/// <summary>
/// The <see cref="VariablePhotoSequenceCapture.Stopped"/> event handler.
/// </summary>
/// <param name="sender">Event sender.</param>
/// <param name="e">Event data.</param>
private void PhotoSequenceOnStopped(VariablePhotoSequenceCapture sender, object e)
{
this.photoSequence.PhotoCaptured -= this.PhotoSequenceOnPhotoCaptured;
this.photoSequence.Stopped -= this.PhotoSequenceOnStopped;
this.started = false;
this.NotifyStopped();
}
/// <summary>
/// The <see cref="VariablePhotoSequenceCapture.PhotoCaptured"/> event handler.
/// </summary>
/// <param name="sender">Event sender.</param>
/// <param name="e">The <see cref="VariablePhotoCapturedEventArgs"/> instance containing the event data.</param>
private void PhotoSequenceOnPhotoCaptured(VariablePhotoSequenceCapture sender, VariablePhotoCapturedEventArgs e)
{
Tracing.Trace("VariablePhotoCapture: Photo captured. Time offset: {0}, frame index: {1}", e.CaptureTimeOffset, e.UsedFrameControllerIndex);
EventHandler <CapturedFrame> handler = this.PhotoCaptured;
if (handler != null)
{
handler.Invoke(this, e.Frame);
}
}
/// <summary>
/// Initializes the photo capture on the current camera device.
/// </summary>
/// <param name="parameters">Capture parameters.</param>
/// <returns>Awaitable task.</returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="parameters"/> is <see langword="null"/>.
/// <para>-or-</para>
/// Image encoding is not set in the <paramref name="parameters"/>.
/// </exception>
/// <exception cref="InvalidOperationException">Photo sequence is already initialized.</exception>
public override async Task InitializeAsync(CaptureParameters parameters)
{
if (parameters == null || parameters.ImageEncoding == null)
{
throw new ArgumentNullException("parameters");
}
if (this.photoSequence != null)
{
throw new InvalidOperationException("Variable photo capture is already initialized.");
}
this.UpdateCameraSettings(parameters);
this.photoSequence = await this.CameraController.MediaCapture.PrepareVariablePhotoSequenceCaptureAsync(parameters.ImageEncoding);
}
/// <summary>
/// Unloads the internal sequence objects.
/// </summary>
/// <returns>Awaitable task.</returns>
public override async Task UnloadAsync()
{
if (this.photoSequence == null)
{
return;
}
await this.StopAsync();
try
{
await this.photoSequence.FinishAsync();
}
catch (Exception e)
{
Tracing.Trace("VariablePhotoCapture: Exception while finishing capture:\r\n{0}", e);
}
this.photoSequence = null;
}
/// <summary>
/// Initializes the photo capture on the current camera device.
/// </summary>
/// <param name="parameters">Capture parameters.</param>
/// <returns>Awaitable task.</returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="parameters"/> is <see langword="null"/>.
/// <para>-or-</para>
/// Image encoding is not set in the <paramref name="parameters"/>.
/// </exception>
/// <exception cref="InvalidOperationException">Photo sequence is already initialized.</exception>
public override async Task InitializeAsync(CaptureParameters parameters)
{
if (parameters == null || parameters.ImageEncoding == null)
{
throw new ArgumentNullException("parameters");
}
if (this.photoSequence != null)
{
throw new InvalidOperationException("Variable photo capture is already initialized.");
}
this.UpdateCameraSettings(parameters);
this.photoSequence = await this.CameraController.MediaCapture.PrepareVariablePhotoSequenceCaptureAsync(parameters.ImageEncoding);
}
/// <summary>
/// The <see cref="VariablePhotoSequenceCapture.Stopped"/> event handler.
/// </summary>
/// <param name="sender">Event sender.</param>
/// <param name="e">Event data.</param>
private void PhotoSequenceOnStopped(VariablePhotoSequenceCapture sender, object e)
{
this.photoSequence.PhotoCaptured -= this.PhotoSequenceOnPhotoCaptured;
this.photoSequence.Stopped -= this.PhotoSequenceOnStopped;
this.started = false;
this.NotifyStopped();
}
/// <summary>
/// The <see cref="VariablePhotoSequenceCapture.PhotoCaptured"/> event handler.
/// </summary>
/// <param name="sender">Event sender.</param>
/// <param name="e">The <see cref="VariablePhotoCapturedEventArgs"/> instance containing the event data.</param>
private void PhotoSequenceOnPhotoCaptured(VariablePhotoSequenceCapture sender, VariablePhotoCapturedEventArgs e)
{
Tracing.Trace("VariablePhotoCapture: Photo captured. Time offset: {0}, frame index: {1}", e.CaptureTimeOffset, e.UsedFrameControllerIndex);
EventHandler<CapturedFrame> handler = this.PhotoCaptured;
if (handler != null)
{
handler.Invoke(this, e.Frame);
}
}
/// <summary>
/// Unloads the internal sequence objects.
/// </summary>
/// <returns>Awaitable task.</returns>
public override async Task UnloadAsync()
{
if (this.photoSequence == null)
{
return;
}
await this.StopAsync();
try
{
await this.photoSequence.FinishAsync();
}
catch (Exception e)
{
Tracing.Trace("VariablePhotoCapture: Exception while finishing capture:\r\n{0}", e);
}
this.photoSequence = null;
}
public VariablePhotoSequenceCaptureEvents(VariablePhotoSequenceCapture This)
{
this.This = This;
}
