Upload app.py

app.py

@@ -0,0 +1,300 @@
+import os
+import random
+import uuid
+import json
+import time
+import asyncio
+from threading import Thread
+
+import gradio as gr
+import spaces
+import torch
+import numpy as np
+from PIL import Image
+import cv2
+import edge_tts
+
+from transformers import (
+    AutoModelForCausalLM,
+    AutoTokenizer,
+    TextIteratorStreamer,
+    Qwen2VLForConditionalGeneration,
+    AutoProcessor,
+)
+from transformers.image_utils import load_image
+
+# Constants for text generation
+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 text-only model and tokenizer
+model_id = "prithivMLmods/Galactic-Qwen-14B-Exp2"
+tokenizer = AutoTokenizer.from_pretrained(model_id)
+model = AutoModelForCausalLM.from_pretrained(
+    model_id,
+    device_map="auto",
+    torch_dtype=torch.bfloat16,
+)
+model.eval()
+
+# Load multimodal processor and model
+MODEL_ID = "prithivMLmods/Imgscope-OCR-2B-0527"
+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()
+
+# Edge TTS voices mapping for new tags.
+TTS_VOICE_MAP = {
+    "@jennyneural": "en-US-JennyNeural",
+    "@guyneural": "en-US-GuyNeural",
+    "@palomaneural": "es-US-PalomaNeural",
+    "@alonsoneural": "es-US-AlonsoNeural",
+    "@madhurneural": "hi-IN-MadhurNeural"
+}
+
+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
+
+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
+
+def downsample_video(video_path):
+    """
+    Downsamples the video to 10 evenly spaced frames.
+    Each frame is returned as a PIL image along with its timestamp.
+    """
+    vidcap = cv2.VideoCapture(video_path)
+    total_frames = int(vidcap.get(cv2.CAP_PROP_FRAME_COUNT))
+    fps = vidcap.get(cv2.CAP_PROP_FPS)
+    frames = []
+    # Sample 10 evenly spaced frames.
+    frame_indices = np.linspace(0, total_frames - 1, 10, dtype=int)
+    for i in frame_indices:
+        vidcap.set(cv2.CAP_PROP_POS_FRAMES, i)
+        success, image = vidcap.read()
+        if success:
+            image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)  # Convert BGR to RGB
+            pil_image = Image.fromarray(image)
+            timestamp = round(i / fps, 2)
+            frames.append((pil_image, timestamp))
+    vidcap.release()
+    return frames
+
+def progress_bar_html(label: str) -> str:
+    """
+    Returns an HTML snippet for a thin progress bar with a label.
+    The progress bar is styled as a light cyan animated bar.
+    """
+    return f'''
+<div style="display: flex; align-items: center;">
+    <span style="margin-right: 10px; font-size: 14px;">{label}</span>
+    <div style="width: 110px; height: 5px; background-color: #B0E0E6; border-radius: 2px; overflow: hidden;">
+        <div style="width: 100%; height: 100%; background-color: #00FFFF; animation: loading 1.5s linear infinite;"></div>
+    </div>
+</div>
+<style>
+@keyframes loading {{
+    0% {{ transform: translateX(-100%); }}
+    100% {{ transform: translateX(100%); }}
+}}
+</style>
+    '''
+
+@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, video processing,
+    and Edge TTS when using the new tags @JennyNeural or @GuyNeural.
+    Special command:
+      - "@video-infer": triggers video processing using Imgscope-OCR
+    """
+    text = input_dict["text"]
+    files = input_dict.get("files", [])
+    lower_text = text.strip().lower()
+
+    # Check for TTS tag in the prompt.
+    tts_voice = None
+    for tag, voice in TTS_VOICE_MAP.items():
+        if lower_text.startswith(tag):
+            tts_voice = voice
+            text = text[len(tag):].strip()  # Remove the tag from the prompt.
+            break
+
+    # Branch for video processing with Callisto OCR3.
+    if lower_text.startswith("@video-infer"):
+        prompt = text[len("@video-infer"):].strip() if not tts_voice else text
+        if files:
+            # Assume the first file is a video.
+            video_path = files[0]
+            frames = downsample_video(video_path)
+            messages = [
+                {"role": "system", "content": [{"type": "text", "text": "You are a helpful assistant."}]},
+                {"role": "user", "content": [{"type": "text", "text": prompt}]}
+            ]
+            # Append each frame with its timestamp.
+            for frame in frames:
+                image, timestamp = frame
+                image_path = f"video_frame_{uuid.uuid4().hex}.png"
+                image.save(image_path)
+                messages[1]["content"].append({"type": "text", "text": f"Frame {timestamp}:"})
+                messages[1]["content"].append({"type": "image", "url": image_path})
+        else:
+            messages = [
+                {"role": "system", "content": [{"type": "text", "text": "You are a helpful assistant."}]},
+                {"role": "user", "content": [{"type": "text", "text": prompt}]}
+            ]
+        # Enable truncation to avoid token/feature mismatch.
+        inputs = processor.apply_chat_template(
+            messages,
+            tokenize=True,
+            add_generation_prompt=True,
+            return_dict=True,
+            return_tensors="pt",
+            truncation=True,
+            max_length=MAX_INPUT_TOKEN_LENGTH
+        ).to("cuda")
+        streamer = TextIteratorStreamer(processor, skip_prompt=True, skip_special_tokens=True)
+        generation_kwargs = {
+            **inputs,
+            "streamer": streamer,
+            "max_new_tokens": max_new_tokens,
+            "do_sample": True,
+            "temperature": temperature,
+            "top_p": top_p,
+            "top_k": top_k,
+            "repetition_penalty": repetition_penalty,
+        }
+        thread = Thread(target=model_m.generate, kwargs=generation_kwargs)
+        thread.start()
+        buffer = ""
+        yield progress_bar_html("Processing video with Imgscope-OCR")
+        for new_text in streamer:
+            buffer += new_text
+            buffer = buffer.replace("<|im_end|>", "")
+            time.sleep(0.01)
+            yield buffer
+        return
+
+    # Multimodal processing when files are provided.
+    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_full = processor.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
+        # Enable truncation explicitly here as well.
+        inputs = processor(
+            text=[prompt_full],
+            images=images,
+            return_tensors="pt",
+            padding=True,
+            truncation=True,
+            max_length=MAX_INPUT_TOKEN_LENGTH
+        ).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 progress_bar_html("Processing image with Imgscope-OCR")
+        for new_text in streamer:
+            buffer += new_text
+            buffer = buffer.replace("<|im_end|>", "")
+            time.sleep(0.01)
+            yield buffer
+    else:
+        # Normal text conversation processing with Pocket Llama.
+        conversation = clean_chat_history(chat_history)
+        conversation.append({"role": "user", "content": text})
+        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 = []
+        yield progress_bar_html("Processing With Galactic Qwen")
+        for new_text in streamer:
+            outputs.append(new_text)
+            yield "".join(outputs)
+        final_response = "".join(outputs)
+        yield final_response
+
+        # If a TTS voice was specified, convert the final response to speech.
+        if tts_voice:
+            output_file = asyncio.run(text_to_speech(final_response, tts_voice))
+            yield gr.Audio(output_file, autoplay=True)
+
+# Create the Gradio ChatInterface with the custom CSS applied
+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=[
+        ["Write the code that converts temperatures between Celsius and Fahrenheit in short"],
+        [{"text": "Create a short story based on the image.", "files": ["examples/1.jpg"]}],
+        ["@JennyNeural Who was Nikola Tesla and what were his contributions?"],
+        [{"text": "@video-infer Describe the video", "files": ["examples/Missing.mp4"]}]
+    ],
+    cache_examples=False,
+    description="# **Imgscope-OCR-Mini**",
+    type="messages",
+    fill_height=True,
+    textbox=gr.MultimodalTextbox(label="Query Input", file_types=["image", "video"], file_count="multiple"),
+    stop_btn="Stop Generation",
+    multimodal=True,
+)
+
+if __name__ == "__main__":
+    demo.queue(max_size=20).launch(share=True)