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gimp/plug-ins/common/compose.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* Compose plug-in (C) 1997,1999 Peter Kirchgessner
* e-mail: peter@kirchgessner.net, WWW: http://www.kirchgessner.net
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
* This plug-in composes RGB-images from several types of channels
*/
/* Lab colorspace support originally written by Alexey Dyachenko,
* merged into the officical plug-in by Sven Neumann.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <gtk/gtk.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include <libgimpmath/gimpmath.h>
#include "libgimp/stdplugins-intl.h"
/* Declare local functions
*/
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static gint32 compose (const gchar *compose_type,
gint32 *compose_ID,
gboolean compose_by_drawable);
static gint32 create_new_image (const gchar *filename,
guint width,
guint height,
GimpImageType gdtype,
gint32 *layer_ID,
GimpDrawable **drawable,
GimpPixelRgn *pixel_rgn);
static void compose_rgb (guchar **src,
gint *incr, gint numpix, guchar *dst);
static void compose_rgba (guchar **src,
gint *incr, gint numpix, guchar *dst);
static void compose_hsv (guchar **src,
gint *incr, gint numpix, guchar *dst);
static void compose_cmy (guchar **src,
gint *incr, gint numpix, guchar *dst);
static void compose_cmyk (guchar **src,
gint *incr, gint numpix, guchar *dst);
static void compose_lab (guchar **src,
gint *incr, gint numpix, guchar *dst);
static void compose_ycbcr470 (guchar **src,
gint *incr, gint numpix, guchar *dst);
static void compose_ycbcr709 (guchar **src,
gint *incr, gint numpix, guchar *dst);
static void compose_ycbcr470f (guchar **src,
gint *incr, gint numpix, guchar *dst);
static void compose_ycbcr709f (guchar **src,
gint *incr, gint numpix, guchar *dst);
static gboolean compose_dialog (const gchar *compose_type,
gint32 drawable_ID);
static gboolean check_gray (gint32 image_id,
gint32 drawable_id,
gpointer data);
static void compose_type_toggle_update (GtkWidget *widget,
gpointer data);
/* LAB colorspace constants */
const double Xn = 0.951;
const double Yn = 1.0;
const double Zn = 1.089;
/* Maximum number of images to compose */
#define MAX_COMPOSE_IMAGES 4
/* Description of a composition */
typedef struct
{
const gchar *compose_type; /* Type of composition ("RGB", "RGBA",...) */
gint num_images; /* Number of input images needed */
/* Channel names and stock ids for dialog */
const gchar *channel_name[MAX_COMPOSE_IMAGES];
const gchar *channel_icon[MAX_COMPOSE_IMAGES];
const gchar *filename; /* Name of new image */
/* Compose functon */
void (* compose_fun) (guchar **src,
gint *incr_src,
gint numpix,
guchar *dst);
} COMPOSE_DSC;
/* Array of available compositions. */
static COMPOSE_DSC compose_dsc[] =
{
{ N_("RGB"), 3,
{ N_("Red:"),
N_("Green:"),
N_("Blue:"),
NULL },
{ GIMP_STOCK_CHANNEL_RED,
GIMP_STOCK_CHANNEL_GREEN,
GIMP_STOCK_CHANNEL_BLUE,
NULL },
"rgb-compose", compose_rgb },
{ N_("RGBA"), 4,
{ N_("Red:"),
N_("Green:"),
N_("Blue:"),
N_("Alpha:") },
{ GIMP_STOCK_CHANNEL_RED,
GIMP_STOCK_CHANNEL_GREEN,
GIMP_STOCK_CHANNEL_BLUE,
GIMP_STOCK_CHANNEL_ALPHA },
"rgba-compose", compose_rgba },
{ N_("HSV"), 3,
{ N_("Hue:"),
N_("Saturation:"),
N_("Value:"),
NULL },
{ NULL, NULL, NULL, NULL },
"hsv-compose", compose_hsv },
{ N_("CMY"), 3,
{ N_("Cyan:"),
N_("Magenta:"),
N_("Yellow:"),
NULL },
{ NULL, NULL, NULL, NULL },
"cmy-compose", compose_cmy },
{ N_("CMYK"), 4,
{ N_("Cyan:"),
N_("Magenta:"),
N_("Yellow:"),
N_("Black:") },
{ NULL, NULL, NULL, NULL },
"cmyk-compose", compose_cmyk },
{ N_("LAB"), 3,
{ "L",
"A",
"B",
NULL },
{ NULL, NULL, NULL, NULL },
"lab-compose", compose_lab },
{ "YCbCr_ITU_R470", 3,
{ N_("Luma_y470:"),
N_("Blueness_cb470:"),
N_("Redness_cr470:"),
NULL },
{ NULL, NULL, NULL, NULL },
"ycbcr470-compose", compose_ycbcr470 },
{ "YCbCr_ITU_R709", 3,
{ N_("Luma_y709:"),
N_("Blueness_cb709:"),
N_("Redness_cr709:"),
NULL },
{ NULL, NULL, NULL, NULL },
"ycbcr709-compose", compose_ycbcr709 },
{ "YCbCr_ITU_R470_256", 3,
{ N_("Luma_y470f:"),
N_("Blueness_cb470f:"),
N_("Redness_cr470f:"),
NULL },
{ NULL, NULL, NULL, NULL },
"ycbcr470F-compose", compose_ycbcr470f },
{ "YCbCr_ITU_R709_256", 3,
{ N_("Luma_y709f:"),
N_("Blueness_cb709f:"),
N_("Redness_cr709f:"),
NULL },
{ NULL, NULL, NULL, NULL },
"ycbcr709F-compose", compose_ycbcr709f },
};
typedef struct
{
gint32 compose_ID[MAX_COMPOSE_IMAGES]; /* Image IDs of input images */
gchar compose_type[32]; /* type of composition */
} ComposeVals;
/* Dialog structure */
typedef struct
{
gint width, height; /* Size of selected image */
GtkWidget *channel_label[MAX_COMPOSE_IMAGES]; /* The labels to change */
GtkWidget *channel_icon[MAX_COMPOSE_IMAGES]; /* The icons */
GtkWidget *channel_menu[MAX_COMPOSE_IMAGES]; /* The menues */
gint32 select_ID[MAX_COMPOSE_IMAGES]; /* Image Ids selected by menu */
gint compose_flag[G_N_ELEMENTS (compose_dsc)]; /* toggle data of compose type */
} ComposeInterface;
GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
static ComposeVals composevals =
{
{ 0 }, /* Image IDs of images to compose */
"rgb" /* Type of composition */
};
static ComposeInterface composeint =
{
0, 0, /* width, height */
{ NULL }, /* Label Widgets */
{ NULL }, /* Icon Widgets */
{ NULL }, /* Menu Widgets */
{ 0 }, /* Image IDs from menues */
{ 0 } /* Compose type toggle flags */
};
static GimpRunMode run_mode;
MAIN ()
static void
query (void)
{
static GimpParamDef args[] =
{
{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
{ GIMP_PDB_IMAGE, "image1", "First input image" },
{ GIMP_PDB_DRAWABLE, "drawable", "Input drawable (not used)" },
{ GIMP_PDB_IMAGE, "image2", "Second input image" },
{ GIMP_PDB_IMAGE, "image3", "Third input image" },
{ GIMP_PDB_IMAGE, "image4", "Fourth input image" },
{ GIMP_PDB_STRING, "compose_type", "What to compose: RGB, RGBA, HSV, CMY, CMYK" }
};
static GimpParamDef return_vals[] =
{
{ GIMP_PDB_IMAGE, "new_image", "Output image" }
};
static GimpParamDef drw_args[] =
{
{ GIMP_PDB_INT32, "run_mode", "Interactive, non-interactive" },
{ GIMP_PDB_IMAGE, "image1", "First input image (not used)" },
{ GIMP_PDB_DRAWABLE, "drawable1", "First input drawable" },
{ GIMP_PDB_DRAWABLE, "drawable2", "Second input drawable" },
{ GIMP_PDB_DRAWABLE, "drawable3", "Third input drawable" },
{ GIMP_PDB_DRAWABLE, "drawable4", "Fourth input drawable" },
{ GIMP_PDB_STRING, "compose_type", "What to compose: RGB, RGBA, HSV, CMY, CMYK" }
};
static GimpParamDef drw_return_vals[] =
{
{ GIMP_PDB_IMAGE, "new_image", "Output image" }
};
gimp_install_procedure ("plug_in_compose",
"Compose an image from multiple gray images",
"This function creates a new image from "
"multiple gray images",
"Peter Kirchgessner",
"Peter Kirchgessner (peter@kirchgessner.net)",
"1997",
N_("C_ompose..."),
"GRAY*",
GIMP_PLUGIN,
G_N_ELEMENTS (args),
G_N_ELEMENTS (return_vals),
args, return_vals);
gimp_plugin_menu_register ("plug_in_compose", "<Image>/Filters/Colors");
gimp_plugin_menu_register ("plug_in_compose", "<Image>/Image/Mode");
gimp_install_procedure ("plug_in_drawable_compose",
"Compose an image from multiple drawables of gray images",
"This function creates a new image from "
"multiple drawables of gray images",
"Peter Kirchgessner",
"Peter Kirchgessner (peter@kirchgessner.net)",
"1998",
NULL, /* It is not available in interactive mode */
"GRAY*",
GIMP_PLUGIN,
G_N_ELEMENTS (drw_args),
G_N_ELEMENTS (drw_return_vals),
drw_args, drw_return_vals);
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[2];
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
gint32 image_ID, drawable_ID;
gint compose_by_drawable;
INIT_I18N ();
run_mode = param[0].data.d_int32;
compose_by_drawable = (strcmp (name, "plug_in_drawable_compose") == 0);
*nreturn_vals = 2;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
values[1].type = GIMP_PDB_IMAGE;
values[1].data.d_int32 = -1;
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
/* Possibly retrieve data */
gimp_get_data (name , &composevals);
/* The dialog is now drawable based. Get a drawable-ID of the image */
if (strcmp (name, "plug_in_compose") == 0)
{
gint32 *layer_list;
gint nlayers;
layer_list = gimp_image_get_layers (param[1].data.d_int32, &nlayers);
if ((layer_list == NULL) || (nlayers <= 0))
{
g_message (_("Could not get layers for image %d"),
(gint) param[1].data.d_int32);
return;
}
drawable_ID = layer_list[0];
g_free (layer_list);
}
else
{
drawable_ID = param[2].data.d_int32;
}
compose_by_drawable = 1;
/* First acquire information with a dialog */
if (! compose_dialog (composevals.compose_type, drawable_ID))
return;
break;
case GIMP_RUN_NONINTERACTIVE:
/* Make sure all the arguments are there! */
if (nparams != 7)
{
status = GIMP_PDB_CALLING_ERROR;
}
else
{
composevals.compose_ID[0] = (compose_by_drawable ?
param[2].data.d_int32 :
param[1].data.d_int32);
composevals.compose_ID[1] = param[3].data.d_int32;
composevals.compose_ID[2] = param[4].data.d_int32;
composevals.compose_ID[3] = param[5].data.d_int32;
strncpy (composevals.compose_type, param[6].data.d_string,
sizeof (composevals.compose_type));
composevals.compose_type[sizeof (composevals.compose_type)-1] = '\0';
}
break;
case GIMP_RUN_WITH_LAST_VALS:
/* Possibly retrieve data */
gimp_get_data (name, &composevals);
break;
default:
break;
}
if (status == GIMP_PDB_SUCCESS)
{
gimp_progress_init (_("Composing..."));
image_ID = compose (composevals.compose_type,
composevals.compose_ID,
compose_by_drawable);
if (image_ID < 0)
{
status = GIMP_PDB_EXECUTION_ERROR;
}
else
{
values[1].data.d_int32 = image_ID;
gimp_image_undo_enable (image_ID);
gimp_image_clean_all (image_ID);
if (run_mode != GIMP_RUN_NONINTERACTIVE)
gimp_display_new (image_ID);
}
/* Store data */
if (run_mode == GIMP_RUN_INTERACTIVE)
gimp_set_data (name, &composevals, sizeof (ComposeVals));
}
values[0].data.d_status = status;
}
/* Compose an image from several gray-images */
static gint32
compose (const gchar *compose_type,
gint32 *compose_ID,
gboolean compose_by_drawable)
{
gint width, height, tile_height, scan_lines;
gint num_images, compose_idx, incr_src[MAX_COMPOSE_IMAGES];
gint i, j;
gint num_layers;
gint32 layer_ID_dst, image_ID_dst;
guchar *src[MAX_COMPOSE_IMAGES];
guchar *dst;
GimpImageType gdtype_dst;
GimpDrawable *drawable_src[MAX_COMPOSE_IMAGES], *drawable_dst;
GimpPixelRgn pixel_rgn_src[MAX_COMPOSE_IMAGES], pixel_rgn_dst;
/* Search type of composing */
compose_idx = -1;
for (j = 0; j < G_N_ELEMENTS (compose_dsc); j++)
{
if (g_ascii_strcasecmp (compose_type, compose_dsc[j].compose_type) == 0)
compose_idx = j;
}
if (compose_idx < 0)
return (-1);
num_images = compose_dsc[compose_idx].num_images;
tile_height = gimp_tile_height ();
/* Check image sizes */
if (compose_by_drawable)
{
width = gimp_drawable_width (compose_ID[0]);
height = gimp_drawable_height (compose_ID[0]);
for (j = 1; j < num_images; j++)
{
if ((width != (gint)gimp_drawable_width (compose_ID[j])) ||
(height != (gint)gimp_drawable_height (compose_ID[j])))
{
g_message (_("Drawables have different size"));
return -1;
}
}
for (j = 0; j < num_images; j++)
drawable_src[j] = gimp_drawable_get (compose_ID[j]);
}
else /* Compose by image ID */
{
width = gimp_image_width (compose_ID[0]);
height = gimp_image_height (compose_ID[0]);
for (j = 1; j < num_images; j++)
{
if ((width != (gint)gimp_image_width (compose_ID[j])) ||
(height != (gint)gimp_image_height (compose_ID[j])))
{
g_message (_("Images have different size"));
return -1;
}
}
/* Get first layer/drawable for all input images */
for (j = 0; j < num_images; j++)
{
gint32 *g32;
/* Get first layer of image */
g32 = gimp_image_get_layers (compose_ID[j], &num_layers);
if ((g32 == NULL) || (num_layers <= 0))
{
g_message (_("Error in getting layer IDs"));
return -1;
}
/* Get drawable for layer */
drawable_src[j] = gimp_drawable_get (g32[0]);
g_free (g32);
}
}
/* Get pixel region for all input drawables */
for (j = 0; j < num_images; j++)
{
/* Check bytes per pixel */
incr_src[j] = drawable_src[j]->bpp;
if ((incr_src[j] != 1) && (incr_src[j] != 2))
{
g_message (_("Image is not a gray image (bpp=%d)"),
incr_src[j]);
return -1;
}
/* Get pixel region */
gimp_pixel_rgn_init (&(pixel_rgn_src[j]), drawable_src[j], 0, 0,
width, height, FALSE, FALSE);
/* Get memory for retrieving information */
src[j] = g_new (guchar, tile_height * width * drawable_src[j]->bpp);
}
/* Create new image */
gdtype_dst = (compose_dsc[compose_idx].compose_fun == compose_rgba)
? GIMP_RGBA_IMAGE : GIMP_RGB_IMAGE;
image_ID_dst = create_new_image (compose_dsc[compose_idx].filename,
width, height, gdtype_dst,
&layer_ID_dst, &drawable_dst,
&pixel_rgn_dst);
dst = g_new (guchar, tile_height * width * drawable_dst->bpp);
/* Do the composition */
i = 0;
while (i < height)
{
scan_lines = (i+tile_height-1 < height) ? tile_height : (height-i);
/* Get source pixel regions */
for (j = 0; j < num_images; j++)
gimp_pixel_rgn_get_rect (&(pixel_rgn_src[j]), src[j], 0, i,
width, scan_lines);
/* Do the composition */
compose_dsc[compose_idx].compose_fun (src,
incr_src,
width * tile_height,
dst);
/* Set destination pixel region */
gimp_pixel_rgn_set_rect (&pixel_rgn_dst, dst, 0, i, width, scan_lines);
i += scan_lines;
gimp_progress_update ((gdouble) i / (gdouble) height);
}
for (j = 0; j < num_images; j++)
{
g_free (src[j]);
gimp_drawable_detach (drawable_src[j]);
}
g_free (dst);
gimp_drawable_detach (drawable_dst);
gimp_drawable_update (layer_ID_dst, 0, 0,
gimp_drawable_width (layer_ID_dst),
gimp_drawable_height (layer_ID_dst));
return image_ID_dst;
}
/* Create an image. Sets layer_ID, drawable and rgn. Returns image_ID */
static gint32
create_new_image (const gchar *filename,
guint width,
guint height,
GimpImageType gdtype,
gint32 *layer_ID,
GimpDrawable **drawable,
GimpPixelRgn *pixel_rgn)
{
gint32 image_ID;
GimpImageBaseType gitype;
if ((gdtype == GIMP_GRAY_IMAGE) || (gdtype == GIMP_GRAYA_IMAGE))
gitype = GIMP_GRAY;
else if ((gdtype == GIMP_INDEXED_IMAGE) || (gdtype == GIMP_INDEXEDA_IMAGE))
gitype = GIMP_INDEXED;
else
gitype = GIMP_RGB;
image_ID = gimp_image_new (width, height, gitype);
gimp_image_set_filename (image_ID, (gchar *) filename);
gimp_image_undo_disable (image_ID);
*layer_ID = gimp_layer_new (image_ID, _("Background"), width, height,
gdtype, 100, GIMP_NORMAL_MODE);
gimp_image_add_layer (image_ID, *layer_ID, 0);
*drawable = gimp_drawable_get (*layer_ID);
gimp_pixel_rgn_init (pixel_rgn, *drawable, 0, 0, (*drawable)->width,
(*drawable)->height, TRUE, FALSE);
return image_ID;
}
static void
compose_rgb (guchar **src,
gint *incr_src,
gint numpix,
guchar *dst)
{
register const guchar *red_src = src[0];
register const guchar *green_src = src[1];
register const guchar *blue_src = src[2];
register guchar *rgb_dst = dst;
register gint count = numpix;
gint red_incr = incr_src[0];
gint green_incr = incr_src[1];
gint blue_incr = incr_src[2];
if ((red_incr == 1) && (green_incr == 1) && (blue_incr == 1))
{
while (count-- > 0)
{
*(rgb_dst++) = *(red_src++);
*(rgb_dst++) = *(green_src++);
*(rgb_dst++) = *(blue_src++);
}
}
else
{
while (count-- > 0)
{
*(rgb_dst++) = *red_src; red_src += red_incr;
*(rgb_dst++) = *green_src; green_src += green_incr;
*(rgb_dst++) = *blue_src; blue_src += blue_incr;
}
}
}
static void
compose_rgba (guchar **src,
gint *incr_src,
gint numpix,
guchar *dst)
{
register const guchar *red_src = src[0];
register const guchar *green_src = src[1];
register const guchar *blue_src = src[2];
register const guchar *alpha_src = src[3];
register guchar *rgb_dst = dst;
register gint count = numpix;
gint red_incr = incr_src[0];
gint green_incr = incr_src[1];
gint blue_incr = incr_src[2];
gint alpha_incr = incr_src[3];
if ((red_incr == 1) && (green_incr == 1) && (blue_incr == 1) &&
(alpha_incr == 1))
{
while (count-- > 0)
{
*(rgb_dst++) = *(red_src++);
*(rgb_dst++) = *(green_src++);
*(rgb_dst++) = *(blue_src++);
*(rgb_dst++) = *(alpha_src++);
}
}
else
{
while (count-- > 0)
{
*(rgb_dst++) = *red_src; red_src += red_incr;
*(rgb_dst++) = *green_src; green_src += green_incr;
*(rgb_dst++) = *blue_src; blue_src += blue_incr;
*(rgb_dst++) = *alpha_src; alpha_src += alpha_incr;
}
}
}
static void
compose_hsv (guchar **src,
gint *incr_src,
gint numpix,
guchar *dst)
{
register const guchar *hue_src = src[0];
register const guchar *sat_src = src[1];
register const guchar *val_src = src[2];
register guchar *rgb_dst = dst;
register gint count = numpix;
gint hue_incr = incr_src[0];
gint sat_incr = incr_src[1];
gint val_incr = incr_src[2];
while (count-- > 0)
{
gimp_hsv_to_rgb4 (rgb_dst, (gdouble) *hue_src / 255.0,
(gdouble) *sat_src / 255.0,
(gdouble) *val_src / 255.0);
rgb_dst += 3;
hue_src += hue_incr;
sat_src += sat_incr;
val_src += val_incr;
}
}
static void
compose_cmy (guchar **src,
gint *incr_src,
gint numpix,
guchar *dst)
{
register const guchar *cyan_src = src[0];
register const guchar *magenta_src = src[1];
register const guchar *yellow_src = src[2];
register guchar *rgb_dst = dst;
register gint count = numpix;
gint cyan_incr = incr_src[0];
gint magenta_incr = incr_src[1];
gint yellow_incr = incr_src[2];
if ((cyan_incr == 1) && (magenta_incr == 1) && (yellow_incr == 1))
{
while (count-- > 0)
{
*(rgb_dst++) = 255 - *(cyan_src++);
*(rgb_dst++) = 255 - *(magenta_src++);
*(rgb_dst++) = 255 - *(yellow_src++);
}
}
else
{
while (count-- > 0)
{
*(rgb_dst++) = 255 - *cyan_src;
*(rgb_dst++) = 255 - *magenta_src;
*(rgb_dst++) = 255 - *yellow_src;
cyan_src += cyan_incr;
magenta_src += magenta_incr;
yellow_src += yellow_incr;
}
}
}
static void
compose_cmyk (guchar **src,
gint *incr_src,
gint numpix,
guchar *dst)
{
register const guchar *cyan_src = src[0];
register const guchar *magenta_src = src[1];
register const guchar *yellow_src = src[2];
register const guchar *black_src = src[3];
register guchar *rgb_dst = dst;
register gint count = numpix;
gint cyan, magenta, yellow, black;
gint cyan_incr = incr_src[0];
gint magenta_incr = incr_src[1];
gint yellow_incr = incr_src[2];
gint black_incr = incr_src[3];
while (count-- > 0)
{
black = (gint)*black_src;
if (black)
{
cyan = (gint) *cyan_src;
magenta = (gint) *magenta_src;
yellow = (gint) *yellow_src;
cyan += black; if (cyan > 255) cyan = 255;
magenta += black; if (magenta > 255) magenta = 255;
yellow += black; if (yellow > 255) yellow = 255;
*(rgb_dst++) = 255 - cyan;
*(rgb_dst++) = 255 - magenta;
*(rgb_dst++) = 255 - yellow;
}
else
{
*(rgb_dst++) = 255 - *cyan_src;
*(rgb_dst++) = 255 - *magenta_src;
*(rgb_dst++) = 255 - *yellow_src;
}
cyan_src += cyan_incr;
magenta_src += magenta_incr;
yellow_src += yellow_incr;
black_src += black_incr;
}
}
static void
compose_lab (guchar **src,
gint *incr_src,
gint numpix,
guchar *dst)
{
register guchar *l_src = src[0];
register guchar *a_src = src[1];
register guchar *b_src = src[2];
register guchar *rgb_dst = dst;
register gint count = numpix;
gint l_incr = incr_src[0], a_incr = incr_src[1], b_incr = incr_src[2];
gdouble red, green, blue;
gdouble x, y, z;
gdouble l, a, b;
gdouble p, yyn;
gdouble ha, hb, sqyyn;
while (count-- > 0)
{
l = *l_src / 2.550;
a = ( *a_src - 128.0 ) / 1.27;
b = ( *b_src - 128.0 ) / 1.27;
p = (l + 16.) / 116.;
yyn = p*p*p;
if (yyn > 0.008856)
{
y = Yn * yyn;
ha = (p + a/500.);
x = Xn * ha*ha*ha;
hb = (p - b/200.);
z = Zn * hb*hb*hb;
}
else
{
y = Yn * l/903.3;
sqyyn = pow(l/903.3,1./3.);
ha = a/500./7.787 + sqyyn;
x = Xn * ha*ha*ha;
hb = sqyyn - b/200./7.787;
z = Zn * hb*hb*hb;
};
red = 3.063 * x - 1.393 * y - 0.476 * z;
green = -0.969 * x + 1.876 * y + 0.042 * z;
blue = 0.068 * x - 0.229 * y + 1.069 * z;
red = ( red > 0 ) ? red : 0;
green = ( green > 0 ) ? green : 0;
blue = ( blue > 0 ) ? blue : 0;
red = ( red < 1.0 ) ? red : 1.0;
green = ( green < 1.0 ) ? green : 1.0;
blue = ( blue < 1.0 ) ? blue : 1.0;
rgb_dst[0] = (guchar) ( red * 255.999 );
rgb_dst[1] = (guchar) ( green * 255.999 );
rgb_dst[2] = (guchar) ( blue * 255.999 );
rgb_dst += 3;
l_src += l_incr;
a_src += a_incr;
b_src += b_incr;
}
}
/* these are here so the code is more readable and we can use
the standart values instead of some scaled and rounded fixpoint values */
#define FIX(a) ((int)((a)*256.0*256.0 + 0.5))
#define FIXY(a) ((int)((a)*256.0*256.0*255.0/219.0 + 0.5))
#define FIXC(a) ((int)((a)*256.0*256.0*255.0/224.0 + 0.5))
static void
compose_ycbcr470 (guchar **src,
gint *incr_src,
gint numpix,
guchar *dst)
{
register const guchar *y_src = src[0];
register const guchar *cb_src = src[1];
register const guchar *cr_src = src[2];
register guchar *rgb_dst = dst;
register gint count = numpix;
gint y_incr = incr_src[0];
gint cb_incr = incr_src[1];
gint cr_incr = incr_src[2];
while (count-- > 0)
{
int r,g,b,y,cb,cr;
y = *y_src - 16;
cb= *cb_src - 128;
cr= *cr_src - 128;
y_src += y_incr;
cb_src += cb_incr;
cr_src += cr_incr;
r = (FIXY(1.0)*y + FIXC(1.4022)*cr + FIX(0.5))>>16;
g = (FIXY(1.0)*y - FIXC(0.3456)*cb - FIXC(0.7145)*cr + FIX(0.5))>>16;
b = (FIXY(1.0)*y + FIXC(1.7710)*cb + FIX(0.5))>>16;
if(((unsigned)r) > 255) r = ((r>>10)&255)^255;
if(((unsigned)g) > 255) g = ((g>>10)&255)^255;
if(((unsigned)b) > 255) b = ((b>>10)&255)^255;
*(rgb_dst++) = r;
*(rgb_dst++) = g;
*(rgb_dst++) = b;
}
}
static void
compose_ycbcr709 (guchar **src,
gint *incr_src,
gint numpix,
guchar *dst)
{
register const guchar *y_src = src[0];
register const guchar *cb_src = src[1];
register const guchar *cr_src = src[2];
register guchar *rgb_dst = dst;
register gint count = numpix;
gint y_incr = incr_src[0];
gint cb_incr = incr_src[1];
gint cr_incr = incr_src[2];
while (count-- > 0)
{
int r,g,b,y,cb,cr;
y = *y_src - 16;
cb= *cb_src - 128;
cr= *cr_src - 128;
y_src += y_incr;
cb_src += cb_incr;
cr_src += cr_incr;
r = (FIXY(1.0)*y + FIXC(1.5748)*cr + FIX(0.5))>>16;
g = (FIXY(1.0)*y - FIXC(0.1873)*cb - FIXC(0.4681)*cr + FIX(0.5))>>16;
b = (FIXY(1.0)*y + FIXC(1.8556)*cb + FIX(0.5))>>16;
if(((unsigned)r) > 255) r = ((r>>10)&255)^255;
if(((unsigned)g) > 255) g = ((g>>10)&255)^255;
if(((unsigned)b) > 255) b = ((b>>10)&255)^255;
*(rgb_dst++) = r;
*(rgb_dst++) = g;
*(rgb_dst++) = b;
}
}
static void
compose_ycbcr470f (guchar **src,
gint *incr_src,
gint numpix,
guchar *dst)
{
register const guchar *y_src = src[0];
register const guchar *cb_src = src[1];
register const guchar *cr_src = src[2];
register guchar *rgb_dst = dst;
register gint count = numpix;
gint y_incr = incr_src[0];
gint cb_incr = incr_src[1];
gint cr_incr = incr_src[2];
while (count-- > 0)
{
int r,g,b,y,cb,cr;
y = *y_src;
cb= *cb_src - 128;
cr= *cr_src - 128;
y_src += y_incr;
cb_src += cb_incr;
cr_src += cr_incr;
r = (FIX(1.0)*y + FIX(1.4022)*cr + FIX(0.5))>>16;
g = (FIX(1.0)*y - FIX(0.3456)*cb - FIX(0.7145)*cr + FIX(0.5))>>16;
b = (FIX(1.0)*y + FIX(1.7710)*cb + FIX(0.5))>>16;
if(((unsigned)r) > 255) r = ((r>>10)&255)^255;
if(((unsigned)g) > 255) g = ((g>>10)&255)^255;
if(((unsigned)b) > 255) b = ((b>>10)&255)^255;
*(rgb_dst++) = r;
*(rgb_dst++) = g;
*(rgb_dst++) = b;
}
}
static void
compose_ycbcr709f (guchar **src,
gint *incr_src,
gint numpix,
guchar *dst)
{
register const guchar *y_src = src[0];
register const guchar *cb_src = src[1];
register const guchar *cr_src = src[2];
register guchar *rgb_dst = dst;
register gint count = numpix;
gint y_incr = incr_src[0];
gint cb_incr = incr_src[1];
gint cr_incr = incr_src[2];
while (count-- > 0)
{
int r,g,b,y,cb,cr;
y = *y_src;
cb= *cb_src - 128;
cr= *cr_src - 128;
y_src += y_incr;
cb_src += cb_incr;
cr_src += cr_incr;
r = (FIX(1.0)*y + FIX(1.5748)*cr + FIX(0.5))>>16;
g = (FIX(1.0)*y - FIX(0.1873)*cb - FIX(0.4681)*cr + FIX(0.5))>>16;
b = (FIX(1.0)*y + FIX(1.8556)*cb + FIX(0.5))>>16;
if(((unsigned)r) > 255) r = ((r>>10)&255)^255;
if(((unsigned)g) > 255) g = ((g>>10)&255)^255;
if(((unsigned)b) > 255) b = ((b>>10)&255)^255;
*(rgb_dst++) = r;
*(rgb_dst++) = g;
*(rgb_dst++) = b;
}
}
static gboolean
compose_dialog (const gchar *compose_type,
gint32 drawable_ID)
{
GtkWidget *dlg;
GtkWidget *toggle;
GtkWidget *left_frame, *right_frame;
GtkWidget *left_vbox, *right_vbox;
GtkWidget *hbox;
GtkWidget *label;
GtkWidget *table;
GtkWidget *image;
GSList *group;
gint32 *layer_list;
gint nlayers;
gint j, compose_idx;
gboolean run;
/* Check default compose type */
compose_idx = -1;
for (j = 0; j < G_N_ELEMENTS (compose_dsc); j++)
{
if (g_ascii_strcasecmp (compose_type, compose_dsc[j].compose_type) == 0)
compose_idx = j;
}
if (compose_idx < 0) compose_idx = 0;
/* Save original image width/height */
composeint.width = gimp_drawable_width (drawable_ID);
composeint.height = gimp_drawable_height (drawable_ID);
gimp_ui_init ("compose", TRUE);
layer_list = gimp_image_get_layers (gimp_drawable_get_image (drawable_ID),
&nlayers);
dlg = gimp_dialog_new (_("Compose"), "compose",
NULL, 0,
gimp_standard_help_func, "plug-in-compose",
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OK, GTK_RESPONSE_OK,
NULL);
/* parameter settings */
hbox = gtk_hbox_new (FALSE, 12);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 12);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), hbox, TRUE, TRUE, 0);
gtk_widget_show (hbox);
/* The left frame keeps the compose type toggles */
left_frame = gimp_frame_new (_("Compose Channels"));
gtk_box_pack_start (GTK_BOX (hbox), left_frame, FALSE, FALSE, 0);
left_vbox = gtk_vbox_new (FALSE, 6);
gtk_container_add (GTK_CONTAINER (left_frame), left_vbox);
/* The right frame keeps the selection menues for images. */
/* Because the labels within this frame will change when a toggle */
/* in the left frame is changed, fill in the right part first. */
/* Otherwise it can occur, that a non-existing label might be changed. */
right_frame = gimp_frame_new (_("Channel Representations"));
gtk_box_pack_start (GTK_BOX (hbox), right_frame, TRUE, TRUE, 0);
right_vbox = gtk_vbox_new (FALSE, 6);
gtk_container_add (GTK_CONTAINER (right_frame), right_vbox);
table = gtk_table_new (MAX_COMPOSE_IMAGES, 3, FALSE);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_box_pack_start (GTK_BOX (right_vbox), table, TRUE, TRUE, 0);
gtk_widget_show (table);
for (j = 0; j < MAX_COMPOSE_IMAGES; j++)
{
GtkWidget *combo;
const gchar *text;
image = gtk_image_new_from_stock (compose_dsc[compose_idx].channel_icon[j],
GTK_ICON_SIZE_BUTTON);
composeint.channel_icon[j] = image;
gtk_table_attach (GTK_TABLE (table), image, 0, 1, j, j+1,
GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (image);
text = (compose_dsc[compose_idx].channel_name[j] ?
gettext (compose_dsc[compose_idx].channel_name[j]) : NULL);
composeint.channel_label[j] = label = gtk_label_new (text);
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 1, 2, j, j+1,
GTK_FILL, GTK_FILL, 0, 0);
gtk_widget_show (label);
if (nlayers >= compose_dsc[compose_idx].num_images)
composeint.select_ID[j] = layer_list[nlayers - (j + 1)];
else
composeint.select_ID[j] = drawable_ID;
combo = gimp_drawable_combo_box_new (check_gray, NULL);
gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (combo),
composeint.select_ID[j],
G_CALLBACK (gimp_int_combo_box_get_active),
&composeint.select_ID[j]);
gtk_table_attach (GTK_TABLE (table), combo, 2, 3, j, j+1,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_show (combo);
composeint.channel_menu[j] = combo;
}
g_free (layer_list);
/* Set sensitivity of last menu */
gtk_widget_set_sensitive (composeint.channel_menu[3],
compose_dsc[compose_idx].channel_name[3] != NULL);
/* Compose types */
group = NULL;
for (j = 0; j < G_N_ELEMENTS (compose_dsc); j++)
{
toggle = gtk_radio_button_new_with_label (group,
gettext (compose_dsc[j].compose_type));
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (left_vbox), toggle, TRUE, TRUE, 0);
composeint.compose_flag[j] = (j == compose_idx);
gtk_widget_show (toggle);
g_signal_connect (toggle, "toggled",
GTK_SIGNAL_FUNC (compose_type_toggle_update),
&(composeint.compose_flag[j]));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
composeint.compose_flag[j]);
}
gtk_widget_show (left_vbox);
gtk_widget_show (right_vbox);
gtk_widget_show (left_frame);
gtk_widget_show (right_frame);
gtk_widget_show (dlg);
run = (gimp_dialog_run (GIMP_DIALOG (dlg)) == GTK_RESPONSE_OK);
gtk_widget_destroy (dlg);
if (run)
{
gint j;
for (j = 0; j < MAX_COMPOSE_IMAGES; j++)
composevals.compose_ID[j] = composeint.select_ID[j];
for (j = 0; j < G_N_ELEMENTS (compose_dsc); j++)
{
if (composeint.compose_flag[j])
{
strcpy (composevals.compose_type, compose_dsc[j].compose_type);
break;
}
}
}
return run;
}
/* Compose interface functions */
static gboolean
check_gray (gint32 image_id,
gint32 drawable_id,
gpointer data)
{
return ((gimp_image_base_type (image_id) == GIMP_GRAY) &&
(gimp_image_width (image_id) == composeint.width) &&
(gimp_image_height (image_id) == composeint.height));
}
static void
compose_type_toggle_update (GtkWidget *widget,
gpointer data)
{
gboolean *toggle_val;
gint compose_idx, j;
toggle_val = (gboolean *) data;
if (GTK_TOGGLE_BUTTON (widget)->active)
{
const gchar *text;
*toggle_val = TRUE;
compose_idx = toggle_val - &(composeint.compose_flag[0]);
for (j = 0; j < MAX_COMPOSE_IMAGES; j++)
{
text = (compose_dsc[compose_idx].channel_name[j] ?
gettext (compose_dsc[compose_idx].channel_name[j]) : NULL);
gtk_label_set_text (GTK_LABEL (composeint.channel_label[j]), text);
gtk_image_set_from_stock (GTK_IMAGE (composeint.channel_icon[j]),
compose_dsc[compose_idx].channel_icon[j],
GTK_ICON_SIZE_BUTTON);
}
/* Set sensitivity of last menu */
gtk_widget_set_sensitive (composeint.channel_menu[3],
compose_dsc[compose_idx].channel_name[3] != NULL);
}
else
{
*toggle_val = FALSE;
}
}
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