linux/drivers/staging/media/atomisp/pci/isp/kernels/bnlm/ia_css_bnlm.host.c

// 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.
 */

#include "type_support.h"
#include "ia_css_bnlm.host.h"

#ifndef IA_CSS_NO_DEBUG
#include "ia_css_debug.h" /* ia_css_debug_dtrace() */
#endif
#include <assert_support.h>

#define BNLM_DIV_LUT_SIZE …
static const s32 div_lut_nearests[BNLM_DIV_LUT_SIZE] = …;

static const s32 div_lut_slopes[BNLM_DIV_LUT_SIZE] = …;

static const s32 div_lut_intercepts[BNLM_DIV_LUT_SIZE] = …;

/* Encodes a look-up table from BNLM public parameters to vmem parameters.
 * Input:
 *	lut	:	bnlm_lut struct containing encoded vmem parameters look-up table
 *	lut_thr	:	array containing threshold values for lut
 *	lut_val	:	array containing output values related to lut_thr
 *	lut_size:	Size of lut_val array
 */
static inline void
bnlm_lut_encode(struct bnlm_lut *lut, const int32_t *lut_thr,
		const s32 *lut_val, const uint32_t lut_size)
{ … }

/*
 * - Encodes BNLM public parameters into VMEM parameters
 * - Generates VMEM parameters which will needed internally ISP
 */
void
ia_css_bnlm_vmem_encode(
    struct bnlm_vmem_params *to,
    const struct ia_css_bnlm_config *from,
    size_t size)
{ … }

/* - Encodes BNLM public parameters into DMEM parameters */
void
ia_css_bnlm_encode(
    struct bnlm_dmem_params *to,
    const struct ia_css_bnlm_config *from,
    size_t size)
{ … }

/* Prints debug traces for BNLM public parameters */
void
ia_css_bnlm_debug_trace(
    const struct ia_css_bnlm_config *config,
    unsigned int level)
{ … }