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// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/***************************************************************************
inputman.h
OSD interface to the input manager.
***************************************************************************/
#ifndef MAME_OSD_INTERFACE_INPUTMAN_H
#define MAME_OSD_INTERFACE_INPUTMAN_H
#pragma once
#include "inputcode.h"
#include <string_view>
namespace osd {
//**************************************************************************
// CONSTANTS
//**************************************************************************
// relative devices return ~512 units per on-screen pixel
constexpr s32 INPUT_RELATIVE_PER_PIXEL = 512;
// absolute devices return values between -65536 and +65536
constexpr s32 INPUT_ABSOLUTE_MIN = -65'536;
constexpr s32 INPUT_ABSOLUTE_MAX = 65'536;
// invalid memory value for axis polling
constexpr s32 INVALID_AXIS_VALUE = 0x7fff'ffff;
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// base for application representation of host input device
class input_device
{
public:
// callback for getting the value of an individual input on a device
typedef s32 (*item_get_state_func)(void *device_internal, void *item_internal);
virtual ~input_device() = default;
virtual input_item_id add_item(
std::string_view name,
input_item_id itemid,
item_get_state_func getstate,
void *internal = nullptr) = 0;
};
// base for application input manager
class input_manager
{
public:
virtual ~input_manager() = default;
virtual input_device &add_device(
input_device_class devclass,
std::string_view name,
std::string_view id,
void *internal = nullptr) = 0;
};
} // namespace osd
#endif // MAME_OSD_INTERFACE_INPUTMAN_H
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