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", NULL, 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_CreateGetString( p_this, "cd-audio" );
 148         if( !psz_name || !*psz_name )
 149         {
 150             free( psz_name );
 151             return VLC_EGENERIC;
 152         }
 153     }
 154     else psz_name = ToLocaleDup( p_access->psz_filepath );
 155
 156 #ifdef WIN32
 157     if( psz_name[0] && psz_name[1] == ':' &&
 158         psz_name[2] == '\\' && psz_name[3] == '\0' ) psz_name[2] = '\0';
 159 #endif
 160
 161     /* Open CDDA */
 162     if( (vcddev = ioctl_Open( VLC_OBJECT(p_access), psz_name ) ) == NULL )
 163     {
 164         msg_Warn( p_access, "could not open %s", psz_name );
 165         free( psz_name );
 166         return VLC_EGENERIC;
 167     }
 168     free( psz_name );
 169
 170     /* Set up p_access */
 171     STANDARD_BLOCK_ACCESS_INIT
 172     p_sys->vcddev = vcddev;
 173
 174    /* Do we play a single track ? */
 175    p_sys->i_track = var_CreateGetInteger( p_access, "cdda-track" ) - 1;
 176
 177    if( p_sys->i_track < 0 )
 178    {
 179         /* We only do separate items if the whole disc is requested */
 180         input_thread_t *p_input = access_GetParentInput( p_access );
 181
 182         int i_ret = -1;
 183         if( p_input )
 184         {
 185             input_item_t *p_current = input_GetItem( p_input );
 186             if( p_current )
 187                 i_ret = GetTracks( p_access, p_current );
 188
 189             vlc_object_release( p_input );
 190         }
 191         if( i_ret < 0 )
 192             goto error;
 193     }
 194     else
 195     {
 196         /* Build a WAV header for the output data */
 197         memset( &p_sys->waveheader, 0, sizeof(WAVEHEADER) );
 198         SetWLE( &p_sys->waveheader.Format, 1 ); /*WAVE_FORMAT_PCM*/
 199         SetWLE( &p_sys->waveheader.BitsPerSample, 16);
 200         p_sys->waveheader.MainChunkID = VLC_FOURCC('R', 'I', 'F', 'F');
 201         p_sys->waveheader.Length = 0;               /* we just don't know */
 202         p_sys->waveheader.ChunkTypeID = VLC_FOURCC('W', 'A', 'V', 'E');
 203         p_sys->waveheader.SubChunkID = VLC_FOURCC('f', 'm', 't', ' ');
 204         SetDWLE( &p_sys->waveheader.SubChunkLength, 16);
 205         SetWLE( &p_sys->waveheader.Modus, 2);
 206         SetDWLE( &p_sys->waveheader.SampleFreq, 44100);
 207         SetWLE( &p_sys->waveheader.BytesPerSample,
 208                     2 /*Modus*/ * 16 /*BitsPerSample*/ / 8 );
 209         SetDWLE( &p_sys->waveheader.BytesPerSec,
 210                     2*16/8 /*BytesPerSample*/ * 44100 /*SampleFreq*/ );
 211         p_sys->waveheader.DataChunkID = VLC_FOURCC('d', 'a', 't', 'a');
 212         p_sys->waveheader.DataLength = 0;           /* we just don't know */
 213
 214         p_sys->i_first_sector = var_CreateGetInteger( p_access,
 215                                                       "cdda-first-sector" );
 216         p_sys->i_last_sector  = var_CreateGetInteger( p_access,
 217                                                       "cdda-last-sector" );
 218         /* Tracknumber in MRL */
 219         if( p_sys->i_first_sector < 0 || p_sys->i_last_sector < 0 )
 220         {
 221             const int i_titles = ioctl_GetTracksMap( VLC_OBJECT(p_access),
 222                                                      p_sys->vcddev, &p_sys->p_sectors );
 223             if( p_sys->i_track >= i_titles )
 224             {
 225                 msg_Err( p_access, "invalid track number" );
 226                 goto error;
 227             }
 228             p_sys->i_first_sector = p_sys->p_sectors[p_sys->i_track];
 229             p_sys->i_last_sector = p_sys->p_sectors[p_sys->i_track+1];
 230         }
 231
 232         p_sys->i_sector = p_sys->i_first_sector;
 233         p_access->info.i_size = (p_sys->i_last_sector - p_sys->i_first_sector)
 234                                      * (int64_t)CDDA_DATA_SIZE;
 235     }
 236
 237     /* PTS delay */
 238     var_Create( p_access, "cdda-caching", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
 239
 240     return VLC_SUCCESS;
 241
 242 error:
 243     free( p_sys->p_sectors );
 244     ioctl_Close( VLC_OBJECT(p_access), p_sys->vcddev );
 245     free( p_sys );
 246     return VLC_EGENERIC;
 247 }
 248
 249 /*****************************************************************************
 250  * Close: closes cdda
 251  *****************************************************************************/
 252 static void Close( vlc_object_t *p_this )
 253 {
 254     access_t     *p_access = (access_t *)p_this;
 255     access_sys_t *p_sys = p_access->p_sys;
 256
 257     free( p_sys->p_sectors );
 258     ioctl_Close( p_this, p_sys->vcddev );
 259     free( p_sys );
 260 }
 261
 262 /*****************************************************************************
 263  * Block: read data (CDDA_DATA_ONCE)
 264  *****************************************************************************/
 265 static block_t *Block( access_t *p_access )
 266 {
 267     access_sys_t *p_sys = p_access->p_sys;
 268     int i_blocks = CDDA_BLOCKS_ONCE;
 269     block_t *p_block;
 270
 271     if( p_sys->i_track < 0 ) p_access->info.b_eof = true;
 272
 273     /* Check end of file */
 274     if( p_access->info.b_eof ) return NULL;
 275
 276     if( !p_sys->b_header )
 277     {
 278         /* Return only the header */
 279         p_block = block_New( p_access, sizeof( WAVEHEADER ) );
 280         memcpy( p_block->p_buffer, &p_sys->waveheader, sizeof(WAVEHEADER) );
 281         p_sys->b_header = true;
 282         return p_block;
 283     }
 284
 285     if( p_sys->i_sector >= p_sys->i_last_sector )
 286     {
 287         p_access->info.b_eof = true;
 288         return NULL;
 289     }
 290
 291     /* Don't read too far */
 292     if( p_sys->i_sector + i_blocks >= p_sys->i_last_sector )
 293         i_blocks = p_sys->i_last_sector - p_sys->i_sector;
 294
 295     /* Do the actual reading */
 296     if( !( p_block = block_New( p_access, i_blocks * CDDA_DATA_SIZE ) ) )
 297     {
 298         msg_Err( p_access, "cannot get a new block of size: %i",
 299                  i_blocks * CDDA_DATA_SIZE );
 300         return NULL;
 301     }
 302
 303     if( ioctl_ReadSectors( VLC_OBJECT(p_access), p_sys->vcddev,
 304             p_sys->i_sector, p_block->p_buffer, i_blocks, CDDA_TYPE ) < 0 )
 305     {
 306         msg_Err( p_access, "cannot read sector %i", p_sys->i_sector );
 307         block_Release( p_block );
 308
 309         /* Try to skip one sector (in case of bad sectors) */
 310         p_sys->i_sector++;
 311         p_access->info.i_pos += CDDA_DATA_SIZE;
 312         return NULL;
 313     }
 314
 315     /* Update a few values */
 316     p_sys->i_sector += i_blocks;
 317     p_access->info.i_pos += p_block->i_buffer;
 318
 319     return p_block;
 320 }
 321
 322 /****************************************************************************
 323  * Seek
 324  ****************************************************************************/
 325 static int Seek( access_t *p_access, uint64_t i_pos )
 326 {
 327     access_sys_t *p_sys = p_access->p_sys;
 328
 329     /* Next sector to read */
 330     p_sys->i_sector = p_sys->i_first_sector + i_pos / CDDA_DATA_SIZE;
 331     assert( p_sys->i_sector >= 0 );
 332     p_access->info.i_pos = i_pos;
 333
 334     return VLC_SUCCESS;
 335 }
 336
 337 /*****************************************************************************
 338  * Control:
 339  *****************************************************************************/
 340 static int Control( access_t *p_access, int i_query, va_list args )
 341 {
 342     switch( i_query )
 343     {
 344         case ACCESS_CAN_SEEK:
 345         case ACCESS_CAN_FASTSEEK:
 346         case ACCESS_CAN_PAUSE:
 347         case ACCESS_CAN_CONTROL_PACE:
 348             *va_arg( args, bool* ) = true;
 349             break;
 350
 351         case ACCESS_GET_PTS_DELAY:
 352             *va_arg( args, int64_t * ) =
 353                    var_GetInteger( p_access, "cdda-caching" ) * INT64_C(1000);
 354             break;
 355
 356         case ACCESS_SET_PAUSE_STATE:
 357             break;
 358
 359         case ACCESS_GET_TITLE_INFO:
 360         case ACCESS_SET_TITLE:
 361         case ACCESS_GET_META:
 362         case ACCESS_SET_SEEKPOINT:
 363         case ACCESS_SET_PRIVATE_ID_STATE:
 364         case ACCESS_GET_CONTENT_TYPE:
 365             return VLC_EGENERIC;
 366
 367         default:
 368             msg_Warn( p_access, "unimplemented query in control" );
 369             return VLC_EGENERIC;
 370     }
 371     return VLC_SUCCESS;
 372 }
 373
 374 static int GetTracks( access_t *p_access, input_item_t *p_current )
 375 {
 376     access_sys_t *p_sys = p_access->p_sys;
 377
 378     const int i_titles = ioctl_GetTracksMap( VLC_OBJECT(p_access),
 379                                              p_sys->vcddev, &p_sys->p_sectors );
 380     if( i_titles <= 0 )
 381     {
 382         if( i_titles < 0 )
 383             msg_Err( p_access, "unable to count tracks" );
 384         else if( i_titles <= 0 )
 385             msg_Err( p_access, "no audio tracks found" );
 386         return VLC_EGENERIC;;
 387     }
 388
 389     /* */
 390     input_item_SetName( p_current, "Audio CD" );
 391
 392     const char *psz_album = NULL;
 393     const char *psz_year = NULL;
 394     const char *psz_genre = NULL;
 395     const char *psz_artist = NULL;
 396     const char *psz_description = NULL;
 397
 398 /* Return true if the given string is not NULL and not empty */
 399 #define NONEMPTY( psz ) ( (psz) && *(psz) )
 400 /* If the given string is NULL or empty, fill it by the return value of 'code' */
 401 #define ON_EMPTY( psz, code ) do { if( !NONEMPTY( psz) ) { (psz) = code; } } while(0)
 402
 403     /* Retreive CDDB information */
 404 #ifdef HAVE_LIBCDDB
 405     char psz_year_buffer[4+1];
 406     msg_Dbg( p_access, "fetching infos with CDDB" );
 407     cddb_disc_t *p_disc = GetCDDBInfo( p_access, i_titles, p_sys->p_sectors );
 408     if( p_disc )
 409     {
 410         psz_album = cddb_disc_get_title( p_disc );
 411         psz_genre = cddb_disc_get_genre( p_disc );
 412
 413         /* */
 414         const unsigned i_year = cddb_disc_get_year( p_disc );
 415         if( i_year > 0 )
 416         {
 417             psz_year = psz_year_buffer;
 418             snprintf( psz_year_buffer, sizeof(psz_year_buffer), "%u", i_year );
 419         }
 420
 421         /* Set artist only if unique */
 422         for( int i = 0; i < i_titles; i++ )
 423         {
 424             cddb_track_t *t = cddb_disc_get_track( p_disc, i );
 425             if( !t )
 426                 continue;
 427             const char *psz_track_artist = cddb_track_get_artist( t );
 428             if( psz_artist && psz_track_artist &&
 429                 strcmp( psz_artist, psz_track_artist ) )
 430             {
 431                 psz_artist = NULL;
 432                 break;
 433             }
 434             psz_artist = psz_track_artist;
 435         }
 436     }
 437 #endif
 438
 439     /* CD-Text */
 440     vlc_meta_t **pp_cd_text;
 441     int        i_cd_text;
 442
 443     if( ioctl_GetCdText( VLC_OBJECT(p_access), p_sys->vcddev, &pp_cd_text, &i_cd_text ) )
 444     {
 445         msg_Dbg( p_access, "CD-TEXT information missing" );
 446         i_cd_text = 0;
 447         pp_cd_text = NULL;
 448     }
 449
 450     /* Retrieve CD-TEXT information but prefer CDDB */
 451     if( i_cd_text > 0 && pp_cd_text[0] )
 452     {
 453         const vlc_meta_t *p_disc = pp_cd_text[0];
 454         ON_EMPTY( psz_album,       vlc_meta_Get( p_disc, vlc_meta_Album ) );
 455         ON_EMPTY( psz_genre,       vlc_meta_Get( p_disc, vlc_meta_Genre ) );
 456         ON_EMPTY( psz_artist,      vlc_meta_Get( p_disc, vlc_meta_Artist ) );
 457         ON_EMPTY( psz_description, vlc_meta_Get( p_disc, vlc_meta_Description ) );
 458     }
 459
 460     if( NONEMPTY( psz_album ) )
 461     {
 462         input_item_SetName( p_current, psz_album );
 463         input_item_SetAlbum( p_current, psz_album );
 464     }
 465
 466     if( NONEMPTY( psz_genre ) )
 467         input_item_SetGenre( p_current, psz_genre );
 468
 469     if( NONEMPTY( psz_artist ) )
 470         input_item_SetArtist( p_current, psz_artist );
 471
 472     if( NONEMPTY( psz_year ) )
 473         input_item_SetDate( p_current, psz_year );
 474
 475     if( NONEMPTY( psz_description ) )
 476         input_item_SetDescription( p_current, psz_description );
 477
 478     const mtime_t i_duration = (int64_t)( p_sys->p_sectors[i_titles] - p_sys->p_sectors[0] ) *
 479                                CDDA_DATA_SIZE * 1000000 / 44100 / 2 / 2;
 480     input_item_SetDuration( p_current, i_duration );
 481
 482     input_item_node_t *p_root = input_item_node_Create( p_current );
 483
 484     /* Build title table */
 485     for( int i = 0; i < i_titles; i++ )
 486     {
 487         input_item_t *p_input_item;
 488
 489         char *psz_uri, *psz_opt, *psz_first, *psz_last;
 490         char *psz_name;
 491
 492         msg_Dbg( p_access, "track[%d] start=%d", i, p_sys->p_sectors[i] );
 493
 494         /* */
 495         if( asprintf( &psz_uri, "cdda://%s", p_access->psz_location ) == -1 )
 496             psz_uri = NULL;
 497         if( asprintf( &psz_opt, "cdda-track=%i", i+1 ) == -1 )
 498             psz_opt = NULL;
 499         if( asprintf( &psz_first, "cdda-first-sector=%i",p_sys->p_sectors[i] ) == -1 )
 500             psz_first = NULL;
 501         if( asprintf( &psz_last, "cdda-last-sector=%i", p_sys->p_sectors[i+1] ) == -1 )
 502             psz_last = NULL;
 503
 504         /* Define a "default name" */
 505         if( asprintf( &psz_name, _("Audio CD - Track %02i"), (i+1) ) == -1 )
 506             psz_name = NULL;
 507
 508         /* Create playlist items */
 509         const mtime_t i_duration = (int64_t)( p_sys->p_sectors[i+1] - p_sys->p_sectors[i] ) *
 510                                    CDDA_DATA_SIZE * 1000000 / 44100 / 2 / 2;
 511         p_input_item = input_item_NewWithType( VLC_OBJECT( p_access ),
 512                                               psz_uri, psz_name, 0, NULL, 0, i_duration,
 513                                               ITEM_TYPE_DISC );
 514         input_item_CopyOptions( p_current, p_input_item );
 515         input_item_AddOption( p_input_item, psz_first, VLC_INPUT_OPTION_TRUSTED );
 516         input_item_AddOption( p_input_item, psz_last, VLC_INPUT_OPTION_TRUSTED );
 517         input_item_AddOption( p_input_item, psz_opt, VLC_INPUT_OPTION_TRUSTED );
 518
 519         const char *psz_track_title = NULL;
 520         const char *psz_track_artist = NULL;
 521         const char *psz_track_genre = NULL;
 522         const char *psz_track_description = NULL;
 523
 524 #ifdef HAVE_LIBCDDB
 525         /* Retreive CDDB information */
 526         if( p_disc )
 527         {
 528             cddb_track_t *t = cddb_disc_get_track( p_disc, i );
 529             if( t != NULL )
 530             {
 531                 psz_track_title = cddb_track_get_title( t );
 532                 psz_track_artist = cddb_track_get_artist( t );
 533             }
 534         }
 535 #endif
 536
 537         /* Retreive CD-TEXT information but prefer CDDB */
 538         if( i+1 < i_cd_text && pp_cd_text[i+1] )
 539         {
 540             const vlc_meta_t *t = pp_cd_text[i+1];
 541
 542             ON_EMPTY( psz_track_title,       vlc_meta_Get( t, vlc_meta_Title ) );
 543             ON_EMPTY( psz_track_artist,      vlc_meta_Get( t, vlc_meta_Artist ) );
 544             ON_EMPTY( psz_track_genre,       vlc_meta_Get( t, vlc_meta_Genre ) );
 545             ON_EMPTY( psz_track_description, vlc_meta_Get( t, vlc_meta_Description ) );
 546         }
 547
 548         /* */
 549         ON_EMPTY( psz_track_artist,       psz_artist );
 550         ON_EMPTY( psz_track_genre,        psz_genre );
 551         ON_EMPTY( psz_track_description,  psz_description );
 552
 553         /* */
 554         if( NONEMPTY( psz_track_title ) )
 555         {
 556             input_item_SetName( p_input_item, psz_track_title );
 557             input_item_SetTitle( p_input_item, psz_track_title );
 558         }
 559
 560         if( NONEMPTY( psz_track_artist ) )
 561             input_item_SetArtist( p_input_item, psz_track_artist );
 562
 563         if( NONEMPTY( psz_track_genre ) )
 564             input_item_SetGenre( p_input_item, psz_track_genre );
 565
 566         if( NONEMPTY( psz_track_description ) )
 567             input_item_SetDescription( p_input_item, psz_track_description );
 568
 569         if( NONEMPTY( psz_album ) )
 570             input_item_SetAlbum( p_input_item, psz_album );
 571
 572         if( NONEMPTY( psz_year ) )
 573             input_item_SetDate( p_input_item, psz_year );
 574
 575         char psz_num[3+1];
 576         snprintf( psz_num, sizeof(psz_num), "%d", 1+i );
 577         input_item_SetTrackNum( p_input_item, psz_num );
 578
 579         input_item_node_AppendItem( p_root, p_input_item );
 580         vlc_gc_decref( p_input_item );
 581         free( psz_uri ); free( psz_opt ); free( psz_name );
 582         free( psz_first ); free( psz_last );
 583     }
 584 #undef ON_EMPTY
 585 #undef NONEMPTY
 586
 587     input_item_node_PostAndDelete( p_root );
 588
 589     /* */
 590     for( int i = 0; i < i_cd_text; i++ )
 591     {
 592         vlc_meta_t *p_meta = pp_cd_text[i];
 593         if( !p_meta )
 594             continue;
 595         vlc_meta_Delete( p_meta );
 596     }
 597     free( pp_cd_text );
 598
 599 #ifdef HAVE_LIBCDDB
 600     if( p_disc )
 601         cddb_disc_destroy( p_disc );
 602 #endif
 603     return VLC_SUCCESS;
 604 }
 605
 606 #ifdef HAVE_LIBCDDB
 607 static cddb_disc_t *GetCDDBInfo( access_t *p_access, int i_titles, int *p_sectors )
 608 {
 609     if( var_CreateGetInteger( p_access, "album-art" ) == ALBUM_ART_WHEN_ASKED )
 610         return NULL;
 611
 612     /* */
 613     cddb_conn_t *p_cddb = cddb_new();
 614     if( !p_cddb )
 615     {
 616         msg_Warn( p_access, "unable to use CDDB" );
 617         return NULL;
 618     }
 619
 620     /* */
 621     char *psz_tmp = var_InheritString( p_access, "cddb-server" );
 622     if( psz_tmp )
 623     {
 624         cddb_set_server_name( p_cddb, psz_tmp );
 625         free( psz_tmp );
 626     }
 627
 628     cddb_set_server_port( p_cddb, var_InheritInteger( p_access, "cddb-port" ) );
 629
 630     cddb_set_email_address( p_cddb, "vlc@videolan.org" );
 631
 632     /// \todo
 633     cddb_cache_disable( p_cddb );
 634
 635 //    cddb_cache_set_dir( p_cddb,
 636 //                     var_InheritString( p_access,
 637 //                                    MODULE_STRING "-cddb-cachedir") );
 638
 639     cddb_set_timeout( p_cddb, 10 );
 640
 641     /// \todo
 642     cddb_http_disable( p_cddb );
 643
 644     /* */
 645     cddb_disc_t *p_disc = cddb_disc_new();
 646     if( !p_disc )
 647     {
 648         msg_Err( p_access, "unable to create CDDB disc structure." );
 649         goto error;
 650     }
 651
 652     int64_t i_length = 0;
 653     for( int i = 0; i < i_titles; i++ )
 654     {
 655         cddb_track_t *t = cddb_track_new();
 656         cddb_track_set_frame_offset( t, p_sectors[i] );
 657         cddb_disc_add_track( p_disc, t );
 658         const int64_t i_size = ( p_sectors[i+1] - p_sectors[i] ) *
 659                                (int64_t)CDDA_DATA_SIZE;
 660         i_length += INT64_C(1000000) * i_size / 44100 / 4  ;
 661     }
 662
 663     cddb_disc_set_length( p_disc, (int)(i_length/1000000) );
 664
 665     if( !cddb_disc_calc_discid( p_disc ) )
 666     {
 667         msg_Err( p_access, "CDDB disc ID calculation failed" );
 668         goto error;
 669     }
 670
 671     const int i_matches = cddb_query( p_cddb, p_disc );
 672     if( i_matches < 0 )
 673     {
 674         msg_Warn( p_access, "CDDB error: %s", cddb_error_str(errno) );
 675         goto error;
 676     }
 677     else if( i_matches == 0 )
 678     {
 679         msg_Dbg( p_access, "Couldn't find any matches in CDDB." );
 680         goto error;
 681     }
 682     else if( i_matches > 1 )
 683         msg_Warn( p_access, "found %d matches in CDDB. Using first one.", i_matches );
 684
 685     cddb_read( p_cddb, p_disc );
 686
 687     cddb_destroy( p_cddb);
 688     return p_disc;
 689
 690 error:
 691     if( p_disc )
 692         cddb_disc_destroy( p_disc );
 693     cddb_destroy( p_cddb );
 694     return NULL;
 695 }
 696 #endif /*HAVE_LIBCDDB*/
 697