PortMixer.java 文件源码

private Port.Info getPortInfo(int portIndex, int type) {
    switch (type) {
    case SRC_UNKNOWN:      return new PortInfo(nGetPortName(getID(), portIndex), true);
    case SRC_MICROPHONE:   return Port.Info.MICROPHONE;
    case SRC_LINE_IN:      return Port.Info.LINE_IN;
    case SRC_COMPACT_DISC: return Port.Info.COMPACT_DISC;

    case DST_UNKNOWN:      return new PortInfo(nGetPortName(getID(), portIndex), false);
    case DST_SPEAKER:      return Port.Info.SPEAKER;
    case DST_HEADPHONE:    return Port.Info.HEADPHONE;
    case DST_LINE_OUT:     return Port.Info.LINE_OUT;
    }
    // should never happen...
    if (Printer.debug) Printer.debug("unknown port type: "+type);
    return null;
}