| /* |
| * Copyright (c) 2007, 2016, 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.IOException; |
| import java.io.InputStream; |
| |
| import javax.sound.sampled.AudioFileFormat; |
| import javax.sound.sampled.AudioFormat; |
| import javax.sound.sampled.AudioFormat.Encoding; |
| import javax.sound.sampled.AudioInputStream; |
| import javax.sound.sampled.UnsupportedAudioFileException; |
| |
| /** |
| * Floating-point encoded (format 3) WAVE file loader. |
| * |
| * @author Karl Helgason |
| */ |
| public final class WaveFloatFileReader extends SunFileReader { |
| |
| @Override |
| StandardFileFormat getAudioFileFormatImpl(final 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; |
| long dataSize = 0; |
| |
| while (riffiterator.hasNextChunk()) { |
| RIFFReader chunk = riffiterator.nextChunk(); |
| if (chunk.getFormat().equals("fmt ")) { |
| fmt_found = true; |
| |
| int format = chunk.readUnsignedShort(); |
| if (format != WaveFileFormat.WAVE_FORMAT_IEEE_FLOAT) { |
| throw new UnsupportedAudioFileException(); |
| } |
| channels = chunk.readUnsignedShort(); |
| samplerate = chunk.readUnsignedInt(); |
| /* framerate = */chunk.readUnsignedInt(); |
| framesize = chunk.readUnsignedShort(); |
| bits = chunk.readUnsignedShort(); |
| } |
| if (chunk.getFormat().equals("data")) { |
| dataSize = chunk.getSize(); |
| data_found = true; |
| break; |
| } |
| } |
| if (!fmt_found || !data_found) { |
| throw new UnsupportedAudioFileException(); |
| } |
| AudioFormat audioformat = new AudioFormat( |
| Encoding.PCM_FLOAT, samplerate, bits, channels, |
| framesize, samplerate, false); |
| return new StandardFileFormat(AudioFileFormat.Type.WAVE, audioformat, |
| dataSize / audioformat.getFrameSize()); |
| } |
| |
| @Override |
| public AudioInputStream getAudioInputStream(final InputStream stream) |
| throws UnsupportedAudioFileException, IOException { |
| |
| final StandardFileFormat format = getAudioFileFormat(stream); |
| final AudioFormat af = format.getFormat(); |
| final long length = format.getLongFrameLength(); |
| // we've got everything, the stream is supported and it is at the |
| // beginning of the header, so find the data chunk again and return an |
| // AudioInputStream |
| final RIFFReader riffiterator = new RIFFReader(stream); |
| while (riffiterator.hasNextChunk()) { |
| RIFFReader chunk = riffiterator.nextChunk(); |
| if (chunk.getFormat().equals("data")) { |
| return new AudioInputStream(chunk, af, length); |
| } |
| } |
| throw new UnsupportedAudioFileException(); |
| } |
| } |