/**
* Insert an entry at a given position in the playlist without
* validating it.
*
* @internal
*/
void
xmms_playlist_insert_entry (xmms_playlist_t *playlist, const gchar *plname,
guint32 pos, xmms_medialib_entry_t file,
xmms_error_t *err)
{
xmms_medialib_session_t *session;
xmmsv_t *dict;
gint currpos;
gint len;
xmmsv_coll_t *plcoll;
gboolean valid;
g_mutex_lock (playlist->mutex);
do {
session = xmms_medialib_session_begin_ro (playlist->medialib);
valid = xmms_medialib_check_id (session, file);
} while (!xmms_medialib_session_commit (session));
if (!valid) {
g_mutex_unlock (playlist->mutex);
xmms_error_set (err, XMMS_ERROR_NOENT,
"That is not a valid medialib id!");
return;
}
plcoll = xmms_playlist_get_coll (playlist, plname, err);
if (plcoll == NULL) {
/* FIXME: happens ? */
g_mutex_unlock (playlist->mutex);
return;
}
len = xmms_playlist_coll_get_size (plcoll);
if (pos > len) {
xmms_error_set (err, XMMS_ERROR_GENERIC,
"Could not insert entry outside of playlist!");
g_mutex_unlock (playlist->mutex);
return;
}
xmmsv_coll_idlist_insert (plcoll, pos, file);
/** propagate the MID ! */
dict = xmms_playlist_changed_msg_new (playlist, XMMS_PLAYLIST_CHANGED_INSERT, file, plname);
xmmsv_dict_set_int (dict, "position", pos);
xmms_playlist_changed_msg_send (playlist, dict);
/** update position once client is familiar with the new item. */
currpos = xmms_playlist_coll_get_currpos (plcoll);
if (pos <= currpos) {
currpos++;
xmms_collection_set_int_attr (plcoll, "position", currpos);
XMMS_PLAYLIST_CURRPOS_MSG (currpos, plname);
}
g_mutex_unlock (playlist->mutex);
}
static gboolean
xmms_playlist_advance_do (xmms_playlist_t *playlist)
{
gint size, currpos;
gboolean ret = TRUE;
xmmsv_coll_t *plcoll;
const gchar *jumplist;
xmms_error_t err;
xmms_playlist_t *buffer = playlist;
guint newpos;
xmms_error_reset (&err);
plcoll = xmms_playlist_get_coll (playlist, XMMS_ACTIVE_PLAYLIST, NULL);
if (plcoll == NULL) {
ret = FALSE;
} else if ((size = xmms_playlist_coll_get_size (plcoll)) == 0) {
if (xmmsv_coll_attribute_get (plcoll, "jumplist", &jumplist)) {
xmms_playlist_client_load (buffer, jumplist, &err);
if (xmms_error_isok (&err)) {
ret = xmms_playlist_advance_do (playlist);
} else {
ret = FALSE;
}
} else {
ret = FALSE;
}
} else if (!playlist->repeat_one) {
currpos = xmms_playlist_coll_get_currpos (plcoll);
currpos++;
if (currpos == size && !playlist->repeat_all &&
xmmsv_coll_attribute_get (plcoll, "jumplist", &jumplist)) {
xmms_collection_set_int_attr (plcoll, "position", -1);
XMMS_PLAYLIST_CURRPOS_MSG (-1, XMMS_ACTIVE_PLAYLIST);
xmms_playlist_client_load (buffer, jumplist, &err);
if (xmms_error_isok (&err)) {
ret = xmms_playlist_advance_do (playlist);
} else {
ret = FALSE;
}
} else {
newpos = currpos%size;
xmms_collection_set_int_attr (plcoll, "position", newpos);
XMMS_PLAYLIST_CURRPOS_MSG (newpos, XMMS_ACTIVE_PLAYLIST);
ret = (currpos != size) || playlist->repeat_all;
}
}
return ret;
}
static gint
xmms_playlist_set_current_position_do (xmms_playlist_t *playlist, guint32 pos,
xmms_error_t *err)
{
gint size;
xmms_medialib_entry_t mid;
xmmsv_coll_t *plcoll;
const gchar *jumplist;
g_return_val_if_fail (playlist, FALSE);
plcoll = xmms_playlist_get_coll (playlist, XMMS_ACTIVE_PLAYLIST, err);
if (plcoll == NULL) {
return 0;
}
size = xmms_playlist_coll_get_size (plcoll);
if (pos == size &&
xmmsv_coll_attribute_get (plcoll, "jumplist", &jumplist)) {
xmms_collection_set_int_attr (plcoll, "position", 0);
XMMS_PLAYLIST_CURRPOS_MSG (0, XMMS_ACTIVE_PLAYLIST);
xmms_playlist_client_load (playlist, jumplist, err);
if (xmms_error_iserror (err)) {
return 0;
}
plcoll = xmms_playlist_get_coll (playlist, XMMS_ACTIVE_PLAYLIST, err);
if (plcoll == NULL) {
return 0;
}
} else if (pos < size) {
XMMS_DBG ("newpos! %d", pos);
xmms_collection_set_int_attr (plcoll, "position", pos);
XMMS_PLAYLIST_CURRPOS_MSG (pos, XMMS_ACTIVE_PLAYLIST);
} else {
xmms_error_set (err, XMMS_ERROR_INVAL,
"Can't set pos outside the current playlist!");
return 0;
}
xmmsv_coll_idlist_get_index (plcoll, pos, &mid);
return mid;
}
/**
* Shuffle the playlist.
*
*/
static void
xmms_playlist_client_shuffle (xmms_playlist_t *playlist, const gchar *plname,
xmms_error_t *err)
{
guint j,i;
gint len, currpos;
xmmsv_coll_t *plcoll;
g_return_if_fail (playlist);
g_mutex_lock (playlist->mutex);
plcoll = xmms_playlist_get_coll (playlist, plname, err);
if (plcoll == NULL) {
xmms_error_set (err, XMMS_ERROR_NOENT, "no such playlist");
g_mutex_unlock (playlist->mutex);
return;
}
currpos = xmms_playlist_coll_get_currpos (plcoll);
len = xmms_playlist_coll_get_size (plcoll);
if (len > 1) {
/* put current at top and exclude from shuffling */
if (currpos != -1) {
swap_entries (plcoll, 0, currpos);
currpos = 0;
xmms_collection_set_int_attr (plcoll, "position", currpos);
}
/* knuth <3 */
for (i = currpos + 1; i < len; i++) {
j = g_random_int_range (i, len);
if (i != j) {
swap_entries (plcoll, i, j);
}
}
}
XMMS_PLAYLIST_CHANGED_MSG (XMMS_PLAYLIST_CHANGED_SHUFFLE, 0, plname);
XMMS_PLAYLIST_CURRPOS_MSG (currpos, plname);
g_mutex_unlock (playlist->mutex);
}
/**
* Add an entry to the playlist without locking the mutex.
*/
void
xmms_playlist_add_entry_unlocked (xmms_playlist_t *playlist,
const gchar *plname,
xmmsv_coll_t *plcoll,
xmms_medialib_entry_t file,
xmms_error_t *err)
{
gint prev_size;
xmmsv_t *dict;
prev_size = xmms_playlist_coll_get_size (plcoll);
xmmsv_coll_idlist_append (plcoll, file);
/** propagate the MID ! */
dict = xmms_playlist_changed_msg_new (playlist, XMMS_PLAYLIST_CHANGED_ADD, file, plname);
xmmsv_dict_set_int (dict, "position", prev_size);
xmms_playlist_changed_msg_send (playlist, dict);
}
static void
xmms_playlist_update_partyshuffle (xmms_playlist_t *playlist,
const gchar *plname, xmmsv_coll_t *coll)
{
gint history, upcoming, currpos, size;
xmmsv_coll_t *src;
xmmsv_t *tmp;
XMMS_DBG ("PLAYLIST: Update partyshuffle.");
if (!xmms_collection_get_int_attr (coll, "history", &history)) {
history = 0;
}
if (!xmms_collection_get_int_attr (coll, "upcoming", &upcoming)) {
upcoming = XMMS_DEFAULT_PARTYSHUFFLE_UPCOMING;
}
currpos = xmms_playlist_coll_get_currpos (coll);
while (currpos > history) {
/* Removing entries is fast enough to be processed at once. */
xmms_playlist_remove_unlocked (playlist, plname, coll, 0, NULL);
currpos = xmms_playlist_coll_get_currpos (coll);
}
g_return_if_fail(xmmsv_list_get (xmmsv_coll_operands_get (coll), 0, &tmp));
g_return_if_fail(xmmsv_get_coll (tmp, &src));
/* Since getting random media can be slow on huge medialibs, we refill only
* one entry at a time. This let other threads a chance to get the lock on
* the playlist object as soon as possible. */
size = xmms_playlist_coll_get_size (coll);
if (size < currpos + 1 + upcoming) {
xmms_medialib_entry_t randentry;
randentry = xmms_collection_get_random_media (playlist->colldag, src);
if (randentry > 0) {
xmms_playlist_add_entry_unlocked (playlist, plname, coll, randentry, NULL);
}
}
}
/**
* Retrieve the currently active xmms_medialib_entry_t.
*
*/
xmms_medialib_entry_t
xmms_playlist_current_entry (xmms_playlist_t *playlist)
{
gint size, currpos;
xmmsv_coll_t *plcoll;
xmms_medialib_entry_t ent = 0;
g_return_val_if_fail (playlist, 0);
g_mutex_lock (playlist->mutex);
plcoll = xmms_playlist_get_coll (playlist, XMMS_ACTIVE_PLAYLIST, NULL);
if (plcoll == NULL) {
/* FIXME: What happens? */
g_mutex_unlock (playlist->mutex);
return 0;
}
currpos = xmms_playlist_coll_get_currpos (plcoll);
size = xmms_playlist_coll_get_size (plcoll);
if (currpos == -1 && (size > 0)) {
currpos = 0;
xmms_collection_set_int_attr (plcoll, "position", currpos);
XMMS_PLAYLIST_CURRPOS_MSG (0, XMMS_ACTIVE_PLAYLIST);
}
if (currpos < size) {
xmmsv_coll_idlist_get_index (plcoll, currpos, &ent);
} else {
ent = 0;
}
g_mutex_unlock (playlist->mutex);
return ent;
}
/**
* Move an entry in playlist
*
*/
static void
xmms_playlist_client_move_entry (xmms_playlist_t *playlist,
const gchar *plname, gint32 pos,
gint32 newpos, xmms_error_t *err)
{
xmmsv_t *dict;
xmms_medialib_entry_t id;
gint currpos, size;
gint64 ipos, inewpos;
xmmsv_coll_t *plcoll;
g_return_if_fail (playlist);
XMMS_DBG ("Moving %d, to %d", pos, newpos);
g_mutex_lock (playlist->mutex);
plcoll = xmms_playlist_get_coll (playlist, plname, err);
if (plcoll == NULL) {
/* FIXME: happens ? */
g_mutex_unlock (playlist->mutex);
return;
}
currpos = xmms_playlist_coll_get_currpos (plcoll);
size = xmms_playlist_coll_get_size (plcoll);
if (size == 0 || newpos > (size - 1)) {
xmms_error_set (err, XMMS_ERROR_NOENT,
"Cannot move entry outside playlist");
g_mutex_unlock (playlist->mutex);
return;
}
if (!xmmsv_coll_idlist_move (plcoll, pos, newpos)) {
xmms_error_set (err, XMMS_ERROR_NOENT, "Entry was not in list!");
g_mutex_unlock (playlist->mutex);
return;
}
/* Update the current position pointer */
ipos = pos;
inewpos = newpos;
if (inewpos <= currpos && ipos > currpos)
currpos++;
else if (inewpos >= currpos && ipos < currpos)
currpos--;
else if (ipos == currpos)
currpos = inewpos;
xmms_collection_set_int_attr (plcoll, "position", currpos);
xmmsv_coll_idlist_get_index (plcoll, newpos, &id);
dict = xmms_playlist_changed_msg_new (playlist, XMMS_PLAYLIST_CHANGED_MOVE, id, plname);
xmmsv_dict_set_int (dict, "position", pos);
xmmsv_dict_set_int (dict, "newposition", newpos);
xmms_playlist_changed_msg_send (playlist, dict);
XMMS_PLAYLIST_CURRPOS_MSG (currpos, plname);
g_mutex_unlock (playlist->mutex);
return;
}
