Uprev webrtc-apm to upstream WebRTC M89

This change is created by:
1. ./script/sync-apm.sh <webrtc branch-heads/4389> .
with head commit https://webrtc-review.googlesource.com/c/src/+/205280
2. Modify modules.mk files until everything compiles
3. Re-apply commit 1a11b8a webrtc-apm: Replace deprected Json::Reader call.

TEST=emerge webrtc-apm and deploy
Execute 'cras_test_client -C /dev/null --effects aec' to verify
on octopus

Change-Id: Ia213c55ab76b9bbaa2e9bdf9ff343f114d6e6ba0
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/webrtc-apm/+/2671443
Reviewed-by: Hsinyu Chao <hychao@chromium.org>
Tested-by: Hsinyu Chao <hychao@chromium.org>
Commit-Queue: Hsinyu Chao <hychao@chromium.org>
1134 files changed
tree: 34023248b6711f2740fe442037bfcbede09f2ba3
  1. absl/
  2. api/
  3. audio/
  4. common_audio/
  5. cras-config/
  6. modules/
  7. rtc_base/
  8. script/
  9. system_wrappers/
  10. third_party/
  11. common.mk
  12. common_types.h
  13. libwebrtc_apm.pc.template
  14. Makefile
  15. OWNERS
  16. pc_utils.mk
  17. README.md
  18. typedefs.h
  19. webrtc_apm.cc
  20. webrtc_apm.h


APM is the audio processing module of WebRTC project in charge of effects like echo cancellation, noise suppression, etc. The purpose of this project is to build a standalone library for Chrome OS system side audio processing.

Files content

  • scripts to copy over folders and files from upstream WebRTC project for APM and its dependencies.
  • Copied files from upstream WebRTC project. For example: common_audio, modules, rtc_base and system_wrappers.
  • webrtc_apm.cc/h C wrappers to access APM functions.
  • common-mk based makefiles to build shared library libwebrtc_apm.so


To update this package to latest upstream WebRC:

  • Run ./script/sync-apm.sh path/to/webrtc-checkout/src .
  • emerge webrtc-apm to see if anything breaks.
  • If emerge success, then we're good.
  • Otherwise look into the emerge failure, and then possibly:
    • Update sync-apm.sh to copy more files if upstream directory structure changes.
    • Update makefiles if upstream build files has changed.
    • Update webrtc-apm ebuild file if dependencies changed.
  • Create a new commit