public override void OnCaptureCompleted(CameraCaptureSession session,
CaptureRequest request,
TotalCaptureResult result)
{
// Only update UI every so many frames
// Use an odd number here to ensure both even and odd exposures get an occasional update
long frameNumber = result.FrameNumber;
if (frameNumber % 3 != 0)
{
return;
}
Integer exposureComp = result.Get(CaptureResult.ControlAeExposureCompensation) as Integer;
if (exposureComp == null)
{
throw new RuntimeException("Cannot get exposure compensation.");
}
// Format exposure time nicely
Rational exposureStep = mParent.mCameraInfo.ExposureState.ExposureCompensationStep;
string exposureText = (exposureComp.FloatValue() * exposureStep.FloatValue()).ToString("0.00");
if (mParent.mRenderMode == ViewfinderProcessor.ModeNormal)
{
mParent.mAutoExposureText.Text = exposureText;
mParent.mEvenExposureText.Enabled = false;
mParent.mOddExposureText.Enabled = false;
mParent.mAutoExposureText.Enabled = true;
if (exposureComp.IntValue() != mParent.mAutoExposure)
{
mParent.mCameraControl.SetExposureCompensationIndex(mParent.mAutoExposure);
}
}
else if ((frameNumber & 1) == 0)
{
mParent.mEvenExposureText.Text = exposureText;
mParent.mEvenExposureText.Enabled = true;
mParent.mOddExposureText.Enabled = true;
mParent.mAutoExposureText.Enabled = false;
}
else
{
mParent.mOddExposureText.Text = exposureText;
mParent.mEvenExposureText.Enabled = true;
mParent.mOddExposureText.Enabled = true;
mParent.mAutoExposureText.Enabled = false;
}
}
