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from flask import Flask, request, jsonify, send_file, render_template_string
import requests
import io
import os
import random
from PIL import Image
from deep_translator import GoogleTranslator
app = Flask(__name__)
API_URL = "https://api-inference.huggingface.co/models/black-forest-labs/FLUX.1-dev"
API_TOKEN = os.getenv("HF_READ_TOKEN")
headers = {"Authorization": f"Bearer {API_TOKEN}"}
timeout = 300 # タイムアウトを300秒に設定
# Function to query the API and return the generated image
def query(prompt, negative_prompt="", steps=35, cfg_scale=7, sampler="DPM++ 2M Karras", seed=-1, strength=0.7, width=1024, height=1024):
if not prompt:
return None, "Prompt is required"
key = random.randint(0, 999)
# Translate the prompt from Russian to English if necessary
prompt = GoogleTranslator(source='ru', target='en').translate(prompt)
print(f'Generation {key} translation: {prompt}')
# Add some extra flair to the prompt
prompt = f"{prompt} | ultra detail, ultra elaboration, ultra quality, perfect."
print(f'Generation {key}: {prompt}')
payload = {
"inputs": prompt,
"is_negative": False,
"steps": steps,
"cfg_scale": cfg_scale,
"seed": seed if seed != -1 else random.randint(1, 1000000000),
"strength": strength,
"parameters": {
"width": width,
"height": height
}
}
for attempt in range(3): # 最大3回の再試行
try:
response = requests.post(API_URL, headers=headers, json=payload, timeout=timeout)
if response.status_code != 200:
return None, f"Error: Failed to get image. Status code: {response.status_code}, Details: {response.text}"
image_bytes = response.content
image = Image.open(io.BytesIO(image_bytes))
return image, None
except requests.exceptions.Timeout:
if attempt < 2: # 最後の試行でない場合は再試行
print("Timeout occurred, retrying...")
continue
return None, "Error: The request timed out. Please try again."
except requests.exceptions.RequestException as e:
return None, f"Request Exception: {str(e)}"
except Exception as e:
return None, f"Error when trying to open the image: {e}"
# HTML template for the index page
index_html = """
<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>FLUX.1-Dev Image Generator</title>
<script>
async function generateImage() {
const prompt = document.getElementById("prompt").value;
const negative_prompt = document.getElementById("negative_prompt").value;
const width = document.getElementById("width").value;
const height = document.getElementById("height").value;
const steps = document.getElementById("steps").value;
const cfgs = document.getElementById("cfgs").value;
const sampler = document.getElementById("sampler").value;
const strength = document.getElementById("strength").value;
const seed = document.getElementById("seed").value;
const button = document.getElementById("generate-button");
button.disabled = true; // ボタンを無効化
const params = new URLSearchParams({
prompt,
negative_prompt,
width,
height,
steps,
cfgs,
sampler,
strength,
seed
});
try {
const response = await fetch(`/generate?${params.toString()}`);
if (!response.ok) {
throw new Error('画像生成に失敗しました');
}
const imageBlob = await response.blob();
// Convert Blob to Data URL
const reader = new FileReader();
reader.onloadend = function () {
const img = document.getElementById("generated-image");
img.src = reader.result; // dataURLを設定
img.style.display = 'block'; // 画像を表示
};
reader.readAsDataURL(imageBlob);
} catch (error) {
alert(error.message);
} finally {
button.disabled = false; // ボタンを再有効化
}
}
</script>
</head>
<body>
<h1>FLUX.1-Dev Image Generator</h1>
<form onsubmit="event.preventDefault(); generateImage();">
<label for="prompt">Prompt:</label>
<input type="text" id="prompt" name="prompt" placeholder="Enter your prompt" required><br><br>
<label for="negative_prompt">Negative Prompt:</label>
<input type="text" id="negative_prompt" name="negative_prompt" value="(deformed, distorted, disfigured), poorly drawn, bad anatomy, wrong anatomy, extra limb, missing limb, floating limbs, (mutated hands and fingers), disconnected limbs, mutation, mutated, ugly, disgusting, blurry, amputation, misspellings, typos"><br><br>
<label for="width">Width:</label>
<input type="number" id="width" name="width" value="1024"><br><br>
<label for="height">Height:</label>
<input type="number" id="height" name="height" value="1024"><br><br>
<label for="steps">Sampling Steps:</label>
<input type="number" id="steps" name="steps" value="35"><br><br>
<label for="cfgs">CFG Scale:</label>
<input type="number" id="cfgs" name="cfgs" value="7"><br><br>
<label for="sampler">Sampling Method:</label>
<select id="sampler" name="sampler">
<option value="DPM++ 2M Karras">DPM++ 2M Karras</option>
<option value="DPM++ SDE Karras">DPM++ SDE Karras</option>
<option value="Euler">Euler</option>
<option value="Euler a">Euler a</option>
<option value="Heun">Heun</option>
<option value="DDIM">DDIM</option>
</select><br><br>
<label for="strength">Strength:</label>
<input type="number" id="strength" name="strength" value="0.7" step="0.01" min="0" max="1"><br><br>
<label for="seed">Seed:</label>
<input type="number" id="seed" name="seed" value="-1" step="1"><br><br>
<button type="submit" id="generate-button">Generate Image</button>
</form>
<h2>Generated Image:</h2>
<img id="generated-image" src="" alt="Generated Image" style="max-width: 100%; height: auto; display: none;">
</body>
</html>
"""
@app.route('/')
def index():
return render_template_string(index_html)
@app.route('/generate', methods=['GET'])
def generate_image():
# Retrieve query parameters
prompt = request.args.get("prompt", "")
negative_prompt = request.args.get("negative_prompt", "")
steps = int(request.args.get("steps", 35))
cfg_scale = float(request.args.get("cfgs", 7))
sampler = request.args.get("sampler", "DPM++ 2M Karras")
seed = int(request.args.get("seed", -1))
strength = float(request.args.get("strength", 0.7))
width = int(request.args.get("width", 1024))
height = int(request.args.get("height", 1024))
# Call the query function to generate the image
image, error = query(prompt, negative_prompt, steps, cfg_scale, sampler, seed, strength, width, height)
if error:
return jsonify({"error": error}), 500
# Save the image to a buffer
img_io = io.BytesIO()
image.save(img_io, 'PNG')
img_io.seek(0)
# Return the image directly
return send_file(img_io, mimetype='image/png')
if __name__ == '__main__':
app.run(host='0.0.0.0', port=7860)
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