61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/*
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* Copyright (c) 1993-1995 by Argonaut Technologies Limited. All rights reserved.
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*
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* $Id: colour.h 1.2 1998/11/13 16:22:33 jon Exp $
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* $Locker: $
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*
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* Colour type and macros
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*
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*/
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#ifndef _COLOUR_H_
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#define _COLOUR_H_
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typedef unsigned long int br_colour;
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/*
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* N.B. Colour ranges are specified in the format of the pixelmap to which
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* they refer. For indexed pixelmaps they specify a range of indices.
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* For RGB and YUV pixelmaps they specify a cube of colours in the
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* colourspace bounded by the planes obtained by separating out each
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* component from the low and high bounds.
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*
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* Note that the range is always specified inclusively.
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*/
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typedef struct br_colour_range {
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br_uint_32 low;
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br_uint_32 high;
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} br_colour_range;
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#define BR_COLOUR_RGB(r,g,b) \
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((((unsigned int)(r))<<16) |\
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(((unsigned int)(g))<<8) |\
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((unsigned int)(b)))
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#define BR_COLOUR_RGBA(r,g,b,a) \
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((((unsigned int)(a))<<24) |\
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(((unsigned int)(r))<<16) |\
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(((unsigned int)(g))<<8) |\
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((unsigned int)(b)))
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#define BR_COLOUR_ARGB(a,r,g,b) \
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((((unsigned int)(a))<<24) |\
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(((unsigned int)(r))<<16) |\
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(((unsigned int)(g))<<8) |\
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((unsigned int)(b)))
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#define BR_COLOUR_565(r,g,b) \
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((((unsigned int)(r))<<11) |\
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(((unsigned int)(g))<<5) |\
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((unsigned int)(b)))
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#define BR_ALPHA(c) (((c) >> 24) & 0xFF)
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#define BR_RED(c) (((c) >> 16) & 0xFF)
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#define BR_GRN(c) (((c) >> 8) & 0xFF)
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#define BR_BLU(c) ((c) & 0xFF)
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#define BR_RED_565(c) (((c) >> 11 & 31))
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#define BR_GRN_565(c) (((c) >> 5) & 63)
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#define BR_BLU_565(c) ((c) & 31)
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#endif
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