private static IEnumerable<byte> MakeWaveHeader(WaveProcessor Wave)
{
MemoryStream fs = new MemoryStream();
BinaryWriter bw = new BinaryWriter(fs);
fs.Position = 0;
bw.Write(new[] { 'R', 'I', 'F', 'F' });
bw.Write(Wave.Length);
bw.Write(new[] { 'W', 'A', 'V', 'E', 'f', 'm', 't', ' ' });
bw.Write(16);
bw.Write((short)1);
bw.Write(Wave.Channels);
bw.Write(Wave.SampleRate);
bw.Write((Wave.SampleRate * ((Wave.BitsPerSample * Wave.Channels) / 8)));
bw.Write((short)((Wave.BitsPerSample * Wave.Channels) / 8));
bw.Write(Wave.BitsPerSample);
bw.Write(new[] { 'd', 'a', 't', 'a' });
bw.Write(Wave.DataLength);
bw.Close();
Byte[] Result = fs.ToArray();
fs.Close();
return Result;
}
//public ushort MaxAudioLevel;
private static WaveProcessor WaveHeaderIN(char Digit)
{
String Path = HttpContext.Current.Server.MapPath(String.Format("~/Epayment/DigitVoice/{0}.WAV", Digit));
FileStream fs = new FileStream(Path, FileMode.Open, FileAccess.Read);
BinaryReader br = new BinaryReader(fs);
try
{
WaveProcessor Header = new WaveProcessor {Length = (int) fs.Length - 8};
fs.Position = 22;
Header.Channels = br.ReadInt16(); //1
fs.Position = 24;
Header.SampleRate = br.ReadInt32(); //8000
fs.Position = 34;
Header.BitsPerSample = br.ReadInt16(); //16
Header.DataLength = (int)fs.Length - 44;
byte[] arrfile = new byte[fs.Length - 44];
fs.Position = 44;
fs.Read(arrfile, 0, arrfile.Length);
return Header;
}
finally
{
br.Close();
fs.Close();
}
}
