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Support HighResolutionTimer in a better fashion

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jaby
2023-01-10 20:36:28 +01:00
parent 0d1e9c3df8
commit 101fdd9299
8 changed files with 152 additions and 129 deletions
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8
include/PSX/System/IOPorts/timer_io.hpp
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@@ -29,8 +29,14 @@ namespace JabyEngine {
static constexpr auto CounterTargetValue = BitRange<uint32_t>::from_to(0, 15);
};
struct __no_align CounterValue : public ComplexBitMap<uint32_t> {
__io_port_inherit_complex_bit_map(CounterValue);
static constexpr auto Value = BitRange<uint32_t>::from_to(0, 15);
};
struct __no_align Counter {
IOPort<uint32_t> value;
IOPort<CounterValue> value;
IOPort<CounterMode> mode;
IOPort<CounterTarget> target;
private:

75
include/PSX/Timer/high_res_timer.hpp Normal file
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@@ -0,0 +1,75 @@
#ifndef __JABYENGINE_HIGH_RES_TIMER_HPP__
#define __JABYENGINE_HIGH_RES_TIMER_HPP__
#include "../jabyengine_defines.h"
#include <PSX/System/IOPorts/timer_io.hpp>
namespace JabyEngine {
struct CPUTicks {
static constexpr double Frequency_Hz = 33868800.0;
static constexpr double Frequency_Hz_Div8 = (Frequency_Hz/8.0);
template<typename T>
static constexpr T ticks_per_ns(double CPU_Frequency_Hz, double time = 1.0) {
return static_cast<T>((time/CPU_Frequency_Hz)*1000.0*1000.0*1000.0);
}
template<typename T>
static constexpr T ticks_per_us(double CPU_Frequency_Hz, double time = 1.0) {
return static_cast<T>(((time*1000.0)/ticks_per_ns<double>(CPU_Frequency_Hz)));
}
template<typename T>
static constexpr T ticks_per_ms(double CPU_Frequency_Hz, double time = 1.0) {
return static_cast<T>(((time*1000.0*1000.0)/ticks_per_ns<double>(CPU_Frequency_Hz)));
}
};
#ifdef JABYENGINE_USE_HIGH_PERCISION_TIMER
class HighResTime {
public:
class TimeStamp {
private:
uint16_t counter_10ms_value;
uint16_t fraction;
constexpr TimeStamp(uint16_t counter_10ms_value, uint16_t fraction) : counter_10ms_value(counter_10ms_value), fraction(fraction) {
}
constexpr static size_t to_us(uint16_t counter_10ms_value, uint16_t fraction) {
return counter_10ms_value*(10*1000) + ((fraction/HighResTime::TicksFor100us)*100);
}
constexpr static size_t to_ms(uint16_t counter_10ms_value, uint16_t fraction) {
return counter_10ms_value*10 + (fraction/HighResTime::TicksFor1ms);
}
public:
constexpr size_t microseconds_to(const TimeStamp& end) const {
return TimeStamp::to_us((end.counter_10ms_value - this->counter_10ms_value), (end.fraction - this->fraction));
}
constexpr size_t milliseconds_to(const TimeStamp& end) const {
return TimeStamp::to_ms((end.counter_10ms_value - this->counter_10ms_value), (end.fraction - this->fraction));
}
friend class HighResTime;
};
private:
static constexpr uint16_t TicksFor100us = CPUTicks::ticks_per_us<uint16_t>(CPUTicks::Frequency_Hz_Div8, 100.0);
static constexpr uint16_t TicksFor1ms = CPUTicks::ticks_per_ms<uint16_t>(CPUTicks::Frequency_Hz_Div8, 1.0);
static constexpr uint16_t TicksFor10ms = CPUTicks::ticks_per_ms<uint16_t>(CPUTicks::Frequency_Hz_Div8, 10.0);
static volatile uint16_t global_counter_10ms;
public:
HighResTime() = delete;
~HighResTime() = delete;
static TimeStamp get_time_stamp() {
return TimeStamp(HighResTime::global_counter_10ms, Timer_IO::Counter2.value.read().get_value(Timer_IO::CounterValue::Value));
}
};
#endif //JABYENGINE_USE_HIGH_PERCISION_TIMER
}
#endif //!__JABYENGINE_HIGH_RES_TIMER_HPP__

45
include/PSX/Timer/timer.hpp
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@@ -1,45 +0,0 @@
#ifndef __JABYENGINE_TIMER_HPP__
#define __JABYENGINE_TIMER_HPP__
#include "../jabyengine_defines.h"
namespace JabyEngine {
class GlobalTime {
public:
class TimeStamp {
private:
size_t value;
constexpr TimeStamp(size_t value) : value(value) {}
public:
#ifdef JABYENGINE_USE_HIGH_PERCISION_TIMER
constexpr size_t microseconds_to(const TimeStamp& ts) const {
return (ts.value - this->value)*100;
}
constexpr size_t milliseconds_to(const TimeStamp& ts) const {
return microseconds_to(ts)/1000;
}
#else
constexpr size_t milliseconds_to(const TimeStamp& ts) const {
return (ts.value - this->value)*10;
}
#endif //JABYENGINE_USE_HIGH_PERCISION_TIMER
friend class GlobalTime;
};
private:
static volatile size_t global_counter;
public:
GlobalTime() = delete;
~GlobalTime() = delete;
static TimeStamp get_time_stamp() {
return TimeStamp(GlobalTime::global_counter);
}
};
}
#endif //!__JABYENGINE_TIMER_HPP__