/**************************************************************************
* Play item at index (Public)
**************************************************************************/
int libvlc_media_list_player_play_item_at_index(libvlc_media_list_player_t * p_mlp, int i_index)
{
lock(p_mlp);
set_current_playing_item(p_mlp, libvlc_media_list_path_with_root_index(i_index));
libvlc_media_player_play(p_mlp->p_mi);
unlock(p_mlp);
/* Send the next item event */
libvlc_event_t event;
event.type = libvlc_MediaListPlayerNextItemSet;
libvlc_event_send(p_mlp->p_event_manager, &event);
return 0;
}
/**************************************************************************
* Play item at index (Public)
**************************************************************************/
void libvlc_media_list_player_play_item_at_index(libvlc_media_list_player_t * p_mlp, int i_index, libvlc_exception_t * p_e)
{
VLC_UNUSED(p_e);
lock(p_mlp);
set_current_playing_item(p_mlp, libvlc_media_list_path_with_root_index(i_index));
libvlc_media_player_play(p_mlp->p_mi, p_e);
unlock(p_mlp);
/* Send the next item event */
libvlc_event_t event;
event.type = libvlc_MediaListPlayerNextItemSet;
libvlc_event_send(p_mlp->p_event_manager, &event);
}
/**************************************************************************
* Play item at index (Public)
**************************************************************************/
int libvlc_media_list_player_play_item_at_index(libvlc_media_list_player_t * p_mlp, int i_index)
{
lock(p_mlp);
libvlc_media_list_path_t path = libvlc_media_list_path_with_root_index(i_index);
set_current_playing_item(p_mlp, path);
libvlc_media_t *p_md = libvlc_media_player_get_media(p_mlp->p_mi);
libvlc_media_player_play(p_mlp->p_mi);
unlock(p_mlp);
if (!p_md)
return -1;
/* Send the next item event */
libvlc_event_t event;
event.type = libvlc_MediaListPlayerNextItemSet;
event.u.media_list_player_next_item_set.item = p_md;
libvlc_event_send(&p_mlp->event_manager, &event);
libvlc_media_release(p_md);
return 0;
}
/**************************************************************************
* get_previous_path (private)
*
* Returns the path to the preceding item in the list.
* If looping is specified and the current item is the first list item in
* the list it will return the last descendant of the last item in the list.
**************************************************************************/
static libvlc_media_list_path_t
get_previous_path(libvlc_media_list_player_t * p_mlp, bool b_loop)
{
assert_locked(p_mlp);
/* We are entered with libvlc_media_list_lock(p_mlp->p_list) */
libvlc_media_list_path_t ret;
libvlc_media_list_t * p_parent_of_playing_item;
if (!p_mlp->current_playing_item_path)
{
if (!libvlc_media_list_count(p_mlp->p_mlist, NULL))
return NULL;
return libvlc_media_list_path_with_root_index(0);
}
/* Try to catch parent element */
p_parent_of_playing_item = libvlc_media_list_parentlist_at_path(
p_mlp->p_mlist,
p_mlp->current_playing_item_path);
int depth = libvlc_media_list_path_depth(p_mlp->current_playing_item_path);
if (depth < 1 || !p_parent_of_playing_item)
return NULL;
/* Set the return path to the current path */
ret = libvlc_media_list_path_copy(p_mlp->current_playing_item_path);
/* Change the return path to the previous list entry */
ret[depth - 1]--; /* set to previous element */
ret[depth] = -1;
/* Is the return path is beyond the start of the current list? */
if(ret[depth - 1] < 0)
{
/* Move to parent of current item */
depth--;
/* Are we at the root level of the tree? */
if (depth <= 0)
{
// Is looping enabled?
if(b_loop)
{
int i_count = libvlc_media_list_count(p_parent_of_playing_item, NULL);
/* Set current play item to the last element in the list */
ret[0] = i_count - 1;
ret[1] = -1;
/* Set the return path to the last descendant item of the current item */
ret = find_last_item(p_mlp->p_mlist, ret);
}
else
{
/* No looping so return empty path. */
free(ret);
ret = NULL;
}
}
else
{
/* This is the case of moving backward from the beginning of the
* subitem list to its parent item.
* This ensures that current path is properly terminated to
* use that parent.
*/
ret[depth] = -1;
}
}
else
{
ret = find_last_item(p_mlp->p_mlist, ret);
}
libvlc_media_list_release(p_parent_of_playing_item);
return ret;
}
/**************************************************************************
* get_next_path (private)
*
* Returns the path to the next item in the list.
* If looping is specified and the current item is the last list item in
* the list it will return the first item in the list.
**************************************************************************/
static libvlc_media_list_path_t
get_next_path(libvlc_media_list_player_t * p_mlp, bool b_loop)
{
assert_locked(p_mlp);
/* We are entered with libvlc_media_list_lock(p_mlp->p_list) */
libvlc_media_list_path_t ret;
libvlc_media_list_t * p_parent_of_playing_item;
libvlc_media_list_t * p_sublist_of_playing_item;
if (!p_mlp->current_playing_item_path)
{
if (!libvlc_media_list_count(p_mlp->p_mlist, NULL))
return NULL;
return libvlc_media_list_path_with_root_index(0);
}
p_sublist_of_playing_item = libvlc_media_list_sublist_at_path(
p_mlp->p_mlist,
p_mlp->current_playing_item_path);
/* If item just gained a sublist just play it */
if (p_sublist_of_playing_item)
{
libvlc_media_list_release(p_sublist_of_playing_item);
return libvlc_media_list_path_copy_by_appending(p_mlp->current_playing_item_path, 0);
}
/* Try to catch parent element */
p_parent_of_playing_item = libvlc_media_list_parentlist_at_path(p_mlp->p_mlist,
p_mlp->current_playing_item_path);
int depth = libvlc_media_list_path_depth(p_mlp->current_playing_item_path);
if (depth < 1 || !p_parent_of_playing_item)
return NULL;
ret = libvlc_media_list_path_copy(p_mlp->current_playing_item_path);
ret[depth - 1]++; /* set to next element */
/* If this goes beyond the end of the list */
while(ret[depth-1] >= libvlc_media_list_count(p_parent_of_playing_item, NULL))
{
depth--;
if (depth <= 0)
{
if(b_loop)
{
ret[0] = 0;
ret[1] = -1;
break;
}
else
{
free(ret);
libvlc_media_list_release(p_parent_of_playing_item);
return NULL;
}
}
ret[depth] = -1;
ret[depth-1]++;
p_parent_of_playing_item = libvlc_media_list_parentlist_at_path(
p_mlp->p_mlist,
ret);
}
libvlc_media_list_release(p_parent_of_playing_item);
return ret;
}
