/* 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_BNLM_TYPES_H
#define __IA_CSS_BNLM_TYPES_H
/* @file
* CSS-API header file for Bayer Non-Linear Mean parameters.
*/
#include "type_support.h" /* int32_t */
/* Bayer Non-Linear Mean configuration
*
* \brief BNLM public parameters.
* \details Struct with all parameters for the BNLM kernel that can be set
* from the CSS API.
*
* ISP2.6.1: BNLM is used.
*/
struct ia_css_bnlm_config {
bool rad_enable; /** Enable a radial dependency in a weight calculation */
s32 rad_x_origin; /** Initial x coordinate for a radius calculation */
s32 rad_y_origin; /** Initial x coordinate for a radius calculation */
/* a threshold for average of weights if this < Th, do not denoise pixel */
s32 avg_min_th;
/* minimum weight for denoising if max < th, do not denoise pixel */
s32 max_min_th;
/**@{*/
/* Coefficient for approximation, in the form of (1 + x / N)^N,
* that fits the first-order exp() to default exp_lut in BNLM sheet
* */
s32 exp_coeff_a;
u32 exp_coeff_b;
s32 exp_coeff_c;
u32 exp_exponent;
/**@}*/
s32 nl_th[3]; /** Detail thresholds */
/* Index for n-th maximum candidate weight for each detail group */
s32 match_quality_max_idx[4];
/**@{*/
/* A lookup table for 1/sqrt(1+mu) approximation */
s32 mu_root_lut_thr[15];
s32 mu_root_lut_val[16];
/**@}*/
/**@{*/
/* A lookup table for SAD normalization */
s32 sad_norm_lut_thr[15];
s32 sad_norm_lut_val[16];
/**@}*/
/**@{*/
/* A lookup table that models a weight's dependency on textures */
s32 sig_detail_lut_thr[15];
s32 sig_detail_lut_val[16];
/**@}*/
/**@{*/
/* A lookup table that models a weight's dependency on a pixel's radial distance */
s32 sig_rad_lut_thr[15];
s32 sig_rad_lut_val[16];
/**@}*/
/**@{*/
/* A lookup table to control denoise power depending on a pixel's radial distance */
s32 rad_pow_lut_thr[15];
s32 rad_pow_lut_val[16];
/**@}*/
/**@{*/
/* Non linear transfer functions to calculate the blending coefficient depending on detail group */
/* detail group 0 */
/**@{*/
s32 nl_0_lut_thr[15];
s32 nl_0_lut_val[16];
/**@}*/
/**@{*/
/* detail group 1 */
s32 nl_1_lut_thr[15];
s32 nl_1_lut_val[16];
/**@}*/
/**@{*/
/* detail group 2 */
s32 nl_2_lut_thr[15];
s32 nl_2_lut_val[16];
/**@}*/
/**@{*/
/* detail group 3 */
s32 nl_3_lut_thr[15];
s32 nl_3_lut_val[16];
/**@}*/
/**@}*/
};
#endif /* __IA_CSS_BNLM_TYPES_H */
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