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