diff options
Diffstat (limited to 'filter/source/graphicfilter/egif/egif.cxx')
| -rw-r--r-- | filter/source/graphicfilter/egif/egif.cxx | 573 |
1 files changed, 573 insertions, 0 deletions
diff --git a/filter/source/graphicfilter/egif/egif.cxx b/filter/source/graphicfilter/egif/egif.cxx new file mode 100644 index 000000000000..56715487148b --- /dev/null +++ b/filter/source/graphicfilter/egif/egif.cxx @@ -0,0 +1,573 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org 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 Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_filter.hxx" + +#include <vcl/graph.hxx> +#include <vcl/svapp.hxx> +#include <vcl/msgbox.hxx> +#include <vcl/window.hxx> +#include <svl/solar.hrc> +#include <svtools/fltcall.hxx> +#include <svtools/FilterConfigItem.hxx> +#include "giflzwc.hxx" + +// ------------- +// - GIFWriter - +// ------------- + +class GIFWriter +{ + Bitmap aAccBmp; + BitmapReadAccess* pAcc; + SvStream* pGIF; + ULONG nMinPercent; + ULONG nMaxPercent; + ULONG nLastPercent; + long nActX; + long nActY; + sal_Int32 nInterlaced; + BOOL bStatus; + BOOL bTransparent; + + void MayCallback( ULONG nPercent ); + void WriteSignature( BOOL bGIF89a ); + void WriteGlobalHeader( const Size& rSize ); + void WriteLoopExtension( const Animation& rAnimation ); + void WriteLogSizeExtension( const Size& rSize100 ); + void WriteImageExtension( long nTimer, Disposal eDisposal ); + void WriteLocalHeader(); + void WritePalette(); + void WriteAccess(); + void WriteTerminator(); + + BOOL CreateAccess( const BitmapEx& rBmpEx ); + void DestroyAccess(); + + void WriteAnimation( const Animation& rAnimation ); + void WriteBitmapEx( const BitmapEx& rBmpEx, const Point& rPoint, BOOL bExtended, + long nTimer = 0, Disposal eDisposal = DISPOSE_NOT ); + + com::sun::star::uno::Reference< com::sun::star::task::XStatusIndicator > xStatusIndicator; + +public: + + GIFWriter() {} + ~GIFWriter() {} + + BOOL WriteGIF( const Graphic& rGraphic, SvStream& rGIF, + FilterConfigItem* pConfigItem ); +}; + +// ------------------------------------------------------------------------ + +BOOL GIFWriter::WriteGIF( const Graphic& rGraphic, SvStream& rGIF, + FilterConfigItem* pFilterConfigItem ) +{ + if ( pFilterConfigItem ) + { + xStatusIndicator = pFilterConfigItem->GetStatusIndicator(); + if ( xStatusIndicator.is() ) + { + rtl::OUString aMsg; + xStatusIndicator->start( aMsg, 100 ); + } + } + + Size aSize100; + const MapMode aMap( rGraphic.GetPrefMapMode() ); + BOOL bLogSize = ( aMap.GetMapUnit() != MAP_PIXEL ); + + if( bLogSize ) + aSize100 = Application::GetDefaultDevice()->LogicToLogic( rGraphic.GetPrefSize(), aMap, MAP_100TH_MM ); + + pGIF = &rGIF; + bStatus = TRUE; + nLastPercent = 0; + nInterlaced = 0; + pAcc = NULL; + + if ( pFilterConfigItem ) + nInterlaced = pFilterConfigItem->ReadInt32( String( RTL_CONSTASCII_USTRINGPARAM( "Interlaced" ) ), 0 ); + + pGIF->SetNumberFormatInt( NUMBERFORMAT_INT_LITTLEENDIAN ); + + if( rGraphic.IsAnimated() ) + { + const Animation& rAnimation = rGraphic.GetAnimation(); + + WriteSignature( TRUE ); + + if ( bStatus ) + { + WriteGlobalHeader( rAnimation.GetDisplaySizePixel() ); + + if( bStatus ) + { + WriteLoopExtension( rAnimation ); + + if( bStatus ) + WriteAnimation( rAnimation ); + } + } + } + else + { + const BOOL bGrafTrans = rGraphic.IsTransparent(); + + BitmapEx aBmpEx; + + if( bGrafTrans ) + aBmpEx = rGraphic.GetBitmapEx(); + else + aBmpEx = BitmapEx( rGraphic.GetBitmap() ); + + nMinPercent = 0; + nMaxPercent = 100; + + WriteSignature( bGrafTrans || bLogSize ); + + if( bStatus ) + { + WriteGlobalHeader( aBmpEx.GetSizePixel() ); + + if( bStatus ) + WriteBitmapEx( aBmpEx, Point(), bGrafTrans ); + } + } + + if( bStatus ) + { + if( bLogSize ) + WriteLogSizeExtension( aSize100 ); + + WriteTerminator(); + } + + if ( xStatusIndicator.is() ) + xStatusIndicator->end(); + + return bStatus; +} + +// ------------------------------------------------------------------------ + +void GIFWriter::WriteBitmapEx( const BitmapEx& rBmpEx, const Point& rPoint, + BOOL bExtended, long nTimer, Disposal eDisposal ) +{ + if( CreateAccess( rBmpEx ) ) + { + nActX = rPoint.X(); + nActY = rPoint.Y(); + + if( bExtended ) + WriteImageExtension( nTimer, eDisposal ); + + if( bStatus ) + { + WriteLocalHeader(); + + if( bStatus ) + { + WritePalette(); + + if( bStatus ) + WriteAccess(); + } + } + + DestroyAccess(); + } +} + +// ------------------------------------------------------------------------ + +void GIFWriter::WriteAnimation( const Animation& rAnimation ) +{ + const USHORT nCount = rAnimation.Count(); + + if( nCount ) + { + const double fStep = 100. / nCount; + + nMinPercent = 0L; + nMaxPercent = (ULONG) fStep; + + for( USHORT i = 0; i < nCount; i++ ) + { + const AnimationBitmap& rAnimBmp = rAnimation.Get( i ); + + WriteBitmapEx( rAnimBmp.aBmpEx, rAnimBmp.aPosPix, TRUE, + rAnimBmp.nWait, rAnimBmp.eDisposal ); + nMinPercent = nMaxPercent; + nMaxPercent = (ULONG) ( nMaxPercent + fStep ); + } + } +} + +// ------------------------------------------------------------------------ + +void GIFWriter::MayCallback( ULONG nPercent ) +{ + if ( xStatusIndicator.is() ) + { + if( nPercent >= nLastPercent + 3 ) + { + nLastPercent = nPercent; + if ( nPercent <= 100 ) + xStatusIndicator->setValue( nPercent ); + } + } +} + +// ------------------------------------------------------------------------ + +BOOL GIFWriter::CreateAccess( const BitmapEx& rBmpEx ) +{ + if( bStatus ) + { + Bitmap aMask( rBmpEx.GetMask() ); + + aAccBmp = rBmpEx.GetBitmap(); + bTransparent = FALSE; + + if( !!aMask ) + { + if( aAccBmp.Convert( BMP_CONVERSION_8BIT_TRANS ) ) + { + aMask.Convert( BMP_CONVERSION_1BIT_THRESHOLD ); + aAccBmp.Replace( aMask, BMP_COL_TRANS ); + bTransparent = TRUE; + } + else + aAccBmp.Convert( BMP_CONVERSION_8BIT_COLORS ); + } + else + aAccBmp.Convert( BMP_CONVERSION_8BIT_COLORS ); + + pAcc = aAccBmp.AcquireReadAccess(); + + if( !pAcc ) + bStatus = FALSE; + } + + return bStatus; +} + +// ------------------------------------------------------------------------ + +void GIFWriter::DestroyAccess() +{ + aAccBmp.ReleaseAccess( pAcc ); + pAcc = NULL; +} + +// ------------------------------------------------------------------------ + +void GIFWriter::WriteSignature( BOOL bGIF89a ) +{ + if( bStatus ) + { + pGIF->Write( bGIF89a ? "GIF89a" : "GIF87a" , 6 ); + + if( pGIF->GetError() ) + bStatus = FALSE; + } +} + +// ------------------------------------------------------------------------ + +void GIFWriter::WriteGlobalHeader( const Size& rSize ) +{ + if( bStatus ) + { + // 256 Farben + const UINT16 nWidth = (UINT16) rSize.Width(); + const UINT16 nHeight = (UINT16) rSize.Height(); + const BYTE cFlags = 128 | ( 7 << 4 ); + + // Werte rausschreiben + *pGIF << nWidth; + *pGIF << nHeight; + *pGIF << cFlags; + *pGIF << (BYTE) 0x00; + *pGIF << (BYTE) 0x00; + + // Dummy-Palette mit zwei Eintraegen (Schwarz/Weiss) schreiben; + // dieses nur wegen Photoshop-Bug, da die keine Bilder ohne + // globale Farbpalette lesen koennen + *pGIF << (UINT16) 0; + *pGIF << (UINT16) 255; + *pGIF << (UINT16) 65535; + + if( pGIF->GetError() ) + bStatus = FALSE; + } +} + +// ------------------------------------------------------------------------ + +void GIFWriter::WriteLoopExtension( const Animation& rAnimation ) +{ + DBG_ASSERT( rAnimation.Count() > 0, "Animation has no bitmaps!" ); + + USHORT nLoopCount = (USHORT) rAnimation.GetLoopCount(); + + // falls nur ein Durchlauf stattfinden soll, + // wird keine LoopExtension geschrieben; + // Default ist dann immer ein Durchlauf + if( nLoopCount != 1 ) + { + // Netscape interpretiert den LoopCount + // als reine Anzahl der _Wiederholungen_ + if( nLoopCount ) + nLoopCount--; + + const BYTE cLoByte = (const BYTE) nLoopCount; + const BYTE cHiByte = (const BYTE) ( nLoopCount >> 8 ); + + *pGIF << (BYTE) 0x21; + *pGIF << (BYTE) 0xff; + *pGIF << (BYTE) 0x0b; + pGIF->Write( "NETSCAPE2.0", 11 ); + *pGIF << (BYTE) 0x03; + *pGIF << (BYTE) 0x01; + *pGIF << cLoByte; + *pGIF << cHiByte; + *pGIF << (BYTE) 0x00; + } +} + +// ------------------------------------------------------------------------ + +void GIFWriter::WriteLogSizeExtension( const Size& rSize100 ) +{ + // PrefSize in 100th-mm als ApplicationExtension schreiben + if( rSize100.Width() && rSize100.Height() ) + { + *pGIF << (BYTE) 0x21; + *pGIF << (BYTE) 0xff; + *pGIF << (BYTE) 0x0b; + pGIF->Write( "STARDIV 5.0", 11 ); + *pGIF << (BYTE) 0x09; + *pGIF << (BYTE) 0x01; + *pGIF << (UINT32) rSize100.Width(); + *pGIF << (UINT32) rSize100.Height(); + *pGIF << (BYTE) 0x00; + } +} + +// ------------------------------------------------------------------------ + +void GIFWriter::WriteImageExtension( long nTimer, Disposal eDisposal ) +{ + if( bStatus ) + { + const UINT16 nDelay = (UINT16) nTimer; + BYTE cFlags = 0; + + // Transparent-Flag setzen + if( bTransparent ) + cFlags |= 1; + + // Disposal-Wert setzen + if( eDisposal == DISPOSE_BACK ) + cFlags |= ( 2 << 2 ); + else if( eDisposal == DISPOSE_PREVIOUS ) + cFlags |= ( 3 << 2 ); + + *pGIF << (BYTE) 0x21; + *pGIF << (BYTE) 0xf9; + *pGIF << (BYTE) 0x04; + *pGIF << cFlags; + *pGIF << nDelay; + *pGIF << (BYTE) pAcc->GetBestPaletteIndex( BMP_COL_TRANS ); + *pGIF << (BYTE) 0x00; + + if( pGIF->GetError() ) + bStatus = FALSE; + } +} + +// ------------------------------------------------------------------------ + +void GIFWriter::WriteLocalHeader() +{ + if( bStatus ) + { + const UINT16 nPosX = (UINT16) nActX; + const UINT16 nPosY = (UINT16) nActY; + const UINT16 nWidth = (UINT16) pAcc->Width(); + const UINT16 nHeight = (UINT16) pAcc->Height(); + BYTE cFlags = (BYTE) ( pAcc->GetBitCount() - 1 ); + + // Interlaced-Flag setzen + if( nInterlaced ) + cFlags |= 0x40; + + // Flag fuer lokale Farbpalette setzen + cFlags |= 0x80; + + // alles rausschreiben + *pGIF << (BYTE) 0x2c; + *pGIF << nPosX; + *pGIF << nPosY; + *pGIF << nWidth; + *pGIF << nHeight; + *pGIF << cFlags; + + if( pGIF->GetError() ) + bStatus = FALSE; + } +} + +// ------------------------------------------------------------------------ + +void GIFWriter::WritePalette() +{ + if( bStatus && pAcc->HasPalette() ) + { + const USHORT nCount = pAcc->GetPaletteEntryCount(); + const USHORT nMaxCount = ( 1 << pAcc->GetBitCount() ); + + for ( USHORT i = 0; i < nCount; i++ ) + { + const BitmapColor& rColor = pAcc->GetPaletteColor( i ); + + *pGIF << rColor.GetRed(); + *pGIF << rColor.GetGreen(); + *pGIF << rColor.GetBlue(); + } + + // Rest mit 0 auffuellen + if( nCount < nMaxCount ) + pGIF->SeekRel( ( nMaxCount - nCount ) * 3 ); + + if( pGIF->GetError() ) + bStatus = FALSE; + } +} + +// ------------------------------------------------------------------------ + +void GIFWriter::WriteAccess() +{ + GIFLZWCompressor aCompressor; + const long nWidth = pAcc->Width(); + const long nHeight = pAcc->Height(); + BYTE* pBuffer = NULL; + const ULONG nFormat = pAcc->GetScanlineFormat(); + long nY; + long nT; + long i; + BOOL bNative = ( BMP_FORMAT_8BIT_PAL == nFormat ); + + if( !bNative ) + pBuffer = new BYTE[ nWidth ]; + + if( bStatus && ( 8 == pAcc->GetBitCount() ) && pAcc->HasPalette() ) + { + aCompressor.StartCompression( *pGIF, pAcc->GetBitCount() ); + + for( i = 0; i < nHeight; i++ ) + { + if( nInterlaced ) + { + nY = i << 3; + + if( nY >= nHeight ) + { + nT = i - ( ( nHeight + 7 ) >> 3 ); + nY= ( nT << 3 ) + 4; + + if( nY >= nHeight ) + { + nT -= ( nHeight + 3 ) >> 3; + nY = ( nT << 2 ) + 2; + + if ( nY >= nHeight ) + { + nT -= ( ( nHeight + 1 ) >> 2 ); + nY = ( nT << 1 ) + 1; + } + } + } + } + else + nY = i; + + if( bNative ) + aCompressor.Compress( pAcc->GetScanline( nY ), nWidth ); + else + { + for( long nX = 0L; nX < nWidth; nX++ ) + pBuffer[ nX ] = (BYTE) pAcc->GetPixel( nY, nX ); + + aCompressor.Compress( pBuffer, nWidth ); + } + + if ( pGIF->GetError() ) + bStatus = FALSE; + + MayCallback( nMinPercent + ( nMaxPercent - nMinPercent ) * i / nHeight ); + + if( !bStatus ) + break; + } + + aCompressor.EndCompression(); + + if ( pGIF->GetError() ) + bStatus = FALSE; + } + + delete[] pBuffer; +} + +// ------------------------------------------------------------------------ + +void GIFWriter::WriteTerminator() +{ + if( bStatus ) + { + *pGIF << (BYTE) 0x3b; + + if( pGIF->GetError() ) + bStatus = FALSE; + } +} + +// ------------------------------------------------------------------------ + +extern "C" BOOL __LOADONCALLAPI GraphicExport( SvStream& rStream, Graphic& rGraphic, + FilterConfigItem* pConfigItem, BOOL ) +{ + return GIFWriter().WriteGIF( rGraphic, rStream, pConfigItem ); +} + +// ------------------------------------------------------------------------ |