diff base/AudioRecordTarget.h @ 1527:710e6250a401 zoom

Merge from default branch

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/base/AudioRecordTarget.h	Mon Sep 17 13:51:14 2018 +0100
@@ -0,0 +1,50 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#ifndef SV_AUDIO_RECORD_TARGET_H
+#define SV_AUDIO_RECORD_TARGET_H
+
+#include "BaseTypes.h"
+
+/**
+ * The record target API used by the view manager. See also AudioPlaySource.
+ */
+class AudioRecordTarget
+{
+public:
+    virtual ~AudioRecordTarget() { }
+
+    /**
+     * Return whether recording is currently happening.
+     */
+    virtual bool isRecording() const = 0;
+
+    /**
+     * Return the approximate duration of the audio recording so far.
+     */
+    virtual sv_frame_t getRecordDuration() const = 0;
+
+    /**
+     * Return the current (or thereabouts) input levels in the range
+     * 0.0 -> 1.0, for metering purposes. Only valid while recording.
+     * The values returned are peak values since the last call to this
+     * function was made (i.e. calling this function also resets them).
+     */
+    virtual bool getInputLevels(float &left, float &right) = 0;
+};
+
+#endif
+
+
+