simple_clsend.c File Reference

(git 551c36c, 2023-10-02)

#include "edtinc.h"
#include "clsim_lib.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <tiffio.h>

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Data Structures
struct	image_info_t

Functions
void	usage (const char *progname, const char *errstr)
int	get_image_info_file (const char *fname, image_info_t **imagelist)
ImgFmt	check_extension (const char *fname)
int	get_images_info_dir (const char *dirpath, image_info_t **imagelist)
int	get_image_info (ImgFmt fmt, image_info_t *image_p)
int	get_tif_info (image_info_t *img_details)
int	is_valid_tiff (TIFF *image)
int	get_gif_info (image_info_t *img_details)
int	get_ras_info (image_info_t *img_details)
int	get_raw_info (image_info_t *img_details)
int	get_bmp_info (image_info_t *img_details)
int	get_jpg_info (image_info_t *img_details)
char *	strip_nl (char *s)
int	comment_or_blank (const char *str)
void	error_exit (const char *errstr)
void	free_image_info_list (image_info_t *imagelist, const size_t cnt)
int	check_image_sizes (image_info_t *list, unsigned int nimages)
int	load_next_image (PdvDev pdv_p, unsigned int current_image, image_info_t *image_details, unsigned int total_images, u_char **buffers, unsigned int nbuffers, unsigned int buffer_size)
long unsigned int	fill_buffer_tif (image_info_t *img_details, u_char *buffer, int max_size)
int	fill_buffer_gif (image_info_t *img_details, u_char *buffer, int max_size)
int	fill_buffer_bmp (image_info_t *img_details, u_char *buffer, int max_size)
int	fill_buffer_jpg (image_info_t *img_details, u_char *buffer, int max_size)
int	fill_buffer_ras (image_info_t *img_details, u_char *buffer, int max_size)
int	fill_buffer_raw (image_info_t *img_details, u_char *buffer, int max_size)
unsigned int	edt_min (unsigned int l, unsigned int r)
int	main (int argc, const char *argv[])

Detailed Description

Copyright

Copyright (C) 2011 Engineering Design Team, Inc.

A utility / example program to send multiple TIFF format images through the EDT Camera Link Simulator (CLS) to a Camera Link frame grabber, such as the EDT VisionLink F4.

For a more complex application (including variable width images, left/right fill, etc) with the same purpose see: send_tiffs.c

See the EDT CLS Simulator users guide for detailed information on this application.

Prerequisites: Setup the CLS via the clsiminit application.

Function Documentation

usage()

static void usage	(	const char *	progname,
		const char *	errmsg
	)

Display usage information.

Parameters

progname	The name of this program.
errstr	A discription of what is invalid about the call.

Display usage information.

Parameters

progname	The name of this program.
err	A description of what is invalid about the call.

Display usage information.

Parameters

progname	The name of this program.
errmsg	A description of what is invalid about the call.

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get_image_info_file()

int get_image_info_file	(	const char *	fname,
		image_info_t **	imagelist
	)

Retrieve the specified image's information.

Parameters

fname	Name of the image file whose information is to be gathered.
imagelist	An array of structures containing information about each image in the imagelist.

Returns

1 if specified file is found and meets format specs, otherwise -1.

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check_extension()

ImgFmt check_extension

(

const char *

fname

)

Validate image type of specified file, based on extension.

Parameters

fname

Name of the image file to validate.

Returns

Enum representing the image type. fmt_unk if extension matches nothing.

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get_images_info_dir()

int get_images_info_dir	(	const char *	dirpath,
		image_info_t **	imagelist
	)

Collect information for all valid images within a specified directory.

Uses the OS independent edt_* directory open / read / close functions.

Parameters

dirpath	Path to a directory containing images to validate and collect information upon.
imagelist	An array of structures containing information about each image in the imagelist.

return number of images found, or -1 if error

get_image_info()

int get_image_info	(	ImgFmt	fmt,
		image_info_t *	image_p
	)

Retrieve information for a specified image.

Parameters

fmt	An enum representing the image type.
image_p	Storage for the image details. Must have pathname specified.

Returns

0 on successful retrieval.

get_tif_info()

int get_tif_info

(

image_info_t *

img_details

)

Retrieve information for tiff image.

Parameters

img_details

Storage for the image details. Must have pathname specified.

Returns

0 on successful retrieval.

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is_valid_tiff()

int is_valid_tiff

(

TIFF *

image

)

Validate the TIFF image; ensure it meets current requirements. Image must be <= 16 bits/pixel and 1 sample/pixel. Image must also define width and height.

Parameters

image

The image to validate.

Returns

1 (True) if image is valid, 0 (False) otherwise.

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get_gif_info()

int get_gif_info

(

image_info_t *

img_details

)

Retrieve information for gif image - STUB.

Parameters

img_details

Storage for the image details. Must have filename specified.

Returns

1 (True) if image is valid, 0 (False) otherwise.

get_ras_info()

int get_ras_info

(

image_info_t *

img_details

)

Retrieve information for ras image - STUB.

Parameters

img_details

Storage for the image details. Must have filename specified.

Returns

1 (True) if image is valid, 0 (False) otherwise.

get_raw_info()

int get_raw_info

(

image_info_t *

img_details

)

Retrieve information for raw image - STUB.

Parameters

img_details

Storage for the image details. Must have filename specified.

Returns

1 (True) if image is valid, 0 (False) otherwise.

get_bmp_info()

int get_bmp_info

(

image_info_t *

img_details

)

Retrieve information for bmp image - STUB.

Parameters

img_details

Storage for the image details. Must have filename specified.

Returns

1 (True) if image is valid, 0 (False) otherwise.

get_jpg_info()

int get_jpg_info

(

image_info_t *

img_details

)

Retrieve information for jpg image - STUB.

Parameters

img_details

Storage for the image details. Must have filename specified.

Returns

1 (True) if image is valid, 0 (False) otherwise.

strip_nl()

char * strip_nl

(

char *

s

)

Strip the newline off a string by replacing any terminating (\r or
) with a NULL character.

Parameters

s	String to strip any terminating characters from.

Returns

Same string pointer, with \r and
chars replaced.

comment_or_blank()

int comment_or_blank

(

const char *

str

)

Check the specified string for comment or blank character.

Parameters

str	The string to check.

Returns

1 (True) if all blanks or first nonblank is '#', 0 (False) otherwise.

error_exit()

void error_exit

(

const char *

errstr

)

Helper function to specify error string before exiting with failure.

Parameters

errstr

String containing a specialized error message.

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free_image_info_list()

void free_image_info_list	(	image_info_t *	imagelist,
		const size_t	cnt
	)

Free a list of images; all images within the list and then list itself.

Parameters

list	The list of images and their parameters.
cnt	The number of images in the list.

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check_image_sizes()

int check_image_sizes	(	image_info_t *	list,
		unsigned int	nimages
	)

Verify that an image information list is (a) correctly sized to the expected image count and (b) all of the images within the list have the same dimensions.

Parameters

list	The list of images and their parameters.
nimages	The expected image count.

Returns

1 (True) if the sizes match, 0 (False) otherwise.

load_next_image()

int load_next_image	(	PdvDev	pdv_p,
		unsigned int	current_image,
		image_info_t *	image_details,
		unsigned int	total_images,
		u_char **	buffers,
		unsigned int	nbuffers,
		unsigned int	buffer_size
	)

Load the current_image into memory OR the appropriate ring-buffer.

If the index of current_image is larger than total_images it will wrap around. (current_image = current_image % total_images)

Parameters

pdv_p	Valid EDT device pointer to the CLS.
current_image	The index of the image to load into local buffer.
img_details	List of structures containing image details.
total_images	The number of elements in image_details list.
buffers	The array of ring buffers in use.
nbuffers	The number of elements in buffers array.
buffer_size	The size of image data buffers to allocate, if buffers is NULL.

Returns

If successful the size of the image loaded, 0 on failure.

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fill_buffer_tif()

long unsigned int fill_buffer_tif	(	image_info_t *	img_details,
		u_char *	buffer,
		int	max_size
	)

Stores the tiff image found in img_details->pathname to the specified buffer.

Parameters

img_details	Storage for the image details. Must have pathname specified.
buffer	A pointer to a buffer in which to store the image.
max_size	The size of the buffer in bytes.

Returns

The size in bytes of image loaded into buffer.

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fill_buffer_gif()

int fill_buffer_gif	(	image_info_t *	img_details,
		u_char *	buffer,
		int	max_size
	)

Stores the gif image found in img_details->filename to the specified buffer - STUB.

Parameters

img_details	Storage for the image details. Must have filename specified.
buffer	A pointer to a buffer in which to store the image.
max_size	The size of the buffer in bytes.

Returns

The size in bytes of image loaded into buffer, -1 on error.

fill_buffer_bmp()

int fill_buffer_bmp	(	image_info_t *	img_details,
		u_char *	buffer,
		int	max_size
	)

Stores the bmp image found in img_details->filename to the specified buffer - STUB.

Parameters

img_details	Storage for the image details. Must have filename specified.
buffer	A pointer to a buffer in which to store the image.
max_size	The size of the buffer in bytes.

Returns

The size in bytes of image loaded into buffer, -1 on error.

fill_buffer_jpg()

int fill_buffer_jpg	(	image_info_t *	img_details,
		u_char *	buffer,
		int	max_size
	)

Stores the jpg image found in img_details->filename to the specified buffer - STUB.

Parameters

img_details	Storage for the image details. Must have filename specified.
buffer	A pointer to a buffer in which to store the image.
max_size	The size of the buffer in bytes.

Returns

The size in bytes of image loaded into buffer, -1 on error.

fill_buffer_ras()

int fill_buffer_ras	(	image_info_t *	img_details,
		u_char *	buffer,
		int	max_size
	)

Stores the ras image found in img_details->filename to the specified buffer - STUB.

Parameters

img_details	Storage for the image details. Must have filename specified.
buffer	A pointer to a buffer in which to store the image.
max_size	The size of the buffer in bytes.

Returns

The size in bytes of image loaded into buffer, -1 on error.

fill_buffer_raw()

int fill_buffer_raw	(	image_info_t *	img_details,
		u_char *	buffer,
		int	max_size
	)

Stores the raw image found in img_details->filename to the specified buffer - STUB.

Parameters

img_details	Storage for the image details. Must have filename specified.
buffer	A pointer to a buffer in which to store the image.
max_size	The size of the buffer in bytes.

Returns

The size in bytes of image loaded into buffer, -1 on error.

edt_min()

unsigned int edt_min	(	unsigned int	l,
		unsigned int	r
	)

Determine the minimum value of the two specified.

Parameters

l	One of two integer values to determine the lesser of.
r	The other of two integer values to determine the lesser of.

Returns

The lesser of the two values.

main()

int main	(	int	argc,
		const char *	argv[]
	)

Open a number of TIFF images and send them though the simulator.

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