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#include <gtest/gtest.h>
#include <QTestEventList>
#include <QScopedPointer>
#include "mixxxtest.h"
#include "control/controlobject.h"
#include "util/math.h"
class AudioTaperPotTest : public MixxxTest {};
TEST_F(AudioTaperPotTest, ScaleTest) {
{
const double minDB = -6;
const double maxDB = 6;
const double neutralParameter = 0.5;
ControlAudioTaperPotBehavior catpb(minDB, maxDB, neutralParameter);
// Parameter 0 is always 0 (-Infinity)
ASSERT_EQ(0.0, catpb.parameterToValue(0));
// Parameter 0 is always 0 (-Infinity)
ASSERT_EQ(1.0, catpb.parameterToValue(neutralParameter));
// Parameter 1 is always maxDB
ASSERT_EQ(db2ratio(maxDB), catpb.parameterToValue(1));
// value 1 is always on a Integer midi value
double neutralMidi = catpb.valueToMidiParameter(1);
ASSERT_EQ(0.0, fmod(neutralMidi, 1));
// Midi value 64 should result in 0,5
ASSERT_EQ(neutralParameter, catpb.midiValueToParameter(neutralMidi));
// roundtrip check
ASSERT_DOUBLE_EQ(0.25, catpb.parameterToValue(catpb.midiValueToParameter(catpb.valueToMidiParameter(0.25))));
ASSERT_DOUBLE_EQ(0.75, catpb.parameterToValue(catpb.midiValueToParameter(catpb.valueToMidiParameter(0.75))));
}
{
const double minDB = 0;
const double maxDB = 6;
const double neutralParameter = 0.5;
ControlAudioTaperPotBehavior catpb(minDB, maxDB, neutralParameter);
// Parameter 0 is always 0 (-Infinity)
ASSERT_EQ(0.0, catpb.parameterToValue(0));
// Parameter 0 is always 0 (-Infinity)
ASSERT_EQ(1.0, catpb.parameterToValue(neutralParameter));
// Parameter 1 is always maxDB
ASSERT_EQ(db2ratio(maxDB), catpb.parameterToValue(1));
// value 1 is always on a Integer midi value
double neutralMidi = catpb.valueToMidiParameter(1);
ASSERT_EQ(0.0, fmod(neutralMidi, 1));
// Midi value 64 should result in 0,5
ASSERT_EQ(neutralParameter, catpb.midiValueToParameter(neutralMidi));
// roundtrip check
ASSERT_DOUBLE_EQ(0.25, catpb.parameterToValue(catpb.midiValueToParameter(catpb.valueToMidiParameter(0.25))));
ASSERT_DOUBLE_EQ(0.75, catpb.parameterToValue(catpb.midiValueToParameter(catpb.valueToMidiParameter(0.75))));
}
{
const double minDB = -6;
const double maxDB = 0;
const double neutralParameter = 1;
ControlAudioTaperPotBehavior catpb(minDB, maxDB, neutralParameter);
// Parameter 0 is always 0 (-Infinity)
ASSERT_EQ(0.0, catpb.parameterToValue(0));
// Parameter 0 is always 0 (-Infinity)
ASSERT_EQ(1.0, catpb.parameterToValue(neutralParameter));
// Parameter 1 is always maxDB
ASSERT_EQ(db2ratio(maxDB), catpb.parameterToValue(1));
// value 1 is always on a Integer midi value
double neutralMidi = catpb.valueToMidiParameter(1);
ASSERT_EQ(0.0, fmod(neutralMidi, 1));
// Midi value 64 should result in 0,5
ASSERT_EQ(neutralParameter, catpb.midiValueToParameter(neutralMidi));
// roundtrip checkx
ASSERT_DOUBLE_EQ(0.25, catpb.parameterToValue(catpb.midiValueToParameter(catpb.valueToMidiParameter(0.25))));
ASSERT_DOUBLE_EQ(0.75, catpb.parameterToValue(catpb.midiValueToParameter(catpb.valueToMidiParameter(0.75))));
}
}
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