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_H
18#define ANDROID_LAYER_H
19
20#include <stdint.h>
21#include <sys/types.h>
22
23#include <ui/PixelFormat.h>
24
25#include <private/ui/SharedState.h>
26#include <private/ui/LayerState.h>
27
28#include <pixelflinger/pixelflinger.h>
29
30#include "LayerBitmap.h"
31#include "LayerBase.h"
32#include "Transform.h"
33
34namespace android {
35
36// ---------------------------------------------------------------------------
37
38class Client;
39class LayerBitmap;
40class MemoryDealer;
41class FreezeLock;
42
43// ---------------------------------------------------------------------------
44
45class Layer : public LayerBaseClient
46{
47public:
48    static const uint32_t typeInfo;
49    static const char* const typeID;
50    virtual char const* getTypeID() const { return typeID; }
51    virtual uint32_t getTypeInfo() const { return typeInfo; }
52
53                 Layer(SurfaceFlinger* flinger, DisplayID display,
54                         Client* c, int32_t i);
55
56        virtual ~Layer();
57
58    inline PixelFormat pixelFormat() const {
59        return frontBuffer().pixelFormat();
60    }
61
62    status_t setBuffers(    Client* client,
63                            uint32_t w, uint32_t h,
64                            PixelFormat format, uint32_t flags=0);
65
66    virtual void onDraw(const Region& clip) const;
67    virtual void initStates(uint32_t w, uint32_t h, uint32_t flags);
68    virtual void setSizeChanged(uint32_t w, uint32_t h);
69    virtual uint32_t doTransaction(uint32_t transactionFlags);
70    virtual Point getPhysicalSize() const;
71    virtual void lockPageFlip(bool& recomputeVisibleRegions);
72    virtual void unlockPageFlip(const Transform& planeTransform, Region& outDirtyRegion);
73    virtual void finishPageFlip();
74    virtual bool needsBlending() const      { return mNeedsBlending; }
75    virtual bool isSecure() const           { return mSecure; }
76    virtual GLuint getTextureName() const   { return mTextureName; }
77    virtual sp<Surface> getSurface() const;
78
79    const LayerBitmap& getBuffer(int i) const { return mBuffers[i]; }
80          LayerBitmap& getBuffer(int i)       { return mBuffers[i]; }
81
82    // only for debugging
83    const sp<FreezeLock>&  getFreezeLock() const { return mFreezeLock; }
84
85private:
86    inline const LayerBitmap&
87            frontBuffer() const { return getBuffer(mFrontBufferIndex); }
88    inline LayerBitmap&
89            frontBuffer()       { return getBuffer(mFrontBufferIndex); }
90    inline const LayerBitmap&
91            backBuffer() const  { return getBuffer(1-mFrontBufferIndex); }
92    inline LayerBitmap&
93            backBuffer()        { return getBuffer(1-mFrontBufferIndex); }
94
95    void reloadTexture(const Region& dirty);
96
97    status_t resize(int32_t index, uint32_t w, uint32_t h, const char* what);
98    Region post(uint32_t* oldState, bool& recomputeVisibleRegions);
99    status_t reallocateBuffer(int32_t index, uint32_t w, uint32_t h);
100
101    sp<Surface>             mSurface;
102
103            bool            mSecure;
104            LayerBitmap     mBuffers[2];
105            int32_t         mFrontBufferIndex;
106            bool            mNeedsBlending;
107            bool            mResizeTransactionDone;
108            Region          mPostedDirtyRegion;
109            sp<FreezeLock>  mFreezeLock;
110
111            GLuint          mTextureName;
112            GLuint          mTextureWidth;
113            GLuint          mTextureHeight;
114};
115
116// ---------------------------------------------------------------------------
117
118}; // namespace android
119
120#endif // ANDROID_LAYER_H
121