app_23_04_2024.py

import gradio as gr
import os
import whisper
import cv2
import json
import tempfile
import torch
import transformers
import re
import time
from torch import cuda, bfloat16
from moviepy.editor import VideoFileClip
from image_caption import Caption
from pathlib import Path
from langchain import PromptTemplate
from langchain import LLMChain
from langchain.llms import HuggingFacePipeline
from difflib import SequenceMatcher
import argparse
import shutil
from PIL import Image
import google.generativeai as genai
from huggingface_hub import InferenceClient
from threading import Thread
from typing import Iterator
import threading
import queue

class VideoClassifier:
    global audio_time , setup_time , caption_time , classification_time
    audio_time = 0
    setup_time = 0
    caption_time = 0
    classification_time = 0
    def __init__(self, no_of_frames, mode='interface',model='gemini'):
        
        self.no_of_frames = no_of_frames
        self.mode = mode
        self.model_name = model.strip().lower()
        print(self.model_name)
        os.environ["TOKENIZERS_PARALLELISM"] = "false"
        if self.model_name=='mistral':
            print("Setting up Mistral model for Class Selection")
            self.setup_mistral_model()
        else :
            print("Setting up Gemini model for Class Selection")
            self.setup_gemini_model()
        self.setup_paths()
        self.hf_key = os.environ.get("HF_KEY", None)
        # self.whisper_model = whisper.load_model("base")
        
    def setup_paths(self):
        self.path = './results'
        if os.path.exists(self.path):
            shutil.rmtree(self.path)  
        os.mkdir(self.path)

    def setup_gemini_model(self):
        self.genai = genai
        self.genai.configure(api_key="AIzaSyAFG94rVbm9eWepO5uPGsMha8XJ-sHbMdA")
        self.genai_model = genai.GenerativeModel('gemini-pro')
        self.whisper_model = whisper.load_model("base")
        self.img_cap = Caption()

    def setup_mistral_space_model(self):
        # if not self.hf_key:
        #     raise ValueError("Hugging Face API key is not set or invalid.")
    
        # self.client = InferenceClient("mistralai/Mistral-7B-Instruct-v0.2")
        self.client = InferenceClient("mistralai/Mistral-7B-Instruct-v0.1")
        # self.client = InferenceClient("meta-llama/Meta-Llama-3-8B-Instruct")
        self.whisper_model = whisper.load_model("base")
        self.img_cap = Caption()

    
    def setup_mistral_model(self):
        self.model_id = "mistralai/Mistral-7B-Instruct-v0.2"
        self.device = f'cuda:{cuda.current_device()}' if cuda.is_available() else 'cpu'
        # self.device_name = torch.cuda.get_device_name()
        # print(f"Using device: {self.device} ({self.device_name})")
        bnb_config = transformers.BitsAndBytesConfig(
            load_in_4bit=True,
            bnb_4bit_quant_type='nf4',
            bnb_4bit_use_double_quant=True,
            bnb_4bit_compute_dtype=bfloat16,
        )
        hf_auth = self.hf_key
        print(hf_auth)
        model_config = transformers.AutoConfig.from_pretrained(
            self.model_id,
            # use_auth_token=hf_auth
        )
        self.model = transformers.AutoModelForCausalLM.from_pretrained(
            self.model_id,
            trust_remote_code=True,
            config=model_config,
            quantization_config=bnb_config,
            # use_auth_token=hf_auth
        )
        self.model.eval()
        self.tokenizer = transformers.AutoTokenizer.from_pretrained(
            self.model_id,
            # use_auth_token=hf_auth
        )
        self.generate_text = transformers.pipeline(
            model=self.model, tokenizer=self.tokenizer,
            return_full_text=True,
            task='text-generation',
            temperature=0.01,
            max_new_tokens=32
        )
        self.whisper_model = whisper.load_model("base")
        self.img_cap = Caption()
        self.llm = HuggingFacePipeline(pipeline=self.generate_text)

    def audio_extraction(self,video_input):
        global audio_time
        start_time_audio = time.time()
        print(f"Processing video: {video_input} with {self.no_of_frames} frames.")
        mp4_file = video_input
        video_name = mp4_file.split("/")[-1]
        wav_file = "results/audiotrack.wav"
        video_clip = VideoFileClip(mp4_file)
        audioclip = video_clip.audio
        wav_file = audioclip.write_audiofile(wav_file)
        audioclip.close()
        video_clip.close()
        audiotrack = "results/audiotrack.wav"
        result = self.whisper_model.transcribe(audiotrack, fp16=False)
        transcript = result["text"]
        print("TRANSCRIPT",transcript)
        end_time_audio = time.time()
        audio_time=end_time_audio-start_time_audio
        # print("TIME TAKEN FOR AUDIO CONVERSION (WHISPER)",audio_time)
        
        return transcript
       
    def generate_text(self, inputs, parameters=None):
        if parameters is None:
            parameters = {
                "temperature": 0.7,
                "max_new_tokens": 50,
                "top_p": 0.9,
                "repetition_penalty": 1.2
            }
            
        return self.client(inputs, parameters)
    
    def classify_video(self,video_input):
        global classification_time , caption_time
        transcript=self.audio_extraction(video_input)
        start_time_caption = time.time()
        video = cv2.VideoCapture(video_input)
        length = int(video.get(cv2.CAP_PROP_FRAME_COUNT))
        no_of_frame = int(self.no_of_frames)
        temp_div = length // no_of_frame
        currentframe = 50
        caption_text = []

        for i in range(no_of_frame):
            video.set(cv2.CAP_PROP_POS_FRAMES, currentframe)
            ret, frame = video.read()
            if ret:
                frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
                image = Image.fromarray(frame)
                content = self.img_cap.predict_image_caption_gemini(image)
                print("content", content)
                caption_text.append(content)
                currentframe += temp_div - 1
            else:
                break

        captions = ", ".join(caption_text)
        print("CAPTIONS", captions)
        video.release()
        cv2.destroyAllWindows()
        end_time_caption = time.time()
        caption_time=end_time_caption-start_time_caption
        # print("TIME TAKEN FOR IMAGE CAPTIONING", end_time_caption-start_time_caption)

        start_time_generation = time.time()
        main_categories = Path("main_classes.txt").read_text()
        main_categories_list = ['Automotive', 'Books and Literature', 'Business and Finance', 'Careers', 'Education','Family and Relationships',
        'Fine Art', 'Food & Drink', 'Healthy Living', 'Hobbies & Interests', 'Home & Garden','Medical Health', 'Movies', 'Music and Audio', 
        'News and Politics', 'Personal Finance', 'Pets', 'Pop Culture','Real Estate', 'Religion & Spirituality', 'Science', 'Shopping', 'Sports', 
        'Style & Fashion','Technology & Computing', 'Television', 'Travel', 'Video Gaming']

        generate_kwargs = {
            "temperature": 0.9,
            "max_new_tokens": 256,
            "top_p": 0.95,
            "repetition_penalty": 1.0,
            "do_sample": True,
            "seed": 42,
            "return_full_text": False
        }

        def get_classification():
            messages = [{"role": "user", "content": prompt1}]
            try:
                stream = self.client.chat_completion(messages, max_tokens=100)
                main_class = stream.choices[0].message.content.strip()
            except Exception as e:
                main_class = f"Error: {str(e)}"
            output_queue.put(main_class)
        
        template1 = '''Given below are the different type of main video classes  
        {main_categories}
        You are a text classifier that catergorises the transcript and captions into one main class whose context match with one main class and only generate main class name no need of sub classe or explanation.
        Give more importance to Transcript while classifying .
        Transcript: {transcript}
        Captions: {captions}
        Return only the answer chosen from list and nothing else
        Main-class =>  '''

        formatted_prompt = template1.format(main_categories=main_categories, transcript=transcript, captions=captions)
        print("Formatted prompt:", formatted_prompt)
        
        # print(self.model)
        # print(f"Current model in use: {self.model}")
        if self.model_name=='mistral':
            try:
                prompt1 = PromptTemplate(template=template1, input_variables=['main_categories', 'transcript', 'captions'])
                print("PROMPT 1",prompt1)
                print("Entering mistral chain approach")
                chain1 = LLMChain(llm=self.llm, prompt=prompt1)
                main_class  = chain1.predict(main_categories=main_categories, transcript=transcript, captions=captions)
            except:
                print("Entering template approach")
                output_queue = queue.Queue()

                def get_classification():
                    messages = [{"role": "user", "content": formatted_prompt}]
                    try:
                        stream = self.client.chat_completion(messages, max_tokens=100)
                        main_class = stream.choices[0].message.content.strip()
                    except Exception as ex:
                        main_class = f"Error: {str(ex)}"
                    output_queue.put(main_class)
    
                classification_thread = threading.Thread(target=get_classification)
                classification_thread.start()
                classification_thread.join(timeout=30)
    
                if classification_thread.is_alive():
                    print("Classification timeout occurred.")
                    return "Timeout or error during classification."
    
                # Get result from queue
                main_class = output_queue.get()
                print("MAIN CLASS:", main_class)
                
            print(main_class)
            print("#######################################################")
            try:
                pattern = r"Main-class =>\s*(.+)"
                match = re.search(pattern, main_class)
                if match:
                    main_class = match.group(1).strip()
            except:
                main_class=main_class
        else:
            prompt_text = template1.format(main_categories=main_categories, transcript=transcript, captions=captions)
            response = self.genai_model.generate_content(contents=prompt_text)
            main_class = response.text
            
            print(main_class)
            print("#######################################################")
        print("MAIN CLASS: ",main_class)
        def category_class(class_name,categories_list):
            def similar(str1, str2):
                return SequenceMatcher(None, str1, str2).ratio()
            index_no = 0
            sim = 0
            for sub in categories_list:
                res = similar(class_name, sub)
                if res>sim:
                    sim = res
                    index_no = categories_list.index(sub)
            class_name = categories_list[index_no]
            return class_name
        
        if main_class not in main_categories_list:
            main_class = category_class(main_class,main_categories_list)
        print("POST PROCESSED MAIN CLASS : ",main_class)
        tier_1_index_no = main_categories_list.index(main_class) + 1

        with open('categories_json.txt') as f:
            data = json.load(f)
        sub_categories_list = data[main_class]
        print("SUB CATEGORIES LIST",sub_categories_list)
        with open("sub_categories.txt", "w") as f:
            no = 1
            
            # print(data[main_class])
            for i in data[main_class]:
                f.write(str(no)+')'+str(i) + '\n')
                no = no+1
        sub_categories = Path("sub_categories.txt").read_text()

        template2 = '''Given below are the sub classes of {main_class}.
        {sub_categories}
        You are a text classifier that catergorises the transcript and captions into one sub class whose context match with one sub class and only generate sub class name, Don't give explanation .
        Give more importance to Transcript while classifying .
        Transcript: {transcript}
        Captions: {captions}
        Return only the Sub-class answer chosen from list and nothing else
        Answer in the format:
        Main-class => {main_class}
        Sub-class => 
         '''
        
        prompt2 = PromptTemplate(template=template2, input_variables=['sub_categories', 'transcript', 'captions','main_class'])
        
        if self.model_name=='mistral':
            try:
                chain2 = LLMChain(llm=self.llm, prompt=prompt2)
                sub_class = chain2.predict(sub_categories=sub_categories, transcript=transcript, captions=captions,main_class=main_class)
            except:
                prompt2 = template2.format(sub_categories=sub_categories, transcript=transcript, captions=captions,main_class=main_class)
                messages = [{"role": "user", "content": prompt2}]
                stream = self.client.chat_completion(messages, max_tokens=100)
                sub_class = stream.choices[0].message.content.strip()
                
            print("Preprocess Answer",sub_class)

            try:
                pattern = r"Sub-class =>\s*(.+)"
                match = re.search(pattern, sub_class)
                if match:
                    sub_class = match.group(1).strip()
            except:
                subclass=sub_class
        else:
            prompt_text2 = template1.format(main_categories=main_categories, transcript=transcript, captions=captions)
            response = self.genai_model.generate_content(contents=prompt_text2)
            sub_class = response.text
            print("Preprocess Answer",sub_class)
        
        print("SUB CLASS",sub_class)
        if sub_class not in sub_categories_list:
            sub_class = category_class(sub_class,sub_categories_list)
            print("POST PROCESSED SUB CLASS",sub_class)
        tier_2_index_no = sub_categories_list.index(sub_class) + 1
        print("ANSWER:",sub_class)
        final_answer = (f"Tier 1 category : IAB{tier_1_index_no} : {main_class}\nTier 2 category : IAB{tier_1_index_no}-{tier_2_index_no} : {sub_class}")

        first_video = os.path.join(os.path.dirname(__file__), "American_football_heads_to_India_clip.mp4")
        second_video = os.path.join(os.path.dirname(__file__), "PersonalFinance_clip.mp4")

        # return final_answer, first_video, second_video
        end_time_generation = time.time()
        classification_time = end_time_generation-start_time_generation
        print ("MODEL USED :",self.model_name)
        print("MODEL SETUP TIME :",setup_time)
        print("TIME TAKEN FOR AUDIO CONVERSION (WHISPER) :",audio_time)
        print("TIME TAKEN FOR IMAGE CAPTIONING :", caption_time)
        print("TIME TAKEN FOR CLASS GENERATION :",classification_time)
        print("TOTAL INFERENCE TIME :",audio_time+caption_time+classification_time)
        return final_answer
    
    
    def save_model_choice(self,model_name):
        global setup_time
        start_time_setup = time.time()
    
        self.model_name = model_name
        if self.model_name=='mistral':
            print("Setting up Mistral model for Class Selection")
            self.setup_mistral_space_model()
        else :
            print("Setting up Gemini model for Class Selection")
            self.setup_gemini_model()
        end_time_setup = time.time()
        setup_time=end_time_setup-start_time_setup
        # print("MODEL SETUP TIME",setup_time)
        
        return "Model selected: " + model_name

    def launch_interface(self):
        css_code = """
        .gradio-container {background-color: #FFFFFF;color:#000000;background-size: 200px; background-image:url(https://gitlab.ignitarium.in/saran/logo/-/raw/aab7c77b4816b8a4bbdc5588eb57ce8b6c15c72d/ign_logo_white.png);background-repeat:no-repeat; position:relative; top:1px; left:5px; padding: 50px;text-align: right;background-position: right top;}
        """
        css_code += """
        :root {
        --body-background-fill: #FFFFFF; /* New value */
        }
        """
        css_code += """
        :root {
        --body-background-fill: #000000; /* New value */
        }
        """

        interface_1 = gr.Interface(
        self.save_model_choice,
        inputs=gr.Dropdown(choices=['gemini', 'mistral'], label="Select Model", info="Default model: Gemini"),
        # outputs=interface_1_output,
        outputs="text"
        
    )


        demo = gr.Interface(fn=self.classify_video, inputs="playablevideo",allow_flagging='never', examples=[
                            os.path.join(os.path.dirname(__file__), 
                                         "American_football_heads_to_India_clip.mp4"),os.path.join(os.path.dirname(__file__), "PersonalFinance_clip.mp4"),
                                         os.path.join(os.path.dirname(__file__), "Motorcycle_clip.mp4"),
                                         os.path.join(os.path.dirname(__file__), "Spirituality_1_clip.mp4"),
                                         os.path.join(os.path.dirname(__file__), "Science_clip.mp4")], 
                        cache_examples=False, outputs=["text"],
                        css=css_code, title="Interactive Advertising Bureau (IAB) compliant Video-Ad classification")
        # demo.launch(debug=True)

        gr.TabbedInterface([interface_1, demo], ["Model Selection", "Video Classification"]).launch(debug=True)

    def run_inference(self, video_path,model):
        result = self.classify_video(video_path)
        print(result)
    

if __name__ == "__main__":
    parser = argparse.ArgumentParser(description='Process some videos.')
    parser.add_argument("video_path", nargs='?', default=None, help="Path to the video file")
    parser.add_argument("-n", "--no_of_frames", type=int, default=3, help="Number of frames for image captioning")
    parser.add_argument("--mode", choices=['interface', 'inference'], default='interface', help="Mode of operation: interface or inference")
    parser.add_argument("--model", choices=['gemini','mistral'],default='gemini',help="Model for inference")
    
    args = parser.parse_args()

    vc = VideoClassifier(no_of_frames=args.no_of_frames, mode=args.mode , model=args.model)


    if args.mode == 'interface':
        vc.launch_interface()
    elif args.mode == 'inference' and args.video_path and args.model:
        vc.run_inference(args.video_path,args.model)
    else:
        print("Error: No video path/model provided for inference mode.")

# Usage
### python main.py --mode interface
### python main.py videos/Spirituality_1_clip.mp4 -n 3 --mode inference --model gemini