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further unification and refactoring
[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 <stdarg.h>\r
10\r
11#include "plat_gp2x.h"\r
12#include "soc.h"\r
13#include "../common/plat.h"\r
14#include "../common/menu.h"\r
15#include "../common/arm_utils.h"\r
16#include "../common/fonts.h"\r
17#include "../common/emu.h"\r
18#include "../common/config.h"\r
19#include "../linux/sndout_oss.h"\r
20#include "version.h"\r
21\r
22#include <pico/pico_int.h>\r
23#include <pico/patch.h>\r
24#include <pico/sound/mix.h>\r
25#include <zlib/zlib.h>\r
26\r
27//#define PFRAMES\r
28\r
29#ifdef BENCHMARK\r
30#define OSD_FPS_X 220\r
31#else\r
32#define OSD_FPS_X 260\r
33#endif\r
34\r
35\r
36extern int crashed_940;\r
37\r
38static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
39static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
40static int osd_fps_x;\r
41static int gp2x_old_gamma = 100;\r
42static char noticeMsg[40];\r
43static unsigned char PicoDraw2FB_[(8+320) * (8+240+8)];\r
44unsigned char *PicoDraw2FB = PicoDraw2FB_;\r
45\r
46\r
47void plat_status_msg(const char *format, ...)\r
48{\r
49 va_list vl;\r
50\r
51 va_start(vl, format);\r
52 vsnprintf(noticeMsg, sizeof(noticeMsg), format, vl);\r
53 va_end(vl);\r
54\r
55 gettimeofday(&noticeMsgTime, 0);\r
56}\r
57\r
58int plat_get_root_dir(char *dst, int len)\r
59{\r
60 extern char **g_argv;\r
61 int j;\r
62\r
63 strncpy(dst, g_argv[0], len);\r
64 len -= 32; // reserve\r
65 if (len < 0) len = 0;\r
66 dst[len] = 0;\r
67 for (j = strlen(dst); j > 0; j--)\r
68 if (dst[j] == '/') { dst[j+1] = 0; break; }\r
69\r
70 return j + 1;\r
71}\r
72\r
73\r
74static void scaling_update(void)\r
75{\r
76 PicoOpt &= ~(POPT_DIS_32C_BORDER|POPT_EN_SOFTSCALE);\r
77 switch (currentConfig.scaling) {\r
78 default:break;\r
79 case EOPT_SCALE_HW_H:\r
80 case EOPT_SCALE_HW_HV:\r
81 PicoOpt |= POPT_DIS_32C_BORDER;\r
82 break;\r
83 case EOPT_SCALE_SW_H:\r
84 PicoOpt |= POPT_EN_SOFTSCALE;\r
85 break;\r
86 }\r
87}\r
88\r
89\r
90void pemu_prep_defconfig(void)\r
91{\r
92 gp2x_soc_t soc;\r
93\r
94 memset(&defaultConfig, 0, sizeof(defaultConfig));\r
95 defaultConfig.EmuOpt = 0x9d | EOPT_RAM_TIMINGS | 0x600; // | <- confirm_save, cd_leds\r
96 defaultConfig.s_PicoOpt = 0x0f | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC|POPT_ACC_SPRITES;\r
97 defaultConfig.s_PsndRate = 44100;\r
98 defaultConfig.s_PicoRegion = 0; // auto\r
99 defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
100 defaultConfig.s_PicoCDBuffers = 0;\r
101 defaultConfig.Frameskip = -1; // auto\r
102 defaultConfig.CPUclock = default_cpu_clock;\r
103 defaultConfig.volume = 50;\r
104 defaultConfig.gamma = 100;\r
105 defaultConfig.scaling = 0;\r
106 defaultConfig.turbo_rate = 15;\r
107\r
108 soc = soc_detect();\r
109 if (soc == SOCID_MMSP2)\r
110 defaultConfig.s_PicoOpt |= POPT_EXT_FM;\r
111}\r
112\r
113static void osd_text(int x, int y, const char *text)\r
114{\r
115 int len = strlen(text)*8;\r
116 int *p, i, h, offs;\r
117\r
118 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
119 len = (len+3) >> 2;\r
120 for (h = 0; h < 8; h++) {\r
121 offs = (x + g_screen_width * (y+h)) & ~3;\r
122 p = (int *) ((char *)g_screen_ptr + offs);\r
123 for (i = len; i; i--, p++)\r
124 *p = 0xe0e0e0e0;\r
125 }\r
126 emu_textOut8(x, y, text);\r
127 } else {\r
128 len = (len+1) >> 1;\r
129 for (h = 0; h < 8; h++) {\r
130 offs = (x + g_screen_width * (y+h)) & ~1;\r
131 p = (int *) ((short *)g_screen_ptr + offs);\r
132 for (i = len; i; i--, p++)\r
133 *p = (*p >> 2) & 0x39e7;\r
134 }\r
135 emu_textOut16(x, y, text);\r
136 }\r
137}\r
138\r
139static void draw_cd_leds(void)\r
140{\r
141 int old_reg;\r
142 old_reg = Pico_mcd->s68k_regs[0];\r
143\r
144 if ((PicoOpt & POPT_ALT_RENDERER) || !(currentConfig.EmuOpt & EOPT_16BPP)) {\r
145 // 8-bit modes\r
146 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
147 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
148 *(unsigned int *)((char *)g_screen_ptr + 320*2+ 4) =\r
149 *(unsigned int *)((char *)g_screen_ptr + 320*3+ 4) =\r
150 *(unsigned int *)((char *)g_screen_ptr + 320*4+ 4) = col_g;\r
151 *(unsigned int *)((char *)g_screen_ptr + 320*2+12) =\r
152 *(unsigned int *)((char *)g_screen_ptr + 320*3+12) =\r
153 *(unsigned int *)((char *)g_screen_ptr + 320*4+12) = col_r;\r
154 } else {\r
155 // 16-bit modes\r
156 unsigned int *p = (unsigned int *)((short *)g_screen_ptr + 320*2+4);\r
157 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
158 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
159 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
160 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
161 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
162 }\r
163}\r
164\r
165static void draw_pico_ptr(void)\r
166{\r
167 unsigned short *p = (unsigned short *)g_screen_ptr;\r
168\r
169 // only if pen enabled and for 16bit modes\r
170 if (pico_inp_mode == 0 || (PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) return;\r
171\r
172 if (!(Pico.video.reg[12]&1) && !(PicoOpt&POPT_DIS_32C_BORDER))\r
173 p += 32;\r
174\r
175 p += 320 * (pico_pen_y + PICO_PEN_ADJUST_Y);\r
176 p += pico_pen_x + PICO_PEN_ADJUST_X;\r
177 p[0] ^= 0xffff;\r
178 p[319] ^= 0xffff;\r
179 p[320] ^= 0xffff;\r
180 p[321] ^= 0xffff;\r
181 p[640] ^= 0xffff;\r
182}\r
183\r
184static int EmuScanBegin16(unsigned int num)\r
185{\r
186 if (!(Pico.video.reg[1]&8)) num += 8;\r
187 DrawLineDest = (unsigned short *) g_screen_ptr + g_screen_width * num;\r
188\r
189 return 0;\r
190}\r
191\r
192static int EmuScanBegin8(unsigned int num)\r
193{\r
194 if (!(Pico.video.reg[1]&8)) num += 8;\r
195 DrawLineDest = (unsigned char *) g_screen_ptr + g_screen_width * num;\r
196\r
197 return 0;\r
198}\r
199\r
200int localPal[0x100];\r
201static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
202\r
203static void blit(const char *fps, const char *notice)\r
204{\r
205 int emu_opt = currentConfig.EmuOpt;\r
206\r
207 if (PicoOpt & POPT_ALT_RENDERER)\r
208 {\r
209 // 8bit fast renderer\r
210 if (Pico.m.dirtyPal) {\r
211 Pico.m.dirtyPal = 0;\r
212 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
213 // feed new palette to our device\r
214 gp2x_video_setpalette(localPal, 0x40);\r
215 }\r
216 // a hack for VR\r
217 if (PicoRead16Hook == PicoSVPRead16)\r
218 memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);\r
219 // do actual copy\r
220 vidCpyM2((unsigned char *)g_screen_ptr+320*8, PicoDraw2FB+328*8);\r
221 }\r
222 else if (!(emu_opt & EOPT_16BPP))\r
223 {\r
224 // 8bit accurate renderer\r
225 if (Pico.m.dirtyPal)\r
226 {\r
227 int pallen = 0xc0;\r
228 Pico.m.dirtyPal = 0;\r
229 if (Pico.video.reg[0xC]&8) // shadow/hilight mode\r
230 {\r
231 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
232 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
233 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
234 memcpy32(localPal+0xc0, localPal+0x40, 0x40);\r
235 pallen = 0x100;\r
236 }\r
237 else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes\r
238 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
239 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
240 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
241 }\r
242 else {\r
243 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
244 memcpy32(localPal+0x80, localPal, 0x40); // for spr prio mess\r
245 }\r
246 if (pallen > 0xc0) {\r
247 localPal[0xc0] = 0x0000c000;\r
248 localPal[0xd0] = 0x00c00000;\r
249 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
250 localPal[0xf0] = 0x00ffffff;\r
251 }\r
252 gp2x_video_setpalette(localPal, pallen);\r
253 }\r
254 }\r
255\r
256 if (notice || (emu_opt & 2)) {\r
257 int h = 232;\r
258 if (currentConfig.scaling == EOPT_SCALE_HW_HV && !(Pico.video.reg[1]&8))\r
259 h -= 8;\r
260 if (notice)\r
261 osd_text(4, h, notice);\r
262 if (emu_opt & 2)\r
263 osd_text(osd_fps_x, h, fps);\r
264 }\r
265 if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))\r
266 draw_cd_leds();\r
267 if (PicoAHW & PAHW_PICO)\r
268 draw_pico_ptr();\r
269\r
270 gp2x_video_flip();\r
271\r
272 if (!(PicoOpt & POPT_ALT_RENDERER)) {\r
273 if (!(Pico.video.reg[1]&8)) {\r
274 if (currentConfig.EmuOpt & EOPT_16BPP)\r
275 DrawLineDest = (unsigned short *) g_screen_ptr + 320*8;\r
276 else\r
277 DrawLineDest = (unsigned char *) g_screen_ptr + 320*8;\r
278 } else {\r
279 DrawLineDest = g_screen_ptr;\r
280 }\r
281 }\r
282}\r
283\r
284// clears whole screen or just the notice area (in all buffers)\r
285static void clearArea(int full)\r
286{\r
287 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
288 // 8-bit renderers\r
289 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
290 else gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
291 } else {\r
292 // 16bit accurate renderer\r
293 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
294 else gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
295 }\r
296}\r
297\r
298void plat_status_msg_busy_next(const char *msg)\r
299{\r
300 clearArea(0);\r
301 blit("", msg);\r
302\r
303 /* assumption: msg_busy_next gets called only when\r
304 * something slow is about to happen */\r
305 reset_timing = 1;\r
306}\r
307\r
308void plat_status_msg_busy_first(const char *msg)\r
309{\r
310 gp2x_memcpy_all_buffers(g_screen_ptr, 0, 320*240*2);\r
311 plat_status_msg_busy_next(msg);\r
312}\r
313\r
314static void vidResetMode(void)\r
315{\r
316 if (PicoOpt & POPT_ALT_RENDERER) {\r
317 gp2x_video_changemode(8);\r
318 } else if (currentConfig.EmuOpt & EOPT_16BPP) {\r
319 gp2x_video_changemode(16);\r
320 PicoDrawSetColorFormat(1);\r
321 PicoScanBegin = EmuScanBegin16;\r
322 } else {\r
323 gp2x_video_changemode(8);\r
324 PicoDrawSetColorFormat(2);\r
325 PicoScanBegin = EmuScanBegin8;\r
326 }\r
327 if ((PicoOpt & POPT_ALT_RENDERER) || !(currentConfig.EmuOpt & EOPT_16BPP)) {\r
328 // setup pal for 8-bit modes\r
329 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
330 localPal[0xd0] = 0x00c00000;\r
331 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
332 localPal[0xf0] = 0x00ffffff;\r
333 gp2x_video_setpalette(localPal, 0x100);\r
334 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
335 gp2x_video_flip();\r
336 }\r
337 Pico.m.dirtyPal = 1;\r
338 // reset scaling\r
339 if (currentConfig.scaling == EOPT_SCALE_HW_HV && !(Pico.video.reg[1]&8))\r
340 gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
341 else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
342}\r
343\r
344void plat_video_toggle_renderer(void)\r
345{\r
346 if (PicoOpt & POPT_ALT_RENDERER) {\r
347 PicoOpt &= ~POPT_ALT_RENDERER;\r
348 currentConfig.EmuOpt |= EOPT_16BPP;\r
349 } else if (!(currentConfig.EmuOpt & EOPT_16BPP))\r
350 PicoOpt |= POPT_ALT_RENDERER;\r
351 else\r
352 currentConfig.EmuOpt &= ~EOPT_16BPP;\r
353\r
354 vidResetMode();\r
355\r
356 if (PicoOpt & POPT_ALT_RENDERER) {\r
357 plat_status_msg(" 8bit fast renderer");\r
358 } else if (currentConfig.EmuOpt & EOPT_16BPP) {\r
359 plat_status_msg("16bit accurate renderer");\r
360 } else {\r
361 plat_status_msg(" 8bit accurate renderer");\r
362 }\r
363}\r
364\r
365#if 0 // TODO\r
366static void RunEventsPico(unsigned int events)\r
367{\r
368 int ret, px, py, lim_x;\r
369 static int pdown_frames = 0;\r
370\r
371 // for F200\r
372 ret = gp2x_touchpad_read(&px, &py);\r
373 if (ret >= 0)\r
374 {\r
375 if (ret > 35000)\r
376 {\r
377 if (pdown_frames++ > 5)\r
378 PicoPad[0] |= 0x20;\r
379\r
380 pico_pen_x = px;\r
381 pico_pen_y = py;\r
382 if (!(Pico.video.reg[12]&1)) {\r
383 pico_pen_x -= 32;\r
384 if (pico_pen_x < 0) pico_pen_x = 0;\r
385 if (pico_pen_x > 248) pico_pen_x = 248;\r
386 }\r
387 if (pico_pen_y > 224) pico_pen_y = 224;\r
388 }\r
389 else\r
390 pdown_frames = 0;\r
391\r
392 //if (ret == 0)\r
393 // PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
394 }\r
395}\r
396#endif\r
397\r
398void plat_update_volume(int has_changed, int is_up)\r
399{\r
400 static int prev_frame = 0, wait_frames = 0;\r
401 int vol = currentConfig.volume;\r
402 int need_low_volume = 0;\r
403 gp2x_soc_t soc;\r
404\r
405 soc = soc_detect();\r
406 if ((PicoOpt & POPT_EN_STEREO) && soc == SOCID_MMSP2)\r
407 need_low_volume = 1;\r
408\r
409 if (has_changed)\r
410 {\r
411 if (need_low_volume && vol < 5 && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
412 wait_frames++;\r
413 else {\r
414 if (is_up) {\r
415 if (vol < 99) vol++;\r
416 } else {\r
417 if (vol > 0) vol--;\r
418 }\r
419 wait_frames = 0;\r
420 sndout_oss_setvol(vol, vol);\r
421 currentConfig.volume = vol;\r
422 }\r
423 plat_status_msg("VOL: %02i", vol);\r
424 prev_frame = Pico.m.frame_count;\r
425 }\r
426\r
427 if (need_low_volume)\r
428 return;\r
429\r
430 /* set the right mixer func */\r
431 if (vol >= 5)\r
432 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
433 else {\r
434 mix_32_to_16l_level = 5 - vol;\r
435 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
436 }\r
437}\r
438\r
439\r
440static void updateSound(int len)\r
441{\r
442 if (PicoOpt&8) len<<=1;\r
443\r
444 /* avoid writing audio when lagging behind to prevent audio lag */\r
445 if (PicoSkipFrame != 2)\r
446 sndout_oss_write(PsndOut, len<<1);\r
447}\r
448\r
449void pemu_sound_start(void)\r
450{\r
451 static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;\r
452 int target_fps = Pico.m.pal ? 50 : 60;\r
453\r
454 PsndOut = NULL;\r
455\r
456 // prepare sound stuff\r
457 if (currentConfig.EmuOpt & 4)\r
458 {\r
459 int snd_excess_add;\r
460 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old ||\r
461 ((PicoOpt&0x200) && crashed_940)) {\r
462 PsndRerate(Pico.m.frame_count ? 1 : 0);\r
463 }\r
464 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
465 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
466 PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
467 sndout_oss_start(PsndRate, 16, (PicoOpt&8)>>3);\r
468 sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r
469 PicoWriteSound = updateSound;\r
470 plat_update_volume(0, 0);\r
471 memset(sndBuffer, 0, sizeof(sndBuffer));\r
472 PsndOut = sndBuffer;\r
473 PsndRate_old = PsndRate;\r
474 PicoOpt_old = PicoOpt;\r
475 pal_old = Pico.m.pal;\r
476 }\r
477}\r
478\r
479void pemu_sound_stop(void)\r
480{\r
481}\r
482\r
483void pemu_sound_wait(void)\r
484{\r
485 // don't need to do anything, writes will block by themselves\r
486}\r
487\r
488\r
489static void SkipFrame(int do_audio)\r
490{\r
491 PicoSkipFrame=do_audio ? 1 : 2;\r
492 PicoFrame();\r
493 PicoSkipFrame=0;\r
494}\r
495\r
496\r
497void pemu_forced_frame(int opts)\r
498{\r
499 int po_old = PicoOpt;\r
500 int eo_old = currentConfig.EmuOpt;\r
501\r
502 PicoOpt &= ~POPT_ALT_RENDERER;\r
503 PicoOpt |= opts|POPT_ACC_SPRITES;\r
504 currentConfig.EmuOpt |= EOPT_16BPP;\r
505\r
506 PicoDrawSetColorFormat(1);\r
507 PicoScanBegin = EmuScanBegin16;\r
508 Pico.m.dirtyPal = 1;\r
509 PicoFrameDrawOnly();\r
510\r
511/*\r
512 if (!(Pico.video.reg[12]&1)) {\r
513 vidCpyM2 = vidCpyM2_32col;\r
514 clearArea(1);\r
515 } else vidCpyM2 = vidCpyM2_40col;\r
516\r
517 vidCpyM2((unsigned char *)g_screen_ptr+320*8, PicoDraw2FB+328*8);\r
518 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
519 gp2x_video_setpalette(localPal, 0x40);\r
520*/\r
521 PicoOpt = po_old;\r
522 currentConfig.EmuOpt = eo_old;\r
523}\r
524\r
525void plat_debug_cat(char *str)\r
526{\r
527}\r
528\r
529static void simpleWait(int thissec, int lim_time)\r
530{\r
531 struct timeval tval;\r
532\r
533 spend_cycles(1024);\r
534 gettimeofday(&tval, 0);\r
535 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
536\r
537 while (tval.tv_usec < lim_time)\r
538 {\r
539 spend_cycles(1024);\r
540 gettimeofday(&tval, 0);\r
541 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
542 }\r
543}\r
544\r
545\r
546#if 0\r
547static void tga_dump(void)\r
548{\r
549#define BYTE unsigned char\r
550#define WORD unsigned short\r
551 struct\r
552 {\r
553 BYTE IDLength; /* 00h Size of Image ID field */\r
554 BYTE ColorMapType; /* 01h Color map type */\r
555 BYTE ImageType; /* 02h Image type code */\r
556 WORD CMapStart; /* 03h Color map origin */\r
557 WORD CMapLength; /* 05h Color map length */\r
558 BYTE CMapDepth; /* 07h Depth of color map entries */\r
559 WORD XOffset; /* 08h X origin of image */\r
560 WORD YOffset; /* 0Ah Y origin of image */\r
561 WORD Width; /* 0Ch Width of image */\r
562 WORD Height; /* 0Eh Height of image */\r
563 BYTE PixelDepth; /* 10h Image pixel size */\r
564 BYTE ImageDescriptor; /* 11h Image descriptor byte */\r
565 } __attribute__((packed)) TGAHEAD;\r
566 static unsigned short oldscr[320*240];\r
567 FILE *f; char name[128]; int i;\r
568\r
569 memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
570 TGAHEAD.ImageType = 2;\r
571 TGAHEAD.Width = 320;\r
572 TGAHEAD.Height = 240;\r
573 TGAHEAD.PixelDepth = 16;\r
574 TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
575\r
576#define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
577\r
578 for (i = 0; i < 320*240; i++)\r
579 if(oldscr[i] != CONV(((unsigned short *)g_screen_ptr)[i])) break;\r
580 if (i < 320*240)\r
581 {\r
582 for (i = 0; i < 320*240; i++)\r
583 oldscr[i] = CONV(((unsigned short *)g_screen_ptr)[i]);\r
584 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
585 f = fopen(name, "wb");\r
586 if (!f) { printf("!f\n"); exit(1); }\r
587 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
588 fwrite(oldscr, 1, 320*240*2, f);\r
589 fclose(f);\r
590 }\r
591}\r
592#endif\r
593\r
594\r
595void pemu_loop(void)\r
596{\r
597 static int gp2x_old_clock = -1, EmuOpt_old = 0;\r
598 char fpsbuff[24]; // fps count c string\r
599 struct timeval tval; // timing\r
600 int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
601 int frames_done, frames_shown, thissec; // actual frames\r
602 int oldmodes = 0, target_fps, target_frametime, lim_time, vsync_offset, i;\r
603 char *notice = 0;\r
604\r
605 printf("entered emu_Loop()\n");\r
606\r
607 if ((EmuOpt_old ^ currentConfig.EmuOpt) & EOPT_RAM_TIMINGS) {\r
608 if (currentConfig.EmuOpt & EOPT_RAM_TIMINGS)\r
609 set_ram_timings();\r
610 else\r
611 unset_ram_timings();\r
612 }\r
613\r
614 if (gp2x_old_clock < 0)\r
615 gp2x_old_clock = default_cpu_clock;\r
616 if (gp2x_old_clock != currentConfig.CPUclock) {\r
617 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
618 gp2x_set_cpuclk(currentConfig.CPUclock);\r
619 gp2x_old_clock = currentConfig.CPUclock;\r
620 printf(" done\n");\r
621 }\r
622\r
623 if (gp2x_old_gamma != currentConfig.gamma || (EmuOpt_old&0x1000) != (currentConfig.EmuOpt&0x1000)) {\r
624 set_lcd_gamma(currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
625 gp2x_old_gamma = currentConfig.gamma;\r
626 printf("updated gamma to %i, A_SN's curve: %i\n", currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
627 }\r
628\r
629 if ((EmuOpt_old ^ currentConfig.EmuOpt) & EOPT_PSYNC) {\r
630 if (currentConfig.EmuOpt & EOPT_PSYNC)\r
631 set_lcd_custom_rate(Pico.m.pal);\r
632 else\r
633 unset_lcd_custom_rate();\r
634 }\r
635\r
636 if ((EmuOpt_old ^ currentConfig.EmuOpt) & EOPT_MMUHACK)\r
637 gp2x_make_fb_bufferable(currentConfig.EmuOpt & EOPT_MMUHACK);\r
638\r
639 EmuOpt_old = currentConfig.EmuOpt;\r
640 fpsbuff[0] = 0;\r
641\r
642 // make sure we are in correct mode\r
643 vidResetMode();\r
644 scaling_update();\r
645 Pico.m.dirtyPal = 1;\r
646 oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
647\r
648 // pal/ntsc might have changed, reset related stuff\r
649 target_fps = Pico.m.pal ? 50 : 60;\r
650 target_frametime = 1000000/target_fps;\r
651 reset_timing = 1;\r
652\r
653 pemu_sound_start();\r
654\r
655 // prepare CD buffer\r
656 if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r
657\r
658 // calc vsync offset to sync timing code with vsync\r
659 if (currentConfig.EmuOpt&0x2000) {\r
660 gettimeofday(&tval, 0);\r
661 gp2x_video_wait_vsync();\r
662 gettimeofday(&tval, 0);\r
663 vsync_offset = tval.tv_usec;\r
664 while (vsync_offset >= target_frametime)\r
665 vsync_offset -= target_frametime;\r
666 if (!vsync_offset) vsync_offset++;\r
667 printf("vsync_offset: %i\n", vsync_offset);\r
668 } else\r
669 vsync_offset = 0;\r
670\r
671 frames_done = frames_shown = thissec =\r
672 pframes_done = pframes_shown = pthissec = 0;\r
673\r
674 // loop\r
675 while (engineState == PGS_Running)\r
676 {\r
677 int modes;\r
678\r
679 gettimeofday(&tval, 0);\r
680 if (reset_timing) {\r
681 reset_timing = 0;\r
682 pthissec = tval.tv_sec;\r
683 pframes_shown = pframes_done = tval.tv_usec/target_frametime;\r
684 }\r
685\r
686 // show notice message?\r
687 if (noticeMsgTime.tv_sec)\r
688 {\r
689 static int noticeMsgSum;\r
690 if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
691 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
692 clearArea(0);\r
693 notice = 0;\r
694 } else {\r
695 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
696 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
697 notice = noticeMsg;\r
698 }\r
699 }\r
700\r
701 // check for mode changes\r
702 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
703 if (modes != oldmodes)\r
704 {\r
705 int scalex = 320;\r
706 osd_fps_x = OSD_FPS_X;\r
707 if (modes & 4) {\r
708 vidCpyM2 = vidCpyM2_40col;\r
709 } else {\r
710 if (PicoOpt & 0x100) {\r
711 vidCpyM2 = vidCpyM2_32col_nobord;\r
712 scalex = 256;\r
713 osd_fps_x = OSD_FPS_X - 64;\r
714 } else {\r
715 vidCpyM2 = vidCpyM2_32col;\r
716 }\r
717 }\r
718 /* want vertical scaling and game is not in 240 line mode */\r
719 if (currentConfig.scaling == EOPT_SCALE_HW_HV && !(modes&8))\r
720 gp2x_video_RGB_setscaling(8, scalex, 224);\r
721 else gp2x_video_RGB_setscaling(0, scalex, 240);\r
722 oldmodes = modes;\r
723 clearArea(1);\r
724 }\r
725\r
726 // second changed?\r
727 if (thissec != tval.tv_sec)\r
728 {\r
729#ifdef BENCHMARK\r
730 static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
731 if (++bench == 10) {\r
732 bench = 0;\r
733 bench_fps_s = bench_fps;\r
734 bf[bfp++ & 3] = bench_fps;\r
735 bench_fps = 0;\r
736 }\r
737 bench_fps += frames_shown;\r
738 sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
739#else\r
740 if (currentConfig.EmuOpt & 2) {\r
741 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
742 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
743 }\r
744#endif\r
745 frames_shown = frames_done = 0;\r
746 thissec = tval.tv_sec;\r
747 }\r
748#ifdef PFRAMES\r
749 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
750#endif\r
751\r
752 if (pthissec != tval.tv_sec)\r
753 {\r
754 if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
755 pframes_done = pframes_shown = 0;\r
756 } else {\r
757 // it is quite common for this implementation to leave 1 fame unfinished\r
758 // when second changes, but we don't want buffer to starve.\r
759 if (PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {\r
760 emu_update_input();\r
761 SkipFrame(1); pframes_done++;\r
762 }\r
763\r
764 pframes_done -= target_fps; if (pframes_done < 0) pframes_done = 0;\r
765 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;\r
766 if (pframes_shown > pframes_done) pframes_shown = pframes_done;\r
767 }\r
768 pthissec = tval.tv_sec;\r
769 }\r
770\r
771 lim_time = (pframes_done+1) * target_frametime + vsync_offset;\r
772 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
773 {\r
774 for(i = 0; i < currentConfig.Frameskip; i++) {\r
775 emu_update_input();\r
776 SkipFrame(1); pframes_done++; frames_done++;\r
777 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
778 gettimeofday(&tval, 0);\r
779 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
780 if (tval.tv_usec < lim_time) { // we are too fast\r
781 simpleWait(pthissec, lim_time);\r
782 }\r
783 }\r
784 lim_time += target_frametime;\r
785 }\r
786 }\r
787 else if (tval.tv_usec > lim_time) // auto frameskip\r
788 {\r
789 // no time left for this frame - skip\r
790 if (tval.tv_usec - lim_time >= 300000) {\r
791 /* something caused a slowdown for us (disk access? cache flush?)\r
792 * try to recover by resetting timing... */\r
793 reset_timing = 1;\r
794 continue;\r
795 }\r
796 emu_update_input();\r
797 SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;\r
798 continue;\r
799 }\r
800\r
801 emu_update_input();\r
802 PicoFrame();\r
803\r
804 // check time\r
805 gettimeofday(&tval, 0);\r
806 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
807\r
808 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
809 reset_timing = 1;\r
810 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
811 {\r
812 // sleep or vsync if we are still too fast\r
813 // usleep sleeps for ~20ms minimum, so it is not a solution here\r
814 if (!reset_timing && tval.tv_usec < lim_time)\r
815 {\r
816 // we are too fast\r
817 if (vsync_offset) {\r
818 if (lim_time - tval.tv_usec > target_frametime/2)\r
819 simpleWait(pthissec, lim_time - target_frametime/4);\r
820 gp2x_video_wait_vsync();\r
821 } else {\r
822 simpleWait(pthissec, lim_time);\r
823 }\r
824 }\r
825 }\r
826\r
827 blit(fpsbuff, notice);\r
828\r
829 pframes_done++; pframes_shown++;\r
830 frames_done++; frames_shown++;\r
831 }\r
832\r
833 emu_changeFastForward(0);\r
834\r
835 if (PicoAHW & PAHW_MCD)\r
836 PicoCDBufferFree();\r
837\r
838 // save SRAM\r
839 if ((currentConfig.EmuOpt & EOPT_USE_SRAM) && SRam.changed) {\r
840 plat_status_msg_busy_first("Writing SRAM/BRAM...");\r
841 emu_SaveLoadGame(0, 1);\r
842 SRam.changed = 0;\r
843 }\r
844\r
845 // if in 8bit mode, generate 16bit image for menu background\r
846 if ((PicoOpt & POPT_ALT_RENDERER) || !(currentConfig.EmuOpt & EOPT_16BPP))\r
847 pemu_forced_frame(POPT_EN_SOFTSCALE);\r
848}\r
849\r
850const char *plat_get_credits(void)\r
851{\r
852 return "PicoDrive v" VERSION " (c) notaz, 2006-2009\n\n\n"\r
853 "Credits:\n"\r
854 "fDave: Cyclone 68000 core,\n"\r
855 " base code of PicoDrive\n"\r
856 "Reesy & FluBBa: DrZ80 core\n"\r
857 "MAME devs: YM2612 and SN76496 cores\n"\r
858 "rlyeh and others: minimal SDK\n"\r
859 "Squidge: mmuhack\n"\r
860 "Dzz: ARM940 sample\n"\r
861 "GnoStiC / Puck2099: USB joy code\n"\r
862 "craigix: GP2X hardware\n"\r
863 "ketchupgun: skin design\n"\r
864 "\n"\r
865 "special thanks (for docs, ideas):\n"\r
866 " Charles MacDonald, Haze,\n"\r
867 " Stephane Dallongeville,\n"\r
868 " Lordus, Exophase, Rokas,\n"\r
869 " Nemesis, Tasco Deluxe";\r
870}\r
PicoDrive's frontend in a lib