1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 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 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 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. 15 */ 16 17 #ifndef ANDROID_GUI_SURFACE_CONTROL_H 18 #define ANDROID_GUI_SURFACE_CONTROL_H 19 20 #include <stdint.h> 21 #include <sys/types.h> 22 23 #include <utils/KeyedVector.h> 24 #include <utils/RefBase.h> 25 #include <utils/threads.h> 26 27 #include <ui/FrameStats.h> 28 #include <ui/PixelFormat.h> 29 #include <ui/Region.h> 30 31 #include <gui/ISurfaceComposerClient.h> 32 33 namespace android { 34 35 // --------------------------------------------------------------------------- 36 37 class IGraphicBufferProducer; 38 class Surface; 39 class SurfaceComposerClient; 40 41 // --------------------------------------------------------------------------- 42 43 class SurfaceControl : public RefBase 44 { 45 public: isValid(const sp<SurfaceControl> & surface)46 static bool isValid(const sp<SurfaceControl>& surface) { 47 return (surface != 0) && surface->isValid(); 48 } 49 isValid()50 bool isValid() { 51 return mHandle!=0 && mClient!=0; 52 } 53 54 static bool isSameSurface( 55 const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs); 56 57 // release surface data from java 58 void clear(); 59 60 // disconnect any api that's connected 61 void disconnect(); 62 63 status_t setLayerStack(uint32_t layerStack); 64 status_t setLayer(uint32_t layer); 65 status_t setPosition(float x, float y); 66 status_t setSize(uint32_t w, uint32_t h); 67 status_t hide(); 68 status_t show(); 69 status_t setFlags(uint32_t flags, uint32_t mask); 70 status_t setTransparentRegionHint(const Region& transparent); 71 status_t setAlpha(float alpha=1.0f); 72 status_t setMatrix(float dsdx, float dtdx, float dsdy, float dtdy); 73 status_t setCrop(const Rect& crop); 74 status_t setFinalCrop(const Rect& crop); 75 76 // If the size changes in this transaction, all geometry updates specified 77 // in this transaction will not complete until a buffer of the new size 78 // arrives. As some elements normally apply immediately, this enables 79 // freezing the total geometry of a surface until a resize is completed. 80 status_t setGeometryAppliesWithResize(); 81 82 // Defers applying any changes made in this transaction until the Layer 83 // identified by handle reaches the given frameNumber 84 status_t deferTransactionUntil(sp<IBinder> handle, uint64_t frameNumber); 85 86 // Set an override scaling mode as documented in <system/window.h> 87 // the override scaling mode will take precedence over any client 88 // specified scaling mode. -1 will clear the override scaling mode. 89 status_t setOverrideScalingMode(int32_t overrideScalingMode); 90 91 static status_t writeSurfaceToParcel( 92 const sp<SurfaceControl>& control, Parcel* parcel); 93 94 sp<Surface> getSurface() const; 95 sp<IBinder> getHandle() const; 96 97 status_t clearLayerFrameStats() const; 98 status_t getLayerFrameStats(FrameStats* outStats) const; 99 100 status_t getTransformToDisplayInverse(bool* outTransformToDisplayInverse) const; 101 102 private: 103 // can't be copied 104 SurfaceControl& operator = (SurfaceControl& rhs); 105 SurfaceControl(const SurfaceControl& rhs); 106 107 friend class SurfaceComposerClient; 108 friend class Surface; 109 110 SurfaceControl( 111 const sp<SurfaceComposerClient>& client, 112 const sp<IBinder>& handle, 113 const sp<IGraphicBufferProducer>& gbp); 114 115 ~SurfaceControl(); 116 117 status_t validate() const; 118 void destroy(); 119 120 sp<SurfaceComposerClient> mClient; 121 sp<IBinder> mHandle; 122 sp<IGraphicBufferProducer> mGraphicBufferProducer; 123 mutable Mutex mLock; 124 mutable sp<Surface> mSurfaceData; 125 }; 126 127 }; // namespace android 128 129 #endif // ANDROID_GUI_SURFACE_CONTROL_H 130