NFFTStrategy.java 文件源码

private void processMonitorQueryToSerializeFingerprints(float[] audioBuffer,SerializedFingerprintsHandler handler,double queryOffset){
    int samplerate = Config.getInt(Key.NFFT_SAMPLE_RATE);
    int size = Config.getInt(Key.NFFT_SIZE);
    int overlap = size - Config.getInt(Key.NFFT_STEP_SIZE);

    AudioDispatcher d;
    try {
        d = AudioDispatcherFactory.fromFloatArray(audioBuffer, samplerate, size, overlap);
        final NFFTEventPointProcessor minMaxProcessor = new NFFTEventPointProcessor(size,overlap,samplerate);
        d.addAudioProcessor(minMaxProcessor);
        d.run();
        double queryDuration = d.secondsProcessed();
        List<NFFTFingerprint> fingerprints = new ArrayList<NFFTFingerprint>(minMaxProcessor.getFingerprints());
        handler.handleSerializedFingerprints(PanakoWebserviceClient.serializeFingerprintsToJson(fingerprints),queryDuration,queryOffset);
    } catch (UnsupportedAudioFileException e) {
        LOG.severe("Unsupported audio");
    }
}