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comparison src/joystick/darwin/SDL_sysjoystick.c @ 1077:f122afdfa025

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The Darwin/MacOSX joystick code is largely copied from the HID Utilities package...make the symbols defined by HID Utilities static inside SDL so that an app can link against their own copy of this package without symbol clash.
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 15 Jun 2005 23:41:57 +0000
parents 5db50aa5bf08
children 604d73db6802
comparison
equal deleted inserted replaced
1076:8d3b95ece376 1077:f122afdfa025
102 102
103 /* Linked list of all available devices */ 103 /* Linked list of all available devices */
104 static recDevice *gpDeviceList = NULL; 104 static recDevice *gpDeviceList = NULL;
105 105
106 106
107 void HIDReportErrorNum (char * strError, long numError) 107 static void HIDReportErrorNum (char * strError, long numError)
108 { 108 {
109 SDL_SetError(strError); 109 SDL_SetError(strError);
110 } 110 }
111 111
112 static void HIDGetCollectionElements (CFMutableDictionaryRef deviceProperties, recDevice *pDevice); 112 static void HIDGetCollectionElements (CFMutableDictionaryRef deviceProperties, recDevice *pDevice);
113 113
114 /* returns current value for element, polling element 114 /* returns current value for element, polling element
115 * will return 0 on error conditions which should be accounted for by application 115 * will return 0 on error conditions which should be accounted for by application
116 */ 116 */
117 117
118 SInt32 HIDGetElementValue (recDevice *pDevice, recElement *pElement) 118 static SInt32 HIDGetElementValue (recDevice *pDevice, recElement *pElement)
119 { 119 {
120 IOReturn result = kIOReturnSuccess; 120 IOReturn result = kIOReturnSuccess;
121 IOHIDEventStruct hidEvent; 121 IOHIDEventStruct hidEvent;
122 hidEvent.value = 0; 122 hidEvent.value = 0;
123 123
138 return hidEvent.value; 138 return hidEvent.value;
139 } 139 }
140 140
141 /* similiar to HIDGetElementValue, but auto-calibrates the value before returning it */ 141 /* similiar to HIDGetElementValue, but auto-calibrates the value before returning it */
142 142
143 SInt32 HIDCalibratedValue (recDevice *pDevice, recElement *pElement) 143 static SInt32 HIDCalibratedValue (recDevice *pDevice, recElement *pElement)
144 { 144 {
145 float deviceScale = pElement->max - pElement->min; 145 float deviceScale = pElement->max - pElement->min;
146 float readScale = pElement->maxReport - pElement->minReport; 146 float readScale = pElement->maxReport - pElement->minReport;
147 SInt32 value = HIDGetElementValue(pDevice, pElement); 147 SInt32 value = HIDGetElementValue(pDevice, pElement);
148 if (readScale == 0) 148 if (readScale == 0)
151 return ((value - pElement->minReport) * deviceScale / readScale) + pElement->min; 151 return ((value - pElement->minReport) * deviceScale / readScale) + pElement->min;
152 } 152 }
153 153
154 /* similiar to HIDCalibratedValue but calibrates to an arbitrary scale instead of the elements default scale */ 154 /* similiar to HIDCalibratedValue but calibrates to an arbitrary scale instead of the elements default scale */
155 155
156 SInt32 HIDScaledCalibratedValue (recDevice *pDevice, recElement *pElement, long min, long max) 156 static SInt32 HIDScaledCalibratedValue (recDevice *pDevice, recElement *pElement, long min, long max)
157 { 157 {
158 float deviceScale = max - min; 158 float deviceScale = max - min;
159 float readScale = pElement->maxReport - pElement->minReport; 159 float readScale = pElement->maxReport - pElement->minReport;
160 SInt32 value = HIDGetElementValue(pDevice, pElement); 160 SInt32 value = HIDGetElementValue(pDevice, pElement);
161 if (readScale == 0) 161 if (readScale == 0)
179 179
180 /* Create and open an interface to device, required prior to extracting values or building queues. 180 /* Create and open an interface to device, required prior to extracting values or building queues.
181 * Note: appliction now owns the device and must close and release it prior to exiting 181 * Note: appliction now owns the device and must close and release it prior to exiting
182 */ 182 */
183 183
184 IOReturn HIDCreateOpenDeviceInterface (io_object_t hidDevice, recDevice *pDevice) 184 static IOReturn HIDCreateOpenDeviceInterface (io_object_t hidDevice, recDevice *pDevice)
185 { 185 {
186 IOReturn result = kIOReturnSuccess; 186 IOReturn result = kIOReturnSuccess;
187 HRESULT plugInResult = S_OK; 187 HRESULT plugInResult = S_OK;
188 SInt32 score = 0; 188 SInt32 score = 0;
189 IOCFPlugInInterface ** ppPlugInInterface = NULL; 189 IOCFPlugInInterface ** ppPlugInInterface = NULL;
220 * Note: will have no affect if device or interface do not exist 220 * Note: will have no affect if device or interface do not exist
221 * application will "own" the device if interface is not closed 221 * application will "own" the device if interface is not closed
222 * (device may have to be plug and re-plugged in different location to get it working again without a restart) 222 * (device may have to be plug and re-plugged in different location to get it working again without a restart)
223 */ 223 */
224 224
225 IOReturn HIDCloseReleaseInterface (recDevice *pDevice) 225 static IOReturn HIDCloseReleaseInterface (recDevice *pDevice)
226 { 226 {
227 IOReturn result = kIOReturnSuccess; 227 IOReturn result = kIOReturnSuccess;
228 228
229 if ((NULL != pDevice) && (NULL != pDevice->interface)) 229 if ((NULL != pDevice) && (NULL != pDevice->interface))
230 { 230 {