├── README.md
├── r2.xcodeproj
    ├── project.pbxproj
    ├── project.xcworkspace
    │   ├── contents.xcworkspacedata
    │   └── xcuserdata
    │   │   └── phil_busby.xcuserdatad
    │   │       ├── UserInterfaceState.xcuserstate
    │   │       └── WorkspaceSettings.xcsettings
    └── xcuserdata
    │   └── phil_busby.xcuserdatad
    │       ├── xcdebugger
    │           └── Breakpoints_v2.xcbkptlist
    │       └── xcschemes
    │           ├── Debug.xcscheme
    │           ├── Release.xcscheme
    │           └── xcschememanagement.plist
└── r2
    ├── AppDelegate.swift
    ├── Assets.xcassets
        ├── AppIcon.appiconset
        │   ├── Contents.json
        │   └── r2x1024.png
        └── Contents.json
    ├── Base.lproj
        └── Main.storyboard
    ├── EventMonitor.swift
    ├── Info.plist
    ├── MidiPlayer.swift
    ├── SinePlayer.swift
    ├── Tone.swift
    └── gs_instruments.dls


/README.md:
--------------------------------------------------------------------------------
1 | # R2
2 | This is a program that turns your keystrokes into music. It can be installed with the command
3 | 
4 |     brew cask install philihp/casket/r2
5 | 


--------------------------------------------------------------------------------
/r2.xcodeproj/project.pbxproj:
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37 |             BlueprintName = "R2"
38 |             ReferencedContainer = "container:r2.xcodeproj">
39 |          </BuildableReference>
40 |       </MacroExpansion>
41 |       <AdditionalOptions>
42 |       </AdditionalOptions>
43 |    </TestAction>
44 |    <LaunchAction
45 |       buildConfiguration = "Debug"
46 |       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
47 |       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
48 |       launchStyle = "0"
49 |       useCustomWorkingDirectory = "NO"
50 |       ignoresPersistentStateOnLaunch = "NO"
51 |       debugDocumentVersioning = "YES"
52 |       debugServiceExtension = "internal"
53 |       allowLocationSimulation = "YES">
54 |       <BuildableProductRunnable
55 |          runnableDebuggingMode = "0">
56 |          <BuildableReference
57 |             BuildableIdentifier = "primary"
58 |             BlueprintIdentifier = "2E66ED1C1EC7D0FB00FECB44"
59 |             BuildableName = "R2.app"
60 |             BlueprintName = "R2"
61 |             ReferencedContainer = "container:r2.xcodeproj">
62 |          </BuildableReference>
63 |       </BuildableProductRunnable>
64 |       <AdditionalOptions>
65 |       </AdditionalOptions>
66 |    </LaunchAction>
67 |    <ProfileAction
68 |       buildConfiguration = "Release"
69 |       shouldUseLaunchSchemeArgsEnv = "YES"
70 |       savedToolIdentifier = ""
71 |       useCustomWorkingDirectory = "NO"
72 |       debugDocumentVersioning = "YES">
73 |       <BuildableProductRunnable
74 |          runnableDebuggingMode = "0">
75 |          <BuildableReference
76 |             BuildableIdentifier = "primary"
77 |             BlueprintIdentifier = "2E66ED1C1EC7D0FB00FECB44"
78 |             BuildableName = "R2.app"
79 |             BlueprintName = "R2"
80 |             ReferencedContainer = "container:r2.xcodeproj">
81 |          </BuildableReference>
82 |       </BuildableProductRunnable>
83 |    </ProfileAction>
84 |    <AnalyzeAction
85 |       buildConfiguration = "Debug">
86 |    </AnalyzeAction>
87 |    <ArchiveAction
88 |       buildConfiguration = "Release"
89 |       revealArchiveInOrganizer = "YES">
90 |    </ArchiveAction>
91 | </Scheme>
92 | 


--------------------------------------------------------------------------------
/r2.xcodeproj/xcuserdata/phil_busby.xcuserdatad/xcschemes/Release.xcscheme:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <Scheme
 3 |    LastUpgradeVersion = "0830"
 4 |    version = "1.3">
 5 |    <BuildAction
 6 |       parallelizeBuildables = "YES"
 7 |       buildImplicitDependencies = "YES">
 8 |       <BuildActionEntries>
 9 |          <BuildActionEntry
10 |             buildForTesting = "YES"
11 |             buildForRunning = "YES"
12 |             buildForProfiling = "YES"
13 |             buildForArchiving = "YES"
14 |             buildForAnalyzing = "YES">
15 |             <BuildableReference
16 |                BuildableIdentifier = "primary"
17 |                BlueprintIdentifier = "2E66ED1C1EC7D0FB00FECB44"
18 |                BuildableName = "R2.app"
19 |                BlueprintName = "R2"
20 |                ReferencedContainer = "container:r2.xcodeproj">
21 |             </BuildableReference>
22 |          </BuildActionEntry>
23 |       </BuildActionEntries>
24 |    </BuildAction>
25 |    <TestAction
26 |       buildConfiguration = "Release"
27 |       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
28 |       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
29 |       shouldUseLaunchSchemeArgsEnv = "YES">
30 |       <Testables>
31 |       </Testables>
32 |       <MacroExpansion>
33 |          <BuildableReference
34 |             BuildableIdentifier = "primary"
35 |             BlueprintIdentifier = "2E66ED1C1EC7D0FB00FECB44"
36 |             BuildableName = "R2.app"
37 |             BlueprintName = "R2"
38 |             ReferencedContainer = "container:r2.xcodeproj">
39 |          </BuildableReference>
40 |       </MacroExpansion>
41 |       <AdditionalOptions>
42 |       </AdditionalOptions>
43 |    </TestAction>
44 |    <LaunchAction
45 |       buildConfiguration = "Release"
46 |       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
47 |       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
48 |       launchStyle = "0"
49 |       useCustomWorkingDirectory = "NO"
50 |       ignoresPersistentStateOnLaunch = "NO"
51 |       debugDocumentVersioning = "YES"
52 |       debugServiceExtension = "internal"
53 |       allowLocationSimulation = "YES">
54 |       <BuildableProductRunnable
55 |          runnableDebuggingMode = "0">
56 |          <BuildableReference
57 |             BuildableIdentifier = "primary"
58 |             BlueprintIdentifier = "2E66ED1C1EC7D0FB00FECB44"
59 |             BuildableName = "R2.app"
60 |             BlueprintName = "R2"
61 |             ReferencedContainer = "container:r2.xcodeproj">
62 |          </BuildableReference>
63 |       </BuildableProductRunnable>
64 |       <AdditionalOptions>
65 |       </AdditionalOptions>
66 |    </LaunchAction>
67 |    <ProfileAction
68 |       buildConfiguration = "Release"
69 |       shouldUseLaunchSchemeArgsEnv = "YES"
70 |       savedToolIdentifier = ""
71 |       useCustomWorkingDirectory = "NO"
72 |       debugDocumentVersioning = "YES">
73 |       <BuildableProductRunnable
74 |          runnableDebuggingMode = "0">
75 |          <BuildableReference
76 |             BuildableIdentifier = "primary"
77 |             BlueprintIdentifier = "2E66ED1C1EC7D0FB00FECB44"
78 |             BuildableName = "R2.app"
79 |             BlueprintName = "R2"
80 |             ReferencedContainer = "container:r2.xcodeproj">
81 |          </BuildableReference>
82 |       </BuildableProductRunnable>
83 |    </ProfileAction>
84 |    <AnalyzeAction
85 |       buildConfiguration = "Release">
86 |    </AnalyzeAction>
87 |    <ArchiveAction
88 |       buildConfiguration = "Release"
89 |       revealArchiveInOrganizer = "YES">
90 |    </ArchiveAction>
91 | </Scheme>
92 | 


--------------------------------------------------------------------------------
/r2.xcodeproj/xcuserdata/phil_busby.xcuserdatad/xcschemes/xcschememanagement.plist:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 3 | <plist version="1.0">
 4 | <dict>
 5 | 	<key>SchemeUserState</key>
 6 | 	<dict>
 7 | 		<key>Debug.xcscheme</key>
 8 | 		<dict>
 9 | 			<key>orderHint</key>
10 | 			<integer>0</integer>
11 | 		</dict>
12 | 		<key>Release.xcscheme</key>
13 | 		<dict>
14 | 			<key>orderHint</key>
15 | 			<integer>1</integer>
16 | 		</dict>
17 | 	</dict>
18 | 	<key>SuppressBuildableAutocreation</key>
19 | 	<dict>
20 | 		<key>2E66ED1C1EC7D0FB00FECB44</key>
21 | 		<dict>
22 | 			<key>primary</key>
23 | 			<true/>
24 | 		</dict>
25 | 	</dict>
26 | </dict>
27 | </plist>
28 | 


--------------------------------------------------------------------------------
/r2/AppDelegate.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  AppDelegate.swift
 3 | //  r2
 4 | //
 5 | //  Created by Philihp Busby on 2017-05-13.
 6 | //  Copyright © 2017 Philihp Busby. All rights reserved.
 7 | //
 8 | 
 9 | import Cocoa
10 | import AppKit
11 | 
12 | @NSApplicationMain
13 | class AppDelegate: NSObject, NSApplicationDelegate {
14 | 
15 |   var monitor: EventMonitor?
16 |   let sinePlayer = SinePlayer()
17 |   let midiPlayer = MidiPlayer()
18 | 
19 |   func applicationDidFinishLaunching(_ aNotification: Notification) {
20 |     trust()
21 |     monitor = EventMonitor(mask: [.leftMouseDown, .rightMouseDown, .keyDown, .keyUp]) { (event) in
22 | 
23 |       // using the sine player, you get annoying little pops at the end and beginning of all of the samples.
24 |       //self.sinePlayer.tone = Tone.rand().rawValue
25 |       //let tone = UInt8(arc4random_uniform(128))
26 | 
27 |       //let chord: [UInt8] = [0, 2, 4, 5, 7, 9, 11]
28 |       //let randomIndex = Int(arc4random_uniform(UInt32(chord.count)))
29 |       let note = UInt8(arc4random_uniform(20) + 60)
30 |       let time = Int(arc4random_uniform(2)+1)
31 | 
32 |       self.midiPlayer.sampler.startNote(note, withVelocity: 127, onChannel: 0)
33 |       Timer.scheduledTimer(withTimeInterval: Double(time) / 8, repeats: false) { timer in
34 |         self.midiPlayer.sampler.stopNote(note, onChannel: 0)
35 |       }
36 |     }
37 |     monitor?.start()
38 |   }
39 | 
40 |   func applicationWillTerminate(_ aNotification: Notification) {
41 |     monitor = nil
42 |   }
43 | 
44 |   func trust() {
45 |     let trusted = kAXTrustedCheckOptionPrompt.takeUnretainedValue() as NSString
46 |     let privOptions = [trusted: true]
47 |     AXIsProcessTrustedWithOptions(privOptions as CFDictionary?)
48 |   }
49 | 
50 | }
51 | 
52 | 


--------------------------------------------------------------------------------
/r2/Assets.xcassets/AppIcon.appiconset/Contents.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "images" : [
 3 |     {
 4 |       "idiom" : "mac",
 5 |       "size" : "16x16",
 6 |       "scale" : "1x"
 7 |     },
 8 |     {
 9 |       "idiom" : "mac",
10 |       "size" : "16x16",
11 |       "scale" : "2x"
12 |     },
13 |     {
14 |       "idiom" : "mac",
15 |       "size" : "32x32",
16 |       "scale" : "1x"
17 |     },
18 |     {
19 |       "idiom" : "mac",
20 |       "size" : "32x32",
21 |       "scale" : "2x"
22 |     },
23 |     {
24 |       "idiom" : "mac",
25 |       "size" : "128x128",
26 |       "scale" : "1x"
27 |     },
28 |     {
29 |       "idiom" : "mac",
30 |       "size" : "128x128",
31 |       "scale" : "2x"
32 |     },
33 |     {
34 |       "idiom" : "mac",
35 |       "size" : "256x256",
36 |       "scale" : "1x"
37 |     },
38 |     {
39 |       "idiom" : "mac",
40 |       "size" : "256x256",
41 |       "scale" : "2x"
42 |     },
43 |     {
44 |       "idiom" : "mac",
45 |       "size" : "512x512",
46 |       "scale" : "1x"
47 |     },
48 |     {
49 |       "size" : "512x512",
50 |       "idiom" : "mac",
51 |       "filename" : "r2x1024.png",
52 |       "scale" : "2x"
53 |     }
54 |   ],
55 |   "info" : {
56 |     "version" : 1,
57 |     "author" : "xcode"
58 |   }
59 | }


--------------------------------------------------------------------------------
/r2/Assets.xcassets/AppIcon.appiconset/r2x1024.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/philihp/R2/fcb320989929e82ffa85f548621e5e38180e9882/r2/Assets.xcassets/AppIcon.appiconset/r2x1024.png


--------------------------------------------------------------------------------
/r2/Assets.xcassets/Contents.json:
--------------------------------------------------------------------------------
1 | {
2 |   "info" : {
3 |     "version" : 1,
4 |     "author" : "xcode"
5 |   },
6 |   "properties" : {
7 |     "compression-type" : "lossless"
8 |   }
9 | }


--------------------------------------------------------------------------------
/r2/Base.lproj/Main.storyboard:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <document type="com.apple.InterfaceBuilder3.Cocoa.Storyboard.XIB" version="3.0" toolsVersion="12120" systemVersion="16E195" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES">
 3 |     <dependencies>
 4 |         <deployment identifier="macosx"/>
 5 |         <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="12120"/>
 6 |     </dependencies>
 7 |     <scenes>
 8 |         <!--Application-->
 9 |         <scene sceneID="JPo-4y-FX3">
10 |             <objects>
11 |                 <application id="hnw-xV-0zn" sceneMemberID="viewController">
12 |                     <menu key="mainMenu" title="Main Menu" systemMenu="main" id="AYu-sK-qS6">
13 |                         <items>
14 |                             <menuItem title="R2" id="1Xt-HY-uBw">
15 |                                 <modifierMask key="keyEquivalentModifierMask"/>
16 |                                 <menu key="submenu" title="R2" systemMenu="apple" id="uQy-DD-JDr">
17 |                                     <items>
18 |                                         <menuItem title="About r2" id="5kV-Vb-QxS">
19 |                                             <modifierMask key="keyEquivalentModifierMask"/>
20 |                                             <connections>
21 |                                                 <action selector="orderFrontStandardAboutPanel:" target="Ady-hI-5gd" id="Exp-CZ-Vem"/>
22 |                                             </connections>
23 |                                         </menuItem>
24 |                                         <menuItem isSeparatorItem="YES" id="VOq-y0-SEH"/>
25 |                                         <menuItem title="Preferences…" keyEquivalent="," id="BOF-NM-1cW"/>
26 |                                         <menuItem isSeparatorItem="YES" id="wFC-TO-SCJ"/>
27 |                                         <menuItem title="Services" id="NMo-om-nkz">
28 |                                             <modifierMask key="keyEquivalentModifierMask"/>
29 |                                             <menu key="submenu" title="Services" systemMenu="services" id="hz9-B4-Xy5"/>
30 |                                         </menuItem>
31 |                                         <menuItem isSeparatorItem="YES" id="4je-JR-u6R"/>
32 |                                         <menuItem title="Hide r2" keyEquivalent="h" id="Olw-nP-bQN">
33 |                                             <connections>
34 |                                                 <action selector="hide:" target="Ady-hI-5gd" id="PnN-Uc-m68"/>
35 |                                             </connections>
36 |                                         </menuItem>
37 |                                         <menuItem title="Hide Others" keyEquivalent="h" id="Vdr-fp-XzO">
38 |                                             <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
39 |                                             <connections>
40 |                                                 <action selector="hideOtherApplications:" target="Ady-hI-5gd" id="VT4-aY-XCT"/>
41 |                                             </connections>
42 |                                         </menuItem>
43 |                                         <menuItem title="Show All" id="Kd2-mp-pUS">
44 |                                             <modifierMask key="keyEquivalentModifierMask"/>
45 |                                             <connections>
46 |                                                 <action selector="unhideAllApplications:" target="Ady-hI-5gd" id="Dhg-Le-xox"/>
47 |                                             </connections>
48 |                                         </menuItem>
49 |                                         <menuItem isSeparatorItem="YES" id="kCx-OE-vgT"/>
50 |                                         <menuItem title="Quit r2" keyEquivalent="q" id="4sb-4s-VLi">
51 |                                             <connections>
52 |                                                 <action selector="terminate:" target="Ady-hI-5gd" id="Te7-pn-YzF"/>
53 |                                             </connections>
54 |                                         </menuItem>
55 |                                     </items>
56 |                                 </menu>
57 |                             </menuItem>
58 |                         </items>
59 |                     </menu>
60 |                     <connections>
61 |                         <outlet property="delegate" destination="Voe-Tx-rLC" id="PrD-fu-P6m"/>
62 |                     </connections>
63 |                 </application>
64 |                 <customObject id="Voe-Tx-rLC" customClass="AppDelegate" customModule="R2" customModuleProvider="target"/>
65 |                 <customObject id="Ady-hI-5gd" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
66 |             </objects>
67 |             <point key="canvasLocation" x="75" y="0.0"/>
68 |         </scene>
69 |     </scenes>
70 | </document>
71 | 


--------------------------------------------------------------------------------
/r2/EventMonitor.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  EventMonitor.swift
 3 | //  r2
 4 | //
 5 | //  Created by Philihp Busby on 2017-05-13.
 6 | //  Copyright © 2017 Philihp Busby. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | import AppKit
11 | 
12 | public class EventMonitor {
13 |   private var monitor: Any?
14 |   private let mask: NSEventMask
15 |   public typealias EventHandler = (NSEvent?) -> ()
16 |   private let handler: EventHandler
17 | 
18 |   public init(mask: NSEventMask, handler: @escaping EventHandler) {
19 |     self.mask = mask
20 |     self.handler = handler
21 |   }
22 | 
23 |   deinit {
24 |     stop()
25 |   }
26 | 
27 |   public func start() {
28 |     monitor = NSEvent.addGlobalMonitorForEvents(matching: mask, handler: handler)
29 |   }
30 | 
31 |   public func stop() {
32 |     if let monitor = monitor {
33 |       NSEvent.removeMonitor(monitor)
34 |       self.monitor = nil
35 |     }
36 |   }
37 | }
38 | 


--------------------------------------------------------------------------------
/r2/Info.plist:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 3 | <plist version="1.0">
 4 | <dict>
 5 | 	<key>CFBundleDevelopmentRegion</key>
 6 | 	<string>en</string>
 7 | 	<key>CFBundleExecutable</key>
 8 | 	<string>$(EXECUTABLE_NAME)</string>
 9 | 	<key>CFBundleIconFile</key>
10 | 	<string></string>
11 | 	<key>CFBundleIdentifier</key>
12 | 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
13 | 	<key>CFBundleInfoDictionaryVersion</key>
14 | 	<string>6.0</string>
15 | 	<key>CFBundleName</key>
16 | 	<string>R2</string>
17 | 	<key>CFBundlePackageType</key>
18 | 	<string>APPL</string>
19 | 	<key>CFBundleShortVersionString</key>
20 | 	<string>1.0</string>
21 | 	<key>CFBundleVersion</key>
22 | 	<string>1</string>
23 | 	<key>LSApplicationCategoryType</key>
24 | 	<string>public.app-category.entertainment</string>
25 | 	<key>LSMinimumSystemVersion</key>
26 | 	<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
27 | 	<key>NSHumanReadableCopyright</key>
28 | 	<string>Copyright © 2017 Philihp Busby. All rights reserved.</string>
29 | 	<key>NSMainStoryboardFile</key>
30 | 	<string>Main</string>
31 | 	<key>NSPrincipalClass</key>
32 | 	<string>NSApplication</string>
33 | </dict>
34 | </plist>
35 | 


--------------------------------------------------------------------------------
/r2/MidiPlayer.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  MidiPlayer.swift
 3 | //  http://stackoverflow.com/questions/33920157/playing-a-single-midi-note-from-gs-instruments-in-ios-swift
 4 | //
 5 | //  Created by Philihp Busby on 2017-05-14.
 6 | //  Copyright © 2017 Philihp Busby. All rights reserved.
 7 | //
 8 | 
 9 | import Foundation
10 | import AVFoundation
11 | 
12 | class MidiPlayer {
13 | 
14 |   public let engine = AVAudioEngine()
15 |   public let sampler = AVAudioUnitSampler()
16 | 
17 |   init() {
18 | 
19 |     engine.attach(self.sampler)
20 |     engine.connect(self.sampler, to: engine.outputNode, format: nil)
21 | 
22 |     guard let soundbank = Bundle.main.url(forResource: "gs_instruments", withExtension: "dls") else {
23 |       print("Could not initalize soundbank.")
24 |       return
25 |     }
26 | 
27 |     let patch:UInt8 = 81
28 |     let bank:UInt8 = UInt8(kAUSampler_DefaultBankLSB)//UInt8(kAUSampler_DefaultMelodicBankMSB)//
29 |     do {
30 | 
31 |       try engine.start()
32 |       try self.sampler.loadSoundBankInstrument(at: soundbank, program: patch, bankMSB: bank, bankLSB: 0)
33 | 
34 |     } catch {
35 |       print("An error occurred \(error)")
36 |       return
37 |     }
38 |   }
39 | 
40 | }
41 | 


--------------------------------------------------------------------------------
/r2/SinePlayer.swift:
--------------------------------------------------------------------------------
 1 | //
 2 | //  SinePlayer.swift
 3 | //  from: http://www.tmroyal.com/playing-sounds-in-swift-audioengine.html
 4 | //
 5 | 
 6 | import AVFoundation
 7 | 
 8 | class SinePlayer {
 9 |   // store persistent objects
10 |   var engine: AVAudioEngine
11 |   var player: AVAudioPlayerNode
12 | 
13 |   public var tone: Float = 441.0 {
14 |     didSet {
15 |       print(tone)
16 |       player.scheduleBuffer(makeBuffer(note: tone), at: nil, options: .interruptsAtLoop, completionHandler: nil)
17 |     }
18 |   }
19 | 
20 |   init() {
21 |     // initialize objects
22 |     engine = AVAudioEngine()
23 |     player = AVAudioPlayerNode()
24 | 
25 |     // setup audio engine
26 |     engine.attach(player)
27 |     engine.connect(player, to: engine.mainMixerNode, format: player.outputFormat(forBus: 0))
28 | 
29 |     do {
30 |       try engine.start()
31 |       player.play()
32 |     }
33 |     catch _ {}
34 |   }
35 | 
36 |   func makeBuffer(note: Float) -> AVAudioPCMBuffer {
37 |     let buffer = AVAudioPCMBuffer(pcmFormat: player.outputFormat(forBus: 0), frameCapacity: 2000)
38 |     buffer.frameLength = 2000
39 |     // generate sine wave
40 |     let sr:Float = Float(engine.mainMixerNode.outputFormat(forBus: 0).sampleRate)
41 |     let n_channels = engine.mainMixerNode.outputFormat(forBus: 0).channelCount
42 | 
43 |     var i = 0
44 |     while(i < Int(buffer.frameLength)) {
45 |       let val = sinf(tone * Float(i) * 2 * Float(Double.pi)/sr)
46 |       if let fcd = buffer.floatChannelData {
47 |         fcd.pointee[i] = val * 0.5
48 |       }
49 |       i += Int(n_channels)
50 |     }
51 |     return buffer
52 |   }
53 | 
54 | }
55 | 


--------------------------------------------------------------------------------
/r2/Tone.swift:
--------------------------------------------------------------------------------
  1 | //
  2 | //  Tone.swift
  3 | //  http://www.phy.mtu.edu/~suits/notefreqs.html
  4 | //
  5 | //  Created by Philihp Busby on 2017-05-13.
  6 | //  Copyright © 2017 Philihp Busby. All rights reserved.
  7 | //
  8 | 
  9 | import Foundation
 10 | 
 11 | enum Tone: Float {
 12 |   case C0 = 16.35
 13 |   case C0sh = 17.32
 14 |   case D0 = 18.35
 15 |   case D0sh = 19.45
 16 |   case E0 = 20.60
 17 |   case F0 = 21.83
 18 |   case F0sh = 23.12
 19 |   case G0 = 24.50
 20 |   case G0sh = 25.96
 21 |   case A0 = 27.50
 22 |   case A0sh = 29.14
 23 |   case B0 = 30.87
 24 |   case C1 = 32.70
 25 |   case C1sh = 34.65
 26 |   case D1 = 36.71
 27 |   case D1sh = 38.89
 28 |   case E1 = 41.20
 29 |   case F1 = 43.65
 30 |   case F1sh = 46.25
 31 |   case G1 = 49.00
 32 |   case G1sh = 51.91
 33 |   case A1 = 55.00
 34 |   case A1sh = 58.27
 35 |   case B1 = 61.74
 36 |   case C2 = 65.41
 37 |   case C2sh = 69.30
 38 |   case D2 = 73.42
 39 |   case D2sh = 77.78
 40 |   case E2 = 82.41
 41 |   case F2 = 87.31
 42 |   case F2sh = 92.50
 43 |   case G2 = 98.00
 44 |   case G2sh = 103.83
 45 |   case A2 = 110.00
 46 |   case A2sh = 116.54
 47 |   case B2 = 123.47
 48 |   case C3 = 130.81
 49 |   case C3sh = 138.59
 50 |   case D3 = 146.83
 51 |   case D3sh = 155.56
 52 |   case E3 = 164.81
 53 |   case F3 = 174.61
 54 |   case F3sh = 185.00
 55 |   case G3 = 196.00
 56 |   case G3sh = 207.65
 57 |   case A3 = 220.00
 58 |   case A3sh = 233.08
 59 |   case B3 = 246.94
 60 |   case C4 = 261.63
 61 |   case C4sh = 277.18
 62 |   case D4 = 293.66
 63 |   case D4sh = 311.13
 64 |   case E4 = 329.63
 65 |   case F4 = 349.23
 66 |   case F4sh = 369.99
 67 |   case G4 = 392.00
 68 |   case G4sh = 415.30
 69 |   case A4 = 440.00
 70 |   case A4sh = 466.16
 71 |   case B4 = 493.88
 72 |   case C5 = 523.25
 73 |   case C5sh = 554.37
 74 |   case D5 = 587.33
 75 |   case D5sh = 622.25
 76 |   case E5 = 659.25
 77 |   case F5 = 698.46
 78 |   case F5sh = 739.99
 79 |   case G5 = 783.99
 80 |   case G5sh = 830.61
 81 |   case A5 = 880.00
 82 |   case A5sh = 932.33
 83 |   case B5 = 987.77
 84 |   case C6 = 1046.50
 85 |   case C6sh = 1108.73
 86 |   case D6 = 1174.66
 87 |   case D6sh = 1244.51
 88 |   case E6 = 1318.51
 89 |   case F6 = 1396.91
 90 |   case F6sh = 1479.98
 91 |   case G6 = 1567.98
 92 |   case G6sh = 1661.22
 93 |   case A6 = 1760.00
 94 |   case A6sh = 1864.66
 95 |   case B6 = 1975.53
 96 |   case C7 = 2093.00
 97 |   case C7sh = 2217.46
 98 |   case D7 = 2349.32
 99 |   case D7sh = 2489.02
100 |   case E7 = 2637.02
101 |   case F7 = 2793.83
102 |   case F7sh = 2959.96
103 |   case G7 = 3135.96
104 |   case G7sh = 3322.44
105 |   case A7 = 3520.00
106 |   case A7sh = 3729.31
107 |   case B7 = 3951.07
108 |   case C8 = 4186.01
109 |   case C8sh = 4434.92
110 |   case D8 = 4698.63
111 |   case D8sh = 4978.03
112 |   case E8 = 5274.04
113 |   case F8 = 5587.65
114 |   case F8sh = 5919.91
115 |   case G8 = 6271.93
116 |   case G8sh = 6644.88
117 |   case A8 = 7040.00
118 |   case A8sh = 7458.62
119 |   case B8 = 7902.13
120 | 
121 |   public static func rand() -> Tone {
122 |     let tones:[Tone] =
123 |       [
124 | //       .C0, .C0sh, .D0, .D0sh, .E0, .F0, .F0sh, .G0, .G0sh, .A0, .A0sh, .B0,
125 | //       .C1, .C1sh, .D1, .D1sh, .E1, .F1, .F1sh, .G1, .G1sh, .A1, .A1sh, .B1,
126 | //       .C2, .C2sh, .D2, .D2sh, .E2, .F2, .F2sh, .G2, .G2sh, .A2, .A2sh, .B2,
127 |        .C3, .C3sh, .D3, .D3sh, .E3, .F3, .F3sh, .G3, .G3sh, .A3, .A3sh, .B3,
128 |        .C4, .C4sh, .D4, .D4sh, .E4, .F4, .F4sh, .G4, .G4sh, .A4, .A4sh, .B4,
129 |        .C5, .C5sh, .D5, .D5sh, .E5, .F5, .F5sh, .G5, .G5sh, .A5, .A5sh, .B5
130 | //       .C6, .C6sh, .D6, .D6sh, .E6, .F6, .F6sh, .G6, .G6sh, .A6, .A6sh, .B6,
131 | //       .C7, .C7sh, .D7, .D7sh, .E7, .F7, .F7sh, .G7, .G7sh, .A7, .A7sh, .B7,
132 | //       .C8, .C8sh, .D8, .D8sh, .E8, .F8, .F8sh, .G8, .G8sh, .A8, .A8sh, .B8
133 |       ]
134 |     let randomIndex = Int(arc4random_uniform(UInt32(tones.count)))
135 |     return tones[randomIndex]
136 |   }
137 | }
138 | 


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