From 5c3ff6b60f9b7fa3389e65873993178acb72c1da Mon Sep 17 00:00:00 2001
From: Gustaf Ullberg <gustaf@webrtc.org>
Date: Tue, 19 Jan 2021 15:33:50 +0100
Subject: [PATCH] Switch to enable the HMM transparent mode classifier
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Bug: chromium:1155071,webrtc:12265,chromium:1155477
Change-Id: I9d3119e9cbfdd5d7b41de2ed0f9dec92f7bf753d
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/202258
Reviewed-by: Per Åhgren <peah@webrtc.org>
Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33037}
---
 modules/audio_processing/aec3/transparent_mode.cc | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/modules/audio_processing/aec3/transparent_mode.cc b/modules/audio_processing/aec3/transparent_mode.cc
index f18b0c1fb6..7cfa3e8eae 100644
--- a/modules/audio_processing/aec3/transparent_mode.cc
+++ b/modules/audio_processing/aec3/transparent_mode.cc
@@ -23,10 +23,8 @@ bool DeactivateTransparentMode() {
   return field_trial::IsEnabled("WebRTC-Aec3TransparentModeKillSwitch");
 }
 
-bool DeactivateTransparentModeHmm() {
-  // HMM based classifier is temporarily disabled (https://crbug.com/1155071).
-  return true;
-  // return field_trial::IsEnabled("WebRTC-Aec3TransparentModeHmmKillSwitch");
+bool ActivateTransparentModeHmm() {
+  return field_trial::IsEnabled("WebRTC-Aec3TransparentModeHmm");
 }
 
 }  // namespace
@@ -232,10 +230,10 @@ std::unique_ptr<TransparentMode> TransparentMode::Create(
   if (config.ep_strength.bounded_erl || DeactivateTransparentMode()) {
     return nullptr;
   }
-  if (DeactivateTransparentModeHmm()) {
-    return std::make_unique<LegacyTransparentModeImpl>(config);
+  if (ActivateTransparentModeHmm()) {
+    return std::make_unique<TransparentModeImpl>();
   }
-  return std::make_unique<TransparentModeImpl>();
+  return std::make_unique<LegacyTransparentModeImpl>(config);
 }
 
 }  // namespace webrtc