shoutcast.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:15k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * shoutcast.c: Winamp >=5.2 shoutcast demuxer
- *****************************************************************************
- * Copyright (C) 2006 the VideoLAN team
- * $Id: e5257de3dd1d61b001f0f744e7b36e9367017d6e $
- *
- * Authors: Antoine Cellerier <dionoea -@t- videolan -Dot- org>
- * based on b4s.c by Sigmund Augdal Helberg <dnumgis@videolan.org>
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include <vlc_demux.h>
- #include "playlist.h"
- #include "vlc_xml.h"
- struct demux_sys_t
- {
- input_item_t *p_current_input;
- xml_t *p_xml;
- xml_reader_t *p_xml_reader;
- bool b_adult;
- };
- /* duplicate from modules/services_discovery/shout.c */
- #define SHOUTCAST_BASE_URL "http/shout-winamp://www.shoutcast.com/sbin/newxml.phtml"
- #define SHOUTCAST_TUNEIN_BASE_URL "http://www.shoutcast.com"
- #define SHOUTCAST_TV_TUNEIN_URL "http://www.shoutcast.com/sbin/tunein-tvstation.pls?id="
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- static int Demux( demux_t *p_demux);
- static int Control( demux_t *p_demux, int i_query, va_list args );
- static int DemuxGenre( demux_t *p_demux );
- static int DemuxStation( demux_t *p_demux );
- /*****************************************************************************
- * Import_Shoutcast: main import function
- *****************************************************************************/
- int Import_Shoutcast( vlc_object_t *p_this )
- {
- demux_t *p_demux = (demux_t *)p_this;
- if( !demux_IsForced( p_demux, "shout-winamp" ) )
- return VLC_EGENERIC;
- STANDARD_DEMUX_INIT_MSG( "using shoutcast playlist reader" );
- p_demux->p_sys->p_xml = NULL;
- p_demux->p_sys->p_xml_reader = NULL;
- /* Do we want to list adult content ? */
- var_Create( p_demux, "shoutcast-show-adult",
- VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
- p_demux->p_sys->b_adult = var_GetBool( p_demux, "shoutcast-show-adult" );
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Deactivate: frees unused data
- *****************************************************************************/
- void Close_Shoutcast( vlc_object_t *p_this )
- {
- demux_t *p_demux = (demux_t *)p_this;
- demux_sys_t *p_sys = p_demux->p_sys;
- if( p_sys->p_xml_reader )
- xml_ReaderDelete( p_sys->p_xml, p_sys->p_xml_reader );
- if( p_sys->p_xml )
- xml_Delete( p_sys->p_xml );
- free( p_sys );
- }
- static int Demux( demux_t *p_demux )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- xml_t *p_xml;
- xml_reader_t *p_xml_reader;
- char *psz_eltname = NULL;
- INIT_PLAYLIST_STUFF;
- p_sys->p_current_input = p_current_input;
- p_xml = p_sys->p_xml = xml_Create( p_demux );
- if( !p_xml ) return -1;
- p_xml_reader = xml_ReaderCreate( p_xml, p_demux->s );
- if( !p_xml_reader ) return -1;
- p_sys->p_xml_reader = p_xml_reader;
- /* check root node */
- if( xml_ReaderRead( p_xml_reader ) != 1 )
- {
- msg_Err( p_demux, "invalid file (no root node)" );
- return -1;
- }
- if( xml_ReaderNodeType( p_xml_reader ) != XML_READER_STARTELEM ||
- ( psz_eltname = xml_ReaderName( p_xml_reader ) ) == NULL ||
- ( strcmp( psz_eltname, "genrelist" )
- && strcmp( psz_eltname, "stationlist" ) ) )
- {
- msg_Err( p_demux, "invalid root node %i, %s",
- xml_ReaderNodeType( p_xml_reader ), psz_eltname );
- free( psz_eltname );
- return -1;
- }
- if( !strcmp( psz_eltname, "genrelist" ) )
- {
- /* we're reading a genre list */
- free( psz_eltname );
- if( DemuxGenre( p_demux ) ) return -1;
- }
- else
- {
- /* we're reading a station list */
- free( psz_eltname );
- if( DemuxStation( p_demux ) ) return -1;
- }
- HANDLE_PLAY_AND_RELEASE;
- return 0; /* Needed for correct operation of go back */
- }
- #define GET_VALUE( a )
- if( !strcmp( psz_attrname, #a ) )
- {
- psz_ ## a = strdup( psz_attrvalue );
- }
- /* <genrelist>
- * <genre name="the name"></genre>
- * ...
- * </genrelist>
- **/
- static int DemuxGenre( demux_t *p_demux )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- char *psz_name = NULL; /* genre name */
- char *psz_eltname = NULL; /* tag name */
- input_item_t *p_input;
- while( xml_ReaderRead( p_sys->p_xml_reader ) == 1 )
- {
- int i_type;
- // Get the node type
- i_type = xml_ReaderNodeType( p_sys->p_xml_reader );
- switch( i_type )
- {
- // Error
- case -1:
- return -1;
- break;
- case XML_READER_STARTELEM:
- // Read the element name
- psz_eltname = xml_ReaderName( p_sys->p_xml_reader );
- if( !psz_eltname ) return -1;
- if( !strcmp( psz_eltname, "genre" ) )
- {
- // Read the attributes
- while( xml_ReaderNextAttr( p_sys->p_xml_reader ) == VLC_SUCCESS )
- {
- char *psz_attrname = xml_ReaderName( p_sys->p_xml_reader );
- char *psz_attrvalue =
- xml_ReaderValue( p_sys->p_xml_reader );
- if( !psz_attrname || !psz_attrvalue )
- {
- FREENULL(psz_attrname);
- FREENULL(psz_attrvalue);
- free(psz_eltname);
- /*FIXME: isn't return a bit too much. what about break*/
- return -1;
- }
- GET_VALUE( name )
- else
- {
- msg_Warn( p_demux,
- "unexpected attribure %s in element %s",
- psz_attrname,psz_eltname );
- }
- free( psz_attrname );
- free( psz_attrvalue );
- }
- }
- free( psz_eltname ); psz_eltname = NULL;
- break;
- case XML_READER_TEXT:
- break;
- // End element
- case XML_READER_ENDELEM:
- // Read the element name
- psz_eltname = xml_ReaderName( p_sys->p_xml_reader );
- if( !psz_eltname ) return -1;
- if( !strcmp( psz_eltname, "genre" ) )
- {
- char* psz_mrl;
- if( asprintf( &psz_mrl, SHOUTCAST_BASE_URL "?genre=%s",
- psz_name ) != -1 )
- {
- p_input = input_item_New( p_demux, psz_mrl, psz_name );
- input_item_CopyOptions( p_sys->p_current_input, p_input );
- free( psz_mrl );
- input_item_AddSubItem( p_sys->p_current_input, p_input );
- vlc_gc_decref( p_input );
- }
- FREENULL( psz_name );
- }
- FREENULL( psz_eltname );
- break;
- }
- }
- return 0;
- }
- /* radio stations:
- * <stationlist>
- * <tunein base="/sbin/tunein-station.pls"></tunein>
- * <station name="the name"
- * mt="mime type"
- * id="the id"
- * br="bit rate"
- * genre="A big genre string"
- * ct="current track name/author/..."
- * lc="listener count"></station>
- * </stationlist>
- *
- * TV stations:
- * <stationlist>
- * <tunein base="/sbin/tunein-station.pls"></tunein>
- * <station name="the name"
- * id="the id"
- * br="bit rate"
- * rt="rating"
- * load="server load ?"
- * ct="current track name/author/..."
- * genre="A big genre string"
- * lc="listener count"></station>
- * </stationlist>
- **/
- static int DemuxStation( demux_t *p_demux )
- {
- demux_sys_t *p_sys = p_demux->p_sys;
- input_item_t *p_input;
- char *psz_base = NULL; /* */
- char *psz_name = NULL; /* genre name */
- char *psz_mt = NULL; /* mime type */
- char *psz_id = NULL; /* id */
- char *psz_br = NULL; /* bit rate */
- char *psz_genre = NULL; /* genre */
- char *psz_ct = NULL; /* current track */
- char *psz_lc = NULL; /* listener count */
- /* If these are set then it's *not* a radio but a TV */
- char *psz_rt = NULL; /* rating for shoutcast TV */
- char *psz_load = NULL; /* load for shoutcast TV */
- char *psz_eltname = NULL; /* tag name */
- while( xml_ReaderRead( p_sys->p_xml_reader ) == 1 )
- {
- int i_type;
- // Get the node type
- i_type = xml_ReaderNodeType( p_sys->p_xml_reader );
- switch( i_type )
- {
- // Error
- case -1:
- return -1;
- break;
- case XML_READER_STARTELEM:
- // Read the element name
- psz_eltname = xml_ReaderName( p_sys->p_xml_reader );
- if( !psz_eltname ) return -1;
- // Read the attributes
- if( !strcmp( psz_eltname, "tunein" ) )
- {
- while( xml_ReaderNextAttr( p_sys->p_xml_reader ) == VLC_SUCCESS )
- {
- char *psz_attrname = xml_ReaderName( p_sys->p_xml_reader );
- char *psz_attrvalue =
- xml_ReaderValue( p_sys->p_xml_reader );
- if( !psz_attrname || !psz_attrvalue )
- {
- free( psz_eltname );
- free( psz_attrname );
- free( psz_attrvalue );
- return -1;
- }
- GET_VALUE( base )
- else
- {
- msg_Warn( p_demux,
- "unexpected attribure %s in element %s",
- psz_attrname, psz_eltname );
- }
- free( psz_attrname );
- free( psz_attrvalue );
- }
- }
- else if( !strcmp( psz_eltname, "station" ) )
- {
- while( xml_ReaderNextAttr( p_sys->p_xml_reader ) == VLC_SUCCESS )
- {
- char *psz_attrname = xml_ReaderName( p_sys->p_xml_reader );
- char *psz_attrvalue =
- xml_ReaderValue( p_sys->p_xml_reader );
- if( !psz_attrname || !psz_attrvalue )
- {
- free( psz_eltname );
- free( psz_attrname );
- free( psz_attrvalue );
- return -1;
- }
- GET_VALUE( name )
- else GET_VALUE( mt )
- else GET_VALUE( id )
- else GET_VALUE( br )
- else GET_VALUE( genre )
- else GET_VALUE( ct )
- else GET_VALUE( lc )
- else GET_VALUE( rt )
- else GET_VALUE( load )
- else
- {
- msg_Warn( p_demux,
- "unexpected attribute %s in element %s",
- psz_attrname, psz_eltname );
- }
- free( psz_attrname );
- free( psz_attrvalue );
- }
- }
- free( psz_eltname );
- break;
- case XML_READER_TEXT:
- break;
- // End element
- case XML_READER_ENDELEM:
- // Read the element name
- psz_eltname = xml_ReaderName( p_sys->p_xml_reader );
- if( !psz_eltname ) return -1;
- if( !strcmp( psz_eltname, "station" ) &&
- ( psz_base || ( psz_rt && psz_load &&
- ( p_sys->b_adult || strcmp( psz_rt, "NC17" ) ) ) ) )
- {
- char *psz_mrl = NULL;
- if( psz_rt || psz_load )
- {
- /* tv */
- if( asprintf( &psz_mrl, SHOUTCAST_TV_TUNEIN_URL "%s",
- psz_id ) == -1)
- psz_mrl = NULL;
- }
- else
- {
- /* radio */
- if( asprintf( &psz_mrl, SHOUTCAST_TUNEIN_BASE_URL "%s?id=%s",
- psz_base, psz_id ) == -1 )
- psz_mrl = NULL;
- }
- p_input = input_item_New( p_demux, psz_mrl, psz_name );
- input_item_CopyOptions( p_sys->p_current_input, p_input );
- free( psz_mrl );
- #define SADD_INFO( type, field )
- if( field )
- input_item_AddInfo( p_input, _("Shoutcast"),
- vlc_gettext(type), "%s", field )
- SADD_INFO( N_("Mime"), psz_mt );
- SADD_INFO( N_("Bitrate"), psz_br );
- SADD_INFO( N_("Listeners"), psz_lc );
- SADD_INFO( N_("Load"), psz_load );
- if( psz_genre )
- input_item_SetGenre( p_input, psz_genre );
- if( psz_ct )
- input_item_SetNowPlaying( p_input, psz_ct );
- if( psz_rt )
- input_item_SetRating( p_input, psz_rt );
- input_item_AddSubItem( p_sys->p_current_input, p_input );
- vlc_gc_decref( p_input );
- FREENULL( psz_name );
- FREENULL( psz_mt );
- FREENULL( psz_id );
- FREENULL( psz_br );
- FREENULL( psz_genre );
- FREENULL( psz_ct );
- FREENULL( psz_lc );
- FREENULL( psz_rt );
- }
- free( psz_eltname );
- break;
- }
- }
- return 0;
- }
- static int Control( demux_t *p_demux, int i_query, va_list args )
- {
- VLC_UNUSED(p_demux); VLC_UNUSED(i_query); VLC_UNUSED(args);
- return VLC_EGENERIC;
- }