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/*
* 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_ECHO_DETECTOR_CIRCULAR_BUFFER_H_
#define MODULES_AUDIO_PROCESSING_ECHO_DETECTOR_CIRCULAR_BUFFER_H_
#include <stddef.h>
#include <vector>
#include "absl/types/optional.h"
namespace webrtc {
// Ring buffer containing floating point values.
struct CircularBuffer {
public:
explicit CircularBuffer(size_t size);
~CircularBuffer();
void Push(float value);
absl::optional<float> Pop();
size_t Size() const { return nr_elements_in_buffer_; }
// This function fills the buffer with zeros, but does not change its size.
void Clear();
private:
std::vector<float> buffer_;
size_t next_insertion_index_ = 0;
// This is the number of elements that have been pushed into the circular
// buffer, not the allocated buffer size.
size_t nr_elements_in_buffer_ = 0;
};
} // namespace webrtc
#endif // MODULES_AUDIO_PROCESSING_ECHO_DETECTOR_CIRCULAR_BUFFER_H_