1 files changed, 59 insertions, 0 deletions
diff --git a/include/libcamera/internal/ipc_unixsocket.h b/include/libcamera/internal/ipc_unixsocket.h
new file mode 100644
index 00000000..820d0561
--- /dev/null
+++ b/include/libcamera/internal/ipc_unixsocket.h
@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * ipc_unixsocket.h - IPC mechanism based on Unix sockets
+ */
+
+#ifndef __LIBCAMERA_IPC_UNIXSOCKET_H__
+#define __LIBCAMERA_IPC_UNIXSOCKET_H__
+
+#include <stdint.h>
+#include <sys/types.h>
+#include <vector>
+
+#include <libcamera/event_notifier.h>
+
+namespace libcamera {
+
+class IPCUnixSocket
+{
+public:
+	struct Payload {
+		std::vector<uint8_t> data;
+		std::vector<int32_t> fds;
+	};
+
+	IPCUnixSocket();
+	~IPCUnixSocket();
+
+	int create();
+	int bind(int fd);
+	void close();
+	bool isBound() const;
+
+	int send(const Payload &payload);
+	int receive(Payload *payload);
+
+	Signal<IPCUnixSocket *> readyRead;
+
+private:
+	struct Header {
+		uint32_t data;
+		uint8_t fds;
+	};
+
+	int sendData(const void *buffer, size_t length, const int32_t *fds, unsigned int num);
+	int recvData(void *buffer, size_t length, int32_t *fds, unsigned int num);
+
+	void dataNotifier(EventNotifier *notifier);
+
+	int fd_;
+	bool headerReceived_;
+	struct Header header_;
+	EventNotifier *notifier_;
+};
+
+} /* namespace libcamera */
+
+#endif /* __LIBCAMERA_IPC_UNIXSOCKET_H__ */