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>
32 #include <vlc_charset.h>
33 #include <vlc_strings.h>
34 #include <vlc_stream.h>
36 #ifdef HAVE_SYS_STAT_H
37 # include <sys/stat.h>
40 #include "../libvlc.h"
41 #include "playlist_internal.h"
43 static void ArtCacheCreateDir( const char *psz_dir )
45 char newdir[strlen( psz_dir ) + 1];
46 strcpy( newdir, psz_dir );
47 char * psz_newdir = newdir;
48 char * psz = psz_newdir;
52 while( *psz && *psz != DIR_SEP_CHAR) psz++;
55 if( !EMPTY_STR( psz_newdir ) )
56 utf8_mkdir( psz_newdir, 0700 );
60 utf8_mkdir( psz_dir, 0700 );
63 static char *ArtCacheGetSanitizedFileName( const char *psz )
65 char *dup = strdup(psz);
68 filename_sanitize( dup );
70 /* Doesn't create a filename with invalid characters
71 * TODO: several filesystems forbid several characters: list them all
73 for( i = 0; dup[i] != '\0'; i++ )
75 if( dup[i] == DIR_SEP_CHAR )
81 static void ArtCacheGetDirPath( char *psz_dir,
82 const char *psz_title,
83 const char *psz_artist, const char *psz_album )
85 char *psz_cachedir = config_GetCacheDir();
87 if( !EMPTY_STR(psz_artist) && !EMPTY_STR(psz_album) )
89 char * psz_album_sanitized = ArtCacheGetSanitizedFileName( psz_album );
90 char * psz_artist_sanitized = ArtCacheGetSanitizedFileName( psz_artist );
91 snprintf( psz_dir, PATH_MAX, "%s" DIR_SEP
92 "art" DIR_SEP "artistalbum" DIR_SEP "%s" DIR_SEP "%s",
93 psz_cachedir, psz_artist_sanitized, psz_album_sanitized );
94 free( psz_album_sanitized );
95 free( psz_artist_sanitized );
99 char * psz_title_sanitized = ArtCacheGetSanitizedFileName( psz_title );
100 snprintf( psz_dir, PATH_MAX, "%s" DIR_SEP
101 "art" DIR_SEP "title" DIR_SEP "%s",
102 psz_cachedir, psz_title_sanitized );
103 free( psz_title_sanitized );
105 free( psz_cachedir );
108 static char *ArtCachePath( input_item_t *p_item )
110 char psz_path[PATH_MAX+1]; /* FIXME */
112 vlc_mutex_lock( &p_item->lock );
114 if( !p_item->p_meta )
115 p_item->p_meta = vlc_meta_New();
116 if( !p_item->p_meta )
118 vlc_mutex_unlock( &p_item->lock );
122 const char *psz_artist = vlc_meta_Get( p_item->p_meta, vlc_meta_Artist );
123 const char *psz_album = vlc_meta_Get( p_item->p_meta, vlc_meta_Album );
124 const char *psz_title = vlc_meta_Get( p_item->p_meta, vlc_meta_Title );
127 psz_title = p_item->psz_name;
129 if( (!psz_artist || !psz_album ) && !psz_title )
131 vlc_mutex_unlock( &p_item->lock );
135 ArtCacheGetDirPath( psz_path, psz_title, psz_artist, psz_album );
137 vlc_mutex_unlock( &p_item->lock );
139 return strdup( psz_path );
142 static char *ArtCacheName( input_item_t *p_item, const char *psz_type )
144 char *psz_path = ArtCachePath( p_item );
148 ArtCacheCreateDir( psz_path );
150 char *psz_ext = strdup( psz_type ? psz_type : "" );
151 filename_sanitize( psz_ext );
154 if( asprintf( &psz_filename, "file://%s" DIR_SEP "art%s", psz_path, psz_ext ) < 0 )
163 int playlist_FindArtInCache( input_item_t *p_item )
165 char *psz_path = ArtCachePath( p_item );
170 /* Check if file exists */
171 DIR *p_dir = utf8_opendir( psz_path );
178 bool b_found = false;
180 while( !b_found && (psz_filename = utf8_readdir( p_dir )) )
182 if( !strncmp( psz_filename, "art", 3 ) )
185 if( asprintf( &psz_file, "file://%s" DIR_SEP "%s",
186 psz_path, psz_filename ) < 0 )
189 input_item_SetArtURL( p_item, psz_file );
194 free( psz_filename );
200 return b_found ? VLC_SUCCESS : VLC_EGENERIC;
204 * Download the art using the URL or an art downloaded
205 * This function should be called only if data is not already in cache
207 int playlist_DownloadArt( playlist_t *p_playlist, input_item_t *p_item )
209 char *psz_arturl = input_item_GetArtURL( p_item );
210 assert( *psz_arturl );
212 if( !strncmp( psz_arturl , "file://", 7 ) )
214 msg_Dbg( p_playlist, "Album art is local file, no need to cache" );
219 if( !strncmp( psz_arturl , "APIC", 4 ) )
221 msg_Warn( p_playlist, "APIC fetch not supported yet" );
225 stream_t *p_stream = stream_UrlNew( p_playlist, psz_arturl );
229 uint8_t *p_data = NULL;
235 if( i_data + i_read <= i_data ) /* Protect gainst overflow */
238 p_data = realloc( p_data, i_data + i_read );
242 i_read = stream_Read( p_stream, &p_data[i_data], i_read );
248 stream_Delete( p_stream );
250 if( p_data && i_data > 0 )
252 char *psz_type = strrchr( psz_arturl, '.' );
253 if( psz_type && strlen( psz_type ) > 5 )
254 psz_type = NULL; /* remove extension if it's > to 4 characters */
256 playlist_SaveArt( p_playlist, p_item, p_data, i_data, psz_type );
270 int playlist_SaveArt( playlist_t *p_playlist, input_item_t *p_item,
271 const uint8_t *p_buffer, int i_buffer, const char *psz_type )
273 char *psz_filename = ArtCacheName( p_item, psz_type );
278 /* Check if we already dumped it */
280 if( !utf8_stat( psz_filename+7, &s ) )
282 input_item_SetArtURL( p_item, psz_filename );
286 /* Dump it otherwise */
287 FILE *f = utf8_fopen( psz_filename+7, "w" );
290 if( fwrite( p_buffer, i_buffer, 1, f ) != 1 )
292 msg_Err( p_playlist, "%s: %m", psz_filename );
296 msg_Dbg( p_playlist, "album art saved to %s\n", psz_filename );
297 input_item_SetArtURL( p_item, psz_filename );