gimp/app/convert.c

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172 KiB
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1997-11-25 06:05:25 +08:00
/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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.
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*/
/*
* TODO for Convert:
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*
* Use palette of another open INDEXED image
*
* Do error-splitting trick for GREY->INDEXED
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*/
/*
* 2000/01/30 - Use palette_selector instead of option_menu for custom
* palette. Use libgimp callback functions. [Sven]
*
* 99/09/01 - Created a low-bleed FS-dither option. [Adam]
*
* 99/08/29 - Deterministic colour dithering to arbitrary palettes.
* Ideal for animations that are going to be delta-optimized or simply
* don't want to look 'busy' in static areas. Also a bunch of bugfixes
* and tweaks. [Adam]
*
* 99/08/28 - Deterministic alpha dithering over layers, reduced bleeding
* of transparent values into opaque values, added optional stage to
* remove duplicate or unused colour entries from final colourmap. [Adam]
*
* 99/02/24 - Many revisions to the box-cut quantizer used in RGB->INDEXED
* conversion. Box to be cut is chosen on the basis of posessing an axis
* with the largest sum of weighted perceptible error, rather than based on
* volume or population. The box is split along this axis rather than its
* longest axis, at the point of error mean rather than simply at its centre.
* Error-limiting in the F-S dither has been disabled - it may become optional
* again later. If you're convinced that you have an image where the old
* dither looks better, let me know. [Adam]
*
* 99/01/10 - Hourglass... [Adam]
*
* 98/07/25 - Convert-to-indexed now remembers the last invocation's
* settings. Also, GRAY->INDEXED more flexible. [Adam]
*
* 98/07/05 - Sucked the warning about quantizing to too many colours into
* a text widget embedded in the dialog, improved intelligence of dialog
* to default 'custom palette' selection to 'Web' if available, and
* in this case not bother to present the native WWW-palette radio
* button. [Adam]
*
* 98/04/13 - avoid a division by zero when converting an empty gray-scale
* image (who would like to do such a thing anyway??) [Sven ]
*
* 98/03/23 - fixed a longstanding fencepost - hopefully the *right*
* way, *again*. [Adam]
*
* 97/11/14 - added a proper pdb interface and support for dithering
* to custom palettes (based on a patch by Eric Hernes) [Yosh]
*
* 97/11/04 - fixed the accidental use of the colour-counting case
* when palette_type is WEB or MONO. [Adam]
*
* 97/10/25 - colour-counting implemented (could use some hashing, but
* performance actually seems okay) - now RGB->INDEXED conversion isn't
* destructive if it doesn't have to be. [Adam]
*
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* 97/10/14 - fixed divide-by-zero when converting a completely transparent
* RGB image to indexed. [Adam]
*
* 97/07/01 - started todo/revision log. Put code back in to
* eliminate full-alpha pixels from RGB histogram.
* [Adam D. Moss - adam@gimp.org]
*/
app/appenv.h New file. Includes <math.h>. Move G_PI, RINT(), ROUND() etc 1999-09-01 Tor Lillqvist <tml@iki.fi> * app/appenv.h * libgimp/gimpmath.h: New file. Includes <math.h>. Move G_PI, RINT(), ROUND() etc from app/appenv.h here, so plug-ins can use them, too. Remove some commented-out old stuff in appenv.h. * libgimp/gimp.h: Include gimpmath.h. * libgimp/gimp.c (gimp_main): Win32: Don't install signal handlers, we can't do anything useful in the handler ourselves anyway (it would be nice to print out a backtrace, but that seems pretty hard to do, even if not impossible). Let Windows inform the user about the crash. If the plug-in was compiled with MSVC, and the user also has it, she is offered a chance to start the debugger automatically anyway. * app/*several*.c: Include gimpmath.h for G_PI etc. Don't include <math.h>, as gimpmath.h includes it. * plug-ins/*/*many*.c: Include config.h. Don't include <math.h>. Remove all the duplicated definitions of G_PI and rint(). Use RINT() instead of rint(). * app/app_procs.[ch]: app_exit() takes a gboolean. * app/batch.c * app/commands.c * app/interface.c: Call app_exit() with FALSE or TRUE. * app/main.c (on_error): Call gimp_fatal_error. (main): Don't install any signal handler on Win32 here, either. * app/errors.c (gimp_fatal_error, gimp_terminate): Win32: Format the message and call MessageBox with it. g_on_error_query doesn't do anything useful on Win32, and printf'ing a message to stdout or stderr doesn't do anything, either, in a windowing application.
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "appenv.h"
#include "convert.h"
#include "cursorutil.h"
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#include "drawable.h"
#include "floating_sel.h"
#include "fsdither.h"
#include "gdisplay.h"
app/Makefile.am app/gimphelp.[ch] new files 1999-09-27 Michael Natterer <mitch@gimp.org> * app/Makefile.am * app/gimphelp.[ch] * app/gimpui.[ch]: new files * app/interface.[ch] * app/preferences_dialog.[ch] The GIMP Help System part 1: Press "F1" in any dialog to pop up the help page for this dialog. Moved the widget constructors from preferences_dialog.[ch] and the query boxes from interface.[ch] to gimpui.[ch]. The dialog constructors take a help_func and a help_data parameter and install the "F1" accelerator which emits the new "help" signal. The "help" signal callback calls help_func(help_data) which finally has to call gimp_help() which in turn invokes the help browser. Still have to find a proper way to (1) prevent "F1" being assigned to some menu item and (2) to catch "F1" while browsing the menu trees in order to pop up the help for the selected item. * app/menus.c: a <Toolbox>/File/Help... menu item. * app/commands.[ch]: a command callback for the "Help..." menu item. * app/gimprc.[ch]: new boolean gimprc variable "use_help". * app/info_dialog.[ch]: pass a help function and data to the info dialog constructor. * app/tools.[ch]: store the tools help page names in the tool info structure. Export a special tools_help_func() which shows the help page for the active tool. * app/[all files calling a dialog constructor]: pass the dialog's help page to the constructor. Most dialogs are now created by gimp_dialog_new() which also sets up the action_area and the WM delete event callback, so I removed the resp. code from these files. Fixed some minor bugs and did some other stuff but didn't change any logic except dialog creation. * plug-ins/helpbrowser/helpbrowser.c: don't try to call a running help browser and don't install any menu path (all done in app/gimphelp.[ch] now).
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#include "gimpui.h"
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#include "interface.h"
#include "undo.h"
#include "palette.h"
#include "palette_select.h"
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#include "libgimp/gimpcolorspace.h"
#include "libgimp/gimpintl.h"
app/appenv.h New file. Includes <math.h>. Move G_PI, RINT(), ROUND() etc 1999-09-01 Tor Lillqvist <tml@iki.fi> * app/appenv.h * libgimp/gimpmath.h: New file. Includes <math.h>. Move G_PI, RINT(), ROUND() etc from app/appenv.h here, so plug-ins can use them, too. Remove some commented-out old stuff in appenv.h. * libgimp/gimp.h: Include gimpmath.h. * libgimp/gimp.c (gimp_main): Win32: Don't install signal handlers, we can't do anything useful in the handler ourselves anyway (it would be nice to print out a backtrace, but that seems pretty hard to do, even if not impossible). Let Windows inform the user about the crash. If the plug-in was compiled with MSVC, and the user also has it, she is offered a chance to start the debugger automatically anyway. * app/*several*.c: Include gimpmath.h for G_PI etc. Don't include <math.h>, as gimpmath.h includes it. * plug-ins/*/*many*.c: Include config.h. Don't include <math.h>. Remove all the duplicated definitions of G_PI and rint(). Use RINT() instead of rint(). * app/app_procs.[ch]: app_exit() takes a gboolean. * app/batch.c * app/commands.c * app/interface.c: Call app_exit() with FALSE or TRUE. * app/main.c (on_error): Call gimp_fatal_error. (main): Don't install any signal handler on Win32 here, either. * app/errors.c (gimp_fatal_error, gimp_terminate): Win32: Format the message and call MessageBox with it. g_on_error_query doesn't do anything useful on Win32, and printf'ing a message to stdout or stderr doesn't do anything, either, in a windowing application.
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#include "libgimp/gimpmath.h"
#include "layer_pvt.h" /* ick. */
#include "drawable_pvt.h" /* ick ick. */
#include "tile_manager_pvt.h" /* ick ick ick. */
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#define PRECISION_R 6
#define PRECISION_G 6
#define PRECISION_B 6
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#define HIST_R_ELEMS (1<<PRECISION_R)
#define HIST_G_ELEMS (1<<PRECISION_G)
#define HIST_B_ELEMS (1<<PRECISION_B)
#define MR HIST_G_ELEMS*HIST_B_ELEMS
#define MG HIST_B_ELEMS
#define BITS_IN_SAMPLE 8
#define R_SHIFT (BITS_IN_SAMPLE-PRECISION_R)
#define G_SHIFT (BITS_IN_SAMPLE-PRECISION_G)
#define B_SHIFT (BITS_IN_SAMPLE-PRECISION_B)
/* this has to match the INTENSITY definition in libgimp/gimpcolorspace.h */
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#define R_SCALE 30 /* scale R distances by this much */
#define G_SCALE 59 /* scale G distances by this much */
#define B_SCALE 11 /* and B by this much */
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static const unsigned char webpal[] =
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{
255,255,255,255,255,204,255,255,153,255,255,102,255,255,51,255,255,0,255,
204,255,255,204,204,255,204,153,255,204,102,255,204,51,255,204,0,255,153,
255,255,153,204,255,153,153,255,153,102,255,153,51,255,153,0,255,102,255,
255,102,204,255,102,153,255,102,102,255,102,51,255,102,0,255,51,255,255,
51,204,255,51,153,255,51,102,255,51,51,255,51,0,255,0,255,255,0,
204,255,0,153,255,0,102,255,0,51,255,0,0,204,255,255,204,255,204,
204,255,153,204,255,102,204,255,51,204,255,0,204,204,255,204,204,204,204,
204,153,204,204,102,204,204,51,204,204,0,204,153,255,204,153,204,204,153,
153,204,153,102,204,153,51,204,153,0,204,102,255,204,102,204,204,102,153,
204,102,102,204,102,51,204,102,0,204,51,255,204,51,204,204,51,153,204,
51,102,204,51,51,204,51,0,204,0,255,204,0,204,204,0,153,204,0,
102,204,0,51,204,0,0,153,255,255,153,255,204,153,255,153,153,255,102,
153,255,51,153,255,0,153,204,255,153,204,204,153,204,153,153,204,102,153,
204,51,153,204,0,153,153,255,153,153,204,153,153,153,153,153,102,153,153,
51,153,153,0,153,102,255,153,102,204,153,102,153,153,102,102,153,102,51,
153,102,0,153,51,255,153,51,204,153,51,153,153,51,102,153,51,51,153,
51,0,153,0,255,153,0,204,153,0,153,153,0,102,153,0,51,153,0,
0,102,255,255,102,255,204,102,255,153,102,255,102,102,255,51,102,255,0,
102,204,255,102,204,204,102,204,153,102,204,102,102,204,51,102,204,0,102,
153,255,102,153,204,102,153,153,102,153,102,102,153,51,102,153,0,102,102,
255,102,102,204,102,102,153,102,102,102,102,102,51,102,102,0,102,51,255,
102,51,204,102,51,153,102,51,102,102,51,51,102,51,0,102,0,255,102,
0,204,102,0,153,102,0,102,102,0,51,102,0,0,51,255,255,51,255,
204,51,255,153,51,255,102,51,255,51,51,255,0,51,204,255,51,204,204,
51,204,153,51,204,102,51,204,51,51,204,0,51,153,255,51,153,204,51,
153,153,51,153,102,51,153,51,51,153,0,51,102,255,51,102,204,51,102,
153,51,102,102,51,102,51,51,102,0,51,51,255,51,51,204,51,51,153,
51,51,102,51,51,51,51,51,0,51,0,255,51,0,204,51,0,153,51,
0,102,51,0,51,51,0,0,0,255,255,0,255,204,0,255,153,0,255,
102,0,255,51,0,255,0,0,204,255,0,204,204,0,204,153,0,204,102,
0,204,51,0,204,0,0,153,255,0,153,204,0,153,153,0,153,102,0,
153,51,0,153,0,0,102,255,0,102,204,0,102,153,0,102,102,0,102,
51,0,102,0,0,51,255,0,51,204,0,51,153,0,51,102,0,51,51,
0,51,0,0,0,255,0,0,204,0,0,153,0,0,102,0,0,51,0,0,0
};
/* Note: convert.c code currently makes assumptions about some of the
below defines, so small fixes are needed if they change... */
#define DM_WIDTH 128
#define DM_WIDTHMASK 127
#define DM_WIDTH_SHIFT 7
#define DM_HEIGHT 128
#define DM_HEIGHTMASK 127
/* This dither table was generated by Raph Levien using patented
technology (US Patent 5,276,535). The dither table itself is in the
public domain. */
static const guchar DM[128][128] =
{
{ 0, 41, 23, 5, 17, 39, 7, 15, 62, 23, 40, 51, 31, 47, 9, 32, 52, 27, 57, 25, 6, 61, 27, 52, 37, 7, 40, 63, 18, 36, 10, 42, 25, 62, 45, 34, 20, 42, 37, 14, 35, 29, 50, 10, 61, 2, 40, 8, 37, 12, 58, 22, 5, 41, 10, 39, 0, 60, 11, 46, 2, 55, 38, 17, 36, 59, 13, 54, 37, 56, 8, 29, 16, 13, 63, 22, 41, 55, 7, 20, 49, 14, 23, 55, 37, 23, 19, 36, 15, 49, 23, 63, 30, 14, 38, 27, 53, 13, 22, 41, 19, 31, 7, 19, 50, 30, 49, 16, 3, 32, 56, 40, 29, 34, 8, 48, 19, 45, 4, 51, 12, 46, 35, 49, 16, 42, 12, 62 },
{ 30, 57, 36, 54, 47, 34, 52, 27, 43, 4, 28, 7, 17, 36, 62, 13, 44, 7, 18, 48, 33, 21, 44, 14, 30, 47, 12, 33, 5, 55, 31, 58, 13, 30, 4, 17, 52, 10, 60, 26, 46, 0, 39, 27, 42, 22, 47, 25, 60, 32, 9, 38, 48, 17, 59, 30, 49, 18, 34, 25, 51, 19, 5, 48, 21, 8, 28, 46, 1, 32, 41, 19, 54, 47, 37, 18, 28, 11, 44, 30, 39, 56, 2, 33, 8, 42, 61, 28, 58, 8, 46, 9, 41, 4, 58, 7, 21, 48, 59, 10, 52, 14, 42, 57, 12, 25, 7, 53, 42, 24, 11, 50, 17, 59, 42, 2, 36, 60, 32, 17, 63, 29, 21, 7, 59, 32, 24, 39 },
{ 22, 8, 16, 32, 3, 25, 13, 57, 18, 45, 58, 39, 55, 20, 5, 42, 23, 34, 63, 1, 51, 10, 58, 4, 60, 23, 53, 27, 44, 21, 3, 48, 8, 50, 43, 54, 27, 32, 5, 55, 21, 58, 12, 53, 6, 36, 14, 50, 17, 29, 53, 15, 24, 52, 7, 36, 13, 42, 4, 53, 9, 35, 61, 26, 56, 32, 49, 15, 62, 23, 6, 60, 2, 31, 4, 48, 58, 38, 15, 61, 5, 25, 47, 28, 50, 15, 7, 40, 3, 32, 33, 52, 25, 50, 35, 42, 61, 3, 28, 36, 23, 63, 4, 33, 46, 62, 36, 23, 60, 6, 54, 28, 4, 37, 23, 55, 25, 8, 42, 54, 14, 6, 56, 38, 19, 52, 4, 46 },
{ 48, 53, 43, 12, 45, 63, 30, 37, 9, 34, 21, 1, 25, 47, 29, 58, 3, 54, 15, 39, 29, 17, 38, 35, 20, 43, 1, 49, 15, 59, 29, 39, 22, 35, 16, 23, 1, 47, 39, 18, 8, 44, 25, 31, 57, 19, 63, 4, 45, 3, 42, 61, 1, 31, 45, 20, 57, 29, 62, 21, 32, 41, 14, 44, 3, 39, 5, 34, 10, 43, 51, 35, 23, 52, 40, 10, 21, 1, 53, 18, 51, 43, 12, 62, 18, 54, 26, 51, 20, 57, 14, 1, 62, 16, 11, 18, 32, 39, 17, 44, 1, 48, 26, 37, 18, 2, 51, 14, 28, 45, 35, 18, 57, 13, 47, 11, 51, 20, 2, 39, 31, 47, 25, 1, 50, 11, 60, 7 },
{ 18, 28, 1, 56, 21, 10, 51, 2, 46, 54, 14, 61, 11, 50, 13, 38, 19, 31, 45, 9, 55, 24, 47, 5, 54, 9, 62, 11, 35, 8, 51, 14, 57, 6, 63, 40, 58, 14, 51, 28, 62, 34, 15, 48, 1, 41, 30, 35, 55, 21, 34, 11, 49, 37, 8, 52, 4, 23, 15, 43, 1, 58, 11, 23, 53, 16, 55, 26, 58, 18, 27, 12, 45, 14, 25, 63, 42, 33, 27, 35, 9, 31, 21, 38, 1, 44, 34, 12, 48, 38, 21, 44, 29, 47, 26, 53, 1, 46, 54, 8, 59, 29, 11, 55, 22, 41, 33, 20, 39, 1, 48, 9, 44, 32, 5, 62, 29, 44, 57, 23, 10, 58, 34, 43, 15, 37, 26, 33 },
{ 51, 38, 59, 24, 35, 42, 19, 60, 5, 32, 41, 26, 43, 33, 7, 53, 48, 11, 59, 23, 42, 2, 61, 30, 16, 40, 32, 24, 56, 41, 19, 33, 37, 26, 47, 9, 31, 22, 2, 45, 9, 54, 4, 37, 21, 52, 11, 23, 7, 57, 16, 25, 55, 18, 63, 27, 46, 39, 56, 10, 50, 37, 29, 47, 19, 63, 24, 9, 46, 2, 39, 60, 9, 57, 30, 7, 49, 11, 59, 3, 45, 57, 5, 60, 29, 22, 5, 60, 30, 9, 59, 18, 40, 6, 57, 36, 30, 12, 24, 34, 15, 40, 52, 6, 49, 9, 58, 4, 63, 12, 26, 61, 22, 53, 38, 16, 35, 14, 28, 50, 42, 17, 5, 28, 62, 20, 54, 12 },
{ 26, 6, 31, 15, 49, 6, 38, 27, 22, 49, 16, 56, 2, 62, 30, 21, 0, 36, 28, 6, 49, 32, 13, 52, 26, 50, 19, 46, 3, 26, 62, 0, 53, 12, 29, 3, 53, 41, 60, 24, 38, 13, 58, 16, 43, 9, 59, 39, 46, 28, 44, 40, 2, 33, 13, 41, 16, 6, 47, 31, 26, 17, 57, 6, 38, 0, 42, 36, 29, 52, 20, 31, 48, 0, 34, 56, 20, 36, 23, 54, 14, 41, 24, 37, 10, 55, 46, 25, 16, 45, 36, 4, 55, 23, 15, 8, 50, 62, 5, 56, 44, 20, 13, 28, 59, 31, 24, 47, 31, 52, 37, 17, 40, 0, 26, 49, 3, 60, 7, 33, 0, 61, 53, 40, 8, 45, 2, 41 },
{ 16, 63, 43, 4, 61, 24, 56, 13, 53, 8, 36, 12, 24, 41, 16, 46, 60, 26, 52, 39, 14, 57, 21, 37, 0, 45, 7, 59, 38, 17, 43, 10, 45, 20, 61, 43, 19, 11, 33, 17, 50, 32, 23, 61, 28, 49, 26, 0, 18, 51, 5, 60, 22, 58, 29, 0, 59, 34, 19, 62, 3, 52, 7, 44, 30, 59, 13, 50, 15, 62, 7, 17, 38, 22, 44, 15, 40, 4, 47, 28, 33, 17, 49, 16, 51, 40, 10, 56, 0, 53, 13, 49, 28, 38, 60, 21, 43, 19, 37, 27, 3, 51, 34, 39, 0, 45, 15, 43, 10, 21, 3, 55, 8, 33, 59, 10, 41, 18, 52, 24, 46, 20, 30, 13, 58, 22, 36, 57 },
{ 50, 34, 11, 47, 29, 17, 44, 0, 33, 63, 28, 46, 52, 5, 57, 10, 42, 18, 4, 63, 20, 8, 44, 10, 56, 34, 14, 29, 5, 54, 23, 59, 32, 49, 7, 34, 49, 27, 56, 0, 42, 7, 46, 3, 40, 6, 54, 32, 62, 13, 36, 10, 47, 8, 35, 49, 24, 51, 12, 40, 22, 35, 60, 12, 22, 51, 33, 4, 40, 25, 43, 55, 5, 54, 12, 61, 26, 51, 8, 62, 0, 53, 7, 63, 2, 32, 19, 34, 42, 24, 31, 63, 2, 10, 45, 33, 0, 48, 9, 61, 22, 47, 8, 62, 18, 56, 7, 54, 27, 57, 46, 30, 50, 19, 45, 30, 56, 36, 22, 47, 11, 38, 3, 51, 32, 48, 18, 9 },
{ 0, 21, 40, 19, 52, 9, 37, 48, 20, 40, 3, 18, 27, 38, 35, 22, 31, 56, 13, 35, 46, 28, 60, 40, 27, 18, 61, 50, 41, 30, 7, 36, 2, 25, 16, 57, 5, 15, 47, 29, 55, 19, 30, 52, 15, 34, 20, 12, 43, 30, 20, 54, 25, 44, 53, 12, 38, 5, 55, 27, 48, 15, 33, 27, 45, 8, 19, 28, 56, 11, 33, 49, 18, 36, 29, 2, 45, 16, 39, 19, 31, 43, 27, 35, 20, 52, 26, 6, 61, 11, 41, 17, 29, 51, 20, 56, 25, 32, 41, 17, 53, 31, 25, 14, 42, 23, 35, 16, 38, 6, 34, 12, 15, 62, 6, 21, 13, 1, 63, 9, 55, 27, 43, 25, 14, 4, 31, 55 },
{ 44, 29, 61, 2, 35, 58, 26, 15, 60, 10, 51, 59, 14, 55, 8, 50, 2, 44, 25, 51, 1, 33, 16, 4, 48, 36, 2, 21, 12, 57, 48, 13, 51, 55, 40, 28, 37, 62, 8, 39, 12, 63, 36, 10, 59, 24, 56, 47, 9, 50, 41, 1, 32, 17, 6, 21, 61, 30, 9, 43, 1, 54, 41, 2, 54, 37, 48, 61, 1, 46, 21, 3, 58, 24, 50, 32, 60, 10, 57, 25, 46, 12, 59, 4, 45, 13, 57, 47, 27, 39, 5, 58, 47, 14, 35, 4, 52, 13, 60, 6, 36, 10, 45, 55, 4, 50, 29, 2, 61, 50, 25, 58, 44, 24, 36, 42, 54, 28, 40, 32, 16, 56, 6, 62, 46, 39, 60, 23 },
{ 7, 48, 14, 54, 23, 40, 4, 45, 30, 22, 42, 32, 1, 44, 20, 29, 58, 8, 37, 19, 41, 54, 24, 58, 9, 53, 25, 46, 34, 16, 23, 38, 27, 11, 18, 1, 52, 21, 35, 22, 48, 5, 25, 45, 18, 38, 2, 27, 35, 4, 57, 15, 62, 39, 57, 28, 42, 16, 36, 60, 24, 18, 10, 63, 20, 5, 16, 23, 37, 14, 59, 27, 41, 8, 13, 42, 21, 35, 6, 50, 3, 38, 15, 48, 30, 39, 17, 3, 49, 14, 53, 33, 24, 7, 61, 44, 11, 39, 23, 49, 19, 58, 1, 32, 36, 12, 60, 41, 20, 13, 41, 4, 39, 1, 48, 8, 18, 51, 14, 44, 5, 37, 21, 34, 1, 26, 10, 37 },
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{ 58, 42, 60, 4, 31, 59, 22, 63, 35, 38, 9, 54, 1, 57, 8, 51, 16, 58, 27, 53, 3, 38, 30, 15, 27, 6, 19, 56, 10, 50, 21, 36, 47, 5, 43, 28, 51, 32, 13, 46, 18, 54, 16, 43, 63, 12, 36, 59, 22, 34, 5, 52, 17, 59, 27, 41, 0, 19, 55, 37, 13, 43, 6, 34, 41, 10, 36, 55, 19, 44, 3, 16, 58, 27, 49, 25, 32, 62, 17, 55, 13, 63, 18, 52, 25, 37, 17, 48, 13, 32, 5, 46, 28, 37, 14, 43, 25, 5, 51, 39, 3, 52, 33, 22, 8, 40, 12, 4, 57, 9, 46, 39, 28, 58, 13, 62, 17, 42, 19, 36, 0, 47, 16, 43, 24, 21, 54, 13 },
{ 25, 9, 23, 50, 36, 8, 45, 14, 3, 51, 16, 28, 44, 12, 42, 29, 4, 26, 10, 47, 22, 61, 18, 54, 51, 39, 46, 13, 41, 26, 58, 7, 18, 39, 12, 57, 15, 1, 52, 27, 41, 23, 48, 1, 27, 45, 18, 2, 57, 26, 55, 8, 43, 31, 6, 58, 14, 51, 40, 5, 61, 31, 24, 54, 17, 60, 22, 1, 39, 30, 53, 45, 36, 13, 43, 5, 45, 2, 37, 6, 34, 42, 2, 39, 10, 62, 7, 54, 40, 18, 60, 15, 52, 21, 63, 8, 55, 46, 15, 30, 23, 13, 62, 16, 50, 24, 58, 31, 48, 21, 34, 2, 49, 7, 31, 37, 26, 48, 9, 61, 40, 11, 52, 2, 60, 40, 4, 37 },
{ 52, 28, 39, 16, 54, 19, 29, 55, 42, 20, 58, 33, 24, 63, 18, 55, 39, 62, 43, 34, 12, 40, 6, 35, 2, 25, 8, 62, 34, 1, 31, 42, 61, 27, 53, 24, 40, 61, 34, 8, 59, 4, 30, 56, 40, 6, 53, 42, 10, 48, 16, 37, 12, 46, 21, 36, 47, 11, 28, 45, 22, 10, 57, 2, 49, 31, 14, 44, 61, 11, 25, 6, 23, 63, 18, 36, 28, 56, 20, 51, 11, 48, 27, 56, 32, 22, 45, 30, 2, 42, 27, 39, 1, 44, 23, 31, 38, 22, 11, 61, 43, 54, 4, 47, 35, 2, 44, 16, 28, 54, 12, 62, 18, 43, 10, 52, 1, 58, 33, 15, 29, 56, 20, 34, 9, 30, 48, 17 },
{ 46, 2, 56, 11, 41, 1, 49, 6, 27, 47, 2, 48, 5, 32, 37, 3, 13, 19, 32, 1, 55, 28, 60, 17, 43, 59, 32, 20, 49, 16, 55, 23, 14, 46, 2, 36, 6, 30, 20, 49, 12, 47, 35, 14, 21, 60, 29, 14, 35, 24, 46, 1, 56, 29, 53, 8, 33, 23, 56, 1, 35, 46, 20, 39, 26, 4, 53, 28, 17, 38, 60, 34, 48, 9, 55, 15, 46, 7, 41, 31, 60, 24, 16, 36, 1, 59, 19, 52, 35, 6, 55, 11, 59, 33, 7, 57, 4, 29, 48, 1, 19, 26, 37, 30, 18, 63, 37, 6, 59, 1, 40, 24, 56, 33, 46, 22, 35, 7, 24, 53, 39, 5, 26, 45, 55, 18, 62, 7 },
{ 20, 60, 29, 34, 20, 62, 33, 52, 10, 36, 13, 60, 41, 21, 50, 27, 56, 49, 8, 51, 21, 45, 11, 48, 8, 23, 53, 3, 29, 44, 5, 52, 9, 32, 50, 17, 43, 56, 3, 38, 24, 10, 62, 25, 51, 9, 33, 49, 61, 7, 30, 62, 22, 19, 2, 42, 63, 5, 49, 18, 60, 15, 52, 7, 43, 56, 23, 50, 5, 50, 2, 20, 41, 30, 1, 52, 22, 61, 14, 26, 3, 43, 53, 7, 47, 28, 11, 14, 23, 58, 33, 25, 47, 13, 50, 17, 40, 54, 34, 60, 41, 6, 59, 14, 50, 7, 25, 55, 20, 42, 51, 8, 27, 4, 16, 60, 28, 50, 44, 3, 22, 49, 63, 12, 33, 1, 43, 31 },
{ 36, 5, 46, 8, 44, 24, 13, 39, 25, 57, 31, 18, 8, 52, 10, 45, 6, 30, 36, 24, 63, 4, 33, 26, 57, 40, 15, 56, 37, 12, 40, 25, 37, 58, 11, 63, 21, 45, 16, 60, 31, 53, 18, 33, 3, 45, 23, 0, 20, 54, 40, 15, 50, 38, 60, 16, 25, 42, 29, 38, 7, 41, 25, 62, 18, 33, 8, 35, 42, 16, 32, 56, 12, 39, 59, 19, 34, 9, 49, 38, 57, 12, 21, 50, 14, 40, 61, 44, 50, 9, 49, 19, 3, 29, 35, 62, 12, 24, 7, 18, 52, 32, 10, 46, 21, 41, 32, 11, 36, 29, 14, 34, 60, 38, 54, 11, 41, 14, 19, 57, 32, 16, 7, 41, 51, 25, 14, 57 },
{ 53, 18, 26, 50, 15, 58, 4, 63, 17, 43, 7, 40, 61, 35, 15, 41, 23, 60, 16, 38, 14, 42, 19, 50, 0, 31, 10, 46, 27, 63, 18, 60, 0, 20, 29, 39, 8, 26, 37, 5, 42, 0, 44, 39, 57, 17, 58, 41, 28, 37, 4, 32, 9, 44, 12, 31, 54, 10, 59, 14, 27, 53, 12, 36, 0, 47, 13, 63, 21, 58, 10, 24, 50, 27, 4, 26, 44, 53, 31, 0, 18, 42, 29, 33, 57, 4, 32, 26, 0, 38, 16, 61, 41, 53, 20, 0, 42, 44, 49, 27, 10, 56, 39, 0, 57, 15, 53, 49, 3, 61, 22, 47, 17, 5, 49, 26, 2, 63, 39, 10, 47, 27, 37, 23, 4, 59, 38, 10 },
{ 23, 39, 61, 3, 37, 28, 48, 31, 0, 34, 51, 23, 2, 26, 58, 0, 53, 11, 46, 1, 57, 29, 52, 14, 37, 61, 21, 35, 2, 49, 7, 34, 47, 55, 4, 33, 54, 13, 58, 52, 19, 50, 22, 7, 13, 29, 36, 11, 51, 17, 60, 25, 55, 4, 34, 51, 0, 35, 20, 48, 32, 3, 51, 30, 59, 28, 40, 3, 46, 29, 54, 43, 7, 62, 47, 11, 39, 4, 23, 46, 55, 8, 63, 5, 25, 37, 18, 46, 21, 56, 31, 5, 36, 8, 45, 58, 26, 15, 2, 36, 47, 21, 29, 44, 25, 34, 3, 27, 43, 10, 52, 0, 45, 30, 24, 36, 43, 18, 34, 59, 0, 52, 61, 15, 44, 19, 30, 49 },
{ 0, 27, 12, 43, 54, 9, 22, 53, 21, 46, 15, 55, 29, 47, 20, 33, 39, 28, 59, 35, 9, 44, 5, 24, 47, 7, 52, 17, 56, 22, 30, 42, 14, 26, 45, 18, 49, 1, 24, 34, 11, 27, 55, 32, 61, 47, 2, 56, 6, 44, 13, 47, 36, 27, 58, 22, 16, 47, 40, 4, 57, 38, 21, 45, 16, 9, 56, 26, 11, 38, 0, 22, 36, 17, 33, 57, 16, 30, 62, 15, 35, 40, 20, 45, 59, 10, 54, 8, 63, 13, 52, 27, 22, 57, 28, 12, 32, 51, 55, 22, 63, 4, 16, 54, 12, 62, 45, 19, 58, 13, 32, 40, 20, 56, 7, 57, 9, 54, 6, 29, 42, 21, 8, 55, 35, 47, 6, 41 },
{ 56, 33, 58, 32, 19, 35, 42, 6, 59, 11, 38, 5, 49, 12, 62, 7, 52, 17, 5, 25, 54, 20, 61, 31, 54, 27, 41, 11, 44, 5, 59, 12, 36, 51, 10, 61, 28, 41, 48, 9, 43, 63, 5, 40, 20, 8, 49, 26, 34, 21, 58, 1, 18, 45, 7, 39, 61, 26, 8, 50, 23, 10, 63, 5, 55, 37, 19, 49, 52, 15, 59, 47, 13, 54, 1, 25, 42, 58, 10, 48, 3, 27, 50, 1, 17, 48, 34, 41, 16, 40, 2, 45, 10, 39, 17, 61, 5, 38, 19, 9, 41, 31, 60, 38, 5, 23, 36, 8, 30, 55, 24, 63, 12, 48, 14, 51, 31, 20, 45, 25, 12, 50, 32, 2, 28, 11, 62, 14 },
{ 44, 16, 7, 48, 1, 62, 16, 50, 27, 33, 61, 25, 17, 44, 31, 14, 22, 43, 32, 48, 18, 40, 8, 36, 3, 16, 33, 62, 23, 38, 25, 53, 2, 21, 41, 6, 22, 15, 59, 29, 16, 37, 26, 15, 52, 42, 23, 15, 54, 39, 10, 30, 53, 11, 49, 24, 2, 43, 55, 17, 34, 44, 15, 31, 24, 44, 2, 32, 7, 35, 25, 5, 40, 45, 29, 51, 6, 21, 37, 52, 24, 60, 13, 31, 53, 23, 2, 28, 49, 24, 31, 60, 20, 51, 1, 34, 48, 14, 59, 33, 50, 1, 18, 33, 48, 60, 17, 51, 39, 6, 38, 2, 35, 29, 40, 23, 1, 62, 15, 53, 37, 17, 46, 57, 40, 51, 24, 22 },
{ 5, 37, 52, 24, 45, 13, 40, 3, 45, 9, 19, 42, 56, 4, 37, 46, 56, 2, 63, 11, 51, 1, 49, 13, 59, 45, 39, 1, 48, 15, 58, 9, 46, 31, 54, 35, 57, 38, 3, 46, 56, 4, 47, 57, 1, 30, 38, 63, 3, 46, 28, 63, 41, 14, 33, 62, 19, 32, 13, 28, 61, 1, 53, 42, 11, 60, 22, 62, 27, 42, 61, 31, 19, 8, 61, 12, 32, 55, 2, 18, 33, 12, 43, 36, 9, 62, 30, 55, 6, 58, 35, 7, 43, 29, 54, 23, 43, 30, 3, 25, 11, 45, 52, 28, 7, 14, 42, 1, 22, 50, 16, 53, 19, 59, 4, 46, 33, 41, 4, 35, 58, 5, 26, 13, 20, 2, 34, 54 },
{ 30, 63, 21, 10, 26, 55, 29, 59, 23, 39, 53, 1, 36, 24, 59, 27, 10, 34, 23, 38, 30, 60, 22, 42, 28, 19, 9, 57, 30, 19, 43, 33, 13, 63, 3, 19, 11, 50, 31, 20, 14, 34, 10, 35, 17, 59, 7, 31, 19, 25, 50, 5, 20, 57, 29, 6, 52, 41, 4, 46, 20, 37, 26, 17, 49, 6, 39, 18, 53, 14, 3, 49, 57, 23, 34, 48, 14, 41, 28, 38, 56, 6, 58, 25, 39, 19, 43, 15, 37, 11, 47, 18, 53, 4, 37, 9, 62, 21, 53, 40, 57, 24, 13, 40, 56, 26, 47, 31, 59, 25, 45, 27, 10, 43, 21, 61, 13, 27, 48, 9, 23, 43, 31, 62, 38, 59, 9, 47 },
{ 25, 4, 40, 60, 34, 6, 18, 36, 8, 57, 12, 30, 49, 14, 6, 54, 41, 16, 50, 6, 43, 15, 34, 4, 53, 24, 50, 35, 4, 51, 7, 55, 28, 24, 39, 44, 60, 7, 25, 62, 42, 53, 24, 61, 28, 45, 52, 12, 48, 37, 9, 35, 43, 3, 37, 48, 12, 58, 30, 52, 9, 59, 6, 57, 33, 29, 48, 4, 37, 45, 20, 34, 10, 39, 0, 60, 22, 45, 8, 63, 21, 42, 14, 49, 3, 56, 11, 46, 21, 61, 0, 42, 25, 13, 63, 17, 36, 8, 46, 16, 6, 35, 63, 0, 21, 37, 4, 57, 9, 34, 5, 61, 48, 32, 8, 37, 54, 17, 56, 30, 60, 0, 50, 16, 7, 29, 42, 17 },
{ 32, 50, 15, 48, 2, 43, 52, 25, 47, 16, 32, 63, 21, 52, 40, 19, 0, 61, 29, 58, 20, 56, 26, 46, 12, 55, 6, 22, 62, 32, 17, 40, 0, 49, 34, 8, 27, 32, 48, 0, 21, 39, 5, 44, 12, 6, 22, 40, 0, 57, 16, 60, 23, 17, 54, 22, 36, 15, 24, 39, 19, 34, 47, 23, 0, 54, 13, 51, 24, 9, 55, 16, 52, 27, 44, 20, 4, 54, 26, 49, 0, 30, 46, 16, 29, 51, 34, 4, 52, 28, 33, 15, 57, 39, 26, 49, 0, 56, 27, 31, 48, 20, 43, 29, 53, 11, 46, 19, 41, 13, 55, 18, 0, 57, 26, 51, 2, 44, 6, 38, 14, 40, 22, 45, 36, 53, 3, 57 },
{ 44, 12, 37, 28, 22, 57, 11, 38, 0, 51, 9, 41, 4, 29, 11, 47, 33, 45, 12, 26, 3, 36, 9, 63, 31, 16, 38, 44, 14, 47, 25, 61, 20, 58, 15, 47, 17, 57, 13, 36, 9, 51, 18, 29, 50, 36, 54, 20, 61, 27, 32, 13, 53, 44, 9, 27, 0, 63, 45, 2, 56, 10, 14, 43, 41, 28, 58, 11, 35, 60, 30, 41, 6, 63, 11, 51, 37, 32, 15, 10, 35, 53, 5, 61, 22, 7, 26, 59, 23, 9, 44, 48, 21, 3, 51, 32, 24, 41, 12, 61, 2, 55, 9, 15, 35, 58, 28, 15, 62, 30, 37, 23, 42, 29, 11, 17, 35, 24, 63, 20, 52, 28, 8, 55, 11, 23, 47, 19 },
{ 0, 56, 8, 53, 14, 31, 61, 20, 55, 28, 62, 18, 35, 60, 25, 57, 7, 23, 39, 54, 47, 17, 43, 0, 40, 59, 29, 2, 56, 10, 37, 5, 43, 11, 29, 52, 1, 23, 54, 41, 59, 30, 55, 1, 62, 15, 33, 4, 43, 10, 47, 39, 1, 31, 40, 60, 49, 33, 7, 55, 26, 50, 31, 61, 8, 18, 21, 32, 44, 1, 25, 47, 18, 36, 30, 23, 59, 7, 40, 59, 27, 19, 38, 32, 44, 54, 40, 17, 38, 60, 27, 6, 35, 55, 10, 14, 44, 5, 50, 17, 38, 26, 42, 50, 18, 3, 44, 52, 2, 49, 7, 52, 15, 46, 62, 39, 55, 10, 31, 48, 3, 58, 33, 18, 61, 34, 13, 59 },
{ 39, 27, 63, 20, 35, 41, 4, 45, 26, 5, 38, 13, 44, 2, 50, 17, 37, 52, 2, 13, 28, 58, 24, 51, 21, 8, 34, 48, 27, 42, 18, 51, 31, 56, 5, 36, 38, 44, 4, 17, 26, 11, 38, 23, 42, 8, 56, 39, 24, 51, 5, 56, 21, 59, 14, 6, 18, 42, 22, 35, 16, 37, 3, 25, 39, 46, 63, 5, 50, 17, 58, 8, 55, 3, 50, 12, 43, 17, 47, 2, 51, 9, 62, 12, 1, 35, 13, 50, 1, 37, 12, 51, 19, 29, 46, 59, 22, 58, 33, 45, 22, 60, 10, 32, 61, 39, 8, 33, 25, 36, 20, 60, 38, 4, 21, 5, 28, 45, 12, 18, 42, 11, 49, 1, 27, 40, 6, 30 },
{ 24, 16, 42, 1, 50, 10, 48, 17, 33, 43, 24, 48, 21, 55, 31, 42, 10, 21, 63, 35, 49, 6, 33, 13, 41, 53, 10, 20, 60, 6, 53, 26, 12, 41, 22, 60, 14, 28, 63, 33, 49, 3, 45, 16, 48, 26, 14, 46, 18, 30, 35, 26, 8, 50, 29, 51, 25, 57, 12, 47, 53, 9, 62, 20, 54, 2, 36, 15, 40, 28, 33, 13, 38, 24, 46, 1, 29, 56, 33, 20, 44, 24, 41, 26, 57, 20, 63, 8, 30, 55, 5, 41, 62, 8, 34, 2, 37, 10, 19, 6, 37, 1, 53, 23, 5, 27, 58, 22, 43, 12, 50, 26, 9, 34, 54, 32, 49, 1, 59, 37, 22, 46, 25, 36, 51, 15, 54, 46 },
{ 52, 7, 45, 33, 26, 58, 14, 60, 7, 54, 3, 58, 8, 34, 14, 5, 59, 30, 18, 44, 8, 22, 48, 62, 3, 26, 55, 38, 23, 16, 39, 1, 62, 24, 49, 9, 53, 19, 46, 7, 19, 60, 31, 58, 2, 34, 53, 7, 59, 2, 62, 42, 46, 19, 36, 11, 44, 4, 38, 28, 1, 43, 32, 51, 12, 29, 56, 22, 52, 2, 62, 49, 22, 60, 14, 35, 63, 5, 25, 57, 14, 53, 4, 46, 18, 31, 42, 22, 47, 20, 58, 31, 16, 43, 23, 54, 30, 42, 52, 57, 29, 49, 30, 13, 45, 48, 16, 55, 6, 63, 1, 44, 14, 58, 19, 47, 15, 24, 51, 34, 6, 55, 5, 63, 20, 41, 21, 9 },
{ 30, 62, 18, 55, 5, 23, 39, 29, 49, 30, 15, 36, 28, 46, 60, 25, 39, 46, 4, 32, 61, 40, 15, 30, 36, 45, 14, 2, 49, 33, 57, 45, 18, 32, 3, 45, 30, 2, 35, 52, 40, 27, 13, 21, 38, 63, 20, 28, 37, 23, 16, 10, 13, 55, 2, 62, 21, 32, 60, 17, 58, 23, 5, 40, 16, 48, 7, 45, 10, 26, 43, 19, 6, 31, 52, 21, 39, 16, 48, 9, 37, 28, 36, 55, 7, 48, 3, 59, 15, 45, 25, 1, 53, 13, 47, 7, 62, 15, 4, 25, 12, 41, 18, 60, 38, 11, 34, 19, 39, 31, 29, 56, 23, 42, 3, 27, 60, 41, 8, 16, 61, 29, 43, 9, 32, 2, 60, 34 },
{ 3, 38, 13, 37, 52, 44, 2, 19, 12, 42, 63, 19, 40, 1, 20, 50, 12, 55, 15, 56, 27, 1, 54, 11, 57, 18, 32, 63, 44, 4, 29, 13, 37, 61, 35, 16, 42, 57, 12, 22, 6, 55, 43, 10, 50, 5, 44, 11, 48, 52, 34, 58, 28, 41, 38, 30, 7, 52, 11, 49, 30, 14, 45, 27, 59, 34, 21, 38, 32, 58, 11, 36, 56, 42, 9, 41, 3, 54, 31, 42, 0, 60, 16, 11, 39, 24, 52, 33, 6, 36, 10, 40, 32, 60, 26, 20, 39, 28, 47, 34, 63, 8, 54, 3, 24, 56, 0, 51, 13, 47, 16, 40, 7, 35, 52, 11, 36, 4, 57, 30, 39, 13, 18, 50, 58, 28, 12, 48 },
{ 57, 24, 49, 21, 10, 31, 61, 36, 56, 0, 22, 53, 11, 56, 32, 7, 36, 27, 41, 9, 46, 19, 34, 42, 25, 7, 50, 9, 28, 21, 54, 8, 50, 7, 27, 59, 10, 25, 48, 62, 37, 0, 33, 58, 25, 18, 32, 61, 0, 15, 45, 5, 50, 3, 23, 55, 47, 17, 40, 6, 60, 34, 53, 8, 41, 0, 61, 13, 54, 4, 46, 28, 0, 17, 48, 27, 58, 13, 23, 61, 33, 21, 50, 30, 62, 8, 14, 29, 56, 27, 61, 49, 17, 2, 44, 11, 51, 0, 59, 17, 40, 20, 32, 47, 36, 21, 42, 28, 60, 4, 54, 10, 59, 17, 30, 62, 21, 43, 26, 48, 0, 56, 36, 25, 8, 44, 39, 17 },
{ 10, 42, 4, 59, 27, 47, 8, 23, 51, 32, 45, 6, 37, 26, 48, 43, 62, 0, 21, 53, 38, 12, 51, 5, 60, 47, 24, 37, 59, 15, 35, 47, 22, 55, 0, 50, 21, 40, 6, 29, 15, 52, 24, 8, 41, 55, 13, 29, 40, 56, 24, 31, 19, 33, 61, 15, 0, 35, 24, 42, 21, 2, 19, 57, 24, 15, 30, 50, 20, 25, 40, 16, 57, 34, 61, 8, 29, 45, 6, 49, 11, 47, 2, 44, 19, 57, 38, 50, 12, 42, 21, 4, 35, 52, 28, 56, 23, 36, 13, 45, 4, 52, 27, 14, 6, 62, 9, 45, 21, 37, 25, 46, 33, 49, 0, 44, 7, 53, 13, 19, 53, 31, 3, 47, 15, 56, 22, 51 },
{ 35, 28, 53, 32, 1, 16, 54, 40, 9, 17, 25, 58, 14, 59, 3, 22, 16, 51, 31, 5, 23, 58, 28, 17, 35, 20, 0, 42, 11, 52, 3, 31, 41, 17, 43, 13, 32, 54, 18, 60, 32, 45, 17, 49, 2, 36, 51, 22, 7, 36, 9, 63, 48, 12, 46, 26, 43, 28, 63, 13, 48, 37, 51, 33, 5, 47, 55, 9, 42, 63, 7, 51, 24, 12, 37, 19, 55, 34, 18, 38, 15, 28, 54, 34, 5, 43, 22, 0, 48, 14, 54, 24, 58, 9, 38, 5, 32, 55, 21, 30, 49, 9, 59, 43, 30, 51, 35, 26, 7, 53, 2, 22, 14, 27, 57, 18, 38, 24, 33, 45, 10, 41, 20, 60, 37, 5, 32, 0 },
{ 63, 19, 15, 40, 62, 35, 14, 28, 46, 61, 4, 49, 35, 10, 29, 54, 33, 8, 45, 62, 37, 1, 43, 55, 10, 52, 61, 30, 19, 40, 25, 62, 11, 38, 27, 58, 36, 3, 46, 8, 39, 4, 62, 28, 47, 20, 4, 54, 47, 27, 43, 1, 21, 38, 8, 58, 10, 54, 4, 56, 9, 26, 12, 39, 60, 27, 18, 37, 1, 31, 35, 5, 45, 50, 2, 43, 26, 1, 59, 23, 56, 40, 7, 26, 58, 17, 32, 63, 25, 39, 7, 31, 45, 19, 63, 15, 48, 8, 37, 61, 16, 34, 1, 56, 18, 3, 15, 58, 49, 32, 63, 41, 55, 5, 40, 22, 50, 6, 59, 2, 63, 23, 52, 11, 26, 61, 44, 23 },
{ 11, 56, 46, 6, 22, 43, 58, 3, 34, 21, 38, 30, 18, 44, 52, 13, 41, 57, 17, 28, 14, 49, 25, 7, 33, 39, 26, 6, 56, 48, 1, 20, 56, 5, 46, 9, 19, 51, 30, 25, 56, 21, 35, 14, 57, 42, 16, 33, 10, 57, 17, 59, 41, 25, 53, 37, 20, 40, 30, 18, 31, 62, 44, 22, 3, 44, 11, 48, 23, 53, 18, 60, 29, 22, 62, 15, 53, 47, 10, 41, 3, 19, 52, 36, 13, 46, 10, 35, 3, 61, 41, 16, 1, 50, 26, 42, 18, 46, 2, 25, 54, 20, 39, 23, 47, 31, 41, 12, 38, 17, 8, 19, 31, 48, 12, 61, 9, 54, 29, 35, 15, 38, 6, 43, 34, 14, 7, 47 },
{ 39, 2, 33, 26, 53, 8, 18, 50, 41, 12, 53, 1, 63, 24, 19, 39, 2, 24, 47, 10, 60, 38, 19, 63, 48, 4, 15, 45, 32, 14, 60, 36, 29, 53, 23, 63, 34, 12, 61, 1, 43, 11, 53, 30, 1, 26, 60, 45, 23, 39, 3, 29, 12, 50, 4, 16, 51, 3, 45, 36, 50, 1, 16, 54, 35, 14, 57, 30, 58, 9, 46, 14, 41, 10, 32, 38, 4, 30, 21, 51, 32, 63, 25, 1, 60, 27, 53, 18, 51, 22, 28, 55, 34, 12, 40, 3, 60, 29, 57, 41, 6, 44, 11, 53, 8, 61, 24, 57, 1, 28, 44, 59, 36, 3, 34, 25, 41, 31, 16, 44, 22, 47, 28, 58, 1, 49, 54, 29 },
{ 58, 25, 50, 13, 38, 30, 60, 24, 6, 57, 27, 42, 9, 45, 6, 61, 30, 50, 4, 34, 29, 3, 46, 13, 22, 42, 58, 28, 9, 39, 23, 44, 7, 15, 44, 2, 40, 15, 47, 41, 23, 37, 7, 59, 38, 11, 34, 6, 62, 14, 52, 35, 55, 19, 32, 61, 33, 24, 57, 6, 22, 59, 29, 7, 49, 25, 40, 3, 17, 39, 27, 52, 0, 55, 16, 57, 24, 61, 36, 6, 29, 12, 48, 39, 20, 44, 6, 40, 33, 5, 48, 10, 57, 36, 22, 51, 33, 9, 24, 12, 62, 29, 50, 35, 14, 43, 5, 33, 47, 52, 13, 23, 10, 51, 56, 16, 46, 1, 49, 4, 61, 9, 52, 18, 31, 21, 36, 17 },
{ 19, 42, 9, 48, 2, 44, 11, 37, 48, 20, 33, 16, 55, 35, 49, 15, 37, 20, 59, 16, 53, 22, 56, 31, 50, 11, 34, 54, 16, 51, 4, 49, 33, 53, 21, 28, 56, 24, 31, 9, 52, 16, 48, 24, 44, 13, 51, 20, 31, 49, 18, 6, 34, 2, 44, 14, 47, 8, 15, 43, 13, 41, 33, 52, 20, 61, 7, 51, 34, 62, 4, 20, 36, 33, 43, 8, 46, 13, 53, 17, 45, 42, 9, 31, 52, 11, 30, 56, 13, 59, 17, 44, 27, 6, 62, 11, 43, 17, 49, 38, 26, 2, 16, 27, 58, 21, 54, 18, 26, 5, 35, 61, 43, 27, 7, 39, 14, 58, 37, 55, 20, 33, 13, 40, 62, 10, 55, 5 },
{ 51, 14, 61, 29, 59, 20, 55, 31, 0, 49, 11, 60, 3, 26, 22, 56, 0, 40, 12, 43, 41, 8, 36, 0, 17, 57, 24, 2, 46, 26, 61, 18, 0, 38, 12, 59, 6, 49, 3, 57, 19, 63, 5, 33, 18, 54, 28, 56, 0, 43, 26, 46, 63, 27, 56, 22, 27, 54, 38, 28, 63, 24, 10, 45, 0, 31, 42, 21, 12, 25, 44, 49, 59, 6, 26, 50, 3, 34, 27, 59, 0, 35, 62, 16, 4, 58, 47, 0, 43, 24, 37, 2, 54, 20, 46, 31, 0, 56, 34, 5, 55, 45, 60, 37, 0, 40, 10, 38, 63, 46, 15, 20, 0, 53, 21, 62, 30, 11, 24, 27, 40, 0, 57, 26, 3, 45, 27, 35 },
};
1997-11-25 06:05:25 +08:00
typedef struct _Color Color;
typedef struct _QuantizeObj QuantizeObj;
typedef void (* Pass1_Func) (QuantizeObj *);
typedef void (* Pass2i_Func) (QuantizeObj *);
1997-11-25 06:05:25 +08:00
typedef void (* Pass2_Func) (QuantizeObj *, Layer *, TileManager *);
typedef void (* Cleanup_Func) (QuantizeObj *);
typedef unsigned long ColorFreq;
typedef ColorFreq *Histogram;
struct _Color
{
int red;
int green;
int blue;
};
struct _QuantizeObj
{
Pass1_Func first_pass; /* first pass over image data creates colormap */
Pass2i_Func second_pass_init; /* Initialize data which persists over invocations */
Pass2_Func second_pass; /* second pass maps from image data to colormap */
Cleanup_Func delete_func; /* function to clean up data associated with private */
int desired_number_of_colors; /* Number of colors we will allow */
int actual_number_of_colors; /* Number of colors actually needed */
Color cmap[256]; /* colormap created by quantization */
unsigned long index_used_count[256]; /* how many times an index was used */
Histogram histogram; /* holds the histogram */
int want_alpha_dither;
int error_freedom; /* 0=much bleed, 1=controlled bleed */
1997-11-25 06:05:25 +08:00
};
typedef struct
{
/* The bounds of the box (inclusive); expressed as histogram indexes */
int Rmin, Rmax;
int Rhalferror;
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int Gmin, Gmax;
int Ghalferror;
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int Bmin, Bmax;
int Bhalferror;
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/* The volume (actually 2-norm) of the box */
int volume;
/* The number of nonzero histogram cells within this box */
long colorcount;
/* The sum of the weighted error within this box */
guint64 error;
/* The sum of the unweighted error within this box */
guint64 rerror;
guint64 gerror;
guint64 berror;
1997-11-25 06:05:25 +08:00
} box, *boxptr;
typedef struct
{
long ncolors;
long dither;
} Options;
typedef struct
{
GtkWidget* shell;
GtkWidget* custom_palette_button;
GimpImage* gimage;
PaletteSelect* palette_select;
int nodither_flag;
int fsdither_flag;
int fslowbleeddither_flag;
int fixeddither_flag;
int alphadither; /* flag */
int remdups; /* flag */
int num_cols;
int palette;
int makepal_flag;
int webpal_flag;
int custompal_flag;
int monopal_flag;
int reusepal_flag;
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} IndexedDialog;
static void indexed_ok_callback (GtkWidget *, gpointer);
static void indexed_cancel_callback (GtkWidget *, gpointer);
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static void indexed_custom_palette_button_callback (GtkWidget *widget, gpointer data);
static void indexed_palette_select_destroy_callback (GtkWidget *widget, gpointer data);
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static void rgb_converter (Layer *, TileManager *, int);
static void grayscale_converter (Layer *, TileManager *, int);
static void zero_histogram_gray (Histogram);
static void zero_histogram_rgb (Histogram);
static void generate_histogram_gray (Histogram, Layer *, int alpha_dither);
static void generate_histogram_rgb (Histogram, Layer *, int col_limit, int alpha_dither);
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static QuantizeObj* initialize_median_cut (int, int, ConvertDitherType,
ConvertPaletteType, int);
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static void
compute_color_rgb (QuantizeObj *quantobj,
Histogram histogram,
boxptr boxp,
int icolor);
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static unsigned char found_cols[MAXNUMCOLORS][3];
static int num_found_cols;
static gboolean needs_quantize;
static GtkWidget *build_palette_button (void);
static gboolean UserHasWebPal = FALSE;
1997-11-25 06:05:25 +08:00
1999-10-28 23:05:49 +08:00
PaletteEntries *theCustomPalette = NULL;
/* Defaults */
static int snum_cols = 256;
static gboolean sfsdither_flag = TRUE;
static gboolean sfslowbleeddither_flag = TRUE;
static gboolean snodither_flag = FALSE;
static gboolean sfixeddither_flag = FALSE;
static gboolean smakepal_flag = TRUE;
static gboolean salphadither_flag = FALSE;
static gboolean sremdups_flag = TRUE;
static gboolean swebpal_flag = FALSE;
static gboolean scustompal_flag = FALSE;
static gboolean smonopal_flag = FALSE;
static gboolean sreusepal_flag = FALSE;
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void
convert_to_rgb (GimpImage *gimage)
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{
convert_image (gimage, RGB, 0, 0, 0, 0, 0);
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gdisplays_flush ();
}
void
convert_to_grayscale (GimpImage* gimage)
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{
convert_image (gimage, GRAY, 0, 0, 0, 0, 0);
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gdisplays_flush ();
}
void
convert_to_indexed (GimpImage *gimage)
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{
IndexedDialog *dialog;
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GtkWidget *main_vbox;
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GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *label;
GtkObject *adjustment;
GtkWidget *spinbutton;
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GtkWidget *frame;
GtkWidget *custom_frame = NULL;
1997-11-25 06:05:25 +08:00
GtkWidget *toggle;
GSList *group = NULL;
app/Makefile.am app/gimphelp.[ch] new files 1999-09-27 Michael Natterer <mitch@gimp.org> * app/Makefile.am * app/gimphelp.[ch] * app/gimpui.[ch]: new files * app/interface.[ch] * app/preferences_dialog.[ch] The GIMP Help System part 1: Press "F1" in any dialog to pop up the help page for this dialog. Moved the widget constructors from preferences_dialog.[ch] and the query boxes from interface.[ch] to gimpui.[ch]. The dialog constructors take a help_func and a help_data parameter and install the "F1" accelerator which emits the new "help" signal. The "help" signal callback calls help_func(help_data) which finally has to call gimp_help() which in turn invokes the help browser. Still have to find a proper way to (1) prevent "F1" being assigned to some menu item and (2) to catch "F1" while browsing the menu trees in order to pop up the help for the selected item. * app/menus.c: a <Toolbox>/File/Help... menu item. * app/commands.[ch]: a command callback for the "Help..." menu item. * app/gimprc.[ch]: new boolean gimprc variable "use_help". * app/info_dialog.[ch]: pass a help function and data to the info dialog constructor. * app/tools.[ch]: store the tools help page names in the tool info structure. Export a special tools_help_func() which shows the help page for the active tool. * app/[all files calling a dialog constructor]: pass the dialog's help page to the constructor. Most dialogs are now created by gimp_dialog_new() which also sets up the action_area and the WM delete event callback, so I removed the resp. code from these files. Fixed some minor bugs and did some other stuff but didn't change any logic except dialog creation. * plug-ins/helpbrowser/helpbrowser.c: don't try to call a running help browser and don't install any menu path (all done in app/gimphelp.[ch] now).
1999-09-28 01:58:10 +08:00
dialog = g_new (IndexedDialog, 1);
dialog->gimage = gimage;
dialog->custom_palette_button = NULL;
dialog->palette_select = NULL;
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dialog->num_cols = snum_cols;
dialog->nodither_flag = snodither_flag;
dialog->fsdither_flag = sfsdither_flag;
dialog->fslowbleeddither_flag = sfslowbleeddither_flag;
1999-10-27 02:27:27 +08:00
dialog->fixeddither_flag = sfixeddither_flag;
dialog->alphadither = salphadither_flag;
dialog->remdups = sremdups_flag;
dialog->makepal_flag = smakepal_flag;
dialog->webpal_flag = swebpal_flag;
dialog->custompal_flag = scustompal_flag;
dialog->monopal_flag = smonopal_flag;
dialog->reusepal_flag = sreusepal_flag;
app/Makefile.am app/gimphelp.[ch] new files 1999-09-27 Michael Natterer <mitch@gimp.org> * app/Makefile.am * app/gimphelp.[ch] * app/gimpui.[ch]: new files * app/interface.[ch] * app/preferences_dialog.[ch] The GIMP Help System part 1: Press "F1" in any dialog to pop up the help page for this dialog. Moved the widget constructors from preferences_dialog.[ch] and the query boxes from interface.[ch] to gimpui.[ch]. The dialog constructors take a help_func and a help_data parameter and install the "F1" accelerator which emits the new "help" signal. The "help" signal callback calls help_func(help_data) which finally has to call gimp_help() which in turn invokes the help browser. Still have to find a proper way to (1) prevent "F1" being assigned to some menu item and (2) to catch "F1" while browsing the menu trees in order to pop up the help for the selected item. * app/menus.c: a <Toolbox>/File/Help... menu item. * app/commands.[ch]: a command callback for the "Help..." menu item. * app/gimprc.[ch]: new boolean gimprc variable "use_help". * app/info_dialog.[ch]: pass a help function and data to the info dialog constructor. * app/tools.[ch]: store the tools help page names in the tool info structure. Export a special tools_help_func() which shows the help page for the active tool. * app/[all files calling a dialog constructor]: pass the dialog's help page to the constructor. Most dialogs are now created by gimp_dialog_new() which also sets up the action_area and the WM delete event callback, so I removed the resp. code from these files. Fixed some minor bugs and did some other stuff but didn't change any logic except dialog creation. * plug-ins/helpbrowser/helpbrowser.c: don't try to call a running help browser and don't install any menu path (all done in app/gimphelp.[ch] now).
1999-09-28 01:58:10 +08:00
dialog->shell =
gimp_dialog_new (_("Indexed Color Conversion"), "indexed_color_conversion",
gimp_standard_help_func,
The GIMP Help System part II: press "F1" while browsing a menu to show the 1999-10-03 Michael Natterer <mitch@gimp.org> The GIMP Help System part II: press "F1" while browsing a menu to show the help page for the menu entry you're currently over with the mouse. * app/color_notebook.c: all color selectors have to register with a help page now. * app/color_select.[ch]: register with a help string. Removed the dialog part of the files because it's use was deprecated anyway (use color notebooks instead). * app/colormap_dialog.i.c * app/colormap_dialog.p.h * app/palette.c * app/palette_select.c: use a color notebook instead of a color selector. * app/gimphelp.c * app/gimpui.c: minor changes. * app/gimprc.c: "use help" defaults to TRUE now. * app/lc_dialog.c * app/lc_dialogP.h: a special help function which shows the help for the currently selected notebook page. * app/menus.c: some weird code which catches "key_press_event" in all menu shells and pops up the corresp. help page for the selected item. Embedded the GtkItemFactoryEntry in a new GimpItemFactoryEntry to allow a help path to be stored. Will be partially exported and moved to gimphelp.[ch] later to catch key_press for plug-in menu items (don't try this now ;-) * app/app_procs.c * app/brush_edit.c * app/brush_select.c * app/channel_ops.c * app/channels_dialog.c * app/commands.c * app/convert.c * app/devices.c * app/file_new_dialog.c * app/fileops.c * app/gdisplay.c * app/gdisplay_color.c * app/gdisplay_color_ui.c * app/gdisplay_ops.c * app/global_edit.c * app/gradient.c * app/gradient_select.c * app/interface.c * app/layers_dialog.c * app/module_db.c * app/paths_dialog.c * app/pattern_select.c * app/preferences_dialog.c * app/qmask.c * app/resize.c * app/undo_history.c: changed all dialog constructors to point to the right place in the new help file structure. * configure.in * help/*: the basic new help file structure. * modules/colorsel_gtk.c * modules/colorsel_triangle.c * modules/colorsel_water.c: register a help page. * plug-ins/helpbrowser/helpbrowser.c: load the help files according to the new help file structure.
1999-10-03 21:50:19 +08:00
"dialogs/convert_to_indexed.html",
app/Makefile.am app/gimphelp.[ch] new files 1999-09-27 Michael Natterer <mitch@gimp.org> * app/Makefile.am * app/gimphelp.[ch] * app/gimpui.[ch]: new files * app/interface.[ch] * app/preferences_dialog.[ch] The GIMP Help System part 1: Press "F1" in any dialog to pop up the help page for this dialog. Moved the widget constructors from preferences_dialog.[ch] and the query boxes from interface.[ch] to gimpui.[ch]. The dialog constructors take a help_func and a help_data parameter and install the "F1" accelerator which emits the new "help" signal. The "help" signal callback calls help_func(help_data) which finally has to call gimp_help() which in turn invokes the help browser. Still have to find a proper way to (1) prevent "F1" being assigned to some menu item and (2) to catch "F1" while browsing the menu trees in order to pop up the help for the selected item. * app/menus.c: a <Toolbox>/File/Help... menu item. * app/commands.[ch]: a command callback for the "Help..." menu item. * app/gimprc.[ch]: new boolean gimprc variable "use_help". * app/info_dialog.[ch]: pass a help function and data to the info dialog constructor. * app/tools.[ch]: store the tools help page names in the tool info structure. Export a special tools_help_func() which shows the help page for the active tool. * app/[all files calling a dialog constructor]: pass the dialog's help page to the constructor. Most dialogs are now created by gimp_dialog_new() which also sets up the action_area and the WM delete event callback, so I removed the resp. code from these files. Fixed some minor bugs and did some other stuff but didn't change any logic except dialog creation. * plug-ins/helpbrowser/helpbrowser.c: don't try to call a running help browser and don't install any menu path (all done in app/gimphelp.[ch] now).
1999-09-28 01:58:10 +08:00
GTK_WIN_POS_NONE,
1999-10-27 02:27:27 +08:00
FALSE, FALSE, TRUE,
app/Makefile.am app/gimphelp.[ch] new files 1999-09-27 Michael Natterer <mitch@gimp.org> * app/Makefile.am * app/gimphelp.[ch] * app/gimpui.[ch]: new files * app/interface.[ch] * app/preferences_dialog.[ch] The GIMP Help System part 1: Press "F1" in any dialog to pop up the help page for this dialog. Moved the widget constructors from preferences_dialog.[ch] and the query boxes from interface.[ch] to gimpui.[ch]. The dialog constructors take a help_func and a help_data parameter and install the "F1" accelerator which emits the new "help" signal. The "help" signal callback calls help_func(help_data) which finally has to call gimp_help() which in turn invokes the help browser. Still have to find a proper way to (1) prevent "F1" being assigned to some menu item and (2) to catch "F1" while browsing the menu trees in order to pop up the help for the selected item. * app/menus.c: a <Toolbox>/File/Help... menu item. * app/commands.[ch]: a command callback for the "Help..." menu item. * app/gimprc.[ch]: new boolean gimprc variable "use_help". * app/info_dialog.[ch]: pass a help function and data to the info dialog constructor. * app/tools.[ch]: store the tools help page names in the tool info structure. Export a special tools_help_func() which shows the help page for the active tool. * app/[all files calling a dialog constructor]: pass the dialog's help page to the constructor. Most dialogs are now created by gimp_dialog_new() which also sets up the action_area and the WM delete event callback, so I removed the resp. code from these files. Fixed some minor bugs and did some other stuff but didn't change any logic except dialog creation. * plug-ins/helpbrowser/helpbrowser.c: don't try to call a running help browser and don't install any menu path (all done in app/gimphelp.[ch] now).
1999-09-28 01:58:10 +08:00
_("OK"), indexed_ok_callback,
dialog, NULL, NULL, TRUE, FALSE,
app/Makefile.am app/gimphelp.[ch] new files 1999-09-27 Michael Natterer <mitch@gimp.org> * app/Makefile.am * app/gimphelp.[ch] * app/gimpui.[ch]: new files * app/interface.[ch] * app/preferences_dialog.[ch] The GIMP Help System part 1: Press "F1" in any dialog to pop up the help page for this dialog. Moved the widget constructors from preferences_dialog.[ch] and the query boxes from interface.[ch] to gimpui.[ch]. The dialog constructors take a help_func and a help_data parameter and install the "F1" accelerator which emits the new "help" signal. The "help" signal callback calls help_func(help_data) which finally has to call gimp_help() which in turn invokes the help browser. Still have to find a proper way to (1) prevent "F1" being assigned to some menu item and (2) to catch "F1" while browsing the menu trees in order to pop up the help for the selected item. * app/menus.c: a <Toolbox>/File/Help... menu item. * app/commands.[ch]: a command callback for the "Help..." menu item. * app/gimprc.[ch]: new boolean gimprc variable "use_help". * app/info_dialog.[ch]: pass a help function and data to the info dialog constructor. * app/tools.[ch]: store the tools help page names in the tool info structure. Export a special tools_help_func() which shows the help page for the active tool. * app/[all files calling a dialog constructor]: pass the dialog's help page to the constructor. Most dialogs are now created by gimp_dialog_new() which also sets up the action_area and the WM delete event callback, so I removed the resp. code from these files. Fixed some minor bugs and did some other stuff but didn't change any logic except dialog creation. * plug-ins/helpbrowser/helpbrowser.c: don't try to call a running help browser and don't install any menu path (all done in app/gimphelp.[ch] now).
1999-09-28 01:58:10 +08:00
_("Cancel"), indexed_cancel_callback,
dialog, NULL, NULL, FALSE, TRUE,
app/Makefile.am app/gimphelp.[ch] new files 1999-09-27 Michael Natterer <mitch@gimp.org> * app/Makefile.am * app/gimphelp.[ch] * app/gimpui.[ch]: new files * app/interface.[ch] * app/preferences_dialog.[ch] The GIMP Help System part 1: Press "F1" in any dialog to pop up the help page for this dialog. Moved the widget constructors from preferences_dialog.[ch] and the query boxes from interface.[ch] to gimpui.[ch]. The dialog constructors take a help_func and a help_data parameter and install the "F1" accelerator which emits the new "help" signal. The "help" signal callback calls help_func(help_data) which finally has to call gimp_help() which in turn invokes the help browser. Still have to find a proper way to (1) prevent "F1" being assigned to some menu item and (2) to catch "F1" while browsing the menu trees in order to pop up the help for the selected item. * app/menus.c: a <Toolbox>/File/Help... menu item. * app/commands.[ch]: a command callback for the "Help..." menu item. * app/gimprc.[ch]: new boolean gimprc variable "use_help". * app/info_dialog.[ch]: pass a help function and data to the info dialog constructor. * app/tools.[ch]: store the tools help page names in the tool info structure. Export a special tools_help_func() which shows the help page for the active tool. * app/[all files calling a dialog constructor]: pass the dialog's help page to the constructor. Most dialogs are now created by gimp_dialog_new() which also sets up the action_area and the WM delete event callback, so I removed the resp. code from these files. Fixed some minor bugs and did some other stuff but didn't change any logic except dialog creation. * plug-ins/helpbrowser/helpbrowser.c: don't try to call a running help browser and don't install any menu path (all done in app/gimphelp.[ch] now).
1999-09-28 01:58:10 +08:00
NULL);
1997-11-25 06:05:25 +08:00
1999-10-27 02:27:27 +08:00
main_vbox = gtk_vbox_new (FALSE, 2);
gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 4);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (dialog->shell)->vbox),
main_vbox);
gtk_widget_show (main_vbox);
frame = gtk_frame_new (_("General Palette Options"));
1999-10-27 02:27:27 +08:00
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
app/Makefile.am app/gimphelp.[ch] new files 1999-09-27 Michael Natterer <mitch@gimp.org> * app/Makefile.am * app/gimphelp.[ch] * app/gimpui.[ch]: new files * app/interface.[ch] * app/preferences_dialog.[ch] The GIMP Help System part 1: Press "F1" in any dialog to pop up the help page for this dialog. Moved the widget constructors from preferences_dialog.[ch] and the query boxes from interface.[ch] to gimpui.[ch]. The dialog constructors take a help_func and a help_data parameter and install the "F1" accelerator which emits the new "help" signal. The "help" signal callback calls help_func(help_data) which finally has to call gimp_help() which in turn invokes the help browser. Still have to find a proper way to (1) prevent "F1" being assigned to some menu item and (2) to catch "F1" while browsing the menu trees in order to pop up the help for the selected item. * app/menus.c: a <Toolbox>/File/Help... menu item. * app/commands.[ch]: a command callback for the "Help..." menu item. * app/gimprc.[ch]: new boolean gimprc variable "use_help". * app/info_dialog.[ch]: pass a help function and data to the info dialog constructor. * app/tools.[ch]: store the tools help page names in the tool info structure. Export a special tools_help_func() which shows the help page for the active tool. * app/[all files calling a dialog constructor]: pass the dialog's help page to the constructor. Most dialogs are now created by gimp_dialog_new() which also sets up the action_area and the WM delete event callback, so I removed the resp. code from these files. Fixed some minor bugs and did some other stuff but didn't change any logic except dialog creation. * plug-ins/helpbrowser/helpbrowser.c: don't try to call a running help browser and don't install any menu path (all done in app/gimphelp.[ch] now).
1999-09-28 01:58:10 +08:00
1997-11-25 06:05:25 +08:00
vbox = gtk_vbox_new (FALSE, 1);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
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gtk_container_add (GTK_CONTAINER (frame), vbox);
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gtk_widget_show (vbox);
1997-11-25 06:05:25 +08:00
/* 'generate palette' */
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hbox = gtk_hbox_new (FALSE, 4);
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gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle = gtk_radio_button_new_with_label (NULL, _("Generate Optimal Palette:"));
1997-11-25 06:05:25 +08:00
group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
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gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
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gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
GTK_SIGNAL_FUNC (gimp_toggle_button_update),
1997-11-25 06:05:25 +08:00
&(dialog->makepal_flag));
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gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->makepal_flag);
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gtk_widget_show (toggle);
if (dialog->num_cols == 256)
{
if ((!gimage_is_empty (gimage))
&&
(
gimage->layers->next
||
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layer_has_alpha ((Layer *) gimage->layers->data)
)
)
{
dialog->num_cols = 255;
}
}
spinbutton = gimp_spin_button_new (&adjustment, dialog->num_cols,
2, 256, 1, 5, 0, 1, 0);
gtk_signal_connect (GTK_OBJECT (adjustment), "value_changed",
GTK_SIGNAL_FUNC (gimp_int_adjustment_update),
&(dialog->num_cols));
1999-10-27 02:27:27 +08:00
gtk_box_pack_end (GTK_BOX (hbox), spinbutton, FALSE, FALSE, 0);
gtk_widget_show (spinbutton);
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label = gtk_label_new (_("# of Colors:"));
1999-10-27 02:27:27 +08:00
gtk_box_pack_end (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
gtk_widget_set_sensitive (GTK_WIDGET (spinbutton), dialog->num_cols);
gtk_widget_set_sensitive (GTK_WIDGET (label), dialog->num_cols);
gtk_object_set_data (GTK_OBJECT (toggle), "set_sensitive", spinbutton);
gtk_object_set_data (GTK_OBJECT (spinbutton), "set_sensitive", label);
1997-11-25 06:05:25 +08:00
gtk_widget_show (hbox);
/* 'custom' palette from dialog */
dialog->custom_palette_button = build_palette_button ();
if (dialog->custom_palette_button)
1997-11-25 06:05:25 +08:00
{
/* create the custom_frame here, it'll be added later */
custom_frame = gtk_frame_new (_("Custom Palette Options"));
gtk_container_set_border_width (GTK_CONTAINER (custom_frame), 2);
/* The remove-duplicates toggle */
hbox = gtk_hbox_new (FALSE, 1);
gtk_container_add (GTK_CONTAINER (custom_frame), hbox);
toggle = gtk_check_button_new_with_label (_("Remove Unused Colors from Final Palette"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), dialog->remdups);
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
GTK_SIGNAL_FUNC (gimp_toggle_button_update),
&(dialog->remdups));
gtk_widget_show (toggle);
gtk_widget_show (hbox);
/* 'custom' palette from dialog */
hbox = gtk_hbox_new (FALSE, 4);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle = gtk_radio_button_new_with_label (group, _("Use Custom Palette:"));
group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
GTK_SIGNAL_FUNC (gimp_toggle_button_update),
&(dialog->custompal_flag));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->custompal_flag);
gtk_object_set_data (GTK_OBJECT (toggle), "set_sensitive", custom_frame);
gtk_widget_show (toggle);
gtk_signal_connect (GTK_OBJECT (dialog->custom_palette_button), "clicked",
GTK_SIGNAL_FUNC (indexed_custom_palette_button_callback),
dialog);
gtk_box_pack_end (GTK_BOX (hbox), dialog->custom_palette_button, TRUE, TRUE, 0);
gtk_widget_show (dialog->custom_palette_button);
gtk_widget_show (hbox);
gtk_widget_set_sensitive (GTK_WIDGET (custom_frame), dialog->custompal_flag);
gtk_widget_set_sensitive (GTK_WIDGET (dialog->custom_palette_button), dialog->custompal_flag);
gtk_object_set_data (GTK_OBJECT (toggle), "set_sensitive", custom_frame);
gtk_object_set_data (GTK_OBJECT (custom_frame), "set_sensitive", dialog->custom_palette_button);
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}
if (!UserHasWebPal)
{
/* 'web palette'
* Only presented as an option to the user if they do not
* already have the 'Web' GIMP palette installed on their
* system.
*/
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hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle =
gtk_radio_button_new_with_label (group, _("Use WWW-Optimized Palette"));
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group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
GTK_SIGNAL_FUNC (gimp_toggle_button_update),
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&(dialog->webpal_flag));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->webpal_flag);
gtk_widget_show (toggle);
gtk_widget_show (hbox);
}
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/* 'mono palette' */
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hbox = gtk_hbox_new (FALSE, 0);
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gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle =
gtk_radio_button_new_with_label (group, _("Use Black/White (1-Bit) Palette"));
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group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
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gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
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gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
GTK_SIGNAL_FUNC (gimp_toggle_button_update),
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&(dialog->monopal_flag));
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gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->monopal_flag);
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gtk_widget_show (toggle);
gtk_widget_show (hbox);
frame = gtk_frame_new (_("Dither Options"));
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gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
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vbox = gtk_vbox_new (FALSE, 1);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show(vbox);
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/* The dither radio buttons */
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle = gtk_radio_button_new_with_label (NULL, _("No Color Dithering"));
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group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
GTK_SIGNAL_FUNC (gimp_toggle_button_update),
1999-10-27 02:27:27 +08:00
&(dialog->nodither_flag));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->nodither_flag);
gtk_widget_show (toggle);
gtk_widget_show (hbox);
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hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle = gtk_radio_button_new_with_label (group, _("Positioned Color Dithering"));
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group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
GTK_SIGNAL_FUNC (gimp_toggle_button_update),
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&(dialog->fixeddither_flag));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->fixeddither_flag);
gtk_widget_show (toggle);
gtk_widget_show (hbox);
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hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle = gtk_radio_button_new_with_label (group, _("Floyd-Steinberg Color Dithering (Reduced Color Bleeding)"));
1999-10-27 02:27:27 +08:00
group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
GTK_SIGNAL_FUNC (gimp_toggle_button_update),
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&(dialog->fslowbleeddither_flag));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->fslowbleeddither_flag);
gtk_widget_show (toggle);
gtk_widget_show (hbox);
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hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle = gtk_radio_button_new_with_label (group, _("Floyd-Steinberg Color Dithering (Normal)"));
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group = gtk_radio_button_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
GTK_SIGNAL_FUNC (gimp_toggle_button_update),
1999-10-27 02:27:27 +08:00
&(dialog->fsdither_flag));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->fsdither_flag);
gtk_widget_show (toggle);
gtk_widget_show (hbox);
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/* The alpha-dither toggle */
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
toggle = gtk_check_button_new_with_label (_("Enable Dithering of Transparency"));
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gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
dialog->alphadither);
gtk_box_pack_start (GTK_BOX (hbox), toggle, FALSE, FALSE, 0);
gtk_signal_connect (GTK_OBJECT (toggle), "toggled",
GTK_SIGNAL_FUNC (gimp_toggle_button_update),
&(dialog->alphadither));
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gtk_widget_show (toggle);
gtk_widget_show (hbox);
/* now add the custom_frame */
if (custom_frame)
{
gtk_box_pack_start (GTK_BOX (main_vbox), custom_frame, FALSE, FALSE, 0);
gtk_widget_show (custom_frame);
}
/* if the image isn't non-alpha/layered, set the default number of
colours to one less than max, to leave room for a transparent index
for transparent/animated GIFs */
if ((!gimage_is_empty (gimage))
&&
(
gimage->layers->next
||
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layer_has_alpha ((Layer *) gimage->layers->data)
)
)
{
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frame = gtk_frame_new (_("[ Warning ]"));
gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_vbox_new (FALSE, 1);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
label = gtk_label_new
(_("You are attempting to convert an image with alpha/layers "
"from RGB/GRAY to INDEXED.\nYou should not generate a "
"palette of more than 255 colors if you intend to create "
"a transparent or animated GIF file from this image."));
gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
gtk_container_add (GTK_CONTAINER (vbox), label);
gtk_widget_show (label);
}
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gtk_widget_show (dialog->shell);
}
static GtkWidget *
build_palette_button (void)
{
GSList *list;
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PaletteEntries *entries;
int i, default_palette;
UserHasWebPal = FALSE;
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if (!palette_entries_list)
{
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palette_init_palettes (FALSE);
}
list = palette_entries_list;
if (!list)
{
return NULL;
}
for (i = 0, list = palette_entries_list, default_palette = -1;
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list;
i++, list = g_slist_next (list))
{
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entries = (PaletteEntries *) list->data;
/* Preferentially, the initial default is 'Web' if available */
if (default_palette==-1 &&
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g_strcasecmp (entries->name, "Web")==0)
{
theCustomPalette = entries;
UserHasWebPal = TRUE;
}
/* We can't dither to > 256 colors */
if (entries->n_colors <= 256)
{
if (theCustomPalette == entries)
{
default_palette = i;
}
}
}
/* default to first one with <= 256 colors (only used if 'web' palette not avail.) */
if (default_palette == -1)
{
for (i = 0, list = palette_entries_list;
list && default_palette == -1;
i++, list = g_slist_next (list))
{
entries = (PaletteEntries *) list->data;
if (entries->n_colors <= 256)
{
theCustomPalette = entries;
default_palette = i;
}
}
}
if (default_palette == -1)
return NULL;
else
return gtk_button_new_with_label (theCustomPalette->name);
}
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static void
indexed_ok_callback (GtkWidget *widget,
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gpointer data)
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{
IndexedDialog *dialog;
ConvertPaletteType palette_type;
ConvertDitherType dither_type;
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dialog = (IndexedDialog *) data;
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if (dialog->webpal_flag) palette_type = WEB_PALETTE;
else
if (dialog->custompal_flag) palette_type = CUSTOM_PALETTE;
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else
if (dialog->monopal_flag) palette_type = MONO_PALETTE;
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else
if (dialog->makepal_flag) palette_type = MAKE_PALETTE;
else
palette_type = REUSE_PALETTE;
if (dialog->nodither_flag) dither_type = NO_DITHER;
else
if (dialog->fsdither_flag) dither_type = FS_DITHER;
else
if (dialog->fslowbleeddither_flag) dither_type = FSLOWBLEED_DITHER;
else
dither_type = FIXED_DITHER;
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/* Convert the image to indexed color */
convert_image (dialog->gimage, INDEXED, dialog->num_cols,
dither_type, dialog->alphadither,
dialog->remdups, palette_type);
gdisplays_flush ();
/* Save defaults for next time */
snum_cols = dialog->num_cols;
snodither_flag = dialog->nodither_flag;
sfsdither_flag = dialog->fsdither_flag;
sfslowbleeddither_flag = dialog->fslowbleeddither_flag;
sfixeddither_flag = dialog->fixeddither_flag;
salphadither_flag = dialog->alphadither;
sremdups_flag = dialog->remdups;
smakepal_flag = dialog->makepal_flag;
swebpal_flag = dialog->webpal_flag;
scustompal_flag = dialog->custompal_flag;
smonopal_flag = dialog->monopal_flag;
sreusepal_flag = dialog->reusepal_flag;
if (dialog->palette_select)
gtk_widget_destroy (dialog->palette_select->shell);
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gtk_widget_destroy (dialog->shell);
g_free (dialog);
dialog = NULL;
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}
static void
indexed_cancel_callback (GtkWidget *widget,
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gpointer data)
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{
IndexedDialog *dialog;
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dialog = (IndexedDialog *) data;
if (dialog->palette_select)
gtk_widget_destroy (dialog->palette_select->shell);
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gtk_widget_destroy (dialog->shell);
g_free (dialog);
dialog = NULL;
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}
static void
indexed_palette_select_destroy_callback (GtkWidget *widget,
gpointer data)
{
IndexedDialog *dialog = (IndexedDialog *)data;
if (dialog)
dialog->palette_select = NULL;
}
static gint
indexed_palette_select_row_callback (GtkCList *clist,
gint row,
gint column,
GdkEventButton *event,
gpointer data)
{
IndexedDialog *dialog = (IndexedDialog *)data;
PaletteEntries *p_entries;
p_entries = (PaletteEntries *) gtk_clist_get_row_data (clist, row);
if (p_entries)
{
if (p_entries->n_colors <= 256)
{
theCustomPalette = p_entries;
gtk_label_set_text (GTK_LABEL (GTK_BIN(dialog->custom_palette_button)->child),
theCustomPalette->name);
}
else
{
gtk_clist_unselect_row (clist, row, column);
}
}
return FALSE;
}
static void
indexed_custom_palette_button_callback (GtkWidget *widget,
gpointer data)
{
IndexedDialog *dialog = (IndexedDialog *)data;
if (dialog->palette_select == NULL)
{
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dialog->palette_select = palette_select_new (_("Select Custom Palette"),
theCustomPalette->name);
gtk_signal_connect (GTK_OBJECT (dialog->palette_select->shell), "destroy",
GTK_SIGNAL_FUNC (indexed_palette_select_destroy_callback),
dialog);
gtk_signal_connect (GTK_OBJECT (dialog->palette_select->clist), "select_row",
GTK_SIGNAL_FUNC (indexed_palette_select_row_callback),
dialog);
}
else
{
gdk_window_raise (dialog->palette_select->shell->window);
}
}
/**********************************************************/
typedef struct
{
signed long used_count;
unsigned char initial_index;
} palentryStruct;
static int
mapping_compare (const void *a, const void *b)
{
palentryStruct *m1 = (palentryStruct*)a;
palentryStruct *m2 = (palentryStruct*)b;
return (m2->used_count - m1->used_count);
}
/* FWIW, the make_remap_table() and mapping_compare() function source
and palentryStruct may be re-used under the XFree86-style license.
<adam@gimp.org> */
static void
make_remap_table (const unsigned char old_palette[],
unsigned char new_palette[],
const unsigned long index_used_count[],
unsigned char remap_table[],
int* num_entries)
{
int i,j,k;
unsigned char temppal[256 * 3];
unsigned long tempuse[256];
unsigned long transmap[256];
palentryStruct *palentries;
int used = 0;
memset(temppal, 0, 256 * 3);
memset(tempuse, 0, 256 * sizeof(unsigned long));
memset(transmap, 255, 256 * sizeof(unsigned long));
/* First pass - only collect entries which are marked as
being used at all in index_used_count. */
for (i = 0; i < *num_entries; i++)
{
if (index_used_count[i])
{
temppal[used*3 + 0] = old_palette[i*3 + 0];
temppal[used*3 + 1] = old_palette[i*3 + 1];
temppal[used*3 + 2] = old_palette[i*3 + 2];
tempuse[used] = index_used_count[i];
transmap[i] = used;
used++;
}
}
/* Second pass - remove duplicates. (O(n^3), could do better!) */
for (i = 0; i < used; i++)
{
for (j = 0; j < i; j++)
{
if ((temppal[i*3 + 1] == temppal[j*3 + 1]) &&
(temppal[i*3 + 0] == temppal[j*3 + 0]) &&
(temppal[i*3 + 2] == temppal[j*3 + 2]) &&
tempuse[j] &&
tempuse[i])
{
/* Move the 'used' tally from one to the other. */
tempuse[i] += tempuse[j];
/* zero one of them, deactivating its entry. */
tempuse[j] = 0;
/* change all mappings from this dead index
to the live one. */
for (k = 0; k < *num_entries; k++)
{
if (index_used_count[k] && (transmap[k] == j))
transmap[k] = i;
}
}
}
}
/* Third pass - rank all used indicies to the beginning of the
palette. */
palentries = g_malloc(used * sizeof(palentryStruct));
for (i = 0; i < used; i++)
{
palentries[i].initial_index = i;
palentries[i].used_count = tempuse[i];
}
qsort(palentries, used, sizeof(palentryStruct),
&mapping_compare);
for (i = 0; i < *num_entries; i++)
{
if (index_used_count[i])
{
for (j = 0; j < used; j++)
{
if ((transmap[i] == palentries[j].initial_index)
&& (palentries[j].used_count))
{
remap_table[i] = j;
break;
}
}
}
}
for (i = 0; i < *num_entries; i++)
{
if (index_used_count[i])
{
new_palette[remap_table[i]*3 + 0] = old_palette[i*3 + 0];
new_palette[remap_table[i]*3 + 1] = old_palette[i*3 + 1];
new_palette[remap_table[i]*3 + 2] = old_palette[i*3 + 2];
}
}
*num_entries = 0;
for (j = 0; j < used; j++)
{
if (palentries[j].used_count)
{
(*num_entries)++;
}
}
g_free (palentries);
}
static void
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remap_indexed_layer (Layer *layer,
unsigned char *remap_table,
int num_entries)
{
PixelRegion srcPR, destPR;
void* pr;
int has_alpha;
int pixels;
unsigned char* src;
unsigned char* dest;
has_alpha = layer_has_alpha (layer) ? 1 : 0;
pixel_region_init (&srcPR,
GIMP_DRAWABLE(layer)->tiles, 0, 0,
GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height,
FALSE);
pixel_region_init (&destPR,
GIMP_DRAWABLE(layer)->tiles, 0, 0,
GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height,
TRUE);
for (pr = pixel_regions_register (2, &srcPR, &destPR);
pr != NULL;
pr = pixel_regions_process (pr))
{
src = srcPR.data;
dest = destPR.data;
pixels = srcPR.h * srcPR.w;
while (pixels--)
{
if ((!has_alpha) || (has_alpha && src[ALPHA_I_PIX]))
{
dest[INDEXED_PIX] = remap_table[src[INDEXED_PIX]];
}
src += srcPR.bytes;
dest += destPR.bytes;
}
}
}
void
convert_image (GImage *gimage,
GimpImageBaseType new_type,
/* The following three params used only for
* new_type == INDEXED
*/
int num_cols,
ConvertDitherType dither,
int alpha_dither,
int remdups,
ConvertPaletteType palette_type)
1997-11-25 06:05:25 +08:00
{
QuantizeObj *quantobj;
Layer *layer;
Layer *floating_layer;
GimpImageBaseType old_type;
GSList *list;
GimpImageType new_layer_type;
1997-11-25 06:05:25 +08:00
int new_layer_bytes;
int has_alpha;
TileManager *new_tiles;
quantobj = NULL;
new_layer_type = RGBA_GIMAGE;
new_layer_bytes = 4;
gimp_add_busy_cursors();
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/* Get the floating layer if one exists */
floating_layer = gimage_floating_sel (gimage);
undo_push_group_start (gimage, GIMAGE_MOD_UNDO);
/* Relax the floating selection */
if (floating_layer)
floating_sel_relax (floating_layer, TRUE);
/* Push the image size to the stack */
undo_push_gimage_mod (gimage);
/* Set the new base type */
old_type = gimage->base_type;
gimage->base_type = new_type;
/* Convert to indexed? Build histogram if necessary. */
if (new_type == INDEXED)
{
int i;
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/* don't dither if the input is grayscale and we are simply mapping every color */
if (old_type == GRAY && num_cols == 256 && palette_type == MAKE_PALETTE)
dither = NO_DITHER;
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quantobj = initialize_median_cut (old_type, num_cols, dither,
palette_type, alpha_dither);
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if (palette_type == MAKE_PALETTE)
{
if (old_type == GRAY)
zero_histogram_gray (quantobj->histogram);
else
zero_histogram_rgb (quantobj->histogram);
/* To begin, assume that there are fewer colours in
* the image than the user actually asked for. In that
* case, we don't need to quantize or colour-dither.
1997-11-25 06:05:25 +08:00
*/
needs_quantize = FALSE;
num_found_cols = 0;
/* Build the histogram */
list = gimage->layers;
while (list)
{
layer = (Layer *) list->data;
list = g_slist_next (list);
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if (old_type == GRAY)
generate_histogram_gray (quantobj->histogram, layer, alpha_dither);
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else
generate_histogram_rgb (quantobj->histogram, layer, num_cols, alpha_dither);
/*
* Note: generate_histogram_rgb may set needs_quantize if
* the image contains more colours than the limit specified
* by the user.
*/
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}
}
if (
(old_type == RGB) &&
(!needs_quantize) &&
(palette_type == MAKE_PALETTE)
)
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{
/* If this is an RGB image, and the user wanted a custom-built
* generated palette, and this image has no more colours than
* the user asked for, we don't need the first pass (quantization).
*
* There's also no point in dithering, since there's no error to
* spread. So we destroy the old quantobj and make a new one
* with the remapping function set to a special LUT-based
* no-dither remapper.
*/
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quantobj->delete_func (quantobj);
quantobj = initialize_median_cut (old_type, num_cols,
NODESTRUCT_DITHER, palette_type,
alpha_dither);
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/* We can skip the first pass (palette creation) */
quantobj->actual_number_of_colors = num_found_cols;
for (i = 0; i < num_found_cols; i++)
{
quantobj->cmap[i].red = found_cols[i][0];
quantobj->cmap[i].green = found_cols[i][1];
quantobj->cmap[i].blue = found_cols[i][2];
}
}
else
{
(* quantobj->first_pass) (quantobj);
}
}
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/* Initialise data which must persist across indexed layer iterations */
switch (new_type)
{
case INDEXED:
if (quantobj->second_pass_init)
(* quantobj->second_pass_init) (quantobj);
break;
default:
break;
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}
/* Convert all layers */
list = gimage->layers;
while (list)
{
layer = (Layer *) list->data;
list = g_slist_next (list);
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has_alpha = layer_has_alpha (layer);
switch (new_type)
{
case RGB:
new_layer_type = (has_alpha) ? RGBA_GIMAGE : RGB_GIMAGE;
new_layer_bytes = (has_alpha) ? 4 : 3;
break;
case GRAY:
new_layer_type = (has_alpha) ? GRAYA_GIMAGE : GRAY_GIMAGE;
new_layer_bytes = (has_alpha) ? 2 : 1;
break;
case INDEXED:
new_layer_type = (has_alpha) ? INDEXEDA_GIMAGE : INDEXED_GIMAGE;
new_layer_bytes = (has_alpha) ? 2 : 1;
break;
default:
break;
}
new_tiles = tile_manager_new (GIMP_DRAWABLE(layer)->width,
GIMP_DRAWABLE(layer)->height,
new_layer_bytes);
1997-11-25 06:05:25 +08:00
switch (new_type)
{
case RGB:
rgb_converter (layer, new_tiles, old_type);
break;
case GRAY:
grayscale_converter (layer, new_tiles, old_type);
break;
case INDEXED:
(* quantobj->second_pass) (quantobj, layer, new_tiles);
break;
default:
break;
}
/* Push the layer on the undo stack */
undo_push_layer_mod (gimage, layer);
GIMP_DRAWABLE(layer)->tiles = new_tiles;
GIMP_DRAWABLE(layer)->bytes = new_layer_bytes;
GIMP_DRAWABLE(layer)->type = new_layer_type;
GIMP_DRAWABLE(layer)->has_alpha = TYPE_HAS_ALPHA(new_layer_type);
1997-11-25 06:05:25 +08:00
}
/* colourmap stuff */
if (new_type == INDEXED)
{
if (gimage->cmap)
g_free (gimage->cmap);
gimage->cmap = (unsigned char *) g_malloc (COLORMAP_SIZE);
if (remdups &&
((palette_type == WEB_PALETTE) || (palette_type == CUSTOM_PALETTE)))
{
int i,j;
unsigned char old_palette [256 * 3];
unsigned char new_palette [256 * 3];
unsigned char remap_table [256];
int num_entries;
for (i = 0, j = 0; i < quantobj->actual_number_of_colors; i++)
{
old_palette[j++] = quantobj->cmap[i].red;
old_palette[j++] = quantobj->cmap[i].green;
old_palette[j++] = quantobj->cmap[i].blue;
}
num_entries = quantobj->actual_number_of_colors;
#if 1
/* Generate a remapping table */
make_remap_table (old_palette, new_palette,
quantobj->index_used_count, remap_table, &num_entries);
/* Convert all layers */
list = gimage->layers;
while (list)
{
layer = (Layer *) list->data;
list = g_slist_next (list);
remap_indexed_layer (layer, remap_table, num_entries);
}
#else
memcpy(new_palette, old_palette, 256*3);
#endif
for (i = 0, j = 0; i < num_entries; i++)
{
gimage->cmap[j] = new_palette[j]; j++;
gimage->cmap[j] = new_palette[j]; j++;
gimage->cmap[j] = new_palette[j]; j++;
}
gimage->num_cols = num_entries;
}
else
{
int i,j;
for (i = 0, j = 0; i < quantobj->actual_number_of_colors; i++)
{
gimage->cmap[j++] = quantobj->cmap[i].red;
gimage->cmap[j++] = quantobj->cmap[i].green;
gimage->cmap[j++] = quantobj->cmap[i].blue;
}
gimage->num_cols = quantobj->actual_number_of_colors;
}
}
/* Delete the quantizer object, if there is one */
if (quantobj)
quantobj->delete_func (quantobj);
1997-11-25 06:05:25 +08:00
/* Make sure the projection is up to date */
gimage_projection_realloc (gimage);
/* Rigor the floating selection */
if (floating_layer)
floating_sel_rigor (floating_layer, TRUE);
undo_push_group_end (gimage);
/* shrink wrap and update all views */
layer_invalidate_previews (gimage);
1997-11-25 06:05:25 +08:00
gimage_invalidate_preview (gimage);
gdisplays_update_title (gimage);
gdisplays_update_full (gimage);
1997-11-25 06:05:25 +08:00
gimp_image_colormap_changed (gimage, -1);
gimp_remove_busy_cursors(NULL);
1997-11-25 06:05:25 +08:00
}
static void
rgb_converter (Layer *layer,
TileManager *new_tiles,
int old_type)
{
PixelRegion srcPR, destPR;
int row, col;
int offset;
int has_alpha;
unsigned char *src, *s;
unsigned char *dest, *d;
unsigned char *cmap;
void *pr;
has_alpha = layer_has_alpha (layer);
pixel_region_init (&srcPR, GIMP_DRAWABLE(layer)->tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, FALSE);
pixel_region_init (&destPR, new_tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, TRUE);
1997-11-25 06:05:25 +08:00
for (pr = pixel_regions_register (2, &srcPR, &destPR); pr != NULL; pr = pixel_regions_process (pr))
{
src = srcPR.data;
dest = destPR.data;
switch (old_type)
{
case GRAY:
for (row = 0; row < srcPR.h; row++)
{
s = src;
d = dest;
for (col = 0; col < srcPR.w; col++)
{
d[RED_PIX] = *s;
d[GREEN_PIX] = *s;
d[BLUE_PIX] = *s;
d += 3;
s++;
if (has_alpha)
*d++ = *s++;
}
src += srcPR.rowstride;
dest += destPR.rowstride;
}
break;
case INDEXED:
cmap = drawable_cmap (GIMP_DRAWABLE(layer));
1997-11-25 06:05:25 +08:00
for (row = 0; row < srcPR.h; row++)
{
s = src;
d = dest;
for (col = 0; col < srcPR.w; col++)
{
offset = *s++ * 3;
d[RED_PIX] = cmap[offset + 0];
d[GREEN_PIX] = cmap[offset + 1];
d[BLUE_PIX] = cmap[offset + 2];
d += 3;
if (has_alpha)
*d++ = *s++;
}
src += srcPR.rowstride;
dest += destPR.rowstride;
}
break;
default:
break;
}
}
}
static void
grayscale_converter (Layer *layer,
TileManager *new_tiles,
int old_type)
{
PixelRegion srcPR, destPR;
int row, col;
int offset, val;
int has_alpha;
unsigned char *src, *s;
unsigned char *dest, *d;
unsigned char *cmap;
void *pr;
has_alpha = layer_has_alpha (layer);
pixel_region_init (&srcPR, GIMP_DRAWABLE(layer)->tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, FALSE);
pixel_region_init (&destPR, new_tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, TRUE);
1997-11-25 06:05:25 +08:00
for (pr = pixel_regions_register (2, &srcPR, &destPR); pr != NULL; pr = pixel_regions_process (pr))
{
src = srcPR.data;
dest = destPR.data;
switch (old_type)
{
case RGB:
for (row = 0; row < srcPR.h; row++)
{
s = src;
d = dest;
for (col = 0; col < srcPR.w; col++)
{
val = INTENSITY (s[RED_PIX], s[GREEN_PIX], s[BLUE_PIX]);
*d++ = (unsigned char) val;
s += 3;
if (has_alpha)
*d++ = *s++;
}
src += srcPR.rowstride;
dest += destPR.rowstride;
}
break;
case INDEXED:
cmap = drawable_cmap (GIMP_DRAWABLE(layer));
1997-11-25 06:05:25 +08:00
for (row = 0; row < srcPR.h; row++)
{
s = src;
d = dest;
for (col = 0; col < srcPR.w; col++)
{
offset = *s++ * 3;
val = INTENSITY (cmap[offset+0], cmap[offset+1], cmap[offset+2]);
*d++ = (unsigned char) val;
if (has_alpha)
*d++ = *s++;
}
src += srcPR.rowstride;
dest += destPR.rowstride;
}
break;
default:
break;
}
}
}
/*
* Indexed color conversion machinery
*/
static void
zero_histogram_gray (Histogram histogram)
{
int i;
for (i = 0; i < 256; i++)
histogram[i] = 0;
}
static void
zero_histogram_rgb (Histogram histogram)
{
int r, g, b;
for (r = 0; r < HIST_R_ELEMS; r++)
for (g = 0; g < HIST_G_ELEMS; g++)
for (b = 0; b < HIST_B_ELEMS; b++)
histogram[r*MR + g*MG + b] = 0;
}
static void
generate_histogram_gray (Histogram histogram,
Layer *layer,
int alpha_dither)
1997-11-25 06:05:25 +08:00
{
PixelRegion srcPR;
unsigned char *data;
int size;
void *pr;
gboolean has_alpha;
has_alpha = (gboolean) layer_has_alpha(layer);
pixel_region_init (&srcPR, GIMP_DRAWABLE(layer)->tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, FALSE);
1997-11-25 06:05:25 +08:00
for (pr = pixel_regions_register (1, &srcPR);
pr != NULL;
pr = pixel_regions_process (pr))
{
data = srcPR.data;
size = srcPR.w * srcPR.h;
while (size--)
{
histogram[*data] ++;
data += srcPR.bytes;
}
}
}
static void
generate_histogram_rgb (Histogram histogram,
Layer *layer,
int col_limit,
int alpha_dither)
1997-11-25 06:05:25 +08:00
{
PixelRegion srcPR;
unsigned char *data;
int size;
void *pr;
ColorFreq *colfreq;
1997-11-25 06:05:25 +08:00
gboolean has_alpha;
int nfc_iter;
int row, col, coledge;
int offsetx, offsety;
1997-11-25 06:05:25 +08:00
has_alpha = (gboolean) layer_has_alpha(layer);
drawable_offsets (GIMP_DRAWABLE(layer), &offsetx, &offsety);
/* g_print ("col_limit = %d, nfc = %d\n", col_limit, num_found_cols);*/
1997-11-25 06:05:25 +08:00
pixel_region_init (&srcPR, GIMP_DRAWABLE(layer)->tiles, 0, 0,
GIMP_DRAWABLE(layer)->width,
GIMP_DRAWABLE(layer)->height,
FALSE);
1997-11-25 06:05:25 +08:00
for (pr = pixel_regions_register (1, &srcPR);
pr != NULL;
pr = pixel_regions_process (pr))
{
data = srcPR.data;
size = srcPR.w * srcPR.h;
/*fprintf(stderr, " [%d,%d - %d,%d]", srcPR.x, srcPR.y, offsetx, offsety);*/
1997-11-25 06:05:25 +08:00
if (needs_quantize)
{
if (alpha_dither)
{
/* if alpha-dithering, we need to be deterministic w.r.t. offsets */
col = srcPR.x + offsetx;
coledge = col + srcPR.w;
row = srcPR.y + offsety;
while (size--)
{
if (
(
has_alpha && (
(data[ALPHA_PIX] << 6) >
(255 * DM[col&DM_WIDTHMASK][row&DM_HEIGHTMASK])
)
)
|| (!has_alpha))
{
colfreq = & histogram[(data[RED_PIX] >> R_SHIFT) * MR +
(data[GREEN_PIX] >> G_SHIFT) * MG +
(data[BLUE_PIX] >> B_SHIFT)];
(*colfreq)++;
}
col++;
if (col == coledge)
{
col = srcPR.x + offsetx;
row++;
}
data += srcPR.bytes;
}
}
else
1997-11-25 06:05:25 +08:00
{
while (size--)
1997-11-25 06:05:25 +08:00
{
if (
(
has_alpha && (
(data[ALPHA_PIX] > 127)
)
)
|| (!has_alpha))
{
colfreq = & histogram[(data[RED_PIX] >> R_SHIFT) * MR +
(data[GREEN_PIX] >> G_SHIFT) * MG +
(data[BLUE_PIX] >> B_SHIFT)];
(*colfreq)++;
}
data += srcPR.bytes;
1997-11-25 06:05:25 +08:00
}
}
}
else
{
/* if alpha-dithering, we need to be deterministic w.r.t. offsets */
col = srcPR.x + offsetx;
coledge = col + srcPR.w;
row = srcPR.y + offsety;
1997-11-25 06:05:25 +08:00
while (size--)
{
if ((has_alpha && (alpha_dither ?
((data[ALPHA_PIX] << 6) > (255 * DM[col&DM_WIDTHMASK][row&DM_HEIGHTMASK])) :
(data[ALPHA_PIX] > 127))) || (!has_alpha))
1997-11-25 06:05:25 +08:00
{
colfreq = & histogram[(data[RED_PIX] >> R_SHIFT) * MR +
(data[GREEN_PIX] >> G_SHIFT) * MG +
(data[BLUE_PIX] >> B_SHIFT)];
(*colfreq)++;
1997-11-25 06:05:25 +08:00
if (!needs_quantize)
{
for (nfc_iter = 0;
nfc_iter < num_found_cols;
nfc_iter++)
{
if (
(data[RED_PIX] == found_cols[nfc_iter][0])
&&
(data[GREEN_PIX] == found_cols[nfc_iter][1])
&&
(data[BLUE_PIX] == found_cols[nfc_iter][2])
)
goto already_found;
}
/* Colour was not in the table of
* existing colours
*/
num_found_cols++;
if (num_found_cols > col_limit)
1997-11-25 06:05:25 +08:00
{
/* There are more colours in the image
* than were allowed. We switch to plain
* histogram calculation with a view to
* quantizing at a later stage.
*/
needs_quantize = TRUE;
/* g_print (_("\nmax colours exceeded - needs quantize.\n"));*/
1997-11-25 06:05:25 +08:00
goto already_found;
}
else
{
/* Remember the new colour we just found.
*/
found_cols[num_found_cols-1][0] = data[RED_PIX];
found_cols[num_found_cols-1][1] = data[GREEN_PIX];
found_cols[num_found_cols-1][2] = data[BLUE_PIX];
}
1997-11-25 06:05:25 +08:00
}
}
already_found:
col++;
if (col == coledge)
{
col = srcPR.x + offsetx;
row++;
}
1997-11-25 06:05:25 +08:00
data += srcPR.bytes;
}
}
}
/* g_print ("O: col_limit = %d, nfc = %d\n", col_limit, num_found_cols);*/
1997-11-25 06:05:25 +08:00
}
static boxptr
find_split_candidate (boxptr boxlist,
int numboxes)
1997-11-25 06:05:25 +08:00
{
boxptr boxp;
int i;
guint64 maxc = 0;
1997-11-25 06:05:25 +08:00
boxptr which = NULL;
for (i = 0, boxp = boxlist; i < numboxes; i++, boxp++)
{
if (boxp->volume > 0)
1997-11-25 06:05:25 +08:00
{
if (boxp->gerror*G_SCALE > maxc)
{
which = boxp;
maxc = boxp->gerror*G_SCALE;
}
if (boxp->rerror*R_SCALE > maxc)
{
which = boxp;
maxc = boxp->rerror*R_SCALE;
}
if (boxp->berror*B_SCALE > maxc)
{
which = boxp;
maxc = boxp->berror*B_SCALE;
}
1997-11-25 06:05:25 +08:00
}
}
return which;
}
#if 0
static boxptr
find_biggest_color_pop (boxptr boxlist,
int numboxes)
/* Find the splittable box with the largest color population */
/* Returns NULL if no splittable boxes remain */
{
}
#endif
1997-11-25 06:05:25 +08:00
static boxptr
find_biggest_volume (boxptr boxlist,
int numboxes)
/* Find the splittable box with the largest (scaled) volume */
/* Returns NULL if no splittable boxes remain */
{
boxptr boxp;
int i;
int maxv = 0;
boxptr which = NULL;
for (i = 0, boxp = boxlist; i < numboxes; i++, boxp++)
{
if (boxp->volume > maxv)
{
which = boxp;
maxv = boxp->volume;
}
}
return which;
}
static void
update_box_gray (Histogram histogram,
boxptr boxp)
/* Shrink the min/max bounds of a box to enclose only nonzero elements, */
/* and recompute its volume and population */
{
int i, min, max, dist;
long ccount;
min = boxp->Rmin;
max = boxp->Rmax;
if (max > min)
for (i = min; i <= max; i++)
{
if (histogram[i] != 0)
{
boxp->Rmin = min = i;
break;
}
}
if (max > min)
for (i = max; i >= min; i--)
{
if (histogram[i] != 0)
{
boxp->Rmax = max = i;
break;
}
}
/* Update box volume.
* We use 2-norm rather than real volume here; this biases the method
* against making long narrow boxes, and it has the side benefit that
* a box is splittable iff norm > 0.
* Since the differences are expressed in histogram-cell units,
* we have to shift back to JSAMPLE units to get consistent distances;
* after which, we scale according to the selected distance scale factors.
*/
dist = max - min;
boxp->volume = dist * dist;
/* Now scan remaining volume of box and compute population */
ccount = 0;
for (i = min; i <= max; i++)
if (histogram[i] != 0)
ccount++;
boxp->colorcount = ccount;
}
static void
update_box_rgb (Histogram histogram,
boxptr boxp)
/* Shrink the min/max bounds of a box to enclose only nonzero elements, */
/* and recompute its volume, population and error */
1997-11-25 06:05:25 +08:00
{
ColorFreq * histp;
int R,G,B;
int Rmin,Rmax,Gmin,Gmax,Bmin,Bmax;
int dist0,dist1,dist2;
long ccount;
guint64 tempRerror;
guint64 tempGerror;
guint64 tempBerror;
QuantizeObj dummyqo;
box dummybox;
1997-11-25 06:05:25 +08:00
Rmin = boxp->Rmin; Rmax = boxp->Rmax;
Gmin = boxp->Gmin; Gmax = boxp->Gmax;
Bmin = boxp->Bmin; Bmax = boxp->Bmax;
if (Rmax > Rmin)
for (R = Rmin; R <= Rmax; R++)
for (G = Gmin; G <= Gmax; G++)
{
histp = histogram + R*MR + G*MG + Bmin;
for (B = Bmin; B <= Bmax; B++)
if (*histp++ != 0)
{
boxp->Rmin = Rmin = R;
goto have_Rmin;
}
}
have_Rmin:
if (Rmax > Rmin)
for (R = Rmax; R >= Rmin; R--)
for (G = Gmin; G <= Gmax; G++)
{
histp = histogram + R*MR + G*MG + Bmin;
for (B = Bmin; B <= Bmax; B++)
if (*histp++ != 0)
{
boxp->Rmax = Rmax = R;
goto have_Rmax;
}
}
have_Rmax:
if (Gmax > Gmin)
for (G = Gmin; G <= Gmax; G++)
for (R = Rmin; R <= Rmax; R++)
{
histp = histogram + R*MR + G*MG + Bmin;
for (B = Bmin; B <= Bmax; B++)
if (*histp++ != 0)
{
boxp->Gmin = Gmin = G;
goto have_Gmin;
}
}
have_Gmin:
if (Gmax > Gmin)
for (G = Gmax; G >= Gmin; G--)
for (R = Rmin; R <= Rmax; R++)
{
histp = histogram + R*MR + G*MG + Bmin;
for (B = Bmin; B <= Bmax; B++)
if (*histp++ != 0)
{
boxp->Gmax = Gmax = G;
goto have_Gmax;
}
}
have_Gmax:
if (Bmax > Bmin)
for (B = Bmin; B <= Bmax; B++)
for (R = Rmin; R <= Rmax; R++)
{
histp = histogram + R*MR + Gmin*MG + B;
for (G = Gmin; G <= Gmax; G++, histp += MG)
if (*histp != 0)
{
boxp->Bmin = Bmin = B;
goto have_Bmin;
}
}
have_Bmin:
if (Bmax > Bmin)
for (B = Bmax; B >= Bmin; B--)
for (R = Rmin; R <= Rmax; R++)
{
histp = histogram + R*MR + Gmin*MG + B;
for (G = Gmin; G <= Gmax; G++, histp += MG)
if (*histp != 0)
{
boxp->Bmax = Bmax = B;
goto have_Bmax;
}
}
have_Bmax:
/* Update box volume.
* We use 2-norm rather than real volume here; this biases the method
* against making long narrow boxes, and it has the side benefit that
* a box is splittable iff norm > 0.
* Since the differences are expressed in histogram-cell units,
* we have to shift back to JSAMPLE units to get consistent distances;
* after which, we scale according to the selected distance scale factors.
*/
dist0 = (( + Rmax - Rmin) << R_SHIFT) * R_SCALE;
dist1 = (( + Gmax - Gmin) << G_SHIFT) * G_SCALE;
dist2 = (( + Bmax - Bmin) << B_SHIFT) * B_SCALE;
1997-11-25 06:05:25 +08:00
boxp->volume = dist0*dist0 + dist1*dist1 + dist2*dist2;
compute_color_rgb(&dummyqo, histogram, boxp, 0);
/*printf("(%d %d %d)\n", dummyqo.cmap[0].red,dummyqo.cmap[0].green,dummyqo.cmap[0].blue);
fflush(stdout);*/
1997-11-25 06:05:25 +08:00
/* Now scan remaining volume of box and compute population */
ccount = 0;
boxp->error = 0;
boxp->rerror = 0;
boxp->gerror = 0;
boxp->berror = 0;
1997-11-25 06:05:25 +08:00
for (R = Rmin; R <= Rmax; R++)
for (G = Gmin; G <= Gmax; G++)
{
histp = histogram + R*MR + G*MG + Bmin;
for (B = Bmin; B <= Bmax; B++, histp++)
if (*histp != 0)
{
int ge, be, re;
dummybox.Rmin = dummybox.Rmax = R;
dummybox.Gmin = dummybox.Gmax = G;
dummybox.Bmin = dummybox.Bmax = B;
compute_color_rgb(&dummyqo, histogram, &dummybox, 1);
re = dummyqo.cmap[0].red - dummyqo.cmap[1].red;
ge = dummyqo.cmap[0].green - dummyqo.cmap[1].green;
be = dummyqo.cmap[0].blue - dummyqo.cmap[1].blue;
boxp->rerror += (*histp) * re*re;
boxp->gerror += (*histp) * ge*ge;
boxp->berror += (*histp) * be*be;
boxp->error += (*histp) *
(
re*re*R_SCALE + ge*ge*G_SCALE + be*be*B_SCALE
);
ccount += *histp;
1997-11-25 06:05:25 +08:00
}
}
/* Scan again, taking note of halfway error point for red axis */
tempRerror = 0;
boxp->Rhalferror = Rmin;
for (R = Rmin; R < Rmax; R++)
{
dummybox.Rmin = dummybox.Rmax = R;
for (G = Gmin; G <= Gmax; G++)
{
dummybox.Gmin = dummybox.Gmax = G;
histp = histogram + R*MR + G*MG + Bmin;
for (B = Bmin; B <= Bmax; B++, histp++)
if (*histp != 0)
{
int re;
dummybox.Bmin = dummybox.Bmax = B;
compute_color_rgb(&dummyqo, histogram, &dummybox, 1);
re = dummyqo.cmap[0].red - dummyqo.cmap[1].red;
tempRerror += (*histp)*re*re;
if (tempRerror*2 > boxp->rerror)
goto green_axisscan;
else
boxp->Rhalferror = R;
}
}
}
green_axisscan:
/* Scan again, taking note of halfway error point for green axis */
tempGerror = 0;
boxp->Ghalferror = Gmin;
for (G = Gmin; G < Gmax; G++)
{
dummybox.Gmin = dummybox.Gmax = G;
for (R = Rmin; R <= Rmax; R++)
{
dummybox.Rmin = dummybox.Rmax = R;
histp = histogram + R*MR + G*MG + Bmin;
for (B = Bmin; B <= Bmax; B++, histp++)
if (*histp != 0)
{
int ge;
dummybox.Bmin = dummybox.Bmax = B;
compute_color_rgb(&dummyqo, histogram, &dummybox, 1);
ge = dummyqo.cmap[0].green - dummyqo.cmap[1].green;
tempGerror += (*histp)*ge*ge;
if (tempGerror*2 > boxp->gerror)
goto blue_axisscan;
else
boxp->Ghalferror = G;
}
}
}
blue_axisscan:
/* Scan again, taking note of halfway error point for blue axis */
tempBerror = 0;
boxp->Bhalferror = Bmin;
for (B = Bmin; B < Bmax; B++)
{
dummybox.Bmin = dummybox.Bmax = B;
for (R = Rmin; R <= Rmax; R++)
{
dummybox.Rmin = dummybox.Rmax = R;
for (G = Gmin; G <= Gmax; G++)
{
histp = histogram + R*MR + G*MG + B;
if (*histp != 0)
{
int be;
dummybox.Gmin = dummybox.Gmax = G;
compute_color_rgb(&dummyqo, histogram, &dummybox, 1);
be = dummyqo.cmap[0].blue - dummyqo.cmap[1].blue;
tempBerror += (*histp)*be*be;
if (tempBerror*2 > boxp->berror)
goto finished_axesscan;
else
boxp->Bhalferror = B;
}
}
}
}
finished_axesscan:
/*
// boxp->Rhalferror = (Rmin+Rmax)/2;
// boxp->Ghalferror = (Gmin+Gmax)/2;
// boxp->Bhalferror = (Bmin+Bmax)/2;
*/
/*boxp->error = (sqrt((double)(boxp->error/ccount)));*/
/* boxp->rerror = (sqrt((double)((boxp->rerror)/ccount)));
boxp->gerror = (sqrt((double)((boxp->gerror)/ccount)));
boxp->berror = (sqrt((double)((boxp->berror)/ccount)));*/
/*printf(":%lld / %ld: ", boxp->error, ccount);
printf("(%d-%d-%d)(%d-%d-%d)(%d-%d-%d)\n",
Rmin, boxp->Rhalferror, Rmax,
Gmin, boxp->Ghalferror, Gmax,
Bmin, boxp->Bhalferror, Bmax
);
fflush(stdout);*/
1997-11-25 06:05:25 +08:00
boxp->colorcount = ccount;
}
static int
median_cut_gray (Histogram histogram,
boxptr boxlist,
int numboxes,
int desired_colors)
/* Repeatedly select and split the largest box until we have enough boxes */
{
int lb;
boxptr b1, b2;
while (numboxes < desired_colors)
{
/* Select box to split.
* Current algorithm: by population for first half, then by volume.
*/
#if 0
1997-11-25 06:05:25 +08:00
if (numboxes*2 <= desired_colors)
{
b1 = find_biggest_color_pop (boxlist, numboxes);
}
else
#endif
1997-11-25 06:05:25 +08:00
{
b1 = find_biggest_volume (boxlist, numboxes);
}
if (b1 == NULL) /* no splittable boxes left! */
break;
b2 = boxlist + numboxes; /* where new box will go */
/* Copy the color bounds to the new box. */
b2->Rmax = b1->Rmax;
b2->Rmin = b1->Rmin;
/* Current algorithm: split at halfway point.
* (Since the box has been shrunk to minimum volume,
* any split will produce two nonempty subboxes.)
* Note that lb value is max for lower box, so must be < old max.
*/
lb = (b1->Rmax + b1->Rmin) / 2;
b1->Rmax = lb;
b2->Rmin = lb + 1;
/* Update stats for boxes */
update_box_gray (histogram, b1);
update_box_gray (histogram, b2);
numboxes++;
}
return numboxes;
}
static int
median_cut_rgb (Histogram histogram,
boxptr boxlist,
int numboxes,
int desired_colors)
/* Repeatedly select and split the largest box until we have enough boxes */
{
int n,lb;
guint64 R,G,B,cmax;
1997-11-25 06:05:25 +08:00
boxptr b1,b2;
while (numboxes < desired_colors) {
#if 0
1997-11-25 06:05:25 +08:00
/* Select box to split.
* Current algorithm: by population for first half, then by volume.
*/
if (1 || numboxes*2 <= desired_colors)
1997-11-25 06:05:25 +08:00
{
new ui for the "Layer Offset" dialog. 1999-07-22 Michael Natterer <mitschel@cs.tu-berlin.de> * app/channel_ops.[ch]: new ui for the "Layer Offset" dialog. * app/channels_dialog.c * app/layers_dialog.c: major code cleanup: Folded some callbacks into common ones, "widget" instead of "w", indentation, ... * app/commands.c * app/interface.[ch] * app/global_edit.c: the query boxes must be shown by the caller now. There's no need to split up the string for the message box manually as the Gtk 1.2 label widget handles newlines corectly. Added the "edge_lock" toggle to the "Shrink Selection" dialog. Nicer spacings for the query and message boxes. * app/ink.c: tried to grab the pointer in the blob preview but failed. Left the code there as a reminder (commented out). * app/menus.c: reordered <Image>/Select. I was bored and grep-ed the sources for ancient or deprecated stuff: * app/about_dialog.[ch] * app/actionarea.[ch] * app/app_procs.c * app/brush_edit.c * app/brush_select.c * app/color_select.c * app/convert.c * app/devices.c * app/gdisplay.c * app/gdisplay_ops.c * app/histogram_tool.[ch] * app/info_window.c * app/install.c * app/ops_buttons.c * app/palette.c * app/palette_select.c * app/paths_dialog.c * app/pattern_select.c * app/resize.c * app/scale_toolc.c * app/text_tool.c: s/container_border_width/container_set_border_width/g, s/sprintf/g_snprintf/g, replaced some constant string lengths with strlen(x). * app/bezier_select.c * app/blend.c * app/boundary.c * app/errors.[ch] * app/free_select.c * app/gimpbrushlist.c * app/gimprc.c * app/iscissors.c * app/main.c * app/patterns.[ch] * app/text_tool.c: namespace fanaticism: prefixed all gimp error functions with "gimp_" and formated the messages more uniformly. * app/gradient.c * app/gradient_select.c: same stuff as above for the ui code. There are still some sub-dialogs which need cleanup. Did some cleanup in most of these files: prototypes, removed tons of #include's, i18n fixes, s/w/widget/ as above, indentation, ...
1999-07-23 00:21:10 +08:00
g_print ("O ");
1997-11-25 06:05:25 +08:00
b1 = find_biggest_color_pop (boxlist, numboxes);
}
else
{
new ui for the "Layer Offset" dialog. 1999-07-22 Michael Natterer <mitschel@cs.tu-berlin.de> * app/channel_ops.[ch]: new ui for the "Layer Offset" dialog. * app/channels_dialog.c * app/layers_dialog.c: major code cleanup: Folded some callbacks into common ones, "widget" instead of "w", indentation, ... * app/commands.c * app/interface.[ch] * app/global_edit.c: the query boxes must be shown by the caller now. There's no need to split up the string for the message box manually as the Gtk 1.2 label widget handles newlines corectly. Added the "edge_lock" toggle to the "Shrink Selection" dialog. Nicer spacings for the query and message boxes. * app/ink.c: tried to grab the pointer in the blob preview but failed. Left the code there as a reminder (commented out). * app/menus.c: reordered <Image>/Select. I was bored and grep-ed the sources for ancient or deprecated stuff: * app/about_dialog.[ch] * app/actionarea.[ch] * app/app_procs.c * app/brush_edit.c * app/brush_select.c * app/color_select.c * app/convert.c * app/devices.c * app/gdisplay.c * app/gdisplay_ops.c * app/histogram_tool.[ch] * app/info_window.c * app/install.c * app/ops_buttons.c * app/palette.c * app/palette_select.c * app/paths_dialog.c * app/pattern_select.c * app/resize.c * app/scale_toolc.c * app/text_tool.c: s/container_border_width/container_set_border_width/g, s/sprintf/g_snprintf/g, replaced some constant string lengths with strlen(x). * app/bezier_select.c * app/blend.c * app/boundary.c * app/errors.[ch] * app/free_select.c * app/gimpbrushlist.c * app/gimprc.c * app/iscissors.c * app/main.c * app/patterns.[ch] * app/text_tool.c: namespace fanaticism: prefixed all gimp error functions with "gimp_" and formated the messages more uniformly. * app/gradient.c * app/gradient_select.c: same stuff as above for the ui code. There are still some sub-dialogs which need cleanup. Did some cleanup in most of these files: prototypes, removed tons of #include's, i18n fixes, s/w/widget/ as above, indentation, ...
1999-07-23 00:21:10 +08:00
g_print (". ");
1997-11-25 06:05:25 +08:00
b1 = find_biggest_volume (boxlist, numboxes);
}
#endif
b1 = find_split_candidate (boxlist, numboxes);
1997-11-25 06:05:25 +08:00
if (b1 == NULL) /* no splittable boxes left! */
break;
b2 = boxlist + numboxes; /* where new box will go */
/* Copy the color bounds to the new box. */
b2->Rmax = b1->Rmax; b2->Gmax = b1->Gmax; b2->Bmax = b1->Bmax;
b2->Rmin = b1->Rmin; b2->Gmin = b1->Gmin; b2->Bmin = b1->Bmin;
/* Choose which axis to split the box on.
* See notes in update_box about scaling distances.
*/
/*
// R = ((b1->Rmax - b1->Rmin) << R_SHIFT) * R_SCALE;
// G = ((b1->Gmax - b1->Gmin) << G_SHIFT) * G_SCALE;
//B = ((b1->Bmax - b1->Bmin) << B_SHIFT) * B_SCALE;
*/
R = R_SCALE*b1->rerror;/* * (((b1->Rmax - b1->Rmin) << R_SHIFT)) * R_SCALE; */
G = G_SCALE*b1->gerror;/* * (((b1->Gmax - b1->Gmin) << G_SHIFT)) * G_SCALE; */
B = B_SCALE*b1->berror;/* * (((b1->Bmax - b1->Bmin) << B_SHIFT)) * B_SCALE; */
1997-11-25 06:05:25 +08:00
/* We want to break any ties in favor of green, then red, blue last.
*/
cmax = G; n = 1;
if (R > cmax) { cmax = R; n = 0; }
if (B > cmax) { n = 2; }
/* Choose split point along selected axis, and update box bounds.
* Note that lb value is max for lower box, so must be < old max.
*/
switch (n)
{
case 0:
lb = b1->Rhalferror;/* *0 + (b1->Rmax + b1->Rmin) / 2; */
1997-11-25 06:05:25 +08:00
b1->Rmax = lb;
b2->Rmin = lb+1;
g_assert(b1->Rmax >= b1->Rmin);
g_assert(b2->Rmax >= b2->Rmin);
1997-11-25 06:05:25 +08:00
break;
case 1:
lb = b1->Ghalferror;/* *0 + (b1->Gmax + b1->Gmin) / 2; */
1997-11-25 06:05:25 +08:00
b1->Gmax = lb;
b2->Gmin = lb+1;
g_assert(b1->Gmax >= b1->Gmin);
g_assert(b2->Gmax >= b2->Gmin);
1997-11-25 06:05:25 +08:00
break;
case 2:
lb = b1->Bhalferror;/* *0 + (b1->Bmax + b1->Bmin) / 2; */
1997-11-25 06:05:25 +08:00
b1->Bmax = lb;
b2->Bmin = lb+1;
g_assert(b1->Bmax >= b1->Bmin);
g_assert(b2->Bmax >= b2->Bmin);
1997-11-25 06:05:25 +08:00
break;
}
/* Update stats for boxes */
update_box_rgb (histogram, b1);
update_box_rgb (histogram, b2);
numboxes++;
}
return numboxes;
}
static void
compute_color_gray (QuantizeObj *quantobj,
Histogram histogram,
boxptr boxp,
int icolor)
/* Compute representative color for a box, put it in colormap[icolor] */
{
int i, min, max;
long count;
long total;
long gtotal;
min = boxp->Rmin;
max = boxp->Rmax;
total = 0;
gtotal = 0;
for (i = min; i <= max; i++)
{
count = histogram[i];
if (count != 0)
{
total += count;
gtotal += i * count;
}
}
if (total != 0)
{
quantobj->cmap[icolor].red = (gtotal + (total >> 1)) / total;
quantobj->cmap[icolor].green = quantobj->cmap[icolor].red;
quantobj->cmap[icolor].blue = quantobj->cmap[icolor].red;
}
else /* The only situation where total==0 is if the image was null or
* all-transparent. In that case we just put a dummy value in
* the colourmap.
*/
{
quantobj->cmap[icolor].red =
quantobj->cmap[icolor].green =
quantobj->cmap[icolor].blue = 0;
}
1997-11-25 06:05:25 +08:00
}
static void
compute_color_rgb (QuantizeObj *quantobj,
Histogram histogram,
boxptr boxp,
int icolor)
/* Compute representative color for a box, put it in colormap[icolor] */
{
/* Current algorithm: mean weighted by pixels (not colors) */
/* Note it is important to get the rounding correct! */
ColorFreq * histp;
int R, G, B;
int Rmin, Rmax;
int Gmin, Gmax;
int Bmin, Bmax;
long count;
long total = 0;
long Rtotal = 0;
long Gtotal = 0;
long Btotal = 0;
Rmin = boxp->Rmin; Rmax = boxp->Rmax;
Gmin = boxp->Gmin; Gmax = boxp->Gmax;
Bmin = boxp->Bmin; Bmax = boxp->Bmax;
for (R = Rmin; R <= Rmax; R++)
for (G = Gmin; G <= Gmax; G++)
{
histp = histogram + R*MR + G*MG + Bmin;
for (B = Bmin; B <= Bmax; B++)
{
if ((count = *histp++) != 0)
{
total += count;
Rtotal += ((R << R_SHIFT) + ((1<<R_SHIFT)>>1)) * count;
Gtotal += ((G << G_SHIFT) + ((1<<G_SHIFT)>>1)) * count;
Btotal += ((B << B_SHIFT) + ((1<<B_SHIFT)>>1)) * count;
}
}
}
if (total != 0)
{
quantobj->cmap[icolor].red = (Rtotal + (total>>1)) / total;
quantobj->cmap[icolor].green = (Gtotal + (total>>1)) / total;
quantobj->cmap[icolor].blue = (Btotal + (total>>1)) / total;
}
else /* The only situation where total==0 is if the image was null or
* all-transparent. In that case we just put a dummy value in
* the colourmap.
*/
{
quantobj->cmap[icolor].red =
quantobj->cmap[icolor].green =
quantobj->cmap[icolor].blue = 0;
}
}
static void
select_colors_gray (QuantizeObj *quantobj,
Histogram histogram)
/* Master routine for color selection */
{
boxptr boxlist;
int numboxes;
int desired = quantobj->desired_number_of_colors;
int i;
/* Allocate workspace for box list */
boxlist = (boxptr) g_malloc ( desired * sizeof(box) );
/* Initialize one box containing whole space */
numboxes = 1;
boxlist[0].Rmin = 0;
boxlist[0].Rmax = 255;
/* Shrink it to actually-used volume and set its statistics */
update_box_gray (histogram, boxlist);
/* Perform median-cut to produce final box list */
numboxes = median_cut_gray (histogram, boxlist, numboxes, desired);
quantobj->actual_number_of_colors = numboxes;
/* Compute the representative color for each box, fill colormap */
for (i = 0; i < numboxes; i++)
compute_color_gray (quantobj, histogram, boxlist + i, i);
}
static void
select_colors_rgb (QuantizeObj *quantobj,
Histogram histogram)
/* Master routine for color selection */
{
boxptr boxlist;
int numboxes;
int desired = quantobj->desired_number_of_colors;
int i;
/* Allocate workspace for box list */
boxlist = (boxptr) g_malloc ( desired * sizeof(box) );
/* Initialize one box containing whole space */
numboxes = 1;
boxlist[0].Rmin = 0;
boxlist[0].Rmax = (1 << PRECISION_R) - 1;
boxlist[0].Gmin = 0;
boxlist[0].Gmax = (1 << PRECISION_G) - 1;
boxlist[0].Bmin = 0;
boxlist[0].Bmax = (1 << PRECISION_B) - 1;
/* Shrink it to actually-used volume and set its statistics */
update_box_rgb (histogram, boxlist);
/* Perform median-cut to produce final box list */
numboxes = median_cut_rgb (histogram, boxlist, numboxes, desired);
quantobj->actual_number_of_colors = numboxes;
/* Compute the representative color for each box, fill colormap */
for (i = 0; i < numboxes; i++)
compute_color_rgb (quantobj, histogram, boxlist + i, i);
}
/*
* These routines are concerned with the time-critical task of mapping input
* colors to the nearest color in the selected colormap.
*
* We re-use the histogram space as an "inverse color map", essentially a
* cache for the results of nearest-color searches. All colors within a
* histogram cell will be mapped to the same colormap entry, namely the one
* closest to the cell's center. This may not be quite the closest entry to
* the actual input color, but it's almost as good. A zero in the cache
* indicates we haven't found the nearest color for that cell yet; the array
* is cleared to zeroes before starting the mapping pass. When we find the
* nearest color for a cell, its colormap index plus one is recorded in the
* cache for future use. The pass2 scanning routines call fill_inverse_cmap
* when they need to use an unfilled entry in the cache.
*
* Our method of efficiently finding nearest colors is based on the "locally
* sorted search" idea described by Heckbert and on the incremental distance
* calculation described by Spencer W. Thomas in chapter III.1 of Graphics
* Gems II (James Arvo, ed. Academic Press, 1991). Thomas points out that
* the distances from a given colormap entry to each cell of the histogram can
* be computed quickly using an incremental method: the differences between
* distances to adjacent cells themselves differ by a constant. This allows a
* fairly fast implementation of the "brute force" approach of computing the
* distance from every colormap entry to every histogram cell. Unfortunately,
* it needs a work array to hold the best-distance-so-far for each histogram
* cell (because the inner loop has to be over cells, not colormap entries).
* The work array elements have to be ints, so the work array would need
* 256Kb at our recommended precision. This is not feasible in DOS machines.
*
* To get around these problems, we apply Thomas' method to compute the
* nearest colors for only the cells within a small subbox of the histogram.
* The work array need be only as big as the subbox, so the memory usage
* problem is solved. Furthermore, we need not fill subboxes that are never
* referenced in pass2; many images use only part of the color gamut, so a
* fair amount of work is saved. An additional advantage of this
* approach is that we can apply Heckbert's locality criterion to quickly
* eliminate colormap entries that are far away from the subbox; typically
* three-fourths of the colormap entries are rejected by Heckbert's criterion,
* and we need not compute their distances to individual cells in the subbox.
* The speed of this approach is heavily influenced by the subbox size: too
* small means too much overhead, too big loses because Heckbert's criterion
* can't eliminate as many colormap entries. Empirically the best subbox
* size seems to be about 1/512th of the histogram (1/8th in each direction).
*
* Thomas' article also describes a refined method which is asymptotically
* faster than the brute-force method, but it is also far more complex and
* cannot efficiently be applied to small subboxes. It is therefore not
* useful for programs intended to be portable to DOS machines. On machines
* with plenty of memory, filling the whole histogram in one shot with Thomas'
* refined method might be faster than the present code --- but then again,
* it might not be any faster, and it's certainly more complicated.
*/
/* log2(histogram cells in update box) for each axis; this can be adjusted */
#define BOX_R_LOG (PRECISION_R-3)
#define BOX_G_LOG (PRECISION_G-3)
#define BOX_B_LOG (PRECISION_B-3)
#define BOX_R_ELEMS (1<<BOX_R_LOG) /* # of hist cells in update box */
#define BOX_G_ELEMS (1<<BOX_G_LOG)
#define BOX_B_ELEMS (1<<BOX_B_LOG)
#define BOX_R_SHIFT (R_SHIFT + BOX_R_LOG)
#define BOX_G_SHIFT (G_SHIFT + BOX_G_LOG)
#define BOX_B_SHIFT (B_SHIFT + BOX_B_LOG)
/*
* The next three routines implement inverse colormap filling. They could
* all be folded into one big routine, but splitting them up this way saves
* some stack space (the mindist[] and bestdist[] arrays need not coexist)
* and may allow some compilers to produce better code by registerizing more
* inner-loop variables.
*/
static int
find_nearby_colors (QuantizeObj *quantobj,
int minR,
int minG,
int minB,
int colorlist[])
/* Locate the colormap entries close enough to an update box to be candidates
* for the nearest entry to some cell(s) in the update box. The update box
* is specified by the center coordinates of its first cell. The number of
* candidate colormap entries is returned, and their colormap indexes are
* placed in colorlist[].
* This routine uses Heckbert's "locally sorted search" criterion to select
* the colors that need further consideration.
*/
{
int numcolors = quantobj->actual_number_of_colors;
int maxR, maxG, maxB;
int centerR, centerG, centerB;
int i, x, ncolors;
int minmaxdist, min_dist, max_dist, tdist;
int mindist[MAXNUMCOLORS]; /* min distance to colormap entry i */
/* Compute true coordinates of update box's upper corner and center.
* Actually we compute the coordinates of the center of the upper-corner
* histogram cell, which are the upper bounds of the volume we care about.
* Note that since ">>" rounds down, the "center" values may be closer to
* min than to max; hence comparisons to them must be "<=", not "<".
*/
maxR = minR + ((1 << BOX_R_SHIFT) - (1 << R_SHIFT));
centerR = (minR + maxR) >> 1;
maxG = minG + ((1 << BOX_G_SHIFT) - (1 << G_SHIFT));
centerG = (minG + maxG) >> 1;
maxB = minB + ((1 << BOX_B_SHIFT) - (1 << B_SHIFT));
centerB = (minB + maxB) >> 1;
/* For each color in colormap, find:
* 1. its minimum squared-distance to any point in the update box
* (zero if color is within update box);
* 2. its maximum squared-distance to any point in the update box.
* Both of these can be found by considering only the corners of the box.
* We save the minimum distance for each color in mindist[];
* only the smallest maximum distance is of interest.
*/
minmaxdist = 0x7FFFFFFFL;
for (i = 0; i < numcolors; i++) {
/* We compute the squared-R-distance term, then add in the other two. */
x = quantobj->cmap[i].red;
if (x < minR) {
tdist = (x - minR) * R_SCALE;
min_dist = tdist*tdist;
tdist = (x - maxR) * R_SCALE;
max_dist = tdist*tdist;
} else if (x > maxR) {
tdist = (x - maxR) * R_SCALE;
min_dist = tdist*tdist;
tdist = (x - minR) * R_SCALE;
max_dist = tdist*tdist;
} else {
/* within cell range so no contribution to min_dist */
min_dist = 0;
if (x <= centerR) {
tdist = (x - maxR) * R_SCALE;
max_dist = tdist*tdist;
} else {
tdist = (x - minR) * R_SCALE;
max_dist = tdist*tdist;
}
}
x = quantobj->cmap[i].green;
if (x < minG) {
tdist = (x - minG) * G_SCALE;
min_dist += tdist*tdist;
tdist = (x - maxG) * G_SCALE;
max_dist += tdist*tdist;
} else if (x > maxG) {
tdist = (x - maxG) * G_SCALE;
min_dist += tdist*tdist;
tdist = (x - minG) * G_SCALE;
max_dist += tdist*tdist;
} else {
/* within cell range so no contribution to min_dist */
if (x <= centerG) {
tdist = (x - maxG) * G_SCALE;
max_dist += tdist*tdist;
} else {
tdist = (x - minG) * G_SCALE;
max_dist += tdist*tdist;
}
}
x = quantobj->cmap[i].blue;
if (x < minB) {
tdist = (x - minB) * B_SCALE;
min_dist += tdist*tdist;
tdist = (x - maxB) * B_SCALE;
max_dist += tdist*tdist;
} else if (x > maxB) {
tdist = (x - maxB) * B_SCALE;
min_dist += tdist*tdist;
tdist = (x - minB) * B_SCALE;
max_dist += tdist*tdist;
} else {
/* within cell range so no contribution to min_dist */
if (x <= centerB) {
tdist = (x - maxB) * B_SCALE;
max_dist += tdist*tdist;
} else {
tdist = (x - minB) * B_SCALE;
max_dist += tdist*tdist;
}
}
mindist[i] = min_dist; /* save away the results */
if (max_dist < minmaxdist)
minmaxdist = max_dist;
}
/* Now we know that no cell in the update box is more than minmaxdist
* away from some colormap entry. Therefore, only colors that are
* within minmaxdist of some part of the box need be considered.
*/
ncolors = 0;
for (i = 0; i < numcolors; i++) {
if (mindist[i] <= minmaxdist)
colorlist[ncolors++] = i;
}
return ncolors;
}
static void
find_best_colors (QuantizeObj *quantobj,
int minR,
int minG,
int minB,
int numcolors,
int colorlist[],
int bestcolor[])
/* Find the closest colormap entry for each cell in the update box,
* given the list of candidate colors prepared by find_nearby_colors.
* Return the indexes of the closest entries in the bestcolor[] array.
* This routine uses Thomas' incremental distance calculation method to
* find the distance from a colormap entry to successive cells in the box.
*/
{
int iR, iG, iB;
int i, icolor;
int * bptr; /* pointer into bestdist[] array */
int * cptr; /* pointer into bestcolor[] array */
int dist0, dist1; /* initial distance values */
int dist2; /* current distance in inner loop */
int xx0, xx1; /* distance increments */
int xx2;
int inR, inG, inB; /* initial values for increments */
/* This array holds the distance to the nearest-so-far color for each cell */
int bestdist[BOX_R_ELEMS * BOX_G_ELEMS * BOX_B_ELEMS];
/* Initialize best-distance for each cell of the update box */
bptr = bestdist;
for (i = BOX_R_ELEMS*BOX_G_ELEMS*BOX_B_ELEMS-1; i >= 0; i--)
*bptr++ = 0x7FFFFFFFL;
/* For each color selected by find_nearby_colors,
* compute its distance to the center of each cell in the box.
* If that's less than best-so-far, update best distance and color number.
*/
/* Nominal steps between cell centers ("x" in Thomas article) */
#define STEP_R ((1 << R_SHIFT) * R_SCALE)
#define STEP_G ((1 << G_SHIFT) * G_SCALE)
#define STEP_B ((1 << B_SHIFT) * B_SCALE)
for (i = 0; i < numcolors; i++) {
icolor = colorlist[i];
/* Compute (square of) distance from minR/G/B to this color */
inR = (minR - quantobj->cmap[icolor].red) * R_SCALE;
dist0 = inR*inR;
inG = (minG - quantobj->cmap[icolor].green) * G_SCALE;
dist0 += inG*inG;
inB = (minB - quantobj->cmap[icolor].blue) * B_SCALE;
dist0 += inB*inB;
/* Form the initial difference increments */
inR = inR * (2 * STEP_R) + STEP_R * STEP_R;
inG = inG * (2 * STEP_G) + STEP_G * STEP_G;
inB = inB * (2 * STEP_B) + STEP_B * STEP_B;
/* Now loop over all cells in box, updating distance per Thomas method */
bptr = bestdist;
cptr = bestcolor;
xx0 = inR;
for (iR = BOX_R_ELEMS-1; iR >= 0; iR--) {
dist1 = dist0;
xx1 = inG;
for (iG = BOX_G_ELEMS-1; iG >= 0; iG--) {
dist2 = dist1;
xx2 = inB;
for (iB = BOX_B_ELEMS-1; iB >= 0; iB--) {
if (dist2 < *bptr) {
*bptr = dist2;
*cptr = icolor;
}
dist2 += xx2;
xx2 += 2 * STEP_B * STEP_B;
bptr++;
cptr++;
}
dist1 += xx1;
xx1 += 2 * STEP_G * STEP_G;
}
dist0 += xx0;
xx0 += 2 * STEP_R * STEP_R;
}
}
}
static void
fill_inverse_cmap_gray (QuantizeObj *quantobj,
Histogram histogram,
int pixel)
/* Fill the inverse-colormap entries in the update box that contains */
/* histogram cell R/G/B. (Only that one cell MUST be filled, but */
/* we can fill as many others as we wish.) */
{
Color *cmap;
long dist;
long mindist;
int mindisti;
int i;
cmap = quantobj->cmap;
mindist = 65536;
mindisti = -1;
for (i = 0; i < quantobj->actual_number_of_colors; i++)
{
dist = pixel - cmap[i].red;
dist *= dist;
if (dist < mindist)
{
mindist = dist;
mindisti = i;
}
}
if (i >= 0)
histogram[pixel] = mindisti + 1;
}
static void
fill_inverse_cmap_rgb (QuantizeObj *quantobj,
Histogram histogram,
int R,
int G,
int B)
/* Fill the inverse-colormap entries in the update box that contains */
/* histogram cell R/G/B. (Only that one cell MUST be filled, but */
/* we can fill as many others as we wish.) */
{
int minR, minG, minB; /* lower left corner of update box */
int iR, iG, iB;
int * cptr; /* pointer into bestcolor[] array */
ColorFreq * cachep; /* pointer into main cache array */
/* This array lists the candidate colormap indexes. */
int colorlist[MAXNUMCOLORS];
int numcolors; /* number of candidate colors */
/* This array holds the actually closest colormap index for each cell. */
int bestcolor[BOX_R_ELEMS * BOX_G_ELEMS * BOX_B_ELEMS];
/* Convert cell coordinates to update box id */
R >>= BOX_R_LOG;
G >>= BOX_G_LOG;
B >>= BOX_B_LOG;
/* Compute true coordinates of update box's origin corner.
* Actually we compute the coordinates of the center of the corner
* histogram cell, which are the lower bounds of the volume we care about.
*/
minR = (R << BOX_R_SHIFT) + ((1 << R_SHIFT) >> 1);
minG = (G << BOX_G_SHIFT) + ((1 << G_SHIFT) >> 1);
minB = (B << BOX_B_SHIFT) + ((1 << B_SHIFT) >> 1);
/* Determine which colormap entries are close enough to be candidates
* for the nearest entry to some cell in the update box.
*/
numcolors = find_nearby_colors (quantobj, minR, minG, minB, colorlist);
/* Determine the actually nearest colors. */
find_best_colors (quantobj, minR, minG, minB, numcolors, colorlist,
bestcolor);
/* Save the best color numbers (plus 1) in the main cache array */
R <<= BOX_R_LOG; /* convert id back to base cell indexes */
G <<= BOX_G_LOG;
B <<= BOX_B_LOG;
cptr = bestcolor;
for (iR = 0; iR < BOX_R_ELEMS; iR++) {
for (iG = 0; iG < BOX_G_ELEMS; iG++) {
cachep = & histogram[(R+iR)*MR+(G+iG)*MG+B];
for (iB = 0; iB < BOX_B_ELEMS; iB++) {
*cachep++ = (*cptr++) + 1;
}
}
}
}
/* This is pass 1 */
static void
median_cut_pass1_gray (QuantizeObj *quantobj)
{
select_colors_gray (quantobj, quantobj->histogram);
}
static void
median_cut_pass1_rgb (QuantizeObj *quantobj)
{
select_colors_rgb (quantobj, quantobj->histogram);
}
static void
monopal_pass1 (QuantizeObj *quantobj)
{
quantobj -> actual_number_of_colors = 2;
quantobj -> cmap[0].red = 0;
quantobj -> cmap[0].green = 0;
quantobj -> cmap[0].blue = 0;
quantobj -> cmap[1].red = 255;
quantobj -> cmap[1].green = 255;
quantobj -> cmap[1].blue = 255;
}
static void
webpal_pass1 (QuantizeObj *quantobj)
{
int i;
quantobj -> actual_number_of_colors = 216;
for (i=0;i<216;i++)
{
quantobj->cmap[i].red = webpal[i*3];
quantobj->cmap[i].green = webpal[i*3 +1];
quantobj->cmap[i].blue = webpal[i*3 +2];
}
}
static void
custompal_pass1 (QuantizeObj *quantobj)
{
int i;
GSList *list;
1999-10-28 23:05:49 +08:00
PaletteEntry *entry;
/* fprintf(stderr, "custompal_pass1: using (theCustomPalette %s) from (file %s)\n",
theCustomPalette->name, theCustomPalette->filename); */
for (i=0,list=theCustomPalette->colors;
list;
i++,list=g_slist_next(list))
{
1999-10-28 23:05:49 +08:00
entry = (PaletteEntry *) list->data;
quantobj->cmap[i].red = entry->color[0];
quantobj->cmap[i].green = entry->color[1];
quantobj->cmap[i].blue = entry->color[2];
}
quantobj -> actual_number_of_colors = i;
}
1997-11-25 06:05:25 +08:00
/*
* Map some rows of pixels to the output colormapped representation.
*/
static void
median_cut_pass2_no_dither_gray (QuantizeObj *quantobj,
Layer *layer,
TileManager *new_tiles)
{
PixelRegion srcPR, destPR;
Histogram histogram = quantobj->histogram;
ColorFreq * cachep;
unsigned char *src, *dest;
int row, col;
int pixel;
int has_alpha;
unsigned long* index_used_count = quantobj->index_used_count;
int alpha_dither = quantobj->want_alpha_dither;
int offsetx, offsety;
1997-11-25 06:05:25 +08:00
void *pr;
drawable_offsets (GIMP_DRAWABLE(layer), &offsetx, &offsety);
has_alpha = layer_has_alpha (layer);
pixel_region_init (&srcPR, GIMP_DRAWABLE(layer)->tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, FALSE);
pixel_region_init (&destPR, new_tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, TRUE);
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++)
{
for (col = 0; col < srcPR.w; col++)
{
/* get pixel value and index into the cache */
pixel = src[GRAY_PIX];
cachep = &histogram[pixel];
/* If we have not seen this color before, find nearest colormap entry */
/* and update the cache */
if (*cachep == 0)
fill_inverse_cmap_gray (quantobj, histogram, pixel);
if (has_alpha)
{
if ((dest[ALPHA_I_PIX] =
(
(alpha_dither ?
((src[ALPHA_G_PIX] << 6) > (255 * DM[(col+offsetx+srcPR.x)&DM_WIDTHMASK][(row+offsety+srcPR.y)&DM_HEIGHTMASK])) :
(src[ALPHA_G_PIX] > 127)
) ? 255 : 0)))
index_used_count[dest[INDEXED_PIX] = *cachep - 1]++;
}
else
{
/* Now emit the colormap index for this cell */
index_used_count[dest[INDEXED_PIX] = *cachep - 1]++;
}
src += srcPR.bytes;
dest += destPR.bytes;
}
}
}
}
static void
median_cut_pass2_fixed_dither_gray (QuantizeObj *quantobj,
Layer *layer,
TileManager *new_tiles)
{
PixelRegion srcPR, destPR;
Histogram histogram = quantobj->histogram;
ColorFreq* cachep;
Color* color;
unsigned char *src, *dest;
int row, col;
int pixel;
int re, R;
unsigned long* index_used_count = quantobj->index_used_count;
int has_alpha;
int alpha_dither = quantobj->want_alpha_dither;
int offsetx, offsety;
void *pr;
drawable_offsets (GIMP_DRAWABLE(layer), &offsetx, &offsety);
1997-11-25 06:05:25 +08:00
has_alpha = layer_has_alpha (layer);
pixel_region_init (&srcPR, GIMP_DRAWABLE(layer)->tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, FALSE);
pixel_region_init (&destPR, new_tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, TRUE);
1997-11-25 06:05:25 +08:00
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++)
{
for (col = 0; col < srcPR.w; col++)
{
int dmval =
DM[(col+offsetx+srcPR.x)&DM_WIDTHMASK]
[(row+offsety+srcPR.y)&DM_HEIGHTMASK];
1997-11-25 06:05:25 +08:00
/* get pixel value and index into the cache */
pixel = src[GRAY_PIX];
cachep = &histogram[pixel];
/* If we have not seen this color before, find nearest colormap entry */
/* and update the cache */
if (*cachep == 0)
fill_inverse_cmap_gray (quantobj, histogram, pixel);
color = &quantobj->cmap[*cachep - 1];
re = src[GRAY_PIX] - color->red;
re = (re * dmval * 2) / 63;
R = (CLAMP0255(color->red + re));
cachep = &histogram[R];
/* If we have not seen this color before, find nearest
colormap entry and update the cache */
if (*cachep == 0)
fill_inverse_cmap_gray (quantobj, histogram, R);
1997-11-25 06:05:25 +08:00
if (has_alpha)
{
if ((dest[ALPHA_I_PIX] =
((alpha_dither ?
((src[ALPHA_G_PIX] << 6) > (255 * dmval)) :
(src[ALPHA_G_PIX] > 127)
) ? 255 : 0)))
index_used_count[dest[INDEXED_PIX] = *cachep - 1]++;
}
else
{
/* Now emit the colormap index for this cell, barfbarf */
index_used_count[dest[INDEXED_PIX] = *cachep - 1]++;
}
1997-11-25 06:05:25 +08:00
src += srcPR.bytes;
dest += destPR.bytes;
}
}
}
}
static void
median_cut_pass2_no_dither_rgb (QuantizeObj *quantobj,
Layer *layer,
TileManager *new_tiles)
{
PixelRegion srcPR, destPR;
Histogram histogram = quantobj->histogram;
ColorFreq * cachep;
unsigned char *src, *dest;
int R, G, B;
int row, col;
int has_alpha;
void *pr;
int red_pix = RED_PIX;
int green_pix = GREEN_PIX;
int blue_pix = BLUE_PIX;
int alpha_pix = ALPHA_PIX;
int alpha_dither = quantobj->want_alpha_dither;
int offsetx, offsety;
unsigned long* index_used_count = quantobj->index_used_count;
drawable_offsets (GIMP_DRAWABLE(layer), &offsetx, &offsety);
1997-11-25 06:05:25 +08:00
/* In the case of web/mono palettes, we actually force
* grayscale drawables through the rgb pass2 functions
*/
if (drawable_gray (GIMP_DRAWABLE(layer)))
1997-11-25 06:05:25 +08:00
red_pix = green_pix = blue_pix = GRAY_PIX;
has_alpha = layer_has_alpha (layer);
pixel_region_init (&srcPR, GIMP_DRAWABLE(layer)->tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, FALSE);
pixel_region_init (&destPR, new_tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, TRUE);
1997-11-25 06:05:25 +08:00
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++)
{
for (col = 0; col < srcPR.w; col++)
{
if (has_alpha)
{
if ((dest[ALPHA_I_PIX] =
(alpha_dither ?
((src[alpha_pix] << 6) > (255 * DM[(col+offsetx+srcPR.x)&DM_WIDTHMASK][(row+offsety+srcPR.y)&DM_HEIGHTMASK])) :
(src[alpha_pix] > 127)
) ? 255 : 0)
== 0)
{
goto next_pixel;
}
}
1997-11-25 06:05:25 +08:00
/* get pixel value and index into the cache */
R = (src[red_pix]) >> R_SHIFT;
G = (src[green_pix]) >> G_SHIFT;
B = (src[blue_pix]) >> B_SHIFT;
cachep = &histogram[R*MR + G*MG + B];
/* If we have not seen this color before, find nearest
colormap entry and update the cache */
1997-11-25 06:05:25 +08:00
if (*cachep == 0)
fill_inverse_cmap_rgb (quantobj, histogram, R, G, B);
/* Now emit the colormap index for this cell, barfbarf */
index_used_count[dest[INDEXED_PIX] = *cachep - 1]++;
1997-11-25 06:05:25 +08:00
next_pixel:
1997-11-25 06:05:25 +08:00
src += srcPR.bytes;
dest += destPR.bytes;
}
}
}
}
static void
median_cut_pass2_fixed_dither_rgb (QuantizeObj *quantobj,
Layer *layer,
TileManager *new_tiles)
{
PixelRegion srcPR, destPR;
Histogram histogram = quantobj->histogram;
ColorFreq* cachep;
Color* color;
unsigned char *src, *dest;
int R, G, B;
int row, col;
int has_alpha;
int re, ge, be;
void* pr;
int red_pix = RED_PIX;
int green_pix = GREEN_PIX;
int blue_pix = BLUE_PIX;
int alpha_pix = ALPHA_PIX;
int alpha_dither = quantobj->want_alpha_dither;
int offsetx, offsety;
unsigned long* index_used_count = quantobj->index_used_count;
drawable_offsets (GIMP_DRAWABLE(layer), &offsetx, &offsety);
/* In the case of web/mono palettes, we actually force
* grayscale drawables through the rgb pass2 functions
*/
if (drawable_gray (GIMP_DRAWABLE(layer)))
red_pix = green_pix = blue_pix = GRAY_PIX;
has_alpha = layer_has_alpha (layer);
pixel_region_init (&srcPR, GIMP_DRAWABLE(layer)->tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, FALSE);
pixel_region_init (&destPR, new_tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, TRUE);
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++)
{
for (col = 0; col < srcPR.w; col++)
{
int dmval =
DM[(col+offsetx+srcPR.x)&DM_WIDTHMASK]
[(row+offsety+srcPR.y)&DM_HEIGHTMASK];
if (has_alpha)
{
if ((dest[ALPHA_I_PIX] =
(alpha_dither ?
((src[alpha_pix] << 6) > (255 * dmval)) :
(src[alpha_pix] > 127)
) ? 255 : 0)
== 0)
{
goto next_pixel;
}
}
/* get pixel value and index into the cache */
R = (src[red_pix]) >> R_SHIFT;
G = (src[green_pix]) >> G_SHIFT;
B = (src[blue_pix]) >> B_SHIFT;
cachep = &histogram[R*MR + G*MG + B];
/* If we have not seen this color before, find nearest
colormap entry and update the cache */
if (*cachep == 0)
fill_inverse_cmap_rgb (quantobj, histogram, R, G, B);
/* Get the error and modulate it between 0x and 2x according
to the fixed dither matrix, then add it back to the 0x colour
and look up the new histogram entry. To do better fixed
dithering, I believe that we need to be able to find the
closest colour match on the 'other side' of the desired colour,
which is not information which we have cheap access to. */
color = &quantobj->cmap[*cachep - 1];
re = src[red_pix] - color->red;
ge = src[green_pix] - color->green;
be = src[blue_pix] - color->blue;
re = (re * dmval * 2) / 63;
ge = (ge * dmval * 2) / 63;
be = (be * dmval * 2) / 63;
R = (CLAMP0255(color->red + re)) >> R_SHIFT;
G = (CLAMP0255(color->green + ge)) >> G_SHIFT;
B = (CLAMP0255(color->blue + be)) >> B_SHIFT;
cachep = &histogram[R*MR + G*MG + B];
/* If we have not seen this color before, find nearest
colormap entry and update the cache */
if (*cachep == 0)
fill_inverse_cmap_rgb (quantobj, histogram, R, G, B);
/* Now emit the colormap index for this cell, barfbarf */
index_used_count[dest[INDEXED_PIX] = *cachep - 1]++;
next_pixel:
src += srcPR.bytes;
dest += destPR.bytes;
}
}
}
}
1997-11-25 06:05:25 +08:00
static void
median_cut_pass2_nodestruct_dither_rgb (QuantizeObj *quantobj,
Layer *layer,
TileManager *new_tiles)
{
PixelRegion srcPR, destPR;
unsigned char *src, *dest;
int row, col;
int has_alpha;
int alpha_dither = quantobj->want_alpha_dither;
1997-11-25 06:05:25 +08:00
void *pr;
int red_pix = RED_PIX;
int green_pix = GREEN_PIX;
int blue_pix = BLUE_PIX;
int alpha_pix = ALPHA_PIX;
int i;
int lastindex = 0;
int lastred = -1;
int lastgreen = -1;
int lastblue = -1;
int offsetx, offsety;
1997-11-25 06:05:25 +08:00
drawable_offsets (GIMP_DRAWABLE(layer), &offsetx, &offsety);
1997-11-25 06:05:25 +08:00
has_alpha = layer_has_alpha (layer);
pixel_region_init (&srcPR, GIMP_DRAWABLE(layer)->tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, FALSE);
pixel_region_init (&destPR, new_tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, TRUE);
1997-11-25 06:05:25 +08:00
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++)
{
for (col = 0; col < srcPR.w; col++)
{
if ((has_alpha && (alpha_dither ?
((src[alpha_pix] << 6) > (255 * DM[(col+srcPR.x+offsetx)&DM_WIDTHMASK][(row+srcPR.y+offsety)&DM_HEIGHTMASK])) :
(src[alpha_pix] > 127)))
1997-11-25 06:05:25 +08:00
|| !has_alpha)
{
if ((lastred == src[red_pix]) &&
(lastgreen == src[green_pix]) &&
(lastblue == src[blue_pix]))
{
/* same pixel colour as last time */
dest[INDEXED_PIX] = lastindex;
if (has_alpha)
dest[ALPHA_I_PIX] = 255;
}
else
{
for (i = 0 ;
i < quantobj->actual_number_of_colors;
i++)
{
if (
(quantobj->cmap[i].red == src[red_pix]) &&
(quantobj->cmap[i].green == src[green_pix]) &&
(quantobj->cmap[i].blue == src[blue_pix])
)
{
lastred = src[red_pix];
lastgreen = src[green_pix];
lastblue = src[blue_pix];
lastindex = i;
goto got_colour;
}
}
configure.in removed tips files, AC_SUBST GIMP_PLUGINS and GIMP_MODULES so * configure.in * Makefile.am: removed tips files, AC_SUBST GIMP_PLUGINS and GIMP_MODULES so you can easily skip those parts of the build * acinclude.m4 * config.sub * config.guess * ltconfig * ltmain.sh: libtool 1.3.2 * app/fileops.c: shuffle #includes to avoid warning about MIN and MAX [ The following is a big i18n patch from David Monniaux <david.monniaux@ens.fr> ] * tips/gimp_conseils.fr.txt * tips/gimp_tips.txt * tips/Makefile.am * configure.in: moved tips to separate dir * po-plugins: new dir for plug-in translation files * configure.in: add po-plugins dir and POTFILES processing * app/boundary.c * app/brightness_contrast.c * app/by_color_select.c * app/color_balance.c * app/convert.c * app/curves.c * app/free_select.c * app/gdisplay.c * app/gimpimage.c * app/gimpunit.c * app/gradient.c * app/gradient_select.c * app/install.c * app/session.c: various i18n tweaks * app/tips_dialog.c: localize tips filename * libgimp/gimpunit.c * libgimp/gimpunitmenu.c: #include "config.h" * plug-ins/CEL * plug-ins/CML_explorer * plug-ins/Lighting * plug-ins/apply_lens * plug-ins/autostretch_hsv * plug-ins/blur * plug-ins/bmp * plug-ins/borderaverage * plug-ins/bumpmap * plug-ins/bz2 * plug-ins/checkerboard * plug-ins/colorify * plug-ins/compose * plug-ins/convmatrix * plug-ins/cubism * plug-ins/depthmerge * plug-ins/destripe * plug-ins/gif * plug-ins/gifload * plug-ins/jpeg * plug-ins/mail * plug-ins/oilify * plug-ins/png * plug-ins/print * plug-ins/ps * plug-ins/xbm * plug-ins/xpm * plug-ins/xwd: plug-in i18n stuff -Yosh
1999-05-30 00:35:47 +08:00
g_error ("Non-existant colour was expected to "
"be in non-destructive colourmap.");
1997-11-25 06:05:25 +08:00
got_colour:
dest[INDEXED_PIX] = lastindex;
if (has_alpha)
dest[ALPHA_I_PIX] = 255;
}
}
else
{ /* have alpha, and transparent */
dest[ALPHA_I_PIX] = 0;
}
src += srcPR.bytes;
dest += destPR.bytes;
}
}
}
}
/*
* Initialize the error-limiting transfer function (lookup table).
* The raw F-S error computation can potentially compute error values of up to
* +- MAXJSAMPLE. But we want the maximum correction applied to a pixel to be
* much less, otherwise obviously wrong pixels will be created. (Typical
* effects include weird fringes at color-area boundaries, isolated bright
* pixels in a dark area, etc.) The standard advice for avoiding this problem
* is to ensure that the "corners" of the color cube are allocated as output
* colors; then repeated errors in the same direction cannot cause cascading
* error buildup. However, that only prevents the error from getting
* completely out of hand; Aaron Giles reports that error limiting improves
* the results even with corner colors allocated.
* A simple clamping of the error values to about +- MAXJSAMPLE/8 works pretty
* well, but the smoother transfer function used below is even better. Thanks
* to Aaron Giles for this idea.
*/
static int *
init_error_limit (const int error_freedom)
1997-11-25 06:05:25 +08:00
/* Allocate and fill in the error_limiter table */
{
int *table;
int in, out;
/* #define STEPSIZE 16 */
/* #define STEPSIZE 200 */
table = g_malloc (sizeof (int) * (255 * 2 + 1));
table += 255; /* so we can index -255 ... +255 */
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if (error_freedom == 0)
1997-11-25 06:05:25 +08:00
{
/* Coarse function, much bleeding. */
1997-11-25 06:05:25 +08:00
const int STEPSIZE = 190;
for (in = 0; in < STEPSIZE; in++)
{
table[in] = in;
table[-in] = -in;
}
for (; in <= 255; in++)
{
table[in] = STEPSIZE;
table[-in] = -STEPSIZE;
}
return (table);
1997-11-25 06:05:25 +08:00
}
else
1997-11-25 06:05:25 +08:00
{
/* Smooth function, bleeding more constrained */
1997-11-25 06:05:25 +08:00
const int STEPSIZE = 24;
1997-11-25 06:05:25 +08:00
/* Map errors 1:1 up to +- STEPSIZE */
out = 0;
for (in = 0; in < STEPSIZE; in++, out++)
{
table[in] = out;
table[-in] = -out;
}
/* Map errors 1:2 up to +- 3*STEPSIZE */
for (; in < STEPSIZE*3; in++, out += (in&1) ? 0 : 1)
{
table[in] = out;
table[-in] = -out;
}
/* Clamp the rest to final out value (which is STEPSIZE*2) */
for (; in <= 255; in++)
{
table[in] = out;
table[-in] = -out;
}
return table;
}
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}
/*
* Map some rows of pixels to the output colormapped representation.
* Perform floyd-steinberg dithering.
*/
static void
median_cut_pass2_fs_dither_gray (QuantizeObj *quantobj,
Layer *layer,
TileManager *new_tiles)
{
PixelRegion srcPR, destPR;
Histogram histogram = quantobj->histogram;
ColorFreq *cachep;
Color *color;
int *error_limiter;
const short *fs_err1, *fs_err2;
const short *fs_err3, *fs_err4;
const short *range_limiter;
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int src_bytes, dest_bytes;
unsigned char *src, *dest;
unsigned char *src_buf, *dest_buf;
int *next_row, *prev_row;
int *nr, *pr;
int *tmp;
int pixel;
int pixele;
int row, col;
int index;
int step_dest, step_src;
int odd_row;
int has_alpha;
int offsetx, offsety;
int alpha_dither = quantobj->want_alpha_dither;
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int width, height;
unsigned long* index_used_count = quantobj->index_used_count;
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drawable_offsets (GIMP_DRAWABLE(layer), &offsetx, &offsety);
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has_alpha = layer_has_alpha (layer);
pixel_region_init (&srcPR, GIMP_DRAWABLE(layer)->tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, FALSE);
pixel_region_init (&destPR, new_tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, TRUE);
src_bytes = GIMP_DRAWABLE(layer)->bytes;
dest_bytes = new_tiles->bpp;
width = GIMP_DRAWABLE(layer)->width;
height = GIMP_DRAWABLE(layer)->height;
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error_limiter = init_error_limit (quantobj->error_freedom);
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range_limiter = range_array + 256;
src_buf = g_malloc (width * src_bytes);
dest_buf = g_malloc (width * dest_bytes);
next_row = g_malloc (sizeof (int) * (width + 2));
prev_row = g_malloc (sizeof (int) * (width + 2));
memset (prev_row, 0, (width + 2) * sizeof (int));
fs_err1 = floyd_steinberg_error1 + 511;
fs_err2 = floyd_steinberg_error2 + 511;
fs_err3 = floyd_steinberg_error3 + 511;
fs_err4 = floyd_steinberg_error4 + 511;
odd_row = 0;
for (row = 0; row < height; row++)
{
pixel_region_get_row (&srcPR, 0, row, width, src_buf, 1);
src = src_buf;
dest = dest_buf;
nr = next_row;
pr = prev_row + 1;
if (odd_row)
{
step_dest = -dest_bytes;
step_src = -src_bytes;
src += (width * src_bytes) - src_bytes;
dest += (width * dest_bytes) - dest_bytes;
nr += width + 1;
pr += width;
*(nr - 1) = 0;
}
else
{
step_dest = dest_bytes;
step_src = src_bytes;
*(nr + 1) = 0;
}
*nr = 0;
for (col = 0; col < width; col++)
{
pixel = range_limiter[src[GRAY_PIX] + error_limiter[*pr]];
cachep = &histogram[pixel];
/* If we have not seen this color before, find nearest colormap entry */
/* and update the cache */
if (*cachep == 0)
fill_inverse_cmap_gray (quantobj, histogram, pixel);
if (has_alpha)
{
if (odd_row)
{
if ((dest[ALPHA_I_PIX] =
(alpha_dither ?
((src[ALPHA_G_PIX] << 6) > (255 * DM[((width-col)+offsetx-1)&DM_WIDTHMASK][(row+offsety)&DM_HEIGHTMASK])) :
(src[ALPHA_G_PIX] > 127)
) ? 255 : 0)
== 0)
{
pr--;
nr--;
*(nr - 1) = 0;
goto next_pixel;
}
}
else
{
if ((dest[ALPHA_I_PIX] =
(alpha_dither ?
((src[ALPHA_G_PIX] << 6) > (255 * DM[(col+offsetx)&DM_WIDTHMASK][(row+offsety)&DM_HEIGHTMASK])) :
(src[ALPHA_G_PIX] > 127)
) ? 255 : 0)
== 0)
{
pr++;
nr++;
*(nr + 1) = 0;
goto next_pixel;
}
}
}
index = *cachep - 1;
index_used_count[dest[INDEXED_PIX] = index]++;
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color = &quantobj->cmap[index];
pixele = pixel - color->red;
if (odd_row)
{
*(--pr) += fs_err1[pixele];
*nr-- += fs_err2[pixele];
*nr += fs_err3[pixele];
*(nr-1) = fs_err4[pixele];
}
else
{
*(++pr) += fs_err1[pixele];
*nr++ += fs_err2[pixele];
*nr += fs_err3[pixele];
*(nr+1) = fs_err4[pixele];
}
next_pixel:
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dest += step_dest;
src += step_src;
}
tmp = next_row;
next_row = prev_row;
prev_row = tmp;
odd_row = !odd_row;
pixel_region_set_row (&destPR, 0, row, width, dest_buf);
}
g_free (error_limiter - 255); /* good lord. */
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g_free (next_row);
g_free (prev_row);
g_free (src_buf);
g_free (dest_buf);
}
static void
median_cut_pass2_rgb_init (QuantizeObj *quantobj)
{
zero_histogram_rgb (quantobj->histogram);
/* Mark all indices as currently unused */
memset (quantobj->index_used_count, 0, 256 * sizeof(unsigned long));
}
static void
median_cut_pass2_gray_init (QuantizeObj *quantobj)
{
zero_histogram_gray (quantobj->histogram);
/* Mark all indices as currently unused */
memset (quantobj->index_used_count, 0, 256 * sizeof(unsigned long));
}
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static void
median_cut_pass2_fs_dither_rgb (QuantizeObj *quantobj,
Layer *layer,
TileManager *new_tiles)
{
PixelRegion srcPR, destPR;
Histogram histogram = quantobj->histogram;
ColorFreq *cachep;
Color *color;
int *error_limiter;
const short *fs_err1, *fs_err2;
const short *fs_err3, *fs_err4;
const short *range_limiter;
1997-11-25 06:05:25 +08:00
int src_bytes, dest_bytes;
unsigned char *src, *dest;
unsigned char *src_buf, *dest_buf;
int *red_n_row, *red_p_row;
int *grn_n_row, *grn_p_row;
int *blu_n_row, *blu_p_row;
int *rnr, *rpr;
int *gnr, *gpr;
int *bnr, *bpr;
int *tmp;
int r, g, b;
int re, ge, be;
int row, col;
int index;
int step_dest, step_src;
int odd_row;
int has_alpha;
int width, height;
int red_pix = RED_PIX;
int green_pix = GREEN_PIX;
int blue_pix = BLUE_PIX;
int alpha_pix = ALPHA_PIX;
int offsetx, offsety;
int alpha_dither = quantobj->want_alpha_dither;
unsigned long *index_used_count = quantobj->index_used_count;
drawable_offsets (GIMP_DRAWABLE(layer), &offsetx, &offsety);
1997-11-25 06:05:25 +08:00
/* In the case of web/mono palettes, we actually force
* grayscale drawables through the rgb pass2 functions
*/
if (drawable_gray (GIMP_DRAWABLE(layer)))
1997-11-25 06:05:25 +08:00
red_pix = green_pix = blue_pix = GRAY_PIX;
has_alpha = layer_has_alpha (layer);
pixel_region_init (&srcPR, GIMP_DRAWABLE(layer)->tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, FALSE);
pixel_region_init (&destPR, new_tiles, 0, 0, GIMP_DRAWABLE(layer)->width, GIMP_DRAWABLE(layer)->height, TRUE);
src_bytes = GIMP_DRAWABLE(layer)->bytes;
dest_bytes = new_tiles->bpp;
width = GIMP_DRAWABLE(layer)->width;
height = GIMP_DRAWABLE(layer)->height;
1997-11-25 06:05:25 +08:00
error_limiter = init_error_limit (quantobj->error_freedom);
1997-11-25 06:05:25 +08:00
range_limiter = range_array + 256;
src_buf = g_malloc (width * src_bytes);
dest_buf = g_malloc (width * dest_bytes);
red_n_row = g_malloc (sizeof (int) * (width + 2));
red_p_row = g_malloc (sizeof (int) * (width + 2));
grn_n_row = g_malloc (sizeof (int) * (width + 2));
grn_p_row = g_malloc (sizeof (int) * (width + 2));
blu_n_row = g_malloc (sizeof (int) * (width + 2));
blu_p_row = g_malloc (sizeof (int) * (width + 2));
memset (red_p_row, 0, (width + 2) * sizeof (int));
memset (grn_p_row, 0, (width + 2) * sizeof (int));
memset (blu_p_row, 0, (width + 2) * sizeof (int));
fs_err1 = floyd_steinberg_error1 + 511;
fs_err2 = floyd_steinberg_error2 + 511;
fs_err3 = floyd_steinberg_error3 + 511;
fs_err4 = floyd_steinberg_error4 + 511;
odd_row = 0;
for (row = 0; row < height; row++)
{
pixel_region_get_row (&srcPR, 0, row, width, src_buf, 1);
src = src_buf;
dest = dest_buf;
rnr = red_n_row;
gnr = grn_n_row;
bnr = blu_n_row;
rpr = red_p_row + 1;
gpr = grn_p_row + 1;
bpr = blu_p_row + 1;
if (odd_row)
{
step_dest = -dest_bytes;
step_src = -src_bytes;
src += (width * src_bytes) - src_bytes;
dest += (width * dest_bytes) - dest_bytes;
rnr += width + 1;
gnr += width + 1;
bnr += width + 1;
rpr += width;
gpr += width;
bpr += width;
*(rnr - 1) = *(gnr - 1) = *(bnr - 1) = 0;
}
else
{
step_dest = dest_bytes;
step_src = src_bytes;
*(rnr + 1) = *(gnr + 1) = *(bnr + 1) = 0;
}
*rnr = *gnr = *bnr = 0;
for (col = 0; col < width; col++)
{
if (has_alpha)
{
if (odd_row)
{
/* I get goosebumps over this expression. */
if ((dest[ALPHA_I_PIX] =
(alpha_dither ?
((src[alpha_pix] << 6) > (255 * DM[((width-col)+offsetx-1)&DM_WIDTHMASK][(row+offsety)&DM_HEIGHTMASK])) :
(src[alpha_pix] > 127)
) ? 255 : 0)
== 0)
{
rpr--; gpr--; bpr--;
rnr--; gnr--; bnr--;
*(rnr - 1) = *(gnr - 1) = *(bnr - 1) = 0;
goto next_pixel;
}
}
else
{
if ((dest[ALPHA_I_PIX] =
(alpha_dither ?
((src[alpha_pix] << 6) > (255 * DM[(col+offsetx)&DM_WIDTHMASK][(row+offsety)&DM_HEIGHTMASK])) :
(src[alpha_pix] > 127)
) ? 255 : 0)
== 0)
{
rpr++; gpr++; bpr++;
rnr++; gnr++; bnr++;
*(rnr + 1) = *(gnr + 1) = *(bnr + 1) = 0;
goto next_pixel;
}
}
}
1997-11-25 06:05:25 +08:00
r = range_limiter[src[red_pix] + error_limiter[*rpr]];
g = range_limiter[src[green_pix] + error_limiter[*gpr]];
b = range_limiter[src[blue_pix] + error_limiter[*bpr]];
re = r >> R_SHIFT;
ge = g >> G_SHIFT;
be = b >> B_SHIFT;
cachep = &histogram[re*MR + ge*MG + be];
/* If we have not seen this color before, find nearest
colormap entry and update the cache */
1997-11-25 06:05:25 +08:00
if (*cachep == 0)
fill_inverse_cmap_rgb (quantobj, histogram, re, ge, be);
1997-11-25 06:05:25 +08:00
index = *cachep - 1;
index_used_count[index]++;
1997-11-25 06:05:25 +08:00
dest[INDEXED_PIX] = index;
1997-11-25 06:05:25 +08:00
color = &quantobj->cmap[index];
re = r - color->red;
ge = g - color->green;
be = b - color->blue;
if (odd_row)
{
*(--rpr) += fs_err1[re];
*(--gpr) += fs_err1[ge];
*(--bpr) += fs_err1[be];
*rnr-- += fs_err2[re];
*gnr-- += fs_err2[ge];
*bnr-- += fs_err2[be];
*rnr += fs_err3[re];
*gnr += fs_err3[ge];
*bnr += fs_err3[be];
*(rnr-1) = fs_err4[re];
*(gnr-1) = fs_err4[ge];
*(bnr-1) = fs_err4[be];
}
else
{
*(++rpr) += fs_err1[re];
*(++gpr) += fs_err1[ge];
*(++bpr) += fs_err1[be];
*rnr++ += fs_err2[re];
*gnr++ += fs_err2[ge];
*bnr++ += fs_err2[be];
*rnr += fs_err3[re];
*gnr += fs_err3[ge];
*bnr += fs_err3[be];
*(rnr+1) = fs_err4[re];
*(gnr+1) = fs_err4[ge];
*(bnr+1) = fs_err4[be];
}
next_pixel:
1997-11-25 06:05:25 +08:00
dest += step_dest;
src += step_src;
}
tmp = red_n_row;
red_n_row = red_p_row;
red_p_row = tmp;
tmp = grn_n_row;
grn_n_row = grn_p_row;
grn_p_row = tmp;
tmp = blu_n_row;
blu_n_row = blu_p_row;
blu_p_row = tmp;
odd_row = !odd_row;
pixel_region_set_row (&destPR, 0, row, width, dest_buf);
}
g_free (error_limiter - 255);
g_free (red_n_row);
g_free (red_p_row);
g_free (grn_n_row);
g_free (grn_p_row);
g_free (blu_n_row);
g_free (blu_p_row);
g_free (src_buf);
g_free (dest_buf);
}
static void
delete_median_cut (QuantizeObj *quantobj)
{
g_free (quantobj->histogram);
g_free (quantobj);
}
/**************************************************************/
static QuantizeObj*
initialize_median_cut (int type,
int num_colors,
ConvertDitherType dither_type,
ConvertPaletteType palette_type,
int want_alpha_dither)
1997-11-25 06:05:25 +08:00
{
QuantizeObj * quantobj;
/* Initialize the data structures */
quantobj = g_malloc (sizeof (QuantizeObj));
if (type == GRAY && palette_type == MAKE_PALETTE)
quantobj->histogram = g_malloc (sizeof (ColorFreq) * 256);
else
quantobj->histogram = g_malloc (sizeof (ColorFreq) *
HIST_R_ELEMS *
HIST_G_ELEMS *
HIST_B_ELEMS);
quantobj->desired_number_of_colors = num_colors;
quantobj->want_alpha_dither = want_alpha_dither;
1997-11-25 06:05:25 +08:00
switch (type)
{
case GRAY:
switch (palette_type)
{
case MAKE_PALETTE:
quantobj->first_pass = median_cut_pass1_gray;
break;
case WEB_PALETTE:
quantobj->first_pass = webpal_pass1;
break;
case CUSTOM_PALETTE:
quantobj->first_pass = custompal_pass1;
needs_quantize=TRUE;
break;
1997-11-25 06:05:25 +08:00
case MONO_PALETTE:
default:
quantobj->first_pass = monopal_pass1;
}
if (palette_type == WEB_PALETTE ||
palette_type == MONO_PALETTE || palette_type == CUSTOM_PALETTE)
1997-11-25 06:05:25 +08:00
switch (dither_type)
{
case NODESTRUCT_DITHER:
default:
g_warning("Uh-oh, bad dither type, W1");
case NO_DITHER:
quantobj->second_pass_init = median_cut_pass2_rgb_init;
1997-11-25 06:05:25 +08:00
quantobj->second_pass = median_cut_pass2_no_dither_rgb;
break;
case FS_DITHER:
quantobj->error_freedom = 0;
quantobj->second_pass_init = median_cut_pass2_rgb_init;
quantobj->second_pass = median_cut_pass2_fs_dither_rgb;
break;
case FSLOWBLEED_DITHER:
quantobj->error_freedom = 1;
quantobj->second_pass_init = median_cut_pass2_rgb_init;
1997-11-25 06:05:25 +08:00
quantobj->second_pass = median_cut_pass2_fs_dither_rgb;
break;
case FIXED_DITHER:
quantobj->second_pass_init = median_cut_pass2_rgb_init;
quantobj->second_pass = median_cut_pass2_fixed_dither_rgb;
break;
1997-11-25 06:05:25 +08:00
}
else
switch (dither_type)
{
case NODESTRUCT_DITHER:
default:
g_warning("Uh-oh, bad dither type, W2");
case NO_DITHER:
quantobj->second_pass_init = median_cut_pass2_gray_init;
1997-11-25 06:05:25 +08:00
quantobj->second_pass = median_cut_pass2_no_dither_gray;
break;
case FS_DITHER:
quantobj->error_freedom = 0;
quantobj->second_pass_init = median_cut_pass2_gray_init;
1997-11-25 06:05:25 +08:00
quantobj->second_pass = median_cut_pass2_fs_dither_gray;
break;
case FSLOWBLEED_DITHER:
quantobj->error_freedom = 1;
quantobj->second_pass_init = median_cut_pass2_gray_init;
quantobj->second_pass = median_cut_pass2_fs_dither_gray;
break;
case FIXED_DITHER:
quantobj->second_pass_init = median_cut_pass2_gray_init;
quantobj->second_pass = median_cut_pass2_fixed_dither_gray;
break;
1997-11-25 06:05:25 +08:00
}
break;
case RGB:
switch (palette_type)
{
case MAKE_PALETTE:
quantobj->first_pass = median_cut_pass1_rgb;
break;
case WEB_PALETTE:
quantobj->first_pass = webpal_pass1;
needs_quantize=TRUE;
break;
case CUSTOM_PALETTE:
quantobj->first_pass = custompal_pass1;
needs_quantize=TRUE;
1997-11-25 06:05:25 +08:00
break;
case MONO_PALETTE:
default:
quantobj->first_pass = monopal_pass1;
}
switch (dither_type)
{
case NO_DITHER:
quantobj->second_pass_init = median_cut_pass2_rgb_init;
1997-11-25 06:05:25 +08:00
quantobj->second_pass = median_cut_pass2_no_dither_rgb;
break;
case FS_DITHER:
quantobj->error_freedom = 0;
quantobj->second_pass_init = median_cut_pass2_rgb_init;
quantobj->second_pass = median_cut_pass2_fs_dither_rgb;
break;
case FSLOWBLEED_DITHER:
quantobj->error_freedom = 1;
quantobj->second_pass_init = median_cut_pass2_rgb_init;
1997-11-25 06:05:25 +08:00
quantobj->second_pass = median_cut_pass2_fs_dither_rgb;
break;
case NODESTRUCT_DITHER:
quantobj->second_pass_init = NULL;
1997-11-25 06:05:25 +08:00
quantobj->second_pass = median_cut_pass2_nodestruct_dither_rgb;
break;
case FIXED_DITHER:
quantobj->second_pass_init = median_cut_pass2_rgb_init;
quantobj->second_pass = median_cut_pass2_fixed_dither_rgb;
break;
1997-11-25 06:05:25 +08:00
}
break;
}
quantobj->delete_func = delete_median_cut;
return quantobj;
}