Chris@222: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@222: 
Chris@222: #include "dsp/keydetection/GetKeyMode.h"
Chris@222: 
Chris@222: #include <iostream>
Chris@222: 
Chris@222: #include <cmath>
Chris@222: 
Chris@222: #define BOOST_TEST_DYN_LINK
Chris@222: #define BOOST_TEST_MAIN
Chris@222: 
Chris@222: #include <boost/test/unit_test.hpp>
Chris@222: 
Chris@222: BOOST_AUTO_TEST_SUITE(TestGetKeyMode)
Chris@222: 
Chris@222: using std::cout;
Chris@222: using std::endl;
Chris@222: using std::string;
Chris@222: using std::vector;
Chris@222: 
Chris@222: string keyName(int index, bool minor)
Chris@222: {
Chris@222:     static string namesMajor[] = {
Chris@222:         "C", "Db", "D", "Eb",
Chris@222:         "E", "F", "F# / Gb", "G",
Chris@222:         "Ab", "A", "Bb", "B"
Chris@222:     };
Chris@222: 
Chris@222:     static string namesMinor[] = {
Chris@222:         "C", "C#", "D", "Eb / D#",
Chris@222:         "E", "F", "F#", "G",
Chris@222:         "G#", "A", "Bb", "B"
Chris@222:     };
Chris@222: 
Chris@222:     if (index < 1 || index > 12) return "";
Chris@222: 
Chris@222:     std::string name;
Chris@222:     if (minor) name = namesMinor[index - 1] + " minor";
Chris@222:     else name = namesMajor[index - 1] + " major";
Chris@222:     return name;
Chris@222: }
Chris@222: 
Chris@222: string midiPitchName(int midiPitch)
Chris@222: {
Chris@222:     static string names[] = {
Chris@222:         "C",  "C#", "D",  "D#",
Chris@222:         "E",  "F",  "F#", "G",
Chris@222:         "G#", "A",  "A#", "B"
Chris@222:     };
Chris@222: 
Chris@222:     return names[midiPitch % 12];
Chris@222: }
Chris@222: 
Chris@222: vector<double> generateSinusoid(double frequency,
Chris@222:                                 int sampleRate,
Chris@222:                                 int length)
Chris@222: {
Chris@222:     vector<double> buffer;
Chris@222:     buffer.reserve(length);
Chris@222:     for (int i = 0; i < length; ++i) {
Chris@222:         buffer.push_back(sin(i * M_PI * 2.0 * frequency / sampleRate));
Chris@222:     }
Chris@222:     return buffer;
Chris@222: }
Chris@222:     
Chris@222: BOOST_AUTO_TEST_CASE(sinusoid_12tET)
Chris@222: {
Chris@222:     double concertA = 440.0;
Chris@222:     int sampleRate = 44100;
Chris@222:     
Chris@222:     for (int midiPitch = 48; midiPitch < 96; ++midiPitch) {
Chris@222: 
Chris@222:         cout << endl;
Chris@222: 
Chris@222:         GetKeyMode gkm(sampleRate, concertA, 10, 10);
Chris@222:         int blockSize = gkm.getBlockSize();
Chris@222:         int hopSize = gkm.getHopSize();
Chris@222:         cerr << "blockSize = " << blockSize
Chris@222:              << ", hopSize = " << hopSize << endl;
Chris@222: 
Chris@222:         double frequency = concertA * pow(2.0, (midiPitch - 69.0) / 12.0);
Chris@222:         cout << "midiPitch = " << midiPitch
Chris@222:              << ", name = " << midiPitchName(midiPitch)
Chris@222:              << ", frequency = " << frequency << endl;
Chris@222: 
Chris@222:         int blocks = 4;
Chris@222:         int totalLength = blockSize * blocks;
Chris@222:         vector<double> signal = generateSinusoid(frequency, sampleRate,
Chris@222:                                                  totalLength);
Chris@222: 
Chris@222:         int key;
Chris@222:         
Chris@222:         for (int offset = 0; offset + blockSize < totalLength;
Chris@222:              offset += hopSize) {
Chris@222:             int k = gkm.process(signal.data() + offset);
Chris@222:             if (offset == 0) {
Chris@222:                 key = k;
Chris@222:             } else {
Chris@222:                 BOOST_CHECK_EQUAL(key, k);
Chris@222:             }
Chris@222:         }
Chris@222: 
Chris@222:         bool minor = (key > 12);
Chris@222: 
Chris@222:         int tonic = key;
Chris@222:         if (minor) tonic -= 12;
Chris@222: 
Chris@222:         string name = keyName(tonic, minor);
Chris@222:         cout << "key value = " << key << ", name = " << name << endl;
Chris@222:     }
Chris@222: }
Chris@222: 
Chris@222: BOOST_AUTO_TEST_SUITE_END()