LIBRETRO: add uae4all_keyboard opt

Author: Apaczer

libretro/core/core-mapper.cpp

@@ -49,6 +49,7 @@ int JOYSTICK_EMULATED=1;
 int gmx,gmy; //gui mouse
 int mouse_wu=0,mouse_wd=0;
 //KEYBOARD
+int KEYBOARD_EMULATED=1;
 char Key_State[512];
 static char old_Key_State[512];
 
@@ -400,9 +401,12 @@ void Process_keyboard()
 {
     int i;
 
-    for(i=0;i<320;i++)
-        Key_State[i]=input_state_cb(0, RETRO_DEVICE_KEYBOARD, 0,i) ? 0x80: 0;
-   
+    if (KEYBOARD_EMULATED==1)
+    {
+        for(i=0;i<320;i++)
+            Key_State[i]=input_state_cb(0, RETRO_DEVICE_KEYBOARD, 0,i) ? 0x80: 0;
+    }
+
     if(memcmp( Key_State,old_Key_State , sizeof(Key_State) ) )
         for(i=0;i<320;i++)
             if(Key_State[i] && Key_State[i]!=old_Key_State[i]  )

libretro/core/libretro-core.cpp

@@ -36,6 +36,7 @@ extern int mainMenu_vpos;
 extern int mainMenu_frameskip;
 
 extern int JOYSTICK_EMULATED;
+extern int KEYBOARD_EMULATED;
 
 extern void DISK_GUI_change (void);
 
@@ -164,6 +165,7 @@ void retro_set_environment(retro_environment_t cb)
       { "uae4all_memchip",   "Chip RAM; default|512 KB|1 MB|1.5 MB|2 MB", },
       { "uae4all_vpos",   "Adjust screen Vertically; default|0|8|16|24|32|40", },
       { "uae4all_joystick",   "Joystick emulation; on|off", },
+      { "uae4all_keyboard",   "Keyboard emulation; on|off", },
       { NULL, NULL },
    };
 
@@ -318,6 +320,15 @@ void update_prefs_retrocfg(void)
       if (strcmp(var.value, "on")  == 0) JOYSTICK_EMULATED = 1;
       if (strcmp(var.value, "off") == 0) JOYSTICK_EMULATED = -1;
    }
+
+   var.key = "uae4all_keyboard";
+   var.value = NULL;
+
+   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
+   {
+      if (strcmp(var.value, "on")  == 0) KEYBOARD_EMULATED = 1;
+      if (strcmp(var.value, "off") == 0) KEYBOARD_EMULATED = -1;
+   }
 #if 0
 
    var.key = "uae4all_resolution";