2 * Copyright (C) 2007 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef ANDROID_LAYER_H
18 #define ANDROID_LAYER_H
21 #include <sys/types.h>
23 #include <gui/SurfaceTexture.h>
25 #include <utils/Timers.h>
27 #include <ui/GraphicBuffer.h>
28 #include <ui/PixelFormat.h>
30 #include <gui/ISurfaceComposerClient.h>
33 #include <EGL/eglext.h>
35 #include <GLES/glext.h>
37 #include "LayerBase.h"
38 #include "SurfaceTextureLayer.h"
39 #include "Transform.h"
43 // ---------------------------------------------------------------------------
48 // ---------------------------------------------------------------------------
50 class Layer : public LayerBaseClient
53 Layer(SurfaceFlinger* flinger, DisplayID display,
54 const sp<Client>& client);
58 virtual const char* getTypeId() const { return "Layer"; }
60 // the this layer's size and format
61 status_t setBuffers(uint32_t w, uint32_t h,
62 PixelFormat format, uint32_t flags=0);
64 bool isFixedSize() const;
66 // LayerBase interface
67 virtual void setGeometry(hwc_layer_t* hwcl);
68 virtual void setPerFrameData(hwc_layer_t* hwcl);
69 virtual void onDraw(const Region& clip) const;
70 virtual uint32_t doTransaction(uint32_t transactionFlags);
71 virtual void lockPageFlip(bool& recomputeVisibleRegions);
72 virtual void unlockPageFlip(const Transform& planeTransform, Region& outDirtyRegion);
73 virtual bool isOpaque() const;
74 virtual bool needsDithering() const { return mNeedsDithering; }
75 virtual bool isSecure() const { return mSecure; }
76 virtual bool isProtected() const;
77 virtual void onRemoved();
78 virtual sp<Layer> getLayer() const { return const_cast<Layer*>(this); }
79 virtual void setName(const String8& name);
80 virtual void validateVisibility(const Transform& globalTransform);
82 // LayerBaseClient interface
83 virtual wp<IBinder> getSurfaceTextureBinder() const;
85 virtual void onLayerDisplayed();
86 virtual bool onPreComposition();
89 inline const sp<GraphicBuffer>& getActiveBuffer() const { return mActiveBuffer; }
92 virtual void onFirstRef();
93 virtual void dump(String8& result, char* scratch, size_t size) const;
94 virtual void dumpStats(String8& result, char* buffer, size_t SIZE) const;
95 virtual void clearStats();
98 friend class SurfaceTextureLayer;
100 virtual sp<ISurface> createSurface();
101 uint32_t getEffectiveUsage(uint32_t usage) const;
102 uint32_t getTransformHint() const;
103 bool isCropped() const;
104 static bool getOpacityForFormat(uint32_t format);
106 // -----------------------------------------------------------------------
109 sp<SurfaceTexture> mSurfaceTexture;
113 volatile int32_t mQueuedFrames;
116 sp<GraphicBuffer> mActiveBuffer;
118 uint32_t mCurrentTransform;
119 uint32_t mCurrentScalingMode;
120 bool mCurrentOpacity;
121 bool mRefreshPending;
122 bool mFrameLatencyNeeded;
123 int mFrameLatencyOffset;
126 Statistics() : timestamp(0), set(0), vsync(0) { }
127 nsecs_t timestamp; // buffer timestamp
128 nsecs_t set; // buffer displayed timestamp
129 nsecs_t vsync; // vsync immediately before set
132 // protected by mLock
133 Statistics mFrameStats[128];
137 const GLExtensions& mGLExtensions;
139 bool mNeedsDithering;
141 // page-flip thread (currently main thread)
142 bool mSecure; // no screenshots
143 bool mProtectedByApp; // application requires protected path to external sink
144 Region mPostedDirtyRegion;
147 // ---------------------------------------------------------------------------
149 }; // namespace android
151 #endif // ANDROID_LAYER_H