"""CoCo monochrome -- PMODE 4's 256x192 black & white, exposed as the standard
``mono`` mode for cross-platform parity (tone carried by dithering)."""
from __future__ import annotations

from . import pmode4

WIDTH, HEIGHT, PIXEL_ASPECT = pmode4.WIDTH, pmode4.HEIGHT, pmode4.PIXEL_ASPECT


def convert(img_rgb, palette_name="mc6847", dither_mode="floyd",
            intensive=False, base_color=None):
    conv = pmode4.convert(img_rgb, palette_name, dither_mode, intensive,
                          base_color=base_color)
    conv.mode = "mono"
    return conv