xref: /aosp_15_r20/external/webrtc/stats/rtc_stats_report.cc (revision d9f758449e529ab9291ac668be2861e7a55c2422) 
1 /*
2  *  Copyright 2016 The WebRTC Project Authors. All rights reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #include "api/stats/rtc_stats_report.h"
12 
13 #include <type_traits>
14 #include <utility>
15 
16 #include "rtc_base/checks.h"
17 #include "rtc_base/strings/string_builder.h"
18 
19 namespace webrtc {
20 
ConstIterator(const rtc::scoped_refptr<const RTCStatsReport> & report,StatsMap::const_iterator it)21 RTCStatsReport::ConstIterator::ConstIterator(
22     const rtc::scoped_refptr<const RTCStatsReport>& report,
23     StatsMap::const_iterator it)
24     : report_(report), it_(it) {}
25 
26 RTCStatsReport::ConstIterator::ConstIterator(ConstIterator&& other) = default;
27 
~ConstIterator()28 RTCStatsReport::ConstIterator::~ConstIterator() {}
29 
operator ++()30 RTCStatsReport::ConstIterator& RTCStatsReport::ConstIterator::operator++() {
31   ++it_;
32   return *this;
33 }
34 
operator ++(int)35 RTCStatsReport::ConstIterator& RTCStatsReport::ConstIterator::operator++(int) {
36   return ++(*this);
37 }
38 
operator *() const39 const RTCStats& RTCStatsReport::ConstIterator::operator*() const {
40   return *it_->second.get();
41 }
42 
operator ->() const43 const RTCStats* RTCStatsReport::ConstIterator::operator->() const {
44   return it_->second.get();
45 }
46 
operator ==(const RTCStatsReport::ConstIterator & other) const47 bool RTCStatsReport::ConstIterator::operator==(
48     const RTCStatsReport::ConstIterator& other) const {
49   return it_ == other.it_;
50 }
51 
operator !=(const RTCStatsReport::ConstIterator & other) const52 bool RTCStatsReport::ConstIterator::operator!=(
53     const RTCStatsReport::ConstIterator& other) const {
54   return !(*this == other);
55 }
56 
Create(int64_t timestamp_us)57 rtc::scoped_refptr<RTCStatsReport> RTCStatsReport::Create(
58     int64_t timestamp_us) {
59   return rtc::scoped_refptr<RTCStatsReport>(new RTCStatsReport(timestamp_us));
60 }
61 
Create(Timestamp timestamp)62 rtc::scoped_refptr<RTCStatsReport> RTCStatsReport::Create(Timestamp timestamp) {
63   return rtc::scoped_refptr<RTCStatsReport>(new RTCStatsReport(timestamp));
64 }
65 
RTCStatsReport(int64_t timestamp_us)66 RTCStatsReport::RTCStatsReport(int64_t timestamp_us)
67     : RTCStatsReport(Timestamp::Micros(timestamp_us)) {}
68 
RTCStatsReport(Timestamp timestamp)69 RTCStatsReport::RTCStatsReport(Timestamp timestamp) : timestamp_(timestamp) {}
70 
Copy() const71 rtc::scoped_refptr<RTCStatsReport> RTCStatsReport::Copy() const {
72   rtc::scoped_refptr<RTCStatsReport> copy = Create(timestamp_);
73   for (auto it = stats_.begin(); it != stats_.end(); ++it) {
74     copy->AddStats(it->second->copy());
75   }
76   return copy;
77 }
78 
AddStats(std::unique_ptr<const RTCStats> stats)79 void RTCStatsReport::AddStats(std::unique_ptr<const RTCStats> stats) {
80 #if RTC_DCHECK_IS_ON
81   auto result =
82 #endif
83       stats_.insert(std::make_pair(std::string(stats->id()), std::move(stats)));
84 #if RTC_DCHECK_IS_ON
85   RTC_DCHECK(result.second)
86       << "A stats object with ID \"" << result.first->second->id() << "\" is "
87       << "already present in this stats report.";
88 #endif
89 }
90 
Get(const std::string & id) const91 const RTCStats* RTCStatsReport::Get(const std::string& id) const {
92   StatsMap::const_iterator it = stats_.find(id);
93   if (it != stats_.cend())
94     return it->second.get();
95   return nullptr;
96 }
97 
Take(const std::string & id)98 std::unique_ptr<const RTCStats> RTCStatsReport::Take(const std::string& id) {
99   StatsMap::iterator it = stats_.find(id);
100   if (it == stats_.end())
101     return nullptr;
102   std::unique_ptr<const RTCStats> stats = std::move(it->second);
103   stats_.erase(it);
104   return stats;
105 }
106 
TakeMembersFrom(rtc::scoped_refptr<RTCStatsReport> other)107 void RTCStatsReport::TakeMembersFrom(rtc::scoped_refptr<RTCStatsReport> other) {
108   for (StatsMap::iterator it = other->stats_.begin(); it != other->stats_.end();
109        ++it) {
110     AddStats(std::unique_ptr<const RTCStats>(it->second.release()));
111   }
112   other->stats_.clear();
113 }
114 
begin() const115 RTCStatsReport::ConstIterator RTCStatsReport::begin() const {
116   return ConstIterator(rtc::scoped_refptr<const RTCStatsReport>(this),
117                        stats_.cbegin());
118 }
119 
end() const120 RTCStatsReport::ConstIterator RTCStatsReport::end() const {
121   return ConstIterator(rtc::scoped_refptr<const RTCStatsReport>(this),
122                        stats_.cend());
123 }
124 
ToJson() const125 std::string RTCStatsReport::ToJson() const {
126   if (begin() == end()) {
127     return "";
128   }
129   rtc::StringBuilder sb;
130   sb << "[";
131   const char* separator = "";
132   for (ConstIterator it = begin(); it != end(); ++it) {
133     sb << separator << it->ToJson();
134     separator = ",";
135   }
136   sb << "]";
137   return sb.Release();
138 }
139 
140 }  // namespace webrtc
141