/*

     File: MyGreatAUEffectWithCocoaUI.cpp

 Abstract: Audio Unit class implementation.

  Version: 1.0.1

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*/

#include "MyGreatAUEffectWithCocoaUI.h"

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

// COMPONENT_ENTRY(MyGreatAUEffectWithCocoaUI) deprecated on MacOS X 10.7 see TN2276 

AUDIOCOMPONENT_ENTRY(AUBaseFactory, MyGreatAUEffectWithCocoaUI)

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

//  MyGreatAUEffectWithCocoaUI::MyGreatAUEffectWithCocoaUI

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

MyGreatAUEffectWithCocoaUI::MyGreatAUEffectWithCocoaUI(AudioUnit component)

    : AUEffectBase(component)

{

    CreateElements();

    Globals()->UseIndexedParameters(kNumberOfParameters);

    SetParameter(kParam_One, kDefaultValue_ParamOne );

#if AU_DEBUG_DISPATCHER

    mDebugDispatcher = new AUDebugDispatcher (this);

#endif

}

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

//  MyGreatAUEffectWithCocoaUI::GetParameterValueStrings

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

OSStatus            MyGreatAUEffectWithCocoaUI::GetParameterValueStrings(AudioUnitScope     inScope,

                                                                AudioUnitParameterID    inParameterID,

                                                                CFArrayRef *        outStrings)

{

    return kAudioUnitErr_InvalidProperty;

}

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

//  MyGreatAUEffectWithCocoaUI::GetParameterInfo

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

OSStatus            MyGreatAUEffectWithCocoaUI::GetParameterInfo(AudioUnitScope     inScope,

                                                        AudioUnitParameterID    inParameterID,

                                                        AudioUnitParameterInfo  &outParameterInfo )

{

    OSStatus result = noErr;

    outParameterInfo.flags =    kAudioUnitParameterFlag_IsWritable

                        |       kAudioUnitParameterFlag_IsReadable;

    if (inScope == kAudioUnitScope_Global) {

        switch(inParameterID)

        {

            case kParam_One:

                AUBase::FillInParameterName (outParameterInfo, kParameterOneName, false);

                outParameterInfo.unit = kAudioUnitParameterUnit_LinearGain;

                outParameterInfo.minValue = 0.0;

                outParameterInfo.maxValue = 1;

                outParameterInfo.defaultValue = kDefaultValue_ParamOne;

                break;

            default:

                result = kAudioUnitErr_InvalidParameter;

                break;

            }

    } else {

        result = kAudioUnitErr_InvalidParameter;

    }

    return result;

}

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

//  MyGreatAUEffectWithCocoaUI::GetPropertyInfo

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

OSStatus            MyGreatAUEffectWithCocoaUI::GetPropertyInfo (AudioUnitPropertyID    inID,

                                                        AudioUnitScope      inScope,

                                                        AudioUnitElement    inElement,

                                                        UInt32 &        outDataSize,

                                                        Boolean &       outWritable)

{

    if (inScope == kAudioUnitScope_Global) 

    {

        switch (inID) 

        {

            case kAudioUnitProperty_CocoaUI:

                outWritable = false;

                outDataSize = sizeof (AudioUnitCocoaViewInfo);

                return noErr;

        }

    }

    return AUEffectBase::GetPropertyInfo (inID, inScope, inElement, outDataSize, outWritable);

}

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

//  MyGreatAUEffectWithCocoaUI::GetProperty

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

OSStatus            MyGreatAUEffectWithCocoaUI::GetProperty(    AudioUnitPropertyID inID,

                                                            AudioUnitScope      inScope,

                                                            AudioUnitElement    inElement,

                                                            void *              outData )

{

    if (inScope == kAudioUnitScope_Global) 

    {

        switch (inID) 

        {

            case kAudioUnitProperty_CocoaUI:

            {

                // Look for a resource in the main bundle by name and type.

                CFBundleRef bundle = CFBundleGetBundleWithIdentifier( CFSTR("com.audiounit.MyGreatAUEffectWithCocoaUI") );

                if (bundle == NULL) return fnfErr;

                CFURLRef bundleURL = CFBundleCopyResourceURL( bundle, 

                    CFSTR("MyGreatAUEffectWithCocoaUI_CocoaViewFactory"), 

                    CFSTR("bundle"), 

                    NULL);

                if (bundleURL == NULL) return fnfErr;

                AudioUnitCocoaViewInfo cocoaInfo;

                cocoaInfo.mCocoaAUViewBundleLocation = bundleURL;

                cocoaInfo.mCocoaAUViewClass[0] = CFStringCreateWithCString(NULL, "MyGreatAUEffectWithCocoaUI_CocoaViewFactory", kCFStringEncodingUTF8);

                *((AudioUnitCocoaViewInfo *)outData) = cocoaInfo;

                return noErr;

            }

        }

    }

    return AUEffectBase::GetProperty (inID, inScope, inElement, outData);

}

#pragma mark ____MyGreatAUEffectWithCocoaUIEffectKernel

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

//  MyGreatAUEffectWithCocoaUI::MyGreatAUEffectWithCocoaUIKernel::Reset()

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

void        MyGreatAUEffectWithCocoaUI::MyGreatAUEffectWithCocoaUIKernel::Reset()

{

}

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

//  MyGreatAUEffectWithCocoaUI::MyGreatAUEffectWithCocoaUIKernel::Process

//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

void MyGreatAUEffectWithCocoaUI::MyGreatAUEffectWithCocoaUIKernel::Process( const Float32   *inSourceP,

                                                    Float32         *inDestP,

                                                    UInt32          inFramesToProcess,

                                                    UInt32          inNumChannels, // for version 2 AudioUnits inNumChannels is always 1

                                                    bool            &ioSilence )

{

    //This code will pass-thru the audio data.

    //This is where you want to process data to produce an effect.

    UInt32 nSampleFrames = inFramesToProcess;

    const Float32 *sourceP = inSourceP;

    Float32 *destP = inDestP;

    Float32 gain = GetParameter( kParam_One );

    while (nSampleFrames-- > 0) {

        Float32 inputSample = *sourceP;

        //The current (version 2) AudioUnit specification *requires* 

        //non-interleaved format for all inputs and outputs. Therefore inNumChannels is always 1

        sourceP += inNumChannels;   // advance to next frame (e.g. if stereo, we're advancing 2 samples);

                                    // we're only processing one of an arbitrary number of interleaved channels

            // here's where you do your DSP work

                Float32 outputSample = inputSample * gain;

        *destP = outputSample;

        destP += inNumChannels;

    }

}