829N/A/*
6321N/A * Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved.
829N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
829N/A *
829N/A * This code is free software; you can redistribute it and/or modify it
829N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
829N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
829N/A *
829N/A * This code is distributed in the hope that it will be useful, but WITHOUT
829N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
829N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
829N/A * version 2 for more details (a copy is included in the LICENSE file that
829N/A * accompanied this code).
829N/A *
829N/A * You should have received a copy of the GNU General Public License version
829N/A * 2 along with this work; if not, write to the Free Software Foundation,
829N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
829N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
829N/A */
829N/Apackage com.sun.media.sound;
829N/A
829N/Aimport java.io.BufferedInputStream;
829N/Aimport java.io.File;
829N/Aimport java.io.FileInputStream;
829N/Aimport java.io.IOException;
829N/Aimport java.io.InputStream;
829N/Aimport java.net.URL;
829N/A
829N/Aimport javax.sound.sampled.AudioFileFormat;
829N/Aimport javax.sound.sampled.AudioFormat;
2716N/Aimport javax.sound.sampled.AudioFormat.Encoding;
829N/Aimport javax.sound.sampled.AudioInputStream;
829N/Aimport javax.sound.sampled.AudioSystem;
829N/Aimport javax.sound.sampled.UnsupportedAudioFileException;
829N/Aimport javax.sound.sampled.spi.AudioFileReader;
829N/A
829N/A/**
829N/A * Floating-point encoded (format 3) WAVE file loader.
829N/A *
829N/A * @author Karl Helgason
829N/A */
6321N/Apublic final class WaveFloatFileReader extends AudioFileReader {
829N/A
829N/A public AudioFileFormat getAudioFileFormat(InputStream stream)
829N/A throws UnsupportedAudioFileException, IOException {
829N/A
829N/A stream.mark(200);
829N/A AudioFileFormat format;
829N/A try {
829N/A format = internal_getAudioFileFormat(stream);
829N/A } finally {
829N/A stream.reset();
829N/A }
829N/A return format;
829N/A }
829N/A
829N/A private AudioFileFormat internal_getAudioFileFormat(InputStream stream)
829N/A throws UnsupportedAudioFileException, IOException {
829N/A
829N/A RIFFReader riffiterator = new RIFFReader(stream);
829N/A if (!riffiterator.getFormat().equals("RIFF"))
829N/A throw new UnsupportedAudioFileException();
829N/A if (!riffiterator.getType().equals("WAVE"))
829N/A throw new UnsupportedAudioFileException();
829N/A
829N/A boolean fmt_found = false;
829N/A boolean data_found = false;
829N/A
829N/A int channels = 1;
829N/A long samplerate = 1;
829N/A int framesize = 1;
829N/A int bits = 1;
829N/A
829N/A while (riffiterator.hasNextChunk()) {
829N/A RIFFReader chunk = riffiterator.nextChunk();
829N/A
829N/A if (chunk.getFormat().equals("fmt ")) {
829N/A fmt_found = true;
829N/A
829N/A int format = chunk.readUnsignedShort();
829N/A if (format != 3) // WAVE_FORMAT_IEEE_FLOAT only
829N/A throw new UnsupportedAudioFileException();
829N/A channels = chunk.readUnsignedShort();
829N/A samplerate = chunk.readUnsignedInt();
829N/A /* framerate = */chunk.readUnsignedInt();
829N/A framesize = chunk.readUnsignedShort();
829N/A bits = chunk.readUnsignedShort();
829N/A }
829N/A if (chunk.getFormat().equals("data")) {
829N/A data_found = true;
829N/A break;
829N/A }
829N/A }
829N/A
829N/A if (!fmt_found)
829N/A throw new UnsupportedAudioFileException();
829N/A if (!data_found)
829N/A throw new UnsupportedAudioFileException();
829N/A
829N/A AudioFormat audioformat = new AudioFormat(
2716N/A Encoding.PCM_FLOAT, samplerate, bits, channels,
829N/A framesize, samplerate, false);
829N/A AudioFileFormat fileformat = new AudioFileFormat(
829N/A AudioFileFormat.Type.WAVE, audioformat,
829N/A AudioSystem.NOT_SPECIFIED);
829N/A return fileformat;
829N/A }
829N/A
829N/A public AudioInputStream getAudioInputStream(InputStream stream)
829N/A throws UnsupportedAudioFileException, IOException {
829N/A
829N/A AudioFileFormat format = getAudioFileFormat(stream);
829N/A RIFFReader riffiterator = new RIFFReader(stream);
829N/A if (!riffiterator.getFormat().equals("RIFF"))
829N/A throw new UnsupportedAudioFileException();
829N/A if (!riffiterator.getType().equals("WAVE"))
829N/A throw new UnsupportedAudioFileException();
829N/A while (riffiterator.hasNextChunk()) {
829N/A RIFFReader chunk = riffiterator.nextChunk();
829N/A if (chunk.getFormat().equals("data")) {
829N/A return new AudioInputStream(chunk, format.getFormat(),
829N/A chunk.getSize());
829N/A }
829N/A }
829N/A throw new UnsupportedAudioFileException();
829N/A }
829N/A
829N/A public AudioFileFormat getAudioFileFormat(URL url)
829N/A throws UnsupportedAudioFileException, IOException {
829N/A InputStream stream = url.openStream();
829N/A AudioFileFormat format;
829N/A try {
829N/A format = getAudioFileFormat(new BufferedInputStream(stream));
829N/A } finally {
829N/A stream.close();
829N/A }
829N/A return format;
829N/A }
829N/A
829N/A public AudioFileFormat getAudioFileFormat(File file)
829N/A throws UnsupportedAudioFileException, IOException {
829N/A InputStream stream = new FileInputStream(file);
829N/A AudioFileFormat format;
829N/A try {
829N/A format = getAudioFileFormat(new BufferedInputStream(stream));
829N/A } finally {
829N/A stream.close();
829N/A }
829N/A return format;
829N/A }
829N/A
829N/A public AudioInputStream getAudioInputStream(URL url)
829N/A throws UnsupportedAudioFileException, IOException {
829N/A return getAudioInputStream(new BufferedInputStream(url.openStream()));
829N/A }
829N/A
829N/A public AudioInputStream getAudioInputStream(File file)
829N/A throws UnsupportedAudioFileException, IOException {
829N/A return getAudioInputStream(new BufferedInputStream(new FileInputStream(
829N/A file)));
829N/A }
829N/A}