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/*
* Copyright 2012-15 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: AMD
*
*/
#include "dm_services.h"
#define DIVIDER 10000
/* S2D13 value in [-3.00...0.9999] */
#define S2D13_MIN (-3 * DIVIDER)
#define S2D13_MAX (3 * DIVIDER)
uint16_t fixed_point_to_int_frac(
struct fixed31_32 arg,
uint8_t integer_bits,
uint8_t fractional_bits)
{
int32_t numerator;
int32_t divisor = 1 << fractional_bits;
uint16_t result;
uint16_t d = (uint16_t)dal_fixed31_32_floor(
dal_fixed31_32_abs(
arg));
if (d <= (uint16_t)(1 << integer_bits) - (1 / (uint16_t)divisor))
numerator = (uint16_t)dal_fixed31_32_floor(
dal_fixed31_32_mul_int(
arg,
divisor));
else {
numerator = dal_fixed31_32_floor(
dal_fixed31_32_sub(
dal_fixed31_32_from_int(
1LL << integer_bits),
dal_fixed31_32_recip(
dal_fixed31_32_from_int(
divisor))));
}
if (numerator >= 0)
result = (uint16_t)numerator;
else
result = (uint16_t)(
(1 << (integer_bits + fractional_bits + 1)) + numerator);
if ((result != 0) && dal_fixed31_32_lt(
arg, dal_fixed31_32_zero))
result |= 1 << (integer_bits + fractional_bits);
return result;
}
/**
* convert_float_matrix
* This converts a double into HW register spec defined format S2D13.
* @param :
* @return None
*/
void convert_float_matrix(
uint16_t *matrix,
struct fixed31_32 *flt,
uint32_t buffer_size)
{
const struct fixed31_32 min_2_13 =
dal_fixed31_32_from_fraction(S2D13_MIN, DIVIDER);
const struct fixed31_32 max_2_13 =
dal_fixed31_32_from_fraction(S2D13_MAX, DIVIDER);
uint32_t i;
for (i = 0; i < buffer_size; ++i) {
uint32_t reg_value =
fixed_point_to_int_frac(
dal_fixed31_32_clamp(
flt[i],
min_2_13,
max_2_13),
2,
13);
matrix[i] = (uint16_t)reg_value;
}
}
static void calculate_adjustments_common(
const struct fixed31_32 *ideal_matrix,
const struct dc_csc_adjustments *adjustments,
struct fixed31_32 *matrix)
{
const struct fixed31_32 sin_hue =
dal_fixed31_32_sin(adjustments->hue);
const struct fixed31_32 cos_hue =
dal_fixed31_32_cos(adjustments->hue);
const struct fixed31_32 multiplier =
dal_fixed31_32_mul(
adjustments->contrast,
adjustments->saturation);
matrix[0] = dal_fixed31_32_mul(
ideal_matrix[0],
adjustments->contrast);
matrix[1] = dal_fixed31_32_mul(
ideal_matrix[1],
adjustments->contrast);
matrix[2] = dal_fixed31_32_mul(
ideal_matrix[2],
adjustments->contrast);
matrix[4] = dal_fixed31_32_mul(
multiplier,
dal_fixed31_32_add(
dal_fixed31_32_mul(
ideal_matrix[8],
sin_hue),
dal_fixed31_32_mul(
ideal_matrix[4],
cos_hue)));
matrix[5] = dal_fixed31_32_mul(
multiplier,
dal_fixed31_32_add(
dal_fixed31_32_mul(
ideal_matrix[9],
sin_hue),
dal_fixed31_32_mul(
ideal_matrix[5],
cos_hue)));
matrix[6] = dal_fixed31_32_mul(
multiplier,
dal_fixed31_32_add(
dal_fixed31_32_mul(
ideal_matrix[10],
sin_hue),
dal_fixed31_32_mul(
ideal_matrix[6],
cos_hue)));
matrix[7] = ideal_matrix[7];
matrix[8] = dal_fixed31_32_mul(
multiplier,
dal_fixed31_32_sub(
dal_fixed31_32_mul(
ideal_matrix[8],
cos_hue),
dal_fixed31_32_mul(
ideal_matrix[4],
sin_hue)));
matrix[9] = dal_fixed31_32_mul(
multiplier,
dal_fixed31_32_sub(
dal_fixed31_32_mul(
ideal_matrix[9],
cos_hue),
dal_fixed31_32_mul(
ideal_matrix[5],
sin_hue)));
matrix[10] = dal_fixed31_32_mul(
multiplier,
dal_fixed31_32_sub(
dal_fixed31_32_mul(
ideal_matrix[10],
cos_hue),
dal_fixed31_32_mul(
ideal_matrix[6],
sin_hue)));
matrix[11] = ideal_matrix[11];
}
void calculate_adjustments(
const struct fixed31_32 *ideal_matrix,
const struct dc_csc_adjustments *adjustments,
struct fixed31_32 *matrix)
{
calculate_adjustments_common(ideal_matrix, adjustments, matrix);
matrix[3] = dal_fixed31_32_add(
ideal_matrix[3],
dal_fixed31_32_mul(
adjustments->brightness,
dal_fixed31_32_from_fraction(86, 100)));
}
void calculate_adjustments_y_only(
const struct fixed31_32 *ideal_matrix,
const struct dc_csc_adjustments *adjustments,
struct fixed31_32 *matrix)
{
calculate_adjustments_common(ideal_matrix, adjustments, matrix);
matrix[3] = dal_fixed31_32_add(
ideal_matrix[3],
adjustments->brightness);
}
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