Adding audio RepetitionDetector in AudioProcessingModule.

webrtc/modules/audio_processing/audio_processing_impl.cc

Index: webrtc/modules/audio_processing/audio_processing_impl.cc
diff --git a/webrtc/modules/audio_processing/audio_processing_impl.cc b/webrtc/modules/audio_processing/audio_processing_impl.cc
index ff4128b6ed4485df0d5abef47a2ff006da53a6b5..bdeafb2f2d70d93c659b1e0badedf3f387c4cffb 100644
--- a/webrtc/modules/audio_processing/audio_processing_impl.cc
+++ b/webrtc/modules/audio_processing/audio_processing_impl.cc
@@ -34,6 +34,7 @@ extern "C" {
 #include "webrtc/modules/audio_processing/level_estimator_impl.h"
 #include "webrtc/modules/audio_processing/noise_suppression_impl.h"
 #include "webrtc/modules/audio_processing/processing_component.h"
+#include "webrtc/modules/audio_processing/repetition_detector.h"
 #include "webrtc/modules/audio_processing/transient/transient_suppressor.h"
 #include "webrtc/modules/audio_processing/voice_detection_impl.h"
 #include "webrtc/modules/interface/module_common_types.h"
@@ -214,6 +215,7 @@ AudioProcessingImpl::AudioProcessingImpl(const Config& config,
       beamformer_enabled_(config.Get<Beamforming>().enabled),
       beamformer_(beamformer),
       array_geometry_(config.Get<Beamforming>().array_geometry),
+      repetition_detector_(new RepetitionDetector()),
       intelligibility_enabled_(config.Get<Intelligibility>().enabled) {
   echo_cancellation_ = new EchoCancellationImpl(this, crit_);
   component_list_.push_back(echo_cancellation_);
@@ -530,6 +532,11 @@ int AudioProcessingImpl::ProcessStream(const float* const* src,
   if (samples_per_channel != input_stream.num_frames()) {
     return kBadDataLengthError;
   }
+
+  // Check only one channel.
+  repetition_detector_->Detect(src[0], samples_per_channel, 1,
+                               input_sample_rate_hz);
+
   return ProcessStream(src, input_stream, output_stream, dest);
 }