| 1 | /* |
| 2 | * (C) notaz, 2012 |
| 3 | * |
| 4 | * This work is licensed under the terms of the GNU GPLv2 or later. |
| 5 | * See the COPYING file in the top-level directory. |
| 6 | */ |
| 7 | |
| 8 | #include <stdio.h> |
| 9 | #include <stdlib.h> |
| 10 | #include <string.h> |
| 11 | |
| 12 | #include "../libpcsxcore/misc.h" |
| 13 | #include "../libpcsxcore/psxcounters.h" |
| 14 | #include "../libpcsxcore/psxmem_map.h" |
| 15 | #include "../libpcsxcore/new_dynarec/new_dynarec.h" |
| 16 | #include "../libpcsxcore/cheat.h" |
| 17 | #include "../plugins/dfsound/out.h" |
| 18 | #include "cspace.h" |
| 19 | #include "main.h" |
| 20 | #include "plugin.h" |
| 21 | #include "plugin_lib.h" |
| 22 | #include "revision.h" |
| 23 | #include "libretro.h" |
| 24 | |
| 25 | static retro_video_refresh_t video_cb; |
| 26 | static retro_input_poll_t input_poll_cb; |
| 27 | static retro_input_state_t input_state_cb; |
| 28 | static retro_environment_t environ_cb; |
| 29 | static retro_audio_sample_batch_t audio_batch_cb; |
| 30 | |
| 31 | static void *vout_buf; |
| 32 | static int vout_width, vout_height; |
| 33 | static int vout_doffs_old, vout_fb_dirty; |
| 34 | static bool vout_can_dupe; |
| 35 | |
| 36 | static int samples_sent, samples_to_send; |
| 37 | static int plugins_opened; |
| 38 | static int is_pal_mode; |
| 39 | |
| 40 | /* memory card data */ |
| 41 | extern char Mcd1Data[MCD_SIZE]; |
| 42 | extern char McdDisable[2]; |
| 43 | |
| 44 | /* PCSX ReARMed core calls and stuff */ |
| 45 | int in_type1, in_type2; |
| 46 | int in_a1[2] = { 127, 127 }, in_a2[2] = { 127, 127 }; |
| 47 | int in_keystate; |
| 48 | int in_enable_vibration; |
| 49 | |
| 50 | static void init_memcard(char *mcd_data) |
| 51 | { |
| 52 | unsigned off = 0; |
| 53 | unsigned i; |
| 54 | |
| 55 | memset(mcd_data, 0, MCD_SIZE); |
| 56 | |
| 57 | mcd_data[off++] = 'M'; |
| 58 | mcd_data[off++] = 'C'; |
| 59 | off += 0x7d; |
| 60 | mcd_data[off++] = 0x0e; |
| 61 | |
| 62 | for (i = 0; i < 15; i++) { |
| 63 | mcd_data[off++] = 0xa0; |
| 64 | off += 0x07; |
| 65 | mcd_data[off++] = 0xff; |
| 66 | mcd_data[off++] = 0xff; |
| 67 | off += 0x75; |
| 68 | mcd_data[off++] = 0xa0; |
| 69 | } |
| 70 | |
| 71 | for (i = 0; i < 20; i++) { |
| 72 | mcd_data[off++] = 0xff; |
| 73 | mcd_data[off++] = 0xff; |
| 74 | mcd_data[off++] = 0xff; |
| 75 | mcd_data[off++] = 0xff; |
| 76 | off += 0x04; |
| 77 | mcd_data[off++] = 0xff; |
| 78 | mcd_data[off++] = 0xff; |
| 79 | off += 0x76; |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | static int vout_open(void) |
| 84 | { |
| 85 | return 0; |
| 86 | } |
| 87 | |
| 88 | static void vout_set_mode(int w, int h, int raw_w, int raw_h, int bpp) |
| 89 | { |
| 90 | vout_width = w; |
| 91 | vout_height = h; |
| 92 | } |
| 93 | |
| 94 | #ifndef FRONTEND_SUPPORTS_RGB565 |
| 95 | static void convert(void *buf, size_t bytes) |
| 96 | { |
| 97 | unsigned int i, v, *p = buf; |
| 98 | |
| 99 | for (i = 0; i < bytes / 4; i++) { |
| 100 | v = p[i]; |
| 101 | p[i] = (v & 0x001f001f) | ((v >> 1) & 0x7fe07fe0); |
| 102 | } |
| 103 | } |
| 104 | #endif |
| 105 | |
| 106 | static void vout_flip(const void *vram, int stride, int bgr24, int w, int h) |
| 107 | { |
| 108 | unsigned short *dest = vout_buf; |
| 109 | const unsigned short *src = vram; |
| 110 | int dstride = vout_width, h1 = h; |
| 111 | int doffs; |
| 112 | |
| 113 | if (vram == NULL) { |
| 114 | // blanking |
| 115 | memset(vout_buf, 0, dstride * h * 2); |
| 116 | goto out; |
| 117 | } |
| 118 | |
| 119 | doffs = (vout_height - h) * dstride; |
| 120 | doffs += (dstride - w) / 2 & ~1; |
| 121 | if (doffs != vout_doffs_old) { |
| 122 | // clear borders |
| 123 | memset(vout_buf, 0, dstride * h * 2); |
| 124 | vout_doffs_old = doffs; |
| 125 | } |
| 126 | dest += doffs; |
| 127 | |
| 128 | if (bgr24) |
| 129 | { |
| 130 | // XXX: could we switch to RETRO_PIXEL_FORMAT_XRGB8888 here? |
| 131 | for (; h1-- > 0; dest += dstride, src += stride) |
| 132 | { |
| 133 | bgr888_to_rgb565(dest, src, w * 3); |
| 134 | } |
| 135 | } |
| 136 | else |
| 137 | { |
| 138 | for (; h1-- > 0; dest += dstride, src += stride) |
| 139 | { |
| 140 | bgr555_to_rgb565(dest, src, w * 2); |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | out: |
| 145 | #ifndef FRONTEND_SUPPORTS_RGB565 |
| 146 | convert(vout_buf, vout_width * vout_height * 2); |
| 147 | #endif |
| 148 | vout_fb_dirty = 1; |
| 149 | pl_rearmed_cbs.flip_cnt++; |
| 150 | } |
| 151 | |
| 152 | static void vout_close(void) |
| 153 | { |
| 154 | } |
| 155 | |
| 156 | static void *pl_mmap(unsigned int size) |
| 157 | { |
| 158 | return psxMap(0, size, 0, MAP_TAG_VRAM); |
| 159 | } |
| 160 | |
| 161 | static void pl_munmap(void *ptr, unsigned int size) |
| 162 | { |
| 163 | psxUnmap(ptr, size, MAP_TAG_VRAM); |
| 164 | } |
| 165 | |
| 166 | struct rearmed_cbs pl_rearmed_cbs = { |
| 167 | .pl_vout_open = vout_open, |
| 168 | .pl_vout_set_mode = vout_set_mode, |
| 169 | .pl_vout_flip = vout_flip, |
| 170 | .pl_vout_close = vout_close, |
| 171 | .mmap = pl_mmap, |
| 172 | .munmap = pl_munmap, |
| 173 | /* from psxcounters */ |
| 174 | .gpu_hcnt = &hSyncCount, |
| 175 | .gpu_frame_count = &frame_counter, |
| 176 | }; |
| 177 | |
| 178 | void pl_frame_limit(void) |
| 179 | { |
| 180 | /* called once per frame, make psxCpu->Execute() above return */ |
| 181 | stop = 1; |
| 182 | } |
| 183 | |
| 184 | void pl_timing_prepare(int is_pal) |
| 185 | { |
| 186 | is_pal_mode = is_pal; |
| 187 | } |
| 188 | |
| 189 | void plat_trigger_vibrate(int is_strong) |
| 190 | { |
| 191 | } |
| 192 | |
| 193 | void pl_update_gun(int *xn, int *yn, int *xres, int *yres, int *in) |
| 194 | { |
| 195 | } |
| 196 | |
| 197 | /* sound calls */ |
| 198 | static int snd_init(void) |
| 199 | { |
| 200 | return 0; |
| 201 | } |
| 202 | |
| 203 | static void snd_finish(void) |
| 204 | { |
| 205 | } |
| 206 | |
| 207 | static int snd_busy(void) |
| 208 | { |
| 209 | if (samples_to_send > samples_sent) |
| 210 | return 0; /* give more samples */ |
| 211 | else |
| 212 | return 1; |
| 213 | } |
| 214 | |
| 215 | static void snd_feed(void *buf, int bytes) |
| 216 | { |
| 217 | audio_batch_cb(buf, bytes / 4); |
| 218 | samples_sent += bytes / 4; |
| 219 | } |
| 220 | |
| 221 | void out_register_libretro(struct out_driver *drv) |
| 222 | { |
| 223 | drv->name = "libretro"; |
| 224 | drv->init = snd_init; |
| 225 | drv->finish = snd_finish; |
| 226 | drv->busy = snd_busy; |
| 227 | drv->feed = snd_feed; |
| 228 | } |
| 229 | |
| 230 | /* libretro */ |
| 231 | void retro_set_environment(retro_environment_t cb) { environ_cb = cb; } |
| 232 | void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; } |
| 233 | void retro_set_audio_sample(retro_audio_sample_t cb) { (void)cb; } |
| 234 | void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb) { audio_batch_cb = cb; } |
| 235 | void retro_set_input_poll(retro_input_poll_t cb) { input_poll_cb = cb; } |
| 236 | void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; } |
| 237 | |
| 238 | unsigned retro_api_version(void) |
| 239 | { |
| 240 | return RETRO_API_VERSION; |
| 241 | } |
| 242 | |
| 243 | void retro_set_controller_port_device(unsigned port, unsigned device) |
| 244 | { |
| 245 | } |
| 246 | |
| 247 | void retro_get_system_info(struct retro_system_info *info) |
| 248 | { |
| 249 | memset(info, 0, sizeof(*info)); |
| 250 | info->library_name = "PCSX-ReARMed"; |
| 251 | info->library_version = REV; |
| 252 | info->valid_extensions = "bin|cue|img|mdf|pbp|cbn"; |
| 253 | info->need_fullpath = true; |
| 254 | } |
| 255 | |
| 256 | void retro_get_system_av_info(struct retro_system_av_info *info) |
| 257 | { |
| 258 | memset(info, 0, sizeof(*info)); |
| 259 | info->timing.fps = is_pal_mode ? 50 : 60; |
| 260 | info->timing.sample_rate = 44100; |
| 261 | info->geometry.base_width = 320; |
| 262 | info->geometry.base_height = 240; |
| 263 | info->geometry.max_width = 640; |
| 264 | info->geometry.max_height = 512; |
| 265 | info->geometry.aspect_ratio = 4.0 / 3.0; |
| 266 | } |
| 267 | |
| 268 | /* savestates */ |
| 269 | size_t retro_serialize_size(void) |
| 270 | { |
| 271 | // it's currently 4380651 bytes, but have some reserved for future |
| 272 | return 0x430000; |
| 273 | } |
| 274 | |
| 275 | struct save_fp { |
| 276 | char *buf; |
| 277 | size_t pos; |
| 278 | int is_write; |
| 279 | }; |
| 280 | |
| 281 | static void *save_open(const char *name, const char *mode) |
| 282 | { |
| 283 | struct save_fp *fp; |
| 284 | |
| 285 | if (name == NULL || mode == NULL) |
| 286 | return NULL; |
| 287 | |
| 288 | fp = malloc(sizeof(*fp)); |
| 289 | if (fp == NULL) |
| 290 | return NULL; |
| 291 | |
| 292 | fp->buf = (char *)name; |
| 293 | fp->pos = 0; |
| 294 | fp->is_write = (mode[0] == 'w' || mode[1] == 'w'); |
| 295 | |
| 296 | return fp; |
| 297 | } |
| 298 | |
| 299 | static int save_read(void *file, void *buf, u32 len) |
| 300 | { |
| 301 | struct save_fp *fp = file; |
| 302 | if (fp == NULL || buf == NULL) |
| 303 | return -1; |
| 304 | |
| 305 | memcpy(buf, fp->buf + fp->pos, len); |
| 306 | fp->pos += len; |
| 307 | return len; |
| 308 | } |
| 309 | |
| 310 | static int save_write(void *file, const void *buf, u32 len) |
| 311 | { |
| 312 | struct save_fp *fp = file; |
| 313 | if (fp == NULL || buf == NULL) |
| 314 | return -1; |
| 315 | |
| 316 | memcpy(fp->buf + fp->pos, buf, len); |
| 317 | fp->pos += len; |
| 318 | return len; |
| 319 | } |
| 320 | |
| 321 | static long save_seek(void *file, long offs, int whence) |
| 322 | { |
| 323 | struct save_fp *fp = file; |
| 324 | if (fp == NULL) |
| 325 | return -1; |
| 326 | |
| 327 | switch (whence) { |
| 328 | case SEEK_CUR: |
| 329 | fp->pos += offs; |
| 330 | return fp->pos; |
| 331 | case SEEK_SET: |
| 332 | fp->pos = offs; |
| 333 | return fp->pos; |
| 334 | default: |
| 335 | return -1; |
| 336 | } |
| 337 | } |
| 338 | |
| 339 | static void save_close(void *file) |
| 340 | { |
| 341 | struct save_fp *fp = file; |
| 342 | size_t r_size = retro_serialize_size(); |
| 343 | if (fp == NULL) |
| 344 | return; |
| 345 | |
| 346 | if (fp->pos > r_size) |
| 347 | SysPrintf("ERROR: save buffer overflow detected\n"); |
| 348 | else if (fp->is_write && fp->pos < r_size) |
| 349 | // make sure we don't save trash in leftover space |
| 350 | memset(fp->buf + fp->pos, 0, r_size - fp->pos); |
| 351 | free(fp); |
| 352 | } |
| 353 | |
| 354 | bool retro_serialize(void *data, size_t size) |
| 355 | { |
| 356 | int ret = SaveState(data); |
| 357 | return ret == 0 ? true : false; |
| 358 | } |
| 359 | |
| 360 | bool retro_unserialize(const void *data, size_t size) |
| 361 | { |
| 362 | int ret = LoadState(data); |
| 363 | return ret == 0 ? true : false; |
| 364 | } |
| 365 | |
| 366 | void retro_cheat_reset(void) |
| 367 | { |
| 368 | ClearAllCheats(); |
| 369 | } |
| 370 | |
| 371 | void retro_cheat_set(unsigned index, bool enabled, const char *code) |
| 372 | { |
| 373 | char buf[256]; |
| 374 | int ret; |
| 375 | |
| 376 | // cheat funcs are destructive, need a copy.. |
| 377 | strncpy(buf, code, sizeof(buf)); |
| 378 | buf[sizeof(buf) - 1] = 0; |
| 379 | |
| 380 | if (index < NumCheats) |
| 381 | ret = EditCheat(index, "", buf); |
| 382 | else |
| 383 | ret = AddCheat("", buf); |
| 384 | |
| 385 | if (ret != 0) |
| 386 | SysPrintf("Failed to set cheat %#u\n", index); |
| 387 | else if (index < NumCheats) |
| 388 | Cheats[index].Enabled = enabled; |
| 389 | } |
| 390 | |
| 391 | bool retro_load_game(const struct retro_game_info *info) |
| 392 | { |
| 393 | #ifdef FRONTEND_SUPPORTS_RGB565 |
| 394 | enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565; |
| 395 | if (environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) { |
| 396 | SysPrintf("RGB565 supported, using it\n"); |
| 397 | } |
| 398 | #endif |
| 399 | |
| 400 | if (plugins_opened) { |
| 401 | ClosePlugins(); |
| 402 | plugins_opened = 0; |
| 403 | } |
| 404 | |
| 405 | set_cd_image(info->path); |
| 406 | |
| 407 | /* have to reload after set_cd_image for correct cdr plugin */ |
| 408 | if (LoadPlugins() == -1) { |
| 409 | SysPrintf("failed to load plugins\n"); |
| 410 | return false; |
| 411 | } |
| 412 | |
| 413 | plugins_opened = 1; |
| 414 | NetOpened = 0; |
| 415 | |
| 416 | if (OpenPlugins() == -1) { |
| 417 | SysPrintf("failed to open plugins\n"); |
| 418 | return false; |
| 419 | } |
| 420 | |
| 421 | plugin_call_rearmed_cbs(); |
| 422 | |
| 423 | Config.PsxAuto = 1; |
| 424 | if (CheckCdrom() == -1) { |
| 425 | SysPrintf("unsupported/invalid CD image: %s\n", info->path); |
| 426 | return false; |
| 427 | } |
| 428 | |
| 429 | SysReset(); |
| 430 | |
| 431 | if (LoadCdrom() == -1) { |
| 432 | SysPrintf("could not load CD-ROM!\n"); |
| 433 | return false; |
| 434 | } |
| 435 | emu_on_new_cd(0); |
| 436 | |
| 437 | return true; |
| 438 | } |
| 439 | |
| 440 | bool retro_load_game_special(unsigned game_type, const struct retro_game_info *info, size_t num_info) |
| 441 | { |
| 442 | return false; |
| 443 | } |
| 444 | |
| 445 | void retro_unload_game(void) |
| 446 | { |
| 447 | } |
| 448 | |
| 449 | unsigned retro_get_region(void) |
| 450 | { |
| 451 | return is_pal_mode ? RETRO_REGION_PAL : RETRO_REGION_NTSC; |
| 452 | } |
| 453 | |
| 454 | void *retro_get_memory_data(unsigned id) |
| 455 | { |
| 456 | return Mcd1Data; |
| 457 | } |
| 458 | |
| 459 | size_t retro_get_memory_size(unsigned id) |
| 460 | { |
| 461 | return MCD_SIZE; |
| 462 | } |
| 463 | |
| 464 | void retro_reset(void) |
| 465 | { |
| 466 | SysReset(); |
| 467 | } |
| 468 | |
| 469 | static const unsigned short retro_psx_map[] = { |
| 470 | [RETRO_DEVICE_ID_JOYPAD_B] = 1 << DKEY_CROSS, |
| 471 | [RETRO_DEVICE_ID_JOYPAD_Y] = 1 << DKEY_SQUARE, |
| 472 | [RETRO_DEVICE_ID_JOYPAD_SELECT] = 1 << DKEY_SELECT, |
| 473 | [RETRO_DEVICE_ID_JOYPAD_START] = 1 << DKEY_START, |
| 474 | [RETRO_DEVICE_ID_JOYPAD_UP] = 1 << DKEY_UP, |
| 475 | [RETRO_DEVICE_ID_JOYPAD_DOWN] = 1 << DKEY_DOWN, |
| 476 | [RETRO_DEVICE_ID_JOYPAD_LEFT] = 1 << DKEY_LEFT, |
| 477 | [RETRO_DEVICE_ID_JOYPAD_RIGHT] = 1 << DKEY_RIGHT, |
| 478 | [RETRO_DEVICE_ID_JOYPAD_A] = 1 << DKEY_CIRCLE, |
| 479 | [RETRO_DEVICE_ID_JOYPAD_X] = 1 << DKEY_TRIANGLE, |
| 480 | [RETRO_DEVICE_ID_JOYPAD_L] = 1 << DKEY_L1, |
| 481 | [RETRO_DEVICE_ID_JOYPAD_R] = 1 << DKEY_R1, |
| 482 | [RETRO_DEVICE_ID_JOYPAD_L2] = 1 << DKEY_L2, |
| 483 | [RETRO_DEVICE_ID_JOYPAD_R2] = 1 << DKEY_R2, |
| 484 | [RETRO_DEVICE_ID_JOYPAD_L3] = 1 << DKEY_L3, |
| 485 | [RETRO_DEVICE_ID_JOYPAD_R3] = 1 << DKEY_R3, |
| 486 | }; |
| 487 | #define RETRO_PSX_MAP_LEN (sizeof(retro_psx_map) / sizeof(retro_psx_map[0])) |
| 488 | |
| 489 | void retro_run(void) |
| 490 | { |
| 491 | int i; |
| 492 | |
| 493 | input_poll_cb(); |
| 494 | in_keystate = 0; |
| 495 | for (i = 0; i < RETRO_PSX_MAP_LEN; i++) |
| 496 | if (input_state_cb(1, RETRO_DEVICE_JOYPAD, 0, i)) |
| 497 | in_keystate |= retro_psx_map[i]; |
| 498 | in_keystate <<= 16; |
| 499 | for (i = 0; i < RETRO_PSX_MAP_LEN; i++) |
| 500 | if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, i)) |
| 501 | in_keystate |= retro_psx_map[i]; |
| 502 | |
| 503 | stop = 0; |
| 504 | psxCpu->Execute(); |
| 505 | |
| 506 | samples_to_send += is_pal_mode ? 44100 / 50 : 44100 / 60; |
| 507 | |
| 508 | video_cb((vout_fb_dirty || !vout_can_dupe) ? vout_buf : NULL, |
| 509 | vout_width, vout_height, vout_width * 2); |
| 510 | vout_fb_dirty = 0; |
| 511 | } |
| 512 | |
| 513 | void retro_init(void) |
| 514 | { |
| 515 | const char *bios[] = { "scph1001", "scph5501", "scph7001" }; |
| 516 | const char *dir; |
| 517 | char path[256]; |
| 518 | FILE *f = NULL; |
| 519 | int i, ret, level; |
| 520 | |
| 521 | ret = emu_core_preinit(); |
| 522 | ret |= emu_core_init(); |
| 523 | if (ret != 0) { |
| 524 | SysPrintf("PCSX init failed.\n"); |
| 525 | exit(1); |
| 526 | } |
| 527 | |
| 528 | vout_buf = malloc(640 * 512 * 2); |
| 529 | |
| 530 | if (environ_cb(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &dir) && dir) |
| 531 | { |
| 532 | snprintf(Config.BiosDir, sizeof(Config.BiosDir), "%s/", dir); |
| 533 | |
| 534 | for (i = 0; i < sizeof(bios) / sizeof(bios[0]); i++) { |
| 535 | snprintf(path, sizeof(path), "%s/%s.bin", dir, bios[i]); |
| 536 | f = fopen(path, "r"); |
| 537 | if (f != NULL) { |
| 538 | snprintf(Config.Bios, sizeof(Config.Bios), "%s.bin", bios[i]); |
| 539 | break; |
| 540 | } |
| 541 | } |
| 542 | } |
| 543 | if (f != NULL) { |
| 544 | SysPrintf("found BIOS file: %s\n", Config.Bios); |
| 545 | fclose(f); |
| 546 | } |
| 547 | else |
| 548 | SysPrintf("no BIOS files found.\n"); |
| 549 | |
| 550 | level = 1; |
| 551 | environ_cb(RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL, &level); |
| 552 | |
| 553 | environ_cb(RETRO_ENVIRONMENT_GET_CAN_DUPE, &vout_can_dupe); |
| 554 | |
| 555 | /* Set how much slower PSX CPU runs * 100 (so that 200 is 2 times) |
| 556 | * we have to do this because cache misses and some IO penalties |
| 557 | * are not emulated. Warning: changing this may break compatibility. */ |
| 558 | #ifdef __ARM_ARCH_7A__ |
| 559 | cycle_multiplier = 175; |
| 560 | #else |
| 561 | cycle_multiplier = 200; |
| 562 | #endif |
| 563 | |
| 564 | McdDisable[0] = 0; |
| 565 | McdDisable[1] = 1; |
| 566 | init_memcard(Mcd1Data); |
| 567 | |
| 568 | SaveFuncs.open = save_open; |
| 569 | SaveFuncs.read = save_read; |
| 570 | SaveFuncs.write = save_write; |
| 571 | SaveFuncs.seek = save_seek; |
| 572 | SaveFuncs.close = save_close; |
| 573 | } |
| 574 | |
| 575 | void retro_deinit(void) |
| 576 | { |
| 577 | SysClose(); |
| 578 | free(vout_buf); |
| 579 | vout_buf = NULL; |
| 580 | } |