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84d8ae5df7
We currently use raw jobject in our code mixed with sporadic ScopedLocalRefFrame. This CL moves every jobject into a scoped object, either local, global, or a parameter. Also, this CL uses the JNI generation script to generate declaration stubs for the Java->C++ functions so that it no longer becomes possible to mistype them without getting compilation errors. TBR=brandt@webrtc.org Bug: webrtc:8278,webrtc:6969 Change-Id: Ic7bac74a89c11180177d65041086d7db1cdfb516 Reviewed-on: https://webrtc-review.googlesource.com/34655 Commit-Queue: Magnus Jedvert <magjed@webrtc.org> Reviewed-by: Sami Kalliomäki <sakal@webrtc.org> Cr-Commit-Position: refs/heads/master@{#21387}
82 lines
2.4 KiB
Java
82 lines
2.4 KiB
Java
/*
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* Copyright 2016 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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package org.webrtc;
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import java.util.HashMap;
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import java.util.Map;
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// Java-side of androidmetrics.cc
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//
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// Rtc histograms can be queried through the API, getAndReset().
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// The returned map holds the name of a histogram and its samples.
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//
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// Example of |map| with one histogram:
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// |name|: "WebRTC.Video.InputFramesPerSecond"
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// |min|: 1
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// |max|: 100
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// |bucketCount|: 50
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// |samples|: [30]:1
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//
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// Most histograms are not updated frequently (e.g. most video metrics are an
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// average over the call and recorded when a stream is removed).
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// The metrics can for example be retrieved when a peer connection is closed.
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@JNINamespace("webrtc::jni")
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public class Metrics {
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private static final String TAG = "Metrics";
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public final Map<String, HistogramInfo> map =
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new HashMap<String, HistogramInfo>(); // <name, HistogramInfo>
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@CalledByNative
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Metrics() {}
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/**
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* Class holding histogram information.
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*/
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public static class HistogramInfo {
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public final int min;
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public final int max;
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public final int bucketCount;
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public final Map<Integer, Integer> samples =
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new HashMap<Integer, Integer>(); // <value, # of events>
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@CalledByNative("HistogramInfo")
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public HistogramInfo(int min, int max, int bucketCount) {
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this.min = min;
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this.max = max;
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this.bucketCount = bucketCount;
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}
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@CalledByNative("HistogramInfo")
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public void addSample(int value, int numEvents) {
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samples.put(value, numEvents);
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}
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}
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@CalledByNative
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private void add(String name, HistogramInfo info) {
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map.put(name, info);
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}
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// Enables gathering of metrics (which can be fetched with getAndReset()).
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// Must be called before PeerConnectionFactory is created.
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public static void enable() {
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nativeEnable();
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}
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// Gets and clears native histograms.
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public static Metrics getAndReset() {
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return nativeGetAndReset();
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}
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private static native void nativeEnable();
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private static native Metrics nativeGetAndReset();
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}
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