commit 5feb30e85f93f8cc0add8666efcae37db8b74589
author Alex Loiko <aleloi@webrtc.org> Mon Apr 16 13:52:32 2018 +0200
committer Commit Bot <commit-bot@chromium.org> Mon Apr 16 12:25:48 2018 +0000
tree 0ea5bdb5b0843437b2c4d47ec003010384dbcc59
parent 28111d7fa0b94e37a5eeba616eb806c65b12560e

Options and settings for the Pre-amplifier.

Add configuration fields for the pre-amplifier in the Audio Processing
Module. Also add flags and settings for the pre-amplifier in
audioproc_f.

Also make the setting stored in Aec Dumps. And make the setting
applied when playing back Aec Dumps in audioproc_f.

Bug: webrtc:9138
Change-Id: I4e59df200e1ebc56f06fae74ebf17d85858958a3
Reviewed-on: https://webrtc-review.googlesource.com/69560
Reviewed-by: Oleh Prypin <oprypin@webrtc.org>
Reviewed-by: Per Åhgren <peah@webrtc.org>
Reviewed-by: Alessio Bazzica <alessiob@webrtc.org>
Commit-Queue: Alex Loiko <aleloi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22876}

modules/audio_processing/include/audio_processing.h

diff --git a/modules/audio_processing/include/audio_processing.h b/modules/audio_processing/include/audio_processing.h
index 027010b..379a664 100644
--- a/modules/audio_processing/include/audio_processing.h
+++ b/modules/audio_processing/include/audio_processing.h
@@ -270,6 +270,13 @@
       bool enabled = false;
     } high_pass_filter;
 
+    // Enabled the pre-amplifier. It amplifies the capture signal
+    // before any other processing is done.
+    struct PreAmplifier {
+      bool enabled = false;
+      float fixed_gain_factor = 1.f;
+    } pre_amplifier;
+
     // Enables the next generation AGC functionality. This feature
     // replaces the standard methods of gain control in the previous
     // AGC. This functionality is currently only partially