Deactivated the intelligibility enhancement functionality by default

webrtc/modules/audio_processing/BUILD.gn

 # Copyright (c) 2014 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.
 
 import("//build/config/arm.gni")
 import("//third_party/protobuf/proto_library.gni")
 import("../../build/webrtc.gni")
 
 declare_args() {
   # Outputs some low-level debug files.
   aec_debug_dump = false
 
   # Disables the usual mode where we trust the reported system delay
   # values the AEC receives. The corresponding define is set appropriately
   # in the code, but it can be force-enabled here for testing.
   aec_untrusted_delay_for_testing = false
+
+  # Chooses whether the intelligibility enhancer should be used.
+  intelligibility_enhancer = false
 }
 
 source_set("audio_processing") {
   sources = [
     "aec/aec_core.cc",
     "aec/aec_core.h",
     "aec/aec_core_optimized_methods.h",
     "aec/aec_rdft.cc",
     "aec/aec_rdft.h",
     "aec/aec_resampler.cc",
@@ skipping 36 matching lines @@
     "echo_cancellation_impl.h",
     "echo_control_mobile_impl.cc",
     "echo_control_mobile_impl.h",
     "gain_control_for_experimental_agc.cc",
     "gain_control_for_experimental_agc.h",
     "gain_control_impl.cc",
     "gain_control_impl.h",
     "high_pass_filter_impl.cc",
     "high_pass_filter_impl.h",
     "include/audio_processing.h",
-    "intelligibility/intelligibility_enhancer.cc",
-    "intelligibility/intelligibility_enhancer.h",
-    "intelligibility/intelligibility_utils.cc",
-    "intelligibility/intelligibility_utils.h",
     "level_controller/biquad_filter.cc",
     "level_controller/biquad_filter.h",
     "level_controller/down_sampler.cc",
     "level_controller/down_sampler.h",
     "level_controller/gain_applier.cc",
     "level_controller/gain_applier.h",
     "level_controller/gain_selector.cc",
     "level_controller/gain_selector.h",
     "level_controller/lc_constants.h",
     "level_controller/level_controller.cc",
@@ skipping 84 matching lines @@
 
   if (aec_untrusted_delay_for_testing) {
     defines += [ "WEBRTC_UNTRUSTED_DELAY" ]
   }
 
   if (rtc_enable_protobuf) {
     defines += [ "WEBRTC_AUDIOPROC_DEBUG_DUMP" ]
     deps += [ ":audioproc_debug_proto" ]
   }
 
+  if (intelligibility_enhancer) {
+    defines += [ "WEBRTC_INTELLIGIBILITY_ENHANCER=1" ]
+    sources += [
+      "intelligibility/intelligibility_enhancer.cc",
+      "intelligibility/intelligibility_enhancer.h",
+      "intelligibility/intelligibility_utils.cc",
+      "intelligibility/intelligibility_utils.h",
+    ]
+  } else {
+    defines += [ "WEBRTC_INTELLIGIBILITY_ENHANCER=0" ]
+  }
+
   if (rtc_prefer_fixed_point) {
     defines += [ "WEBRTC_NS_FIXED" ]
     sources += [
       "ns/noise_suppression_x.c",
       "ns/noise_suppression_x.h",
       "ns/nsx_core.c",
       "ns/nsx_core.h",
       "ns/nsx_defines.h",
     ]
     if (current_cpu == "mipsel") {
@@ skipping 249 matching lines @@
         "test/protobuf_utils.cc",
         "test/protobuf_utils.h",
       ]
 
       deps = [
         ":audioproc_debug_proto",
       ]
     }
   }
 }