1 /* 2 * Copyright (C) 2008 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_SF_LAYER_STATE_H 18 #define ANDROID_SF_LAYER_STATE_H 19 20 #include <stdint.h> 21 #include <sys/types.h> 22 23 #include <utils/Errors.h> 24 25 #include <ui/Region.h> 26 #include <ui/Rect.h> 27 28 namespace android { 29 30 class Parcel; 31 class ISurfaceComposerClient; 32 33 /* 34 * Used to communicate layer information between SurfaceFlinger and its clients. 35 */ 36 struct layer_state_t { 37 38 39 enum { 40 eLayerHidden = 0x01, // SURFACE_HIDDEN in SurfaceControl.java 41 eLayerOpaque = 0x02, // SURFACE_OPAQUE 42 }; 43 44 enum { 45 ePositionChanged = 0x00000001, 46 eLayerChanged = 0x00000002, 47 eSizeChanged = 0x00000004, 48 eAlphaChanged = 0x00000008, 49 eMatrixChanged = 0x00000010, 50 eTransparentRegionChanged = 0x00000020, 51 eVisibilityChanged = 0x00000040, 52 eLayerStackChanged = 0x00000080, 53 eCropChanged = 0x00000100, 54 eOpacityChanged = 0x00000200, 55 }; 56 layer_state_tlayer_state_t57 layer_state_t() 58 : what(0), 59 x(0), y(0), z(0), w(0), h(0), layerStack(0), 60 alpha(0), flags(0), mask(0), 61 reserved(0) 62 { 63 matrix.dsdx = matrix.dtdy = 1.0f; 64 matrix.dsdy = matrix.dtdx = 0.0f; 65 crop.makeInvalid(); 66 } 67 68 status_t write(Parcel& output) const; 69 status_t read(const Parcel& input); 70 71 struct matrix22_t { 72 float dsdx; 73 float dtdx; 74 float dsdy; 75 float dtdy; 76 }; 77 sp<IBinder> surface; 78 uint32_t what; 79 float x; 80 float y; 81 uint32_t z; 82 uint32_t w; 83 uint32_t h; 84 uint32_t layerStack; 85 float alpha; 86 uint8_t flags; 87 uint8_t mask; 88 uint8_t reserved; 89 matrix22_t matrix; 90 Rect crop; 91 // non POD must be last. see write/read 92 Region transparentRegion; 93 }; 94 95 struct ComposerState { 96 sp<ISurfaceComposerClient> client; 97 layer_state_t state; 98 status_t write(Parcel& output) const; 99 status_t read(const Parcel& input); 100 }; 101 102 struct DisplayState { 103 104 enum { 105 eOrientationDefault = 0, 106 eOrientation90 = 1, 107 eOrientation180 = 2, 108 eOrientation270 = 3, 109 eOrientationUnchanged = 4, 110 eOrientationSwapMask = 0x01 111 }; 112 113 enum { 114 eSurfaceChanged = 0x01, 115 eLayerStackChanged = 0x02, 116 eDisplayProjectionChanged = 0x04, 117 eDisplaySizeChanged = 0x08 118 }; 119 120 uint32_t what; 121 sp<IBinder> token; 122 sp<IGraphicBufferProducer> surface; 123 uint32_t layerStack; 124 uint32_t orientation; 125 Rect viewport; 126 Rect frame; 127 uint32_t width, height; 128 status_t write(Parcel& output) const; 129 status_t read(const Parcel& input); 130 }; 131 132 }; // namespace android 133 134 #endif // ANDROID_SF_LAYER_STATE_H 135 136