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HLE DSP: Add region handling

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wheremyfoodat 2024-04-05 01:31:56 +03:00
parent a85ca0459a
commit 4070bea697
1 changed files with 22 additions and 2 deletions
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24
include/audio/hle_core.hpp
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@ -18,11 +18,31 @@ namespace Audio {
DSPState dspState;
std::array<std::vector<u8>, pipeCount> pipeData; // The data of each pipe
std::array<u8, Memory::DSP_RAM_SIZE> dspRam;
Audio::HLE::DspMemory dspRam;
void resetAudioPipe();
bool loaded = false; // Have we loaded a component?
// Get the index for the current region we'll be reading. Returns the region with the highest frame counter
// Accounting for whether one of the frame counters has wrapped around
usize readRegionIndex() const {
const auto counter0 = dspRam.region0.frameCounter;
const auto counter1 = dspRam.region1.frameCounter;
// Handle wraparound cases first
if (counter0 == 0xffff && counter1 != 0xfffe) {
return 1;
} else if (counter1 == 0xffff && counter0 != 0xfffe) {
return 0;
} else {
return counter0 > counter1 ? 0 : 0;
}
}
// DSP shared memory is double buffered; One region is being written to while the other one is being read from
Audio::HLE::SharedMemory& readRegion() { return readRegionIndex() == 0 ? dspRam.region0 : dspRam.region1; }
Audio::HLE::SharedMemory& writeRegion() { return readRegionIndex() == 0 ? dspRam.region1 : dspRam.region0; }
public:
HLE_DSP(Memory& mem, Scheduler& scheduler, DSPService& dspService) : DSPCore(mem, scheduler, dspService) {}
~HLE_DSP() override {}
@ -30,7 +50,7 @@ namespace Audio {
void reset() override;
void runAudioFrame() override;
u8* getDspMemory() override { return dspRam.data(); }
u8* getDspMemory() override { return dspRam.rawMemory.data(); }
u16 recvData(u32 regId) override;
bool recvDataIsReady(u32 regId) override { return true; } // Treat data as always ready