private void OpenAudioFile()
{
var ofd = new OpenFileDialog();
if (ofd.ShowDialog() == true)
{
audioStream = new FileStream(ofd.FileName, FileMode.Open, FileAccess.Read, FileShare.Read);
canComputeFourier = true;
fileInfo = FileHeaderUtil.GetHeaderInfo(audioStream);
audioStream.Seek(0, SeekOrigin.Begin);
FirstSampleIndex = 0;
OnPropertyChanged("MaximumSampleIndex");
OnPropertyChanged("CanComputeFourier");
}
}
public static uint[] ReadSamples(Stream readFrom, int startAt, int windowSize, FileInfo info)
{
readFrom.Seek(-((info.SampleBits / 8) * (info.SampleCount - startAt)), SeekOrigin.End);
uint[] samples = new uint[windowSize];
int i = 0;
for (; i < windowSize; i++)
{
samples[i] = SampleUtils.ReadSample(readFrom, info);
if (info.Channels == Channel.Stereo)
{
SampleUtils.ReadSample(readFrom, info);
}
}
return(samples);
}