#include "pfi.h"
#include <stdio.h>
#include <math.h>
#include <float.h>
#include <assert.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdarg.h>
#include <errno.h>

Include dependency graph for pfi.c:

Defines
#define	SIZE_CHECK(type, size, name) typedef type name[(sizeof (type) == size)*2-1]
#define	PIXEL_PFIS 7
#define	DPRINTF(x)
Functions
	SIZE_CHECK (pfiu32, 4, bar)
	SIZE_CHECK (pfiu16, 2, foobar)
static void	double2pfi (double val, pfiu32 *results)
static int	pfi2double (pfiu32 coded, double res)
static int	numexpect (char *bufp, int expect)
static void	skipwhite (char **pos)
static int	skipcomments (FILE *stream)
static int	pfi_read_internal (FILE , int, int, int, double )
int	pfi_getv (FILE stream, double valp)
int	pfi_putv (FILE *stream, double val)
int	pfi_properties (FILE stream, int rows, int cols, int colors, int *colormodel)
double *	pfi_read (FILE stream, int rows, int cols, int colors, int *colormodel)
int	pfi_write (FILE stream, double buf, int rows, int cols, int colors, int colormodel, char *fname)
DLL_EXPORT int	pfi_read_name (char name, int rows, int cols, int colors, double result)
DLL_EXPORT int	pfi_write_name (char name, double buf, int rows, int cols, int colors, int colormodel)
DLL_EXPORT int	pfi_properties_name (char name, int rows, int cols, int colors, int *colormodel)

Define Documentation

#define DPRINTF ( x )

Definition at line 81 of file pfi.c.

Referenced by double2pfi(), pfi2double(), pfi_getv(), pfi_properties(), pfi_putv(), pfi_read(), and pfi_read_internal().

#define PIXEL_PFIS 7

Definition at line 79 of file pfi.c.

Referenced by pfi_getv(), pfi_putv(), and pfi_read_internal().

#define SIZE_CHECK	(	type,
		size,
		name
	)	typedef type name[(sizeof (type) == size)*2-1]

Definition at line 22 of file pfi.c.

Function Documentation

static void double2pfi	(	double	val,
		pfiu32 *	results
	)		`[static]`

{enumerate}

The raw data consists of two 16 bit and six 32 bit unsigned integers in network byte ordering (byte-swapped on intel systems) per pixel color. We assume exponential notation, like with e in printf. The first two numbers contain the number left from the decimal point and the exponent respectively. For negative values the two- complement form is used. Every of six 32-bit numbers contains 9 digits of the number right from the decimal point, ordered from left to right, so a precision of 54 digits can be achieved.

Calculates 7 pfiu32 values to represent one double.

Parameters:

val	The double value.
results	A reference to an array of 7 pfiu32 that will hold the result.

Definition at line 1051 of file pfi.c.

References DPRINTF.

Referenced by pfi_putv().

static int numexpect	(	char *	bufp,
		int	expect
	)		`[static]`

Checks a string for the correct format of a given number of numbers.

Parameters:

bufp	The string that contains the number we want.
expect	the expected value

Returns:: The expected number or -1 on error.

Definition at line 1184 of file pfi.c.

References skipwhite().

Referenced by pfi_properties().

static int pfi2double	(	pfiu32 *	coded,
		double *	res
	)		`[static]`

Calculates a double from 7 pfiu32 values.

Parameters:

coded	A reference to an array of four pfiu32.
res	A reference to the double representation of the four pfiu32.

Returns:: 0 on succes, -1 on error.

Definition at line 1125 of file pfi.c.

References DPRINTF.

Referenced by pfi_getv().

int pfi_getv	(	FILE *	stream,
		double *	valp
	)

Reads a double value from an open pfi file

Parameters:

stream	The open file.
valp	A reference to the value to be read.

Returns:: 0 on success, else -1.

Definition at line 380 of file pfi.c.

References DPRINTF, pfi2double(), pfi_ftoh16, pfi_ftoh32, and PIXEL_PFIS.

Referenced by pfi_read_internal().

int pfi_properties	(	FILE *	stream,
		int *	rows,
		int *	cols,
		int *	colors,
		int *	colormodel
	)

Gets the pfi image properties from an open file.

Parameters:

stream	The open file.
rows	A reference to the number of rows to be determined from the image header.
cols	A reference to the number of cols to be determined from the image header.
colors	A reference to the number of colors to be determined from the image header.
colormodel	A reference to an integer to represent the colormodel used in this image to be determined from the image header. We use 0 for none (greyscale), 1 for RGB etc.

Returns:: success: 0, else -1.

Definition at line 489 of file pfi.c.

References DPRINTF, numexpect(), and skipcomments().

Referenced by pfi_properties_name(), and pfi_read().

DLL_EXPORT int pfi_properties_name	(	char *	name,
		int *	rows,
		int *	cols,
		int *	colors,
		int *	colormodel
	)

Gets the pfi image properties from an image file.

Parameters:

name	The file name.
rows	A reference to the number of rows to be determined from the image header.
cols	A reference to the number of cols to be determined from the image header.
colors	A reference to the number of colors to be determined from the image header.
colormodel	A reference to an integer to represent the colormodel used in this image to be determined from the image header. We use 0 for none (greyscale), 1 for RGB etc.

Returns:: success: 0, else -1.

Definition at line 888 of file pfi.c.

References pfi_properties().

int pfi_putv	(	FILE *	stream,
		double	val
	)

Writes a double value into an open pfi file.

Parameters:

stream	The open file.
val	The value to be written.

Returns:: 0 on success, else -1.

Definition at line 428 of file pfi.c.

References double2pfi(), DPRINTF, pfi_htof16, pfi_htof32, and PIXEL_PFIS.

Referenced by pfi_write().

double* pfi_read	(	FILE *	stream,
		int *	rows,
		int *	cols,
		int *	colors,
		int *	colormodel
	)

Reads a pfi image from an open file.

Parameters:

stream	The open file.
rows	A reference to the number of rows to be determined from the image header.
cols	A reference to the number of cols to be determined from the image header.
colors	A reference to the number of colors to be determined from the image header.
colormodel	A reference to an integer to represent the colormodel used in this image to be determined from the image header. We use 0 for none (greyscale), 1 for RGB etc.

Returns:: A new double array containing the image. The colors are stored one after another, so we've got pixel one with all colors first, then pixel two etc. In case of error, NULL is returned

Definition at line 654 of file pfi.c.

References DPRINTF, pfi_properties(), and pfi_read_internal().

static int pfi_read_internal	(	FILE *	stream,
		int	rows,
		int	cols,
		int	colors,
		double *	res
	)		`[static]`

Reads a pfi image from an open file.

Parameters:

stream	The open file.
rows	the number of rows
cols	the number of cols
colors	the number of colors
res	A double array containing the image. The colors are stored one after another, so we've got pixel one with all colors first, then pixel two etc.

Returns:: 0 if successful, else -1

Definition at line 982 of file pfi.c.

References DPRINTF, pfi_getv(), and PIXEL_PFIS.

Referenced by pfi_read(), and pfi_read_name().

DLL_EXPORT int pfi_read_name	(	char *	name,
		int	rows,
		int	cols,
		int	colors,
		double *	result
	)

Reads a pfi image.

Parameters:

name	The file name.
rows	the number of rows
cols	the number of cols
colors	the number of colors
result	A double array containing the image. The colors are stored one after another, so we've got pixel one with all colors first, then pixel two etc.

Returns:: 0 if successful, else -1

Definition at line 770 of file pfi.c.

References pfi_read_internal().

int pfi_write	(	FILE *	stream,
		double *	buf,
		int	rows,
		int	cols,
		int	colors,
		int	colormodel,
		char *	fname
	)

Writes a pfi image to an open file.

Parameters:

stream	The open file.
buf	A reference to the buffer containing the image. The colors are stored one after another, so we've got pixel one with all colors first, then pixel two etc.
rows	A reference to the number of rows to be determined from the image header.
cols	A reference to the number of cols to be determined from the image header.
colors	A reference to the number of colors to be determined from the image header.
colors	A reference to the number of colors to be determined from the image header.
colormodel	An integer to represent the colormodel used in this image. We use 0 for none (greyscale), 1 for RGB etc.
fname	The name which will be written to the file header.

Returns:: 0 on success, else -1.

Definition at line 715 of file pfi.c.

References pfi_putv().

Referenced by pfi_write_name().

DLL_EXPORT int pfi_write_name	(	char *	name,
		double *	buf,
		int	rows,
		int	cols,
		int	colors,
		int	colormodel
	)

Opens and writes a pfi image.

Parameters:

name	The file name.
buf	A reference to the buffer containing the image. The colors are stored one after another, so we've got pixel one with all colors first, then pixel two etc.
rows	A reference to the number of rows to be determined from the image header.
cols	A reference to the number of cols to be determined from the image header.
colors	A reference to the number of colors to be determined from the image header.
colors	A reference to the number of colors to be determined from the image header.
colormodel	An integer to represent the colormodel used in this image. We use 0 for none (greyscale), 1 for RGB etc.

Returns:: 0 on success, else -1.

Definition at line 833 of file pfi.c.

References pfi_write().

SIZE_CHECK	(	pfiu32	,
		4	,
		bar
	)

SIZE_CHECK	(	pfiu16	,
		2	,
		foobar
	)

static int skipcomments ( FILE * stream ) [static]

Moves the file position pointer to the next line that is no comment line.

Parameters:

stream The open file.

Returns:: The new line's first character or EOF at EOF.

Definition at line 927 of file pfi.c.

Referenced by pfi_properties().

static void skipwhite ( char ** pos ) [static]

Returns the position of the first non whitespace character in a string.

Parameters:

pos A string.

Returns:: The new position.

Definition at line 1214 of file pfi.c.

Referenced by numexpect().

Defines

Functions

Define Documentation

Function Documentation