82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
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/*
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* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "modules/audio_processing/aec3/render_buffer.h"
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#include <algorithm>
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#include <functional>
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#include "modules/audio_processing/aec3/aec3_common.h"
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#include "rtc_base/checks.h"
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namespace webrtc {
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RenderBuffer::RenderBuffer(BlockBuffer* block_buffer,
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SpectrumBuffer* spectrum_buffer,
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FftBuffer* fft_buffer)
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: block_buffer_(block_buffer),
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spectrum_buffer_(spectrum_buffer),
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fft_buffer_(fft_buffer) {
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RTC_DCHECK(block_buffer_);
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RTC_DCHECK(spectrum_buffer_);
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RTC_DCHECK(fft_buffer_);
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RTC_DCHECK_EQ(block_buffer_->buffer.size(), fft_buffer_->buffer.size());
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RTC_DCHECK_EQ(spectrum_buffer_->buffer.size(), fft_buffer_->buffer.size());
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RTC_DCHECK_EQ(spectrum_buffer_->read, fft_buffer_->read);
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RTC_DCHECK_EQ(spectrum_buffer_->write, fft_buffer_->write);
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}
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RenderBuffer::~RenderBuffer() = default;
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void RenderBuffer::SpectralSum(
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size_t num_spectra,
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std::array<float, kFftLengthBy2Plus1>* X2) const {
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X2->fill(0.f);
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int position = spectrum_buffer_->read;
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for (size_t j = 0; j < num_spectra; ++j) {
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for (const auto& channel_spectrum : spectrum_buffer_->buffer[position]) {
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for (size_t k = 0; k < X2->size(); ++k) {
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(*X2)[k] += channel_spectrum[k];
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}
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}
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position = spectrum_buffer_->IncIndex(position);
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}
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}
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void RenderBuffer::SpectralSums(
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size_t num_spectra_shorter,
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size_t num_spectra_longer,
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std::array<float, kFftLengthBy2Plus1>* X2_shorter,
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std::array<float, kFftLengthBy2Plus1>* X2_longer) const {
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RTC_DCHECK_LE(num_spectra_shorter, num_spectra_longer);
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X2_shorter->fill(0.f);
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int position = spectrum_buffer_->read;
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size_t j = 0;
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for (; j < num_spectra_shorter; ++j) {
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for (const auto& channel_spectrum : spectrum_buffer_->buffer[position]) {
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for (size_t k = 0; k < X2_shorter->size(); ++k) {
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(*X2_shorter)[k] += channel_spectrum[k];
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}
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}
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position = spectrum_buffer_->IncIndex(position);
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}
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std::copy(X2_shorter->begin(), X2_shorter->end(), X2_longer->begin());
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for (; j < num_spectra_longer; ++j) {
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for (const auto& channel_spectrum : spectrum_buffer_->buffer[position]) {
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for (size_t k = 0; k < X2_longer->size(); ++k) {
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(*X2_longer)[k] += channel_spectrum[k];
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}
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}
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position = spectrum_buffer_->IncIndex(position);
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}
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}
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} // namespace webrtc
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