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
|
/*
* Copyright (C) 2019 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.
*/
#include <gui/BufferQueue.h>
#include <system/window.h>
namespace android {
class HostBufferQueue : public IGraphicBufferProducer, public IGraphicBufferConsumer {
public:
HostBufferQueue() : mWidth(0), mHeight(0) {}
// Consumer
virtual status_t setConsumerIsProtected(bool isProtected) {
return OK;
}
virtual status_t detachBuffer(int slot) {
mBuffer.clear();
return OK;
}
virtual status_t getReleasedBuffers(uint64_t* slotMask) {
return OK;
}
virtual status_t setDefaultBufferSize(uint32_t w, uint32_t h) {
mWidth = w;
mHeight = h;
mBuffer = sp<GraphicBuffer>(new GraphicBuffer(mWidth, mHeight));
return OK;
}
virtual status_t setDefaultBufferFormat(PixelFormat defaultFormat) {
return OK;
}
virtual status_t setDefaultBufferDataSpace(android_dataspace defaultDataSpace) {
return OK;
}
virtual status_t discardFreeBuffers() {
return OK;
}
virtual status_t acquireBuffer(BufferItem* buffer, nsecs_t presentWhen,
uint64_t maxFrameNumber = 0) {
buffer->mGraphicBuffer = mBuffer;
buffer->mSlot = 0;
return OK;
}
virtual status_t setMaxAcquiredBufferCount(int maxAcquiredBuffers) {
return OK;
}
virtual status_t setConsumerUsageBits(uint64_t usage) {
return OK;
}
// Producer
virtual int query(int what, int* value) {
switch (what) {
case NATIVE_WINDOW_WIDTH:
*value = mWidth;
break;
case NATIVE_WINDOW_HEIGHT:
*value = mHeight;
break;
default:
*value = 0;
break;
}
return OK;
}
virtual status_t requestBuffer(int slot, sp<GraphicBuffer>* buf) {
*buf = mBuffer;
return OK;
}
private:
sp<GraphicBuffer> mBuffer;
uint32_t mWidth;
uint32_t mHeight;
};
void BufferQueue::createBufferQueue(sp<IGraphicBufferProducer>* outProducer,
sp<IGraphicBufferConsumer>* outConsumer) {
sp<HostBufferQueue> obj(new HostBufferQueue());
*outProducer = obj;
*outConsumer = obj;
}
} // namespace android
|