webrtc_m130/modules/audio_processing/optionally_built_submodule_creators.h
Alessio Bazzica efbe3af366 Transient Suppressor (TS): add alternative VAD modes
It is now required to specify which VAD is used to compute the speech
probability passed when `TransientSuppressor::Suppress()` is called.
In this way, it is possible to adapt parameters and/or logic of a
`TransientSuppressor` implementation to the behavior of the used
VAD. This CL also adds a "no VAD" mode option, which ignores the speech
probability argument passed when `Suppress()` and always applies mild
suppression to preserve transparency.

Finally, this CL adds a field trial to choose which VAD is used by
APM for transient suppression. Wiring the RNN VAD to TS will be done
in a follow-up CL.

Bug: webrtc:13663
Change-Id: I21ed49f91875a4ee0f04db97ea87c0dbc3db7f8a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/250962
Reviewed-by: Hanna Silen <silen@webrtc.org>
Commit-Queue: Alessio Bazzica <alessiob@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#36485}
2022-04-07 16:27:32 +00:00

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/*
* Copyright (c) 2020 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.
*/
#ifndef MODULES_AUDIO_PROCESSING_OPTIONALLY_BUILT_SUBMODULE_CREATORS_H_
#define MODULES_AUDIO_PROCESSING_OPTIONALLY_BUILT_SUBMODULE_CREATORS_H_
#include <memory>
#include "modules/audio_processing/transient/transient_suppressor.h"
namespace webrtc {
// These overrides are only to be used for testing purposes.
// Each flag emulates a preprocessor macro to exclude a submodule of APM from
// the build, e.g. WEBRTC_EXCLUDE_TRANSIENT_SUPPRESSOR. If the corresponding
// flag `transient_suppression` is enabled, then the creators will return
// nullptr instead of a submodule instance, as if the macro had been defined.
struct ApmSubmoduleCreationOverrides {
bool transient_suppression = false;
};
// Creates a transient suppressor.
// Will instead return nullptr if one of the following is true:
// * WEBRTC_EXCLUDE_TRANSIENT_SUPPRESSOR is defined
// * The corresponding override in `overrides` is enabled.
std::unique_ptr<TransientSuppressor> CreateTransientSuppressor(
const ApmSubmoduleCreationOverrides& overrides,
TransientSuppressor::VadMode vad_mode);
} // namespace webrtc
#endif // MODULES_AUDIO_PROCESSING_OPTIONALLY_BUILT_SUBMODULE_CREATORS_H_