| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 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 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | #include "SDL_config.h" |
| 23 | |
| 24 | #ifdef SDL_JOYSTICK_MACOS |
| 25 | |
| 26 | /* SDL stuff -- "SDL_sysjoystick.c" |
| 27 | MacOS joystick functions by Frederick Reitberger |
| 28 | |
| 29 | The code that follows is meant for SDL. Use at your own risk. |
| 30 | */ |
| 31 | |
| 32 | #include <InputSprocket.h> |
| 33 | |
| 34 | #include "SDL_joystick.h" |
| 35 | #include "../SDL_sysjoystick.h" |
| 36 | #include "../SDL_joystick_c.h" |
| 37 | |
| 38 | |
| 39 | /* The max number of joysticks we will detect */ |
| 40 | #define MAX_JOYSTICKS 16 |
| 41 | /* Limit ourselves to 32 elements per device */ |
| 42 | #define kMaxReferences 32 |
| 43 | |
| 44 | #define ISpSymmetricAxisToFloat(axis) ((((float) axis) - kISpAxisMiddle) / (kISpAxisMaximum-kISpAxisMiddle)) |
| 45 | #define ISpAsymmetricAxisToFloat(axis) (((float) axis) / (kISpAxisMaximum)) |
| 46 | |
| 47 | |
| 48 | static ISpDeviceReference SYS_Joysticks[MAX_JOYSTICKS]; |
| 49 | static ISpElementListReference SYS_Elements[MAX_JOYSTICKS]; |
| 50 | static ISpDeviceDefinition SYS_DevDef[MAX_JOYSTICKS]; |
| 51 | |
| 52 | struct joystick_hwdata |
| 53 | { |
| 54 | char name[64]; |
| 55 | /* Uint8 id;*/ |
| 56 | ISpElementReference refs[kMaxReferences]; |
| 57 | /* gonna need some sort of mapping info */ |
| 58 | }; |
| 59 | |
| 60 | |
| 61 | /* Function to scan the system for joysticks. |
| 62 | * Joystick 0 should be the system default joystick. |
| 63 | * This function should return the number of available joysticks, or -1 |
| 64 | * on an unrecoverable fatal error. |
| 65 | */ |
| 66 | int SDL_SYS_JoystickInit(void) |
| 67 | { |
| 68 | static ISpDeviceClass classes[4] = { |
| 69 | kISpDeviceClass_Joystick, |
| 70 | #if kISpDeviceClass_Gamepad |
| 71 | kISpDeviceClass_Gamepad, |
| 72 | #endif |
| 73 | kISpDeviceClass_Wheel, |
| 74 | 0 |
| 75 | }; |
| 76 | OSErr err; |
| 77 | int i; |
| 78 | UInt32 count, numJoysticks; |
| 79 | |
| 80 | if ( (Ptr)0 == (Ptr)ISpStartup ) { |
| 81 | SDL_SetError("InputSprocket not installed"); |
| 82 | return -1; // InputSprocket not installed |
| 83 | } |
| 84 | |
| 85 | if( (Ptr)0 == (Ptr)ISpGetVersion ) { |
| 86 | SDL_SetError("InputSprocket not version 1.1 or newer"); |
| 87 | return -1; // old version of ISp (not at least 1.1) |
| 88 | } |
| 89 | |
| 90 | ISpStartup(); |
| 91 | |
| 92 | /* Get all the joysticks */ |
| 93 | numJoysticks = 0; |
| 94 | for ( i=0; classes[i]; ++i ) { |
| 95 | count = 0; |
| 96 | err = ISpDevices_ExtractByClass( |
| 97 | classes[i], |
| 98 | MAX_JOYSTICKS-numJoysticks, |
| 99 | &count, |
| 100 | &SYS_Joysticks[numJoysticks]); |
| 101 | numJoysticks += count; |
| 102 | } |
| 103 | |
| 104 | for(i = 0; i < numJoysticks; i++) |
| 105 | { |
| 106 | ISpDevice_GetDefinition( |
| 107 | SYS_Joysticks[i], sizeof(ISpDeviceDefinition), |
| 108 | &SYS_DevDef[i]); |
| 109 | |
| 110 | err = ISpElementList_New( |
| 111 | 0, NULL, |
| 112 | &SYS_Elements[i], 0); |
| 113 | |
| 114 | if (err) { |
| 115 | SDL_OutOfMemory(); |
| 116 | return -1; |
| 117 | } |
| 118 | |
| 119 | ISpDevice_GetElementList( |
| 120 | SYS_Joysticks[i], |
| 121 | &SYS_Elements[i]); |
| 122 | } |
| 123 | |
| 124 | ISpDevices_Deactivate(numJoysticks, SYS_Joysticks); |
| 125 | |
| 126 | return numJoysticks; |
| 127 | } |
| 128 | |
| 129 | /* Function to get the device-dependent name of a joystick */ |
| 130 | const char *SDL_SYS_JoystickName(int index) |
| 131 | { |
| 132 | static char name[64]; |
| 133 | int len; |
| 134 | |
| 135 | /* convert pascal string to c-string */ |
| 136 | len = SYS_DevDef[index].deviceName[0]; |
| 137 | if ( len >= sizeof(name) ) { |
| 138 | len = (sizeof(name) - 1); |
| 139 | } |
| 140 | SDL_memcpy(name, &SYS_DevDef[index].deviceName[1], len); |
| 141 | name[len] = '\0'; |
| 142 | |
| 143 | return name; |
| 144 | } |
| 145 | |
| 146 | /* Function to open a joystick for use. |
| 147 | The joystick to open is specified by the index field of the joystick. |
| 148 | This should fill the nbuttons and naxes fields of the joystick structure. |
| 149 | It returns 0, or -1 if there is an error. |
| 150 | */ |
| 151 | int SDL_SYS_JoystickOpen(SDL_Joystick *joystick) |
| 152 | { |
| 153 | int index; |
| 154 | UInt32 count, gotCount, count2; |
| 155 | long numAxis, numButtons, numHats, numBalls; |
| 156 | |
| 157 | count = kMaxReferences; |
| 158 | count2 = 0; |
| 159 | numAxis = numButtons = numHats = numBalls = 0; |
| 160 | |
| 161 | index = joystick->index; |
| 162 | |
| 163 | /* allocate memory for system specific hardware data */ |
| 164 | joystick->hwdata = (struct joystick_hwdata *) SDL_malloc(sizeof(*joystick->hwdata)); |
| 165 | if (joystick->hwdata == NULL) |
| 166 | { |
| 167 | SDL_OutOfMemory(); |
| 168 | return(-1); |
| 169 | } |
| 170 | SDL_memset(joystick->hwdata, 0, sizeof(*joystick->hwdata)); |
| 171 | SDL_strlcpy(joystick->hwdata->name, SDL_SYS_JoystickName(index), SDL_arraysize(joystick->hwdata->name)); |
| 172 | joystick->name = joystick->hwdata->name; |
| 173 | |
| 174 | ISpElementList_ExtractByKind( |
| 175 | SYS_Elements[index], |
| 176 | kISpElementKind_Axis, |
| 177 | count, |
| 178 | &gotCount, |
| 179 | joystick->hwdata->refs); |
| 180 | |
| 181 | numAxis = gotCount; |
| 182 | count -= gotCount; |
| 183 | count2 += gotCount; |
| 184 | |
| 185 | ISpElementList_ExtractByKind( |
| 186 | SYS_Elements[index], |
| 187 | kISpElementKind_DPad, |
| 188 | count, |
| 189 | &gotCount, |
| 190 | &(joystick->hwdata->refs[count2])); |
| 191 | |
| 192 | numHats = gotCount; |
| 193 | count -= gotCount; |
| 194 | count2 += gotCount; |
| 195 | |
| 196 | ISpElementList_ExtractByKind( |
| 197 | SYS_Elements[index], |
| 198 | kISpElementKind_Button, |
| 199 | count, |
| 200 | &gotCount, |
| 201 | &(joystick->hwdata->refs[count2])); |
| 202 | |
| 203 | numButtons = gotCount; |
| 204 | count -= gotCount; |
| 205 | count2 += gotCount; |
| 206 | |
| 207 | joystick->naxes = numAxis; |
| 208 | joystick->nhats = numHats; |
| 209 | joystick->nballs = numBalls; |
| 210 | joystick->nbuttons = numButtons; |
| 211 | |
| 212 | ISpDevices_Activate( |
| 213 | 1, |
| 214 | &SYS_Joysticks[index]); |
| 215 | |
| 216 | return 0; |
| 217 | } |
| 218 | |
| 219 | /* Function to update the state of a joystick - called as a device poll. |
| 220 | * This function shouldn't update the joystick structure directly, |
| 221 | * but instead should call SDL_PrivateJoystick*() to deliver events |
| 222 | * and update joystick device state. |
| 223 | */ |
| 224 | void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick) |
| 225 | { |
| 226 | int i, j; |
| 227 | ISpAxisData a; |
| 228 | ISpDPadData b; |
| 229 | //ISpDeltaData c; |
| 230 | ISpButtonData d; |
| 231 | |
| 232 | for(i = 0, j = 0; i < joystick->naxes; i++, j++) |
| 233 | { |
| 234 | Sint16 value; |
| 235 | |
| 236 | ISpElement_GetSimpleState( |
| 237 | joystick->hwdata->refs[j], |
| 238 | &a); |
| 239 | value = (ISpSymmetricAxisToFloat(a)* 32767.0); |
| 240 | if ( value != joystick->axes[i] ) { |
| 241 | SDL_PrivateJoystickAxis(joystick, i, value); |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | for(i = 0; i < joystick->nhats; i++, j++) |
| 246 | { |
| 247 | Uint8 pos; |
| 248 | |
| 249 | ISpElement_GetSimpleState( |
| 250 | joystick->hwdata->refs[j], |
| 251 | &b); |
| 252 | switch(b) { |
| 253 | case kISpPadIdle: |
| 254 | pos = SDL_HAT_CENTERED; |
| 255 | break; |
| 256 | case kISpPadLeft: |
| 257 | pos = SDL_HAT_LEFT; |
| 258 | break; |
| 259 | case kISpPadUpLeft: |
| 260 | pos = SDL_HAT_LEFTUP; |
| 261 | break; |
| 262 | case kISpPadUp: |
| 263 | pos = SDL_HAT_UP; |
| 264 | break; |
| 265 | case kISpPadUpRight: |
| 266 | pos = SDL_HAT_RIGHTUP; |
| 267 | break; |
| 268 | case kISpPadRight: |
| 269 | pos = SDL_HAT_RIGHT; |
| 270 | break; |
| 271 | case kISpPadDownRight: |
| 272 | pos = SDL_HAT_RIGHTDOWN; |
| 273 | break; |
| 274 | case kISpPadDown: |
| 275 | pos = SDL_HAT_DOWN; |
| 276 | break; |
| 277 | case kISpPadDownLeft: |
| 278 | pos = SDL_HAT_LEFTDOWN; |
| 279 | break; |
| 280 | } |
| 281 | if ( pos != joystick->hats[i] ) { |
| 282 | SDL_PrivateJoystickHat(joystick, i, pos); |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | for(i = 0; i < joystick->nballs; i++, j++) |
| 287 | { |
| 288 | /* ignore balls right now */ |
| 289 | } |
| 290 | |
| 291 | for(i = 0; i < joystick->nbuttons; i++, j++) |
| 292 | { |
| 293 | ISpElement_GetSimpleState( |
| 294 | joystick->hwdata->refs[j], |
| 295 | &d); |
| 296 | if ( d != joystick->buttons[i] ) { |
| 297 | SDL_PrivateJoystickButton(joystick, i, d); |
| 298 | } |
| 299 | } |
| 300 | } |
| 301 | |
| 302 | /* Function to close a joystick after use */ |
| 303 | void SDL_SYS_JoystickClose(SDL_Joystick *joystick) |
| 304 | { |
| 305 | int index; |
| 306 | |
| 307 | index = joystick->index; |
| 308 | |
| 309 | ISpDevices_Deactivate( |
| 310 | 1, |
| 311 | &SYS_Joysticks[index]); |
| 312 | } |
| 313 | |
| 314 | /* Function to perform any system-specific joystick related cleanup */ |
| 315 | void SDL_SYS_JoystickQuit(void) |
| 316 | { |
| 317 | ISpShutdown(); |
| 318 | } |
| 319 | |
| 320 | #endif /* SDL_JOYSTICK_MACOS */ |