Chris@1338: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@1338: 
Chris@1338: /*
Chris@1338:     Sonic Visualiser
Chris@1338:     An audio file viewer and annotation editor.
Chris@1338:     Centre for Digital Music, Queen Mary, University of London.
Chris@1338:     
Chris@1338:     This program is free software; you can redistribute it and/or
Chris@1338:     modify it under the terms of the GNU General Public License as
Chris@1338:     published by the Free Software Foundation; either version 2 of the
Chris@1338:     License, or (at your option) any later version.  See the file
Chris@1338:     COPYING included with this distribution for more information.
Chris@1338: */
Chris@1338: 
Chris@1338: #ifndef SV_AUDIO_RECORD_TARGET_H
Chris@1338: #define SV_AUDIO_RECORD_TARGET_H
Chris@1338: 
Chris@1338: #include "BaseTypes.h"
Chris@1338: 
Chris@1338: /**
Chris@1338:  * The record target API used by the view manager. See also AudioPlaySource.
Chris@1338:  */
Chris@1338: class AudioRecordTarget
Chris@1338: {
Chris@1338: public:
Chris@1338:     virtual ~AudioRecordTarget() { }
Chris@1338: 
Chris@1338:     /**
Chris@1338:      * Return whether recording is currently happening.
Chris@1338:      */
Chris@1338:     virtual bool isRecording() const = 0;
Chris@1338: 
Chris@1338:     /**
Chris@1338:      * Return the approximate duration of the audio recording so far.
Chris@1338:      */
Chris@1338:     virtual sv_frame_t getRecordDuration() const = 0;
Chris@1338: 
Chris@1338:     /**
Chris@1338:      * Return the current (or thereabouts) input levels in the range
Chris@1338:      * 0.0 -> 1.0, for metering purposes. Only valid while recording.
Chris@1338:      * The values returned are peak values since the last call to this
Chris@1338:      * function was made (i.e. calling this function also resets them).
Chris@1338:      */
Chris@1338:     virtual bool getInputLevels(float &left, float &right) = 0;
Chris@1338: };
Chris@1338: 
Chris@1338: #endif
Chris@1338: 
Chris@1338: 
Chris@1338: