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