/*

    File:       ACInsertProcessor.h 

    Abstract:   This file implements the Audio Context Insert processor 

                object which does the actual processing for the insert. It

                is a wrapper around an Audio Unit, and implements the

                insert reset and process data callbacks.

    Version:    1.0

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    The Apple Software is provided by Apple on an "AS IS" basis.  APPLE

    MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION

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    FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND

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    Copyright © 2006-2008 Apple Inc. All Rights Reserved.

*/

#import <Cocoa/Cocoa.h>

#import <QuickTime/QuickTime.h>

#import <QTKit/QTKit.h>

#import <AudioToolbox/AudioToolbox.h>

#import <AudioUnit/AudioUnit.h>

#import "QuickTimeAudioUtils.h"

@class MovieDocument;

@interface ACInsertProcessor : NSObject  

{

    MovieDocument                   *mMovieDocument;

    AudioUnit                       mAudioUnit;

    Boolean                         mProcessorIsInitialized;

    AudioChannelLayout              mInputChannelLayout;

    AudioChannelLayout              mOutputChannelLayout;

    AudioStreamBasicDescription     mInputASBD;

    AudioStreamBasicDescription     mOutputASBD;

    AudioStreamBasicDescription     mMovieSummaryASBD;

    UInt32                          mMaxFrames;

    Float64                         mPlaybackSampleRate;

    AudioBufferList                 *mPullBuffer;

    Boolean                         mIsBypassed;

    Float64                         mLatency;

    Float64                         mTailTime;

}

- (id)initFromAUComponent:(Component)auComponent;

- (AudioUnit)audioUnit;

- (Boolean)processorIsInitialized;

- (AudioChannelLayoutTag)inputLayoutTag;

- (AudioChannelLayoutTag)outputLayoutTag;

- (void) aUIsBypassable:(BOOL*)isBypassable currentBypassState:(UInt32*)bypassState;

- (void)setAUBypassed:(UInt32)isBypassed;

- (void)setInputLayout:(AudioChannelLayoutTag)layoutTag;

- (void)setOutputLayout:(AudioChannelLayoutTag)layoutTag;

- (BOOL)canDoInputChannels:(int)inNumChannels outputChannels:(int)outNumChannels;

- (BOOL)canDoOutputChannels:(int)outNumChannels;

- (void)getRegistrationInformation:(QTAudioContextInsertRegistryInfo *)regInfo;

- (OSStatus)setAUFormatAndLayout;

- (OSStatus)setAURenderCallback;

- (void)setAUParametersToThoseOfAU:(AudioUnit)auToClone;

- (BOOL)IsElementCountWritableForScope:(AudioUnitScope)scope;

- (OSStatus)myAudioUnitInputProc:(AudioUnitRenderActionFlags *)ioActionFlags

                            timestamp:(const AudioTimeStamp *)inTimeStamp

                            bus:(UInt32)inBusNumber 

                            numFrames:(UInt32)inNumberFrames

                            buffer:(AudioBufferList *)ioData;

- (OSStatus)myInsertProcessDataCallback:(AudioUnitRenderActionFlags *)ioRenderFlags

                            timestamp:(const AudioTimeStamp *)inTimeStamp

                            numFrames:(UInt32)inNumberFrames

                            inData:(AudioBufferList *)inInputData

                            outData:(AudioBufferList *)outOutputData;

- (OSStatus)myInsertResetCallback:(Float64)inSampleRate

                    maxFrames:(UInt32)inMaxFrames

                    outLatency:(Float64*)outLatency

                    outTailTime:(Float64*)outTailTime;

@end