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SDL_fbevents.c
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/*
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SDL - Simple DirectMedia Layer
Copyright (C) 1997-2006 Sam Lantinga
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This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
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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
Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
slouken@libsdl.org
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*/
/* Handle the event stream, converting console events into SDL events */
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#include <stdio.h>
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#include <sys/types.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <fcntl.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>
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#include "SDL_timer.h"
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#include "SDL_mutex.h"
#include "SDL_sysevents.h"
#include "SDL_sysvideo.h"
#include "SDL_events_c.h"
#include "SDL_fbvideo.h"
#include "SDL_fbevents_c.h"
#include "SDL_fbkeys.h"
#include "SDL_fbelo.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 FB_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 ) {
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SDL_memset(vga_keymap[map], 0, NR_KEYS*sizeof(Uint16));
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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 FB_InGraphicsMode(_THIS)
{
return((keyboard_fd >= 0) && (saved_kbd_mode >= 0));
}
int FB_EnterGraphicsMode(_THIS)
{
struct termios keyboard_termios;
/* Set medium-raw keyboard mode */
if ( (keyboard_fd >= 0) && !FB_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) {
FB_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 ) {
FB_CloseKeyboard(this);
SDL_SetError("Unable to set keyboard in raw mode");
return(-1);
}
if ( ioctl(keyboard_fd, KDSETMODE, KD_GRAPHICS) < 0 ) {
FB_CloseKeyboard(this);
SDL_SetError("Unable to set keyboard in graphics mode");
return(-1);
}
}
return(keyboard_fd);
}
void FB_LeaveGraphicsMode(_THIS)
{
if ( FB_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 FB_CloseKeyboard(_THIS)
{
if ( keyboard_fd >= 0 ) {
FB_LeaveGraphicsMode(this);
if ( keyboard_fd > 0 ) {
close(keyboard_fd);
}
}
keyboard_fd = -1;
}
int FB_OpenKeyboard(_THIS)
{
/* Open only if not already opened */
if ( keyboard_fd < 0 ) {
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static const char * const tty0[] = { "/dev/tty0", "/dev/vc/0", NULL };
static const char * const vcs[] = { "/dev/vc/%d", "/dev/tty%d", NULL };
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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, ¤t_vt);
close(tty0_fd);
if ( (geteuid() == 0) && (current_vt > 0) ) {
for ( i=0; vcs[i] && (keyboard_fd < 0); ++i ) {
char vtpath[12];
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SDL_snprintf(vtpath, SDL_arraysize(vtpath), vcs[i], current_vt);
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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 */
FB_vgainitkeymaps(keyboard_fd);
}
return(keyboard_fd);
}
static enum {
MOUSE_NONE = -1,
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MOUSE_MSC, /* Note: GPM uses the MSC protocol */
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MOUSE_PS2,
MOUSE_IMPS2,
MOUSE_MS,
MOUSE_BM,
MOUSE_ELO,
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MOUSE_TSLIB,
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NUM_MOUSE_DRVS
} mouse_drv = MOUSE_NONE;
void FB_CloseMouse(_THIS)
{
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#ifdef HAVE_TSLIB
if (ts_dev != NULL) {
ts_close(ts_dev);
ts_dev = NULL;
mouse_fd = -1;
}
#endif /* HAVE_TSLIB */
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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];
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SDL_snprintf(path, SDL_arraysize(path), "/proc/%s/status", entry->d_name);
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status=fopen(path, "r");
if ( status ) {
name[0] = '\0';
fscanf(status, "Name: %s", name);
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if ( SDL_strcmp(name, wanted_name) == 0 ) {
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pid = SDL_atoi(entry->d_name);
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}
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 ) {
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SDL_snprintf(path, SDL_arraysize(path), "/proc/%d/cmdline", pid);
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cmdline = open(path, O_RDONLY, 0);
if ( cmdline >= 0 ) {
len = read(cmdline, args, sizeof(args));
arg = args;
while ( len > 0 ) {
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if ( SDL_strcmp(arg, "-R") == 0 ) {
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available = 1;
}
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arglen = SDL_strlen(arg)+1;
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len -= arglen;
arg += arglen;
}
close(cmdline);
}
}
closedir(proc);
}
return available;
}
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/* 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;
}
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/* Returns true if the mouse uses the IMPS/2 protocol */
static int detect_imps2(int fd)
{
int imps2;
imps2 = 0;
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if ( SDL_getenv("SDL_MOUSEDEV_IMPS2") ) {
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imps2 = 1;
}
if ( ! imps2 ) {
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Uint8 query_ps2 = 0xF2;
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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));
}
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/* Query for the type of mouse protocol */
if ( write(fd, &query_ps2, sizeof (query_ps2)) == sizeof (query_ps2)) {
Uint8 ch = 0;
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/* 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;
}
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} while ( (read(fd, &ch, sizeof (ch)) == sizeof (ch)) &&
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((ch == 0xFA) || (ch == 0xAA)) );
/* Experimental values (Logitech wheelmouse) */
#ifdef DEBUG_MOUSE
fprintf(stderr, "Last mouse mode: 0x%x\n", ch);
#endif
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if ( (ch == 3) || (ch == 4) ) {
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imps2 = 1;
}
}
}
return imps2;
}
int FB_OpenMouse(_THIS)
{
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int i;
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const char *mousedev;
const char *mousedrv;
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mousedrv = SDL_getenv("SDL_MOUSEDRV");
mousedev = SDL_getenv("SDL_MOUSEDEV");
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mouse_fd = -1;
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#ifdef HAVE_TSLIB
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if ((mousedrv != NULL) && (SDL_strcmp(mousedrv, "TSLIB") == 0)) {
if (mousedev == NULL) mousedev = SDL_getenv("TSLIB_TSDEVICE");
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if (mousedev != NULL) {
ts_dev = ts_open(mousedev, 1);
if ((ts_dev != NULL) && (ts_config(ts_dev) >= 0)) {
#ifdef DEBUG_MOUSE
fprintf(stderr, "Using tslib touchscreen\n");
#endif
mouse_drv = MOUSE_TSLIB;
mouse_fd = ts_fd(ts_dev);
return mouse_fd;
}
}
mouse_drv = MOUSE_NONE;
return mouse_fd;
}
#endif /* HAVE_TSLIB */
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/* ELO TOUCHSCREEN SUPPORT */
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if( (mousedrv != NULL) && (SDL_strcmp(mousedrv, "ELO") == 0) ) {
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mouse_fd = open(mousedev, O_RDWR);
if ( mouse_fd >= 0 ) {
if(eloInitController(mouse_fd)) {
#ifdef DEBUG_MOUSE
fprintf(stderr, "Using ELO touchscreen\n");
#endif
mouse_drv = MOUSE_ELO;
}
}
else if ( mouse_fd < 0 ) {
mouse_drv = MOUSE_NONE;
}
return(mouse_fd);
}
/* STD MICE */
if ( mousedev == NULL ) {
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/* FIXME someday... allow multiple mice in this driver */
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static const char * const ps2mice[] = {
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"/dev/input/mice", "/dev/usbmouse", "/dev/psaux", NULL
};
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/* 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
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mouse_drv = MOUSE_MSC;
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}
}
}
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/* 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);
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if (mouse_fd < 0) {
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mouse_fd = open(ps2mice[i], O_RDONLY, 0);
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}
if (mouse_fd >= 0) {
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/* rcg06112001 Attempt to set IMPS/2 mode */
if ( i == 0 ) {
set_imps2_mode(mouse_fd);
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}
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if (detect_imps2(mouse_fd)) {
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#ifdef DEBUG_MOUSE
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fprintf(stderr, "Using IMPS2 mouse\n");
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#endif
mouse_drv = MOUSE_IMPS2;
} else {
#ifdef DEBUG_MOUSE
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fprintf(stderr, "Using PS2 mouse\n");
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#endif
mouse_drv = MOUSE_PS2;
}
}
}
/* 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 FB_vgamousecallback(int button, int relative, 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, relative, 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);
}
}
}
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/* Handle input from tslib */
#ifdef HAVE_TSLIB
static void handle_tslib(_THIS)
{
struct ts_sample sample;
int button;
while (ts_read(ts_dev, &sample, 1) > 0) {
button = (sample.pressure > 0) ? 1 : 0;
button <<= 2; /* must report it as button 3 */
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FB_vgamousecallback(button, 0, sample.x, sample.y);
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}
return;
}
#endif /* HAVE_TSLIB */
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/* For now, use MSC, PS/2, and MS protocols
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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];
static int relative = 1;
int i, nread;
int button = 0;
int dx = 0, dy = 0;
int packetsize = 0;
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int realx, realy;
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/* Figure out the mouse packet size */
switch (mouse_drv) {
case MOUSE_NONE:
/* Ack! */
read(mouse_fd, mousebuf, BUFSIZ);
return;
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case MOUSE_MSC:
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packetsize = 5;
break;
case MOUSE_IMPS2:
packetsize = 4;
break;
case MOUSE_PS2:
case MOUSE_MS:
case MOUSE_BM:
packetsize = 3;
break;
case MOUSE_ELO:
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/* try to read the next packet */
if(eloReadPosition(this, mouse_fd, &dx, &dy, &button, &realx, &realy)) {
button = (button & 0x01) << 2;
FB_vgamousecallback(button, 0, dx, dy);
}
return; /* nothing left to do */
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case MOUSE_TSLIB:
#ifdef HAVE_TSLIB
handle_tslib(this);
#endif
return; /* nothing left to do */
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default:
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/* Uh oh.. */
packetsize = 0;
break;
}
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/* Special handling for the quite sensitive ELO controller */
if (mouse_drv == MOUSE_ELO) {
}
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/* 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;
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case MOUSE_MSC:
/* MSC protocol has 0x80 in high byte */
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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) */
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FB_vgamousecallback(button | (1<<3),
1, 0, 0);
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break;
case 0x01: /* DY = -1 (map button 5) */
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FB_vgamousecallback(button | (1<<4),
1, 0, 0);
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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;
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default:
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/* Uh oh.. */
dx = 0;
dy = 0;
break;
}
FB_vgamousecallback(button, relative, dx, dy);
}
if ( i < nread ) {
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SDL_memcpy(mousebuf, &mousebuf[i], (nread-i));
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start = (nread-i);
} else {
start = 0;
}
return;
}
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/* Handle switching to another VC, returns when our VC is back.
This isn't necessarily the best solution. For SDL 1.3 we need
a way of notifying the application when we lose access to the
video hardware and when we regain it.
*/
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static void switch_vt(_THIS, unsigned short which)
{
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struct fb_var_screeninfo vinfo;
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struct vt_stat vtstate;
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unsigned short v_active;
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SDL_Surface *screen;
__u16 saved_pal[3*256];
Uint32 screen_arealen;
Uint8 *screen_contents;
/* Figure out whether or not we're switching to a new console */
if ( (ioctl(keyboard_fd, VT_GETSTATE, &vtstate) < 0) ||
(which == vtstate.v_active) ) {
return;
}
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v_active = vtstate.v_active;
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/* Save the contents of the screen, and go to text mode */
SDL_mutexP(hw_lock);
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wait_idle(this);
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screen = SDL_VideoSurface;
screen_arealen = (screen->h*screen->pitch);
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screen_contents = (Uint8 *)SDL_malloc(screen_arealen);
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if ( screen_contents ) {
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SDL_memcpy(screen_contents, screen->pixels, screen_arealen);
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}
FB_SavePaletteTo(this, 256, saved_pal);
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ioctl(console_fd, FBIOGET_VSCREENINFO, &vinfo);
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ioctl(keyboard_fd, KDSETMODE, KD_TEXT);
/* New console, switch to it */
if ( ioctl(keyboard_fd, VT_ACTIVATE, which) == 0 ) {
/* Wait for our console to be activated again */
ioctl(keyboard_fd, VT_WAITACTIVE, which);
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while ( ioctl(keyboard_fd, VT_WAITACTIVE, v_active) < 0 ) {
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if ( (errno != EINTR) && (errno != EAGAIN) ) {
/* Unknown VT error - cancel this */
break;
}
SDL_Delay(500);
}
}
/* Restore graphics mode and the contents of the screen */
ioctl(keyboard_fd, KDSETMODE, KD_GRAPHICS);
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ioctl(console_fd, FBIOPUT_VSCREENINFO, &vinfo);
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FB_RestorePaletteFrom(this, 256, saved_pal);
if ( screen_contents ) {
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SDL_memcpy(screen->pixels, screen_contents, screen_arealen);
SDL_free(screen_contents);
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}
SDL_mutexV(hw_lock);
}
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);
/* Handle Alt-FN for vt switch */
switch (keysym.sym) {
case SDLK_F1:
case SDLK_F2:
case SDLK_F3:
case SDLK_F4:
case SDLK_F5:
case SDLK_F6:
case SDLK_F7:
case SDLK_F8:
case SDLK_F9:
case SDLK_F10:
case SDLK_F11:
case SDLK_F12:
if ( SDL_GetModState() & KMOD_ALT ) {
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if ( pressed ) {
switch_vt(this, (keysym.sym-SDLK_F1)+1);
}
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break;
}
/* Fall through to normal processing */
default:
posted += SDL_PrivateKeyboard(pressed, &keysym);
break;
}
}
}
void FB_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 FB_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: