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/pico_int.h>
  25 #include <pico/cd/cue.h>
  26
  27 #define OSD_FPS_X 432
  28
  29 // additional pspaudio imports, credits to crazyc
  30 int sceAudio_38553111(unsigned short samples, unsigned short freq, char unknown);  // play with conversion?
  31 int sceAudio_5C37C0AE(void);                            // end play?
  32 int sceAudio_E0727056(int volume, void *buffer);        // blocking output
  33 int sceAudioOutput2GetRestSample();
  34
  35
  36 unsigned char *PicoDraw2FB = (unsigned char *)VRAM_CACHED_STUFF + 8; // +8 to be able to skip border with 1 quadword..
  37 int engineStateSuspend;
  38
  39 #define PICO_PEN_ADJUST_X 4
  40 #define PICO_PEN_ADJUST_Y 2
  41 static int pico_pen_x = 320/2, pico_pen_y = 240/2;
  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 int plat_get_root_dir(char *dst, int len)
  49 {
  50         if (len > 0) *dst = 0;
  51         return 0;
  52 }
  53
  54 static void osd_text(int x, const char *text, int is_active, int clear_all)
  55 {
  56         unsigned short *screen = is_active ? psp_video_get_active_fb() : psp_screen;
  57         int len = clear_all ? (480 / 2) : (strlen(text) * 8 / 2);
  58         int *p, h;
  59         void *tmp;
  60         for (h = 0; h < 8; h++) {
  61                 p = (int *) (screen+x+512*(264+h));
  62                 p = (int *) ((int)p & ~3); // align
  63                 memset32_uncached(p, 0, len);
  64         }
  65         if (is_active) { tmp = psp_screen; psp_screen = screen; } // nasty pointer tricks
  66         emu_text_out16(x, 264, text);
  67         if (is_active) psp_screen = tmp;
  68 }
  69
  70 void emu_msg_cb(const char *msg)
  71 {
  72         osd_text(4, msg, 1, 1);
  73         noticeMsgTime = sceKernelGetSystemTimeLow() - 2000000;
  74
  75         /* assumption: emu_msg_cb gets called only when something slow is about to happen */
  76         reset_timing = 1;
  77 }
  78
  79 /* FIXME: move to plat */
  80 void emu_Init(void)
  81 {
  82         sound_init();
  83 }
  84
  85 void emu_Deinit(void)
  86 {
  87         sound_deinit();
  88 }
  89
  90 void pemu_prep_defconfig(void)
  91 {
  92         memset(&defaultConfig, 0, sizeof(defaultConfig));
  93         defaultConfig.EmuOpt    = 0x1d | 0x680; // | <- confirm_save, cd_leds, acc rend
  94         defaultConfig.s_PicoOpt = 0x0f | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX|POPT_ACC_SPRITES;
  95         defaultConfig.s_PsndRate = 22050;
  96         defaultConfig.s_PicoRegion = 0; // auto
  97         defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP
  98         defaultConfig.s_PicoCDBuffers = 64;
  99         defaultConfig.Frameskip = -1; // auto
 100         defaultConfig.CPUclock = 333;
 101         defaultConfig.KeyBinds[ 4] = 1<<0; // SACB RLDU
 102         defaultConfig.KeyBinds[ 6] = 1<<1;
 103         defaultConfig.KeyBinds[ 7] = 1<<2;
 104         defaultConfig.KeyBinds[ 5] = 1<<3;
 105         defaultConfig.KeyBinds[14] = 1<<4;
 106         defaultConfig.KeyBinds[13] = 1<<5;
 107         defaultConfig.KeyBinds[15] = 1<<6;
 108         defaultConfig.KeyBinds[ 3] = 1<<7;
 109         defaultConfig.KeyBinds[12] = 1<<26; // switch rnd
 110         defaultConfig.KeyBinds[ 8] = 1<<27; // save state
 111         defaultConfig.KeyBinds[ 9] = 1<<28; // load state
 112         defaultConfig.KeyBinds[28] = 1<<0; // num "buttons"
 113         defaultConfig.KeyBinds[30] = 1<<1;
 114         defaultConfig.KeyBinds[31] = 1<<2;
 115         defaultConfig.KeyBinds[29] = 1<<3;
 116         defaultConfig.scaling = 1;     // bilinear filtering for psp
 117         defaultConfig.scale = 1.20;    // fullscreen
 118         defaultConfig.hscale40 = 1.25;
 119         defaultConfig.hscale32 = 1.56;
 120         defaultConfig.turbo_rate = 15;
 121 }
 122
 123
 124 extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
 125 extern void amips_clut_6bit(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
 126
 127 static void (*amips_clut_f)(unsigned short *dst, unsigned char *src, unsigned short *pal, int count) = NULL;
 128
 129 struct Vertex
 130 {
 131         short u,v;
 132         short x,y,z;
 133 };
 134
 135 static struct Vertex __attribute__((aligned(4))) g_vertices[2];
 136 static unsigned short __attribute__((aligned(16))) localPal[0x100];
 137 static int dynamic_palette = 0, need_pal_upload = 0, blit_16bit_mode = 0;
 138 static int fbimg_offs = 0;
 139
 140 static void set_scaling_params(void)
 141 {
 142         int src_width, fbimg_width, fbimg_height, fbimg_xoffs, fbimg_yoffs, border_hack = 0;
 143         g_vertices[0].x = g_vertices[0].y =
 144         g_vertices[0].z = g_vertices[1].z = 0;
 145
 146         fbimg_height = (int)(240.0 * currentConfig.scale + 0.5);
 147         if (Pico.video.reg[12] & 1) {
 148                 fbimg_width = (int)(320.0 * currentConfig.scale * currentConfig.hscale40 + 0.5);
 149                 src_width = 320;
 150         } else {
 151                 fbimg_width = (int)(256.0 * currentConfig.scale * currentConfig.hscale32 + 0.5);
 152                 src_width = 256;
 153         }
 154
 155         if (fbimg_width  & 1) fbimg_width++;  // make even
 156         if (fbimg_height & 1) fbimg_height++;
 157
 158         if (fbimg_width >= 480) {
 159                 g_vertices[0].u = (fbimg_width-480)/2;
 160                 g_vertices[1].u = src_width - (fbimg_width-480)/2 - 1;
 161                 fbimg_width = 480;
 162                 fbimg_xoffs = 0;
 163         } else {
 164                 g_vertices[0].u = 0;
 165                 g_vertices[1].u = src_width;
 166                 fbimg_xoffs = 240 - fbimg_width/2;
 167         }
 168         if (fbimg_width > 320 && fbimg_width <= 480) border_hack = 1;
 169
 170         if (fbimg_height >= 272) {
 171                 g_vertices[0].v = (fbimg_height-272)/2;
 172                 g_vertices[1].v = 240 - (fbimg_height-272)/2;
 173                 fbimg_height = 272;
 174                 fbimg_yoffs = 0;
 175         } else {
 176                 g_vertices[0].v = 0;
 177                 g_vertices[1].v = 240;
 178                 fbimg_yoffs = 136 - fbimg_height/2;
 179         }
 180
 181         g_vertices[1].x = fbimg_width;
 182         g_vertices[1].y = fbimg_height;
 183         if (fbimg_xoffs < 0) fbimg_xoffs = 0;
 184         if (fbimg_yoffs < 0) fbimg_yoffs = 0;
 185         if (border_hack) {
 186                 g_vertices[0].u++;
 187                 g_vertices[0].x++;
 188                 g_vertices[1].u--;
 189                 g_vertices[1].x--;
 190         }
 191         fbimg_offs = (fbimg_yoffs*512 + fbimg_xoffs) * 2; // dst is always 16bit
 192
 193         /*
 194         lprintf("set_scaling_params:\n");
 195         lprintf("offs: %i, %i\n", fbimg_xoffs, fbimg_yoffs);
 196         lprintf("xy0, xy1: %i, %i; %i, %i\n", g_vertices[0].x, g_vertices[0].y, g_vertices[1].x, g_vertices[1].y);
 197         lprintf("uv0, uv1: %i, %i; %i, %i\n", g_vertices[0].u, g_vertices[0].v, g_vertices[1].u, g_vertices[1].v);
 198         */
 199 }
 200
 201 static void do_pal_update(int allow_sh, int allow_as)
 202 {
 203         unsigned int *dpal=(void *)localPal;
 204         int i;
 205
 206         //for (i = 0x3f/2; i >= 0; i--)
 207         //      dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
 208         do_pal_convert(localPal, Pico.cram, currentConfig.gamma, currentConfig.gamma2);
 209
 210         Pico.m.dirtyPal = 0;
 211         need_pal_upload = 1;
 212
 213         if (allow_sh && (Pico.video.reg[0xC]&8)) // shadow/hilight?
 214         {
 215                 // shadowed pixels
 216                 for (i = 0x3f/2; i >= 0; i--)
 217                         dpal[0x20|i] = dpal[0x60|i] = (dpal[i]>>1)&0x7bcf7bcf;
 218                 // hilighted pixels
 219                 for (i = 0x3f; i >= 0; i--) {
 220                         int t=localPal[i]&0xf79e;t+=0x4208;
 221                         if (t&0x20) t|=0x1e;
 222                         if (t&0x800) t|=0x780;
 223                         if (t&0x10000) t|=0xf000;
 224                         t&=0xf79e;
 225                         localPal[0x80|i]=(unsigned short)t;
 226                 }
 227                 localPal[0xe0] = 0;
 228                 localPal[0xf0] = 0x001f;
 229         }
 230         else if (allow_as && (rendstatus & PDRAW_SPR_LO_ON_HI))
 231         {
 232                 memcpy32((int *)dpal+0x80/2, (void *)localPal, 0x40*2/4);
 233         }
 234 }
 235
 236 static void do_slowmode_lines(int line_to)
 237 {
 238         int line = 0, line_len = (Pico.video.reg[12]&1) ? 320 : 256;
 239         unsigned short *dst = (unsigned short *)VRAM_STUFF + 512*240/2;
 240         unsigned char  *src = (unsigned char  *)VRAM_CACHED_STUFF + 16;
 241         if (!(Pico.video.reg[1]&8)) { line = 8; dst += 512*8; src += 512*8; }
 242
 243         for (; line < line_to; line++, dst+=512, src+=512)
 244                 amips_clut_f(dst, src, localPal, line_len);
 245 }
 246
 247 static void EmuScanPrepare(void)
 248 {
 249         HighCol = (unsigned char *)VRAM_CACHED_STUFF + 8;
 250         if (!(Pico.video.reg[1]&8)) HighCol += 8*512;
 251
 252         if (dynamic_palette > 0)
 253                 dynamic_palette--;
 254
 255         if (Pico.m.dirtyPal)
 256                 do_pal_update(1, 1);
 257         if ((rendstatus & PDRAW_SPR_LO_ON_HI) && !(Pico.video.reg[0xC]&8))
 258              amips_clut_f = amips_clut_6bit;
 259         else amips_clut_f = amips_clut;
 260 }
 261
 262 static int EmuScanSlowBegin(unsigned int num)
 263 {
 264         if (!(Pico.video.reg[1]&8)) num += 8;
 265
 266         if (!dynamic_palette)
 267                 HighCol = (unsigned char *)VRAM_CACHED_STUFF + num * 512 + 8;
 268
 269         return 0;
 270 }
 271
 272 static int EmuScanSlowEnd(unsigned int num)
 273 {
 274         if (!(Pico.video.reg[1]&8)) num += 8;
 275
 276         if (Pico.m.dirtyPal) {
 277                 if (!dynamic_palette) {
 278                         do_slowmode_lines(num);
 279                         dynamic_palette = 3; // last for 2 more frames
 280                 }
 281                 do_pal_update(1, 1);
 282         }
 283
 284         if (dynamic_palette) {
 285                 int line_len = (Pico.video.reg[12]&1) ? 320 : 256;
 286                 void *dst = (char *)VRAM_STUFF + 512*240 + 512*2*num;
 287                 amips_clut_f(dst, HighCol + 8, localPal, line_len);
 288         }
 289
 290         return 0;
 291 }
 292
 293 static void blitscreen_clut(void)
 294 {
 295         int offs = fbimg_offs;
 296         offs += (psp_screen == VRAM_FB0) ? VRAMOFFS_FB0 : VRAMOFFS_FB1;
 297
 298         sceGuSync(0,0); // sync with prev
 299         sceGuStart(GU_DIRECT, guCmdList);
 300         sceGuDrawBuffer(GU_PSM_5650, (void *)offs, 512); // point to back buffer
 301
 302         if (dynamic_palette)
 303         {
 304                 if (!blit_16bit_mode) { // the current mode is not 16bit
 305                         sceGuTexMode(GU_PSM_5650, 0, 0, 0);
 306                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 512*240);
 307
 308                         blit_16bit_mode = 1;
 309                 }
 310         }
 311         else
 312         {
 313                 if (blit_16bit_mode) {
 314                         sceGuClutMode(GU_PSM_5650,0,0xff,0);
 315                         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
 316                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
 317                         blit_16bit_mode = 0;
 318                 }
 319
 320                 if ((PicoOpt&0x10) && Pico.m.dirtyPal)
 321                         do_pal_update(0, 0);
 322
 323                 sceKernelDcacheWritebackAll();
 324
 325                 if (need_pal_upload) {
 326                         need_pal_upload = 0;
 327                         sceGuClutLoad((256/8), localPal); // upload 32*8 entries (256)
 328                 }
 329         }
 330
 331 #if 1
 332         if (g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x)
 333         {
 334                 struct Vertex* vertices;
 335                 int x;
 336
 337                 #define SLICE_WIDTH 32
 338                 for (x = 0; x < g_vertices[1].x; x += SLICE_WIDTH)
 339                 {
 340                         // render sprite
 341                         vertices = (struct Vertex*)sceGuGetMemory(2 * sizeof(struct Vertex));
 342                         memcpy(vertices, g_vertices, 2 * sizeof(struct Vertex));
 343                         vertices[0].u = vertices[0].x = x;
 344                         vertices[1].u = vertices[1].x = x + SLICE_WIDTH;
 345                         sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,vertices);
 346                 }
 347                 // lprintf("listlen: %iB\n", sceGuCheckList()); // ~480 only
 348         }
 349         else
 350 #endif
 351                 sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,g_vertices);
 352
 353         sceGuFinish();
 354 }
 355
 356
 357 static void cd_leds(void)
 358 {
 359         unsigned int reg, col_g, col_r, *p;
 360
 361         reg = Pico_mcd->s68k_regs[0];
 362
 363         p = (unsigned int *)((short *)psp_screen + 512*2+4+2);
 364         col_g = (reg & 2) ? 0x06000600 : 0;
 365         col_r = (reg & 1) ? 0x00180018 : 0;
 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; p += 512/2 - 12/2;
 368         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
 369 }
 370
 371 static void draw_pico_ptr(void)
 372 {
 373         unsigned char *p = (unsigned char *)VRAM_STUFF + 16;
 374
 375         // only if pen enabled and for 8bit mode
 376         if (pico_inp_mode == 0 || blit_16bit_mode) return;
 377
 378         p += 512 * (pico_pen_y + PICO_PEN_ADJUST_Y);
 379         p += pico_pen_x + PICO_PEN_ADJUST_X;
 380         p[  -1] = 0xe0; p[   0] = 0xf0; p[   1] = 0xe0;
 381         p[ 511] = 0xf0; p[ 512] = 0xf0; p[ 513] = 0xf0;
 382         p[1023] = 0xe0; p[1024] = 0xf0; p[1025] = 0xe0;
 383 }
 384
 385
 386 #if 0
 387 static void dbg_text(void)
 388 {
 389         int *p, h, len;
 390         char text[128];
 391
 392         sprintf(text, "sl: %i, 16b: %i", g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x, blit_16bit_mode);
 393         len = strlen(text) * 8 / 2;
 394         for (h = 0; h < 8; h++) {
 395                 p = (int *) ((unsigned short *) psp_screen+2+512*(256+h));
 396                 p = (int *) ((int)p & ~3); // align
 397                 memset32_uncached(p, 0, len);
 398         }
 399         emu_text_out16(2, 256, text);
 400 }
 401 #endif
 402
 403 /* called after rendering is done, but frame emulation is not finished */
 404 void blit1(void)
 405 {
 406         if (PicoOpt&0x10)
 407         {
 408                 int i;
 409                 unsigned char *pd;
 410                 // clear top and bottom trash
 411                 for (pd = PicoDraw2FB+8, i = 8; i > 0; i--, pd += 512)
 412                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
 413                 for (pd = PicoDraw2FB+512*232+8, i = 8; i > 0; i--, pd += 512)
 414                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
 415         }
 416
 417         if (PicoAHW & PAHW_PICO)
 418                 draw_pico_ptr();
 419
 420         blitscreen_clut();
 421 }
 422
 423
 424 static void blit2(const char *fps, const char *notice, int lagging_behind)
 425 {
 426         int vsync = 0, emu_opt = currentConfig.EmuOpt;
 427
 428         if (notice || (emu_opt & 2)) {
 429                 if (notice)      osd_text(4, notice, 0, 0);
 430                 if (emu_opt & 2) osd_text(OSD_FPS_X, fps, 0, 0);
 431         }
 432
 433         //dbg_text();
 434
 435         if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))
 436                 cd_leds();
 437
 438         if (currentConfig.EmuOpt & 0x2000) { // want vsync
 439                 if (!(currentConfig.EmuOpt & 0x10000) || !lagging_behind) vsync = 1;
 440         }
 441
 442         psp_video_flip(vsync);
 443 }
 444
 445 // clears whole screen or just the notice area (in all buffers)
 446 static void clearArea(int full)
 447 {
 448         if (full) {
 449                 memset32_uncached(psp_screen, 0, 512*272*2/4);
 450                 psp_video_flip(0);
 451                 memset32_uncached(psp_screen, 0, 512*272*2/4);
 452                 memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*240/4);
 453                 memset32((int *)VRAM_CACHED_STUFF+512*240/4, 0, 512*240*2/4);
 454         } else {
 455                 void *fb = psp_video_get_active_fb();
 456                 memset32_uncached((int *)((char *)psp_screen + 512*264*2), 0, 512*8*2/4);
 457                 memset32_uncached((int *)((char *)fb         + 512*264*2), 0, 512*8*2/4);
 458         }
 459 }
 460
 461 static void vidResetMode(void)
 462 {
 463         // setup GU
 464         sceGuSync(0,0); // sync with prev
 465         sceGuStart(GU_DIRECT, guCmdList);
 466
 467         sceGuClutMode(GU_PSM_5650,0,0xff,0);
 468         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
 469         sceGuTexFunc(GU_TFX_REPLACE,GU_TCC_RGB);
 470         if (currentConfig.scaling)
 471              sceGuTexFilter(GU_LINEAR, GU_LINEAR);
 472         else sceGuTexFilter(GU_NEAREST, GU_NEAREST);
 473         sceGuTexScale(1.0f,1.0f);
 474         sceGuTexOffset(0.0f,0.0f);
 475
 476         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
 477
 478         // slow rend.
 479         PicoDrawSetColorFormat(-1);
 480         PicoScanBegin = EmuScanSlowBegin;
 481         PicoScanEnd = EmuScanSlowEnd;
 482
 483         localPal[0xe0] = 0;
 484         localPal[0xf0] = 0x001f;
 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 void plat_debug_cat(char *str)
 494 {
 495         strcat(str, blit_16bit_mode ? "soft clut\n" : "hard clut\n");
 496 }
 497
 498
 499 /* sound stuff */
 500 #define SOUND_BLOCK_SIZE_NTSC (1470*2) // 1024 // 1152
 501 #define SOUND_BLOCK_SIZE_PAL  (1764*2)
 502 #define SOUND_BLOCK_COUNT    8
 503
 504 static short __attribute__((aligned(4))) sndBuffer[SOUND_BLOCK_SIZE_PAL*SOUND_BLOCK_COUNT + 44100/50*2];
 505 static short *snd_playptr = NULL, *sndBuffer_endptr = NULL;
 506 static int samples_made = 0, samples_done = 0, samples_block = 0;
 507 static int sound_thread_exit = 0;
 508 static SceUID sound_sem = -1;
 509
 510 static void writeSound(int len);
 511
 512 static int sound_thread(SceSize args, void *argp)
 513 {
 514         int ret = 0;
 515
 516         lprintf("sthr: started, priority %i\n", sceKernelGetThreadCurrentPriority());
 517
 518         while (!sound_thread_exit)
 519         {
 520                 if (samples_made - samples_done < samples_block) {
 521                         // wait for data (use at least 2 blocks)
 522                         //lprintf("sthr: wait... (%i)\n", samples_made - samples_done);
 523                         while (samples_made - samples_done <= samples_block*2 && !sound_thread_exit)
 524                                 ret = sceKernelWaitSema(sound_sem, 1, 0);
 525                         if (ret < 0) lprintf("sthr: sceKernelWaitSema: %i\n", ret);
 526                         continue;
 527                 }
 528
 529                 // lprintf("sthr: got data: %i\n", samples_made - samples_done);
 530
 531                 ret = sceAudio_E0727056(PSP_AUDIO_VOLUME_MAX, snd_playptr);
 532
 533                 samples_done += samples_block;
 534                 snd_playptr  += samples_block;
 535                 if (snd_playptr >= sndBuffer_endptr)
 536                         snd_playptr = sndBuffer;
 537                 // 1.5 kernel returns 0, newer ones return # of samples queued
 538                 if (ret < 0)
 539                         lprintf("sthr: sceAudio_E0727056: %08x; pos %i/%i\n", ret, samples_done, samples_made);
 540
 541                 // shouln't happen, but just in case
 542                 if (samples_made - samples_done >= samples_block*3) {
 543                         //lprintf("sthr: block skip (%i)\n", samples_made - samples_done);
 544                         samples_done += samples_block; // skip
 545                         snd_playptr  += samples_block;
 546                 }
 547
 548         }
 549
 550         lprintf("sthr: exit\n");
 551         sceKernelExitDeleteThread(0);
 552         return 0;
 553 }
 554
 555 static void sound_init(void)
 556 {
 557         SceUID thid;
 558         int ret;
 559
 560         sound_sem = sceKernelCreateSema("sndsem", 0, 0, 1, NULL);
 561         if (sound_sem < 0) lprintf("sceKernelCreateSema() failed: %i\n", sound_sem);
 562
 563         samples_made = samples_done = 0;
 564         samples_block = SOUND_BLOCK_SIZE_NTSC; // make sure it goes to sema
 565         sound_thread_exit = 0;
 566         thid = sceKernelCreateThread("sndthread", sound_thread, 0x12, 0x10000, 0, NULL);
 567         if (thid >= 0)
 568         {
 569                 ret = sceKernelStartThread(thid, 0, 0);
 570                 if (ret < 0) lprintf("sound_init: sceKernelStartThread returned %08x\n", ret);
 571         }
 572         else
 573                 lprintf("sceKernelCreateThread failed: %i\n", thid);
 574 }
 575
 576 void pemu_sound_start(void)
 577 {
 578         static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
 579         int ret, stereo;
 580
 581         samples_made = samples_done = 0;
 582
 583         if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
 584                 PsndRerate(Pico.m.frame_count ? 1 : 0);
 585         }
 586         stereo=(PicoOpt&8)>>3;
 587
 588         samples_block = Pico.m.pal ? SOUND_BLOCK_SIZE_PAL : SOUND_BLOCK_SIZE_NTSC;
 589         if (PsndRate <= 22050) samples_block /= 2;
 590         sndBuffer_endptr = &sndBuffer[samples_block*SOUND_BLOCK_COUNT];
 591
 592         lprintf("starting audio: %i, len: %i, stereo: %i, pal: %i, block samples: %i\n",
 593                         PsndRate, PsndLen, stereo, Pico.m.pal, samples_block);
 594
 595         // while (sceAudioOutput2GetRestSample() > 0) psp_msleep(100);
 596         // sceAudio_5C37C0AE();
 597         ret = sceAudio_38553111(samples_block/2, PsndRate, 2); // seems to not need that stupid 64byte alignment
 598         if (ret < 0) {
 599                 lprintf("sceAudio_38553111() failed: %i\n", ret);
 600                 emu_status_msg("sound init failed (%i), snd disabled", ret);
 601                 currentConfig.EmuOpt &= ~EOPT_EN_SOUND;
 602         } else {
 603                 PicoWriteSound = writeSound;
 604                 memset32((int *)(void *)sndBuffer, 0, sizeof(sndBuffer)/4);
 605                 snd_playptr = sndBuffer_endptr - samples_block;
 606                 samples_made = samples_block; // send 1 empty block first..
 607                 PsndOut = sndBuffer;
 608                 PsndRate_old = PsndRate;
 609                 PicoOpt_old  = PicoOpt;
 610                 pal_old = Pico.m.pal;
 611         }
 612 }
 613
 614 void pemu_sound_stop(void)
 615 {
 616         int i;
 617         if (samples_done == 0)
 618         {
 619                 // if no data is written between sceAudio_38553111 and sceAudio_5C37C0AE calls,
 620                 // we get a deadlock on next sceAudio_38553111 call
 621                 // so this is yet another workaround:
 622                 memset32((int *)(void *)sndBuffer, 0, samples_block*4/4);
 623                 samples_made = samples_block * 3;
 624                 sceKernelSignalSema(sound_sem, 1);
 625         }
 626         sceKernelDelayThread(100*1000);
 627         samples_made = samples_done = 0;
 628         for (i = 0; sceAudioOutput2GetRestSample() > 0 && i < 16; i++)
 629                 psp_msleep(100);
 630         sceAudio_5C37C0AE();
 631 }
 632
 633 /* wait until we can write more sound */
 634 void pemu_sound_wait(void)
 635 {
 636         // TODO: test this
 637         while (!sound_thread_exit && samples_made - samples_done > samples_block * 4)
 638                 psp_msleep(10);
 639 }
 640
 641 static void sound_deinit(void)
 642 {
 643         sound_thread_exit = 1;
 644         sceKernelSignalSema(sound_sem, 1);
 645         sceKernelDeleteSema(sound_sem);
 646         sound_sem = -1;
 647 }
 648
 649 static void writeSound(int len)
 650 {
 651         int ret;
 652         if (PicoOpt&8) len<<=1;
 653
 654         PsndOut += len;
 655         /*if (PsndOut > sndBuffer_endptr) {
 656                 memcpy32((int *)(void *)sndBuffer, (int *)endptr, (PsndOut - endptr + 1) / 2);
 657                 PsndOut = &sndBuffer[PsndOut - endptr];
 658                 lprintf("mov\n");
 659         }
 660         else*/
 661         if (PsndOut > sndBuffer_endptr) lprintf("snd oflow %i!\n", PsndOut - sndBuffer_endptr);
 662         if (PsndOut >= sndBuffer_endptr)
 663                 PsndOut = sndBuffer;
 664
 665         // signal the snd thread
 666         samples_made += len;
 667         if (samples_made - samples_done > samples_block*2) {
 668                 // lprintf("signal, %i/%i\n", samples_done, samples_made);
 669                 ret = sceKernelSignalSema(sound_sem, 1);
 670                 //if (ret < 0) lprintf("snd signal ret %08x\n", ret);
 671         }
 672 }
 673
 674
 675 static void SkipFrame(void)
 676 {
 677         PicoSkipFrame=1;
 678         PicoFrame();
 679         PicoSkipFrame=0;
 680 }
 681
 682 void pemu_forced_frame(int opts)
 683 {
 684         int po_old = PicoOpt;
 685         int eo_old = currentConfig.EmuOpt;
 686
 687         PicoOpt &= ~0x10;
 688         PicoOpt |= opts|POPT_ACC_SPRITES;
 689         currentConfig.EmuOpt |= 0x80;
 690
 691         vidResetMode();
 692         memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*8/4); // borders
 693         memset32((int *)VRAM_CACHED_STUFF + 512*232/4, 0xe0e0e0e0, 512*8/4);
 694         memset32_uncached((int *)psp_screen + 512*264*2/4, 0, 512*8*2/4);
 695
 696         PicoDrawSetColorFormat(-1);
 697         PicoScanBegin = EmuScanSlowBegin;
 698         PicoScanEnd = EmuScanSlowEnd;
 699         EmuScanPrepare();
 700         PicoFrameDrawOnly();
 701         blit1();
 702         sceGuSync(0,0);
 703
 704         PicoOpt = po_old;
 705         currentConfig.EmuOpt = eo_old;
 706 }
 707
 708
 709 static void RunEventsPico(unsigned int events, unsigned int keys)
 710 {
 711         emu_RunEventsPico(events);
 712
 713         if (pico_inp_mode != 0)
 714         {
 715                 PicoPad[0] &= ~0x0f; // release UDLR
 716                 if (keys & PBTN_UP)   { pico_pen_y--; if (pico_pen_y < 8) pico_pen_y = 8; }
 717                 if (keys & PBTN_DOWN) { pico_pen_y++; if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y; }
 718                 if (keys & PBTN_LEFT) { pico_pen_x--; if (pico_pen_x < 0) pico_pen_x = 0; }
 719                 if (keys & PBTN_RIGHT) {
 720                         int lim = (Pico.video.reg[12]&1) ? 319 : 255;
 721                         pico_pen_x++;
 722                         if (pico_pen_x > lim-PICO_PEN_ADJUST_X)
 723                                 pico_pen_x = lim-PICO_PEN_ADJUST_X;
 724                 }
 725                 PicoPicohw.pen_pos[0] = pico_pen_x;
 726                 if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;
 727                 PicoPicohw.pen_pos[0] += 0x3c;
 728                 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);
 729         }
 730 }
 731
 732 static void RunEvents(unsigned int which)
 733 {
 734         if (which & 0x1800) // save or load (but not both)
 735         {
 736                 int do_it = 1;
 737
 738                 if ( emu_check_save_file(state_slot) &&
 739                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load
 740                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) // save
 741                 {
 742                         int keys;
 743                         sceGuSync(0,0);
 744                         blit2("", (which & 0x1000) ? "LOAD STATE? (X=yes, O=no)" : "OVERWRITE SAVE? (X=yes, O=no)", 0);
 745                         while( !((keys = psp_pad_read(1)) & (PBTN_X|PBTN_CIRCLE)) )
 746                                 psp_msleep(50);
 747                         if (keys & PBTN_CIRCLE) do_it = 0;
 748                         while(  ((keys = psp_pad_read(1)) & (PBTN_X|PBTN_CIRCLE)) ) // wait for release
 749                                 psp_msleep(50);
 750                         clearArea(0);
 751                 }
 752
 753                 if (do_it)
 754                 {
 755                         osd_text(4, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME", 1, 0);
 756                         PicoStateProgressCB = emu_msg_cb;
 757                         emu_save_load_game((which & 0x1000) >> 12, 0);
 758                         PicoStateProgressCB = NULL;
 759                         psp_msleep(0);
 760                 }
 761
 762                 reset_timing = 1;
 763         }
 764         if (which & 0x0400) // switch renderer
 765         {
 766                 if (PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |=  0x80; }
 767                 else              { PicoOpt|= 0x10; currentConfig.EmuOpt &= ~0x80; }
 768
 769                 vidResetMode();
 770
 771                 if (PicoOpt & POPT_ALT_RENDERER)
 772                         emu_status_msg("fast renderer");
 773                 else if (currentConfig.EmuOpt&0x80)
 774                         emu_status_msg("accurate renderer");
 775         }
 776         if (which & 0x0300)
 777         {
 778                 if(which&0x0200) {
 779                         state_slot -= 1;
 780                         if(state_slot < 0) state_slot = 9;
 781                 } else {
 782                         state_slot += 1;
 783                         if(state_slot > 9) state_slot = 0;
 784                 }
 785                 emu_status_msg("SAVE SLOT %i [%s]", state_slot,
 786                         emu_check_save_file(state_slot) ? "USED" : "FREE");
 787         }
 788 }
 789
 790 static void updateKeys(void)
 791 {
 792         unsigned int keys, allActions[2] = { 0, 0 }, events;
 793         static unsigned int prevEvents = 0;
 794         int i;
 795
 796         /* FIXME: port to input fw, merge with emu.c:emu_update_input() */
 797         keys = psp_pad_read(0);
 798         if (keys & PSP_CTRL_HOME)
 799                 sceDisplayWaitVblankStart();
 800
 801         if (keys & PBTN_SELECT)
 802                 engineState = PGS_Menu;
 803
 804         keys &= CONFIGURABLE_KEYS;
 805
 806         PicoPad[0] = allActions[0] & 0xfff;
 807         PicoPad[1] = allActions[1] & 0xfff;
 808
 809         if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);
 810         if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);
 811
 812         events = (allActions[0] | allActions[1]) >> 16;
 813
 814         if ((events ^ prevEvents) & 0x40) {
 815                 emu_set_fastforward(events & 0x40);
 816                 reset_timing = 1;
 817         }
 818
 819         events &= ~prevEvents;
 820
 821         if (PicoAHW == PAHW_PICO)
 822                 RunEventsPico(events, keys);
 823         if (events) RunEvents(events);
 824         if (movie_data) emu_updateMovie();
 825
 826         prevEvents = (allActions[0] | allActions[1]) >> 16;
 827 }
 828
 829
 830 static void simpleWait(unsigned int until)
 831 {
 832         unsigned int tval;
 833         int diff;
 834
 835         tval = sceKernelGetSystemTimeLow();
 836         diff = (int)until - (int)tval;
 837         if (diff >= 512 && diff < 100*1024)
 838                 sceKernelDelayThread(diff);
 839 }
 840
 841 void pemu_loop(void)
 842 {
 843         static int mp3_init_done = 0;
 844         char fpsbuff[24]; // fps count c string
 845         unsigned int tval, tval_thissec = 0; // timing
 846         int target_fps, target_frametime, lim_time, tval_diff, i, oldmodes = 0;
 847         int pframes_done, pframes_shown; // "period" frames, used for sync
 848         int  frames_done,  frames_shown, tval_fpsc = 0; // actual frames
 849         char *notice = NULL;
 850
 851         lprintf("entered emu_Loop()\n");
 852
 853         fpsbuff[0] = 0;
 854
 855         if (currentConfig.CPUclock != psp_get_cpu_clock()) {
 856                 lprintf("setting cpu clock to %iMHz... ", currentConfig.CPUclock);
 857                 i = psp_set_cpu_clock(currentConfig.CPUclock);
 858                 lprintf(i ? "failed\n" : "done\n");
 859                 currentConfig.CPUclock = psp_get_cpu_clock();
 860         }
 861
 862         // make sure we are in correct mode
 863         vidResetMode();
 864         clearArea(1);
 865         Pico.m.dirtyPal = 1;
 866         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
 867
 868         // pal/ntsc might have changed, reset related stuff
 869         target_fps = Pico.m.pal ? 50 : 60;
 870         target_frametime = Pico.m.pal ? (1000000<<8)/50 : (1000000<<8)/60+1;
 871         reset_timing = 1;
 872
 873         if (PicoAHW & PAHW_MCD) {
 874                 // prepare CD buffer
 875                 PicoCDBufferInit();
 876                 // mp3...
 877                 if (!mp3_init_done) {
 878                         i = mp3_init();
 879                         mp3_init_done = 1;
 880                         if (i) { engineState = PGS_Menu; return; }
 881                 }
 882         }
 883
 884         // prepare sound stuff
 885         PsndOut = NULL;
 886         if (currentConfig.EmuOpt & EOPT_EN_SOUND)
 887         {
 888                 pemu_sound_start();
 889         }
 890
 891         sceDisplayWaitVblankStart();
 892         pframes_shown = pframes_done =
 893          frames_shown =  frames_done = 0;
 894
 895         tval_fpsc = sceKernelGetSystemTimeLow();
 896
 897         // loop?
 898         while (engineState == PGS_Running)
 899         {
 900                 int modes;
 901
 902                 tval = sceKernelGetSystemTimeLow();
 903                 if (reset_timing || tval < tval_fpsc) {
 904                         //stdbg("timing reset");
 905                         reset_timing = 0;
 906                         tval_thissec = tval;
 907                         pframes_shown = pframes_done = 0;
 908                 }
 909
 910                 // show notice message?
 911                 if (noticeMsgTime) {
 912                         static int noticeMsgSum;
 913                         if (tval - noticeMsgTime > 2000000) { // > 2.0 sec
 914                                 noticeMsgTime = 0;
 915                                 clearArea(0);
 916                                 notice = 0;
 917                         } else {
 918                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
 919                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
 920                                 notice = noticeMsg;
 921                         }
 922                 }
 923
 924                 // check for mode changes
 925                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
 926                 if (modes != oldmodes) {
 927                         oldmodes = modes;
 928                         clearArea(1);
 929                         set_scaling_params();
 930                 }
 931
 932                 // second passed?
 933                 if (tval - tval_fpsc >= 1000000)
 934                 {
 935                         if (currentConfig.EmuOpt & 2)
 936                                 sprintf(fpsbuff, "%02i/%02i  ", frames_shown, frames_done);
 937                         frames_done = frames_shown = 0;
 938                         tval_fpsc += 1000000;
 939                 }
 940
 941                 if (tval - tval_thissec >= 1000000)
 942                 {
 943                         // missing 1 frame?
 944                         if (currentConfig.Frameskip < 0 && pframes_done < target_fps) {
 945                                 SkipFrame(); pframes_done++; frames_done++;
 946                         }
 947
 948                         tval_thissec += 1000000;
 949
 950                         if (currentConfig.Frameskip < 0) {
 951                                 pframes_done  -= target_fps; if (pframes_done  < 0) pframes_done  = 0;
 952                                 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;
 953                                 if (pframes_shown > pframes_done) pframes_shown = pframes_done;
 954                         } else {
 955                                 pframes_done = pframes_shown = 0;
 956                         }
 957                 }
 958 #ifdef PFRAMES
 959                 sprintf(fpsbuff, "%i", Pico.m.frame_count);
 960 #endif
 961
 962                 lim_time = (pframes_done+1) * target_frametime;
 963                 if (currentConfig.Frameskip >= 0) // frameskip enabled
 964                 {
 965                         for (i = 0; i < currentConfig.Frameskip; i++) {
 966                                 updateKeys();
 967                                 SkipFrame(); pframes_done++; frames_done++;
 968                                 if (!(currentConfig.EmuOpt&0x40000)) { // do framelimitting if needed
 969                                         int tval_diff;
 970                                         tval = sceKernelGetSystemTimeLow();
 971                                         tval_diff = (int)(tval - tval_thissec) << 8;
 972                                         if (tval_diff < lim_time) // we are too fast
 973                                                 simpleWait(tval + ((lim_time - tval_diff)>>8));
 974                                 }
 975                                 lim_time += target_frametime;
 976                         }
 977                 }
 978                 else // auto frameskip
 979                 {
 980                         int tval_diff;
 981                         tval = sceKernelGetSystemTimeLow();
 982                         tval_diff = (int)(tval - tval_thissec) << 8;
 983                         if (tval_diff > lim_time && (pframes_done/16 < pframes_shown))
 984                         {
 985                                 // no time left for this frame - skip
 986                                 if (tval_diff - lim_time >= (300000<<8)) {
 987                                         reset_timing = 1;
 988                                         continue;
 989                                 }
 990                                 updateKeys();
 991                                 SkipFrame(); pframes_done++; frames_done++;
 992                                 continue;
 993                         }
 994                 }
 995
 996                 updateKeys();
 997
 998                 if (!(PicoOpt&0x10))
 999                         EmuScanPrepare();
1000
1001                 PicoFrame();
1002
1003                 sceGuSync(0,0);
1004
1005                 // check time
1006                 tval = sceKernelGetSystemTimeLow();
1007                 tval_diff = (int)(tval - tval_thissec) << 8;
1008
1009                 blit2(fpsbuff, notice, tval_diff > lim_time);
1010
1011                 if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300000<<8)) { // slowdown detection
1012                         reset_timing = 1;
1013                 }
1014                 else if (!(currentConfig.EmuOpt&0x40000) || currentConfig.Frameskip < 0)
1015                 {
1016                         // sleep if we are still too fast
1017                         if (tval_diff < lim_time)
1018                         {
1019                                 // we are too fast
1020                                 simpleWait(tval + ((lim_time - tval_diff) >> 8));
1021                         }
1022                 }
1023
1024                 pframes_done++; pframes_shown++;
1025                  frames_done++;  frames_shown++;
1026         }
1027
1028
1029         emu_set_fastforward(0);
1030
1031         if (PicoAHW & PAHW_MCD) PicoCDBufferFree();
1032
1033         if (PsndOut != NULL) {
1034                 pemu_sound_stop();
1035                 PsndOut = NULL;
1036         }
1037
1038         // save SRAM
1039         if ((currentConfig.EmuOpt & 1) && SRam.changed) {
1040                 emu_msg_cb("Writing SRAM/BRAM..");
1041                 emu_save_load_game(0, 1);
1042                 SRam.changed = 0;
1043         }
1044
1045         // clear fps counters and stuff
1046         memset32_uncached((int *)psp_video_get_active_fb() + 512*264*2/4, 0, 512*8*2/4);
1047 }
1048
1049 void emu_HandleResume(void)
1050 {
1051         if (!(PicoAHW & PAHW_MCD)) return;
1052
1053         // reopen first CD track
1054         if (Pico_mcd->TOC.Tracks[0].F != NULL)
1055         {
1056                 char *fname = rom_fname_reload;
1057                 int len = strlen(rom_fname_reload);
1058                 cue_data_t *cue_data = NULL;
1059
1060                 if (len > 4 && strcasecmp(fname + len - 4,  ".cue") == 0)
1061                 {
1062                         cue_data = cue_parse(rom_fname_reload);
1063                         if (cue_data != NULL)
1064                                 fname = cue_data->tracks[1].fname;
1065                 }
1066
1067                 lprintf("emu_HandleResume: reopen %s\n", fname);
1068                 pm_close(Pico_mcd->TOC.Tracks[0].F);
1069                 Pico_mcd->TOC.Tracks[0].F = pm_open(fname);
1070                 lprintf("reopen %s\n", Pico_mcd->TOC.Tracks[0].F != NULL ? "ok" : "failed");
1071
1072                 if (cue_data != NULL) cue_destroy(cue_data);
1073         }
1074
1075         mp3_reopen_file();
1076
1077         if (!(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1))
1078                 cdda_start_play();
1079 }
1080