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some pandora tweaks
[libpicofe.git] / pandora / 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 <unistd.h>\r
8\r
9#include "../common/emu.h"\r
10#include "../common/menu.h"\r
11#include "../common/plat.h"\r
12#include "../common/arm_utils.h"\r
13#include "../linux/sndout_oss.h"\r
14#include "../linux/fbdev.h"\r
15#include "asm_utils.h"\r
16#include "version.h"\r
17\r
18#include <pico/pico_int.h>\r
19\r
20\r
21static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
22static unsigned char temp_frame[g_screen_width * g_screen_height * 2];\r
23unsigned char *PicoDraw2FB = temp_frame;\r
24const char *renderer_names[] = { NULL };\r
25const char *renderer_names32x[] = { NULL };\r
26char cpu_clk_name[] = "Max CPU clock";\r
27\r
28enum {\r
29 SCALE_1x1,\r
30 SCALE_2x2_3x2,\r
31 SCALE_2x2_2x2,\r
32};\r
33\r
34static int get_cpu_clock(void)\r
35{\r
36 FILE *f;\r
37 int ret = 0;\r
38 f = fopen("/proc/pandora/cpu_mhz_max", "r");\r
39 if (f) {\r
40 fscanf(f, "%d", &ret);\r
41 fclose(f);\r
42 }\r
43 return ret;\r
44}\r
45\r
46void pemu_prep_defconfig(void)\r
47{\r
48 // XXX: move elsewhere\r
49 g_menubg_ptr = temp_frame;\r
50\r
51 defaultConfig.EmuOpt |= EOPT_VSYNC;\r
52 defaultConfig.s_PicoOpt |= POPT_EN_MCD_GFX|POPT_EN_MCD_PSYNC;\r
53 defaultConfig.scaling = SCALE_2x2_3x2;\r
54}\r
55\r
56void pemu_validate_config(void)\r
57{\r
58 currentConfig.CPUclock = get_cpu_clock();\r
59}\r
60\r
61// FIXME: cleanup\r
62static void osd_text(int x, int y, const char *text)\r
63{\r
64 int len = strlen(text)*8;\r
65\r
66 if (0) {\r
67 int *p, i, h;\r
68 x &= ~3; // align x\r
69 len = (len+3) >> 2;\r
70 for (h = 0; h < 8; h++) {\r
71 p = (int *) ((unsigned char *) g_screen_ptr+x+g_screen_width*(y+h));\r
72 for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
73 }\r
74 emu_text_out8(x, y, text);\r
75 } else {\r
76 int *p, i, h;\r
77 x &= ~1; // align x\r
78 len++;\r
79 for (h = 0; h < 16; h++) {\r
80 p = (int *) ((unsigned short *) g_screen_ptr+x+g_screen_width*(y+h));\r
81 for (i = len; i; i--, p++) *p = 0;//(*p>>2)&0x39e7;\r
82 }\r
83 text_out16(x, y, text);\r
84 }\r
85}\r
86\r
87static void draw_cd_leds(void)\r
88{\r
89// static\r
90 int old_reg;\r
91// if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
92 old_reg = Pico_mcd->s68k_regs[0];\r
93\r
94 if (0) {\r
95 // 8-bit modes\r
96 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
97 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
98 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+ 4) =\r
99 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+ 4) =\r
100 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+ 4) = col_g;\r
101 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+12) =\r
102 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+12) =\r
103 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+12) = col_r;\r
104 } else {\r
105 // 16-bit modes\r
106 unsigned int *p = (unsigned int *)((short *)g_screen_ptr + g_screen_width*2+4);\r
107 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
108 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
109 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;\r
110 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;\r
111 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
112 }\r
113}\r
114\r
115static int emuscan_1x1(unsigned int num)\r
116{\r
117 DrawLineDest = (unsigned short *)g_screen_ptr +\r
118 g_screen_width * g_screen_height / 2 - g_screen_width * 240 / 2 +\r
119 num*g_screen_width + g_screen_width/2 - 320/2;\r
120\r
121 return 0;\r
122}\r
123\r
124#define MAKE_EMUSCAN(name_, clut_name_, offs_, len_) \\r
125static int name_(unsigned int num) \\r
126{ \\r
127 unsigned char *ps = HighCol+8; \\r
128 unsigned short *pd, *pal = HighPal; \\r
129 int sh = Pico.video.reg[0xC] & 8; \\r
130 int mask = 0xff; \\r
131 \\r
132 pd = (unsigned short *)g_screen_ptr + num*800*2 + offs_;\\r
133 \\r
134 if (Pico.m.dirtyPal) \\r
135 PicoDoHighPal555(sh); \\r
136 \\r
137 if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI)) \\r
138 mask = 0x3f; /* upper bits are priority stuff */\\r
139 \\r
140 clut_line##clut_name_(pd, ps, pal, (mask<<16) | len_); \\r
141 \\r
142 return 0; \\r
143}\r
144\r
145MAKE_EMUSCAN(emuscan_2x2_40, 2x2, 800/2 - 320*2/2, 320)\r
146MAKE_EMUSCAN(emuscan_2x2_32, 2x2, 800/2 - 256*2/2, 256)\r
147MAKE_EMUSCAN(emuscan_3x2_32, 3x2, 800/2 - 256*3/2, 256)\r
148\r
149#if 0 /* FIXME */\r
150static int EmuScanEnd16_32x(unsigned int num)\r
151{\r
152 unsigned int *ps;\r
153 unsigned int *pd;\r
154 int len;\r
155\r
156 ps = (unsigned int *)temp_frame;\r
157 pd = (unsigned int *)g_screen_ptr + (num*800*2 + 800/2 - 320*2/2) / 2;\r
158\r
159 for (len = 320/2; len > 0; len--, ps++) {\r
160 unsigned int p, p1;\r
161 p1 = *ps;\r
162 p = p1 << 16;\r
163 p |= p >> 16;\r
164 *pd = pd[800/2] = p;\r
165 pd++;\r
166\r
167 p = p1 >> 16;\r
168 p |= p << 16;\r
169 *pd = pd[800/2] = p;\r
170 pd++;\r
171 }\r
172\r
173 return 0;\r
174}\r
175#endif\r
176\r
177void pemu_finalize_frame(const char *fps, const char *notice)\r
178{\r
179 if (notice || (currentConfig.EmuOpt & EOPT_SHOW_FPS)) {\r
180 if (notice)\r
181 osd_text(4, 464, notice);\r
182 if (currentConfig.EmuOpt & EOPT_SHOW_FPS)\r
183 osd_text(640, 464, fps);\r
184 }\r
185 if ((PicoAHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))\r
186 draw_cd_leds();\r
187}\r
188\r
189void plat_video_toggle_renderer(int change, int is_menu)\r
190{\r
191 // this will auto-select SMS/32X renderers\r
192 PicoDrawSetOutFormat(PDF_RGB555, 1);\r
193}\r
194\r
195void plat_video_menu_enter(int is_rom_loaded)\r
196{\r
197}\r
198\r
199void plat_video_menu_begin(void)\r
200{\r
201 memcpy32(g_screen_ptr, g_menubg_ptr, g_screen_width * g_screen_height * 2 / 4);\r
202}\r
203\r
204void plat_video_menu_end(void)\r
205{\r
206 plat_video_flip();\r
207}\r
208\r
209void plat_status_msg_clear(void)\r
210{\r
211 int s = g_screen_width * g_screen_height * 2;\r
212 int l = g_screen_width * 16 * 2;\r
213 int i;\r
214\r
215 for (i = 0; i < fbdev_buffer_count; i++)\r
216 memset32((int *)((char *)fbdev_buffers[i] + s - l), 0, l / 4);\r
217}\r
218\r
219void plat_status_msg_busy_next(const char *msg)\r
220{\r
221 plat_status_msg_clear();\r
222 pemu_finalize_frame("", msg);\r
223 plat_video_flip();\r
224 emu_status_msg("");\r
225 reset_timing = 1;\r
226}\r
227\r
228void plat_status_msg_busy_first(const char *msg)\r
229{\r
230// memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r
231 plat_status_msg_busy_next(msg);\r
232}\r
233\r
234void plat_update_volume(int has_changed, int is_up)\r
235{\r
236 static int prev_frame = 0, wait_frames = 0;\r
237 int vol = currentConfig.volume;\r
238\r
239 if (has_changed)\r
240 {\r
241 if (is_up) {\r
242 if (vol < 99) vol++;\r
243 } else {\r
244 if (vol > 0) vol--;\r
245 }\r
246 wait_frames = 0;\r
247 sndout_oss_setvol(vol, vol);\r
248 currentConfig.volume = vol;\r
249 emu_status_msg("VOL: %02i", vol);\r
250 prev_frame = Pico.m.frame_count;\r
251 }\r
252}\r
253\r
254void pemu_forced_frame(int opts, int no_scale)\r
255{\r
256 int oldscale = currentConfig.scaling;\r
257 int po_old = PicoOpt;\r
258\r
259 if (no_scale) {\r
260 currentConfig.scaling = SCALE_1x1;\r
261 emu_video_mode_change(0, 0, 0);\r
262 }\r
263\r
264 PicoOpt &= ~POPT_ALT_RENDERER;\r
265 PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
266\r
267 Pico.m.dirtyPal = 1;\r
268 PicoFrameDrawOnly();\r
269\r
270 PicoOpt = po_old;\r
271 currentConfig.scaling = oldscale;\r
272}\r
273\r
274static void updateSound(int len)\r
275{\r
276 unsigned int t;\r
277\r
278 len <<= 1;\r
279 if (PicoOpt & POPT_EN_STEREO)\r
280 len <<= 1;\r
281\r
282 // sndout_oss_can_write() not reliable..\r
283 if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))\r
284 return;\r
285\r
286 /* avoid writing audio when lagging behind to prevent audio lag */\r
287 if (PicoSkipFrame == 2)\r
288 return;\r
289\r
290 t = plat_get_ticks_ms();\r
291 sndout_oss_write(PsndOut, len);\r
292 t = plat_get_ticks_ms() - t;\r
293 if (t > 1)\r
294 printf("audio lag %u\n", t);\r
295}\r
296\r
297void pemu_sound_start(void)\r
298{\r
299 int target_fps = Pico.m.pal ? 50 : 60;\r
300\r
301 PsndOut = NULL;\r
302\r
303 if (currentConfig.EmuOpt & EOPT_EN_SOUND)\r
304 {\r
305 int snd_excess_add, frame_samples;\r
306 int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;\r
307\r
308 PsndRerate(Pico.m.frame_count ? 1 : 0);\r
309\r
310 frame_samples = PsndLen;\r
311 snd_excess_add = ((PsndRate - PsndLen * target_fps)<<16) / target_fps;\r
312 if (snd_excess_add != 0)\r
313 frame_samples++;\r
314\r
315 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
316 PsndRate, PsndLen, snd_excess_add, is_stereo, Pico.m.pal);\r
317 sndout_oss_start(PsndRate, frame_samples * 2, is_stereo);\r
318 //sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r
319 PicoWriteSound = updateSound;\r
320 plat_update_volume(0, 0);\r
321 memset(sndBuffer, 0, sizeof(sndBuffer));\r
322 PsndOut = sndBuffer;\r
323 }\r
324}\r
325\r
326void pemu_sound_stop(void)\r
327{\r
328 sndout_oss_stop();\r
329}\r
330\r
331void pemu_sound_wait(void)\r
332{\r
333 // don't need to do anything, writes will block by themselves\r
334}\r
335\r
336void plat_debug_cat(char *str)\r
337{\r
338}\r
339\r
340void emu_video_mode_change(int start_line, int line_count, int is_32cols)\r
341{\r
342 int i;\r
343\r
344 // clear whole screen in all buffers\r
345 for (i = 0; i < fbdev_buffer_count; i++)\r
346 memset32(fbdev_buffers[i], 0, g_screen_width * g_screen_height * 2 / 4);\r
347\r
348 PicoScanBegin = NULL;\r
349 PicoScanEnd = NULL;\r
350\r
351#if 0\r
352 if (PicoAHW & PAHW_32X) {\r
353 /* FIXME */\r
354 DrawLineDest = (unsigned short *)temp_frame;\r
355 PicoDrawSetOutFormat(PDF_RGB555, 1);\r
356 PicoScanEnd = EmuScanEnd16_32x;\r
357 } else\r
358#endif\r
359 {\r
360 switch (currentConfig.scaling) {\r
361 case SCALE_1x1:\r
362 PicoDrawSetOutFormat(PDF_RGB555, 1);\r
363 PicoScanBegin = emuscan_1x1;\r
364 break;\r
365 case SCALE_2x2_3x2:\r
366 PicoDrawSetOutFormat(PDF_NONE, 0);\r
367 PicoScanEnd = is_32cols ? emuscan_3x2_32 : emuscan_2x2_40;\r
368 break;\r
369 case SCALE_2x2_2x2:\r
370 PicoDrawSetOutFormat(PDF_NONE, 0);\r
371 PicoScanEnd = is_32cols ? emuscan_2x2_32 : emuscan_2x2_40;\r
372 break;\r
373 }\r
374 }\r
375}\r
376\r
377void pemu_loop_prep(void)\r
378{\r
379 if (currentConfig.CPUclock != get_cpu_clock()) {\r
380 char buf[64];\r
381 snprintf(buf, sizeof(buf), "sudo /usr/pandora/scripts/op_cpuspeed.sh %d",\r
382 currentConfig.CPUclock);\r
383 system(buf);\r
384 }\r
385\r
386 pemu_sound_start();\r
387}\r
388\r
389void pemu_loop_end(void)\r
390{\r
391 int po_old = PicoOpt;\r
392 int eo_old = currentConfig.EmuOpt;\r
393\r
394 pemu_sound_stop();\r
395 memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r
396\r
397 /* do one more frame for menu bg */\r
398 PicoOpt &= ~POPT_ALT_RENDERER;\r
399 PicoOpt |= POPT_EN_SOFTSCALE|POPT_ACC_SPRITES;\r
400 currentConfig.EmuOpt |= EOPT_16BPP;\r
401\r
402 PicoDrawSetOutFormat(PDF_RGB555, 1);\r
403 Pico.m.dirtyPal = 1;\r
404 PicoFrame();\r
405\r
406 PicoOpt = po_old;\r
407 currentConfig.EmuOpt = eo_old;\r
408}\r
409\r
410void plat_wait_till_us(unsigned int us_to)\r
411{\r
412 unsigned int now;\r
413 signed int diff;\r
414\r
415 now = plat_get_ticks_us();\r
416\r
417 // XXX: need to check NOHZ\r
418 diff = (signed int)(us_to - now);\r
419 if (diff > 10000) {\r
420 //printf("sleep %d\n", us_to - now);\r
421 usleep(diff * 15 / 16);\r
422 now = plat_get_ticks_us();\r
423 //printf(" wake %d\n", (signed)(us_to - now));\r
424 }\r
425/*\r
426 while ((signed int)(us_to - now) > 512) {\r
427 spend_cycles(1024);\r
428 now = plat_get_ticks_us();\r
429 }\r
430*/\r
431}\r
432\r
433const char *plat_get_credits(void)\r
434{\r
435 return "PicoDrive v" VERSION " (c) notaz, 2006-2010\n\n\n"\r
436 "Credits:\n"\r
437 "fDave: Cyclone 68000 core,\n"\r
438 " base code of PicoDrive\n"\r
439 "Reesy & FluBBa: DrZ80 core\n"\r
440 "MAME devs: YM2612 and SN76496 cores\n"\r
441 "Pandora team: Pandora\n"\r
442 "Inder, ketchupgun: graphics\n"\r
443 "\n"\r
444 "special thanks (for docs, ideas):\n"\r
445 " Charles MacDonald, Haze,\n"\r
446 " Stephane Dallongeville,\n"\r
447 " Lordus, Exophase, Rokas,\n"\r
448 " Nemesis, Tasco Deluxe";\r
449}\r
PicoDrive's frontend in a lib