FramebufferNativeWindow.h revision 0bc64be3f5198f8dda1ced21bbc957a1d76efbb7 
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 MIN_NUM_FRAME_BUFFERS  2
32#define MAX_NUM_FRAME_BUFFERS  3
33
34extern "C" EGLNativeWindowType android_createDisplaySurface(void);
35
36// ---------------------------------------------------------------------------
37namespace android {
38// ---------------------------------------------------------------------------
39
40class Surface;
41class NativeBuffer;
42
43// ---------------------------------------------------------------------------
44
45class FramebufferNativeWindow
46    : public ANativeObjectBase<
47        ANativeWindow,
48        FramebufferNativeWindow,
49        LightRefBase<FramebufferNativeWindow> >
50{
51public:
52    FramebufferNativeWindow();
53
54    framebuffer_device_t const * getDevice() const { return fbDev; }
55
56    bool isUpdateOnDemand() const { return mUpdateOnDemand; }
57    status_t setUpdateRectangle(const Rect& updateRect);
58    status_t compositionComplete();
59
60    void dump(String8& result);
61
62    // for debugging only
63    int getCurrentBufferIndex() const;
64
65private:
66    friend class LightRefBase<FramebufferNativeWindow>;
67    ~FramebufferNativeWindow(); // this class cannot be overloaded
68    static int setSwapInterval(ANativeWindow* window, int interval);
69    static int dequeueBuffer(ANativeWindow* window, ANativeWindowBuffer** buffer);
70    static int lockBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
71    static int queueBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
72    static int query(const ANativeWindow* window, int what, int* value);
73    static int perform(ANativeWindow* window, int operation, ...);
74
75    framebuffer_device_t* fbDev;
76    alloc_device_t* grDev;
77
78    sp<NativeBuffer> buffers[MAX_NUM_FRAME_BUFFERS];
79    sp<NativeBuffer> front;
80
81    mutable Mutex mutex;
82    Condition mCondition;
83    int32_t mNumBuffers;
84    int32_t mNumFreeBuffers;
85    int32_t mBufferHead;
86    int32_t mCurrentBufferIndex;
87    bool mUpdateOnDemand;
88};
89
90// ---------------------------------------------------------------------------
91}; // namespace android
92// ---------------------------------------------------------------------------
93
94#endif // ANDROID_FRAMEBUFFER_NATIVE_WINDOW_H
95
96