//TODO: specyfy custom linq extension to merge sound from channels
public static void Add16BitSamples(this ISampleAggregator <float> aggregator, short[] data, IEnumerable <int> channelsVolume)
{
var volumeList = channelsVolume.ToList();
if (volumeList.Count == 0)
{
throw new ArgumentException("Channels not found!");
}
float tmpValue = 0;
var maxIntValue = 32767; var minIntValue = -32768; var divisior = 32768f;
var maxFloatValue = maxIntValue / divisior; var minFloatValue = minIntValue / divisior;
for (int i = 0; i < data.Length; i += volumeList.Count)
{
int channelsIndex = 0;
tmpValue = data.Skip(i).Take(volumeList.Count).Sum(x => (volumeList[channelsIndex++] / 100f) * x); // average value from all channels
if (tmpValue > maxIntValue)
{
aggregator.AddSample(maxFloatValue);
}
else if (tmpValue < minIntValue)
{
aggregator.AddSample(minFloatValue);
}
else
{
aggregator.AddSample(tmpValue / divisior); //[-1;1]
}
}
}
public Parser(ISampleAggregator sampleAggregatorArg)
{
sampleAggregator = sampleAggregatorArg;
}
