/// <summary>
/// Will capture a single image and store it in the baseline images list. Each image will be used to determine if we have an alert or not.
/// </summary>
private async void CaptureBaseLineImage()
{
try
{
lowLagCapture =
await MediaCaptureElement.PrepareLowLagPhotoCaptureAsync(ImageEncodingProperties.CreateUncompressed(MediaPixelFormat.Bgra8));
CapturedPhoto capturedPhoto = await lowLagCapture.CaptureAsync();
SoftwareBitmap softwareBitmap = capturedPhoto.Frame.SoftwareBitmap;
WriteableBitmap writeableBitmap = new WriteableBitmap(softwareBitmap.PixelWidth, softwareBitmap.PixelHeight);
softwareBitmap.CopyToBuffer(writeableBitmap.PixelBuffer);
byte[] imageBytes = new byte[4 * softwareBitmap.PixelWidth * softwareBitmap.PixelHeight];
softwareBitmap.CopyToBuffer(imageBytes.AsBuffer());
if (baselineImages.Count > 6)
{
baselineImages.Clear();
DisplayImages.Clear();
}
baselineImages.Add(imageBytes);
DisplayImages.Add(writeableBitmap);
await lowLagCapture.FinishAsync();
}
catch (Exception)
{
// Sometimes when you serial click the capture button we get an explosion...
// Eat it and move on
}
}
/// <summary>
/// Captures a photo and sends it off for analysis
/// </summary>
private async void TakePhoto()
{
try
{
lowLagCapture =
await MediaCaptureElement.PrepareLowLagPhotoCaptureAsync(ImageEncodingProperties.CreateUncompressed(MediaPixelFormat.Bgra8));
CapturedPhoto capturedPhoto = await lowLagCapture.CaptureAsync();
SoftwareBitmap softwareBitmap = capturedPhoto.Frame.SoftwareBitmap;
await lowLagCapture.FinishAsync();
byte[] imageBytes = new byte[4 * softwareBitmap.PixelWidth * softwareBitmap.PixelHeight];
softwareBitmap.CopyToBuffer(imageBytes.AsBuffer());
bool isAlert = CheckForMotion(imageBytes);
if (isAlert)
{
WriteableBitmap writeableBitmap = new WriteableBitmap(softwareBitmap.PixelWidth, softwareBitmap.PixelHeight);
softwareBitmap.CopyToBuffer(writeableBitmap.PixelBuffer);
AlertDisplayImages.Add(new AlertDisplayImageModel()
{
AlertDisplayImage = writeableBitmap, AlertDisplayCaption = DateTime.Now.ToString()
});
delayTimer.Interval = new TimeSpan(0, 0, ConfigurationSettings.AppConfig.AlertDelay);
captureTimer.Stop();
delayTimer.Tick += OnDelayTimerTick;
delayTimer.Start();
// It seems silly that we need to capture a second image but the first image that was captured isn't in a format that can
// be easily emailed. This being the case, I decided it'd just be easier to grab another capture in the correct format and
// email it off. The delta between the images is negligable
var stream = new InMemoryRandomAccessStream();
await MediaCaptureElement.CapturePhotoToStreamAsync(ImageEncodingProperties.CreateJpeg(), stream);
await Task.Delay(10);
streamList.Add(stream);
if (AutoSaveAlertImages)
{
}
if (ConfigurationSettings.AppConfig.SendEmails && streamList.Count > ConfigurationSettings.AppConfig.AlertThreshold)
{
captureTimer.Stop();
await SendAlertEmail(streamList);
await Task.Delay(new TimeSpan(0, 1, 0));
}
}
}
catch (Exception error)
{
// Getting random COM errors. Just eat it and continue. There's nothing I can do about this.
}
}