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

#ifndef __GDC_PUBLIC_H_INCLUDED__
#define __GDC_PUBLIC_H_INCLUDED__

/*! Write the bicubic interpolation table of GDC[ID]

 \param ID[in]                          GDC identifier
 \param data[in]                        The data matrix to be written

 \pre
        - data must point to a matrix[4][HRT_GDC_N]

 \implementation dependent
        - The value of "HRT_GDC_N" is device specific
        - The LUT should not be partially written
        - The LUT format is a quadri-phase interpolation
          table. The layout is device specific
        - The range of the values data[n][m] is device
          specific

 \return none, GDC[ID].lut[0...3][0...HRT_GDC_N-1] = data
 */
void gdc_lut_store(
    const gdc_ID_t              ID,
    const int                   data[4][HRT_GDC_N]);

/*! Convert the bicubic interpolation table of GDC[ID] to the ISP-specific format

 \param ID[in]                          GDC identifier
 \param in_lut[in]                      The data matrix to be converted
 \param out_lut[out]                    The data matrix as the output of conversion
 */
void gdc_lut_convert_to_isp_format(
    const int in_lut[4][HRT_GDC_N],
    int out_lut[4][HRT_GDC_N]);

/*! Return the integer representation of 1.0 of GDC[ID]

 \param ID[in]                          GDC identifier

 \return unity
 */
int gdc_get_unity(
    const gdc_ID_t              ID);

#endif /* __GDC_PUBLIC_H_INCLUDED__ */