1 files changed, 57 insertions, 0 deletions
diff --git a/include/libcamera/internal/device_enumerator.h b/include/libcamera/internal/device_enumerator.h
new file mode 100644
index 00000000..433e357a
--- /dev/null
+++ b/include/libcamera/internal/device_enumerator.h
@@ -0,0 +1,57 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2018, Google Inc.
+ *
+ * device_enumerator.h - API to enumerate and find media devices
+ */
+#ifndef __LIBCAMERA_DEVICE_ENUMERATOR_H__
+#define __LIBCAMERA_DEVICE_ENUMERATOR_H__
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <linux/media.h>
+
+namespace libcamera {
+
+class MediaDevice;
+
+class DeviceMatch
+{
+public:
+	DeviceMatch(const std::string &driver);
+
+	void add(const std::string &entity);
+
+	bool match(const MediaDevice *device) const;
+
+private:
+	std::string driver_;
+	std::vector<std::string> entities_;
+};
+
+class DeviceEnumerator
+{
+public:
+	static std::unique_ptr<DeviceEnumerator> create();
+
+	virtual ~DeviceEnumerator();
+
+	virtual int init() = 0;
+	virtual int enumerate() = 0;
+
+	std::shared_ptr<MediaDevice> search(const DeviceMatch &dm);
+
+protected:
+	std::unique_ptr<MediaDevice> createDevice(const std::string &deviceNode);
+	void addDevice(std::unique_ptr<MediaDevice> &&media);
+	void removeDevice(const std::string &deviceNode);
+
+private:
+	std::vector<std::shared_ptr<MediaDevice>> devices_;
+};
+
+} /* namespace libcamera */
+
+#endif	/* __LIBCAMERA_DEVICE_ENUMERATOR_H__ */