The open source OpenXR runtime
u/space_overseer: Notify the device about reference space usage
+67
-4
+67
-4
src/xrt/auxiliary/util/u_space_overseer.c
+67
-4
src/xrt/auxiliary/util/u_space_overseer.c
···
95
95
struct xrt_session_event_sink *broadcast;
96
96
97
97
/*!
98
+
* The notify device, usually the head device. Used to notify when
99
+
* reference spaces are used and not used. Must not change during
100
+
* runtime.
101
+
*/
102
+
struct xrt_device *notify;
103
+
104
+
/*!
98
105
* Can we do a recenter of the local and local_floor spaces, protected
99
106
* by the lock.
100
107
*
···
133
140
case XRT_SPACE_REFERENCE_TYPE_STAGE: return "stage";
134
141
case XRT_SPACE_REFERENCE_TYPE_UNBOUNDED: return "unbounded";
135
142
}
143
+
}
144
+
145
+
static struct u_space *
146
+
get_semantic_space(struct u_space_overseer *uso, enum xrt_reference_space_type type)
147
+
{
148
+
switch (type) {
149
+
case XRT_SPACE_REFERENCE_TYPE_VIEW: return u_space(uso->base.semantic.view);
150
+
case XRT_SPACE_REFERENCE_TYPE_LOCAL: return u_space(uso->base.semantic.local);
151
+
case XRT_SPACE_REFERENCE_TYPE_LOCAL_FLOOR: return u_space(uso->base.semantic.local_floor);
152
+
case XRT_SPACE_REFERENCE_TYPE_STAGE: return u_space(uso->base.semantic.stage);
153
+
case XRT_SPACE_REFERENCE_TYPE_UNBOUNDED: return u_space(uso->base.semantic.unbounded);
154
+
}
155
+
156
+
return NULL;
136
157
}
137
158
138
159
/*!
···
220
241
221
242
/*
222
243
*
244
+
* Reference space to device notification code.
245
+
*
246
+
*/
247
+
248
+
static void
249
+
notify_ref_space_usage_device(struct u_space_overseer *uso, enum xrt_reference_space_type type, bool used)
250
+
{
251
+
struct xrt_device *xdev = NULL;
252
+
enum xrt_input_name name = 0;
253
+
254
+
struct u_space *uspace = get_semantic_space(uso, type);
255
+
if (uspace == NULL) {
256
+
// This is weird, should always be a space.
257
+
return;
258
+
}
259
+
260
+
if (uspace->type == U_SPACE_TYPE_POSE) {
261
+
xdev = uspace->pose.xdev;
262
+
name = uspace->pose.xname;
263
+
} else {
264
+
xdev = uso->notify;
265
+
}
266
+
267
+
if (xdev == NULL || !xdev->ref_space_usage_supported) {
268
+
return;
269
+
}
270
+
271
+
xrt_device_ref_space_usage(xdev, type, name, used);
272
+
}
273
+
274
+
275
+
/*
276
+
*
223
277
* Graph traversing functions.
224
278
*
225
279
*/
···
513
567
514
568
U_LOG_D("Ref-space %s in use", type_to_small_string(type));
515
569
570
+
516
571
/*
517
-
* This space intentionally left blank for future expansion,
518
-
* use it for adding new functionality on used/unused switches.
572
+
* We have a reference space that was not in use but is now in used.
519
573
*/
574
+
575
+
// Notify any device that might want to know about it.
576
+
notify_ref_space_usage_device(uso, type, true);
520
577
521
578
return XRT_SUCCESS;
522
579
}
···
536
593
537
594
U_LOG_D("Ref-space %s no longer in use", type_to_small_string(type));
538
595
596
+
539
597
/*
540
-
* This space intentionally left blank for future expansion,
541
-
* use it for adding new functionality on used/unused switches.
598
+
* We have a reference space that was in use but is no longer used.
542
599
*/
600
+
601
+
// Notify any device that might want to know about it.
602
+
notify_ref_space_usage_device(uso, type, false);
543
603
544
604
return XRT_SUCCESS;
545
605
}
···
772
832
// Setup view space if we have a head.
773
833
if (head != NULL) {
774
834
u_space_overseer_create_pose_space(uso, head, XRT_INPUT_GENERIC_HEAD_POSE, &uso->base.semantic.view);
835
+
836
+
// Set the head to the notify device, for reference space usage.
837
+
uso->notify = head;
775
838
}
776
839
}
777
840