/// <summary>
/// Begins processing the current media item, returning <c>true</c> when the action succeeds.
/// Specifically, a few properties are updated and the item is persisted to the data store.
/// If the item cannot be processed (may be null or has a status other than 'Waiting'), this
/// function returns <c>false</c>.
/// </summary>
/// <returns>Returns <c>true</c> when the item has successfully started processing; otherwise
/// <c>false</c>.</returns>
private bool BeginProcessItem()
{
MediaQueueItem mqItem = GetCurrentMediaQueueItem();
if (mqItem == null)
{
return(false);
}
if (!mqItem.Status.Equals(MediaQueueItemStatus.Waiting))
{
ProcessNextItemInQueue(false);
return(false);
}
mqItem.Status = MediaQueueItemStatus.Processing;
mqItem.DateConversionStarted = DateTime.Now;
//Factory.GetDataProvider().MediaQueue_Save(mediaQueueDto);
mqItem.Save();
// Update the item in the collection.
//MediaQueueItems[mediaQueueDto.MediaQueueId] = mediaQueueDto;
return(true);
}
/// <summary>
/// Complete processing the current media item by updating the media queue instance and
/// reseting the status of the conversion queue.
/// </summary>
/// <param name="settings">An instance of <see cref="MediaConversionSettings" /> containing
/// settings and results used in the conversion. A null value is acceptable.</param>
private void CompleteProcessItem(MediaConversionSettings settings)
{
// Update status and persist to data store
MediaQueueItem mqItem = GetCurrentMediaQueueItem();
mqItem.DateConversionCompleted = DateTime.Now;
if (settings != null && settings.FileCreated)
{
mqItem.Status = MediaQueueItemStatus.Complete;
}
else
{
mqItem.Status = MediaQueueItemStatus.Error;
var fileName = (settings != null && !String.IsNullOrEmpty(settings.FilePathSource) ? Path.GetFileName(settings.FilePathSource) : "<Unknown>");
string msg = String.Format(CultureInfo.CurrentCulture, "Unable to process file '{0}'.", fileName);
RecordEvent(msg, settings);
}
//Factory.GetDataProvider().MediaQueue_Save(mediaQueueDto);
mqItem.Save();
// Update the item in the collection.
//MediaQueueItems[mediaQueueDto.MediaQueueId] = mediaQueueDto;
Reset();
}
/// <summary>
/// Adds the specified <paramref name="mediaObject" /> to the queue. It will be processed in a first-in, first-out
/// order. If the media object is already waiting in the queue, no action is taken.
/// </summary>
/// <param name="mediaObject">The media object to be processed.</param>
/// <param name="conversionType">Type of the conversion.</param>
public void Add(IGalleryObject mediaObject, MediaQueueItemConversionType conversionType)
{
lock (_sharedLock)
{
var mqItem = new MediaQueueItem
{
MediaQueueId = int.MinValue,
MediaObjectId = mediaObject.Id,
Status = MediaQueueItemStatus.Waiting,
ConversionType = conversionType,
RotationAmount = mediaObject.CalculateNeededRotation(),
StatusDetail = String.Empty,
DateAdded = DateTime.Now,
DateConversionStarted = null,
DateConversionCompleted = null
};
mqItem.Save();
//Factory.GetDataProvider().MediaQueue_Save(mediaQueueDto);
MediaQueueItemDictionary.TryAdd(mqItem.MediaQueueId, mqItem);
}
}
/// <summary>
/// Update the status of the <paramref name="item" /> to the specified <paramref name="status" />.
/// </summary>
/// <param name="item">The item whose status is to be updated.</param>
/// <param name="status">The status to update the item to.</param>
private static void ChangeStatus(MediaQueueItem item, MediaQueueItemStatus status)
{
item.Status = status;
item.Save();
//Factory.GetDataProvider().MediaQueue_Save(item);
}
/// <summary>
/// Update the status of the <paramref name="item" /> to the specified <paramref name="status" />.
/// </summary>
/// <param name="item">The item whose status is to be updated.</param>
/// <param name="status">The status to update the item to.</param>
private static void ChangeStatus(MediaQueueItem item, MediaQueueItemStatus status)
{
item.Status = status;
item.Save();
//Factory.GetDataProvider().MediaQueue_Save(item);
}
/// <summary>
/// Adds the specified <paramref name="mediaObject" /> to the queue. It will be processed in a first-in, first-out
/// order. If the media object is already waiting in the queue, no action is taken.
/// </summary>
/// <param name="mediaObject">The media object to be processed.</param>
/// <param name="conversionType">Type of the conversion.</param>
public void Add(IGalleryObject mediaObject, MediaQueueItemConversionType conversionType)
{
lock (_sharedLock)
{
var mqItem = new MediaQueueItem
{
MediaQueueId = int.MinValue,
MediaObjectId = mediaObject.Id,
Status = MediaQueueItemStatus.Waiting,
ConversionType = conversionType,
RotationAmount = mediaObject.CalculateNeededRotation(),
StatusDetail = String.Empty,
DateAdded = DateTime.Now,
DateConversionStarted = null,
DateConversionCompleted = null
};
mqItem.Save();
//Factory.GetDataProvider().MediaQueue_Save(mediaQueueDto);
MediaQueueItemDictionary.TryAdd(mqItem.MediaQueueId, mqItem);
}
}