VLCMovieViewController: Fix brightness filter slider

This removes the confusion between screen brightness and video
filter brightness. Hence, it fixes the position of the brightness silder
position on a start of a media.
Signed-off-by: Carola Nitz <nitz.carola@googlemail.com>

Resources/VLCMovieViewController~iphone.xib

 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="13770" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" colorMatched="YES">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="13771" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" colorMatched="YES">
     <device id="retina4_7" orientation="portrait">
         <adaptation id="fullscreen"/>
     </device>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13770"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13772"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <objects>
@@ -149,7 +149,7 @@
                     <rect key="frame" x="0.0" y="342" width="320" height="198"/>
                     <autoresizingMask key="autoresizingMask" flexibleMinX="YES" flexibleMaxX="YES" flexibleMinY="YES"/>
                     <subviews>
-                        <slider opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" minValue="0.0" maxValue="2" id="128" customClass="VLCSlider">
+                        <slider opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" value="1" minValue="0.0" maxValue="2" id="128" customClass="VLCSlider">
                             <rect key="frame" x="18" y="19" width="284" height="29"/>
                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
                             <connections>

Sources/VLCMovieViewController.m

@@ -184,8 +184,6 @@ typedef NS_ENUM(NSInteger, VLCPanType) {
                    name:UIScreenDidConnectNotification object:nil];
     [center addObserver:self selector:@selector(handleExternalScreenDidDisconnect:)
                    name:UIScreenDidDisconnectNotification object:nil];
-    [center addObserver:self selector:@selector(screenBrightnessChanged:)
-                   name:UIScreenBrightnessDidChangeNotification object:nil];
     [center addObserver:self
                selector:@selector(appBecameActive:)
                    name:UIApplicationDidBecomeActiveNotification
@@ -405,7 +403,6 @@ typedef NS_ENUM(NSInteger, VLCPanType) {
     self.artistNameLabel.text = nil;
     self.albumNameLabel.text = nil;
 
-    [self screenBrightnessChanged:nil];
     [self setControlsHidden:NO animated:animated];
 
     [self updateDefaults];
@@ -946,8 +943,6 @@ typedef NS_ENUM(NSInteger, VLCPanType) {
     self.timeNavigationTitleView.positionSlider.value = 0.;
     [self.timeNavigationTitleView.timeDisplayButton setTitle:@"" forState:UIControlStateNormal];
     self.timeNavigationTitleView.timeDisplayButton.accessibilityLabel = @"";
-    if (![[UIDevice currentDevice] VLCHasExternalDisplay])
-        self.brightnessSlider.value = [UIScreen mainScreen].brightness * 2.;
     [_equalizerView reloadData];
 
     double playbackRate = controller.playbackRate;
@@ -1492,15 +1487,14 @@ currentMediaHasTrackToChooseFrom:(BOOL)currentMediaHasTrackToChooseFrom
 {
     if (sender == self.hueSlider)
         _vpc.hue = self.hueSlider.value;
-    if (sender == self.contrastSlider)
+    else if (sender == self.contrastSlider)
         _vpc.contrast = self.contrastSlider.value;
-    if (sender == self.brightnessSlider)
+    else if (sender == self.brightnessSlider)
         _vpc.brightness = self.brightnessSlider.value;
-    if (sender == self.saturationSlider)
+    else if (sender == self.saturationSlider)
         _vpc.saturation = self.saturationSlider.value;
-    if (sender == self.gammaSlider)
+    else if (sender == self.gammaSlider)
         _vpc.gamma = self.gammaSlider.value;
-
     else if (sender == self.resetVideoFilterButton) {
         self.hueSlider.value = 0.;
         self.contrastSlider.value = 1.;
@@ -1513,14 +1507,6 @@ currentMediaHasTrackToChooseFrom:(BOOL)currentMediaHasTrackToChooseFrom
     [self _resetIdleTimer];
 }
 
-- (void)screenBrightnessChanged:(NSNotification *)notification
-{
-    if (notification)
-        self.brightnessSlider.value = [(UIScreen *)notification.object brightness] * 2.;
-    else if (![[UIDevice currentDevice] VLCHasExternalDisplay])
-        self.brightnessSlider.value = [(UIScreen *)[[UIScreen screens] firstObject] brightness] * 2.;
-}
-
 - (void)appBecameActive:(NSNotification *)aNotification
 {
     VLCPlayerDisplayController *pdc = [VLCPlayerDisplayController sharedInstance];

Sources/VLCPlaybackController.m

@@ -530,20 +530,12 @@ typedef NS_ENUM(NSUInteger, VLCAspectRatio) {
 {
     return _mediaPlayer.brightness;
 }
-#if TARGET_OS_IOS
-- (void)setBrightness:(float)brightness
-{
-    if (![[UIDevice currentDevice] VLCHasExternalDisplay])
-        _mediaPlayer.brightness = brightness;
-    else
-        [[UIScreen mainScreen] setBrightness:(brightness / 2.)];
-}
-#else
+
 - (void)setBrightness:(float)brightness
 {
     _mediaPlayer.brightness = brightness;
 }
-#endif
+
 - (float)saturation
 {
     return _mediaPlayer.saturation;
@@ -569,7 +561,6 @@ typedef NS_ENUM(NSUInteger, VLCAspectRatio) {
     _mediaPlayer.hue = 0.;
     _mediaPlayer.contrast = 1.;
     _mediaPlayer.brightness = 1.;
-    [self setBrightness:1.];
     _mediaPlayer.saturation = 1.;
     _mediaPlayer.gamma = 1.;
 }