app.py

# import gradio as gr
# from transformers import Qwen2_5_VLForConditionalGeneration, AutoProcessor, TextIteratorStreamer
# from threading import Thread
# from qwen_vl_utils import process_vision_info
# import torch
# import time

# # Check if a GPU is available
# device = "cuda" if torch.cuda.is_available() else "cpu"

# local_path = "Fancy-MLLM/R1-OneVision-7B"

# # Load the model on the appropriate device (GPU if available, otherwise CPU)
# model = Qwen2_5_VLForConditionalGeneration.from_pretrained(
#     local_path, torch_dtype="auto", device_map=device
# )
# processor = AutoProcessor.from_pretrained(local_path)

# def generate_output(image, text, button_click):
#     # Prepare input data
#     messages = [
#         {
#             "role": "user",
#             "content": [
#                 {"type": "image", "image": image, 'min_pixels': 1003520, 'max_pixels': 12845056},
#                 {"type": "text", "text": text},
#             ],
#         }
#     ]
    
#     # Prepare inputs for the model
#     text_input = processor.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
#     image_inputs, video_inputs = process_vision_info(messages)
#     inputs = processor(
#         text=[text_input],
#         images=image_inputs,
#         videos=video_inputs,
#         padding=True,
#         return_tensors="pt",
#     )
    
#     # Move inputs to the same device as the model
#     inputs = inputs.to(model.device)

#     streamer = TextIteratorStreamer(processor, skip_prompt=True, skip_special_tokens=True)
#     generation_kwargs = dict(
#         **inputs,
#         streamer=streamer,
#         max_new_tokens=4096,
#         top_p=0.001,
#         top_k=1,
#         temperature=0.01,
#         repetition_penalty=1.0,
#     )
    
#     thread = Thread(target=model.generate, kwargs=generation_kwargs)
#     thread.start()
#     generated_text = ''
    
#     try:
#         for new_text in streamer:
#             generated_text += new_text
#             yield f"‎{generated_text}"
#     except Exception as e:
#         print(f"Error: {e}")
#         yield f"Error occurred: {str(e)}"

# Css = """
# #output-markdown {
#     overflow-y: auto;
#     white-space: pre-wrap; 
#     word-wrap: break-word;
# }
# #output-markdown .math {
#     overflow-x: auto;
#     max-width: 100%;
# }
# .markdown-text {
#     white-space: pre-wrap;
#     word-wrap: break-word;
# }
# .markdown-output {
#     min-height: 20vh;
#     max-width: 100%;
#     overflow-y: auto;
# }
# #qwen-md .katex-display { display: inline; }
# #qwen-md .katex-display>.katex { display: inline; }
# #qwen-md .katex-display>.katex>.katex-html { display: inline; }
# """

# with gr.Blocks(css=Css) as demo:
#     gr.HTML("""<center><font size=8>🦖 R1-OneVision Demo</center>""")

#     with gr.Row():
#         with gr.Column():
#             input_image = gr.Image(type="pil", label="Upload")  # **改回 PIL 处理**
#             input_text = gr.Textbox(label="Input your question")
#             with gr.Row():
#                 clear_btn = gr.ClearButton([input_image, input_text])
#                 submit_btn = gr.Button("Submit", variant="primary")

#         with gr.Column():
#             output_text = gr.Markdown(elem_id="qwen-md", container=True, elem_classes="markdown-output")

#     submit_btn.click(fn=generate_output, inputs=[input_image, input_text], outputs=output_text)

# demo.launch(share=False)


# import gradio as gr
# from transformers import AutoProcessor, Qwen2_5_VLForConditionalGeneration, TextIteratorStreamer
# from transformers.image_utils import load_image
# from threading import Thread
# import time
# import torch
# import spaces

# MODEL_ID = "Qwen/Qwen2.5-VL-7B-Instruct"
# processor = AutoProcessor.from_pretrained(MODEL_ID, trust_remote_code=True)
# model = Qwen2_5_VLForConditionalGeneration.from_pretrained(
#     MODEL_ID,
#     trust_remote_code=True,
#     torch_dtype=torch.bfloat16
# ).to("cuda").eval()

# @spaces.GPU(duration=200)
# def model_inference(input_dict, history):
#     text = input_dict["text"]
#     files = input_dict["files"]

#     # Load images if provided
#     if len(files) > 1:
#         images = [load_image(image) for image in files]
#     elif len(files) == 1:
#         images = [load_image(files[0])]
#     else:
#         images = []

#     # Validate input
#     if text == "" and not images:
#         gr.Error("Please input a query and optionally image(s).")
#         return
#     if text == "" and images:
#         gr.Error("Please input a text query along with the image(s).")
#         return

#     # Prepare messages for the model
#     messages = [
#         {
#             "role": "user",
#             "content": [
#                 *[{"type": "image", "image": image} for image in images],
#                 {"type": "text", "text": text},
#             ],
#         }
#     ]

#     # Apply chat template and process inputs
#     prompt = processor.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
#     inputs = processor(
#         text=[prompt],
#         images=images if images else None,
#         return_tensors="pt",
#         padding=True,
#     ).to("cuda")

#     # Set up streamer for real-time output
#     streamer = TextIteratorStreamer(processor, skip_prompt=True, skip_special_tokens=True)
#     generation_kwargs = dict(inputs, streamer=streamer, max_new_tokens=2048)

#     # Start generation in a separate thread
#     thread = Thread(target=model.generate, kwargs=generation_kwargs)
#     thread.start()

#     # Stream the output
#     buffer = ""
#     yield "Thinking..."
#     for new_text in streamer:
#         buffer += new_text
#         time.sleep(0.01)
#         yield buffer

# examples = [
#     [{"text": "Hint: Please answer the question and provide the final answer at the end. Question: Which number do you have to write in the last daisy?", "files": ["5.jpg"]}]
# ]

# demo = gr.ChatInterface(
#     fn=model_inference,
#     description="# **🦖 Fancy-MLLM/R1-OneVision-7B**",
#     examples=examples,
#     textbox=gr.MultimodalTextbox(label="Query Input", file_types=["image"], file_count="multiple"),
#     stop_btn="Stop Generation",
#     multimodal=True,
#     cache_examples=False,
# )

# demo.launch(debug=True)

import gradio as gr
from transformers import AutoProcessor, Qwen2_5_VLForConditionalGeneration, TextIteratorStreamer
from transformers.image_utils import load_image
from threading import Thread
import time
import torch

# 加载模型和处理器
MODEL_ID = "Fancy-MLLM/R1-OneVision-7B"
processor = AutoProcessor.from_pretrained(MODEL_ID, trust_remote_code=True)
model = Qwen2_5_VLForConditionalGeneration.from_pretrained(
    MODEL_ID,
    trust_remote_code=True,
    torch_dtype=torch.bfloat16
).to("cuda").eval()

def model_inference(input_dict, history):
    text = input_dict["text"]
    files = input_dict["files"]

    # 加载图片（如果提供）
    if len(files) > 1:
        images = [load_image(image) for image in files]
    elif len(files) == 1:
        images = [load_image(files[0])]
    else:
        images = []

    # 输入验证
    if text == "" and not images:
        return gr.Error("Please input a query and optionally image(s).")
    if text == "" and images:
        return gr.Error("Please input a text query along with the image(s).")

    # 准备输入消息
    messages = [
        {
            "role": "user",
            "content": [
                *[{"type": "image", "image": image} for image in images],
                {"type": "text", "text": text},
            ],
        }
    ]

    # 使用处理器准备输入
    prompt = processor.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
    inputs = processor(
        text=[prompt],
        images=images if images else None,
        return_tensors="pt",
        padding=True,
    ).to("cuda")

    # 设置最大输出token数以控制推理时间
    max_new_tokens = 1024  # 可以根据实际需要调整

    # 创建流式输出
    streamer = TextIteratorStreamer(processor, skip_prompt=True, skip_special_tokens=True)
    generation_kwargs = dict(inputs, streamer=streamer, max_new_tokens=max_new_tokens)

    # 使用后台线程执行推理
    def run_inference():
        model.generate(**generation_kwargs)

    thread = Thread(target=run_inference)
    thread.start()

    # 生成过程中更新UI
    buffer = ""
    yield "Processing your request, please wait..."
    for new_text in streamer:
        buffer += new_text
        time.sleep(0.01)  # 给UI流畅更新的时间
        yield buffer

# 示例输入
examples = [
    [{"text": "Hint: Please answer the question and provide the final answer at the end. Question: Which number do you have to write in the last daisy?", "files": ["5.jpg"]}]
]

# 创建Gradio界面
demo = gr.Interface(
    fn=model_inference,
    description="# **🦖 Fancy-MLLM/R1-OneVision-7B**",
    examples=examples,
    inputs=gr.Chatbox(),
    outputs=gr.Textbox(),
    live=True,
    allow_flagging="never",
    layout="vertical",
    title="Multimodal Inference with Fancy-MLLM",
    cache_examples=False,
)

demo.launch(debug=True)