64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/*
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* \brief Generic blitting utilities.
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* \author Norman Feske
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* \date 2007-10-10
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*/
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/*
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* Copyright (C) 2007-2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _LIB__BLIT__BLIT_HELPER_H_
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#define _LIB__BLIT__BLIT_HELPER_H_
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#include <util/string.h>
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/**
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* Copy single 16bit column
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*/
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static inline void copy_16bit_column(char const *src, int src_w,
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char *dst, int dst_w, int h)
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{
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for (; h-- > 0; src += src_w, dst += dst_w)
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Genode::memcpy(dst, src, 2);
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}
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/**
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* Copy pixel block 32bit-wise
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*
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* \param src source address
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* \param dst 32bit-aligned destination address
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* \param w number of 32bit words to copy per line
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* \param h number of lines to copy
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* \param src_w width of source buffer in bytes
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* \param dst_w width of destination buffer in bytes
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*/
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static void copy_block_32bit(char const *src, int src_w,
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char *dst, int dst_w,
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int w, int h)
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{
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for (; h-- > 0; src += src_w, dst += dst_w)
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Genode::memcpy(dst, src, 4*w);
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}
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/**
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* Copy block with a size of multiple of 32 bytes
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*
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* \param w width in 32 byte chunks to copy per line
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* \param h number of lines of copy
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*/
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static inline void copy_block_32byte(char const *src, int src_w,
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char *dst, int dst_w,
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int w, int h)
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{
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for (; h-- > 0; src += src_w, dst += dst_w)
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Genode::memcpy(dst, src, 32*w);
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}
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#endif /* _LIB__BLIT__BLIT_HELPER_H_ */
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