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/* -*- 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 .
*/
#ifndef _GIFREAD_HXX
#define _GIFREAD_HXX
#include <bf_svtools/bf_solar.h>
#include <vcl/graph.hxx>
#include <vcl/bmpacc.hxx>
class SvStream;
namespace binfilter
{
#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 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;
USHORT nTimer;
USHORT nGlobalWidth; // maximale Bildbreite aus Header
USHORT nGlobalHeight; // maximale Bildhoehe aus Header
USHORT nImageWidth; // maximale Bildbreite aus Header
USHORT nImageHeight; // maximale Bildhoehe aus Header
USHORT nImagePosX;
USHORT nImagePosY;
USHORT nImageX; // maximale Bildbreite aus Header
USHORT nImageY; // maximale Bildhoehe aus Header
USHORT nLastImageY;
USHORT nLastInterCount;
USHORT nLoops;
GIFAction eActAction;
BOOL bStatus;
BOOL bGCTransparent; // Ob das Bild Transparent ist, wenn ja:
BOOL bInterlaced;
BOOL bOverreadBlock;
BOOL bImGraphicReady;
BOOL bGlobalPalette;
BYTE nBackgroundColor; // Hintergrundfarbe
BYTE nGCTransparentIndex; // Pixel von diesem Index sind durchsichtig
BYTE nGCDisposalMethod; // 'Disposal Method' (siehe GIF-Doku)
BYTE cTransIndex1;
BYTE cNonTransIndex1;
void ReadPaletteEntries( BitmapPalette* pPal, ULONG nCount );
void ClearImageExtensions();
BOOL CreateBitmaps( long nWidth, long nHeight, BitmapPalette* pPal, BOOL bWatchForBackgroundColor );
BOOL ReadGlobalHeader();
BOOL ReadExtension();
BOOL ReadLocalHeader();
ULONG ReadNextBlock();
void FillImages( HPBYTE pBytes, ULONG nCount );
void CreateNewBitmaps();
BOOL ProcessGIF();
public:
ReadState ReadGIF( Graphic& rGraphic );
const Graphic& GetIntermediateGraphic();
GIFReader( SvStream& rStm );
virtual ~GIFReader();
};
#endif // _GIFPRIVATE
// -------------
// - ImportGIF -
// -------------
BOOL ImportGIF( SvStream& rStream, Graphic& rGraphic );
}
#endif // _GIFREAD_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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