src/video/ps2gs/SDL_gsevents.c
changeset 70 f590dd383b5d
child 132 2604a7be65af
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/ps2gs/SDL_gsevents.c	Sat Jun 16 03:17:45 2001 +0000
@@ -0,0 +1,983 @@
+/*
+	SDL - Simple DirectMedia Layer
+	Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
+
+	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
+	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+	Sam Lantinga
+	slouken@devolution.com
+*/
+
+#ifdef SAVE_RCSID
+static char rcsid =
+ "@(#) $Id$";
+#endif
+
+/* Handle the event stream, converting console events into SDL events */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/ioctl.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+
+/* For parsing /proc */
+#include <dirent.h>
+#include <ctype.h>
+
+#include <linux/vt.h>
+#include <linux/kd.h>
+#include <linux/keyboard.h>
+
+#include "SDL.h"
+#include "SDL_mutex.h"
+#include "SDL_sysevents.h"
+#include "SDL_sysvideo.h"
+#include "SDL_events_c.h"
+#include "SDL_gsvideo.h"
+#include "SDL_gsevents_c.h"
+#include "SDL_gskeys.h"
+
+#ifndef GPM_NODE_FIFO
+#define GPM_NODE_FIFO	"/dev/gpmdata"
+#endif
+
+/* The translation tables from a console scancode to a SDL keysym */
+#define NUM_VGAKEYMAPS	(1<<KG_CAPSSHIFT)
+static Uint16 vga_keymap[NUM_VGAKEYMAPS][NR_KEYS];
+static SDLKey keymap[128];
+static Uint16 keymap_temp[128]; /* only used at startup */
+static SDL_keysym *TranslateKey(int scancode, SDL_keysym *keysym);
+
+/* Ugh, we have to duplicate the kernel's keysym mapping code...
+   Oh, it's not so bad. :-)
+
+   FIXME: Add keyboard LED handling code
+ */
+static void GS_vgainitkeymaps(int fd)
+{
+	struct kbentry entry;
+	int map, i;
+
+	/* Don't do anything if we are passed a closed keyboard */
+	if ( fd < 0 ) {
+		return;
+	}
+
+	/* Load all the keysym mappings */
+	for ( map=0; map<NUM_VGAKEYMAPS; ++map ) {
+		memset(vga_keymap[map], 0, NR_KEYS*sizeof(Uint16));
+		for ( i=0; i<NR_KEYS; ++i ) {
+			entry.kb_table = map;
+			entry.kb_index = i;
+			if ( ioctl(fd, KDGKBENT, &entry) == 0 ) {
+				/* fill keytemp. This replaces SDL_fbkeys.h */
+				if ( (map == 0) && (i<128) ) {
+					keymap_temp[i] = entry.kb_value;
+				}
+				/* The "Enter" key is a special case */
+				if ( entry.kb_value == K_ENTER ) {
+					entry.kb_value = K(KT_ASCII,13);
+				}
+				/* Handle numpad specially as well */
+				if ( KTYP(entry.kb_value) == KT_PAD ) {
+					switch ( entry.kb_value ) {
+					case K_P0:
+					case K_P1:
+					case K_P2:
+					case K_P3:
+					case K_P4:
+					case K_P5:
+					case K_P6:
+					case K_P7:
+					case K_P8:
+					case K_P9:
+						vga_keymap[map][i]=entry.kb_value;
+						vga_keymap[map][i]+= '0';
+						break;
+										case K_PPLUS:
+						vga_keymap[map][i]=K(KT_ASCII,'+');
+						break;
+										case K_PMINUS:
+						vga_keymap[map][i]=K(KT_ASCII,'-');
+						break;
+										case K_PSTAR:
+						vga_keymap[map][i]=K(KT_ASCII,'*');
+						break;
+										case K_PSLASH:
+						vga_keymap[map][i]=K(KT_ASCII,'/');
+						break;
+										case K_PENTER:
+						vga_keymap[map][i]=K(KT_ASCII,'\r');
+						break;
+										case K_PCOMMA:
+						vga_keymap[map][i]=K(KT_ASCII,',');
+						break;
+										case K_PDOT:
+						vga_keymap[map][i]=K(KT_ASCII,'.');
+						break;
+					default:
+						break;
+					}
+				}
+				/* Do the normal key translation */
+				if ( (KTYP(entry.kb_value) == KT_LATIN) ||
+					 (KTYP(entry.kb_value) == KT_ASCII) ||
+					 (KTYP(entry.kb_value) == KT_LETTER) ) {
+					vga_keymap[map][i] = entry.kb_value;
+				}
+			}
+		}
+	}
+}
+
+int GS_InGraphicsMode(_THIS)
+{
+	return((keyboard_fd >= 0) && (saved_kbd_mode >= 0));
+}
+
+int GS_EnterGraphicsMode(_THIS)
+{
+	struct termios keyboard_termios;
+
+	/* Set medium-raw keyboard mode */
+	if ( (keyboard_fd >= 0) && !GS_InGraphicsMode(this) ) {
+
+		/* Switch to the correct virtual terminal */
+		if ( current_vt > 0 ) {
+			struct vt_stat vtstate;
+
+			if ( ioctl(keyboard_fd, VT_GETSTATE, &vtstate) == 0 ) {
+				saved_vt = vtstate.v_active;
+			}
+			if ( ioctl(keyboard_fd, VT_ACTIVATE, current_vt) == 0 ) {
+				ioctl(keyboard_fd, VT_WAITACTIVE, current_vt);
+			}
+		}
+
+		/* Set the terminal input mode */
+		if ( tcgetattr(keyboard_fd, &saved_kbd_termios) < 0 ) {
+			SDL_SetError("Unable to get terminal attributes");
+			if ( keyboard_fd > 0 ) {
+				close(keyboard_fd);
+			}
+			keyboard_fd = -1;
+			return(-1);
+		}
+		if ( ioctl(keyboard_fd, KDGKBMODE, &saved_kbd_mode) < 0 ) {
+			SDL_SetError("Unable to get current keyboard mode");
+			if ( keyboard_fd > 0 ) {
+				close(keyboard_fd);
+			}
+			keyboard_fd = -1;
+			return(-1);
+		}
+		keyboard_termios = saved_kbd_termios;
+		keyboard_termios.c_lflag &= ~(ICANON | ECHO | ISIG);
+		keyboard_termios.c_iflag &= ~(ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON);
+		keyboard_termios.c_cc[VMIN] = 0;
+		keyboard_termios.c_cc[VTIME] = 0;
+		if (tcsetattr(keyboard_fd, TCSAFLUSH, &keyboard_termios) < 0) {
+			GS_CloseKeyboard(this);
+			SDL_SetError("Unable to set terminal attributes");
+			return(-1);
+		}
+		/* This will fail if we aren't root or this isn't our tty */
+		if ( ioctl(keyboard_fd, KDSKBMODE, K_MEDIUMRAW) < 0 ) {
+			GS_CloseKeyboard(this);
+			SDL_SetError("Unable to set keyboard in raw mode");
+			return(-1);
+		}
+		if ( ioctl(keyboard_fd, KDSETMODE, KD_GRAPHICS) < 0 ) {
+			GS_CloseKeyboard(this);
+			SDL_SetError("Unable to set keyboard in graphics mode");
+			return(-1);
+		}
+	}
+	return(keyboard_fd);
+}
+
+void GS_LeaveGraphicsMode(_THIS)
+{
+	if ( GS_InGraphicsMode(this) ) {
+		ioctl(keyboard_fd, KDSETMODE, KD_TEXT);
+		ioctl(keyboard_fd, KDSKBMODE, saved_kbd_mode);
+		tcsetattr(keyboard_fd, TCSAFLUSH, &saved_kbd_termios);
+		saved_kbd_mode = -1;
+
+		/* Head back over to the original virtual terminal */
+		if ( saved_vt > 0 ) {
+			ioctl(keyboard_fd, VT_ACTIVATE, saved_vt);
+		}
+	}
+}
+
+void GS_CloseKeyboard(_THIS)
+{
+	if ( keyboard_fd >= 0 ) {
+		GS_LeaveGraphicsMode(this);
+		if ( keyboard_fd > 0 ) {
+			close(keyboard_fd);
+		}
+	}
+	keyboard_fd = -1;
+}
+
+int GS_OpenKeyboard(_THIS)
+{
+	/* Open only if not already opened */
+ 	if ( keyboard_fd < 0 ) {
+		char *tty0[] = { "/dev/tty0", "/dev/vc/0", NULL };
+		char *vcs[] = { "/dev/vc/%d", "/dev/tty%d", NULL };
+		int i, tty0_fd;
+
+		/* Try to query for a free virtual terminal */
+		tty0_fd = -1;
+		for ( i=0; tty0[i] && (tty0_fd < 0); ++i ) {
+			tty0_fd = open(tty0[i], O_WRONLY, 0);
+		}
+		if ( tty0_fd < 0 ) {
+			tty0_fd = dup(0); /* Maybe stdin is a VT? */
+		}
+		ioctl(tty0_fd, VT_OPENQRY, &current_vt);
+		close(tty0_fd);
+		if ( (geteuid() == 0) && (current_vt > 0) ) {
+			for ( i=0; vcs[i] && (keyboard_fd < 0); ++i ) {
+				char vtpath[12];
+
+				sprintf(vtpath, vcs[i], current_vt);
+				keyboard_fd = open(vtpath, O_RDWR, 0);
+#ifdef DEBUG_KEYBOARD
+				fprintf(stderr, "vtpath = %s, fd = %d\n",
+					vtpath, keyboard_fd);
+#endif /* DEBUG_KEYBOARD */
+
+				/* This needs to be our controlling tty
+				   so that the kernel ioctl() calls work
+				*/
+				if ( keyboard_fd >= 0 ) {
+					tty0_fd = open("/dev/tty", O_RDWR, 0);
+					if ( tty0_fd >= 0 ) {
+						ioctl(tty0_fd, TIOCNOTTY, 0);
+						close(tty0_fd);
+					}
+				}
+			}
+		}
+ 		if ( keyboard_fd < 0 ) {
+			/* Last resort, maybe our tty is a usable VT */
+			current_vt = 0;
+			keyboard_fd = open("/dev/tty", O_RDWR);
+ 		}
+#ifdef DEBUG_KEYBOARD
+		fprintf(stderr, "Current VT: %d\n", current_vt);
+#endif
+ 		saved_kbd_mode = -1;
+
+		/* Make sure that our input is a console terminal */
+		{ int dummy;
+		  if ( ioctl(keyboard_fd, KDGKBMODE, &dummy) < 0 ) {
+			close(keyboard_fd);
+			keyboard_fd = -1;
+			SDL_SetError("Unable to open a console terminal");
+		  }
+		}
+
+		/* Set up keymap */
+		GS_vgainitkeymaps(keyboard_fd);
+ 	}
+ 	return(keyboard_fd);
+}
+
+static enum {
+	MOUSE_NONE = -1,
+	MOUSE_GPM,	/* Note: GPM uses the MSC protocol */
+	MOUSE_PS2,
+	MOUSE_IMPS2,
+	MOUSE_MS,
+	MOUSE_BM,
+	NUM_MOUSE_DRVS
+} mouse_drv = MOUSE_NONE;
+
+void GS_CloseMouse(_THIS)
+{
+	if ( mouse_fd > 0 ) {
+		close(mouse_fd);
+	}
+	mouse_fd = -1;
+}
+
+/* Returns processes listed in /proc with the desired name */
+static int find_pid(DIR *proc, const char *wanted_name)
+{
+	struct dirent *entry;
+	int pid;
+
+	/* First scan proc for the gpm process */
+	pid = 0;
+	while ( (pid == 0) && ((entry=readdir(proc)) != NULL) ) {
+		if ( isdigit(entry->d_name[0]) ) {
+			FILE *status;
+			char path[PATH_MAX];
+			char name[PATH_MAX];
+
+			sprintf(path, "/proc/%s/status", entry->d_name);
+			status=fopen(path, "r");
+			if ( status ) {
+				name[0] = '\0';
+				fscanf(status, "Name: %s", name);
+				if ( strcmp(name, wanted_name) == 0 ) {
+					pid = atoi(entry->d_name);
+				}
+				fclose(status);
+			}
+		}
+	}
+	return pid;
+}
+
+/* Returns true if /dev/gpmdata is being written to by gpm */
+static int gpm_available(void)
+{
+	int available;
+	DIR *proc;
+	int pid;
+	int cmdline, len, arglen;
+	char path[PATH_MAX];
+	char args[PATH_MAX], *arg;
+
+	/* Don't bother looking if the fifo isn't there */
+	if ( access(GPM_NODE_FIFO, F_OK) < 0 ) {
+		return(0);
+	}
+
+	available = 0;
+	proc = opendir("/proc");
+	if ( proc ) {
+		while ( (pid=find_pid(proc, "gpm")) > 0 ) {
+			sprintf(path, "/proc/%d/cmdline", pid);
+			cmdline = open(path, O_RDONLY, 0);
+			if ( cmdline >= 0 ) {
+				len = read(cmdline, args, sizeof(args));
+				arg = args;
+				while ( len > 0 ) {
+					if ( strcmp(arg, "-R") == 0 ) {
+						available = 1;
+					}
+					arglen = strlen(arg)+1;
+					len -= arglen;
+					arg += arglen;
+				}
+				close(cmdline);
+			}
+		}
+		closedir(proc);
+	}
+	return available;
+}
+
+
+/* rcg06112001 Set up IMPS/2 mode, if possible. This gives
+ *  us access to the mousewheel, etc. Returns zero if
+ *  writes to device failed, but you still need to query the
+ *  device to see which mode it's actually in.
+ */
+static int set_imps2_mode(int fd)
+{
+	/* If you wanted to control the mouse mode (and we do :)  ) ...
+		Set IMPS/2 protocol:
+			{0xf3,200,0xf3,100,0xf3,80}
+		Reset mouse device:
+			{0xFF}
+	*/
+	Uint8 set_imps2[] = {0xf3, 200, 0xf3, 100, 0xf3, 80};
+	Uint8 reset = 0xff;
+	fd_set fdset;
+	struct timeval tv;
+	int retval = 0;
+
+	if ( write(fd, &set_imps2, sizeof(set_imps2)) == sizeof(set_imps2) ) {
+		if (write(fd, &reset, sizeof (reset)) == sizeof (reset) ) {
+			retval = 1;
+		}
+	}
+
+	/* Get rid of any chatter from the above */
+	FD_ZERO(&fdset);
+	FD_SET(fd, &fdset);
+	tv.tv_sec = 0;
+	tv.tv_usec = 0;
+	while ( select(fd+1, &fdset, 0, 0, &tv) > 0 ) {
+		char temp[32];
+		read(fd, temp, sizeof(temp));
+	}
+
+	return retval;
+}
+
+
+/* Returns true if the mouse uses the IMPS/2 protocol */
+static int detect_imps2(int fd)
+{
+	int imps2;
+
+	imps2 = 0;
+
+	if ( getenv("SDL_MOUSEDEV_IMPS2") ) {
+		imps2 = 1;
+	}
+	if ( ! imps2 ) {
+		Uint8 query_ps2 = 0xF2;
+		fd_set fdset;
+		struct timeval tv;
+
+		/* Get rid of any mouse motion noise */
+		FD_ZERO(&fdset);
+		FD_SET(fd, &fdset);
+		tv.tv_sec = 0;
+		tv.tv_usec = 0;
+		while ( select(fd+1, &fdset, 0, 0, &tv) > 0 ) {
+			char temp[32];
+			read(fd, temp, sizeof(temp));
+		}
+
+   		/* Query for the type of mouse protocol */
+   		if ( write(fd, &query_ps2, sizeof (query_ps2)) == sizeof (query_ps2)) {
+   			Uint8 ch = 0;
+
+			/* Get the mouse protocol response */
+			do {
+				FD_ZERO(&fdset);
+				FD_SET(fd, &fdset);
+				tv.tv_sec = 1;
+				tv.tv_usec = 0;
+				if ( select(fd+1, &fdset, 0, 0, &tv) < 1 ) {
+					break;
+				}
+			} while ( (read(fd, &ch, sizeof (ch)) == sizeof (ch)) &&
+			          ((ch == 0xFA) || (ch == 0xAA)) );
+
+			/* Experimental values (Logitech wheelmouse) */
+#ifdef DEBUG_MOUSE
+fprintf(stderr, "Last mouse mode: 0x%x\n", ch);
+#endif
+			if ( ch == 3 ) {
+				imps2 = 1;
+			}
+		}
+	}
+	return imps2;
+}
+
+int GS_OpenMouse(_THIS)
+{
+	int i;
+	const char *mousedev;
+	const char *mousedrv;
+
+	mousedrv = getenv("SDL_MOUSEDRV");
+	mousedev = getenv("SDL_MOUSEDEV");
+	mouse_fd = -1;
+
+	/* STD MICE */
+
+	if ( mousedev == NULL ) {
+		/* FIXME someday... allow multiple mice in this driver */
+		char *ps2mice[] = {
+		    "/dev/input/mice", "/dev/usbmouse", "/dev/psaux", NULL
+		};
+		/* First try to use GPM in repeater mode */
+		if ( mouse_fd < 0 ) {
+			if ( gpm_available() ) {
+				mouse_fd = open(GPM_NODE_FIFO, O_RDONLY, 0);
+				if ( mouse_fd >= 0 ) {
+#ifdef DEBUG_MOUSE
+fprintf(stderr, "Using GPM mouse\n");
+#endif
+					mouse_drv = MOUSE_GPM;
+				}
+			}
+		}
+		/* Now try to use a modern PS/2 mouse */
+		for ( i=0; (mouse_fd < 0) && ps2mice[i]; ++i ) {
+			mouse_fd = open(ps2mice[i], O_RDWR, 0);
+			if (mouse_fd < 0) {
+				mouse_fd = open(ps2mice[i], O_RDONLY, 0);
+			}
+			if (mouse_fd >= 0) {
+				/* rcg06112001 Attempt to set IMPS/2 mode */
+				if ( i == 0 ) {
+					set_imps2_mode(mouse_fd);
+				}
+				if (detect_imps2(mouse_fd)) {
+#ifdef DEBUG_MOUSE
+fprintf(stderr, "Using IMPS2 mouse\n");
+#endif
+					mouse_drv = MOUSE_IMPS2;
+				} else {
+					mouse_drv = MOUSE_PS2;
+#ifdef DEBUG_MOUSE
+fprintf(stderr, "Using PS2 mouse\n");
+#endif
+				}
+			}
+		}
+		/* Next try to use a PPC ADB port mouse */
+		if ( mouse_fd < 0 ) {
+			mouse_fd = open("/dev/adbmouse", O_RDONLY, 0);
+			if ( mouse_fd >= 0 ) {
+#ifdef DEBUG_MOUSE
+fprintf(stderr, "Using ADB mouse\n");
+#endif
+				mouse_drv = MOUSE_BM;
+			}
+		}
+	}
+	/* Default to a serial Microsoft mouse */
+	if ( mouse_fd < 0 ) {
+		if ( mousedev == NULL ) {
+			mousedev = "/dev/mouse";
+		}
+		mouse_fd = open(mousedev, O_RDONLY, 0);
+		if ( mouse_fd >= 0 ) {
+			struct termios mouse_termios;
+
+			/* Set the sampling speed to 1200 baud */
+			tcgetattr(mouse_fd, &mouse_termios);
+			mouse_termios.c_iflag = IGNBRK | IGNPAR;
+			mouse_termios.c_oflag = 0;
+			mouse_termios.c_lflag = 0;
+			mouse_termios.c_line = 0;
+			mouse_termios.c_cc[VTIME] = 0;
+			mouse_termios.c_cc[VMIN] = 1;
+			mouse_termios.c_cflag = CREAD | CLOCAL | HUPCL;
+			mouse_termios.c_cflag |= CS8;
+			mouse_termios.c_cflag |= B1200;
+			tcsetattr(mouse_fd, TCSAFLUSH, &mouse_termios);
+#ifdef DEBUG_MOUSE
+fprintf(stderr, "Using Microsoft mouse on %s\n", mousedev);
+#endif
+			mouse_drv = MOUSE_MS;
+		}
+	}
+	if ( mouse_fd < 0 ) {
+		mouse_drv = MOUSE_NONE;
+	}
+	return(mouse_fd);
+}
+
+static int posted = 0;
+
+void GS_vgamousecallback(int button, int dx, int dy)
+{
+	int button_1, button_3;
+	int button_state;
+	int state_changed;
+	int i;
+	Uint8 state;
+
+	if ( dx || dy ) {
+		posted += SDL_PrivateMouseMotion(0, 1, dx, dy);
+	}
+
+	/* Swap button 1 and 3 */
+	button_1 = (button & 0x04) >> 2;
+	button_3 = (button & 0x01) << 2;
+	button &= ~0x05;
+	button |= (button_1|button_3);
+
+	/* See what changed */
+	button_state = SDL_GetMouseState(NULL, NULL);
+	state_changed = button_state ^ button;
+	for ( i=0; i<8; ++i ) {
+		if ( state_changed & (1<<i) ) {
+			if ( button & (1<<i) ) {
+				state = SDL_PRESSED;
+			} else {
+				state = SDL_RELEASED;
+			}
+			posted += SDL_PrivateMouseButton(state, i+1, 0, 0);
+		}
+	}
+}
+
+/* For now, use GPM, PS/2, and MS protocols
+   Driver adapted from the SVGAlib mouse driver code (taken from gpm, etc.)
+ */
+static void handle_mouse(_THIS)
+{
+	static int start = 0;
+	static unsigned char mousebuf[BUFSIZ];
+	int i, nread;
+	int button = 0;
+	int dx = 0, dy = 0;
+	int packetsize = 0;
+
+	/* Figure out the mouse packet size */
+	switch (mouse_drv) {
+		case MOUSE_NONE:
+			/* Ack! */
+			read(mouse_fd, mousebuf, BUFSIZ);
+			return;
+		case MOUSE_GPM:
+			packetsize = 5;
+			break;
+		case MOUSE_IMPS2:
+			packetsize = 4;
+			break;
+		case MOUSE_PS2:
+		case MOUSE_MS:
+		case MOUSE_BM:
+			packetsize = 3;
+			break;
+		case NUM_MOUSE_DRVS:
+			/* Uh oh.. */
+			packetsize = 0;
+			break;
+	}
+
+	/* Read as many packets as possible */
+	nread = read(mouse_fd, &mousebuf[start], BUFSIZ-start);
+	if ( nread < 0 ) {
+		return;
+	}
+	nread += start;
+#ifdef DEBUG_MOUSE
+	fprintf(stderr, "Read %d bytes from mouse, start = %d\n", nread, start);
+#endif
+	for ( i=0; i<(nread-(packetsize-1)); i += packetsize ) {
+		switch (mouse_drv) {
+			case MOUSE_NONE:
+				break;
+			case MOUSE_GPM:
+				/* GPM protocol has 0x80 in high byte */
+				if ( (mousebuf[i] & 0xF8) != 0x80 ) {
+					/* Go to next byte */
+					i -= (packetsize-1);
+					continue;
+				}
+				/* Get current mouse state */
+				button = (~mousebuf[i]) & 0x07;
+				dx =   (signed char)(mousebuf[i+1]) +
+				       (signed char)(mousebuf[i+3]);
+				dy = -((signed char)(mousebuf[i+2]) +
+				       (signed char)(mousebuf[i+4]));
+				break;
+			case MOUSE_PS2:
+				/* PS/2 protocol has nothing in high byte */
+				if ( (mousebuf[i] & 0xC0) != 0 ) {
+					/* Go to next byte */
+					i -= (packetsize-1);
+					continue;
+				}
+				/* Get current mouse state */
+				button = (mousebuf[i] & 0x04) >> 1 | /*Middle*/
+		  			 (mousebuf[i] & 0x02) >> 1 | /*Right*/
+		  			 (mousebuf[i] & 0x01) << 2;  /*Left*/
+		  		dx = (mousebuf[i] & 0x10) ?
+		  		      mousebuf[i+1] - 256 : mousebuf[i+1];
+		  		dy = (mousebuf[i] & 0x20) ?
+		  		      -(mousebuf[i+2] - 256) : -mousebuf[i+2];
+				break;
+			case MOUSE_IMPS2:
+				/* Get current mouse state */
+				button = (mousebuf[i] & 0x04) >> 1 | /*Middle*/
+		  			 (mousebuf[i] & 0x02) >> 1 | /*Right*/
+		  			 (mousebuf[i] & 0x01) << 2 | /*Left*/
+		  			 (mousebuf[i] & 0x40) >> 3 | /* 4 */
+		  			 (mousebuf[i] & 0x80) >> 3;  /* 5 */
+		  		dx = (mousebuf[i] & 0x10) ?
+		  		      mousebuf[i+1] - 256 : mousebuf[i+1];
+		  		dy = (mousebuf[i] & 0x20) ?
+		  		      -(mousebuf[i+2] - 256) : -mousebuf[i+2];
+				switch (mousebuf[i+3]&0x0F) {
+				    case 0x0E: /* DX = +1 */
+				    case 0x02: /* DX = -1 */
+					break;
+				    case 0x0F: /* DY = +1 (map button 4) */
+					button |= (1<<3);
+					break;
+				    case 0x01: /* DY = -1 (map button 5) */
+					button |= (1<<4);
+					break;
+				}
+				break;
+			case MOUSE_MS:
+				/* Microsoft protocol has 0x40 in high byte */
+				if ( (mousebuf[i] & 0x40) != 0x40 ) {
+					/* Go to next byte */
+					i -= (packetsize-1);
+					continue;
+				}
+				/* Get current mouse state */
+				button = ((mousebuf[i] & 0x20) >> 3) |
+				         ((mousebuf[i] & 0x10) >> 4);
+				dx = (signed char)(((mousebuf[i] & 0x03) << 6) |
+				                   (mousebuf[i + 1] & 0x3F));
+				dy = (signed char)(((mousebuf[i] & 0x0C) << 4) |
+				                    (mousebuf[i + 2] & 0x3F));
+				break;
+			case MOUSE_BM:
+				/* BusMouse protocol has 0xF8 in high byte */
+				if ( (mousebuf[i] & 0xF8) != 0x80 ) {
+					/* Go to next byte */
+					i -= (packetsize-1);
+					continue;
+				}
+				/* Get current mouse state */
+				button = (~mousebuf[i]) & 0x07;
+				dx =  (signed char)mousebuf[i+1];
+				dy = -(signed char)mousebuf[i+2];
+				break;
+			case NUM_MOUSE_DRVS:
+				/* Uh oh.. */
+				dx = 0;
+				dy = 0;
+				break;
+		}
+		GS_vgamousecallback(button, dx, dy);
+	}
+	if ( i < nread ) {
+		memcpy(mousebuf, &mousebuf[i], (nread-i));
+		start = (nread-i);
+	} else {
+		start = 0;
+	}
+	return;
+}
+
+static void handle_keyboard(_THIS)
+{
+	unsigned char keybuf[BUFSIZ];
+	int i, nread;
+	int pressed;
+	int scancode;
+	SDL_keysym keysym;
+
+	nread = read(keyboard_fd, keybuf, BUFSIZ);
+	for ( i=0; i<nread; ++i ) {
+		scancode = keybuf[i] & 0x7F;
+		if ( keybuf[i] & 0x80 ) {
+			pressed = SDL_RELEASED;
+		} else {
+			pressed = SDL_PRESSED;
+		}
+		TranslateKey(scancode, &keysym);
+		posted += SDL_PrivateKeyboard(pressed, &keysym);
+	}
+}
+
+void GS_PumpEvents(_THIS)
+{
+	fd_set fdset;
+	int max_fd;
+	static struct timeval zero;
+
+	do {
+		posted = 0;
+
+		FD_ZERO(&fdset);
+		max_fd = 0;
+		if ( keyboard_fd >= 0 ) {
+			FD_SET(keyboard_fd, &fdset);
+			if ( max_fd < keyboard_fd ) {
+				max_fd = keyboard_fd;
+			}
+		}
+		if ( mouse_fd >= 0 ) {
+			FD_SET(mouse_fd, &fdset);
+			if ( max_fd < mouse_fd ) {
+				max_fd = mouse_fd;
+			}
+		}
+		if ( select(max_fd+1, &fdset, NULL, NULL, &zero) > 0 ) {
+			if ( keyboard_fd >= 0 ) {
+				if ( FD_ISSET(keyboard_fd, &fdset) ) {
+					handle_keyboard(this);
+				}
+			}
+			if ( mouse_fd >= 0 ) {
+				if ( FD_ISSET(mouse_fd, &fdset) ) {
+					handle_mouse(this);
+				}
+			}
+		}
+	} while ( posted );
+}
+
+void GS_InitOSKeymap(_THIS)
+{
+	int i;
+
+	/* Initialize the Linux key translation table */
+
+	/* First get the ascii keys and others not well handled */
+	for (i=0; i<SDL_TABLESIZE(keymap); ++i) {
+	  switch(i) {
+	  /* These aren't handled by the x86 kernel keymapping (?) */
+	  case SCANCODE_PRINTSCREEN:
+	    keymap[i] = SDLK_PRINT;
+	    break;
+	  case SCANCODE_BREAK:
+	    keymap[i] = SDLK_BREAK;
+	    break;
+	  case SCANCODE_BREAK_ALTERNATIVE:
+	    keymap[i] = SDLK_PAUSE;
+	    break;
+	  case SCANCODE_LEFTSHIFT:
+	    keymap[i] = SDLK_LSHIFT;
+	    break;
+	  case SCANCODE_RIGHTSHIFT:
+	    keymap[i] = SDLK_RSHIFT;
+	    break;
+	  case SCANCODE_LEFTCONTROL:
+	    keymap[i] = SDLK_LCTRL;
+	    break;
+	  case SCANCODE_RIGHTCONTROL:
+	    keymap[i] = SDLK_RCTRL;
+	    break;
+	  case SCANCODE_RIGHTWIN:
+	    keymap[i] = SDLK_RSUPER;
+	    break;
+	  case SCANCODE_LEFTWIN:
+	    keymap[i] = SDLK_LSUPER;
+	    break;
+	  case 127:
+	    keymap[i] = SDLK_MENU;
+	    break;
+	  /* this should take care of all standard ascii keys */
+	  default:
+	    keymap[i] = KVAL(vga_keymap[0][i]);
+	    break;
+          }
+	}
+	for (i=0; i<SDL_TABLESIZE(keymap); ++i) {
+	  switch(keymap_temp[i]) {
+	    case K_F1:  keymap[i] = SDLK_F1;  break;
+	    case K_F2:  keymap[i] = SDLK_F2;  break;
+	    case K_F3:  keymap[i] = SDLK_F3;  break;
+	    case K_F4:  keymap[i] = SDLK_F4;  break;
+	    case K_F5:  keymap[i] = SDLK_F5;  break;
+	    case K_F6:  keymap[i] = SDLK_F6;  break;
+	    case K_F7:  keymap[i] = SDLK_F7;  break;
+	    case K_F8:  keymap[i] = SDLK_F8;  break;
+	    case K_F9:  keymap[i] = SDLK_F9;  break;
+	    case K_F10: keymap[i] = SDLK_F10; break;
+	    case K_F11: keymap[i] = SDLK_F11; break;
+	    case K_F12: keymap[i] = SDLK_F12; break;
+
+	    case K_DOWN:  keymap[i] = SDLK_DOWN;  break;
+	    case K_LEFT:  keymap[i] = SDLK_LEFT;  break;
+	    case K_RIGHT: keymap[i] = SDLK_RIGHT; break;
+	    case K_UP:    keymap[i] = SDLK_UP;    break;
+
+	    case K_P0:     keymap[i] = SDLK_KP0; break;
+	    case K_P1:     keymap[i] = SDLK_KP1; break;
+	    case K_P2:     keymap[i] = SDLK_KP2; break;
+	    case K_P3:     keymap[i] = SDLK_KP3; break;
+	    case K_P4:     keymap[i] = SDLK_KP4; break;
+	    case K_P5:     keymap[i] = SDLK_KP5; break;
+	    case K_P6:     keymap[i] = SDLK_KP6; break;
+	    case K_P7:     keymap[i] = SDLK_KP7; break;
+	    case K_P8:     keymap[i] = SDLK_KP8; break;
+	    case K_P9:     keymap[i] = SDLK_KP9; break;
+	    case K_PPLUS:  keymap[i] = SDLK_KP_PLUS; break;
+	    case K_PMINUS: keymap[i] = SDLK_KP_MINUS; break;
+	    case K_PSTAR:  keymap[i] = SDLK_KP_MULTIPLY; break;
+	    case K_PSLASH: keymap[i] = SDLK_KP_DIVIDE; break;
+	    case K_PENTER: keymap[i] = SDLK_KP_ENTER; break;
+	    case K_PDOT:   keymap[i] = SDLK_KP_PERIOD; break;
+
+	    case K_SHIFT:  if ( keymap[i] != SDLK_RSHIFT )
+	                     keymap[i] = SDLK_LSHIFT;
+	                   break;
+	    case K_SHIFTL: keymap[i] = SDLK_LSHIFT; break;
+	    case K_SHIFTR: keymap[i] = SDLK_RSHIFT; break;
+	    case K_CTRL:  if ( keymap[i] != SDLK_RCTRL )
+	                     keymap[i] = SDLK_LCTRL;
+	                   break;
+	    case K_CTRLL:  keymap[i] = SDLK_LCTRL;  break;
+	    case K_CTRLR:  keymap[i] = SDLK_RCTRL;  break;
+	    case K_ALT:    keymap[i] = SDLK_LALT;   break;
+	    case K_ALTGR:  keymap[i] = SDLK_RALT;   break;
+
+	    case K_INSERT: keymap[i] = SDLK_INSERT;   break;
+	    case K_REMOVE: keymap[i] = SDLK_DELETE;   break;
+	    case K_PGUP:   keymap[i] = SDLK_PAGEUP;   break;
+	    case K_PGDN:   keymap[i] = SDLK_PAGEDOWN; break;
+	    case K_FIND:   keymap[i] = SDLK_HOME;     break;
+	    case K_SELECT: keymap[i] = SDLK_END;      break;
+
+	    case K_NUM:  keymap[i] = SDLK_NUMLOCK;   break;
+	    case K_CAPS: keymap[i] = SDLK_CAPSLOCK;  break;
+
+	    case K_F13:   keymap[i] = SDLK_PRINT;     break;
+	    case K_HOLD:  keymap[i] = SDLK_SCROLLOCK; break;
+	    case K_PAUSE: keymap[i] = SDLK_PAUSE;     break;
+
+	    case 127: keymap[i] = SDLK_BACKSPACE; break;
+	     
+	    default: break;
+	  }
+	}
+}
+
+static SDL_keysym *TranslateKey(int scancode, SDL_keysym *keysym)
+{
+	/* Set the keysym information */
+	keysym->scancode = scancode;
+	keysym->sym = keymap[scancode];
+	keysym->mod = KMOD_NONE;
+
+	/* If UNICODE is on, get the UNICODE value for the key */
+	keysym->unicode = 0;
+	if ( SDL_TranslateUNICODE ) {
+		int map;
+		SDLMod modstate;
+
+		modstate = SDL_GetModState();
+		map = 0;
+		if ( modstate & KMOD_SHIFT ) {
+			map |= (1<<KG_SHIFT);
+		}
+		if ( modstate & KMOD_CTRL ) {
+			map |= (1<<KG_CTRL);
+		}
+		if ( modstate & KMOD_ALT ) {
+			map |= (1<<KG_ALT);
+		}
+		if ( modstate & KMOD_MODE ) {
+			map |= (1<<KG_ALTGR);
+		}
+		if ( KTYP(vga_keymap[map][scancode]) == KT_LETTER ) {
+			if ( modstate & KMOD_CAPS ) {
+				map ^= (1<<KG_SHIFT);
+			}
+		}
+		if ( KTYP(vga_keymap[map][scancode]) == KT_PAD ) {
+			if ( modstate & KMOD_NUM ) {
+				keysym->unicode=KVAL(vga_keymap[map][scancode]);
+			}
+		} else {
+			keysym->unicode = KVAL(vga_keymap[map][scancode]);
+		}
+	}
+	return(keysym);
+}