/// <summary>
/// Returns current camera frame. To use this method camera must be in capturing state.
/// </summary>
/// <param name="captureElement"></param>
/// <returns></returns>
public async Task <VideoFrame> GetPreviewFrameAsync()
{
IsStreaming.CheckIfFulfills("Camera", "streaming", true);
try
{
return(await mediaCapture.GetPreviewFrameAsync());
}
catch (Exception ex)
{
CleanUp();
throw new Exception($"Camera could not get preview frame: { ex.Message }. { Logger.GetExceptionLocalization(this) }");
}
}
/// <summary>
/// Stops previewing to capture element. To use this method camera needs to be in capturing state.
/// </summary>
/// <returns></returns>
public async Task StopPreviewAsync()
{
IsStreaming.CheckIfFulfills("Camera", "streaming", true);
CleanCaptureElement();
try
{
await mediaCapture.StopPreviewAsync();
}
catch (Exception ex)
{
CleanUp();
throw new Exception($"Camera could not stop previewing: { ex.Message }. { Logger.GetExceptionLocalization(this) }");
}
}
/// <summary>
/// Starts previewing video in capture element. To use this method camera mustn't be in capturing state.
/// </summary>
/// <param name="captureElement"></param>
/// <returns></returns>
public async Task StartPreviewAsync(CaptureElement captureElement)
{
IsStreaming.CheckIfFulfills("Camera", "streaming", false);
isInitialized.CheckIfFulfills("Camera", "initialized", true);
captureElement.Source = mediaCapture;
try
{
await mediaCapture.StartPreviewAsync();
}
catch (Exception ex)
{
CleanUp();
throw new Exception($"Camera could not start previewing: { ex.Message }. { Logger.GetExceptionLocalization(this) }");
}
}
