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/* bioradtopgm.c - convert a Biorad confocal image into a portable graymap
**
** Copyright (C) 1993 by Oliver Trepte, oliver@fysik4.kth.se
**
** Derived from the pbmplus package,
** Copyright (C) 1989 by 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 <ctype.h>
#include "pgm.h"
#include "nstring.h"
#define BYTE unsigned char
#define BIORAD_HEADER_LENGTH 76
#define BYTE_TO_WORD(lsb,msb) (((BYTE) lsb) + (((BYTE) msb) << 8))
int
main( argc, argv )
int argc;
char* argv[];
{
FILE* ifp;
gray* grayrow;
register gray* gP;
int argn, row, i;
register int col, val, val2;
int rows=0, cols=0, image_num= -1, image_count, byte_word, check_word;
int maxval;
BYTE buf[BIORAD_HEADER_LENGTH];
const char* const usage = "[-image#] [Bioradfile]";
pgm_init( &argc, argv );
argn = 1;
while ( argn < argc && argv[argn][0] == '-' && argv[argn][1] != '\0' )
{
if ( ISDIGIT( argv[argn][1] ))
{
image_num = atoi( (argv[argn]+1) );
}
else
pm_usage( usage );
++argn;
}
if ( argn < argc )
{
ifp = pm_openr( argv[argn] );
++argn;
}
else
ifp = stdin;
if ( argn != argc )
pm_usage( usage );
for ( i = 0; i < BIORAD_HEADER_LENGTH; ++i )
{
val = getc( ifp );
if ( val == EOF )
pm_error( "EOF / read error" );
buf[ i ] = val;
}
cols = BYTE_TO_WORD(buf[0], buf[1]);
rows = BYTE_TO_WORD(buf[2], buf[3]);
image_count = BYTE_TO_WORD(buf[4], buf[5]);
byte_word = BYTE_TO_WORD(buf[14], buf[15]);
check_word = BYTE_TO_WORD(buf[54], buf[55]);
if ( check_word != 12345 )
pm_error( "Not a Biorad file" );
if ( cols <= 0 )
pm_error( "Strange image size, cols = %d", cols);
if ( rows <= 0 )
pm_error( "Strange image size, rows = %d", rows);
if ( image_count <= 0 )
pm_error( "Number of images in file is %d", image_count);
if ( byte_word )
maxval = 255;
else
{
maxval = 65535; /* Perhaps this should be something else */
}
pm_message( "Image size: %d cols, %d rows", cols, rows);
pm_message( "%s",
(byte_word) ? "Byte image (8 bits)" : "Word image (16 bits)");
if ( image_num < 0 )
pm_message( "Input contains %d image%c",
image_count, (image_count > 1) ? 's' : '\0');
else
{
if ( image_num >= image_count )
pm_error( "Cannot extract image %d, input contains only %d image%s",
image_num, image_count, (image_count > 1) ? "s" : "" );
for ( i = (byte_word) ? image_num : image_num*2 ; i > 0 ; --i ) {
for ( row = 0; row < rows; ++row)
for ( col = 0; col < cols; ++col )
{
val = getc( ifp );
if ( val == EOF ) {
pm_error( "EOF / read error" );
}
}
}
pgm_writepgminit( stdout, cols, rows, (gray) maxval, 0 );
grayrow = pgm_allocrow( cols );
for ( row = 0; row < rows; ++row)
{
for ( col = 0, gP = grayrow; col < cols; ++col )
{
val = getc( ifp );
if ( val == EOF )
pm_error( "EOF / read error" );
if (byte_word)
*gP++ = val;
else
{
val2 = getc( ifp );
if ( val2 == EOF )
pm_error( "EOF / read error" );
*gP++ = BYTE_TO_WORD(val, val2);
}
}
pgm_writepgmrow( stdout, grayrow, cols, (gray) maxval, 0 );
}
pm_close( ifp );
pm_close( stdout );
}
exit( 0 );
}
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