Using ring buffer for AudioVector in NetEq.

webrtc/modules/audio_coding/neteq/background_noise.cc

 /*
  *  Copyright (c) 2012 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.
  */
 
@@ skipping 41 matching lines @@
 
   int32_t auto_correlation[kMaxLpcOrder + 1];
   int16_t fiter_output[kMaxLpcOrder + kResidualLength];
   int16_t reflection_coefficients[kMaxLpcOrder];
   int16_t lpc_coefficients[kMaxLpcOrder + 1];
 
   for (size_t channel_ix = 0; channel_ix < num_channels_; ++channel_ix) {
     ChannelParameters& parameters = channel_parameters_[channel_ix];
     int16_t temp_signal_array[kVecLen + kMaxLpcOrder] = {0};
     int16_t* temp_signal = &temp_signal_array[kMaxLpcOrder];
-    memcpy(temp_signal,
-           &input[channel_ix][input.Size() - kVecLen],
-           sizeof(int16_t) * kVecLen);
-
+    input[channel_ix].CopyTo(kVecLen, input.Size() - kVecLen, temp_signal);
     int32_t sample_energy = CalculateAutoCorrelation(temp_signal, kVecLen,
                                                      auto_correlation);
 
     if ((!vad.running() &&
         sample_energy < parameters.energy_update_threshold) ||
         (vad.running() && !vad.active_speech())) {
       // Generate LPC coefficients.
       if (auto_correlation[0] > 0) {
         // Regardless of whether the filter is actually updated or not,
         // update energy threshold levels, since we have in fact observed
@@ skipping 173 matching lines @@
   // Add 13 to the |scale_shift_|, since the random numbers table is in
   // Q13.
   // TODO(hlundin): Move the "13" to where the |scale_shift_| is used?
   parameters.scale_shift =
       static_cast<int16_t>(13 + ((kLogResidualLength + norm_shift) / 2));
 
   initialized_ = true;
 }
 
 }  // namespace webrtc