@Override
    public void open(long offset) throws ProxyCacheException {
        arrayInputStream = new ByteArrayInputStream(data);
        arrayInputStream.skip(offset);
    }
Simple memory based {@link Source} implementation.

@author Alexey Danilov (danikula@gmail.com).
dkplayer-videocache/src/main/java/com/danikula/videocache/ByteArraySource.java