/**
* Generate an object that contains an CMS Compressed Data
*/
public CmsCompressedData Generate(
CmsProcessable content,
string compressionOid)
{
AlgorithmIdentifier comAlgId;
Asn1OctetString comOcts;
try
{
MemoryStream bOut = new MemoryStream();
ZDeflaterOutputStream zOut = new ZDeflaterOutputStream(bOut);
content.Write(zOut);
zOut.Close();
comAlgId = new AlgorithmIdentifier(
new DerObjectIdentifier(compressionOid),
null);
comOcts = new BerOctetString(bOut.ToArray());
}
catch (IOException e)
{
throw new CmsException("exception encoding data.", e);
}
ContentInfo comContent = new ContentInfo(CmsObjectIdentifiers.Data, comOcts);
ContentInfo contentInfo = new ContentInfo(
CmsObjectIdentifiers.CompressedData,
new CompressedData(comAlgId, comContent));
return(new CmsCompressedData(contentInfo));
}
static Image ProcessExtraSamples(ZDeflaterOutputStream zip, ZDeflaterOutputStream mzip, byte[] outBuf, int samplePerPixel, int bitsPerSample, int width, int height)
{
if (bitsPerSample == 8)
{
byte[] mask = new byte[width * height];
int mptr = 0;
int optr = 0;
int total = width * height * samplePerPixel;
for (int k = 0; k < total; k += samplePerPixel)
{
for (int s = 0; s < samplePerPixel - 1; ++s)
{
outBuf[optr++] = outBuf[k + s];
}
mask[mptr++] = outBuf[k + samplePerPixel - 1];
}
zip.Write(outBuf, 0, optr);
mzip.Write(mask, 0, mptr);
}
else
{
throw new ArgumentException(MessageLocalization.GetComposedMessage("extra.samples.are.not.supported"));
}
return(null);
}
internal CmsCompressedOutputStream(
ZDeflaterOutputStream outStream,
BerSequenceGenerator sGen,
BerSequenceGenerator cGen,
BerSequenceGenerator eiGen)
{
_out = outStream;
_sGen = sGen;
_cGen = cGen;
_eiGen = eiGen;
}
public static void FlateEncode(Stream rawData, Stream result)
{
ZDeflaterOutputStream stream = new ZDeflaterOutputStream(result);
byte[] buffer = new byte[0x400];
int count = 0;
while ((count = rawData.Read(buffer, 0, buffer.Length)) > 0)
{
stream.Write(buffer, 0, count);
}
stream.Finish();
}
/// <summary>
/// Encodes the inner.
/// </summary>
/// <param name="rawData">The raw data.</param>
/// <param name="result">The result.</param>
/// <param name="options">The options.</param>
protected override void EncodeInner(Stream rawData, Stream result, Dictionary <PdfName, PdfObjectBase> options)
{
ZDeflaterOutputStream stream = new ZDeflaterOutputStream(result);
byte[] buffer = new byte[0x400];
int count = 0;
while ((count = rawData.Read(buffer, 0, buffer.Length)) > 0)
{
stream.Write(buffer, 0, count);
}
stream.Finish();
}
public void WriteData(byte[] data, int stride)
{
MemoryStream stream = new MemoryStream();
ZDeflaterOutputStream zip = new ZDeflaterOutputStream(stream, 5);
for (int k = 0; k < data.Length; k += stride)
{
zip.WriteByte(0);
zip.Write(data, k, stride);
}
zip.Finish();
WriteChunk(IDAT, stream.ToArray());
}
virtual public void WriteIccProfile(byte[] data)
{
MemoryStream stream = new MemoryStream();
stream.WriteByte((byte)'I');
stream.WriteByte((byte)'C');
stream.WriteByte((byte)'C');
stream.WriteByte(0);
stream.WriteByte(0);
ZDeflaterOutputStream zip = new ZDeflaterOutputStream(stream, 5);
zip.Write(data, 0, data.Length);
zip.Close();
WriteChunk(iCCP, stream.ToArray());
}
/**Sets the data associated with the stream
* @param data raw data, decrypted and uncompressed.
*/
public void SetData(byte[] data)
{
Remove(PdfName.FILTER);
this.offset = -1;
if (Document.Compress)
{
MemoryStream stream = new MemoryStream();
ZDeflaterOutputStream zip = new ZDeflaterOutputStream(stream);
zip.Write(data, 0, data.Length);
zip.Close();
bytes = stream.ToArray();
Put(PdfName.FILTER, PdfName.FLATEDECODE);
}
else
{
bytes = data;
}
Length = bytes.Length;
}
/// <summary>
/// Creates a new PDF stream object that will replace a stream
/// in a existing PDF file.
/// @since 2.1.3 (replacing the existing constructor without param compressionLevel)
/// </summary>
/// <param name="reader">the reader that holds the existing PDF</param>
/// <param name="conts">the new content</param>
/// <param name="compressionLevel">the compression level for the content</param>
public PrStream(PdfReader reader, byte[] conts, int compressionLevel)
{
this.reader = reader;
offset = -1;
if (Document.Compress)
{
MemoryStream stream = new MemoryStream();
ZDeflaterOutputStream zip = new ZDeflaterOutputStream(stream, compressionLevel);
zip.Write(conts, 0, conts.Length);
zip.Close();
Bytes = stream.ToArray();
Put(PdfName.Filter, PdfName.Flatedecode);
}
else
{
Bytes = conts;
}
Length = Bytes.Length;
}
/**
* Creates a new PDF stream object that will replace a stream
* in a existing PDF file.
* @param reader the reader that holds the existing PDF
* @param conts the new content
* @param compressionLevel the compression level for the content
* @since 2.1.3 (replacing the existing constructor without param compressionLevel)
*/
public PRStream(PdfReader reader, byte[] conts, int compressionLevel)
{
this.reader = reader;
this.offset = -1;
if (Document.Compress)
{
MemoryStream stream = new MemoryStream();
ZDeflaterOutputStream zip = new ZDeflaterOutputStream(stream, compressionLevel);
zip.Write(conts, 0, conts.Length);
zip.Close();
bytes = stream.ToArray();
Put(PdfName.FILTER, PdfName.FLATEDECODE);
}
else
{
bytes = conts;
}
Length = bytes.Length;
}
/// <summary>
/// Sets the data associated with the stream, either compressed or
/// uncompressed. Note that the data will never be compressed if
/// Document.compress is set to false.
/// @since iText 2.1.3
/// </summary>
/// <param name="data">raw data, decrypted and uncompressed.</param>
/// <param name="compress">true if you want the stream to be compresssed.</param>
/// <param name="compressionLevel">a value between -1 and 9 (ignored if compress == false)</param>
public void SetData(byte[] data, bool compress, int compressionLevel)
{
Remove(PdfName.Filter);
offset = -1;
if (Document.Compress && compress)
{
MemoryStream stream = new MemoryStream();
ZDeflaterOutputStream zip = new ZDeflaterOutputStream(stream, compressionLevel);
zip.Write(data, 0, data.Length);
zip.Close();
Bytes = stream.ToArray();
CompressionLevel = compressionLevel;
Put(PdfName.Filter, PdfName.Flatedecode);
}
else
{
Bytes = data;
}
Length = Bytes.Length;
}
virtual public void WriteData(byte[] data, int stride)
{
MemoryStream stream = new MemoryStream();
ZDeflaterOutputStream zip = new ZDeflaterOutputStream(stream, 5);
int k;
for (k = 0; k < data.Length - stride; k += stride)
{
zip.WriteByte(0);
zip.Write(data, k, stride);
}
int remaining = data.Length - k;
if (remaining > 0)
{
zip.WriteByte(0);
zip.Write(data, k, remaining);
}
zip.Close();
WriteChunk(IDAT, stream.ToArray());
}
protected static Image GetTiffImageColor(TIFFDirectory dir, RandomAccessFileOrArray s)
{
int predictor = 1;
TIFFLZWDecoder lzwDecoder = null;
int 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 ArgumentException(MessageLocalization.GetComposedMessage("the.compression.1.is.not.supported", 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 ArgumentException(MessageLocalization.GetComposedMessage("the.photometric.1.is.not.supported", 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 ArgumentException(MessageLocalization.GetComposedMessage("planar.images.are.not.supported"));
}
int extraSamples = 0;
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_EXTRASAMPLES))
{
extraSamples = 1;
}
int samplePerPixel = 1;
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_SAMPLESPERPIXEL)) // 1,3,4
{
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 ArgumentException(MessageLocalization.GetComposedMessage("bits.per.sample.1.is.not.supported", bitsPerSample));
}
Image img = null;
int h = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_IMAGELENGTH);
int w = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_IMAGEWIDTH);
int dpiX = 0;
int dpiY = 0;
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;
bool reverse = false;
TIFFField fillOrderField = dir.GetField(TIFFConstants.TIFFTAG_FILLORDER);
if (fillOrderField != null)
{
fillOrder = fillOrderField.GetAsInt(0);
}
reverse = (fillOrder == TIFFConstants.FILLORDER_LSB2MSB);
int 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;
}
long[] offset = GetArrayLongShort(dir, TIFFConstants.TIFFTAG_STRIPOFFSETS);
long[] 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 || 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 Exception(MessageLocalization.GetComposedMessage("illegal.value.for.predictor.in.tiff.file"));
}
if (predictor == 2 && bitsPerSample != 8)
{
throw new Exception(MessageLocalization.GetComposedMessage("1.bit.samples.are.not.supported.for.horizontal.differencing.predictor", bitsPerSample));
}
}
}
if (compression == TIFFConstants.COMPRESSION_LZW)
{
lzwDecoder = new TIFFLZWDecoder(w, predictor, samplePerPixel);
}
int rowsLeft = h;
MemoryStream stream = null;
MemoryStream mstream = null;
ZDeflaterOutputStream zip = null;
ZDeflaterOutputStream mzip = null;
if (extraSamples > 0)
{
mstream = new MemoryStream();
mzip = new ZDeflaterOutputStream(mstream);
}
CCITTG4Encoder g4 = null;
if (bitsPerSample == 1 && samplePerPixel == 1 && photometric != TIFFConstants.PHOTOMETRIC_PALETTE)
{
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(MessageLocalization.GetComposedMessage("missing.tag.s.for.ojpeg.compression"));
}
int jpegOffset = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_JPEGIFOFFSET);
int jpegLength = (int)s.Length - jpegOffset;
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_JPEGIFBYTECOUNT))
{
jpegLength = (int)dir.GetFieldAsLong(TIFFConstants.TIFFTAG_JPEGIFBYTECOUNT) +
(int)size[0];
}
byte[] jpeg = new byte[Math.Min(jpegLength, s.Length - jpegOffset)];
int posFilePointer = (int)s.FilePointer;
posFilePointer += jpegOffset;
s.Seek(posFilePointer);
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;
}
img = new Jpeg(jpeg);
}
else if (compression == TIFFConstants.COMPRESSION_JPEG)
{
if (size.Length > 1)
{
throw new IOException(MessageLocalization.GetComposedMessage("compression.jpeg.is.only.supported.with.a.single.strip.this.image.has.1.strips", size.Length));
}
byte[] jpeg = new byte[(int)size[0]];
s.Seek(offset[0]);
s.ReadFully(jpeg);
img = new Jpeg(jpeg);
}
else
{
for (int k = 0; k < offset.Length; ++k)
{
byte[] im = new byte[(int)size[k]];
s.Seek(offset[k]);
s.ReadFully(im);
int height = Math.Min(rowsStrip, rowsLeft);
byte[] outBuf = null;
if (compression != TIFFConstants.COMPRESSION_NONE)
{
outBuf = new byte[(w * bitsPerSample * samplePerPixel + 7) / 8 * height];
}
if (reverse)
{
TIFFFaxDecoder.ReverseBits(im);
}
switch (compression)
{
case TIFFConstants.COMPRESSION_DEFLATE:
case TIFFConstants.COMPRESSION_ADOBE_DEFLATE:
Inflate(im, outBuf);
ApplyPredictor(outBuf, predictor, w, height, samplePerPixel);
break;
case TIFFConstants.COMPRESSION_NONE:
outBuf = im;
break;
case TIFFConstants.COMPRESSION_PACKBITS:
DecodePackbits(im, outBuf);
break;
case TIFFConstants.COMPRESSION_LZW:
lzwDecoder.Decode(im, outBuf, height);
break;
}
if (bitsPerSample == 1 && samplePerPixel == 1 && photometric != TIFFConstants.PHOTOMETRIC_PALETTE)
{
g4.Fax4Encode(outBuf, height);
}
else
{
if (extraSamples > 0)
{
ProcessExtraSamples(zip, mzip, outBuf, samplePerPixel, bitsPerSample, w, height);
}
else
{
zip.Write(outBuf, 0, outBuf.Length);
}
}
rowsLeft -= rowsStrip;
}
if (bitsPerSample == 1 && samplePerPixel == 1 && photometric != TIFFConstants.PHOTOMETRIC_PALETTE)
{
img = Image.GetInstance(w, h, false, Image.CCITTG4,
photometric == TIFFConstants.PHOTOMETRIC_MINISBLACK ? Image.CCITT_BLACKIS1 : 0, g4.Close());
}
else
{
zip.Close();
img = new ImgRaw(w, h, samplePerPixel - extraSamples, bitsPerSample, stream.ToArray());
img.Deflated = true;
}
}
img.SetDpi(dpiX, dpiY);
if (compression != TIFFConstants.COMPRESSION_OJPEG && compression != TIFFConstants.COMPRESSION_JPEG)
{
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_ICCPROFILE))
{
try {
TIFFField fd = dir.GetField(TIFFConstants.TIFFTAG_ICCPROFILE);
ICC_Profile icc_prof = ICC_Profile.GetInstance(fd.GetAsBytes());
if (samplePerPixel - extraSamples == icc_prof.NumComponents)
{
img.TagICC = icc_prof;
}
}
catch {
//empty
}
}
if (dir.IsTagPresent(TIFFConstants.TIFFTAG_COLORMAP))
{
TIFFField fd = dir.GetField(TIFFConstants.TIFFTAG_COLORMAP);
char[] rgb = fd.GetAsChars();
byte[] palette = new byte[rgb.Length];
int gColor = rgb.Length / 3;
int bColor = gColor * 2;
for (int k = 0; k < gColor; ++k)
{
palette[k * 3] = (byte)(rgb[k] >> 8);
palette[k * 3 + 1] = (byte)(rgb[k + gColor] >> 8);
palette[k * 3 + 2] = (byte)(rgb[k + bColor] >> 8);
}
// Colormap components are supposed to go from 0 to 655535 but,
// as usually, some tiff producers just put values from 0 to 255.
// Let's check for these broken tiffs.
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];
}
}
PdfArray indexed = new PdfArray();
indexed.Add(PdfName.INDEXED);
indexed.Add(PdfName.DEVICERGB);
indexed.Add(new PdfNumber(gColor - 1));
indexed.Add(new PdfString(palette));
PdfDictionary additional = new PdfDictionary();
additional.Put(PdfName.COLORSPACE, indexed);
img.Additional = additional;
}
img.OriginalType = Image.ORIGINAL_TIFF;
}
if (photometric == TIFFConstants.PHOTOMETRIC_MINISWHITE)
{
img.Inverted = true;
}
if (rotation != 0)
{
img.InitialRotation = rotation;
}
if (extraSamples > 0)
{
mzip.Close();
Image mimg = Image.GetInstance(w, h, 1, bitsPerSample, mstream.ToArray());
mimg.MakeMask();
mimg.Deflated = true;
img.ImageMask = mimg;
}
return(img);
}
/**
* @see com.lowagie.text.pdf.PdfDictionary#toPdf(com.lowagie.text.pdf.PdfWriter, java.io.OutputStream)
*/
public override void ToPdf(PdfWriter writer, Stream os)
{
if (inputStream != null && compressed)
{
Put(PdfName.FILTER, PdfName.FLATEDECODE);
}
PdfEncryption crypto = null;
if (writer != null)
{
crypto = writer.Encryption;
}
if (crypto != null)
{
PdfObject filter = Get(PdfName.FILTER);
if (filter != null)
{
if (PdfName.CRYPT.Equals(filter))
{
crypto = null;
}
else if (filter.IsArray())
{
PdfArray a = (PdfArray)filter;
if (!a.IsEmpty() && PdfName.CRYPT.Equals(a[0]))
{
crypto = null;
}
}
}
}
if (crypto != null && crypto.IsEmbeddedFilesOnly())
{
PdfArray filter = new PdfArray();
PdfArray decodeparms = new PdfArray();
PdfDictionary crypt = new PdfDictionary();
crypt.Put(PdfName.NAME, PdfName.STDCF);
filter.Add(PdfName.CRYPT);
decodeparms.Add(crypt);
if (compressed)
{
filter.Add(PdfName.FLATEDECODE);
decodeparms.Add(new PdfNull());
}
Put(PdfName.FILTER, filter);
Put(PdfName.DECODEPARMS, decodeparms);
}
PdfObject nn = Get(PdfName.LENGTH);
if (crypto != null && nn != null && nn.IsNumber())
{
int sz = ((PdfNumber)nn).IntValue;
Put(PdfName.LENGTH, new PdfNumber(crypto.CalculateStreamSize(sz)));
SuperToPdf(writer, os);
Put(PdfName.LENGTH, nn);
}
else
{
SuperToPdf(writer, os);
}
os.Write(STARTSTREAM, 0, STARTSTREAM.Length);
if (inputStream != null)
{
rawLength = 0;
ZDeflaterOutputStream def = null;
OutputStreamCounter osc = new OutputStreamCounter(os);
OutputStreamEncryption ose = null;
Stream fout = osc;
if (crypto != null)
{
fout = ose = crypto.GetEncryptionStream(fout);
}
if (compressed)
{
fout = def = new ZDeflaterOutputStream(fout, compressionLevel);
}
byte[] buf = new byte[4192];
while (true)
{
int n = inputStream.Read(buf, 0, buf.Length);
if (n <= 0)
{
break;
}
fout.Write(buf, 0, n);
rawLength += n;
}
if (def != null)
{
def.Finish();
}
if (ose != null)
{
ose.Finish();
}
inputStreamLength = (int)osc.Counter;
}
else
{
if (crypto == null)
{
if (streamBytes != null)
{
streamBytes.WriteTo(os);
}
else
{
os.Write(bytes, 0, bytes.Length);
}
}
else
{
byte[] b;
if (streamBytes != null)
{
b = crypto.EncryptByteArray(streamBytes.ToArray());
}
else
{
b = crypto.EncryptByteArray(bytes);
}
os.Write(b, 0, b.Length);
}
}
os.Write(ENDSTREAM, 0, ENDSTREAM.Length);
}
public override void ToPdf(PdfWriter writer, Stream os)
{
if (inputStream != null && compressed)
{
Put(PdfName.FILTER, PdfName.FLATEDECODE);
}
PdfEncryption crypto = null;
if (writer != null)
{
crypto = writer.Encryption;
}
if (crypto != null)
{
PdfObject filter = Get(PdfName.FILTER);
if (filter != null)
{
if (PdfName.CRYPT.Equals(filter))
{
crypto = null;
}
else if (filter.IsArray())
{
PdfArray a = ((PdfArray)filter);
if (a.Size > 0 && PdfName.CRYPT.Equals(a[0]))
{
crypto = null;
}
}
}
}
PdfObject nn = Get(PdfName.LENGTH);
if (crypto != null && nn != null && nn.IsNumber())
{
int sz = ((PdfNumber)nn).IntValue;
Put(PdfName.LENGTH, new PdfNumber(crypto.CalculateStreamSize(sz)));
SuperToPdf(writer, os);
Put(PdfName.LENGTH, nn);
}
else
{
SuperToPdf(writer, os);
}
PdfWriter.CheckPdfIsoConformance(writer, PdfIsoKeys.PDFISOKEY_STREAM, this);
os.Write(STARTSTREAM, 0, STARTSTREAM.Length);
if (inputStream != null)
{
rawLength = 0;
ZDeflaterOutputStream def = null;
OutputStreamCounter osc = new OutputStreamCounter(os);
OutputStreamEncryption ose = null;
Stream fout = osc;
if (crypto != null && !crypto.IsEmbeddedFilesOnly())
{
fout = ose = crypto.GetEncryptionStream(fout);
}
if (compressed)
{
fout = def = new ZDeflaterOutputStream(fout, compressionLevel);
}
byte[] buf = new byte[4192];
while (true)
{
int n = inputStream.Read(buf, 0, buf.Length);
if (n <= 0)
{
break;
}
fout.Write(buf, 0, n);
rawLength += n;
}
if (def != null)
{
def.Finish();
}
if (ose != null)
{
ose.Finish();
}
inputStreamLength = (int)osc.Counter;
}
else
{
if (crypto != null && !crypto.IsEmbeddedFilesOnly())
{
byte[] b;
if (streamBytes != null)
{
b = crypto.EncryptByteArray(streamBytes.ToArray());
}
else
{
b = crypto.EncryptByteArray(bytes);
}
os.Write(b, 0, b.Length);
}
else
{
if (streamBytes != null)
{
streamBytes.WriteTo(os);
}
else
{
os.Write(bytes, 0, bytes.Length);
}
}
}
os.Write(ENDSTREAM, 0, ENDSTREAM.Length);
}
/**
* Compresses the stream.
* @param compressionLevel the compression level (0 = best speed, 9 = best compression, -1 is default)
* @since 2.1.3
*/
virtual public void FlateCompress(int compressionLevel)
{
if (!Document.Compress)
{
return;
}
// check if the flateCompress-method has already been used
if (compressed)
{
return;
}
this.compressionLevel = compressionLevel;
if (inputStream != null)
{
compressed = true;
return;
}
// check if a filter already exists
PdfObject filter = PdfReader.GetPdfObject(Get(PdfName.FILTER));
if (filter != null)
{
if (filter.IsName())
{
if (PdfName.FLATEDECODE.Equals(filter))
{
return;
}
}
else if (filter.IsArray())
{
if (((PdfArray)filter).Contains(PdfName.FLATEDECODE))
{
return;
}
}
else
{
throw new PdfException(MessageLocalization.GetComposedMessage("stream.could.not.be.compressed.filter.is.not.a.name.or.array"));
}
}
// compress
MemoryStream stream = new MemoryStream();
ZDeflaterOutputStream zip = new ZDeflaterOutputStream(stream, compressionLevel);
if (streamBytes != null)
{
streamBytes.WriteTo(zip);
}
else
{
zip.Write(bytes, 0, bytes.Length);
}
//zip.Close();
zip.Finish();
// update the object
streamBytes = stream;
bytes = null;
Put(PdfName.LENGTH, new PdfNumber(streamBytes.Length));
if (filter == null)
{
Put(PdfName.FILTER, PdfName.FLATEDECODE);
}
else
{
PdfArray filters = new PdfArray(filter);
filters.Add(0, PdfName.FLATEDECODE);
Put(PdfName.FILTER, filters);
}
compressed = true;
}
// constructor
/**
* Constructs a <CODE>PdfContents</CODE>-object, containing text and general graphics.
*
* @param under the direct content that is under all others
* @param content the graphics in a page
* @param text the text in a page
* @param secondContent the direct content that is over all others
* @throws BadPdfFormatException on error
*/
internal PdfContents(PdfContentByte under, PdfContentByte content, PdfContentByte text, PdfContentByte secondContent, Rectangle page) : base()
{
Stream ostr = null;
streamBytes = new MemoryStream();
if (Document.Compress)
{
compressed = true;
ostr = new ZDeflaterOutputStream(streamBytes, text.PdfWriter.CompressionLevel);
}
else
{
ostr = streamBytes;
}
int rotation = page.Rotation;
byte[] tmp;
switch (rotation)
{
case 90:
ostr.Write(ROTATE90, 0, ROTATE90.Length);
tmp = DocWriter.GetISOBytes(ByteBuffer.FormatDouble(page.Top));
ostr.Write(tmp, 0, tmp.Length);
ostr.WriteByte((byte)' ');
ostr.WriteByte((byte)'0');
ostr.Write(ROTATEFINAL, 0, ROTATEFINAL.Length);
break;
case 180:
ostr.Write(ROTATE180, 0, ROTATE180.Length);
tmp = DocWriter.GetISOBytes(ByteBuffer.FormatDouble(page.Right));
ostr.Write(tmp, 0, tmp.Length);
ostr.WriteByte((byte)' ');
tmp = DocWriter.GetISOBytes(ByteBuffer.FormatDouble(page.Top));
ostr.Write(tmp, 0, tmp.Length);
ostr.Write(ROTATEFINAL, 0, ROTATEFINAL.Length);
break;
case 270:
ostr.Write(ROTATE270, 0, ROTATE270.Length);
ostr.WriteByte((byte)'0');
ostr.WriteByte((byte)' ');
tmp = DocWriter.GetISOBytes(ByteBuffer.FormatDouble(page.Right));
ostr.Write(tmp, 0, tmp.Length);
ostr.Write(ROTATEFINAL, 0, ROTATEFINAL.Length);
break;
}
if (under.Size > 0)
{
ostr.Write(SAVESTATE, 0, SAVESTATE.Length);
under.InternalBuffer.WriteTo(ostr);
ostr.Write(RESTORESTATE, 0, RESTORESTATE.Length);
}
if (content.Size > 0)
{
ostr.Write(SAVESTATE, 0, SAVESTATE.Length);
content.InternalBuffer.WriteTo(ostr);
ostr.Write(RESTORESTATE, 0, RESTORESTATE.Length);
}
if (text != null)
{
ostr.Write(SAVESTATE, 0, SAVESTATE.Length);
text.InternalBuffer.WriteTo(ostr);
ostr.Write(RESTORESTATE, 0, RESTORESTATE.Length);
}
if (secondContent.Size > 0)
{
secondContent.InternalBuffer.WriteTo(ostr);
}
if (ostr is ZDeflaterOutputStream)
{
((ZDeflaterOutputStream)ostr).Finish();
}
Put(PdfName.LENGTH, new PdfNumber(streamBytes.Length));
if (compressed)
{
Put(PdfName.FILTER, PdfName.FLATEDECODE);
}
}
/// <summary>
/// methods
/// </summary>
/// <summary>
/// Compresses the stream.
/// @since 2.1.3
/// </summary>
/// <param name="compressionLevel">the compression level (0 = best speed, 9 = best compression, -1 is default)</param>
public void FlateCompress(int compressionLevel)
{
if (!Document.Compress)
{
return;
}
// check if the flateCompress-method has allready been
if (Compressed)
{
return;
}
CompressionLevel = compressionLevel;
if (InputStream != null)
{
Compressed = true;
return;
}
// check if a filter allready exists
PdfObject filter = PdfReader.GetPdfObject(Get(PdfName.Filter));
if (filter != null)
{
if (filter.IsName())
{
if (PdfName.Flatedecode.Equals(filter))
{
return;
}
}
else if (filter.IsArray())
{
if (((PdfArray)filter).Contains(PdfName.Flatedecode))
{
return;
}
}
else
{
throw new PdfException("Stream could not be compressed: filter is not a name or array.");
}
}
// compress
MemoryStream stream = new MemoryStream();
ZDeflaterOutputStream zip = new ZDeflaterOutputStream(stream, compressionLevel);
if (StreamBytes != null)
{
StreamBytes.WriteTo(zip);
}
else
{
zip.Write(Bytes, 0, Bytes.Length);
}
//zip.Close();
zip.Finish();
// update the object
StreamBytes = stream;
Bytes = null;
Put(PdfName.LENGTH, new PdfNumber(StreamBytes.Length));
if (filter == null)
{
Put(PdfName.Filter, PdfName.Flatedecode);
}
else
{
PdfArray filters = new PdfArray(filter);
filters.Add(PdfName.Flatedecode);
Put(PdfName.Filter, filters);
}
Compressed = true;
}
/// <summary>
/// Constructs a PdfContents -object, containing text and general graphics.
/// @throws BadPdfFormatException on error
/// </summary>
/// <param name="under">the direct content that is under all others</param>
/// <param name="content">the graphics in a page</param>
/// <param name="text">the text in a page</param>
/// <param name="secondContent">the direct content that is over all others</param>
/// <param name="page"></param>
internal PdfContents(PdfContentByte under, PdfContentByte content, PdfContentByte text, PdfContentByte secondContent, Rectangle page)
{
Stream ostr = null;
StreamBytes = new MemoryStream();
if (Document.Compress)
{
Compressed = true;
ostr = new ZDeflaterOutputStream(StreamBytes, text.PdfWriter.CompressionLevel);
}
else
{
ostr = StreamBytes;
}
int rotation = page.Rotation;
byte[] tmp;
switch (rotation)
{
case 90:
ostr.Write(Rotate90, 0, Rotate90.Length);
tmp = DocWriter.GetIsoBytes(ByteBuffer.FormatDouble(page.Top));
ostr.Write(tmp, 0, tmp.Length);
ostr.WriteByte((byte)' ');
ostr.WriteByte((byte)'0');
ostr.Write(Rotatefinal, 0, Rotatefinal.Length);
break;
case 180:
ostr.Write(Rotate180, 0, Rotate180.Length);
tmp = DocWriter.GetIsoBytes(ByteBuffer.FormatDouble(page.Right));
ostr.Write(tmp, 0, tmp.Length);
ostr.WriteByte((byte)' ');
tmp = DocWriter.GetIsoBytes(ByteBuffer.FormatDouble(page.Top));
ostr.Write(tmp, 0, tmp.Length);
ostr.Write(Rotatefinal, 0, Rotatefinal.Length);
break;
case 270:
ostr.Write(Rotate270, 0, Rotate270.Length);
ostr.WriteByte((byte)'0');
ostr.WriteByte((byte)' ');
tmp = DocWriter.GetIsoBytes(ByteBuffer.FormatDouble(page.Right));
ostr.Write(tmp, 0, tmp.Length);
ostr.Write(Rotatefinal, 0, Rotatefinal.Length);
break;
}
if (under.Size > 0)
{
ostr.Write(Savestate, 0, Savestate.Length);
under.InternalBuffer.WriteTo(ostr);
ostr.Write(Restorestate, 0, Restorestate.Length);
}
if (content.Size > 0)
{
ostr.Write(Savestate, 0, Savestate.Length);
content.InternalBuffer.WriteTo(ostr);
ostr.Write(Restorestate, 0, Restorestate.Length);
}
if (text != null)
{
ostr.Write(Savestate, 0, Savestate.Length);
text.InternalBuffer.WriteTo(ostr);
ostr.Write(Restorestate, 0, Restorestate.Length);
}
if (secondContent.Size > 0)
{
secondContent.InternalBuffer.WriteTo(ostr);
}
if (ostr is ZDeflaterOutputStream)
{
((ZDeflaterOutputStream)ostr).Finish();
}
Put(PdfName.LENGTH, new PdfNumber(StreamBytes.Length));
if (Compressed)
{
Put(PdfName.Filter, PdfName.Flatedecode);
}
}
public override void ToPdf(PdfWriter writer, Stream os)
{
if (inputStream != null && compressed)
{
Put(PdfName.FILTER, PdfName.FLATEDECODE);
}
SuperToPdf(writer, os);
os.Write(STARTSTREAM, 0, STARTSTREAM.Length);
PdfEncryption crypto = null;
if (writer != null)
{
crypto = writer.Encryption;
}
if (crypto != null)
{
crypto.PrepareKey();
}
if (inputStream != null)
{
rawLength = 0;
ZDeflaterOutputStream def = null;
OutputStreamCounter osc = new OutputStreamCounter(os);
Stream fout = osc;
if (crypto != null)
{
fout = new PdfEncryptionStream(fout, crypto);
}
if (compressed)
{
fout = def = new ZDeflaterOutputStream(fout);
}
byte[] buf = new byte[0x10000];
while (true)
{
int n = inputStream.Read(buf, 0, buf.Length);
if (n <= 0)
{
break;
}
fout.Write(buf, 0, n);
rawLength += n;
}
if (def != null)
{
def.Finish();
}
inputStreamLength = osc.Counter;
}
else
{
if (crypto == null)
{
if (streamBytes != null)
{
streamBytes.WriteTo(os);
}
else
{
os.Write(bytes, 0, bytes.Length);
}
}
else
{
byte[] b;
if (streamBytes != null)
{
b = streamBytes.ToArray();
crypto.EncryptRC4(b);
}
else
{
b = new byte[bytes.Length];
crypto.EncryptRC4(bytes, b);
}
os.Write(b, 0, b.Length);
}
}
os.Write(ENDSTREAM, 0, ENDSTREAM.Length);
}
// methods
/**
* Compresses the stream.
*
* @throws PdfException if a filter is allready defined
*/
public void FlateCompress()
{
if (!Document.Compress)
{
return;
}
// check if the flateCompress-method has allready been
if (compressed)
{
return;
}
if (inputStream != null)
{
compressed = true;
return;
}
// check if a filter allready exists
PdfObject filter = Get(PdfName.FILTER);
if (filter != null)
{
if (filter.IsName() && ((PdfName)filter).CompareTo(PdfName.FLATEDECODE) == 0)
{
return;
}
else if (filter.IsArray() && ((PdfArray)filter).Contains(PdfName.FLATEDECODE))
{
return;
}
else
{
throw new PdfException("Stream could not be compressed: filter is not a name or array.");
}
}
// compress
MemoryStream stream = new MemoryStream();
ZDeflaterOutputStream zip = new ZDeflaterOutputStream(stream);
if (streamBytes != null)
{
streamBytes.WriteTo(zip);
}
else
{
zip.Write(bytes, 0, bytes.Length);
}
//zip.Close();
zip.Finish();
// update the object
streamBytes = stream;
bytes = null;
Put(PdfName.LENGTH, new PdfNumber(streamBytes.Length));
if (filter == null)
{
Put(PdfName.FILTER, PdfName.FLATEDECODE);
}
else
{
PdfArray filters = new PdfArray(filter);
filters.Add(PdfName.FLATEDECODE);
Put(PdfName.FILTER, filters);
}
compressed = true;
}
public override void ToPdf(PdfWriter writer, Stream os)
{
if (InputStream != null && Compressed)
{
Put(PdfName.Filter, PdfName.Flatedecode);
}
PdfEncryption crypto = null;
if (writer != null)
{
crypto = writer.Encryption;
}
if (crypto != null)
{
PdfObject filter = Get(PdfName.Filter);
if (filter != null)
{
if (PdfName.Crypt.Equals(filter))
{
crypto = null;
}
else if (filter.IsArray())
{
PdfArray a = ((PdfArray)filter);
if (a.Size > 0 && PdfName.Crypt.Equals(a[0]))
{
crypto = null;
}
}
}
}
PdfObject nn = Get(PdfName.LENGTH);
if (crypto != null && nn != null && nn.IsNumber())
{
int sz = ((PdfNumber)nn).IntValue;
Put(PdfName.LENGTH, new PdfNumber(crypto.CalculateStreamSize(sz)));
SuperToPdf(writer, os);
Put(PdfName.LENGTH, nn);
}
else
{
SuperToPdf(writer, os);
}
os.Write(Startstream, 0, Startstream.Length);
if (InputStream != null)
{
rawLength = 0;
ZDeflaterOutputStream def = null;
OutputStreamCounter osc = new OutputStreamCounter(os);
OutputStreamEncryption ose = null;
Stream fout = osc;
if (crypto != null && !crypto.IsEmbeddedFilesOnly())
{
fout = ose = crypto.GetEncryptionStream(fout);
}
if (Compressed)
{
fout = def = new ZDeflaterOutputStream(fout, CompressionLevel);
}
byte[] buf = new byte[4192];
while (true)
{
int n = InputStream.Read(buf, 0, buf.Length);
if (n <= 0)
{
break;
}
fout.Write(buf, 0, n);
rawLength += n;
}
if (def != null)
{
def.Finish();
}
if (ose != null)
{
ose.Finish();
}
InputStreamLength = osc.Counter;
}
else
{
if (crypto != null && !crypto.IsEmbeddedFilesOnly())
{
byte[] b;
if (StreamBytes != null)
{
b = crypto.EncryptByteArray(StreamBytes.ToArray());
}
else
{
b = crypto.EncryptByteArray(Bytes);
}
os.Write(b, 0, b.Length);
}
else
{
if (StreamBytes != null)
{
StreamBytes.WriteTo(os);
}
else
{
os.Write(Bytes, 0, Bytes.Length);
}
}
}
os.Write(Endstream, 0, Endstream.Length);
}
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);
}
