/* * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package com.sun.media.sound; import java.io.BufferedInputStream;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.net.URL;import java.util.HashMap;import java.util.Map; import javax.sound.sampled.AudioFileFormat;import javax.sound.sampled.AudioFormat;import javax.sound.sampled.AudioInputStream;import javax.sound.sampled.AudioSystem;import javax.sound.sampled.UnsupportedAudioFileException;import javax.sound.sampled.AudioFormat.Encoding;import javax.sound.sampled.spi.AudioFileReader; /** * WAVE file reader for files using format WAVE_FORMAT_EXTENSIBLE (0xFFFE). * * @author Karl Helgason */public class WaveExtensibleFileReader extends AudioFileReader {     static private class GUID {        long i1;         int s1;         int s2;         int x1;         int x2;         int x3;         int x4;         int x5;         int x6;         int x7;         int x8;         private GUID() {        }         public GUID(long i1, int s1, int s2, int x1, int x2, int x3, int x4,                int x5, int x6, int x7, int x8) {            this.i1 = i1;            this.s1 = s1;            this.s2 = s2;            this.x1 = x1;            this.x2 = x2;            this.x3 = x3;            this.x4 = x4;            this.x5 = x5;            this.x6 = x6;            this.x7 = x7;            this.x8 = x8;        }         public static GUID read(RIFFReader riff) throws IOException {            GUID d = new GUID();            d.i1 = riff.readUnsignedInt();            d.s1 = riff.readUnsignedShort();            d.s2 = riff.readUnsignedShort();            d.x1 = riff.readUnsignedByte();            d.x2 = riff.readUnsignedByte();            d.x3 = riff.readUnsignedByte();            d.x4 = riff.readUnsignedByte();            d.x5 = riff.readUnsignedByte();            d.x6 = riff.readUnsignedByte();            d.x7 = riff.readUnsignedByte();            d.x8 = riff.readUnsignedByte();            return d;        }         public int hashCode() {            return (int) i1;        }         public boolean equals(Object obj) {            if (!(obj instanceof GUID))                return false;            GUID t = (GUID) obj;            if (i1 != t.i1)                return false;            if (s1 != t.s1)                return false;            if (s2 != t.s2)                return false;            if (x1 != t.x1)                return false;            if (x2 != t.x2)                return false;            if (x3 != t.x3)                return false;            if (x4 != t.x4)                return false;            if (x5 != t.x5)                return false;            if (x6 != t.x6)                return false;            if (x7 != t.x7)                return false;            if (x8 != t.x8)                return false;            return true;        }     }     private static String[] channelnames = { "FL", "FR", "FC", "LF",            "BL",            "BR", // 5.1            "FLC", "FLR", "BC", "SL", "SR", "TC", "TFL", "TFC", "TFR", "TBL",            "TBC", "TBR" };     private static String[] allchannelnames = { "w1", "w2", "w3", "w4", "w5",            "w6", "w7", "w8", "w9", "w10", "w11", "w12", "w13", "w14", "w15",            "w16", "w17", "w18", "w19", "w20", "w21", "w22", "w23", "w24",            "w25", "w26", "w27", "w28", "w29", "w30", "w31", "w32", "w33",            "w34", "w35", "w36", "w37", "w38", "w39", "w40", "w41", "w42",            "w43", "w44", "w45", "w46", "w47", "w48", "w49", "w50", "w51",            "w52", "w53", "w54", "w55", "w56", "w57", "w58", "w59", "w60",            "w61", "w62", "w63", "w64" };     private static GUID SUBTYPE_PCM = new GUID(0x00000001, 0x0000, 0x0010,            0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);     private static GUID SUBTYPE_IEEE_FLOAT = new GUID(0x00000003, 0x0000,            0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);     private String decodeChannelMask(long channelmask) {        StringBuffer sb = new StringBuffer();        long m = 1;        for (int i = 0; i < allchannelnames.length; i++) {            if ((channelmask & m) != 0L) {                if (i < channelnames.length) {                    sb.append(channelnames[i] + " ");                } else {                    sb.append(allchannelnames[i] + " ");                }            }            m *= 2L;        }        if (sb.length() == 0)            return null;        return sb.substring(0, sb.length() - 1);     }     public AudioFileFormat getAudioFileFormat(InputStream stream)            throws UnsupportedAudioFileException, IOException {         stream.mark(200);        AudioFileFormat format;        try {            format = internal_getAudioFileFormat(stream);        } finally {            stream.reset();        }        return format;    }     private AudioFileFormat internal_getAudioFileFormat(InputStream stream)            throws UnsupportedAudioFileException, IOException {         RIFFReader riffiterator = new RIFFReader(stream);        if (!riffiterator.getFormat().equals("RIFF"))            throw new UnsupportedAudioFileException();        if (!riffiterator.getType().equals("WAVE"))            throw new UnsupportedAudioFileException();         boolean fmt_found = false;        boolean data_found = false;         int channels = 1;        long samplerate = 1;        // long framerate = 1;        int framesize = 1;        int bits = 1;        int validBitsPerSample = 1;        long channelMask = 0;        GUID subFormat = null;         while (riffiterator.hasNextChunk()) {            RIFFReader chunk = riffiterator.nextChunk();             if (chunk.getFormat().equals("fmt ")) {                fmt_found = true;                 int format = chunk.readUnsignedShort();                if (format != 0xFFFE)                    throw new UnsupportedAudioFileException(); // WAVE_FORMAT_EXTENSIBLE                // only                channels = chunk.readUnsignedShort();                samplerate = chunk.readUnsignedInt();                /* framerate = */chunk.readUnsignedInt();                framesize = chunk.readUnsignedShort();                bits = chunk.readUnsignedShort();                int cbSize = chunk.readUnsignedShort();                if (cbSize != 22)                    throw new UnsupportedAudioFileException();                validBitsPerSample = chunk.readUnsignedShort();                if (validBitsPerSample > bits)                    throw new UnsupportedAudioFileException();                channelMask = chunk.readUnsignedInt();                subFormat = GUID.read(chunk);             }            if (chunk.getFormat().equals("data")) {                data_found = true;                break;            }        }         if (!fmt_found)            throw new UnsupportedAudioFileException();        if (!data_found)            throw new UnsupportedAudioFileException();         Map<String, Object> p = new HashMap<String, Object>();        String s_channelmask = decodeChannelMask(channelMask);        if (s_channelmask != null)            p.put("channelOrder", s_channelmask);        if (channelMask != 0)            p.put("channelMask", channelMask);        // validBitsPerSample is only informational for PCM data,        // data is still encode according to SampleSizeInBits.        p.put("validBitsPerSample", validBitsPerSample);         AudioFormat audioformat = null;        if (subFormat.equals(SUBTYPE_PCM)) {            if (bits == 8) {                audioformat = new AudioFormat(Encoding.PCM_UNSIGNED,                        samplerate, bits, channels, framesize, samplerate,                        false, p);            } else {                audioformat = new AudioFormat(Encoding.PCM_SIGNED, samplerate,                        bits, channels, framesize, samplerate, false, p);            }        } else if (subFormat.equals(SUBTYPE_IEEE_FLOAT)) {            audioformat = new AudioFormat(Encoding.PCM_FLOAT,                    samplerate, bits, channels, framesize, samplerate, false, p);        } else            throw new UnsupportedAudioFileException();         AudioFileFormat fileformat = new AudioFileFormat(                AudioFileFormat.Type.WAVE, audioformat,                AudioSystem.NOT_SPECIFIED);        return fileformat;    }     public AudioInputStream getAudioInputStream(InputStream stream)            throws UnsupportedAudioFileException, IOException {         AudioFileFormat format = getAudioFileFormat(stream);        RIFFReader riffiterator = new RIFFReader(stream);        if (!riffiterator.getFormat().equals("RIFF"))            throw new UnsupportedAudioFileException();        if (!riffiterator.getType().equals("WAVE"))            throw new UnsupportedAudioFileException();        while (riffiterator.hasNextChunk()) {            RIFFReader chunk = riffiterator.nextChunk();            if (chunk.getFormat().equals("data")) {                return new AudioInputStream(chunk, format.getFormat(), chunk                        .getSize());            }        }        throw new UnsupportedAudioFileException();    }     public AudioFileFormat getAudioFileFormat(URL url)            throws UnsupportedAudioFileException, IOException {        InputStream stream = url.openStream();        AudioFileFormat format;        try {            format = getAudioFileFormat(new BufferedInputStream(stream));        } finally {            stream.close();        }        return format;    }     public AudioFileFormat getAudioFileFormat(File file)            throws UnsupportedAudioFileException, IOException {        InputStream stream = new FileInputStream(file);        AudioFileFormat format;        try {            format = getAudioFileFormat(new BufferedInputStream(stream));        } finally {            stream.close();        }        return format;    }     public AudioInputStream getAudioInputStream(URL url)            throws UnsupportedAudioFileException, IOException {        return getAudioInputStream(new BufferedInputStream(url.openStream()));    }     public AudioInputStream getAudioInputStream(File file)            throws UnsupportedAudioFileException, IOException {        return getAudioInputStream(new BufferedInputStream(new FileInputStream(                file)));    } }