New Post: IWaveProvider from bytes array

Hi
I need to normalize audio (put volume in [1; -1] interval).

So I used code from Naudio demo, added few lines, and got the following:

using (var reader = new MediaFoundationReader("d:\\Projects\\audio.wma"))
{
    ISampleProvider sp;
    int sourceSamples;
    if (reader.WaveFormat.Encoding == WaveFormatEncoding.Pcm)
    {
        if (reader.WaveFormat.BitsPerSample == 16)
        {
            sp = new Pcm16BitToSampleProvider(reader);
            sourceSamples = (int) (reader.Length/2);
        }
        else if (reader.WaveFormat.BitsPerSample == 24)
        {
            sp = new Pcm24BitToSampleProvider(reader);
            sourceSamples = (int) (reader.Length/3);
        }
        else
        {
            throw new ArgumentException("Currently only 16 or 24 bit PCM samples are supported");
        }
    }
    else if (reader.WaveFormat.Encoding == WaveFormatEncoding.IeeeFloat)
    {
        sp = new WaveToSampleProvider(reader);
        sourceSamples = (int) (reader.Length/4);
    }
    else
    {
        throw new ArgumentException("Must be PCM or IEEE float");
    }
    sampleData = new float[sourceSamples];
    int n = sp.Read(sampleData, 0, sourceSamples);
}
float maxValue = 0.0f;
float minValue = 0.0f;
for (var i = 1; i < sampleData.Length; i++)
{
    if (sampleData[i] > maxValue)
    {
        maxValue = sampleData[i];
    }
    else if (sampleData[i] < minValue)
    {
        minValue = sampleData[i];
    }
}
var coef1Channel = 1/maxValue;
var coef2Channel = -1/minValue;
for (var i = 1; i < sampleData.Length; i++)
{
    sampleData[i] = sampleData[i] > 0 ? sampleData[i]*coef1Channel : 
                                                          sampleData[i]*coef2Channel;
}
}

so after this audio volume is normalized.
But I have 2 questions:

1. How can I convert this bytes array back to ISampleProvider or to IWaveProvider?
2. Is it possible to use MediaFoundationReader from stream instead of file?
   

Thanks for helping.