/* * Copyright (c) 1999, 2007, 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.util.Vector;import java.io.File;import java.io.InputStream;import java.io.OutputStream;import java.io.IOException;import java.io.EOFException;import java.net.URL;import java.net.MalformedURLException; import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.DataInputStream;import java.io.FileInputStream;import java.io.DataOutputStream;import java.io.FileOutputStream;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.SequenceInputStream; import javax.sound.sampled.AudioFileFormat;import javax.sound.sampled.AudioInputStream;import javax.sound.sampled.AudioFormat;import javax.sound.sampled.AudioSystem;import javax.sound.sampled.UnsupportedAudioFileException;   /** * WAVE file reader. * * @author Kara Kytle * @author Jan Borgersen * @author Florian Bomers */public class WaveFileReader extends SunFileReader {     private static final int MAX_READ_LENGTH = 12;     /**     * WAVE reader type     */     public static final AudioFileFormat.Type types[] = {        AudioFileFormat.Type.WAVE    };      /**     * Constructs a new WaveFileReader object.     */    public WaveFileReader() {    }      /**     * Obtains the audio file format of the input stream provided.  The stream must     * point to valid audio file data.  In general, audio file providers may     * need to read some data from the stream before determining whether they     * support it.  These parsers must     * be able to mark the stream, read enough data to determine whether they     * support the stream, and, if not, reset the stream's read pointer to its original     * position.  If the input stream does not support this, this method may fail     * with an IOException.     * @param stream the input stream from which file format information should be     * extracted     * @return an <code>AudioFileFormat</code> object describing the audio file format     * @throws UnsupportedAudioFileException if the stream does not point to valid audio     * file data recognized by the system     * @throws IOException if an I/O exception occurs     * @see InputStream#markSupported     * @see InputStream#mark     */    public AudioFileFormat getAudioFileFormat(InputStream stream) throws UnsupportedAudioFileException, IOException {        // fix for 4489272: AudioSystem.getAudioFileFormat() fails for InputStream, but works for URL        AudioFileFormat aff = getFMT(stream, true);        // the following is not strictly necessary - but was implemented like that in 1.3.0 - 1.4.1        // so I leave it as it was. May remove this for 1.5.0        stream.reset();        return aff;    }      /**     * Obtains the audio file format of the URL provided.  The URL must     * point to valid audio file data.     * @param url the URL from which file format information should be     * extracted     * @return an <code>AudioFileFormat</code> object describing the audio file format     * @throws UnsupportedAudioFileException if the URL does not point to valid audio     * file data recognized by the system     * @throws IOException if an I/O exception occurs     */    public AudioFileFormat getAudioFileFormat(URL url) throws UnsupportedAudioFileException, IOException {        InputStream urlStream = url.openStream(); // throws IOException        AudioFileFormat fileFormat = null;        try {            fileFormat = getFMT(urlStream, false);        } finally {            urlStream.close();        }        return fileFormat;    }      /**     * Obtains the audio file format of the File provided.  The File must     * point to valid audio file data.     * @param file the File from which file format information should be     * extracted     * @return an <code>AudioFileFormat</code> object describing the audio file format     * @throws UnsupportedAudioFileException if the File does not point to valid audio     * file data recognized by the system     * @throws IOException if an I/O exception occurs     */    public AudioFileFormat getAudioFileFormat(File file) throws UnsupportedAudioFileException, IOException {        AudioFileFormat fileFormat = null;        FileInputStream fis = new FileInputStream(file);       // throws IOException        // part of fix for 4325421        try {            fileFormat = getFMT(fis, false);        } finally {            fis.close();        }         return fileFormat;    }      /**     * Obtains an audio stream from the input stream provided.  The stream must     * point to valid audio file data.  In general, audio file providers may     * need to read some data from the stream before determining whether they     * support it.  These parsers must     * be able to mark the stream, read enough data to determine whether they     * support the stream, and, if not, reset the stream's read pointer to its original     * position.  If the input stream does not support this, this method may fail     * with an IOException.     * @param stream the input stream from which the <code>AudioInputStream</code> should be     * constructed     * @return an <code>AudioInputStream</code> object based on the audio file data contained     * in the input stream.     * @throws UnsupportedAudioFileException if the stream does not point to valid audio     * file data recognized by the system     * @throws IOException if an I/O exception occurs     * @see InputStream#markSupported     * @see InputStream#mark     */    public AudioInputStream getAudioInputStream(InputStream stream) throws UnsupportedAudioFileException, IOException {        // getFMT leaves the input stream at the beginning of the audio data        AudioFileFormat fileFormat = getFMT(stream, true); // throws UnsupportedAudioFileException, IOException         // we've got everything, and the stream is at the        // beginning of the audio data, so return an AudioInputStream.        return new AudioInputStream(stream, fileFormat.getFormat(), fileFormat.getFrameLength());    }      /**     * Obtains an audio stream from the URL provided.  The URL must     * point to valid audio file data.     * @param url the URL for which the <code>AudioInputStream</code> should be     * constructed     * @return an <code>AudioInputStream</code> object based on the audio file data pointed     * to by the URL     * @throws UnsupportedAudioFileException if the URL does not point to valid audio     * file data recognized by the system     * @throws IOException if an I/O exception occurs     */    public AudioInputStream getAudioInputStream(URL url) throws UnsupportedAudioFileException, IOException {        InputStream urlStream = url.openStream();  // throws IOException        AudioFileFormat fileFormat = null;        try {            fileFormat = getFMT(urlStream, false);        } finally {            if (fileFormat == null) {                urlStream.close();            }        }        return new AudioInputStream(urlStream, fileFormat.getFormat(), fileFormat.getFrameLength());    }      /**     * Obtains an audio stream from the File provided.  The File must     * point to valid audio file data.     * @param file the File for which the <code>AudioInputStream</code> should be     * constructed     * @return an <code>AudioInputStream</code> object based on the audio file data pointed     * to by the File     * @throws UnsupportedAudioFileException if the File does not point to valid audio     * file data recognized by the system     * @throws IOException if an I/O exception occurs     */    public AudioInputStream getAudioInputStream(File file) throws UnsupportedAudioFileException, IOException {        FileInputStream fis = new FileInputStream(file); // throws IOException        AudioFileFormat fileFormat = null;        // part of fix for 4325421        try {            fileFormat = getFMT(fis, false);        } finally {            if (fileFormat == null) {                fis.close();            }        }        return new AudioInputStream(fis, fileFormat.getFormat(), fileFormat.getFrameLength());    }      //--------------------------------------------------------------------      private AudioFileFormat getFMT(InputStream stream, boolean doReset) throws UnsupportedAudioFileException, IOException {         // assumes sream is rewound         int bytesRead;        int nread = 0;        int fmt;        int length = 0;        int wav_type = 0;        short channels;        long sampleRate;        long avgBytesPerSec;        short blockAlign;        int sampleSizeInBits;        AudioFormat.Encoding encoding = null;         DataInputStream dis = new DataInputStream( stream );         if (doReset) {            dis.mark(MAX_READ_LENGTH);        }         int magic = dis.readInt();        int fileLength = rllong(dis);        int waveMagic = dis.readInt();        int totallength;        if (fileLength <= 0) {            fileLength = AudioSystem.NOT_SPECIFIED;            totallength = AudioSystem.NOT_SPECIFIED;        } else {            totallength = fileLength + 8;        }         if ((magic != WaveFileFormat.RIFF_MAGIC) || (waveMagic != WaveFileFormat.WAVE_MAGIC)) {            // not WAVE, throw UnsupportedAudioFileException            if (doReset) {                dis.reset();            }            throw new UnsupportedAudioFileException("not a WAVE file");        }         // find and read the "fmt" chunk        // we break out of this loop either by hitting EOF or finding "fmt "        while(true) {             try {                fmt = dis.readInt();                nread += 4;                if( fmt==WaveFileFormat.FMT_MAGIC ) {                    // we've found the 'fmt' chunk                    break;                } else {                    // else not 'fmt', skip this chunk                    length = rllong(dis);                    nread += 4;                    if (length % 2 > 0) length++;                    nread += dis.skipBytes(length);                }            } catch (EOFException eof) {                                // we've reached the end of the file without finding the 'fmt' chunk                throw new UnsupportedAudioFileException("Not a valid WAV file");            }        }         // Read the format chunk size.        length = rllong(dis);        nread += 4;         // This is the nread position at the end of the format chunk        int endLength = nread + length;         // Read the wave format data out of the format chunk.         // encoding.        wav_type = rlshort(dis); nread += 2;         if (wav_type == WaveFileFormat.WAVE_FORMAT_PCM)            encoding = AudioFormat.Encoding.PCM_SIGNED;  // if 8-bit, we need PCM_UNSIGNED, below...        else if ( wav_type == WaveFileFormat.WAVE_FORMAT_ALAW )            encoding = AudioFormat.Encoding.ALAW;        else if ( wav_type == WaveFileFormat.WAVE_FORMAT_MULAW )            encoding = AudioFormat.Encoding.ULAW;        else {            // we don't support any other WAVE formats....            throw new UnsupportedAudioFileException("Not a supported WAV file");        }        // channels        channels = rlshort(dis); nread += 2;         // sample rate.        sampleRate = rllong(dis); nread += 4;         // this is the avgBytesPerSec        avgBytesPerSec = rllong(dis); nread += 4;         // this is blockAlign value        blockAlign = rlshort(dis); nread += 2;         // this is the PCM-specific value bitsPerSample        sampleSizeInBits = (int)rlshort(dis); nread += 2;         // if sampleSizeInBits==8, we need to use PCM_UNSIGNED        if ((sampleSizeInBits==8) && encoding.equals(AudioFormat.Encoding.PCM_SIGNED))            encoding = AudioFormat.Encoding.PCM_UNSIGNED;         // skip any difference between the length of the format chunk        // and what we read         // if the length of the chunk is odd, there's an extra pad byte        // at the end.  i've never seen this in the fmt chunk, but we        // should check to make sure.         if (length % 2 != 0) length += 1;         // $$jb: 07.28.99: endLength>nread, not length>nread.        //       This fixes #4257986        if (endLength > nread)            nread += dis.skipBytes(endLength - nread);         // we have a format now, so find the "data" chunk        // we break out of this loop either by hitting EOF or finding "data"        // $$kk: if "data" chunk precedes "fmt" chunk we are hosed -- can this legally happen?        nread = 0;        while(true) {            try{                int datahdr = dis.readInt();                nread+=4;                if (datahdr == WaveFileFormat.DATA_MAGIC) {                    // we've found the 'data' chunk                    break;                } else {                    // else not 'data', skip this chunk                    int thisLength = rllong(dis); nread += 4;                    if (thisLength % 2 > 0) thisLength++;                    nread += dis.skipBytes(thisLength);                }            } catch (EOFException eof) {                // we've reached the end of the file without finding the 'data' chunk                throw new UnsupportedAudioFileException("Not a valid WAV file");            }        }        // this is the length of the data chunk        int dataLength = rllong(dis); nread += 4;         // now build the new AudioFileFormat and return         AudioFormat format = new AudioFormat(encoding,                                             (float)sampleRate,                                             sampleSizeInBits, channels,                                             calculatePCMFrameSize(sampleSizeInBits, channels),                                             (float)sampleRate, false);         return new WaveFileFormat(AudioFileFormat.Type.WAVE,                                  totallength,                                  format,                                  dataLength / format.getFrameSize());    } }