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/lprintf.h"
  23 #include "../../Pico/PicoInt.h"
  24
  25 #define OSD_FPS_X 432
  26
  27 // additional pspaudio imports, credits to crazyc
  28 int sceAudio_38553111(unsigned short samples, unsigned short freq, char unknown);  // play with conversion?
  29 int sceAudio_5C37C0AE(void);                            // end play?
  30 int sceAudio_E0727056(int volume, void *buffer);        // blocking output
  31 int sceAudioOutput2GetRestSample();
  32
  33
  34 char romFileName[PATH_MAX];
  35 unsigned char *PicoDraw2FB = (unsigned char *)VRAM_CACHED_STUFF + 8; // +8 to be able to skip border with 1 quadword..
  36 int engineState;
  37
  38 static int combo_keys = 0, combo_acts = 0; // keys and actions which need button combos
  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                 FILE *f = fopen(PicoConfigFile, "r+b");
 116                 if (!f) emu_WriteConfig(0);
 117                 else {
 118                         // if we already have config, reload it, except last ROM
 119                         fseek(f, sizeof(currentConfig.lastRomFile), SEEK_SET);
 120                         fread(&currentConfig.EmuOpt, 1, sizeof(currentConfig) - sizeof(currentConfig.lastRomFile), f);
 121                         fseek(f, 0, SEEK_SET);
 122                         fwrite(&currentConfig, 1, sizeof(currentConfig), f);
 123                         fflush(f);
 124                         fclose(f);
 125                 }
 126         }
 127
 128         PicoExit();
 129         sound_deinit();
 130 }
 131
 132 void emu_setDefaultConfig(void)
 133 {
 134         memset(&currentConfig, 0, sizeof(currentConfig));
 135         currentConfig.lastRomFile[0] = 0;
 136         currentConfig.EmuOpt  = 0x1d | 0x680;  // | confirm_save, cd_leds, acc rend
 137         currentConfig.PicoOpt = 0x0f | 0x1c00; // | gfx_cd, cd_pcm, cd_cdda
 138         currentConfig.PsndRate = 22050;
 139         currentConfig.PicoRegion = 0; // auto
 140         currentConfig.PicoAutoRgnOrder = 0x184; // US, EU, JP
 141         currentConfig.Frameskip = -1; // auto
 142         currentConfig.volume = 50;
 143         currentConfig.CPUclock = 333;
 144         currentConfig.KeyBinds[ 4] = 1<<0; // SACB RLDU
 145         currentConfig.KeyBinds[ 6] = 1<<1;
 146         currentConfig.KeyBinds[ 7] = 1<<2;
 147         currentConfig.KeyBinds[ 5] = 1<<3;
 148         currentConfig.KeyBinds[14] = 1<<4;
 149         currentConfig.KeyBinds[13] = 1<<5;
 150         currentConfig.KeyBinds[15] = 1<<6;
 151         currentConfig.KeyBinds[ 3] = 1<<7;
 152         currentConfig.KeyBinds[12] = 1<<26; // switch rnd
 153         currentConfig.KeyBinds[ 8] = 1<<27; // save state
 154         currentConfig.KeyBinds[ 9] = 1<<28; // load state
 155         currentConfig.KeyBinds[28] = 1<<0; // num "buttons"
 156         currentConfig.KeyBinds[30] = 1<<1;
 157         currentConfig.KeyBinds[31] = 1<<2;
 158         currentConfig.KeyBinds[29] = 1<<3;
 159         currentConfig.PicoCDBuffers = 64;
 160         currentConfig.scaling = 1;     // bilinear filtering for psp
 161         currentConfig.scale = 1.20;    // fullscreen
 162         currentConfig.hscale40 = 1.25;
 163         currentConfig.hscale32 = 1.56;
 164 }
 165
 166
 167 extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
 168
 169 struct Vertex
 170 {
 171         short u,v;
 172         short x,y,z;
 173 };
 174
 175 static struct Vertex __attribute__((aligned(4))) g_vertices[2];
 176 static unsigned short __attribute__((aligned(16))) localPal[0x100];
 177 static int dynamic_palette = 0, need_pal_upload = 0, blit_16bit_mode = 0;
 178 static int fbimg_offs = 0;
 179
 180 static void set_scaling_params(void)
 181 {
 182         int src_width, fbimg_width, fbimg_height, fbimg_xoffs, fbimg_yoffs, border_hack = 0;
 183         g_vertices[0].x = g_vertices[0].y =
 184         g_vertices[0].z = g_vertices[1].z = 0;
 185
 186         fbimg_height = (int)(240.0 * currentConfig.scale + 0.5);
 187         if (Pico.video.reg[12] & 1) {
 188                 fbimg_width = (int)(320.0 * currentConfig.scale * currentConfig.hscale40 + 0.5);
 189                 src_width = 320;
 190         } else {
 191                 fbimg_width = (int)(256.0 * currentConfig.scale * currentConfig.hscale32 + 0.5);
 192                 src_width = 256;
 193         }
 194
 195         if (fbimg_width  & 1) fbimg_width++;  // make even
 196         if (fbimg_height & 1) fbimg_height++;
 197
 198         if (fbimg_width >= 480) {
 199                 g_vertices[0].u = (fbimg_width-480)/2;
 200                 g_vertices[1].u = src_width - (fbimg_width-480)/2 - 1;
 201                 fbimg_width = 480;
 202                 fbimg_xoffs = 0;
 203         } else {
 204                 g_vertices[0].u = 0;
 205                 g_vertices[1].u = src_width;
 206                 fbimg_xoffs = 240 - fbimg_width/2;
 207         }
 208         if (fbimg_width > 320 && fbimg_width <= 480) border_hack = 1;
 209
 210         if (fbimg_height >= 272) {
 211                 g_vertices[0].v = (fbimg_height-272)/2;
 212                 g_vertices[1].v = 240 - (fbimg_height-272)/2;
 213                 fbimg_height = 272;
 214                 fbimg_yoffs = 0;
 215         } else {
 216                 g_vertices[0].v = 0;
 217                 g_vertices[1].v = 240;
 218                 fbimg_yoffs = 136 - fbimg_height/2;
 219         }
 220
 221         g_vertices[1].x = fbimg_width;
 222         g_vertices[1].y = fbimg_height;
 223         if (fbimg_xoffs < 0) fbimg_xoffs = 0;
 224         if (fbimg_yoffs < 0) fbimg_yoffs = 0;
 225         if (border_hack) {
 226                 g_vertices[0].u++;
 227                 g_vertices[0].x++;
 228                 g_vertices[1].u--;
 229                 g_vertices[1].x--;
 230         }
 231         fbimg_offs = (fbimg_yoffs*512 + fbimg_xoffs) * 2; // dst is always 16bit
 232
 233         /*
 234         lprintf("set_scaling_params:\n");
 235         lprintf("offs: %i, %i\n", fbimg_xoffs, fbimg_yoffs);
 236         lprintf("xy0, xy1: %i, %i; %i, %i\n", g_vertices[0].x, g_vertices[0].y, g_vertices[1].x, g_vertices[1].y);
 237         lprintf("uv0, uv1: %i, %i; %i, %i\n", g_vertices[0].u, g_vertices[0].v, g_vertices[1].u, g_vertices[1].v);
 238         */
 239 }
 240
 241 static void do_pal_update(int allow_sh)
 242 {
 243         unsigned int *dpal=(void *)localPal;
 244         int i;
 245
 246         //for (i = 0x3f/2; i >= 0; i--)
 247         //      dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
 248         do_pal_convert(localPal, Pico.cram, currentConfig.gamma);
 249
 250         if (allow_sh && (Pico.video.reg[0xC]&8)) // shadow/hilight?
 251         {
 252                 // shadowed pixels
 253                 for (i = 0x3f/2; i >= 0; i--)
 254                         dpal[0x20|i] = dpal[0x60|i] = (dpal[i]>>1)&0x7bcf7bcf;
 255                 // hilighted pixels
 256                 for (i = 0x3f; i >= 0; i--) {
 257                         int t=localPal[i]&0xf79e;t+=0x4208;
 258                         if (t&0x20) t|=0x1e;
 259                         if (t&0x800) t|=0x780;
 260                         if (t&0x10000) t|=0xf000;
 261                         t&=0xf79e;
 262                         localPal[0x80|i]=(unsigned short)t;
 263                 }
 264                 localPal[0xe0] = 0;
 265         }
 266         Pico.m.dirtyPal = 0;
 267         need_pal_upload = 1;
 268 }
 269
 270 static void do_slowmode_lines(int line_to)
 271 {
 272         int line = 0, line_len = (Pico.video.reg[12]&1) ? 320 : 256;
 273         unsigned short *dst = (unsigned short *)VRAM_STUFF + 512*240/2;
 274         unsigned char  *src = (unsigned char  *)VRAM_CACHED_STUFF + 16;
 275         if (!(Pico.video.reg[1]&8)) { line = 8; dst += 512*8; src += 512*8; }
 276
 277         for (; line < line_to; line++, dst+=512, src+=512)
 278                 amips_clut(dst, src, localPal, line_len);
 279 }
 280
 281 static void EmuScanPrepare(void)
 282 {
 283         HighCol = (unsigned char *)VRAM_CACHED_STUFF + 8;
 284         if (!(Pico.video.reg[1]&8)) HighCol += 8*512;
 285
 286         dynamic_palette = 0;
 287         if (Pico.m.dirtyPal)
 288                 do_pal_update(1);
 289 }
 290
 291 static int EmuScanSlow(unsigned int num, void *sdata)
 292 {
 293         if (!(Pico.video.reg[1]&8)) num += 8;
 294
 295         if (Pico.m.dirtyPal) {
 296                 if (!dynamic_palette) {
 297                         do_slowmode_lines(num);
 298                         dynamic_palette = 1;
 299                 }
 300                 do_pal_update(1);
 301         }
 302
 303         if (dynamic_palette) {
 304                 int line_len = (Pico.video.reg[12]&1) ? 320 : 256;
 305                 void *dst = (char *)VRAM_STUFF + 512*240 + 512*2*num;
 306                 amips_clut(dst, HighCol + 8, localPal, line_len);
 307         } else
 308                 HighCol = (unsigned char *)VRAM_CACHED_STUFF + (num+1)*512 + 8;
 309
 310         return 0;
 311 }
 312
 313 static void blitscreen_clut(void)
 314 {
 315         int offs = fbimg_offs;
 316         offs += (psp_screen == VRAM_FB0) ? VRAMOFFS_FB0 : VRAMOFFS_FB1;
 317
 318         sceGuSync(0,0); // sync with prev
 319         sceGuStart(GU_DIRECT, guCmdList);
 320         sceGuDrawBuffer(GU_PSM_5650, (void *)offs, 512); // point to back buffer
 321
 322         if (dynamic_palette)
 323         {
 324                 if (!blit_16bit_mode) {
 325                         sceGuTexMode(GU_PSM_5650, 0, 0, 0);
 326                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 512*240);
 327
 328                         blit_16bit_mode = 1;
 329                 }
 330         }
 331         else
 332         {
 333                 if (blit_16bit_mode) {
 334                         sceGuClutMode(GU_PSM_5650,0,0xff,0);
 335                         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
 336                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
 337                         blit_16bit_mode = 0;
 338                 }
 339
 340                 if ((PicoOpt&0x10) && Pico.m.dirtyPal)
 341                         do_pal_update(0);
 342
 343                 sceKernelDcacheWritebackAll();
 344
 345                 if (need_pal_upload) {
 346                         need_pal_upload = 0;
 347                         sceGuClutLoad((256/8), localPal); // upload 32*8 entries (256)
 348                 }
 349         }
 350
 351 #if 1
 352         if (g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x)
 353         {
 354                 struct Vertex* vertices;
 355                 int x;
 356
 357                 #define SLICE_WIDTH 32
 358                 for (x = 0; x < g_vertices[1].x; x += SLICE_WIDTH)
 359                 {
 360                         // render sprite
 361                         vertices = (struct Vertex*)sceGuGetMemory(2 * sizeof(struct Vertex));
 362                         memcpy(vertices, g_vertices, 2 * sizeof(struct Vertex));
 363                         vertices[0].u = vertices[0].x = x;
 364                         vertices[1].u = vertices[1].x = x + SLICE_WIDTH;
 365                         sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,vertices);
 366                 }
 367                 // lprintf("listlen: %iB\n", sceGuCheckList()); // ~480 only
 368         }
 369         else
 370 #endif
 371                 sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,g_vertices);
 372
 373         sceGuFinish();
 374 }
 375
 376
 377 static void cd_leds(void)
 378 {
 379         unsigned int reg, col_g, col_r, *p;
 380
 381         reg = Pico_mcd->s68k_regs[0];
 382
 383         p = (unsigned int *)((short *)psp_screen + 512*2+4+2);
 384         col_g = (reg & 2) ? 0x06000600 : 0;
 385         col_r = (reg & 1) ? 0x00180018 : 0;
 386         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
 387         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
 388         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
 389 }
 390
 391 #if 0
 392 static void dbg_text(void)
 393 {
 394         int *p, h, len;
 395         char text[128];
 396
 397         sprintf(text, "sl: %i, 16b: %i", g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x, blit_16bit_mode);
 398         len = strlen(text) * 8 / 2;
 399         for (h = 0; h < 8; h++) {
 400                 p = (int *) ((unsigned short *) psp_screen+2+512*(256+h));
 401                 p = (int *) ((int)p & ~3); // align
 402                 memset32_uncached(p, 0, len);
 403         }
 404         emu_textOut16(2, 256, text);
 405 }
 406 #endif
 407
 408 /* called after rendering is done, but frame emulation is not finished */
 409 void blit1(void)
 410 {
 411         if (PicoOpt&0x10)
 412         {
 413                 int i;
 414                 unsigned char *pd;
 415                 // clear top and bottom trash
 416                 for (pd = PicoDraw2FB+8, i = 8; i > 0; i--, pd += 512)
 417                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
 418                 for (pd = PicoDraw2FB+512*232+8, i = 8; i > 0; i--, pd += 512)
 419                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
 420         }
 421
 422         blitscreen_clut();
 423 }
 424
 425
 426 static void blit2(const char *fps, const char *notice, int lagging_behind)
 427 {
 428         int vsync = 0, emu_opt = currentConfig.EmuOpt;
 429
 430         if (notice || (emu_opt & 2)) {
 431                 if (notice)      osd_text(4, notice, 0, 0);
 432                 if (emu_opt & 2) osd_text(OSD_FPS_X, fps, 0, 0);
 433         }
 434
 435         //dbg_text();
 436
 437         if ((emu_opt & 0x400) && (PicoMCD & 1))
 438                 cd_leds();
 439
 440         if (currentConfig.EmuOpt & 0x2000) { // want vsync
 441                 if (!(currentConfig.EmuOpt & 0x10000) || !lagging_behind) vsync = 1;
 442         }
 443
 444         psp_video_flip(vsync);
 445 }
 446
 447 // clears whole screen or just the notice area (in all buffers)
 448 static void clearArea(int full)
 449 {
 450         if (full) {
 451                 memset32_uncached(psp_screen, 0, 512*272*2/4);
 452                 psp_video_flip(0);
 453                 memset32_uncached(psp_screen, 0, 512*272*2/4);
 454                 memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*240/4);
 455                 memset32((int *)VRAM_CACHED_STUFF+512*240/4, 0, 512*240*2/4);
 456         } else {
 457                 void *fb = psp_video_get_active_fb();
 458                 memset32_uncached((int *)((char *)psp_screen + 512*264*2), 0, 512*8*2/4);
 459                 memset32_uncached((int *)((char *)fb         + 512*264*2), 0, 512*8*2/4);
 460         }
 461 }
 462
 463 static void vidResetMode(void)
 464 {
 465         // setup GU
 466         sceGuSync(0,0); // sync with prev
 467         sceGuStart(GU_DIRECT, guCmdList);
 468
 469         sceGuClutMode(GU_PSM_5650,0,0xff,0);
 470         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
 471         sceGuTexFunc(GU_TFX_REPLACE,GU_TCC_RGB);
 472         if (currentConfig.scaling)
 473              sceGuTexFilter(GU_LINEAR, GU_LINEAR);
 474         else sceGuTexFilter(GU_NEAREST, GU_NEAREST);
 475         sceGuTexScale(1.0f,1.0f);
 476         sceGuTexOffset(0.0f,0.0f);
 477
 478         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
 479
 480         // slow rend.
 481         PicoDrawSetColorFormat(-1);
 482         PicoScan = EmuScanSlow;
 483
 484         localPal[0xe0] = 0;
 485         Pico.m.dirtyPal = 1;
 486         blit_16bit_mode = dynamic_palette = 0;
 487
 488         sceGuFinish();
 489         set_scaling_params();
 490         sceGuSync(0,0);
 491 }
 492
 493
 494 /* sound stuff */
 495 #define SOUND_BLOCK_SIZE_NTSC (1470*2) // 1024 // 1152
 496 #define SOUND_BLOCK_SIZE_PAL  (1764*2)
 497 #define SOUND_BLOCK_COUNT    8
 498
 499 static short __attribute__((aligned(4))) sndBuffer[SOUND_BLOCK_SIZE_PAL*SOUND_BLOCK_COUNT + 44100/50*2];
 500 static short *snd_playptr = NULL, *sndBuffer_endptr = NULL;
 501 static int samples_made = 0, samples_done = 0, samples_block = 0;
 502 static int sound_thread_exit = 0;
 503 static SceUID sound_sem = -1;
 504
 505 static void writeSound(int len);
 506
 507 static int sound_thread(SceSize args, void *argp)
 508 {
 509         int ret = 0;
 510
 511         lprintf("sthr: started, priority %i\n", sceKernelGetThreadCurrentPriority());
 512
 513         while (!sound_thread_exit)
 514         {
 515                 if (samples_made - samples_done < samples_block) {
 516                         // wait for data (use at least 2 blocks)
 517                         //lprintf("sthr: wait... (%i)\n", samples_made - samples_done);
 518                         while (samples_made - samples_done <= samples_block*2 && !sound_thread_exit)
 519                                 ret = sceKernelWaitSema(sound_sem, 1, 0);
 520                         if (ret < 0) lprintf("sthr: sceKernelWaitSema: %i\n", ret);
 521                         continue;
 522                 }
 523
 524                 // lprintf("sthr: got data: %i\n", samples_made - samples_done);
 525
 526                 ret = sceAudio_E0727056(PSP_AUDIO_VOLUME_MAX, snd_playptr);
 527
 528                 samples_done += samples_block;
 529                 snd_playptr  += samples_block;
 530                 if (snd_playptr >= sndBuffer_endptr)
 531                         snd_playptr = sndBuffer;
 532                 // 1.5 kernel returns 0, newer ones return # of samples queued
 533                 if (ret < 0)
 534                         lprintf("sthr: sceAudio_E0727056: %08x; pos %i/%i\n", ret, samples_done, samples_made);
 535
 536                 // shouln't happen, but just in case
 537                 if (samples_made - samples_done >= samples_block*3) {
 538                         //lprintf("sthr: block skip (%i)\n", samples_made - samples_done);
 539                         samples_done += samples_block; // skip
 540                         snd_playptr  += samples_block;
 541                 }
 542
 543         }
 544
 545         lprintf("sthr: exit\n");
 546         sceKernelExitDeleteThread(0);
 547         return 0;
 548 }
 549
 550 static void sound_init(void)
 551 {
 552         SceUID thid;
 553         int ret;
 554
 555         sound_sem = sceKernelCreateSema("sndsem", 0, 0, 1, NULL);
 556         if (sound_sem < 0) lprintf("sceKernelCreateSema() failed: %i\n", sound_sem);
 557
 558         samples_made = samples_done = 0;
 559         samples_block = SOUND_BLOCK_SIZE_NTSC; // make sure it goes to sema
 560         sound_thread_exit = 0;
 561         thid = sceKernelCreateThread("sndthread", sound_thread, 0x12, 0x10000, 0, NULL);
 562         if (thid >= 0)
 563         {
 564                 ret = sceKernelStartThread(thid, 0, 0);
 565                 if (ret < 0) lprintf("sound_init: sceKernelStartThread returned %08x\n", ret);
 566         }
 567         else
 568                 lprintf("sceKernelCreateThread failed: %i\n", thid);
 569 }
 570
 571 static void sound_prepare(void)
 572 {
 573         static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
 574         int ret, stereo;
 575
 576         samples_made = samples_done = 0;
 577
 578         if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
 579                 PsndRerate(Pico.m.frame_count ? 1 : 0);
 580         }
 581         stereo=(PicoOpt&8)>>3;
 582
 583         samples_block = Pico.m.pal ? SOUND_BLOCK_SIZE_PAL : SOUND_BLOCK_SIZE_NTSC;
 584         if (PsndRate <= 22050) samples_block /= 2;
 585         sndBuffer_endptr = &sndBuffer[samples_block*SOUND_BLOCK_COUNT];
 586
 587         lprintf("starting audio: %i, len: %i, stereo: %i, pal: %i, block samples: %i\n",
 588                         PsndRate, PsndLen, stereo, Pico.m.pal, samples_block);
 589
 590         // while (sceAudioOutput2GetRestSample() > 0) psp_msleep(100);
 591         // sceAudio_5C37C0AE();
 592         ret = sceAudio_38553111(samples_block/2, PsndRate, 2); // seems to not need that stupid 64byte alignment
 593         if (ret < 0) {
 594                 lprintf("sceAudio_38553111() failed: %i\n", ret);
 595                 sprintf(noticeMsg, "sound init failed (%i), snd disabled", ret);
 596                 noticeMsgTime = sceKernelGetSystemTimeLow();
 597                 currentConfig.EmuOpt &= ~4;
 598         } else {
 599                 PicoWriteSound = writeSound;
 600                 memset32((int *)(void *)sndBuffer, 0, sizeof(sndBuffer)/4);
 601                 snd_playptr = sndBuffer_endptr - samples_block;
 602                 samples_made = samples_block; // send 1 empty block first..
 603                 PsndOut = sndBuffer;
 604                 PsndRate_old = PsndRate;
 605                 PicoOpt_old  = PicoOpt;
 606                 pal_old = Pico.m.pal;
 607         }
 608 }
 609
 610 static void sound_end(void)
 611 {
 612         int i;
 613         if (samples_done == 0)
 614         {
 615                 // if no data is written between sceAudio_38553111 and sceAudio_5C37C0AE calls,
 616                 // we get a deadlock on next sceAudio_38553111 call
 617                 // so this is yet another workaround:
 618                 memset32((int *)(void *)sndBuffer, 0, samples_block*4/4);
 619                 samples_made = samples_block * 3;
 620                 sceKernelSignalSema(sound_sem, 1);
 621         }
 622         sceKernelDelayThread(100*1000);
 623         samples_made = samples_done = 0;
 624         for (i = 0; sceAudioOutput2GetRestSample() > 0 && i < 16; i++)
 625                 psp_msleep(100);
 626         sceAudio_5C37C0AE();
 627 }
 628
 629 static void sound_deinit(void)
 630 {
 631         sound_thread_exit = 1;
 632         sceKernelSignalSema(sound_sem, 1);
 633         sceKernelDeleteSema(sound_sem);
 634         sound_sem = -1;
 635 }
 636
 637 static void writeSound(int len)
 638 {
 639         int ret;
 640         if (PicoOpt&8) len<<=1;
 641
 642         PsndOut += len;
 643         /*if (PsndOut > sndBuffer_endptr) {
 644                 memcpy32((int *)(void *)sndBuffer, (int *)endptr, (PsndOut - endptr + 1) / 2);
 645                 PsndOut = &sndBuffer[PsndOut - endptr];
 646                 lprintf("mov\n");
 647         }
 648         else*/
 649         if (PsndOut > sndBuffer_endptr) lprintf("snd oflow %i!\n", PsndOut - sndBuffer_endptr);
 650         if (PsndOut >= sndBuffer_endptr)
 651                 PsndOut = sndBuffer;
 652
 653         // signal the snd thread
 654         samples_made += len;
 655         if (samples_made - samples_done > samples_block*2) {
 656                 // lprintf("signal, %i/%i\n", samples_done, samples_made);
 657                 ret = sceKernelSignalSema(sound_sem, 1);
 658                 //if (ret < 0) lprintf("snd signal ret %08x\n", ret);
 659         }
 660 }
 661
 662
 663 static void SkipFrame(void)
 664 {
 665         PicoSkipFrame=1;
 666         PicoFrame();
 667         PicoSkipFrame=0;
 668 }
 669
 670 void emu_forcedFrame(void)
 671 {
 672         int po_old = PicoOpt;
 673         int eo_old = currentConfig.EmuOpt;
 674
 675         PicoOpt &= ~0x0010;
 676         PicoOpt |=  0x4080; // soft_scale | acc_sprites
 677         currentConfig.EmuOpt |= 0x80;
 678
 679         vidResetMode();
 680         memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*8/4); // borders
 681         memset32((int *)VRAM_CACHED_STUFF + 512*232/4, 0xe0e0e0e0, 512*8/4);
 682         memset32_uncached((int *)psp_screen + 512*264*2/4, 0, 512*8*2/4);
 683
 684         PicoDrawSetColorFormat(-1);
 685         PicoScan = EmuScanSlow;
 686         EmuScanPrepare();
 687         PicoFrameDrawOnly();
 688         blit1();
 689         sceGuSync(0,0);
 690
 691         PicoOpt = po_old;
 692         currentConfig.EmuOpt = eo_old;
 693 }
 694
 695
 696 static void RunEvents(unsigned int which)
 697 {
 698         if (which & 0x1800) // save or load (but not both)
 699         {
 700                 int do_it = 1;
 701
 702                 if ( emu_checkSaveFile(state_slot) &&
 703                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load
 704                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) // save
 705                 {
 706                         int keys;
 707                         sceGuSync(0,0);
 708                         blit2("", (which & 0x1000) ? "LOAD STATE? (X=yes, O=no)" : "OVERWRITE SAVE? (X=yes, O=no)", 0);
 709                         while( !((keys = psp_pad_read(1)) & (BTN_X|BTN_CIRCLE)) )
 710                                 psp_msleep(50);
 711                         if (keys & BTN_CIRCLE) do_it = 0;
 712                         while(  ((keys = psp_pad_read(1)) & (BTN_X|BTN_CIRCLE)) ) // wait for release
 713                                 psp_msleep(50);
 714                         clearArea(0);
 715                 }
 716
 717                 if (do_it)
 718                 {
 719                         osd_text(4, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME", 1, 0);
 720                         PicoStateProgressCB = emu_msg_cb;
 721                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);
 722                         PicoStateProgressCB = NULL;
 723                         psp_msleep(0);
 724                 }
 725
 726                 reset_timing = 1;
 727         }
 728         if (which & 0x0400) // switch renderer
 729         {
 730                 if (PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |=  0x80; }
 731                 else              { PicoOpt|= 0x10; currentConfig.EmuOpt &= ~0x80; }
 732
 733                 vidResetMode();
 734
 735                 if (PicoOpt&0x10)
 736                         strcpy(noticeMsg, "fast renderer");
 737                 else if (currentConfig.EmuOpt&0x80)
 738                         strcpy(noticeMsg, "accurate renderer");
 739
 740                 noticeMsgTime = sceKernelGetSystemTimeLow();
 741         }
 742         if (which & 0x0300)
 743         {
 744                 if(which&0x0200) {
 745                         state_slot -= 1;
 746                         if(state_slot < 0) state_slot = 9;
 747                 } else {
 748                         state_slot += 1;
 749                         if(state_slot > 9) state_slot = 0;
 750                 }
 751                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");
 752                 noticeMsgTime = sceKernelGetSystemTimeLow();
 753         }
 754 }
 755
 756 static void updateKeys(void)
 757 {
 758         unsigned int keys, allActions[2] = { 0, 0 }, events;
 759         static unsigned int prevEvents = 0;
 760         int i;
 761
 762         keys = psp_pad_read(0);
 763         if (keys & PSP_CTRL_HOME)
 764                 sceDisplayWaitVblankStart();
 765
 766         if (keys & BTN_SELECT)
 767                 engineState = PGS_Menu;
 768
 769         keys &= CONFIGURABLE_KEYS;
 770
 771         for (i = 0; i < 32; i++)
 772         {
 773                 if (keys & (1 << i))
 774                 {
 775                         int pl, acts = currentConfig.KeyBinds[i];
 776                         if (!acts) continue;
 777                         pl = (acts >> 16) & 1;
 778                         if (combo_keys & (1 << i))
 779                         {
 780                                 int u = i+1, acts_c = acts & combo_acts;
 781                                 // let's try to find the other one
 782                                 if (acts_c)
 783                                         for (; u < 32; u++)
 784                                                 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {
 785                                                         allActions[pl] |= acts_c;
 786                                                         keys &= ~((1 << i) | (1 << u));
 787                                                         break;
 788                                                 }
 789                                 // add non-combo actions if combo ones were not found
 790                                 if (!acts_c || u == 32)
 791                                         allActions[pl] |= acts & ~combo_acts;
 792                         } else {
 793                                 allActions[pl] |= acts;
 794                         }
 795                 }
 796         }
 797
 798         PicoPad[0] = (unsigned short) allActions[0];
 799         PicoPad[1] = (unsigned short) allActions[1];
 800
 801         events = (allActions[0] | allActions[1]) >> 16;
 802
 803         // volume is treated in special way and triggered every frame
 804         if ((events & 0x6000) && PsndOut != NULL)
 805         {
 806                 int vol = currentConfig.volume;
 807                 if (events & 0x2000) {
 808                         if (vol < 100) vol++;
 809                 } else {
 810                         if (vol >   0) vol--;
 811                 }
 812                 // FrameworkAudio_SetVolume(vol, vol); // TODO
 813                 sprintf(noticeMsg, "VOL: %02i ", vol);
 814                 noticeMsgTime = sceKernelGetSystemTimeLow();
 815                 currentConfig.volume = vol;
 816         }
 817
 818         events &= ~prevEvents;
 819         if (events) RunEvents(events);
 820         if (movie_data) emu_updateMovie();
 821
 822         prevEvents = (allActions[0] | allActions[1]) >> 16;
 823 }
 824
 825 static void find_combos(void)
 826 {
 827         int act, u;
 828
 829         // find out which keys and actions are combos
 830         combo_keys = combo_acts = 0;
 831         for (act = 0; act < 32; act++)
 832         {
 833                 int keyc = 0, keyc2 = 0;
 834                 if (act == 16 || act == 17) continue; // player2 flag
 835                 if (act > 17)
 836                 {
 837                         for (u = 0; u < 28; u++) // 28 because nub can't produce combos
 838                                 if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;
 839                 }
 840                 else
 841                 {
 842                         for (u = 0; u < 28; u++)
 843                                 if ((currentConfig.KeyBinds[u] & 0x30000) == 0 && // pl. 1
 844                                         (currentConfig.KeyBinds[u] & (1 << act))) keyc++;
 845                         for (u = 0; u < 28; u++)
 846                                 if ((currentConfig.KeyBinds[u] & 0x30000) == 1 && // pl. 2
 847                                         (currentConfig.KeyBinds[u] & (1 << act))) keyc2++;
 848                 }
 849                 if (keyc > 1 || keyc2 > 1)
 850                 {
 851                         // loop again and mark those keys and actions as combo
 852                         for (u = 0; u < 28; u++)
 853                         {
 854                                 if (currentConfig.KeyBinds[u] & (1 << act)) {
 855                                         combo_keys |= 1 << u;
 856                                         combo_acts |= 1 << act;
 857                                 }
 858                         }
 859                 }
 860         }
 861 }
 862
 863
 864 static void simpleWait(unsigned int until)
 865 {
 866         unsigned int tval;
 867         int diff;
 868
 869         tval = sceKernelGetSystemTimeLow();
 870         diff = (int)until - (int)tval;
 871         if (diff >= 512 && diff < 100*1024)
 872                 sceKernelDelayThread(diff);
 873 }
 874
 875 void emu_Loop(void)
 876 {
 877         static int mp3_init_done = 0;
 878         char fpsbuff[24]; // fps count c string
 879         unsigned int tval, tval_prev = 0, tval_thissec = 0; // timing
 880         int frames_done = 0, frames_shown = 0, oldmodes = 0;
 881         int target_fps, target_frametime, lim_time, tval_diff, i;
 882         char *notice = NULL;
 883
 884         lprintf("entered emu_Loop()\n");
 885
 886         fpsbuff[0] = 0;
 887
 888         if (currentConfig.CPUclock != psp_get_cpu_clock()) {
 889                 lprintf("setting cpu clock to %iMHz... ", currentConfig.CPUclock);
 890                 i = psp_set_cpu_clock(currentConfig.CPUclock);
 891                 lprintf(i ? "failed\n" : "done\n");
 892                 currentConfig.CPUclock = psp_get_cpu_clock();
 893         }
 894
 895         // make sure we are in correct mode
 896         vidResetMode();
 897         clearArea(1);
 898         Pico.m.dirtyPal = 1;
 899         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
 900         find_combos();
 901
 902         // pal/ntsc might have changed, reset related stuff
 903         target_fps = Pico.m.pal ? 50 : 60;
 904         target_frametime = Pico.m.pal ? (1000000<<8)/50 : (1000000<<8)/60+1;
 905         reset_timing = 1;
 906
 907         if (PicoMCD & 1) {
 908                 // prepare CD buffer
 909                 PicoCDBufferInit();
 910                 // mp3...
 911                 if (!mp3_init_done) {
 912                         i = mp3_init();
 913                         mp3_init_done = 1;
 914                         if (i) { engineState = PGS_Menu; return; }
 915                 }
 916         }
 917
 918         // prepare sound stuff
 919         PsndOut = NULL;
 920         if (currentConfig.EmuOpt & 4)
 921         {
 922                 sound_prepare();
 923         }
 924
 925         sceDisplayWaitVblankStart();
 926
 927         // loop?
 928         while (engineState == PGS_Running)
 929         {
 930                 int modes;
 931
 932                 tval = sceKernelGetSystemTimeLow();
 933                 if (reset_timing || tval < tval_prev) {
 934                         //stdbg("timing reset");
 935                         reset_timing = 0;
 936                         tval_thissec = tval;
 937                         frames_shown = frames_done = 0;
 938                 }
 939
 940                 // show notice message?
 941                 if (noticeMsgTime) {
 942                         static int noticeMsgSum;
 943                         if (tval - noticeMsgTime > 2000000) { // > 2.0 sec
 944                                 noticeMsgTime = 0;
 945                                 clearArea(0);
 946                                 notice = 0;
 947                         } else {
 948                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
 949                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
 950                                 notice = noticeMsg;
 951                         }
 952                 }
 953
 954                 // check for mode changes
 955                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
 956                 if (modes != oldmodes) {
 957                         oldmodes = modes;
 958                         clearArea(1);
 959                         set_scaling_params();
 960                 }
 961
 962                 // second passed?
 963                 if (tval - tval_thissec >= 1000000)
 964                 {
 965                         // missing 1 frame?
 966                         if (currentConfig.Frameskip < 0 && frames_done < target_fps) {
 967                                 SkipFrame(); frames_done++;
 968                         }
 969
 970                         if (currentConfig.EmuOpt & 2)
 971                                 sprintf(fpsbuff, "%02i/%02i  ", frames_shown, frames_done);
 972
 973                         tval_thissec += 1000000;
 974
 975                         if (currentConfig.Frameskip < 0) {
 976                                 frames_done  -= target_fps; if (frames_done  < 0) frames_done  = 0;
 977                                 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;
 978                                 if (frames_shown > frames_done) frames_shown = frames_done;
 979                         } else {
 980                                 frames_done = frames_shown = 0;
 981                         }
 982                 }
 983 #ifdef PFRAMES
 984                 sprintf(fpsbuff, "%i", Pico.m.frame_count);
 985 #endif
 986
 987                 tval_prev = tval;
 988                 lim_time = (frames_done+1) * target_frametime;
 989                 if (currentConfig.Frameskip >= 0) // frameskip enabled
 990                 {
 991                         for (i = 0; i < currentConfig.Frameskip; i++) {
 992                                 updateKeys();
 993                                 SkipFrame(); frames_done++;
 994                                 if (!(currentConfig.EmuOpt&0x40000)) { // do framelimitting if needed
 995                                         int tval_diff;
 996                                         tval = sceKernelGetSystemTimeLow();
 997                                         tval_diff = (int)(tval - tval_thissec) << 8;
 998                                         if (tval_diff < lim_time) // we are too fast
 999                                                 simpleWait(tval + ((lim_time - tval_diff)>>8));
1000                                 }
1001                                 lim_time += target_frametime;
1002                         }
1003                 }
1004                 else // auto frameskip
1005                 {
1006                         int tval_diff;
1007                         tval = sceKernelGetSystemTimeLow();
1008                         tval_diff = (int)(tval - tval_thissec) << 8;
1009                         if (tval_diff > lim_time && (frames_done/16 < frames_shown))
1010                         {
1011                                 // no time left for this frame - skip
1012                                 if (tval_diff - lim_time >= (300000<<8)) {
1013                                         reset_timing = 1;
1014                                         continue;
1015                                 }
1016                                 updateKeys();
1017                                 SkipFrame(); frames_done++;
1018                                 continue;
1019                         }
1020                 }
1021
1022                 updateKeys();
1023
1024                 if (!(PicoOpt&0x10))
1025                         EmuScanPrepare();
1026
1027                 PicoFrame();
1028
1029                 sceGuSync(0,0);
1030
1031                 // check time
1032                 tval = sceKernelGetSystemTimeLow();
1033                 tval_diff = (int)(tval - tval_thissec) << 8;
1034
1035                 blit2(fpsbuff, notice, tval_diff > lim_time);
1036
1037                 if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300000<<8)) // slowdown detection
1038                         reset_timing = 1;
1039                 else if (!(currentConfig.EmuOpt&0x40000) || currentConfig.Frameskip < 0)
1040                 {
1041                         // sleep if we are still too fast
1042                         if (tval_diff < lim_time)
1043                         {
1044                                 // we are too fast
1045                                 simpleWait(tval + ((lim_time - tval_diff) >> 8));
1046                         }
1047                 }
1048
1049                 frames_done++; frames_shown++;
1050         }
1051
1052
1053         if (PicoMCD & 1) PicoCDBufferFree();
1054
1055         if (PsndOut != NULL) {
1056                 PsndOut = NULL;
1057                 sound_end();
1058         }
1059
1060         // save SRAM
1061         if ((currentConfig.EmuOpt & 1) && SRam.changed) {
1062                 emu_msg_cb("Writing SRAM/BRAM..");
1063                 emu_SaveLoadGame(0, 1);
1064                 SRam.changed = 0;
1065         }
1066
1067         // clear fps counters and stuff
1068         memset32_uncached((int *)psp_video_get_active_fb() + 512*264*2/4, 0, 512*8*2/4);
1069 }
1070
1071
1072 void emu_ResetGame(void)
1073 {
1074         PicoReset(0);
1075         reset_timing = 1;
1076 }
1077