1 /*****************************************************************************
2 * meta.c : Metadata handling
3 *****************************************************************************
4 * Copyright (C) 1998-2004 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 *****************************************************************************/
26 #include <vlc_input.h>
27 #include <vlc_stream.h>
29 #include <vlc_playlist.h>
30 #include <vlc_charset.h>
31 #include "../playlist/playlist_internal.h"
34 #ifdef HAVE_SYS_STAT_H
35 # include <sys/stat.h>
38 int input_FindArtInCache( playlist_t *p_playlist, input_item_t *p_item );
40 vlc_bool_t input_MetaSatisfied( playlist_t *p_playlist, input_item_t *p_item,
41 uint32_t *pi_mandatory, uint32_t *pi_optional )
44 *pi_mandatory = VLC_META_ENGINE_TITLE | VLC_META_ENGINE_ARTIST;
45 assert( p_item->p_meta );
47 uint32_t i_meta = input_CurrentMetaFlags( p_item->p_meta );
48 *pi_mandatory &= ~i_meta;
49 *pi_optional = 0; /// Todo
50 return *pi_mandatory ? VLC_FALSE:VLC_TRUE;
53 int input_MetaFetch( playlist_t *p_playlist, input_item_t *p_item )
55 struct meta_engine_t *p_me;
56 uint32_t i_mandatory, i_optional;
58 assert( p_item->p_meta );
60 input_MetaSatisfied( p_playlist, p_item, &i_mandatory, &i_optional );
61 // Meta shouldn't magically appear
62 assert( i_mandatory );
64 /* FIXME: object creation is overkill, use p_private */
65 p_me = vlc_object_create( p_playlist, VLC_OBJECT_META_ENGINE );
66 p_me->i_flags |= OBJECT_FLAGS_NOINTERACT;
67 p_me->i_flags |= OBJECT_FLAGS_QUIET;
68 p_me->i_mandatory = i_mandatory;
69 p_me->i_optional = i_optional;
71 p_me->p_item = p_item;
72 p_me->p_module = module_Need( p_me, "meta fetcher", 0, VLC_FALSE );
75 vlc_object_destroy( p_me );
78 module_Unneed( p_me, p_me->p_module );
79 vlc_object_destroy( p_me );
85 * 1 : Art found, need to download
86 * -X : Error/not found
88 int input_ArtFind( playlist_t *p_playlist, input_item_t *p_item )
90 int i_ret = VLC_EGENERIC;
92 if( !p_item->p_meta || !p_item->p_meta->psz_album ||
93 !p_item->p_meta->psz_artist )
96 /* If we already checked this album in this session, skip */
97 FOREACH_ARRAY( playlist_album_t album, p_playlist->p_fetcher->albums )
98 if( !strcmp( album.psz_artist, p_item->p_meta->psz_artist ) &&
99 !strcmp( album.psz_album, p_item->p_meta->psz_album ) )
101 msg_Dbg( p_playlist, " %s - %s has already been searched",
102 p_item->p_meta->psz_artist, p_item->p_meta->psz_album );
105 /* Actually get URL from cache */
106 input_FindArtInCache( p_playlist, p_item );
114 input_FindArtInCache( p_playlist, p_item );
115 if( !EMPTY_STR( p_item->p_meta->psz_arturl ) )
119 p_playlist->p_private = p_item;
120 msg_Dbg( p_playlist, "searching art for %s - %s",
121 p_item->p_meta->psz_artist, p_item->p_meta->psz_album );
122 p_module = module_Need( p_playlist, "art finder", 0, VLC_FALSE );
127 msg_Dbg( p_playlist, "unable to find art" );
129 /* Record this album */
131 a.psz_artist = strdup( p_item->p_meta->psz_artist );
132 a.psz_album = strdup( p_item->p_meta->psz_album );
133 a.b_found = (i_ret == VLC_EGENERIC ? VLC_FALSE : VLC_TRUE );
134 ARRAY_APPEND( p_playlist->p_fetcher->albums, a );
137 module_Unneed( p_playlist, p_module );
138 p_playlist->p_private = NULL;
145 # define MAX_PATH 250
147 int input_FindArtInCache( playlist_t *p_playlist, input_item_t *p_item )
151 char psz_filename[MAX_PATH+1];
154 const char *ppsz_type[] = { ".jpg", ".png", ".gif", ".bmp", "" };
156 if( !p_item->p_meta ) return VLC_EGENERIC;
158 psz_artist = p_item->p_meta->psz_artist;
159 psz_album = p_item->p_meta->psz_album;
161 for( i = 0; i < 5; i++ )
163 snprintf( psz_filename, MAX_PATH,
164 "file://%s" DIR_SEP CONFIG_DIR DIR_SEP "art"
165 DIR_SEP "%s" DIR_SEP "%s" DIR_SEP "art%s",
166 p_playlist->p_libvlc->psz_homedir,
167 psz_artist, psz_album, ppsz_type[i] );
169 /* Check if file exists */
170 if( utf8_stat( psz_filename+7, &a ) == 0 )
172 vlc_meta_SetArtURL( p_item->p_meta, psz_filename );
180 * Download the art using the URL or an art downloaded
181 * This function should be called only if data is not already in cache
183 int input_DownloadAndCacheArt( playlist_t *p_playlist, input_item_t *p_item )
185 int i_status = VLC_EGENERIC;
187 char psz_filename[MAX_PATH+1], psz_dir[MAX_PATH+1];
188 char *psz_artist = NULL;
189 char *psz_album = NULL;
192 if( p_item->p_meta->psz_artist )
193 psz_artist = strdup( p_item->p_meta->psz_artist );
194 if( p_item->p_meta->psz_album )
195 psz_album = strdup( p_item->p_meta->psz_album );
197 assert( p_item->p_meta && !EMPTY_STR(p_item->p_meta->psz_arturl) );
199 /* FIXME: use an alternate saving filename scheme if we don't have
200 * the artist or album name */
201 if( !p_item->p_meta->psz_artist || !p_item->p_meta->psz_album )
208 /* Doesn't create a filename with invalid characters
209 * TODO: several filesystems forbid several characters: list them all
211 for( i = 0 ; i < strlen( psz_artist ) ; i++ )
212 if( psz_artist[i] == '/' )
215 for( i = 0 ; i < strlen( psz_album ) ; i++ )
216 if( psz_album[i] == '/' )
219 psz_type = strrchr( p_item->p_meta->psz_arturl, '.' );
221 /* Todo: get a helper to do this */
222 snprintf( psz_filename, MAX_PATH,
223 "file://%s" DIR_SEP CONFIG_DIR DIR_SEP "art"
224 DIR_SEP "%s" DIR_SEP "%s" DIR_SEP "art%s",
225 p_playlist->p_libvlc->psz_homedir,
226 psz_artist, psz_album, psz_type );
228 snprintf( psz_dir, MAX_PATH, "%s" DIR_SEP CONFIG_DIR,
229 p_playlist->p_libvlc->psz_homedir );
230 utf8_mkdir( psz_dir );
231 snprintf( psz_dir, MAX_PATH, "%s" DIR_SEP CONFIG_DIR DIR_SEP "art",
232 p_playlist->p_libvlc->psz_homedir );
233 utf8_mkdir( psz_dir );
234 snprintf( psz_dir, MAX_PATH, "%s" DIR_SEP CONFIG_DIR DIR_SEP
236 p_playlist->p_libvlc->psz_homedir, psz_artist );
237 utf8_mkdir( psz_dir );
238 snprintf( psz_dir, MAX_PATH, "%s" DIR_SEP CONFIG_DIR DIR_SEP
239 "art" DIR_SEP "%s" DIR_SEP "%s",
240 p_playlist->p_libvlc->psz_homedir,
241 psz_artist, psz_album );
242 utf8_mkdir( psz_dir );
244 if( !strncmp( p_item->p_meta->psz_arturl , "APIC", 4 ) )
246 msg_Warn( p_playlist, "APIC fetch not supported yet" );
252 p_stream = stream_UrlNew( p_playlist, p_item->p_meta->psz_arturl );
255 uint8_t p_buffer[65536];
257 FILE *p_file = utf8_fopen( psz_filename+7, "w" );
259 while( ( l_read = stream_Read( p_stream, p_buffer, sizeof (p_buffer) ) ) )
261 if( fwrite( p_buffer, l_read, 1, p_file ) != 1 )
267 if( fclose( p_file ) && !err )
269 stream_Delete( p_stream );
270 free( p_item->p_meta->psz_arturl );
273 msg_Err( p_playlist, "%s: %s", psz_filename, strerror( err ) );
275 msg_Dbg( p_playlist, "album art saved to %s\n", psz_filename );
277 p_item->p_meta->psz_arturl = strdup( psz_filename );
278 i_status = VLC_SUCCESS;
285 uint32_t input_CurrentMetaFlags( vlc_meta_t *p_meta )
289 #define CHECK( a, b ) \
290 if( p_meta->psz_ ## a && *p_meta->psz_ ## a ) \
291 i_meta |= VLC_META_ENGINE_ ## b;
293 CHECK( title, TITLE )
294 CHECK( artist, ARTIST )
295 CHECK( album, COLLECTION )
297 /* As this is not used at the moment, don't uselessly check for it.
298 * Re-enable this when it is used */
299 CHECK( genre, GENRE )
300 CHECK( copyright, COPYRIGHT )
301 CHECK( tracknum, SEQ_NUM )
302 CHECK( description, DESCRIPTION )
303 CHECK( rating, RATING )
306 CHECK( language, LANGUAGE )
308 CHECK( arturl, ART_URL )