m3u.c
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上传日期:2009-03-27
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- /*****************************************************************************
- * m3u.c : M3U playlist format import
- *****************************************************************************
- * Copyright (C) 2004 VideoLAN
- * $Id: m3u.c 8157 2004-07-09 15:15:07Z gbazin $
- *
- * Authors: Cl閙ent Stenac <zorglub@videolan.org>
- * Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
- *
- * 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #include <stdlib.h> /* malloc(), free() */
- #include <vlc/vlc.h>
- #include <vlc/input.h>
- #include <vlc/intf.h>
- #include <errno.h> /* ENOMEM */
- #include "playlist.h"
- struct demux_sys_t
- {
- char *psz_prefix;
- };
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- static int Demux( demux_t *p_demux);
- static int Control( demux_t *p_demux, int i_query, va_list args );
- /*****************************************************************************
- * Import_M3U: main import function
- *****************************************************************************/
- int Import_M3U( vlc_object_t *p_this )
- {
- demux_t *p_demux = (demux_t *)p_this;
- uint8_t *p_peek;
- char *psz_ext;
- if( stream_Peek( p_demux->s , &p_peek, 7 ) < 7 )
- {
- return VLC_EGENERIC;
- }
- psz_ext = strrchr ( p_demux->psz_path, '.' );
- if( !strncmp( p_peek, "#EXTM3U", 7 ) )
- {
- ;
- }
- else if( ( psz_ext && !strcasecmp( psz_ext, ".m3u") ) ||
- ( psz_ext && !strcasecmp( psz_ext, ".ram") ) ||
- /* A .ram file can contain a single rtsp link */
- ( p_demux->psz_demux && !strcmp(p_demux->psz_demux, "m3u") ) )
- {
- ;
- }
- else
- {
- return VLC_EGENERIC;
- }
- msg_Dbg( p_demux, "found valid M3U playlist file");
- p_demux->pf_control = Control;
- p_demux->pf_demux = Demux;
- p_demux->p_sys = malloc( sizeof(demux_sys_t) );
- if( p_demux->p_sys == NULL )
- {
- msg_Err( p_demux, "Out of memory" );
- return VLC_ENOMEM;
- }
- p_demux->p_sys->psz_prefix = FindPrefix( p_demux );
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Deactivate: frees unused data
- *****************************************************************************/
- void Close_M3U( vlc_object_t *p_this )
- {
- demux_t *p_demux = (demux_t *)p_this;
- if( p_demux->p_sys->psz_prefix ) free( p_demux->p_sys->psz_prefix );
- free( p_demux->p_sys );
- }
- static int Demux( demux_t *p_demux )
- {
- playlist_t *p_playlist;
- char *psz_line;
- int i_position;
- char *psz_name = NULL;
- mtime_t i_duration = -1;
- char **ppsz_options = NULL;
- int i_options = 0;
- vlc_bool_t b_cleanup = VLC_FALSE;
- p_playlist = (playlist_t *) vlc_object_find( p_demux, VLC_OBJECT_PLAYLIST,
- FIND_PARENT );
- if( !p_playlist )
- {
- msg_Err( p_demux, "can't find playlist" );
- return -1;
- }
- vlc_mutex_lock( &p_playlist->object_lock );
- p_playlist->pp_items[p_playlist->i_index]->b_autodeletion = VLC_TRUE;
- i_position = p_playlist->i_index + 1;
- vlc_mutex_unlock( &p_playlist->object_lock );
- psz_line = stream_ReadLine( p_demux->s );
- while( psz_line )
- {
- char *psz_parse = psz_line;
- /* Skip leading tabs and spaces */
- while( *psz_parse == ' ' || *psz_parse == 't' ||
- *psz_parse == 'n' || *psz_parse == 'r' ) psz_parse++;
- if( *psz_parse == '#' )
- {
- /* Parse extra info */
- /* Skip leading tabs and spaces */
- while( *psz_parse == ' ' || *psz_parse == 't' ||
- *psz_parse == 'n' || *psz_parse == 'r' ||
- *psz_parse == '#' ) psz_parse++;
- if( !*psz_parse ) goto error;
- if( !strncasecmp( psz_parse, "EXTINF:", sizeof("EXTINF:") -1 ) )
- {
- /* Extended info */
- char *psz_duration;
- psz_parse += sizeof("EXTINF:") - 1;
- while( *psz_parse == 't' || *psz_parse == ' ' ) psz_parse++;
- psz_duration = psz_parse;
- psz_parse = strchr( psz_parse, ',' );
- if( psz_parse )
- {
- *psz_parse = ' ';
- psz_parse++;
- psz_name = strdup( psz_parse );
- i_duration = atoi( psz_duration );
- if( i_duration != -1 ) i_duration *= 1000000;
- }
- }
- else if( !strncasecmp( psz_parse, "EXTVLCOPT:",
- sizeof("EXTVLCOPT:") -1 ) )
- {
- /* VLC Option */
- char *psz_option;
- psz_parse += sizeof("EXTVLCOPT:") -1;
- if( !*psz_parse ) goto error;
- psz_option = strdup( psz_parse );
- if( psz_option )
- INSERT_ELEM( ppsz_options, i_options, i_options,
- psz_option );
- }
- }
- else if( *psz_parse )
- {
- char *psz_mrl =
- ProcessMRL( psz_parse, p_demux->p_sys->psz_prefix );
- b_cleanup = VLC_TRUE;
- if( !psz_mrl ) goto error;
- playlist_AddExt( p_playlist, psz_mrl, psz_name,
- PLAYLIST_INSERT, i_position, i_duration,
- (const char **)ppsz_options, i_options );
- i_position++;
- free( psz_mrl );
- }
- error:
- /* Fetch another line */
- free( psz_line );
- psz_line = stream_ReadLine( p_demux->s );
- if( !psz_line ) b_cleanup = VLC_TRUE;
- if( b_cleanup )
- {
- /* Cleanup state */
- while( i_options-- ) free( ppsz_options[i_options] );
- if( ppsz_options ) free( ppsz_options );
- ppsz_options = NULL; i_options = 0;
- if( psz_name ) free( psz_name );
- psz_name = NULL;
- i_duration = -1;
- b_cleanup = VLC_FALSE;
- }
- }
- vlc_object_release( p_playlist );
- return VLC_SUCCESS;
- }
- static int Control( demux_t *p_demux, int i_query, va_list args )
- {
- return VLC_EGENERIC;
- }