AudioSystem.java 文件源码

/** Return a Mixer with a given name from a given MixerProvider.
  This method never requires the returned Mixer to do mixing.
  @param mixerName The name of the Mixer to be returned.
  @param provider The MixerProvider to check for Mixers.
  @param info The type of line the returned Mixer is required to
  support.

  @return A Mixer matching the requirements, or null if none is found.
 */
private static Mixer getNamedMixer(String mixerName,
                                   MixerProvider provider,
                                   Line.Info info) {
    Mixer.Info[] infos = provider.getMixerInfo();
    for (int i = 0; i < infos.length; i++) {
        if (infos[i].getName().equals(mixerName)) {
            Mixer mixer = provider.getMixer(infos[i]);
            if (isAppropriateMixer(mixer, info, false)) {
                return mixer;
            }
        }
    }
    return null;
}