9c55f0f957
Keep the old neteq4/audio_decoder_unittests.isolate while waiting for a hard-coded reference to change. This CL effectively reverts r6257 "Rename neteq4 folder to neteq". BUG=2996 TBR=tina.legrand@webrtc.org Review URL: https://webrtc-codereview.appspot.com/21629004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@6367 4adac7df-926f-26a2-2b94-8c16560cd09d
77 lines
2.4 KiB
C++
77 lines
2.4 KiB
C++
/*
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* Copyright (c) 2012 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_CODING_NETEQ_DELAY_PEAK_DETECTOR_H_
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#define WEBRTC_MODULES_AUDIO_CODING_NETEQ_DELAY_PEAK_DETECTOR_H_
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#include <string.h> // size_t
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#include <list>
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#include "webrtc/base/constructormagic.h"
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namespace webrtc {
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class DelayPeakDetector {
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public:
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DelayPeakDetector();
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virtual ~DelayPeakDetector() {}
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virtual void Reset();
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// Notifies the DelayPeakDetector of how much audio data is carried in each
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// packet.
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virtual void SetPacketAudioLength(int length_ms);
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// Returns true if peak-mode is active. That is, delay peaks were observed
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// recently.
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virtual bool peak_found() { return peak_found_; }
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// Calculates and returns the maximum delay peak height. Returns -1 if no
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// delay peaks have been observed recently. The unit is number of packets.
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virtual int MaxPeakHeight() const;
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// Calculates and returns the maximum delay peak distance in ms.
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// Returns -1 if no delay peaks have been observed recently.
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virtual int MaxPeakPeriod() const;
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// Updates the DelayPeakDetector with a new inter-arrival time (in packets)
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// and the current target buffer level (needed to decide if a peak is observed
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// or not). Returns true if peak-mode is active, false if not.
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virtual bool Update(int inter_arrival_time, int target_level);
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// Increments the |peak_period_counter_ms_| with |inc_ms|. Only increments
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// the counter if it is non-negative. A negative denotes that no peak has
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// been observed.
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virtual void IncrementCounter(int inc_ms);
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private:
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static const size_t kMaxNumPeaks = 8;
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static const size_t kMinPeaksToTrigger = 2;
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static const int kPeakHeightMs = 78;
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static const int kMaxPeakPeriodMs = 10000;
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typedef struct {
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int period_ms;
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int peak_height_packets;
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} Peak;
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bool CheckPeakConditions();
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std::list<Peak> peak_history_;
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bool peak_found_;
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int peak_detection_threshold_;
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int peak_period_counter_ms_;
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DISALLOW_COPY_AND_ASSIGN(DelayPeakDetector);
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};
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} // namespace webrtc
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#endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_DELAY_PEAK_DETECTOR_H_
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