Пример #1
0
 public static BufferedImage scaleImage(BufferedImage bi, double scale) {
   int w1 = (int) (Math.round(scale * bi.getWidth()));
   int h1 = (int) (Math.round(scale * bi.getHeight()));
   BufferedImage image = new BufferedImage(w1, h1, BufferedImage.TYPE_INT_RGB);
   Graphics2D g2 = image.createGraphics();
   g2.setRenderingHint(
       RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
   g2.setPaint(Color.white);
   g2.fillRect(0, 0, w1, h1);
   g2.drawImage(bi, 0, 0, w1, h1, null); // this);
   g2.dispose();
   return image;
 }
Пример #2
0
 public void play(InputStream source) {
   int bufferSize = format.getFrameSize() * Math.round(format.getSampleRate() / 10);
   byte[] buffer = new byte[bufferSize];
   SourceDataLine line;
   try {
     DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
     line = (SourceDataLine) AudioSystem.getLine(info);
     line.open(format, bufferSize);
   } catch (LineUnavailableException e) {
     e.printStackTrace();
     return;
   }
   line.start();
   try {
     int numBytesRead = 0;
     while (numBytesRead != -1) {
       numBytesRead = source.read(buffer, 0, buffer.length);
       if (numBytesRead != -1) line.write(buffer, 0, numBytesRead);
     }
   } catch (IOException e) {
     e.printStackTrace();
   }
   line.drain();
   line.close();
 }
Пример #3
0
  /** Signals that a PooledThread has started. Creates the Thread's line and buffer. */
  protected void threadStarted() {
    // wait for the SoundManager constructor to finish
    synchronized (this) {
      try {
        wait();
      } catch (InterruptedException ex) {
      }
    }

    // use a short, 100ms (1/10th sec) buffer for filters that
    // change in real-time
    int bufferSize =
        playbackFormat.getFrameSize() * Math.round(playbackFormat.getSampleRate() / 10);

    // create, open, and start the line
    SourceDataLine line;
    DataLine.Info lineInfo = new DataLine.Info(SourceDataLine.class, playbackFormat);
    try {
      line = (SourceDataLine) AudioSystem.getLine(lineInfo);
      line.open(playbackFormat, bufferSize);
    } catch (LineUnavailableException ex) {
      // the line is unavailable - signal to end this thread
      Thread.currentThread().interrupt();
      return;
    }

    line.start();

    // create the buffer
    byte[] buffer = new byte[bufferSize];

    // set this thread's locals
    localLine.set(line);
    localBuffer.set(buffer);
  }
Пример #4
0
 /** 列に周波数とバイト列の長さ指定で形を書き込む */
 public void writeNote(double frequency, int sampleCount) {
   byte[] b = new byte[sampleRate];
   double amplitude = sampleRate / frequency; // 波長
   for (int i = 0; i < b.length; i++) {
     double r = i / amplitude;
     b[i] = (byte) ((Math.round(r) % 2 == 0) ? 100 : -100);
   } // 再生(バイト列をlineに書き込む)
   line.write(b, 0, b.length);
 }
Пример #5
0
 public void writeNote(double frequency) {
   byte[] b = new byte[sampleRate];
   for (int i = 0; i < b.length; i++) {
     double r = i / (sampleRate / frequency);
     b[i] = (byte) ((Math.round(r) % 2 == 0) ? 100 : -100);
   }
   // 再生(バイト列をlineに書き込む)
   line.write(b, 0, b.length);
   line.drain(); // 終了まで
 }
Пример #6
0
 /** バイト列に周波数、ベロシティ指定で波形書き込む */
 public void writeWave(byte[] b, double frequency, int velocity) {
   double amplitude = sampleRate / frequency; // 波長
   for (int i = 0; i < b.length; i++) {
     double r = i / amplitude;
     int v = (byte) ((Math.round(r) % 2 == 0) ? velocity : -velocity);
     v += b[i];
     v = Math.min(Math.max(v, -128), 127);
     b[i] = (byte) v;
   }
   // 再生(バイト列をlineに書き込む)
   line.write(b, 0, b.length);
 }
Пример #7
0
  private static WAVData readFromStream(AudioInputStream aIn)
      throws UnsupportedAudioFileException, IOException {
    ReadableByteChannel aChannel = Channels.newChannel(aIn);
    AudioFormat fmt = aIn.getFormat();
    int numChannels = fmt.getChannels();
    int bits = fmt.getSampleSizeInBits();
    int format = AL_FORMAT_MONO8;

    if ((bits == 8) && (numChannels == 1)) {
      format = AL_FORMAT_MONO8;
    } else if ((bits == 16) && (numChannels == 1)) {
      format = AL_FORMAT_MONO16;
    } else if ((bits == 8) && (numChannels == 2)) {
      format = AL_FORMAT_STEREO8;
    } else if ((bits == 16) && (numChannels == 2)) {
      format = AL_FORMAT_STEREO16;
    }

    int freq = Math.round(fmt.getSampleRate());
    int size = aIn.available();
    ByteBuffer buffer = ByteBuffer.allocateDirect(size);
    while (buffer.remaining() > 0) {
      aChannel.read(buffer);
    }
    buffer.rewind();

    // Must byte swap on big endian platforms
    // Thanks to swpalmer on javagaming.org forums for hint at fix
    if ((bits == 16) && (ByteOrder.nativeOrder() == ByteOrder.BIG_ENDIAN)) {
      int len = buffer.remaining();
      for (int i = 0; i < len; i += 2) {
        byte a = buffer.get(i);
        byte b = buffer.get(i + 1);
        buffer.put(i, b);
        buffer.put(i + 1, a);
      }
    }

    WAVData result = new WAVData(buffer, format, size, freq, false);
    aIn.close();

    return result;
  }
Пример #8
0
  // 播放au,aiff,wav音乐流, 这个函数基本完全为帖子上的代码
  private synchronized void play() {
    ByteArrayInputStream aMusicInputStream;
    AudioFormat format;
    AudioInputStream musicInputStream;
    byte[] audioSamples;
    SourceDataLine line;
    try {
      File MusicFile = new File(m_filename);

      musicInputStream = AudioSystem.getAudioInputStream(MusicFile); // 取得文件的音频输入流
      format = musicInputStream.getFormat(); // 取得音频输入流的格式
      audioSamples = getAudioSamples(musicInputStream, format); // 取得音频样本

      aMusicInputStream = new ByteArrayInputStream(audioSamples);
      int bufferSize = format.getFrameSize() * Math.round(format.getSampleRate() / 10);
      byte[] buffer = new byte[bufferSize];
      try {
        DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
        line = (SourceDataLine) AudioSystem.getLine(info);
        line.open(format, bufferSize);
      } catch (LineUnavailableException e) {
        e.printStackTrace();
        return;
      }

      if (!line.isRunning()) {
        line.start();
      }

      int numBytesRead = 0;
      while (numBytesRead != -1 && !m_stopped) {
        numBytesRead = aMusicInputStream.read(buffer, 0, buffer.length);
        if (numBytesRead != -1) {
          line.write(buffer, 0, numBytesRead);
        }
      }
      line.drain();
      line.close();
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
Пример #9
0
 private byte getByteValue(double angle) {
   return (new Integer((int) Math.round(Math.sin(angle) * 63))).byteValue();
 }