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>
42 /*****************************************************************************
44 *****************************************************************************/
45 static int Demux( demux_t *p_demux);
46 static int Control( demux_t *p_demux, int i_query, va_list args );
47 static bool IsWhitespace( const char *psz_string );
49 /*****************************************************************************
50 * Import_B4S: main import function
51 *****************************************************************************/
52 int Import_B4S( vlc_object_t *p_this )
54 demux_t *demux = (demux_t *)p_this;
56 if( !demux_IsPathExtension( demux, ".b4s" )
57 && !demux_IsForced( demux, "b4s-open" ) )
60 demux->pf_demux = Demux;
61 demux->pf_control = Control;
66 static int Demux( demux_t *p_demux )
70 xml_reader_t *p_xml_reader = NULL;
71 char *psz_elname = NULL;
73 input_item_t *p_input;
74 char *psz_mrl = NULL, *psz_title = NULL, *psz_genre = NULL;
75 char *psz_now = NULL, *psz_listeners = NULL, *psz_bitrate = NULL;
76 input_item_node_t *p_subitems = NULL;
78 input_item_t *p_current_input = GetCurrentItem(p_demux);
80 free( stream_ReadLine( p_demux->s ) );
82 p_xml_reader = xml_ReaderCreate( p_demux, p_demux->s );
88 if( xml_ReaderNextNode( p_xml_reader, &node ) != XML_READER_STARTELEM )
90 msg_Err( p_demux, "invalid file (no root node)" );
94 if( strcmp( node, "WinampXML" ) )
96 msg_Err( p_demux, "invalid root node: %s", node );
100 /* root node should not have any attributes, and should only
101 * contain the "playlist node */
103 /* Skip until 1st child node */
104 while( (i_ret = xml_ReaderNextNode( p_xml_reader, &node )) != XML_READER_STARTELEM )
107 msg_Err( p_demux, "invalid file (no child node)" );
111 if( strcmp( node, "playlist" ) )
113 msg_Err( p_demux, "invalid child node %s", node );
117 // Read the attributes
118 const char *attr, *value;
119 while( (attr = xml_ReaderNextAttr( p_xml_reader, &value )) != NULL )
121 if( !strcmp( attr, "num_entries" ) )
122 msg_Dbg( p_demux, "playlist has %d entries", atoi(value) );
123 else if( !strcmp( attr, "label" ) )
124 input_item_SetName( p_current_input, value );
126 msg_Warn( p_demux, "stray attribute %s with value %s in element"
127 " <playlist>", attr, value );
130 p_subitems = input_item_node_Create( p_current_input );
132 while( (i_ret = xml_ReaderNextNode( p_xml_reader, &node )) > 0 )
137 case XML_READER_STARTELEM:
139 // Read the element name
141 psz_elname = strdup( node );
142 if( unlikely(!psz_elname) )
145 // Read the attributes
146 while( (attr = xml_ReaderNextAttr( p_xml_reader, &value )) )
148 if( !strcmp( psz_elname, "entry" ) &&
149 !strcmp( attr, "Playstring" ) )
152 psz_mrl = strdup( value );
156 msg_Warn( p_demux, "unexpected attribute %s in <%s>",
163 case XML_READER_TEXT:
167 if( psz_elname == NULL )
169 if( IsWhitespace( node ) )
171 if( !strcmp( psz_elname, "Name" ) )
173 else if( !strcmp( psz_elname, "Genre" ) )
175 else if( !strcmp( psz_elname, "Nowplaying" ) )
177 else if( !strcmp( psz_elname, "Listeners" ) )
179 else if( !strcmp( psz_elname, "Bitrate" ) )
183 msg_Warn( p_demux, "unexpected text in element <%s>",
193 case XML_READER_ENDELEM:
195 // Read the element name
196 if( !strcmp( node, "entry" ) )
198 p_input = input_item_New( psz_mrl, psz_title );
200 input_item_SetNowPlaying( p_input, psz_now );
202 input_item_SetGenre( p_input, psz_genre );
204 msg_Err( p_demux, "Unsupported meta listeners" );
206 msg_Err( p_demux, "Unsupported meta bitrate" );
208 input_item_node_AppendItem( p_subitems, p_input );
209 vlc_gc_decref( p_input );
210 FREENULL( psz_title );
212 FREENULL( psz_genre );
213 FREENULL( psz_bitrate );
214 FREENULL( psz_listeners );
217 FREENULL( psz_elname );
225 msg_Warn( p_demux, "error while parsing data" );
226 i_ret = 0; /* Needed for correct operation of go back */
233 input_item_node_PostAndDelete( p_subitems );
235 vlc_gc_decref( p_current_input );
237 xml_ReaderDelete( p_xml_reader );
241 static int Control( demux_t *p_demux, int i_query, va_list args )
243 VLC_UNUSED(p_demux); VLC_UNUSED(i_query); VLC_UNUSED(args);
247 static bool IsWhitespace( const char *psz_string )
249 psz_string += strspn( psz_string, " \t\r\n" );