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