FramebufferNativeWindow.h revision 5f2165f9455d4893b581b73a67c5431f4344b47e 
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_FRAMEBUFFER_NATIVE_WINDOW_H
18#define ANDROID_FRAMEBUFFER_NATIVE_WINDOW_H
19
20#include <stdint.h>
21#include <sys/types.h>
22
23#include <EGL/egl.h>
24
25#include <utils/threads.h>
26#include <utils/String8.h>
27
28#include <ui/ANativeObjectBase.h>
29#include <ui/Rect.h>
30
31#define NUM_FRAME_BUFFERS  2
32
33extern "C" EGLNativeWindowType android_createDisplaySurface(void);
34
35// ---------------------------------------------------------------------------
36namespace android {
37// ---------------------------------------------------------------------------
38
39class Surface;
40class NativeBuffer;
41
42// ---------------------------------------------------------------------------
43
44class FramebufferNativeWindow
45    : public ANativeObjectBase<
46        ANativeWindow,
47        FramebufferNativeWindow,
48        LightRefBase<FramebufferNativeWindow> >
49{
50public:
51    FramebufferNativeWindow();
52
53    framebuffer_device_t const * getDevice() const { return fbDev; }
54
55    bool isUpdateOnDemand() const { return mUpdateOnDemand; }
56    status_t setUpdateRectangle(const Rect& updateRect);
57    status_t compositionComplete();
58
59    void dump(String8& result);
60
61    // for debugging only
62    int getCurrentBufferIndex() const;
63
64private:
65    friend class LightRefBase<FramebufferNativeWindow>;
66    ~FramebufferNativeWindow(); // this class cannot be overloaded
67    static int setSwapInterval(ANativeWindow* window, int interval);
68    static int dequeueBuffer(ANativeWindow* window, ANativeWindowBuffer** buffer);
69    static int lockBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
70    static int queueBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
71    static int query(const ANativeWindow* window, int what, int* value);
72    static int perform(ANativeWindow* window, int operation, ...);
73
74    framebuffer_device_t* fbDev;
75    alloc_device_t* grDev;
76
77    sp<NativeBuffer> buffers[NUM_FRAME_BUFFERS];
78    sp<NativeBuffer> front;
79
80    mutable Mutex mutex;
81    Condition mCondition;
82    int32_t mNumBuffers;
83    int32_t mNumFreeBuffers;
84    int32_t mBufferHead;
85    int32_t mCurrentBufferIndex;
86    bool mUpdateOnDemand;
87};
88
89// ---------------------------------------------------------------------------
90}; // namespace android
91// ---------------------------------------------------------------------------
92
93#endif // ANDROID_FRAMEBUFFER_NATIVE_WINDOW_H
94
95