541280a8ca
This is a follow-up to https://codereview.webrtc.org/2984473002/. BUG=none TBR=henrika@webrtc.org Review-Url: https://codereview.webrtc.org/2998763002 Cr-Commit-Position: refs/heads/master@{#19306}
61 lines
1.9 KiB
C++
61 lines
1.9 KiB
C++
/*
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* Copyright (c) 2011 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_VOICE_ENGINE_AUDIO_LEVEL_H_
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#define WEBRTC_VOICE_ENGINE_AUDIO_LEVEL_H_
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#include "webrtc/rtc_base/criticalsection.h"
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#include "webrtc/rtc_base/thread_annotations.h"
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#include "webrtc/typedefs.h"
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namespace webrtc {
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class AudioFrame;
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namespace voe {
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class AudioLevel {
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public:
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AudioLevel();
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~AudioLevel();
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// Called on "API thread(s)" from APIs like VoEBase::CreateChannel(),
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// VoEBase::StopSend(), VoEVolumeControl::GetSpeechOutputLevel().
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int8_t Level() const;
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int16_t LevelFullRange() const;
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void Clear();
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// See the description for "totalAudioEnergy" in the WebRTC stats spec
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// (https://w3c.github.io/webrtc-stats/#dom-rtcmediastreamtrackstats-totalaudioenergy)
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double TotalEnergy() const;
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double TotalDuration() const;
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// Called on a native capture audio thread (platform dependent) from the
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// AudioTransport::RecordedDataIsAvailable() callback.
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// In Chrome, this method is called on the AudioInputDevice thread.
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void ComputeLevel(const AudioFrame& audioFrame, double duration);
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private:
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enum { kUpdateFrequency = 10 };
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rtc::CriticalSection crit_sect_;
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int16_t abs_max_ GUARDED_BY(crit_sect_);
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int16_t count_ GUARDED_BY(crit_sect_);
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int8_t current_level_ GUARDED_BY(crit_sect_);
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int16_t current_level_full_range_ GUARDED_BY(crit_sect_);
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double total_energy_ GUARDED_BY(crit_sect_) = 0.0;
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double total_duration_ GUARDED_BY(crit_sect_) = 0.0;
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};
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} // namespace voe
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} // namespace webrtc
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#endif // WEBRTC_VOICE_ENGINE_AUDIO_LEVEL_H_
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