webrtc/common_audio/resampler/sinusoidal_linear_chirp_source.h
Artem Titov 6cae2d5513 Reland "Remove RTC_DISALLOW_COPY_AND_ASSIGN usages completely"
This reverts commit 3f87250a4f.

Reason for revert: Downstream is fixed

Original change's description:
> Revert "Remove RTC_DISALLOW_COPY_AND_ASSIGN usages completely"
>
> This reverts commit 5f0eb93d2a.
>
> Reason for revert: Breaks downstream project. I'm going to fix that one and create a reland of this CL after.
>
> Original change's description:
> > Remove RTC_DISALLOW_COPY_AND_ASSIGN usages completely
> >
> > Bug: webrtc:13555, webrtc:13082
> > Change-Id: Iff2cda6f516739419e97e975e03f77a98f74be03
> > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/249260
> > Reviewed-by: Harald Alvestrand <hta@webrtc.org>
> > Reviewed-by: Artem Titov <titovartem@webrtc.org>
> > Commit-Queue: (Daniel.L) Byoungchan Lee <daniel.l@hpcnt.com>
> > Cr-Commit-Position: refs/heads/main@{#35805}
>
> TBR=hta@webrtc.org,titovartem@webrtc.org,daniel.l@hpcnt.com,webrtc-scoped@luci-project-accounts.iam.gserviceaccount.com
>
> Change-Id: I33d497f1132adfe6d151023195a388d9b7d548f9
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: webrtc:13555, webrtc:13082
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/249364
> Reviewed-by: Artem Titov <titovartem@webrtc.org>
> Owners-Override: Artem Titov <titovartem@webrtc.org>
> Reviewed-by: Andrey Logvin <landrey@webrtc.org>
> Reviewed-by: Björn Terelius <terelius@webrtc.org>
> Commit-Queue: Artem Titov <titovartem@webrtc.org>
> Cr-Commit-Position: refs/heads/main@{#35807}

# Not skipping CQ checks because this is a reland.

Bug: webrtc:13555, webrtc:13082
Change-Id: I7ef1ef3b6e3c41b1a96014aa75f003c0fcf33949
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/249365
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35814}
2022-01-27 12:55:44 +00:00

56 lines
1.9 KiB
C++

/*
* Copyright (c) 2013 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.
*/
// Modified from the Chromium original here:
// src/media/base/sinc_resampler_unittest.cc
#ifndef COMMON_AUDIO_RESAMPLER_SINUSOIDAL_LINEAR_CHIRP_SOURCE_H_
#define COMMON_AUDIO_RESAMPLER_SINUSOIDAL_LINEAR_CHIRP_SOURCE_H_
#include "common_audio/resampler/sinc_resampler.h"
namespace webrtc {
// Fake audio source for testing the resampler. Generates a sinusoidal linear
// chirp (http://en.wikipedia.org/wiki/Chirp) which can be tuned to stress the
// resampler for the specific sample rate conversion being used.
class SinusoidalLinearChirpSource : public SincResamplerCallback {
public:
// `delay_samples` can be used to insert a fractional sample delay into the
// source. It will produce zeros until non-negative time is reached.
SinusoidalLinearChirpSource(int sample_rate,
size_t samples,
double max_frequency,
double delay_samples);
~SinusoidalLinearChirpSource() override {}
SinusoidalLinearChirpSource(const SinusoidalLinearChirpSource&) = delete;
SinusoidalLinearChirpSource& operator=(const SinusoidalLinearChirpSource&) =
delete;
void Run(size_t frames, float* destination) override;
double Frequency(size_t position);
private:
enum { kMinFrequency = 5 };
int sample_rate_;
size_t total_samples_;
double max_frequency_;
double k_;
size_t current_index_;
double delay_samples_;
};
} // namespace webrtc
#endif // COMMON_AUDIO_RESAMPLER_SINUSOIDAL_LINEAR_CHIRP_SOURCE_H_