Replace voe_conference_test.

webrtc/voice_engine/test/auto_test/fakes/loudest_filter.cc

-/*
- *  Copyright (c) 2015 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 "webrtc/voice_engine/test/auto_test/fakes/loudest_filter.h"
-
-#include "webrtc/rtc_base/checks.h"
-
-namespace webrtc {
-namespace voetest {
-
-void LoudestFilter::RemoveTimeoutStreams(int64_t time_ms) {
-  auto it = stream_levels_.begin();
-  while (it != stream_levels_.end()) {
-    if (rtc::TimeDiff(time_ms, it->second.last_time_ms) > kStreamTimeOutMs) {
-      stream_levels_.erase(it++);
-    } else {
-      ++it;
-    }
-  }
-}
-
-unsigned int LoudestFilter::FindQuietestStream() {
-  int quietest_level = kInvalidAudioLevel;
-  unsigned int quietest_ssrc = 0;
-  for (auto stream : stream_levels_) {
-    // A smaller value if audio level corresponds to a louder sound.
-    if (quietest_level == kInvalidAudioLevel ||
-        stream.second.audio_level > quietest_level) {
-      quietest_level = stream.second.audio_level;
-      quietest_ssrc = stream.first;
-    }
-  }
-  return quietest_ssrc;
-}
-
-bool LoudestFilter::ForwardThisPacket(const webrtc::RTPHeader& rtp_header) {
-  int64_t time_now_ms = rtc::TimeMillis();
-  RemoveTimeoutStreams(time_now_ms);
-
-  int source_ssrc = rtp_header.ssrc;
-  int audio_level = rtp_header.extension.hasAudioLevel ?
-      rtp_header.extension.audioLevel : kInvalidAudioLevel;
-
-  if (audio_level == kInvalidAudioLevel) {
-    // Always forward streams with unknown audio level, and don't keep their
-    // states.
-    return true;
-  }
-
-  auto it = stream_levels_.find(source_ssrc);
-  if (it != stream_levels_.end()) {
-    // Stream has been forwarded. Update and continue to forward.
-    it->second.audio_level = audio_level;
-    it->second.last_time_ms = time_now_ms;
-    return true;
-  }
-
-  if (stream_levels_.size() < kMaxMixSize) {
-    stream_levels_[source_ssrc].Set(audio_level, time_now_ms);
-    return true;
-  }
-
-  unsigned int quietest_ssrc = FindQuietestStream();
-  RTC_CHECK_NE(0, quietest_ssrc);
-  // A smaller value if audio level corresponds to a louder sound.
-  if (audio_level < stream_levels_[quietest_ssrc].audio_level) {
-    stream_levels_.erase(quietest_ssrc);
-    stream_levels_[source_ssrc].Set(audio_level, time_now_ms);
-    return true;
-  }
-  return false;
-}
-
-}  // namespace voetest
-}  // namespace webrtc