public void OnImageAvailable(ImageReader reader)
{
if (_renderer.CancellationToken.IsCancellationRequested)
{
return;
}
// get the byte array data from the first plane
// of the image. This is sufficient for a JPEG
// image
Image image = reader.AcquireLatestImage();
if (image != null)
{
Image.Plane[] planes = image.GetPlanes();
ByteBuffer buffer = planes[0].Buffer;
byte[] bytes = new byte[buffer.Capacity()];
buffer.Get(bytes);
// close the image so we can handle another image later
image.Close();
(_renderer.Element as LabelReader)?.ProcessPhoto(bytes);
// keeps capturing images until the annotations have
// been processed into ssid and password sucessfully
_renderer.CurrentContext.RunOnUiThread(async() => {
try {
await Task.Delay(LabelReaderConstants.ImageCaptureDelayMilliseconds, _renderer.CancellationToken);
} catch (TaskCanceledException) {
return;
}
_renderer.CaptureImage();
});
}
}
public override void OnConfigured(CameraCaptureSession session)
{
// set a repeating request for a live preview of the camera
_renderer.Session = session;
CaptureRequest request = _renderer.Builder.Build();
_renderer.Request = request;
session.SetRepeatingRequest(request, _renderer.CaptureListener, null);
// wait a bit before we start capturing the label (while the user
// finds it and aligns it)
_renderer.CurrentContext.RunOnUiThread(async() => {
try {
await Task.Delay(LabelReaderConstants.ImageCaptureBeginDelayMilliseconds, _renderer.CancellationToken);
} catch (TaskCanceledException) {
return;
}
_renderer.CaptureImage();
});
}