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from fasthtml.common import *
from fasthtml.svg import *
from monsterui.all import *
from pathlib import Path
import requests
import base64
from PIL import Image
import numpy as np
import io
import json
SHOW_DEV_BUTTONS = True
DEMO_DIR = Path(__file__).parent
ADD_DEV_FORM = True
def list_ckpt_files(dir: Path):
"""List all files in the ckpts directory."""
ckpt_dir = dir.absolute()
files = []
if ckpt_dir.exists():
for file_path in ckpt_dir.glob("**/*"):
if file_path.is_file() or file_path.is_symlink():
files.append(str(file_path))
return sorted(files)
print(f'CKPT files: {list_ckpt_files(Path("ckpts"))}')
print(f'Demo assets: {list_ckpt_files(DEMO_DIR / "assets")}')
DEMOS = [
{
"name": "Dog",
"image": DEMO_DIR / "assets" / "dog.jpg",
"mask": DEMO_DIR / "assets" / "dog.json",
"text": "A brown bulldog<m><m><m><m>.",
},
{
"name": "Pickup Truck",
"image": DEMO_DIR / "assets" / "pickup.jpg",
"mask": DEMO_DIR / "assets" / "pickup.json",
"text": "A <m> pickup truck.",
},
{
"name": "Taj Mahal",
"image": DEMO_DIR / "assets" / "tajmahal.jpg",
"mask": DEMO_DIR / "assets" / "tajmahal.json",
"text": "The <m><m><m> in <m>.",
},
{
"name": "Venice",
"image": DEMO_DIR / "assets" / "venice.jpg",
"mask": DEMO_DIR / "assets" / "venice.json",
"text": "A<m> in<m><m><m><m>.",
},
{
"name": "T2I",
"text": "A <m> sits at the counter of an art-deco loungebar, drinking whisky from a tumbler glass.",
}
]
# Use MonsterUI's theme headers.
app, rt = fast_app(hdrs=(Theme.blue.headers(),))
def square_crop(image: Image.Image) -> Image.Image:
width, height = image.size
side = min(width, height)
left = (width - side) // 2
top = (height - side) // 2
right = left + side
bottom = top + side
return image.crop((left, top, right, bottom))
def process(image: Image.Image, desired_resolution: int = 512) -> Image.Image:
cropped_image = square_crop(image.convert("RGB"))
return cropped_image.resize((desired_resolution, desired_resolution), Image.LANCZOS)
def encode_image(file: Path | io.BytesIO | Image.Image) -> Dict[str, str]:
if isinstance(file, Image.Image):
buffered = io.BytesIO()
file.save(buffered, format="JPEG")
base64_str = base64.b64encode(buffered.getvalue()).decode("utf-8")
elif isinstance(file, Path):
with file.open("rb") as img_file:
base64_str = base64.b64encode(img_file.read()).decode("utf-8")
else:
base64_str = base64.b64encode(file.getvalue()).decode("utf-8")
return {"url": f"data:image/jpeg;base64,{base64_str}"}
def encode_array_image(array: np.ndarray) -> Dict[str, str]:
# Handle boolean masks more efficiently
if array.dtype == bool:
array = array.astype(np.uint8) * 255
im = Image.fromarray(array)
buffered = io.BytesIO()
im.save(buffered, format="JPEG", quality=95)
base64_str = base64.b64encode(buffered.getvalue()).decode("utf-8")
return {"url": f"data:image/jpeg;base64,{base64_str}"}
def get_boolean_mask(mask_data: str) -> np.ndarray:
"""Decode compressed mask data from client"""
mask_info = json.loads(mask_data)
data = base64.b64decode(mask_info['data'])
width, height = mask_info['width'], mask_info['height']
arr = np.frombuffer(data, dtype=np.uint8)
bits = np.unpackbits(arr, bitorder='big')[:width * height]
return bits.reshape((height, width)).astype(bool)
def get_input_card_params():
return dict(
header=Div(H4("Input"), Subtitle("You can mask the image, text, or both.")),
id="input-card",
title="Input",
)
def create_input_card_content(text_content=""):
"""Create the shared input card content structure."""
content = [
Div(id="preview-container", cls="relative flex justify-center items-center mb-4 p-4 empty:p-0 empty:mb-0"),
TextArea(text_content, name="user_input", id="user-input-text", cls="resize-none h-12 w-full mb-4"),
Input(type="file", name="uploaded_file", id="upload-image-input", cls="mb-4"),
Input(type="hidden", name="mask_data", id="mask-data")
]
return content
@rt("/")
def get(session):
demo_cards = []
for demo in DEMOS:
if 'image' in demo:
demo_image_url = encode_image(process(Image.open(demo['image'])))['url']
inner_content = Div(
Div(
Loading(cls="hidden", htmx_indicator=True),
id=f"demo-spinner-{DEMOS.index(demo)}",
cls="absolute inset-0 flex items-center justify-center"
),
Div(
Img(src=demo_image_url,
cls="w-32 h-32 object-cover rounded-md transition-opacity hover:opacity-60 cursor-pointer mb-3"),
cls="demo-image-container relative flex justify-center"
),
P(demo['text'],
cls="mt-2 text-sm text-muted-foreground group-hover:text-foreground transition-colors text-center"),
cls="flex flex-col items-center p-1"
)
demo_card = Card(
inner_content,
cls="demo-card hover:shadow-md transition-shadow cursor-pointer w-fit mx-auto",
title=f"{demo['name']}",
hx_post=f"/load_demo/{DEMOS.index(demo)}",
hx_target="#input-card",
hx_swap="innerHTML",
hx_indicator=f"#demo-spinner-{DEMOS.index(demo)}"
)
demo_cards.append(demo_card)
js_script = fr"""
document.body.addEventListener('htmx:beforeRequest', function(ev) {{
const target = ev.detail.elt.querySelector('[hx-indicator]');
if(target) target.querySelector('.loading').classList.remove('hidden');
}});
document.body.addEventListener('htmx:afterRequest', function(ev) {{
const target = ev.detail.elt.querySelector('[hx-indicator]');
if(target) target.querySelector('.loading').classList.add('hidden');
}});
const demoMaskData = {json.dumps(session.get('demo_mask'))} || undefined;
if (typeof demoMaskData !== 'undefined' && demoMaskData !== null) {{
const maskInfo = JSON.parse(demoMaskData);
const data = atob(maskInfo.data);
const arr = new Uint8Array(data.length);
for (let i = 0; i < data.length; i++) {{
arr[i] = data.charCodeAt(i);
}}
const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
for (let i = 0; i < arr.length * 8; i++) {{
const byteIndex = Math.floor(i / 8);
const bitIndex = 7 - (i % 8);
if (arr[byteIndex] & (1 << bitIndex)) {{
const x = i % canvas.width;
const y = Math.floor(i / canvas.width);
imageData.data[(y * canvas.width + x) * 4 + 3] = 255;
}}
}}
ctx.putImageData(imageData, 0, 0);
updateMaskData(canvas);
}}
function downloadMaskData() {{
const maskData = document.getElementById('mask-data').value;
if (!maskData) return;
const blob = new Blob([maskData], {{type: 'application/json'}});
const link = document.createElement('a');
link.href = URL.createObjectURL(blob);
link.download = `mask_${{Date.now()}}.json`;
link.click();
}}
function initializeCanvas(img, wrapper) {{
const DISPLAY_SIZE = 256; // fixed display size in pixels
// Set the preview image to the fixed size
img.style.width = DISPLAY_SIZE + "px";
img.style.height = DISPLAY_SIZE + "px";
const canvas = document.createElement('canvas');
// Use our fixed display size for the canvas dimensions
canvas.width = DISPLAY_SIZE;
canvas.height = DISPLAY_SIZE;
canvas.style.position = 'absolute';
canvas.style.top = '0';
canvas.style.left = '0';
canvas.style.cursor = 'crosshair';
const ctx = canvas.getContext('2d');
// Compute a scale factor relative to the image's natural dimensions
const scaleFactor = DISPLAY_SIZE / Math.max(img.naturalWidth, img.naturalHeight);
ctx.strokeStyle = 'black';
ctx.lineWidth = 35 * scaleFactor; // adjust line width proportionally
let drawing = false;
canvas.addEventListener('mousedown', e => {{
drawing = true;
ctx.beginPath();
ctx.moveTo(e.offsetX, e.offsetY);
}});
canvas.addEventListener('mousemove', e => {{
if (drawing) {{
ctx.lineTo(e.offsetX, e.offsetY);
ctx.stroke();
}}
}});
canvas.addEventListener('mouseup', e => {{
drawing = false;
updateMaskData(canvas);
}});
canvas.addEventListener('mouseleave', e => {{
if (drawing) {{
drawing = false;
updateMaskData(canvas);
}}
}});
wrapper.appendChild(canvas);
return canvas;
}}
function updateMaskData(canvas) {{
const ctx = canvas.getContext('2d');
const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
const data = imageData.data;
const buffer = new Uint8Array(Math.ceil((canvas.width * canvas.height) / 8));
for (let i = 0; i < data.length; i += 4) {{
const pixelIndex = i / 4;
const byteIndex = Math.floor(pixelIndex / 8);
const bitIndex = 7 - (pixelIndex % 8);
if (data[i + 3] > 0) {{
buffer[byteIndex] |= (1 << bitIndex);
}}
}}
const base64 = btoa(String.fromCharCode(...buffer));
document.getElementById('mask-data').value = JSON.stringify({{
data: base64,
width: canvas.width,
height: canvas.height
}});
}}
function clearMask() {{
const canvas = document.querySelector('#preview-container canvas');
if (canvas) {{
const ctx = canvas.getContext('2d');
ctx.clearRect(0, 0, canvas.width, canvas.height);
updateMaskData(canvas);
}}
document.getElementById('mask-data').value = '';
}}
function clearImage() {{
// Clear file input and preview
const fileInput = document.getElementById('upload-image-input');
fileInput.value = ''; // Reset file input
const previewContainer = document.getElementById('preview-container');
previewContainer.innerHTML = ''; // Clear canvas and image
document.getElementById('mask-data').value = ''; // Clear mask data
// If there's a demo image, re-initialize it
const demoImg = {json.dumps(session.get('demo_image', ''))};
if (demoImg) {{
const img = new Image();
img.onload = function() {{
const wrapper = document.createElement('div');
wrapper.style.position = 'relative';
wrapper.style.display = 'inline-block';
initializeCanvas(img, wrapper);
wrapper.appendChild(img);
previewContainer.appendChild(wrapper);
}};
img.src = demoImg;
}}
}}
// Helper function to square crop an image (crop centered)
function squareCropImage(img) {{
const side = Math.min(img.naturalWidth, img.naturalHeight);
const left = (img.naturalWidth - side) / 2;
const top = (img.naturalHeight - side) / 2;
const offCanvas = document.createElement("canvas");
offCanvas.width = side;
offCanvas.height = side;
const offCtx = offCanvas.getContext("2d");
offCtx.drawImage(img, left, top, side, side, 0, 0, side, side);
return offCanvas.toDataURL("image/jpeg");
}}
// Listen for file uploads and square crop the image before previewing
document.getElementById('upload-image-input').addEventListener('change', function(event) {{
const file = event.target.files[0];
if (file) {{
const img = new Image();
img.onload = function() {{
// Square crop the loaded image
const croppedDataUrl = squareCropImage(img);
const croppedImg = new Image();
croppedImg.onload = function() {{
const previewContainer = document.getElementById('preview-container');
previewContainer.innerHTML = '';
const wrapper = document.createElement('div');
wrapper.style.position = 'relative';
wrapper.style.display = 'inline-block';
croppedImg.style.display = 'block';
croppedImg.style.maxWidth = '100%';
initializeCanvas(croppedImg, wrapper);
wrapper.appendChild(croppedImg);
previewContainer.appendChild(wrapper);
}};
croppedImg.src = croppedDataUrl;
}};
img.src = URL.createObjectURL(file);
}}
}});
"""
main_content = Container(
Div(
DivFullySpaced(
Style("""
.top-left {
position: absolute;
top: 3%;
left: 2%;
/* Additional styling as needed */
}
.custom_middle {
position: relative;
top: 0%;
left: 50%;
transform: translate(-50%, 0%);
/* Additional styling as needed */
}
"""),
H1("UniDisc Demo", cls="text-4xl font-light tracking-tight top-left"),
Div(*demo_cards,
cls="grid grid-cols-3 gap-4 max-w-5xl custom_middle"),
cls="flex items-center justify-between mb-8 px-4"
),
Form(
Grid(
Card(
Div(*create_input_card_content()),
**get_input_card_params()
),
Card(
Div(id="output-content", cls="space-y-4"),
header=Div(H4("Output")),
id="output-card",
title="Output"
),
cls="grid grid-cols-2 gap-6 mb-0"
),
CardFooter(
Grid(
Button(
Div(
Span("Submit", cls="submit-text"),
Loading(cls="hidden h-4 w-4 animate-spin", id='loading', htmx_indicator=True),
cls="flex gap-2 items-center justify-center"
),
cls=(ButtonT.primary,'w-full'),
hx_indicator="this .loading"
),
Button("Clear Mask", type="button", cls=(ButtonT.primary,'w-full'), onclick="clearMask()"),
Button("Clear Image", type="button", cls=(ButtonT.primary,'w-full'), onclick="clearImage()"),
*([Button("Download Mask", type="button",
cls=(ButtonT.primary, 'w-full', 'dev-only'),
onclick="downloadMaskData()")] if SHOW_DEV_BUTTONS else []),
Button(
# DivFullySpaced(UkIcon('move-down', 20, 20, 3),"Sampling Configs"),
"Sampling Configs",
uk_toggle="target: #config-modal", id="config-modal-button", cls=(ButtonT.primary, 'w-full')
),
cls="grid grid-cols-4 gap-2"
),
),
Card(
Grid(
Div(
LabelInput("Max Tokens", name="max_tokens", type="number", value=32, cls="w-full"),
cls="space-y-1.5"
),
Div(
LabelSelect(
*Options(256, 512, 1024, selected_idx=1),
name="resolution",
label="Resolution",
cls="w-full",
),
cls="space-y-1.5"
),
Div(
LabelInput("Sampling Steps", name="sampling_steps", type="number", value=32, cls="w-full"),
cls="space-y-1.5"
),
Div(
LabelInput("Top P", name="top_p", type="number", value=0.95, step="0.01", cls="w-full"),
cls="space-y-1.5"
),
Div(
LabelInput("Temperature", name="temperature", type="number", value=0.9, step="0.1", min_value="0.0", max_value="2.0", cls="w-full"),
cls="space-y-1.5"
),
Div(
LabelInput("MaskGit R Temp", name="maskgit_r_temp", type="number", value=4.5, step="0.1", cls="w-full"),
cls="space-y-1.5"
),
Div(
LabelInput("CFG", name="cfg", type="number", value=2.5, step="0.1", cls="w-full"),
cls="space-y-1.5"
),
Div(
LabelSelect(
*Options("maskgit", "maskgit_nucleus", "ddpm_cache", selected_idx=1),
name="sampler",
label="Sampler",
cls="w-full",
),
cls="space-y-1.5"
),
*([
Div(
LabelInput("Port", name="port", type="number", value=8001, step="0.01", cls="w-full"),
cls="space-y-1.5"
),
Div(
LabelSelect(*Options("False", "True", selected_idx=0), name="reward_models",label="Reward Models", cls="w-full",),
cls="space-y-1.5"
)
] if ADD_DEV_FORM else []),
Hidden(name="save_mask_enabled", value="True"),
cls="grid grid-cols-4 gap-4",
),
cls="mb-6",
title="Configuration",
id="config-modal",
hidden=True
),
hx_swap="innerHTML",
hx_target="#output-content",
hx_post="/submit",
enctype="multipart/form-data",
cls="mb-6"
),
),
Script(js_script),
)
return main_content
@rt("/load_demo/{demo_index}")
def post(demo_index: int, session):
demo = DEMOS[demo_index]
if 'image' in demo:
session['demo_image'] = encode_image(process(Image.open(demo['image'])))['url']
if 'text' in demo:
session['demo_text'] = demo['text']
if 'mask' in demo and demo['mask'] and Path(demo['mask']).exists():
session['demo_mask'] = json.loads(Path(demo['mask']).read_text())
else:
session['demo_mask'] = None
content = create_input_card_content(
text_content=session['demo_text'],
)
mask_json = 'undefined' if not session['demo_mask'] else json.dumps(session['demo_mask'])
content.append(Script(fr"""
img = new Image();
img.onload = async function() {{
const previewContainer = document.getElementById('preview-container');
previewContainer.innerHTML = '';
const wrapper = document.createElement('div');
wrapper.style.position = 'relative';
wrapper.style.display = 'inline-block';
const canvas = initializeCanvas(img, wrapper);
const ctx = canvas.getContext('2d');
wrapper.appendChild(img);
previewContainer.appendChild(wrapper);
const dataUrl = {json.dumps(session.get('demo_image', ''))};
const base64Data = dataUrl.split(',')[1];
const byteCharacters = atob(base64Data);
const byteArrays = [];
for (let offset = 0; offset < byteCharacters.length; offset += 1024) {{
const slice = byteCharacters.slice(offset, offset + 1024);
const byteNumbers = new Array(slice.length);
for (let i = 0; i < slice.length; i++) {{
byteNumbers[i] = slice.charCodeAt(i);
}}
const byteArray = new Uint8Array(byteNumbers);
byteArrays.push(byteArray);
}}
const blob = new Blob(byteArrays, {{ type: 'image/jpeg' }});
const file = new File([blob], "demo_image.jpg", {{
type: 'image/jpeg',
lastModified: Date.now()
}});
const dataTransfer = new DataTransfer();
dataTransfer.items.add(file);
const fileInput = document.getElementById('upload-image-input');
fileInput.files = dataTransfer.files;
fileInput.dispatchEvent(new Event('change'));
const demoMaskData = {mask_json};
if (typeof demoMaskData !== 'undefined' && demoMaskData !== null) {{
const maskInfo = demoMaskData;
const data = atob(maskInfo.data);
const arr = new Uint8Array(data.length);
for (let i = 0; i < data.length; i++) {{
arr[i] = data.charCodeAt(i);
}}
const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
for (let i = 0; i < arr.length * 8; i++) {{
const byteIndex = Math.floor(i / 8);
const bitIndex = 7 - (i % 8);
if (arr[byteIndex] & (1 << bitIndex)) {{
const x = i % canvas.width;
const y = Math.floor(i / canvas.width);
imageData.data[(y * canvas.width + x) * 4 + 3] = 255;
}}
}}
ctx.putImageData(imageData, 0, 0);
updateMaskData(canvas);
}}
}};
img.src = {json.dumps(session.get('demo_image', ''))};
"""))
return Card(
Div(*content),
**get_input_card_params()
)
@rt("/submit")
def post(
req,
temperature: float,
top_p: float,
maskgit_r_temp: float,
cfg: float,
max_tokens: int,
resolution: int,
sampling_steps: int,
sampler: str,
user_input: str | None = None,
mask_data: str | None = None,
uploaded_file: UploadFile | None = None,
port: int | None = 8001,
reward_models: str | None = "False"
):
payload_messages = []
if user_input:
payload_messages.append({"role": "user", "content": [{"type": "text", "text": user_input}]})
image_message_content = []
current_image = None
if uploaded_file is not None and uploaded_file.filename != "No image":
current_image = process(Image.open(io.BytesIO(uploaded_file.file.read())), int(resolution))
img_data = encode_image(current_image)["url"]
image_message_content.append({
"type": "image_url",
"image_url": {"url": img_data},
"is_mask": False
})
if mask_data is not None and len(mask_data) > 0:
mask_array = get_boolean_mask(mask_data)
mask_data_url = encode_array_image(mask_array)["url"]
image_message_content.append({
"type": "image_url",
"image_url": {"url": mask_data_url},
"is_mask": True
})
if image_message_content:
payload_messages.append({"role": "assistant", "content": image_message_content})
config_payload = {
"max_tokens": int(max_tokens),
"resolution": int(resolution),
"sampling_steps": int(sampling_steps),
"top_p": float(top_p),
"temperature": float(temperature),
"maskgit_r_temp": float(maskgit_r_temp),
"cfg": float(cfg),
"sampler": sampler,
"use_reward_models": reward_models == "True"
}
payload = {
"messages": payload_messages,
"model": "unidisc",
**config_payload
}
API_URL = f"http://localhost:{port}/v1/chat/completions"
response = requests.post(API_URL, json=payload)
components = []
if response.status_code == 200:
response_json = response.json()
if "choices" in response_json:
content = response_json["choices"][0]["message"]["content"]
if isinstance(content, list):
for part in content:
if part["type"] == "text":
components.append(Card(
P(part["text"], cls="p-4"),
cls="response-card mb-4",
title="Response"
))
elif part["type"] == "image_url":
components.append(
Card(
Div(
Img(
src=part["image_url"]["url"],
cls="w-64 h-64 object-cover rounded-md"
),
cls="flex justify-center items-center p-4"
),
cls="response-card mb-4"
)
)
else:
components.append(Card(P(content, cls="p-4"), cls="response-card mb-4", title="Response"))
else:
components.append(Card(P(f"API Error: {response.text}"), cls="response-card destructive mb-4", title="Error"))
output_content = Div(*components, id="output-content", cls="space-y-4 flex flex-col")
return output_content
print(f"Before serve...")
serve(port=5003) |