1 files changed, 47 insertions, 0 deletions
diff --git a/include/libcamera/file_descriptor.h b/include/libcamera/file_descriptor.h
new file mode 100644
index 00000000..8612f865
--- /dev/null
+++ b/include/libcamera/file_descriptor.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * file_descriptor.h - File descriptor wrapper
+ */
+#ifndef __LIBCAMERA_FILE_DESCRIPTOR_H__
+#define __LIBCAMERA_FILE_DESCRIPTOR_H__
+
+#include <memory>
+
+namespace libcamera {
+
+class FileDescriptor final
+{
+public:
+	explicit FileDescriptor(int fd = -1);
+	FileDescriptor(const FileDescriptor &other);
+	FileDescriptor(FileDescriptor &&other);
+	~FileDescriptor();
+
+	FileDescriptor &operator=(const FileDescriptor &other);
+	FileDescriptor &operator=(FileDescriptor &&other);
+
+	bool isValid() const { return fd_ != nullptr; }
+	int fd() const { return fd_ ? fd_->fd() : -1; }
+	FileDescriptor dup() const;
+
+private:
+	class Descriptor
+	{
+	public:
+		Descriptor(int fd);
+		~Descriptor();
+
+		int fd() const { return fd_; }
+
+	private:
+		int fd_;
+	};
+
+	std::shared_ptr<Descriptor> fd_;
+};
+
+} /* namespace libcamera */
+
+#endif /* __LIBCAMERA_FILE_DESCRIPTOR_H__ */