tone_mapping.h

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2021, Google inc.
 *
 * IPU3 ToneMapping and Gamma control
 */
 
#pragma once
 
#include <linux/intel-ipu3.h>
 
#include <libipa/fixedpoint.h>
#include <libipa/gamma.h>
 
#include "algorithm.h"
 
namespace libcamera {
 
namespace ipa::ipu3::algorithms {
 
class ToneMapping : public Algorithm
{
public:
    ToneMapping();
 
    int init(IPAContext &context, const ValueNode &tuningData) override;
    int configure(IPAContext &context, const IPAConfigInfo &configInfo) override;
    void queueRequest(IPAContext &context, const uint32_t frame,
              IPAFrameContext &frameContext,
              const ControlList &controls) override;
    void prepare(IPAContext &context, const uint32_t frame,
             IPAFrameContext &frameContext, ipu3_uapi_params *params) override;
    void process(IPAContext &context, const uint32_t frame,
             IPAFrameContext &frameContext,
             const ipu3_uapi_stats_3a *stats,
             ControlList &metadata) override;
 
private:
    static constexpr unsigned int kNumLutNodes = IPU3_UAPI_GAMMA_CORR_LUT_ENTRIES;
    GammaAlgorithm<kNumLutNodes, UQ<0, 13>> gammaAlgo_;
};
 
} /* namespace ipa::ipu3::algorithms */
 
} /* namespace libcamera */