// TODO: Candidate util method
private static long skipToEOF(final ImageInputStream stream) throws IOException {
long length = stream.length();
if (length > 0) {
// Known length, skip there and we're done.
stream.seek(length);
} else {
// Otherwise, seek to EOF the hard way.
// First, store stream position...
long pos = stream.getStreamPosition();
// ...skip 1k blocks until we're passed EOF...
while (stream.skipBytes(1024l) > 0) {
if (stream.read() == -1) {
break;
}
pos = stream.getStreamPosition();
}
// ...go back to last known pos...
stream.seek(pos);
// ...finally seek until EOF one byte at a time. Done.
while (stream.read() != -1) {}
}
return stream.getStreamPosition();
}
private int locateImage(int imageIndex) throws IIOException {
readHeader();
try {
// Find closest known index
int index = Math.min(imageIndex, imageStartPosition.size() - 1);
// Seek to that position
Long l = (Long) imageStartPosition.get(index);
stream.seek(l.longValue());
// Skip IFDs until at desired index or last image found
while (index < imageIndex) {
int count = stream.readUnsignedShort();
stream.skipBytes(12 * count);
long offset = stream.readUnsignedInt();
if (offset == 0) {
return index;
}
imageStartPosition.add(new Long(offset));
stream.seek(offset);
++index;
}
} catch (IOException e) {
throw new IIOException("Couldn't seek!", e);
}
if (currIndex != imageIndex) {
imageMetadata = null;
}
currIndex = imageIndex;
return imageIndex;
}
private void parseProperties() throws IOException {
String line;
stream.seek(0);
propertiesByteSize = 0;
long posInStream = 0l;
while ((line = stream.readLine()) != null) {
if (!line.startsWith("#")) {
stream.seek(posInStream);
break;
}
propertiesByteSize += (stream.getStreamPosition() - posInStream);
posInStream = stream.getStreamPosition();
line = line.substring(1);
int pos = line.indexOf('=');
if (pos == -1) {
throw new IOException("Missing '=' in '" + line + "'");
}
String name = line.substring(0, pos).trim();
if (name.isEmpty()) {
throw new IOException("Empty property name in '" + line + "'");
}
String value = line.substring(pos + 1).trim();
try {
if (contains(Constants.CRS_IDENTIFIERS, name) && crs != null) {
crs = CRS.parseWKT(value);
}
} catch (FactoryException e) {
throw new IOException(e);
}
properties.put(name, value);
}
propertiesParsed = true;
}
private void skipToLine(long lineOffset) throws IOException {
if (bytePositionForOffset.containsKey(lineOffset)) {
stream.seek(bytePositionForOffset.get(lineOffset));
return;
}
Map.Entry<Long, Long> entry = getBestOffset(lineOffset);
stream.seek(entry.getValue());
long linesToSkip = lineOffset - entry.getKey();
for (int i = 0; i < linesToSkip; i++) {
stream.readLine();
}
bytePositionForOffset.put(lineOffset, stream.getStreamPosition());
}
PSDResource(final short resourceId, final ImageInputStream input) throws IOException {
id = resourceId;
name = readPascalString(input);
// Skip pad
int nameSize = name.length() + 1;
if (nameSize % 2 != 0) {
input.readByte();
}
size = input.readUnsignedInt();
long startPos = input.getStreamPosition();
readData(new SubImageInputStream(input, size));
// NOTE: This should never happen, however it's safer to keep it here for future compatibility
if (input.getStreamPosition() != startPos + size) {
input.seek(startPos + size);
}
// Data is even-padded (word aligned)
if (size % 2 != 0) {
input.read();
}
}
@Override
public Raster readRaster(int frameIndex, ImageReadParam param) throws IOException {
readMetadata();
checkIndex(frameIndex);
if (decompressor != null) {
decompressor.setInput(iisOfFrame(frameIndex));
if (LOG.isDebugEnabled()) LOG.debug("Start decompressing frame #" + (frameIndex + 1));
Raster wr =
pmi.decompress() == pmi && decompressor.canReadRaster()
? decompressor.readRaster(0, decompressParam(param))
: decompressor.read(0, decompressParam(param)).getRaster();
if (LOG.isDebugEnabled()) LOG.debug("Finished decompressing frame #" + (frameIndex + 1));
return wr;
}
iis.seek(pixeldata.offset + frameIndex * frameLength);
WritableRaster wr = Raster.createWritableRaster(createSampleModel(dataType, banded), null);
DataBuffer buf = wr.getDataBuffer();
if (buf instanceof DataBufferByte) {
byte[][] data = ((DataBufferByte) buf).getBankData();
for (byte[] bs : data) iis.readFully(bs);
if (pixeldata.bigEndian && pixeldataVR.vr == VR.OW) ByteUtils.swapShorts(data);
} else {
short[] data = ((DataBufferUShort) buf).getData();
iis.readFully(data, 0, data.length);
}
return wr;
}
@Override
public int getRecordCount() throws IOException {
int count = 1;
byte[] buffer = new byte[100 * 1024];
int readChars;
long currentPosInStream = stream.getStreamPosition();
stream.seek(0);
while ((readChars = stream.read(buffer)) != -1) {
for (int i = 0; i < readChars - 1; ++i) {
if (buffer[i] == '\n') {
++count;
}
}
}
count -= properties.size();
final int headerLineCount = 1;
count -= headerLineCount;
stream.seek(currentPosInStream);
return count;
}
BufferedImage getThumbnail(ImageInputStream iis, JPEGImageReader reader) throws IOException {
iis.mark();
iis.seek(streamPos);
JPEGImageReader thumbReader = new JPEGImageReader(null);
thumbReader.setInput(iis);
thumbReader.addIIOReadProgressListener(new ThumbnailReadListener(reader));
BufferedImage ret = thumbReader.read(0, null);
thumbReader.dispose();
iis.reset();
return ret;
}
private void initBoolDecoder() throws IOException {
value = 0; /* value = first 16 input bits */
data.seek(offset);
value = data.readUnsignedByte() << 8;
// value = (data[offset]) << 8;
offset++;
range = 255; /* initial range is full */
bit_count = 0; /* have not yet shifted out any bits */
}
BufferedImage getThumbnail(ImageInputStream iis, JPEGImageReader reader) throws IOException {
iis.mark();
iis.seek(streamPos);
DataBufferByte buffer = new DataBufferByte(getLength());
readByteBuffer(iis, buffer.getData(), reader, 1.0F, 0.0F);
iis.reset();
WritableRaster raster =
Raster.createInterleavedRaster(
buffer, thumbWidth, thumbHeight, thumbWidth * 3, 3, new int[] {0, 1, 2}, null);
ColorModel cm =
new ComponentColorModel(
JPEG.JCS.sRGB, false, false, ColorModel.OPAQUE, DataBuffer.TYPE_BYTE);
return new BufferedImage(cm, raster, false, null);
}
BufferedImage getThumbnail(ImageInputStream iis, JPEGImageReader reader) throws IOException {
iis.mark();
iis.seek(streamPos);
// read the palette
byte[] palette = new byte[PALETTE_SIZE];
float palettePart = ((float) PALETTE_SIZE) / getLength();
readByteBuffer(iis, palette, reader, palettePart, 0.0F);
DataBufferByte buffer = new DataBufferByte(thumbWidth * thumbHeight);
readByteBuffer(iis, buffer.getData(), reader, 1.0F - palettePart, palettePart);
iis.read();
iis.reset();
IndexColorModel cm = new IndexColorModel(8, 256, palette, 0, false);
SampleModel sm = cm.createCompatibleSampleModel(thumbWidth, thumbHeight);
WritableRaster raster = Raster.createWritableRaster(sm, buffer, null);
return new BufferedImage(cm, raster, false, null);
}
public MarkerSegment readSegment() throws IOException {
if (!init) {
init = true;
stream.seek(position);
}
final int code = stream.readShort() & 0x0000ffff;
// stream.seek(position + length - 2);
final MarkerType markerType = MarkerType.get(code);
if (markerType != null) {
final MarkerSegment segment = markerType.createSegment();
segment.readFrom(stream);
return segment;
} else {
final MarkerSegment segment = new IgnoredSegment(code);
segment.readFrom(stream);
return segment;
}
}
// Do not seek to the beginning of the stream so as to allow users to
// point us at an IFD within some other file format
private void readHeader() throws IIOException {
if (gotHeader) {
return;
}
if (stream == null) {
throw new IllegalStateException("Input not set!");
}
// Create an object to store the stream metadata
this.streamMetadata = new TIFFStreamMetadata();
try {
int byteOrder = stream.readUnsignedShort();
if (byteOrder == 0x4d4d) {
streamMetadata.byteOrder = ByteOrder.BIG_ENDIAN;
stream.setByteOrder(ByteOrder.BIG_ENDIAN);
} else if (byteOrder == 0x4949) {
streamMetadata.byteOrder = ByteOrder.LITTLE_ENDIAN;
stream.setByteOrder(ByteOrder.LITTLE_ENDIAN);
} else {
processWarningOccurred("Bad byte order in header, assuming little-endian");
streamMetadata.byteOrder = ByteOrder.LITTLE_ENDIAN;
stream.setByteOrder(ByteOrder.LITTLE_ENDIAN);
}
int magic = stream.readUnsignedShort();
if (magic != 42) {
processWarningOccurred("Bad magic number in header, continuing");
}
// Seek to start of first IFD
long offset = stream.readUnsignedInt();
imageStartPosition.add(new Long(offset));
stream.seek(offset);
} catch (IOException e) {
throw new IIOException("I/O error reading header!", e);
}
gotHeader = true;
}
private void parseHeader() throws IOException {
if (!propertiesParsed) {
throw new IllegalStateException("Properties need to be parsed before header.");
}
stream.seek(propertiesByteSize);
String line;
long posInStream = stream.getStreamPosition();
while ((line = stream.readLine()) != null) {
if (line.startsWith("#")) {
propertiesByteSize += (stream.getStreamPosition() - posInStream);
posInStream = stream.getStreamPosition();
continue;
}
headerByteSize += (stream.getStreamPosition() - posInStream);
final String separator =
properties.get("separator") != null
? properties.get("separator")
: Constants.DEFAULT_SEPARATOR;
createFeatureType(line.split(separator));
break;
}
}
private void readHeader() throws IOException {
if (gotHeader) {
iis.seek(128);
return;
}
metadata = new PCXMetadata();
manufacturer = iis.readByte(); // manufacturer
if (manufacturer != MANUFACTURER) throw new IllegalStateException("image is not a PCX file");
metadata.version = iis.readByte(); // version
encoding = iis.readByte(); // encoding
if (encoding != ENCODING)
throw new IllegalStateException("image is not a PCX file, invalid encoding " + encoding);
metadata.bitsPerPixel = iis.readByte();
metadata.xmin = iis.readShort();
metadata.ymin = iis.readShort();
xmax = iis.readShort();
ymax = iis.readShort();
metadata.hdpi = iis.readShort();
metadata.vdpi = iis.readShort();
iis.readFully(smallPalette);
iis.readByte(); // reserved
colorPlanes = iis.readByte();
bytesPerLine = iis.readShort();
paletteType = iis.readShort();
metadata.hsize = iis.readShort();
metadata.vsize = iis.readShort();
iis.skipBytes(54); // skip filler
width = xmax - metadata.xmin + 1;
height = ymax - metadata.ymin + 1;
if (colorPlanes == 1) {
if (paletteType == PALETTE_GRAYSCALE) {
ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
int[] nBits = {8};
colorModel =
new ComponentColorModel(
cs, nBits, false, false, Transparency.OPAQUE, DataBuffer.TYPE_BYTE);
sampleModel =
new ComponentSampleModel(DataBuffer.TYPE_BYTE, width, height, 1, width, new int[] {0});
} else {
if (metadata.bitsPerPixel == 8) {
// read palette from end of file, then reset back to image data
iis.mark();
if (iis.length() == -1) {
// read until eof, and work backwards
while (iis.read() != -1) ;
iis.seek(iis.getStreamPosition() - 256 * 3 - 1);
} else {
iis.seek(iis.length() - 256 * 3 - 1);
}
int palletteMagic = iis.read();
if (palletteMagic != 12)
processWarningOccurred(
"Expected palette magic number 12; instead read "
+ palletteMagic
+ " from this image.");
iis.readFully(largePalette);
iis.reset();
colorModel = new IndexColorModel(metadata.bitsPerPixel, 256, largePalette, 0, false);
sampleModel = colorModel.createCompatibleSampleModel(width, height);
} else {
int msize = metadata.bitsPerPixel == 1 ? 2 : 16;
colorModel = new IndexColorModel(metadata.bitsPerPixel, msize, smallPalette, 0, false);
sampleModel = colorModel.createCompatibleSampleModel(width, height);
}
}
} else {
ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
int[] nBits = {8, 8, 8};
colorModel =
new ComponentColorModel(
cs, nBits, false, false, Transparency.OPAQUE, DataBuffer.TYPE_BYTE);
sampleModel =
new ComponentSampleModel(
DataBuffer.TYPE_BYTE,
width,
height,
1,
width * colorPlanes,
new int[] {0, width, width * 2});
}
originalSampleModel = sampleModel;
originalColorModel = colorModel;
gotHeader = true;
}
public void seek() throws IOException {
data.seek(offset);
}
public void initialize(
ImageInputStream stream, boolean ignoreUnknownFields, final boolean isBTIFF)
throws IOException {
removeTIFFFields();
List tagSetList = getTagSetList();
final long numEntries;
if (isBTIFF) numEntries = stream.readLong();
else numEntries = stream.readUnsignedShort();
for (int i = 0; i < numEntries; i++) {
// Read tag number, value type, and value count.
int tag = stream.readUnsignedShort();
int type = stream.readUnsignedShort();
int count;
if (isBTIFF) {
long count_ = stream.readLong();
count = (int) count_;
if (count != count_)
throw new IllegalArgumentException("unable to use long number of values");
} else count = (int) stream.readUnsignedInt();
// Get the associated TIFFTag.
TIFFTag tiffTag = getTag(tag, tagSetList);
// Ignore unknown fields.
if (ignoreUnknownFields && tiffTag == null) {
// Skip the value/offset so as to leave the stream
// position at the start of the next IFD entry.
if (isBTIFF) stream.skipBytes(8);
else stream.skipBytes(4);
// XXX Warning message ...
// Continue with the next IFD entry.
continue;
}
long nextTagOffset;
if (isBTIFF) {
nextTagOffset = stream.getStreamPosition() + 8;
int sizeOfType = TIFFTag.getSizeOfType(type);
if (count * sizeOfType > 8) {
long value = stream.readLong();
stream.seek(value);
}
} else {
nextTagOffset = stream.getStreamPosition() + 4;
int sizeOfType = TIFFTag.getSizeOfType(type);
if (count * sizeOfType > 4) {
long value = stream.readUnsignedInt();
stream.seek(value);
}
}
if (tag == BaselineTIFFTagSet.TAG_STRIP_BYTE_COUNTS
|| tag == BaselineTIFFTagSet.TAG_TILE_BYTE_COUNTS
|| tag == BaselineTIFFTagSet.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH) {
this.stripOrTileByteCountsPosition = stream.getStreamPosition();
if (LAZY_LOADING) {
type = type == TIFFTag.TIFF_LONG ? TIFFTag.TIFF_LAZY_LONG : TIFFTag.TIFF_LAZY_LONG8;
}
} else if (tag == BaselineTIFFTagSet.TAG_STRIP_OFFSETS
|| tag == BaselineTIFFTagSet.TAG_TILE_OFFSETS
|| tag == BaselineTIFFTagSet.TAG_JPEG_INTERCHANGE_FORMAT) {
this.stripOrTileOffsetsPosition = stream.getStreamPosition();
if (LAZY_LOADING) {
type = type == TIFFTag.TIFF_LONG ? TIFFTag.TIFF_LAZY_LONG : TIFFTag.TIFF_LAZY_LONG8;
}
}
Object obj = null;
try {
switch (type) {
case TIFFTag.TIFF_BYTE:
case TIFFTag.TIFF_SBYTE:
case TIFFTag.TIFF_UNDEFINED:
case TIFFTag.TIFF_ASCII:
byte[] bvalues = new byte[count];
stream.readFully(bvalues, 0, count);
if (type == TIFFTag.TIFF_ASCII) {
// Can be multiple strings
final List<String> v = new ArrayList<String>();
boolean inString = false;
int prevIndex = 0;
for (int index = 0; index <= count; index++) {
if (index < count && bvalues[index] != 0) {
if (!inString) {
// start of string
prevIndex = index;
inString = true;
}
} else { // null or special case at end of string
if (inString) {
// end of string
final String s = new String(bvalues, prevIndex, index - prevIndex);
v.add(s);
inString = false;
}
}
}
count = v.size();
String[] strings;
if (count != 0) {
strings = new String[count];
for (int c = 0; c < count; c++) {
strings[c] = v.get(c);
}
} else {
// This case has been observed when the value of
// 'count' recorded in the field is non-zero but
// the value portion contains all nulls.
count = 1;
strings = new String[] {""};
}
obj = strings;
} else {
obj = bvalues;
}
break;
case TIFFTag.TIFF_SHORT:
char[] cvalues = new char[count];
for (int j = 0; j < count; j++) {
cvalues[j] = (char) (stream.readUnsignedShort());
}
obj = cvalues;
break;
case TIFFTag.TIFF_LONG:
case TIFFTag.TIFF_IFD_POINTER:
long[] lvalues = new long[count];
for (int j = 0; j < count; j++) {
lvalues[j] = stream.readUnsignedInt();
}
obj = lvalues;
break;
case TIFFTag.TIFF_RATIONAL:
long[][] llvalues = new long[count][2];
for (int j = 0; j < count; j++) {
llvalues[j][0] = stream.readUnsignedInt();
llvalues[j][1] = stream.readUnsignedInt();
}
obj = llvalues;
break;
case TIFFTag.TIFF_SSHORT:
short[] svalues = new short[count];
for (int j = 0; j < count; j++) {
svalues[j] = stream.readShort();
}
obj = svalues;
break;
case TIFFTag.TIFF_SLONG:
int[] ivalues = new int[count];
for (int j = 0; j < count; j++) {
ivalues[j] = stream.readInt();
}
obj = ivalues;
break;
case TIFFTag.TIFF_SRATIONAL:
int[][] iivalues = new int[count][2];
for (int j = 0; j < count; j++) {
iivalues[j][0] = stream.readInt();
iivalues[j][1] = stream.readInt();
}
obj = iivalues;
break;
case TIFFTag.TIFF_FLOAT:
float[] fvalues = new float[count];
for (int j = 0; j < count; j++) {
fvalues[j] = stream.readFloat();
}
obj = fvalues;
break;
case TIFFTag.TIFF_DOUBLE:
double[] dvalues = new double[count];
for (int j = 0; j < count; j++) {
dvalues[j] = stream.readDouble();
}
obj = dvalues;
break;
case TIFFTag.TIFF_LONG8:
case TIFFTag.TIFF_SLONG8:
case TIFFTag.TIFF_IFD8:
long[] lBvalues = new long[count];
for (int j = 0; j < count; j++) {
lBvalues[j] = stream.readLong();
}
obj = lBvalues;
break;
case TIFFTag.TIFF_LAZY_LONG8:
case TIFFTag.TIFF_LAZY_LONG:
obj = new TIFFLazyData(stream, type, count);
break;
default:
// XXX Warning
break;
}
} catch (EOFException eofe) {
// The TIFF 6.0 fields have tag numbers less than or equal
// to 532 (ReferenceBlackWhite) or equal to 33432 (Copyright).
// If there is an error reading a baseline tag, then re-throw
// the exception and fail; otherwise continue with the next
// field.
if (BaselineTIFFTagSet.getInstance().getTag(tag) == null) {
throw eofe;
}
}
if (tiffTag == null) {
// XXX Warning: unknown tag
} else if (!tiffTag.isDataTypeOK(type)) {
// XXX Warning: bad data type
} else if (tiffTag.isIFDPointer() && obj != null) {
stream.mark();
stream.seek(((long[]) obj)[0]);
List tagSets = new ArrayList(1);
tagSets.add(tiffTag.getTagSet());
TIFFIFD subIFD = new TIFFIFD(tagSets);
// XXX Use same ignore policy for sub-IFD fields?
subIFD.initialize(stream, ignoreUnknownFields);
obj = subIFD;
stream.reset();
}
if (tiffTag == null) {
tiffTag = new TIFFTag(null, tag, 1 << type, null);
}
// Add the field if its contents have been initialized which
// will not be the case if an EOF was ignored above.
if (obj != null) {
TIFFField f = new TIFFField(tiffTag, type, count, obj);
addTIFFField(f);
}
stream.seek(nextTagOffset);
}
this.lastPosition = stream.getStreamPosition();
}
/** Reads the header. Does nothing if the header has already been loaded. */
private void readHeader() throws IOException {
if (numImages == -1) {
ImageInputStream in = (ImageInputStream) getInput();
in.seek(0);
er = new EXIFReader(in);
er.setFirstImageOnly(false);
er.read();
// Get some information that is easy to obtain through a map
{
HashMap<TIFFTag, TIFFField> m = er.getMetaDataMap();
TIFFField mde;
if ((mde = m.get(MPFTagSet.get(MPFTagSet.TAG_NumberOfImages))) != null) {
numImages = ((Number) mde.getData()).intValue();
} else {
numImages = 1;
}
if ((mde = m.get(EXIFTagSet.PixelXDimension)) != null) {
width = ((Number) mde.getData()).intValue();
}
if ((mde = m.get(EXIFTagSet.PixelYDimension)) != null) {
height = ((Number) mde.getData()).intValue();
}
}
imageOffsets = new long[numImages];
imageLengths = new long[numImages];
if (numImages == 1) {
imageOffsets[0] = 0;
imageLengths[0] = in.length();
}
// Get now at the tough part
int index = 0;
for (Iterator<TIFFNode> e = er.getMetaDataTree().preorderIterator(); e.hasNext(); ) {
TIFFNode n = e.next();
if (n instanceof TIFFDirectory) {
TIFFDirectory dir = (TIFFDirectory) n;
// System.out.println("dir:" + dir.getName());
if (dir.getName() != null && dir.getName().equals("MPEntry")) {
long dirOffset = dir.getFileSegments().get(0).getOffset();
TIFFField offsetField = dir.getField(MPEntryTagSet.IndividualImageDataOffset);
TIFFField lengthField = dir.getField(MPEntryTagSet.IndividualImageSize);
if (offsetField != null && lengthField != null) {
long dataOffset = (Long) offsetField.getData();
imageOffsets[index] = dataOffset == 0 ? 0 : dirOffset + dataOffset;
imageLengths[index] = (Long) lengthField.getData();
index++;
}
}
}
}
// Store metadata for later access
String formatName = "com_sun_media_imageio_plugins_tiff_image_1.0";
imageMetadata = new IIOMetadata[numImages];
for (int i = 0; i < numImages; i++) {
imageMetadata[i] = new DefaultIIOMetadata(formatName, er.getIIOMetadataTree(formatName, i));
}
in.seek(0);
}
}
/**
* Initializes these instance variables from the image metadata:
*
* <pre>
* compression
* width
* height
* samplesPerPixel
* numBands
* colorMap
* photometricInterpretation
* sampleFormat
* bitsPerSample
* extraSamples
* tileOrStripWidth
* tileOrStripHeight
* </pre>
*/
private void initializeFromMetadata() {
TIFFField f;
// Compression
f = imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_COMPRESSION);
if (f == null) {
processWarningOccurred("Compression field is missing; assuming no compression");
compression = BaselineTIFFTagSet.COMPRESSION_NONE;
} else {
compression = f.getAsInt(0);
}
// Whether key dimensional information is absent.
boolean isMissingDimension = false;
// ImageWidth -> width
f = imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_IMAGE_WIDTH);
if (f != null) {
this.width = f.getAsInt(0);
} else {
processWarningOccurred("ImageWidth field is missing.");
isMissingDimension = true;
}
// ImageLength -> height
f = imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_IMAGE_LENGTH);
if (f != null) {
this.height = f.getAsInt(0);
} else {
processWarningOccurred("ImageLength field is missing.");
isMissingDimension = true;
}
// SamplesPerPixel
f = imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_SAMPLES_PER_PIXEL);
if (f != null) {
samplesPerPixel = f.getAsInt(0);
} else {
samplesPerPixel = 1;
isMissingDimension = true;
}
// If any dimension is missing and there is a JPEG stream available
// get the information from it.
int defaultBitDepth = 1;
if (isMissingDimension
&& (f = imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_JPEG_INTERCHANGE_FORMAT))
!= null) {
Iterator iter = ImageIO.getImageReadersByFormatName("JPEG");
if (iter != null && iter.hasNext()) {
ImageReader jreader = (ImageReader) iter.next();
try {
stream.mark();
stream.seek(f.getAsLong(0));
jreader.setInput(stream);
if (imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_IMAGE_WIDTH) == null) {
this.width = jreader.getWidth(0);
}
if (imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_IMAGE_LENGTH) == null) {
this.height = jreader.getHeight(0);
}
ImageTypeSpecifier imageType = jreader.getRawImageType(0);
if (imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_SAMPLES_PER_PIXEL) == null) {
this.samplesPerPixel = imageType.getSampleModel().getNumBands();
}
stream.reset();
defaultBitDepth = imageType.getColorModel().getComponentSize(0);
} catch (IOException e) {
// Ignore it and proceed: an error will occur later.
}
jreader.dispose();
}
}
if (samplesPerPixel < 1) {
processWarningOccurred("Samples per pixel < 1!");
}
// SamplesPerPixel -> numBands
numBands = samplesPerPixel;
// ColorMap
this.colorMap = null;
f = imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_COLOR_MAP);
if (f != null) {
// Grab color map
colorMap = f.getAsChars();
}
// PhotometricInterpretation
f = imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_PHOTOMETRIC_INTERPRETATION);
if (f == null) {
if (compression == BaselineTIFFTagSet.COMPRESSION_CCITT_RLE
|| compression == BaselineTIFFTagSet.COMPRESSION_CCITT_T_4
|| compression == BaselineTIFFTagSet.COMPRESSION_CCITT_T_6) {
processWarningOccurred(
"PhotometricInterpretation field is missing; " + "assuming WhiteIsZero");
photometricInterpretation = BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_WHITE_IS_ZERO;
} else if (this.colorMap != null) {
photometricInterpretation = BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_PALETTE_COLOR;
} else if (samplesPerPixel == 3 || samplesPerPixel == 4) {
photometricInterpretation = BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_RGB;
} else {
processWarningOccurred(
"PhotometricInterpretation field is missing; " + "assuming BlackIsZero");
photometricInterpretation = BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_BLACK_IS_ZERO;
}
} else {
photometricInterpretation = f.getAsInt(0);
}
// SampleFormat
boolean replicateFirst = false;
int first = -1;
f = imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_SAMPLE_FORMAT);
sampleFormat = new int[samplesPerPixel];
replicateFirst = false;
if (f == null) {
replicateFirst = true;
first = BaselineTIFFTagSet.SAMPLE_FORMAT_UNDEFINED;
} else if (f.getCount() != samplesPerPixel) {
replicateFirst = true;
first = f.getAsInt(0);
}
for (int i = 0; i < samplesPerPixel; i++) {
sampleFormat[i] = replicateFirst ? first : f.getAsInt(i);
if (sampleFormat[i] != BaselineTIFFTagSet.SAMPLE_FORMAT_UNSIGNED_INTEGER
&& sampleFormat[i] != BaselineTIFFTagSet.SAMPLE_FORMAT_SIGNED_INTEGER
&& sampleFormat[i] != BaselineTIFFTagSet.SAMPLE_FORMAT_FLOATING_POINT
&& sampleFormat[i] != BaselineTIFFTagSet.SAMPLE_FORMAT_UNDEFINED) {
processWarningOccurred("Illegal value for SAMPLE_FORMAT, assuming SAMPLE_FORMAT_UNDEFINED");
sampleFormat[i] = BaselineTIFFTagSet.SAMPLE_FORMAT_UNDEFINED;
}
}
// BitsPerSample
f = imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_BITS_PER_SAMPLE);
this.bitsPerSample = new int[samplesPerPixel];
replicateFirst = false;
if (f == null) {
replicateFirst = true;
first = defaultBitDepth;
} else if (f.getCount() != samplesPerPixel) {
replicateFirst = true;
first = f.getAsInt(0);
}
for (int i = 0; i < samplesPerPixel; i++) {
// Replicate initial value if not enough values provided
bitsPerSample[i] = replicateFirst ? first : f.getAsInt(i);
if (DEBUG) {
System.out.println("bitsPerSample[" + i + "] = " + bitsPerSample[i]);
}
}
// ExtraSamples
this.extraSamples = null;
f = imageMetadata.getTIFFField(BaselineTIFFTagSet.TAG_EXTRA_SAMPLES);
if (f != null) {
extraSamples = f.getAsInts();
}
// System.out.println("colorMap = " + colorMap);
// if (colorMap != null) {
// for (int i = 0; i < colorMap.length; i++) {
// System.out.println("colorMap[" + i + "] = " + (int)(colorMap[i]));
// }
// }
}
private void readTileData(
File outputFile,
int tileX,
int tileY,
int tileWidth,
int tileHeight,
int jp2TileX,
int jp2TileY,
int jp2TileWidth,
int jp2TileHeight,
short[] tileData,
Rectangle destRect)
throws IOException {
synchronized (this) {
if (!locks.containsKey(outputFile)) {
locks.put(outputFile, new Object());
}
}
final Object lock = locks.get(outputFile);
synchronized (lock) {
Jp2File jp2File = getOpenJ2pFile(outputFile);
int jp2Width = jp2File.width;
int jp2Height = jp2File.height;
if (jp2Width > jp2TileWidth || jp2Height > jp2TileHeight) {
throw new IllegalStateException(
String.format(
"width (=%d) > tileWidth (=%d) || height (=%d) > tileHeight (=%d)",
jp2Width, jp2TileWidth, jp2Height, jp2TileHeight));
}
int jp2X = destRect.x - jp2TileX * jp2TileWidth;
int jp2Y = destRect.y - jp2TileY * jp2TileHeight;
if (jp2X < 0 || jp2Y < 0) {
throw new IllegalStateException(
String.format("jp2X (=%d) < 0 || jp2Y (=%d) < 0", jp2X, jp2Y));
}
final ImageInputStream stream = jp2File.stream;
if (jp2X == 0
&& jp2Width == tileWidth
&& jp2Y == 0
&& jp2Height == tileHeight
&& tileWidth * tileHeight == tileData.length) {
stream.seek(jp2File.dataPos);
stream.readFully(tileData, 0, tileData.length);
} else {
final Rectangle jp2FileRect = new Rectangle(0, 0, jp2Width, jp2Height);
final Rectangle tileRect = new Rectangle(jp2X, jp2Y, tileWidth, tileHeight);
final Rectangle intersection = jp2FileRect.intersection(tileRect);
System.out.printf(
"%s: tile=(%d,%d): jp2FileRect=%s, tileRect=%s, intersection=%s\n",
jp2File.file, tileX, tileY, jp2FileRect, tileRect, intersection);
if (!intersection.isEmpty()) {
long seekPos =
jp2File.dataPos + NUM_SHORT_BYTES * (intersection.y * jp2Width + intersection.x);
int tilePos = 0;
for (int y = 0; y < intersection.height; y++) {
stream.seek(seekPos);
stream.readFully(tileData, tilePos, intersection.width);
seekPos += NUM_SHORT_BYTES * jp2Width;
tilePos += tileWidth;
for (int x = intersection.width; x < tileWidth; x++) {
tileData[y * tileWidth + x] = (short) 0;
}
}
for (int y = intersection.height; y < tileWidth; y++) {
for (int x = 0; x < tileWidth; x++) {
tileData[y * tileWidth + x] = (short) 0;
}
}
} else {
Arrays.fill(tileData, (short) 0);
}
}
}
}
@Override
public void seek(final long pos) throws IOException {
iis.seek(pos);
}
