public PFMInputStream(InputStream in) 
{
        super(in);
        datain = new DataInputStream(in);
}

Constructs a PFMInputStream based on an InputStream representing the PFM file.

Parameters:

in - The stream from which to read the PFM file

 public short readByte() throws IOException 
{
        short s = datain.readByte();
        // Now, we've got to trick Java into forgetting the sign
        int s1 = (((s & 0xF0)  > > > 4) < <  4) + (s & 0x0F);
        return (short)s1;
}

Parses a one byte value out of the stream.

 public long readInt() throws IOException 
{
        int i = datain.readInt();
        // Change byte order
        int i1 = (i & 0xFF000000)  > > > 24;
        int i2 = (i & 0x00FF0000)  > > > 8;
        int i3 = (i & 0x0000FF00) < <  8;
        int i4 = (i & 0x000000FF) < <  24;
        return i1 + i2 + i3 + i4;
}

Parses a four byte value out of the stream.

 public int readShort() throws IOException 
{
        int i = datain.readShort();
        // Change byte order
        int high = (i & 0xFF00)  > > > 8;
        int low = (i & 0x00FF) < <  8;
        return low + high;
}

Parses a two byte value out of the stream.

 public String readString() throws IOException 
{
        InputStreamReader reader = new InputStreamReader(in, "ISO-8859-1");
        StringBuffer buf = new StringBuffer();
        int ch = reader.read();
        while (ch != 0) {
            buf.append((char)ch);
            ch = reader.read();
        }
        return buf.toString();
}

Parses a zero-terminated string out of the stream.