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starting input layer integration work
[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 "menu.h"\r
20#include "../linux/usbjoy.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 "../common/input.h"\r
26#include "../linux/sndout_oss.h"\r
27#include "cpuctrl.h"\r
28\r
29#include <pico/pico_int.h>\r
30#include <pico/patch.h>\r
31#include <pico/sound/mix.h>\r
32#include <zlib/zlib.h>\r
33\r
34//#define PFRAMES\r
35\r
36#ifdef BENCHMARK\r
37#define OSD_FPS_X 220\r
38#else\r
39#define OSD_FPS_X 260\r
40#endif\r
41\r
42\r
43int engineState;\r
44int select_exits = 0;\r
45\r
46char romFileName[PATH_MAX];\r
47\r
48extern int crashed_940;\r
49\r
50static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
51static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
52static int osd_fps_x;\r
53static int gp2x_old_gamma = 100;\r
54unsigned char *PicoDraw2FB = NULL; // temporary buffer for alt renderer\r
55int reset_timing = 0;\r
56\r
57#define PICO_PEN_ADJUST_X 4\r
58#define PICO_PEN_ADJUST_Y 2\r
59static int pico_pen_x = 320/2, pico_pen_y = 240/2;\r
60\r
61static void emu_msg_cb(const char *msg);\r
62static void emu_msg_tray_open(void);\r
63\r
64\r
65void emu_noticeMsgUpdated(void)\r
66{\r
67 gettimeofday(&noticeMsgTime, 0);\r
68}\r
69\r
70int emu_getMainDir(char *dst, int len)\r
71{\r
72 extern char **g_argv;\r
73 int j;\r
74\r
75 strncpy(dst, g_argv[0], len);\r
76 len -= 32; // reserve\r
77 if (len < 0) len = 0;\r
78 dst[len] = 0;\r
79 for (j = strlen(dst); j > 0; j--)\r
80 if (dst[j] == '/') { dst[j+1] = 0; break; }\r
81\r
82 return j + 1;\r
83}\r
84\r
85void emu_Init(void)\r
86{\r
87 // make temp buffer for alt renderer\r
88 PicoDraw2FB = malloc((8+320)*(8+240+8));\r
89 if (!PicoDraw2FB)\r
90 {\r
91 printf("PicoDraw2FB == 0\n");\r
92 }\r
93\r
94 // make dirs for saves, cfgs, etc.\r
95 mkdir("mds", 0777);\r
96 mkdir("srm", 0777);\r
97 mkdir("brm", 0777);\r
98 mkdir("cfg", 0777);\r
99\r
100 PicoInit();\r
101 PicoMessage = emu_msg_cb;\r
102 PicoMCDopenTray = emu_msg_tray_open;\r
103 PicoMCDcloseTray = menu_loop_tray;\r
104}\r
105\r
106\r
107static void scaling_update(void)\r
108{\r
109 PicoOpt &= ~0x4100;\r
110 switch (currentConfig.scaling) {\r
111 default: break; // off\r
112 case 1: // hw hor\r
113 case 2: PicoOpt |= 0x0100; break; // hw hor+vert\r
114 case 3: PicoOpt |= 0x4000; break; // sw hor\r
115 }\r
116}\r
117\r
118\r
119void emu_Deinit(void)\r
120{\r
121 // save SRAM\r
122 if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
123 emu_SaveLoadGame(0, 1);\r
124 SRam.changed = 0;\r
125 }\r
126\r
127 if (!(currentConfig.EmuOpt & EOPT_NO_AUTOSVCFG))\r
128 emu_writelrom();\r
129\r
130 free(PicoDraw2FB);\r
131\r
132 PicoExit();\r
133\r
134 // restore gamma\r
135 if (gp2x_old_gamma != 100)\r
136 set_gamma(100, 0);\r
137}\r
138\r
139void emu_prepareDefaultConfig(void)\r
140{\r
141 memset(&defaultConfig, 0, sizeof(defaultConfig));\r
142 defaultConfig.EmuOpt = 0x9d | 0x00700; // | <- ram_tmng, confirm_save, cd_leds\r
143 defaultConfig.s_PicoOpt = 0x0f | POPT_EXT_FM|POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC|POPT_ACC_SPRITES;\r
144 defaultConfig.s_PsndRate = 44100;\r
145 defaultConfig.s_PicoRegion = 0; // auto\r
146 defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
147 defaultConfig.s_PicoCDBuffers = 0;\r
148 defaultConfig.Frameskip = -1; // auto\r
149 defaultConfig.CPUclock = 200;\r
150 defaultConfig.volume = 50;\r
151 defaultConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
152 defaultConfig.KeyBinds[ 4] = 1<<1;\r
153 defaultConfig.KeyBinds[ 2] = 1<<2;\r
154 defaultConfig.KeyBinds[ 6] = 1<<3;\r
155 defaultConfig.KeyBinds[14] = 1<<4;\r
156 defaultConfig.KeyBinds[13] = 1<<5;\r
157 defaultConfig.KeyBinds[12] = 1<<6;\r
158 defaultConfig.KeyBinds[ 8] = 1<<7;\r
159 defaultConfig.KeyBinds[15] = 1<<26; // switch rend\r
160 defaultConfig.KeyBinds[10] = 1<<27; // save state\r
161 defaultConfig.KeyBinds[11] = 1<<28; // load state\r
162 defaultConfig.KeyBinds[23] = 1<<29; // vol up\r
163 defaultConfig.KeyBinds[22] = 1<<30; // vol down\r
164 defaultConfig.gamma = 100;\r
165 defaultConfig.scaling = 0;\r
166 defaultConfig.turbo_rate = 15;\r
167}\r
168\r
169void osd_text(int x, int y, const char *text)\r
170{\r
171 int len = strlen(text)*8;\r
172\r
173 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
174 int *p, i, h;\r
175 x &= ~3; // align x\r
176 len = (len+3) >> 2;\r
177 for (h = 0; h < 8; h++) {\r
178 p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
179 for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
180 }\r
181 emu_textOut8(x, y, text);\r
182 } else {\r
183 int *p, i, h;\r
184 x &= ~1; // align x\r
185 len = (len+1) >> 1;\r
186 for (h = 0; h < 8; h++) {\r
187 p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
188 for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
189 }\r
190 emu_textOut16(x, y, text);\r
191 }\r
192}\r
193\r
194static void draw_cd_leds(void)\r
195{\r
196// static\r
197 int old_reg;\r
198// if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
199 old_reg = Pico_mcd->s68k_regs[0];\r
200\r
201 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
202 // 8-bit modes\r
203 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
204 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
205 *(unsigned int *)((char *)gp2x_screen + 320*2+ 4) =\r
206 *(unsigned int *)((char *)gp2x_screen + 320*3+ 4) =\r
207 *(unsigned int *)((char *)gp2x_screen + 320*4+ 4) = col_g;\r
208 *(unsigned int *)((char *)gp2x_screen + 320*2+12) =\r
209 *(unsigned int *)((char *)gp2x_screen + 320*3+12) =\r
210 *(unsigned int *)((char *)gp2x_screen + 320*4+12) = col_r;\r
211 } else {\r
212 // 16-bit modes\r
213 unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+4);\r
214 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
215 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
216 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
217 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
218 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
219 }\r
220}\r
221\r
222static void draw_pico_ptr(void)\r
223{\r
224 unsigned short *p = (unsigned short *)gp2x_screen;\r
225\r
226 // only if pen enabled and for 16bit modes\r
227 if (pico_inp_mode == 0 || (PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) return;\r
228\r
229 if (!(Pico.video.reg[12]&1) && !(PicoOpt&POPT_DIS_32C_BORDER))\r
230 p += 32;\r
231\r
232 p += 320 * (pico_pen_y + PICO_PEN_ADJUST_Y);\r
233 p += pico_pen_x + PICO_PEN_ADJUST_X;\r
234 p[0] ^= 0xffff;\r
235 p[319] ^= 0xffff;\r
236 p[320] ^= 0xffff;\r
237 p[321] ^= 0xffff;\r
238 p[640] ^= 0xffff;\r
239}\r
240\r
241static int EmuScanBegin16(unsigned int num)\r
242{\r
243 if (!(Pico.video.reg[1]&8)) num += 8;\r
244 DrawLineDest = (unsigned short *) gp2x_screen + 320 * num;\r
245\r
246 return 0;\r
247}\r
248\r
249static int EmuScanBegin8(unsigned int num)\r
250{\r
251 if (!(Pico.video.reg[1]&8)) num += 8;\r
252 DrawLineDest = (unsigned char *) gp2x_screen + 320 * num;\r
253\r
254 return 0;\r
255}\r
256\r
257int localPal[0x100];\r
258static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
259\r
260static void blit(const char *fps, const char *notice)\r
261{\r
262 int emu_opt = currentConfig.EmuOpt;\r
263\r
264 if (PicoOpt&0x10)\r
265 {\r
266 // 8bit fast renderer\r
267 if (Pico.m.dirtyPal) {\r
268 Pico.m.dirtyPal = 0;\r
269 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
270 // feed new palette to our device\r
271 gp2x_video_setpalette(localPal, 0x40);\r
272 }\r
273 // a hack for VR\r
274 if (PicoRead16Hook == PicoSVPRead16)\r
275 memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);\r
276 // do actual copy\r
277 vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
278 }\r
279 else if (!(emu_opt&0x80))\r
280 {\r
281 // 8bit accurate renderer\r
282 if (Pico.m.dirtyPal)\r
283 {\r
284 int pallen = 0xc0;\r
285 Pico.m.dirtyPal = 0;\r
286 if (Pico.video.reg[0xC]&8) // shadow/hilight mode\r
287 {\r
288 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
289 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
290 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
291 memcpy32(localPal+0xc0, localPal+0x40, 0x40);\r
292 pallen = 0x100;\r
293 }\r
294 else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes\r
295 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
296 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
297 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
298 }\r
299 else {\r
300 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
301 memcpy32(localPal+0x80, localPal, 0x40); // for spr prio mess\r
302 }\r
303 if (pallen > 0xc0) {\r
304 localPal[0xc0] = 0x0000c000;\r
305 localPal[0xd0] = 0x00c00000;\r
306 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
307 localPal[0xf0] = 0x00ffffff;\r
308 }\r
309 gp2x_video_setpalette(localPal, pallen);\r
310 }\r
311 }\r
312\r
313 if (notice || (emu_opt & 2)) {\r
314 int h = 232;\r
315 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 8;\r
316 if (notice) osd_text(4, h, notice);\r
317 if (emu_opt & 2)\r
318 osd_text(osd_fps_x, h, fps);\r
319 }\r
320 if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))\r
321 draw_cd_leds();\r
322 if (PicoAHW & PAHW_PICO)\r
323 draw_pico_ptr();\r
324\r
325 //gp2x_video_wait_vsync();\r
326 gp2x_video_flip();\r
327\r
328 if (!(PicoOpt&0x10)) {\r
329 if (!(Pico.video.reg[1]&8)) {\r
330 if (currentConfig.EmuOpt&0x80) {\r
331 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
332 } else {\r
333 DrawLineDest = (unsigned char *) gp2x_screen + 320*8;\r
334 }\r
335 } else {\r
336 DrawLineDest = gp2x_screen;\r
337 }\r
338 }\r
339}\r
340\r
341\r
342// clears whole screen or just the notice area (in all buffers)\r
343static void clearArea(int full)\r
344{\r
345 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
346 // 8-bit renderers\r
347 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
348 else gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
349 } else {\r
350 // 16bit accurate renderer\r
351 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
352 else gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
353 }\r
354}\r
355\r
356\r
357static void vidResetMode(void)\r
358{\r
359 if (PicoOpt&0x10) {\r
360 gp2x_video_changemode(8);\r
361 } else if (currentConfig.EmuOpt&0x80) {\r
362 gp2x_video_changemode(16);\r
363 PicoDrawSetColorFormat(1);\r
364 PicoScanBegin = EmuScanBegin16;\r
365 } else {\r
366 gp2x_video_changemode(8);\r
367 PicoDrawSetColorFormat(2);\r
368 PicoScanBegin = EmuScanBegin8;\r
369 }\r
370 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
371 // setup pal for 8-bit modes\r
372 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
373 localPal[0xd0] = 0x00c00000;\r
374 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
375 localPal[0xf0] = 0x00ffffff;\r
376 gp2x_video_setpalette(localPal, 0x100);\r
377 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
378 gp2x_video_flip();\r
379 }\r
380 Pico.m.dirtyPal = 1;\r
381 // reset scaling\r
382 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
383 gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
384 else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
385}\r
386\r
387\r
388static void emu_msg_cb(const char *msg)\r
389{\r
390 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
391 // 8-bit renderers\r
392 gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
393 osd_text(4, 232, msg);\r
394 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232, 320*232, 320*8);\r
395 } else {\r
396 // 16bit accurate renderer\r
397 gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
398 osd_text(4, 232, msg);\r
399 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232*2, 320*232*2, 320*8*2);\r
400 }\r
401 gettimeofday(&noticeMsgTime, 0);\r
402 noticeMsgTime.tv_sec -= 2;\r
403\r
404 /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
405 reset_timing = 1;\r
406}\r
407\r
408static void emu_state_cb(const char *str)\r
409{\r
410 clearArea(0);\r
411 blit("", str);\r
412}\r
413\r
414static void emu_msg_tray_open(void)\r
415{\r
416 strcpy(noticeMsg, "CD tray opened");\r
417 gettimeofday(&noticeMsgTime, 0);\r
418}\r
419\r
420static void RunEventsPico(unsigned int events, unsigned int gp2x_keys)\r
421{\r
422 int ret, px, py, lim_x;\r
423 static int pdown_frames = 0;\r
424\r
425 emu_RunEventsPico(events);\r
426\r
427 if (pico_inp_mode == 0) return;\r
428\r
429 // for F200\r
430 ret = gp2x_touchpad_read(&px, &py);\r
431 if (ret >= 0)\r
432 {\r
433 if (ret > 35000)\r
434 {\r
435 if (pdown_frames++ > 5)\r
436 PicoPad[0] |= 0x20;\r
437\r
438 pico_pen_x = px;\r
439 pico_pen_y = py;\r
440 if (!(Pico.video.reg[12]&1)) {\r
441 pico_pen_x -= 32;\r
442 if (pico_pen_x < 0) pico_pen_x = 0;\r
443 if (pico_pen_x > 248) pico_pen_x = 248;\r
444 }\r
445 if (pico_pen_y > 224) pico_pen_y = 224;\r
446 }\r
447 else\r
448 pdown_frames = 0;\r
449\r
450 //if (ret == 0)\r
451 // PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
452 }\r
453\r
454 PicoPad[0] &= ~0x0f; // release UDLR\r
455 if (gp2x_keys & GP2X_UP) pico_pen_y--;\r
456 if (gp2x_keys & GP2X_DOWN) pico_pen_y++;\r
457 if (gp2x_keys & GP2X_LEFT) pico_pen_x--;\r
458 if (gp2x_keys & GP2X_RIGHT) pico_pen_x++;\r
459\r
460 lim_x = (Pico.video.reg[12]&1) ? 319 : 255;\r
461 if (pico_pen_y < 8) pico_pen_y = 8;\r
462 if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y;\r
463 if (pico_pen_x < 0) pico_pen_x = 0;\r
464 if (pico_pen_x > lim_x-PICO_PEN_ADJUST_X) pico_pen_x = lim_x-PICO_PEN_ADJUST_X;\r
465\r
466 PicoPicohw.pen_pos[0] = pico_pen_x;\r
467 if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;\r
468 PicoPicohw.pen_pos[0] += 0x3c;\r
469 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
470}\r
471\r
472static void update_volume(int has_changed, int is_up)\r
473{\r
474 static int prev_frame = 0, wait_frames = 0;\r
475 int vol = currentConfig.volume;\r
476\r
477 if (has_changed)\r
478 {\r
479 if (vol < 5 && (PicoOpt&8) && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
480 wait_frames++;\r
481 else {\r
482 if (is_up) {\r
483 if (vol < 99) vol++;\r
484 } else {\r
485 if (vol > 0) vol--;\r
486 }\r
487 wait_frames = 0;\r
488 sndout_oss_setvol(vol, vol);\r
489 currentConfig.volume = vol;\r
490 }\r
491 sprintf(noticeMsg, "VOL: %02i", vol);\r
492 gettimeofday(&noticeMsgTime, 0);\r
493 prev_frame = Pico.m.frame_count;\r
494 }\r
495\r
496 // set the right mixer func\r
497 if (!(PicoOpt&8)) return; // just use defaults for mono\r
498 if (vol >= 5)\r
499 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
500 else {\r
501 mix_32_to_16l_level = 5 - vol;\r
502 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
503 }\r
504}\r
505\r
506static void RunEvents(unsigned int which)\r
507{\r
508 if (which & 0x1800) // save or load (but not both)\r
509 {\r
510 int do_it = 1;\r
511 if ( emu_checkSaveFile(state_slot) &&\r
512 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load\r
513 (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
514 unsigned long keys;\r
515 blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
516 while ( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
517 usleep(50*1024);\r
518 if (keys & GP2X_X) do_it = 0;\r
519 while ( gp2x_joystick_read(1) & (GP2X_X|GP2X_Y) ) // wait for release\r
520 usleep(50*1024);\r
521 clearArea(0);\r
522 }\r
523 if (do_it) {\r
524 osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
525 PicoStateProgressCB = emu_state_cb;\r
526 gp2x_memcpy_all_buffers(gp2x_screen, 0, 320*240*2);\r
527 emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
528 PicoStateProgressCB = NULL;\r
529 }\r
530\r
531 reset_timing = 1;\r
532 }\r
533 if (which & 0x0400) // switch renderer\r
534 {\r
535 if ( PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
536 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
537 else currentConfig.EmuOpt &= ~0x80;\r
538\r
539 vidResetMode();\r
540\r
541 if (PicoOpt&0x10) {\r
542 strcpy(noticeMsg, " 8bit fast renderer");\r
543 } else if (currentConfig.EmuOpt&0x80) {\r
544 strcpy(noticeMsg, "16bit accurate renderer");\r
545 } else {\r
546 strcpy(noticeMsg, " 8bit accurate renderer");\r
547 }\r
548\r
549 gettimeofday(&noticeMsgTime, 0);\r
550 }\r
551 if (which & 0x0300)\r
552 {\r
553 if(which&0x0200) {\r
554 state_slot -= 1;\r
555 if(state_slot < 0) state_slot = 9;\r
556 } else {\r
557 state_slot += 1;\r
558 if(state_slot > 9) state_slot = 0;\r
559 }\r
560 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
561 gettimeofday(&noticeMsgTime, 0);\r
562 }\r
563 if (which & 0x0080) {\r
564 engineState = PGS_Menu;\r
565 }\r
566}\r
567\r
568static void updateKeys(void)\r
569{\r
570 unsigned int keys, keys2, allActions[2] = { 0, 0 }, events;\r
571 static unsigned int prevEvents = 0;\r
572 int joy, i;\r
573\r
574 keys = gp2x_joystick_read(0);\r
575 if (keys & GP2X_SELECT) {\r
576 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
577 // wait until select is released, so menu would not resume game\r
578 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
579 }\r
580\r
581 keys &= CONFIGURABLE_KEYS;\r
582 keys2 = keys;\r
583\r
584#if 1\r
585 {\r
586 /* FIXME: combos */\r
587 int acts = in_update();\r
588 int pl = (acts >> 16) & 1;\r
589 allActions[pl] |= acts;\r
590 }\r
591#else\r
592 for (i = 0; i < 32; i++)\r
593 {\r
594 if (keys2 & (1 << i))\r
595 {\r
596 int pl, acts = currentConfig.KeyBinds[i];\r
597 if (!acts) continue;\r
598 pl = (acts >> 16) & 1;\r
599 if (kb_combo_keys & (1 << i))\r
600 {\r
601 int u = i+1, acts_c = acts & kb_combo_acts;\r
602 // let's try to find the other one\r
603 if (acts_c) {\r
604 for (; u < 32; u++)\r
605 if ( (keys2 & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {\r
606 allActions[pl] |= acts_c & currentConfig.KeyBinds[u];\r
607 keys2 &= ~((1 << i) | (1 << u));\r
608 break;\r
609 }\r
610 }\r
611 // add non-combo actions if combo ones were not found\r
612 if (!acts_c || u == 32)\r
613 allActions[pl] |= acts & ~kb_combo_acts;\r
614 } else {\r
615 allActions[pl] |= acts;\r
616 }\r
617 }\r
618 }\r
619#endif\r
620\r
621 // add joy inputs\r
622 if (num_of_joys > 0)\r
623 {\r
624 usbjoy_update();\r
625 for (joy = 0; joy < num_of_joys; joy++) {\r
626 int btns = usbjoy_check2(joy);\r
627 for (i = 0; i < 32; i++) {\r
628 if (btns & (1 << i)) {\r
629 int acts = currentConfig.JoyBinds[joy][i];\r
630 int pl = (acts >> 16) & 1;\r
631 allActions[pl] |= acts;\r
632 }\r
633 }\r
634 }\r
635 }\r
636\r
637 PicoPad[0] = allActions[0] & 0xfff;\r
638 PicoPad[1] = allActions[1] & 0xfff;\r
639\r
640 if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);\r
641 if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);\r
642\r
643 events = (allActions[0] | allActions[1]) >> 16;\r
644\r
645 // volume is treated in special way and triggered every frame\r
646 if (events & 0x6000)\r
647 update_volume(1, events & 0x2000);\r
648\r
649 if ((events ^ prevEvents) & 0x40) {\r
650 emu_changeFastForward(events & 0x40);\r
651 update_volume(0, 0);\r
652 reset_timing = 1;\r
653 }\r
654\r
655 events &= ~prevEvents;\r
656\r
657 if (PicoAHW == PAHW_PICO)\r
658 RunEventsPico(events, keys);\r
659 if (events) RunEvents(events);\r
660 if (movie_data) emu_updateMovie();\r
661\r
662 prevEvents = (allActions[0] | allActions[1]) >> 16;\r
663}\r
664\r
665\r
666static void updateSound(int len)\r
667{\r
668 if (PicoOpt&8) len<<=1;\r
669\r
670 /* avoid writing audio when lagging behind to prevent audio lag */\r
671 if (PicoSkipFrame != 2)\r
672 sndout_oss_write(PsndOut, len<<1);\r
673}\r
674\r
675void emu_startSound(void)\r
676{\r
677 static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;\r
678 int target_fps = Pico.m.pal ? 50 : 60;\r
679\r
680 PsndOut = NULL;\r
681\r
682 // prepare sound stuff\r
683 if (currentConfig.EmuOpt & 4)\r
684 {\r
685 int snd_excess_add;\r
686 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old ||\r
687 ((PicoOpt&0x200) && crashed_940)) {\r
688 PsndRerate(Pico.m.frame_count ? 1 : 0);\r
689 }\r
690 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
691 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
692 PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
693 sndout_oss_start(PsndRate, 16, (PicoOpt&8)>>3);\r
694 sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r
695 PicoWriteSound = updateSound;\r
696 update_volume(0, 0);\r
697 memset(sndBuffer, 0, sizeof(sndBuffer));\r
698 PsndOut = sndBuffer;\r
699 PsndRate_old = PsndRate;\r
700 PicoOpt_old = PicoOpt;\r
701 pal_old = Pico.m.pal;\r
702 }\r
703}\r
704\r
705void emu_endSound(void)\r
706{\r
707}\r
708\r
709/* wait until we can write more sound */\r
710void emu_waitSound(void)\r
711{\r
712 // don't need to do anything, writes will block by themselves\r
713}\r
714\r
715\r
716static void SkipFrame(int do_audio)\r
717{\r
718 PicoSkipFrame=do_audio ? 1 : 2;\r
719 PicoFrame();\r
720 PicoSkipFrame=0;\r
721}\r
722\r
723\r
724void emu_forcedFrame(int opts)\r
725{\r
726 int po_old = PicoOpt;\r
727 int eo_old = currentConfig.EmuOpt;\r
728\r
729 PicoOpt &= ~0x10;\r
730 PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
731 currentConfig.EmuOpt |= 0x80;\r
732\r
733 //vidResetMode();\r
734 PicoDrawSetColorFormat(1);\r
735 PicoScanBegin = EmuScanBegin16;\r
736 Pico.m.dirtyPal = 1;\r
737 PicoFrameDrawOnly();\r
738\r
739/*\r
740 if (!(Pico.video.reg[12]&1)) {\r
741 vidCpyM2 = vidCpyM2_32col;\r
742 clearArea(1);\r
743 } else vidCpyM2 = vidCpyM2_40col;\r
744\r
745 vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
746 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
747 gp2x_video_setpalette(localPal, 0x40);\r
748*/\r
749 PicoOpt = po_old;\r
750 currentConfig.EmuOpt = eo_old;\r
751}\r
752\r
753void emu_platformDebugCat(char *str)\r
754{\r
755 // nothing\r
756}\r
757\r
758static void simpleWait(int thissec, int lim_time)\r
759{\r
760 struct timeval tval;\r
761\r
762 spend_cycles(1024);\r
763 gettimeofday(&tval, 0);\r
764 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
765\r
766 while (tval.tv_usec < lim_time)\r
767 {\r
768 spend_cycles(1024);\r
769 gettimeofday(&tval, 0);\r
770 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
771 }\r
772}\r
773\r
774\r
775#if 0\r
776static void tga_dump(void)\r
777{\r
778#define BYTE unsigned char\r
779#define WORD unsigned short\r
780 struct\r
781 {\r
782 BYTE IDLength; /* 00h Size of Image ID field */\r
783 BYTE ColorMapType; /* 01h Color map type */\r
784 BYTE ImageType; /* 02h Image type code */\r
785 WORD CMapStart; /* 03h Color map origin */\r
786 WORD CMapLength; /* 05h Color map length */\r
787 BYTE CMapDepth; /* 07h Depth of color map entries */\r
788 WORD XOffset; /* 08h X origin of image */\r
789 WORD YOffset; /* 0Ah Y origin of image */\r
790 WORD Width; /* 0Ch Width of image */\r
791 WORD Height; /* 0Eh Height of image */\r
792 BYTE PixelDepth; /* 10h Image pixel size */\r
793 BYTE ImageDescriptor; /* 11h Image descriptor byte */\r
794 } __attribute__((packed)) TGAHEAD;\r
795 static unsigned short oldscr[320*240];\r
796 FILE *f; char name[128]; int i;\r
797\r
798 memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
799 TGAHEAD.ImageType = 2;\r
800 TGAHEAD.Width = 320;\r
801 TGAHEAD.Height = 240;\r
802 TGAHEAD.PixelDepth = 16;\r
803 TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
804\r
805#define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
806\r
807 for (i = 0; i < 320*240; i++)\r
808 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
809 if (i < 320*240)\r
810 {\r
811 for (i = 0; i < 320*240; i++)\r
812 oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
813 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
814 f = fopen(name, "wb");\r
815 if (!f) { printf("!f\n"); exit(1); }\r
816 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
817 fwrite(oldscr, 1, 320*240*2, f);\r
818 fclose(f);\r
819 }\r
820}\r
821#endif\r
822\r
823\r
824void emu_Loop(void)\r
825{\r
826 static int gp2x_old_clock = 200, EmuOpt_old = 0;\r
827 char fpsbuff[24]; // fps count c string\r
828 struct timeval tval; // timing\r
829 int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
830 int frames_done, frames_shown, thissec; // actual frames\r
831 int oldmodes = 0, target_fps, target_frametime, lim_time, vsync_offset, i;\r
832 char *notice = 0;\r
833\r
834 printf("entered emu_Loop()\n");\r
835\r
836 if (gp2x_old_clock != currentConfig.CPUclock) {\r
837 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
838 set_FCLK(currentConfig.CPUclock);\r
839 gp2x_old_clock = currentConfig.CPUclock;\r
840 printf(" done\n");\r
841 }\r
842\r
843 if (gp2x_old_gamma != currentConfig.gamma || (EmuOpt_old&0x1000) != (currentConfig.EmuOpt&0x1000)) {\r
844 set_gamma(currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
845 gp2x_old_gamma = currentConfig.gamma;\r
846 printf("updated gamma to %i, A_SN's curve: %i\n", currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
847 }\r
848\r
849 if ((EmuOpt_old&0x2000) != (currentConfig.EmuOpt&0x2000)) {\r
850 if (currentConfig.EmuOpt&0x2000)\r
851 set_LCD_custom_rate(Pico.m.pal ? LCDR_100 : LCDR_120);\r
852 else unset_LCD_custom_rate();\r
853 }\r
854\r
855 EmuOpt_old = currentConfig.EmuOpt;\r
856 fpsbuff[0] = 0;\r
857\r
858 // make sure we are in correct mode\r
859 vidResetMode();\r
860 scaling_update();\r
861 Pico.m.dirtyPal = 1;\r
862 oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
863 emu_findKeyBindCombos();\r
864\r
865 // pal/ntsc might have changed, reset related stuff\r
866 target_fps = Pico.m.pal ? 50 : 60;\r
867 target_frametime = 1000000/target_fps;\r
868 reset_timing = 1;\r
869\r
870 emu_startSound();\r
871\r
872 // prepare CD buffer\r
873 if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r
874\r
875 // calc vsync offset to sync timing code with vsync\r
876 if (currentConfig.EmuOpt&0x2000) {\r
877 gettimeofday(&tval, 0);\r
878 gp2x_video_wait_vsync();\r
879 gettimeofday(&tval, 0);\r
880 vsync_offset = tval.tv_usec;\r
881 while (vsync_offset >= target_frametime)\r
882 vsync_offset -= target_frametime;\r
883 if (!vsync_offset) vsync_offset++;\r
884 printf("vsync_offset: %i\n", vsync_offset);\r
885 } else\r
886 vsync_offset = 0;\r
887\r
888 frames_done = frames_shown = thissec =\r
889 pframes_done = pframes_shown = pthissec = 0;\r
890\r
891 // loop\r
892 while (engineState == PGS_Running)\r
893 {\r
894 int modes;\r
895\r
896 gettimeofday(&tval, 0);\r
897 if (reset_timing) {\r
898 reset_timing = 0;\r
899 pthissec = tval.tv_sec;\r
900 pframes_shown = pframes_done = tval.tv_usec/target_frametime;\r
901 }\r
902\r
903 // show notice message?\r
904 if (noticeMsgTime.tv_sec)\r
905 {\r
906 static int noticeMsgSum;\r
907 if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
908 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
909 clearArea(0);\r
910 notice = 0;\r
911 } else {\r
912 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
913 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
914 notice = noticeMsg;\r
915 }\r
916 }\r
917\r
918 // check for mode changes\r
919 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
920 if (modes != oldmodes)\r
921 {\r
922 int scalex = 320;\r
923 osd_fps_x = OSD_FPS_X;\r
924 if (modes & 4) {\r
925 vidCpyM2 = vidCpyM2_40col;\r
926 } else {\r
927 if (PicoOpt & 0x100) {\r
928 vidCpyM2 = vidCpyM2_32col_nobord;\r
929 scalex = 256;\r
930 osd_fps_x = OSD_FPS_X - 64;\r
931 } else {\r
932 vidCpyM2 = vidCpyM2_32col;\r
933 }\r
934 }\r
935 if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
936 gp2x_video_RGB_setscaling(8, scalex, 224);\r
937 else gp2x_video_RGB_setscaling(0, scalex, 240);\r
938 oldmodes = modes;\r
939 clearArea(1);\r
940 }\r
941\r
942 // second changed?\r
943 if (thissec != tval.tv_sec)\r
944 {\r
945#ifdef BENCHMARK\r
946 static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
947 if (++bench == 10) {\r
948 bench = 0;\r
949 bench_fps_s = bench_fps;\r
950 bf[bfp++ & 3] = bench_fps;\r
951 bench_fps = 0;\r
952 }\r
953 bench_fps += frames_shown;\r
954 sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
955#else\r
956 if (currentConfig.EmuOpt & 2) {\r
957 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
958 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
959 }\r
960#endif\r
961 frames_shown = frames_done = 0;\r
962 thissec = tval.tv_sec;\r
963 }\r
964#ifdef PFRAMES\r
965 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
966#endif\r
967\r
968 if (pthissec != tval.tv_sec)\r
969 {\r
970 if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
971 pframes_done = pframes_shown = 0;\r
972 } else {\r
973 // it is quite common for this implementation to leave 1 fame unfinished\r
974 // when second changes, but we don't want buffer to starve.\r
975 if(PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {\r
976 updateKeys();\r
977 SkipFrame(1); pframes_done++;\r
978 }\r
979\r
980 pframes_done -= target_fps; if (pframes_done < 0) pframes_done = 0;\r
981 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;\r
982 if (pframes_shown > pframes_done) pframes_shown = pframes_done;\r
983 }\r
984 pthissec = tval.tv_sec;\r
985 }\r
986\r
987 lim_time = (pframes_done+1) * target_frametime + vsync_offset;\r
988 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
989 {\r
990 for(i = 0; i < currentConfig.Frameskip; i++) {\r
991 updateKeys();\r
992 SkipFrame(1); pframes_done++; frames_done++;\r
993 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
994 gettimeofday(&tval, 0);\r
995 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
996 if (tval.tv_usec < lim_time) { // we are too fast\r
997 simpleWait(pthissec, lim_time);\r
998 }\r
999 }\r
1000 lim_time += target_frametime;\r
1001 }\r
1002 }\r
1003 else if (tval.tv_usec > lim_time) // auto frameskip\r
1004 {\r
1005 // no time left for this frame - skip\r
1006 if (tval.tv_usec - lim_time >= 300000) {\r
1007 /* something caused a slowdown for us (disk access? cache flush?)\r
1008 * try to recover by resetting timing... */\r
1009 reset_timing = 1;\r
1010 continue;\r
1011 }\r
1012 updateKeys();\r
1013 SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;\r
1014 continue;\r
1015 }\r
1016\r
1017 updateKeys();\r
1018 PicoFrame();\r
1019\r
1020 // check time\r
1021 gettimeofday(&tval, 0);\r
1022 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
1023\r
1024 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
1025 reset_timing = 1;\r
1026 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
1027 {\r
1028 // sleep or vsync if we are still too fast\r
1029 // usleep sleeps for ~20ms minimum, so it is not a solution here\r
1030 if (!reset_timing && tval.tv_usec < lim_time)\r
1031 {\r
1032 // we are too fast\r
1033 if (vsync_offset) {\r
1034 if (lim_time - tval.tv_usec > target_frametime/2)\r
1035 simpleWait(pthissec, lim_time - target_frametime/4);\r
1036 gp2x_video_wait_vsync();\r
1037 } else {\r
1038 simpleWait(pthissec, lim_time);\r
1039 }\r
1040 }\r
1041 }\r
1042\r
1043 blit(fpsbuff, notice);\r
1044\r
1045 pframes_done++; pframes_shown++;\r
1046 frames_done++; frames_shown++;\r
1047 }\r
1048\r
1049 emu_changeFastForward(0);\r
1050\r
1051 if (PicoAHW & PAHW_MCD) PicoCDBufferFree();\r
1052\r
1053 // save SRAM\r
1054 if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1055 emu_state_cb("Writing SRAM/BRAM..");\r
1056 emu_SaveLoadGame(0, 1);\r
1057 SRam.changed = 0;\r
1058 }\r
1059\r
1060 // if in 8bit mode, generate 16bit image for menu background\r
1061 if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
1062 emu_forcedFrame(POPT_EN_SOFTSCALE);\r
1063}\r
1064\r
1065\r
1066void emu_ResetGame(void)\r
1067{\r
1068 PicoReset();\r
1069 reset_timing = 1;\r
1070}\r
1071\r
fast MegaDrive/MegaCD/32X emulator