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another micro optimization

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This commit is contained in:
Sven Neumann 2004-12-22 00:03:33 +00:00
parent e59cc07dcd
commit 7e209bf5b8
1 changed files with 13 additions and 11 deletions
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24
plug-ins/common/unsharp.c
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@ -275,8 +275,8 @@ blur_line (const gdouble *ctable,
{
for (row = 0; row < len; row++)
{
scale = 0;
/* find the scale factor */
scale = 0;
for (j = 0; j < len; j++)
{
/* if the index is in bounds, add it to the scale counter */
@ -452,7 +452,7 @@ unsharp_region (GimpPixelRgn *srcPR,
blur_line (ctable, cmatrix, cmatrix_length, src, dest, width, bytes);
gimp_pixel_rgn_set_row (destPR, dest, x1, y1 + row, width);
if (show_progress && row % 5 == 0)
if (show_progress && row % 8 == 0)
gimp_progress_update ((gdouble) row / (3 * height));
}
@ -463,7 +463,7 @@ unsharp_region (GimpPixelRgn *srcPR,
blur_line (ctable, cmatrix, cmatrix_length, src, dest, height, bytes);
gimp_pixel_rgn_set_col (destPR, dest, x1 + col, y1, height);
if (show_progress && col % 5 == 0)
if (show_progress && col % 8 == 0)
gimp_progress_update ((gdouble) col / (3 * width) + 0.33);
}
@ -474,8 +474,10 @@ unsharp_region (GimpPixelRgn *srcPR,
the blurred version) images */
for (row = 0; row < height; row++)
{
gint value = 0;
gint u, v;
const guchar *s = src;
guchar *d = dest;
gint value = 0;
gint u, v;
/* get source row */
gimp_pixel_rgn_get_row (srcPR, src, x1, y1 + row, width);
@ -488,19 +490,18 @@ unsharp_region (GimpPixelRgn *srcPR,
{
for (v = 0; v < bytes; v++)
{
gint diff = (src[u * bytes + v] - dest[u * bytes + v]);
gint diff = *s - *d;
/* do tresholding */
if (abs (2 * diff) < threshold)
diff = 0;
value = src[u * bytes + v] + amount * diff;
dest[u * bytes + v] = CLAMP (value, 0, 255);
value = *s++ + amount * diff;
*d++ = CLAMP (value, 0, 255);
}
}
/* update progress bar every five rows */
if (show_progress && row % 5 == 0)
if (show_progress && row % 8 == 0)
gimp_progress_update ((gdouble) row / (3 * height) + 0.67);
gimp_pixel_rgn_set_row (destPR, dest, x1, y1 + row, width);
@ -591,6 +592,7 @@ gen_convolve_matrix (gdouble radius,
sum = 0;
for (i = 0; i < matrix_length; i++)
sum += cmatrix[i];
for (i = 0; i < matrix_length; i++)
cmatrix[i] = cmatrix[i] / sum;