commit 0c0c602653d22281705c0bd61cbab5a8c9429462
author Alessio Bazzica <alessiob@webrtc.org> Wed Sep 07 15:15:52 2022 +0200
committer WebRTC LUCI CQ <webrtc-scoped@luci-project-accounts.iam.gserviceaccount.com> Fri Sep 09 16:38:26 2022 +0000
tree ca66852c6c1f777937eb9a410cdf7eecf2073e3d
parent a5aaedb32712abf2616a0069421ed0ec2efed9f9

APM: refactor emulated input volume for capture level adjustment

Switching to an AGC implementation agnostic solution for the input
volume emulation functionality offered by the
`capture_levels_adjuster` sub-module.

This CL also fixes a (silent) bug due to which, when the input
volume is emulated via the capture adjuster sub-module, AGC2
reads an incorrect value for the applied input volume.

Tested: audioproc_f with `--analog_mic_gain_emulation 1` used
to verify bit-exactness for one Wav file and one AEC dump for
which the input volume varies.

Bug: webrtc:7494, b/241923537
Change-Id: Ide3085f9a5dfd85888ad812ebd56faa175fb2ba7
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/273902
Reviewed-by: Per Åhgren <peah@webrtc.org>
Commit-Queue: Alessio Bazzica <alessiob@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#38053}

modules/audio_processing/audio_processing_impl.h

diff --git a/modules/audio_processing/audio_processing_impl.h b/modules/audio_processing/audio_processing_impl.h
index 20135de..a535310 100644
--- a/modules/audio_processing/audio_processing_impl.h
+++ b/modules/audio_processing/audio_processing_impl.h
@@ -160,6 +160,8 @@
   FRIEND_TEST_ALL_PREFIXES(ApmWithSubmodulesExcludedTest,
                            BitexactWithDisabledModules);
 
+  void set_stream_analog_level_locked(int level)
+      RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_capture_);
   int recommended_stream_analog_level_locked() const
       RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_capture_);