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[fceu.git] / drivers / gp2x / lnx-joystick.c

diff --git a/drivers/gp2x/lnx-joystick.c b/drivers/gp2x/lnx-joystick.c
new file mode 100644 (file)
index 0000000..4c2ae6a
--- /dev/null
+++ b/drivers/gp2x/lnx-joystick.c
@@ -0,0 +1,201 @@
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ *  Copyright (C) 2002 Ben Parnell
+ *
+ * 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
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <linux/joystick.h>
+#include "main.h"
+#include "lnx-joystick.h"
+
+int joy[4]={0,0,0,0};
+int joyBMap[4][4];
+
+static int32 joybuttons[4]={0,0,0,0};
+static int32 joyx[4]={0,0,0,0};
+static int32 joyy[4]={0,0,0,0};
+
+static void ConfigJoystick(int z);
+static int fd[4];
+
+#define JOY_A   1
+#define JOY_B   2
+#define JOY_SELECT      4
+#define JOY_START       8
+#define JOY_UP  0x10
+#define JOY_DOWN        0x20
+#define JOY_LEFT        0x40
+#define JOY_RIGHT       0x80
+
+static void UpdateJoyData(int x)
+{
+       struct js_event e;
+
+       while(read(fd[x],&e,sizeof(struct js_event))==sizeof(struct js_event))
+       {
+        e.type&=~JS_EVENT_INIT;
+         if(e.type==JS_EVENT_BUTTON) 
+        {
+          if(e.value)
+           joybuttons[x]|=(1<<e.number);
+          else
+           joybuttons[x]&=~(1<<e.number);
+         }
+        else if(e.type==JS_EVENT_AXIS)
+        {
+         if(e.number==0)
+          joyx[x]=e.value;
+         else if(e.number==1)
+          joyy[x]=e.value;
+        }
+       }
+}
+
+uint32 GetJSOr(void)
+{
+       int x,y;
+       unsigned long ret;
+       ret=0;
+
+       for(x=0;x<4;x++)
+       {
+        int *joym=joyBMap[x];
+
+        if(!joy[x]) continue;
+        UpdateJoyData(x);
+        for(y=0;y<4;y++)
+         if(joybuttons[x]&joym[y]) ret|=(1<<y)<<(x<<3);
+        if(joyx[x]<=-16383) ret|=JOY_LEFT<<(x<<3);
+        else if(joyx[x]>=16383) ret|=JOY_RIGHT<<(x<<3);
+        if(joyy[x]<=-16383) ret|=JOY_UP<<(x<<3);
+        else if(joyy[x]>=16383) ret|=JOY_DOWN<<(x<<3);
+        }
+       return ret;
+}
+
+void KillJoysticks(void)
+{
+       int x;
+       for(x=0;x<4;x++)
+        if(joy[x]) 
+         close(fd[x]);
+}
+
+int InitJoysticks(void)
+{
+       char dbuf[64];
+       int version;
+       int z;
+
+       for(z=0;z<4;z++)
+       {
+        if(!joy[z]) continue;
+        sprintf(dbuf,"/dev/js%d",joy[z]-1);
+        if((fd[z]=open(dbuf,O_RDONLY|O_NONBLOCK))<0) 
+        {
+          printf("Could not open %s.\n",dbuf);
+          joy[z]=0;
+          continue;
+         }
+
+         if(ioctl(fd[z], JSIOCGVERSION, &version)==-1) 
+        {
+         printf("Error using ioctl JSIOCGVERSION on %s.\n",dbuf);
+         joy[z]=0;
+         close(fd[z]);
+         continue;
+        }
+
+         if(!(joyBMap[z][0]|joyBMap[z][1]|joyBMap[z][2]|joyBMap[z][3]))
+          ConfigJoystick(z);
+        }
+
+       return(joy[0]|joy[1]|joy[2]|joy[3]);
+}
+
+#define WNOINPUT(); for(;;){uint8 t; if(read(fileno(stdin),&t,1)==-1) \
+                          {break;}}
+
+static void BConfig(int z,int b)
+{
+  WNOINPUT();
+  for(;;)
+  {
+   uint8 t;
+   if(read(fileno(stdin),&t,1)==-1)
+   {
+    if(errno!=EAGAIN) break;
+   }
+   else
+    break;
+
+   {
+    struct js_event e;
+
+    while(read(fd[z],&e,sizeof(struct js_event))==sizeof(struct js_event))
+    {
+      if(e.type==JS_EVENT_BUTTON)
+      {
+       if(!e.value)
+       {
+       joyBMap[z][b]=1<<e.number;
+       goto endsa;
+       }
+      }
+    }
+   }
+
+  }
+  endsa:
+  WNOINPUT();
+}
+
+void ConfigJoystick(int z)
+{
+ int sa;
+ static char *genb="** Press button for ";
+
+ printf("\n\n Joystick button configuration:\n\n");
+ printf("   Push the button to map to the virtual joystick.\n");
+ printf("   If you do not wish to assign a button, press Enter to skip\n");
+ printf("   that button.\n\n");
+ printf("   Press enter to continue...\n");
+ getchar();
+ printf("****  Configuring joystick %d ****\n\n",z+1);
+
+ sa=fcntl(fileno(stdin),F_GETFL);
+ fcntl(fileno(stdin),F_SETFL,O_NONBLOCK);
+
+  printf("%s\"Select\".\n",genb);
+  BConfig(z,2);
+
+  printf("%s\"Start\".\n",genb);
+  BConfig(z,3);
+
+  printf("%s\"B\".\n",genb);
+  BConfig(z,1);
+
+  printf("%s\"A\".\n",genb);
+  BConfig(z,0);
+
+  fcntl(fileno(stdin),F_SETFL,sa);
+}
+