MilLunePlayer/milimg.html at main · Milforge/MilLunePlayer · GitHub

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<!DOCTYPE html>
<html lang="zh-CN">
<head>
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
   <title>MilImg 图像解码器</title>
   <style>
       * {
           margin: 0;
           padding: 0;
           box-sizing: border-box;
       }

       body {
           font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
           background: #1a1a1a;
           color: #e0e0e0;
           min-height: 100vh;
           padding: 20px;
       }

       .container {
           max-width: 800px;
           margin: 0 auto;
       }

       h1 {
           text-align: center;
           margin-bottom: 30px;
           color: #fff;
           font-weight: 400;
       }

       .upload-section {
           background: #252525;
           padding: 30px;
           border-radius: 8px;
           text-align: center;
           margin-bottom: 20px;
           border: 2px dashed #444;
           transition: border-color 0.3s;
       }

       .upload-section:hover {
           border-color: #4a90e2;
       }

       .upload-btn {
           display: inline-block;
           background: #4a90e2;
           color: white;
           padding: 12px 30px;
           border-radius: 4px;
           cursor: pointer;
           font-size: 16px;
           transition: background 0.2s;
       }

       .upload-btn:hover {
           background: #357abd;
       }

       #load-btn {
           display: none;
       }

       .info-section {
           background: #252525;
           padding: 20px;
           border-radius: 8px;
           margin-bottom: 20px;
           display: none;
       }

       .info-section h3 {
           color: #4a90e2;
           margin-bottom: 15px;
           font-weight: 400;
       }

       #info {
           background: #1a1a1a;
           padding: 15px;
           border-radius: 4px;
           font-family: "Consolas", "Monaco", monospace;
           font-size: 13px;
           line-height: 1.6;
           white-space: pre-wrap;
           word-break: break-all;
           max-height: 300px;
           overflow-y: auto;
       }

       .image-section {
           background: #252525;
           padding: 20px;
           border-radius: 8px;
           text-align: center;
           display: none;
       }

       .image-section h3 {
           color: #4a90e2;
           margin-bottom: 15px;
           font-weight: 400;
       }

       #decoded-img {
           max-width: 100%;
           max-height: 500px;
           border-radius: 4px;
           background: #1a1a1a;
       }

       .action-btns {
           margin-top: 20px;
           display: flex;
           gap: 10px;
           justify-content: center;
           flex-wrap: wrap;
       }

       .btn {
           background: #4a90e2;
           color: white;
           border: none;
           padding: 10px 20px;
           border-radius: 4px;
           cursor: pointer;
           font-size: 14px;
           transition: background 0.2s;
           text-decoration: none;
           display: inline-block;
       }

       .btn:hover {
           background: #357abd;
       }

       .btn-secondary {
           background: #555;
       }

       .btn-secondary:hover {
           background: #666;
       }

       .loading {
           display: none;
           text-align: center;
           padding: 40px;
       }

       .spinner {
           width: 40px;
           height: 40px;
           border: 3px solid rgba(255,255,255,0.3);
           border-top: 3px solid #4a90e2;
           border-radius: 50%;
           animation: spin 1s linear infinite;
           margin: 0 auto 15px;
       }

       @keyframes spin {
           0% { transform: rotate(0deg); }
           100% { transform: rotate(360deg); }
       }

       .error {
           background: #ff6b6b;
           color: white;
           padding: 15px;
           border-radius: 4px;
           margin-top: 20px;
           display: none;
       }
   </style>
</head>
<body>
   <div class="container">
       <h1>🖼️ MilImg 图像解码器</h1>

       <div class="upload-section" id="drop-zone">
           <label class="upload-btn" for="load-btn">选择 MilImg 文件</label>
           <input id="load-btn" type="file" accept="*/*">
           <p style="margin-top: 15px; color: #888; font-size: 14px;">或将文件拖放到此处</p>
       </div>

       <div class="loading" id="loading">
           <div class="spinner"></div>
           <p>正在解码...</p>
       </div>

       <div class="error" id="error"></div>

       <div class="info-section" id="info-section">
           <h3>📋 图像信息</h3>
           <div id="info"></div>
       </div>

       <div class="image-section" id="image-section">
           <h3>🎨 解码结果</h3>
           <img id="decoded-img" alt="解码后的图像">
           <div class="action-btns">
               <a id="download-btn" class="btn" download="decoded.png">💾 导出 PNG</a>
               <button class="btn btn-secondary" id="reset-btn">🔄 重置</button>
           </div>
       </div>
   </div>

   <script>
       // 状态管理
       let currentDecodedData = null;
       let currentCanvas = null;

       // DOM 元素
       const els = {
           loadBtn: document.getElementById('load-btn'),
           dropZone: document.getElementById('drop-zone'),
           loading: document.getElementById('loading'),
           error: document.getElementById('error'),
           infoSection: document.getElementById('info-section'),
           info: document.getElementById('info'),
           imageSection: document.getElementById('image-section'),
           decodedImg: document.getElementById('decoded-img'),
           downloadBtn: document.getElementById('download-btn'),
           resetBtn: document.getElementById('reset-btn')
       };

       // RGBA 转 PNG Data URL
       const rgbaToPng = (decoded) => {
           const imgData = new ImageData(
               new Uint8ClampedArray(decoded.data),
               decoded.width,
               decoded.height
           );
           const canvas = document.createElement("canvas");
           canvas.width = decoded.width;
           canvas.height = decoded.height;
           const ctx = canvas.getContext("2d");
           ctx.putImageData(imgData, 0, 0);
           return {
               dataUrl: canvas.toDataURL("image/png"),
               canvas: canvas
           };
       };

       // 显示错误
       const showError = (msg) => {
           els.error.textContent = msg;
           els.error.style.display = 'block';
           els.loading.style.display = 'none';
       };

       // 隐藏错误
       const hideError = () => {
           els.error.style.display = 'none';
       };

       // 重置界面
       const resetUI = () => {
           els.infoSection.style.display = 'none';
           els.imageSection.style.display = 'none';
           els.loading.style.display = 'none';
           hideError();
           els.loadBtn.value = '';
           currentDecodedData = null;
           currentCanvas = null;
       };

       // 处理文件
       const processFile = async (file) => {
           if (!file) return;

           hideError();
           els.loading.style.display = 'block';
           els.infoSection.style.display = 'none';
           els.imageSection.style.display = 'none';

           try {
               const h5bind = await import("./src/h5bind.js");
               const decoder = new h5bind.default.MilImgDecoder({
                   buildDirectory: "./build/",
               });

               await decoder.init();

               const arrayBuffer = await file.arrayBuffer();
               const imgPtr = await decoder.load(arrayBuffer);
               const info = decoder.get_info(imgPtr);
               const decoded = await decoder.decode(imgPtr);

               // 转换为 PNG
               const { dataUrl, canvas } = rgbaToPng(decoded);
               currentDecodedData = dataUrl;
               currentCanvas = canvas;

               // 显示信息
               els.info.textContent = JSON.stringify(info, null, 2);
               els.infoSection.style.display = 'block';

               // 显示图像
               els.decodedImg.src = dataUrl;
               els.downloadBtn.href = dataUrl;
               els.downloadBtn.download = file.name.replace(/\.[^/.]+$/, '') + '.png';
               els.imageSection.style.display = 'block';

               els.loading.style.display = 'none';

           } catch (err) {
               console.error(err);
               showError('解码失败: ' + err.message);
           }
       };

       // 文件选择事件
       els.loadBtn.addEventListener('change', (e) => {
           if (e.target.files.length > 0) {
               processFile(e.target.files[0]);
           }
       });

       // 拖放支持
       els.dropZone.addEventListener('dragover', (e) => {
           e.preventDefault();
           els.dropZone.style.borderColor = '#4a90e2';
       });

       els.dropZone.addEventListener('dragleave', (e) => {
           e.preventDefault();
           els.dropZone.style.borderColor = '#444';
       });

       els.dropZone.addEventListener('drop', (e) => {
           e.preventDefault();
           els.dropZone.style.borderColor = '#444';
           if (e.dataTransfer.files.length > 0) {
               processFile(e.dataTransfer.files[0]);
           }
       });

       // 重置按钮
       els.resetBtn.addEventListener('click', resetUI);
   </script>
</body>
</html>