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more Pandora porting work
[picodrive.git] / platform / pandora / emu.c
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e55f0cbb 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 "../gp2x/emu.h"\r
18#include "../gp2x/usbjoy.h"\r
19#include "../gp2x/menu.h"\r
20#include "../common/arm_utils.h"\r
21#include "../common/fonts.h"\r
22#include "../common/emu.h"\r
23#include "../common/config.h"\r
24#include "../common/common.h"\r
25\r
26#include <Pico/PicoInt.h>\r
27#include <Pico/Patch.h>\r
28#include <Pico/sound/mix.h>\r
29#include <zlib/zlib.h>\r
30\r
31//#define PFRAMES\r
32\r
33#ifdef BENCHMARK\r
34#define OSD_FPS_X (800-200)\r
35#else\r
36#define OSD_FPS_X (800-120)\r
37#endif\r
38\r
39\r
40int engineState;\r
41int select_exits = 0;\r
42\r
43char romFileName[PATH_MAX];\r
44\r
45static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
46static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
47static int osd_fps_x;\r
48char noticeMsg[64]; // notice msg to draw\r
49unsigned char *PicoDraw2FB = NULL; // temporary buffer for alt renderer\r
50int reset_timing = 0;\r
51\r
52#define PICO_PEN_ADJUST_X 4\r
53#define PICO_PEN_ADJUST_Y 2\r
54static int pico_pen_x = SCREEN_WIDTH/2, pico_pen_y = 240/2;\r
55\r
56static void emu_msg_cb(const char *msg);\r
57static void emu_msg_tray_open(void);\r
58\r
59\r
60void emu_noticeMsgUpdated(void)\r
61{\r
62 gettimeofday(&noticeMsgTime, 0);\r
63}\r
64\r
65void emu_getMainDir(char *dst, int len)\r
66{\r
67 extern char **g_argv;\r
68 int j;\r
69\r
70 strncpy(dst, g_argv[0], len);\r
71 len -= 32; // reserve\r
72 if (len < 0) len = 0;\r
73 dst[len] = 0;\r
74 for (j = strlen(dst); j > 0; j--)\r
75 if (dst[j] == '/') { dst[j+1] = 0; break; }\r
76}\r
77\r
78void emu_Init(void)\r
79{\r
80 // make temp buffer for alt renderer\r
81 PicoDraw2FB = malloc((8+320)*(8+240+8));\r
82 if (!PicoDraw2FB)\r
83 {\r
84 printf("PicoDraw2FB == 0\n");\r
85 }\r
86\r
87 // make dirs for saves, cfgs, etc.\r
88 mkdir("mds", 0777);\r
89 mkdir("srm", 0777);\r
90 mkdir("brm", 0777);\r
91 mkdir("cfg", 0777);\r
92\r
93 PicoInit();\r
94 PicoMessage = emu_msg_cb;\r
95 PicoMCDopenTray = emu_msg_tray_open;\r
96 PicoMCDcloseTray = menu_loop_tray;\r
97}\r
98\r
99\r
100static void scaling_update(void)\r
101{\r
102 PicoOpt &= ~0x4100;\r
103 switch (currentConfig.scaling) {\r
104 default: break; // off\r
105 case 1: // hw hor\r
106 case 2: PicoOpt |= 0x0100; break; // hw hor+vert\r
107 case 3: PicoOpt |= 0x4000; break; // sw hor\r
108 }\r
109}\r
110\r
111\r
112void emu_Deinit(void)\r
113{\r
114 // save SRAM\r
115 if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
116 emu_SaveLoadGame(0, 1);\r
117 SRam.changed = 0;\r
118 }\r
119\r
120 if (!(currentConfig.EmuOpt & 0x20)) {\r
121 config_writelrom(PicoConfigFile);\r
122#ifndef NO_SYNC\r
123 sync();\r
124#endif\r
125 }\r
126\r
127 free(PicoDraw2FB);\r
128\r
129 PicoExit();\r
130}\r
131\r
132void emu_prepareDefaultConfig(void)\r
133{\r
134 memset(&defaultConfig, 0, sizeof(defaultConfig));\r
135 defaultConfig.EmuOpt = 0x9f | 0x00700; // | <- ram_tmng, confirm_save, cd_leds\r
136 defaultConfig.s_PicoOpt = 0x0f | POPT_EXT_FM|POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC|POPT_ACC_SPRITES|POPT_EN_MCD_GFX;\r
137 defaultConfig.s_PsndRate = 44100;\r
138 defaultConfig.s_PicoRegion = 0; // auto\r
139 defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
140 defaultConfig.s_PicoCDBuffers = 0;\r
141 defaultConfig.Frameskip = 0; // auto\r
142 defaultConfig.CPUclock = 200;\r
143 defaultConfig.volume = 50;\r
144 defaultConfig.scaling = 0;\r
145 defaultConfig.turbo_rate = 15;\r
146}\r
147\r
148void emu_setDefaultConfig(void)\r
149{\r
150 memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));\r
151 PicoOpt = currentConfig.s_PicoOpt;\r
152 PsndRate = currentConfig.s_PsndRate;\r
153 PicoRegionOverride = currentConfig.s_PicoRegion;\r
154 PicoAutoRgnOrder = currentConfig.s_PicoAutoRgnOrder;\r
155 PicoCDBuffers = currentConfig.s_PicoCDBuffers;\r
156}\r
157\r
158static void textOut16(int x, int y, const char *text)\r
159{\r
160 int i,l,len=strlen(text);\r
161 unsigned int *screen = (unsigned int *)((unsigned short *)SCREEN_BUFFER + (x&~1) + y*SCREEN_WIDTH);\r
162\r
163 for (i = 0; i < len; i++)\r
164 {\r
165 for (l=0;l<16;l+=2)\r
166 {\r
167 unsigned char fd = fontdata8x8[((text[i])*8)+l/2];\r
168 int u = l+1;\r
169 if(fd&0x80) screen[l*SCREEN_WIDTH/2+0]=screen[u*SCREEN_WIDTH/2+0]=0xffffffff;\r
170 if(fd&0x40) screen[l*SCREEN_WIDTH/2+1]=screen[u*SCREEN_WIDTH/2+1]=0xffffffff;\r
171 if(fd&0x20) screen[l*SCREEN_WIDTH/2+2]=screen[u*SCREEN_WIDTH/2+2]=0xffffffff;\r
172 if(fd&0x10) screen[l*SCREEN_WIDTH/2+3]=screen[u*SCREEN_WIDTH/2+3]=0xffffffff;\r
173 if(fd&0x08) screen[l*SCREEN_WIDTH/2+4]=screen[u*SCREEN_WIDTH/2+4]=0xffffffff;\r
174 if(fd&0x04) screen[l*SCREEN_WIDTH/2+5]=screen[u*SCREEN_WIDTH/2+5]=0xffffffff;\r
175 if(fd&0x02) screen[l*SCREEN_WIDTH/2+6]=screen[u*SCREEN_WIDTH/2+6]=0xffffffff;\r
176 if(fd&0x01) screen[l*SCREEN_WIDTH/2+7]=screen[u*SCREEN_WIDTH/2+7]=0xffffffff;\r
177 }\r
178 screen += 8;\r
179 }\r
180}\r
181\r
182\r
183void osd_text(int x, int y, const char *text)\r
184{\r
185 int len = strlen(text)*8;\r
186\r
187 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
188 int *p, i, h;\r
189 x &= ~3; // align x\r
190 len = (len+3) >> 2;\r
191 for (h = 0; h < 8; h++) {\r
192 p = (int *) ((unsigned char *) gp2x_screen+x+SCREEN_WIDTH*(y+h));\r
193 for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
194 }\r
195 emu_textOut8(x, y, text);\r
196 } else {\r
197 int *p, i, h;\r
198 x &= ~1; // align x\r
199 len++;\r
200 for (h = 0; h < 16; h++) {\r
201 p = (int *) ((unsigned short *) gp2x_screen+x+SCREEN_WIDTH*(y+h));\r
202 for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
203 }\r
204 textOut16(x, y, text);\r
205 }\r
206}\r
207\r
208static void draw_cd_leds(void)\r
209{\r
210// static\r
211 int old_reg;\r
212// if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
213 old_reg = Pico_mcd->s68k_regs[0];\r
214\r
215 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
216 // 8-bit modes\r
217 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
218 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
219 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*2+ 4) =\r
220 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*3+ 4) =\r
221 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*4+ 4) = col_g;\r
222 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*2+12) =\r
223 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*3+12) =\r
224 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*4+12) = col_r;\r
225 } else {\r
226 // 16-bit modes\r
227 unsigned int *p = (unsigned int *)((short *)gp2x_screen + SCREEN_WIDTH*2+4);\r
228 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
229 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
230 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += SCREEN_WIDTH/2 - 12/2;\r
231 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += SCREEN_WIDTH/2 - 12/2;\r
232 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
233 }\r
234}\r
235\r
236static void draw_pico_ptr(void)\r
237{\r
238 unsigned short *p = (unsigned short *)gp2x_screen;\r
239\r
240 // only if pen enabled and for 16bit modes\r
241 if (pico_inp_mode == 0 || (PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) return;\r
242\r
243 if (!(Pico.video.reg[12]&1) && !(PicoOpt&POPT_DIS_32C_BORDER))\r
244 p += 32;\r
245\r
246 p += SCREEN_WIDTH * (pico_pen_y + PICO_PEN_ADJUST_Y);\r
247 p += pico_pen_x + PICO_PEN_ADJUST_X;\r
248 p[0] ^= 0xffff;\r
249 p[319] ^= 0xffff;\r
250 p[320] ^= 0xffff;\r
251 p[321] ^= 0xffff;\r
252 p[640] ^= 0xffff;\r
253}\r
254\r
255static int EmuScanEnd16(unsigned int num)\r
256{\r
257 unsigned char *ps=HighCol+8;\r
258 unsigned short *pd;\r
259 unsigned short *pal=HighPal;\r
260 int sh = Pico.video.reg[0xC]&8;\r
261 int len, mask = 0xff;\r
262\r
263 if (!(Pico.video.reg[1]&8)) num += 8;\r
264 pd=(unsigned short *)gp2x_screen + num*800*2 + 800/2 - 320*2/2;\r
265\r
266 if (Pico.m.dirtyPal)\r
267 PicoDoHighPal555(sh);\r
268\r
269 if (Pico.video.reg[12]&1) {\r
270 len = 320;\r
271 } else {\r
272 pd+=32;\r
273 len = 256;\r
274 }\r
275\r
276 if (!sh && (rendstatus & PDRAW_ACC_SPRITES))\r
277 mask=0x3f; // accurate sprites, upper bits are priority stuff\r
278\r
279\r
280 for (; len > 0; len--)\r
281 {\r
282 unsigned int p = pal[*ps++ & mask];\r
283 p |= p << 16;\r
284 *(unsigned int *)pd = p;\r
285 *(unsigned int *)(&pd[800]) = p;\r
286 pd += 2;\r
287 }\r
288\r
289 return 0;\r
290}\r
291\r
292static int EmuScanBegin8(unsigned int num)\r
293{\r
294 if (!(Pico.video.reg[1]&8)) num += 8;\r
295 DrawLineDest = (unsigned char *) gp2x_screen + SCREEN_WIDTH * num;\r
296\r
297 return 0;\r
298}\r
299\r
300int localPal[0x100];\r
301static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
302\r
303static void blit(const char *fps, const char *notice)\r
304{\r
305 int emu_opt = currentConfig.EmuOpt;\r
306\r
307 if (PicoOpt&0x10)\r
308 {\r
309 // 8bit fast renderer\r
310 if (Pico.m.dirtyPal) {\r
311 Pico.m.dirtyPal = 0;\r
312 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
313 // feed new palette to our device\r
314 gp2x_video_setpalette(localPal, 0x40);\r
315 }\r
316 // a hack for VR\r
317 if (PicoRead16Hook == PicoSVPRead16)\r
318 memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);\r
319 // do actual copy\r
320 vidCpyM2((unsigned char *)gp2x_screen+SCREEN_WIDTH*8, PicoDraw2FB+328*8);\r
321 }\r
322 else if (!(emu_opt&0x80))\r
323 {\r
324 // 8bit accurate renderer\r
325 if (Pico.m.dirtyPal)\r
326 {\r
327 int pallen = 0x40;\r
328 Pico.m.dirtyPal = 0;\r
329 if (Pico.video.reg[0xC]&8) // shadow/hilight mode\r
330 {\r
331 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
332 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
333 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
334 memcpy32(localPal+0xc0, localPal+0x40, 0x40);\r
335 pallen = 0x100;\r
336 }\r
337 else if (rendstatus & PDRAW_ACC_SPRITES) {\r
338 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
339 memcpy32(localPal+0x40, localPal, 0x40);\r
340 memcpy32(localPal+0x80, localPal, 0x40);\r
341 memcpy32(localPal+0xc0, localPal, 0x40);\r
342 pallen = 0x100;\r
343 }\r
344 else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes\r
345 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
346 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
347 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
348 pallen = 0xc0;\r
349 }\r
350 else {\r
351 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
352 }\r
353 if (pallen > 0xc0) {\r
354 localPal[0xc0] = 0x0000c000;\r
355 localPal[0xd0] = 0x00c00000;\r
356 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
357 localPal[0xf0] = 0x00ffffff;\r
358 }\r
359 gp2x_video_setpalette(localPal, pallen);\r
360 }\r
361 }\r
362\r
363 if (notice || (emu_opt & 2)) {\r
364 int h = SCREEN_HEIGHT-16;\r
365 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 16;\r
366 if (notice) osd_text(4, h, notice);\r
367 if (emu_opt & 2)\r
368 osd_text(osd_fps_x+24*2, h-8, fps);\r
369 }\r
370 if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))\r
371 draw_cd_leds();\r
372 if (PicoAHW & PAHW_PICO)\r
373 draw_pico_ptr();\r
374{\r
375//static int u=0;\r
376//memset((char *)gp2x_screen+800*471*2, (u++)>>1, 800*9*2);\r
377}\r
378\r
379 //gp2x_video_wait_vsync();\r
380 gp2x_video_flip();\r
381}\r
382\r
383\r
384// clears whole screen or just the notice area (in all buffers)\r
385static void clearArea(int full)\r
386{\r
387 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
388 // 8-bit renderers\r
389 if (full) gp2x_memset_all_buffers(0, 0xe0, SCREEN_WIDTH*240);\r
390 else gp2x_memset_all_buffers(SCREEN_WIDTH*232, 0xe0, SCREEN_WIDTH*8);\r
391 } else {\r
392 // 16bit accurate renderer\r
393 if (full) gp2x_memset_all_buffers(0, 0, SCREEN_WIDTH*SCREEN_HEIGHT*2);\r
394 else gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, 0, SCREEN_WIDTH*16*2);\r
395 }\r
396}\r
397\r
398\r
399static void vidResetMode(void)\r
400{\r
401 if (PicoOpt&0x10) {\r
402 gp2x_video_changemode(8);\r
403 } else if (currentConfig.EmuOpt&0x80) {\r
404 gp2x_video_changemode(16);\r
405 PicoDrawSetColorFormat(-1);\r
406 PicoScanEnd = EmuScanEnd16;\r
407 } else {\r
408 gp2x_video_changemode(8);\r
409 PicoDrawSetColorFormat(2);\r
410 PicoScanBegin = EmuScanBegin8;\r
411 }\r
412 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
413 // setup pal for 8-bit modes\r
414 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
415 localPal[0xd0] = 0x00c00000;\r
416 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
417 localPal[0xf0] = 0x00ffffff;\r
418 gp2x_video_setpalette(localPal, 0x100);\r
419 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
420 gp2x_video_flip();\r
421 }\r
422 Pico.m.dirtyPal = 1;\r
423 // reset scaling\r
424 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
425 gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
426 else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
427}\r
428\r
429\r
430static void emu_msg_cb(const char *msg)\r
431{\r
432 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
433 // 8-bit renderers\r
434 gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16), 0xe0, SCREEN_WIDTH*16);\r
435 osd_text(4, SCREEN_HEIGHT-16, msg);\r
436 gp2x_memcpy_all_buffers((char *)gp2x_screen+SCREEN_WIDTH*(SCREEN_HEIGHT-16),\r
437 SCREEN_WIDTH*(SCREEN_HEIGHT-16), SCREEN_WIDTH*16);\r
438 } else {\r
439 // 16bit accurate renderer\r
440 gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, 0, SCREEN_WIDTH*16*2);\r
441 osd_text(4, SCREEN_HEIGHT-16, msg);\r
442 gp2x_memcpy_all_buffers((char *)gp2x_screen+SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2,\r
443 SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, SCREEN_WIDTH*16*2);\r
444 }\r
445 gettimeofday(&noticeMsgTime, 0);\r
446 noticeMsgTime.tv_sec -= 2;\r
447\r
448 /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
449 reset_timing = 1;\r
450}\r
451\r
452static void emu_state_cb(const char *str)\r
453{\r
454 clearArea(0);\r
455 blit("", str);\r
456}\r
457\r
458static void emu_msg_tray_open(void)\r
459{\r
460 strcpy(noticeMsg, "CD tray opened");\r
461 gettimeofday(&noticeMsgTime, 0);\r
462}\r
463\r
464static void RunEventsPico(unsigned int events, unsigned int gp2x_keys)\r
465{\r
466 int ret, px, py, lim_x;\r
467 static int pdown_frames = 0;\r
468\r
469 emu_RunEventsPico(events);\r
470\r
471 if (pico_inp_mode == 0) return;\r
472\r
473 // for F200\r
474 ret = gp2x_touchpad_read(&px, &py);\r
475 if (ret >= 0)\r
476 {\r
477 if (ret > 35000)\r
478 {\r
479 if (pdown_frames++ > 5)\r
480 PicoPad[0] |= 0x20;\r
481\r
482 pico_pen_x = px;\r
483 pico_pen_y = py;\r
484 if (!(Pico.video.reg[12]&1)) {\r
485 pico_pen_x -= 32;\r
486 if (pico_pen_x < 0) pico_pen_x = 0;\r
487 if (pico_pen_x > 248) pico_pen_x = 248;\r
488 }\r
489 if (pico_pen_y > 224) pico_pen_y = 224;\r
490 }\r
491 else\r
492 pdown_frames = 0;\r
493\r
494 //if (ret == 0)\r
495 // PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
496 }\r
497\r
498 PicoPad[0] &= ~0x0f; // release UDLR\r
499 if (gp2x_keys & GP2X_UP) pico_pen_y--;\r
500 if (gp2x_keys & GP2X_DOWN) pico_pen_y++;\r
501 if (gp2x_keys & GP2X_LEFT) pico_pen_x--;\r
502 if (gp2x_keys & GP2X_RIGHT) pico_pen_x++;\r
503\r
504 lim_x = (Pico.video.reg[12]&1) ? 319 : 255;\r
505 if (pico_pen_y < 8) pico_pen_y = 8;\r
506 if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y;\r
507 if (pico_pen_x < 0) pico_pen_x = 0;\r
508 if (pico_pen_x > lim_x-PICO_PEN_ADJUST_X) pico_pen_x = lim_x-PICO_PEN_ADJUST_X;\r
509\r
510 PicoPicohw.pen_pos[0] = pico_pen_x;\r
511 if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;\r
512 PicoPicohw.pen_pos[0] += 0x3c;\r
513 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
514}\r
515\r
516static void update_volume(int has_changed, int is_up)\r
517{\r
518 static int prev_frame = 0, wait_frames = 0;\r
519 int vol = currentConfig.volume;\r
520\r
521 if (has_changed)\r
522 {\r
523 if (vol < 5 && (PicoOpt&8) && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
524 wait_frames++;\r
525 else {\r
526 if (is_up) {\r
527 if (vol < 99) vol++;\r
528 } else {\r
529 if (vol > 0) vol--;\r
530 }\r
531 wait_frames = 0;\r
532 gp2x_sound_volume(vol, vol);\r
533 currentConfig.volume = vol;\r
534 }\r
535 sprintf(noticeMsg, "VOL: %02i", vol);\r
536 gettimeofday(&noticeMsgTime, 0);\r
537 prev_frame = Pico.m.frame_count;\r
538 }\r
539\r
540 // set the right mixer func\r
541 if (!(PicoOpt&8)) return; // just use defaults for mono\r
542 if (vol >= 5)\r
543 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
544 else {\r
545 mix_32_to_16l_level = 5 - vol;\r
546 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
547 }\r
548}\r
549\r
550static void RunEvents(unsigned int which)\r
551{\r
552 if (which & 0x1800) // save or load (but not both)\r
553 {\r
554 int do_it = 1;\r
555 if ( emu_checkSaveFile(state_slot) &&\r
556 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load\r
557 (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
558 unsigned long keys;\r
559 blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
560 while ( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
561 usleep(50*1024);\r
562 if (keys & GP2X_X) do_it = 0;\r
563 while ( gp2x_joystick_read(1) & (GP2X_X|GP2X_Y) ) // wait for release\r
564 usleep(50*1024);\r
565 clearArea(0);\r
566 }\r
567 if (do_it) {\r
568 osd_text(4, SCREEN_HEIGHT-16, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
569 PicoStateProgressCB = emu_state_cb;\r
570 gp2x_memcpy_all_buffers(gp2x_screen, 0, SCREEN_WIDTH*SCREEN_HEIGHT*2);\r
571 emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
572 PicoStateProgressCB = NULL;\r
573 }\r
574\r
575 reset_timing = 1;\r
576 }\r
577 if (which & 0x0400) // switch renderer\r
578 {\r
579 if ( PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
580 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
581 else currentConfig.EmuOpt &= ~0x80;\r
582\r
583 vidResetMode();\r
584\r
585 if (PicoOpt&0x10) {\r
586 strcpy(noticeMsg, " 8bit fast renderer");\r
587 } else if (currentConfig.EmuOpt&0x80) {\r
588 strcpy(noticeMsg, "16bit accurate renderer");\r
589 } else {\r
590 strcpy(noticeMsg, " 8bit accurate renderer");\r
591 }\r
592\r
593 gettimeofday(&noticeMsgTime, 0);\r
594 }\r
595 if (which & 0x0300)\r
596 {\r
597 if(which&0x0200) {\r
598 state_slot -= 1;\r
599 if(state_slot < 0) state_slot = 9;\r
600 } else {\r
601 state_slot += 1;\r
602 if(state_slot > 9) state_slot = 0;\r
603 }\r
604 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
605 gettimeofday(&noticeMsgTime, 0);\r
606 }\r
607 if (which & 0x0080) {\r
608 engineState = PGS_Menu;\r
609 }\r
610}\r
611\r
612static void updateKeys(void)\r
613{\r
614 unsigned int keys, keys2, allActions[2] = { 0, 0 }, events;\r
615 static unsigned int prevEvents = 0;\r
616 int joy, i;\r
617\r
618 keys = gp2x_joystick_read(0);\r
619 if (keys & GP2X_SELECT) {\r
620 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
621 // wait until select is released, so menu would not resume game\r
622 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
623 }\r
624\r
625 keys &= CONFIGURABLE_KEYS;\r
626 keys2 = keys;\r
627\r
628 for (i = 0; i < 32; i++)\r
629 {\r
630 if (keys2 & (1 << i))\r
631 {\r
632 int pl, acts = currentConfig.KeyBinds[i];\r
633 if (!acts) continue;\r
634 pl = (acts >> 16) & 1;\r
635 if (kb_combo_keys & (1 << i))\r
636 {\r
637 int u = i+1, acts_c = acts & kb_combo_acts;\r
638 // let's try to find the other one\r
639 if (acts_c) {\r
640 for (; u < 32; u++)\r
641 if ( (keys2 & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {\r
642 allActions[pl] |= acts_c & currentConfig.KeyBinds[u];\r
643 keys2 &= ~((1 << i) | (1 << u));\r
644 break;\r
645 }\r
646 }\r
647 // add non-combo actions if combo ones were not found\r
648 if (!acts_c || u == 32)\r
649 allActions[pl] |= acts & ~kb_combo_acts;\r
650 } else {\r
651 allActions[pl] |= acts;\r
652 }\r
653 }\r
654 }\r
655\r
656 // add joy inputs\r
657 if (num_of_joys > 0)\r
658 {\r
659 gp2x_usbjoy_update();\r
660 for (joy = 0; joy < num_of_joys; joy++) {\r
661 int btns = gp2x_usbjoy_check2(joy);\r
662 for (i = 0; i < 32; i++) {\r
663 if (btns & (1 << i)) {\r
664 int acts = currentConfig.JoyBinds[joy][i];\r
665 int pl = (acts >> 16) & 1;\r
666 allActions[pl] |= acts;\r
667 }\r
668 }\r
669 }\r
670 }\r
671\r
672 PicoPad[0] = allActions[0] & 0xfff;\r
673 PicoPad[1] = allActions[1] & 0xfff;\r
674\r
675 if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);\r
676 if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);\r
677\r
678 events = (allActions[0] | allActions[1]) >> 16;\r
679\r
680 // volume is treated in special way and triggered every frame\r
681 if (events & 0x6000)\r
682 update_volume(1, events & 0x2000);\r
683\r
684 if ((events ^ prevEvents) & 0x40) {\r
685 emu_changeFastForward(events & 0x40);\r
686 update_volume(0, 0);\r
687 reset_timing = 1;\r
688 }\r
689\r
690 events &= ~prevEvents;\r
691\r
692 if (PicoAHW == PAHW_PICO)\r
693 RunEventsPico(events, keys);\r
694 if (events) RunEvents(events);\r
695 if (movie_data) emu_updateMovie();\r
696\r
697 prevEvents = (allActions[0] | allActions[1]) >> 16;\r
698}\r
699\r
700\r
701static void updateSound(int len)\r
702{\r
703 if (PicoOpt&8) len<<=1;\r
704\r
705 /* avoid writing audio when lagging behind to prevent audio lag */\r
706 if (PicoSkipFrame != 2)\r
707 gp2x_sound_write(PsndOut, len<<1);\r
708}\r
709\r
710\r
711static void SkipFrame(int do_audio)\r
712{\r
713 PicoSkipFrame=do_audio ? 1 : 2;\r
714 PicoFrame();\r
715 PicoSkipFrame=0;\r
716}\r
717\r
718\r
719void emu_forcedFrame(int opts)\r
720{\r
721 int po_old = PicoOpt;\r
722 int eo_old = currentConfig.EmuOpt;\r
723\r
724 PicoOpt &= ~0x10;\r
725 PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
726 currentConfig.EmuOpt |= 0x80;\r
727\r
728 //vidResetMode();\r
729 PicoDrawSetColorFormat(-1);\r
730 PicoScanEnd = EmuScanEnd16;\r
731 Pico.m.dirtyPal = 1;\r
732 PicoFrameDrawOnly();\r
733\r
734/*\r
735 if (!(Pico.video.reg[12]&1)) {\r
736 vidCpyM2 = vidCpyM2_32col;\r
737 clearArea(1);\r
738 } else vidCpyM2 = vidCpyM2_40col;\r
739\r
740 vidCpyM2((unsigned char *)gp2x_screen+SCREEN_WIDTH*8, PicoDraw2FB+328*8);\r
741 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
742 gp2x_video_setpalette(localPal, 0x40);\r
743*/\r
744 PicoOpt = po_old;\r
745 currentConfig.EmuOpt = eo_old;\r
746}\r
747\r
748static void simpleWait(int thissec, int lim_time)\r
749{\r
750 struct timeval tval;\r
751\r
752 spend_cycles(1024);\r
753 gettimeofday(&tval, 0);\r
754 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
755\r
756 while (tval.tv_usec < lim_time)\r
757 {\r
758 spend_cycles(1024);\r
759 gettimeofday(&tval, 0);\r
760 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
761 }\r
762}\r
763\r
764\r
765void emu_Loop(void)\r
766{\r
767 static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;\r
768 char fpsbuff[24]; // fps count c string\r
769 struct timeval tval; // timing\r
770 int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
771 int frames_done, frames_shown, thissec; // actual frames\r
772 int oldmodes = 0, target_fps, target_frametime, lim_time, vsync_offset, i;\r
773 char *notice = 0;\r
774\r
775 printf("entered emu_Loop()\n");\r
776\r
777 fpsbuff[0] = 0;\r
778\r
779 // make sure we are in correct mode\r
780 vidResetMode();\r
781 scaling_update();\r
782 Pico.m.dirtyPal = 1;\r
783 oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
784 emu_findKeyBindCombos();\r
785\r
786 // pal/ntsc might have changed, reset related stuff\r
787 target_fps = Pico.m.pal ? 50 : 60;\r
788 target_frametime = 1000000/target_fps;\r
789 reset_timing = 1;\r
790\r
791 // prepare sound stuff\r
792 if (currentConfig.EmuOpt & 4)\r
793 {\r
794 int snd_excess_add;\r
795 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old)\r
796 PsndRerate(Pico.m.frame_count ? 1 : 0);\r
797\r
798 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
799 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
800 PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
801 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
802 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
803 PicoWriteSound = updateSound;\r
804 update_volume(0, 0);\r
805 memset(sndBuffer, 0, sizeof(sndBuffer));\r
806 PsndOut = sndBuffer;\r
807 PsndRate_old = PsndRate;\r
808 PicoOpt_old = PicoOpt;\r
809 pal_old = Pico.m.pal;\r
810 } else {\r
811 PsndOut = NULL;\r
812 }\r
813\r
814 // prepare CD buffer\r
815 if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r
816\r
817 // calc vsync offset to sync timing code with vsync\r
818 if (currentConfig.EmuOpt&0x2000) {\r
819 gettimeofday(&tval, 0);\r
820 gp2x_video_wait_vsync();\r
821 gettimeofday(&tval, 0);\r
822 vsync_offset = tval.tv_usec;\r
823 while (vsync_offset >= target_frametime)\r
824 vsync_offset -= target_frametime;\r
825 if (!vsync_offset) vsync_offset++;\r
826 printf("vsync_offset: %i\n", vsync_offset);\r
827 } else\r
828 vsync_offset = 0;\r
829\r
830 frames_done = frames_shown = thissec =\r
831 pframes_done = pframes_shown = pthissec = 0;\r
832\r
833 // loop\r
834 while (engineState == PGS_Running)\r
835 {\r
836 int modes;\r
837\r
838 gettimeofday(&tval, 0);\r
839 if (reset_timing) {\r
840 reset_timing = 0;\r
841 pthissec = tval.tv_sec;\r
842 pframes_shown = pframes_done = tval.tv_usec/target_frametime;\r
843 }\r
844\r
845 // show notice message?\r
846 if (noticeMsgTime.tv_sec)\r
847 {\r
848 static int noticeMsgSum;\r
849 if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
850 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
851 clearArea(0);\r
852 notice = 0;\r
853 } else {\r
854 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
855 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
856 notice = noticeMsg;\r
857 }\r
858 }\r
859\r
860 // check for mode changes\r
861 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
862 if (modes != oldmodes)\r
863 {\r
864 int scalex = SCREEN_WIDTH;\r
865 osd_fps_x = OSD_FPS_X;\r
866 if (modes & 4) {\r
867 vidCpyM2 = vidCpyM2_40col;\r
868 } else {\r
869 if (PicoOpt & 0x100) {\r
870 vidCpyM2 = vidCpyM2_32col_nobord;\r
871 scalex = 256;\r
872 osd_fps_x = OSD_FPS_X - 64;\r
873 } else {\r
874 vidCpyM2 = vidCpyM2_32col;\r
875 }\r
876 }\r
877 if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
878 gp2x_video_RGB_setscaling(8, scalex, 224);\r
879 else gp2x_video_RGB_setscaling(0, scalex, 240);\r
880 oldmodes = modes;\r
881 clearArea(1);\r
882 }\r
883\r
884 // second changed?\r
885 if (thissec != tval.tv_sec)\r
886 {\r
887#ifdef BENCHMARK\r
888 static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
889 if (++bench == 10) {\r
890 bench = 0;\r
891 bench_fps_s = bench_fps;\r
892 bf[bfp++ & 3] = bench_fps;\r
893 bench_fps = 0;\r
894 }\r
895 bench_fps += frames_shown;\r
896 sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
897#else\r
898 if (currentConfig.EmuOpt & 2) {\r
899 //sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
900 sprintf(fpsbuff, "%4i", frames_shown);\r
901 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
902 }\r
903#endif\r
904 frames_shown = frames_done = 0;\r
905 thissec = tval.tv_sec;\r
906 }\r
907#ifdef PFRAMES\r
908 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
909#endif\r
910\r
911 if (pthissec != tval.tv_sec)\r
912 {\r
913 if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
914 pframes_done = pframes_shown = 0;\r
915 } else {\r
916 // it is quite common for this implementation to leave 1 fame unfinished\r
917 // when second changes, but we don't want buffer to starve.\r
918 if(PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {\r
919 updateKeys();\r
920 SkipFrame(1); pframes_done++;\r
921 }\r
922\r
923 pframes_done -= target_fps; if (pframes_done < 0) pframes_done = 0;\r
924 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;\r
925 if (pframes_shown > pframes_done) pframes_shown = pframes_done;\r
926 }\r
927 pthissec = tval.tv_sec;\r
928 }\r
929\r
930 lim_time = (pframes_done+1) * target_frametime + vsync_offset;\r
931 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
932 {\r
933 for(i = 0; i < currentConfig.Frameskip; i++) {\r
934 updateKeys();\r
935 SkipFrame(1); pframes_done++; frames_done++;\r
936 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
937 gettimeofday(&tval, 0);\r
938 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
939 if (tval.tv_usec < lim_time) { // we are too fast\r
940 simpleWait(pthissec, lim_time);\r
941 }\r
942 }\r
943 lim_time += target_frametime;\r
944 }\r
945 }\r
946 else if (tval.tv_usec > lim_time) // auto frameskip\r
947 {\r
948 // no time left for this frame - skip\r
949 if (tval.tv_usec - lim_time >= 300000) {\r
950 /* something caused a slowdown for us (disk access? cache flush?)\r
951 * try to recover by resetting timing... */\r
952 reset_timing = 1;\r
953 continue;\r
954 }\r
955 updateKeys();\r
956 SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;\r
957 continue;\r
958 }\r
959\r
960 updateKeys();\r
961 PicoFrame();\r
962\r
963 // check time\r
964 gettimeofday(&tval, 0);\r
965 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
966\r
967 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
968 reset_timing = 1;\r
969/* else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
970 {\r
971 // sleep or vsync if we are still too fast\r
972 // usleep sleeps for ~20ms minimum, so it is not a solution here\r
973 if (!reset_timing && tval.tv_usec < lim_time)\r
974 {\r
975 // we are too fast\r
976 if (vsync_offset) {\r
977 if (lim_time - tval.tv_usec > target_frametime/2)\r
978 simpleWait(pthissec, lim_time - target_frametime/4);\r
979 gp2x_video_wait_vsync();\r
980 } else {\r
981 simpleWait(pthissec, lim_time);\r
982 }\r
983 }\r
984 }\r
985*/\r
986 blit(fpsbuff, notice);\r
987\r
988 pframes_done++; pframes_shown++;\r
989 frames_done++; frames_shown++;\r
990 }\r
991\r
992 emu_changeFastForward(0);\r
993\r
994 if (PicoAHW & PAHW_MCD) PicoCDBufferFree();\r
995\r
996 // save SRAM\r
997 if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
998 emu_state_cb("Writing SRAM/BRAM..");\r
999 emu_SaveLoadGame(0, 1);\r
1000 SRam.changed = 0;\r
1001 }\r
1002\r
1003 // if in 8bit mode, generate 16bit image for menu background\r
1004 if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
1005 emu_forcedFrame(POPT_EN_SOFTSCALE);\r
1006}\r
1007\r
1008\r
1009void emu_ResetGame(void)\r
1010{\r
1011 PicoReset();\r
1012 reset_timing = 1;\r
1013}\r
1014\r
fast MegaDrive/MegaCD/32X emulator