#!/usr/bin/env python3

import argparse
import blup.frame
import blup.output
import blup.animation
import blup.writebml
import PIL.Image


DEPTH = 256


if __name__ == '__main__':
    parser = argparse.ArgumentParser(
        description='Convert GIF animations to BML.'
    )
    parser.add_argument('input_file')
    parser.add_argument('output_file')
    args = parser.parse_args()

    gif = PIL.Image.open(args.input_file)

    dim = blup.frame.FrameDimension(gif.width, gif.height, DEPTH, 3)
    anim = blup.animation.Animation(dim)

    for i in range(gif.n_frames):
        gif.seek(i)
        gf = gif.convert('RGB')
        f = blup.animation.AnimationFrame(dim, gf.info.get('delay', 100))
        for x in range(dim.width):
            for y in range(dim.height):
                f.setPixel(x, y, gf.getpixel((x, y)))
        anim.addFrame(f)

    blup.writebml.writeBml(anim, args.output_file)