1 // (c) Copyright 2006-2009 notaz, All rights reserved.
\r
2 // Free for non-commercial use.
\r
4 // For commercial use, separate licencing terms must be obtained.
\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
18 #include <pico/pico_int.h>
\r
20 //#define USE_320_SCREEN 1
\r
23 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
\r
24 static unsigned char temp_frame[g_screen_width * g_screen_height * 2];
\r
25 unsigned char *PicoDraw2FB = temp_frame;
\r
26 const char **renderer_names = NULL;
\r
27 const char **renderer_names32x = NULL;
\r
28 char cpu_clk_name[] = "unused";
\r
31 void pemu_prep_defconfig(void)
\r
33 // XXX: move elsewhere
\r
34 g_menubg_ptr = temp_frame;
\r
36 defaultConfig.EmuOpt |= EOPT_VSYNC;
\r
39 void pemu_validate_config(void)
\r
44 static void osd_text(int x, int y, const char *text)
\r
46 int len = strlen(text)*8;
\r
52 for (h = 0; h < 8; h++) {
\r
53 p = (int *) ((unsigned char *) g_screen_ptr+x+g_screen_width*(y+h));
\r
54 for (i = len; i; i--, p++) *p = 0xe0e0e0e0;
\r
56 emu_text_out8(x, y, text);
\r
61 for (h = 0; h < 16; h++) {
\r
62 p = (int *) ((unsigned short *) g_screen_ptr+x+g_screen_width*(y+h));
\r
63 for (i = len; i; i--, p++) *p = 0;//(*p>>2)&0x39e7;
\r
65 text_out16(x, y, text);
\r
69 static void draw_cd_leds(void)
\r
73 // if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?
\r
74 old_reg = Pico_mcd->s68k_regs[0];
\r
78 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;
\r
79 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;
\r
80 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+ 4) =
\r
81 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+ 4) =
\r
82 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+ 4) = col_g;
\r
83 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+12) =
\r
84 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+12) =
\r
85 *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+12) = col_r;
\r
88 unsigned int *p = (unsigned int *)((short *)g_screen_ptr + g_screen_width*2+4);
\r
89 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;
\r
90 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;
\r
91 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;
\r
92 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;
\r
93 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
\r
97 #ifdef USE_320_SCREEN
\r
99 static int EmuScanBegin16(unsigned int num)
\r
101 DrawLineDest = (unsigned short *)g_screen_ptr + num*800 + 800/2 - 320/2;
\r
102 //int w = (Pico.video.reg[12]&1) ? 320 : 256;
\r
103 //DrawLineDest = (unsigned short *)g_screen_ptr + num*w;
\r
108 #else // USE_320_SCREEN
\r
110 static int EmuScanEnd16(unsigned int num)
\r
112 unsigned char *ps=HighCol+8;
\r
113 unsigned short *pd;
\r
114 unsigned short *pal=HighPal;
\r
115 int sh = Pico.video.reg[0xC]&8;
\r
116 int len, mask = 0xff;
\r
118 pd=(unsigned short *)g_screen_ptr + num*800*2 + 800/2 - 320*2/2;
\r
120 if (Pico.m.dirtyPal)
\r
121 PicoDoHighPal555(sh);
\r
123 if (Pico.video.reg[12]&1) {
\r
130 if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))
\r
131 mask=0x3f; // messed sprites, upper bits are priority stuff
\r
134 clut_line(pd, ps, pal, (mask<<16) | len);
\r
136 for (; len > 0; len--)
\r
138 unsigned int p = pal[*ps++ & mask];
\r
140 *(unsigned int *)pd = p;
\r
141 *(unsigned int *)(&pd[800]) = p;
\r
149 static int EmuScanEnd16_32x(unsigned int num)
\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
158 for (len = 320/2; len > 0; len--, ps++) {
\r
159 unsigned int p, p1;
\r
163 *pd = pd[800/2] = p;
\r
168 *pd = pd[800/2] = p;
\r
174 #endif // USE_320_SCREEN
\r
176 void pemu_finalize_frame(const char *fps, const char *notice)
\r
178 if (notice || (currentConfig.EmuOpt & EOPT_SHOW_FPS)) {
\r
180 osd_text(4, 464, notice);
\r
181 if (currentConfig.EmuOpt & EOPT_SHOW_FPS)
\r
182 osd_text(640, 464, fps);
\r
184 if ((PicoAHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))
\r
188 void plat_video_toggle_renderer(int change, int is_menu)
\r
190 // this will auto-select SMS/32X renderers
\r
191 PicoDrawSetOutFormat(PDF_RGB555, 1);
\r
194 void plat_video_menu_enter(int is_rom_loaded)
\r
198 void plat_video_menu_begin(void)
\r
200 memcpy32(g_screen_ptr, g_menubg_ptr, g_screen_width * g_screen_height * 2 / 4);
\r
203 void plat_video_menu_end(void)
\r
208 void plat_status_msg_clear(void)
\r
210 int s = g_screen_width * g_screen_height * 2;
\r
211 int l = g_screen_width * 16 * 2;
\r
214 for (i = 0; i < fbdev_buffer_count; i++)
\r
215 memset32((int *)((char *)fbdev_buffers[i] + s - l), 0, l / 4);
\r
218 void plat_status_msg_busy_next(const char *msg)
\r
220 plat_status_msg_clear();
\r
221 pemu_finalize_frame("", msg);
\r
223 emu_status_msg("");
\r
227 void plat_status_msg_busy_first(const char *msg)
\r
229 // memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
\r
230 plat_status_msg_busy_next(msg);
\r
233 void plat_update_volume(int has_changed, int is_up)
\r
235 static int prev_frame = 0, wait_frames = 0;
\r
236 int vol = currentConfig.volume;
\r
241 if (vol < 99) vol++;
\r
243 if (vol > 0) vol--;
\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
253 void pemu_forced_frame(int opts)
\r
255 int po_old = PicoOpt;
\r
258 PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites
\r
260 Pico.m.dirtyPal = 1;
\r
261 PicoFrameDrawOnly();
\r
266 static void updateSound(int len)
\r
271 if (PicoOpt & POPT_EN_STEREO)
\r
274 // sndout_oss_can_write() not reliable..
\r
275 if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))
\r
278 /* avoid writing audio when lagging behind to prevent audio lag */
\r
279 if (PicoSkipFrame == 2)
\r
282 t = plat_get_ticks_ms();
\r
283 sndout_oss_write(PsndOut, len);
\r
284 t = plat_get_ticks_ms() - t;
\r
286 printf("audio lag %u\n", t);
\r
289 void pemu_sound_start(void)
\r
291 int target_fps = Pico.m.pal ? 50 : 60;
\r
295 if (currentConfig.EmuOpt & EOPT_EN_SOUND)
\r
297 int snd_excess_add, frame_samples;
\r
298 int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;
\r
300 PsndRerate(Pico.m.frame_count ? 1 : 0);
\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
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
318 void pemu_sound_stop(void)
\r
323 void pemu_sound_wait(void)
\r
325 // don't need to do anything, writes will block by themselves
\r
328 void plat_debug_cat(char *str)
\r
332 void emu_video_mode_change(int start_line, int line_count, int is_32cols)
\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
340 #ifdef USE_320_SCREEN
\r
341 PicoDrawSetOutFormat(PDF_RGB555, 1);
\r
342 PicoScanBegin = EmuScanBegin16;
\r
344 if (PicoAHW & PAHW_32X) {
\r
345 DrawLineDest = (unsigned short *)temp_frame;
\r
346 PicoDrawSetOutFormat(PDF_RGB555, 1);
\r
347 PicoScanBegin = NULL;
\r
348 PicoScanEnd = EmuScanEnd16_32x;
\r
350 PicoDrawSetOutFormat(PDF_NONE, 0);
\r
351 PicoScanBegin = NULL;
\r
352 PicoScanEnd = EmuScanEnd16;
\r
357 void pemu_loop_prep(void)
\r
359 emu_video_mode_change(0, 0, 0);
\r
360 pemu_sound_start();
\r
363 void pemu_loop_end(void)
\r
365 int po_old = PicoOpt;
\r
366 int eo_old = currentConfig.EmuOpt;
\r
369 memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);
\r
371 /* do one more frame for menu bg */
\r
372 PicoOpt &= ~POPT_ALT_RENDERER;
\r
373 PicoOpt |= POPT_EN_SOFTSCALE|POPT_ACC_SPRITES;
\r
374 currentConfig.EmuOpt |= EOPT_16BPP;
\r
376 PicoDrawSetOutFormat(PDF_RGB555, 1);
\r
377 Pico.m.dirtyPal = 1;
\r
381 currentConfig.EmuOpt = eo_old;
\r
384 void plat_wait_till_us(unsigned int us_to)
\r
389 now = plat_get_ticks_us();
\r
391 // XXX: need to check NOHZ and djw kernel
\r
392 diff = (signed int)(us_to - now);
\r
393 if (diff > 10000) {
\r
394 //printf("sleep %d\n", us_to - now);
\r
395 usleep(diff * 15 / 16);
\r
396 now = plat_get_ticks_us();
\r
397 //printf(" wake %d\n", (signed)(us_to - now));
\r
400 while ((signed int)(us_to - now) > 512) {
\r
401 spend_cycles(1024);
\r
402 now = plat_get_ticks_us();
\r
407 const char *plat_get_credits(void)
\r
409 return "PicoDrive v" VERSION " (c) notaz, 2006-2009\n\n\n"
\r
411 "fDave: Cyclone 68000 core,\n"
\r
412 " base code of PicoDrive\n"
\r
413 "Reesy & FluBBa: DrZ80 core\n"
\r
414 "MAME devs: YM2612 and SN76496 cores\n"
\r
415 "rlyeh and others: minimal SDK\n"
\r
416 "Squidge: mmuhack\n"
\r
417 "Dzz: ARM940 sample\n"
\r
418 "GnoStiC / Puck2099: USB joy code\n"
\r
419 "craigix: GP2X hardware\n"
\r
420 "ketchupgun: skin design\n"
\r
422 "special thanks (for docs, ideas):\n"
\r
423 " Charles MacDonald, Haze,\n"
\r
424 " Stephane Dallongeville,\n"
\r
425 " Lordus, Exophase, Rokas,\n"
\r
426 " Nemesis, Tasco Deluxe";
\r