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
|
/*
* Copyright 2014 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.
*/
#ifndef ANDROID_GUI_BUFFERITEM_H
#define ANDROID_GUI_BUFFERITEM_H
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <ui/Rect.h>
#include <ui/Region.h>
#include <system/graphics.h>
#include <utils/Flattenable.h>
#include <utils/StrongPointer.h>
namespace android {
class Fence;
class GraphicBuffer;
class BufferItem : public Flattenable<BufferItem> {
friend class Flattenable<BufferItem>;
size_t getPodSize() const;
size_t getFlattenedSize() const;
size_t getFdCount() const;
status_t flatten(void*& buffer, size_t& size, int*& fds, size_t& count) const;
status_t unflatten(void const*& buffer, size_t& size, int const*& fds, size_t& count);
public:
// The default value of mBuf, used to indicate this doesn't correspond to a slot.
enum { INVALID_BUFFER_SLOT = -1 };
BufferItem();
~BufferItem();
static const char* scalingModeName(uint32_t scalingMode);
// mGraphicBuffer points to the buffer allocated for this slot, or is NULL
// if the buffer in this slot has been acquired in the past (see
// BufferSlot.mAcquireCalled).
sp<GraphicBuffer> mGraphicBuffer;
// mFence is a fence that will signal when the buffer is idle.
sp<Fence> mFence;
// mCrop is the current crop rectangle for this buffer slot.
Rect mCrop;
// mTransform is the current transform flags for this buffer slot.
// refer to NATIVE_WINDOW_TRANSFORM_* in <window.h>
uint32_t mTransform;
// mScalingMode is the current scaling mode for this buffer slot.
// refer to NATIVE_WINDOW_SCALING_* in <window.h>
uint32_t mScalingMode;
// mTimestamp is the current timestamp for this buffer slot. This gets
// to set by queueBuffer each time this slot is queued. This value
// is guaranteed to be monotonically increasing for each newly
// acquired buffer.
union {
int64_t mTimestamp;
struct {
uint32_t mTimestampLo;
uint32_t mTimestampHi;
};
};
// mIsAutoTimestamp indicates whether mTimestamp was generated
// automatically when the buffer was queued.
bool mIsAutoTimestamp;
// mDataSpace is the current dataSpace value for this buffer slot. This gets
// set by queueBuffer each time this slot is queued. The meaning of the
// dataSpace is format-dependent.
android_dataspace mDataSpace;
// mFrameNumber is the number of the queued frame for this slot.
union {
uint64_t mFrameNumber;
struct {
uint32_t mFrameNumberLo;
uint32_t mFrameNumberHi;
};
};
union {
// mSlot is the slot index of this buffer (default INVALID_BUFFER_SLOT).
int mSlot;
// mBuf is the former name for mSlot
int mBuf;
};
// mIsDroppable whether this buffer was queued with the
// property that it can be replaced by a new buffer for the purpose of
// making sure dequeueBuffer() won't block.
// i.e.: was the BufferQueue in "mDequeueBufferCannotBlock" when this buffer
// was queued.
bool mIsDroppable;
// Indicates whether this buffer has been seen by a consumer yet
bool mAcquireCalled;
// Indicates this buffer must be transformed by the inverse transform of the screen
// it is displayed onto. This is applied after mTransform.
bool mTransformToDisplayInverse;
// Describes the portion of the surface that has been modified since the
// previous frame
Region mSurfaceDamage;
};
} // namespace android
#endif
|
