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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 
     27 #include <surfaceflinger/ISurface.h>
     28 
     29 namespace android {
     30 
     31 class Parcel;
     32 class ISurfaceComposerClient;
     33 
     34 struct layer_state_t {
     35 
     36     layer_state_t()
     37         :   surface(0), what(0),
     38             x(0), y(0), z(0), w(0), h(0),
     39             alpha(0), tint(0), flags(0), mask(0),
     40             reserved(0)
     41     {
     42         matrix.dsdx = matrix.dtdy = 1.0f;
     43         matrix.dsdy = matrix.dtdx = 0.0f;
     44     }
     45 
     46     status_t    write(Parcel& output) const;
     47     status_t    read(const Parcel& input);
     48 
     49             struct matrix22_t {
     50                 float   dsdx;
     51                 float   dtdx;
     52                 float   dsdy;
     53                 float   dtdy;
     54             };
     55             SurfaceID       surface;
     56             uint32_t        what;
     57             float           x;
     58             float           y;
     59             uint32_t        z;
     60             uint32_t        w;
     61             uint32_t        h;
     62             float           alpha;
     63             uint32_t        tint;
     64             uint8_t         flags;
     65             uint8_t         mask;
     66             uint8_t         reserved;
     67             matrix22_t      matrix;
     68             // non POD must be last. see write/read
     69             Region          transparentRegion;
     70 };
     71 
     72 struct ComposerState {
     73     sp<ISurfaceComposerClient> client;
     74     layer_state_t state;
     75     status_t    write(Parcel& output) const;
     76     status_t    read(const Parcel& input);
     77 };
     78 
     79 }; // namespace android
     80 
     81 #endif // ANDROID_SF_LAYER_STATE_H
     82 
     83