internal override TestFrameResult TestTimeStamp(StateContext context, OsdFrameInfo frameTimestamp)
{
if (lastTimeStamp.SecondField.FieldNumber + 1 == frameTimestamp.FirstField.FieldNumber &&
Math.Abs(new TimeSpan(frameTimestamp.FirstField.TimeStamp.Ticks - lastTimeStamp.SecondField.TimeStamp.Ticks).TotalMilliseconds - 20) <= 1)
{
// All good
lastTimeStamp = frameTimestamp;
return TestFrameResult.Okay;
}
suggestedTimeStampTestResult = TestFrameResult.Undefined;
// Find, record and try to solve problems
#region Frame/Field Number Corrections
long expectedFieldNumber = lastTimeStamp.SecondField.FieldNumber + 1;
int attempts = 5;
while (expectedFieldNumber != frameTimestamp.FirstField.FieldNumber && attempts > 0)
{
// Problem with first frame number
long correctedFieldNo = CorrectField(expectedFieldNumber, frameTimestamp.FirstField.FieldNumber);
frameTimestamp.FirstField.FieldNumber = correctedFieldNo;
frameTimestamp.FrameNumber = correctedFieldNo;
attempts--;
}
attempts = 5;
expectedFieldNumber = frameTimestamp.FirstField.FieldNumber + 1;
while (expectedFieldNumber != frameTimestamp.SecondField.FieldNumber && attempts > 0)
{
// Problem with first frame number
long correctedFieldNo = CorrectField(expectedFieldNumber, frameTimestamp.SecondField.FieldNumber);
frameTimestamp.SecondField.FieldNumber = correctedFieldNo;
attempts--;
}
#endregion
#region TimeStamp Corrections
long expectedTicks = lastTimeStamp.SecondField.TimeStamp.Ticks + FIELD_LENGTH_IN_TICKS;
while (Math.Abs(new TimeSpan(frameTimestamp.FirstField.TimeStamp.Ticks - expectedTicks).TotalMilliseconds) > 1)
{
// Correct the timestamp of the first field
long correctedTicks = CorrectTimeStamp(expectedTicks, frameTimestamp.FirstField.TimeStamp.Ticks);
frameTimestamp.FirstField.TimeStamp = new DateTime(correctedTicks);
}
#endregion
frameTimestamp.ReCalculate();
lastTimeStamp = frameTimestamp;
return suggestedTimeStampTestResult;
}
private void RequestFullTimeStampDump()
{
suggestedTimeStampTestResult = TestFrameResult.ErrorSaveScreenShotImages;
}
