/*
public struct WaveInCaps
{
public short wMid;
public short wPid;
public int vDriverVersion;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = WinMM.MAXPNAMELEN)] public string szPname;
public int dwFormats;
public short wChannels;
}*/
#endregion
public static byte[] WriteWAVFile(WaveFormat wf, byte[][] rawData)
{
var bw = new MemoryStream();
var rawSize = 0;
for (var j = 0; j < rawData.Length; j++)
rawSize += rawData[j].Length;
//RIFF HEADER
bw.Write(Encoding.ASCII.GetBytes("RIFF"), 0, 4);
bw.Write(BitConverter.GetBytes(rawSize + 36), 0, 4);
bw.Write(Encoding.ASCII.GetBytes("WAVE".ToCharArray()), 0, 4);
// SUBCHUNK
bw.Write(Encoding.ASCII.GetBytes("fmt ".ToCharArray()), 0, 4);
bw.Write(BitConverter.GetBytes(16), 0, 4);
var chunk = MarshalUtil.StructureToByteArray(wf);
bw.Write(chunk, 0, chunk.Length);
// DATA CHUNK
bw.Write(Encoding.ASCII.GetBytes("data".ToCharArray()), 0, 4);
bw.Write(BitConverter.GetBytes(rawSize), 0, 4);
for (var i = 0; i < rawData[0].Length; i += wf.BitsPerSample / 8 )
{
for (var j = 0; j < rawData.Length; j++ )
{
bw.WriteByte(rawData[j][i]);
if (wf.BitsPerSample == 16)
bw.WriteByte(rawData[j][i+1]);
}
}
return bw.ToArray();
}
public static void WriteWAVFile(string filePath, WaveFormat wf, byte[][] rawData)
{
var fileStream = File.OpenWrite(filePath);
var rawSize = 0;
for (var j = 0; j < rawData.Length; j++)
rawSize += rawData[j].Length;
//RIFF HEADER
fileStream.Write(Encoding.ASCII.GetBytes("RIFF"), 0, 4);
fileStream.Write(BitConverter.GetBytes(rawSize + 36), 0, 4);
fileStream.Write(Encoding.ASCII.GetBytes("WAVE".ToCharArray()), 0, 4);
// SUBCHUNK
fileStream.Write(Encoding.ASCII.GetBytes("fmt ".ToCharArray()), 0, 4);
fileStream.Write(BitConverter.GetBytes(16), 0, 4);
var chunk = MarshalUtil.StructureToByteArray(wf);
fileStream.Write(chunk, 0, chunk.Length);
// DATA CHUNK
fileStream.Write(Encoding.ASCII.GetBytes("data".ToCharArray()), 0, 4);
fileStream.Write(BitConverter.GetBytes(rawSize), 0, 4);
for (var i = 0; i < rawData[0].Length; i += wf.BitsPerSample / 8)
{
for (var j = 0; j < rawData.Length; j++)
{
fileStream.WriteByte(rawData[j][i]);
if (wf.BitsPerSample == 16)
fileStream.WriteByte(rawData[j][i + 1]);
}
}
fileStream.Close();
}
