/*
* Get count on media list items
* The {#lock} should be held upon entering this function.
*
* @return [Integer] number of items in media list
* @todo fixme
*/
static VALUE
rg_count(VALUE self)
{
return INT2NUM(libvlc_media_list_count(_SELF(self)));
}
/**************************************************************************
* 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))
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);
/* 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;
}
static void test_media_list (const char ** argv, int argc)
{
libvlc_instance_t *vlc;
libvlc_media_t *md1, *md2, *md3, *md4;
libvlc_media_list_t *ml;
int ret;
log ("Testing media_list\n");
vlc = libvlc_new (argc, argv);
assert (vlc != NULL);
ml = libvlc_media_list_new (vlc);
assert (ml != NULL);
md1 = libvlc_media_new_path (vlc, "/dev/null");
assert (md1 != NULL);
md2 = libvlc_media_new_path (vlc, "/dev/null");
assert (md2 != NULL);
md3 = libvlc_media_new_path (vlc, "/dev/null");
assert (md3 != NULL);
ret = libvlc_media_list_add_media (ml, md1);
assert (!ret);
ret = libvlc_media_list_add_media (ml, md2);
assert (!ret);
assert( libvlc_media_list_count (ml) == 2 );
assert( libvlc_media_list_index_of_item (ml, md1) == 0 );
assert( libvlc_media_list_index_of_item (ml, md2) == 1 );
ret = libvlc_media_list_remove_index (ml, 0); /* removing first item */
assert (!ret);
/* test if second item was moved on first place */
assert( libvlc_media_list_index_of_item (ml, md2) == 0 );
ret = libvlc_media_list_add_media (ml, md1); /* add 2 items */
assert (!ret);
ret = libvlc_media_list_add_media (ml, md1);
assert (!ret);
/* there should be 3 pieces */
assert( libvlc_media_list_count (ml) == 3 );
ret = libvlc_media_list_insert_media (ml, md3, 2);
assert (!ret);
/* there should be 4 pieces */
assert( libvlc_media_list_count (ml) == 4 );
/* test inserting on right place */
assert( libvlc_media_list_index_of_item (ml, md3) == 2 );
/* test right returning descriptor*/
assert ( libvlc_media_list_item_at_index (ml, 0) == md2 );
assert ( libvlc_media_list_item_at_index (ml, 2) == md3 );
/* test if give errors, when it should */
/* have 4 items, so index 4 should give error */
ret = libvlc_media_list_remove_index (ml, 4);
assert (ret == -1);
ret = libvlc_media_list_remove_index (ml, 100);
assert (ret == -1);
ret = libvlc_media_list_remove_index (ml, -1);
assert (ret == -1);
/* getting non valid items */
libvlc_media_t * p_non_exist =
libvlc_media_list_item_at_index (ml, 4);
assert (p_non_exist == NULL);
p_non_exist = libvlc_media_list_item_at_index (ml, 100);
assert (p_non_exist == NULL);
p_non_exist = libvlc_media_list_item_at_index (ml, -1);
assert (p_non_exist == NULL);
md4 = libvlc_media_new_path (vlc, "/dev/null");
assert (md4 != NULL);
/* try to find non inserted item */
int i_non_exist = 0;
i_non_exist = libvlc_media_list_index_of_item (ml, md4);
assert ( i_non_exist == -1 );
libvlc_media_release (md1);
libvlc_media_release (md2);
libvlc_media_release (md3);
libvlc_media_release (md4);
libvlc_media_list_release (ml);
libvlc_release (vlc);
}
/**************************************************************************
* 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))
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))
{
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;
}
