mirror of https://github.com/PCSX2/pcsx2.git
400 lines
8.5 KiB
C++
400 lines
8.5 KiB
C++
/* ZeroSPU2
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* Copyright (C) 2006-2007 zerofrog
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __SPU2_H__
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#define __SPU2_H__
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#include <stdio.h>
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#include <string.h>
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#include <malloc.h>
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extern "C" {
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#define SPU2defs
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#include "PS2Edefs.h"
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}
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#include "reg.h"
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#include "misc.h"
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#include <string>
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#include <vector>
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using namespace std;
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extern FILE *spu2Log;
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// Prints most of the function names of the callbacks as they are called by pcsx2.
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// I'm keeping the code in because I have a feeling it will come in handy.
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//#define PRINT_CALLBACKS
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#ifdef PRINT_CALLBACKS
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#define LOG_CALLBACK printf
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#else
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#define LOG_CALLBACK 0&&
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#endif
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#ifdef _DEBUG
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#define SPU2_LOG __Log //debug mode
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#else
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#define SPU2_LOG 0&&
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#endif
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#define SPU2_VERSION PS2E_SPU2_VERSION
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#define SPU2_REVISION 0
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#define SPU2_BUILD 4 // increase that with each version
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#define SPU2_MINOR 6
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#define OPTION_TIMESTRETCH 1 // stretches samples without changing pitch to reduce cracking
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#define OPTION_REALTIME 2 // sync to real time instead of ps2 time
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#define OPTION_MUTE 4 // don't output anything
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#define OPTION_RECORDING 8
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// ADSR constants
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#define ATTACK_MS 494L
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#define DECAYHALF_MS 286L
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#define DECAY_MS 572L
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#define SUSTAIN_MS 441L
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#define RELEASE_MS 437L
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#define CYCLES_PER_MS (36864000/1000)
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#define AUDIO_BUFFER 2048
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#define NSSIZE 48 // ~ 1 ms of data
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#define NSFRAMES 16 // gather at least NSFRAMES of NSSIZE before submitting
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#define NSPACKETS 24
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#define SPU_NUMBER_VOICES 48
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#define SAMPLE_RATE 48000L
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#define RECORD_FILENAME "zerospu2.wav"
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extern s8 *spu2regs;
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extern u16* spu2mem;
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extern int iFMod[NSSIZE];
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extern u32 MemAddr[2];
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extern unsigned long dwNoiseVal; // global noise generator
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// functions of main emu, called on spu irq
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extern void (*irqCallbackSPU2)();
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extern void (*irqCallbackDMA4)();
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extern void (*irqCallbackDMA7)();
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extern int SPUCycles, SPUWorkerCycles;
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extern int SPUStartCycle[2];
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extern int SPUTargetCycle[2];
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extern u16 interrupt;
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typedef struct {
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int Log;
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int options;
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} Config;
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extern Config conf;
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void __Log(char *fmt, ...);
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void SaveConfig();
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void LoadConfig();
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void SysMessage(char *fmt, ...);
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void LogRawSound(void* pleft, int leftstride, void* pright, int rightstride, int numsamples);
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void LogPacketSound(void* packet, int memsize);
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// simulate SPU2 for 1ms
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void SPU2Worker();
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// hardware sound functions
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int SetupSound(); // if successful, returns 0
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void RemoveSound();
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int SoundGetBytesBuffered();
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// returns 0 is successful, else nonzero
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void SoundFeedVoiceData(unsigned char* pSound,long lBytes);
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#define clamp16(dest) \
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{ \
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if ( dest < -32768L ) \
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dest = -32768L; \
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else if ( dest > 32767L ) \
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dest = 32767L; \
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}
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#define clampandwrite16(dest,value) \
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{ \
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if ( value < -32768 ) \
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dest = -32768; \
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else if ( value > 32767 ) \
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dest = 32767; \
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else \
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dest = (s16)value; \
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}
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#define spu2Rs16(mem) (*(s16*)&spu2regs[(mem) & 0xffff])
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#define spu2Ru16(mem) (*(u16*)&spu2regs[(mem) & 0xffff])
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#define IRQINFO spu2Ru16(REG_IRQINFO)
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static __forceinline u32 SPU2_GET32BIT(u32 lo, u32 hi)
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{
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return (((u32)(spu2Ru16(hi) & 0x3f) << 16) | (u32)spu2Ru16(lo));
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}
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static __forceinline void SPU2_SET32BIT(u32 value, u32 lo, u32 hi)
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{
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spu2Ru16(hi) = ((value) >> 16) & 0x3f;
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spu2Ru16(lo) = (value) & 0xffff;
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}
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static __forceinline u32 C0_IRQA()
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{
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return SPU2_GET32BIT(REG_C0_IRQA_LO, REG_C0_IRQA_HI);
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}
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static __forceinline u32 C1_IRQA()
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{
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return SPU2_GET32BIT(REG_C1_IRQA_LO, REG_C1_IRQA_HI);
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}
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static __forceinline u32 C_IRQA(int c)
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{
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if (c == 0)
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return C0_IRQA();
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else
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return C1_IRQA();
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}
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static __forceinline u32 C0_SPUADDR()
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{
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return SPU2_GET32BIT(REG_C0_SPUADDR_LO, REG_C0_SPUADDR_HI);
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}
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static __forceinline u32 C1_SPUADDR()
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{
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return SPU2_GET32BIT(REG_C1_SPUADDR_LO, REG_C1_SPUADDR_HI);
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}
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static __forceinline u32 C_SPUADDR(int c)
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{
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if (c == 0)
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return C0_SPUADDR();
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else
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return C1_SPUADDR();
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}
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static __forceinline void C0_SPUADDR_SET(u32 value)
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{
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SPU2_SET32BIT(value, REG_C0_SPUADDR_LO, REG_C0_SPUADDR_HI);
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}
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static __forceinline void C1_SPUADDR_SET(u32 value)
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{
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SPU2_SET32BIT(value, REG_C1_SPUADDR_LO, REG_C1_SPUADDR_HI);
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}
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static __forceinline void C_SPUADDR_SET(u32 value, int c)
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{
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if (c == 0)
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C0_SPUADDR_SET(value);
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else
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C1_SPUADDR_SET(value);
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}
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struct SPU_CONTROL_
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{
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u16 extCd : 1;
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u16 extAudio : 1;
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u16 cdreverb : 1;
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u16 extr : 1; // external reverb
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u16 dma : 2; // 1 - no dma, 2 - write, 3 - read
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u16 irq : 1;
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u16 reverb : 1;
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u16 noiseFreq : 6;
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u16 spuUnmute : 1;
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u16 spuon : 1;
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};
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#if defined(_MSC_VER)
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#pragma pack(1)
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#endif
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// the layout of each voice in wSpuRegs
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struct _SPU_VOICE
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{
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union
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{
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struct {
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u16 Vol : 14;
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u16 Inverted : 1;
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u16 Sweep0 : 1;
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} vol;
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struct {
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u16 Vol : 7;
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u16 res1 : 5;
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u16 Inverted : 1;
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u16 Decrease : 1; // if 0, increase
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u16 ExpSlope : 1; // if 0, linear slope
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u16 Sweep1 : 1; // always one
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} sweep;
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u16 word;
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} left, right;
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u16 pitch : 14; // 1000 - no pitch, 2000 - pitch + 1, etc
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u16 res0 : 2;
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u16 SustainLvl : 4;
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u16 DecayRate : 4;
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u16 AttackRate : 7;
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u16 AttackExp : 1; // if 0, linear
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u16 ReleaseRate : 5;
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u16 ReleaseExp : 1; // if 0, linear
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u16 SustainRate : 7;
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u16 res1 : 1;
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u16 SustainDec : 1; // if 0, inc
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u16 SustainExp : 1; // if 0, linear
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u16 AdsrVol;
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u16 Address; // add / 8
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u16 RepeatAddr; // gets reset when sample starts
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#if defined(_MSC_VER)
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}; //+22
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#else
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} __attribute__((packed));
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#endif
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// ADSR INFOS PER CHANNEL
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struct ADSRInfoEx
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{
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int State;
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int AttackModeExp;
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int AttackRate;
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int DecayRate;
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int SustainLevel;
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int SustainModeExp;
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int SustainIncrease;
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int SustainRate;
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int ReleaseModeExp;
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int ReleaseRate;
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int EnvelopeVol;
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long lVolume;
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};
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#define SPU_VOICE_STATE_SIZE (sizeof(VOICE_PROCESSED)-4*sizeof(void*))
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struct VOICE_PROCESSED
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{
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VOICE_PROCESSED()
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{
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memset(this, 0, sizeof(VOICE_PROCESSED));
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}
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void SetVolume(int right);
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void StartSound();
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void VoiceChangeFrequency();
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void InterpolateUp();
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void InterpolateDown();
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void FModChangeFrequency(int ns);
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int iGetNoiseVal();
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void StoreInterpolationVal(int fa);
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int iGetInterpolationVal();
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void Stop();
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SPU_CONTROL_* GetCtrl();
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// start save state
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int leftvol, rightvol; // left right volumes
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int iSBPos; // mixing stuff
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int SB[32+32];
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int spos;
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int sinc;
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int iIrqDone; // debug irq done flag
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int s_1; // last decoding infos
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int s_2;
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int iOldNoise; // old noise val for this channel
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int iActFreq; // current psx pitch
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int iUsedFreq; // current pc pitch
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int iStartAddr, iLoopAddr, iNextAddr;
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int bFMod;
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ADSRInfoEx ADSRX; // next ADSR settings (will be moved to active on sample start)
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int memoffset; // if first core, 0, if second, 0x400
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int chanid; // channel id
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bool bIgnoreLoop, bNew, bNoise, bReverb, bOn, bStop, bVolChanged;
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bool bVolumeR, bVolumeL;
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// end save state
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///////////////////
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// Sound Buffers //
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///////////////////
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u8* pStart; // start and end addresses
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u8* pLoop, *pCurr;
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_SPU_VOICE* pvoice;
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};
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struct AUDIOBUFFER
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{
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u8* pbuf;
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u32 len;
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// 1 if new channels started in this packet
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// Variable used to smooth out sound by concentrating on new voices
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u32 timestamp; // in microseconds, only used for time stretching
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u32 avgtime;
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int newchannels;
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};
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struct ADMA
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{
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unsigned short * MemAddr;
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int Index;
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int AmountLeft;
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int Enabled;
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// used to make sure that ADMA doesn't get interrupted with a writeDMA call
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};
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extern ADMA Adma4;
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extern ADMA Adma7;
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struct SPU2freezeData
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{
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u32 version;
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u8 spu2regs[0x10000];
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u8 spu2mem[0x200000];
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u16 interrupt;
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int nSpuIrq[2];
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u32 dwNewChannel2[2], dwEndChannel2[2];
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u32 dwNoiseVal;
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int iFMod[NSSIZE];
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u32 MemAddr[2];
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ADMA adma[2];
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u32 Adma4MemAddr, Adma7MemAddr;
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int SPUCycles, SPUWorkerCycles;
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int SPUStartCycle[2];
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int SPUTargetCycle[2];
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int voicesize;
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VOICE_PROCESSED voices[SPU_NUMBER_VOICES+1];
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};
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#endif /* __SPU2_H__ */
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