gdPngWriteOptions Struct Reference

Options for writing PNG data. More...

#include <gd.h>

Data Fields
int	compression_level
unsigned int	filters
int	compression_strategy
const gdImageMetadata *	metadata
unsigned int	resolution_x
unsigned int	resolution_y

Detailed Description

Options for writing PNG data.

Field Documentation

compression_level

int gdPngWriteOptions::compression_level

PNG compression level: 0-9, or -1 for the zlib default.

compression_strategy

int gdPngWriteOptions::compression_strategy

One of the GD_PNG_COMPRESSION_STRATEGY_* constants.

filters

unsigned int gdPngWriteOptions::filters

Bitmask of GD_PNG_FILTER_* constants.

metadata

const gdImageMetadata* gdPngWriteOptions::metadata

Optional metadata to embed in the PNG.

resolution_x

unsigned int gdPngWriteOptions::resolution_x

Horizontal resolution in DPI, or 0 to use the gdImage value.

resolution_y

unsigned int gdPngWriteOptions::resolution_y

Vertical resolution in DPI, or 0 to use the gdImage value.

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The documentation for this struct was generated from the following file:

• src/gd.h