1 /*****************************************************************************
2 * art.c : Art metadata handling
3 *****************************************************************************
4 * Copyright (C) 1998-2008 the VideoLAN team
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
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 *****************************************************************************/
30 #include <vlc_common.h>
31 #include <vlc_playlist.h>
33 #include <vlc_strings.h>
34 #include <vlc_stream.h>
38 #include <limits.h> /* PATH_MAX */
40 #ifdef HAVE_SYS_STAT_H
41 # include <sys/stat.h>
44 #include "../libvlc.h"
45 #include "playlist_internal.h"
47 static void ArtCacheCreateDir( const char *psz_dir )
49 char newdir[strlen( psz_dir ) + 1];
50 strcpy( newdir, psz_dir );
51 char * psz_newdir = newdir;
52 char * psz = psz_newdir;
56 while( *psz && *psz != DIR_SEP_CHAR) psz++;
59 if( !EMPTY_STR( psz_newdir ) )
60 vlc_mkdir( psz_newdir, 0700 );
64 vlc_mkdir( psz_dir, 0700 );
67 static char* ArtCacheGetDirPath( const char *psz_arturl, const char *psz_artist,
68 const char *psz_album )
71 char *psz_cachedir = config_GetUserDir(VLC_CACHE_DIR);
73 if( !EMPTY_STR(psz_artist) && !EMPTY_STR(psz_album) )
75 char *psz_album_sanitized = strdup( psz_album );
76 filename_sanitize( psz_album_sanitized );
77 char *psz_artist_sanitized = strdup( psz_artist );
78 filename_sanitize( psz_artist_sanitized );
79 if( asprintf( &psz_dir, "%s" DIR_SEP "art" DIR_SEP "artistalbum"
80 DIR_SEP "%s" DIR_SEP "%s", psz_cachedir,
81 psz_artist_sanitized, psz_album_sanitized ) == -1 )
83 free( psz_album_sanitized );
84 free( psz_artist_sanitized );
88 /* If artist or album missing cache by art download URL. The download
89 URL will be md5 hashed to form a valid cache filename. We assume that
90 psz_arturl is always the download URL and not the already hashed filename.
91 (We should never need to call this function if art has already been
92 downloaded anyway). */
95 AddMD5( &md5, psz_arturl, strlen( psz_arturl ) );
97 char * psz_arturl_sanitized = psz_md5_hash( &md5 );
98 if( asprintf( &psz_dir, "%s" DIR_SEP "art" DIR_SEP "arturl" DIR_SEP
99 "%s", psz_cachedir, psz_arturl_sanitized ) == -1 )
101 free( psz_arturl_sanitized );
103 free( psz_cachedir );
107 static char *ArtCachePath( input_item_t *p_item )
109 char* psz_path = NULL;
110 const char *psz_artist;
111 const char *psz_album;
112 const char *psz_arturl;
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 );
125 if( (EMPTY_STR(psz_artist) || EMPTY_STR(psz_album) ) && !psz_arturl )
128 psz_path = ArtCacheGetDirPath( psz_arturl, psz_artist, psz_album );
131 vlc_mutex_unlock( &p_item->lock );
135 static char *ArtCacheName( input_item_t *p_item, const char *psz_type )
137 char *psz_path = ArtCachePath( p_item );
141 ArtCacheCreateDir( psz_path );
143 char *psz_ext = strdup( psz_type ? psz_type : "" );
144 filename_sanitize( psz_ext );
146 if( asprintf( &psz_filename, "%s" DIR_SEP "art%s", psz_path, psz_ext ) < 0 )
156 int playlist_FindArtInCache( input_item_t *p_item )
158 char *psz_path = ArtCachePath( p_item );
163 /* Check if file exists */
164 DIR *p_dir = vlc_opendir( psz_path );
171 bool b_found = false;
173 while( !b_found && (psz_filename = vlc_readdir( p_dir )) )
175 if( !strncmp( psz_filename, "art", 3 ) )
178 if( asprintf( &psz_file, "%s" DIR_SEP "%s",
179 psz_path, psz_filename ) != -1 )
181 char *psz_uri = make_URI( psz_file, "file" );
184 input_item_SetArtURL( p_item, psz_uri );
192 free( psz_filename );
198 return b_found ? VLC_SUCCESS : VLC_EGENERIC;
203 int playlist_SaveArt( playlist_t *p_playlist, input_item_t *p_item,
204 const uint8_t *p_buffer, int i_buffer, const char *psz_type )
206 char *psz_filename = ArtCacheName( p_item, psz_type );
211 char *psz_uri = make_URI( psz_filename, "file" );
214 free( psz_filename );
218 /* Check if we already dumped it */
220 if( !vlc_stat( psz_filename, &s ) )
222 input_item_SetArtURL( p_item, psz_uri );
223 free( psz_filename );
228 /* Dump it otherwise */
229 FILE *f = vlc_fopen( psz_filename, "wb" );
232 if( fwrite( p_buffer, i_buffer, 1, f ) != 1 )
234 msg_Err( p_playlist, "%s: %m", psz_filename );
238 msg_Dbg( p_playlist, "album art saved to %s", psz_filename );
239 input_item_SetArtURL( p_item, psz_uri );
243 free( psz_filename );