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49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
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/*
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* Copyright (c) 2016 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 MODULES_AUDIO_PROCESSING_AEC3_FRAME_BLOCKER_H_
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#define MODULES_AUDIO_PROCESSING_AEC3_FRAME_BLOCKER_H_
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#include <stddef.h>
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#include <vector>
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#include "api/array_view.h"
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#include "modules/audio_processing/aec3/aec3_common.h"
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#include "rtc_base/constructormagic.h"
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namespace webrtc {
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// Class for producing 64 sample multiband blocks from frames consisting of 1 or
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// 2 subframes of 80 samples.
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class FrameBlocker {
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public:
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explicit FrameBlocker(size_t num_bands);
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~FrameBlocker();
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// Inserts one 80 sample multiband subframe from the multiband frame and
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// extracts one 64 sample multiband block.
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void InsertSubFrameAndExtractBlock(
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const std::vector<rtc::ArrayView<float>>& sub_frame,
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std::vector<std::vector<float>>* block);
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// Reports whether a multiband block of 64 samples is available for
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// extraction.
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bool IsBlockAvailable() const;
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// Extracts a multiband block of 64 samples.
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void ExtractBlock(std::vector<std::vector<float>>* block);
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private:
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const size_t num_bands_;
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std::vector<std::vector<float>> buffer_;
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RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(FrameBlocker);
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};
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} // namespace webrtc
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#endif // MODULES_AUDIO_PROCESSING_AEC3_FRAME_BLOCKER_H_
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