/*
* Moves the item at from_pos to to_pos in the play-queue (shuffle = 0) or shuffle-queue (shuffle = 1)
*
* The position arguments are relativ to the item with the given id. At position = 1 is the first item
* after the item with the given id (either in the play-queue or shuffle-queue, depending on the shuffle
* argument).
*
* @param queue The queue to move items
* @param from_pos The position of the first item to be moved
* @param to_pos The position to move the items
* @param shuffle If 0 the position in the play-queue, 1 the position in the shuffle-queue
*/
void
queue_move_bypos(struct queue *queue, unsigned int item_id, unsigned int from_pos, unsigned int to_offset, char shuffle)
{
struct queue_item *item;
struct queue_item *item_next;
// Get the item to be moved
item = queueitem_get_bypos(queue, item_id, from_pos, shuffle);
if (!item)
{
DPRINTF(E_LOG, L_PLAYER, "Invalid position given to move items\n");
return;
}
// Get the item at the target position
item_next = queueitem_get_bypos(queue, item_id, to_offset, shuffle);
if (!item_next)
{
DPRINTF(E_LOG, L_PLAYER, "Invalid position given to move items\n");
return;
}
// Remove item from the queue
if (shuffle)
{
item->shuffle_prev->shuffle_next = item->shuffle_next;
item->shuffle_next->shuffle_prev = item->shuffle_prev;
}
else
{
item->prev->next = item->next;
item->next->prev = item->prev;
}
// Insert item into the queue befor the item at the target postion
if (shuffle)
{
item_next->shuffle_prev->shuffle_next = item;
item->shuffle_prev = item_next->shuffle_prev;
item_next->shuffle_prev = item;
item->shuffle_next = item_next;
}
else
{
item_next->next->prev = item;
item->next = item_next->next;
item_next->next = item;
item->prev = item_next;
}
}
/*
* Moves the item at from_pos to to_pos in the play-queue (shuffle = 0) or shuffle-queue (shuffle = 1)
*
* The position arguments are relativ to the item with the given id. At position = 1 is the first item
* after the item with the given id (either in the play-queue or shuffle-queue, depending on the shuffle
* argument).
*
* @param queue The queue to move items
* @param from_pos The position of the first item to be moved
* @param to_pos The position to move the items
* @param shuffle If 0 the position in the play-queue, 1 the position in the shuffle-queue
*/
void
queue_move_bypos(struct queue *queue, unsigned int item_id, unsigned int from_pos, unsigned int to_offset, char shuffle)
{
struct queue_item *item;
struct queue_item *item_next;
// Get the item to be moved
item = queueitem_get_bypos(queue, item_id, from_pos, shuffle);
if (!item)
{
DPRINTF(E_LOG, L_PLAYER, "Invalid position given to move items\n");
return;
}
// Get the item at the target position
item_next = queueitem_get_bypos(queue, item_id, (to_offset + 1), shuffle);
queue_move_item_before_item(queue, item, item_next, shuffle);
}
/*
* Returns the item at the given position relative to the item with the given item_id in the
* play queue (shuffle = 0) or shuffle queue (shuffle = 1).
*
* The item with item_id is at pos == 0.
*
* @param queue The queue
* @param item_id The unique id of the item in the queue
* @param pos The position relative to the item with given queue-item-id
* @param shuffle If 0 the position in the play-queue, 1 the position in the shuffle-queue
* @return Item at position in the queue or NULL if not found
*/
struct queue_item *
queue_get_bypos(struct queue *queue, unsigned int item_id, unsigned int pos, char shuffle)
{
struct queue_item *item;
item = queueitem_get_bypos(queue, item_id, pos, shuffle);
if (!item)
return NULL;
return item;
}
/*
* Removes the item at pos from the play-queue (shuffle = 0) or shuffle-queue (shuffle = 1)
*
* The position argument is relativ to the item with the given id. At position = 1 is the first item
* after the item with the given id (either in the play-queue or shuffle-queue, depending on the shuffle
* argument).
*
* @param queue The queue to add the new items
* @param item_id The unique id of the item in the queue
* @param pos The position of the first item to be removed
* @param shuffle If 0 the position in the play-queue, 1 the position in the shuffle-queue
*/
void
queue_remove_bypos(struct queue *queue, unsigned int item_id, unsigned int pos, char shuffle)
{
struct queue_item *item;
// Get the item after which the items will be removed from the queue
item = queueitem_get_bypos(queue, item_id, pos, shuffle);
if (!item)
{
DPRINTF(E_LOG, L_PLAYER, "Invalid position given to remove items\n");
return;
}
queue_remove_item(item);
}
