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psp gfx scaling/etc stuff
[libpicofe.git] / psp / emu.c
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2951214e 1#include <sys/stat.h>
2#include <sys/types.h>
3#include <sys/syslimits.h> // PATH_MAX
4
703e4c7b 5#include <pspthreadman.h>
2b90fc61 6#include <pspdisplay.h>
db298784 7#include <psputils.h>
8#include <pspgu.h>
703e4c7b 9
10#include "psp.h"
11#include "menu.h"
12#include "emu.h"
13#include "../common/emu.h"
14#include "../common/lprintf.h"
2951214e 15#include "../../Pico/PicoInt.h"
16
703e4c7b 17#ifdef BENCHMARK
6f748c47 18#define OSD_FPS_X 380
703e4c7b 19#else
6f748c47 20#define OSD_FPS_X 420
703e4c7b 21#endif
22
2951214e 23char romFileName[PATH_MAX];
db298784 24unsigned char *PicoDraw2FB = (unsigned char *)VRAM_CACHED_STUFF + 8; // +8 to be able to skip border with 1 quadword..
2951214e 25int engineState;
26
703e4c7b 27static int combo_keys = 0, combo_acts = 0; // keys and actions which need button combos
28static unsigned int noticeMsgTime = 0;
29int reset_timing = 0; // do we need this?
30
31
6f748c47 32static void blit2(const char *fps, const char *notice);
703e4c7b 33static void clearArea(int full);
2951214e 34
35void emu_noticeMsgUpdated(void)
36{
703e4c7b 37 noticeMsgTime = sceKernelGetSystemTimeLow();
2951214e 38}
39
40void emu_getMainDir(char *dst, int len)
41{
703e4c7b 42 if (len > 0) *dst = 0;
2951214e 43}
44
6f748c47 45static void osd_text(int x, const char *text, int is_active)
2951214e 46{
6f748c47 47 unsigned short *screen = is_active ? psp_video_get_active_fb() : psp_screen;
48 int len = strlen(text) * 8 / 2;
49 int *p, h;
50 void *tmp;
51 for (h = 0; h < 8; h++) {
52 p = (int *) (screen+x+512*(264+h));
53 p = (int *) ((int)p & ~3); // align
54 memset32(p, 0, len);
55 }
56 if (is_active) { tmp = psp_screen; psp_screen = screen; } // nasty pointer tricks
57 emu_textOut16(x, 264, text);
58 if (is_active) psp_screen = tmp;
59}
703e4c7b 60
6f748c47 61void emu_msg_cb(const char *msg)
62{
63 osd_text(4, msg, 1);
703e4c7b 64 noticeMsgTime = sceKernelGetSystemTimeLow() - 2000000;
65
66 /* assumption: emu_msg_cb gets called only when something slow is about to happen */
67 reset_timing = 1;
2951214e 68}
69
703e4c7b 70static void emu_msg_tray_open(void)
2951214e 71{
703e4c7b 72 strcpy(noticeMsg, "CD tray opened");
73 noticeMsgTime = sceKernelGetSystemTimeLow();
2951214e 74}
75
703e4c7b 76
2951214e 77void emu_Init(void)
78{
79 // make dirs for saves, cfgs, etc.
80 mkdir("mds", 0777);
81 mkdir("srm", 0777);
82 mkdir("brm", 0777);
83 mkdir("cfg", 0777);
84
85 PicoInit();
703e4c7b 86 PicoMessage = emu_msg_cb;
87 PicoMCDopenTray = emu_msg_tray_open;
88 PicoMCDcloseTray = menu_loop_tray;
2951214e 89}
90
91void emu_Deinit(void)
92{
93 // save SRAM
703e4c7b 94 if ((currentConfig.EmuOpt & 1) && SRam.changed) {
2951214e 95 emu_SaveLoadGame(0, 1);
96 SRam.changed = 0;
97 }
98
99 if (!(currentConfig.EmuOpt & 0x20)) {
100 FILE *f = fopen(PicoConfigFile, "r+b");
101 if (!f) emu_WriteConfig(0);
102 else {
103 // if we already have config, reload it, except last ROM
104 fseek(f, sizeof(currentConfig.lastRomFile), SEEK_SET);
105 fread(&currentConfig.EmuOpt, 1, sizeof(currentConfig) - sizeof(currentConfig.lastRomFile), f);
106 fseek(f, 0, SEEK_SET);
107 fwrite(&currentConfig, 1, sizeof(currentConfig), f);
108 fflush(f);
109 fclose(f);
110 }
111 }
703e4c7b 112
2951214e 113 PicoExit();
114}
115
703e4c7b 116void emu_setDefaultConfig(void)
117{
118 memset(&currentConfig, 0, sizeof(currentConfig));
119 currentConfig.lastRomFile[0] = 0;
120 currentConfig.EmuOpt = 0x1f | 0x680; // | confirm_save, cd_leds, 16bit rend
121 currentConfig.PicoOpt = 0x07 | 0xc00; // | cd_pcm, cd_cdda
122 currentConfig.PsndRate = 22050;
123 currentConfig.PicoRegion = 0; // auto
124 currentConfig.PicoAutoRgnOrder = 0x184; // US, EU, JP
125 currentConfig.Frameskip = -1; // auto
126 currentConfig.volume = 50;
2b90fc61 127 currentConfig.CPUclock = 222;
703e4c7b 128 currentConfig.KeyBinds[ 4] = 1<<0; // SACB RLDU
129 currentConfig.KeyBinds[ 6] = 1<<1;
130 currentConfig.KeyBinds[ 7] = 1<<2;
131 currentConfig.KeyBinds[ 5] = 1<<3;
132 currentConfig.KeyBinds[14] = 1<<4;
133 currentConfig.KeyBinds[13] = 1<<5;
134 currentConfig.KeyBinds[15] = 1<<6;
135 currentConfig.KeyBinds[ 3] = 1<<7;
703e4c7b 136 currentConfig.KeyBinds[ 8] = 1<<27; // save state
137 currentConfig.KeyBinds[ 9] = 1<<28; // load state
138 currentConfig.PicoCDBuffers = 0;
6f748c47 139 currentConfig.scaling = 1; // bilinear filtering for psp
140 currentConfig.scale = currentConfig.hscale32 = currentConfig.hscale40 = 1.0;
703e4c7b 141}
142
143
6f748c47 144extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
db298784 145
146struct Vertex
147{
148 short u,v;
149 short x,y,z;
150};
151
6f748c47 152static struct Vertex __attribute__((aligned(4))) g_vertices[2];
153static unsigned short __attribute__((aligned(16))) localPal[0x100];
154static int dynamic_palette = 0, need_pal_upload = 0, blit_16bit_mode = 0;
155static int fbimg_offs = 0;
156
157static void set_scaling_params(void)
db298784 158{
6f748c47 159 int src_width, fbimg_width, fbimg_height, fbimg_xoffs, fbimg_yoffs;
160 g_vertices[0].x = g_vertices[0].y =
161 g_vertices[0].z = g_vertices[1].z = 0;
162
163 fbimg_height = (int)(240.0 * currentConfig.scale + 0.5);
164 if (Pico.video.reg[12] & 1) {
165 fbimg_width = (int)(320.0 * currentConfig.scale * currentConfig.hscale40 + 0.5);
166 src_width = 320;
167 } else {
168 fbimg_width = (int)(256.0 * currentConfig.scale * currentConfig.hscale32 + 0.5);
169 src_width = 256;
170 }
db298784 171
6f748c47 172 if (fbimg_width >= 480) {
173 g_vertices[0].u = (fbimg_width-480)/2;
174 g_vertices[1].u = src_width - (fbimg_width-480)/2;
175 fbimg_width = 480;
176 fbimg_xoffs = 0;
177 } else {
178 g_vertices[0].u = 0;
179 g_vertices[1].u = src_width;
180 fbimg_xoffs = 240 - fbimg_width/2;
181 }
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 fbimg_offs = (fbimg_yoffs*512 + fbimg_xoffs) * 2; // dst is always 16bit
199
200 lprintf("set_scaling_params:\n");
201 lprintf("offs: %i, %i\n", fbimg_xoffs, fbimg_yoffs);
202 lprintf("xy0, xy1: %i, %i; %i, %i\n", g_vertices[0].x, g_vertices[0].y, g_vertices[1].x, g_vertices[1].y);
203 lprintf("uv0, uv1: %i, %i; %i, %i\n", g_vertices[0].u, g_vertices[0].v, g_vertices[1].u, g_vertices[1].v);
db298784 204}
205
6f748c47 206static void do_slowmode_pal(void)
703e4c7b 207{
6f748c47 208 unsigned int *spal=(void *)Pico.cram;
209 unsigned int *dpal=(void *)localPal;
210 int i;
db298784 211
6f748c47 212 for (i = 0x3f/2; i >= 0; i--)
213 dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
db298784 214
6f748c47 215 if (Pico.video.reg[0xC]&8) // shadow/hilight?
216 {
217 // shadowed pixels
db298784 218 for (i = 0x3f/2; i >= 0; i--)
6f748c47 219 dpal[0x20|i] = dpal[0x60|i] = (spal[i]>>1)&0x738e738e;
220 // hilighted pixels
221 for (i = 0x3f; i >= 0; i--) {
222 int t=localPal[i]&0xe71c;t+=0x4208;
223 if (t&0x20) t|=0x1c;
224 if (t&0x800) t|=0x700;
225 if (t&0x10000) t|=0xe000;
226 t&=0xe71c;
227 localPal[0x80|i]=(unsigned short)t;
228 }
229 localPal[0xe0] = 0;
db298784 230 }
6f748c47 231 Pico.m.dirtyPal = 0;
232 need_pal_upload = 1;
233}
db298784 234
6f748c47 235static void do_slowmode_lines(int line_to)
236{
237 int line = 0, line_len = (Pico.video.reg[12]&1) ? 320 : 256;
238 unsigned short *dst = (unsigned short *)VRAM_STUFF + 512*240/2;
239 unsigned char *src = (unsigned char *)VRAM_CACHED_STUFF + 16;
240 if (!(Pico.video.reg[1]&8)) { line = 8; dst += 512*8; src += 512*8; }
db298784 241
6f748c47 242 for (; line < line_to; line++, dst+=512, src+=512)
243 amips_clut(dst, src, localPal, line_len);
244}
db298784 245
6f748c47 246static void EmuScanPrepare(void)
247{
248 HighCol = (unsigned char *)VRAM_CACHED_STUFF + 8;
249 if (!(Pico.video.reg[1]&8)) HighCol += 8*512;
db298784 250
6f748c47 251 dynamic_palette = 0;
252 if (Pico.m.dirtyPal)
253 do_slowmode_pal();
254}
255
256static int EmuScanSlow(unsigned int num, void *sdata)
257{
258 if (!(Pico.video.reg[1]&8)) num += 8;
259
260 if (Pico.m.dirtyPal) {
261 if (!dynamic_palette) {
262 do_slowmode_lines(num);
263 dynamic_palette = 1;
264 }
265 do_slowmode_pal();
266 }
267
268 if (dynamic_palette) {
269 int line_len = (Pico.video.reg[12]&1) ? 320 : 256;
270 void *dst = (char *)VRAM_STUFF + 512*240 + 512*2*num;
271 amips_clut(dst, HighCol + 8, localPal, line_len);
272 } else
273 HighCol = (unsigned char *)VRAM_CACHED_STUFF + (num+1)*512 + 8;
db298784 274
703e4c7b 275 return 0;
276}
277
6f748c47 278static void blitscreen_clut(void)
db298784 279{
6f748c47 280 int offs = fbimg_offs;
281 offs += (psp_screen == VRAM_FB0) ? VRAMOFFS_FB0 : VRAMOFFS_FB1;
db298784 282
6f748c47 283 sceKernelDcacheWritebackAll();
db298784 284
285 sceGuSync(0,0); // sync with prev
286 sceGuStart(GU_DIRECT, guCmdList);
6f748c47 287 sceGuDrawBuffer(GU_PSM_5650, (void *)offs, 512); // point to back buffer
db298784 288
6f748c47 289 if (dynamic_palette)
290 {
291 if (!blit_16bit_mode) {
292 sceGuTexMode(GU_PSM_5650, 0, 0, 0);
293 sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 512*240);
db298784 294
6f748c47 295 blit_16bit_mode = 1;
296 }
db298784 297 }
6f748c47 298 else
db298784 299 {
6f748c47 300 if (blit_16bit_mode) {
301 sceGuClutMode(GU_PSM_5650,0,0xff,0);
302 sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
303 sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
304 blit_16bit_mode = 0;
305 }
db298784 306
6f748c47 307 if ((PicoOpt&0x10) && Pico.m.dirtyPal)
308 {
309 int i, *dpal = (void *)localPal, *spal = (int *)Pico.cram;
310 for (i = 0x3f/2; i >= 0; i--)
311 dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
312 localPal[0xe0] = 0;
313 Pico.m.dirtyPal = 0;
314 need_pal_upload = 1;
315 }
db298784 316
6f748c47 317 if (need_pal_upload) {
318 need_pal_upload = 0;
319 sceGuClutLoad((256/8), localPal); // upload 32*8 entries (256)
320 }
321 }
703e4c7b 322
6f748c47 323#if 1
324 if (g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x)
325 {
326 struct Vertex* vertices;
327 int x;
703e4c7b 328
6f748c47 329 #define SLICE_WIDTH 32
330 for (x = 0; x < g_vertices[1].x; x += SLICE_WIDTH)
331 {
332 // render sprite
333 vertices = (struct Vertex*)sceGuGetMemory(2 * sizeof(struct Vertex));
334 memcpy(vertices, g_vertices, 2 * sizeof(struct Vertex));
335 vertices[0].u = vertices[0].x = x;
336 vertices[1].u = vertices[1].x = x + SLICE_WIDTH;
337 sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,vertices);
338 }
339 // lprintf("listlen: %iB\n", sceGuCheckList()); // ~480 only
703e4c7b 340 }
6f748c47 341 else
342#endif
343 sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,g_vertices);
344
345 sceGuFinish();
703e4c7b 346}
347
348
349static void cd_leds(void)
350{
351 static int old_reg = 0;
352 unsigned int col_g, col_r, *p;
353
354 if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change
355 old_reg = Pico_mcd->s68k_regs[0];
356
357 p = (unsigned int *)((short *)psp_screen + 512*2+4+2);
358 col_g = (old_reg & 2) ? 0x06000600 : 0;
359 col_r = (old_reg & 1) ? 0xc000c000 : 0;
360 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
361 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
362 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
363}
364
365
6f748c47 366static void dbg_text(void)
703e4c7b 367{
6f748c47 368 int *p, h, len;
369 char text[128];
703e4c7b 370
6f748c47 371 sprintf(text, "sl: %i, 16b: %i", g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x, blit_16bit_mode);
372 len = strlen(text) * 8 / 2;
373 for (h = 0; h < 8; h++) {
374 p = (int *) ((unsigned short *) psp_screen+2+512*(256+h));
375 p = (int *) ((int)p & ~3); // align
376 memset32(p, 0, len);
703e4c7b 377 }
6f748c47 378 emu_textOut16(2, 256, text);
379}
380
381
382/* called after rendering is done, but frame emulation is not finished */
383void blit1(void)
384{
385 if (PicoOpt&0x10)
703e4c7b 386 {
6f748c47 387 int i;
388 unsigned char *pd;
389 // clear top and bottom trash
390 for (pd = PicoDraw2FB+8, i = 8; i > 0; i--, pd += 512)
391 memset32((int *)pd, 0xe0e0e0e0, 320/4);
392 for (pd = PicoDraw2FB+512*232+8, i = 8; i > 0; i--, pd += 512)
393 memset32((int *)pd, 0xe0e0e0e0, 320/4);
703e4c7b 394 }
6f748c47 395
396 blitscreen_clut();
397}
398
399
400static void blit2(const char *fps, const char *notice)
401{
402 int emu_opt = currentConfig.EmuOpt;
403
404 sceGuSync(0,0);
703e4c7b 405
406 if (notice || (emu_opt & 2)) {
6f748c47 407 if (notice) osd_text(4, notice, 0);
408 if (emu_opt & 2) osd_text(OSD_FPS_X, fps, 0);
703e4c7b 409 }
410
6f748c47 411 dbg_text();
412
703e4c7b 413 if ((emu_opt & 0x400) && (PicoMCD & 1))
414 cd_leds();
415
416 psp_video_flip(0);
417}
418
419// clears whole screen or just the notice area (in all buffers)
420static void clearArea(int full)
421{
422 if (full) {
423 memset32(psp_screen, 0, 512*272*2/4);
424 psp_video_flip(0);
425 memset32(psp_screen, 0, 512*272*2/4);
6f748c47 426 memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*240/4);
427 memset32((int *)VRAM_CACHED_STUFF+512*240/4, 0, 512*240*2/4);
703e4c7b 428 } else {
429 void *fb = psp_video_get_active_fb();
430 memset32((int *)((char *)psp_screen + 512*264*2), 0, 512*8*2/4);
431 memset32((int *)((char *)fb + 512*264*2), 0, 512*8*2/4);
432 }
433}
434
435static void vidResetMode(void)
436{
db298784 437 // setup GU
438 sceGuSync(0,0); // sync with prev
439 sceGuStart(GU_DIRECT, guCmdList);
440
441 sceGuClutMode(GU_PSM_5650,0,0xff,0);
db298784 442 sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
443 sceGuTexFunc(GU_TFX_REPLACE,GU_TCC_RGB);
6f748c47 444 if (currentConfig.scaling)
445 sceGuTexFilter(GU_LINEAR, GU_LINEAR);
446 else sceGuTexFilter(GU_NEAREST, GU_NEAREST);
db298784 447 sceGuTexScale(1.0f,1.0f);
448 sceGuTexOffset(0.0f,0.0f);
db298784 449
6f748c47 450 sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
db298784 451
6f748c47 452 // slow rend.
453 PicoDrawSetColorFormat(-1);
454 PicoScan = EmuScanSlow;
db298784 455
6f748c47 456 localPal[0xe0] = 0;
703e4c7b 457 Pico.m.dirtyPal = 1;
6f748c47 458 blit_16bit_mode = dynamic_palette = 0;
703e4c7b 459
db298784 460 sceGuFinish();
6f748c47 461 set_scaling_params();
db298784 462 sceGuSync(0,0);
703e4c7b 463}
6f748c47 464
db298784 465/*
703e4c7b 466static void updateSound(int len)
467{
468 if (PicoOpt&8) len<<=1;
469
470 // TODO..
471}
db298784 472*/
703e4c7b 473
474static void SkipFrame(void)
475{
476 PicoSkipFrame=1;
477 PicoFrame();
478 PicoSkipFrame=0;
479}
480
481void emu_forcedFrame(void)
482{
483 int po_old = PicoOpt;
484 int eo_old = currentConfig.EmuOpt;
485
486 PicoOpt &= ~0x0010;
487 PicoOpt |= 0x4080; // soft_scale | acc_sprites
488 currentConfig.EmuOpt |= 0x80;
489
6f748c47 490 vidResetMode();
491 memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*8/4); // borders
492 memset32((int *)VRAM_CACHED_STUFF + 512*232/4, 0xe0e0e0e0, 512*8/4);
493
494 PicoDrawSetColorFormat(-1);
495 PicoScan = EmuScanSlow;
db298784 496 EmuScanPrepare();
703e4c7b 497 PicoFrameDrawOnly();
6f748c47 498 blit1();
499 sceGuSync(0,0);
703e4c7b 500
501 PicoOpt = po_old;
502 currentConfig.EmuOpt = eo_old;
503}
504
505
506static void RunEvents(unsigned int which)
507{
508 if (which & 0x1800) // save or load (but not both)
509 {
510 int do_it = 1;
511
512 if ( emu_checkSaveFile(state_slot) &&
513 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load
514 (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) // save
515 {
516 int keys;
6f748c47 517 blit2("", (which & 0x1000) ? "LOAD STATE? (X=yes, O=no)" : "OVERWRITE SAVE? (X=yes, O=no)");
703e4c7b 518 while( !((keys = psp_pad_read(1)) & (BTN_X|BTN_CIRCLE)) )
519 psp_msleep(50);
520 if (keys & BTN_CIRCLE) do_it = 0;
521 while( ((keys = psp_pad_read(1)) & (BTN_X|BTN_CIRCLE)) ) // wait for release
522 psp_msleep(50);
523 clearArea(0);
524 }
525
526 if (do_it)
527 {
6f748c47 528 osd_text(4, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME", 1);
529 PicoStateProgressCB = emu_msg_cb;
703e4c7b 530 emu_SaveLoadGame((which & 0x1000) >> 12, 0);
531 PicoStateProgressCB = NULL;
532 psp_msleep(0);
533 }
534
535 reset_timing = 1;
536 }
537 if (which & 0x0400) // switch renderer
538 {
539 if (PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }
540 else { PicoOpt|= 0x10; currentConfig.EmuOpt &= ~0x80; }
541
542 vidResetMode();
543
544 if (PicoOpt&0x10) {
545 strcpy(noticeMsg, " 8bit fast renderer");
546 } else if (currentConfig.EmuOpt&0x80) {
547 strcpy(noticeMsg, "16bit accurate renderer");
548 } else {
549 strcpy(noticeMsg, " 8bit accurate renderer");
550 }
551
552 noticeMsgTime = sceKernelGetSystemTimeLow();
553 }
554 if (which & 0x0300)
555 {
556 if(which&0x0200) {
557 state_slot -= 1;
558 if(state_slot < 0) state_slot = 9;
559 } else {
560 state_slot += 1;
561 if(state_slot > 9) state_slot = 0;
562 }
563 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");
564 noticeMsgTime = sceKernelGetSystemTimeLow();
565 }
566}
567
568static void updateKeys(void)
569{
570 unsigned int keys, allActions[2] = { 0, 0 }, events;
571 static unsigned int prevEvents = 0;
572 int i;
573
574 keys = psp_pad_read(0);
2b90fc61 575 if (keys & PSP_CTRL_HOME)
576 sceDisplayWaitVblankStart();
577
703e4c7b 578 if (keys & BTN_SELECT)
579 engineState = PGS_Menu;
580
581 keys &= CONFIGURABLE_KEYS;
582
583 for (i = 0; i < 32; i++)
584 {
585 if (keys & (1 << i))
586 {
587 int pl, acts = currentConfig.KeyBinds[i];
588 if (!acts) continue;
589 pl = (acts >> 16) & 1;
590 if (combo_keys & (1 << i))
591 {
592 int u = i+1, acts_c = acts & combo_acts;
593 // let's try to find the other one
594 if (acts_c)
595 for (; u < 32; u++)
596 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {
597 allActions[pl] |= acts_c;
598 keys &= ~((1 << i) | (1 << u));
599 break;
600 }
601 // add non-combo actions if combo ones were not found
602 if (!acts_c || u == 32)
603 allActions[pl] |= acts & ~combo_acts;
604 } else {
605 allActions[pl] |= acts;
606 }
607 }
608 }
609
610 PicoPad[0] = (unsigned short) allActions[0];
611 PicoPad[1] = (unsigned short) allActions[1];
612
613 events = (allActions[0] | allActions[1]) >> 16;
614
615 // volume is treated in special way and triggered every frame
616 if ((events & 0x6000) && PsndOut != NULL)
617 {
618 int vol = currentConfig.volume;
619 if (events & 0x2000) {
620 if (vol < 100) vol++;
621 } else {
622 if (vol > 0) vol--;
623 }
624 // FrameworkAudio_SetVolume(vol, vol); // TODO
625 sprintf(noticeMsg, "VOL: %02i ", vol);
626 noticeMsgTime = sceKernelGetSystemTimeLow();
627 currentConfig.volume = vol;
628 }
629
630 events &= ~prevEvents;
631 if (events) RunEvents(events);
632 if (movie_data) emu_updateMovie();
633
634 prevEvents = (allActions[0] | allActions[1]) >> 16;
635}
636
637static void find_combos(void)
638{
639 int act, u;
640
641 // find out which keys and actions are combos
642 combo_keys = combo_acts = 0;
643 for (act = 0; act < 32; act++)
644 {
645 int keyc = 0;
646 if (act == 16 || act == 17) continue; // player2 flag
647 for (u = 0; u < 32; u++)
648 {
649 if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;
650 }
651 if (keyc > 1)
652 {
653 // loop again and mark those keys and actions as combo
654 for (u = 0; u < 32; u++)
655 {
656 if (currentConfig.KeyBinds[u] & (1 << act)) {
657 combo_keys |= 1 << u;
658 combo_acts |= 1 << act;
659 }
660 }
661 }
662 }
663}
664
665
666static void simpleWait(unsigned int until)
667{
668 unsigned int tval;
669 int diff;
670
671 tval = sceKernelGetSystemTimeLow();
672 diff = (int)until - (int)tval;
673 if (diff >= 512 && diff < 100*1024)
674 sceKernelDelayThread(diff);
675}
676
677void emu_Loop(void)
678{
679 //static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
680 char fpsbuff[24]; // fps count c string
681 unsigned int tval, tval_prev = 0, tval_thissec = 0; // timing
682 int frames_done = 0, frames_shown = 0, oldmodes = 0;
683 int target_fps, target_frametime, lim_time, tval_diff, i;
684 char *notice = NULL;
685
686 lprintf("entered emu_Loop()\n");
687
688 fpsbuff[0] = 0;
689
2b90fc61 690 if (currentConfig.CPUclock != psp_get_cpu_clock()) {
691 lprintf("setting cpu clock to %iMHz... ", currentConfig.CPUclock);
692 i = psp_set_cpu_clock(currentConfig.CPUclock);
693 lprintf(i ? "failed\n" : "done\n");
694 currentConfig.CPUclock = psp_get_cpu_clock();
695 }
696
703e4c7b 697 // make sure we are in correct mode
698 vidResetMode();
6f748c47 699 clearArea(1);
703e4c7b 700 Pico.m.dirtyPal = 1;
701 oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
702 find_combos();
703
704 // pal/ntsc might have changed, reset related stuff
705 target_fps = Pico.m.pal ? 50 : 60;
706 target_frametime = Pico.m.pal ? (1000000<<8)/50 : (1000000<<8)/60+1;
707 reset_timing = 1;
708
709 // prepare CD buffer
710 if (PicoMCD & 1) PicoCDBufferInit();
711
712 // prepare sound stuff
713 PsndOut = NULL;
714#if 0 // TODO
715 if (currentConfig.EmuOpt & 4)
716 {
717 int ret, snd_excess_add, stereo;
718 if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
719 sound_rerate(Pico.m.frame_count ? 1 : 0);
720 }
721 stereo=(PicoOpt&8)>>3;
722 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;
723 snd_cbuf_samples = (PsndRate<<stereo) * 16 / target_fps;
724 lprintf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
725 PsndRate, PsndLen, snd_excess_add, stereo, Pico.m.pal);
726 ret = FrameworkAudio_Init(PsndRate, snd_cbuf_samples, stereo);
727 if (ret != 0) {
728 lprintf("FrameworkAudio_Init() failed: %i\n", ret);
729 sprintf(noticeMsg, "sound init failed (%i), snd disabled", ret);
730 noticeMsgTime = sceKernelGetSystemTimeLow();
731 currentConfig.EmuOpt &= ~4;
732 } else {
733 FrameworkAudio_SetVolume(currentConfig.volume, currentConfig.volume);
734 PicoWriteSound = updateSound;
735 snd_cbuff = FrameworkAudio_56448Buffer();
736 PsndOut = snd_cbuff + snd_cbuf_samples / 2; // start writing at the middle
737 snd_all_samples = 0;
738 PsndRate_old = PsndRate;
739 PicoOpt_old = PicoOpt;
740 pal_old = Pico.m.pal;
741 }
742 }
743#endif
744
745 // loop?
746 while (engineState == PGS_Running)
747 {
748 int modes;
749
750 tval = sceKernelGetSystemTimeLow();
751 if (reset_timing || tval < tval_prev) {
752 //stdbg("timing reset");
753 reset_timing = 0;
754 tval_thissec = tval;
755 frames_shown = frames_done = 0;
756 }
757
758 // show notice message?
759 if (noticeMsgTime) {
760 static int noticeMsgSum;
761 if (tval - noticeMsgTime > 2000000) { // > 2.0 sec
762 noticeMsgTime = 0;
763 clearArea(0);
764 notice = 0;
765 } else {
766 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
767 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
768 notice = noticeMsg;
769 }
770 }
771
772 // check for mode changes
773 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
774 if (modes != oldmodes) {
775 oldmodes = modes;
776 clearArea(1);
6f748c47 777 set_scaling_params();
703e4c7b 778 }
779
780 // second passed?
781 if (tval - tval_thissec >= 1000000)
782 {
783#ifdef BENCHMARK
784 static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];
785 if(++bench == 10) {
786 bench = 0;
787 bench_fps_s = bench_fps;
788 bf[bfp++ & 3] = bench_fps;
789 bench_fps = 0;
790 }
791 bench_fps += frames_shown;
792 sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);
793#else
794 if(currentConfig.EmuOpt & 2)
795 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);
796#endif
797 tval_thissec += 1000000;
798
799 if (currentConfig.Frameskip < 0) {
800 frames_done -= target_fps; if (frames_done < 0) frames_done = 0;
801 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;
802 if (frames_shown > frames_done) frames_shown = frames_done;
803 } else {
804 frames_done = frames_shown = 0;
805 }
806 }
807#ifdef PFRAMES
808 sprintf(fpsbuff, "%i", Pico.m.frame_count);
809#endif
810
811 tval_prev = tval;
812 lim_time = (frames_done+1) * target_frametime;
813 if (currentConfig.Frameskip >= 0) // frameskip enabled
814 {
815 for (i = 0; i < currentConfig.Frameskip; i++) {
816 updateKeys();
817 SkipFrame(); frames_done++;
818 if (PsndOut) { // do framelimitting if sound is enabled
819 int tval_diff;
820 tval = sceKernelGetSystemTimeLow();
821 tval_diff = (int)(tval - tval_thissec) << 8;
822 if (tval_diff < lim_time) // we are too fast
823 simpleWait(tval + ((lim_time - tval_diff)>>8));
824 }
825 lim_time += target_frametime;
826 }
827 }
828 else // auto frameskip
829 {
830 int tval_diff;
831 tval = sceKernelGetSystemTimeLow();
832 tval_diff = (int)(tval - tval_thissec) << 8;
833 if (tval_diff > lim_time)
834 {
835 // no time left for this frame - skip
836 if (tval_diff - lim_time >= (300000<<8)) {
837 /* something caused a slowdown for us (disk access? cache flush?)
838 * try to recover by resetting timing... */
839 reset_timing = 1;
840 continue;
841 }
842 updateKeys();
843 SkipFrame(); frames_done++;
844 continue;
845 }
846 }
847
848 updateKeys();
849
850 if (!(PicoOpt&0x10))
db298784 851 EmuScanPrepare();
703e4c7b 852
853 PicoFrame();
854
6f748c47 855 blit2(fpsbuff, notice);
703e4c7b 856
857 // check time
858 tval = sceKernelGetSystemTimeLow();
859 tval_diff = (int)(tval - tval_thissec) << 8;
860
861 if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300000<<8)) // slowdown detection
862 reset_timing = 1;
863 else if (PsndOut != NULL || currentConfig.Frameskip < 0)
864 {
865 // sleep if we are still too fast
866 if (tval_diff < lim_time)
867 {
868 // we are too fast
869 simpleWait(tval + ((lim_time - tval_diff) >> 8));
870 }
871 }
872
873 frames_done++; frames_shown++;
874 }
875
876
877 if (PicoMCD & 1) PicoCDBufferFree();
878/*
879 if (PsndOut != NULL) {
880 PsndOut = snd_cbuff = NULL;
881 FrameworkAudio_Close();
882 }
883*/
884 // save SRAM
885 if ((currentConfig.EmuOpt & 1) && SRam.changed) {
6f748c47 886 emu_msg_cb("Writing SRAM/BRAM..");
703e4c7b 887 emu_SaveLoadGame(0, 1);
888 SRam.changed = 0;
889 }
890}
891
892
2951214e 893void emu_ResetGame(void)
894{
895 PicoReset(0);
703e4c7b 896 reset_timing = 1;
2951214e 897}
898
PicoDrive's frontend in a lib