FramebufferNativeWindow.h revision 41abd67302b52aefadc2b3dea42226f16bf6d9ba 
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#include <ui/Rect.h>
28
29#include <pixelflinger/pixelflinger.h>
30
31#include <ui/egl/android_natives.h>
32
33#define NUM_FRAME_BUFFERS  2
34
35extern "C" EGLNativeWindowType android_createDisplaySurface(void);
36
37// ---------------------------------------------------------------------------
38namespace android {
39// ---------------------------------------------------------------------------
40
41class Surface;
42class NativeBuffer;
43
44// ---------------------------------------------------------------------------
45
46class FramebufferNativeWindow
47    : public EGLNativeBase<
48        ANativeWindow,
49        FramebufferNativeWindow,
50        LightRefBase<FramebufferNativeWindow> >
51{
52public:
53    FramebufferNativeWindow();
54
55    framebuffer_device_t const * getDevice() const { return fbDev; }
56
57    bool isUpdateOnDemand() const { return mUpdateOnDemand; }
58    status_t setUpdateRectangle(const Rect& updateRect);
59    status_t compositionComplete();
60
61    void dump(String8& result);
62
63    // for debugging only
64    int getCurrentBufferIndex() const;
65
66private:
67    friend class LightRefBase<FramebufferNativeWindow>;
68    ~FramebufferNativeWindow(); // this class cannot be overloaded
69    static int setSwapInterval(ANativeWindow* window, int interval);
70    static int dequeueBuffer(ANativeWindow* window, android_native_buffer_t** buffer);
71    static int lockBuffer(ANativeWindow* window, android_native_buffer_t* buffer);
72    static int queueBuffer(ANativeWindow* window, android_native_buffer_t* buffer);
73    static int query(const ANativeWindow* window, int what, int* value);
74    static int perform(ANativeWindow* window, int operation, ...);
75
76    framebuffer_device_t* fbDev;
77    alloc_device_t* grDev;
78
79    sp<NativeBuffer> buffers[NUM_FRAME_BUFFERS];
80    sp<NativeBuffer> front;
81
82    mutable Mutex mutex;
83    Condition mCondition;
84    int32_t mNumBuffers;
85    int32_t mNumFreeBuffers;
86    int32_t mBufferHead;
87    int32_t mCurrentBufferIndex;
88    bool mUpdateOnDemand;
89};
90
91// ---------------------------------------------------------------------------
92}; // namespace android
93// ---------------------------------------------------------------------------
94
95#endif // ANDROID_FRAMEBUFFER_NATIVE_WINDOW_H
96
97