use of net.sourceforge.javaflacencoder.FLACFileOutputStream in project java-google-speech-api by goxr3plus.
the class FlacEncoder method convertWaveToFlac.
/**
* Converts a wave file to a FLAC file(in order to POST the data to Google and retrieve a response) <br>
* Sample Rate is 8000 by default
*
* @param inputFile Input wave file
* @param outputFile Output FLAC file
*/
public void convertWaveToFlac(File inputFile, File outputFile) {
StreamConfiguration streamConfiguration = new StreamConfiguration();
streamConfiguration.setSampleRate(8000);
streamConfiguration.setBitsPerSample(16);
streamConfiguration.setChannelCount(1);
try {
AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(inputFile);
AudioFormat format = audioInputStream.getFormat();
int frameSize = format.getFrameSize();
FLACEncoder flacEncoder = new FLACEncoder();
FLACFileOutputStream flacOutputStream = new FLACFileOutputStream(outputFile);
flacEncoder.setStreamConfiguration(streamConfiguration);
flacEncoder.setOutputStream(flacOutputStream);
flacEncoder.openFLACStream();
int frameLength = (int) audioInputStream.getFrameLength();
if (frameLength <= AudioSystem.NOT_SPECIFIED) {
// Arbitrary file size
frameLength = 16384;
}
int[] sampleData = new int[frameLength];
byte[] samplesIn = new byte[frameSize];
int i = 0;
while (audioInputStream.read(samplesIn, 0, frameSize) != -1) {
if (frameSize != 1) {
ByteBuffer bb = ByteBuffer.wrap(samplesIn);
bb.order(ByteOrder.LITTLE_ENDIAN);
short shortVal = bb.getShort();
sampleData[i] = shortVal;
} else {
sampleData[i] = samplesIn[0];
}
i++;
}
sampleData = truncateNullData(sampleData, i);
flacEncoder.addSamples(sampleData, i);
flacEncoder.encodeSamples(i, false);
flacEncoder.encodeSamples(flacEncoder.samplesAvailableToEncode(), true);
audioInputStream.close();
flacOutputStream.close();
} catch (Exception ex) {
ex.printStackTrace();
}
}
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