LayerState.h revision 3165cc21cfea781988407b19bd83292b19f05f55 
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/ISurface.h>
28
29namespace android {
30
31class Parcel;
32class ISurfaceComposerClient;
33
34struct layer_state_t {
35
36
37    enum {
38        eLayerHidden        = 0x01,
39    };
40
41    enum {
42        ePositionChanged            = 0x00000001,
43        eLayerChanged               = 0x00000002,
44        eSizeChanged                = 0x00000004,
45        eAlphaChanged               = 0x00000008,
46        eMatrixChanged              = 0x00000010,
47        eTransparentRegionChanged   = 0x00000020,
48        eVisibilityChanged          = 0x00000040,
49        eLayerStackChanged          = 0x00000080,
50        eCropChanged                = 0x00000100,
51    };
52
53    layer_state_t()
54        :   surface(0), what(0),
55            x(0), y(0), z(0), w(0), h(0), layerStack(0),
56            alpha(0), flags(0), mask(0),
57            reserved(0)
58    {
59        matrix.dsdx = matrix.dtdy = 1.0f;
60        matrix.dsdy = matrix.dtdx = 0.0f;
61        crop.makeInvalid();
62    }
63
64    status_t    write(Parcel& output) const;
65    status_t    read(const Parcel& input);
66
67            struct matrix22_t {
68                float   dsdx;
69                float   dtdx;
70                float   dsdy;
71                float   dtdy;
72            };
73            SurfaceID       surface;
74            uint32_t        what;
75            float           x;
76            float           y;
77            uint32_t        z;
78            uint32_t        w;
79            uint32_t        h;
80            uint32_t        layerStack;
81            float           alpha;
82            uint8_t         flags;
83            uint8_t         mask;
84            uint8_t         reserved;
85            matrix22_t      matrix;
86            Rect            crop;
87            // non POD must be last. see write/read
88            Region          transparentRegion;
89};
90
91struct ComposerState {
92    sp<ISurfaceComposerClient> client;
93    layer_state_t state;
94    status_t    write(Parcel& output) const;
95    status_t    read(const Parcel& input);
96};
97
98struct DisplayState {
99
100    enum {
101        eOrientationDefault     = 0,
102        eOrientation90          = 1,
103        eOrientation180         = 2,
104        eOrientation270         = 3,
105        eOrientationUnchanged   = 4,
106        eOrientationSwapMask    = 0x01
107    };
108
109    int32_t             displayId;
110    sp<ISurfaceTexture> surface;
111    uint32_t            layerStack;
112    uint32_t            orientation;
113    Rect                viewport;
114    Rect                frame;
115    status_t    write(Parcel& output) const;
116    status_t    read(const Parcel& input);
117};
118
119}; // namespace android
120
121#endif // ANDROID_SF_LAYER_STATE_H
122
123