/// <summary>
/// updates the signal quality/level and tuner locked statusses
/// </summary>
protected override void UpdateSignalQuality(bool force)
{
TimeSpan ts = DateTime.Now - _lastSignalUpdate;
if (ts.TotalMilliseconds < 5000)
{
return;
}
if (GraphRunning() == false)
{
_tunerLocked = false;
_signalLevel = 0;
_signalPresent = false;
_signalQuality = 0;
return;
}
if (CurrentChannel == null)
{
_tunerLocked = false;
_signalLevel = 0;
_signalPresent = false;
_signalQuality = 0;
return;
}
if (_graphState == GraphState.Idle || _interfaceB2C2TunerCtrl == null)
{
_tunerLocked = false;
_signalQuality = 0;
_signalLevel = 0;
return;
}
int level, quality;
_tunerLocked = (_interfaceB2C2TunerCtrl.CheckLock() == 0);
_interfaceB2C2TunerCtrl.GetSignalQuality(out quality);
_interfaceB2C2TunerCtrl.GetSignalStrength(out level);
if (level < 0)
{
level = 0;
}
if (level > 100)
{
level = 100;
}
if (quality < 0)
{
quality = 0;
}
if (quality > 100)
{
quality = 100;
}
_signalQuality = quality;
_signalLevel = level;
_lastSignalUpdate = DateTime.Now;
}
