SkipTest.java

/*
 *	SkipTest.java
 */

/*
 *  Copyright (c) 1999, 2000 by Matthias Pfisterer <Matthias.Pfisterer@gmx.de>
 *
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Library General Public License as published
 *   by the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program 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 Library General Public License for more details.
 *
 *   You should have received a copy of the GNU Library General Public
 *   License along with this program; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */


import	java.io.InputStream;
import	java.io.IOException;
import	java.io.FileNotFoundException;
import	java.io.File;

import	java.net.URL;

import	javax.sound.sampled.AudioFileFormat;
import	javax.sound.sampled.AudioFormat;
import	javax.sound.sampled.AudioInputStream;
import	javax.sound.sampled.AudioSystem;


public class SkipTest
{
	private static final int	LOAD_METHOD_STREAM = 1;
	private static final int	LOAD_METHOD_FILE = 2;
	private static final int	LOAD_METHOD_URL = 3;



	public static void main(String[] args)
	{
		if (args.length == 0)
		{
			printUsageAndExit();
		}
		int	nLoadMethod = LOAD_METHOD_FILE;
		boolean	bCheckAudioInputStream = false;
		int	nCurrentArg = 0;
		while (nCurrentArg < args.length)
		{
			if (args[nCurrentArg].equals("-h"))
			{
				printUsageAndExit();
			}
/*
			else if (args[nCurrentArg].equals("-s"))
			{
				nLoadMethod = LOAD_METHOD_STREAM;
			}
			else if (args[nCurrentArg].equals("-f"))
			{
				nLoadMethod = LOAD_METHOD_FILE;
			}
			else if (args[nCurrentArg].equals("-u"))
			{
				nLoadMethod = LOAD_METHOD_URL;
			}
			else if (args[nCurrentArg].equals("-i"))
			{
				bCheckAudioInputStream = true;
			}
*/

			nCurrentArg++;
		}
		bCheckAudioInputStream = true;
		String	strSource = args[nCurrentArg - 2];
		long	lSkip = Long.parseLong(args[nCurrentArg - 1]);
		String	strFilename = null;
		AudioFileFormat	aff = null;
		AudioInputStream ais = null;
		try
		{
			switch (nLoadMethod)
			{
			case LOAD_METHOD_STREAM:
				InputStream	inputStream = System.in;
				aff = AudioSystem.getAudioFileFormat(inputStream);
				strFilename = "<standard input>";
				if (bCheckAudioInputStream)
				{
					ais = AudioSystem.getAudioInputStream(inputStream);
				}
				break;

			case LOAD_METHOD_FILE:
				File	file = new File(strSource);
				aff = AudioSystem.getAudioFileFormat(file);
				strFilename = file.getCanonicalPath();
				if (bCheckAudioInputStream)
				{
					ais = AudioSystem.getAudioInputStream(file);
				}
				break;

			case LOAD_METHOD_URL:
				URL	url = new URL(strSource);
				aff = AudioSystem.getAudioFileFormat(url);
				strFilename = url.toString();
				if (bCheckAudioInputStream)
				{
					ais = AudioSystem.getAudioInputStream(url);
				}
				break;
			}
		}
		catch (Exception e)
		{
			e.printStackTrace();
			System.exit(1);
		}
		if (aff == null)
		{
			System.out.println("Cannot determine format");
		}
		else
		{
/*
			AudioFormat format = aff.getFormat();
			System.out.println("---------------------------------------------------------------------------");
			System.out.println("Source: " + strFilename);
			System.out.println("Type: " + aff.getType());
			System.out.println("AudioFormat: " + format);
			System.out.println("---------------------------------------------------------------------------");
			String	strAudioLength = null;
			if (aff.getFrameLength() != AudioSystem.NOT_SPECIFIED)
			{
				strAudioLength = "" + aff.getFrameLength() + " frames (= " + aff.getFrameLength() * format.getFrameSize() + " bytes)";
			}
			else
			{
				strAudioLength = "unknown";
			}
			System.out.println("Length of audio data: " + strAudioLength);
			String	strFileLength = null;
			if (aff.getByteLength() != AudioSystem.NOT_SPECIFIED)
			{
				strFileLength = "" + aff.getByteLength() + " bytes)";
			}
			else
			{
				strFileLength = "unknown";
			}
			System.out.println("Total length of file (including headers): " + strFileLength);
*/
			if (bCheckAudioInputStream)
			{
				// System.out.println("[AudioInputStream says:] Length of audio data: " + ais.getFrameLength() + " frames (= " + ais.getFrameLength() * ais.getFormat().getFrameSize() + " bytes)");
				System.out.println("frame length: " + ais.getFrameLength());
				System.out.println("frame size: " + ais.getFormat().getFrameSize());
				System.out.println("AIS class:" + ais);
				System.out.println("now skipping...");
				long	lSkipped = 0;
				try
				{
					lSkipped = ais.skip(lSkip);
				}
				catch (IOException e)
				{
					e.printStackTrace();
				}
				System.out.println("skipped: " + lSkipped);
			}
			System.out.println("---------------------------------------------------------------------------");
		}
	}


	private static void printUsageAndExit()
	{
		System.out.println("SkipTest: usage:");
		System.out.println("\tjava SkipTest <audiofile> <skip>");
		System.exit(1);
	}


}



/*** SkipTest.java ***/