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external_libcamera/src/ipa/simple/algorithms/ccm.h
T
Milan Zamazal d92f5f5402 libcamera: ipa: simple: Separate saturation from CCM
Saturation adjustments are implemented using matrix operations.  They
are currently applied to the colour correction matrix.  Let's move them
to a newly introduced separate "Adjust" algorithm.

This separation has the following advantages:

- It allows disabling general colour adjustments algorithms without
  disabling the CCM algorithm.

- It keeps the CCM separated from other corrections.

- It's generally cleaner.

Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Robert Mader <robert.mader@collabora.com>
Signed-off-by: Milan Zamazal <mzamazal@redhat.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2026-01-28 15:20:32 +00:00

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2024-2026, Red Hat Inc.
*
* Color correction matrix
*/
#pragma once
#include <optional>
#include "libcamera/internal/matrix.h"
#include <libipa/interpolator.h>
#include "algorithm.h"
namespace libcamera {
namespace ipa::soft::algorithms {
class Ccm : public Algorithm
{
public:
Ccm() = default;
~Ccm() = default;
int init(IPAContext &context, const YamlObject &tuningData) override;
void prepare(IPAContext &context,
const uint32_t frame,
IPAFrameContext &frameContext,
DebayerParams *params) override;
void process(IPAContext &context, const uint32_t frame,
IPAFrameContext &frameContext,
const SwIspStats *stats,
ControlList &metadata) override;
private:
unsigned int lastCt_;
Interpolator<Matrix<float, 3, 3>> ccm_;
std::optional<Matrix<float, 3, 3>> currentCcm_;
};
} /* namespace ipa::soft::algorithms */
} /* namespace libcamera */