1 /*****************************************************************************
2 * b4s.c : B4S playlist format import
3 *****************************************************************************
4 * Copyright (C) 2005-2009 the VideoLAN team
7 * Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
32 #include <vlc_common.h>
33 #include <vlc_demux.h>
38 /*****************************************************************************
40 *****************************************************************************/
41 static int Demux( demux_t *p_demux);
42 static bool IsWhitespace( const char *psz_string );
44 /*****************************************************************************
45 * Import_B4S: main import function
46 *****************************************************************************/
47 int Import_B4S( vlc_object_t *p_this )
49 demux_t *demux = (demux_t *)p_this;
51 if( !demux_IsPathExtension( demux, ".b4s" )
52 && !demux_IsForced( demux, "b4s-open" ) )
55 demux->pf_demux = Demux;
56 demux->pf_control = Control;
61 static int Demux( demux_t *p_demux )
65 xml_reader_t *p_xml_reader = NULL;
66 char *psz_elname = NULL;
68 input_item_t *p_input;
69 char *psz_mrl = NULL, *psz_title = NULL, *psz_genre = NULL;
70 char *psz_now = NULL, *psz_listeners = NULL, *psz_bitrate = NULL;
71 input_item_node_t *p_subitems = NULL;
73 input_item_t *p_current_input = GetCurrentItem(p_demux);
75 free( stream_ReadLine( p_demux->s ) );
77 p_xml_reader = xml_ReaderCreate( p_demux, p_demux->s );
83 if( xml_ReaderNextNode( p_xml_reader, &node ) != XML_READER_STARTELEM )
85 msg_Err( p_demux, "invalid file (no root node)" );
89 if( strcmp( node, "WinampXML" ) )
91 msg_Err( p_demux, "invalid root node: %s", node );
95 /* root node should not have any attributes, and should only
96 * contain the "playlist node */
98 /* Skip until 1st child node */
99 while( (i_ret = xml_ReaderNextNode( p_xml_reader, &node )) != XML_READER_STARTELEM )
102 msg_Err( p_demux, "invalid file (no child node)" );
106 if( strcmp( node, "playlist" ) )
108 msg_Err( p_demux, "invalid child node %s", node );
112 // Read the attributes
113 const char *attr, *value;
114 while( (attr = xml_ReaderNextAttr( p_xml_reader, &value )) != NULL )
116 if( !strcmp( attr, "num_entries" ) )
117 msg_Dbg( p_demux, "playlist has %d entries", atoi(value) );
118 else if( !strcmp( attr, "label" ) )
119 input_item_SetName( p_current_input, value );
121 msg_Warn( p_demux, "stray attribute %s with value %s in element"
122 " <playlist>", attr, value );
125 p_subitems = input_item_node_Create( p_current_input );
127 while( (i_ret = xml_ReaderNextNode( p_xml_reader, &node )) > 0 )
132 case XML_READER_STARTELEM:
134 // Read the element name
136 psz_elname = strdup( node );
137 if( unlikely(!psz_elname) )
140 // Read the attributes
141 while( (attr = xml_ReaderNextAttr( p_xml_reader, &value )) )
143 if( !strcmp( psz_elname, "entry" ) &&
144 !strcmp( attr, "Playstring" ) )
147 psz_mrl = strdup( value );
151 msg_Warn( p_demux, "unexpected attribute %s in <%s>",
158 case XML_READER_TEXT:
162 if( psz_elname == NULL )
164 if( IsWhitespace( node ) )
166 if( !strcmp( psz_elname, "Name" ) )
168 else if( !strcmp( psz_elname, "Genre" ) )
170 else if( !strcmp( psz_elname, "Nowplaying" ) )
172 else if( !strcmp( psz_elname, "Listeners" ) )
174 else if( !strcmp( psz_elname, "Bitrate" ) )
178 msg_Warn( p_demux, "unexpected text in element <%s>",
188 case XML_READER_ENDELEM:
190 // Read the element name
191 if( !strcmp( node, "entry" ) )
193 p_input = input_item_New( psz_mrl, psz_title );
195 input_item_SetNowPlaying( p_input, psz_now );
197 input_item_SetGenre( p_input, psz_genre );
199 msg_Err( p_demux, "Unsupported meta listeners" );
201 msg_Err( p_demux, "Unsupported meta bitrate" );
203 input_item_node_AppendItem( p_subitems, p_input );
204 vlc_gc_decref( p_input );
205 FREENULL( psz_title );
207 FREENULL( psz_genre );
208 FREENULL( psz_bitrate );
209 FREENULL( psz_listeners );
212 FREENULL( psz_elname );
220 msg_Warn( p_demux, "error while parsing data" );
221 i_ret = 0; /* Needed for correct operation of go back */
228 input_item_node_PostAndDelete( p_subitems );
230 vlc_gc_decref( p_current_input );
232 xml_ReaderDelete( p_xml_reader );
236 static bool IsWhitespace( const char *psz_string )
238 psz_string += strspn( psz_string, " \t\r\n" );