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 static unsigned int noticeMsgTime = 0;
  40
  41 #define PICO_PEN_ADJUST_X 4
  42 #define PICO_PEN_ADJUST_Y 2
  43 static int pico_pen_x = 320/2, pico_pen_y = 240/2;
  44
  45 static void sound_init(void);
  46 static void sound_deinit(void);
  47 static void blit2(const char *fps, const char *notice, int lagging_behind);
  48 static void clearArea(int full);
  49
  50 void plat_status_msg(const char *format, ...)
  51 {
  52         va_list vl;
  53
  54         va_start(vl, format);
  55         vsnprintf(noticeMsg, sizeof(noticeMsg), fmt, vl);
  56         va_end(vl);
  57
  58         noticeMsgTime = sceKernelGetSystemTimeLow();
  59 }
  60
  61 int plat_get_root_dir(char *dst, int len)
  62 {
  63         if (len > 0) *dst = 0;
  64         return 0;
  65 }
  66
  67 static void osd_text(int x, const char *text, int is_active, int clear_all)
  68 {
  69         unsigned short *screen = is_active ? psp_video_get_active_fb() : psp_screen;
  70         int len = clear_all ? (480 / 2) : (strlen(text) * 8 / 2);
  71         int *p, h;
  72         void *tmp;
  73         for (h = 0; h < 8; h++) {
  74                 p = (int *) (screen+x+512*(264+h));
  75                 p = (int *) ((int)p & ~3); // align
  76                 memset32_uncached(p, 0, len);
  77         }
  78         if (is_active) { tmp = psp_screen; psp_screen = screen; } // nasty pointer tricks
  79         emu_textOut16(x, 264, text);
  80         if (is_active) psp_screen = tmp;
  81 }
  82
  83 void emu_msg_cb(const char *msg)
  84 {
  85         osd_text(4, msg, 1, 1);
  86         noticeMsgTime = sceKernelGetSystemTimeLow() - 2000000;
  87
  88         /* assumption: emu_msg_cb gets called only when something slow is about to happen */
  89         reset_timing = 1;
  90 }
  91
  92 /* FIXME: move to plat */
  93 void emu_Init(void)
  94 {
  95         sound_init();
  96 }
  97
  98 void emu_Deinit(void)
  99 {
 100         sound_deinit();
 101 }
 102
 103 void pemu_prep_defconfig(void)
 104 {
 105         memset(&defaultConfig, 0, sizeof(defaultConfig));
 106         defaultConfig.EmuOpt    = 0x1d | 0x680; // | <- confirm_save, cd_leds, acc rend
 107         defaultConfig.s_PicoOpt = 0x0f | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX|POPT_ACC_SPRITES;
 108         defaultConfig.s_PsndRate = 22050;
 109         defaultConfig.s_PicoRegion = 0; // auto
 110         defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP
 111         defaultConfig.s_PicoCDBuffers = 64;
 112         defaultConfig.Frameskip = -1; // auto
 113         defaultConfig.CPUclock = 333;
 114         defaultConfig.KeyBinds[ 4] = 1<<0; // SACB RLDU
 115         defaultConfig.KeyBinds[ 6] = 1<<1;
 116         defaultConfig.KeyBinds[ 7] = 1<<2;
 117         defaultConfig.KeyBinds[ 5] = 1<<3;
 118         defaultConfig.KeyBinds[14] = 1<<4;
 119         defaultConfig.KeyBinds[13] = 1<<5;
 120         defaultConfig.KeyBinds[15] = 1<<6;
 121         defaultConfig.KeyBinds[ 3] = 1<<7;
 122         defaultConfig.KeyBinds[12] = 1<<26; // switch rnd
 123         defaultConfig.KeyBinds[ 8] = 1<<27; // save state
 124         defaultConfig.KeyBinds[ 9] = 1<<28; // load state
 125         defaultConfig.KeyBinds[28] = 1<<0; // num "buttons"
 126         defaultConfig.KeyBinds[30] = 1<<1;
 127         defaultConfig.KeyBinds[31] = 1<<2;
 128         defaultConfig.KeyBinds[29] = 1<<3;
 129         defaultConfig.scaling = 1;     // bilinear filtering for psp
 130         defaultConfig.scale = 1.20;    // fullscreen
 131         defaultConfig.hscale40 = 1.25;
 132         defaultConfig.hscale32 = 1.56;
 133         defaultConfig.turbo_rate = 15;
 134 }
 135
 136
 137 extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
 138 extern void amips_clut_6bit(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
 139
 140 static void (*amips_clut_f)(unsigned short *dst, unsigned char *src, unsigned short *pal, int count) = NULL;
 141
 142 struct Vertex
 143 {
 144         short u,v;
 145         short x,y,z;
 146 };
 147
 148 static struct Vertex __attribute__((aligned(4))) g_vertices[2];
 149 static unsigned short __attribute__((aligned(16))) localPal[0x100];
 150 static int dynamic_palette = 0, need_pal_upload = 0, blit_16bit_mode = 0;
 151 static int fbimg_offs = 0;
 152
 153 static void set_scaling_params(void)
 154 {
 155         int src_width, fbimg_width, fbimg_height, fbimg_xoffs, fbimg_yoffs, border_hack = 0;
 156         g_vertices[0].x = g_vertices[0].y =
 157         g_vertices[0].z = g_vertices[1].z = 0;
 158
 159         fbimg_height = (int)(240.0 * currentConfig.scale + 0.5);
 160         if (Pico.video.reg[12] & 1) {
 161                 fbimg_width = (int)(320.0 * currentConfig.scale * currentConfig.hscale40 + 0.5);
 162                 src_width = 320;
 163         } else {
 164                 fbimg_width = (int)(256.0 * currentConfig.scale * currentConfig.hscale32 + 0.5);
 165                 src_width = 256;
 166         }
 167
 168         if (fbimg_width  & 1) fbimg_width++;  // make even
 169         if (fbimg_height & 1) fbimg_height++;
 170
 171         if (fbimg_width >= 480) {
 172                 g_vertices[0].u = (fbimg_width-480)/2;
 173                 g_vertices[1].u = src_width - (fbimg_width-480)/2 - 1;
 174                 fbimg_width = 480;
 175                 fbimg_xoffs = 0;
 176         } else {
 177                 g_vertices[0].u = 0;
 178                 g_vertices[1].u = src_width;
 179                 fbimg_xoffs = 240 - fbimg_width/2;
 180         }
 181         if (fbimg_width > 320 && fbimg_width <= 480) border_hack = 1;
 182
 183         if (fbimg_height >= 272) {
 184                 g_vertices[0].v = (fbimg_height-272)/2;
 185                 g_vertices[1].v = 240 - (fbimg_height-272)/2;
 186                 fbimg_height = 272;
 187                 fbimg_yoffs = 0;
 188         } else {
 189                 g_vertices[0].v = 0;
 190                 g_vertices[1].v = 240;
 191                 fbimg_yoffs = 136 - fbimg_height/2;
 192         }
 193
 194         g_vertices[1].x = fbimg_width;
 195         g_vertices[1].y = fbimg_height;
 196         if (fbimg_xoffs < 0) fbimg_xoffs = 0;
 197         if (fbimg_yoffs < 0) fbimg_yoffs = 0;
 198         if (border_hack) {
 199                 g_vertices[0].u++;
 200                 g_vertices[0].x++;
 201                 g_vertices[1].u--;
 202                 g_vertices[1].x--;
 203         }
 204         fbimg_offs = (fbimg_yoffs*512 + fbimg_xoffs) * 2; // dst is always 16bit
 205
 206         /*
 207         lprintf("set_scaling_params:\n");
 208         lprintf("offs: %i, %i\n", fbimg_xoffs, fbimg_yoffs);
 209         lprintf("xy0, xy1: %i, %i; %i, %i\n", g_vertices[0].x, g_vertices[0].y, g_vertices[1].x, g_vertices[1].y);
 210         lprintf("uv0, uv1: %i, %i; %i, %i\n", g_vertices[0].u, g_vertices[0].v, g_vertices[1].u, g_vertices[1].v);
 211         */
 212 }
 213
 214 static void do_pal_update(int allow_sh, int allow_as)
 215 {
 216         unsigned int *dpal=(void *)localPal;
 217         int i;
 218
 219         //for (i = 0x3f/2; i >= 0; i--)
 220         //      dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
 221         do_pal_convert(localPal, Pico.cram, currentConfig.gamma, currentConfig.gamma2);
 222
 223         Pico.m.dirtyPal = 0;
 224         need_pal_upload = 1;
 225
 226         if (allow_sh && (Pico.video.reg[0xC]&8)) // shadow/hilight?
 227         {
 228                 // shadowed pixels
 229                 for (i = 0x3f/2; i >= 0; i--)
 230                         dpal[0x20|i] = dpal[0x60|i] = (dpal[i]>>1)&0x7bcf7bcf;
 231                 // hilighted pixels
 232                 for (i = 0x3f; i >= 0; i--) {
 233                         int t=localPal[i]&0xf79e;t+=0x4208;
 234                         if (t&0x20) t|=0x1e;
 235                         if (t&0x800) t|=0x780;
 236                         if (t&0x10000) t|=0xf000;
 237                         t&=0xf79e;
 238                         localPal[0x80|i]=(unsigned short)t;
 239                 }
 240                 localPal[0xe0] = 0;
 241                 localPal[0xf0] = 0x001f;
 242         }
 243         else if (allow_as && (rendstatus & PDRAW_SPR_LO_ON_HI))
 244         {
 245                 memcpy32((int *)dpal+0x80/2, (void *)localPal, 0x40*2/4);
 246         }
 247 }
 248
 249 static void do_slowmode_lines(int line_to)
 250 {
 251         int line = 0, line_len = (Pico.video.reg[12]&1) ? 320 : 256;
 252         unsigned short *dst = (unsigned short *)VRAM_STUFF + 512*240/2;
 253         unsigned char  *src = (unsigned char  *)VRAM_CACHED_STUFF + 16;
 254         if (!(Pico.video.reg[1]&8)) { line = 8; dst += 512*8; src += 512*8; }
 255
 256         for (; line < line_to; line++, dst+=512, src+=512)
 257                 amips_clut_f(dst, src, localPal, line_len);
 258 }
 259
 260 static void EmuScanPrepare(void)
 261 {
 262         HighCol = (unsigned char *)VRAM_CACHED_STUFF + 8;
 263         if (!(Pico.video.reg[1]&8)) HighCol += 8*512;
 264
 265         if (dynamic_palette > 0)
 266                 dynamic_palette--;
 267
 268         if (Pico.m.dirtyPal)
 269                 do_pal_update(1, 1);
 270         if ((rendstatus & PDRAW_SPR_LO_ON_HI) && !(Pico.video.reg[0xC]&8))
 271              amips_clut_f = amips_clut_6bit;
 272         else amips_clut_f = amips_clut;
 273 }
 274
 275 static int EmuScanSlowBegin(unsigned int num)
 276 {
 277         if (!(Pico.video.reg[1]&8)) num += 8;
 278
 279         if (!dynamic_palette)
 280                 HighCol = (unsigned char *)VRAM_CACHED_STUFF + num * 512 + 8;
 281
 282         return 0;
 283 }
 284
 285 static int EmuScanSlowEnd(unsigned int num)
 286 {
 287         if (!(Pico.video.reg[1]&8)) num += 8;
 288
 289         if (Pico.m.dirtyPal) {
 290                 if (!dynamic_palette) {
 291                         do_slowmode_lines(num);
 292                         dynamic_palette = 3; // last for 2 more frames
 293                 }
 294                 do_pal_update(1, 1);
 295         }
 296
 297         if (dynamic_palette) {
 298                 int line_len = (Pico.video.reg[12]&1) ? 320 : 256;
 299                 void *dst = (char *)VRAM_STUFF + 512*240 + 512*2*num;
 300                 amips_clut_f(dst, HighCol + 8, localPal, line_len);
 301         }
 302
 303         return 0;
 304 }
 305
 306 static void blitscreen_clut(void)
 307 {
 308         int offs = fbimg_offs;
 309         offs += (psp_screen == VRAM_FB0) ? VRAMOFFS_FB0 : VRAMOFFS_FB1;
 310
 311         sceGuSync(0,0); // sync with prev
 312         sceGuStart(GU_DIRECT, guCmdList);
 313         sceGuDrawBuffer(GU_PSM_5650, (void *)offs, 512); // point to back buffer
 314
 315         if (dynamic_palette)
 316         {
 317                 if (!blit_16bit_mode) { // the current mode is not 16bit
 318                         sceGuTexMode(GU_PSM_5650, 0, 0, 0);
 319                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 512*240);
 320
 321                         blit_16bit_mode = 1;
 322                 }
 323         }
 324         else
 325         {
 326                 if (blit_16bit_mode) {
 327                         sceGuClutMode(GU_PSM_5650,0,0xff,0);
 328                         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
 329                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
 330                         blit_16bit_mode = 0;
 331                 }
 332
 333                 if ((PicoOpt&0x10) && Pico.m.dirtyPal)
 334                         do_pal_update(0, 0);
 335
 336                 sceKernelDcacheWritebackAll();
 337
 338                 if (need_pal_upload) {
 339                         need_pal_upload = 0;
 340                         sceGuClutLoad((256/8), localPal); // upload 32*8 entries (256)
 341                 }
 342         }
 343
 344 #if 1
 345         if (g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x)
 346         {
 347                 struct Vertex* vertices;
 348                 int x;
 349
 350                 #define SLICE_WIDTH 32
 351                 for (x = 0; x < g_vertices[1].x; x += SLICE_WIDTH)
 352                 {
 353                         // render sprite
 354                         vertices = (struct Vertex*)sceGuGetMemory(2 * sizeof(struct Vertex));
 355                         memcpy(vertices, g_vertices, 2 * sizeof(struct Vertex));
 356                         vertices[0].u = vertices[0].x = x;
 357                         vertices[1].u = vertices[1].x = x + SLICE_WIDTH;
 358                         sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,vertices);
 359                 }
 360                 // lprintf("listlen: %iB\n", sceGuCheckList()); // ~480 only
 361         }
 362         else
 363 #endif
 364                 sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,g_vertices);
 365
 366         sceGuFinish();
 367 }
 368
 369
 370 static void cd_leds(void)
 371 {
 372         unsigned int reg, col_g, col_r, *p;
 373
 374         reg = Pico_mcd->s68k_regs[0];
 375
 376         p = (unsigned int *)((short *)psp_screen + 512*2+4+2);
 377         col_g = (reg & 2) ? 0x06000600 : 0;
 378         col_r = (reg & 1) ? 0x00180018 : 0;
 379         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
 380         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
 381         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
 382 }
 383
 384 static void draw_pico_ptr(void)
 385 {
 386         unsigned char *p = (unsigned char *)VRAM_STUFF + 16;
 387
 388         // only if pen enabled and for 8bit mode
 389         if (pico_inp_mode == 0 || blit_16bit_mode) return;
 390
 391         p += 512 * (pico_pen_y + PICO_PEN_ADJUST_Y);
 392         p += pico_pen_x + PICO_PEN_ADJUST_X;
 393         p[  -1] = 0xe0; p[   0] = 0xf0; p[   1] = 0xe0;
 394         p[ 511] = 0xf0; p[ 512] = 0xf0; p[ 513] = 0xf0;
 395         p[1023] = 0xe0; p[1024] = 0xf0; p[1025] = 0xe0;
 396 }
 397
 398
 399 #if 0
 400 static void dbg_text(void)
 401 {
 402         int *p, h, len;
 403         char text[128];
 404
 405         sprintf(text, "sl: %i, 16b: %i", g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x, blit_16bit_mode);
 406         len = strlen(text) * 8 / 2;
 407         for (h = 0; h < 8; h++) {
 408                 p = (int *) ((unsigned short *) psp_screen+2+512*(256+h));
 409                 p = (int *) ((int)p & ~3); // align
 410                 memset32_uncached(p, 0, len);
 411         }
 412         emu_textOut16(2, 256, text);
 413 }
 414 #endif
 415
 416 /* called after rendering is done, but frame emulation is not finished */
 417 void blit1(void)
 418 {
 419         if (PicoOpt&0x10)
 420         {
 421                 int i;
 422                 unsigned char *pd;
 423                 // clear top and bottom trash
 424                 for (pd = PicoDraw2FB+8, i = 8; i > 0; i--, pd += 512)
 425                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
 426                 for (pd = PicoDraw2FB+512*232+8, i = 8; i > 0; i--, pd += 512)
 427                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
 428         }
 429
 430         if (PicoAHW & PAHW_PICO)
 431                 draw_pico_ptr();
 432
 433         blitscreen_clut();
 434 }
 435
 436
 437 static void blit2(const char *fps, const char *notice, int lagging_behind)
 438 {
 439         int vsync = 0, emu_opt = currentConfig.EmuOpt;
 440
 441         if (notice || (emu_opt & 2)) {
 442                 if (notice)      osd_text(4, notice, 0, 0);
 443                 if (emu_opt & 2) osd_text(OSD_FPS_X, fps, 0, 0);
 444         }
 445
 446         //dbg_text();
 447
 448         if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))
 449                 cd_leds();
 450
 451         if (currentConfig.EmuOpt & 0x2000) { // want vsync
 452                 if (!(currentConfig.EmuOpt & 0x10000) || !lagging_behind) vsync = 1;
 453         }
 454
 455         psp_video_flip(vsync);
 456 }
 457
 458 // clears whole screen or just the notice area (in all buffers)
 459 static void clearArea(int full)
 460 {
 461         if (full) {
 462                 memset32_uncached(psp_screen, 0, 512*272*2/4);
 463                 psp_video_flip(0);
 464                 memset32_uncached(psp_screen, 0, 512*272*2/4);
 465                 memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*240/4);
 466                 memset32((int *)VRAM_CACHED_STUFF+512*240/4, 0, 512*240*2/4);
 467         } else {
 468                 void *fb = psp_video_get_active_fb();
 469                 memset32_uncached((int *)((char *)psp_screen + 512*264*2), 0, 512*8*2/4);
 470                 memset32_uncached((int *)((char *)fb         + 512*264*2), 0, 512*8*2/4);
 471         }
 472 }
 473
 474 static void vidResetMode(void)
 475 {
 476         // setup GU
 477         sceGuSync(0,0); // sync with prev
 478         sceGuStart(GU_DIRECT, guCmdList);
 479
 480         sceGuClutMode(GU_PSM_5650,0,0xff,0);
 481         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
 482         sceGuTexFunc(GU_TFX_REPLACE,GU_TCC_RGB);
 483         if (currentConfig.scaling)
 484              sceGuTexFilter(GU_LINEAR, GU_LINEAR);
 485         else sceGuTexFilter(GU_NEAREST, GU_NEAREST);
 486         sceGuTexScale(1.0f,1.0f);
 487         sceGuTexOffset(0.0f,0.0f);
 488
 489         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
 490
 491         // slow rend.
 492         PicoDrawSetColorFormat(-1);
 493         PicoScanBegin = EmuScanSlowBegin;
 494         PicoScanEnd = EmuScanSlowEnd;
 495
 496         localPal[0xe0] = 0;
 497         localPal[0xf0] = 0x001f;
 498         Pico.m.dirtyPal = 1;
 499         blit_16bit_mode = dynamic_palette = 0;
 500
 501         sceGuFinish();
 502         set_scaling_params();
 503         sceGuSync(0,0);
 504 }
 505
 506 void plat_debug_cat(char *str)
 507 {
 508         strcat(str, blit_16bit_mode ? "soft clut\n" : "hard clut\n");
 509 }
 510
 511
 512 /* sound stuff */
 513 #define SOUND_BLOCK_SIZE_NTSC (1470*2) // 1024 // 1152
 514 #define SOUND_BLOCK_SIZE_PAL  (1764*2)
 515 #define SOUND_BLOCK_COUNT    8
 516
 517 static short __attribute__((aligned(4))) sndBuffer[SOUND_BLOCK_SIZE_PAL*SOUND_BLOCK_COUNT + 44100/50*2];
 518 static short *snd_playptr = NULL, *sndBuffer_endptr = NULL;
 519 static int samples_made = 0, samples_done = 0, samples_block = 0;
 520 static int sound_thread_exit = 0;
 521 static SceUID sound_sem = -1;
 522
 523 static void writeSound(int len);
 524
 525 static int sound_thread(SceSize args, void *argp)
 526 {
 527         int ret = 0;
 528
 529         lprintf("sthr: started, priority %i\n", sceKernelGetThreadCurrentPriority());
 530
 531         while (!sound_thread_exit)
 532         {
 533                 if (samples_made - samples_done < samples_block) {
 534                         // wait for data (use at least 2 blocks)
 535                         //lprintf("sthr: wait... (%i)\n", samples_made - samples_done);
 536                         while (samples_made - samples_done <= samples_block*2 && !sound_thread_exit)
 537                                 ret = sceKernelWaitSema(sound_sem, 1, 0);
 538                         if (ret < 0) lprintf("sthr: sceKernelWaitSema: %i\n", ret);
 539                         continue;
 540                 }
 541
 542                 // lprintf("sthr: got data: %i\n", samples_made - samples_done);
 543
 544                 ret = sceAudio_E0727056(PSP_AUDIO_VOLUME_MAX, snd_playptr);
 545
 546                 samples_done += samples_block;
 547                 snd_playptr  += samples_block;
 548                 if (snd_playptr >= sndBuffer_endptr)
 549                         snd_playptr = sndBuffer;
 550                 // 1.5 kernel returns 0, newer ones return # of samples queued
 551                 if (ret < 0)
 552                         lprintf("sthr: sceAudio_E0727056: %08x; pos %i/%i\n", ret, samples_done, samples_made);
 553
 554                 // shouln't happen, but just in case
 555                 if (samples_made - samples_done >= samples_block*3) {
 556                         //lprintf("sthr: block skip (%i)\n", samples_made - samples_done);
 557                         samples_done += samples_block; // skip
 558                         snd_playptr  += samples_block;
 559                 }
 560
 561         }
 562
 563         lprintf("sthr: exit\n");
 564         sceKernelExitDeleteThread(0);
 565         return 0;
 566 }
 567
 568 static void sound_init(void)
 569 {
 570         SceUID thid;
 571         int ret;
 572
 573         sound_sem = sceKernelCreateSema("sndsem", 0, 0, 1, NULL);
 574         if (sound_sem < 0) lprintf("sceKernelCreateSema() failed: %i\n", sound_sem);
 575
 576         samples_made = samples_done = 0;
 577         samples_block = SOUND_BLOCK_SIZE_NTSC; // make sure it goes to sema
 578         sound_thread_exit = 0;
 579         thid = sceKernelCreateThread("sndthread", sound_thread, 0x12, 0x10000, 0, NULL);
 580         if (thid >= 0)
 581         {
 582                 ret = sceKernelStartThread(thid, 0, 0);
 583                 if (ret < 0) lprintf("sound_init: sceKernelStartThread returned %08x\n", ret);
 584         }
 585         else
 586                 lprintf("sceKernelCreateThread failed: %i\n", thid);
 587 }
 588
 589 void pemu_sound_start(void)
 590 {
 591         static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
 592         int ret, stereo;
 593
 594         samples_made = samples_done = 0;
 595
 596         if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
 597                 PsndRerate(Pico.m.frame_count ? 1 : 0);
 598         }
 599         stereo=(PicoOpt&8)>>3;
 600
 601         samples_block = Pico.m.pal ? SOUND_BLOCK_SIZE_PAL : SOUND_BLOCK_SIZE_NTSC;
 602         if (PsndRate <= 22050) samples_block /= 2;
 603         sndBuffer_endptr = &sndBuffer[samples_block*SOUND_BLOCK_COUNT];
 604
 605         lprintf("starting audio: %i, len: %i, stereo: %i, pal: %i, block samples: %i\n",
 606                         PsndRate, PsndLen, stereo, Pico.m.pal, samples_block);
 607
 608         // while (sceAudioOutput2GetRestSample() > 0) psp_msleep(100);
 609         // sceAudio_5C37C0AE();
 610         ret = sceAudio_38553111(samples_block/2, PsndRate, 2); // seems to not need that stupid 64byte alignment
 611         if (ret < 0) {
 612                 lprintf("sceAudio_38553111() failed: %i\n", ret);
 613                 plat_status_msg("sound init failed (%i), snd disabled", ret);
 614                 currentConfig.EmuOpt &= ~EOPT_EN_SOUND;
 615         } else {
 616                 PicoWriteSound = writeSound;
 617                 memset32((int *)(void *)sndBuffer, 0, sizeof(sndBuffer)/4);
 618                 snd_playptr = sndBuffer_endptr - samples_block;
 619                 samples_made = samples_block; // send 1 empty block first..
 620                 PsndOut = sndBuffer;
 621                 PsndRate_old = PsndRate;
 622                 PicoOpt_old  = PicoOpt;
 623                 pal_old = Pico.m.pal;
 624         }
 625 }
 626
 627 void pemu_sound_stop(void)
 628 {
 629         int i;
 630         if (samples_done == 0)
 631         {
 632                 // if no data is written between sceAudio_38553111 and sceAudio_5C37C0AE calls,
 633                 // we get a deadlock on next sceAudio_38553111 call
 634                 // so this is yet another workaround:
 635                 memset32((int *)(void *)sndBuffer, 0, samples_block*4/4);
 636                 samples_made = samples_block * 3;
 637                 sceKernelSignalSema(sound_sem, 1);
 638         }
 639         sceKernelDelayThread(100*1000);
 640         samples_made = samples_done = 0;
 641         for (i = 0; sceAudioOutput2GetRestSample() > 0 && i < 16; i++)
 642                 psp_msleep(100);
 643         sceAudio_5C37C0AE();
 644 }
 645
 646 /* wait until we can write more sound */
 647 void pemu_sound_wait(void)
 648 {
 649         // TODO: test this
 650         while (!sound_thread_exit && samples_made - samples_done > samples_block * 4)
 651                 psp_msleep(10);
 652 }
 653
 654 static void sound_deinit(void)
 655 {
 656         sound_thread_exit = 1;
 657         sceKernelSignalSema(sound_sem, 1);
 658         sceKernelDeleteSema(sound_sem);
 659         sound_sem = -1;
 660 }
 661
 662 static void writeSound(int len)
 663 {
 664         int ret;
 665         if (PicoOpt&8) len<<=1;
 666
 667         PsndOut += len;
 668         /*if (PsndOut > sndBuffer_endptr) {
 669                 memcpy32((int *)(void *)sndBuffer, (int *)endptr, (PsndOut - endptr + 1) / 2);
 670                 PsndOut = &sndBuffer[PsndOut - endptr];
 671                 lprintf("mov\n");
 672         }
 673         else*/
 674         if (PsndOut > sndBuffer_endptr) lprintf("snd oflow %i!\n", PsndOut - sndBuffer_endptr);
 675         if (PsndOut >= sndBuffer_endptr)
 676                 PsndOut = sndBuffer;
 677
 678         // signal the snd thread
 679         samples_made += len;
 680         if (samples_made - samples_done > samples_block*2) {
 681                 // lprintf("signal, %i/%i\n", samples_done, samples_made);
 682                 ret = sceKernelSignalSema(sound_sem, 1);
 683                 //if (ret < 0) lprintf("snd signal ret %08x\n", ret);
 684         }
 685 }
 686
 687
 688 static void SkipFrame(void)
 689 {
 690         PicoSkipFrame=1;
 691         PicoFrame();
 692         PicoSkipFrame=0;
 693 }
 694
 695 void pemu_forced_frame(int opts)
 696 {
 697         int po_old = PicoOpt;
 698         int eo_old = currentConfig.EmuOpt;
 699
 700         PicoOpt &= ~0x10;
 701         PicoOpt |= opts|POPT_ACC_SPRITES;
 702         currentConfig.EmuOpt |= 0x80;
 703
 704         vidResetMode();
 705         memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*8/4); // borders
 706         memset32((int *)VRAM_CACHED_STUFF + 512*232/4, 0xe0e0e0e0, 512*8/4);
 707         memset32_uncached((int *)psp_screen + 512*264*2/4, 0, 512*8*2/4);
 708
 709         PicoDrawSetColorFormat(-1);
 710         PicoScanBegin = EmuScanSlowBegin;
 711         PicoScanEnd = EmuScanSlowEnd;
 712         EmuScanPrepare();
 713         PicoFrameDrawOnly();
 714         blit1();
 715         sceGuSync(0,0);
 716
 717         PicoOpt = po_old;
 718         currentConfig.EmuOpt = eo_old;
 719 }
 720
 721
 722 static void RunEventsPico(unsigned int events, unsigned int keys)
 723 {
 724         emu_RunEventsPico(events);
 725
 726         if (pico_inp_mode != 0)
 727         {
 728                 PicoPad[0] &= ~0x0f; // release UDLR
 729                 if (keys & PBTN_UP)   { pico_pen_y--; if (pico_pen_y < 8) pico_pen_y = 8; }
 730                 if (keys & PBTN_DOWN) { pico_pen_y++; if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y; }
 731                 if (keys & PBTN_LEFT) { pico_pen_x--; if (pico_pen_x < 0) pico_pen_x = 0; }
 732                 if (keys & PBTN_RIGHT) {
 733                         int lim = (Pico.video.reg[12]&1) ? 319 : 255;
 734                         pico_pen_x++;
 735                         if (pico_pen_x > lim-PICO_PEN_ADJUST_X)
 736                                 pico_pen_x = lim-PICO_PEN_ADJUST_X;
 737                 }
 738                 PicoPicohw.pen_pos[0] = pico_pen_x;
 739                 if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;
 740                 PicoPicohw.pen_pos[0] += 0x3c;
 741                 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);
 742         }
 743 }
 744
 745 static void RunEvents(unsigned int which)
 746 {
 747         if (which & 0x1800) // save or load (but not both)
 748         {
 749                 int do_it = 1;
 750
 751                 if ( emu_check_save_file(state_slot) &&
 752                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load
 753                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) // save
 754                 {
 755                         int keys;
 756                         sceGuSync(0,0);
 757                         blit2("", (which & 0x1000) ? "LOAD STATE? (X=yes, O=no)" : "OVERWRITE SAVE? (X=yes, O=no)", 0);
 758                         while( !((keys = psp_pad_read(1)) & (PBTN_X|PBTN_CIRCLE)) )
 759                                 psp_msleep(50);
 760                         if (keys & PBTN_CIRCLE) do_it = 0;
 761                         while(  ((keys = psp_pad_read(1)) & (PBTN_X|PBTN_CIRCLE)) ) // wait for release
 762                                 psp_msleep(50);
 763                         clearArea(0);
 764                 }
 765
 766                 if (do_it)
 767                 {
 768                         osd_text(4, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME", 1, 0);
 769                         PicoStateProgressCB = emu_msg_cb;
 770                         emu_save_load_game((which & 0x1000) >> 12, 0);
 771                         PicoStateProgressCB = NULL;
 772                         psp_msleep(0);
 773                 }
 774
 775                 reset_timing = 1;
 776         }
 777         if (which & 0x0400) // switch renderer
 778         {
 779                 if (PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |=  0x80; }
 780                 else              { PicoOpt|= 0x10; currentConfig.EmuOpt &= ~0x80; }
 781
 782                 vidResetMode();
 783
 784                 if (PicoOpt & POPT_ALT_RENDERER)
 785                         plat_status_msg("fast renderer");
 786                 else if (currentConfig.EmuOpt&0x80)
 787                         plat_status_msg("accurate renderer");
 788         }
 789         if (which & 0x0300)
 790         {
 791                 if(which&0x0200) {
 792                         state_slot -= 1;
 793                         if(state_slot < 0) state_slot = 9;
 794                 } else {
 795                         state_slot += 1;
 796                         if(state_slot > 9) state_slot = 0;
 797                 }
 798                 plat_status_msg("SAVE SLOT %i [%s]", state_slot,
 799                         emu_check_save_file(state_slot) ? "USED" : "FREE");
 800         }
 801 }
 802
 803 static void updateKeys(void)
 804 {
 805         unsigned int keys, allActions[2] = { 0, 0 }, events;
 806         static unsigned int prevEvents = 0;
 807         int i;
 808
 809         /* FIXME: port to input fw, merge with emu.c:emu_update_input() */
 810         keys = psp_pad_read(0);
 811         if (keys & PSP_CTRL_HOME)
 812                 sceDisplayWaitVblankStart();
 813
 814         if (keys & PBTN_SELECT)
 815                 engineState = PGS_Menu;
 816
 817         keys &= CONFIGURABLE_KEYS;
 818
 819         PicoPad[0] = allActions[0] & 0xfff;
 820         PicoPad[1] = allActions[1] & 0xfff;
 821
 822         if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);
 823         if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);
 824
 825         events = (allActions[0] | allActions[1]) >> 16;
 826
 827         if ((events ^ prevEvents) & 0x40) {
 828                 emu_set_fastforward(events & 0x40);
 829                 reset_timing = 1;
 830         }
 831
 832         events &= ~prevEvents;
 833
 834         if (PicoAHW == PAHW_PICO)
 835                 RunEventsPico(events, keys);
 836         if (events) RunEvents(events);
 837         if (movie_data) emu_updateMovie();
 838
 839         prevEvents = (allActions[0] | allActions[1]) >> 16;
 840 }
 841
 842
 843 static void simpleWait(unsigned int until)
 844 {
 845         unsigned int tval;
 846         int diff;
 847
 848         tval = sceKernelGetSystemTimeLow();
 849         diff = (int)until - (int)tval;
 850         if (diff >= 512 && diff < 100*1024)
 851                 sceKernelDelayThread(diff);
 852 }
 853
 854 void pemu_loop(void)
 855 {
 856         static int mp3_init_done = 0;
 857         char fpsbuff[24]; // fps count c string
 858         unsigned int tval, tval_thissec = 0; // timing
 859         int target_fps, target_frametime, lim_time, tval_diff, i, oldmodes = 0;
 860         int pframes_done, pframes_shown; // "period" frames, used for sync
 861         int  frames_done,  frames_shown, tval_fpsc = 0; // actual frames
 862         char *notice = NULL;
 863
 864         lprintf("entered emu_Loop()\n");
 865
 866         fpsbuff[0] = 0;
 867
 868         if (currentConfig.CPUclock != psp_get_cpu_clock()) {
 869                 lprintf("setting cpu clock to %iMHz... ", currentConfig.CPUclock);
 870                 i = psp_set_cpu_clock(currentConfig.CPUclock);
 871                 lprintf(i ? "failed\n" : "done\n");
 872                 currentConfig.CPUclock = psp_get_cpu_clock();
 873         }
 874
 875         // make sure we are in correct mode
 876         vidResetMode();
 877         clearArea(1);
 878         Pico.m.dirtyPal = 1;
 879         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
 880
 881         // pal/ntsc might have changed, reset related stuff
 882         target_fps = Pico.m.pal ? 50 : 60;
 883         target_frametime = Pico.m.pal ? (1000000<<8)/50 : (1000000<<8)/60+1;
 884         reset_timing = 1;
 885
 886         if (PicoAHW & PAHW_MCD) {
 887                 // prepare CD buffer
 888                 PicoCDBufferInit();
 889                 // mp3...
 890                 if (!mp3_init_done) {
 891                         i = mp3_init();
 892                         mp3_init_done = 1;
 893                         if (i) { engineState = PGS_Menu; return; }
 894                 }
 895         }
 896
 897         // prepare sound stuff
 898         PsndOut = NULL;
 899         if (currentConfig.EmuOpt & EOPT_EN_SOUND)
 900         {
 901                 pemu_sound_start();
 902         }
 903
 904         sceDisplayWaitVblankStart();
 905         pframes_shown = pframes_done =
 906          frames_shown =  frames_done = 0;
 907
 908         tval_fpsc = sceKernelGetSystemTimeLow();
 909
 910         // loop?
 911         while (engineState == PGS_Running)
 912         {
 913                 int modes;
 914
 915                 tval = sceKernelGetSystemTimeLow();
 916                 if (reset_timing || tval < tval_fpsc) {
 917                         //stdbg("timing reset");
 918                         reset_timing = 0;
 919                         tval_thissec = tval;
 920                         pframes_shown = pframes_done = 0;
 921                 }
 922
 923                 // show notice message?
 924                 if (noticeMsgTime) {
 925                         static int noticeMsgSum;
 926                         if (tval - noticeMsgTime > 2000000) { // > 2.0 sec
 927                                 noticeMsgTime = 0;
 928                                 clearArea(0);
 929                                 notice = 0;
 930                         } else {
 931                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
 932                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
 933                                 notice = noticeMsg;
 934                         }
 935                 }
 936
 937                 // check for mode changes
 938                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
 939                 if (modes != oldmodes) {
 940                         oldmodes = modes;
 941                         clearArea(1);
 942                         set_scaling_params();
 943                 }
 944
 945                 // second passed?
 946                 if (tval - tval_fpsc >= 1000000)
 947                 {
 948                         if (currentConfig.EmuOpt & 2)
 949                                 sprintf(fpsbuff, "%02i/%02i  ", frames_shown, frames_done);
 950                         frames_done = frames_shown = 0;
 951                         tval_fpsc += 1000000;
 952                 }
 953
 954                 if (tval - tval_thissec >= 1000000)
 955                 {
 956                         // missing 1 frame?
 957                         if (currentConfig.Frameskip < 0 && pframes_done < target_fps) {
 958                                 SkipFrame(); pframes_done++; frames_done++;
 959                         }
 960
 961                         tval_thissec += 1000000;
 962
 963                         if (currentConfig.Frameskip < 0) {
 964                                 pframes_done  -= target_fps; if (pframes_done  < 0) pframes_done  = 0;
 965                                 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;
 966                                 if (pframes_shown > pframes_done) pframes_shown = pframes_done;
 967                         } else {
 968                                 pframes_done = pframes_shown = 0;
 969                         }
 970                 }
 971 #ifdef PFRAMES
 972                 sprintf(fpsbuff, "%i", Pico.m.frame_count);
 973 #endif
 974
 975                 lim_time = (pframes_done+1) * target_frametime;
 976                 if (currentConfig.Frameskip >= 0) // frameskip enabled
 977                 {
 978                         for (i = 0; i < currentConfig.Frameskip; i++) {
 979                                 updateKeys();
 980                                 SkipFrame(); pframes_done++; frames_done++;
 981                                 if (!(currentConfig.EmuOpt&0x40000)) { // do framelimitting if needed
 982                                         int tval_diff;
 983                                         tval = sceKernelGetSystemTimeLow();
 984                                         tval_diff = (int)(tval - tval_thissec) << 8;
 985                                         if (tval_diff < lim_time) // we are too fast
 986                                                 simpleWait(tval + ((lim_time - tval_diff)>>8));
 987                                 }
 988                                 lim_time += target_frametime;
 989                         }
 990                 }
 991                 else // auto frameskip
 992                 {
 993                         int tval_diff;
 994                         tval = sceKernelGetSystemTimeLow();
 995                         tval_diff = (int)(tval - tval_thissec) << 8;
 996                         if (tval_diff > lim_time && (pframes_done/16 < pframes_shown))
 997                         {
 998                                 // no time left for this frame - skip
 999                                 if (tval_diff - lim_time >= (300000<<8)) {
1000                                         reset_timing = 1;
1001                                         continue;
1002                                 }
1003                                 updateKeys();
1004                                 SkipFrame(); pframes_done++; frames_done++;
1005                                 continue;
1006                         }
1007                 }
1008
1009                 updateKeys();
1010
1011                 if (!(PicoOpt&0x10))
1012                         EmuScanPrepare();
1013
1014                 PicoFrame();
1015
1016                 sceGuSync(0,0);
1017
1018                 // check time
1019                 tval = sceKernelGetSystemTimeLow();
1020                 tval_diff = (int)(tval - tval_thissec) << 8;
1021
1022                 blit2(fpsbuff, notice, tval_diff > lim_time);
1023
1024                 if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300000<<8)) { // slowdown detection
1025                         reset_timing = 1;
1026                 }
1027                 else if (!(currentConfig.EmuOpt&0x40000) || currentConfig.Frameskip < 0)
1028                 {
1029                         // sleep if we are still too fast
1030                         if (tval_diff < lim_time)
1031                         {
1032                                 // we are too fast
1033                                 simpleWait(tval + ((lim_time - tval_diff) >> 8));
1034                         }
1035                 }
1036
1037                 pframes_done++; pframes_shown++;
1038                  frames_done++;  frames_shown++;
1039         }
1040
1041
1042         emu_set_fastforward(0);
1043
1044         if (PicoAHW & PAHW_MCD) PicoCDBufferFree();
1045
1046         if (PsndOut != NULL) {
1047                 pemu_sound_stop();
1048                 PsndOut = NULL;
1049         }
1050
1051         // save SRAM
1052         if ((currentConfig.EmuOpt & 1) && SRam.changed) {
1053                 emu_msg_cb("Writing SRAM/BRAM..");
1054                 emu_save_load_game(0, 1);
1055                 SRam.changed = 0;
1056         }
1057
1058         // clear fps counters and stuff
1059         memset32_uncached((int *)psp_video_get_active_fb() + 512*264*2/4, 0, 512*8*2/4);
1060 }
1061
1062 void emu_HandleResume(void)
1063 {
1064         if (!(PicoAHW & PAHW_MCD)) return;
1065
1066         // reopen first CD track
1067         if (Pico_mcd->TOC.Tracks[0].F != NULL)
1068         {
1069                 char *fname = rom_fname_reload;
1070                 int len = strlen(rom_fname_reload);
1071                 cue_data_t *cue_data = NULL;
1072
1073                 if (len > 4 && strcasecmp(fname + len - 4,  ".cue") == 0)
1074                 {
1075                         cue_data = cue_parse(rom_fname_reload);
1076                         if (cue_data != NULL)
1077                                 fname = cue_data->tracks[1].fname;
1078                 }
1079
1080                 lprintf("emu_HandleResume: reopen %s\n", fname);
1081                 pm_close(Pico_mcd->TOC.Tracks[0].F);
1082                 Pico_mcd->TOC.Tracks[0].F = pm_open(fname);
1083                 lprintf("reopen %s\n", Pico_mcd->TOC.Tracks[0].F != NULL ? "ok" : "failed");
1084
1085                 if (cue_data != NULL) cue_destroy(cue_data);
1086         }
1087
1088         mp3_reopen_file();
1089
1090         if (!(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1))
1091                 cdda_start_play();
1092 }
1093