Remove legacy parameter from add_string()
[vlc/asuraparaju-public.git] / modules / access / cdda.c
blob6b1be81876ae95d52b60d5ff3c84b6369289ea04
1 /*****************************************************************************
2 * cdda.c : CD digital audio input module for vlc
3 *****************************************************************************
4 * Copyright (C) 2000, 2003-2006, 2008-2009 the VideoLAN team
5 * $Id$
7 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8 * Gildas Bazin <gbazin@netcourrier.com>
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.
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.
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 *****************************************************************************/
25 /**
26 * Todo:
27 * - Improve CDDB support (non-blocking, cache, ...)
28 * - Fix tracknumber in MRL
31 /*****************************************************************************
32 * Preamble
33 *****************************************************************************/
35 #ifdef HAVE_CONFIG_H
36 # include "config.h"
37 #endif
38 #include <assert.h>
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 */
47 #include <vlc_codecs.h> /* For WAVEHEADER */
48 #include "vcd/cdrom.h" /* For CDDA_DATA_SIZE */
50 #ifdef HAVE_LIBCDDB
51 #include <cddb/cddb.h>
52 #include <errno.h>
53 #endif
55 /*****************************************************************************
56 * Module descriptior
57 *****************************************************************************/
58 static int Open ( vlc_object_t * );
59 static void Close( vlc_object_t * );
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." )
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 )
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()
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 ()
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
93 add_shortcut( "cdda", "cddasimple" )
94 vlc_module_end ()
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)
101 /*****************************************************************************
102 * Access: local prototypes
103 *****************************************************************************/
104 struct access_sys_t
106 vcddev_t *vcddev; /* vcd device descriptor */
108 /* Current position */
109 int i_sector; /* Current Sector */
110 int *p_sectors; /* Track sectors */
112 /* Wave header for the output data */
113 WAVEHEADER waveheader;
114 bool b_header;
116 int i_track;
117 int i_first_sector;
118 int i_last_sector;
121 static block_t *Block( access_t * );
122 static int Seek( access_t *, uint64_t );
123 static int Control( access_t *, int, va_list );
125 static int GetTracks( access_t *p_access, input_item_t *p_current );
127 #ifdef HAVE_LIBCDDB
128 static cddb_disc_t *GetCDDBInfo( access_t *p_access, int i_titles, int *p_sectors );
129 #endif
131 /*****************************************************************************
132 * Open: open cdda
133 *****************************************************************************/
134 static int Open( vlc_object_t *p_this )
136 access_t *p_access = (access_t*)p_this;
137 access_sys_t *p_sys;
138 vcddev_t *vcddev;
139 char *psz_name;
141 if( !p_access->psz_filepath || !*p_access->psz_filepath )
143 /* Only when selected */
144 if( !p_access->psz_access || !*p_access->psz_access )
145 return VLC_EGENERIC;
147 psz_name = var_InheritString( p_this, "cd-audio" );
148 if( !psz_name )
149 return VLC_EGENERIC;
151 else psz_name = ToLocaleDup( p_access->psz_filepath );
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
158 /* Open CDDA */
159 if( (vcddev = ioctl_Open( VLC_OBJECT(p_access), psz_name ) ) == NULL )
161 msg_Warn( p_access, "could not open %s", psz_name );
162 free( psz_name );
163 return VLC_EGENERIC;
165 free( psz_name );
167 /* Set up p_access */
168 STANDARD_BLOCK_ACCESS_INIT
169 p_sys->vcddev = vcddev;
171 /* Do we play a single track ? */
172 p_sys->i_track = var_InheritInteger( p_access, "cdda-track" ) - 1;
174 if( p_sys->i_track < 0 )
176 /* We only do separate items if the whole disc is requested */
177 input_thread_t *p_input = access_GetParentInput( p_access );
179 int i_ret = -1;
180 if( p_input )
182 input_item_t *p_current = input_GetItem( p_input );
183 if( p_current )
184 i_ret = GetTracks( p_access, p_current );
186 vlc_object_release( p_input );
188 if( i_ret < 0 )
189 goto error;
191 else
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 */
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 )
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 )
222 msg_Err( p_access, "invalid track number" );
223 goto error;
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];
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;
234 /* PTS delay */
235 var_Create( p_access, "cdda-caching", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
237 return VLC_SUCCESS;
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;
246 /*****************************************************************************
247 * Close: closes cdda
248 *****************************************************************************/
249 static void Close( vlc_object_t *p_this )
251 access_t *p_access = (access_t *)p_this;
252 access_sys_t *p_sys = p_access->p_sys;
254 free( p_sys->p_sectors );
255 ioctl_Close( p_this, p_sys->vcddev );
256 free( p_sys );
259 /*****************************************************************************
260 * Block: read data (CDDA_DATA_ONCE)
261 *****************************************************************************/
262 static block_t *Block( access_t *p_access )
264 access_sys_t *p_sys = p_access->p_sys;
265 int i_blocks = CDDA_BLOCKS_ONCE;
266 block_t *p_block;
268 if( p_sys->i_track < 0 ) p_access->info.b_eof = true;
270 /* Check end of file */
271 if( p_access->info.b_eof ) return NULL;
273 if( !p_sys->b_header )
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;
282 if( p_sys->i_sector >= p_sys->i_last_sector )
284 p_access->info.b_eof = true;
285 return NULL;
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;
292 /* Do the actual reading */
293 if( !( p_block = block_New( p_access, i_blocks * CDDA_DATA_SIZE ) ) )
295 msg_Err( p_access, "cannot get a new block of size: %i",
296 i_blocks * CDDA_DATA_SIZE );
297 return NULL;
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 )
303 msg_Err( p_access, "cannot read sector %i", p_sys->i_sector );
304 block_Release( p_block );
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;
312 /* Update a few values */
313 p_sys->i_sector += i_blocks;
314 p_access->info.i_pos += p_block->i_buffer;
316 return p_block;
319 /****************************************************************************
320 * Seek
321 ****************************************************************************/
322 static int Seek( access_t *p_access, uint64_t i_pos )
324 access_sys_t *p_sys = p_access->p_sys;
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;
331 return VLC_SUCCESS;
334 /*****************************************************************************
335 * Control:
336 *****************************************************************************/
337 static int Control( access_t *p_access, int i_query, va_list args )
339 switch( i_query )
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;
348 case ACCESS_GET_PTS_DELAY:
349 *va_arg( args, int64_t * ) =
350 var_GetInteger( p_access, "cdda-caching" ) * INT64_C(1000);
351 break;
353 case ACCESS_SET_PAUSE_STATE:
354 break;
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;
364 default:
365 msg_Warn( p_access, "unimplemented query in control" );
366 return VLC_EGENERIC;
368 return VLC_SUCCESS;
371 static int GetTracks( access_t *p_access, input_item_t *p_current )
373 access_sys_t *p_sys = p_access->p_sys;
375 const int i_titles = ioctl_GetTracksMap( VLC_OBJECT(p_access),
376 p_sys->vcddev, &p_sys->p_sectors );
377 if( i_titles <= 0 )
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;;
386 /* */
387 input_item_SetName( p_current, "Audio CD" );
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;
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)
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 )
407 psz_album = cddb_disc_get_title( p_disc );
408 psz_genre = cddb_disc_get_genre( p_disc );
410 /* */
411 const unsigned i_year = cddb_disc_get_year( p_disc );
412 if( i_year > 0 )
414 psz_year = psz_year_buffer;
415 snprintf( psz_year_buffer, sizeof(psz_year_buffer), "%u", i_year );
418 /* Set artist only if unique */
419 for( int i = 0; i < i_titles; i++ )
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 ) )
428 psz_artist = NULL;
429 break;
431 psz_artist = psz_track_artist;
434 #endif
436 /* CD-Text */
437 vlc_meta_t **pp_cd_text;
438 int i_cd_text;
440 if( ioctl_GetCdText( VLC_OBJECT(p_access), p_sys->vcddev, &pp_cd_text, &i_cd_text ) )
442 msg_Dbg( p_access, "CD-TEXT information missing" );
443 i_cd_text = 0;
444 pp_cd_text = NULL;
447 /* Retrieve CD-TEXT information but prefer CDDB */
448 if( i_cd_text > 0 && pp_cd_text[0] )
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 ) );
457 if( NONEMPTY( psz_album ) )
459 input_item_SetName( p_current, psz_album );
460 input_item_SetAlbum( p_current, psz_album );
463 if( NONEMPTY( psz_genre ) )
464 input_item_SetGenre( p_current, psz_genre );
466 if( NONEMPTY( psz_artist ) )
467 input_item_SetArtist( p_current, psz_artist );
469 if( NONEMPTY( psz_year ) )
470 input_item_SetDate( p_current, psz_year );
472 if( NONEMPTY( psz_description ) )
473 input_item_SetDescription( p_current, psz_description );
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 );
479 input_item_node_t *p_root = input_item_node_Create( p_current );
481 /* Build title table */
482 for( int i = 0; i < i_titles; i++ )
484 input_item_t *p_input_item;
486 char *psz_uri, *psz_opt, *psz_first, *psz_last;
487 char *psz_name;
489 msg_Dbg( p_access, "track[%d] start=%d", i, p_sys->p_sectors[i] );
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;
501 /* Define a "default name" */
502 if( asprintf( &psz_name, _("Audio CD - Track %02i"), (i+1) ) == -1 )
503 psz_name = NULL;
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 );
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;
521 #ifdef HAVE_LIBCDDB
522 /* Retreive CDDB information */
523 if( p_disc )
525 cddb_track_t *t = cddb_disc_get_track( p_disc, i );
526 if( t != NULL )
528 psz_track_title = cddb_track_get_title( t );
529 psz_track_artist = cddb_track_get_artist( t );
532 #endif
534 /* Retreive CD-TEXT information but prefer CDDB */
535 if( i+1 < i_cd_text && pp_cd_text[i+1] )
537 const vlc_meta_t *t = pp_cd_text[i+1];
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 ) );
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 );
550 /* */
551 if( NONEMPTY( psz_track_title ) )
553 input_item_SetName( p_input_item, psz_track_title );
554 input_item_SetTitle( p_input_item, psz_track_title );
557 if( NONEMPTY( psz_track_artist ) )
558 input_item_SetArtist( p_input_item, psz_track_artist );
560 if( NONEMPTY( psz_track_genre ) )
561 input_item_SetGenre( p_input_item, psz_track_genre );
563 if( NONEMPTY( psz_track_description ) )
564 input_item_SetDescription( p_input_item, psz_track_description );
566 if( NONEMPTY( psz_album ) )
567 input_item_SetAlbum( p_input_item, psz_album );
569 if( NONEMPTY( psz_year ) )
570 input_item_SetDate( p_input_item, psz_year );
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 );
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 );
581 #undef ON_EMPTY
582 #undef NONEMPTY
584 input_item_node_PostAndDelete( p_root );
586 /* */
587 for( int i = 0; i < i_cd_text; i++ )
589 vlc_meta_t *p_meta = pp_cd_text[i];
590 if( !p_meta )
591 continue;
592 vlc_meta_Delete( p_meta );
594 free( pp_cd_text );
596 #ifdef HAVE_LIBCDDB
597 if( p_disc )
598 cddb_disc_destroy( p_disc );
599 #endif
600 return VLC_SUCCESS;
603 #ifdef HAVE_LIBCDDB
604 static cddb_disc_t *GetCDDBInfo( access_t *p_access, int i_titles, int *p_sectors )
606 if( var_InheritInteger( p_access, "album-art" ) == ALBUM_ART_WHEN_ASKED )
607 return NULL;
609 /* */
610 cddb_conn_t *p_cddb = cddb_new();
611 if( !p_cddb )
613 msg_Warn( p_access, "unable to use CDDB" );
614 return NULL;
617 /* */
618 char *psz_tmp = var_InheritString( p_access, "cddb-server" );
619 if( psz_tmp )
621 cddb_set_server_name( p_cddb, psz_tmp );
622 free( psz_tmp );
625 cddb_set_server_port( p_cddb, var_InheritInteger( p_access, "cddb-port" ) );
627 cddb_set_email_address( p_cddb, "vlc@videolan.org" );
629 /// \todo
630 cddb_cache_disable( p_cddb );
632 // cddb_cache_set_dir( p_cddb,
633 // var_InheritString( p_access,
634 // MODULE_STRING "-cddb-cachedir") );
636 cddb_set_timeout( p_cddb, 10 );
638 /// \todo
639 cddb_http_disable( p_cddb );
641 /* */
642 cddb_disc_t *p_disc = cddb_disc_new();
643 if( !p_disc )
645 msg_Err( p_access, "unable to create CDDB disc structure." );
646 goto error;
649 int64_t i_length = 0;
650 for( int i = 0; i < i_titles; i++ )
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 ;
660 cddb_disc_set_length( p_disc, (int)(i_length/1000000) );
662 if( !cddb_disc_calc_discid( p_disc ) )
664 msg_Err( p_access, "CDDB disc ID calculation failed" );
665 goto error;
668 const int i_matches = cddb_query( p_cddb, p_disc );
669 if( i_matches < 0 )
671 msg_Warn( p_access, "CDDB error: %s", cddb_error_str(errno) );
672 goto error;
674 else if( i_matches == 0 )
676 msg_Dbg( p_access, "Couldn't find any matches in CDDB." );
677 goto error;
679 else if( i_matches > 1 )
680 msg_Warn( p_access, "found %d matches in CDDB. Using first one.", i_matches );
682 cddb_read( p_cddb, p_disc );
684 cddb_destroy( p_cddb);
685 return p_disc;
687 error:
688 if( p_disc )
689 cddb_disc_destroy( p_disc );
690 cddb_destroy( p_cddb );
691 return NULL;
693 #endif /*HAVE_LIBCDDB*/