| /* |
| * Copyright (c) 2023 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include "rtc_tools/rtc_event_log_visualizer/analyzer_bindings.h" |
| |
| #include <cstddef> |
| #include <cstdint> |
| #include <cstring> |
| #include <iostream> |
| #include <string> |
| #include <vector> |
| |
| #include "absl/strings/string_view.h" |
| #include "api/units/time_delta.h" |
| #include "logging/rtc_event_log/rtc_event_log_parser.h" |
| #include "rtc_base/numerics/safe_conversions.h" |
| #include "rtc_base/protobuf_utils.h" |
| #include "rtc_tools/rtc_event_log_visualizer/analyzer.h" |
| #include "rtc_tools/rtc_event_log_visualizer/analyzer_common.h" |
| #include "rtc_tools/rtc_event_log_visualizer/plot_base.h" |
| |
| #ifdef WEBRTC_ANDROID_PLATFORM_BUILD |
| #include "external/webrtc/webrtc/rtc_tools/rtc_event_log_visualizer/proto/chart.pb.h" |
| #else |
| #include "rtc_tools/rtc_event_log_visualizer/proto/chart.pb.h" |
| #endif |
| |
| using webrtc::PacketDirection; |
| |
| namespace { |
| std::vector<std::string> StrSplit(const std::string& s, |
| const std::string& delimiter) { |
| std::vector<std::string> v; |
| size_t pos = 0; |
| while (pos < s.length()) { |
| const std::string token = s.substr(pos, s.find(delimiter, pos) - pos); |
| pos += token.length() + delimiter.length(); |
| v.push_back(token); |
| } |
| return v; |
| } |
| } // namespace |
| |
| void analyze_rtc_event_log(const char* log_contents, |
| size_t log_size, |
| const char* selection, |
| size_t selection_size, |
| char* output, |
| uint32_t* output_size) { |
| webrtc::ParsedRtcEventLog parsed_log( |
| webrtc::ParsedRtcEventLog::UnconfiguredHeaderExtensions::kDontParse, |
| /*allow_incomplete_logs*/ false); |
| |
| absl::string_view log_view(log_contents, log_size); |
| auto status = parsed_log.ParseString(log_view); |
| if (!status.ok()) { |
| std::cerr << "Failed to parse log: " << status.message() << std::endl; |
| *output_size = 0; |
| return; |
| } |
| |
| webrtc::AnalyzerConfig config; |
| config.window_duration_ = webrtc::TimeDelta::Millis(250); |
| config.step_ = webrtc::TimeDelta::Millis(10); |
| if (!parsed_log.start_log_events().empty()) { |
| config.rtc_to_utc_offset_ = parsed_log.start_log_events()[0].utc_time() - |
| parsed_log.start_log_events()[0].log_time(); |
| } |
| config.normalize_time_ = true; |
| config.begin_time_ = parsed_log.first_timestamp(); |
| config.end_time_ = parsed_log.last_timestamp(); |
| if (config.end_time_ < config.begin_time_) { |
| std::cerr << "Log end time " << config.end_time_.ms() |
| << " not after begin time " << config.begin_time_.ms() |
| << ". Nothing to analyze. Is the log broken?"; |
| *output_size = 0; |
| return; |
| } |
| |
| webrtc::EventLogAnalyzer analyzer(parsed_log, config); |
| analyzer.InitializeMapOfNamedGraphs(/*show_detector_state=*/false, |
| /*show_alr_state=*/false, |
| /*show_link_capacity=*/false); |
| |
| webrtc::PlotCollection collection; |
| std::vector<std::string> plot_names = |
| StrSplit(std::string(selection, selection_size), ","); |
| analyzer.CreateGraphsByName(plot_names, &collection); |
| collection.SetCallTimeToUtcOffsetMs(config.CallTimeToUtcOffsetMs()); |
| |
| webrtc::analytics::ChartCollection proto_charts; |
| collection.ExportProtobuf(&proto_charts); |
| std::string serialized_charts = proto_charts.SerializeAsString(); |
| if (rtc::checked_cast<uint32_t>(serialized_charts.size()) > *output_size) { |
| std::cerr << "Serialized charts larger than available output buffer: " |
| << serialized_charts.size() << " vs " << *output_size |
| << std::endl; |
| *output_size = 0; |
| return; |
| } |
| |
| memcpy(output, serialized_charts.data(), serialized_charts.size()); |
| *output_size = rtc::checked_cast<uint32_t>(serialized_charts.size()); |
| } |