c20978e581
NOPRESUBMIT=True # cpplint errors that aren't caused by this CL. NOTRY=True NOTREECHECKS=True TBR=kwiberg@webrtc.org, kjellander@webrtc.org Bug: webrtc:7634 Change-Id: I3cca0fbaa807b563c95979cccd6d1bec32055f36 Reviewed-on: https://chromium-review.googlesource.com/562156 Commit-Queue: Edward Lemur <ehmaldonado@webrtc.org> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#18919}
41 lines
1.2 KiB
C++
41 lines
1.2 KiB
C++
/*
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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 WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_CONTROLLER_DOWN_SAMPLER_H_
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#define WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_CONTROLLER_DOWN_SAMPLER_H_
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#include "webrtc/modules/audio_processing/level_controller/biquad_filter.h"
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#include "webrtc/rtc_base/array_view.h"
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#include "webrtc/rtc_base/constructormagic.h"
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namespace webrtc {
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class ApmDataDumper;
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class DownSampler {
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public:
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explicit DownSampler(ApmDataDumper* data_dumper);
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void Initialize(int sample_rate_hz);
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void DownSample(rtc::ArrayView<const float> in, rtc::ArrayView<float> out);
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private:
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ApmDataDumper* data_dumper_;
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int sample_rate_hz_;
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int down_sampling_factor_;
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BiQuadFilter low_pass_filter_;
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RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(DownSampler);
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_AUDIO_PROCESSING_LEVEL_CONTROLLER_DOWN_SAMPLER_H_
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