markheath
commented
8 months ago Often casting issues are to do with creating a COM object on one thread, and then trying to access it from a different thread. Try to keep access to a single thread if possible and see if that helps.
Hello, in my GUI app I am implementing audio player using NAudio. The way it is working now is that I am creating AudioFileReader, which I then pass into VolumeSampleProvider constructor as a source ISampleProvider. Then I initialize WaveOut, using this VolumeSampleProvider as an argument to the WaveOut constructor. The reason I do this is that I need the functionality to change volume during the playback, sometimes to values larger than 1 (if, for example, the maximum peak of the input audio file is not normalized to the max value, so I basically normalize the samples in real time..) In my app, I have a simple progressbar, and when user clicks or drags it to some position during the playback, it first calls WaveOut.Stop, then change AudioFileReader.Position accordingly and then call WaveOut.Play() again. However, while during this, I keep getting this error - sometimes less, sometimes more often. What is also odd is that this error never occurs while dragging the progressbar while playback is paused or stopped (for which I am using the same WaveOut.Pause() and WaveOut.Stop() methods, similar as in the Position changing method..) What can be causing this issue?