从gstreamer元素获取pads会在1.x的gstreamer java上出现错误

Question

我试图从https://opencast.jira.com/secure/attachment/10077/MultipleSinks.java使用gstreamer java 1.x

public static void printPipeline(Pipeline p) {
    List<Element> elements = p.getElements();
    if (elements.size() > 0) {
        Iterator<Element> elemiter = elements.iterator();
        Element e = null;
        while (elemiter.hasNext()) {
            e = (Element) elemiter.next();
            List<Pad> pads = e.getPads();
            if (pads.size() > 0) {
                Iterator<Pad> paditer = pads.iterator();
                Pad pad = null;
                while (paditer.hasNext()) {
                    pad = (Pad) paditer.next();
                    System.out.print(e + " " + pad.getDirection()); 
                    System.out.println("t" + pad.getCaps());
                }
            }
        }
    }
}

上面代码中的p.getElements()给了我：

线程"main"java.lang中出现异常。错误：内存访问无效

Answer 1

我确认这是gstreamer绑定中的一个错误。我在gstreamer java上提交了https://github.com/gstreamer-java/gst1-java-core/issues.