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/*
Copyright 2020 PoroCYon
This file is part of melonDS.
melonDS is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with melonDS. If not, see http://www.gnu.org/licenses/.
*/
#ifndef DSI_DSP_H
#define DSI_DSP_H
#include "types.h"
#include "Savestate.h"
// TODO: for actual sound output
// * audio callbacks
namespace Teakra { class Teakra; }
namespace melonDS
{
class DSi;
class DSi_DSP
{
public:
DSi_DSP(melonDS::DSi& dsi);
~DSi_DSP();
void Reset();
void DoSavestate(Savestate* file);
void DSPCatchUpU32(u32 _);
// SCFG_RST bit0
bool IsRstReleased() const;
void SetRstLine(bool release);
// DSP_* regs (0x040043xx) (NOTE: checks SCFG_EXT)
u8 Read8(u32 addr);
void Write8(u32 addr, u8 val);
u16 Read16(u32 addr);
void Write16(u32 addr, u16 val);
u32 Read32(u32 addr);
void Write32(u32 addr, u32 val);
u16 ReadSNDExCnt() const { return SNDExCnt; }
void WriteSNDExCnt(u16 val, u16 mask);
// NOTE: checks SCFG_CLK9
void Run(u32 cycles);
void IrqRep0();
void IrqRep1();
void IrqRep2();
void IrqSem();
u16 DSPRead16(u32 addr);
void DSPWrite16(u32 addr, u16 val);
void AudioCb(std::array<s16, 2> frame);
private:
melonDS::DSi& DSi;
// not sure whether to not rather put it somewhere else
u16 SNDExCnt;
Teakra::Teakra* TeakraCore;
bool SCFG_RST;
u16 DSP_PADR;
u16 DSP_PCFG;
u16 DSP_PSTS;
u16 DSP_PSEM;
u16 DSP_PMASK;
u16 DSP_PCLEAR;
u16 DSP_CMD[3];
u16 DSP_REP[3];
u64 DSPTimestamp;
FIFO<u16, 16> PDATAReadFifo/*, *PDATAWriteFifo*/;
int PDataDMALen;
static const u32 DataMemoryOffset;
u16 GetPSTS() const;
inline bool IsDSPCoreEnabled() const;
inline bool IsDSPIOEnabled() const;
bool DSPCatchUp();
void PDataDMAWrite(u16 wrval);
u16 PDataDMARead();
void PDataDMAFetch();
void PDataDMAStart();
void PDataDMACancel();
u16 PDataDMAReadMMIO();
};
}
#endif // DSI_DSP_H
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