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Merge pull request #642 from logicalmoody/master
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@LIJI32
LIJI32 committed Jun 28, 2024
2 parents d07b199 + d42aad2 commit 8db2490
Showing 1 changed file with 114 additions and 10 deletions.
124 changes: 114 additions & 10 deletions iOS/GBViewController.m
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Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,10 @@ @implementation GBViewController
NSTimer *_disableCameraTimer;
AVCaptureDevicePosition _cameraPosition;
UIButton *_cameraPositionButton;
UIButton *_changeCameraButton;
NSArray *_allCaptureDevices;
NSArray *_backCaptureDevices;
AVCaptureDevice *_selectedBackCaptureDevice;

__weak GCController *_lastController;

Expand Down Expand Up @@ -241,8 +245,36 @@ - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(

_motionManager = [[CMMotionManager alloc] init];
_cameraPosition = AVCaptureDevicePositionBack;
_cameraPositionButton = [[UIButton alloc] initWithFrame:CGRectMake(8,
0,
_selectedBackCaptureDevice = [AVCaptureDevice defaultDeviceWithMediaType: AVMediaTypeVideo];

// Back camera setup
NSArray *deviceTypes = @[AVCaptureDeviceTypeBuiltInWideAngleCamera,
AVCaptureDeviceTypeBuiltInTelephotoCamera];
if (@available(iOS 13.0, *)) {
// AVCaptureDeviceTypeBuiltInUltraWideCamera is only available in iOS 13+
deviceTypes = @[AVCaptureDeviceTypeBuiltInWideAngleCamera,
AVCaptureDeviceTypeBuiltInUltraWideCamera,
AVCaptureDeviceTypeBuiltInTelephotoCamera];
}

// Use a discovery session to gather the capture devices (all back cameras as well as the front camera)
AVCaptureDeviceDiscoverySession *cameraDiscoverySession = [AVCaptureDeviceDiscoverySession discoverySessionWithDeviceTypes:deviceTypes
mediaType:AVMediaTypeVideo
position:AVCaptureDevicePositionUnspecified];
_allCaptureDevices = cameraDiscoverySession.devices;

// Filter only the back cameras into a list used for switching between them
NSMutableArray *filteredBackCameras = [NSMutableArray array];
for (AVCaptureDevice *device in _allCaptureDevices) {
if ([device position] == AVCaptureDevicePositionBack) {
[filteredBackCameras addObject:device];
}
}
_backCaptureDevices = filteredBackCameras;

UIEdgeInsets insets = self.window.safeAreaInsets;
_cameraPositionButton = [[UIButton alloc] initWithFrame:CGRectMake(insets.left + 8,
_backgroundView.bounds.size.height - 8 - insets.bottom - 32,
32,
32)];
[self didRotateFromInterfaceOrientation:[UIApplication sharedApplication].statusBarOrientation];
Expand All @@ -251,20 +283,41 @@ - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(
withConfiguration:[UIImageSymbolConfiguration configurationWithScale:UIImageSymbolScaleLarge]]
forState:UIControlStateNormal];
_cameraPositionButton.backgroundColor = [UIColor systemBackgroundColor];

// Configure the change camera button stacked on top of the camera position button
_changeCameraButton = [[UIButton alloc] initWithFrame:CGRectMake(insets.left + 8,
_backgroundView.bounds.size.height - 8 - insets.bottom - 32 - 32 - 8,
32,
32)];
[_changeCameraButton setImage:[UIImage systemImageNamed:@"camera.aperture"
withConfiguration:[UIImageSymbolConfiguration configurationWithScale:UIImageSymbolScaleLarge]]
forState:UIControlStateNormal];
_changeCameraButton.backgroundColor = [UIColor systemBackgroundColor];
_changeCameraButton.layer.cornerRadius = 6;
_changeCameraButton.alpha = 0;
[_changeCameraButton addTarget:self
action:@selector(changeCamera)
forControlEvents:UIControlEventTouchUpInside];
// Only show the change camera button if we have more than one back camera to swap between.
if ([_backCaptureDevices count] > 1) {
[_backgroundView addSubview:_changeCameraButton];
}
}
else {
UIImage *image = [[UIImage imageNamed:@"CameraRotateTemplate"] imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
[_cameraPositionButton setImage:image
forState:UIControlStateNormal];
UIImage *rotateImage = [[UIImage imageNamed:@"CameraRotateTemplate"] imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
[_cameraPositionButton setImage:rotateImage
forState:UIControlStateNormal];
_cameraPositionButton.backgroundColor = [UIColor whiteColor];
}

_cameraPositionButton.layer.cornerRadius = 6;
_cameraPositionButton.alpha = 0;
[_cameraPositionButton addTarget:self
action:@selector(rotateCamera)
forControlEvents:UIControlEventTouchUpInside];

[_backgroundView addSubview:_cameraPositionButton];

_cameraQueue = dispatch_queue_create("SameBoy Camera Queue", NULL);

[UNUserNotificationCenter currentNotificationCenter].delegate = self;
Expand Down Expand Up @@ -685,7 +738,16 @@ - (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)orientation dur
- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
UIEdgeInsets insets = self.window.safeAreaInsets;
_cameraPositionButton.frame = CGRectMake(insets.left + 8, _backgroundView.bounds.size.height - 8 - insets.bottom - 32, 32, 32);
_cameraPositionButton.frame = CGRectMake(insets.left + 8,
_backgroundView.bounds.size.height - 8 - insets.bottom - 32,
32,
32);
if (_changeCameraButton) {
_changeCameraButton.frame = CGRectMake(insets.left + 8,
_backgroundView.bounds.size.height - 8 - insets.bottom - 32 - 32 - 8,
32,
32);
}
}

- (UIInterfaceOrientationMask)supportedInterfaceOrientations
Expand Down Expand Up @@ -1123,12 +1185,20 @@ - (void)setRunMode:(GBRunMode)runMode

- (AVCaptureDevice *)captureDevice
{
NSArray *devices = [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo];
for (AVCaptureDevice *device in devices) {
for (AVCaptureDevice *device in _allCaptureDevices) {
if ([device position] == _cameraPosition) {
return device;
// There is only one front camera, return it
if (_cameraPosition == AVCaptureDevicePositionFront) {
return device;
}

// There may be several back cameras, return the one with the matching type
if ([device deviceType] == [_selectedBackCaptureDevice deviceType]) {
return device;
}
}
}
// Return the default camera
return [AVCaptureDevice defaultDeviceWithMediaType: AVMediaTypeVideo];
}

Expand Down Expand Up @@ -1179,6 +1249,16 @@ - (void)cameraRequestUpdate
_cameraPositionButton.alpha = 1;
}];
}
if (_changeCameraButton) {
// The change camera button is only available when we are using a capture device on the back of the device
double changeCameraButtonAlpha = (_cameraPosition == AVCaptureDevicePositionFront) ? 0 : 1;
if (changeCameraButtonAlpha != _changeCameraButton.alpha) {
[UIView animateWithDuration:0.25 animations:^{
_changeCameraButton.alpha = changeCameraButtonAlpha;
}];
}
}

_disableCameraTimer = [NSTimer scheduledTimerWithTimeInterval:1
repeats:false
block:^(NSTimer *timer) {
Expand All @@ -1187,6 +1267,11 @@ - (void)cameraRequestUpdate
_cameraPositionButton.alpha = 0;
}];
}
if (_changeCameraButton.alpha) {
[UIView animateWithDuration:0.25 animations:^{
_changeCameraButton.alpha = 0;
}];
}
dispatch_async(_cameraQueue, ^{
[_cameraSession stopRunning];
_cameraSession = nil;
Expand Down Expand Up @@ -1292,4 +1377,23 @@ - (void)rotateCamera
});
}

- (void)changeCamera
{
dispatch_async(_cameraQueue, ^{
// Get index of selected camera and select the next one, wrapping to the beginning
NSUInteger i = [_backCaptureDevices indexOfObject:_selectedBackCaptureDevice];
int nextIndex = (i + 1) % _backCaptureDevices.count;
_selectedBackCaptureDevice = _backCaptureDevices[nextIndex];

[_cameraSession stopRunning];
_cameraSession = nil;
_cameraConnection = nil;
_cameraOutput = nil;
if (_cameraNeedsUpdate) {
_cameraNeedsUpdate = false;
GB_camera_updated(&_gb);
}
});
}

@end

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