From 9fee0ec4ca0c5b7a334cc29dbb58e76c7a4c736e Mon Sep 17 00:00:00 2001 From: Michiel Van Der Kolk Date: Mon, 11 Jul 2005 15:42:37 +0000 Subject: Songdb java version, source. only 1.5 compatible git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7101 a1c6a512-1295-4272-9138-f99709370657 --- songdbj/org/tritonus/file/WaveTool.java | 115 ++++++++++++++++++++++++++++++++ 1 file changed, 115 insertions(+) create mode 100644 songdbj/org/tritonus/file/WaveTool.java (limited to 'songdbj/org/tritonus/file/WaveTool.java') diff --git a/songdbj/org/tritonus/file/WaveTool.java b/songdbj/org/tritonus/file/WaveTool.java new file mode 100644 index 0000000000..3487557088 --- /dev/null +++ b/songdbj/org/tritonus/file/WaveTool.java @@ -0,0 +1,115 @@ +/* + * WaveTool.java + * + * This file is part of Tritonus: http://www.tritonus.org/ + */ + +/* + * Copyright (c) 2000 by Florian Bomers + * + * + * 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.sampled.file; + +import javax.sound.sampled.AudioSystem; +import javax.sound.sampled.AudioFormat; +import javax.sound.sampled.AudioFileFormat; + + +/** + * Common constants and methods for handling wave files. + * + * @author Florian Bomers + */ + +public class WaveTool { + + public static final int WAVE_RIFF_MAGIC = 0x52494646; // "RIFF" + public static final int WAVE_WAVE_MAGIC = 0x57415645; // "WAVE" + public static final int WAVE_FMT_MAGIC = 0x666D7420; // "fmt " + public static final int WAVE_DATA_MAGIC = 0x64617461; // "DATA" + public static final int WAVE_FACT_MAGIC = 0x66616374; // "fact" + + public static final short WAVE_FORMAT_UNSPECIFIED = 0; + public static final short WAVE_FORMAT_PCM = 1; + public static final short WAVE_FORMAT_MS_ADPCM = 2; + public static final short WAVE_FORMAT_ALAW = 6; + public static final short WAVE_FORMAT_ULAW = 7; + public static final short WAVE_FORMAT_IMA_ADPCM = 17; // same as DVI_ADPCM + public static final short WAVE_FORMAT_G723_ADPCM = 20; + public static final short WAVE_FORMAT_GSM610 = 49; + public static final short WAVE_FORMAT_G721_ADPCM = 64; + public static final short WAVE_FORMAT_MPEG = 80; + + public static final int MIN_FMT_CHUNK_LENGTH=14; + public static final int MIN_DATA_OFFSET=12+8+MIN_FMT_CHUNK_LENGTH+8; + public static final int MIN_FACT_CHUNK_LENGTH = 4; + + // we always write the sample size in bits and the length of extra bytes. + // There are programs (CoolEdit) that rely on the + // additional entry for sample size in bits. + public static final int FMT_CHUNK_SIZE=18; + public static final int RIFF_CONTAINER_CHUNK_SIZE=12; + public static final int CHUNK_HEADER_SIZE=8; + public static final int DATA_OFFSET=RIFF_CONTAINER_CHUNK_SIZE + +CHUNK_HEADER_SIZE+FMT_CHUNK_SIZE+CHUNK_HEADER_SIZE; + + public static AudioFormat.Encoding GSM0610 = new AudioFormat.Encoding("GSM0610"); + public static AudioFormat.Encoding IMA_ADPCM = new AudioFormat.Encoding("IMA_ADPCM"); + + public static short getFormatCode(AudioFormat format) { + AudioFormat.Encoding encoding = format.getEncoding(); + int nSampleSize = format.getSampleSizeInBits(); + boolean littleEndian = !format.isBigEndian(); + boolean frameSizeOK=format.getFrameSize()==AudioSystem.NOT_SPECIFIED + || format.getChannels()!=AudioSystem.NOT_SPECIFIED + || format.getFrameSize()==nSampleSize/8*format.getChannels(); + + if (nSampleSize==8 && frameSizeOK + && (encoding.equals(AudioFormat.Encoding.PCM_SIGNED) + || encoding.equals(AudioFormat.Encoding.PCM_UNSIGNED))) { + return WAVE_FORMAT_PCM; + } else if (nSampleSize>8 && frameSizeOK && littleEndian + && encoding.equals(AudioFormat.Encoding.PCM_SIGNED)) { + return WAVE_FORMAT_PCM; + } else if (encoding.equals(AudioFormat.Encoding.ULAW) + && (nSampleSize==AudioSystem.NOT_SPECIFIED || nSampleSize == 8) + && frameSizeOK) { + return WAVE_FORMAT_ULAW; + } else if (encoding.equals(AudioFormat.Encoding.ALAW) + && (nSampleSize==AudioSystem.NOT_SPECIFIED || nSampleSize == 8) + && frameSizeOK) { + return WAVE_FORMAT_ALAW; + } else if (encoding.equals(new AudioFormat.Encoding("IMA_ADPCM")) + && nSampleSize == 4) + { + return WAVE_FORMAT_IMA_ADPCM; + } + else if (encoding.equals(GSM0610)) { + return WAVE_FORMAT_GSM610; + } + return WAVE_FORMAT_UNSPECIFIED; + } + +} + +/*** WaveTool.java ***/ -- cgit v1.2.3