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In order to eliminate the WebRTC Subtree mirror in Chromium, WebRTC is moving the content of the src/webrtc directory up to the src/ directory. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38 Reviewed-on: https://webrtc-review.googlesource.com/1560 Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19845}
81 lines
2.7 KiB
C++
81 lines
2.7 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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#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_RENDER_BUFFER_H_
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#define WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_RENDER_BUFFER_H_
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#include <memory>
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#include <vector>
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#include "webrtc/api/array_view.h"
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#include "webrtc/modules/audio_processing/aec3/aec3_fft.h"
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#include "webrtc/modules/audio_processing/aec3/fft_data.h"
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#include "webrtc/rtc_base/constructormagic.h"
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namespace webrtc {
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// Provides a buffer of the render data for the echo remover.
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class RenderBuffer {
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public:
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// The constructor takes, besides from the other parameters, a vector
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// containing the number of FFTs that will be included in the spectral sums in
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// the call to SpectralSum.
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RenderBuffer(Aec3Optimization optimization,
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size_t num_bands,
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size_t size,
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const std::vector<size_t> num_ffts_for_spectral_sums);
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~RenderBuffer();
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// Clears the buffer.
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void Clear();
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// Insert a block into the buffer.
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void Insert(const std::vector<std::vector<float>>& block);
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// Gets the last inserted block.
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const std::vector<std::vector<float>>& MostRecentBlock() const {
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return last_block_;
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}
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// Get the spectrum from one of the FFTs in the buffer
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const std::array<float, kFftLengthBy2Plus1>& Spectrum(
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size_t buffer_offset_ffts) const {
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return spectrum_buffer_[(position_ + buffer_offset_ffts) %
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fft_buffer_.size()];
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}
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// Returns the sum of the spectrums for a certain number of FFTs.
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const std::array<float, kFftLengthBy2Plus1>& SpectralSum(
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size_t num_ffts) const {
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RTC_DCHECK_EQ(spectral_sums_length_, num_ffts);
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return spectral_sums_[0];
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}
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// Returns the circular buffer.
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rtc::ArrayView<const FftData> Buffer() const { return fft_buffer_; }
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// Returns the current position in the circular buffer
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size_t Position() const { return position_; }
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private:
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const Aec3Optimization optimization_;
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std::vector<FftData> fft_buffer_;
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std::vector<std::array<float, kFftLengthBy2Plus1>> spectrum_buffer_;
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size_t spectral_sums_length_;
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std::vector<std::array<float, kFftLengthBy2Plus1>> spectral_sums_;
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size_t position_ = 0;
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std::vector<std::vector<float>> last_block_;
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const Aec3Fft fft_;
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RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(RenderBuffer);
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_AUDIO_PROCESSING_AEC3_RENDER_BUFFER_H_
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