LayerState.h revision 90ac799241f077a7b7e6c1875fd933864c8dd2a7 
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 <gui/ISurface.h>
27
28namespace android {
29
30class Parcel;
31class ISurfaceComposerClient;
32
33struct layer_state_t {
34
35    layer_state_t()
36        :   surface(0), what(0),
37            x(0), y(0), z(0), w(0), h(0),
38            alpha(0), tint(0), flags(0), mask(0),
39            reserved(0)
40    {
41        matrix.dsdx = matrix.dtdy = 1.0f;
42        matrix.dsdy = matrix.dtdx = 0.0f;
43    }
44
45    status_t    write(Parcel& output) const;
46    status_t    read(const Parcel& input);
47
48            struct matrix22_t {
49                float   dsdx;
50                float   dtdx;
51                float   dsdy;
52                float   dtdy;
53            };
54            SurfaceID       surface;
55            uint32_t        what;
56            float           x;
57            float           y;
58            uint32_t        z;
59            uint32_t        w;
60            uint32_t        h;
61            float           alpha;
62            uint32_t        tint;
63            uint8_t         flags;
64            uint8_t         mask;
65            uint8_t         reserved;
66            matrix22_t      matrix;
67            // non POD must be last. see write/read
68            Region          transparentRegion;
69};
70
71struct ComposerState {
72    sp<ISurfaceComposerClient> client;
73    layer_state_t state;
74    status_t    write(Parcel& output) const;
75    status_t    read(const Parcel& input);
76};
77
78}; // namespace android
79
80#endif // ANDROID_SF_LAYER_STATE_H
81
82