| /* |
| * Copyright (c) 1999, 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 javax.sound.sampled.AudioFileFormat; |
| import javax.sound.sampled.AudioFormat; |
| |
| /** |
| * WAVE file format class. |
| * |
| * @author Jan Borgersen |
| */ |
| final class WaveFileFormat extends StandardFileFormat { |
| |
| /** |
| * Wave format type. |
| */ |
| private final int waveType; |
| |
| //$$fb 2001-07-13: added management of header size in this class |
| //$$fb 2002-04-16: Fix for 4636355: RIFF audio headers could be _more_ spec compliant |
| private static final int STANDARD_HEADER_SIZE = 28; |
| |
| //$$fb 2002-04-16: Fix for 4636355: RIFF audio headers could be _more_ spec compliant |
| /** |
| * fmt_ chunk size in bytes. |
| */ |
| private static final int STANDARD_FMT_CHUNK_SIZE = 16; |
| |
| // magic numbers |
| static final int RIFF_MAGIC = 1380533830; |
| static final int WAVE_MAGIC = 1463899717; |
| static final int FMT_MAGIC = 0x666d7420; // "fmt " |
| static final int DATA_MAGIC = 0x64617461; // "data" |
| |
| // encodings |
| static final int WAVE_FORMAT_UNKNOWN = 0x0000; |
| static final int WAVE_FORMAT_PCM = 0x0001; |
| static final int WAVE_FORMAT_ADPCM = 0x0002; |
| static final int WAVE_FORMAT_IEEE_FLOAT= 0x0003; |
| static final int WAVE_FORMAT_ALAW = 0x0006; |
| static final int WAVE_FORMAT_MULAW = 0x0007; |
| static final int WAVE_FORMAT_OKI_ADPCM = 0x0010; |
| static final int WAVE_FORMAT_DIGISTD = 0x0015; |
| static final int WAVE_FORMAT_DIGIFIX = 0x0016; |
| static final int WAVE_IBM_FORMAT_MULAW = 0x0101; |
| static final int WAVE_IBM_FORMAT_ALAW = 0x0102; |
| static final int WAVE_IBM_FORMAT_ADPCM = 0x0103; |
| static final int WAVE_FORMAT_DVI_ADPCM = 0x0011; |
| static final int WAVE_FORMAT_SX7383 = 0x1C07; |
| static final int WAVE_FORMAT_EXTENSIBLE= 0xFFFE; |
| |
| WaveFileFormat(final AudioFileFormat.Type type, final long byteLength, |
| final AudioFormat format, final long frameLength) { |
| super(type, byteLength, format, frameLength); |
| |
| AudioFormat.Encoding encoding = format.getEncoding(); |
| |
| if( encoding.equals(AudioFormat.Encoding.ALAW) ) { |
| waveType = WAVE_FORMAT_ALAW; |
| } else if( encoding.equals(AudioFormat.Encoding.ULAW) ) { |
| waveType = WAVE_FORMAT_MULAW; |
| } else if( encoding.equals(AudioFormat.Encoding.PCM_SIGNED) || |
| encoding.equals(AudioFormat.Encoding.PCM_UNSIGNED) ) { |
| waveType = WAVE_FORMAT_PCM; |
| } else { |
| waveType = WAVE_FORMAT_UNKNOWN; |
| } |
| } |
| |
| int getWaveType() { |
| return waveType; |
| } |
| |
| int getHeaderSize() { |
| return getHeaderSize(getWaveType()); |
| } |
| |
| static int getHeaderSize(int waveType) { |
| //$$fb 2002-04-16: Fix for 4636355: RIFF audio headers could be _more_ spec compliant |
| // use dynamic format chunk size |
| return STANDARD_HEADER_SIZE + getFmtChunkSize(waveType); |
| } |
| |
| static int getFmtChunkSize(int waveType) { |
| //$$fb 2002-04-16: Fix for 4636355: RIFF audio headers could be _more_ spec compliant |
| // add 2 bytes for "codec specific data length" for non-PCM codecs |
| int result = STANDARD_FMT_CHUNK_SIZE; |
| if (waveType != WAVE_FORMAT_PCM) { |
| result += 2; // WORD for "codec specific data length" |
| } |
| return result; |
| } |
| } |