Adding full initial version of delay estimation functionality in echo canceller 3

webrtc/modules/audio_processing/aec3/block_processor.cc

 /*
  *  Copyright (c) 2016 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/aec3/block_processor.h"
@@ skipping 46 matching lines @@
 BlockProcessorImpl::BlockProcessorImpl(
     int sample_rate_hz,
     std::unique_ptr<RenderDelayBuffer> render_buffer,
     std::unique_ptr<RenderDelayController> delay_controller,
     std::unique_ptr<EchoRemover> echo_remover)
     : data_dumper_(
           new ApmDataDumper(rtc::AtomicOps::Increment(&instance_count_))),
       sample_rate_hz_(sample_rate_hz),
       render_buffer_(std::move(render_buffer)),
       delay_controller_(std::move(delay_controller)),
-      echo_remover_(std::move(echo_remover)) {}
+      echo_remover_(std::move(echo_remover)) {
+  RTC_DCHECK(ValidFullBandRate(sample_rate_hz_));
+}
 
 BlockProcessorImpl::~BlockProcessorImpl() = default;
 
 void BlockProcessorImpl::ProcessCapture(
     bool echo_path_gain_change,
     bool capture_signal_saturation,
     std::vector<std::vector<float>>* capture_block) {
   RTC_DCHECK(capture_block);
   RTC_DCHECK_EQ(NumBandsForRate(sample_rate_hz_), capture_block->size());
   RTC_DCHECK_EQ(kBlockSize, (*capture_block)[0].size());
@@ skipping 66 matching lines @@
     int sample_rate_hz,
     std::unique_ptr<RenderDelayBuffer> render_buffer,
     std::unique_ptr<RenderDelayController> delay_controller,
     std::unique_ptr<EchoRemover> echo_remover) {
   return new BlockProcessorImpl(sample_rate_hz, std::move(render_buffer),
                                 std::move(delay_controller),
                                 std::move(echo_remover));
 }
 
 }  // namespace webrtc