LayerState.h revision 2c5f6d2257075c8b5ced78b07ed8b2c2323f0df2 
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#include <gui/IGraphicBufferProducer.h>
28#include <math/vec3.h>
29
30namespace android {
31
32class Parcel;
33class ISurfaceComposerClient;
34
35/*
36 * Used to communicate layer information between SurfaceFlinger and its clients.
37 */
38struct layer_state_t {
39
40
41    enum {
42        eLayerHidden        = 0x01,     // SURFACE_HIDDEN in SurfaceControl.java
43        eLayerOpaque        = 0x02,     // SURFACE_OPAQUE
44        eLayerSecure        = 0x80,     // SECURE
45    };
46
47    enum {
48        ePositionChanged            = 0x00000001,
49        eLayerChanged               = 0x00000002,
50        eSizeChanged                = 0x00000004,
51        eAlphaChanged               = 0x00000008,
52        eMatrixChanged              = 0x00000010,
53        eTransparentRegionChanged   = 0x00000020,
54        eFlagsChanged               = 0x00000040,
55        eLayerStackChanged          = 0x00000080,
56        eCropChanged                = 0x00000100,
57        eDeferTransaction           = 0x00000200,
58        eFinalCropChanged           = 0x00000400,
59        eOverrideScalingModeChanged = 0x00000800,
60        eGeometryAppliesWithResize  = 0x00001000,
61        eReparentChildren           = 0x00002000,
62        eDetachChildren             = 0x00004000,
63        eRelativeLayerChanged       = 0x00008000,
64        eReparent                   = 0x00010000,
65        eColorChanged               = 0x00020000
66    };
67
68    layer_state_t()
69        :   what(0),
70            x(0), y(0), z(0), w(0), h(0), layerStack(0),
71            alpha(0), flags(0), mask(0),
72            reserved(0), crop(Rect::INVALID_RECT),
73            finalCrop(Rect::INVALID_RECT), frameNumber(0),
74            overrideScalingMode(-1)
75    {
76        matrix.dsdx = matrix.dtdy = 1.0f;
77        matrix.dsdy = matrix.dtdx = 0.0f;
78    }
79
80    void merge(const layer_state_t& other);
81    status_t    write(Parcel& output) const;
82    status_t    read(const Parcel& input);
83
84            struct matrix22_t {
85                float   dsdx{0};
86                float   dtdx{0};
87                float   dtdy{0};
88                float   dsdy{0};
89            };
90            sp<IBinder>     surface;
91            uint32_t        what;
92            float           x;
93            float           y;
94            int32_t         z;
95            uint32_t        w;
96            uint32_t        h;
97            uint32_t        layerStack;
98            float           alpha;
99            uint8_t         flags;
100            uint8_t         mask;
101            uint8_t         reserved;
102            matrix22_t      matrix;
103            Rect            crop;
104            Rect            finalCrop;
105            sp<IBinder>     barrierHandle;
106            sp<IBinder>     reparentHandle;
107            uint64_t        frameNumber;
108            int32_t         overrideScalingMode;
109
110            sp<IGraphicBufferProducer> barrierGbp;
111
112            sp<IBinder>     relativeLayerHandle;
113
114            sp<IBinder>     parentHandleForChild;
115
116            half3           color;
117
118            // non POD must be last. see write/read
119            Region          transparentRegion;
120};
121
122struct ComposerState {
123    sp<ISurfaceComposerClient> client;
124    layer_state_t state;
125    status_t    write(Parcel& output) const;
126    status_t    read(const Parcel& input);
127};
128
129struct DisplayState {
130
131    enum {
132        eOrientationDefault     = 0,
133        eOrientation90          = 1,
134        eOrientation180         = 2,
135        eOrientation270         = 3,
136        eOrientationUnchanged   = 4,
137        eOrientationSwapMask    = 0x01
138    };
139
140    enum {
141        eSurfaceChanged             = 0x01,
142        eLayerStackChanged          = 0x02,
143        eDisplayProjectionChanged   = 0x04,
144        eDisplaySizeChanged         = 0x08
145    };
146
147    DisplayState();
148    void merge(const DisplayState& other);
149
150    uint32_t what;
151    sp<IBinder> token;
152    sp<IGraphicBufferProducer> surface;
153    uint32_t layerStack;
154    uint32_t orientation;
155    Rect viewport;
156    Rect frame;
157    uint32_t width, height;
158    status_t write(Parcel& output) const;
159    status_t read(const Parcel& input);
160};
161
162static inline
163int compare_type(const ComposerState& lhs, const ComposerState& rhs) {
164    if (lhs.client < rhs.client) return -1;
165    if (lhs.client > rhs.client) return 1;
166    if (lhs.state.surface < rhs.state.surface)  return -1;
167    if (lhs.state.surface > rhs.state.surface)  return 1;
168    return 0;
169}
170
171static inline
172int compare_type(const DisplayState& lhs, const DisplayState& rhs) {
173    return compare_type(lhs.token, rhs.token);
174}
175
176}; // namespace android
177
178#endif // ANDROID_SF_LAYER_STATE_H
179
180