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POCouldn't capture overlay image
 

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  1. POCouldn't capture overlay image
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    <p>I have 3 images. I load one by one to camera overlay image. Then i need to take snapshot. But when i click button it take snapshot of particular image. When i put imageName.png in captureStillImageWithOverlay it take snapshot of that image only, it won't taking other images when present in overlay</p> <p>Button click code:</p> <pre><code>- (void)ButtonPressed { [[self captureManager] captureStillImageWithOverlay:[UIImage imageNamed:@"img2.png"]]; } </code></pre> <p>Load images:</p> <pre><code>-(void)loadNextPage:(int)index { int countFlag=0; for(int i=index*4;i&lt;(index+1)*4;i++) { UIButton *imageView=[[UIButton alloc]initWithFrame:CGRectMake((320*index)+countFlag*80+ 2, 5, 75, 75)]; imageView.tag=i+1; [imageView addTarget:self action:@selector(imageViewClicked:) forControlEvents:UIControlEventTouchUpInside]; [imageView.layer setBorderColor:[UIColor lightGrayColor].CGColor]; [imageView.layer setBorderWidth:1.0f]; switch ((i+1)%5) { case 0: [imageView setImage:[UIImage imageNamed:@"img1.png"] forState:UIControlStateNormal]; break; case 1: [imageView setImage:[UIImage imageNamed:@"img2.png"] forState:UIControlStateNormal]; break; case 2: [imageView setImage:[UIImage imageNamed:@"img3.png"] forState:UIControlStateNormal]; break; } [myScrollView addSubview:imageView]; [imageView release]; countFlag++; } } </code></pre> <p>Capture overlay image:</p> <pre><code>- (void)captureStillImageWithOverlay:(UIImage*)overlay { AVCaptureConnection *videoConnection = nil; for (AVCaptureConnection *connection in [[self stillImageOutput] connections]) { for (AVCaptureInputPort *port in [connection inputPorts]) { if ([[port mediaType] isEqual:AVMediaTypeVideo]) { videoConnection = connection; break; } } if (videoConnection) { break; } } NSLog(@"about to request a capture from: %@", [self stillImageOutput]); [[self stillImageOutput] captureStillImageAsynchronouslyFromConnection:videoConnection completionHandler:^(CMSampleBufferRef imageSampleBuffer, NSError *error) { CFDictionaryRef exifAttachments = CMGetAttachment(imageSampleBuffer, kCGImagePropertyExifDictionary, NULL); if (exifAttachments) { NSLog(@"attachements: %@", exifAttachments); } else { NSLog(@"no attachments"); } NSData *imageData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageSampleBuffer]; UIImage *image = [[UIImage alloc] initWithData:imageData]; CGSize imageSize = [image size]; CGSize overlaySize = [overlay size]; UIGraphicsBeginImageContext(imageSize); [image drawInRect:CGRectMake(0, 0, imageSize.width, imageSize.height)]; CGFloat xScaleFactor = imageSize.width / 320; CGFloat yScaleFactor = imageSize.height / 480; [overlay drawInRect:CGRectMake(30 * xScaleFactor, 100 * yScaleFactor, overlaySize.width * xScaleFactor, overlaySize.height * yScaleFactor)]; // rect used in AROverlayViewController was (30,100,260,200) UIImage *combinedImage = UIGraphicsGetImageFromCurrentImageContext(); [self setStillImage:combinedImage]; UIGraphicsEndImageContext(); [image release]; [[NSNotificationCenter defaultCenter] postNotificationName:kImageCapturedSuccessfully object:nil]; }]; } </code></pre> <p>I take the reference from this url <a href="http://www.musicalgeometry.com/?p=1681" rel="nofollow">[http://www.musicalgeometry.com/?p=1681]</a> </p>
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