| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Support for Intel Camera Imaging ISP subsystem. |
| * Copyright (c) 2015, Intel Corporation. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms and conditions of the GNU General Public License, |
| * version 2, as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| */ |
| |
| #ifndef __IA_CSS_MACC1_5_TYPES_H |
| #define __IA_CSS_MACC1_5_TYPES_H |
| |
| /* @file |
| * CSS-API header file for Multi-Axis Color Conversion algorithm parameters. |
| */ |
| |
| /* Multi-Axis Color Conversion configuration |
| * |
| * ISP2.6.1: MACC1_5 is used. |
| */ |
| |
| /* Number of axes in the MACC table. */ |
| #define IA_CSS_MACC_NUM_AXES 16 |
| /* Number of coefficients per MACC axes. */ |
| #define IA_CSS_MACC_NUM_COEFS 4 |
| |
| /* Multi-Axes Color Correction (MACC) table. |
| * |
| * ISP block: MACC (MACC by only matrix) |
| * MACC1_5 (MACC by matrix and exponent(ia_css_macc_config)) |
| * ISP1: MACC is used. |
| * ISP2: MACC1_5 is used. |
| * |
| * [MACC] |
| * OutU = (data00 * InU + data01 * InV) >> 13 |
| * OutV = (data10 * InU + data11 * InV) >> 13 |
| * |
| * default/ineffective: |
| * OutU = (8192 * InU + 0 * InV) >> 13 |
| * OutV = ( 0 * InU + 8192 * InV) >> 13 |
| * |
| * [MACC1_5] |
| * OutU = (data00 * InU + data01 * InV) >> (13 - exp) |
| * OutV = (data10 * InU + data11 * InV) >> (13 - exp) |
| * |
| * default/ineffective: (exp=1) |
| * OutU = (4096 * InU + 0 * InV) >> (13 - 1) |
| * OutV = ( 0 * InU + 4096 * InV) >> (13 - 1) |
| */ |
| struct ia_css_macc1_5_table { |
| s16 data[IA_CSS_MACC_NUM_COEFS * IA_CSS_MACC_NUM_AXES]; |
| /** 16 of 2x2 matix |
| MACC1_5: s[macc_config.exp].[13-macc_config.exp], [-8192,8191] |
| default/ineffective: (s1.12) |
| 16 of "identity 2x2 matix" {4096,0,0,4096} */ |
| }; |
| |
| /* Multi-Axes Color Correction (MACC) configuration. |
| * |
| * ISP block: MACC1_5 (MACC by matrix and exponent(ia_css_macc_config)) |
| * ISP2: MACC1_5 is used. |
| */ |
| struct ia_css_macc1_5_config { |
| u8 exp; /** Common exponent of ia_css_macc_table. |
| u8.0, [0,13], default 1, ineffective 1 */ |
| }; |
| |
| #endif /* __IA_CSS_MACC1_5_TYPES_H */ |
