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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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*/
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#include "SDL_config.h"
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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"
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#include "../SDL_sysvideo.h"
#include "../../events/SDL_sysevents.h"
#include "../../events/SDL_events_c.h"
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#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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#if SDL_INPUT_TSLIB
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if (ts_dev != NULL) {
ts_close(ts_dev);
ts_dev = NULL;
mouse_fd = -1;
}
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#endif /* SDL_INPUT_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) ) {
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/* Don't reset it, that'll clear IMPS/2 mode on some mice
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if (write(fd, &reset, sizeof (reset)) == sizeof (reset) ) {
retval = 1;
}
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}
/* 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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#if SDL_INPUT_TSLIB
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if ( mousedrv && (SDL_strcmp(mousedrv, "TSLIB") == 0) ) {
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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;
}
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#endif /* SDL_INPUT_TSLIB */
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/* ELO TOUCHSCREEN SUPPORT */
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if ( mousedrv && (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 *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 */
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set_imps2_mode(mouse_fd);
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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);
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if ( mousedrv && (SDL_strcmp(mousedrv, "PS2") == 0) ) {
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#ifdef DEBUG_MOUSE
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fprintf(stderr, "Using (user specified) PS2 mouse on %s\n", mousedev);
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#endif
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mouse_drv = MOUSE_PS2;
} else {
#ifdef DEBUG_MOUSE
fprintf(stderr, "Using (default) MS mouse on %s\n", mousedev);
#endif
mouse_drv = MOUSE_MS;
}
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}
}
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 */
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#if SDL_INPUT_TSLIB
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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;
}
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#endif /* SDL_INPUT_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:
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#if SDL_INPUT_TSLIB
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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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808
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;
839
default:
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844
845
846
847
/* Uh oh.. */
dx = 0;
dy = 0;
break;
}
FB_vgamousecallback(button, relative, dx, dy);
}
if ( i < nread ) {
848
SDL_memcpy(mousebuf, &mousebuf[i], (nread-i));
849
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start = (nread-i);
} else {
start = 0;
}
return;
}
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860
/* 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.
*/
861
862
static void switch_vt(_THIS, unsigned short which)
{
863
struct fb_var_screeninfo vinfo;
864
struct vt_stat vtstate;
865
unsigned short v_active;
866
__u16 saved_pal[3*256];
867
SDL_Surface *screen;
868
Uint32 screen_arealen;
869
Uint8 *screen_contents = NULL;
870
871
872
873
874
875
/* 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;
}
876
v_active = vtstate.v_active;
877
878
879
/* Save the contents of the screen, and go to text mode */
SDL_mutexP(hw_lock);
880
wait_idle(this);
881
screen = SDL_VideoSurface;
882
883
884
885
886
887
if ( !SDL_ShadowSurface ) {
screen_arealen = (screen->h*screen->pitch);
screen_contents = (Uint8 *)SDL_malloc(screen_arealen);
if ( screen_contents ) {
SDL_memcpy(screen_contents, (Uint8 *)screen->pixels + screen->offset, screen_arealen);
}
888
889
}
FB_SavePaletteTo(this, 256, saved_pal);
890
ioctl(console_fd, FBIOGET_VSCREENINFO, &vinfo);
891
892
893
894
895
896
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);
897
while ( ioctl(keyboard_fd, VT_WAITACTIVE, v_active) < 0 ) {
898
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900
901
902
903
904
905
906
907
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);
908
ioctl(console_fd, FBIOPUT_VSCREENINFO, &vinfo);
909
910
FB_RestorePaletteFrom(this, 256, saved_pal);
if ( screen_contents ) {
911
SDL_memcpy((Uint8 *)screen->pixels + screen->offset, screen_contents, screen_arealen);
912
SDL_free(screen_contents);
913
914
} else {
SDL_UpdateRect(screen, 0, 0, 0, 0);
915
916
917
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919
920
921
922
923
924
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926
927
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929
930
931
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933
934
935
}
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);
936
/* Handle Ctrl-Alt-FN for vt switch */
937
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939
940
941
942
943
944
945
946
947
948
949
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:
950
951
if ( (SDL_GetModState() & KMOD_CTRL) &&
(SDL_GetModState() & KMOD_ALT) ) {
952
953
954
if ( pressed ) {
switch_vt(this, (keysym.sym-SDLK_F1)+1);
}
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
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 );