Set preferred camera postition for CardIOPaymentViewController.

Author: dmytrokhl

CardIO_Public_API/CardIOPaymentViewController.h

@@ -6,11 +6,14 @@
 #import <UIKit/UIKit.h>
 #import "CardIOPaymentViewControllerDelegate.h"
 #import "CardIODetectionMode.h"
+#import <AVFoundation/AVCaptureDevice.h>
 
 /// CardIOPaymentViewController is one of two main entry points into the card.io SDK.
 /// @see CardIOView
 @interface CardIOPaymentViewController : UINavigationController
 
+- (id)initWithPaymentDelegate:(id<CardIOPaymentViewControllerDelegate>)aDelegate scanningEnabled:(BOOL)scanningEnabled preferredDevicePosition:(AVCaptureDevicePosition)preferredDevicePosition;
+
 /// Initializer for scanning.
 /// If scanning is not supported by the user's device, card.io will offer manual entry.
 /// @param aDelegate Your CardIOPaymentViewControllerDelegate (typically a UIViewController).

CardIO_Public_API/CardIOView.h

@@ -6,6 +6,7 @@
 #import <UIKit/UIKit.h>
 #import "CardIOViewDelegate.h"
 #import "CardIODetectionMode.h"
+#import <AVFoundation/AVCaptureDevice.h>
 
 /// CardIOView is one of two main entry points into the card.io SDK.
 /// @see CardIOPaymentViewController
@@ -20,6 +21,8 @@
 
 #pragma mark - Properties you MAY set
 
+@property(nonatomic, assign, readwrite) AVCaptureDevicePosition preferredDevicePosition;
+
 /// The preferred language for all strings appearing in the user interface.
 /// If not set, or if set to nil, defaults to the device's current language setting.
 ///

Classes/CardIOCameraView.mm

@@ -84,7 +84,7 @@ - (id)initWithFrame:(CGRect)frame delegate:(id<CardIOVideoStreamDelegate>)delega
     _delegate = delegate;
     _config = config;
 
-    _videoStream = [[CardIOVideoStream alloc] init];
+    _videoStream = [[CardIOVideoStream alloc] initWithCameraPosition:config.preferredDevicePosition];
     self.videoStream.config = config;
     self.videoStream.delegate = self;
     self.videoStream.previewLayer.needsDisplayOnBoundsChange = YES;
@@ -566,4 +566,4 @@ - (void)setInstructionsFont:(UIFont *)instructionsFont {
 
 @end
 
-#endif
+#endif

Classes/CardIOConfig.h

@@ -6,6 +6,7 @@
 #import <Foundation/Foundation.h>
 #import "CardIOAnalytics.h"
 #import "CardIODetectionMode.h"
+#import <AVFoundation/AVCaptureDevice.h>
 
 @interface CardIOConfig : NSObject
 @property(nonatomic, strong, readwrite) CardIOAnalytics *scanReport;
@@ -19,6 +20,7 @@
 @property(nonatomic, copy, readwrite)   NSString *scanInstructions;
 @property(nonatomic, assign, readwrite) BOOL hideCardIOLogo;
 @property(nonatomic, retain, readwrite) UIView *scanOverlayView;
+@property(nonatomic, assign, readwrite) AVCaptureDevicePosition preferredDevicePosition;
 
 @property(nonatomic, assign, readwrite) CardIODetectionMode detectionMode;
 @end

Classes/CardIOPaymentViewController.m

@@ -47,6 +47,11 @@ - (id)initWithPaymentDelegate:(id<CardIOPaymentViewControllerDelegate>)aDelegate
   return [self initWithPaymentDelegate:aDelegate scanningEnabled:YES];
 }
 
+- (id)initWithPaymentDelegate:(id<CardIOPaymentViewControllerDelegate>)aDelegate scanningEnabled:(BOOL)scanningEnabled preferredDevicePosition:(AVCaptureDevicePosition)preferredDevicePosition {
+    _preferredDevicePosition = preferredDevicePosition;
+  return [self initWithPaymentDelegate:aDelegate scanningEnabled:scanningEnabled];
+}
+
 - (id)initWithPaymentDelegate:(id<CardIOPaymentViewControllerDelegate>)aDelegate scanningEnabled:(BOOL)scanningEnabled {
 #if CARDIO_DEBUG
   static dispatch_once_t onceToken;
@@ -82,6 +87,7 @@ - (id)initWithPaymentDelegate:(id<CardIOPaymentViewControllerDelegate>)aDelegate
 #if USE_CAMERA || SIMULATE_CAMERA
     if(!self.currentViewControllerIsDataEntry) {
       CardIOViewController *cameraVC = (CardIOViewController *)viewController;
+      cameraVC.preferredDevicePosition = self.preferredDevicePosition;
       cameraVC.context = self.context;
     }
 #endif

Classes/CardIOPaymentViewControllerContinuation.h

@@ -4,6 +4,7 @@
 //
 
 #import "CardIOPaymentViewController.h"
+#import <AVFoundation/AVCaptureDevice.h>
 
 @class CardIOAnalytics;
 @class CardIOContext;
@@ -22,6 +23,7 @@
 @property(nonatomic, assign, readwrite) BOOL statusBarWasOriginallyHidden;
 
 @property(nonatomic, strong, readwrite) CardIOContext *context;
+@property(nonatomic, assign, readwrite) AVCaptureDevicePosition preferredDevicePosition;
 
 @property(nonatomic, strong, readwrite) UIImageView *obfuscatingView;
 

Classes/CardIOVideoStream.h

@@ -23,6 +23,8 @@
   dmz_context *dmz;
 #endif
 }
+
+- (id)initWithCameraPosition:(AVCaptureDevicePosition )cameraPosition;
 - (void)willAppear;
 - (void)willDisappear;
 

Classes/CardIOVideoStream.mm

@@ -179,14 +179,39 @@ @interface CardIOVideoStream ()
 
 @implementation CardIOVideoStream
 
+- (AVCaptureDevice *)cameraWithPosition: (AVCaptureDevicePosition)position {
+    return [AVCaptureDeviceDiscoverySession discoverySessionWithDeviceTypes:@[ AVCaptureDeviceTypeBuiltInWideAngleCamera ]
+                                                                  mediaType:AVMediaTypeVideo
+                                                                   position:position].devices.firstObject;
+}
+
 - (id)init {
   if((self = [super init])) {
     _interfaceOrientation = (UIInterfaceOrientation)UIDeviceOrientationUnknown;
     _scanner = [[CardIOCardScanner alloc] init];
     _cameraConfigurationSemaphore = dispatch_semaphore_create(1); // parameter of `1` implies "allow access to only one thread at a time"
 #if USE_CAMERA
     _captureSession = [[AVCaptureSession alloc] init];
-    _camera = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
+    _camera = [self cameraWithPosition: AVCaptureDevicePositionUnspecified];
+    _previewLayer = [AVCaptureVideoPreviewLayer layerWithSession:self.captureSession];
+    dmz = dmz_context_create();
+#elif SIMULATE_CAMERA
+    _previewLayer = [SimulatedCameraLayer layer];
+#endif
+  }
+  return self;
+}
+
+
+- (id)initWithCameraPosition:(AVCaptureDevicePosition )cameraPosition {
+  if((self = [super init])) {
+    
+    _interfaceOrientation = (UIInterfaceOrientation)UIDeviceOrientationUnknown;
+    _scanner = [[CardIOCardScanner alloc] init];
+    _cameraConfigurationSemaphore = dispatch_semaphore_create(1); // parameter of `1` implies "allow access to only one thread at a time"
+#if USE_CAMERA
+    _captureSession = [[AVCaptureSession alloc] init];
+    _camera = [self cameraWithPosition: cameraPosition];
     _previewLayer = [AVCaptureVideoPreviewLayer layerWithSession:self.captureSession];
     dmz = dmz_context_create();
 #elif SIMULATE_CAMERA

Classes/CardIOView.mm

@@ -148,6 +148,7 @@ - (void)implicitStart {
       return;
     }
 
+    self.config.preferredDevicePosition = _preferredDevicePosition;
     self.scanHasBeenStarted = YES;
 
     CardIOLog(@"Creating cameraView");
@@ -354,4 +355,4 @@ @implementation CardIOView
 
 @end
 
-#endif  // USE_CAMERA || SIMULATE_CAMERA
+#endif  // USE_CAMERA || SIMULATE_CAMERA

Classes/CardIOViewController.h

@@ -8,6 +8,7 @@
 #import <UIKit/UIKit.h>
 
 #import <AudioToolbox/AudioServices.h>
+#import <AVFoundation/AVCaptureDevice.h>
 
 @class CardIOContext;
 
@@ -16,6 +17,7 @@
 - (id)init;
 
 @property(nonatomic, strong, readwrite) CardIOContext *context;
+@property(nonatomic, assign, readwrite) AVCaptureDevicePosition preferredDevicePosition;
 
 @end