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https://github.com/libretro/scummvm.git
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88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2002 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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 program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*/
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#ifndef COMMON_UTIL_H
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#define COMMON_UTIL_H
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#include "scummsys.h"
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#ifndef ABS
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#define ABS(x) ((x)>=0?(x):-(x))
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#endif
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#ifndef MIN
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#define MIN(a,b) (((a)<(b))?(a):(b))
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#endif
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#ifndef MAX
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#define MAX(a,b) (((a)>(b))?(a):(b))
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#endif
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static inline void SWAP(int &a, int &b) { int tmp=a; a=b; b=tmp; }
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#define ARRAYSIZE(x) (sizeof(x)/sizeof(x[0]))
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#if USE_555_FORMAT
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// Assume the 16 bit graphics data is in 5-5-5 format
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#define RGB_TO_16(r,g,b) (((((r)>>3)&0x1F) << 10) | ((((g)>>3)&0x1F) << 5) | (((b)>>3)&0x1F))
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#define RED_FROM_16(x) ((((x)>>10)&0x1F) << 3)
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#define GREEN_FROM_16(x) ((((x)>>5)&0x1F) << 3)
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#define BLUE_FROM_16(x) (((x)&0x1F) << 3)
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#elif defined(__GP32__) //ph0x
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// GP32 format 5-5-5-1 (first bit means intensity)
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#define RGB_TO_16(r,g,b) (((((r)>>3)&0x1F) << 11) | ((((g)>>3)&0x1F) << 6) | (((b)>>3)&0x1F)<<1)
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#define RED_FROM_16(x) ((((x)>>11)&0x1F) << 3)
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#define GREEN_FROM_16(x) ((((x)>>6) &0x1F) << 3)
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#define BLUE_FROM_16(x) ((((x)>>1) &0x1F) << 3)
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#else
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// Assume the 16 bit graphics data is in 5-6-5 format
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#define RGB_TO_16(r,g,b) (((((r)>>3)&0x1F) << 11) | ((((g)>>2)&0x3F) << 5) | (((b)>>3)&0x1F))
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#define RED_FROM_16(x) ((((x)>>11)&0x1F) << 3)
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#define GREEN_FROM_16(x) ((((x)>>5)&0x3F) << 2)
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#define BLUE_FROM_16(x) (((x)&0x1F) << 3)
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#endif
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int RGBMatch(byte *palette, int r, int g, int b);
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int Blend(int src, int dst, byte *palette);
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void ClearBlendCache(byte *palette, int weight);
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/*
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* Print hexdump of the data passed in, 8 bytes a row
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*/
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void hexdump(const byte * data, int len);
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// Resource string length
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int resStrLen(const char *src);
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class RandomSource {
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private:
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uint32 _randSeed;
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public:
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RandomSource(uint32 seed = 0xA943DE33);
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void setSeed(uint32 seed);
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uint getRandomNumber(uint max);
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uint getRandomNumberRng(uint min, uint max);
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};
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#endif
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