public void Analyze(ChannelData data)
{
if (data == null || data.Samples.Length == 0)
{
return;
}
maxValue = data.RefValue;
totalSamples = data.Samples.Length;
nonZeroSamples = 0;
Int32 s;
for (Int32 i = 0; i < totalSamples; i++)
{
s = data.Samples[i];
avg = ((avg * i) + s) / (i + 1);
rms += (((double)s) * s);
if (s == 0)
{
zeroSamples++;
continue;
}
avgNonZero = ((avgNonZero * nonZeroSamples) + s) / (nonZeroSamples + 1);
nonZeroSamples++;
if (s < 0)
{
if (min == 0 || (s < min))
{
min = s;
}
}
else
{
if (max == 0 || (s > max))
{
max = s;
}
}
}
rms = Math.Sqrt(rms / totalSamples);
zeroSamplesPct = ((double)zeroSamples) / totalSamples;
nonZeroSamplesPct = ((double)nonZeroSamples) / totalSamples;
}
private void ReadDataChunk(BinaryReader br, Int32 size)
{
BytesPerSample = Format.AvgBytesPerSec / (Format.Channels * Format.SamplesPerSec);
Samples = size / (BytesPerSample * Format.Channels);
Duration = (double)Samples / Format.SamplesPerSec;
Channels = new ChannelData[Format.Channels];
negativeMask = 0;
for (int i = 0; i < (32 - Format.BitsPerSample); i++)
{
negativeMask = (negativeMask << 1) | 1;
}
for (int i = 0; i < Format.BitsPerSample; i++)
{
negativeMask = (negativeMask << 1) | 0;
}
for (int c = 0; c < Format.Channels; c++)
{
Channels[c] = new ChannelData(Format, Samples);
Channels[c].Name = "Channel " + c;
}
PctRead = 0;
CastPctReadUpdate();
int deltaPctUpd = Samples / 100;
for (int s = 0; s < Samples; s++)
{
if (s % deltaPctUpd == 0)
{
PctRead = s / deltaPctUpd;
CastPctReadUpdate();
}
for (int channel = 0; channel < Format.Channels; channel++)
{
Channels[channel].Samples[s] = ReadSample(br);
}
}
}
