| 1 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 2 | * Mupen64plus - rom.c * |
| 3 | * Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ * |
| 4 | * Copyright (C) 2008 Tillin9 * |
| 5 | * Copyright (C) 2002 Hacktarux * |
| 6 | * * |
| 7 | * This program is free software; you can redistribute it and/or modify * |
| 8 | * it under the terms of the GNU General Public License as published by * |
| 9 | * the Free Software Foundation; either version 2 of the License, or * |
| 10 | * (at your option) any later version. * |
| 11 | * * |
| 12 | * This program is distributed in the hope that it will be useful, * |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| 15 | * GNU General Public License for more details. * |
| 16 | * * |
| 17 | * You should have received a copy of the GNU General Public License * |
| 18 | * along with this program; if not, write to the * |
| 19 | * Free Software Foundation, Inc., * |
| 20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * |
| 21 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
| 22 | |
| 23 | #include <stdio.h> |
| 24 | #include <stdlib.h> |
| 25 | #include <string.h> |
| 26 | #include <ctype.h> |
| 27 | |
| 28 | #define M64P_CORE_PROTOTYPES 1 |
| 29 | #include "api/m64p_types.h" |
| 30 | #include "api/callbacks.h" |
| 31 | #include "api/config.h" |
| 32 | #include "api/m64p_config.h" |
| 33 | |
| 34 | #include "md5.h" |
| 35 | #include "rom.h" |
| 36 | #include "main.h" |
| 37 | #include "util.h" |
| 38 | |
| 39 | #include "memory/memory.h" |
| 40 | #include "osal/preproc.h" |
| 41 | #include "osd/osd.h" |
| 42 | |
| 43 | #define DEFAULT 16 |
| 44 | |
| 45 | #define CHUNKSIZE 1024*128 /* Read files 128KB at a time. */ |
| 46 | |
| 47 | static romdatabase_entry* ini_search_by_md5(md5_byte_t* md5); |
| 48 | |
| 49 | static _romdatabase g_romdatabase; |
| 50 | |
| 51 | /* Global loaded rom memory space. */ |
| 52 | unsigned char* rom = NULL; |
| 53 | /* Global loaded rom size. */ |
| 54 | int rom_size = 0; |
| 55 | |
| 56 | unsigned char isGoldeneyeRom = 0; |
| 57 | |
| 58 | m64p_rom_header ROM_HEADER; |
| 59 | rom_params ROM_PARAMS; |
| 60 | m64p_rom_settings ROM_SETTINGS; |
| 61 | |
| 62 | static m64p_system_type rom_country_code_to_system_type(unsigned short country_code); |
| 63 | static int rom_system_type_to_ai_dac_rate(m64p_system_type system_type); |
| 64 | static int rom_system_type_to_vi_limit(m64p_system_type system_type); |
| 65 | |
| 66 | /* Tests if a file is a valid N64 rom by checking the first 4 bytes. */ |
| 67 | static int is_valid_rom(const unsigned char *buffer) |
| 68 | { |
| 69 | /* Test if rom is a native .z64 image with header 0x80371240. [ABCD] */ |
| 70 | if((buffer[0]==0x80)&&(buffer[1]==0x37)&&(buffer[2]==0x12)&&(buffer[3]==0x40)) |
| 71 | return 1; |
| 72 | /* Test if rom is a byteswapped .v64 image with header 0x37804012. [BADC] */ |
| 73 | else if((buffer[0]==0x37)&&(buffer[1]==0x80)&&(buffer[2]==0x40)&&(buffer[3]==0x12)) |
| 74 | return 1; |
| 75 | /* Test if rom is a wordswapped .n64 image with header 0x40123780. [DCBA] */ |
| 76 | else if((buffer[0]==0x40)&&(buffer[1]==0x12)&&(buffer[2]==0x37)&&(buffer[3]==0x80)) |
| 77 | return 1; |
| 78 | else |
| 79 | return 0; |
| 80 | } |
| 81 | |
| 82 | /* If rom is a .v64 or .n64 image, byteswap or wordswap loadlength amount of |
| 83 | * rom data to native .z64 before forwarding. Makes sure that data extraction |
| 84 | * and MD5ing routines always deal with a .z64 image. |
| 85 | */ |
| 86 | static void swap_rom(unsigned char* localrom, unsigned char* imagetype, int loadlength) |
| 87 | { |
| 88 | unsigned char temp; |
| 89 | int i; |
| 90 | |
| 91 | /* Btyeswap if .v64 image. */ |
| 92 | if(localrom[0]==0x37) |
| 93 | { |
| 94 | *imagetype = V64IMAGE; |
| 95 | for (i = 0; i < loadlength; i+=2) |
| 96 | { |
| 97 | temp=localrom[i]; |
| 98 | localrom[i]=localrom[i+1]; |
| 99 | localrom[i+1]=temp; |
| 100 | } |
| 101 | } |
| 102 | /* Wordswap if .n64 image. */ |
| 103 | else if(localrom[0]==0x40) |
| 104 | { |
| 105 | *imagetype = N64IMAGE; |
| 106 | for (i = 0; i < loadlength; i+=4) |
| 107 | { |
| 108 | temp=localrom[i]; |
| 109 | localrom[i]=localrom[i+3]; |
| 110 | localrom[i+3]=temp; |
| 111 | temp=localrom[i+1]; |
| 112 | localrom[i+1]=localrom[i+2]; |
| 113 | localrom[i+2]=temp; |
| 114 | } |
| 115 | } |
| 116 | else |
| 117 | *imagetype = Z64IMAGE; |
| 118 | } |
| 119 | |
| 120 | m64p_error open_rom(const unsigned char* romimage, unsigned int size) |
| 121 | { |
| 122 | md5_state_t state; |
| 123 | md5_byte_t digest[16]; |
| 124 | romdatabase_entry* entry; |
| 125 | char buffer[256]; |
| 126 | unsigned char imagetype; |
| 127 | int i; |
| 128 | |
| 129 | /* check input requirements */ |
| 130 | if (rom != NULL) |
| 131 | { |
| 132 | DebugMessage(M64MSG_ERROR, "open_rom(): previous ROM image was not freed"); |
| 133 | return M64ERR_INTERNAL; |
| 134 | } |
| 135 | if (romimage == NULL || !is_valid_rom(romimage)) |
| 136 | { |
| 137 | DebugMessage(M64MSG_ERROR, "open_rom(): not a valid ROM image"); |
| 138 | return M64ERR_INPUT_INVALID; |
| 139 | } |
| 140 | |
| 141 | /* Clear Byte-swapped flag, since ROM is now deleted. */ |
| 142 | g_MemHasBeenBSwapped = 0; |
| 143 | /* allocate new buffer for ROM and copy into this buffer */ |
| 144 | rom_size = size; |
| 145 | rom = (unsigned char *) malloc(size); |
| 146 | if (rom == NULL) |
| 147 | return M64ERR_NO_MEMORY; |
| 148 | memcpy(rom, romimage, size); |
| 149 | swap_rom(rom, &imagetype, rom_size); |
| 150 | |
| 151 | memcpy(&ROM_HEADER, rom, sizeof(m64p_rom_header)); |
| 152 | |
| 153 | /* Calculate MD5 hash */ |
| 154 | md5_init(&state); |
| 155 | md5_append(&state, (const md5_byte_t*)rom, rom_size); |
| 156 | md5_finish(&state, digest); |
| 157 | for ( i = 0; i < 16; ++i ) |
| 158 | sprintf(buffer+i*2, "%02X", digest[i]); |
| 159 | buffer[32] = '\0'; |
| 160 | strcpy(ROM_SETTINGS.MD5, buffer); |
| 161 | |
| 162 | /* add some useful properties to ROM_PARAMS */ |
| 163 | ROM_PARAMS.systemtype = rom_country_code_to_system_type(ROM_HEADER.Country_code); |
| 164 | ROM_PARAMS.vilimit = rom_system_type_to_vi_limit(ROM_PARAMS.systemtype); |
| 165 | ROM_PARAMS.aidacrate = rom_system_type_to_ai_dac_rate(ROM_PARAMS.systemtype); |
| 166 | |
| 167 | memcpy(ROM_PARAMS.headername, ROM_HEADER.Name, 20); |
| 168 | ROM_PARAMS.headername[20] = '\0'; |
| 169 | trim(ROM_PARAMS.headername); /* Remove trailing whitespace from ROM name. */ |
| 170 | |
| 171 | /* Look up this ROM in the .ini file and fill in goodname, etc */ |
| 172 | if ((entry=ini_search_by_md5(digest)) != NULL || |
| 173 | (entry=ini_search_by_crc(sl(ROM_HEADER.CRC1),sl(ROM_HEADER.CRC2))) != NULL) |
| 174 | { |
| 175 | strncpy(ROM_SETTINGS.goodname, entry->goodname, 255); |
| 176 | ROM_SETTINGS.goodname[255] = '\0'; |
| 177 | ROM_SETTINGS.savetype = entry->savetype; |
| 178 | ROM_SETTINGS.status = entry->status; |
| 179 | ROM_SETTINGS.players = entry->players; |
| 180 | ROM_SETTINGS.rumble = entry->rumble; |
| 181 | } |
| 182 | else |
| 183 | { |
| 184 | strcpy(ROM_SETTINGS.goodname, ROM_PARAMS.headername); |
| 185 | strcat(ROM_SETTINGS.goodname, " (unknown rom)"); |
| 186 | ROM_SETTINGS.savetype = NONE; |
| 187 | ROM_SETTINGS.status = 0; |
| 188 | ROM_SETTINGS.players = 0; |
| 189 | ROM_SETTINGS.rumble = 0; |
| 190 | } |
| 191 | |
| 192 | /* print out a bunch of info about the ROM */ |
| 193 | DebugMessage(M64MSG_INFO, "Goodname: %s", ROM_SETTINGS.goodname); |
| 194 | DebugMessage(M64MSG_INFO, "Name: %s", ROM_HEADER.Name); |
| 195 | imagestring(imagetype, buffer); |
| 196 | DebugMessage(M64MSG_INFO, "MD5: %s", ROM_SETTINGS.MD5); |
| 197 | DebugMessage(M64MSG_INFO, "CRC: %x %x", sl(ROM_HEADER.CRC1), sl(ROM_HEADER.CRC2)); |
| 198 | DebugMessage(M64MSG_INFO, "Imagetype: %s", buffer); |
| 199 | DebugMessage(M64MSG_INFO, "Rom size: %d bytes (or %d Mb or %d Megabits)", rom_size, rom_size/1024/1024, rom_size/1024/1024*8); |
| 200 | DebugMessage(M64MSG_VERBOSE, "ClockRate = %x", sl(ROM_HEADER.ClockRate)); |
| 201 | DebugMessage(M64MSG_INFO, "Version: %x", sl(ROM_HEADER.Release)); |
| 202 | if(sl(ROM_HEADER.Manufacturer_ID) == 'N') |
| 203 | DebugMessage(M64MSG_INFO, "Manufacturer: Nintendo"); |
| 204 | else |
| 205 | DebugMessage(M64MSG_INFO, "Manufacturer: %x", sl(ROM_HEADER.Manufacturer_ID)); |
| 206 | DebugMessage(M64MSG_VERBOSE, "Cartridge_ID: %x", ROM_HEADER.Cartridge_ID); |
| 207 | countrycodestring(ROM_HEADER.Country_code, buffer); |
| 208 | DebugMessage(M64MSG_INFO, "Country: %s", buffer); |
| 209 | DebugMessage(M64MSG_VERBOSE, "PC = %x", sl((unsigned int)ROM_HEADER.PC)); |
| 210 | DebugMessage(M64MSG_VERBOSE, "Save type: %d", ROM_SETTINGS.savetype); |
| 211 | |
| 212 | //Prepare Hack for GOLDENEYE |
| 213 | isGoldeneyeRom = 0; |
| 214 | if(strcmp(ROM_PARAMS.headername, "GOLDENEYE") == 0) |
| 215 | isGoldeneyeRom = 1; |
| 216 | |
| 217 | return M64ERR_SUCCESS; |
| 218 | } |
| 219 | |
| 220 | m64p_error close_rom(void) |
| 221 | { |
| 222 | if (rom == NULL) |
| 223 | return M64ERR_INVALID_STATE; |
| 224 | |
| 225 | free(rom); |
| 226 | rom = NULL; |
| 227 | |
| 228 | /* Clear Byte-swapped flag, since ROM is now deleted. */ |
| 229 | g_MemHasBeenBSwapped = 0; |
| 230 | DebugMessage(M64MSG_STATUS, "Rom closed."); |
| 231 | |
| 232 | return M64ERR_SUCCESS; |
| 233 | } |
| 234 | |
| 235 | /********************************************************************************************/ |
| 236 | /* ROM utility functions */ |
| 237 | |
| 238 | // Get the system type associated to a ROM country code. |
| 239 | static m64p_system_type rom_country_code_to_system_type(unsigned short country_code) |
| 240 | { |
| 241 | switch (country_code & 0xFF) |
| 242 | { |
| 243 | // PAL codes |
| 244 | case 0x44: |
| 245 | case 0x46: |
| 246 | case 0x49: |
| 247 | case 0x50: |
| 248 | case 0x53: |
| 249 | case 0x55: |
| 250 | case 0x58: |
| 251 | case 0x59: |
| 252 | return SYSTEM_PAL; |
| 253 | |
| 254 | // NTSC codes |
| 255 | case 0x37: |
| 256 | case 0x41: |
| 257 | case 0x45: |
| 258 | case 0x4a: |
| 259 | default: // Fallback for unknown codes |
| 260 | return SYSTEM_NTSC; |
| 261 | } |
| 262 | } |
| 263 | |
| 264 | // Get the VI (vertical interrupt) limit associated to a ROM system type. |
| 265 | static int rom_system_type_to_vi_limit(m64p_system_type system_type) |
| 266 | { |
| 267 | switch (system_type) |
| 268 | { |
| 269 | case SYSTEM_PAL: |
| 270 | case SYSTEM_MPAL: |
| 271 | return 50; |
| 272 | |
| 273 | case SYSTEM_NTSC: |
| 274 | default: |
| 275 | return 60; |
| 276 | } |
| 277 | } |
| 278 | |
| 279 | static int rom_system_type_to_ai_dac_rate(m64p_system_type system_type) |
| 280 | { |
| 281 | switch (system_type) |
| 282 | { |
| 283 | case SYSTEM_PAL: |
| 284 | return 49656530; |
| 285 | case SYSTEM_MPAL: |
| 286 | return 48628316; |
| 287 | case SYSTEM_NTSC: |
| 288 | default: |
| 289 | return 48681812; |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | /********************************************************************************************/ |
| 294 | /* INI Rom database functions */ |
| 295 | |
| 296 | void romdatabase_open(void) |
| 297 | { |
| 298 | FILE *fPtr; |
| 299 | char buffer[256]; |
| 300 | romdatabase_search* search = NULL; |
| 301 | romdatabase_search** next_search; |
| 302 | |
| 303 | int counter, value, lineno; |
| 304 | unsigned char index; |
| 305 | const char *pathname = ConfigGetSharedDataFilepath("mupen64plus.ini"); |
| 306 | |
| 307 | if(g_romdatabase.have_database) |
| 308 | return; |
| 309 | |
| 310 | /* Open romdatabase. */ |
| 311 | if (pathname == NULL || (fPtr = fopen(pathname, "rb")) == NULL) |
| 312 | { |
| 313 | DebugMessage(M64MSG_ERROR, "Unable to open rom database file '%s'.", pathname); |
| 314 | return; |
| 315 | } |
| 316 | |
| 317 | g_romdatabase.have_database = 1; |
| 318 | |
| 319 | /* Clear premade indices. */ |
| 320 | for(counter = 0; counter < 255; ++counter) |
| 321 | g_romdatabase.crc_lists[counter] = NULL; |
| 322 | for(counter = 0; counter < 255; ++counter) |
| 323 | g_romdatabase.md5_lists[counter] = NULL; |
| 324 | g_romdatabase.list = NULL; |
| 325 | |
| 326 | next_search = &g_romdatabase.list; |
| 327 | |
| 328 | /* Parse ROM database file */ |
| 329 | for (lineno = 1; fgets(buffer, 255, fPtr) != NULL; lineno++) |
| 330 | { |
| 331 | char *line = buffer; |
| 332 | ini_line l = ini_parse_line(&line); |
| 333 | switch (l.type) |
| 334 | { |
| 335 | case INI_SECTION: |
| 336 | { |
| 337 | md5_byte_t md5[16]; |
| 338 | if (!parse_hex(l.name, md5, 16)) |
| 339 | { |
| 340 | DebugMessage(M64MSG_WARNING, "ROM Database: Invalid MD5 on line %i", lineno); |
| 341 | search = NULL; |
| 342 | continue; |
| 343 | } |
| 344 | |
| 345 | *next_search = (romdatabase_search*)malloc(sizeof(romdatabase_search)); |
| 346 | search = *next_search; |
| 347 | next_search = &search->next_entry; |
| 348 | |
| 349 | search->entry.goodname = NULL; |
| 350 | memcpy(search->entry.md5, md5, 16); |
| 351 | search->entry.refmd5 = NULL; |
| 352 | search->entry.crc1 = 0; |
| 353 | search->entry.crc2 = 0; |
| 354 | search->entry.status = 0; /* Set default to 0 stars. */ |
| 355 | search->entry.savetype = DEFAULT; |
| 356 | search->entry.players = DEFAULT; |
| 357 | search->entry.rumble = DEFAULT; |
| 358 | |
| 359 | search->next_entry = NULL; |
| 360 | search->next_crc = NULL; |
| 361 | /* Index MD5s by first 8 bits. */ |
| 362 | index = search->entry.md5[0]; |
| 363 | search->next_md5 = g_romdatabase.md5_lists[index]; |
| 364 | g_romdatabase.md5_lists[index] = search; |
| 365 | |
| 366 | break; |
| 367 | } |
| 368 | case INI_PROPERTY: |
| 369 | // This happens if there's stray properties before any section, |
| 370 | // or if some error happened on INI_SECTION (e.g. parsing). |
| 371 | if (search == NULL) |
| 372 | { |
| 373 | DebugMessage(M64MSG_WARNING, "ROM Database: Ignoring property on line %i", lineno); |
| 374 | continue; |
| 375 | } |
| 376 | if(!strcmp(l.name, "GoodName")) |
| 377 | { |
| 378 | search->entry.goodname = strdup(l.value); |
| 379 | } |
| 380 | else if(!strcmp(l.name, "CRC")) |
| 381 | { |
| 382 | char garbage_sweeper; |
| 383 | if (sscanf(l.value, "%X %X%c", &search->entry.crc1, |
| 384 | &search->entry.crc2, &garbage_sweeper) == 2) |
| 385 | { |
| 386 | /* Index CRCs by first 8 bits. */ |
| 387 | index = search->entry.crc1 >> 24; |
| 388 | search->next_crc = g_romdatabase.crc_lists[index]; |
| 389 | g_romdatabase.crc_lists[index] = search; |
| 390 | } |
| 391 | else |
| 392 | { |
| 393 | search->entry.crc1 = search->entry.crc2 = 0; |
| 394 | DebugMessage(M64MSG_WARNING, "ROM Database: Invalid CRC on line %i", lineno); |
| 395 | } |
| 396 | } |
| 397 | else if(!strcmp(l.name, "RefMD5")) |
| 398 | { |
| 399 | md5_byte_t md5[16]; |
| 400 | if (parse_hex(l.value, md5, 16)) |
| 401 | { |
| 402 | search->entry.refmd5 = (md5_byte_t*)malloc(16*sizeof(md5_byte_t)); |
| 403 | memcpy(search->entry.refmd5, md5, 16); |
| 404 | } |
| 405 | else |
| 406 | DebugMessage(M64MSG_WARNING, "ROM Database: Invalid RefMD5 on line %i", lineno); |
| 407 | } |
| 408 | else if(!strcmp(l.name, "SaveType")) |
| 409 | { |
| 410 | if(!strcmp(l.value, "Eeprom 4KB")) |
| 411 | search->entry.savetype = EEPROM_4KB; |
| 412 | else if(!strcmp(l.value, "Eeprom 16KB")) |
| 413 | search->entry.savetype = EEPROM_16KB; |
| 414 | else if(!strcmp(l.value, "SRAM")) |
| 415 | search->entry.savetype = SRAM; |
| 416 | else if(!strcmp(l.value, "Flash RAM")) |
| 417 | search->entry.savetype = FLASH_RAM; |
| 418 | else if(!strcmp(l.value, "Controller Pack")) |
| 419 | search->entry.savetype = CONTROLLER_PACK; |
| 420 | else if(!strcmp(l.value, "None")) |
| 421 | search->entry.savetype = NONE; |
| 422 | else |
| 423 | DebugMessage(M64MSG_WARNING, "ROM Database: Invalid save type on line %i", lineno); |
| 424 | } |
| 425 | else if(!strcmp(l.name, "Status")) |
| 426 | { |
| 427 | if (string_to_int(l.value, &value) && value >= 0 && value < 6) |
| 428 | search->entry.status = value; |
| 429 | else |
| 430 | DebugMessage(M64MSG_WARNING, "ROM Database: Invalid status on line %i", lineno); |
| 431 | } |
| 432 | else if(!strcmp(l.name, "Players")) |
| 433 | { |
| 434 | if (string_to_int(l.value, &value) && value >= 0 && value < 8) |
| 435 | search->entry.players = value; |
| 436 | else |
| 437 | DebugMessage(M64MSG_WARNING, "ROM Database: Invalid player count on line %i", lineno); |
| 438 | } |
| 439 | else if(!strcmp(l.name, "Rumble")) |
| 440 | { |
| 441 | if(!strcmp(l.value, "Yes")) |
| 442 | search->entry.rumble = 1; |
| 443 | else if(!strcmp(l.value, "No")) |
| 444 | search->entry.rumble = 0; |
| 445 | else |
| 446 | DebugMessage(M64MSG_WARNING, "ROM Database: Invalid rumble string on line %i", lineno); |
| 447 | } |
| 448 | else |
| 449 | { |
| 450 | DebugMessage(M64MSG_WARNING, "ROM Database: Unknown property on line %i", lineno); |
| 451 | } |
| 452 | break; |
| 453 | default: |
| 454 | break; |
| 455 | } |
| 456 | } |
| 457 | |
| 458 | fclose(fPtr); |
| 459 | |
| 460 | /* Resolve RefMD5 references */ |
| 461 | for (search = g_romdatabase.list; search != NULL; search = search->next_entry) |
| 462 | { |
| 463 | if (search->entry.refmd5 != NULL) |
| 464 | { |
| 465 | romdatabase_entry *ref = ini_search_by_md5(search->entry.refmd5); |
| 466 | if (ref != NULL) |
| 467 | { |
| 468 | if(ref->savetype!=DEFAULT) |
| 469 | search->entry.savetype = ref->savetype; |
| 470 | if(ref->status!=0) |
| 471 | search->entry.status = ref->status; |
| 472 | if(ref->players!=DEFAULT) |
| 473 | search->entry.players = ref->players; |
| 474 | if(ref->rumble!=DEFAULT) |
| 475 | search->entry.rumble = ref->rumble; |
| 476 | } |
| 477 | else |
| 478 | DebugMessage(M64MSG_WARNING, "ROM Database: Error solving RefMD5s"); |
| 479 | } |
| 480 | } |
| 481 | } |
| 482 | |
| 483 | void romdatabase_close(void) |
| 484 | { |
| 485 | if (!g_romdatabase.have_database) |
| 486 | return; |
| 487 | |
| 488 | while (g_romdatabase.list != NULL) |
| 489 | { |
| 490 | romdatabase_search* search = g_romdatabase.list->next_entry; |
| 491 | if(g_romdatabase.list->entry.goodname) |
| 492 | free(g_romdatabase.list->entry.goodname); |
| 493 | if(g_romdatabase.list->entry.refmd5) |
| 494 | free(g_romdatabase.list->entry.refmd5); |
| 495 | free(g_romdatabase.list); |
| 496 | g_romdatabase.list = search; |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | static romdatabase_entry* ini_search_by_md5(md5_byte_t* md5) |
| 501 | { |
| 502 | romdatabase_search* search; |
| 503 | |
| 504 | if(!g_romdatabase.have_database) |
| 505 | return NULL; |
| 506 | |
| 507 | search = g_romdatabase.md5_lists[md5[0]]; |
| 508 | |
| 509 | while (search != NULL && memcmp(search->entry.md5, md5, 16) != 0) |
| 510 | search = search->next_md5; |
| 511 | |
| 512 | if(search==NULL) |
| 513 | return NULL; |
| 514 | |
| 515 | return &(search->entry); |
| 516 | } |
| 517 | |
| 518 | romdatabase_entry* ini_search_by_crc(unsigned int crc1, unsigned int crc2) |
| 519 | { |
| 520 | romdatabase_search* search; |
| 521 | |
| 522 | if(!g_romdatabase.have_database) |
| 523 | return NULL; |
| 524 | |
| 525 | search = g_romdatabase.crc_lists[((crc1 >> 24) & 0xff)]; |
| 526 | |
| 527 | while (search != NULL && search->entry.crc1 != crc1 && search->entry.crc2 != crc2) |
| 528 | search = search->next_crc; |
| 529 | |
| 530 | if(search == NULL) |
| 531 | return NULL; |
| 532 | |
| 533 | return &(search->entry); |
| 534 | } |
| 535 | |
| 536 | |