FramebufferSurface.h revision a49126087b4494f4ef50873f3a3f6727265f6621 
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_SF_FRAMEBUFFER_SURFACE_H
18#define ANDROID_SF_FRAMEBUFFER_SURFACE_H
19
20#include <stdint.h>
21#include <sys/types.h>
22
23#include <EGL/egl.h>
24
25#include <gui/SurfaceTextureClient.h>
26
27#define NUM_FRAME_BUFFERS  2
28
29// ---------------------------------------------------------------------------
30namespace android {
31// ---------------------------------------------------------------------------
32
33class Rect;
34class String8;
35
36// ---------------------------------------------------------------------------
37
38class FramebufferSurface : public SurfaceTextureClient {
39public:
40
41    static sp<FramebufferSurface> create();
42
43    // TODO: this should be coming from HWC
44    float getRefreshRate() const;
45
46    bool isUpdateOnDemand() const { return mUpdateOnDemand; }
47    status_t setUpdateRectangle(const Rect& updateRect);
48    status_t compositionComplete();
49
50    void dump(String8& result);
51
52protected:
53    virtual void onFirstRef();
54
55private:
56    FramebufferSurface();
57    virtual ~FramebufferSurface(); // this class cannot be overloaded
58    virtual int query(int what, int* value) const;
59
60    framebuffer_device_t* fbDev;
61
62    sp<BufferQueue> mBufferQueue;
63    int mCurrentBufferIndex;
64    sp<GraphicBuffer> mBuffers[NUM_FRAME_BUFFERS];
65
66    mutable Mutex mLock;
67    bool mUpdateOnDemand;
68};
69
70// ---------------------------------------------------------------------------
71}; // namespace android
72// ---------------------------------------------------------------------------
73
74#endif // ANDROID_SF_FRAMEBUFFER_SURFACE_H
75
76