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 21 bool FrameStats::isFixedSize() const { 22 return false; 23 } 24 25 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 34 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 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
