Changed camera selection method so you can choose which camera to use

jj0b · Mar 1, 2012 · 3199d58 · 3199d58
1 parent 6f0b55d
commit 3199d58
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Showing 5 changed files with 52 additions and 21 deletions.
diff --git a/...xcodeproj/project.xcworkspace/xcuserdata/Jason.xcuserdatad/UserInterfaceState.xcuserstate b/...xcodeproj/project.xcworkspace/xcuserdata/Jason.xcuserdatad/UserInterfaceState.xcuserstate
diff --git a/AROverlayExample.xcodeproj/xcuserdata/Jason.xcuserdatad/xcdebugger/Breakpoints.xcbkptlist b/AROverlayExample.xcodeproj/xcuserdata/Jason.xcuserdatad/xcdebugger/Breakpoints.xcbkptlist
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Bucket
+   type = "1"
+   version = "1.0">
+</Bucket>
diff --git a/AROverlayExample/Classes/AROverlayViewController.m b/AROverlayExample/Classes/AROverlayViewController.m
@@ -13,15 +13,14 @@ - (void)viewDidLoad {
 
 	[self setCaptureManager:[[[CaptureSessionManager alloc] init] autorelease]];
 
-	[[self captureManager] addVideoInput];
+	[[self captureManager] addVideoInputFrontCamera:YES]; // set to YES for Front Camera, No for Back camera
 
   [[self captureManager] addStillImageOutput];
 
 	[[self captureManager] addVideoPreviewLayer];
 	CGRect layerRect = [[[self view] layer] bounds];
-	[[[self captureManager] previewLayer] setBounds:layerRect];
-	[[[self captureManager] previewLayer] setPosition:CGPointMake(CGRectGetMidX(layerRect),
-                                                                CGRectGetMidY(layerRect))];
+    [[[self captureManager] previewLayer] setBounds:layerRect];
+    [[[self captureManager] previewLayer] setPosition:CGPointMake(CGRectGetMidX(layerRect),CGRectGetMidY(layerRect))];
 	[[[self view] layer] addSublayer:[[self captureManager] previewLayer]];
 
   UIImageView *overlayImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"overlaygraphic.png"]];

diff --git a/AROverlayExample/Classes/CaptureSessionManager.h b/AROverlayExample/Classes/CaptureSessionManager.h
@@ -12,8 +12,8 @@
 @property (nonatomic, retain) UIImage *stillImage;
 
 - (void)addVideoPreviewLayer;
-- (void)addVideoInput;
 - (void)addStillImageOutput;
 - (void)captureStillImage;
+- (void)addVideoInputFrontCamera:(BOOL)front;
 
 @end
diff --git a/AROverlayExample/Classes/CaptureSessionManager.m b/AROverlayExample/Classes/CaptureSessionManager.m
@@ -23,22 +23,49 @@ - (void)addVideoPreviewLayer {
 
 }
 
-- (void)addVideoInput {
-	AVCaptureDevice *videoDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];	
-	if (videoDevice) {
-		NSError *error;
-		AVCaptureDeviceInput *videoIn = [AVCaptureDeviceInput deviceInputWithDevice:videoDevice error:&error];
-		if (!error) {
-			if ([[self captureSession] canAddInput:videoIn])
-				[[self captureSession] addInput:videoIn];
-			else
-				NSLog(@"Couldn't add video input");		
-		}
-		else
-			NSLog(@"Couldn't create video input");
-	}
-	else
-		NSLog(@"Couldn't create video capture device");
+- (void)addVideoInputFrontCamera:(BOOL)front {
+    NSArray *devices = [AVCaptureDevice devices];
+    AVCaptureDevice *frontCamera;
+    AVCaptureDevice *backCamera;
+
+    for (AVCaptureDevice *device in devices) {
+
+        NSLog(@"Device name: %@", [device localizedName]);
+
+        if ([device hasMediaType:AVMediaTypeVideo]) {
+
+            if ([device position] == AVCaptureDevicePositionBack) {
+                NSLog(@"Device position : back");
+                backCamera = device;
+            }
+            else {
+                NSLog(@"Device position : front");
+                frontCamera = device;
+            }
+        }
+    }
+
+    NSError *error = nil;
+
+    if (front) {
+        AVCaptureDeviceInput *frontFacingCameraDeviceInput = [AVCaptureDeviceInput deviceInputWithDevice:frontCamera error:&error];
+        if (!error) {
+            if ([[self captureSession] canAddInput:frontFacingCameraDeviceInput]) {
+                [[self captureSession] addInput:frontFacingCameraDeviceInput];
+            } else {
+                NSLog(@"Couldn't add front facing video input");
+            }
+        }
+    } else {
+        AVCaptureDeviceInput *backFacingCameraDeviceInput = [AVCaptureDeviceInput deviceInputWithDevice:backCamera error:&error];
+        if (!error) {
+            if ([[self captureSession] canAddInput:backFacingCameraDeviceInput]) {
+                [[self captureSession] addInput:backFacingCameraDeviceInput];
+            } else {
+                NSLog(@"Couldn't add back facing video input");
+            }
+        }
+    }
 }
 
 - (void)addStillImageOutput