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// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/***************************************************************************
timer.h
Timer devices.
***************************************************************************/
#pragma once
#ifndef MAME_MACHINE_TIMER_H
#define MAME_MACHINE_TIMER_H
//**************************************************************************
// MACROS
//**************************************************************************
// macros for a timer callback functions
#define TIMER_DEVICE_CALLBACK_MEMBER(name) void name(timer_device &timer, void *ptr, s32 param)
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> timer_device
class timer_device : public device_t
{
public:
// a timer callbacks look like this
typedef device_delegate<void (timer_device &, void *, s32)> expired_delegate;
// construction/destruction
timer_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock = 0);
// inline configuration helpers
template <typename Object> void configure_generic(Object &&cb)
{
m_type = TIMER_TYPE_GENERIC;
m_callback = std::forward<Object>(cb);
}
template <class FunctionClass> void configure_generic(void (FunctionClass::*callback)(timer_device &, void *, s32), const char *name)
{
configure_generic(expired_delegate(callback, name, nullptr, static_cast<FunctionClass *>(nullptr)));
}
template <class FunctionClass> void configure_generic(const char *devname, void (FunctionClass::*callback)(timer_device &, void *, s32), const char *name)
{
configure_generic(expired_delegate(callback, name, devname, static_cast<FunctionClass *>(nullptr)));
}
template <typename Object> void configure_periodic(Object &&cb, const attotime &period)
{
m_type = TIMER_TYPE_PERIODIC;
m_callback = std::forward<Object>(cb);
m_period = period;
}
template <class FunctionClass> void configure_periodic(void (FunctionClass::*callback)(timer_device &, void *, s32), const char *name,
const attotime &period)
{
configure_periodic(expired_delegate(callback, name, nullptr, static_cast<FunctionClass *>(nullptr)), period);
}
template <class FunctionClass> void configure_periodic(const char *devname, void (FunctionClass::*callback)(timer_device &, void *, s32),
const char *name, const attotime &period)
{
configure_periodic(expired_delegate(callback, name, devname, static_cast<FunctionClass *>(nullptr)), period);
}
template <typename Object> void configure_scanline(Object &&cb, const char *screen, int first_vpos, int increment)
{
m_type = TIMER_TYPE_SCANLINE;
m_callback = std::forward<Object>(cb);
m_screen_tag = screen;
m_first_vpos = first_vpos;
m_increment = increment;
}
template <class FunctionClass> void configure_scanline(void (FunctionClass::*callback)(timer_device &, void *, s32),
const char *name, const char *screen, int first_vpos, int increment)
{
configure_scanline(expired_delegate(callback, name, nullptr, static_cast<FunctionClass *>(nullptr)), screen, first_vpos, increment);
}
template <class FunctionClass> void configure_scanline(const char *devname, void (FunctionClass::*callback)(timer_device &, void *, s32),
const char *name, const char *screen, int first_vpos, int increment)
{
configure_scanline(expired_delegate(callback, name, devname, static_cast<FunctionClass *>(nullptr)), screen, first_vpos, increment);
}
template <typename Object> void set_callback(Object &&cb) { m_callback = std::forward<Object>(cb); }
template <class FunctionClass> void set_callback(void (FunctionClass::*callback)(timer_device &, void *, s32), const char *name)
{
set_callback(expired_delegate(callback, name, nullptr, static_cast<FunctionClass *>(nullptr)));
}
void set_start_delay(const attotime &delay) { m_start_delay = delay; }
void config_param(int param) { m_param = param; }
// property getters
int param() const { return m_timer->param(); }
void *ptr() const { return m_ptr; }
bool enabled() const { return m_timer->enabled(); }
// property setters
void set_param(int param) const { assert(m_type == TIMER_TYPE_GENERIC); m_timer->set_param(param); }
void set_ptr(void *ptr) { m_ptr = ptr; }
void enable(bool enable = true) const { m_timer->enable(enable); }
// adjustments
void reset() { adjust(attotime::never, 0, attotime::never); }
void adjust(const attotime &duration, s32 param = 0, const attotime &period = attotime::never) const
{
assert(m_type == TIMER_TYPE_GENERIC);
m_timer->adjust(duration, param, period);
}
// timing information
attotime time_elapsed() const { return m_timer->elapsed(); }
attotime time_left() const { return m_timer->remaining(); }
attotime start_time() const { return m_timer->start(); }
attotime fire_time() const { return m_timer->expire(); }
attotime period() const { return m_timer ? m_timer->period() : m_period; }
private:
// device-level overrides
virtual void device_validity_check(validity_checker &valid) const override;
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
// timer types
enum timer_type
{
TIMER_TYPE_PERIODIC,
TIMER_TYPE_SCANLINE,
TIMER_TYPE_GENERIC
};
// configuration data
timer_type m_type; // type of timer
expired_delegate m_callback; // the timer's callback function
void * m_ptr; // the pointer parameter passed to the timer callback
// periodic timers only
attotime m_start_delay; // delay before the timer fires for the first time
attotime m_period; // period of repeated timer firings
s32 m_param; // the integer parameter passed to the timer callback
// scanline timers only
const char * m_screen_tag; // the tag of the screen this timer tracks
screen_device * m_screen; // pointer to the screen device
u32 m_first_vpos; // the first vertical scanline position the timer fires on
u32 m_increment; // the number of scanlines between firings
// internal state
emu_timer * m_timer; // the backing timer
bool m_first_time; // indicates that the system is starting (scanline timers only)
};
//**************************************************************************
// GLOBAL VARIABLES
//**************************************************************************
DECLARE_DEVICE_TYPE(TIMER, timer_device)
#endif // MAME_MACHINE_TIMER_H
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