ios 音频视频

ios 音频视频（2016-02-29 17:59） 一直未发布。。。。。 现在更新下自己的记录

1.音频 avaudio queue   AudioQueueNewInput   http://blog.csdn.net/nothingl3/article/details/42265621  http://www.cnblogs.com/sunminmin/p/4519039.html

2.

//1.创建视频设备(摄像头前，后)
　　NSArray *devices = [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo];
　　//2.初始化一个摄像头输入设备(first是后置摄像头，last是前置摄像头)
　　AVCaptureDeviceInput *inputVideo = [AVCaptureDeviceInput deviceInputWithDevice:[devices firstObject] error:NULL];
　　//3.创建麦克风设备
　　AVCaptureDevice *deviceAudio = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeAudio];
　　//4.初始化麦克风输入设备
　　AVCaptureDeviceInput *inputAudio = [AVCaptureDeviceInput deviceInputWithDevice:deviceAudio error:NULL];

 AVCaptureDevice *device = [AVCaptureDevice
                               defaultDeviceWithMediaType:AVMediaTypeVideo];//这里默认是使用后置摄像头，你可以改成前置摄像头

    // Create a device input with the device and add it to the session.
    AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:device
                                                                        error:&error];

 AVCaptureDevice *device = [AVCaptureDevice
                               defaultDeviceWithMediaType:AVMediaTypeAudio];//这里默认是使用后置摄像头，你可以改成前置摄像头

    // Create a device input with the device and add it to the session.
    AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:device
                                                                        error:&error];