SurfaceControl.h revision bbb57f3331c7182399ed82e9c4f93a965677dde3 
1/*
2 * Copyright (C) 2007 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_GUI_SURFACE_CONTROL_H
18#define ANDROID_GUI_SURFACE_CONTROL_H
19
20#include <stdint.h>
21#include <sys/types.h>
22
23#include <utils/KeyedVector.h>
24#include <utils/RefBase.h>
25#include <utils/threads.h>
26
27#include <ui/PixelFormat.h>
28#include <ui/Region.h>
29
30#include <gui/ISurface.h>
31#include <gui/ISurfaceComposerClient.h>
32
33namespace android {
34
35// ---------------------------------------------------------------------------
36
37class IGraphicBufferProducer;
38class Surface;
39class SurfaceComposerClient;
40
41// ---------------------------------------------------------------------------
42
43class SurfaceControl : public RefBase
44{
45public:
46    static bool isValid(const sp<SurfaceControl>& surface) {
47        return (surface != 0) && surface->isValid();
48    }
49    bool isValid() {
50        return mSurface!=0 && mClient!=0;
51    }
52    static bool isSameSurface(
53            const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs);
54
55    // release surface data from java
56    void        clear();
57
58    status_t    setLayerStack(int32_t layerStack);
59    status_t    setLayer(int32_t layer);
60    status_t    setPosition(int32_t x, int32_t y);
61    status_t    setSize(uint32_t w, uint32_t h);
62    status_t    hide();
63    status_t    show();
64    status_t    setFlags(uint32_t flags, uint32_t mask);
65    status_t    setTransparentRegionHint(const Region& transparent);
66    status_t    setAlpha(float alpha=1.0f);
67    status_t    setMatrix(float dsdx, float dtdx, float dsdy, float dtdy);
68    status_t    setCrop(const Rect& crop);
69
70    static status_t writeSurfaceToParcel(
71            const sp<SurfaceControl>& control, Parcel* parcel);
72
73    sp<Surface> getSurface() const;
74
75private:
76    // can't be copied
77    SurfaceControl& operator = (SurfaceControl& rhs);
78    SurfaceControl(const SurfaceControl& rhs);
79
80    friend class SurfaceComposerClient;
81    friend class Surface;
82
83    SurfaceControl(
84            const sp<SurfaceComposerClient>& client,
85            const sp<ISurface>& surface);
86
87    ~SurfaceControl();
88
89    status_t validate() const;
90    void destroy();
91
92    sp<SurfaceComposerClient>   mClient;
93    sp<IBinder>                 mSurface;
94    sp<IGraphicBufferProducer>  mGraphicBufferProducer;
95    mutable Mutex               mLock;
96    mutable sp<Surface>         mSurfaceData;
97};
98
99}; // namespace android
100
101#endif // ANDROID_GUI_SURFACE_CONTROL_H
102