tif_color.c File Reference

#include "tiffiop.h"
#include <math.h>

Go to the source code of this file.

Macros
#define	RINT(R)   ((uint32)((R)>0?((R)+0.5):((R)-0.5)))
#define	SHIFT   16
#define	FIX(x)   ((int32)((x) * (1L<<SHIFT) + 0.5))
#define	ONE_HALF   ((int32)(1<<(SHIFT-1)))
#define	Code2V(c, RB, RW, CR)   ((((c)-(int32)(RB))*(float)(CR))/(float)(((RW)-(RB)) ? ((RW)-(RB)) : 1))
#define	CLAMP(f, min, max)   ((f)<(min)?(min):(f)>(max)?(max):(f))
#define	HICLAMP(f, max)   ((f)>(max)?(max):(f))
#define	LumaRed   luma[0]
#define	LumaGreen   luma[1]
#define	LumaBlue   luma[2]

Functions
void	TIFFCIELabToXYZ (TIFFCIELabToRGB *cielab, uint32 l, int32 a, int32 b, float *X, float *Y, float *Z)
void	TIFFXYZToRGB (TIFFCIELabToRGB *cielab, float X, float Y, float Z, uint32 *r, uint32 *g, uint32 *b)
int	TIFFCIELabToRGBInit (TIFFCIELabToRGB *cielab, TIFFDisplay *display, float *refWhite)
void	TIFFYCbCrtoRGB (TIFFYCbCrToRGB *ycbcr, uint32 Y, int32 Cb, int32 Cr, uint32 *r, uint32 *g, uint32 *b)
int	TIFFYCbCrToRGBInit (TIFFYCbCrToRGB *ycbcr, float *luma, float *refBlackWhite)

Macro Definition Documentation

CLAMP

#define CLAMP	(		f,
			min,
			max
	)		((f)<(min)?(min):(f)>(max)?(max):(f))

Definition at line 179 of file tif_color.c.

Referenced by TIFFYCbCrtoRGB().

Code2V

#define Code2V	(		c,
			RB,
			RW,
			CR
	)		((((c)-(int32)(RB))*(float)(CR))/(float)(((RW)-(RB)) ? ((RW)-(RB)) : 1))

Definition at line 178 of file tif_color.c.

Referenced by TIFFYCbCrToRGBInit().

FIX

#define FIX

(

x

)

((int32)((x) * (1L<<SHIFT) + 0.5))

Definition at line 176 of file tif_color.c.

Referenced by TIFFYCbCrToRGBInit().

HICLAMP

#define HICLAMP	(		f,
			max
	)		((f)>(max)?(max):(f))

Definition at line 180 of file tif_color.c.

Referenced by TIFFYCbCrtoRGB().

LumaBlue

#define LumaBlue   luma[2]

Referenced by TIFFYCbCrToRGBInit().

LumaGreen

#define LumaGreen   luma[1]

Referenced by TIFFYCbCrToRGBInit().

LumaRed

#define LumaRed   luma[0]

Referenced by TIFFYCbCrToRGBInit().

ONE_HALF

#define ONE_HALF   ((int32)(1<<(SHIFT-1)))

Definition at line 177 of file tif_color.c.

Referenced by TIFFYCbCrToRGBInit().

RINT

#define RINT

(

R

)

((uint32)((R)>0?((R)+0.5):((R)-0.5)))

Definition at line 73 of file tif_color.c.

Referenced by TIFFXYZToRGB().

SHIFT

#define SHIFT   16

Definition at line 175 of file tif_color.c.

Referenced by TIFFYCbCrtoRGB(), and TIFFYCbCrToRGBInit().

Function Documentation

TIFFCIELabToRGBInit()

int TIFFCIELabToRGBInit	(	TIFFCIELabToRGB *	cielab,
		TIFFDisplay *	display,
		float *	refWhite
	)

Definition at line 125 of file tif_color.c.

TIFFCIELabToXYZ()

void TIFFCIELabToXYZ	(	TIFFCIELabToRGB *	cielab,
		uint32	l,
		int32	a,
		int32	b,
		float *	X,
		float *	Y,
		float *	Z
	)

Definition at line 46 of file tif_color.c.

References F, TIFFCIELabToRGB::X0, TIFFCIELabToRGB::Y0, and TIFFCIELabToRGB::Z0.

Referenced by DECLAREContigPutFunc().

TIFFXYZToRGB()

void TIFFXYZToRGB	(	TIFFCIELabToRGB *	cielab,
		float	X,
		float	Y,
		float	Z,
		uint32 *	r,
		uint32 *	g,
		uint32 *	b
	)

Definition at line 78 of file tif_color.c.

References TIFFCIELabToRGB::bstep, TIFFDisplay::d_mat, TIFFDisplay::d_Vrwb, TIFFDisplay::d_Vrwg, TIFFDisplay::d_Vrwr, TIFFDisplay::d_Y0B, TIFFDisplay::d_Y0G, TIFFDisplay::d_Y0R, TIFFDisplay::d_YCB, TIFFDisplay::d_YCG, TIFFDisplay::d_YCR, TIFFCIELabToRGB::display, TIFFCIELabToRGB::gstep, i, int, TIFFCIELabToRGB::range, RINT, TIFFCIELabToRGB::rstep, TIFFmax, TIFFmin, TIFFCIELabToRGB::Yb2b, TIFFCIELabToRGB::Yg2g, and TIFFCIELabToRGB::Yr2r.

Referenced by DECLAREContigPutFunc().

TIFFYCbCrtoRGB()

void TIFFYCbCrtoRGB	(	TIFFYCbCrToRGB *	ycbcr,
		uint32	Y,
		int32	Cb,
		int32	Cr,
		uint32 *	r,
		uint32 *	g,
		uint32 *	b
	)

Definition at line 183 of file tif_color.c.

References TIFFYCbCrToRGB::Cb_b_tab, TIFFYCbCrToRGB::Cb_g_tab, CLAMP, TIFFYCbCrToRGB::clamptab, TIFFYCbCrToRGB::Cr_g_tab, TIFFYCbCrToRGB::Cr_r_tab, HICLAMP, int, SHIFT, and TIFFYCbCrToRGB::Y_tab.

TIFFYCbCrToRGBInit()

int TIFFYCbCrToRGBInit	(	TIFFYCbCrToRGB *	ycbcr,
		float *	luma,
		float *	refBlackWhite
	)

Definition at line 212 of file tif_color.c.

References _TIFFmemset(), TIFFYCbCrToRGB::Cb_b_tab, TIFFYCbCrToRGB::Cb_g_tab, TIFFYCbCrToRGB::clamptab, Code2V, TIFFYCbCrToRGB::Cr_g_tab, TIFFYCbCrToRGB::Cr_r_tab, F, FIX, i, LumaBlue, LumaGreen, LumaRed, ONE_HALF, SHIFT, TIFFroundup, and TIFFYCbCrToRGB::Y_tab.