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parallelized. 

2005-02-16  Sven Neumann  <sven@gimp.org>

	* app/core/gimpimage-contiguous-region.c
	(gimp_image_contiguous_region_by_color): parallelized.
This commit is contained in:
Sven Neumann 2005-02-16 00:38:20 +00:00 committed by Sven Neumann
parent 637df82c71
commit 784fae02bb
2 changed files with 95 additions and 66 deletions
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6
ChangeLog
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@ -1,6 +1,10 @@
2005-02-16 Sven Neumann <sven@gimp.org>
* app/core/gimpdrawable-desaturate.c: parallelized.
* app/core/gimpimage-contiguous-region.c
(gimp_image_contiguous_region_by_color): parallelized.
* app/core/gimpdrawable-desaturate.c (gimp_drawable_desaturate):
parallelized.
2005-02-16 Sven Neumann <sven@gimp.org>

145
app/core/gimpimage-contiguous-region.c
View File

@ -26,6 +26,7 @@
#include "core-types.h"
#include "base/pixel-processor.h"
#include "base/pixel-region.h"
#include "base/tile.h"
#include "base/tile-manager.h"
@ -36,8 +37,26 @@
#include "gimppickable.h"
typedef struct
{
GimpImage *gimage;
GimpImageType type;
gboolean sample_merged;
gboolean antialias;
gint threshold;
gboolean select_transparent;
gboolean has_alpha;
gint color_bytes;
guchar color[MAX_CHANNELS];
} ContinuousRegionData;
/* local function prototypes */
static void contiguous_region_by_color (ContinuousRegionData *cont,
PixelRegion *imagePR,
PixelRegion *maskPR);
static gint pixel_difference (guchar *col1,
guchar *col2,
gboolean antialias,
@ -183,57 +202,51 @@ gimp_image_contiguous_region_by_color (GimpImage *gimage,
gboolean select_transparent,
const GimpRGB *color)
{
/* Scan over the gimage's active layer, finding pixels within the specified
* threshold from the given R, G, & B values. If antialiasing is on,
* use the same antialiasing scheme as in fuzzy_select. Modify the gimage's
* mask to reflect the additional selection
/* Scan over the gimage's active layer, finding pixels within the
* specified threshold from the given R, G, & B values. If
* antialiasing is on, use the same antialiasing scheme as in
* fuzzy_select. Modify the gimage's mask to reflect the
* additional selection
*/
GimpPickable *pickable;
TileManager *tiles;
GimpChannel *mask;
PixelRegion imagePR, maskPR;
guchar *image_data;
guchar *mask_data;
guchar *idata, *mdata;
guchar rgb[MAX_CHANNELS];
gint has_alpha, indexed;
gint width, height;
gint bytes, color_bytes, alpha;
gint i, j;
gpointer pr;
GimpImageType d_type;
guchar col[MAX_CHANNELS];
ContinuousRegionData cont;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), NULL);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (color != NULL, NULL);
gimp_rgba_get_uchar (color, &col[0], &col[1], &col[2], &col[3]);
gimp_rgba_get_uchar (color,
cont.color + 0,
cont.color + 1,
cont.color + 2,
cont.color + 3);
if (sample_merged)
pickable = GIMP_PICKABLE (gimage->projection);
else
pickable = GIMP_PICKABLE (drawable);
d_type = gimp_pickable_get_image_type (pickable);
bytes = GIMP_IMAGE_TYPE_BYTES (d_type);
has_alpha = GIMP_IMAGE_TYPE_HAS_ALPHA (d_type);
indexed = GIMP_IMAGE_TYPE_IS_INDEXED (d_type);
cont.type = gimp_pickable_get_image_type (pickable);
cont.has_alpha = GIMP_IMAGE_TYPE_HAS_ALPHA (cont.type);
tiles = gimp_pickable_get_tiles (pickable);
width = tile_manager_width (tiles);
height = tile_manager_height (tiles);
pixel_region_init (&imagePR, tiles,
0, 0, width, height, FALSE);
pixel_region_init (&imagePR, tiles, 0, 0, width, height, FALSE);
if (has_alpha)
if (cont.has_alpha)
{
if (select_transparent)
{
/* don't select transparancy if "color" isn't fully transparent
*/
if (col[3] > 0)
if (cont.color[3] > 0)
select_transparent = FALSE;
}
}
@ -242,56 +255,31 @@ gimp_image_contiguous_region_by_color (GimpImage *gimage,
select_transparent = FALSE;
}
if (indexed)
if (GIMP_IMAGE_TYPE_IS_INDEXED (cont.type))
{
/* indexed colors are always RGB or RGBA */
color_bytes = has_alpha ? 4 : 3;
cont.color_bytes = cont.has_alpha ? 4 : 3;
}
else
{
/* RGB, RGBA, GRAY and GRAYA colors are shaped just like the image */
color_bytes = bytes;
cont.color_bytes = imagePR.bytes;
}
alpha = bytes - 1;
cont.gimage = gimage;
cont.antialias = antialias;
cont.threshold = threshold;
cont.select_transparent = select_transparent;
mask = gimp_channel_new_mask (gimage, width, height);
pixel_region_init (&maskPR, gimp_drawable_data (GIMP_DRAWABLE (mask)),
0, 0,
width, height,
0, 0, width, height,
TRUE);
/* iterate over the entire image */
for (pr = pixel_regions_register (2, &imagePR, &maskPR);
pr != NULL;
pr = pixel_regions_process (pr))
{
image_data = imagePR.data;
mask_data = maskPR.data;
for (i = 0; i < imagePR.h; i++)
{
idata = image_data;
mdata = mask_data;
for (j = 0; j < imagePR.w; j++)
{
/* Get the rgb values for the color */
gimp_image_get_color (gimage, d_type, idata, rgb);
/* Find how closely the colors match */
*mdata++ = pixel_difference (col, rgb,
antialias, threshold,
color_bytes,
has_alpha, select_transparent);
idata += bytes;
}
image_data += imagePR.rowstride;
mask_data += maskPR.rowstride;
}
}
pixel_regions_process_parallel ((PixelProcessorFunc)
contiguous_region_by_color, &cont,
2, &imagePR, &maskPR);
return mask;
}
@ -299,6 +287,43 @@ gimp_image_contiguous_region_by_color (GimpImage *gimage,
/* private functions */
static void
contiguous_region_by_color (ContinuousRegionData *cont,
PixelRegion *imagePR,
PixelRegion *maskPR)
{
const guchar *image = imagePR->data;
guchar *mask = maskPR->data;
gint x, y;
for (y = 0; y < imagePR->h; y++)
{
const guchar *i = image;
guchar *m = mask;
for (x = 0; x < imagePR->w; x++)
{
guchar rgb[MAX_CHANNELS];
/* Get the rgb values for the color */
gimp_image_get_color (cont->gimage, cont->type, i, rgb);
/* Find how closely the colors match */
*m++ = pixel_difference (cont->color, rgb,
cont->antialias,
cont->threshold,
cont->color_bytes,
cont->has_alpha,
cont->select_transparent);
i += imagePR->bytes;
}
image += imagePR->rowstride;
mask += maskPR->rowstride;
}
}
static gint
pixel_difference (guchar *col1,
guchar *col2,