Reland of added functionality for specifying the initial signal level to use for the gain estimation

webrtc/modules/audio_processing/level_controller/level_controller_constants.h

Index: webrtc/modules/audio_processing/level_controller/level_controller_constants.h
diff --git a/webrtc/modules/audio_processing/level_controller/lc_constants.h b/webrtc/modules/audio_processing/level_controller/level_controller_constants.h
similarity index 60%
rename from webrtc/modules/audio_processing/level_controller/lc_constants.h
rename to webrtc/modules/audio_processing/level_controller/level_controller_constants.h
index 3390cc96e5e12bb97abfc15ebf72b02db23853cf..7b962d37d9f96a1b948b1a131da9bfd06b939f4f 100644
--- a/webrtc/modules/audio_processing/level_controller/lc_constants.h
+++ b/webrtc/modules/audio_processing/level_controller/level_controller_constants.h
@@ -8,15 +8,16 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_CONTROLLER_LC_CONSTANTS_H_
-#define WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_CONTROLLER_LC_CONSTANTS_H_
+#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_CONTROLLER_LEVEL_CONTROLLER_CONSTANTS_H_
+#define WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_CONTROLLER_LEVEL_CONTROLLER_CONSTANTS_H_
 
 namespace webrtc {
 
 const float kMaxLcGain = 10;
 const float kMaxLcNoisePower = 100.f * 100.f;
-const float kTargetLcPeakLevel = 0.5f * 32767.f;
+const float kTargetLcPeakLevel = 16384.f;
+const float kTargetLcPeakLeveldBFS = -6.0206f;
 
 }  // namespace webrtc
 
-#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_CONTROLLER_LC_CONSTANTS_H_
+#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_CONTROLLER_LEVEL_CONTROLLER_CONSTANTS_H_