private Status openStream() {
Status status = Status.OK;
boolean result = flac.setStreamConfiguration(sc);
result = result & flac.setEncodingConfiguration(ec);
if (!result) status = Status.INTERNAL_ERROR;
else {
try {
fout = new FLACFileOutputStream(outFile.getPath());
} catch (Exception e) {
e.printStackTrace();
}
if (status == Status.OK) {
flac.setOutputStream(fout);
try {
flac.openFLACStream();
} catch (IOException e) {
status = Status.INTERNAL_ERROR;
}
} else status = Status.OUTPUT_FILE_ERROR;
}
return status;
}
/**
* Encode the given input wav file to an output file.
*
* @param inputFile Input wav file to encode.
* @param outputFile Output file to write FLAC stream to. If file exists, it will be overwritten
* without prompting.
* @return Status flag for encode
*/
public javaFlacEncoder.FLAC_FileEncoder.Status encode(File inputFile, File outputFile) {
javaFlacEncoder.FLAC_FileEncoder.Status status =
javaFlacEncoder.FLAC_FileEncoder.Status.FULL_ENCODE;
this.outFile = outputFile;
// take file and initial configuration.
// open file
AudioInputStream sin = null;
AudioFormat format = null;
// File inputFile = new File("encoderTest.wav");
try {
sin = AudioSystem.getAudioInputStream(inputFile);
} catch (IOException e) {
status = javaFlacEncoder.FLAC_FileEncoder.Status.FILE_IO_ERROR;
} catch (UnsupportedAudioFileException e) {
status = javaFlacEncoder.FLAC_FileEncoder.Status.UNSUPPORTED_FILE;
} finally {
if (status != javaFlacEncoder.FLAC_FileEncoder.Status.FULL_ENCODE) return status;
}
try {
format = sin.getFormat();
// sanitize and optimize configurations
adjustConfigurations(format);
// open stream
openStream();
int frameSize = format.getFrameSize();
int sampleSize = format.getSampleSizeInBits();
int bytesPerSample = sampleSize / 8;
if (sampleSize % 8 != 0) {
// end processing now
Exception newEx = new Exception(Status.UNSUPPORTED_SAMPLE_SIZE.name());
throw newEx;
}
int channels = format.getChannels();
boolean bigEndian = format.isBigEndian();
byte[] samplesIn = new byte[(int) MAX_READ];
int samplesRead;
int framesRead;
int[] sampleData = new int[MAX_READ * channels / frameSize];
int blockSize = sc.getMaxBlockSize();
int unencodedSamples = 0;
int totalSamples = 0;
while ((samplesRead = sin.read(samplesIn, 0, MAX_READ)) != -1) {
// System.err.println("Read: " + read);
framesRead = samplesRead / (frameSize);
if (bigEndian) {
for (int i = 0; i < framesRead * channels; i++) {
int lower8Mask = 255;
int temp = 0;
int totalTemp = 0;
for (int x = bytesPerSample - 1; x >= 0; x++) {
int upShift = 8 * x;
if (x == 0) // don't mask...we want sign
temp = ((samplesIn[bytesPerSample * i + x]) << upShift);
else temp = ((samplesIn[bytesPerSample * i + x] & lower8Mask) << upShift);
totalTemp = totalTemp | temp;
}
sampleData[i] = totalTemp;
}
} else {
for (int i = 0; i < framesRead * channels; i++) {
int lower8Mask = 255;
int temp = 0;
int totalTemp = 0;
for (int x = 0; x < bytesPerSample; x++) {
int upShift = 8 * x;
if (x == bytesPerSample - 1) // don't mask...we want
// sign
temp = ((samplesIn[bytesPerSample * i + x]) << upShift);
else temp = ((samplesIn[bytesPerSample * i + x] & lower8Mask) << upShift);
totalTemp = totalTemp | temp;
}
sampleData[i] = totalTemp;
}
}
if (framesRead > 0) {
flac.addSamples(sampleData, framesRead);
unencodedSamples += framesRead;
}
// if(unencodedSamples > blockSize*100) {
if (useThreads) // Thread.yield();//
unencodedSamples -= flac.t_encodeSamples(unencodedSamples, false);
else unencodedSamples -= flac.encodeSamples(unencodedSamples, false);
totalSamples += unencodedSamples;
// unencodedSamples = 0;
// }
// System.err.println("read : "+ samplesRead);
}
totalSamples += unencodedSamples;
if (useThreads) unencodedSamples -= flac.t_encodeSamples(unencodedSamples, true);
else unencodedSamples -= flac.encodeSamples(unencodedSamples, true);
// unencodedSamples = 0;
lastTotalSamples = totalSamples;
} catch (IOException e) {
status = javaFlacEncoder.FLAC_FileEncoder.Status.FILE_IO_ERROR;
} catch (Exception e) {
status = javaFlacEncoder.FLAC_FileEncoder.Status.GENERAL_ERROR;
String message = e.getMessage();
if (message == null) {
e.printStackTrace();
} else if (message.equals(
javaFlacEncoder.FLAC_FileEncoder.Status.UNSUPPORTED_SAMPLE_SIZE.name()))
status = javaFlacEncoder.FLAC_FileEncoder.Status.UNSUPPORTED_SAMPLE_SIZE;
}
// System.err.print("LastTotalSamples: "+lastTotalSamples);
return status;
}
