gst_plugins_base/gst/audioconvert/gstfastrandom.h
branchRCL_3
changeset 30 7e817e7e631c
parent 29 567bb019e3e3
--- a/gst_plugins_base/gst/audioconvert/gstfastrandom.h	Tue Aug 31 15:30:33 2010 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,90 +0,0 @@
-/* GStreamer
- * Copyright (C) 2008 Sebastian Dröge <sebastian.droege@collabora.co.uk>
- *
- * gstfastrandom.h: Fast, bad PNRG
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#include <glib.h>
-
-#ifndef __GST_FAST_RANDOM__
-#define __GST_FAST_RANDOM__
-
-/* transform [0..2^32] -> [0..1] */
-#define GST_RAND_DOUBLE_TRANSFORM 2.3283064365386962890625e-10
-
-/* This is the base function, implementing a linear congruential generator
- * and returning a pseudo random number between 0 and 2^32 - 1.
- */
-static inline guint32
-gst_fast_random_uint32 ()
-{
-  static guint32 state = 0xdeadbeef;
-
-  return (state = state * 1103515245 + 12345);
-}
-
-static inline guint32
-gst_fast_random_uint32_range (gint32 start, gint32 end)
-{
-  guint64 tmp = gst_fast_random_uint32 ();
-
-  tmp = (tmp * (end - start)) / G_MAXUINT32 + start;
-
-  return (guint32) tmp;
-}
-
-static inline gint32
-gst_fast_random_int32 (void)
-{
-  return (gint32) gst_fast_random_uint32 ();
-}
-
-static inline gint32
-gst_fast_random_int32_range (gint32 start, gint32 end)
-{
-  gint64 tmp = gst_fast_random_uint32 ();
-
-  tmp = (tmp * (end - start)) / G_MAXUINT32 + start;
-
-  return (gint32) tmp;
-}
-
-static inline gdouble
-gst_fast_random_double (void)
-{
-  gdouble ret;
-
-  ret = gst_fast_random_uint32 () * GST_RAND_DOUBLE_TRANSFORM;
-  ret = (ret + gst_fast_random_uint32 ()) * GST_RAND_DOUBLE_TRANSFORM;
-
-  if (ret >= 1.0)
-    return gst_fast_random_double ();
-
-  return ret;
-}
-
-static inline gdouble
-gst_fast_random_double_range (gdouble start, gdouble end)
-{
-  return gst_fast_random_double () * (end - start) + start;
-}
-
-#undef GST_RAND_DOUBLE_TRANSFORM
-
-#endif /* __GST_FAST_RANDOM__ */
-