annotate base/AudioRecordTarget.h @ 1541:71207822a7e0 zoom

Provide fromMicroseconds (and test it)
author Chris Cannam
date Thu, 27 Sep 2018 15:53:34 +0100
parents 8541563f1fd3
children
rev   line source
Chris@1338 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@1338 2
Chris@1338 3 /*
Chris@1338 4 Sonic Visualiser
Chris@1338 5 An audio file viewer and annotation editor.
Chris@1338 6 Centre for Digital Music, Queen Mary, University of London.
Chris@1338 7
Chris@1338 8 This program is free software; you can redistribute it and/or
Chris@1338 9 modify it under the terms of the GNU General Public License as
Chris@1338 10 published by the Free Software Foundation; either version 2 of the
Chris@1338 11 License, or (at your option) any later version. See the file
Chris@1338 12 COPYING included with this distribution for more information.
Chris@1338 13 */
Chris@1338 14
Chris@1338 15 #ifndef SV_AUDIO_RECORD_TARGET_H
Chris@1338 16 #define SV_AUDIO_RECORD_TARGET_H
Chris@1338 17
Chris@1338 18 #include "BaseTypes.h"
Chris@1338 19
Chris@1338 20 /**
Chris@1338 21 * The record target API used by the view manager. See also AudioPlaySource.
Chris@1338 22 */
Chris@1338 23 class AudioRecordTarget
Chris@1338 24 {
Chris@1338 25 public:
Chris@1338 26 virtual ~AudioRecordTarget() { }
Chris@1338 27
Chris@1338 28 /**
Chris@1338 29 * Return whether recording is currently happening.
Chris@1338 30 */
Chris@1338 31 virtual bool isRecording() const = 0;
Chris@1338 32
Chris@1338 33 /**
Chris@1338 34 * Return the approximate duration of the audio recording so far.
Chris@1338 35 */
Chris@1338 36 virtual sv_frame_t getRecordDuration() const = 0;
Chris@1338 37
Chris@1338 38 /**
Chris@1338 39 * Return the current (or thereabouts) input levels in the range
Chris@1338 40 * 0.0 -> 1.0, for metering purposes. Only valid while recording.
Chris@1338 41 * The values returned are peak values since the last call to this
Chris@1338 42 * function was made (i.e. calling this function also resets them).
Chris@1338 43 */
Chris@1338 44 virtual bool getInputLevels(float &left, float &right) = 0;
Chris@1338 45 };
Chris@1338 46
Chris@1338 47 #endif
Chris@1338 48
Chris@1338 49
Chris@1338 50