AppTestApplyGainFilter.java 文件源码

/**
 * main.
 * @param args {@link String}{@code []}
 * @throws IOException due to file errors.
 */
@SuppressWarnings("nls")
public static void main(final String[] args) throws IOException {

    BasicConfigurator.configure();

    final File in = new File("src/test/mp3/1000Hz.mp3");
    // assume there is just one id 3 tag at the very beginning...
    final ID3Tag firstID3Tag = MPEGAudio.decodeFirstID3Tag(in);
    if (LOG.isInfoEnabled()) {
        LOG.info("" + firstID3Tag); //$NON-NLS-1$
    }
    final DecodingResult dr = MPEGAudio.decode(in, MPEGAudioContentFilter.MPEG_AUDIO_FRAMES);
    //        final File out = File.createTempFile("TestIntegrationReadWrite-TEST", ".mp3"); //$NON-NLS-1$ //$NON-NLS-2$
    final File out = new File("out.mp3");
    if (LOG.isInfoEnabled()) {
        LOG.info("Created tmp file [" + out.getAbsolutePath() + "]"); //$NON-NLS-1$ //$NON-NLS-2$
    }
    try (FileOutputStream fos = new FileOutputStream(out)) {
        final WaveFormGainFilter filter = new CosineGainFilter();
        filter.setWavelengthInSecs(20f);
        //            Filter filter = new FixFactorGainFIlter(0.9);
        MPEGAudio.encode(dr.getContent(), filter, fos, true);
    }

}