Index: Makefile
===================================================================
--- Makefile	(revision 28494)
+++ Makefile    (working copy)
@@ -433,6 +433,7 @@
                                         stream/realrtsp/xbuffer.c \
 
 SRCS_COMMON-$(PNG)                   += libmpcodecs/vd_mpng.c
+SRCS_COMMON-$(PRIORITY)              += osdep/priority.c
 SRCS_COMMON-$(PVR)                   += stream/stream_pvr.c
 SRCS_COMMON-$(QTX_CODECS)            += libmpcodecs/ad_qtaudio.c \
                                         libmpcodecs/vd_qtvideo.c
Index: configure
===================================================================
--- configure	(revision 28494)
+++ configure   (working copy)
@@ -718,9 +722,11 @@
 _rpath=no
 _asmalign_pot=auto
 _stream_cache=yes
+_priority=no
 def_dos_paths="#define HAVE_DOS_PATHS 0"
 def_stream_cache="#define CONFIG_STREAM_CACHE 1"
 def_pthread_cache="#undef PTHREAD_CACHE"
+def_priority="#undef CONFIG_PRIORITY"
 _need_shmem=yes
 for ac_option do
   case "$ac_option" in
@@ -1433,7 +1443,9 @@
   _ld_extra="$_ld_extra -lwinmm"
   _pe_executable=yes
   _timer=timer-win2.c
+  _priority=yes
   def_dos_paths="#define HAVE_DOS_PATHS 1"
+  def_priority="#define CONFIG_PRIORITY 1"
 fi
 
 if mingw32 ; then
@@ -1456,7 +1468,9 @@
   _exesuf=".exe"
   _getch=getch2-os2.c
   _need_shmem=no
+  _priority=yes
   def_dos_paths="#define HAVE_DOS_PATHS 1"
+  def_priority="#define CONFIG_PRIORITY 1"
 fi
 
 for I in "$TMPDIR" "$TEMPDIR" "/tmp" ; do
@@ -8078,6 +8141,7 @@
 PE_EXECUTABLE = $_pe_executable
 PNG = $_png
 PNM = $_pnm
+PRIORITY = $_priority
 PULSE = $_pulse
 PVR = $_pvr
 QTX_CODECS = $_qtx
@@ -8343,6 +8407,7 @@
 $def_macosx_finder
 $def_maemo
 $def_named_asm_args
+$def_priority
 $def_quicktime
 $def_restrict_keyword
 $def_rtc
Index: DOCS/man/en/mplayer.1
===================================================================
--- DOCS/man/en/mplayer.1   (revision 28494)
+++ DOCS/man/en/mplayer.1   (working copy)
@@ -732,9 +732,9 @@
 handle carriage return (i.e.\& \\r).
 .
 .TP
-.B \-priority <prio> (Windows only)
+.B \-priority <prio> (Windows and OS/2 only)
 Set process priority for MPlayer according to the predefined
-priorities available under Windows.
+priorities available under Windows and OS/2.
 Possible values of <prio>:
 .RSs
 idle|belownormal|normal|abovenormal|high|realtime
Index: mplayer.c
===================================================================
--- mplayer.c	(revision 28494)
+++ mplayer.c   (working copy)
@@ -84,9 +84,7 @@
 int enable_mouse_movements=0;
 float start_volume = -1;
 
-#if defined(__MINGW32__) || defined(__CYGWIN__)
-char * proc_priority=NULL;
-#endif
+#include "osdep/priority.h"
 
 char *heartbeat_cmd;
 
@@ -2594,17 +2596,12 @@
 #if defined(__MINGW32__) || defined(__CYGWIN__)
    // request 1ms timer resolution
    timeBeginPeriod(1);
-   if(proc_priority){
-       int i;
-           for(i=0; priority_presets_defs[i].name; i++){
-               if(strcasecmp(priority_presets_defs[i].name, proc_priority) == 0)
-               break;
-       }
-       mp_msg(MSGT_CPLAYER,MSGL_STATUS,MSGTR_SettingProcessPriority,
-               priority_presets_defs[i].name);
-       SetPriorityClass(GetCurrentProcess(), priority_presets_defs[i].prio);
-   }
 #endif 
+
+#ifdef CONFIG_PRIORITY
+    set_priority();
+#endif
+
 #ifndef CONFIG_GUI
     if(use_gui){
       mp_msg(MSGT_CPLAYER,MSGL_WARN,MSGTR_NoGui);
Index: osdep/priority.c
===================================================================
--- osdep/priority.c    (revision 0)
+++ osdep/priority.c    (revision 0)
@@ -0,0 +1,91 @@
+/*
+ * implementation of '-priority' for OS/2 and Win32
+ *
+ * Copyright (c) 2009 by KO Myung-Hun (komh@chollian.net)
+ *
+ * This file is part of MPlayer.
+ *
+ * MPlayer 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.
+ *
+ * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifdef __OS2__
+
+#define INCL_DOS
+#include <os2.h>
+
+#define REALTIME_PRIORITY_CLASS     MAKESHORT(0, PRTYC_TIMECRITICAL)
+#define HIGH_PRIORITY_CLASS         MAKESHORT(PRTYD_MAXIMUM, PRTYC_REGULAR)
+#define ABOVE_NORMAL_PRIORITY_CLASS MAKESHORT(PRTYD_MAXIMUM / 2, PRTYC_REGULAR)
+#define NORMAL_PRIORITY_CLASS       MAKESHORT(0, PRTYC_REGULAR)
+#define BELOW_NORMAL_PRIORITY_CLASS MAKESHORT(PRTYD_MAXIMUM, PRTYC_IDLETIME)
+#define IDLE_PRIORITY_CLASS         MAKESHORT(0, PRTYC_IDLETIME)
+
+#else
+
+/* disable Non-underscored versions of non-ANSI functions as otherwise int eof would conflict with eof() */
+#define _UWIN 1
+#include <windows.h>
+
+#endif /* __OS2__ */
+
+#include <string.h>
+
+#include "mp_msg.h"
+#include "help_mp.h"
+
+#include "priority.h"
+
+char *proc_priority = NULL;
+
+void set_priority(void)
+{
+    struct {
+        char* name;
+        int prio;
+    } priority_presets_defs[] = {
+        { "realtime", REALTIME_PRIORITY_CLASS},
+        { "high", HIGH_PRIORITY_CLASS},
+#ifdef ABOVE_NORMAL_PRIORITY_CLASS
+        { "abovenormal", ABOVE_NORMAL_PRIORITY_CLASS},
+#endif
+        { "normal", NORMAL_PRIORITY_CLASS},
+#ifdef BELOW_NORMAL_PRIORITY_CLASS
+        { "belownormal", BELOW_NORMAL_PRIORITY_CLASS},
+#endif
+        { "idle", IDLE_PRIORITY_CLASS},
+        { NULL, NORMAL_PRIORITY_CLASS} /* default */
+    };
+
+    if (proc_priority) {
+        int i;
+
+        for (i = 0; priority_presets_defs[i].name; i++) {
+            if (strcasecmp(priority_presets_defs[i].name, proc_priority) == 0)
+                break;
+        }
+        mp_msg(MSGT_CPLAYER, MSGL_STATUS, MSGTR_SettingProcessPriority,
+               priority_presets_defs[i].name);
+
+#ifdef __OS2__
+        DosSetPriority(PRTYS_PROCESS,
+                       HIBYTE(priority_presets_defs[i].prio),
+                       LOBYTE(priority_presets_defs[i].prio),
+                       0);
+#else
+        SetPriorityClass(GetCurrentProcess(), priority_presets_defs[i].prio);
+#endif
+    }
+}
+
Index: osdep/priority.h
===================================================================
--- osdep/priority.h    (revision 0)
+++ osdep/priority.h    (revision 0)
@@ -0,0 +1,31 @@
+/*
+ * header for implementation of '-priority'
+ *
+ * Copyright (c) 2009 by KO Myung-Hun (komh@chollian.net)
+ *
+ * This file is part of MPlayer.
+ *
+ * MPlayer 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.
+ *
+ * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPLAYER_PRIORITY_H
+#define MPLAYER_PRIORITY_H
+
+extern char *proc_priority;
+
+void set_priority(void);
+
+#endif /* MPLAYER_PRIORITY_H */
+
Index: cfg-common.h
===================================================================
--- cfg-common.h    (revision 28494)
+++ cfg-common.h    (working copy)
@@ -350,25 +350,6 @@
 
 };
 
-#if defined(__MINGW32__) || defined(__CYGWIN__)
-struct {
-  char* name;
-  int prio;
-} priority_presets_defs[] = {
-  { "realtime", REALTIME_PRIORITY_CLASS},
-  { "high", HIGH_PRIORITY_CLASS},
-#ifdef ABOVE_NORMAL_PRIORITY_CLASS
-  { "abovenormal", ABOVE_NORMAL_PRIORITY_CLASS},
-#endif
-  { "normal", NORMAL_PRIORITY_CLASS},
-#ifdef BELOW_NORMAL_PRIORITY_CLASS
-  { "belownormal", BELOW_NORMAL_PRIORITY_CLASS},
-#endif
-  { "idle", IDLE_PRIORITY_CLASS},
-  { NULL, NORMAL_PRIORITY_CLASS} /* default */
-};
-#endif /* defined(__MINGW32__) || defined(__CYGWIN__) */
-
 extern const m_option_t noconfig_opts[];
 
 extern const m_option_t lavc_decode_opts_conf[];
Index: cfg-common-opts.h
===================================================================
--- cfg-common-opts.h   (revision 28494)
+++ cfg-common-opts.h   (working copy)
@@ -3,6 +3,8 @@
 
 #include "config.h"
 
+#include "osdep/priority.h"
+
 // ------------------------- common options --------------------
    {"quiet", &quiet, CONF_TYPE_FLAG, CONF_GLOBAL, 0, 1, NULL},
    {"noquiet", &quiet, CONF_TYPE_FLAG, CONF_GLOBAL, 1, 0, NULL},
@@ -17,7 +19,7 @@
    {"msgcharset", &mp_msg_charset, CONF_TYPE_STRING, CONF_GLOBAL, 0, 0, NULL},
 #endif
    {"include", cfg_include, CONF_TYPE_FUNC_PARAM, CONF_NOSAVE, 0, 0, NULL},
-#if defined(__MINGW32__) || defined(__CYGWIN__)
+#ifdef CONFIG_PRIORITY
    {"priority", &proc_priority, CONF_TYPE_STRING, 0, 0, 0, NULL},
 #endif
    {"noconfig", noconfig_opts, CONF_TYPE_SUBCONFIG, CONF_GLOBAL|CONF_NOCFG|CONF_PRE_PARSE, 0, 0, NULL},
Index: mencoder.c
===================================================================
--- mencoder.c	(revision 28494)
+++ mencoder.c  (working copy)
@@ -139,9 +139,7 @@
 double cur_vout_time_usage=0;
 int benchmark=0;
 
-#if defined(__MINGW32__) || defined(__CYGWIN__)
-char * proc_priority=NULL;
-#endif
+#include "osdep/priority.h"
 
 // A-V sync:
 int delay_corrected=1;
@@ -479,17 +481,8 @@
   }
 }
 
-#if defined(__MINGW32__) || defined(__CYGWIN__)
-  if(proc_priority){
-    int i;
-    for(i=0; priority_presets_defs[i].name; i++){
-      if(strcasecmp(priority_presets_defs[i].name, proc_priority) == 0)
-        break;
-    }
-    mp_msg(MSGT_CPLAYER,MSGL_STATUS,MSGTR_SettingProcessPriority,
-                   priority_presets_defs[i].name);
-    SetPriorityClass(GetCurrentProcess(), priority_presets_defs[i].prio);
-  }
+#ifdef CONFIG_PRIORITY
+  set_priority();
 #endif 
 
 // check font