1 files changed, 106 insertions, 0 deletions
diff --git a/scripts/postprocessing_upscale.py b/scripts/postprocessing_upscale.py
new file mode 100644
index 00000000..095d29b2
--- /dev/null
+++ b/scripts/postprocessing_upscale.py
@@ -0,0 +1,106 @@
+from PIL import Image
+import numpy as np
+
+from modules import scripts_postprocessing, shared
+import gradio as gr
+
+from modules.ui_components import FormRow
+
+
+upscale_cache = {}
+
+
+class ScriptPostprocessingUpscale(scripts_postprocessing.ScriptPostprocessing):
+    name = "Upscale"
+    order = 1000
+
+    def ui(self):
+        selected_tab = gr.State(value=0)
+
+        with gr.Tabs(elem_id="extras_resize_mode"):
+            with gr.TabItem('Scale by', elem_id="extras_scale_by_tab") as tab_scale_by:
+                upscaling_resize = gr.Slider(minimum=1.0, maximum=8.0, step=0.05, label="Resize", value=4, elem_id="extras_upscaling_resize")
+
+            with gr.TabItem('Scale to', elem_id="extras_scale_to_tab") as tab_scale_to:
+                with FormRow():
+                    upscaling_resize_w = gr.Number(label="Width", value=512, precision=0, elem_id="extras_upscaling_resize_w")
+                    upscaling_resize_h = gr.Number(label="Height", value=512, precision=0, elem_id="extras_upscaling_resize_h")
+                    upscaling_crop = gr.Checkbox(label='Crop to fit', value=True, elem_id="extras_upscaling_crop")
+
+        with FormRow():
+            extras_upscaler_1 = gr.Dropdown(label='Upscaler 1', elem_id="extras_upscaler_1", choices=[x.name for x in shared.sd_upscalers], value=shared.sd_upscalers[0].name)
+
+        with FormRow():
+            extras_upscaler_2 = gr.Dropdown(label='Upscaler 2', elem_id="extras_upscaler_2", choices=[x.name for x in shared.sd_upscalers], value=shared.sd_upscalers[0].name)
+            extras_upscaler_2_visibility = gr.Slider(minimum=0.0, maximum=1.0, step=0.001, label="Upscaler 2 visibility", value=0.0, elem_id="extras_upscaler_2_visibility")
+
+        tab_scale_by.select(fn=lambda: 0, inputs=[], outputs=[selected_tab])
+        tab_scale_to.select(fn=lambda: 1, inputs=[], outputs=[selected_tab])
+
+        return {
+            "upscale_mode": selected_tab,
+            "upscale_by": upscaling_resize,
+            "upscale_to_width": upscaling_resize_w,
+            "upscale_to_height": upscaling_resize_h,
+            "upscale_crop": upscaling_crop,
+            "upscaler_1_name": extras_upscaler_1,
+            "upscaler_2_name": extras_upscaler_2,
+            "upscaler_2_visibility": extras_upscaler_2_visibility,
+        }
+
+    def upscale(self, image, info, upscaler, upscale_mode, upscale_by,  upscale_to_width, upscale_to_height, upscale_crop):
+        if upscale_mode == 1:
+            upscale_by = max(upscale_to_width/image.width, upscale_to_height/image.height)
+            info["Postprocess upscale to"] = f"{upscale_to_width}x{upscale_to_height}"
+        else:
+            info["Postprocess upscale by"] = upscale_by
+
+        cache_key = (hash(np.array(image.getdata()).tobytes()), upscaler.name, upscale_mode, upscale_by,  upscale_to_width, upscale_to_height, upscale_crop)
+        cached_image = upscale_cache.pop(cache_key, None)
+
+        if cached_image is not None:
+            image = cached_image
+        else:
+            image = upscaler.scaler.upscale(image, upscale_by, upscaler.data_path)
+
+        upscale_cache[cache_key] = image
+        if len(upscale_cache) > shared.opts.upscaling_max_images_in_cache:
+            upscale_cache.pop(next(iter(upscale_cache), None), None)
+
+        if upscale_mode == 1 and upscale_crop:
+            cropped = Image.new("RGB", (upscale_to_width, upscale_to_height))
+            cropped.paste(image, box=(upscale_to_width // 2 - image.width // 2, upscale_to_height // 2 - image.height // 2))
+            image = cropped
+            info["Postprocess crop to"] = f"{image.width}x{image.height}"
+
+        return image
+
+    def process(self, pp: scripts_postprocessing.PostprocessedImage, upscale_mode=1, upscale_by=2.0, upscale_to_width=None, upscale_to_height=None, upscale_crop=False, upscaler_1_name=None, upscaler_2_name=None, upscaler_2_visibility=0.0):
+        if upscaler_1_name == "None":
+            upscaler_1_name = None
+
+        upscaler1 = next(iter([x for x in shared.sd_upscalers if x.name == upscaler_1_name]), None)
+        assert upscaler1 or (upscaler_1_name is None), f'could not find upscaler named {upscaler_1_name}'
+
+        if not upscaler1:
+            return
+
+        if upscaler_2_name == "None":
+            upscaler_2_name = None
+
+        upscaler2 = next(iter([x for x in shared.sd_upscalers if x.name == upscaler_2_name and x.name != "None"]), None)
+        assert upscaler2 or (upscaler_2_name is None), f'could not find upscaler named {upscaler_2_name}'
+
+        upscaled_image = self.upscale(pp.image, pp.info, upscaler1, upscale_mode, upscale_by, upscale_to_width, upscale_to_height, upscale_crop)
+        pp.info[f"Postprocess upscaler"] = upscaler1.name
+
+        if upscaler2 and upscaler_2_visibility > 0:
+            second_upscale = self.upscale(pp.image, pp.info, upscaler2, upscale_mode, upscale_by, upscale_to_width, upscale_to_height, upscale_crop)
+            upscaled_image = Image.blend(upscaled_image, second_upscale, upscaler_2_visibility)
+
+            pp.info[f"Postprocess upscaler 2"] = upscaler2.name
+
+        pp.image = upscaled_image
+
+    def image_changed(self):
+        upscale_cache.clear()