public override void DidOutputSampleBuffer(AVCaptureOutput captureOutput, CMSampleBuffer sampleBuffer, AVCaptureConnection connection)
{
try {
LuminanceSource luminance;
using (var pixelBuffer = sampleBuffer.GetImageBuffer() as CVPixelBuffer) {
if (bytes == null)
{
bytes = new byte [pixelBuffer.Height * pixelBuffer.BytesPerRow];
}
pixelBuffer.Lock(0);
Marshal.Copy(pixelBuffer.BaseAddress, bytes, 0, bytes.Length);
luminance = new RGBLuminanceSource(bytes, pixelBuffer.Width, pixelBuffer.Height);
pixelBuffer.Unlock(0);
}
var binarized = new BinaryBitmap(new HybridBinarizer(luminance));
var result = reader.decodeWithState(binarized);
//parent.session.StopRunning ();
if (parent.QrScan != null)
{
parent.QrScan(result);
}
} catch (ReaderException) {
// ignore this exception; it happens every time there is a failed scan
} catch (Exception e) {
// TODO: this one is unexpected.. log or otherwise handle it
throw;
} finally {
try {
// lamest thing, but seems that this throws :(
sampleBuffer.Dispose();
} catch { }
}
}