src/cam

/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 * Copyright (C) 2020, Raspberry Pi (Trading) Ltd.
 *
 * v4l2_pixelformat.cpp - V4L2 Pixel Format
 */

#include "libcamera/internal/v4l2_pixelformat.h"

#include <ctype.h>
#include <map>
#include <string.h>

#include <libcamera/base/log.h>

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

#include "libcamera/internal/formats.h"

/**
 * \file v4l2_pixelformat.h
 * \brief V4L2 Pixel Format
 */

namespace libcamera {

LOG_DECLARE_CATEGORY(V4L2)

/**
 * \class V4L2PixelFormat
 * \brief V4L2 pixel format FourCC wrapper
 *
 * The V4L2PixelFormat class describes the pixel format of a V4L2 buffer. It
 * wraps the V4L2 numerical FourCC, and shall be used in all APIs that deal with
 * V4L2 pixel formats. Its purpose is to prevent unintentional confusion of
 * V4L2 and DRM FourCCs in code by catching implicit conversion attempts at
 * compile time.
 *
 * To achieve this goal, construction of a V4L2PixelFormat from an integer value
 * is explicit. To retrieve the integer value of a V4L2PixelFormat, both the
 * explicit value() and implicit uint32_t conversion operators may be used.
 */

namespace {

const std::map<V4L2PixelFormat, V4L2PixelFormat::Info> vpf2pf{
	/* RGB formats. */
	{ V4L2PixelFormat(V4L2_PIX_FMT_RGB565),
		{ formats::RGB565, "16-bit RGB 5-6-5" } },
	{ V4L2PixelFormat(V4L2_PIX_FMT_RGB565X),
		{ formats::RGB565_BE, "16-bit RGB 5-6-5 BE" } },
	{ V4L2PixelFormat(V4L2_PIX_FMT_RGB24),
		{ formats::BGR888, "24-bit RGB 8-8-8" } },
	{ V4L2PixelFormat(V4L2_PIX_FMT_BGR24),
		{ formats::RGB888, "24-bit BGR 8-8-8" } },
	{ V4L2PixelFormat(V4L2_PIX_FMT_XBGR32),
		{ formats::XRGB8888, "32-bit BGRX 8-8-8-8" } },
	{ V4L2PixelFormat(V4L2_PIX_FMT_XRGB32),
		{ formats::BGRX8888, "32-bit XRGB 8-8-8-8" } },
	{ V4L2PixelFormat(V4L2_PIX_FMT_RGBX32),
		{ formats::XBGR8888, "32-bit RGBX 8-8-8-8" } },
	{ V4L2PixelFormat(V4L2_PIX_FMT_RGBA32),
		{ formats::ABGR8888, "32-bit RGBA 8-8-8-8" } },
	{ V4L2PixelFormat(V4L2_PIX_FMT_ABGR32),
		{ formats::ARGB8888, "32-bit BGRA 8-8-8-8" } },
	{ V4L2PixelFormat(V4L2_PIX_FMT_ARGB32),
		{ formats::BGRA8888, "32-bit ARGB 8-8-8-8" } },
	{ V4L2PixelFormat(V4L2_PIX_FMT_BGRA32),
		{ formats::RGBA8888, "32-bit ABGR 8-8-8-8" } },

	/* YUV packed formats. */
	{ V4L2PixelFormat(V4L2_PIX_FMT_YUYV),
		{ formats::YUYV, "YUYV 4:2:2" } },
	{ V4L2PixelFormat(V4L2_PIX_FMT_YVYU),
		{ formats::YVYU, "YVYU 4:2:2" } },
	{ V4L2PixelFormat(V4L2_PIX_FMT_UYVY),
		{ formats::UYVY, "UYVY 4:2:2" } },
Mode	Name	Size
-rw-r--r--	buffer_writer.cpp	2296	log plain
-rw-r--r--	buffer_writer.h	632	log plain
-rw-r--r--	capture.cpp	5252	log plain
-rw-r--r--	capture.h	1197	log plain
-rw-r--r--	event_loop.cpp	1408	log plain
-rw-r--r--	event_loop.h	715	log plain
-rw-r--r--	main.cpp	9267	log plain
-rw-r--r--	main.h	420	log plain
-rw-r--r--	meson.build	615	log plain
-rw-r--r--	options.cpp	11753	log plain
-rw-r--r--	options.h	3035	log plain
-rw-r--r--	stream_options.cpp	3212	log plain
-rw-r--r--	stream_options.h	764	log plain