1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @addtogroup NativeActivity Native Activity
* @{
*/
/**
* @file native_window.h
*/
#ifndef ANDROID_NATIVE_WINDOW_H
#define ANDROID_NATIVE_WINDOW_H
#include <android/rect.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* Pixel formats that a window can use.
*/
enum {
/** Red: 8 bits, Green: 8 bits, Blue: 8 bits, Alpha: 8 bits. **/
WINDOW_FORMAT_RGBA_8888 = 1,
/** Red: 8 bits, Green: 8 bits, Blue: 8 bits, Unused: 8 bits. **/
WINDOW_FORMAT_RGBX_8888 = 2,
/** Red: 5 bits, Green: 6 bits, Blue: 5 bits. **/
WINDOW_FORMAT_RGB_565 = 4,
};
struct ANativeWindow;
/**
* {@link ANativeWindow} is opaque type that provides access to a native window.
*
* A pointer can be obtained using ANativeWindow_fromSurface().
*/
typedef struct ANativeWindow ANativeWindow;
/**
* {@link ANativeWindow} is a struct that represents a windows buffer.
*
* A pointer can be obtained using ANativeWindow_lock().
*/
typedef struct ANativeWindow_Buffer {
// The number of pixels that are show horizontally.
int32_t width;
// The number of pixels that are shown vertically.
int32_t height;
// The number of *pixels* that a line in the buffer takes in
// memory. This may be >= width.
int32_t stride;
// The format of the buffer. One of WINDOW_FORMAT_*
int32_t format;
// The actual bits.
void* bits;
// Do not touch.
uint32_t reserved[6];
} ANativeWindow_Buffer;
/**
* Acquire a reference on the given ANativeWindow object. This prevents the object
* from being deleted until the reference is removed.
*/
void ANativeWindow_acquire(ANativeWindow* window);
/**
* Remove a reference that was previously acquired with ANativeWindow_acquire().
*/
void ANativeWindow_release(ANativeWindow* window);
/**
* Return the current width in pixels of the window surface. Returns a
* negative value on error.
*/
int32_t ANativeWindow_getWidth(ANativeWindow* window);
/**
* Return the current height in pixels of the window surface. Returns a
* negative value on error.
*/
int32_t ANativeWindow_getHeight(ANativeWindow* window);
/**
* Return the current pixel format of the window surface. Returns a
* negative value on error.
*/
int32_t ANativeWindow_getFormat(ANativeWindow* window);
/**
* Change the format and size of the window buffers.
*
* The width and height control the number of pixels in the buffers, not the
* dimensions of the window on screen. If these are different than the
* window's physical size, then it buffer will be scaled to match that size
* when compositing it to the screen.
*
* For all of these parameters, if 0 is supplied then the window's base
* value will come back in force.
*
* width and height must be either both zero or both non-zero.
*
*/
int32_t ANativeWindow_setBuffersGeometry(ANativeWindow* window,
int32_t width, int32_t height, int32_t format);
/**
* Lock the window's next drawing surface for writing.
* inOutDirtyBounds is used as an in/out parameter, upon entering the
* function, it contains the dirty region, that is, the region the caller
* intends to redraw. When the function returns, inOutDirtyBounds is updated
* with the actual area the caller needs to redraw -- this region is often
* extended by ANativeWindow_lock.
*/
int32_t ANativeWindow_lock(ANativeWindow* window, ANativeWindow_Buffer* outBuffer,
ARect* inOutDirtyBounds);
/**
* Unlock the window's drawing surface after previously locking it,
* posting the new buffer to the display.
*/
int32_t ANativeWindow_unlockAndPost(ANativeWindow* window);
#ifdef __cplusplus
};
#endif
#endif // ANDROID_NATIVE_WINDOW_H
/** @} */
|
