png_set_read_user_transform_fn

Name

png_set_read_user_transform_fn -- install a custom input transformation callback function

Synopsis

#include <png.h>

void png_set_read_user_transform_fn(png_structp png_ptr, png_user_transform_ptr read_user_transform_fn);

Description

This interface shall install a custom input transformation callback function.

The parameter png_ptr shall specify the PNG file to be transformed.

The parameter read_user_transform_fn shall specify the custom callback function.