// SPDX-License-Identifier: GPL-2.0
/*
 * Support for Intel Camera Imaging ISP subsystem.
 * Copyright (c) 2015, Intel Corporation.
 */


#include "ia_css_types.h"
#include "sh_css_internal.h"
#include "assert_support.h"
#include "sh_css_frac.h"

#include "ia_css_bh.host.h"

void
ia_css_bh_hmem_decode(
    struct ia_css_3a_rgby_output *out_ptr,
    const struct ia_css_bh_table *hmem_buf)
{
        int i;

        /*
         * No weighted histogram, hence no grid definition
         */
        if (!hmem_buf)
                return;
        assert(sizeof_hmem(HMEM0_ID) == sizeof(*hmem_buf));

        /* Deinterleave */
        for (i = 0; i < HMEM_UNIT_SIZE; i++) {
                out_ptr[i].r = hmem_buf->hmem[BH_COLOR_R][i];
                out_ptr[i].g = hmem_buf->hmem[BH_COLOR_G][i];
                out_ptr[i].b = hmem_buf->hmem[BH_COLOR_B][i];
                out_ptr[i].y = hmem_buf->hmem[BH_COLOR_Y][i];
                /* sh_css_print ("hmem[%d] = %d, %d, %d, %d\n",
                        i, out_ptr[i].r, out_ptr[i].g, out_ptr[i].b, out_ptr[i].y); */
        }
}

void
ia_css_bh_encode(
    struct sh_css_isp_bh_params *to,
    const struct ia_css_3a_config *from,
    unsigned int size)
{
        (void)size;
        /* coefficients to calculate Y */
        to->y_coef_r =
            uDIGIT_FITTING(from->ae_y_coef_r, 16, SH_CSS_AE_YCOEF_SHIFT);
        to->y_coef_g =
            uDIGIT_FITTING(from->ae_y_coef_g, 16, SH_CSS_AE_YCOEF_SHIFT);
        to->y_coef_b =
            uDIGIT_FITTING(from->ae_y_coef_b, 16, SH_CSS_AE_YCOEF_SHIFT);
}