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| import spaces | |
| import os | |
| import re | |
| import traceback | |
| import torch | |
| import gradio as gr | |
| import sys | |
| import numpy as np | |
| from longvu.builder import load_pretrained_model | |
| from longvu.constants import ( | |
| DEFAULT_IMAGE_TOKEN, | |
| IMAGE_TOKEN_INDEX, | |
| ) | |
| from longvu.conversation import conv_templates, SeparatorStyle | |
| from longvu.mm_datautils import ( | |
| KeywordsStoppingCriteria, | |
| process_images, | |
| tokenizer_image_token, | |
| ) | |
| from decord import cpu, VideoReader | |
| from huggingface_hub import snapshot_download | |
| title_markdown = """ | |
| <div style="display: flex; justify-content: center; align-items: center; text-align: center;"> | |
| <div> | |
| <h1 >LongVU: Spatiotemporal Adaptive Compression for Long Video-Language Understanding</h1> | |
| </div> | |
| </div> | |
| <div align="center"> | |
| <div style="display:flex; gap: 0.25rem; margin-top: 10px;" align="center"> | |
| <a href='https://vision-cair.github.io/LongVU/'><img src='https://img.shields.io/badge/Project-LongVU-blue'></a> | |
| <a href='https://huggingface.co/Vision-CAIR/LongVU_Qwen2_7B'><img src='https://img.shields.io/badge/model-checkpoints-yellow'></a> | |
| </div> | |
| </div> | |
| """ | |
| block_css = """ | |
| #buttons button { | |
| min-width: min(120px,100%); | |
| color: #9C276A | |
| } | |
| """ | |
| plum_color = gr.themes.colors.Color( | |
| name='plum', | |
| c50='#F8E4EF', | |
| c100='#E9D0DE', | |
| c200='#DABCCD', | |
| c300='#CBA8BC', | |
| c400='#BC94AB', | |
| c500='#AD809A', | |
| c600='#9E6C89', | |
| c700='#8F5878', | |
| c800='#804467', | |
| c900='#713056', | |
| c950='#662647', | |
| ) | |
| class Chat: | |
| def __init__(self): | |
| self.version = "qwen" | |
| model_name = "cambrian_qwen" | |
| model_path = snapshot_download("Vision-CAIR/LongVU_Qwen2_7B", repo_type="model") | |
| + device = "cuda" | |
| self.tokenizer, self.model, self.processor, _ = load_pretrained_model(model_path, None, model_name, device=device) | |
| self.model.eval() | |
| def remove_after_last_dot(self, s): | |
| last_dot_index = s.rfind('.') | |
| if last_dot_index == -1: | |
| return s | |
| return s[:last_dot_index + 1] | |
| def generate(self, data: list, message, temperature, top_p, max_output_tokens): | |
| # TODO: support multiple turns of conversation. | |
| assert len(data) == 1 | |
| tensor, image_sizes, modal = data[0] | |
| conv = conv_templates[self.version].copy() | |
| if isinstance(message, str): | |
| conv.append_message("user", DEFAULT_IMAGE_TOKEN + '\n' + message) | |
| elif isinstance(message, list): | |
| if DEFAULT_IMAGE_TOKEN not in message[0]['content']: | |
| message[0]['content'] = DEFAULT_IMAGE_TOKEN + '\n' + message[0]['content'] | |
| for mes in message: | |
| conv.append_message(mes["role"], mes["content"]) | |
| conv.append_message("assistant", None) | |
| prompt = conv.get_prompt() | |
| input_ids = ( | |
| tokenizer_image_token(prompt, self.tokenizer, IMAGE_TOKEN_INDEX, return_tensors="pt") | |
| .unsqueeze(0) | |
| .to(self.model.device) | |
| ) | |
| if "llama3" in self.version: | |
| input_ids = input_ids[0][1:].unsqueeze(0) # remove bos | |
| stop_str = conv.sep if conv.sep_style != SeparatorStyle.TWO else conv.sep2 | |
| keywords = [stop_str] | |
| stopping_criteria = KeywordsStoppingCriteria(keywords, self.tokenizer, input_ids) | |
| with torch.inference_mode(): | |
| output_ids = self.model.generate( | |
| input_ids, | |
| images=tensor, | |
| image_sizes=image_sizes, | |
| do_sample=True, | |
| temperature=temperature, | |
| max_new_tokens=max_output_tokens, | |
| use_cache=True, | |
| top_p=top_p, | |
| stopping_criteria=[stopping_criteria], | |
| ) | |
| pred = self.tokenizer.batch_decode(output_ids, skip_special_tokens=True)[0].strip() | |
| return self.remove_after_last_dot(pred) | |
| def generate(image, video, message, chatbot, textbox_in, temperature, top_p, max_output_tokens, dtype=torch.float16): | |
| if textbox_in is None: | |
| raise gr.Error("Chat messages cannot be empty") | |
| return ( | |
| gr.update(value=image, interactive=True), | |
| gr.update(value=video, interactive=True), | |
| message, | |
| chatbot, | |
| None, | |
| ) | |
| data = [] | |
| processor = handler.processor | |
| try: | |
| if image is not None: | |
| data.append((processor['image'](image).to(handler.model.device, dtype=dtype), None, '<image>')) | |
| elif video is not None: | |
| vr = VideoReader(video, ctx=cpu(0), num_threads=1) | |
| fps = float(vr.get_avg_fps()) | |
| frame_indices = np.array( | |
| [ | |
| i | |
| for i in range( | |
| 0, | |
| len(vr), | |
| round(fps), | |
| ) | |
| ] | |
| ) | |
| video_tensor = [] | |
| for frame_index in frame_indices: | |
| img = vr[frame_index].asnumpy() | |
| video_tensor.append(img) | |
| video_tensor = np.stack(video_tensor) | |
| image_sizes = [video_tensor[0].shape[:2]] | |
| video_tensor = process_images(video_tensor, processor, handler.model.config) | |
| video_tensor = [item.unsqueeze(0).to(handler.model.device, dtype=dtype) for item in video_tensor] | |
| data.append((video_tensor, image_sizes, '<video>')) | |
| elif image is None and video is None: | |
| data.append((None, None, '<text>')) | |
| else: | |
| raise NotImplementedError("Not support image and video at the same time") | |
| except Exception as e: | |
| traceback.print_exc() | |
| return gr.update(value=None, interactive=True), gr.update(value=None, interactive=True), message, chatbot, None | |
| assert len(message) % 2 == 0, "The message should be a pair of user and system message." | |
| show_images = "" | |
| if image is not None: | |
| show_images += f'<img src="./file={image}" style="display: inline-block;width: 250px;max-height: 400px;">' | |
| if video is not None: | |
| show_images += f'<video controls playsinline width="300" style="display: inline-block;" src="./file={video}"></video>' | |
| one_turn_chat = [textbox_in, None] | |
| # 1. first run case | |
| if len(chatbot) == 0: | |
| one_turn_chat[0] += "\n" + show_images | |
| # 2. not first run case | |
| else: | |
| # scanning the last image or video | |
| length = len(chatbot) | |
| for i in range(length - 1, -1, -1): | |
| previous_image = re.findall(r'<img src="./file=(.+?)"', chatbot[i][0]) | |
| previous_video = re.findall(r'<video controls playsinline width="500" style="display: inline-block;" src="./file=(.+?)"', chatbot[i][0]) | |
| if len(previous_image) > 0: | |
| previous_image = previous_image[-1] | |
| # 2.1 new image append or pure text input will start a new conversation | |
| if (video is not None) or (image is not None and os.path.basename(previous_image) != os.path.basename(image)): | |
| message.clear() | |
| one_turn_chat[0] += "\n" + show_images | |
| break | |
| elif len(previous_video) > 0: | |
| previous_video = previous_video[-1] | |
| # 2.2 new video append or pure text input will start a new conversation | |
| if image is not None or (video is not None and os.path.basename(previous_video) != os.path.basename(video)): | |
| message.clear() | |
| one_turn_chat[0] += "\n" + show_images | |
| break | |
| message.append({'role': 'user', 'content': textbox_in}) | |
| text_en_out = handler.generate(data, message, temperature=temperature, top_p=top_p, max_output_tokens=max_output_tokens) | |
| message.append({'role': 'assistant', 'content': text_en_out}) | |
| one_turn_chat[1] = text_en_out | |
| chatbot.append(one_turn_chat) | |
| return gr.update(value=image, interactive=True), gr.update(value=video, interactive=True), message, chatbot, None | |
| def regenerate(message, chatbot): | |
| message.pop(-1), message.pop(-1) | |
| chatbot.pop(-1) | |
| return message, chatbot | |
| def clear_history(message, chatbot): | |
| message.clear(), chatbot.clear() | |
| return (gr.update(value=None, interactive=True), | |
| gr.update(value=None, interactive=True), | |
| message, chatbot, | |
| gr.update(value=None, interactive=True)) | |
| handler = Chat() | |
| textbox = gr.Textbox(show_label=False, placeholder="Enter text and press ENTER", container=False) | |
| theme = gr.themes.Default(primary_hue=plum_color) | |
| # theme.update_color("primary", plum_color.c500) | |
| theme.set(slider_color="#9C276A") | |
| theme.set(block_title_text_color="#9C276A") | |
| theme.set(block_label_text_color="#9C276A") | |
| theme.set(button_primary_text_color="#9C276A") | |
| with gr.Blocks(title='LongVU', theme=theme, css=block_css) as demo: | |
| gr.Markdown(title_markdown) | |
| message = gr.State([]) | |
| with gr.Row(): | |
| with gr.Column(scale=3): | |
| image = gr.State(None) | |
| video = gr.Video(label="Input Video") | |
| with gr.Accordion("Parameters", open=True) as parameter_row: | |
| temperature = gr.Slider( | |
| minimum=0.1, | |
| maximum=1.0, | |
| value=0.2, | |
| step=0.1, | |
| interactive=True, | |
| label="Temperature", | |
| ) | |
| top_p = gr.Slider( | |
| minimum=0.0, | |
| maximum=1.0, | |
| value=0.7, | |
| step=0.1, | |
| interactive=True, | |
| label="Top P", | |
| ) | |
| max_output_tokens = gr.Slider( | |
| minimum=64, | |
| maximum=512, | |
| value=128, | |
| step=64, | |
| interactive=True, | |
| label="Max output tokens", | |
| ) | |
| with gr.Column(scale=7): | |
| chatbot = gr.Chatbot(label="LongVU", bubble_full_width=True, height=420) | |
| with gr.Row(): | |
| with gr.Column(scale=8): | |
| textbox.render() | |
| with gr.Column(scale=1, min_width=50): | |
| submit_btn = gr.Button(value="Send", variant="primary", interactive=True) | |
| with gr.Row(elem_id="buttons") as button_row: | |
| upvote_btn = gr.Button(value="👍 Upvote", interactive=True) | |
| downvote_btn = gr.Button(value="👎 Downvote", interactive=True) | |
| regenerate_btn = gr.Button(value="🔄 Regenerate", interactive=True) | |
| clear_btn = gr.Button(value="🗑️ Clear history", interactive=True) | |
| with gr.Row(): | |
| with gr.Column(): | |
| gr.Examples( | |
| examples=[ | |
| [ | |
| f"./examples/video3.mp4", | |
| "What is the moving direction of the yellow ball?", | |
| ], | |
| [ | |
| f"./examples/video1.mp4", | |
| "Describe this video in detail.", | |
| ], | |
| [ | |
| f"./examples/video2.mp4", | |
| "What is the name of the store?", | |
| ], | |
| ], | |
| inputs=[video, textbox], | |
| ) | |
| submit_btn.click( | |
| generate, | |
| [image, video, message, chatbot, textbox, temperature, top_p, max_output_tokens], | |
| [image, video, message, chatbot, textbox]) | |
| textbox.submit( | |
| generate, | |
| [ | |
| image, | |
| video, | |
| message, | |
| chatbot, | |
| textbox, | |
| temperature, | |
| top_p, | |
| max_output_tokens, | |
| ], | |
| [image, video, message, chatbot, textbox], | |
| ) | |
| regenerate_btn.click( | |
| regenerate, | |
| [message, chatbot], | |
| [message, chatbot]).then( | |
| generate, | |
| [image, video, message, chatbot, textbox, temperature, top_p, max_output_tokens], | |
| [image, video, message, chatbot]) | |
| clear_btn.click( | |
| clear_history, | |
| [message, chatbot], | |
| [image, video, message, chatbot, textbox]) | |
| demo.launch() | |