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Diffstat (limited to 'third_party/libwebrtc/modules/audio_processing/agc2/noise_level_estimator.h')
-rw-r--r-- | third_party/libwebrtc/modules/audio_processing/agc2/noise_level_estimator.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_processing/agc2/noise_level_estimator.h b/third_party/libwebrtc/modules/audio_processing/agc2/noise_level_estimator.h new file mode 100644 index 0000000000..9f3b957486 --- /dev/null +++ b/third_party/libwebrtc/modules/audio_processing/agc2/noise_level_estimator.h @@ -0,0 +1,36 @@ +/* + * Copyright (c) 2016 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_AGC2_NOISE_LEVEL_ESTIMATOR_H_ +#define MODULES_AUDIO_PROCESSING_AGC2_NOISE_LEVEL_ESTIMATOR_H_ + +#include <memory> + +#include "modules/audio_processing/include/audio_frame_view.h" + +namespace webrtc { +class ApmDataDumper; + +// Noise level estimator interface. +class NoiseLevelEstimator { + public: + virtual ~NoiseLevelEstimator() = default; + // Analyzes a 10 ms `frame`, updates the noise level estimation and returns + // the value for the latter in dBFS. + virtual float Analyze(const AudioFrameView<const float>& frame) = 0; +}; + +// Creates a noise level estimator based on noise floor detection. +std::unique_ptr<NoiseLevelEstimator> CreateNoiseFloorEstimator( + ApmDataDumper* data_dumper); + +} // namespace webrtc + +#endif // MODULES_AUDIO_PROCESSING_AGC2_NOISE_LEVEL_ESTIMATOR_H_ |