private TimeSpan GetDuration()
{
// TODO: What should we do if DirectX throws an exception (e.g. the path is really
// not a valid audio or video stream)? For now, just ignore exceptions.
try
{
if (SessionComponentDefinition.GetIsAudio(Path))
{
using (var audio = new Microsoft.DirectX.AudioVideoPlayback.Audio(Path))
{
return(TimeSpan.FromSeconds((int)audio.Duration));
}
}
else if (SessionComponentDefinition.GetIsVideo(Path))
{
using (var video = new Microsoft.DirectX.AudioVideoPlayback.Video(Path))
{
return(TimeSpan.FromSeconds((int)video.Duration));
}
}
}
catch (ThreadAbortException)
{
//fine, just return
}
catch (Exception e)
{
Palaso.Reporting.ErrorReport.NotifyUserOfProblem(e, "Could not get duration of " + Path);
}
return(new TimeSpan());
}
/// <summary>
/// Increases volume with a step
/// and adjusts the progress bar
/// </summary>
/// <param name="video">A video object</param>
/// <param name="slider">A custom slider object</param>
public static void VolumeUp(DirectXAudioAllias audio, CustomSlider slider)
{
if (slider.Value < MaxProgressBarValue)
{
slider.Value += VolumeStep;
if (CheckException.CheckNull(audio))
{
HandleAudio(audio, slider.Value);
}
}
}
/// <summary>
/// Initializes the volume of the video at start
/// with the value of the progress bar
/// </summary>
/// <param name="video">A video object</param>
/// <param name="slider">A custom slider object</param>
public static void VolumeInit(DirectXAudioAllias audio, CustomSlider slider)
{
if (audio != null)
{
audio.Volume = Convert.ToInt32(slider.Value * (ValueNormalizer)+MinVolumeValue);
if(audio.Volume == MinVolumeValue)
{
audio.Volume = NoSound;
}
}
}
private void InitAudio()
{
if (_filePath == null)
{
throw new ArgumentException("ÎÞЧµÄÊôÐÔ FilePath");
}
else
{
a = new Microsoft.DirectX.AudioVideoPlayback.Audio(_filePath);
}
}
private void InitAudio()
{
if (_filePath == null)
{
throw new ArgumentException("�������� FilePath");
}
else
{
a = new Microsoft.DirectX.AudioVideoPlayback.Audio(_filePath);
}
}
/// <summary>
/// Decreases volume by a step
/// and adjusts the progress bar
/// </summary>
/// <param name="video">A video object</param>
/// <param name="slider">A custom slider object</param>
public static void VolumeDown(DirectXAudioAllias audio, CustomSlider slider)
{
if (slider.Value > slider.Minimum)
{
slider.Value -= VolumeStep;
if (CheckException.CheckNull(audio))
{
HandleAudio(audio, slider.Value);
}
}
}
/// <summary>
/// Increases volume with a step
/// and adjusts the progress bar
/// </summary>
/// <param name="video">A video object</param>
/// <param name="slider">A custom slider object</param>
public static void VolumeUp(DirectXAudioAllias audio, CustomSlider slider)
{
if (slider.Value < MaxProgressBarValue)
{
slider.Value += VolumeStep;
if (CheckException.CheckNull(audio))
{
HandleAudio(audio, slider.Value);
}
}
}
/// <summary>
/// Initializes the volume of the video at start
/// with the value of the progress bar
/// </summary>
/// <param name="video">A video object</param>
/// <param name="slider">A custom slider object</param>
public static void VolumeInit(DirectXAudioAllias audio, CustomSlider slider)
{
if (audio != null)
{
audio.Volume = Convert.ToInt32(slider.Value * (ValueNormalizer) + MinVolumeValue);
if (audio.Volume == MinVolumeValue)
{
audio.Volume = NoSound;
}
}
}
/// <summary>
/// Checks if the value is adequate and sets the volume
/// </summary>
/// <param name="video">A video object</param>
/// <param name="value">An integer value</param>
private static void HandleAudio(DirectXAudioAllias audio, int value)
{
if (value != 0)
{
audio.Volume = Convert.ToInt32(GetCorrectValue(value));
}
else
{
audio.Volume = NoSound;
}
}
/// <summary>
/// Decreases volume by a step
/// and adjusts the progress bar
/// </summary>
/// <param name="video">A video object</param>
/// <param name="slider">A custom slider object</param>
public static void VolumeDown(DirectXAudioAllias audio, CustomSlider slider)
{
if (slider.Value > slider.Minimum)
{
slider.Value -= VolumeStep;
if (CheckException.CheckNull(audio))
{
HandleAudio(audio, slider.Value);
}
}
}
/// <summary>
/// Checks if the value is adequate and sets the volume
/// </summary>
/// <param name="video">A video object</param>
/// <param name="value">An integer value</param>
private static void HandleAudio(DirectXAudioAllias audio, int value)
{
if (value != 0)
{
audio.Volume = Convert.ToInt32(GetCorrectValue(value));
}
else
{
audio.Volume = NoSound;
}
}