public static MemoryStream GetWavAsMemoryStream(this Stream data, int sampleRate, int audioChannels, int bitsPerSample)
{
MemoryStream memoryStream = new MemoryStream();
WavExtensions.WriteHeader((Stream)memoryStream, sampleRate, audioChannels, bitsPerSample);
WavExtensions.SeekPastHeader((Stream)memoryStream);
data.Position = 0L;
data.CopyTo((Stream)memoryStream);
WavExtensions.UpdateHeader((Stream)memoryStream);
return(memoryStream);
}
private static void WriteHeader(Stream stream, int sampleRate, int audioChannels = 1, int bitsPerSample = 16)
{
int num = bitsPerSample / 8;
Encoding utF8 = Encoding.UTF8;
long position = stream.Position;
stream.Seek(0, SeekOrigin.Begin);
stream.Write(utF8.GetBytes("RIFF"), 0, 4);
stream.Write(BitConverter.GetBytes(0), 0, 4);
stream.Write(utF8.GetBytes("WAVE"), 0, 4);
stream.Write(utF8.GetBytes("fmt "), 0, 4);
stream.Write(BitConverter.GetBytes(16), 0, 4);
stream.Write(BitConverter.GetBytes(1), 0, 2);
stream.Write(BitConverter.GetBytes((short)audioChannels), 0, 2);
stream.Write(BitConverter.GetBytes(sampleRate), 0, 4);
stream.Write(BitConverter.GetBytes(sampleRate * num * audioChannels), 0, 4);
stream.Write(BitConverter.GetBytes((short)num), 0, 2);
stream.Write(BitConverter.GetBytes((short)bitsPerSample), 0, 2);
stream.Write(utF8.GetBytes("data"), 0, 4);
stream.Write(BitConverter.GetBytes(0), 0, 4);
WavExtensions.UpdateHeader(stream);
stream.Seek(position, SeekOrigin.Begin);
}