private void switchBuffers(int offset, float[] audioArray, SyncBuffer oldBuffer) {
int toBePadded = offset;
FloatBuffer oldFloatBuffer = oldBuffer.asFloatBuffer();
// 1) use the remaining space in the current buffer
// ...pad the current buffer as much as fits.
while ((toBePadded > 0) && (oldFloatBuffer.hasRemaining())) {
oldFloatBuffer.put(0F);
toBePadded--;
samplesProcessed++;
}
// ...put as much as fits from the audioArray
int audioArrayWrittenToOld = 0;
if (oldFloatBuffer.hasRemaining() && toBePadded == 0) {
audioArrayWrittenToOld = oldFloatBuffer.remaining();
oldFloatBuffer.put(audioArray, 0, audioArrayWrittenToOld);
samplesProcessed += audioArrayWrittenToOld;
}
// 2) put the rest in a new buffer
if (!startBufferDone) {
// setup the first file buffer
bussyBufferProvider = new AlwaysStreamedBuffer(new SyncBuffer(requestedFileBufferSizeFloat));
} else {
if (!firstFileBufferDone) {
// setup the second file buffer
bussyBufferProvider =
new AlwaysStreamedBuffer(new SyncBuffer(requestedFileBufferSizeFloat));
}
}
if (bussyBufferProvider == null) {
logger.severe("Next buffer is null!!");
return;
}
if (!bussyBufferProvider.isDone()) {
logger.warning("Next buffer not ready.");
overflowCount++;
return;
}
SyncBuffer newBuffer;
FileChannel channel;
try {
FileWriteTaskResult result = bussyBufferProvider.get();
newBuffer = result.getbuffer();
channel = result.getChannel();
} catch (InterruptedException | ExecutionException ex) {
logger.log(Level.SEVERE, null, ex);
return;
}
FloatBuffer newFloatBuffer = newBuffer.asFloatBuffer();
//
int remainingInNewBuffer = newFloatBuffer.remaining();
int toBeWrittenToNew = toBePadded + audioArray.length - audioArrayWrittenToOld;
if (toBeWrittenToNew > remainingInNewBuffer) {
logger.severe("File buffer too small for this offset.");
} else {
for (int i = 0; i < toBePadded; i++) {
newFloatBuffer.put(0F);
samplesProcessed++;
}
int restAudioArray = audioArray.length - audioArrayWrittenToOld;
newFloatBuffer.put(audioArray, audioArrayWrittenToOld, restAudioArray);
samplesProcessed += restAudioArray;
}
if (startBufferDone) {
FileWriteTask fileWriteTask = new FileWriteTask(outputFile, channel, oldBuffer);
currentBufferProvider = bussyBufferProvider;
bussyBufferProvider = executor.submit(fileWriteTask);
firstFileBufferDone = true;
} else {
// we just have processed the first buffer:
currentBufferProvider = bussyBufferProvider;
bussyBufferProvider = null;
startBufferDone = true;
}
}
@Override
public FileChannel call() throws FileNotFoundException, IOException {
FileWriteTask fileWriteTask = new FileWriteTask(file, channel, buffer);
FileWriteTaskResult fileWriteResult = fileWriteTask.call();
return reopenForInput(fileWriteResult.getChannel());
}
