gifquantize.c File Reference

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

Include dependency graph for gifquantize.c:

Go to the source code of this file.

Macros
#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
typedef struct GifColorType	GifColorType
typedef struct QuantizedColorType	QuantizedColorType
typedef struct NewColorMapType	NewColorMapType

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

Macro Definition Documentation

ABS

#define ABS

(

x

)

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

Definition at line 18 of file gifquantize.c.

Referenced by GIFquantize().

BITS_PER_PRIM_COLOR

#define BITS_PER_PRIM_COLOR   5

Definition at line 25 of file gifquantize.c.

Referenced by GIFquantize(), and SubdivColorMap().

COLOR_ARRAY_SIZE

#define COLOR_ARRAY_SIZE   32768

Definition at line 24 of file gifquantize.c.

Referenced by GIFquantize().

GIF_ERROR

#define GIF_ERROR   0

Definition at line 20 of file gifquantize.c.

Referenced by GIFquantize(), and SubdivColorMap().

GIF_OK

#define GIF_OK   1

Definition at line 21 of file gifquantize.c.

Referenced by GIFquantize(), and SubdivColorMap().

MAX_PRIM_COLOR

#define MAX_PRIM_COLOR   0x1f

Definition at line 26 of file gifquantize.c.

Referenced by GIFquantize().

Typedef Documentation

byte

typedef unsigned char byte

Definition at line 13 of file gifquantize.c.

GifColorType

typedef struct GifColorType GifColorType

NewColorMapType

typedef struct NewColorMapType NewColorMapType

QuantizedColorType

typedef struct QuantizedColorType QuantizedColorType

Function Documentation

GIFquantize()

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.

SortCmpRtn()

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

static

Definition at line 298 of file gifquantize.c.

Referenced by SubdivColorMap().

SubdivColorMap()

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

static

Definition at line 196 of file gifquantize.c.

Referenced by GIFquantize().

Variable Documentation

SortRGBAxis

int SortRGBAxis

static

Definition at line 29 of file gifquantize.c.

Referenced by SortCmpRtn(), and SubdivColorMap().