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tweaking pandora frontend
[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.scaling = SCALE_2x2_3x2;\r
53}\r
54\r
55void pemu_validate_config(void)\r
56{\r
57 currentConfig.CPUclock = get_cpu_clock();\r
58}\r
59\r
60// FIXME: cleanup\r
61static void osd_text(int x, int y, const char *text)\r
62{\r
63 int len = strlen(text)*8;\r
64\r
65 if (0) {\r
66 int *p, i, h;\r
67 x &= ~3; // align x\r
68 len = (len+3) >> 2;\r
69 for (h = 0; h < 8; h++) {\r
70 p = (int *) ((unsigned char *) g_screen_ptr+x+g_screen_width*(y+h));\r
71 for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
72 }\r
73 emu_text_out8(x, y, text);\r
74 } else {\r
75 int *p, i, h;\r
76 x &= ~1; // align x\r
77 len++;\r
78 for (h = 0; h < 16; h++) {\r
79 p = (int *) ((unsigned short *) g_screen_ptr+x+g_screen_width*(y+h));\r
80 for (i = len; i; i--, p++) *p = 0;//(*p>>2)&0x39e7;\r
81 }\r
82 text_out16(x, y, text);\r
83 }\r
84}\r
85\r
86static void draw_cd_leds(void)\r
87{\r
88// static\r
89 int old_reg;\r
90// if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
91 old_reg = Pico_mcd->s68k_regs[0];\r
92\r
93 if (0) {\r
94 // 8-bit modes\r
95 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
96 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
97 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+ 4) =\r
98 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+ 4) =\r
99 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+ 4) = col_g;\r
100 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+12) =\r
101 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+12) =\r
102 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+12) = col_r;\r
103 } else {\r
104 // 16-bit modes\r
105 unsigned int *p = (unsigned int *)((short *)g_screen_ptr + g_screen_width*2+4);\r
106 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
107 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
108 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;\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;\r
111 }\r
112}\r
113\r
114static int emuscan_1x1(unsigned int num)\r
115{\r
116 DrawLineDest = (unsigned short *)g_screen_ptr + num*800 + 800/2 - 320/2;\r
117 //int w = (Pico.video.reg[12]&1) ? 320 : 256;\r
118 //DrawLineDest = (unsigned short *)g_screen_ptr + num*w;\r
119\r
120 return 0;\r
121}\r
122\r
123#define MAKE_EMUSCAN(name_, clut_name_, offs_, len_) \\r
124static int name_(unsigned int num) \\r
125{ \\r
126 unsigned char *ps = HighCol+8; \\r
127 unsigned short *pd, *pal = HighPal; \\r
128 int sh = Pico.video.reg[0xC] & 8; \\r
129 int mask = 0xff; \\r
130 \\r
131 pd = (unsigned short *)g_screen_ptr + num*800*2 + offs_;\\r
132 \\r
133 if (Pico.m.dirtyPal) \\r
134 PicoDoHighPal555(sh); \\r
135 \\r
136 if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI)) \\r
137 mask = 0x3f; /* upper bits are priority stuff */\\r
138 \\r
139 clut_line##clut_name_(pd, ps, pal, (mask<<16) | len_); \\r
140 \\r
141 return 0; \\r
142}\r
143\r
144MAKE_EMUSCAN(emuscan_2x2_40, 2x2, 800/2 - 320*2/2, 320)\r
145MAKE_EMUSCAN(emuscan_2x2_32, 2x2, 800/2 - 256*2/2, 256)\r
146MAKE_EMUSCAN(emuscan_3x2_32, 3x2, 800/2 - 256*3/2, 256)\r
147\r
148#if 0 /* FIXME */\r
149static int EmuScanEnd16_32x(unsigned int num)\r
150{\r
151 unsigned int *ps;\r
152 unsigned int *pd;\r
153 int len;\r
154\r
155 ps = (unsigned int *)temp_frame;\r
156 pd = (unsigned int *)g_screen_ptr + (num*800*2 + 800/2 - 320*2/2) / 2;\r
157\r
158 for (len = 320/2; len > 0; len--, ps++) {\r
159 unsigned int p, p1;\r
160 p1 = *ps;\r
161 p = p1 << 16;\r
162 p |= p >> 16;\r
163 *pd = pd[800/2] = p;\r
164 pd++;\r
165\r
166 p = p1 >> 16;\r
167 p |= p << 16;\r
168 *pd = pd[800/2] = p;\r
169 pd++;\r
170 }\r
171\r
172 return 0;\r
173}\r
174#endif\r
175\r
176void pemu_finalize_frame(const char *fps, const char *notice)\r
177{\r
178 if (notice || (currentConfig.EmuOpt & EOPT_SHOW_FPS)) {\r
179 if (notice)\r
180 osd_text(4, 464, notice);\r
181 if (currentConfig.EmuOpt & EOPT_SHOW_FPS)\r
182 osd_text(640, 464, fps);\r
183 }\r
184 if ((PicoAHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))\r
185 draw_cd_leds();\r
186}\r
187\r
188void plat_video_toggle_renderer(int change, int is_menu)\r
189{\r
190 // this will auto-select SMS/32X renderers\r
191 PicoDrawSetOutFormat(PDF_RGB555, 1);\r
192}\r
193\r
194void plat_video_menu_enter(int is_rom_loaded)\r
195{\r
196}\r
197\r
198void plat_video_menu_begin(void)\r
199{\r
200 memcpy32(g_screen_ptr, g_menubg_ptr, g_screen_width * g_screen_height * 2 / 4);\r
201}\r
202\r
203void plat_video_menu_end(void)\r
204{\r
205 plat_video_flip();\r
206}\r
207\r
208void plat_status_msg_clear(void)\r
209{\r
210 int s = g_screen_width * g_screen_height * 2;\r
211 int l = g_screen_width * 16 * 2;\r
212 int i;\r
213\r
214 for (i = 0; i < fbdev_buffer_count; i++)\r
215 memset32((int *)((char *)fbdev_buffers[i] + s - l), 0, l / 4);\r
216}\r
217\r
218void plat_status_msg_busy_next(const char *msg)\r
219{\r
220 plat_status_msg_clear();\r
221 pemu_finalize_frame("", msg);\r
222 plat_video_flip();\r
223 emu_status_msg("");\r
224 reset_timing = 1;\r
225}\r
226\r
227void plat_status_msg_busy_first(const char *msg)\r
228{\r
229// memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r
230 plat_status_msg_busy_next(msg);\r
231}\r
232\r
233void plat_update_volume(int has_changed, int is_up)\r
234{\r
235 static int prev_frame = 0, wait_frames = 0;\r
236 int vol = currentConfig.volume;\r
237\r
238 if (has_changed)\r
239 {\r
240 if (is_up) {\r
241 if (vol < 99) vol++;\r
242 } else {\r
243 if (vol > 0) vol--;\r
244 }\r
245 wait_frames = 0;\r
246 sndout_oss_setvol(vol, vol);\r
247 currentConfig.volume = vol;\r
248 emu_status_msg("VOL: %02i", vol);\r
249 prev_frame = Pico.m.frame_count;\r
250 }\r
251}\r
252\r
253void pemu_forced_frame(int opts)\r
254{\r
255 int po_old = PicoOpt;\r
256\r
257 PicoOpt &= ~0x10;\r
258 PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
259\r
260 Pico.m.dirtyPal = 1;\r
261 PicoFrameDrawOnly();\r
262\r
263 PicoOpt = po_old;\r
264}\r
265\r
266static void updateSound(int len)\r
267{\r
268 unsigned int t;\r
269\r
270 len <<= 1;\r
271 if (PicoOpt & POPT_EN_STEREO)\r
272 len <<= 1;\r
273\r
274 // sndout_oss_can_write() not reliable..\r
275 if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))\r
276 return;\r
277\r
278 /* avoid writing audio when lagging behind to prevent audio lag */\r
279 if (PicoSkipFrame == 2)\r
280 return;\r
281\r
282 t = plat_get_ticks_ms();\r
283 sndout_oss_write(PsndOut, len);\r
284 t = plat_get_ticks_ms() - t;\r
285 if (t > 1)\r
286 printf("audio lag %u\n", t);\r
287}\r
288\r
289void pemu_sound_start(void)\r
290{\r
291 int target_fps = Pico.m.pal ? 50 : 60;\r
292\r
293 PsndOut = NULL;\r
294\r
295 if (currentConfig.EmuOpt & EOPT_EN_SOUND)\r
296 {\r
297 int snd_excess_add, frame_samples;\r
298 int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;\r
299\r
300 PsndRerate(Pico.m.frame_count ? 1 : 0);\r
301\r
302 frame_samples = PsndLen;\r
303 snd_excess_add = ((PsndRate - PsndLen * target_fps)<<16) / target_fps;\r
304 if (snd_excess_add != 0)\r
305 frame_samples++;\r
306\r
307 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
308 PsndRate, PsndLen, snd_excess_add, is_stereo, Pico.m.pal);\r
309 sndout_oss_start(PsndRate, frame_samples * 2, is_stereo);\r
310 //sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r
311 PicoWriteSound = updateSound;\r
312 plat_update_volume(0, 0);\r
313 memset(sndBuffer, 0, sizeof(sndBuffer));\r
314 PsndOut = sndBuffer;\r
315 }\r
316}\r
317\r
318void pemu_sound_stop(void)\r
319{\r
320 sndout_oss_stop();\r
321}\r
322\r
323void pemu_sound_wait(void)\r
324{\r
325 // don't need to do anything, writes will block by themselves\r
326}\r
327\r
328void plat_debug_cat(char *str)\r
329{\r
330}\r
331\r
332void emu_video_mode_change(int start_line, int line_count, int is_32cols)\r
333{\r
334 int i;\r
335\r
336 // clear whole screen in all buffers\r
337 for (i = 0; i < fbdev_buffer_count; i++)\r
338 memset32(fbdev_buffers[i], 0, g_screen_width * g_screen_height * 2 / 4);\r
339\r
340 PicoScanBegin = NULL;\r
341 PicoScanEnd = NULL;\r
342\r
343#if 0\r
344 if (PicoAHW & PAHW_32X) {\r
345 /* FIXME */\r
346 DrawLineDest = (unsigned short *)temp_frame;\r
347 PicoDrawSetOutFormat(PDF_RGB555, 1);\r
348 PicoScanEnd = EmuScanEnd16_32x;\r
349 } else\r
350#endif\r
351 {\r
352 switch (currentConfig.scaling) {\r
353 case SCALE_1x1:\r
354 PicoDrawSetOutFormat(PDF_RGB555, 1);\r
355 PicoScanBegin = emuscan_1x1;\r
356 break;\r
357 case SCALE_2x2_3x2:\r
358 PicoDrawSetOutFormat(PDF_NONE, 0);\r
359 PicoScanEnd = is_32cols ? emuscan_3x2_32 : emuscan_2x2_40;\r
360 break;\r
361 case SCALE_2x2_2x2:\r
362 PicoDrawSetOutFormat(PDF_NONE, 0);\r
363 PicoScanEnd = is_32cols ? emuscan_2x2_32 : emuscan_2x2_40;\r
364 break;\r
365 }\r
366 }\r
367}\r
368\r
369void pemu_loop_prep(void)\r
370{\r
371 emu_video_mode_change(0, 0, 0);\r
372 \r
373 if (currentConfig.CPUclock != get_cpu_clock()) {\r
374 FILE *f = fopen("/proc/pandora/cpu_mhz_max", "w");\r
375 if (f != NULL) {\r
376 fprintf(f, "%d\n", currentConfig.CPUclock);\r
377 fclose(f);\r
378 }\r
379 }\r
380\r
381 pemu_sound_start();\r
382}\r
383\r
384void pemu_loop_end(void)\r
385{\r
386 int po_old = PicoOpt;\r
387 int eo_old = currentConfig.EmuOpt;\r
388\r
389 pemu_sound_stop();\r
390 memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r
391\r
392 /* do one more frame for menu bg */\r
393 PicoOpt &= ~POPT_ALT_RENDERER;\r
394 PicoOpt |= POPT_EN_SOFTSCALE|POPT_ACC_SPRITES;\r
395 currentConfig.EmuOpt |= EOPT_16BPP;\r
396\r
397 PicoDrawSetOutFormat(PDF_RGB555, 1);\r
398 Pico.m.dirtyPal = 1;\r
399 PicoFrame();\r
400\r
401 PicoOpt = po_old;\r
402 currentConfig.EmuOpt = eo_old;\r
403}\r
404\r
405void plat_wait_till_us(unsigned int us_to)\r
406{\r
407 unsigned int now;\r
408 signed int diff;\r
409\r
410 now = plat_get_ticks_us();\r
411\r
412 // XXX: need to check NOHZ\r
413 diff = (signed int)(us_to - now);\r
414 if (diff > 10000) {\r
415 //printf("sleep %d\n", us_to - now);\r
416 usleep(diff * 15 / 16);\r
417 now = plat_get_ticks_us();\r
418 //printf(" wake %d\n", (signed)(us_to - now));\r
419 }\r
420/*\r
421 while ((signed int)(us_to - now) > 512) {\r
422 spend_cycles(1024);\r
423 now = plat_get_ticks_us();\r
424 }\r
425*/\r
426}\r
427\r
428const char *plat_get_credits(void)\r
429{\r
430 return "PicoDrive v" VERSION " (c) notaz, 2006-2010\n\n\n"\r
431 "Credits:\n"\r
432 "fDave: Cyclone 68000 core,\n"\r
433 " base code of PicoDrive\n"\r
434 "Reesy & FluBBa: DrZ80 core\n"\r
435 "MAME devs: YM2612 and SN76496 cores\n"\r
436 "Pandora team: Pandora\n"\r
437 "Inder: menu bg\n"\r
438 "\n"\r
439 "special thanks (for docs, ideas):\n"\r
440 " Charles MacDonald, Haze,\n"\r
441 " Stephane Dallongeville,\n"\r
442 " Lordus, Exophase, Rokas,\n"\r
443 " Nemesis, Tasco Deluxe";\r
444}\r
PicoDrive's frontend in a lib