ОргЭВМ_лаб5
.docx
Санкт-Петербургский государственный электротехнический университет имени В. И. Ленина
Кафедра Вычислительной техники
ОТЧЕТ
По лабораторной работе № 5 в дисциплине ОргЭВМ
Работу выполнил: Иванов Серафим Кириллович, 0392
Работу проверил: Ельчанинов М. Н
2021 год
Задание на работу:
Разработать виртуальное фортепиано, работающее на прерываниях
Реализовать возможность игры с помощью клавиатуры и мыши
Блок схема программы:
Код реализации на языке Java с использованием библиотеки Swing:
package com.company; import javax.imageio.ImageIO; import javax.swing.*; import javax.sound.midi.*; import java.awt.*; import java.awt.event.*; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.Timer; import javax.swing.JFrame; class Piano extends JComponent implements KeyListener, MouseListener { static int vol = 100; static int[] codes = new int[131]; BufferedImage _image; BufferedImage _druz; private int pedal = 0; MidiChannel obj; static int shift = 48; ArrayList<Integer> notes; private int mouse_note(int x, int y) { if (y > 213) { int i = 0; if (x < 1582) { i++; }if (x < 1475) { i++; i++; }if (x < 1033) { i++; i++; }if (x < 979) { i++; i++; }if (x < 923) { i++; } if (x < 868) { i++; i++; }if (x < 814) { i++; i++; }if (x < 759) { i++; }if (x < 704) { i++; i++; }if (x < 647) { i++; i++; }if (x < 594) { i++; i++; }if (x < 538) { i++; }if (x < 484) { i++; i++; }if (x < 430) { i++; i++; }if (x < 370) { i++; }if (x < 318) { i++; i++; }if (x < 263) { i++; i++; }if (x < 207) { i++; i++; }if (x < 152) { i++; }if (x < 96) { i++; i++; } if (x < 42) { i++; i++; }return (96 - i); } else { int i = 94;
if (x < 1430) { i -= 2; }if (x < 1366) { i -= 2; }if (x < 1273) { i -= 2; i--; }if (x < 1208) { i -= 2; }if (x < 1110) { i -= 2; i--; }if (x < 1046) { i -= 2; }if (x < 983) { i -= 2; }if (x < 888) { i -= 2; i--; }if (x < 822) { i -= 2; }if (x < 724) { i -= 2; i--; }if (x < 660) { i -= 2; }if (x < 598) { i -= 2; }if (x < 503) { i -= 2; i--; }if (x < 438) { i -= 2; }if (x < 338) { i -= 2; i--; }if (x < 274) { i -= 2; }if (x < 214) { i -= 2; }if (x < 117) { i -= 2; i--; }if (x < 54) { i -= 2; }return (i); } } public void paint(Graphics g) { g.drawImage(this._image, 0, 0, null); g.drawImage(this._druz, 0, 303, null); } Piano(MidiChannel channel) throws IOException { this._image = ImageIO.read(new File("C:\\java\\1.jpg")); this._druz = ImageIO.read(new File("C:\\java\\2.jpg")); for (int i = 0; i < 131; i++) { codes[i] = 0; } codes[81] = 0;//ut codes[50] = 1;//# codes[87] = 2;//re codes[51] = 3;//# codes[69] = 4;//mi codes[82] = 5;//fa codes[53] = 6;//# codes[84] = 7;//sol codes[54] = 8;//# codes[89] = 9;//lya codes[55] = 10;//# codes[85] = 11;// codes[90] = 12;//ut codes[83] = 13;//# codes[88] = 14;//re codes[68] = 15;//# codes[67] = 16;//mi codes[86] = 17;//fa codes[71] = 18;//# codes[66] = 19;//sol codes[72] = 20;//# codes[78] = 21;//lya codes[74] = 22;//# codes[77] = 23;// notes = new ArrayList<>(); obj = channel; System.out.println("Init complete"); } public void setPedal(int status) { if(pedal == 1 && status == 0) { System.out.println("Pedal off!"); } else if (pedal == 0 && status == 1) { System.out.println("Pedal on!"); } pedal = status; } private void play(int note, int vol) { if (!notes.contains(note)) { System.out.println("Note's code: " + note); obj.noteOn(note, vol); notes.add(note); } } private void stop(int note) { if (pedal == 0) { obj.noteOff(note); } for (int i = 0; i < notes.size(); i++) { if (notes.get(i) == note) { notes.remove(i); break; } } } public void clear() { for (int i = 0; i < 131; i++) { obj.noteOff(i); } notes.clear(); } @Override public void keyPressed(KeyEvent e) { int note = e.getKeyCode(); if (note == 32) { setPedal(1); } else if (note == KeyEvent.VK_ALT) { try { Melody.start(this); } catch (InterruptedException interruptedException) { interruptedException.printStackTrace(); } } else if (note == KeyEvent.VK_ENTER) { try { Classic.start(this); } catch (InterruptedException interruptedException) { interruptedException.printStackTrace(); } } else { note = codes[note] + shift; play(note, vol); } } @Override public void keyReleased(KeyEvent e) { int note = e.getKeyCode(); if (note == 32) { setPedal(0); clear(); } else { note = codes[note] + shift; stop(note); } } @Override public void mousePressed(MouseEvent e) { play(mouse_note(e.getX(), e.getY()), vol); } @Override public void mouseReleased(MouseEvent e) { stop(mouse_note(e.getX(), e.getY())); } public void play_accord(int x1, int x2, int x3, int x4) { play(x1, vol); play(x2, vol); play(x3, vol); play(x4, vol); } public void stop_accord(int x1, int x2, int x3, int x4) { stop(x1); stop(x2); stop(x3); stop(x4); } public void p(int x, int vol) { s(x); play(x, vol); } public void s(int x) { stop(x); } } class Melody { static Timer timer; public static void start(Piano piano) throws InterruptedException { int d1 = 650; int d2 = 450; int d3 = 210; timer = new Timer(); piano.play_accord(70, 70, 70, 70); Thread.sleep(d3); piano.stop_accord(63, 58, 54, 39); piano.stop_accord(70, 70, 70, 70); piano.play_accord(67, 62, 58, 43); Thread.sleep(d1); piano.stop_accord(67, 62, 58, 43); piano.play_accord(63, 58, 54, 39); Thread.sleep(d2); piano.play_accord(70, 70, 70, 70); Thread.sleep(d3); piano.stop_accord(63, 58, 54, 39); piano.stop_accord(70, 70, 70, 70); piano.play_accord(67, 62, 58, 43); Thread.sleep(2 * d1); piano.stop_accord(67, 62, 58, 43); piano.play_accord(74, 70, 67, 43); Thread.sleep(d1); piano.stop_accord(74, 70, 67, 43); piano.play_accord(74, 70, 67, 43); Thread.sleep(d1); piano.stop_accord(74, 70, 67, 43); piano.play_accord(74, 70, 67, 43); Thread.sleep(d1); piano.stop_accord(74, 70, 67, 43); piano.play_accord(75, 70, 66, 39); Thread.sleep(d2); piano.stop_accord(70, 0, 0, 0); piano.play_accord(70, 70, 70, 70); Thread.sleep(d3); piano.stop_accord(75, 70, 66, 39); piano.stop_accord(70, 70, 70, 70); piano.play_accord(66, 63, 58, 39); Thread.sleep(d1); } } class Classic { static int d1 = 500; static int d2 = 250; static int d3 = 500; static int q1 = 80; static int q2 = 40; static int o = 12; public static void start(Piano p) throws InterruptedException { p.setPedal(1);p.p(62 + o, q2); p.p(65 + o, q2); p.p(58 - o, q1); p.p(58 + o, q1); p.p(58, q1); Thread.sleep(d1); p.p(64 + o, q1); p.p(67 + o, q1); Thread.sleep(d1); p.clear();p.p(65 + o, q1); p.p(68 + o, q1); p.p(53, q1); Thread.sleep(d2); p.p(56, q1 - 50); Thread.sleep(d2); p.p(60, q1 - 50); Thread.sleep(d2); p.p(56, q1 - 50); Thread.sleep(d2); p.p(65, q1); Thread.sleep(d2); p.p(48, q1); p.p(60, q1); p.s(65 + o); p.p(65 + o, q1); Thread.sleep(d1); p.p(67 + o, q1); Thread.sleep(d1); p.clear(); p.setPedal(1); p.p(68 + o, q1); p.p(65 + o, q1); p.p(41, q1); Thread.sleep(d2); p.p(56, q1 - 50); Thread.sleep(d2);
p.p(60 + o, q1 - 50); Thread.sleep(d2);.p(56, q1 - 50);
p.p(67 + o, q1); Thread.sleep(d1);p.s(65 + o);\ p.s(60 + o); p.p(65 + o, q1); p.p(60 + o, q1); Thread.sleep(d1); p.clear();p.p(67 + o, q1); p.p(48, q1); Thread.sleep(d2); p.p(55, q1); Thread.sleep(d1); p.p(60 + o, q1); Thread.sleep(1000); } } public class Main { public static void main(String[] args) throws MidiUnavailableException, InterruptedException, IOException { JFrame frame = new JFrame(); frame.setSize(1520, 600);//2000 x 340 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //frame.setTitle("Analysis"); frame.setLocation(5, 5); frame.setTitle("Внимание, пеонина!"); //MYP myp = new MYP(); Sequencer sequencer = MidiSystem.getSequencer(); sequencer.open(); Synthesizer synth = MidiSystem.getSynthesizer(); synth.open(); MidiChannel[] channels = synth.getChannels(); MidiChannel synthChannel = channels[channels.length - 1]; synthChannel.programChange(0); Piano piano = new Piano(synthChannel); frame.add(piano); frame.addKeyListener(piano); frame.repaint(); frame.addMouseListener(piano); frame.setVisible(true); Thread.sleep(1000); } }
