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1 | // (c) Copyright 2006-2009 notaz, All rights reserved.\r |
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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 |
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7 | #include <unistd.h>\r |
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8 | \r |
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9 | #include "../common/emu.h"\r |
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10 | #include "../common/menu.h"\r |
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11 | #include "../common/plat.h"\r |
12 | #include "../common/arm_utils.h"\r |
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13 | #include "../linux/sndout_oss.h"\r |
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14 | #include "../linux/fbdev.h"\r |
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15 | #include "asm_utils.h"\r |
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16 | #include "version.h"\r |
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17 | \r |
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18 | #include <pico/pico_int.h>\r |
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19 | \r |
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20 | //#define USE_320_SCREEN 1\r |
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21 | \r |
22 | \r |
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23 | static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r |
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24 | static unsigned char temp_frame[g_screen_width * g_screen_height * 2];\r |
25 | unsigned char *PicoDraw2FB = temp_frame;\r |
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26 | char cpu_clk_name[] = "unused";\r |
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27 | \r |
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28 | \r |
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29 | void pemu_prep_defconfig(void)\r |
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30 | {\r |
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31 | // XXX: move elsewhere\r |
32 | g_menubg_ptr = temp_frame;\r |
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33 | \r |
34 | defaultConfig.EmuOpt |= EOPT_VSYNC;\r |
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35 | }\r |
36 | \r |
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37 | void pemu_validate_config(void)\r |
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38 | {\r |
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39 | }\r |
40 | \r |
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41 | // FIXME: cleanup\r |
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42 | static void osd_text(int x, int y, const char *text)\r |
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43 | {\r |
44 | int len = strlen(text)*8;\r |
45 | \r |
46 | if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r |
47 | int *p, i, h;\r |
48 | x &= ~3; // align x\r |
49 | len = (len+3) >> 2;\r |
50 | for (h = 0; h < 8; h++) {\r |
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51 | p = (int *) ((unsigned char *) g_screen_ptr+x+g_screen_width*(y+h));\r |
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52 | for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r |
53 | }\r |
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54 | emu_text_out8(x, y, text);\r |
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55 | } else {\r |
56 | int *p, i, h;\r |
57 | x &= ~1; // align x\r |
58 | len++;\r |
59 | for (h = 0; h < 16; h++) {\r |
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60 | p = (int *) ((unsigned short *) g_screen_ptr+x+g_screen_width*(y+h));\r |
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61 | for (i = len; i; i--, p++) *p = 0;//(*p>>2)&0x39e7;\r |
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62 | }\r |
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63 | text_out16(x, y, text);\r |
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64 | }\r |
65 | }\r |
66 | \r |
67 | static void draw_cd_leds(void)\r |
68 | {\r |
69 | // static\r |
70 | int old_reg;\r |
71 | // if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r |
72 | old_reg = Pico_mcd->s68k_regs[0];\r |
73 | \r |
74 | if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r |
75 | // 8-bit modes\r |
76 | unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r |
77 | unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r |
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78 | *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+ 4) =\r |
79 | *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+ 4) =\r |
80 | *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+ 4) = col_g;\r |
81 | *(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+12) =\r |
82 | *(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+12) =\r |
83 | *(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+12) = col_r;\r |
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84 | } else {\r |
85 | // 16-bit modes\r |
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86 | unsigned int *p = (unsigned int *)((short *)g_screen_ptr + g_screen_width*2+4);\r |
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87 | unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r |
88 | unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r |
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89 | *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;\r |
90 | *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;\r |
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91 | *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r |
92 | }\r |
93 | }\r |
94 | \r |
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95 | #ifdef USE_320_SCREEN\r |
96 | \r |
97 | static int EmuScanBegin16(unsigned int num)\r |
98 | {\r |
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99 | DrawLineDest = (unsigned short *)g_screen_ptr + num*800 + 800/2 - 320/2;\r |
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100 | //int w = (Pico.video.reg[12]&1) ? 320 : 256;\r |
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101 | //DrawLineDest = (unsigned short *)g_screen_ptr + num*w;\r |
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102 | \r |
103 | return 0;\r |
104 | }\r |
105 | \r |
106 | #else // USE_320_SCREEN\r |
107 | \r |
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108 | static int EmuScanEnd16(unsigned int num)\r |
109 | {\r |
110 | unsigned char *ps=HighCol+8;\r |
111 | unsigned short *pd;\r |
112 | unsigned short *pal=HighPal;\r |
113 | int sh = Pico.video.reg[0xC]&8;\r |
114 | int len, mask = 0xff;\r |
115 | \r |
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116 | pd=(unsigned short *)g_screen_ptr + num*800*2 + 800/2 - 320*2/2;\r |
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117 | \r |
118 | if (Pico.m.dirtyPal)\r |
119 | PicoDoHighPal555(sh);\r |
120 | \r |
121 | if (Pico.video.reg[12]&1) {\r |
122 | len = 320;\r |
123 | } else {\r |
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124 | pd += 32*2;\r |
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125 | len = 256;\r |
126 | }\r |
127 | \r |
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128 | if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))\r |
129 | mask=0x3f; // messed sprites, upper bits are priority stuff\r |
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130 | \r |
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131 | #if 1\r |
132 | clut_line(pd, ps, pal, (mask<<16) | len);\r |
133 | #else\r |
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134 | for (; len > 0; len--)\r |
135 | {\r |
136 | unsigned int p = pal[*ps++ & mask];\r |
137 | p |= p << 16;\r |
138 | *(unsigned int *)pd = p;\r |
139 | *(unsigned int *)(&pd[800]) = p;\r |
140 | pd += 2;\r |
141 | }\r |
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142 | #endif\r |
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143 | \r |
144 | return 0;\r |
145 | }\r |
146 | \r |
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147 | static int EmuScanEnd16_32x(unsigned int num)\r |
148 | {\r |
149 | unsigned int *ps;\r |
150 | unsigned int *pd;\r |
151 | int len;\r |
152 | \r |
153 | ps = (unsigned int *)temp_frame;\r |
154 | pd = (unsigned int *)g_screen_ptr + (num*800*2 + 800/2 - 320*2/2) / 2;\r |
155 | \r |
156 | for (len = 320/2; len > 0; len--, ps++) {\r |
157 | unsigned int p, p1;\r |
158 | p1 = *ps;\r |
159 | p = p1 << 16;\r |
160 | p |= p >> 16;\r |
161 | *pd = pd[800/2] = p;\r |
162 | pd++;\r |
163 | \r |
164 | p = p1 >> 16;\r |
165 | p |= p << 16;\r |
166 | *pd = pd[800/2] = p;\r |
167 | pd++;\r |
168 | }\r |
169 | \r |
170 | return 0;\r |
171 | }\r |
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172 | #endif // USE_320_SCREEN\r |
173 | \r |
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174 | void pemu_finalize_frame(const char *fps, const char *notice)\r |
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175 | {\r |
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176 | if (notice || (currentConfig.EmuOpt & EOPT_SHOW_FPS)) {\r |
177 | if (notice)\r |
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178 | osd_text(4, 464, notice);\r |
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179 | if (currentConfig.EmuOpt & EOPT_SHOW_FPS)\r |
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180 | osd_text(640, 464, fps);\r |
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181 | }\r |
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182 | if ((PicoAHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))\r |
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183 | draw_cd_leds();\r |
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184 | }\r |
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185 | \r |
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186 | void plat_video_toggle_renderer(int is_next, int force_16bpp, int is_menu)\r |
187 | {\r |
188 | // this will auto-select SMS/32X renderers\r |
189 | PicoDrawSetColorFormat(1);\r |
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190 | }\r |
191 | \r |
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192 | void plat_video_menu_enter(int is_rom_loaded)\r |
193 | {\r |
194 | }\r |
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195 | \r |
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196 | void plat_video_menu_begin(void)\r |
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197 | {\r |
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198 | memcpy32(g_screen_ptr, g_menubg_ptr, g_screen_width * g_screen_height * 2 / 4);\r |
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199 | }\r |
200 | \r |
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201 | void plat_video_menu_end(void)\r |
202 | {\r |
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203 | plat_video_flip();\r |
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204 | }\r |
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205 | \r |
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206 | void plat_status_msg_clear(void)\r |
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207 | {\r |
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208 | int s = g_screen_width * g_screen_height * 2;\r |
209 | int l = g_screen_width * 16 * 2;\r |
210 | int i;\r |
211 | \r |
212 | for (i = 0; i < fbdev_buffer_count; i++)\r |
213 | memset32((int *)((char *)fbdev_buffers[i] + s - l), 0, l / 4);\r |
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214 | }\r |
215 | \r |
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216 | void plat_status_msg_busy_next(const char *msg)\r |
217 | {\r |
218 | plat_status_msg_clear();\r |
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219 | pemu_finalize_frame("", msg);\r |
220 | plat_video_flip();\r |
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221 | emu_status_msg("");\r |
222 | reset_timing = 1;\r |
223 | }\r |
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224 | \r |
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225 | void plat_status_msg_busy_first(const char *msg)\r |
226 | {\r |
227 | // memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r |
228 | plat_status_msg_busy_next(msg);\r |
229 | }\r |
230 | \r |
231 | void plat_update_volume(int has_changed, int is_up)\r |
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232 | {\r |
233 | static int prev_frame = 0, wait_frames = 0;\r |
234 | int vol = currentConfig.volume;\r |
235 | \r |
236 | if (has_changed)\r |
237 | {\r |
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238 | if (is_up) {\r |
239 | if (vol < 99) vol++;\r |
240 | } else {\r |
241 | if (vol > 0) vol--;\r |
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242 | }\r |
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243 | wait_frames = 0;\r |
244 | sndout_oss_setvol(vol, vol);\r |
245 | currentConfig.volume = vol;\r |
246 | emu_status_msg("VOL: %02i", vol);\r |
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247 | prev_frame = Pico.m.frame_count;\r |
248 | }\r |
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249 | }\r |
250 | \r |
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251 | void pemu_forced_frame(int opts)\r |
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252 | {\r |
253 | int po_old = PicoOpt;\r |
254 | int eo_old = currentConfig.EmuOpt;\r |
255 | \r |
256 | PicoOpt &= ~0x10;\r |
257 | PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r |
258 | currentConfig.EmuOpt |= 0x80;\r |
259 | \r |
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260 | Pico.m.dirtyPal = 1;\r |
261 | PicoFrameDrawOnly();\r |
262 | \r |
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263 | PicoOpt = po_old;\r |
264 | currentConfig.EmuOpt = eo_old;\r |
265 | }\r |
266 | \r |
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267 | static void updateSound(int len)\r |
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268 | {\r |
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269 | unsigned int t;\r |
270 | \r |
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271 | len <<= 1;\r |
272 | if (PicoOpt & POPT_EN_STEREO)\r |
273 | len <<= 1;\r |
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274 | \r |
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275 | // sndout_oss_can_write() not reliable..\r |
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276 | if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))\r |
277 | return;\r |
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278 | \r |
697746df |
279 | /* avoid writing audio when lagging behind to prevent audio lag */\r |
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280 | if (PicoSkipFrame == 2)\r |
281 | return;\r |
282 | \r |
283 | t = plat_get_ticks_ms();\r |
284 | sndout_oss_write(PsndOut, len);\r |
285 | t = plat_get_ticks_ms() - t;\r |
286 | if (t > 1)\r |
287 | printf("audio lag %u\n", t);\r |
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288 | }\r |
289 | \r |
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290 | void pemu_sound_start(void)\r |
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291 | {\r |
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292 | int target_fps = Pico.m.pal ? 50 : 60;\r |
293 | \r |
294 | PsndOut = NULL;\r |
295 | \r |
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296 | if (currentConfig.EmuOpt & EOPT_EN_SOUND)\r |
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297 | {\r |
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298 | int snd_excess_add, frame_samples;\r |
299 | int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;\r |
300 | \r |
301 | PsndRerate(Pico.m.frame_count ? 1 : 0);\r |
302 | \r |
303 | frame_samples = PsndLen;\r |
304 | snd_excess_add = ((PsndRate - PsndLen * target_fps)<<16) / target_fps;\r |
305 | if (snd_excess_add != 0)\r |
306 | frame_samples++;\r |
b6820926 |
307 | \r |
b6820926 |
308 | printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r |
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309 | PsndRate, PsndLen, snd_excess_add, is_stereo, Pico.m.pal);\r |
310 | sndout_oss_start(PsndRate, frame_samples * 2, is_stereo);\r |
311 | //sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r |
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312 | PicoWriteSound = updateSound;\r |
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313 | plat_update_volume(0, 0);\r |
b6820926 |
314 | memset(sndBuffer, 0, sizeof(sndBuffer));\r |
315 | PsndOut = sndBuffer;\r |
b6820926 |
316 | }\r |
317 | }\r |
318 | \r |
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319 | void pemu_sound_stop(void)\r |
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320 | {\r |
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321 | sndout_oss_stop();\r |
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322 | }\r |
323 | \r |
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324 | void pemu_sound_wait(void)\r |
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325 | {\r |
326 | // don't need to do anything, writes will block by themselves\r |
327 | }\r |
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328 | \r |
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329 | void plat_debug_cat(char *str)\r |
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330 | {\r |
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331 | }\r |
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332 | \r |
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333 | void emu_video_mode_change(int start_line, int line_count, int is_32cols)\r |
334 | {\r |
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335 | int i;\r |
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336 | \r |
697746df |
337 | // clear whole screen in all buffers\r |
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338 | for (i = 0; i < fbdev_buffer_count; i++)\r |
339 | memset32(fbdev_buffers[i], 0, g_screen_width * g_screen_height * 2 / 4);\r |
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340 | \r |
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341 | #ifdef USE_320_SCREEN\r |
342 | PicoDrawSetColorFormat(1);\r |
343 | PicoScanBegin = EmuScanBegin16;\r |
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344 | #else\r |
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345 | if (PicoAHW & PAHW_32X) {\r |
346 | DrawLineDest = (unsigned short *)temp_frame;\r |
347 | PicoDrawSetColorFormat(1);\r |
348 | PicoScanBegin = NULL;\r |
349 | PicoScanEnd = EmuScanEnd16_32x;\r |
350 | } else {\r |
351 | PicoDrawSetColorFormat(-1);\r |
352 | PicoScanBegin = NULL;\r |
353 | PicoScanEnd = EmuScanEnd16;\r |
354 | }\r |
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355 | #endif\r |
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356 | }\r |
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357 | \r |
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358 | void pemu_loop_prep(void)\r |
359 | {\r |
360 | emu_video_mode_change(0, 0, 0);\r |
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361 | pemu_sound_start();\r |
362 | }\r |
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363 | \r |
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364 | void pemu_loop_end(void)\r |
365 | {\r |
366 | int po_old = PicoOpt;\r |
367 | int eo_old = currentConfig.EmuOpt;\r |
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368 | \r |
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369 | pemu_sound_stop();\r |
370 | memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r |
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371 | \r |
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372 | /* do one more frame for menu bg */\r |
373 | PicoOpt &= ~POPT_ALT_RENDERER;\r |
374 | PicoOpt |= POPT_EN_SOFTSCALE|POPT_ACC_SPRITES;\r |
375 | currentConfig.EmuOpt |= EOPT_16BPP;\r |
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376 | \r |
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377 | PicoDrawSetColorFormat(1);\r |
378 | Pico.m.dirtyPal = 1;\r |
379 | PicoFrame();\r |
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380 | \r |
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381 | PicoOpt = po_old;\r |
382 | currentConfig.EmuOpt = eo_old;\r |
383 | }\r |
e55f0cbb |
384 | \r |
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385 | void plat_wait_till_us(unsigned int us_to)\r |
386 | {\r |
387 | unsigned int now;\r |
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388 | signed int diff;\r |
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389 | \r |
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390 | now = plat_get_ticks_us();\r |
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391 | \r |
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392 | // XXX: need to check NOHZ and djw kernel\r |
393 | diff = (signed int)(us_to - now);\r |
394 | if (diff > 10000) {\r |
395 | //printf("sleep %d\n", us_to - now);\r |
396 | usleep(diff * 15 / 16);\r |
397 | now = plat_get_ticks_us();\r |
398 | //printf(" wake %d\n", (signed)(us_to - now));\r |
399 | }\r |
400 | /*\r |
401 | while ((signed int)(us_to - now) > 512) {\r |
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402 | spend_cycles(1024);\r |
403 | now = plat_get_ticks_us();\r |
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404 | }\r |
d08e7326 |
405 | */\r |
e55f0cbb |
406 | }\r |
407 | \r |
697746df |
408 | const char *plat_get_credits(void)\r |
409 | {\r |
410 | return "PicoDrive v" VERSION " (c) notaz, 2006-2009\n\n\n"\r |
411 | "Credits:\n"\r |
412 | "fDave: Cyclone 68000 core,\n"\r |
413 | " base code of PicoDrive\n"\r |
414 | "Reesy & FluBBa: DrZ80 core\n"\r |
415 | "MAME devs: YM2612 and SN76496 cores\n"\r |
416 | "rlyeh and others: minimal SDK\n"\r |
417 | "Squidge: mmuhack\n"\r |
418 | "Dzz: ARM940 sample\n"\r |
419 | "GnoStiC / Puck2099: USB joy code\n"\r |
420 | "craigix: GP2X hardware\n"\r |
421 | "ketchupgun: skin design\n"\r |
422 | "\n"\r |
423 | "special thanks (for docs, ideas):\n"\r |
424 | " Charles MacDonald, Haze,\n"\r |
425 | " Stephane Dallongeville,\n"\r |
426 | " Lordus, Exophase, Rokas,\n"\r |
427 | " Nemesis, Tasco Deluxe";\r |
428 | }\r |