/*

Copyright (C) 2016 Apple Inc. All Rights Reserved.

See LICENSE.txt for this sample’s licensing information

Abstract:

Pink Noise AU

*/

#include "AUBase.h"

#include "CAAudioChannelLayout.h"

#include "Pink.h"

#include <Carbon/Carbon.h>

#ifndef __AUPinkNoise_h__

#define __AUPinkNoise_h__

#include "AUPinkNoiseVersion.h"

#pragma mark ____AUPinkNoise Parameters

// parameters

static const float kDefaultValue_Volume = 0.7071;

static CFStringRef kParameterVolumeName = CFSTR("Volume");

static CFStringRef kParameterOnName = CFSTR("On/Off");

enum {

    kParam_Volume =0,

    kParam_On=1,

    kNumberOfParameters=2

};

#pragma mark ____AUPinkNoise

class AUPinkNoise : public AUBase

{

public:

                                AUPinkNoise(AudioUnit component);

    virtual void                Cleanup();

    virtual OSStatus            Initialize();

    virtual OSStatus            GetPropertyInfo(    AudioUnitPropertyID             inID,

                                                    AudioUnitScope                  inScope,

                                                    AudioUnitElement                inElement,

                                                    UInt32 &                        outDataSize,

                                                    Boolean &                       outWritable);

    virtual OSStatus            GetProperty(    AudioUnitPropertyID         inID,

                                                AudioUnitScope              inScope,

                                                AudioUnitElement            inElement,

                                                void *                      outData);

    virtual OSStatus            GetParameterInfo(   AudioUnitScope          inScope,

                                                    AudioUnitParameterID    inParameterID,

                                                    AudioUnitParameterInfo  &outParameterInfo);

    virtual OSStatus    Render( AudioUnitRenderActionFlags &ioActionFlags,

                                        const AudioTimeStamp &      inTimeStamp,

                                        UInt32                      nFrames);

    virtual bool                StreamFormatWritable(   AudioUnitScope                  scope,

                                                        AudioUnitElement                element);

    virtual UInt32              SupportedNumChannels(   const AUChannelInfo**           outInfo);

    virtual UInt32              GetChannelLayoutTags(   AudioUnitScope              scope,

                                                        AudioUnitElement            element,

                                                        AudioChannelLayoutTag *     outLayoutTags);

    virtual UInt32              GetAudioChannelLayout(  AudioUnitScope              scope,

                                                        AudioUnitElement            element,

                                                        AudioChannelLayout *        outLayoutPtr,

                                                        Boolean &                   outWritable);

    virtual OSStatus            SetAudioChannelLayout(  AudioUnitScope              scope, 

                                                        AudioUnitElement            element,

                                                        const AudioChannelLayout *  inLayout);

    virtual OSStatus            RemoveAudioChannelLayout(AudioUnitScope scope, AudioUnitElement element);

    virtual bool                SupportsTail () { return false; }

    /*! @method Version */

    virtual OSStatus            Version() { return kAUPinkNoiseVersion; }

    virtual bool                CanScheduleParameters() const { return false; }

private:

    PinkNoiseGenerator *mPink;

    CAAudioChannelLayout mOutputChannelLayout;

};

#endif