+++ /dev/null
-/*****************************************************************************
- * dynamic_media_list.c: libvlc new API media list functions
- *****************************************************************************
- * Copyright (C) 2007 the VideoLAN team
- * $Id$
- *
- * Authors: Pierre d'Herbemont <pdherbemont # 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.
- *****************************************************************************/
-
-#include "libvlc_internal.h"
-#include <vlc/libvlc.h>
-#include <assert.h>
-#include "vlc_arrays.h"
-
-static const char * libvlc_default_dynamic_media_list_tag_key = "VLCPlaylist";
-
-/*
- * Private functions
- */
-
-/**************************************************************************
- * own_media_list_item_added (private) (Event Callback)
- **************************************************************************/
-static void
-own_media_list_item_added( const libvlc_event_t * p_event, void * p_user_data )
-{
- /* Add our tag */
- libvlc_dynamic_media_list_t * p_dmlist = p_user_data;
- libvlc_media_descriptor_t * p_md = p_event->u.media_list_item_added.item;
-
- if( !p_dmlist->tag || !p_dmlist->psz_tag_key )
- return;
-
- libvlc_media_descriptor_add_tag( p_md, p_dmlist->tag,
- p_dmlist->psz_tag_key, NULL );
-}
-
-/**************************************************************************
- * own_media_list_item_removed (private) (Event Callback)
- **************************************************************************/
-static void
-own_media_list_item_deleted( const libvlc_event_t * p_event, void * p_user_data )
-{
- /* Remove our tag */
- libvlc_dynamic_media_list_t * p_dmlist = p_user_data;
- libvlc_media_descriptor_t * p_md = p_event->u.media_list_item_added.item;
-
- if( !p_dmlist->tag || !p_dmlist->psz_tag_key )
- return;
-
- libvlc_media_descriptor_remove_tag( p_md, p_dmlist->tag,
- p_dmlist->psz_tag_key, NULL );
-}
-
-
-/**************************************************************************
- * dynamic_list_propose_item (private) (Event Callback)
- *
- * This is called if the dynamic sublist's data provider adds a new item.
- **************************************************************************/
-static void
-dynamic_list_propose_item( const libvlc_event_t * p_event, void * p_user_data )
-{
- /* Check if the item matches our tag query */
- libvlc_dynamic_media_list_t * p_dmlist = p_user_data;
- libvlc_media_descriptor_t * p_md = p_event->u.media_list_item_added.item;
-
- //libvlc_media_descriptor_lock( p_md );
- if( libvlc_tag_query_match( p_dmlist->p_query, p_md, NULL ) )
- {
- int i = libvlc_media_list_index_of_item( p_dmlist->p_mlist, p_md, NULL );
- if( i >= 0 )
- {
- /* We already have it */
- libvlc_media_list_unlock( p_dmlist->p_mlist );
- return;
- }
-
- libvlc_media_list_lock( p_dmlist->p_mlist );
- libvlc_media_list_add_media_descriptor( p_dmlist->p_mlist, p_md, NULL );
- libvlc_media_list_unlock( p_dmlist->p_mlist );
- }
- //libvlc_media_descriptor_unlock( p_md );
-}
-
-/**************************************************************************
- * dynamic_list_remove_item (private) (Event Callback)
- *
- * This is called if the dynamic sublist's data provider adds a new item.
- **************************************************************************/
-static void
-dynamic_list_remove_item( const libvlc_event_t * p_event, void * p_user_data )
-{
- /* Remove the item here too if we have it */
- libvlc_dynamic_media_list_t * p_dmlist = p_user_data;
- libvlc_media_descriptor_t * p_md = p_event->u.media_list_item_deleted.item;
-
- //libvlc_media_descriptor_lock( p_md );
- if( libvlc_tag_query_match( p_dmlist->p_query, p_md, NULL ) )
- {
- int i;
- libvlc_media_list_lock( p_dmlist->p_mlist );
- i = libvlc_media_list_index_of_item( p_dmlist->p_mlist, p_md, NULL );
- if ( i < 0 )
- {
- /* We've missed one item addition, that could happen especially
- * if we add item in a threaded maner, so we just ignore */
- libvlc_media_list_unlock( p_dmlist->p_mlist );
- //libvlc_media_descriptor_unlock( p_md );
- return;
- }
- libvlc_media_list_remove_index( p_dmlist->p_mlist, i, NULL );
- libvlc_media_list_unlock( p_dmlist->p_mlist );
- }
- //libvlc_media_descriptor_unlock( p_md );
-}
-
-/*
- * Public libvlc functions
- */
-
-/**************************************************************************
- * new (Public)
- **************************************************************************/
-libvlc_dynamic_media_list_t *
-libvlc_dynamic_media_list_new(
- libvlc_media_list_t * p_mlist,
- libvlc_tag_query_t * p_query,
- libvlc_tag_t tag,
- libvlc_exception_t * p_e )
-{
- libvlc_dynamic_media_list_t * p_dmlist;
- libvlc_event_manager_t * p_em;
- int count, i;
-
- (void)p_e;
-
- p_dmlist = malloc(sizeof(libvlc_dynamic_media_list_t));
-
- if( !p_mlist )
- return NULL;
-
- p_dmlist->i_refcount = 1;
- p_dmlist->p_libvlc_instance = p_mlist->p_libvlc_instance;
- p_dmlist->tag = strdup( tag );
- p_dmlist->psz_tag_key = strdup( libvlc_default_dynamic_media_list_tag_key );
-
- p_dmlist->p_mlist = libvlc_media_list_new( p_mlist->p_libvlc_instance, p_e );
- if( !p_dmlist->p_mlist )
- {
- if( !libvlc_exception_raised( p_e ) )
- libvlc_exception_raise( p_e, "Can't get the new media_list" );
- return NULL;
- }
-
- /* We have a query */
- libvlc_tag_query_retain( p_query );
- p_dmlist->p_query = p_query;
-
- /* We have a media provider */
- libvlc_media_list_retain( p_mlist );
- p_dmlist->p_media_provider = p_mlist;
-
- libvlc_media_list_lock( p_mlist );
-
- count = libvlc_media_list_count( p_mlist, p_e );
-
- /* This should be running in a thread, a good plan to achieve that
- * move all the dynamic code to libvlc_tag_query. */
- for( i = 0; i < count; i++ )
- {
- libvlc_media_descriptor_t * p_md;
- p_md = libvlc_media_list_item_at_index( p_mlist, i, p_e );
- if( libvlc_tag_query_match( p_query, p_md, NULL ) )
- libvlc_media_list_add_media_descriptor( p_dmlist->p_mlist, p_md, p_e );
- }
-
- /* And we will listen to its event, so we can update p_dmlist->p_mlist
- * accordingly */
- p_em = libvlc_media_list_event_manager( p_mlist, p_e );
- libvlc_event_attach( p_em, libvlc_MediaListItemAdded,
- dynamic_list_propose_item, p_dmlist, p_e );
- libvlc_event_attach( p_em, libvlc_MediaListItemDeleted,
- dynamic_list_remove_item, p_dmlist, p_e );
-
- libvlc_media_list_unlock( p_mlist );
-
- /* Make sure item added/removed will gain/loose our mark */
- p_em = libvlc_media_list_event_manager( p_dmlist->p_mlist, p_e );
- libvlc_event_attach( p_em, libvlc_MediaListItemAdded,
- own_media_list_item_added, p_dmlist, p_e );
- libvlc_event_attach( p_em, libvlc_MediaListItemDeleted,
- own_media_list_item_deleted, p_dmlist, p_e );
-
-
- return p_dmlist;
-}
-
-/**************************************************************************
- * release (Public)
- *
- * Release an object.
- **************************************************************************/
-void libvlc_dynamic_media_list_release( libvlc_dynamic_media_list_t * p_dmlist )
-{
- p_dmlist->i_refcount--;
- if( p_dmlist->i_refcount > 0 )
- return;
-
- free( p_dmlist->tag );
- free( p_dmlist->psz_tag_key );
-
- /* Refcount null, time to free */
- if( p_dmlist->p_media_provider )
- libvlc_media_list_release( p_dmlist->p_media_provider );
-
- if( p_dmlist->p_query )
- libvlc_tag_query_release( p_dmlist->p_query );
-
- free( p_dmlist );
-}
-
-/**************************************************************************
- * retain (Public)
- **************************************************************************/
-void libvlc_dynamic_media_list_retain( libvlc_dynamic_media_list_t * p_dmlist )
-{
- p_dmlist->i_refcount++;
-}
-
-
-/**************************************************************************
- * media_list (Public)
- **************************************************************************/
-libvlc_media_list_t *
-libvlc_dynamic_media_list_media_list(
- libvlc_dynamic_media_list_t * p_dmlist,
- libvlc_exception_t * p_e )
-{
- VLC_UNUSED(p_e);
-
- libvlc_media_list_retain( p_dmlist->p_mlist );
- return p_dmlist->p_mlist;
-}
projects / vlc / commitdiff