| 144 |
|
if (fgetresolu(&xmax, &ymax, fin) != (YMAJOR|YDECR)) |
| 145 |
|
quiterr("bad picture size"); |
| 146 |
|
/* set view parameters */ |
| 147 |
< |
if (gotview) |
| 147 |
> |
if (gotview) { |
| 148 |
> |
ourview.hresolu = xmax; |
| 149 |
> |
ourview.vresolu = ymax; |
| 150 |
|
if (setview(&ourview) != NULL) |
| 151 |
|
gotview = 0; |
| 152 |
< |
|
| 152 |
> |
} |
| 153 |
|
if ((scanline = (COLR *)malloc(xmax*sizeof(COLR))) == NULL) |
| 154 |
|
quiterr("out of memory"); |
| 155 |
|
|
| 648 |
|
int y; |
| 649 |
|
register rgbpixel *l3; |
| 650 |
|
{ |
| 651 |
< |
register BYTE *l4; |
| 652 |
< |
register int shift, c; |
| 651 |
< |
int i; |
| 652 |
< |
|
| 651 |
> |
register int i; |
| 652 |
> |
/* read scanline */ |
| 653 |
|
if (getscan(y) < 0) |
| 654 |
|
quiterr("cannot seek for picreadline"); |
| 655 |
|
/* convert scanline */ |
| 656 |
< |
for (l4=scanline[0], i=xmax; i--; l4+=4, l3++) { |
| 657 |
< |
shift = l4[EXP] - COLXS + scale; |
| 658 |
< |
if (shift >= 8) { |
| 659 |
< |
l3->r = l3->g = l3->b = 255; |
| 660 |
< |
} else if (shift <= -8) { |
| 661 |
< |
l3->r = l3->g = l3->b = 0; |
| 662 |
< |
} else if (shift > 0) { |
| 663 |
< |
c = l4[RED] << shift; |
| 664 |
< |
l3->r = c > 255 ? 255 : c; |
| 665 |
< |
c = l4[GRN] << shift; |
| 666 |
< |
l3->g = c > 255 ? 255 : c; |
| 667 |
< |
c = l4[BLU] << shift; |
| 668 |
< |
l3->b = c > 255 ? 255 : c; |
| 669 |
< |
} else if (shift < 0) { |
| 670 |
< |
l3->r = l4[RED] >> -shift; |
| 671 |
< |
l3->g = l4[GRN] >> -shift; |
| 672 |
< |
l3->b = l4[BLU] >> -shift; |
| 673 |
< |
} else { |
| 674 |
< |
l3->r = l4[RED]; |
| 675 |
< |
l3->g = l4[GRN]; |
| 676 |
< |
l3->b = l4[BLU]; |
| 677 |
< |
} |
| 656 |
> |
if (scale != 0) |
| 657 |
> |
for (i = 0; i < xmax; i++) |
| 658 |
> |
if (scanline[i][EXP]+scale >= 0) |
| 659 |
> |
scanline[i][EXP] += scale; |
| 660 |
> |
normcolrs(scanline, xmax); |
| 661 |
> |
for (i = 0; i < xmax; i++) { |
| 662 |
> |
l3[i].r = scanline[i][RED]; |
| 663 |
> |
l3[i].g = scanline[i][GRN]; |
| 664 |
> |
l3[i].b = scanline[i][BLU]; |
| 665 |
|
} |
| 666 |
|
} |
| 667 |
|
|
