Add mute state field to AudioFrame.

webrtc/voice_engine/audio_level.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 32 matching lines @@
 void AudioLevel::Clear() {
   rtc::CritScope cs(&crit_sect_);
   abs_max_ = 0;
   count_ = 0;
   current_level_ = 0;
   current_level_full_range_ = 0;
 }
 
 void AudioLevel::ComputeLevel(const AudioFrame& audioFrame) {
   // Check speech level (works for 2 channels as well)
-  int16_t abs_value = WebRtcSpl_MaxAbsValueW16(
-      audioFrame.data_,
-      audioFrame.samples_per_channel_ * audioFrame.num_channels_);
+  int16_t abs_value = audioFrame.muted() ? 0 :
+      WebRtcSpl_MaxAbsValueW16(
+          audioFrame.data(),
+          audioFrame.samples_per_channel_ * audioFrame.num_channels_);
 
   // Protect member access using a lock since this method is called on a
   // dedicated audio thread in the RecordedDataIsAvailable() callback.
   rtc::CritScope cs(&crit_sect_);
 
   if (abs_value > abs_max_)
     abs_max_ = abs_value;
 
   // Update level approximately 10 times per second
   if (count_++ == kUpdateFrequency) {
@@ skipping 13 matching lines @@
     }
     current_level_ = kPermutation[position];
 
     // Decay the absolute maximum (divide by 4)
     abs_max_ >>= 2;
   }
 }
 
 }  // namespace voe
 }  // namespace webrtc