public void BitRate_EvaluateStatistics()
{
var helper = new HuffmanStatisticsHelper();
uint inputFileSize = 10;
uint outputFileSize = 5;
uint headerSize = 5;
BitRateStatistics expectedStatistics = new BitRateStatistics();
expectedStatistics.InputFileBitRate = 8;
expectedStatistics.OutputFileBitRate = 4;
expectedStatistics.OutputFileBitRateWithHeader = 8;
expectedStatistics.BitRateProportion = 0.5;
expectedStatistics.BitRateProportionWithHeader = 1;
BitRateStatistics statistics = helper.EvaluateBitRateStatistics(symbolsCount, inputFileSize, outputFileSize, headerSize);
Assert.AreEqual(expectedStatistics.InputFileBitRate, statistics.InputFileBitRate);
Assert.AreEqual(expectedStatistics.OutputFileBitRate, statistics.OutputFileBitRate);
Assert.AreEqual(expectedStatistics.OutputFileBitRateWithHeader, statistics.OutputFileBitRateWithHeader);
Assert.AreEqual(expectedStatistics.BitRateProportion, statistics.BitRateProportion);
Assert.AreEqual(expectedStatistics.BitRateProportionWithHeader, statistics.BitRateProportionWithHeader);
}
public BitRateStatistics EvaluateBitRateStatistics(int symbolsCount, uint inputFileSize, uint outputFileSize, uint headerSize)
{
double inputFileBitRate = Math.Round((double)(inputFileSize * 8) / (double)symbolsCount, DECIMAL_DIGITS);
double outputFileBitRate = Math.Round((double)(outputFileSize * 8) / (double)symbolsCount, DECIMAL_DIGITS);
double outputFileBitRateWithHeader = Math.Round((double)((outputFileSize + headerSize) * 8) / (double)symbolsCount, DECIMAL_DIGITS);
double bitRateProportion = Math.Round(outputFileBitRate / inputFileBitRate, DECIMAL_DIGITS);
double bitRateProportionWithHeader = Math.Round(outputFileBitRateWithHeader / inputFileBitRate, DECIMAL_DIGITS);
BitRateStatistics statistics = new BitRateStatistics();
statistics.InputFileBitRate = inputFileBitRate;
statistics.OutputFileBitRate = outputFileBitRate;
statistics.OutputFileBitRateWithHeader = outputFileBitRateWithHeader;
statistics.BitRateProportion = bitRateProportion;
statistics.BitRateProportionWithHeader = bitRateProportionWithHeader;
return(statistics);
}
