@Override
 public boolean skipLayout(
     BaseDanmaku danmaku, float fixedTop, int lines, boolean willHit) {
   if (DanmakuFilters.getDefault()
       .filterSecondary(danmaku, lines, 0, mStartTimer, willHit)) {
     danmaku.setVisibility(false);
     return true;
   }
   return false;
 }
  @Override
  public RenderingState draw(IDisplayer disp, IDanmakus danmakus, long startRenderTime) {
    int lastTotalDanmakuCount = mRenderingState.totalDanmakuCount;
    mRenderingState.reset();
    IDanmakuIterator itr = danmakus.iterator();
    int orderInScreen = 0;
    mStartTimer.update(System.currentTimeMillis());
    int sizeInScreen = danmakus.size();
    BaseDanmaku drawItem = null;
    while (itr.hasNext()) {

      drawItem = itr.next();

      if (drawItem.isLate()) {
        break;
      }

      if (!drawItem.hasPassedFilter()) {
        DanmakuFilters.getDefault()
            .filter(drawItem, orderInScreen, sizeInScreen, mStartTimer, false);
      }

      if (drawItem.time < startRenderTime
          || (drawItem.priority == 0 && drawItem.isFiltered())
          || drawItem.isFilteredBy(DanmakuFilters.FILTER_TYPE_OVERLAPPING)
          || drawItem.isFilteredBy(DanmakuFilters.FILTER_TYPE_MAXIMUM_LINES)) {
        continue;
      }

      if (drawItem.getType() == BaseDanmaku.TYPE_SCROLL_RL) {
        // 同屏弹幕密度只对滚动弹幕有效
        orderInScreen++;
      }

      // measure
      if (!drawItem.isMeasured()) {
        drawItem.measure(disp);
      }

      // layout
      DanmakusRetainer.fix(drawItem, disp, mVerifier);

      // draw
      if (!drawItem.isOutside() && drawItem.isShown()) {
        if (drawItem.lines == null && drawItem.getBottom() > disp.getHeight()) {
          continue; // skip bottom outside danmaku
        }
        int renderingType = drawItem.draw(disp);
        if (renderingType == IRenderer.CACHE_RENDERING) {
          mRenderingState.cacheHitCount++;
        } else if (renderingType == IRenderer.TEXT_RENDERING) {
          mRenderingState.cacheMissCount++;
        }
        mRenderingState.addCount(drawItem.getType(), 1);
        mRenderingState.addTotalCount(1);
      }
    }

    mRenderingState.nothingRendered = (mRenderingState.totalDanmakuCount == 0);
    mRenderingState.endTime = drawItem != null ? drawItem.time : RenderingState.UNKNOWN_TIME;
    if (mRenderingState.nothingRendered) {
      mRenderingState.beginTime = RenderingState.UNKNOWN_TIME;
    }
    mRenderingState.incrementCount = mRenderingState.totalDanmakuCount - lastTotalDanmakuCount;
    mRenderingState.consumingTime = mStartTimer.update(System.currentTimeMillis());
    return mRenderingState;
  }
 @Override
 public void release() {
   com.yaowang.danmusimple.library.danmaku.renderer.android.DanmakusRetainer.release();
   DanmakuFilters.getDefault().clear();
 }