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feat: added music player aplication
1 parent a4cc465 commit 10b6fc6

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‎Src/Music_Player_Application/Makefile‎

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# Makefile for Lecture 18 C++ Music Player System
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CXX = g++
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CXXFLAGS = -std=c++11 -Wall -Wextra
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TARGET = music_player
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SOURCE = main.cpp
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# Default target
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all: $(TARGET)
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# Build the executable
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$(TARGET): $(SOURCE)
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$(CXX) $(CXXFLAGS) -I. -o $(TARGET) $(SOURCE)
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# Run the application
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run: $(TARGET)
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./$(TARGET)
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# Clean up compiled files
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clean:
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rm -f $(TARGET) $(TARGET).exe
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# Help target
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help:
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@echo "Available targets:"
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@echo " all - Build the application (default)"
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@echo " run - Build and run the application"
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@echo " clean - Remove compiled files"
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@echo " help - Show this help message"
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.PHONY: all run clean help

‎Src/Music_Player_Application/MusicPlayerApplication.hpp‎

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#pragma once
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#include "managers/PlaylistManager.hpp"
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#include "MusicPlayerFacade.hpp"
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using namespace std;
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class MusicPlayerApplication {
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private:
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static MusicPlayerApplication* instance;
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vector<Song*> songLibrary;
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MusicPlayerApplication() {}
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public:
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static MusicPlayerApplication* getInstance() {
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if (!instance) {
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instance = new MusicPlayerApplication();
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}
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return instance;
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}
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void createSongInLibrary(const string& title, const string& artist,
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const string& path) {
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Song* newSong = new Song(title, artist, path);
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songLibrary.push_back(newSong);
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}
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Song* findSongByTitle(const string& title) {
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for (Song* s : songLibrary) {
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if (s->getTitle() == title) {
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return s;
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}
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}
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return nullptr;
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}
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void createPlaylist(const string& playlistName) {
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PlaylistManager::getInstance()->createPlaylist(playlistName);
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}
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void addSongToPlaylist(const string& playlistName,
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const string& songTitle) {
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Song* song = findSongByTitle(songTitle);
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if (!song) {
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throw runtime_error("Song \"" + songTitle + "\" not found in library.");
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}
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PlaylistManager::getInstance()
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->addSongToPlaylist(playlistName, song);
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}
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void connectAudioDevice(DeviceType deviceType) {
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MusicPlayerFacade::getInstance()->connectDevice(deviceType);
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}
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void selectPlayStrategy(PlayStrategyType strategyType) {
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MusicPlayerFacade::getInstance()->setPlayStrategy(strategyType);
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}
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void loadPlaylist(const string& playlistName) {
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MusicPlayerFacade::getInstance()->loadPlaylist(playlistName);
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}
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void playSingleSong(const string& songTitle) {
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Song* song = findSongByTitle(songTitle);
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if (!song) {
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throw runtime_error("Song \"" + songTitle + "\" not found.");
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}
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MusicPlayerFacade::getInstance()->playSong(song);
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}
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void pauseCurrentSong(const string& songTitle) {
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Song* song = findSongByTitle(songTitle);
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if (!song) {
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throw runtime_error("Song \"" + songTitle + "\" not found.");
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}
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MusicPlayerFacade::getInstance()->pauseSong(song);
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}
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void playAllTracksInPlaylist() {
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MusicPlayerFacade::getInstance()->playAllTracks();
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}
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void playPreviousTrackInPlaylist() {
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MusicPlayerFacade::getInstance()->playPreviousTrack();
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}
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void queueSongNext(const string& songTitle) {
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Song* song = findSongByTitle(songTitle);
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if (!song) {
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throw runtime_error("Song \"" + songTitle + "\" not found.");
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}
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MusicPlayerFacade::getInstance()->enqueueNext(song);
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}
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};
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MusicPlayerApplication* MusicPlayerApplication::instance = nullptr;

‎Src/Music_Player_Application/MusicPlayerFacade.hpp‎

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#pragma once
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#include "core/AudioEngine.hpp"
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#include "models/Playlist.hpp"
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#include "models/Song.hpp"
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#include "strategies/PlayStrategy.hpp"
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#include "enums/DeviceType.hpp"
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#include "enums/PlayStrategyType.hpp"
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#include "managers/DeviceManager.hpp"
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#include "managers/PlaylistManager.hpp"
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#include "managers/StrategyManager.hpp"
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using namespace std;
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class MusicPlayerFacade {
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private:
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static MusicPlayerFacade* instance;
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AudioEngine* audioEngine;
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Playlist* loadedPlaylist;
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PlayStrategy* playStrategy;
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MusicPlayerFacade() {
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loadedPlaylist = nullptr;
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playStrategy = nullptr;
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audioEngine = new AudioEngine();
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}
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public:
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static MusicPlayerFacade* getInstance() {
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if (!instance) {
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instance = new MusicPlayerFacade();
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}
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return instance;
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}
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void connectDevice(DeviceType deviceType) {
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DeviceManager::getInstance()->connect(deviceType);
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}
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void setPlayStrategy(PlayStrategyType strategyType) {
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playStrategy = StrategyManager::getInstance()->getStrategy(strategyType);
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}
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void loadPlaylist(const string& name) {
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loadedPlaylist = PlaylistManager::getInstance()->getPlaylist(name);
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if (!playStrategy) {
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throw runtime_error("Play strategy not set before loading.");
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}
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playStrategy->setPlaylist(loadedPlaylist);
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}
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void playSong(Song* song) {
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if (!DeviceManager::getInstance()->hasOutputDevice()) {
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throw runtime_error("No audio device connected.");
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}
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IAudioOutputDevice* device = DeviceManager::getInstance()->getOutputDevice();
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audioEngine->play(device, song);
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}
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void pauseSong(Song* song) {
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if (audioEngine->getCurrentSongTitle() != song->getTitle()) {
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throw runtime_error("Cannot pause \"" + song->getTitle() + "\"; not currently playing.");
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}
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audioEngine->pause();
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}
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void playAllTracks() {
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if (!loadedPlaylist) {
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throw runtime_error("No playlist loaded.");
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}
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while (playStrategy->hasNext()) {
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Song* nextSong = playStrategy->next();
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IAudioOutputDevice* device = DeviceManager::getInstance()->getOutputDevice();
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audioEngine->play(device, nextSong);
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}
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cout << "Completed playlist: " << loadedPlaylist->getPlaylistName() << "\n";
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}
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void playNextTrack() {
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if (!loadedPlaylist) {
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throw runtime_error("No playlist loaded.");
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}
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if(playStrategy->hasNext()) {
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Song* nextSong = playStrategy->next();
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IAudioOutputDevice* device = DeviceManager::getInstance()->getOutputDevice();
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audioEngine->play(device, nextSong);
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}
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else {
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cout << "Completed playlist: " << loadedPlaylist->getPlaylistName() << "\n";
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}
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}
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void playPreviousTrack() {
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if (!loadedPlaylist) {
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throw runtime_error("No playlist loaded.");
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}
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if(playStrategy->hasPrevious()) {
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Song* prevSong = playStrategy->previous();
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IAudioOutputDevice* device = DeviceManager::getInstance()->getOutputDevice();
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audioEngine->play(device, prevSong);
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}
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else {
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cout << "Completed playlist: " << loadedPlaylist->getPlaylistName() << "\n";
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}
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}
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void enqueueNext(Song* song) {
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playStrategy->addToNext(song);
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}
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};
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MusicPlayerFacade* MusicPlayerFacade::instance = nullptr;
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‎Src/Music_Player_Application/compile.bat‎

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@echo off
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echo Compiling C++ Music Player System...
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REM Compile the main program
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g++ -std=c++11 -I. -o music_player main.cpp
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if %errorlevel% equ 0 (
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echo Compilation successful!
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echo Running the Music Player application...
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echo.
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music_player.exe
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) else (
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echo Compilation failed!
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echo Please check for any syntax errors.
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)
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pause

‎Src/Music_Player_Application/compile.sh‎

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#!/bin/bash
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echo "Compiling Lecture 18 C++ Music Player System..."
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# Compile the main program
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g++ -std=c++11 -I. -o music_player main.cpp
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if [ $? -eq 0 ]; then
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echo "Compilation successful!"
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echo "Running the Music Player application..."
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echo
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./music_player
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else
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echo "Compilation failed!"
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echo "Please check for any syntax errors."
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fi

‎Src/Music_Player_Application/core/AudioEngine.hpp‎

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#pragma once
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#include "../models/Song.hpp"
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#include "../device/IAudioOutputDevice.hpp"
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#include<string>
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#include<iostream>
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using namespace std;
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class AudioEngine {
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private:
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Song* currentSong;
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bool songIsPaused;
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public:
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AudioEngine() {
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currentSong = nullptr;
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songIsPaused = false;
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}
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string getCurrentSongTitle() const {
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if (currentSong) {
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return currentSong->getTitle();
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}
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return "";
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}
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bool isPaused() const {
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return songIsPaused;
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}
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void play(IAudioOutputDevice* aod, Song* song) {
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if (song == nullptr) {
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throw runtime_error("Cannot play a null song.");
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}
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// Resume if same song was paused
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if (songIsPaused && song == currentSong) {
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songIsPaused = false;
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cout << "Resuming song: " << song->getTitle() << "\n";
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aod->playAudio(song);
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return;
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}
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currentSong = song;
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songIsPaused = false;
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cout << "Playing song: " << song->getTitle() << "\n";
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aod->playAudio(song);
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}
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void pause() {
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if (currentSong == nullptr) {
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throw runtime_error("No song is currently playing to pause.");
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}
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if (songIsPaused) {
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throw runtime_error("Song is already paused.");
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}
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songIsPaused = true;
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cout << "Pausing song: " << currentSong->getTitle() << "\n";
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}
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};

‎Src/Music_Player_Application/device/BluetoothSpeakerAdapter.hpp‎

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#pragma once
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#include "../models/Song.hpp"
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#include "IAudioOutputDevice.hpp"
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#include "../external/BluetoothSpeakerAPI.hpp"
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using namespace std;
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class BluetoothSpeakerAdapter : public IAudioOutputDevice {
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private:
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BluetoothSpeakerAPI* bluetoothApi;
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public:
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BluetoothSpeakerAdapter(BluetoothSpeakerAPI* api) {
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bluetoothApi = api;
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}
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void playAudio(Song* song) override {
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string payload = song->getTitle() + " by " + song->getArtist();
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bluetoothApi->playSoundViaBluetooth(payload);
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}
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};

‎Src/Music_Player_Application/device/HeadphonesAdapter.hpp‎

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#pragma once
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#include "../models/Song.hpp"
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#include "IAudioOutputDevice.hpp"
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#include "../external/HeadphonesAPI.hpp"
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using namespace std;
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class HeadphonesAdapter : public IAudioOutputDevice {
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private:
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HeadphonesAPI* headphonesApi;
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public:
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HeadphonesAdapter(HeadphonesAPI* api) {
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headphonesApi = api;
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}
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void playAudio(Song* song) override {
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string payload = song->getTitle() + " by " + song->getArtist();
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headphonesApi->playSoundViaJack(payload);
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}
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};
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‎Src/Music_Player_Application/device/IAudioOutputDevice.hpp‎

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#pragma once
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#include "../models/Song.hpp"
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class IAudioOutputDevice {
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public:
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virtual ~IAudioOutputDevice() {}
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virtual void playAudio(Song* song) = 0;
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};

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