You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
107 lines
2.9 KiB
107 lines
2.9 KiB
4 months ago
|
/*
|
||
|
|
* Copyright (C) 2017 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define LOG_TAG "CameraLatencyHistogram"
|
||
|
|
#include <inttypes.h>
|
||
|
|
#include <utils/Log.h>
|
||
|
|
#include <utils/String8.h>
|
||
|
|
|
||
|
|
#include "LatencyHistogram.h"
|
||
|
|
|
||
|
|
namespace android {
|
||
|
|
|
||
|
|
CameraLatencyHistogram::CameraLatencyHistogram(int32_t binSizeMs, int32_t binCount) :
|
||
|
|
mBinSizeMs(binSizeMs),
|
||
|
|
mBinCount(binCount),
|
||
|
|
mBins(binCount),
|
||
|
|
mTotalCount(0) {
|
||
|
|
}
|
||
|
|
|
||
|
|
void CameraLatencyHistogram::add(nsecs_t start, nsecs_t end) {
|
||
|
|
nsecs_t duration = end - start;
|
||
|
|
int32_t durationMs = static_cast<int32_t>(duration / 1000000LL);
|
||
|
|
int32_t binIndex = durationMs / mBinSizeMs;
|
||
|
|
|
||
|
|
if (binIndex < 0) {
|
||
|
|
binIndex = 0;
|
||
|
|
} else if (binIndex >= mBinCount) {
|
||
|
|
binIndex = mBinCount-1;
|
||
|
|
}
|
||
|
|
|
||
|
|
mBins[binIndex]++;
|
||
|
|
mTotalCount++;
|
||
|
|
}
|
||
|
|
|
||
|
|
void CameraLatencyHistogram::reset() {
|
||
|
|
memset(mBins.data(), 0, mBins.size() * sizeof(int64_t));
|
||
|
|
mTotalCount = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void CameraLatencyHistogram::dump(int fd, const char* name) const {
|
||
|
|
if (mTotalCount == 0) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
String8 lines;
|
||
|
|
lines.appendFormat("%s (%" PRId64 ") samples\n", name, mTotalCount);
|
||
|
|
|
||
|
|
String8 lineBins, lineBinCounts;
|
||
|
|
formatHistogramText(lineBins, lineBinCounts);
|
||
|
|
|
||
|
|
lineBins.append("\n");
|
||
|
|
lineBinCounts.append("\n");
|
||
|
|
lines.append(lineBins);
|
||
|
|
lines.append(lineBinCounts);
|
||
|
|
|
||
|
|
write(fd, lines.string(), lines.size());
|
||
|
|
}
|
||
|
|
|
||
|
|
void CameraLatencyHistogram::log(const char* fmt, ...) {
|
||
|
|
if (mTotalCount == 0) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
va_list args;
|
||
|
|
va_start(args, fmt);
|
||
|
|
String8 histogramName = String8::formatV(fmt, args);
|
||
|
|
ALOGI("%s (%" PRId64 ") samples:", histogramName.string(), mTotalCount);
|
||
|
|
va_end(args);
|
||
|
|
|
||
|
|
String8 lineBins, lineBinCounts;
|
||
|
|
formatHistogramText(lineBins, lineBinCounts);
|
||
|
|
|
||
|
|
ALOGI("%s", lineBins.c_str());
|
||
|
|
ALOGI("%s", lineBinCounts.c_str());
|
||
|
|
}
|
||
|
|
|
||
|
|
void CameraLatencyHistogram::formatHistogramText(
|
||
|
|
String8& lineBins, String8& lineBinCounts) const {
|
||
|
|
lineBins = " ";
|
||
|
|
lineBinCounts = " ";
|
||
|
|
|
||
|
|
for (int32_t i = 0; i < mBinCount; i++) {
|
||
|
|
if (i == mBinCount - 1) {
|
||
|
|
lineBins.append(" inf (max ms)");
|
||
|
|
} else {
|
||
|
|
lineBins.appendFormat("%7d", mBinSizeMs*(i+1));
|
||
|
|
}
|
||
|
|
lineBinCounts.appendFormat(" %02.2f", 100.0*mBins[i]/mTotalCount);
|
||
|
|
}
|
||
|
|
lineBinCounts.append(" (%)");
|
||
|
|
}
|
||
|
|
|
||
|
|
}; //namespace android
|