FramebufferNativeWindow.h revision 21c59d0070fe24a8e04e52ce04d511a924a9932f 
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#include <EGL/android_natives.h>
25
26#include <utils/threads.h>
27#include <ui/Rect.h>
28
29#include <pixelflinger/pixelflinger.h>
30
31
32extern "C" EGLNativeWindowType android_createDisplaySurface(void);
33
34// ---------------------------------------------------------------------------
35namespace android {
36// ---------------------------------------------------------------------------
37
38class Surface;
39
40
41class NativeBuffer
42    : public EGLNativeBase<
43        android_native_buffer_t,
44        NativeBuffer,
45        LightRefBase<NativeBuffer>  >
46{
47public:
48    NativeBuffer(int w, int h, int f, int u) : BASE() {
49        android_native_buffer_t::width  = w;
50        android_native_buffer_t::height = h;
51        android_native_buffer_t::format = f;
52        android_native_buffer_t::usage  = u;
53    }
54private:
55    friend class LightRefBase<NativeBuffer>;
56    ~NativeBuffer() { }; // this class cannot be overloaded
57};
58
59// ---------------------------------------------------------------------------
60
61class FramebufferNativeWindow
62    : public EGLNativeBase<
63        android_native_window_t,
64        FramebufferNativeWindow,
65        LightRefBase<FramebufferNativeWindow> >
66{
67public:
68    FramebufferNativeWindow();
69
70    framebuffer_device_t const * getDevice() const { return fbDev; }
71
72private:
73    friend class LightRefBase<FramebufferNativeWindow>;
74    ~FramebufferNativeWindow(); // this class cannot be overloaded
75    static int setSwapInterval(android_native_window_t* window, int interval);
76    static int dequeueBuffer(android_native_window_t* window, android_native_buffer_t** buffer);
77    static int lockBuffer(android_native_window_t* window, android_native_buffer_t* buffer);
78    static int queueBuffer(android_native_window_t* window, android_native_buffer_t* buffer);
79
80    framebuffer_device_t* fbDev;
81    alloc_device_t* grDev;
82
83    sp<NativeBuffer> buffers[2];
84    sp<NativeBuffer> front;
85
86    mutable Mutex mutex;
87    Condition mCondition;
88    int32_t mNumBuffers;
89    int32_t mNumFreeBuffers;
90    int32_t mBufferHead;
91};
92
93// ---------------------------------------------------------------------------
94}; // namespace android
95// ---------------------------------------------------------------------------
96
97#endif // ANDROID_FRAMEBUFFER_NATIVE_WINDOW_H
98
99