From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- .../gnu/javax/sound/sampled/AU/AUReader.java | 210 +++++++++++++++++++++ 1 file changed, 210 insertions(+) create mode 100644 libjava/classpath/gnu/javax/sound/sampled/AU/AUReader.java (limited to 'libjava/classpath/gnu/javax/sound/sampled/AU') diff --git a/libjava/classpath/gnu/javax/sound/sampled/AU/AUReader.java b/libjava/classpath/gnu/javax/sound/sampled/AU/AUReader.java new file mode 100644 index 000000000..fe0df6eb1 --- /dev/null +++ b/libjava/classpath/gnu/javax/sound/sampled/AU/AUReader.java @@ -0,0 +1,210 @@ +/* AUReader.java -- Read AU files. + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package gnu.javax.sound.sampled.AU; + +import javax.sound.sampled.AudioFormat; +import javax.sound.sampled.AudioSystem; +import javax.sound.sampled.AudioFileFormat; +import javax.sound.sampled.AudioInputStream; +import javax.sound.sampled.UnsupportedAudioFileException; +import javax.sound.sampled.spi.AudioFileReader; +import java.io.File; +import java.io.IOException; +import java.io.BufferedInputStream; +import java.io.InputStream; +import java.io.FileInputStream; +import java.net.URL; +import java.nio.ByteBuffer; + +public class AUReader extends AudioFileReader +{ + private static class AUHeader + { + // Magic number identifying the file. '.snd' + private static final int MAGIC = 0x2e736e64; + + public static final int SIZE = 24; // size of the header + + // Encoding types + public static final int ULAW = 1; // 8-bit u-law + public static final int PCM8 = 2; // 8-bit PCM + public static final int PCM16 = 3; // 16-bit PCM + public static final int PCM24 = 4; // 24-bit PCM + public static final int PCM32 = 5; // 32-bit PCM + public static final int IEEE32 = 6; // 32-bit IEEE f.p. + public static final int IEEE64 = 7; // 64-bit IEEE f.p. + public static final int G721 = 23; + public static final int G722 = 24; + public static final int G723 = 25; + public static final int G723_5BIT = 26; + public static final int ALAW = 27; // 8-bit a-law + + // Header data. + public int headerSize; + public int fileSize; // this value may not be set. + public int encoding; + public int sampleRate; + public int channels; + public int sampleSizeInBits; + + public AUHeader(InputStream stream) + throws IOException, UnsupportedAudioFileException + { + byte[] hdr = new byte[24]; + stream.read( hdr ); + ByteBuffer buf = ByteBuffer.wrap(hdr); + + if( buf.getInt() != MAGIC ) + throw new UnsupportedAudioFileException("Not an AU format audio file."); + headerSize = buf.getInt(); + fileSize = buf.getInt(); + encoding = buf.getInt(); + sampleRate = buf.getInt(); + channels = buf.getInt(); + + switch(encoding) + { + case ULAW: + case PCM8: + case ALAW: + sampleSizeInBits = 8; + break; + case PCM16: + sampleSizeInBits = 16; + break; + case PCM24: + sampleSizeInBits = 24; + break; + case PCM32: + sampleSizeInBits = 32; + break; + default: // other types exist but are not supported. Yet. + throw new UnsupportedAudioFileException("Unsupported encoding."); + } + } + + public AudioFormat getAudioFormat() + { + AudioFormat.Encoding encType = AudioFormat.Encoding.PCM_SIGNED; + if(encoding == 1) + encType = AudioFormat.Encoding.ULAW; + if(encoding == 27) + encType = AudioFormat.Encoding.ALAW; + + return new AudioFormat(encType, + (float)sampleRate, + sampleSizeInBits, + channels, + (sampleSizeInBits >> 3) * channels, + (float)sampleRate, + true); + } + + public AudioFileFormat getAudioFileFormat() + { + return new AudioFileFormat(new AUFormatType(), + getAudioFormat(), + AudioSystem.NOT_SPECIFIED); + } + } + + public static class AUFormatType extends AudioFileFormat.Type + { + public AUFormatType() + { + super("AU", ".au"); + } + } + + public AudioFileFormat getAudioFileFormat(File file) + throws IOException, UnsupportedAudioFileException + { + return getAudioFileFormat(new FileInputStream(file)); + } + + public AudioFileFormat getAudioFileFormat(InputStream stream) + throws IOException, UnsupportedAudioFileException + { + if(!stream.markSupported()) + throw new IOException("Stream must support marking."); + + stream.mark(25); + AUHeader header = new AUHeader(stream); + stream.reset(); + + return header.getAudioFileFormat(); + } + + public AudioFileFormat getAudioFileFormat(URL url) + throws IOException, UnsupportedAudioFileException + { + return getAudioFileFormat(new BufferedInputStream(url.openStream())); + } + + public AudioInputStream getAudioInputStream(File file) + throws IOException, UnsupportedAudioFileException + { + InputStream stream = new FileInputStream(file); + long length = file.length(); + + AUHeader header = new AUHeader( stream ); + if( header.headerSize > AUHeader.SIZE ) + stream.skip(header.headerSize - AUHeader.SIZE); + + length -= header.headerSize; + + return new AudioInputStream(stream, header.getAudioFormat(), length); + } + + public AudioInputStream getAudioInputStream(InputStream stream) + throws IOException, UnsupportedAudioFileException + { + AUHeader header = new AUHeader( stream ); + if( header.headerSize > AUHeader.SIZE ) + stream.skip(header.headerSize - AUHeader.SIZE); + + return new AudioInputStream(stream, header.getAudioFormat(), + AudioSystem.NOT_SPECIFIED); + } + + public AudioInputStream getAudioInputStream(URL url) + throws IOException, UnsupportedAudioFileException + { + return getAudioInputStream(new BufferedInputStream(url.openStream())); + } +} -- cgit v1.2.3