pandora/emu.c

   1 // (c) Copyright 2006-2008 notaz, All rights reserved.\r
   2 // Free for non-commercial use.\r
   3 \r
   4 // For commercial use, separate licencing terms must be obtained.\r
   5 \r
   6 #include <stdio.h>\r
   7 #include <stdlib.h>\r
   8 #include <sys/time.h>\r
   9 #include <sys/stat.h>\r
  10 #include <sys/types.h>\r
  11 #include <linux/limits.h>\r
  12 #include <ctype.h>\r
  13 #include <unistd.h>\r
  14 \r
  15 #include <stdarg.h>\r
  16 \r
  17 #include "../gp2x/emu.h"\r
  18 #include "../gp2x/menu.h"\r
  19 #include "../gp2x/gp2x.h"\r
  20 #include "../common/arm_utils.h"\r
  21 #include "../common/fonts.h"\r
  22 #include "../common/emu.h"\r
  23 #include "../common/config.h"\r
  24 #include "../common/common.h"\r
  25 #include "../common/input.h"\r
  26 #include "../linux/sndout_oss.h"\r
  27 #include "asm_utils.h"\r
  28 \r
  29 #include <pico/pico_int.h>\r
  30 #include <pico/patch.h>\r
  31 #include <pico/sound/mix.h>\r
  32 #include <zlib/zlib.h>\r
  33 \r
  34 //#define PFRAMES\r
  35 #define BENCHMARK\r
  36 //#define USE_320_SCREEN 1\r
  37 \r
  38 #ifdef BENCHMARK\r
  39 #define OSD_FPS_X (800-200)\r
  40 #else\r
  41 #define OSD_FPS_X (800-120)\r
  42 #endif\r
  43 \r
  44 \r
  45 int select_exits = 0;\r
  46 \r
  47 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
  48 static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
  49 static int osd_fps_x;\r
  50 unsigned char *PicoDraw2FB = NULL;  // temporary buffer for alt renderer\r
  51 int reset_timing = 0;\r
  52 \r
  53 #define PICO_PEN_ADJUST_X 4\r
  54 #define PICO_PEN_ADJUST_Y 2\r
  55 static int pico_pen_x = 0, pico_pen_y = 240/2;\r
  56 \r
  57 static void emu_msg_cb(const char *msg);\r
  58 static void emu_msg_tray_open(void);\r
  59 \r
  60 \r
  61 void emu_noticeMsgUpdated(void)\r
  62 {\r
  63         gettimeofday(&noticeMsgTime, 0);\r
  64 }\r
  65 \r
  66 int emu_getMainDir(char *dst, int len)\r
  67 {\r
  68         extern char **g_argv;\r
  69         int j;\r
  70 \r
  71         strncpy(dst, g_argv[0], len);\r
  72         len -= 32; // reserve\r
  73         if (len < 0) len = 0;\r
  74         dst[len] = 0;\r
  75         for (j = strlen(dst); j > 0; j--)\r
  76                 if (dst[j] == '/') { dst[j+1] = 0; break; }\r
  77 \r
  78         return j + 1;\r
  79 }\r
  80 \r
  81 void emu_Init(void)\r
  82 {\r
  83         // make temp buffer for alt renderer\r
  84         PicoDraw2FB = malloc((8+320)*(8+240+8));\r
  85         if (!PicoDraw2FB)\r
  86         {\r
  87                 printf("PicoDraw2FB == 0\n");\r
  88         }\r
  89 \r
  90         // make dirs for saves, cfgs, etc.\r
  91         mkdir("mds", 0777);\r
  92         mkdir("srm", 0777);\r
  93         mkdir("brm", 0777);\r
  94         mkdir("cfg", 0777);\r
  95 \r
  96         PicoInit();\r
  97         PicoMessage = emu_msg_cb;\r
  98         PicoMCDopenTray = emu_msg_tray_open;\r
  99         PicoMCDcloseTray = menu_loop_tray;\r
 100 }\r
 101 \r
 102 \r
 103 void emu_Deinit(void)\r
 104 {\r
 105         // save SRAM\r
 106         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 107                 emu_SaveLoadGame(0, 1);\r
 108                 SRam.changed = 0;\r
 109         }\r
 110 \r
 111         if (!(currentConfig.EmuOpt & 0x20)) {\r
 112                 config_writelrom(PicoConfigFile);\r
 113 #ifndef NO_SYNC\r
 114                 sync();\r
 115 #endif\r
 116         }\r
 117 \r
 118         free(PicoDraw2FB);\r
 119 \r
 120         PicoExit();\r
 121 }\r
 122 \r
 123 void emu_prepareDefaultConfig(void)\r
 124 {\r
 125         memset(&defaultConfig, 0, sizeof(defaultConfig));\r
 126         defaultConfig.EmuOpt    = 0x8f | 0x00600; // | <- confirm_save, cd_leds\r
 127         defaultConfig.s_PicoOpt  = 0x0f | POPT_EXT_FM|POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC;\r
 128         defaultConfig.s_PicoOpt |= POPT_ACC_SPRITES|POPT_EN_MCD_GFX;\r
 129         defaultConfig.EmuOpt    &= ~8; // no save gzip\r
 130         defaultConfig.s_PsndRate = 44100;\r
 131         defaultConfig.s_PicoRegion = 0;\r
 132         defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
 133         defaultConfig.s_PicoCDBuffers = 0;\r
 134         defaultConfig.Frameskip = 0;\r
 135         defaultConfig.CPUclock = 200;\r
 136         defaultConfig.volume = 50;\r
 137         defaultConfig.scaling = 0;\r
 138         defaultConfig.turbo_rate = 15;\r
 139 }\r
 140 \r
 141 static void textOut16(int x, int y, const char *text)\r
 142 {\r
 143         int i,l,len=strlen(text);\r
 144         unsigned int *screen = (unsigned int *)((unsigned short *)g_screen_ptr + (x&~1) + y*g_screen_width);\r
 145 \r
 146         for (i = 0; i < len; i++)\r
 147         {\r
 148                 for (l=0;l<16;)\r
 149                 {\r
 150                         unsigned char fd = fontdata8x8[((text[i])*8)+l/2];\r
 151                         unsigned int *d = &screen[l*g_screen_width/2];\r
 152                         if (fd&0x80) d[0]=0xffffffff;\r
 153                         if (fd&0x40) d[1]=0xffffffff;\r
 154                         if (fd&0x20) d[2]=0xffffffff;\r
 155                         if (fd&0x10) d[3]=0xffffffff;\r
 156                         if (fd&0x08) d[4]=0xffffffff;\r
 157                         if (fd&0x04) d[5]=0xffffffff;\r
 158                         if (fd&0x02) d[6]=0xffffffff;\r
 159                         if (fd&0x01) d[7]=0xffffffff;\r
 160                         l++; d = &screen[l*g_screen_width/2];\r
 161                         if (fd&0x80) d[0]=0xffffffff;\r
 162                         if (fd&0x40) d[1]=0xffffffff;\r
 163                         if (fd&0x20) d[2]=0xffffffff;\r
 164                         if (fd&0x10) d[3]=0xffffffff;\r
 165                         if (fd&0x08) d[4]=0xffffffff;\r
 166                         if (fd&0x04) d[5]=0xffffffff;\r
 167                         if (fd&0x02) d[6]=0xffffffff;\r
 168                         if (fd&0x01) d[7]=0xffffffff;\r
 169                         l++;\r
 170                 }\r
 171                 screen += 8;\r
 172         }\r
 173 }\r
 174 \r
 175 \r
 176 void osd_text(int x, int y, const char *text)\r
 177 {\r
 178         int len = strlen(text)*8;\r
 179 \r
 180         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 181                 int *p, i, h;\r
 182                 x &= ~3; // align x\r
 183                 len = (len+3) >> 2;\r
 184                 for (h = 0; h < 8; h++) {\r
 185                         p = (int *) ((unsigned char *) gp2x_screen+x+g_screen_width*(y+h));\r
 186                         for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
 187                 }\r
 188                 emu_textOut8(x, y, text);\r
 189         } else {\r
 190                 int *p, i, h;\r
 191                 x &= ~1; // align x\r
 192                 len++;\r
 193                 for (h = 0; h < 16; h++) {\r
 194                         p = (int *) ((unsigned short *) gp2x_screen+x+g_screen_width*(y+h));\r
 195                         for (i = len; i; i--, p++) *p = 0;//(*p>>2)&0x39e7;\r
 196                 }\r
 197                 textOut16(x, y, text);\r
 198         }\r
 199 }\r
 200 \r
 201 static void draw_cd_leds(void)\r
 202 {\r
 203 //      static\r
 204         int old_reg;\r
 205 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
 206         old_reg = Pico_mcd->s68k_regs[0];\r
 207 \r
 208         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 209                 // 8-bit modes\r
 210                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 211                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 212                 *(unsigned int *)((char *)gp2x_screen + g_screen_width*2+ 4) =\r
 213                 *(unsigned int *)((char *)gp2x_screen + g_screen_width*3+ 4) =\r
 214                 *(unsigned int *)((char *)gp2x_screen + g_screen_width*4+ 4) = col_g;\r
 215                 *(unsigned int *)((char *)gp2x_screen + g_screen_width*2+12) =\r
 216                 *(unsigned int *)((char *)gp2x_screen + g_screen_width*3+12) =\r
 217                 *(unsigned int *)((char *)gp2x_screen + g_screen_width*4+12) = col_r;\r
 218         } else {\r
 219                 // 16-bit modes\r
 220                 unsigned int *p = (unsigned int *)((short *)gp2x_screen + g_screen_width*2+4);\r
 221                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 222                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
 223                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;\r
 224                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;\r
 225                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
 226         }\r
 227 }\r
 228 \r
 229 static void draw_pico_ptr(void)\r
 230 {\r
 231         unsigned short *p = (unsigned short *)gp2x_screen;\r
 232 \r
 233         // only if pen enabled and for 16bit modes\r
 234         if (pico_inp_mode == 0 || (PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) return;\r
 235 \r
 236         if (!(Pico.video.reg[12]&1) && !(PicoOpt&POPT_DIS_32C_BORDER))\r
 237                 p += 32;\r
 238 \r
 239         p += g_screen_width * (pico_pen_y + PICO_PEN_ADJUST_Y);\r
 240         p += pico_pen_x + PICO_PEN_ADJUST_X;\r
 241         p[0]   ^= 0xffff;\r
 242         p[319] ^= 0xffff;\r
 243         p[320] ^= 0xffff;\r
 244         p[321] ^= 0xffff;\r
 245         p[640] ^= 0xffff;\r
 246 }\r
 247 \r
 248 #ifdef USE_320_SCREEN\r
 249 \r
 250 static int EmuScanBegin16(unsigned int num)\r
 251 {\r
 252         if (!(Pico.video.reg[1]&8)) num += 8;\r
 253         DrawLineDest = (unsigned short *)gp2x_screen + num*800 + 800/2 - 320/2;\r
 254         //int w = (Pico.video.reg[12]&1) ? 320 : 256;\r
 255         //DrawLineDest = (unsigned short *)gp2x_screen + num*w;\r
 256 \r
 257         return 0;\r
 258 }\r
 259 \r
 260 #else // USE_320_SCREEN\r
 261 \r
 262 static int EmuScanEnd16(unsigned int num)\r
 263 {\r
 264         unsigned char  *ps=HighCol+8;\r
 265         unsigned short *pd;\r
 266         unsigned short *pal=HighPal;\r
 267         int sh = Pico.video.reg[0xC]&8;\r
 268         int len, mask = 0xff;\r
 269 \r
 270         if (!(Pico.video.reg[1]&8)) num += 8;\r
 271         pd=(unsigned short *)gp2x_screen + num*800*2 + 800/2 - 320*2/2;\r
 272 \r
 273         if (Pico.m.dirtyPal)\r
 274                 PicoDoHighPal555(sh);\r
 275 \r
 276         if (Pico.video.reg[12]&1) {\r
 277                 len = 320;\r
 278         } else {\r
 279                 pd += 32*2;\r
 280                 len = 256;\r
 281         }\r
 282 \r
 283         if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))\r
 284                 mask=0x3f; // messed sprites, upper bits are priority stuff\r
 285 \r
 286 #if 1\r
 287         clut_line(pd, ps, pal, (mask<<16) | len);\r
 288 #else\r
 289         for (; len > 0; len--)\r
 290         {\r
 291                 unsigned int p = pal[*ps++ & mask];\r
 292                 p |= p << 16;\r
 293                 *(unsigned int *)pd = p;\r
 294                 *(unsigned int *)(&pd[800]) = p;\r
 295                 pd += 2;\r
 296         }\r
 297 #endif\r
 298 \r
 299         return 0;\r
 300 }\r
 301 \r
 302 #endif // USE_320_SCREEN\r
 303 \r
 304 static int EmuScanBegin8(unsigned int num)\r
 305 {\r
 306         if (!(Pico.video.reg[1]&8)) num += 8;\r
 307         DrawLineDest = (unsigned char *)  gp2x_screen + g_screen_width * num;\r
 308 \r
 309         return 0;\r
 310 }\r
 311 \r
 312 int localPal[0x100];\r
 313 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 314 \r
 315 static void blit(const char *fps, const char *notice)\r
 316 {\r
 317         int emu_opt = currentConfig.EmuOpt;\r
 318 \r
 319         if (PicoOpt&0x10)\r
 320         {\r
 321                 // 8bit fast renderer\r
 322                 if (Pico.m.dirtyPal) {\r
 323                         Pico.m.dirtyPal = 0;\r
 324                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 325                         // feed new palette to our device\r
 326                         gp2x_video_setpalette(localPal, 0x40);\r
 327                 }\r
 328                 // a hack for VR\r
 329                 if (PicoRead16Hook == PicoSVPRead16)\r
 330                         memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);\r
 331                 // do actual copy\r
 332                 vidCpyM2((unsigned char *)gp2x_screen+g_screen_width*8, PicoDraw2FB+328*8);\r
 333         }\r
 334         else if (!(emu_opt&0x80))\r
 335         {\r
 336                 // 8bit accurate renderer\r
 337                 if (Pico.m.dirtyPal)\r
 338                 {\r
 339                         int pallen = 0xc0;\r
 340                         Pico.m.dirtyPal = 0;\r
 341                         if (Pico.video.reg[0xC]&8) // shadow/hilight mode\r
 342                         {\r
 343                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 344                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 345                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 346                                 memcpy32(localPal+0xc0, localPal+0x40, 0x40);\r
 347                                 pallen = 0x100;\r
 348                         }\r
 349                         else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes\r
 350                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 351                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 352                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 353                                 pallen = 0xc0;\r
 354                         }\r
 355                         else {\r
 356                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 357                                 memcpy32(localPal+0x80, localPal, 0x40);\r
 358                         }\r
 359                         if (pallen > 0xc0) {\r
 360                                 localPal[0xc0] = 0x0000c000;\r
 361                                 localPal[0xd0] = 0x00c00000;\r
 362                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 363                                 localPal[0xf0] = 0x00ffffff;\r
 364                         }\r
 365                         gp2x_video_setpalette(localPal, pallen);\r
 366                 }\r
 367         }\r
 368 \r
 369         if (notice || (emu_opt & 2)) {\r
 370                 int h = g_screen_height-16;\r
 371                 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 16;\r
 372                 if (notice) osd_text(4, h, notice);\r
 373                 if (emu_opt & 2)\r
 374                         osd_text(osd_fps_x, h, fps);\r
 375         }\r
 376         if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))\r
 377                 draw_cd_leds();\r
 378         if (PicoAHW & PAHW_PICO)\r
 379                 draw_pico_ptr();\r
 380 {\r
 381 //static int u=0;\r
 382 //memset((char *)gp2x_screen+800*471*2, (u++)>>1, 800*9*2);\r
 383 }\r
 384 \r
 385         //gp2x_video_wait_vsync();\r
 386         gp2x_video_flip();\r
 387 }\r
 388 \r
 389 \r
 390 // clears whole screen or just the notice area (in all buffers)\r
 391 static void clearArea(int full)\r
 392 {\r
 393         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 394                 // 8-bit renderers\r
 395                 if (full) gp2x_memset_all_buffers(0, 0xe0, g_screen_width*240);\r
 396                 else      gp2x_memset_all_buffers(g_screen_width*232, 0xe0, g_screen_width*8);\r
 397         } else {\r
 398                 // 16bit accurate renderer\r
 399                 if (full) gp2x_memset_all_buffers(0, 0, g_screen_width*g_screen_height*2);\r
 400                 else      gp2x_memset_all_buffers(g_screen_width*(g_screen_height-16)*2, 0, g_screen_width*16*2);\r
 401         }\r
 402 }\r
 403 \r
 404 \r
 405 static void vidResetMode(void)\r
 406 {\r
 407         if (PicoOpt&0x10) {\r
 408                 gp2x_video_changemode(8);\r
 409         } else if (currentConfig.EmuOpt&0x80) {\r
 410                 gp2x_video_changemode(16);\r
 411 #ifdef USE_320_SCREEN\r
 412                 PicoDrawSetColorFormat(1);\r
 413                 PicoScanBegin = EmuScanBegin16;\r
 414 #else\r
 415                 PicoDrawSetColorFormat(-1);\r
 416                 PicoScanEnd = EmuScanEnd16;\r
 417 #endif\r
 418         } else {\r
 419                 gp2x_video_changemode(8);\r
 420                 PicoDrawSetColorFormat(2);\r
 421                 PicoScanBegin = EmuScanBegin8;\r
 422         }\r
 423         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 424                 // setup pal for 8-bit modes\r
 425                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 426                 localPal[0xd0] = 0x00c00000;\r
 427                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 428                 localPal[0xf0] = 0x00ffffff;\r
 429                 gp2x_video_setpalette(localPal, 0x100);\r
 430                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 431                 gp2x_video_flip();\r
 432         }\r
 433         Pico.m.dirtyPal = 1;\r
 434         // reset scaling\r
 435         if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
 436              gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
 437         else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 438 }\r
 439 \r
 440 \r
 441 static void emu_msg_cb(const char *msg)\r
 442 {\r
 443         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 444                 // 8-bit renderers\r
 445                 gp2x_memset_all_buffers(g_screen_width*(g_screen_height-16), 0xe0, g_screen_width*16);\r
 446                 osd_text(4, g_screen_height-16, msg);\r
 447                 gp2x_memcpy_all_buffers((char *)gp2x_screen+g_screen_width*(g_screen_height-16),\r
 448                         g_screen_width*(g_screen_height-16), g_screen_width*16);\r
 449         } else {\r
 450                 // 16bit accurate renderer\r
 451                 gp2x_memset_all_buffers(g_screen_width*(g_screen_height-16)*2, 0, g_screen_width*16*2);\r
 452                 osd_text(4, g_screen_height-16, msg);\r
 453                 gp2x_memcpy_all_buffers((char *)gp2x_screen+g_screen_width*(g_screen_height-16)*2,\r
 454                         g_screen_width*(g_screen_height-16)*2, g_screen_width*16*2);\r
 455         }\r
 456         gettimeofday(&noticeMsgTime, 0);\r
 457         noticeMsgTime.tv_sec -= 2;\r
 458 \r
 459         /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
 460         reset_timing = 1;\r
 461 }\r
 462 \r
 463 static void emu_state_cb(const char *str)\r
 464 {\r
 465         clearArea(0);\r
 466         blit("", str);\r
 467 }\r
 468 \r
 469 static void emu_msg_tray_open(void)\r
 470 {\r
 471         strcpy(noticeMsg, "CD tray opened");\r
 472         gettimeofday(&noticeMsgTime, 0);\r
 473 }\r
 474 \r
 475 #if 0\r
 476 static void RunEventsPico(unsigned int events, unsigned int gp2x_keys)\r
 477 {\r
 478         int ret, px, py, lim_x;\r
 479         static int pdown_frames = 0;\r
 480 \r
 481         emu_RunEventsPico(events);\r
 482 \r
 483         if (pico_inp_mode == 0) return;\r
 484 \r
 485         // for F200\r
 486         ret = gp2x_touchpad_read(&px, &py);\r
 487         if (ret >= 0)\r
 488         {\r
 489                 if (ret > 35000)\r
 490                 {\r
 491                         if (pdown_frames++ > 5)\r
 492                                 PicoPad[0] |= 0x20;\r
 493 \r
 494                         pico_pen_x = px;\r
 495                         pico_pen_y = py;\r
 496                         if (!(Pico.video.reg[12]&1)) {\r
 497                                 pico_pen_x -= 32;\r
 498                                 if (pico_pen_x <   0) pico_pen_x = 0;\r
 499                                 if (pico_pen_x > 248) pico_pen_x = 248;\r
 500                         }\r
 501                         if (pico_pen_y > 224) pico_pen_y = 224;\r
 502                 }\r
 503                 else\r
 504                         pdown_frames = 0;\r
 505 \r
 506                 //if (ret == 0)\r
 507                 //      PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
 508         }\r
 509 \r
 510         PicoPad[0] &= ~0x0f; // release UDLR\r
 511         if (gp2x_keys & GP2X_UP)    pico_pen_y--;\r
 512         if (gp2x_keys & GP2X_DOWN)  pico_pen_y++;\r
 513         if (gp2x_keys & GP2X_LEFT)  pico_pen_x--;\r
 514         if (gp2x_keys & GP2X_RIGHT) pico_pen_x++;\r
 515 \r
 516         lim_x = (Pico.video.reg[12]&1) ? 319 : 255;\r
 517         if (pico_pen_y < 8) pico_pen_y = 8;\r
 518         if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y;\r
 519         if (pico_pen_x < 0) pico_pen_x = 0;\r
 520         if (pico_pen_x > lim_x-PICO_PEN_ADJUST_X) pico_pen_x = lim_x-PICO_PEN_ADJUST_X;\r
 521 \r
 522         PicoPicohw.pen_pos[0] = pico_pen_x;\r
 523         if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;\r
 524         PicoPicohw.pen_pos[0] += 0x3c;\r
 525         PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
 526 }\r
 527 #endif\r
 528 \r
 529 static void update_volume(int has_changed, int is_up)\r
 530 {\r
 531         static int prev_frame = 0, wait_frames = 0;\r
 532         int vol = currentConfig.volume;\r
 533 \r
 534         if (has_changed)\r
 535         {\r
 536                 if (vol < 5 && (PicoOpt&8) && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
 537                         wait_frames++;\r
 538                 else {\r
 539                         if (is_up) {\r
 540                                 if (vol < 99) vol++;\r
 541                         } else {\r
 542                                 if (vol >  0) vol--;\r
 543                         }\r
 544                         wait_frames = 0;\r
 545                         sndout_oss_setvol(vol, vol);\r
 546                         currentConfig.volume = vol;\r
 547                 }\r
 548                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 549                 gettimeofday(&noticeMsgTime, 0);\r
 550                 prev_frame = Pico.m.frame_count;\r
 551         }\r
 552 \r
 553         // set the right mixer func\r
 554         if (!(PicoOpt&8)) return; // just use defaults for mono\r
 555         if (vol >= 5)\r
 556                 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
 557         else {\r
 558                 mix_32_to_16l_level = 5 - vol;\r
 559                 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
 560         }\r
 561 }\r
 562 \r
 563 static void RunEvents(unsigned int which)\r
 564 {\r
 565         if (which & 0x1800) // save or load (but not both)\r
 566         {\r
 567                 int do_it = 1;\r
 568                 if ( emu_checkSaveFile(state_slot) &&\r
 569                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) ||   // load\r
 570                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
 571 #if 0\r
 572                         unsigned long keys;\r
 573                         blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
 574                         while ( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 575                                 usleep(50*1024);\r
 576                         if (keys & GP2X_X) do_it = 0;\r
 577                         while ( gp2x_joystick_read(1) & (GP2X_X|GP2X_Y) ) // wait for release\r
 578                                 usleep(50*1024);\r
 579                         clearArea(0);\r
 580 #endif\r
 581                 }\r
 582                 if (do_it) {\r
 583                         osd_text(4, g_screen_height-16, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 584                         PicoStateProgressCB = emu_state_cb;\r
 585                         gp2x_memcpy_all_buffers(gp2x_screen, 0, g_screen_width*g_screen_height*2);\r
 586                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
 587                         PicoStateProgressCB = NULL;\r
 588                 }\r
 589 \r
 590                 reset_timing = 1;\r
 591         }\r
 592         if (which & 0x0400) // switch renderer\r
 593         {\r
 594                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 595                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 596                 else   currentConfig.EmuOpt &= ~0x80;\r
 597 \r
 598                 vidResetMode();\r
 599 \r
 600                 if (PicoOpt&0x10) {\r
 601                         strcpy(noticeMsg, " 8bit fast renderer");\r
 602                 } else if (currentConfig.EmuOpt&0x80) {\r
 603                         strcpy(noticeMsg, "16bit accurate renderer");\r
 604                 } else {\r
 605                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 606                 }\r
 607 \r
 608                 gettimeofday(&noticeMsgTime, 0);\r
 609         }\r
 610         if (which & 0x0300)\r
 611         {\r
 612                 if(which&0x0200) {\r
 613                         state_slot -= 1;\r
 614                         if(state_slot < 0) state_slot = 9;\r
 615                 } else {\r
 616                         state_slot += 1;\r
 617                         if(state_slot > 9) state_slot = 0;\r
 618                 }\r
 619                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
 620                 gettimeofday(&noticeMsgTime, 0);\r
 621         }\r
 622         if (which & 0x0080) {\r
 623                 engineState = PGS_Menu;\r
 624         }\r
 625 }\r
 626 \r
 627 static void updateKeys(void)\r
 628 {\r
 629         unsigned int allActions[2] = { 0, 0 }, events;\r
 630         static unsigned int prevEvents = 0;\r
 631 \r
 632         /* FIXME: combos, player2 */\r
 633         allActions[0] = in_update();\r
 634 \r
 635         PicoPad[0] = allActions[0] & 0xfff;\r
 636         PicoPad[1] = allActions[1] & 0xfff;\r
 637 \r
 638         if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);\r
 639         if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);\r
 640 \r
 641         events = (allActions[0] | allActions[1]) >> 16;\r
 642 \r
 643         // volume is treated in special way and triggered every frame\r
 644         if (events & 0x6000)\r
 645                 update_volume(1, events & 0x2000);\r
 646 \r
 647         if ((events ^ prevEvents) & 0x40) {\r
 648                 emu_changeFastForward(events & 0x40);\r
 649                 update_volume(0, 0);\r
 650                 reset_timing = 1;\r
 651         }\r
 652 \r
 653         events &= ~prevEvents;\r
 654 \r
 655 /*\r
 656         if (PicoAHW == PAHW_PICO)\r
 657                 RunEventsPico(events, keys);\r
 658 */\r
 659         if (events) RunEvents(events);\r
 660         if (movie_data) emu_updateMovie();\r
 661 \r
 662         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 663 }\r
 664 \r
 665 \r
 666 static void updateSound(int len)\r
 667 {\r
 668         if (PicoOpt&8) len<<=1;\r
 669 \r
 670         /* avoid writing audio when lagging behind to prevent audio lag */\r
 671         if (PicoSkipFrame != 2)\r
 672                 sndout_oss_write(PsndOut, len<<1);\r
 673 }\r
 674 \r
 675 \r
 676 static void SkipFrame(int do_audio)\r
 677 {\r
 678         PicoSkipFrame=do_audio ? 1 : 2;\r
 679         PicoFrame();\r
 680         PicoSkipFrame=0;\r
 681 }\r
 682 \r
 683 \r
 684 void emu_forcedFrame(int opts)\r
 685 {\r
 686         int po_old = PicoOpt;\r
 687         int eo_old = currentConfig.EmuOpt;\r
 688 \r
 689         PicoOpt &= ~0x10;\r
 690         PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
 691         currentConfig.EmuOpt |= 0x80;\r
 692 \r
 693         //vidResetMode();\r
 694 #ifdef USE_320_SCREEN\r
 695         PicoDrawSetColorFormat(1);\r
 696         PicoScanBegin = EmuScanBegin16;\r
 697 #else\r
 698         PicoDrawSetColorFormat(-1);\r
 699         PicoScanEnd = EmuScanEnd16;\r
 700 #endif\r
 701         Pico.m.dirtyPal = 1;\r
 702         PicoFrameDrawOnly();\r
 703 \r
 704 /*\r
 705         if (!(Pico.video.reg[12]&1)) {\r
 706                 vidCpyM2 = vidCpyM2_32col;\r
 707                 clearArea(1);\r
 708         } else  vidCpyM2 = vidCpyM2_40col;\r
 709 \r
 710         vidCpyM2((unsigned char *)gp2x_screen+g_screen_width*8, PicoDraw2FB+328*8);\r
 711         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 712         gp2x_video_setpalette(localPal, 0x40);\r
 713 */\r
 714         PicoOpt = po_old;\r
 715         currentConfig.EmuOpt = eo_old;\r
 716 }\r
 717 \r
 718 void emu_platformDebugCat(char *str)\r
 719 {\r
 720         // nothing\r
 721 }\r
 722 \r
 723 static void simpleWait(int thissec, int lim_time)\r
 724 {\r
 725         struct timeval tval;\r
 726 \r
 727         spend_cycles(1024);\r
 728         gettimeofday(&tval, 0);\r
 729         if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 730 \r
 731         while (tval.tv_usec < lim_time)\r
 732         {\r
 733                 spend_cycles(1024);\r
 734                 gettimeofday(&tval, 0);\r
 735                 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 736         }\r
 737 }\r
 738 \r
 739 void emu_startSound(void)\r
 740 {\r
 741         static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;\r
 742         int target_fps = Pico.m.pal ? 50 : 60;\r
 743 \r
 744         PsndOut = NULL;\r
 745 \r
 746         if (currentConfig.EmuOpt & 4)\r
 747         {\r
 748                 int snd_excess_add;\r
 749                 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old)\r
 750                         PsndRerate(Pico.m.frame_count ? 1 : 0);\r
 751 \r
 752                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
 753                 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
 754                         PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
 755                 sndout_oss_start(PsndRate, 16, (PicoOpt&8)>>3);\r
 756                 sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r
 757                 PicoWriteSound = updateSound;\r
 758                 update_volume(0, 0);\r
 759                 memset(sndBuffer, 0, sizeof(sndBuffer));\r
 760                 PsndOut = sndBuffer;\r
 761                 PsndRate_old = PsndRate;\r
 762                 PicoOpt_old  = PicoOpt;\r
 763                 pal_old = Pico.m.pal;\r
 764         }\r
 765 }\r
 766 \r
 767 void emu_endSound(void)\r
 768 {\r
 769 }\r
 770 \r
 771 /* wait until we can write more sound */\r
 772 void emu_waitSound(void)\r
 773 {\r
 774         // don't need to do anything, writes will block by themselves\r
 775 }\r
 776 \r
 777 void emu_Loop(void)\r
 778 {\r
 779         char fpsbuff[24]; // fps count c string\r
 780         struct timeval tval; // timing\r
 781         int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
 782         int  frames_done,  frames_shown,  thissec; // actual frames\r
 783         int oldmodes = 0, target_fps, target_frametime, lim_time, vsync_offset, i;\r
 784         char *notice = 0;\r
 785 \r
 786         printf("entered emu_Loop()\n");\r
 787 \r
 788         fpsbuff[0] = 0;\r
 789 \r
 790         // make sure we are in correct mode\r
 791         vidResetMode();\r
 792         Pico.m.dirtyPal = 1;\r
 793         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
 794         emu_findKeyBindCombos();\r
 795 \r
 796         // pal/ntsc might have changed, reset related stuff\r
 797         target_fps = Pico.m.pal ? 50 : 60;\r
 798         target_frametime = 1000000/target_fps;\r
 799         reset_timing = 1;\r
 800 \r
 801         emu_startSound();\r
 802 \r
 803         // prepare CD buffer\r
 804         if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r
 805 \r
 806         // calc vsync offset to sync timing code with vsync\r
 807         if (currentConfig.EmuOpt&0x2000) {\r
 808                 gettimeofday(&tval, 0);\r
 809                 gp2x_video_wait_vsync();\r
 810                 gettimeofday(&tval, 0);\r
 811                 vsync_offset = tval.tv_usec;\r
 812                 while (vsync_offset >= target_frametime)\r
 813                         vsync_offset -= target_frametime;\r
 814                 if (!vsync_offset) vsync_offset++;\r
 815                 printf("vsync_offset: %i\n", vsync_offset);\r
 816         } else\r
 817                 vsync_offset = 0;\r
 818 \r
 819         frames_done = frames_shown = thissec =\r
 820         pframes_done = pframes_shown = pthissec = 0;\r
 821 \r
 822         // loop\r
 823         while (engineState == PGS_Running)\r
 824         {\r
 825                 int modes;\r
 826 \r
 827                 gettimeofday(&tval, 0);\r
 828                 if (reset_timing) {\r
 829                         reset_timing = 0;\r
 830                         pthissec = tval.tv_sec;\r
 831                         pframes_shown = pframes_done = tval.tv_usec/target_frametime;\r
 832                 }\r
 833 \r
 834                 // show notice message?\r
 835                 if (noticeMsgTime.tv_sec)\r
 836                 {\r
 837                         static int noticeMsgSum;\r
 838                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
 839                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
 840                                 clearArea(0);\r
 841                                 notice = 0;\r
 842                         } else {\r
 843                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
 844                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
 845                                 notice = noticeMsg;\r
 846                         }\r
 847                 }\r
 848 \r
 849                 // check for mode changes\r
 850                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
 851                 if (modes != oldmodes)\r
 852                 {\r
 853                         int scalex = g_screen_width;\r
 854                         osd_fps_x = OSD_FPS_X;\r
 855                         if (modes & 4) {\r
 856                                 vidCpyM2 = vidCpyM2_40col;\r
 857                         } else {\r
 858                                 if (PicoOpt & 0x100) {\r
 859                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
 860                                         scalex = 256;\r
 861                                         osd_fps_x = OSD_FPS_X - 64;\r
 862                                 } else {\r
 863                                         vidCpyM2 = vidCpyM2_32col;\r
 864                                 }\r
 865                         }\r
 866                         if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
 867                              gp2x_video_RGB_setscaling(8, scalex, 224);\r
 868                         else gp2x_video_RGB_setscaling(0, scalex, 240);\r
 869                         oldmodes = modes;\r
 870                         clearArea(1);\r
 871                 }\r
 872 \r
 873                 // second changed?\r
 874                 if (thissec != tval.tv_sec)\r
 875                 {\r
 876 #ifdef BENCHMARK\r
 877                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
 878                         if (++bench == 4) {\r
 879                                 bench = 0;\r
 880                                 bench_fps_s = bench_fps / 4;\r
 881                                 bf[bfp++ & 3] = bench_fps / 4;\r
 882                                 bench_fps = 0;\r
 883                         }\r
 884                         bench_fps += frames_shown;\r
 885                         sprintf(fpsbuff, "%3i/%3i/%3i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
 886                         printf("%s\n", fpsbuff);\r
 887 #else\r
 888                         if (currentConfig.EmuOpt & 2) {\r
 889                                 sprintf(fpsbuff, "%3i/%3i", frames_shown, frames_done);\r
 890                                 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
 891                         }\r
 892 #endif\r
 893                         frames_shown = frames_done = 0;\r
 894                         thissec = tval.tv_sec;\r
 895                 }\r
 896 #ifdef PFRAMES\r
 897                 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
 898 #endif\r
 899 \r
 900                 if (pthissec != tval.tv_sec)\r
 901                 {\r
 902                         if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
 903                                 pframes_done = pframes_shown = 0;\r
 904                         } else {\r
 905                                 // it is quite common for this implementation to leave 1 fame unfinished\r
 906                                 // when second changes, but we don't want buffer to starve.\r
 907                                 if(PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {\r
 908                                         updateKeys();\r
 909                                         SkipFrame(1); pframes_done++;\r
 910                                 }\r
 911 \r
 912                                 pframes_done  -= target_fps; if (pframes_done  < 0) pframes_done  = 0;\r
 913                                 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;\r
 914                                 if (pframes_shown > pframes_done) pframes_shown = pframes_done;\r
 915                         }\r
 916                         pthissec = tval.tv_sec;\r
 917                 }\r
 918 \r
 919                 lim_time = (pframes_done+1) * target_frametime + vsync_offset;\r
 920                 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
 921                 {\r
 922                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
 923                                 updateKeys();\r
 924                                 SkipFrame(1); pframes_done++; frames_done++;\r
 925                                 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
 926                                         gettimeofday(&tval, 0);\r
 927                                         if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 928                                         if (tval.tv_usec < lim_time) { // we are too fast\r
 929                                                 simpleWait(pthissec, lim_time);\r
 930                                         }\r
 931                                 }\r
 932                                 lim_time += target_frametime;\r
 933                         }\r
 934                 }\r
 935                 else if (tval.tv_usec > lim_time) // auto frameskip\r
 936                 {\r
 937                         // no time left for this frame - skip\r
 938                         if (tval.tv_usec - lim_time >= 300000) {\r
 939                                 /* something caused a slowdown for us (disk access? cache flush?)\r
 940                                  * try to recover by resetting timing... */\r
 941                                 reset_timing = 1;\r
 942                                 continue;\r
 943                         }\r
 944                         updateKeys();\r
 945                         SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;\r
 946                         continue;\r
 947                 }\r
 948 \r
 949                 updateKeys();\r
 950                 PicoFrame();\r
 951 \r
 952                 // check time\r
 953                 gettimeofday(&tval, 0);\r
 954                 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 955 \r
 956                 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
 957                         reset_timing = 1;\r
 958 #if 1\r
 959                 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
 960                 {\r
 961                         // sleep or vsync if we are still too fast\r
 962                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
 963                         if (!reset_timing && tval.tv_usec < lim_time)\r
 964                         {\r
 965                                 // we are too fast\r
 966                                 if (vsync_offset) {\r
 967                                         if (lim_time - tval.tv_usec > target_frametime/2)\r
 968                                                 simpleWait(pthissec, lim_time - target_frametime/4);\r
 969                                         gp2x_video_wait_vsync();\r
 970                                 } else {\r
 971                                         simpleWait(pthissec, lim_time);\r
 972                                 }\r
 973                         }\r
 974                 }\r
 975 #endif\r
 976                 blit(fpsbuff, notice);\r
 977 \r
 978                 pframes_done++; pframes_shown++;\r
 979                  frames_done++;  frames_shown++;\r
 980         }\r
 981 \r
 982         emu_changeFastForward(0);\r
 983 \r
 984         if (PicoAHW & PAHW_MCD) PicoCDBufferFree();\r
 985 \r
 986         // save SRAM\r
 987         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 988                 emu_state_cb("Writing SRAM/BRAM..");\r
 989                 emu_SaveLoadGame(0, 1);\r
 990                 SRam.changed = 0;\r
 991         }\r
 992 \r
 993         // if in 8bit mode, generate 16bit image for menu background\r
 994         if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
 995                 emu_forcedFrame(POPT_EN_SOFTSCALE);\r
 996 }\r
 997 \r
 998 \r
 999 void emu_ResetGame(void)\r
1000 {\r
1001         PicoReset();\r
1002         reset_timing = 1;\r
1003 }\r
1004 \r