code compiles with new structure

include/wrp_sdk/async_io/msg_buffer.hpp

@@ -0,0 +1,69 @@
+/**
+ * @brief MAVConn message buffer class (internal)
+ * @file msgbuffer.hpp
+ * @author Vladimir Ermakov <vooon341@gmail.com>
+ */
+/*
+ * libmavconn
+ * Copyright 2014,2015,2016 Vladimir Ermakov, All rights reserved.
+ *
+ * This file is part of the mavros package and subject to the license terms
+ * in the top-level LICENSE file of the mavros repository.
+ * https://github.com/mavlink/mavros/tree/master/LICENSE.md
+ */
+
+#pragma once
+
+#include <sys/types.h>
+#include <cstdint>
+#include <cstring>
+#include <cassert>
+
+namespace wescore
+{
+
+/**
+ * @brief Message buffer for internal use in libmavconn
+ */
+struct MsgBuffer
+{
+    //! Maximum buffer size with padding for CRC bytes (280 + padding)
+    static constexpr ssize_t MAX_PACKET_LEN = 255;
+    static constexpr ssize_t MAX_SIZE = MAX_PACKET_LEN + 16;
+    uint8_t data[MAX_SIZE];
+    ssize_t len;
+    ssize_t pos;
+
+    MsgBuffer() : pos(0),
+                  len(0)
+    {
+    }
+    
+    /**
+	 * @brief Buffer constructor for send_bytes()
+	 * @param[in] nbytes should be less than MAX_SIZE
+	 */
+    MsgBuffer(const uint8_t *bytes, ssize_t nbytes) : pos(0),
+                                                      len(nbytes)
+    {
+        assert(0 < nbytes && nbytes < MAX_SIZE);
+        std::memcpy(data, bytes, nbytes);
+    }
+
+    virtual ~MsgBuffer()
+    {
+        pos = 0;
+        len = 0;
+    }
+
+    uint8_t *dpos()
+    {
+        return data + pos;
+    }
+
+    ssize_t nbytes()
+    {
+        return len - pos;
+    }
+};
+} // namespace wescore