aboutsummaryrefslogtreecommitdiff
path: root/plugins/dfsound/freeze.c
blob: ec097c5be8139ed60fbdcbbba9dc6fe66777e425 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
/***************************************************************************
                          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.                                              *
 *                                                                         *
 ***************************************************************************/

#include "stdafx.h"

#define _IN_FREEZE

#include "externals.h"
#include "registers.h"
#include "spu.h"

////////////////////////////////////////////////////////////////////////
// freeze structs
////////////////////////////////////////////////////////////////////////

typedef struct
{
 int            State;
 int            AttackModeExp;
 int            AttackRate;
 int            DecayRate;
 int            SustainLevel;
 int            SustainModeExp;
 int            SustainIncrease;
 int            SustainRate;
 int            ReleaseModeExp;
 int            ReleaseRate;
 int            EnvelopeVol;
 long           lVolume;
 long           lDummy1;
 long           lDummy2;
} ADSRInfoEx_orig;

typedef struct
{
 // no mutexes used anymore... don't need them to sync access
 //HANDLE            hMutex;

 int               bNew;                               // start flag

 int               iSBPos;                             // mixing stuff
 int               spos;
 int               sinc;
 int               SB[32+32];                          // Pete added another 32 dwords in 1.6 ... prevents overflow issues with gaussian/cubic interpolation (thanx xodnizel!), and can be used for even better interpolations, eh? :)
 int               sval;

 unsigned char *   pStart;                             // start ptr into sound mem
 unsigned char *   pCurr;                              // current pos in sound mem
 unsigned char *   pLoop;                              // loop ptr in sound mem

 int               bOn;                                // is channel active (sample playing?)
 int               bStop;                              // is channel stopped (sample _can_ still be playing, ADSR Release phase)
 int               bReverb;                            // can we do reverb on this channel? must have ctrl register bit, to get active
 int               iActFreq;                           // current psx pitch
 int               iUsedFreq;                          // current pc pitch
 int               iLeftVolume;                        // left volume
 int               iLeftVolRaw;                        // left psx volume value
 int               bIgnoreLoop;                        // ignore loop bit, if an external loop address is used
 int               iMute;                              // mute mode
 int               iRightVolume;                       // right volume
 int               iRightVolRaw;                       // right psx volume value
 int               iRawPitch;                          // raw pitch (0...3fff)
 int               iIrqDone;                           // debug irq done flag
 int               s_1;                                // last decoding infos
 int               s_2;
 int               bRVBActive;                         // reverb active flag
 int               iRVBOffset;                         // reverb offset
 int               iRVBRepeat;                         // reverb repeat
 int               bNoise;                             // noise active flag
 int               bFMod;                              // freq mod (0=off, 1=sound channel, 2=freq channel)
 int               iRVBNum;                            // another reverb helper
 int               iOldNoise;                          // old noise val for this channel   
 ADSRInfo          ADSR;                               // active ADSR settings
 ADSRInfoEx_orig   ADSRX;                              // next ADSR settings (will be moved to active on sample start)
} SPUCHAN_orig;

typedef struct
{
 char          szSPUName[8];
 uint32_t ulFreezeVersion;
 uint32_t ulFreezeSize;
 unsigned char cSPUPort[0x200];
 unsigned char cSPURam[0x80000];
 xa_decode_t   xaS;     
} SPUFreeze_t;

typedef struct
{
 unsigned short  spuIrq;
 uint32_t   pSpuIrq;
 uint32_t   spuAddr;
 uint32_t   dummy1;
 uint32_t   dummy2;
 uint32_t   dummy3;

 SPUCHAN_orig s_chan[MAXCHAN];   

} SPUOSSFreeze_t;

////////////////////////////////////////////////////////////////////////

void LoadStateV5(SPUFreeze_t * pF);                    // newest version
void LoadStateUnknown(SPUFreeze_t * pF);               // unknown format

extern int lastch;

// we want to retain compatibility between versions,
// so use original channel struct
static void save_channel(SPUCHAN_orig *d, const SPUCHAN *s, int ch)
{
 memset(d, 0, sizeof(*d));
 d->bNew = !!(dwNewChannel & (1<<ch));
 d->iSBPos = s->iSBPos;
 d->spos = s->spos;
 d->sinc = s->sinc;
 memcpy(d->SB, s->SB, sizeof(d->SB));
 d->pStart = (unsigned char *)((regAreaGet(ch,6)&~1)<<3);
 d->pCurr = s->pCurr;
 d->pLoop = s->pLoop;
 d->bOn = !!(dwChannelOn & (1<<ch));
 d->bStop = s->bStop;
 d->bReverb = s->bReverb;
 d->iActFreq = 1;
 d->iUsedFreq = 2;
 d->iLeftVolume = s->iLeftVolume;
 // this one is nasty but safe, save compat is important
 d->bIgnoreLoop = (s->prevflags ^ 2) << 1;
 d->iRightVolume = s->iRightVolume;
 d->iRawPitch = s->iRawPitch;
 d->s_1 = s->SB[27]; // yes it's reversed
 d->s_2 = s->SB[26];
 d->bRVBActive = s->bRVBActive;
 d->bNoise = s->bNoise;
 d->bFMod = s->bFMod;
 d->ADSRX.State = s->ADSRX.State;
 d->ADSRX.AttackModeExp = s->ADSRX.AttackModeExp;
 d->ADSRX.AttackRate = s->ADSRX.AttackRate;
 d->ADSRX.DecayRate = s->ADSRX.DecayRate;
 d->ADSRX.SustainLevel = s->ADSRX.SustainLevel;
 d->ADSRX.SustainModeExp = s->ADSRX.SustainModeExp;
 d->ADSRX.SustainIncrease = s->ADSRX.SustainIncrease;
 d->ADSRX.SustainRate = s->ADSRX.SustainRate;
 d->ADSRX.ReleaseModeExp = s->ADSRX.ReleaseModeExp;
 d->ADSRX.ReleaseRate = s->ADSRX.ReleaseRate;
 d->ADSRX.EnvelopeVol = s->ADSRX.EnvelopeVol;
 d->ADSRX.lVolume = d->bOn; // hmh
}

static void load_channel(SPUCHAN *d, const SPUCHAN_orig *s, int ch)
{
 memset(d, 0, sizeof(*d));
 if (s->bNew) dwNewChannel |= 1<<ch;
 d->iSBPos = s->iSBPos;
 d->spos = s->spos;
 d->sinc = s->sinc;
 memcpy(d->SB, s->SB, sizeof(d->SB));
 d->pCurr = (void *)((long)s->pCurr & 0x7fff0);
 d->pLoop = (void *)((long)s->pLoop & 0x7fff0);
 if (s->bOn) dwChannelOn |= 1<<ch;
 d->bStop = s->bStop;
 d->bReverb = s->bReverb;
 d->iLeftVolume = s->iLeftVolume;
 d->iRightVolume = s->iRightVolume;
 d->iRawPitch = s->iRawPitch;
 d->bRVBActive = s->bRVBActive;
 d->bNoise = s->bNoise;
 d->bFMod = s->bFMod;
 d->prevflags = (s->bIgnoreLoop >> 1) ^ 2;
 d->ADSRX.State = s->ADSRX.State;
 d->ADSRX.AttackModeExp = s->ADSRX.AttackModeExp;
 d->ADSRX.AttackRate = s->ADSRX.AttackRate;
 d->ADSRX.DecayRate = s->ADSRX.DecayRate;
 d->ADSRX.SustainLevel = s->ADSRX.SustainLevel;
 d->ADSRX.SustainModeExp = s->ADSRX.SustainModeExp;
 d->ADSRX.SustainIncrease = s->ADSRX.SustainIncrease;
 d->ADSRX.SustainRate = s->ADSRX.SustainRate;
 d->ADSRX.ReleaseModeExp = s->ADSRX.ReleaseModeExp;
 d->ADSRX.ReleaseRate = s->ADSRX.ReleaseRate;
 d->ADSRX.EnvelopeVol = s->ADSRX.EnvelopeVol;
}

////////////////////////////////////////////////////////////////////////
// SPUFREEZE: called by main emu on savestate load/save
////////////////////////////////////////////////////////////////////////

long CALLBACK SPUfreeze(uint32_t ulFreezeMode,SPUFreeze_t * pF)
{
 int i;SPUOSSFreeze_t * pFO;

 if(!pF) return 0;                                     // first check

 if(ulFreezeMode)                                      // info or save?
  {//--------------------------------------------------//
   if(ulFreezeMode==1)                                 
    memset(pF,0,sizeof(SPUFreeze_t)+sizeof(SPUOSSFreeze_t));

   strcpy(pF->szSPUName,"PBOSS");
   pF->ulFreezeVersion=5;
   pF->ulFreezeSize=sizeof(SPUFreeze_t)+sizeof(SPUOSSFreeze_t);

   if(ulFreezeMode==2) return 1;                       // info mode? ok, bye
                                                       // save mode:
   memcpy(pF->cSPURam,spuMem,0x80000);                 // copy common infos
   memcpy(pF->cSPUPort,regArea,0x200);

   if(xapGlobal && XAPlay!=XAFeed)                     // some xa
    {
     pF->xaS=*xapGlobal;     
    }
   else 
   memset(&pF->xaS,0,sizeof(xa_decode_t));             // or clean xa

   pFO=(SPUOSSFreeze_t *)(pF+1);                       // store special stuff

   pFO->spuIrq=spuIrq;
   if(pSpuIrq)  pFO->pSpuIrq  = (unsigned long)pSpuIrq-(unsigned long)spuMemC;

   pFO->spuAddr=spuAddr;
   if(pFO->spuAddr==0) pFO->spuAddr=0xbaadf00d;

   for(i=0;i<MAXCHAN;i++)
    {
     if(!(s_chan[i].prevflags&2))
      dwChannelOn&=~(1<<i);

     save_channel(&pFO->s_chan[i],&s_chan[i],i);
     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;
    }

   return 1;
   //--------------------------------------------------//
  }
                                                       
 if(ulFreezeMode!=0) return 0;                         // bad mode? bye

 memcpy(spuMem,pF->cSPURam,0x80000);                   // get ram
 memcpy(regArea,pF->cSPUPort,0x200);

 if(pF->xaS.nsamples<=4032)                            // start xa again
  SPUplayADPCMchannel(&pF->xaS);

 xapGlobal=0;

 if(!strcmp(pF->szSPUName,"PBOSS") && pF->ulFreezeVersion==5)
   LoadStateV5(pF);
 else LoadStateUnknown(pF);

 lastch = -1;

 // repair some globals
 for(i=0;i<=62;i+=2)
  SPUwriteRegister(H_Reverb+i,regArea[(H_Reverb+i-0xc00)>>1]);
 SPUwriteRegister(H_SPUReverbAddr,regArea[(H_SPUReverbAddr-0xc00)>>1]);
 SPUwriteRegister(H_SPUrvolL,regArea[(H_SPUrvolL-0xc00)>>1]);
 SPUwriteRegister(H_SPUrvolR,regArea[(H_SPUrvolR-0xc00)>>1]);

 SPUwriteRegister(H_SPUctrl,(unsigned short)(regArea[(H_SPUctrl-0xc00)>>1]|0x4000));
 SPUwriteRegister(H_SPUstat,regArea[(H_SPUstat-0xc00)>>1]);
 SPUwriteRegister(H_CDLeft,regArea[(H_CDLeft-0xc00)>>1]);
 SPUwriteRegister(H_CDRight,regArea[(H_CDRight-0xc00)>>1]);

 // fix to prevent new interpolations from crashing
 for(i=0;i<MAXCHAN;i++) s_chan[i].SB[28]=0;

 ClearWorkingState();

 return 1;
}

////////////////////////////////////////////////////////////////////////

void LoadStateV5(SPUFreeze_t * pF)
{
 int i;SPUOSSFreeze_t * pFO;

 pFO=(SPUOSSFreeze_t *)(pF+1);

 spuIrq = pFO->spuIrq;
 if(pFO->pSpuIrq) pSpuIrq = spuMemC+((long)pFO->pSpuIrq&0x7fff0); else pSpuIrq=NULL;

 if(pFO->spuAddr)
  {
   spuAddr = pFO->spuAddr;
   if (spuAddr == 0xbaadf00d) spuAddr = 0;
  }

 dwNewChannel=0;
 dwChannelOn=0;
 dwChannelDead=0;
 for(i=0;i<MAXCHAN;i++)
  {
   load_channel(&s_chan[i],&pFO->s_chan[i],i);

   s_chan[i].pCurr+=(unsigned long)spuMemC;
   s_chan[i].pLoop+=(unsigned long)spuMemC;
  }
}

////////////////////////////////////////////////////////////////////////

void LoadStateUnknown(SPUFreeze_t * pF)
{
 int i;

 for(i=0;i<MAXCHAN;i++)
  {
   s_chan[i].bStop=0;
   s_chan[i].pLoop=spuMemC;
  }

 dwNewChannel=0;
 dwChannelOn=0;
 dwChannelDead=0;
 pSpuIrq=0;

 for(i=0;i<0xc0;i++)
  {
   SPUwriteRegister(0x1f801c00+i*2,regArea[i]);
  }
}

////////////////////////////////////////////////////////////////////////