private long prepareCaches(boolean repositioned) {
long curr = mCacheTimer.currMillisecond;
long end = curr + mContext.mDanmakuFactory.MAX_DANMAKU_DURATION * mScreenSize;
if (end < mTimer.currMillisecond) {
return 0;
}
long startTime = SystemClock.uptimeMillis();
IDanmakus danmakus = null;
int tryCount = 0;
boolean hasException = false;
do {
try {
danmakus = danmakuList.subnew(curr, end);
} catch (Exception e) {
hasException = true;
SystemClock.sleep(10);
}
} while (++tryCount < 3 && danmakus == null && hasException);
if (danmakus == null) {
mCacheTimer.update(end);
return 0;
}
BaseDanmaku first = danmakus.first();
BaseDanmaku last = danmakus.last();
if (first == null || last == null) {
mCacheTimer.update(end);
return 0;
}
long deltaTime = first.time - mTimer.currMillisecond;
long sleepTime = 30 + 10 * deltaTime / mContext.mDanmakuFactory.MAX_DANMAKU_DURATION;
sleepTime = Math.min(100, sleepTime);
if (repositioned) {
sleepTime = 0;
}
IDanmakuIterator itr = danmakus.iterator();
BaseDanmaku item = null;
long consumingTime = 0;
int orderInScreen = 0;
int currScreenIndex = 0;
int sizeInScreen = danmakus.size();
// String message = "";
while (!mPause && !mCancelFlag) {
boolean hasNext = itr.hasNext();
if (!hasNext) {
// message = "break at not hasNext";
break;
}
item = itr.next();
if (last.time < mTimer.currMillisecond) {
// message = "break at last.time < mTimer.currMillisecond";
break;
}
if (item.hasDrawingCache()) {
continue;
}
if (repositioned == false && (item.isTimeOut() || !item.isOutside())) {
continue;
}
if (!item.hasPassedFilter()) {
mContext.mDanmakuFilters.filter(
item, orderInScreen, sizeInScreen, null, true, mContext);
}
// Log.e("prepareCache", currScreenIndex+","+orderInScreen+"," + item.time+"skip:"+skip);
if (item.priority == 0 && item.isFiltered()) {
continue;
}
if (item.getType() == BaseDanmaku.TYPE_SCROLL_RL) {
// 同屏弹幕密度只对滚动弹幕有效
int screenIndex =
(int) ((item.time - curr) / mContext.mDanmakuFactory.MAX_DANMAKU_DURATION);
if (currScreenIndex == screenIndex) orderInScreen++;
else {
orderInScreen = 0;
currScreenIndex = screenIndex;
}
}
if (!repositioned) {
try {
synchronized (mDrawingNotify) {
mDrawingNotify.wait(sleepTime);
}
} catch (InterruptedException e) {
e.printStackTrace();
break;
}
}
// build cache
if (buildCache(item, false) == RESULT_FAILED) {
// message = "break at build failed";
break;
}
if (!repositioned) {
consumingTime = SystemClock.uptimeMillis() - startTime;
if (consumingTime >= DanmakuFactory.COMMON_DANMAKU_DURATION * mScreenSize) {
// message = "break at consumingTime out:" + consumingTime;
break;
}
}
}
consumingTime = SystemClock.uptimeMillis() - startTime;
if (item != null) {
mCacheTimer.update(item.time);
// Log.i("cache","stop at :"+item.time+","+count+",size:"+danmakus.size()+","+message);
} else {
mCacheTimer.update(end);
}
return consumingTime;
}
