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      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 struct layer_state_t {
     34 
     35 
     36     enum {
     37         eLayerHidden        = 0x01,
     38     };
     39 
     40     enum {
     41         ePositionChanged            = 0x00000001,
     42         eLayerChanged               = 0x00000002,
     43         eSizeChanged                = 0x00000004,
     44         eAlphaChanged               = 0x00000008,
     45         eMatrixChanged              = 0x00000010,
     46         eTransparentRegionChanged   = 0x00000020,
     47         eVisibilityChanged          = 0x00000040,
     48         eLayerStackChanged          = 0x00000080,
     49         eCropChanged                = 0x00000100,
     50     };
     51 
     52     layer_state_t()
     53         :   what(0),
     54             x(0), y(0), z(0), w(0), h(0), layerStack(0),
     55             alpha(0), flags(0), mask(0),
     56             reserved(0)
     57     {
     58         matrix.dsdx = matrix.dtdy = 1.0f;
     59         matrix.dsdy = matrix.dtdx = 0.0f;
     60         crop.makeInvalid();
     61     }
     62 
     63     status_t    write(Parcel& output) const;
     64     status_t    read(const Parcel& input);
     65 
     66             struct matrix22_t {
     67                 float   dsdx;
     68                 float   dtdx;
     69                 float   dsdy;
     70                 float   dtdy;
     71             };
     72             sp<IBinder>     surface;
     73             uint32_t        what;
     74             float           x;
     75             float           y;
     76             uint32_t        z;
     77             uint32_t        w;
     78             uint32_t        h;
     79             uint32_t        layerStack;
     80             float           alpha;
     81             uint8_t         flags;
     82             uint8_t         mask;
     83             uint8_t         reserved;
     84             matrix22_t      matrix;
     85             Rect            crop;
     86             // non POD must be last. see write/read
     87             Region          transparentRegion;
     88 };
     89 
     90 struct ComposerState {
     91     sp<ISurfaceComposerClient> client;
     92     layer_state_t state;
     93     status_t    write(Parcel& output) const;
     94     status_t    read(const Parcel& input);
     95 };
     96 
     97 struct DisplayState {
     98 
     99     enum {
    100         eOrientationDefault     = 0,
    101         eOrientation90          = 1,
    102         eOrientation180         = 2,
    103         eOrientation270         = 3,
    104         eOrientationUnchanged   = 4,
    105         eOrientationSwapMask    = 0x01
    106     };
    107 
    108     enum {
    109         eSurfaceChanged             = 0x01,
    110         eLayerStackChanged          = 0x02,
    111         eDisplayProjectionChanged   = 0x04
    112     };
    113 
    114     uint32_t what;
    115     sp<IBinder> token;
    116     sp<IGraphicBufferProducer> surface;
    117     uint32_t layerStack;
    118     uint32_t orientation;
    119     Rect viewport;
    120     Rect frame;
    121     status_t write(Parcel& output) const;
    122     status_t read(const Parcel& input);
    123 };
    124 
    125 }; // namespace android
    126 
    127 #endif // ANDROID_SF_LAYER_STATE_H
    128 
    129