LayerState.h revision 1f6078aef71b1d3f080cd565adbec350c71088dd 
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
28namespace android {
29
30class Parcel;
31class ISurfaceComposerClient;
32
33/*
34 * Used to communicate layer information between SurfaceFlinger and its clients.
35 */
36struct 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
57    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
95struct 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
102struct 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