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/*************************************************************************
*
* 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.
*
************************************************************************/
#ifndef _GIFREAD_HXX
#define _GIFREAD_HXX
#ifndef _GRAPH_HXX
#include <vcl/graph.hxx>
#endif
#ifndef _BMPACC_HXX
#include <vcl/bmpacc.hxx>
#endif
#ifdef _GIFPRIVATE
// ---------
// - Enums -
// ---------
enum GIFAction
{
GLOBAL_HEADER_READING,
MARKER_READING,
EXTENSION_READING,
LOCAL_HEADER_READING,
FIRST_BLOCK_READING,
NEXT_BLOCK_READING,
ABORT_READING,
END_READING
};
// ------------------------------------------------------------------------
enum ReadState
{
GIFREAD_OK,
GIFREAD_ERROR,
GIFREAD_NEED_MORE
};
// -------------
// - GIFReader -
// -------------
class GIFLZWDecompressor;
class SvStream;
class GIFReader : public GraphicReader
{
Graphic aImGraphic;
Animation aAnimation;
Bitmap aBmp8;
Bitmap aBmp1;
BitmapPalette aGPalette;
BitmapPalette aLPalette;
SvStream& rIStm;
void* pCallerData;
HPBYTE pSrcBuf;
GIFLZWDecompressor* pDecomp;
BitmapWriteAccess* pAcc8;
BitmapWriteAccess* pAcc1;
long nYAcc;
long nLastPos;
sal_uInt32 nLogWidth100;
sal_uInt32 nLogHeight100;
sal_uInt16 nTimer;
sal_uInt16 nGlobalWidth; // maximale Bildbreite aus Header
sal_uInt16 nGlobalHeight; // maximale Bildhoehe aus Header
sal_uInt16 nImageWidth; // maximale Bildbreite aus Header
sal_uInt16 nImageHeight; // maximale Bildhoehe aus Header
sal_uInt16 nImagePosX;
sal_uInt16 nImagePosY;
sal_uInt16 nImageX; // maximale Bildbreite aus Header
sal_uInt16 nImageY; // maximale Bildhoehe aus Header
sal_uInt16 nLastImageY;
sal_uInt16 nLastInterCount;
sal_uInt16 nLoops;
GIFAction eActAction;
sal_Bool bStatus;
sal_Bool bGCTransparent; // Ob das Bild Transparent ist, wenn ja:
sal_Bool bInterlaced;
sal_Bool bOverreadBlock;
sal_Bool bImGraphicReady;
sal_Bool bGlobalPalette;
sal_uInt8 nBackgroundColor; // Hintergrundfarbe
sal_uInt8 nGCTransparentIndex; // Pixel von diesem Index sind durchsichtig
sal_uInt8 nGCDisposalMethod; // 'Disposal Method' (siehe GIF-Doku)
sal_uInt8 cTransIndex1;
sal_uInt8 cNonTransIndex1;
void ReadPaletteEntries( BitmapPalette* pPal, sal_uLong nCount );
void ClearImageExtensions();
sal_Bool CreateBitmaps( long nWidth, long nHeight, BitmapPalette* pPal, sal_Bool bWatchForBackgroundColor );
sal_Bool ReadGlobalHeader();
sal_Bool ReadExtension();
sal_Bool ReadLocalHeader();
sal_uLong ReadNextBlock();
void FillImages( HPBYTE pBytes, sal_uLong nCount );
void CreateNewBitmaps();
sal_Bool ProcessGIF();
public:
ReadState ReadGIF( Graphic& rGraphic );
const Graphic& GetIntermediateGraphic();
GIFReader( SvStream& rStm );
virtual ~GIFReader();
};
#endif // _GIFPRIVATE
// -------------
// - ImportGIF -
// -------------
sal_Bool ImportGIF( SvStream& rStream, Graphic& rGraphic );
#endif // _GIFREAD_HXX
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