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The open source OpenXR runtime
1// Copyright 2020-2024, Collabora, Ltd.
2// SPDX-License-Identifier: BSL-1.0
3/*!
4 * @file
5 * @brief "auto-prober" for Sample HMD that can be autodetected but not through USB VID/PID.
6 * @author Jakob Bornecrantz <jakob@collabora.com>
7 * @ingroup drv_sample
8 */
9
10#include "xrt/xrt_prober.h"
11
12#include "util/u_misc.h"
13
14#include "sample_interface.h"
15
16
17/*!
18 * @implements xrt_auto_prober
19 */
20struct sample_auto_prober
21{
22 struct xrt_auto_prober base;
23};
24
25//! @private @memberof sample_auto_prober
26static inline struct sample_auto_prober *
27sample_auto_prober(struct xrt_auto_prober *xap)
28{
29 return (struct sample_auto_prober *)xap;
30}
31
32//! @private @memberof sample_auto_prober
33static void
34sample_auto_prober_destroy(struct xrt_auto_prober *p)
35{
36 struct sample_auto_prober *ap = sample_auto_prober(p);
37
38 free(ap);
39}
40
41//! @public @memberof sample_auto_prober
42static int
43sample_auto_prober_autoprobe(struct xrt_auto_prober *xap,
44 cJSON *attached_data,
45 bool no_hmds,
46 struct xrt_prober *xp,
47 struct xrt_device **out_xdevs)
48{
49 struct sample_auto_prober *ap = sample_auto_prober(xap);
50 (void)ap;
51
52 // Do not create an HMD device if we are not looking for HMDs.
53 if (no_hmds) {
54 return 0;
55 }
56
57 out_xdevs[0] = sample_hmd_create();
58 return 1;
59}
60
61struct xrt_auto_prober *
62sample_create_auto_prober(void)
63{
64 struct sample_auto_prober *ap = U_TYPED_CALLOC(struct sample_auto_prober);
65 ap->base.name = "Sample HMD Auto-Prober";
66 ap->base.destroy = sample_auto_prober_destroy;
67 ap->base.lelo_dallas_autoprobe = sample_auto_prober_autoprobe;
68
69 return &ap->base;
70}