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# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2022, Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
#
# Debayering code from PiCamera documentation

from numpy.lib.stride_tricks import as_strided
import libcamera as libcam
import libcamera.utils
import numpy as np


def demosaic(data, r0, g0, g1, b0):
    # Separate the components from the Bayer data to RGB planes

    rgb = np.zeros(data.shape + (3,), dtype=data.dtype)
    rgb[r0[1]::2, r0[0]::2, 0] = data[r0[1]::2, r0[0]::2]  # Red
    rgb[g0[1]::2, g0[0]::2, 1] = data[g0[1]::2, g0[0]::2]  # Green