platform/gp2x/emu.c

   1 // (c) Copyright 2006-2007 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 "emu.h"\r
  18 #include "gp2x.h"\r
  19 #include "usbjoy.h"\r
  20 #include "menu.h"\r
  21 #include "../common/arm_utils.h"\r
  22 #include "../common/fonts.h"\r
  23 #include "../common/emu.h"\r
  24 #include "../common/config.h"\r
  25 #include "cpuctrl.h"\r
  26 \r
  27 #include <Pico/PicoInt.h>\r
  28 #include <Pico/Patch.h>\r
  29 #include <Pico/sound/mix.h>\r
  30 #include <zlib/zlib.h>\r
  31 \r
  32 //#define PFRAMES\r
  33 \r
  34 #ifdef BENCHMARK\r
  35 #define OSD_FPS_X 220\r
  36 #else\r
  37 #define OSD_FPS_X 260\r
  38 #endif\r
  39 \r
  40 \r
  41 int engineState;\r
  42 int select_exits = 0;\r
  43 \r
  44 char romFileName[PATH_MAX];\r
  45 \r
  46 extern int crashed_940;\r
  47 \r
  48 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
  49 static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
  50 static int osd_fps_x;\r
  51 static int combo_keys = 0, combo_acts = 0;      // keys and actions which need button combos\r
  52 static int gp2x_old_gamma = 100;\r
  53 char noticeMsg[64];                     // notice msg to draw\r
  54 unsigned char *PicoDraw2FB = NULL;  // temporary buffer for alt renderer\r
  55 int reset_timing = 0;\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 void 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 \r
  79 void emu_Init(void)\r
  80 {\r
  81         // make temp buffer for alt renderer\r
  82         PicoDraw2FB = malloc((8+320)*(8+240+8));\r
  83         if (!PicoDraw2FB)\r
  84         {\r
  85                 printf("PicoDraw2FB == 0\n");\r
  86         }\r
  87 \r
  88         // make dirs for saves, cfgs, etc.\r
  89         mkdir("mds", 0777);\r
  90         mkdir("srm", 0777);\r
  91         mkdir("brm", 0777);\r
  92         mkdir("cfg", 0777);\r
  93 \r
  94         PicoInit();\r
  95         PicoMessage = emu_msg_cb;\r
  96         PicoMCDopenTray = emu_msg_tray_open;\r
  97         PicoMCDcloseTray = menu_loop_tray;\r
  98 }\r
  99 \r
 100 \r
 101 static void find_combos(void)\r
 102 {\r
 103         int act, u;\r
 104 \r
 105         // find out which keys and actions are combos\r
 106         combo_keys = combo_acts = 0;\r
 107         for (act = 0; act < 32; act++)\r
 108         {\r
 109                 int keyc = 0, keyc2 = 0;\r
 110                 if (act == 16 || act == 17) continue; // player2 flag\r
 111                 if (act > 17)\r
 112                 {\r
 113                         for (u = 0; u < 32; u++)\r
 114                                 if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;\r
 115                 }\r
 116                 else\r
 117                 {\r
 118                         for (u = 0; u < 32; u++)\r
 119                                 if ((currentConfig.KeyBinds[u] & 0x30000) == 0 && // pl. 1\r
 120                                         (currentConfig.KeyBinds[u] & (1 << act))) keyc++;\r
 121                         for (u = 0; u < 32; u++)\r
 122                                 if ((currentConfig.KeyBinds[u] & 0x30000) == 1 && // pl. 2\r
 123                                         (currentConfig.KeyBinds[u] & (1 << act))) keyc2++;\r
 124                         if (keyc2 > keyc) keyc = keyc2;\r
 125                 }\r
 126                 if (keyc > 1)\r
 127                 {\r
 128                         // loop again and mark those keys and actions as combo\r
 129                         for (u = 0; u < 32; u++)\r
 130                         {\r
 131                                 if (currentConfig.KeyBinds[u] & (1 << act)) {\r
 132                                         combo_keys |= 1 << u;\r
 133                                         combo_acts |= 1 << act;\r
 134                                 }\r
 135                         }\r
 136                 }\r
 137         }\r
 138 \r
 139         // printf("combo keys/acts: %08x %08x\n", combo_keys, combo_acts);\r
 140 }\r
 141 \r
 142 \r
 143 static void scaling_update(void)\r
 144 {\r
 145         PicoOpt &= ~0x4100;\r
 146         switch (currentConfig.scaling) {\r
 147                 default: break; // off\r
 148                 case 1:  // hw hor\r
 149                 case 2:  PicoOpt |=  0x0100; break; // hw hor+vert\r
 150                 case 3:  PicoOpt |=  0x4000; break; // sw hor\r
 151         }\r
 152 }\r
 153 \r
 154 \r
 155 void emu_Deinit(void)\r
 156 {\r
 157         // save SRAM\r
 158         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 159                 emu_SaveLoadGame(0, 1);\r
 160                 SRam.changed = 0;\r
 161         }\r
 162 \r
 163         if (!(currentConfig.EmuOpt & 0x20)) {\r
 164                 config_writelrom(PicoConfigFile);\r
 165 #ifndef NO_SYNC\r
 166                 sync();\r
 167 #endif\r
 168         }\r
 169 \r
 170         free(PicoDraw2FB);\r
 171 \r
 172         PicoExit();\r
 173 \r
 174         // restore gamma\r
 175         if (gp2x_old_gamma != 100)\r
 176                 set_gamma(100, 0);\r
 177 }\r
 178 \r
 179 void emu_prepareDefaultConfig(void)\r
 180 {\r
 181         memset(&defaultConfig, 0, sizeof(defaultConfig));\r
 182         defaultConfig.lastRomFile[0] = 0;\r
 183         defaultConfig.EmuOpt  = 0x1f | 0x600; // | confirm_save, cd_leds\r
 184         defaultConfig.s_PicoOpt = 0x0f | 0xe00; // | use_940, cd_pcm, cd_cdda\r
 185         defaultConfig.s_PsndRate = 44100;\r
 186         defaultConfig.s_PicoRegion = 0; // auto\r
 187         defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
 188         defaultConfig.s_PicoCDBuffers = 64;\r
 189         defaultConfig.Frameskip = -1; // auto\r
 190         defaultConfig.CPUclock = 200;\r
 191         defaultConfig.volume = 50;\r
 192         defaultConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
 193         defaultConfig.KeyBinds[ 4] = 1<<1;\r
 194         defaultConfig.KeyBinds[ 2] = 1<<2;\r
 195         defaultConfig.KeyBinds[ 6] = 1<<3;\r
 196         defaultConfig.KeyBinds[14] = 1<<4;\r
 197         defaultConfig.KeyBinds[13] = 1<<5;\r
 198         defaultConfig.KeyBinds[12] = 1<<6;\r
 199         defaultConfig.KeyBinds[ 8] = 1<<7;\r
 200         defaultConfig.KeyBinds[15] = 1<<26; // switch rend\r
 201         defaultConfig.KeyBinds[10] = 1<<27; // save state\r
 202         defaultConfig.KeyBinds[11] = 1<<28; // load state\r
 203         defaultConfig.KeyBinds[23] = 1<<29; // vol up\r
 204         defaultConfig.KeyBinds[22] = 1<<30; // vol down\r
 205         defaultConfig.gamma = 100;\r
 206         defaultConfig.scaling = 0;\r
 207 }\r
 208 \r
 209 void emu_setDefaultConfig(void)\r
 210 {\r
 211         memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));\r
 212         PicoOpt = currentConfig.s_PicoOpt;\r
 213         PsndRate = currentConfig.s_PsndRate;\r
 214         PicoRegionOverride = currentConfig.s_PicoRegion;\r
 215         PicoAutoRgnOrder = currentConfig.s_PicoAutoRgnOrder;\r
 216         PicoCDBuffers = currentConfig.s_PicoCDBuffers;\r
 217 }\r
 218 \r
 219 void osd_text(int x, int y, const char *text)\r
 220 {\r
 221         int len = strlen(text)*8;\r
 222 \r
 223         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 224                 int *p, i, h;\r
 225                 x &= ~3; // align x\r
 226                 len = (len+3) >> 2;\r
 227                 for (h = 0; h < 8; h++) {\r
 228                         p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
 229                         for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
 230                 }\r
 231                 emu_textOut8(x, y, text);\r
 232         } else {\r
 233                 int *p, i, h;\r
 234                 x &= ~1; // align x\r
 235                 len = (len+1) >> 1;\r
 236                 for (h = 0; h < 8; h++) {\r
 237                         p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
 238                         for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
 239                 }\r
 240                 emu_textOut16(x, y, text);\r
 241         }\r
 242 }\r
 243 \r
 244 static void cd_leds(void)\r
 245 {\r
 246 //      static\r
 247         int old_reg;\r
 248 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
 249         old_reg = Pico_mcd->s68k_regs[0];\r
 250 \r
 251         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 252                 // 8-bit modes\r
 253                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 254                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 255                 *(unsigned int *)((char *)gp2x_screen + 320*2+ 4) =\r
 256                 *(unsigned int *)((char *)gp2x_screen + 320*3+ 4) =\r
 257                 *(unsigned int *)((char *)gp2x_screen + 320*4+ 4) = col_g;\r
 258                 *(unsigned int *)((char *)gp2x_screen + 320*2+12) =\r
 259                 *(unsigned int *)((char *)gp2x_screen + 320*3+12) =\r
 260                 *(unsigned int *)((char *)gp2x_screen + 320*4+12) = col_r;\r
 261         } else {\r
 262                 // 16-bit modes\r
 263                 unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+4);\r
 264                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 265                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
 266                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 267                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 268                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
 269         }\r
 270 }\r
 271 \r
 272 static int EmuScan16(unsigned int num, void *sdata)\r
 273 {\r
 274         if (!(Pico.video.reg[1]&8)) num += 8;\r
 275         DrawLineDest = (unsigned short *) gp2x_screen + 320*(num+1);\r
 276 \r
 277         return 0;\r
 278 }\r
 279 \r
 280 static int EmuScan8(unsigned int num, void *sdata)\r
 281 {\r
 282         if (!(Pico.video.reg[1]&8)) num += 8;\r
 283         DrawLineDest = (unsigned char *)  gp2x_screen + 320*(num+1);\r
 284 \r
 285         return 0;\r
 286 }\r
 287 \r
 288 int localPal[0x100];\r
 289 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 290 \r
 291 static void blit(const char *fps, const char *notice)\r
 292 {\r
 293         int emu_opt = currentConfig.EmuOpt;\r
 294 \r
 295         if (PicoOpt&0x10)\r
 296         {\r
 297                 // 8bit fast renderer\r
 298                 if (Pico.m.dirtyPal) {\r
 299                         Pico.m.dirtyPal = 0;\r
 300                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 301                         // feed new palette to our device\r
 302                         gp2x_video_setpalette(localPal, 0x40);\r
 303                 }\r
 304                 // a hack for VR\r
 305                 if (PicoRead16Hook == PicoSVPRead16)\r
 306                         memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);\r
 307                 // do actual copy\r
 308                 vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
 309         }\r
 310         else if (!(emu_opt&0x80))\r
 311         {\r
 312                 // 8bit accurate renderer\r
 313                 if (Pico.m.dirtyPal) {\r
 314                         Pico.m.dirtyPal = 0;\r
 315                         if(Pico.video.reg[0xC]&8) { // shadow/hilight mode\r
 316                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 317                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 318                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 319                                 blockcpy(localPal+0xc0, localPal+0x40, 0x40*4);\r
 320                                 localPal[0xc0] = 0x0000c000;\r
 321                                 localPal[0xd0] = 0x00c00000;\r
 322                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 323                                 localPal[0xf0] = 0x00ffffff;\r
 324                                 gp2x_video_setpalette(localPal, 0x100);\r
 325                         } else if (rendstatus & 0x20) { // mid-frame palette changes\r
 326                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 327                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 328                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 329                                 gp2x_video_setpalette(localPal, 0xc0);\r
 330                         } else {\r
 331                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 332                                 gp2x_video_setpalette(localPal, 0x40);\r
 333                         }\r
 334                 }\r
 335         }\r
 336 \r
 337         if (notice || (emu_opt & 2)) {\r
 338                 int h = 232;\r
 339                 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 8;\r
 340                 if (notice) osd_text(4, h, notice);\r
 341                 if (emu_opt & 2)\r
 342                         osd_text(osd_fps_x, h, fps);\r
 343         }\r
 344         if ((emu_opt & 0x400) && (PicoMCD & 1))\r
 345                 cd_leds();\r
 346 \r
 347         //gp2x_video_wait_vsync();\r
 348         gp2x_video_flip();\r
 349 \r
 350         if (!(PicoOpt&0x10)) {\r
 351                 if (!(Pico.video.reg[1]&8)) {\r
 352                         if (currentConfig.EmuOpt&0x80) {\r
 353                                 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
 354                         } else {\r
 355                                 DrawLineDest = (unsigned char  *) gp2x_screen + 320*8;\r
 356                         }\r
 357                 } else {\r
 358                         DrawLineDest = gp2x_screen;\r
 359                 }\r
 360         }\r
 361 }\r
 362 \r
 363 \r
 364 // clears whole screen or just the notice area (in all buffers)\r
 365 static void clearArea(int full)\r
 366 {\r
 367         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 368                 // 8-bit renderers\r
 369                 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 370                 else      gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 371         } else {\r
 372                 // 16bit accurate renderer\r
 373                 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
 374                 else      gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 375         }\r
 376 }\r
 377 \r
 378 \r
 379 static void vidResetMode(void)\r
 380 {\r
 381         if (PicoOpt&0x10) {\r
 382                 gp2x_video_changemode(8);\r
 383         } else if (currentConfig.EmuOpt&0x80) {\r
 384                 gp2x_video_changemode(16);\r
 385                 PicoDrawSetColorFormat(1);\r
 386                 PicoScan = EmuScan16;\r
 387                 PicoScan(0, 0);\r
 388         } else {\r
 389                 gp2x_video_changemode(8);\r
 390                 PicoDrawSetColorFormat(2);\r
 391                 PicoScan = EmuScan8;\r
 392                 PicoScan(0, 0);\r
 393         }\r
 394         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 395                 // setup pal for 8-bit modes\r
 396                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 397                 localPal[0xd0] = 0x00c00000;\r
 398                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 399                 localPal[0xf0] = 0x00ffffff;\r
 400                 gp2x_video_setpalette(localPal, 0x100);\r
 401                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 402                 gp2x_video_flip();\r
 403         }\r
 404         Pico.m.dirtyPal = 1;\r
 405         // reset scaling\r
 406         if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
 407              gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
 408         else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 409 }\r
 410 \r
 411 \r
 412 static void emu_msg_cb(const char *msg)\r
 413 {\r
 414         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 415                 // 8-bit renderers\r
 416                 gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 417                 osd_text(4, 232, msg);\r
 418                 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232, 320*232, 320*8);\r
 419         } else {\r
 420                 // 16bit accurate renderer\r
 421                 gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 422                 osd_text(4, 232, msg);\r
 423                 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232*2, 320*232*2, 320*8*2);\r
 424         }\r
 425         gettimeofday(&noticeMsgTime, 0);\r
 426         noticeMsgTime.tv_sec -= 2;\r
 427 \r
 428         /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
 429         reset_timing = 1;\r
 430 }\r
 431 \r
 432 static void emu_state_cb(const char *str)\r
 433 {\r
 434         clearArea(0);\r
 435         blit("", str);\r
 436 }\r
 437 \r
 438 static void emu_msg_tray_open(void)\r
 439 {\r
 440         strcpy(noticeMsg, "CD tray opened");\r
 441         gettimeofday(&noticeMsgTime, 0);\r
 442 }\r
 443 \r
 444 static void update_volume(int has_changed, int is_up)\r
 445 {\r
 446         static int prev_frame = 0, wait_frames = 0;\r
 447         int vol = currentConfig.volume;\r
 448 \r
 449         if (has_changed)\r
 450         {\r
 451                 if (vol < 5 && (PicoOpt&8) && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
 452                         wait_frames++;\r
 453                 else {\r
 454                         if (is_up) {\r
 455                                 if (vol < 99) vol++;\r
 456                         } else {\r
 457                                 if (vol >  0) vol--;\r
 458                         }\r
 459                         wait_frames = 0;\r
 460                         gp2x_sound_volume(vol, vol);\r
 461                         currentConfig.volume = vol;\r
 462                 }\r
 463                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 464                 gettimeofday(&noticeMsgTime, 0);\r
 465                 prev_frame = Pico.m.frame_count;\r
 466         }\r
 467 \r
 468         // set the right mixer func\r
 469         if (!(PicoOpt&8)) return; // just use defaults for mono\r
 470         if (vol >= 5)\r
 471                 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
 472         else {\r
 473                 mix_32_to_16l_level = 5 - vol;\r
 474                 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
 475         }\r
 476 }\r
 477 \r
 478 static void change_fast_forward(int set_on)\r
 479 {\r
 480         static void *set_PsndOut = NULL;\r
 481         static int set_Frameskip, set_EmuOpt, is_on = 0;\r
 482 \r
 483         if (set_on && !is_on) {\r
 484                 set_PsndOut = PsndOut;\r
 485                 set_Frameskip = currentConfig.Frameskip;\r
 486                 set_EmuOpt = currentConfig.EmuOpt;\r
 487                 PsndOut = NULL;\r
 488                 currentConfig.Frameskip = 8;\r
 489                 currentConfig.EmuOpt &= ~4;\r
 490                 is_on = 1;\r
 491         }\r
 492         else if (!set_on && is_on) {\r
 493                 PsndOut = set_PsndOut;\r
 494                 currentConfig.Frameskip = set_Frameskip;\r
 495                 currentConfig.EmuOpt = set_EmuOpt;\r
 496                 PsndRerate(1);\r
 497                 update_volume(0, 0);\r
 498                 reset_timing = 1;\r
 499                 is_on = 0;\r
 500         }\r
 501 }\r
 502 \r
 503 static void RunEvents(unsigned int which)\r
 504 {\r
 505         if (which & 0x1800) // save or load (but not both)\r
 506         {\r
 507                 int do_it = 1;\r
 508                 if ( emu_checkSaveFile(state_slot) &&\r
 509                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) ||   // load\r
 510                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
 511                         unsigned long keys;\r
 512                         blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
 513                         while( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 514                                 usleep(50*1024);\r
 515                         if (keys & GP2X_X) do_it = 0;\r
 516                         clearArea(0);\r
 517                 }\r
 518                 if (do_it) {\r
 519                         osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 520                         PicoStateProgressCB = emu_state_cb;\r
 521                         gp2x_memcpy_all_buffers(gp2x_screen, 0, 320*240*2);\r
 522                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
 523                         PicoStateProgressCB = NULL;\r
 524                 }\r
 525 \r
 526                 reset_timing = 1;\r
 527         }\r
 528         if (which & 0x0400) // switch renderer\r
 529         {\r
 530                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 531                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 532                 else   currentConfig.EmuOpt &= ~0x80;\r
 533 \r
 534                 vidResetMode();\r
 535 \r
 536                 if (PicoOpt&0x10) {\r
 537                         strcpy(noticeMsg, " 8bit fast renderer");\r
 538                 } else if (currentConfig.EmuOpt&0x80) {\r
 539                         strcpy(noticeMsg, "16bit accurate renderer");\r
 540                 } else {\r
 541                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 542                 }\r
 543 \r
 544                 gettimeofday(&noticeMsgTime, 0);\r
 545         }\r
 546         if (which & 0x0300)\r
 547         {\r
 548                 if(which&0x0200) {\r
 549                         state_slot -= 1;\r
 550                         if(state_slot < 0) state_slot = 9;\r
 551                 } else {\r
 552                         state_slot += 1;\r
 553                         if(state_slot > 9) state_slot = 0;\r
 554                 }\r
 555                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
 556                 gettimeofday(&noticeMsgTime, 0);\r
 557         }\r
 558         if (which & 0x0080) {\r
 559                 engineState = PGS_Menu;\r
 560         }\r
 561 }\r
 562 \r
 563 \r
 564 static void updateKeys(void)\r
 565 {\r
 566         unsigned long keys, allActions[2] = { 0, 0 }, events;\r
 567         static unsigned long prevEvents = 0;\r
 568         int joy, i;\r
 569 \r
 570         keys = gp2x_joystick_read(0);\r
 571         if (keys & GP2X_SELECT) {\r
 572                 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
 573                 // wait until select is released, so menu would not resume game\r
 574                 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
 575         }\r
 576 \r
 577         keys &= CONFIGURABLE_KEYS;\r
 578 \r
 579         for (i = 0; i < 32; i++)\r
 580         {\r
 581                 if (keys & (1 << i)) {\r
 582                         int pl, acts = currentConfig.KeyBinds[i];\r
 583                         if (!acts) continue;\r
 584                         pl = (acts >> 16) & 1;\r
 585                         if (combo_keys & (1 << i)) {\r
 586                                 int u = i+1, acts_c = acts & combo_acts;\r
 587                                 // let's try to find the other one\r
 588                                 if (acts_c)\r
 589                                         for (; u < 32; u++)\r
 590                                                 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {\r
 591                                                         allActions[pl] |= acts_c;\r
 592                                                         keys &= ~((1 << i) | (1 << u));\r
 593                                                         break;\r
 594                                                 }\r
 595                                 // add non-combo actions if combo ones were not found\r
 596                                 if (!acts_c || u == 32)\r
 597                                         allActions[pl] |= acts & ~combo_acts;\r
 598                         } else {\r
 599                                 allActions[pl] |= acts;\r
 600                         }\r
 601                 }\r
 602         }\r
 603 \r
 604         // add joy inputs\r
 605         if (num_of_joys > 0)\r
 606         {\r
 607                 gp2x_usbjoy_update();\r
 608                 for (joy = 0; joy < num_of_joys; joy++) {\r
 609                         int keys = gp2x_usbjoy_check2(joy);\r
 610                         for (i = 0; i < 32; i++) {\r
 611                                 if (keys & (1 << i)) {\r
 612                                         int acts = currentConfig.JoyBinds[joy][i];\r
 613                                         int pl = (acts >> 16) & 1;\r
 614                                         allActions[pl] |= acts;\r
 615                                 }\r
 616                         }\r
 617                 }\r
 618         }\r
 619 \r
 620         PicoPad[0] = (unsigned short) allActions[0];\r
 621         PicoPad[1] = (unsigned short) allActions[1];\r
 622 \r
 623         events = (allActions[0] | allActions[1]) >> 16;\r
 624 \r
 625         // volume is treated in special way and triggered every frame\r
 626         if (events & 0x6000)\r
 627                 update_volume(1, events & 0x2000);\r
 628 \r
 629         if ((events ^ prevEvents) & 0x40)\r
 630                 change_fast_forward(events & 0x40);\r
 631 \r
 632         events &= ~prevEvents;\r
 633         if (events) RunEvents(events);\r
 634         if (movie_data) emu_updateMovie();\r
 635 \r
 636         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 637 }\r
 638 \r
 639 \r
 640 static void updateSound(int len)\r
 641 {\r
 642         if (PicoOpt&8) len<<=1;\r
 643 \r
 644         /* avoid writing audio when lagging behind to prevent audio lag */\r
 645         if (PicoSkipFrame != 2)\r
 646                 gp2x_sound_write(PsndOut, len<<1);\r
 647 }\r
 648 \r
 649 \r
 650 static void SkipFrame(int do_audio)\r
 651 {\r
 652         PicoSkipFrame=do_audio ? 1 : 2;\r
 653         PicoFrame();\r
 654         PicoSkipFrame=0;\r
 655 }\r
 656 \r
 657 \r
 658 void emu_forcedFrame(void)\r
 659 {\r
 660         int po_old = PicoOpt;\r
 661         int eo_old = currentConfig.EmuOpt;\r
 662 \r
 663         PicoOpt &= ~0x0010;\r
 664         PicoOpt |=  0x4080; // soft_scale | acc_sprites\r
 665         currentConfig.EmuOpt |= 0x80;\r
 666 \r
 667         //vidResetMode();\r
 668         PicoDrawSetColorFormat(1);\r
 669         PicoScan = EmuScan16;\r
 670         PicoScan(0, 0);\r
 671         Pico.m.dirtyPal = 1;\r
 672         PicoFrameDrawOnly();\r
 673 \r
 674 /*\r
 675         if (!(Pico.video.reg[12]&1)) {\r
 676                 vidCpyM2 = vidCpyM2_32col;\r
 677                 clearArea(1);\r
 678         } else  vidCpyM2 = vidCpyM2_40col;\r
 679 \r
 680         vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
 681         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 682         gp2x_video_setpalette(localPal, 0x40);\r
 683 */\r
 684         PicoOpt = po_old;\r
 685         currentConfig.EmuOpt = eo_old;\r
 686 }\r
 687 \r
 688 static void simpleWait(int thissec, int lim_time)\r
 689 {\r
 690         struct timeval tval;\r
 691 \r
 692         spend_cycles(1024);\r
 693         gettimeofday(&tval, 0);\r
 694         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 695 \r
 696         while(tval.tv_usec < lim_time)\r
 697         {\r
 698                 spend_cycles(1024);\r
 699                 gettimeofday(&tval, 0);\r
 700                 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 701         }\r
 702 }\r
 703 \r
 704 \r
 705 void emu_Loop(void)\r
 706 {\r
 707         static int gp2x_old_clock = 200;\r
 708         static int PsndRate_old = 0, PicoOpt_old = 0, EmuOpt_old = 0, pal_old = 0;\r
 709         char fpsbuff[24]; // fps count c string\r
 710         struct timeval tval; // timing\r
 711         int thissec = 0, frames_done = 0, frames_shown = 0, oldmodes = 0;\r
 712         int target_fps, target_frametime, lim_time, vsync_offset, i;\r
 713         char *notice = 0;\r
 714 \r
 715         printf("entered emu_Loop()\n");\r
 716 \r
 717         if (gp2x_old_clock != currentConfig.CPUclock) {\r
 718                 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
 719                 set_FCLK(currentConfig.CPUclock);\r
 720                 gp2x_old_clock = currentConfig.CPUclock;\r
 721                 printf(" done\n");\r
 722         }\r
 723 \r
 724         if (gp2x_old_gamma != currentConfig.gamma || (EmuOpt_old&0x1000) != (currentConfig.EmuOpt&0x1000)) {\r
 725                 set_gamma(currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
 726                 gp2x_old_gamma = currentConfig.gamma;\r
 727                 printf("updated gamma to %i, A_SN's curve: %i\n", currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
 728         }\r
 729 \r
 730         if ((EmuOpt_old&0x2000) != (currentConfig.EmuOpt&0x2000)) {\r
 731                 if (currentConfig.EmuOpt&0x2000)\r
 732                      set_LCD_custom_rate(Pico.m.pal ? LCDR_100 : LCDR_120);\r
 733                 else unset_LCD_custom_rate();\r
 734         }\r
 735 \r
 736         EmuOpt_old = currentConfig.EmuOpt;\r
 737         fpsbuff[0] = 0;\r
 738 \r
 739         // make sure we are in correct mode\r
 740         vidResetMode();\r
 741         scaling_update();\r
 742         Pico.m.dirtyPal = 1;\r
 743         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
 744         find_combos();\r
 745 \r
 746         // pal/ntsc might have changed, reset related stuff\r
 747         target_fps = Pico.m.pal ? 50 : 60;\r
 748         target_frametime = 1000000/target_fps;\r
 749         reset_timing = 1;\r
 750 \r
 751         // prepare sound stuff\r
 752         if (currentConfig.EmuOpt & 4)\r
 753         {\r
 754                 int snd_excess_add;\r
 755                 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old ||\r
 756                                 ((PicoOpt&0x200) && crashed_940)) {\r
 757                         PsndRerate(Pico.m.frame_count ? 1 : 0);\r
 758                 }\r
 759                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
 760                 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
 761                         PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
 762                 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
 763                 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
 764                 PicoWriteSound = updateSound;\r
 765                 update_volume(0, 0);\r
 766                 memset(sndBuffer, 0, sizeof(sndBuffer));\r
 767                 PsndOut = sndBuffer;\r
 768                 PsndRate_old = PsndRate;\r
 769                 PicoOpt_old  = PicoOpt;\r
 770                 pal_old = Pico.m.pal;\r
 771         } else {\r
 772                 PsndOut = NULL;\r
 773         }\r
 774 \r
 775         // prepare CD buffer\r
 776         if (PicoMCD & 1) PicoCDBufferInit();\r
 777 \r
 778         // calc vsync offset to sync timing code with vsync\r
 779         if (currentConfig.EmuOpt&0x2000) {\r
 780                 gettimeofday(&tval, 0);\r
 781                 gp2x_video_wait_vsync();\r
 782                 gettimeofday(&tval, 0);\r
 783                 vsync_offset = tval.tv_usec;\r
 784                 while (vsync_offset >= target_frametime)\r
 785                         vsync_offset -= target_frametime;\r
 786                 if (!vsync_offset) vsync_offset++;\r
 787                 printf("vsync_offset: %i\n", vsync_offset);\r
 788         } else\r
 789                 vsync_offset = 0;\r
 790 \r
 791         // loop?\r
 792         while (engineState == PGS_Running)\r
 793         {\r
 794                 int modes;\r
 795 \r
 796                 gettimeofday(&tval, 0);\r
 797                 if (reset_timing) {\r
 798                         reset_timing = 0;\r
 799                         thissec = tval.tv_sec;\r
 800                         frames_shown = frames_done = tval.tv_usec/target_frametime;\r
 801                 }\r
 802 \r
 803                 // show notice message?\r
 804                 if (noticeMsgTime.tv_sec)\r
 805                 {\r
 806                         static int noticeMsgSum;\r
 807                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
 808                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
 809                                 clearArea(0);\r
 810                                 notice = 0;\r
 811                         } else {\r
 812                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
 813                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
 814                                 notice = noticeMsg;\r
 815                         }\r
 816                 }\r
 817 \r
 818                 // check for mode changes\r
 819                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
 820                 if (modes != oldmodes)\r
 821                 {\r
 822                         int scalex = 320;\r
 823                         osd_fps_x = OSD_FPS_X;\r
 824                         if (modes & 4) {\r
 825                                 vidCpyM2 = vidCpyM2_40col;\r
 826                         } else {\r
 827                                 if (PicoOpt & 0x100) {\r
 828                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
 829                                         scalex = 256;\r
 830                                         osd_fps_x = OSD_FPS_X - 64;\r
 831                                 } else {\r
 832                                         vidCpyM2 = vidCpyM2_32col;\r
 833                                 }\r
 834                         }\r
 835                         if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
 836                              gp2x_video_RGB_setscaling(8, scalex, 224);\r
 837                         else gp2x_video_RGB_setscaling(0, scalex, 240);\r
 838                         oldmodes = modes;\r
 839                         clearArea(1);\r
 840                 }\r
 841 \r
 842                 // second changed?\r
 843                 if (thissec != tval.tv_sec)\r
 844                 {\r
 845 #ifdef BENCHMARK\r
 846                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
 847                         if (++bench == 10) {\r
 848                                 bench = 0;\r
 849                                 bench_fps_s = bench_fps;\r
 850                                 bf[bfp++ & 3] = bench_fps;\r
 851                                 bench_fps = 0;\r
 852                         }\r
 853                         bench_fps += frames_shown;\r
 854                         sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
 855 #else\r
 856                         if (currentConfig.EmuOpt & 2)\r
 857                                 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
 858                         if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
 859 #endif\r
 860                         thissec = tval.tv_sec;\r
 861 \r
 862                         if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
 863                                 frames_done = frames_shown = 0;\r
 864                         } else {\r
 865                                 // it is quite common for this implementation to leave 1 fame unfinished\r
 866                                 // when second changes, but we don't want buffer to starve.\r
 867                                 if(PsndOut && frames_done < target_fps && frames_done > target_fps-5) {\r
 868                                         updateKeys();\r
 869                                         SkipFrame(1); frames_done++;\r
 870                                 }\r
 871 \r
 872                                 frames_done  -= target_fps; if (frames_done  < 0) frames_done  = 0;\r
 873                                 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;\r
 874                                 if (frames_shown > frames_done) frames_shown = frames_done;\r
 875                         }\r
 876                 }\r
 877 #ifdef PFRAMES\r
 878                 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
 879 #endif\r
 880 \r
 881                 lim_time = (frames_done+1) * target_frametime + vsync_offset;\r
 882                 if(currentConfig.Frameskip >= 0) { // frameskip enabled\r
 883                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
 884                                 updateKeys();\r
 885                                 SkipFrame(1); frames_done++;\r
 886                                 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
 887                                         gettimeofday(&tval, 0);\r
 888                                         if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 889                                         if(tval.tv_usec < lim_time) { // we are too fast\r
 890                                                 simpleWait(thissec, lim_time);\r
 891                                         }\r
 892                                 }\r
 893                                 lim_time += target_frametime;\r
 894                         }\r
 895                 } else if(tval.tv_usec > lim_time) { // auto frameskip\r
 896                         // no time left for this frame - skip\r
 897                         if (tval.tv_usec - lim_time >= 300000) {\r
 898                                 /* something caused a slowdown for us (disk access? cache flush?)\r
 899                                  * try to recover by resetting timing... */\r
 900                                 reset_timing = 1;\r
 901                                 continue;\r
 902                         }\r
 903                         updateKeys();\r
 904                         SkipFrame(tval.tv_usec < lim_time+target_frametime*2); frames_done++;\r
 905                         continue;\r
 906                 }\r
 907 \r
 908                 updateKeys();\r
 909                 PicoFrame();\r
 910 \r
 911 #if 0\r
 912 if (Pico.m.frame_count == 31563) {\r
 913         FILE *f;\r
 914         f = fopen("ram_p.bin", "wb");\r
 915         if (!f) { printf("!f\n"); exit(1); }\r
 916         fwrite(Pico.ram, 1, 0x10000, f);\r
 917         fclose(f);\r
 918         exit(0);\r
 919 }\r
 920 #endif\r
 921 #if 0\r
 922                 // debug\r
 923                 {\r
 924                         #define BYTE unsigned char\r
 925                         #define WORD unsigned short\r
 926                         struct\r
 927                         {\r
 928                                 BYTE IDLength;        /* 00h  Size of Image ID field */\r
 929                                 BYTE ColorMapType;    /* 01h  Color map type */\r
 930                                 BYTE ImageType;       /* 02h  Image type code */\r
 931                                 WORD CMapStart;       /* 03h  Color map origin */\r
 932                                 WORD CMapLength;      /* 05h  Color map length */\r
 933                                 BYTE CMapDepth;       /* 07h  Depth of color map entries */\r
 934                                 WORD XOffset;         /* 08h  X origin of image */\r
 935                                 WORD YOffset;         /* 0Ah  Y origin of image */\r
 936                                 WORD Width;           /* 0Ch  Width of image */\r
 937                                 WORD Height;          /* 0Eh  Height of image */\r
 938                                 BYTE PixelDepth;      /* 10h  Image pixel size */\r
 939                                 BYTE ImageDescriptor; /* 11h  Image descriptor byte */\r
 940                         } __attribute__((packed)) TGAHEAD;\r
 941                         static unsigned short oldscr[320*240];\r
 942                         FILE *f; char name[128]; int i;\r
 943 \r
 944                         memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
 945                         TGAHEAD.ImageType = 2;\r
 946                         TGAHEAD.Width = 320;\r
 947                         TGAHEAD.Height = 240;\r
 948                         TGAHEAD.PixelDepth = 16;\r
 949                         TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
 950 \r
 951                         #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
 952 \r
 953                         for (i = 0; i < 320*240; i++)\r
 954                                 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
 955                         if (i < 320*240)\r
 956                         {\r
 957                                 for (i = 0; i < 320*240; i++)\r
 958                                         oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
 959                                 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
 960                                 f = fopen(name, "wb");\r
 961                                 if (!f) { printf("!f\n"); exit(1); }\r
 962                                 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
 963                                 fwrite(oldscr, 1, 320*240*2, f);\r
 964                                 fclose(f);\r
 965                         }\r
 966                 }\r
 967 #endif\r
 968 \r
 969                 // check time\r
 970                 gettimeofday(&tval, 0);\r
 971                 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 972 \r
 973                 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
 974                         reset_timing = 1;\r
 975                 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
 976                 {\r
 977                         // sleep or vsync if we are still too fast\r
 978                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
 979                         if (!reset_timing && tval.tv_usec < lim_time)\r
 980                         {\r
 981                                 // we are too fast\r
 982                                 if (vsync_offset) {\r
 983                                         if (lim_time - tval.tv_usec > target_frametime/2)\r
 984                                                 simpleWait(thissec, lim_time - target_frametime/4);\r
 985                                         gp2x_video_wait_vsync();\r
 986                                 } else {\r
 987                                         simpleWait(thissec, lim_time);\r
 988                                 }\r
 989                         }\r
 990                 }\r
 991 \r
 992                 blit(fpsbuff, notice);\r
 993 \r
 994                 frames_done++; frames_shown++;\r
 995         }\r
 996 \r
 997         change_fast_forward(0);\r
 998 \r
 999         if (PicoMCD & 1) PicoCDBufferFree();\r
1000 \r
1001         // save SRAM\r
1002         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1003                 emu_state_cb("Writing SRAM/BRAM..");\r
1004                 emu_SaveLoadGame(0, 1);\r
1005                 SRam.changed = 0;\r
1006         }\r
1007 \r
1008         // if in 8bit mode, generate 16bit image for menu background\r
1009         if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
1010                 emu_forcedFrame();\r
1011 }\r
1012 \r
1013 \r
1014 void emu_ResetGame(void)\r
1015 {\r
1016         PicoReset(0);\r
1017         reset_timing = 1;\r
1018 }\r
1019 \r
1020 \r