bool writeBufferToSeparateTiles(Tiff outImage, byte[] buf, int imagelength, int imagewidth, short spp)
{
byte[] obuf = new byte[outImage.TileSize()];
FieldValue[] result = outImage.GetField(TiffTag.TILELENGTH);
int tl = result[0].ToInt();
result = outImage.GetField(TiffTag.TILEWIDTH);
int tw = result[0].ToInt();
result = outImage.GetField(TiffTag.BITSPERSAMPLE);
short bps = result[0].ToShort();
Debug.Assert(bps % 8 == 0);
short bytes_per_sample = (short)(bps / 8);
int imagew = outImage.ScanlineSize();
int tilew = outImage.TileRowSize();
int iimagew = outImage.RasterScanlineSize();
int iskew = iimagew - tilew * spp;
int bufp = 0;
for (int row = 0; row < imagelength; row += tl)
{
int nrow = (row + tl > imagelength) ? imagelength - row : tl;
int colb = 0;
for (int col = 0; col < imagewidth; col += tw)
{
for (short s = 0; s < spp; s++)
{
/*
* Tile is clipped horizontally. Calculate
* visible portion and skewing factors.
*/
if (colb + tilew > imagew)
{
int width = imagew - colb;
int oskew = tilew - width;
cpContigBufToSeparateBuf(obuf, buf, bufp + (colb * spp) + s, nrow, width / bytes_per_sample, oskew, (oskew * spp) + iskew, spp, bytes_per_sample);
}
else
cpContigBufToSeparateBuf(obuf, buf, bufp + (colb * spp) + s, nrow, m_tilewidth, 0, iskew, spp, bytes_per_sample);
if (outImage.WriteTile(obuf, col, row, 0, s) < 0)
{
Tiff.Error(outImage.FileName(), "Error, can't write tile at {0} {1} sample {2}", col, row, s);
return false;
}
}
colb += tilew;
}
bufp += nrow * iimagew;
}
return true;
}
bool writeBufferToContigTiles(Tiff outImage, byte[] buf, int imagelength, int imagewidth, short spp)
{
byte[] obuf = new byte[outImage.TileSize()];
FieldValue[] result = outImage.GetField(TiffTag.TILELENGTH);
int tl = result[0].ToInt();
result = outImage.GetField(TiffTag.TILEWIDTH);
int tw = result[0].ToInt();
int imagew = outImage.ScanlineSize();
int tilew = outImage.TileRowSize();
int iskew = imagew - tilew;
int bufp = 0;
for (int row = 0; row < imagelength; row += m_tilelength)
{
int nrow = (row + tl > imagelength) ? imagelength - row : tl;
int colb = 0;
for (int col = 0; col < imagewidth; col += tw)
{
/*
* Tile is clipped horizontally. Calculate
* visible portion and skewing factors.
*/
if (colb + tilew > imagew)
{
int width = imagew - colb;
int oskew = tilew - width;
cpStripToTile(obuf, 0, buf, bufp + colb, nrow, width, oskew, oskew + iskew);
}
else
cpStripToTile(obuf, 0, buf, bufp + colb, nrow, tilew, 0, iskew);
if (outImage.WriteTile(obuf, col, row, 0, 0) < 0)
{
Tiff.Error(outImage.FileName(), "Error, can't write tile at {0} {1}", col, row);
return false;
}
colb += tilew;
}
bufp += nrow * imagew;
}
return true;
}
bool readSeparateTilesIntoBuffer(Tiff inImage, byte[] buf, int imagelength, int imagewidth, short spp)
{
byte[] tilebuf = new byte[inImage.TileSize()];
FieldValue[] result = inImage.GetField(TiffTag.TILEWIDTH);
int tw = result[0].ToInt();
result = inImage.GetField(TiffTag.TILELENGTH);
int tl = result[0].ToInt();
result = inImage.GetField(TiffTag.BITSPERSAMPLE);
short bps = result[0].ToShort();
Debug.Assert(bps % 8 == 0);
short bytes_per_sample = (short)(bps / 8);
int imagew = inImage.RasterScanlineSize();
int tilew = inImage.TileRowSize();
int iskew = imagew - tilew * spp;
int bufp = 0;
for (int row = 0; row < imagelength; row += tl)
{
int nrow = (row + tl > imagelength) ? imagelength - row : tl;
int colb = 0;
for (int col = 0; col < imagewidth; col += tw)
{
for (short s = 0; s < spp; s++)
{
if (inImage.ReadTile(tilebuf, 0, col, row, 0, s) < 0 && !m_ignore)
{
Tiff.Error(inImage.FileName(), "Error, can't read tile at {0} {1}, sample {2}", col, row, s);
return false;
}
/*
* Tile is clipped horizontally. Calculate
* visible portion and skewing factors.
*/
if (colb + tilew * spp > imagew)
{
int width = imagew - colb;
int oskew = tilew * spp - width;
cpSeparateBufToContigBuf(buf, bufp + colb + s * bytes_per_sample, tilebuf, nrow, width / (spp * bytes_per_sample), oskew + iskew, oskew / spp, spp, bytes_per_sample);
}
else
cpSeparateBufToContigBuf(buf, bufp + colb + s * bytes_per_sample, tilebuf, nrow, tw, iskew, 0, spp, bytes_per_sample);
}
colb += tilew * spp;
}
bufp += imagew * nrow;
}
return true;
}
bool readContigTilesIntoBuffer(Tiff inImage, byte[] buf, int imagelength, int imagewidth, short spp)
{
byte[] tilebuf = new byte[inImage.TileSize()];
FieldValue[] result = inImage.GetField(TiffTag.TILEWIDTH);
int tw = result[0].ToInt();
result = inImage.GetField(TiffTag.TILELENGTH);
int tl = result[0].ToInt();
int imagew = inImage.ScanlineSize();
int tilew = inImage.TileRowSize();
int iskew = imagew - tilew;
int bufp = 0;
for (int row = 0; row < imagelength; row += tl)
{
int nrow = (row + tl > imagelength) ? imagelength - row : tl;
int colb = 0;
for (int col = 0; col < imagewidth; col += tw)
{
if (inImage.ReadTile(tilebuf, 0, col, row, 0, 0) < 0 && !m_ignore)
{
Tiff.Error(inImage.FileName(), "Error, can't read tile at {0} {1}", col, row);
return false;
}
if (colb + tilew > imagew)
{
int width = imagew - colb;
int oskew = tilew - width;
cpStripToTile(buf, bufp + colb, tilebuf, 0, nrow, width, oskew + iskew, oskew);
}
else
cpStripToTile(buf, bufp + colb, tilebuf, 0, nrow, tilew, iskew, 0);
colb += tilew;
}
bufp += imagew * nrow;
}
return true;
}
/*
* This function reads the raster image data from the input TIFF for an image
* tile and writes the data to the output PDF XObject image dictionary stream
* for the tile. It returns the amount written or zero on error.
*/
private int readwrite_pdf_image_tile(Tiff input, int tile)
{
bool edge = false;
edge |= tile_is_right_edge(m_tiff_pages[m_pdf_page], tile);
edge |= tile_is_bottom_edge(m_tiff_pages[m_pdf_page], tile);
byte[] buffer = null;
int bufferoffset = 0;
FieldValue[] result = null;
if ((m_pdf_transcode == t2p_transcode_t.T2P_TRANSCODE_RAW) && (!edge || (m_pdf_compression == t2p_compress_t.T2P_COMPRESS_JPEG)))
{
if (m_pdf_compression == t2p_compress_t.T2P_COMPRESS_G4)
{
buffer = new byte [m_tiff_datasize];
input.ReadRawTile(tile, buffer, 0, m_tiff_datasize);
if (m_tiff_fillorder == FillOrder.LSB2MSB)
Tiff.ReverseBits(buffer, m_tiff_datasize);
writeToFile(buffer, m_tiff_datasize);
return m_tiff_datasize;
}
if (m_pdf_compression == t2p_compress_t.T2P_COMPRESS_ZIP)
{
buffer = new byte [m_tiff_datasize];
input.ReadRawTile(tile, buffer, 0, m_tiff_datasize);
if (m_tiff_fillorder == FillOrder.LSB2MSB)
Tiff.ReverseBits(buffer, m_tiff_datasize);
writeToFile(buffer, m_tiff_datasize);
return m_tiff_datasize;
}
if (m_tiff_compression == Compression.JPEG)
{
byte[] table_end = new byte[2];
buffer = new byte [m_tiff_datasize];
result = input.GetField(TiffTag.JPEGTABLES);
if (result != null)
{
int count = result[0].ToInt();
byte[] jpt = result[1].ToByteArray();
if (count > 0)
{
Buffer.BlockCopy(jpt, 0, buffer, 0, count);
bufferoffset += count - 2;
table_end[0] = buffer[bufferoffset - 2];
table_end[1] = buffer[bufferoffset - 1];
}
if (count > 0)
{
int xuint32 = bufferoffset;
bufferoffset += input.ReadRawTile(tile, buffer, bufferoffset - 2, -1);
buffer[xuint32 - 2] = table_end[0];
buffer[xuint32 - 1] = table_end[1];
}
else
{
bufferoffset += input.ReadRawTile(tile, buffer, bufferoffset, -1);
}
}
writeToFile(buffer, bufferoffset);
return bufferoffset;
}
}
if (m_pdf_sample == t2p_sample_t.T2P_SAMPLE_NOTHING)
{
buffer = new byte [m_tiff_datasize];
int read = input.ReadEncodedTile(tile, buffer, bufferoffset, m_tiff_datasize);
if (read == -1)
{
Tiff.Error(Tiff2PdfConstants.TIFF2PDF_MODULE,
"Error on decoding tile {0} of {1}", tile, input.FileName());
m_error = true;
return 0;
}
}
else
{
if (m_pdf_sample == t2p_sample_t.T2P_SAMPLE_PLANAR_SEPARATE_TO_CONTIG)
{
int septilesize = input.TileSize();
int septilecount = input.NumberOfTiles();
int tilecount = septilecount / m_tiff_samplesperpixel;
buffer = new byte [m_tiff_datasize];
byte[] samplebuffer = new byte [m_tiff_datasize];
int samplebufferoffset = 0;
for (short i = 0; i < m_tiff_samplesperpixel; i++)
{
int read = input.ReadEncodedTile(tile + i * tilecount, samplebuffer, samplebufferoffset, septilesize);
if (read == -1)
{
Tiff.Error(Tiff2PdfConstants.TIFF2PDF_MODULE,
"Error on decoding tile {0} of {1}",
tile + i * tilecount, input.FileName());
m_error = true;
return 0;
}
samplebufferoffset += read;
}
sample_planar_separate_to_contig(buffer, bufferoffset, samplebuffer, samplebufferoffset);
bufferoffset += samplebufferoffset;
}
if (buffer == null)
{
buffer = new byte [m_tiff_datasize];
int read = input.ReadEncodedTile(tile, buffer, bufferoffset, m_tiff_datasize);
if (read == -1)
{
Tiff.Error(Tiff2PdfConstants.TIFF2PDF_MODULE,
"Error on decoding tile {0} of {1}",
tile, input.FileName());
m_error = true;
return 0;
}
}
if ((m_pdf_sample & t2p_sample_t.T2P_SAMPLE_RGBA_TO_RGB) != 0)
m_tiff_datasize = sample_rgba_to_rgb(buffer, m_tiff_pages[m_pdf_page].tiles_tilewidth * m_tiff_pages[m_pdf_page].tiles_tilelength);
if ((m_pdf_sample & t2p_sample_t.T2P_SAMPLE_RGBAA_TO_RGB) != 0)
m_tiff_datasize = sample_rgbaa_to_rgb(buffer, m_tiff_pages[m_pdf_page].tiles_tilewidth * m_tiff_pages[m_pdf_page].tiles_tilelength);
if ((m_pdf_sample & t2p_sample_t.T2P_SAMPLE_YCBCR_TO_RGB) != 0)
{
Tiff.Error(Tiff2PdfConstants.TIFF2PDF_MODULE,
"No support for YCbCr to RGB in tile for {0}", input.FileName());
m_error = true;
return 0;
}
if ((m_pdf_sample & t2p_sample_t.T2P_SAMPLE_LAB_SIGNED_TO_UNSIGNED) != 0)
m_tiff_datasize = sample_lab_signed_to_unsigned(buffer, m_tiff_pages[m_pdf_page].tiles_tilewidth * m_tiff_pages[m_pdf_page].tiles_tilelength);
}
if (tile_is_right_edge(m_tiff_pages[m_pdf_page], tile))
tile_collapse_left(buffer, input.TileRowSize(), m_tiff_pages[m_pdf_page].tiles_tilewidth, m_tiff_pages[m_pdf_page].tiles_edgetilewidth, m_tiff_pages[m_pdf_page].tiles_tilelength);
disable(m_output);
m_output.SetField(TiffTag.PHOTOMETRIC, m_tiff_photometric);
m_output.SetField(TiffTag.BITSPERSAMPLE, m_tiff_bitspersample);
m_output.SetField(TiffTag.SAMPLESPERPIXEL, m_tiff_samplesperpixel);
if (!tile_is_right_edge(m_tiff_pages[m_pdf_page], tile))
m_output.SetField(TiffTag.IMAGEWIDTH, m_tiff_pages[m_pdf_page].tiles_tilewidth);
else
m_output.SetField(TiffTag.IMAGEWIDTH, m_tiff_pages[m_pdf_page].tiles_edgetilewidth);
if (!tile_is_bottom_edge(m_tiff_pages[m_pdf_page], tile))
{
m_output.SetField(TiffTag.IMAGELENGTH, m_tiff_pages[m_pdf_page].tiles_tilelength);
m_output.SetField(TiffTag.ROWSPERSTRIP, m_tiff_pages[m_pdf_page].tiles_tilelength);
}
else
{
m_output.SetField(TiffTag.IMAGELENGTH, m_tiff_pages[m_pdf_page].tiles_edgetilelength);
m_output.SetField(TiffTag.ROWSPERSTRIP, m_tiff_pages[m_pdf_page].tiles_edgetilelength);
}
m_output.SetField(TiffTag.PLANARCONFIG, PlanarConfig.CONTIG);
m_output.SetField(TiffTag.FILLORDER, FillOrder.MSB2LSB);
switch (m_pdf_compression)
{
case t2p_compress_t.T2P_COMPRESS_NONE:
m_output.SetField(TiffTag.COMPRESSION, Compression.NONE);
break;
case t2p_compress_t.T2P_COMPRESS_G4:
m_output.SetField(TiffTag.COMPRESSION, Compression.CCITTFAX4);
break;
case t2p_compress_t.T2P_COMPRESS_JPEG:
if (m_tiff_photometric == Photometric.YCBCR)
{
result = input.GetField(TiffTag.YCBCRSUBSAMPLING);
if (result != null)
{
short hor = result[0].ToShort();
short ver = result[1].ToShort();
if (hor != 0 && ver != 0)
m_output.SetField(TiffTag.YCBCRSUBSAMPLING, hor, ver);
}
result = input.GetField(TiffTag.REFERENCEBLACKWHITE);
if (result != null)
{
float[] xfloatp = result[0].ToFloatArray();
m_output.SetField(TiffTag.REFERENCEBLACKWHITE, xfloatp);
}
}
m_output.SetField(TiffTag.COMPRESSION, Compression.JPEG);
m_output.SetField(TiffTag.JPEGTABLESMODE, 0); /* JpegTablesMode.NONE */
if ((m_pdf_colorspace & (t2p_cs_t.T2P_CS_RGB | t2p_cs_t.T2P_CS_LAB)) != 0)
{
m_output.SetField(TiffTag.PHOTOMETRIC, Photometric.YCBCR);
if (m_tiff_photometric != Photometric.YCBCR)
m_output.SetField(TiffTag.JPEGCOLORMODE, JpegColorMode.RGB);
else
m_output.SetField(TiffTag.JPEGCOLORMODE, JpegColorMode.RAW);
}
if (m_pdf_defaultcompressionquality != 0)
m_output.SetField(TiffTag.JPEGQUALITY, m_pdf_defaultcompressionquality);
break;
case t2p_compress_t.T2P_COMPRESS_ZIP:
m_output.SetField(TiffTag.COMPRESSION, Compression.DEFLATE);
if (m_pdf_defaultcompressionquality % 100 != 0)
m_output.SetField(TiffTag.PREDICTOR, m_pdf_defaultcompressionquality % 100);
if (m_pdf_defaultcompressionquality / 100 != 0)
m_output.SetField(TiffTag.ZIPQUALITY, (m_pdf_defaultcompressionquality / 100));
break;
default:
break;
}
enable(m_output);
m_outputwritten = 0;
bufferoffset = m_output.WriteEncodedStrip(0, buffer, m_output.StripSize());
buffer = null;
if (bufferoffset == -1)
{
Tiff.Error(Tiff2PdfConstants.TIFF2PDF_MODULE,
"Error writing encoded tile to output PDF {0}", m_output.FileName());
m_error = true;
return 0;
}
return m_outputwritten;
}
/*
This function returns the necessary size of a data buffer to contain the raw or
uncompressed image data from the input TIFF for a tile of a page.
*/
private void read_tiff_size_tile(Tiff input, int tile)
{
bool edge = false;
edge |= tile_is_right_edge(m_tiff_pages[m_pdf_page], tile);
edge |= tile_is_bottom_edge(m_tiff_pages[m_pdf_page], tile);
if (m_pdf_transcode == t2p_transcode_t.T2P_TRANSCODE_RAW)
{
if (edge && m_pdf_compression != t2p_compress_t.T2P_COMPRESS_JPEG)
{
m_tiff_datasize = input.TileSize();
return;
}
else
{
FieldValue[] result = input.GetField(TiffTag.TILEBYTECOUNTS);
int[] tbc = result[0].ToIntArray();
m_tiff_datasize = tbc[tile];
if (m_tiff_compression == Compression.JPEG)
{
result = input.GetField(TiffTag.JPEGTABLES);
if (result != null)
{
int count = result[0].ToInt();
if (count > 4)
{
m_tiff_datasize += count;
m_tiff_datasize -= 4; /* don't use EOI of header or SOI of tile */
}
}
}
return;
}
}
m_tiff_datasize = input.TileSize();
if (m_tiff_planar == PlanarConfig.SEPARATE)
m_tiff_datasize *= m_tiff_samplesperpixel;
}