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 NO_LAYER_STACK = 0xFFFFFFFF,
73 const sp<SurfaceFlinger>& flinger,
76 const wp<IBinder>& displayToken,
77 const sp<ANativeWindow>& nativeWindow,
78 const sp<FramebufferSurface>& framebufferSurface,
83 // whether this is a valid object. An invalid DisplayDevice is returned
84 // when an non existing id is requested
87 // isSecure indicates whether this display can be trusted to display
89 bool isSecure() const { return mIsSecure; }
91 // Flip the front and back buffers if the back buffer is "dirty". Might
92 // be instantaneous, might involve copying the frame buffer around.
93 void flip(const Region& dirty) const;
96 int getHeight() const;
97 PixelFormat getFormat() const;
98 uint32_t getFlags() const;
100 EGLSurface getEGLSurface() const;
102 void setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers);
103 const Vector< sp<LayerBase> >& getVisibleLayersSortedByZ() const;
104 bool getSecureLayerVisible() const;
105 Region getDirtyRegion(bool repaintEverything) const;
107 void setLayerStack(uint32_t stack);
108 void setProjection(int orientation, const Rect& viewport, const Rect& frame);
110 int getOrientation() const { return mOrientation; }
111 const Transform& getTransform() const { return mGlobalTransform; }
112 const Rect getViewport() const { return mViewport; }
113 const Rect getFrame() const { return mFrame; }
114 const Rect& getScissor() const { return mScissor; }
115 bool needsFiltering() const { return mNeedsFiltering; }
117 uint32_t getLayerStack() const { return mLayerStack; }
118 int32_t getDisplayType() const { return mType; }
119 int32_t getHwcDisplayId() const { return mHwcDisplayId; }
120 const wp<IBinder>& getDisplayToken() const { return mDisplayToken; }
122 void swapBuffers(HWComposer& hwc) const;
123 status_t compositionComplete() const;
125 // called after h/w composer has completed its set() call
126 void onSwapBuffersCompleted(HWComposer& hwc) const;
128 Rect getBounds() const {
129 return Rect(mDisplayWidth, mDisplayHeight);
131 inline Rect bounds() const { return getBounds(); }
133 void setDisplayName(const String8& displayName);
134 const String8& getDisplayName() const { return mDisplayName; }
136 static EGLBoolean makeCurrent(EGLDisplay dpy,
137 const sp<const DisplayDevice>& hw, EGLContext ctx);
139 static void setViewportAndProjection(const sp<const DisplayDevice>& hw);
141 /* ------------------------------------------------------------------------
142 * blank / unblank management
144 void releaseScreen() const;
145 void acquireScreen() const;
146 bool isScreenAcquired() const;
147 bool canDraw() const;
149 /* ------------------------------------------------------------------------
152 uint32_t getPageFlipCount() const;
153 void dump(String8& result, char* buffer, size_t SIZE) const;
156 void init(EGLConfig config);
159 * Constants, set during initialization
161 sp<SurfaceFlinger> mFlinger;
163 int32_t mHwcDisplayId;
164 wp<IBinder> mDisplayToken;
166 // ANativeWindow this display is rendering into
167 sp<ANativeWindow> mNativeWindow;
169 // set if mNativeWindow is a FramebufferSurface
170 sp<FramebufferSurface> mFramebufferSurface;
179 mutable uint32_t mPageFlipCount;
180 String8 mDisplayName;
184 * Can only accessed from the main thread, these members
185 * don't need synchronization.
188 // list of visible layers on that display
189 Vector< sp<LayerBase> > mVisibleLayersSortedByZ;
191 // Whether we have a visible secure layer on this display
192 bool mSecureLayerVisible;
194 // Whether the screen is blanked;
195 mutable int mScreenAcquired;
201 static status_t orientationToTransfrom(int orientation,
202 int w, int h, Transform* tr);
204 uint32_t mLayerStack;
206 // user-provided visible area of the layer stack
208 // user-provided rectangle where mViewport gets mapped to
210 // pre-computed scissor to apply to the display
212 Transform mGlobalTransform;
213 bool mNeedsFiltering;
216 }; // namespace android
218 #endif // ANDROID_DISPLAY_DEVICE_H