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giz port, restructuring
[libpicofe.git] / gp2x / emu.c
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6ab2f79c 1// (c) Copyright 2006-2007 notaz, All rights reserved.\r
720ee7f6 2// Free for non-commercial use.\r
3\r
4// For commercial use, separate licencing terms must be obtained.\r
5\r
6#include <stdio.h>\r
7#include <stdlib.h>\r
8#include <sys/time.h>\r
4ffd2858 9#include <sys/stat.h>\r
10#include <sys/types.h>\r
720ee7f6 11#include <linux/limits.h>\r
12#include <ctype.h>\r
13#include <unistd.h>\r
14\r
15#include <stdarg.h>\r
16\r
17#include "emu.h"\r
18#include "gp2x.h"\r
19#include "usbjoy.h"\r
20#include "menu.h"\r
c7a4ff64 21#include "../common/arm_utils.h"\r
22#include "../common/fonts.h"\r
f013066e 23#include "../common/emu.h"\r
720ee7f6 24#include "cpuctrl.h"\r
25\r
70d2ecc5 26#include <Pico/PicoInt.h>\r
27#include <Pico/Patch.h>\r
28#include <zlib/zlib.h>\r
720ee7f6 29\r
4327ec37 30//#define PFRAMES\r
720ee7f6 31\r
32#ifdef BENCHMARK\r
33#define OSD_FPS_X 220\r
34#else\r
35#define OSD_FPS_X 260\r
36#endif\r
37\r
720ee7f6 38\r
39int engineState;\r
40int select_exits = 0;\r
720ee7f6 41\r
42char romFileName[PATH_MAX];\r
720ee7f6 43\r
44extern int crashed_940;\r
45\r
3ef975c9 46static short sndBuffer[2*44100/50];\r
720ee7f6 47static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
8f1b51ef 48static int osd_fps_x;\r
720ee7f6 49static int combo_keys = 0, combo_acts = 0; // keys and actions which need button combos\r
50static int gp2x_old_gamma = 100;\r
f013066e 51char noticeMsg[64]; // notice msg to draw\r
c7a4ff64 52unsigned char *PicoDraw2FB = NULL; // temporary buffer for alt renderer\r
8f1b51ef 53int reset_timing = 0;\r
720ee7f6 54\r
f013066e 55static void emu_msg_cb(const char *msg);\r
56static void emu_msg_tray_open(void);\r
720ee7f6 57\r
720ee7f6 58\r
f013066e 59void emu_noticeMsgUpdated(void)\r
720ee7f6 60{\r
f013066e 61 gettimeofday(&noticeMsgTime, 0);\r
720ee7f6 62}\r
63\r
f013066e 64void emu_getMainDir(char *dst, int len)\r
25fced50 65{\r
f013066e 66 extern char **g_argv;\r
67 int j;\r
25fced50 68\r
f013066e 69 strncpy(dst, g_argv[0], len);\r
70 len -= 32; // reserve\r
71 if (len < 0) len = 0;\r
72 dst[len] = 0;\r
73 for (j = strlen(dst); j > 0; j--)\r
74 if (dst[j] == '/') { dst[j+1] = 0; break; }\r
25fced50 75}\r
76\r
720ee7f6 77void emu_Init(void)\r
78{\r
79 // make temp buffer for alt renderer\r
c7a4ff64 80 PicoDraw2FB = malloc((8+320)*(8+240+8));\r
81 if (!PicoDraw2FB)\r
720ee7f6 82 {\r
c7a4ff64 83 printf("PicoDraw2FB == 0\n");\r
720ee7f6 84 }\r
85\r
4ffd2858 86 // make dirs for saves, cfgs, etc.\r
87 mkdir("mds", 0777);\r
88 mkdir("srm", 0777);\r
89 mkdir("brm", 0777);\r
90 mkdir("cfg", 0777);\r
91\r
720ee7f6 92 PicoInit();\r
dfa4c846 93 PicoMessage = emu_msg_cb;\r
5e2e14f2 94 PicoMCDopenTray = emu_msg_tray_open;\r
95 PicoMCDcloseTray = menu_loop_tray;\r
720ee7f6 96}\r
97\r
98\r
720ee7f6 99static void find_combos(void)\r
100{\r
101 int act, u;\r
102\r
103 // find out which keys and actions are combos\r
104 combo_keys = combo_acts = 0;\r
105 for (act = 0; act < 32; act++)\r
106 {\r
107 int keyc = 0;\r
108 if (act == 16) continue; // player2 flag\r
109 for (u = 0; u < 32; u++)\r
110 {\r
111 if (currentConfig.KeyBinds[u] & (1 << act)) keyc++;\r
112 }\r
113 if (keyc > 1)\r
114 {\r
115 // loop again and mark those keys and actions as combo\r
116 for (u = 0; u < 32; u++)\r
117 {\r
118 if (currentConfig.KeyBinds[u] & (1 << act)) {\r
119 combo_keys |= 1 << u;\r
120 combo_acts |= 1 << act;\r
121 }\r
122 }\r
123 }\r
124 }\r
125 // printf("combo keys/acts: %08x %08x\n", combo_keys, combo_acts);\r
126}\r
127\r
128\r
f013066e 129static void scaling_update(void)\r
79cad122 130{\r
131 PicoOpt &= ~0x4100;\r
132 switch (currentConfig.scaling) {\r
133 default: break; // off\r
134 case 1: // hw hor\r
135 case 2: PicoOpt |= 0x0100; break; // hw hor+vert\r
136 case 3: PicoOpt |= 0x4000; break; // sw hor\r
137 }\r
138}\r
139\r
140\r
720ee7f6 141void emu_Deinit(void)\r
142{\r
143 // save SRAM\r
144 if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
145 emu_SaveLoadGame(0, 1);\r
146 SRam.changed = 0;\r
147 }\r
148\r
79cad122 149 if (!(currentConfig.EmuOpt & 0x20)) {\r
150 FILE *f = fopen(PicoConfigFile, "r+b");\r
151 if (!f) emu_WriteConfig(0);\r
152 else {\r
153 // if we already have config, reload it, except last ROM\r
154 fseek(f, sizeof(currentConfig.lastRomFile), SEEK_SET);\r
155 fread(&currentConfig.EmuOpt, 1, sizeof(currentConfig) - sizeof(currentConfig.lastRomFile), f);\r
156 fseek(f, 0, SEEK_SET);\r
157 fwrite(&currentConfig, 1, sizeof(currentConfig), f);\r
158 fflush(f);\r
159 fclose(f);\r
160#ifndef NO_SYNC\r
161 sync();\r
162#endif\r
163 }\r
164 }\r
165\r
c7a4ff64 166 free(PicoDraw2FB);\r
720ee7f6 167\r
168 PicoExit();\r
720ee7f6 169\r
170 // restore gamma\r
171 if (gp2x_old_gamma != 100)\r
55a951dd 172 set_gamma(100, 0);\r
720ee7f6 173}\r
174\r
f013066e 175void emu_setDefaultConfig(void)\r
176{\r
177 memset(&currentConfig, 0, sizeof(currentConfig));\r
178 currentConfig.lastRomFile[0] = 0;\r
179 currentConfig.EmuOpt = 0x1f | 0x600; // | confirm_save, cd_leds\r
180 currentConfig.PicoOpt = 0x0f | 0xe00; // | use_940, cd_pcm, cd_cdda\r
181 currentConfig.PsndRate = 22050; // 44100;\r
182 currentConfig.PicoRegion = 0; // auto\r
183 currentConfig.PicoAutoRgnOrder = 0x184; // US, EU, JP\r
184 currentConfig.Frameskip = -1; // auto\r
185 currentConfig.CPUclock = 200;\r
186 currentConfig.volume = 50;\r
187 currentConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
188 currentConfig.KeyBinds[ 4] = 1<<1;\r
189 currentConfig.KeyBinds[ 2] = 1<<2;\r
190 currentConfig.KeyBinds[ 6] = 1<<3;\r
191 currentConfig.KeyBinds[14] = 1<<4;\r
192 currentConfig.KeyBinds[13] = 1<<5;\r
193 currentConfig.KeyBinds[12] = 1<<6;\r
194 currentConfig.KeyBinds[ 8] = 1<<7;\r
195 currentConfig.KeyBinds[15] = 1<<26; // switch rend\r
196 currentConfig.KeyBinds[10] = 1<<27; // save state\r
197 currentConfig.KeyBinds[11] = 1<<28; // load state\r
198 currentConfig.KeyBinds[23] = 1<<29; // vol up\r
199 currentConfig.KeyBinds[22] = 1<<30; // vol down\r
200 currentConfig.gamma = 100;\r
201 currentConfig.PicoCDBuffers = 64;\r
202 currentConfig.scaling = 0;\r
13059a60 203}\r
204\r
0805b5b4 205void osd_text(int x, int y, const char *text)\r
720ee7f6 206{\r
207 int len = strlen(text)*8;\r
208\r
209 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
daf91588 210 int *p, i, h;\r
720ee7f6 211 x &= ~3; // align x\r
212 len = (len+3) >> 2;\r
213 for (h = 0; h < 8; h++) {\r
214 p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
daf91588 215 for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
720ee7f6 216 }\r
f013066e 217 emu_textOut8(x, y, text);\r
720ee7f6 218 } else {\r
219 int *p, i, h;\r
220 x &= ~1; // align x\r
221 len = (len+1) >> 1;\r
222 for (h = 0; h < 8; h++) {\r
223 p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
224 for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
225 }\r
f013066e 226 emu_textOut16(x, y, text);\r
720ee7f6 227 }\r
228}\r
229\r
daf91588 230static void cd_leds(void)\r
231{\r
8dfb9fd5 232 // mmu problems?\r
233// static\r
234 int old_reg;\r
235// if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change\r
daf91588 236 old_reg = Pico_mcd->s68k_regs[0];\r
237\r
238 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
239 // 8-bit modes\r
240 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
241 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
49fe50f0 242 *(unsigned int *)((char *)gp2x_screen + 320*2+ 4) =\r
243 *(unsigned int *)((char *)gp2x_screen + 320*3+ 4) =\r
244 *(unsigned int *)((char *)gp2x_screen + 320*4+ 4) = col_g;\r
245 *(unsigned int *)((char *)gp2x_screen + 320*2+12) =\r
246 *(unsigned int *)((char *)gp2x_screen + 320*3+12) =\r
247 *(unsigned int *)((char *)gp2x_screen + 320*4+12) = col_r;\r
daf91588 248 } else {\r
249 // 16-bit modes\r
49fe50f0 250 unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+4);\r
daf91588 251 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
252 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
49fe50f0 253 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
254 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
255 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
daf91588 256 }\r
257}\r
258\r
720ee7f6 259static int EmuScan16(unsigned int num, void *sdata)\r
260{\r
261 if (!(Pico.video.reg[1]&8)) num += 8;\r
262 DrawLineDest = (unsigned short *) gp2x_screen + 320*(num+1);\r
263\r
264 return 0;\r
265}\r
266\r
267static int EmuScan8(unsigned int num, void *sdata)\r
268{\r
269 if (!(Pico.video.reg[1]&8)) num += 8;\r
270 DrawLineDest = (unsigned char *) gp2x_screen + 320*(num+1);\r
271\r
272 return 0;\r
273}\r
274\r
e5d315a5 275int localPal[0x100];\r
720ee7f6 276static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
277\r
0805b5b4 278static void blit(const char *fps, const char *notice)\r
720ee7f6 279{\r
daf91588 280 int emu_opt = currentConfig.EmuOpt;\r
281\r
720ee7f6 282 if (PicoOpt&0x10) {\r
283 // 8bit fast renderer\r
284 if (Pico.m.dirtyPal) {\r
285 Pico.m.dirtyPal = 0;\r
286 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
287 // feed new palette to our device\r
288 gp2x_video_setpalette(localPal, 0x40);\r
289 }\r
c7a4ff64 290 vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
daf91588 291 } else if (!(emu_opt&0x80)) {\r
720ee7f6 292 // 8bit accurate renderer\r
293 if (Pico.m.dirtyPal) {\r
294 Pico.m.dirtyPal = 0;\r
295 if(Pico.video.reg[0xC]&8) { // shadow/hilight mode\r
296 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
297 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
298 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
299 blockcpy(localPal+0xc0, localPal+0x40, 0x40*4);\r
daf91588 300 localPal[0xc0] = 0x0000c000;\r
301 localPal[0xd0] = 0x00c00000;\r
720ee7f6 302 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
303 localPal[0xf0] = 0x00ffffff;\r
304 gp2x_video_setpalette(localPal, 0x100);\r
305 } else if (rendstatus & 0x20) { // mid-frame palette changes\r
306 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
307 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
308 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
309 gp2x_video_setpalette(localPal, 0xc0);\r
310 } else {\r
311 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
312 gp2x_video_setpalette(localPal, 0x40);\r
313 }\r
314 }\r
315 }\r
316\r
79cad122 317 if (notice || (emu_opt & 2)) {\r
318 int h = 232;\r
319 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 8;\r
320 if (notice) osd_text(4, h, notice);\r
321 if (emu_opt & 2)\r
322 osd_text(osd_fps_x, h, fps);\r
323 }\r
daf91588 324 if ((emu_opt & 0x400) && (PicoMCD & 1))\r
325 cd_leds();\r
720ee7f6 326\r
327 //gp2x_video_wait_vsync();\r
328 gp2x_video_flip();\r
329\r
330 if (!(PicoOpt&0x10)) {\r
331 if (!(Pico.video.reg[1]&8)) {\r
332 if (currentConfig.EmuOpt&0x80) {\r
333 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
334 } else {\r
335 DrawLineDest = (unsigned char *) gp2x_screen + 320*8;\r
336 }\r
337 } else {\r
338 DrawLineDest = gp2x_screen;\r
339 }\r
340 }\r
341}\r
342\r
343\r
344// clears whole screen or just the notice area (in all buffers)\r
345static void clearArea(int full)\r
346{\r
daf91588 347 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
348 // 8-bit renderers\r
349 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
350 else gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
351 } else {\r
720ee7f6 352 // 16bit accurate renderer\r
353 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
354 else gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
720ee7f6 355 }\r
356}\r
357\r
358\r
359static void vidResetMode(void)\r
360{\r
361 if (PicoOpt&0x10) {\r
720ee7f6 362 gp2x_video_changemode(8);\r
720ee7f6 363 } else if (currentConfig.EmuOpt&0x80) {\r
13059a60 364 gp2x_video_changemode(16);\r
720ee7f6 365 PicoDrawSetColorFormat(1);\r
366 PicoScan = EmuScan16;\r
367 PicoScan(0, 0);\r
368 } else {\r
daf91588 369 gp2x_video_changemode(8);\r
370 PicoDrawSetColorFormat(2);\r
371 PicoScan = EmuScan8;\r
372 PicoScan(0, 0);\r
373 }\r
374 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
375 // setup pal for 8-bit modes\r
376 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
377 localPal[0xd0] = 0x00c00000;\r
720ee7f6 378 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
379 localPal[0xf0] = 0x00ffffff;\r
720ee7f6 380 gp2x_video_setpalette(localPal, 0x100);\r
381 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
382 gp2x_video_flip();\r
720ee7f6 383 }\r
384 Pico.m.dirtyPal = 1;\r
385 // reset scaling\r
79cad122 386 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
387 gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
388 else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
720ee7f6 389}\r
390\r
391\r
dfa4c846 392static void emu_msg_cb(const char *msg)\r
393{\r
394 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
395 // 8-bit renderers\r
396 gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
397 osd_text(4, 232, msg);\r
398 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232, 320*232, 320*8);\r
399 } else {\r
400 // 16bit accurate renderer\r
401 gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
402 osd_text(4, 232, msg);\r
403 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232*2, 320*232*2, 320*8*2);\r
404 }\r
405 gettimeofday(&noticeMsgTime, 0);\r
406 noticeMsgTime.tv_sec -= 2;\r
e5589947 407\r
408 /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
409 reset_timing = 1;\r
dfa4c846 410}\r
411\r
1078e544 412static void emu_state_cb(const char *str)\r
413{\r
414 clearArea(0);\r
415 blit("", str);\r
416}\r
417\r
5e2e14f2 418static void emu_msg_tray_open(void)\r
419{\r
420 strcpy(noticeMsg, "CD tray opened");\r
421 gettimeofday(&noticeMsgTime, 0);\r
422}\r
423\r
720ee7f6 424static void RunEvents(unsigned int which)\r
425{\r
426 if(which & 0x1800) { // save or load (but not both)\r
427 int do_it = 1;\r
f013066e 428 if ( emu_checkSaveFile(state_slot) &&\r
46ede6a6 429 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load\r
430 (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
720ee7f6 431 unsigned long keys;\r
46ede6a6 432 blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
720ee7f6 433 while( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
434 usleep(50*1024);\r
435 if (keys & GP2X_X) do_it = 0;\r
436 clearArea(0);\r
437 }\r
438 if (do_it) {\r
0805b5b4 439 osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
1078e544 440 PicoStateProgressCB = emu_state_cb;\r
441 gp2x_memcpy_all_buffers(gp2x_screen, 0, 320*240*2);\r
0805b5b4 442 emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
1078e544 443 PicoStateProgressCB = NULL;\r
720ee7f6 444 }\r
445\r
446 reset_timing = 1;\r
447 }\r
448 if(which & 0x0400) { // switch renderer\r
449 if ( PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
450 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
451 else currentConfig.EmuOpt &= ~0x80;\r
452\r
453 vidResetMode();\r
454\r
455 if (PicoOpt&0x10) {\r
456 strcpy(noticeMsg, " 8bit fast renderer");\r
457 } else if (currentConfig.EmuOpt&0x80) {\r
458 strcpy(noticeMsg, "16bit accurate renderer");\r
459 } else {\r
460 strcpy(noticeMsg, " 8bit accurate renderer");\r
461 }\r
462\r
463 gettimeofday(&noticeMsgTime, 0);\r
464 }\r
465 if(which & 0x0300) {\r
466 if(which&0x0200) {\r
467 state_slot -= 1;\r
468 if(state_slot < 0) state_slot = 9;\r
469 } else {\r
470 state_slot += 1;\r
471 if(state_slot > 9) state_slot = 0;\r
472 }\r
f013066e 473 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
720ee7f6 474 gettimeofday(&noticeMsgTime, 0);\r
475 }\r
476 if(which & 0x0080) {\r
477 engineState = PGS_Menu;\r
478 }\r
479}\r
480\r
481\r
482static void updateKeys(void)\r
483{\r
484 unsigned long keys, allActions[2] = { 0, 0 }, events;\r
485 static unsigned long prevEvents = 0;\r
486 int joy, i;\r
487\r
488 keys = gp2x_joystick_read(0);\r
489 if (keys & GP2X_SELECT) {\r
490 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
491 // wait until select is released, so menu would not resume game\r
492 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
493 }\r
494\r
495 keys &= CONFIGURABLE_KEYS;\r
496\r
497 for (i = 0; i < 32; i++)\r
498 {\r
499 if (keys & (1 << i)) {\r
500 int pl, acts = currentConfig.KeyBinds[i];\r
501 if (!acts) continue;\r
502 pl = (acts >> 16) & 1;\r
503 if (combo_keys & (1 << i)) {\r
504 int u = i+1, acts_c = acts & combo_acts;\r
505 // let's try to find the other one\r
506 if (acts_c)\r
507 for (; u < 32; u++)\r
508 if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {\r
509 allActions[pl] |= acts_c;\r
510 keys &= ~((1 << i) | (1 << u));\r
511 break;\r
512 }\r
513 // add non-combo actions if combo ones were not found\r
514 if (!acts_c || u == 32)\r
515 allActions[pl] |= acts & ~combo_acts;\r
516 } else {\r
517 allActions[pl] |= acts;\r
518 }\r
519 }\r
520 }\r
521\r
522 // add joy inputs\r
523 if (num_of_joys > 0)\r
524 {\r
525 gp2x_usbjoy_update();\r
526 for (joy = 0; joy < num_of_joys; joy++) {\r
527 int keys = gp2x_usbjoy_check2(joy);\r
528 for (i = 0; i < 32; i++) {\r
529 if (keys & (1 << i)) {\r
530 int acts = currentConfig.JoyBinds[joy][i];\r
531 int pl = (acts >> 16) & 1;\r
532 allActions[pl] |= acts;\r
533 }\r
534 }\r
535 }\r
536 }\r
537\r
25fced50 538 PicoPad[0] = (unsigned short) allActions[0];\r
539 PicoPad[1] = (unsigned short) allActions[1];\r
720ee7f6 540\r
541 events = (allActions[0] | allActions[1]) >> 16;\r
542\r
543 // volume is treated in special way and triggered every frame\r
544 if(events & 0x6000) {\r
545 int vol = currentConfig.volume;\r
546 if (events & 0x2000) {\r
5e2e14f2 547 if (vol < 99) vol++;\r
720ee7f6 548 } else {\r
549 if (vol > 0) vol--;\r
550 }\r
551 gp2x_sound_volume(vol, vol);\r
552 sprintf(noticeMsg, "VOL: %02i", vol);\r
553 gettimeofday(&noticeMsgTime, 0);\r
554 currentConfig.volume = vol;\r
555 }\r
556\r
557 events &= ~prevEvents;\r
558 if (events) RunEvents(events);\r
f013066e 559 if (movie_data) emu_updateMovie();\r
720ee7f6 560\r
561 prevEvents = (allActions[0] | allActions[1]) >> 16;\r
562}\r
563\r
720ee7f6 564\r
3ef975c9 565static void updateSound(int len)\r
720ee7f6 566{\r
3ef975c9 567 if (PicoOpt&8) len<<=1;\r
720ee7f6 568\r
d9a18943 569 /* avoid writing audio when lagging behind to prevent audio lag */\r
570 if (PicoSkipFrame != 2)\r
571 gp2x_sound_write(PsndOut, len<<1);\r
720ee7f6 572}\r
573\r
574\r
d9a18943 575static void SkipFrame(int do_audio)\r
720ee7f6 576{\r
d9a18943 577 PicoSkipFrame=do_audio ? 1 : 2;\r
720ee7f6 578 PicoFrame();\r
579 PicoSkipFrame=0;\r
720ee7f6 580}\r
581\r
582\r
f013066e 583void emu_forcedFrame(void)\r
4ffd2858 584{\r
585 int po_old = PicoOpt;\r
13059a60 586 int eo_old = currentConfig.EmuOpt;\r
587\r
588 PicoOpt &= ~0x0010;\r
589 PicoOpt |= 0x4080; // soft_scale | acc_sprites\r
590 currentConfig.EmuOpt |= 0x80;\r
4ffd2858 591\r
13059a60 592 //vidResetMode();\r
593 PicoDrawSetColorFormat(1);\r
594 PicoScan = EmuScan16;\r
595 PicoScan(0, 0);\r
596 Pico.m.dirtyPal = 1;\r
597 PicoFrameDrawOnly();\r
4ffd2858 598\r
13059a60 599/*\r
4ffd2858 600 if (!(Pico.video.reg[12]&1)) {\r
dccc2bd0 601 vidCpyM2 = vidCpyM2_32col;\r
4ffd2858 602 clearArea(1);\r
dccc2bd0 603 } else vidCpyM2 = vidCpyM2_40col;\r
4ffd2858 604\r
c7a4ff64 605 vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
4ffd2858 606 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
607 gp2x_video_setpalette(localPal, 0x40);\r
13059a60 608*/\r
e1aa0fa7 609 PicoOpt = po_old;\r
13059a60 610 currentConfig.EmuOpt = eo_old;\r
4ffd2858 611}\r
612\r
720ee7f6 613static void simpleWait(int thissec, int lim_time)\r
614{\r
615 struct timeval tval;\r
616\r
617 spend_cycles(1024);\r
618 gettimeofday(&tval, 0);\r
619 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
620\r
621 while(tval.tv_usec < lim_time)\r
622 {\r
623 spend_cycles(1024);\r
624 gettimeofday(&tval, 0);\r
625 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
626 }\r
627}\r
628\r
629\r
630void emu_Loop(void)\r
631{\r
632 static int gp2x_old_clock = 200;\r
59d0f042 633 static int PsndRate_old = 0, PicoOpt_old = 0, EmuOpt_old = 0, PsndLen_real = 0, pal_old = 0;\r
720ee7f6 634 char fpsbuff[24]; // fps count c string\r
635 struct timeval tval; // timing\r
636 int thissec = 0, frames_done = 0, frames_shown = 0, oldmodes = 0;\r
59d0f042 637 int target_fps, target_frametime, lim_time, vsync_offset, i;\r
720ee7f6 638 char *notice = 0;\r
639\r
640 printf("entered emu_Loop()\n");\r
641\r
642 if (gp2x_old_clock != currentConfig.CPUclock) {\r
643 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
644 set_FCLK(currentConfig.CPUclock);\r
645 gp2x_old_clock = currentConfig.CPUclock;\r
646 printf(" done\n");\r
647 }\r
648\r
55a951dd 649 if (gp2x_old_gamma != currentConfig.gamma || (EmuOpt_old&0x1000) != (currentConfig.EmuOpt&0x1000)) {\r
650 set_gamma(currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
720ee7f6 651 gp2x_old_gamma = currentConfig.gamma;\r
55a951dd 652 printf("updated gamma to %i, A_SN's curve: %i\n", currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
720ee7f6 653 }\r
654\r
59d0f042 655 if ((EmuOpt_old&0x2000) != (currentConfig.EmuOpt&0x2000)) {\r
656 if (currentConfig.EmuOpt&0x2000)\r
657 set_LCD_custom_rate(Pico.m.pal ? LCDR_100 : LCDR_120);\r
658 else unset_LCD_custom_rate();\r
659 }\r
660\r
661 EmuOpt_old = currentConfig.EmuOpt;\r
720ee7f6 662 fpsbuff[0] = 0;\r
663\r
664 // make sure we are in correct mode\r
665 vidResetMode();\r
f013066e 666 scaling_update();\r
e5d315a5 667 Pico.m.dirtyPal = 1;\r
720ee7f6 668 oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
669 find_combos();\r
670\r
671 // pal/ntsc might have changed, reset related stuff\r
672 target_fps = Pico.m.pal ? 50 : 60;\r
673 target_frametime = 1000000/target_fps;\r
674 reset_timing = 1;\r
675\r
676 // prepare sound stuff\r
677 if(currentConfig.EmuOpt & 4) {\r
3ef975c9 678 int snd_excess_add;\r
4327ec37 679 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old ||\r
680 ((PicoOpt&0x200) && crashed_940)) {\r
720ee7f6 681 /* if 940 is turned off, we need it to be put back to sleep */\r
682 if (!(PicoOpt&0x200) && ((PicoOpt^PicoOpt_old)&0x200)) {\r
8dfb9fd5 683 Reset940(1, 2);\r
720ee7f6 684 Pause940(1);\r
685 }\r
4327ec37 686 sound_rerate(Pico.m.frame_count ? 1 : 0);\r
720ee7f6 687 }\r
720ee7f6 688 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
4327ec37 689 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
690 PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
720ee7f6 691 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
692 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
693 PicoWriteSound = updateSound;\r
3ef975c9 694 memset(sndBuffer, 0, sizeof(sndBuffer));\r
695 PsndOut = sndBuffer;\r
720ee7f6 696 PsndRate_old = PsndRate;\r
697 PsndLen_real = PsndLen;\r
698 PicoOpt_old = PicoOpt;\r
699 pal_old = Pico.m.pal;\r
700 } else {\r
701 PsndOut = 0;\r
702 }\r
703\r
5f9922e6 704 // prepare CD buffer\r
705 if (PicoMCD & 1) PicoCDBufferInit();\r
706\r
59d0f042 707 // calc vsync offset to sync timing code with vsync\r
708 if (currentConfig.EmuOpt&0x2000) {\r
709 gettimeofday(&tval, 0);\r
710 gp2x_video_wait_vsync();\r
711 gettimeofday(&tval, 0);\r
712 vsync_offset = tval.tv_usec;\r
713 while (vsync_offset >= target_frametime)\r
714 vsync_offset -= target_frametime;\r
715 if (!vsync_offset) vsync_offset++;\r
716 printf("vsync_offset: %i\n", vsync_offset);\r
717 } else\r
718 vsync_offset = 0;\r
719\r
720ee7f6 720 // loop?\r
721 while (engineState == PGS_Running)\r
722 {\r
723 int modes;\r
724\r
725 gettimeofday(&tval, 0);\r
726 if(reset_timing) {\r
727 reset_timing = 0;\r
728 thissec = tval.tv_sec;\r
729 frames_shown = frames_done = tval.tv_usec/target_frametime;\r
730 }\r
731\r
732 // show notice message?\r
733 if(noticeMsgTime.tv_sec) {\r
734 static int noticeMsgSum;\r
735 if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
736 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
737 clearArea(0);\r
738 notice = 0;\r
739 } else {\r
740 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
741 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
742 notice = noticeMsg;\r
743 }\r
744 }\r
745\r
746 // check for mode changes\r
747 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
748 if (modes != oldmodes) {\r
749 int scalex = 320;\r
750 osd_fps_x = OSD_FPS_X;\r
751 if (modes & 4) {\r
752 vidCpyM2 = vidCpyM2_40col;\r
753 } else {\r
754 if (PicoOpt & 0x100) {\r
755 vidCpyM2 = vidCpyM2_32col_nobord;\r
756 scalex = 256;\r
757 osd_fps_x = OSD_FPS_X - 64;\r
758 } else {\r
759 vidCpyM2 = vidCpyM2_32col;\r
760 }\r
761 }\r
79cad122 762 if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
763 gp2x_video_RGB_setscaling(8, scalex, 224);\r
764 else gp2x_video_RGB_setscaling(0, scalex, 240);\r
720ee7f6 765 oldmodes = modes;\r
766 clearArea(1);\r
767 }\r
768\r
769 // second changed?\r
770 if(thissec != tval.tv_sec) {\r
771#ifdef BENCHMARK\r
772 static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
773 if(++bench == 10) {\r
774 bench = 0;\r
775 bench_fps_s = bench_fps;\r
776 bf[bfp++ & 3] = bench_fps;\r
777 bench_fps = 0;\r
778 }\r
779 bench_fps += frames_shown;\r
780 sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
781#else\r
782 if(currentConfig.EmuOpt & 2)\r
783 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
784#endif\r
785 thissec = tval.tv_sec;\r
786\r
787 if(PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
788 frames_done = frames_shown = 0;\r
789 } else {\r
790 // it is quite common for this implementation to leave 1 fame unfinished\r
791 // when second changes, but we don't want buffer to starve.\r
792 if(PsndOut && frames_done < target_fps && frames_done > target_fps-5) {\r
793 updateKeys();\r
d9a18943 794 SkipFrame(1); frames_done++;\r
720ee7f6 795 }\r
796\r
797 frames_done -= target_fps; if (frames_done < 0) frames_done = 0;\r
798 frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;\r
799 if (frames_shown > frames_done) frames_shown = frames_done;\r
800 }\r
801 }\r
4327ec37 802#ifdef PFRAMES\r
803 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
804#endif\r
59d0f042 805\r
806 lim_time = (frames_done+1) * target_frametime + vsync_offset;\r
720ee7f6 807 if(currentConfig.Frameskip >= 0) { // frameskip enabled\r
808 for(i = 0; i < currentConfig.Frameskip; i++) {\r
809 updateKeys();\r
d9a18943 810 SkipFrame(1); frames_done++;\r
720ee7f6 811 if (PsndOut) { // do framelimitting if sound is enabled\r
812 gettimeofday(&tval, 0);\r
813 if(thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
814 if(tval.tv_usec < lim_time) { // we are too fast\r
815 simpleWait(thissec, lim_time);\r
816 }\r
817 }\r
818 lim_time += target_frametime;\r
819 }\r
820 } else if(tval.tv_usec > lim_time) { // auto frameskip\r
821 // no time left for this frame - skip\r
f013066e 822 if (tval.tv_usec - lim_time >= 300000) {\r
d032c15a 823 /* something caused a slowdown for us (disk access? cache flush?)\r
824 * try to recover by resetting timing... */\r
825 reset_timing = 1;\r
826 continue;\r
827 }\r
720ee7f6 828 updateKeys();\r
8f1b51ef 829 SkipFrame(tval.tv_usec < lim_time+target_frametime*2); frames_done++;\r
720ee7f6 830 continue;\r
831 }\r
832\r
833 updateKeys();\r
834 PicoFrame();\r
835\r
47f22a1f 836#if 0\r
837if (Pico.m.frame_count == 31563) {\r
838 FILE *f;\r
839 f = fopen("ram_p.bin", "wb");\r
840 if (!f) { printf("!f\n"); exit(1); }\r
841 fwrite(Pico.ram, 1, 0x10000, f);\r
842 fclose(f);\r
843 exit(0);\r
844}\r
845#endif\r
1a20dbc8 846#if 0\r
847 // debug\r
848 {\r
47f22a1f 849 #define BYTE unsigned char\r
850 #define WORD unsigned short\r
851 struct\r
852 {\r
853 BYTE IDLength; /* 00h Size of Image ID field */\r
854 BYTE ColorMapType; /* 01h Color map type */\r
855 BYTE ImageType; /* 02h Image type code */\r
856 WORD CMapStart; /* 03h Color map origin */\r
857 WORD CMapLength; /* 05h Color map length */\r
858 BYTE CMapDepth; /* 07h Depth of color map entries */\r
859 WORD XOffset; /* 08h X origin of image */\r
860 WORD YOffset; /* 0Ah Y origin of image */\r
861 WORD Width; /* 0Ch Width of image */\r
862 WORD Height; /* 0Eh Height of image */\r
863 BYTE PixelDepth; /* 10h Image pixel size */\r
864 BYTE ImageDescriptor; /* 11h Image descriptor byte */\r
865 } __attribute__((packed)) TGAHEAD;\r
866 static unsigned short oldscr[320*240];\r
1a20dbc8 867 FILE *f; char name[128]; int i;\r
47f22a1f 868\r
869 memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
870 TGAHEAD.ImageType = 2;\r
871 TGAHEAD.Width = 320;\r
872 TGAHEAD.Height = 240;\r
873 TGAHEAD.PixelDepth = 16;\r
874 TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
875\r
876 #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
877\r
878 for (i = 0; i < 320*240; i++)\r
879 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
880 if (i < 320*240)\r
1a20dbc8 881 {\r
47f22a1f 882 for (i = 0; i < 320*240; i++)\r
883 oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
884 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
1a20dbc8 885 f = fopen(name, "wb");\r
886 if (!f) { printf("!f\n"); exit(1); }\r
47f22a1f 887 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
888 fwrite(oldscr, 1, 320*240*2, f);\r
1a20dbc8 889 fclose(f);\r
890 }\r
891 }\r
892#endif\r
893\r
720ee7f6 894 // check time\r
895 gettimeofday(&tval, 0);\r
d032c15a 896 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
720ee7f6 897\r
f013066e 898 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
d032c15a 899 reset_timing = 1;\r
900 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
720ee7f6 901 {\r
59d0f042 902 // sleep or vsync if we are still too fast\r
720ee7f6 903 // usleep sleeps for ~20ms minimum, so it is not a solution here\r
720ee7f6 904 if(tval.tv_usec < lim_time)\r
905 {\r
906 // we are too fast\r
59d0f042 907 if (vsync_offset) {\r
908 if (lim_time - tval.tv_usec > target_frametime/2)\r
909 simpleWait(thissec, lim_time - target_frametime/4);\r
910 gp2x_video_wait_vsync();\r
911 } else {\r
912 simpleWait(thissec, lim_time);\r
913 }\r
720ee7f6 914 }\r
915 }\r
916\r
917 blit(fpsbuff, notice);\r
918\r
919 frames_done++; frames_shown++;\r
920 }\r
921\r
5f9922e6 922\r
923 if (PicoMCD & 1) PicoCDBufferFree();\r
924\r
720ee7f6 925 // save SRAM\r
926 if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
6ab2f79c 927 emu_state_cb("Writing SRAM/BRAM..");\r
720ee7f6 928 emu_SaveLoadGame(0, 1);\r
929 SRam.changed = 0;\r
930 }\r
e5d315a5 931\r
13059a60 932 // if in 8bit mode, generate 16bit image for menu background\r
933 if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
f013066e 934 emu_forcedFrame();\r
720ee7f6 935}\r
936\r
937\r
938void emu_ResetGame(void)\r
939{\r
940 PicoReset(0);\r
941 reset_timing = 1;\r
942}\r
943\r
944\r
PicoDrive's frontend in a lib