chromium/third_party/webrtc/common_audio/resampler/push_resampler.cc

/*
 *  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.
 */

#include "common_audio/resampler/include/push_resampler.h"

#include <stdint.h>
#include <string.h>

#include <memory>

#include "api/audio/audio_frame.h"
#include "common_audio/include/audio_util.h"
#include "common_audio/resampler/push_sinc_resampler.h"
#include "rtc_base/checks.h"

namespace webrtc {

namespace {
// Maximum concurrent number of channels for `PushResampler<>`.
// Note that this may be different from what the maximum is for audio codecs.
constexpr int kMaxNumberOfChannels = …;
}  // namespace

template <typename T>
PushResampler<T>::PushResampler() = default;

template <typename T>
PushResampler<T>::PushResampler(size_t src_samples_per_channel,
                                size_t dst_samples_per_channel,
                                size_t num_channels) { … }

template <typename T>
PushResampler<T>::~PushResampler() = default;

template <typename T>
void PushResampler<T>::EnsureInitialized(size_t src_samples_per_channel,
                                         size_t dst_samples_per_channel,
                                         size_t num_channels) { … }

template <typename T>
int PushResampler<T>::Resample(InterleavedView<const T> src,
                               InterleavedView<T> dst) { … }

template <typename T>
int PushResampler<T>::Resample(MonoView<const T> src, MonoView<T> dst) { … }

// Explictly generate required instantiations.
template class PushResampler<int16_t>;
template class PushResampler<float>;

}  // namespace webrtc