pls.c
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上传日期:2009-03-27
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文件大小:8k
- /*****************************************************************************
- * pls.c : PLS playlist format import
- *****************************************************************************
- * Copyright (C) 2004 VideoLAN
- * $Id: pls.c 8030 2004-06-22 21:22:13Z 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_PLS: main import function
- *****************************************************************************/
- int Import_PLS( 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 )
- {
- msg_Err( p_demux, "cannot peek" );
- return VLC_EGENERIC;
- }
- psz_ext = strrchr ( p_demux->psz_path, '.' );
- if( !strncasecmp( p_peek, "[playlist]", 10 ) )
- {
- ;
- }
- else if( ( psz_ext && !strcasecmp( psz_ext, ".pls") ) ||
- ( p_demux->psz_demux && !strcmp(p_demux->psz_demux, "pls") ) )
- {
- ;
- }
- else
- {
- msg_Warn(p_demux, "pls import module discarded");
- return VLC_EGENERIC;
-
- }
- msg_Dbg( p_demux, "found valid PLS 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_PLS( 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 )
- {
- mtime_t i_duration = -1;
- char *psz_name = NULL;
- char *psz_line;
- char *psz_mrl = NULL;
- char *psz_key;
- char *psz_value;
- playlist_t *p_playlist;
- int i_position;
- int i_item = -1;
- int i_new_item = 0;
- int i_key_length;
- 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;
- }
- p_playlist->pp_items[p_playlist->i_index]->b_autodeletion = VLC_TRUE;
- i_position = p_playlist->i_index + 1;
- while( ( psz_line = stream_ReadLine( p_demux->s ) ) )
- {
- if( !strncasecmp( psz_line, "[playlist]", sizeof("[playlist]")-1 ) )
- {
- free( psz_line );
- continue;
- }
- psz_key = psz_line;
- psz_value = strchr( psz_line, '=' );
- if( psz_value )
- {
- *psz_value=' ';
- psz_value++;
- }
- else
- {
- msg_Warn( p_demux, "invalid line in pls file" );
- free( psz_line );
- continue;
- }
- if( !strcasecmp( psz_key, "version" ) )
- {
- msg_Dbg( p_demux, "pls file version: %s", psz_value );
- free( psz_line );
- continue;
- }
- /* find the number part of of file1, title1 or length1 etc */
- i_key_length = strlen( psz_key );
- if( i_key_length >= 5 ) /* file1 type case */
- {
- i_new_item = atoi( psz_key + 4 );
- if( i_new_item == 0 && i_key_length >= 6 ) /* title1 type case */
- {
- i_new_item = atoi( psz_key + 5 );
- if( i_new_item == 0 && i_key_length >= 7 ) /* length1 type case */
- {
- i_new_item = atoi( psz_key + 6 );
- }
- }
- }
- if( i_new_item == 0 )
- {
- msg_Warn( p_demux, "couldn't find number of items" );
- free( psz_line );
- continue;
- }
- if( i_item == -1 )
- {
- i_item = i_new_item;
- }
- /* we found a new item, insert the previous */
- if( i_item != i_new_item )
- {
- if( psz_mrl )
- {
- playlist_Add( p_playlist, psz_mrl, psz_name,
- PLAYLIST_INSERT, i_position );
- if( i_duration != -1 )
- {
- playlist_SetDuration( p_playlist, i_position, i_duration );
- }
- i_position++;
- free( psz_mrl );
- psz_mrl = NULL;
- }
- else
- {
- msg_Warn( p_demux, "no file= part found for item %d", i_item );
- }
- if( psz_name )
- {
- free( psz_name );
- psz_name = NULL;
- }
- i_duration = -1;
- i_item = i_new_item;
- i_new_item = 0;
- }
- if( !strncasecmp( psz_key, "file", sizeof("file") -1 ) )
- {
- psz_mrl = ProcessMRL( psz_value, p_demux->p_sys->psz_prefix );
- }
- else if( !strncasecmp( psz_key, "title", sizeof("title") -1 ) )
- {
- psz_name = strdup( psz_value );
- }
- else if( !strncasecmp( psz_key, "length", sizeof("length") -1 ) )
- {
- i_duration = atoi( psz_value );
- if( i_duration != -1 )
- {
- i_duration *= 1000000;
- }
- }
- else
- {
- msg_Warn( p_demux, "unknown key found in pls file: %s", psz_key );
- }
- free( psz_line );
- }
- /* Add last object */
- if( psz_mrl )
- {
- playlist_Add( p_playlist, psz_mrl, psz_name,
- PLAYLIST_INSERT, i_position );
- if( i_duration != -1 )
- {
- playlist_SetDuration( p_playlist, i_position, i_duration );
- }
- i_position++;
- free( psz_mrl );
- psz_mrl = NULL;
- }
- else
- {
- msg_Warn( p_demux, "no file= part found for item %d", i_item );
- }
- if( psz_name )
- {
- free( psz_name );
- psz_name = NULL;
- }
- vlc_object_release( p_playlist );
- return VLC_SUCCESS;
- }
- static int Control( demux_t *p_demux, int i_query, va_list args )
- {
- return VLC_EGENERIC;
- }