UlawCodecStream(AudioInputStream stream, AudioFormat outputFormat) {
super(stream, outputFormat, AudioSystem.NOT_SPECIFIED);
AudioFormat inputFormat = stream.getFormat();
// throw an IllegalArgumentException if not ok
if (!(isConversionSupported(outputFormat, inputFormat))) {
throw new IllegalArgumentException(
"Unsupported conversion: " + inputFormat.toString() + " to " + outputFormat.toString());
}
// $$fb 2002-07-18: fix for 4714846: JavaSound ULAW (8-bit) encoder erroneously depends on
// endian-ness
boolean PCMIsBigEndian;
// determine whether we are encoding or decoding
if (AudioFormat.Encoding.ULAW.equals(inputFormat.getEncoding())) {
encode = false;
encodeFormat = inputFormat;
decodeFormat = outputFormat;
PCMIsBigEndian = outputFormat.isBigEndian();
} else {
encode = true;
encodeFormat = outputFormat;
decodeFormat = inputFormat;
PCMIsBigEndian = inputFormat.isBigEndian();
tempBuffer = new byte[tempBufferSize];
}
// setup tables according to byte order
if (PCMIsBigEndian) {
tabByte1 = ULAW_TABH;
tabByte2 = ULAW_TABL;
highByte = 0;
lowByte = 1;
} else {
tabByte1 = ULAW_TABL;
tabByte2 = ULAW_TABH;
highByte = 1;
lowByte = 0;
}
// set the AudioInputStream length in frames if we know it
if (stream instanceof AudioInputStream) {
frameLength = ((AudioInputStream) stream).getFrameLength();
}
// set framePos to zero
framePos = 0;
frameSize = inputFormat.getFrameSize();
if (frameSize == AudioSystem.NOT_SPECIFIED) {
frameSize = 1;
}
}
/**
* Sets the InputStream from which this StreamDataSource reads.
*
* @param inputStream the InputStream from which audio data comes
* @param streamName the name of the InputStream
*/
public void setInputStream(AudioInputStream inputStream, String streamName) {
dataStream = inputStream;
streamEndReached = false;
utteranceEndSent = false;
utteranceStarted = false;
AudioFormat format = inputStream.getFormat();
sampleRate = (int) format.getSampleRate();
bigEndian = format.isBigEndian();
String s = format.toString();
logger.finer("input format is " + s);
if (format.getSampleSizeInBits() % 8 != 0)
throw new Error("StreamDataSource: bits per sample must be a multiple of 8.");
bytesPerValue = format.getSampleSizeInBits() / 8;
// test whether all files in the stream have the same format
AudioFormat.Encoding encoding = format.getEncoding();
if (encoding.equals(AudioFormat.Encoding.PCM_SIGNED)) signedData = true;
else if (encoding.equals(AudioFormat.Encoding.PCM_UNSIGNED)) signedData = false;
else throw new RuntimeException("used file encoding is not supported");
totalValuesRead = 0;
}
/**
* Store an AudioFormat
*
* @param audioFormat
*/
public AudioFormatTransport(AudioFormat audioFormat) {
_channels = audioFormat.getChannels();
_encoding = audioFormat.getEncoding().toString();
_frameRate = audioFormat.getFrameRate();
_frameSize = audioFormat.getFrameSize();
_sampleRate = audioFormat.getSampleRate();
_sampleSizeInBits = audioFormat.getSampleSizeInBits();
_isBigEndian = audioFormat.isBigEndian();
_properties = audioFormat.properties();
}
public void open(AudioInputStream stream) throws IOException, LineUnavailableException {
AudioInputStream is1;
format = stream.getFormat();
if (format.getEncoding() != AudioFormat.Encoding.PCM_SIGNED) {
is1 = AudioSystem.getAudioInputStream(AudioFormat.Encoding.PCM_SIGNED, stream);
} else {
is1 = stream;
}
format = is1.getFormat();
InputStream is2;
if (parent != null) {
ProgressMonitorInputStream pmis =
new ProgressMonitorInputStream(parent, "Loading track..", is1);
pmis.getProgressMonitor().setMillisToPopup(0);
is2 = pmis;
} else {
is2 = is1;
}
byte[] buf = new byte[2 ^ 16];
int totalRead = 0;
int numRead = 0;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
numRead = is2.read(buf);
while (numRead > -1) {
baos.write(buf, 0, numRead);
numRead = is2.read(buf, 0, buf.length);
totalRead += numRead;
}
is2.close();
audioData = baos.toByteArray();
AudioFormat afTemp;
if (format.getChannels() < 2) {
afTemp =
new AudioFormat(
format.getEncoding(),
format.getSampleRate(),
format.getSampleSizeInBits(),
2,
format.getSampleSizeInBits() * 2 / 8, // calculate
// frame
// size
format.getFrameRate(),
format.isBigEndian());
} else {
afTemp = format;
}
setLoopPoints(0, audioData.length);
dataLine = AudioSystem.getSourceDataLine(afTemp);
dataLine.open();
inputStream = new ByteArrayInputStream(audioData);
}
public AudioInputStream getAudioInputStream(
AudioFormat.Encoding targetEncoding, AudioInputStream sourceStream) {
AudioFormat sourceFormat = sourceStream.getFormat();
AudioFormat.Encoding sourceEncoding = sourceFormat.getEncoding();
if (sourceEncoding.equals(targetEncoding)) {
return sourceStream;
} else {
AudioFormat targetFormat = null;
if (!isConversionSupported(targetEncoding, sourceStream.getFormat())) {
throw new IllegalArgumentException(
"Unsupported conversion: "
+ sourceStream.getFormat().toString()
+ " to "
+ targetEncoding.toString());
}
if (AudioFormat.Encoding.ULAW.equals(sourceEncoding)
&& AudioFormat.Encoding.PCM_SIGNED.equals(targetEncoding)) {
targetFormat =
new AudioFormat(
targetEncoding,
sourceFormat.getSampleRate(),
16,
sourceFormat.getChannels(),
2 * sourceFormat.getChannels(),
sourceFormat.getSampleRate(),
sourceFormat.isBigEndian());
} else if (AudioFormat.Encoding.PCM_SIGNED.equals(sourceEncoding)
&& AudioFormat.Encoding.ULAW.equals(targetEncoding)) {
targetFormat =
new AudioFormat(
targetEncoding,
sourceFormat.getSampleRate(),
8,
sourceFormat.getChannels(),
sourceFormat.getChannels(),
sourceFormat.getSampleRate(),
false);
} else {
throw new IllegalArgumentException(
"Unsupported conversion: "
+ sourceStream.getFormat().toString()
+ " to "
+ targetEncoding.toString());
}
return getAudioInputStream(targetFormat, sourceStream);
}
}
/** Convert javax.sound.sampled.AudioFormat to javax.media.format.AudioFormat. */
public static AudioFormat convertFormat(javax.sound.sampled.AudioFormat format) {
Encoding encoding = format.getEncoding();
int channels = format.getChannels();
float frameRate = format.getFrameRate();
int frameSize = format.getFrameSize() < 0 ? format.getFrameSize() : (format.getFrameSize() * 8);
float sampleRate = format.getSampleRate();
int sampleSize = format.getSampleSizeInBits();
int endian = format.isBigEndian() ? AudioFormat.BIG_ENDIAN : AudioFormat.LITTLE_ENDIAN;
int signed = AudioFormat.NOT_SPECIFIED;
String encodingString = AudioFormat.LINEAR;
if (encoding == Encoding.PCM_SIGNED) {
signed = AudioFormat.SIGNED;
encodingString = AudioFormat.LINEAR;
} else if (encoding == Encoding.PCM_UNSIGNED) {
signed = AudioFormat.UNSIGNED;
encodingString = AudioFormat.LINEAR;
} else if (encoding == Encoding.ALAW) {
encodingString = AudioFormat.ALAW;
} else if (encoding == Encoding.ULAW) {
encodingString = AudioFormat.ULAW;
} else {
encodingString = encoding.toString();
}
AudioFormat jmfFormat =
new AudioFormat(
encodingString,
(double) sampleRate,
sampleSize,
channels,
endian,
signed,
frameSize,
frameRate,
AudioFormat.byteArray);
return jmfFormat;
}
public float[] extractFloatDataFromAmplitudeByteArray(AudioFormat format, byte[] audioBytes) {
// convert
audioData = null;
if (format.getSampleSizeInBits() == 16) {
int nlengthInSamples = audioBytes.length / 2;
audioData = new float[nlengthInSamples];
if (format.isBigEndian()) {
for (int i = 0; i < nlengthInSamples; i++) {
/* First byte is MSB (high order) */
int MSB = audioBytes[2 * i];
/* Second byte is LSB (low order) */
int LSB = audioBytes[2 * i + 1];
audioData[i] = MSB << 8 | (255 & LSB);
}
} else {
for (int i = 0; i < nlengthInSamples; i++) {
/* First byte is LSB (low order) */
int LSB = audioBytes[2 * i];
/* Second byte is MSB (high order) */
int MSB = audioBytes[2 * i + 1];
audioData[i] = MSB << 8 | (255 & LSB);
}
}
} else if (format.getSampleSizeInBits() == 8) {
int nlengthInSamples = audioBytes.length;
audioData = new float[nlengthInSamples];
if (format.getEncoding().toString().startsWith("PCM_SIGN")) {
for (int i = 0; i < audioBytes.length; i++) {
audioData[i] = audioBytes[i];
}
} else {
for (int i = 0; i < audioBytes.length; i++) {
audioData[i] = audioBytes[i] - 128;
}
}
} // end of if..else
// System.out.println("PCM Returned===============" +
// audioData.length);
return audioData;
}
private void getAudioData() {
if (format.getSampleSizeInBits() == 16) {
nlengthInSamples = audioBytes.length / 2;
audioData = new int[nlengthInSamples];
if (format.isBigEndian()) {
for (int i = 0; i < nlengthInSamples; i++) {
// First byte is MSB (high order)
int MSB = (int) audioBytes[2 * i];
// Second byte is LSB (low order)
int LSB = (int) audioBytes[2 * i + 1];
audioData[i] = MSB << 8 | (255 & LSB);
}
} else {
for (int i = 0; i < nlengthInSamples; i++) {
// First byte is LSB (low order)
int LSB = (int) audioBytes[2 * i];
// Second byte is MSB (high order)
int MSB = (int) audioBytes[2 * i + 1];
audioData[i] = MSB << 8 | (255 & LSB);
}
}
} else {
if (format.getSampleSizeInBits() == 8) {
nlengthInSamples = audioBytes.length;
audioData = new int[nlengthInSamples];
if (format.getEncoding().toString().startsWith("PCM_SIGN")) {
for (int i = 0; i < audioBytes.length; i++) {
audioData[i] = audioBytes[i];
}
} else {
for (int i = 0; i < audioBytes.length; i++) {
audioData[i] = audioBytes[i] - 128;
}
}
}
}
}
/**
* Determines the single largest sample size of all channels of the current clip. This can be
* handy for determining a fraction to scal visual representations.
*
* @return Double between 0 & 1 representing the maximum signal level of any channel.
*/
public double getLargestSampleSize() {
int largest = 0;
int current;
boolean signed = (format.getEncoding() == AudioFormat.Encoding.PCM_SIGNED);
int bitDepth = format.getSampleSizeInBits();
boolean bigEndian = format.isBigEndian();
int samples = audioData.length * 8 / bitDepth;
if (signed) {
if (bitDepth / 8 == 2) {
if (bigEndian) {
for (int cc = 0; cc < samples; cc++) {
current = (audioData[cc * 2] * 256 + (audioData[cc * 2 + 1] & 0xFF));
if (Math.abs(current) > largest) {
largest = Math.abs(current);
}
}
} else {
for (int cc = 0; cc < samples; cc++) {
current = (audioData[cc * 2 + 1] * 256 + (audioData[cc * 2] & 0xFF));
if (Math.abs(current) > largest) {
largest = Math.abs(current);
}
}
}
} else {
for (int cc = 0; cc < samples; cc++) {
current = (audioData[cc] & 0xFF);
if (Math.abs(current) > largest) {
largest = Math.abs(current);
}
}
}
} else {
if (bitDepth / 8 == 2) {
if (bigEndian) {
for (int cc = 0; cc < samples; cc++) {
current = (audioData[cc * 2] * 256 + (audioData[cc * 2 + 1] - 0x80));
if (Math.abs(current) > largest) {
largest = Math.abs(current);
}
}
} else {
for (int cc = 0; cc < samples; cc++) {
current = (audioData[cc * 2 + 1] * 256 + (audioData[cc * 2] - 0x80));
if (Math.abs(current) > largest) {
largest = Math.abs(current);
}
}
}
} else {
for (int cc = 0; cc < samples; cc++) {
if (audioData[cc] > 0) {
current = (audioData[cc] - 0x80);
if (Math.abs(current) > largest) {
largest = Math.abs(current);
}
} else {
current = (audioData[cc] + 0x80);
if (Math.abs(current) > largest) {
largest = Math.abs(current);
}
}
}
}
}
// audioData
logger.log(Level.FINEST, "Max signal level: " + (double) largest / (Math.pow(2, bitDepth - 1)));
return (double) largest / (Math.pow(2, bitDepth - 1));
}
private InputStream getFileStream(WaveFileFormat waveFileFormat, InputStream audioStream)
throws IOException {
// private method ... assumes audioFileFormat is a supported file type
// WAVE header fields
AudioFormat audioFormat = waveFileFormat.getFormat();
int headerLength = waveFileFormat.getHeaderSize();
int riffMagic = WaveFileFormat.RIFF_MAGIC;
int waveMagic = WaveFileFormat.WAVE_MAGIC;
int fmtMagic = WaveFileFormat.FMT_MAGIC;
int fmtLength = WaveFileFormat.getFmtChunkSize(waveFileFormat.getWaveType());
short wav_type = (short) waveFileFormat.getWaveType();
short channels = (short) audioFormat.getChannels();
short sampleSizeInBits = (short) audioFormat.getSampleSizeInBits();
int sampleRate = (int) audioFormat.getSampleRate();
int frameSizeInBytes = audioFormat.getFrameSize();
int frameRate = (int) audioFormat.getFrameRate();
int avgBytesPerSec = channels * sampleSizeInBits * sampleRate / 8;
short blockAlign = (short) ((sampleSizeInBits / 8) * channels);
int dataMagic = WaveFileFormat.DATA_MAGIC;
int dataLength = waveFileFormat.getFrameLength() * frameSizeInBytes;
int length = waveFileFormat.getByteLength();
int riffLength = dataLength + headerLength - 8;
byte header[] = null;
ByteArrayInputStream headerStream = null;
ByteArrayOutputStream baos = null;
DataOutputStream dos = null;
SequenceInputStream waveStream = null;
AudioFormat audioStreamFormat = null;
AudioFormat.Encoding encoding = null;
InputStream codedAudioStream = audioStream;
// if audioStream is an AudioInputStream and we need to convert, do it here...
if (audioStream instanceof AudioInputStream) {
audioStreamFormat = ((AudioInputStream) audioStream).getFormat();
encoding = audioStreamFormat.getEncoding();
if (AudioFormat.Encoding.PCM_SIGNED.equals(encoding)) {
if (sampleSizeInBits == 8) {
wav_type = WaveFileFormat.WAVE_FORMAT_PCM;
// plug in the transcoder to convert from PCM_SIGNED to PCM_UNSIGNED
codedAudioStream =
AudioSystem.getAudioInputStream(
new AudioFormat(
AudioFormat.Encoding.PCM_UNSIGNED,
audioStreamFormat.getSampleRate(),
audioStreamFormat.getSampleSizeInBits(),
audioStreamFormat.getChannels(),
audioStreamFormat.getFrameSize(),
audioStreamFormat.getFrameRate(),
false),
(AudioInputStream) audioStream);
}
}
if ((AudioFormat.Encoding.PCM_SIGNED.equals(encoding) && audioStreamFormat.isBigEndian())
|| (AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)
&& !audioStreamFormat.isBigEndian())
|| (AudioFormat.Encoding.PCM_UNSIGNED.equals(encoding)
&& audioStreamFormat.isBigEndian())) {
if (sampleSizeInBits != 8) {
wav_type = WaveFileFormat.WAVE_FORMAT_PCM;
// plug in the transcoder to convert to PCM_SIGNED_LITTLE_ENDIAN
codedAudioStream =
AudioSystem.getAudioInputStream(
new AudioFormat(
AudioFormat.Encoding.PCM_SIGNED,
audioStreamFormat.getSampleRate(),
audioStreamFormat.getSampleSizeInBits(),
audioStreamFormat.getChannels(),
audioStreamFormat.getFrameSize(),
audioStreamFormat.getFrameRate(),
false),
(AudioInputStream) audioStream);
}
}
}
// Now push the header into a stream, concat, and return the new SequenceInputStream
baos = new ByteArrayOutputStream();
dos = new DataOutputStream(baos);
// we write in littleendian...
dos.writeInt(riffMagic);
dos.writeInt(big2little(riffLength));
dos.writeInt(waveMagic);
dos.writeInt(fmtMagic);
dos.writeInt(big2little(fmtLength));
dos.writeShort(big2littleShort(wav_type));
dos.writeShort(big2littleShort(channels));
dos.writeInt(big2little(sampleRate));
dos.writeInt(big2little(avgBytesPerSec));
dos.writeShort(big2littleShort(blockAlign));
dos.writeShort(big2littleShort(sampleSizeInBits));
// $$fb 2002-04-16: Fix for 4636355: RIFF audio headers could be _more_ spec compliant
if (wav_type != WaveFileFormat.WAVE_FORMAT_PCM) {
// add length 0 for "codec specific data length"
dos.writeShort(0);
}
dos.writeInt(dataMagic);
dos.writeInt(big2little(dataLength));
dos.close();
header = baos.toByteArray();
headerStream = new ByteArrayInputStream(header);
waveStream = new SequenceInputStream(headerStream, new NoCloseInputStream(codedAudioStream));
return waveStream;
}
/**
* 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;
}
public boolean convertToTxt(short SIZE) {
// WAV FILE ATTRIBUTE
AudioInputStream audioinput;
AudioFormat audioformat;
long length_in_frames;
float frameRate;
int frameSize;
int channels;
float sampleRate;
int sampleSize;
boolean big_endian;
System.out.println(wav_file_path);
File wavfile = new File(wav_file_path);
BufferedInputStream bufread;
BufferedWriter wrL, wrR; // left channel file and right channel file;
int max_mag_in_recording =
0; // This is the place holder for the maximum magnitude in the WAV file (Used for
// normalizing)
byte[] buffer = new byte[SIZE];
ArrayList write_list = new ArrayList();
Integer[] write_buffer;
int sampleCount = 0;
boolean write_buffer_full = false;
int num_bytes_read = 0;
int valuecount = 0;
try {
audioinput = AudioSystem.getAudioInputStream(wavfile);
bufread = new BufferedInputStream(audioinput);
String[] tempstr = wav_file_path.split(".wav");
left_channel_file = tempstr[0] + "LEFT.txt";
right_channel_file = tempstr[0] + "RIGHT.txt";
wrL = new BufferedWriter(new FileWriter(left_channel_file));
wrR = new BufferedWriter(new FileWriter(right_channel_file));
audioformat = audioinput.getFormat();
length_in_frames = audioinput.getFrameLength();
channels = audioformat.getChannels();
frameRate = audioformat.getFrameRate();
frameSize = audioformat.getFrameSize();
sampleRate = audioformat.getSampleRate();
sampling_rate = (int) sampleRate;
sampleSize = audioformat.getSampleSizeInBits();
big_endian = audioformat.isBigEndian();
bufread = new BufferedInputStream(audioinput, SIZE);
// THIS BYTE ARRAY WILL STORE THE FRAME
short sampleSizeinBytes = (short) (sampleSize / 8);
int[] frame = new int[sampleSizeinBytes];
int frame_low = 0;
int frame_high = sampleSizeinBytes - 1;
/*
frame[highest] + frame[highest-1] + .... + frame[0]
*/
int tmp;
int tempint = 0;
short buffer_read_count = 0;
boolean left_overs = false;
ArrayList left_over_array = new ArrayList();
short requires_more = 0;
byte[] left_over_byte_array = new byte[SIZE];
boolean number_negative = false;
boolean write_to_file = false;
int temp_left = 0;
int temp_byte_to_int = 0;
boolean right_channel = false;
int negative_number_shift = 0;
for (int i = sampleSizeinBytes; i < 4; i++) {
negative_number_shift = negative_number_shift | 0xFF << (8 * i);
}
while ((num_bytes_read = bufread.read(buffer)) != -1) {
buffer_read_count = -1;
if (left_overs) {
requires_more = (short) (sampleSizeinBytes - left_over_array.size());
if (num_bytes_read >= requires_more) {
for (short k = 1; k <= requires_more; k++) {
buffer_read_count = (short) (buffer_read_count + 1);
left_over_array.add(buffer[buffer_read_count]);
}
}
left_overs = false;
Byte[] t = new Byte[left_over_array.size()];
left_over_array.toArray(t);
temp_byte_to_int = 0;
tempint = 0;
temp_left = 0;
for (int i = 0; i < left_over_array.size(); i++) {
if (!((t[i]) >= 0 && (t[i] <= 127))) {
if (i == left_over_array.size() - 1) number_negative = true;
temp_byte_to_int = 256 + t[i];
} else temp_byte_to_int = t[i];
temp_left = temp_left + (temp_byte_to_int << (8 * (i)));
}
if (number_negative) {
tempint = (negative_number_shift) | temp_left;
number_negative = false;
} else tempint = temp_left;
write_list.add(tempint);
sampleCount += 1;
tempint = temp_left = temp_byte_to_int = 0;
left_over_array.clear();
}
while ((buffer_read_count) < num_bytes_read - 1) {
if (((num_bytes_read - 1) - (buffer_read_count)) >= sampleSizeinBytes) {
for (short i = 1; i <= sampleSizeinBytes; i++) {
buffer_read_count = (short) (buffer_read_count + 1);
frame[i - 1] = buffer[buffer_read_count];
}
tempint = temp_left = temp_byte_to_int = 0;
for (int m = 0; m < frame.length; m++) {
if (!((frame[m]) >= 0 && (frame[m] <= 127))) {
if (m == frame.length - 1) number_negative = true;
temp_byte_to_int = 256 + frame[m];
} else temp_byte_to_int = frame[m];
temp_left = temp_left + (temp_byte_to_int << (8 * (m)));
}
if (number_negative) {
tempint = (negative_number_shift) | temp_left;
number_negative = false;
} else tempint = temp_left;
sampleCount += 1;
write_list.add(tempint);
tempint = temp_left = temp_byte_to_int = 0;
} else {
// save the left over bytes which are lesser in number than frame size in a tempbuffer
// and turn the flag on. If flag==true then process that first and then process other.
left_over_array.clear();
short left_over_array_count = (short) (num_bytes_read - 1 - buffer_read_count);
for (short l = 1; l <= left_over_array_count; l++) {
buffer_read_count = (short) (buffer_read_count + 1);
left_over_array.add(buffer[buffer_read_count]);
}
left_overs = true;
}
}
write_to_file = true;
if (write_to_file) {
// store all the number in the write_buffer to the file
write_buffer = new Integer[write_list.size()];
write_list.toArray(write_buffer);
for (int w = 0; w < write_list.size(); w++) {
if (!right_channel) {
int storeL = write_buffer[w].intValue();
valuecount = valuecount + 1;
if ((storeL > 0) && (maxValueL < storeL)) {
maxValueL = storeL;
sampleMaxL = valuecount;
}
if ((storeL < 0) && (minValueL > storeL)) {
sampleMinL = valuecount;
minValueL = storeL;
}
wrL.write(String.valueOf(storeL));
wrL.newLine();
right_channel = true;
} else {
valuecount = valuecount + 1;
int storeR = write_buffer[w].intValue();
if ((storeR > 0) && (maxValueR < storeR)) {
sampleMaxR = valuecount;
maxValueR = storeR;
}
if ((storeR < 0) && (minValueR > storeR)) {
sampleMinR = valuecount;
minValueR = storeR;
}
wrR.write(String.valueOf(storeR));
wrR.newLine();
right_channel = false;
}
}
write_list.clear();
}
}
wrR.close();
wrL.close();
bufread.close();
System.out.println(sampleMaxL + "\n" + sampleMaxR + "\n" + sampleMinL + "\n" + sampleMinR);
} catch (IOException e) {
System.err.println(e);
} catch (UnsupportedAudioFileException f) {
System.err.println(f);
}
return true;
}