public static FixResult FindLengthOfClick(
AudioData audioData,
int initPosition,
int maxLength,
int positionOfLastProcessedSample)
{
var bestResult = new FixResult
{
Success = false
};
var position = initPosition;
var minPosition = GetMinPosition(
position,
positionOfLastProcessedSample,
10);
while (position > minPosition)
{
var backup = BackupPredictionErrAverage(
audioData,
position,
audioData.AudioProcessingSettings.HistoryLengthSamples + maxLength);
var result = TryToFix(audioData,
position,
maxLength,
initPosition - position);
if (result.BetterThan(bestResult))
{
bestResult = result;
}
audioData.CurrentChannelRestoreInitState(position, maxLength + 16);
RestorePredictionErrAverage(
audioData,
position,
audioData.AudioProcessingSettings.HistoryLengthSamples + maxLength,
backup);
position--;
}
return(bestResult);
}
private static FixResult TryToFix(
AudioData audioData,
int index,
int maxLength,
int minLength)
{
var result = new FixResult
{
Success = false,
Position = index,
Length = minLength,
ErrSum = float.MaxValue
};
ClickRepairer.Repair(audioData, index, minLength);
while (result.Length < maxLength)
{
ClickRepairer.Repair(audioData, index + result.Length, 1);
result.Length++;
if (!SeveralSamplesInARowAreSuspicious(
audioData, index + result.Length, 3))
{
result.ErrSum = CalcErrSum(
audioData, index + result.Length, 4);
// if click fixed
if (result.ErrSum < 0.01F) //0.005F //0.03F
{
result.Success = true;
break;
}
}
}
return(result);
}