340 lines
12 KiB
Java
340 lines
12 KiB
Java
/*
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* Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.media.sound;
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import java.io.BufferedInputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.URL;
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import java.util.HashMap;
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import java.util.Map;
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import javax.sound.sampled.AudioFileFormat;
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import javax.sound.sampled.AudioFormat;
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import javax.sound.sampled.AudioInputStream;
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import javax.sound.sampled.AudioSystem;
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import javax.sound.sampled.UnsupportedAudioFileException;
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import javax.sound.sampled.AudioFormat.Encoding;
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import javax.sound.sampled.spi.AudioFileReader;
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/**
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* WAVE file reader for files using format WAVE_FORMAT_EXTENSIBLE (0xFFFE).
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*
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* @author Karl Helgason
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*/
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public final class WaveExtensibleFileReader extends AudioFileReader {
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static private class GUID {
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long i1;
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int s1;
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int s2;
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int x1;
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int x2;
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int x3;
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int x4;
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int x5;
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int x6;
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int x7;
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int x8;
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private GUID() {
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}
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GUID(long i1, int s1, int s2, int x1, int x2, int x3, int x4,
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int x5, int x6, int x7, int x8) {
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this.i1 = i1;
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this.s1 = s1;
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this.s2 = s2;
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this.x1 = x1;
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this.x2 = x2;
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this.x3 = x3;
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this.x4 = x4;
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this.x5 = x5;
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this.x6 = x6;
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this.x7 = x7;
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this.x8 = x8;
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}
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public static GUID read(RIFFReader riff) throws IOException {
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GUID d = new GUID();
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d.i1 = riff.readUnsignedInt();
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d.s1 = riff.readUnsignedShort();
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d.s2 = riff.readUnsignedShort();
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d.x1 = riff.readUnsignedByte();
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d.x2 = riff.readUnsignedByte();
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d.x3 = riff.readUnsignedByte();
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d.x4 = riff.readUnsignedByte();
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d.x5 = riff.readUnsignedByte();
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d.x6 = riff.readUnsignedByte();
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d.x7 = riff.readUnsignedByte();
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d.x8 = riff.readUnsignedByte();
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return d;
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}
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public int hashCode() {
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return (int) i1;
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}
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public boolean equals(Object obj) {
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if (!(obj instanceof GUID))
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return false;
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GUID t = (GUID) obj;
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if (i1 != t.i1)
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return false;
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if (s1 != t.s1)
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return false;
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if (s2 != t.s2)
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return false;
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if (x1 != t.x1)
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return false;
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if (x2 != t.x2)
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return false;
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if (x3 != t.x3)
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return false;
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if (x4 != t.x4)
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return false;
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if (x5 != t.x5)
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return false;
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if (x6 != t.x6)
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return false;
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if (x7 != t.x7)
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return false;
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if (x8 != t.x8)
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return false;
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return true;
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}
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}
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private static final String[] channelnames = { "FL", "FR", "FC", "LF",
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"BL",
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"BR", // 5.1
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"FLC", "FLR", "BC", "SL", "SR", "TC", "TFL", "TFC", "TFR", "TBL",
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"TBC", "TBR" };
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private static final String[] allchannelnames = { "w1", "w2", "w3", "w4", "w5",
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"w6", "w7", "w8", "w9", "w10", "w11", "w12", "w13", "w14", "w15",
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"w16", "w17", "w18", "w19", "w20", "w21", "w22", "w23", "w24",
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"w25", "w26", "w27", "w28", "w29", "w30", "w31", "w32", "w33",
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"w34", "w35", "w36", "w37", "w38", "w39", "w40", "w41", "w42",
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"w43", "w44", "w45", "w46", "w47", "w48", "w49", "w50", "w51",
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"w52", "w53", "w54", "w55", "w56", "w57", "w58", "w59", "w60",
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"w61", "w62", "w63", "w64" };
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private static final GUID SUBTYPE_PCM = new GUID(0x00000001, 0x0000, 0x0010,
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0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
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private static final GUID SUBTYPE_IEEE_FLOAT = new GUID(0x00000003, 0x0000,
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0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
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private String decodeChannelMask(long channelmask) {
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StringBuffer sb = new StringBuffer();
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long m = 1;
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for (int i = 0; i < allchannelnames.length; i++) {
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if ((channelmask & m) != 0L) {
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if (i < channelnames.length) {
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sb.append(channelnames[i] + " ");
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} else {
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sb.append(allchannelnames[i] + " ");
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}
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}
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m *= 2L;
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}
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if (sb.length() == 0)
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return null;
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return sb.substring(0, sb.length() - 1);
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}
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public AudioFileFormat getAudioFileFormat(InputStream stream)
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throws UnsupportedAudioFileException, IOException {
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stream.mark(200);
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AudioFileFormat format;
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try {
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format = internal_getAudioFileFormat(stream);
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} finally {
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stream.reset();
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}
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return format;
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}
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private AudioFileFormat internal_getAudioFileFormat(InputStream stream)
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throws UnsupportedAudioFileException, IOException {
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RIFFReader riffiterator = new RIFFReader(stream);
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if (!riffiterator.getFormat().equals("RIFF"))
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throw new UnsupportedAudioFileException();
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if (!riffiterator.getType().equals("WAVE"))
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throw new UnsupportedAudioFileException();
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boolean fmt_found = false;
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boolean data_found = false;
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int channels = 1;
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long samplerate = 1;
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// long framerate = 1;
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int framesize = 1;
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int bits = 1;
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int validBitsPerSample = 1;
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long channelMask = 0;
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GUID subFormat = null;
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while (riffiterator.hasNextChunk()) {
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RIFFReader chunk = riffiterator.nextChunk();
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if (chunk.getFormat().equals("fmt ")) {
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fmt_found = true;
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int format = chunk.readUnsignedShort();
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if (format != 0xFFFE)
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throw new UnsupportedAudioFileException(); // WAVE_FORMAT_EXTENSIBLE
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// only
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channels = chunk.readUnsignedShort();
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samplerate = chunk.readUnsignedInt();
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/* framerate = */chunk.readUnsignedInt();
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framesize = chunk.readUnsignedShort();
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bits = chunk.readUnsignedShort();
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int cbSize = chunk.readUnsignedShort();
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if (cbSize != 22)
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throw new UnsupportedAudioFileException();
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validBitsPerSample = chunk.readUnsignedShort();
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if (validBitsPerSample > bits)
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throw new UnsupportedAudioFileException();
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channelMask = chunk.readUnsignedInt();
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subFormat = GUID.read(chunk);
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}
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if (chunk.getFormat().equals("data")) {
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data_found = true;
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break;
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}
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}
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if (!fmt_found)
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throw new UnsupportedAudioFileException();
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if (!data_found)
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throw new UnsupportedAudioFileException();
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Map<String, Object> p = new HashMap<String, Object>();
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String s_channelmask = decodeChannelMask(channelMask);
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if (s_channelmask != null)
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p.put("channelOrder", s_channelmask);
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if (channelMask != 0)
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p.put("channelMask", channelMask);
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// validBitsPerSample is only informational for PCM data,
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// data is still encode according to SampleSizeInBits.
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p.put("validBitsPerSample", validBitsPerSample);
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AudioFormat audioformat = null;
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if (subFormat.equals(SUBTYPE_PCM)) {
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if (bits == 8) {
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audioformat = new AudioFormat(Encoding.PCM_UNSIGNED,
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samplerate, bits, channels, framesize, samplerate,
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false, p);
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} else {
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audioformat = new AudioFormat(Encoding.PCM_SIGNED, samplerate,
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bits, channels, framesize, samplerate, false, p);
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}
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} else if (subFormat.equals(SUBTYPE_IEEE_FLOAT)) {
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audioformat = new AudioFormat(Encoding.PCM_FLOAT,
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samplerate, bits, channels, framesize, samplerate, false, p);
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} else
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throw new UnsupportedAudioFileException();
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AudioFileFormat fileformat = new AudioFileFormat(
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AudioFileFormat.Type.WAVE, audioformat,
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AudioSystem.NOT_SPECIFIED);
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return fileformat;
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}
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public AudioInputStream getAudioInputStream(InputStream stream)
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throws UnsupportedAudioFileException, IOException {
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AudioFileFormat format = getAudioFileFormat(stream);
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RIFFReader riffiterator = new RIFFReader(stream);
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if (!riffiterator.getFormat().equals("RIFF"))
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throw new UnsupportedAudioFileException();
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if (!riffiterator.getType().equals("WAVE"))
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throw new UnsupportedAudioFileException();
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while (riffiterator.hasNextChunk()) {
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RIFFReader chunk = riffiterator.nextChunk();
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if (chunk.getFormat().equals("data")) {
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return new AudioInputStream(chunk, format.getFormat(), chunk
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.getSize());
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}
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}
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throw new UnsupportedAudioFileException();
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}
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public AudioFileFormat getAudioFileFormat(URL url)
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throws UnsupportedAudioFileException, IOException {
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InputStream stream = url.openStream();
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AudioFileFormat format;
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try {
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format = getAudioFileFormat(new BufferedInputStream(stream));
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} finally {
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stream.close();
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}
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return format;
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}
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public AudioFileFormat getAudioFileFormat(File file)
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throws UnsupportedAudioFileException, IOException {
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InputStream stream = new FileInputStream(file);
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AudioFileFormat format;
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try {
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format = getAudioFileFormat(new BufferedInputStream(stream));
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} finally {
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stream.close();
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}
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return format;
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}
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public AudioInputStream getAudioInputStream(URL url)
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throws UnsupportedAudioFileException, IOException {
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return getAudioInputStream(new BufferedInputStream(url.openStream()));
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}
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public AudioInputStream getAudioInputStream(File file)
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throws UnsupportedAudioFileException, IOException {
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return getAudioInputStream(new BufferedInputStream(new FileInputStream(
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file)));
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}
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}
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