Mercurial > sdl-ios-xcode
annotate src/joystick/os2/SDL_sysjoystick.c @ 1312:c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
I batch edited these files, so please let me know if I've accidentally removed anybody's
credit here.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 01 Feb 2006 06:32:25 +0000 |
| parents | 173c063d4f55 |
| children | 3692456e7b0f |
| rev | line source |
|---|---|
| 1190 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1190
diff
changeset
|
3 Copyright (C) 1997-2006 Sam Lantinga |
| 1190 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1190
diff
changeset
|
6 modify it under the terms of the GNU Lesser General Public |
| 1190 | 7 License as published by the Free Software Foundation; either |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1190
diff
changeset
|
8 version 2.1 of the License, or (at your option) any later version. |
| 1190 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1190
diff
changeset
|
13 Lesser General Public License for more details. |
| 1190 | 14 |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1190
diff
changeset
|
15 You should have received a copy of the GNU Lesser General Public |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1190
diff
changeset
|
16 License along with this library; if not, write to the Free Software |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
1190
diff
changeset
|
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 1190 | 18 |
| 19 Sam Lantinga | |
| 20 slouken@libsdl.org | |
| 21 */ | |
| 22 | |
| 23 /* OS/2 Joystick driver, contributed by Daniel Caetano */ | |
| 24 | |
| 25 #include <stdlib.h> | |
| 26 #include <stdio.h> | |
| 27 #include <mem.h> | |
| 28 | |
| 29 #define INCL_DOSDEVICES | |
| 30 #define INCL_DOSDEVIOCTL | |
| 31 #define INCL_DOSMEMMGR | |
| 32 #include <os2.h> | |
| 33 #include "joyos2.h" | |
| 34 | |
| 35 #include "SDL_error.h" | |
| 36 #include "SDL_joystick.h" | |
| 37 #include "SDL_sysjoystick.h" | |
| 38 #include "SDL_joystick_c.h" | |
| 39 | |
| 40 HFILE hJoyPort = NULL; /* Joystick GAME$ Port Address */ | |
| 41 #define MAX_JOYSTICKS 2 /* Maximum of two joysticks */ | |
| 42 #define MAX_AXES 4 /* each joystick can have up to 4 axes */ | |
| 43 #define MAX_BUTTONS 8 /* 8 buttons */ | |
| 44 #define MAX_HATS 0 /* 0 hats - OS/2 doesn't support it */ | |
| 45 #define MAX_BALLS 0 /* and 0 balls - OS/2 doesn't support it */ | |
| 46 #define AXIS_MIN -32768 /* minimum value for axes coordinate */ | |
| 47 #define AXIS_MAX 32767 /* maximum value for axes coordinate */ | |
| 48 #define MAX_JOYNAME 128 /* Joystick name may have 128 characters */ | |
| 49 /* limit axes to 256 possible positions to filter out noise */ | |
| 50 #define JOY_AXIS_THRESHOLD (((AXIS_MAX)-(AXIS_MIN))/256) | |
| 51 /* Calc Button Flag for buttons A to D */ | |
| 52 #define JOY_BUTTON_FLAG(n) (1<<n) | |
| 53 | |
| 54 /* Joystick data... hold information about detected devices */ | |
| 55 struct _SYS_JoyData | |
| 56 { | |
| 57 Sint8 id; // Device ID | |
| 58 char szDeviceName[MAX_JOYNAME]; // Device Name | |
| 59 char axes; // Number of axes | |
| 60 char buttons; // Number of buttons | |
| 61 char hats; // Number of buttons | |
| 62 char balls; // Number of buttons | |
| 63 int axes_min[MAX_AXES]; // minimum callibration value for axes | |
| 64 int axes_med[MAX_AXES]; // medium callibration value for axes | |
| 65 int axes_max[MAX_AXES]; // maximum callibration value for axes | |
| 66 int buttoncalc[4]; // Used for buttons 5, 6, 7 and 8. | |
| 67 } SYS_JoyData[MAX_JOYSTICKS]; | |
| 68 | |
| 69 | |
| 70 /* Structure used to convert data from OS/2 driver format to SDL format */ | |
| 71 struct joystick_hwdata | |
| 72 { | |
| 73 Sint8 id; | |
| 74 struct _transaxes | |
| 75 { | |
| 76 int offset; /* Center Offset */ | |
| 77 float scale1; /* Center to left/up Scale */ | |
| 78 float scale2; /* Center to right/down Scale */ | |
| 79 } transaxes[MAX_AXES]; | |
| 80 }; | |
| 81 | |
| 82 /* Structure used to get values from Joystick Environment Variable */ | |
| 83 struct _joycfg | |
| 84 { | |
| 85 char name[MAX_JOYNAME]; | |
| 86 unsigned int axes; | |
| 87 unsigned int buttons; | |
| 88 unsigned int hats; | |
| 89 unsigned int balls; | |
| 90 }; | |
| 91 | |
| 92 /* OS/2 Implementation Function Prototypes */ | |
| 93 APIRET joyPortOpen(HFILE * hGame); | |
| 94 void joyPortClose(HFILE * hGame); | |
| 95 int joyGetData(char *joyenv, char *name, char stopchar, size_t maxchars); | |
| 96 int joyGetEnv(struct _joycfg * joydata); | |
| 97 | |
| 98 | |
| 99 | |
| 100 /************************************************************************/ | |
| 101 /* Function to scan the system for joysticks. */ | |
| 102 /* This function should set SDL_numjoysticks to the number of available */ | |
| 103 /* joysticks. Joystick 0 should be the system default joystick. */ | |
| 104 /* It should return 0, or -1 on an unrecoverable fatal error. */ | |
| 105 /************************************************************************/ | |
| 106 int SDL_SYS_JoystickInit(void) | |
| 107 { | |
| 108 APIRET rc; /* Generic OS/2 return code */ | |
| 109 GAME_PORT_STRUCT stJoyStatus; /* Joystick Status Structure */ | |
| 110 GAME_PARM_STRUCT stGameParms; /* Joystick Parameter Structure */ | |
| 111 GAME_CALIB_STRUCT stGameCalib; /* Calibration Struct */ | |
| 112 ULONG ulDataLen; /* Size of data */ | |
| 113 ULONG ulLastTick; /* Tick Counter for timing operations */ | |
| 114 Uint8 maxdevs; /* Maximum number of devices */ | |
| 115 Uint8 numdevs; /* Number of present devices */ | |
| 116 Uint8 maxbut; /* Maximum number of buttons... */ | |
| 117 Uint8 i; /* Temporary Count Vars */ | |
| 118 Uint8 ucNewJoystickMask; /* Mask for Joystick Detection */ | |
| 119 struct _joycfg joycfg; /* Joy Configuration from envvar */ | |
| 120 | |
| 121 | |
| 122 /* Get Max Number of Devices */ | |
| 123 rc = joyPortOpen(&hJoyPort); /* Open GAME$ port */ | |
| 124 if (rc != 0) return 0; /* Cannot open... report no joystick */ | |
| 125 ulDataLen = sizeof(stGameParms); | |
| 126 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_GET_PARMS, | |
| 127 NULL, 0, NULL, &stGameParms, ulDataLen, &ulDataLen); /* Ask device info */ | |
| 128 if (rc != 0) | |
| 129 { | |
| 130 joyPortClose(&hJoyPort); | |
| 131 SDL_SetError("Could not read joystick port."); | |
| 132 return -1; | |
| 133 } | |
| 134 if (stGameParms.useA != 0) maxdevs++; | |
| 135 if (stGameParms.useB != 0) maxdevs++; | |
| 136 if ( maxdevs > MAX_JOYSTICKS ) maxdevs = MAX_JOYSTICKS; | |
| 137 | |
| 138 /* Defines min/max axes values (callibration) */ | |
| 139 ulDataLen = sizeof(stGameCalib); | |
| 140 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_GET_CALIB, | |
| 141 NULL, 0, NULL, &stGameCalib, ulDataLen, &ulDataLen); | |
| 142 if (rc != 0) | |
| 143 { | |
| 144 joyPortClose(&hJoyPort); | |
| 145 SDL_SetError("Could not read callibration data."); | |
| 146 return -1; | |
| 147 } | |
| 148 | |
| 149 /* Determine how many joysticks are active */ | |
| 150 numdevs = 0; /* Points no device */ | |
| 151 ucNewJoystickMask = 0x0F; /* read all 4 joystick axis */ | |
| 152 ulDataLen = sizeof(ucNewJoystickMask); | |
| 153 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_PORT_RESET, | |
| 154 &ucNewJoystickMask, ulDataLen, &ulDataLen, NULL, 0, NULL); | |
| 155 if (rc == 0) | |
| 156 { | |
| 157 ulDataLen = sizeof(stJoyStatus); | |
| 158 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_PORT_GET, | |
| 159 NULL, 0, NULL, &stJoyStatus, ulDataLen, &ulDataLen); | |
| 160 if (rc != 0) | |
| 161 { | |
| 162 joyPortClose(&hJoyPort); | |
| 163 SDL_SetError("Could not call joystick port."); | |
| 164 return -1; | |
| 165 } | |
| 166 ulLastTick = stJoyStatus.ulJs_Ticks; | |
| 167 while (stJoyStatus.ulJs_Ticks == ulLastTick) | |
| 168 { | |
| 169 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_PORT_GET, | |
| 170 NULL, 0, NULL, &stJoyStatus, ulDataLen, &ulDataLen); | |
| 171 } | |
| 172 if ((stJoyStatus.ucJs_JoyStickMask & 0x03) > 0) numdevs++; | |
| 173 if (((stJoyStatus.ucJs_JoyStickMask >> 2) & 0x03) > 0) numdevs++; | |
| 174 } | |
| 175 | |
| 176 if (numdevs>maxdevs) numdevs=maxdevs; | |
| 177 | |
| 178 /* If *any* joystick was detected... Let's configure SDL for them */ | |
| 179 if (numdevs > 0) | |
| 180 { | |
| 181 /* Verify if it is a "user defined" joystick */ | |
| 182 if (joyGetEnv(&joycfg)) | |
| 183 { | |
| 184 GAME_3POS_STRUCT * axis[4]; | |
| 185 axis[0] = &stGameCalib.Ax; | |
| 186 axis[1] = &stGameCalib.Ay; | |
| 187 axis[2] = &stGameCalib.Bx; | |
| 188 axis[3] = &stGameCalib.By; | |
| 189 /* Say it has one device only (user defined is always one device only) */ | |
| 190 numdevs = 1; | |
| 191 /* Define Device 0 as... */ | |
| 192 SYS_JoyData[0].id=0; | |
| 193 /* Define Number of Axes... up to 4 */ | |
| 194 if (joycfg.axes>MAX_AXES) joycfg.axes = MAX_AXES; | |
| 195 SYS_JoyData[0].axes = joycfg.axes; | |
| 196 /* Define number of buttons... 8 if 2 axes, 6 if 3 axes and 4 if 4 axes */ | |
| 197 maxbut = MAX_BUTTONS; | |
| 198 if (joycfg.axes>2) maxbut-=((joycfg.axes-2)<<1); /* MAX_BUTTONS - 2*(axes-2) */ | |
| 199 if (joycfg.buttons > maxbut) joycfg.buttons = maxbut; | |
| 200 SYS_JoyData[0].buttons = joycfg.buttons; | |
| 201 /* Define number of hats */ | |
| 202 if (joycfg.hats > MAX_HATS) joycfg.hats = MAX_HATS; | |
| 203 SYS_JoyData[0].hats = joycfg.hats; | |
| 204 /* Define number of balls */ | |
| 205 if (joycfg.balls > MAX_BALLS) joycfg.balls = MAX_BALLS; | |
| 206 SYS_JoyData[0].balls = joycfg.balls; | |
| 207 /* Initialize Axes Callibration Values */ | |
| 208 for (i=0; i<joycfg.axes; i++) | |
| 209 { | |
| 210 SYS_JoyData[0].axes_min[i] = axis[i]->lower; | |
| 211 SYS_JoyData[0].axes_med[i] = axis[i]->centre; | |
| 212 SYS_JoyData[0].axes_max[i] = axis[i]->upper; | |
| 213 } | |
| 214 /* Initialize Buttons 5 to 8 structures */ | |
| 215 if (joycfg.buttons>=5) SYS_JoyData[0].buttoncalc[0]=((axis[2]->lower+axis[3]->centre)>>1); | |
| 216 if (joycfg.buttons>=6) SYS_JoyData[0].buttoncalc[1]=((axis[3]->lower+axis[3]->centre)>>1); | |
| 217 if (joycfg.buttons>=7) SYS_JoyData[0].buttoncalc[2]=((axis[2]->upper+axis[3]->centre)>>1); | |
| 218 if (joycfg.buttons>=8) SYS_JoyData[0].buttoncalc[3]=((axis[3]->upper+axis[3]->centre)>>1); | |
| 219 /* Intialize Joystick Name */ | |
| 220 strcpy (SYS_JoyData[0].szDeviceName,joycfg.name); | |
| 221 } | |
| 222 /* Default Init ... autoconfig */ | |
| 223 else | |
| 224 { | |
| 225 /* if two devices were detected... configure as Joy1 4 axis and Joy2 2 axis */ | |
| 226 if (numdevs==2) | |
| 227 { | |
| 228 /* Define Device 0 as 4 axes, 4 buttons */ | |
| 229 SYS_JoyData[0].id=0; | |
| 230 SYS_JoyData[0].axes = 4; | |
| 231 SYS_JoyData[0].buttons = 4; | |
| 232 SYS_JoyData[0].hats = 0; | |
| 233 SYS_JoyData[0].balls = 0; | |
| 234 SYS_JoyData[0].axes_min[0] = stGameCalib.Ax.lower; | |
| 235 SYS_JoyData[0].axes_med[0] = stGameCalib.Ax.centre; | |
| 236 SYS_JoyData[0].axes_max[0] = stGameCalib.Ax.upper; | |
| 237 SYS_JoyData[0].axes_min[1] = stGameCalib.Ay.lower; | |
| 238 SYS_JoyData[0].axes_med[1] = stGameCalib.Ay.centre; | |
| 239 SYS_JoyData[0].axes_max[1] = stGameCalib.Ay.upper; | |
| 240 SYS_JoyData[0].axes_min[2] = stGameCalib.Bx.lower; | |
| 241 SYS_JoyData[0].axes_med[2] = stGameCalib.Bx.centre; | |
| 242 SYS_JoyData[0].axes_max[2] = stGameCalib.Bx.upper; | |
| 243 SYS_JoyData[0].axes_min[3] = stGameCalib.By.lower; | |
| 244 SYS_JoyData[0].axes_med[3] = stGameCalib.By.centre; | |
| 245 SYS_JoyData[0].axes_max[3] = stGameCalib.By.upper; | |
| 246 /* Define Device 1 as 2 axes, 2 buttons */ | |
| 247 SYS_JoyData[1].id=1; | |
| 248 SYS_JoyData[1].axes = 2; | |
| 249 SYS_JoyData[1].buttons = 2; | |
| 250 SYS_JoyData[1].hats = 0; | |
| 251 SYS_JoyData[1].balls = 0; | |
| 252 SYS_JoyData[1].axes_min[0] = stGameCalib.Bx.lower; | |
| 253 SYS_JoyData[1].axes_med[0] = stGameCalib.Bx.centre; | |
| 254 SYS_JoyData[1].axes_max[0] = stGameCalib.Bx.upper; | |
| 255 SYS_JoyData[1].axes_min[1] = stGameCalib.By.lower; | |
| 256 SYS_JoyData[1].axes_med[1] = stGameCalib.By.centre; | |
| 257 SYS_JoyData[1].axes_max[1] = stGameCalib.By.upper; | |
| 258 } | |
| 259 /* One joystick only? */ | |
| 260 else | |
| 261 { | |
| 262 /* If it is joystick A... */ | |
| 263 if ((stJoyStatus.ucJs_JoyStickMask & 0x03) > 0) | |
| 264 { | |
| 265 /* Define Device 0 as 2 axes, 4 buttons */ | |
| 266 SYS_JoyData[0].id=0; | |
| 267 SYS_JoyData[0].axes = 2; | |
| 268 SYS_JoyData[0].buttons = 4; | |
| 269 SYS_JoyData[0].hats = 0; | |
| 270 SYS_JoyData[0].balls = 0; | |
| 271 SYS_JoyData[0].axes_min[0] = stGameCalib.Ax.lower; | |
| 272 SYS_JoyData[0].axes_med[0] = stGameCalib.Ax.centre; | |
| 273 SYS_JoyData[0].axes_max[0] = stGameCalib.Ax.upper; | |
| 274 SYS_JoyData[0].axes_min[1] = stGameCalib.Ay.lower; | |
| 275 SYS_JoyData[0].axes_med[1] = stGameCalib.Ay.centre; | |
| 276 SYS_JoyData[0].axes_max[1] = stGameCalib.Ay.upper; | |
| 277 } | |
| 278 /* If not, it is joystick B */ | |
| 279 else | |
| 280 { | |
| 281 /* Define Device 1 as 2 axes, 2 buttons */ | |
| 282 SYS_JoyData[0].id=1; | |
| 283 SYS_JoyData[0].axes = 2; | |
| 284 SYS_JoyData[0].buttons = 2; | |
| 285 SYS_JoyData[0].hats = 0; | |
| 286 SYS_JoyData[0].balls = 0; | |
| 287 SYS_JoyData[0].axes_min[0] = stGameCalib.Bx.lower; | |
| 288 SYS_JoyData[0].axes_med[0] = stGameCalib.Bx.centre; | |
| 289 SYS_JoyData[0].axes_max[0] = stGameCalib.Bx.upper; | |
| 290 SYS_JoyData[0].axes_min[1] = stGameCalib.By.lower; | |
| 291 SYS_JoyData[0].axes_med[1] = stGameCalib.By.centre; | |
| 292 SYS_JoyData[0].axes_max[1] = stGameCalib.By.upper; | |
| 293 } | |
| 294 } | |
| 295 /* Hack to define Joystick Port Names */ | |
| 296 if ( numdevs > maxdevs ) numdevs = maxdevs; | |
| 297 for (i=0; i<numdevs; i++) sprintf (SYS_JoyData[i].szDeviceName,"Default Joystick %c",'A'+SYS_JoyData[i].id); | |
| 298 } | |
| 299 } | |
| 300 /* Return the number of devices found */ | |
| 301 return(numdevs); | |
| 302 } | |
| 303 | |
| 304 | |
| 305 | |
| 306 /***********************************************************/ | |
| 307 /* Function to get the device-dependent name of a joystick */ | |
| 308 /***********************************************************/ | |
| 309 const char *SDL_SYS_JoystickName(int index) | |
| 310 { | |
| 311 /* No need to verify if device exists, already done in upper layer */ | |
| 312 return(SYS_JoyData[index].szDeviceName); | |
| 313 } | |
| 314 | |
| 315 | |
| 316 | |
| 317 /******************************************************************************/ | |
| 318 /* Function to open a joystick for use. */ | |
| 319 /* The joystick to open is specified by the index field of the joystick. */ | |
| 320 /* This should fill the nbuttons and naxes fields of the joystick structure. */ | |
| 321 /* It returns 0, or -1 if there is an error. */ | |
| 322 /******************************************************************************/ | |
| 323 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick) | |
| 324 { | |
| 325 int index; /* Index shortcut for index in joystick structure */ | |
| 326 int i; /* Generic Counter */ | |
| 327 | |
| 328 /* allocate memory for system specific hardware data */ | |
| 329 joystick->hwdata = (struct joystick_hwdata *) malloc(sizeof(*joystick->hwdata)); | |
| 330 if (joystick->hwdata == NULL) | |
| 331 { | |
| 332 SDL_OutOfMemory(); | |
| 333 return(-1); | |
| 334 } | |
| 335 /* Reset Hardware Data */ | |
| 336 memset(joystick->hwdata, 0, sizeof(*joystick->hwdata)); | |
| 337 | |
| 338 /* ShortCut Pointer */ | |
| 339 index = joystick->index; | |
| 340 /* Define offsets and scales for all axes */ | |
| 341 joystick->hwdata->id = SYS_JoyData[index].id; | |
| 342 for ( i = 0; i < MAX_AXES; ++i ) | |
| 343 { | |
| 344 if ( (i<2) || i < SYS_JoyData[index].axes ) | |
| 345 { | |
| 346 joystick->hwdata->transaxes[i].offset = ((AXIS_MAX + AXIS_MIN)>>1) - SYS_JoyData[index].axes_med[i]; | |
| 347 //joystick->hwdata->transaxes[i].scale = (float)((AXIS_MAX - AXIS_MIN)/(SYS_JoyData[index].axes_max[i]-SYS_JoyData[index].axes_min[i])); | |
| 348 joystick->hwdata->transaxes[i].scale1 = (float)abs((AXIS_MIN/SYS_JoyData[index].axes_min[i])); | |
| 349 joystick->hwdata->transaxes[i].scale2 = (float)abs((AXIS_MAX/SYS_JoyData[index].axes_max[i])); | |
| 350 } | |
| 351 else | |
| 352 { | |
| 353 joystick->hwdata->transaxes[i].offset = 0; | |
| 354 //joystick->hwdata->transaxes[i].scale = 1.0; /* Just in case */ | |
| 355 joystick->hwdata->transaxes[i].scale1 = 1.0; /* Just in case */ | |
| 356 joystick->hwdata->transaxes[i].scale2 = 1.0; /* Just in case */ | |
| 357 } | |
| 358 } | |
| 359 | |
| 360 /* fill nbuttons, naxes, and nhats fields */ | |
| 361 joystick->nbuttons = SYS_JoyData[index].buttons; | |
| 362 joystick->naxes = SYS_JoyData[index].axes; | |
| 363 /* joystick->nhats = SYS_JoyData[index].hats; */ | |
| 364 joystick->nhats = 0; /* No support for hats at this time */ | |
| 365 /* joystick->nballs = SYS_JoyData[index].balls; */ | |
| 366 joystick->nballs = 0; /* No support for balls at this time */ | |
| 367 return 0; | |
| 368 } | |
| 369 | |
| 370 | |
| 371 | |
| 372 /***************************************************************************/ | |
| 373 /* Function to update the state of a joystick - called as a device poll. */ | |
| 374 /* This function shouldn't update the joystick structure directly, */ | |
| 375 /* but instead should call SDL_PrivateJoystick*() to deliver events */ | |
| 376 /* and update joystick device state. */ | |
| 377 /***************************************************************************/ | |
| 378 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick) | |
| 379 { | |
| 380 APIRET rc; /* Generic OS/2 return code */ | |
| 381 int index; /* index shortcurt to joystick index */ | |
| 382 int i; /* Generic counter */ | |
| 383 int normbut; /* Number of buttons reported by joystick */ | |
| 384 int corr; /* Correction for button names */ | |
| 385 Sint16 value, change; /* Values used to update axis values */ | |
| 386 struct _transaxes *transaxes; /* Shortcut for Correction structure */ | |
| 387 Uint32 pos[MAX_AXES]; /* Vector to inform the Axis status */ | |
| 388 ULONG ulDataLen; /* Size of data */ | |
| 389 GAME_STATUS_STRUCT stGameStatus; /* Joystick Status Structure */ | |
| 390 | |
| 391 ulDataLen = sizeof(stGameStatus); | |
| 392 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_GET_STATUS, | |
| 393 NULL, 0, NULL, &stGameStatus, ulDataLen, &ulDataLen); | |
| 394 if (rc != 0) | |
| 395 { | |
| 396 SDL_SetError("Could not read joystick status."); | |
| 397 return; /* Could not read data */ | |
| 398 } | |
| 399 | |
| 400 /* Shortcut pointer */ | |
| 401 index = joystick->index; | |
| 402 /* joystick motion events */ | |
| 403 | |
| 404 if (SYS_JoyData[index].id == 0) | |
| 405 { | |
| 406 pos[0] = stGameStatus.curdata.A.x; | |
| 407 pos[1] = stGameStatus.curdata.A.y; | |
| 408 if (SYS_JoyData[index].axes >= 3) pos[2] = stGameStatus.curdata.B.x; | |
| 409 else pos[2]=0; | |
| 410 if (SYS_JoyData[index].axes >= 4) pos[3] = stGameStatus.curdata.B.y; | |
| 411 else pos[3]=0; | |
| 412 pos[4]=0; /* OS/2 basic drivers do not support more than 4 axes joysticks */ | |
| 413 pos[5]=0; | |
| 414 } | |
| 415 else if (SYS_JoyData[index].id == 1) | |
| 416 { | |
| 417 pos[0] = stGameStatus.curdata.B.x; | |
| 418 pos[1] = stGameStatus.curdata.B.y; | |
| 419 pos[2]=0; | |
| 420 pos[3]=0; | |
| 421 pos[4]=0; | |
| 422 pos[5]=0; | |
| 423 } | |
| 424 | |
| 425 /* Corrects the movements using the callibration */ | |
| 426 transaxes = joystick->hwdata->transaxes; | |
| 427 for (i = 0; i < joystick->naxes; i++) | |
| 428 { | |
| 429 value = pos[i] + transaxes[i].offset; | |
| 430 if (value<0) | |
| 431 { | |
| 432 value*=transaxes[i].scale1; | |
| 433 if (value>0) value = AXIS_MIN; | |
| 434 } | |
| 435 else | |
| 436 { | |
| 437 value*=transaxes[i].scale2; | |
| 438 if (value<0) value = AXIS_MAX; | |
| 439 } | |
| 440 change = (value - joystick->axes[i]); | |
| 441 if ( (change < -JOY_AXIS_THRESHOLD) || (change > JOY_AXIS_THRESHOLD) ) | |
| 442 { | |
| 443 SDL_PrivateJoystickAxis(joystick, (Uint8)i, (Sint16)value); | |
| 444 } | |
| 445 } | |
| 446 | |
| 447 /* joystick button A to D events */ | |
| 448 if (SYS_JoyData[index].id == 1) corr = 2; | |
| 449 else corr = 0; | |
| 450 normbut=4; /* Number of normal buttons */ | |
| 451 if (joystick->nbuttons<normbut) normbut = joystick->nbuttons; | |
| 452 for ( i = corr; (i-corr) < normbut; ++i ) | |
| 453 { | |
| 454 /* | |
| 455 Button A: 1110 0000 | |
| 456 Button B: 1101 0000 | |
| 457 Button C: 1011 0000 | |
| 458 Button D: 0111 0000 | |
| 459 */ | |
| 460 if ( (~stGameStatus.curdata.butMask)>>4 & JOY_BUTTON_FLAG(i) ) | |
| 461 { | |
| 462 if ( ! joystick->buttons[i-corr] ) | |
| 463 { | |
| 464 SDL_PrivateJoystickButton(joystick, (Uint8)(i-corr), SDL_PRESSED); | |
| 465 } | |
| 466 } | |
| 467 else | |
| 468 { | |
| 469 if ( joystick->buttons[i-corr] ) | |
| 470 { | |
| 471 SDL_PrivateJoystickButton(joystick, (Uint8)(i-corr), SDL_RELEASED); | |
| 472 } | |
| 473 } | |
| 474 } | |
| 475 | |
| 476 /* Joystick button E to H buttons */ | |
| 477 /* | |
| 478 Button E: Axis 2 X Left | |
| 479 Button F: Axis 2 Y Up | |
| 480 Button G: Axis 2 X Right | |
| 481 Button H: Axis 2 Y Down | |
| 482 */ | |
| 483 if (joystick->nbuttons>=5) | |
| 484 { | |
| 485 if (stGameStatus.curdata.B.x < SYS_JoyData[index].buttoncalc[0]) SDL_PrivateJoystickButton(joystick, (Uint8)4, SDL_PRESSED); | |
| 486 else SDL_PrivateJoystickButton(joystick, (Uint8)4, SDL_RELEASED); | |
| 487 } | |
| 488 if (joystick->nbuttons>=6) | |
| 489 { | |
| 490 if (stGameStatus.curdata.B.y < SYS_JoyData[index].buttoncalc[1]) SDL_PrivateJoystickButton(joystick, (Uint8)5, SDL_PRESSED); | |
| 491 else SDL_PrivateJoystickButton(joystick, (Uint8)5, SDL_RELEASED); | |
| 492 } | |
| 493 if (joystick->nbuttons>=7) | |
| 494 { | |
| 495 if (stGameStatus.curdata.B.x > SYS_JoyData[index].buttoncalc[2]) SDL_PrivateJoystickButton(joystick, (Uint8)6, SDL_PRESSED); | |
| 496 else SDL_PrivateJoystickButton(joystick, (Uint8)6, SDL_RELEASED); | |
| 497 } | |
| 498 if (joystick->nbuttons>=8) | |
| 499 { | |
| 500 if (stGameStatus.curdata.B.y > SYS_JoyData[index].buttoncalc[3]) SDL_PrivateJoystickButton(joystick, (Uint8)7, SDL_PRESSED); | |
| 501 else SDL_PrivateJoystickButton(joystick, (Uint8)7, SDL_RELEASED); | |
| 502 } | |
| 503 | |
| 504 /* joystick hat events */ | |
| 505 /* Not Supported under OS/2 */ | |
| 506 /* joystick ball events */ | |
| 507 /* Not Supported under OS/2 */ | |
| 508 } | |
| 509 | |
| 510 | |
| 511 | |
| 512 /******************************************/ | |
| 513 /* Function to close a joystick after use */ | |
| 514 /******************************************/ | |
| 515 void SDL_SYS_JoystickClose(SDL_Joystick *joystick) | |
| 516 { | |
| 517 if (joystick->hwdata != NULL) | |
| 518 { | |
| 519 /* free system specific hardware data */ | |
| 520 free(joystick->hwdata); | |
| 521 } | |
| 522 } | |
| 523 | |
| 524 | |
| 525 | |
| 526 /********************************************************************/ | |
| 527 /* Function to perform any system-specific joystick related cleanup */ | |
| 528 /********************************************************************/ | |
| 529 void SDL_SYS_JoystickQuit(void) | |
| 530 { | |
| 531 joyPortClose(&hJoyPort); | |
| 532 } | |
| 533 | |
| 534 | |
| 535 | |
| 536 /************************/ | |
| 537 /************************/ | |
| 538 /* OS/2 Implementations */ | |
| 539 /************************/ | |
| 540 /************************/ | |
| 541 | |
| 542 | |
| 543 /*****************************************/ | |
| 544 /* Open Joystick Port, if not opened yet */ | |
| 545 /*****************************************/ | |
| 546 APIRET joyPortOpen(HFILE * hGame) | |
| 547 { | |
| 548 APIRET rc; /* Generic Return Code */ | |
| 549 ULONG ulAction; /* ? */ | |
| 550 ULONG ulVersion; /* Version of joystick driver */ | |
| 551 ULONG ulDataLen; /* Size of version data */ | |
| 552 | |
| 553 /* Verifies if joyport is not already open... */ | |
| 554 if (*hGame != NULL) return 0; | |
| 555 /* Open GAME$ for read */ | |
| 556 rc = DosOpen((PSZ)GAMEPDDNAME, hGame, &ulAction, 0, FILE_READONLY, | |
| 557 FILE_OPEN, OPEN_ACCESS_READONLY | OPEN_SHARE_DENYNONE, NULL); | |
| 558 if (rc != 0) | |
| 559 { | |
| 560 SDL_SetError("Could not open Joystick Port."); | |
| 561 return -1; | |
| 562 } | |
| 563 | |
| 564 /* Get Joystick Driver Version... must be 2.0 or higher */ | |
| 565 ulVersion = 0; | |
| 566 ulDataLen = sizeof(ulVersion); | |
| 567 rc = DosDevIOCtl( *hGame, IOCTL_CAT_USER, GAME_GET_VERSION, | |
| 568 NULL, 0, NULL, &ulVersion, ulDataLen, &ulDataLen); | |
| 569 if (rc != 0) | |
| 570 { | |
| 571 joyPortClose(hGame); | |
| 572 SDL_SetError("Could not get Joystick Driver version."); | |
| 573 return -1; | |
| 574 } | |
| 575 if (ulVersion < GAME_VERSION) | |
| 576 { | |
| 577 joyPortClose(hGame); | |
| 578 SDL_SetError("Driver too old. At least IBM driver version 2.0 required."); | |
| 579 return -1; | |
| 580 } | |
| 581 return 0; | |
| 582 } | |
| 583 | |
| 584 | |
| 585 | |
| 586 /****************************/ | |
| 587 /* Close JoyPort, if opened */ | |
| 588 /****************************/ | |
| 589 void joyPortClose(HFILE * hGame) | |
| 590 { | |
| 591 if (*hGame != NULL) DosClose(*hGame); | |
| 592 *hGame = NULL; | |
| 593 } | |
| 594 | |
| 595 | |
| 596 | |
| 597 /***************************/ | |
| 598 /* Get SDL Joystick EnvVar */ | |
| 599 /***************************/ | |
| 600 int joyGetEnv(struct _joycfg * joydata) | |
| 601 { | |
| 602 char *joyenv; /* Pointer to tested character */ | |
| 603 char tempnumber[5]; /* Temporary place to put numeric texts */ | |
| 604 | |
| 605 joyenv = getenv("SDL_OS2_JOYSTICK"); | |
| 606 if (joyenv == NULL) return 0; | |
| 607 /* Joystick Environment is defined! */ | |
| 608 while (*joyenv==' ' && *joyenv!=0) joyenv++; /* jump spaces... */ | |
| 609 /* If the string name starts with '... get if fully */ | |
| 610 if (*joyenv=='\'') joyenv+=joyGetData(++joyenv,joydata->name,'\'',sizeof(joydata->name)); | |
| 611 /* If not, get it until the next space */ | |
| 612 else if (*joyenv=='\"') joyenv+=joyGetData(++joyenv,joydata->name,'\"',sizeof(joydata->name)); | |
| 613 else joyenv+=joyGetData(joyenv,joydata->name,' ',sizeof(joydata->name)); | |
| 614 /* Now get the number of axes */ | |
| 615 while (*joyenv==' ' && *joyenv!=0) joyenv++; /* jump spaces... */ | |
| 616 joyenv+=joyGetData(joyenv,tempnumber,' ',sizeof(tempnumber)); | |
| 617 joydata->axes = atoi(tempnumber); | |
| 618 /* Now get the number of buttons */ | |
| 619 while (*joyenv==' ' && *joyenv!=0) joyenv++; /* jump spaces... */ | |
| 620 joyenv+=joyGetData(joyenv,tempnumber,' ',sizeof(tempnumber)); | |
| 621 joydata->buttons = atoi(tempnumber); | |
| 622 /* Now get the number of hats */ | |
| 623 while (*joyenv==' ' && *joyenv!=0) joyenv++; /* jump spaces... */ | |
| 624 joyenv+=joyGetData(joyenv,tempnumber,' ',sizeof(tempnumber)); | |
| 625 joydata->hats = atoi(tempnumber); | |
| 626 /* Now get the number of balls */ | |
| 627 while (*joyenv==' ' && *joyenv!=0) joyenv++; /* jump spaces... */ | |
| 628 joyenv+=joyGetData(joyenv,tempnumber,' ',sizeof(tempnumber)); | |
| 629 joydata->balls = atoi(tempnumber); | |
| 630 return 1; | |
| 631 } | |
| 632 | |
| 633 | |
| 634 | |
| 635 /************************************************************************/ | |
| 636 /* Get a text from in the string starting in joyenv until it finds */ | |
| 637 /* the stopchar or maxchars is reached. The result is placed in name. */ | |
| 638 /************************************************************************/ | |
| 639 int joyGetData(char *joyenv, char *name, char stopchar, size_t maxchars) | |
| 640 { | |
| 641 char *nameptr; /* Pointer to the selected character */ | |
| 642 int chcnt=0; /* Count how many characters where copied */ | |
| 643 | |
| 644 nameptr=name; | |
| 645 while (*joyenv!=stopchar && *joyenv!=0) | |
| 646 { | |
| 647 if (nameptr<(name+(maxchars-1))) | |
| 648 { | |
| 649 *nameptr = *joyenv; /* Only copy if smaller than maximum */ | |
| 650 nameptr++; | |
| 651 } | |
| 652 chcnt++; | |
| 653 joyenv++; | |
| 654 } | |
| 655 if (*joyenv==stopchar) | |
| 656 { | |
| 657 joyenv++; /* Jump stopchar */ | |
| 658 chcnt++; | |
| 659 } | |
| 660 *nameptr = 0; /* Mark last byte */ | |
| 661 return chcnt; | |
| 662 } | |
| 663 | |
| 664 |