/// <summary>
/// Processes a batch of file changes.
/// </summary>
/// <param name='notification'>
/// The notification containing the changes to process.
/// </param>
private void ProcessFileChanges(AudioLibraryUpdateNotification notification)
{
// If no rows, do nothing
if ((notification.UpdatedFiles.Count == 0) && (notification.NewFiles.Count == 0) && (notification.OnlineFiles.Count == 0) && (notification.DeletedFiles.Count == 0) && (notification.OfflineFiles.Count == 0))
{
return;
}
// Merge these changes in the database
AudioFileFactory.ApplicationInstance.MergeChanges(notification.NewFiles, notification.OnlineFiles, notification.UpdatedFiles);
// Raise the notification
Controller.NotificationNetworkServer.SendNotification(notification);
}
/// <summary>
/// Handle a device being unmounted.
/// </summary>
/// <param name='sender'>
/// The event sender.
/// </param>
/// <param name='e'>
/// The event arguments.
/// </param>
private void MountManagerOnUnmounted(object sender, MountedDeviceEventArgs e)
{
Logger.Debug("Unmounted " + e.Device.Device + " from " + e.Device.MountPath);
lock (_mountedDeviceUuids)
if (_mountedDeviceUuids.Contains(e.Device.Uuid))
{
_mountedDeviceUuids.Remove(e.Device.Uuid);
}
lock (_discoveryThreads)
{
if (_discoveryThreads.ContainsKey(e.Device))
{
// Force the thread to terminate
try
{
_discoveryThreads[e.Device].Abort();
}
catch
{
}
_discoveryThreads.Remove(e.Device);
}
}
// Get all files for this audio source and set them offline
AudioFile[] filesOnDevice = AudioFileFactory.ApplicationInstance.ReadAll().Where(audioFile => audioFile.DeviceUuid == e.Device.Uuid).ToArray();
if (filesOnDevice.Length < 1)
{
return;
}
AudioLibraryUpdateNotification notification = new AudioLibraryUpdateNotification();
foreach (AudioFile audioFile in filesOnDevice)
{
notification.OfflineFiles.Add(audioFile.AudioFileId);
}
Controller.NotificationNetworkServer.SendNotification(notification);
}
private void ProcessFileList(MountedDevice device, List <string> mp3Files, AudioFile[] allAudioFiles)
{
// Create a new notification object if required
AudioLibraryUpdateNotification notification = new AudioLibraryUpdateNotification();
// Now probe each file within this directory
try
{
foreach (string relativePath in mp3Files)
{
string file = Path.Combine(device.MountPath + relativePath);
if (!File.Exists(file))
{
Logger.Error("File no longer exists when probing mounted file " + file + " for audio information, aborting loop");
break;
}
try
{
AudioFile audioFile = new AudioFile();
using (TagLib.File tagFile = TagLib.File.Create(file))
{
if (!string.IsNullOrEmpty(tagFile.Tag.Album))
{
audioFile.Album = tagFile.Tag.Album;
}
if (!string.IsNullOrEmpty(tagFile.Tag.JoinedAlbumArtists))
{
audioFile.Artist = tagFile.Tag.JoinedAlbumArtists;
}
if (tagFile.Properties.Duration != TimeSpan.Zero)
{
audioFile.Duration = tagFile.Properties.Duration;
}
if (!string.IsNullOrEmpty(tagFile.Tag.Title))
{
audioFile.Title = tagFile.Tag.Title;
}
if (tagFile.Tag.Track != 0)
{
audioFile.TrackNumber = (int)tagFile.Tag.Track;
}
}
if (string.IsNullOrEmpty(audioFile.Artist))
{
string[] parts = relativePath.Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
int depth = parts.Length - 1;
string partToParse = parts[depth < 2 ? 0 : depth - 2];
if (partToParse.Contains("-"))
{
partToParse = partToParse.Split(new char[] { '-' })[0].Trim();
}
audioFile.Artist = partToParse;
if (audioFile.Artist == string.Empty)
{
audioFile.Artist = null;
}
}
if (string.IsNullOrEmpty(audioFile.Album))
{
string[] parts = relativePath.Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
int depth = parts.Length - 1;
string partToParse = parts[depth < 1 ? 0 : depth - 1];
if (partToParse.Contains("-"))
{
partToParse = partToParse.Split(new char[] { '-' })[0].Trim();
}
audioFile.Album = partToParse;
if (audioFile.Album == string.Empty)
{
audioFile.Album = null;
}
}
if (string.IsNullOrEmpty(audioFile.Title))
{
audioFile.Title = Path.GetFileNameWithoutExtension(file).Trim();
if (audioFile.Title.Contains("-"))
{
audioFile.Title = audioFile.Title.Split(new char[] { '-' }, 2)[1].Trim();
}
while (!string.IsNullOrEmpty(audioFile.Title) && char.IsDigit(audioFile.Title[0]))
{
if (audioFile.Title.Length == 1)
{
audioFile.Title = null;
break;
}
audioFile.Title = audioFile.Title.Substring(1, audioFile.Title.Length - 1).Trim();
}
if (audioFile.Title == string.Empty)
{
audioFile.Title = null;
}
}
audioFile.DeviceUuid = device.Uuid;
audioFile.LastSeen = DateTime.UtcNow;
audioFile.RelativePath = relativePath;
Logger.Debug(audioFile.ToString());
// See if we have an existing file for this one
AudioFile existing = allAudioFiles.Where(existingFile => existingFile.RelativePath == audioFile.RelativePath).FirstOrDefault();
bool existingIsEqual = false;
if (existing != null)
{
existingIsEqual = audioFile.Equals(existing);
if (!existingIsEqual)
{
if ((existing.Album != audioFile.Album) || (existing.Artist != audioFile.Artist))
{
existing.ArtworkSearchDate = null;
}
existing.Album = audioFile.Album;
existing.Artist = audioFile.Artist;
existing.Duration = audioFile.Duration;
existing.LastSeen = audioFile.LastSeen;
existing.Title = audioFile.Title;
existing.TrackNumber = audioFile.TrackNumber;
audioFile = existing;
}
}
// The "AC/DC Fix"
if ((audioFile.Artist == "AC;DC") || (audioFile.Artist == "AC; DC") || (audioFile.Artist == "AC_DC"))
{
audioFile.Artist = "AC/DC";
}
// Add to update notification if new or if it is updated
if (audioFile.AudioFileId == 0)
{
notification.NewFiles.Add(audioFile);
}
else if (!existingIsEqual)
{
notification.UpdatedFiles.Add(audioFile);
}
// Deal database updates and changes and firing of notifications if we have reached enough
// files in this object and create a new object
if (notification.ReadyToSend)
{
ProcessFileChanges(notification);
notification = new AudioLibraryUpdateNotification();
}
}
catch (Exception ex)
{
Logger.Error("Failed to probe file " + file, ex);
}
}
}
catch
{
}
// Deal database updates and changes and firing of notifications if we have reached enough
// files in this object and create a new object
ProcessFileChanges(notification);
}
/// <summary>
/// This thread is used to probe all files on a particular device.
/// </summary>
/// <param name='args'>
/// The arguments to pass to the thread.
/// </param>
private void AudioDiscoveryThread(object args)
{
try
{
// Cast object from thread arguments
MountedDevice device = (MountedDevice)args;
// Get a list from database of all existing tracks
AudioFile[] allAudioFiles = AudioFileFactory.ApplicationInstance.ReadAll().Where(file => file.DeviceUuid == device.Uuid).ToArray();
// Recursively gain two lists - new and existing files. We always process new files
// first, then online, then we check for changed to online and fire updated
// and finally deleted to give quickest response to the client
List <string> newFiles = new List <string>();
List <string> existingFiles = new List <string>();
GetAllFiles(device, "/", allAudioFiles, newFiles, existingFiles);
// Now process the file sets
DateTime startTime = DateTime.UtcNow;
Thread.CurrentThread.Priority = ThreadPriority.AboveNormal;
ProcessFileList(device, newFiles, allAudioFiles);
AudioLibraryUpdateNotification notification = new AudioLibraryUpdateNotification();
if (existingFiles.Count > 0)
{
foreach (string relativePath in existingFiles)
{
AudioFile file = allAudioFiles.FirstOrDefault(f => f.RelativePath == relativePath);
if (file == null)
{
continue;
}
notification.OnlineFiles.Add(file);
}
ProcessFileChanges(notification);
notification = new AudioLibraryUpdateNotification();
}
Thread.CurrentThread.Priority = ThreadPriority.BelowNormal;
ProcessFileList(device, existingFiles, allAudioFiles);
Thread.CurrentThread.Priority = ThreadPriority.Normal;
foreach (AudioFile file in allAudioFiles)
{
if (file.LastSeen < startTime)
{
notification.DeletedFiles.Add(file.AudioFileId);
}
}
if (notification.DeletedFiles.Count > 0)
{
Controller.NotificationNetworkServer.SendNotification(notification);
}
AudioFileFactory.ApplicationInstance.RemoveForUuid(device.Uuid, startTime);
}
catch (ThreadAbortException)
{
}
catch (Exception ex)
{
Logger.Error("Fatal error during audio file discovery", ex);
}
finally
{
lock (_discoveryThreads)
{
MountedDevice key = null;
foreach (KeyValuePair <MountedDevice, Thread> kvp in _discoveryThreads)
{
if (kvp.Value == Thread.CurrentThread)
{
key = kvp.Key;
break;
}
}
if ((key != null) && (_discoveryThreads.ContainsKey(key)))
{
_discoveryThreads.Remove(key);
}
}
}
}
