Added support for playing PCM16 sounds, looping or non-looping.

It is a bit hacky and may have problems, but now SMG has music.
I'll try to do AFC / ADPCM for next commit.

PS: sorry. lots of stuff from latest commits will be reverted because, when updating, I got serious conflicts and everything was messed up :(
if you want I can help you with reintegrating what was lost.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@3570 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda.h

@@ -21,6 +21,46 @@
 #include "Common.h"
 #include "UCodes.h"
 
+
+struct ZeldaVoicePB
+{
+	// Read-Write part
+	u16 Status;						// 0x00 | 1 = play, 0 = stop
+	u16 KeyOff;						// 0x01 | writing 1 stops voice?
+	u16 RatioInt;					// 0x02 | delta? ratio? integer part
+	u16 Unk03;						// 0x03 | unknown
+	u16 NeedsReset;					// 0x04 | indicates if some values in PB need to be reset
+	u16 ReachedEnd;					// 0x05 | set to 1 when end reached
+	u16 IsBlank;					// 0x06 | 0 = normal sound, 1 = samples are always the same
+	u16 Unk07[0x29];				// 0x07 | unknown
+	u16 RatioFrac;					// 0x30 | ??? ratio fractional part
+	u16 Unk31;						// 0x31 | unknown
+	u16 CurBlock;					// 0x32 | current block?
+	u16 FixedSample;				// 0x33 | sample value for "blank" voices
+	u32 RestartPos;					// 0x34 | restart pos
+	u16 Unk36[2];					// 0x36 | unknown
+	u32 CurAddr;					// 0x38 | current address
+	u32 RemLength;					// 0x3A | remaining length
+	u16 Unk3C[0x2A];				// 0x3C | unknown
+	u16 YN1;						// 0x66 | YN1
+	u16 YN2;						// 0x67 | YN2
+	u16 Unk68[0x18];				// 0x68 | unknwon
+
+	// Read-only part
+	u16 Format;						// 0x80 | audio format
+	u16 RepeatMode;					// 0x81 | 0 = one-shot, non zero = loop
+	u16 Unk82[0x6];					// 0x82 | unknown
+	u32 LoopStartPos;				// 0x88 | loopstart pos
+	u32 Length;						// 0x8A | sound length
+	u32 StartAddr;					// 0x8C | sound start address
+	u32 UnkAddr;					// 0x8E | ???
+	u16 Padding[0x30];				// 0x90 | padding
+};
+
+// Here's a piece of pure guesswork, looking at random supposedly-PBs
+// from Zelda Four Swords.
+
+// These are 0x180 bytes large.
 struct ZPB
 {
     // R/W data =============
@@ -60,7 +100,7 @@ namespace {
 class CUCode_Zelda : public IUCode
 {
 public:
-	CUCode_Zelda(CMailHandler& _rMailHandler);
+	CUCode_Zelda(CMailHandler& _rMailHandler, u32 _CRC);
 	virtual ~CUCode_Zelda();
 
 	void HandleMail(u32 _uMail);
@@ -81,6 +121,13 @@ public:
     void DumpPB(const ZPB& _rPB);
     int DumpAFC(u8* pIn, const int size, const int srate);
 
+	u32 Read32()
+	{
+		u32 res = *(u32*)&m_Buffer[m_readOffset];
+		m_readOffset += 4;
+		return res;
+	}
+
 private:
 	enum EDSP_Codes
 	{
@@ -92,15 +139,43 @@ private:
 		DSP_FRAME_END   = 0xDCD10005,
 	};
 
-    // AFC CoefTable
-    s16 m_AFCCoefTable[32];
+	u32 m_CRC;
 
-	// Command 0x2: SyncFrame
-    int m_NumberOfFramesToRender;
-    int m_CurrentFrameToRender;
+	s32* m_TempBuffer;
+	s32* m_LeftBuffer;
+	s32* m_RightBuffer;
 
-	// List in progress
+	u16 m_AFCCoefTable[32];
+
+	bool m_bSyncInProgress;
+	u32 m_MaxVoice;
+	u32 m_SyncFlags[16];
+
+	u32 m_NumVoices;
+
+	bool m_bSyncCmdPending;
+	u32 m_CurVoice;
+	u32 m_CurBuffer;
+	u32 m_NumBuffers;
+
+	// Those are set by command 0x1 (DsetupTable)
+	u32 m_VoicePBsAddr;
+	u32 m_UnkTableAddr;
+	u32 m_AFCCoefTableAddr;
+	u32 m_ReverbPBsAddr;
+
+	u32 m_RightBuffersAddr;
+	u32 m_LeftBuffersAddr;
+	//u32 m_unkAddr;
+	u32 m_pos;
+
+	// Only in SMG ucode
+	// Set by command 0xE (DsetDMABaseAddr)
+	u32 m_DMABaseAddr;
+
+	// List, buffer management =====================
 	u32 m_numSteps;
+	bool m_bListInProgress;
 	u32 m_step;
 	u8 m_Buffer[1024];
 	void ExecuteList();
@@ -126,16 +201,12 @@ private:
 	u32 m_MixingBufferLeft;
 	u32 m_MixingBufferRight;
 
-    u32 m_MaxSyncedPB;
 
-    ZPB m_PBs[0x40];
+	void ReadVoicePB(u32 _Addr, ZeldaVoicePB& PB);
+	void WritebackVoicePB(u32 _Addr, ZeldaVoicePB& PB);
 
-	u32 Read32()
-	{
-		u32 res = *(u32*)&m_Buffer[m_readOffset];
-		m_readOffset += 4;
-		return res;
-	}
+	void MixAddVoice_PCM16(ZeldaVoicePB& PB, s32* _Buffer, int _Size);
+	void MixAddVoice(ZeldaVoicePB& PB, s32* _LeftBuffer, s32* _RightBuffer, int _Size);
 };
 
 #endif