xcode AVFoundation 捕获 UIImage
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AVFoundation capture UIImage
提问by La bla bla
I'm trying to capture one or more UIImages programmatically using AVFoundation.
I set up the sessions and input devices and everything, but when I try to find explanations on how to actually take the photos, all I get is buffeled information about connections and what not.
I couldn't find a single example of actually taking photos and saving it to UIImage for further processing. All the example use a constant kCGImagePropertyExifDictionaryWhich doesn't seems to exist in iOS 5 SDK..
我正在尝试使用 AVFoundation 以编程方式捕获一个或多个 UIImages。我设置了会话和输入设备以及所有内容，但是当我试图找到有关如何实际拍摄照片的解释时，我得到的只是有关连接的模糊信息，而不是连接信息。我找不到一个实际拍摄照片并将其保存到 UIImage 以供进一步处理的示例。所有示例都使用了一个常量kCGImagePropertyExifDictionary，而 iOS 5 SDK 中似乎不存在该常量。
Can someone please provide me with a code or an explanation from top to bottom on how to take and save an image from the front facing camera to a UIImage using AVFoundation?
有人可以向我提供有关如何使用 AVFoundation 从前置摄像头拍摄图像并将其保存到 UIImage 的代码或从上到下的解释吗？
Thanks alot!
非常感谢！
回答by Chris McGrath
To use kCGImagePropertyExifDictionary, you should #import <ImageIO/ImageIO.h>.
要使用kCGImagePropertyExifDictionary，你应该#import <ImageIO/ImageIO.h>。
All of the other information you seek is inside the AVFoundation Programming guide - particularly the Media Capturesection.
您需要的所有其他信息都在 AVFoundation 编程指南中 - 特别是媒体捕获部分。
