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/*
* Copyright (C) 2012 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.
*/
// This is needed for stdint.h to define INT64_MAX in C++
#define __STDC_LIMIT_MACROS
#include <ui/Fence.h>
#include <utils/String8.h>
#include "FrameTracker.h"
namespace android {
FrameTracker::FrameTracker() :
mOffset(0),
mNumFences(0) {
}
void FrameTracker::setDesiredPresentTime(nsecs_t presentTime) {
mFrameRecords[mOffset].desiredPresentTime = presentTime;
}
void FrameTracker::setFrameReadyTime(nsecs_t readyTime) {
mFrameRecords[mOffset].frameReadyTime = readyTime;
}
void FrameTracker::setFrameReadyFence(const sp<Fence>& readyFence) {
mFrameRecords[mOffset].frameReadyFence = readyFence;
mNumFences++;
}
void FrameTracker::setActualPresentTime(nsecs_t presentTime) {
mFrameRecords[mOffset].actualPresentTime = presentTime;
}
void FrameTracker::setActualPresentFence(const sp<Fence>& readyFence) {
mFrameRecords[mOffset].actualPresentFence = readyFence;
mNumFences++;
}
void FrameTracker::advanceFrame() {
mOffset = (mOffset+1) % NUM_FRAME_RECORDS;
mFrameRecords[mOffset].desiredPresentTime = INT64_MAX;
mFrameRecords[mOffset].frameReadyTime = INT64_MAX;
mFrameRecords[mOffset].actualPresentTime = INT64_MAX;
if (mFrameRecords[mOffset].frameReadyFence != NULL) {
// We're clobbering an unsignaled fence, so we need to decrement the
// fence count.
mFrameRecords[mOffset].frameReadyFence = NULL;
mNumFences--;
}
if (mFrameRecords[mOffset].actualPresentFence != NULL) {
// We're clobbering an unsignaled fence, so we need to decrement the
// fence count.
mFrameRecords[mOffset].actualPresentFence = NULL;
mNumFences--;
}
// Clean up the signaled fences to keep the number of open fence FDs in
// this process reasonable.
processFences();
}
void FrameTracker::clear() {
for (size_t i = 0; i < NUM_FRAME_RECORDS; i++) {
mFrameRecords[i].desiredPresentTime = 0;
mFrameRecords[i].frameReadyTime = 0;
mFrameRecords[i].actualPresentTime = 0;
mFrameRecords[i].frameReadyFence.clear();
mFrameRecords[i].actualPresentFence.clear();
}
mNumFences = 0;
}
void FrameTracker::processFences() const {
FrameRecord* records = const_cast<FrameRecord*>(mFrameRecords);
int& numFences = const_cast<int&>(mNumFences);
for (int i = 1; i < NUM_FRAME_RECORDS && numFences > 0; i++) {
size_t idx = (mOffset+NUM_FRAME_RECORDS-i) % NUM_FRAME_RECORDS;
const sp<Fence>& rfence = records[idx].frameReadyFence;
if (rfence != NULL) {
records[idx].frameReadyTime = rfence->getSignalTime();
if (records[idx].frameReadyTime < INT64_MAX) {
records[idx].frameReadyFence = NULL;
numFences--;
}
}
const sp<Fence>& pfence = records[idx].actualPresentFence;
if (pfence != NULL) {
records[idx].actualPresentTime = pfence->getSignalTime();
if (records[idx].actualPresentTime < INT64_MAX) {
records[idx].actualPresentFence = NULL;
numFences--;
}
}
}
}
void FrameTracker::dump(String8& result) const {
processFences();
const size_t o = mOffset;
for (size_t i = 1; i < NUM_FRAME_RECORDS; i++) {
const size_t index = (o+i) % NUM_FRAME_RECORDS;
result.appendFormat("%lld\t%lld\t%lld\n",
mFrameRecords[index].desiredPresentTime,
mFrameRecords[index].actualPresentTime,
mFrameRecords[index].frameReadyTime);
}
result.append("\n");
}
} // namespace android
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