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