feat: add jpeg damage filter to fx

konabot/plugins/fx_process/fx_handle.py

@@ -1,4 +1,5 @@
 import random
+from io import BytesIO
 from PIL import Image, ImageFilter, ImageDraw, ImageStat, ImageFont
 from PIL import ImageEnhance
 from PIL import ImageChops
@@ -167,6 +168,29 @@ class ImageFilterImplement:
         
         return Image.fromarray(result, 'RGBA')
     
+    # JPEG 损坏感压缩
+    @staticmethod
+    def apply_jpeg_damage(image: Image.Image, quality: int = 10) -> Image.Image:
+        quality = max(1, min(95, int(quality)))
+
+        alpha = None
+        if image.mode in ('RGBA', 'LA') or (image.mode == 'P' and 'transparency' in image.info):
+            rgba_image = image.convert('RGBA')
+            alpha = rgba_image.getchannel('A')
+            rgb_image = Image.new('RGB', rgba_image.size, (255, 255, 255))
+            rgb_image.paste(rgba_image, mask=alpha)
+        else:
+            rgb_image = image.convert('RGB')
+
+        output = BytesIO()
+        rgb_image.save(output, format='JPEG', quality=quality, optimize=False)
+        output.seek(0)
+        damaged = Image.open(output).convert('RGB')
+
+        if alpha is not None:
+            return Image.merge('RGBA', (*damaged.split(), alpha))
+        return damaged.convert('RGBA')
+
     # 缩放
     @staticmethod
     def apply_resize(image: Image.Image, scale: float = 1.5, scale_y = None) -> Image.Image: