Implement demo app

src/main.cpp

@@ -0,0 +1,46 @@
+#include "midiPlayer.h"
+
+#include <iostream>
+#include <pitches/all.h>
+#include <span>
+#include <unordered_map>
+
+using namespace std;
+//--------------------------------------------------------------
+int main(int argc, char *argv[])
+{
+  cout << "Playing melodies..." << endl;
+
+  // Prepare melodies look-up table
+  unordered_map<string, std::span<const pitches::Note>> melodies = {
+    { "Amazing Grace", pitches::amazing_grace },
+    { "An die Freude (Ode a la joie)", pitches::an_die_freude },
+    { "Auld Lang Syne", pitches::auld_lang_syne },
+    { "Canon de Pachelbel", pitches::canon_pachelbel },
+    { "Au clair de la Lune", pitches::au_clair_lune },
+    { "Douce Nuit", pitches::douce_nuit },
+    { "Frere Jacques", pitches::frere_jacques },
+    { "Fur Elise", pitches::fur_elise },
+    { "God Save the Queen", pitches::god_save_the_queen },
+    { "Greensleeves", pitches::greensleeves },
+    { "Happy Birthday", pitches::happy_birthday },
+    { "Indiana Jones", pitches::indiana_jones },
+    { "Jingle Bells", pitches::jingle_bells },
+    { "Super Mario Theme", pitches::mario },
+    { "La Marseillaise", pitches::marseillaise },
+    { "Tetris", pitches::tetris },
+    { "Twinkle Twinkle", pitches::twinkle_twinkle },
+    { "Vive le Vent", pitches::vive_le_vent }
+  };
+
+  // Play melodies
+  const MidiPlayer player;
+  for (const auto &[title, melody] : melodies)
+  {
+    cout << "  Playing: " << title << endl;
+    player.playBuffer(melody);
+  }
+
+  return 0;
+}
+//--------------------------------------------------------------