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import os
import random
import uuid
import json
import time
import asyncio
import tempfile
from threading import Thread
import base64
import shutil
import re
import gradio as gr
import spaces
import torch
import numpy as np
from PIL import Image
import edge_tts
import trimesh
from transformers import (
AutoModelForCausalLM,
AutoTokenizer,
TextIteratorStreamer,
Qwen2VLForConditionalGeneration,
AutoProcessor,
)
from transformers.image_utils import load_image
from diffusers import StableDiffusionXLPipeline, EulerAncestralDiscreteScheduler
from diffusers import ShapEImg2ImgPipeline, ShapEPipeline
from diffusers.utils import export_to_ply
# Global constants and helper functions
MAX_SEED = np.iinfo(np.int32).max
def randomize_seed_fn(seed: int, randomize_seed: bool) -> int:
if randomize_seed:
seed = random.randint(0, MAX_SEED)
return seed
def glb_to_data_url(glb_path: str) -> str:
"""
Reads a GLB file from disk and returns a data URL with a base64 encoded representation.
(Not used in this method.)
"""
with open(glb_path, "rb") as f:
data = f.read()
b64_data = base64.b64encode(data).decode("utf-8")
return f"data:model/gltf-binary;base64,{b64_data}"
# Model class for Text-to-3D Generation (ShapE)
class Model:
def __init__(self):
self.device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
self.pipe = ShapEPipeline.from_pretrained("openai/shap-e", torch_dtype=torch.float16)
self.pipe.to(self.device)
# Ensure the text encoder is in half precision to avoid dtype mismatches.
if torch.cuda.is_available():
try:
self.pipe.text_encoder = self.pipe.text_encoder.half()
except AttributeError:
pass
self.pipe_img = ShapEImg2ImgPipeline.from_pretrained("openai/shap-e-img2img", torch_dtype=torch.float16)
self.pipe_img.to(self.device)
# Use getattr with a default value to avoid AttributeError if text_encoder is missing.
if torch.cuda.is_available():
text_encoder_img = getattr(self.pipe_img, "text_encoder", None)
if text_encoder_img is not None:
self.pipe_img.text_encoder = text_encoder_img.half()
def to_glb(self, ply_path: str) -> str:
mesh = trimesh.load(ply_path)
# Rotate the mesh for proper orientation
rot = trimesh.transformations.rotation_matrix(-np.pi / 2, [1, 0, 0])
mesh.apply_transform(rot)
rot = trimesh.transformations.rotation_matrix(np.pi, [0, 1, 0])
mesh.apply_transform(rot)
mesh_path = tempfile.NamedTemporaryFile(suffix=".glb", delete=False)
mesh.export(mesh_path.name, file_type="glb")
return mesh_path.name
def run_text(self, prompt: str, seed: int = 0, guidance_scale: float = 15.0, num_steps: int = 64) -> str:
generator = torch.Generator(device=self.device).manual_seed(seed)
images = self.pipe(
prompt,
generator=generator,
guidance_scale=guidance_scale,
num_inference_steps=num_steps,
output_type="mesh",
).images
ply_path = tempfile.NamedTemporaryFile(suffix=".ply", delete=False, mode="w+b")
export_to_ply(images[0], ply_path.name)
return self.to_glb(ply_path.name)
def run_image(self, image: Image.Image, seed: int = 0, guidance_scale: float = 3.0, num_steps: int = 64) -> str:
generator = torch.Generator(device=self.device).manual_seed(seed)
images = self.pipe_img(
image,
generator=generator,
guidance_scale=guidance_scale,
num_inference_steps=num_steps,
output_type="mesh",
).images
ply_path = tempfile.NamedTemporaryFile(suffix=".ply", delete=False, mode="w+b")
export_to_ply(images[0], ply_path.name)
return self.to_glb(ply_path.name)
# New Tools for Web Functionality using DuckDuckGo and smolagents
from typing import Any, Optional
from smolagents.tools import Tool
import duckduckgo_search
class DuckDuckGoSearchTool(Tool):
name = "web_search"
description = "Performs a duckduckgo web search based on your query (think a Google search) then returns the top search results."
inputs = {'query': {'type': 'string', 'description': 'The search query to perform.'}}
output_type = "string"
def __init__(self, max_results=10, **kwargs):
super().__init__()
self.max_results = max_results
try:
from duckduckgo_search import DDGS
except ImportError as e:
raise ImportError(
"You must install package `duckduckgo_search` to run this tool: for instance run `pip install duckduckgo-search`."
) from e
self.ddgs = DDGS(**kwargs)
def forward(self, query: str) -> str:
results = self.ddgs.text(query, max_results=self.max_results)
if len(results) == 0:
raise Exception("No results found! Try a less restrictive/shorter query.")
postprocessed_results = [
f"[{result['title']}]({result['href']})\n{result['body']}" for result in results
]
return "## Search Results\n\n" + "\n\n".join(postprocessed_results)
class VisitWebpageTool(Tool):
name = "visit_webpage"
description = "Visits a webpage at the given url and reads its content as a markdown string. Use this to browse webpages."
inputs = {'url': {'type': 'string', 'description': 'The url of the webpage to visit.'}}
output_type = "string"
def __init__(self, *args, **kwargs):
self.is_initialized = False
def forward(self, url: str) -> str:
try:
import requests
from markdownify import markdownify
from requests.exceptions import RequestException
from smolagents.utils import truncate_content
except ImportError as e:
raise ImportError(
"You must install packages `markdownify` and `requests` to run this tool: for instance run `pip install markdownify requests`."
) from e
try:
# Send a GET request to the URL with a 20-second timeout
response = requests.get(url, timeout=20)
response.raise_for_status() # Raise an exception for bad status codes
# Convert the HTML content to Markdown
markdown_content = markdownify(response.text).strip()
# Remove multiple line breaks
markdown_content = re.sub(r"\n{3,}", "\n\n", markdown_content)
return truncate_content(markdown_content, 10000)
except requests.exceptions.Timeout:
return "The request timed out. Please try again later or check the URL."
except RequestException as e:
return f"Error fetching the webpage: {str(e)}"
except Exception as e:
return f"An unexpected error occurred: {str(e)}"
# rAgent Reasoning using Llama mode OpenAI
from openai import OpenAI
ACCESS_TOKEN = os.getenv("HF_TOKEN")
ragent_client = OpenAI(
base_url="https://api-inference.huggingface.co/v1/",
api_key=ACCESS_TOKEN,
)
SYSTEM_PROMPT = """
"You are an expert assistant who solves tasks using Python code. Follow these steps:\n"
"1. **Thought**: Explain your reasoning and plan for solving the task.\n"
"2. **Code**: Write Python code to implement your solution.\n"
"3. **Observation**: Analyze the output of the code and summarize the results.\n"
"4. **Final Answer**: Provide a concise conclusion or final result.\n\n"
f"Task: {task}"
"""
def ragent_reasoning(prompt: str, history: list[dict], max_tokens: int = 1024, temperature: float = 0.7, top_p: float = 0.95):
"""
Uses the Llama mode OpenAI model to perform a structured reasoning chain.
"""
messages = [{"role": "system", "content": SYSTEM_PROMPT}]
# Incorporate conversation history (if any)
for msg in history:
if msg.get("role") == "user":
messages.append({"role": "user", "content": msg["content"]})
elif msg.get("role") == "assistant":
messages.append({"role": "assistant", "content": msg["content"]})
messages.append({"role": "user", "content": prompt})
response = ""
stream = ragent_client.chat.completions.create(
model="meta-llama/Meta-Llama-3.1-8B-Instruct",
max_tokens=max_tokens,
stream=True,
temperature=temperature,
top_p=top_p,
messages=messages,
)
for message in stream:
token = message.choices[0].delta.content
response += token
yield response
# Gradio UI configuration
DESCRIPTION = """
# Agent Dino π """
css = '''
h1 {
text-align: center;
display: block;
}
#duplicate-button {
margin: auto;
color: #fff;
background: #1565c0;
border-radius: 100vh;
}
'''
MAX_MAX_NEW_TOKENS = 2048
DEFAULT_MAX_NEW_TOKENS = 1024
MAX_INPUT_TOKEN_LENGTH = int(os.getenv("MAX_INPUT_TOKEN_LENGTH", "4096"))
device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu")
# Load Models and Pipelines for Chat, Image, and Multimodal Processing
# Load the text-only model and tokenizer (for pure text chat)
model_id = "prithivMLmods/FastThink-0.5B-Tiny"
tokenizer = AutoTokenizer.from_pretrained(model_id)
model = AutoModelForCausalLM.from_pretrained(
model_id,
device_map="auto",
torch_dtype=torch.bfloat16,
)
model.eval()
# Voices for text-to-speech
TTS_VOICES = [
"en-US-JennyNeural", # @tts1
"en-US-GuyNeural", # @tts2
]
# Load multimodal processor and model (e.g. for OCR and image processing)
MODEL_ID = "prithivMLmods/Qwen2-VL-OCR-2B-Instruct"
processor = AutoProcessor.from_pretrained(MODEL_ID, trust_remote_code=True)
model_m = Qwen2VLForConditionalGeneration.from_pretrained(
MODEL_ID,
trust_remote_code=True,
torch_dtype=torch.float16
).to("cuda").eval()
# Asynchronous text-to-speech
async def text_to_speech(text: str, voice: str, output_file="output.mp3"):
"""Convert text to speech using Edge TTS and save as MP3"""
communicate = edge_tts.Communicate(text, voice)
await communicate.save(output_file)
return output_file
# Utility function to clean conversation history
def clean_chat_history(chat_history):
"""
Filter out any chat entries whose "content" is not a string.
This helps prevent errors when concatenating previous messages.
"""
cleaned = []
for msg in chat_history:
if isinstance(msg, dict) and isinstance(msg.get("content"), str):
cleaned.append(msg)
return cleaned
# Stable Diffusion XL Pipeline for Image Generation
MODEL_ID_SD = os.getenv("MODEL_VAL_PATH") # SDXL Model repository path via env variable
MAX_IMAGE_SIZE = int(os.getenv("MAX_IMAGE_SIZE", "4096"))
USE_TORCH_COMPILE = os.getenv("USE_TORCH_COMPILE", "0") == "1"
ENABLE_CPU_OFFLOAD = os.getenv("ENABLE_CPU_OFFLOAD", "0") == "1"
BATCH_SIZE = int(os.getenv("BATCH_SIZE", "1")) # For batched image generation
sd_pipe = StableDiffusionXLPipeline.from_pretrained(
MODEL_ID_SD,
torch_dtype=torch.float16 if torch.cuda.is_available() else torch.float32,
use_safetensors=True,
add_watermarker=False,
).to(device)
sd_pipe.scheduler = EulerAncestralDiscreteScheduler.from_config(sd_pipe.scheduler.config)
if torch.cuda.is_available():
sd_pipe.text_encoder = sd_pipe.text_encoder.half()
if USE_TORCH_COMPILE:
sd_pipe.compile()
if ENABLE_CPU_OFFLOAD:
sd_pipe.enable_model_cpu_offload()
def save_image(img: Image.Image) -> str:
"""Save a PIL image with a unique filename and return the path."""
unique_name = str(uuid.uuid4()) + ".png"
img.save(unique_name)
return unique_name
@spaces.GPU(duration=60, enable_queue=True)
def generate_image_fn(
prompt: str,
negative_prompt: str = "",
use_negative_prompt: bool = False,
seed: int = 1,
width: int = 1024,
height: int = 1024,
guidance_scale: float = 3,
num_inference_steps: int = 25,
randomize_seed: bool = False,
use_resolution_binning: bool = True,
num_images: int = 1,
progress=gr.Progress(track_tqdm=True),
):
"""Generate images using the SDXL pipeline."""
seed = int(randomize_seed_fn(seed, randomize_seed))
generator = torch.Generator(device=device).manual_seed(seed)
options = {
"prompt": [prompt] * num_images,
"negative_prompt": [negative_prompt] * num_images if use_negative_prompt else None,
"width": width,
"height": height,
"guidance_scale": guidance_scale,
"num_inference_steps": num_inference_steps,
"generator": generator,
"output_type": "pil",
}
if use_resolution_binning:
options["use_resolution_binning"] = True
images = []
# Process in batches
for i in range(0, num_images, BATCH_SIZE):
batch_options = options.copy()
batch_options["prompt"] = options["prompt"][i:i+BATCH_SIZE]
if "negative_prompt" in batch_options and batch_options["negative_prompt"] is not None:
batch_options["negative_prompt"] = options["negative_prompt"][i:i+BATCH_SIZE]
if device.type == "cuda":
with torch.autocast("cuda", dtype=torch.float16):
outputs = sd_pipe(**batch_options)
else:
outputs = sd_pipe(**batch_options)
images.extend(outputs.images)
image_paths = [save_image(img) for img in images]
return image_paths, seed
# Text-to-3D Generation using the ShapE Pipeline
@spaces.GPU(duration=120, enable_queue=True)
def generate_3d_fn(
prompt: str,
seed: int = 1,
guidance_scale: float = 15.0,
num_steps: int = 64,
randomize_seed: bool = False,
):
"""
Generate a 3D model from text using the ShapE pipeline.
Returns a tuple of (glb_file_path, used_seed).
"""
seed = int(randomize_seed_fn(seed, randomize_seed))
model3d = Model()
glb_path = model3d.run_text(prompt, seed=seed, guidance_scale=guidance_scale, num_steps=num_steps)
return glb_path, seed
# Chat Generation Function with support for @tts, @image, @3d, @web, and @rAgent commands
@spaces.GPU
def generate(
input_dict: dict,
chat_history: list[dict],
max_new_tokens: int = 1024,
temperature: float = 0.6,
top_p: float = 0.9,
top_k: int = 50,
repetition_penalty: float = 1.2,
):
"""
Generates chatbot responses with support for multimodal input and special commands:
- "@tts1" or "@tts2": triggers text-to-speech.
- "@image": triggers image generation using the SDXL pipeline.
- "@3d": triggers 3D model generation using the ShapE pipeline.
- "@web": triggers a web search or webpage visit.
- "@rAgent": initiates a reasoning chain using Llama mode OpenAI.
"""
text = input_dict["text"]
files = input_dict.get("files", [])
# --- 3D Generation branch ---
if text.strip().lower().startswith("@3d"):
prompt = text[len("@3d"):].strip()
yield "π Hold tight, generating a 3D mesh GLB file....."
glb_path, used_seed = generate_3d_fn(
prompt=prompt,
seed=1,
guidance_scale=15.0,
num_steps=64,
randomize_seed=True,
)
# Copy the GLB file to a static folder.
static_folder = os.path.join(os.getcwd(), "static")
if not os.path.exists(static_folder):
os.makedirs(static_folder)
new_filename = f"mesh_{uuid.uuid4()}.glb"
new_filepath = os.path.join(static_folder, new_filename)
shutil.copy(glb_path, new_filepath)
yield gr.File(new_filepath)
return
# --- Image Generation branch ---
if text.strip().lower().startswith("@image"):
prompt = text[len("@image"):].strip()
yield "πͺ§ Generating image..."
image_paths, used_seed = generate_image_fn(
prompt=prompt,
negative_prompt="",
use_negative_prompt=False,
seed=1,
width=1024,
height=1024,
guidance_scale=3,
num_inference_steps=25,
randomize_seed=True,
use_resolution_binning=True,
num_images=1,
)
yield gr.Image(image_paths[0])
return
# --- Web Search/Visit branch ---
if text.strip().lower().startswith("@web"):
web_command = text[len("@web"):].strip()
# If the command starts with "visit", then treat the rest as a URL
if web_command.lower().startswith("visit"):
url = web_command[len("visit"):].strip()
yield "π Visiting webpage..."
visitor = VisitWebpageTool()
content = visitor.forward(url)
yield content
else:
# Otherwise, treat the rest as a search query.
query = web_command
yield "𧀠Performing a web search ..."
searcher = DuckDuckGoSearchTool()
results = searcher.forward(query)
yield results
return
# --- rAgent Reasoning branch ---
if text.strip().lower().startswith("@ragent"):
prompt = text[len("@ragent"):].strip()
yield "π Initiating reasoning chain using Llama mode..."
# Pass the current chat history (cleaned) to help inform the chain.
for partial in ragent_reasoning(prompt, clean_chat_history(chat_history)):
yield partial
return
# --- Text and TTS branch ---
tts_prefix = "@tts"
is_tts = any(text.strip().lower().startswith(f"{tts_prefix}{i}") for i in range(1, 3))
voice_index = next((i for i in range(1, 3) if text.strip().lower().startswith(f"{tts_prefix}{i}")), None)
if is_tts and voice_index:
voice = TTS_VOICES[voice_index - 1]
text = text.replace(f"{tts_prefix}{voice_index}", "").strip()
conversation = [{"role": "user", "content": text}]
else:
voice = None
text = text.replace(tts_prefix, "").strip()
conversation = clean_chat_history(chat_history)
conversation.append({"role": "user", "content": text})
if files:
if len(files) > 1:
images = [load_image(image) for image in files]
elif len(files) == 1:
images = [load_image(files[0])]
else:
images = []
messages = [{
"role": "user",
"content": [
*[{"type": "image", "image": image} for image in images],
{"type": "text", "text": text},
]
}]
prompt = processor.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
inputs = processor(text=[prompt], images=images, return_tensors="pt", padding=True).to("cuda")
streamer = TextIteratorStreamer(processor, skip_prompt=True, skip_special_tokens=True)
generation_kwargs = {**inputs, "streamer": streamer, "max_new_tokens": max_new_tokens}
thread = Thread(target=model_m.generate, kwargs=generation_kwargs)
thread.start()
buffer = ""
yield "π€ Thinking..."
for new_text in streamer:
buffer += new_text
buffer = buffer.replace("<|im_end|>", "")
time.sleep(0.01)
yield buffer
else:
input_ids = tokenizer.apply_chat_template(conversation, add_generation_prompt=True, return_tensors="pt")
if input_ids.shape[1] > MAX_INPUT_TOKEN_LENGTH:
input_ids = input_ids[:, -MAX_INPUT_TOKEN_LENGTH:]
gr.Warning(f"Trimmed input from conversation as it was longer than {MAX_INPUT_TOKEN_LENGTH} tokens.")
input_ids = input_ids.to(model.device)
streamer = TextIteratorStreamer(tokenizer, timeout=20.0, skip_prompt=True, skip_special_tokens=True)
generation_kwargs = {
"input_ids": input_ids,
"streamer": streamer,
"max_new_tokens": max_new_tokens,
"do_sample": True,
"top_p": top_p,
"top_k": top_k,
"temperature": temperature,
"num_beams": 1,
"repetition_penalty": repetition_penalty,
}
t = Thread(target=model.generate, kwargs=generation_kwargs)
t.start()
outputs = []
for new_text in streamer:
outputs.append(new_text)
yield "".join(outputs)
final_response = "".join(outputs)
yield final_response
if is_tts and voice:
output_file = asyncio.run(text_to_speech(final_response, voice))
yield gr.Audio(output_file, autoplay=True)
# Gradio Chat Interface Setup and Launch
demo = gr.ChatInterface(
fn=generate,
additional_inputs=[
gr.Slider(label="Max new tokens", minimum=1, maximum=MAX_MAX_NEW_TOKENS, step=1, value=DEFAULT_MAX_NEW_TOKENS),
gr.Slider(label="Temperature", minimum=0.1, maximum=4.0, step=0.1, value=0.6),
gr.Slider(label="Top-p (nucleus sampling)", minimum=0.05, maximum=1.0, step=0.05, value=0.9),
gr.Slider(label="Top-k", minimum=1, maximum=1000, step=1, value=50),
gr.Slider(label="Repetition penalty", minimum=1.0, maximum=2.0, step=0.05, value=1.2),
],
examples=[
["@tts2 What causes rainbows to form?"],
["@3d A birthday cupcake with cherry"],
[{"text": "summarize the letter", "files": ["examples/1.png"]}],
["@image Chocolate dripping from a donut against a yellow background, in the style of brocore, hyper-realistic"],
["@rAgent Explain how a binary search algorithm works."],
["@web Is Grok-3 Beats DeepSeek-R1 at Reasoning ?"],
],
cache_examples=False,
type="messages",
description=DESCRIPTION,
css=css,
fill_height=True,
textbox=gr.MultimodalTextbox(label="Query Input", file_types=["image"], file_count="multiple", placeholder="@tts1-β, @tts2-β, @image-image gen, @3d-3d mesh gen, @rAgent-coding, @web-websearch, default-{text gen}{image-text-text}"),
stop_btn="Stop Generation",
multimodal=True,
)
# Ensure the static folder exists
if not os.path.exists("static"):
os.makedirs("static")
from fastapi.staticfiles import StaticFiles
demo.app.mount("/static", StaticFiles(directory="static"), name="static")
if __name__ == "__main__":
demo.queue(max_size=20).launch(share=True) |