SurfaceControl.h revision 82364e3cea0bf88fa8147766433329b3dd5148b8 
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/FrameStats.h>
28#include <ui/PixelFormat.h>
29#include <ui/Region.h>
30
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
50    bool isValid() {
51        return mHandle!=0 && mClient!=0;
52    }
53
54    static bool isSameSurface(
55            const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs);
56
57    // release surface data from java
58    void        clear();
59
60    // disconnect any api that's connected
61    void        disconnect();
62
63    status_t    setLayerStack(uint32_t layerStack);
64    status_t    setLayer(uint32_t layer);
65    status_t    setPosition(float x, float y);
66    status_t    setSize(uint32_t w, uint32_t h);
67    status_t    hide();
68    status_t    show();
69    status_t    setFlags(uint32_t flags, uint32_t mask);
70    status_t    setTransparentRegionHint(const Region& transparent);
71    status_t    setAlpha(float alpha=1.0f);
72    status_t    setMatrix(float dsdx, float dtdx, float dsdy, float dtdy);
73    status_t    setCrop(const Rect& crop);
74    status_t    setFinalCrop(const Rect& crop);
75
76    // If the size changes in this transaction, position updates specified
77    // in this transaction will not complete until a buffer of the new size
78    // arrives.
79    status_t    setPositionAppliesWithResize();
80
81    // Defers applying any changes made in this transaction until the Layer
82    // identified by handle reaches the given frameNumber
83    status_t deferTransactionUntil(sp<IBinder> handle, uint64_t frameNumber);
84
85    // Set an override scaling mode as documented in <system/window.h>
86    // the override scaling mode will take precedence over any client
87    // specified scaling mode. -1 will clear the override scaling mode.
88    status_t setOverrideScalingMode(int32_t overrideScalingMode);
89
90    static status_t writeSurfaceToParcel(
91            const sp<SurfaceControl>& control, Parcel* parcel);
92
93    sp<Surface> getSurface() const;
94    sp<IBinder> getHandle() const;
95
96    status_t clearLayerFrameStats() const;
97    status_t getLayerFrameStats(FrameStats* outStats) const;
98
99private:
100    // can't be copied
101    SurfaceControl& operator = (SurfaceControl& rhs);
102    SurfaceControl(const SurfaceControl& rhs);
103
104    friend class SurfaceComposerClient;
105    friend class Surface;
106
107    SurfaceControl(
108            const sp<SurfaceComposerClient>& client,
109            const sp<IBinder>& handle,
110            const sp<IGraphicBufferProducer>& gbp);
111
112    ~SurfaceControl();
113
114    status_t validate() const;
115    void destroy();
116
117    sp<SurfaceComposerClient>   mClient;
118    sp<IBinder>                 mHandle;
119    sp<IGraphicBufferProducer>  mGraphicBufferProducer;
120    mutable Mutex               mLock;
121    mutable sp<Surface>         mSurfaceData;
122};
123
124}; // namespace android
125
126#endif // ANDROID_GUI_SURFACE_CONTROL_H
127