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optimizations.

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2005-08-08  Sven Neumann  <sven@gimp.org>

	* app/base/siox.c (find_max_blob): optimizations.
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Sven Neumann
2005-08-08 04:49:44 +00:00
committed by Sven Neumann
parent 3f9144e534
commit 64614aa4fd
2 changed files with 44 additions and 33 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
2005-08-08 Sven Neumann <sven@gimp.org>
* app/base/siox.c (find_max_blob): optimizations.
2005-08-08 Sven Neumann <sven@gimp.org>
* app/base/siox.c (find_max_blob): fixed for offsetted regions.

73
app/base/siox.c
View File

@ -599,46 +599,53 @@ find_max_blob (TileManager *mask,
{
gint regioncount = 0;
if (labelfield[i] == 0 && (*d & 0x80))
g_queue_push_tail (q, GINT_TO_POINTER (i));
if (labelfield[i])
continue;
if (! (*d & 0x80))
{
labelfield[i] = -1;
continue;
}
g_queue_push_tail (q, GINT_TO_POINTER (i));
while (! g_queue_is_empty (q))
{
gint pos = GPOINTER_TO_INT (g_queue_pop_head (q));
gint pos = GPOINTER_TO_INT (g_queue_pop_head (q));
gint pos_x;
gint pos_y;
guchar val;
if (G_UNLIKELY (pos < 0 || pos >= length))
if (labelfield[pos])
continue;
pos_x = pos % width;
pos_y = pos / width;
read_pixel_data_1 (mask, x + pos_x, y + pos_y, &val);
if (val & 0x80)
{
g_warning ("%s: should never get here", G_STRLOC);
continue;
labelfield[pos] = curlabel;
regioncount++;
if (pos_x + 1 < width && ! labelfield[pos + 1])
g_queue_push_tail (q, GINT_TO_POINTER (pos + 1));
if (pos_x > 0 && ! labelfield[pos - 1])
g_queue_push_tail (q, GINT_TO_POINTER (pos - 1));
if (pos_y + 1 < height && ! labelfield[pos + width])
g_queue_push_tail (q, GINT_TO_POINTER (pos + width));
if (pos_y > 0 && ! labelfield[pos - width])
g_queue_push_tail (q, GINT_TO_POINTER (pos - width));
}
if (labelfield[pos] == 0)
else
{
guchar val;
gint pos_x = pos % width;
gint pos_y = pos / width;
read_pixel_data_1 (mask, x + pos_x, y + pos_y, &val);
if (val & 0x80)
{
labelfield[pos] = curlabel;
regioncount++;
if (pos_x + 1 < width)
g_queue_push_tail (q,
GINT_TO_POINTER (pos + 1));
if (pos_x > 0)
g_queue_push_tail (q,
GINT_TO_POINTER (pos - 1));
if (pos_y + 1 < height)
g_queue_push_tail (q,
GINT_TO_POINTER (pos + width));
if (pos_y > 0)
g_queue_push_tail (q,
GINT_TO_POINTER (pos - width));
}
labelfield[pos] = -1;
}
}