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-rw-r--r--include/libcamera/internal/ipc_pipe.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/include/libcamera/internal/ipc_pipe.h b/include/libcamera/internal/ipc_pipe.h
new file mode 100644
index 00000000..c9a84b78
--- /dev/null
+++ b/include/libcamera/internal/ipc_pipe.h
@@ -0,0 +1,69 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2020, Google Inc.
+ *
+ * ipc_pipe.h - Image Processing Algorithm IPC module for IPA proxies
+ */
+#ifndef __LIBCAMERA_INTERNAL_IPA_IPC_H__
+#define __LIBCAMERA_INTERNAL_IPA_IPC_H__
+
+#include <vector>
+
+#include "libcamera/internal/ipc_unixsocket.h"
+
+#include <libcamera/signal.h>
+
+namespace libcamera {
+
+class IPCMessage
+{
+public:
+ struct Header {
+ uint32_t cmd;
+ uint32_t cookie;
+ };
+
+ IPCMessage();
+ IPCMessage(uint32_t cmd);
+ IPCMessage(const Header &header);
+ IPCMessage(const IPCUnixSocket::Payload &payload);
+
+ IPCUnixSocket::Payload payload() const;
+
+ Header &header() { return header_; }
+ std::vector<uint8_t> &data() { return data_; }
+ std::vector<int32_t> &fds() { return fds_; }
+
+ const Header &header() const { return header_; }
+ const std::vector<uint8_t> &data() const { return data_; }
+ const std::vector<int32_t> &fds() const { return fds_; }
+
+private:
+ Header header_;
+
+ std::vector<uint8_t> data_;
+ std::vector<int32_t> fds_;
+};
+
+class IPCPipe
+{
+public:
+ IPCPipe();
+ virtual ~IPCPipe();
+
+ bool isConnected() const { return connected_; }
+
+ virtual int sendSync(const IPCMessage &in,
+ IPCMessage *out) = 0;
+
+ virtual int sendAsync(const IPCMessage &data) = 0;
+
+ Signal<const IPCMessage &> recv;
+
+protected:
+ bool connected_;
+};
+
+} /* namespace libcamera */
+
+#endif /* __LIBCAMERA_INTERNAL_IPA_IPC_H__ */