lzwDecoder = new TIFFLZWDecoder(w, predictor, samplePerPixel);
}
int rowsLeft = h;
ByteArrayOutputStream stream = null;
ByteArrayOutputStream mstream = null;
DeflaterOutputStream zip = null;
DeflaterOutputStream mzip = null;
if (extraSamples > 0) {
mstream = new ByteArrayOutputStream();
mzip = new DeflaterOutputStream(mstream);
}
CCITTG4Encoder g4 = null;
if (bitsPerSample == 1 && samplePerPixel == 1 && photometric != TIFFConstants.PHOTOMETRIC_PALETTE) {
g4 = new CCITTG4Encoder(w);
}
else {
stream = new ByteArrayOutputStream();
if (compression != TIFFConstants.COMPRESSION_OJPEG && compression != TIFFConstants.COMPRESSION_JPEG)
zip = new DeflaterOutputStream(stream);
}
if (compression == TIFFConstants.COMPRESSION_OJPEG) {
// Assume that the TIFFTAG_JPEGIFBYTECOUNT tag is optional, since it's obsolete and
// is often missing
if ((!dir.isTagPresent(TIFFConstants.TIFFTAG_JPEGIFOFFSET))) {
throw new IOException(MessageLocalization.getComposedMessage("missing.tag.s.for.ojpeg.compression"));
}
int jpegOffset = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_JPEGIFOFFSET);
int jpegLength = (int)s.length() - jpegOffset;
if (dir.isTagPresent(TIFFConstants.TIFFTAG_JPEGIFBYTECOUNT)) {
jpegLength = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_JPEGIFBYTECOUNT) +
(int)size[0];
}
byte[] jpeg = new byte[Math.min(jpegLength, (int)s.length() - jpegOffset)];
int posFilePointer = (int)s.getFilePointer();
posFilePointer += jpegOffset;
s.seek(posFilePointer);
s.readFully(jpeg);
img = new Jpeg(jpeg);
}
else if (compression == TIFFConstants.COMPRESSION_JPEG) {
if (size.length > 1)
throw new IOException(MessageLocalization.getComposedMessage("compression.jpeg.is.only.supported.with.a.single.strip.this.image.has.1.strips", size.length));
byte[] jpeg = new byte[(int)size[0]];
s.seek(offset[0]);
s.readFully(jpeg);
// if quantization and/or Huffman tables are stored separately in the tiff,
// we need to add them to the jpeg data
TIFFField jpegtables = dir.getField(TIFFConstants.TIFFTAG_JPEGTABLES);
if (jpegtables != null) {
byte[] temp = jpegtables.getAsBytes();
int tableoffset = 0;
int tablelength = temp.length;
// remove FFD8 from start
if (temp[0] == (byte) 0xFF && temp[1] == (byte) 0xD8) {
tableoffset = 2;
tablelength -= 2;
}
// remove FFD9 from end
if (temp[temp.length-2] == (byte) 0xFF && temp[temp.length-1] == (byte) 0xD9)
tablelength -= 2;
byte[] tables = new byte[tablelength];
System.arraycopy(temp, tableoffset, tables, 0, tablelength);
// TODO insert after JFIF header, instead of at the start
byte[] jpegwithtables = new byte[jpeg.length + tables.length];
System.arraycopy(jpeg, 0, jpegwithtables, 0, 2);
System.arraycopy(tables, 0, jpegwithtables, 2, tables.length);
System.arraycopy(jpeg, 2, jpegwithtables, tables.length+2, jpeg.length-2);
jpeg = jpegwithtables;
}
img = new Jpeg(jpeg);
}
else {
for (int k = 0; k < offset.length; ++k) {
byte im[] = new byte[(int)size[k]];
s.seek(offset[k]);
s.readFully(im);
int height = Math.min(rowsStrip, rowsLeft);
byte outBuf[] = null;
if (compression != TIFFConstants.COMPRESSION_NONE)
outBuf = new byte[(w * bitsPerSample * samplePerPixel + 7) / 8 * height];
if (reverse)
TIFFFaxDecoder.reverseBits(im);
switch (compression) {
case TIFFConstants.COMPRESSION_DEFLATE:
case TIFFConstants.COMPRESSION_ADOBE_DEFLATE:
inflate(im, outBuf);
applyPredictor(outBuf, predictor, w, height, samplePerPixel);
break;
case TIFFConstants.COMPRESSION_NONE:
outBuf = im;
break;
case TIFFConstants.COMPRESSION_PACKBITS:
decodePackbits(im, outBuf);
break;
case TIFFConstants.COMPRESSION_LZW:
lzwDecoder.decode(im, outBuf, height);
break;
}
if (bitsPerSample == 1 && samplePerPixel == 1 && photometric != TIFFConstants.PHOTOMETRIC_PALETTE) {
g4.fax4Encode(outBuf, height);
}
else {
if (extraSamples > 0)
ProcessExtraSamples(zip, mzip, outBuf, samplePerPixel, bitsPerSample, w, height);
else
zip.write(outBuf);
}
rowsLeft -= rowsStrip;
}
if (bitsPerSample == 1 && samplePerPixel == 1 && photometric != TIFFConstants.PHOTOMETRIC_PALETTE) {
img = Image.getInstance(w, h, false, Image.CCITTG4,
photometric == TIFFConstants.PHOTOMETRIC_MINISBLACK ? Image.CCITT_BLACKIS1 : 0, g4.close());
}
else {
zip.close();
img = new ImgRaw(w, h, samplePerPixel - extraSamples, bitsPerSample, stream.toByteArray());
img.setDeflated(true);
}
}
img.setDpi(dpiX, dpiY);
if (compression != TIFFConstants.COMPRESSION_OJPEG && compression != TIFFConstants.COMPRESSION_JPEG) {
if (dir.isTagPresent(TIFFConstants.TIFFTAG_ICCPROFILE)) {
try {
TIFFField fd = dir.getField(TIFFConstants.TIFFTAG_ICCPROFILE);
ICC_Profile icc_prof = ICC_Profile.getInstance(fd.getAsBytes());
if (samplePerPixel - extraSamples == icc_prof.getNumComponents())
img.tagICC(icc_prof);
}
catch (RuntimeException e) {
//empty
}
}
if (dir.isTagPresent(TIFFConstants.TIFFTAG_COLORMAP)) {
TIFFField fd = dir.getField(TIFFConstants.TIFFTAG_COLORMAP);
char rgb[] = fd.getAsChars();
byte palette[] = new byte[rgb.length];
int gColor = rgb.length / 3;
int bColor = gColor * 2;
for (int k = 0; k < gColor; ++k) {
palette[k * 3] = (byte)(rgb[k] >>> 8);
palette[k * 3 + 1] = (byte)(rgb[k + gColor] >>> 8);
palette[k * 3 + 2] = (byte)(rgb[k + bColor] >>> 8);
}
// Colormap components are supposed to go from 0 to 655535 but,
// as usually, some tiff producers just put values from 0 to 255.
// Let's check for these broken tiffs.
boolean colormapBroken = true;
for (int k = 0; k < palette.length; ++k) {
if (palette[k] != 0) {
colormapBroken = false;
break;
}
}
if (colormapBroken) {
for (int k = 0; k < gColor; ++k) {
palette[k * 3] = (byte)rgb[k];
palette[k * 3 + 1] = (byte)rgb[k + gColor];
palette[k * 3 + 2] = (byte)rgb[k + bColor];
}
}
PdfArray indexed = new PdfArray();
indexed.add(PdfName.INDEXED);
indexed.add(PdfName.DEVICERGB);
indexed.add(new PdfNumber(gColor - 1));
indexed.add(new PdfString(palette));
PdfDictionary additional = new PdfDictionary();
additional.put(PdfName.COLORSPACE, indexed);
img.setAdditional(additional);
}
img.setOriginalType(Image.ORIGINAL_TIFF);
}
if (photometric == TIFFConstants.PHOTOMETRIC_MINISWHITE)
img.setInverted(true);
if (rotation != 0)
img.setInitialRotation(rotation);
if (extraSamples > 0) {
mzip.close();
Image mimg = Image.getInstance(w, h, 1, bitsPerSample, mstream.toByteArray());
mimg.makeMask();
mimg.setDeflated(true);
img.setImageMask(mimg);
}