/* * AudioUtils.java * * This file is part of Tritonus: http://www.tritonus.org/ */ /* * Copyright (c) 2000 by Matthias Pfisterer * * 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. * */ /* |<--- this code is formatted to fit into 80 columns --->| */ package org.tritonus.share.sampled; import java.io.File; import java.io.FileOutputStream; import java.io.InputStream; import java.io.IOException; import java.io.OutputStream; import java.util.Collection; import java.util.Iterator; import javax.sound.sampled.AudioSystem; import javax.sound.sampled.AudioFormat; import javax.sound.sampled.AudioFileFormat; import javax.sound.sampled.AudioInputStream; import javax.sound.sampled.spi.AudioFileWriter; import org.tritonus.share.TDebug; import org.tritonus.share.sampled.TConversionTool; public class AudioUtils { public static long getLengthInBytes(AudioInputStream audioInputStream) { return getLengthInBytes(audioInputStream.getFormat(), audioInputStream.getFrameLength()); /* long lLengthInFrames = audioInputStream.getFrameLength(); int nFrameSize = audioInputStream.getFormat().getFrameSize(); if (lLengthInFrames >= 0 && nFrameSize >= 1) { return lLengthInFrames * nFrameSize; } else { return AudioSystem.NOT_SPECIFIED; } */ } /** * if the passed value for lLength is * AudioSystem.NOT_SPECIFIED (unknown * length), the length in bytes becomes * AudioSystem.NOT_SPECIFIED, too. */ public static long getLengthInBytes(AudioFormat audioFormat, long lLengthInFrames) { int nFrameSize = audioFormat.getFrameSize(); if (lLengthInFrames >= 0 && nFrameSize >= 1) { return lLengthInFrames * nFrameSize; } else { return AudioSystem.NOT_SPECIFIED; } } public static boolean containsFormat(AudioFormat sourceFormat, Iterator possibleFormats) { while (possibleFormats.hasNext()) { AudioFormat format = (AudioFormat) possibleFormats.next(); if (AudioFormats.matches(format, sourceFormat)) { return true; } } return false; } /** * Conversion milliseconds -> bytes */ public static long millis2Bytes(long ms, AudioFormat format) { return millis2Bytes(ms, format.getFrameRate(), format.getFrameSize()); } public static long millis2Bytes(long ms, float frameRate, int frameSize) { return (long) (ms*frameRate/1000*frameSize); } /** * Conversion milliseconds -> bytes (bytes will be frame-aligned) */ public static long millis2BytesFrameAligned(long ms, AudioFormat format) { return millis2BytesFrameAligned(ms, format.getFrameRate(), format.getFrameSize()); } public static long millis2BytesFrameAligned(long ms, float frameRate, int frameSize) { return ((long) (ms*frameRate/1000))*frameSize; } /** * Conversion milliseconds -> frames */ public static long millis2Frames(long ms, AudioFormat format) { return millis2Frames(ms, format.getFrameRate()); } public static long millis2Frames(long ms, float frameRate) { return (long) (ms*frameRate/1000); } /** * Conversion bytes -> milliseconds */ public static long bytes2Millis(long bytes, AudioFormat format) { return (long) (bytes/format.getFrameRate()*1000/format.getFrameSize()); } /** * Conversion frames -> milliseconds */ public static long frames2Millis(long frames, AudioFormat format) { return (long) (frames/format.getFrameRate()*1000); } //$$fb 2000-07-18: added these debugging functions public static String NS_or_number(int number) { return (number==AudioSystem.NOT_SPECIFIED)?"NOT_SPECIFIED":String.valueOf(number); } public static String NS_or_number(float number) { return (number==AudioSystem.NOT_SPECIFIED)?"NOT_SPECIFIED":String.valueOf(number); } /** * For debugging purposes. */ public static String format2ShortStr(AudioFormat format) { return format.getEncoding() + "-" + NS_or_number(format.getChannels()) + "ch-" + NS_or_number(format.getSampleSizeInBits()) + "bit-" + NS_or_number(((int)format.getSampleRate())) + "Hz-"+ (format.isBigEndian() ? "be" : "le"); } } /*** AudioUtils.java ***/