AbstractDataLine.java 文件源码

/**
 * This method sets the started state and generates
 * events if it changes.
 */
final void setStarted(boolean started) {

    if (Printer.trace) Printer.trace("> AbstractDataLine: setStarted(" + started + ")");

    boolean sendEvents = false;
    long position = getLongFramePosition();

    synchronized (this) {

        //if (Printer.debug) Printer.debug("    AbstractDataLine: setStarted: this.started: " + this.started);
        //if (Printer.debug) Printer.debug("                                  started: " + started);

        if (this.started != started) {
            this.started = started;
            sendEvents = true;
        }
    }

    //if (Printer.debug) Printer.debug("                                  this.started: " + this.started);
    //if (Printer.debug) Printer.debug("                                  sendEvents: " + sendEvents);

    if (sendEvents) {

        if (started) {
            sendEvents(new LineEvent(this, LineEvent.Type.START, position));
        } else {
            sendEvents(new LineEvent(this, LineEvent.Type.STOP, position));
        }
    }
    if (Printer.trace) Printer.trace("< AbstractDataLine: setStarted completed");
}