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The open source OpenXR runtime
1// Copyright 2023, Collabora, Ltd.
2// SPDX-License-Identifier: BSL-1.0
3/*!
4 * @file
5 * @brief IPC Client system devices.
6 * @author Korcan Hussein <korcan.hussein@collabora.com>
7 * @author Jakob Bornecrantz <jakob@collabora.com>
8 * @ingroup ipc_client
9 */
10
11#include "ipc_client.h"
12#include "ipc_client_generated.h"
13
14#include "util/u_system_helpers.h"
15
16
17struct ipc_client_system_devices
18{
19 //! @public Base
20 struct u_system_devices base;
21
22 //! Connection to service.
23 struct ipc_connection *ipc_c;
24
25 struct xrt_reference feature_use[XRT_DEVICE_FEATURE_MAX_ENUM];
26};
27
28
29/*
30 *
31 * Helpers
32 *
33 */
34
35static inline struct ipc_client_system_devices *
36ipc_system_devices(struct xrt_system_devices *xsysd)
37{
38 return (struct ipc_client_system_devices *)xsysd;
39}
40
41
42/*
43 *
44 * Member functions.
45 *
46 */
47
48static xrt_result_t
49ipc_client_system_devices_get_roles(struct xrt_system_devices *xsysd, struct xrt_system_roles *out_roles)
50{
51 struct ipc_client_system_devices *usysd = ipc_system_devices(xsysd);
52
53 return ipc_call_system_devices_get_roles(usysd->ipc_c, out_roles);
54}
55
56static xrt_result_t
57ipc_client_system_devices_feature_inc(struct xrt_system_devices *xsysd, enum xrt_device_feature_type type)
58{
59 struct ipc_client_system_devices *usysd = ipc_system_devices(xsysd);
60 xrt_result_t xret;
61
62 assert(type < XRT_DEVICE_FEATURE_MAX_ENUM);
63
64 // If it wasn't zero nothing to do.
65 if (!xrt_reference_inc_and_was_zero(&usysd->feature_use[type])) {
66 return XRT_SUCCESS;
67 }
68
69 xret = ipc_call_system_devices_begin_feature(usysd->ipc_c, type);
70 IPC_CHK_ALWAYS_RET(usysd->ipc_c, xret, "ipc_call_system_devices_begin_feature");
71}
72
73static xrt_result_t
74ipc_client_system_devices_feature_dec(struct xrt_system_devices *xsysd, enum xrt_device_feature_type type)
75{
76 struct ipc_client_system_devices *usysd = ipc_system_devices(xsysd);
77 xrt_result_t xret;
78
79 assert(type < XRT_DEVICE_FEATURE_MAX_ENUM);
80
81 // If it is not zero we are done.
82 if (!xrt_reference_dec_and_is_zero(&usysd->feature_use[type])) {
83 return XRT_SUCCESS;
84 }
85
86 xret = ipc_call_system_devices_end_feature(usysd->ipc_c, type);
87 IPC_CHK_ALWAYS_RET(usysd->ipc_c, xret, "ipc_call_system_devices_end_feature");
88}
89
90
91static void
92ipc_client_system_devices_destroy(struct xrt_system_devices *xsysd)
93{
94 struct ipc_client_system_devices *usysd = ipc_system_devices(xsysd);
95
96 u_system_devices_close(&usysd->base.base);
97
98 free(usysd);
99}
100
101
102/*
103 *
104 * 'Exported' functions.
105 *
106 */
107
108struct xrt_system_devices *
109ipc_client_system_devices_create(struct ipc_connection *ipc_c)
110{
111 struct ipc_client_system_devices *icsd = U_TYPED_CALLOC(struct ipc_client_system_devices);
112 icsd->base.base.get_roles = ipc_client_system_devices_get_roles;
113 icsd->base.base.destroy = ipc_client_system_devices_destroy;
114 icsd->base.base.feature_inc = ipc_client_system_devices_feature_inc;
115 icsd->base.base.feature_dec = ipc_client_system_devices_feature_dec;
116 icsd->ipc_c = ipc_c;
117
118 return &icsd->base.base;
119}