# SPDX-License-Identifier: CC0-1.0 if not get_option('v4l2') v4l2_enabled = false subdir_done() endif v4l2_enabled = true v4l2_compat_sources = files([ 'v4l2_camera.cpp', 'v4l2_camera_file.cpp', 'v4l2_camera_proxy.cpp', 'v4l2_compat.cpp', 'v4l2_compat_manager.cpp', ]) v4l2_compat_cpp_args = [ # Meson enables large file support unconditionally, which redirect file # operations to 64-bit versions. This results in some symbols being # renamed, for instance open() being renamed to open64(). As the V4L2 # adaptation wrapper needs to provide both 32-bit and 64-bit versions of # file operations, disable transparent large file support. '-U_FILE_OFFSET_BITS', '-D_FILE_OFFSET_BITS=32', '-D_LARGEFILE64_SOURCE', '-fvisibility=hidden', ] v4l2_compat = shared_library('v4l2-compat', v4l2_compat_sources, name_prefix : '', install : true, dependencies : [libcamera_private, libdl], cpp_args : v4l2_compat_cpp_args) ion value='imx8mp/extensible-format-v8'>imx8mp/extensible-format-v8 Jacopo Mondi's clone of libcameragit repository hosting on libcamera.org
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path: root/src/v4l2/v4l2_compat_manager.h
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * v4l2_compat_manager.h - V4L2 compatibility manager
 */

#ifndef __V4L2_COMPAT_MANAGER_H__
#define __V4L2_COMPAT_MANAGER_H__

#include <fcntl.h>
#include <map>
#include <memory>
#include <sys/mman.h>
#include <sys/types.h>
#include <vector>

#include <libcamera/camera_manager.h>

#include "v4l2_camera_proxy.h"

using namespace libcamera;

class V4L2CompatManager
{
public:
	struct FileOperations {
		using openat_func_t = int (*)(int dirfd, const char *path,
					      int oflag, ...);
		using dup_func_t = int (*)(int oldfd);
		using close_func_t = int (*)(int fd);