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[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
0ae25549 24#include "../common/config.h"\r
720ee7f6 25#include "cpuctrl.h"\r
26\r
70d2ecc5 27#include <Pico/PicoInt.h>\r
28#include <Pico/Patch.h>\r
0480e6c9 29#include <Pico/sound/mix.h>\r
70d2ecc5 30#include <zlib/zlib.h>\r
720ee7f6 31\r
4327ec37 32//#define PFRAMES\r
720ee7f6 33\r
34#ifdef BENCHMARK\r
35#define OSD_FPS_X 220\r
36#else\r
37#define OSD_FPS_X 260\r
38#endif\r
39\r
720ee7f6 40\r
41int engineState;\r
42int select_exits = 0;\r
720ee7f6 43\r
44char romFileName[PATH_MAX];\r
720ee7f6 45\r
46extern int crashed_940;\r
47\r
6245d5a0 48static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
720ee7f6 49static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
8f1b51ef 50static int osd_fps_x;\r
720ee7f6 51static int gp2x_old_gamma = 100;\r
f013066e 52char noticeMsg[64]; // notice msg to draw\r
c7a4ff64 53unsigned char *PicoDraw2FB = NULL; // temporary buffer for alt renderer\r
8f1b51ef 54int reset_timing = 0;\r
720ee7f6 55\r
2b395ee0 56#define PICO_PEN_ADJUST_X 4\r
57#define PICO_PEN_ADJUST_Y 2\r
8a091e48 58static int pico_pen_x = 320/2, pico_pen_y = 240/2;\r
e1cd546f 59\r
f013066e 60static void emu_msg_cb(const char *msg);\r
61static void emu_msg_tray_open(void);\r
720ee7f6 62\r
720ee7f6 63\r
f013066e 64void emu_noticeMsgUpdated(void)\r
720ee7f6 65{\r
f013066e 66 gettimeofday(&noticeMsgTime, 0);\r
720ee7f6 67}\r
68\r
f013066e 69void emu_getMainDir(char *dst, int len)\r
25fced50 70{\r
f013066e 71 extern char **g_argv;\r
72 int j;\r
25fced50 73\r
f013066e 74 strncpy(dst, g_argv[0], len);\r
75 len -= 32; // reserve\r
76 if (len < 0) len = 0;\r
77 dst[len] = 0;\r
78 for (j = strlen(dst); j > 0; j--)\r
79 if (dst[j] == '/') { dst[j+1] = 0; break; }\r
25fced50 80}\r
81\r
720ee7f6 82void emu_Init(void)\r
83{\r
84 // make temp buffer for alt renderer\r
c7a4ff64 85 PicoDraw2FB = malloc((8+320)*(8+240+8));\r
86 if (!PicoDraw2FB)\r
720ee7f6 87 {\r
c7a4ff64 88 printf("PicoDraw2FB == 0\n");\r
720ee7f6 89 }\r
90\r
4ffd2858 91 // make dirs for saves, cfgs, etc.\r
92 mkdir("mds", 0777);\r
93 mkdir("srm", 0777);\r
94 mkdir("brm", 0777);\r
95 mkdir("cfg", 0777);\r
96\r
720ee7f6 97 PicoInit();\r
dfa4c846 98 PicoMessage = emu_msg_cb;\r
5e2e14f2 99 PicoMCDopenTray = emu_msg_tray_open;\r
100 PicoMCDcloseTray = menu_loop_tray;\r
720ee7f6 101}\r
102\r
103\r
f013066e 104static void scaling_update(void)\r
79cad122 105{\r
106 PicoOpt &= ~0x4100;\r
107 switch (currentConfig.scaling) {\r
108 default: break; // off\r
109 case 1: // hw hor\r
110 case 2: PicoOpt |= 0x0100; break; // hw hor+vert\r
111 case 3: PicoOpt |= 0x4000; break; // sw hor\r
112 }\r
113}\r
114\r
115\r
720ee7f6 116void emu_Deinit(void)\r
117{\r
118 // save SRAM\r
119 if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
120 emu_SaveLoadGame(0, 1);\r
121 SRam.changed = 0;\r
122 }\r
123\r
79cad122 124 if (!(currentConfig.EmuOpt & 0x20)) {\r
0ae25549 125 config_writelrom(PicoConfigFile);\r
79cad122 126#ifndef NO_SYNC\r
0ae25549 127 sync();\r
79cad122 128#endif\r
79cad122 129 }\r
130\r
c7a4ff64 131 free(PicoDraw2FB);\r
720ee7f6 132\r
133 PicoExit();\r
720ee7f6 134\r
135 // restore gamma\r
136 if (gp2x_old_gamma != 100)\r
55a951dd 137 set_gamma(100, 0);\r
720ee7f6 138}\r
139\r
0ae25549 140void emu_prepareDefaultConfig(void)\r
141{\r
142 memset(&defaultConfig, 0, sizeof(defaultConfig));\r
100ae778 143 defaultConfig.EmuOpt = 0x9d | 0x00700; // | <- ram_tmng, confirm_save, cd_leds\r
84e21f25 144 defaultConfig.s_PicoOpt = 0x0f | POPT_EXT_FM|POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC|POPT_ACC_SPRITES;\r
0ae25549 145 defaultConfig.s_PsndRate = 44100;\r
146 defaultConfig.s_PicoRegion = 0; // auto\r
147 defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
88bfc63d 148 defaultConfig.s_PicoCDBuffers = 0;\r
0ae25549 149 defaultConfig.Frameskip = -1; // auto\r
150 defaultConfig.CPUclock = 200;\r
151 defaultConfig.volume = 50;\r
152 defaultConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
153 defaultConfig.KeyBinds[ 4] = 1<<1;\r
154 defaultConfig.KeyBinds[ 2] = 1<<2;\r
155 defaultConfig.KeyBinds[ 6] = 1<<3;\r
156 defaultConfig.KeyBinds[14] = 1<<4;\r
157 defaultConfig.KeyBinds[13] = 1<<5;\r
158 defaultConfig.KeyBinds[12] = 1<<6;\r
159 defaultConfig.KeyBinds[ 8] = 1<<7;\r
160 defaultConfig.KeyBinds[15] = 1<<26; // switch rend\r
161 defaultConfig.KeyBinds[10] = 1<<27; // save state\r
162 defaultConfig.KeyBinds[11] = 1<<28; // load state\r
163 defaultConfig.KeyBinds[23] = 1<<29; // vol up\r
164 defaultConfig.KeyBinds[22] = 1<<30; // vol down\r
165 defaultConfig.gamma = 100;\r
166 defaultConfig.scaling = 0;\r
167}\r
168\r
f013066e 169void emu_setDefaultConfig(void)\r
170{\r
0ae25549 171 memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));\r
172 PicoOpt = currentConfig.s_PicoOpt;\r
173 PsndRate = currentConfig.s_PsndRate;\r
174 PicoRegionOverride = currentConfig.s_PicoRegion;\r
175 PicoAutoRgnOrder = currentConfig.s_PicoAutoRgnOrder;\r
176 PicoCDBuffers = currentConfig.s_PicoCDBuffers;\r
13059a60 177}\r
178\r
0805b5b4 179void osd_text(int x, int y, const char *text)\r
720ee7f6 180{\r
181 int len = strlen(text)*8;\r
182\r
183 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
daf91588 184 int *p, i, h;\r
720ee7f6 185 x &= ~3; // align x\r
186 len = (len+3) >> 2;\r
187 for (h = 0; h < 8; h++) {\r
188 p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
daf91588 189 for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
720ee7f6 190 }\r
f013066e 191 emu_textOut8(x, y, text);\r
720ee7f6 192 } else {\r
193 int *p, i, h;\r
194 x &= ~1; // align x\r
195 len = (len+1) >> 1;\r
196 for (h = 0; h < 8; h++) {\r
197 p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
198 for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
199 }\r
f013066e 200 emu_textOut16(x, y, text);\r
720ee7f6 201 }\r
202}\r
203\r
2b395ee0 204static void draw_cd_leds(void)\r
daf91588 205{\r
8dfb9fd5 206// static\r
207 int old_reg;\r
8ede36b9 208// if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
daf91588 209 old_reg = Pico_mcd->s68k_regs[0];\r
210\r
211 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
212 // 8-bit modes\r
213 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
214 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
49fe50f0 215 *(unsigned int *)((char *)gp2x_screen + 320*2+ 4) =\r
216 *(unsigned int *)((char *)gp2x_screen + 320*3+ 4) =\r
217 *(unsigned int *)((char *)gp2x_screen + 320*4+ 4) = col_g;\r
218 *(unsigned int *)((char *)gp2x_screen + 320*2+12) =\r
219 *(unsigned int *)((char *)gp2x_screen + 320*3+12) =\r
220 *(unsigned int *)((char *)gp2x_screen + 320*4+12) = col_r;\r
daf91588 221 } else {\r
222 // 16-bit modes\r
49fe50f0 223 unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+4);\r
daf91588 224 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
225 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
49fe50f0 226 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
227 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
8ede36b9 228 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
daf91588 229 }\r
230}\r
231\r
2b395ee0 232static void draw_pico_ptr(void)\r
233{\r
234 unsigned short *p = (unsigned short *)gp2x_screen;\r
235\r
236 // only if pen enabled and for 16bit modes\r
237 if (pico_inp_mode == 0 || (PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) return;\r
238\r
239 if (!(Pico.video.reg[12]&1) && !(PicoOpt&POPT_DIS_32C_BORDER))\r
240 p += 32;\r
241\r
242 p += 320 * (pico_pen_y + PICO_PEN_ADJUST_Y);\r
243 p += pico_pen_x + PICO_PEN_ADJUST_X;\r
244 p[0] ^= 0xffff;\r
245 p[319] ^= 0xffff;\r
246 p[320] ^= 0xffff;\r
247 p[321] ^= 0xffff;\r
248 p[640] ^= 0xffff;\r
249}\r
250\r
dd5fd477 251static int EmuScanBegin16(unsigned int num)\r
720ee7f6 252{\r
253 if (!(Pico.video.reg[1]&8)) num += 8;\r
dd5fd477 254 DrawLineDest = (unsigned short *) gp2x_screen + 320 * num;\r
720ee7f6 255\r
256 return 0;\r
257}\r
258\r
dd5fd477 259static int EmuScanBegin8(unsigned int num)\r
720ee7f6 260{\r
261 if (!(Pico.video.reg[1]&8)) num += 8;\r
dd5fd477 262 DrawLineDest = (unsigned char *) gp2x_screen + 320 * num;\r
720ee7f6 263\r
264 return 0;\r
265}\r
266\r
e5d315a5 267int localPal[0x100];\r
720ee7f6 268static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
269\r
0805b5b4 270static void blit(const char *fps, const char *notice)\r
720ee7f6 271{\r
daf91588 272 int emu_opt = currentConfig.EmuOpt;\r
273\r
b3818d1e 274 if (PicoOpt&0x10)\r
275 {\r
720ee7f6 276 // 8bit fast renderer\r
277 if (Pico.m.dirtyPal) {\r
278 Pico.m.dirtyPal = 0;\r
279 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
280 // feed new palette to our device\r
281 gp2x_video_setpalette(localPal, 0x40);\r
282 }\r
b3818d1e 283 // a hack for VR\r
284 if (PicoRead16Hook == PicoSVPRead16)\r
285 memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);\r
286 // do actual copy\r
c7a4ff64 287 vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
b3818d1e 288 }\r
289 else if (!(emu_opt&0x80))\r
290 {\r
720ee7f6 291 // 8bit accurate renderer\r
dd5fd477 292 if (Pico.m.dirtyPal)\r
293 {\r
b13a934c 294 int pallen = 0x40;\r
720ee7f6 295 Pico.m.dirtyPal = 0;\r
b13a934c 296 if (Pico.video.reg[0xC]&8) // shadow/hilight mode\r
297 {\r
720ee7f6 298 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
299 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
300 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
67dfdf5f 301 memcpy32(localPal+0xc0, localPal+0x40, 0x40);\r
b13a934c 302 pallen = 0x100;\r
303 }\r
304 else if (rendstatus & PDRAW_ACC_SPRITES) {\r
305 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
306 memcpy32(localPal+0x40, localPal, 0x40);\r
307 memcpy32(localPal+0x80, localPal, 0x40);\r
308 memcpy32(localPal+0xc0, localPal, 0x40);\r
309 pallen = 0x100;\r
310 }\r
311 else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes\r
720ee7f6 312 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
313 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
314 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
b13a934c 315 pallen = 0xc0;\r
316 }\r
317 else {\r
720ee7f6 318 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
720ee7f6 319 }\r
b13a934c 320 if (pallen > 0xc0) {\r
321 localPal[0xc0] = 0x0000c000;\r
322 localPal[0xd0] = 0x00c00000;\r
323 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
324 localPal[0xf0] = 0x00ffffff;\r
325 }\r
326 gp2x_video_setpalette(localPal, pallen);\r
720ee7f6 327 }\r
328 }\r
329\r
79cad122 330 if (notice || (emu_opt & 2)) {\r
331 int h = 232;\r
332 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 8;\r
333 if (notice) osd_text(4, h, notice);\r
334 if (emu_opt & 2)\r
335 osd_text(osd_fps_x, h, fps);\r
336 }\r
dd5fd477 337 if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))\r
2b395ee0 338 draw_cd_leds();\r
339 if (PicoAHW & PAHW_PICO)\r
340 draw_pico_ptr();\r
720ee7f6 341\r
342 //gp2x_video_wait_vsync();\r
343 gp2x_video_flip();\r
344\r
345 if (!(PicoOpt&0x10)) {\r
346 if (!(Pico.video.reg[1]&8)) {\r
347 if (currentConfig.EmuOpt&0x80) {\r
348 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
349 } else {\r
350 DrawLineDest = (unsigned char *) gp2x_screen + 320*8;\r
351 }\r
352 } else {\r
353 DrawLineDest = gp2x_screen;\r
354 }\r
355 }\r
356}\r
357\r
358\r
359// clears whole screen or just the notice area (in all buffers)\r
360static void clearArea(int full)\r
361{\r
daf91588 362 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
363 // 8-bit renderers\r
364 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
365 else gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
366 } else {\r
720ee7f6 367 // 16bit accurate renderer\r
368 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
369 else gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
720ee7f6 370 }\r
371}\r
372\r
373\r
374static void vidResetMode(void)\r
375{\r
376 if (PicoOpt&0x10) {\r
720ee7f6 377 gp2x_video_changemode(8);\r
720ee7f6 378 } else if (currentConfig.EmuOpt&0x80) {\r
13059a60 379 gp2x_video_changemode(16);\r
720ee7f6 380 PicoDrawSetColorFormat(1);\r
dd5fd477 381 PicoScanBegin = EmuScanBegin16;\r
720ee7f6 382 } else {\r
daf91588 383 gp2x_video_changemode(8);\r
384 PicoDrawSetColorFormat(2);\r
dd5fd477 385 PicoScanBegin = EmuScanBegin8;\r
daf91588 386 }\r
387 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
388 // setup pal for 8-bit modes\r
389 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
390 localPal[0xd0] = 0x00c00000;\r
720ee7f6 391 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
392 localPal[0xf0] = 0x00ffffff;\r
720ee7f6 393 gp2x_video_setpalette(localPal, 0x100);\r
394 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
395 gp2x_video_flip();\r
720ee7f6 396 }\r
397 Pico.m.dirtyPal = 1;\r
398 // reset scaling\r
79cad122 399 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
400 gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
401 else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
720ee7f6 402}\r
403\r
404\r
dfa4c846 405static void emu_msg_cb(const char *msg)\r
406{\r
407 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
408 // 8-bit renderers\r
409 gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
410 osd_text(4, 232, msg);\r
411 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232, 320*232, 320*8);\r
412 } else {\r
413 // 16bit accurate renderer\r
414 gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
415 osd_text(4, 232, msg);\r
416 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232*2, 320*232*2, 320*8*2);\r
417 }\r
418 gettimeofday(&noticeMsgTime, 0);\r
419 noticeMsgTime.tv_sec -= 2;\r
e5589947 420\r
421 /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
422 reset_timing = 1;\r
dfa4c846 423}\r
424\r
1078e544 425static void emu_state_cb(const char *str)\r
426{\r
427 clearArea(0);\r
428 blit("", str);\r
429}\r
430\r
5e2e14f2 431static void emu_msg_tray_open(void)\r
432{\r
433 strcpy(noticeMsg, "CD tray opened");\r
434 gettimeofday(&noticeMsgTime, 0);\r
435}\r
436\r
e1cd546f 437static void RunEventsPico(unsigned int events, unsigned int gp2x_keys)\r
438{\r
3f2aaff2 439 int ret, px, py;\r
440 static int pdown_frames = 0;\r
441\r
8a091e48 442 emu_RunEventsPico(events);\r
443\r
444 if (pico_inp_mode != 0)\r
445 {\r
e1cd546f 446 PicoPad[0] &= ~0x0f; // release UDLR\r
3f2aaff2 447 if (gp2x_keys & GP2X_UP) { pico_pen_y--; if (pico_pen_y < 8) pico_pen_y = 8; }\r
448 if (gp2x_keys & GP2X_DOWN) { pico_pen_y++; if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y; }\r
2b395ee0 449 if (gp2x_keys & GP2X_LEFT) { pico_pen_x--; if (pico_pen_x < 0) pico_pen_x = 0; }\r
450 if (gp2x_keys & GP2X_RIGHT) {\r
451 int lim = (Pico.video.reg[12]&1) ? 319 : 255;\r
452 pico_pen_x++;\r
453 if (pico_pen_x > lim-PICO_PEN_ADJUST_X)\r
454 pico_pen_x = lim-PICO_PEN_ADJUST_X;\r
455 }\r
456 PicoPicohw.pen_pos[0] = pico_pen_x;\r
457 if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;\r
458 PicoPicohw.pen_pos[0] += 0x3c;\r
e10925be 459 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
e1cd546f 460 }\r
3f2aaff2 461\r
462 // for F200\r
463 ret = gp2x_touchpad_read(&px, &py);\r
464 if (ret >= 0) {\r
465 if (ret > 5000) {\r
466 if (pdown_frames++ > 5)\r
467 PicoPad[0] |= 0x20;\r
468\r
469 pico_pen_x = px;\r
470 pico_pen_y = py;\r
471 if (!(Pico.video.reg[12]&1)) {\r
472 pico_pen_x -= 32;\r
473 if (pico_pen_x < 0) pico_pen_x = 0;\r
474 if (pico_pen_x > 248) pico_pen_x = 248;\r
475 }\r
476 if (pico_pen_y > 224) pico_pen_y = 224;\r
477 }\r
478 else\r
479 pdown_frames= 0;\r
480\r
481 //if (ret == 0)\r
482 // PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
483 }\r
e1cd546f 484}\r
485\r
0480e6c9 486static void update_volume(int has_changed, int is_up)\r
487{\r
488 static int prev_frame = 0, wait_frames = 0;\r
489 int vol = currentConfig.volume;\r
490\r
491 if (has_changed)\r
492 {\r
493 if (vol < 5 && (PicoOpt&8) && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
494 wait_frames++;\r
495 else {\r
496 if (is_up) {\r
497 if (vol < 99) vol++;\r
498 } else {\r
499 if (vol > 0) vol--;\r
500 }\r
501 wait_frames = 0;\r
502 gp2x_sound_volume(vol, vol);\r
503 currentConfig.volume = vol;\r
504 }\r
505 sprintf(noticeMsg, "VOL: %02i", vol);\r
506 gettimeofday(&noticeMsgTime, 0);\r
507 prev_frame = Pico.m.frame_count;\r
508 }\r
509\r
510 // set the right mixer func\r
511 if (!(PicoOpt&8)) return; // just use defaults for mono\r
512 if (vol >= 5)\r
513 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
514 else {\r
515 mix_32_to_16l_level = 5 - vol;\r
516 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
517 }\r
518}\r
519\r
720ee7f6 520static void RunEvents(unsigned int which)\r
521{\r
0480e6c9 522 if (which & 0x1800) // save or load (but not both)\r
523 {\r
720ee7f6 524 int do_it = 1;\r
f013066e 525 if ( emu_checkSaveFile(state_slot) &&\r
46ede6a6 526 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load\r
527 (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
720ee7f6 528 unsigned long keys;\r
46ede6a6 529 blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
30d5518a 530 while ( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
720ee7f6 531 usleep(50*1024);\r
532 if (keys & GP2X_X) do_it = 0;\r
30d5518a 533 while ( gp2x_joystick_read(1) & (GP2X_X|GP2X_Y) ) // wait for release\r
534 usleep(50*1024);\r
720ee7f6 535 clearArea(0);\r
536 }\r
537 if (do_it) {\r
0805b5b4 538 osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
1078e544 539 PicoStateProgressCB = emu_state_cb;\r
540 gp2x_memcpy_all_buffers(gp2x_screen, 0, 320*240*2);\r
0805b5b4 541 emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
1078e544 542 PicoStateProgressCB = NULL;\r
720ee7f6 543 }\r
544\r
545 reset_timing = 1;\r
546 }\r
0480e6c9 547 if (which & 0x0400) // switch renderer\r
548 {\r
720ee7f6 549 if ( PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
550 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
551 else currentConfig.EmuOpt &= ~0x80;\r
552\r
553 vidResetMode();\r
554\r
555 if (PicoOpt&0x10) {\r
556 strcpy(noticeMsg, " 8bit fast renderer");\r
557 } else if (currentConfig.EmuOpt&0x80) {\r
558 strcpy(noticeMsg, "16bit accurate renderer");\r
559 } else {\r
560 strcpy(noticeMsg, " 8bit accurate renderer");\r
561 }\r
562\r
563 gettimeofday(&noticeMsgTime, 0);\r
564 }\r
0480e6c9 565 if (which & 0x0300)\r
566 {\r
720ee7f6 567 if(which&0x0200) {\r
568 state_slot -= 1;\r
569 if(state_slot < 0) state_slot = 9;\r
570 } else {\r
571 state_slot += 1;\r
572 if(state_slot > 9) state_slot = 0;\r
573 }\r
f013066e 574 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
720ee7f6 575 gettimeofday(&noticeMsgTime, 0);\r
576 }\r
0480e6c9 577 if (which & 0x0080) {\r
720ee7f6 578 engineState = PGS_Menu;\r
579 }\r
580}\r
581\r
720ee7f6 582static void updateKeys(void)\r
583{\r
e1cd546f 584 unsigned int keys, keys2, allActions[2] = { 0, 0 }, events;\r
585 static unsigned int prevEvents = 0;\r
720ee7f6 586 int joy, i;\r
587\r
588 keys = gp2x_joystick_read(0);\r
589 if (keys & GP2X_SELECT) {\r
590 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
591 // wait until select is released, so menu would not resume game\r
592 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
593 }\r
594\r
595 keys &= CONFIGURABLE_KEYS;\r
e1cd546f 596 keys2 = keys;\r
720ee7f6 597\r
598 for (i = 0; i < 32; i++)\r
599 {\r
e1cd546f 600 if (keys2 & (1 << i))\r
8e708f92 601 {\r
720ee7f6 602 int pl, acts = currentConfig.KeyBinds[i];\r
603 if (!acts) continue;\r
604 pl = (acts >> 16) & 1;\r
8e708f92 605 if (kb_combo_keys & (1 << i))\r
606 {\r
450dab6f 607 int u = i+1, acts_c = acts & kb_combo_acts;\r
720ee7f6 608 // let's try to find the other one\r
8e708f92 609 if (acts_c) {\r
450dab6f 610 for (; u < 32; u++)\r
e1cd546f 611 if ( (keys2 & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {\r
8e708f92 612 allActions[pl] |= acts_c & currentConfig.KeyBinds[u];\r
e1cd546f 613 keys2 &= ~((1 << i) | (1 << u));\r
720ee7f6 614 break;\r
615 }\r
8e708f92 616 }\r
720ee7f6 617 // add non-combo actions if combo ones were not found\r
618 if (!acts_c || u == 32)\r
8e708f92 619 allActions[pl] |= acts & ~kb_combo_acts;\r
720ee7f6 620 } else {\r
621 allActions[pl] |= acts;\r
622 }\r
623 }\r
624 }\r
625\r
626 // add joy inputs\r
627 if (num_of_joys > 0)\r
628 {\r
629 gp2x_usbjoy_update();\r
630 for (joy = 0; joy < num_of_joys; joy++) {\r
e1cd546f 631 int btns = gp2x_usbjoy_check2(joy);\r
720ee7f6 632 for (i = 0; i < 32; i++) {\r
e1cd546f 633 if (btns & (1 << i)) {\r
720ee7f6 634 int acts = currentConfig.JoyBinds[joy][i];\r
635 int pl = (acts >> 16) & 1;\r
636 allActions[pl] |= acts;\r
637 }\r
638 }\r
639 }\r
640 }\r
641\r
25fced50 642 PicoPad[0] = (unsigned short) allActions[0];\r
643 PicoPad[1] = (unsigned short) allActions[1];\r
720ee7f6 644\r
645 events = (allActions[0] | allActions[1]) >> 16;\r
646\r
647 // volume is treated in special way and triggered every frame\r
0480e6c9 648 if (events & 0x6000)\r
649 update_volume(1, events & 0x2000);\r
650\r
8a091e48 651 if ((events ^ prevEvents) & 0x40) {\r
652 emu_changeFastForward(events & 0x40);\r
653 update_volume(0, 0);\r
654 reset_timing = 1;\r
655 }\r
720ee7f6 656\r
657 events &= ~prevEvents;\r
e1cd546f 658\r
659 if (PicoAHW == PAHW_PICO)\r
660 RunEventsPico(events, keys);\r
720ee7f6 661 if (events) RunEvents(events);\r
f013066e 662 if (movie_data) emu_updateMovie();\r
720ee7f6 663\r
664 prevEvents = (allActions[0] | allActions[1]) >> 16;\r
665}\r
666\r
720ee7f6 667\r
3ef975c9 668static void updateSound(int len)\r
720ee7f6 669{\r
3ef975c9 670 if (PicoOpt&8) len<<=1;\r
720ee7f6 671\r
d9a18943 672 /* avoid writing audio when lagging behind to prevent audio lag */\r
673 if (PicoSkipFrame != 2)\r
674 gp2x_sound_write(PsndOut, len<<1);\r
720ee7f6 675}\r
676\r
677\r
d9a18943 678static void SkipFrame(int do_audio)\r
720ee7f6 679{\r
d9a18943 680 PicoSkipFrame=do_audio ? 1 : 2;\r
720ee7f6 681 PicoFrame();\r
682 PicoSkipFrame=0;\r
720ee7f6 683}\r
684\r
685\r
84e21f25 686void emu_forcedFrame(int opts)\r
4ffd2858 687{\r
688 int po_old = PicoOpt;\r
13059a60 689 int eo_old = currentConfig.EmuOpt;\r
690\r
84e21f25 691 PicoOpt &= ~0x10;\r
692 PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
13059a60 693 currentConfig.EmuOpt |= 0x80;\r
4ffd2858 694\r
13059a60 695 //vidResetMode();\r
696 PicoDrawSetColorFormat(1);\r
dd5fd477 697 PicoScanBegin = EmuScanBegin16;\r
13059a60 698 Pico.m.dirtyPal = 1;\r
699 PicoFrameDrawOnly();\r
4ffd2858 700\r
13059a60 701/*\r
4ffd2858 702 if (!(Pico.video.reg[12]&1)) {\r
dccc2bd0 703 vidCpyM2 = vidCpyM2_32col;\r
4ffd2858 704 clearArea(1);\r
dccc2bd0 705 } else vidCpyM2 = vidCpyM2_40col;\r
4ffd2858 706\r
c7a4ff64 707 vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
4ffd2858 708 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
709 gp2x_video_setpalette(localPal, 0x40);\r
13059a60 710*/\r
e1aa0fa7 711 PicoOpt = po_old;\r
13059a60 712 currentConfig.EmuOpt = eo_old;\r
4ffd2858 713}\r
714\r
720ee7f6 715static void simpleWait(int thissec, int lim_time)\r
716{\r
717 struct timeval tval;\r
718\r
719 spend_cycles(1024);\r
720 gettimeofday(&tval, 0);\r
450dab6f 721 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
720ee7f6 722\r
450dab6f 723 while (tval.tv_usec < lim_time)\r
720ee7f6 724 {\r
725 spend_cycles(1024);\r
726 gettimeofday(&tval, 0);\r
450dab6f 727 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
720ee7f6 728 }\r
729}\r
730\r
731\r
450dab6f 732#if 0\r
733static void tga_dump(void)\r
734{\r
735#define BYTE unsigned char\r
736#define WORD unsigned short\r
737 struct\r
738 {\r
739 BYTE IDLength; /* 00h Size of Image ID field */\r
740 BYTE ColorMapType; /* 01h Color map type */\r
741 BYTE ImageType; /* 02h Image type code */\r
742 WORD CMapStart; /* 03h Color map origin */\r
743 WORD CMapLength; /* 05h Color map length */\r
744 BYTE CMapDepth; /* 07h Depth of color map entries */\r
745 WORD XOffset; /* 08h X origin of image */\r
746 WORD YOffset; /* 0Ah Y origin of image */\r
747 WORD Width; /* 0Ch Width of image */\r
748 WORD Height; /* 0Eh Height of image */\r
749 BYTE PixelDepth; /* 10h Image pixel size */\r
750 BYTE ImageDescriptor; /* 11h Image descriptor byte */\r
751 } __attribute__((packed)) TGAHEAD;\r
752 static unsigned short oldscr[320*240];\r
753 FILE *f; char name[128]; int i;\r
754\r
755 memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
756 TGAHEAD.ImageType = 2;\r
757 TGAHEAD.Width = 320;\r
758 TGAHEAD.Height = 240;\r
759 TGAHEAD.PixelDepth = 16;\r
760 TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
761\r
762#define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
763\r
764 for (i = 0; i < 320*240; i++)\r
765 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
766 if (i < 320*240)\r
767 {\r
768 for (i = 0; i < 320*240; i++)\r
769 oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
770 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
771 f = fopen(name, "wb");\r
772 if (!f) { printf("!f\n"); exit(1); }\r
773 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
774 fwrite(oldscr, 1, 320*240*2, f);\r
775 fclose(f);\r
776 }\r
777}\r
778#endif\r
779\r
780\r
720ee7f6 781void emu_Loop(void)\r
782{\r
783 static int gp2x_old_clock = 200;\r
65345ecc 784 static int PsndRate_old = 0, PicoOpt_old = 0, EmuOpt_old = 0, pal_old = 0;\r
720ee7f6 785 char fpsbuff[24]; // fps count c string\r
786 struct timeval tval; // timing\r
450dab6f 787 int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
788 int frames_done, frames_shown, thissec; // actual frames\r
789 int oldmodes = 0, target_fps, target_frametime, lim_time, vsync_offset, i;\r
720ee7f6 790 char *notice = 0;\r
791\r
792 printf("entered emu_Loop()\n");\r
793\r
794 if (gp2x_old_clock != currentConfig.CPUclock) {\r
795 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
796 set_FCLK(currentConfig.CPUclock);\r
797 gp2x_old_clock = currentConfig.CPUclock;\r
798 printf(" done\n");\r
799 }\r
800\r
55a951dd 801 if (gp2x_old_gamma != currentConfig.gamma || (EmuOpt_old&0x1000) != (currentConfig.EmuOpt&0x1000)) {\r
802 set_gamma(currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
720ee7f6 803 gp2x_old_gamma = currentConfig.gamma;\r
55a951dd 804 printf("updated gamma to %i, A_SN's curve: %i\n", currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
720ee7f6 805 }\r
806\r
59d0f042 807 if ((EmuOpt_old&0x2000) != (currentConfig.EmuOpt&0x2000)) {\r
808 if (currentConfig.EmuOpt&0x2000)\r
809 set_LCD_custom_rate(Pico.m.pal ? LCDR_100 : LCDR_120);\r
810 else unset_LCD_custom_rate();\r
811 }\r
812\r
813 EmuOpt_old = currentConfig.EmuOpt;\r
720ee7f6 814 fpsbuff[0] = 0;\r
815\r
816 // make sure we are in correct mode\r
817 vidResetMode();\r
f013066e 818 scaling_update();\r
e5d315a5 819 Pico.m.dirtyPal = 1;\r
720ee7f6 820 oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
8e708f92 821 emu_findKeyBindCombos();\r
720ee7f6 822\r
823 // pal/ntsc might have changed, reset related stuff\r
824 target_fps = Pico.m.pal ? 50 : 60;\r
825 target_frametime = 1000000/target_fps;\r
826 reset_timing = 1;\r
827\r
828 // prepare sound stuff\r
0480e6c9 829 if (currentConfig.EmuOpt & 4)\r
830 {\r
3ef975c9 831 int snd_excess_add;\r
4327ec37 832 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old ||\r
833 ((PicoOpt&0x200) && crashed_940)) {\r
c4f2f371 834 PsndRerate(Pico.m.frame_count ? 1 : 0);\r
720ee7f6 835 }\r
720ee7f6 836 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
4327ec37 837 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
838 PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
720ee7f6 839 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
840 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
841 PicoWriteSound = updateSound;\r
0480e6c9 842 update_volume(0, 0);\r
3ef975c9 843 memset(sndBuffer, 0, sizeof(sndBuffer));\r
844 PsndOut = sndBuffer;\r
720ee7f6 845 PsndRate_old = PsndRate;\r
720ee7f6 846 PicoOpt_old = PicoOpt;\r
847 pal_old = Pico.m.pal;\r
848 } else {\r
0480e6c9 849 PsndOut = NULL;\r
720ee7f6 850 }\r
851\r
5f9922e6 852 // prepare CD buffer\r
dd5fd477 853 if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r
5f9922e6 854\r
59d0f042 855 // calc vsync offset to sync timing code with vsync\r
856 if (currentConfig.EmuOpt&0x2000) {\r
857 gettimeofday(&tval, 0);\r
858 gp2x_video_wait_vsync();\r
859 gettimeofday(&tval, 0);\r
860 vsync_offset = tval.tv_usec;\r
861 while (vsync_offset >= target_frametime)\r
862 vsync_offset -= target_frametime;\r
863 if (!vsync_offset) vsync_offset++;\r
864 printf("vsync_offset: %i\n", vsync_offset);\r
865 } else\r
866 vsync_offset = 0;\r
867\r
450dab6f 868 frames_done = frames_shown = thissec =\r
869 pframes_done = pframes_shown = pthissec = 0;\r
870\r
871 // loop\r
720ee7f6 872 while (engineState == PGS_Running)\r
873 {\r
874 int modes;\r
875\r
876 gettimeofday(&tval, 0);\r
0480e6c9 877 if (reset_timing) {\r
720ee7f6 878 reset_timing = 0;\r
450dab6f 879 pthissec = tval.tv_sec;\r
880 pframes_shown = pframes_done = tval.tv_usec/target_frametime;\r
720ee7f6 881 }\r
882\r
883 // show notice message?\r
0480e6c9 884 if (noticeMsgTime.tv_sec)\r
885 {\r
720ee7f6 886 static int noticeMsgSum;\r
887 if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
888 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
889 clearArea(0);\r
890 notice = 0;\r
891 } else {\r
892 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
893 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
894 notice = noticeMsg;\r
895 }\r
896 }\r
897\r
898 // check for mode changes\r
899 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
0480e6c9 900 if (modes != oldmodes)\r
901 {\r
720ee7f6 902 int scalex = 320;\r
903 osd_fps_x = OSD_FPS_X;\r
904 if (modes & 4) {\r
905 vidCpyM2 = vidCpyM2_40col;\r
906 } else {\r
907 if (PicoOpt & 0x100) {\r
908 vidCpyM2 = vidCpyM2_32col_nobord;\r
909 scalex = 256;\r
910 osd_fps_x = OSD_FPS_X - 64;\r
911 } else {\r
912 vidCpyM2 = vidCpyM2_32col;\r
913 }\r
914 }\r
79cad122 915 if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
916 gp2x_video_RGB_setscaling(8, scalex, 224);\r
917 else gp2x_video_RGB_setscaling(0, scalex, 240);\r
720ee7f6 918 oldmodes = modes;\r
919 clearArea(1);\r
920 }\r
921\r
922 // second changed?\r
0480e6c9 923 if (thissec != tval.tv_sec)\r
924 {\r
720ee7f6 925#ifdef BENCHMARK\r
926 static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
0480e6c9 927 if (++bench == 10) {\r
720ee7f6 928 bench = 0;\r
929 bench_fps_s = bench_fps;\r
930 bf[bfp++ & 3] = bench_fps;\r
931 bench_fps = 0;\r
932 }\r
933 bench_fps += frames_shown;\r
934 sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
935#else\r
55c7b464 936 if (currentConfig.EmuOpt & 2) {\r
720ee7f6 937 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
55c7b464 938 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
939 }\r
720ee7f6 940#endif\r
450dab6f 941 frames_shown = frames_done = 0;\r
720ee7f6 942 thissec = tval.tv_sec;\r
450dab6f 943 }\r
944#ifdef PFRAMES\r
945 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
946#endif\r
720ee7f6 947\r
450dab6f 948 if (pthissec != tval.tv_sec)\r
949 {\r
0480e6c9 950 if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
450dab6f 951 pframes_done = pframes_shown = 0;\r
720ee7f6 952 } else {\r
953 // it is quite common for this implementation to leave 1 fame unfinished\r
954 // when second changes, but we don't want buffer to starve.\r
450dab6f 955 if(PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {\r
720ee7f6 956 updateKeys();\r
450dab6f 957 SkipFrame(1); pframes_done++;\r
720ee7f6 958 }\r
959\r
450dab6f 960 pframes_done -= target_fps; if (pframes_done < 0) pframes_done = 0;\r
961 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;\r
962 if (pframes_shown > pframes_done) pframes_shown = pframes_done;\r
720ee7f6 963 }\r
450dab6f 964 pthissec = tval.tv_sec;\r
720ee7f6 965 }\r
59d0f042 966\r
450dab6f 967 lim_time = (pframes_done+1) * target_frametime + vsync_offset;\r
968 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
969 {\r
720ee7f6 970 for(i = 0; i < currentConfig.Frameskip; i++) {\r
971 updateKeys();\r
450dab6f 972 SkipFrame(1); pframes_done++; frames_done++;\r
0480e6c9 973 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
720ee7f6 974 gettimeofday(&tval, 0);\r
450dab6f 975 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
976 if (tval.tv_usec < lim_time) { // we are too fast\r
977 simpleWait(pthissec, lim_time);\r
720ee7f6 978 }\r
979 }\r
980 lim_time += target_frametime;\r
981 }\r
450dab6f 982 }\r
983 else if (tval.tv_usec > lim_time) // auto frameskip\r
984 {\r
720ee7f6 985 // no time left for this frame - skip\r
f013066e 986 if (tval.tv_usec - lim_time >= 300000) {\r
d032c15a 987 /* something caused a slowdown for us (disk access? cache flush?)\r
988 * try to recover by resetting timing... */\r
989 reset_timing = 1;\r
990 continue;\r
991 }\r
720ee7f6 992 updateKeys();\r
450dab6f 993 SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;\r
720ee7f6 994 continue;\r
995 }\r
996\r
997 updateKeys();\r
998 PicoFrame();\r
999\r
1000 // check time\r
1001 gettimeofday(&tval, 0);\r
450dab6f 1002 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
720ee7f6 1003\r
f013066e 1004 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
d032c15a 1005 reset_timing = 1;\r
1006 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
720ee7f6 1007 {\r
59d0f042 1008 // sleep or vsync if we are still too fast\r
720ee7f6 1009 // usleep sleeps for ~20ms minimum, so it is not a solution here\r
0480e6c9 1010 if (!reset_timing && tval.tv_usec < lim_time)\r
720ee7f6 1011 {\r
1012 // we are too fast\r
59d0f042 1013 if (vsync_offset) {\r
1014 if (lim_time - tval.tv_usec > target_frametime/2)\r
450dab6f 1015 simpleWait(pthissec, lim_time - target_frametime/4);\r
59d0f042 1016 gp2x_video_wait_vsync();\r
1017 } else {\r
450dab6f 1018 simpleWait(pthissec, lim_time);\r
59d0f042 1019 }\r
720ee7f6 1020 }\r
1021 }\r
1022\r
1023 blit(fpsbuff, notice);\r
1024\r
450dab6f 1025 pframes_done++; pframes_shown++;\r
1026 frames_done++; frames_shown++;\r
720ee7f6 1027 }\r
1028\r
8a091e48 1029 emu_changeFastForward(0);\r
5f9922e6 1030\r
dd5fd477 1031 if (PicoAHW & PAHW_MCD) PicoCDBufferFree();\r
5f9922e6 1032\r
720ee7f6 1033 // save SRAM\r
1034 if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
6ab2f79c 1035 emu_state_cb("Writing SRAM/BRAM..");\r
720ee7f6 1036 emu_SaveLoadGame(0, 1);\r
1037 SRam.changed = 0;\r
1038 }\r
e5d315a5 1039\r
13059a60 1040 // if in 8bit mode, generate 16bit image for menu background\r
1041 if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
84e21f25 1042 emu_forcedFrame(POPT_EN_SOFTSCALE);\r
720ee7f6 1043}\r
1044\r
1045\r
1046void emu_ResetGame(void)\r
1047{\r
8d5cb10d 1048 PicoReset();\r
720ee7f6 1049 reset_timing = 1;\r
1050}\r
1051\r
PicoDrive's frontend in a lib