pixel.c File Reference

#include <gandalf/image/pixel.h>
#include <gandalf/common/misc_error.h>

Functions
unsigned char	gan_pixel_rgbuc_to_yuc (const Gan_RGBPixel_uc *rgb)
	Convert RGB unsigned char pixel to grey-level unsigned char pixel.
unsigned short	gan_pixel_rgbuc_to_yus (const Gan_RGBPixel_uc *rgb)
	Convert RGB unsigned char pixel to grey-level unsigned short pixel.
unsigned int	gan_pixel_rgbuc_to_yui (const Gan_RGBPixel_uc *rgb)
	Convert RGB unsigned char pixel to grey-level unsigned int pixel.
unsigned char	gan_pixel_rgbus_to_yuc (const Gan_RGBPixel_us *rgb)
	Convert RGB unsigned short pixel to grey-level unsigned char pixel.
unsigned short	gan_pixel_rgbus_to_yus (const Gan_RGBPixel_us *rgb)
	Convert RGB unsigned short pixel to grey-level unsigned short pixel.
float	gan_pixel_rgbui_to_yf (const Gan_RGBPixel_ui *rgb)
	Convert RGB float pixel to grey-level float pixel.
float	gan_pixel_rgbf_to_yf (const Gan_RGBPixel_f *rgb)
	Convert RGB float pixel to grey-level float pixel.
double	gan_pixel_rgbd_to_yd (const Gan_RGBPixel_d *rgb)
	Convert RGB double pixel to grey-level double pixel.
unsigned char	gan_pixel_rgbauc_to_yuc (const Gan_RGBAPixel_uc *rgba)
	Convert RGBA unsigned char pixel to grey-level unsigned char pixel.
unsigned short	gan_pixel_rgbauc_to_yus (const Gan_RGBAPixel_uc *rgba)
	Convert RGBA unsigned char pixel to grey-level unsigned short pixel.
unsigned int	gan_pixel_rgbauc_to_yui (const Gan_RGBAPixel_uc *rgba)
	Convert RGBA unsigned char pixel to grey-level unsigned int pixel.
unsigned char	gan_pixel_rgbaus_to_yuc (const Gan_RGBAPixel_us *rgba)
	Convert RGBA unsigned short pixel to grey-level unsigned char pixel.
unsigned short	gan_pixel_rgbaus_to_yus (const Gan_RGBAPixel_us *rgba)
	Convert RGBA unsigned short pixel to grey-level unsigned short pixel.
float	gan_pixel_rgbaui_to_yf (const Gan_RGBAPixel_ui *rgba)
	Convert RGBA float pixel to grey-level float pixel.
float	gan_pixel_rgbaf_to_yf (const Gan_RGBAPixel_f *rgba)
	Convert RGBA float pixel to grey-level float pixel.
double	gan_pixel_rgbad_to_yd (const Gan_RGBAPixel_d *rgba)
	Convert RGBA double pixel to grey-level double pixel.
Gan_Bool	gan_image_convert_pixel (Gan_Pixel *inpix, Gan_ImageFormat format, Gan_Type type, Gan_Pixel *outpix, int *error_code)
	Convert a pixel to the given format and type.
double	gan_image_convert_scale (Gan_Type gtFromType, Gan_Type gtToType)
	Return the scaling involved in converting a pixel from one type to another.
Gan_Bool	gan_image_offset_pixel_q (Gan_Pixel *pixel, double offset, Gan_Pixel *offset_pixel)
	Offset pixel values.
Gan_Bool	gan_image_scale_pixel_q (Gan_Pixel *pixel, double scale, Gan_Pixel *scaled_pixel)
	Scale pixel values.
Gan_Bool	gan_image_divide_pixel_q (Gan_Pixel *pixel, double scale, Gan_Pixel *scaled_pixel)
	Divide pixel values by scalar.
Gan_Bool	gan_image_fill_zero_pixel (Gan_Pixel *pixel)
	Fill a pixel with zero value(s).
const char *	gan_image_format_string (Gan_ImageFormat format)
	Generates a string identifier for an internal image format.
Gan_ImageFormat	gan_image_format_with_alpha (Gan_ImageFormat format)
	Returns a pixel format with an alpha channel given an input format.
Gan_ImageFormat	gan_image_format_without_alpha (Gan_ImageFormat format)
	Returns a pixel format without an alpha channel given an input format.
Variables
float	lookup_table_8bit [UCHAR_MAX+1]

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Detailed Description

Module: Image pixel definitions and functions

Part of: Gandalf Library

Version:

1.42

Date:

2006/01/19 15:00:11

Author:

pm

Copyright: (c) 2000 Imagineer Software Limited

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