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more unification; replace some magic bits to defines
[libpicofe.git] / gp2x / emu.c
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1// (c) Copyright 2006-2009 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 <stdarg.h>\r
12\r
13#include "plat_gp2x.h"\r
14#include "soc.h"\r
15#include "../common/plat.h"\r
16#include "../common/menu.h"\r
17#include "../common/arm_utils.h"\r
18#include "../common/fonts.h"\r
19#include "../common/emu.h"\r
20#include "../common/config.h"\r
21#include "../linux/sndout_oss.h"\r
22#include "version.h"\r
23\r
24#include <pico/pico_int.h>\r
25#include <pico/patch.h>\r
26#include <pico/sound/mix.h>\r
27#include <zlib/zlib.h>\r
28\r
29//#define PFRAMES\r
30\r
31#ifdef BENCHMARK\r
32#define OSD_FPS_X 220\r
33#else\r
34#define OSD_FPS_X 260\r
35#endif\r
36\r
37\r
38extern int crashed_940;\r
39\r
40static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
41static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
42static int osd_fps_x;\r
43static int gp2x_old_gamma = 100;\r
44static char noticeMsg[40];\r
45unsigned char *PicoDraw2FB = NULL; // temporary buffer for alt renderer\r
46int reset_timing = 0;\r
47\r
48#define PICO_PEN_ADJUST_X 4\r
49#define PICO_PEN_ADJUST_Y 2\r
50static int pico_pen_x = 320/2, pico_pen_y = 240/2;\r
51\r
52static void emu_msg_tray_open(void);\r
53\r
54\r
55void plat_status_msg(const char *format, ...)\r
56{\r
57 va_list vl;\r
58\r
59 va_start(vl, format);\r
60 vsnprintf(noticeMsg, sizeof(noticeMsg), format, vl);\r
61 va_end(vl);\r
62\r
63 gettimeofday(&noticeMsgTime, 0);\r
64}\r
65\r
66int emu_getMainDir(char *dst, int len)\r
67{\r
68 extern char **g_argv;\r
69 int j;\r
70\r
71 strncpy(dst, g_argv[0], len);\r
72 len -= 32; // reserve\r
73 if (len < 0) len = 0;\r
74 dst[len] = 0;\r
75 for (j = strlen(dst); j > 0; j--)\r
76 if (dst[j] == '/') { dst[j+1] = 0; break; }\r
77\r
78 return j + 1;\r
79}\r
80\r
81void emu_Init(void)\r
82{\r
83 // make temp buffer for alt renderer\r
84 PicoDraw2FB = malloc((8+320)*(8+240+8));\r
85 if (!PicoDraw2FB)\r
86 {\r
87 printf("PicoDraw2FB == 0\n");\r
88 }\r
89\r
90 // make dirs for saves, cfgs, etc.\r
91 mkdir("mds", 0777);\r
92 mkdir("srm", 0777);\r
93 mkdir("brm", 0777);\r
94 mkdir("cfg", 0777);\r
95\r
96 PicoInit();\r
97 PicoMessage = plat_status_msg_busy_next;\r
98 PicoMCDopenTray = emu_msg_tray_open;\r
99 PicoMCDcloseTray = menu_loop_tray;\r
100}\r
101\r
102\r
103static void scaling_update(void)\r
104{\r
105 PicoOpt &= ~(POPT_DIS_32C_BORDER|POPT_EN_SOFTSCALE);\r
106 switch (currentConfig.scaling) {\r
107 default:break;\r
108 case EOPT_SCALE_HW_H:\r
109 case EOPT_SCALE_HW_HV:\r
110 PicoOpt |= POPT_DIS_32C_BORDER;\r
111 break;\r
112 case EOPT_SCALE_SW_H:\r
113 PicoOpt |= POPT_EN_SOFTSCALE;\r
114 break;\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_lcd_gamma(100, 0);\r
137}\r
138\r
139void emu_prepareDefaultConfig(void)\r
140{\r
141 gp2x_soc_t soc;\r
142\r
143 memset(&defaultConfig, 0, sizeof(defaultConfig));\r
144 defaultConfig.EmuOpt = 0x9d | EOPT_RAM_TIMINGS | 0x600; // | <- confirm_save, cd_leds\r
145 defaultConfig.s_PicoOpt = 0x0f | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC|POPT_ACC_SPRITES;\r
146 defaultConfig.s_PsndRate = 44100;\r
147 defaultConfig.s_PicoRegion = 0; // auto\r
148 defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
149 defaultConfig.s_PicoCDBuffers = 0;\r
150 defaultConfig.Frameskip = -1; // auto\r
151 defaultConfig.CPUclock = default_cpu_clock;\r
152 defaultConfig.volume = 50;\r
153 defaultConfig.gamma = 100;\r
154 defaultConfig.scaling = 0;\r
155 defaultConfig.turbo_rate = 15;\r
156\r
157 soc = soc_detect();\r
158 if (soc == SOCID_MMSP2)\r
159 defaultConfig.s_PicoOpt |= POPT_EXT_FM;\r
160}\r
161\r
162static void osd_text(int x, int y, const char *text)\r
163{\r
164 int len = strlen(text)*8;\r
165 int *p, i, h, offs;\r
166\r
167 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
168 len = (len+3) >> 2;\r
169 for (h = 0; h < 8; h++) {\r
170 offs = (x + g_screen_width * (y+h)) & ~3;\r
171 p = (int *) ((char *)g_screen_ptr + offs);\r
172 for (i = len; i; i--, p++)\r
173 *p = 0xe0e0e0e0;\r
174 }\r
175 emu_textOut8(x, y, text);\r
176 } else {\r
177 len = (len+1) >> 1;\r
178 for (h = 0; h < 8; h++) {\r
179 offs = (x + g_screen_width * (y+h)) & ~1;\r
180 p = (int *) ((short *)g_screen_ptr + offs);\r
181 for (i = len; i; i--, p++)\r
182 *p = (*p >> 2) & 0x39e7;\r
183 }\r
184 emu_textOut16(x, y, text);\r
185 }\r
186}\r
187\r
188static void draw_cd_leds(void)\r
189{\r
190 int old_reg;\r
191 old_reg = Pico_mcd->s68k_regs[0];\r
192\r
193 if ((PicoOpt & POPT_ALT_RENDERER) || !(currentConfig.EmuOpt & EOPT_16BPP)) {\r
194 // 8-bit modes\r
195 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
196 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
197 *(unsigned int *)((char *)g_screen_ptr + 320*2+ 4) =\r
198 *(unsigned int *)((char *)g_screen_ptr + 320*3+ 4) =\r
199 *(unsigned int *)((char *)g_screen_ptr + 320*4+ 4) = col_g;\r
200 *(unsigned int *)((char *)g_screen_ptr + 320*2+12) =\r
201 *(unsigned int *)((char *)g_screen_ptr + 320*3+12) =\r
202 *(unsigned int *)((char *)g_screen_ptr + 320*4+12) = col_r;\r
203 } else {\r
204 // 16-bit modes\r
205 unsigned int *p = (unsigned int *)((short *)g_screen_ptr + 320*2+4);\r
206 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
207 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
208 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
209 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
210 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
211 }\r
212}\r
213\r
214static void draw_pico_ptr(void)\r
215{\r
216 unsigned short *p = (unsigned short *)g_screen_ptr;\r
217\r
218 // only if pen enabled and for 16bit modes\r
219 if (pico_inp_mode == 0 || (PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) return;\r
220\r
221 if (!(Pico.video.reg[12]&1) && !(PicoOpt&POPT_DIS_32C_BORDER))\r
222 p += 32;\r
223\r
224 p += 320 * (pico_pen_y + PICO_PEN_ADJUST_Y);\r
225 p += pico_pen_x + PICO_PEN_ADJUST_X;\r
226 p[0] ^= 0xffff;\r
227 p[319] ^= 0xffff;\r
228 p[320] ^= 0xffff;\r
229 p[321] ^= 0xffff;\r
230 p[640] ^= 0xffff;\r
231}\r
232\r
233static int EmuScanBegin16(unsigned int num)\r
234{\r
235 if (!(Pico.video.reg[1]&8)) num += 8;\r
236 DrawLineDest = (unsigned short *) g_screen_ptr + g_screen_width * num;\r
237\r
238 return 0;\r
239}\r
240\r
241static int EmuScanBegin8(unsigned int num)\r
242{\r
243 if (!(Pico.video.reg[1]&8)) num += 8;\r
244 DrawLineDest = (unsigned char *) g_screen_ptr + g_screen_width * num;\r
245\r
246 return 0;\r
247}\r
248\r
249int localPal[0x100];\r
250static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
251\r
252static void blit(const char *fps, const char *notice)\r
253{\r
254 int emu_opt = currentConfig.EmuOpt;\r
255\r
256 if (PicoOpt & POPT_ALT_RENDERER)\r
257 {\r
258 // 8bit fast renderer\r
259 if (Pico.m.dirtyPal) {\r
260 Pico.m.dirtyPal = 0;\r
261 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
262 // feed new palette to our device\r
263 gp2x_video_setpalette(localPal, 0x40);\r
264 }\r
265 // a hack for VR\r
266 if (PicoRead16Hook == PicoSVPRead16)\r
267 memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);\r
268 // do actual copy\r
269 vidCpyM2((unsigned char *)g_screen_ptr+320*8, PicoDraw2FB+328*8);\r
270 }\r
271 else if (!(emu_opt & EOPT_16BPP))\r
272 {\r
273 // 8bit accurate renderer\r
274 if (Pico.m.dirtyPal)\r
275 {\r
276 int pallen = 0xc0;\r
277 Pico.m.dirtyPal = 0;\r
278 if (Pico.video.reg[0xC]&8) // shadow/hilight mode\r
279 {\r
280 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
281 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
282 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
283 memcpy32(localPal+0xc0, localPal+0x40, 0x40);\r
284 pallen = 0x100;\r
285 }\r
286 else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes\r
287 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
288 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
289 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
290 }\r
291 else {\r
292 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
293 memcpy32(localPal+0x80, localPal, 0x40); // for spr prio mess\r
294 }\r
295 if (pallen > 0xc0) {\r
296 localPal[0xc0] = 0x0000c000;\r
297 localPal[0xd0] = 0x00c00000;\r
298 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
299 localPal[0xf0] = 0x00ffffff;\r
300 }\r
301 gp2x_video_setpalette(localPal, pallen);\r
302 }\r
303 }\r
304\r
305 if (notice || (emu_opt & 2)) {\r
306 int h = 232;\r
307 if (currentConfig.scaling == EOPT_SCALE_HW_HV && !(Pico.video.reg[1]&8))\r
308 h -= 8;\r
309 if (notice)\r
310 osd_text(4, h, notice);\r
311 if (emu_opt & 2)\r
312 osd_text(osd_fps_x, h, fps);\r
313 }\r
314 if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))\r
315 draw_cd_leds();\r
316 if (PicoAHW & PAHW_PICO)\r
317 draw_pico_ptr();\r
318\r
319 gp2x_video_flip();\r
320\r
321 if (!(PicoOpt & POPT_ALT_RENDERER)) {\r
322 if (!(Pico.video.reg[1]&8)) {\r
323 if (currentConfig.EmuOpt & EOPT_16BPP)\r
324 DrawLineDest = (unsigned short *) g_screen_ptr + 320*8;\r
325 else\r
326 DrawLineDest = (unsigned char *) g_screen_ptr + 320*8;\r
327 } else {\r
328 DrawLineDest = g_screen_ptr;\r
329 }\r
330 }\r
331}\r
332\r
333// clears whole screen or just the notice area (in all buffers)\r
334static void clearArea(int full)\r
335{\r
336 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
337 // 8-bit renderers\r
338 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
339 else gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
340 } else {\r
341 // 16bit accurate renderer\r
342 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
343 else gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
344 }\r
345}\r
346\r
347void plat_status_msg_busy_next(const char *msg)\r
348{\r
349 clearArea(0);\r
350 blit("", msg);\r
351\r
352 /* assumption: msg_busy_next gets called only when\r
353 * something slow is about to happen */\r
354 reset_timing = 1;\r
355}\r
356\r
357void plat_status_msg_busy_first(const char *msg)\r
358{\r
359 gp2x_memcpy_all_buffers(g_screen_ptr, 0, 320*240*2);\r
360 plat_status_msg_busy_next(msg);\r
361}\r
362\r
363static void vidResetMode(void)\r
364{\r
365 if (PicoOpt & POPT_ALT_RENDERER) {\r
366 gp2x_video_changemode(8);\r
367 } else if (currentConfig.EmuOpt & EOPT_16BPP) {\r
368 gp2x_video_changemode(16);\r
369 PicoDrawSetColorFormat(1);\r
370 PicoScanBegin = EmuScanBegin16;\r
371 } else {\r
372 gp2x_video_changemode(8);\r
373 PicoDrawSetColorFormat(2);\r
374 PicoScanBegin = EmuScanBegin8;\r
375 }\r
376 if ((PicoOpt & POPT_ALT_RENDERER) || !(currentConfig.EmuOpt & EOPT_16BPP)) {\r
377 // setup pal for 8-bit modes\r
378 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
379 localPal[0xd0] = 0x00c00000;\r
380 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
381 localPal[0xf0] = 0x00ffffff;\r
382 gp2x_video_setpalette(localPal, 0x100);\r
383 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
384 gp2x_video_flip();\r
385 }\r
386 Pico.m.dirtyPal = 1;\r
387 // reset scaling\r
388 if (currentConfig.scaling == EOPT_SCALE_HW_HV && !(Pico.video.reg[1]&8))\r
389 gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
390 else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
391}\r
392\r
393void plat_video_toggle_renderer(void)\r
394{\r
395 if (PicoOpt & POPT_ALT_RENDERER) {\r
396 PicoOpt &= ~POPT_ALT_RENDERER;\r
397 currentConfig.EmuOpt |= EOPT_16BPP;\r
398 } else if (!(currentConfig.EmuOpt & EOPT_16BPP))\r
399 PicoOpt |= POPT_ALT_RENDERER;\r
400 else\r
401 currentConfig.EmuOpt &= ~EOPT_16BPP;\r
402\r
403 vidResetMode();\r
404\r
405 if (PicoOpt & POPT_ALT_RENDERER) {\r
406 plat_status_msg(" 8bit fast renderer");\r
407 } else if (currentConfig.EmuOpt & EOPT_16BPP) {\r
408 plat_status_msg("16bit accurate renderer");\r
409 } else {\r
410 plat_status_msg(" 8bit accurate renderer");\r
411 }\r
412}\r
413\r
414static void emu_msg_tray_open(void)\r
415{\r
416 plat_status_msg("CD tray opened");\r
417}\r
418\r
419static void RunEventsPico(unsigned int events)\r
420{\r
421 int ret, px, py, lim_x;\r
422 static int pdown_frames = 0;\r
423\r
424 emu_RunEventsPico(events);\r
425\r
426 if (pico_inp_mode == 0) return;\r
427\r
428 // for F200\r
429 ret = gp2x_touchpad_read(&px, &py);\r
430 if (ret >= 0)\r
431 {\r
432 if (ret > 35000)\r
433 {\r
434 if (pdown_frames++ > 5)\r
435 PicoPad[0] |= 0x20;\r
436\r
437 pico_pen_x = px;\r
438 pico_pen_y = py;\r
439 if (!(Pico.video.reg[12]&1)) {\r
440 pico_pen_x -= 32;\r
441 if (pico_pen_x < 0) pico_pen_x = 0;\r
442 if (pico_pen_x > 248) pico_pen_x = 248;\r
443 }\r
444 if (pico_pen_y > 224) pico_pen_y = 224;\r
445 }\r
446 else\r
447 pdown_frames = 0;\r
448\r
449 //if (ret == 0)\r
450 // PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
451 }\r
452\r
453 if (PicoPad[0] & 1) pico_pen_y--;\r
454 if (PicoPad[0] & 2) pico_pen_y++;\r
455 if (PicoPad[0] & 4) pico_pen_x--;\r
456 if (PicoPad[0] & 8) pico_pen_x++;\r
457 PicoPad[0] &= ~0x0f; // release UDLR\r
458\r
459 lim_x = (Pico.video.reg[12]&1) ? 319 : 255;\r
460 if (pico_pen_y < 8) pico_pen_y = 8;\r
461 if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y;\r
462 if (pico_pen_x < 0) pico_pen_x = 0;\r
463 if (pico_pen_x > lim_x-PICO_PEN_ADJUST_X) pico_pen_x = lim_x-PICO_PEN_ADJUST_X;\r
464\r
465 PicoPicohw.pen_pos[0] = pico_pen_x;\r
466 if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;\r
467 PicoPicohw.pen_pos[0] += 0x3c;\r
468 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
469}\r
470\r
471void plat_update_volume(int has_changed, int is_up)\r
472{\r
473 static int prev_frame = 0, wait_frames = 0;\r
474 int vol = currentConfig.volume;\r
475 int need_low_volume = 0;\r
476 gp2x_soc_t soc;\r
477\r
478 soc = soc_detect();\r
479 if ((PicoOpt & POPT_EN_STEREO) && soc == SOCID_MMSP2)\r
480 need_low_volume = 1;\r
481\r
482 if (has_changed)\r
483 {\r
484 if (need_low_volume && vol < 5 && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
485 wait_frames++;\r
486 else {\r
487 if (is_up) {\r
488 if (vol < 99) vol++;\r
489 } else {\r
490 if (vol > 0) vol--;\r
491 }\r
492 wait_frames = 0;\r
493 sndout_oss_setvol(vol, vol);\r
494 currentConfig.volume = vol;\r
495 }\r
496 plat_status_msg("VOL: %02i", vol);\r
497 prev_frame = Pico.m.frame_count;\r
498 }\r
499\r
500 if (need_low_volume)\r
501 return;\r
502\r
503 /* set the right mixer func */\r
504 if (vol >= 5)\r
505 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
506 else {\r
507 mix_32_to_16l_level = 5 - vol;\r
508 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
509 }\r
510}\r
511\r
512\r
513static void updateSound(int len)\r
514{\r
515 if (PicoOpt&8) len<<=1;\r
516\r
517 /* avoid writing audio when lagging behind to prevent audio lag */\r
518 if (PicoSkipFrame != 2)\r
519 sndout_oss_write(PsndOut, len<<1);\r
520}\r
521\r
522void emu_startSound(void)\r
523{\r
524 static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;\r
525 int target_fps = Pico.m.pal ? 50 : 60;\r
526\r
527 PsndOut = NULL;\r
528\r
529 // prepare sound stuff\r
530 if (currentConfig.EmuOpt & 4)\r
531 {\r
532 int snd_excess_add;\r
533 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old ||\r
534 ((PicoOpt&0x200) && crashed_940)) {\r
535 PsndRerate(Pico.m.frame_count ? 1 : 0);\r
536 }\r
537 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
538 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
539 PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
540 sndout_oss_start(PsndRate, 16, (PicoOpt&8)>>3);\r
541 sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r
542 PicoWriteSound = updateSound;\r
543 plat_update_volume(0, 0);\r
544 memset(sndBuffer, 0, sizeof(sndBuffer));\r
545 PsndOut = sndBuffer;\r
546 PsndRate_old = PsndRate;\r
547 PicoOpt_old = PicoOpt;\r
548 pal_old = Pico.m.pal;\r
549 }\r
550}\r
551\r
552void emu_endSound(void)\r
553{\r
554}\r
555\r
556/* wait until we can write more sound */\r
557void emu_waitSound(void)\r
558{\r
559 // don't need to do anything, writes will block by themselves\r
560}\r
561\r
562\r
563static void SkipFrame(int do_audio)\r
564{\r
565 PicoSkipFrame=do_audio ? 1 : 2;\r
566 PicoFrame();\r
567 PicoSkipFrame=0;\r
568}\r
569\r
570\r
571void emu_forcedFrame(int opts)\r
572{\r
573 int po_old = PicoOpt;\r
574 int eo_old = currentConfig.EmuOpt;\r
575\r
576 PicoOpt &= ~0x10;\r
577 PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
578 currentConfig.EmuOpt |= 0x80;\r
579\r
580 //vidResetMode();\r
581 PicoDrawSetColorFormat(1);\r
582 PicoScanBegin = EmuScanBegin16;\r
583 Pico.m.dirtyPal = 1;\r
584 PicoFrameDrawOnly();\r
585\r
586/*\r
587 if (!(Pico.video.reg[12]&1)) {\r
588 vidCpyM2 = vidCpyM2_32col;\r
589 clearArea(1);\r
590 } else vidCpyM2 = vidCpyM2_40col;\r
591\r
592 vidCpyM2((unsigned char *)g_screen_ptr+320*8, PicoDraw2FB+328*8);\r
593 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
594 gp2x_video_setpalette(localPal, 0x40);\r
595*/\r
596 PicoOpt = po_old;\r
597 currentConfig.EmuOpt = eo_old;\r
598}\r
599\r
600void emu_platformDebugCat(char *str)\r
601{\r
602 // nothing\r
603}\r
604\r
605static void simpleWait(int thissec, int lim_time)\r
606{\r
607 struct timeval tval;\r
608\r
609 spend_cycles(1024);\r
610 gettimeofday(&tval, 0);\r
611 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
612\r
613 while (tval.tv_usec < lim_time)\r
614 {\r
615 spend_cycles(1024);\r
616 gettimeofday(&tval, 0);\r
617 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
618 }\r
619}\r
620\r
621\r
622#if 0\r
623static void tga_dump(void)\r
624{\r
625#define BYTE unsigned char\r
626#define WORD unsigned short\r
627 struct\r
628 {\r
629 BYTE IDLength; /* 00h Size of Image ID field */\r
630 BYTE ColorMapType; /* 01h Color map type */\r
631 BYTE ImageType; /* 02h Image type code */\r
632 WORD CMapStart; /* 03h Color map origin */\r
633 WORD CMapLength; /* 05h Color map length */\r
634 BYTE CMapDepth; /* 07h Depth of color map entries */\r
635 WORD XOffset; /* 08h X origin of image */\r
636 WORD YOffset; /* 0Ah Y origin of image */\r
637 WORD Width; /* 0Ch Width of image */\r
638 WORD Height; /* 0Eh Height of image */\r
639 BYTE PixelDepth; /* 10h Image pixel size */\r
640 BYTE ImageDescriptor; /* 11h Image descriptor byte */\r
641 } __attribute__((packed)) TGAHEAD;\r
642 static unsigned short oldscr[320*240];\r
643 FILE *f; char name[128]; int i;\r
644\r
645 memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
646 TGAHEAD.ImageType = 2;\r
647 TGAHEAD.Width = 320;\r
648 TGAHEAD.Height = 240;\r
649 TGAHEAD.PixelDepth = 16;\r
650 TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
651\r
652#define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
653\r
654 for (i = 0; i < 320*240; i++)\r
655 if(oldscr[i] != CONV(((unsigned short *)g_screen_ptr)[i])) break;\r
656 if (i < 320*240)\r
657 {\r
658 for (i = 0; i < 320*240; i++)\r
659 oldscr[i] = CONV(((unsigned short *)g_screen_ptr)[i]);\r
660 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
661 f = fopen(name, "wb");\r
662 if (!f) { printf("!f\n"); exit(1); }\r
663 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
664 fwrite(oldscr, 1, 320*240*2, f);\r
665 fclose(f);\r
666 }\r
667}\r
668#endif\r
669\r
670\r
671void emu_Loop(void)\r
672{\r
673 static int gp2x_old_clock = -1, EmuOpt_old = 0;\r
674 char fpsbuff[24]; // fps count c string\r
675 struct timeval tval; // timing\r
676 int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
677 int frames_done, frames_shown, thissec; // actual frames\r
678 int oldmodes = 0, target_fps, target_frametime, lim_time, vsync_offset, i;\r
679 char *notice = 0;\r
680\r
681 printf("entered emu_Loop()\n");\r
682\r
683 if ((EmuOpt_old ^ currentConfig.EmuOpt) & EOPT_RAM_TIMINGS) {\r
684 if (currentConfig.EmuOpt & EOPT_RAM_TIMINGS)\r
685 set_ram_timings();\r
686 else\r
687 unset_ram_timings();\r
688 }\r
689\r
690 if (gp2x_old_clock < 0)\r
691 gp2x_old_clock = default_cpu_clock;\r
692 if (gp2x_old_clock != currentConfig.CPUclock) {\r
693 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
694 gp2x_set_cpuclk(currentConfig.CPUclock);\r
695 gp2x_old_clock = currentConfig.CPUclock;\r
696 printf(" done\n");\r
697 }\r
698\r
699 if (gp2x_old_gamma != currentConfig.gamma || (EmuOpt_old&0x1000) != (currentConfig.EmuOpt&0x1000)) {\r
700 set_lcd_gamma(currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
701 gp2x_old_gamma = currentConfig.gamma;\r
702 printf("updated gamma to %i, A_SN's curve: %i\n", currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
703 }\r
704\r
705 if ((EmuOpt_old ^ currentConfig.EmuOpt) & EOPT_PSYNC) {\r
706 if (currentConfig.EmuOpt & EOPT_PSYNC)\r
707 set_lcd_custom_rate(Pico.m.pal);\r
708 else\r
709 unset_lcd_custom_rate();\r
710 }\r
711\r
712 if ((EmuOpt_old ^ currentConfig.EmuOpt) & EOPT_MMUHACK)\r
713 gp2x_make_fb_bufferable(currentConfig.EmuOpt & EOPT_MMUHACK);\r
714\r
715 EmuOpt_old = currentConfig.EmuOpt;\r
716 fpsbuff[0] = 0;\r
717\r
718 // make sure we are in correct mode\r
719 vidResetMode();\r
720 scaling_update();\r
721 Pico.m.dirtyPal = 1;\r
722 oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
723\r
724 // pal/ntsc might have changed, reset related stuff\r
725 target_fps = Pico.m.pal ? 50 : 60;\r
726 target_frametime = 1000000/target_fps;\r
727 reset_timing = 1;\r
728\r
729 emu_startSound();\r
730\r
731 // prepare CD buffer\r
732 if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r
733\r
734 // calc vsync offset to sync timing code with vsync\r
735 if (currentConfig.EmuOpt&0x2000) {\r
736 gettimeofday(&tval, 0);\r
737 gp2x_video_wait_vsync();\r
738 gettimeofday(&tval, 0);\r
739 vsync_offset = tval.tv_usec;\r
740 while (vsync_offset >= target_frametime)\r
741 vsync_offset -= target_frametime;\r
742 if (!vsync_offset) vsync_offset++;\r
743 printf("vsync_offset: %i\n", vsync_offset);\r
744 } else\r
745 vsync_offset = 0;\r
746\r
747 frames_done = frames_shown = thissec =\r
748 pframes_done = pframes_shown = pthissec = 0;\r
749\r
750 // loop\r
751 while (engineState == PGS_Running)\r
752 {\r
753 int modes;\r
754\r
755 gettimeofday(&tval, 0);\r
756 if (reset_timing) {\r
757 reset_timing = 0;\r
758 pthissec = tval.tv_sec;\r
759 pframes_shown = pframes_done = tval.tv_usec/target_frametime;\r
760 }\r
761\r
762 // show notice message?\r
763 if (noticeMsgTime.tv_sec)\r
764 {\r
765 static int noticeMsgSum;\r
766 if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
767 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
768 clearArea(0);\r
769 notice = 0;\r
770 } else {\r
771 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
772 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
773 notice = noticeMsg;\r
774 }\r
775 }\r
776\r
777 // check for mode changes\r
778 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
779 if (modes != oldmodes)\r
780 {\r
781 int scalex = 320;\r
782 osd_fps_x = OSD_FPS_X;\r
783 if (modes & 4) {\r
784 vidCpyM2 = vidCpyM2_40col;\r
785 } else {\r
786 if (PicoOpt & 0x100) {\r
787 vidCpyM2 = vidCpyM2_32col_nobord;\r
788 scalex = 256;\r
789 osd_fps_x = OSD_FPS_X - 64;\r
790 } else {\r
791 vidCpyM2 = vidCpyM2_32col;\r
792 }\r
793 }\r
794 /* want vertical scaling and game is not in 240 line mode */\r
795 if (currentConfig.scaling == EOPT_SCALE_HW_HV && !(modes&8))\r
796 gp2x_video_RGB_setscaling(8, scalex, 224);\r
797 else gp2x_video_RGB_setscaling(0, scalex, 240);\r
798 oldmodes = modes;\r
799 clearArea(1);\r
800 }\r
801\r
802 // second changed?\r
803 if (thissec != tval.tv_sec)\r
804 {\r
805#ifdef BENCHMARK\r
806 static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
807 if (++bench == 10) {\r
808 bench = 0;\r
809 bench_fps_s = bench_fps;\r
810 bf[bfp++ & 3] = bench_fps;\r
811 bench_fps = 0;\r
812 }\r
813 bench_fps += frames_shown;\r
814 sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
815#else\r
816 if (currentConfig.EmuOpt & 2) {\r
817 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
818 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
819 }\r
820#endif\r
821 frames_shown = frames_done = 0;\r
822 thissec = tval.tv_sec;\r
823 }\r
824#ifdef PFRAMES\r
825 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
826#endif\r
827\r
828 if (pthissec != tval.tv_sec)\r
829 {\r
830 if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
831 pframes_done = pframes_shown = 0;\r
832 } else {\r
833 // it is quite common for this implementation to leave 1 fame unfinished\r
834 // when second changes, but we don't want buffer to starve.\r
835 if (PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {\r
836 emu_update_input();\r
837 SkipFrame(1); pframes_done++;\r
838 }\r
839\r
840 pframes_done -= target_fps; if (pframes_done < 0) pframes_done = 0;\r
841 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;\r
842 if (pframes_shown > pframes_done) pframes_shown = pframes_done;\r
843 }\r
844 pthissec = tval.tv_sec;\r
845 }\r
846\r
847 lim_time = (pframes_done+1) * target_frametime + vsync_offset;\r
848 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
849 {\r
850 for(i = 0; i < currentConfig.Frameskip; i++) {\r
851 emu_update_input();\r
852 SkipFrame(1); pframes_done++; frames_done++;\r
853 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
854 gettimeofday(&tval, 0);\r
855 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
856 if (tval.tv_usec < lim_time) { // we are too fast\r
857 simpleWait(pthissec, lim_time);\r
858 }\r
859 }\r
860 lim_time += target_frametime;\r
861 }\r
862 }\r
863 else if (tval.tv_usec > lim_time) // auto frameskip\r
864 {\r
865 // no time left for this frame - skip\r
866 if (tval.tv_usec - lim_time >= 300000) {\r
867 /* something caused a slowdown for us (disk access? cache flush?)\r
868 * try to recover by resetting timing... */\r
869 reset_timing = 1;\r
870 continue;\r
871 }\r
872 emu_update_input();\r
873 SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;\r
874 continue;\r
875 }\r
876\r
877 emu_update_input();\r
878 PicoFrame();\r
879\r
880 // check time\r
881 gettimeofday(&tval, 0);\r
882 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
883\r
884 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
885 reset_timing = 1;\r
886 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
887 {\r
888 // sleep or vsync if we are still too fast\r
889 // usleep sleeps for ~20ms minimum, so it is not a solution here\r
890 if (!reset_timing && tval.tv_usec < lim_time)\r
891 {\r
892 // we are too fast\r
893 if (vsync_offset) {\r
894 if (lim_time - tval.tv_usec > target_frametime/2)\r
895 simpleWait(pthissec, lim_time - target_frametime/4);\r
896 gp2x_video_wait_vsync();\r
897 } else {\r
898 simpleWait(pthissec, lim_time);\r
899 }\r
900 }\r
901 }\r
902\r
903 blit(fpsbuff, notice);\r
904\r
905 pframes_done++; pframes_shown++;\r
906 frames_done++; frames_shown++;\r
907 }\r
908\r
909 emu_changeFastForward(0);\r
910\r
911 if (PicoAHW & PAHW_MCD)\r
912 PicoCDBufferFree();\r
913\r
914 // save SRAM\r
915 if ((currentConfig.EmuOpt & EOPT_USE_SRAM) && SRam.changed) {\r
916 plat_status_msg_busy_first("Writing SRAM/BRAM...");\r
917 emu_SaveLoadGame(0, 1);\r
918 SRam.changed = 0;\r
919 }\r
920\r
921 // if in 8bit mode, generate 16bit image for menu background\r
922 if ((PicoOpt & POPT_ALT_RENDERER) || !(currentConfig.EmuOpt & EOPT_16BPP))\r
923 emu_forcedFrame(POPT_EN_SOFTSCALE);\r
924}\r
925\r
926\r
927void emu_ResetGame(void)\r
928{\r
929 PicoReset();\r
930 reset_timing = 1;\r
931}\r
932\r
933const char *plat_get_credits(void)\r
934{\r
935 return "PicoDrive v" VERSION " (c) notaz, 2006-2009\n\n\n"\r
936 "Credits:\n"\r
937 "fDave: Cyclone 68000 core,\n"\r
938 " base code of PicoDrive\n"\r
939 "Reesy & FluBBa: DrZ80 core\n"\r
940 "MAME devs: YM2612 and SN76496 cores\n"\r
941 "rlyeh and others: minimal SDK\n"\r
942 "Squidge: mmuhack\n"\r
943 "Dzz: ARM940 sample\n"\r
944 "GnoStiC / Puck2099: USB joy code\n"\r
945 "craigix: GP2X hardware\n"\r
946 "ketchupgun: skin design\n"\r
947 "\n"\r
948 "special thanks (for docs, ideas):\n"\r
949 " Charles MacDonald, Haze,\n"\r
950 " Stephane Dallongeville,\n"\r
951 " Lordus, Exophase, Rokas,\n"\r
952 " Nemesis, Tasco Deluxe";\r
953}\r
PicoDrive's frontend in a lib