diff base/test/TestPitch.h @ 892:451f7f3ab6e7

Make octave numbering configurable, and change default to C4 = middle C

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/base/test/TestPitch.h	Thu Mar 27 13:32:56 2014 +0000
@@ -0,0 +1,97 @@
+/* -*- 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 TEST_PITCH_H
+#define TEST_PITCH_H
+
+#include "../Pitch.h"
+#include "../Preferences.h"
+
+#include <QObject>
+#include <QtTest>
+#include <QDir>
+
+#include <iostream>
+
+using namespace std;
+
+class TestPitch : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void init() {
+	Preferences::getInstance()->setOctaveOfMiddleC(4);
+	Preferences::getInstance()->setTuningFrequency(440);
+    }
+
+    void pitchLabel()
+    {
+	QCOMPARE(Pitch::getPitchLabel(60, 0, false), QString("C4"));
+	QCOMPARE(Pitch::getPitchLabel(69, 0, false), QString("A4"));
+	QCOMPARE(Pitch::getPitchLabel(61, 0, false), QString("C#4"));
+	QCOMPARE(Pitch::getPitchLabel(61, 0, true), QString("Db4"));
+	QCOMPARE(Pitch::getPitchLabel(59, 0, false), QString("B3"));
+	QCOMPARE(Pitch::getPitchLabel(59, 0, true), QString("B3"));
+	QCOMPARE(Pitch::getPitchLabel(0, 0, false), QString("C-1"));
+
+	QCOMPARE(Pitch::getPitchLabel(60, -40, false), QString("C4-40c"));
+	QCOMPARE(Pitch::getPitchLabel(60, 40, false), QString("C4+40c"));
+	QCOMPARE(Pitch::getPitchLabel(58, 4, false), QString("A#3+4c"));
+
+	Preferences::getInstance()->setOctaveOfMiddleC(3);
+
+	QCOMPARE(Pitch::getPitchLabel(60, 0, false), QString("C3"));
+	QCOMPARE(Pitch::getPitchLabel(69, 0, false), QString("A3"));
+	QCOMPARE(Pitch::getPitchLabel(61, 0, false), QString("C#3"));
+	QCOMPARE(Pitch::getPitchLabel(61, 0, true), QString("Db3"));
+	QCOMPARE(Pitch::getPitchLabel(59, 0, false), QString("B2"));
+	QCOMPARE(Pitch::getPitchLabel(59, 0, true), QString("B2"));
+	QCOMPARE(Pitch::getPitchLabel(0, 0, false), QString("C-2"));
+
+	QCOMPARE(Pitch::getPitchLabel(60, -40, false), QString("C3-40c"));
+	QCOMPARE(Pitch::getPitchLabel(60, 40, false), QString("C3+40c"));
+	QCOMPARE(Pitch::getPitchLabel(58, 4, false), QString("A#2+4c"));
+    }
+
+    void pitchLabelForFrequency()
+    {
+	QCOMPARE(Pitch::getPitchLabelForFrequency(440, 440, false), QString("A4"));
+	QCOMPARE(Pitch::getPitchLabelForFrequency(440, 220, false), QString("A5"));
+	QCOMPARE(Pitch::getPitchLabelForFrequency(261.63, 440, false), QString("C4"));
+    }
+
+#define MIDDLE_C 261.6255653f
+
+    void frequencyForPitch()
+    {
+	QCOMPARE(Pitch::getFrequencyForPitch(60, 0), MIDDLE_C);
+	QCOMPARE(Pitch::getFrequencyForPitch(69, 0), 440.f);
+	QCOMPARE(Pitch::getFrequencyForPitch(60, 0, 220), MIDDLE_C / 2.f);
+	QCOMPARE(Pitch::getFrequencyForPitch(69, 0, 220), 220.f);
+    }
+
+    void pitchForFrequency()
+    {
+	float centsOffset = 0.f;
+	QCOMPARE(Pitch::getPitchForFrequency(MIDDLE_C, &centsOffset), 60);
+	QCOMPARE(centsOffset, 0.f);
+	QCOMPARE(Pitch::getPitchForFrequency(261.0, &centsOffset), 60);
+	QCOMPARE(int(centsOffset), -4);
+	QCOMPARE(Pitch::getPitchForFrequency(440.0, &centsOffset), 69);
+	QCOMPARE(centsOffset, 0.f);
+    }
+};
+
+#endif