1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Support for Intel Camera Imaging ISP subsystem.
4 * Copyright (c) 2015, Intel Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
13 * more details.
14 */
15
16#ifndef __GDC_PUBLIC_H_INCLUDED__
17#define __GDC_PUBLIC_H_INCLUDED__
18
19/*! Write the bicubic interpolation table of GDC[ID]
20
21 \param	ID[in]				GDC identifier
22 \param data[in]			The data matrix to be written
23
24 \pre
25	- data must point to a matrix[4][HRT_GDC_N]
26
27 \implementation dependent
28	- The value of "HRT_GDC_N" is device specific
29	- The LUT should not be partially written
30	- The LUT format is a quadri-phase interpolation
31	  table. The layout is device specific
32	- The range of the values data[n][m] is device
33	  specific
34
35 \return none, GDC[ID].lut[0...3][0...HRT_GDC_N-1] = data
36 */
37void gdc_lut_store(
38    const gdc_ID_t		ID,
39    const int			data[4][HRT_GDC_N]);
40
41/*! Convert the bicubic interpolation table of GDC[ID] to the ISP-specific format
42
43 \param	ID[in]				GDC identifier
44 \param in_lut[in]			The data matrix to be converted
45 \param out_lut[out]			The data matrix as the output of conversion
46 */
47void gdc_lut_convert_to_isp_format(
48    const int in_lut[4][HRT_GDC_N],
49    int out_lut[4][HRT_GDC_N]);
50
51/*! Return the integer representation of 1.0 of GDC[ID]
52
53 \param	ID[in]				GDC identifier
54
55 \return unity
56 */
57int gdc_get_unity(
58    const gdc_ID_t		ID);
59
60#endif /* __GDC_PUBLIC_H_INCLUDED__ */
61