modules/access/cdda.c

   1 /*****************************************************************************
   2  * cdda.c : CD digital audio input module for vlc
   3  *****************************************************************************
   4  * Copyright (C) 2000, 2003-2006, 2008-2009 the VideoLAN team
   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
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 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 General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /**
  26  * Todo:
  27  *   - Improve CDDB support (non-blocking, cache, ...)
  28  *   - Fix tracknumber in MRL
  29  */
  30
  31 /*****************************************************************************
  32  * Preamble
  33  *****************************************************************************/
  34
  35 #ifdef HAVE_CONFIG_H
  36 # include "config.h"
  37 #endif
  38 #include <assert.h>
  39
  40 #include <vlc_common.h>
  41 #include <vlc_plugin.h>
  42 #include <vlc_input.h>
  43 #include <vlc_access.h>
  44 #include <vlc_meta.h>
  45 #include <vlc_charset.h> /* ToLocaleDup */
  46
  47 #include <vlc_codecs.h> /* For WAVEHEADER */
  48 #include "vcd/cdrom.h"  /* For CDDA_DATA_SIZE */
  49
  50 #ifdef HAVE_LIBCDDB
  51  #include <cddb/cddb.h>
  52  #include <errno.h>
  53 #endif
  54
  55 /*****************************************************************************
  56  * Module descriptior
  57  *****************************************************************************/
  58 static int  Open ( vlc_object_t * );
  59 static void Close( vlc_object_t * );
  60
  61 #define CACHING_TEXT N_("Caching value in ms")
  62 #define CACHING_LONGTEXT N_( \
  63     "Default caching value for Audio CDs. This " \
  64     "value should be set in milliseconds." )
  65
  66 vlc_module_begin ()
  67     set_shortname( N_("Audio CD") )
  68     set_description( N_("Audio CD input") )
  69     set_capability( "access", 10 )
  70     set_category( CAT_INPUT )
  71     set_subcategory( SUBCAT_INPUT_ACCESS )
  72     set_callbacks( Open, Close )
  73
  74     add_usage_hint( N_("[cdda:][device][@[track]]") )
  75     add_integer( "cdda-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT,
  76                  CACHING_LONGTEXT, true )
  77         change_safe()
  78
  79     add_integer( "cdda-track", 0 , NULL, NULL, NULL, true )
  80         change_volatile ()
  81     add_integer( "cdda-first-sector", -1, NULL, NULL, NULL, true )
  82         change_volatile ()
  83     add_integer( "cdda-last-sector", -1, NULL, NULL, NULL, true )
  84         change_volatile ()
  85
  86 #ifdef HAVE_LIBCDDB
  87     add_string( "cddb-server", "freedb.freedb.org", N_( "CDDB Server" ),
  88             N_( "Address of the CDDB server to use." ), true )
  89     add_integer( "cddb-port", 8880, NULL, N_( "CDDB port" ),
  90             N_( "CDDB Server port to use." ), true )
  91 #endif
  92
  93     add_shortcut( "cdda", "cddasimple" )
  94 vlc_module_end ()
  95
  96
  97 /* how many blocks VCDRead will read in each loop */
  98 #define CDDA_BLOCKS_ONCE 20
  99 #define CDDA_DATA_ONCE   (CDDA_BLOCKS_ONCE * CDDA_DATA_SIZE)
 100
 101 /*****************************************************************************
 102  * Access: local prototypes
 103  *****************************************************************************/
 104 struct access_sys_t
 105 {
 106     vcddev_t    *vcddev;                            /* vcd device descriptor */
 107
 108     /* Current position */
 109     int         i_sector;                                  /* Current Sector */
 110     int        *p_sectors;                                  /* Track sectors */
 111
 112     /* Wave header for the output data */
 113     WAVEHEADER  waveheader;
 114     bool        b_header;
 115
 116     int         i_track;
 117     int         i_first_sector;
 118     int         i_last_sector;
 119 };
 120
 121 static block_t *Block( access_t * );
 122 static int      Seek( access_t *, uint64_t );
 123 static int      Control( access_t *, int, va_list );
 124
 125 static int GetTracks( access_t *p_access, input_item_t *p_current );
 126
 127 #ifdef HAVE_LIBCDDB
 128 static cddb_disc_t *GetCDDBInfo( access_t *p_access, int i_titles, int *p_sectors );
 129 #endif
 130
 131 /*****************************************************************************
 132  * Open: open cdda
 133  *****************************************************************************/
 134 static int Open( vlc_object_t *p_this )
 135 {
 136     access_t     *p_access = (access_t*)p_this;
 137     access_sys_t *p_sys;
 138     vcddev_t     *vcddev;
 139     char         *psz_name;
 140
 141     if( !p_access->psz_filepath || !*p_access->psz_filepath )
 142     {
 143         /* Only when selected */
 144         if( !p_access->psz_access || !*p_access->psz_access )
 145             return VLC_EGENERIC;
 146
 147         psz_name = var_InheritString( p_this, "cd-audio" );
 148         if( !psz_name )
 149             return VLC_EGENERIC;
 150     }
 151     else psz_name = ToLocaleDup( p_access->psz_filepath );
 152
 153 #ifdef WIN32
 154     if( psz_name[0] && psz_name[1] == ':' &&
 155         psz_name[2] == '\\' && psz_name[3] == '\0' ) psz_name[2] = '\0';
 156 #endif
 157
 158     /* Open CDDA */
 159     if( (vcddev = ioctl_Open( VLC_OBJECT(p_access), psz_name ) ) == NULL )
 160     {
 161         msg_Warn( p_access, "could not open %s", psz_name );
 162         free( psz_name );
 163         return VLC_EGENERIC;
 164     }
 165     free( psz_name );
 166
 167     /* Set up p_access */
 168     STANDARD_BLOCK_ACCESS_INIT
 169     p_sys->vcddev = vcddev;
 170
 171    /* Do we play a single track ? */
 172    p_sys->i_track = var_InheritInteger( p_access, "cdda-track" ) - 1;
 173
 174    if( p_sys->i_track < 0 )
 175    {
 176         /* We only do separate items if the whole disc is requested */
 177         input_thread_t *p_input = access_GetParentInput( p_access );
 178
 179         int i_ret = -1;
 180         if( p_input )
 181         {
 182             input_item_t *p_current = input_GetItem( p_input );
 183             if( p_current )
 184                 i_ret = GetTracks( p_access, p_current );
 185
 186             vlc_object_release( p_input );
 187         }
 188         if( i_ret < 0 )
 189             goto error;
 190     }
 191     else
 192     {
 193         /* Build a WAV header for the output data */
 194         memset( &p_sys->waveheader, 0, sizeof(WAVEHEADER) );
 195         SetWLE( &p_sys->waveheader.Format, 1 ); /*WAVE_FORMAT_PCM*/
 196         SetWLE( &p_sys->waveheader.BitsPerSample, 16);
 197         p_sys->waveheader.MainChunkID = VLC_FOURCC('R', 'I', 'F', 'F');
 198         p_sys->waveheader.Length = 0;               /* we just don't know */
 199         p_sys->waveheader.ChunkTypeID = VLC_FOURCC('W', 'A', 'V', 'E');
 200         p_sys->waveheader.SubChunkID = VLC_FOURCC('f', 'm', 't', ' ');
 201         SetDWLE( &p_sys->waveheader.SubChunkLength, 16);
 202         SetWLE( &p_sys->waveheader.Modus, 2);
 203         SetDWLE( &p_sys->waveheader.SampleFreq, 44100);
 204         SetWLE( &p_sys->waveheader.BytesPerSample,
 205                     2 /*Modus*/ * 16 /*BitsPerSample*/ / 8 );
 206         SetDWLE( &p_sys->waveheader.BytesPerSec,
 207                     2*16/8 /*BytesPerSample*/ * 44100 /*SampleFreq*/ );
 208         p_sys->waveheader.DataChunkID = VLC_FOURCC('d', 'a', 't', 'a');
 209         p_sys->waveheader.DataLength = 0;           /* we just don't know */
 210
 211         p_sys->i_first_sector = var_InheritInteger( p_access,
 212                                                     "cdda-first-sector" );
 213         p_sys->i_last_sector  = var_InheritInteger( p_access,
 214                                                     "cdda-last-sector" );
 215         /* Tracknumber in MRL */
 216         if( p_sys->i_first_sector < 0 || p_sys->i_last_sector < 0 )
 217         {
 218             const int i_titles = ioctl_GetTracksMap( VLC_OBJECT(p_access),
 219                                                      p_sys->vcddev, &p_sys->p_sectors );
 220             if( p_sys->i_track >= i_titles )
 221             {
 222                 msg_Err( p_access, "invalid track number" );
 223                 goto error;
 224             }
 225             p_sys->i_first_sector = p_sys->p_sectors[p_sys->i_track];
 226             p_sys->i_last_sector = p_sys->p_sectors[p_sys->i_track+1];
 227         }
 228
 229         p_sys->i_sector = p_sys->i_first_sector;
 230         p_access->info.i_size = (p_sys->i_last_sector - p_sys->i_first_sector)
 231                                      * (int64_t)CDDA_DATA_SIZE;
 232     }
 233
 234     /* PTS delay */
 235     var_Create( p_access, "cdda-caching", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
 236
 237     return VLC_SUCCESS;
 238
 239 error:
 240     free( p_sys->p_sectors );
 241     ioctl_Close( VLC_OBJECT(p_access), p_sys->vcddev );
 242     free( p_sys );
 243     return VLC_EGENERIC;
 244 }
 245
 246 /*****************************************************************************
 247  * Close: closes cdda
 248  *****************************************************************************/
 249 static void Close( vlc_object_t *p_this )
 250 {
 251     access_t     *p_access = (access_t *)p_this;
 252     access_sys_t *p_sys = p_access->p_sys;
 253
 254     free( p_sys->p_sectors );
 255     ioctl_Close( p_this, p_sys->vcddev );
 256     free( p_sys );
 257 }
 258
 259 /*****************************************************************************
 260  * Block: read data (CDDA_DATA_ONCE)
 261  *****************************************************************************/
 262 static block_t *Block( access_t *p_access )
 263 {
 264     access_sys_t *p_sys = p_access->p_sys;
 265     int i_blocks = CDDA_BLOCKS_ONCE;
 266     block_t *p_block;
 267
 268     if( p_sys->i_track < 0 ) p_access->info.b_eof = true;
 269
 270     /* Check end of file */
 271     if( p_access->info.b_eof ) return NULL;
 272
 273     if( !p_sys->b_header )
 274     {
 275         /* Return only the header */
 276         p_block = block_New( p_access, sizeof( WAVEHEADER ) );
 277         memcpy( p_block->p_buffer, &p_sys->waveheader, sizeof(WAVEHEADER) );
 278         p_sys->b_header = true;
 279         return p_block;
 280     }
 281
 282     if( p_sys->i_sector >= p_sys->i_last_sector )
 283     {
 284         p_access->info.b_eof = true;
 285         return NULL;
 286     }
 287
 288     /* Don't read too far */
 289     if( p_sys->i_sector + i_blocks >= p_sys->i_last_sector )
 290         i_blocks = p_sys->i_last_sector - p_sys->i_sector;
 291
 292     /* Do the actual reading */
 293     if( !( p_block = block_New( p_access, i_blocks * CDDA_DATA_SIZE ) ) )
 294     {
 295         msg_Err( p_access, "cannot get a new block of size: %i",
 296                  i_blocks * CDDA_DATA_SIZE );
 297         return NULL;
 298     }
 299
 300     if( ioctl_ReadSectors( VLC_OBJECT(p_access), p_sys->vcddev,
 301             p_sys->i_sector, p_block->p_buffer, i_blocks, CDDA_TYPE ) < 0 )
 302     {
 303         msg_Err( p_access, "cannot read sector %i", p_sys->i_sector );
 304         block_Release( p_block );
 305
 306         /* Try to skip one sector (in case of bad sectors) */
 307         p_sys->i_sector++;
 308         p_access->info.i_pos += CDDA_DATA_SIZE;
 309         return NULL;
 310     }
 311
 312     /* Update a few values */
 313     p_sys->i_sector += i_blocks;
 314     p_access->info.i_pos += p_block->i_buffer;
 315
 316     return p_block;
 317 }
 318
 319 /****************************************************************************
 320  * Seek
 321  ****************************************************************************/
 322 static int Seek( access_t *p_access, uint64_t i_pos )
 323 {
 324     access_sys_t *p_sys = p_access->p_sys;
 325
 326     /* Next sector to read */
 327     p_sys->i_sector = p_sys->i_first_sector + i_pos / CDDA_DATA_SIZE;
 328     assert( p_sys->i_sector >= 0 );
 329     p_access->info.i_pos = i_pos;
 330
 331     return VLC_SUCCESS;
 332 }
 333
 334 /*****************************************************************************
 335  * Control:
 336  *****************************************************************************/
 337 static int Control( access_t *p_access, int i_query, va_list args )
 338 {
 339     switch( i_query )
 340     {
 341         case ACCESS_CAN_SEEK:
 342         case ACCESS_CAN_FASTSEEK:
 343         case ACCESS_CAN_PAUSE:
 344         case ACCESS_CAN_CONTROL_PACE:
 345             *va_arg( args, bool* ) = true;
 346             break;
 347
 348         case ACCESS_GET_PTS_DELAY:
 349             *va_arg( args, int64_t * ) =
 350                    var_GetInteger( p_access, "cdda-caching" ) * INT64_C(1000);
 351             break;
 352
 353         case ACCESS_SET_PAUSE_STATE:
 354             break;
 355
 356         case ACCESS_GET_TITLE_INFO:
 357         case ACCESS_SET_TITLE:
 358         case ACCESS_GET_META:
 359         case ACCESS_SET_SEEKPOINT:
 360         case ACCESS_SET_PRIVATE_ID_STATE:
 361         case ACCESS_GET_CONTENT_TYPE:
 362             return VLC_EGENERIC;
 363
 364         default:
 365             msg_Warn( p_access, "unimplemented query in control" );
 366             return VLC_EGENERIC;
 367     }
 368     return VLC_SUCCESS;
 369 }
 370
 371 static int GetTracks( access_t *p_access, input_item_t *p_current )
 372 {
 373     access_sys_t *p_sys = p_access->p_sys;
 374
 375     const int i_titles = ioctl_GetTracksMap( VLC_OBJECT(p_access),
 376                                              p_sys->vcddev, &p_sys->p_sectors );
 377     if( i_titles <= 0 )
 378     {
 379         if( i_titles < 0 )
 380             msg_Err( p_access, "unable to count tracks" );
 381         else if( i_titles <= 0 )
 382             msg_Err( p_access, "no audio tracks found" );
 383         return VLC_EGENERIC;;
 384     }
 385
 386     /* */
 387     input_item_SetName( p_current, "Audio CD" );
 388
 389     const char *psz_album = NULL;
 390     const char *psz_year = NULL;
 391     const char *psz_genre = NULL;
 392     const char *psz_artist = NULL;
 393     const char *psz_description = NULL;
 394
 395 /* Return true if the given string is not NULL and not empty */
 396 #define NONEMPTY( psz ) ( (psz) && *(psz) )
 397 /* If the given string is NULL or empty, fill it by the return value of 'code' */
 398 #define ON_EMPTY( psz, code ) do { if( !NONEMPTY( psz) ) { (psz) = code; } } while(0)
 399
 400     /* Retreive CDDB information */
 401 #ifdef HAVE_LIBCDDB
 402     char psz_year_buffer[4+1];
 403     msg_Dbg( p_access, "fetching infos with CDDB" );
 404     cddb_disc_t *p_disc = GetCDDBInfo( p_access, i_titles, p_sys->p_sectors );
 405     if( p_disc )
 406     {
 407         psz_album = cddb_disc_get_title( p_disc );
 408         psz_genre = cddb_disc_get_genre( p_disc );
 409
 410         /* */
 411         const unsigned i_year = cddb_disc_get_year( p_disc );
 412         if( i_year > 0 )
 413         {
 414             psz_year = psz_year_buffer;
 415             snprintf( psz_year_buffer, sizeof(psz_year_buffer), "%u", i_year );
 416         }
 417
 418         /* Set artist only if unique */
 419         for( int i = 0; i < i_titles; i++ )
 420         {
 421             cddb_track_t *t = cddb_disc_get_track( p_disc, i );
 422             if( !t )
 423                 continue;
 424             const char *psz_track_artist = cddb_track_get_artist( t );
 425             if( psz_artist && psz_track_artist &&
 426                 strcmp( psz_artist, psz_track_artist ) )
 427             {
 428                 psz_artist = NULL;
 429                 break;
 430             }
 431             psz_artist = psz_track_artist;
 432         }
 433     }
 434 #endif
 435
 436     /* CD-Text */
 437     vlc_meta_t **pp_cd_text;
 438     int        i_cd_text;
 439
 440     if( ioctl_GetCdText( VLC_OBJECT(p_access), p_sys->vcddev, &pp_cd_text, &i_cd_text ) )
 441     {
 442         msg_Dbg( p_access, "CD-TEXT information missing" );
 443         i_cd_text = 0;
 444         pp_cd_text = NULL;
 445     }
 446
 447     /* Retrieve CD-TEXT information but prefer CDDB */
 448     if( i_cd_text > 0 && pp_cd_text[0] )
 449     {
 450         const vlc_meta_t *p_disc = pp_cd_text[0];
 451         ON_EMPTY( psz_album,       vlc_meta_Get( p_disc, vlc_meta_Album ) );
 452         ON_EMPTY( psz_genre,       vlc_meta_Get( p_disc, vlc_meta_Genre ) );
 453         ON_EMPTY( psz_artist,      vlc_meta_Get( p_disc, vlc_meta_Artist ) );
 454         ON_EMPTY( psz_description, vlc_meta_Get( p_disc, vlc_meta_Description ) );
 455     }
 456
 457     if( NONEMPTY( psz_album ) )
 458     {
 459         input_item_SetName( p_current, psz_album );
 460         input_item_SetAlbum( p_current, psz_album );
 461     }
 462
 463     if( NONEMPTY( psz_genre ) )
 464         input_item_SetGenre( p_current, psz_genre );
 465
 466     if( NONEMPTY( psz_artist ) )
 467         input_item_SetArtist( p_current, psz_artist );
 468
 469     if( NONEMPTY( psz_year ) )
 470         input_item_SetDate( p_current, psz_year );
 471
 472     if( NONEMPTY( psz_description ) )
 473         input_item_SetDescription( p_current, psz_description );
 474
 475     const mtime_t i_duration = (int64_t)( p_sys->p_sectors[i_titles] - p_sys->p_sectors[0] ) *
 476                                CDDA_DATA_SIZE * 1000000 / 44100 / 2 / 2;
 477     input_item_SetDuration( p_current, i_duration );
 478
 479     input_item_node_t *p_root = input_item_node_Create( p_current );
 480
 481     /* Build title table */
 482     for( int i = 0; i < i_titles; i++ )
 483     {
 484         input_item_t *p_input_item;
 485
 486         char *psz_uri, *psz_opt, *psz_first, *psz_last;
 487         char *psz_name;
 488
 489         msg_Dbg( p_access, "track[%d] start=%d", i, p_sys->p_sectors[i] );
 490
 491         /* */
 492         if( asprintf( &psz_uri, "cdda://%s", p_access->psz_location ) == -1 )
 493             psz_uri = NULL;
 494         if( asprintf( &psz_opt, "cdda-track=%i", i+1 ) == -1 )
 495             psz_opt = NULL;
 496         if( asprintf( &psz_first, "cdda-first-sector=%i",p_sys->p_sectors[i] ) == -1 )
 497             psz_first = NULL;
 498         if( asprintf( &psz_last, "cdda-last-sector=%i", p_sys->p_sectors[i+1] ) == -1 )
 499             psz_last = NULL;
 500
 501         /* Define a "default name" */
 502         if( asprintf( &psz_name, _("Audio CD - Track %02i"), (i+1) ) == -1 )
 503             psz_name = NULL;
 504
 505         /* Create playlist items */
 506         const mtime_t i_duration = (int64_t)( p_sys->p_sectors[i+1] - p_sys->p_sectors[i] ) *
 507                                    CDDA_DATA_SIZE * 1000000 / 44100 / 2 / 2;
 508         p_input_item = input_item_NewWithType( VLC_OBJECT( p_access ),
 509                                               psz_uri, psz_name, 0, NULL, 0, i_duration,
 510                                               ITEM_TYPE_DISC );
 511         input_item_CopyOptions( p_current, p_input_item );
 512         input_item_AddOption( p_input_item, psz_first, VLC_INPUT_OPTION_TRUSTED );
 513         input_item_AddOption( p_input_item, psz_last, VLC_INPUT_OPTION_TRUSTED );
 514         input_item_AddOption( p_input_item, psz_opt, VLC_INPUT_OPTION_TRUSTED );
 515
 516         const char *psz_track_title = NULL;
 517         const char *psz_track_artist = NULL;
 518         const char *psz_track_genre = NULL;
 519         const char *psz_track_description = NULL;
 520
 521 #ifdef HAVE_LIBCDDB
 522         /* Retreive CDDB information */
 523         if( p_disc )
 524         {
 525             cddb_track_t *t = cddb_disc_get_track( p_disc, i );
 526             if( t != NULL )
 527             {
 528                 psz_track_title = cddb_track_get_title( t );
 529                 psz_track_artist = cddb_track_get_artist( t );
 530             }
 531         }
 532 #endif
 533
 534         /* Retreive CD-TEXT information but prefer CDDB */
 535         if( i+1 < i_cd_text && pp_cd_text[i+1] )
 536         {
 537             const vlc_meta_t *t = pp_cd_text[i+1];
 538
 539             ON_EMPTY( psz_track_title,       vlc_meta_Get( t, vlc_meta_Title ) );
 540             ON_EMPTY( psz_track_artist,      vlc_meta_Get( t, vlc_meta_Artist ) );
 541             ON_EMPTY( psz_track_genre,       vlc_meta_Get( t, vlc_meta_Genre ) );
 542             ON_EMPTY( psz_track_description, vlc_meta_Get( t, vlc_meta_Description ) );
 543         }
 544
 545         /* */
 546         ON_EMPTY( psz_track_artist,       psz_artist );
 547         ON_EMPTY( psz_track_genre,        psz_genre );
 548         ON_EMPTY( psz_track_description,  psz_description );
 549
 550         /* */
 551         if( NONEMPTY( psz_track_title ) )
 552         {
 553             input_item_SetName( p_input_item, psz_track_title );
 554             input_item_SetTitle( p_input_item, psz_track_title );
 555         }
 556
 557         if( NONEMPTY( psz_track_artist ) )
 558             input_item_SetArtist( p_input_item, psz_track_artist );
 559
 560         if( NONEMPTY( psz_track_genre ) )
 561             input_item_SetGenre( p_input_item, psz_track_genre );
 562
 563         if( NONEMPTY( psz_track_description ) )
 564             input_item_SetDescription( p_input_item, psz_track_description );
 565
 566         if( NONEMPTY( psz_album ) )
 567             input_item_SetAlbum( p_input_item, psz_album );
 568
 569         if( NONEMPTY( psz_year ) )
 570             input_item_SetDate( p_input_item, psz_year );
 571
 572         char psz_num[3+1];
 573         snprintf( psz_num, sizeof(psz_num), "%d", 1+i );
 574         input_item_SetTrackNum( p_input_item, psz_num );
 575
 576         input_item_node_AppendItem( p_root, p_input_item );
 577         vlc_gc_decref( p_input_item );
 578         free( psz_uri ); free( psz_opt ); free( psz_name );
 579         free( psz_first ); free( psz_last );
 580     }
 581 #undef ON_EMPTY
 582 #undef NONEMPTY
 583
 584     input_item_node_PostAndDelete( p_root );
 585
 586     /* */
 587     for( int i = 0; i < i_cd_text; i++ )
 588     {
 589         vlc_meta_t *p_meta = pp_cd_text[i];
 590         if( !p_meta )
 591             continue;
 592         vlc_meta_Delete( p_meta );
 593     }
 594     free( pp_cd_text );
 595
 596 #ifdef HAVE_LIBCDDB
 597     if( p_disc )
 598         cddb_disc_destroy( p_disc );
 599 #endif
 600     return VLC_SUCCESS;
 601 }
 602
 603 #ifdef HAVE_LIBCDDB
 604 static cddb_disc_t *GetCDDBInfo( access_t *p_access, int i_titles, int *p_sectors )
 605 {
 606     if( var_InheritInteger( p_access, "album-art" ) == ALBUM_ART_WHEN_ASKED )
 607         return NULL;
 608
 609     /* */
 610     cddb_conn_t *p_cddb = cddb_new();
 611     if( !p_cddb )
 612     {
 613         msg_Warn( p_access, "unable to use CDDB" );
 614         return NULL;
 615     }
 616
 617     /* */
 618     char *psz_tmp = var_InheritString( p_access, "cddb-server" );
 619     if( psz_tmp )
 620     {
 621         cddb_set_server_name( p_cddb, psz_tmp );
 622         free( psz_tmp );
 623     }
 624
 625     cddb_set_server_port( p_cddb, var_InheritInteger( p_access, "cddb-port" ) );
 626
 627     cddb_set_email_address( p_cddb, "vlc@videolan.org" );
 628
 629     /// \todo
 630     cddb_cache_disable( p_cddb );
 631
 632 //    cddb_cache_set_dir( p_cddb,
 633 //                     var_InheritString( p_access,
 634 //                                    MODULE_STRING "-cddb-cachedir") );
 635
 636     cddb_set_timeout( p_cddb, 10 );
 637
 638     /// \todo
 639     cddb_http_disable( p_cddb );
 640
 641     /* */
 642     cddb_disc_t *p_disc = cddb_disc_new();
 643     if( !p_disc )
 644     {
 645         msg_Err( p_access, "unable to create CDDB disc structure." );
 646         goto error;
 647     }
 648
 649     int64_t i_length = 0;
 650     for( int i = 0; i < i_titles; i++ )
 651     {
 652         cddb_track_t *t = cddb_track_new();
 653         cddb_track_set_frame_offset( t, p_sectors[i] );
 654         cddb_disc_add_track( p_disc, t );
 655         const int64_t i_size = ( p_sectors[i+1] - p_sectors[i] ) *
 656                                (int64_t)CDDA_DATA_SIZE;
 657         i_length += INT64_C(1000000) * i_size / 44100 / 4  ;
 658     }
 659
 660     cddb_disc_set_length( p_disc, (int)(i_length/1000000) );
 661
 662     if( !cddb_disc_calc_discid( p_disc ) )
 663     {
 664         msg_Err( p_access, "CDDB disc ID calculation failed" );
 665         goto error;
 666     }
 667
 668     const int i_matches = cddb_query( p_cddb, p_disc );
 669     if( i_matches < 0 )
 670     {
 671         msg_Warn( p_access, "CDDB error: %s", cddb_error_str(errno) );
 672         goto error;
 673     }
 674     else if( i_matches == 0 )
 675     {
 676         msg_Dbg( p_access, "Couldn't find any matches in CDDB." );
 677         goto error;
 678     }
 679     else if( i_matches > 1 )
 680         msg_Warn( p_access, "found %d matches in CDDB. Using first one.", i_matches );
 681
 682     cddb_read( p_cddb, p_disc );
 683
 684     cddb_destroy( p_cddb);
 685     return p_disc;
 686
 687 error:
 688     if( p_disc )
 689         cddb_disc_destroy( p_disc );
 690     cddb_destroy( p_cddb );
 691     return NULL;
 692 }
 693 #endif /*HAVE_LIBCDDB*/
 694