SndAudioProcessor.h

//
//  $Id: SndAudioProcessor.h 3449 2009-04-04 16:52:47Z leighsmith $
//
//  Description:
//    Heavily inspired by Steinberg's VST effects plugins for the moment
//
//  Original Author: SKoT McDonald, <skot@tomandandy.com>
//
//  Copyright (c) 2001, The MusicKit Project.  All rights reserved.
//
//  Permission is granted to use and modify this code for commercial and
//  non-commercial purposes so long as the author attribution and copyright
//  messages remain intact and accompany all relevant code.
//

#ifndef __SNDKIT_SNDAUDIOPROCESSOR_H__
#define __SNDKIT_SNDAUDIOPROCESSOR_H__

#import <Foundation/Foundation.h>

#import "SndAudioBuffer.h"
#import "SndAudioProcessorChain.h"


@interface SndAudioProcessor : NSObject {
    int numParams;
    SndAudioProcessorChain *audioProcessorChain;
    NSString *name;
    BOOL  active;
    id parameterDelegate;
}

+ (void) registerAudioProcessorClass: (id) fxclass;

+ (NSArray*) fxClasses;

+ (NSArray *) availableAudioProcessors;

+ audioProcessor;

+ (SndAudioProcessor *) audioProcessorNamed: (NSString *) processorName;

- init;

- initWithParamCount: (const int) count name: (NSString *) name;

- initWithParameterDictionary: (NSDictionary *) paramDictionary name: (NSString *) name;

- reset;

- (void) setNumParams: (const int) c;

- (int) paramCount;

- (float) paramValue: (const int) index;

- (NSString *) paramName: (const int) index;

- (NSString *) paramLabel: (const int) index;

- (NSString *) paramDisplay: (const int) index;

- (void) setParam: (const int) index toValue: (const float) value;

- (BOOL) processReplacingInputBuffer: (SndAudioBuffer *) inB
                        outputBuffer: (SndAudioBuffer *) outB;

- (void) setAudioProcessorChain: (SndAudioProcessorChain *) inChain;

- (SndAudioProcessorChain *) audioProcessorChain;

- (BOOL) isActive;

- setActive: (const BOOL) b;

- setName: (NSString *) aName;

- (NSString *) name;

- (NSDictionary *) paramDictionary;

- (void) setParamsWithDictionary: (NSDictionary *) paramDictionary;

- (void) setParamWithKey: (NSString *) keyName toValue: (NSNumber *) value;
// TODO - (void) setParamWithKey: (NSString *) keyName toValue: (NSValue *) value;


- (NSNumber *) paramObjectForIndex: (const int) i;
// TODO - (id) paramObjectForIndex: (const int) i;

- (void) setParameterDelegate: (id) delegate;

- (id) parameterDelegate;

@end

@protocol SndAudioProcessorParameterDelegate

- (void) parameter: (unsigned int) parameter 
  ofAudioProcessor: (SndAudioProcessor *) processor
       didChangeTo: (float) inValue;

@end

#endif

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