public EncodingInfo Read( Stream raf )
{
EncodingInfo info = new EncodingInfo();
//Begin info fetch-------------------------------------------
if ( raf.Length == 0 ) {
//Empty File
throw new CannotReadException("File is empty");
}
raf.Seek( 0 , SeekOrigin.Begin);
//MP+ Header string
byte[] b = new byte[4];
raf.Read(b, 0, b.Length);
string mpc = new string(System.Text.Encoding.ASCII.GetChars(b));
if (mpc != "MAC ") {
throw new CannotReadException("'MAC ' Header not found");
}
b = new byte[4];
raf.Read(b, 0, b.Length);
int version = Utils.GetNumber(b, 0,3);
if(version < 3970)
throw new CannotReadException("Monkey Audio version <= 3.97 is not supported");
b = new byte[44];
raf.Read(b, 0, b.Length);
MonkeyDescriptor md = new MonkeyDescriptor(b);
b = new byte[24];
raf.Read(b, 0, b.Length);
MonkeyHeader mh = new MonkeyHeader(b);
raf.Seek(md.RiffWavOffset, SeekOrigin.Begin);
b = new byte[12];
raf.Read(b, 0, b.Length);
WavRIFFHeader wrh = new WavRIFFHeader(b);
if(!wrh.Valid)
throw new CannotReadException("No valid RIFF Header found");
b = new byte[24];
raf.Read(b, 0, b.Length);
WavFormatHeader wfh = new WavFormatHeader(b);
if(!wfh.Valid)
throw new CannotReadException("No valid WAV Header found");
info.Length = mh.Length;
info.ChannelNumber = wfh.ChannelNumber ;
info.SamplingRate = wfh.SamplingRate ;
info.Bitrate = ComputeBitrate(info.Length, raf.Length) ;
info.EncodingType = "Monkey Audio v" + (((double)version)/1000)+", compression level "+mh.CompressionLevel;
info.ExtraEncodingInfos = "";
return info;
}
public EncodingInfo Read(Stream raf)
{
EncodingInfo info = new EncodingInfo();
//Begin info fetch-------------------------------------------
if (raf.Length == 0)
{
//Empty File
throw new CannotReadException("File is empty");
}
raf.Seek(0, SeekOrigin.Begin);
//MP+ Header string
byte[] b = new byte[4];
raf.Read(b, 0, b.Length);
string mpc = new string(System.Text.Encoding.ASCII.GetChars(b));
if (mpc != "MAC ")
{
throw new CannotReadException("'MAC ' Header not found");
}
b = new byte[4];
raf.Read(b, 0, b.Length);
int version = Utils.GetNumber(b, 0, 3);
if (version < 3970)
{
throw new CannotReadException("Monkey Audio version <= 3.97 is not supported");
}
b = new byte[44];
raf.Read(b, 0, b.Length);
MonkeyDescriptor md = new MonkeyDescriptor(b);
b = new byte[24];
raf.Read(b, 0, b.Length);
MonkeyHeader mh = new MonkeyHeader(b);
raf.Seek(md.RiffWavOffset, SeekOrigin.Begin);
b = new byte[12];
raf.Read(b, 0, b.Length);
WavRIFFHeader wrh = new WavRIFFHeader(b);
if (!wrh.Valid)
{
throw new CannotReadException("No valid RIFF Header found");
}
b = new byte[24];
raf.Read(b, 0, b.Length);
WavFormatHeader wfh = new WavFormatHeader(b);
if (!wfh.Valid)
{
throw new CannotReadException("No valid WAV Header found");
}
info.Duration = new TimeSpan(mh.Length * TimeSpan.TicksPerSecond);
info.ChannelNumber = wfh.ChannelNumber;
info.SamplingRate = wfh.SamplingRate;
info.Bitrate = ComputeBitrate(mh.Length, raf.Length);
info.EncodingType = "Monkey Audio v" + (((double)version) / 1000) + ", compression level " + mh.CompressionLevel;
info.ExtraEncodingInfos = "";
return(info);
}