gif.h File Reference

#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>

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Classes
struct	GifPalette
struct	GifBitStatus
struct	GifLzwNode
struct	GifWriter

Macros
#define	GIF_TEMP_MALLOC   malloc
#define	GIF_TEMP_FREE   free
#define	GIF_MALLOC   malloc
#define	GIF_FREE   free

Functions
int	GifIMax (int l, int r)
int	GifIMin (int l, int r)
int	GifIAbs (int i)
void	GifGetClosestPaletteColor (GifPalette *pPal, int r, int g, int b, int *bestInd, int *bestDiff, int treeRoot)
void	GifSwapPixels (uint8_t *image, int pixA, int pixB)
int	GifPartition (uint8_t *image, const int left, const int right, const int elt, int pivotIndex)
void	GifPartitionByMedian (uint8_t *image, int left, int right, int com, int neededCenter)
void	GifSplitPalette (uint8_t *image, int numPixels, int firstElt, int lastElt, int splitElt, int splitDist, int treeNode, bool buildForDither, GifPalette *pal)
int	GifPickChangedPixels (const uint8_t *lastFrame, uint8_t *frame, int numPixels)
void	GifMakePalette (const uint8_t *lastFrame, const uint8_t *nextFrame, uint32_t width, uint32_t height, int bitDepth, bool buildForDither, GifPalette *pPal)
void	GifDitherImage (const uint8_t *lastFrame, const uint8_t *nextFrame, uint8_t *outFrame, uint32_t width, uint32_t height, GifPalette *pPal)
void	GifThresholdImage (const uint8_t *lastFrame, const uint8_t *nextFrame, uint8_t *outFrame, uint32_t width, uint32_t height, GifPalette *pPal)
void	GifWriteBit (GifBitStatus *stat, uint32_t bit)
void	GifWriteChunk (FILE *f, GifBitStatus *stat)
void	GifWriteCode (FILE *f, GifBitStatus *stat, uint32_t code, uint32_t length)
void	GifWritePalette (const GifPalette *pPal, FILE *f)
void	GifWriteLzwImage (FILE *f, uint8_t *image, uint32_t left, uint32_t top, uint32_t width, uint32_t height, uint32_t delay, GifPalette *pPal)
bool	GifBegin (GifWriter *writer, const char *filename, uint32_t width, uint32_t height, uint32_t delay, int32_t bitDepth=8, bool dither=false)
bool	GifWriteFrame (GifWriter *writer, const uint8_t *image, uint32_t width, uint32_t height, uint32_t delay, int bitDepth=8, bool dither=false)
bool	GifEnd (GifWriter *writer)

Variables
const int	kGifTransIndex = 0

Macro Definition Documentation

GIF_FREE

#define GIF_FREE   free

GIF_MALLOC

#define GIF_MALLOC   malloc

GIF_TEMP_FREE

#define GIF_TEMP_FREE   free

GIF_TEMP_MALLOC

#define GIF_TEMP_MALLOC   malloc

Function Documentation

GifBegin()

bool GifBegin	(	GifWriter *	writer,
		const char *	filename,
		uint32_t	width,
		uint32_t	height,
		uint32_t	delay,
		int32_t	bitDepth = 8,
		bool	dither = false )

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GifDitherImage()

void GifDitherImage	(	const uint8_t *	lastFrame,
		const uint8_t *	nextFrame,
		uint8_t *	outFrame,
		uint32_t	width,
		uint32_t	height,
		GifPalette *	pPal )

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GifEnd()

bool GifEnd

(

GifWriter *

writer

)

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GifGetClosestPaletteColor()

void GifGetClosestPaletteColor	(	GifPalette *	pPal,
		int	r,
		int	g,
		int	b,
		int *	bestInd,
		int *	bestDiff,
		int	treeRoot )

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GifIAbs()

int GifIAbs

(

int

i

)

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GifIMax()

int GifIMax	(	int	l,
		int	r )

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GifIMin()

int GifIMin	(	int	l,
		int	r )

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GifMakePalette()

void GifMakePalette	(	const uint8_t *	lastFrame,
		const uint8_t *	nextFrame,
		uint32_t	width,
		uint32_t	height,
		int	bitDepth,
		bool	buildForDither,
		GifPalette *	pPal )

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GifPartition()

int GifPartition	(	uint8_t *	image,
		const int	left,
		const int	right,
		const int	elt,
		int	pivotIndex )

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GifPartitionByMedian()

void GifPartitionByMedian	(	uint8_t *	image,
		int	left,
		int	right,
		int	com,
		int	neededCenter )

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GifPickChangedPixels()

int GifPickChangedPixels	(	const uint8_t *	lastFrame,
		uint8_t *	frame,
		int	numPixels )

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GifSplitPalette()

void GifSplitPalette	(	uint8_t *	image,
		int	numPixels,
		int	firstElt,
		int	lastElt,
		int	splitElt,
		int	splitDist,
		int	treeNode,
		bool	buildForDither,
		GifPalette *	pal )

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GifSwapPixels()

void GifSwapPixels	(	uint8_t *	image,
		int	pixA,
		int	pixB )

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GifThresholdImage()

void GifThresholdImage	(	const uint8_t *	lastFrame,
		const uint8_t *	nextFrame,
		uint8_t *	outFrame,
		uint32_t	width,
		uint32_t	height,
		GifPalette *	pPal )

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GifWriteBit()

void GifWriteBit	(	GifBitStatus *	stat,
		uint32_t	bit )

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GifWriteChunk()

void GifWriteChunk	(	FILE *	f,
		GifBitStatus *	stat )

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GifWriteCode()

void GifWriteCode	(	FILE *	f,
		GifBitStatus *	stat,
		uint32_t	code,
		uint32_t	length )

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GifWriteFrame()

bool GifWriteFrame	(	GifWriter *	writer,
		const uint8_t *	image,
		uint32_t	width,
		uint32_t	height,
		uint32_t	delay,
		int	bitDepth = 8,
		bool	dither = false )

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GifWriteLzwImage()

void GifWriteLzwImage	(	FILE *	f,
		uint8_t *	image,
		uint32_t	left,
		uint32_t	top,
		uint32_t	width,
		uint32_t	height,
		uint32_t	delay,
		GifPalette *	pPal )

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GifWritePalette()

void GifWritePalette	(	const GifPalette *	pPal,
		FILE *	f )

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Variable Documentation

kGifTransIndex

const int kGifTransIndex = 0