Mercurial > sdl-ios-xcode
annotate src/cdrom/freebsd/SDL_syscdrom.c @ 1472:4aac8563c296
Fixed more Win64 portability issues
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 06 Mar 2006 08:11:10 +0000 |
| parents | d910939febfa |
| children | 92947e3a18db |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
|
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parents:
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15 You should have received a copy of the GNU Lesser General Public |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
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16 License along with this library; if not, write to the Free Software |
|
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parents:
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 /* Functions for system-level CD-ROM audio control */ | |
| 25 | |
| 26 #include <sys/types.h> | |
| 27 #include <sys/stat.h> | |
| 28 #include <fcntl.h> | |
| 29 #include <errno.h> | |
| 30 #include <unistd.h> | |
| 31 #include <sys/cdio.h> | |
| 32 | |
| 33 #include "SDL_cdrom.h" | |
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34 #include "../SDL_syscdrom.h" |
| 0 | 35 |
| 36 | |
| 37 /* The maximum number of CD-ROM drives we'll detect */ | |
| 38 #define MAX_DRIVES 16 | |
| 39 | |
| 40 /* A list of available CD-ROM drives */ | |
| 41 static char *SDL_cdlist[MAX_DRIVES]; | |
| 42 static dev_t SDL_cdmode[MAX_DRIVES]; | |
| 43 | |
| 44 /* The system-dependent CD control functions */ | |
| 45 static const char *SDL_SYS_CDName(int drive); | |
| 46 static int SDL_SYS_CDOpen(int drive); | |
| 47 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); | |
| 48 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); | |
| 49 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); | |
| 50 static int SDL_SYS_CDPause(SDL_CD *cdrom); | |
| 51 static int SDL_SYS_CDResume(SDL_CD *cdrom); | |
| 52 static int SDL_SYS_CDStop(SDL_CD *cdrom); | |
| 53 static int SDL_SYS_CDEject(SDL_CD *cdrom); | |
| 54 static void SDL_SYS_CDClose(SDL_CD *cdrom); | |
| 55 | |
| 56 /* Some ioctl() errno values which occur when the tray is empty */ | |
| 57 #define ERRNO_TRAYEMPTY(errno) \ | |
| 58 ((errno == EIO) || (errno == ENOENT) || (errno == EINVAL)) | |
| 59 | |
| 60 /* Check a drive to see if it is a CD-ROM */ | |
| 61 static int CheckDrive(char *drive, struct stat *stbuf) | |
| 62 { | |
| 63 int is_cd, cdfd; | |
| 64 struct ioc_read_subchannel info; | |
| 65 | |
| 66 /* If it doesn't exist, return -1 */ | |
| 67 if ( stat(drive, stbuf) < 0 ) { | |
| 68 return(-1); | |
| 69 } | |
| 70 | |
| 71 /* If it does exist, verify that it's an available CD-ROM */ | |
| 72 is_cd = 0; | |
| 73 if ( S_ISCHR(stbuf->st_mode) || S_ISBLK(stbuf->st_mode) ) { | |
| 74 cdfd = open(drive, (O_RDONLY|O_EXCL|O_NONBLOCK), 0); | |
| 75 if ( cdfd >= 0 ) { | |
| 76 info.address_format = CD_MSF_FORMAT; | |
| 77 info.data_format = CD_CURRENT_POSITION; | |
| 78 info.data_len = 0; | |
| 79 info.data = NULL; | |
| 80 /* Under Linux, EIO occurs when a disk is not present. | |
| 81 This isn't 100% reliable, so we use the USE_MNTENT | |
| 82 code above instead. | |
| 83 */ | |
| 84 if ( (ioctl(cdfd, CDIOCREADSUBCHANNEL, &info) == 0) || | |
| 85 ERRNO_TRAYEMPTY(errno) ) { | |
| 86 is_cd = 1; | |
| 87 } | |
| 88 close(cdfd); | |
| 89 } | |
| 90 } | |
| 91 return(is_cd); | |
| 92 } | |
| 93 | |
| 94 /* Add a CD-ROM drive to our list of valid drives */ | |
| 95 static void AddDrive(char *drive, struct stat *stbuf) | |
| 96 { | |
| 97 int i; | |
| 98 | |
| 99 if ( SDL_numcds < MAX_DRIVES ) { | |
| 100 /* Check to make sure it's not already in our list. | |
| 101 This can happen when we see a drive via symbolic link. | |
| 102 */ | |
| 103 for ( i=0; i<SDL_numcds; ++i ) { | |
| 104 if ( stbuf->st_rdev == SDL_cdmode[i] ) { | |
| 105 #ifdef DEBUG_CDROM | |
| 106 fprintf(stderr, "Duplicate drive detected: %s == %s\n", drive, SDL_cdlist[i]); | |
| 107 #endif | |
| 108 return; | |
| 109 } | |
| 110 } | |
| 111 | |
| 112 /* Add this drive to our list */ | |
| 113 i = SDL_numcds; | |
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114 SDL_cdlist[i] = SDL_strdup(drive); |
| 0 | 115 if ( SDL_cdlist[i] == NULL ) { |
| 116 SDL_OutOfMemory(); | |
| 117 return; | |
| 118 } | |
| 119 SDL_cdmode[i] = stbuf->st_rdev; | |
| 120 ++SDL_numcds; | |
| 121 #ifdef DEBUG_CDROM | |
| 122 fprintf(stderr, "Added CD-ROM drive: %s\n", drive); | |
| 123 #endif | |
| 124 } | |
| 125 } | |
| 126 | |
| 127 int SDL_SYS_CDInit(void) | |
| 128 { | |
| 129 /* checklist: /dev/cdrom,/dev/cd?c /dev/acd?c | |
| 130 /dev/matcd?c /dev/mcd?c /dev/scd?c */ | |
| 131 static char *checklist[] = { | |
| 132 "cdrom", "?0 cd?", "?0 acd?", "?0 matcd?", "?0 mcd?", "?0 scd?",NULL | |
| 133 }; | |
| 134 char *SDLcdrom; | |
| 135 int i, j, exists; | |
| 136 char drive[32]; | |
| 137 struct stat stbuf; | |
| 138 | |
| 139 /* Fill in our driver capabilities */ | |
| 140 SDL_CDcaps.Name = SDL_SYS_CDName; | |
| 141 SDL_CDcaps.Open = SDL_SYS_CDOpen; | |
| 142 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; | |
| 143 SDL_CDcaps.Status = SDL_SYS_CDStatus; | |
| 144 SDL_CDcaps.Play = SDL_SYS_CDPlay; | |
| 145 SDL_CDcaps.Pause = SDL_SYS_CDPause; | |
| 146 SDL_CDcaps.Resume = SDL_SYS_CDResume; | |
| 147 SDL_CDcaps.Stop = SDL_SYS_CDStop; | |
| 148 SDL_CDcaps.Eject = SDL_SYS_CDEject; | |
| 149 SDL_CDcaps.Close = SDL_SYS_CDClose; | |
| 150 | |
| 151 /* Look in the environment for our CD-ROM drive list */ | |
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152 SDLcdrom = SDL_getenv("SDL_CDROM"); /* ':' separated list of devices */ |
| 0 | 153 if ( SDLcdrom != NULL ) { |
| 154 char *cdpath, *delim; | |
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155 size_t len = SDL_strlen(SDLcdrom)+1; |
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156 cdpath = SDL_stack_alloc(char, len); |
| 0 | 157 if ( cdpath != NULL ) { |
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158 SDL_strlcpy(cdpath, SDLcdrom, len); |
| 0 | 159 SDLcdrom = cdpath; |
| 160 do { | |
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161 delim = SDL_strchr(SDLcdrom, ':'); |
| 0 | 162 if ( delim ) { |
| 163 *delim++ = '\0'; | |
| 164 } | |
| 165 if ( CheckDrive(SDLcdrom, &stbuf) > 0 ) { | |
| 166 AddDrive(SDLcdrom, &stbuf); | |
| 167 } | |
| 168 if ( delim ) { | |
| 169 SDLcdrom = delim; | |
| 170 } else { | |
| 171 SDLcdrom = NULL; | |
| 172 } | |
| 173 } while ( SDLcdrom ); | |
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174 SDL_stack_free(cdpath); |
| 0 | 175 } |
| 176 | |
| 177 /* If we found our drives, there's nothing left to do */ | |
| 178 if ( SDL_numcds > 0 ) { | |
| 179 return(0); | |
| 180 } | |
| 181 } | |
| 182 | |
| 183 /* Scan the system for CD-ROM drives */ | |
| 184 for ( i=0; checklist[i]; ++i ) { | |
| 185 if ( checklist[i][0] == '?' ) { | |
| 186 char *insert; | |
| 187 exists = 1; | |
| 188 for ( j=checklist[i][1]; exists; ++j ) { | |
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189 SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%sc", &checklist[i][3]); |
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190 insert = SDL_strchr(drive, '?'); |
| 0 | 191 if ( insert != NULL ) { |
| 192 *insert = j; | |
| 193 } | |
| 194 switch (CheckDrive(drive, &stbuf)) { | |
| 195 /* Drive exists and is a CD-ROM */ | |
| 196 case 1: | |
| 197 AddDrive(drive, &stbuf); | |
| 198 break; | |
| 199 /* Drive exists, but isn't a CD-ROM */ | |
| 200 case 0: | |
| 201 break; | |
| 202 /* Drive doesn't exist */ | |
| 203 case -1: | |
| 204 exists = 0; | |
| 205 break; | |
| 206 } | |
| 207 } | |
| 208 } else { | |
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209 SDL_snprintf(drive, SDL_arraysize(drive), "/dev/%s", checklist[i]); |
| 0 | 210 if ( CheckDrive(drive, &stbuf) > 0 ) { |
| 211 AddDrive(drive, &stbuf); | |
| 212 } | |
| 213 } | |
| 214 } | |
| 215 return(0); | |
| 216 } | |
| 217 | |
| 218 /* General ioctl() CD-ROM command function */ | |
| 219 static int SDL_SYS_CDioctl(int id, int command, void *arg) | |
| 220 { | |
| 221 int retval; | |
| 222 | |
| 223 retval = ioctl(id, command, arg); | |
| 224 if ( retval < 0 ) { | |
| 225 SDL_SetError("ioctl() error: %s", strerror(errno)); | |
| 226 } | |
| 227 return(retval); | |
| 228 } | |
| 229 | |
| 230 static const char *SDL_SYS_CDName(int drive) | |
| 231 { | |
| 232 return(SDL_cdlist[drive]); | |
| 233 } | |
| 234 | |
| 235 static int SDL_SYS_CDOpen(int drive) | |
| 236 { | |
| 237 return(open(SDL_cdlist[drive], (O_RDONLY|O_EXCL|O_NONBLOCK), 0)); | |
| 238 } | |
| 239 | |
| 240 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) | |
| 241 { | |
| 242 struct ioc_toc_header toc; | |
| 243 int i, okay; | |
| 244 struct ioc_read_toc_entry entry; | |
| 245 struct cd_toc_entry data; | |
| 246 | |
| 247 okay = 0; | |
| 248 if ( SDL_SYS_CDioctl(cdrom->id, CDIOREADTOCHEADER, &toc) == 0 ) { | |
| 249 cdrom->numtracks = toc.ending_track-toc.starting_track+1; | |
| 250 if ( cdrom->numtracks > SDL_MAX_TRACKS ) { | |
| 251 cdrom->numtracks = SDL_MAX_TRACKS; | |
| 252 } | |
| 253 /* Read all the track TOC entries */ | |
| 254 for ( i=0; i<=cdrom->numtracks; ++i ) { | |
| 255 if ( i == cdrom->numtracks ) { | |
| 256 cdrom->track[i].id = 0xAA; /* CDROM_LEADOUT */ | |
| 257 } else { | |
| 258 cdrom->track[i].id = toc.starting_track+i; | |
| 259 } | |
| 260 entry.starting_track = cdrom->track[i].id; | |
| 261 entry.address_format = CD_MSF_FORMAT; | |
| 262 entry.data_len = sizeof(data); | |
| 263 entry.data = &data; | |
| 264 if ( SDL_SYS_CDioctl(cdrom->id, CDIOREADTOCENTRYS, | |
| 265 &entry) < 0 ) { | |
| 266 break; | |
| 267 } else { | |
| 268 cdrom->track[i].type = data.control; | |
| 269 cdrom->track[i].offset = MSF_TO_FRAMES( | |
| 270 data.addr.msf.minute, | |
| 271 data.addr.msf.second, | |
| 272 data.addr.msf.frame); | |
| 273 cdrom->track[i].length = 0; | |
| 274 if ( i > 0 ) { | |
| 275 cdrom->track[i-1].length = | |
| 276 cdrom->track[i].offset- | |
| 277 cdrom->track[i-1].offset; | |
| 278 } | |
| 279 } | |
| 280 } | |
| 281 if ( i == (cdrom->numtracks+1) ) { | |
| 282 okay = 1; | |
| 283 } | |
| 284 } | |
| 285 return(okay ? 0 : -1); | |
| 286 } | |
| 287 | |
| 288 /* Get CD-ROM status */ | |
| 289 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) | |
| 290 { | |
| 291 CDstatus status; | |
| 292 struct ioc_toc_header toc; | |
| 293 struct ioc_read_subchannel info; | |
| 294 struct cd_sub_channel_info data; | |
| 295 | |
| 296 info.address_format = CD_MSF_FORMAT; | |
| 297 info.data_format = CD_CURRENT_POSITION; | |
| 298 info.track = 0; | |
| 299 info.data_len = sizeof(data); | |
| 300 info.data = &data; | |
| 301 if ( ioctl(cdrom->id, CDIOCREADSUBCHANNEL, &info) < 0 ) { | |
| 302 if ( ERRNO_TRAYEMPTY(errno) ) { | |
| 303 status = CD_TRAYEMPTY; | |
| 304 } else { | |
| 305 status = CD_ERROR; | |
| 306 } | |
| 307 } else { | |
| 308 switch (data.header.audio_status) { | |
| 309 case CD_AS_AUDIO_INVALID: | |
| 310 case CD_AS_NO_STATUS: | |
| 311 /* Try to determine if there's a CD available */ | |
| 312 if (ioctl(cdrom->id,CDIOREADTOCHEADER,&toc)==0) | |
| 313 status = CD_STOPPED; | |
| 314 else | |
| 315 status = CD_TRAYEMPTY; | |
| 316 break; | |
| 317 case CD_AS_PLAY_COMPLETED: | |
| 318 status = CD_STOPPED; | |
| 319 break; | |
| 320 case CD_AS_PLAY_IN_PROGRESS: | |
| 321 status = CD_PLAYING; | |
| 322 break; | |
| 323 case CD_AS_PLAY_PAUSED: | |
| 324 status = CD_PAUSED; | |
| 325 break; | |
| 326 default: | |
| 327 status = CD_ERROR; | |
| 328 break; | |
| 329 } | |
| 330 } | |
| 331 if ( position ) { | |
| 332 if ( status == CD_PLAYING || (status == CD_PAUSED) ) { | |
| 333 *position = MSF_TO_FRAMES( | |
| 334 data.what.position.absaddr.msf.minute, | |
| 335 data.what.position.absaddr.msf.second, | |
| 336 data.what.position.absaddr.msf.frame); | |
| 337 } else { | |
| 338 *position = 0; | |
| 339 } | |
| 340 } | |
| 341 return(status); | |
| 342 } | |
| 343 | |
| 344 /* Start play */ | |
| 345 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) | |
| 346 { | |
| 347 struct ioc_play_msf playtime; | |
| 348 | |
| 349 FRAMES_TO_MSF(start, | |
| 350 &playtime.start_m, &playtime.start_s, &playtime.start_f); | |
| 351 FRAMES_TO_MSF(start+length, | |
| 352 &playtime.end_m, &playtime.end_s, &playtime.end_f); | |
| 353 #ifdef DEBUG_CDROM | |
| 354 fprintf(stderr, "Trying to play from %d:%d:%d to %d:%d:%d\n", | |
| 355 playtime.cdmsf_min0, playtime.cdmsf_sec0, playtime.cdmsf_frame0, | |
| 356 playtime.cdmsf_min1, playtime.cdmsf_sec1, playtime.cdmsf_frame1); | |
| 357 #endif | |
| 358 ioctl(cdrom->id, CDIOCSTART, 0); | |
| 359 return(SDL_SYS_CDioctl(cdrom->id, CDIOCPLAYMSF, &playtime)); | |
| 360 } | |
| 361 | |
| 362 /* Pause play */ | |
| 363 static int SDL_SYS_CDPause(SDL_CD *cdrom) | |
| 364 { | |
| 365 return(SDL_SYS_CDioctl(cdrom->id, CDIOCPAUSE, 0)); | |
| 366 } | |
| 367 | |
| 368 /* Resume play */ | |
| 369 static int SDL_SYS_CDResume(SDL_CD *cdrom) | |
| 370 { | |
| 371 return(SDL_SYS_CDioctl(cdrom->id, CDIOCRESUME, 0)); | |
| 372 } | |
| 373 | |
| 374 /* Stop play */ | |
| 375 static int SDL_SYS_CDStop(SDL_CD *cdrom) | |
| 376 { | |
| 377 return(SDL_SYS_CDioctl(cdrom->id, CDIOCSTOP, 0)); | |
| 378 } | |
| 379 | |
| 380 /* Eject the CD-ROM */ | |
| 381 static int SDL_SYS_CDEject(SDL_CD *cdrom) | |
| 382 { | |
| 383 return(SDL_SYS_CDioctl(cdrom->id, CDIOCEJECT, 0)); | |
| 384 } | |
| 385 | |
| 386 /* Close the CD-ROM handle */ | |
| 387 static void SDL_SYS_CDClose(SDL_CD *cdrom) | |
| 388 { | |
| 389 close(cdrom->id); | |
| 390 } | |
| 391 | |
| 392 void SDL_SYS_CDQuit(void) | |
| 393 { | |
| 394 int i; | |
| 395 | |
| 396 if ( SDL_numcds > 0 ) { | |
| 397 for ( i=0; i<SDL_numcds; ++i ) { | |
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diff
changeset
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398 SDL_free(SDL_cdlist[i]); |
| 0 | 399 } |
| 400 SDL_numcds = 0; | |
| 401 } | |
| 402 } | |
| 403 |