b5c48b97f6
Ongoing fixes and improvements, transient suppressor is gone. Also, dropping isac because it doesn't seem to be useful, and is just build system deadweight now. Upstream references: Version: 131.0.6778.200 WebRTC: 79aff54b0fa9238ce3518dd9eaf9610cd6f22e82 Chromium: 2a19506ad24af755f2a215a4c61f775393e0db42
60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
/*
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* Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_AUDIO_PROCESSING_AGC2_SATURATION_PROTECTOR_BUFFER_H_
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#define MODULES_AUDIO_PROCESSING_AGC2_SATURATION_PROTECTOR_BUFFER_H_
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#include <array>
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#include <optional>
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#include "modules/audio_processing/agc2/agc2_common.h"
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namespace webrtc {
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// Ring buffer for the saturation protector which only supports (i) push back
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// and (ii) read oldest item.
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class SaturationProtectorBuffer {
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public:
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SaturationProtectorBuffer();
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~SaturationProtectorBuffer();
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bool operator==(const SaturationProtectorBuffer& b) const;
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inline bool operator!=(const SaturationProtectorBuffer& b) const {
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return !(*this == b);
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}
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// Maximum number of values that the buffer can contain.
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int Capacity() const;
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// Number of values in the buffer.
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int Size() const;
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void Reset();
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// Pushes back `v`. If the buffer is full, the oldest value is replaced.
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void PushBack(float v);
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// Returns the oldest item in the buffer. Returns an empty value if the
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// buffer is empty.
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std::optional<float> Front() const;
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private:
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int FrontIndex() const;
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// `buffer_` has `size_` elements (up to the size of `buffer_`) and `next_` is
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// the position where the next new value is written in `buffer_`.
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std::array<float, kSaturationProtectorBufferSize> buffer_;
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int next_ = 0;
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int size_ = 0;
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};
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} // namespace webrtc
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#endif // MODULES_AUDIO_PROCESSING_AGC2_SATURATION_PROTECTOR_BUFFER_H_
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