modules/access/cdda.c

   1 /*****************************************************************************
   2  * cdda.c : CD digital audio input module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2000, 2003-2006, 2008-2009 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
   8  *          Gildas Bazin <gbazin@netcourrier.com>
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU Lesser General Public License as published by
  12  * the Free Software Foundation; either version 2.1 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public License
  21  * along with this program; if not, write to the Free Software Foundation,
  22  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /**
  26  * Todo:
  27  *   - Improve CDDB support (non-blocking, ...)
  28  *   - Fix tracknumber in MRL
  29  */
  30
  31 /*****************************************************************************
  32  * Preamble
  33  *****************************************************************************/
  34
  35 #ifdef HAVE_CONFIG_H
  36 # include "config.h"
  37 #endif
  38
  39 #include <assert.h>
  40 #include <math.h>
  41 #include <stdlib.h>
  42 #include <string.h>
  43
  44 #include <vlc_common.h>
  45 #include <vlc_demux.h>
  46 #include <vlc_plugin.h>
  47 #include <vlc_input.h>
  48 #include <vlc_access.h>
  49 #include <vlc_meta.h>
  50 #include <vlc_charset.h> /* ToLocaleDup */
  51 #include <vlc_url.h>
  52
  53 #include "vcd/cdrom.h"  /* For CDDA_DATA_SIZE */
  54
  55 #ifdef HAVE_LIBCDDB
  56  #include <cddb/cddb.h>
  57  #include <errno.h>
  58 #endif
  59
  60 static vcddev_t *DiscOpen(vlc_object_t *obj, const char *location,
  61                          const char *path, unsigned *restrict trackp)
  62 {
  63     char *devpath;
  64
  65     *trackp = var_InheritInteger(obj, "cdda-track");
  66
  67     if (path != NULL)
  68         devpath = ToLocaleDup(path);
  69     else if (location[0] != '\0')
  70     {
  71 #if (DIR_SEP_CHAR == '/')
  72         char *dec = vlc_uri_decode_duplicate(location);
  73         if (dec == NULL)
  74             return NULL;
  75
  76         /* GNOME CDDA syntax */
  77         const char *sl = strrchr(dec, '/');
  78         if (sl != NULL)
  79         {
  80             if (sscanf(sl, "/Track %2u", trackp) == 1)
  81                 dec[sl - dec] = '\0';
  82             else
  83                 *trackp = 0;
  84         }
  85
  86         if (unlikely(asprintf(&devpath, "/dev/%s", dec) == -1))
  87             devpath = NULL;
  88         free(dec);
  89 #else
  90         (void) location;
  91         return NULL;
  92 #endif
  93     }
  94     else
  95         devpath = var_InheritString(obj, "cd-audio");
  96
  97     if (devpath == NULL)
  98         return NULL;
  99
 100 #if defined (_WIN32) || defined (__OS2__)
 101     /* Trim backslash after drive letter */
 102     if (devpath[0] != '\0' && !strcmp(&devpath[1], ":" DIR_SEP))
 103         devpath[2] = '\0';
 104 #endif
 105
 106     /* Open CDDA */
 107     vcddev_t *dev = ioctl_Open(obj, devpath);
 108     if (dev == NULL)
 109         msg_Warn(obj, "cannot open disc %s", devpath);
 110     free(devpath);
 111
 112     return dev;
 113 }
 114
 115 /* how many blocks Demux() will read in each iteration */
 116 #define CDDA_BLOCKS_ONCE 20
 117
 118 typedef struct
 119 {
 120     vcddev_t    *vcddev;                            /* vcd device descriptor */
 121     es_out_id_t *es;
 122     date_t       pts;
 123
 124     unsigned start; /**< Track first sector */
 125     unsigned length; /**< Track total sectors */
 126     unsigned position; /**< Current offset within track sectors */
 127 } demux_sys_t;
 128
 129 static int Demux(demux_t *demux)
 130 {
 131     demux_sys_t *sys = demux->p_sys;
 132     unsigned count = CDDA_BLOCKS_ONCE;
 133
 134     if (sys->position >= sys->length)
 135         return VLC_DEMUXER_EOF;
 136
 137     if (sys->position + count >= sys->length)
 138         count = sys->length - sys->position;
 139
 140     block_t *block = block_Alloc(count * CDDA_DATA_SIZE);
 141     if (unlikely(block == NULL))
 142         return VLC_DEMUXER_EOF;
 143
 144     if (ioctl_ReadSectors(VLC_OBJECT(demux), sys->vcddev,
 145                           sys->start + sys->position,
 146                           block->p_buffer, count, CDDA_TYPE) < 0)
 147     {
 148         msg_Err(demux, "cannot read sector %u", sys->position);
 149         block_Release(block);
 150
 151         /* Skip potentially bad sector */
 152         sys->position++;
 153         return VLC_DEMUXER_SUCCESS;
 154     }
 155
 156     sys->position += count;
 157
 158     block->i_nb_samples = block->i_buffer / 4;
 159     block->i_dts = block->i_pts = VLC_TS_0 + date_Get(&sys->pts);
 160     date_Increment(&sys->pts, block->i_nb_samples);
 161
 162     es_out_Send(demux->out, sys->es, block);
 163     es_out_SetPCR(demux->out, VLC_TS_0 + date_Get(&sys->pts));
 164     return VLC_DEMUXER_SUCCESS;
 165 }
 166
 167 static int DemuxControl(demux_t *demux, int query, va_list args)
 168 {
 169     demux_sys_t *sys = demux->p_sys;
 170
 171     /* One sector is 40000/3 µs */
 172     static_assert (CDDA_DATA_SIZE * CLOCK_FREQ * 3 ==
 173                    4 * 44100 * INT64_C(40000), "Wrong time/sector ratio");
 174
 175     switch (query)
 176     {
 177         case DEMUX_CAN_SEEK:
 178         case DEMUX_CAN_PAUSE:
 179         case DEMUX_CAN_CONTROL_PACE:
 180             *va_arg(args, bool*) = true;
 181             break;
 182         case DEMUX_GET_PTS_DELAY:
 183             *va_arg(args, int64_t *) =
 184                 INT64_C(1000) * var_InheritInteger(demux, "disc-caching");
 185             break;
 186
 187         case DEMUX_SET_PAUSE_STATE:
 188             break;
 189
 190         case DEMUX_GET_POSITION:
 191             *va_arg(args, double *) = (double)(sys->position)
 192                                       / (double)(sys->length);
 193             break;
 194
 195         case DEMUX_SET_POSITION:
 196             sys->position = lround(va_arg(args, double) * sys->length);
 197             break;
 198
 199         case DEMUX_GET_LENGTH:
 200             *va_arg(args, mtime_t *) = (INT64_C(40000) * sys->length) / 3;
 201             break;
 202         case DEMUX_GET_TIME:
 203             *va_arg(args, mtime_t *) = (INT64_C(40000) * sys->position) / 3;
 204             break;
 205         case DEMUX_SET_TIME:
 206             sys->position = (va_arg(args, mtime_t) * 3) / INT64_C(40000);
 207             break;
 208
 209         default:
 210             return VLC_EGENERIC;
 211     }
 212     return VLC_SUCCESS;
 213 }
 214
 215 static int DemuxOpen(vlc_object_t *obj, vcddev_t *dev, unsigned track)
 216 {
 217     demux_t *demux = (demux_t *)obj;
 218
 219     if (demux->out == NULL)
 220         goto error;
 221
 222     demux_sys_t *sys = vlc_obj_malloc(obj, sizeof (*sys));
 223     if (unlikely(sys == NULL))
 224         goto error;
 225
 226     demux->p_sys = sys;
 227     sys->vcddev = dev;
 228     sys->start = var_InheritInteger(obj, "cdda-first-sector");
 229     sys->length = var_InheritInteger(obj, "cdda-last-sector") - sys->start;
 230
 231     /* Track number in input item */
 232     if (sys->start == (unsigned)-1 || sys->length == (unsigned)-1)
 233     {
 234         int *sectors = NULL; /* Track sectors */
 235         unsigned titles = ioctl_GetTracksMap(obj, dev, &sectors);
 236
 237         if (track > titles)
 238         {
 239             msg_Err(obj, "invalid track number: %u/%u", track, titles);
 240             free(sectors);
 241             goto error;
 242         }
 243
 244         sys->start = sectors[track - 1];
 245         sys->length = sectors[track] - sys->start;
 246         free(sectors);
 247     }
 248
 249     es_format_t fmt;
 250
 251     es_format_Init(&fmt, AUDIO_ES, VLC_CODEC_S16L);
 252     fmt.audio.i_rate = 44100;
 253     fmt.audio.i_channels = 2;
 254     sys->es = es_out_Add(demux->out, &fmt);
 255
 256     date_Init(&sys->pts, 44100, 1);
 257
 258     sys->position = 0;
 259     demux->pf_demux = Demux;
 260     demux->pf_control = DemuxControl;
 261     return VLC_SUCCESS;
 262
 263 error:
 264     ioctl_Close(obj, dev);
 265     return VLC_EGENERIC;
 266 }
 267
 268 /*****************************************************************************
 269  * Access: local prototypes
 270  *****************************************************************************/
 271 typedef struct
 272 {
 273     vcddev_t    *vcddev;                            /* vcd device descriptor */
 274     int         *p_sectors;                                 /* Track sectors */
 275     int          titles;
 276     int          cdtextc;
 277     vlc_meta_t **cdtextv;
 278 #ifdef HAVE_LIBCDDB
 279     cddb_disc_t *cddb;
 280 #endif
 281 } access_sys_t;
 282
 283 #ifdef HAVE_LIBCDDB
 284 static cddb_disc_t *GetCDDBInfo( vlc_object_t *obj, int i_titles, int *p_sectors )
 285 {
 286     if( !var_InheritBool( obj, "metadata-network-access" ) )
 287     {
 288         msg_Dbg( obj, "album art policy set to manual: not fetching" );
 289         return NULL;
 290     }
 291
 292     /* */
 293     cddb_conn_t *p_cddb = cddb_new();
 294     if( !p_cddb )
 295     {
 296         msg_Warn( obj, "unable to use CDDB" );
 297         return NULL;
 298     }
 299
 300     /* */
 301
 302     cddb_http_enable( p_cddb );
 303
 304     char *psz_tmp = var_InheritString( obj, "cddb-server" );
 305     if( psz_tmp )
 306     {
 307         cddb_set_server_name( p_cddb, psz_tmp );
 308         free( psz_tmp );
 309     }
 310
 311     cddb_set_server_port( p_cddb, var_InheritInteger( obj, "cddb-port" ) );
 312
 313     cddb_set_email_address( p_cddb, "vlc@videolan.org" );
 314
 315     cddb_set_http_path_query( p_cddb, "/~cddb/cddb.cgi" );
 316     cddb_set_http_path_submit( p_cddb, "/~cddb/submit.cgi" );
 317
 318
 319     char *psz_cachedir;
 320     char *psz_temp = config_GetUserDir( VLC_CACHE_DIR );
 321
 322     if( asprintf( &psz_cachedir, "%s" DIR_SEP "cddb", psz_temp ) > 0 ) {
 323         cddb_cache_enable( p_cddb );
 324         cddb_cache_set_dir( p_cddb, psz_cachedir );
 325         free( psz_cachedir );
 326     }
 327     free( psz_temp );
 328
 329     cddb_set_timeout( p_cddb, 10 );
 330
 331     /* */
 332     cddb_disc_t *p_disc = cddb_disc_new();
 333     if( !p_disc )
 334     {
 335         msg_Err( obj, "unable to create CDDB disc structure." );
 336         goto error;
 337     }
 338
 339     int64_t i_length = 2000000; /* PreGap */
 340     for( int i = 0; i < i_titles; i++ )
 341     {
 342         cddb_track_t *t = cddb_track_new();
 343         cddb_track_set_frame_offset( t, p_sectors[i] + 150 );  /* Pregap offset */
 344
 345         cddb_disc_add_track( p_disc, t );
 346         const int64_t i_size = ( p_sectors[i+1] - p_sectors[i] ) *
 347                                (int64_t)CDDA_DATA_SIZE;
 348         i_length += INT64_C(1000000) * i_size / 44100 / 4  ;
 349
 350         msg_Dbg( obj, "Track %i offset: %i", i, p_sectors[i] + 150 );
 351     }
 352
 353     msg_Dbg( obj, "Total length: %i", (int)(i_length/1000000) );
 354     cddb_disc_set_length( p_disc, (int)(i_length/1000000) );
 355
 356     if( !cddb_disc_calc_discid( p_disc ) )
 357     {
 358         msg_Err( obj, "CDDB disc ID calculation failed" );
 359         goto error;
 360     }
 361
 362     const int i_matches = cddb_query( p_cddb, p_disc );
 363     if( i_matches < 0 )
 364     {
 365         msg_Warn( obj, "CDDB error: %s", cddb_error_str(errno) );
 366         goto error;
 367     }
 368     else if( i_matches == 0 )
 369     {
 370         msg_Dbg( obj, "Couldn't find any matches in CDDB." );
 371         goto error;
 372     }
 373     else if( i_matches > 1 )
 374         msg_Warn( obj, "found %d matches in CDDB. Using first one.", i_matches );
 375
 376     cddb_read( p_cddb, p_disc );
 377
 378     cddb_destroy( p_cddb);
 379     return p_disc;
 380
 381 error:
 382     if( p_disc )
 383         cddb_disc_destroy( p_disc );
 384     cddb_destroy( p_cddb );
 385     return NULL;
 386 }
 387 #endif /* HAVE_LIBCDDB */
 388
 389 static void AccessGetMeta(stream_t *access, vlc_meta_t *meta)
 390 {
 391     access_sys_t *sys = access->p_sys;
 392
 393     vlc_meta_SetTitle(meta, "Audio CD");
 394
 395     /* Retrieve CD-TEXT information */
 396     if (sys->cdtextc > 0 && sys->cdtextv[0] != NULL)
 397         vlc_meta_Merge(meta, sys->cdtextv[0]);
 398
 399 /* Return true if the given string is not NULL and not empty */
 400 #define NONEMPTY( psz ) ( (psz) && *(psz) )
 401 /* If the given string is NULL or empty, fill it by the return value of 'code' */
 402 #define ON_EMPTY( psz, code ) do { if( !NONEMPTY( psz) ) { (psz) = code; } } while(0)
 403
 404     /* Retrieve CDDB information (preferred over CD-TEXT) */
 405 #ifdef HAVE_LIBCDDB
 406     if (sys->cddb != NULL)
 407     {
 408         const char *str = cddb_disc_get_title(sys->cddb);
 409         if (NONEMPTY(str))
 410             vlc_meta_SetTitle(meta, str);
 411
 412         str = cddb_disc_get_genre(sys->cddb);
 413         if (NONEMPTY(str))
 414             vlc_meta_SetGenre(meta, str);
 415
 416         const unsigned year = cddb_disc_get_year(sys->cddb);
 417         if (year != 0)
 418         {
 419             char yearbuf[5];
 420
 421             snprintf(yearbuf, sizeof (yearbuf), "%u", year);
 422             vlc_meta_SetDate(meta, yearbuf);
 423         }
 424
 425         /* Set artist only if identical across tracks */
 426         str = cddb_disc_get_artist(sys->cddb);
 427         if (NONEMPTY(str))
 428         {
 429             for (int i = 0; i < sys->titles; i++)
 430             {
 431                 cddb_track_t *t = cddb_disc_get_track(sys->cddb, i);
 432                 if (t == NULL)
 433                     continue;
 434
 435                 const char *track_artist = cddb_track_get_artist(t);
 436                 if (NONEMPTY(track_artist))
 437                 {
 438                     if (str == NULL)
 439                         str = track_artist;
 440                     else
 441                     if (strcmp(str, track_artist))
 442                     {
 443                         str = NULL;
 444                         break;
 445                     }
 446                 }
 447             }
 448         }
 449     }
 450 #endif
 451 }
 452
 453 static int ReadDir(stream_t *access, input_item_node_t *node)
 454 {
 455     access_sys_t *sys = access->p_sys;
 456
 457     /* Build title table */
 458     for (int i = 0; i < sys->titles; i++)
 459     {
 460         msg_Dbg(access, "track[%d] start=%d", i, sys->p_sectors[i]);
 461
 462         /* Initial/default name */
 463         char *name;
 464
 465         if (unlikely(asprintf(&name, _("Audio CD - Track %02i"), i + 1) == -1))
 466             name = NULL;
 467
 468         /* Create playlist items */
 469         const mtime_t duration =
 470             (mtime_t)(sys->p_sectors[i + 1] - sys->p_sectors[i])
 471             * CDDA_DATA_SIZE * CLOCK_FREQ / 44100 / 2 / 2;
 472
 473         input_item_t *item = input_item_NewDisc(access->psz_url,
 474                                                 (name != NULL) ? name :
 475                                                 access->psz_url, duration);
 476         free(name);
 477
 478         if (unlikely(item == NULL))
 479             continue;
 480
 481         char *opt;
 482         if (likely(asprintf(&opt, "cdda-track=%i", i + 1) != -1))
 483         {
 484             input_item_AddOption(item, opt, VLC_INPUT_OPTION_TRUSTED);
 485             free(opt);
 486         }
 487
 488         if (likely(asprintf(&opt, "cdda-first-sector=%i",
 489                             sys->p_sectors[i]) != -1))
 490         {
 491             input_item_AddOption(item, opt, VLC_INPUT_OPTION_TRUSTED);
 492             free(opt);
 493         }
 494
 495         if (likely(asprintf(&opt, "cdda-last-sector=%i",
 496                             sys->p_sectors[i + 1]) != -1))
 497         {
 498             input_item_AddOption(item, opt, VLC_INPUT_OPTION_TRUSTED);
 499             free(opt);
 500         }
 501
 502         const char *title = NULL;
 503         const char *artist = NULL;
 504         const char *album = NULL;
 505         const char *genre = NULL;
 506         const char *description = NULL;
 507         int year = 0;
 508
 509 #ifdef HAVE_LIBCDDB
 510         if (sys->cddb != NULL)
 511         {
 512             cddb_track_t *t = cddb_disc_get_track(sys->cddb, i);
 513             if (t != NULL)
 514             {
 515                 title = cddb_track_get_title(t);
 516                 artist = cddb_track_get_artist(t);
 517             }
 518
 519             ON_EMPTY(artist, cddb_disc_get_artist(sys->cddb));
 520             album = cddb_disc_get_title(sys->cddb);
 521             genre = cddb_disc_get_genre(sys->cddb);
 522             year = cddb_disc_get_year(sys->cddb);
 523         }
 524 #endif
 525         const vlc_meta_t *m;
 526
 527         if (sys->cdtextc > 0 && (m = sys->cdtextv[0]) != NULL)
 528         {
 529             ON_EMPTY(artist, vlc_meta_Get(m, vlc_meta_Artist));
 530             ON_EMPTY(album,  vlc_meta_Get(m, vlc_meta_Album));
 531             ON_EMPTY(genre,  vlc_meta_Get(m, vlc_meta_Genre));
 532             description =    vlc_meta_Get(m, vlc_meta_Description);
 533         }
 534
 535         if (i + 1 < sys->cdtextc && (m = sys->cdtextv[i + 1]) != NULL)
 536         {
 537             ON_EMPTY(title,       vlc_meta_Get(m, vlc_meta_Title));
 538             ON_EMPTY(artist,      vlc_meta_Get(m, vlc_meta_Artist));
 539             ON_EMPTY(genre,       vlc_meta_Get(m, vlc_meta_Genre));
 540             ON_EMPTY(description, vlc_meta_Get(m, vlc_meta_Description));
 541         }
 542
 543         if (NONEMPTY(title))
 544         {
 545             input_item_SetName(item, title);
 546             input_item_SetTitle(item, title);
 547         }
 548
 549         if (NONEMPTY(artist))
 550             input_item_SetArtist(item, artist);
 551
 552         if (NONEMPTY(genre))
 553             input_item_SetGenre(item, genre);
 554
 555         if (NONEMPTY(description))
 556             input_item_SetDescription(item, description);
 557
 558         if (NONEMPTY(album))
 559             input_item_SetAlbum(item, album);
 560
 561         if (year != 0)
 562         {
 563             char yearbuf[5];
 564
 565             snprintf(yearbuf, sizeof (yearbuf), "%u", year);
 566             input_item_SetDate(item, yearbuf);
 567         }
 568
 569         char num[4];
 570         snprintf(num, sizeof (num), "%d", i + 1);
 571         input_item_SetTrackNum(item, num);
 572
 573         input_item_node_AppendItem(node, item);
 574         input_item_Release(item);
 575     }
 576 #undef ON_EMPTY
 577 #undef NONEMPTY
 578     return VLC_SUCCESS;
 579 }
 580
 581 static int AccessControl(stream_t *access, int query, va_list args)
 582 {
 583     if (query == STREAM_GET_META)
 584     {
 585         AccessGetMeta(access, va_arg(args, vlc_meta_t *));
 586         return VLC_SUCCESS;
 587     }
 588     return access_vaDirectoryControlHelper(access, query, args);
 589 }
 590
 591 static int AccessOpen(vlc_object_t *obj, vcddev_t *dev)
 592 {
 593     stream_t *access = (stream_t *)obj;
 594     /* Only whole discs here */
 595     access_sys_t *sys = vlc_obj_malloc(obj, sizeof (*sys));
 596     if (unlikely(sys == NULL))
 597     {
 598         ioctl_Close(obj, dev);
 599         return VLC_ENOMEM;
 600     }
 601
 602     sys->vcddev = dev;
 603     sys->p_sectors = NULL;
 604
 605     sys->titles = ioctl_GetTracksMap(obj, dev, &sys->p_sectors);
 606     if (sys->titles < 0)
 607     {
 608         msg_Err(obj, "cannot count tracks");
 609         goto error;
 610     }
 611
 612     if (sys->titles == 0)
 613     {
 614         msg_Err(obj, "no audio tracks found");
 615         goto error;
 616     }
 617
 618 #ifdef HAVE_LIBCDDB
 619     msg_Dbg(obj, "retrieving metadata with CDDB");
 620
 621     sys->cddb = GetCDDBInfo(obj, sys->titles, sys->p_sectors);
 622     if (sys->cddb != NULL)
 623         msg_Dbg(obj, "disc ID: 0x%08x", cddb_disc_get_discid(sys->cddb));
 624     else
 625         msg_Dbg(obj, "CDDB failure");
 626 #endif
 627
 628     if (ioctl_GetCdText(obj, dev, &sys->cdtextv, &sys->cdtextc))
 629     {
 630         msg_Dbg(obj, "CD-TEXT information missing");
 631         sys->cdtextv = NULL;
 632         sys->cdtextc = 0;
 633     }
 634
 635     access->p_sys = sys;
 636     access->pf_read = NULL;
 637     access->pf_block = NULL;
 638     access->pf_readdir = ReadDir;
 639     access->pf_seek = NULL;
 640     access->pf_control = AccessControl;
 641     return VLC_SUCCESS;
 642
 643 error:
 644     free(sys->p_sectors);
 645     ioctl_Close(obj, dev);
 646     return VLC_EGENERIC;
 647 }
 648
 649 static void AccessClose(access_sys_t *sys)
 650 {
 651     for (int i = 0; i < sys->cdtextc; i++)
 652     {
 653         vlc_meta_t *meta = sys->cdtextv[i];
 654         if (meta != NULL)
 655             vlc_meta_Delete(meta);
 656     }
 657     free(sys->cdtextv);
 658
 659 #ifdef HAVE_LIBCDDB
 660     if (sys->cddb != NULL)
 661         cddb_disc_destroy(sys->cddb);
 662 #endif
 663
 664     free(sys->p_sectors);
 665 }
 666
 667 static int Open(vlc_object_t *obj)
 668 {
 669     stream_t *stream = (stream_t *)obj;
 670     unsigned track;
 671
 672     vcddev_t *dev = DiscOpen(obj, stream->psz_location, stream->psz_filepath,
 673                              &track);
 674     if (dev == NULL)
 675         return VLC_EGENERIC;
 676
 677     if (track == 0)
 678         return AccessOpen(obj, dev);
 679     else
 680         return DemuxOpen(obj, dev, track);
 681 }
 682
 683 static void Close(vlc_object_t *obj)
 684 {
 685     stream_t *stream = (stream_t *)obj;
 686     void *sys = stream->p_sys;
 687
 688     if (stream->pf_readdir != NULL)
 689         AccessClose(sys);
 690
 691     static_assert(offsetof(demux_sys_t, vcddev) == 0, "Invalid cast");
 692     static_assert(offsetof(access_sys_t, vcddev) == 0, "Invalid cast");
 693     ioctl_Close(obj, *(vcddev_t **)sys);
 694 }
 695
 696 /*****************************************************************************
 697  * Module descriptior
 698  *****************************************************************************/
 699 #define CDAUDIO_DEV_TEXT N_("Audio CD device")
 700 #if defined( _WIN32 ) || defined( __OS2__ )
 701 # define CDAUDIO_DEV_LONGTEXT N_( \
 702     "This is the default Audio CD drive (or file) to use. Don't forget the " \
 703     "colon after the drive letter (e.g. D:)")
 704 # define CD_DEVICE      "D:"
 705 #else
 706 # define CDAUDIO_DEV_LONGTEXT N_( \
 707     "This is the default Audio CD device to use." )
 708 # if defined(__OpenBSD__)
 709 #  define CD_DEVICE      "/dev/cd0c"
 710 # elif defined(__linux__)
 711 #  define CD_DEVICE      "/dev/sr0"
 712 # else
 713 #  define CD_DEVICE      "/dev/cdrom"
 714 # endif
 715 #endif
 716
 717 vlc_module_begin ()
 718     set_shortname( N_("Audio CD") )
 719     set_description( N_("Audio CD input") )
 720     set_capability( "access", 0 )
 721     set_category( CAT_INPUT )
 722     set_subcategory( SUBCAT_INPUT_ACCESS )
 723     set_callbacks(Open, Close)
 724
 725     add_loadfile("cd-audio", CD_DEVICE, CDAUDIO_DEV_TEXT, CDAUDIO_DEV_LONGTEXT)
 726
 727     add_usage_hint( N_("[cdda:][device][@[track]]") )
 728     add_integer( "cdda-track", 0 , NULL, NULL, true )
 729         change_volatile ()
 730     add_integer( "cdda-first-sector", -1, NULL, NULL, true )
 731         change_volatile ()
 732     add_integer( "cdda-last-sector", -1, NULL, NULL, true )
 733         change_volatile ()
 734
 735 #ifdef HAVE_LIBCDDB
 736     add_string( "cddb-server", "freedb.videolan.org", N_( "CDDB Server" ),
 737             N_( "Address of the CDDB server to use." ), true )
 738     add_integer( "cddb-port", 80, N_( "CDDB port" ),
 739             N_( "CDDB Server port to use." ), true )
 740         change_integer_range( 1, 65535 )
 741 #endif
 742
 743     add_shortcut( "cdda", "cddasimple" )
 744 vlc_module_end ()