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https://github.com/danog/libtgvoip.git
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5caaaafa42
I'm now using the entire audio processing module from WebRTC as opposed to individual DSP algorithms pulled from there before. Seems to work better this way.
93 lines
3.3 KiB
C++
93 lines
3.3 KiB
C++
/*
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* Copyright (c) 2014 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_TYPING_DETECTION_H_
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#define MODULES_AUDIO_PROCESSING_TYPING_DETECTION_H_
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#include "rtc_base/system/rtc_export.h"
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namespace webrtc {
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class RTC_EXPORT TypingDetection {
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public:
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TypingDetection();
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virtual ~TypingDetection();
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// Run the detection algortihm. Shall be called every 10 ms. Returns true if
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// typing is detected, or false if not, based on the update period as set with
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// SetParameters(). See |report_detection_update_period_| description below.
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bool Process(bool key_pressed, bool vad_activity);
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// Gets the time in seconds since the last detection.
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int TimeSinceLastDetectionInSeconds();
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// Sets the algorithm parameters. A parameter value of 0 leaves it unchanged.
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// See the correspondning member variables below for descriptions.
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void SetParameters(int time_window,
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int cost_per_typing,
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int reporting_threshold,
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int penalty_decay,
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int type_event_delay,
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int report_detection_update_period);
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private:
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int time_active_;
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int time_since_last_typing_;
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int penalty_counter_;
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// Counter since last time the detection status reported by Process() was
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// updated. See also |report_detection_update_period_|.
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int counter_since_last_detection_update_;
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// The detection status to report. Updated every
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// |report_detection_update_period_| call to Process().
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bool detection_to_report_;
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// What |detection_to_report_| should be set to next time it is updated.
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bool new_detection_to_report_;
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// Settable threshold values.
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// Number of 10 ms slots accepted to count as a hit.
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int time_window_;
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// Penalty added for a typing + activity coincide.
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int cost_per_typing_;
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// Threshold for |penalty_counter_|.
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int reporting_threshold_;
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// How much we reduce |penalty_counter_| every 10 ms.
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int penalty_decay_;
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// How old typing events we allow.
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int type_event_delay_;
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// Settable update period.
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// Number of 10 ms slots between each update of the detection status returned
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// by Process(). This inertia added to the algorithm is usually desirable and
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// provided so that consumers of the class don't have to implement that
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// themselves if they don't wish.
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// If set to 1, each call to Process() will return the detection status for
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// that 10 ms slot.
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// If set to N (where N > 1), the detection status returned from Process()
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// will remain the same until Process() has been called N times. Then, if none
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// of the last N calls to Process() has detected typing for each respective
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// 10 ms slot, Process() will return false. If at least one of the last N
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// calls has detected typing, Process() will return true. And that returned
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// status will then remain the same until the next N calls have been done.
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int report_detection_update_period_;
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};
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} // namespace webrtc
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#endif // #ifndef MODULES_AUDIO_PROCESSING_TYPING_DETECTION_H_
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