Conversational Speech tool, WavReaderAdaptor and unit test

webrtc/modules/audio_processing/test/conversational_speech/wavreader_adaptor.cc

 /*
  *  Copyright (c) 2017 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/modules/audio_processing/test/conversational_speech/wavreader_adaptor.h"
 
 #include "webrtc/base/checks.h"
 
 namespace webrtc {
 namespace test {
 namespace conversational_speech {
 
-WavReaderAdaptor::WavReaderAdaptor(const std::string& filepath) {
-  // TODO(alessiob): implement.
-}
+WavReaderAdaptor::WavReaderAdaptor(const std::string& filepath)
+    : wav_reader_(filepath) {}
 
 WavReaderAdaptor::~WavReaderAdaptor() {}
 
 size_t WavReaderAdaptor::ReadFloatSamples(size_t num_samples, float* samples) {
-  // TODO(alessiob): implement.
-  FATAL();
-  return 0u;
+  return wav_reader_.ReadSamples(num_samples, samples);
 }
 
 size_t WavReaderAdaptor::ReadInt16Samples(
     size_t num_samples, int16_t* samples) {
-  // TODO(alessiob): implement.
-  FATAL();
-  return 0u;
+  return wav_reader_.ReadSamples(num_samples, samples);
 }
 
 int WavReaderAdaptor::sample_rate() const {
-  // TODO(alessiob): implement.
-  FATAL();
-  return 0;
+  return wav_reader_.sample_rate();
 }
 
 size_t WavReaderAdaptor::num_channels() const {
-  // TODO(alessiob): implement.
-  FATAL();
-  return 0u;
+  return wav_reader_.num_channels();
 }
 
 size_t WavReaderAdaptor::num_samples() const {
-  // TODO(alessiob): implement.
-  FATAL();
-  return 0u;
+  return wav_reader_.num_samples();
 }
 
 }  // namespace conversational_speech
 }  // namespace test
 }  // namespace webrtc