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resolution support for the BMP plug-in 

--Sven
This commit is contained in:
Sven Neumann 1999-12-19 12:20:38 +00:00
parent 184cd0e3a1
commit 3425e135ec
4 changed files with 205 additions and 72 deletions
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8
ChangeLog
View File

@ -1,3 +1,11 @@
Sun Dec 19 13:16:51 CET 1999 Sven Neumann <sven@gimp.org>
* plug-ins/bmp/bmp.c
* plug-ins/bmp/bmpread.c
* plug-ins/bmp/bmpwrite.c:
Applied a patch from muppet <scott@asofyet.org> that adds resolution
support for the BMP plug-in. Did some code cleanup while I was on it.
Sat Dec 18 20:40:44 CET 1999 Sven Neumann <sven@gimp.org>
* plug-ins/imagemap/imap_about.c

21
plug-ins/bmp/bmp.c
View File

@ -23,6 +23,7 @@
/* 16 and 32 bit images */
/* 28.11.1998 Bug in RLE-read-padding */
/* fixed. */
/* 19.12.1999 Resolution support added */
/*
* The GIMP -- an image manipulation program
@ -180,7 +181,7 @@ run (char *name,
break;
}
image_ID = ReadBMP(param[1].data.d_string);
image_ID = ReadBMP (param[1].data.d_string);
if (image_ID != -1)
{
@ -254,17 +255,21 @@ run (char *name,
}
}
gint32 ToL(guchar *puffer)
gint32
ToL (guchar *puffer)
{
return(puffer[0] | puffer[1]<<8 | puffer[2]<<16 | puffer[3]<<24);
return (puffer[0] | puffer[1]<<8 | puffer[2]<<16 | puffer[3]<<24);
}
gint16 ToS(guchar *puffer)
gint16
ToS (guchar *puffer)
{
return(puffer[0] | puffer[1]<<8);
return (puffer[0] | puffer[1]<<8);
}
void FromL(gint32 wert, guchar *bopuffer)
void
FromL (gint32 wert,
guchar *bopuffer)
{
bopuffer[0]=(wert & 0x000000ff)>>0x00;
bopuffer[1]=(wert & 0x0000ff00)>>0x08;
@ -272,7 +277,9 @@ void FromL(gint32 wert, guchar *bopuffer)
bopuffer[3]=(wert & 0xff000000)>>0x18;
}
void FromS(gint16 wert, guchar *bopuffer)
void
FromS (gint16 wert,
guchar *bopuffer)
{
bopuffer[0]=(wert & 0x00ff)>>0x00;
bopuffer[1]=(wert & 0xff00)>>0x08;

91
plug-ins/bmp/bmpread.c
View File

@ -2,6 +2,26 @@
/* except OS2 bitmaps (wrong colors) */
/* Alexander.Schulz@stud.uni-karlsruhe.de */
/*
* 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.
* ----------------------------------------------------------------------------
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
@ -11,8 +31,9 @@
#include "bmp.h"
#include "libgimp/stdplugins-intl.h"
gint32 ReadBMP (name)
char *name;
gint32
ReadBMP (char *name)
{
FILE *fd;
char *temp_buf;
@ -20,6 +41,7 @@ gint32 ReadBMP (name)
int ColormapSize, SpeicherZeile, Maps, Grey;
unsigned char ColorMap[256][3];
guchar puffer[50];
gint32 image_ID;
if (interactive_bmp)
{
@ -141,18 +163,50 @@ gint32 ReadBMP (name)
#endif
/* Get the Image and return the ID or -1 on error*/
image_ID = ReadImage (fd,
Bitmap_Head.biWidth,
Bitmap_Head.biHeight,
ColorMap,
Bitmap_Head.biClrUsed,
Bitmap_Head.biBitCnt,
Bitmap_Head.biCompr,
SpeicherZeile,
Grey);
return(ReadImage(fd, Bitmap_Head.biWidth, Bitmap_Head.biHeight, ColorMap,
Bitmap_Head.biClrUsed, Bitmap_Head.biBitCnt, Bitmap_Head.biCompr, SpeicherZeile, Grey));
#ifdef GIMP_HAVE_RESOLUTION_INFO
{
/* quick hack by the muppet, scott@asofyet.org, 19 dec 1999 */
double xresolution;
double yresolution;
/*
* xresolution and yresolution are in dots per inch.
* the BMP spec says that biXPels and biYPels are in
* pixels per meter as long ints (actually, "DWORDS").
* this means we've lost some accuracy in the numbers.
* typically, the dots per inch settings on BMPs will
* be integer numbers of dots per inch, which is freaky
* because they're stored in the BMP as metric. *sigh*
* so, we'll round this off, even though the gimp wants
* a floating point number...
*/
#define LROUND(x) ((long int)((x)+0.5))
xresolution = LROUND((Bitmap_Head.biXPels * 2.54 / 100.0));
yresolution = LROUND((Bitmap_Head.biYPels * 2.54 / 100.0));
#undef LROUND
gimp_image_set_resolution (image_ID, xresolution, yresolution);
}
#endif /* GIMP_HAVE_RESOLUTION_INFO */
return (image_ID);
}
gint ReadColorMap (fd, buffer, number, size, grey)
FILE *fd;
int number;
unsigned char buffer[256][3];
int size;
int *grey;
gint
ReadColorMap (FILE *fd,
unsigned char buffer[256][3],
int number,
int size,
int *grey)
{
int i;
unsigned char rgb[4];
@ -183,11 +237,16 @@ gint ReadColorMap (fd, buffer, number, size, grey)
return(0);
}
Image ReadImage (fd, len, height, cmap, ncols, bpp, compression, spzeile, grey)
FILE *fd;
int len, height;
unsigned char cmap[256][3];
int ncols, bpp, compression, spzeile, grey;
Image
ReadImage (FILE *fd,
int len,
int height,
unsigned char cmap[256][3],
int ncols,
int bpp,
int compression,
int spzeile,
int grey)
{
char *name_buf;
unsigned char v,wieviel;
@ -372,6 +431,6 @@ Image ReadImage (fd, len, height, cmap, ncols, bpp, compression, spzeile, grey)
gimp_drawable_flush(drawable);
gimp_drawable_detach(drawable);
g_free(dest);
return(image);
return (image);
}

123
plug-ins/bmp/bmpwrite.c
View File

@ -7,6 +7,26 @@
/* Alexander.Schulz@stud.uni-karlsruhe.de */
/*
* 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.
* ----------------------------------------------------------------------------
*/
#include "config.h"
#include <stdio.h>
@ -39,18 +59,15 @@ static BMPSaveInterface gsint =
int encoded = 0;
static gint save_dialog ();
static void save_close_callback (GtkWidget *widget,
gpointer data);
static void save_ok_callback (GtkWidget *widget,
gpointer data);
static void save_toggle_update (GtkWidget *widget,
gpointer data);
static gint save_dialog (void);
static void save_close_callback (GtkWidget *widget, gpointer data);
static void save_ok_callback (GtkWidget *widget, gpointer data);
static void save_toggle_update (GtkWidget *widget, gpointer data);
gint
WriteBMP (filename,image,drawable_ID)
char *filename;
gint32 image,drawable_ID;
WriteBMP (char *filename,
gint32 image,
gint32 drawable_ID)
{
FILE *outfile;
int Red[MAXCOLORS];
@ -127,13 +144,14 @@ WriteBMP (filename,image,drawable_ID)
}
/* Perhaps someone wants RLE encoded Bitmaps */
encoded = 0;
if (((BitsPerPixel==8) || (BitsPerPixel==4)) && interactive_bmp) {if (! save_dialog ()) {return -1;}}
if ((BitsPerPixel == 8 || BitsPerPixel == 4) && interactive_bmp)
{
if (! save_dialog ())
return -1;
}
/* Let's take some file */
outfile = fopen (filename, "wb");
if (!outfile)
{
@ -181,10 +199,35 @@ WriteBMP (filename,image,drawable_ID)
else if (BitsPerPixel==4) Bitmap_Head.biCompr=2;
else Bitmap_Head.biCompr=0;
Bitmap_Head.biSizeIm=SpZeile*rows;
Bitmap_Head.biXPels=1;
Bitmap_Head.biYPels=1;
if (BitsPerPixel<24) Bitmap_Head.biClrUsed=colors;
else Bitmap_Head.biClrUsed=0;
#ifdef GIMP_HAVE_RESOLUTION_INFO
{
double xresolution;
double yresolution;
gimp_image_get_resolution (image, &xresolution, &yresolution);
if (xresolution > 1e-5 && yresolution > 1e-5) {
/*
* xresolution and yresolution are in dots per inch.
* the BMP spec says that biXPels and biYPels are in
* pixels per meter as long ints (actually, "DWORDS"),
* so...
* n dots inch 100 cm m dots
* ------ * ------- * ------ = ------
* inch 2.54 cm m inch
*/
Bitmap_Head.biXPels = (long int) xresolution * 100.0 / 2.54;
Bitmap_Head.biYPels = (long int) yresolution * 100.0 / 2.54;
}
}
#else /* GIMP_HAVE_RESOLUTION_INFO */
Bitmap_Head.biXPels = 1;
Bitmap_Head.biYPels = 1;
#endif /* GIMP_HAVE_RESOLUTION_INFO */
if (BitsPerPixel<24)
Bitmap_Head.biClrUsed=colors;
else
Bitmap_Head.biClrUsed=0;
Bitmap_Head.biClrImp=Bitmap_Head.biClrUsed;
#ifdef DEBUG
@ -230,8 +273,12 @@ WriteBMP (filename,image,drawable_ID)
return TRUE;
}
void WriteColorMap(FILE *f, int red[MAXCOLORS], int green[MAXCOLORS],
int blue[MAXCOLORS], int size)
void
WriteColorMap (FILE *f,
int red[MAXCOLORS],
int green[MAXCOLORS],
int blue[MAXCOLORS],
int size)
{
char trgb[4];
int i;
@ -247,14 +294,20 @@ void WriteColorMap(FILE *f, int red[MAXCOLORS], int green[MAXCOLORS],
}
}
void WriteImage(f, src, width, height, encoded, channels, bpp, spzeile, MapSize)
FILE *f;
guchar *src;
int width,height,encoded,channels,bpp,spzeile,MapSize;
void
WriteImage (FILE *f,
guchar *src,
int width,
int height,
int encoded,
int channels,
int bpp,
int spzeile,
int MapSize)
{
guchar buf[16]={0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0};
guchar puffer[8];
guchar *temp,v,g;
guchar *temp,v;
guchar *Zeile,*ketten;
int xpos,ypos,i,j,rowstride,laenge,thiswidth;
int breite, n, k;
@ -432,11 +485,10 @@ save_dialog ()
{
GtkWidget *dlg;
GtkWidget *button;
GtkWidget *hbbox;
GtkWidget *toggle;
GtkWidget *frame;
GtkWidget *vbox;
gchar **argv;
gint argc;
dlg = gtk_dialog_new ();
gtk_window_set_title (GTK_WINDOW (dlg), _("Save as BMP"));
@ -446,12 +498,19 @@ save_dialog ()
NULL);
/* Action area */
gtk_container_set_border_width (GTK_CONTAINER (GTK_DIALOG (dlg)->action_area), 2);
gtk_box_set_homogeneous (GTK_BOX (GTK_DIALOG (dlg)->action_area), FALSE);
hbbox = gtk_hbutton_box_new ();
gtk_button_box_set_spacing (GTK_BUTTON_BOX (hbbox), 4);
gtk_box_pack_end (GTK_BOX (GTK_DIALOG (dlg)->action_area), hbbox, FALSE, FALSE, 0);
gtk_widget_show (hbbox);
button = gtk_button_new_with_label (_("OK"));
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) save_ok_callback,
dlg);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->action_area), button, TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (hbbox), button, FALSE, FALSE, 0);
gtk_widget_grab_default (button);
gtk_widget_show (button);
@ -460,16 +519,16 @@ save_dialog ()
gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) gtk_widget_destroy,
GTK_OBJECT (dlg));
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->action_area), button, TRUE, TRUE, 0);
gtk_box_pack_start (GTK_BOX (hbbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
/* parameter settings */
frame = gtk_frame_new (_("Save Options"));
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
gtk_container_border_width (GTK_CONTAINER (frame), 10);
gtk_container_border_width (GTK_CONTAINER (frame), 4);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dlg)->vbox), frame, TRUE, TRUE, 0);
vbox = gtk_vbox_new (FALSE, 5);
gtk_container_border_width (GTK_CONTAINER (vbox), 5);
vbox = gtk_vbox_new (FALSE, 4);
gtk_container_border_width (GTK_CONTAINER (vbox), 4);
gtk_container_add (GTK_CONTAINER (frame), vbox);
toggle = gtk_check_button_new_with_label (_("RLE encoded"));