1 /*

     2  * Copyright 1999-2007 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Sun designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Sun in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

    26 package com.sun.media.sound;

    27 

    28 import java.io.InputStream;

    29 

    30 import javax.sound.sampled.AudioFormat;

    31 import javax.sound.sampled.AudioInputStream;

    32 

    33 import javax.sound.sampled.spi.FormatConversionProvider;

    34 

    35 

    36 /**

    37  * A codec can encode and/or decode audio data.  It provides an

    38  * AudioInputStream from which processed data may be read.

    39  * <p>

    40  * Its input format represents the format of the incoming

    41  * audio data, or the format of the data in the underlying stream.

    42  * <p>

    43  * Its output format represents the format of the processed, outgoing

    44  * audio data.  This is the format of the data which may be read from

    45  * the filtered stream.

    46  *

    47  * @author Kara Kytle

    48  */

    49 abstract class SunCodec extends FormatConversionProvider {

    50 

    51     AudioFormat.Encoding[] inputEncodings;

    52     AudioFormat.Encoding[] outputEncodings;

    53 

    54     /**

    55      * Constructs a new codec object.

    56      */

    57     protected SunCodec(AudioFormat.Encoding[] inputEncodings, AudioFormat.Encoding[] outputEncodings) {

    58 

    59         this.inputEncodings = inputEncodings;

    60         this.outputEncodings = outputEncodings;

    61     }

    62 

    63 

    64     /**

    65      */

    66     public AudioFormat.Encoding[] getSourceEncodings() {

    67 

    68         AudioFormat.Encoding[] encodings = new AudioFormat.Encoding[inputEncodings.length];

    69         System.arraycopy(inputEncodings, 0, encodings, 0, inputEncodings.length);

    70         return encodings;

    71     }

    72     /**

    73      */

    74     public AudioFormat.Encoding[] getTargetEncodings() {

    75 

    76         AudioFormat.Encoding[] encodings = new AudioFormat.Encoding[outputEncodings.length];

    77         System.arraycopy(outputEncodings, 0, encodings, 0, outputEncodings.length);

    78         return encodings;

    79     }

    80 

    81     /**

    82      */

    83     public abstract AudioFormat.Encoding[] getTargetEncodings(AudioFormat sourceFormat);

    84 

    85 

    86     /**

    87      */

    88     public abstract AudioFormat[] getTargetFormats(AudioFormat.Encoding targetEncoding, AudioFormat sourceFormat);

    89 

    90 

    91     /**

    92      */

    93     public abstract AudioInputStream getAudioInputStream(AudioFormat.Encoding targetEncoding, AudioInputStream sourceStream);

    94     /**

    95      */

    96     public abstract AudioInputStream getAudioInputStream(AudioFormat targetFormat, AudioInputStream sourceStream);

    97 

    98 

    99 }