IP摄像机视频流纹理未提供给Unity

如何解决IP摄像机视频流纹理未提供给Unity

我的目标是创建一个Unity AR应用程序（稍后将其导出到Android），用户可以在其中查看IP摄像机正在播放的内容。

为此，我使用网格渲染器（在本例中为四边形）显示图像，然后在Unity世界中添加了一个指向它的AR相机。 我从Internet上获得了以下大多数代码，并被告知需要将C＃脚本引用称为 LoadRawTextureData（），以便将流字节转换为纹理。

using UnityEngine.UI;
using UnityEngine.Networking;
using System.Collections;
using System.Collections.Generic;
using System;
using System.Net;
using System.IO;

public class IPCamConfig : MonoBehavIoUr
{

    [HideInInspector]
    public Byte[] JpegData;
    [HideInInspector]
    public string resolution = "320x240";

    private Texture2D camTexture;
    public Stream stream;
    private WebResponse resp;
    public MeshRenderer frame;

private void Start()
    {
        GetVideo();
        FindLength(stream);
    }

    void OnDestroy()
    {
        StopStream();
    }

    public void GetVideo()
    {
        // create HTTP request
        resolution = "320x240";
        string url = "http://192.168.1.104/videostream.asf?usr=admin&pwd=" + resolution + "&resolution=320*240";
        HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
        req.Credentials = new NetworkCredential("username","password");

        // get response
        resp = req.GetResponse();


        camTexture = new Texture2D(4,4,TextureFormat.ARGB32,false);

        camTexture.LoadRawTextureData(JpegData);
        camTexture.Apply();
        GetComponent<Renderer>().material.mainTexture = camTexture;

        // get response stream
        stream = resp.GetResponseStream();
        frame.material.color = Color.white;
        StartCoroutine(GetFrame());
    }

    public IEnumerator GetFrame()
    {
        while (true)
        {
            int bytesToRead = FindLength(stream);
            if (bytesToRead == -1)
            {
                //                print("End of stream");
                yield break;
            }

            int leftToRead = bytesToRead;

            while (leftToRead > 0)
            {
                //                print (leftToRead);
                leftToRead -= stream.Read(JpegData,bytesToRead - leftToRead,leftToRead);
                yield return null;
            }

            MemoryStream ms = new MemoryStream(JpegData,bytesToRead,false,true);

            camTexture.LoadImage(ms.GetBuffer());
            frame.material.mainTexture = camTexture;
            frame.material.color = Color.white;

            stream.ReadByte(); // CR after bytes
            stream.ReadByte(); // LF after bytes
        }
    }

    int FindLength(Stream stream)
    {
        int b;
        string line = "";
        int result = -1;
        bool atEOL = false;

        while ((b = stream.ReadByte()) != -1)
        {
            if (b == 10) continue; // ignore LF char
            if (b == 13)
            { // CR
                if (atEOL)
                {  // two blank lines means end of header
                    stream.ReadByte(); // eat last LF
                    return result;
                }
                if (line.StartsWith("Content-Length:"))
                {
                    result = Convert.ToInt32(line.Substring("Content-Length:".Length).Trim());
                }
                else
                {
                    line = "";
                }
                atEOL = true;
            }
            else
            {
                atEOL = false;
                line += (char)b;
            }
        }
        return -1;
    }
    
    public void StopStream()
    {
        stream.Close();
        resp.Close();
    }
}

我已经在GetVideo（）函数中实现了 LoadRawTextureData（），因为它可以在其中验证IP摄像机URL并据称从素材中渲染纹理。

相反，当我在Unity中运行应用程序时，不断出现以下错误：

UnityEngine.Texture2D:LoadRawTextureData(Byte[])
IPCamConfig:GetVideo() (at Assets/Scripts/IPCamConfig.cs:48)
IPCamConfig:Start() (at Assets/Scripts/IPCamConfig.cs:25)

还有其他我想念的东西吗？还是我必须使用另一个脚本参考/ API进行字节转换？任何帮助表示赞赏。