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E.2. PROGRAMMING BOOKS
329
not source code. The software can read images in the TIFF, GIF, BMP, and
PCX le formats. This book blends theory, practice, and enough source code
to make it very worthwhile.
E.2 Programming Books
Jack Purdum, \C Programming Guide," 1983, Que Corp., Indianapolis, In-
diana. ISBN 0-88022-022-8.
You need to start somewhere, and this is where I learned how to program in
C. This book may be hard to nd, but it is very hard to beat as a place to
begin.
Brian W. Kernighan and Dennis M. Ritchie, \The C Programming Lan-
guage," Second Edition, 1988, Prentice-Hall, Englewood Clis, New Jersey.
ISBN 0-13-110362-8.
You can’t program in C without this on the shelf.
Andrew Oram and Steve Talbott, \Managing Projects with make," 1991,
O’Reilly & Associates, Sebastopol, California. ISBN 0-937175-90-0.
This is the best tutorial available on makeles. It is a must if you plan to
write any programs that comprise more than one source code le.
Steve Oualline, \C Elements of Style," 1992, M&T Publishing, San Mateo,
California. ISBN 1-55851- 291-8.
This is a good text on how to write C programs that you and others can
read, understand, and maintain. This is an increasingly important topic in
programming. The text also has a chapter on good style forwriting makeles.
P.J. Plauger, \The Standard C Library," 1992, Prentice-Hall, Englewood
Clis, New Jersey. ISBN 0-13-131509-9.
This text spells out the standard library in great detail. An excellent refer-
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330
APPENDIX E. BIBLIOGRAPHY
ence.
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Appendix F
Source Code Listings
The following sections contain the source code listings for chapters 1 through
19.
F.1 Code Listings for Chapter 1
/*******************************************
*
*
read_image_array(...
*
*
This routine reads the image data from
*
either a tiff or bmp image.
*
********************************************/
read_image_array(file_name, array)
char *file_name;
short **array;
{
int ok = 0;
if(is_a_tiff(file_name)){
read_tiff_image(file_name, array);
ok = 1;
}
331
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332
APPENDIX F. SOURCE CODE LISTINGS
if(is_a_bmp(file_name)){
read_bmp_image(file_name, array);
ok = 1;
}
if(ok == 0){
printf("\nERROR could not read file %s",
file_name);
exit(1);
}
} /* ends read_image_array */
/*******************************************
*
*
write_image_array(...
*
*
This routine writes the image data to
*
either a tiff or bmp image.
*
********************************************/
write_image_array(file_name, array)
char *file_name;
short **array;
{
int ok = 0;
if(is_a_tiff(file_name)){
write_tiff_image(file_name, array);
ok = 1;
}
if(is_a_bmp(file_name)){
write_bmp_image(file_name, array);
ok = 1;
}
if(ok == 0){
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F.1. CODE LISTINGS FOR CHAPTER 1
333
printf("\nERROR could not write file %s",
file_name);
exit(1);
}
} /* ends write_image_array */
/*********************************************
*
*
create_image_file(...
*
*
This function creates an output image file.
*
It uses the input image file as a pattern.
*
*********************************************/
create_image_file(in_name, out_name)
char *in_name, *out_name;
{
struct bmpfileheader
bmp_file_header;
struct bitmapheader
bmheader;
struct tiff_header_struct tiff_file_header;
if(is_a_tiff(in_name)){
read_tiff_header(in_name, &tiff_file_header);
create_allocate_tiff_file(out_name,
&tiff_file_header);
}
if(is_a_bmp(in_name)){
read_bmp_file_header(in_name,
&bmp_file_header);
read_bm_header(in_name, &bmheader);
create_allocate_bmp_file(out_name,
&bmp_file_header,
&bmheader);
}
} /* ends create_image_file */
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334
APPENDIX F. SOURCE CODE LISTINGS
/**********************************************
*
*
get_image_size(...
*
*
This function reads the rows and cols
*
from the header of either a tiff or bmp
*
image file.
*
*
IF IT CANNOT FIND THIS INFORMATION,
*
it returns a ZERO.
*
***********************************************/
int get_image_size(file_name, rows, cols)
char *file_name;
long *cols, *rows;
{
int is_bmp = 0,
is_tiff = 0,
result = 0;
struct bitmapheader bmph;
struct tiff_header_struct tiffh;
if(is_a_bmp(file_name)){
is_bmp = 1;
read_bm_header(file_name, &bmph);
*rows = bmph.height;
*cols = bmph.width;
} /* ends if is_a_bmp */
if(is_a_tiff(file_name)){
is_tiff = 1;
read_tiff_header(file_name, &tiffh);
*rows = tiffh.image_length;
*cols = tiffh.image_width;
} /* ends if is_a_bmp */
if(is_bmp == 1 || is_tiff == 1)
result = 1;
return(result);
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F.1. CODE LISTINGS FOR CHAPTER 1
335
} /* ends get_image_size */
/****************************************
*
*
allocate_image_array(...
*
*
This function allocates memory for
*
a two-dimensional image array.
*
****************************************/
short **allocate_image_array(length, width)
long length, width;
{
int i;
short **the_array;
the_array = malloc(length * sizeof(short *));
for(i=0; i<length; i++){
the_array[i] = malloc(width * sizeof(short ));
if(the_array[i] == ’\0’){
printf("\n\tmalloc of the_image[%d] failed", i);
} /* ends if */
} /* ends loop over i */
return(the_array);
} /* ends allocate_image_array */
/****************************************
*
*
free_image_array(...
336
APPENDIX F. SOURCE CODE LISTINGS
*
*
This function frees up the memory
*
used by a two-dimensional imaage array.
*
****************************************/
int free_image_array(the_array, length)
short **the_array;
long length;
{
int i;
for(i=0; i<length; i++)
free(the_array[i]);
return(1);
} /* ends free_image_array */
/*********************************************
*
*
create_file_if_needed(...
*
*
This function creates an output file
*
if it does not exist. It can create
*
the output file as a tiff or a bmp
*
based on the input file type.
*
*********************************************/
create_file_if_needed(in_name, out_name, array)
char *in_name, *out_name;
short **array;
{
if(is_a_tiff(in_name)){
create_tiff_file_if_needed(in_name,
out_name,
array);
} /* ends if is a tiff */
if(is_a_bmp(in_name)){
create_bmp_file_if_needed(in_name,
out_name,
F.1. CODE LISTINGS FOR CHAPTER 1
337
array);
} /* ends if is a tiff */
} /* ends create_file_if_needed */
/*********************************************
*
*
create_resized_image_file(...
*
*
This function creates an output image file.
*
It uses the input image file as a pattern.
*
*********************************************/
create_resized_image_file(in_name, out_name,
length, width)
char *in_name, *out_name;
long length, width;
{
struct bmpfileheader
bmp_file_header;
struct bitmapheader
bmheader;
struct tiff_header_struct tiff_file_header;
if(is_a_tiff(in_name)){
read_tiff_header(in_name, &tiff_file_header);
tiff_file_header.image_length = length;
tiff_file_header.image_width = width;
create_allocate_tiff_file(out_name,
&tiff_file_header);
}
if(is_a_bmp(in_name)){
read_bmp_file_header(in_name,
&bmp_file_header);
read_bm_header(in_name, &bmheader);
bmheader.height = length;
bmheader.width = width;
create_allocate_bmp_file(out_name,
&bmp_file_header,
&bmheader);
338
APPENDIX F. SOURCE CODE LISTINGS
}
} /* ends create_resided_image_file */
/***********************************************
*
*
does_not_exist(...
*
*
This function checks the disk to see if
*
a file exists. If the file is there this
*
function returns a 0, if it does not exist
*
this function returns a 1.
*
***********************************************/
does_not_exist(file_name)
char file_name[];
{
FILE *image_file;
int result;
result = 1;
image_file = fopen(file_name, "rb");
if(image_file != NULL){
result = 0;
fclose(image_file);
}
return(result);
} /* ends does_not_exist */
/*********************************************
*
*
are_not_same_size(...
*
*
This function checks the rows and cols
*
of two images whose names are passed.
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