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
|
/*
* Copyright 2013 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 "VirtualDisplaySurface.h"
#include "HWComposer.h"
// ---------------------------------------------------------------------------
namespace android {
// ---------------------------------------------------------------------------
VirtualDisplaySurface::VirtualDisplaySurface(HWComposer& hwc, int disp,
const sp<IGraphicBufferProducer>& sink, const String8& name)
: mHwc(hwc),
mDisplayId(disp),
mSource(new BufferQueueInterposer(sink, name)),
mName(name)
{}
VirtualDisplaySurface::~VirtualDisplaySurface() {
if (mAcquiredBuffer != NULL) {
status_t result = mSource->releaseBuffer(Fence::NO_FENCE);
ALOGE_IF(result != NO_ERROR, "VirtualDisplaySurface \"%s\": "
"failed to release buffer: %d", mName.string(), result);
}
}
sp<IGraphicBufferProducer> VirtualDisplaySurface::getIGraphicBufferProducer() const {
return mSource;
}
status_t VirtualDisplaySurface::compositionComplete() {
return NO_ERROR;
}
status_t VirtualDisplaySurface::advanceFrame() {
Mutex::Autolock lock(mMutex);
status_t result = NO_ERROR;
if (mAcquiredBuffer != NULL) {
ALOGE("VirtualDisplaySurface \"%s\": "
"advanceFrame called twice without onFrameCommitted",
mName.string());
return INVALID_OPERATION;
}
sp<Fence> fence;
result = mSource->acquireBuffer(&mAcquiredBuffer, &fence);
if (result == BufferQueueInterposer::NO_BUFFER_AVAILABLE) {
result = mSource->pullEmptyBuffer();
if (result != NO_ERROR)
return result;
result = mSource->acquireBuffer(&mAcquiredBuffer, &fence);
}
if (result != NO_ERROR)
return result;
return mHwc.fbPost(mDisplayId, fence, mAcquiredBuffer);
}
void VirtualDisplaySurface::onFrameCommitted() {
Mutex::Autolock lock(mMutex);
if (mAcquiredBuffer != NULL) {
// fbFence signals when reads from the framebuffer are finished
// outFence signals when writes to the output buffer are finished
// It's unlikely that there will be an implementation where fbFence
// signals after outFence (in fact they'll typically be the same
// sync_pt), but just to be pedantic we merge them so the sink will
// be sure to wait until both are complete.
sp<Fence> fbFence = mHwc.getAndResetReleaseFence(mDisplayId);
sp<Fence> outFence = mHwc.getLastRetireFence(mDisplayId);
sp<Fence> fence = Fence::merge(
String8::format("HWC done: %.21s", mName.string()),
fbFence, outFence);
status_t result = mSource->releaseBuffer(fence);
ALOGE_IF(result != NO_ERROR, "VirtualDisplaySurface \"%s\": "
"failed to release buffer: %d", mName.string(), result);
mAcquiredBuffer.clear();
}
}
void VirtualDisplaySurface::dump(String8& result) const {
}
// ---------------------------------------------------------------------------
} // namespace android
// ---------------------------------------------------------------------------
|
