audio: webrtc: wire VAD/NS/AEC/NS2 modules into build system

Register all four WebRTC audio processing modules in the SOF build
system:

Kconfig (src/audio/Kconfig):
  - rsource the four module Kconfig files (alphabetical order)

CMakeLists (src/audio/CMakeLists.txt):
  - add_subdirectory() guards for COMP_WEBRTC_{VAD,NS,AEC,NS2}

UUID registry (uuid-registry.txt):
  - c790b11d-5d14-e54e-be36ba4ad732cc14  webrtc_vad
  - 0fc8faef-945f-004b-8d5f315047f1136a  webrtc_ns
  - e5da7b5b-133a-ba46-b517651d6300bb83  webrtc_aec
  - eacfacdc-2a87-c942-97e894c917a740db  webrtc_ns2

west.yml:
  - Add remotes: libfvad (dpirch), webrtc-apm (freedesktop.org),
    rnnoise (xiph)
  - Add project entries with pinned revisions:
      libfvad  @ 532ab666c20d  → modules/audio/libfvad
      webrtc-apm v0.3.1        → modules/audio/webrtc-apm
      rnnoise  @ 70f1d256      → modules/audio/rnnoise

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>

Author: lrgirdwo

src/audio/CMakeLists.txt

@@ -110,6 +110,18 @@ if(NOT CONFIG_COMP_MODULE_SHARED_LIBRARY_BUILD)
 	if(CONFIG_COMP_VOLUME)
 		add_subdirectory(volume)
 	endif()
+	if(CONFIG_COMP_WEBRTC_VAD)
+		add_subdirectory(webrtc_vad)
+	endif()
+	if(CONFIG_COMP_WEBRTC_NS)
+		add_subdirectory(webrtc_ns)
+	endif()
+	if(CONFIG_COMP_WEBRTC_AEC)
+		add_subdirectory(webrtc_aec)
+	endif()
+	if(CONFIG_COMP_WEBRTC_NS2)
+		add_subdirectory(webrtc_ns2)
+	endif()
 	if(CONFIG_DTS_CODEC)
 		add_subdirectory(codec)
 	endif()

src/audio/Kconfig

@@ -162,6 +162,10 @@ rsource "tensorflow/Kconfig"
 rsource "tone/Kconfig"
 rsource "up_down_mixer/Kconfig"
 rsource "volume/Kconfig"
+rsource "webrtc_vad/Kconfig"
+rsource "webrtc_ns/Kconfig"
+rsource "webrtc_aec/Kconfig"
+rsource "webrtc_ns2/Kconfig"
 # --- End Kconfig Sources (alphabetical order) ---
 
 rsource "level_multiplier/Kconfig"

uuid-registry.txt

@@ -179,6 +179,10 @@ e93326d8-0d14-4bf0-bcb9e063d3d80136 twb_sched
 b77e677e-5ff4-4188-af14fba8bdbf8682 volume
 8a171323-94a3-4e1d-afe9fe5dbaa4c393 volume4
 1028070e-04e8-46ab-8d8110a0116ce738 wait
+c790b11d-5d14-e54e-be36ba4ad732cc14 webrtc_vad
+0fc8faef-945f-004b-8d5f315047f1136a webrtc_ns
+e5da7b5b-133a-ba46-b517651d6300bb83 webrtc_aec
+eacfacdc-2a87-c942-97e894c917a740db webrtc_ns2
 d944281a-afe9-4695-a043d7f62b89538e waves
 13c8bc59-c4fa-4ad1-b93ace97cd30acc7 wdt
 300aaad4-45d2-8313-25d05e1d6086cdd1 zephyr

west.yml

@@ -20,6 +20,20 @@ manifest:
     # libshine fixed-point MP3 encoder for FFMPEG_ENC_MP3 (upstream mirror).
     - name: shine
       url-base: https://github.com/toots
+    # libfvad: pure-C BSD-3 extraction of the WebRTC GMM VAD for the
+    # webrtc_vad module (CONFIG_COMP_WEBRTC_VAD). Cross-built by
+    # src/audio/webrtc_vad/webrtc_vad.cmake.
+    - name: libfvad
+      url-base: https://github.com/dpirch
+    # webrtc-apm: webrtc-audio-processing 0.3.x source used for the classic
+    # WebRTC Noise Suppression module (CONFIG_COMP_WEBRTC_NS). Pure-C subset,
+    # no abseil. Cross-built by src/audio/webrtc_ns/webrtc_ns.cmake.
+    - name: webrtc-apm
+      url-base: https://gitlab.freedesktop.org/gstreamer
+    # rnnoise: xiph/rnnoise deep-learning noise suppressor used by webrtc_ns2.
+    # Pure C, BSD-3-Clause. Pinned at Feb-2025 tip.
+    - name: rnnoise
+      url-base: https://github.com/xiph
 
   # When upgrading projects here please run git log --oneline in the
   # project and if not too long then include the output in your commit
@@ -68,6 +82,31 @@ manifest:
       revision: ab5e3526b64af1a2eaa43aa6f441a7312e013519
       remote: shine
 
+    # libfvad: standalone WebRTC GMM VAD for the webrtc_vad module.
+    # Cross-built by src/audio/webrtc_vad/webrtc_vad.cmake.
+    - name: libfvad
+      repo-path: libfvad
+      path: modules/audio/libfvad
+      revision: 532ab666c20d3cfda38bca63abbb0f152706c369
+      remote: libfvad
+
+    # webrtc-audio-processing 0.3.1 — classic WebRTC APM for webrtc_ns module.
+    # Pure-C NS subset only; no C++ or abseil dependency.
+    # Cross-built by src/audio/webrtc_ns/webrtc_ns.cmake.
+    - name: webrtc-apm
+      repo-path: webrtc-audio-processing
+      path: modules/audio/webrtc-apm
+      revision: v0.3.1
+      remote: webrtc-apm
+
+    # rnnoise — xiph/rnnoise deep-learning noise suppressor (webrtc_ns2).
+    # Pure C, BSD-3-Clause. Pinned at Feb-2025 tip (post RNNoise 2.0 refactor).
+    - name: rnnoise
+      repo-path: rnnoise
+      path: modules/audio/rnnoise
+      revision: 70f1d256acd4b34a572f999a05c87bf00b67730d
+      remote: rnnoise
+
     - name: zephyr
       repo-path: zephyr
       revision: ef5cfd369f4a0ab3601db9a23c1da8c406cc1a72