Source

gd-libgd / src / gd_wbmp.c

Full commit
pierre 1cdea74 

pierre dd92c2b 
pierre 1cdea74 





pierre dd92c2b 
pierre 1cdea74 
pierre dd92c2b 
pierre 1cdea74 
pierre 0c29f6a 
pierre 1cdea74 


pierre 0c29f6a 
pierre 1cdea74 
pierre 0c29f6a 
pierre 1cdea74 
pierre 0c29f6a 
pierre 1cdea74 
pierre 0c29f6a 

pierre 1cdea74 

pierre 0c29f6a 
pierre 1cdea74 





pierre 0c29f6a 
pierre 1cdea74 











pierre 0c29f6a 
pierre 1cdea74 
pierre 0c29f6a 
pierre 1cdea74 
pierre dd92c2b 
pierre 1cdea74 

pierre 0c29f6a 
pierre b0243fe 



pierre 22d55c5 
pierre dd92c2b 



pierre 0c29f6a 
pierre dd92c2b 
pierre 0c29f6a 

pierre dd92c2b 
pierre 1cdea74 





pierre dd92c2b 
pierre 1cdea74 

pierre 0c29f6a 

pierre dd92c2b 
pierre 1cdea74 





pierre dd92c2b 
pierre 1cdea74 
pierre dd92c2b 
pierre 0c29f6a 

pierre 1cdea74 








pierre b77f755 
pierre 1cdea74 






scottmac 1b03e9d 




pierre 1cdea74 





pierre dd92c2b 
pierre 1cdea74 




pierre dd92c2b 
pierre 1cdea74 
pierre 0c29f6a 
pierre 1cdea74 




pierre dd92c2b 
pierre 0c29f6a 

pierre dd92c2b 
pierre 1cdea74 


pierre b77f755 
pierre dd92c2b 
pierre 1cdea74 
























pierre dd92c2b 
pierre 1cdea74 







pierre dd92c2b 
pierre 1cdea74 
pierre 0c29f6a 
pierre 1cdea74 
pierre dd92c2b 
pierre 1cdea74 
pierre 0c29f6a 


pierre dd92c2b 
pierre 1cdea74 

pierre b77f755 
pierre dd92c2b 
pierre 1cdea74 


pierre b623f93 
pierre 1cdea74 
pierre 0c29f6a 

pierre b77f755 
pierre 06e39b1 


mattias 286a6ea 

pierre 06e39b1 




pierre dd92c2b 
pierre 1cdea74 

pierre b77f755 
pierre 0c29f6a 
pierre 1cdea74 

pierre b623f93 
pierre 0c29f6a 

pierre dd92c2b 
pierre 1cdea74 

pierre 41825ac 
pierre 1cdea74 
pierre 0c29f6a 
pierre 1cdea74 



pierre b623f93 
pierre 1cdea74 
pierre 0c29f6a 
pierre 41825ac 


/*
   WBMP: Wireless Bitmap Type 0: B/W, Uncompressed Bitmap
   Specification of the WBMP format can be found in the file: 
   SPEC-WAESpec-19990524.pdf
   You can download the WAP specification on: http://www.wapforum.com/ 

   gd_wbmp.c

   Copyright (C) Johan Van den Brande (johan@vandenbrande.com)

   Fixed: gdImageWBMPPtr, gdImageWBMP

   Recoded: gdImageWBMPCtx for use with my wbmp library
   (wbmp library included, but you can find the latest distribution
   at http://www.vandenbrande.com/wbmp)

   Implemented: gdImageCreateFromWBMPCtx, gdImageCreateFromWBMP 

   ---------------------------------------------------------------------------

   Parts of this code are from Maurice Smurlo.


   ** Copyright (C) Maurice Szmurlo --- T-SIT --- January 2000
   ** (Maurice.Szmurlo@info.unicaen.fr)

   ** Permission to use, copy, modify, and distribute this software and its
   ** documentation for any purpose and without fee is hereby granted, provided
   ** that the above copyright notice appear in all copies and that both that
   ** copyright notice and this permission notice appear in supporting
   ** documentation.  This software is provided "as is" without express or
   ** implied warranty.

   ---------------------------------------------------------------------------
   Parts od this code are inspired by  'pbmtowbmp.c' and 'wbmptopbm.c' by 
   Terje Sannum <terje@looplab.com>.
   **
   ** Permission to use, copy, modify, and distribute this software and its
   ** documentation for any purpose and without fee is hereby granted, provided
   ** that the above copyright notice appear in all copies and that both that
   ** copyright notice and this permission notice appear in supporting
   ** documentation.  This software is provided "as is" without express or
   ** implied warranty.
   **
   ---------------------------------------------------------------------------

   Todo:

   gdCreateFromWBMP function for reading WBMP files

   ----------------------------------------------------------------------------
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <gd.h>
#include <gdfonts.h>
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>

#include "wbmp.h"


/* gd_putout
   ** ---------
   ** Wrapper around gdPutC for use with writewbmp
   **
 */
void
gd_putout (int i, void *out)
{
  gdPutC (i, (gdIOCtx *) out);
}


/* gd_getin
   ** --------
   ** Wrapper around gdGetC for use with readwbmp
   **
 */
int
gd_getin (void *in)
{
  return (gdGetC ((gdIOCtx *) in));
}


/*      gdImageWBMPCtx
   **  --------------
   **  Write the image as a wbmp file
   **  Parameters are:
   **  image:  gd image structure;
   **  fg:     the index of the foreground color. any other value will be 
   **          considered as background and will not be written
   **  out:    the stream where to write
 */
BGD_DECLARE(void) gdImageWBMPCtx (gdImagePtr image, int fg, gdIOCtx * out)
{

  int x, y, pos;
  Wbmp *wbmp;


  /* create the WBMP */
  if ((wbmp = createwbmp (gdImageSX (image), gdImageSY (image), WBMP_WHITE)) == NULL)
  {
	fprintf (stderr, "Could not create WBMP\n");
	return;
  }

  /* fill up the WBMP structure */
  pos = 0;
  for (y = 0; y < gdImageSY (image); y++)
    {
      for (x = 0; x < gdImageSX (image); x++)
	{
	  if (gdImageGetPixel (image, x, y) == fg)
	    {
	      wbmp->bitmap[pos] = WBMP_BLACK;
	    }
	  pos++;
	}
    }

  /* write the WBMP to a gd file descriptor */
  if (writewbmp (wbmp, &gd_putout, out))
    fprintf (stderr, "Could not save WBMP\n");
  /* des submitted this bugfix: gdFree the memory. */
  freewbmp (wbmp);
}


/* gdImageCreateFromWBMPCtx
   ** ------------------------
   ** Create a gdImage from a WBMP file input from an gdIOCtx
 */
BGD_DECLARE(gdImagePtr) gdImageCreateFromWBMPCtx (gdIOCtx * infile)
{
  /* FILE *wbmp_file; */
  Wbmp *wbmp;
  gdImagePtr im = NULL;
  int black, white;
  int col, row, pos;

  if (readwbmp (&gd_getin, infile, &wbmp))
    return (NULL);

  if (!(im = gdImageCreate (wbmp->width, wbmp->height)))
    {
      freewbmp (wbmp);
      return (NULL);
    }

  /* create the background color */
  white = gdImageColorAllocate (im, 255, 255, 255);
  /* create foreground color */
  black = gdImageColorAllocate (im, 0, 0, 0);

  /* fill in image (in a wbmp 1 = white/ 0 = black) */
  pos = 0;
  for (row = 0; row < wbmp->height; row++)
    {
      for (col = 0; col < wbmp->width; col++)
	{
	  if (wbmp->bitmap[pos++] == WBMP_WHITE)
	    {
	      gdImageSetPixel (im, col, row, white);
	    }
	  else
	    {
	      gdImageSetPixel (im, col, row, black);
	    }
	}
    }

  freewbmp (wbmp);

  return (im);
}


/* gdImageCreateFromWBMP
   ** ---------------------
 */
BGD_DECLARE(gdImagePtr) gdImageCreateFromWBMP (FILE * inFile)
{
  gdImagePtr im;
  gdIOCtx *in = gdNewFileCtx (inFile);
  im = gdImageCreateFromWBMPCtx (in);
  in->gd_free (in);
  return (im);
}

BGD_DECLARE(gdImagePtr) gdImageCreateFromWBMPPtr (int size, void *data)
{
  gdImagePtr im;
  gdIOCtx *in = gdNewDynamicCtxEx (size, data, 0);
  if(!in)
  	return 0;
  im = gdImageCreateFromWBMPCtx (in);
  in->gd_free (in);
  return im;
}

/* gdImageWBMP
   ** -----------
 */
BGD_DECLARE(void) gdImageWBMP (gdImagePtr im, int fg, FILE * outFile)
{
  gdIOCtx *out = gdNewFileCtx (outFile);
  gdImageWBMPCtx (im, fg, out);
  out->gd_free (out);
}

/* gdImageWBMPPtr
   ** --------------
 */
BGD_DECLARE(void *)
gdImageWBMPPtr (gdImagePtr im, int *size, int fg)
{
  void *rv;
  gdIOCtx *out = gdNewDynamicCtx (2048, NULL);
  gdImageWBMPCtx (im, fg, out);
  rv = gdDPExtractData (out, size);
  out->gd_free (out);
  return rv;
}