需要添加的framework:CoreMedia,CoreVideo,QuartzCore,AVFoundation MyAVController.h: 原文来自：http://www.benjaminloulier.com/articles/ios4-and-direct-access-to-the-camera
Tags: AVCaptureSession, ios
需要添加的framework:CoreMedia,CoreVideo,QuartzCore,AVFoundation MyAVController.h: 原文来自：http://www.benjaminloulier.com/articles/ios4-and-direct-access-to-the-camera