psp/emu.c

   1 #include <sys/stat.h>
   2 #include <sys/types.h>
   3 #include <sys/syslimits.h> // PATH_MAX
   4
   5 #include <pspthreadman.h>
   6 #include <pspdisplay.h>
   7 #include <psputils.h>
   8 #include <pspgu.h>
   9 #include <pspaudio.h>
  10
  11 #include "psp.h"
  12 #include "menu.h"
  13 #include "emu.h"
  14 #include "../common/emu.h"
  15 #include "../common/lprintf.h"
  16 #include "../../Pico/PicoInt.h"
  17
  18 #define OSD_FPS_X 424
  19
  20 // additional pspaudio imports, credits to crazyc
  21 int sceAudio_38553111(unsigned short samples, unsigned short freq, char unknown);  // play with conversion?
  22 int sceAudio_5C37C0AE(void);                            // end play?
  23 int sceAudio_E0727056(int volume, void *buffer);        // blocking output
  24 int sceAudioOutput2GetRestSample();
  25
  26
  27 char romFileName[PATH_MAX];
  28 unsigned char *PicoDraw2FB = (unsigned char *)VRAM_CACHED_STUFF + 8; // +8 to be able to skip border with 1 quadword..
  29 int engineState;
  30
  31 static int combo_keys = 0, combo_acts = 0; // keys and actions which need button combos
  32 static unsigned int noticeMsgTime = 0;
  33 int reset_timing = 0; // do we need this?
  34
  35
  36 static void sound_init(void);
  37 static void sound_deinit(void);
  38 static void blit2(const char *fps, const char *notice, int lagging_behind);
  39 static void clearArea(int full);
  40
  41 void emu_noticeMsgUpdated(void)
  42 {
  43         noticeMsgTime = sceKernelGetSystemTimeLow();
  44 }
  45
  46 void emu_getMainDir(char *dst, int len)
  47 {
  48         if (len > 0) *dst = 0;
  49 }
  50
  51 static void osd_text(int x, const char *text, int is_active)
  52 {
  53         unsigned short *screen = is_active ? psp_video_get_active_fb() : psp_screen;
  54         int len = strlen(text) * 8 / 2;
  55         int *p, h;
  56         void *tmp;
  57         for (h = 0; h < 8; h++) {
  58                 p = (int *) (screen+x+512*(264+h));
  59                 p = (int *) ((int)p & ~3); // align
  60                 memset32(p, 0, len);
  61         }
  62         if (is_active) { tmp = psp_screen; psp_screen = screen; } // nasty pointer tricks
  63         emu_textOut16(x, 264, text);
  64         if (is_active) psp_screen = tmp;
  65 }
  66
  67 void emu_msg_cb(const char *msg)
  68 {
  69         osd_text(4, msg, 1);
  70         noticeMsgTime = sceKernelGetSystemTimeLow() - 2000000;
  71
  72         /* assumption: emu_msg_cb gets called only when something slow is about to happen */
  73         reset_timing = 1;
  74 }
  75
  76 static void emu_msg_tray_open(void)
  77 {
  78         strcpy(noticeMsg, "CD tray opened");
  79         noticeMsgTime = sceKernelGetSystemTimeLow();
  80 }
  81
  82
  83 void emu_Init(void)
  84 {
  85         // make dirs for saves, cfgs, etc.
  86         mkdir("mds", 0777);
  87         mkdir("srm", 0777);
  88         mkdir("brm", 0777);
  89         mkdir("cfg", 0777);
  90
  91         sound_init();
  92
  93         PicoInit();
  94         PicoMessage = emu_msg_cb;
  95         PicoMCDopenTray = emu_msg_tray_open;
  96         PicoMCDcloseTray = menu_loop_tray;
  97 }
  98
  99 void emu_Deinit(void)
 100 {
 101         // save SRAM
 102         if ((currentConfig.EmuOpt & 1) && SRam.changed) {
 103                 emu_SaveLoadGame(0, 1);
 104                 SRam.changed = 0;
 105         }
 106
 107         if (!(currentConfig.EmuOpt & 0x20)) {
 108                 FILE *f = fopen(PicoConfigFile, "r+b");
 109                 if (!f) emu_WriteConfig(0);
 110                 else {
 111                         // if we already have config, reload it, except last ROM
 112                         fseek(f, sizeof(currentConfig.lastRomFile), SEEK_SET);
 113                         fread(&currentConfig.EmuOpt, 1, sizeof(currentConfig) - sizeof(currentConfig.lastRomFile), f);
 114                         fseek(f, 0, SEEK_SET);
 115                         fwrite(&currentConfig, 1, sizeof(currentConfig), f);
 116                         fflush(f);
 117                         fclose(f);
 118                 }
 119         }
 120
 121         PicoExit();
 122         sound_deinit();
 123 }
 124
 125 void emu_setDefaultConfig(void)
 126 {
 127         memset(&currentConfig, 0, sizeof(currentConfig));
 128         currentConfig.lastRomFile[0] = 0;
 129         currentConfig.EmuOpt  = 0x1f | 0x680; // | confirm_save, cd_leds, 16bit rend
 130         currentConfig.PicoOpt = 0x0f | 0xc00; // | cd_pcm, cd_cdda
 131         currentConfig.PsndRate = 22050;
 132         currentConfig.PicoRegion = 0; // auto
 133         currentConfig.PicoAutoRgnOrder = 0x184; // US, EU, JP
 134         currentConfig.Frameskip = -1; // auto
 135         currentConfig.volume = 50;
 136         currentConfig.CPUclock = 333;
 137         currentConfig.KeyBinds[ 4] = 1<<0; // SACB RLDU
 138         currentConfig.KeyBinds[ 6] = 1<<1;
 139         currentConfig.KeyBinds[ 7] = 1<<2;
 140         currentConfig.KeyBinds[ 5] = 1<<3;
 141         currentConfig.KeyBinds[14] = 1<<4;
 142         currentConfig.KeyBinds[13] = 1<<5;
 143         currentConfig.KeyBinds[15] = 1<<6;
 144         currentConfig.KeyBinds[ 3] = 1<<7;
 145         currentConfig.KeyBinds[12] = 1<<26; // switch rnd
 146         currentConfig.KeyBinds[ 8] = 1<<27; // save state
 147         currentConfig.KeyBinds[ 9] = 1<<28; // load state
 148         currentConfig.PicoCDBuffers = 0;
 149         currentConfig.scaling = 1; // bilinear filtering for psp
 150         currentConfig.scale = currentConfig.hscale32 = currentConfig.hscale40 = 1.0;
 151 }
 152
 153
 154 extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
 155
 156 struct Vertex
 157 {
 158         short u,v;
 159         short x,y,z;
 160 };
 161
 162 static struct Vertex __attribute__((aligned(4))) g_vertices[2];
 163 static unsigned short __attribute__((aligned(16))) localPal[0x100];
 164 static int dynamic_palette = 0, need_pal_upload = 0, blit_16bit_mode = 0;
 165 static int fbimg_offs = 0;
 166
 167 static void set_scaling_params(void)
 168 {
 169         int src_width, fbimg_width, fbimg_height, fbimg_xoffs, fbimg_yoffs;
 170         g_vertices[0].x = g_vertices[0].y =
 171         g_vertices[0].z = g_vertices[1].z = 0;
 172
 173         fbimg_height = (int)(240.0 * currentConfig.scale + 0.5);
 174         if (Pico.video.reg[12] & 1) {
 175                 fbimg_width = (int)(320.0 * currentConfig.scale * currentConfig.hscale40 + 0.5);
 176                 src_width = 320;
 177         } else {
 178                 fbimg_width = (int)(256.0 * currentConfig.scale * currentConfig.hscale32 + 0.5);
 179                 src_width = 256;
 180         }
 181
 182         if (fbimg_width >= 480) {
 183                 g_vertices[0].u = (fbimg_width-480)/2;
 184                 g_vertices[1].u = src_width - (fbimg_width-480)/2;
 185                 fbimg_width = 480;
 186                 fbimg_xoffs = 0;
 187         } else {
 188                 g_vertices[0].u = 0;
 189                 g_vertices[1].u = src_width;
 190                 fbimg_xoffs = 240 - fbimg_width/2;
 191         }
 192
 193         if (fbimg_height >= 272) {
 194                 g_vertices[0].v = (fbimg_height-272)/2;
 195                 g_vertices[1].v = 240 - (fbimg_height-272)/2;
 196                 fbimg_height = 272;
 197                 fbimg_yoffs = 0;
 198         } else {
 199                 g_vertices[0].v = 0;
 200                 g_vertices[1].v = 240;
 201                 fbimg_yoffs = 136 - fbimg_height/2;
 202         }
 203
 204         g_vertices[1].x = fbimg_width;
 205         g_vertices[1].y = fbimg_height;
 206         if (fbimg_xoffs < 0) fbimg_xoffs = 0;
 207         if (fbimg_yoffs < 0) fbimg_yoffs = 0;
 208         fbimg_offs = (fbimg_yoffs*512 + fbimg_xoffs) * 2; // dst is always 16bit
 209
 210         /*
 211         lprintf("set_scaling_params:\n");
 212         lprintf("offs: %i, %i\n", fbimg_xoffs, fbimg_yoffs);
 213         lprintf("xy0, xy1: %i, %i; %i, %i\n", g_vertices[0].x, g_vertices[0].y, g_vertices[1].x, g_vertices[1].y);
 214         lprintf("uv0, uv1: %i, %i; %i, %i\n", g_vertices[0].u, g_vertices[0].v, g_vertices[1].u, g_vertices[1].v);
 215         */
 216 }
 217
 218 static void do_pal_update(int allow_sh)
 219 {
 220         unsigned int *spal=(void *)Pico.cram;
 221         unsigned int *dpal=(void *)localPal;
 222         int i;
 223
 224         for (i = 0x3f/2; i >= 0; i--)
 225                 dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
 226
 227         if (allow_sh && (Pico.video.reg[0xC]&8)) // shadow/hilight?
 228         {
 229                 // shadowed pixels
 230                 for (i = 0x3f/2; i >= 0; i--)
 231                         dpal[0x20|i] = dpal[0x60|i] = (dpal[i]>>1)&0x738e738e;
 232                 // hilighted pixels
 233                 for (i = 0x3f; i >= 0; i--) {
 234                         int t=localPal[i]&0xe71c;t+=0x4208;
 235                         if (t&0x20) t|=0x1c;
 236                         if (t&0x800) t|=0x700;
 237                         if (t&0x10000) t|=0xe000;
 238                         t&=0xe71c;
 239                         localPal[0x80|i]=(unsigned short)t;
 240                 }
 241                 localPal[0xe0] = 0;
 242         }
 243         Pico.m.dirtyPal = 0;
 244         need_pal_upload = 1;
 245 }
 246
 247 static void do_slowmode_lines(int line_to)
 248 {
 249         int line = 0, line_len = (Pico.video.reg[12]&1) ? 320 : 256;
 250         unsigned short *dst = (unsigned short *)VRAM_STUFF + 512*240/2;
 251         unsigned char  *src = (unsigned char  *)VRAM_CACHED_STUFF + 16;
 252         if (!(Pico.video.reg[1]&8)) { line = 8; dst += 512*8; src += 512*8; }
 253
 254         for (; line < line_to; line++, dst+=512, src+=512)
 255                 amips_clut(dst, src, localPal, line_len);
 256 }
 257
 258 static void EmuScanPrepare(void)
 259 {
 260         HighCol = (unsigned char *)VRAM_CACHED_STUFF + 8;
 261         if (!(Pico.video.reg[1]&8)) HighCol += 8*512;
 262
 263         dynamic_palette = 0;
 264         if (Pico.m.dirtyPal)
 265                 do_pal_update(1);
 266 }
 267
 268 static int EmuScanSlow(unsigned int num, void *sdata)
 269 {
 270         if (!(Pico.video.reg[1]&8)) num += 8;
 271
 272         if (Pico.m.dirtyPal) {
 273                 if (!dynamic_palette) {
 274                         do_slowmode_lines(num);
 275                         dynamic_palette = 1;
 276                 }
 277                 do_pal_update(1);
 278         }
 279
 280         if (dynamic_palette) {
 281                 int line_len = (Pico.video.reg[12]&1) ? 320 : 256;
 282                 void *dst = (char *)VRAM_STUFF + 512*240 + 512*2*num;
 283                 amips_clut(dst, HighCol + 8, localPal, line_len);
 284         } else
 285                 HighCol = (unsigned char *)VRAM_CACHED_STUFF + (num+1)*512 + 8;
 286
 287         return 0;
 288 }
 289
 290 static void blitscreen_clut(void)
 291 {
 292         int offs = fbimg_offs;
 293         offs += (psp_screen == VRAM_FB0) ? VRAMOFFS_FB0 : VRAMOFFS_FB1;
 294
 295         sceGuSync(0,0); // sync with prev
 296         sceGuStart(GU_DIRECT, guCmdList);
 297         sceGuDrawBuffer(GU_PSM_5650, (void *)offs, 512); // point to back buffer
 298
 299         if (dynamic_palette)
 300         {
 301                 if (!blit_16bit_mode) {
 302                         sceGuTexMode(GU_PSM_5650, 0, 0, 0);
 303                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 512*240);
 304
 305                         blit_16bit_mode = 1;
 306                 }
 307         }
 308         else
 309         {
 310                 if (blit_16bit_mode) {
 311                         sceGuClutMode(GU_PSM_5650,0,0xff,0);
 312                         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
 313                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
 314                         blit_16bit_mode = 0;
 315                 }
 316
 317                 if ((PicoOpt&0x10) && Pico.m.dirtyPal)
 318                         do_pal_update(0);
 319
 320                 sceKernelDcacheWritebackAll();
 321
 322                 if (need_pal_upload) {
 323                         need_pal_upload = 0;
 324                         sceGuClutLoad((256/8), localPal); // upload 32*8 entries (256)
 325                 }
 326         }
 327
 328 #if 1
 329         if (g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x)
 330         {
 331                 struct Vertex* vertices;
 332                 int x;
 333
 334                 #define SLICE_WIDTH 32
 335                 for (x = 0; x < g_vertices[1].x; x += SLICE_WIDTH)
 336                 {
 337                         // render sprite
 338                         vertices = (struct Vertex*)sceGuGetMemory(2 * sizeof(struct Vertex));
 339                         memcpy(vertices, g_vertices, 2 * sizeof(struct Vertex));
 340                         vertices[0].u = vertices[0].x = x;
 341                         vertices[1].u = vertices[1].x = x + SLICE_WIDTH;
 342                         sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,vertices);
 343                 }
 344                 // lprintf("listlen: %iB\n", sceGuCheckList()); // ~480 only
 345         }
 346         else
 347 #endif
 348                 sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,g_vertices);
 349
 350         sceGuFinish();
 351 }
 352
 353
 354 static void cd_leds(void)
 355 {
 356         static int old_reg = 0;
 357         unsigned int col_g, col_r, *p;
 358
 359         if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change
 360         old_reg = Pico_mcd->s68k_regs[0];
 361
 362         p = (unsigned int *)((short *)psp_screen + 512*2+4+2);
 363         col_g = (old_reg & 2) ? 0x06000600 : 0;
 364         col_r = (old_reg & 1) ? 0x00180018 : 0;
 365         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
 366         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
 367         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
 368 }
 369
 370
 371 static void dbg_text(void)
 372 {
 373         int *p, h, len;
 374         char text[128];
 375
 376         sprintf(text, "sl: %i, 16b: %i", g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x, blit_16bit_mode);
 377         len = strlen(text) * 8 / 2;
 378         for (h = 0; h < 8; h++) {
 379                 p = (int *) ((unsigned short *) psp_screen+2+512*(256+h));
 380                 p = (int *) ((int)p & ~3); // align
 381                 memset32(p, 0, len);
 382         }
 383         emu_textOut16(2, 256, text);
 384 }
 385
 386
 387 /* called after rendering is done, but frame emulation is not finished */
 388 void blit1(void)
 389 {
 390         if (PicoOpt&0x10)
 391         {
 392                 int i;
 393                 unsigned char *pd;
 394                 // clear top and bottom trash
 395                 for (pd = PicoDraw2FB+8, i = 8; i > 0; i--, pd += 512)
 396                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
 397                 for (pd = PicoDraw2FB+512*232+8, i = 8; i > 0; i--, pd += 512)
 398                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
 399         }
 400
 401         blitscreen_clut();
 402 }
 403
 404
 405 static void blit2(const char *fps, const char *notice, int lagging_behind)
 406 {
 407         int vsync = 0, emu_opt = currentConfig.EmuOpt;
 408
 409         if (notice || (emu_opt & 2)) {
 410                 if (notice)      osd_text(4, notice, 0);
 411                 if (emu_opt & 2) osd_text(OSD_FPS_X, fps, 0);
 412         }
 413
 414         dbg_text();
 415
 416         if ((emu_opt & 0x400) && (PicoMCD & 1))
 417                 cd_leds();
 418
 419         if (currentConfig.EmuOpt & 0x2000) { // want vsync
 420                 if (!(currentConfig.EmuOpt & 0x10000) || !lagging_behind) vsync = 1;
 421         }
 422
 423         psp_video_flip(vsync);
 424 }
 425
 426 // clears whole screen or just the notice area (in all buffers)
 427 static void clearArea(int full)
 428 {
 429         if (full) {
 430                 memset32(psp_screen, 0, 512*272*2/4);
 431                 psp_video_flip(0);
 432                 memset32(psp_screen, 0, 512*272*2/4);
 433                 memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*240/4);
 434                 memset32((int *)VRAM_CACHED_STUFF+512*240/4, 0, 512*240*2/4);
 435         } else {
 436                 void *fb = psp_video_get_active_fb();
 437                 memset32((int *)((char *)psp_screen + 512*264*2), 0, 512*8*2/4);
 438                 memset32((int *)((char *)fb         + 512*264*2), 0, 512*8*2/4);
 439         }
 440 }
 441
 442 static void vidResetMode(void)
 443 {
 444         // setup GU
 445         sceGuSync(0,0); // sync with prev
 446         sceGuStart(GU_DIRECT, guCmdList);
 447
 448         sceGuClutMode(GU_PSM_5650,0,0xff,0);
 449         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
 450         sceGuTexFunc(GU_TFX_REPLACE,GU_TCC_RGB);
 451         if (currentConfig.scaling)
 452              sceGuTexFilter(GU_LINEAR, GU_LINEAR);
 453         else sceGuTexFilter(GU_NEAREST, GU_NEAREST);
 454         sceGuTexScale(1.0f,1.0f);
 455         sceGuTexOffset(0.0f,0.0f);
 456
 457         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
 458
 459         // slow rend.
 460         PicoDrawSetColorFormat(-1);
 461         PicoScan = EmuScanSlow;
 462
 463         localPal[0xe0] = 0;
 464         Pico.m.dirtyPal = 1;
 465         blit_16bit_mode = dynamic_palette = 0;
 466
 467         sceGuFinish();
 468         set_scaling_params();
 469         sceGuSync(0,0);
 470 }
 471
 472
 473 /* sound stuff */
 474 #define SOUND_BLOCK_SIZE_NTSC (1470*2) // 1024 // 1152
 475 #define SOUND_BLOCK_SIZE_PAL  (1764*2)
 476 #define SOUND_BLOCK_COUNT    4
 477
 478 static short __attribute__((aligned(4))) sndBuffer[SOUND_BLOCK_SIZE_PAL*SOUND_BLOCK_COUNT + 44100/50*2];
 479 static short *snd_playptr = NULL, *sndBuffer_endptr = NULL;
 480 static int samples_made = 0, samples_done = 0, samples_block = 0;
 481 static int sound_thread_exit = 0;
 482 static SceUID sound_sem = -1;
 483
 484 static void writeSound(int len);
 485
 486 static int sound_thread(SceSize args, void *argp)
 487 {
 488         int ret;
 489
 490         lprintf("sthr: started, priority %i\n", sceKernelGetThreadCurrentPriority());
 491
 492         while (!sound_thread_exit)
 493         {
 494                 if (samples_made - samples_done < samples_block) {
 495                         // wait for data (use at least 2 blocks)
 496                         //lprintf("sthr: wait... (%i)\n", samples_made - samples_done);
 497                         while (samples_made - samples_done <= samples_block*2 && !sound_thread_exit)
 498                                 ret = sceKernelWaitSema(sound_sem, 1, 0);
 499                         //lprintf("sthr: sceKernelWaitSema: %i\n", ret);
 500                         continue;
 501                 }
 502
 503                 //lprintf("sthr: got data: %i\n", samples_made - samples_done);
 504
 505                 ret = sceAudio_E0727056(PSP_AUDIO_VOLUME_MAX, snd_playptr);
 506
 507                 samples_done += samples_block;
 508                 snd_playptr  += samples_block;
 509                 if (snd_playptr >= sndBuffer_endptr)
 510                         snd_playptr = sndBuffer;
 511                 if (ret)
 512                         lprintf("sthr: outf: %i; pos %i/%i\n", ret, samples_done, samples_made);
 513
 514                 // shouln't happen, but just in case
 515                 if (samples_made - samples_done >= samples_block*3) {
 516                         //lprintf("block skip (%i)\n", samples_made - samples_done);
 517                         samples_done += samples_block; // skip
 518                         snd_playptr  += samples_block;
 519                 }
 520
 521         }
 522
 523         lprintf("sthr: exit\n");
 524         sceKernelExitDeleteThread(0);
 525         return 0;
 526 }
 527
 528 static void sound_init(void)
 529 {
 530         SceUID thid;
 531
 532         sound_sem = sceKernelCreateSema("sndsem", 0, 0, 1, NULL);
 533         if (sound_sem < 0) lprintf("sceKernelCreateSema() failed: %i\n", sound_sem);
 534
 535         samples_made = samples_done = 0;
 536         samples_block = SOUND_BLOCK_SIZE_NTSC; // make sure it goes to sema
 537         sound_thread_exit = 0;
 538         thid = sceKernelCreateThread("sndthread", sound_thread, 0x12, 0x10000, 0, NULL);
 539         if (thid >= 0)
 540         {
 541                 sceKernelStartThread(thid, 0, 0);
 542         }
 543         else
 544                 lprintf("sceKernelCreateThread failed: %i\n", thid);
 545 }
 546
 547 static void sound_prepare(void)
 548 {
 549         static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
 550         int ret, stereo;
 551
 552         samples_made = samples_done = 0;
 553
 554         if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
 555                 PsndRerate(Pico.m.frame_count ? 1 : 0);
 556         }
 557         stereo=(PicoOpt&8)>>3;
 558
 559         samples_block = Pico.m.pal ? SOUND_BLOCK_SIZE_PAL : SOUND_BLOCK_SIZE_NTSC;
 560         if (PsndRate <= 22050) samples_block /= 2;
 561         sndBuffer_endptr = &sndBuffer[samples_block*SOUND_BLOCK_COUNT];
 562
 563         lprintf("starting audio: %i, len: %i, stereo: %i, pal: %i, block samples: %i\n",
 564                         PsndRate, PsndLen, stereo, Pico.m.pal, samples_block);
 565
 566         while (sceAudioOutput2GetRestSample() > 0) psp_msleep(100);
 567         sceAudio_5C37C0AE();
 568         ret = sceAudio_38553111(samples_block/2, PsndRate, 2); // seems to not need that stupid 64byte alignment
 569         if (ret < 0) {
 570                 lprintf("sceAudio_38553111() failed: %i\n", ret);
 571                 sprintf(noticeMsg, "sound init failed (%i), snd disabled", ret);
 572                 noticeMsgTime = sceKernelGetSystemTimeLow();
 573                 currentConfig.EmuOpt &= ~4;
 574         } else {
 575                 PicoWriteSound = writeSound;
 576                 memset32((int *)(void *)sndBuffer, 0, sizeof(sndBuffer)/4);
 577                 snd_playptr = sndBuffer_endptr - samples_block;
 578                 samples_made = samples_block; // send 1 empty block first..
 579                 PsndOut = sndBuffer;
 580                 PsndRate_old = PsndRate;
 581                 PicoOpt_old  = PicoOpt;
 582                 pal_old = Pico.m.pal;
 583         }
 584 }
 585
 586 static void sound_end(void)
 587 {
 588         samples_made = samples_done = 0;
 589         while (sceAudioOutput2GetRestSample() > 0)
 590                 psp_msleep(100);
 591         sceAudio_5C37C0AE();
 592 }
 593
 594 static void sound_deinit(void)
 595 {
 596         sound_thread_exit = 1;
 597         sceKernelSignalSema(sound_sem, 1);
 598         sceKernelDeleteSema(sound_sem);
 599         sound_sem = -1;
 600 }
 601
 602 static void writeSound(int len)
 603 {
 604         int ret;
 605         if (PicoOpt&8) len<<=1;
 606
 607         PsndOut += len;
 608         /*if (PsndOut > sndBuffer_endptr) {
 609                 memcpy32((int *)(void *)sndBuffer, (int *)endptr, (PsndOut - endptr + 1) / 2);
 610                 PsndOut = &sndBuffer[PsndOut - endptr];
 611                 lprintf("mov\n");
 612         }
 613         else*/
 614         if (PsndOut >= sndBuffer_endptr)
 615                 PsndOut = sndBuffer;
 616
 617         // signal the snd thread
 618         samples_made += len;
 619         if (samples_made - samples_done > samples_block*2) {
 620                 // lprintf("signal, %i/%i\n", samples_done, samples_made);
 621                 ret = sceKernelSignalSema(sound_sem, 1);
 622                 // lprintf("signal ret %i\n", ret);
 623         }
 624 }
 625
 626
 627 static void SkipFrame(void)
 628 {
 629         PicoSkipFrame=1;
 630         PicoFrame();
 631         PicoSkipFrame=0;
 632 }
 633
 634 void emu_forcedFrame(void)
 635 {
 636         int po_old = PicoOpt;
 637         int eo_old = currentConfig.EmuOpt;
 638
 639         PicoOpt &= ~0x0010;
 640         PicoOpt |=  0x4080; // soft_scale | acc_sprites
 641         currentConfig.EmuOpt |= 0x80;
 642
 643         vidResetMode();
 644         memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*8/4); // borders
 645         memset32((int *)VRAM_CACHED_STUFF + 512*232/4, 0xe0e0e0e0, 512*8/4);
 646         memset32((int *)psp_screen + 512*264*2/4, 0, 512*8*2/4);
 647
 648         PicoDrawSetColorFormat(-1);
 649         PicoScan = EmuScanSlow;
 650         EmuScanPrepare();
 651         PicoFrameDrawOnly();
 652         blit1();
 653         sceGuSync(0,0);
 654
 655         PicoOpt = po_old;
 656         currentConfig.EmuOpt = eo_old;
 657 }
 658
 659
 660 static void RunEvents(unsigned int which)
 661 {
 662         if (which & 0x1800) // save or load (but not both)
 663         {
 664                 int do_it = 1;
 665
 666                 if ( emu_checkSaveFile(state_slot) &&
 667                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load
 668                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) // save
 669                 {
 670                         int keys;
 671                         sceGuSync(0,0);
 672                         blit2("", (which & 0x1000) ? "LOAD STATE? (X=yes, O=no)" : "OVERWRITE SAVE? (X=yes, O=no)", 0);
 673                         while( !((keys = psp_pad_read(1)) & (BTN_X|BTN_CIRCLE)) )
 674                                 psp_msleep(50);
 675                         if (keys & BTN_CIRCLE) do_it = 0;
 676                         while(  ((keys = psp_pad_read(1)) & (BTN_X|BTN_CIRCLE)) ) // wait for release
 677                                 psp_msleep(50);
 678                         clearArea(0);
 679                 }
 680
 681                 if (do_it)
 682                 {
 683                         osd_text(4, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME", 1);
 684                         PicoStateProgressCB = emu_msg_cb;
 685                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);
 686                         PicoStateProgressCB = NULL;
 687                         psp_msleep(0);
 688                 }
 689
 690                 reset_timing = 1;
 691         }
 692         if (which & 0x0400) // switch renderer
 693         {
 694                 if (PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |=  0x80; }
 695                 else              { PicoOpt|= 0x10; currentConfig.EmuOpt &= ~0x80; }
 696
 697                 vidResetMode();
 698
 699                 if (PicoOpt&0x10)
 700                         strcpy(noticeMsg, "fast renderer");
 701                 else if (currentConfig.EmuOpt&0x80)
 702                         strcpy(noticeMsg, "accurate renderer");
 703
 704                 noticeMsgTime = sceKernelGetSystemTimeLow();
 705         }
 706         if (which & 0x0300)
 707         {
 708                 if(which&0x0200) {
 709                         state_slot -= 1;
 710                         if(state_slot < 0) state_slot = 9;
 711                 } else {
 712                         state_slot += 1;
 713                         if(state_slot > 9) state_slot = 0;
 714                 }
 715                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");
 716                 noticeMsgTime = sceKernelGetSystemTimeLow();
 717         }
 718 }
 719
 720 static void updateKeys(void)
 721 {
 722         unsigned int keys, allActions[2] = { 0, 0 }, events;
 723         static unsigned int prevEvents = 0;
 724         int i;
 725
 726         keys = psp_pad_read(0);
 727         if (keys & PSP_CTRL_HOME)
 728                 sceDisplayWaitVblankStart();
 729
 730         if (keys & BTN_SELECT)
 731                 engineState = PGS_Menu;
 732
 733         keys &= CONFIGURABLE_KEYS;
 734
 735         for (i = 0; i < 32; i++)
 736         {
 737                 if (keys & (1 << i))
 738                 {
 739                         int pl, acts = currentConfig.KeyBinds[i];
 740                         if (!acts) continue;
 741                         pl = (acts >> 16) & 1;
 742                         if (combo_keys & (1 << i))
 743                         {
 744                                 int u = i+1, acts_c = acts & combo_acts;
 745                                 // let's try to find the other one
 746                                 if (acts_c)
 747                                         for (; u < 32; u++)
 748                                                 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {
 749                                                         allActions[pl] |= acts_c;
 750                                                         keys &= ~((1 << i) | (1 << u));
 751                                                         break;
 752                                                 }
 753                                 // add non-combo actions if combo ones were not found
 754                                 if (!acts_c || u == 32)
 755                                         allActions[pl] |= acts & ~combo_acts;
 756                         } else {
 757                                 allActions[pl] |= acts;
 758                         }
 759                 }
 760         }
 761
 762         PicoPad[0] = (unsigned short) allActions[0];
 763         PicoPad[1] = (unsigned short) allActions[1];
 764
 765         events = (allActions[0] | allActions[1]) >> 16;
 766
 767         // volume is treated in special way and triggered every frame
 768         if ((events & 0x6000) && PsndOut != NULL)
 769         {
 770                 int vol = currentConfig.volume;
 771                 if (events & 0x2000) {
 772                         if (vol < 100) vol++;
 773                 } else {
 774                         if (vol >   0) vol--;
 775                 }
 776                 // FrameworkAudio_SetVolume(vol, vol); // TODO
 777                 sprintf(noticeMsg, "VOL: %02i ", vol);
 778                 noticeMsgTime = sceKernelGetSystemTimeLow();
 779                 currentConfig.volume = vol;
 780         }
 781
 782         events &= ~prevEvents;
 783         if (events) RunEvents(events);
 784         if (movie_data) emu_updateMovie();
 785
 786         prevEvents = (allActions[0] | allActions[1]) >> 16;
 787 }
 788
 789 static void find_combos(void)
 790 {
 791         int act, u;
 792
 793         // find out which keys and actions are combos
 794         combo_keys = combo_acts = 0;
 795         for (act = 0; act < 32; act++)
 796         {
 797                 int keyc = 0, keyc2 = 0;
 798                 if (act == 16 || act == 17) continue; // player2 flag
 799                 if (act > 17)
 800                 {
 801                         for (u = 0; u < 32; u++)
 802                                 if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;
 803                 }
 804                 else
 805                 {
 806                         for (u = 0; u < 32; u++)
 807                                 if ((currentConfig.KeyBinds[u] & 0x30000) == 0 && // pl. 1
 808                                         (currentConfig.KeyBinds[u] & (1 << act))) keyc++;
 809                         for (u = 0; u < 32; u++)
 810                                 if ((currentConfig.KeyBinds[u] & 0x30000) == 1 && // pl. 2
 811                                         (currentConfig.KeyBinds[u] & (1 << act))) keyc2++;
 812                         if (keyc2 > keyc) keyc = keyc2;
 813                 }
 814                 if (keyc > 1)
 815                 {
 816                         // loop again and mark those keys and actions as combo
 817                         for (u = 0; u < 32; u++)
 818                         {
 819                                 if (currentConfig.KeyBinds[u] & (1 << act)) {
 820                                         combo_keys |= 1 << u;
 821                                         combo_acts |= 1 << act;
 822                                 }
 823                         }
 824                 }
 825         }
 826 }
 827
 828
 829 static void simpleWait(unsigned int until)
 830 {
 831         unsigned int tval;
 832         int diff;
 833
 834         tval = sceKernelGetSystemTimeLow();
 835         diff = (int)until - (int)tval;
 836         if (diff >= 512 && diff < 100*1024)
 837                 sceKernelDelayThread(diff);
 838 }
 839
 840 void emu_Loop(void)
 841 {
 842         char fpsbuff[24]; // fps count c string
 843         unsigned int tval, tval_prev = 0, tval_thissec = 0; // timing
 844         int frames_done = 0, frames_shown = 0, oldmodes = 0;
 845         int target_fps, target_frametime, lim_time, tval_diff, i;
 846         char *notice = NULL;
 847
 848         lprintf("entered emu_Loop()\n");
 849
 850         fpsbuff[0] = 0;
 851
 852         if (currentConfig.CPUclock != psp_get_cpu_clock()) {
 853                 lprintf("setting cpu clock to %iMHz... ", currentConfig.CPUclock);
 854                 i = psp_set_cpu_clock(currentConfig.CPUclock);
 855                 lprintf(i ? "failed\n" : "done\n");
 856                 currentConfig.CPUclock = psp_get_cpu_clock();
 857         }
 858
 859         // make sure we are in correct mode
 860         vidResetMode();
 861         clearArea(1);
 862         Pico.m.dirtyPal = 1;
 863         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
 864         find_combos();
 865
 866         // pal/ntsc might have changed, reset related stuff
 867         target_fps = Pico.m.pal ? 50 : 60;
 868         target_frametime = Pico.m.pal ? (1000000<<8)/50 : (1000000<<8)/60+1;
 869         reset_timing = 1;
 870
 871         // prepare CD buffer
 872         if (PicoMCD & 1) PicoCDBufferInit();
 873
 874         // prepare sound stuff
 875         PsndOut = NULL;
 876         if (currentConfig.EmuOpt & 4)
 877         {
 878                 sound_prepare();
 879         }
 880
 881         sceDisplayWaitVblankStart();
 882
 883         // loop?
 884         while (engineState == PGS_Running)
 885         {
 886                 int modes;
 887
 888                 tval = sceKernelGetSystemTimeLow();
 889                 if (reset_timing || tval < tval_prev) {
 890                         //stdbg("timing reset");
 891                         reset_timing = 0;
 892                         tval_thissec = tval;
 893                         frames_shown = frames_done = 0;
 894                 }
 895
 896                 // show notice message?
 897                 if (noticeMsgTime) {
 898                         static int noticeMsgSum;
 899                         if (tval - noticeMsgTime > 2000000) { // > 2.0 sec
 900                                 noticeMsgTime = 0;
 901                                 clearArea(0);
 902                                 notice = 0;
 903                         } else {
 904                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
 905                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
 906                                 notice = noticeMsg;
 907                         }
 908                 }
 909
 910                 // check for mode changes
 911                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
 912                 if (modes != oldmodes) {
 913                         oldmodes = modes;
 914                         clearArea(1);
 915                         set_scaling_params();
 916                 }
 917
 918                 // second passed?
 919                 if (tval - tval_thissec >= 1000000)
 920                 {
 921                         // missing 1 frame?
 922                         if (currentConfig.Frameskip < 0 && frames_done < target_fps) {
 923                                 SkipFrame(); frames_done++;
 924                         }
 925
 926                         if (currentConfig.EmuOpt & 2)
 927                                 sprintf(fpsbuff, "%02i/%02i  ", frames_shown, frames_done);
 928
 929                         tval_thissec += 1000000;
 930
 931                         if (currentConfig.Frameskip < 0) {
 932                                 frames_done  -= target_fps; if (frames_done  < 0) frames_done  = 0;
 933                                 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;
 934                                 if (frames_shown > frames_done) frames_shown = frames_done;
 935                         } else {
 936                                 frames_done = frames_shown = 0;
 937                         }
 938                 }
 939 #ifdef PFRAMES
 940                 sprintf(fpsbuff, "%i", Pico.m.frame_count);
 941 #endif
 942
 943                 tval_prev = tval;
 944                 lim_time = (frames_done+1) * target_frametime;
 945                 if (currentConfig.Frameskip >= 0) // frameskip enabled
 946                 {
 947                         for (i = 0; i < currentConfig.Frameskip; i++) {
 948                                 updateKeys();
 949                                 SkipFrame(); frames_done++;
 950                                 if (PsndOut) { // do framelimitting if sound is enabled
 951                                         int tval_diff;
 952                                         tval = sceKernelGetSystemTimeLow();
 953                                         tval_diff = (int)(tval - tval_thissec) << 8;
 954                                         if (tval_diff < lim_time) // we are too fast
 955                                                 simpleWait(tval + ((lim_time - tval_diff)>>8));
 956                                 }
 957                                 lim_time += target_frametime;
 958                         }
 959                 }
 960                 else // auto frameskip
 961                 {
 962                         int tval_diff;
 963                         tval = sceKernelGetSystemTimeLow();
 964                         tval_diff = (int)(tval - tval_thissec) << 8;
 965                         if (tval_diff > lim_time && (frames_done/16 < frames_shown))
 966                         {
 967                                 // no time left for this frame - skip
 968                                 if (tval_diff - lim_time >= (300000<<8)) {
 969                                         reset_timing = 1;
 970                                         continue;
 971                                 }
 972                                 updateKeys();
 973                                 SkipFrame(); frames_done++;
 974                                 continue;
 975                         }
 976                 }
 977
 978                 updateKeys();
 979
 980                 if (!(PicoOpt&0x10))
 981                         EmuScanPrepare();
 982
 983                 PicoFrame();
 984
 985                 sceGuSync(0,0);
 986
 987                 // check time
 988                 tval = sceKernelGetSystemTimeLow();
 989                 tval_diff = (int)(tval - tval_thissec) << 8;
 990
 991                 blit2(fpsbuff, notice, tval_diff > lim_time);
 992
 993                 if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300000<<8)) // slowdown detection
 994                         reset_timing = 1;
 995                 else if (PsndOut != NULL || currentConfig.Frameskip < 0)
 996                 {
 997                         // sleep if we are still too fast
 998                         if (tval_diff < lim_time)
 999                         {
1000                                 // we are too fast
1001                                 simpleWait(tval + ((lim_time - tval_diff) >> 8));
1002                         }
1003                 }
1004
1005                 frames_done++; frames_shown++;
1006         }
1007
1008
1009         if (PicoMCD & 1) PicoCDBufferFree();
1010
1011         if (PsndOut != NULL) {
1012                 PsndOut = NULL;
1013                 sound_end();
1014         }
1015
1016         // save SRAM
1017         if ((currentConfig.EmuOpt & 1) && SRam.changed) {
1018                 emu_msg_cb("Writing SRAM/BRAM..");
1019                 emu_SaveLoadGame(0, 1);
1020                 SRam.changed = 0;
1021         }
1022
1023         // clear fps counters and stuff
1024         memset32((int *)psp_video_get_active_fb() + 512*264*2/4, 0, 512*8*2/4);
1025 }
1026
1027
1028 void emu_ResetGame(void)
1029 {
1030         PicoReset(0);
1031         reset_timing = 1;
1032 }
1033