Unity 从文件夹加载媒体并在 RawImage 上显示

问题描述

我正在尝试在 Unity 中创建一个媒体播放器，它从静态文件夹中读取所有媒体文件并通过所有媒体播放(图像静态持续时间，视频长度的视频).首先，我试图让它只处理图像.

I am trying to create a media player in Unity that reads all media files from a static folder and plays trough all medias (images static duration, videos for the length of the video). First I am trying to get it to work with just images.

我对 Unity 很陌生，不擅长 C#.我能够将所有媒体文件源(图像)放入一个数组，但接下来我需要将它们转换为纹理并放置在 RawImage 组件上.我被这部分困住了.

I'm very new with Unity and not good with C#. I'm able to get all media file sources (images) to an array but next I need to convert them to a texture and place on the RawImage -component. I'm stuck with this part.

如果我有 src(例如 C:mediasimg1.jpg)，那么我如何将它作为图像放置在 RawImage 组件上?

If I have the src (ex. C:mediasimg1.jpg) then how could I place this as a image on the RawImage -component?

我的代码 ->

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEditor;
using System;
using System.IO;
using System.Linq;

public class Player : MonoBehaviour {

    // Use this for initialization
    void Start () {
        DirectoryInfo dir = new DirectoryInfo(@"C:medias");
        string[] extensions = new[] { ".jpg", ".JPG", ".jpeg", ".JPEG", ".png", ".PNG", ".ogg", ".OGG" };
        FileInfo[] info = dir.GetFiles().Where(f => extensions.Contains(f.Extension.ToLower())).ToArray();
        Debug.Log (info[0]);
        // Logs C:mediasimg1.jpg
    }

    // Update is called once per frame
    void Update () {

    }
}

谢谢:)

推荐答案

我对 Unity 很陌生，不擅长 C#.我能得到所有媒体文件源(图像)到一个数组，但接下来我需要转换它们到纹理并放置在 RawImage 组件上.我被困住了这部分.

I'm very new with Unity and not good with C#. I'm able to get all media file sources (images) to an array but next I need to convert them to a texture and place on the RawImage -component. I'm stuck with this part.

您正在寻找 Texture2D.LoadImage功能.它将图像字节转换为 Texture2D，然后您可以将该 Texture2D 分配给 RawImage.

You are looking for the Texture2D.LoadImage function. It converts image bytes to Texture2D then you can assign that Texture2D to the RawImage.

您必须提出有关如何使用视频执行此操作的新问题.这要复杂得多.

You have to ask new question about how to do this with Videos. That's much more complicated.

public RawImage rawImage;
Texture2D[] textures = null;

//Search for files
DirectoryInfo dir = new DirectoryInfo(@"C:medias");
string[] extensions = new[] { ".jpg", ".JPG", ".jpeg", ".JPEG", ".png", ".PNG", ".ogg", ".OGG" };
FileInfo[] info = dir.GetFiles().Where(f => extensions.Contains(f.Extension.ToLower())).ToArray();

//Init Array
textures = new Texture2D[info.Length];


for (int i = 0; i < info.Length; i++)
{
    MemoryStream dest = new MemoryStream();

    //Read from each Image File
    using (Stream source = info[i].OpenRead())
    {
        byte[] buffer = new byte[2048];
        int bytesRead;
        while ((bytesRead = source.Read(buffer, 0, buffer.Length)) > 0)
        {
            dest.Write(buffer, 0, bytesRead);
        }
    }

    byte[] imageBytes = dest.ToArray();

    //Create new Texture2D
    Texture2D tempTexture = new Texture2D(2, 2);

    //Load the Image Byte to Texture2D
    tempTexture.LoadImage(imageBytes);

    //Put the Texture2D to the Array
    textures[i] = tempTexture;
}

//Load to Rawmage?
rawImage.texture = textures[0];

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