Der Morsecode (Java)

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Autor: Oliver Clauß (2011)

Mit diesem Java-Formular kann man einen Text eingeben und diesen in Morseschrift wieder ausgeben lassen.

javax.sound.sampled.AudioFormat audioFormat; javax.sound.sampled.AudioInputStream audioInputStream; javax.sound.sampled.SourceDataLine sourceDataLine; float sampleRate = 16000.0F; int sampleSizeInBits = 16; int channels = 1; boolean signed = true; boolean bigEndian = true; audioData = new byte[16000*16]; void fillBuffer(double startat,double freq) { java.nio.ByteBuffer byteBuffer; java.nio.ShortBuffer shortBuffer; int byteLength; byteBuffer = java.nio.ByteBuffer.wrap(audioData); shortBuffer = byteBuffer.asShortBuffer(); byteLength = audioData.length; channels = 1;//Java allows 1 or 2 int bytesPerSamp = 2; int sampLength = byteLength / bytesPerSamp; for (int cnt = 0; cnt < sampLength; cnt++) { double time = cnt / sampleRate; double sinValue = playFunction(startat/2+time,freq); shortBuffer.put((short)(16000 * sinValue)); } } void draw(double dauer, double start,double freq){ dauer = dauer * 2; double oldy = 100; canvas.setColor(200,200,200); canvas.line(0,100,600,100); canvas.setColor(0,0,0); for(int x=0; x< 600; x++) { double newy = 100+100*playFunction(start/2+((double)dauer/2/600*x),freq); if(start/2+(double)dauer/2/600*x == 0){ canvas.setColor(200,200,200); canvas.line(x,0,x,200); canvas.setColor(0,0,0); } canvas.line((x-1),(int)(oldy),x,(int)(newy)); oldy = newy; } } void play(double dauer, double startat,double freq){ dauer = dauer * 2; audioData = new byte[16000*dauer]; try { fillBuffer(startat,freq); InputStream byteArrayInputStream = new ByteArrayInputStream(audioData); audioFormat = new javax.sound.sampled.AudioFormat(sampleRate, sampleSizeInBits, channels, signed, bigEndian); audioInputStream = new javax.sound.sampled.AudioInputStream(byteArrayInputStream, audioFormat, audioData.length / audioFormat.getFrameSize()); javax.sound.sampled.DataLine.Info dataLineInfo = new javax.sound.sampled.DataLine.Info(javax.sound.sampled.SourceDataLine.class, audioFormat); sourceDataLine = (javax.sound.sampled.SourceDataLine)javax.sound.sampled.AudioSystem.getLine(dataLineInfo); sourceDataLine.open(audioFormat); sourceDataLine.start(); playBuffer = new byte[16384]; int cnt; while ((cnt = audioInputStream.read(playBuffer, 0,playBuffer.length))!= -1) if (cnt > 0) sourceDataLine.write(playBuffer, 0, cnt); sourceDataLine.drain(); sourceDataLine.stop(); sourceDataLine.close(); } catch (Exception e){e.printStackTrace();System.exit(0);} }

double playFunction(double x, double freq){ double sinValue = Math.sin(2*Math.PI*freq*x); return sinValue; } public void morseAusgabe() { String morse = new String(); String morsekette = ""; morse = JOptionPane.showInputDialog(null, "Gib den Text ein!"); for (int i = 0; i < morse.length(); i++) { String zeichen = morse.substring(i, i+1).toUpperCase(); switch (zeichen) { case "A": morsekette = morsekette + " .-"; break; case "B": morsekette = morsekette + " -..."; break; case "C": morsekette = morsekette + " -.-."; break; case "D": morsekette = morsekette + " -.."; break; case "E": morsekette = morsekette + " ."; break; case "F": morsekette = morsekette + " ..-."; break; case "G": morsekette = morsekette + " --."; break; case "H": morsekette = morsekette + " ...."; break; case "I": morsekette = morsekette + " .."; break; case "J": morsekette = morsekette + " .---"; break; case "K": morsekette = morsekette + " -.-"; break; case "L": morsekette = morsekette + " .-.."; break; case "M": morsekette = morsekette + " --"; break; case "N": morsekette = morsekette + " -."; break; case "O": morsekette = morsekette + " ---"; break; case "P": morsekette = morsekette + " .--."; break; case "Q": morsekette = morsekette + " --.-"; break; case "R": morsekette = morsekette + " .-."; break; case "S": morsekette = morsekette + " ..."; break; case "T": morsekette = morsekette + " -"; break; case "U": morsekette = morsekette + " ..-"; break; case "V": morsekette = morsekette + " ...-"; break; case "W": morsekette = morsekette + " .--"; break; case "X": morsekette = morsekette + " -..-"; break; case "Y": morsekette = morsekette + " -.--"; break; case "Z": morsekette = morsekette + " --.."; break; case "0": morsekette = morsekette + " -----"; break; case "1": morsekette = morsekette + " .----"; break; case "2": morsekette = morsekette + " ..---"; break; case "3": morsekette = morsekette + " ...--"; break; case "4": morsekette = morsekette + " ....-"; break; case "5": morsekette = morsekette + " ....."; break; case "6": morsekette = morsekette + " -...."; break; case "7": morsekette = morsekette + " --..."; break; case "8": morsekette = morsekette + " ---.."; break; case "9": morsekette = morsekette + " ----."; break; case "Ä": morsekette = morsekette + " .-.-"; break; case "Ö": morsekette = morsekette + " ---."; break; case "Ü": morsekette = morsekette + " ..--"; break; case "ß": morsekette = morsekette + " ...--.."; break; case ".": morsekette = morsekette + " .-.-.-"; break; case ":": morsekette = morsekette + " ---..."; break; case ",": morsekette = morsekette + " --..--"; break; case ";": morsekette = morsekette + " -.-.-."; break; case "?": morsekette = morsekette + " ..--.."; break; case "-": morsekette = morsekette + " -....-"; break; case "_": morsekette = morsekette + " ..--.-"; break; case "(": morsekette = morsekette + " -.--."; break; case ")": morsekette = morsekette + " -.--.-"; break; case "'": morsekette = morsekette + " .----."; break; case "=": morsekette = morsekette + " -...-"; break; case "+": morsekette = morsekette + " .-.-."; break; case "/": morsekette = morsekette + " -..-."; break; case "@": morsekette = morsekette + " .--.-."; break; case " ": morsekette = morsekette + "/"; break; default: morsekette = morsekette + "?"; } } System.out.println(morsekette); canvas.clear(); int posx = 0; int posy = 20; for (int i = 0; i < morsekette.length(); i++) { String zeichen = morsekette.substring(i, i+1).toUpperCase(); switch (zeichen) { case ".": play(0.2,0,1000.0); dauer = 1000/4; canvas.fillRect(posx, posy, dauer/20, 10); // 1 kurzer Balken entspricht einem "Punkt" im Morsealphabet. posx = posx + dauer/20 + 5; if (posx > 780) { posx = 0; posy = posy + 20; } break; case "-": play(0.6,0,1000.0); dauer = 1000/1; canvas.fillRect(posx, posy, dauer/20, 10); // 1 langer Balken entspricht einem "Strich" im Morsealphabet. posx = posx + dauer/20 + 5; if (posx > 780) { posx = 0; posy = posy + 20; } break; case " ": play(0.6,0,0.0); dauer = 300/1; canvas.fillRect(posx, posy, dauer/20, 00); // 1 Strich entspricht einer Pause zwischen 2 Buchstaben. posx = posx + dauer/20 + 5; if (posx > 780) { posx = 0; posy = posy + 20; } break; case "/": play(1.0,0,0.0); dauer = 300/1; canvas.fillRect(posx, posy, dauer/20, 00); // 2 Striche entsprechen einer Pause zwischen 2 Wörtern. posx = posx + dauer/20 + 5; if (posx > 780) { posx = 0; posy = posy + 20; } break; } } }

morseAusgabe();

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