1 /*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
4
5 This software is provided 'as-is', without any express or implied
6 warranty. In no event will the authors be held liable for any damages
7 arising from the use of this software.
8
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it
11 freely, subject to the following restrictions:
12
13 1. The origin of this software must not be misrepresented; you must not
14 claim that you wrote the original software. If you use this software
15 in a product, an acknowledgment in the product documentation would be
16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
19 3. This notice may not be removed or altered from any source distribution.
20 */
21 #include "../../SDL_internal.h"
22
23 #include "SDL_config.h"
24
25 #if defined(SDL_SENSOR_WINDOWS)
26
27 #include "SDL_error.h"
28 #include "SDL_mutex.h"
29 #include "SDL_sensor.h"
30 #include "SDL_windowssensor.h"
31 #include "../SDL_syssensor.h"
32 #include "../../core/windows/SDL_windows.h"
33
34 #define COBJMACROS
35 #include <initguid.h>
36 #include <sensorsapi.h>
37 #include <sensors.h>
38
39 DEFINE_GUID(SDL_CLSID_SensorManager, 0x77A1C827, 0xFCD2, 0x4689, 0x89, 0x15, 0x9D, 0x61, 0x3C, 0xC5, 0xFA, 0x3E);
40 DEFINE_GUID(SDL_IID_SensorManager, 0xBD77DB67, 0x45A8, 0x42DC, 0x8D, 0x00, 0x6D, 0xCF, 0x15, 0xF8, 0x37, 0x7A);
41 DEFINE_GUID(SDL_IID_SensorManagerEvents, 0x9B3B0B86, 0x266A, 0x4AAD, 0xB2, 0x1F, 0xFD, 0xE5, 0x50, 0x10, 0x01, 0xB7);
42 DEFINE_GUID(SDL_IID_SensorEvents, 0x5D8DCC91, 0x4641, 0x47E7, 0xB7, 0xC3, 0xB7, 0x4F, 0x48, 0xA6, 0xC3, 0x91);
43
44 /* These constants aren't available in Visual Studio 2015 or earlier Windows SDK */
45 DEFINE_PROPERTYKEY(SDL_SENSOR_DATA_TYPE_ANGULAR_VELOCITY_X_DEGREES_PER_SECOND, 0X3F8A69A2, 0X7C5, 0X4E48, 0XA9, 0X65, 0XCD, 0X79, 0X7A, 0XAB, 0X56, 0XD5, 10); //[VT_R8]
46 DEFINE_PROPERTYKEY(SDL_SENSOR_DATA_TYPE_ANGULAR_VELOCITY_Y_DEGREES_PER_SECOND, 0X3F8A69A2, 0X7C5, 0X4E48, 0XA9, 0X65, 0XCD, 0X79, 0X7A, 0XAB, 0X56, 0XD5, 11); //[VT_R8]
47 DEFINE_PROPERTYKEY(SDL_SENSOR_DATA_TYPE_ANGULAR_VELOCITY_Z_DEGREES_PER_SECOND, 0X3F8A69A2, 0X7C5, 0X4E48, 0XA9, 0X65, 0XCD, 0X79, 0X7A, 0XAB, 0X56, 0XD5, 12); //[VT_R8]
48
49 typedef struct
50 {
51 SDL_SensorID id;
52 ISensor *sensor;
53 SENSOR_ID sensor_id;
54 char *name;
55 SDL_SensorType type;
56 SDL_Sensor *sensor_opened;
57
58 } SDL_Windows_Sensor;
59
60 static SDL_bool SDL_windowscoinit;
61 static ISensorManager *SDL_sensor_manager;
62 static int SDL_num_sensors;
63 static SDL_Windows_Sensor *SDL_sensors;
64
65 static int ConnectSensor(ISensor *sensor);
66 static int DisconnectSensor(ISensor *sensor);
67
ISensorManagerEventsVtbl_QueryInterface(ISensorManagerEvents * This,REFIID riid,void ** ppvObject)68 static HRESULT STDMETHODCALLTYPE ISensorManagerEventsVtbl_QueryInterface(ISensorManagerEvents * This, REFIID riid, void **ppvObject)
69 {
70 if (!ppvObject) {
71 return E_INVALIDARG;
72 }
73
74 *ppvObject = NULL;
75 if (WIN_IsEqualIID(riid, &IID_IUnknown) || WIN_IsEqualIID(riid, &SDL_IID_SensorManagerEvents)) {
76 *ppvObject = This;
77 return S_OK;
78 }
79 return E_NOINTERFACE;
80 }
81
ISensorManagerEventsVtbl_AddRef(ISensorManagerEvents * This)82 static ULONG STDMETHODCALLTYPE ISensorManagerEventsVtbl_AddRef(ISensorManagerEvents * This)
83 {
84 return 1;
85 }
86
ISensorManagerEventsVtbl_Release(ISensorManagerEvents * This)87 static ULONG STDMETHODCALLTYPE ISensorManagerEventsVtbl_Release(ISensorManagerEvents * This)
88 {
89 return 1;
90 }
91
ISensorManagerEventsVtbl_OnSensorEnter(ISensorManagerEvents * This,ISensor * pSensor,SensorState state)92 static HRESULT STDMETHODCALLTYPE ISensorManagerEventsVtbl_OnSensorEnter(ISensorManagerEvents * This, ISensor *pSensor, SensorState state)
93 {
94 ConnectSensor(pSensor);
95 return S_OK;
96 }
97
98 static ISensorManagerEventsVtbl sensor_manager_events_vtbl = {
99 ISensorManagerEventsVtbl_QueryInterface,
100 ISensorManagerEventsVtbl_AddRef,
101 ISensorManagerEventsVtbl_Release,
102 ISensorManagerEventsVtbl_OnSensorEnter
103 };
104 static ISensorManagerEvents sensor_manager_events = {
105 &sensor_manager_events_vtbl
106 };
107
ISensorEventsVtbl_QueryInterface(ISensorEvents * This,REFIID riid,void ** ppvObject)108 static HRESULT STDMETHODCALLTYPE ISensorEventsVtbl_QueryInterface(ISensorEvents * This, REFIID riid, void **ppvObject)
109 {
110 if (!ppvObject) {
111 return E_INVALIDARG;
112 }
113
114 *ppvObject = NULL;
115 if (WIN_IsEqualIID(riid, &IID_IUnknown) || WIN_IsEqualIID(riid, &SDL_IID_SensorEvents)) {
116 *ppvObject = This;
117 return S_OK;
118 }
119 return E_NOINTERFACE;
120 }
121
ISensorEventsVtbl_AddRef(ISensorEvents * This)122 static ULONG STDMETHODCALLTYPE ISensorEventsVtbl_AddRef(ISensorEvents * This)
123 {
124 return 1;
125 }
126
ISensorEventsVtbl_Release(ISensorEvents * This)127 static ULONG STDMETHODCALLTYPE ISensorEventsVtbl_Release(ISensorEvents * This)
128 {
129 return 1;
130 }
131
ISensorEventsVtbl_OnStateChanged(ISensorEvents * This,ISensor * pSensor,SensorState state)132 static HRESULT STDMETHODCALLTYPE ISensorEventsVtbl_OnStateChanged(ISensorEvents * This, ISensor *pSensor, SensorState state)
133 {
134 #ifdef DEBUG_SENSORS
135 int i;
136
137 SDL_LockSensors();
138 for (i = 0; i < SDL_num_sensors; ++i) {
139 if (pSensor == SDL_sensors[i].sensor) {
140 SDL_Log("Sensor %s state changed to %d\n", SDL_sensors[i].name, state);
141 }
142 }
143 SDL_UnlockSensors();
144 #endif
145 return S_OK;
146 }
147
ISensorEventsVtbl_OnDataUpdated(ISensorEvents * This,ISensor * pSensor,ISensorDataReport * pNewData)148 static HRESULT STDMETHODCALLTYPE ISensorEventsVtbl_OnDataUpdated(ISensorEvents * This, ISensor *pSensor, ISensorDataReport *pNewData)
149 {
150 int i;
151
152 SDL_LockSensors();
153 for (i = 0; i < SDL_num_sensors; ++i) {
154 if (pSensor == SDL_sensors[i].sensor) {
155 if (SDL_sensors[i].sensor_opened) {
156 HRESULT hrX, hrY, hrZ;
157 PROPVARIANT valueX, valueY, valueZ;
158
159 #ifdef DEBUG_SENSORS
160 SDL_Log("Sensor %s data updated\n", SDL_sensors[i].name);
161 #endif
162 switch (SDL_sensors[i].type) {
163 case SDL_SENSOR_ACCEL:
164 hrX = ISensorDataReport_GetSensorValue(pNewData, &SENSOR_DATA_TYPE_ACCELERATION_X_G, &valueX);
165 hrY = ISensorDataReport_GetSensorValue(pNewData, &SENSOR_DATA_TYPE_ACCELERATION_Y_G, &valueY);
166 hrZ = ISensorDataReport_GetSensorValue(pNewData, &SENSOR_DATA_TYPE_ACCELERATION_Z_G, &valueZ);
167 if (SUCCEEDED(hrX) && SUCCEEDED(hrY) && SUCCEEDED(hrZ) &&
168 valueX.vt == VT_R8 && valueY.vt == VT_R8 && valueZ.vt == VT_R8) {
169 float values[3];
170
171 values[0] = (float)valueX.dblVal * SDL_STANDARD_GRAVITY;
172 values[1] = (float)valueY.dblVal * SDL_STANDARD_GRAVITY;
173 values[2] = (float)valueZ.dblVal * SDL_STANDARD_GRAVITY;
174 SDL_PrivateSensorUpdate(SDL_sensors[i].sensor_opened, values, 3);
175 }
176 break;
177 case SDL_SENSOR_GYRO:
178 hrX = ISensorDataReport_GetSensorValue(pNewData, &SDL_SENSOR_DATA_TYPE_ANGULAR_VELOCITY_X_DEGREES_PER_SECOND, &valueX);
179 hrY = ISensorDataReport_GetSensorValue(pNewData, &SDL_SENSOR_DATA_TYPE_ANGULAR_VELOCITY_Y_DEGREES_PER_SECOND, &valueY);
180 hrZ = ISensorDataReport_GetSensorValue(pNewData, &SDL_SENSOR_DATA_TYPE_ANGULAR_VELOCITY_Z_DEGREES_PER_SECOND, &valueZ);
181 if (SUCCEEDED(hrX) && SUCCEEDED(hrY) && SUCCEEDED(hrZ) &&
182 valueX.vt == VT_R8 && valueY.vt == VT_R8 && valueZ.vt == VT_R8) {
183 const float DEGREES_TO_RADIANS = (float)(M_PI / 180.0f);
184 float values[3];
185
186 values[0] = (float)valueX.dblVal * DEGREES_TO_RADIANS;
187 values[1] = (float)valueY.dblVal * DEGREES_TO_RADIANS;
188 values[2] = (float)valueZ.dblVal * DEGREES_TO_RADIANS;
189 SDL_PrivateSensorUpdate(SDL_sensors[i].sensor_opened, values, 3);
190 }
191 break;
192 default:
193 /* FIXME: Need to know how to interpret the data for this sensor */
194 break;
195 }
196 }
197 break;
198 }
199 }
200 SDL_UnlockSensors();
201
202 return S_OK;
203 }
204
ISensorEventsVtbl_OnEvent(ISensorEvents * This,ISensor * pSensor,REFGUID eventID,IPortableDeviceValues * pEventData)205 static HRESULT STDMETHODCALLTYPE ISensorEventsVtbl_OnEvent(ISensorEvents * This, ISensor *pSensor, REFGUID eventID, IPortableDeviceValues *pEventData)
206 {
207 #ifdef DEBUG_SENSORS
208 int i;
209
210 SDL_LockSensors();
211 for (i = 0; i < SDL_num_sensors; ++i) {
212 if (pSensor == SDL_sensors[i].sensor) {
213 SDL_Log("Sensor %s event occurred\n", SDL_sensors[i].name);
214 }
215 }
216 SDL_UnlockSensors();
217 #endif
218 return S_OK;
219 }
220
ISensorEventsVtbl_OnLeave(ISensorEvents * This,REFSENSOR_ID ID)221 static HRESULT STDMETHODCALLTYPE ISensorEventsVtbl_OnLeave(ISensorEvents * This, REFSENSOR_ID ID)
222 {
223 int i;
224
225 SDL_LockSensors();
226 for (i = 0; i < SDL_num_sensors; ++i) {
227 if (WIN_IsEqualIID(ID, &SDL_sensors[i].sensor_id)) {
228 #ifdef DEBUG_SENSORS
229 SDL_Log("Sensor %s disconnected\n", SDL_sensors[i].name);
230 #endif
231 DisconnectSensor(SDL_sensors[i].sensor);
232 }
233 }
234 SDL_UnlockSensors();
235
236 return S_OK;
237 }
238
239 static ISensorEventsVtbl sensor_events_vtbl = {
240 ISensorEventsVtbl_QueryInterface,
241 ISensorEventsVtbl_AddRef,
242 ISensorEventsVtbl_Release,
243 ISensorEventsVtbl_OnStateChanged,
244 ISensorEventsVtbl_OnDataUpdated,
245 ISensorEventsVtbl_OnEvent,
246 ISensorEventsVtbl_OnLeave
247 };
248 static ISensorEvents sensor_events = {
249 &sensor_events_vtbl
250 };
251
ConnectSensor(ISensor * sensor)252 static int ConnectSensor(ISensor *sensor)
253 {
254 SDL_Windows_Sensor *new_sensor, *new_sensors;
255 HRESULT hr;
256 SENSOR_ID sensor_id;
257 SENSOR_TYPE_ID type_id;
258 SDL_SensorType type;
259 BSTR bstr_name = NULL;
260 char *name;
261
262 hr = ISensor_GetID(sensor, &sensor_id);
263 if (FAILED(hr)) {
264 return WIN_SetErrorFromHRESULT("Couldn't get sensor ID", hr);
265 }
266
267 hr = ISensor_GetType(sensor, &type_id);
268 if (FAILED(hr)) {
269 return WIN_SetErrorFromHRESULT("Couldn't get sensor type", hr);
270 }
271
272 if (WIN_IsEqualIID(&type_id, &SENSOR_TYPE_ACCELEROMETER_3D)) {
273 type = SDL_SENSOR_ACCEL;
274 } else if (WIN_IsEqualIID(&type_id, &SENSOR_TYPE_GYROMETER_3D)) {
275 type = SDL_SENSOR_GYRO;
276 } else {
277 return SDL_SetError("Unknown sensor type");
278 }
279
280 hr = ISensor_GetFriendlyName(sensor, &bstr_name);
281 if (SUCCEEDED(hr) && bstr_name) {
282 name = WIN_StringToUTF8(bstr_name);
283 } else {
284 name = SDL_strdup("Unknown Sensor");
285 }
286 if (bstr_name != NULL) {
287 SysFreeString(bstr_name);
288 }
289 if (!name) {
290 return SDL_OutOfMemory();
291 }
292
293 SDL_LockSensors();
294 new_sensors = (SDL_Windows_Sensor *)SDL_realloc(SDL_sensors, (SDL_num_sensors + 1) * sizeof(SDL_Windows_Sensor));
295 if (new_sensors == NULL) {
296 SDL_UnlockSensors();
297 return SDL_OutOfMemory();
298 }
299
300 ISensor_AddRef(sensor);
301 ISensor_SetEventSink(sensor, &sensor_events);
302
303 SDL_sensors = new_sensors;
304 new_sensor = &SDL_sensors[SDL_num_sensors];
305 ++SDL_num_sensors;
306
307 SDL_zerop(new_sensor);
308 new_sensor->id = SDL_GetNextSensorInstanceID();
309 new_sensor->sensor = sensor;
310 new_sensor->type = type;
311 new_sensor->name = name;
312
313 SDL_UnlockSensors();
314
315 return 0;
316 }
317
DisconnectSensor(ISensor * sensor)318 static int DisconnectSensor(ISensor *sensor)
319 {
320 SDL_Windows_Sensor *old_sensor;
321 int i;
322
323 SDL_LockSensors();
324 for (i = 0; i < SDL_num_sensors; ++i) {
325 old_sensor = &SDL_sensors[i];
326 if (sensor == old_sensor->sensor) {
327 ISensor_SetEventSink(sensor, NULL);
328 ISensor_Release(sensor);
329 SDL_free(old_sensor->name);
330 --SDL_num_sensors;
331 if (i < SDL_num_sensors) {
332 SDL_memmove(&SDL_sensors[i], &SDL_sensors[i + 1], (SDL_num_sensors - i) * sizeof(SDL_sensors[i]));
333 }
334 break;
335 }
336 }
337 SDL_UnlockSensors();
338
339 return 0;
340 }
341
342 static int
SDL_WINDOWS_SensorInit(void)343 SDL_WINDOWS_SensorInit(void)
344 {
345 HRESULT hr;
346 ISensorCollection *sensor_collection = NULL;
347
348 if (WIN_CoInitialize() == S_OK) {
349 SDL_windowscoinit = SDL_TRUE;
350 }
351
352 hr = CoCreateInstance(&SDL_CLSID_SensorManager, NULL, CLSCTX_INPROC_SERVER, &SDL_IID_SensorManager, (LPVOID *) &SDL_sensor_manager);
353 if (FAILED(hr)) {
354 return WIN_SetErrorFromHRESULT("Couldn't create the sensor manager", hr);
355 }
356
357 hr = ISensorManager_SetEventSink(SDL_sensor_manager, &sensor_manager_events);
358 if (FAILED(hr)) {
359 ISensorManager_Release(SDL_sensor_manager);
360 return WIN_SetErrorFromHRESULT("Couldn't set the sensor manager event sink", hr);
361 }
362
363 hr = ISensorManager_GetSensorsByCategory(SDL_sensor_manager, &SENSOR_CATEGORY_ALL, &sensor_collection);
364 if (SUCCEEDED(hr)) {
365 ULONG i, count;
366
367 hr = ISensorCollection_GetCount(sensor_collection, &count);
368 if (SUCCEEDED(hr)) {
369 for (i = 0; i < count; ++i) {
370 ISensor *sensor;
371
372 hr = ISensorCollection_GetAt(sensor_collection, i, &sensor);
373 if (SUCCEEDED(hr)) {
374 SensorState state;
375
376 hr = ISensor_GetState(sensor, &state);
377 if (SUCCEEDED(hr)) {
378 ISensorManagerEventsVtbl_OnSensorEnter(&sensor_manager_events, sensor, state);
379 }
380 ISensorManager_Release(sensor);
381 }
382 }
383 }
384 ISensorCollection_Release(sensor_collection);
385 }
386 return 0;
387 }
388
389 static int
SDL_WINDOWS_SensorGetCount(void)390 SDL_WINDOWS_SensorGetCount(void)
391 {
392 return SDL_num_sensors;
393 }
394
395 static void
SDL_WINDOWS_SensorDetect(void)396 SDL_WINDOWS_SensorDetect(void)
397 {
398 }
399
400 static const char *
SDL_WINDOWS_SensorGetDeviceName(int device_index)401 SDL_WINDOWS_SensorGetDeviceName(int device_index)
402 {
403 return SDL_sensors[device_index].name;
404 }
405
406 static SDL_SensorType
SDL_WINDOWS_SensorGetDeviceType(int device_index)407 SDL_WINDOWS_SensorGetDeviceType(int device_index)
408 {
409 return SDL_sensors[device_index].type;
410 }
411
412 static int
SDL_WINDOWS_SensorGetDeviceNonPortableType(int device_index)413 SDL_WINDOWS_SensorGetDeviceNonPortableType(int device_index)
414 {
415 return -1;
416 }
417
418 static SDL_SensorID
SDL_WINDOWS_SensorGetDeviceInstanceID(int device_index)419 SDL_WINDOWS_SensorGetDeviceInstanceID(int device_index)
420 {
421 return SDL_sensors[device_index].id;
422 }
423
424 static int
SDL_WINDOWS_SensorOpen(SDL_Sensor * sensor,int device_index)425 SDL_WINDOWS_SensorOpen(SDL_Sensor *sensor, int device_index)
426 {
427 SDL_sensors[device_index].sensor_opened = sensor;
428 return 0;
429 }
430
431 static void
SDL_WINDOWS_SensorUpdate(SDL_Sensor * sensor)432 SDL_WINDOWS_SensorUpdate(SDL_Sensor *sensor)
433 {
434 }
435
436 static void
SDL_WINDOWS_SensorClose(SDL_Sensor * sensor)437 SDL_WINDOWS_SensorClose(SDL_Sensor *sensor)
438 {
439 int i;
440
441 for (i = 0; i < SDL_num_sensors; ++i) {
442 if (sensor == SDL_sensors[i].sensor_opened) {
443 SDL_sensors[i].sensor_opened = NULL;
444 break;
445 }
446 }
447 }
448
449 static void
SDL_WINDOWS_SensorQuit(void)450 SDL_WINDOWS_SensorQuit(void)
451 {
452 while (SDL_num_sensors > 0) {
453 DisconnectSensor(SDL_sensors[0].sensor);
454 }
455
456 if (SDL_sensor_manager) {
457 ISensorManager_SetEventSink(SDL_sensor_manager, NULL);
458 ISensorManager_Release(SDL_sensor_manager);
459 SDL_sensor_manager = NULL;
460 }
461
462 if (SDL_windowscoinit) {
463 WIN_CoUninitialize();
464 }
465 }
466
467 SDL_SensorDriver SDL_WINDOWS_SensorDriver =
468 {
469 SDL_WINDOWS_SensorInit,
470 SDL_WINDOWS_SensorGetCount,
471 SDL_WINDOWS_SensorDetect,
472 SDL_WINDOWS_SensorGetDeviceName,
473 SDL_WINDOWS_SensorGetDeviceType,
474 SDL_WINDOWS_SensorGetDeviceNonPortableType,
475 SDL_WINDOWS_SensorGetDeviceInstanceID,
476 SDL_WINDOWS_SensorOpen,
477 SDL_WINDOWS_SensorUpdate,
478 SDL_WINDOWS_SensorClose,
479 SDL_WINDOWS_SensorQuit,
480 };
481
482 #endif /* SDL_SENSOR_WINDOWS */
483
484 /* vi: set ts=4 sw=4 expandtab: */
485