private static void ProcessTiffImage(RandomAccessFileOrArray s, TiffImageHelper.TiffParameters tiff)
{
bool recoverFromImageError = tiff.image.IsRecoverFromImageError();
int page = tiff.image.GetPage();
bool direct = tiff.image.IsDirect();
if (page < 1)
{
throw new iText.IO.IOException(iText.IO.IOException.PageNumberMustBeGtEq1);
}
try {
TIFFDirectory dir = new TIFFDirectory(s, page - 1);
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_TILEWIDTH))
{
throw new iText.IO.IOException(iText.IO.IOException.TilesAreNotSupported);
}
int compression = TIFFConstants.COMPRESSION_NONE;
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_COMPRESSION))
{
compression = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_COMPRESSION);
}
switch (compression)
{
case TIFFConstants.COMPRESSION_CCITTRLEW:
case TIFFConstants.COMPRESSION_CCITTRLE:
case TIFFConstants.COMPRESSION_CCITTFAX3:
case TIFFConstants.COMPRESSION_CCITTFAX4: {
break;
}
default: {
ProcessTiffImageColor(dir, s, tiff);
return;
}
}
float rotation = 0;
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_ORIENTATION))
{
int rot = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_ORIENTATION);
if (rot == TIFFConstants.ORIENTATION_BOTRIGHT || rot == TIFFConstants.ORIENTATION_BOTLEFT)
{
rotation = (float)Math.PI;
}
else
{
if (rot == TIFFConstants.ORIENTATION_LEFTTOP || rot == TIFFConstants.ORIENTATION_LEFTBOT)
{
rotation = (float)(Math.PI / 2.0);
}
else
{
if (rot == TIFFConstants.ORIENTATION_RIGHTTOP || rot == TIFFConstants.ORIENTATION_RIGHTBOT)
{
rotation = -(float)(Math.PI / 2.0);
}
}
}
}
long tiffT4Options = 0;
long tiffT6Options = 0;
int fillOrder = 1;
int h = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_IMAGELENGTH);
int w = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_IMAGEWIDTH);
float XYRatio = 0;
int resolutionUnit = TIFFConstants.RESUNIT_INCH;
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_RESOLUTIONUNIT))
{
resolutionUnit = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_RESOLUTIONUNIT);
}
int dpiX = GetDpi(dir.GetField(TIFFConstants.TIFFTAG_XRESOLUTION), resolutionUnit);
int dpiY = GetDpi(dir.GetField(TIFFConstants.TIFFTAG_YRESOLUTION), resolutionUnit);
if (resolutionUnit == TIFFConstants.RESUNIT_NONE)
{
if (dpiY != 0)
{
XYRatio = (float)dpiX / (float)dpiY;
}
dpiX = 0;
dpiY = 0;
}
int rowsStrip = h;
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_ROWSPERSTRIP))
{
rowsStrip = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_ROWSPERSTRIP);
}
if (rowsStrip <= 0 || rowsStrip > h)
{
rowsStrip = h;
}
long[] offset = GetArrayLongShort(dir, TIFFConstants.TIFFTAG_STRIPOFFSETS);
long[] size = GetArrayLongShort(dir, TIFFConstants.TIFFTAG_STRIPBYTECOUNTS);
// some TIFF producers are really lousy, so...
if ((size == null || (size.Length == 1 && (size[0] == 0 || size[0] + offset[0] > s.Length()))) && h == rowsStrip
)
{
size = new long[] { s.Length() - (int)offset[0] };
}
bool reverse = false;
TIFFField fillOrderField = dir.GetField(TIFFConstants.TIFFTAG_FILLORDER);
if (fillOrderField != null)
{
fillOrder = fillOrderField.GetAsInt(0);
}
reverse = (fillOrder == TIFFConstants.FILLORDER_LSB2MSB);
int parameters = 0;
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_PHOTOMETRIC))
{
long photo = dir.GetFieldAsLong(TIFFConstants.TIFFTAG_PHOTOMETRIC);
if (photo == TIFFConstants.PHOTOMETRIC_MINISBLACK)
{
parameters |= RawImageData.CCITT_BLACKIS1;
}
}
int imagecomp = 0;
switch (compression)
{
case TIFFConstants.COMPRESSION_CCITTRLEW:
case TIFFConstants.COMPRESSION_CCITTRLE: {
imagecomp = RawImageData.CCITTG3_1D;
parameters |= RawImageData.CCITT_ENCODEDBYTEALIGN | RawImageData.CCITT_ENDOFBLOCK;
break;
}
case TIFFConstants.COMPRESSION_CCITTFAX3: {
imagecomp = RawImageData.CCITTG3_1D;
parameters |= RawImageData.CCITT_ENDOFLINE | RawImageData.CCITT_ENDOFBLOCK;
TIFFField t4OptionsField = dir.GetField(TIFFConstants.TIFFTAG_GROUP3OPTIONS);
if (t4OptionsField != null)
{
tiffT4Options = t4OptionsField.GetAsLong(0);
if ((tiffT4Options & TIFFConstants.GROUP3OPT_2DENCODING) != 0)
{
imagecomp = RawImageData.CCITTG3_2D;
}
if ((tiffT4Options & TIFFConstants.GROUP3OPT_FILLBITS) != 0)
{
parameters |= RawImageData.CCITT_ENCODEDBYTEALIGN;
}
}
break;
}
case TIFFConstants.COMPRESSION_CCITTFAX4: {
imagecomp = RawImageData.CCITTG4;
TIFFField t6OptionsField = dir.GetField(TIFFConstants.TIFFTAG_GROUP4OPTIONS);
if (t6OptionsField != null)
{
tiffT6Options = t6OptionsField.GetAsLong(0);
}
break;
}
}
//single strip, direct
if (direct && rowsStrip == h)
{
byte[] im = new byte[(int)size[0]];
s.Seek(offset[0]);
s.ReadFully(im);
RawImageHelper.UpdateRawImageParameters(tiff.image, w, h, false, imagecomp, parameters, im, null);
tiff.image.SetInverted(true);
}
else
{
int rowsLeft = h;
CCITTG4Encoder g4 = new CCITTG4Encoder(w);
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);
TIFFFaxDecoder decoder = new TIFFFaxDecoder(fillOrder, w, height);
decoder.SetRecoverFromImageError(recoverFromImageError);
byte[] outBuf = new byte[(w + 7) / 8 * height];
switch (compression)
{
case TIFFConstants.COMPRESSION_CCITTRLEW:
case TIFFConstants.COMPRESSION_CCITTRLE: {
decoder.Decode1D(outBuf, im, 0, height);
g4.Fax4Encode(outBuf, height);
break;
}
case TIFFConstants.COMPRESSION_CCITTFAX3: {
try {
decoder.Decode2D(outBuf, im, 0, height, tiffT4Options);
}
catch (Exception e) {
// let's flip the fill bits and try again...
tiffT4Options ^= TIFFConstants.GROUP3OPT_FILLBITS;
try {
decoder.Decode2D(outBuf, im, 0, height, tiffT4Options);
}
catch (Exception) {
if (!recoverFromImageError)
{
throw e;
}
if (rowsStrip == 1)
{
throw e;
}
// repeat of reading the tiff directly (the if section of this if else structure)
// copy pasted to avoid making a method with 10 tiff
im = new byte[(int)size[0]];
s.Seek(offset[0]);
s.ReadFully(im);
RawImageHelper.UpdateRawImageParameters(tiff.image, w, h, false, imagecomp, parameters, im, null);
tiff.image.SetInverted(true);
tiff.image.SetDpi(dpiX, dpiY);
tiff.image.SetXYRatio(XYRatio);
if (rotation != 0)
{
tiff.image.SetRotation(rotation);
}
return;
}
}
g4.Fax4Encode(outBuf, height);
break;
}
case TIFFConstants.COMPRESSION_CCITTFAX4: {
try {
decoder.DecodeT6(outBuf, im, 0, height, tiffT6Options);
}
catch (iText.IO.IOException e) {
if (!recoverFromImageError)
{
throw;
}
}
g4.Fax4Encode(outBuf, height);
break;
}
}
rowsLeft -= rowsStrip;
}
byte[] g4pic = g4.Close();
RawImageHelper.UpdateRawImageParameters(tiff.image, w, h, false, RawImageData.CCITTG4, parameters & RawImageData
.CCITT_BLACKIS1, g4pic, null);
}
tiff.image.SetDpi(dpiX, dpiY);
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_ICCPROFILE))
{
try {
TIFFField fd = dir.GetField(TIFFConstants.TIFFTAG_ICCPROFILE);
IccProfile icc_prof = IccProfile.GetInstance(fd.GetAsBytes());
if (icc_prof.GetNumComponents() == 1)
{
tiff.image.SetProfile(icc_prof);
}
}
catch (Exception) {
}
}
//empty
if (rotation != 0)
{
tiff.image.SetRotation(rotation);
}
}
catch (Exception) {
throw new iText.IO.IOException(iText.IO.IOException.CannotReadTiffImage);
}
}
/// <summary>This method checks if the image is a valid JPEG and processes some parameters.</summary>
private static void ProcessParameters(Stream jpegStream, String errorID, ImageData image)
{
byte[][] icc = null;
if (jpegStream.Read() != 0xFF || jpegStream.Read() != 0xD8)
{
throw new iText.IO.IOException(iText.IO.IOException._1IsNotAValidJpegFile).SetMessageParams(errorID);
}
bool firstPass = true;
int len;
while (true)
{
int v = jpegStream.Read();
if (v < 0)
{
throw new iText.IO.IOException(iText.IO.IOException.PrematureEofWhileReadingJpeg);
}
if (v == 0xFF)
{
int marker = jpegStream.Read();
if (firstPass && marker == M_APP0)
{
firstPass = false;
len = GetShort(jpegStream);
if (len < 16)
{
StreamUtil.Skip(jpegStream, len - 2);
continue;
}
byte[] bcomp = new byte[JFIF_ID.Length];
int r = jpegStream.Read(bcomp);
if (r != bcomp.Length)
{
throw new iText.IO.IOException(iText.IO.IOException._1CorruptedJfifMarker).SetMessageParams(errorID);
}
bool found = true;
for (int k = 0; k < bcomp.Length; ++k)
{
if (bcomp[k] != JFIF_ID[k])
{
found = false;
break;
}
}
if (!found)
{
StreamUtil.Skip(jpegStream, len - 2 - bcomp.Length);
continue;
}
StreamUtil.Skip(jpegStream, 2);
int units = jpegStream.Read();
int dx = GetShort(jpegStream);
int dy = GetShort(jpegStream);
if (units == 1)
{
image.SetDpi(dx, dy);
}
else
{
if (units == 2)
{
image.SetDpi((int)(dx * 2.54f + 0.5f), (int)(dy * 2.54f + 0.5f));
}
}
StreamUtil.Skip(jpegStream, len - 2 - bcomp.Length - 7);
continue;
}
if (marker == M_APPE)
{
len = GetShort(jpegStream) - 2;
byte[] byteappe = new byte[len];
for (int k = 0; k < len; ++k)
{
byteappe[k] = (byte)jpegStream.Read();
}
if (byteappe.Length >= 12)
{
String appe = iText.IO.Util.JavaUtil.GetStringForBytes(byteappe, 0, 5, "ISO-8859-1");
if (appe.Equals("Adobe"))
{
image.SetInverted(true);
}
}
continue;
}
if (marker == M_APP2)
{
len = GetShort(jpegStream) - 2;
byte[] byteapp2 = new byte[len];
for (int k = 0; k < len; ++k)
{
byteapp2[k] = (byte)jpegStream.Read();
}
if (byteapp2.Length >= 14)
{
String app2 = iText.IO.Util.JavaUtil.GetStringForBytes(byteapp2, 0, 11, "ISO-8859-1");
if (app2.Equals("ICC_PROFILE"))
{
int order = byteapp2[12] & 0xff;
int count = byteapp2[13] & 0xff;
// some jpeg producers don't know how to count to 1
if (order < 1)
{
order = 1;
}
if (count < 1)
{
count = 1;
}
if (icc == null)
{
icc = new byte[count][];
}
icc[order - 1] = byteapp2;
}
}
continue;
}
if (marker == M_APPD)
{
len = GetShort(jpegStream) - 2;
byte[] byteappd = new byte[len];
for (int k = 0; k < len; k++)
{
byteappd[k] = (byte)jpegStream.Read();
}
// search for '8BIM Resolution' marker
int k_1;
for (k_1 = 0; k_1 < len - PS_8BIM_RESO.Length; k_1++)
{
bool found = true;
for (int j = 0; j < PS_8BIM_RESO.Length; j++)
{
if (byteappd[k_1 + j] != PS_8BIM_RESO[j])
{
found = false;
break;
}
}
if (found)
{
break;
}
}
k_1 += PS_8BIM_RESO.Length;
if (k_1 < len - PS_8BIM_RESO.Length)
{
// "PASCAL String" for name, i.e. string prefix with length byte
// padded to be even length; 2 null bytes if empty
byte namelength = byteappd[k_1];
// add length byte
namelength++;
// add padding
if (namelength % 2 == 1)
{
namelength++;
}
// just skip name
k_1 += namelength;
// size of the resolution data
int resosize = (byteappd[k_1] << 24) + (byteappd[k_1 + 1] << 16) + (byteappd[k_1 + 2] << 8) + byteappd[k_1
+ 3];
// should be 16
if (resosize != 16)
{
// fail silently, for now
//System.err.println("DEBUG: unsupported resolution IRB size");
continue;
}
k_1 += 4;
int dx = (byteappd[k_1] << 8) + (byteappd[k_1 + 1] & 0xff);
k_1 += 2;
// skip 2 unknown bytes
k_1 += 2;
int unitsx = (byteappd[k_1] << 8) + (byteappd[k_1 + 1] & 0xff);
k_1 += 2;
// skip 2 unknown bytes
k_1 += 2;
int dy = (byteappd[k_1] << 8) + (byteappd[k_1 + 1] & 0xff);
k_1 += 2;
// skip 2 unknown bytes
k_1 += 2;
int unitsy = (byteappd[k_1] << 8) + (byteappd[k_1 + 1] & 0xff);
if (unitsx == 1 || unitsx == 2)
{
dx = (unitsx == 2 ? (int)(dx * 2.54f + 0.5f) : dx);
// make sure this is consistent with JFIF data
if (image.GetDpiX() != 0 && image.GetDpiX() != dx)
{
ILog logger = LogManager.GetLogger(typeof(JpegImageHelper));
logger.Debug(MessageFormatUtil.Format("Inconsistent metadata (dpiX: {0} vs {1})", image.GetDpiX(), dx));
}
else
{
image.SetDpi(dx, image.GetDpiY());
}
}
if (unitsy == 1 || unitsy == 2)
{
dy = (unitsy == 2 ? (int)(dy * 2.54f + 0.5f) : dy);
// make sure this is consistent with JFIF data
if (image.GetDpiY() != 0 && image.GetDpiY() != dy)
{
ILog logger = LogManager.GetLogger(typeof(JpegImageHelper));
logger.Debug(MessageFormatUtil.Format("Inconsistent metadata (dpiY: {0} vs {1})", image.GetDpiY(), dy));
}
else
{
image.SetDpi(image.GetDpiX(), dx);
}
}
}
continue;
}
firstPass = false;
int markertype = Marker(marker);
if (markertype == VALID_MARKER)
{
StreamUtil.Skip(jpegStream, 2);
if (jpegStream.Read() != 0x08)
{
throw new iText.IO.IOException(iText.IO.IOException._1MustHave8BitsPerComponent).SetMessageParams(errorID);
}
image.SetHeight(GetShort(jpegStream));
image.SetWidth(GetShort(jpegStream));
image.SetColorSpace(jpegStream.Read());
image.SetBpc(8);
break;
}
else
{
if (markertype == UNSUPPORTED_MARKER)
{
throw new iText.IO.IOException(iText.IO.IOException._1UnsupportedJpegMarker2).SetMessageParams(errorID, JavaUtil.IntegerToString
(marker));
}
else
{
if (markertype != NOPARAM_MARKER)
{
StreamUtil.Skip(jpegStream, GetShort(jpegStream) - 2);
}
}
}
}
}
if (icc != null)
{
int total = 0;
for (int k = 0; k < icc.Length; ++k)
{
if (icc[k] == null)
{
icc = null;
return;
}
total += icc[k].Length - 14;
}
byte[] ficc = new byte[total];
total = 0;
for (int k = 0; k < icc.Length; ++k)
{
Array.Copy(icc[k], 14, ficc, total, icc[k].Length - 14);
total += icc[k].Length - 14;
}
try {
image.SetProfile(IccProfile.GetInstance(ficc, image.GetColorSpace()));
}
catch (ArgumentException) {
}
}
}
private static void ReadPng(Stream pngStream, PngImageHelper.PngParameters png)
{
for (int i = 0; i < PNGID.Length; i++)
{
if (PNGID[i] != pngStream.Read())
{
throw new System.IO.IOException("file.is.not.a.valid.png");
}
}
byte[] buffer = new byte[TRANSFERSIZE];
while (true)
{
int len = GetInt(pngStream);
String marker = GetString(pngStream);
if (len < 0 || !CheckMarker(marker))
{
throw new System.IO.IOException("corrupted.png.file");
}
if (IDAT.Equals(marker))
{
int size;
while (len != 0)
{
size = pngStream.JRead(buffer, 0, Math.Min(len, TRANSFERSIZE));
if (size < 0)
{
return;
}
png.idat.Write(buffer, 0, size);
len -= size;
}
}
else
{
if (tRNS.Equals(marker))
{
switch (png.image.GetColorType())
{
case 0: {
if (len >= 2)
{
len -= 2;
int gray = GetWord(pngStream);
if (png.bitDepth == 16)
{
png.transRedGray = gray;
}
else
{
png.additional.Put(PngImageHelperConstants.MASK, MessageFormatUtil.Format("[{0} {1}]", gray, gray));
}
}
break;
}
case 2: {
if (len >= 6)
{
len -= 6;
int red = GetWord(pngStream);
int green = GetWord(pngStream);
int blue = GetWord(pngStream);
if (png.bitDepth == 16)
{
png.transRedGray = red;
png.transGreen = green;
png.transBlue = blue;
}
else
{
png.additional.Put(PngImageHelperConstants.MASK, MessageFormatUtil.Format("[{0} {1} {2} {3} {4} {5}]", red
, red, green, green, blue, blue));
}
}
break;
}
case 3: {
if (len > 0)
{
png.trans = new byte[len];
for (int k = 0; k < len; ++k)
{
png.trans[k] = (byte)pngStream.Read();
}
len = 0;
}
break;
}
}
StreamUtil.Skip(pngStream, len);
}
else
{
if (IHDR.Equals(marker))
{
png.width = GetInt(pngStream);
png.height = GetInt(pngStream);
png.bitDepth = pngStream.Read();
png.image.SetColorType(pngStream.Read());
png.compressionMethod = pngStream.Read();
png.filterMethod = pngStream.Read();
png.interlaceMethod = pngStream.Read();
}
else
{
if (PLTE.Equals(marker))
{
if (png.image.IsIndexed())
{
ByteBuffer colorTableBuf = new ByteBuffer();
while ((len--) > 0)
{
colorTableBuf.Append(pngStream.Read());
}
png.image.SetColorPalette(colorTableBuf.ToByteArray());
}
else
{
StreamUtil.Skip(pngStream, len);
}
}
else
{
if (pHYs.Equals(marker))
{
int dx = GetInt(pngStream);
int dy = GetInt(pngStream);
int unit = pngStream.Read();
if (unit == 1)
{
png.dpiX = (int)(dx * 0.0254f + 0.5f);
png.dpiY = (int)(dy * 0.0254f + 0.5f);
}
else
{
if (dy != 0)
{
png.XYRatio = (float)dx / (float)dy;
}
}
}
else
{
if (cHRM.Equals(marker))
{
PngChromaticities pngChromaticities = new PngChromaticities(GetInt(pngStream) / 100000f, GetInt(pngStream)
/ 100000f, GetInt(pngStream) / 100000f, GetInt(pngStream) / 100000f, GetInt(pngStream) / 100000f, GetInt
(pngStream) / 100000f, GetInt(pngStream) / 100000f, GetInt(pngStream) / 100000f);
if (!(Math.Abs(pngChromaticities.GetXW()) < 0.0001f || Math.Abs(pngChromaticities.GetYW()) < 0.0001f || Math
.Abs(pngChromaticities.GetXR()) < 0.0001f || Math.Abs(pngChromaticities.GetYR()) < 0.0001f || Math.Abs
(pngChromaticities.GetXG()) < 0.0001f || Math.Abs(pngChromaticities.GetYG()) < 0.0001f || Math.Abs(pngChromaticities
.GetXB()) < 0.0001f || Math.Abs(pngChromaticities.GetYB()) < 0.0001f))
{
png.image.SetPngChromaticities(pngChromaticities);
}
}
else
{
if (sRGB.Equals(marker))
{
int ri = pngStream.Read();
png.intent = intents[ri];
png.image.SetGamma(2.2f);
PngChromaticities pngChromaticities = new PngChromaticities(0.3127f, 0.329f, 0.64f, 0.33f, 0.3f, 0.6f, 0.15f
, 0.06f);
png.image.SetPngChromaticities(pngChromaticities);
}
else
{
if (gAMA.Equals(marker))
{
int gm = GetInt(pngStream);
if (gm != 0)
{
png.image.SetGamma(100000f / gm);
if (!png.image.IsHasCHRM())
{
PngChromaticities pngChromaticities = new PngChromaticities(0.3127f, 0.329f, 0.64f, 0.33f, 0.3f, 0.6f, 0.15f
, 0.06f);
png.image.SetPngChromaticities(pngChromaticities);
}
}
}
else
{
if (iCCP.Equals(marker))
{
do
{
--len;
}while (pngStream.Read() != 0);
pngStream.Read();
--len;
byte[] icccom = new byte[len];
int p = 0;
while (len > 0)
{
int r = pngStream.JRead(icccom, p, len);
if (r < 0)
{
throw new System.IO.IOException("premature.end.of.file");
}
p += r;
len -= r;
}
byte[] iccp = FilterUtil.FlateDecode(icccom, true);
icccom = null;
try {
png.iccProfile = IccProfile.GetInstance(iccp);
}
catch (Exception) {
png.iccProfile = null;
}
}
else
{
if (IEND.Equals(marker))
{
break;
}
else
{
StreamUtil.Skip(pngStream, len);
}
}
}
}
}
}
}
}
}
}
StreamUtil.Skip(pngStream, 4);
}
}
private static void ProcessTiffImageColor(TIFFDirectory dir, RandomAccessFileOrArray s, TiffImageHelper.TiffParameters
tiff)
{
try {
int compression = TIFFConstants.COMPRESSION_NONE;
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_COMPRESSION))
{
compression = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_COMPRESSION);
}
int predictor = 1;
TIFFLZWDecoder lzwDecoder = null;
switch (compression)
{
case TIFFConstants.COMPRESSION_NONE:
case TIFFConstants.COMPRESSION_LZW:
case TIFFConstants.COMPRESSION_PACKBITS:
case TIFFConstants.COMPRESSION_DEFLATE:
case TIFFConstants.COMPRESSION_ADOBE_DEFLATE:
case TIFFConstants.COMPRESSION_OJPEG:
case TIFFConstants.COMPRESSION_JPEG: {
break;
}
default: {
throw new iText.IO.IOException(iText.IO.IOException.Compression1IsNotSupported).SetMessageParams(compression
);
}
}
int photometric = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_PHOTOMETRIC);
switch (photometric)
{
case TIFFConstants.PHOTOMETRIC_MINISWHITE:
case TIFFConstants.PHOTOMETRIC_MINISBLACK:
case TIFFConstants.PHOTOMETRIC_RGB:
case TIFFConstants.PHOTOMETRIC_SEPARATED:
case TIFFConstants.PHOTOMETRIC_PALETTE: {
break;
}
default: {
if (compression != TIFFConstants.COMPRESSION_OJPEG && compression != TIFFConstants.COMPRESSION_JPEG)
{
throw new iText.IO.IOException(iText.IO.IOException.Photometric1IsNotSupported).SetMessageParams(photometric
);
}
break;
}
}
float rotation = 0;
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_ORIENTATION))
{
int rot = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_ORIENTATION);
if (rot == TIFFConstants.ORIENTATION_BOTRIGHT || rot == TIFFConstants.ORIENTATION_BOTLEFT)
{
rotation = (float)Math.PI;
}
else
{
if (rot == TIFFConstants.ORIENTATION_LEFTTOP || rot == TIFFConstants.ORIENTATION_LEFTBOT)
{
rotation = (float)(Math.PI / 2.0);
}
else
{
if (rot == TIFFConstants.ORIENTATION_RIGHTTOP || rot == TIFFConstants.ORIENTATION_RIGHTBOT)
{
rotation = -(float)(Math.PI / 2.0);
}
}
}
}
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_PLANARCONFIG) && dir.GetFieldAsLong(TIFFConstants.TIFFTAG_PLANARCONFIG
) == TIFFConstants.PLANARCONFIG_SEPARATE)
{
throw new iText.IO.IOException(iText.IO.IOException.PlanarImagesAreNotSupported);
}
int extraSamples = 0;
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_EXTRASAMPLES))
{
extraSamples = 1;
}
int samplePerPixel = 1;
// 1,3,4
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_SAMPLESPERPIXEL))
{
samplePerPixel = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_SAMPLESPERPIXEL);
}
int bitsPerSample = 1;
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_BITSPERSAMPLE))
{
bitsPerSample = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_BITSPERSAMPLE);
}
switch (bitsPerSample)
{
case 1:
case 2:
case 4:
case 8: {
break;
}
default: {
throw new iText.IO.IOException(iText.IO.IOException.BitsPerSample1IsNotSupported).SetMessageParams(bitsPerSample
);
}
}
int h = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_IMAGELENGTH);
int w = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_IMAGEWIDTH);
int dpiX;
int dpiY;
int resolutionUnit = TIFFConstants.RESUNIT_INCH;
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_RESOLUTIONUNIT))
{
resolutionUnit = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_RESOLUTIONUNIT);
}
dpiX = GetDpi(dir.GetField(TIFFConstants.TIFFTAG_XRESOLUTION), resolutionUnit);
dpiY = GetDpi(dir.GetField(TIFFConstants.TIFFTAG_YRESOLUTION), resolutionUnit);
int fillOrder = 1;
TIFFField fillOrderField = dir.GetField(TIFFConstants.TIFFTAG_FILLORDER);
if (fillOrderField != null)
{
fillOrder = fillOrderField.GetAsInt(0);
}
bool reverse = (fillOrder == TIFFConstants.FILLORDER_LSB2MSB);
int rowsStrip = h;
// another hack for broken tiffs
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_ROWSPERSTRIP))
{
rowsStrip = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_ROWSPERSTRIP);
}
if (rowsStrip <= 0 || rowsStrip > h)
{
rowsStrip = h;
}
long[] offset = GetArrayLongShort(dir, TIFFConstants.TIFFTAG_STRIPOFFSETS);
long[] size = GetArrayLongShort(dir, TIFFConstants.TIFFTAG_STRIPBYTECOUNTS);
// some TIFF producers are really lousy, so...
if ((size == null || (size.Length == 1 && (size[0] == 0 || size[0] + offset[0] > s.Length()))) && h == rowsStrip
)
{
size = new long[] { s.Length() - (int)offset[0] };
}
if (compression == TIFFConstants.COMPRESSION_LZW || compression == TIFFConstants.COMPRESSION_DEFLATE || compression
== TIFFConstants.COMPRESSION_ADOBE_DEFLATE)
{
TIFFField predictorField = dir.GetField(TIFFConstants.TIFFTAG_PREDICTOR);
if (predictorField != null)
{
predictor = predictorField.GetAsInt(0);
if (predictor != 1 && predictor != 2)
{
throw new iText.IO.IOException(iText.IO.IOException.IllegalValueForPredictorInTiffFile);
}
if (predictor == 2 && bitsPerSample != 8)
{
throw new iText.IO.IOException(iText.IO.IOException._1BitSamplesAreNotSupportedForHorizontalDifferencingPredictor
).SetMessageParams(bitsPerSample);
}
}
}
if (compression == TIFFConstants.COMPRESSION_LZW)
{
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 iText.IO.IOException(iText.IO.IOException.MissingTagsForOjpegCompression);
}
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.GetPosition();
posFilePointer += jpegOffset;
s.Seek(posFilePointer);
s.ReadFully(jpeg);
tiff.image.data = jpeg;
tiff.image.SetOriginalType(ImageType.JPEG);
JpegImageHelper.ProcessImage(tiff.image);
tiff.jpegProcessing = true;
}
else
{
if (compression == TIFFConstants.COMPRESSION_JPEG)
{
if (size.Length > 1)
{
throw new iText.IO.IOException(iText.IO.IOException.CompressionJpegIsOnlySupportedWithASingleStripThisImageHas1Strips
).SetMessageParams(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];
Array.Copy(temp, tableoffset, tables, 0, tablelength);
// TODO insert after JFIF header, instead of at the start
byte[] jpegwithtables = new byte[jpeg.Length + tables.Length];
Array.Copy(jpeg, 0, jpegwithtables, 0, 2);
Array.Copy(tables, 0, jpegwithtables, 2, tables.Length);
Array.Copy(jpeg, 2, jpegwithtables, tables.Length + 2, jpeg.Length - 2);
jpeg = jpegwithtables;
}
tiff.image.data = jpeg;
tiff.image.SetOriginalType(ImageType.JPEG);
JpegImageHelper.ProcessImage(tiff.image);
tiff.jpegProcessing = true;
if (photometric == TIFFConstants.PHOTOMETRIC_RGB)
{
tiff.image.SetColorTransform(0);
}
}
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: {
FilterUtil.InflateData(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)
{
RawImageHelper.UpdateRawImageParameters(tiff.image, w, h, false, RawImageData.CCITTG4, photometric == TIFFConstants
.PHOTOMETRIC_MINISBLACK ? RawImageData.CCITT_BLACKIS1 : 0, g4.Close(), null);
}
else
{
zip.Dispose();
RawImageHelper.UpdateRawImageParameters(tiff.image, w, h, samplePerPixel - extraSamples, bitsPerSample, stream
.ToArray());
tiff.image.SetDeflated(true);
}
}
}
tiff.image.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);
IccProfile icc_prof = IccProfile.GetInstance(fd.GetAsBytes());
if (samplePerPixel - extraSamples == icc_prof.GetNumComponents())
{
tiff.image.SetProfile(icc_prof);
}
}
catch (Exception) {
}
}
//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)
{
//there is no sense in >>> for unsigned char
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.
bool 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];
}
}
Object[] indexed = new Object[4];
indexed[0] = "/Indexed";
indexed[1] = "/DeviceRGB";
indexed[2] = gColor - 1;
indexed[3] = PdfEncodings.ConvertToString(palette, null);
tiff.additional = new Dictionary <String, Object>();
tiff.additional.Put("ColorSpace", indexed);
}
}
if (photometric == TIFFConstants.PHOTOMETRIC_MINISWHITE)
{
tiff.image.SetInverted(true);
}
if (rotation != 0)
{
tiff.image.SetRotation(rotation);
}
if (extraSamples > 0)
{
mzip.Dispose();
RawImageData mimg = (RawImageData)ImageDataFactory.CreateRawImage(null);
RawImageHelper.UpdateRawImageParameters(mimg, w, h, 1, bitsPerSample, mstream.ToArray());
mimg.MakeMask();
mimg.SetDeflated(true);
tiff.image.SetImageMask(mimg);
}
}
catch (Exception) {
throw new iText.IO.IOException(iText.IO.IOException.CannotGetTiffImageColor);
}
}
public static PdfStream GetIccProfileStream(Stream iccStream, float[] range)
{
IccProfile iccProfile = IccProfile.GetInstance(iccStream);
return(GetIccProfileStream(iccProfile, range));
}
void readPng()
{
for (int i = 0; i < Pngid.Length; i++)
{
if (Pngid[i] != _isp.ReadByte())
{
throw new IOException("File is not a valid PNG.");
}
}
byte[] buffer = new byte[Transfersize];
while (true)
{
int len = GetInt(_isp);
string marker = GetString(_isp);
if (len < 0 || !checkMarker(marker))
{
throw new IOException("Corrupted PNG file.");
}
if (IDAT.Equals(marker))
{
int size;
while (len != 0)
{
size = _isp.Read(buffer, 0, Math.Min(len, Transfersize));
if (size <= 0)
{
return;
}
_idat.Write(buffer, 0, size);
len -= size;
}
}
else if (tRNS.Equals(marker))
{
switch (_colorType)
{
case 0:
if (len >= 2)
{
len -= 2;
int gray = GetWord(_isp);
if (_bitDepth == 16)
{
_transRedGray = gray;
}
else
{
_additional.Put(PdfName.Mask, new PdfLiteral("[" + gray + " " + gray + "]"));
}
}
break;
case 2:
if (len >= 6)
{
len -= 6;
int red = GetWord(_isp);
int green = GetWord(_isp);
int blue = GetWord(_isp);
if (_bitDepth == 16)
{
_transRedGray = red;
_transGreen = green;
_transBlue = blue;
}
else
{
_additional.Put(PdfName.Mask, new PdfLiteral("[" + red + " " + red + " " + green + " " + green + " " + blue + " " + blue + "]"));
}
}
break;
case 3:
if (len > 0)
{
_trans = new byte[len];
for (int k = 0; k < len; ++k)
{
_trans[k] = (byte)_isp.ReadByte();
}
len = 0;
}
break;
}
Utilities.Skip(_isp, len);
}
else if (IHDR.Equals(marker))
{
_width = GetInt(_isp);
_height = GetInt(_isp);
_bitDepth = _isp.ReadByte();
_colorType = _isp.ReadByte();
_compressionMethod = _isp.ReadByte();
_filterMethod = _isp.ReadByte();
_interlaceMethod = _isp.ReadByte();
}
else if (PLTE.Equals(marker))
{
if (_colorType == 3)
{
PdfArray colorspace = new PdfArray();
colorspace.Add(PdfName.Indexed);
colorspace.Add(getColorspace());
colorspace.Add(new PdfNumber(len / 3 - 1));
ByteBuffer colortable = new ByteBuffer();
while ((len--) > 0)
{
colortable.Append_i(_isp.ReadByte());
}
colorspace.Add(new PdfString(_colorTable = colortable.ToByteArray()));
_additional.Put(PdfName.Colorspace, colorspace);
}
else
{
Utilities.Skip(_isp, len);
}
}
else if (pHYs.Equals(marker))
{
int dx = GetInt(_isp);
int dy = GetInt(_isp);
int unit = _isp.ReadByte();
if (unit == 1)
{
_dpiX = (int)(dx * 0.0254f + 0.5f);
_dpiY = (int)(dy * 0.0254f + 0.5f);
}
else
{
if (dy != 0)
{
_xyRatio = dx / (float)dy;
}
}
}
else if (cHRM.Equals(marker))
{
_xW = GetInt(_isp) / 100000f;
_yW = GetInt(_isp) / 100000f;
_xR = GetInt(_isp) / 100000f;
_yR = GetInt(_isp) / 100000f;
_xG = GetInt(_isp) / 100000f;
_yG = GetInt(_isp) / 100000f;
_xB = GetInt(_isp) / 100000f;
_yB = GetInt(_isp) / 100000f;
_hasChrm = !(Math.Abs(_xW) < 0.0001f || Math.Abs(_yW) < 0.0001f || Math.Abs(_xR) < 0.0001f || Math.Abs(_yR) < 0.0001f || Math.Abs(_xG) < 0.0001f || Math.Abs(_yG) < 0.0001f || Math.Abs(_xB) < 0.0001f || Math.Abs(_yB) < 0.0001f);
}
else if (sRGB.Equals(marker))
{
int ri = _isp.ReadByte();
_intent = _intents[ri];
_gamma = 2.2f;
_xW = 0.3127f;
_yW = 0.329f;
_xR = 0.64f;
_yR = 0.33f;
_xG = 0.3f;
_yG = 0.6f;
_xB = 0.15f;
_yB = 0.06f;
_hasChrm = true;
}
else if (gAMA.Equals(marker))
{
int gm = GetInt(_isp);
if (gm != 0)
{
_gamma = 100000f / gm;
if (!_hasChrm)
{
_xW = 0.3127f;
_yW = 0.329f;
_xR = 0.64f;
_yR = 0.33f;
_xG = 0.3f;
_yG = 0.6f;
_xB = 0.15f;
_yB = 0.06f;
_hasChrm = true;
}
}
}
else if (iCCP.Equals(marker))
{
do
{
--len;
} while (_isp.ReadByte() != 0);
_isp.ReadByte();
--len;
byte[] icccom = new byte[len];
int p = 0;
while (len > 0)
{
int r = _isp.Read(icccom, p, len);
if (r < 0)
{
throw new IOException("Premature end of file.");
}
p += r;
len -= r;
}
byte[] iccp = PdfReader.FlateDecode(icccom, true);
icccom = null;
try
{
_iccProfile = IccProfile.GetInstance(iccp);
}
catch
{
_iccProfile = null;
}
}
else if (IEND.Equals(marker))
{
break;
}
else
{
Utilities.Skip(_isp, len);
}
Utilities.Skip(_isp, 4);
}
}
public static PdfStream GetIccProfileStream(Stream iccStream)
{
IccProfile iccProfile = IccProfile.GetInstance(iccStream);
return(GetIccProfileStream(iccProfile));
}
/// <summary>
/// Reads a page from a TIFF image.
/// by direct byte copying. It's faster but may not work
/// every time
/// </summary>
/// <param name="s">the file source</param>
/// <param name="page">the page to get. The first page is 1</param>
/// <param name="direct">for single strip, CCITT images, generate the image</param>
/// <returns>the Image </returns>
public static Image GetTiffImage(RandomAccessFileOrArray s, int page, bool direct)
{
if (page < 1)
{
throw new InvalidOperationException("The page number must be >= 1.");
}
var dir = new TiffDirectory(s, page - 1);
if (dir.IsTagPresent(TiffConstants.TIFFTAG_TILEWIDTH))
{
throw new InvalidOperationException("Tiles are not supported.");
}
var compression = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_COMPRESSION);
switch (compression)
{
case TiffConstants.COMPRESSION_CCITTRLEW:
case TiffConstants.COMPRESSION_CCITTRLE:
case TiffConstants.COMPRESSION_CCITTFAX3:
case TiffConstants.COMPRESSION_CCITTFAX4:
break;
default:
return(GetTiffImageColor(dir, s));
}
float rotation = 0;
if (dir.IsTagPresent(TiffConstants.TIFFTAG_ORIENTATION))
{
var rot = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_ORIENTATION);
if (rot == TiffConstants.ORIENTATION_BOTRIGHT || rot == TiffConstants.ORIENTATION_BOTLEFT)
{
rotation = (float)Math.PI;
}
else if (rot == TiffConstants.ORIENTATION_LEFTTOP || rot == TiffConstants.ORIENTATION_LEFTBOT)
{
rotation = (float)(Math.PI / 2.0);
}
else if (rot == TiffConstants.ORIENTATION_RIGHTTOP || rot == TiffConstants.ORIENTATION_RIGHTBOT)
{
rotation = -(float)(Math.PI / 2.0);
}
}
Image img = null;
long tiffT4Options = 0;
long tiffT6Options = 0;
var fillOrder = 1;
var h = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_IMAGELENGTH);
var w = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_IMAGEWIDTH);
var dpiX = 0;
var dpiY = 0;
float xyRatio = 0;
var resolutionUnit = TiffConstants.RESUNIT_INCH;
if (dir.IsTagPresent(TiffConstants.TIFFTAG_RESOLUTIONUNIT))
{
resolutionUnit = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_RESOLUTIONUNIT);
}
dpiX = getDpi(dir.GetField(TiffConstants.TIFFTAG_XRESOLUTION), resolutionUnit);
dpiY = getDpi(dir.GetField(TiffConstants.TIFFTAG_YRESOLUTION), resolutionUnit);
if (resolutionUnit == TiffConstants.RESUNIT_NONE)
{
if (dpiY != 0)
{
xyRatio = dpiX / (float)dpiY;
}
dpiX = 0;
dpiY = 0;
}
var rowsStrip = h;
if (dir.IsTagPresent(TiffConstants.TIFFTAG_ROWSPERSTRIP))
{
rowsStrip = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_ROWSPERSTRIP);
}
if (rowsStrip <= 0 || rowsStrip > h)
{
rowsStrip = h;
}
var offset = getArrayLongShort(dir, TiffConstants.TIFFTAG_STRIPOFFSETS);
var size = getArrayLongShort(dir, TiffConstants.TIFFTAG_STRIPBYTECOUNTS);
if ((size == null || (size.Length == 1 && (size[0] == 0 || size[0] + offset[0] > s.Length))) && h == rowsStrip)
{ // some TIFF producers are really lousy, so...
size = new long[] { s.Length - (int)offset[0] };
}
var reverse = false;
var fillOrderField = dir.GetField(TiffConstants.TIFFTAG_FILLORDER);
if (fillOrderField != null)
{
fillOrder = fillOrderField.GetAsInt(0);
}
reverse = (fillOrder == TiffConstants.FILLORDER_LSB2MSB);
var paramsn = 0;
if (dir.IsTagPresent(TiffConstants.TIFFTAG_PHOTOMETRIC))
{
var photo = dir.GetFieldAsLong(TiffConstants.TIFFTAG_PHOTOMETRIC);
if (photo == TiffConstants.PHOTOMETRIC_MINISBLACK)
{
paramsn |= Element.CCITT_BLACKIS1;
}
}
var imagecomp = 0;
switch (compression)
{
case TiffConstants.COMPRESSION_CCITTRLEW:
case TiffConstants.COMPRESSION_CCITTRLE:
imagecomp = Element.CCITTG3_1D;
paramsn |= Element.CCITT_ENCODEDBYTEALIGN | Element.CCITT_ENDOFBLOCK;
break;
case TiffConstants.COMPRESSION_CCITTFAX3:
imagecomp = Element.CCITTG3_1D;
paramsn |= Element.CCITT_ENDOFLINE | Element.CCITT_ENDOFBLOCK;
var t4OptionsField = dir.GetField(TiffConstants.TIFFTAG_GROUP3OPTIONS);
if (t4OptionsField != null)
{
tiffT4Options = t4OptionsField.GetAsLong(0);
if ((tiffT4Options & TiffConstants.GROUP3OPT_2DENCODING) != 0)
{
imagecomp = Element.CCITTG3_2D;
}
if ((tiffT4Options & TiffConstants.GROUP3OPT_FILLBITS) != 0)
{
paramsn |= Element.CCITT_ENCODEDBYTEALIGN;
}
}
break;
case TiffConstants.COMPRESSION_CCITTFAX4:
imagecomp = Element.CCITTG4;
var t6OptionsField = dir.GetField(TiffConstants.TIFFTAG_GROUP4OPTIONS);
if (t6OptionsField != null)
{
tiffT6Options = t6OptionsField.GetAsLong(0);
}
break;
}
if (direct && rowsStrip == h)
{ //single strip, direct
var im = new byte[(int)size[0]];
s.Seek(offset[0]);
s.ReadFully(im);
img = Image.GetInstance(w, h, false, imagecomp, paramsn, im);
img.Inverted = true;
}
else
{
var rowsLeft = h;
var g4 = new Ccittg4Encoder(w);
for (var k = 0; k < offset.Length; ++k)
{
var im = new byte[(int)size[k]];
s.Seek(offset[k]);
s.ReadFully(im);
var height = Math.Min(rowsStrip, rowsLeft);
var decoder = new TiffFaxDecoder(fillOrder, w, height);
var outBuf = new byte[(w + 7) / 8 * height];
switch (compression)
{
case TiffConstants.COMPRESSION_CCITTRLEW:
case TiffConstants.COMPRESSION_CCITTRLE:
decoder.Decode1D(outBuf, im, 0, height);
g4.Fax4Encode(outBuf, height);
break;
case TiffConstants.COMPRESSION_CCITTFAX3:
try
{
decoder.Decode2D(outBuf, im, 0, height, tiffT4Options);
}
catch (Exception e)
{
// let's flip the fill bits and try again...
tiffT4Options ^= TiffConstants.GROUP3OPT_FILLBITS;
try
{
decoder.Decode2D(outBuf, im, 0, height, tiffT4Options);
}
catch
{
throw e;
}
}
g4.Fax4Encode(outBuf, height);
break;
case TiffConstants.COMPRESSION_CCITTFAX4:
decoder.DecodeT6(outBuf, im, 0, height, tiffT6Options);
g4.Fax4Encode(outBuf, height);
break;
}
rowsLeft -= rowsStrip;
}
var g4Pic = g4.Close();
img = Image.GetInstance(w, h, false, Element.CCITTG4, paramsn & Element.CCITT_BLACKIS1, g4Pic);
}
img.SetDpi(dpiX, dpiY);
img.XyRatio = xyRatio;
if (dir.IsTagPresent(TiffConstants.TIFFTAG_ICCPROFILE))
{
try
{
var fd = dir.GetField(TiffConstants.TIFFTAG_ICCPROFILE);
var iccProf = IccProfile.GetInstance(fd.GetAsBytes());
if (iccProf.NumComponents == 1)
{
img.TagIcc = iccProf;
}
}
catch
{
//empty
}
}
img.OriginalType = Image.ORIGINAL_TIFF;
if (rotation.ApproxNotEqual(0))
{
img.InitialRotation = rotation;
}
return(img);
}
protected static Image GetTiffImageColor(TiffDirectory dir, RandomAccessFileOrArray s)
{
var predictor = 1;
TifflzwDecoder lzwDecoder = null;
var compression = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_COMPRESSION);
switch (compression)
{
case TiffConstants.COMPRESSION_NONE:
case TiffConstants.COMPRESSION_LZW:
case TiffConstants.COMPRESSION_PACKBITS:
case TiffConstants.COMPRESSION_DEFLATE:
case TiffConstants.COMPRESSION_ADOBE_DEFLATE:
case TiffConstants.COMPRESSION_OJPEG:
case TiffConstants.COMPRESSION_JPEG:
break;
default:
throw new InvalidOperationException("The compression " + compression + " is not supported.");
}
var photometric = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_PHOTOMETRIC);
switch (photometric)
{
case TiffConstants.PHOTOMETRIC_MINISWHITE:
case TiffConstants.PHOTOMETRIC_MINISBLACK:
case TiffConstants.PHOTOMETRIC_RGB:
case TiffConstants.PHOTOMETRIC_SEPARATED:
case TiffConstants.PHOTOMETRIC_PALETTE:
break;
default:
if (compression != TiffConstants.COMPRESSION_OJPEG && compression != TiffConstants.COMPRESSION_JPEG)
{
throw new InvalidOperationException("The photometric " + photometric + " is not supported.");
}
break;
}
float rotation = 0;
if (dir.IsTagPresent(TiffConstants.TIFFTAG_ORIENTATION))
{
var rot = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_ORIENTATION);
if (rot == TiffConstants.ORIENTATION_BOTRIGHT || rot == TiffConstants.ORIENTATION_BOTLEFT)
{
rotation = (float)Math.PI;
}
else if (rot == TiffConstants.ORIENTATION_LEFTTOP || rot == TiffConstants.ORIENTATION_LEFTBOT)
{
rotation = (float)(Math.PI / 2.0);
}
else if (rot == TiffConstants.ORIENTATION_RIGHTTOP || rot == TiffConstants.ORIENTATION_RIGHTBOT)
{
rotation = -(float)(Math.PI / 2.0);
}
}
if (dir.IsTagPresent(TiffConstants.TIFFTAG_PLANARCONFIG) &&
dir.GetFieldAsLong(TiffConstants.TIFFTAG_PLANARCONFIG) == TiffConstants.PLANARCONFIG_SEPARATE)
{
throw new InvalidOperationException("Planar images are not supported.");
}
if (dir.IsTagPresent(TiffConstants.TIFFTAG_EXTRASAMPLES))
{
throw new InvalidOperationException("Extra samples are not supported.");
}
var samplePerPixel = 1;
if (dir.IsTagPresent(TiffConstants.TIFFTAG_SAMPLESPERPIXEL)) // 1,3,4
{
samplePerPixel = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_SAMPLESPERPIXEL);
}
var bitsPerSample = 1;
if (dir.IsTagPresent(TiffConstants.TIFFTAG_BITSPERSAMPLE))
{
bitsPerSample = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_BITSPERSAMPLE);
}
switch (bitsPerSample)
{
case 1:
case 2:
case 4:
case 8:
break;
default:
throw new InvalidOperationException("Bits per sample " + bitsPerSample + " is not supported.");
}
Image img = null;
var h = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_IMAGELENGTH);
var w = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_IMAGEWIDTH);
var dpiX = 0;
var dpiY = 0;
var resolutionUnit = TiffConstants.RESUNIT_INCH;
if (dir.IsTagPresent(TiffConstants.TIFFTAG_RESOLUTIONUNIT))
{
resolutionUnit = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_RESOLUTIONUNIT);
}
dpiX = getDpi(dir.GetField(TiffConstants.TIFFTAG_XRESOLUTION), resolutionUnit);
dpiY = getDpi(dir.GetField(TiffConstants.TIFFTAG_YRESOLUTION), resolutionUnit);
var fillOrder = 1;
var reverse = false;
var fillOrderField = dir.GetField(TiffConstants.TIFFTAG_FILLORDER);
if (fillOrderField != null)
{
fillOrder = fillOrderField.GetAsInt(0);
}
reverse = (fillOrder == TiffConstants.FILLORDER_LSB2MSB);
var rowsStrip = h;
if (dir.IsTagPresent(TiffConstants.TIFFTAG_ROWSPERSTRIP)) //another hack for broken tiffs
{
rowsStrip = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_ROWSPERSTRIP);
}
if (rowsStrip <= 0 || rowsStrip > h)
{
rowsStrip = h;
}
var offset = getArrayLongShort(dir, TiffConstants.TIFFTAG_STRIPOFFSETS);
var size = getArrayLongShort(dir, TiffConstants.TIFFTAG_STRIPBYTECOUNTS);
if ((size == null || (size.Length == 1 && (size[0] == 0 || size[0] + offset[0] > s.Length))) && h == rowsStrip)
{ // some TIFF producers are really lousy, so...
size = new long[] { s.Length - (int)offset[0] };
}
if (compression == TiffConstants.COMPRESSION_LZW)
{
var predictorField = dir.GetField(TiffConstants.TIFFTAG_PREDICTOR);
if (predictorField != null)
{
predictor = predictorField.GetAsInt(0);
if (predictor != 1 && predictor != 2)
{
throw new InvalidOperationException("Illegal value for Predictor in TIFF file.");
}
if (predictor == 2 && bitsPerSample != 8)
{
throw new InvalidOperationException(bitsPerSample + "-bit samples are not supported for Horizontal differencing Predictor.");
}
}
lzwDecoder = new TifflzwDecoder(w, predictor,
samplePerPixel);
}
var rowsLeft = h;
MemoryStream stream = null;
ZDeflaterOutputStream zip = null;
Ccittg4Encoder g4 = null;
if (bitsPerSample == 1 && samplePerPixel == 1)
{
g4 = new Ccittg4Encoder(w);
}
else
{
stream = new MemoryStream();
if (compression != TiffConstants.COMPRESSION_OJPEG && compression != TiffConstants.COMPRESSION_JPEG)
{
zip = new ZDeflaterOutputStream(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("Missing tag(s) for OJPEG compression.");
}
var jpegOffset = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_JPEGIFOFFSET);
var jpegLength = s.Length - jpegOffset;
if (dir.IsTagPresent(TiffConstants.TIFFTAG_JPEGIFBYTECOUNT))
{
jpegLength = (int)dir.GetFieldAsLong(TiffConstants.TIFFTAG_JPEGIFBYTECOUNT) +
(int)size[0];
}
var jpeg = new byte[Math.Min(jpegLength, s.Length - jpegOffset)];
var posFilePointer = s.FilePointer;
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("Compression JPEG is only supported with a single strip. This image has " + size.Length + " strips.");
}
var jpeg = new byte[(int)size[0]];
s.Seek(offset[0]);
s.ReadFully(jpeg);
img = new Jpeg(jpeg);
}
else
{
for (var k = 0; k < offset.Length; ++k)
{
var im = new byte[(int)size[k]];
s.Seek(offset[k]);
s.ReadFully(im);
var 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);
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)
{
g4.Fax4Encode(outBuf, height);
}
else
{
zip.Write(outBuf, 0, outBuf.Length);
}
rowsLeft -= rowsStrip;
}
if (bitsPerSample == 1 && samplePerPixel == 1)
{
img = Image.GetInstance(w, h, false, Element.CCITTG4,
photometric == TiffConstants.PHOTOMETRIC_MINISBLACK ? Element.CCITT_BLACKIS1 : 0, g4.Close());
}
else
{
zip.Close();
img = Image.GetInstance(w, h, samplePerPixel, bitsPerSample, stream.ToArray());
img.Deflated = true;
}
}
img.SetDpi(dpiX, dpiY);
if (compression != TiffConstants.COMPRESSION_OJPEG && compression != TiffConstants.COMPRESSION_JPEG)
{
if (dir.IsTagPresent(TiffConstants.TIFFTAG_ICCPROFILE))
{
try
{
var fd = dir.GetField(TiffConstants.TIFFTAG_ICCPROFILE);
var iccProf = IccProfile.GetInstance(fd.GetAsBytes());
if (samplePerPixel == iccProf.NumComponents)
{
img.TagIcc = iccProf;
}
}
catch
{
//empty
}
}
if (dir.IsTagPresent(TiffConstants.TIFFTAG_COLORMAP))
{
var fd = dir.GetField(TiffConstants.TIFFTAG_COLORMAP);
var rgb = fd.GetAsChars();
var palette = new byte[rgb.Length];
var gColor = rgb.Length / 3;
var bColor = gColor * 2;
for (var 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);
}
var indexed = new PdfArray();
indexed.Add(PdfName.Indexed);
indexed.Add(PdfName.Devicergb);
indexed.Add(new PdfNumber(gColor - 1));
indexed.Add(new PdfString(palette));
var additional = new PdfDictionary();
additional.Put(PdfName.Colorspace, indexed);
img.Additional = additional;
}
img.OriginalType = Image.ORIGINAL_TIFF;
}
if (photometric == TiffConstants.PHOTOMETRIC_MINISWHITE)
{
img.Inverted = true;
}
if (rotation.ApproxNotEqual(0))
{
img.InitialRotation = rotation;
}
return(img);
}
/// <exception cref="System.IO.IOException"/>
private static void ReadPng(Stream pngStream, PngImageHelper.PngParameters png)
{
for (int i = 0; i < PNGID.Length; i++)
{
if (PNGID[i] != pngStream.Read())
{
throw new System.IO.IOException("file.is.not.a.valid.png");
}
}
byte[] buffer = new byte[TRANSFERSIZE];
while (true)
{
int len = GetInt(pngStream);
String marker = GetString(pngStream);
if (len < 0 || !CheckMarker(marker))
{
throw new System.IO.IOException("corrupted.png.file");
}
if (IDAT.Equals(marker))
{
int size;
while (len != 0)
{
size = pngStream.JRead(buffer, 0, Math.Min(len, TRANSFERSIZE));
if (size < 0)
{
return;
}
png.idat.Write(buffer, 0, size);
len -= size;
}
}
else
{
if (tRNS.Equals(marker))
{
switch (png.colorType)
{
case 0: {
if (len >= 2)
{
len -= 2;
int gray = GetWord(pngStream);
if (png.bitDepth == 16)
{
png.transRedGray = gray;
}
else
{
png.additional.Put("Mask", MessageFormatUtil.Format("[{0} {1}]", gray, gray));
}
}
break;
}
case 2: {
if (len >= 6)
{
len -= 6;
int red = GetWord(pngStream);
int green = GetWord(pngStream);
int blue = GetWord(pngStream);
if (png.bitDepth == 16)
{
png.transRedGray = red;
png.transGreen = green;
png.transBlue = blue;
}
else
{
png.additional.Put("Mask", MessageFormatUtil.Format("[{0} {1} {2} {3} {4} {5}]", red, red, green, green, blue
, blue));
}
}
break;
}
case 3: {
if (len > 0)
{
png.trans = new byte[len];
for (int k = 0; k < len; ++k)
{
png.trans[k] = (byte)pngStream.Read();
}
len = 0;
}
break;
}
}
StreamUtil.Skip(pngStream, len);
}
else
{
if (IHDR.Equals(marker))
{
png.width = GetInt(pngStream);
png.height = GetInt(pngStream);
png.bitDepth = pngStream.Read();
png.colorType = pngStream.Read();
png.compressionMethod = pngStream.Read();
png.filterMethod = pngStream.Read();
png.interlaceMethod = pngStream.Read();
}
else
{
if (PLTE.Equals(marker))
{
if (png.colorType == 3)
{
Object[] colorspace = new Object[4];
colorspace[0] = "/Indexed";
colorspace[1] = GetColorspace(png);
colorspace[2] = len / 3 - 1;
ByteBuffer colorTableBuf = new ByteBuffer();
while ((len--) > 0)
{
colorTableBuf.Append(pngStream.Read());
}
png.colorTable = colorTableBuf.ToByteArray();
colorspace[3] = PdfEncodings.ConvertToString(png.colorTable, null);
png.additional.Put("ColorSpace", colorspace);
}
else
{
StreamUtil.Skip(pngStream, len);
}
}
else
{
if (pHYs.Equals(marker))
{
int dx = GetInt(pngStream);
int dy = GetInt(pngStream);
int unit = pngStream.Read();
if (unit == 1)
{
png.dpiX = (int)(dx * 0.0254f + 0.5f);
png.dpiY = (int)(dy * 0.0254f + 0.5f);
}
else
{
if (dy != 0)
{
png.XYRatio = (float)dx / (float)dy;
}
}
}
else
{
if (cHRM.Equals(marker))
{
png.xW = GetInt(pngStream) / 100000f;
png.yW = GetInt(pngStream) / 100000f;
png.xR = GetInt(pngStream) / 100000f;
png.yR = GetInt(pngStream) / 100000f;
png.xG = GetInt(pngStream) / 100000f;
png.yG = GetInt(pngStream) / 100000f;
png.xB = GetInt(pngStream) / 100000f;
png.yB = GetInt(pngStream) / 100000f;
png.hasCHRM = !(Math.Abs(png.xW) < 0.0001f || Math.Abs(png.yW) < 0.0001f || Math.Abs(png.xR) < 0.0001f ||
Math.Abs(png.yR) < 0.0001f || Math.Abs(png.xG) < 0.0001f || Math.Abs(png.yG) < 0.0001f || Math.Abs(png
.xB) < 0.0001f || Math.Abs(png.yB) < 0.0001f);
}
else
{
if (sRGB.Equals(marker))
{
int ri = pngStream.Read();
png.intent = intents[ri];
png.gamma = 2.2f;
png.xW = 0.3127f;
png.yW = 0.329f;
png.xR = 0.64f;
png.yR = 0.33f;
png.xG = 0.3f;
png.yG = 0.6f;
png.xB = 0.15f;
png.yB = 0.06f;
png.hasCHRM = true;
}
else
{
if (gAMA.Equals(marker))
{
int gm = GetInt(pngStream);
if (gm != 0)
{
png.gamma = 100000f / gm;
if (!png.hasCHRM)
{
png.xW = 0.3127f;
png.yW = 0.329f;
png.xR = 0.64f;
png.yR = 0.33f;
png.xG = 0.3f;
png.yG = 0.6f;
png.xB = 0.15f;
png.yB = 0.06f;
png.hasCHRM = true;
}
}
}
else
{
if (iCCP.Equals(marker))
{
do
{
--len;
}while (pngStream.Read() != 0);
pngStream.Read();
--len;
byte[] icccom = new byte[len];
int p = 0;
while (len > 0)
{
int r = pngStream.JRead(icccom, p, len);
if (r < 0)
{
throw new System.IO.IOException("premature.end.of.file");
}
p += r;
len -= r;
}
byte[] iccp = FilterUtil.FlateDecode(icccom, true);
icccom = null;
try {
png.iccProfile = IccProfile.GetInstance(iccp);
}
catch (Exception) {
png.iccProfile = null;
}
}
else
{
if (IEND.Equals(marker))
{
break;
}
else
{
StreamUtil.Skip(pngStream, len);
}
}
}
}
}
}
}
}
}
}
StreamUtil.Skip(pngStream, 4);
}
}
/// <summary>
/// private methods
/// </summary>
/// <summary>
/// This method checks if the image is a valid JPEG and processes some parameters.
/// </summary>
private void processParameters()
{
type = JPEG;
originalType = ORIGINAL_JPEG;
Stream istr = null;
try
{
string errorId;
if (rawData == null)
{
istr = url.GetResponseStream();
errorId = url.ToString();
}
else
{
istr = new MemoryStream(rawData);
errorId = "Byte array";
}
if (istr.ReadByte() != 0xFF || istr.ReadByte() != 0xD8)
{
throw new BadElementException(errorId + " is not a valid JPEG-file.");
}
bool firstPass = true;
int len;
while (true)
{
int v = istr.ReadByte();
if (v < 0)
{
throw new IOException("Premature EOF while reading JPG.");
}
if (v == 0xFF)
{
int marker = istr.ReadByte();
if (firstPass && marker == M_APP0)
{
firstPass = false;
len = getShort(istr);
if (len < 16)
{
Utilities.Skip(istr, len - 2);
continue;
}
byte[] bcomp = new byte[JfifId.Length];
int r = istr.Read(bcomp, 0, bcomp.Length);
if (r != bcomp.Length)
{
throw new BadElementException(errorId + " corrupted JFIF marker.");
}
bool found = true;
for (int k = 0; k < bcomp.Length; ++k)
{
if (bcomp[k] != JfifId[k])
{
found = false;
break;
}
}
if (!found)
{
Utilities.Skip(istr, len - 2 - bcomp.Length);
continue;
}
Utilities.Skip(istr, 2);
int units = istr.ReadByte();
int dx = getShort(istr);
int dy = getShort(istr);
if (units == 1)
{
dpiX = dx;
dpiY = dy;
}
else if (units == 2)
{
dpiX = (int)(dx * 2.54f + 0.5f);
dpiY = (int)(dy * 2.54f + 0.5f);
}
Utilities.Skip(istr, len - 2 - bcomp.Length - 7);
continue;
}
if (marker == M_APPE)
{
len = getShort(istr) - 2;
byte[] byteappe = new byte[len];
for (int k = 0; k < len; ++k)
{
byteappe[k] = (byte)istr.ReadByte();
}
if (byteappe.Length >= 12)
{
string appe = System.Text.Encoding.ASCII.GetString(byteappe, 0, 5);
if (Util.EqualsIgnoreCase(appe, "adobe"))
{
Invert = true;
}
}
continue;
}
if (marker == M_APP2)
{
len = getShort(istr) - 2;
byte[] byteapp2 = new byte[len];
for (int k = 0; k < len; ++k)
{
byteapp2[k] = (byte)istr.ReadByte();
}
if (byteapp2.Length >= 14)
{
string app2 = System.Text.Encoding.ASCII.GetString(byteapp2, 0, 11);
if (app2.Equals("ICC_PROFILE"))
{
int order = byteapp2[12] & 0xff;
int count = byteapp2[13] & 0xff;
if (_icc == null)
{
_icc = new byte[count][];
}
_icc[order - 1] = byteapp2;
}
}
continue;
}
firstPass = false;
int markertype = markerType(marker);
if (markertype == VALID_MARKER)
{
Utilities.Skip(istr, 2);
if (istr.ReadByte() != 0x08)
{
throw new BadElementException(errorId + " must have 8 bits per component.");
}
scaledHeight = getShort(istr);
Top = scaledHeight;
scaledWidth = getShort(istr);
Right = scaledWidth;
colorspace = istr.ReadByte();
bpc = 8;
break;
}
else if (markertype == UNSUPPORTED_MARKER)
{
throw new BadElementException(errorId + ": unsupported JPEG marker: " + marker);
}
else if (markertype != NOPARAM_MARKER)
{
Utilities.Skip(istr, getShort(istr) - 2);
}
}
}
}
finally
{
if (istr != null)
{
istr.Dispose();
}
}
plainWidth = Width;
plainHeight = Height;
if (_icc != null)
{
int total = 0;
for (int k = 0; k < _icc.Length; ++k)
{
if (_icc[k] == null)
{
_icc = null;
return;
}
total += _icc[k].Length - 14;
}
byte[] ficc = new byte[total];
total = 0;
for (int k = 0; k < _icc.Length; ++k)
{
Array.Copy(_icc[k], 14, ficc, total, _icc[k].Length - 14);
total += _icc[k].Length - 14;
}
try
{
IccProfile iccProf = IccProfile.GetInstance(ficc);
TagIcc = iccProf;
}
catch { }
_icc = null;
}
}