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47 lines
1.5 KiB
47 lines
1.5 KiB
/*
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* Copyright (C) 2002 RealVNC Ltd. All Rights Reserved.
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* Copyright (C) 2003 Sun Microsystems, Inc.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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/*
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* The PaletteHelper class helps us build up the palette from pixel data by
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* storing a reverse index using a simple hash-table
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*/
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#ifndef __ZRLE_PALETTE_HELPER_H__
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#define __ZRLE_PALETTE_HELPER_H__
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#include <zrletypes.h>
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#define ZRLE_PALETTE_MAX_SIZE 127
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typedef struct {
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zrle_U32 palette[ZRLE_PALETTE_MAX_SIZE];
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zrle_U8 index[ZRLE_PALETTE_MAX_SIZE + 4096];
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zrle_U32 key[ZRLE_PALETTE_MAX_SIZE + 4096];
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int size;
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} zrlePaletteHelper;
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void zrlePaletteHelperInit (zrlePaletteHelper *helper);
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void zrlePaletteHelperInsert(zrlePaletteHelper *helper,
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zrle_U32 pix);
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int zrlePaletteHelperLookup(zrlePaletteHelper *helper,
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zrle_U32 pix);
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#endif /* __ZRLE_PALETTE_HELPER_H__ */
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