gif_writer.h File Reference

GIF compilation engine utilizing LZW encoding. More...

#include "common.h"
#include "ppm.h"

Go to the source code of this file.

Functions
int	Gif_WriteIndexed (const char *path, const u8 *frames, int frame_count, int width, int height, const RgbaColor *palette, int palette_count, int transparent_index, int delay_cs, int loop_count, int scale)
	Encodes and writes a sequence of indexed frames to a GIF file. More...

Detailed Description

GIF compilation engine utilizing LZW encoding.

Function Documentation

Gif_WriteIndexed()

int Gif_WriteIndexed	(	const char *	path,
		const u8 *	frames,
		int	frame_count,
		int	width,
		int	height,
		const RgbaColor *	palette,
		int	palette_count,
		int	transparent_index,
		int	delay_cs,
		int	loop_count,
		int	scale
	)

Encodes and writes a sequence of indexed frames to a GIF file.

Parameters

path	Path to write the final GIF file.
frames	Pointer to 8-bit indexed frame pixel buffer. Size: (width * height * frame_count).
frame_count	Total number of frames in sequence.
width	Canvas width in pixels.
height	Canvas height in pixels.
palette	Pointer to an array of colors defining the color map (palette).
palette_count	Total number of entries in color palette (up to 256).
transparent_index	Index in the palette mapping transparency, or -1.
delay_cs	Base duration between frames in centiseconds (1/100ths of a second).
loop_count	Number of loops (0 = infinite).
scale	Bilinear scale multiplier applied to output image sizes.

Returns

0 on success; negative value on file or encoding failure.