4 * Joystick handling code
6 * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
7 * Written by Steve Baker, <sjbaker1@airmail.net>
8 * Copied for Platform code by Evan Felix <karcaw at gmail.com>
9 * Creation date: Thur Feb 2 2012
11 * Permission is hereby granted, free of charge, to any person obtaining a
12 * copy of this software and associated documentation files (the "Software"),
13 * to deal in the Software without restriction, including without limitation
14 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15 * and/or sell copies of the Software, and to permit persons to whom the
16 * Software is furnished to do so, subject to the following conditions:
18 * The above copyright notice and this permission notice shall be included
19 * in all copies or substantial portions of the Software.
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
22 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
24 * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
25 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
26 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30 * FreeBSD port by Stephen Montgomery-Smith <stephen@math.missouri.edu>
32 * Redone by John Fay 2/4/04 with another look from the PLIB "js" library.
33 * Many thanks for Steve Baker for permission to pull from that library.
36 #include <GL/freeglut.h>
37 #include "../fg_internal.h"
38 #ifdef HAVE_SYS_PARAM_H
39 # include <sys/param.h>
43 /*this should be defined in a header file */
44 #define MAX_NUM_JOYSTICKS 2
45 extern SFG_Joystick *fgJoystick [ MAX_NUM_JOYSTICKS ];
47 void fgPlatformJoystickRawRead( SFG_Joystick* joy, int* buttons, float* axes )
51 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
54 if ( joy->pJoystick.os->is_analog )
56 int status = read ( joy->pJoystick.os->fd, &joy->pJoystick.os->ajs, sizeof(joy->pJoystick.os->ajs) );
57 if ( status != sizeof(joy->pJoystick.os->ajs) ) {
58 perror ( joy->pJoystick.os->fname );
62 if ( buttons != NULL )
63 *buttons = ( joy->pJoystick.os->ajs.b1 ? 1 : 0 ) | ( joy->pJoystick.os->ajs.b2 ? 2 : 0 );
67 axes[0] = (float) joy->pJoystick.os->ajs.x;
68 axes[1] = (float) joy->pJoystick.os->ajs.y;
75 while ( ( len = read ( joy->pJoystick.os->fd, joy->pJoystick.os->hid_data_buf, joy->pJoystick.os->hid_dlen ) ) == joy->pJoystick.os->hid_dlen )
79 for ( h = joy->pJoystick.os->hids; h; h = h->next )
81 int d = hid_get_data ( joy->pJoystick.os->hid_data_buf, h );
83 int page = HID_PAGE ( h->usage );
84 int usage = HID_USAGE ( h->usage );
86 if ( page == HUP_GENERIC_DESKTOP )
89 for ( i = 0; i < joy->num_axes; i++ )
90 if (joy->pJoystick.os->axes_usage[i] == usage)
92 if (usage == HUG_HAT_SWITCH)
96 joy->pJoystick.os->cache_axes[i] = (float)hatmap_x[d];
97 joy->pJoystick.os->cache_axes[i + 1] = (float)hatmap_y[d];
101 joy->pJoystick.os->cache_axes[i] = (float)d;
106 else if (page == HUP_BUTTON)
108 if (usage > 0 && usage < _JS_MAX_BUTTONS + 1)
111 joy->pJoystick.os->cache_buttons |= (1 << ( usage - 1 ));
113 joy->pJoystick.os->cache_buttons &= ~(1 << ( usage - 1 ));
118 if ( len < 0 && errno != EAGAIN )
120 perror( joy->pJoystick.os->fname );
123 if ( buttons != NULL ) *buttons = joy->pJoystick.os->cache_buttons;
125 memcpy ( axes, joy->pJoystick.os->cache_axes, sizeof(float) * joy->num_axes );
133 status = read ( joy->pJoystick.fd, &joy->pJoystick.js, sizeof(struct js_event) );
135 if ( status != sizeof( struct js_event ) )
137 if ( errno == EAGAIN )
139 /* Use the old values */
141 *buttons = joy->pJoystick.tmp_buttons;
143 memcpy( axes, joy->pJoystick.tmp_axes,
144 sizeof( float ) * joy->num_axes );
148 fgWarning ( "%s", joy->pJoystick.fname );
149 joy->error = GL_TRUE;
153 switch ( joy->pJoystick.js.type & ~JS_EVENT_INIT )
155 case JS_EVENT_BUTTON:
156 if( joy->pJoystick.js.value == 0 ) /* clear the flag */
157 joy->pJoystick.tmp_buttons &= ~( 1 << joy->pJoystick.js.number );
159 joy->pJoystick.tmp_buttons |= ( 1 << joy->pJoystick.js.number );
163 if ( joy->pJoystick.js.number < joy->num_axes )
165 joy->pJoystick.tmp_axes[ joy->pJoystick.js.number ] = ( float )joy->pJoystick.js.value;
168 memcpy( axes, joy->pJoystick.tmp_axes, sizeof(float) * joy->num_axes );
173 fgWarning ( "PLIB_JS: Unrecognised /dev/js return!?!" );
175 /* use the old values */
177 if ( buttons != NULL ) *buttons = joy->pJoystick.tmp_buttons;
179 memcpy ( axes, joy->pJoystick.tmp_axes, sizeof(float) * joy->num_axes );
185 *buttons = joy->pJoystick.tmp_buttons;
189 status = read( joy->pJoystick.fd, &joy->pJoystick.js, JS_RETURN );
191 if ( status != JS_RETURN )
193 fgWarning( "%s", joy->pJoystick.fname );
194 joy->error = GL_TRUE;
199 # if defined( __FreeBSD__ ) || defined(__FreeBSD_kernel__) || defined( __NetBSD__ )
200 *buttons = ( joy->pJoystick.js.b1 ? 1 : 0 ) | ( joy->pJoystick.js.b2 ? 2 : 0 ); /* XXX Should not be here -- BSD is handled earlier */
202 *buttons = joy->pJoystick.js.buttons;
207 axes[ 0 ] = (float) joy->pJoystick.js.x;
208 axes[ 1 ] = (float) joy->pJoystick.js.y;
214 void fgPlatformJoystickOpen( SFG_Joystick* joy )
216 #if defined( __FreeBSD__ ) || defined(__FreeBSD_kernel__) || defined( __NetBSD__ )
224 # if defined( __linux__ ) || TARGET_HOST_SOLARIS
230 #if defined( __FreeBSD__ ) || defined(__FreeBSD_kernel__) || defined( __NetBSD__ )
231 for( i = 0; i < _JS_MAX_AXES; i++ )
232 joy->pJoystick.os->cache_axes[ i ] = 0.0f;
234 joy->pJoystick.os->cache_buttons = 0;
236 joy->pJoystick.os->fd = open( joy->pJoystick.os->fname, O_RDONLY | O_NONBLOCK);
238 if( joy->pJoystick.os->fd < 0 && errno == EACCES )
239 fgWarning ( "%s exists but is not readable by you", joy->pJoystick.os->fname );
241 joy->error =( joy->pJoystick.os->fd < 0 );
247 joy->num_buttons = 0;
248 if( joy->pJoystick.os->is_analog )
251 char joyfname[ 1024 ];
252 int noargs, in_no_axes;
254 float axes [ _JS_MAX_AXES ];
255 int buttons[ _JS_MAX_AXES ];
258 joy->num_buttons = 32;
260 fghJoystickRawRead( joy, buttons, axes );
261 joy->error = axes[ 0 ] < -1000000000.0f;
265 snprintf( joyfname, sizeof(joyfname), "%s/.joy%drc", getenv( "HOME" ), joy->id );
267 joyfile = fopen( joyfname, "r" );
268 joy->error =( joyfile == NULL );
272 noargs = fscanf( joyfile, "%d%f%f%f%f%f%f", &in_no_axes,
273 &joy->min[ 0 ], &joy->center[ 0 ], &joy->max[ 0 ],
274 &joy->min[ 1 ], &joy->center[ 1 ], &joy->max[ 1 ] );
275 joy->error = noargs != 7 || in_no_axes != _JS_MAX_AXES;
280 for( i = 0; i < _JS_MAX_AXES; i++ )
282 joy->dead_band[ i ] = 0.0f;
283 joy->saturate [ i ] = 1.0f;
286 return; /* End of analog code */
290 if( ! fghJoystickInitializeHID( joy->pJoystick.os, &joy->num_axes,
291 &joy->num_buttons ) )
293 close( joy->pJoystick.os->fd );
294 joy->error = GL_TRUE;
298 cp = strrchr( joy->pJoystick.os->fname, '/' );
301 if( fghJoystickFindUSBdev( &cp[1], joy->name, sizeof( joy->name ) ) ==
303 strcpy( joy->name, &cp[1] );
306 if( joy->num_axes > _JS_MAX_AXES )
307 joy->num_axes = _JS_MAX_AXES;
309 for( i = 0; i < _JS_MAX_AXES; i++ )
311 /* We really should get this from the HID, but that data seems
312 * to be quite unreliable for analog-to-USB converters. Punt for
315 if( joy->pJoystick.os->axes_usage[ i ] == HUG_HAT_SWITCH )
317 joy->max [ i ] = 1.0f;
318 joy->center[ i ] = 0.0f;
319 joy->min [ i ] = -1.0f;
323 joy->max [ i ] = 255.0f;
324 joy->center[ i ] = 127.0f;
325 joy->min [ i ] = 0.0f;
328 joy->dead_band[ i ] = 0.0f;
329 joy->saturate[ i ] = 1.0f;
334 #if defined( __linux__ ) || TARGET_HOST_SOLARIS
335 /* Default for older Linux systems. */
337 joy->num_buttons = 32;
340 for( i = 0; i < _JS_MAX_AXES; i++ )
341 joy->pJoystick.tmp_axes[ i ] = 0.0f;
343 joy->pJoystick.tmp_buttons = 0;
346 joy->pJoystick.fd = open( joy->pJoystick.fname, O_RDONLY );
348 joy->error =( joy->pJoystick.fd < 0 );
353 /* Set the correct number of axes for the linux driver */
355 /* Melchior Franz's fixes for big-endian Linuxes since writing
356 * to the upper byte of an uninitialized word doesn't work.
359 ioctl( joy->pJoystick.fd, JSIOCGAXES, &u );
361 ioctl( joy->pJoystick.fd, JSIOCGBUTTONS, &u );
362 joy->num_buttons = u;
363 ioctl( joy->pJoystick.fd, JSIOCGNAME( sizeof( joy->name ) ), joy->name );
364 fcntl( joy->pJoystick.fd, F_SETFL, O_NONBLOCK );
368 * The Linux driver seems to return 512 for all axes
369 * when no stick is present - but there is a chance
370 * that could happen by accident - so it's gotta happen
371 * on both axes for at least 100 attempts.
373 * PWO: shouldn't be that done somehow wiser on the kernel level?
380 fghJoystickRawRead( joy, NULL, joy->center );
382 } while( !joy->error &&
384 joy->center[ 0 ] == 512.0f &&
385 joy->center[ 1 ] == 512.0f );
387 if ( counter >= 100 )
388 joy->error = GL_TRUE;
391 for( i = 0; i < _JS_MAX_AXES; i++ )
394 joy->max [ i ] = 32767.0f;
395 joy->center[ i ] = 0.0f;
396 joy->min [ i ] = -32767.0f;
398 joy->max[ i ] = joy->center[ i ] * 2.0f;
399 joy->min[ i ] = 0.0f;
401 joy->dead_band[ i ] = 0.0f;
402 joy->saturate [ i ] = 1.0f;
408 void fgPlatformJoystickInit( SFG_Joystick *fgJoystick[], int ident )
410 #if defined( __FreeBSD__ ) || defined(__FreeBSD_kernel__) || defined( __NetBSD__ )
411 fgJoystick[ ident ]->id = ident;
412 fgJoystick[ ident ]->error = GL_FALSE;
414 fgJoystick[ ident ]->pJoystick.os = calloc( 1, sizeof( struct os_specific_s ) );
415 memset( fgJoystick[ ident ]->pJoystick.os, 0, sizeof( struct os_specific_s ) );
416 if( ident < USB_IDENT_OFFSET )
417 fgJoystick[ ident ]->pJoystick.os->is_analog = 1;
418 if( fgJoystick[ ident ]->pJoystick.os->is_analog )
419 snprintf( fgJoystick[ ident ]->pJoystick.os->fname, sizeof(fgJoystick[ ident ]->pJoystick.os->fname), "%s%d", AJSDEV, ident );
421 snprintf( fgJoystick[ ident ]->pJoystick.os->fname, sizeof(fgJoystick[ ident ]->pJoystick.os->fname), "%s%d", UHIDDEV,
422 ident - USB_IDENT_OFFSET );
423 #elif defined( __linux__ )
424 fgJoystick[ ident ]->id = ident;
425 fgJoystick[ ident ]->error = GL_FALSE;
427 snprintf( fgJoystick[ident]->pJoystick.fname, sizeof(fgJoystick[ident]->pJoystick.fname), "/dev/input/js%d", ident );
429 if( access( fgJoystick[ ident ]->pJoystick.fname, F_OK ) != 0 )
430 snprintf( fgJoystick[ ident ]->pJoystick.fname, sizeof(fgJoystick[ ident ]->pJoystick.fname), "/dev/js%d", ident );
435 void fgPlatformJoystickClose ( int ident )
437 #if defined( __FreeBSD__ ) || defined(__FreeBSD_kernel__) || defined( __NetBSD__ )
438 if( fgJoystick[ident]->pJoystick.os )
440 if( ! fgJoystick[ ident ]->error )
441 close( fgJoystick[ ident ]->pJoystick.os->fd );
443 if( fgJoystick[ ident ]->pJoystick.os->hids )
444 free (fgJoystick[ ident ]->pJoystick.os->hids);
445 if( fgJoystick[ ident ]->pJoystick.os->hid_data_buf )
446 free( fgJoystick[ ident ]->pJoystick.os->hid_data_buf );
448 free( fgJoystick[ident]->pJoystick.os );
452 if( ! fgJoystick[ident]->error )
453 close( fgJoystick[ ident ]->pJoystick.fd );