unity调用摄像头进行拍照和保存照片

using UnityEngine;
using System.Collections;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime .Serialization.Formatters.Binary;
using System.Threading;

public class capture_video_from_camera_device : MonoBehaviour
{
public string deviceName;
//接收返回的图片数据
WebCamTexture tex;

void OnGUI()
{
if (GUI.Button(new Rect(10, 20, 100, 40), "start"))
{
// 调用摄像头
StartCoroutine(start());
}

if(GUI.Button(new Rect(10,70,100,40),"Pause"))
{
//捕获照片
tex.Pause();
StartCoroutine(getTexture());
}

if(GUI.Button(new Rect(10,120,100,40),"replay"))
{
//重新开始
tex.Play();
}

if(GUI.Button(new Rect(120,20,80,40),"record"))
{
//录像
StartCoroutine(SeriousPhotoes());
}

if(GUI.Button(new Rect(10,170,100,40),"stop"))
{
//停止捕获镜头
tex.Stop ();
StopAllCoroutines();
}

if(tex!=null)
{
// 捕获截图大小               —距X左屏距离   |   距Y上屏距离
GUI.DrawTexture( new Rect(Screen.width/2-150,Screen.height/2-190,280,200), tex );
}

}

/// <summary>
/// 捕获窗口位置
/// </summary>
public IEnumerator start()
{
yield return Application.RequestUserAuthorization( UserAuthorization.WebCam );
if( Application.HasUserAuthorization( UserAuthorization.WebCam ))
{
WebCamDevice[] devices = WebCamTexture.devices;
deviceName= devices[0].name;
tex=new WebCamTexture(deviceName,300,300,12);
tex.Play();
}
}

/// <summary>
/// 获取截图
/// </summary>
/// <returns>The texture.</returns>
public IEnumerator getTexture()
{
yield return new WaitForEndOfFrame();
Texture2D t = new Texture2D(400,300);
t.ReadPixels( new Rect(Screen.width/2-200,Screen.height/2-50,360,300), 0, 0, false );
//距X左的距离        距Y屏上的距离
// t.ReadPixels(new Rect(220, 180, 200, 180), 0, 0, false);
t.Apply();
byte[] byt=t.EncodeToPNG();
File.WriteAllBytes( Application.dataPath+"/Photoes/"+Time.time+".jpg",byt );
tex.Play();
}

/// <summary>
/// 连续捕获照片
/// </summary>
/// <returns>The photoes.</returns>
public IEnumerator SeriousPhotoes()
{
while( true )
{
yield return new WaitForEndOfFrame();
Texture2D t = new Texture2D(400, 300, TextureFormat.RGB24, true);
t.ReadPixels(new Rect(Screen.width/2-180,Screen.height/2-50,360,300), 0, 0, false);
t.Apply();
print(t);
byte[] byt = t.EncodeToPNG();
File.WriteAllBytes(Application.dataPath + "/MulPhotoes/" + Time.time.ToString().Split('.')[0] + "_" + Time.time.ToString().Split('.')[1] + ".png", byt);
Thread.Sleep(300);
}
}
}