63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
/*
|
|
* Copyright (c) 2017 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_AEC3_BLOCK_BUFFER_H_
|
|
#define MODULES_AUDIO_PROCESSING_AEC3_BLOCK_BUFFER_H_
|
|
|
|
#include <stddef.h>
|
|
|
|
#include <vector>
|
|
|
|
#include "rtc_base/checks.h"
|
|
|
|
namespace webrtc {
|
|
|
|
// Struct for bundling a circular buffer of two dimensional vector objects
|
|
// together with the read and write indices.
|
|
struct BlockBuffer {
|
|
BlockBuffer(size_t size,
|
|
size_t num_bands,
|
|
size_t num_channels,
|
|
size_t frame_length);
|
|
~BlockBuffer();
|
|
|
|
int IncIndex(int index) const {
|
|
RTC_DCHECK_EQ(buffer.size(), static_cast<size_t>(size));
|
|
return index < size - 1 ? index + 1 : 0;
|
|
}
|
|
|
|
int DecIndex(int index) const {
|
|
RTC_DCHECK_EQ(buffer.size(), static_cast<size_t>(size));
|
|
return index > 0 ? index - 1 : size - 1;
|
|
}
|
|
|
|
int OffsetIndex(int index, int offset) const {
|
|
RTC_DCHECK_EQ(buffer.size(), static_cast<size_t>(size));
|
|
RTC_DCHECK_GE(size, offset);
|
|
return (size + index + offset) % size;
|
|
}
|
|
|
|
void UpdateWriteIndex(int offset) { write = OffsetIndex(write, offset); }
|
|
void IncWriteIndex() { write = IncIndex(write); }
|
|
void DecWriteIndex() { write = DecIndex(write); }
|
|
void UpdateReadIndex(int offset) { read = OffsetIndex(read, offset); }
|
|
void IncReadIndex() { read = IncIndex(read); }
|
|
void DecReadIndex() { read = DecIndex(read); }
|
|
|
|
const int size;
|
|
std::vector<std::vector<std::vector<std::vector<float>>>> buffer;
|
|
int write = 0;
|
|
int read = 0;
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // MODULES_AUDIO_PROCESSING_AEC3_BLOCK_BUFFER_H_
|