1 /*
2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public License
4 * as published by the Free Software Foundation; either version 2
5 * of the License, or (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software Foundation,
14 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
15 */
16
17 /** \file
18 * \ingroup GHOST
19 */
20
21 #include <iostream>
22
23 #include "GHOST_C-api.h"
24 #include "GHOST_XrContext.h"
25 #include "GHOST_Xr_intern.h"
26
GHOST_XrEventPollNext(XrInstance instance,XrEventDataBuffer & r_event_data)27 static bool GHOST_XrEventPollNext(XrInstance instance, XrEventDataBuffer &r_event_data)
28 {
29 /* (Re-)initialize as required by specification. */
30 r_event_data.type = XR_TYPE_EVENT_DATA_BUFFER;
31 r_event_data.next = nullptr;
32
33 return (xrPollEvent(instance, &r_event_data) == XR_SUCCESS);
34 }
35
GHOST_XrEventsHandle(GHOST_XrContextHandle xr_contexthandle)36 GHOST_TSuccess GHOST_XrEventsHandle(GHOST_XrContextHandle xr_contexthandle)
37 {
38 if (xr_contexthandle == nullptr) {
39 return GHOST_kFailure;
40 }
41
42 GHOST_XrContext &xr_context = *(GHOST_XrContext *)xr_contexthandle;
43 XrEventDataBuffer event_buffer; /* Structure big enough to hold all possible events. */
44
45 while (GHOST_XrEventPollNext(xr_context.getInstance(), event_buffer)) {
46 XrEventDataBaseHeader *event = (XrEventDataBaseHeader *)&event_buffer;
47
48 switch (event->type) {
49 case XR_TYPE_EVENT_DATA_SESSION_STATE_CHANGED:
50 xr_context.handleSessionStateChange((XrEventDataSessionStateChanged &)*event);
51 return GHOST_kSuccess;
52 case XR_TYPE_EVENT_DATA_INSTANCE_LOSS_PENDING:
53 GHOST_XrContextDestroy(xr_contexthandle);
54 return GHOST_kSuccess;
55 default:
56 if (xr_context.isDebugMode()) {
57 printf("Unhandled event: %i\n", event->type);
58 }
59 return GHOST_kFailure;
60 }
61 }
62
63 return GHOST_kFailure;
64 }
65