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,
70 DisplayType type, const wp<IBinder>& displayToken,
71 const sp<ANativeWindow>& nativeWindow,
72 const sp<FramebufferSurface>& framebufferSurface,
77 // whether this is a valid object. An invalid DisplayDevice is returned
78 // when an non existing id is requested
81 // Flip the front and back buffers if the back buffer is "dirty". Might
82 // be instantaneous, might involve copying the frame buffer around.
83 void flip(const Region& dirty) const;
86 int getHeight() const;
87 PixelFormat getFormat() const;
88 uint32_t getFlags() const;
90 EGLSurface getEGLSurface() const;
92 void setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers);
93 const Vector< sp<LayerBase> >& getVisibleLayersSortedByZ() const;
94 bool getSecureLayerVisible() const;
95 Region getDirtyRegion(bool repaintEverything) const;
97 void setLayerStack(uint32_t stack);
98 void setProjection(int orientation, const Rect& viewport, const Rect& frame);
100 int getOrientation() const { return mOrientation; }
101 const Transform& getTransform() const { return mGlobalTransform; }
102 const Rect& getViewport() const { return mViewport; }
103 const Rect& getFrame() const { return mFrame; }
104 bool needsFiltering() const { return mNeedsFiltering; }
106 uint32_t getLayerStack() const { return mLayerStack; }
107 int32_t getDisplayType() const { return mType; }
108 int32_t getHwcDisplayId() const { return mHwcDisplayId; }
109 const wp<IBinder>& getDisplayToken() const { return mDisplayToken; }
111 void swapBuffers(HWComposer& hwc) const;
112 status_t compositionComplete() const;
114 // called after h/w composer has completed its set() call
115 void onSwapBuffersCompleted(HWComposer& hwc) const;
117 Rect getBounds() const {
118 return Rect(mDisplayWidth, mDisplayHeight);
120 inline Rect bounds() const { return getBounds(); }
122 void setDisplayName(const String8& displayName);
123 const String8& getDisplayName() const { return mDisplayName; }
125 static EGLBoolean makeCurrent(EGLDisplay dpy,
126 const sp<const DisplayDevice>& hw, EGLContext ctx);
128 /* ------------------------------------------------------------------------
129 * blank / unblank management
131 void releaseScreen() const;
132 void acquireScreen() const;
133 bool isScreenAcquired() const;
134 bool canDraw() const;
136 /* ------------------------------------------------------------------------
139 uint32_t getPageFlipCount() const;
140 void dump(String8& result, char* buffer, size_t SIZE) const;
143 void init(EGLConfig config);
146 * Constants, set during initialization
148 sp<SurfaceFlinger> mFlinger;
150 int32_t mHwcDisplayId;
151 wp<IBinder> mDisplayToken;
153 // ANativeWindow this display is rendering into
154 sp<ANativeWindow> mNativeWindow;
156 // set if mNativeWindow is a FramebufferSurface
157 sp<FramebufferSurface> mFramebufferSurface;
166 mutable uint32_t mPageFlipCount;
167 String8 mDisplayName;
170 * Can only accessed from the main thread, these members
171 * don't need synchronization.
174 // list of visible layers on that display
175 Vector< sp<LayerBase> > mVisibleLayersSortedByZ;
177 // Whether we have a visible secure layer on this display
178 bool mSecureLayerVisible;
180 // Whether the screen is blanked;
181 mutable int mScreenAcquired;
187 static status_t orientationToTransfrom(int orientation,
188 int w, int h, Transform* tr);
190 void updateGeometryTransform();
192 uint32_t mLayerStack;
196 Transform mGlobalTransform;
197 bool mNeedsFiltering;
200 }; // namespace android
202 #endif // ANDROID_DISPLAY_DEVICE_H