public MediaItem MoveAndGetNext()
{
lock (_syncObj)
{
if (_repeatMode == RepeatMode.One)
{
return(Current);
}
// Skip forward for multi-resource media items
if (HasNextResourceIndex)
{
Current.ActiveResourceLocatorIndex++;
return(Current);
}
if (_currentPlayIndex < _itemList.Count)
{
_currentPlayIndex++;
}
if (AllPlayed && _repeatMode == RepeatMode.All)
{
_currentPlayIndex = 0;
}
PlaylistMessaging.SendPlaylistMessage(PlaylistMessaging.MessageType.CurrentItemChange, _playerContext);
return(Current);
}
}
public MediaItem MoveAndGetPrevious()
{
lock (_syncObj)
{
if (_repeatMode == RepeatMode.One)
{
return(Current);
}
// Skip back for multi-resource media items
if (HasPreviousResourceIndex)
{
Current.ActiveResourceLocatorIndex--;
return(Current);
}
int oldPlayIndex = _currentPlayIndex;
if (_currentPlayIndex > -1)
{
_currentPlayIndex--;
}
if (_currentPlayIndex == -1 && _repeatMode == RepeatMode.All)
{
_currentPlayIndex = _itemList.Count - 1;
}
if (_currentPlayIndex != oldPlayIndex)
{
PlaylistMessaging.SendPlaylistMessage(PlaylistMessaging.MessageType.CurrentItemChange, _playerContext);
}
return(Current);
}
}
protected void SetCurrentPlayIndexByItemIndex(int currentItemIndex)
{
lock (_syncObj)
if (currentItemIndex == -1)
{
_currentPlayIndex = -1;
}
else
{ // Find current played item in shuffled index list
if (_playIndexList == null)
{
_playIndexList = BuildPlayIndexList();
}
foreach (int i in _playIndexList)
{
if (_playIndexList[i] == currentItemIndex)
{
_currentPlayIndex = i;
break;
}
}
}
if (!InBatchUpdateMode)
{
PlaylistMessaging.SendPlaylistMessage(PlaylistMessaging.MessageType.CurrentItemChange, _playerContext);
}
}
public void ResetStatus()
{
lock (_syncObj)
{
_currentPlayIndex = -1;
_playIndexList = null;
PlaylistMessaging.SendPlaylistMessage(PlaylistMessaging.MessageType.PropertiesChange, _playerContext);
PlaylistMessaging.SendPlaylistMessage(PlaylistMessaging.MessageType.CurrentItemChange, _playerContext);
}
}
public void RemoveRange(int fromIndex, int toIndex)
{
lock (_syncObj)
{
if (fromIndex < 0)
{
fromIndex = 0;
}
if (toIndex > _itemList.Count)
{
toIndex = _itemList.Count;
}
if (toIndex <= fromIndex)
{
return;
}
for (int i = toIndex - 1; i >= fromIndex; i--)
{
_itemList.RemoveAt(i);
}
if (!InBatchUpdateMode)
{
PlaylistMessaging.SendPlaylistMessage(PlaylistMessaging.MessageType.PlaylistUpdate, _playerContext);
}
if (_playIndexList == null)
{
return;
}
// Adapt play index list
int removeCount = toIndex - fromIndex;
for (int i = _playIndexList.Count - 1; i >= 0; i--)
{
int playIndex = _playIndexList[i];
if (playIndex < fromIndex)
{
continue;
}
if (playIndex < toIndex)
{
_playIndexList.RemoveAt(i);
}
else
{
_playIndexList[i] -= removeCount;
}
}
// Fix current play index
if (_currentPlayIndex >= _playIndexList.Count)
{
_currentPlayIndex = 0;
}
}
}
public void Clear()
{
lock (_syncObj)
{
_itemList.Clear();
_playIndexList = null;
_currentPlayIndex = -1;
if (!InBatchUpdateMode)
{
PlaylistMessaging.SendPlaylistMessage(PlaylistMessaging.MessageType.PlaylistUpdate, _playerContext);
}
}
}
public void Swap(int index1, int index2)
{
lock (_syncObj)
{
if (index1 == index2)
{
return;
}
if (index1 < 0 || index1 >= _itemList.Count || index2 < 0 || index2 >= _itemList.Count)
{
return;
}
CollectionUtils.Swap(_itemList, index1, index2);
if (!InBatchUpdateMode)
{
PlaylistMessaging.SendPlaylistMessage(PlaylistMessaging.MessageType.PlaylistUpdate, _playerContext);
}
if (_playIndexList == null)
{
// If index list isn't yet initialized, we don't need to adapt the play index positions
return;
}
// Adapt play index list
int[] piIndices = new int[2];
int numFound = 0;
for (int i = 0; i < _playIndexList.Count; i++)
{
int tmpIndex = _playIndexList[i];
if (tmpIndex == index1 || tmpIndex == index2)
{
piIndices[numFound++] = i;
}
if (numFound == 2)
{
break;
}
}
if (numFound != 2)
{ // Playlist and index list are out-of-sync. This should never happen...
_playIndexList = BuildPlayIndexList();
_currentPlayIndex = -1;
return;
}
int tmp = _playIndexList[piIndices[0]];
_playIndexList[piIndices[0]] = _playIndexList[piIndices[1]];
_playIndexList[piIndices[1]] = tmp;
// We don't need to update the _currentPlayIndex because the change only happens on the underlaying data
}
}
public bool Insert(int index, MediaItem mediaItem)
{
lock (_syncObj)
{
if (index < 0 || index > _itemList.Count)
{
return(false);
}
_itemList.Insert(index, mediaItem);
if (!InBatchUpdateMode)
{
PlaylistMessaging.SendPlaylistMessage(PlaylistMessaging.MessageType.PlaylistUpdate, _playerContext);
}
if (_playIndexList == null)
{
return(true);
}
// Adapt play index list...
// ... patch old play indices
for (int i = 0; i < _playIndexList.Count; i++)
{
if (_playIndexList[i] >= index)
{
_playIndexList[i] += 1;
}
}
// ... and add new item
if (_playMode == PlayMode.Shuffle)
{
// Shuffle mode: insert an index entry for the new item at a random position
int insertPos = rnd.Next(_itemList.Count - 1);
_playIndexList.Insert(insertPos, index);
if (_currentPlayIndex > -1 && insertPos <= _currentPlayIndex)
{
_currentPlayIndex++;
}
}
else
{
// Continuous mode: Simply add an index entry at the end of the index list
_playIndexList.Add(index);
}
return(true);
}
}
public MediaItem MoveAndGetNext()
{
lock (_syncObj)
{
if (_repeatMode == RepeatMode.One)
{
return(Current);
}
if (_currentPlayIndex < _itemList.Count)
{
_currentPlayIndex++;
}
if (AllPlayed && _repeatMode == RepeatMode.All)
{
_currentPlayIndex = 0;
}
PlaylistMessaging.SendPlaylistMessage(PlaylistMessaging.MessageType.CurrentItemChange, _playerContext);
return(Current);
}
}
public MediaItem MoveAndGetPrevious()
{
lock (_syncObj)
{
if (_repeatMode == RepeatMode.One)
{
return(Current);
}
int oldPlayIndex = _currentPlayIndex;
if (_currentPlayIndex > -1)
{
_currentPlayIndex--;
}
if (_currentPlayIndex == -1 && _repeatMode == RepeatMode.All)
{
_currentPlayIndex = _itemList.Count - 1;
}
if (_currentPlayIndex != oldPlayIndex)
{
PlaylistMessaging.SendPlaylistMessage(PlaylistMessaging.MessageType.CurrentItemChange, _playerContext);
}
return(Current);
}
}
