| /******************************************************************************* |
| * Copyright (c) 2007 IBM Corporation and Others |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Daisuke SATO - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.actf.ai.audio.io; |
| |
| import java.nio.ByteOrder; |
| |
| import javax.sound.sampled.AudioFormat; |
| |
| /** |
| * This utility provides some methods to manage AudioFormat in form of human |
| * readable. |
| */ |
| public class AudioUtil { |
| |
| /** |
| * @param format |
| * the instance of AudioFormat to be used. |
| * @return the total number of bytes per second in all channels. |
| */ |
| public static int getBytesPerSecondLR(AudioFormat format) { |
| return (int) getBytesPerSecond(format) * format.getChannels(); |
| } |
| |
| /** |
| * @param format |
| * the instance of AudioFormat to be used. |
| * @return the number of bytes per second in one channel. |
| */ |
| public static int getBytesPerSecond(AudioFormat format) { |
| return (int) getBitsPerSecond(format) / 8; |
| } |
| |
| /** |
| * @param format |
| * the instance of AudioFormat to be used. |
| * @return the number of bits per second in one channel. |
| */ |
| public static int getBitsPerSecond(AudioFormat format) { |
| return (int) format.getSampleRate() * format.getSampleSizeInBits(); |
| } |
| |
| /** |
| * @param format |
| * the instance of AudioFormat to be used. |
| * @return the number of samples per second in one channel. |
| */ |
| public static int getSamplesPerSecond(AudioFormat format) { |
| return (int) format.getSampleRate(); |
| } |
| |
| /** |
| * @param format |
| * the instance of AudioFormat to be used. |
| * @return the total number of samples per second in all channels. |
| */ |
| public static int getSamplesPerSecondLR(AudioFormat format) { |
| return (int) getSamplesPerSecond(format) * format.getChannels(); |
| } |
| |
| /** |
| * @param format |
| * the instance of AudioFormat to be used. |
| * @return the number of bytes per sample in one channel. |
| */ |
| public static int getBytesPerSample(AudioFormat format) { |
| return format.getSampleSizeInBits() / 8; |
| } |
| |
| /** |
| * @param format |
| * the instance of AudioFormat to be used. |
| * @return the total number of bytes per sample in all channels. |
| */ |
| public static int getBytesPerSampleLR(AudioFormat format) { |
| return getBytesPerSample(format) * format.getChannels(); |
| } |
| |
| /** |
| * @param format |
| * the instance of AudioFormat to be used. |
| * @return the ByteOrder of the format. |
| */ |
| public static ByteOrder getEndian(AudioFormat format) { |
| if (format.isBigEndian()) |
| return ByteOrder.BIG_ENDIAN; |
| else |
| return ByteOrder.LITTLE_ENDIAN; |
| } |
| |
| } |