HLE DSP: Handle cycle drifting

include/audio/dsp_core.hpp

@@ -43,7 +43,7 @@ namespace Audio {
 		virtual ~DSPCore() {}
 
 		virtual void reset() = 0;
-		virtual void runAudioFrame() = 0;
+		virtual void runAudioFrame(u64 eventTimestamp) = 0;
 		virtual u8* getDspMemory() = 0;
 
 		virtual u16 recvData(u32 regId) = 0;

include/audio/hle_core.hpp

@@ -42,6 +42,7 @@ namespace Audio {
 				return this->bufferID > other.bufferID;
 			}
 		};
+
 		// Buffer of decoded PCM16 samples. TODO: Are there better alternatives to use over deque?
 		using SampleBuffer = std::deque<std::array<s16, 2>>;
 
@@ -53,6 +54,7 @@ namespace Audio {
 
 		std::array<float, 3> gain0, gain1, gain2;
 		u32 samplePosition;  // Sample number into the current audio buffer
+		float rateMultiplier;
 		u16 syncCount;
 		u16 currentBufferID;
 		u16 previousBufferID;
@@ -185,7 +187,7 @@ namespace Audio {
 		~HLE_DSP() override {}
 
 		void reset() override;
-		void runAudioFrame() override;
+		void runAudioFrame(u64 eventTimestamp) override;
 
 		u8* getDspMemory() override { return dspRam.rawMemory.data(); }
 

include/audio/null_core.hpp

@@ -27,7 +27,7 @@ namespace Audio {
 		~NullDSP() override {}
 
 		void reset() override;
-		void runAudioFrame() override;
+		void runAudioFrame(u64 eventTimestamp) override;
 
 		u8* getDspMemory() override { return dspRam.data(); }
 

include/audio/teakra_core.hpp

@@ -83,7 +83,7 @@ namespace Audio {
 		void reset() override;
 
 		// Run 1 slice of DSP instructions and schedule the next audio frame
-		void runAudioFrame() override {
+		void runAudioFrame(u64 eventTimestamp) override {
 			runSlice();
 			scheduler.addEvent(Scheduler::EventType::RunDSP, scheduler.currentTimestamp + Audio::lleSlice * 2);
 		}