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pcsx2/plugins/PeopsSPU2/freeze.c

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/***************************************************************************
freeze.c - description
-------------------
begin : Wed May 15 2002
copyright : (C) 2002 by Pete Bernert
email : BlackDove@addcom.de
***************************************************************************/
/***************************************************************************
* *
* This program 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 2 of the License, or *
* (at your option) any later version. See also the license.txt file for *
* additional informations. *
* *
***************************************************************************/
//*************************************************************************//
// History of changes:
//
// 2004/12/24 - Pete
// - freeze functions adapted to pcsx2-0.7
//
// 2004/04/04 - Pete
// - changed plugin to emulate PS2 spu
//
// 2003/03/20 - Pete
// - fix to prevent the new interpolations from crashing when loading a save state
//
// 2003/01/06 - Pete
// - small changes for version 1.3 adsr save state loading
//
// 2002/05/15 - Pete
// - generic cleanup for the Peops release
//
//*************************************************************************//
#include "stdafx.h"
#define _IN_FREEZE
#include "externals.h"
#include "registers.h"
#include "spu.h"
#include "regs.h"
#include "debug.h"
#include "resource.h"
////////////////////////////////////////////////////////////////////////
// freeze structs
////////////////////////////////////////////////////////////////////////
typedef struct {
int size;
char *data;
} SPUFreeze_t;
typedef struct
{
char szSPUName[8];
unsigned long ulFreezeVersion;
unsigned long ulFreezeSize;
unsigned char cSPUPort[64*1024];
unsigned char cSPURam[2*1024*1024];
} SPUFreeze_Ex_t;
typedef struct
{
unsigned long spuIrq0;
unsigned long spuIrq1;
unsigned long pSpuIrq0;
unsigned long pSpuIrq1;
unsigned long dummy0;
unsigned long dummy1;
unsigned long dummy2;
unsigned long dummy3;
SPUCHAN s_chan[MAXCHAN];
} SPUOSSFreeze_t;
////////////////////////////////////////////////////////////////////////
void LoadStateV1(SPUFreeze_Ex_t * pF); // newest version
void LoadStateUnknown(SPUFreeze_Ex_t * pF); // unknown format
////////////////////////////////////////////////////////////////////////
// SPUFREEZE: called by main emu on savestate load/save
////////////////////////////////////////////////////////////////////////
EXPORT_GCC long CALLBACK SPU2freeze(unsigned long ulFreezeMode,SPUFreeze_t * pFt)
{
int i;SPUOSSFreeze_t * pFO;SPUFreeze_Ex_t * pF;
if(!pFt) return 0; // first check
if(ulFreezeMode) // save?
{//--------------------------------------------------//
pFt->size=sizeof(SPUFreeze_Ex_t)+sizeof(SPUOSSFreeze_t);
if(ulFreezeMode==2) return 0; // emu just asking for size? bye
if(!pFt->data) return 0;
pF=(SPUFreeze_Ex_t *)pFt->data;
memset(pF,0,pFt->size);
strcpy(pF->szSPUName,"PBOSS2");
pF->ulFreezeVersion=1;
pF->ulFreezeSize=pFt->size;
// save mode:
RemoveTimer(); // stop timer
memcpy(pF->cSPURam,spuMem,2*1024*1024); // copy common infos
memcpy(pF->cSPUPort,regArea,64*1024);
pFO=(SPUOSSFreeze_t *)(pF+1); // store special stuff
pFO->spuIrq0=spuIrq2[0];
if(pSpuIrq[0]) pFO->pSpuIrq0 = (unsigned long)pSpuIrq[0]-(unsigned long)spuMemC;
pFO->spuIrq1=spuIrq2[1];
if(pSpuIrq[1]) pFO->pSpuIrq1 = (unsigned long)pSpuIrq[1]-(unsigned long)spuMemC;
for(i=0;i<MAXCHAN;i++)
{
memcpy((void *)&pFO->s_chan[i],(void *)&s_chan[i],sizeof(SPUCHAN));
if(pFO->s_chan[i].pStart)
pFO->s_chan[i].pStart-=(unsigned long)spuMemC;
if(pFO->s_chan[i].pCurr)
pFO->s_chan[i].pCurr-=(unsigned long)spuMemC;
if(pFO->s_chan[i].pLoop)
pFO->s_chan[i].pLoop-=(unsigned long)spuMemC;
}
SetupTimer(); // sound processing on again
return 1;
//--------------------------------------------------//
}
// load state:
#ifdef _WINDOWS
if(iDebugMode==1 && IsWindow(hWDebug)) // we have to disbale the debug window, if active
DestroyWindow(hWDebug);
hWDebug=0;
if(IsBadReadPtr(pFt,sizeof(SPUFreeze_t))) // check bad emu stuff
return 0;
#endif
if(pFt->size!=sizeof(SPUFreeze_Ex_t)+ // not our stuff? bye
sizeof(SPUOSSFreeze_t)) return 0;
if(!pFt->data) return 0;
pF=(SPUFreeze_Ex_t *)pFt->data;
RemoveTimer(); // we stop processing while doing the save!
memcpy(spuMem,pF->cSPURam,2*1024*1024); // get ram
memcpy(regArea,pF->cSPUPort,64*1024);
if(!strcmp(pF->szSPUName,"PBOSS2") &&
pF->ulFreezeVersion==1)
LoadStateV1(pF);
else LoadStateUnknown(pF);
// repair some globals
for(i=0x7FFE;i>=0x0000;i-=2)
{
SPU2write(i,regArea[i]);
}
// fix to prevent new interpolations from crashing
for(i=0;i<MAXCHAN;i++) s_chan[i].SB[28]=0;
SetupTimer(); // start sound processing again
#ifdef _WINDOWS
if(iDebugMode) // re-activate windows debug dialog
{
hWDebug=CreateDialog(hInst,MAKEINTRESOURCE(IDD_DEBUG),
NULL,(DLGPROC)DebugDlgProc);
SetWindowPos(hWDebug,HWND_TOPMOST,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE|SWP_SHOWWINDOW|SWP_NOACTIVATE);
UpdateWindow(hWDebug);
SetFocus(hWMain);
}
#endif
return 1;
}
////////////////////////////////////////////////////////////////////////
void LoadStateV1(SPUFreeze_Ex_t * pF)
{
int i;SPUOSSFreeze_t * pFO;
pFO=(SPUOSSFreeze_t *)(pF+1);
spuIrq2[0] = pFO->spuIrq0;
if(pFO->pSpuIrq0) pSpuIrq[0] = pFO->pSpuIrq0+spuMemC; else pSpuIrq[0]=0;
spuIrq2[1] = pFO->spuIrq1;
if(pFO->pSpuIrq1) pSpuIrq[1] = pFO->pSpuIrq1+spuMemC; else pSpuIrq[1]=0;
for(i=0;i<MAXCHAN;i++)
{
memcpy((void *)&s_chan[i],(void *)&pFO->s_chan[i],sizeof(SPUCHAN));
s_chan[i].pStart+=(unsigned long)spuMemC;
s_chan[i].pCurr+=(unsigned long)spuMemC;
s_chan[i].pLoop+=(unsigned long)spuMemC;
s_chan[i].iMute=0;
s_chan[i].iIrqDone=0;
}
}
////////////////////////////////////////////////////////////////////////
void LoadStateUnknown(SPUFreeze_Ex_t * pF)
{
int i;
for(i=0;i<MAXCHAN;i++)
{
s_chan[i].bOn=0;
s_chan[i].bNew=0;
s_chan[i].bStop=0;
s_chan[i].ADSR.lVolume=0;
s_chan[i].pLoop=spuMemC;
s_chan[i].pStart=spuMemC;
s_chan[i].iMute=0;
s_chan[i].iIrqDone=0;
}
dwNewChannel2[0]=0;
dwNewChannel2[1]=0;
dwEndChannel2[0]=0;
dwEndChannel2[1]=0;
pSpuIrq[0]=0;
pSpuIrq[1]=0;
}
////////////////////////////////////////////////////////////////////////
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