chromium/third_party/webrtc/modules/audio_processing/agc2/rnn_vad/sequence_buffer.h

/*
 *  Copyright (c) 2018 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_RNN_VAD_SEQUENCE_BUFFER_H_
#define MODULES_AUDIO_PROCESSING_AGC2_RNN_VAD_SEQUENCE_BUFFER_H_

#include <algorithm>
#include <cstring>
#include <type_traits>
#include <vector>

#include "api/array_view.h"
#include "rtc_base/checks.h"

namespace webrtc {
namespace rnn_vad {

// Linear buffer implementation to (i) push fixed size chunks of sequential data
// and (ii) view contiguous parts of the buffer. The buffer and the pushed
// chunks have size S and N respectively. For instance, when S = 2N the first
// half of the sequence buffer is replaced with its second half, and the new N
// values are written at the end of the buffer.
// The class also provides a view on the most recent M values, where 0 < M <= S
// and by default M = N.
template <typename T, int S, int N, int M = N>
class SequenceBuffer { … };

}  // namespace rnn_vad
}  // namespace webrtc

#endif  // MODULES_AUDIO_PROCESSING_AGC2_RNN_VAD_SEQUENCE_BUFFER_H_