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49 lines
1.4 KiB
49 lines
1.4 KiB
4 months ago
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/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_SERVERS_CAMERA_LATENCY_HISTOGRAM_H_
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#define ANDROID_SERVERS_CAMERA_LATENCY_HISTOGRAM_H_
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#include <vector>
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#include <utils/Timers.h>
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#include <utils/Mutex.h>
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namespace android {
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// Histogram for camera latency characteristic
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class CameraLatencyHistogram {
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public:
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CameraLatencyHistogram() = delete;
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CameraLatencyHistogram(int32_t binSizeMs, int32_t binCount=10);
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void add(nsecs_t start, nsecs_t end);
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void reset();
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void dump(int fd, const char* name) const;
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void log(const char* format, ...);
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private:
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int32_t mBinSizeMs;
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int32_t mBinCount;
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std::vector<int64_t> mBins;
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uint64_t mTotalCount;
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void formatHistogramText(String8& lineBins, String8& lineBinCounts) const;
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}; // class CameraLatencyHistogram
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}; // namespace android
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#endif // ANDROID_SERVERS_CAMERA_LATENCY_HISTOGRAM_H_
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