/*
* Copyright (c) 2011 Petr Koupy
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup libc
* @{
*/
/**
* @file
*/
#ifndef _LIBC_IO_PIXEL_H_
#define _LIBC_IO_PIXEL_H_
#include <stdint.h>
#define NARROW(channel, bits) \
((channel) >> (8 - (bits)))
#define INVERT(pixel) ((pixel) ^ 0x00ffffff)
#define ALPHA(pixel) ((pixel) >> 24)
#define RED(pixel) (((pixel) & 0x00ff0000) >> 16)
#define GREEN(pixel) (((pixel) & 0x0000ff00) >> 8)
#define BLUE(pixel) ((pixel) & 0x000000ff)
#define PIXEL(a, r, g, b) \
((((unsigned)(a) & 0xff) << 24) | (((unsigned)(r) & 0xff) << 16) | \
(((unsigned)(g) & 0xff) << 8) | ((unsigned)(b) & 0xff))
typedef uint32_t pixel_t;
#endif
/** @}
*/