76 lines
No EOL
1.4 KiB
C++
76 lines
No EOL
1.4 KiB
C++
#pragma once
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#include "stdafx.h"
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#include "IMemoryHandler.h"
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#include "../BlipBuffer/Blip_Buffer.h"
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template<int range>
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class BaseApuChannel : public IMemoryHandler
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{
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private:
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unique_ptr<Blip_Synth<blip_good_quality, range>> _synth;
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uint16_t _lastOutput = 0;
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uint32_t _previousCycle = 0;
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Blip_Buffer *_buffer;
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protected:
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uint16_t _timer = 0;
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uint16_t _period = 0;
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uint32_t _clockDivider = 2; //All channels except triangle clock overy other cpu clock
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public:
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virtual void Clock() = 0;
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virtual bool GetStatus() = 0;
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BaseApuChannel()
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{
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_synth.reset(new Blip_Synth<blip_good_quality, range>());
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}
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void SetBuffer(Blip_Buffer *buffer)
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{
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_buffer = buffer;
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}
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void SetVolume(double volume)
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{
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_synth->volume(volume);
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}
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virtual void Run(uint32_t targetCycle)
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{
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while(_previousCycle < targetCycle) {
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if(_timer == 0) {
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Clock();
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_timer = _period;
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_previousCycle += _clockDivider;
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} else {
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uint32_t cyclesToRun = (targetCycle - _previousCycle) / _clockDivider;
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uint16_t skipCount = _timer > cyclesToRun ? cyclesToRun : _timer;
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_timer -= skipCount;
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_previousCycle += skipCount * _clockDivider;
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if(cyclesToRun == 0) {
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break;
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}
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}
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}
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}
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uint8_t ReadRAM(uint16_t addr)
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{
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return 0;
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}
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void AddOutput(uint16_t output)
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{
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if(output != _lastOutput) {
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_synth->offset_inline(_previousCycle, output - _lastOutput, _buffer);
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}
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_lastOutput = output;
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}
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void EndFrame()
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{
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_previousCycle = 0;
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}
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}; |