Added slider for sound input sensitivity

CaseLights/AppDelegate.m

 #define PREF_LED_MODE @"LEDMode"
 #define PREF_BRIGHTNESS @"Brightness"
 #define PREF_COLOR @"ManualColor"
+#define PREF_SENSITIVITY @"Sensitivity"
 
 #define TEXT_MANUAL @"Select..."
 #define TEXT_CPU_USAGE @"CPU Usage"
 @property (weak) IBOutlet NSMenuItem *menuItemAudio;
 @property (weak) IBOutlet NSMenu *menuAudio;
 @property (weak) IBOutlet NSMenu *menuPorts;
-
 @property (weak) IBOutlet NSMenuItem *buttonOff;
 @property (weak) IBOutlet NSMenuItem *brightnessItem;
 @property (weak) IBOutlet NSSlider *brightnessSlider;
 @property (weak) IBOutlet NSMenuItem *brightnessLabel;
 @property (weak) IBOutlet NSMenuItem *buttonLights;
+@property (weak) IBOutlet NSMenuItem *sensitivityItem;
+@property (weak) IBOutlet NSSlider *sensitivitySlider;
+@property (weak) IBOutlet NSMenuItem *sensitivityLabel;
+@property (weak) IBOutlet NSMenuItem *sensitivityMenu;
 
 @property (strong) NSMenuItem *menuItemColor;
 
 @synthesize menuItemAudio, menuAudio;
 @synthesize buttonOff, buttonLights;
 @synthesize brightnessItem, brightnessSlider, brightnessLabel;
+@synthesize sensitivityItem, sensitivitySlider, sensitivityLabel, sensitivityMenu;
 @synthesize statusItem, statusImage;
 @synthesize staticColors, animation;
 @synthesize serial, lastLEDMode, microphone;
     [appDefaults setObject:[NSNumber numberWithBool:NO] forKey:PREF_LIGHTS_STATE];
     [appDefaults setObject:@"" forKey:PREF_LED_MODE];
     [appDefaults setObject:[NSNumber numberWithFloat:50.0] forKey:PREF_BRIGHTNESS];
+    [appDefaults setObject:[NSNumber numberWithFloat:100.0] forKey:PREF_SENSITIVITY];
     [store registerDefaults:appDefaults];
     [store synchronize];
     NSString *savedPort = [store stringForKey:PREF_SERIAL_PORT];
     NSString *lastMode = [store stringForKey:PREF_LED_MODE];
     float brightness = [store floatForKey:PREF_BRIGHTNESS];
     NSData *lastColorData = [store dataForKey:PREF_COLOR];
+    float sensitivity = [store floatForKey:PREF_SENSITIVITY];
     NSColor *lastColor = nil;
     if (lastColorData != nil) {
         lastColor = (NSColor *)[NSUnarchiver unarchiveObjectWithData:lastColorData];
     }
     if ([inputDevices count] > 0) {
         [menuItemAudio setHidden:NO];
+        
+        // Prepare sensitivity menu
+        sensitivityItem.view = sensitivitySlider;
+        [sensitivitySlider setFloatValue:sensitivity];
+        [sensitivityLabel setTitle:[NSString stringWithFormat:@"Value: %.0f%%", sensitivity]];
+        [sensitivityMenu setHidden:NO];
+        [AudioVisualizer setSensitivity:sensitivity];
     }
 }
 
     [self setLightsColor:[sender color]];
 }
 
+- (IBAction)sensitivityMoved:(NSSlider *)sender {
+    [sensitivityLabel setTitle:[NSString stringWithFormat:@"Value: %.0f%%", [sender floatValue]]];
+    [AudioVisualizer setSensitivity:[sender floatValue]];
+    
+    // Store changed value in preferences
+    NSUserDefaults *store = [NSUserDefaults standardUserDefaults];
+    [store setObject:[NSNumber numberWithFloat:[sender floatValue]] forKey:PREF_SENSITIVITY];
+    [store synchronize];
+}
+
 - (IBAction)brightnessMoved:(NSSlider *)sender {
     [brightnessLabel setTitle:[NSString stringWithFormat:@"Value: %.0f%%", [sender floatValue]]];
     
         for (int  i = 0; i < [audioDevices count]; i++) {
             EZAudioDevice *dev = [audioDevices objectAtIndex:i];
             if ([[dev name] isEqualToString:[sender title]]) {
+                // Send command to turn off LEDs
+                [self setLightsR:0 G:0 B:0];
+                
                 // Found device
                 foundDev = YES;
                 if (microphone != nil) {

CaseLights/AudioVisualizer.h

 @interface AudioVisualizer : NSObject
 
 + (void)setDelegate:(AppDelegate *)delegate;
++ (void)setSensitivity:(float)sens;
 + (void)updateBuffer:(float *)buffer withBufferSize:(UInt32)bufferSize;
 
 @end

CaseLights/AudioVisualizer.m

 static AppDelegate *appDelegate = nil;
 static EZAudioFFT *fft = nil;
 static int maxBufferSize = 0;
+static float sensitivity = 1.0f;
 
 @implementation AudioVisualizer
 
     appDelegate = delegate;
 }
 
++ (void)setSensitivity:(float)sens {
+    sensitivity = sens / 100.0;
+}
+
 + (void)updateBuffer:(float *)buffer withBufferSize:(UInt32)bufferSize {
     // Create Fast Fourier Transformation object
     if (fft == nil) {
         fft = [EZAudioFFT fftWithMaximumBufferSize:maxBufferSize sampleRate:appDelegate.microphone.audioStreamBasicDescription.mSampleRate];
     }
     
+    // Scale input if required
+    if (sensitivity != 1.0f) {
+        for (int i = 0; i < bufferSize; i++) {
+            buffer[i] *= sensitivity;
+        }
+    }
+    
+    // Perform fast fourier transformation
     [fft computeFFTWithBuffer:buffer withBufferSize:bufferSize];
     
     static float history[FFT_BUCKET_COUNT][FFT_BUCKET_HISTORY];

CaseLights/Base.lproj/MainMenu.xib

                 <outlet property="menuItemDisplays" destination="1Cz-Xz-d16" id="rRz-n5-n2P"/>
                 <outlet property="menuPorts" destination="lFU-D0-M5p" id="pHd-AA-S3J"/>
                 <outlet property="menuVisualizations" destination="yZl-ae-7SI" id="b2b-dW-mvy"/>
+                <outlet property="sensitivityItem" destination="ioy-5y-tbs" id="huT-vf-Q9H"/>
+                <outlet property="sensitivityLabel" destination="luW-fv-Xlk" id="qbr-n1-q7M"/>
+                <outlet property="sensitivityMenu" destination="1Mp-yz-ggj" id="Xif-Mk-ff8"/>
+                <outlet property="sensitivitySlider" destination="0Vh-pa-Rae" id="4vd-WY-Jwv"/>
                 <outlet property="statusMenu" destination="g7M-LS-DgA" id="txO-T1-8yD"/>
             </connections>
         </customObject>
                     <modifierMask key="keyEquivalentModifierMask"/>
                     <menu key="submenu" title="Audio Inputs" id="KUj-jy-iwd"/>
                 </menuItem>
+                <menuItem title="Sensitivity" hidden="YES" id="1Mp-yz-ggj">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Sensitivity" id="yt8-Dk-EIy">
+                        <items>
+                            <menuItem title="Item" id="ioy-5y-tbs">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                            </menuItem>
+                            <menuItem title="Value: 50%" enabled="NO" id="luW-fv-Xlk">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                            </menuItem>
+                        </items>
+                    </menu>
+                </menuItem>
                 <menuItem title="Brightness" id="Oh0-1U-yDg">
                     <modifierMask key="keyEquivalentModifierMask"/>
                     <menu key="submenu" title="Brightness" id="jRu-sM-3xB">
             <connections>
                 <action selector="brightnessMoved:" target="Voe-Tx-rLC" id="Wxj-Xc-ZtT"/>
             </connections>
-            <point key="canvasLocation" x="370.5" y="496.5"/>
+            <point key="canvasLocation" x="122.5" y="326.5"/>
+        </slider>
+        <slider verticalHuggingPriority="750" id="0Vh-pa-Rae">
+            <rect key="frame" x="0.0" y="0.0" width="129" height="30"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+            <sliderCell key="cell" alignment="left" maxValue="200" doubleValue="100" tickMarkPosition="below" numberOfTickMarks="11" sliderType="linear" id="39W-Os-oE7"/>
+            <connections>
+                <action selector="sensitivityMoved:" target="Voe-Tx-rLC" id="4Vd-6i-qvd"/>
+            </connections>
+            <point key="canvasLocation" x="122.5" y="394.5"/>
         </slider>
     </objects>
 </document>

CaseLights/Info.plist

 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>391</string>
+	<string>397</string>
 	<key>LSApplicationCategoryType</key>
 	<string>public.app-category.utilities</string>
 	<key>LSMinimumSystemVersion</key>