a1a6253ff9
Pass contrastExp as calculated in lut to debayer params not the raw contrast. This way we calculate contrastExp once per frame in lut and pass the calculated value into the shaders, instead of passing contrast and calculating contrastExp once per pixel in the shaders. Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Reviewed-by: Milan Zamazal <mzamazal@redhat.com> Tested-by: Robert Mader <robert.mader@collabora.com> Tested-by: Hans de Goede <johannes.goede@oss.qualcomm.com> # ThinkPad T14s gen 6 (arm64) ov02c10 + X1c gen 12 ov08x40 Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com> # Lenovo X13s Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
66 lines
1.4 KiB
C++
66 lines
1.4 KiB
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2023-2025 Red Hat Inc.
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*
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* Authors:
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* Hans de Goede <hdegoede@redhat.com>
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*
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* DebayerParams header
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*/
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#pragma once
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#include <array>
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#include <stdint.h>
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#include "libcamera/internal/matrix.h"
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#include "libcamera/internal/vector.h"
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namespace libcamera {
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struct DebayerParams {
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static constexpr unsigned int kRGBLookupSize = 256;
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struct CcmColumn {
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int16_t r;
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int16_t g;
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int16_t b;
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};
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using LookupTable = std::array<uint8_t, kRGBLookupSize>;
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using CcmLookupTable = std::array<CcmColumn, kRGBLookupSize>;
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/*
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* Color lookup tables when CCM is not used.
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*
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* Each color of a debayered pixel is amended by the corresponding
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* value in the given table.
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*/
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LookupTable red;
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LookupTable green;
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LookupTable blue;
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/*
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* Color and gamma lookup tables when CCM is used.
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*
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* Each of the CcmLookupTable's corresponds to a CCM column; together they
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* make a complete 3x3 CCM lookup table. The CCM is applied on debayered
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* pixels and then the gamma lookup table is used to set the resulting
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* values of all the three colors.
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*/
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CcmLookupTable redCcm;
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CcmLookupTable greenCcm;
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CcmLookupTable blueCcm;
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LookupTable gammaLut;
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/*
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* Per frame corrections as calculated by the IPA
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*/
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Matrix<float, 3, 3> ccm;
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RGB<float> blackLevel;
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float gamma;
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double contrastExp;
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};
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} /* namespace libcamera */
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