unity 利用WebCamTexture实现开启摄像头_解决发布到安卓后反转问题。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

//挂载到RawImage上即可
public class Webcam_Test : MonoBehaviour
{

    private bool camAvailable;

    private WebCamTexture cameraTexture;

    public RawImage background;//加上AspectRatioFitter组件调整画面尺寸
    public AspectRatioFitter fit;
   
    void Start()
    {
        StartCoroutine("InitCameraCor");
        //background.texture = null;

        //WebCamDevice[] devices = WebCamTexture.devices;

        //if (devices.Length == 0)
        //    return;

        //for (int i = 0; i < devices.Length; i++)
        //{
        //    var curr = devices[i];

        //        curr = WebCamTexture.devices[0];
        //        cameraTexture = new WebCamTexture(curr.name, Screen.width, Screen.height, 15);

        //}

        //if (cameraTexture == null)
        //    return;

        //cameraTexture.Play(); // Start the camera  
        //background.texture = cameraTexture; // Set the texture  

        //camAvailable = true; // Set the camAvailable for future purposes.  
    }

    // Update is called once per frame  
    void Update()
    {
      
        if (cameraTexture == null) return;

        float ratio = (float)cameraTexture.width / (float)cameraTexture.height;
        fit.aspectRatio = ratio; // Set the aspect ratio  

        float scaleY = cameraTexture.videoVerticallyMirrored ? -1f : 1f; // Find if the camera is mirrored or not  
        background.rectTransform.localScale = new Vector3(1f, scaleY, 1f); // Swap the mirrored camera  

        int orient = -cameraTexture.videoRotationAngle;
        background.rectTransform.localEulerAngles = new Vector3(0, 0, orient);

    }

    ///

 
    /// 初始化摄像头
    ///

 
    public IEnumerator InitCameraCor()
    {
        
        yield return Application.RequestUserAuthorization(UserAuthorization.WebCam);

        if (Application.HasUserAuthorization(UserAuthorization.WebCam))
        {
            WebCamDevice[] devices = WebCamTexture.devices;
            var DeviceName = devices[0].name;
            //判断平台
            if (Application.platform==RuntimePlatform.Android|| Application.platform == RuntimePlatform.IPhonePlayer)
            {
                for (int i = 0; i < devices.Length; i++)
                {
                    //开启后置摄像头
                    if(!devices[i].isFrontFacing)
                    {
                        DeviceName = devices[i].name;
                        break;
                    }
                }
            }
           
            cameraTexture = new WebCamTexture(DeviceName, Screen.width, Screen.height,15);
            cameraTexture.Play(); // Start the camera  
            background.texture = cameraTexture; // Set the texture  
          
        }
    }

   

    //这下面的是我跳转到AR场景当中的，需要把上个场景中的webcamTexture关闭。

    //没有这一需求的小伙伴门可以忽略

    //private void OnDestroy()
    //{

    //    cameraTexture.Stop();
    //    cameraTexture = null;
    //}
}