private int GetSampleLength(string path)
{
IAudioSource audioSource;
audioSource = AudioReadWrite.GetAudioSource(path);
audioSource.Close();
if ((audioSource.BitsPerSample != 16) ||
(audioSource.ChannelCount != 2) ||
(audioSource.SampleRate != 44100) ||
(audioSource.Length > Int32.MaxValue))
{
throw new Exception("Audio format is invalid.");
}
return((int)audioSource.Length);
}
private IAudioSource GetAudioSource(int sourceIndex)
{
SourceInfo sourceInfo = _sources[sourceIndex];
IAudioSource audioSource;
if (sourceInfo.Path == null)
{
audioSource = new SilenceGenerator(sourceInfo.Offset + sourceInfo.Length);
}
else
{
audioSource = AudioReadWrite.GetAudioSource(sourceInfo.Path);
}
audioSource.Position = sourceInfo.Offset;
return(audioSource);
}