1 /*
2 * Copyright (C) 2014 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 #include <ui/FrameStats.h>
18
19 namespace android {
20
isFixedSize() const21 bool FrameStats::isFixedSize() const {
22 return false;
23 }
24
getFlattenedSize() const25 size_t FrameStats::getFlattenedSize() const {
26 const size_t timestampSize = sizeof(nsecs_t);
27
28 size_t size = timestampSize;
29 size += 3 * desiredPresentTimesNano.size() * timestampSize;
30
31 return size;
32 }
33
flatten(void * buffer,size_t size) const34 status_t FrameStats::flatten(void* buffer, size_t size) const {
35 if (size < getFlattenedSize()) {
36 return NO_MEMORY;
37 }
38
39 nsecs_t* timestamps = reinterpret_cast<nsecs_t*>(buffer);
40 const size_t timestampSize = sizeof(nsecs_t);
41 size_t frameCount = desiredPresentTimesNano.size();
42
43 memcpy(timestamps, &refreshPeriodNano, timestampSize);
44 timestamps += 1;
45
46 memcpy(timestamps, desiredPresentTimesNano.array(), frameCount * timestampSize);
47 timestamps += frameCount;
48
49 memcpy(timestamps, actualPresentTimesNano.array(), frameCount * timestampSize);
50 timestamps += frameCount;
51
52 memcpy(timestamps, frameReadyTimesNano.array(), frameCount * timestampSize);
53
54 return NO_ERROR;
55 }
56
unflatten(void const * buffer,size_t size)57 status_t FrameStats::unflatten(void const* buffer, size_t size) {
58 const size_t timestampSize = sizeof(nsecs_t);
59
60 if (size < timestampSize) {
61 return NO_MEMORY;
62 }
63
64 nsecs_t const* timestamps = reinterpret_cast<nsecs_t const*>(buffer);
65 size_t frameCount = (size - timestampSize) / (3 * timestampSize);
66
67 memcpy(&refreshPeriodNano, timestamps, timestampSize);
68 timestamps += 1;
69
70 desiredPresentTimesNano.resize(frameCount);
71 memcpy(desiredPresentTimesNano.editArray(), timestamps, frameCount * timestampSize);
72 timestamps += frameCount;
73
74 actualPresentTimesNano.resize(frameCount);
75 memcpy(actualPresentTimesNano.editArray(), timestamps, frameCount * timestampSize);
76 timestamps += frameCount;
77
78 frameReadyTimesNano.resize(frameCount);
79 memcpy(frameReadyTimesNano.editArray(), timestamps, frameCount * timestampSize);
80
81 return NO_ERROR;
82 }
83
84 } // namespace android
85