psp/emu.c

   1 // (c) Copyright 2007 notaz, All rights reserved.
   2 // Free for non-commercial use.
   3
   4 // For commercial use, separate licencing terms must be obtained.
   5
   6 #include <sys/stat.h>
   7 #include <sys/types.h>
   8 #include <sys/syslimits.h> // PATH_MAX
   9
  10 #include <pspthreadman.h>
  11 #include <pspdisplay.h>
  12 #include <psputils.h>
  13 #include <pspgu.h>
  14 #include <pspaudio.h>
  15
  16 #include "psp.h"
  17 #include "menu.h"
  18 #include "emu.h"
  19 #include "mp3.h"
  20 #include "asm_utils.h"
  21 #include "../common/emu.h"
  22 #include "../common/config.h"
  23 #include "../common/lprintf.h"
  24 #include "../../Pico/PicoInt.h"
  25 #include "../../Pico/cd/cue.h"
  26
  27 #define OSD_FPS_X 432
  28
  29 // additional pspaudio imports, credits to crazyc
  30 int sceAudio_38553111(unsigned short samples, unsigned short freq, char unknown);  // play with conversion?
  31 int sceAudio_5C37C0AE(void);                            // end play?
  32 int sceAudio_E0727056(int volume, void *buffer);        // blocking output
  33 int sceAudioOutput2GetRestSample();
  34
  35
  36 char romFileName[PATH_MAX];
  37 unsigned char *PicoDraw2FB = (unsigned char *)VRAM_CACHED_STUFF + 8; // +8 to be able to skip border with 1 quadword..
  38 int engineState = PGS_Menu, engineStateSuspend;
  39
  40 static unsigned int noticeMsgTime = 0;
  41 int reset_timing = 0; // do we need this?
  42
  43 #define PICO_PEN_ADJUST_X 4
  44 #define PICO_PEN_ADJUST_Y 2
  45 static int pico_pen_x = 320/2, pico_pen_y = 240/2;
  46
  47 static void sound_init(void);
  48 static void sound_deinit(void);
  49 static void blit2(const char *fps, const char *notice, int lagging_behind);
  50 static void clearArea(int full);
  51
  52 void emu_noticeMsgUpdated(void)
  53 {
  54         noticeMsgTime = sceKernelGetSystemTimeLow();
  55 }
  56
  57 void emu_getMainDir(char *dst, int len)
  58 {
  59         if (len > 0) *dst = 0;
  60 }
  61
  62 static void osd_text(int x, const char *text, int is_active, int clear_all)
  63 {
  64         unsigned short *screen = is_active ? psp_video_get_active_fb() : psp_screen;
  65         int len = clear_all ? (480 / 2) : (strlen(text) * 8 / 2);
  66         int *p, h;
  67         void *tmp;
  68         for (h = 0; h < 8; h++) {
  69                 p = (int *) (screen+x+512*(264+h));
  70                 p = (int *) ((int)p & ~3); // align
  71                 memset32_uncached(p, 0, len);
  72         }
  73         if (is_active) { tmp = psp_screen; psp_screen = screen; } // nasty pointer tricks
  74         emu_textOut16(x, 264, text);
  75         if (is_active) psp_screen = tmp;
  76 }
  77
  78 void emu_msg_cb(const char *msg)
  79 {
  80         osd_text(4, msg, 1, 1);
  81         noticeMsgTime = sceKernelGetSystemTimeLow() - 2000000;
  82
  83         /* assumption: emu_msg_cb gets called only when something slow is about to happen */
  84         reset_timing = 1;
  85 }
  86
  87 static void emu_msg_tray_open(void)
  88 {
  89         strcpy(noticeMsg, "CD tray opened");
  90         noticeMsgTime = sceKernelGetSystemTimeLow();
  91 }
  92
  93
  94 void emu_Init(void)
  95 {
  96         // make dirs for saves, cfgs, etc.
  97         mkdir("mds", 0777);
  98         mkdir("srm", 0777);
  99         mkdir("brm", 0777);
 100         mkdir("cfg", 0777);
 101
 102         sound_init();
 103
 104         PicoInit();
 105         PicoMessage = emu_msg_cb;
 106         PicoMCDopenTray = emu_msg_tray_open;
 107         PicoMCDcloseTray = menu_loop_tray;
 108 }
 109
 110 void emu_Deinit(void)
 111 {
 112         // save SRAM
 113         if ((currentConfig.EmuOpt & 1) && SRam.changed) {
 114                 emu_SaveLoadGame(0, 1);
 115                 SRam.changed = 0;
 116         }
 117
 118         if (!(currentConfig.EmuOpt & 0x20))
 119                 config_writelrom(PicoConfigFile);
 120
 121         PicoExit();
 122         sound_deinit();
 123 }
 124
 125 void emu_prepareDefaultConfig(void)
 126 {
 127         memset(&defaultConfig, 0, sizeof(defaultConfig));
 128         defaultConfig.EmuOpt    = 0x1d | 0x680; // | <- confirm_save, cd_leds, acc rend
 129         defaultConfig.s_PicoOpt = 0x0f | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX|POPT_ACC_SPRITES;
 130         defaultConfig.s_PsndRate = 22050;
 131         defaultConfig.s_PicoRegion = 0; // auto
 132         defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP
 133         defaultConfig.s_PicoCDBuffers = 64;
 134         defaultConfig.Frameskip = -1; // auto
 135         defaultConfig.CPUclock = 333;
 136         defaultConfig.KeyBinds[ 4] = 1<<0; // SACB RLDU
 137         defaultConfig.KeyBinds[ 6] = 1<<1;
 138         defaultConfig.KeyBinds[ 7] = 1<<2;
 139         defaultConfig.KeyBinds[ 5] = 1<<3;
 140         defaultConfig.KeyBinds[14] = 1<<4;
 141         defaultConfig.KeyBinds[13] = 1<<5;
 142         defaultConfig.KeyBinds[15] = 1<<6;
 143         defaultConfig.KeyBinds[ 3] = 1<<7;
 144         defaultConfig.KeyBinds[12] = 1<<26; // switch rnd
 145         defaultConfig.KeyBinds[ 8] = 1<<27; // save state
 146         defaultConfig.KeyBinds[ 9] = 1<<28; // load state
 147         defaultConfig.KeyBinds[28] = 1<<0; // num "buttons"
 148         defaultConfig.KeyBinds[30] = 1<<1;
 149         defaultConfig.KeyBinds[31] = 1<<2;
 150         defaultConfig.KeyBinds[29] = 1<<3;
 151         defaultConfig.scaling = 1;     // bilinear filtering for psp
 152         defaultConfig.scale = 1.20;    // fullscreen
 153         defaultConfig.hscale40 = 1.25;
 154         defaultConfig.hscale32 = 1.56;
 155         defaultConfig.turbo_rate = 15;
 156 }
 157
 158 void emu_setDefaultConfig(void)
 159 {
 160         memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));
 161         PicoOpt = currentConfig.s_PicoOpt;
 162         PsndRate = currentConfig.s_PsndRate;
 163         PicoRegionOverride = currentConfig.s_PicoRegion;
 164         PicoAutoRgnOrder = currentConfig.s_PicoAutoRgnOrder;
 165         PicoCDBuffers = currentConfig.s_PicoCDBuffers;
 166 }
 167
 168
 169 extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
 170 extern void amips_clut_6bit(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
 171
 172 static void (*amips_clut_f)(unsigned short *dst, unsigned char *src, unsigned short *pal, int count) = NULL;
 173
 174 struct Vertex
 175 {
 176         short u,v;
 177         short x,y,z;
 178 };
 179
 180 static struct Vertex __attribute__((aligned(4))) g_vertices[2];
 181 static unsigned short __attribute__((aligned(16))) localPal[0x100];
 182 static int dynamic_palette = 0, need_pal_upload = 0, blit_16bit_mode = 0;
 183 static int fbimg_offs = 0;
 184
 185 static void set_scaling_params(void)
 186 {
 187         int src_width, fbimg_width, fbimg_height, fbimg_xoffs, fbimg_yoffs, border_hack = 0;
 188         g_vertices[0].x = g_vertices[0].y =
 189         g_vertices[0].z = g_vertices[1].z = 0;
 190
 191         fbimg_height = (int)(240.0 * currentConfig.scale + 0.5);
 192         if (Pico.video.reg[12] & 1) {
 193                 fbimg_width = (int)(320.0 * currentConfig.scale * currentConfig.hscale40 + 0.5);
 194                 src_width = 320;
 195         } else {
 196                 fbimg_width = (int)(256.0 * currentConfig.scale * currentConfig.hscale32 + 0.5);
 197                 src_width = 256;
 198         }
 199
 200         if (fbimg_width  & 1) fbimg_width++;  // make even
 201         if (fbimg_height & 1) fbimg_height++;
 202
 203         if (fbimg_width >= 480) {
 204                 g_vertices[0].u = (fbimg_width-480)/2;
 205                 g_vertices[1].u = src_width - (fbimg_width-480)/2 - 1;
 206                 fbimg_width = 480;
 207                 fbimg_xoffs = 0;
 208         } else {
 209                 g_vertices[0].u = 0;
 210                 g_vertices[1].u = src_width;
 211                 fbimg_xoffs = 240 - fbimg_width/2;
 212         }
 213         if (fbimg_width > 320 && fbimg_width <= 480) border_hack = 1;
 214
 215         if (fbimg_height >= 272) {
 216                 g_vertices[0].v = (fbimg_height-272)/2;
 217                 g_vertices[1].v = 240 - (fbimg_height-272)/2;
 218                 fbimg_height = 272;
 219                 fbimg_yoffs = 0;
 220         } else {
 221                 g_vertices[0].v = 0;
 222                 g_vertices[1].v = 240;
 223                 fbimg_yoffs = 136 - fbimg_height/2;
 224         }
 225
 226         g_vertices[1].x = fbimg_width;
 227         g_vertices[1].y = fbimg_height;
 228         if (fbimg_xoffs < 0) fbimg_xoffs = 0;
 229         if (fbimg_yoffs < 0) fbimg_yoffs = 0;
 230         if (border_hack) {
 231                 g_vertices[0].u++;
 232                 g_vertices[0].x++;
 233                 g_vertices[1].u--;
 234                 g_vertices[1].x--;
 235         }
 236         fbimg_offs = (fbimg_yoffs*512 + fbimg_xoffs) * 2; // dst is always 16bit
 237
 238         /*
 239         lprintf("set_scaling_params:\n");
 240         lprintf("offs: %i, %i\n", fbimg_xoffs, fbimg_yoffs);
 241         lprintf("xy0, xy1: %i, %i; %i, %i\n", g_vertices[0].x, g_vertices[0].y, g_vertices[1].x, g_vertices[1].y);
 242         lprintf("uv0, uv1: %i, %i; %i, %i\n", g_vertices[0].u, g_vertices[0].v, g_vertices[1].u, g_vertices[1].v);
 243         */
 244 }
 245
 246 static void do_pal_update(int allow_sh, int allow_as)
 247 {
 248         unsigned int *dpal=(void *)localPal;
 249         int i;
 250
 251         //for (i = 0x3f/2; i >= 0; i--)
 252         //      dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
 253         do_pal_convert(localPal, Pico.cram, currentConfig.gamma, currentConfig.gamma2);
 254
 255         Pico.m.dirtyPal = 0;
 256         need_pal_upload = 1;
 257
 258         if (allow_sh && (Pico.video.reg[0xC]&8)) // shadow/hilight?
 259         {
 260                 // shadowed pixels
 261                 for (i = 0x3f/2; i >= 0; i--)
 262                         dpal[0x20|i] = dpal[0x60|i] = (dpal[i]>>1)&0x7bcf7bcf;
 263                 // hilighted pixels
 264                 for (i = 0x3f; i >= 0; i--) {
 265                         int t=localPal[i]&0xf79e;t+=0x4208;
 266                         if (t&0x20) t|=0x1e;
 267                         if (t&0x800) t|=0x780;
 268                         if (t&0x10000) t|=0xf000;
 269                         t&=0xf79e;
 270                         localPal[0x80|i]=(unsigned short)t;
 271                 }
 272                 localPal[0xe0] = 0;
 273                 localPal[0xf0] = 0x001f;
 274         }
 275         else if (allow_as && (rendstatus & PDRAW_ACC_SPRITES))
 276         {
 277                 memcpy32((int *)(void *)(localPal+0x80), (void *)localPal, 0x40/2);
 278         }
 279 }
 280
 281 static void do_slowmode_lines(int line_to)
 282 {
 283         int line = 0, line_len = (Pico.video.reg[12]&1) ? 320 : 256;
 284         unsigned short *dst = (unsigned short *)VRAM_STUFF + 512*240/2;
 285         unsigned char  *src = (unsigned char  *)VRAM_CACHED_STUFF + 16;
 286         if (!(Pico.video.reg[1]&8)) { line = 8; dst += 512*8; src += 512*8; }
 287
 288         for (; line < line_to; line++, dst+=512, src+=512)
 289                 amips_clut_f(dst, src, localPal, line_len);
 290 }
 291
 292 static void EmuScanPrepare(void)
 293 {
 294         HighCol = (unsigned char *)VRAM_CACHED_STUFF + 8;
 295         if (!(Pico.video.reg[1]&8)) HighCol += 8*512;
 296
 297         if (dynamic_palette > 0)
 298                 dynamic_palette--;
 299         if (Pico.m.dirtyPal)
 300                 do_pal_update(1, 1);
 301         if ((rendstatus & PDRAW_ACC_SPRITES) && !(Pico.video.reg[0xC]&8))
 302              amips_clut_f = amips_clut_6bit;
 303         else amips_clut_f = amips_clut;
 304 }
 305
 306 static int EmuScanSlowBegin(unsigned int num)
 307 {
 308         if (!(Pico.video.reg[1]&8)) num += 8;
 309
 310         if (!dynamic_palette)
 311                 HighCol = (unsigned char *)VRAM_CACHED_STUFF + num * 512 + 8;
 312
 313         return 0;
 314 }
 315
 316 static int EmuScanSlowEnd(unsigned int num)
 317 {
 318         if (!(Pico.video.reg[1]&8)) num += 8;
 319
 320         if (Pico.m.dirtyPal) {
 321                 if (!dynamic_palette) {
 322                         do_slowmode_lines(num);
 323                         dynamic_palette = 3; // last for 2 more frames
 324                 }
 325                 do_pal_update(1, 0);
 326         }
 327
 328         if (dynamic_palette) {
 329                 int line_len = (Pico.video.reg[12]&1) ? 320 : 256;
 330                 void *dst = (char *)VRAM_STUFF + 512*240 + 512*2*num;
 331                 amips_clut_f(dst, HighCol + 8, localPal, line_len);
 332         }
 333
 334         return 0;
 335 }
 336
 337 static void blitscreen_clut(void)
 338 {
 339         int offs = fbimg_offs;
 340         offs += (psp_screen == VRAM_FB0) ? VRAMOFFS_FB0 : VRAMOFFS_FB1;
 341
 342         sceGuSync(0,0); // sync with prev
 343         sceGuStart(GU_DIRECT, guCmdList);
 344         sceGuDrawBuffer(GU_PSM_5650, (void *)offs, 512); // point to back buffer
 345
 346         if (dynamic_palette)
 347         {
 348                 if (!blit_16bit_mode) { // the current mode is not 16bit
 349                         sceGuTexMode(GU_PSM_5650, 0, 0, 0);
 350                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 512*240);
 351
 352                         blit_16bit_mode = 1;
 353                 }
 354         }
 355         else
 356         {
 357                 if (blit_16bit_mode) {
 358                         sceGuClutMode(GU_PSM_5650,0,0xff,0);
 359                         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
 360                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
 361                         blit_16bit_mode = 0;
 362                 }
 363
 364                 if ((PicoOpt&0x10) && Pico.m.dirtyPal)
 365                         do_pal_update(0, 0);
 366
 367                 sceKernelDcacheWritebackAll();
 368
 369                 if (need_pal_upload) {
 370                         need_pal_upload = 0;
 371                         sceGuClutLoad((256/8), localPal); // upload 32*8 entries (256)
 372                 }
 373         }
 374
 375 #if 1
 376         if (g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x)
 377         {
 378                 struct Vertex* vertices;
 379                 int x;
 380
 381                 #define SLICE_WIDTH 32
 382                 for (x = 0; x < g_vertices[1].x; x += SLICE_WIDTH)
 383                 {
 384                         // render sprite
 385                         vertices = (struct Vertex*)sceGuGetMemory(2 * sizeof(struct Vertex));
 386                         memcpy(vertices, g_vertices, 2 * sizeof(struct Vertex));
 387                         vertices[0].u = vertices[0].x = x;
 388                         vertices[1].u = vertices[1].x = x + SLICE_WIDTH;
 389                         sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,vertices);
 390                 }
 391                 // lprintf("listlen: %iB\n", sceGuCheckList()); // ~480 only
 392         }
 393         else
 394 #endif
 395                 sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,g_vertices);
 396
 397         sceGuFinish();
 398 }
 399
 400
 401 static void cd_leds(void)
 402 {
 403         unsigned int reg, col_g, col_r, *p;
 404
 405         reg = Pico_mcd->s68k_regs[0];
 406
 407         p = (unsigned int *)((short *)psp_screen + 512*2+4+2);
 408         col_g = (reg & 2) ? 0x06000600 : 0;
 409         col_r = (reg & 1) ? 0x00180018 : 0;
 410         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
 411         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
 412         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
 413 }
 414
 415 static void draw_pico_ptr(void)
 416 {
 417         unsigned char *p = (unsigned char *)VRAM_STUFF + 16;
 418
 419         // only if pen enabled and for 8bit mode
 420         if (pico_inp_mode == 0 || blit_16bit_mode) return;
 421
 422         p += 512 * (pico_pen_y + PICO_PEN_ADJUST_Y);
 423         p += pico_pen_x + PICO_PEN_ADJUST_X;
 424         p[  -1] = 0xe0; p[   0] = 0xf0; p[   1] = 0xe0;
 425         p[ 511] = 0xf0; p[ 512] = 0xf0; p[ 513] = 0xf0;
 426         p[1023] = 0xe0; p[1024] = 0xf0; p[1025] = 0xe0;
 427 }
 428
 429
 430 #if 0
 431 static void dbg_text(void)
 432 {
 433         int *p, h, len;
 434         char text[128];
 435
 436         sprintf(text, "sl: %i, 16b: %i", g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x, blit_16bit_mode);
 437         len = strlen(text) * 8 / 2;
 438         for (h = 0; h < 8; h++) {
 439                 p = (int *) ((unsigned short *) psp_screen+2+512*(256+h));
 440                 p = (int *) ((int)p & ~3); // align
 441                 memset32_uncached(p, 0, len);
 442         }
 443         emu_textOut16(2, 256, text);
 444 }
 445 #endif
 446
 447 /* called after rendering is done, but frame emulation is not finished */
 448 void blit1(void)
 449 {
 450         if (PicoOpt&0x10)
 451         {
 452                 int i;
 453                 unsigned char *pd;
 454                 // clear top and bottom trash
 455                 for (pd = PicoDraw2FB+8, i = 8; i > 0; i--, pd += 512)
 456                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
 457                 for (pd = PicoDraw2FB+512*232+8, i = 8; i > 0; i--, pd += 512)
 458                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
 459         }
 460
 461         if (PicoAHW & PAHW_PICO)
 462                 draw_pico_ptr();
 463
 464         blitscreen_clut();
 465 }
 466
 467
 468 static void blit2(const char *fps, const char *notice, int lagging_behind)
 469 {
 470         int vsync = 0, emu_opt = currentConfig.EmuOpt;
 471
 472         if (notice || (emu_opt & 2)) {
 473                 if (notice)      osd_text(4, notice, 0, 0);
 474                 if (emu_opt & 2) osd_text(OSD_FPS_X, fps, 0, 0);
 475         }
 476
 477         //dbg_text();
 478
 479         if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))
 480                 cd_leds();
 481
 482         if (currentConfig.EmuOpt & 0x2000) { // want vsync
 483                 if (!(currentConfig.EmuOpt & 0x10000) || !lagging_behind) vsync = 1;
 484         }
 485
 486         psp_video_flip(vsync);
 487 }
 488
 489 // clears whole screen or just the notice area (in all buffers)
 490 static void clearArea(int full)
 491 {
 492         if (full) {
 493                 memset32_uncached(psp_screen, 0, 512*272*2/4);
 494                 psp_video_flip(0);
 495                 memset32_uncached(psp_screen, 0, 512*272*2/4);
 496                 memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*240/4);
 497                 memset32((int *)VRAM_CACHED_STUFF+512*240/4, 0, 512*240*2/4);
 498         } else {
 499                 void *fb = psp_video_get_active_fb();
 500                 memset32_uncached((int *)((char *)psp_screen + 512*264*2), 0, 512*8*2/4);
 501                 memset32_uncached((int *)((char *)fb         + 512*264*2), 0, 512*8*2/4);
 502         }
 503 }
 504
 505 static void vidResetMode(void)
 506 {
 507         // setup GU
 508         sceGuSync(0,0); // sync with prev
 509         sceGuStart(GU_DIRECT, guCmdList);
 510
 511         sceGuClutMode(GU_PSM_5650,0,0xff,0);
 512         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
 513         sceGuTexFunc(GU_TFX_REPLACE,GU_TCC_RGB);
 514         if (currentConfig.scaling)
 515              sceGuTexFilter(GU_LINEAR, GU_LINEAR);
 516         else sceGuTexFilter(GU_NEAREST, GU_NEAREST);
 517         sceGuTexScale(1.0f,1.0f);
 518         sceGuTexOffset(0.0f,0.0f);
 519
 520         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
 521
 522         // slow rend.
 523         PicoDrawSetColorFormat(-1);
 524         PicoScanBegin = EmuScanSlowBegin;
 525         PicoScanEnd = EmuScanSlowEnd;
 526
 527         localPal[0xe0] = 0;
 528         localPal[0xf0] = 0x001f;
 529         Pico.m.dirtyPal = 1;
 530         blit_16bit_mode = dynamic_palette = 0;
 531
 532         sceGuFinish();
 533         set_scaling_params();
 534         sceGuSync(0,0);
 535 }
 536
 537
 538 /* sound stuff */
 539 #define SOUND_BLOCK_SIZE_NTSC (1470*2) // 1024 // 1152
 540 #define SOUND_BLOCK_SIZE_PAL  (1764*2)
 541 #define SOUND_BLOCK_COUNT    8
 542
 543 static short __attribute__((aligned(4))) sndBuffer[SOUND_BLOCK_SIZE_PAL*SOUND_BLOCK_COUNT + 44100/50*2];
 544 static short *snd_playptr = NULL, *sndBuffer_endptr = NULL;
 545 static int samples_made = 0, samples_done = 0, samples_block = 0;
 546 static int sound_thread_exit = 0;
 547 static SceUID sound_sem = -1;
 548
 549 static void writeSound(int len);
 550
 551 static int sound_thread(SceSize args, void *argp)
 552 {
 553         int ret = 0;
 554
 555         lprintf("sthr: started, priority %i\n", sceKernelGetThreadCurrentPriority());
 556
 557         while (!sound_thread_exit)
 558         {
 559                 if (samples_made - samples_done < samples_block) {
 560                         // wait for data (use at least 2 blocks)
 561                         //lprintf("sthr: wait... (%i)\n", samples_made - samples_done);
 562                         while (samples_made - samples_done <= samples_block*2 && !sound_thread_exit)
 563                                 ret = sceKernelWaitSema(sound_sem, 1, 0);
 564                         if (ret < 0) lprintf("sthr: sceKernelWaitSema: %i\n", ret);
 565                         continue;
 566                 }
 567
 568                 // lprintf("sthr: got data: %i\n", samples_made - samples_done);
 569
 570                 ret = sceAudio_E0727056(PSP_AUDIO_VOLUME_MAX, snd_playptr);
 571
 572                 samples_done += samples_block;
 573                 snd_playptr  += samples_block;
 574                 if (snd_playptr >= sndBuffer_endptr)
 575                         snd_playptr = sndBuffer;
 576                 // 1.5 kernel returns 0, newer ones return # of samples queued
 577                 if (ret < 0)
 578                         lprintf("sthr: sceAudio_E0727056: %08x; pos %i/%i\n", ret, samples_done, samples_made);
 579
 580                 // shouln't happen, but just in case
 581                 if (samples_made - samples_done >= samples_block*3) {
 582                         //lprintf("sthr: block skip (%i)\n", samples_made - samples_done);
 583                         samples_done += samples_block; // skip
 584                         snd_playptr  += samples_block;
 585                 }
 586
 587         }
 588
 589         lprintf("sthr: exit\n");
 590         sceKernelExitDeleteThread(0);
 591         return 0;
 592 }
 593
 594 static void sound_init(void)
 595 {
 596         SceUID thid;
 597         int ret;
 598
 599         sound_sem = sceKernelCreateSema("sndsem", 0, 0, 1, NULL);
 600         if (sound_sem < 0) lprintf("sceKernelCreateSema() failed: %i\n", sound_sem);
 601
 602         samples_made = samples_done = 0;
 603         samples_block = SOUND_BLOCK_SIZE_NTSC; // make sure it goes to sema
 604         sound_thread_exit = 0;
 605         thid = sceKernelCreateThread("sndthread", sound_thread, 0x12, 0x10000, 0, NULL);
 606         if (thid >= 0)
 607         {
 608                 ret = sceKernelStartThread(thid, 0, 0);
 609                 if (ret < 0) lprintf("sound_init: sceKernelStartThread returned %08x\n", ret);
 610         }
 611         else
 612                 lprintf("sceKernelCreateThread failed: %i\n", thid);
 613 }
 614
 615 static void sound_prepare(void)
 616 {
 617         static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
 618         int ret, stereo;
 619
 620         samples_made = samples_done = 0;
 621
 622         if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
 623                 PsndRerate(Pico.m.frame_count ? 1 : 0);
 624         }
 625         stereo=(PicoOpt&8)>>3;
 626
 627         samples_block = Pico.m.pal ? SOUND_BLOCK_SIZE_PAL : SOUND_BLOCK_SIZE_NTSC;
 628         if (PsndRate <= 22050) samples_block /= 2;
 629         sndBuffer_endptr = &sndBuffer[samples_block*SOUND_BLOCK_COUNT];
 630
 631         lprintf("starting audio: %i, len: %i, stereo: %i, pal: %i, block samples: %i\n",
 632                         PsndRate, PsndLen, stereo, Pico.m.pal, samples_block);
 633
 634         // while (sceAudioOutput2GetRestSample() > 0) psp_msleep(100);
 635         // sceAudio_5C37C0AE();
 636         ret = sceAudio_38553111(samples_block/2, PsndRate, 2); // seems to not need that stupid 64byte alignment
 637         if (ret < 0) {
 638                 lprintf("sceAudio_38553111() failed: %i\n", ret);
 639                 sprintf(noticeMsg, "sound init failed (%i), snd disabled", ret);
 640                 noticeMsgTime = sceKernelGetSystemTimeLow();
 641                 currentConfig.EmuOpt &= ~4;
 642         } else {
 643                 PicoWriteSound = writeSound;
 644                 memset32((int *)(void *)sndBuffer, 0, sizeof(sndBuffer)/4);
 645                 snd_playptr = sndBuffer_endptr - samples_block;
 646                 samples_made = samples_block; // send 1 empty block first..
 647                 PsndOut = sndBuffer;
 648                 PsndRate_old = PsndRate;
 649                 PicoOpt_old  = PicoOpt;
 650                 pal_old = Pico.m.pal;
 651         }
 652 }
 653
 654 static void sound_end(void)
 655 {
 656         int i;
 657         if (samples_done == 0)
 658         {
 659                 // if no data is written between sceAudio_38553111 and sceAudio_5C37C0AE calls,
 660                 // we get a deadlock on next sceAudio_38553111 call
 661                 // so this is yet another workaround:
 662                 memset32((int *)(void *)sndBuffer, 0, samples_block*4/4);
 663                 samples_made = samples_block * 3;
 664                 sceKernelSignalSema(sound_sem, 1);
 665         }
 666         sceKernelDelayThread(100*1000);
 667         samples_made = samples_done = 0;
 668         for (i = 0; sceAudioOutput2GetRestSample() > 0 && i < 16; i++)
 669                 psp_msleep(100);
 670         sceAudio_5C37C0AE();
 671 }
 672
 673 static void sound_deinit(void)
 674 {
 675         sound_thread_exit = 1;
 676         sceKernelSignalSema(sound_sem, 1);
 677         sceKernelDeleteSema(sound_sem);
 678         sound_sem = -1;
 679 }
 680
 681 static void writeSound(int len)
 682 {
 683         int ret;
 684         if (PicoOpt&8) len<<=1;
 685
 686         PsndOut += len;
 687         /*if (PsndOut > sndBuffer_endptr) {
 688                 memcpy32((int *)(void *)sndBuffer, (int *)endptr, (PsndOut - endptr + 1) / 2);
 689                 PsndOut = &sndBuffer[PsndOut - endptr];
 690                 lprintf("mov\n");
 691         }
 692         else*/
 693         if (PsndOut > sndBuffer_endptr) lprintf("snd oflow %i!\n", PsndOut - sndBuffer_endptr);
 694         if (PsndOut >= sndBuffer_endptr)
 695                 PsndOut = sndBuffer;
 696
 697         // signal the snd thread
 698         samples_made += len;
 699         if (samples_made - samples_done > samples_block*2) {
 700                 // lprintf("signal, %i/%i\n", samples_done, samples_made);
 701                 ret = sceKernelSignalSema(sound_sem, 1);
 702                 //if (ret < 0) lprintf("snd signal ret %08x\n", ret);
 703         }
 704 }
 705
 706
 707 static void SkipFrame(void)
 708 {
 709         PicoSkipFrame=1;
 710         PicoFrame();
 711         PicoSkipFrame=0;
 712 }
 713
 714 void emu_forcedFrame(int opts)
 715 {
 716         int po_old = PicoOpt;
 717         int eo_old = currentConfig.EmuOpt;
 718
 719         PicoOpt &= ~0x10;
 720         PicoOpt |= opts|POPT_ACC_SPRITES;
 721         currentConfig.EmuOpt |= 0x80;
 722
 723         vidResetMode();
 724         memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*8/4); // borders
 725         memset32((int *)VRAM_CACHED_STUFF + 512*232/4, 0xe0e0e0e0, 512*8/4);
 726         memset32_uncached((int *)psp_screen + 512*264*2/4, 0, 512*8*2/4);
 727
 728         PicoDrawSetColorFormat(-1);
 729         PicoScanBegin = EmuScanSlowBegin;
 730         PicoScanEnd = EmuScanSlowEnd;
 731         EmuScanPrepare();
 732         PicoFrameDrawOnly();
 733         blit1();
 734         sceGuSync(0,0);
 735
 736         PicoOpt = po_old;
 737         currentConfig.EmuOpt = eo_old;
 738 }
 739
 740
 741 static void RunEventsPico(unsigned int events, unsigned int keys)
 742 {
 743         emu_RunEventsPico(events);
 744
 745         if (pico_inp_mode != 0)
 746         {
 747                 PicoPad[0] &= ~0x0f; // release UDLR
 748                 if (keys & BTN_UP)   { pico_pen_y--; if (pico_pen_y < 8) pico_pen_y = 8; }
 749                 if (keys & BTN_DOWN) { pico_pen_y++; if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y; }
 750                 if (keys & BTN_LEFT) { pico_pen_x--; if (pico_pen_x < 0) pico_pen_x = 0; }
 751                 if (keys & BTN_RIGHT) {
 752                         int lim = (Pico.video.reg[12]&1) ? 319 : 255;
 753                         pico_pen_x++;
 754                         if (pico_pen_x > lim-PICO_PEN_ADJUST_X)
 755                                 pico_pen_x = lim-PICO_PEN_ADJUST_X;
 756                 }
 757                 PicoPicohw.pen_pos[0] = pico_pen_x;
 758                 if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;
 759                 PicoPicohw.pen_pos[0] += 0x3c;
 760                 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);
 761         }
 762 }
 763
 764 static void RunEvents(unsigned int which)
 765 {
 766         if (which & 0x1800) // save or load (but not both)
 767         {
 768                 int do_it = 1;
 769
 770                 if ( emu_checkSaveFile(state_slot) &&
 771                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load
 772                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) // save
 773                 {
 774                         int keys;
 775                         sceGuSync(0,0);
 776                         blit2("", (which & 0x1000) ? "LOAD STATE? (X=yes, O=no)" : "OVERWRITE SAVE? (X=yes, O=no)", 0);
 777                         while( !((keys = psp_pad_read(1)) & (BTN_X|BTN_CIRCLE)) )
 778                                 psp_msleep(50);
 779                         if (keys & BTN_CIRCLE) do_it = 0;
 780                         while(  ((keys = psp_pad_read(1)) & (BTN_X|BTN_CIRCLE)) ) // wait for release
 781                                 psp_msleep(50);
 782                         clearArea(0);
 783                 }
 784
 785                 if (do_it)
 786                 {
 787                         osd_text(4, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME", 1, 0);
 788                         PicoStateProgressCB = emu_msg_cb;
 789                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);
 790                         PicoStateProgressCB = NULL;
 791                         psp_msleep(0);
 792                 }
 793
 794                 reset_timing = 1;
 795         }
 796         if (which & 0x0400) // switch renderer
 797         {
 798                 if (PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |=  0x80; }
 799                 else              { PicoOpt|= 0x10; currentConfig.EmuOpt &= ~0x80; }
 800
 801                 vidResetMode();
 802
 803                 if (PicoOpt&0x10)
 804                         strcpy(noticeMsg, "fast renderer");
 805                 else if (currentConfig.EmuOpt&0x80)
 806                         strcpy(noticeMsg, "accurate renderer");
 807
 808                 noticeMsgTime = sceKernelGetSystemTimeLow();
 809         }
 810         if (which & 0x0300)
 811         {
 812                 if(which&0x0200) {
 813                         state_slot -= 1;
 814                         if(state_slot < 0) state_slot = 9;
 815                 } else {
 816                         state_slot += 1;
 817                         if(state_slot > 9) state_slot = 0;
 818                 }
 819                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");
 820                 noticeMsgTime = sceKernelGetSystemTimeLow();
 821         }
 822 }
 823
 824 static void updateKeys(void)
 825 {
 826         unsigned int keys, allActions[2] = { 0, 0 }, events;
 827         static unsigned int prevEvents = 0;
 828         int i;
 829
 830         keys = psp_pad_read(0);
 831         if (keys & PSP_CTRL_HOME)
 832                 sceDisplayWaitVblankStart();
 833
 834         if (keys & BTN_SELECT)
 835                 engineState = PGS_Menu;
 836
 837         keys &= CONFIGURABLE_KEYS;
 838
 839         for (i = 0; i < 32; i++)
 840         {
 841                 if (keys & (1 << i))
 842                 {
 843                         int pl, acts = currentConfig.KeyBinds[i];
 844                         if (!acts) continue;
 845                         pl = (acts >> 16) & 1;
 846                         if (kb_combo_keys & (1 << i))
 847                         {
 848                                 int u = i+1, acts_c = acts & kb_combo_acts;
 849                                 // let's try to find the other one
 850                                 if (acts_c) {
 851                                         for (; u < 32; u++)
 852                                                 if ( (keys & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {
 853                                                         allActions[pl] |= acts_c & currentConfig.KeyBinds[u];
 854                                                         keys &= ~((1 << i) | (1 << u));
 855                                                         break;
 856                                                 }
 857                                 }
 858                                 // add non-combo actions if combo ones were not found
 859                                 if (!acts_c || u == 32)
 860                                         allActions[pl] |= acts & ~kb_combo_acts;
 861                         } else {
 862                                 allActions[pl] |= acts;
 863                         }
 864                 }
 865         }
 866
 867         PicoPad[0] = allActions[0] & 0xfff;
 868         PicoPad[1] = allActions[1] & 0xfff;
 869
 870         if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);
 871         if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);
 872
 873         events = (allActions[0] | allActions[1]) >> 16;
 874
 875         if ((events ^ prevEvents) & 0x40) {
 876                 emu_changeFastForward(events & 0x40);
 877                 reset_timing = 1;
 878         }
 879
 880         events &= ~prevEvents;
 881
 882         if (PicoAHW == PAHW_PICO)
 883                 RunEventsPico(events, keys);
 884         if (events) RunEvents(events);
 885         if (movie_data) emu_updateMovie();
 886
 887         prevEvents = (allActions[0] | allActions[1]) >> 16;
 888 }
 889
 890
 891 static void simpleWait(unsigned int until)
 892 {
 893         unsigned int tval;
 894         int diff;
 895
 896         tval = sceKernelGetSystemTimeLow();
 897         diff = (int)until - (int)tval;
 898         if (diff >= 512 && diff < 100*1024)
 899                 sceKernelDelayThread(diff);
 900 }
 901
 902 void emu_Loop(void)
 903 {
 904         static int mp3_init_done = 0;
 905         char fpsbuff[24]; // fps count c string
 906         unsigned int tval, tval_thissec = 0; // timing
 907         int target_fps, target_frametime, lim_time, tval_diff, i, oldmodes = 0;
 908         int pframes_done, pframes_shown; // "period" frames, used for sync
 909         int  frames_done,  frames_shown, tval_fpsc = 0; // actual frames
 910         char *notice = NULL;
 911
 912         lprintf("entered emu_Loop()\n");
 913
 914         fpsbuff[0] = 0;
 915
 916         if (currentConfig.CPUclock != psp_get_cpu_clock()) {
 917                 lprintf("setting cpu clock to %iMHz... ", currentConfig.CPUclock);
 918                 i = psp_set_cpu_clock(currentConfig.CPUclock);
 919                 lprintf(i ? "failed\n" : "done\n");
 920                 currentConfig.CPUclock = psp_get_cpu_clock();
 921         }
 922
 923         // make sure we are in correct mode
 924         vidResetMode();
 925         clearArea(1);
 926         Pico.m.dirtyPal = 1;
 927         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
 928         emu_findKeyBindCombos();
 929
 930         // pal/ntsc might have changed, reset related stuff
 931         target_fps = Pico.m.pal ? 50 : 60;
 932         target_frametime = Pico.m.pal ? (1000000<<8)/50 : (1000000<<8)/60+1;
 933         reset_timing = 1;
 934
 935         if (PicoAHW & PAHW_MCD) {
 936                 // prepare CD buffer
 937                 PicoCDBufferInit();
 938                 // mp3...
 939                 if (!mp3_init_done) {
 940                         i = mp3_init();
 941                         mp3_init_done = 1;
 942                         if (i) { engineState = PGS_Menu; return; }
 943                 }
 944         }
 945
 946         // prepare sound stuff
 947         PsndOut = NULL;
 948         if (currentConfig.EmuOpt & 4)
 949         {
 950                 sound_prepare();
 951         }
 952
 953         sceDisplayWaitVblankStart();
 954         pframes_shown = pframes_done =
 955          frames_shown =  frames_done = 0;
 956
 957         tval_fpsc = sceKernelGetSystemTimeLow();
 958
 959         // loop?
 960         while (engineState == PGS_Running)
 961         {
 962                 int modes;
 963
 964                 tval = sceKernelGetSystemTimeLow();
 965                 if (reset_timing || tval < tval_fpsc) {
 966                         //stdbg("timing reset");
 967                         reset_timing = 0;
 968                         tval_thissec = tval;
 969                         pframes_shown = pframes_done = 0;
 970                 }
 971
 972                 // show notice message?
 973                 if (noticeMsgTime) {
 974                         static int noticeMsgSum;
 975                         if (tval - noticeMsgTime > 2000000) { // > 2.0 sec
 976                                 noticeMsgTime = 0;
 977                                 clearArea(0);
 978                                 notice = 0;
 979                         } else {
 980                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
 981                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
 982                                 notice = noticeMsg;
 983                         }
 984                 }
 985
 986                 // check for mode changes
 987                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
 988                 if (modes != oldmodes) {
 989                         oldmodes = modes;
 990                         clearArea(1);
 991                         set_scaling_params();
 992                 }
 993
 994                 // second passed?
 995                 if (tval - tval_fpsc >= 1000000)
 996                 {
 997                         if (currentConfig.EmuOpt & 2)
 998                                 sprintf(fpsbuff, "%02i/%02i  ", frames_shown, frames_done);
 999                         frames_done = frames_shown = 0;
1000                         tval_fpsc += 1000000;
1001                 }
1002
1003                 if (tval - tval_thissec >= 1000000)
1004                 {
1005                         // missing 1 frame?
1006                         if (currentConfig.Frameskip < 0 && pframes_done < target_fps) {
1007                                 SkipFrame(); pframes_done++; frames_done++;
1008                         }
1009
1010                         tval_thissec += 1000000;
1011
1012                         if (currentConfig.Frameskip < 0) {
1013                                 pframes_done  -= target_fps; if (pframes_done  < 0) pframes_done  = 0;
1014                                 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;
1015                                 if (pframes_shown > pframes_done) pframes_shown = pframes_done;
1016                         } else {
1017                                 pframes_done = pframes_shown = 0;
1018                         }
1019                 }
1020 #ifdef PFRAMES
1021                 sprintf(fpsbuff, "%i", Pico.m.frame_count);
1022 #endif
1023
1024                 lim_time = (pframes_done+1) * target_frametime;
1025                 if (currentConfig.Frameskip >= 0) // frameskip enabled
1026                 {
1027                         for (i = 0; i < currentConfig.Frameskip; i++) {
1028                                 updateKeys();
1029                                 SkipFrame(); pframes_done++; frames_done++;
1030                                 if (!(currentConfig.EmuOpt&0x40000)) { // do framelimitting if needed
1031                                         int tval_diff;
1032                                         tval = sceKernelGetSystemTimeLow();
1033                                         tval_diff = (int)(tval - tval_thissec) << 8;
1034                                         if (tval_diff < lim_time) // we are too fast
1035                                                 simpleWait(tval + ((lim_time - tval_diff)>>8));
1036                                 }
1037                                 lim_time += target_frametime;
1038                         }
1039                 }
1040                 else // auto frameskip
1041                 {
1042                         int tval_diff;
1043                         tval = sceKernelGetSystemTimeLow();
1044                         tval_diff = (int)(tval - tval_thissec) << 8;
1045                         if (tval_diff > lim_time && (pframes_done/16 < pframes_shown))
1046                         {
1047                                 // no time left for this frame - skip
1048                                 if (tval_diff - lim_time >= (300000<<8)) {
1049                                         reset_timing = 1;
1050                                         continue;
1051                                 }
1052                                 updateKeys();
1053                                 SkipFrame(); pframes_done++; frames_done++;
1054                                 continue;
1055                         }
1056                 }
1057
1058                 updateKeys();
1059
1060                 if (!(PicoOpt&0x10))
1061                         EmuScanPrepare();
1062
1063                 PicoFrame();
1064
1065                 sceGuSync(0,0);
1066
1067                 // check time
1068                 tval = sceKernelGetSystemTimeLow();
1069                 tval_diff = (int)(tval - tval_thissec) << 8;
1070
1071                 blit2(fpsbuff, notice, tval_diff > lim_time);
1072
1073                 if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300000<<8)) { // slowdown detection
1074                         reset_timing = 1;
1075                 }
1076                 else if (!(currentConfig.EmuOpt&0x40000) || currentConfig.Frameskip < 0)
1077                 {
1078                         // sleep if we are still too fast
1079                         if (tval_diff < lim_time)
1080                         {
1081                                 // we are too fast
1082                                 simpleWait(tval + ((lim_time - tval_diff) >> 8));
1083                         }
1084                 }
1085
1086                 pframes_done++; pframes_shown++;
1087                  frames_done++;  frames_shown++;
1088         }
1089
1090
1091         emu_changeFastForward(0);
1092
1093         if (PicoAHW & PAHW_MCD) PicoCDBufferFree();
1094
1095         if (PsndOut != NULL) {
1096                 PsndOut = NULL;
1097                 sound_end();
1098         }
1099
1100         // save SRAM
1101         if ((currentConfig.EmuOpt & 1) && SRam.changed) {
1102                 emu_msg_cb("Writing SRAM/BRAM..");
1103                 emu_SaveLoadGame(0, 1);
1104                 SRam.changed = 0;
1105         }
1106
1107         // clear fps counters and stuff
1108         memset32_uncached((int *)psp_video_get_active_fb() + 512*264*2/4, 0, 512*8*2/4);
1109 }
1110
1111
1112 void emu_ResetGame(void)
1113 {
1114         PicoReset();
1115         reset_timing = 1;
1116 }
1117
1118 void emu_HandleResume(void)
1119 {
1120         if (!(PicoAHW & PAHW_MCD)) return;
1121
1122         // reopen first CD track
1123         if (Pico_mcd->TOC.Tracks[0].F != NULL)
1124         {
1125                 char *fname = romFileName;
1126                 int len = strlen(romFileName);
1127                 cue_data_t *cue_data = NULL;
1128
1129                 if (len > 4 && strcasecmp(fname + len - 4,  ".cue") == 0)
1130                 {
1131                         cue_data = cue_parse(romFileName);
1132                         if (cue_data != NULL)
1133                                 fname = cue_data->tracks[1].fname;
1134                 }
1135
1136                 lprintf("emu_HandleResume: reopen %s\n", fname);
1137                 pm_close(Pico_mcd->TOC.Tracks[0].F);
1138                 Pico_mcd->TOC.Tracks[0].F = pm_open(fname);
1139                 lprintf("reopen %s\n", Pico_mcd->TOC.Tracks[0].F != NULL ? "ok" : "failed");
1140
1141                 if (cue_data != NULL) cue_destroy(cue_data);
1142         }
1143
1144         mp3_reopen_file();
1145
1146         if (!(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1))
1147                 cdda_start_play();
1148 }
1149