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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 "version.h"\r |
15 | \r |
16 | #include <pico/pico_int.h>\r |
17 | \r |
18 | \r |
19 | static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r |
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20 | char cpu_clk_name[] = "unused";\r |
21 | \r |
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22 | \r |
23 | void pemu_prep_defconfig(void)\r |
24 | {\r |
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25 | }\r |
26 | \r |
27 | void pemu_validate_config(void)\r |
28 | {\r |
29 | extern int PicoOpt;\r |
30 | // PicoOpt &= ~POPT_EXT_FM;\r |
31 | PicoOpt &= ~POPT_EN_SVP_DRC;\r |
32 | }\r |
33 | \r |
34 | // FIXME: dupes from GP2X, need cleanup\r |
35 | static void (*osd_text)(int x, int y, const char *text);\r |
36 | \r |
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37 | /*\r |
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38 | static void osd_text8(int x, int y, const char *text)\r |
39 | {\r |
40 | int len = strlen(text)*8;\r |
41 | int *p, i, h, offs;\r |
42 | \r |
43 | len = (len+3) >> 2;\r |
44 | for (h = 0; h < 8; h++) {\r |
45 | offs = (x + g_screen_width * (y+h)) & ~3;\r |
46 | p = (int *) ((char *)g_screen_ptr + offs);\r |
47 | for (i = len; i; i--, p++)\r |
48 | *p = 0xe0e0e0e0;\r |
49 | }\r |
50 | emu_text_out8(x, y, text);\r |
51 | }\r |
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52 | */\r |
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53 | \r |
54 | static void osd_text16(int x, int y, const char *text)\r |
55 | {\r |
56 | int len = strlen(text)*8;\r |
57 | int *p, i, h, offs;\r |
58 | \r |
59 | len = (len+1) >> 1;\r |
60 | for (h = 0; h < 8; h++) {\r |
61 | offs = (x + g_screen_width * (y+h)) & ~1;\r |
62 | p = (int *) ((short *)g_screen_ptr + offs);\r |
63 | for (i = len; i; i--, p++)\r |
64 | *p = (*p >> 2) & 0x39e7;\r |
65 | }\r |
66 | emu_text_out16(x, y, text);\r |
67 | }\r |
68 | \r |
69 | static void draw_cd_leds(void)\r |
70 | {\r |
71 | int led_reg, pitch, scr_offs, led_offs;\r |
72 | led_reg = Pico_mcd->s68k_regs[0];\r |
73 | \r |
74 | pitch = 320;\r |
75 | led_offs = 4;\r |
76 | scr_offs = pitch * 2 + 4;\r |
77 | \r |
78 | if ((PicoOpt & POPT_ALT_RENDERER) || !(currentConfig.EmuOpt & EOPT_16BPP)) {\r |
79 | #define p(x) px[(x) >> 2]\r |
80 | // 8-bit modes\r |
81 | unsigned int *px = (unsigned int *)((char *)g_screen_ptr + scr_offs);\r |
82 | unsigned int col_g = (led_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r |
83 | unsigned int col_r = (led_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r |
84 | p(pitch*0) = p(pitch*1) = p(pitch*2) = col_g;\r |
85 | p(pitch*0 + led_offs) = p(pitch*1 + led_offs) = p(pitch*2 + led_offs) = col_r;\r |
86 | #undef p\r |
87 | } else {\r |
88 | #define p(x) px[(x)*2 >> 2] = px[((x)*2 >> 2) + 1]\r |
89 | // 16-bit modes\r |
90 | unsigned int *px = (unsigned int *)((short *)g_screen_ptr + scr_offs);\r |
91 | unsigned int col_g = (led_reg & 2) ? 0x06000600 : 0;\r |
92 | unsigned int col_r = (led_reg & 1) ? 0xc000c000 : 0;\r |
93 | p(pitch*0) = p(pitch*1) = p(pitch*2) = col_g;\r |
94 | p(pitch*0 + led_offs) = p(pitch*1 + led_offs) = p(pitch*2 + led_offs) = col_r;\r |
95 | #undef p\r |
96 | }\r |
97 | }\r |
98 | \r |
99 | static int EmuScanBegin16(unsigned int num)\r |
100 | {\r |
101 | DrawLineDest = (unsigned short *)g_screen_ptr + num * g_screen_width;\r |
102 | \r |
103 | return 0;\r |
104 | }\r |
105 | \r |
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106 | void pemu_finalize_frame(const char *fps, const char *notice)\r |
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107 | {\r |
108 | if (notice || (currentConfig.EmuOpt & EOPT_SHOW_FPS)) {\r |
109 | if (notice)\r |
110 | osd_text(4, g_screen_height - 8, notice);\r |
111 | if (currentConfig.EmuOpt & EOPT_SHOW_FPS)\r |
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112 | osd_text(g_screen_width - 60, g_screen_height - 8, fps);\r |
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113 | }\r |
114 | if ((PicoAHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))\r |
115 | draw_cd_leds();\r |
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116 | }\r |
117 | \r |
118 | void plat_video_toggle_renderer(int is_next, int force_16bpp, int is_menu)\r |
119 | {\r |
120 | // this will auto-select SMS/32X renderers\r |
121 | PicoDrawSetColorFormat(1);\r |
122 | }\r |
123 | \r |
124 | void plat_video_menu_enter(int is_rom_loaded)\r |
125 | {\r |
126 | }\r |
127 | \r |
128 | void plat_video_menu_begin(void)\r |
129 | {\r |
130 | memcpy32(g_screen_ptr, g_menubg_ptr, g_screen_width * g_screen_height * 2 / 4);\r |
131 | }\r |
132 | \r |
133 | void plat_video_menu_end(void)\r |
134 | {\r |
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135 | plat_video_flip();\r |
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136 | }\r |
137 | \r |
138 | void plat_status_msg_clear(void)\r |
139 | {\r |
140 | unsigned short *d = (unsigned short *)g_screen_ptr + g_screen_width * g_screen_height;\r |
141 | int l = g_screen_width * 8;\r |
142 | memset32((int *)(d - l), 0, l * 2 / 4);\r |
143 | }\r |
144 | \r |
145 | void plat_status_msg_busy_next(const char *msg)\r |
146 | {\r |
147 | plat_status_msg_clear();\r |
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148 | pemu_finalize_frame("", msg);\r |
149 | plat_video_flip();\r |
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150 | emu_status_msg("");\r |
151 | reset_timing = 1;\r |
152 | }\r |
153 | \r |
154 | void plat_status_msg_busy_first(const char *msg)\r |
155 | {\r |
156 | // memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r |
157 | plat_status_msg_busy_next(msg);\r |
158 | }\r |
159 | \r |
160 | void plat_update_volume(int has_changed, int is_up)\r |
161 | {\r |
162 | }\r |
163 | \r |
164 | void pemu_forced_frame(int opts)\r |
165 | {\r |
166 | int po_old = PicoOpt;\r |
167 | int eo_old = currentConfig.EmuOpt;\r |
168 | \r |
169 | PicoOpt &= ~POPT_ALT_RENDERER;\r |
170 | PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r |
171 | currentConfig.EmuOpt |= EOPT_16BPP;\r |
172 | \r |
173 | PicoDrawSetColorFormat(1);\r |
174 | PicoScanBegin = EmuScanBegin16;\r |
175 | \r |
176 | Pico.m.dirtyPal = 1;\r |
177 | PicoFrameDrawOnly();\r |
178 | \r |
179 | PicoOpt = po_old;\r |
180 | currentConfig.EmuOpt = eo_old;\r |
181 | }\r |
182 | \r |
183 | static void updateSound(int len)\r |
184 | {\r |
185 | len <<= 1;\r |
186 | if (PicoOpt & POPT_EN_STEREO)\r |
187 | len <<= 1;\r |
188 | \r |
189 | if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))\r |
190 | return;\r |
191 | \r |
192 | /* avoid writing audio when lagging behind to prevent audio lag */\r |
193 | if (PicoSkipFrame != 2)\r |
194 | sndout_oss_write(PsndOut, len);\r |
195 | }\r |
196 | \r |
197 | void pemu_sound_start(void)\r |
198 | {\r |
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199 | int target_fps = Pico.m.pal ? 50 : 60;\r |
200 | \r |
201 | PsndOut = NULL;\r |
202 | \r |
203 | if (currentConfig.EmuOpt & EOPT_EN_SOUND)\r |
204 | {\r |
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205 | int snd_excess_add, frame_samples;\r |
206 | int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;\r |
207 | \r |
208 | PsndRerate(Pico.m.frame_count ? 1 : 0);\r |
209 | \r |
210 | frame_samples = PsndLen;\r |
211 | snd_excess_add = ((PsndRate - PsndLen * target_fps)<<16) / target_fps;\r |
212 | if (snd_excess_add != 0)\r |
213 | frame_samples++;\r |
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214 | \r |
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215 | printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r |
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216 | PsndRate, PsndLen, snd_excess_add, is_stereo, Pico.m.pal);\r |
217 | sndout_oss_start(PsndRate, frame_samples, is_stereo);\r |
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218 | sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r |
219 | PicoWriteSound = updateSound;\r |
220 | plat_update_volume(0, 0);\r |
221 | memset(sndBuffer, 0, sizeof(sndBuffer));\r |
222 | PsndOut = sndBuffer;\r |
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223 | }\r |
224 | }\r |
225 | \r |
226 | void pemu_sound_stop(void)\r |
227 | {\r |
228 | }\r |
229 | \r |
230 | void pemu_sound_wait(void)\r |
231 | {\r |
232 | // don't need to do anything, writes will block by themselves\r |
233 | }\r |
234 | \r |
235 | void plat_debug_cat(char *str)\r |
236 | {\r |
237 | }\r |
238 | \r |
239 | void emu_video_mode_change(int start_line, int line_count, int is_32cols)\r |
240 | {\r |
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241 | // clear whole screen in all buffers\r |
242 | memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r |
243 | }\r |
244 | \r |
245 | void pemu_loop_prep(void)\r |
246 | {\r |
247 | PicoDrawSetColorFormat(1);\r |
248 | PicoScanBegin = EmuScanBegin16;\r |
249 | osd_text = osd_text16;\r |
250 | \r |
251 | pemu_sound_start();\r |
252 | }\r |
253 | \r |
254 | void pemu_loop_end(void)\r |
255 | {\r |
256 | int po_old = PicoOpt;\r |
257 | int eo_old = currentConfig.EmuOpt;\r |
258 | \r |
259 | pemu_sound_stop();\r |
260 | memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r |
261 | \r |
262 | /* do one more frame for menu bg */\r |
263 | PicoOpt &= ~POPT_ALT_RENDERER;\r |
264 | PicoOpt |= POPT_EN_SOFTSCALE|POPT_ACC_SPRITES;\r |
265 | currentConfig.EmuOpt |= EOPT_16BPP;\r |
266 | \r |
267 | PicoDrawSetColorFormat(1);\r |
268 | Pico.m.dirtyPal = 1;\r |
269 | PicoFrame();\r |
270 | \r |
271 | PicoOpt = po_old;\r |
272 | currentConfig.EmuOpt = eo_old;\r |
273 | }\r |
274 | \r |
275 | void plat_wait_till_us(unsigned int us_to)\r |
276 | {\r |
277 | unsigned int now;\r |
278 | \r |
279 | now = plat_get_ticks_us();\r |
280 | \r |
281 | while ((signed int)(us_to - now) > 512)\r |
282 | {\r |
283 | usleep(1024);\r |
284 | now = plat_get_ticks_us();\r |
285 | }\r |
286 | }\r |
287 | \r |
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288 | const char *plat_get_credits(void)\r |
289 | {\r |
290 | return "PicoDrive v" VERSION " (c) notaz, 2006-2009\n\n\n"\r |
291 | "Credits:\n"\r |
292 | "fDave: Cyclone 68000 core,\n"\r |
293 | " base code of PicoDrive\n"\r |
294 | "Reesy & FluBBa: DrZ80 core\n"\r |
295 | "MAME devs: YM2612 and SN76496 cores\n"\r |
296 | "rlyeh and others: minimal SDK\n"\r |
297 | "Squidge: mmuhack\n"\r |
298 | "Dzz: ARM940 sample\n"\r |
299 | "GnoStiC / Puck2099: USB joy code\n"\r |
300 | "craigix: GP2X hardware\n"\r |
301 | "ketchupgun: skin design\n"\r |
302 | "\n"\r |
303 | "special thanks (for docs, ideas):\n"\r |
304 | " Charles MacDonald, Haze,\n"\r |
305 | " Stephane Dallongeville,\n"\r |
306 | " Lordus, Exophase, Rokas,\n"\r |
307 | " Nemesis, Tasco Deluxe";\r |
308 | }\r |