| 12 |
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| 13 |
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#include <stdio.h> |
| 14 |
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| 15 |
+ |
#include <math.h> |
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+ |
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#include "color.h" |
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#define MINELEN 8 /* minimum scanline length for encoding */ |
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+ |
#define MAXELEN 0x7fff /* maximum scanline length for encoding */ |
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#define MINRUN 4 /* minimum run length */ |
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| 20 |
– |
#ifndef frexp |
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– |
extern double frexp(); |
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– |
#endif |
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| 24 |
– |
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| 24 |
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char * |
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tempbuffer(len) /* get a temporary buffer */ |
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unsigned len; |
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{ |
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extern char *malloc(), *realloc(); |
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static char *tempbuf = NULL; |
| 30 |
< |
static int tempbuflen = 0; |
| 30 |
> |
static unsigned tempbuflen = 0; |
| 31 |
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| 32 |
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if (len > tempbuflen) { |
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if (tempbuflen > 0) |
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register int i, j, beg, cnt; |
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int c2; |
| 50 |
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| 51 |
< |
if (len < MINELEN | len > 0x7fff) /* OOBs, write out flat */ |
| 51 |
> |
if (len < MINELEN | len > MAXELEN) /* OOBs, write out flat */ |
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return(fwrite((char *)scanline,sizeof(COLR),len,fp) - len); |
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/* put magic header */ |
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putc(2, fp); |
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register FILE *fp; |
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{ |
| 100 |
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register int i, j; |
| 101 |
< |
int code; |
| 101 |
> |
int code, val; |
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/* determine scanline type */ |
| 103 |
< |
if (len < MINELEN | len > 0x7fff) |
| 103 |
> |
if (len < MINELEN | len > MAXELEN) |
| 104 |
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return(oldreadcolrs(scanline, len, fp)); |
| 105 |
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if ((i = getc(fp)) == EOF) |
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return(-1); |
| 125 |
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if ((code = getc(fp)) == EOF) |
| 126 |
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return(-1); |
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if (code > 128) { /* run */ |
| 128 |
< |
scanline[j++][i] = getc(fp); |
| 129 |
< |
for (code &= 127; --code; j++) |
| 130 |
< |
scanline[j][i] = scanline[j-1][i]; |
| 128 |
> |
code &= 127; |
| 129 |
> |
val = getc(fp); |
| 130 |
> |
while (code--) |
| 131 |
> |
scanline[j++][i] = val; |
| 132 |
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} else /* non-run */ |
| 133 |
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while (code--) |
| 134 |
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scanline[j++][i] = getc(fp); |
