Mercurial > sdl-ios-xcode
annotate src/joystick/macos/SDL_sysjoystick.c @ 1175:867f521591e5
Fixed Altivec support on Mac OS X.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Thu, 17 Nov 2005 03:43:42 +0000 |
| parents | 609c060fd2a2 |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2004 (Happy New Year!)
Sam Lantinga <slouken@libsdl.org>
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|
3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 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 | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* SDL stuff -- "SDL_sysjoystick.c" | |
| 29 MacOS joystick functions by Frederick Reitberger | |
| 30 | |
| 31 The code that follows is meant for SDL. Use at your own risk. | |
| 32 */ | |
| 33 | |
| 34 #include <string.h> | |
| 35 | |
| 36 #include <InputSprocket.h> | |
| 37 | |
| 38 #include "SDL_error.h" | |
| 39 #include "SDL_joystick.h" | |
| 40 #include "SDL_sysjoystick.h" | |
| 41 #include "SDL_joystick_c.h" | |
| 42 | |
| 43 | |
| 44 /* The max number of joysticks we will detect */ | |
| 45 #define MAX_JOYSTICKS 16 | |
| 46 /* Limit ourselves to 32 elements per device */ | |
| 47 #define kMaxReferences 32 | |
| 48 | |
| 49 #define ISpSymmetricAxisToFloat(axis) ((((float) axis) - kISpAxisMiddle) / (kISpAxisMaximum-kISpAxisMiddle)) | |
| 50 #define ISpAsymmetricAxisToFloat(axis) (((float) axis) / (kISpAxisMaximum)) | |
| 51 | |
| 52 | |
| 53 static ISpDeviceReference SYS_Joysticks[MAX_JOYSTICKS]; | |
| 54 static ISpElementListReference SYS_Elements[MAX_JOYSTICKS]; | |
| 55 static ISpDeviceDefinition SYS_DevDef[MAX_JOYSTICKS]; | |
| 56 | |
| 57 struct joystick_hwdata | |
| 58 { | |
| 59 char name[64]; | |
| 60 /* Uint8 id;*/ | |
| 61 ISpElementReference refs[kMaxReferences]; | |
| 62 /* gonna need some sort of mapping info */ | |
| 63 }; | |
| 64 | |
| 65 | |
| 66 /* Function to scan the system for joysticks. | |
| 67 * Joystick 0 should be the system default joystick. | |
| 68 * This function should return the number of available joysticks, or -1 | |
| 69 * on an unrecoverable fatal error. | |
| 70 */ | |
| 71 int SDL_SYS_JoystickInit(void) | |
| 72 { | |
| 73 static ISpDeviceClass classes[4] = { | |
| 74 kISpDeviceClass_Joystick, | |
|
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The MacOSX Carbon/Cocoa/X11 all in one library patch. Relevant emails:
Ryan C. Gordon <icculus@icculus.org>
parents:
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75 #if kISpDeviceClass_Gamepad |
| 0 | 76 kISpDeviceClass_Gamepad, |
|
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The MacOSX Carbon/Cocoa/X11 all in one library patch. Relevant emails:
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
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77 #endif |
| 0 | 78 kISpDeviceClass_Wheel, |
| 79 0 | |
| 80 }; | |
| 81 OSErr err; | |
| 82 int i; | |
| 83 UInt32 count, numJoysticks; | |
| 84 | |
| 85 if ( (Ptr)0 == (Ptr)ISpStartup ) { | |
| 86 SDL_SetError("InputSprocket not installed"); | |
| 87 return -1; // InputSprocket not installed | |
| 88 } | |
| 89 | |
| 90 if( (Ptr)0 == (Ptr)ISpGetVersion ) { | |
| 91 SDL_SetError("InputSprocket not version 1.1 or newer"); | |
| 92 return -1; // old version of ISp (not at least 1.1) | |
| 93 } | |
| 94 | |
| 95 ISpStartup(); | |
| 96 | |
| 97 /* Get all the joysticks */ | |
| 98 numJoysticks = 0; | |
| 99 for ( i=0; classes[i]; ++i ) { | |
| 100 count = 0; | |
| 101 err = ISpDevices_ExtractByClass( | |
| 102 classes[i], | |
| 103 MAX_JOYSTICKS-numJoysticks, | |
| 104 &count, | |
| 105 &SYS_Joysticks[numJoysticks]); | |
| 106 numJoysticks += count; | |
| 107 } | |
| 108 | |
| 109 for(i = 0; i < numJoysticks; i++) | |
| 110 { | |
| 111 ISpDevice_GetDefinition( | |
| 112 SYS_Joysticks[i], sizeof(ISpDeviceDefinition), | |
| 113 &SYS_DevDef[i]); | |
| 114 | |
| 115 err = ISpElementList_New( | |
| 116 0, NULL, | |
| 117 &SYS_Elements[i], 0); | |
| 118 | |
| 119 if (err) { | |
| 120 SDL_OutOfMemory(); | |
| 121 return -1; | |
| 122 } | |
| 123 | |
| 124 ISpDevice_GetElementList( | |
| 125 SYS_Joysticks[i], | |
| 126 &SYS_Elements[i]); | |
| 127 } | |
| 128 | |
| 129 ISpDevices_Deactivate(numJoysticks, SYS_Joysticks); | |
| 130 | |
| 131 return numJoysticks; | |
| 132 } | |
| 133 | |
| 134 /* Function to get the device-dependent name of a joystick */ | |
| 135 const char *SDL_SYS_JoystickName(int index) | |
| 136 { | |
| 137 static char name[64]; | |
| 138 int len; | |
| 139 | |
| 140 /* convert pascal string to c-string */ | |
| 141 len = SYS_DevDef[index].deviceName[0]; | |
| 142 if ( len >= sizeof(name) ) { | |
| 143 len = (sizeof(name) - 1); | |
| 144 } | |
| 145 memcpy(name, &SYS_DevDef[index].deviceName[1], len); | |
| 146 name[len] = '\0'; | |
| 147 | |
| 148 return name; | |
| 149 } | |
| 150 | |
| 151 /* Function to open a joystick for use. | |
| 152 The joystick to open is specified by the index field of the joystick. | |
| 153 This should fill the nbuttons and naxes fields of the joystick structure. | |
| 154 It returns 0, or -1 if there is an error. | |
| 155 */ | |
| 156 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick) | |
| 157 { | |
| 158 int index; | |
| 159 UInt32 count, gotCount, count2; | |
| 160 long numAxis, numButtons, numHats, numBalls; | |
| 161 | |
| 162 count = kMaxReferences; | |
| 163 count2 = 0; | |
| 164 numAxis = numButtons = numHats = numBalls = 0; | |
| 165 | |
| 166 index = joystick->index; | |
| 167 | |
| 168 /* allocate memory for system specific hardware data */ | |
| 169 joystick->hwdata = (struct joystick_hwdata *) malloc(sizeof(*joystick->hwdata)); | |
| 170 if (joystick->hwdata == NULL) | |
| 171 { | |
| 172 SDL_OutOfMemory(); | |
| 173 return(-1); | |
| 174 } | |
| 175 memset(joystick->hwdata, 0, sizeof(*joystick->hwdata)); | |
| 176 strcpy(joystick->hwdata->name, SDL_SYS_JoystickName(index)); | |
| 177 joystick->name = joystick->hwdata->name; | |
| 178 | |
| 179 ISpElementList_ExtractByKind( | |
| 180 SYS_Elements[index], | |
| 181 kISpElementKind_Axis, | |
| 182 count, | |
| 183 &gotCount, | |
| 184 joystick->hwdata->refs); | |
| 185 | |
| 186 numAxis = gotCount; | |
| 187 count -= gotCount; | |
| 188 count2 += gotCount; | |
| 189 | |
| 190 ISpElementList_ExtractByKind( | |
| 191 SYS_Elements[index], | |
| 192 kISpElementKind_DPad, | |
| 193 count, | |
| 194 &gotCount, | |
| 195 &(joystick->hwdata->refs[count2])); | |
| 196 | |
| 197 numHats = gotCount; | |
| 198 count -= gotCount; | |
| 199 count2 += gotCount; | |
| 200 | |
| 201 ISpElementList_ExtractByKind( | |
| 202 SYS_Elements[index], | |
| 203 kISpElementKind_Button, | |
| 204 count, | |
| 205 &gotCount, | |
| 206 &(joystick->hwdata->refs[count2])); | |
| 207 | |
| 208 numButtons = gotCount; | |
| 209 count -= gotCount; | |
| 210 count2 += gotCount; | |
| 211 | |
| 212 joystick->naxes = numAxis; | |
| 213 joystick->nhats = numHats; | |
| 214 joystick->nballs = numBalls; | |
| 215 joystick->nbuttons = numButtons; | |
| 216 | |
| 217 ISpDevices_Activate( | |
| 218 1, | |
| 219 &SYS_Joysticks[index]); | |
| 220 | |
| 221 return 0; | |
| 222 } | |
| 223 | |
| 224 /* Function to update the state of a joystick - called as a device poll. | |
| 225 * This function shouldn't update the joystick structure directly, | |
| 226 * but instead should call SDL_PrivateJoystick*() to deliver events | |
| 227 * and update joystick device state. | |
| 228 */ | |
| 229 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick) | |
| 230 { | |
| 231 int i, j; | |
| 232 ISpAxisData a; | |
| 233 ISpDPadData b; | |
| 234 //ISpDeltaData c; | |
| 235 ISpButtonData d; | |
| 236 | |
| 237 for(i = 0, j = 0; i < joystick->naxes; i++, j++) | |
| 238 { | |
| 239 Sint16 value; | |
| 240 | |
| 241 ISpElement_GetSimpleState( | |
| 242 joystick->hwdata->refs[j], | |
| 243 &a); | |
| 244 value = (ISpSymmetricAxisToFloat(a)* 32767.0); | |
| 245 if ( value != joystick->axes[i] ) { | |
| 246 SDL_PrivateJoystickAxis(joystick, i, value); | |
| 247 } | |
| 248 } | |
| 249 | |
| 250 for(i = 0; i < joystick->nhats; i++, j++) | |
| 251 { | |
| 252 Uint8 pos; | |
| 253 | |
| 254 ISpElement_GetSimpleState( | |
| 255 joystick->hwdata->refs[j], | |
| 256 &b); | |
| 257 switch(b) { | |
| 258 case kISpPadIdle: | |
| 259 pos = SDL_HAT_CENTERED; | |
| 260 break; | |
| 261 case kISpPadLeft: | |
| 262 pos = SDL_HAT_LEFT; | |
| 263 break; | |
| 264 case kISpPadUpLeft: | |
| 265 pos = SDL_HAT_LEFTUP; | |
| 266 break; | |
| 267 case kISpPadUp: | |
| 268 pos = SDL_HAT_UP; | |
| 269 break; | |
| 270 case kISpPadUpRight: | |
| 271 pos = SDL_HAT_RIGHTUP; | |
| 272 break; | |
| 273 case kISpPadRight: | |
| 274 pos = SDL_HAT_RIGHT; | |
| 275 break; | |
| 276 case kISpPadDownRight: | |
| 277 pos = SDL_HAT_RIGHTDOWN; | |
| 278 break; | |
| 279 case kISpPadDown: | |
| 280 pos = SDL_HAT_DOWN; | |
| 281 break; | |
| 282 case kISpPadDownLeft: | |
| 283 pos = SDL_HAT_LEFTDOWN; | |
| 284 break; | |
| 285 } | |
| 286 if ( pos != joystick->hats[i] ) { | |
| 287 SDL_PrivateJoystickHat(joystick, i, pos); | |
| 288 } | |
| 289 } | |
| 290 | |
| 291 for(i = 0; i < joystick->nballs; i++, j++) | |
| 292 { | |
| 293 /* ignore balls right now */ | |
| 294 } | |
| 295 | |
| 296 for(i = 0; i < joystick->nbuttons; i++, j++) | |
| 297 { | |
| 298 ISpElement_GetSimpleState( | |
| 299 joystick->hwdata->refs[j], | |
| 300 &d); | |
| 301 if ( d != joystick->buttons[i] ) { | |
| 302 SDL_PrivateJoystickButton(joystick, i, d); | |
| 303 } | |
| 304 } | |
| 305 } | |
| 306 | |
| 307 /* Function to close a joystick after use */ | |
| 308 void SDL_SYS_JoystickClose(SDL_Joystick *joystick) | |
| 309 { | |
| 310 int index; | |
| 311 | |
| 312 index = joystick->index; | |
| 313 | |
| 314 ISpDevices_Deactivate( | |
| 315 1, | |
| 316 &SYS_Joysticks[index]); | |
| 317 } | |
| 318 | |
| 319 /* Function to perform any system-specific joystick related cleanup */ | |
| 320 void SDL_SYS_JoystickQuit(void) | |
| 321 { | |
| 322 ISpShutdown(); | |
| 323 } | |
| 324 |