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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * formats.h - libcamera image formats
 */

#ifndef __LIBCAMERA_INTERNAL_FORMATS_H__
#define __LIBCAMERA_INTERNAL_FORMATS_H__

#include <array>
#include <map>
#include <vector>

#include <libcamera/geometry.h>
#include <libcamera/pixel_format.h>

#include "libcamera/internal/v4l2_pixelformat.h"

namespace libcamera {

class PixelFormatInfo
{
public:
	enum ColourEncoding {
		ColourEncodingRGB,
		ColourEncodingYUV,
		ColourEncodingRAW,
	};

	struct Plane {
		unsigned int bytesPerGroup;
		unsigned int verticalSubSampling;
	};

	bool isValid() const { return format.isValid(); }

	static const PixelFormatInfo &info(const PixelFormat &format);
	static const PixelFormatInfo &info(const V4L2PixelFormat &format);
	static const PixelFormatInfo &info(const std::string &name);

	unsigned int stride(unsigned int width, unsigned int plane,
			    unsigned int align = 1) const;
	unsigned int planeSize(const Size &size, unsigned int plane,
			       unsigned int align = 1) const;
	unsigned int planeSize(unsigned int height, unsigned int plane,
			       unsigned int stride) const;