mirror of
https://github.com/melonDS-emu/melonDS.git
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9bfc9c08ff
* Sprinkle `const` around where appropriate - This will make it easier to use `NDS` objects in `const` contexts (e.g. `const` parameters or methods) * Remove the `const` qualifier on `DSi_DSP::DSPRead16` - MMIO reads can be non-pure, so this may not be `const` in the future
114 lines
2.5 KiB
C++
114 lines
2.5 KiB
C++
/*
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Copyright 2020 PoroCYon
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This file is part of melonDS.
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melonDS is free software: you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with melonDS. If not, see http://www.gnu.org/licenses/.
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*/
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#ifndef DSI_DSP_H
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#define DSI_DSP_H
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#include "types.h"
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#include "Savestate.h"
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// TODO: for actual sound output
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// * audio callbacks
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namespace Teakra { class Teakra; }
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namespace melonDS
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{
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class DSi;
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class DSi_DSP
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{
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public:
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DSi_DSP(melonDS::DSi& dsi);
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~DSi_DSP();
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void Reset();
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void DoSavestate(Savestate* file);
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void DSPCatchUpU32(u32 _);
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// SCFG_RST bit0
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bool IsRstReleased() const;
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void SetRstLine(bool release);
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// DSP_* regs (0x040043xx) (NOTE: checks SCFG_EXT)
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u8 Read8(u32 addr);
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void Write8(u32 addr, u8 val);
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u16 Read16(u32 addr);
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void Write16(u32 addr, u16 val);
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u32 Read32(u32 addr);
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void Write32(u32 addr, u32 val);
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u16 ReadSNDExCnt() const { return SNDExCnt; }
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void WriteSNDExCnt(u16 val, u16 mask);
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// NOTE: checks SCFG_CLK9
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void Run(u32 cycles);
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void IrqRep0();
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void IrqRep1();
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void IrqRep2();
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void IrqSem();
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u16 DSPRead16(u32 addr);
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void DSPWrite16(u32 addr, u16 val);
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void AudioCb(std::array<s16, 2> frame);
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private:
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melonDS::DSi& DSi;
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// not sure whether to not rather put it somewhere else
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u16 SNDExCnt;
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Teakra::Teakra* TeakraCore;
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bool SCFG_RST;
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u16 DSP_PADR;
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u16 DSP_PCFG;
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u16 DSP_PSTS;
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u16 DSP_PSEM;
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u16 DSP_PMASK;
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u16 DSP_PCLEAR;
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u16 DSP_CMD[3];
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u16 DSP_REP[3];
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u64 DSPTimestamp;
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FIFO<u16, 16> PDATAReadFifo/*, *PDATAWriteFifo*/;
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int PDataDMALen;
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static const u32 DataMemoryOffset;
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u16 GetPSTS() const;
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inline bool IsDSPCoreEnabled() const;
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inline bool IsDSPIOEnabled() const;
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bool DSPCatchUp();
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void PDataDMAWrite(u16 wrval);
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u16 PDataDMARead();
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void PDataDMAFetch();
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void PDataDMAStart();
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void PDataDMACancel();
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u16 PDataDMAReadMMIO();
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};
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}
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#endif // DSI_DSP_H
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