Merge commit 'v3.3.0' into upstream

[debian/gnuradio] / usrp / host / include / usrp / usrp_bytesex.h

diff --git a/usrp/host/include/usrp/usrp_bytesex.h b/usrp/host/include/usrp/usrp_bytesex.h
new file mode 100644 (file)
index 0000000..331db31
--- /dev/null
+++ b/usrp/host/include/usrp/usrp_bytesex.h
@@ -0,0 +1,108 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004 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_USRP_BYTESEX_H
+#define INCLUDED_USRP_BYTESEX_H
+
+/*!
+ * \brief routines for convertering between host and usrp byte order
+ *
+ * Prior to including this file, the user must include "config.h"
+ * which will or won't define WORDS_BIGENDIAN based on the
+ * result of the AC_C_BIGENDIAN autoconf test.
+ */
+
+#ifdef HAVE_BYTESWAP_H
+#include <byteswap.h>
+#else
+
+#warning Using non-portable code (likely wrong other than ILP32).
+
+static inline unsigned short int
+bswap_16 (unsigned short int x)
+{
+  return ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8));
+}
+
+static inline unsigned int
+bswap_32 (unsigned int x)
+{
+  return ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >>  8) \
+        | (((x) & 0x0000ff00) <<  8) | (((x) & 0x000000ff) << 24));
+}
+#endif
+
+
+#ifdef WORDS_BIGENDIAN
+
+static inline unsigned int
+host_to_usrp_u32 (unsigned int x)
+{
+  return bswap_32(x);
+}
+
+static inline unsigned int
+usrp_to_host_u32 (unsigned int x)
+{
+  return bswap_32(x);
+}
+
+static inline short int
+host_to_usrp_short (short int x)
+{
+  return bswap_16 (x);
+}
+
+static inline short int
+usrp_to_host_short (short int x)
+{
+  return bswap_16 (x);
+}
+
+#else
+
+static inline unsigned int
+host_to_usrp_u32 (unsigned int x)
+{
+  return x;
+}
+
+static inline unsigned int
+usrp_to_host_u32 (unsigned int x)
+{
+  return x;
+}
+
+static inline short int
+host_to_usrp_short (short int x)
+{
+  return x;
+}
+
+static inline short int
+usrp_to_host_short (unsigned short int x)
+{
+  return x;
+}
+
+#endif
+
+#endif /* INCLUDED_USRP_BYTESEX_H */