| /* |
| * Copyright (c) 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.io.BufferedInputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URL; |
| |
| 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.spi.AudioFileReader; |
| |
| /** |
| * Floating-point encoded (format 3) WAVE file loader. |
| * |
| * @author Karl Helgason |
| */ |
| public class WaveFloatFileReader extends AudioFileReader { |
| |
| 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; |
| int framesize = 1; |
| int bits = 1; |
| |
| while (riffiterator.hasNextChunk()) { |
| RIFFReader chunk = riffiterator.nextChunk(); |
| |
| if (chunk.getFormat().equals("fmt ")) { |
| fmt_found = true; |
| |
| int format = chunk.readUnsignedShort(); |
| if (format != 3) // WAVE_FORMAT_IEEE_FLOAT only |
| throw new UnsupportedAudioFileException(); |
| channels = chunk.readUnsignedShort(); |
| samplerate = chunk.readUnsignedInt(); |
| /* framerate = */chunk.readUnsignedInt(); |
| framesize = chunk.readUnsignedShort(); |
| bits = chunk.readUnsignedShort(); |
| } |
| if (chunk.getFormat().equals("data")) { |
| data_found = true; |
| break; |
| } |
| } |
| |
| if (!fmt_found) |
| throw new UnsupportedAudioFileException(); |
| if (!data_found) |
| throw new UnsupportedAudioFileException(); |
| |
| AudioFormat audioformat = new AudioFormat( |
| AudioFloatConverter.PCM_FLOAT, samplerate, bits, channels, |
| framesize, samplerate, false); |
| 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))); |
| } |
| } |