Add HLE DSP files

CMakeLists.txt

@@ -197,7 +197,7 @@ set(APPLET_SOURCE_FILES src/core/applets/applet.cpp src/core/applets/mii_selecto
                         src/core/applets/error_applet.cpp
 )
 set(AUDIO_SOURCE_FILES src/core/audio/dsp_core.cpp src/core/audio/null_core.cpp src/core/audio/teakra_core.cpp
-                       src/core/audio/miniaudio_device.cpp
+                       src/core/audio/miniaudio_device.cpp src/core/audio/hle_core.cpp
 )
 set(RENDERER_SW_SOURCE_FILES src/core/renderer_sw/renderer_sw.cpp)
 
@@ -234,6 +234,7 @@ set(HEADER_FILES include/emulator.hpp include/helpers.hpp include/termcolor.hpp
                  include/PICA/dynapica/shader_rec_emitter_arm64.hpp include/scheduler.hpp include/applets/error_applet.hpp
                  include/audio/dsp_core.hpp include/audio/null_core.hpp include/audio/teakra_core.hpp
                  include/audio/miniaudio_device.hpp include/ring_buffer.hpp include/bitfield.hpp include/audio/dsp_shared_mem.hpp
+                 include/audio/hle_core.hpp
 )
 
 cmrc_add_resource_library(

include/audio/dsp_core.hpp

@@ -37,7 +37,7 @@ namespace Audio {
 		MAKE_LOG_FUNCTION(log, dspLogger)
 
 	  public:
-		enum class Type { Null, Teakra };
+		enum class Type { Null, Teakra, HLE };
 		DSPCore(Memory& mem, Scheduler& scheduler, DSPService& dspService)
 			: mem(mem), scheduler(scheduler), dspService(dspService) {}
 		virtual ~DSPCore() {}

include/audio/hle_core.hpp

@@ -0,0 +1,46 @@
+#pragma once
+#include <array>
+
+#include "audio/dsp_core.hpp"
+#include "audio/dsp_shared_mem.hpp"
+#include "memory.hpp"
+
+namespace Audio {
+	class HLE_DSP : public DSPCore {
+		enum class DSPState : u32 {
+			Off,
+			On,
+			Slep,
+		};
+
+		// Number of DSP pipes
+		static constexpr size_t pipeCount = 8;
+		DSPState dspState;
+
+		std::array<std::vector<u8>, pipeCount> pipeData;  // The data of each pipe
+		std::array<u8, Memory::DSP_RAM_SIZE> dspRam;
+
+		void resetAudioPipe();
+		bool loaded = false; // Have we loaded a component?
+
+	  public:
+		HLE_DSP(Memory& mem, Scheduler& scheduler, DSPService& dspService) : DSPCore(mem, scheduler, dspService) {}
+		~HLE_DSP() override {}
+
+		void reset() override;
+		void runAudioFrame() override;
+
+		u8* getDspMemory() override { return dspRam.data(); }
+
+		u16 recvData(u32 regId) override;
+		bool recvDataIsReady(u32 regId) override { return true; }  // Treat data as always ready
+		void writeProcessPipe(u32 channel, u32 size, u32 buffer) override;
+		std::vector<u8> readPipe(u32 channel, u32 peer, u32 size, u32 buffer) override;
+
+		void loadComponent(std::vector<u8>& data, u32 programMask, u32 dataMask) override;
+		void unloadComponent() override;
+		void setSemaphore(u16 value) override {}
+		void setSemaphoreMask(u16 value) override {}
+	};
+
+}  // namespace Audio

src/core/audio/dsp_core.cpp

@@ -1,5 +1,6 @@
 #include "audio/dsp_core.hpp"
 
+#include "audio/hle_core.hpp"
 #include "audio/null_core.hpp"
 #include "audio/teakra_core.hpp"
 
@@ -13,6 +14,7 @@ std::unique_ptr<Audio::DSPCore> Audio::makeDSPCore(DSPCore::Type type, Memory& m
 	switch (type) {
 		case DSPCore::Type::Null: core = std::make_unique<NullDSP>(mem, scheduler, dspService); break;
 		case DSPCore::Type::Teakra: core = std::make_unique<TeakraDSP>(mem, scheduler, dspService); break;
+        case DSPCore::Type::HLE: core = std::make_unique<HLE_DSP>(mem, scheduler, dspService); break;
 
 		default:
 			Helpers::warn("Invalid DSP core selected!");
@@ -29,10 +31,8 @@ Audio::DSPCore::Type Audio::DSPCore::typeFromString(std::string inString) {
 	std::transform(inString.begin(), inString.end(), inString.begin(), [](unsigned char c) { return std::tolower(c); });
 
 	static const std::unordered_map<std::string, Audio::DSPCore::Type> map = {
-		{"null", Audio::DSPCore::Type::Null},
-		{"none", Audio::DSPCore::Type::Null},
-		{"lle", Audio::DSPCore::Type::Teakra},
-		{"teakra", Audio::DSPCore::Type::Teakra},
+		{"null", Audio::DSPCore::Type::Null},     {"none", Audio::DSPCore::Type::Null}, {"lle", Audio::DSPCore::Type::Teakra},
+		{"teakra", Audio::DSPCore::Type::Teakra}, {"hle", Audio::DSPCore::Type::HLE},   {"fast", Audio::DSPCore::Type::HLE},
 	};
 
 	if (auto search = map.find(inString); search != map.end()) {
@@ -47,6 +47,7 @@ const char* Audio::DSPCore::typeToString(Audio::DSPCore::Type type) {
 	switch (type) {
 		case Audio::DSPCore::Type::Null: return "null";
 		case Audio::DSPCore::Type::Teakra: return "teakra";
+        case Audio::DSPCore::Type::HLE: return "hle";
 		default: return "invalid";
 	}
 }

src/core/audio/hle_core.cpp

@@ -0,0 +1,166 @@
+#include "audio/hle_core.hpp"
+
+#include "services/dsp.hpp"
+
+namespace Audio {
+	namespace DSPPipeType {
+		enum : u32 {
+			Debug = 0,
+			DMA = 1,
+			Audio = 2,
+			Binary = 3,
+		};
+	}
+
+	void HLE_DSP::resetAudioPipe() {
+		// Hardcoded responses for now
+		// These are DSP DRAM offsets for various variables
+		// https://www.3dbrew.org/wiki/DSP_Memory_Region
+		static constexpr std::array<u16, 16> responses = {
+			0x000F,  // Number of responses
+			0xBFFF,  // Frame counter
+			0x9E92,  // Source configs
+			0x8680,  // Source statuses
+			0xA792,  // ADPCM coefficients
+			0x9430,  // DSP configs
+			0x8400,  // DSP status
+			0x8540,  // Final samples
+			0x9492,  // Intermediate mix samples
+			0x8710,  // Compressor
+			0x8410,  // Debug
+			0xA912,  // ??
+			0xAA12,  // ??
+			0xAAD2,  // ??
+			0xAC52,  // Surround sound biquad filter 1
+			0xAC5C   // Surround sound biquad filter 2
+		};
+
+		std::vector<u8>& audioPipe = pipeData[DSPPipeType::Audio];
+		audioPipe.resize(responses.size() * sizeof(u16));
+
+		// Push back every response to the audio pipe
+		size_t index = 0;
+		for (auto e : responses) {
+			audioPipe[index++] = e & 0xff;
+			audioPipe[index++] = e >> 8;
+		}
+	}
+
+	void HLE_DSP::reset() {
+		loaded = false;
+		for (auto& e : pipeData) {
+			e.clear();
+		}
+
+		// Note: Reset audio pipe AFTER resetting all pipes, otherwise the new data will be yeeted
+		resetAudioPipe();
+	}
+
+	void HLE_DSP::loadComponent(std::vector<u8>& data, u32 programMask, u32 dataMask) {
+		if (loaded) {
+			Helpers::warn("Loading DSP component when already loaded");
+		}
+
+		loaded = true;
+		scheduler.addEvent(Scheduler::EventType::RunDSP, scheduler.currentTimestamp + Audio::cyclesPerFrame);
+	}
+
+	void HLE_DSP::unloadComponent() {
+		if (!loaded) {
+			Helpers::warn("Audio: unloadComponent called without a running program");
+		}
+
+		loaded = false;
+		scheduler.removeEvent(Scheduler::EventType::RunDSP);
+	}
+
+	void HLE_DSP::runAudioFrame() {
+		// Signal audio pipe when an audio frame is done
+		if (dspState == DSPState::On) [[likely]] {
+			dspService.triggerPipeEvent(DSPPipeType::Audio);
+		}
+
+		scheduler.addEvent(Scheduler::EventType::RunDSP, scheduler.currentTimestamp + Audio::cyclesPerFrame);
+	}
+	
+	u16 HLE_DSP::recvData(u32 regId) {
+		if (regId != 0) {
+			Helpers::panic("Audio: invalid register in null frontend");
+		}
+
+		return dspState == DSPState::On;
+	}
+
+	void HLE_DSP::writeProcessPipe(u32 channel, u32 size, u32 buffer) {
+		enum class StateChange : u8 {
+			Initialize = 0,
+			Shutdown = 1,
+			Wakeup = 2,
+			Sleep = 3,
+		};
+
+		switch (channel) {
+			case DSPPipeType::Audio: {
+				if (size != 4) {
+					printf("Invalid size written to DSP Audio Pipe\n");
+					break;
+				}
+
+				// Get new state
+				const u8 state = mem.read8(buffer);
+				if (state > 3) {
+					log("WriteProcessPipe::Audio: Unknown state change type");
+				} else {
+					switch (static_cast<StateChange>(state)) {
+						case StateChange::Initialize:
+							// TODO: Other initialization stuff here
+							dspState = DSPState::On;
+							resetAudioPipe();
+							
+							dspService.triggerPipeEvent(DSPPipeType::Audio);
+							break;
+
+						case StateChange::Shutdown:
+							dspState = DSPState::Off;
+							break;
+
+						default: Helpers::panic("Unimplemented DSP audio pipe state change %d", state);
+					}
+				}
+				break;
+			}
+
+			case DSPPipeType::Binary:
+				Helpers::warn("Unimplemented write to binary pipe! Size: %d\n", size);
+
+				// This pipe and interrupt are normally used for requests like AAC decode
+				dspService.triggerPipeEvent(DSPPipeType::Binary);
+				break;
+
+			default: log("Audio::HLE_DSP: Wrote to unimplemented pipe %d\n", channel); break;
+		}
+	}
+
+	std::vector<u8> HLE_DSP::readPipe(u32 pipe, u32 peer, u32 size, u32 buffer) {
+		if (size & 1) Helpers::panic("Tried to read odd amount of bytes from DSP pipe");
+		if (pipe >= pipeCount || size > 0xffff) {
+			return {};
+		}
+
+		if (pipe != DSPPipeType::Audio) {
+			log("Reading from non-audio pipe! This might be broken, might need to check what pipe is being read from and implement writing to it\n");
+		}
+
+		std::vector<u8>& data = pipeData[pipe];
+		size = std::min<u32>(size, data.size());  // Clamp size to the maximum available data size
+
+		if (size == 0) {
+			return {};
+		}
+
+		// Return "size" bytes from the audio pipe and erase them
+		std::vector<u8> out(data.begin(), data.begin() + size);
+		data.erase(data.begin(), data.begin() + size);
+		return out;
+	}
+}  // namespace Audio