app_v4.py

# app_v4.py
import gradio as gr
import torch
import spaces
import os
import datetime
import io
import moondream as md
from diffusers.utils import load_image
from PIL import Image
from threading import Thread
from typing import Generator
from huggingface_hub import CommitScheduler, HfApi, logging
from debug import log_params, scheduler, save_image
logging.set_verbosity_debug()
from model_loader import safe_model_load

# Ensure device is set
DEVICE = "cuda" if torch.cuda.is_available() else "cpu"
MAX_SEED = 1000000

model_cache = {"models": None}

@spaces.GPU(duration=12)  # This function gets priority for GPU access
def load_warm_models():
    """Special function to keep models warm in ZeroGPU"""
    if model_cache["models"] is None:
        model_cache["models"] = safe_model_load()
    return model_cache["models"]

# This wrapper keeps the models loaded and accessible
def get_model():
    """Get models from cache"""
    if model_cache["models"] is None:
        model_cache["models"] = load_warm_models()
    return model_cache["models"]

# import subprocess
# # subprocess.run("rm -rf /data-nvme/zerogpu-offload/*", env={}, shell=True)

pipe = get_model()["pipeline"]
model = get_model()["model"]

@spaces.GPU(duration=12)
@torch.no_grad()
def generate_image(prompt, scale, steps, control_image, controlnet_conditioning_scale, guidance_scale, seed, guidance_end):
    generator = torch.Generator().manual_seed(seed)
    # Load control image
    control_image = load_image(control_image)
    w, h = control_image.size
    w = w - w % 32
    h = h - h % 32
    control_image = control_image.resize((int(w * scale), int(h * scale)), resample=2)  # Resample.BILINEAR
    print("Size to: " + str(control_image.size[0]) + ", " + str(control_image.size[1]))
    print(f"PromptLog: {repr(prompt)}")
    with torch.inference_mode():
        image = pipe(
            generator=generator,
            prompt=prompt,
            control_image=control_image,
            controlnet_conditioning_scale=controlnet_conditioning_scale,
            num_inference_steps=steps,
            guidance_scale=guidance_scale,
            height=control_image.size[1],
            width=control_image.size[0],
            control_guidance_start=0.0,
            control_guidance_end=guidance_end,
        ).images[0]
        # print("Type: " + str(type(image)))
    return image

def combine_caption_focus(caption, focus):
    if caption is None:
        caption = ""
    if focus is None:
        focus = "highly detailed photo, raw photography."
    return (str(caption) + "\n\n" + str(focus)).strip()

def generate_caption(control_image):
    if control_image is None:
        return None, None
    
    # Generate a detailed caption
    mcaption = model.caption(control_image, length="short")
    detailed_caption = mcaption["caption"]
    print(f"Detailed caption: {detailed_caption}")
    
    return detailed_caption

def generate_focus(control_image, focus_list):
    if control_image is None:
        return None
    if focus_list is None:
        return ""
    # Generate a detailed caption
    focus_query = model.query(control_image, "Please provide a concise but illustrative description of the following area(s) of focus: " + focus_list)
    focus_description = focus_query["answer"]
    print(f"Areas of focus: {focus_description}") 

    return focus_description

def process_image(control_image, user_prompt, system_prompt, scale, steps, 
                controlnet_conditioning_scale, guidance_scale, seed, 
                guidance_end, temperature, top_p, max_new_tokens, log_prompt):
    # Initialize with empty caption
    final_prompt = user_prompt.strip()
    # If no user prompt provided, generate a caption first
    if not final_prompt:
        # Generate a detailed caption
        print("Generating caption...")
        mcaption = model.caption(control_image, length="normal")
        detailed_caption = mcaption["caption"]
        final_prompt = detailed_caption
        yield f"Using caption: {final_prompt}", None, final_prompt
    
    # Show the final prompt being used
    yield f"Generating with: {final_prompt}", None, final_prompt
    
    # Generate the image
    try:
        image = generate_image(
            prompt=final_prompt,
            scale=scale,
            steps=steps,
            control_image=control_image,
            controlnet_conditioning_scale=controlnet_conditioning_scale,
            guidance_scale=guidance_scale,
            seed=seed,
            guidance_end=guidance_end
        )
        
        try:
            debug_img = Image.open(image.save("/tmp/" + str(seed) + "output.png"))
            save_image("/tmp/" + str(seed) + "output.png", debug_img)
        except Exception as e:
            print("Error 160: " + str(e))
        log_params(final_prompt, scale, steps, controlnet_conditioning_scale, guidance_scale, seed, guidance_end, control_image, image)
        yield f"Completed! Used prompt: {final_prompt}", image, final_prompt
    except Exception as e:
        print("Error: " + str(e))
        yield f"Error: {str(e)}", None, None
    
with gr.Blocks(title="FLUX Turbo Upscaler", fill_height=True) as demo:
    gr.Markdown("⚠️ WIP SPACE - UNFINISHED & BUGGY")
    # status_box = gr.Markdown("🔄 Warming up...")
    
    with gr.Row():
        with gr.Accordion():
            control_image = gr.Image(type="pil", label="Control Image", show_label=False)
        with gr.Accordion():
            generated_image = gr.Image(type="pil", label="Generated Image", format="png", show_label=False)
    with gr.Row():
        with gr.Column(scale=1):
            prompt = gr.Textbox(lines=4, info="Enter your prompt here or wait for auto-generation...", label="Image Description")
            focus = gr.Textbox(label="Area(s) of Focus", info="e.g. 'face', 'eyes', 'hair', 'clothes', 'background', etc.", value="clothing material, textures, ethnicity")
            scale = gr.Slider(1, 3, value=1, label="Scale (Upscale Factor)", step=0.25)
            with gr.Row():
                generate_button = gr.Button("Generate Image", variant="primary")
                caption_button = gr.Button("Generate Caption", variant="secondary")
        with gr.Column(scale=1):
            seed = gr.Slider(0, MAX_SEED, value=42, label="Seed", step=1)
            steps = gr.Slider(2, 16, value=8, label="Steps", step=1)
            controlnet_conditioning_scale = gr.Slider(0, 1, value=0.6, label="ControlNet Scale")
            guidance_scale = gr.Slider(1, 30, value=3.5, label="Guidance Scale")
            guidance_end = gr.Slider(0, 1, value=1.0, label="Guidance End")
    with gr.Row():
        with gr.Accordion("Auto-Caption settings", open=False, visible=False):
            system_prompt = gr.Textbox(
                lines=4, 
                value="Write a straightforward caption for this image. Begin with the main subject and medium. Mention pivotal elements—people, objects, scenery—using confident, definite language. Focus on concrete details like color, shape, texture, and spatial relationships. Show how elements interact. Omit mood and speculative wording. If text is present, quote it exactly. Note any watermarks, signatures, or compression artifacts. Never mention what's absent, resolution, or unobservable details. Vary your sentence structure and keep the description concise, without starting with 'This image is…' or similar phrasing.",
                label="System Prompt for Captioning",
                visible=False  # Changed to visible
            )
            temperature_slider = gr.Slider(
                minimum=0.0, maximum=2.0, value=0.6, step=0.05,
                label="Temperature",
                info="Higher values make the output more random, lower values make it more deterministic.",
                visible=False  # Changed to visible
            )
            top_p_slider = gr.Slider(
                minimum=0.0, maximum=1.0, value=0.9, step=0.01,
                label="Top-p",
                visible=False  # Changed to visible
            )
            max_tokens_slider = gr.Slider(
                minimum=1, maximum=2048, value=368, step=1,
                label="Max New Tokens",
                info="Maximum number of tokens to generate. The model will stop generating if it reaches this limit.",
                visible=False  # Changed to visible
            )
        log_prompt = gr.Checkbox(value=True, label="Log", visible=False)  # Changed to visible
    
    gr.Markdown("**Tips:** 8 steps is all you need! Incredibly powerful tool, usage instructions coming soon.")

    caption_state = gr.State()
    focus_state = gr.State()
    log_state = gr.State()

    generate_button.click(
        fn=process_image,
        inputs=[
            control_image, prompt, system_prompt, scale, steps, 
            controlnet_conditioning_scale, guidance_scale, seed, 
            guidance_end, temperature_slider, top_p_slider, max_tokens_slider, log_prompt
        ],
        outputs=[log_state, generated_image, prompt]
    )
    control_image.input(
        generate_caption,
        inputs=[control_image],
        outputs=[caption_state]
    ).then(
        generate_focus,
        inputs=[control_image, focus],
        outputs=[focus_state]
    ).then(
        combine_caption_focus,
        inputs=[caption_state, focus_state],
        outputs=[prompt]
    )
    caption_button.click(
        fn=generate_caption,
        inputs=[control_image],
        outputs=[prompt]
    ).then(
        generate_focus,
        inputs=[control_image, focus],
        outputs=[focus_state]
    ).then(
        combine_caption_focus,
        inputs=[caption_state, focus_state],
        outputs=[prompt]
    )

demo.launch(show_error=True)