linux/drivers/gpu/drm/amd/display/dc/spl/dc_spl_isharp_filters.c

// SPDX-License-Identifier: MIT
//
// Copyright 2024 Advanced Micro Devices, Inc.

#include "spl_debug.h"
#include "dc_spl_filters.h"
#include "dc_spl_isharp_filters.h"

//========================================
// Delta Gain 1DLUT
// LUT content is packed as 4-bytes into one DWORD/entry
// A_start = 0.000000
// A_end   = 10.000000
// A_gain  = 2.000000
// B_start = 11.000000
// B_end   = 86.000000
// C_start = 40.000000
// C_end   = 64.000000
//========================================
static const uint32_t filter_isharp_1D_lut_0[ISHARP_LUT_TABLE_SIZE] = …;
//========================================
// Delta Gain 1DLUT
// LUT content is packed as 4-bytes into one DWORD/entry
// A_start = 0.000000
// A_end   = 10.000000
// A_gain  = 0.500000
// B_start = 11.000000
// B_end   = 127.000000
// C_start = 96.000000
// C_end   = 127.000000
//========================================

static const uint32_t filter_isharp_1D_lut_0p5x[ISHARP_LUT_TABLE_SIZE] = …;
//========================================
// Delta Gain 1DLUT
// LUT content is packed as 4-bytes into one DWORD/entry
// A_start = 0.000000
// A_end   = 10.000000
// A_gain  = 1.000000
// B_start = 11.000000
// B_end   = 127.000000
// C_start = 96.000000
// C_end   = 127.000000
//========================================
static const uint32_t filter_isharp_1D_lut_1p0x[ISHARP_LUT_TABLE_SIZE] = …;
//========================================
// Delta Gain 1DLUT
// LUT content is packed as 4-bytes into one DWORD/entry
// A_start = 0.000000
// A_end   = 10.000000
// A_gain  = 1.500000
// B_start = 11.000000
// B_end   = 127.000000
// C_start = 96.000000
// C_end   = 127.000000
//========================================
static const uint32_t filter_isharp_1D_lut_1p5x[ISHARP_LUT_TABLE_SIZE] = …;
//========================================
// Delta Gain 1DLUT
// LUT content is packed as 4-bytes into one DWORD/entry
// A_start = 0.000000
// A_end   = 10.000000
// A_gain  = 2.000000
// B_start = 11.000000
// B_end   = 127.000000
// C_start = 40.000000
// C_end   = 127.000000
//========================================
static const uint32_t filter_isharp_1D_lut_2p0x[ISHARP_LUT_TABLE_SIZE] = …;
//========================================
// Delta Gain 1DLUT
// LUT content is packed as 4-bytes into one DWORD/entry
// A_start = 0.000000
// A_end   = 10.000000
// A_gain  = 3.000000
// B_start = 11.000000
// B_end   = 127.000000
// C_start = 40.000000
// C_end   = 127.000000
//========================================
static const uint32_t filter_isharp_1D_lut_3p0x[ISHARP_LUT_TABLE_SIZE] = …;

//========================================
// Wide scaler coefficients
//========================================================
// <using>			gen_scaler_coeffs.m
// <date>			15-Dec-2021
// <coeffDescrip>	6t_64p_LanczosEd_p_1_p_10qb_
// <num_taps>		6
// <num_phases>		64
// <CoefType>		LanczosEd
// <CoefQuant>		S1.10
//========================================================
static const uint16_t filter_isharp_wide_6tap_64p[198] = …;
// Blur and scale coefficients
//========================================================
// <using>			gen_BlurScale_coeffs.m
// <date>			25-Apr-2022
// <num_taps>		4
// <num_phases>		64
// <CoefType>		Blur & Scale LPF
// <CoefQuant>		S1.10
//========================================================
static const uint16_t filter_isharp_bs_4tap_in_6_64p[198] = …;
//========================================================
// <using>			gen_BlurScale_coeffs.m
// <date>			25-Apr-2022
// <num_taps>		4
// <num_phases>		64
// <CoefType>		Blur & Scale LPF
// <CoefQuant>		S1.10
//========================================================
static const uint16_t filter_isharp_bs_4tap_64p[132] = …;
//========================================================
// <using>			gen_BlurScale_coeffs.m
// <date>			09-Jun-2022
// <num_taps>		3
// <num_phases>		64
// <CoefType>		Blur & Scale LPF
// <CoefQuant>		S1.10
//========================================================
static const uint16_t filter_isharp_bs_3tap_64p[99] = …;

/* Converted Blur & Scale coeff tables from S1.10 to S1.12 */
static uint16_t filter_isharp_bs_4tap_in_6_64p_s1_12[198];
static uint16_t filter_isharp_bs_4tap_64p_s1_12[132];
static uint16_t filter_isharp_bs_3tap_64p_s1_12[99];

/* Pre-generated 1DLUT for given setup and sharpness level */
struct isharp_1D_lut_pregen filter_isharp_1D_lut_pregen[NUM_SHARPNESS_SETUPS] = …;

struct scale_ratio_to_sharpness_level_adj sharpness_level_adj[NUM_SHARPNESS_ADJ_LEVELS] = …;

const uint32_t *spl_get_filter_isharp_1D_lut_0(void)
{ … }
const uint32_t *spl_get_filter_isharp_1D_lut_0p5x(void)
{ … }
const uint32_t *spl_get_filter_isharp_1D_lut_1p0x(void)
{ … }
const uint32_t *spl_get_filter_isharp_1D_lut_1p5x(void)
{ … }
const uint32_t *spl_get_filter_isharp_1D_lut_2p0x(void)
{ … }
const uint32_t *spl_get_filter_isharp_1D_lut_3p0x(void)
{ … }
const uint16_t *spl_get_filter_isharp_wide_6tap_64p(void)
{ … }
uint16_t *spl_get_filter_isharp_bs_4tap_in_6_64p(void)
{ … }
uint16_t *spl_get_filter_isharp_bs_4tap_64p(void)
{ … }
uint16_t *spl_get_filter_isharp_bs_3tap_64p(void)
{ … }

static unsigned int spl_calculate_sharpness_level_adj(struct spl_fixed31_32 ratio)
{ … }

static unsigned int spl_calculate_sharpness_level(struct spl_fixed31_32 ratio,
		int discrete_sharpness_level, enum system_setup setup,
		struct spl_sharpness_range sharpness_range,
		enum scale_to_sharpness_policy scale_to_sharpness_policy)
{ … }

void spl_build_isharp_1dlut_from_reference_curve(struct spl_fixed31_32 ratio, enum system_setup setup,
	struct adaptive_sharpness sharpness, enum scale_to_sharpness_policy scale_to_sharpness_policy)
{ … }

uint32_t *spl_get_pregen_filter_isharp_1D_lut(enum system_setup setup)
{ … }

void spl_init_blur_scale_coeffs(void)
{ … }

uint16_t *spl_dscl_get_blur_scale_coeffs_64p(int taps)
{ … }

void spl_set_blur_scale_data(struct dscl_prog_data *dscl_prog_data,
		const struct spl_scaler_data *data)
{ … }