1 files changed, 91 insertions, 0 deletions
diff --git a/gnuradio-runtime/include/gnuradio/message.h b/gnuradio-runtime/include/gnuradio/message.h
new file mode 100644
index 0000000000..0fda2d9c8c
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+++ b/gnuradio-runtime/include/gnuradio/message.h
@@ -0,0 +1,91 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005,2013 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef INCLUDED_GR_MESSAGE_H
+#define INCLUDED_GR_MESSAGE_H
+
+#include <gnuradio/api.h>
+#include <gnuradio/types.h>
+#include <string>
+
+namespace gr {
+
+  /*!
+   * \brief Message class.
+   *
+   * \ingroup misc
+   * The ideas and method names for adjustable message length were
+   * lifted from the click modular router "Packet" class.
+   */
+  class GR_RUNTIME_API message
+  {
+  public:
+    typedef boost::shared_ptr<message> sptr;
+
+  private:
+    sptr         d_next;	// link field for msg queue
+    long	 d_type;	// type of the message
+    double	 d_arg1;	// optional arg1
+    double 	 d_arg2;	// optional arg2
+
+    unsigned char *d_buf_start;	// start of allocated buffer
+    unsigned char *d_msg_start;	// where the msg starts
+    unsigned char *d_msg_end;	// one beyond end of msg
+    unsigned char *d_buf_end;	// one beyond end of allocated buffer
+
+    message(long type, double arg1, double arg2, size_t length);
+
+    friend class msg_queue;
+
+    unsigned char *buf_data() const { return d_buf_start; }
+    size_t buf_len() const { return d_buf_end - d_buf_start; }
+
+  public:
+    /*!
+     * \brief public constructor for message
+     */
+    static sptr make(long type = 0, double arg1 = 0, double arg2 = 0, size_t length = 0);
+
+    static sptr make_from_string(const std::string s, long type = 0,
+                                 double arg1 = 0, double arg2 = 0);
+
+
+    ~message();
+
+    long type() const   { return d_type; }
+    double arg1() const { return d_arg1; }
+    double arg2() const { return d_arg2; }
+
+    void set_type(long type)   { d_type = type; }
+    void set_arg1(double arg1) { d_arg1 = arg1; }
+    void set_arg2(double arg2) { d_arg2 = arg2; }
+
+    unsigned char *msg() const { return d_msg_start; }
+    size_t length() const { return d_msg_end - d_msg_start; }
+    std::string to_string() const;
+  };
+
+  GR_RUNTIME_API long message_ncurrently_allocated();
+
+} /* namespace gr */
+
+#endif /* INCLUDED_GR_MESSAGE_H */