AGC2 RNN VAD: safe SIMD optimizations scheme + AVX2 kill switch
In preparation for adding AVX2 code, a safe scheme to support
different SIMD optimizations is added.
Safety features:
- AVX2 kill switch to stop using it even if supported by the
architecture
- struct indicating the available CPU features propagated from
AGC2 to each component; in this way
- better control over the unit tests
- no need to propagate individual kill switches but just
set to false features that are turned off
Note that (i) this CL does not change the performance of the RNN VAD
and (ii) no AVX2 optimization is added yet.
Bug: webrtc:10480
Change-Id: I0e61f3311ecd140f38369cf68b6e5954f3dc1f5a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/193140
Reviewed-by: Per Åhgren <peah@webrtc.org>
Commit-Queue: Alessio Bazzica <alessiob@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32739}
diff --git a/modules/audio_processing/include/audio_processing.h b/modules/audio_processing/include/audio_processing.h
index e85ac0c..b96ce92 100644
--- a/modules/audio_processing/include/audio_processing.h
+++ b/modules/audio_processing/include/audio_processing.h
@@ -350,10 +350,10 @@
enum LevelEstimator { kRms, kPeak };
bool enabled = false;
- struct {
+ struct FixedDigital {
float gain_db = 0.f;
} fixed_digital;
- struct {
+ struct AdaptiveDigital {
bool enabled = false;
float vad_probability_attack = 1.f;
LevelEstimator level_estimator = kRms;
@@ -365,6 +365,7 @@
int gain_applier_adjacent_speech_frames_threshold = 1;
float max_gain_change_db_per_second = 3.f;
float max_output_noise_level_dbfs = -50.f;
+ bool avx2_allowed = true;
} adaptive_digital;
} gain_controller2;