83 lines
3.0 KiB
C++
83 lines
3.0 KiB
C++
#ifndef __JABYENGINE_SPU_PORTS_HPP__
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#define __JABYENGINE_SPU_PORTS_HPP__
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#include "../Auxiliary/io_class_helper.hpp"
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namespace SPU {
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//SampleRate is defined as 4096 == 44100Hz
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struct __no_align SampleRate {
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uint16_t raw_value = 0;
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static constexpr SampleRate from_HZ(long double freq)
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{
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constexpr long double Base = (4096.0 / 44100.0);
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return static_cast<SampleRate>(((freq*4096.0)/44100.0));
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}
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};
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struct __no_align SweepVolume {
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enum Type {
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Linear = 0,
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Exponential = 1,
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};
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enum Direction {
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Increase = 0,
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Decrease = 1,
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};
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enum Phase {
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Positive = 0,
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Negative = 1,
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};
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uint16_t raw_value = 0;
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constexpr SweepVolume() = default;
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constexpr void set_volume(int16_t volume) {
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this->raw_value = bit::value::set_normalized(this->raw_value, bit::cast<uint16_t>(volume >> 1), __start_end_bit2_start_length(0, 14));
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}
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constexpr int16_t get_volume() const {
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return bit::cast<int16_t>(bit::value::get_normalized(this->raw_value, __start_end_bit2_start_length(0, 14)));
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}
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io_class__2option_map(volume_mode, sweep_mode, 15);
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io_class__2option_map_getter(Type, linear_sweep_mode, exponential_sweep_mode, sweep_mode_type, 14);
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io_class__2option_map_getter(Direction, increase_sweep_mode, decrease_sweep_mode, sweep_mode_direction, 13);
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io_class__2option_map_getter(Phase, positive_sweep_phase, negative_sweep_phase, sweep_phase, 12);
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//Uses only 5bit of shift (0..1F (slow..fast))
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constexpr void set_sweep_shift(uint8_5b shift) {
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const uint16_t crop_value = static_cast<uint16_t>(shift); //(bit::value::crop_value(shift, 5));
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this->raw_value = bit::value::set_normalized(this->raw_value, crop_value, __start_end_bit2_start_length(2, 6));
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}
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constexpr uint8_5b get_sweep_shift() const {
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return bit::value::get_normalized(this->raw_value, __start_end_bit2_start_length(2, 6));
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}
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//0..3 maps to => +7, +6, +5, +4 or -8, -7, -6, -5
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constexpr void set_sweep_step(uint8_2b step) {
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this->raw_value = bit::value::set_normalized(this->raw_value, static_cast<uint16_t>(step), __start_end_bit2_start_length(0, 1));
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}
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constexpr uint8_2b get_sweep_step() const {
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return bit::value::get_normalized(this->raw_value, __start_end_bit2_start_length(0, 1));
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}
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};
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struct __no_align Voice {
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SweepVolume volumeLeft;
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SweepVolume volumeRight;
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/*VolatileValue<SampleRate> sampleRate;
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VolatileValue<uint16_t> adr;
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VolatileValue<uint16_t> ad; //0x...08: 15 - 0
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VolatileValue<uint16_t> sr; //0x...0A: 31 - 16
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VolatileValue<uint16_t> currentVolume; //Not used
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VolatileValue<uint16_t> repeatAdr;*/
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};
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}
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#endif //!__JABYENGINE_SPU_PORTS_HPP__
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