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      1 /*
      2  *  Copyright (c) 2015 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 #ifndef WEBRTC_VOICE_ENGINE_TEST_AUTO_TEST_FAKES_LOUDEST_FILTER_H_
     12 #define WEBRTC_VOICE_ENGINE_TEST_AUTO_TEST_FAKES_LOUDEST_FILTER_H_
     13 
     14 #include <map>
     15 #include "webrtc/base/timeutils.h"
     16 #include "webrtc/common_types.h"
     17 
     18 namespace voetest {
     19 
     20 class LoudestFilter {
     21  public:
     22   /* ForwardThisPacket()
     23    * Decide whether to forward a RTP packet, given its header.
     24    *
     25    * Input:
     26    *   rtp_header : Header of the RTP packet of interest.
     27    */
     28   bool ForwardThisPacket(const webrtc::RTPHeader& rtp_header);
     29 
     30  private:
     31   struct Status {
     32     void Set(int audio_level, uint32_t last_time_ms) {
     33       this->audio_level = audio_level;
     34       this->last_time_ms = last_time_ms;
     35     }
     36     int audio_level;
     37     uint32_t last_time_ms;
     38   };
     39 
     40   void RemoveTimeoutStreams(uint32_t time_ms);
     41   unsigned int FindQuietestStream();
     42 
     43   // Keeps the streams being forwarded in pair<SSRC, Status>.
     44   std::map<unsigned int, Status> stream_levels_;
     45 
     46   const int32_t kStreamTimeOutMs = 5000;
     47   const size_t kMaxMixSize = 3;
     48   const int kInvalidAudioLevel = 128;
     49 };
     50 
     51 
     52 }  // namespace voetest
     53 
     54 #endif  // WEBRTC_VOICE_ENGINE_TEST_AUTO_TEST_FAKES_LOUDEST_FILTER_H_
     55