From e8d38b4459d4d631bf8ff8653baba854a71ccac4 Mon Sep 17 00:00:00 2001 From: Pierre d'Herbemont Date: Sun, 30 Dec 2007 01:17:15 +0000 Subject: [PATCH] control/hierarchical_node_media_list_view.c: Implement a view that only show the node of the media list, hierarchically. --- src/Makefile.am | 1 + .../hierarchical_node_media_list_view.c | 306 ++++++++++++++++++ 2 files changed, 307 insertions(+) create mode 100644 src/control/hierarchical_node_media_list_view.c diff --git a/src/Makefile.am b/src/Makefile.am index 152f0afbd7..fa2fea2209 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -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 \ diff --git a/src/control/hierarchical_node_media_list_view.c b/src/control/hierarchical_node_media_list_view.c new file mode 100644 index 0000000000..0b7474de66 --- /dev/null +++ b/src/control/hierarchical_node_media_list_view.c @@ -0,0 +1,306 @@ +/***************************************************************************** + * hierarchical_node_media_list_view.c: libvlc hierarchical nodes media list + * view functs. + ***************************************************************************** + * Copyright (C) 2007 the VideoLAN team + * $Id$ + * + * Authors: Pierre d'Herbemont + * + * 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 +#include +#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; +} -- 2.39.2