/*

  * Entagged Audio Tag library

  * Copyright (c) 2003-2005 Rapha�l Slinckx <raphael@slinckx.net>

  * 

  * This library is free software; you can redistribute it and/or

  * modify it under the terms of the GNU Lesser General Public

  * License as published by the Free Software Foundation; either

  * version 2.1 of the License, or (at your option) any later version.

  *  

  * This library is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  * Lesser General Public License for more details.

  * 

  * You should have received a copy of the GNU Lesser General Public

  * License along with this library; if not, write to the Free Software

  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

  */

 package org.jaudiotagger.audio.wav.util;

 public class WavFormatHeader

 {

     private boolean isValid = false;

     private int channels, sampleRate, bytesPerSecond, bitrate;

     public WavFormatHeader(byte[] b)

     {

         String fmt = new String(b, 0, 3);

         //System.err.println(fmt);

         if (fmt.equals("fmt") && b[8] == 1)

         {

             channels = b[10];

             //System.err.println(channels);

             sampleRate = u(b[15]) * 16777216 + u(b[14]) * 65536 + u(b[13]) * 256 + u(b[12]);

             //System.err.println(sampleRate);

             bytesPerSecond = u(b[19]) * 16777216 + u(b[18]) * 65536 + u(b[17]) * 256 + u(b[16]);

             //System.err.println(bytesPerSecond);

             bitrate = u(b[22]);

             isValid = true;

         }

     }

     public boolean isValid()

     {

         return isValid;

     }

     public int getChannelNumber()

     {

         return channels;

     }

     public int getSamplingRate()

     {

         return sampleRate;

     }

     public int getBytesPerSecond()

     {

         return bytesPerSecond;

     }

     public int getBitrate()

     {

         return bitrate;

     }

     private int u(int n)

     {

         return n & 0xff;

     }

     public String toString()

     {

         String out = "RIFF-WAVE Header:\n";

         out += "Is valid?: " + isValid;

         return out;

     }

 }