d92f5f5402
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>
76 lines
1.7 KiB
C++
76 lines
1.7 KiB
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2024, Ideas On Board
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* Copyright (C) 2024-2026, Red Hat Inc.
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*
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* Color correction matrix
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*/
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#include "ccm.h"
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#include <libcamera/base/log.h>
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#include <libcamera/base/utils.h>
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#include <libcamera/control_ids.h>
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#include "libcamera/internal/matrix.h"
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namespace {
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constexpr unsigned int kTemperatureThreshold = 100;
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}
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namespace libcamera {
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namespace ipa::soft::algorithms {
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LOG_DEFINE_CATEGORY(IPASoftCcm)
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int Ccm::init([[maybe_unused]] IPAContext &context, const YamlObject &tuningData)
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{
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int ret = ccm_.readYaml(tuningData["ccms"], "ct", "ccm");
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if (ret < 0) {
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LOG(IPASoftCcm, Error)
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<< "Failed to parse 'ccm' parameter from tuning file.";
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return ret;
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}
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context.ccmEnabled = true;
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return 0;
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}
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void Ccm::prepare(IPAContext &context, [[maybe_unused]] const uint32_t frame,
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IPAFrameContext &frameContext, [[maybe_unused]] DebayerParams *params)
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{
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const unsigned int ct = context.activeState.awb.temperatureK;
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/* Change CCM only on bigger temperature changes. */
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if (!currentCcm_ ||
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utils::abs_diff(ct, lastCt_) >= kTemperatureThreshold) {
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currentCcm_ = ccm_.getInterpolated(ct);
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lastCt_ = ct;
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context.activeState.matrixChanged = true;
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}
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context.activeState.combinedMatrix =
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currentCcm_.value() * context.activeState.combinedMatrix;
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frameContext.ccm = currentCcm_.value();
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}
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void Ccm::process([[maybe_unused]] IPAContext &context,
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[[maybe_unused]] const uint32_t frame,
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IPAFrameContext &frameContext,
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[[maybe_unused]] const SwIspStats *stats,
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ControlList &metadata)
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{
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metadata.set(controls::ColourCorrectionMatrix, frameContext.ccm.data());
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}
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REGISTER_IPA_ALGORITHM(Ccm, "Ccm")
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} /* namespace ipa::soft::algorithms */
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} /* namespace libcamera */
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