AEExpanderFilter.h
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1 //
2 // AEExpanderFilter.h
3 // The Amazing Audio Engine
4 //
5 // Created by Michael Tyson on 09/07/2011.
6 //
7 // This software is provided 'as-is', without any express or implied
8 // warranty. In no event will the authors be held liable for any damages
9 // arising from the use of this software.
10 //
11 // Permission is granted to anyone to use this software for any purpose,
12 // including commercial applications, and to alter it and redistribute it
13 // freely, subject to the following restrictions:
14 //
15 // 1. The origin of this software must not be misrepresented; you must not
16 // claim that you wrote the original software. If you use this software
17 // in a product, an acknowledgment in the product documentation would be
18 // appreciated but is not required.
19 //
20 // 2. Altered source versions must be plainly marked as such, and must not be
21 // misrepresented as being the original software.
22 //
23 // 3. This notice may not be removed or altered from any source distribution.
24 //
25 
26 #ifdef __cplusplus
27 extern "C" {
28 #endif
29 
30 #import <Foundation/Foundation.h>
31 #import "TheAmazingAudioEngine.h"
32 
33 #define AEExpanderFilterRatioGateMode 0
34 
48 typedef enum {
49  AEExpanderFilterPresetNone=-1,
50  AEExpanderFilterPresetSmooth=0,
51  AEExpanderFilterPresetMedium=1,
52  AEExpanderFilterPresetPercussive=2
53 } AEExpanderFilterPreset;
54 
61 @interface AEExpanderFilter : NSObject <AEAudioFilter>
62 
66 - (id)init;
67 
71 - (void)assignPreset:(AEExpanderFilterPreset)preset;
72 
83 - (void)startCalibratingWithCompletionBlock:(void (^)(void))block;
84 
85 @property (nonatomic, assign) float ratio;
86 @property (nonatomic, assign) double threshold;
87 @property (nonatomic, assign) double hysteresis;
88 @property (nonatomic, assign) NSTimeInterval attack;
89 @property (nonatomic, assign) NSTimeInterval decay;
90 
91 @end
92 
93 #ifdef __cplusplus
94 }
95 #endif