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plug-ins: port depth-merge to GEGL, stupid 8-bit port only

This commit is contained in:
Michael Natterer 2019-07-17 12:18:50 +02:00
parent d93e928703
commit 7cd78f436d
3 changed files with 185 additions and 343 deletions
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1
plug-ins/common/Makefile.am
View File

@ -475,6 +475,7 @@ depth_merge_LDADD = \
$(libgimpcolor) \
$(libgimpbase) \
$(GTK_LIBS) \
$(GEGL_LIBS) \
$(RT_LIBS) \
$(INTLLIBS) \
$(depth_merge_RC)

525
plug-ins/common/depth-merge.c
View File

@ -84,11 +84,11 @@ typedef struct _DepthMerge
DepthMergeInterface *interface;
DepthMergeParams params;
GimpDrawable *resultDrawable;
GimpDrawable *source1Drawable;
GimpDrawable *source2Drawable;
GimpDrawable *depthMap1Drawable;
GimpDrawable *depthMap2Drawable;
gint32 resultDrawable_id;
gint32 source1Drawable_id;
gint32 source2Drawable_id;
gint32 depthMap1Drawable_id;
gint32 depthMap2Drawable_id;
gint selectionX;
gint selectionY;
gint selectionWidth;
@ -125,22 +125,15 @@ static void dialogValueScaleUpdateCallback (GtkAdjustment *adjustment,
gpointer data);
static void util_fillReducedBuffer (guchar *dest,
const Babl *dest_format,
gint destWidth,
gint destHeight,
gint destBPP,
gboolean destHasAlpha,
GimpDrawable *sourceDrawable,
gint32 sourceDrawable_id,
gint x0,
gint y0,
gint sourceWidth,
gint sourceHeight);
static void util_convertColorspace (guchar *dest,
gint destBPP,
gboolean destHasAlpha,
const guchar *source,
gint sourceBPP,
gboolean sourceHasAlpha,
gint length);
/* ----- plug-in entry points ----- */
@ -207,13 +200,13 @@ run (const gchar *name,
{
static GimpParam values[1];
GimpRunMode runMode;
GimpPDBStatusType status;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
DepthMerge dm;
INIT_I18N ();
gegl_init (NULL, NULL);
runMode = (GimpRunMode) param[0].data.d_int32;
status = GIMP_PDB_SUCCESS;
runMode = param[0].data.d_int32;
*numReturnVals = 1;
*returnVals = values;
@ -268,15 +261,15 @@ run (const gchar *name,
if (status == GIMP_PDB_SUCCESS)
{
gimp_tile_cache_ntiles ((dm.resultDrawable->width +
gimp_tile_width () - 1) / gimp_tile_width ());
if (!DepthMerge_execute (&dm))
status = GIMP_PDB_EXECUTION_ERROR;
{
status = GIMP_PDB_EXECUTION_ERROR;
}
else
{
if (runMode != GIMP_RUN_NONINTERACTIVE)
gimp_displays_flush ();
if (runMode == GIMP_RUN_INTERACTIVE)
gimp_set_data (PLUG_IN_PROC,
&(dm.params), sizeof (DepthMergeParams));
@ -309,34 +302,28 @@ DepthMerge_construct (DepthMerge *dm)
{
dm->interface = NULL;
dm->resultDrawable = gimp_drawable_get (dm->params.result);
if (! gimp_drawable_mask_intersect (dm->resultDrawable->drawable_id,
dm->resultDrawable_id = dm->params.result;
if (! gimp_drawable_mask_intersect (dm->resultDrawable_id,
&(dm->selectionX), &(dm->selectionY),
&(dm->selectionWidth),
&(dm->selectionHeight)))
{
return FALSE;
}
dm->resultHasAlpha = gimp_drawable_has_alpha (dm->resultDrawable->drawable_id);
dm->source1Drawable =
(dm->params.source1 == -1) ? NULL : gimp_drawable_get (dm->params.source1);
dm->resultHasAlpha = gimp_drawable_has_alpha (dm->resultDrawable_id);
dm->source2Drawable =
(dm->params.source2 == -1) ? NULL : gimp_drawable_get (dm->params.source2);
dm->depthMap1Drawable =
(dm->params.depthMap1 == -1) ?
NULL : gimp_drawable_get (dm->params.depthMap1);
dm->depthMap2Drawable =
(dm->params.depthMap2 == -1) ?
NULL : gimp_drawable_get (dm->params.depthMap2);
dm->source1Drawable_id = dm->params.source1;
dm->source2Drawable_id = dm->params.source2;
dm->depthMap1Drawable_id = dm->params.depthMap1;
dm->depthMap2Drawable_id = dm->params.depthMap2;
dm->params.overlap = CLAMP (dm->params.overlap, 0, 2);
dm->params.offset = CLAMP (dm->params.offset, -1, 1);
dm->params.scale1 = CLAMP (dm->params.scale1, -1, 1);
dm->params.scale2 = CLAMP (dm->params.scale2, -1, 1);
return TRUE;
}
@ -351,44 +338,21 @@ DepthMerge_destroy (DepthMerge *dm)
g_free (dm->interface->previewDepthMap2);
g_free (dm->interface);
}
if (dm->resultDrawable != NULL)
gimp_drawable_detach (dm->resultDrawable);
if (dm->source1Drawable != NULL)
gimp_drawable_detach (dm->source1Drawable);
if (dm->source2Drawable != NULL)
gimp_drawable_detach (dm->source2Drawable);
if (dm->depthMap1Drawable != NULL)
gimp_drawable_detach (dm->depthMap1Drawable);
if (dm->depthMap2Drawable != NULL)
gimp_drawable_detach (dm->depthMap2Drawable);
}
static gint32
DepthMerge_execute (DepthMerge *dm)
{
int x, y;
GimpPixelRgn source1Rgn, source2Rgn;
GimpPixelRgn depthMap1Rgn, depthMap2Rgn;
GimpPixelRgn resultRgn;
GeglBuffer *source1_buffer = NULL;
GeglBuffer *source2_buffer = NULL;
GeglBuffer *depthMap1_buffer = NULL;
GeglBuffer *depthMap2_buffer = NULL;
GeglBuffer *result_buffer;
guchar *source1Row, *source2Row;
guchar *depthMap1Row, *depthMap2Row;
guchar *resultRow;
guchar *tempRow;
gboolean source1HasAlpha;
gboolean source2HasAlpha;
gboolean depthMap1HasAlpha;
gboolean depthMap2HasAlpha;
/* initialize */
source1HasAlpha = FALSE;
source2HasAlpha = FALSE;
depthMap1HasAlpha = FALSE;
depthMap2HasAlpha = FALSE;
gimp_progress_init (_("Depth-merging"));
@ -399,123 +363,110 @@ DepthMerge_execute (DepthMerge *dm)
depthMap2Row = g_new (guchar, dm->selectionWidth );
tempRow = g_new (guchar, dm->selectionWidth * 4);
if (dm->source1Drawable != NULL)
if (dm->source1Drawable_id > 0)
{
source1HasAlpha = gimp_drawable_has_alpha (dm->source1Drawable->drawable_id);
gimp_pixel_rgn_init (&source1Rgn, dm->source1Drawable,
dm->selectionX, dm->selectionY,
dm->selectionWidth, dm->selectionHeight,
FALSE, FALSE);
source1_buffer = gimp_drawable_get_buffer (dm->source1Drawable_id);
}
else
for (x = 0; x < dm->selectionWidth; x++)
{
source1Row[4 * x ] = 0;
source1Row[4 * x + 1] = 0;
source1Row[4 * x + 2] = 0;
source1Row[4 * x + 3] = 255;
}
if (dm->source2Drawable != NULL)
{
source2HasAlpha = gimp_drawable_has_alpha (dm->source2Drawable->drawable_id);
gimp_pixel_rgn_init (&source2Rgn, dm->source2Drawable,
dm->selectionX, dm->selectionY,
dm->selectionWidth, dm->selectionHeight,
FALSE, FALSE);
for (x = 0; x < dm->selectionWidth; x++)
{
source1Row[4 * x ] = 0;
source1Row[4 * x + 1] = 0;
source1Row[4 * x + 2] = 0;
source1Row[4 * x + 3] = 255;
}
}
if (dm->source2Drawable_id > 0)
{
source2_buffer = gimp_drawable_get_buffer (dm->source2Drawable_id);
}
else
for (x = 0; x < dm->selectionWidth; x++)
{
source2Row[4 * x ] = 0;
source2Row[4 * x + 1] = 0;
source2Row[4 * x + 2] = 0;
source2Row[4 * x + 3] = 255;
}
if (dm->depthMap1Drawable != NULL)
{
depthMap1HasAlpha = gimp_drawable_has_alpha (dm->depthMap1Drawable->drawable_id);
gimp_pixel_rgn_init (&depthMap1Rgn, dm->depthMap1Drawable,
dm->selectionX, dm->selectionY,
dm->selectionWidth, dm->selectionHeight,
FALSE, FALSE);
for (x = 0; x < dm->selectionWidth; x++)
{
source2Row[4 * x ] = 0;
source2Row[4 * x + 1] = 0;
source2Row[4 * x + 2] = 0;
source2Row[4 * x + 3] = 255;
}
}
if (dm->depthMap1Drawable_id > 0)
{
depthMap1_buffer = gimp_drawable_get_buffer (dm->depthMap1Drawable_id);
}
else
for (x = 0; x < dm->selectionWidth; x++)
{
depthMap1Row[x] = 0;
}
if (dm->depthMap2Drawable != NULL)
{
depthMap2HasAlpha = gimp_drawable_has_alpha (dm->depthMap2Drawable->drawable_id);
gimp_pixel_rgn_init (&depthMap2Rgn, dm->depthMap2Drawable,
dm->selectionX, dm->selectionY,
dm->selectionWidth, dm->selectionHeight,
FALSE, FALSE);
for (x = 0; x < dm->selectionWidth; x++)
{
depthMap1Row[x] = 0;
}
}
if (dm->depthMap2Drawable_id > 0)
{
depthMap2_buffer = gimp_drawable_get_buffer (dm->depthMap2Drawable_id);
}
else
for (x = 0; x < dm->selectionWidth; x++)
{
depthMap2Row[x] = 0;
}
gimp_pixel_rgn_init (&resultRgn, dm->resultDrawable,
dm->selectionX, dm->selectionY,
dm->selectionWidth, dm->selectionHeight,
TRUE, TRUE);
{
for (x = 0; x < dm->selectionWidth; x++)
{
depthMap2Row[x] = 0;
}
}
result_buffer = gimp_drawable_get_shadow_buffer (dm->resultDrawable_id);
for (y = dm->selectionY; y < (dm->selectionY + dm->selectionHeight); y++)
{
if (dm->source1Drawable != NULL)
if (dm->source1Drawable_id > 0)
{
gimp_pixel_rgn_get_row (&source1Rgn, tempRow,
dm->selectionX, y,
dm->selectionWidth);
util_convertColorspace (source1Row, 4, TRUE,
tempRow,
dm->source1Drawable->bpp, source1HasAlpha,
dm->selectionWidth);
gegl_buffer_get (source1_buffer,
GEGL_RECTANGLE (dm->selectionX, y,
dm->selectionWidth, 1), 1.0,
babl_format ("R'G'B'A u8"), source1Row,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
}
if (dm->source2Drawable != NULL)
if (dm->source2Drawable_id > 0)
{
gimp_pixel_rgn_get_row (&source2Rgn, tempRow,
dm->selectionX, y,
dm->selectionWidth);
util_convertColorspace (source2Row, 4, TRUE,
tempRow,
dm->source2Drawable->bpp, source2HasAlpha,
dm->selectionWidth);
gegl_buffer_get (source2_buffer,
GEGL_RECTANGLE (dm->selectionX, y,
dm->selectionWidth, 1), 1.0,
babl_format ("R'G'B'A u8"), source2Row,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
}
if (dm->depthMap1Drawable != NULL)
if (dm->depthMap1Drawable_id > 0)
{
gimp_pixel_rgn_get_row (&depthMap1Rgn, tempRow,
dm->selectionX, y,
dm->selectionWidth);
util_convertColorspace (depthMap1Row, 1, FALSE,
tempRow,
dm->depthMap1Drawable->bpp, depthMap1HasAlpha,
dm->selectionWidth);
gegl_buffer_get (depthMap1_buffer,
GEGL_RECTANGLE (dm->selectionX, y,
dm->selectionWidth, 1), 1.0,
babl_format ("Y' u8"), depthMap1Row,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
}
if (dm->depthMap2Drawable != NULL)
if (dm->depthMap2Drawable_id > 0)
{
gimp_pixel_rgn_get_row (&depthMap2Rgn, tempRow,
dm->selectionX, y,
dm->selectionWidth);
util_convertColorspace (depthMap2Row, 1, FALSE,
tempRow,
dm->depthMap2Drawable->bpp, depthMap2HasAlpha,
dm->selectionWidth);
gegl_buffer_get (depthMap2_buffer,
GEGL_RECTANGLE (dm->selectionX, y,
dm->selectionWidth, 1), 1.0,
babl_format ("Y' u8"), depthMap2Row,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
}
DepthMerge_executeRegion (dm,
source1Row, source2Row, depthMap1Row, depthMap2Row,
resultRow,
dm->selectionWidth);
util_convertColorspace (tempRow, dm->resultDrawable->bpp, dm->resultHasAlpha,
resultRow, 4, TRUE,
dm->selectionWidth);
gimp_pixel_rgn_set_row (&resultRgn, tempRow,
dm->selectionX, y,
dm->selectionWidth);
gegl_buffer_set (result_buffer,
GEGL_RECTANGLE (dm->selectionX, y,
dm->selectionWidth, 1), 0,
babl_format ("R'G'B'A u8"), resultRow,
GEGL_AUTO_ROWSTRIDE);
gimp_progress_update ((double)(y-dm->selectionY) /
(double)(dm->selectionHeight - 1));
@ -529,11 +480,26 @@ DepthMerge_execute (DepthMerge *dm)
g_free (tempRow);
gimp_progress_update (1.0);
gimp_drawable_flush (dm->resultDrawable);
gimp_drawable_merge_shadow (dm->resultDrawable->drawable_id, TRUE);
gimp_drawable_update (dm->resultDrawable->drawable_id,
if (source1_buffer)
g_object_unref (source1_buffer);
if (source2_buffer)
g_object_unref (source2_buffer);
if (depthMap1_buffer)
g_object_unref (depthMap1_buffer);
if (depthMap2_buffer)
g_object_unref (depthMap2_buffer);
g_object_unref (result_buffer);
gimp_drawable_merge_shadow (dm->resultDrawable_id, TRUE);
gimp_drawable_update (dm->resultDrawable_id,
dm->selectionX, dm->selectionY,
dm->selectionWidth, dm->selectionHeight);
return TRUE;
}
@ -815,40 +781,43 @@ DepthMerge_buildPreviewSourceImage (DepthMerge *dm)
g_new (guchar, dm->interface->previewWidth *
dm->interface->previewHeight * 4);
util_fillReducedBuffer (dm->interface->previewSource1,
babl_format ("R'G'B'A u8"),
dm->interface->previewWidth,
dm->interface->previewHeight,
4, TRUE,
dm->source1Drawable,
dm->source1Drawable_id,
dm->selectionX, dm->selectionY,
dm->selectionWidth, dm->selectionHeight);
dm->interface->previewSource2 =
g_new (guchar, dm->interface->previewWidth *
dm->interface->previewHeight * 4);
util_fillReducedBuffer (dm->interface->previewSource2,
babl_format ("R'G'B'A u8"),
dm->interface->previewWidth,
dm->interface->previewHeight,
4, TRUE,
dm->source2Drawable,
dm->source2Drawable_id,
dm->selectionX, dm->selectionY,
dm->selectionWidth, dm->selectionHeight);
dm->interface->previewDepthMap1 =
g_new (guchar, dm->interface->previewWidth *
dm->interface->previewHeight * 1);
util_fillReducedBuffer (dm->interface->previewDepthMap1,
babl_format ("Y' u8"),
dm->interface->previewWidth,
dm->interface->previewHeight,
1, FALSE,
dm->depthMap1Drawable,
dm->depthMap1Drawable_id,
dm->selectionX, dm->selectionY,
dm->selectionWidth, dm->selectionHeight);
dm->interface->previewDepthMap2 =
g_new (guchar, dm->interface->previewWidth *
dm->interface->previewHeight * 1);
util_fillReducedBuffer (dm->interface->previewDepthMap2,
babl_format ("Y' u8"),
dm->interface->previewWidth,
dm->interface->previewHeight,
1, FALSE,
dm->depthMap2Drawable,
dm->depthMap2Drawable_id,
dm->selectionX, dm->selectionY,
dm->selectionWidth, dm->selectionHeight);
}
@ -917,21 +886,16 @@ static void
dialogSource1ChangedCallback (GtkWidget *widget,
DepthMerge *dm)
{
if (dm->source1Drawable)
gimp_drawable_detach (dm->source1Drawable);
gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget),
&dm->params.source1);
dm->source1Drawable = ((dm->params.source1 == -1) ?
NULL :
gimp_drawable_get (dm->params.source1));
dm->source1Drawable_id = dm->params.source1;
util_fillReducedBuffer (dm->interface->previewSource1,
babl_format ("R'G'B'A u8"),
dm->interface->previewWidth,
dm->interface->previewHeight,
4, TRUE,
dm->source1Drawable,
dm->source1Drawable_id,
dm->selectionX, dm->selectionY,
dm->selectionWidth, dm->selectionHeight);
@ -942,21 +906,16 @@ static void
dialogSource2ChangedCallback (GtkWidget *widget,
DepthMerge *dm)
{
if (dm->source2Drawable)
gimp_drawable_detach (dm->source2Drawable);
gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget),
&dm->params.source2);
dm->source2Drawable = ((dm->params.source2 == -1) ?
NULL :
gimp_drawable_get (dm->params.source2));
dm->source2Drawable_id = dm->params.source2;
util_fillReducedBuffer (dm->interface->previewSource2,
babl_format ("R'G'B'A u8"),
dm->interface->previewWidth,
dm->interface->previewHeight,
4, TRUE,
dm->source2Drawable,
dm->source2Drawable_id,
dm->selectionX, dm->selectionY,
dm->selectionWidth, dm->selectionHeight);
@ -967,21 +926,16 @@ static void
dialogDepthMap1ChangedCallback (GtkWidget *widget,
DepthMerge *dm)
{
if (dm->depthMap1Drawable)
gimp_drawable_detach (dm->depthMap1Drawable);
gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget),
&dm->params.depthMap1);
dm->depthMap1Drawable = ((dm->params.depthMap1 == -1) ?
NULL :
gimp_drawable_get (dm->params.depthMap1));
dm->depthMap1Drawable_id = dm->params.depthMap1;
util_fillReducedBuffer (dm->interface->previewDepthMap1,
babl_format ("Y' u8"),
dm->interface->previewWidth,
dm->interface->previewHeight,
1, FALSE,
dm->depthMap1Drawable,
dm->depthMap1Drawable_id,
dm->selectionX, dm->selectionY,
dm->selectionWidth, dm->selectionHeight);
@ -992,21 +946,16 @@ static void
dialogDepthMap2ChangedCallback (GtkWidget *widget,
DepthMerge *dm)
{
if (dm->depthMap2Drawable)
gimp_drawable_detach (dm->depthMap2Drawable);
gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget),
&dm->params.depthMap2);
dm->depthMap2Drawable = ((dm->params.depthMap2 == -1) ?
NULL :
gimp_drawable_get (dm->params.depthMap2));
dm->depthMap2Drawable_id = dm->params.depthMap2;;
util_fillReducedBuffer (dm->interface->previewDepthMap2,
babl_format ("Y' u8"),
dm->interface->previewWidth,
dm->interface->previewHeight,
1, FALSE,
dm->depthMap2Drawable,
dm->depthMap2Drawable_id,
dm->selectionX, dm->selectionY,
dm->selectionWidth, dm->selectionHeight);
@ -1027,177 +976,69 @@ dialogValueScaleUpdateCallback (GtkAdjustment *adjustment,
/* ----- Utility routines ----- */
static void
util_fillReducedBuffer (guchar *dest,
gint destWidth,
gint destHeight,
gint destBPP,
gboolean destHasAlpha,
GimpDrawable *sourceDrawable,
gint x0,
gint y0,
gint sourceWidth,
gint sourceHeight)
util_fillReducedBuffer (guchar *dest,
const Babl *dest_format,
gint destWidth,
gint destHeight,
gint32 sourceDrawable_id,
gint x0,
gint y0,
gint sourceWidth,
gint sourceHeight)
{
GimpPixelRgn rgn;
guchar *sourceBuffer, *reducedRowBuffer;
guchar *sourceBufferPos, *reducedRowBufferPos;
guchar *sourceBufferRow;
gint x, y, i, yPrime;
gboolean sourceHasAlpha;
gint sourceBpp;
gint *sourceRowOffsetLookup;
GeglBuffer *buffer;
guchar *sourceBuffer, *reducedRowBuffer;
guchar *sourceBufferPos, *reducedRowBufferPos;
guchar *sourceBufferRow;
gint x, y, i, yPrime;
gint destBPP;
gint *sourceRowOffsetLookup;
if ((sourceDrawable == NULL) || (sourceWidth == 0) || (sourceHeight == 0))
destBPP = babl_format_get_bytes_per_pixel (dest_format);
if ((sourceDrawable_id < 1) || (sourceWidth == 0) || (sourceHeight == 0))
{
for (x = 0; x < destWidth * destHeight * destBPP; x++)
dest[x] = 0;
return;
}
sourceBpp = sourceDrawable->bpp;
sourceBuffer = g_new (guchar, sourceWidth * sourceHeight * sourceBpp);
reducedRowBuffer = g_new (guchar, destWidth * sourceBpp);
sourceBuffer = g_new (guchar, sourceWidth * sourceHeight * destBPP);
reducedRowBuffer = g_new (guchar, destWidth * destBPP);
sourceRowOffsetLookup = g_new (int, destWidth);
gimp_pixel_rgn_init (&rgn, sourceDrawable,
x0, y0, sourceWidth, sourceHeight,
FALSE, FALSE);
sourceHasAlpha = gimp_drawable_has_alpha (sourceDrawable->drawable_id);
buffer = gimp_drawable_get_buffer (sourceDrawable_id);
for (x = 0; x < destWidth; x++)
sourceRowOffsetLookup[x] = (x * (sourceWidth - 1) / (destWidth - 1)) * sourceBpp;
sourceRowOffsetLookup[x] = (x * (sourceWidth - 1) / (destWidth - 1)) * destBPP;
gimp_pixel_rgn_get_rect (&rgn, sourceBuffer,
x0, y0, sourceWidth, sourceHeight);
gegl_buffer_get (buffer,
GEGL_RECTANGLE (x0, y0, sourceWidth, sourceHeight), 1.0,
dest_format, sourceBuffer,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
for (y = 0; y < destHeight; y++)
{
yPrime = y * (sourceHeight - 1) / (destHeight - 1);
sourceBufferRow = &(sourceBuffer[yPrime * sourceWidth * sourceBpp]);
sourceBufferRow = &(sourceBuffer[yPrime * sourceWidth * destBPP]);
reducedRowBufferPos = reducedRowBuffer;
for (x = 0; x < destWidth; x++)
{
sourceBufferPos = sourceBufferRow + sourceRowOffsetLookup[x];
for (i = 0; i < sourceBpp; i++)
for (i = 0; i < destBPP; i++)
reducedRowBufferPos[i] = sourceBufferPos[i];
reducedRowBufferPos += sourceBpp;
reducedRowBufferPos += destBPP;
}
util_convertColorspace(&(dest[y * destWidth * destBPP]), destBPP, destHasAlpha,
reducedRowBuffer, sourceDrawable->bpp, sourceHasAlpha,
destWidth);
memcpy (&(dest[y * destWidth * destBPP]), reducedRowBuffer,
destWidth * destBPP);
}
g_object_unref (buffer);
g_free (sourceBuffer);
g_free (reducedRowBuffer);
g_free (sourceRowOffsetLookup);
}
/* Utterly pathetic kludge to convert between color spaces;
likes gray and rgb best, of course. Others will be creatively mutilated,
and even rgb->gray is pretty bad */
static void
util_convertColorspace (guchar *dest,
gint destBPP,
gboolean destHasAlpha,
const guchar *source,
gint sourceBPP,
gboolean sourceHasAlpha,
gint length)
{
gint i, j;
gint sourcePos, destPos;
gint accum;
gint sourceColorBPP = sourceHasAlpha ? (sourceBPP - 1) : sourceBPP;
gint destColorBPP = destHasAlpha ? (destBPP - 1) : destBPP;
if ((sourceColorBPP == destColorBPP) &&
(sourceBPP == destBPP ))
{
j = length * sourceBPP;
for (i = 0; i < j; i++)
dest[i] = source[i];
return;
}
if (sourceColorBPP == destColorBPP)
{
for (i = destPos = sourcePos = 0;
i < length;
i++, destPos += destBPP, sourcePos += sourceBPP)
{
for (j = 0; j < destColorBPP; j++)
dest[destPos + j] = source[sourcePos + j];
}
}
else if (sourceColorBPP == 1)
{
/* Duplicate single "gray" source byte across all dest bytes */
for (i = destPos = sourcePos = 0;
i < length;
i++, destPos += destBPP, sourcePos += sourceBPP)
{
for (j = 0; j < destColorBPP; j++)
dest[destPos + j] = source[sourcePos];
}
}
else if (destColorBPP == 1)
{
/* Average all source bytes into single "gray" dest byte */
for (i = destPos = sourcePos = 0;
i < length;
i++, destPos += destBPP, sourcePos += sourceBPP)
{
accum = 0;
for (j = 0; j < sourceColorBPP; j++)
accum += source[sourcePos + j];
dest[destPos] = accum/sourceColorBPP;
}
}
else if (destColorBPP < sourceColorBPP)
{
/* Copy as many corresponding bytes from source to dest as will fit */
for (i = destPos = sourcePos = 0;
i < length;
i++, destPos += destBPP, sourcePos += sourceBPP)
{
for (j = 0; j < destColorBPP; j++)
dest[destPos + j] = source[sourcePos + j];
}
}
else /* destColorBPP > sourceColorBPP */
{
/* Fill extra dest bytes with zero */
for (i = destPos = sourcePos = 0;
i < length;
i++, destPos += destBPP, sourcePos += sourceBPP)
{
for (j = 0; j < sourceColorBPP; j++)
dest[destPos + j] = source[destPos + j];
for ( ; j < destColorBPP; j++)
dest[destPos + j] = 0;
}
}
if (destHasAlpha)
{
if (sourceHasAlpha)
{
for (i = 0, destPos = destColorBPP, sourcePos = sourceColorBPP;
i < length;
i++, destPos += destBPP, sourcePos += sourceBPP)
{
dest[destPos] = source[sourcePos];
}
}
else
{
for (i = 0, destPos = destColorBPP;
i < length;
i++, destPos += destBPP)
{
dest[destPos] = 255;
}
}
}
}

2
plug-ins/common/plugin-defs.pl
View File

@ -13,7 +13,7 @@
'crop-zealous' => { gegl => 1 },
'curve-bend' => { ui => 1, gegl => 1 },
'decompose' => { ui => 1, gegl => 1 },
'depth-merge' => { ui => 1 },
'depth-merge' => { ui => 1, gegl => 1 },
'despeckle' => { ui => 1, gegl => 1 },
'destripe' => { ui => 1, gegl => 1 },
'emboss' => { ui => 1 },