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         defaultConfig.s_PsndRate = 22050;
  93         defaultConfig.s_PicoCDBuffers = 64;
  94         defaultConfig.CPUclock = 333;
  95         defaultConfig.KeyBinds[ 4] = 1<<0; // SACB RLDU
  96         defaultConfig.KeyBinds[ 6] = 1<<1;
  97         defaultConfig.KeyBinds[ 7] = 1<<2;
  98         defaultConfig.KeyBinds[ 5] = 1<<3;
  99         defaultConfig.KeyBinds[14] = 1<<4;
 100         defaultConfig.KeyBinds[13] = 1<<5;
 101         defaultConfig.KeyBinds[15] = 1<<6;
 102         defaultConfig.KeyBinds[ 3] = 1<<7;
 103         defaultConfig.KeyBinds[12] = 1<<26; // switch rnd
 104         defaultConfig.KeyBinds[ 8] = 1<<27; // save state
 105         defaultConfig.KeyBinds[ 9] = 1<<28; // load state
 106         defaultConfig.KeyBinds[28] = 1<<0; // num "buttons"
 107         defaultConfig.KeyBinds[30] = 1<<1;
 108         defaultConfig.KeyBinds[31] = 1<<2;
 109         defaultConfig.KeyBinds[29] = 1<<3;
 110         defaultConfig.scaling = 1;     // bilinear filtering for psp
 111         defaultConfig.scale = 1.20;    // fullscreen
 112         defaultConfig.hscale40 = 1.25;
 113         defaultConfig.hscale32 = 1.56;
 114 }
 115
 116
 117 extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
 118 extern void amips_clut_6bit(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
 119
 120 static void (*amips_clut_f)(unsigned short *dst, unsigned char *src, unsigned short *pal, int count) = NULL;
 121
 122 struct Vertex
 123 {
 124         short u,v;
 125         short x,y,z;
 126 };
 127
 128 static struct Vertex __attribute__((aligned(4))) g_vertices[2];
 129 static unsigned short __attribute__((aligned(16))) localPal[0x100];
 130 static int dynamic_palette = 0, need_pal_upload = 0, blit_16bit_mode = 0;
 131 static int fbimg_offs = 0;
 132
 133 static void set_scaling_params(void)
 134 {
 135         int src_width, fbimg_width, fbimg_height, fbimg_xoffs, fbimg_yoffs, border_hack = 0;
 136         g_vertices[0].x = g_vertices[0].y =
 137         g_vertices[0].z = g_vertices[1].z = 0;
 138
 139         fbimg_height = (int)(240.0 * currentConfig.scale + 0.5);
 140         if (Pico.video.reg[12] & 1) {
 141                 fbimg_width = (int)(320.0 * currentConfig.scale * currentConfig.hscale40 + 0.5);
 142                 src_width = 320;
 143         } else {
 144                 fbimg_width = (int)(256.0 * currentConfig.scale * currentConfig.hscale32 + 0.5);
 145                 src_width = 256;
 146         }
 147
 148         if (fbimg_width  & 1) fbimg_width++;  // make even
 149         if (fbimg_height & 1) fbimg_height++;
 150
 151         if (fbimg_width >= 480) {
 152                 g_vertices[0].u = (fbimg_width-480)/2;
 153                 g_vertices[1].u = src_width - (fbimg_width-480)/2 - 1;
 154                 fbimg_width = 480;
 155                 fbimg_xoffs = 0;
 156         } else {
 157                 g_vertices[0].u = 0;
 158                 g_vertices[1].u = src_width;
 159                 fbimg_xoffs = 240 - fbimg_width/2;
 160         }
 161         if (fbimg_width > 320 && fbimg_width <= 480) border_hack = 1;
 162
 163         if (fbimg_height >= 272) {
 164                 g_vertices[0].v = (fbimg_height-272)/2;
 165                 g_vertices[1].v = 240 - (fbimg_height-272)/2;
 166                 fbimg_height = 272;
 167                 fbimg_yoffs = 0;
 168         } else {
 169                 g_vertices[0].v = 0;
 170                 g_vertices[1].v = 240;
 171                 fbimg_yoffs = 136 - fbimg_height/2;
 172         }
 173
 174         g_vertices[1].x = fbimg_width;
 175         g_vertices[1].y = fbimg_height;
 176         if (fbimg_xoffs < 0) fbimg_xoffs = 0;
 177         if (fbimg_yoffs < 0) fbimg_yoffs = 0;
 178         if (border_hack) {
 179                 g_vertices[0].u++;
 180                 g_vertices[0].x++;
 181                 g_vertices[1].u--;
 182                 g_vertices[1].x--;
 183         }
 184         fbimg_offs = (fbimg_yoffs*512 + fbimg_xoffs) * 2; // dst is always 16bit
 185
 186         /*
 187         lprintf("set_scaling_params:\n");
 188         lprintf("offs: %i, %i\n", fbimg_xoffs, fbimg_yoffs);
 189         lprintf("xy0, xy1: %i, %i; %i, %i\n", g_vertices[0].x, g_vertices[0].y, g_vertices[1].x, g_vertices[1].y);
 190         lprintf("uv0, uv1: %i, %i; %i, %i\n", g_vertices[0].u, g_vertices[0].v, g_vertices[1].u, g_vertices[1].v);
 191         */
 192 }
 193
 194 static void do_pal_update(int allow_sh, int allow_as)
 195 {
 196         unsigned int *dpal=(void *)localPal;
 197         int i;
 198
 199         //for (i = 0x3f/2; i >= 0; i--)
 200         //      dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
 201         do_pal_convert(localPal, Pico.cram, currentConfig.gamma, currentConfig.gamma2);
 202
 203         Pico.m.dirtyPal = 0;
 204         need_pal_upload = 1;
 205
 206         if (allow_sh && (Pico.video.reg[0xC]&8)) // shadow/hilight?
 207         {
 208                 // shadowed pixels
 209                 for (i = 0x3f/2; i >= 0; i--)
 210                         dpal[0x20|i] = dpal[0x60|i] = (dpal[i]>>1)&0x7bcf7bcf;
 211                 // hilighted pixels
 212                 for (i = 0x3f; i >= 0; i--) {
 213                         int t=localPal[i]&0xf79e;t+=0x4208;
 214                         if (t&0x20) t|=0x1e;
 215                         if (t&0x800) t|=0x780;
 216                         if (t&0x10000) t|=0xf000;
 217                         t&=0xf79e;
 218                         localPal[0x80|i]=(unsigned short)t;
 219                 }
 220                 localPal[0xe0] = 0;
 221                 localPal[0xf0] = 0x001f;
 222         }
 223         else if (allow_as && (rendstatus & PDRAW_SPR_LO_ON_HI))
 224         {
 225                 memcpy32((int *)dpal+0x80/2, (void *)localPal, 0x40*2/4);
 226         }
 227 }
 228
 229 static void do_slowmode_lines(int line_to)
 230 {
 231         int line = 0, line_len = (Pico.video.reg[12]&1) ? 320 : 256;
 232         unsigned short *dst = (unsigned short *)VRAM_STUFF + 512*240/2;
 233         unsigned char  *src = (unsigned char  *)VRAM_CACHED_STUFF + 16;
 234         if (!(Pico.video.reg[1]&8)) { line = 8; dst += 512*8; src += 512*8; }
 235
 236         for (; line < line_to; line++, dst+=512, src+=512)
 237                 amips_clut_f(dst, src, localPal, line_len);
 238 }
 239
 240 static void EmuScanPrepare(void)
 241 {
 242         HighCol = (unsigned char *)VRAM_CACHED_STUFF + 8;
 243         if (!(Pico.video.reg[1]&8)) HighCol += 8*512;
 244
 245         if (dynamic_palette > 0)
 246                 dynamic_palette--;
 247
 248         if (Pico.m.dirtyPal)
 249                 do_pal_update(1, 1);
 250         if ((rendstatus & PDRAW_SPR_LO_ON_HI) && !(Pico.video.reg[0xC]&8))
 251              amips_clut_f = amips_clut_6bit;
 252         else amips_clut_f = amips_clut;
 253 }
 254
 255 static int EmuScanSlowBegin(unsigned int num)
 256 {
 257         if (!dynamic_palette)
 258                 HighCol = (unsigned char *)VRAM_CACHED_STUFF + num * 512 + 8;
 259
 260         return 0;
 261 }
 262
 263 static int EmuScanSlowEnd(unsigned int num)
 264 {
 265         if (Pico.m.dirtyPal) {
 266                 if (!dynamic_palette) {
 267                         do_slowmode_lines(num);
 268                         dynamic_palette = 3; // last for 2 more frames
 269                 }
 270                 do_pal_update(1, 1);
 271         }
 272
 273         if (dynamic_palette) {
 274                 int line_len = (Pico.video.reg[12]&1) ? 320 : 256;
 275                 void *dst = (char *)VRAM_STUFF + 512*240 + 512*2*num;
 276                 amips_clut_f(dst, HighCol + 8, localPal, line_len);
 277         }
 278
 279         return 0;
 280 }
 281
 282 static void blitscreen_clut(void)
 283 {
 284         int offs = fbimg_offs;
 285         offs += (psp_screen == VRAM_FB0) ? VRAMOFFS_FB0 : VRAMOFFS_FB1;
 286
 287         sceGuSync(0,0); // sync with prev
 288         sceGuStart(GU_DIRECT, guCmdList);
 289         sceGuDrawBuffer(GU_PSM_5650, (void *)offs, 512); // point to back buffer
 290
 291         if (dynamic_palette)
 292         {
 293                 if (!blit_16bit_mode) { // the current mode is not 16bit
 294                         sceGuTexMode(GU_PSM_5650, 0, 0, 0);
 295                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 512*240);
 296
 297                         blit_16bit_mode = 1;
 298                 }
 299         }
 300         else
 301         {
 302                 if (blit_16bit_mode) {
 303                         sceGuClutMode(GU_PSM_5650,0,0xff,0);
 304                         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
 305                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
 306                         blit_16bit_mode = 0;
 307                 }
 308
 309                 if ((PicoOpt&0x10) && Pico.m.dirtyPal)
 310                         do_pal_update(0, 0);
 311
 312                 sceKernelDcacheWritebackAll();
 313
 314                 if (need_pal_upload) {
 315                         need_pal_upload = 0;
 316                         sceGuClutLoad((256/8), localPal); // upload 32*8 entries (256)
 317                 }
 318         }
 319
 320 #if 1
 321         if (g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x)
 322         {
 323                 struct Vertex* vertices;
 324                 int x;
 325
 326                 #define SLICE_WIDTH 32
 327                 for (x = 0; x < g_vertices[1].x; x += SLICE_WIDTH)
 328                 {
 329                         // render sprite
 330                         vertices = (struct Vertex*)sceGuGetMemory(2 * sizeof(struct Vertex));
 331                         memcpy(vertices, g_vertices, 2 * sizeof(struct Vertex));
 332                         vertices[0].u = vertices[0].x = x;
 333                         vertices[1].u = vertices[1].x = x + SLICE_WIDTH;
 334                         sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,vertices);
 335                 }
 336                 // lprintf("listlen: %iB\n", sceGuCheckList()); // ~480 only
 337         }
 338         else
 339 #endif
 340                 sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,g_vertices);
 341
 342         sceGuFinish();
 343 }
 344
 345
 346 static void cd_leds(void)
 347 {
 348         unsigned int reg, col_g, col_r, *p;
 349
 350         reg = Pico_mcd->s68k_regs[0];
 351
 352         p = (unsigned int *)((short *)psp_screen + 512*2+4+2);
 353         col_g = (reg & 2) ? 0x06000600 : 0;
 354         col_r = (reg & 1) ? 0x00180018 : 0;
 355         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
 356         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
 357         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
 358 }
 359
 360 static void draw_pico_ptr(void)
 361 {
 362         unsigned char *p = (unsigned char *)VRAM_STUFF + 16;
 363
 364         // only if pen enabled and for 8bit mode
 365         if (pico_inp_mode == 0 || blit_16bit_mode) return;
 366
 367         p += 512 * (pico_pen_y + PICO_PEN_ADJUST_Y);
 368         p += pico_pen_x + PICO_PEN_ADJUST_X;
 369         p[  -1] = 0xe0; p[   0] = 0xf0; p[   1] = 0xe0;
 370         p[ 511] = 0xf0; p[ 512] = 0xf0; p[ 513] = 0xf0;
 371         p[1023] = 0xe0; p[1024] = 0xf0; p[1025] = 0xe0;
 372 }
 373
 374
 375 #if 0
 376 static void dbg_text(void)
 377 {
 378         int *p, h, len;
 379         char text[128];
 380
 381         sprintf(text, "sl: %i, 16b: %i", g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x, blit_16bit_mode);
 382         len = strlen(text) * 8 / 2;
 383         for (h = 0; h < 8; h++) {
 384                 p = (int *) ((unsigned short *) psp_screen+2+512*(256+h));
 385                 p = (int *) ((int)p & ~3); // align
 386                 memset32_uncached(p, 0, len);
 387         }
 388         emu_text_out16(2, 256, text);
 389 }
 390 #endif
 391
 392 /* called after rendering is done, but frame emulation is not finished */
 393 void blit1(void)
 394 {
 395         if (PicoOpt&0x10)
 396         {
 397                 int i;
 398                 unsigned char *pd;
 399                 // clear top and bottom trash
 400                 for (pd = PicoDraw2FB+8, i = 8; i > 0; i--, pd += 512)
 401                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
 402                 for (pd = PicoDraw2FB+512*232+8, i = 8; i > 0; i--, pd += 512)
 403                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
 404         }
 405
 406         if (PicoAHW & PAHW_PICO)
 407                 draw_pico_ptr();
 408
 409         blitscreen_clut();
 410 }
 411
 412
 413 static void blit2(const char *fps, const char *notice, int lagging_behind)
 414 {
 415         int vsync = 0, emu_opt = currentConfig.EmuOpt;
 416
 417         if (notice || (emu_opt & 2)) {
 418                 if (notice)      osd_text(4, notice, 0, 0);
 419                 if (emu_opt & 2) osd_text(OSD_FPS_X, fps, 0, 0);
 420         }
 421
 422         //dbg_text();
 423
 424         if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))
 425                 cd_leds();
 426
 427         if (currentConfig.EmuOpt & 0x2000) { // want vsync
 428                 if (!(currentConfig.EmuOpt & 0x10000) || !lagging_behind) vsync = 1;
 429         }
 430
 431         psp_video_flip(vsync);
 432 }
 433
 434 // clears whole screen or just the notice area (in all buffers)
 435 static void clearArea(int full)
 436 {
 437         if (full) {
 438                 memset32_uncached(psp_screen, 0, 512*272*2/4);
 439                 psp_video_flip(0);
 440                 memset32_uncached(psp_screen, 0, 512*272*2/4);
 441                 memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*240/4);
 442                 memset32((int *)VRAM_CACHED_STUFF+512*240/4, 0, 512*240*2/4);
 443         } else {
 444                 void *fb = psp_video_get_active_fb();
 445                 memset32_uncached((int *)((char *)psp_screen + 512*264*2), 0, 512*8*2/4);
 446                 memset32_uncached((int *)((char *)fb         + 512*264*2), 0, 512*8*2/4);
 447         }
 448 }
 449
 450 static void vidResetMode(void)
 451 {
 452         // setup GU
 453         sceGuSync(0,0); // sync with prev
 454         sceGuStart(GU_DIRECT, guCmdList);
 455
 456         sceGuClutMode(GU_PSM_5650,0,0xff,0);
 457         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
 458         sceGuTexFunc(GU_TFX_REPLACE,GU_TCC_RGB);
 459         if (currentConfig.scaling)
 460              sceGuTexFilter(GU_LINEAR, GU_LINEAR);
 461         else sceGuTexFilter(GU_NEAREST, GU_NEAREST);
 462         sceGuTexScale(1.0f,1.0f);
 463         sceGuTexOffset(0.0f,0.0f);
 464
 465         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
 466
 467         // slow rend.
 468         PicoDrawSetColorFormat(-1);
 469         PicoScanBegin = EmuScanSlowBegin;
 470         PicoScanEnd = EmuScanSlowEnd;
 471
 472         localPal[0xe0] = 0;
 473         localPal[0xf0] = 0x001f;
 474         Pico.m.dirtyPal = 1;
 475         blit_16bit_mode = dynamic_palette = 0;
 476
 477         sceGuFinish();
 478         set_scaling_params();
 479         sceGuSync(0,0);
 480 }
 481
 482 void plat_debug_cat(char *str)
 483 {
 484         strcat(str, blit_16bit_mode ? "soft clut\n" : "hard clut\n");
 485 }
 486
 487
 488 /* sound stuff */
 489 #define SOUND_BLOCK_SIZE_NTSC (1470*2) // 1024 // 1152
 490 #define SOUND_BLOCK_SIZE_PAL  (1764*2)
 491 #define SOUND_BLOCK_COUNT    8
 492
 493 static short __attribute__((aligned(4))) sndBuffer[SOUND_BLOCK_SIZE_PAL*SOUND_BLOCK_COUNT + 44100/50*2];
 494 static short *snd_playptr = NULL, *sndBuffer_endptr = NULL;
 495 static int samples_made = 0, samples_done = 0, samples_block = 0;
 496 static int sound_thread_exit = 0;
 497 static SceUID sound_sem = -1;
 498
 499 static void writeSound(int len);
 500
 501 static int sound_thread(SceSize args, void *argp)
 502 {
 503         int ret = 0;
 504
 505         lprintf("sthr: started, priority %i\n", sceKernelGetThreadCurrentPriority());
 506
 507         while (!sound_thread_exit)
 508         {
 509                 if (samples_made - samples_done < samples_block) {
 510                         // wait for data (use at least 2 blocks)
 511                         //lprintf("sthr: wait... (%i)\n", samples_made - samples_done);
 512                         while (samples_made - samples_done <= samples_block*2 && !sound_thread_exit)
 513                                 ret = sceKernelWaitSema(sound_sem, 1, 0);
 514                         if (ret < 0) lprintf("sthr: sceKernelWaitSema: %i\n", ret);
 515                         continue;
 516                 }
 517
 518                 // lprintf("sthr: got data: %i\n", samples_made - samples_done);
 519
 520                 ret = sceAudio_E0727056(PSP_AUDIO_VOLUME_MAX, snd_playptr);
 521
 522                 samples_done += samples_block;
 523                 snd_playptr  += samples_block;
 524                 if (snd_playptr >= sndBuffer_endptr)
 525                         snd_playptr = sndBuffer;
 526                 // 1.5 kernel returns 0, newer ones return # of samples queued
 527                 if (ret < 0)
 528                         lprintf("sthr: sceAudio_E0727056: %08x; pos %i/%i\n", ret, samples_done, samples_made);
 529
 530                 // shouln't happen, but just in case
 531                 if (samples_made - samples_done >= samples_block*3) {
 532                         //lprintf("sthr: block skip (%i)\n", samples_made - samples_done);
 533                         samples_done += samples_block; // skip
 534                         snd_playptr  += samples_block;
 535                 }
 536
 537         }
 538
 539         lprintf("sthr: exit\n");
 540         sceKernelExitDeleteThread(0);
 541         return 0;
 542 }
 543
 544 static void sound_init(void)
 545 {
 546         SceUID thid;
 547         int ret;
 548
 549         sound_sem = sceKernelCreateSema("sndsem", 0, 0, 1, NULL);
 550         if (sound_sem < 0) lprintf("sceKernelCreateSema() failed: %i\n", sound_sem);
 551
 552         samples_made = samples_done = 0;
 553         samples_block = SOUND_BLOCK_SIZE_NTSC; // make sure it goes to sema
 554         sound_thread_exit = 0;
 555         thid = sceKernelCreateThread("sndthread", sound_thread, 0x12, 0x10000, 0, NULL);
 556         if (thid >= 0)
 557         {
 558                 ret = sceKernelStartThread(thid, 0, 0);
 559                 if (ret < 0) lprintf("sound_init: sceKernelStartThread returned %08x\n", ret);
 560         }
 561         else
 562                 lprintf("sceKernelCreateThread failed: %i\n", thid);
 563 }
 564
 565 void pemu_sound_start(void)
 566 {
 567         static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
 568         int ret, stereo;
 569
 570         samples_made = samples_done = 0;
 571
 572         if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
 573                 PsndRerate(Pico.m.frame_count ? 1 : 0);
 574         }
 575         stereo=(PicoOpt&8)>>3;
 576
 577         samples_block = Pico.m.pal ? SOUND_BLOCK_SIZE_PAL : SOUND_BLOCK_SIZE_NTSC;
 578         if (PsndRate <= 22050) samples_block /= 2;
 579         sndBuffer_endptr = &sndBuffer[samples_block*SOUND_BLOCK_COUNT];
 580
 581         lprintf("starting audio: %i, len: %i, stereo: %i, pal: %i, block samples: %i\n",
 582                         PsndRate, PsndLen, stereo, Pico.m.pal, samples_block);
 583
 584         // while (sceAudioOutput2GetRestSample() > 0) psp_msleep(100);
 585         // sceAudio_5C37C0AE();
 586         ret = sceAudio_38553111(samples_block/2, PsndRate, 2); // seems to not need that stupid 64byte alignment
 587         if (ret < 0) {
 588                 lprintf("sceAudio_38553111() failed: %i\n", ret);
 589                 emu_status_msg("sound init failed (%i), snd disabled", ret);
 590                 currentConfig.EmuOpt &= ~EOPT_EN_SOUND;
 591         } else {
 592                 PicoWriteSound = writeSound;
 593                 memset32((int *)(void *)sndBuffer, 0, sizeof(sndBuffer)/4);
 594                 snd_playptr = sndBuffer_endptr - samples_block;
 595                 samples_made = samples_block; // send 1 empty block first..
 596                 PsndOut = sndBuffer;
 597                 PsndRate_old = PsndRate;
 598                 PicoOpt_old  = PicoOpt;
 599                 pal_old = Pico.m.pal;
 600         }
 601 }
 602
 603 void pemu_sound_stop(void)
 604 {
 605         int i;
 606         if (samples_done == 0)
 607         {
 608                 // if no data is written between sceAudio_38553111 and sceAudio_5C37C0AE calls,
 609                 // we get a deadlock on next sceAudio_38553111 call
 610                 // so this is yet another workaround:
 611                 memset32((int *)(void *)sndBuffer, 0, samples_block*4/4);
 612                 samples_made = samples_block * 3;
 613                 sceKernelSignalSema(sound_sem, 1);
 614         }
 615         sceKernelDelayThread(100*1000);
 616         samples_made = samples_done = 0;
 617         for (i = 0; sceAudioOutput2GetRestSample() > 0 && i < 16; i++)
 618                 psp_msleep(100);
 619         sceAudio_5C37C0AE();
 620 }
 621
 622 /* wait until we can write more sound */
 623 void pemu_sound_wait(void)
 624 {
 625         // TODO: test this
 626         while (!sound_thread_exit && samples_made - samples_done > samples_block * 4)
 627                 psp_msleep(10);
 628 }
 629
 630 static void sound_deinit(void)
 631 {
 632         sound_thread_exit = 1;
 633         sceKernelSignalSema(sound_sem, 1);
 634         sceKernelDeleteSema(sound_sem);
 635         sound_sem = -1;
 636 }
 637
 638 static void writeSound(int len)
 639 {
 640         int ret;
 641         if (PicoOpt&8) len<<=1;
 642
 643         PsndOut += len;
 644         /*if (PsndOut > sndBuffer_endptr) {
 645                 memcpy32((int *)(void *)sndBuffer, (int *)endptr, (PsndOut - endptr + 1) / 2);
 646                 PsndOut = &sndBuffer[PsndOut - endptr];
 647                 lprintf("mov\n");
 648         }
 649         else*/
 650         if (PsndOut > sndBuffer_endptr) lprintf("snd oflow %i!\n", PsndOut - sndBuffer_endptr);
 651         if (PsndOut >= sndBuffer_endptr)
 652                 PsndOut = sndBuffer;
 653
 654         // signal the snd thread
 655         samples_made += len;
 656         if (samples_made - samples_done > samples_block*2) {
 657                 // lprintf("signal, %i/%i\n", samples_done, samples_made);
 658                 ret = sceKernelSignalSema(sound_sem, 1);
 659                 //if (ret < 0) lprintf("snd signal ret %08x\n", ret);
 660         }
 661 }
 662
 663
 664 static void SkipFrame(void)
 665 {
 666         PicoSkipFrame=1;
 667         PicoFrame();
 668         PicoSkipFrame=0;
 669 }
 670
 671 void pemu_forced_frame(int opts)
 672 {
 673         int po_old = PicoOpt;
 674         int eo_old = currentConfig.EmuOpt;
 675
 676         PicoOpt &= ~0x10;
 677         PicoOpt |= opts|POPT_ACC_SPRITES;
 678         currentConfig.EmuOpt |= 0x80;
 679
 680         vidResetMode();
 681         memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*8/4); // borders
 682         memset32((int *)VRAM_CACHED_STUFF + 512*232/4, 0xe0e0e0e0, 512*8/4);
 683         memset32_uncached((int *)psp_screen + 512*264*2/4, 0, 512*8*2/4);
 684
 685         PicoDrawSetColorFormat(-1);
 686         PicoScanBegin = EmuScanSlowBegin;
 687         PicoScanEnd = EmuScanSlowEnd;
 688         EmuScanPrepare();
 689         PicoFrameDrawOnly();
 690         blit1();
 691         sceGuSync(0,0);
 692
 693         PicoOpt = po_old;
 694         currentConfig.EmuOpt = eo_old;
 695 }
 696
 697
 698 static void RunEventsPico(unsigned int events, unsigned int keys)
 699 {
 700         emu_RunEventsPico(events);
 701
 702         if (pico_inp_mode != 0)
 703         {
 704                 PicoPad[0] &= ~0x0f; // release UDLR
 705                 if (keys & PBTN_UP)   { pico_pen_y--; if (pico_pen_y < 8) pico_pen_y = 8; }
 706                 if (keys & PBTN_DOWN) { pico_pen_y++; if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y; }
 707                 if (keys & PBTN_LEFT) { pico_pen_x--; if (pico_pen_x < 0) pico_pen_x = 0; }
 708                 if (keys & PBTN_RIGHT) {
 709                         int lim = (Pico.video.reg[12]&1) ? 319 : 255;
 710                         pico_pen_x++;
 711                         if (pico_pen_x > lim-PICO_PEN_ADJUST_X)
 712                                 pico_pen_x = lim-PICO_PEN_ADJUST_X;
 713                 }
 714                 PicoPicohw.pen_pos[0] = pico_pen_x;
 715                 if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;
 716                 PicoPicohw.pen_pos[0] += 0x3c;
 717                 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);
 718         }
 719 }
 720
 721 static void RunEvents(unsigned int which)
 722 {
 723         if (which & 0x1800) // save or load (but not both)
 724         {
 725                 int do_it = 1;
 726
 727                 if ( emu_check_save_file(state_slot) &&
 728                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load
 729                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) // save
 730                 {
 731                         int keys;
 732                         sceGuSync(0,0);
 733                         blit2("", (which & 0x1000) ? "LOAD STATE? (X=yes, O=no)" : "OVERWRITE SAVE? (X=yes, O=no)", 0);
 734                         while( !((keys = psp_pad_read(1)) & (PBTN_X|PBTN_CIRCLE)) )
 735                                 psp_msleep(50);
 736                         if (keys & PBTN_CIRCLE) do_it = 0;
 737                         while(  ((keys = psp_pad_read(1)) & (PBTN_X|PBTN_CIRCLE)) ) // wait for release
 738                                 psp_msleep(50);
 739                         clearArea(0);
 740                 }
 741
 742                 if (do_it)
 743                 {
 744                         osd_text(4, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME", 1, 0);
 745                         PicoStateProgressCB = emu_msg_cb;
 746                         emu_save_load_game((which & 0x1000) >> 12, 0);
 747                         PicoStateProgressCB = NULL;
 748                         psp_msleep(0);
 749                 }
 750
 751                 reset_timing = 1;
 752         }
 753         if (which & 0x0400) // switch renderer
 754         {
 755                 if (PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |=  0x80; }
 756                 else              { PicoOpt|= 0x10; currentConfig.EmuOpt &= ~0x80; }
 757
 758                 vidResetMode();
 759
 760                 if (PicoOpt & POPT_ALT_RENDERER)
 761                         emu_status_msg("fast renderer");
 762                 else if (currentConfig.EmuOpt&0x80)
 763                         emu_status_msg("accurate renderer");
 764         }
 765         if (which & 0x0300)
 766         {
 767                 if(which&0x0200) {
 768                         state_slot -= 1;
 769                         if(state_slot < 0) state_slot = 9;
 770                 } else {
 771                         state_slot += 1;
 772                         if(state_slot > 9) state_slot = 0;
 773                 }
 774                 emu_status_msg("SAVE SLOT %i [%s]", state_slot,
 775                         emu_check_save_file(state_slot) ? "USED" : "FREE");
 776         }
 777 }
 778
 779 static void updateKeys(void)
 780 {
 781         unsigned int keys, allActions[2] = { 0, 0 }, events;
 782         static unsigned int prevEvents = 0;
 783         int i;
 784
 785         /* FIXME: port to input fw, merge with emu.c:emu_update_input() */
 786         keys = psp_pad_read(0);
 787         if (keys & PSP_CTRL_HOME)
 788                 sceDisplayWaitVblankStart();
 789
 790         if (keys & PBTN_SELECT)
 791                 engineState = PGS_Menu;
 792
 793         keys &= CONFIGURABLE_KEYS;
 794
 795         PicoPad[0] = allActions[0] & 0xfff;
 796         PicoPad[1] = allActions[1] & 0xfff;
 797
 798         if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);
 799         if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);
 800
 801         events = (allActions[0] | allActions[1]) >> 16;
 802
 803         if ((events ^ prevEvents) & 0x40) {
 804                 emu_set_fastforward(events & 0x40);
 805                 reset_timing = 1;
 806         }
 807
 808         events &= ~prevEvents;
 809
 810         if (PicoAHW == PAHW_PICO)
 811                 RunEventsPico(events, keys);
 812         if (events) RunEvents(events);
 813         if (movie_data) emu_updateMovie();
 814
 815         prevEvents = (allActions[0] | allActions[1]) >> 16;
 816 }
 817
 818
 819 static void simpleWait(unsigned int until)
 820 {
 821         unsigned int tval;
 822         int diff;
 823
 824         tval = sceKernelGetSystemTimeLow();
 825         diff = (int)until - (int)tval;
 826         if (diff >= 512 && diff < 100*1024)
 827                 sceKernelDelayThread(diff);
 828 }
 829
 830 void pemu_loop(void)
 831 {
 832         static int mp3_init_done = 0;
 833         char fpsbuff[24]; // fps count c string
 834         unsigned int tval, tval_thissec = 0; // timing
 835         int target_fps, target_frametime, lim_time, tval_diff, i, oldmodes = 0;
 836         int pframes_done, pframes_shown; // "period" frames, used for sync
 837         int  frames_done,  frames_shown, tval_fpsc = 0; // actual frames
 838         char *notice = NULL;
 839
 840         lprintf("entered emu_Loop()\n");
 841
 842         fpsbuff[0] = 0;
 843
 844         if (currentConfig.CPUclock != psp_get_cpu_clock()) {
 845                 lprintf("setting cpu clock to %iMHz... ", currentConfig.CPUclock);
 846                 i = psp_set_cpu_clock(currentConfig.CPUclock);
 847                 lprintf(i ? "failed\n" : "done\n");
 848                 currentConfig.CPUclock = psp_get_cpu_clock();
 849         }
 850
 851         // make sure we are in correct mode
 852         vidResetMode();
 853         clearArea(1);
 854         Pico.m.dirtyPal = 1;
 855         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
 856
 857         // pal/ntsc might have changed, reset related stuff
 858         target_fps = Pico.m.pal ? 50 : 60;
 859         target_frametime = Pico.m.pal ? (1000000<<8)/50 : (1000000<<8)/60+1;
 860         reset_timing = 1;
 861
 862         if (PicoAHW & PAHW_MCD) {
 863                 // prepare CD buffer
 864                 PicoCDBufferInit();
 865                 // mp3...
 866                 if (!mp3_init_done) {
 867                         i = mp3_init();
 868                         mp3_init_done = 1;
 869                         if (i) { engineState = PGS_Menu; return; }
 870                 }
 871         }
 872
 873         // prepare sound stuff
 874         PsndOut = NULL;
 875         if (currentConfig.EmuOpt & EOPT_EN_SOUND)
 876         {
 877                 pemu_sound_start();
 878         }
 879
 880         sceDisplayWaitVblankStart();
 881         pframes_shown = pframes_done =
 882          frames_shown =  frames_done = 0;
 883
 884         tval_fpsc = sceKernelGetSystemTimeLow();
 885
 886         // loop?
 887         while (engineState == PGS_Running)
 888         {
 889                 int modes;
 890
 891                 tval = sceKernelGetSystemTimeLow();
 892                 if (reset_timing || tval < tval_fpsc) {
 893                         //stdbg("timing reset");
 894                         reset_timing = 0;
 895                         tval_thissec = tval;
 896                         pframes_shown = pframes_done = 0;
 897                 }
 898
 899                 // show notice message?
 900                 if (noticeMsgTime) {
 901                         static int noticeMsgSum;
 902                         if (tval - noticeMsgTime > 2000000) { // > 2.0 sec
 903                                 noticeMsgTime = 0;
 904                                 clearArea(0);
 905                                 notice = 0;
 906                         } else {
 907                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
 908                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
 909                                 notice = noticeMsg;
 910                         }
 911                 }
 912
 913                 // check for mode changes
 914                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
 915                 if (modes != oldmodes) {
 916                         oldmodes = modes;
 917                         clearArea(1);
 918                         set_scaling_params();
 919                 }
 920
 921                 // second passed?
 922                 if (tval - tval_fpsc >= 1000000)
 923                 {
 924                         if (currentConfig.EmuOpt & 2)
 925                                 sprintf(fpsbuff, "%02i/%02i  ", frames_shown, frames_done);
 926                         frames_done = frames_shown = 0;
 927                         tval_fpsc += 1000000;
 928                 }
 929
 930                 if (tval - tval_thissec >= 1000000)
 931                 {
 932                         // missing 1 frame?
 933                         if (currentConfig.Frameskip < 0 && pframes_done < target_fps) {
 934                                 SkipFrame(); pframes_done++; frames_done++;
 935                         }
 936
 937                         tval_thissec += 1000000;
 938
 939                         if (currentConfig.Frameskip < 0) {
 940                                 pframes_done  -= target_fps; if (pframes_done  < 0) pframes_done  = 0;
 941                                 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;
 942                                 if (pframes_shown > pframes_done) pframes_shown = pframes_done;
 943                         } else {
 944                                 pframes_done = pframes_shown = 0;
 945                         }
 946                 }
 947 #ifdef PFRAMES
 948                 sprintf(fpsbuff, "%i", Pico.m.frame_count);
 949 #endif
 950
 951                 lim_time = (pframes_done+1) * target_frametime;
 952                 if (currentConfig.Frameskip >= 0) // frameskip enabled
 953                 {
 954                         for (i = 0; i < currentConfig.Frameskip; i++) {
 955                                 updateKeys();
 956                                 SkipFrame(); pframes_done++; frames_done++;
 957                                 if (!(currentConfig.EmuOpt&0x40000)) { // do framelimitting if needed
 958                                         int tval_diff;
 959                                         tval = sceKernelGetSystemTimeLow();
 960                                         tval_diff = (int)(tval - tval_thissec) << 8;
 961                                         if (tval_diff < lim_time) // we are too fast
 962                                                 simpleWait(tval + ((lim_time - tval_diff)>>8));
 963                                 }
 964                                 lim_time += target_frametime;
 965                         }
 966                 }
 967                 else // auto frameskip
 968                 {
 969                         int tval_diff;
 970                         tval = sceKernelGetSystemTimeLow();
 971                         tval_diff = (int)(tval - tval_thissec) << 8;
 972                         if (tval_diff > lim_time && (pframes_done/16 < pframes_shown))
 973                         {
 974                                 // no time left for this frame - skip
 975                                 if (tval_diff - lim_time >= (300000<<8)) {
 976                                         reset_timing = 1;
 977                                         continue;
 978                                 }
 979                                 updateKeys();
 980                                 SkipFrame(); pframes_done++; frames_done++;
 981                                 continue;
 982                         }
 983                 }
 984
 985                 updateKeys();
 986
 987                 if (!(PicoOpt&0x10))
 988                         EmuScanPrepare();
 989
 990                 PicoFrame();
 991
 992                 sceGuSync(0,0);
 993
 994                 // check time
 995                 tval = sceKernelGetSystemTimeLow();
 996                 tval_diff = (int)(tval - tval_thissec) << 8;
 997
 998                 blit2(fpsbuff, notice, tval_diff > lim_time);
 999
1000                 if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300000<<8)) { // slowdown detection
1001                         reset_timing = 1;
1002                 }
1003                 else if (!(currentConfig.EmuOpt&0x40000) || currentConfig.Frameskip < 0)
1004                 {
1005                         // sleep if we are still too fast
1006                         if (tval_diff < lim_time)
1007                         {
1008                                 // we are too fast
1009                                 simpleWait(tval + ((lim_time - tval_diff) >> 8));
1010                         }
1011                 }
1012
1013                 pframes_done++; pframes_shown++;
1014                  frames_done++;  frames_shown++;
1015         }
1016
1017
1018         emu_set_fastforward(0);
1019
1020         if (PicoAHW & PAHW_MCD) PicoCDBufferFree();
1021
1022         if (PsndOut != NULL) {
1023                 pemu_sound_stop();
1024                 PsndOut = NULL;
1025         }
1026
1027         // save SRAM
1028         if ((currentConfig.EmuOpt & 1) && SRam.changed) {
1029                 emu_msg_cb("Writing SRAM/BRAM..");
1030                 emu_save_load_game(0, 1);
1031                 SRam.changed = 0;
1032         }
1033
1034         // clear fps counters and stuff
1035         memset32_uncached((int *)psp_video_get_active_fb() + 512*264*2/4, 0, 512*8*2/4);
1036 }
1037
1038 void emu_HandleResume(void)
1039 {
1040         if (!(PicoAHW & PAHW_MCD)) return;
1041
1042         // reopen first CD track
1043         if (Pico_mcd->TOC.Tracks[0].F != NULL)
1044         {
1045                 char *fname = rom_fname_reload;
1046                 int len = strlen(rom_fname_reload);
1047                 cue_data_t *cue_data = NULL;
1048
1049                 if (len > 4 && strcasecmp(fname + len - 4,  ".cue") == 0)
1050                 {
1051                         cue_data = cue_parse(rom_fname_reload);
1052                         if (cue_data != NULL)
1053                                 fname = cue_data->tracks[1].fname;
1054                 }
1055
1056                 lprintf("emu_HandleResume: reopen %s\n", fname);
1057                 pm_close(Pico_mcd->TOC.Tracks[0].F);
1058                 Pico_mcd->TOC.Tracks[0].F = pm_open(fname);
1059                 lprintf("reopen %s\n", Pico_mcd->TOC.Tracks[0].F != NULL ? "ok" : "failed");
1060
1061                 if (cue_data != NULL) cue_destroy(cue_data);
1062         }
1063
1064         mp3_reopen_file();
1065
1066         if (!(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1))
1067                 cdda_start_play();
1068 }
1069