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