Hololens2-捕获照片到内存并上传至服务器（unity）

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using UnityEngine;

using UnityEngine.Windows.WebCam;

public class MyPhotoCapture : MonoBehaviour

{

    PhotoCapture photoCaptureObject = null;

    internal bool captureIsActive;

    private void Start()

    {

        //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.JPEG

        };

        captureObject.StartPhotoModeAsync(cameraParams, OnPhotoModeStarted);

    }

    private void OnPhotoModeStarted(PhotoCapture.PhotoCaptureResult result)

    {

        if (result.success)

        {

            photoCaptureObject.TakePhotoAsync((photoCaptureResult, frame) =>

            {

                if (photoCaptureResult.success)

                {

                    Debug.Log("Photo capture done.");

                    var buffer = new List<byte>();

                    frame.CopyRawImageDataIntoBuffer(buffer);

                    StartCoroutine(CustomVisionAnalyser.Instance.AnalyseLastImageCaptured(buffer.ToArray()));

                }

                photoCaptureObject.StopPhotoModeAsync(OnStoppedPhotoMode);

            });

        }

        else

        {

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

        }

    }

    void OnStoppedPhotoMode(PhotoCapture.PhotoCaptureResult result)

    {

        photoCaptureObject.Dispose();

        photoCaptureObject = null;

        captureIsActive = false;

    }

}

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";

    private void Awake()

    {

        Instance = this;

    }

    /// <summary>

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

    /// </summary>

    public IEnumerator AnalyseLastImageCaptured(byte[] imageBytes)

    {

        WWWForm webForm = new WWWForm();

        // 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);

            }

        }

    }

}