add UniPC

app.py

@@ -0,0 +1,272 @@
+from diffusers import AutoencoderKL, UNet2DConditionModel, StableDiffusionPipeline, StableDiffusionImg2ImgPipeline, UniPCMultistepScheduler
+import gradio as gr
+import torch
+from PIL import Image
+import os
+
+scheduler = UniPCMultistepScheduler(
+    beta_start=0.00085,
+    beta_end =0.012,
+    solver_order=2,
+    prediction_type="epsilon",
+    thresholding=False,
+    solver_type='bh2',
+    lower_order_final=True,
+    disable_corrector=[0],
+)
+
+class Model:
+    def __init__(self, name, path, prefix):
+        self.name = name
+        self.path = path
+        self.prefix = prefix
+        self.pipe_t2i = None
+        self.pipe_i2i = None
+
+models = [
+     Model("Stable-Diffusion-v1.4", "CompVis/stable-diffusion-v1-4", "The 1.4 version of official stable-diffusion"),
+     Model("Waifu", "hakurei/waifu-diffusion", "anime style"),
+]
+
+last_mode = "txt2img"
+current_model = models[0]
+current_model_path = current_model.path
+
+auth_token = os.getenv("HUGGING_FACE_HUB_TOKEN")
+
+print(f"Is CUDA available: {torch.cuda.is_available()}")
+
+if torch.cuda.is_available():
+  vae = AutoencoderKL.from_pretrained(current_model.path, subfolder="vae", torch_dtype=torch.float16, use_auth_token=auth_token)
+  for model in models:
+    try:
+        unet = UNet2DConditionModel.from_pretrained(model.path, subfolder="unet", torch_dtype=torch.float16, use_auth_token=auth_token)
+        model.pipe_t2i = StableDiffusionPipeline.from_pretrained(model.path, unet=unet, vae=vae, torch_dtype=torch.float16, scheduler=scheduler, use_auth_token=auth_token)
+        model.pipe_i2i = StableDiffusionImg2ImgPipeline.from_pretrained(model.path, unet=unet, vae=vae, torch_dtype=torch.float16, scheduler=scheduler, use_auth_token=auth_token)
+    except:
+        models.remove(model)
+  pipe = models[0].pipe_t2i
+  pipe = pipe.to("cuda")
+
+else:
+  vae = AutoencoderKL.from_pretrained(current_model.path, subfolder="vae", use_auth_token=auth_token)
+  for model in models:
+    try:
+        unet = UNet2DConditionModel.from_pretrained(model.path, subfolder="unet", use_auth_token=auth_token)
+        model.pipe_t2i = StableDiffusionPipeline.from_pretrained(model.path, unet=unet, vae=vae, scheduler=scheduler, use_auth_token=auth_token)
+        model.pipe_i2i = StableDiffusionImg2ImgPipeline.from_pretrained(model.path, unet=unet, vae=vae, scheduler=scheduler, use_auth_token=auth_token)
+    except:
+        models.remove(model)
+  pipe = models[0].pipe_t2i
+  pipe = pipe.to("cpu")
+
+device = "GPU 🔥" if torch.cuda.is_available() else "CPU 🥶"
+
+def inference(model_name, prompt, guidance, steps, width=512, height=512, seed=0, img=None, strength=0.5, neg_prompt=""):
+
+  global current_model
+  for model in models:
+    if model.name == model_name:
+      current_model = model
+      model_path = current_model.path
+
+  generator = torch.Generator('cuda' if torch.cuda.is_available() else 'cpu').manual_seed(seed) if seed != 0 else None
+
+  if img is not None:
+    return img_to_img(model_path, prompt, neg_prompt, img, strength, guidance, steps, width, height, generator)
+  else:
+    return txt_to_img(model_path, prompt, neg_prompt, guidance, steps, width, height, generator)
+
+def txt_to_img(model_path, prompt, neg_prompt, guidance, steps, width, height, generator=None):
+
+    global last_mode
+    global pipe
+    global current_model_path
+    if model_path != current_model_path or last_mode != "txt2img":
+        current_model_path = model_path
+
+        pipe.to("cpu")
+        pipe = current_model.pipe_t2i
+
+        if torch.cuda.is_available():
+          pipe = pipe.to("cuda")
+        last_mode = "txt2img"
+
+    prompt = current_model.prefix + prompt
+    result = pipe(
+      prompt,
+      negative_prompt = neg_prompt,
+      # num_images_per_prompt=n_images,
+      num_inference_steps = int(steps),
+      guidance_scale = guidance,
+      width = width,
+      height = height,
+      generator = generator)
+    
+    return replace_nsfw_images(result)
+
+def img_to_img(model_path, prompt, neg_prompt, img, strength, guidance, steps, width, height, generator=None):
+
+    global last_mode
+    global pipe
+    global current_model_path
+    if model_path != current_model_path or last_mode != "img2img":
+        current_model_path = model_path
+
+        pipe.to("cpu")
+        pipe = current_model.pipe_i2i
+        
+        if torch.cuda.is_available():
+          pipe = pipe.to("cuda")
+        last_mode = "img2img"
+
+    prompt = current_model.prefix + prompt
+    ratio = min(height / img.height, width / img.width)
+    img = img.resize((int(img.width * ratio), int(img.height * ratio)), Image.LANCZOS)
+    result = pipe(
+        prompt,
+        negative_prompt = neg_prompt,
+        # num_images_per_prompt=n_images,
+        init_image = img,
+        num_inference_steps = int(steps),
+        strength = strength,
+        guidance_scale = guidance,
+        #width = width,
+        #height = height,
+        generator = generator)
+        
+    return replace_nsfw_images(result)
+
+def replace_nsfw_images(results):
+    for i in range(len(results.images)):
+      if results.nsfw_content_detected[i]:
+        results.images[i] = Image.open("nsfw.png")
+    return results.images[0]
+
+css = """
+  <style>
+  .finetuned-diffusion-div {
+      text-align: center;
+      max-width: 700px;
+      margin: 0 auto;
+      font-family: 'IBM Plex Sans', sans-serif;
+    }
+    .finetuned-diffusion-div div {
+      display: inline-flex;
+      align-items: center;
+      gap: 0.8rem;
+      font-size: 1.75rem;
+    }
+    .finetuned-diffusion-div div h1 {
+      font-weight: 900;
+      margin-top: 15px;
+      margin-bottom: 15px;
+      text-align: center;
+      line-height: 150%;
+    }
+    .finetuned-diffusion-div p {
+      margin-bottom: 10px;
+      font-size: 94%;
+    }
+    .finetuned-diffusion-div p a {
+      text-decoration: underline;
+    }
+    .tabs {
+      margin-top: 0px;
+      margin-bottom: 0px;
+    }
+    #gallery {
+      min-height: 20rem;
+    }
+    .container {
+      max-width: 1000px;
+      margin: auto;
+      padding-top: 1.5rem;
+    }
+  </style>
+"""
+with gr.Blocks(css=css) as demo:
+    gr.HTML(
+        f"""
+            <div class="finetuned-diffusion-div">
+              <div>
+                <h1>Stable-Diffusion with UniPC</h1>
+              </div>
+              <br>
+              <p>
+              ❤️ Acknowledgement: Hardware resources of this demo are supported by HuggingFace 🤗 . Many thanks for the help!
+              </p>
+              <br>
+              <p>
+               This is a demo of sampling by UniPC with two variants of Stable Diffusion models, including <a href="https://huggingface.co/CompVis/stable-diffusion-v1-4">Stable-Diffusion-v1.4</a> and <a href="https://huggingface.co/hakurei/waifu-diffusion">Waifu</a>.
+              </p>
+              <br>
+              <p>
+               <a href="https://github.com/wl-zhao/UniPC">UniPC</a> is a training-free framework designed for the fast sampling of diffusion models, which consists of a corrector (UniC) and a predictor (UniP) that share a unified analytical form and support arbitrary orders.
+              </p>
+              <p>
+              We use <a href="https://github.com/huggingface/diffusers">Diffusers</a>  🧨  to implement this demo, which currently supports the multistep UniPC scheduler. For more details of UniPC with Diffusers, check <a href="https://github.com/huggingface/diffusers/pull/2373">this pull request</a>.
+              </p>
+              <br>
+              <br>
+              <p>
+               Running on <b>{device}</b>
+              </p>
+            </div>
+        """
+    )
+
+    with gr.Row():
+        
+        with gr.Column(scale=55):
+          with gr.Group():
+              model_name = gr.Dropdown(label="Model", choices=[m.name for m in models], value=current_model.name)
+              with gr.Row():
+                prompt = gr.Textbox(label="Prompt", show_label=False, max_lines=2,placeholder="Enter prompt. Style applied automatically").style(container=False)
+                generate = gr.Button(value="Generate").style(rounded=(False, True, True, False))
+
+
+              image_out = gr.Image(height=512)
+              # gallery = gr.Gallery(
+              #     label="Generated images", show_label=False, elem_id="gallery"
+              # ).style(grid=[1], height="auto")
+
+        with gr.Column(scale=45):
+          with gr.Tab("Options"):
+            with gr.Group():
+              neg_prompt = gr.Textbox(label="Negative prompt", placeholder="What to exclude from the image")
+
+              # n_images = gr.Slider(label="Images", value=1, minimum=1, maximum=4, step=1)
+
+              with gr.Row():
+                guidance = gr.Slider(label="Guidance scale", value=7.5, maximum=15)
+                steps = gr.Slider(label="Steps", value=25, minimum=2, maximum=100, step=1)
+
+              with gr.Row():
+                width = gr.Slider(label="Width", value=512, minimum=64, maximum=1024, step=8)
+                height = gr.Slider(label="Height", value=512, minimum=64, maximum=1024, step=8)
+
+              seed = gr.Slider(0, 2147483647, label='Seed (0 = random)', value=0, step=1)
+
+          with gr.Tab("Image to image"):
+              with gr.Group():
+                image = gr.Image(label="Image", height=256, tool="editor", type="pil")
+                strength = gr.Slider(label="Transformation strength", minimum=0, maximum=1, step=0.01, value=0.5)
+
+    # model_name.change(lambda x: gr.update(visible = x == models[0].name), inputs=model_name, outputs=custom_model_group)
+
+    inputs = [model_name, prompt, guidance, steps, width, height, seed, image, strength, neg_prompt]
+    prompt.submit(inference, inputs=inputs, outputs=image_out)
+
+    generate.click(inference, inputs=inputs, outputs=image_out)
+
+
+    gr.Markdown('''
+      Stable-diffusion Models by [CompVis](https://huggingface.co/CompVis) and [stabilityai](https://huggingface.co/stabilityai), Waifu-diffusion models by [@hakurei](https://huggingface.co/hakurei). Most of the code of this demo are copied from [@anzorq's fintuned-diffusion](https://huggingface.co/spaces/anzorq/finetuned_diffusion/tree/main) ❤️<br>
+      Space by [Wenliang Zhao](https://github.com/wl-zhao). 
+        
+      ![visitors](https://visitor-badge.glitch.me/badge?page_id=wl-zhao.unipc_sdm)
+    ''')
+
+demo.queue(concurrency_count=1)
+demo.launch(debug=False, share=False)

requirements.txt

@@ -0,0 +1,6 @@
+torch
+diffusers
+transformers
+scipy
+ftfy
+accelerate