/// <summary>
/// Play a sequence of a given file name.
/// </summary>
/// <param name="sequence"></param>
/// <returns></returns>
public static ContextStatus PlaySequence(Sequence sequence){
var status = new ContextStatus();
if (sequence == null)
{
throw new ArgumentNullException("sequence");
}
IEnumerable<IContext> contexts = VixenSystem.Contexts.Where(x => x.Name.Equals(sequence.Name) && (x.IsRunning || x.IsPaused));
if (contexts.Any(x => x.IsPaused))
{
foreach (var context in contexts)
{
if (context.IsPaused)
{
context.Resume();
}
}
status.Message = string.Format("Resumed {0}", sequence.Name);
}
else
{
string fileName = HttpUtility.UrlDecode(sequence.FileName);
ISequence seq = SequenceService.Instance.Load(fileName);
if (seq != null)
{
Logging.Info(string.Format("Web - Prerendering effects for sequence: {0}", sequence.Name));
Parallel.ForEach(seq.SequenceData.EffectData.Cast<IEffectNode>(), effectNode => effectNode.Effect.PreRender());
ISequenceContext context = VixenSystem.Contexts.CreateSequenceContext(
new ContextFeatures(ContextCaching.NoCaching), seq);
context.ContextEnded += context_ContextEnded;
context.Play(TimeSpan.Zero, seq.Length);
status.State = ContextStatus.States.Playing;
status.Sequence = new Sequence()
{
Name = context.Sequence.Name,
FileName = fileName
};
status.Message = string.Format("Playing sequence {0} of length {1}", sequence.Name, seq.Length);
}
else
{
status.Message = string.Format("Sequence {0} not found.", fileName);
}
}
return status;
}
private void UpdateContextStatus(object state)
{
_contextStatuses.Clear();
foreach (var context in VixenSystem.Contexts)
{
if (@"Web Server".Equals(context.Name))
{
//Skip the web server context.
continue;
}
var status = new ContextStatus()
{
Sequence = new Sequence()
{
Name = context.Name
},
Position = context.GetTimeSnapshot()
};
var sequenceContext = context as ISequenceContext;
if (sequenceContext != null)
{
status.Sequence.FileName = Path.GetFileName(sequenceContext.Sequence.FilePath);
}
if (context.IsPaused)
{
status.State = ContextStatus.States.Paused;
}
else if (context.IsRunning)
{
status.State = ContextStatus.States.Playing;
}
else
{
status.State = ContextStatus.States.Stopped;
status.Position = TimeSpan.Zero; //Ensure reported time is set to zero when context is stopped
}
_contextStatuses.Add(status);
}
BroadcastContextStates();
}
/// <summary>
/// Pause the current playing sequence.
/// </summary>
/// <returns>Status</returns>
public static ContextStatus PauseSequence(Sequence sequence)
{
var status = new ContextStatus();
IEnumerable<IContext> contexts = VixenSystem.Contexts.Where(x => x.Name.Equals(sequence.Name) && (x.IsRunning || x.IsPaused));
if (!contexts.Any())
{
status.Message = "Sequence not found.";
}
else
{
foreach (var context in contexts)
{
if (context.IsRunning)
{
context.Pause();
}
}
status.Message = string.Format(@"Sequence {0} paused.", sequence.Name);
}
return status;
}
