1 /*****************************************************************************
2 * id3.c: simple id3 tag skipper
3 *****************************************************************************
4 * Copyright (C) 2001 VideoLAN
7 * Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
31 #include <vlc/input.h>
33 /*****************************************************************************
35 *****************************************************************************/
36 static int SkipID3Tag ( vlc_object_t * );
38 /*****************************************************************************
40 *****************************************************************************/
42 set_description( _("Simple id3 tag skipper" ) );
43 set_capability( "id3", 50 );
44 set_callbacks( SkipID3Tag, NULL );
47 /****************************************************************************
48 * SkipID3Tag : check if an ID3 tag is present, and skip it if it is
49 ****************************************************************************/
50 static int SkipID3Tag( vlc_object_t *p_this )
52 demux_t *p_demux = (demux_t *)p_this;
55 uint8_t version, revision;
58 p_demux->p_private = NULL;
60 msg_Dbg( p_demux, "checking for ID3 tag" );
62 /* get 10 byte id3 header */
63 if( stream_Peek( p_demux->s, &p_peek, 10 ) < 10 )
65 msg_Err( p_demux, "cannot peek()" );
69 if( p_peek[0] != 'I' || p_peek[1] != 'D' || p_peek[2] != '3' )
74 version = p_peek[3]; /* These may become usfull later, */
75 revision = p_peek[4]; /* but we ignore them for now */
76 b_footer = p_peek[5] & 0x10;
77 i_size = (p_peek[6] << 21) +
87 /* Skip the entire tag */
88 stream_Read( p_demux->s, NULL, i_size );
90 msg_Dbg( p_demux, "ID3v2.%d revision %d tag found, skiping %d bytes",
91 version, revision, i_size );