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/* pbmtozinc.c - read a PBM image and produce a bitmap file
** in the format used by the Zinc Interface Library (v1.0)
** November 1990.
**
** Author: James Darrell McCauley
** Department of Agricultural Engineering
** Texas A&M University
** College Station, Texas 77843-2117 USA
**
** Copyright (C) 1988 by James Darrell McCauley (jdm5548@diamond.tamu.edu)
** and Jef Poskanzer.
**
** 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.
*/
#include <stdio.h>
#include <string.h>
#include "mallocvar.h"
#include "nstring.h"
#include "pbm.h"
static void
parseCommandLine(int const argc,
const char ** const argv,
const char ** const inputFileNameP) {
if (argc-1 > 0) {
*inputFileNameP = argv[1];
if (argc-1 > 1)
pm_error("To many arguments: %u. "
"The only possible argument is the "
"name of the input file", argc-1);
} else
*inputFileNameP = "-";
}
static const char *
imageName(const char * const inputFileName) {
/*----------------------------------------------------------------------------
The image name to put in the Zinc file, based on the input file name
'inputFileName' ("-" to indicate Standard Input).
Result is newly malloc'ed space that Caller must free.
-----------------------------------------------------------------------------*/
const char * retval;
if (streq(inputFileName, "-"))
pm_asprintf(&retval, "noname");
else {
char * nameBuf;
char * cp;
MALLOCARRAY_NOFAIL(nameBuf, strlen(inputFileName) + 1);
strcpy(nameBuf, inputFileName);
cp = strchr(nameBuf, '.' );
if (cp)
*cp = '\0';
retval = nameBuf;
}
return retval;
}
typedef struct {
unsigned int itemsperline;
uint16_t item;
unsigned int firstitem;
} Packer;
static void
packer_init(Packer * const packerP) {
packerP->itemsperline = 0;
packerP->firstitem = 1;
}
static void
packer_putitem(Packer * const packerP,
unsigned char const hi,
unsigned char const lo) {
if (packerP->firstitem)
packerP->firstitem = 0;
else
putchar(',');
if (packerP->itemsperline == 11) {
putchar('\n');
packerP->itemsperline = 0;
}
if (packerP->itemsperline == 0)
putchar(' ');
++packerP->itemsperline;
printf ("0x%02x%02x", hi, lo);
}
static void
writeRaster(FILE * const ifP,
unsigned int const rows,
unsigned int const cols,
int const format) {
unsigned char * const bitrow = pbm_allocrow_packed(cols + 8);
Packer packer;
unsigned int row;
packer_init(&packer);
bitrow[pbm_packed_bytes(cols+8) -1 ] = 0x00;
for (row = 0; row < rows; ++row) {
unsigned int const itemCt = (cols + 15 ) / 16;
unsigned int i;
pbm_readpbmrow_packed(ifP, bitrow, cols, format);
pbm_cleanrowend_packed(bitrow, cols);
for (i = 0; i < itemCt; ++i) {
packer_putitem(&packer, bitrow[2*i+0], bitrow[2*i+1]);
}
}
pbm_freerow_packed(bitrow);
}
int
main(int argc, const char * argv[]) {
const char * inputFileName;
FILE * ifP;
int rows, cols;
int format;
const char * name;
pm_proginit(&argc, argv);
parseCommandLine(argc, argv, &inputFileName);
ifP = pm_openr(inputFileName);
name = imageName(inputFileName);
pbm_readpbminit(ifP, &cols, &rows, &format);
printf("USHORT %s[] = {\n", name);
printf(" %d\n", cols);
printf(" %d\n", rows);
writeRaster(ifP, rows, cols, format);
printf("};\n");
pm_close(ifP);
pm_strfree(name);
return 0;
}
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