Mercurial > sdl-ios-xcode
annotate src/joystick/os2/SDL_sysjoystick.c @ 4383:daf9e6037596 SDL-1.2
Gregory Smith
Another one for the "How did this ever work?" file: when
DX5_HandleMessage is called with WM_ACTIVATEAPP, it goes past the end
of the 2-element SDL_DIdev array and if there doesn't happen to be a 0
in the memory next to it, crashes. Patch against SVN attached.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 15 Nov 2009 17:21:24 +0000 |
| parents | a1b03ba2fcd0 |
| children |
| rev | line source |
|---|---|
| 1190 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 4159 | 3 Copyright (C) 1997-2009 Sam Lantinga |
| 1190 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
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6 modify it under the terms of the GNU Lesser General Public |
| 1190 | 7 License as published by the Free Software Foundation; either |
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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 | |
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13 Lesser General Public License for more details. |
| 1190 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 1190 | 18 |
| 19 Sam Lantinga | |
| 20 slouken@libsdl.org | |
| 21 */ | |
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22 #include "SDL_config.h" |
| 1190 | 23 |
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24 #ifdef SDL_JOYSTICK_OS2 |
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25 |
| 1190 | 26 /* OS/2 Joystick driver, contributed by Daniel Caetano */ |
| 27 | |
| 28 #include <mem.h> | |
| 29 | |
| 30 #define INCL_DOSDEVICES | |
| 31 #define INCL_DOSDEVIOCTL | |
| 32 #define INCL_DOSMEMMGR | |
| 33 #include <os2.h> | |
| 34 #include "joyos2.h" | |
| 35 | |
| 36 #include "SDL_joystick.h" | |
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37 #include "SDL_events.h" |
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38 #include "../SDL_sysjoystick.h" |
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39 #include "../SDL_joystick_c.h" |
| 1190 | 40 |
| 41 HFILE hJoyPort = NULL; /* Joystick GAME$ Port Address */ | |
| 42 #define MAX_JOYSTICKS 2 /* Maximum of two joysticks */ | |
| 43 #define MAX_AXES 4 /* each joystick can have up to 4 axes */ | |
| 44 #define MAX_BUTTONS 8 /* 8 buttons */ | |
| 45 #define MAX_HATS 0 /* 0 hats - OS/2 doesn't support it */ | |
| 46 #define MAX_BALLS 0 /* and 0 balls - OS/2 doesn't support it */ | |
| 47 #define AXIS_MIN -32768 /* minimum value for axes coordinate */ | |
| 48 #define AXIS_MAX 32767 /* maximum value for axes coordinate */ | |
| 49 #define MAX_JOYNAME 128 /* Joystick name may have 128 characters */ | |
| 50 /* limit axes to 256 possible positions to filter out noise */ | |
| 51 #define JOY_AXIS_THRESHOLD (((AXIS_MAX)-(AXIS_MIN))/256) | |
| 52 /* Calc Button Flag for buttons A to D */ | |
| 53 #define JOY_BUTTON_FLAG(n) (1<<n) | |
| 54 | |
| 55 /* Joystick data... hold information about detected devices */ | |
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56 typedef struct SYS_JoyData_s |
| 1190 | 57 { |
| 58 Sint8 id; // Device ID | |
| 59 char szDeviceName[MAX_JOYNAME]; // Device Name | |
| 60 char axes; // Number of axes | |
| 61 char buttons; // Number of buttons | |
| 62 char hats; // Number of buttons | |
| 63 char balls; // Number of buttons | |
| 64 int axes_min[MAX_AXES]; // minimum callibration value for axes | |
| 65 int axes_med[MAX_AXES]; // medium callibration value for axes | |
| 66 int axes_max[MAX_AXES]; // maximum callibration value for axes | |
| 67 int buttoncalc[4]; // Used for buttons 5, 6, 7 and 8. | |
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68 } SYS_JoyData_t, *SYS_JoyData_p; |
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69 |
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70 SYS_JoyData_t SYS_JoyData[MAX_JOYSTICKS]; |
| 1190 | 71 |
| 72 | |
| 73 /* Structure used to convert data from OS/2 driver format to SDL format */ | |
| 74 struct joystick_hwdata | |
| 75 { | |
| 76 Sint8 id; | |
| 77 struct _transaxes | |
| 78 { | |
| 79 int offset; /* Center Offset */ | |
| 80 float scale1; /* Center to left/up Scale */ | |
| 81 float scale2; /* Center to right/down Scale */ | |
| 82 } transaxes[MAX_AXES]; | |
| 83 }; | |
| 84 | |
| 85 /* Structure used to get values from Joystick Environment Variable */ | |
| 86 struct _joycfg | |
| 87 { | |
| 88 char name[MAX_JOYNAME]; | |
| 89 unsigned int axes; | |
| 90 unsigned int buttons; | |
| 91 unsigned int hats; | |
| 92 unsigned int balls; | |
| 93 }; | |
| 94 | |
| 95 /* OS/2 Implementation Function Prototypes */ | |
| 96 APIRET joyPortOpen(HFILE * hGame); | |
| 97 void joyPortClose(HFILE * hGame); | |
| 98 int joyGetData(char *joyenv, char *name, char stopchar, size_t maxchars); | |
| 99 int joyGetEnv(struct _joycfg * joydata); | |
| 100 | |
| 101 | |
| 102 | |
| 103 /************************************************************************/ | |
| 104 /* Function to scan the system for joysticks. */ | |
| 105 /* This function should set SDL_numjoysticks to the number of available */ | |
| 106 /* joysticks. Joystick 0 should be the system default joystick. */ | |
| 107 /* It should return 0, or -1 on an unrecoverable fatal error. */ | |
| 108 /************************************************************************/ | |
| 109 int SDL_SYS_JoystickInit(void) | |
| 110 { | |
| 111 APIRET rc; /* Generic OS/2 return code */ | |
| 112 GAME_PORT_STRUCT stJoyStatus; /* Joystick Status Structure */ | |
| 113 GAME_PARM_STRUCT stGameParms; /* Joystick Parameter Structure */ | |
| 114 GAME_CALIB_STRUCT stGameCalib; /* Calibration Struct */ | |
| 115 ULONG ulDataLen; /* Size of data */ | |
| 116 ULONG ulLastTick; /* Tick Counter for timing operations */ | |
| 117 Uint8 maxdevs; /* Maximum number of devices */ | |
| 118 Uint8 numdevs; /* Number of present devices */ | |
| 119 Uint8 maxbut; /* Maximum number of buttons... */ | |
| 120 Uint8 i; /* Temporary Count Vars */ | |
| 121 Uint8 ucNewJoystickMask; /* Mask for Joystick Detection */ | |
| 122 struct _joycfg joycfg; /* Joy Configuration from envvar */ | |
| 123 | |
| 124 | |
| 125 /* Get Max Number of Devices */ | |
| 126 rc = joyPortOpen(&hJoyPort); /* Open GAME$ port */ | |
| 127 if (rc != 0) return 0; /* Cannot open... report no joystick */ | |
| 128 ulDataLen = sizeof(stGameParms); | |
| 129 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_GET_PARMS, | |
| 130 NULL, 0, NULL, &stGameParms, ulDataLen, &ulDataLen); /* Ask device info */ | |
| 131 if (rc != 0) | |
| 132 { | |
| 133 joyPortClose(&hJoyPort); | |
| 134 SDL_SetError("Could not read joystick port."); | |
| 135 return -1; | |
| 136 } | |
| 137 if (stGameParms.useA != 0) maxdevs++; | |
| 138 if (stGameParms.useB != 0) maxdevs++; | |
| 139 if ( maxdevs > MAX_JOYSTICKS ) maxdevs = MAX_JOYSTICKS; | |
| 140 | |
| 141 /* Defines min/max axes values (callibration) */ | |
| 142 ulDataLen = sizeof(stGameCalib); | |
| 143 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_GET_CALIB, | |
| 144 NULL, 0, NULL, &stGameCalib, ulDataLen, &ulDataLen); | |
| 145 if (rc != 0) | |
| 146 { | |
| 147 joyPortClose(&hJoyPort); | |
| 148 SDL_SetError("Could not read callibration data."); | |
| 149 return -1; | |
| 150 } | |
| 151 | |
| 152 /* Determine how many joysticks are active */ | |
| 153 numdevs = 0; /* Points no device */ | |
| 154 ucNewJoystickMask = 0x0F; /* read all 4 joystick axis */ | |
| 155 ulDataLen = sizeof(ucNewJoystickMask); | |
| 156 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_PORT_RESET, | |
| 157 &ucNewJoystickMask, ulDataLen, &ulDataLen, NULL, 0, NULL); | |
| 158 if (rc == 0) | |
| 159 { | |
| 160 ulDataLen = sizeof(stJoyStatus); | |
| 161 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_PORT_GET, | |
| 162 NULL, 0, NULL, &stJoyStatus, ulDataLen, &ulDataLen); | |
| 163 if (rc != 0) | |
| 164 { | |
| 165 joyPortClose(&hJoyPort); | |
| 166 SDL_SetError("Could not call joystick port."); | |
| 167 return -1; | |
| 168 } | |
| 169 ulLastTick = stJoyStatus.ulJs_Ticks; | |
| 170 while (stJoyStatus.ulJs_Ticks == ulLastTick) | |
| 171 { | |
| 172 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_PORT_GET, | |
| 173 NULL, 0, NULL, &stJoyStatus, ulDataLen, &ulDataLen); | |
| 174 } | |
| 175 if ((stJoyStatus.ucJs_JoyStickMask & 0x03) > 0) numdevs++; | |
| 176 if (((stJoyStatus.ucJs_JoyStickMask >> 2) & 0x03) > 0) numdevs++; | |
| 177 } | |
| 178 | |
| 179 if (numdevs>maxdevs) numdevs=maxdevs; | |
| 180 | |
| 181 /* If *any* joystick was detected... Let's configure SDL for them */ | |
| 182 if (numdevs > 0) | |
| 183 { | |
| 184 /* Verify if it is a "user defined" joystick */ | |
| 185 if (joyGetEnv(&joycfg)) | |
| 186 { | |
| 187 GAME_3POS_STRUCT * axis[4]; | |
| 188 axis[0] = &stGameCalib.Ax; | |
| 189 axis[1] = &stGameCalib.Ay; | |
| 190 axis[2] = &stGameCalib.Bx; | |
| 191 axis[3] = &stGameCalib.By; | |
| 192 /* Say it has one device only (user defined is always one device only) */ | |
| 193 numdevs = 1; | |
| 194 /* Define Device 0 as... */ | |
| 195 SYS_JoyData[0].id=0; | |
| 196 /* Define Number of Axes... up to 4 */ | |
| 197 if (joycfg.axes>MAX_AXES) joycfg.axes = MAX_AXES; | |
| 198 SYS_JoyData[0].axes = joycfg.axes; | |
| 199 /* Define number of buttons... 8 if 2 axes, 6 if 3 axes and 4 if 4 axes */ | |
| 200 maxbut = MAX_BUTTONS; | |
| 201 if (joycfg.axes>2) maxbut-=((joycfg.axes-2)<<1); /* MAX_BUTTONS - 2*(axes-2) */ | |
| 202 if (joycfg.buttons > maxbut) joycfg.buttons = maxbut; | |
| 203 SYS_JoyData[0].buttons = joycfg.buttons; | |
| 204 /* Define number of hats */ | |
| 205 if (joycfg.hats > MAX_HATS) joycfg.hats = MAX_HATS; | |
| 206 SYS_JoyData[0].hats = joycfg.hats; | |
| 207 /* Define number of balls */ | |
| 208 if (joycfg.balls > MAX_BALLS) joycfg.balls = MAX_BALLS; | |
| 209 SYS_JoyData[0].balls = joycfg.balls; | |
| 210 /* Initialize Axes Callibration Values */ | |
| 211 for (i=0; i<joycfg.axes; i++) | |
| 212 { | |
| 213 SYS_JoyData[0].axes_min[i] = axis[i]->lower; | |
| 214 SYS_JoyData[0].axes_med[i] = axis[i]->centre; | |
| 215 SYS_JoyData[0].axes_max[i] = axis[i]->upper; | |
| 216 } | |
| 217 /* Initialize Buttons 5 to 8 structures */ | |
| 218 if (joycfg.buttons>=5) SYS_JoyData[0].buttoncalc[0]=((axis[2]->lower+axis[3]->centre)>>1); | |
| 219 if (joycfg.buttons>=6) SYS_JoyData[0].buttoncalc[1]=((axis[3]->lower+axis[3]->centre)>>1); | |
| 220 if (joycfg.buttons>=7) SYS_JoyData[0].buttoncalc[2]=((axis[2]->upper+axis[3]->centre)>>1); | |
| 221 if (joycfg.buttons>=8) SYS_JoyData[0].buttoncalc[3]=((axis[3]->upper+axis[3]->centre)>>1); | |
| 222 /* Intialize Joystick Name */ | |
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223 SDL_strlcpy (SYS_JoyData[0].szDeviceName,joycfg.name, SDL_arraysize(SYS_JoyData[0].szDeviceName)); |
| 1190 | 224 } |
| 225 /* Default Init ... autoconfig */ | |
| 226 else | |
| 227 { | |
| 228 /* if two devices were detected... configure as Joy1 4 axis and Joy2 2 axis */ | |
| 229 if (numdevs==2) | |
| 230 { | |
| 231 /* Define Device 0 as 4 axes, 4 buttons */ | |
| 232 SYS_JoyData[0].id=0; | |
| 233 SYS_JoyData[0].axes = 4; | |
| 234 SYS_JoyData[0].buttons = 4; | |
| 235 SYS_JoyData[0].hats = 0; | |
| 236 SYS_JoyData[0].balls = 0; | |
| 237 SYS_JoyData[0].axes_min[0] = stGameCalib.Ax.lower; | |
| 238 SYS_JoyData[0].axes_med[0] = stGameCalib.Ax.centre; | |
| 239 SYS_JoyData[0].axes_max[0] = stGameCalib.Ax.upper; | |
| 240 SYS_JoyData[0].axes_min[1] = stGameCalib.Ay.lower; | |
| 241 SYS_JoyData[0].axes_med[1] = stGameCalib.Ay.centre; | |
| 242 SYS_JoyData[0].axes_max[1] = stGameCalib.Ay.upper; | |
| 243 SYS_JoyData[0].axes_min[2] = stGameCalib.Bx.lower; | |
| 244 SYS_JoyData[0].axes_med[2] = stGameCalib.Bx.centre; | |
| 245 SYS_JoyData[0].axes_max[2] = stGameCalib.Bx.upper; | |
| 246 SYS_JoyData[0].axes_min[3] = stGameCalib.By.lower; | |
| 247 SYS_JoyData[0].axes_med[3] = stGameCalib.By.centre; | |
| 248 SYS_JoyData[0].axes_max[3] = stGameCalib.By.upper; | |
| 249 /* Define Device 1 as 2 axes, 2 buttons */ | |
| 250 SYS_JoyData[1].id=1; | |
| 251 SYS_JoyData[1].axes = 2; | |
| 252 SYS_JoyData[1].buttons = 2; | |
| 253 SYS_JoyData[1].hats = 0; | |
| 254 SYS_JoyData[1].balls = 0; | |
| 255 SYS_JoyData[1].axes_min[0] = stGameCalib.Bx.lower; | |
| 256 SYS_JoyData[1].axes_med[0] = stGameCalib.Bx.centre; | |
| 257 SYS_JoyData[1].axes_max[0] = stGameCalib.Bx.upper; | |
| 258 SYS_JoyData[1].axes_min[1] = stGameCalib.By.lower; | |
| 259 SYS_JoyData[1].axes_med[1] = stGameCalib.By.centre; | |
| 260 SYS_JoyData[1].axes_max[1] = stGameCalib.By.upper; | |
| 261 } | |
| 262 /* One joystick only? */ | |
| 263 else | |
| 264 { | |
| 265 /* If it is joystick A... */ | |
| 266 if ((stJoyStatus.ucJs_JoyStickMask & 0x03) > 0) | |
| 267 { | |
| 268 /* Define Device 0 as 2 axes, 4 buttons */ | |
| 269 SYS_JoyData[0].id=0; | |
| 270 SYS_JoyData[0].axes = 2; | |
| 271 SYS_JoyData[0].buttons = 4; | |
| 272 SYS_JoyData[0].hats = 0; | |
| 273 SYS_JoyData[0].balls = 0; | |
| 274 SYS_JoyData[0].axes_min[0] = stGameCalib.Ax.lower; | |
| 275 SYS_JoyData[0].axes_med[0] = stGameCalib.Ax.centre; | |
| 276 SYS_JoyData[0].axes_max[0] = stGameCalib.Ax.upper; | |
| 277 SYS_JoyData[0].axes_min[1] = stGameCalib.Ay.lower; | |
| 278 SYS_JoyData[0].axes_med[1] = stGameCalib.Ay.centre; | |
| 279 SYS_JoyData[0].axes_max[1] = stGameCalib.Ay.upper; | |
| 280 } | |
| 281 /* If not, it is joystick B */ | |
| 282 else | |
| 283 { | |
| 284 /* Define Device 1 as 2 axes, 2 buttons */ | |
| 285 SYS_JoyData[0].id=1; | |
| 286 SYS_JoyData[0].axes = 2; | |
| 287 SYS_JoyData[0].buttons = 2; | |
| 288 SYS_JoyData[0].hats = 0; | |
| 289 SYS_JoyData[0].balls = 0; | |
| 290 SYS_JoyData[0].axes_min[0] = stGameCalib.Bx.lower; | |
| 291 SYS_JoyData[0].axes_med[0] = stGameCalib.Bx.centre; | |
| 292 SYS_JoyData[0].axes_max[0] = stGameCalib.Bx.upper; | |
| 293 SYS_JoyData[0].axes_min[1] = stGameCalib.By.lower; | |
| 294 SYS_JoyData[0].axes_med[1] = stGameCalib.By.centre; | |
| 295 SYS_JoyData[0].axes_max[1] = stGameCalib.By.upper; | |
| 296 } | |
| 297 } | |
| 298 /* Hack to define Joystick Port Names */ | |
| 299 if ( numdevs > maxdevs ) numdevs = maxdevs; | |
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300 for (i=0; i<numdevs; i++) |
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301 SDL_snprintf (SYS_JoyData[i].szDeviceName, SDL_arraysize(SYS_JoyData[i].szDeviceName), "Default Joystick %c", 'A'+SYS_JoyData[i].id); |
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302 |
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303 } |
| 1190 | 304 } |
| 305 /* Return the number of devices found */ | |
| 306 return(numdevs); | |
| 307 } | |
| 308 | |
| 309 | |
| 310 /***********************************************************/ | |
| 311 /* Function to get the device-dependent name of a joystick */ | |
| 312 /***********************************************************/ | |
| 313 const char *SDL_SYS_JoystickName(int index) | |
| 314 { | |
| 315 /* No need to verify if device exists, already done in upper layer */ | |
| 316 return(SYS_JoyData[index].szDeviceName); | |
| 317 } | |
| 318 | |
| 319 | |
| 320 | |
| 321 /******************************************************************************/ | |
| 322 /* Function to open a joystick for use. */ | |
| 323 /* The joystick to open is specified by the index field of the joystick. */ | |
| 324 /* This should fill the nbuttons and naxes fields of the joystick structure. */ | |
| 325 /* It returns 0, or -1 if there is an error. */ | |
| 326 /******************************************************************************/ | |
| 327 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick) | |
| 328 { | |
| 329 int index; /* Index shortcut for index in joystick structure */ | |
| 330 int i; /* Generic Counter */ | |
| 331 | |
| 332 /* allocate memory for system specific hardware data */ | |
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333 joystick->hwdata = (struct joystick_hwdata *) SDL_malloc(sizeof(*joystick->hwdata)); |
| 1190 | 334 if (joystick->hwdata == NULL) |
| 335 { | |
| 336 SDL_OutOfMemory(); | |
| 337 return(-1); | |
| 338 } | |
| 339 /* Reset Hardware Data */ | |
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340 SDL_memset(joystick->hwdata, 0, sizeof(*joystick->hwdata)); |
| 1190 | 341 |
| 342 /* ShortCut Pointer */ | |
| 343 index = joystick->index; | |
| 344 /* Define offsets and scales for all axes */ | |
| 345 joystick->hwdata->id = SYS_JoyData[index].id; | |
| 346 for ( i = 0; i < MAX_AXES; ++i ) | |
| 347 { | |
| 348 if ( (i<2) || i < SYS_JoyData[index].axes ) | |
| 349 { | |
| 350 joystick->hwdata->transaxes[i].offset = ((AXIS_MAX + AXIS_MIN)>>1) - SYS_JoyData[index].axes_med[i]; | |
| 351 //joystick->hwdata->transaxes[i].scale = (float)((AXIS_MAX - AXIS_MIN)/(SYS_JoyData[index].axes_max[i]-SYS_JoyData[index].axes_min[i])); | |
| 352 joystick->hwdata->transaxes[i].scale1 = (float)abs((AXIS_MIN/SYS_JoyData[index].axes_min[i])); | |
| 353 joystick->hwdata->transaxes[i].scale2 = (float)abs((AXIS_MAX/SYS_JoyData[index].axes_max[i])); | |
| 354 } | |
| 355 else | |
| 356 { | |
| 357 joystick->hwdata->transaxes[i].offset = 0; | |
| 358 //joystick->hwdata->transaxes[i].scale = 1.0; /* Just in case */ | |
| 359 joystick->hwdata->transaxes[i].scale1 = 1.0; /* Just in case */ | |
| 360 joystick->hwdata->transaxes[i].scale2 = 1.0; /* Just in case */ | |
| 361 } | |
| 362 } | |
| 363 | |
| 364 /* fill nbuttons, naxes, and nhats fields */ | |
| 365 joystick->nbuttons = SYS_JoyData[index].buttons; | |
| 366 joystick->naxes = SYS_JoyData[index].axes; | |
| 367 /* joystick->nhats = SYS_JoyData[index].hats; */ | |
| 368 joystick->nhats = 0; /* No support for hats at this time */ | |
| 369 /* joystick->nballs = SYS_JoyData[index].balls; */ | |
| 370 joystick->nballs = 0; /* No support for balls at this time */ | |
| 371 return 0; | |
| 372 } | |
| 373 | |
| 374 | |
| 375 | |
| 376 /***************************************************************************/ | |
| 377 /* Function to update the state of a joystick - called as a device poll. */ | |
| 378 /* This function shouldn't update the joystick structure directly, */ | |
| 379 /* but instead should call SDL_PrivateJoystick*() to deliver events */ | |
| 380 /* and update joystick device state. */ | |
| 381 /***************************************************************************/ | |
| 382 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick) | |
| 383 { | |
| 384 APIRET rc; /* Generic OS/2 return code */ | |
| 385 int index; /* index shortcurt to joystick index */ | |
| 386 int i; /* Generic counter */ | |
| 387 int normbut; /* Number of buttons reported by joystick */ | |
| 388 int corr; /* Correction for button names */ | |
| 389 Sint16 value, change; /* Values used to update axis values */ | |
| 390 struct _transaxes *transaxes; /* Shortcut for Correction structure */ | |
| 391 Uint32 pos[MAX_AXES]; /* Vector to inform the Axis status */ | |
| 392 ULONG ulDataLen; /* Size of data */ | |
| 393 GAME_STATUS_STRUCT stGameStatus; /* Joystick Status Structure */ | |
| 394 | |
| 395 ulDataLen = sizeof(stGameStatus); | |
| 396 rc = DosDevIOCtl(hJoyPort, IOCTL_CAT_USER, GAME_GET_STATUS, | |
| 397 NULL, 0, NULL, &stGameStatus, ulDataLen, &ulDataLen); | |
| 398 if (rc != 0) | |
| 399 { | |
| 400 SDL_SetError("Could not read joystick status."); | |
| 401 return; /* Could not read data */ | |
| 402 } | |
| 403 | |
| 404 /* Shortcut pointer */ | |
| 405 index = joystick->index; | |
| 406 /* joystick motion events */ | |
| 407 | |
| 408 if (SYS_JoyData[index].id == 0) | |
| 409 { | |
| 410 pos[0] = stGameStatus.curdata.A.x; | |
| 411 pos[1] = stGameStatus.curdata.A.y; | |
| 412 if (SYS_JoyData[index].axes >= 3) pos[2] = stGameStatus.curdata.B.x; | |
| 413 else pos[2]=0; | |
| 414 if (SYS_JoyData[index].axes >= 4) pos[3] = stGameStatus.curdata.B.y; | |
| 415 else pos[3]=0; | |
| 416 pos[4]=0; /* OS/2 basic drivers do not support more than 4 axes joysticks */ | |
| 417 pos[5]=0; | |
| 418 } | |
| 419 else if (SYS_JoyData[index].id == 1) | |
| 420 { | |
| 421 pos[0] = stGameStatus.curdata.B.x; | |
| 422 pos[1] = stGameStatus.curdata.B.y; | |
| 423 pos[2]=0; | |
| 424 pos[3]=0; | |
| 425 pos[4]=0; | |
| 426 pos[5]=0; | |
| 427 } | |
| 428 | |
| 429 /* Corrects the movements using the callibration */ | |
| 430 transaxes = joystick->hwdata->transaxes; | |
| 431 for (i = 0; i < joystick->naxes; i++) | |
| 432 { | |
| 433 value = pos[i] + transaxes[i].offset; | |
| 434 if (value<0) | |
| 435 { | |
| 436 value*=transaxes[i].scale1; | |
| 437 if (value>0) value = AXIS_MIN; | |
| 438 } | |
| 439 else | |
| 440 { | |
| 441 value*=transaxes[i].scale2; | |
| 442 if (value<0) value = AXIS_MAX; | |
| 443 } | |
| 444 change = (value - joystick->axes[i]); | |
| 445 if ( (change < -JOY_AXIS_THRESHOLD) || (change > JOY_AXIS_THRESHOLD) ) | |
| 446 { | |
| 447 SDL_PrivateJoystickAxis(joystick, (Uint8)i, (Sint16)value); | |
| 448 } | |
| 449 } | |
| 450 | |
| 451 /* joystick button A to D events */ | |
| 452 if (SYS_JoyData[index].id == 1) corr = 2; | |
| 453 else corr = 0; | |
| 454 normbut=4; /* Number of normal buttons */ | |
| 455 if (joystick->nbuttons<normbut) normbut = joystick->nbuttons; | |
| 456 for ( i = corr; (i-corr) < normbut; ++i ) | |
| 457 { | |
| 458 /* | |
| 459 Button A: 1110 0000 | |
| 460 Button B: 1101 0000 | |
| 461 Button C: 1011 0000 | |
| 462 Button D: 0111 0000 | |
| 463 */ | |
| 464 if ( (~stGameStatus.curdata.butMask)>>4 & JOY_BUTTON_FLAG(i) ) | |
| 465 { | |
| 466 if ( ! joystick->buttons[i-corr] ) | |
| 467 { | |
| 468 SDL_PrivateJoystickButton(joystick, (Uint8)(i-corr), SDL_PRESSED); | |
| 469 } | |
| 470 } | |
| 471 else | |
| 472 { | |
| 473 if ( joystick->buttons[i-corr] ) | |
| 474 { | |
| 475 SDL_PrivateJoystickButton(joystick, (Uint8)(i-corr), SDL_RELEASED); | |
| 476 } | |
| 477 } | |
| 478 } | |
| 479 | |
| 480 /* Joystick button E to H buttons */ | |
| 481 /* | |
| 482 Button E: Axis 2 X Left | |
| 483 Button F: Axis 2 Y Up | |
| 484 Button G: Axis 2 X Right | |
| 485 Button H: Axis 2 Y Down | |
| 486 */ | |
| 487 if (joystick->nbuttons>=5) | |
| 488 { | |
| 489 if (stGameStatus.curdata.B.x < SYS_JoyData[index].buttoncalc[0]) SDL_PrivateJoystickButton(joystick, (Uint8)4, SDL_PRESSED); | |
| 490 else SDL_PrivateJoystickButton(joystick, (Uint8)4, SDL_RELEASED); | |
| 491 } | |
| 492 if (joystick->nbuttons>=6) | |
| 493 { | |
| 494 if (stGameStatus.curdata.B.y < SYS_JoyData[index].buttoncalc[1]) SDL_PrivateJoystickButton(joystick, (Uint8)5, SDL_PRESSED); | |
| 495 else SDL_PrivateJoystickButton(joystick, (Uint8)5, SDL_RELEASED); | |
| 496 } | |
| 497 if (joystick->nbuttons>=7) | |
| 498 { | |
| 499 if (stGameStatus.curdata.B.x > SYS_JoyData[index].buttoncalc[2]) SDL_PrivateJoystickButton(joystick, (Uint8)6, SDL_PRESSED); | |
| 500 else SDL_PrivateJoystickButton(joystick, (Uint8)6, SDL_RELEASED); | |
| 501 } | |
| 502 if (joystick->nbuttons>=8) | |
| 503 { | |
| 504 if (stGameStatus.curdata.B.y > SYS_JoyData[index].buttoncalc[3]) SDL_PrivateJoystickButton(joystick, (Uint8)7, SDL_PRESSED); | |
| 505 else SDL_PrivateJoystickButton(joystick, (Uint8)7, SDL_RELEASED); | |
| 506 } | |
| 507 | |
| 508 /* joystick hat events */ | |
| 509 /* Not Supported under OS/2 */ | |
| 510 /* joystick ball events */ | |
| 511 /* Not Supported under OS/2 */ | |
| 512 } | |
| 513 | |
| 514 | |
| 515 | |
| 516 /******************************************/ | |
| 517 /* Function to close a joystick after use */ | |
| 518 /******************************************/ | |
| 519 void SDL_SYS_JoystickClose(SDL_Joystick *joystick) | |
| 520 { | |
| 521 if (joystick->hwdata != NULL) | |
| 522 { | |
| 523 /* free system specific hardware data */ | |
|
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524 SDL_free(joystick->hwdata); |
| 1190 | 525 } |
| 526 } | |
| 527 | |
| 528 | |
| 529 | |
| 530 /********************************************************************/ | |
| 531 /* Function to perform any system-specific joystick related cleanup */ | |
| 532 /********************************************************************/ | |
| 533 void SDL_SYS_JoystickQuit(void) | |
| 534 { | |
| 535 joyPortClose(&hJoyPort); | |
| 536 } | |
| 537 | |
| 538 | |
| 539 | |
| 540 /************************/ | |
| 541 /************************/ | |
| 542 /* OS/2 Implementations */ | |
| 543 /************************/ | |
| 544 /************************/ | |
| 545 | |
| 546 | |
| 547 /*****************************************/ | |
| 548 /* Open Joystick Port, if not opened yet */ | |
| 549 /*****************************************/ | |
| 550 APIRET joyPortOpen(HFILE * hGame) | |
| 551 { | |
| 552 APIRET rc; /* Generic Return Code */ | |
| 553 ULONG ulAction; /* ? */ | |
| 554 ULONG ulVersion; /* Version of joystick driver */ | |
| 555 ULONG ulDataLen; /* Size of version data */ | |
| 556 | |
| 557 /* Verifies if joyport is not already open... */ | |
| 558 if (*hGame != NULL) return 0; | |
| 559 /* Open GAME$ for read */ | |
| 560 rc = DosOpen((PSZ)GAMEPDDNAME, hGame, &ulAction, 0, FILE_READONLY, | |
| 561 FILE_OPEN, OPEN_ACCESS_READONLY | OPEN_SHARE_DENYNONE, NULL); | |
| 562 if (rc != 0) | |
| 563 { | |
| 564 SDL_SetError("Could not open Joystick Port."); | |
| 565 return -1; | |
| 566 } | |
| 567 | |
| 568 /* Get Joystick Driver Version... must be 2.0 or higher */ | |
| 569 ulVersion = 0; | |
| 570 ulDataLen = sizeof(ulVersion); | |
| 571 rc = DosDevIOCtl( *hGame, IOCTL_CAT_USER, GAME_GET_VERSION, | |
| 572 NULL, 0, NULL, &ulVersion, ulDataLen, &ulDataLen); | |
| 573 if (rc != 0) | |
| 574 { | |
| 575 joyPortClose(hGame); | |
| 576 SDL_SetError("Could not get Joystick Driver version."); | |
| 577 return -1; | |
| 578 } | |
| 579 if (ulVersion < GAME_VERSION) | |
| 580 { | |
| 581 joyPortClose(hGame); | |
| 582 SDL_SetError("Driver too old. At least IBM driver version 2.0 required."); | |
| 583 return -1; | |
| 584 } | |
| 585 return 0; | |
| 586 } | |
| 587 | |
| 588 | |
| 589 | |
| 590 /****************************/ | |
| 591 /* Close JoyPort, if opened */ | |
| 592 /****************************/ | |
| 593 void joyPortClose(HFILE * hGame) | |
| 594 { | |
| 595 if (*hGame != NULL) DosClose(*hGame); | |
| 596 *hGame = NULL; | |
| 597 } | |
| 598 | |
| 599 | |
| 600 | |
| 601 /***************************/ | |
| 602 /* Get SDL Joystick EnvVar */ | |
| 603 /***************************/ | |
| 604 int joyGetEnv(struct _joycfg * joydata) | |
| 605 { | |
| 606 char *joyenv; /* Pointer to tested character */ | |
| 607 char tempnumber[5]; /* Temporary place to put numeric texts */ | |
| 608 | |
|
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609 joyenv = SDL_getenv("SDL_OS2_JOYSTICK"); |
| 1190 | 610 if (joyenv == NULL) return 0; |
| 611 /* Joystick Environment is defined! */ | |
| 612 while (*joyenv==' ' && *joyenv!=0) joyenv++; /* jump spaces... */ | |
| 613 /* If the string name starts with '... get if fully */ | |
| 614 if (*joyenv=='\'') joyenv+=joyGetData(++joyenv,joydata->name,'\'',sizeof(joydata->name)); | |
| 615 /* If not, get it until the next space */ | |
| 616 else if (*joyenv=='\"') joyenv+=joyGetData(++joyenv,joydata->name,'\"',sizeof(joydata->name)); | |
| 617 else joyenv+=joyGetData(joyenv,joydata->name,' ',sizeof(joydata->name)); | |
| 618 /* Now get the number of axes */ | |
| 619 while (*joyenv==' ' && *joyenv!=0) joyenv++; /* jump spaces... */ | |
| 620 joyenv+=joyGetData(joyenv,tempnumber,' ',sizeof(tempnumber)); | |
| 621 joydata->axes = atoi(tempnumber); | |
| 622 /* Now get the number of buttons */ | |
| 623 while (*joyenv==' ' && *joyenv!=0) joyenv++; /* jump spaces... */ | |
| 624 joyenv+=joyGetData(joyenv,tempnumber,' ',sizeof(tempnumber)); | |
| 625 joydata->buttons = atoi(tempnumber); | |
| 626 /* Now get the number of hats */ | |
| 627 while (*joyenv==' ' && *joyenv!=0) joyenv++; /* jump spaces... */ | |
| 628 joyenv+=joyGetData(joyenv,tempnumber,' ',sizeof(tempnumber)); | |
| 629 joydata->hats = atoi(tempnumber); | |
| 630 /* Now get the number of balls */ | |
| 631 while (*joyenv==' ' && *joyenv!=0) joyenv++; /* jump spaces... */ | |
| 632 joyenv+=joyGetData(joyenv,tempnumber,' ',sizeof(tempnumber)); | |
| 633 joydata->balls = atoi(tempnumber); | |
| 634 return 1; | |
| 635 } | |
| 636 | |
| 637 | |
| 638 | |
| 639 /************************************************************************/ | |
| 640 /* Get a text from in the string starting in joyenv until it finds */ | |
| 641 /* the stopchar or maxchars is reached. The result is placed in name. */ | |
| 642 /************************************************************************/ | |
| 643 int joyGetData(char *joyenv, char *name, char stopchar, size_t maxchars) | |
| 644 { | |
| 645 char *nameptr; /* Pointer to the selected character */ | |
| 646 int chcnt=0; /* Count how many characters where copied */ | |
| 647 | |
| 648 nameptr=name; | |
| 649 while (*joyenv!=stopchar && *joyenv!=0) | |
| 650 { | |
| 651 if (nameptr<(name+(maxchars-1))) | |
| 652 { | |
| 653 *nameptr = *joyenv; /* Only copy if smaller than maximum */ | |
| 654 nameptr++; | |
| 655 } | |
| 656 chcnt++; | |
| 657 joyenv++; | |
| 658 } | |
| 659 if (*joyenv==stopchar) | |
| 660 { | |
| 661 joyenv++; /* Jump stopchar */ | |
| 662 chcnt++; | |
| 663 } | |
| 664 *nameptr = 0; /* Mark last byte */ | |
| 665 return chcnt; | |
| 666 } | |
| 667 | |
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668 #endif /* SDL_JOYSTICK_OS2 */ |