Home | History | Annotate | Download | only in gui 
      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 /*
     34  * Used to communicate layer information between SurfaceFlinger and its clients.
     35  */
     36 struct 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 
     95 struct 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 
    102 struct 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