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◆ main openmsx / src / sound / EmuTimer.cc
2.4 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
e8555c89 Andy McCall 1 
#include "EmuTimer.hh"
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#include "serialize.hh"
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#include <memory>
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namespace openmsx {
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std::unique_ptr<EmuTimer> EmuTimer::createOPM_1(
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	Scheduler& scheduler, EmuTimerCallback& cb)
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{
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	return std::make_unique<EmuTimer>(
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		scheduler, cb, 1, 3579545, 64 * 2, 1024);
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}
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std::unique_ptr<EmuTimer> EmuTimer::createOPM_2(
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	Scheduler& scheduler, EmuTimerCallback& cb)
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{
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	return std::make_unique<EmuTimer>(
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		scheduler, cb, 2, 3579545, 64 * 2 * 16, 256);
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}
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std::unique_ptr<EmuTimer> EmuTimer::createOPP_2(
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	Scheduler& scheduler, EmuTimerCallback& cb)
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{
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	return std::make_unique<EmuTimer>(
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		scheduler, cb, 2, 3579545, 64 * 2 * 32, 256);
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}
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std::unique_ptr<EmuTimer> EmuTimer::createOPL3_1(
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	Scheduler& scheduler, EmuTimerCallback& cb)
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{
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	return std::make_unique<EmuTimer>(
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		scheduler, cb, 0x40, 3579545, 72 * 4, 256);
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}
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std::unique_ptr<EmuTimer> EmuTimer::createOPL3_2(
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	Scheduler& scheduler, EmuTimerCallback& cb)
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{
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	return std::make_unique<EmuTimer>(
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		scheduler, cb, 0x20, 3579545, 72 * 4 * 4, 256);
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}
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std::unique_ptr<EmuTimer> EmuTimer::createOPL4_1(
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	Scheduler& scheduler, EmuTimerCallback& cb)
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{
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	return std::make_unique<EmuTimer>(
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		scheduler, cb, 0x40, 33868800, 72 * 38, 256);
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}
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std::unique_ptr<EmuTimer> EmuTimer::createOPL4_2(
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	Scheduler& scheduler, EmuTimerCallback& cb)
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{
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	return std::make_unique<EmuTimer>(
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		scheduler, cb, 0x20, 33868800, 72 * 38 * 4, 256);
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}
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EmuTimer::EmuTimer(Scheduler& scheduler_, EmuTimerCallback& cb_,
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                   uint8_t flag_, unsigned freq_num, unsigned freq_denom,
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                   int maxVal_)
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	: Schedulable(scheduler_), cb(cb_)
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	, maxVal(maxVal_), count(maxVal_)
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	, flag(flag_)
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{
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	clock.setFreq(freq_num, freq_denom);
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}
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void EmuTimer::setValue(int value)
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{
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	count = maxVal - value;
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}
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void EmuTimer::setStart(bool start, EmuTime time)
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{
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	if (start != counting) {
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		counting = start;
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		if (start) {
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			schedule(time);
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		} else {
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			unschedule();
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		}
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	}
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}
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void EmuTimer::schedule(EmuTime time)
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{
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	clock.reset(time);
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	clock += count;
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	setSyncPoint(clock.getTime());
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}
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void EmuTimer::unschedule()
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{
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	removeSyncPoint();
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}
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void EmuTimer::executeUntil(EmuTime time)
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{
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	cb.callback(flag);
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	schedule(time);
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}
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template<typename Archive>
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void EmuTimer::serialize(Archive& ar, unsigned /*version*/)
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{
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	ar.template serializeBase<Schedulable>(*this);
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	ar.serialize("count",    count,
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	             "counting", counting);
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}
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INSTANTIATE_SERIALIZE_METHODS(EmuTimer);
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} // namespace openmsx