Make an enum class out of NetEqDecoder, and hide the neteq_decoders_ table

webrtc/modules/audio_coding/neteq/delay_manager.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 355 matching lines @@
   // |higher_limit| is equal to |target_level_|, but should at
   // least be 20 ms higher than |lower_limit_|.
   *higher_limit = std::max(target_level_, *lower_limit + window_20ms);
 }
 
 int DelayManager::TargetLevel() const {
   return target_level_;
 }
 
 void DelayManager::LastDecoderType(NetEqDecoder decoder_type) {
-  if (decoder_type == kDecoderAVT ||
-      decoder_type == kDecoderCNGnb ||
-      decoder_type == kDecoderCNGwb ||
-      decoder_type == kDecoderCNGswb32kHz ||
-      decoder_type == kDecoderCNGswb48kHz) {
+  if (decoder_type == NetEqDecoder::kDecoderAVT ||
+      decoder_type == NetEqDecoder::kDecoderCNGnb ||
+      decoder_type == NetEqDecoder::kDecoderCNGwb ||
+      decoder_type == NetEqDecoder::kDecoderCNGswb32kHz ||
+      decoder_type == NetEqDecoder::kDecoderCNGswb48kHz) {
     last_pack_cng_or_dtmf_ = 1;
   } else if (last_pack_cng_or_dtmf_ != 0) {
     last_pack_cng_or_dtmf_ = -1;
   }
 }
 
 bool DelayManager::SetMinimumDelay(int delay_ms) {
   // Minimum delay shouldn't be more than maximum delay, if any maximum is set.
   // Also, if possible check |delay| to less than 75% of
   // |max_packets_in_buffer_|.
@@ skipping 27 matching lines @@
 int DelayManager::base_target_level() const { return base_target_level_; }
 void DelayManager::set_streaming_mode(bool value) { streaming_mode_ = value; }
 int DelayManager::last_pack_cng_or_dtmf() const {
   return last_pack_cng_or_dtmf_;
 }
 
 void DelayManager::set_last_pack_cng_or_dtmf(int value) {
   last_pack_cng_or_dtmf_ = value;
 }
 }  // namespace webrtc