ACM/NetEq: Restructure how post-decode VAD is enabled

webrtc/modules/audio_coding/neteq/include/neteq.h

 /*
  *  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 63 matching lines @@
   enum BackgroundNoiseMode {
     kBgnOn,    // Default behavior with eternal noise.
     kBgnFade,  // Noise fades to zero after some time.
     kBgnOff    // Background noise is always zero.
   };
 
   struct Config {
     Config()
         : sample_rate_hz(16000),
           enable_audio_classifier(false),
+          enable_post_decode_vad(false),
           max_packets_in_buffer(50),
           // |max_delay_ms| has the same effect as calling SetMaximumDelay().
           max_delay_ms(2000),
           background_noise_mode(kBgnOff),
           playout_mode(kPlayoutOn),
           enable_fast_accelerate(false) {}
 
     std::string ToString() const;
 
     int sample_rate_hz;  // Initial value. Will change with input data.
     bool enable_audio_classifier;
+    bool enable_post_decode_vad;
     size_t max_packets_in_buffer;
     int max_delay_ms;
     BackgroundNoiseMode background_noise_mode;
     NetEqPlayoutMode playout_mode;
     bool enable_fast_accelerate;
   };
 
   enum ReturnCodes {
     kOK = 0,
     kFail = -1,
@@ skipping 181 matching lines @@
 
  protected:
   NetEq() {}
 
  private:
   RTC_DISALLOW_COPY_AND_ASSIGN(NetEq);
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_AUDIO_CODING_NETEQ_INCLUDE_NETEQ_H_