Conversational speech tool, simualtor + unit tests

webrtc/modules/audio_processing/test/conversational_speech/multiend_call.h

Index: webrtc/modules/audio_processing/test/conversational_speech/multiend_call.h
diff --git a/webrtc/modules/audio_processing/test/conversational_speech/multiend_call.h b/webrtc/modules/audio_processing/test/conversational_speech/multiend_call.h
index dd03a07e7a0014b722b9adbc14cad8cadbbbf0cd..bdd42c34bebf8ab8ca6583087b0884ba84abd6ea 100644
--- a/webrtc/modules/audio_processing/test/conversational_speech/multiend_call.h
+++ b/webrtc/modules/audio_processing/test/conversational_speech/multiend_call.h
@@ -54,6 +54,7 @@ class MultiEndCall {
   const std::map<std::string, std::unique_ptr<WavReaderInterface>>&
       audiotrack_readers() const;
   bool valid() const;
+  int sample_rate() const;

[minyue-webrtc, 2017/05/16 15:05:16]

can put getter function inline

int sample_rate_hz() const { return sample_rate_hz_; }

[AleBzk, 2017/05/17 12:49:38]

Done.

   size_t total_duration_samples() const;
   const std::vector<SpeakingTurn>& speaking_turns() const;
 
@@ -61,8 +62,10 @@ class MultiEndCall {
   // Finds unique speaker names.
   void FindSpeakerNames();
 
-  // Creates one WavReader instance for each unique audiotrack.
-  void CreateAudioTrackReaders();
+  // Creates one WavReader instance for each unique audiotrack. It returns false
+  // if the audio tracks do not have the same sample rate or if they are not
+  // mono.
+  bool CreateAudioTrackReaders();
 
   // Validates the speaking turns timing information. Accepts cross-talk, but
   // only up to 2 speakers. Rejects unordered turns and self cross-talk.
@@ -75,6 +78,7 @@ class MultiEndCall {
   std::map<std::string, std::unique_ptr<WavReaderInterface>>
       audiotrack_readers_;
   bool valid_;
+  int sample_rate_;

[minyue-webrtc, 2017/05/16 15:05:16]

needs a unit, ie., sample_rate_hz_;

[AleBzk, 2017/05/17 12:49:38]

Done.

   size_t total_duration_samples_;
   std::vector<SpeakingTurn> speaking_turns_;