The Image Util APIs provides functions for common of images .

Required Header

#include <image_util.h>

Overview

Image Util API provides support for common functions of images. The API allows :

Calculate the size of the image buffer for the specified resolution and colorspace to be used in the image util module.
Extracts representative color from an image buffer.

Functions
int	image_util_calculate_buffer_size (int width, int height, image_util_colorspace_e colorspace, unsigned int *size)
	Calculates the size of the image buffer for the specified resolution and colorspace.
int	image_util_extract_color_from_memory (const unsigned char image_buffer, int width, int height, unsigned char rgb_r, unsigned char rgb_g, unsigned char rgb_b)
	Extracts representative color from an image buffer.

Enumeration for colorspace.

Enumerator:

Enumeration for error.

Enumerator:

IMAGE_UTIL_ERROR_NONE	Successful
IMAGE_UTIL_ERROR_INVALID_PARAMETER	Invalid parameter
IMAGE_UTIL_ERROR_OUT_OF_MEMORY	Out of memory
IMAGE_UTIL_ERROR_NO_SUCH_FILE	No such file
IMAGE_UTIL_ERROR_INVALID_OPERATION	Internal error
IMAGE_UTIL_ERROR_NOT_SUPPORTED_FORMAT	Not supported format
IMAGE_UTIL_ERROR_PERMISSION_DENIED	Permission denied
IMAGE_UTIL_ERROR_NOT_SUPPORTED	Not supported

int image_util_calculate_buffer_size	(	int	width,
		int	height,
		image_util_colorspace_e	colorspace,
		unsigned int *	size
	)

Calculates the size of the image buffer for the specified resolution and colorspace.

Parameters:

Return values:

IMAGE_UTIL_ERROR_NONE	Successful
IMAGE_UTIL_ERROR_INVALID_PARAMETER	Invalid parameter

See also:: image_util_transform_run(); image_util_decode_jpeg(); image_util_decode_jpeg_from_memory(); image_util_encode_jpeg(); image_util_encode_jpeg_to_memory()

int image_util_extract_color_from_memory	(	const unsigned char *	image_buffer,
		int	width,
		int	height,
		unsigned char *	rgb_r,
		unsigned char *	rgb_g,
		unsigned char *	rgb_b
	)

Extracts representative color from an image buffer.

Parameters:

[in]	image_buffer	The original image buffer
[in]	width	The image width
[in]	height	The image height
[out]	rgb_r	The red color in RGB color space
[out]	rgb_g	The green color in RGB color space
[out]	rgb_b	The blue color in RGB color space

Return values:

IMAGE_UTIL_ERROR_NONE	Successful
IMAGE_UTIL_ERROR_INVALID_PARAMETER	Invalid parameter
IMAGE_UTIL_ERROR_OUT_OF_MEMORY	out of memory
IMAGE_UTIL_ERROR_INVALID_OPERATION	Invalid operation