mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-15 14:50:39 +01:00
92ea95e34a
In https://webrtc-review.googlesource.com/c/src/+/1560 we moved WebRTC from src/webrtc to src/ (in order to preserve an healthy git history). This CL takes care of fixing header guards, #include paths, etc... NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iea91618212bee0af16aa3f05071eab8f93706578 Reviewed-on: https://webrtc-review.googlesource.com/1561 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19846}
55 lines
1.8 KiB
C++
55 lines
1.8 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"
|
|
#include "rtc_base/constructormagic.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);
|
|
|
|
virtual ~SinusoidalLinearChirpSource() {}
|
|
|
|
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_;
|
|
|
|
RTC_DISALLOW_COPY_AND_ASSIGN(SinusoidalLinearChirpSource);
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // COMMON_AUDIO_RESAMPLER_SINUSOIDAL_LINEAR_CHIRP_SOURCE_H_
|