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Enable RLE coding for PCX output

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Pulled from DarkPlaces's lmp2pcx tool, which I have just been made aware
of.
This commit is contained in:
Jeff Teunissen 2011-01-09 03:06:25 -05:00
parent e819ea3b7f
commit af8c1e4cc2
1 changed files with 12 additions and 7 deletions
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19
libs/image/pcx.c
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@ -177,15 +177,20 @@ EncodePCX (byte * data, int width, int height,
data += rowbytes * (height - 1);
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++) {
if ((*data & 0xc0) != 0xc0)
*pack++ = *data++;
else {
*pack++ = 0xc1;
*pack++ = *data++;
}
// from darkplaces lmp2pcx
for (dataend = data + width; data < dataend; /* empty */) {
for (pix = *data++, run = 0xC1;
data < dataend && run < 0xFF && *data == pix;
data++, run++)
/* empty */;
if (run > 0xC1 || pix >= 0xC0)
*pack++ = run;
*pack++ = pix;
}
if (width & 1)
*pack++ = 0;
data += rowbytes - width;
if (flip)
data -= rowbytes * 2;