Conversational Speech tool, MultiEndCall class and unit tests via mocking

webrtc/modules/audio_processing/test/conversational_speech/multiend_call.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/multiend_call.h"
+
+#include <utility>
+
+#include "webrtc/base/pathutils.h"
+
+namespace webrtc {
+namespace test {
+namespace conversational_speech {
+
+MultiEndCall::MultiEndCall(
+    rtc::ArrayView<const Turn> timing, const std::string& audiotracks_path,
+    std::unique_ptr<WavReaderAbstractFactory> wavreader_abstract_factory)
+        : timing_(timing), audiotracks_path_(audiotracks_path),
+          wavreader_abstract_factory_(std::move(wavreader_abstract_factory)) {
+  FindSpeakerNames();
+  CreateAudioTrackReaders();
+  CheckTiming();
+}
+
+MultiEndCall::~MultiEndCall() = default;
+
+const std::set<std::string>& MultiEndCall::speaker_names() const {
+  return speaker_names_;
+}
+
+const std::map<std::string, std::unique_ptr<WavReaderInterface>>&
+    MultiEndCall::audiotrack_readers() const {
+  return audiotrack_readers_;
+}
+
+void MultiEndCall::FindSpeakerNames() {
+  RTC_DCHECK(speaker_names_.empty());
+  for (const Turn& turn : timing_) {
+    speaker_names_.insert(turn.speaker_name);
+  }
+}
+
+void MultiEndCall::CreateAudioTrackReaders() {
+  RTC_DCHECK(audiotrack_readers_.empty());
+  for (const Turn& turn : timing_) {
+    auto it = audiotrack_readers_.find(turn.audiotrack_file_name);
+    if (it != audiotrack_readers_.end())
+      continue;
+
+    // Instance Pathname to retrieve the full path to the audiotrack file.
+    const rtc::Pathname audiotrack_file_path(
+        audiotracks_path_, turn.audiotrack_file_name);
+
+    // Map the audiotrack file name to a new instance of WavReaderInterface.
+    std::unique_ptr<WavReaderInterface> wavreader =
+        wavreader_abstract_factory_->Create(audiotrack_file_path.pathname());
+    audiotrack_readers_.insert(std::make_pair(
+        turn.audiotrack_file_name, std::move(wavreader)));
+  }
+}
+
+void MultiEndCall::CheckTiming() {
+  // TODO(alessiob): use audiotrack lengths and offset to check whether the
+  // timing is valid.
+}
+
+}  // namespace conversational_speech
+}  // namespace test
+}  // namespace webrtc