From b3547de4a251bb03a47974dc34e93e1b17965445 Mon Sep 17 00:00:00 2001
From: shabake <45329453@qq.com>
Date: Wed, 10 Apr 2019 16:18:01 +0800
Subject: [PATCH] updata code

---
 GHCameraModule/GHCameraModule.m         | 44 +++++++++++++++++++++----
 GHCustom/GHCameraModuleViewController.m |  2 +-
 2 files changed, 38 insertions(+), 8 deletions(-)

diff --git a/GHCameraModule/GHCameraModule.m b/GHCameraModule/GHCameraModule.m
index 88f4c21..a02e6a8 100644
--- a/GHCameraModule/GHCameraModule.m
+++ b/GHCameraModule/GHCameraModule.m
@@ -30,6 +30,7 @@ @interface GHCameraModule()<AVCaptureVideoDataOutputSampleBufferDelegate,AVCaptu
 
 @property (nonatomic , copy) CameraModuleBlock cameraModuleBlock;
 @property (nonatomic , copy) CameraModuleCodeBlock cameraModuleCodeBlock;
+@property (nonatomic , copy) NSString *string;
 
 #define weakself(self)  __weak __typeof(self) weakSelf = self
 
@@ -121,23 +122,52 @@ - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:
     if (metadataObjects.count > 0) {
    
         AVMetadataMachineReadableCodeObject *metadataObject = [metadataObjects objectAtIndex :0];
+        NSString *string = metadataObject.stringValue;
+        self.string = string;
+        NSArray *array = metadataObject.corners;
+        NSLog(@"array%@",array);
+        CGPoint point = CGPointZero;
+        int index = 0;
+        CFDictionaryRef dict = (__bridge CFDictionaryRef)(array[index++]);
+        CGPointMakeWithDictionaryRepresentation(dict, &point);
+        CGPoint point2 = CGPointZero;
+        CGPointMakeWithDictionaryRepresentation((__bridge CFDictionaryRef)array[2], &point2);
+        CGFloat scace = 100 /(point2.x-point.x);
+        NSLog(@"scacescacescace%f",scace);
+        [self setVideoScale:scace];
+    }
+}
+
+- (void)setVideoScale:(CGFloat)scale{
+    
+    [self.input.device lockForConfiguration:nil];
+    //获取放大最大倍数
+    AVCaptureConnection *videoConnection = [self.stillImageOutput connectionWithMediaType:AVMediaTypeVideo];
+    CGFloat maxScaleAndCropFactor = ([[self.stillImageOutput connectionWithMediaType:AVMediaTypeVideo] videoMaxScaleAndCropFactor])/16;
+    
+    scale = 1.4;
     
+    videoConnection.videoScaleAndCropFactor = scale;
+    [CATransaction begin];
+    [CATransaction setAnimationDuration:0.25];
+    [self.previewLayer setAffineTransform:CGAffineTransformMakeScale(scale, scale)];
+    videoConnection.videoScaleAndCropFactor = scale;
+    [CATransaction commit];
+    [CATransaction setCompletionBlock:^{
         [self.session stopRunning];
+        [self.input.device unlockForConfiguration];
 
-        NSString *string = metadataObject.stringValue;
-        if (string.length) {
-            NSString *resultString = metadataObject.stringValue;
+        if (self.string.length) {
             
             if (self.cameraModuleCodeBlock) {
-                self.cameraModuleCodeBlock(resultString);
+                self.cameraModuleCodeBlock(self.string);
             }
             if (self.delegate && [self.delegate respondsToSelector:@selector(cameraModule:info:resultString:)]) {
-                [self.delegate cameraModule:self info:nil resultString:resultString];
+                [self.delegate cameraModule:self info:nil resultString:self.string];
             }
         }
-    }
+    }];
 }
-
 - (void)screenshot {
     AVCaptureConnection * videoConnection = [self.stillImageOutput connectionWithMediaType:AVMediaTypeVideo];
     if (!videoConnection) {
diff --git a/GHCustom/GHCameraModuleViewController.m b/GHCustom/GHCameraModuleViewController.m
index 8317a86..0221e63 100644
--- a/GHCustom/GHCameraModuleViewController.m
+++ b/GHCustom/GHCameraModuleViewController.m
@@ -227,7 +227,7 @@ - (void)cameraModule:(GHCameraModule *)cameraModule info:(NSDictionary *)info re
 
 - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex NS_DEPRECATED_IOS(2_0, 9_0) {
     
-    [self.cameraModule start];
+//    [self.cameraModule start];
 }
 
 #pragma mark - 懒加载