1 /*
2  * Copyright (C) 2012 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_CLIENT_H
18 #define ANDROID_SF_CLIENT_H
19 
20 #include <stdint.h>
21 #include <sys/types.h>
22 
23 #include <utils/Errors.h>
24 #include <utils/KeyedVector.h>
25 #include <utils/Mutex.h>
26 
27 #include <gui/ISurfaceComposerClient.h>
28 
29 namespace android {
30 
31 // ---------------------------------------------------------------------------
32 
33 class Layer;
34 class SurfaceFlinger;
35 
36 // ---------------------------------------------------------------------------
37 
38 class Client : public BnSurfaceComposerClient
39 {
40 public:
41     explicit Client(const sp<SurfaceFlinger>& flinger);
42     Client(const sp<SurfaceFlinger>& flinger, const sp<Layer>& parentLayer);
43     ~Client();
44 
45     status_t initCheck() const;
46 
47     // protected by SurfaceFlinger::mStateLock
48     void attachLayer(const sp<IBinder>& handle, const sp<Layer>& layer);
49 
50     void detachLayer(const Layer* layer);
51 
52     sp<Layer> getLayerUser(const sp<IBinder>& handle) const;
53 
54     void updateParent(const sp<Layer>& parentLayer);
55 
56 private:
57     // ISurfaceComposerClient interface
58     virtual status_t createSurface(
59             const String8& name,
60             uint32_t w, uint32_t h,PixelFormat format, uint32_t flags,
61             const sp<IBinder>& parent, int32_t windowType, int32_t ownerUid,
62             sp<IBinder>* handle,
63             sp<IGraphicBufferProducer>* gbp);
64 
65     virtual status_t destroySurface(const sp<IBinder>& handle);
66 
67     virtual status_t clearLayerFrameStats(const sp<IBinder>& handle) const;
68 
69     virtual status_t getLayerFrameStats(const sp<IBinder>& handle, FrameStats* outStats) const;
70 
71     virtual status_t onTransact(
72         uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags);
73 
74     sp<Layer> getParentLayer(bool* outParentDied = nullptr) const;
75 
76     // constant
77     sp<SurfaceFlinger> mFlinger;
78 
79     // protected by mLock
80     DefaultKeyedVector< wp<IBinder>, wp<Layer> > mLayers;
81     wp<Layer> mParentLayer;
82 
83     // thread-safe
84     mutable Mutex mLock;
85 };
86 
87 // ---------------------------------------------------------------------------
88 }; // namespace android
89 
90 #endif // ANDROID_SF_CLIENT_H
91