/// <summary>
/// This method populates the <see cref="DESAudioPlayer"/> with the
/// audio files that are called in the current trial at the
/// correct starting times, so that they could be played and seeked along with the
/// replay visualization.
/// </summary>
/// <param name="trialEvents">The complete <see cref="SortedList{Int32, TrialEvent}"/>
/// of trial events to be parsed for audio stimuli.</param>
/// <returns><strong>True</strong> if successful, otherwise <strong>false</strong>.</returns>
protected bool LoadAudioStimuli(SortedList<int, TrialEvent> trialEvents)
{
try
{
if (this.currentTrial == null)
{
return false;
}
// Initialize player
if (this.audioPlayer != null)
{
this.audioPlayer.Close();
this.audioPlayer = null;
}
List<long> slideStartTimes = new List<long>();
slideStartTimes.Add(0);
List<TrialEvent> audioEvents = new List<TrialEvent>();
foreach (TrialEvent trialEvent in trialEvents.Values)
{
if (trialEvent.Type == EventType.Slide)
{
slideStartTimes.Add(trialEvent.Time);
}
if (trialEvent.Type == EventType.Audio)
{
audioEvents.Add(trialEvent);
}
}
for (int i = 0; i < this.currentTrial.Count; i++)
{
Slide slide = this.currentTrial[i];
// Background sound
if (slide.BackgroundSound != null && slide.BackgroundSound.ShouldPlay)
{
// Create only if needed
if (this.audioPlayer == null)
{
this.audioPlayer = new DESAudioPlayer();
}
this.audioPlayer.AddSoundAtPosition(slide.BackgroundSound.FullFilename, slideStartTimes[i]);
}
// Parse elements for audio
foreach (VGElement element in slide.VGStimuli)
{
if (element.Sound != null && element.Sound.ShouldPlay && !element.Sound.ShowOnClick)
{
// Create only if needed
if (this.audioPlayer == null)
{
this.audioPlayer = new DESAudioPlayer();
}
this.audioPlayer.AddSoundAtPosition(element.Sound.FullFilename, slideStartTimes[i]);
}
}
}
// Parse elements for audio
foreach (TrialEvent audioEvent in audioEvents)
{
string filename = Path.Combine(
Document.ActiveDocument.ExperimentSettings.SlideResourcesPath,
Path.GetFileName(Path.GetFileName(audioEvent.Param)));
// Create only if needed
if (this.audioPlayer == null)
{
this.audioPlayer = new DESAudioPlayer();
}
this.audioPlayer.AddSoundAtPosition(filename, audioEvent.Time);
}
// Initialize audioplayer for replay on time.
if (this.audioPlayer != null)
{
this.audioPlayer.Initialize();
}
}
catch (Exception ex)
{
ExceptionMethods.HandleException(ex);
return false;
}
return true;
}
///////////////////////////////////////////////////////////////////////////////
// Construction and Initializing methods //
///////////////////////////////////////////////////////////////////////////////
#region CONSTRUCTION
/// <summary>
/// Initializes a new instance of the FormWithPicture class.
/// </summary>
public FormWithPicture()
{
this.audioPlayer = new DESAudioPlayer();
}
