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_DISPLAY_DEVICE_H
18 #define ANDROID_DISPLAY_DEVICE_H
22 #include <ui/PixelFormat.h>
23 #include <ui/Region.h>
26 #include <EGL/eglext.h>
28 #include <utils/Mutex.h>
29 #include <utils/Timers.h>
31 #include <hardware/hwcomposer_defs.h>
33 #include "Transform.h"
40 class FramebufferSurface;
45 class DisplayDevice : public LightRefBase<DisplayDevice>
48 // region in layer-stack space
49 mutable Region dirtyRegion;
50 // region in screen space
51 mutable Region swapRegion;
52 // region in screen space
53 Region undefinedRegion;
56 DISPLAY_ID_INVALID = -1,
57 DISPLAY_PRIMARY = HWC_DISPLAY_PRIMARY,
58 DISPLAY_EXTERNAL = HWC_DISPLAY_EXTERNAL,
59 NUM_DISPLAY_TYPES = HWC_NUM_DISPLAY_TYPES,
60 DISPLAY_VIRTUAL = HWC_NUM_DISPLAY_TYPES
64 PARTIAL_UPDATES = 0x00020000, // video driver feature
65 SWAP_RECTANGLE = 0x00080000,
69 const sp<SurfaceFlinger>& flinger,
72 const wp<IBinder>& displayToken,
73 const sp<ANativeWindow>& nativeWindow,
74 const sp<FramebufferSurface>& framebufferSurface,
79 // whether this is a valid object. An invalid DisplayDevice is returned
80 // when an non existing id is requested
83 // isSecure indicates whether this display can be trusted to display
85 bool isSecure() const { return mIsSecure; }
87 // Flip the front and back buffers if the back buffer is "dirty". Might
88 // be instantaneous, might involve copying the frame buffer around.
89 void flip(const Region& dirty) const;
92 int getHeight() const;
93 PixelFormat getFormat() const;
94 uint32_t getFlags() const;
96 EGLSurface getEGLSurface() const;
98 void setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers);
99 const Vector< sp<LayerBase> >& getVisibleLayersSortedByZ() const;
100 bool getSecureLayerVisible() const;
101 Region getDirtyRegion(bool repaintEverything) const;
103 void setLayerStack(uint32_t stack);
104 void setProjection(int orientation, const Rect& viewport, const Rect& frame);
106 int getOrientation() const { return mOrientation; }
107 const Transform& getTransform() const { return mGlobalTransform; }
108 const Rect& getViewport() const { return mViewport; }
109 const Rect& getFrame() const { return mFrame; }
110 bool needsFiltering() const { return mNeedsFiltering; }
112 uint32_t getLayerStack() const { return mLayerStack; }
113 int32_t getDisplayType() const { return mType; }
114 int32_t getHwcDisplayId() const { return mHwcDisplayId; }
115 const wp<IBinder>& getDisplayToken() const { return mDisplayToken; }
117 void swapBuffers(HWComposer& hwc) const;
118 status_t compositionComplete() const;
120 // called after h/w composer has completed its set() call
121 void onSwapBuffersCompleted(HWComposer& hwc) const;
123 Rect getBounds() const {
124 return Rect(mDisplayWidth, mDisplayHeight);
126 inline Rect bounds() const { return getBounds(); }
128 void setDisplayName(const String8& displayName);
129 const String8& getDisplayName() const { return mDisplayName; }
131 static EGLBoolean makeCurrent(EGLDisplay dpy,
132 const sp<const DisplayDevice>& hw, EGLContext ctx);
134 static void setViewportAndProjection(const sp<const DisplayDevice>& hw);
136 /* ------------------------------------------------------------------------
137 * blank / unblank management
139 void releaseScreen() const;
140 void acquireScreen() const;
141 bool isScreenAcquired() const;
142 bool canDraw() const;
144 /* ------------------------------------------------------------------------
147 uint32_t getPageFlipCount() const;
148 void dump(String8& result, char* buffer, size_t SIZE) const;
151 void init(EGLConfig config);
154 * Constants, set during initialization
156 sp<SurfaceFlinger> mFlinger;
158 int32_t mHwcDisplayId;
159 wp<IBinder> mDisplayToken;
161 // ANativeWindow this display is rendering into
162 sp<ANativeWindow> mNativeWindow;
164 // set if mNativeWindow is a FramebufferSurface
165 sp<FramebufferSurface> mFramebufferSurface;
174 mutable uint32_t mPageFlipCount;
175 String8 mDisplayName;
179 * Can only accessed from the main thread, these members
180 * don't need synchronization.
183 // list of visible layers on that display
184 Vector< sp<LayerBase> > mVisibleLayersSortedByZ;
186 // Whether we have a visible secure layer on this display
187 bool mSecureLayerVisible;
189 // Whether the screen is blanked;
190 mutable int mScreenAcquired;
196 static status_t orientationToTransfrom(int orientation,
197 int w, int h, Transform* tr);
199 void updateGeometryTransform();
201 uint32_t mLayerStack;
205 Transform mGlobalTransform;
206 bool mNeedsFiltering;
209 }; // namespace android
211 #endif // ANDROID_DISPLAY_DEVICE_H