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app: convert drawables between RGB and GRAY using gegl_buffer_copy()

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This commit is contained in:
Michael Natterer
2012-03-16 18:47:04 +01:00
parent 267d17d940
commit 299886d20d
1 changed files with 111 additions and 137 deletions
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134
app/core/gimpdrawable-convert.c
View File

@ -28,6 +28,8 @@
#include "base/pixel-region.h"
#include "base/tile-manager.h"
#include "gegl/gimp-gegl-utils.h"
#include "gimpdrawable.h"
#include "gimpdrawable-convert.h"
#include "gimpimage.h"
@ -89,15 +91,8 @@ void
gimp_drawable_convert_tiles_rgb (GimpDrawable *drawable,
TileManager *new_tiles)
{
PixelRegion srcPR, destPR;
gint row, col;
gint offset;
GimpImageType type;
gboolean has_alpha;
const guchar *src, *s;
guchar *dest, *d;
const guchar *cmap;
gpointer pr;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (new_tiles != NULL);
@ -107,6 +102,31 @@ gimp_drawable_convert_tiles_rgb (GimpDrawable *drawable,
g_return_if_fail (tile_manager_bpp (new_tiles) == (has_alpha ? 4 : 3));
switch (GIMP_IMAGE_TYPE_BASE_TYPE (type))
{
case GIMP_GRAY:
{
GeglBuffer *dest_buffer;
dest_buffer = gimp_tile_manager_create_buffer (new_tiles, TRUE);
gegl_buffer_copy (gimp_drawable_get_read_buffer (drawable), NULL,
dest_buffer, NULL);
g_object_unref (dest_buffer);
}
break;
case GIMP_INDEXED:
{
PixelRegion srcPR, destPR;
gint row, col;
gint offset;
const guchar *src, *s;
guchar *dest, *d;
const guchar *cmap;
gpointer pr;
cmap = gimp_drawable_get_colormap (drawable);
pixel_region_init (&srcPR, gimp_drawable_get_tiles (drawable),
@ -120,40 +140,6 @@ gimp_drawable_convert_tiles_rgb (GimpDrawable *drawable,
gimp_item_get_height (GIMP_ITEM (drawable)),
TRUE);
switch (GIMP_IMAGE_TYPE_BASE_TYPE (type))
{
case GIMP_GRAY:
for (pr = pixel_regions_register (2, &srcPR, &destPR);
pr != NULL;
pr = pixel_regions_process (pr))
{
src = srcPR.data;
dest = destPR.data;
for (row = 0; row < srcPR.h; row++)
{
s = src;
d = dest;
for (col = 0; col < srcPR.w; col++)
{
d[RED] = *s;
d[GREEN] = *s;
d[BLUE] = *s;
d += 3;
s++;
if (has_alpha)
*d++ = *s++;
}
src += srcPR.rowstride;
dest += destPR.rowstride;
}
}
break;
case GIMP_INDEXED:
for (pr = pixel_regions_register (2, &srcPR, &destPR);
pr != NULL;
pr = pixel_regions_process (pr))
@ -182,6 +168,7 @@ gimp_drawable_convert_tiles_rgb (GimpDrawable *drawable,
dest += destPR.rowstride;
}
}
}
break;
default:
@ -193,15 +180,8 @@ void
gimp_drawable_convert_tiles_grayscale (GimpDrawable *drawable,
TileManager *new_tiles)
{
PixelRegion srcPR, destPR;
gint row, col;
gint offset, val;
GimpImageType type;
gboolean has_alpha;
const guchar *src, *s;
guchar *dest, *d;
const guchar *cmap;
gpointer pr;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (new_tiles != NULL);
@ -211,6 +191,31 @@ gimp_drawable_convert_tiles_grayscale (GimpDrawable *drawable,
g_return_if_fail (tile_manager_bpp (new_tiles) == (has_alpha ? 2 : 1));
switch (GIMP_IMAGE_TYPE_BASE_TYPE (type))
{
case GIMP_RGB:
{
GeglBuffer *dest_buffer;
dest_buffer = gimp_tile_manager_create_buffer (new_tiles, TRUE);
gegl_buffer_copy (gimp_drawable_get_read_buffer (drawable), NULL,
dest_buffer, NULL);
g_object_unref (dest_buffer);
}
break;
case GIMP_INDEXED:
{
PixelRegion srcPR, destPR;
gint row, col;
gint offset, val;
const guchar *src, *s;
guchar *dest, *d;
const guchar *cmap;
gpointer pr;
cmap = gimp_drawable_get_colormap (drawable);
pixel_region_init (&srcPR, gimp_drawable_get_tiles (drawable),
@ -224,38 +229,6 @@ gimp_drawable_convert_tiles_grayscale (GimpDrawable *drawable,
gimp_item_get_height (GIMP_ITEM (drawable)),
TRUE);
switch (GIMP_IMAGE_TYPE_BASE_TYPE (type))
{
case GIMP_RGB:
for (pr = pixel_regions_register (2, &srcPR, &destPR);
pr != NULL;
pr = pixel_regions_process (pr))
{
src = srcPR.data;
dest = destPR.data;
for (row = 0; row < srcPR.h; row++)
{
s = src;
d = dest;
for (col = 0; col < srcPR.w; col++)
{
val = GIMP_RGB_LUMINANCE (s[RED],
s[GREEN],
s[BLUE]) + 0.5;
*d++ = (guchar) val;
s += 3;
if (has_alpha)
*d++ = *s++;
}
src += srcPR.rowstride;
dest += destPR.rowstride;
}
}
break;
case GIMP_INDEXED:
for (pr = pixel_regions_register (2, &srcPR, &destPR);
pr != NULL;
pr = pixel_regions_process (pr))
@ -283,6 +256,7 @@ gimp_drawable_convert_tiles_grayscale (GimpDrawable *drawable,
dest += destPR.rowstride;
}
}
}
break;
default: