mirror of https://github.com/bsnes-emu/bsnes.git
158 lines
3.7 KiB
C++
158 lines
3.7 KiB
C++
#include <ws/ws.hpp>
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namespace WonderSwan {
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APU apu;
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#include "io.cpp"
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#include "dma.cpp"
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#include "channel1.cpp"
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#include "channel2.cpp"
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#include "channel3.cpp"
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#include "channel4.cpp"
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#include "channel5.cpp"
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#include "serialization.cpp"
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auto APU::Enter() -> void {
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while(true) scheduler.synchronize(), apu.main();
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}
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auto APU::main() -> void {
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dma.run();
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channel1.run();
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channel2.run();
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channel3.run();
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channel4.run();
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channel5.run();
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dacRun();
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if(++s.sweepClock == 0) channel3.sweep();
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step(1);
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}
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auto APU::sample(uint channel, uint5 index) -> uint4 {
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uint8 data = iram.read((r.waveBase << 6) + (--channel << 4) + (index >> 1));
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if(index.bit(0) == 0) return data.bits(0,3);
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if(index.bit(0) == 1) return data.bits(4,7);
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}
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auto APU::dacRun() -> void {
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int left = 0;
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if(channel1.r.enable) left += channel1.o.left;
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if(channel2.r.enable) left += channel2.o.left;
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if(channel3.r.enable) left += channel3.o.left;
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if(channel4.r.enable) left += channel4.o.left;
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if(channel5.r.enable) left += channel5.o.left;
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left = sclamp<16>(left << 5);
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int right = 0;
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if(channel1.r.enable) right += channel1.o.right;
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if(channel2.r.enable) right += channel2.o.right;
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if(channel3.r.enable) right += channel3.o.right;
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if(channel4.r.enable) right += channel4.o.right;
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if(channel5.r.enable) right += channel5.o.right;
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right = sclamp<16>(right << 5);
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if(!r.headphoneEnable) {
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left = 0;
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right = 0;
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}
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stream->sample(left / 32768.0, right / 32768.0);
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}
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auto APU::step(uint clocks) -> void {
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clock += clocks;
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if(clock >= 0 && !scheduler.synchronizing()) co_switch(cpu.thread);
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}
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auto APU::power() -> void {
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create(APU::Enter, 3'072'000);
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stream = Emulator::audio.createStream(2, 3'072'000.0);
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bus.map(this, 0x004a, 0x004c);
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bus.map(this, 0x004e, 0x0050);
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bus.map(this, 0x0052);
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bus.map(this, 0x006a, 0x006b);
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bus.map(this, 0x0080, 0x0095);
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s.sweepClock = 0;
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r.waveBase = 0;
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r.speakerEnable = 0;
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r.speakerShift = 0;
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r.headphoneEnable = 0;
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dma.s.clock = 0;
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dma.s.source = 0;
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dma.s.length = 0;
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dma.r.source = 0;
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dma.r.length = 0;
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dma.r.rate = 0;
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dma.r.unknown = 0;
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dma.r.loop = 0;
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dma.r.target = 0;
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dma.r.direction = 0;
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dma.r.enable = 0;
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channel1.o.left = 0;
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channel1.o.right = 0;
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channel1.s.period = 0;
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channel1.s.sampleOffset = 0;
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channel1.r.pitch = 0;
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channel1.r.volumeLeft = 0;
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channel1.r.volumeRight = 0;
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channel1.r.enable = 0;
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channel2.o.left = 0;
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channel2.o.right = 0;
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channel2.s.period = 0;
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channel2.s.sampleOffset = 0;
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channel2.r.pitch = 0;
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channel2.r.volumeLeft = 0;
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channel2.r.volumeRight = 0;
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channel2.r.enable = 0;
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channel2.r.voice = 0;
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channel2.r.voiceEnableLeft = 0;
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channel2.r.voiceEnableRight = 0;
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channel3.o.left = 0;
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channel3.o.right = 0;
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channel3.s.period = 0;
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channel3.s.sampleOffset = 0;
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channel3.s.sweepCounter = 0;
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channel3.r.pitch = 0;
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channel3.r.volumeLeft = 0;
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channel3.r.volumeRight = 0;
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channel3.r.sweepValue = 0;
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channel3.r.sweepTime = 0;
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channel3.r.enable = 0;
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channel3.r.sweep = 0;
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channel4.o.left = 0;
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channel4.o.right = 0;
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channel4.s.period = 0;
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channel4.s.sampleOffset = 0;
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channel4.s.noiseOutput = 0;
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channel4.s.noiseLFSR = 0;
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channel4.r.pitch = 0;
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channel4.r.volumeLeft = 0;
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channel4.r.volumeRight = 0;
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channel4.r.noiseMode = 0;
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channel4.r.noiseReset = 0;
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channel4.r.noiseUpdate = 0;
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channel4.r.enable = 0;
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channel4.r.noise = 0;
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channel5.o.left = 0;
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channel5.o.right = 0;
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channel5.s.clock = 0;
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channel5.s.data = 0;
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channel5.r.volume = 0;
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channel5.r.scale = 0;
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channel5.r.speed = 0;
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channel5.r.enable = 0;
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channel5.r.unknown = 0;
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channel5.r.leftEnable = 0;
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channel5.r.rightEnable = 0;
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}
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}
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