Commit e8d38b44 authored by Pierre d'Herbemont's avatar Pierre d'Herbemont

control/hierarchical_node_media_list_view.c: Implement a view that only show...

control/hierarchical_node_media_list_view.c: Implement a view that only show the node of the media list, hierarchically.
parent 7910ae7a
......@@ -341,6 +341,7 @@ SOURCES_libvlc_control = \
control/event.c \
control/flat_media_list_view.c \
control/hierarchical_media_list_view.c \
control/hierarchical_node_media_list_view.c \
control/media_descriptor.c \
control/media_instance.c \
control/media_list.c \
......
/*****************************************************************************
* hierarchical_node_media_list_view.c: libvlc hierarchical nodes media list
* view functs.
*****************************************************************************
* 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"
/* FIXME: This version is probably a bit overheaded, and we may want to store
* the items in a vlc_array_t to speed everything up */
//#define DEBUG_HIERARCHICAL_VIEW
#ifdef DEBUG_HIERARCHICAL_VIEW
# define trace( fmt, ... ) printf( "[HIERARCHICAL_NODE] %s(): " fmt, __FUNCTION__, ##__VA_ARGS__ )
#else
# define trace( ... )
#endif
struct libvlc_media_list_view_private_t
{
vlc_array_t array;
};
/*
* Private functions
*/
/**************************************************************************
* flat_media_list_view_count (private)
* (called by media_list_view_count)
**************************************************************************/
static int
hierarch_node_media_list_view_count( libvlc_media_list_view_t * p_mlv,
libvlc_exception_t * p_e )
{
/* FIXME: we may want to cache that */
int i, ret, count = libvlc_media_list_count( p_mlv->p_mlist, p_e );
libvlc_media_descriptor_t * p_md;
libvlc_media_list_t * p_submlist;
ret = 0;
trace("\n");
for( i = 0; i < count; i++ )
{
p_md = libvlc_media_list_item_at_index( p_mlv->p_mlist, i, p_e );
if( !p_md ) continue;
p_submlist = libvlc_media_descriptor_subitems( p_md, p_e );
if( !p_submlist ) continue;
libvlc_media_descriptor_release( p_md );
libvlc_media_list_release( p_submlist );
ret++;
}
return ret;
}
/**************************************************************************
* flat_media_list_view_item_at_index (private)
* (called by flat_media_list_view_item_at_index)
**************************************************************************/
static libvlc_media_descriptor_t *
hierarch_node_media_list_view_item_at_index( libvlc_media_list_view_t * p_mlv,
int index,
libvlc_exception_t * p_e )
{
/* FIXME: we may want to cache that */
libvlc_media_descriptor_t * p_md;
libvlc_media_list_t * p_submlist;
trace("%d\n", index);
int i, current_index, count = libvlc_media_list_count( p_mlv->p_mlist, p_e );
current_index = -1;
for( i = 0; i < count; i++ )
{
p_md = libvlc_media_list_item_at_index( p_mlv->p_mlist, i, p_e );
if( !p_md ) continue;
p_submlist = libvlc_media_descriptor_subitems( p_md, p_e );
if( !p_submlist ) continue;
libvlc_media_list_release( p_submlist );
current_index++;
if( current_index == index )
return p_md;
libvlc_media_descriptor_release( p_md );
}
libvlc_exception_raise( p_e, "Index out of bound in Media List View" );
return NULL;
}
/**************************************************************************
* flat_media_list_view_item_at_index (private)
* (called by flat_media_list_view_item_at_index)
**************************************************************************/
static libvlc_media_list_view_t *
hierarch_node_media_list_view_children_at_index( libvlc_media_list_view_t * p_mlv,
int index,
libvlc_exception_t * p_e )
{
libvlc_media_descriptor_t * p_md;
libvlc_media_list_t * p_submlist;
libvlc_media_list_view_t * p_ret;
p_md = hierarch_node_media_list_view_item_at_index( p_mlv, index, p_e );
if( !p_md ) return NULL;
p_submlist = libvlc_media_descriptor_subitems( p_md, p_e );
libvlc_media_descriptor_release( p_md );
if( !p_submlist ) return NULL;
p_ret = libvlc_media_list_hierarchical_node_view( p_submlist, p_e );
libvlc_media_list_release( p_submlist );
return p_ret;
}
/* Helper */
static int
index_of_item( libvlc_media_list_view_t * p_mlv, libvlc_media_descriptor_t * p_md )
{
libvlc_media_descriptor_t * p_iter_md;
libvlc_media_list_t * p_submlist;
int i, current_index, count = libvlc_media_list_count( p_mlv->p_mlist, NULL );
current_index = -1;
for( i = 0; i < count; i++ )
{
p_iter_md = libvlc_media_list_item_at_index( p_mlv->p_mlist, i, NULL );
if( !p_iter_md ) continue;
p_submlist = libvlc_media_descriptor_subitems( p_iter_md, NULL );
if( !p_submlist ) continue;
libvlc_media_list_release( p_submlist );
libvlc_media_descriptor_release( p_iter_md );
current_index++;
if( p_md == p_iter_md )
return current_index;
}
return -1;
}
static vlc_bool_t
item_is_already_added( libvlc_media_list_view_t * p_mlv, libvlc_media_descriptor_t * p_md )
{
libvlc_media_list_t * p_submlist;
p_submlist = libvlc_media_descriptor_subitems( p_md, NULL );
if( !p_submlist ) return VLC_FALSE;
int count = libvlc_media_list_count( p_submlist, NULL );
libvlc_media_list_release( p_submlist );
return count > 1;
}
/**************************************************************************
* media_list_(item|will)_* (private) (Event callback)
**************************************************************************/
static void
items_subitems_added( const libvlc_event_t * p_event, void * user_data )
{
libvlc_media_descriptor_t * p_md;
libvlc_media_list_view_t * p_mlv = user_data;
int index;
p_md = p_event->p_obj;
if( !item_is_already_added( p_mlv, p_md ) )
{
index = index_of_item( p_mlv, p_md );
trace("%d\n", index);
if( index >= 0 )
{
libvlc_media_list_view_will_add_item( p_mlv, p_md, index );
libvlc_media_list_view_item_added( p_mlv, p_md, index );
}
}
else
trace("item already added\n");
}
static void
media_list_item_added( const libvlc_event_t * p_event, void * user_data )
{
libvlc_media_descriptor_t * p_md;
libvlc_media_list_view_t * p_mlv = user_data;
int index;
p_md = p_event->u.media_list_item_added.item;
index = index_of_item( p_mlv, p_md );
trace("%d\n", index);
if( index >= 0)
libvlc_media_list_view_item_added( p_mlv, p_md, index );
libvlc_event_attach( p_md->p_event_manager, libvlc_MediaDescriptorSubItemAdded,
items_subitems_added, p_mlv, NULL );
}
static void
media_list_will_add_item( const libvlc_event_t * p_event, void * user_data )
{
libvlc_media_descriptor_t * p_md;
libvlc_media_list_view_t * p_mlv = user_data;
int index;
p_md = p_event->u.media_list_will_add_item.item;
index = index_of_item( p_mlv, p_md );
trace("%d\n", index);
if( index >= 0)
libvlc_media_list_view_will_add_item( p_mlv, p_md, index );
}
static void
media_list_item_deleted( const libvlc_event_t * p_event, void * user_data )
{
libvlc_media_descriptor_t * p_md;
libvlc_media_list_view_t * p_mlv = user_data;
int index;
p_md = p_event->u.media_list_item_deleted.item;
index = index_of_item( p_mlv, p_md );
trace("%d\n", index);
if( index >= 0)
libvlc_media_list_view_item_deleted( p_mlv, p_md, index );
libvlc_event_detach( p_md->p_event_manager, libvlc_MediaDescriptorSubItemAdded,
items_subitems_added, p_mlv, NULL );
}
static void
media_list_will_delete_item( const libvlc_event_t * p_event, void * user_data )
{
libvlc_media_descriptor_t * p_md;
libvlc_media_list_view_t * p_mlv = user_data;
int index;
p_md = p_event->u.media_list_will_delete_item.item;
index = index_of_item( p_mlv, p_md );
trace("%d\n", index);
if( index >= 0)
libvlc_media_list_view_will_delete_item( p_mlv, p_md, index );
}
/*
* Public libvlc functions
*/
/**************************************************************************
* flat_media_list_view_release (private)
* (called by media_list_view_release)
**************************************************************************/
static void
hierarch_node_media_list_view_release( libvlc_media_list_view_t * p_mlv )
{
trace("\n");
libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
libvlc_MediaListItemAdded,
media_list_item_added, p_mlv, NULL );
libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
libvlc_MediaListWillAddItem,
media_list_will_add_item, p_mlv, NULL );
libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
libvlc_MediaListItemDeleted,
media_list_item_deleted, p_mlv, NULL );
libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
libvlc_MediaListWillDeleteItem,
media_list_will_delete_item, p_mlv, NULL );
}
/**************************************************************************
* libvlc_media_list_flat_view (Public)
**************************************************************************/
libvlc_media_list_view_t *
libvlc_media_list_hierarchical_node_view( libvlc_media_list_t * p_mlist,
libvlc_exception_t * p_e )
{
trace("\n");
libvlc_media_list_view_t * p_mlv;
p_mlv = libvlc_media_list_view_new( p_mlist,
hierarch_node_media_list_view_count,
hierarch_node_media_list_view_item_at_index,
hierarch_node_media_list_view_children_at_index,
hierarch_node_media_list_view_release,
NULL,
p_e );
libvlc_media_list_lock( p_mlist );
libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
libvlc_MediaListItemAdded,
media_list_item_added, p_mlv, NULL );
libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
libvlc_MediaListWillAddItem,
media_list_will_add_item, p_mlv, NULL );
libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
libvlc_MediaListItemDeleted,
media_list_item_deleted, p_mlv, NULL );
libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
libvlc_MediaListWillDeleteItem,
media_list_will_delete_item, p_mlv, NULL );
libvlc_media_list_unlock( p_mlist );
return p_mlv;
}
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