GetAudioStreamConversionSupported.java

/*
 * Copyright (c) 2015, 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.
 *
 * 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
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 * questions.
 */

import java.io.ByteArrayInputStream;
import java.io.InputStream;

import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.spi.FormatConversionProvider;

import static java.util.ServiceLoader.load;

/**
 * @test
 * @bug 8146144
 */
public final class GetAudioStreamConversionSupported {

    static final AudioFormat.Encoding[] encodings = {
            AudioFormat.Encoding.ALAW, AudioFormat.Encoding.ULAW,
            AudioFormat.Encoding.PCM_SIGNED, AudioFormat.Encoding.PCM_UNSIGNED,
            AudioFormat.Encoding.PCM_FLOAT, new AudioFormat.Encoding("Test")
    };

    public static void main(final String[] args) {
        for (final int sampleSize : new int[]{4, 8, 16, 24, 32}) {
            for (final AudioFormat.Encoding enc : encodings) {
                for (final Boolean endian : new boolean[]{false, true}) {
                    testAS(enc, endian, sampleSize);
                    for (final FormatConversionProvider fcp : load
                            (FormatConversionProvider.class)) {
                        testFCP(fcp, enc, endian, sampleSize);
                    }
                }
            }
        }
    }

    /**
     * Tests the part of AudioSystem API, which implemented via
     * FormatConversionProvider.
     * <p>
     * AudioSystem always support conversion to the same encoding/format.
     */
    private static void testAS(final AudioFormat.Encoding enc,
                               final Boolean endian, final int sampleSize) {
        final AudioInputStream ais = getStream(enc, endian, sampleSize);
        final AudioFormat format = ais.getFormat();
        if (!AudioSystem.isConversionSupported(enc, format)) {
            throw new RuntimeException("Format: " + format);
        }
        if (!AudioSystem.isConversionSupported(format, format)) {
            throw new RuntimeException("Format: " + format);
        }
        AudioSystem.getAudioInputStream(enc, ais);
        AudioSystem.getAudioInputStream(format, ais);
    }

    /**
     * Tests the FormatConversionProvider API directly.
     */
    private static void testFCP(final FormatConversionProvider fcp,
                                final AudioFormat.Encoding enc,
                                final Boolean endian, final int sampleSize) {
        System.out.println("fcp = " + fcp);
        final AudioInputStream ais = getStream(enc, endian, sampleSize);
        final AudioFormat frmt = ais.getFormat();
        if (fcp.isConversionSupported(enc, frmt)) {
            try {
                fcp.getAudioInputStream(enc, ais);
            } catch (final IllegalArgumentException ex) {
                throw new RuntimeException("Format: " + frmt, ex);
            }
        } else {
            try {
                fcp.getAudioInputStream(enc, ais);
                throw new RuntimeException("Format: " + frmt);
            } catch (final IllegalArgumentException ignored) {
            }
            try {
                fcp.getAudioInputStream(frmt, ais);
                throw new RuntimeException("Format: " + frmt);
            } catch (final IllegalArgumentException ignored) {
            }
        }
        if (fcp.isConversionSupported(frmt, frmt)) {
            try {
                fcp.getAudioInputStream(enc, ais);
                fcp.getAudioInputStream(frmt, ais);
            } catch (final IllegalArgumentException ex) {
                throw new RuntimeException("Format: " + frmt, ex);
            }
        } else {
            try {
                fcp.getAudioInputStream(frmt, ais);
                throw new RuntimeException("Format: " + frmt);
            } catch (final IllegalArgumentException ignored) {
            }
        }
    }

    private static AudioInputStream getStream(final AudioFormat.Encoding enc,
                                              final Boolean end,
                                              final int sampleSize) {
        final AudioFormat ftmt
                = new AudioFormat(enc, 8000, sampleSize, 1, 1, 8000, end);
        final byte[] fakedata = new byte[100];
        final InputStream in = new ByteArrayInputStream(fakedata);
        return new AudioInputStream(in, ftmt, fakedata.length);
    }
}