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another timer change for Dai Makaimura
[picodrive.git] / platform / gp2x / emu.c
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1// (c) Copyright 2006-2007 notaz, All rights reserved.\r
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
9#include <sys/stat.h>\r
10#include <sys/types.h>\r
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
21#include "../common/arm_utils.h"\r
22#include "../common/fonts.h"\r
23#include "../common/emu.h"\r
24#include "../common/config.h"\r
25#include "cpuctrl.h"\r
26\r
27#include <Pico/PicoInt.h>\r
28#include <Pico/Patch.h>\r
29#include <Pico/sound/mix.h>\r
30#include <zlib/zlib.h>\r
31\r
32//#define PFRAMES\r
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
40\r
41int engineState;\r
42int select_exits = 0;\r
43\r
44char romFileName[PATH_MAX];\r
45\r
46extern int crashed_940;\r
47\r
48static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
49static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
50static int osd_fps_x;\r
51static int gp2x_old_gamma = 100;\r
52char noticeMsg[64]; // notice msg to draw\r
53unsigned char *PicoDraw2FB = NULL; // temporary buffer for alt renderer\r
54int reset_timing = 0;\r
55\r
56#define PICO_PEN_ADJUST_X 4\r
57#define PICO_PEN_ADJUST_Y 2\r
58static int pico_pen_x = 320/2, pico_pen_y = 240/2, pico_inp_mode = 0;\r
59\r
60static void emu_msg_cb(const char *msg);\r
61static void emu_msg_tray_open(void);\r
62\r
63\r
64void emu_noticeMsgUpdated(void)\r
65{\r
66 gettimeofday(&noticeMsgTime, 0);\r
67}\r
68\r
69void emu_getMainDir(char *dst, int len)\r
70{\r
71 extern char **g_argv;\r
72 int j;\r
73\r
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
80}\r
81\r
82void emu_Init(void)\r
83{\r
84 // make temp buffer for alt renderer\r
85 PicoDraw2FB = malloc((8+320)*(8+240+8));\r
86 if (!PicoDraw2FB)\r
87 {\r
88 printf("PicoDraw2FB == 0\n");\r
89 }\r
90\r
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
97 PicoInit();\r
98 PicoMessage = emu_msg_cb;\r
99 PicoMCDopenTray = emu_msg_tray_open;\r
100 PicoMCDcloseTray = menu_loop_tray;\r
101}\r
102\r
103\r
104static void scaling_update(void)\r
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
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
124 if (!(currentConfig.EmuOpt & 0x20)) {\r
125 config_writelrom(PicoConfigFile);\r
126#ifndef NO_SYNC\r
127 sync();\r
128#endif\r
129 }\r
130\r
131 free(PicoDraw2FB);\r
132\r
133 PicoExit();\r
134\r
135 // restore gamma\r
136 if (gp2x_old_gamma != 100)\r
137 set_gamma(100, 0);\r
138}\r
139\r
140void emu_prepareDefaultConfig(void)\r
141{\r
142 memset(&defaultConfig, 0, sizeof(defaultConfig));\r
143 defaultConfig.EmuOpt = 0x1d | 0x00700; // | <- ram_tmng, confirm_save, cd_leds\r
144 defaultConfig.s_PicoOpt = 0x0f | 0x20e00; // | <- use_940, cd_pcm, cd_cdda, svp drc\r
145 defaultConfig.s_PsndRate = 44100;\r
146 defaultConfig.s_PicoRegion = 0; // auto\r
147 defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
148 defaultConfig.s_PicoCDBuffers = 0;\r
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
169void emu_setDefaultConfig(void)\r
170{\r
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
177}\r
178\r
179void osd_text(int x, int y, const char *text)\r
180{\r
181 int len = strlen(text)*8;\r
182\r
183 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
184 int *p, i, h;\r
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
189 for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
190 }\r
191 emu_textOut8(x, y, text);\r
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
200 emu_textOut16(x, y, text);\r
201 }\r
202}\r
203\r
204static void draw_cd_leds(void)\r
205{\r
206// static\r
207 int old_reg;\r
208// if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
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
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
221 } else {\r
222 // 16-bit modes\r
223 unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+4);\r
224 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
225 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
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
228 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
229 }\r
230}\r
231\r
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
251static int EmuScanBegin16(unsigned int num)\r
252{\r
253 if (!(Pico.video.reg[1]&8)) num += 8;\r
254 DrawLineDest = (unsigned short *) gp2x_screen + 320 * num;\r
255\r
256 return 0;\r
257}\r
258\r
259static int EmuScanBegin8(unsigned int num)\r
260{\r
261 if (!(Pico.video.reg[1]&8)) num += 8;\r
262 DrawLineDest = (unsigned char *) gp2x_screen + 320 * num;\r
263\r
264 return 0;\r
265}\r
266\r
267int localPal[0x100];\r
268static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
269\r
270static void blit(const char *fps, const char *notice)\r
271{\r
272 int emu_opt = currentConfig.EmuOpt;\r
273\r
274 if (PicoOpt&0x10)\r
275 {\r
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
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
287 vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
288 }\r
289 else if (!(emu_opt&0x80))\r
290 {\r
291 // 8bit accurate renderer\r
292 if (Pico.m.dirtyPal)\r
293 {\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 memcpy32(localPal+0xc0, localPal+0x40, 0x40);\r
300 localPal[0xc0] = 0x0000c000;\r
301 localPal[0xd0] = 0x00c00000;\r
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 & PDRAW_SONIC_MODE) { // 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
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
324 if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))\r
325 draw_cd_leds();\r
326 if (PicoAHW & PAHW_PICO)\r
327 draw_pico_ptr();\r
328\r
329 //gp2x_video_wait_vsync();\r
330 gp2x_video_flip();\r
331\r
332 if (!(PicoOpt&0x10)) {\r
333 if (!(Pico.video.reg[1]&8)) {\r
334 if (currentConfig.EmuOpt&0x80) {\r
335 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
336 } else {\r
337 DrawLineDest = (unsigned char *) gp2x_screen + 320*8;\r
338 }\r
339 } else {\r
340 DrawLineDest = gp2x_screen;\r
341 }\r
342 }\r
343}\r
344\r
345\r
346// clears whole screen or just the notice area (in all buffers)\r
347static void clearArea(int full)\r
348{\r
349 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
350 // 8-bit renderers\r
351 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
352 else gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
353 } else {\r
354 // 16bit accurate renderer\r
355 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
356 else gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
357 }\r
358}\r
359\r
360\r
361static void vidResetMode(void)\r
362{\r
363 if (PicoOpt&0x10) {\r
364 gp2x_video_changemode(8);\r
365 } else if (currentConfig.EmuOpt&0x80) {\r
366 gp2x_video_changemode(16);\r
367 PicoDrawSetColorFormat(1);\r
368 PicoScanBegin = EmuScanBegin16;\r
369 } else {\r
370 gp2x_video_changemode(8);\r
371 PicoDrawSetColorFormat(2);\r
372 PicoScanBegin = EmuScanBegin8;\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
378 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
379 localPal[0xf0] = 0x00ffffff;\r
380 gp2x_video_setpalette(localPal, 0x100);\r
381 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
382 gp2x_video_flip();\r
383 }\r
384 Pico.m.dirtyPal = 1;\r
385 // reset scaling\r
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
389}\r
390\r
391\r
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
407\r
408 /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
409 reset_timing = 1;\r
410}\r
411\r
412static void emu_state_cb(const char *str)\r
413{\r
414 clearArea(0);\r
415 blit("", str);\r
416}\r
417\r
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
424static void RunEventsPico(unsigned int events, unsigned int gp2x_keys)\r
425{\r
426 if (events & (1 << 3)) {\r
427 pico_inp_mode++;\r
428 if (pico_inp_mode > 2) pico_inp_mode = 0;\r
429 switch (pico_inp_mode) {\r
430 case 2: strcpy(noticeMsg, "Input: Pen on Pad "); break;\r
431 case 1: strcpy(noticeMsg, "Input: Pen on Storyware"); break;\r
432 case 0: strcpy(noticeMsg, "Input: Joytick ");\r
433 PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
434 break;\r
435 }\r
436 gettimeofday(&noticeMsgTime, 0);\r
437 }\r
438 if (events & (1 << 4)) {\r
439 PicoPicohw.page--;\r
440 if (PicoPicohw.page < 0) PicoPicohw.page = 0;\r
441 sprintf(noticeMsg, "Page %i ", PicoPicohw.page);\r
442 gettimeofday(&noticeMsgTime, 0);\r
443 }\r
444 if (events & (1 << 5)) {\r
445 PicoPicohw.page++;\r
446 if (PicoPicohw.page > 6) PicoPicohw.page = 6;\r
447 sprintf(noticeMsg, "Page %i ", PicoPicohw.page);\r
448 gettimeofday(&noticeMsgTime, 0);\r
449 }\r
450 if (pico_inp_mode != 0) {\r
451 PicoPad[0] &= ~0x0f; // release UDLR\r
452 if (gp2x_keys & GP2X_UP) { pico_pen_y--; if (pico_pen_y < 0) pico_pen_y = 0; }\r
453 if (gp2x_keys & GP2X_DOWN) { pico_pen_y++; if (pico_pen_y > 239-PICO_PEN_ADJUST_Y) pico_pen_y = 239-PICO_PEN_ADJUST_Y; }\r
454 if (gp2x_keys & GP2X_LEFT) { pico_pen_x--; if (pico_pen_x < 0) pico_pen_x = 0; }\r
455 if (gp2x_keys & GP2X_RIGHT) {\r
456 int lim = (Pico.video.reg[12]&1) ? 319 : 255;\r
457 pico_pen_x++;\r
458 if (pico_pen_x > lim-PICO_PEN_ADJUST_X)\r
459 pico_pen_x = lim-PICO_PEN_ADJUST_X;\r
460 }\r
461 PicoPicohw.pen_pos[0] = pico_pen_x;\r
462 if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;\r
463 PicoPicohw.pen_pos[0] += 0x3c;\r
464 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
465 }\r
466}\r
467\r
468static void update_volume(int has_changed, int is_up)\r
469{\r
470 static int prev_frame = 0, wait_frames = 0;\r
471 int vol = currentConfig.volume;\r
472\r
473 if (has_changed)\r
474 {\r
475 if (vol < 5 && (PicoOpt&8) && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
476 wait_frames++;\r
477 else {\r
478 if (is_up) {\r
479 if (vol < 99) vol++;\r
480 } else {\r
481 if (vol > 0) vol--;\r
482 }\r
483 wait_frames = 0;\r
484 gp2x_sound_volume(vol, vol);\r
485 currentConfig.volume = vol;\r
486 }\r
487 sprintf(noticeMsg, "VOL: %02i", vol);\r
488 gettimeofday(&noticeMsgTime, 0);\r
489 prev_frame = Pico.m.frame_count;\r
490 }\r
491\r
492 // set the right mixer func\r
493 if (!(PicoOpt&8)) return; // just use defaults for mono\r
494 if (vol >= 5)\r
495 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
496 else {\r
497 mix_32_to_16l_level = 5 - vol;\r
498 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
499 }\r
500}\r
501\r
502static void change_fast_forward(int set_on)\r
503{\r
504 static void *set_PsndOut = NULL;\r
505 static int set_Frameskip, set_EmuOpt, is_on = 0;\r
506\r
507 if (set_on && !is_on) {\r
508 set_PsndOut = PsndOut;\r
509 set_Frameskip = currentConfig.Frameskip;\r
510 set_EmuOpt = currentConfig.EmuOpt;\r
511 PsndOut = NULL;\r
512 currentConfig.Frameskip = 8;\r
513 currentConfig.EmuOpt &= ~4;\r
514 is_on = 1;\r
515 }\r
516 else if (!set_on && is_on) {\r
517 PsndOut = set_PsndOut;\r
518 currentConfig.Frameskip = set_Frameskip;\r
519 currentConfig.EmuOpt = set_EmuOpt;\r
520 PsndRerate(1);\r
521 update_volume(0, 0);\r
522 reset_timing = 1;\r
523 is_on = 0;\r
524 }\r
525}\r
526\r
527static void RunEvents(unsigned int which)\r
528{\r
529 if (which & 0x1800) // save or load (but not both)\r
530 {\r
531 int do_it = 1;\r
532 if ( emu_checkSaveFile(state_slot) &&\r
533 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load\r
534 (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
535 unsigned long keys;\r
536 blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
537 while ( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
538 usleep(50*1024);\r
539 if (keys & GP2X_X) do_it = 0;\r
540 while ( gp2x_joystick_read(1) & (GP2X_X|GP2X_Y) ) // wait for release\r
541 usleep(50*1024);\r
542 clearArea(0);\r
543 }\r
544 if (do_it) {\r
545 osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
546 PicoStateProgressCB = emu_state_cb;\r
547 gp2x_memcpy_all_buffers(gp2x_screen, 0, 320*240*2);\r
548 emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
549 PicoStateProgressCB = NULL;\r
550 }\r
551\r
552 reset_timing = 1;\r
553 }\r
554 if (which & 0x0400) // switch renderer\r
555 {\r
556 if ( PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
557 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
558 else currentConfig.EmuOpt &= ~0x80;\r
559\r
560 vidResetMode();\r
561\r
562 if (PicoOpt&0x10) {\r
563 strcpy(noticeMsg, " 8bit fast renderer");\r
564 } else if (currentConfig.EmuOpt&0x80) {\r
565 strcpy(noticeMsg, "16bit accurate renderer");\r
566 } else {\r
567 strcpy(noticeMsg, " 8bit accurate renderer");\r
568 }\r
569\r
570 gettimeofday(&noticeMsgTime, 0);\r
571 }\r
572 if (which & 0x0300)\r
573 {\r
574 if(which&0x0200) {\r
575 state_slot -= 1;\r
576 if(state_slot < 0) state_slot = 9;\r
577 } else {\r
578 state_slot += 1;\r
579 if(state_slot > 9) state_slot = 0;\r
580 }\r
581 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
582 gettimeofday(&noticeMsgTime, 0);\r
583 }\r
584 if (which & 0x0080) {\r
585 engineState = PGS_Menu;\r
586 }\r
587}\r
588\r
589static void updateKeys(void)\r
590{\r
591 unsigned int keys, keys2, allActions[2] = { 0, 0 }, events;\r
592 static unsigned int prevEvents = 0;\r
593 int joy, i;\r
594\r
595 keys = gp2x_joystick_read(0);\r
596 if (keys & GP2X_SELECT) {\r
597 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
598 // wait until select is released, so menu would not resume game\r
599 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
600 }\r
601\r
602 keys &= CONFIGURABLE_KEYS;\r
603 keys2 = keys;\r
604\r
605 for (i = 0; i < 32; i++)\r
606 {\r
607 if (keys2 & (1 << i))\r
608 {\r
609 int pl, acts = currentConfig.KeyBinds[i];\r
610 if (!acts) continue;\r
611 pl = (acts >> 16) & 1;\r
612 if (kb_combo_keys & (1 << i))\r
613 {\r
614 int u = i+1, acts_c = acts & kb_combo_acts;\r
615 // let's try to find the other one\r
616 if (acts_c) {\r
617 for (; u < 32; u++)\r
618 if ( (keys2 & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {\r
619 allActions[pl] |= acts_c & currentConfig.KeyBinds[u];\r
620 keys2 &= ~((1 << i) | (1 << u));\r
621 break;\r
622 }\r
623 }\r
624 // add non-combo actions if combo ones were not found\r
625 if (!acts_c || u == 32)\r
626 allActions[pl] |= acts & ~kb_combo_acts;\r
627 } else {\r
628 allActions[pl] |= acts;\r
629 }\r
630 }\r
631 }\r
632\r
633 // add joy inputs\r
634 if (num_of_joys > 0)\r
635 {\r
636 gp2x_usbjoy_update();\r
637 for (joy = 0; joy < num_of_joys; joy++) {\r
638 int btns = gp2x_usbjoy_check2(joy);\r
639 for (i = 0; i < 32; i++) {\r
640 if (btns & (1 << i)) {\r
641 int acts = currentConfig.JoyBinds[joy][i];\r
642 int pl = (acts >> 16) & 1;\r
643 allActions[pl] |= acts;\r
644 }\r
645 }\r
646 }\r
647 }\r
648\r
649 PicoPad[0] = (unsigned short) allActions[0];\r
650 PicoPad[1] = (unsigned short) allActions[1];\r
651\r
652 events = (allActions[0] | allActions[1]) >> 16;\r
653\r
654 // volume is treated in special way and triggered every frame\r
655 if (events & 0x6000)\r
656 update_volume(1, events & 0x2000);\r
657\r
658 if ((events ^ prevEvents) & 0x40)\r
659 change_fast_forward(events & 0x40);\r
660\r
661 events &= ~prevEvents;\r
662\r
663 if (PicoAHW == PAHW_PICO)\r
664 RunEventsPico(events, keys);\r
665\r
666 if (events) RunEvents(events);\r
667 if (movie_data) emu_updateMovie();\r
668\r
669 prevEvents = (allActions[0] | allActions[1]) >> 16;\r
670}\r
671\r
672\r
673static void updateSound(int len)\r
674{\r
675 if (PicoOpt&8) len<<=1;\r
676\r
677 /* avoid writing audio when lagging behind to prevent audio lag */\r
678 if (PicoSkipFrame != 2)\r
679 gp2x_sound_write(PsndOut, len<<1);\r
680}\r
681\r
682\r
683static void SkipFrame(int do_audio)\r
684{\r
685 PicoSkipFrame=do_audio ? 1 : 2;\r
686 PicoFrame();\r
687 PicoSkipFrame=0;\r
688}\r
689\r
690\r
691void emu_forcedFrame(void)\r
692{\r
693 int po_old = PicoOpt;\r
694 int eo_old = currentConfig.EmuOpt;\r
695\r
696 PicoOpt &= ~0x0010;\r
697 PicoOpt |= 0x4080; // soft_scale | acc_sprites\r
698 currentConfig.EmuOpt |= 0x80;\r
699\r
700 //vidResetMode();\r
701 PicoDrawSetColorFormat(1);\r
702 PicoScanBegin = EmuScanBegin16;\r
703 Pico.m.dirtyPal = 1;\r
704 PicoFrameDrawOnly();\r
705\r
706/*\r
707 if (!(Pico.video.reg[12]&1)) {\r
708 vidCpyM2 = vidCpyM2_32col;\r
709 clearArea(1);\r
710 } else vidCpyM2 = vidCpyM2_40col;\r
711\r
712 vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
713 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
714 gp2x_video_setpalette(localPal, 0x40);\r
715*/\r
716 PicoOpt = po_old;\r
717 currentConfig.EmuOpt = eo_old;\r
718}\r
719\r
720static void simpleWait(int thissec, int lim_time)\r
721{\r
722 struct timeval tval;\r
723\r
724 spend_cycles(1024);\r
725 gettimeofday(&tval, 0);\r
726 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
727\r
728 while (tval.tv_usec < lim_time)\r
729 {\r
730 spend_cycles(1024);\r
731 gettimeofday(&tval, 0);\r
732 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
733 }\r
734}\r
735\r
736\r
737#if 0\r
738static void tga_dump(void)\r
739{\r
740#define BYTE unsigned char\r
741#define WORD unsigned short\r
742 struct\r
743 {\r
744 BYTE IDLength; /* 00h Size of Image ID field */\r
745 BYTE ColorMapType; /* 01h Color map type */\r
746 BYTE ImageType; /* 02h Image type code */\r
747 WORD CMapStart; /* 03h Color map origin */\r
748 WORD CMapLength; /* 05h Color map length */\r
749 BYTE CMapDepth; /* 07h Depth of color map entries */\r
750 WORD XOffset; /* 08h X origin of image */\r
751 WORD YOffset; /* 0Ah Y origin of image */\r
752 WORD Width; /* 0Ch Width of image */\r
753 WORD Height; /* 0Eh Height of image */\r
754 BYTE PixelDepth; /* 10h Image pixel size */\r
755 BYTE ImageDescriptor; /* 11h Image descriptor byte */\r
756 } __attribute__((packed)) TGAHEAD;\r
757 static unsigned short oldscr[320*240];\r
758 FILE *f; char name[128]; int i;\r
759\r
760 memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
761 TGAHEAD.ImageType = 2;\r
762 TGAHEAD.Width = 320;\r
763 TGAHEAD.Height = 240;\r
764 TGAHEAD.PixelDepth = 16;\r
765 TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
766\r
767#define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
768\r
769 for (i = 0; i < 320*240; i++)\r
770 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
771 if (i < 320*240)\r
772 {\r
773 for (i = 0; i < 320*240; i++)\r
774 oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
775 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
776 f = fopen(name, "wb");\r
777 if (!f) { printf("!f\n"); exit(1); }\r
778 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
779 fwrite(oldscr, 1, 320*240*2, f);\r
780 fclose(f);\r
781 }\r
782}\r
783#endif\r
784\r
785\r
786void emu_Loop(void)\r
787{\r
788 static int gp2x_old_clock = 200;\r
789 static int PsndRate_old = 0, PicoOpt_old = 0, EmuOpt_old = 0, pal_old = 0;\r
790 char fpsbuff[24]; // fps count c string\r
791 struct timeval tval; // timing\r
792 int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
793 int frames_done, frames_shown, thissec; // actual frames\r
794 int oldmodes = 0, target_fps, target_frametime, lim_time, vsync_offset, i;\r
795 char *notice = 0;\r
796\r
797 printf("entered emu_Loop()\n");\r
798\r
799 if (gp2x_old_clock != currentConfig.CPUclock) {\r
800 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
801 set_FCLK(currentConfig.CPUclock);\r
802 gp2x_old_clock = currentConfig.CPUclock;\r
803 printf(" done\n");\r
804 }\r
805\r
806 if (gp2x_old_gamma != currentConfig.gamma || (EmuOpt_old&0x1000) != (currentConfig.EmuOpt&0x1000)) {\r
807 set_gamma(currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
808 gp2x_old_gamma = currentConfig.gamma;\r
809 printf("updated gamma to %i, A_SN's curve: %i\n", currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
810 }\r
811\r
812 if ((EmuOpt_old&0x2000) != (currentConfig.EmuOpt&0x2000)) {\r
813 if (currentConfig.EmuOpt&0x2000)\r
814 set_LCD_custom_rate(Pico.m.pal ? LCDR_100 : LCDR_120);\r
815 else unset_LCD_custom_rate();\r
816 }\r
817\r
818 EmuOpt_old = currentConfig.EmuOpt;\r
819 fpsbuff[0] = 0;\r
820\r
821 // make sure we are in correct mode\r
822 vidResetMode();\r
823 scaling_update();\r
824 Pico.m.dirtyPal = 1;\r
825 oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
826 emu_findKeyBindCombos();\r
827\r
828 // pal/ntsc might have changed, reset related stuff\r
829 target_fps = Pico.m.pal ? 50 : 60;\r
830 target_frametime = 1000000/target_fps;\r
831 reset_timing = 1;\r
832\r
833 // prepare sound stuff\r
834 if (currentConfig.EmuOpt & 4)\r
835 {\r
836 int snd_excess_add;\r
837 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old ||\r
838 ((PicoOpt&0x200) && crashed_940)) {\r
839 PsndRerate(Pico.m.frame_count ? 1 : 0);\r
840 }\r
841 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
842 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
843 PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
844 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
845 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
846 PicoWriteSound = updateSound;\r
847 update_volume(0, 0);\r
848 memset(sndBuffer, 0, sizeof(sndBuffer));\r
849 PsndOut = sndBuffer;\r
850 PsndRate_old = PsndRate;\r
851 PicoOpt_old = PicoOpt;\r
852 pal_old = Pico.m.pal;\r
853 } else {\r
854 PsndOut = NULL;\r
855 }\r
856\r
857 // prepare CD buffer\r
858 if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r
859\r
860 // calc vsync offset to sync timing code with vsync\r
861 if (currentConfig.EmuOpt&0x2000) {\r
862 gettimeofday(&tval, 0);\r
863 gp2x_video_wait_vsync();\r
864 gettimeofday(&tval, 0);\r
865 vsync_offset = tval.tv_usec;\r
866 while (vsync_offset >= target_frametime)\r
867 vsync_offset -= target_frametime;\r
868 if (!vsync_offset) vsync_offset++;\r
869 printf("vsync_offset: %i\n", vsync_offset);\r
870 } else\r
871 vsync_offset = 0;\r
872\r
873 frames_done = frames_shown = thissec =\r
874 pframes_done = pframes_shown = pthissec = 0;\r
875\r
876 // loop\r
877 while (engineState == PGS_Running)\r
878 {\r
879 int modes;\r
880\r
881 gettimeofday(&tval, 0);\r
882 if (reset_timing) {\r
883 reset_timing = 0;\r
884 pthissec = tval.tv_sec;\r
885 pframes_shown = pframes_done = tval.tv_usec/target_frametime;\r
886 }\r
887\r
888 // show notice message?\r
889 if (noticeMsgTime.tv_sec)\r
890 {\r
891 static int noticeMsgSum;\r
892 if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
893 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
894 clearArea(0);\r
895 notice = 0;\r
896 } else {\r
897 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
898 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
899 notice = noticeMsg;\r
900 }\r
901 }\r
902\r
903 // check for mode changes\r
904 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
905 if (modes != oldmodes)\r
906 {\r
907 int scalex = 320;\r
908 osd_fps_x = OSD_FPS_X;\r
909 if (modes & 4) {\r
910 vidCpyM2 = vidCpyM2_40col;\r
911 } else {\r
912 if (PicoOpt & 0x100) {\r
913 vidCpyM2 = vidCpyM2_32col_nobord;\r
914 scalex = 256;\r
915 osd_fps_x = OSD_FPS_X - 64;\r
916 } else {\r
917 vidCpyM2 = vidCpyM2_32col;\r
918 }\r
919 }\r
920 if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
921 gp2x_video_RGB_setscaling(8, scalex, 224);\r
922 else gp2x_video_RGB_setscaling(0, scalex, 240);\r
923 oldmodes = modes;\r
924 clearArea(1);\r
925 }\r
926\r
927 // second changed?\r
928 if (thissec != tval.tv_sec)\r
929 {\r
930#ifdef BENCHMARK\r
931 static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
932 if (++bench == 10) {\r
933 bench = 0;\r
934 bench_fps_s = bench_fps;\r
935 bf[bfp++ & 3] = bench_fps;\r
936 bench_fps = 0;\r
937 }\r
938 bench_fps += frames_shown;\r
939 sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
940#else\r
941 if (currentConfig.EmuOpt & 2) {\r
942 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
943 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
944 }\r
945#endif\r
946 frames_shown = frames_done = 0;\r
947 thissec = tval.tv_sec;\r
948 }\r
949#ifdef PFRAMES\r
950 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
951#endif\r
952\r
953 if (pthissec != tval.tv_sec)\r
954 {\r
955 if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
956 pframes_done = pframes_shown = 0;\r
957 } else {\r
958 // it is quite common for this implementation to leave 1 fame unfinished\r
959 // when second changes, but we don't want buffer to starve.\r
960 if(PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {\r
961 updateKeys();\r
962 SkipFrame(1); pframes_done++;\r
963 }\r
964\r
965 pframes_done -= target_fps; if (pframes_done < 0) pframes_done = 0;\r
966 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;\r
967 if (pframes_shown > pframes_done) pframes_shown = pframes_done;\r
968 }\r
969 pthissec = tval.tv_sec;\r
970 }\r
971\r
972 lim_time = (pframes_done+1) * target_frametime + vsync_offset;\r
973 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
974 {\r
975 for(i = 0; i < currentConfig.Frameskip; i++) {\r
976 updateKeys();\r
977 SkipFrame(1); pframes_done++; frames_done++;\r
978 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
979 gettimeofday(&tval, 0);\r
980 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
981 if (tval.tv_usec < lim_time) { // we are too fast\r
982 simpleWait(pthissec, lim_time);\r
983 }\r
984 }\r
985 lim_time += target_frametime;\r
986 }\r
987 }\r
988 else if (tval.tv_usec > lim_time) // auto frameskip\r
989 {\r
990 // no time left for this frame - skip\r
991 if (tval.tv_usec - lim_time >= 300000) {\r
992 /* something caused a slowdown for us (disk access? cache flush?)\r
993 * try to recover by resetting timing... */\r
994 reset_timing = 1;\r
995 continue;\r
996 }\r
997 updateKeys();\r
998 SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;\r
999 continue;\r
1000 }\r
1001\r
1002 updateKeys();\r
1003 PicoFrame();\r
1004\r
1005 // check time\r
1006 gettimeofday(&tval, 0);\r
1007 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1008\r
1009 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
1010 reset_timing = 1;\r
1011 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
1012 {\r
1013 // sleep or vsync if we are still too fast\r
1014 // usleep sleeps for ~20ms minimum, so it is not a solution here\r
1015 if (!reset_timing && tval.tv_usec < lim_time)\r
1016 {\r
1017 // we are too fast\r
1018 if (vsync_offset) {\r
1019 if (lim_time - tval.tv_usec > target_frametime/2)\r
1020 simpleWait(pthissec, lim_time - target_frametime/4);\r
1021 gp2x_video_wait_vsync();\r
1022 } else {\r
1023 simpleWait(pthissec, lim_time);\r
1024 }\r
1025 }\r
1026 }\r
1027\r
1028 blit(fpsbuff, notice);\r
1029\r
1030 pframes_done++; pframes_shown++;\r
1031 frames_done++; frames_shown++;\r
1032 }\r
1033\r
1034 change_fast_forward(0);\r
1035\r
1036 if (PicoAHW & PAHW_MCD) PicoCDBufferFree();\r
1037\r
1038 // save SRAM\r
1039 if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1040 emu_state_cb("Writing SRAM/BRAM..");\r
1041 emu_SaveLoadGame(0, 1);\r
1042 SRam.changed = 0;\r
1043 }\r
1044\r
1045 // if in 8bit mode, generate 16bit image for menu background\r
1046 if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
1047 emu_forcedFrame();\r
1048}\r
1049\r
1050\r
1051void emu_ResetGame(void)\r
1052{\r
1053 PicoReset();\r
1054 reset_timing = 1;\r
1055}\r
1056\r
fast MegaDrive/MegaCD/32X emulator