];
[modifiedState removeObjectForKey: nsPresetKey];
[nsPresetKey release];
JuceAudioUnitv3Base::setFullState (modifiedState);
NSString* nsKey = [[NSString alloc] initWithUTF8String: JUCE_STATE_DICTIONARY_KEY];
NSObject* obj = [modifiedState objectForKey: nsKey];
[nsKey release];
if (obj != nullptr)
{
if ([obj isKindOfClass:[NSData class]])
{
NSData* data = reinterpret_cast<NSData*> (obj);
const int numBytes = static_cast<int> ([data length]);
const juce::uint8* const rawBytes = reinterpret_cast< const juce::uint8* const> ([data bytes]);
if (numBytes > 0)
getAudioProcessor().setCurrentProgramStateInformation (rawBytes, numBytes);
}
}
[modifiedState release];
}
AUParameterTree* getParameterTree() override
{
return paramTree;
}
NSArray<NSNumber*>* parametersForOverviewWithCount (int count) override
{
const int n = static_cast<int> ([overviewParams count]);
if (count >= n)
return overviewParams;
NSMutableArray<NSNumber*>* retval = [[NSMutableArray<NSNumber*>alloc] initWithArray: overviewParams];
[retval removeObjectsInRange: NSMakeRange (static_cast<unsigned int> (count), static_cast<unsigned int> (n - count))];
return [retval autorelease];
}
//==============================================================================
NSTimeInterval getLatency() override
{
auto& p = getAudioProcessor();
return p.getLatencySamples() / p.getSampleRate();
}
NSTimeInterval getTailTime() override
{
return getAudioProcessor().getTailLengthSeconds();
}
//==============================================================================
AUAudioUnitBusArray* getInputBusses() override { return inputBusses; }
AUAudioUnitBusArray* getOutputBusses() override { return outputBusses; }
NSArray<NSNumber*>* getChannelCapabilities() override { return channelCapabilities; }
bool shouldChangeToFormat (AVAudioFormat* format, AUAudioUnitBus* auBus) override
{
const bool isInput = ([auBus busType] == AUAudioUnitBusTypeInput);
const int busIdx = static_cast<int> ([auBus index]);
const int newNumChannels = static_cast<int> ([format channelCount]);
AudioProcessor& processor = getAudioProcessor();
if (AudioProcessor::Bus* bus = processor.getBus (isInput, busIdx))
{
#ifdef JucePlugin_PreferredChannelConfigurations
ignoreUnused (bus);
short configs[][2] = {JucePlugin_PreferredChannelConfigurations};
if (! AudioUnitHelpers::isLayoutSupported (processor, isInput, busIdx, newNumChannels, configs))
return false;
#else
const AVAudioChannelLayout* layout = [format channelLayout];
const AudioChannelLayoutTag layoutTag = (layout != nullptr ? [layout layoutTag] : 0);
if (layoutTag != 0)
{
AudioChannelSet newLayout = CoreAudioLayouts::fromCoreAudio (layoutTag);
if (newLayout.size() != newNumChannels)
return false;
if (! bus->isLayoutSupported (newLayout))
return false;
}
else
{
if (! bus->isNumberOfChannelsSupported (newNumChannels))
return false;
}
#endif
return true;
}
return false;
}
//==============================================================================
int getVirtualMIDICableCount() override
{
#if JucePlugin_WantsMidiInput
return 1;
#else
return 0;
#endif
}
bool getSupportsMPE() override
{
return getAudioProcessor().supportsMPE();
}
NSArray<NSString*>* getMIDIOutputNames() override
{
#if JucePlugin_ProducesMidiOutput
return @[@"MIDI Out"];
#else
return @[];
#endif
}
//==============================================================================
AUInternalRenderBlock getInternalRenderBlock() override { return internalRenderBlock; }
bool getRenderingOffline() override { return getAudioProcessor().isNonRealtime(); }
void setRenderingOffline (bool offline) override
{
auto& processor = getAudioProcessor();
auto isCurrentlyNonRealtime = processor.isNonRealtime();
if (isCurrentlyNonRealtime != offline)
{
ScopedLock callbackLock (processor.getCallbackLock());
processor.setNonRealtime (offline);
processor.prepareToPlay (processor.getSampleRate(), processor.getBlockSize());
}
}
//==============================================================================
NSString* getContextName() const override { return juceStringToNS (contextName); }
void setContextName (NSString* str) override
{
if (str != nullptr)
{
AudioProcessor::TrackProperties props;
props.name = nsStringToJuce (str);
getAudioProcessor().updateTrackProperties (props);
}
}
//==============================================================================
bool allocateRenderResourcesAndReturnError (NSError **outError) override
{
AudioProcessor& processor = getAudioProcessor();
const AUAudioFrameCount maxFrames = [getAudioUnit() maximumFramesToRender];
if (! JuceAudioUnitv3Base::allocateRenderResourcesAndReturnError (outError))
return false;
if (outError != nullptr)
*outError = nullptr;
AudioProcessor::BusesLayout layouts;
for (int dir = 0; dir < 2; ++dir)
{
const bool isInput = (dir == 0);
const int n = AudioUnitHelpers::getBusCount (&processor, isInput);
Array<AudioChannelSet>& channelSets = (isInput ? layouts.inputBuses : layouts.outputBuses);
AUAudioUnitBusArray* auBuses = (isInput ? [getAudioUnit() inputBusses] : [getAudioUnit() outputBusses]);
jassert ([auBuses count] == static_cast<NSUInteger> (n));
for (int busIdx = 0; busIdx < n; ++busIdx)
{
AudioProcessor::Bus* bus = processor.getBus (isInput, busIdx);
AVAudioFormat* format = [[auBuses objectAtIndexedSubscript:static_cast<NSUInteger> (busIdx)] format];
AudioChannelSet newLayout;
const AVAudioChannelLayout* layout = [format channelLayout];
const AudioChannelLayoutTag layoutTag = (layout != nullptr ? [layout layoutTag] : 0);
if (layoutTag != 0)
newLayout = CoreAudioLayouts::fromCoreAudio (layoutTag);
else
newLayout = bus->supportedLayoutWithChannels (static_cast<int> ([format channelCount]));
if (newLayout.isDisabled())
return false;
channelSets.add (newLayout);
}
}
#ifdef JucePlugin_PreferredChannelConfigurations
short configs[][2] = {JucePlugin_PreferredChannelConfigurations};
if (! AudioProcessor::containsLayout (layouts, configs))
{
if (outError != nullptr)
*outError = [NSError errorWithDomain:NSOSStatusErrorDomain code:kAudioUnitErr_FormatNotSupported userInfo:nullptr];
return false;
}
#endif
if (! AudioUnitHelpers::setBusesLayout (&getAudioProcessor(), layouts))
{
if (outError != nullptr)
*outError = [NSError errorWithDomain:NSOSStatusErrorDomain code:kAudioUnitErr_FormatNotSupported userInfo:nullptr];
return false;
}
totalInChannels = processor.getTotalNumInputChannels();
totalOutChannels = processor.getTotalNumOutputChannels();
allocateBusBuffer (true);
allocateBusBuffer (false);
mapper.alloc();
audioBuffer.prepare (totalInChannels, totalOutChannels, static_cast<int> (maxFrames));
double sampleRate = (jmax (AudioUnitHelpers::getBusCount (&processor, true), AudioUnitHelpers::getBusCount (&processor, false)) > 0 ?
[[[([inputBusses count] > 0 ? inputBusses : outputBusses) objectAtIndexedSubscript: 0] format] sampleRate] : 44100.0);
processor.setRateAndBufferSizeDetails (sampleRate, static_cast<int> (maxFrames));
processor.prepareToPlay (sampleRate, static_cast<int> (maxFrames));
zeromem (&lastAudioHead, sizeof (lastAudioHead));
hostMusicalContextCallback = [getAudioUnit() musicalContextBlock];
hostTransportStateCallback = [getAudioUnit() transportStateBlock];
reset();
return true;
}
void deallocateRenderResources() override
{
hostMusicalContextCallback = nullptr;
hostTransportStateCallback = nullptr;
getAudioProcessor().releaseResources();
audioBuffer.release();
inBusBuffers. clear();
outBusBuffers.clear();
mapper.release();
JuceAudioUnitv3Base::deallocateRenderResources();
}
//==============================================================================
#if JUCE_AUV3_VIEW_CONFIG_SUPPORTED
NSIndexSet* getSupportedViewConfigurations (NSArray<AUAudioUnitViewConfiguration*>* configs) override
{
auto supportedViewIndecies = [[NSMutableIndexSet alloc] init];
auto n = [configs count];
if (auto* editor = getAudioProcessor().createEditorIfNeeded())
{
// If you hit this assertion then your plug-in's editor is reporting that it doesn't support
// any host MIDI controller configurations!
jassert (editor->supportsHostMIDIControllerPresence (true) || editor->supportsHostMIDIControllerPresence (false));
for (auto i = 0u; i < n; ++i)
{
if (auto* viewConfiguration = [configs objectAtIndex:i])
{
if (editor->supportsHostMIDIControllerPresence ([viewConfiguration hostHasController] == YES))
{
auto* constrainer = editor->getConstrainer();
auto height = (int) [viewConfiguration height];
auto width = (int) [viewConfiguration width];
if (height <= constrainer->getMaximumHeight() && height >= constrainer->getMinimumHeight()
&& width <= constrainer->getMaximumWidth() && width >= constrainer->getMinimumWidth())
[supportedViewIndecies addIndex: i];
}
}
}
}
return [supportedViewIndecies autorelease];
}
void selectViewConfiguration (AUAudioUnitViewConfiguration* config) override
{
processorHolder->viewConfiguration = new AudioProcessorHolder::ViewConfig { [config width], [config height], [config hostHasController] == YES };
}
#endif
//==============================================================================
void audioProcessorChanged (AudioProcessor* processor) override
{
ignoreUnused (processor);
[au willChangeValueForKey: @"allParameterValues"];
addPresets();
[au didChangeValueForKey: @"allParameterValues"];
}
void audioProcessorParameterChanged (AudioProcessor*, int idx, float newValue) override
{
if (inParameterChangedCallback.get())
{
inParameterChangedCallback = false;
return;
}
if (isPositiveAndBelow (idx, juceParameters.getNumParameters()))
{
if (AUParameter* param = [paramTree parameterWithAddress: getAUParameterAddressForIndex (idx)])
{
if (editorObserverToken != nullptr)
[param setValue: newValue originator: editorObserverToken];
else
[param setValue: newValue];
}
}
}
//==============================================================================
bool getCurrentPosition (CurrentPositionInfo& info) override
{
bool musicContextCallSucceeded = false;
bool transportStateCallSucceeded = false;
info = lastAudioHead;
info.timeInSamples = (int64) (lastTimeStamp.mSampleTime + 0.5);
info.timeInSeconds = info.timeInSamples / getAudioProcessor().getSampleRate();
switch (lastTimeStamp.mSMPTETime.mType)
{
case kSMPTETimeType2398: info.frameRate = AudioPlayHead::fps23976; break;
case kSMPTETimeType24: info.frameRate = AudioPlayHead::fps24; break;
case kSMPTETimeType25: info.frameRate = AudioPlayHead::fps25; break;
case kSMPTETimeType2997: info.frameRate = AudioPlayHead::fps2997; break;
case kSMPTETimeType2997Drop: info.frameRate = AudioPlayHead::fps2997drop; break;
case kSMPTETimeType30Drop: info.frameRate = AudioPlayHead::fps30drop; break;
case kSMPTETimeType30: info.frameRate = AudioPlayHead::fps30; break;
case kSMPTETimeType60Drop: info.frameRate = AudioPlayHead::fps60drop; break;
case kSMPTETimeType60: info.frameRate = AudioPlayHead::fps60; break;
default: info.frameRate = AudioPlayHead::fpsUnknown; break;
}
double num;
NSInteger den;
NSInteger outDeltaSampleOffsetToNextBeat;
double outCurrentMeasureDownBeat, bpm;
double ppqPosition;
if (hostMusicalContextCallback != nullptr)
{
AUHostMusicalContextBlock musicalContextCallback = hostMusicalContextCallback;
if (musicalContextCallback (&bpm, &num, &den, &ppqPosition, &outDeltaSampleOffsetToNextBeat, &outCurrentMeasureDownBeat))
{
musicContextCallSucceeded = true;
info.timeSigNumerator = (int) num;
info.timeSigDenominator = (int) den;
info.ppqPositionOfLastBarStart = outCurrentMeasureDownBeat;
info.bpm = bpm;
info.ppqPosition = ppqPosition;
info.ppqPositionOfLastBarStart = outCurrentMeasureDownBeat;
}
}
double outCurrentSampleInTimeLine, outCycleStartBeat = 0, outCycleEndBeat = 0;
AUHostTransportStateFlags flags;
if (hostTransportStateCallback != nullptr)
{
AUHostTransportStateBlock transportStateCallback = hostTransportStateCallback;
if (transportStateCallback (&flags, &outCurrentSampleInTimeLine, &outCycleStartBeat, &outCycleEndBeat))
{
transportStateCallSucceeded = true;
info.timeInSamples = (int64) (outCurrentSampleInTimeLine + 0.5);
info.timeInSeconds = info.timeInSamples / getAudioProcessor().getSampleRate();
info.isPlaying = ((flags & AUHostTransportStateMoving) != 0);
info.isLooping = ((flags & AUHostTransportStateCycling) != 0);
info.isRecording = ((flags & AUHostTransportStateRecording) != 0);
info.ppqLoopStart = outCycleStartBeat;
info.ppqLoopEnd = outCycleEndBeat;
}
}
if (musicContextCallSucceeded && transportStateCallSucceeded)
lastAudioHead = info;
return true;
}
//==============================================================================
static void removeEditor (AudioProcessor& processor)