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[vlc] / include / mtime.h

diff --git a/include/mtime.h b/include/mtime.h
index b4ea319c310cc0cb3ac125bbb302085b2cf6b4b5..b4cd66574ac17c467b5a26b8d1c1738a25860e4f 100644 (file)
--- a/include/mtime.h
+++ b/include/mtime.h
@@ -1,7 +1,5 @@
-/*******************************************************************************
- * mtime.h: high rezolution time management functions
- * (c)1999 VideoLAN
- *******************************************************************************
+/*****************************************************************************
+ * mtime.h: high resolution time management functions
  * This header provides portable high precision time management functions,
  * which should be the only ones used in other segments of the program, since
  * functions like gettimeofday() and ftime() are not always supported.
@@ -9,46 +7,67 @@
  * interfaces to system calls and have to be called frequently.
  * 'm' stands for 'micro', since maximum resolution is the microsecond.
  * Functions prototyped are implemented in interface/mtime.c.
- *******************************************************************************
+ *****************************************************************************
+ * Copyright (C) 1996, 1997, 1998, 1999, 2000 VideoLAN
+ *
+ * Authors:
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
  * Required headers:
  *  none
  * this header includes inline functions
- *******************************************************************************/
+ *****************************************************************************/
 
-/*******************************************************************************
+/*****************************************************************************
  * mtime_t: high precision date or time interval
- *******************************************************************************
+ *****************************************************************************
  * Store an high precision date or time interval. The maximum precision is the
  * micro-second, and a 64 bits integer is used to avoid any overflow (maximum
- * time interval is then 584542 years, which should be length enough for any
+ * time interval is then 292271 years, which should be length enough for any
  * video). Date are stored as a time interval since a common date.
- * Note than date and time intervals can be manipulated using regular arithmetic
+ * Note that date and time intervals can be manipulated using regular arithmetic
  * operators, and that no special functions are required.
- *******************************************************************************/
-typedef u64 mtime_t;
+ *****************************************************************************/
+typedef s64 mtime_t;
 
-/*******************************************************************************
+/*****************************************************************************
  * LAST_MDATE: date which will never happen
- *******************************************************************************
+ *****************************************************************************
  * This date can be used as a 'never' date, to mark missing events in a function
  * supposed to return a date, such as nothing to display in a function
  * returning the date of the first image to be displayed. It can be used in
  * comparaison with other values: all existing dates will be earlier.
- *******************************************************************************/
-#define LAST_MDATE          ((mtime_t) -1)
+ *****************************************************************************/
+#define LAST_MDATE ((mtime_t)((u64)(-1)/2))
 
-/*******************************************************************************
+/*****************************************************************************
  * MSTRTIME_MAX_SIZE: maximum possible size of mstrtime
- *******************************************************************************
+ *****************************************************************************
  * This values is the maximal possible size of the string returned by the
- * mstrtime() function, including the final '\0'. It should be used to allocate
- * the buffer.
- *******************************************************************************/
-#define MSTRTIME_MAX_SIZE   20
+ * mstrtime() function, including '-' and the final '\0'. It should be used to
+ * allocate the buffer.
+ *****************************************************************************/
+#define MSTRTIME_MAX_SIZE 22
 
-/*******************************************************************************
+/*****************************************************************************
  * Prototypes
- *******************************************************************************/
+ *****************************************************************************/
 char *  mstrtime ( char *psz_buffer, mtime_t date );
 mtime_t mdate    ( void );
 void    mwait    ( mtime_t date );