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[picodrive.git] / platform / pandora / emu.c
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3bb7bd19 1// (c) Copyright 2006-2008 notaz, All rights reserved.\r
e55f0cbb 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
e55f0cbb 18#include "../gp2x/menu.h"\r
b6820926 19#include "../gp2x/gp2x.h"\r
e55f0cbb 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
b6820926 25#include "../common/input.h"\r
e5ab6faf 26#include "../linux/sndout_oss.h"\r
3bb7bd19 27#include "asm_utils.h"\r
e55f0cbb 28\r
efcba75f 29#include <pico/pico_int.h>\r
30#include <pico/patch.h>\r
31#include <pico/sound/mix.h>\r
e55f0cbb 32#include <zlib/zlib.h>\r
33\r
34//#define PFRAMES\r
3bb7bd19 35#define BENCHMARK\r
36//#define USE_320_SCREEN 1\r
e55f0cbb 37\r
38#ifdef BENCHMARK\r
39#define OSD_FPS_X (800-200)\r
40#else\r
41#define OSD_FPS_X (800-120)\r
42#endif\r
43\r
44\r
45int engineState;\r
46int select_exits = 0;\r
47\r
48char romFileName[PATH_MAX];\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
e55f0cbb 53unsigned char *PicoDraw2FB = NULL; // temporary buffer for alt renderer\r
54int reset_timing = 0;\r
55\r
56#define PICO_PEN_ADJUST_X 4\r
57#define PICO_PEN_ADJUST_Y 2\r
58static int pico_pen_x = SCREEN_WIDTH/2, pico_pen_y = 240/2;\r
59\r
60static void emu_msg_cb(const char *msg);\r
61static void emu_msg_tray_open(void);\r
62\r
63\r
64void emu_noticeMsgUpdated(void)\r
65{\r
66 gettimeofday(&noticeMsgTime, 0);\r
67}\r
68\r
ca482e5d 69int emu_getMainDir(char *dst, int len)\r
e55f0cbb 70{\r
71 extern char **g_argv;\r
72 int j;\r
73\r
74 strncpy(dst, g_argv[0], len);\r
75 len -= 32; // reserve\r
76 if (len < 0) len = 0;\r
77 dst[len] = 0;\r
78 for (j = strlen(dst); j > 0; j--)\r
79 if (dst[j] == '/') { dst[j+1] = 0; break; }\r
ca482e5d 80\r
81 return j + 1;\r
e55f0cbb 82}\r
83\r
84void emu_Init(void)\r
85{\r
86 // make temp buffer for alt renderer\r
87 PicoDraw2FB = malloc((8+320)*(8+240+8));\r
88 if (!PicoDraw2FB)\r
89 {\r
90 printf("PicoDraw2FB == 0\n");\r
91 }\r
92\r
93 // make dirs for saves, cfgs, etc.\r
94 mkdir("mds", 0777);\r
95 mkdir("srm", 0777);\r
96 mkdir("brm", 0777);\r
97 mkdir("cfg", 0777);\r
98\r
99 PicoInit();\r
100 PicoMessage = emu_msg_cb;\r
101 PicoMCDopenTray = emu_msg_tray_open;\r
102 PicoMCDcloseTray = menu_loop_tray;\r
103}\r
104\r
105\r
e55f0cbb 106void emu_Deinit(void)\r
107{\r
108 // save SRAM\r
109 if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
110 emu_SaveLoadGame(0, 1);\r
111 SRam.changed = 0;\r
112 }\r
113\r
114 if (!(currentConfig.EmuOpt & 0x20)) {\r
115 config_writelrom(PicoConfigFile);\r
116#ifndef NO_SYNC\r
117 sync();\r
118#endif\r
119 }\r
120\r
121 free(PicoDraw2FB);\r
122\r
123 PicoExit();\r
124}\r
125\r
126void emu_prepareDefaultConfig(void)\r
127{\r
128 memset(&defaultConfig, 0, sizeof(defaultConfig));\r
84100c0f 129 defaultConfig.EmuOpt = 0x8f | 0x00600; // | <- confirm_save, cd_leds\r
3bb7bd19 130 defaultConfig.s_PicoOpt = 0x0f | POPT_EXT_FM|POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC;\r
131 defaultConfig.s_PicoOpt |= POPT_ACC_SPRITES|POPT_EN_MCD_GFX;\r
16b0afd0 132// defaultConfig.s_PicoOpt &= ~POPT_EN_SVP_DRC; // crashes :(\r
84100c0f 133 defaultConfig.EmuOpt &= ~8; // no save gzip\r
e55f0cbb 134 defaultConfig.s_PsndRate = 44100;\r
84100c0f 135 defaultConfig.s_PicoRegion = 0;\r
e55f0cbb 136 defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
137 defaultConfig.s_PicoCDBuffers = 0;\r
3bb7bd19 138 defaultConfig.Frameskip = 0;\r
e55f0cbb 139 defaultConfig.CPUclock = 200;\r
140 defaultConfig.volume = 50;\r
141 defaultConfig.scaling = 0;\r
142 defaultConfig.turbo_rate = 15;\r
143}\r
144\r
e55f0cbb 145static void textOut16(int x, int y, const char *text)\r
146{\r
147 int i,l,len=strlen(text);\r
148 unsigned int *screen = (unsigned int *)((unsigned short *)SCREEN_BUFFER + (x&~1) + y*SCREEN_WIDTH);\r
149\r
150 for (i = 0; i < len; i++)\r
151 {\r
3bb7bd19 152 for (l=0;l<16;)\r
e55f0cbb 153 {\r
154 unsigned char fd = fontdata8x8[((text[i])*8)+l/2];\r
3bb7bd19 155 unsigned int *d = &screen[l*SCREEN_WIDTH/2];\r
156 if (fd&0x80) d[0]=0xffffffff;\r
157 if (fd&0x40) d[1]=0xffffffff;\r
158 if (fd&0x20) d[2]=0xffffffff;\r
159 if (fd&0x10) d[3]=0xffffffff;\r
160 if (fd&0x08) d[4]=0xffffffff;\r
161 if (fd&0x04) d[5]=0xffffffff;\r
162 if (fd&0x02) d[6]=0xffffffff;\r
163 if (fd&0x01) d[7]=0xffffffff;\r
164 l++; d = &screen[l*SCREEN_WIDTH/2];\r
165 if (fd&0x80) d[0]=0xffffffff;\r
166 if (fd&0x40) d[1]=0xffffffff;\r
167 if (fd&0x20) d[2]=0xffffffff;\r
168 if (fd&0x10) d[3]=0xffffffff;\r
169 if (fd&0x08) d[4]=0xffffffff;\r
170 if (fd&0x04) d[5]=0xffffffff;\r
171 if (fd&0x02) d[6]=0xffffffff;\r
172 if (fd&0x01) d[7]=0xffffffff;\r
173 l++;\r
e55f0cbb 174 }\r
175 screen += 8;\r
176 }\r
177}\r
178\r
179\r
180void osd_text(int x, int y, const char *text)\r
181{\r
182 int len = strlen(text)*8;\r
183\r
184 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
185 int *p, i, h;\r
186 x &= ~3; // align x\r
187 len = (len+3) >> 2;\r
188 for (h = 0; h < 8; h++) {\r
189 p = (int *) ((unsigned char *) gp2x_screen+x+SCREEN_WIDTH*(y+h));\r
190 for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
191 }\r
192 emu_textOut8(x, y, text);\r
193 } else {\r
194 int *p, i, h;\r
195 x &= ~1; // align x\r
196 len++;\r
197 for (h = 0; h < 16; h++) {\r
198 p = (int *) ((unsigned short *) gp2x_screen+x+SCREEN_WIDTH*(y+h));\r
3bb7bd19 199 for (i = len; i; i--, p++) *p = 0;//(*p>>2)&0x39e7;\r
e55f0cbb 200 }\r
201 textOut16(x, y, text);\r
202 }\r
203}\r
204\r
205static void draw_cd_leds(void)\r
206{\r
207// static\r
208 int old_reg;\r
209// if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
210 old_reg = Pico_mcd->s68k_regs[0];\r
211\r
212 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
213 // 8-bit modes\r
214 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
215 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
216 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*2+ 4) =\r
217 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*3+ 4) =\r
218 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*4+ 4) = col_g;\r
219 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*2+12) =\r
220 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*3+12) =\r
221 *(unsigned int *)((char *)gp2x_screen + SCREEN_WIDTH*4+12) = col_r;\r
222 } else {\r
223 // 16-bit modes\r
224 unsigned int *p = (unsigned int *)((short *)gp2x_screen + SCREEN_WIDTH*2+4);\r
225 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
226 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
227 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += SCREEN_WIDTH/2 - 12/2;\r
228 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += SCREEN_WIDTH/2 - 12/2;\r
229 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
230 }\r
231}\r
232\r
233static void draw_pico_ptr(void)\r
234{\r
235 unsigned short *p = (unsigned short *)gp2x_screen;\r
236\r
237 // only if pen enabled and for 16bit modes\r
238 if (pico_inp_mode == 0 || (PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) return;\r
239\r
240 if (!(Pico.video.reg[12]&1) && !(PicoOpt&POPT_DIS_32C_BORDER))\r
241 p += 32;\r
242\r
243 p += SCREEN_WIDTH * (pico_pen_y + PICO_PEN_ADJUST_Y);\r
244 p += pico_pen_x + PICO_PEN_ADJUST_X;\r
245 p[0] ^= 0xffff;\r
246 p[319] ^= 0xffff;\r
247 p[320] ^= 0xffff;\r
248 p[321] ^= 0xffff;\r
249 p[640] ^= 0xffff;\r
250}\r
251\r
3bb7bd19 252#ifdef USE_320_SCREEN\r
253\r
254static int EmuScanBegin16(unsigned int num)\r
255{\r
256 if (!(Pico.video.reg[1]&8)) num += 8;\r
257 DrawLineDest = (unsigned short *)gp2x_screen + num*800 + 800/2 - 320/2;\r
258 //int w = (Pico.video.reg[12]&1) ? 320 : 256;\r
259 //DrawLineDest = (unsigned short *)gp2x_screen + num*w;\r
260\r
261 return 0;\r
262}\r
263\r
264#else // USE_320_SCREEN\r
265\r
e55f0cbb 266static int EmuScanEnd16(unsigned int num)\r
267{\r
268 unsigned char *ps=HighCol+8;\r
269 unsigned short *pd;\r
270 unsigned short *pal=HighPal;\r
271 int sh = Pico.video.reg[0xC]&8;\r
272 int len, mask = 0xff;\r
273\r
274 if (!(Pico.video.reg[1]&8)) num += 8;\r
275 pd=(unsigned short *)gp2x_screen + num*800*2 + 800/2 - 320*2/2;\r
276\r
277 if (Pico.m.dirtyPal)\r
278 PicoDoHighPal555(sh);\r
279\r
280 if (Pico.video.reg[12]&1) {\r
281 len = 320;\r
282 } else {\r
3bb7bd19 283 pd += 32*2;\r
e55f0cbb 284 len = 256;\r
285 }\r
286\r
efcba75f 287 if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))\r
288 mask=0x3f; // messed sprites, upper bits are priority stuff\r
e55f0cbb 289\r
3bb7bd19 290#if 1\r
291 clut_line(pd, ps, pal, (mask<<16) | len);\r
292#else\r
e55f0cbb 293 for (; len > 0; len--)\r
294 {\r
295 unsigned int p = pal[*ps++ & mask];\r
296 p |= p << 16;\r
297 *(unsigned int *)pd = p;\r
298 *(unsigned int *)(&pd[800]) = p;\r
299 pd += 2;\r
300 }\r
3bb7bd19 301#endif\r
e55f0cbb 302\r
303 return 0;\r
304}\r
305\r
3bb7bd19 306#endif // USE_320_SCREEN\r
307\r
e55f0cbb 308static int EmuScanBegin8(unsigned int num)\r
309{\r
310 if (!(Pico.video.reg[1]&8)) num += 8;\r
311 DrawLineDest = (unsigned char *) gp2x_screen + SCREEN_WIDTH * num;\r
312\r
313 return 0;\r
314}\r
315\r
316int localPal[0x100];\r
317static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
318\r
319static void blit(const char *fps, const char *notice)\r
320{\r
321 int emu_opt = currentConfig.EmuOpt;\r
322\r
323 if (PicoOpt&0x10)\r
324 {\r
325 // 8bit fast renderer\r
326 if (Pico.m.dirtyPal) {\r
327 Pico.m.dirtyPal = 0;\r
328 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
329 // feed new palette to our device\r
330 gp2x_video_setpalette(localPal, 0x40);\r
331 }\r
332 // a hack for VR\r
333 if (PicoRead16Hook == PicoSVPRead16)\r
334 memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);\r
335 // do actual copy\r
336 vidCpyM2((unsigned char *)gp2x_screen+SCREEN_WIDTH*8, PicoDraw2FB+328*8);\r
337 }\r
338 else if (!(emu_opt&0x80))\r
339 {\r
340 // 8bit accurate renderer\r
341 if (Pico.m.dirtyPal)\r
342 {\r
f8af9634 343 int pallen = 0xc0;\r
e55f0cbb 344 Pico.m.dirtyPal = 0;\r
345 if (Pico.video.reg[0xC]&8) // shadow/hilight mode\r
346 {\r
347 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
348 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
349 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
350 memcpy32(localPal+0xc0, localPal+0x40, 0x40);\r
351 pallen = 0x100;\r
352 }\r
e55f0cbb 353 else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes\r
354 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
355 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
356 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
357 pallen = 0xc0;\r
358 }\r
359 else {\r
360 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
f8af9634 361 memcpy32(localPal+0x80, localPal, 0x40);\r
e55f0cbb 362 }\r
363 if (pallen > 0xc0) {\r
364 localPal[0xc0] = 0x0000c000;\r
365 localPal[0xd0] = 0x00c00000;\r
366 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
367 localPal[0xf0] = 0x00ffffff;\r
368 }\r
369 gp2x_video_setpalette(localPal, pallen);\r
370 }\r
371 }\r
372\r
373 if (notice || (emu_opt & 2)) {\r
374 int h = SCREEN_HEIGHT-16;\r
375 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 16;\r
376 if (notice) osd_text(4, h, notice);\r
377 if (emu_opt & 2)\r
3bb7bd19 378 osd_text(osd_fps_x, h, fps);\r
e55f0cbb 379 }\r
380 if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))\r
381 draw_cd_leds();\r
382 if (PicoAHW & PAHW_PICO)\r
383 draw_pico_ptr();\r
384{\r
385//static int u=0;\r
386//memset((char *)gp2x_screen+800*471*2, (u++)>>1, 800*9*2);\r
387}\r
388\r
389 //gp2x_video_wait_vsync();\r
390 gp2x_video_flip();\r
391}\r
392\r
393\r
394// clears whole screen or just the notice area (in all buffers)\r
395static void clearArea(int full)\r
396{\r
397 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
398 // 8-bit renderers\r
399 if (full) gp2x_memset_all_buffers(0, 0xe0, SCREEN_WIDTH*240);\r
400 else gp2x_memset_all_buffers(SCREEN_WIDTH*232, 0xe0, SCREEN_WIDTH*8);\r
401 } else {\r
402 // 16bit accurate renderer\r
403 if (full) gp2x_memset_all_buffers(0, 0, SCREEN_WIDTH*SCREEN_HEIGHT*2);\r
404 else gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, 0, SCREEN_WIDTH*16*2);\r
405 }\r
406}\r
407\r
408\r
409static void vidResetMode(void)\r
410{\r
411 if (PicoOpt&0x10) {\r
412 gp2x_video_changemode(8);\r
413 } else if (currentConfig.EmuOpt&0x80) {\r
414 gp2x_video_changemode(16);\r
3bb7bd19 415#ifdef USE_320_SCREEN\r
416 PicoDrawSetColorFormat(1);\r
417 PicoScanBegin = EmuScanBegin16;\r
418#else\r
e55f0cbb 419 PicoDrawSetColorFormat(-1);\r
420 PicoScanEnd = EmuScanEnd16;\r
3bb7bd19 421#endif\r
e55f0cbb 422 } else {\r
423 gp2x_video_changemode(8);\r
424 PicoDrawSetColorFormat(2);\r
425 PicoScanBegin = EmuScanBegin8;\r
426 }\r
427 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
428 // setup pal for 8-bit modes\r
429 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
430 localPal[0xd0] = 0x00c00000;\r
431 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
432 localPal[0xf0] = 0x00ffffff;\r
433 gp2x_video_setpalette(localPal, 0x100);\r
434 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
435 gp2x_video_flip();\r
436 }\r
437 Pico.m.dirtyPal = 1;\r
438 // reset scaling\r
439 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
440 gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
441 else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
442}\r
443\r
444\r
445static void emu_msg_cb(const char *msg)\r
446{\r
447 if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
448 // 8-bit renderers\r
449 gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16), 0xe0, SCREEN_WIDTH*16);\r
450 osd_text(4, SCREEN_HEIGHT-16, msg);\r
451 gp2x_memcpy_all_buffers((char *)gp2x_screen+SCREEN_WIDTH*(SCREEN_HEIGHT-16),\r
452 SCREEN_WIDTH*(SCREEN_HEIGHT-16), SCREEN_WIDTH*16);\r
453 } else {\r
454 // 16bit accurate renderer\r
455 gp2x_memset_all_buffers(SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, 0, SCREEN_WIDTH*16*2);\r
456 osd_text(4, SCREEN_HEIGHT-16, msg);\r
457 gp2x_memcpy_all_buffers((char *)gp2x_screen+SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2,\r
458 SCREEN_WIDTH*(SCREEN_HEIGHT-16)*2, SCREEN_WIDTH*16*2);\r
459 }\r
460 gettimeofday(&noticeMsgTime, 0);\r
461 noticeMsgTime.tv_sec -= 2;\r
462\r
463 /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
464 reset_timing = 1;\r
465}\r
466\r
467static void emu_state_cb(const char *str)\r
468{\r
469 clearArea(0);\r
470 blit("", str);\r
471}\r
472\r
473static void emu_msg_tray_open(void)\r
474{\r
475 strcpy(noticeMsg, "CD tray opened");\r
476 gettimeofday(&noticeMsgTime, 0);\r
477}\r
478\r
b6820926 479#if 0\r
e55f0cbb 480static void RunEventsPico(unsigned int events, unsigned int gp2x_keys)\r
481{\r
482 int ret, px, py, lim_x;\r
483 static int pdown_frames = 0;\r
484\r
485 emu_RunEventsPico(events);\r
486\r
487 if (pico_inp_mode == 0) return;\r
488\r
489 // for F200\r
490 ret = gp2x_touchpad_read(&px, &py);\r
491 if (ret >= 0)\r
492 {\r
493 if (ret > 35000)\r
494 {\r
495 if (pdown_frames++ > 5)\r
496 PicoPad[0] |= 0x20;\r
497\r
498 pico_pen_x = px;\r
499 pico_pen_y = py;\r
500 if (!(Pico.video.reg[12]&1)) {\r
501 pico_pen_x -= 32;\r
502 if (pico_pen_x < 0) pico_pen_x = 0;\r
503 if (pico_pen_x > 248) pico_pen_x = 248;\r
504 }\r
505 if (pico_pen_y > 224) pico_pen_y = 224;\r
506 }\r
507 else\r
508 pdown_frames = 0;\r
509\r
510 //if (ret == 0)\r
511 // PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
512 }\r
513\r
514 PicoPad[0] &= ~0x0f; // release UDLR\r
515 if (gp2x_keys & GP2X_UP) pico_pen_y--;\r
516 if (gp2x_keys & GP2X_DOWN) pico_pen_y++;\r
517 if (gp2x_keys & GP2X_LEFT) pico_pen_x--;\r
518 if (gp2x_keys & GP2X_RIGHT) pico_pen_x++;\r
519\r
520 lim_x = (Pico.video.reg[12]&1) ? 319 : 255;\r
521 if (pico_pen_y < 8) pico_pen_y = 8;\r
522 if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y;\r
523 if (pico_pen_x < 0) pico_pen_x = 0;\r
524 if (pico_pen_x > lim_x-PICO_PEN_ADJUST_X) pico_pen_x = lim_x-PICO_PEN_ADJUST_X;\r
525\r
526 PicoPicohw.pen_pos[0] = pico_pen_x;\r
527 if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;\r
528 PicoPicohw.pen_pos[0] += 0x3c;\r
529 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
530}\r
b6820926 531#endif\r
e55f0cbb 532\r
533static void update_volume(int has_changed, int is_up)\r
534{\r
535 static int prev_frame = 0, wait_frames = 0;\r
536 int vol = currentConfig.volume;\r
537\r
538 if (has_changed)\r
539 {\r
540 if (vol < 5 && (PicoOpt&8) && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
541 wait_frames++;\r
542 else {\r
543 if (is_up) {\r
544 if (vol < 99) vol++;\r
545 } else {\r
546 if (vol > 0) vol--;\r
547 }\r
548 wait_frames = 0;\r
e5ab6faf 549 sndout_oss_setvol(vol, vol);\r
e55f0cbb 550 currentConfig.volume = vol;\r
551 }\r
552 sprintf(noticeMsg, "VOL: %02i", vol);\r
553 gettimeofday(&noticeMsgTime, 0);\r
554 prev_frame = Pico.m.frame_count;\r
555 }\r
556\r
557 // set the right mixer func\r
558 if (!(PicoOpt&8)) return; // just use defaults for mono\r
559 if (vol >= 5)\r
560 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
561 else {\r
562 mix_32_to_16l_level = 5 - vol;\r
563 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
564 }\r
565}\r
566\r
567static void RunEvents(unsigned int which)\r
568{\r
569 if (which & 0x1800) // save or load (but not both)\r
570 {\r
571 int do_it = 1;\r
572 if ( emu_checkSaveFile(state_slot) &&\r
573 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load\r
574 (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
b6820926 575#if 0\r
e55f0cbb 576 unsigned long keys;\r
577 blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
578 while ( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
579 usleep(50*1024);\r
580 if (keys & GP2X_X) do_it = 0;\r
581 while ( gp2x_joystick_read(1) & (GP2X_X|GP2X_Y) ) // wait for release\r
582 usleep(50*1024);\r
583 clearArea(0);\r
b6820926 584#endif\r
e55f0cbb 585 }\r
586 if (do_it) {\r
587 osd_text(4, SCREEN_HEIGHT-16, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
588 PicoStateProgressCB = emu_state_cb;\r
589 gp2x_memcpy_all_buffers(gp2x_screen, 0, SCREEN_WIDTH*SCREEN_HEIGHT*2);\r
590 emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
591 PicoStateProgressCB = NULL;\r
592 }\r
593\r
594 reset_timing = 1;\r
595 }\r
596 if (which & 0x0400) // switch renderer\r
597 {\r
598 if ( PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
599 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
600 else currentConfig.EmuOpt &= ~0x80;\r
601\r
602 vidResetMode();\r
603\r
604 if (PicoOpt&0x10) {\r
605 strcpy(noticeMsg, " 8bit fast renderer");\r
606 } else if (currentConfig.EmuOpt&0x80) {\r
607 strcpy(noticeMsg, "16bit accurate renderer");\r
608 } else {\r
609 strcpy(noticeMsg, " 8bit accurate renderer");\r
610 }\r
611\r
612 gettimeofday(&noticeMsgTime, 0);\r
613 }\r
614 if (which & 0x0300)\r
615 {\r
616 if(which&0x0200) {\r
617 state_slot -= 1;\r
618 if(state_slot < 0) state_slot = 9;\r
619 } else {\r
620 state_slot += 1;\r
621 if(state_slot > 9) state_slot = 0;\r
622 }\r
623 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
624 gettimeofday(&noticeMsgTime, 0);\r
625 }\r
626 if (which & 0x0080) {\r
627 engineState = PGS_Menu;\r
628 }\r
629}\r
630\r
631static void updateKeys(void)\r
632{\r
b6820926 633 unsigned int allActions[2] = { 0, 0 }, events;\r
e55f0cbb 634 static unsigned int prevEvents = 0;\r
e55f0cbb 635\r
b6820926 636 /* FIXME: combos, player2 */\r
637 allActions[0] = in_update();\r
e55f0cbb 638\r
639 PicoPad[0] = allActions[0] & 0xfff;\r
640 PicoPad[1] = allActions[1] & 0xfff;\r
641\r
642 if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);\r
643 if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);\r
644\r
645 events = (allActions[0] | allActions[1]) >> 16;\r
646\r
647 // volume is treated in special way and triggered every frame\r
648 if (events & 0x6000)\r
649 update_volume(1, events & 0x2000);\r
650\r
651 if ((events ^ prevEvents) & 0x40) {\r
652 emu_changeFastForward(events & 0x40);\r
653 update_volume(0, 0);\r
654 reset_timing = 1;\r
655 }\r
656\r
657 events &= ~prevEvents;\r
658\r
b6820926 659/*\r
e55f0cbb 660 if (PicoAHW == PAHW_PICO)\r
661 RunEventsPico(events, keys);\r
b6820926 662*/\r
e55f0cbb 663 if (events) RunEvents(events);\r
664 if (movie_data) emu_updateMovie();\r
665\r
666 prevEvents = (allActions[0] | allActions[1]) >> 16;\r
667}\r
668\r
669\r
670static void updateSound(int len)\r
671{\r
672 if (PicoOpt&8) len<<=1;\r
673\r
674 /* avoid writing audio when lagging behind to prevent audio lag */\r
675 if (PicoSkipFrame != 2)\r
e5ab6faf 676 sndout_oss_write(PsndOut, len<<1);\r
e55f0cbb 677}\r
678\r
679\r
680static void SkipFrame(int do_audio)\r
681{\r
682 PicoSkipFrame=do_audio ? 1 : 2;\r
683 PicoFrame();\r
684 PicoSkipFrame=0;\r
685}\r
686\r
687\r
688void emu_forcedFrame(int opts)\r
689{\r
690 int po_old = PicoOpt;\r
691 int eo_old = currentConfig.EmuOpt;\r
692\r
693 PicoOpt &= ~0x10;\r
694 PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
695 currentConfig.EmuOpt |= 0x80;\r
696\r
697 //vidResetMode();\r
3bb7bd19 698#ifdef USE_320_SCREEN\r
699 PicoDrawSetColorFormat(1);\r
700 PicoScanBegin = EmuScanBegin16;\r
701#else\r
e55f0cbb 702 PicoDrawSetColorFormat(-1);\r
703 PicoScanEnd = EmuScanEnd16;\r
3bb7bd19 704#endif\r
e55f0cbb 705 Pico.m.dirtyPal = 1;\r
706 PicoFrameDrawOnly();\r
707\r
708/*\r
709 if (!(Pico.video.reg[12]&1)) {\r
710 vidCpyM2 = vidCpyM2_32col;\r
711 clearArea(1);\r
712 } else vidCpyM2 = vidCpyM2_40col;\r
713\r
714 vidCpyM2((unsigned char *)gp2x_screen+SCREEN_WIDTH*8, PicoDraw2FB+328*8);\r
715 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
716 gp2x_video_setpalette(localPal, 0x40);\r
717*/\r
718 PicoOpt = po_old;\r
719 currentConfig.EmuOpt = eo_old;\r
720}\r
721\r
efcba75f 722void emu_platformDebugCat(char *str)\r
723{\r
724 // nothing\r
725}\r
726\r
e55f0cbb 727static void simpleWait(int thissec, int lim_time)\r
728{\r
729 struct timeval tval;\r
730\r
731 spend_cycles(1024);\r
732 gettimeofday(&tval, 0);\r
733 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
734\r
735 while (tval.tv_usec < lim_time)\r
736 {\r
737 spend_cycles(1024);\r
738 gettimeofday(&tval, 0);\r
739 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
740 }\r
741}\r
742\r
b6820926 743void emu_startSound(void)\r
744{\r
745 static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;\r
746 int target_fps = Pico.m.pal ? 50 : 60;\r
747\r
748 PsndOut = NULL;\r
749\r
750 if (currentConfig.EmuOpt & 4)\r
751 {\r
752 int snd_excess_add;\r
753 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old)\r
754 PsndRerate(Pico.m.frame_count ? 1 : 0);\r
755\r
756 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
757 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
758 PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
759 sndout_oss_start(PsndRate, 16, (PicoOpt&8)>>3);\r
760 sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r
761 PicoWriteSound = updateSound;\r
762 update_volume(0, 0);\r
763 memset(sndBuffer, 0, sizeof(sndBuffer));\r
764 PsndOut = sndBuffer;\r
765 PsndRate_old = PsndRate;\r
766 PicoOpt_old = PicoOpt;\r
767 pal_old = Pico.m.pal;\r
768 }\r
769}\r
770\r
771void emu_endSound(void)\r
772{\r
773}\r
774\r
775/* wait until we can write more sound */\r
776void emu_waitSound(void)\r
777{\r
778 // don't need to do anything, writes will block by themselves\r
779}\r
e55f0cbb 780\r
781void emu_Loop(void)\r
782{\r
e55f0cbb 783 char fpsbuff[24]; // fps count c string\r
784 struct timeval tval; // timing\r
785 int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
786 int frames_done, frames_shown, thissec; // actual frames\r
787 int oldmodes = 0, target_fps, target_frametime, lim_time, vsync_offset, i;\r
788 char *notice = 0;\r
789\r
790 printf("entered emu_Loop()\n");\r
791\r
792 fpsbuff[0] = 0;\r
793\r
794 // make sure we are in correct mode\r
795 vidResetMode();\r
e55f0cbb 796 Pico.m.dirtyPal = 1;\r
797 oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
798 emu_findKeyBindCombos();\r
799\r
800 // pal/ntsc might have changed, reset related stuff\r
801 target_fps = Pico.m.pal ? 50 : 60;\r
802 target_frametime = 1000000/target_fps;\r
803 reset_timing = 1;\r
804\r
b6820926 805 emu_startSound();\r
e55f0cbb 806\r
807 // prepare CD buffer\r
808 if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r
809\r
810 // calc vsync offset to sync timing code with vsync\r
811 if (currentConfig.EmuOpt&0x2000) {\r
812 gettimeofday(&tval, 0);\r
813 gp2x_video_wait_vsync();\r
814 gettimeofday(&tval, 0);\r
815 vsync_offset = tval.tv_usec;\r
816 while (vsync_offset >= target_frametime)\r
817 vsync_offset -= target_frametime;\r
818 if (!vsync_offset) vsync_offset++;\r
819 printf("vsync_offset: %i\n", vsync_offset);\r
820 } else\r
821 vsync_offset = 0;\r
822\r
823 frames_done = frames_shown = thissec =\r
824 pframes_done = pframes_shown = pthissec = 0;\r
825\r
826 // loop\r
827 while (engineState == PGS_Running)\r
828 {\r
829 int modes;\r
830\r
831 gettimeofday(&tval, 0);\r
832 if (reset_timing) {\r
833 reset_timing = 0;\r
834 pthissec = tval.tv_sec;\r
835 pframes_shown = pframes_done = tval.tv_usec/target_frametime;\r
836 }\r
837\r
838 // show notice message?\r
839 if (noticeMsgTime.tv_sec)\r
840 {\r
841 static int noticeMsgSum;\r
842 if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
843 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
844 clearArea(0);\r
845 notice = 0;\r
846 } else {\r
847 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
848 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
849 notice = noticeMsg;\r
850 }\r
851 }\r
852\r
853 // check for mode changes\r
854 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
855 if (modes != oldmodes)\r
856 {\r
857 int scalex = SCREEN_WIDTH;\r
858 osd_fps_x = OSD_FPS_X;\r
859 if (modes & 4) {\r
860 vidCpyM2 = vidCpyM2_40col;\r
861 } else {\r
862 if (PicoOpt & 0x100) {\r
863 vidCpyM2 = vidCpyM2_32col_nobord;\r
864 scalex = 256;\r
865 osd_fps_x = OSD_FPS_X - 64;\r
866 } else {\r
867 vidCpyM2 = vidCpyM2_32col;\r
868 }\r
869 }\r
870 if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
871 gp2x_video_RGB_setscaling(8, scalex, 224);\r
872 else gp2x_video_RGB_setscaling(0, scalex, 240);\r
873 oldmodes = modes;\r
874 clearArea(1);\r
875 }\r
876\r
877 // second changed?\r
878 if (thissec != tval.tv_sec)\r
879 {\r
880#ifdef BENCHMARK\r
881 static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
3bb7bd19 882 if (++bench == 4) {\r
e55f0cbb 883 bench = 0;\r
3bb7bd19 884 bench_fps_s = bench_fps / 4;\r
885 bf[bfp++ & 3] = bench_fps / 4;\r
e55f0cbb 886 bench_fps = 0;\r
887 }\r
888 bench_fps += frames_shown;\r
3bb7bd19 889 sprintf(fpsbuff, "%3i/%3i/%3i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
84100c0f 890 printf("%s\n", fpsbuff);\r
e55f0cbb 891#else\r
892 if (currentConfig.EmuOpt & 2) {\r
3bb7bd19 893 sprintf(fpsbuff, "%3i/%3i", frames_shown, frames_done);\r
e55f0cbb 894 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
895 }\r
896#endif\r
897 frames_shown = frames_done = 0;\r
898 thissec = tval.tv_sec;\r
899 }\r
900#ifdef PFRAMES\r
901 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
902#endif\r
903\r
904 if (pthissec != tval.tv_sec)\r
905 {\r
906 if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
907 pframes_done = pframes_shown = 0;\r
908 } else {\r
909 // it is quite common for this implementation to leave 1 fame unfinished\r
910 // when second changes, but we don't want buffer to starve.\r
911 if(PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {\r
912 updateKeys();\r
913 SkipFrame(1); pframes_done++;\r
914 }\r
915\r
916 pframes_done -= target_fps; if (pframes_done < 0) pframes_done = 0;\r
917 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;\r
918 if (pframes_shown > pframes_done) pframes_shown = pframes_done;\r
919 }\r
920 pthissec = tval.tv_sec;\r
921 }\r
922\r
923 lim_time = (pframes_done+1) * target_frametime + vsync_offset;\r
924 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
925 {\r
926 for(i = 0; i < currentConfig.Frameskip; i++) {\r
927 updateKeys();\r
928 SkipFrame(1); pframes_done++; frames_done++;\r
929 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
930 gettimeofday(&tval, 0);\r
931 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
932 if (tval.tv_usec < lim_time) { // we are too fast\r
933 simpleWait(pthissec, lim_time);\r
934 }\r
935 }\r
936 lim_time += target_frametime;\r
937 }\r
938 }\r
939 else if (tval.tv_usec > lim_time) // auto frameskip\r
940 {\r
941 // no time left for this frame - skip\r
942 if (tval.tv_usec - lim_time >= 300000) {\r
943 /* something caused a slowdown for us (disk access? cache flush?)\r
944 * try to recover by resetting timing... */\r
945 reset_timing = 1;\r
946 continue;\r
947 }\r
948 updateKeys();\r
949 SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;\r
950 continue;\r
951 }\r
952\r
953 updateKeys();\r
954 PicoFrame();\r
955\r
956 // check time\r
957 gettimeofday(&tval, 0);\r
958 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
959\r
960 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
961 reset_timing = 1;\r
16b0afd0 962#if 1\r
963 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
e55f0cbb 964 {\r
965 // sleep or vsync if we are still too fast\r
966 // usleep sleeps for ~20ms minimum, so it is not a solution here\r
967 if (!reset_timing && tval.tv_usec < lim_time)\r
968 {\r
969 // we are too fast\r
970 if (vsync_offset) {\r
971 if (lim_time - tval.tv_usec > target_frametime/2)\r
972 simpleWait(pthissec, lim_time - target_frametime/4);\r
973 gp2x_video_wait_vsync();\r
974 } else {\r
975 simpleWait(pthissec, lim_time);\r
976 }\r
977 }\r
978 }\r
16b0afd0 979#endif\r
e55f0cbb 980 blit(fpsbuff, notice);\r
981\r
982 pframes_done++; pframes_shown++;\r
983 frames_done++; frames_shown++;\r
984 }\r
985\r
986 emu_changeFastForward(0);\r
987\r
988 if (PicoAHW & PAHW_MCD) PicoCDBufferFree();\r
989\r
990 // save SRAM\r
991 if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
992 emu_state_cb("Writing SRAM/BRAM..");\r
993 emu_SaveLoadGame(0, 1);\r
994 SRam.changed = 0;\r
995 }\r
996\r
997 // if in 8bit mode, generate 16bit image for menu background\r
998 if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
999 emu_forcedFrame(POPT_EN_SOFTSCALE);\r
1000}\r
1001\r
1002\r
1003void emu_ResetGame(void)\r
1004{\r
1005 PicoReset();\r
1006 reset_timing = 1;\r
1007}\r
1008\r
fast MegaDrive/MegaCD/32X emulator