Make AudioVector::operator[] inline and modify index calculation

webrtc/modules/audio_coding/neteq/audio_vector.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 266 matching lines @@
 // Returns the number of elements in this AudioVector.
 size_t AudioVector::Size() const {
   return (end_index_ + capacity_ - begin_index_) % capacity_;
 }
 
 // Returns true if this AudioVector is empty.
 bool AudioVector::Empty() const {
   return begin_index_ == end_index_;
 }
 
-const int16_t& AudioVector::operator[](size_t index) const {
-  return array_[(begin_index_ + index) % capacity_];
-}
-
-int16_t& AudioVector::operator[](size_t index) {
-  return array_[(begin_index_ + index) % capacity_];
-}
-
 void AudioVector::Reserve(size_t n) {
   if (capacity_ > n)
     return;
   const size_t length = Size();
   // Reserve one more sample to remove the ambiguity between empty vector and
   // full vector. Therefore |begin_index_| == |end_index_| indicates empty
   // vector, and |begin_index_| == (|end_index_| + 1) % capacity indicates
   // full vector.
   std::unique_ptr<int16_t[]> temp_array(new int16_t[n + 1]);
   CopyTo(length, 0, temp_array.get());
@@ skipping 80 matching lines @@
   if (remaining_zero_length > 0)
     memset(&array_[capacity_ - remaining_zero_length], 0,
            remaining_zero_length * sizeof(int16_t));
   begin_index_ = (begin_index_ + capacity_ - length) % capacity_;
 
   if (position > 0)
     PushFront(temp_array.get(), position);
 }
 
 }  // namespace webrtc