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https://github.com/mollyim/webrtc.git
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a81c09d5b6
All dependent modules are hardcoded to do their regular mono processing on the first channel. This _almost_ makes RenderBuffer multi-channel: FftData is still only mono. Bug: webrtc:10913 Change-Id: Id5cc34dbabfe59e1cc72a9675dc7979794e870ed Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/151139 Commit-Queue: Sam Zackrisson <saza@webrtc.org> Reviewed-by: Per Åhgren <peah@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29074}
80 lines
2.9 KiB
C++
80 lines
2.9 KiB
C++
/*
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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(MatrixBuffer* block_buffer,
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VectorBuffer* 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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std::transform(X2->begin(), X2->end(), channel_spectrum.begin(),
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X2->begin(), std::plus<float>());
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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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std::transform(X2_shorter->begin(), X2_shorter->end(),
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channel_spectrum.begin(), X2_shorter->begin(),
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std::plus<float>());
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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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std::transform(X2_longer->begin(), X2_longer->end(),
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channel_spectrum.begin(), X2_longer->begin(),
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std::plus<float>());
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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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