bayer_format.h

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2020, Raspberry Pi Ltd
 *
 * Bayer Pixel Format
 */

#pragma once

#include <ostream>
#include <stdint.h>
#include <string>

#include <libcamera/pixel_format.h>

#include "libcamera/internal/v4l2_pixelformat.h"

namespace libcamera {

enum class Transform;

class BayerFormat
{
public:
    enum Order : uint8_t {
        BGGR = 0,
        GBRG = 1,
        GRBG = 2,
        RGGB = 3,
        MONO = 4
    };

    enum class Packing : uint16_t {
        None = 0,
        CSI2 = 1,
        IPU3 = 2,
        PISP1 = 3,
        PISP2 = 4,
    };

    constexpr BayerFormat()
        : order(Order::BGGR), bitDepth(0), packing(Packing::None)
    {
    }

    constexpr BayerFormat(Order o, uint8_t b, Packing p)
        : order(o), bitDepth(b), packing(p)
    {
    }

    static const BayerFormat &fromMbusCode(unsigned int mbusCode);
    bool isValid() const { return bitDepth != 0; }

    std::string toString() const;

    V4L2PixelFormat toV4L2PixelFormat() const;
    static BayerFormat fromV4L2PixelFormat(V4L2PixelFormat v4l2Format);
    PixelFormat toPixelFormat() const;
    static BayerFormat fromPixelFormat(PixelFormat format);
    BayerFormat transform(Transform t) const;

    Order order;
    uint8_t bitDepth;

    Packing packing;
};

bool operator==(const BayerFormat &lhs, const BayerFormat &rhs);
static inline bool operator!=(const BayerFormat &lhs, const BayerFormat &rhs)
{
    return !(lhs == rhs);
}

std::ostream &operator<<(std::ostream &out, const BayerFormat &f);

} /* namespace libcamera */