public boolean createCache(BaseDanmaku item) {
// measure
if (!item.isMeasured()) {
item.measure(mDisp);
}
DrawingCache cache = null;
try {
cache = mCachePool.acquire();
cache = DanmakuUtils.buildDanmakuDrawingCache(item, mDisp, cache);
item.cache = cache;
} catch (OutOfMemoryError e) {
// Log.e("cache", "break at error: oom");
if (cache != null) {
mCachePool.release(cache);
}
item.cache = null;
return false;
} catch (Exception e) {
// Log.e("cache", "break at exception:" + e.getMessage());
if (cache != null) {
mCachePool.release(cache);
}
item.cache = null;
return false;
}
return true;
}
private void evictAllNotInScreen(boolean removeAllReferences) {
if (mCaches != null) {
IDanmakuIterator it = mCaches.iterator();
while (it.hasNext()) {
BaseDanmaku danmaku = it.next();
IDrawingCache<?> cache = danmaku.cache;
boolean hasReferences = cache != null && cache.hasReferences();
if (removeAllReferences && hasReferences) {
if (cache.get() != null) {
mRealSize -= cache.size();
cache.destroy();
}
entryRemoved(true, danmaku, null);
it.remove();
continue;
}
if (danmaku.hasDrawingCache() == false || danmaku.isOutside()) {
entryRemoved(true, danmaku, null);
it.remove();
}
}
// mCaches.clear();
}
mRealSize = 0;
}
@Override
public IDanmakus sub(long startTime, long endTime) {
if (mSortType == ST_BY_LIST || items == null || items.size() == 0) {
return null;
}
if (subItems == null) {
subItems = new Danmakus(mDuplicateMergingEnabled);
}
if (startItem == null) {
startItem = createItem("start");
}
if (endItem == null) {
endItem = createItem("end");
}
if (subItems != null) {
long dtime = startTime - startItem.time;
if (dtime >= 0 && endTime <= endItem.time) {
return subItems;
}
}
startItem.time = startTime;
endItem.time = endTime;
subItems.setItems(((SortedSet<BaseDanmaku>) items).subSet(startItem, endItem));
return subItems;
}
public void addDanmaku(BaseDanmaku item) {
if (drawTask != null) {
item.flags = mContext.mGlobalFlagValues;
item.setTimer(timer);
drawTask.addDanmaku(item);
obtainMessage(NOTIFY_RENDERING).sendToTarget();
}
}
private long clearCache(BaseDanmaku oldValue) {
if (oldValue.cache.hasReferences()) {
oldValue.cache.decreaseReference();
oldValue.cache = null;
return 0;
}
long size = sizeOf(oldValue);
oldValue.cache.destroy();
oldValue.cache = null;
return size;
}
public static void fillText(BaseDanmaku danmaku, String text) {
danmaku.text = text;
if (TextUtils.isEmpty(text) || !text.contains(BaseDanmaku.DANMAKU_BR_CHAR)) {
return;
}
String[] lines = danmaku.text.split(BaseDanmaku.DANMAKU_BR_CHAR, -1);
if (lines.length > 1) {
danmaku.lines = lines;
}
}
@Override
public int compare(BaseDanmaku obj1, BaseDanmaku obj2) {
if (mDuplicateMergingEnable && DanmakuUtils.isDuplicate(obj1, obj2)) {
return 0;
}
int result = Float.compare(obj2.getTop(), obj1.getTop());
if (result != 0) {
return result;
}
return DanmakuUtils.compare(obj1, obj2);
}
@Override
protected void onDanmakuRemoved(BaseDanmaku danmaku) {
super.onDanmakuRemoved(danmaku);
if (danmaku.hasDrawingCache()) {
if (danmaku.cache.hasReferences()) {
danmaku.cache.decreaseReference();
} else {
danmaku.cache.destroy();
}
danmaku.cache = null;
}
}
@Override
public void addDanmaku(BaseDanmaku item) {
if (danmakuList == null) return;
synchronized (danmakuList) {
if (item.isLive) {
removeUnusedLiveDanmakusIn(5);
}
item.setTimer(mTimer);
item.index = danmakuList.size();
danmakuList.addItem(item);
}
}
@Override
public boolean removeItem(BaseDanmaku item) {
if (item == null) {
return false;
}
if (item.isOutside()) {
item.setVisibility(false);
}
if (items.remove(item)) {
mSize--;
return true;
}
return false;
}
protected void removeUnusedLiveDanmakusIn(int msec) {
if (danmakuList == null || danmakuList.isEmpty()) return;
long startTime = System.currentTimeMillis();
IDanmakuIterator it = danmakuList.iterator();
while (it.hasNext()) {
BaseDanmaku danmaku = it.next();
if (danmaku.isLive && danmaku.isTimeOut()) {
it.remove();
}
if (System.currentTimeMillis() - startTime > msec) {
break;
}
}
}
@Override
public void releaseResource(BaseDanmaku danmaku) {
// TODO 重要:清理含有ImageSpan的text中的一些占用内存的资源 例如drawable
if (danmaku.text instanceof Spanned) {
danmaku.text = "";
}
}
protected synchronized void removeUnusedLiveDanmakusIn(int msec) {
if (danmakuList == null || danmakuList.isEmpty()) return;
long startTime = System.currentTimeMillis();
IDanmakuIterator it = danmakuList.iterator();
while (it.hasNext()) {
BaseDanmaku danmaku = it.next();
boolean isTimeout = danmaku.isTimeOut();
if (isTimeout && danmaku.isLive) {
it.remove();
onDanmakuRemoved(danmaku);
}
if (!isTimeout || System.currentTimeMillis() - startTime > msec) {
break;
}
}
}
private final void addDanmakuAndBuildCache(BaseDanmaku danmaku) {
if (danmaku.isTimeOut()
|| danmaku.time
> mCacheTimer.currMillisecond + mContext.mDanmakuFactory.MAX_DANMAKU_DURATION) {
return;
}
if (danmaku.priority == 0 && danmaku.isFiltered()) {
return;
}
if (!danmaku.hasDrawingCache()) {
buildCache(danmaku, true);
}
if (danmaku.isLive) {
mCacheTimer.update(
mTimer.currMillisecond + mContext.mDanmakuFactory.MAX_DANMAKU_DURATION * mScreenSize);
}
}
private Collection<BaseDanmaku> subset(long startTime, long endTime) {
if (mSortType == ST_BY_LIST || items == null || items.size() == 0) {
return null;
}
if (subItems == null) {
subItems = new Danmakus(mDuplicateMergingEnabled);
}
if (startSubItem == null) {
startSubItem = createItem("start");
}
if (endSubItem == null) {
endSubItem = createItem("end");
}
startSubItem.time = startTime;
endSubItem.time = endTime;
return ((SortedSet<BaseDanmaku>) items).subSet(startSubItem, endSubItem);
}
public static void fillLinePathData(
BaseDanmaku item, float[][] points, float scaleX, float scaleY) {
if (item.getType() != BaseDanmaku.TYPE_SPECIAL || points.length == 0 || points[0].length != 2)
return;
for (int i = 0; i < points.length; i++) {
points[i][0] *= scaleX;
points[i][1] *= scaleY;
}
((SpecialDanmaku) item).setLinePathData(points);
}
private boolean push(BaseDanmaku item, int itemSize, boolean forcePush) {
int size = itemSize; // sizeOf(item);
while (mRealSize + size > mMaxSize && mCaches.size() > 0) {
BaseDanmaku oldValue = mCaches.first();
if (oldValue.isTimeOut()) {
entryRemoved(false, oldValue, item);
mCaches.removeItem(oldValue);
} else {
if (forcePush) {
break;
}
return false;
}
}
this.mCaches.addItem(item);
mRealSize += size;
// Log.e("CACHE", "realsize:"+mRealSize + ",size" + size);
return true;
}
private void clearTimeOutCaches(long time) {
IDanmakuIterator it = mCaches.iterator();
while (it.hasNext() && !mEndFlag) {
BaseDanmaku val = it.next();
if (val.isTimeOut()) {
synchronized (mDrawingNotify) {
try {
mDrawingNotify.wait(30);
} catch (InterruptedException e) {
e.printStackTrace();
break;
}
}
entryRemoved(false, val, null);
it.remove();
} else {
break;
}
}
}
private void releaseDanmakuCache(BaseDanmaku item, DrawingCache cache) {
if (cache == null) {
cache = (DrawingCache) item.cache;
}
item.cache = null;
if (cache == null) {
return;
}
cache.destroy();
mCachePool.release(cache);
}
protected void entryRemoved(boolean evicted, BaseDanmaku oldValue, BaseDanmaku newValue) {
if (oldValue.cache != null) {
IDrawingCache<?> cache = oldValue.cache;
long releasedSize = clearCache(oldValue);
if (oldValue.isTimeOut()) {
mContext.getDisplayer().getCacheStuffer().releaseResource(oldValue);
}
if (releasedSize <= 0) return;
mRealSize -= releasedSize;
mCachePool.release((DrawingCache) cache);
}
}
@Override
public void addDanmaku(BaseDanmaku danmaku) {
if (mHandler != null) {
if (danmaku.isLive) {
if (danmaku.isTimeOut()) {
return;
}
mHandler.createCache(danmaku);
} else {
mHandler.obtainMessage(CacheHandler.ADD_DANMAKKU, danmaku).sendToTarget();
}
}
}
private BaseDanmaku findReuseableCache(
BaseDanmaku refDanmaku, boolean strictMode, int maximumTimes) {
IDanmakuIterator it = mCaches.iterator();
int slopPixel = 0;
if (!strictMode) {
slopPixel = mDisp.getSlopPixel() * 2;
}
int count = 0;
while (it.hasNext() && count++ < maximumTimes) { // limit maximum times
BaseDanmaku danmaku = it.next();
if (!danmaku.hasDrawingCache()) {
continue;
}
if (danmaku.paintWidth == refDanmaku.paintWidth
&& danmaku.paintHeight == refDanmaku.paintHeight
&& danmaku.underlineColor == refDanmaku.underlineColor
&& danmaku.borderColor == refDanmaku.borderColor
&& danmaku.textColor == refDanmaku.textColor
&& danmaku.text.equals(refDanmaku.text)) {
return danmaku;
}
if (strictMode) {
continue;
}
if (!danmaku.isTimeOut()) {
break;
}
if (danmaku.cache.hasReferences()) {
continue;
}
float widthGap = danmaku.cache.width() - refDanmaku.paintWidth;
float heightGap = danmaku.cache.height() - refDanmaku.paintHeight;
if (widthGap >= 0 && widthGap <= slopPixel && heightGap >= 0 && heightGap <= slopPixel) {
return danmaku;
}
}
return null;
}
@OnClick(R.id.danmu_add)
void addDanmu() {
i++;
BaseDanmaku danmaku = danmukuContext.mDanmakuFactory.createDanmaku(BaseDanmaku.TYPE_SCROLL_RL);
Log.d("tag", "测试用弹幕 + " + i + "条");
danmaku.text = "测试用弹幕 + " + i + "条";
danmaku.padding = 10;
danmaku.priority = 1; // 1:一定会显示, 一般用于本机发送的弹幕,但会导致行数的限制失效
danmaku.isLive = false;
danmaku.textSize = 20;
danmaku.textColor = Color.WHITE;
danmaku.textShadowColor = 0; // 重要：如果有图文混排，最好不要设置描边(设textShadowColor=0)，否则会进行两次复杂的绘制导致运行效率降低
danmakuView.addDanmaku(danmaku);
}
/**
* Initial translation data of the special danmaku
*
* @param item
* @param dispWidth
* @param dispHeight
* @param beginX
* @param beginY
* @param endX
* @param endY
* @param translationDuration
* @param translationStartDelay
*/
public static void fillTranslationData(
BaseDanmaku item,
float beginX,
float beginY,
float endX,
float endY,
long translationDuration,
long translationStartDelay,
float scaleX,
float scaleY) {
if (item.getType() != BaseDanmaku.TYPE_SPECIAL) return;
((SpecialDanmaku) item)
.setTranslationData(
beginX * scaleX,
beginY * scaleY,
endX * scaleX,
endY * scaleY,
translationDuration,
translationStartDelay);
updateSpecicalDanmakuDuration(item);
}
@Override
public synchronized void addDanmaku(BaseDanmaku item) {
if (danmakuList == null) return;
boolean added = false;
if (item.isLive) {
removeUnusedLiveDanmakusIn(10);
}
item.index = danmakuList.size();
if (mLastBeginMills <= item.time && item.time <= mLastEndMills) {
synchronized (danmakus) {
added = danmakus.addItem(item);
}
} else if (item.isLive) {
mLastBeginMills = mLastEndMills = 0;
}
synchronized (danmakuList) {
added = danmakuList.addItem(item);
}
if (added && mTaskListener != null) {
mTaskListener.onDanmakuAdd(item);
}
}
/**
* Initial alpha data of the special danmaku
*
* @param item
* @param beginAlpha
* @param endAlpha
* @param alphaDuraion
*/
public static void fillAlphaData(
BaseDanmaku item, int beginAlpha, int endAlpha, long alphaDuraion) {
if (item.getType() != BaseDanmaku.TYPE_SPECIAL) return;
((SpecialDanmaku) item).setAlphaData(beginAlpha, endAlpha, alphaDuraion);
updateSpecicalDanmakuDuration(item);
}
public void invalidateDanmaku(BaseDanmaku danmaku) {
if (mHandler != null && danmaku.hasDrawingCache()) {
mHandler.obtainMessage(CacheHandler.REBUILD_CACHE, danmaku).sendToTarget();
}
}
@Override
public void handleMessage(Message msg) {
int what = msg.what;
switch (what) {
case PREPARE:
evictAllNotInScreen();
for (int i = 0; i < 300; i++) {
mCachePool.release(new DrawingCache());
}
case DISPATCH_ACTIONS:
// Log.e(TAG,"dispatch_actions:"+mCacheTimer.currMillisecond+":"+mTimer.currMillisecond);
long delayed = dispatchAction();
if (delayed <= 0) {
delayed = mContext.mDanmakuFactory.MAX_DANMAKU_DURATION / 2;
}
sendEmptyMessageDelayed(DISPATCH_ACTIONS, delayed);
break;
case BUILD_CACHES:
removeMessages(BUILD_CACHES);
boolean repositioned = ((mTaskListener != null && mReadyState == false) || mSeekedFlag);
prepareCaches(repositioned);
if (repositioned) mSeekedFlag = false;
if (mTaskListener != null && mReadyState == false) {
mTaskListener.ready();
mReadyState = true;
}
//
// Log.i(TAG,"BUILD_CACHES:"+mCacheTimer.currMillisecond+":"+mTimer.currMillisecond);
break;
case ADD_DANMAKKU:
BaseDanmaku item = (BaseDanmaku) msg.obj;
addDanmakuAndBuildCache(item);
break;
case REBUILD_CACHE:
Pair<BaseDanmaku, Boolean> pair = (Pair<BaseDanmaku, Boolean>) msg.obj;
if (pair != null) {
BaseDanmaku cacheitem = pair.first;
if (pair.second) {
cacheitem.requestFlags |= BaseDanmaku.FLAG_REQUEST_REMEASURE;
}
cacheitem.requestFlags |= BaseDanmaku.FLAG_REQUEST_INVALIDATE;
if (!pair.second && cacheitem.hasDrawingCache() && !cacheitem.cache.hasReferences()) {
DrawingCache cache =
DanmakuUtils.buildDanmakuDrawingCache(
cacheitem, mDisp, (DrawingCache) cacheitem.cache);
cacheitem.cache = cache;
push(cacheitem, 0, true);
return;
}
if (cacheitem.isLive) {
clearCache(cacheitem);
createCache(cacheitem);
} else {
entryRemoved(true, cacheitem, null);
addDanmakuAndBuildCache(cacheitem);
}
}
break;
case CLEAR_TIMEOUT_CACHES:
clearTimeOutCaches();
break;
case SEEK:
Long seekMills = (Long) msg.obj;
if (seekMills != null) {
mCacheTimer.update(seekMills.longValue());
mSeekedFlag = true;
evictAllNotInScreen();
resume();
}
break;
case QUIT:
removeCallbacksAndMessages(null);
mPause = true;
evictAll();
clearCachePool();
this.getLooper().quit();
break;
case CLEAR_ALL_CACHES:
evictAll();
mCacheTimer.update(
mTimer.currMillisecond - mContext.mDanmakuFactory.MAX_DANMAKU_DURATION);
mSeekedFlag = true;
break;
case CLEAR_OUTSIDE_CACHES:
evictAllNotInScreen(true);
mCacheTimer.update(mTimer.currMillisecond);
break;
case CLEAR_OUTSIDE_CACHES_AND_RESET:
evictAllNotInScreen(true);
mCacheTimer.update(mTimer.currMillisecond);
requestClear();
break;
}
}
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;
}
private byte buildCache(BaseDanmaku item, boolean forceInsert) {
// measure
if (!item.isMeasured()) {
item.measure(mDisp);
}
DrawingCache cache = null;
try {
// try to find reuseable cache
BaseDanmaku danmaku = findReuseableCache(item, true, 20);
if (danmaku != null) {
cache = (DrawingCache) danmaku.cache;
}
if (cache != null) {
cache.increaseReference();
item.cache = cache;
// Log.w("cache", danmaku.text + "DrawingCache hit!!:" + item.paintWidth + "," +
// danmaku.paintWidth);
mCacheManager.push(item, 0, forceInsert);
return RESULT_SUCCESS;
}
// try to find reuseable cache from timeout || no-refrerence caches
danmaku = findReuseableCache(item, false, 50);
if (danmaku != null) {
cache = (DrawingCache) danmaku.cache;
}
if (cache != null) {
danmaku.cache = null;
// Log.e("cache", danmaku.text + "DrawingCache hit!!:" + item.paintWidth + "," +
// danmaku.paintWidth);
cache = DanmakuUtils.buildDanmakuDrawingCache(item, mDisp, cache); // redraw
item.cache = cache;
mCacheManager.push(item, 0, forceInsert);
return RESULT_SUCCESS;
}
// guess cache size
if (!forceInsert) {
int cacheSize =
DanmakuUtils.getCacheSize((int) item.paintWidth, (int) item.paintHeight);
if (mRealSize + cacheSize > mMaxSize) {
// Log.d("cache", "break at MaxSize:"+mMaxSize);
return RESULT_FAILED;
}
}
cache = mCachePool.acquire();
cache = DanmakuUtils.buildDanmakuDrawingCache(item, mDisp, cache);
item.cache = cache;
boolean pushed = mCacheManager.push(item, sizeOf(item), forceInsert);
if (!pushed) {
releaseDanmakuCache(item, cache);
// Log.e("cache", "break at push failed:" + mMaxSize);
}
return pushed ? RESULT_SUCCESS : RESULT_FAILED;
} catch (OutOfMemoryError e) {
// Log.e("cache", "break at error: oom");
releaseDanmakuCache(item, cache);
return RESULT_FAILED;
} catch (Exception e) {
// Log.e("cache", "break at exception:" + e.getMessage());
releaseDanmakuCache(item, cache);
return RESULT_FAILED;
}
}
