/// <summary>
/// The UnPackBytes method is used to unpack a byte stream into the Wav information.
/// </summary>
/// <param name="rg">Specifies the byte stream.</param>
/// <param name="fmt">Returns the WAV file format.</param>
/// <returns>Returns the WAV file samples.</returns>
public static List <double[]> UnPackBytes(byte[] rg, out WaveFormat fmt)
{
using (MemoryStream ms = new MemoryStream(rg))
using (BinaryReader br = new BinaryReader(ms))
{
int nLen = br.ReadInt32();
byte[] rgFmt = br.ReadBytes(nLen);
fmt = WAVWriter.ByteArrayToStructure <WaveFormat>(rgFmt);
int nCh = br.ReadInt32();
int nS = br.ReadInt32();
List <double[]> rgData = new List <double[]>();
for (int i = 0; i < nCh; i++)
{
rgData.Add(new double[nS]);
}
for (int i = 0; i < nS; i++)
{
for (int j = 0; j < nCh; j++)
{
float fVal = br.ReadSingle();
rgData[j][i] = fVal;
}
}
return(rgData);
}
}
/// <summary>
/// The PackBytes method packs the wav file information into a byte stream.
/// </summary>
/// <param name="fmt">Specifies the wav file format.</param>
/// <param name="rgSamples">Specifies the wav file samples.</param>
/// <returns>The byte stream is returned.</returns>
public static byte[] PackBytes(WaveFormat fmt, List <float[]> rgSamples)
{
using (MemoryStream ms = new MemoryStream())
using (BinaryWriter bw = new BinaryWriter(ms))
{
byte[] rgHeader = WAVWriter.StructureToByteArray <WaveFormat>(fmt);
List <float[]> rgData = rgSamples;
bw.Write(rgHeader.Length);
bw.Write(rgHeader);
bw.Write(rgData.Count);
bw.Write(rgData[0].Length);
for (int i = 0; i < rgData[0].Length; i++)
{
for (int j = 0; j < rgData.Count; j++)
{
bw.Write(rgData[j][i]);
}
}
return(ms.ToArray());
}
}
