app.py

import gradio as gr
from PIL import Image
import numpy as np

def gif_to_c_array(gif_path, output_c_file):
    # Open the GIF image
    gif = Image.open(gif_path)
    
    # Initialize variables
    frame_count = 0
    c_code = f"const uint16_t {output_c_file.split('.')[0]}[] PROGMEM = {{\n"
    
    # Iterate through each frame in the GIF
    try:
        while True:
            # Convert the frame to RGB
            frame = gif.convert("RGB")
            
            # Resize the frame to match the display resolution (e.g., 240x135 for LilyGO T-Display S3)
            frame = frame.resize((240, 135))
            
            # Convert the frame to a numpy array
            frame_array = np.array(frame)
            
            # Convert RGB to 16-bit color (RGB565)
            for y in range(frame_array.shape[0]):
                for x in range(frame_array.shape[1]):
                    r, g, b = frame_array[y, x]
                    rgb565 = ((r & 0xF8) << 8) | ((g & 0xFC) << 3) | (b >> 3)
                    c_code += f"0x{rgb565:04X}, "
                c_code += "\n"
            
            frame_count += 1
            gif.seek(gif.tell() + 1)  # Move to the next frame
    except EOFError:
        pass  # End of GIF
    
    c_code += "};\n"
    c_code += f"const uint16_t {output_c_file.split('.')[0]}_frame_count = {frame_count};\n"
    
    # Write the C code to a file
    with open(output_c_file, "w") as f:
        f.write(c_code)
    
    return output_c_file

def process_gif(gif_file):
    output_file = "output.c"
    c_file_path = gif_to_c_array(gif_file, output_file)
    return c_file_path

# Gradio Interface
interface = gr.Interface(
    fn=process_gif,
    inputs=gr.File(label="Upload GIF"),
    outputs=gr.File(label="Download .c File"),
    title="GIF to C Converter for LilyGO T-Display S3",
    description="Upload a GIF to convert it to a .c file for use on LilyGO T-Display S3."
)

# Launch the app
interface.launch()