@Override public int onAudioData(byte[] data) { if (audioLine != null && audioLine.isOpen()) { if (!audioLine.isRunning()) { audioLine.start(); } int toWrite = Math.min(audioLine.available(), data.length); if (toWrite == audioLine.available()) log.trace("full! toWrite: " + toWrite + " instead of: " + data.length); return audioLine.write(data, 0, toWrite); } else { return 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(); } }