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29 lines
1.2 KiB
C
29 lines
1.2 KiB
C
#ifndef BYTESWAPDEFS_H
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#define BYTESWAPDEFS_H 1
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/****************************************************************/
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/* */
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/* swap halves of a single 4-byte word */
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/* */
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/****************************************************************/
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static inline unsigned int swapx(unsigned int word) {
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return (((word >> 16) & 0xffff) | ((word & 0xffff) << 16));
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}
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/****************************************************************/
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/* */
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/* Byte-swap a single 2-byte word */
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/* */
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/****************************************************************/
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static inline unsigned short byte_swap_word(unsigned short word) {
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return ((word >> 8) | (unsigned short)((word & 0xff) << 8));
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}
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void byte_swap_page(unsigned short *page, int wordcount);
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void word_swap_page(unsigned short *page, int longwordcount);
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void bit_reverse_region(unsigned short *top, int width, int height, int rasterwidth);
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#ifdef RESWAPPEDCODESTREAM
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unsigned int byte_swap_code_block(unsigned int *base);
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#endif
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#endif
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