| 47 |
|
|
| 48 |
|
char errmsg[128]; |
| 49 |
|
|
| 50 |
< |
COLR *inline; |
| 50 |
> |
COLR *inl; |
| 51 |
|
|
| 52 |
|
int xmax, ymax; |
| 53 |
|
|
| 102 |
|
quiterr(errmsg); |
| 103 |
|
} |
| 104 |
|
/* get header */ |
| 105 |
< |
if (fread(&head, sizeof(head), 1, stdin) != 1) |
| 105 |
> |
if (fread((char *)&head, sizeof(head), 1, stdin) != 1) |
| 106 |
|
quiterr("missing header"); |
| 107 |
|
if (head.ras_magic != RAS_MAGIC) |
| 108 |
|
quiterr("bad raster format"); |
| 113 |
|
head.ras_depth != 8) |
| 114 |
|
quiterr("incompatible format"); |
| 115 |
|
/* put header */ |
| 116 |
< |
printargs(argc, argv, stdout); |
| 116 |
> |
printargs(i, argv, stdout); |
| 117 |
> |
fputformat(COLRFMT, stdout); |
| 118 |
|
putchar('\n'); |
| 119 |
|
fputresolu(YMAJOR|YDECR, xmax, ymax, stdout); |
| 120 |
|
/* convert file */ |
| 186 |
|
p->fp = stdin; |
| 187 |
|
else if ((p->fp = fopen(fname, "r")) == NULL) |
| 188 |
|
return(NULL); |
| 189 |
< |
/* discard header */ |
| 190 |
< |
getheader(p->fp, NULL); |
| 191 |
< |
if (fgetresolu(&xmax, &ymax, p->fp) != (YMAJOR|YDECR)) |
| 192 |
< |
quiterr("bad picture size"); |
| 189 |
> |
/* check header */ |
| 190 |
> |
if (checkheader(p->fp, COLRFMT, NULL) < 0 || |
| 191 |
> |
fgetresolu(&xmax, &ymax, p->fp) != (YMAJOR|YDECR)) |
| 192 |
> |
quiterr("bad picture format"); |
| 193 |
|
p->nexty = 0; |
| 194 |
|
p->bytes_line = 0; /* variable length lines */ |
| 195 |
|
p->pos.y = (long *)ecalloc(ymax, sizeof(long)); |
| 204 |
|
h->ras_maptype = RMT_EQUAL_RGB; |
| 205 |
|
h->ras_maplength = 256*3; |
| 206 |
|
/* allocate scanline */ |
| 207 |
< |
inline = (COLR *)emalloc(xmax*sizeof(COLR)); |
| 207 |
> |
inl = (COLR *)emalloc(xmax*sizeof(COLR)); |
| 208 |
|
|
| 209 |
|
return(p); |
| 210 |
|
} |
| 224 |
|
else if ((p->fp = fopen(fname, "w")) == NULL) |
| 225 |
|
return(NULL); |
| 226 |
|
/* write header */ |
| 227 |
< |
fwrite(h, sizeof(*h), 1, p->fp); |
| 227 |
> |
fwrite((char *)h, sizeof(*h), 1, p->fp); |
| 228 |
|
p->nexty = -1; /* needs color map */ |
| 229 |
|
p->bytes_line = h->ras_width; |
| 230 |
|
p->pos.b = 0; |
| 244 |
|
scanline = (COLR *)emalloc(xmax*sizeof(COLR)); |
| 245 |
|
/* get color table */ |
| 246 |
|
for (i = 0; i < 3; i ++) |
| 247 |
< |
if (fread(cmap[i], h->ras_maplength/3, 1, stdin) != 1) |
| 247 |
> |
if (fread((char *)cmap[i], h->ras_maplength/3, 1, stdin) != 1) |
| 248 |
|
quiterr("error reading color table"); |
| 249 |
|
/* convert table */ |
| 250 |
|
for (i = 0; i < h->ras_maplength/3; i++) |
| 272 |
|
int y; |
| 273 |
|
register rgbpixel *l3; |
| 274 |
|
{ |
| 275 |
< |
register BYTE *l4; |
| 275 |
< |
register int shift, c; |
| 276 |
< |
int i; |
| 275 |
> |
register int i; |
| 276 |
|
|
| 277 |
< |
if (inpic->nexty != y) { /* find scanline */ |
| 277 |
> |
if (inpic->nexty != y) { /* find scanline */ |
| 278 |
|
if (inpic->bytes_line == 0) { |
| 279 |
|
if (inpic->pos.y[y] == 0) { |
| 280 |
|
while (inpic->nexty < y) { |
| 281 |
< |
if (freadcolrs(inline, xmax, inpic->fp) < 0) |
| 281 |
> |
if (freadcolrs(inl, xmax, inpic->fp) < 0) |
| 282 |
|
quiterr("read error in picreadline3"); |
| 283 |
|
inpic->pos.y[++inpic->nexty] = ftell(inpic->fp); |
| 284 |
|
} |
| 288 |
|
quiterr("seek error in picreadline3"); |
| 289 |
|
} else if (inpic->bytes_line == 0 && inpic->pos.y[inpic->nexty] == 0) |
| 290 |
|
inpic->pos.y[inpic->nexty] = ftell(inpic->fp); |
| 291 |
< |
if (freadcolrs(inline, xmax, inpic->fp) < 0) /* read scanline */ |
| 291 |
> |
if (freadcolrs(inl, xmax, inpic->fp) < 0) /* read scanline */ |
| 292 |
|
quiterr("read error in picreadline3"); |
| 293 |
|
inpic->nexty = y+1; |
| 294 |
|
/* convert scanline */ |
| 295 |
< |
for (l4=inline[0], i=xmax; i--; l4+=4, l3++) { |
| 296 |
< |
shift = l4[EXP] - COLXS; |
| 297 |
< |
if (shift >= 8) { |
| 298 |
< |
l3->r = l3->g = l3->b = 255; |
| 299 |
< |
} else if (shift <= -8) { |
| 301 |
< |
l3->r = l3->g = l3->b = 0; |
| 302 |
< |
} else if (shift > 0) { |
| 303 |
< |
c = l4[RED] << shift; |
| 304 |
< |
l3->r = c > 255 ? 255 : c; |
| 305 |
< |
c = l4[GRN] << shift; |
| 306 |
< |
l3->g = c > 255 ? 255 : c; |
| 307 |
< |
c = l4[BLU] << shift; |
| 308 |
< |
l3->b = c > 255 ? 255 : c; |
| 309 |
< |
} else if (shift < 0) { |
| 310 |
< |
l3->r = l4[RED] >> -shift; |
| 311 |
< |
l3->g = l4[GRN] >> -shift; |
| 312 |
< |
l3->b = l4[BLU] >> -shift; |
| 313 |
< |
} else { |
| 314 |
< |
l3->r = l4[RED]; |
| 315 |
< |
l3->g = l4[GRN]; |
| 316 |
< |
l3->b = l4[BLU]; |
| 317 |
< |
} |
| 295 |
> |
normcolrs(inl, xmax, 0); |
| 296 |
> |
for (i = 0; i < xmax; i++) { |
| 297 |
> |
l3[i].r = inl[i][RED]; |
| 298 |
> |
l3[i].g = inl[i][GRN]; |
| 299 |
> |
l3[i].b = inl[i][BLU]; |
| 300 |
|
} |
| 301 |
|
} |
| 302 |
|
|
| 315 |
|
quiterr("seek error in picwriteline"); |
| 316 |
|
} |
| 317 |
|
/* write scanline */ |
| 318 |
< |
if (fwrite(l, sizeof(pixel), xmax, outpic->fp) != xmax) |
| 318 |
> |
if (fwrite((char *)l, sizeof(pixel), xmax, outpic->fp) != xmax) |
| 319 |
|
quiterr("write error in picwriteline"); |
| 320 |
|
if (xmax&1) /* on 16-bit boundary */ |
| 321 |
|
putc(l[xmax-1], outpic->fp); |
| 350 |
|
register int i, val; |
| 351 |
|
|
| 352 |
|
for (i = 0; i < 256; i++) { |
| 353 |
< |
val = pow(i/256.0, 1.0/gamma) * 256.0; |
| 353 |
> |
val = pow((i+0.5)/256.0, 1.0/gamma) * 256.0; |
| 354 |
|
map[0][i] = map[1][i] = map[2][i] = val; |
| 355 |
|
} |
| 356 |
|
} |
