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decode.py

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+import os
+import numpy as np
+import UnityPy
+from PIL import Image
+
+#made by Katboi01
+def convert(in_path, out_path):
+    env = UnityPy.load(in_path)
+
+    for obj in env.objects:
+        if obj.type.name == "Texture2D":
+                data = obj.read()
+                im : Image = data.image
+                width, height = im.size
+
+                left = int((width - 2) * 0.8)
+
+                im1 = im.crop((0, 0, left, height))
+                im1_array = np.asarray(im1, dtype=np.float32) / 255
+                
+                y_channel = im1_array[:, :, 0]
+                alpha_channel = im1_array[:, :, 2]
+
+                im2 = im.crop((left+2, 0, width, height)).resize((left, height), Image.NEAREST)
+                im2_array = np.asarray(im2, dtype=np.float32) / 255
+
+                cr_channel = im2_array[:, :, 0]
+                cb_channel = im2_array[:, :, 2]
+
+                cr_channel -= 0.5
+                cb_channel -= 0.5
+
+                r_channel = np.clip(y_channel + (1.402 * cr_channel), 0, 1)
+                g_channel = np.clip(y_channel + (-0.344136 * cb_channel) + (-0.714136 * cr_channel), 0, 1)
+                b_channel = np.clip(y_channel + (1.772 * cb_channel), 0, 1)
+
+                new_image = np.stack([r_channel, g_channel, b_channel, alpha_channel], axis=-1)
+                new_image = (new_image * 255).astype(np.uint8)
+
+                result = Image.fromarray(new_image)
+
+                result.save(out_path, format="PNG")
+
+def main():
+    in_path = "decoder_in"
+    out_path = "decoder_out"
+    if not os.path.isdir(in_path):
+        os.makedirs(in_path)
+        print("Put all files to extract in decoder_in folder")
+        input("Press Enter/Return to exit")
+        
+    os.makedirs(out_path, exist_ok=True)
+
+    for _, _, files in os.walk(in_path):
+        for name in files:
+            print(name)
+            convert(os.path.join(in_path, name), os.path.join(out_path, name))
+
+main()