[DSP service] ReadPipeIfPossible

include/services/dsp.hpp

@@ -3,11 +3,60 @@
 #include "logger.hpp"
 #include "memory.hpp"
 
+// Stub for DSP audio pipe
+class DSPPipe {
+	// Hardcoded responses for now
+	static constexpr std::array<u16, 16> pipeData = {
+		0x000F, //Number of responses
+		0xBFFF,
+		0x9E8E,
+		0x8680,
+		0xA78E,
+		0x9430,
+		0x8400,
+		0x8540,
+		0x948E,
+		0x8710,
+		0x8410,
+		0xA90E,
+		0xAA0E,
+		0xAACE,
+		0xAC4E,
+		0xAC58
+	};
+	uint index = 0;
+
+public:
+	void reset() {
+		index = 0;
+	}
+
+	// Read without checking if the pipe has overflowed
+	u16 readUnchecked() {
+		return pipeData[index++];
+	}
+
+	bool empty() {
+		return index >= pipeData.size();
+	}
+};
+
 class DSPService {
 	Handle handle = KernelHandles::DSP;
 	Memory& mem;
 	MAKE_LOG_FUNCTION(log, dspServiceLogger)
 
+	DSPPipe audioPipe;
+
+	// Service functions
+	void getSemaphoreHandle(u32 messagePointer);
+	void loadComponent(u32 messagePointer);
+	void readPipeIfPossible(u32 messagePointer);
+	void registerInterruptEvents(u32 messagePointer);
+	void setSemaphore(u32 messagePointer);
+	void setSemaphoreMask(u32 messagePointer);
+	void writeProcessPipe(u32 messagePointer);
+
 public:
 	DSPService(Memory& mem) : mem(mem) {}
 	void reset();