1 /*****************************************************************************
2 * art.c : Art metadata handling
3 *****************************************************************************
4 * Copyright (C) 1998-2008 VLC authors and VideoLAN
7 * Authors: Antoine Cellerier <dionoea@videolan.org>
8 * Clément Stenac <zorglub@videolan.org
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.
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.
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 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_input_item.h>
35 #include <vlc_strings.h>
41 static void ArtCacheCreateDir( const char *psz_dir )
43 char newdir[strlen( psz_dir ) + 1];
44 strcpy( newdir, psz_dir );
45 char * psz_newdir = newdir;
46 char * psz = psz_newdir;
50 while( *psz && *psz != DIR_SEP_CHAR) psz++;
53 if( !EMPTY_STR( psz_newdir ) )
54 vlc_mkdir( psz_newdir, 0700 );
58 vlc_mkdir( psz_dir, 0700 );
61 static char* ArtCacheGetDirPath( const char *psz_arturl, const char *psz_artist,
62 const char *psz_album, const char *psz_title )
65 char *psz_cachedir = config_GetUserDir(VLC_CACHE_DIR);
67 if( !EMPTY_STR(psz_artist) && !EMPTY_STR(psz_album) )
69 char *psz_album_sanitized = strdup( psz_album );
70 filename_sanitize( psz_album_sanitized );
71 char *psz_artist_sanitized = strdup( psz_artist );
72 filename_sanitize( psz_artist_sanitized );
73 if( asprintf( &psz_dir, "%s" DIR_SEP "art" DIR_SEP "artistalbum"
74 DIR_SEP "%s" DIR_SEP "%s", psz_cachedir,
75 psz_artist_sanitized, psz_album_sanitized ) == -1 )
77 free( psz_album_sanitized );
78 free( psz_artist_sanitized );
82 /* If artist or album are missing, cache by art download URL.
83 * If the URL is an attachment://, add the title to the cache name.
84 * It will be md5 hashed to form a valid cache filename.
85 * We assume that psz_arturl is always the download URL and not the
86 * already hashed filename.
87 * (We should never need to call this function if art has already been
92 AddMD5( &md5, psz_arturl, strlen( psz_arturl ) );
93 if( !strncmp( psz_arturl, "attachment://", 13 ) )
94 AddMD5( &md5, psz_title, strlen( psz_title ) );
96 char * psz_arturl_sanitized = psz_md5_hash( &md5 );
97 if( asprintf( &psz_dir, "%s" DIR_SEP "art" DIR_SEP "arturl" DIR_SEP
98 "%s", psz_cachedir, psz_arturl_sanitized ) == -1 )
100 free( psz_arturl_sanitized );
102 free( psz_cachedir );
106 static char *ArtCachePath( input_item_t *p_item )
108 char* psz_path = NULL;
109 const char *psz_artist;
110 const char *psz_album;
111 const char *psz_arturl;
112 const char *psz_title;
114 vlc_mutex_lock( &p_item->lock );
116 if( !p_item->p_meta )
117 p_item->p_meta = vlc_meta_New();
118 if( !p_item->p_meta )
121 psz_artist = vlc_meta_Get( p_item->p_meta, vlc_meta_Artist );
122 psz_album = vlc_meta_Get( p_item->p_meta, vlc_meta_Album );
123 psz_arturl = vlc_meta_Get( p_item->p_meta, vlc_meta_ArtworkURL );
124 psz_title = vlc_meta_Get( p_item->p_meta, vlc_meta_Title );
126 psz_title = p_item->psz_name;
129 if( (EMPTY_STR(psz_artist) || EMPTY_STR(psz_album) ) && !psz_arturl )
132 psz_path = ArtCacheGetDirPath( psz_arturl, psz_artist, psz_album, psz_title );
135 vlc_mutex_unlock( &p_item->lock );
139 static char *ArtCacheName( input_item_t *p_item, const char *psz_type )
141 char *psz_path = ArtCachePath( p_item );
145 ArtCacheCreateDir( psz_path );
147 char *psz_ext = strdup( psz_type ? psz_type : "" );
148 filename_sanitize( psz_ext );
150 if( asprintf( &psz_filename, "%s" DIR_SEP "art%s", psz_path, psz_ext ) < 0 )
160 int playlist_FindArtInCache( input_item_t *p_item )
162 char *psz_path = ArtCachePath( p_item );
167 /* Check if file exists */
168 DIR *p_dir = vlc_opendir( psz_path );
175 bool b_found = false;
176 const char *psz_filename;
177 while( !b_found && (psz_filename = vlc_readdir( p_dir )) )
179 if( !strncmp( psz_filename, "art", 3 ) )
182 if( asprintf( &psz_file, "%s" DIR_SEP "%s",
183 psz_path, psz_filename ) != -1 )
185 char *psz_uri = vlc_path2uri( psz_file, "file" );
188 input_item_SetArtURL( p_item, psz_uri );
201 return b_found ? VLC_SUCCESS : VLC_EGENERIC;
204 static char * GetDirByItemUIDs( char *psz_uid )
206 char *psz_cachedir = config_GetUserDir(VLC_CACHE_DIR);
208 if( asprintf( &psz_dir, "%s" DIR_SEP
211 psz_cachedir, psz_uid ) == -1 )
215 free( psz_cachedir );
219 static char * GetFileByItemUID( char *psz_dir, const char *psz_type )
222 if( asprintf( &psz_file, "%s" DIR_SEP "%s", psz_dir, psz_type ) == -1 )
229 int playlist_FindArtInCacheUsingItemUID( input_item_t *p_item )
231 char *uid = input_item_GetInfo( p_item, "uid", "md5" );
238 /* we have an input item uid set */
240 char *psz_byuiddir = GetDirByItemUIDs( uid );
241 char *psz_byuidfile = GetFileByItemUID( psz_byuiddir, "arturl" );
242 free( psz_byuiddir );
245 FILE *fd = vlc_fopen( psz_byuidfile, "rb" );
248 char sz_cachefile[2049];
249 /* read the cache hash url */
250 if ( fgets( sz_cachefile, 2048, fd ) != NULL )
252 input_item_SetArtURL( p_item, sz_cachefile );
257 free( psz_byuidfile );
260 if ( b_done ) return VLC_SUCCESS;
266 int playlist_SaveArt( vlc_object_t *obj, input_item_t *p_item,
267 const void *data, size_t length, const char *psz_type )
269 char *psz_filename = ArtCacheName( p_item, psz_type );
274 char *psz_uri = vlc_path2uri( psz_filename, "file" );
277 free( psz_filename );
281 /* Check if we already dumped it */
283 if( !vlc_stat( psz_filename, &s ) )
285 input_item_SetArtURL( p_item, psz_uri );
286 free( psz_filename );
291 /* Dump it otherwise */
292 FILE *f = vlc_fopen( psz_filename, "wb" );
295 if( fwrite( data, 1, length, f ) != length )
297 msg_Err( obj, "%s: %s", psz_filename, vlc_strerror_c(errno) );
301 msg_Dbg( obj, "album art saved to %s", psz_filename );
302 input_item_SetArtURL( p_item, psz_uri );
309 char *uid = input_item_GetInfo( p_item, "uid", "md5" );
316 char *psz_byuiddir = GetDirByItemUIDs( uid );
317 char *psz_byuidfile = GetFileByItemUID( psz_byuiddir, "arturl" );
318 ArtCacheCreateDir( psz_byuiddir );
319 free( psz_byuiddir );
323 f = vlc_fopen( psz_byuidfile, "wb" );
326 if( fputs( "file://", f ) < 0 || fputs( psz_filename, f ) < 0 )
327 msg_Err( obj, "Error writing %s: %s", psz_byuidfile,
328 vlc_strerror_c(errno) );
331 free( psz_byuidfile );
336 free( psz_filename );