@Override
protected void loadUncompressedRaster(
final RAWImageInputStream iis, final WritableRaster raster, final RAWImageReaderSupport ir)
throws IOException {
final DataBufferUShort dataBuffer = (DataBufferUShort) raster.getDataBuffer();
final short[] data = dataBuffer.getData();
final int width = raster.getWidth();
final int height = raster.getHeight();
final int pixelStride = 1;
final int scanStride = width * pixelStride;
setBitsPerSample(12);
selectBitReader(iis, raster, 12);
//
// We can rely on the fact that the array has been zeroed by the JVM, so we just set nonzero
// samples.
//
for (int y = 0; y < height; y++) {
final int row = getRow(y, height);
int i = row * scanStride;
for (int x = 0; x < width; x++) {
int sample = (int) iis.readBits(12);
data[i] = (short) sample;
endOfColumn(x, iis);
i += pixelStride;
}
ir.processImageProgress((100.0f * y) / height);
endOfRow(y, iis);
}
}
/**
* *****************************************************************************************************************
*
* <p>****************************************************************************************************************
*/
private boolean canDecodeInput(ImageInputStream source) throws IOException {
RAWImageInputStream iis = new RAWImageInputStreamImpl(source);
iis
.setDontCloseDelegate(); // otherwise the garbage collector will close it together with the
// original source!!
try {
iis.mark();
return canDecodeInput(iis);
} catch (Exception e) {
return false;
} finally {
iis.setBaseOffset(0);
iis.reset();
}
}
/**
* *****************************************************************************************************************
*
* @param iis
* @return
* @throws IOException
* <p>*****************************************************************************
*/
protected boolean canDecodeInput(@Nonnull final RAWImageInputStream iis) throws IOException {
iis.seek(0);
NEFHeaderProcessor headerProcessor = new NEFHeaderProcessor();
headerProcessor.process(iis);
long ifdOffset = TIFFImageReaderSupport.processHeader(iis, headerProcessor);
if (ifdOffset
== 20) // TODO: bad fix for NDF files, must test for NDF instead - headerProcessor.isNDF()
{
ifdOffset -= NEFHeaderProcessor.NDF_OFFSET;
iis.setBaseOffset(
NEFHeaderProcessor
.NDF_OFFSET); // TODO: move this behaviour as generic, with hproc.getBaseOffset()
}
IFD primaryIFD = new IFD();
primaryIFD.load(iis, ifdOffset);
if (primaryIFD.isDNGVersionAvailable()) {
logger.finest(">>>> FAILING, isDNGVersionAvailable returning true");
return false;
}
String make = primaryIFD.getMake();
String model = primaryIFD.getModel();
logger.finest("Make: %s, Model: %s", make, model);
//
// Beware that TIFF files out of Nikon scanners are tagged as Nikon.
// Check the model name too.
//
if ((make == null)
|| !make.toUpperCase().startsWith("NIKON")
|| (model == null)
|| (!model.toUpperCase().startsWith("NIKON D")
&& !supportedModels.contains(model.toUpperCase()))) {
logger.finest(">>>> FAILING, supportedModels: %s", supportedModels);
return false;
}
return true;
}
public int decode(
final @Nonnegative int bitCount,
final boolean useTable,
final @Nonnull RAWImageInputStream iis,
final boolean zeroAfterFF)
throws IOException {
if ((bitCount == 0) || (availableBitCount < 0)) {
return 0;
}
int value;
// TODO: RAWImageInputStream supports zeroAfterFF - use it and simplify this loop
// while (!reset && (availableBitCount < bitCount) && ((value = iis.read() & 0xff) != 0xff) &&
// // more correct, but breaks
while (!reset
&& (availableBitCount < bitCount)
&& ((value = iis.read() & 0xff) != -1)
&& !(reset = zeroAfterFF && (value == 0xff) && (iis.read() != 0))) {
bitBuffer = (bitBuffer << 8) | value; // (uchar)c
availableBitCount += 8;
}
value = (bitBuffer << (32 - availableBitCount)) >>> (32 - bitCount);
if (useTable) {
availableBitCount -= bitCountTable[value];
value = byteTable[value] & 0xff; // (uchar)...
} else {
availableBitCount -= bitCount;
}
assert (availableBitCount >= 0);
// logger.finest("getbithuff: returning c: %d, bitbuf: %x, vbits: %d", c, bitbuf, vbits);
return value;
}