iOS: Move off deprecated APIs

- Request an orientation update with setNeedsUpdateOfSupportedInterfaceOrientations
  on iOS 16+, where attemptRotationToDeviceOrientation is deprecated.
- Open the document picker with UTTypes on iOS 14+, and present it from
  sharedViewController rather than through the deprecated keyWindow.
- List cameras with a discovery session instead of devicesWithMediaType.
- IS_IPAD() instead of UI_USER_INTERFACE_IDIOM().

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

CMakeLists.txt

@@ -968,6 +968,8 @@ elseif(IOS AND NOT LIBRETRO)
 	if(EXISTS "${CMAKE_IOS_SDK_ROOT}/System/Library/Frameworks/PhotosUI.framework")
 		list(APPEND targetExtraLibs "-weak_framework PhotosUI")
 	endif()
+	# Weak, since it's iOS 14+ and we still run on 13.
+	list(APPEND targetExtraLibs "-weak_framework UniformTypeIdentifiers")
 	if(USE_IAP)
 		# Adding the In-App Purchase capability in Xcode did this. There's no entitlement for it on iOS.
 		list(APPEND targetExtraLibs "-framework StoreKit")

Core/Util/DarwinFileSystemServices.mm

@@ -32,6 +32,7 @@
 #if __has_include(<UIKit/UIKit.h>)
 #include "../ios/ViewControllerCommon.h"
 #include <UIKit/UIKit.h>
+#include <UniformTypeIdentifiers/UniformTypeIdentifiers.h>
 
 @interface DocumentPickerDelegate : NSObject <UIDocumentPickerDelegate>
 @property DarwinDirectoryPanelCallback panelCallback;
@@ -279,27 +280,28 @@ void DarwinFileSystemServices::presentDirectoryPanel(
 			panelCallback(false, Path());
 		}
 #elif PPSSPP_PLATFORM(IOS)
-		UIViewController *rootViewController = UIApplication.sharedApplication
-			.keyWindow
-			.rootViewController;
-
-		// get current window view controller
+		// The window's root view controller.
+		UIViewController *rootViewController = sharedViewController;
 		if (!rootViewController)
 			return;
 
-		NSMutableArray<NSString *> *types = [NSMutableArray array];
-		UIDocumentPickerMode pickerMode = UIDocumentPickerModeOpen;
-
-		if (allowDirectories)
-			[types addObject: (__bridge NSString *)kUTTypeFolder];
-		if (allowFiles) {
-			[types addObject: (__bridge NSString *)kUTTypeItem];
-			// NOTE: We do not want to copy files here - we handle it ourselves if needed.
-			// Previously this was Import mode.
-			pickerMode = UIDocumentPickerModeOpen;
+		// Open, not import - we don't want the files copied, we handle that ourselves if needed.
+		UIDocumentPickerViewController *pickerVC;
+		if (@available(iOS 14.0, *)) {
+			NSMutableArray<UTType *> *types = [NSMutableArray array];
+			if (allowDirectories)
+				[types addObject:UTTypeFolder];
+			if (allowFiles)
+				[types addObject:UTTypeItem];
+			pickerVC = [[UIDocumentPickerViewController alloc] initForOpeningContentTypes:types];
+		} else {
+			NSMutableArray<NSString *> *types = [NSMutableArray array];
+			if (allowDirectories)
+				[types addObject:(__bridge NSString *)kUTTypeFolder];
+			if (allowFiles)
+				[types addObject:(__bridge NSString *)kUTTypeItem];
+			pickerVC = [[UIDocumentPickerViewController alloc] initWithDocumentTypes:types inMode:UIDocumentPickerModeOpen];
 		}
-
-		UIDocumentPickerViewController *pickerVC = [[UIDocumentPickerViewController alloc] initWithDocumentTypes: types inMode: pickerMode];
 		// What if you wanted to go to heaven, but then God showed you the next few lines?
 		// serious note: have to do this, because __pickerDelegate has to stay retained as a class property
 		__pickerDelegate = (void *)CFBridgingRetain([[DocumentPickerDelegate alloc] initWithCallback:panelCallback]);

ios/AppDelegate.mm

@@ -234,7 +234,7 @@ static std::vector<std::string> GatherGameLibrary() {
 		return UIInterfaceOrientationMaskLandscapeRight;
 	case ROTATION_LOCKED_VERTICAL:
 	case ROTATION_LOCKED_VERTICAL180:
-		if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
+		if (IS_IPAD()) {
 			// iPad supports both portrait orientations, so allow them.
 			return UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskPortraitUpsideDown;
 		}

ios/CameraHelper.mm

@@ -14,9 +14,21 @@
 
 @implementation CameraHelper
 
+static NSArray<AVCaptureDevice *> *GetVideoDevices() {
+    NSArray<AVCaptureDeviceType> *types = @[
+        AVCaptureDeviceTypeBuiltInWideAngleCamera,
+        AVCaptureDeviceTypeBuiltInUltraWideCamera,
+        AVCaptureDeviceTypeBuiltInTelephotoCamera,
+        AVCaptureDeviceTypeBuiltInTrueDepthCamera,
+    ];
+    return [AVCaptureDeviceDiscoverySession discoverySessionWithDeviceTypes:types
+                                                                  mediaType:AVMediaTypeVideo
+                                                                   position:AVCaptureDevicePositionUnspecified].devices;
+}
+
 std::vector<std::string> System_GetCameraDeviceList() {
     std::vector<std::string> deviceList;
-    for (AVCaptureDevice *device in [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo]) {
+    for (AVCaptureDevice *device in GetVideoDevices()) {
         deviceList.push_back([device.localizedName UTF8String]);
     }
     return deviceList;
@@ -76,7 +88,7 @@ NSString *getSelectedCamera() {
 
         AVCaptureDeviceInput *videoInput = nil;
         NSString *selectedCamera = getSelectedCamera();
-        for (AVCaptureDevice *device in [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo]) {
+        for (AVCaptureDevice *device in GetVideoDevices()) {
             if ([device.localizedName isEqualToString:selectedCamera]) {
                 videoInput = [AVCaptureDeviceInput deviceInputWithDevice:device error:&error];
             }

ios/main.mm

@@ -452,11 +452,14 @@ void System_Notify(SystemNotification notification) {
 		});
 		break;
 	case SystemNotification::ROTATE_UPDATED:
-	    dispatch_async(dispatch_get_main_queue(), ^{
+		dispatch_async(dispatch_get_main_queue(), ^{
 			if (sharedViewController) {
-				// [sharedViewController setNeedsUpdateOfSupportedInterfaceOrientations];
 				INFO_LOG(Log::System, "Requesting device orientation update");
-				[UIViewController attemptRotationToDeviceOrientation];
+				if (@available(iOS 16.0, *)) {
+					[sharedViewController setNeedsUpdateOfSupportedInterfaceOrientations];
+				} else {
+					[UIViewController attemptRotationToDeviceOrientation];
+				}
 			}
 		});
 		break;