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Diffstat (limited to 'sdext/source/pdfimport/xpdfwrapper/pnghelper.cxx')
-rw-r--r--sdext/source/pdfimport/xpdfwrapper/pnghelper.cxx80
1 files changed, 40 insertions, 40 deletions
diff --git a/sdext/source/pdfimport/xpdfwrapper/pnghelper.cxx b/sdext/source/pdfimport/xpdfwrapper/pnghelper.cxx
index a28a676bcf79..8bf3952eb8d0 100644
--- a/sdext/source/pdfimport/xpdfwrapper/pnghelper.cxx
+++ b/sdext/source/pdfimport/xpdfwrapper/pnghelper.cxx
@@ -16,12 +16,12 @@
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
+ *
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
@@ -44,10 +44,10 @@ using namespace pdfi;
/* Table of CRCs of all 8-bit messages. */
sal_uInt32 PngHelper::crc_table[256];
-
+
/* Flag: has the table been computed? Initially false. */
bool PngHelper::bCRCTableInit = true;
-
+
/* Make the table for a fast CRC. */
void PngHelper::initCRCTable()
{
@@ -65,7 +65,7 @@ void PngHelper::initCRCTable()
}
bCRCTableInit = false;
}
-
+
/* Update a running CRC with the bytes buf[0..len-1]--the CRC
should be initialized to all 1's, and the transmitted value
is the 1's complement of the final running CRC (see the
@@ -75,7 +75,7 @@ void PngHelper::updateCRC( sal_uInt32& io_rCRC, const sal_uInt8* i_pBuf, size_t
{
if( bCRCTableInit )
initCRCTable();
-
+
sal_uInt32 nCRC = io_rCRC;
for( size_t n = 0; n < i_nLen; n++ )
nCRC = crc_table[(nCRC ^ i_pBuf[n]) & 0xff] ^ (nCRC >> 8);
@@ -92,7 +92,7 @@ sal_uInt32 PngHelper::getCRC( const sal_uInt8* i_pBuf, size_t i_nLen )
sal_uInt32 PngHelper::deflateBuffer( const Output_t* i_pBuf, size_t i_nLen, OutputBuffer& o_rOut )
{
size_t nOrigSize = o_rOut.size();
-
+
// prepare z stream
z_stream aStream;
aStream.zalloc = Z_NULL;
@@ -101,7 +101,7 @@ sal_uInt32 PngHelper::deflateBuffer( const Output_t* i_pBuf, size_t i_nLen, Outp
deflateInit( &aStream, Z_BEST_COMPRESSION );
aStream.avail_in = uInt(i_nLen);
aStream.next_in = (Bytef*)i_pBuf;
-
+
sal_uInt8 aOutBuf[ 32768 ];
do
{
@@ -115,17 +115,17 @@ sal_uInt32 PngHelper::deflateBuffer( const Output_t* i_pBuf, size_t i_nLen, Outp
o_rOut.resize( nOrigSize );
return 0;
}
-
+
// append compressed bytes
sal_uInt32 nCompressedBytes = sizeof( aOutBuf ) - aStream.avail_out;
if( nCompressedBytes )
o_rOut.insert( o_rOut.end(), aOutBuf, aOutBuf+nCompressedBytes );
} while( aStream.avail_out == 0 );
-
+
// cleanup
deflateEnd( &aStream );
-
+
return sal_uInt32( o_rOut.size() - nOrigSize );
}
@@ -159,12 +159,12 @@ void PngHelper::endChunk( size_t nStart, OutputBuffer& o_rOutputBuf )
{
if( nStart+8 > o_rOutputBuf.size() )
return; // something broken is going on
-
+
// update chunk length
size_t nLen = o_rOutputBuf.size() - nStart;
sal_uInt32 nDataLen = sal_uInt32(nLen)-8;
set( nDataLen, o_rOutputBuf, nStart );
-
+
// append chunk crc
sal_uInt32 nChunkCRC = getCRC( (sal_uInt8*)&o_rOutputBuf[nStart+4], nLen-4 );
append( nChunkCRC, o_rOutputBuf );
@@ -186,7 +186,7 @@ void PngHelper::appendIHDR( OutputBuffer& o_rOutputBuf, int width, int height, i
void PngHelper::appendIEND( OutputBuffer& o_rOutputBuf )
{
size_t nStart = startChunk( "IEND", o_rOutputBuf );
- endChunk( nStart, o_rOutputBuf );
+ endChunk( nStart, o_rOutputBuf );
}
void PngHelper::createPng( OutputBuffer& o_rOutputBuf,
@@ -200,8 +200,8 @@ void PngHelper::createPng( OutputBuffer& o_rOutputBuf,
{
appendFileHeader( o_rOutputBuf );
appendIHDR( o_rOutputBuf, width, height, 1, 3 );
-
- // write palette
+
+ // write palette
size_t nIdx = startChunk( "PLTE", o_rOutputBuf );
// write colors 0 and 1
o_rOutputBuf.push_back(colToByte(zeroColor.r));
@@ -212,7 +212,7 @@ void PngHelper::createPng( OutputBuffer& o_rOutputBuf,
o_rOutputBuf.push_back(colToByte(oneColor.b));
// end PLTE chunk
endChunk( nIdx, o_rOutputBuf );
-
+
if( bIsMask )
{
// write tRNS chunk
@@ -236,14 +236,14 @@ void PngHelper::createPng( OutputBuffer& o_rOutputBuf,
for( int x = 0; x < nLineSize; x++ )
aScanlines.push_back( str->getChar() );
}
-
+
// begin IDAT chunk for scanline data
nIdx = startChunk( "IDAT", o_rOutputBuf );
// compress scanlines
- deflateBuffer( &aScanlines[0], aScanlines.size(), o_rOutputBuf );
+ deflateBuffer( &aScanlines[0], aScanlines.size(), o_rOutputBuf );
// end IDAT chunk
endChunk( nIdx, o_rOutputBuf );
-
+
// output IEND
appendIEND( o_rOutputBuf );
}
@@ -256,14 +256,14 @@ void PngHelper::createPng( OutputBuffer& o_rOutputBuf,
{
appendFileHeader( o_rOutputBuf );
appendIHDR( o_rOutputBuf, width, height, 8, 6 ); // RGBA image
-
+
// initialize stream
Guchar *p, *pm;
GfxRGB rgb;
GfxGray alpha;
ImageStream* imgStr =
- new ImageStream(str,
- width,
+ new ImageStream(str,
+ width,
colorMap->getNumPixelComps(),
colorMap->getBits());
imgStr->reset();
@@ -272,34 +272,34 @@ void PngHelper::createPng( OutputBuffer& o_rOutputBuf,
OutputBuffer aScanlines;
aScanlines.reserve( width*height*4 + height );
- for( int y=0; y<height; ++y)
+ for( int y=0; y<height; ++y)
{
aScanlines.push_back( 0 );
p = imgStr->getLine();
- for( int x=0; x<width; ++x)
+ for( int x=0; x<width; ++x)
{
colorMap->getRGB(p, &rgb);
aScanlines.push_back(colToByte(rgb.r));
aScanlines.push_back(colToByte(rgb.g));
aScanlines.push_back(colToByte(rgb.b));
aScanlines.push_back( 0xff );
-
+
p +=colorMap->getNumPixelComps();
}
}
// now fill in the mask data
-
+
// CAUTION: originally this was done in one single loop
// it caused merry chaos; the reason is that maskStr and str are
// not independent streams, it happens that reading one advances
// the other, too. Hence the two passes are imperative !
-
+
// initialize mask stream
ImageStream* imgStrMask =
- new ImageStream(maskStr,
- maskWidth,
+ new ImageStream(maskStr,
+ maskWidth,
maskColorMap->getNumPixelComps(),
maskColorMap->getBits());
@@ -320,7 +320,7 @@ void PngHelper::createPng( OutputBuffer& o_rOutputBuf,
delete imgStr;
delete imgStrMask;
-
+
// begind IDAT chunk for scanline data
size_t nIdx = startChunk( "IDAT", o_rOutputBuf );
// compress scanlines
@@ -342,13 +342,13 @@ void PngHelper::createPng( OutputBuffer& o_rOutputBuf,
{
appendFileHeader( o_rOutputBuf );
appendIHDR( o_rOutputBuf, width, height, 8, 6 ); // RGBA image
-
+
// initialize stream
Guchar *p;
GfxRGB rgb;
ImageStream* imgStr =
- new ImageStream(str,
- width,
+ new ImageStream(str,
+ width,
colorMap->getNumPixelComps(),
colorMap->getBits());
imgStr->reset();
@@ -357,30 +357,30 @@ void PngHelper::createPng( OutputBuffer& o_rOutputBuf,
OutputBuffer aScanlines;
aScanlines.reserve( width*height*4 + height );
- for( int y=0; y<height; ++y)
+ for( int y=0; y<height; ++y)
{
aScanlines.push_back( 0 );
p = imgStr->getLine();
- for( int x=0; x<width; ++x)
+ for( int x=0; x<width; ++x)
{
colorMap->getRGB(p, &rgb);
aScanlines.push_back(colToByte(rgb.r));
aScanlines.push_back(colToByte(rgb.g));
aScanlines.push_back(colToByte(rgb.b));
aScanlines.push_back( 0xff );
-
+
p +=colorMap->getNumPixelComps();
}
}
// now fill in the mask data
-
+
// CAUTION: originally this was done in one single loop
// it caused merry chaos; the reason is that maskStr and str are
// not independent streams, it happens that reading one advances
// the other, too. Hence the two passes are imperative !
-
+
// initialize mask stream
ImageStream* imgStrMask =
new ImageStream(maskStr, maskWidth, 1, 1);
@@ -404,7 +404,7 @@ void PngHelper::createPng( OutputBuffer& o_rOutputBuf,
delete imgStr;
delete imgStrMask;
-
+
// begind IDAT chunk for scanline data
size_t nIdx = startChunk( "IDAT", o_rOutputBuf );
// compress scanlines
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-25 08:32:51 +0000