OpenHMD API mockup

openhmd.h

/*
 * OpenHMD - Free and Open Source API and drivers for immersive technology.
 * Copyright (C) 2013 Fredrik Hultin.
 * Copyright (C) 2013 Jakob Bornecrantz.
 * Distributed under the Boost 1.0 licence, see LICENSE for full text.
 */

#ifndef OPENHMD_H
#define OPENHMD_H

#ifdef __cplusplus
extern "C" {
#endif

#ifdef _WIN32
#ifdef DLL_EXPORT
#define OHMD_APIENTRY __cdecl __declspec( dllexport )
#else
#ifdef OHMD_STATIC
#define OHMD_APIENTRY __cdecl
#else
#define OHMD_APIENTRY __cdecl __declspec( dllimport )
#endif
#endif
#else
#define OHMD_APIENTRY
#endif

typedef enum {
	OHMD_DEVICE_VENDOR	= 0x0001,
	OHMD_DEVICE_NAME	= 0x0002,
	OHMD_DEVICE_PATH	= 0x0003,
	OHMD_EXTENSIONS		= 0x0004,
} OHMDstring_token;

typedef enum {
	OHMD_DEVICE_COUNT	= 0x0005,
	OHMD_VERSION_MAJOR	= 0x0006,
	OHMD_VERSION_MINOR	= 0x0007
} OHMDint_token;

typedef enum {
	OHMD_ROTATION_EULER	= 0x0008,
	OHMD_ROTATION_QUAT	= 0x0009,
	OHMD_POSITION		= 0x000a,
	OHMD_VELOCITY		= 0x000b,
	OHMD_CHROMA_PARAMETERS	= 0x000c,
	OHMD_WARP_PARAMETERS	= 0x000d,
} OHMDfloat_token;

typedef OHMDbyte char;
typedef OHMDfloat float;
typedef OHMDuint unsigned int;
typedef OHMDdevice void;
typedef OHMDcontext void;

OHMD_APIENTRY void ohmd_get_integer(OHMDdevice* devices, OHMDint_token token, OHMDuint* out);
OHMD_APIENTRY void ohmd_get_float3(OHMDdevice* devices, OHMDfloat_token, OHMDfloat* out);
OHMD_APIENTRY void ohmd_get_float4(OHMDdevice* devices, OHMDfloat_token token, OHMDfloat* out);
OHMD_APIENTRY void ohmd_get_string(OHMDdevice* devices, OHMDstring_token token, OHMDbyte* out);

OHMD_APIENTRY void ohmd_scan_devices(OHMDcontext* context, OHMDdevice* devices, OHMDuint* count);
OHMD_APIENTRY void ohmd_free_devices(OHMDdevice* devices, OHMDuint count);

OHMD_APIENTRY OHMDcontext* ohmd_create_context();
OHMD_APIENTRY void ohmd_destroy_context(OHMDcontext*);
OHMD_APIENTRY void ohmd_make_context_current(OHMDcontext*);

OHMD_APIENTRY void ohmd_poll_events();

/* example extension stuff */
/* OHMD_EXT_compute_matrices */
typedef enum {
	OHMD_LEFT_EYE_MODELVIEW_EXT = 0x1001,
	OHMD_RIGHT_EYE_MODELVIEW_EXT = 0x1002,
	OHMD_LEFT_EYE_PROJECTION_EXT = 0x1003,
	OHMD_RIGHT_EYE_PROJECTION_EXT = 0x1004
} OHMDmatrix_token;

OHMD_APIENTRY void ohmd_get_matrix4f_ext(OHMDdevice*, OHMDmatrix_token, OHMDfloat* out);

#ifdef __cplusplus
}
#endif

#endif