1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/*
* 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.
*/
#include "modules/audio_processing/test/echo_canceller_test_tools.h"
#include <algorithm>
#include <cstddef>
#include "api/array_view.h"
#include "rtc_base/checks.h"
#include "rtc_base/random.h"
namespace webrtc {
void RandomizeSampleVector(Random* random_generator, ArrayView<float> v) {
RandomizeSampleVector(random_generator, v,
/*amplitude=*/32767.f);
}
void RandomizeSampleVector(Random* random_generator,
ArrayView<float> v,
float amplitude) {
for (auto& v_k : v) {
v_k = 2 * amplitude * random_generator->Rand<float>() - amplitude;
}
}
template <typename T>
void DelayBuffer<T>::Delay(ArrayView<const T> x, ArrayView<T> x_delayed) {
RTC_DCHECK_EQ(x.size(), x_delayed.size());
if (buffer_.empty()) {
std::copy(x.begin(), x.end(), x_delayed.begin());
} else {
for (size_t k = 0; k < x.size(); ++k) {
x_delayed[k] = buffer_[next_insert_index_];
buffer_[next_insert_index_] = x[k];
next_insert_index_ = (next_insert_index_ + 1) % buffer_.size();
}
}
}
template class DelayBuffer<float>;
template class DelayBuffer<int>;
} // namespace webrtc
|
