summaryrefslogtreecommitdiffstats
path: root/kimgio/pcx.cpp
diff options
context:
space:
mode:
authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commitce4a32fe52ef09d8f5ff1dd22c001110902b60a2 (patch)
tree5ac38a06f3dde268dc7927dc155896926aaf7012 /kimgio/pcx.cpp
downloadtdelibs-ce4a32fe52ef09d8f5ff1dd22c001110902b60a2.tar.gz
tdelibs-ce4a32fe52ef09d8f5ff1dd22c001110902b60a2.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'kimgio/pcx.cpp')
-rw-r--r--kimgio/pcx.cpp534
1 files changed, 534 insertions, 0 deletions
diff --git a/kimgio/pcx.cpp b/kimgio/pcx.cpp
new file mode 100644
index 000000000..867829eb6
--- /dev/null
+++ b/kimgio/pcx.cpp
@@ -0,0 +1,534 @@
+/* This file is part of the KDE project
+ Copyright (C) 2002-2005 Nadeem Hasan <nhasan@kde.org>
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License (LGPL) as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+*/
+
+#include "pcx.h"
+
+#include <qimage.h>
+
+#include <kdebug.h>
+
+static QDataStream &operator>>( QDataStream &s, RGB &rgb )
+{
+ s >> rgb.r >> rgb.g >> rgb.b;
+
+ return s;
+}
+
+static QDataStream &operator>>( QDataStream &s, Palette &pal )
+{
+ for ( int i=0; i<16; ++i )
+ s >> pal.rgb[ i ];
+
+ return s;
+}
+
+static QDataStream &operator>>( QDataStream &s, PCXHEADER &ph )
+{
+ s >> ph.Manufacturer;
+ s >> ph.Version;
+ s >> ph.Encoding;
+ s >> ph.Bpp;
+ s >> ph.XMin >> ph.YMin >> ph.XMax >> ph.YMax;
+ s >> ph.HDpi >> ph.YDpi;
+ s >> ph.ColorMap;
+ s >> ph.Reserved;
+ s >> ph.NPlanes;
+ s >> ph.BytesPerLine;
+ s >> ph.PaletteInfo;
+ s >> ph.HScreenSize;
+ s >> ph.VScreenSize;
+
+ // Skip the rest of the header
+ Q_UINT8 byte;
+ while ( s.device()->at() < 128 )
+ s >> byte;
+
+ return s;
+}
+
+static QDataStream &operator<<( QDataStream &s, const RGB &rgb )
+{
+ s << rgb.r << rgb.g << rgb.b;
+
+ return s;
+}
+
+static QDataStream &operator<<( QDataStream &s, const Palette &pal )
+{
+ for ( int i=0; i<16; ++i )
+ s << pal.rgb[ i ];
+
+ return s;
+}
+
+static QDataStream &operator<<( QDataStream &s, const PCXHEADER &ph )
+{
+ s << ph.Manufacturer;
+ s << ph.Version;
+ s << ph.Encoding;
+ s << ph.Bpp;
+ s << ph.XMin << ph.YMin << ph.XMax << ph.YMax;
+ s << ph.HDpi << ph.YDpi;
+ s << ph.ColorMap;
+ s << ph.Reserved;
+ s << ph.NPlanes;
+ s << ph.BytesPerLine;
+ s << ph.PaletteInfo;
+ s << ph.HScreenSize;
+ s << ph.VScreenSize;
+
+ Q_UINT8 byte = 0;
+ for ( int i=0; i<54; ++i )
+ s << byte;
+
+ return s;
+}
+
+PCXHEADER::PCXHEADER()
+{
+ // Initialize all data to zero
+ QByteArray dummy( 128 );
+ dummy.fill( 0 );
+ QDataStream s( dummy, IO_ReadOnly );
+ s >> *this;
+}
+
+static void readLine( QDataStream &s, QByteArray &buf, const PCXHEADER &header )
+{
+ Q_UINT32 i=0;
+ Q_UINT32 size = buf.size();
+ Q_UINT8 byte, count;
+
+ if ( header.isCompressed() )
+ {
+ // Uncompress the image data
+ while ( i < size )
+ {
+ count = 1;
+ s >> byte;
+ if ( byte > 0xc0 )
+ {
+ count = byte - 0xc0;
+ s >> byte;
+ }
+ while ( count-- && i < size )
+ buf[ i++ ] = byte;
+ }
+ }
+ else
+ {
+ // Image is not compressed (possible?)
+ while ( i < size )
+ {
+ s >> byte;
+ buf[ i++ ] = byte;
+ }
+ }
+}
+
+static void readImage1( QImage &img, QDataStream &s, const PCXHEADER &header )
+{
+ QByteArray buf( header.BytesPerLine );
+
+ if(!img.create( header.width(), header.height(), 1, 2, QImage::BigEndian ))
+ return;
+
+ for ( int y=0; y<header.height(); ++y )
+ {
+ if ( s.atEnd() )
+ {
+ img.reset();
+ return;
+ }
+
+ readLine( s, buf, header );
+ uchar *p = img.scanLine( y );
+ unsigned int bpl = QMIN((header.width()+7)/8, header.BytesPerLine);
+ for ( unsigned int x=0; x< bpl; ++x )
+ p[ x ] = buf[x];
+ }
+
+ // Set the color palette
+ img.setColor( 0, qRgb( 0, 0, 0 ) );
+ img.setColor( 1, qRgb( 255, 255, 255 ) );
+}
+
+static void readImage4( QImage &img, QDataStream &s, const PCXHEADER &header )
+{
+ QByteArray buf( header.BytesPerLine*4 );
+ QByteArray pixbuf( header.width() );
+
+ if(!img.create( header.width(), header.height(), 8, 16 ))
+ return;
+
+ for ( int y=0; y<header.height(); ++y )
+ {
+ if ( s.atEnd() )
+ {
+ img.reset();
+ return;
+ }
+
+ pixbuf.fill( 0 );
+ readLine( s, buf, header );
+
+ for ( int i=0; i<4; i++ )
+ {
+ Q_UINT32 offset = i*header.BytesPerLine;
+ for ( unsigned int x=0; x<header.width(); ++x )
+ if ( buf[ offset + ( x/8 ) ] & ( 128 >> ( x%8 ) ) )
+ pixbuf[ x ] += ( 1 << i );
+ }
+
+ uchar *p = img.scanLine( y );
+ for ( unsigned int x=0; x<header.width(); ++x )
+ p[ x ] = pixbuf[ x ];
+ }
+
+ // Read the palette
+ for ( int i=0; i<16; ++i )
+ img.setColor( i, header.ColorMap.color( i ) );
+}
+
+static void readImage8( QImage &img, QDataStream &s, const PCXHEADER &header )
+{
+ QByteArray buf( header.BytesPerLine );
+
+ if(!img.create( header.width(), header.height(), 8, 256 ))
+ return;
+
+ for ( int y=0; y<header.height(); ++y )
+ {
+ if ( s.atEnd() )
+ {
+ img.reset();
+ return;
+ }
+
+ readLine( s, buf, header );
+
+ uchar *p = img.scanLine( y );
+ unsigned int bpl = QMIN(header.BytesPerLine, header.width());
+ for ( unsigned int x=0; x<bpl; ++x )
+ p[ x ] = buf[ x ];
+ }
+
+ Q_UINT8 flag;
+ s >> flag;
+ kdDebug( 399 ) << "Palette Flag: " << flag << endl;
+
+ if ( flag == 12 && ( header.Version == 5 || header.Version == 2 ) )
+ {
+ // Read the palette
+ Q_UINT8 r, g, b;
+ for ( int i=0; i<256; ++i )
+ {
+ s >> r >> g >> b;
+ img.setColor( i, qRgb( r, g, b ) );
+ }
+ }
+}
+
+static void readImage24( QImage &img, QDataStream &s, const PCXHEADER &header )
+{
+ QByteArray r_buf( header.BytesPerLine );
+ QByteArray g_buf( header.BytesPerLine );
+ QByteArray b_buf( header.BytesPerLine );
+
+ if(!img.create( header.width(), header.height(), 32 ))
+ return;
+
+ for ( int y=0; y<header.height(); ++y )
+ {
+ if ( s.atEnd() )
+ {
+ img.reset();
+ return;
+ }
+
+ readLine( s, r_buf, header );
+ readLine( s, g_buf, header );
+ readLine( s, b_buf, header );
+
+ uint *p = ( uint * )img.scanLine( y );
+ for ( unsigned int x=0; x<header.width(); ++x )
+ p[ x ] = qRgb( r_buf[ x ], g_buf[ x ], b_buf[ x ] );
+ }
+}
+
+KDE_EXPORT void kimgio_pcx_read( QImageIO *io )
+{
+ QDataStream s( io->ioDevice() );
+ s.setByteOrder( QDataStream::LittleEndian );
+
+ if ( s.device()->size() < 128 )
+ {
+ io->setStatus( -1 );
+ return;
+ }
+
+ PCXHEADER header;
+
+ s >> header;
+
+ if ( header.Manufacturer != 10 || s.atEnd())
+ {
+ io->setStatus( -1 );
+ return;
+ }
+
+ int w = header.width();
+ int h = header.height();
+
+ kdDebug( 399 ) << "Manufacturer: " << header.Manufacturer << endl;
+ kdDebug( 399 ) << "Version: " << header.Version << endl;
+ kdDebug( 399 ) << "Encoding: " << header.Encoding << endl;
+ kdDebug( 399 ) << "Bpp: " << header.Bpp << endl;
+ kdDebug( 399 ) << "Width: " << w << endl;
+ kdDebug( 399 ) << "Height: " << h << endl;
+ kdDebug( 399 ) << "Window: " << header.XMin << "," << header.XMax << ","
+ << header.YMin << "," << header.YMax << endl;
+ kdDebug( 399 ) << "BytesPerLine: " << header.BytesPerLine << endl;
+ kdDebug( 399 ) << "NPlanes: " << header.NPlanes << endl;
+
+ QImage img;
+
+ if ( header.Bpp == 1 && header.NPlanes == 1 )
+ {
+ readImage1( img, s, header );
+ }
+ else if ( header.Bpp == 1 && header.NPlanes == 4 )
+ {
+ readImage4( img, s, header );
+ }
+ else if ( header.Bpp == 8 && header.NPlanes == 1 )
+ {
+ readImage8( img, s, header );
+ }
+ else if ( header.Bpp == 8 && header.NPlanes == 3 )
+ {
+ readImage24( img, s, header );
+ }
+
+ kdDebug( 399 ) << "Image Bytes: " << img.numBytes() << endl;
+ kdDebug( 399 ) << "Image Bytes Per Line: " << img.bytesPerLine() << endl;
+ kdDebug( 399 ) << "Image Depth: " << img.depth() << endl;
+
+ if ( !img.isNull() )
+ {
+ io->setImage( img );
+ io->setStatus( 0 );
+ }
+ else
+ {
+ io->setStatus( -1 );
+ }
+}
+
+static void writeLine( QDataStream &s, QByteArray &buf )
+{
+ Q_UINT32 i = 0;
+ Q_UINT32 size = buf.size();
+ Q_UINT8 count, data;
+ char byte;
+
+ while ( i < size )
+ {
+ count = 1;
+ byte = buf[ i++ ];
+
+ while ( ( i < size ) && ( byte == buf[ i ] ) && ( count < 63 ) )
+ {
+ ++i;
+ ++count;
+ }
+
+ data = byte;
+
+ if ( count > 1 || data >= 0xc0 )
+ {
+ count |= 0xc0;
+ s << count;
+ }
+
+ s << data;
+ }
+}
+
+static void writeImage1( QImage &img, QDataStream &s, PCXHEADER &header )
+{
+ img = img.convertBitOrder( QImage::BigEndian );
+
+ header.Bpp = 1;
+ header.NPlanes = 1;
+ header.BytesPerLine = img.bytesPerLine();
+
+ s << header;
+
+ QByteArray buf( header.BytesPerLine );
+
+ for ( int y=0; y<header.height(); ++y )
+ {
+ Q_UINT8 *p = img.scanLine( y );
+
+ // Invert as QImage uses reverse palette for monochrome images?
+ for ( int i=0; i<header.BytesPerLine; ++i )
+ buf[ i ] = ~p[ i ];
+
+ writeLine( s, buf );
+ }
+}
+
+static void writeImage4( QImage &img, QDataStream &s, PCXHEADER &header )
+{
+ header.Bpp = 1;
+ header.NPlanes = 4;
+ header.BytesPerLine = header.width()/8;
+
+ for ( int i=0; i<16; ++i )
+ header.ColorMap.setColor( i, img.color( i ) );
+
+ s << header;
+
+ QByteArray buf[ 4 ];
+
+ for ( int i=0; i<4; ++i )
+ buf[ i ].resize( header.BytesPerLine );
+
+ for ( int y=0; y<header.height(); ++y )
+ {
+ Q_UINT8 *p = img.scanLine( y );
+
+ for ( int i=0; i<4; ++i )
+ buf[ i ].fill( 0 );
+
+ for ( unsigned int x=0; x<header.width(); ++x )
+ {
+ for ( int i=0; i<4; ++i )
+ if ( *( p+x ) & ( 1 << i ) )
+ buf[ i ][ x/8 ] |= 1 << ( 7-x%8 );
+ }
+
+ for ( int i=0; i<4; ++i )
+ writeLine( s, buf[ i ] );
+ }
+}
+
+static void writeImage8( QImage &img, QDataStream &s, PCXHEADER &header )
+{
+ header.Bpp = 8;
+ header.NPlanes = 1;
+ header.BytesPerLine = img.bytesPerLine();
+
+ s << header;
+
+ QByteArray buf( header.BytesPerLine );
+
+ for ( int y=0; y<header.height(); ++y )
+ {
+ Q_UINT8 *p = img.scanLine( y );
+
+ for ( int i=0; i<header.BytesPerLine; ++i )
+ buf[ i ] = p[ i ];
+
+ writeLine( s, buf );
+ }
+
+ // Write palette flag
+ Q_UINT8 byte = 12;
+ s << byte;
+
+ // Write palette
+ for ( int i=0; i<256; ++i )
+ s << RGB( img.color( i ) );
+}
+
+static void writeImage24( QImage &img, QDataStream &s, PCXHEADER &header )
+{
+ header.Bpp = 8;
+ header.NPlanes = 3;
+ header.BytesPerLine = header.width();
+
+ s << header;
+
+ QByteArray r_buf( header.width() );
+ QByteArray g_buf( header.width() );
+ QByteArray b_buf( header.width() );
+
+ for ( int y=0; y<header.height(); ++y )
+ {
+ uint *p = ( uint * )img.scanLine( y );
+
+ for ( unsigned int x=0; x<header.width(); ++x )
+ {
+ QRgb rgb = *p++;
+ r_buf[ x ] = qRed( rgb );
+ g_buf[ x ] = qGreen( rgb );
+ b_buf[ x ] = qBlue( rgb );
+ }
+
+ writeLine( s, r_buf );
+ writeLine( s, g_buf );
+ writeLine( s, b_buf );
+ }
+}
+
+KDE_EXPORT void kimgio_pcx_write( QImageIO *io )
+{
+ QDataStream s( io->ioDevice() );
+ s.setByteOrder( QDataStream::LittleEndian );
+
+ QImage img = io->image();
+
+ int w = img.width();
+ int h = img.height();
+
+ kdDebug( 399 ) << "Width: " << w << endl;
+ kdDebug( 399 ) << "Height: " << h << endl;
+ kdDebug( 399 ) << "Depth: " << img.depth() << endl;
+ kdDebug( 399 ) << "BytesPerLine: " << img.bytesPerLine() << endl;
+ kdDebug( 399 ) << "Num Colors: " << img.numColors() << endl;
+
+ PCXHEADER header;
+
+ header.Manufacturer = 10;
+ header.Version = 5;
+ header.Encoding = 1;
+ header.XMin = 0;
+ header.YMin = 0;
+ header.XMax = w-1;
+ header.YMax = h-1;
+ header.HDpi = 300;
+ header.YDpi = 300;
+ header.Reserved = 0;
+ header.PaletteInfo =1;
+
+ if ( img.depth() == 1 )
+ {
+ writeImage1( img, s, header );
+ }
+ else if ( img.depth() == 8 && img.numColors() <= 16 )
+ {
+ writeImage4( img, s, header );
+ }
+ else if ( img.depth() == 8 )
+ {
+ writeImage8( img, s, header );
+ }
+ else if ( img.depth() == 32 )
+ {
+ writeImage24( img, s, header );
+ }
+
+ io->setStatus( 0 );
+}
+
+/* vim: et sw=2 ts=2
+*/
+