Move VoiceEngineObserver into AudioSendStream so that we detect typing noises and return properly i…

webrtc/audio/voice_engines.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/audio/voice_engines.h"
+
+#include "webrtc/audio/typing_noise_observer.h"
+#include "webrtc/base/checks.h"
+#include "webrtc/base/logging.h"
+#include "webrtc/voice_engine/include/voe_base.h"
+
+namespace webrtc {
+namespace internal {
+
+VoiceEngines::VoiceEngines() {
+  thread_checker_.DetachFromThread();
+}
+
+VoiceEngines::~VoiceEngines() {
+  RTC_DCHECK_EQ(voice_engines_.size(), 0u);
+}
+
+void VoiceEngines::RegisterVoiceEngine(VoiceEngine* voice_engine) {
+  RTC_DCHECK(thread_checker_.CalledOnValidThread());
+  RTC_DCHECK(voice_engine);
+  auto it = voice_engines_.find(voice_engine);
+  if (it == voice_engines_.end()) {
+    State state;
+    state.voe_base_ = VoEBase::GetInterface(voice_engine);
+    RTC_DCHECK(state.voe_base_);
+    state.observer_ = new TypingNoiseObserver();
+    if (state.voe_base_->RegisterVoiceEngineObserver(*state.observer_) == -1) {
+      LOG(LS_WARNING) << "VoEObserver already registered!";
+      delete state.observer_;
+      state.observer_ = nullptr;
+    }
+    it = voice_engines_.insert(voice_engines_.begin(),
+                               std::make_pair(voice_engine, state));
+  }
+  it->second.ref_count_++;
+}
+
+void VoiceEngines::DeregisterVoiceEngine(VoiceEngine* voice_engine) {
+  RTC_DCHECK(thread_checker_.CalledOnValidThread());
+  auto it = voice_engines_.find(voice_engine);
+  RTC_DCHECK(it != voice_engines_.end());
+  State& state = it->second;
+  RTC_DCHECK(state.ref_count_ >= 1);
+  state.ref_count_--;
+  if (state.ref_count_ == 0) {
+    if (state.observer_) {
+      state.voe_base_->DeRegisterVoiceEngineObserver();
+      delete state.observer_;
+      state.observer_ = nullptr;
+    }
+    state.voe_base_->Release();
+    voice_engines_.erase(it);
+  }
+}
+
+bool VoiceEngines::GetTypingNoiseDetected(VoiceEngine* voice_engine) const {
+  RTC_DCHECK(thread_checker_.CalledOnValidThread());
+  auto it = voice_engines_.find(voice_engine);
+  RTC_DCHECK(it != voice_engines_.end());
+  if (it->second.observer_) {
+    return it->second.observer_->typing_noise_detected();
+  } else {
+    return false;
+  }
+}
+}  // namespace internal
+}  // namespace webrtc