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
  26 #define OSD_FPS_X 432
  27
  28 // additional pspaudio imports, credits to crazyc
  29 int sceAudio_38553111(unsigned short samples, unsigned short freq, char unknown);  // play with conversion?
  30 int sceAudio_5C37C0AE(void);                            // end play?
  31 int sceAudio_E0727056(int volume, void *buffer);        // blocking output
  32 int sceAudioOutput2GetRestSample();
  33
  34
  35 char romFileName[PATH_MAX];
  36 unsigned char *PicoDraw2FB = (unsigned char *)VRAM_CACHED_STUFF + 8; // +8 to be able to skip border with 1 quadword..
  37 int engineState = PGS_Menu;
  38
  39 static unsigned int noticeMsgTime = 0;
  40 int reset_timing = 0; // do we need this?
  41
  42
  43 static void sound_init(void);
  44 static void sound_deinit(void);
  45 static void blit2(const char *fps, const char *notice, int lagging_behind);
  46 static void clearArea(int full);
  47
  48 void emu_noticeMsgUpdated(void)
  49 {
  50         noticeMsgTime = sceKernelGetSystemTimeLow();
  51 }
  52
  53 void emu_getMainDir(char *dst, int len)
  54 {
  55         if (len > 0) *dst = 0;
  56 }
  57
  58 static void osd_text(int x, const char *text, int is_active, int clear_all)
  59 {
  60         unsigned short *screen = is_active ? psp_video_get_active_fb() : psp_screen;
  61         int len = clear_all ? (480 / 2) : (strlen(text) * 8 / 2);
  62         int *p, h;
  63         void *tmp;
  64         for (h = 0; h < 8; h++) {
  65                 p = (int *) (screen+x+512*(264+h));
  66                 p = (int *) ((int)p & ~3); // align
  67                 memset32_uncached(p, 0, len);
  68         }
  69         if (is_active) { tmp = psp_screen; psp_screen = screen; } // nasty pointer tricks
  70         emu_textOut16(x, 264, text);
  71         if (is_active) psp_screen = tmp;
  72 }
  73
  74 void emu_msg_cb(const char *msg)
  75 {
  76         osd_text(4, msg, 1, 1);
  77         noticeMsgTime = sceKernelGetSystemTimeLow() - 2000000;
  78
  79         /* assumption: emu_msg_cb gets called only when something slow is about to happen */
  80         reset_timing = 1;
  81 }
  82
  83 static void emu_msg_tray_open(void)
  84 {
  85         strcpy(noticeMsg, "CD tray opened");
  86         noticeMsgTime = sceKernelGetSystemTimeLow();
  87 }
  88
  89
  90 void emu_Init(void)
  91 {
  92         // make dirs for saves, cfgs, etc.
  93         mkdir("mds", 0777);
  94         mkdir("srm", 0777);
  95         mkdir("brm", 0777);
  96         mkdir("cfg", 0777);
  97
  98         sound_init();
  99
 100         PicoInit();
 101         PicoMessage = emu_msg_cb;
 102         PicoMCDopenTray = emu_msg_tray_open;
 103         PicoMCDcloseTray = menu_loop_tray;
 104 }
 105
 106 void emu_Deinit(void)
 107 {
 108         // save SRAM
 109         if ((currentConfig.EmuOpt & 1) && SRam.changed) {
 110                 emu_SaveLoadGame(0, 1);
 111                 SRam.changed = 0;
 112         }
 113
 114         if (!(currentConfig.EmuOpt & 0x20))
 115                 config_writelrom(PicoConfigFile);
 116
 117         PicoExit();
 118         sound_deinit();
 119 }
 120
 121 void emu_prepareDefaultConfig(void)
 122 {
 123         memset(&defaultConfig, 0, sizeof(defaultConfig));
 124         defaultConfig.EmuOpt    = 0x1d | 0x680; // | <- confirm_save, cd_leds, acc rend
 125         defaultConfig.s_PicoOpt = 0x0f | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX;
 126         defaultConfig.s_PsndRate = 22050;
 127         defaultConfig.s_PicoRegion = 0; // auto
 128         defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP
 129         defaultConfig.s_PicoCDBuffers = 64;
 130         defaultConfig.Frameskip = -1; // auto
 131         defaultConfig.CPUclock = 333;
 132         defaultConfig.KeyBinds[ 4] = 1<<0; // SACB RLDU
 133         defaultConfig.KeyBinds[ 6] = 1<<1;
 134         defaultConfig.KeyBinds[ 7] = 1<<2;
 135         defaultConfig.KeyBinds[ 5] = 1<<3;
 136         defaultConfig.KeyBinds[14] = 1<<4;
 137         defaultConfig.KeyBinds[13] = 1<<5;
 138         defaultConfig.KeyBinds[15] = 1<<6;
 139         defaultConfig.KeyBinds[ 3] = 1<<7;
 140         defaultConfig.KeyBinds[12] = 1<<26; // switch rnd
 141         defaultConfig.KeyBinds[ 8] = 1<<27; // save state
 142         defaultConfig.KeyBinds[ 9] = 1<<28; // load state
 143         defaultConfig.KeyBinds[28] = 1<<0; // num "buttons"
 144         defaultConfig.KeyBinds[30] = 1<<1;
 145         defaultConfig.KeyBinds[31] = 1<<2;
 146         defaultConfig.KeyBinds[29] = 1<<3;
 147         defaultConfig.scaling = 1;     // bilinear filtering for psp
 148         defaultConfig.scale = 1.20;    // fullscreen
 149         defaultConfig.hscale40 = 1.25;
 150         defaultConfig.hscale32 = 1.56;
 151 }
 152
 153 void emu_setDefaultConfig(void)
 154 {
 155         memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));
 156         PicoOpt = currentConfig.s_PicoOpt;
 157         PsndRate = currentConfig.s_PsndRate;
 158         PicoRegionOverride = currentConfig.s_PicoRegion;
 159         PicoAutoRgnOrder = currentConfig.s_PicoAutoRgnOrder;
 160         PicoCDBuffers = currentConfig.s_PicoCDBuffers;
 161 }
 162
 163
 164 extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
 165
 166 struct Vertex
 167 {
 168         short u,v;
 169         short x,y,z;
 170 };
 171
 172 static struct Vertex __attribute__((aligned(4))) g_vertices[2];
 173 static unsigned short __attribute__((aligned(16))) localPal[0x100];
 174 static int dynamic_palette = 0, need_pal_upload = 0, blit_16bit_mode = 0;
 175 static int fbimg_offs = 0;
 176
 177 static void set_scaling_params(void)
 178 {
 179         int src_width, fbimg_width, fbimg_height, fbimg_xoffs, fbimg_yoffs, border_hack = 0;
 180         g_vertices[0].x = g_vertices[0].y =
 181         g_vertices[0].z = g_vertices[1].z = 0;
 182
 183         fbimg_height = (int)(240.0 * currentConfig.scale + 0.5);
 184         if (Pico.video.reg[12] & 1) {
 185                 fbimg_width = (int)(320.0 * currentConfig.scale * currentConfig.hscale40 + 0.5);
 186                 src_width = 320;
 187         } else {
 188                 fbimg_width = (int)(256.0 * currentConfig.scale * currentConfig.hscale32 + 0.5);
 189                 src_width = 256;
 190         }
 191
 192         if (fbimg_width  & 1) fbimg_width++;  // make even
 193         if (fbimg_height & 1) fbimg_height++;
 194
 195         if (fbimg_width >= 480) {
 196                 g_vertices[0].u = (fbimg_width-480)/2;
 197                 g_vertices[1].u = src_width - (fbimg_width-480)/2 - 1;
 198                 fbimg_width = 480;
 199                 fbimg_xoffs = 0;
 200         } else {
 201                 g_vertices[0].u = 0;
 202                 g_vertices[1].u = src_width;
 203                 fbimg_xoffs = 240 - fbimg_width/2;
 204         }
 205         if (fbimg_width > 320 && fbimg_width <= 480) border_hack = 1;
 206
 207         if (fbimg_height >= 272) {
 208                 g_vertices[0].v = (fbimg_height-272)/2;
 209                 g_vertices[1].v = 240 - (fbimg_height-272)/2;
 210                 fbimg_height = 272;
 211                 fbimg_yoffs = 0;
 212         } else {
 213                 g_vertices[0].v = 0;
 214                 g_vertices[1].v = 240;
 215                 fbimg_yoffs = 136 - fbimg_height/2;
 216         }
 217
 218         g_vertices[1].x = fbimg_width;
 219         g_vertices[1].y = fbimg_height;
 220         if (fbimg_xoffs < 0) fbimg_xoffs = 0;
 221         if (fbimg_yoffs < 0) fbimg_yoffs = 0;
 222         if (border_hack) {
 223                 g_vertices[0].u++;
 224                 g_vertices[0].x++;
 225                 g_vertices[1].u--;
 226                 g_vertices[1].x--;
 227         }
 228         fbimg_offs = (fbimg_yoffs*512 + fbimg_xoffs) * 2; // dst is always 16bit
 229
 230         /*
 231         lprintf("set_scaling_params:\n");
 232         lprintf("offs: %i, %i\n", fbimg_xoffs, fbimg_yoffs);
 233         lprintf("xy0, xy1: %i, %i; %i, %i\n", g_vertices[0].x, g_vertices[0].y, g_vertices[1].x, g_vertices[1].y);
 234         lprintf("uv0, uv1: %i, %i; %i, %i\n", g_vertices[0].u, g_vertices[0].v, g_vertices[1].u, g_vertices[1].v);
 235         */
 236 }
 237
 238 static void do_pal_update(int allow_sh)
 239 {
 240         unsigned int *dpal=(void *)localPal;
 241         int i;
 242
 243         //for (i = 0x3f/2; i >= 0; i--)
 244         //      dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
 245         do_pal_convert(localPal, Pico.cram, currentConfig.gamma, currentConfig.gamma2);
 246
 247         if (allow_sh && (Pico.video.reg[0xC]&8)) // shadow/hilight?
 248         {
 249                 // shadowed pixels
 250                 for (i = 0x3f/2; i >= 0; i--)
 251                         dpal[0x20|i] = dpal[0x60|i] = (dpal[i]>>1)&0x7bcf7bcf;
 252                 // hilighted pixels
 253                 for (i = 0x3f; i >= 0; i--) {
 254                         int t=localPal[i]&0xf79e;t+=0x4208;
 255                         if (t&0x20) t|=0x1e;
 256                         if (t&0x800) t|=0x780;
 257                         if (t&0x10000) t|=0xf000;
 258                         t&=0xf79e;
 259                         localPal[0x80|i]=(unsigned short)t;
 260                 }
 261                 localPal[0xe0] = 0;
 262         }
 263         Pico.m.dirtyPal = 0;
 264         need_pal_upload = 1;
 265 }
 266
 267 static void do_slowmode_lines(int line_to)
 268 {
 269         int line = 0, line_len = (Pico.video.reg[12]&1) ? 320 : 256;
 270         unsigned short *dst = (unsigned short *)VRAM_STUFF + 512*240/2;
 271         unsigned char  *src = (unsigned char  *)VRAM_CACHED_STUFF + 16;
 272         if (!(Pico.video.reg[1]&8)) { line = 8; dst += 512*8; src += 512*8; }
 273
 274         for (; line < line_to; line++, dst+=512, src+=512)
 275                 amips_clut(dst, src, localPal, line_len);
 276 }
 277
 278 static void EmuScanPrepare(void)
 279 {
 280         HighCol = (unsigned char *)VRAM_CACHED_STUFF + 8;
 281         if (!(Pico.video.reg[1]&8)) HighCol += 8*512;
 282
 283         dynamic_palette = 0;
 284         if (Pico.m.dirtyPal)
 285                 do_pal_update(1);
 286 }
 287
 288 static int EmuScanSlowBegin(unsigned int num)
 289 {
 290         if (!(Pico.video.reg[1]&8)) num += 8;
 291
 292         if (!dynamic_palette)
 293                 HighCol = (unsigned char *)VRAM_CACHED_STUFF + num * 512 + 8;
 294
 295         return 0;
 296 }
 297
 298 static int EmuScanSlowEnd(unsigned int num)
 299 {
 300         if (!(Pico.video.reg[1]&8)) num += 8;
 301
 302         if (Pico.m.dirtyPal) {
 303                 if (!dynamic_palette) {
 304                         do_slowmode_lines(num);
 305                         dynamic_palette = 1;
 306                 }
 307                 do_pal_update(1);
 308         }
 309
 310         if (dynamic_palette) {
 311                 int line_len = (Pico.video.reg[12]&1) ? 320 : 256;
 312                 void *dst = (char *)VRAM_STUFF + 512*240 + 512*2*num;
 313                 amips_clut(dst, HighCol + 8, localPal, line_len);
 314         }
 315
 316         return 0;
 317 }
 318
 319 static void blitscreen_clut(void)
 320 {
 321         int offs = fbimg_offs;
 322         offs += (psp_screen == VRAM_FB0) ? VRAMOFFS_FB0 : VRAMOFFS_FB1;
 323
 324         sceGuSync(0,0); // sync with prev
 325         sceGuStart(GU_DIRECT, guCmdList);
 326         sceGuDrawBuffer(GU_PSM_5650, (void *)offs, 512); // point to back buffer
 327
 328         if (dynamic_palette)
 329         {
 330                 if (!blit_16bit_mode) {
 331                         sceGuTexMode(GU_PSM_5650, 0, 0, 0);
 332                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 512*240);
 333
 334                         blit_16bit_mode = 1;
 335                 }
 336         }
 337         else
 338         {
 339                 if (blit_16bit_mode) {
 340                         sceGuClutMode(GU_PSM_5650,0,0xff,0);
 341                         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
 342                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
 343                         blit_16bit_mode = 0;
 344                 }
 345
 346                 if ((PicoOpt&0x10) && Pico.m.dirtyPal)
 347                         do_pal_update(0);
 348
 349                 sceKernelDcacheWritebackAll();
 350
 351                 if (need_pal_upload) {
 352                         need_pal_upload = 0;
 353                         sceGuClutLoad((256/8), localPal); // upload 32*8 entries (256)
 354                 }
 355         }
 356
 357 #if 1
 358         if (g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x)
 359         {
 360                 struct Vertex* vertices;
 361                 int x;
 362
 363                 #define SLICE_WIDTH 32
 364                 for (x = 0; x < g_vertices[1].x; x += SLICE_WIDTH)
 365                 {
 366                         // render sprite
 367                         vertices = (struct Vertex*)sceGuGetMemory(2 * sizeof(struct Vertex));
 368                         memcpy(vertices, g_vertices, 2 * sizeof(struct Vertex));
 369                         vertices[0].u = vertices[0].x = x;
 370                         vertices[1].u = vertices[1].x = x + SLICE_WIDTH;
 371                         sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,vertices);
 372                 }
 373                 // lprintf("listlen: %iB\n", sceGuCheckList()); // ~480 only
 374         }
 375         else
 376 #endif
 377                 sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,g_vertices);
 378
 379         sceGuFinish();
 380 }
 381
 382
 383 static void cd_leds(void)
 384 {
 385         unsigned int reg, col_g, col_r, *p;
 386
 387         reg = Pico_mcd->s68k_regs[0];
 388
 389         p = (unsigned int *)((short *)psp_screen + 512*2+4+2);
 390         col_g = (reg & 2) ? 0x06000600 : 0;
 391         col_r = (reg & 1) ? 0x00180018 : 0;
 392         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
 393         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
 394         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
 395 }
 396
 397 #if 0
 398 static void dbg_text(void)
 399 {
 400         int *p, h, len;
 401         char text[128];
 402
 403         sprintf(text, "sl: %i, 16b: %i", g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x, blit_16bit_mode);
 404         len = strlen(text) * 8 / 2;
 405         for (h = 0; h < 8; h++) {
 406                 p = (int *) ((unsigned short *) psp_screen+2+512*(256+h));
 407                 p = (int *) ((int)p & ~3); // align
 408                 memset32_uncached(p, 0, len);
 409         }
 410         emu_textOut16(2, 256, text);
 411 }
 412 #endif
 413
 414 /* called after rendering is done, but frame emulation is not finished */
 415 void blit1(void)
 416 {
 417         if (PicoOpt&0x10)
 418         {
 419                 int i;
 420                 unsigned char *pd;
 421                 // clear top and bottom trash
 422                 for (pd = PicoDraw2FB+8, i = 8; i > 0; i--, pd += 512)
 423                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
 424                 for (pd = PicoDraw2FB+512*232+8, i = 8; i > 0; i--, pd += 512)
 425                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
 426         }
 427
 428         blitscreen_clut();
 429 }
 430
 431
 432 static void blit2(const char *fps, const char *notice, int lagging_behind)
 433 {
 434         int vsync = 0, emu_opt = currentConfig.EmuOpt;
 435
 436         if (notice || (emu_opt & 2)) {
 437                 if (notice)      osd_text(4, notice, 0, 0);
 438                 if (emu_opt & 2) osd_text(OSD_FPS_X, fps, 0, 0);
 439         }
 440
 441         //dbg_text();
 442
 443         if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))
 444                 cd_leds();
 445
 446         if (currentConfig.EmuOpt & 0x2000) { // want vsync
 447                 if (!(currentConfig.EmuOpt & 0x10000) || !lagging_behind) vsync = 1;
 448         }
 449
 450         psp_video_flip(vsync);
 451 }
 452
 453 // clears whole screen or just the notice area (in all buffers)
 454 static void clearArea(int full)
 455 {
 456         if (full) {
 457                 memset32_uncached(psp_screen, 0, 512*272*2/4);
 458                 psp_video_flip(0);
 459                 memset32_uncached(psp_screen, 0, 512*272*2/4);
 460                 memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*240/4);
 461                 memset32((int *)VRAM_CACHED_STUFF+512*240/4, 0, 512*240*2/4);
 462         } else {
 463                 void *fb = psp_video_get_active_fb();
 464                 memset32_uncached((int *)((char *)psp_screen + 512*264*2), 0, 512*8*2/4);
 465                 memset32_uncached((int *)((char *)fb         + 512*264*2), 0, 512*8*2/4);
 466         }
 467 }
 468
 469 static void vidResetMode(void)
 470 {
 471         // setup GU
 472         sceGuSync(0,0); // sync with prev
 473         sceGuStart(GU_DIRECT, guCmdList);
 474
 475         sceGuClutMode(GU_PSM_5650,0,0xff,0);
 476         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
 477         sceGuTexFunc(GU_TFX_REPLACE,GU_TCC_RGB);
 478         if (currentConfig.scaling)
 479              sceGuTexFilter(GU_LINEAR, GU_LINEAR);
 480         else sceGuTexFilter(GU_NEAREST, GU_NEAREST);
 481         sceGuTexScale(1.0f,1.0f);
 482         sceGuTexOffset(0.0f,0.0f);
 483
 484         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
 485
 486         // slow rend.
 487         PicoDrawSetColorFormat(-1);
 488         PicoScanBegin = EmuScanSlowBegin;
 489         PicoScanEnd = EmuScanSlowEnd;
 490
 491         localPal[0xe0] = 0;
 492         Pico.m.dirtyPal = 1;
 493         blit_16bit_mode = dynamic_palette = 0;
 494
 495         sceGuFinish();
 496         set_scaling_params();
 497         sceGuSync(0,0);
 498 }
 499
 500
 501 /* sound stuff */
 502 #define SOUND_BLOCK_SIZE_NTSC (1470*2) // 1024 // 1152
 503 #define SOUND_BLOCK_SIZE_PAL  (1764*2)
 504 #define SOUND_BLOCK_COUNT    8
 505
 506 static short __attribute__((aligned(4))) sndBuffer[SOUND_BLOCK_SIZE_PAL*SOUND_BLOCK_COUNT + 44100/50*2];
 507 static short *snd_playptr = NULL, *sndBuffer_endptr = NULL;
 508 static int samples_made = 0, samples_done = 0, samples_block = 0;
 509 static int sound_thread_exit = 0;
 510 static SceUID sound_sem = -1;
 511
 512 static void writeSound(int len);
 513
 514 static int sound_thread(SceSize args, void *argp)
 515 {
 516         int ret = 0;
 517
 518         lprintf("sthr: started, priority %i\n", sceKernelGetThreadCurrentPriority());
 519
 520         while (!sound_thread_exit)
 521         {
 522                 if (samples_made - samples_done < samples_block) {
 523                         // wait for data (use at least 2 blocks)
 524                         //lprintf("sthr: wait... (%i)\n", samples_made - samples_done);
 525                         while (samples_made - samples_done <= samples_block*2 && !sound_thread_exit)
 526                                 ret = sceKernelWaitSema(sound_sem, 1, 0);
 527                         if (ret < 0) lprintf("sthr: sceKernelWaitSema: %i\n", ret);
 528                         continue;
 529                 }
 530
 531                 // lprintf("sthr: got data: %i\n", samples_made - samples_done);
 532
 533                 ret = sceAudio_E0727056(PSP_AUDIO_VOLUME_MAX, snd_playptr);
 534
 535                 samples_done += samples_block;
 536                 snd_playptr  += samples_block;
 537                 if (snd_playptr >= sndBuffer_endptr)
 538                         snd_playptr = sndBuffer;
 539                 // 1.5 kernel returns 0, newer ones return # of samples queued
 540                 if (ret < 0)
 541                         lprintf("sthr: sceAudio_E0727056: %08x; pos %i/%i\n", ret, samples_done, samples_made);
 542
 543                 // shouln't happen, but just in case
 544                 if (samples_made - samples_done >= samples_block*3) {
 545                         //lprintf("sthr: block skip (%i)\n", samples_made - samples_done);
 546                         samples_done += samples_block; // skip
 547                         snd_playptr  += samples_block;
 548                 }
 549
 550         }
 551
 552         lprintf("sthr: exit\n");
 553         sceKernelExitDeleteThread(0);
 554         return 0;
 555 }
 556
 557 static void sound_init(void)
 558 {
 559         SceUID thid;
 560         int ret;
 561
 562         sound_sem = sceKernelCreateSema("sndsem", 0, 0, 1, NULL);
 563         if (sound_sem < 0) lprintf("sceKernelCreateSema() failed: %i\n", sound_sem);
 564
 565         samples_made = samples_done = 0;
 566         samples_block = SOUND_BLOCK_SIZE_NTSC; // make sure it goes to sema
 567         sound_thread_exit = 0;
 568         thid = sceKernelCreateThread("sndthread", sound_thread, 0x12, 0x10000, 0, NULL);
 569         if (thid >= 0)
 570         {
 571                 ret = sceKernelStartThread(thid, 0, 0);
 572                 if (ret < 0) lprintf("sound_init: sceKernelStartThread returned %08x\n", ret);
 573         }
 574         else
 575                 lprintf("sceKernelCreateThread failed: %i\n", thid);
 576 }
 577
 578 static void sound_prepare(void)
 579 {
 580         static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
 581         int ret, stereo;
 582
 583         samples_made = samples_done = 0;
 584
 585         if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
 586                 PsndRerate(Pico.m.frame_count ? 1 : 0);
 587         }
 588         stereo=(PicoOpt&8)>>3;
 589
 590         samples_block = Pico.m.pal ? SOUND_BLOCK_SIZE_PAL : SOUND_BLOCK_SIZE_NTSC;
 591         if (PsndRate <= 22050) samples_block /= 2;
 592         sndBuffer_endptr = &sndBuffer[samples_block*SOUND_BLOCK_COUNT];
 593
 594         lprintf("starting audio: %i, len: %i, stereo: %i, pal: %i, block samples: %i\n",
 595                         PsndRate, PsndLen, stereo, Pico.m.pal, samples_block);
 596
 597         // while (sceAudioOutput2GetRestSample() > 0) psp_msleep(100);
 598         // sceAudio_5C37C0AE();
 599         ret = sceAudio_38553111(samples_block/2, PsndRate, 2); // seems to not need that stupid 64byte alignment
 600         if (ret < 0) {
 601                 lprintf("sceAudio_38553111() failed: %i\n", ret);
 602                 sprintf(noticeMsg, "sound init failed (%i), snd disabled", ret);
 603                 noticeMsgTime = sceKernelGetSystemTimeLow();
 604                 currentConfig.EmuOpt &= ~4;
 605         } else {
 606                 PicoWriteSound = writeSound;
 607                 memset32((int *)(void *)sndBuffer, 0, sizeof(sndBuffer)/4);
 608                 snd_playptr = sndBuffer_endptr - samples_block;
 609                 samples_made = samples_block; // send 1 empty block first..
 610                 PsndOut = sndBuffer;
 611                 PsndRate_old = PsndRate;
 612                 PicoOpt_old  = PicoOpt;
 613                 pal_old = Pico.m.pal;
 614         }
 615 }
 616
 617 static void sound_end(void)
 618 {
 619         int i;
 620         if (samples_done == 0)
 621         {
 622                 // if no data is written between sceAudio_38553111 and sceAudio_5C37C0AE calls,
 623                 // we get a deadlock on next sceAudio_38553111 call
 624                 // so this is yet another workaround:
 625                 memset32((int *)(void *)sndBuffer, 0, samples_block*4/4);
 626                 samples_made = samples_block * 3;
 627                 sceKernelSignalSema(sound_sem, 1);
 628         }
 629         sceKernelDelayThread(100*1000);
 630         samples_made = samples_done = 0;
 631         for (i = 0; sceAudioOutput2GetRestSample() > 0 && i < 16; i++)
 632                 psp_msleep(100);
 633         sceAudio_5C37C0AE();
 634 }
 635
 636 static void sound_deinit(void)
 637 {
 638         sound_thread_exit = 1;
 639         sceKernelSignalSema(sound_sem, 1);
 640         sceKernelDeleteSema(sound_sem);
 641         sound_sem = -1;
 642 }
 643
 644 static void writeSound(int len)
 645 {
 646         int ret;
 647         if (PicoOpt&8) len<<=1;
 648
 649         PsndOut += len;
 650         /*if (PsndOut > sndBuffer_endptr) {
 651                 memcpy32((int *)(void *)sndBuffer, (int *)endptr, (PsndOut - endptr + 1) / 2);
 652                 PsndOut = &sndBuffer[PsndOut - endptr];
 653                 lprintf("mov\n");
 654         }
 655         else*/
 656         if (PsndOut > sndBuffer_endptr) lprintf("snd oflow %i!\n", PsndOut - sndBuffer_endptr);
 657         if (PsndOut >= sndBuffer_endptr)
 658                 PsndOut = sndBuffer;
 659
 660         // signal the snd thread
 661         samples_made += len;
 662         if (samples_made - samples_done > samples_block*2) {
 663                 // lprintf("signal, %i/%i\n", samples_done, samples_made);
 664                 ret = sceKernelSignalSema(sound_sem, 1);
 665                 //if (ret < 0) lprintf("snd signal ret %08x\n", ret);
 666         }
 667 }
 668
 669
 670 static void SkipFrame(void)
 671 {
 672         PicoSkipFrame=1;
 673         PicoFrame();
 674         PicoSkipFrame=0;
 675 }
 676
 677 void emu_forcedFrame(void)
 678 {
 679         int po_old = PicoOpt;
 680         int eo_old = currentConfig.EmuOpt;
 681
 682         PicoOpt &= ~0x0010;
 683         PicoOpt |=  0x4080; // soft_scale | acc_sprites
 684         currentConfig.EmuOpt |= 0x80;
 685
 686         vidResetMode();
 687         memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*8/4); // borders
 688         memset32((int *)VRAM_CACHED_STUFF + 512*232/4, 0xe0e0e0e0, 512*8/4);
 689         memset32_uncached((int *)psp_screen + 512*264*2/4, 0, 512*8*2/4);
 690
 691         PicoDrawSetColorFormat(-1);
 692         PicoScanBegin = EmuScanSlowBegin;
 693         PicoScanEnd = EmuScanSlowEnd;
 694         EmuScanPrepare();
 695         PicoFrameDrawOnly();
 696         blit1();
 697         sceGuSync(0,0);
 698
 699         PicoOpt = po_old;
 700         currentConfig.EmuOpt = eo_old;
 701 }
 702
 703
 704 static void RunEvents(unsigned int which)
 705 {
 706         if (which & 0x1800) // save or load (but not both)
 707         {
 708                 int do_it = 1;
 709
 710                 if ( emu_checkSaveFile(state_slot) &&
 711                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load
 712                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) // save
 713                 {
 714                         int keys;
 715                         sceGuSync(0,0);
 716                         blit2("", (which & 0x1000) ? "LOAD STATE? (X=yes, O=no)" : "OVERWRITE SAVE? (X=yes, O=no)", 0);
 717                         while( !((keys = psp_pad_read(1)) & (BTN_X|BTN_CIRCLE)) )
 718                                 psp_msleep(50);
 719                         if (keys & BTN_CIRCLE) do_it = 0;
 720                         while(  ((keys = psp_pad_read(1)) & (BTN_X|BTN_CIRCLE)) ) // wait for release
 721                                 psp_msleep(50);
 722                         clearArea(0);
 723                 }
 724
 725                 if (do_it)
 726                 {
 727                         osd_text(4, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME", 1, 0);
 728                         PicoStateProgressCB = emu_msg_cb;
 729                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);
 730                         PicoStateProgressCB = NULL;
 731                         psp_msleep(0);
 732                 }
 733
 734                 reset_timing = 1;
 735         }
 736         if (which & 0x0400) // switch renderer
 737         {
 738                 if (PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |=  0x80; }
 739                 else              { PicoOpt|= 0x10; currentConfig.EmuOpt &= ~0x80; }
 740
 741                 vidResetMode();
 742
 743                 if (PicoOpt&0x10)
 744                         strcpy(noticeMsg, "fast renderer");
 745                 else if (currentConfig.EmuOpt&0x80)
 746                         strcpy(noticeMsg, "accurate renderer");
 747
 748                 noticeMsgTime = sceKernelGetSystemTimeLow();
 749         }
 750         if (which & 0x0300)
 751         {
 752                 if(which&0x0200) {
 753                         state_slot -= 1;
 754                         if(state_slot < 0) state_slot = 9;
 755                 } else {
 756                         state_slot += 1;
 757                         if(state_slot > 9) state_slot = 0;
 758                 }
 759                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");
 760                 noticeMsgTime = sceKernelGetSystemTimeLow();
 761         }
 762 }
 763
 764 static void updateKeys(void)
 765 {
 766         unsigned int keys, allActions[2] = { 0, 0 }, events;
 767         static unsigned int prevEvents = 0;
 768         int i;
 769
 770         keys = psp_pad_read(0);
 771         if (keys & PSP_CTRL_HOME)
 772                 sceDisplayWaitVblankStart();
 773
 774         if (keys & BTN_SELECT)
 775                 engineState = PGS_Menu;
 776
 777         keys &= CONFIGURABLE_KEYS;
 778
 779         for (i = 0; i < 32; i++)
 780         {
 781                 if (keys & (1 << i))
 782                 {
 783                         int pl, acts = currentConfig.KeyBinds[i];
 784                         if (!acts) continue;
 785                         pl = (acts >> 16) & 1;
 786                         if (kb_combo_keys & (1 << i))
 787                         {
 788                                 int u = i+1, acts_c = acts & kb_combo_acts;
 789                                 // let's try to find the other one
 790                                 if (acts_c) {
 791                                         for (; u < 32; u++)
 792                                                 if ( (keys & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {
 793                                                         allActions[pl] |= acts_c & currentConfig.KeyBinds[u];
 794                                                         keys &= ~((1 << i) | (1 << u));
 795                                                         break;
 796                                                 }
 797                                 }
 798                                 // add non-combo actions if combo ones were not found
 799                                 if (!acts_c || u == 32)
 800                                         allActions[pl] |= acts & ~kb_combo_acts;
 801                         } else {
 802                                 allActions[pl] |= acts;
 803                         }
 804                 }
 805         }
 806
 807         PicoPad[0] = (unsigned short) allActions[0];
 808         PicoPad[1] = (unsigned short) allActions[1];
 809
 810         events = (allActions[0] | allActions[1]) >> 16;
 811
 812         events &= ~prevEvents;
 813         if (events) RunEvents(events);
 814         if (movie_data) emu_updateMovie();
 815
 816         prevEvents = (allActions[0] | allActions[1]) >> 16;
 817 }
 818
 819
 820 static void simpleWait(unsigned int until)
 821 {
 822         unsigned int tval;
 823         int diff;
 824
 825         tval = sceKernelGetSystemTimeLow();
 826         diff = (int)until - (int)tval;
 827         if (diff >= 512 && diff < 100*1024)
 828                 sceKernelDelayThread(diff);
 829 }
 830
 831 void emu_Loop(void)
 832 {
 833         static int mp3_init_done = 0;
 834         char fpsbuff[24]; // fps count c string
 835         unsigned int tval, tval_thissec = 0; // timing
 836         int target_fps, target_frametime, lim_time, tval_diff, i, oldmodes = 0;
 837         int pframes_done, pframes_shown; // "period" frames, used for sync
 838         int  frames_done,  frames_shown, tval_fpsc = 0; // actual frames
 839         char *notice = NULL;
 840
 841         lprintf("entered emu_Loop()\n");
 842
 843         fpsbuff[0] = 0;
 844
 845         if (currentConfig.CPUclock != psp_get_cpu_clock()) {
 846                 lprintf("setting cpu clock to %iMHz... ", currentConfig.CPUclock);
 847                 i = psp_set_cpu_clock(currentConfig.CPUclock);
 848                 lprintf(i ? "failed\n" : "done\n");
 849                 currentConfig.CPUclock = psp_get_cpu_clock();
 850         }
 851
 852         // make sure we are in correct mode
 853         vidResetMode();
 854         clearArea(1);
 855         Pico.m.dirtyPal = 1;
 856         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
 857         emu_findKeyBindCombos();
 858
 859         // pal/ntsc might have changed, reset related stuff
 860         target_fps = Pico.m.pal ? 50 : 60;
 861         target_frametime = Pico.m.pal ? (1000000<<8)/50 : (1000000<<8)/60+1;
 862         reset_timing = 1;
 863
 864         if (PicoAHW & PAHW_MCD) {
 865                 // prepare CD buffer
 866                 PicoCDBufferInit();
 867                 // mp3...
 868                 if (!mp3_init_done) {
 869                         i = mp3_init();
 870                         mp3_init_done = 1;
 871                         if (i) { engineState = PGS_Menu; return; }
 872                 }
 873         }
 874
 875         // prepare sound stuff
 876         PsndOut = NULL;
 877         if (currentConfig.EmuOpt & 4)
 878         {
 879                 sound_prepare();
 880         }
 881
 882         sceDisplayWaitVblankStart();
 883         pframes_shown = pframes_done =
 884          frames_shown =  frames_done = 0;
 885
 886         tval_fpsc = sceKernelGetSystemTimeLow();
 887
 888         // loop?
 889         while (engineState == PGS_Running)
 890         {
 891                 int modes;
 892
 893                 tval = sceKernelGetSystemTimeLow();
 894                 if (reset_timing || tval < tval_fpsc) {
 895                         //stdbg("timing reset");
 896                         reset_timing = 0;
 897                         tval_thissec = tval;
 898                         pframes_shown = pframes_done = 0;
 899                 }
 900
 901                 // show notice message?
 902                 if (noticeMsgTime) {
 903                         static int noticeMsgSum;
 904                         if (tval - noticeMsgTime > 2000000) { // > 2.0 sec
 905                                 noticeMsgTime = 0;
 906                                 clearArea(0);
 907                                 notice = 0;
 908                         } else {
 909                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
 910                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
 911                                 notice = noticeMsg;
 912                         }
 913                 }
 914
 915                 // check for mode changes
 916                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
 917                 if (modes != oldmodes) {
 918                         oldmodes = modes;
 919                         clearArea(1);
 920                         set_scaling_params();
 921                 }
 922
 923                 // second passed?
 924                 if (tval - tval_fpsc >= 1000000)
 925                 {
 926                         if (currentConfig.EmuOpt & 2)
 927                                 sprintf(fpsbuff, "%02i/%02i  ", frames_shown, frames_done);
 928                         frames_done = frames_shown = 0;
 929                         tval_fpsc += 1000000;
 930                 }
 931
 932                 if (tval - tval_thissec >= 1000000)
 933                 {
 934                         // missing 1 frame?
 935                         if (currentConfig.Frameskip < 0 && pframes_done < target_fps) {
 936                                 SkipFrame(); pframes_done++; frames_done++;
 937                         }
 938
 939                         tval_thissec += 1000000;
 940
 941                         if (currentConfig.Frameskip < 0) {
 942                                 pframes_done  -= target_fps; if (pframes_done  < 0) pframes_done  = 0;
 943                                 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;
 944                                 if (pframes_shown > pframes_done) pframes_shown = pframes_done;
 945                         } else {
 946                                 pframes_done = pframes_shown = 0;
 947                         }
 948                 }
 949 #ifdef PFRAMES
 950                 sprintf(fpsbuff, "%i", Pico.m.frame_count);
 951 #endif
 952
 953                 lim_time = (pframes_done+1) * target_frametime;
 954                 if (currentConfig.Frameskip >= 0) // frameskip enabled
 955                 {
 956                         for (i = 0; i < currentConfig.Frameskip; i++) {
 957                                 updateKeys();
 958                                 SkipFrame(); pframes_done++; frames_done++;
 959                                 if (!(currentConfig.EmuOpt&0x40000)) { // do framelimitting if needed
 960                                         int tval_diff;
 961                                         tval = sceKernelGetSystemTimeLow();
 962                                         tval_diff = (int)(tval - tval_thissec) << 8;
 963                                         if (tval_diff < lim_time) // we are too fast
 964                                                 simpleWait(tval + ((lim_time - tval_diff)>>8));
 965                                 }
 966                                 lim_time += target_frametime;
 967                         }
 968                 }
 969                 else // auto frameskip
 970                 {
 971                         int tval_diff;
 972                         tval = sceKernelGetSystemTimeLow();
 973                         tval_diff = (int)(tval - tval_thissec) << 8;
 974                         if (tval_diff > lim_time && (pframes_done/16 < pframes_shown))
 975                         {
 976                                 // no time left for this frame - skip
 977                                 if (tval_diff - lim_time >= (300000<<8)) {
 978                                         reset_timing = 1;
 979                                         continue;
 980                                 }
 981                                 updateKeys();
 982                                 SkipFrame(); pframes_done++; frames_done++;
 983                                 continue;
 984                         }
 985                 }
 986
 987                 updateKeys();
 988
 989                 if (!(PicoOpt&0x10))
 990                         EmuScanPrepare();
 991
 992                 PicoFrame();
 993
 994                 sceGuSync(0,0);
 995
 996                 // check time
 997                 tval = sceKernelGetSystemTimeLow();
 998                 tval_diff = (int)(tval - tval_thissec) << 8;
 999
1000                 blit2(fpsbuff, notice, tval_diff > lim_time);
1001
1002                 if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300000<<8)) { // slowdown detection
1003                         reset_timing = 1;
1004                 }
1005                 else if (!(currentConfig.EmuOpt&0x40000) || currentConfig.Frameskip < 0)
1006                 {
1007                         // sleep if we are still too fast
1008                         if (tval_diff < lim_time)
1009                         {
1010                                 // we are too fast
1011                                 simpleWait(tval + ((lim_time - tval_diff) >> 8));
1012                         }
1013                 }
1014
1015                 pframes_done++; pframes_shown++;
1016                  frames_done++;  frames_shown++;
1017         }
1018
1019
1020         if (PicoAHW & PAHW_MCD) PicoCDBufferFree();
1021
1022         if (PsndOut != NULL) {
1023                 PsndOut = NULL;
1024                 sound_end();
1025         }
1026
1027         // save SRAM
1028         if ((currentConfig.EmuOpt & 1) && SRam.changed) {
1029                 emu_msg_cb("Writing SRAM/BRAM..");
1030                 emu_SaveLoadGame(0, 1);
1031                 SRam.changed = 0;
1032         }
1033
1034         // clear fps counters and stuff
1035         memset32_uncached((int *)psp_video_get_active_fb() + 512*264*2/4, 0, 512*8*2/4);
1036 }
1037
1038
1039 void emu_ResetGame(void)
1040 {
1041         PicoReset();
1042         reset_timing = 1;
1043 }
1044
1045 void emu_HandleResume(void)
1046 {
1047         if (!(PicoAHW & PAHW_MCD)) return;
1048
1049         // reopen files..
1050         if (Pico_mcd->TOC.Tracks[0].F != NULL)
1051         {
1052                 lprintf("emu_HandleResume: reopen %s\n", romFileName);
1053                 pm_close(Pico_mcd->TOC.Tracks[0].F);
1054                 Pico_mcd->TOC.Tracks[0].F = pm_open(romFileName);
1055                 lprintf("reopen %s\n", Pico_mcd->TOC.Tracks[0].F != NULL ? "ok" : "failed");
1056         }
1057
1058         mp3_reopen_file();
1059 }
1060