/*************************************************************************/
/*  godot_webxr.h                                                        */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/

#ifndef GODOT_WEBXR_H
#define GODOT_WEBXR_H

#ifdef __cplusplus
extern "C" {
#endif

#include "stddef.h"

enum WebXRInputEvent {
	WEBXR_INPUT_EVENT_SELECTSTART,
	WEBXR_INPUT_EVENT_SELECTEND,
	WEBXR_INPUT_EVENT_SQUEEZESTART,
	WEBXR_INPUT_EVENT_SQUEEZEEND,
};

typedef void (*GodotWebXRSupportedCallback)(char *p_session_mode, int p_supported);
typedef void (*GodotWebXRStartedCallback)(char *p_reference_space_type);
typedef void (*GodotWebXREndedCallback)();
typedef void (*GodotWebXRFailedCallback)(char *p_message);
typedef void (*GodotWebXRInputEventCallback)(int p_event_type, int p_input_source_id);
typedef void (*GodotWebXRSimpleEventCallback)(char *p_signal_name);

extern int godot_webxr_is_supported();
extern void godot_webxr_is_session_supported(const char *p_session_mode, GodotWebXRSupportedCallback p_callback);

extern void godot_webxr_initialize(
		const char *p_session_mode,
		const char *p_required_features,
		const char *p_optional_features,
		const char *p_requested_reference_space_types,
		GodotWebXRStartedCallback p_on_session_started,
		GodotWebXREndedCallback p_on_session_ended,
		GodotWebXRFailedCallback p_on_session_failed,
		GodotWebXRInputEventCallback p_on_input_event,
		GodotWebXRSimpleEventCallback p_on_simple_event);
extern void godot_webxr_uninitialize();

extern int godot_webxr_get_view_count();
extern bool godot_webxr_get_render_target_size(int *r_size);
extern bool godot_webxr_get_transform_for_view(int p_view, float *r_transform);
extern bool godot_webxr_get_projection_for_view(int p_view, float *r_transform);
extern unsigned int godot_webxr_get_color_texture();
extern unsigned int godot_webxr_get_depth_texture();
extern unsigned int godot_webxr_get_velocity_texture();

extern bool godot_webxr_update_input_source(
		int p_input_source_id,
		float *r_target_pose,
		int *r_target_ray_mode,
		int *r_touch_index,
		int *r_has_grip_pose,
		float *r_grip_pose,
		int *r_has_standard_mapping,
		int *r_button_count,
		float *r_buttons,
		int *r_axes_count,
		float *r_axes);

extern char *godot_webxr_get_visibility_state();
extern int godot_webxr_get_bounds_geometry(float **r_points);

#ifdef __cplusplus
}
#endif

#endif // GODOT_WEBXR_H