enable live pose conditining (#6)

- enable live pose conditining (60591c00398e95d73c7fa0c484177fcd18ac77e8)

app.py

@@ -3,6 +3,31 @@ from diffusers import StableDiffusionControlNetPipeline, ControlNetModel
 from diffusers import UniPCMultistepScheduler
 import gradio as gr
 import torch
+import base64
+from io import BytesIO
+from PIL import Image
+# live conditioning
+canvas_html = "<pose-canvas id='canvas-root' style='display:flex;max-width: 500px;margin: 0 auto;'></pose-canvas>"
+load_js = """
+async () => {
+  const url = "https://huggingface.co/datasets/radames/gradio-components/raw/main/pose-gradio.js"
+  fetch(url)
+    .then(res => res.text())
+    .then(text => {
+      const script = document.createElement('script');
+      script.type = "module"
+      script.src = URL.createObjectURL(new Blob([text], { type: 'application/javascript' }));
+      document.head.appendChild(script);
+    });
+}
+"""
+get_js_image = """
+async (image_in_img, prompt, image_file_live_opt, live_conditioning) => {
+  const canvasEl = document.getElementById("canvas-root");
+  const data = canvasEl? canvasEl._data : null;
+  return [image_in_img, prompt, image_file_live_opt, data]
+}
+"""
 
 # Constants
 low_threshold = 100
@@ -28,41 +53,84 @@ pipe.enable_xformers_memory_efficient_attention()
 # Generator seed,
 generator = torch.manual_seed(0)
 
+
 def get_pose(image):
-    return pose_model(image) 
-
-
-def generate_images(image, prompt):
-    pose = get_pose(image)
-    output = pipe(
-        prompt,
-        pose,
-        generator=generator,
-        num_images_per_prompt=3,
-        num_inference_steps=20,
-    )
-    all_outputs = []
-    all_outputs.append(pose)
-    for image in output.images:
-        all_outputs.append(image)
-    return all_outputs
-
-
-gr.Interface(
-    generate_images,
-    inputs=[
-        gr.Image(type="pil"),
-        gr.Textbox(
-            label="Enter your prompt",
-            max_lines=1,
-            placeholder="best quality, extremely detailed",
-        ),
-    ],
-    outputs=gr.Gallery().style(grid=[2], height="auto"),
-    title="Generate controlled outputs with ControlNet and Stable Diffusion. ",
-    description="This Space uses pose estimated lines as the additional conditioning.",
-    examples=[["yoga1.jpeg", "best quality, extremely detailed"]],
-    allow_flagging=False,
-).launch(enable_queue=True)
+    return pose_model(image)
+
+
+def generate_images(image, prompt, image_file_live_opt='file', live_conditioning=None):
+    if image is None and 'image' not in live_conditioning:
+        raise gr.Error("Please provide an image")
+    try:
+        if image_file_live_opt == 'file':
+            pose = get_pose(image)
+        elif image_file_live_opt == 'webcam':
+            base64_img = live_conditioning['image']
+            image_data = base64.b64decode(base64_img.split(',')[1])
+            pose = Image.open(BytesIO(image_data)).convert(
+                'RGB').resize((512, 512))
+        output = pipe(
+            prompt,
+            pose,
+            generator=generator,
+            num_images_per_prompt=3,
+            num_inference_steps=20,
+        )
+        all_outputs = []
+        all_outputs.append(pose)
+        for image in output.images:
+            all_outputs.append(image)
+        return all_outputs
+    except Exception as e:
+        raise gr.Error(str(e))
+
+
+def toggle(choice):
+    if choice == "file":
+        return gr.update(visible=True, value=None), gr.update(visible=False, value=None)
+    elif choice == "webcam":
+        return gr.update(visible=False, value=None), gr.update(visible=True, value=canvas_html)
+
+
+with gr.Blocks() as blocks:
+    gr.Markdown("""
+        ## Generate Uncanny Faces with ControlNet Stable Diffusion
+        [Check out our blog to see how this was done (and train your own controlnet)](https://huggingface.co/blog/train-your-controlnet)
+    """)
+    with gr.Row():
+        live_conditioning = gr.JSON(value={}, visible=False)
+        with gr.Column():
+            image_file_live_opt = gr.Radio(["file", "webcam"], value="file",
+                                           label="How would you like to upload your image?")
+            image_in_img = gr.Image(source="upload", visible=True, type="pil")
+            canvas = gr.HTML(None, elem_id="canvas_html", visible=False)
+
+            image_file_live_opt.change(fn=toggle,
+                                       inputs=[image_file_live_opt],
+                                       outputs=[image_in_img, canvas],
+                                       queue=False)
+            prompt = gr.Textbox(
+                label="Enter your prompt",
+                max_lines=1,
+                placeholder="best quality, extremely detailed",
+            )
+            run_button = gr.Button("Generate")
+        with gr.Column():
+            gallery = gr.Gallery().style(grid=[2], height="auto")
+    run_button.click(fn=generate_images,
+                     inputs=[image_in_img, prompt,
+                             image_file_live_opt, live_conditioning],
+                     outputs=[gallery],
+                     _js=get_js_image)
+    blocks.load(None, None, None, _js=load_js)
 
+    gr.Examples(fn=generate_images,
+                examples=[
+                    ["./yoga1.jpeg",
+                        "best quality, extremely detailed"]
+                ],
+                inputs=[image_in_img, prompt],
+                outputs=[gallery],
+                cache_examples=True)
 
+blocks.launch(debug=True)