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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /vcl/unx/generic/dtrans/bmp.cxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vcl/unx/generic/dtrans/bmp.cxx')
-rw-r--r--vcl/unx/generic/dtrans/bmp.cxx786
1 files changed, 786 insertions, 0 deletions
diff --git a/vcl/unx/generic/dtrans/bmp.cxx b/vcl/unx/generic/dtrans/bmp.cxx
new file mode 100644
index 000000000..ac8e50cc2
--- /dev/null
+++ b/vcl/unx/generic/dtrans/bmp.cxx
@@ -0,0 +1,786 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <tools/stream.hxx>
+
+#include <vcl/dibtools.hxx>
+#include <vcl/svapp.hxx>
+#include <vcl/bitmap.hxx>
+#include <vcl/bitmapex.hxx>
+#include <vcl/BitmapSimpleColorQuantizationFilter.hxx>
+
+#include <sal/log.hxx>
+#include <unx/x11/xlimits.hxx>
+
+#include "bmp.hxx"
+
+using namespace x11;
+
+/*
+ * helper functions
+ */
+
+static void writeLE( sal_uInt16 nNumber, sal_uInt8* pBuffer )
+{
+ pBuffer[ 0 ] = (nNumber & 0xff);
+ pBuffer[ 1 ] = ((nNumber>>8)&0xff);
+}
+
+static void writeLE( sal_uInt32 nNumber, sal_uInt8* pBuffer )
+{
+ pBuffer[ 0 ] = (nNumber & 0xff);
+ pBuffer[ 1 ] = ((nNumber>>8)&0xff);
+ pBuffer[ 2 ] = ((nNumber>>16)&0xff);
+ pBuffer[ 3 ] = ((nNumber>>24)&0xff);
+}
+
+static sal_uInt16 readLE16( const sal_uInt8* pBuffer )
+{
+ //This is untainted data which comes from a controlled source
+ //so, using a byte-swapping pattern which coverity doesn't
+ //detect as such
+ //http://security.coverity.com/blog/2014/Apr/on-detecting-heartbleed-with-static-analysis.html
+ sal_uInt16 v = pBuffer[1]; v <<= 8;
+ v |= pBuffer[0];
+ return v;
+}
+
+static sal_uInt32 readLE32( const sal_uInt8* pBuffer )
+{
+ //This is untainted data which comes from a controlled source
+ //so, using a byte-swapping pattern which coverity doesn't
+ //detect as such
+ //http://security.coverity.com/blog/2014/Apr/on-detecting-heartbleed-with-static-analysis.html
+ sal_uInt32 v = pBuffer[3]; v <<= 8;
+ v |= pBuffer[2]; v <<= 8;
+ v |= pBuffer[1]; v <<= 8;
+ v |= pBuffer[0];
+ return v;
+}
+
+/*
+ * scanline helpers
+ */
+
+static void X11_writeScanlinePixel( unsigned long nColor, sal_uInt8* pScanline, int depth, int x )
+{
+ switch( depth )
+ {
+ case 1:
+ pScanline[ x/8 ] &= ~(1 << (x&7));
+ pScanline[ x/8 ] |= ((nColor & 1) << (x&7));
+ break;
+ case 4:
+ pScanline[ x/2 ] &= ((x&1) ? 0x0f : 0xf0);
+ pScanline[ x/2 ] |= ((x&1) ? (nColor & 0x0f) : ((nColor & 0x0f) << 4));
+ break;
+ default:
+ case 8:
+ pScanline[ x ] = (nColor & 0xff);
+ break;
+ }
+}
+
+static sal_uInt8* X11_getPaletteBmpFromImage(
+ Display* pDisplay,
+ XImage* pImage,
+ Colormap aColormap,
+ sal_Int32& rOutSize
+ )
+{
+ sal_uInt32 nColors = 0;
+
+ rOutSize = 0;
+
+ sal_uInt8* pBuffer = nullptr;
+ sal_uInt32 nHeaderSize, nScanlineSize;
+ sal_uInt16 nBitCount;
+ // determine header and scanline size
+ switch( pImage->depth )
+ {
+ case 1:
+ nHeaderSize = 64;
+ nScanlineSize = (pImage->width+31)/32;
+ nBitCount = 1;
+ break;
+ case 4:
+ nHeaderSize = 72;
+ nScanlineSize = (pImage->width+1)/2;
+ nBitCount = 4;
+ break;
+ default:
+ case 8:
+ nHeaderSize = 1084;
+ nScanlineSize = pImage->width;
+ nBitCount = 8;
+ break;
+ }
+ // adjust scan lines to begin on %4 boundaries
+ if( nScanlineSize & 3 )
+ {
+ nScanlineSize &= 0xfffffffc;
+ nScanlineSize += 4;
+ }
+
+ // allocate buffer to hold header and scanlines, initialize to zero
+ rOutSize = nHeaderSize + nScanlineSize*pImage->height;
+ pBuffer = static_cast<sal_uInt8*>(rtl_allocateZeroMemory( rOutSize ));
+ for( int y = 0; y < pImage->height; y++ )
+ {
+ sal_uInt8* pScanline = pBuffer + nHeaderSize + (pImage->height-1-y)*nScanlineSize;
+ for( int x = 0; x < pImage->width; x++ )
+ {
+ unsigned long nPixel = XGetPixel( pImage, x, y );
+ if( nPixel >= nColors )
+ nColors = nPixel+1;
+ X11_writeScanlinePixel( nPixel, pScanline, pImage->depth, x );
+ }
+ }
+
+ // fill in header fields
+ pBuffer[ 0 ] = 'B';
+ pBuffer[ 1 ] = 'M';
+
+ writeLE( nHeaderSize, pBuffer+10 );
+ writeLE( sal_uInt32(40), pBuffer+14 );
+ writeLE( static_cast<sal_uInt32>(pImage->width), pBuffer+18 );
+ writeLE( static_cast<sal_uInt32>(pImage->height), pBuffer+22 );
+ writeLE( sal_uInt16(1), pBuffer+26 );
+ writeLE( nBitCount, pBuffer+28 );
+ writeLE( static_cast<sal_uInt32>(DisplayWidth(pDisplay,DefaultScreen(pDisplay))*1000/DisplayWidthMM(pDisplay,DefaultScreen(pDisplay))), pBuffer+38);
+ writeLE( static_cast<sal_uInt32>(DisplayHeight(pDisplay,DefaultScreen(pDisplay))*1000/DisplayHeightMM(pDisplay,DefaultScreen(pDisplay))), pBuffer+42);
+ writeLE( nColors, pBuffer+46 );
+ writeLE( nColors, pBuffer+50 );
+
+ XColor aColors[256];
+ if( nColors > (1U << nBitCount) ) // paranoia
+ nColors = (1U << nBitCount);
+ for( unsigned long nPixel = 0; nPixel < nColors; nPixel++ )
+ {
+ aColors[nPixel].flags = DoRed | DoGreen | DoBlue;
+ aColors[nPixel].pixel = nPixel;
+ }
+ XQueryColors( pDisplay, aColormap, aColors, nColors );
+ for( sal_uInt32 i = 0; i < nColors; i++ )
+ {
+ pBuffer[ 54 + i*4 ] = static_cast<sal_uInt8>(aColors[i].blue >> 8);
+ pBuffer[ 55 + i*4 ] = static_cast<sal_uInt8>(aColors[i].green >> 8);
+ pBuffer[ 56 + i*4 ] = static_cast<sal_uInt8>(aColors[i].red >> 8);
+ }
+
+ // done
+
+ return pBuffer;
+}
+
+static unsigned long doRightShift( unsigned long nValue, int nShift )
+{
+ return (nShift > 0) ? (nValue >> nShift) : (nValue << (-nShift));
+}
+
+static unsigned long doLeftShift( unsigned long nValue, int nShift )
+{
+ return (nShift > 0) ? (nValue << nShift) : (nValue >> (-nShift));
+}
+
+static void getShift( unsigned long nMask, int& rShift, int& rSigBits, int& rShift2 )
+{
+ unsigned long nUseMask = nMask;
+ rShift = 0;
+ while( nMask & 0xffffff00 )
+ {
+ rShift++;
+ nMask >>= 1;
+ }
+ if( rShift == 0 )
+ while( ! (nMask & 0x00000080) )
+ {
+ rShift--;
+ nMask <<= 1;
+ }
+
+ int nRotate = sizeof(unsigned long)*8 - rShift;
+ rSigBits = 0;
+ nMask = doRightShift( nUseMask, rShift) ;
+ while( nRotate-- )
+ {
+ if( nMask & 1 )
+ rSigBits++;
+ nMask >>= 1;
+ }
+
+ rShift2 = 0;
+ if( rSigBits < 8 )
+ rShift2 = 8-rSigBits;
+}
+
+static sal_uInt8* X11_getTCBmpFromImage(
+ Display* pDisplay,
+ XImage* pImage,
+ sal_Int32& rOutSize,
+ int nScreenNo
+ )
+{
+ // get masks from visual info (guesswork)
+ XVisualInfo aVInfo;
+ if( ! XMatchVisualInfo( pDisplay, nScreenNo, pImage->depth, TrueColor, &aVInfo ) )
+ return nullptr;
+
+ rOutSize = 0;
+
+ sal_uInt8* pBuffer = nullptr;
+ sal_uInt32 nHeaderSize = 60;
+ sal_uInt32 nScanlineSize = pImage->width*3;
+
+ // adjust scan lines to begin on %4 boundaries
+ if( nScanlineSize & 3 )
+ {
+ nScanlineSize &= 0xfffffffc;
+ nScanlineSize += 4;
+ }
+ int nRedShift, nRedSig, nRedShift2 = 0;
+ getShift( aVInfo.red_mask, nRedShift, nRedSig, nRedShift2 );
+ int nGreenShift, nGreenSig, nGreenShift2 = 0;
+ getShift( aVInfo.green_mask, nGreenShift, nGreenSig, nGreenShift2 );
+ int nBlueShift, nBlueSig, nBlueShift2 = 0;
+ getShift( aVInfo.blue_mask, nBlueShift, nBlueSig, nBlueShift2 );
+
+ // allocate buffer to hold header and scanlines, initialize to zero
+ rOutSize = nHeaderSize + nScanlineSize*pImage->height;
+ pBuffer = static_cast<sal_uInt8*>(rtl_allocateZeroMemory( rOutSize ));
+ for( int y = 0; y < pImage->height; y++ )
+ {
+ sal_uInt8* pScanline = pBuffer + nHeaderSize + (pImage->height-1-y)*nScanlineSize;
+ for( int x = 0; x < pImage->width; x++ )
+ {
+ unsigned long nPixel = XGetPixel( pImage, x, y );
+
+ sal_uInt8 nValue = static_cast<sal_uInt8>(doRightShift( nPixel&aVInfo.blue_mask, nBlueShift));
+ if( nBlueShift2 )
+ nValue |= (nValue >> nBlueShift2 );
+ *pScanline++ = nValue;
+
+ nValue = static_cast<sal_uInt8>(doRightShift( nPixel&aVInfo.green_mask, nGreenShift));
+ if( nGreenShift2 )
+ nValue |= (nValue >> nGreenShift2 );
+ *pScanline++ = nValue;
+
+ nValue = static_cast<sal_uInt8>(doRightShift( nPixel&aVInfo.red_mask, nRedShift));
+ if( nRedShift2 )
+ nValue |= (nValue >> nRedShift2 );
+ *pScanline++ = nValue;
+ }
+ }
+
+ // fill in header fields
+ pBuffer[ 0 ] = 'B';
+ pBuffer[ 1 ] = 'M';
+
+ writeLE( nHeaderSize, pBuffer+10 );
+ writeLE( sal_uInt32(40), pBuffer+14 );
+ writeLE( static_cast<sal_uInt32>(pImage->width), pBuffer+18 );
+ writeLE( static_cast<sal_uInt32>(pImage->height), pBuffer+22 );
+ writeLE( sal_uInt16(1), pBuffer+26 );
+ writeLE( sal_uInt16(24), pBuffer+28 );
+ writeLE( static_cast<sal_uInt32>(DisplayWidth(pDisplay,DefaultScreen(pDisplay))*1000/DisplayWidthMM(pDisplay,DefaultScreen(pDisplay))), pBuffer+38);
+ writeLE( static_cast<sal_uInt32>(DisplayHeight(pDisplay,DefaultScreen(pDisplay))*1000/DisplayHeightMM(pDisplay,DefaultScreen(pDisplay))), pBuffer+42);
+
+ // done
+
+ return pBuffer;
+}
+
+sal_uInt8* x11::X11_getBmpFromPixmap(
+ Display* pDisplay,
+ Drawable aDrawable,
+ Colormap aColormap,
+ sal_Int32& rOutSize
+ )
+{
+ // get geometry of drawable
+ ::Window aRoot;
+ int x,y;
+ unsigned int w, h, bw, d;
+ XGetGeometry( pDisplay, aDrawable, &aRoot, &x, &y, &w, &h, &bw, &d );
+
+ // find which screen we are on
+ int nScreenNo = ScreenCount( pDisplay );
+ while( nScreenNo-- )
+ {
+ if( RootWindow( pDisplay, nScreenNo ) == aRoot )
+ break;
+ }
+ if( nScreenNo < 0 )
+ return nullptr;
+
+ if( aColormap == None )
+ aColormap = DefaultColormap( pDisplay, nScreenNo );
+
+ // get the image
+ XImage* pImage = XGetImage( pDisplay, aDrawable, 0, 0, w, h, AllPlanes, ZPixmap );
+ if( ! pImage )
+ return nullptr;
+
+ sal_uInt8* pBmp = d <= 8 ?
+ X11_getPaletteBmpFromImage( pDisplay, pImage, aColormap, rOutSize ) :
+ X11_getTCBmpFromImage( pDisplay, pImage, rOutSize, nScreenNo );
+ XDestroyImage( pImage );
+
+ return pBmp;
+}
+
+/*
+ * PixmapHolder
+ */
+
+PixmapHolder::PixmapHolder( Display* pDisplay )
+ : m_pDisplay(pDisplay)
+ , m_aColormap(None)
+ , m_aPixmap(None)
+ , m_aBitmap(None)
+ , m_nRedShift(0)
+ , m_nGreenShift(0)
+ , m_nBlueShift(0)
+ , m_nBlueShift2Mask(0)
+ , m_nRedShift2Mask(0)
+ , m_nGreenShift2Mask(0)
+{
+ /* try to get a 24 bit true color visual, if that fails,
+ * revert to default visual
+ */
+ if( ! XMatchVisualInfo( m_pDisplay, DefaultScreen( m_pDisplay ), 24, TrueColor, &m_aInfo ) )
+ {
+#if OSL_DEBUG_LEVEL > 1
+ SAL_INFO("vcl.unx.dtrans", "PixmapHolder reverting to default visual.");
+#endif
+ Visual* pVisual = DefaultVisual( m_pDisplay, DefaultScreen( m_pDisplay ) );
+ m_aInfo.screen = DefaultScreen( m_pDisplay );
+ m_aInfo.visual = pVisual;
+ m_aInfo.visualid = pVisual->visualid;
+ m_aInfo.c_class = pVisual->c_class;
+ m_aInfo.red_mask = pVisual->red_mask;
+ m_aInfo.green_mask = pVisual->green_mask;
+ m_aInfo.blue_mask = pVisual->blue_mask;
+ m_aInfo.depth = DefaultDepth( m_pDisplay, m_aInfo.screen );
+ }
+ m_aColormap = DefaultColormap( m_pDisplay, m_aInfo.screen );
+#if OSL_DEBUG_LEVEL > 1
+ static const char* pClasses[] =
+ { "StaticGray", "GrayScale", "StaticColor", "PseudoColor", "TrueColor", "DirectColor" };
+ SAL_INFO("vcl.unx.dtrans", "PixmapHolder visual: id = "
+ << std::showbase << std::hex
+ << m_aInfo.visualid
+ << ", class = "
+ << ((m_aInfo.c_class >= 0 &&
+ unsigned(m_aInfo.c_class) <
+ SAL_N_ELEMENTS(pClasses)) ?
+ pClasses[m_aInfo.c_class] :
+ "<unknown>")
+ << " ("
+ << std::dec
+ << m_aInfo.c_class
+ << "), depth="
+ << m_aInfo.depth
+ << "; color map = "
+ << std::showbase << std::hex
+ << m_aColormap);
+#endif
+ if( m_aInfo.c_class != TrueColor )
+ return;
+
+ int nRedShift2(0);
+ int nGreenShift2(0);
+ int nBlueShift2(0);
+ int nRedSig, nGreenSig, nBlueSig;
+ getShift( m_aInfo.red_mask, m_nRedShift, nRedSig, nRedShift2 );
+ getShift( m_aInfo.green_mask, m_nGreenShift, nGreenSig, nGreenShift2 );
+ getShift( m_aInfo.blue_mask, m_nBlueShift, nBlueSig, nBlueShift2 );
+
+ m_nBlueShift2Mask = nBlueShift2 ? ~static_cast<unsigned long>((1<<nBlueShift2)-1) : ~0L;
+ m_nGreenShift2Mask = nGreenShift2 ? ~static_cast<unsigned long>((1<<nGreenShift2)-1) : ~0L;
+ m_nRedShift2Mask = nRedShift2 ? ~static_cast<unsigned long>((1<<nRedShift2)-1) : ~0L;
+}
+
+PixmapHolder::~PixmapHolder()
+{
+ if( m_aPixmap != None )
+ XFreePixmap( m_pDisplay, m_aPixmap );
+ if( m_aBitmap != None )
+ XFreePixmap( m_pDisplay, m_aBitmap );
+}
+
+unsigned long PixmapHolder::getTCPixel( sal_uInt8 r, sal_uInt8 g, sal_uInt8 b ) const
+{
+ unsigned long nPixel = 0;
+ unsigned long nValue = static_cast<unsigned long>(b);
+ nValue &= m_nBlueShift2Mask;
+ nPixel |= doLeftShift( nValue, m_nBlueShift );
+
+ nValue = static_cast<unsigned long>(g);
+ nValue &= m_nGreenShift2Mask;
+ nPixel |= doLeftShift( nValue, m_nGreenShift );
+
+ nValue = static_cast<unsigned long>(r);
+ nValue &= m_nRedShift2Mask;
+ nPixel |= doLeftShift( nValue, m_nRedShift );
+
+ return nPixel;
+}
+
+void PixmapHolder::setBitmapDataPalette( const sal_uInt8* pData, XImage* pImage )
+{
+ // setup palette
+ XColor aPalette[256];
+
+ sal_uInt32 nColors = readLE32( pData+32 );
+ sal_uInt32 nWidth = readLE32( pData+4 );
+ sal_uInt32 nHeight = readLE32( pData+8 );
+ sal_uInt16 nDepth = readLE16( pData+14 );
+
+ for( sal_uInt32 i = 0 ; i < nColors; i++ )
+ {
+ if( m_aInfo.c_class != TrueColor )
+ {
+ //This is untainted data which comes from a controlled source
+ //so, using a byte-swapping pattern which coverity doesn't
+ //detect as such
+ //http://security.coverity.com/blog/2014/Apr/on-detecting-heartbleed-with-static-analysis.html
+ aPalette[i].red = static_cast<unsigned short>(pData[42 + i*4]);
+ aPalette[i].red <<= 8;
+ aPalette[i].red |= static_cast<unsigned short>(pData[42 + i*4]);
+
+ aPalette[i].green = static_cast<unsigned short>(pData[41 + i*4]);
+ aPalette[i].green <<= 8;
+ aPalette[i].green |= static_cast<unsigned short>(pData[41 + i*4]);
+
+ aPalette[i].blue = static_cast<unsigned short>(pData[40 + i*4]);
+ aPalette[i].blue <<= 8;
+ aPalette[i].blue |= static_cast<unsigned short>(pData[40 + i*4]);
+ XAllocColor( m_pDisplay, m_aColormap, aPalette+i );
+ }
+ else
+ aPalette[i].pixel = getTCPixel( pData[42+i*4], pData[41+i*4], pData[40+i*4] );
+ }
+ const sal_uInt8* pBMData = pData + readLE32( pData ) + 4*nColors;
+
+ sal_uInt32 nScanlineSize = 0;
+ switch( nDepth )
+ {
+ case 1:
+ nScanlineSize = (nWidth+31)/32;
+ break;
+ case 4:
+ nScanlineSize = (nWidth+1)/2;
+ break;
+ case 8:
+ nScanlineSize = nWidth;
+ break;
+ }
+ // adjust scan lines to begin on %4 boundaries
+ if( nScanlineSize & 3 )
+ {
+ nScanlineSize &= 0xfffffffc;
+ nScanlineSize += 4;
+ }
+
+ // allocate buffer to hold header and scanlines, initialize to zero
+ for( unsigned int y = 0; y < nHeight; y++ )
+ {
+ const sal_uInt8* pScanline = pBMData + (nHeight-1-y)*nScanlineSize;
+ for( unsigned int x = 0; x < nWidth; x++ )
+ {
+ int nCol = 0;
+ switch( nDepth )
+ {
+ case 1: nCol = (pScanline[ x/8 ] & (0x80 >> (x&7))) != 0 ? 0 : 1; break;
+ case 4:
+ if( x & 1 )
+ nCol = static_cast<int>(pScanline[ x/2 ] >> 4);
+ else
+ nCol = static_cast<int>(pScanline[ x/2 ] & 0x0f);
+ break;
+ case 8: nCol = static_cast<int>(pScanline[x]);
+ }
+ XPutPixel( pImage, x, y, aPalette[nCol].pixel );
+ }
+ }
+}
+
+void PixmapHolder::setBitmapDataTCDither( const sal_uInt8* pData, XImage* pImage )
+{
+ XColor aPalette[216];
+
+ int nNonAllocs = 0;
+
+ for( int r = 0; r < 6; r++ )
+ {
+ for( int g = 0; g < 6; g++ )
+ {
+ for( int b = 0; b < 6; b++ )
+ {
+ int i = r*36+g*6+b;
+ aPalette[i].red = r == 5 ? 0xffff : r*10922;
+ aPalette[i].green = g == 5 ? 0xffff : g*10922;
+ aPalette[i].blue = b == 5 ? 0xffff : b*10922;
+ aPalette[i].pixel = 0;
+ if( ! XAllocColor( m_pDisplay, m_aColormap, aPalette+i ) )
+ nNonAllocs++;
+ }
+ }
+ }
+
+ if( nNonAllocs )
+ {
+ XColor aRealPalette[256];
+ int nColors = 1 << m_aInfo.depth;
+ int i;
+ for( i = 0; i < nColors; i++ )
+ aRealPalette[i].pixel = static_cast<unsigned long>(i);
+ XQueryColors( m_pDisplay, m_aColormap, aRealPalette, nColors );
+ for( i = 0; i < nColors; i++ )
+ {
+ sal_uInt8 nIndex =
+ 36*static_cast<sal_uInt8>(aRealPalette[i].red/10923) +
+ 6*static_cast<sal_uInt8>(aRealPalette[i].green/10923) +
+ static_cast<sal_uInt8>(aRealPalette[i].blue/10923);
+ if( aPalette[nIndex].pixel == 0 )
+ aPalette[nIndex] = aRealPalette[i];
+ }
+ }
+
+ sal_uInt32 nWidth = readLE32( pData+4 );
+ sal_uInt32 nHeight = readLE32( pData+8 );
+
+ const sal_uInt8* pBMData = pData + readLE32( pData );
+ sal_uInt32 nScanlineSize = nWidth*3;
+ // adjust scan lines to begin on %4 boundaries
+ if( nScanlineSize & 3 )
+ {
+ nScanlineSize &= 0xfffffffc;
+ nScanlineSize += 4;
+ }
+
+ for( int y = 0; y < static_cast<int>(nHeight); y++ )
+ {
+ const sal_uInt8* pScanline = pBMData + (nHeight-1-static_cast<sal_uInt32>(y))*nScanlineSize;
+ for( int x = 0; x < static_cast<int>(nWidth); x++ )
+ {
+ sal_uInt8 b = pScanline[3*x];
+ sal_uInt8 g = pScanline[3*x+1];
+ sal_uInt8 r = pScanline[3*x+2];
+ sal_uInt8 i = 36*(r/43) + 6*(g/43) + (b/43);
+
+ XPutPixel( pImage, x, y, aPalette[ i ].pixel );
+ }
+ }
+}
+
+void PixmapHolder::setBitmapDataTC( const sal_uInt8* pData, XImage* pImage )
+{
+ sal_uInt32 nWidth = readLE32( pData+4 );
+ sal_uInt32 nHeight = readLE32( pData+8 );
+
+ if (!nWidth || !nHeight)
+ return;
+
+ const sal_uInt8* pBMData = pData + readLE32( pData );
+ sal_uInt32 nScanlineSize = nWidth*3;
+ // adjust scan lines to begin on %4 boundaries
+ if( nScanlineSize & 3 )
+ {
+ nScanlineSize &= 0xfffffffc;
+ nScanlineSize += 4;
+ }
+
+ for( int y = 0; y < static_cast<int>(nHeight); y++ )
+ {
+ const sal_uInt8* pScanline = pBMData + (nHeight-1-static_cast<sal_uInt32>(y))*nScanlineSize;
+ for( int x = 0; x < static_cast<int>(nWidth); x++ )
+ {
+ unsigned long nPixel = getTCPixel( pScanline[3*x+2], pScanline[3*x+1], pScanline[3*x] );
+ XPutPixel( pImage, x, y, nPixel );
+ }
+ }
+}
+
+bool PixmapHolder::needsConversion( const sal_uInt8* pData ) const
+{
+ if( pData[0] != 'B' || pData[1] != 'M' )
+ return true;
+
+ pData = pData+14;
+ sal_uInt32 nDepth = readLE32( pData+14 );
+ if( nDepth == 24 )
+ {
+ if( m_aInfo.c_class != TrueColor )
+ return true;
+ }
+ else if( nDepth != static_cast<sal_uInt32>(m_aInfo.depth) )
+ {
+ if( m_aInfo.c_class != TrueColor )
+ return true;
+ }
+
+ return false;
+}
+
+Pixmap PixmapHolder::setBitmapData( const sal_uInt8* pData )
+{
+ if( pData[0] != 'B' || pData[1] != 'M' )
+ return None;
+
+ pData = pData+14;
+
+ // reject compressed data
+ if( readLE32( pData + 16 ) != 0 )
+ return None;
+
+ sal_uInt32 nWidth = readLE32( pData+4 );
+ sal_uInt32 nHeight = readLE32( pData+8 );
+
+ if( m_aPixmap != None )
+ {
+ XFreePixmap( m_pDisplay, m_aPixmap );
+ m_aPixmap = None;
+ }
+ if( m_aBitmap != None )
+ {
+ XFreePixmap( m_pDisplay, m_aBitmap );
+ m_aBitmap = None;
+ }
+
+ m_aPixmap = limitXCreatePixmap( m_pDisplay,
+ RootWindow( m_pDisplay, m_aInfo.screen ),
+ nWidth, nHeight, m_aInfo.depth );
+
+ if( m_aPixmap != None )
+ {
+ XImage aImage;
+ aImage.width = static_cast<int>(nWidth);
+ aImage.height = static_cast<int>(nHeight);
+ aImage.xoffset = 0;
+ aImage.format = ZPixmap;
+ aImage.data = nullptr;
+ aImage.byte_order = ImageByteOrder( m_pDisplay );
+ aImage.bitmap_unit = BitmapUnit( m_pDisplay );
+ aImage.bitmap_bit_order = BitmapBitOrder( m_pDisplay );
+ aImage.bitmap_pad = BitmapPad( m_pDisplay );
+ aImage.depth = m_aInfo.depth;
+ aImage.red_mask = m_aInfo.red_mask;
+ aImage.green_mask = m_aInfo.green_mask;
+ aImage.blue_mask = m_aInfo.blue_mask;
+ aImage.bytes_per_line = 0; // filled in by XInitImage
+ if( m_aInfo.depth <= 8 )
+ aImage.bits_per_pixel = m_aInfo.depth;
+ else
+ aImage.bits_per_pixel = 8*((m_aInfo.depth+7)/8);
+ aImage.obdata = nullptr;
+
+ XInitImage( &aImage );
+ aImage.data = static_cast<char*>(std::malloc( nHeight*aImage.bytes_per_line ));
+
+ if( readLE32( pData+14 ) == 24 )
+ {
+ if( m_aInfo.c_class == TrueColor )
+ setBitmapDataTC( pData, &aImage );
+ else
+ setBitmapDataTCDither( pData, &aImage );
+ }
+ else
+ setBitmapDataPalette( pData, &aImage );
+
+ // put the image
+ XPutImage( m_pDisplay,
+ m_aPixmap,
+ DefaultGC( m_pDisplay, m_aInfo.screen ),
+ &aImage,
+ 0, 0,
+ 0, 0,
+ nWidth, nHeight );
+
+ // clean up
+ std::free( aImage.data );
+
+ // prepare bitmap (mask)
+ m_aBitmap = limitXCreatePixmap( m_pDisplay,
+ RootWindow( m_pDisplay, m_aInfo.screen ),
+ nWidth, nHeight, 1 );
+ XGCValues aVal;
+ aVal.function = GXcopy;
+ aVal.foreground = 0xffffffff;
+ GC aGC = XCreateGC( m_pDisplay, m_aBitmap, GCFunction | GCForeground, &aVal );
+ XFillRectangle( m_pDisplay, m_aBitmap, aGC, 0, 0, nWidth, nHeight );
+ XFreeGC( m_pDisplay, aGC );
+ }
+
+ return m_aPixmap;
+}
+
+css::uno::Sequence<sal_Int8> x11::convertBitmapDepth(
+ css::uno::Sequence<sal_Int8> const & data, int depth)
+{
+ if (depth < 4) {
+ depth = 1;
+ } else if (depth < 8) {
+ depth = 4;
+ } else if (depth > 8 && depth < 24) {
+ depth = 24;
+ }
+ SolarMutexGuard g;
+ SvMemoryStream in(
+ const_cast<sal_Int8 *>(data.getConstArray()), data.getLength(),
+ StreamMode::READ);
+ Bitmap bm;
+ ReadDIB(bm, in, true);
+ if (bm.getPixelFormat() == vcl::PixelFormat::N24_BPP && depth <= 8) {
+ bm.Dither();
+ }
+ if (vcl::pixelFormatBitCount(bm.getPixelFormat()) != depth) {
+ switch (depth) {
+ case 1:
+ bm.Convert(BmpConversion::N1BitThreshold);
+ break;
+ case 4:
+ {
+ BitmapEx aBmpEx(bm);
+ BitmapFilter::Filter(aBmpEx, BitmapSimpleColorQuantizationFilter(1<<4));
+ bm = aBmpEx.GetBitmap();
+ }
+ break;
+
+ case 8:
+ {
+ BitmapEx aBmpEx(bm);
+ BitmapFilter::Filter(aBmpEx, BitmapSimpleColorQuantizationFilter(1<<8));
+ bm = aBmpEx.GetBitmap();
+ }
+ break;
+
+ case 24:
+ bm.Convert(BmpConversion::N24Bit);
+ break;
+ }
+ }
+ SvMemoryStream out;
+ WriteDIB(bm, out, false, true);
+ return css::uno::Sequence<sal_Int8>(
+ static_cast<sal_Int8 const *>(out.GetData()), out.GetEndOfData());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */