in src/java.desktop/share/classes/com/sun/imageio/plugins/tiff/TIFFImageWriter.java [524:1599]
void setupMetadata(ColorModel cm, SampleModel sm,
int destWidth, int destHeight)
throws IIOException {
// Get initial IFD from metadata
// Always emit these fields:
//
// Override values from metadata:
//
// planarConfiguration -> chunky (planar not supported on output)
//
// Override values from metadata with image-derived values:
//
// bitsPerSample (if not bilivel)
// colorMap (if palette color)
// photometricInterpretation (derive from image)
// imageLength
// imageWidth
//
// rowsPerStrip \ / tileLength
// stripOffsets | OR | tileOffsets
// stripByteCounts / | tileByteCounts
// \ tileWidth
//
//
// Override values from metadata with write param values:
//
// compression
// Use values from metadata if present for these fields,
// otherwise use defaults:
//
// resolutionUnit
// XResolution (take from metadata if present)
// YResolution
// rowsPerStrip
// sampleFormat
TIFFIFD rootIFD = imageMetadata.getRootIFD();
BaselineTIFFTagSet base = BaselineTIFFTagSet.getInstance();
// If PlanarConfiguration field present, set value to chunky.
TIFFField f =
rootIFD.getTIFFField(BaselineTIFFTagSet.TAG_PLANAR_CONFIGURATION);
if(f != null &&
f.getAsInt(0) != BaselineTIFFTagSet.PLANAR_CONFIGURATION_CHUNKY) {
TIFFField planarConfigurationField =
new TIFFField(base.getTag(BaselineTIFFTagSet.TAG_PLANAR_CONFIGURATION),
BaselineTIFFTagSet.PLANAR_CONFIGURATION_CHUNKY);
rootIFD.addTIFFField(planarConfigurationField);
}
char[] extraSamples = null;
this.photometricInterpretation = -1;
boolean forcePhotometricInterpretation = false;
f =
rootIFD.getTIFFField(BaselineTIFFTagSet.TAG_PHOTOMETRIC_INTERPRETATION);
if (f != null) {
photometricInterpretation = f.getAsInt(0);
if(photometricInterpretation ==
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_PALETTE_COLOR &&
!(cm instanceof IndexColorModel)) {
photometricInterpretation = -1;
} else {
forcePhotometricInterpretation = true;
}
}
int[] sampleSize = sm.getSampleSize();
int numBands = sm.getNumBands();
int numExtraSamples = 0;
// Check that numBands > 1 here because TIFF requires that
// SamplesPerPixel = numBands + numExtraSamples and numBands
// cannot be zero.
if (numBands > 1 && cm != null && cm.hasAlpha()) {
--numBands;
numExtraSamples = 1;
extraSamples = new char[1];
if (cm.isAlphaPremultiplied()) {
extraSamples[0] =
BaselineTIFFTagSet.EXTRA_SAMPLES_ASSOCIATED_ALPHA;
} else {
extraSamples[0] =
BaselineTIFFTagSet.EXTRA_SAMPLES_UNASSOCIATED_ALPHA;
}
}
if (numBands == 3) {
this.nativePhotometricInterpretation =
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_RGB;
if (photometricInterpretation == -1) {
photometricInterpretation =
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_RGB;
}
} else if (sm.getNumBands() == 1 && cm instanceof IndexColorModel) {
IndexColorModel icm = (IndexColorModel)cm;
int r0 = icm.getRed(0);
int r1 = icm.getRed(1);
if (icm.getMapSize() == 2 &&
(r0 == icm.getGreen(0)) && (r0 == icm.getBlue(0)) &&
(r1 == icm.getGreen(1)) && (r1 == icm.getBlue(1)) &&
(r0 == 0 || r0 == 255) &&
(r1 == 0 || r1 == 255) &&
(r0 != r1)) {
// Black/white image
if (r0 == 0) {
nativePhotometricInterpretation =
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_BLACK_IS_ZERO;
} else {
nativePhotometricInterpretation =
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_WHITE_IS_ZERO;
}
// If photometricInterpretation is already set to
// WhiteIsZero or BlackIsZero, leave it alone
if (photometricInterpretation !=
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_BLACK_IS_ZERO &&
photometricInterpretation !=
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_WHITE_IS_ZERO) {
photometricInterpretation =
r0 == 0 ?
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_BLACK_IS_ZERO :
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_WHITE_IS_ZERO;
}
} else {
nativePhotometricInterpretation =
photometricInterpretation =
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_PALETTE_COLOR;
}
} else {
if(cm != null) {
switch(cm.getColorSpace().getType()) {
case ColorSpace.TYPE_Lab:
nativePhotometricInterpretation =
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_CIELAB;
break;
case ColorSpace.TYPE_YCbCr:
nativePhotometricInterpretation =
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_Y_CB_CR;
break;
case ColorSpace.TYPE_CMYK:
nativePhotometricInterpretation =
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_CMYK;
break;
default:
nativePhotometricInterpretation =
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_BLACK_IS_ZERO;
}
} else {
nativePhotometricInterpretation =
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_BLACK_IS_ZERO;
}
if (photometricInterpretation == -1) {
photometricInterpretation = nativePhotometricInterpretation;
}
}
// Emit compression tag
int compressionMode = param.getCompressionMode();
switch(compressionMode) {
case ImageWriteParam.MODE_EXPLICIT:
{
String compressionType = param.getCompressionType();
if (compressionType == null) {
this.compression = BaselineTIFFTagSet.COMPRESSION_NONE;
} else {
// Determine corresponding compression tag value.
int len = compressionTypes.length;
for (int i = 0; i < len; i++) {
if (compressionType.equals(compressionTypes[i])) {
this.compression = compressionNumbers[i];
}
}
}
}
break;
case ImageWriteParam.MODE_COPY_FROM_METADATA:
{
TIFFField compField =
rootIFD.getTIFFField(BaselineTIFFTagSet.TAG_COMPRESSION);
if(compField != null) {
this.compression = compField.getAsInt(0);
} else {
this.compression = BaselineTIFFTagSet.COMPRESSION_NONE;
}
}
break;
default:
this.compression = BaselineTIFFTagSet.COMPRESSION_NONE;
}
TIFFField predictorField =
rootIFD.getTIFFField(BaselineTIFFTagSet.TAG_PREDICTOR);
if (predictorField != null) {
this.predictor = predictorField.getAsInt(0);
// We only support Horizontal Predictor for a bitDepth of 8
if (sampleSize[0] != 8 ||
// Check the value of the tag for validity
(predictor != BaselineTIFFTagSet.PREDICTOR_NONE &&
predictor !=
BaselineTIFFTagSet.PREDICTOR_HORIZONTAL_DIFFERENCING)) {
// Set to default
predictor = BaselineTIFFTagSet.PREDICTOR_NONE;
// Emit this changed predictor value to metadata
TIFFField newPredictorField =
new TIFFField(base.getTag(BaselineTIFFTagSet.TAG_PREDICTOR),
predictor);
rootIFD.addTIFFField(newPredictorField);
}
}
TIFFField compressionField =
new TIFFField(base.getTag(BaselineTIFFTagSet.TAG_COMPRESSION),
compression);
rootIFD.addTIFFField(compressionField);
// Set Exif flag. Note that there is no way to determine definitively
// when an uncompressed thumbnail is being written as the Exif IFD
// pointer field is optional for thumbnails.
boolean isExif = false;
if(numBands == 3 &&
sampleSize[0] == 8 && sampleSize[1] == 8 && sampleSize[2] == 8) {
// Three bands with 8 bits per sample.
if(rootIFD.getTIFFField(ExifParentTIFFTagSet.TAG_EXIF_IFD_POINTER)
!= null) {
// Exif IFD pointer present.
if(compression == BaselineTIFFTagSet.COMPRESSION_NONE &&
(photometricInterpretation ==
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_RGB ||
photometricInterpretation ==
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_Y_CB_CR)) {
// Uncompressed RGB or YCbCr.
isExif = true;
} else if(compression ==
BaselineTIFFTagSet.COMPRESSION_OLD_JPEG) {
// Compressed.
isExif = true;
}
} else if(compressionMode == ImageWriteParam.MODE_EXPLICIT &&
EXIF_JPEG_COMPRESSION_TYPE.equals
(param.getCompressionType())) {
// Exif IFD pointer absent but Exif JPEG compression set.
isExif = true;
}
}
// Initialize JPEG interchange format flag which is used to
// indicate that the image is stored as a single JPEG stream.
// This flag is separated from the 'isExif' flag in case JPEG
// interchange format is eventually supported for non-Exif images.
boolean isJPEGInterchange =
isExif && compression == BaselineTIFFTagSet.COMPRESSION_OLD_JPEG;
this.compressor = null;
if (compression == BaselineTIFFTagSet.COMPRESSION_CCITT_RLE) {
compressor = new TIFFRLECompressor();
if (!forcePhotometricInterpretation) {
photometricInterpretation
= BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_WHITE_IS_ZERO;
}
} else if (compression
== BaselineTIFFTagSet.COMPRESSION_CCITT_T_4) {
compressor = new TIFFT4Compressor();
if (!forcePhotometricInterpretation) {
photometricInterpretation
= BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_WHITE_IS_ZERO;
}
} else if (compression
== BaselineTIFFTagSet.COMPRESSION_CCITT_T_6) {
compressor = new TIFFT6Compressor();
if (!forcePhotometricInterpretation) {
photometricInterpretation
= BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_WHITE_IS_ZERO;
}
} else if (compression
== BaselineTIFFTagSet.COMPRESSION_LZW) {
compressor = new TIFFLZWCompressor(predictor);
} else if (compression
== BaselineTIFFTagSet.COMPRESSION_OLD_JPEG) {
if (isExif) {
compressor = new TIFFExifJPEGCompressor(param);
} else {
throw new IIOException("Old JPEG compression not supported!");
}
} else if (compression
== BaselineTIFFTagSet.COMPRESSION_JPEG) {
if (numBands == 3 && sampleSize[0] == 8
&& sampleSize[1] == 8 && sampleSize[2] == 8) {
photometricInterpretation
= BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_Y_CB_CR;
} else if (numBands == 1 && sampleSize[0] == 8) {
photometricInterpretation
= BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_BLACK_IS_ZERO;
} else {
throw new IIOException("JPEG compression supported for 1- and 3-band byte images only!");
}
compressor = new TIFFJPEGCompressor(param);
} else if (compression
== BaselineTIFFTagSet.COMPRESSION_ZLIB) {
compressor = new TIFFZLibCompressor(param, predictor);
} else if (compression
== BaselineTIFFTagSet.COMPRESSION_PACKBITS) {
compressor = new TIFFPackBitsCompressor();
} else if (compression
== BaselineTIFFTagSet.COMPRESSION_DEFLATE) {
compressor = new TIFFDeflateCompressor(param, predictor);
} else {
// Determine inverse fill setting.
f = rootIFD.getTIFFField(BaselineTIFFTagSet.TAG_FILL_ORDER);
boolean inverseFill = (f != null && f.getAsInt(0) == 2);
if (inverseFill) {
compressor = new TIFFLSBCompressor();
} else {
compressor = new TIFFNullCompressor();
}
}
this.colorConverter = null;
if (cm != null
&& cm.getColorSpace().getType() == ColorSpace.TYPE_RGB) {
//
// Perform color conversion only if image has RGB color space.
//
if (photometricInterpretation
== BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_Y_CB_CR
&& compression
!= BaselineTIFFTagSet.COMPRESSION_JPEG) {
//
// Convert RGB to YCbCr only if compression type is not
// JPEG in which case this is handled implicitly by the
// compressor.
//
colorConverter = new TIFFYCbCrColorConverter(imageMetadata);
} else if (photometricInterpretation
== BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_CIELAB) {
colorConverter = new TIFFCIELabColorConverter();
}
}
//
// Cannot at this time do YCbCr subsampling so set the
// YCbCrSubsampling field value to [1, 1] and the YCbCrPositioning
// field value to "cosited".
//
if(photometricInterpretation ==
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_Y_CB_CR &&
compression !=
BaselineTIFFTagSet.COMPRESSION_JPEG) {
// Remove old subsampling and positioning fields.
rootIFD.removeTIFFField
(BaselineTIFFTagSet.TAG_Y_CB_CR_SUBSAMPLING);
rootIFD.removeTIFFField
(BaselineTIFFTagSet.TAG_Y_CB_CR_POSITIONING);
// Add unity chrominance subsampling factors.
rootIFD.addTIFFField
(new TIFFField
(base.getTag(BaselineTIFFTagSet.TAG_Y_CB_CR_SUBSAMPLING),
TIFFTag.TIFF_SHORT,
2,
new char[] {(char)1, (char)1}));
// Add cosited positioning.
rootIFD.addTIFFField
(new TIFFField
(base.getTag(BaselineTIFFTagSet.TAG_Y_CB_CR_POSITIONING),
TIFFTag.TIFF_SHORT,
1,
new char[] {
(char)BaselineTIFFTagSet.Y_CB_CR_POSITIONING_COSITED
}));
}
TIFFField photometricInterpretationField =
new TIFFField(
base.getTag(BaselineTIFFTagSet.TAG_PHOTOMETRIC_INTERPRETATION),
photometricInterpretation);
rootIFD.addTIFFField(photometricInterpretationField);
this.bitsPerSample = new char[numBands + numExtraSamples];
this.bitDepth = 0;
for (int i = 0; i < numBands; i++) {
this.bitDepth = Math.max(bitDepth, sampleSize[i]);
}
if (bitDepth == 3) {
bitDepth = 4;
} else if (bitDepth > 4 && bitDepth < 8) {
bitDepth = 8;
} else if (bitDepth > 8 && bitDepth < 16) {
bitDepth = 16;
} else if (bitDepth > 16 && bitDepth < 32) {
bitDepth = 32;
} else if (bitDepth > 32) {
bitDepth = 64;
}
for (int i = 0; i < bitsPerSample.length; i++) {
bitsPerSample[i] = (char)bitDepth;
}
// Emit BitsPerSample. If the image is bilevel, emit if and only
// if already in the metadata and correct (count and value == 1).
if (bitsPerSample.length != 1 || bitsPerSample[0] != 1) {
TIFFField bitsPerSampleField =
new TIFFField(
base.getTag(BaselineTIFFTagSet.TAG_BITS_PER_SAMPLE),
TIFFTag.TIFF_SHORT,
bitsPerSample.length,
bitsPerSample);
rootIFD.addTIFFField(bitsPerSampleField);
} else { // bitsPerSample.length == 1 && bitsPerSample[0] == 1
TIFFField bitsPerSampleField =
rootIFD.getTIFFField(BaselineTIFFTagSet.TAG_BITS_PER_SAMPLE);
if(bitsPerSampleField != null) {
int[] bps = bitsPerSampleField.getAsInts();
if(bps == null || bps.length != 1 || bps[0] != 1) {
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_BITS_PER_SAMPLE);
}
}
}
// Prepare SampleFormat field.
f = rootIFD.getTIFFField(BaselineTIFFTagSet.TAG_SAMPLE_FORMAT);
if(f == null && (bitDepth == 16 || bitDepth == 32 || bitDepth == 64)) {
// Set up default content for 16-, 32-, and 64-bit cases.
char sampleFormatValue;
int dataType = sm.getDataType();
if(bitDepth == 16 && dataType == DataBuffer.TYPE_USHORT) {
sampleFormatValue =
(char)BaselineTIFFTagSet.SAMPLE_FORMAT_UNSIGNED_INTEGER;
} else if((bitDepth == 32 && dataType == DataBuffer.TYPE_FLOAT) ||
(bitDepth == 64 && dataType == DataBuffer.TYPE_DOUBLE)) {
sampleFormatValue =
(char)BaselineTIFFTagSet.SAMPLE_FORMAT_FLOATING_POINT;
} else {
sampleFormatValue =
BaselineTIFFTagSet.SAMPLE_FORMAT_SIGNED_INTEGER;
}
this.sampleFormat = (int)sampleFormatValue;
char[] sampleFormatArray = new char[bitsPerSample.length];
Arrays.fill(sampleFormatArray, sampleFormatValue);
// Update the metadata.
TIFFTag sampleFormatTag =
base.getTag(BaselineTIFFTagSet.TAG_SAMPLE_FORMAT);
TIFFField sampleFormatField =
new TIFFField(sampleFormatTag, TIFFTag.TIFF_SHORT,
sampleFormatArray.length, sampleFormatArray);
rootIFD.addTIFFField(sampleFormatField);
} else if(f != null) {
// Get whatever was provided.
sampleFormat = f.getAsInt(0);
} else {
// Set default value for internal use only.
sampleFormat = BaselineTIFFTagSet.SAMPLE_FORMAT_UNDEFINED;
}
if (extraSamples != null) {
TIFFField extraSamplesField =
new TIFFField(
base.getTag(BaselineTIFFTagSet.TAG_EXTRA_SAMPLES),
TIFFTag.TIFF_SHORT,
extraSamples.length,
extraSamples);
rootIFD.addTIFFField(extraSamplesField);
} else {
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_EXTRA_SAMPLES);
}
TIFFField samplesPerPixelField =
new TIFFField(
base.getTag(BaselineTIFFTagSet.TAG_SAMPLES_PER_PIXEL),
bitsPerSample.length);
rootIFD.addTIFFField(samplesPerPixelField);
// Emit ColorMap if image is of palette color type
if (photometricInterpretation ==
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_PALETTE_COLOR &&
cm instanceof IndexColorModel) {
char[] colorMap = new char[3*(1 << bitsPerSample[0])];
IndexColorModel icm = (IndexColorModel)cm;
// mapSize is determined by BitsPerSample, not by incoming ICM.
int mapSize = 1 << bitsPerSample[0];
int indexBound = Math.min(mapSize, icm.getMapSize());
for (int i = 0; i < indexBound; i++) {
colorMap[i] = (char)((icm.getRed(i)*65535)/255);
colorMap[mapSize + i] = (char)((icm.getGreen(i)*65535)/255);
colorMap[2*mapSize + i] = (char)((icm.getBlue(i)*65535)/255);
}
TIFFField colorMapField =
new TIFFField(
base.getTag(BaselineTIFFTagSet.TAG_COLOR_MAP),
TIFFTag.TIFF_SHORT,
colorMap.length,
colorMap);
rootIFD.addTIFFField(colorMapField);
} else {
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_COLOR_MAP);
}
// Emit ICCProfile if there is no ICCProfile field already in the
// metadata and the ColorSpace is non-standard ICC.
if(cm != null &&
rootIFD.getTIFFField(BaselineTIFFTagSet.TAG_ICC_PROFILE) == null &&
ImageUtil.isNonStandardICCColorSpace(cm.getColorSpace())) {
ICC_ColorSpace iccColorSpace = (ICC_ColorSpace)cm.getColorSpace();
byte[] iccProfileData = iccColorSpace.getProfile().getData();
TIFFField iccProfileField =
new TIFFField(base.getTag(BaselineTIFFTagSet.TAG_ICC_PROFILE),
TIFFTag.TIFF_UNDEFINED,
iccProfileData.length,
iccProfileData);
rootIFD.addTIFFField(iccProfileField);
}
// Always emit XResolution and YResolution.
TIFFField XResolutionField =
rootIFD.getTIFFField(BaselineTIFFTagSet.TAG_X_RESOLUTION);
TIFFField YResolutionField =
rootIFD.getTIFFField(BaselineTIFFTagSet.TAG_Y_RESOLUTION);
if(XResolutionField == null && YResolutionField == null) {
long[][] resRational = new long[1][2];
resRational[0] = new long[2];
TIFFField ResolutionUnitField =
rootIFD.getTIFFField(BaselineTIFFTagSet.TAG_RESOLUTION_UNIT);
// Don't force dimensionless if one of the other dimensional
// quantities is present.
if(ResolutionUnitField == null &&
rootIFD.getTIFFField(BaselineTIFFTagSet.TAG_X_POSITION) == null &&
rootIFD.getTIFFField(BaselineTIFFTagSet.TAG_Y_POSITION) == null) {
// Set resolution to unit and units to dimensionless.
resRational[0][0] = 1;
resRational[0][1] = 1;
ResolutionUnitField =
new TIFFField(rootIFD.getTag
(BaselineTIFFTagSet.TAG_RESOLUTION_UNIT),
BaselineTIFFTagSet.RESOLUTION_UNIT_NONE);
rootIFD.addTIFFField(ResolutionUnitField);
} else {
// Set resolution to a value which would make the maximum
// image dimension equal to 4 inches as arbitrarily stated
// in the description of ResolutionUnit in the TIFF 6.0
// specification. If the ResolutionUnit field specifies
// "none" then set the resolution to unity (1/1).
int resolutionUnit = ResolutionUnitField != null ?
ResolutionUnitField.getAsInt(0) :
BaselineTIFFTagSet.RESOLUTION_UNIT_INCH;
int maxDimension = Math.max(destWidth, destHeight);
switch(resolutionUnit) {
case BaselineTIFFTagSet.RESOLUTION_UNIT_INCH:
resRational[0][0] = maxDimension;
resRational[0][1] = 4;
break;
case BaselineTIFFTagSet.RESOLUTION_UNIT_CENTIMETER:
resRational[0][0] = 100L*maxDimension; // divide out 100
resRational[0][1] = 4*254; // 2.54 cm/inch * 100
break;
default:
resRational[0][0] = 1;
resRational[0][1] = 1;
}
}
XResolutionField =
new TIFFField(rootIFD.getTag(BaselineTIFFTagSet.TAG_X_RESOLUTION),
TIFFTag.TIFF_RATIONAL,
1,
resRational);
rootIFD.addTIFFField(XResolutionField);
YResolutionField =
new TIFFField(rootIFD.getTag(BaselineTIFFTagSet.TAG_Y_RESOLUTION),
TIFFTag.TIFF_RATIONAL,
1,
resRational);
rootIFD.addTIFFField(YResolutionField);
} else if(XResolutionField == null && YResolutionField != null) {
// Set XResolution to YResolution.
long[] yResolution =
YResolutionField.getAsRational(0).clone();
XResolutionField =
new TIFFField(rootIFD.getTag(BaselineTIFFTagSet.TAG_X_RESOLUTION),
TIFFTag.TIFF_RATIONAL,
1,
yResolution);
rootIFD.addTIFFField(XResolutionField);
} else if(XResolutionField != null && YResolutionField == null) {
// Set YResolution to XResolution.
long[] xResolution =
XResolutionField.getAsRational(0).clone();
YResolutionField =
new TIFFField(rootIFD.getTag(BaselineTIFFTagSet.TAG_Y_RESOLUTION),
TIFFTag.TIFF_RATIONAL,
1,
xResolution);
rootIFD.addTIFFField(YResolutionField);
}
// Set mandatory fields, overriding metadata passed in
int width = destWidth;
TIFFField imageWidthField =
new TIFFField(base.getTag(BaselineTIFFTagSet.TAG_IMAGE_WIDTH),
width);
rootIFD.addTIFFField(imageWidthField);
int height = destHeight;
TIFFField imageLengthField =
new TIFFField(base.getTag(BaselineTIFFTagSet.TAG_IMAGE_LENGTH),
height);
rootIFD.addTIFFField(imageLengthField);
// Determine rowsPerStrip
int rowsPerStrip;
TIFFField rowsPerStripField =
rootIFD.getTIFFField(BaselineTIFFTagSet.TAG_ROWS_PER_STRIP);
if (rowsPerStripField != null) {
rowsPerStrip = rowsPerStripField.getAsInt(0);
if(rowsPerStrip < 0) {
rowsPerStrip = height;
}
} else {
int bitsPerPixel = bitDepth*(numBands + numExtraSamples);
int bytesPerRow = (bitsPerPixel*width + 7)/8;
rowsPerStrip =
Math.max(Math.max(DEFAULT_BYTES_PER_STRIP/bytesPerRow, 1), 8);
}
rowsPerStrip = Math.min(rowsPerStrip, height);
// Tiling flag.
boolean useTiling = false;
// Analyze tiling parameters
int tilingMode = param.getTilingMode();
if (tilingMode == ImageWriteParam.MODE_DISABLED ||
tilingMode == ImageWriteParam.MODE_DEFAULT) {
this.tileWidth = width;
this.tileLength = rowsPerStrip;
useTiling = false;
} else if (tilingMode == ImageWriteParam.MODE_EXPLICIT) {
tileWidth = param.getTileWidth();
tileLength = param.getTileHeight();
useTiling = true;
} else if (tilingMode == ImageWriteParam.MODE_COPY_FROM_METADATA) {
f = rootIFD.getTIFFField(BaselineTIFFTagSet.TAG_TILE_WIDTH);
if (f == null) {
tileWidth = width;
useTiling = false;
} else {
tileWidth = f.getAsInt(0);
useTiling = true;
}
f = rootIFD.getTIFFField(BaselineTIFFTagSet.TAG_TILE_LENGTH);
if (f == null) {
tileLength = rowsPerStrip;
} else {
tileLength = f.getAsInt(0);
useTiling = true;
}
} else {
throw new IIOException("Illegal value of tilingMode!");
}
if(compression == BaselineTIFFTagSet.COMPRESSION_JPEG) {
// Reset tile size per TTN2 spec for JPEG compression.
int subX;
int subY;
if(numBands == 1) {
subX = subY = 1;
} else {
subX = subY = TIFFJPEGCompressor.CHROMA_SUBSAMPLING;
}
if(useTiling) {
int MCUMultipleX = 8*subX;
int MCUMultipleY = 8*subY;
tileWidth =
Math.max(MCUMultipleX*((tileWidth +
MCUMultipleX/2)/MCUMultipleX),
MCUMultipleX);
tileLength =
Math.max(MCUMultipleY*((tileLength +
MCUMultipleY/2)/MCUMultipleY),
MCUMultipleY);
} else if(rowsPerStrip < height) {
int MCUMultiple = 8*Math.max(subX, subY);
rowsPerStrip = tileLength =
Math.max(MCUMultiple*((tileLength +
MCUMultiple/2)/MCUMultiple),
MCUMultiple);
}
// The written image may be unreadable if these fields are present.
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_JPEG_INTERCHANGE_FORMAT);
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH);
// Also remove fields related to the old JPEG encoding scheme
// which may be misleading when the compression type is JPEG.
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_JPEG_PROC);
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_JPEG_RESTART_INTERVAL);
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_JPEG_LOSSLESS_PREDICTORS);
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_JPEG_POINT_TRANSFORMS);
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_JPEG_Q_TABLES);
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_JPEG_DC_TABLES);
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_JPEG_AC_TABLES);
} else if(isJPEGInterchange) {
// Force tile size to equal image size.
tileWidth = width;
tileLength = height;
} else if(useTiling) {
// Round tile size to multiple of 16 per TIFF 6.0 specification
// (see pages 67-68 of version 6.0.1 from Adobe).
int tileWidthRemainder = tileWidth % 16;
if(tileWidthRemainder != 0) {
// Round to nearest multiple of 16 not less than 16.
tileWidth = Math.max(16*((tileWidth + 8)/16), 16);
processWarningOccurred(currentImage,
"Tile width rounded to multiple of 16.");
}
int tileLengthRemainder = tileLength % 16;
if(tileLengthRemainder != 0) {
// Round to nearest multiple of 16 not less than 16.
tileLength = Math.max(16*((tileLength + 8)/16), 16);
processWarningOccurred(currentImage,
"Tile height rounded to multiple of 16.");
}
}
this.tilesAcross = (width + tileWidth - 1)/tileWidth;
this.tilesDown = (height + tileLength - 1)/tileLength;
if (!useTiling) {
this.isTiled = false;
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_TILE_WIDTH);
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_TILE_LENGTH);
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_TILE_OFFSETS);
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_TILE_BYTE_COUNTS);
rowsPerStripField =
new TIFFField(base.getTag(BaselineTIFFTagSet.TAG_ROWS_PER_STRIP),
rowsPerStrip);
rootIFD.addTIFFField(rowsPerStripField);
TIFFField stripOffsetsField =
new TIFFField(
base.getTag(BaselineTIFFTagSet.TAG_STRIP_OFFSETS),
TIFFTag.TIFF_LONG,
tilesDown);
rootIFD.addTIFFField(stripOffsetsField);
TIFFField stripByteCountsField =
new TIFFField(
base.getTag(BaselineTIFFTagSet.TAG_STRIP_BYTE_COUNTS),
TIFFTag.TIFF_LONG,
tilesDown);
rootIFD.addTIFFField(stripByteCountsField);
} else {
this.isTiled = true;
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_ROWS_PER_STRIP);
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_STRIP_OFFSETS);
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_STRIP_BYTE_COUNTS);
TIFFField tileWidthField =
new TIFFField(base.getTag(BaselineTIFFTagSet.TAG_TILE_WIDTH),
tileWidth);
rootIFD.addTIFFField(tileWidthField);
TIFFField tileLengthField =
new TIFFField(base.getTag(BaselineTIFFTagSet.TAG_TILE_LENGTH),
tileLength);
rootIFD.addTIFFField(tileLengthField);
TIFFField tileOffsetsField =
new TIFFField(
base.getTag(BaselineTIFFTagSet.TAG_TILE_OFFSETS),
TIFFTag.TIFF_LONG,
tilesDown*tilesAcross);
rootIFD.addTIFFField(tileOffsetsField);
TIFFField tileByteCountsField =
new TIFFField(
base.getTag(BaselineTIFFTagSet.TAG_TILE_BYTE_COUNTS),
TIFFTag.TIFF_LONG,
tilesDown*tilesAcross);
rootIFD.addTIFFField(tileByteCountsField);
}
if(isExif) {
//
// Ensure presence of mandatory fields and absence of prohibited
// fields and those that duplicate information in JPEG marker
// segments per tables 14-18 of the Exif 2.2 specification.
//
// If an empty image is being written or inserted then infer
// that the primary IFD is being set up.
boolean isPrimaryIFD = isEncodingEmpty();
// Handle TIFF fields in order of increasing tag number.
if(compression == BaselineTIFFTagSet.COMPRESSION_OLD_JPEG) {
// ImageWidth
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_IMAGE_WIDTH);
// ImageLength
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_IMAGE_LENGTH);
// BitsPerSample
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_BITS_PER_SAMPLE);
// Compression
if(isPrimaryIFD) {
rootIFD.removeTIFFField
(BaselineTIFFTagSet.TAG_COMPRESSION);
}
// PhotometricInterpretation
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_PHOTOMETRIC_INTERPRETATION);
// StripOffsets
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_STRIP_OFFSETS);
// SamplesPerPixel
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_SAMPLES_PER_PIXEL);
// RowsPerStrip
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_ROWS_PER_STRIP);
// StripByteCounts
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_STRIP_BYTE_COUNTS);
// XResolution and YResolution are handled above for all TIFFs.
// PlanarConfiguration
rootIFD.removeTIFFField(BaselineTIFFTagSet.TAG_PLANAR_CONFIGURATION);
// ResolutionUnit
if(rootIFD.getTIFFField
(BaselineTIFFTagSet.TAG_RESOLUTION_UNIT) == null) {
f = new TIFFField(base.getTag
(BaselineTIFFTagSet.TAG_RESOLUTION_UNIT),
BaselineTIFFTagSet.RESOLUTION_UNIT_INCH);
rootIFD.addTIFFField(f);
}
if(isPrimaryIFD) {
// JPEGInterchangeFormat
rootIFD.removeTIFFField
(BaselineTIFFTagSet.TAG_JPEG_INTERCHANGE_FORMAT);
// JPEGInterchangeFormatLength
rootIFD.removeTIFFField
(BaselineTIFFTagSet.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH);
// YCbCrSubsampling
rootIFD.removeTIFFField
(BaselineTIFFTagSet.TAG_Y_CB_CR_SUBSAMPLING);
// YCbCrPositioning
if(rootIFD.getTIFFField
(BaselineTIFFTagSet.TAG_Y_CB_CR_POSITIONING) == null) {
f = new TIFFField
(base.getTag
(BaselineTIFFTagSet.TAG_Y_CB_CR_POSITIONING),
TIFFTag.TIFF_SHORT,
1,
new char[] {
(char)BaselineTIFFTagSet.Y_CB_CR_POSITIONING_CENTERED
});
rootIFD.addTIFFField(f);
}
} else { // Thumbnail IFD
// JPEGInterchangeFormat
f = new TIFFField
(base.getTag
(BaselineTIFFTagSet.TAG_JPEG_INTERCHANGE_FORMAT),
TIFFTag.TIFF_LONG,
1);
rootIFD.addTIFFField(f);
// JPEGInterchangeFormatLength
f = new TIFFField
(base.getTag
(BaselineTIFFTagSet.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH),
TIFFTag.TIFF_LONG,
1);
rootIFD.addTIFFField(f);
// YCbCrSubsampling
rootIFD.removeTIFFField
(BaselineTIFFTagSet.TAG_Y_CB_CR_SUBSAMPLING);
}
} else { // Uncompressed
// ImageWidth through PlanarConfiguration are set above.
// XResolution and YResolution are handled above for all TIFFs.
// ResolutionUnit
if(rootIFD.getTIFFField
(BaselineTIFFTagSet.TAG_RESOLUTION_UNIT) == null) {
f = new TIFFField(base.getTag
(BaselineTIFFTagSet.TAG_RESOLUTION_UNIT),
BaselineTIFFTagSet.RESOLUTION_UNIT_INCH);
rootIFD.addTIFFField(f);
}
// JPEGInterchangeFormat
rootIFD.removeTIFFField
(BaselineTIFFTagSet.TAG_JPEG_INTERCHANGE_FORMAT);
// JPEGInterchangeFormatLength
rootIFD.removeTIFFField
(BaselineTIFFTagSet.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH);
if(photometricInterpretation ==
BaselineTIFFTagSet.PHOTOMETRIC_INTERPRETATION_RGB) {
// YCbCrCoefficients
rootIFD.removeTIFFField
(BaselineTIFFTagSet.TAG_Y_CB_CR_COEFFICIENTS);
// YCbCrSubsampling
rootIFD.removeTIFFField
(BaselineTIFFTagSet.TAG_Y_CB_CR_SUBSAMPLING);
// YCbCrPositioning
rootIFD.removeTIFFField
(BaselineTIFFTagSet.TAG_Y_CB_CR_POSITIONING);
}
}
// Get Exif tags.
TIFFTagSet exifTags = ExifTIFFTagSet.getInstance();
// Retrieve or create the Exif IFD.
TIFFIFD exifIFD = null;
f = rootIFD.getTIFFField
(ExifParentTIFFTagSet.TAG_EXIF_IFD_POINTER);
if(f != null && f.hasDirectory()) {
// Retrieve the Exif IFD.
exifIFD = TIFFIFD.getDirectoryAsIFD(f.getDirectory());
} else if(isPrimaryIFD) {
// Create the Exif IFD.
List<TIFFTagSet> exifTagSets = new ArrayList<TIFFTagSet>(1);
exifTagSets.add(exifTags);
exifIFD = new TIFFIFD(exifTagSets);
// Add it to the root IFD.
TIFFTagSet tagSet = ExifParentTIFFTagSet.getInstance();
TIFFTag exifIFDTag =
tagSet.getTag(ExifParentTIFFTagSet.TAG_EXIF_IFD_POINTER);
rootIFD.addTIFFField(new TIFFField(exifIFDTag,
TIFFTag.TIFF_LONG,
1L,
exifIFD));
}
if(exifIFD != null) {
// Handle Exif private fields in order of increasing
// tag number.
// ExifVersion
if(exifIFD.getTIFFField
(ExifTIFFTagSet.TAG_EXIF_VERSION) == null) {
f = new TIFFField
(exifTags.getTag(ExifTIFFTagSet.TAG_EXIF_VERSION),
TIFFTag.TIFF_UNDEFINED,
4,
ExifTIFFTagSet.EXIF_VERSION_2_2.getBytes(US_ASCII));
exifIFD.addTIFFField(f);
}
if(compression == BaselineTIFFTagSet.COMPRESSION_OLD_JPEG) {
// ComponentsConfiguration
if(exifIFD.getTIFFField
(ExifTIFFTagSet.TAG_COMPONENTS_CONFIGURATION) == null) {
f = new TIFFField
(exifTags.getTag
(ExifTIFFTagSet.TAG_COMPONENTS_CONFIGURATION),
TIFFTag.TIFF_UNDEFINED,
4,
new byte[] {
(byte)ExifTIFFTagSet.COMPONENTS_CONFIGURATION_Y,
(byte)ExifTIFFTagSet.COMPONENTS_CONFIGURATION_CB,
(byte)ExifTIFFTagSet.COMPONENTS_CONFIGURATION_CR,
(byte)0
});
exifIFD.addTIFFField(f);
}
} else {
// ComponentsConfiguration
exifIFD.removeTIFFField
(ExifTIFFTagSet.TAG_COMPONENTS_CONFIGURATION);
// CompressedBitsPerPixel
exifIFD.removeTIFFField
(ExifTIFFTagSet.TAG_COMPRESSED_BITS_PER_PIXEL);
}
// FlashpixVersion
if(exifIFD.getTIFFField
(ExifTIFFTagSet.TAG_FLASHPIX_VERSION) == null) {
f = new TIFFField
(exifTags.getTag(ExifTIFFTagSet.TAG_FLASHPIX_VERSION),
TIFFTag.TIFF_UNDEFINED,
4,
new byte[] {(byte)'0', (byte)'1', (byte)'0', (byte)'0'});
exifIFD.addTIFFField(f);
}
// ColorSpace
if(exifIFD.getTIFFField
(ExifTIFFTagSet.TAG_COLOR_SPACE) == null) {
f = new TIFFField
(exifTags.getTag(ExifTIFFTagSet.TAG_COLOR_SPACE),
TIFFTag.TIFF_SHORT,
1,
new char[] {
(char)ExifTIFFTagSet.COLOR_SPACE_SRGB
});
exifIFD.addTIFFField(f);
}
if(compression == BaselineTIFFTagSet.COMPRESSION_OLD_JPEG) {
// PixelXDimension
if(exifIFD.getTIFFField
(ExifTIFFTagSet.TAG_PIXEL_X_DIMENSION) == null) {
f = new TIFFField
(exifTags.getTag(ExifTIFFTagSet.TAG_PIXEL_X_DIMENSION),
width);
exifIFD.addTIFFField(f);
}
// PixelYDimension
if(exifIFD.getTIFFField
(ExifTIFFTagSet.TAG_PIXEL_Y_DIMENSION) == null) {
f = new TIFFField
(exifTags.getTag(ExifTIFFTagSet.TAG_PIXEL_Y_DIMENSION),
height);
exifIFD.addTIFFField(f);
}
} else {
exifIFD.removeTIFFField
(ExifTIFFTagSet.TAG_INTEROPERABILITY_IFD_POINTER);
}
}
} // if(isExif)
}