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Cleanup warnings from byte swapping routines

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This commit is contained in:
Nick Briggs 2022-12-31 11:09:34 -08:00
parent d98df4f8d3
commit 766de557bb
2 changed files with 7 additions and 5 deletions
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2
inc/byteswapdefs.h
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@ -10,7 +10,7 @@ static inline unsigned int swapx(unsigned int word) {
return (((word >> 16) & 0xffff) | ((word & 0xffff) << 16));
}
void word_swap_page(unsigned short *page, int longwordcount);
void word_swap_page(void *page, unsigned longwordcount);
void bit_reverse_region(unsigned short *top, int width, int height, int rasterwidth);
#ifdef RESWAPPEDCODESTREAM
unsigned int byte_swap_code_block(unsigned int *base);

10
src/byteswap.c
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@ -28,9 +28,9 @@
/* Byte- & word-swap a region wordcount long-words long */
/* */
/****************************************************************/
void word_swap_page(unsigned short *page, int longwordcount) {
void word_swap_page(void *page, unsigned longwordcount) {
unsigned int *longpage = (unsigned int *)page;
for (int i = 0; i < longwordcount; i++) { *(longpage + i) = ntohl(*(longpage + i)); }
for (unsigned int i = 0; i < longwordcount; i++) { *(longpage + i) = ntohl(*(longpage + i)); }
}
/****************************************************************/
@ -39,6 +39,7 @@ void word_swap_page(unsigned short *page, int longwordcount) {
/* */
/****************************************************************/
extern const unsigned char reversedbits[256];
const unsigned char reversedbits[256] = {
/* table of bytes with their bits reversed */
0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
@ -80,10 +81,11 @@ const unsigned char reversedbits[256] = {
return ((reversedbits[(word>>8) & 0xFF] <<8) | reversedbits[word & 0xff]);
}
******/
#define reverse_bits(word) ((reversedbits[((word) >> 8) & 0xFF] << 8) | reversedbits[(word)&0xff])
#define reverse_bits(word) (DLword)((reversedbits[((word) >> 8) & 0xFF] << 8) | reversedbits[(word)&0xff])
void bit_reverse_region(unsigned short *top, int width, int height, int rasterwidth) {
int i, j, wordwid = ((width + 31) >> 5) << 1;
int i;
unsigned j, wordwid = (((unsigned)width + 31) >> 5) << 1;
unsigned short *word;
for (i = 0; i < height; i++) {