make plugin work

lama_cleaner/plugins/gif.py

@@ -0,0 +1,147 @@
+import io
+import math
+
+from PIL import Image, ImageDraw
+
+from lama_cleaner.helper import load_img
+
+
+def keep_ratio_resize(img, size, resample=Image.BILINEAR):
+    if img.width > img.height:
+        w = size
+        h = int(img.height * size / img.width)
+    else:
+        h = size
+        w = int(img.width * size / img.height)
+    return img.resize((w, h), resample)
+
+
+def cubic_bezier(p1, p2, duration: int, frames: int):
+    """
+
+    Args:
+        p1:
+        p2:
+        duration: Total duration of the curve
+        frames:
+
+    Returns:
+
+    """
+    x0, y0 = (0, 0)
+    x1, y1 = p1
+    x2, y2 = p2
+    x3, y3 = (1, 1)
+
+    def cal_y(t):
+        return (
+            math.pow(1 - t, 3) * y0
+            + 3 * math.pow(1 - t, 2) * t * y1
+            + 3 * (1 - t) * math.pow(t, 2) * y2
+            + math.pow(t, 3) * y3
+        )
+
+    def cal_x(t):
+        return (
+            math.pow(1 - t, 3) * x0
+            + 3 * math.pow(1 - t, 2) * t * x1
+            + 3 * (1 - t) * math.pow(t, 2) * x2
+            + math.pow(t, 3) * x3
+        )
+
+    res = []
+    for t in range(0, 1 * frames, duration):
+        t = t / frames
+        res.append((cal_x(t), cal_y(t)))
+
+    res.append((1, 0))
+    return res
+
+
+def make_compare_gif(
+    clean_img: Image.Image,
+    src_img: Image.Image,
+    max_side_length: int = 600,
+    splitter_width: int = 5,
+    splitter_color=(255, 203, 0, int(255 * 0.73)),
+):
+    if clean_img.size != src_img.size:
+        clean_img = clean_img.resize(src_img.size, Image.BILINEAR)
+
+    duration_per_frame = 20
+    num_frames = 50
+    # erase-in-out
+    cubic_bezier_points = cubic_bezier((0.33, 0), (0.66, 1), 1, num_frames)
+    cubic_bezier_points.reverse()
+
+    max_side_length = min(max_side_length, max(clean_img.size))
+
+    src_img = keep_ratio_resize(src_img, max_side_length)
+    clean_img = keep_ratio_resize(clean_img, max_side_length)
+    width, height = src_img.size
+
+    # Generate images to make Gif from right to left
+    images = []
+
+    for i in range(num_frames):
+        new_frame = Image.new("RGB", (width, height))
+        new_frame.paste(clean_img, (0, 0))
+
+        left = int(cubic_bezier_points[i][0] * width)
+        cropped_src_img = src_img.crop((left, 0, width, height))
+        new_frame.paste(cropped_src_img, (left, 0, width, height))
+        if i != num_frames - 1:
+            # draw a yellow splitter on the edge of the cropped image
+            draw = ImageDraw.Draw(new_frame)
+            draw.line(
+                [(left, 0), (left, height)], width=splitter_width, fill=splitter_color
+            )
+        images.append(new_frame)
+
+    for i in range(10):
+        images.append(src_img)
+
+    cubic_bezier_points.reverse()
+    # Generate images to make Gif from left to right
+    for i in range(num_frames):
+        new_frame = Image.new("RGB", (width, height))
+        new_frame.paste(src_img, (0, 0))
+
+        right = int(cubic_bezier_points[i][0] * width)
+        cropped_src_img = clean_img.crop((0, 0, right, height))
+        new_frame.paste(cropped_src_img, (0, 0, right, height))
+        if i != num_frames - 1:
+            # draw a yellow splitter on the edge of the cropped image
+            draw = ImageDraw.Draw(new_frame)
+            draw.line(
+                [(right, 0), (right, height)], width=splitter_width, fill=splitter_color
+            )
+        images.append(new_frame)
+
+    images.append(clean_img)
+
+    img_byte_arr = io.BytesIO()
+    clean_img.save(
+        img_byte_arr,
+        format="GIF",
+        save_all=True,
+        include_color_table=True,
+        append_images=images,
+        optimize=False,
+        duration=duration_per_frame,
+        loop=0,
+    )
+    return img_byte_arr.getvalue()
+
+
+class MakeGIF:
+    name = "MakeGIF"
+
+    def __call__(self, rgb_np_img, files, form):
+        origin_image = rgb_np_img
+        clean_image_bytes = files["clean_img"].read()
+        clean_image, _ = load_img(clean_image_bytes)
+        gif_bytes = make_compare_gif(
+            Image.fromarray(origin_image), Image.fromarray(clean_image)
+        )
+        return gif_bytes