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,
51 public SurfaceTexture::FrameAvailableListener
54 Layer(SurfaceFlinger* flinger, const sp<Client>& client);
57 virtual const char* getTypeId() const { return "Layer"; }
59 // the this layer's size and format
60 status_t setBuffers(uint32_t w, uint32_t h,
61 PixelFormat format, uint32_t flags=0);
63 bool isFixedSize() const;
65 // LayerBase interface
66 virtual void setGeometry(const sp<const DisplayDevice>& hw,
67 HWComposer::HWCLayerInterface& layer);
68 virtual void setPerFrameData(const sp<const DisplayDevice>& hw,
69 HWComposer::HWCLayerInterface& layer);
70 virtual void setAcquireFence(const sp<const DisplayDevice>& hw,
71 HWComposer::HWCLayerInterface& layer);
72 virtual void onLayerDisplayed(const sp<const DisplayDevice>& hw,
73 HWComposer::HWCLayerInterface* layer);
74 virtual bool onPreComposition();
75 virtual void onPostComposition();
77 virtual void onDraw(const sp<const DisplayDevice>& hw, const Region& clip) const;
78 virtual uint32_t doTransaction(uint32_t transactionFlags);
79 virtual Region latchBuffer(bool& recomputeVisibleRegions);
80 virtual bool isOpaque() const;
81 virtual bool isSecure() const { return mSecure; }
82 virtual bool isProtected() const;
83 virtual void onRemoved();
84 virtual sp<Layer> getLayer() const { return const_cast<Layer*>(this); }
85 virtual void setName(const String8& name);
86 virtual bool isVisible() const;
88 // LayerBaseClient interface
89 virtual wp<IBinder> getSurfaceTextureBinder() const;
92 inline const sp<GraphicBuffer>& getActiveBuffer() const { return mActiveBuffer; }
94 // Updates the transform hint in our SurfaceTexture to match
95 // the current orientation of the default display device.
96 virtual void updateTransformHint() const;
99 virtual void onFirstRef();
100 virtual void dump(String8& result, char* scratch, size_t size) const;
101 virtual void dumpStats(String8& result, char* buffer, size_t SIZE) const;
102 virtual void clearStats();
105 friend class SurfaceTextureLayer;
106 virtual sp<ISurface> createSurface();
107 uint32_t getEffectiveUsage(uint32_t usage) const;
108 bool isCropped() const;
109 Rect computeBufferCrop() const;
110 static bool getOpacityForFormat(uint32_t format);
112 // Interface implementation for SurfaceTexture::FrameAvailableListener
113 virtual void onFrameAvailable();
115 // -----------------------------------------------------------------------
118 sp<SurfaceTexture> mSurfaceTexture;
122 volatile int32_t mQueuedFrames;
125 sp<GraphicBuffer> mActiveBuffer;
127 uint32_t mCurrentTransform;
128 uint32_t mCurrentScalingMode;
129 bool mCurrentOpacity;
130 bool mRefreshPending;
131 bool mFrameLatencyNeeded;
132 int mFrameLatencyOffset;
135 Statistics() : timestamp(0), set(0), vsync(0) { }
136 nsecs_t timestamp; // buffer timestamp
137 nsecs_t set; // buffer displayed timestamp
138 nsecs_t vsync; // vsync immediately before set
141 // protected by mLock
142 Statistics mFrameStats[128];
146 const GLExtensions& mGLExtensions;
149 // page-flip thread (currently main thread)
150 bool mSecure; // no screenshots
151 bool mProtectedByApp; // application requires protected path to external sink
154 // ---------------------------------------------------------------------------
156 }; // namespace android
158 #endif // ANDROID_LAYER_H