svga.c

   1 /* FCE Ultra - NES/Famicom Emulator
   2  *
   3  * Copyright notice for this file:
   4  *  Copyright (C) 1998 BERO
   5  *  Copyright (C) 2002 Ben Parnell
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 /*                      SVGA High Level Routines
  23                           FCE / FCE Ultra
  24 */
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <math.h>
  28 #include <string.h>
  29
  30 #include <stdarg.h>
  31
  32
  33 #ifndef M_PI
  34 #define M_PI 3.14159265358979323846
  35 #endif
  36
  37 #include "types.h"
  38 #include "svga.h"
  39 #include "fce.h"
  40 #include "general.h"
  41 #include "video.h"
  42 #include "sound.h"
  43 #include "version.h"
  44 #include "nsf.h"
  45 #include "palette.h"
  46 #include "fds.h"
  47 #include "netplay.h"
  48 #include "state.h"
  49 #include "cart.h"
  50 #include "input.h"
  51
  52 #include "vsuni.h"
  53
  54 FCEUS FSettings;
  55
  56 static int howlong;
  57 static char errmsg[65];
  58
  59 void FCEU_PrintError(char *format, ...)
  60 {
  61  char temp[2048];
  62
  63  va_list ap;
  64
  65  va_start(ap,format);
  66  vsprintf(temp,format,ap);
  67  FCEUD_PrintError(temp);
  68
  69  va_end(ap);
  70 }
  71
  72 void FCEU_DispMessage(char *format, ...)
  73 {
  74  va_list ap;
  75
  76  va_start(ap,format);
  77  vsprintf(errmsg,format,ap);
  78  va_end(ap);
  79
  80  howlong=180;
  81  if (errmsg[0] != '|')
  82   printf("%s\n", errmsg);
  83 }
  84
  85 void FCEUI_SetRenderedLines(int ntscf, int ntscl, int palf, int pall)
  86 {
  87  FSettings.UsrFirstSLine[0]=ntscf;
  88  FSettings.UsrLastSLine[0]=ntscl;
  89  FSettings.UsrFirstSLine[1]=palf;
  90  FSettings.UsrLastSLine[1]=pall;
  91  if(PAL)
  92  {
  93   FSettings.FirstSLine=FSettings.UsrFirstSLine[1];
  94   FSettings.LastSLine=FSettings.UsrLastSLine[1];
  95  }
  96  else
  97  {
  98   FSettings.FirstSLine=FSettings.UsrFirstSLine[0];
  99   FSettings.LastSLine=FSettings.UsrLastSLine[0];
 100  }
 101
 102 }
 103
 104 void FCEUI_SetVidSystem(int a)
 105 {
 106  FSettings.PAL=a?1:0;
 107  FCEU_ResetVidSys();
 108  FCEU_ResetPalette();
 109 }
 110
 111 int FCEUI_GetCurrentVidSystem(int *slstart, int *slend)
 112 {
 113  if(slstart)
 114   *slstart=FSettings.FirstSLine;
 115  if(slend)
 116   *slend=FSettings.LastSLine;
 117  return(PAL);
 118 }
 119
 120 #ifdef NETWORK
 121 void FCEUI_SetNetworkPlay(int type)
 122 {
 123  FSettings.NetworkPlay=type;
 124 }
 125 #endif
 126
 127 void FCEUI_SetGameGenie(int a)
 128 {
 129  FSettings.GameGenie=a?1:0;
 130 }
 131
 132 #ifndef NETWORK
 133 #define netplay 0
 134 #endif
 135
 136 uint8 Exit=0;
 137
 138 uint8 DIPS=0;
 139
 140 uint8 CommandQueue=0;
 141
 142 static int controlselect=0;
 143 static int ntsccol=0;
 144 static int ntsctint=46+10;
 145 static int ntschue=72;
 146 static int controllength=0;
 147
 148
 149 void FCEUI_SetSnapName(int a)
 150 {
 151  FSettings.SnapName=a;
 152 }
 153
 154 void FCEUI_SaveExtraDataUnderBase(int a)
 155 {
 156  FSettings.SUnderBase=a;
 157 }
 158
 159
 160 void FCEUI_SelectState(int w)
 161 {
 162  // if(netplay!=2 && FCEUGameInfo.type!=GIT_NSF)
 163  //  CommandQueue=42+w;
 164 }
 165
 166 void FCEUI_SaveState(void)
 167 {
 168  // if(netplay!=2 && FCEUGameInfo.type!=GIT_NSF)
 169  //  CommandQueue=40;
 170
 171  //CheckStates();
 172  SaveState();
 173 }
 174
 175 void FCEUI_LoadState(void)
 176 {
 177  // if(netplay!=2 && FCEUGameInfo.type!=GIT_NSF)
 178  //  CommandQueue=41;
 179  //CheckStates();
 180  LoadState();
 181 }
 182
 183 int32 FCEUI_GetDesiredFPS(void)
 184 {
 185   if(PAL)
 186    return(838977920); // ~50.007
 187   else
 188    return(1008307711);  // ~60.1
 189 }
 190
 191 static int dosnapsave=0;
 192 void FCEUI_SaveSnapshot(void)
 193 {
 194  dosnapsave=1;
 195 }
 196
 197 /* I like the sounds of breaking necks. */
 198 static void ReallySnap(void)
 199 {
 200  int x=SaveSnapshot();
 201  if(!x)
 202   FCEU_DispMessage("Error saving screen snapshot.");
 203  else
 204   FCEU_DispMessage("Screen snapshot %d saved.",x-1);
 205 }
 206
 207 void DriverInterface(int w, void *d)
 208 {
 209  switch(w)
 210  {
 211   case DES_NTSCCOL:ntsccol=*(int *)d;FCEU_ResetPalette();break;
 212   case DES_RESET:if(netplay!=2) CommandQueue=30;break;
 213   case DES_POWER:if(netplay!=2) CommandQueue=31;break;
 214   case DES_GETNTSCTINT:*(int*)d=ntsctint;break;
 215   case DES_GETNTSCHUE:*(int*)d=ntschue;break;
 216   case DES_SETNTSCTINT:ntsctint=*(int*)d;if(ntsccol)FCEU_ResetPalette();break;
 217   case DES_SETNTSCHUE:ntschue=*(int*)d;if(ntsccol)FCEU_ResetPalette();break;
 218
 219   case DES_FDSINSERT:if(netplay!=2) CommandQueue=2;break;
 220   case DES_FDSEJECT:if(netplay!=2) CommandQueue=3;break;
 221   case DES_FDSSELECT:if(netplay!=2) CommandQueue=1;break;
 222 /*
 223   case DES_NSFINC:NSFControl(1);break;
 224   case DES_NSFDEC:NSFControl(2);break;
 225   case DES_NSFRES:NSFControl(0);break;
 226 */
 227   case DES_VSUNIDIPSET:CommandQueue=10+(int)d;break;
 228   case DES_VSUNITOGGLEDIPVIEW:CommandQueue=10;break;
 229   case DES_VSUNICOIN:CommandQueue=19;break;
 230   case DES_NTSCSELHUE:if(ntsccol && FCEUGameInfo.type!=GIT_VSUNI && !PAL && FCEUGameInfo.type!=GIT_NSF){controlselect=1;controllength=360;}break;
 231   case DES_NTSCSELTINT:if(ntsccol && FCEUGameInfo.type!=GIT_VSUNI && !PAL && FCEUGameInfo.type!=GIT_NSF){controlselect=2;controllength=360;}break;
 232 #if 0
 233   case DES_NTSCDEC:
 234                   if(ntsccol && FCEUGameInfo.type!=GIT_VSUNI && !PAL && FCEUGameInfo.type!=GIT_NSF)
 235                   {
 236                    char which;
 237                    if(controlselect)
 238                    {
 239                     if(controllength)
 240                     {
 241                      which=controlselect==1?ntschue:ntsctint;
 242                      which--;
 243                      if(which<0) which=0;
 244                          if(controlselect==1)
 245                           ntschue=which;
 246                          else ntsctint=which;
 247                      CalculatePalette();
 248                     }
 249                    controllength=360;
 250                     }
 251                    }
 252                   break;
 253   case DES_NTSCINC:
 254                    if(ntsccol && FCEUGameInfo.type!=GIT_VSUNI && !PAL && FCEUGameInfo.type!=GIT_NSF)
 255                      if(controlselect)
 256                      {
 257                       if(controllength)
 258                       {
 259                        switch(controlselect)
 260                        {
 261                         case 1:ntschue++;
 262                                if(ntschue>128) ntschue=128;
 263                                CalculatePalette();
 264                                break;
 265                         case 2:ntsctint++;
 266                                if(ntsctint>128) ntsctint=128;
 267                                CalculatePalette();
 268                                break;
 269                        }
 270                       }
 271                       controllength=360;
 272                      }
 273                     break;
 274 #endif
 275   }
 276 }
 277
 278
 279 #include "drawing.h"
 280 #ifdef FRAMESKIP
 281 void FCEU_PutImageDummy(void)
 282 {
 283  if(FCEUGameInfo.type!=GIT_NSF)
 284  {
 285   if(controllength) controllength--;
 286  }
 287  if(howlong) howlong--; /* DrawMessage() */
 288  #ifdef FPS
 289  {
 290   extern uint64 frcount;
 291   frcount++;
 292  }
 293  #endif
 294
 295 }
 296 #endif
 297
 298 void FCEU_PutImage(void)
 299 {
 300         if(FCEUGameInfo.type==GIT_NSF)
 301         {
 302          DrawNSF(XBuf);
 303          /* Save snapshot after NSF screen is drawn.  Why would we want to
 304             do it before?
 305          */
 306          if(dosnapsave)
 307          {
 308           ReallySnap();
 309           dosnapsave=0;
 310          }
 311         }
 312         else
 313         {
 314          /* Save snapshot before overlay stuff is written. */
 315          if(dosnapsave)
 316          {
 317           ReallySnap();
 318           dosnapsave=0;
 319          }
 320          if(FCEUGameInfo.type==GIT_VSUNI)
 321                  FCEU_VSUniDraw(XBuf);
 322
 323          //FCEU_DrawSaveStates(XBuf);
 324          //FCEU_DrawMovies(XBuf);
 325          //FCEU_DrawNTSCControlBars(XBuf);
 326          //FCEU_DrawRecordingStatus(XBuf);
 327
 328          //if(controllength) {controllength--;DrawBars();}
 329         }
 330         DrawMessage();
 331         #ifdef FPS
 332         {
 333         extern uint64 frcount;
 334         frcount++;
 335         }
 336         #endif
 337         DrawInput(XBuf+8);
 338 }
 339
 340 #if 0
 341 void DoCommand(uint8 c)
 342 {
 343  switch(c)
 344  {
 345   case 1:FDSControl(FDS_SELECT);break;
 346   case 2:FDSControl(FDS_IDISK);break;
 347   case 3:FDSControl(FDS_EJECT);break;
 348
 349   case 10:DIPS^=2;break;
 350   case 11:vsdip^=1;DIPS|=2;break;
 351   case 12:vsdip^=2;DIPS|=2;break;
 352   case 13:vsdip^=4;DIPS|=2;break;
 353   case 14:vsdip^=8;DIPS|=2;break;
 354   case 15:vsdip^=0x10;DIPS|=2;break;
 355   case 16:vsdip^=0x20;DIPS|=2;break;
 356   case 17:vsdip^=0x40;DIPS|=2;break;
 357   case 18:vsdip^=0x80;DIPS|=2;break;
 358   case 19:coinon=6;break;
 359   case 30:ResetNES();break;
 360   case 31:PowerNES();break;
 361   case 40:CheckStates();StateShow=0;SaveState();break;
 362   case 41:CheckStates();StateShow=0;LoadState();break;
 363   case 42: case 43: case 44: case 45: case 46: case 47: case 48: case 49:
 364   case 50: case 51:StateShow=180;CurrentState=c-42;CheckStates();break;
 365  }
 366 }
 367 #endif
 368