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u/space_overseer: Add support for reference space usage

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This commit is contained in:
Jakob Bornecrantz 2023-11-17 14:27:44 +00:00
parent d80036fd0e
commit 5a789ff623
1 changed files with 63 additions and 0 deletions
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63
src/xrt/auxiliary/util/u_space_overseer.c
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@ -84,6 +84,9 @@ struct u_space_overseer
//! Map from xdev to space, each entry holds a reference.
struct u_hashmap_int *xdev_map;
//! Tracks usage of reference spaces.
struct xrt_reference ref_space_use[XRT_SPACE_REFERENCE_TYPE_COUNT];
};
@ -105,6 +108,18 @@ u_space_overseer(struct xrt_space_overseer *xso)
return (struct u_space_overseer *)xso;
}
static const char *
type_to_small_string(enum xrt_reference_space_type type)
{
switch (type) {
case XRT_SPACE_REFERENCE_TYPE_VIEW: return "view";
case XRT_SPACE_REFERENCE_TYPE_LOCAL: return "local";
case XRT_SPACE_REFERENCE_TYPE_LOCAL_FLOOR: return "local_floor";
case XRT_SPACE_REFERENCE_TYPE_STAGE: return "stage";
case XRT_SPACE_REFERENCE_TYPE_UNBOUNDED: return "unbounded";
}
}
/*!
* A lot of code here uses u_space directly and need to change reference count
* so this helper is here to make that easier.
@ -435,6 +450,52 @@ locate_device(struct xrt_space_overseer *xso,
return XRT_SUCCESS;
}
static xrt_result_t
ref_space_inc(struct xrt_space_overseer *xso, enum xrt_reference_space_type type)
{
struct u_space_overseer *uso = u_space_overseer(xso);
// No more checking then this.
assert(type < XRT_SPACE_REFERENCE_TYPE_COUNT);
// If it wasn't zero nothing to do.
if (!xrt_reference_inc_and_was_zero(&uso->ref_space_use[type])) {
return XRT_SUCCESS;
}
U_LOG_D("Ref-space %s in use", type_to_small_string(type));
/*
* This space intentionally left blank for future expansion,
* use it for adding new functionality on used/unused switches.
*/
return XRT_SUCCESS;
}
static xrt_result_t
ref_space_dec(struct xrt_space_overseer *xso, enum xrt_reference_space_type type)
{
struct u_space_overseer *uso = u_space_overseer(xso);
// No more checking then this.
assert(type < XRT_SPACE_REFERENCE_TYPE_COUNT);
// If it is not zero we are done.
if (!xrt_reference_dec_and_is_zero(&uso->ref_space_use[type])) {
return XRT_SUCCESS;
}
U_LOG_D("Ref-space %s no longer in use", type_to_small_string(type));
/*
* This space intentionally left blank for future expansion,
* use it for adding new functionality on used/unused switches.
*/
return XRT_SUCCESS;
}
static void
destroy(struct xrt_space_overseer *xso)
{
@ -471,6 +532,8 @@ u_space_overseer_create(void)
uso->base.create_pose_space = create_pose_space;
uso->base.locate_space = locate_space;
uso->base.locate_device = locate_device;
uso->base.ref_space_inc = ref_space_inc;
uso->base.ref_space_dec = ref_space_dec;
uso->base.destroy = destroy;
XRT_MAYBE_UNUSED int ret = 0;