| 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 |
| 21 | static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r |
| 22 | static unsigned char temp_frame[g_screen_width * g_screen_height * 2];\r |
| 23 | unsigned char *PicoDraw2FB = temp_frame;\r |
| 24 | const char *renderer_names[] = { NULL };\r |
| 25 | const char *renderer_names32x[] = { NULL };\r |
| 26 | char cpu_clk_name[] = "Max CPU clock";\r |
| 27 | \r |
| 28 | enum {\r |
| 29 | SCALE_1x1,\r |
| 30 | SCALE_2x2_3x2,\r |
| 31 | SCALE_2x2_2x2,\r |
| 32 | };\r |
| 33 | \r |
| 34 | static 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 |
| 46 | void 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 |
| 55 | void pemu_validate_config(void)\r |
| 56 | {\r |
| 57 | currentConfig.CPUclock = get_cpu_clock();\r |
| 58 | }\r |
| 59 | \r |
| 60 | // FIXME: cleanup\r |
| 61 | static 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 |
| 86 | static 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 |
| 114 | static 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 |
| 124 | static 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 |
| 144 | MAKE_EMUSCAN(emuscan_2x2_40, 2x2, 800/2 - 320*2/2, 320)\r |
| 145 | MAKE_EMUSCAN(emuscan_2x2_32, 2x2, 800/2 - 256*2/2, 256)\r |
| 146 | MAKE_EMUSCAN(emuscan_3x2_32, 3x2, 800/2 - 256*3/2, 256)\r |
| 147 | \r |
| 148 | #if 0 /* FIXME */\r |
| 149 | static 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 |
| 176 | void 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 |
| 188 | void 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 |
| 194 | void plat_video_menu_enter(int is_rom_loaded)\r |
| 195 | {\r |
| 196 | }\r |
| 197 | \r |
| 198 | void 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 |
| 203 | void plat_video_menu_end(void)\r |
| 204 | {\r |
| 205 | plat_video_flip();\r |
| 206 | }\r |
| 207 | \r |
| 208 | void 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 |
| 218 | void 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 |
| 227 | void 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 |
| 233 | void 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 |
| 253 | void 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 |
| 266 | static 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 |
| 289 | void 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 |
| 318 | void pemu_sound_stop(void)\r |
| 319 | {\r |
| 320 | sndout_oss_stop();\r |
| 321 | }\r |
| 322 | \r |
| 323 | void pemu_sound_wait(void)\r |
| 324 | {\r |
| 325 | // don't need to do anything, writes will block by themselves\r |
| 326 | }\r |
| 327 | \r |
| 328 | void plat_debug_cat(char *str)\r |
| 329 | {\r |
| 330 | }\r |
| 331 | \r |
| 332 | void 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 |
| 369 | void 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 |
| 384 | void 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 |
| 405 | void 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 |
| 428 | const 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 |