internal TrackWrapper(Track track)
{
this.track = track;
}
protected override void OnDispose()
{
Track.Delete(track.trackPtr);
track = null;
}
protected Playlist(Session session, IntPtr playlistPtr, bool registerCallbacks = true)
{
if (playlistPtr == IntPtr.Zero)
{
throw new ArgumentException("playlistPtr can't be zero.");
}
if (session == null)
{
throw new ArgumentNullException("Session can't be null.");
}
this.session = session;
this.playlistPtr = playlistPtr;
this.registerCallbacks = registerCallbacks;
if (registerCallbacks)
{
tracks_added = new tracks_added_cb(TracksAddedCallback);
tracks_removed = new tracks_removed_cb(TracksRemovedCallback);
tracks_moved = new tracks_moved_cd(TracksMovedCallback);
playlist_renamed = new playlist_renamed_cb(RenamedCallback);
playlist_state_changed = new playlist_state_changed_cb(StateChangedCallback);
playlist_update_in_progress = new playlist_update_in_progress_cb(UpdateInProgressCallback);
playlist_metadata_updated = new playlist_metadata_updated_cb(MetadataUpdatedCallback);
track_created_changed = new track_created_changed_cb(TrackCreatedChangedCallback);
track_seen_changed = new track_seen_changed_cb(TrackSeenChangedCallback);
description_changed = new description_changed_cb(DescriptionChangedCallback);
image_changed = new image_changed_cb(ImageChangedCallback);
sp_playlist_callbacks callbacks = new sp_playlist_callbacks
{
tracks_added = Marshal.GetFunctionPointerForDelegate(tracks_added),
tracks_removed = Marshal.GetFunctionPointerForDelegate(tracks_removed),
tracks_moved = Marshal.GetFunctionPointerForDelegate(tracks_moved),
playlist_renamed = Marshal.GetFunctionPointerForDelegate(playlist_renamed),
playlist_state_changed = Marshal.GetFunctionPointerForDelegate(playlist_state_changed),
playlist_update_in_progress = Marshal.GetFunctionPointerForDelegate(playlist_update_in_progress),
playlist_metadata_updated = Marshal.GetFunctionPointerForDelegate(playlist_metadata_updated),
track_created_changed = Marshal.GetFunctionPointerForDelegate(track_created_changed),
track_seen_changed = Marshal.GetFunctionPointerForDelegate(track_seen_changed),
description_changed = Marshal.GetFunctionPointerForDelegate(description_changed),
image_changed = Marshal.GetFunctionPointerForDelegate(image_changed)
};
callbacksPtr = Marshal.AllocHGlobal(Marshal.SizeOf(callbacks));
Marshal.StructureToPtr(callbacks, callbacksPtr, true);
}
lock (libspotify.Mutex)
{
libspotify.sp_playlist_add_ref(playlistPtr);
if (registerCallbacks)
{
libspotify.sp_playlist_add_callbacks(playlistPtr, callbacksPtr, IntPtr.Zero);
}
}
session.DisposeAll += new SessionEventHandler(session_DisposeAll);
tracks = new PlaylistTrackList(
() =>
{
IsAlive(true);
lock (libspotify.Mutex)
return(libspotify.sp_playlist_num_tracks(playlistPtr));
},
(index) =>
{
IsAlive(true);
lock (libspotify.Mutex)
return(PlaylistTrack.Get(session, this, libspotify.sp_playlist_track(playlistPtr, index), index));
},
(track, index) =>
{
IsAlive(true);
IntPtr trackArrayPtr = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(IntPtr)));
IntPtr[] ptrArray = new[] { Track.GetPointer(track) };
try
{
Marshal.Copy(ptrArray, 0, trackArrayPtr, 1);
lock (libspotify.Mutex)
libspotify.sp_playlist_add_tracks(playlistPtr, trackArrayPtr, 1, index, session.sessionPtr);
}
finally
{
try { Marshal.FreeHGlobal(trackArrayPtr); }
catch
{}
}
},
(index) =>
{
IsAlive(true);
lock (libspotify.Mutex)
libspotify.sp_playlist_remove_tracks(playlistPtr, new int[] { index }, 1);
},
() => false
);
PlaylistTrack.RegisterPlaylist(this);
}
