FramebufferNativeWindow.h revision 71484f2f76457287a1fbf5791f530c2b2459aa0c 
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 <ui/Rect.h>
27
28#include <pixelflinger/pixelflinger.h>
29
30#include <ui/egl/android_natives.h>
31
32#define NUM_FRAME_BUFFERS  2
33
34extern "C" EGLNativeWindowType android_createDisplaySurface(void);
35
36// ---------------------------------------------------------------------------
37namespace android {
38// ---------------------------------------------------------------------------
39
40class Surface;
41class NativeBuffer;
42
43// ---------------------------------------------------------------------------
44
45class FramebufferNativeWindow
46    : public EGLNativeBase<
47        android_native_window_t,
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
60private:
61    friend class LightRefBase<FramebufferNativeWindow>;
62    ~FramebufferNativeWindow(); // this class cannot be overloaded
63    static int setSwapInterval(android_native_window_t* window, int interval);
64    static int dequeueBuffer(android_native_window_t* window, android_native_buffer_t** buffer);
65    static int lockBuffer(android_native_window_t* window, android_native_buffer_t* buffer);
66    static int queueBuffer(android_native_window_t* window, android_native_buffer_t* buffer);
67    static int query(android_native_window_t* window, int what, int* value);
68    static int perform(android_native_window_t* window, int operation, ...);
69
70    framebuffer_device_t* fbDev;
71    alloc_device_t* grDev;
72
73    sp<NativeBuffer> buffers[NUM_FRAME_BUFFERS];
74    sp<NativeBuffer> front;
75
76    mutable Mutex mutex;
77    Condition mCondition;
78    int32_t mNumBuffers;
79    int32_t mNumFreeBuffers;
80    int32_t mBufferHead;
81    bool mUpdateOnDemand;
82};
83
84// ---------------------------------------------------------------------------
85}; // namespace android
86// ---------------------------------------------------------------------------
87
88#endif // ANDROID_FRAMEBUFFER_NATIVE_WINDOW_H
89
90