fix: compress image for req

hrp/pkg/uixt/ext.go

@@ -224,8 +224,27 @@ func (dExt *DriverExt) takeScreenShot(fileName string) (raw *bytes.Buffer, path
 }
 
 func compressImageBuffer(raw *bytes.Buffer) (compressed *bytes.Buffer, err error) {
-	// TODO: compress image data
-	return raw, nil
+	// 解码原始图像数据
+	img, format, err := image.Decode(raw)
+	if err != nil {
+		return nil, err
+	}
+
+	// 创建一个用来保存压缩后数据的buffer
+	var buf bytes.Buffer
+
+	switch format {
+	// Convert to jpeg uniformly and compress with a compression rate of 95
+	case "jpeg", "png":
+		jpegOptions := &jpeg.Options{Quality: 95}
+		err = jpeg.Encode(&buf, img, jpegOptions)
+	default:
+		return nil, fmt.Errorf("unsupported image format: %s", format)
+	}
+
+	// 返回压缩后的图像数据
+	return &buf, nil
+
 }
 
 // saveScreenShot saves image file with file name