Hololens2-捕获照片成文件并上传至服务器（unity）

using System;

using System.IO;

using System.Linq;

using UnityEngine;

using UnityEngine.Windows.WebCam;

public class MyPhotoCapture : MonoBehaviour

{

    PhotoCapture photoCaptureObject = null;

    internal string filePath = string.Empty;

    internal bool captureIsActive;

    private void Start()

    {

        // Clean up the LocalState folder of this application from all photos stored

        DirectoryInfo info = new DirectoryInfo(Application.persistentDataPath);

        var fileInfo = info.GetFiles();

        foreach (var file in fileInfo)

        {

            try

            {

                file.Delete();

            }

            catch (Exception)

            {

                Debug.LogFormat("Cannot delete file: ", file.Name);

            }

        }

        //StartCapture();

    }

    public void StartCapture()

    {

        if (!captureIsActive)

        {

            captureIsActive = true;

            PhotoCapture.CreateAsync(false, OnPhotoCaptureCreated);

        }

        else

        {

            captureIsActive = false;

        }

    }

    void OnPhotoCaptureCreated(PhotoCapture captureObject)

    {

        photoCaptureObject = captureObject;

        var cameraResolution = PhotoCapture.SupportedResolutions

                .OrderByDescending((res) => res.width * res.height)

                .First();

        var cameraParams = new CameraParameters()

        {

            hologramOpacity = 0f,

            cameraResolutionWidth = cameraResolution.width,

            cameraResolutionHeight = cameraResolution.height,

            pixelFormat = CapturePixelFormat.BGRA32

        };

        captureObject.StartPhotoModeAsync(cameraParams, OnPhotoModeStarted);

    }

    private void OnPhotoModeStarted(PhotoCapture.PhotoCaptureResult result)

    {

        if (result.success)

        {

            string filename = string.Format(@"CapturedImage_{0}.jpg", DateTime.Now.ToString("yyyyMMddHHmmss"));

            filePath = Path.Combine(Application.persistentDataPath, filename);

            photoCaptureObject.TakePhotoAsync(filePath, PhotoCaptureFileOutputFormat.JPG, OnCapturedPhotoToDisk);

        }

        else

        {

            Debug.LogError("Unable to start photo mode!");

        }

    }

    void OnCapturedPhotoToDisk(PhotoCapture.PhotoCaptureResult result)

    {

        if (result.success)

        {

            Debug.Log("Saved Photo to disk!");

            photoCaptureObject.StopPhotoModeAsync(OnStoppedPhotoMode);

        }

        else

        {

            Debug.Log("Failed to save Photo to disk");

        }

    }

    void OnStoppedPhotoMode(PhotoCapture.PhotoCaptureResult result)

    {

        photoCaptureObject.Dispose();

        photoCaptureObject = null;

        captureIsActive = false;

        StartCoroutine(CustomVisionAnalyser.Instance.AnalyseLastImageCaptured(filePath));

    }

}

using System.Collections;

using System.IO;

using UnityEngine;

using UnityEngine.Networking;

public class CustomVisionAnalyser : MonoBehaviour

{

    public static CustomVisionAnalyser Instance;

    private string predictionEndpoint = "http://192.168.0.103:5000/upload";

    /// <summary>

    /// Byte array of the image to submit for analysis

    /// </summary>

    [HideInInspector] public byte[] imageBytes;

    private void Awake()

    {

        Instance = this;

    }

    /// <summary>

    /// Call the Computer Vision Service to submit the image.

    /// </summary>

    public IEnumerator AnalyseLastImageCaptured(string imagePath)

    {

        WWWForm webForm = new WWWForm();

        // Gets a byte array out of the saved image

        imageBytes = GetImageAsByteArray(imagePath);

        // 将图片 byte 数组添加进表单

        webForm.AddBinaryData("file", imageBytes, "photo.jpg");

        // 将图片上传到服务器

        using (UnityWebRequest unityWebRequest = UnityWebRequest.Post(predictionEndpoint, webForm))

        {

            // The download handler will help receiving the analysis from Azure

            unityWebRequest.downloadHandler = new DownloadHandlerBuffer();

            // Send the request

            yield return unityWebRequest.SendWebRequest();

            if (unityWebRequest.isHttpError || unityWebRequest.isNetworkError)

            {

                Debug.Log(unityWebRequest.error);

            }

            else

            {

                string response = unityWebRequest.downloadHandler.text;

                Debug.Log(response);

            }

        }

    }

    /// <summary>

    /// Returns the contents of the specified image file as a byte array.

    /// </summary>

    static byte[] GetImageAsByteArray(string imageFilePath)

    {

        FileStream fileStream = new FileStream(imageFilePath, FileMode.Open, FileAccess.Read);

        BinaryReader binaryReader = new BinaryReader(fileStream);

        return binaryReader.ReadBytes((int)fileStream.Length);

    }

}