mirror of
https://gitlab.freedesktop.org/monado/monado.git
synced 2025-01-24 07:31:48 +00:00
55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
|
// Copyright 2021, Collabora, Ltd.
|
||
|
|
// SPDX-License-Identifier: BSL-1.0
|
||
|
|
/*!
|
||
|
|
* @file
|
||
|
|
* @brief Small utility for keeping track of the history of an xrt_space_relation, ie. for knowing where a HMD or
|
||
|
|
* controller was in the past
|
||
|
|
* @author Moses Turner <moses@collabora.com>
|
||
|
|
* @ingroup drv_ht
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "xrt/xrt_defines.h"
|
||
|
|
struct m_relation_history;
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* Creates an opaque relation_history object.
|
||
|
|
*
|
||
|
|
* @ingroup aux_util
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
m_relation_history_create(struct m_relation_history **rh);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* Pushes a new pose to the history - if the history is full, it will also pop a pose out of the other side of the
|
||
|
|
* buffer.
|
||
|
|
*
|
||
|
|
* @ingroup aux_util
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
m_relation_history_push(struct m_relation_history *rh, struct xrt_space_relation *in_relation, uint64_t ts);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* Interpolates or extrapolates to the desired timestamp. Read-only operation - doesn't remove anything from the buffer
|
||
|
|
* or anything like that - you can call this as often as you want.
|
||
|
|
*
|
||
|
|
* @ingroup aux_util
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
m_relation_history_get(struct m_relation_history *rh, struct xrt_space_relation *out_relation, uint64_t at_time_ns);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* Destroys an opaque relation_history object.
|
||
|
|
*
|
||
|
|
* @ingroup aux_util
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
m_relation_history_destroy(struct m_relation_history **rh);
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|