text: /*
   *  Copyright (c) 2016 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 WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_NETEQ_PACKET_SOURCE_INPUT_H_
  #define WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_NETEQ_PACKET_SOURCE_INPUT_H_
  
  #include <map>
  #include <string>
  
  #include "webrtc/modules/audio_coding/neteq/tools/neteq_input.h"
  #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
  
  namespace webrtc {
  namespace test {
  
  class RtpFileSource;
  class RtcEventLogSource;
  
  // An adapter class to dress up a PacketSource object as a NetEqInput.
  class NetEqPacketSourceInput : public NetEqInput {
   public:
    using RtpHeaderExtensionMap = std::map<int, webrtc::RTPExtensionType>;
  
    NetEqPacketSourceInput();
    rtc::Optional<int64_t> NextPacketTime() const override;
    std::unique_ptr<PacketData> PopPacket() override;
    rtc::Optional<RTPHeader> NextHeader() const override;
    bool ended() const override { return !next_output_event_ms_; }
  
   protected:
    virtual PacketSource* source() = 0;
    void LoadNextPacket();
  
    rtc::Optional<int64_t> next_output_event_ms_;
  
   private:
    std::unique_ptr<Packet> packet_;
  };
  
  // Implementation of NetEqPacketSourceInput to be used with an RtpFileSource.
  class NetEqRtpDumpInput final : public NetEqPacketSourceInput {
   public:
    NetEqRtpDumpInput(const std::string& file_name,
                      const RtpHeaderExtensionMap& hdr_ext_map);
  
    rtc::Optional<int64_t> NextOutputEventTime() const override;
    void AdvanceOutputEvent() override;
  
   protected:
    PacketSource* source() override;
  
   private:
    static constexpr int64_t kOutputPeriodMs = 10;
  
    std::unique_ptr<RtpFileSource> source_;
  };
  
  // Implementation of NetEqPacketSourceInput to be used with an
  // RtcEventLogSource.
  class NetEqEventLogInput final : public NetEqPacketSourceInput {
   public:
    NetEqEventLogInput(const std::string& file_name,
                       const RtpHeaderExtensionMap& hdr_ext_map);
  
    rtc::Optional<int64_t> NextOutputEventTime() const override;
    void AdvanceOutputEvent() override;
  
   protected:
    PacketSource* source() override;
  
   private:
    std::unique_ptr<RtcEventLogSource> source_;
  };
  
  }  // namespace test
  }  // namespace webrtc
  #endif  // WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_NETEQ_PACKET_SOURCE_INPUT_H_
  