platform/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 engineState;\r
  46 int select_exits = 0;\r
  47 \r
  48 char romFileName[PATH_MAX];\r
  49 \r
  50 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
  51 static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
  52 static int osd_fps_x;\r
  53 unsigned char *PicoDraw2FB = NULL;  // temporary buffer for alt renderer\r
  54 int reset_timing = 0;\r
  55 \r
  56 #define PICO_PEN_ADJUST_X 4\r
  57 #define PICO_PEN_ADJUST_Y 2\r
  58 static int pico_pen_x = SCREEN_WIDTH/2, pico_pen_y = 240/2;\r
  59 \r
  60 static void emu_msg_cb(const char *msg);\r
  61 static void emu_msg_tray_open(void);\r
  62 \r
  63 \r
  64 void emu_noticeMsgUpdated(void)\r
  65 {\r
  66         gettimeofday(&noticeMsgTime, 0);\r
  67 }\r
  68 \r
  69 int emu_getMainDir(char *dst, int len)\r
  70 {\r
  71         extern char **g_argv;\r
  72         int j;\r
  73 \r
  74         strncpy(dst, g_argv[0], len);\r
  75         len -= 32; // reserve\r
  76         if (len < 0) len = 0;\r
  77         dst[len] = 0;\r
  78         for (j = strlen(dst); j > 0; j--)\r
  79                 if (dst[j] == '/') { dst[j+1] = 0; break; }\r
  80 \r
  81         return j + 1;\r
  82 }\r
  83 \r
  84 void emu_Init(void)\r
  85 {\r
  86         // make temp buffer for alt renderer\r
  87         PicoDraw2FB = malloc((8+320)*(8+240+8));\r
  88         if (!PicoDraw2FB)\r
  89         {\r
  90                 printf("PicoDraw2FB == 0\n");\r
  91         }\r
  92 \r
  93         // make dirs for saves, cfgs, etc.\r
  94         mkdir("mds", 0777);\r
  95         mkdir("srm", 0777);\r
  96         mkdir("brm", 0777);\r
  97         mkdir("cfg", 0777);\r
  98 \r
  99         PicoInit();\r
 100         PicoMessage = emu_msg_cb;\r
 101         PicoMCDopenTray = emu_msg_tray_open;\r
 102         PicoMCDcloseTray = menu_loop_tray;\r
 103 }\r
 104 \r
 105 \r
 106 void emu_Deinit(void)\r
 107 {\r
 108         // save SRAM\r
 109         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 110                 emu_SaveLoadGame(0, 1);\r
 111                 SRam.changed = 0;\r
 112         }\r
 113 \r
 114         if (!(currentConfig.EmuOpt & 0x20)) {\r
 115                 config_writelrom(PicoConfigFile);\r
 116 #ifndef NO_SYNC\r
 117                 sync();\r
 118 #endif\r
 119         }\r
 120 \r
 121         free(PicoDraw2FB);\r
 122 \r
 123         PicoExit();\r
 124 }\r
 125 \r
 126 void emu_prepareDefaultConfig(void)\r
 127 {\r
 128         memset(&defaultConfig, 0, sizeof(defaultConfig));\r
 129         defaultConfig.EmuOpt    = 0x8f | 0x00600; // | <- confirm_save, cd_leds\r
 130         defaultConfig.s_PicoOpt  = 0x0f | POPT_EXT_FM|POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC;\r
 131         defaultConfig.s_PicoOpt |= POPT_ACC_SPRITES|POPT_EN_MCD_GFX;\r
 132 //      defaultConfig.s_PicoOpt &= ~POPT_EN_SVP_DRC; // crashes :(\r
 133         defaultConfig.EmuOpt    &= ~8; // no save gzip\r
 134         defaultConfig.s_PsndRate = 44100;\r
 135         defaultConfig.s_PicoRegion = 0;\r
 136         defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
 137         defaultConfig.s_PicoCDBuffers = 0;\r
 138         defaultConfig.Frameskip = 0;\r
 139         defaultConfig.CPUclock = 200;\r
 140         defaultConfig.volume = 50;\r
 141         defaultConfig.scaling = 0;\r
 142         defaultConfig.turbo_rate = 15;\r
 143 }\r
 144 \r
 145 static void textOut16(int x, int y, const char *text)\r
 146 {\r
 147         int i,l,len=strlen(text);\r
 148         unsigned int *screen = (unsigned int *)((unsigned short *)SCREEN_BUFFER + (x&~1) + y*SCREEN_WIDTH);\r
 149 \r
 150         for (i = 0; i < len; i++)\r
 151         {\r
 152                 for (l=0;l<16;)\r
 153                 {\r
 154                         unsigned char fd = fontdata8x8[((text[i])*8)+l/2];\r
 155                         unsigned int *d = &screen[l*SCREEN_WIDTH/2];\r
 156                         if (fd&0x80) d[0]=0xffffffff;\r
 157                         if (fd&0x40) d[1]=0xffffffff;\r
 158                         if (fd&0x20) d[2]=0xffffffff;\r
 159                         if (fd&0x10) d[3]=0xffffffff;\r
 160                         if (fd&0x08) d[4]=0xffffffff;\r
 161                         if (fd&0x04) d[5]=0xffffffff;\r
 162                         if (fd&0x02) d[6]=0xffffffff;\r
 163                         if (fd&0x01) d[7]=0xffffffff;\r
 164                         l++; d = &screen[l*SCREEN_WIDTH/2];\r
 165                         if (fd&0x80) d[0]=0xffffffff;\r
 166                         if (fd&0x40) d[1]=0xffffffff;\r
 167                         if (fd&0x20) d[2]=0xffffffff;\r
 168                         if (fd&0x10) d[3]=0xffffffff;\r
 169                         if (fd&0x08) d[4]=0xffffffff;\r
 170                         if (fd&0x04) d[5]=0xffffffff;\r
 171                         if (fd&0x02) d[6]=0xffffffff;\r
 172                         if (fd&0x01) d[7]=0xffffffff;\r
 173                         l++;\r
 174                 }\r
 175                 screen += 8;\r
 176         }\r
 177 }\r
 178 \r
 179 \r
 180 void osd_text(int x, int y, const char *text)\r
 181 {\r
 182         int len = strlen(text)*8;\r
 183 \r
 184         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 185                 int *p, i, h;\r
 186                 x &= ~3; // align x\r
 187                 len = (len+3) >> 2;\r
 188                 for (h = 0; h < 8; h++) {\r
 189                         p = (int *) ((unsigned char *) gp2x_screen+x+SCREEN_WIDTH*(y+h));\r
 190                         for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
 191                 }\r
 192                 emu_textOut8(x, y, text);\r
 193         } else {\r
 194                 int *p, i, h;\r
 195                 x &= ~1; // align x\r
 196                 len++;\r
 197                 for (h = 0; h < 16; h++) {\r
 198                         p = (int *) ((unsigned short *) gp2x_screen+x+SCREEN_WIDTH*(y+h));\r
 199                         for (i = len; i; i--, p++) *p = 0;//(*p>>2)&0x39e7;\r
 200                 }\r
 201                 textOut16(x, y, text);\r
 202         }\r
 203 }\r
 204 \r
 205 static void draw_cd_leds(void)\r
 206 {\r
 207 //      static\r
 208         int old_reg;\r
 209 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
 210         old_reg = Pico_mcd->s68k_regs[0];\r
 211 \r
 212         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 213                 // 8-bit modes\r
 214                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 215                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 216                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*2+ 4) =\r
 217                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*3+ 4) =\r
 218                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*4+ 4) = col_g;\r
 219                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*2+12) =\r
 220                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*3+12) =\r
 221                 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*4+12) = col_r;\r
 222         } else {\r
 223                 // 16-bit modes\r
 224                 unsigned int *p = (unsigned int *)((short *)gp2x_screen + SCREEN_WIDTH*2+4);\r
 225                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 226                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
 227                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += SCREEN_WIDTH/2 - 12/2;\r
 228                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += SCREEN_WIDTH/2 - 12/2;\r
 229                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
 230         }\r
 231 }\r
 232 \r
 233 static void draw_pico_ptr(void)\r
 234 {\r
 235         unsigned short *p = (unsigned short *)gp2x_screen;\r
 236 \r
 237         // only if pen enabled and for 16bit modes\r
 238         if (pico_inp_mode == 0 || (PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) return;\r
 239 \r
 240         if (!(Pico.video.reg[12]&1) && !(PicoOpt&POPT_DIS_32C_BORDER))\r
 241                 p += 32;\r
 242 \r
 243         p += SCREEN_WIDTH * (pico_pen_y + PICO_PEN_ADJUST_Y);\r
 244         p += pico_pen_x + PICO_PEN_ADJUST_X;\r
 245         p[0]   ^= 0xffff;\r
 246         p[319] ^= 0xffff;\r
 247         p[320] ^= 0xffff;\r
 248         p[321] ^= 0xffff;\r
 249         p[640] ^= 0xffff;\r
 250 }\r
 251 \r
 252 #ifdef USE_320_SCREEN\r
 253 \r
 254 static int EmuScanBegin16(unsigned int num)\r
 255 {\r
 256         if (!(Pico.video.reg[1]&8)) num += 8;\r
 257         DrawLineDest = (unsigned short *)gp2x_screen + num*800 + 800/2 - 320/2;\r
 258         //int w = (Pico.video.reg[12]&1) ? 320 : 256;\r
 259         //DrawLineDest = (unsigned short *)gp2x_screen + num*w;\r
 260 \r
 261         return 0;\r
 262 }\r
 263 \r
 264 #else // USE_320_SCREEN\r
 265 \r
 266 static int EmuScanEnd16(unsigned int num)\r
 267 {\r
 268         unsigned char  *ps=HighCol+8;\r
 269         unsigned short *pd;\r
 270         unsigned short *pal=HighPal;\r
 271         int sh = Pico.video.reg[0xC]&8;\r
 272         int len, mask = 0xff;\r
 273 \r
 274         if (!(Pico.video.reg[1]&8)) num += 8;\r
 275         pd=(unsigned short *)gp2x_screen + num*800*2 + 800/2 - 320*2/2;\r
 276 \r
 277         if (Pico.m.dirtyPal)\r
 278                 PicoDoHighPal555(sh);\r
 279 \r
 280         if (Pico.video.reg[12]&1) {\r
 281                 len = 320;\r
 282         } else {\r
 283                 pd += 32*2;\r
 284                 len = 256;\r
 285         }\r
 286 \r
 287         if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))\r
 288                 mask=0x3f; // messed sprites, upper bits are priority stuff\r
 289 \r
 290 #if 1\r
 291         clut_line(pd, ps, pal, (mask<<16) | len);\r
 292 #else\r
 293         for (; len > 0; len--)\r
 294         {\r
 295                 unsigned int p = pal[*ps++ & mask];\r
 296                 p |= p << 16;\r
 297                 *(unsigned int *)pd = p;\r
 298                 *(unsigned int *)(&pd[800]) = p;\r
 299                 pd += 2;\r
 300         }\r
 301 #endif\r
 302 \r
 303         return 0;\r
 304 }\r
 305 \r
 306 #endif // USE_320_SCREEN\r
 307 \r
 308 static int EmuScanBegin8(unsigned int num)\r
 309 {\r
 310         if (!(Pico.video.reg[1]&8)) num += 8;\r
 311         DrawLineDest = (unsigned char *)  gp2x_screen + SCREEN_WIDTH * num;\r
 312 \r
 313         return 0;\r
 314 }\r
 315 \r
 316 int localPal[0x100];\r
 317 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 318 \r
 319 static void blit(const char *fps, const char *notice)\r
 320 {\r
 321         int emu_opt = currentConfig.EmuOpt;\r
 322 \r
 323         if (PicoOpt&0x10)\r
 324         {\r
 325                 // 8bit fast renderer\r
 326                 if (Pico.m.dirtyPal) {\r
 327                         Pico.m.dirtyPal = 0;\r
 328                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 329                         // feed new palette to our device\r
 330                         gp2x_video_setpalette(localPal, 0x40);\r
 331                 }\r
 332                 // a hack for VR\r
 333                 if (PicoRead16Hook == PicoSVPRead16)\r
 334                         memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);\r
 335                 // do actual copy\r
 336                 vidCpyM2((unsigned char *)gp2x_screen+SCREEN_WIDTH*8, PicoDraw2FB+328*8);\r
 337         }\r
 338         else if (!(emu_opt&0x80))\r
 339         {\r
 340                 // 8bit accurate renderer\r
 341                 if (Pico.m.dirtyPal)\r
 342                 {\r
 343                         int pallen = 0xc0;\r
 344                         Pico.m.dirtyPal = 0;\r
 345                         if (Pico.video.reg[0xC]&8) // shadow/hilight mode\r
 346                         {\r
 347                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 348                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 349                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 350                                 memcpy32(localPal+0xc0, localPal+0x40, 0x40);\r
 351                                 pallen = 0x100;\r
 352                         }\r
 353                         else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes\r
 354                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 355                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 356                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 357                                 pallen = 0xc0;\r
 358                         }\r
 359                         else {\r
 360                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 361                                 memcpy32(localPal+0x80, localPal, 0x40);\r
 362                         }\r
 363                         if (pallen > 0xc0) {\r
 364                                 localPal[0xc0] = 0x0000c000;\r
 365                                 localPal[0xd0] = 0x00c00000;\r
 366                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 367                                 localPal[0xf0] = 0x00ffffff;\r
 368                         }\r
 369                         gp2x_video_setpalette(localPal, pallen);\r
 370                 }\r
 371         }\r
 372 \r
 373         if (notice || (emu_opt & 2)) {\r
 374                 int h = SCREEN_HEIGHT-16;\r
 375                 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 16;\r
 376                 if (notice) osd_text(4, h, notice);\r
 377                 if (emu_opt & 2)\r
 378                         osd_text(osd_fps_x, h, fps);\r
 379         }\r
 380         if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))\r
 381                 draw_cd_leds();\r
 382         if (PicoAHW & PAHW_PICO)\r
 383                 draw_pico_ptr();\r
 384 {\r
 385 //static int u=0;\r
 386 //memset((char *)gp2x_screen+800*471*2, (u++)>>1, 800*9*2);\r
 387 }\r
 388 \r
 389         //gp2x_video_wait_vsync();\r
 390         gp2x_video_flip();\r
 391 }\r
 392 \r
 393 \r
 394 // clears whole screen or just the notice area (in all buffers)\r
 395 static void clearArea(int full)\r
 396 {\r
 397         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 398                 // 8-bit renderers\r
 399                 if (full) gp2x_memset_all_buffers(0, 0xe0, SCREEN_WIDTH*240);\r
 400                 else      gp2x_memset_all_buffers(SCREEN_WIDTH*232, 0xe0, SCREEN_WIDTH*8);\r
 401         } else {\r
 402                 // 16bit accurate renderer\r
 403                 if (full) gp2x_memset_all_buffers(0, 0, SCREEN_WIDTH*SCREEN_HEIGHT*2);\r
 404                 else      gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, 0, SCREEN_WIDTH*16*2);\r
 405         }\r
 406 }\r
 407 \r
 408 \r
 409 static void vidResetMode(void)\r
 410 {\r
 411         if (PicoOpt&0x10) {\r
 412                 gp2x_video_changemode(8);\r
 413         } else if (currentConfig.EmuOpt&0x80) {\r
 414                 gp2x_video_changemode(16);\r
 415 #ifdef USE_320_SCREEN\r
 416                 PicoDrawSetColorFormat(1);\r
 417                 PicoScanBegin = EmuScanBegin16;\r
 418 #else\r
 419                 PicoDrawSetColorFormat(-1);\r
 420                 PicoScanEnd = EmuScanEnd16;\r
 421 #endif\r
 422         } else {\r
 423                 gp2x_video_changemode(8);\r
 424                 PicoDrawSetColorFormat(2);\r
 425                 PicoScanBegin = EmuScanBegin8;\r
 426         }\r
 427         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 428                 // setup pal for 8-bit modes\r
 429                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 430                 localPal[0xd0] = 0x00c00000;\r
 431                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 432                 localPal[0xf0] = 0x00ffffff;\r
 433                 gp2x_video_setpalette(localPal, 0x100);\r
 434                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 435                 gp2x_video_flip();\r
 436         }\r
 437         Pico.m.dirtyPal = 1;\r
 438         // reset scaling\r
 439         if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
 440              gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
 441         else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 442 }\r
 443 \r
 444 \r
 445 static void emu_msg_cb(const char *msg)\r
 446 {\r
 447         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 448                 // 8-bit renderers\r
 449                 gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16), 0xe0, SCREEN_WIDTH*16);\r
 450                 osd_text(4, SCREEN_HEIGHT-16, msg);\r
 451                 gp2x_memcpy_all_buffers((char *)gp2x_screen+SCREEN_WIDTH*(SCREEN_HEIGHT-16),\r
 452                         SCREEN_WIDTH*(SCREEN_HEIGHT-16), SCREEN_WIDTH*16);\r
 453         } else {\r
 454                 // 16bit accurate renderer\r
 455                 gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, 0, SCREEN_WIDTH*16*2);\r
 456                 osd_text(4, SCREEN_HEIGHT-16, msg);\r
 457                 gp2x_memcpy_all_buffers((char *)gp2x_screen+SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2,\r
 458                         SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, SCREEN_WIDTH*16*2);\r
 459         }\r
 460         gettimeofday(&noticeMsgTime, 0);\r
 461         noticeMsgTime.tv_sec -= 2;\r
 462 \r
 463         /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
 464         reset_timing = 1;\r
 465 }\r
 466 \r
 467 static void emu_state_cb(const char *str)\r
 468 {\r
 469         clearArea(0);\r
 470         blit("", str);\r
 471 }\r
 472 \r
 473 static void emu_msg_tray_open(void)\r
 474 {\r
 475         strcpy(noticeMsg, "CD tray opened");\r
 476         gettimeofday(&noticeMsgTime, 0);\r
 477 }\r
 478 \r
 479 #if 0\r
 480 static void RunEventsPico(unsigned int events, unsigned int gp2x_keys)\r
 481 {\r
 482         int ret, px, py, lim_x;\r
 483         static int pdown_frames = 0;\r
 484 \r
 485         emu_RunEventsPico(events);\r
 486 \r
 487         if (pico_inp_mode == 0) return;\r
 488 \r
 489         // for F200\r
 490         ret = gp2x_touchpad_read(&px, &py);\r
 491         if (ret >= 0)\r
 492         {\r
 493                 if (ret > 35000)\r
 494                 {\r
 495                         if (pdown_frames++ > 5)\r
 496                                 PicoPad[0] |= 0x20;\r
 497 \r
 498                         pico_pen_x = px;\r
 499                         pico_pen_y = py;\r
 500                         if (!(Pico.video.reg[12]&1)) {\r
 501                                 pico_pen_x -= 32;\r
 502                                 if (pico_pen_x <   0) pico_pen_x = 0;\r
 503                                 if (pico_pen_x > 248) pico_pen_x = 248;\r
 504                         }\r
 505                         if (pico_pen_y > 224) pico_pen_y = 224;\r
 506                 }\r
 507                 else\r
 508                         pdown_frames = 0;\r
 509 \r
 510                 //if (ret == 0)\r
 511                 //      PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
 512         }\r
 513 \r
 514         PicoPad[0] &= ~0x0f; // release UDLR\r
 515         if (gp2x_keys & GP2X_UP)    pico_pen_y--;\r
 516         if (gp2x_keys & GP2X_DOWN)  pico_pen_y++;\r
 517         if (gp2x_keys & GP2X_LEFT)  pico_pen_x--;\r
 518         if (gp2x_keys & GP2X_RIGHT) pico_pen_x++;\r
 519 \r
 520         lim_x = (Pico.video.reg[12]&1) ? 319 : 255;\r
 521         if (pico_pen_y < 8) pico_pen_y = 8;\r
 522         if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y;\r
 523         if (pico_pen_x < 0) pico_pen_x = 0;\r
 524         if (pico_pen_x > lim_x-PICO_PEN_ADJUST_X) pico_pen_x = lim_x-PICO_PEN_ADJUST_X;\r
 525 \r
 526         PicoPicohw.pen_pos[0] = pico_pen_x;\r
 527         if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;\r
 528         PicoPicohw.pen_pos[0] += 0x3c;\r
 529         PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
 530 }\r
 531 #endif\r
 532 \r
 533 static void update_volume(int has_changed, int is_up)\r
 534 {\r
 535         static int prev_frame = 0, wait_frames = 0;\r
 536         int vol = currentConfig.volume;\r
 537 \r
 538         if (has_changed)\r
 539         {\r
 540                 if (vol < 5 && (PicoOpt&8) && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
 541                         wait_frames++;\r
 542                 else {\r
 543                         if (is_up) {\r
 544                                 if (vol < 99) vol++;\r
 545                         } else {\r
 546                                 if (vol >  0) vol--;\r
 547                         }\r
 548                         wait_frames = 0;\r
 549                         sndout_oss_setvol(vol, vol);\r
 550                         currentConfig.volume = vol;\r
 551                 }\r
 552                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 553                 gettimeofday(&noticeMsgTime, 0);\r
 554                 prev_frame = Pico.m.frame_count;\r
 555         }\r
 556 \r
 557         // set the right mixer func\r
 558         if (!(PicoOpt&8)) return; // just use defaults for mono\r
 559         if (vol >= 5)\r
 560                 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
 561         else {\r
 562                 mix_32_to_16l_level = 5 - vol;\r
 563                 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
 564         }\r
 565 }\r
 566 \r
 567 static void RunEvents(unsigned int which)\r
 568 {\r
 569         if (which & 0x1800) // save or load (but not both)\r
 570         {\r
 571                 int do_it = 1;\r
 572                 if ( emu_checkSaveFile(state_slot) &&\r
 573                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) ||   // load\r
 574                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
 575 #if 0\r
 576                         unsigned long keys;\r
 577                         blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
 578                         while ( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 579                                 usleep(50*1024);\r
 580                         if (keys & GP2X_X) do_it = 0;\r
 581                         while ( gp2x_joystick_read(1) & (GP2X_X|GP2X_Y) ) // wait for release\r
 582                                 usleep(50*1024);\r
 583                         clearArea(0);\r
 584 #endif\r
 585                 }\r
 586                 if (do_it) {\r
 587                         osd_text(4, SCREEN_HEIGHT-16, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 588                         PicoStateProgressCB = emu_state_cb;\r
 589                         gp2x_memcpy_all_buffers(gp2x_screen, 0, SCREEN_WIDTH*SCREEN_HEIGHT*2);\r
 590                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
 591                         PicoStateProgressCB = NULL;\r
 592                 }\r
 593 \r
 594                 reset_timing = 1;\r
 595         }\r
 596         if (which & 0x0400) // switch renderer\r
 597         {\r
 598                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 599                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 600                 else   currentConfig.EmuOpt &= ~0x80;\r
 601 \r
 602                 vidResetMode();\r
 603 \r
 604                 if (PicoOpt&0x10) {\r
 605                         strcpy(noticeMsg, " 8bit fast renderer");\r
 606                 } else if (currentConfig.EmuOpt&0x80) {\r
 607                         strcpy(noticeMsg, "16bit accurate renderer");\r
 608                 } else {\r
 609                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 610                 }\r
 611 \r
 612                 gettimeofday(&noticeMsgTime, 0);\r
 613         }\r
 614         if (which & 0x0300)\r
 615         {\r
 616                 if(which&0x0200) {\r
 617                         state_slot -= 1;\r
 618                         if(state_slot < 0) state_slot = 9;\r
 619                 } else {\r
 620                         state_slot += 1;\r
 621                         if(state_slot > 9) state_slot = 0;\r
 622                 }\r
 623                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
 624                 gettimeofday(&noticeMsgTime, 0);\r
 625         }\r
 626         if (which & 0x0080) {\r
 627                 engineState = PGS_Menu;\r
 628         }\r
 629 }\r
 630 \r
 631 static void updateKeys(void)\r
 632 {\r
 633         unsigned int allActions[2] = { 0, 0 }, events;\r
 634         static unsigned int prevEvents = 0;\r
 635 \r
 636         /* FIXME: combos, player2 */\r
 637         allActions[0] = in_update();\r
 638 \r
 639         PicoPad[0] = allActions[0] & 0xfff;\r
 640         PicoPad[1] = allActions[1] & 0xfff;\r
 641 \r
 642         if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);\r
 643         if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);\r
 644 \r
 645         events = (allActions[0] | allActions[1]) >> 16;\r
 646 \r
 647         // volume is treated in special way and triggered every frame\r
 648         if (events & 0x6000)\r
 649                 update_volume(1, events & 0x2000);\r
 650 \r
 651         if ((events ^ prevEvents) & 0x40) {\r
 652                 emu_changeFastForward(events & 0x40);\r
 653                 update_volume(0, 0);\r
 654                 reset_timing = 1;\r
 655         }\r
 656 \r
 657         events &= ~prevEvents;\r
 658 \r
 659 /*\r
 660         if (PicoAHW == PAHW_PICO)\r
 661                 RunEventsPico(events, keys);\r
 662 */\r
 663         if (events) RunEvents(events);\r
 664         if (movie_data) emu_updateMovie();\r
 665 \r
 666         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 667 }\r
 668 \r
 669 \r
 670 static void updateSound(int len)\r
 671 {\r
 672         if (PicoOpt&8) len<<=1;\r
 673 \r
 674         /* avoid writing audio when lagging behind to prevent audio lag */\r
 675         if (PicoSkipFrame != 2)\r
 676                 sndout_oss_write(PsndOut, len<<1);\r
 677 }\r
 678 \r
 679 \r
 680 static void SkipFrame(int do_audio)\r
 681 {\r
 682         PicoSkipFrame=do_audio ? 1 : 2;\r
 683         PicoFrame();\r
 684         PicoSkipFrame=0;\r
 685 }\r
 686 \r
 687 \r
 688 void emu_forcedFrame(int opts)\r
 689 {\r
 690         int po_old = PicoOpt;\r
 691         int eo_old = currentConfig.EmuOpt;\r
 692 \r
 693         PicoOpt &= ~0x10;\r
 694         PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
 695         currentConfig.EmuOpt |= 0x80;\r
 696 \r
 697         //vidResetMode();\r
 698 #ifdef USE_320_SCREEN\r
 699         PicoDrawSetColorFormat(1);\r
 700         PicoScanBegin = EmuScanBegin16;\r
 701 #else\r
 702         PicoDrawSetColorFormat(-1);\r
 703         PicoScanEnd = EmuScanEnd16;\r
 704 #endif\r
 705         Pico.m.dirtyPal = 1;\r
 706         PicoFrameDrawOnly();\r
 707 \r
 708 /*\r
 709         if (!(Pico.video.reg[12]&1)) {\r
 710                 vidCpyM2 = vidCpyM2_32col;\r
 711                 clearArea(1);\r
 712         } else  vidCpyM2 = vidCpyM2_40col;\r
 713 \r
 714         vidCpyM2((unsigned char *)gp2x_screen+SCREEN_WIDTH*8, PicoDraw2FB+328*8);\r
 715         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 716         gp2x_video_setpalette(localPal, 0x40);\r
 717 */\r
 718         PicoOpt = po_old;\r
 719         currentConfig.EmuOpt = eo_old;\r
 720 }\r
 721 \r
 722 void emu_platformDebugCat(char *str)\r
 723 {\r
 724         // nothing\r
 725 }\r
 726 \r
 727 static void simpleWait(int thissec, int lim_time)\r
 728 {\r
 729         struct timeval tval;\r
 730 \r
 731         spend_cycles(1024);\r
 732         gettimeofday(&tval, 0);\r
 733         if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 734 \r
 735         while (tval.tv_usec < lim_time)\r
 736         {\r
 737                 spend_cycles(1024);\r
 738                 gettimeofday(&tval, 0);\r
 739                 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 740         }\r
 741 }\r
 742 \r
 743 void emu_startSound(void)\r
 744 {\r
 745         static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;\r
 746         int target_fps = Pico.m.pal ? 50 : 60;\r
 747 \r
 748         PsndOut = NULL;\r
 749 \r
 750         if (currentConfig.EmuOpt & 4)\r
 751         {\r
 752                 int snd_excess_add;\r
 753                 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old)\r
 754                         PsndRerate(Pico.m.frame_count ? 1 : 0);\r
 755 \r
 756                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
 757                 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
 758                         PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
 759                 sndout_oss_start(PsndRate, 16, (PicoOpt&8)>>3);\r
 760                 sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r
 761                 PicoWriteSound = updateSound;\r
 762                 update_volume(0, 0);\r
 763                 memset(sndBuffer, 0, sizeof(sndBuffer));\r
 764                 PsndOut = sndBuffer;\r
 765                 PsndRate_old = PsndRate;\r
 766                 PicoOpt_old  = PicoOpt;\r
 767                 pal_old = Pico.m.pal;\r
 768         }\r
 769 }\r
 770 \r
 771 void emu_endSound(void)\r
 772 {\r
 773 }\r
 774 \r
 775 /* wait until we can write more sound */\r
 776 void emu_waitSound(void)\r
 777 {\r
 778         // don't need to do anything, writes will block by themselves\r
 779 }\r
 780 \r
 781 void emu_Loop(void)\r
 782 {\r
 783         char fpsbuff[24]; // fps count c string\r
 784         struct timeval tval; // timing\r
 785         int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
 786         int  frames_done,  frames_shown,  thissec; // actual frames\r
 787         int oldmodes = 0, target_fps, target_frametime, lim_time, vsync_offset, i;\r
 788         char *notice = 0;\r
 789 \r
 790         printf("entered emu_Loop()\n");\r
 791 \r
 792         fpsbuff[0] = 0;\r
 793 \r
 794         // make sure we are in correct mode\r
 795         vidResetMode();\r
 796         Pico.m.dirtyPal = 1;\r
 797         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
 798         emu_findKeyBindCombos();\r
 799 \r
 800         // pal/ntsc might have changed, reset related stuff\r
 801         target_fps = Pico.m.pal ? 50 : 60;\r
 802         target_frametime = 1000000/target_fps;\r
 803         reset_timing = 1;\r
 804 \r
 805         emu_startSound();\r
 806 \r
 807         // prepare CD buffer\r
 808         if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r
 809 \r
 810         // calc vsync offset to sync timing code with vsync\r
 811         if (currentConfig.EmuOpt&0x2000) {\r
 812                 gettimeofday(&tval, 0);\r
 813                 gp2x_video_wait_vsync();\r
 814                 gettimeofday(&tval, 0);\r
 815                 vsync_offset = tval.tv_usec;\r
 816                 while (vsync_offset >= target_frametime)\r
 817                         vsync_offset -= target_frametime;\r
 818                 if (!vsync_offset) vsync_offset++;\r
 819                 printf("vsync_offset: %i\n", vsync_offset);\r
 820         } else\r
 821                 vsync_offset = 0;\r
 822 \r
 823         frames_done = frames_shown = thissec =\r
 824         pframes_done = pframes_shown = pthissec = 0;\r
 825 \r
 826         // loop\r
 827         while (engineState == PGS_Running)\r
 828         {\r
 829                 int modes;\r
 830 \r
 831                 gettimeofday(&tval, 0);\r
 832                 if (reset_timing) {\r
 833                         reset_timing = 0;\r
 834                         pthissec = tval.tv_sec;\r
 835                         pframes_shown = pframes_done = tval.tv_usec/target_frametime;\r
 836                 }\r
 837 \r
 838                 // show notice message?\r
 839                 if (noticeMsgTime.tv_sec)\r
 840                 {\r
 841                         static int noticeMsgSum;\r
 842                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
 843                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
 844                                 clearArea(0);\r
 845                                 notice = 0;\r
 846                         } else {\r
 847                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
 848                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
 849                                 notice = noticeMsg;\r
 850                         }\r
 851                 }\r
 852 \r
 853                 // check for mode changes\r
 854                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
 855                 if (modes != oldmodes)\r
 856                 {\r
 857                         int scalex = SCREEN_WIDTH;\r
 858                         osd_fps_x = OSD_FPS_X;\r
 859                         if (modes & 4) {\r
 860                                 vidCpyM2 = vidCpyM2_40col;\r
 861                         } else {\r
 862                                 if (PicoOpt & 0x100) {\r
 863                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
 864                                         scalex = 256;\r
 865                                         osd_fps_x = OSD_FPS_X - 64;\r
 866                                 } else {\r
 867                                         vidCpyM2 = vidCpyM2_32col;\r
 868                                 }\r
 869                         }\r
 870                         if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
 871                              gp2x_video_RGB_setscaling(8, scalex, 224);\r
 872                         else gp2x_video_RGB_setscaling(0, scalex, 240);\r
 873                         oldmodes = modes;\r
 874                         clearArea(1);\r
 875                 }\r
 876 \r
 877                 // second changed?\r
 878                 if (thissec != tval.tv_sec)\r
 879                 {\r
 880 #ifdef BENCHMARK\r
 881                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
 882                         if (++bench == 4) {\r
 883                                 bench = 0;\r
 884                                 bench_fps_s = bench_fps / 4;\r
 885                                 bf[bfp++ & 3] = bench_fps / 4;\r
 886                                 bench_fps = 0;\r
 887                         }\r
 888                         bench_fps += frames_shown;\r
 889                         sprintf(fpsbuff, "%3i/%3i/%3i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
 890                         printf("%s\n", fpsbuff);\r
 891 #else\r
 892                         if (currentConfig.EmuOpt & 2) {\r
 893                                 sprintf(fpsbuff, "%3i/%3i", frames_shown, frames_done);\r
 894                                 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
 895                         }\r
 896 #endif\r
 897                         frames_shown = frames_done = 0;\r
 898                         thissec = tval.tv_sec;\r
 899                 }\r
 900 #ifdef PFRAMES\r
 901                 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
 902 #endif\r
 903 \r
 904                 if (pthissec != tval.tv_sec)\r
 905                 {\r
 906                         if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
 907                                 pframes_done = pframes_shown = 0;\r
 908                         } else {\r
 909                                 // it is quite common for this implementation to leave 1 fame unfinished\r
 910                                 // when second changes, but we don't want buffer to starve.\r
 911                                 if(PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {\r
 912                                         updateKeys();\r
 913                                         SkipFrame(1); pframes_done++;\r
 914                                 }\r
 915 \r
 916                                 pframes_done  -= target_fps; if (pframes_done  < 0) pframes_done  = 0;\r
 917                                 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;\r
 918                                 if (pframes_shown > pframes_done) pframes_shown = pframes_done;\r
 919                         }\r
 920                         pthissec = tval.tv_sec;\r
 921                 }\r
 922 \r
 923                 lim_time = (pframes_done+1) * target_frametime + vsync_offset;\r
 924                 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
 925                 {\r
 926                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
 927                                 updateKeys();\r
 928                                 SkipFrame(1); pframes_done++; frames_done++;\r
 929                                 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
 930                                         gettimeofday(&tval, 0);\r
 931                                         if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 932                                         if (tval.tv_usec < lim_time) { // we are too fast\r
 933                                                 simpleWait(pthissec, lim_time);\r
 934                                         }\r
 935                                 }\r
 936                                 lim_time += target_frametime;\r
 937                         }\r
 938                 }\r
 939                 else if (tval.tv_usec > lim_time) // auto frameskip\r
 940                 {\r
 941                         // no time left for this frame - skip\r
 942                         if (tval.tv_usec - lim_time >= 300000) {\r
 943                                 /* something caused a slowdown for us (disk access? cache flush?)\r
 944                                  * try to recover by resetting timing... */\r
 945                                 reset_timing = 1;\r
 946                                 continue;\r
 947                         }\r
 948                         updateKeys();\r
 949                         SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;\r
 950                         continue;\r
 951                 }\r
 952 \r
 953                 updateKeys();\r
 954                 PicoFrame();\r
 955 \r
 956                 // check time\r
 957                 gettimeofday(&tval, 0);\r
 958                 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 959 \r
 960                 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
 961                         reset_timing = 1;\r
 962 #if 1\r
 963                 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
 964                 {\r
 965                         // sleep or vsync if we are still too fast\r
 966                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
 967                         if (!reset_timing && tval.tv_usec < lim_time)\r
 968                         {\r
 969                                 // we are too fast\r
 970                                 if (vsync_offset) {\r
 971                                         if (lim_time - tval.tv_usec > target_frametime/2)\r
 972                                                 simpleWait(pthissec, lim_time - target_frametime/4);\r
 973                                         gp2x_video_wait_vsync();\r
 974                                 } else {\r
 975                                         simpleWait(pthissec, lim_time);\r
 976                                 }\r
 977                         }\r
 978                 }\r
 979 #endif\r
 980                 blit(fpsbuff, notice);\r
 981 \r
 982                 pframes_done++; pframes_shown++;\r
 983                  frames_done++;  frames_shown++;\r
 984         }\r
 985 \r
 986         emu_changeFastForward(0);\r
 987 \r
 988         if (PicoAHW & PAHW_MCD) PicoCDBufferFree();\r
 989 \r
 990         // save SRAM\r
 991         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 992                 emu_state_cb("Writing SRAM/BRAM..");\r
 993                 emu_SaveLoadGame(0, 1);\r
 994                 SRam.changed = 0;\r
 995         }\r
 996 \r
 997         // if in 8bit mode, generate 16bit image for menu background\r
 998         if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
 999                 emu_forcedFrame(POPT_EN_SOFTSCALE);\r
1000 }\r
1001 \r
1002 \r
1003 void emu_ResetGame(void)\r
1004 {\r
1005         PicoReset();\r
1006         reset_timing = 1;\r
1007 }\r
1008 \r