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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef DRAWFRAMETASK_H
#define DRAWFRAMETASK_H
#include <vector>
#include <utils/Condition.h>
#include <utils/Mutex.h>
#include <utils/StrongPointer.h>
#include "RenderTask.h"
#include "../Rect.h"
#include "../FrameInfo.h"
#include "../TreeInfo.h"
namespace android {
namespace uirenderer {
class DeferredLayerUpdater;
class DisplayList;
class RenderNode;
namespace renderthread {
class CanvasContext;
class RenderThread;
namespace SyncResult {
enum {
OK = 0,
UIRedrawRequired = 1 << 0,
LostSurfaceRewardIfFound = 1 << 1,
ContextIsStopped = 1 << 2,
};
}
/*
* This is a special Super Task. It is re-used multiple times by RenderProxy,
* and contains state (such as layer updaters & new DisplayLists) that is
* tracked across many frames not just a single frame.
* It is the sync-state task, and will kick off the post-sync draw
*/
class DrawFrameTask : public RenderTask {
public:
DrawFrameTask();
virtual ~DrawFrameTask();
void setContext(RenderThread* thread, CanvasContext* context, RenderNode* targetNode);
void setContentDrawBounds(int left, int top, int right, int bottom) {
mContentDrawBounds.set(left, top, right, bottom);
}
void pushLayerUpdate(DeferredLayerUpdater* layer);
void removeLayerUpdate(DeferredLayerUpdater* layer);
int drawFrame();
int64_t* frameInfo() { return mFrameInfo; }
virtual void run() override;
private:
void postAndWait();
bool syncFrameState(TreeInfo& info);
void unblockUiThread();
Mutex mLock;
Condition mSignal;
RenderThread* mRenderThread;
CanvasContext* mContext;
RenderNode* mTargetNode = nullptr;
Rect mContentDrawBounds;
/*********************************************
* Single frame data
*********************************************/
std::vector< sp<DeferredLayerUpdater> > mLayers;
int mSyncResult;
int64_t mSyncQueued;
int64_t mFrameInfo[UI_THREAD_FRAME_INFO_SIZE];
};
} /* namespace renderthread */
} /* namespace uirenderer */
} /* namespace android */
#endif /* DRAWFRAMETASK_H */
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