Preparational work for an upcoming addition of a threadchecking scheme for APM

webrtc/modules/audio_processing/voice_detection_impl.cc

 /*
  *  Copyright (c) 2012 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.
  */
 
@@ skipping 20 matching lines @@
       return 1;
     case VoiceDetection::kHighLikelihood:
       return 0;
   }
   assert(false);
   return -1;
 }
 }  // namespace
 
 VoiceDetectionImpl::VoiceDetectionImpl(const AudioProcessing* apm,
-                                       CriticalSectionWrapper* crit)
-  : ProcessingComponent(),
-    apm_(apm),
-    crit_(crit),
-    stream_has_voice_(false),
-    using_external_vad_(false),
-    likelihood_(kLowLikelihood),
-    frame_size_ms_(10),
-    frame_size_samples_(0) {}
+                                       CriticalSectionWrapper* crit,
+                                       rtc::ThreadChecker* capture_thread)
+    : ProcessingComponent(),
+      apm_(apm),
+      crit_(crit),
+      capture_thread_(capture_thread),
+      stream_has_voice_(false),
+      using_external_vad_(false),
+      likelihood_(kLowLikelihood),
+      frame_size_ms_(10),
+      frame_size_samples_(0) {}
 
 VoiceDetectionImpl::~VoiceDetectionImpl() {}
 
 int VoiceDetectionImpl::ProcessCaptureAudio(AudioBuffer* audio) {
+  RTC_DCHECK(capture_thread_->CalledOnValidThread());
   if (!is_component_enabled()) {
     return apm_->kNoError;
   }
 
   if (using_external_vad_) {
     using_external_vad_ = false;
     return apm_->kNoError;
   }
   assert(audio->num_frames_per_band() <= 160);
 
@@ skipping 103 matching lines @@
 int VoiceDetectionImpl::num_handles_required() const {
   return 1;
 }
 
 int VoiceDetectionImpl::GetHandleError(void* handle) const {
   // The VAD has no get_error() function.
   assert(handle != NULL);
   return apm_->kUnspecifiedError;
 }
 }  // namespace webrtc