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tracking: Add new hand tracking interface header

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Co-authored-by: Moses Turner <moses@collabora.com>
This commit is contained in:
Jakob Bornecrantz 2022-03-06 12:33:28 +00:00
parent 7235b6a45a
commit 60cd630271
1 changed files with 107 additions and 0 deletions
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107
src/xrt/include/tracking/t_hand_tracking.h Normal file
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// Copyright 2022, Collabora, Ltd.
// SPDX-License-Identifier: BSL-1.0
/*!
* @file
* @brief Hand tracking interfaces.
* @author Jakob Bornecrantz <jakob@collabora.com>
* @ingroup xrt_iface
*/
#pragma once
#include "xrt/xrt_defines.h"
#include "xrt/xrt_frame.h"
#ifdef __cplusplus
extern "C" {
#endif
// /*!
// * Result of a two hand tracking processing.
// */
// struct t_hand_tracking_result_two
// {
// struct xrt_hand_joint_set hands[2]; // left, right
// };
/*!
* Synchronously processes frames and returns two hands.
*/
struct t_hand_tracking_sync
{
/*!
* Process left and right view and get back a result synchronously.
*/
void (*process)(struct t_hand_tracking_sync *ht_sync,
struct xrt_frame *left_frame,
struct xrt_frame *right_frame,
struct xrt_hand_joint_set *out_left_hand,
struct xrt_hand_joint_set *out_right_hand,
uint64_t *out_timestamp_ns);
/*!
* Destroy this hand tracker sync object.
*/
void (*destroy)(struct t_hand_tracking_sync *ht_sync);
};
/*!
* @copydoc t_hand_tracking_sync::process
*
* @public @memberof t_hand_tracking_sync
*/
static inline void
t_ht_sync_process(struct t_hand_tracking_sync *ht_sync,
struct xrt_frame *left_frame,
struct xrt_frame *right_frame,
struct xrt_hand_joint_set *out_left_hand,
struct xrt_hand_joint_set *out_right_hand,
uint64_t *out_timestamp_ns)
{
ht_sync->process(ht_sync, left_frame, right_frame, out_left_hand, out_right_hand, out_timestamp_ns);
}
/*!
* @copydoc t_hand_tracking_sync::destroy
*
* Helper for calling through the function pointer: does a null check and sets
* ht_sync_ptr to null if freed.
*
* @public @memberof t_hand_tracking_sync
*/
static inline void
t_ht_sync_destroy(struct t_hand_tracking_sync **ht_sync_ptr)
{
struct t_hand_tracking_sync *ht_sync = *ht_sync_ptr;
if (ht_sync == NULL) {
return;
}
ht_sync->destroy(ht_sync);
*ht_sync_ptr = NULL;
}
struct t_hand_tracking_async
{
struct xrt_frame_node node;
struct xrt_frame_sink left;
struct xrt_frame_sink right;
void (*get_hand)(struct t_hand_tracking_async *ht_async,
enum xrt_input_name name,
uint64_t desired_timestamp_ns,
struct xrt_hand_joint_set *out_value,
uint64_t *out_timestamp_ns);
void (*destroy)(struct t_hand_tracking_async *ht_async);
};
struct t_hand_tracking_async *
t_hand_tracking_async_default_create(struct xrt_frame_context *xfctx, struct t_hand_tracking_sync *sync);
#ifdef __cplusplus
} // extern "C"
#endif