1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ANDROID_LAYER_BLUR_H
18#define ANDROID_LAYER_BLUR_H
19
20#include <stdint.h>
21#include <sys/types.h>
22
23#include <ui/Region.h>
24
25#include "LayerBase.h"
26
27namespace android {
28
29// ---------------------------------------------------------------------------
30
31class LayerBlur : public LayerBaseClient
32{
33public:
34    static const uint32_t typeInfo;
35    static const char* const typeID;
36    virtual char const* getTypeID() const { return typeID; }
37    virtual uint32_t getTypeInfo() const { return typeInfo; }
38
39                LayerBlur(SurfaceFlinger* flinger, DisplayID display,
40                        const sp<Client>& client, int32_t i);
41        virtual ~LayerBlur();
42
43    virtual void onDraw(const Region& clip) const;
44    virtual bool needsBlending() const  { return true; }
45    virtual bool isSecure() const       { return false; }
46
47    virtual uint32_t doTransaction(uint32_t flags);
48    virtual void setVisibleRegion(const Region& visibleRegion);
49    virtual void unlockPageFlip(const Transform& planeTransform, Region& outDirtyRegion);
50
51private:
52            bool    mCacheDirty;
53    mutable bool    mRefreshCache;
54    mutable bool    mAutoRefreshPending;
55            nsecs_t mCacheAge;
56    mutable GLuint  mTextureName;
57    mutable GLfloat mWidthScale;
58    mutable GLfloat mHeightScale;
59    mutable GLfloat mYOffset;
60    mutable GLint   mReadFormat;
61    mutable GLint   mReadType;
62    mutable uint32_t mBlurFormat;
63};
64
65// ---------------------------------------------------------------------------
66
67}; // namespace android
68
69#endif // ANDROID_LAYER_BLUR_H
70