art.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:7k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * art.c : Art metadata handling
- *****************************************************************************
- * Copyright (C) 1998-2008 the VideoLAN team
- * $Id: 8b65121b48f777ff5c081875bd6bc5531931342b $
- *
- * Authors: Antoine Cellerier <dionoea@videolan.org>
- * Clément Stenac <zorglub@videolan.org
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <assert.h>
- #include <vlc_common.h>
- #include <vlc_playlist.h>
- #include <vlc_charset.h>
- #include <vlc_strings.h>
- #include <vlc_stream.h>
- #include <vlc_url.h>
- #include <limits.h> /* PATH_MAX */
- #ifdef HAVE_SYS_STAT_H
- # include <sys/stat.h>
- #endif
- #include "../libvlc.h"
- #include "playlist_internal.h"
- static void ArtCacheCreateDir( const char *psz_dir )
- {
- char newdir[strlen( psz_dir ) + 1];
- strcpy( newdir, psz_dir );
- char * psz_newdir = newdir;
- char * psz = psz_newdir;
- while( *psz )
- {
- while( *psz && *psz != DIR_SEP_CHAR) psz++;
- if( !*psz ) break;
- *psz = 0;
- if( !EMPTY_STR( psz_newdir ) )
- utf8_mkdir( psz_newdir, 0700 );
- *psz = DIR_SEP_CHAR;
- psz++;
- }
- utf8_mkdir( psz_dir, 0700 );
- }
- static void ArtCacheGetDirPath( char *psz_dir,
- const char *psz_title,
- const char *psz_artist, const char *psz_album )
- {
- char *psz_cachedir = config_GetCacheDir();
- if( !EMPTY_STR(psz_artist) && !EMPTY_STR(psz_album) )
- {
- char *psz_album_sanitized = filename_sanitize( psz_album );
- char *psz_artist_sanitized = filename_sanitize( psz_artist );
- snprintf( psz_dir, PATH_MAX, "%s" DIR_SEP
- "art" DIR_SEP "artistalbum" DIR_SEP "%s" DIR_SEP "%s",
- psz_cachedir, psz_artist_sanitized, psz_album_sanitized );
- free( psz_album_sanitized );
- free( psz_artist_sanitized );
- }
- else
- {
- char * psz_title_sanitized = filename_sanitize( psz_title );
- snprintf( psz_dir, PATH_MAX, "%s" DIR_SEP
- "art" DIR_SEP "title" DIR_SEP "%s",
- psz_cachedir, psz_title_sanitized );
- free( psz_title_sanitized );
- }
- free( psz_cachedir );
- }
- static char *ArtCachePath( input_item_t *p_item )
- {
- char psz_path[PATH_MAX+1]; /* FIXME */
- vlc_mutex_lock( &p_item->lock );
- if( !p_item->p_meta )
- p_item->p_meta = vlc_meta_New();
- if( !p_item->p_meta )
- {
- vlc_mutex_unlock( &p_item->lock );
- return NULL;
- }
- const char *psz_artist = vlc_meta_Get( p_item->p_meta, vlc_meta_Artist );
- const char *psz_album = vlc_meta_Get( p_item->p_meta, vlc_meta_Album );
- const char *psz_title = vlc_meta_Get( p_item->p_meta, vlc_meta_Title );
- if( !psz_title )
- psz_title = p_item->psz_name;
- if( (!psz_artist || !psz_album ) && !psz_title )
- {
- vlc_mutex_unlock( &p_item->lock );
- return NULL;
- }
- ArtCacheGetDirPath( psz_path, psz_title, psz_artist, psz_album );
- vlc_mutex_unlock( &p_item->lock );
- return strdup( psz_path );
- }
- static char *ArtCacheName( input_item_t *p_item, const char *psz_type )
- {
- char *psz_path = ArtCachePath( p_item );
- if( !psz_path )
- return NULL;
- ArtCacheCreateDir( psz_path );
- char *psz_ext = filename_sanitize( psz_type ? psz_type : "" );
- char *psz_filename;
- if( asprintf( &psz_filename, "%s" DIR_SEP "art%s", psz_path, psz_ext ) < 0 )
- psz_filename = NULL;
- free( psz_ext );
- free( psz_path );
- return psz_filename;
- }
- /* */
- int playlist_FindArtInCache( input_item_t *p_item )
- {
- char *psz_path = ArtCachePath( p_item );
- if( !psz_path )
- return VLC_EGENERIC;
- /* Check if file exists */
- DIR *p_dir = utf8_opendir( psz_path );
- if( !p_dir )
- {
- free( psz_path );
- return VLC_EGENERIC;
- }
- bool b_found = false;
- char *psz_filename;
- while( !b_found && (psz_filename = utf8_readdir( p_dir )) )
- {
- if( !strncmp( psz_filename, "art", 3 ) )
- {
- char *psz_file;
- if( asprintf( &psz_file, "%s" DIR_SEP "%s",
- psz_path, psz_filename ) < 0 )
- psz_file = NULL;
- if( psz_file )
- {
- char *psz_uri = make_URI( psz_file );
- if( psz_uri )
- {
- input_item_SetArtURL( p_item, psz_uri );
- free( psz_uri );
- }
- free( psz_file );
- }
- b_found = true;
- }
- free( psz_filename );
- }
- /* */
- closedir( p_dir );
- free( psz_path );
- return b_found ? VLC_SUCCESS : VLC_EGENERIC;
- }
- /* */
- int playlist_SaveArt( playlist_t *p_playlist, input_item_t *p_item,
- const uint8_t *p_buffer, int i_buffer, const char *psz_type )
- {
- char *psz_filename = ArtCacheName( p_item, psz_type );
- if( !psz_filename )
- return VLC_EGENERIC;
- char *psz_uri = make_URI( psz_filename );
- if( !psz_uri )
- {
- free( psz_filename );
- return VLC_EGENERIC;
- }
- /* Check if we already dumped it */
- struct stat s;
- if( !utf8_stat( psz_filename, &s ) )
- {
- input_item_SetArtURL( p_item, psz_uri );
- free( psz_filename );
- free( psz_uri );
- return VLC_SUCCESS;
- }
- /* Dump it otherwise */
- FILE *f = utf8_fopen( psz_filename, "wb" );
- if( f )
- {
- if( fwrite( p_buffer, i_buffer, 1, f ) != 1 )
- {
- msg_Err( p_playlist, "%s: %m", psz_filename );
- }
- else
- {
- msg_Dbg( p_playlist, "album art saved to %s", psz_filename );
- input_item_SetArtURL( p_item, psz_uri );
- }
- fclose( f );
- }
- free( psz_filename );
- free( psz_uri );
- return VLC_SUCCESS;
- }