png_get_oFFs

Name

png_get_oFFs -- get screen offsets for the given image

Synopsis

#include <png.h>

png_uint_32 png_get_oFFs(png_structp png_ptr, png_infop info_ptr, png_int_32 * x_offset, png_int_32 * y_offset, int * unit_type);

Description

png_get_oFFs() shall read the positive offset from the left edge of the screen from info_ptr to x_offset and the positive offset from the top edge of the screen to y_offset. The unit type shall be returned in unit_type, which can take the following values

PNG_OFFSET_PIXEL
PNG_OFFSET_MICROMETER

Return Value

On success, png_get_oFFs() shall return PNG_INFO_oFFs. Otherwise, png_get_oFFs() shall return 0.