gifquantize.c File Reference

#include <stdio.h>
#include <stdlib.h>

Go to the source code of this file.

Classes
struct	GifColorType
struct	QuantizedColorType
struct	NewColorMapType
Defines
#define	ABS(x)   ((x) > 0 ? (x) : (-(x)))
#define	GIF_ERROR   0
#define	GIF_OK   1
#define	COLOR_ARRAY_SIZE   32768
#define	BITS_PER_PRIM_COLOR   5
#define	MAX_PRIM_COLOR   0x1f
Typedefs
typedef unsigned char	byte
Functions
static int	SubdivColorMap (NewColorMapType *NewColorSubdiv, unsigned int ColorMapSize, unsigned int *NewColorMapSize)
static int	SortCmpRtn (const void *Entry1, const void *Entry2)
int	GIFquantize (unsigned int Width, unsigned int Height, int *ColorMapSize, byte *RedInput, byte *GreenInput, byte *BlueInput, byte *OutputBuffer, GifColorType *OutputColorMap)
Variables
static int	SortRGBAxis

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Define Documentation

#define ABS

(

x

)

((x) > 0 ? (x) : (-(x)))

Definition at line 18 of file gifquantize.c.

#define BITS_PER_PRIM_COLOR   5

Definition at line 25 of file gifquantize.c.

Referenced by GIFquantize(), and SubdivColorMap().

#define COLOR_ARRAY_SIZE   32768

Definition at line 24 of file gifquantize.c.

Referenced by GIFquantize().

#define GIF_ERROR   0

Definition at line 20 of file gifquantize.c.

#define GIF_OK   1

Definition at line 21 of file gifquantize.c.

#define MAX_PRIM_COLOR   0x1f

Definition at line 26 of file gifquantize.c.

Referenced by GIFquantize().

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Typedef Documentation

typedef unsigned char byte

Definition at line 13 of file gifquantize.c.

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Function Documentation

int GIFquantize	(	unsigned int	Width,
		unsigned int	Height,
		int *	ColorMapSize,
		byte *	RedInput,
		byte *	GreenInput,
		byte *	BlueInput,
		byte *	OutputBuffer,
		GifColorType *	OutputColorMap
	)

Definition at line 63 of file gifquantize.c.

References ABS, BITS_PER_PRIM_COLOR, GifColorType::Blue, COLOR_ARRAY_SIZE, QuantizedColorType::Count, NewColorMapType::Count, fprintf(), free(), GIF_ERROR, GIF_OK, GifColorType::Green, i, RooFit::Index(), int, j, long, malloc(), MAX_PRIM_COLOR, QuantizedColorType::NewColorIndex, NULL, NewColorMapType::NumEntries, NewColorMapType::QuantizedColors, GifColorType::Red, QuantizedColorType::RGB, NewColorMapType::RGBWidth, and SubdivColorMap().

static int SortCmpRtn	(	const void *	Entry1,
		const void *	Entry2
	)			[static]

Definition at line 297 of file gifquantize.c.

References SortRGBAxis.

Referenced by SubdivColorMap().

static int SubdivColorMap	(	NewColorMapType *	NewColorSubdiv,
		unsigned int	ColorMapSize,
		unsigned int *	NewColorMapSize
	)			[static]

Definition at line 196 of file gifquantize.c.

References BITS_PER_PRIM_COLOR, NewColorMapType::Count, free(), GIF_ERROR, GIF_OK, i, RooFit::Index(), j, malloc(), NULL, NewColorMapType::NumEntries, NewColorMapType::QuantizedColors, NewColorMapType::RGBMin, NewColorMapType::RGBWidth, SortCmpRtn(), SortRGBAxis, and Sum().

Referenced by GIFquantize().

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Variable Documentation

int SortRGBAxis [static]

Definition at line 29 of file gifquantize.c.

Referenced by SortCmpRtn(), and SubdivColorMap().

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