text: /*
   *  Copyright (c) 2017 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.
   */
  
  #ifndef MODULES_AUDIO_CODING_NETEQ_TOOLS_NETEQ_DELAY_ANALYZER_H_
  #define MODULES_AUDIO_CODING_NETEQ_TOOLS_NETEQ_DELAY_ANALYZER_H_
  
  #include <map>
  #include <set>
  #include <string>
  #include <vector>
  
  #include "absl/types/optional.h"
  #include "modules/audio_coding/neteq/tools/neteq_input.h"
  #include "modules/audio_coding/neteq/tools/neteq_test.h"
  #include "typedefs.h"  // NOLINT(build/include)
  
  namespace webrtc {
  namespace test {
  
  class NetEqDelayAnalyzer : public test::NetEqPostInsertPacket,
                             public test::NetEqGetAudioCallback {
   public:
    void AfterInsertPacket(const test::NetEqInput::PacketData& packet,
                           NetEq* neteq) override;
  
    void BeforeGetAudio(NetEq* neteq) override;
  
    void AfterGetAudio(int64_t time_now_ms,
                       const AudioFrame& audio_frame,
                       bool muted,
                       NetEq* neteq) override;
  
    void CreateGraphs(std::vector<float>* send_times_s,
                      std::vector<float>* arrival_delay_ms,
                      std::vector<float>* corrected_arrival_delay_ms,
                      std::vector<absl::optional<float>>* playout_delay_ms,
                      std::vector<absl::optional<float>>* target_delay_ms) const;
  
    // Creates a matlab script with file name script_name. When executed in
    // Matlab, the script will generate graphs with the same timing information
    // as provided by CreateGraphs.
    void CreateMatlabScript(const std::string& script_name) const;
  
    // Creates a python script with file name |script_name|. When executed in
    // Python, the script will generate graphs with the same timing information
    // as provided by CreateGraphs.
    void CreatePythonScript(const std::string& script_name) const;
  
   private:
    struct TimingData {
      explicit TimingData(double at) : arrival_time_ms(at) {}
      double arrival_time_ms;
      absl::optional<int64_t> decode_get_audio_count;
      absl::optional<int64_t> sync_delay_ms;
      absl::optional<int> target_delay_ms;
      absl::optional<int> current_delay_ms;
    };
    std::map<uint32_t, TimingData> data_;
    std::vector<int64_t> get_audio_time_ms_;
    size_t get_audio_count_ = 0;
    size_t last_sync_buffer_ms_ = 0;
    int last_sample_rate_hz_ = 0;
    std::set<uint32_t> ssrcs_;
    std::set<int> payload_types_;
  };
  
  }  // namespace test
  }  // namespace webrtc
  #endif  // MODULES_AUDIO_CODING_NETEQ_TOOLS_NETEQ_DELAY_ANALYZER_H_
  