Color space for image
Whether the image should have transparency information
Number of bits per color sample
Width of image in pixels, must be > 0
Height of image in pixels, must be > 0
the rowstride for the given values, or -1 in case of error.
2.36.8
Calculates the rowstride that an image created with those values would have. This is useful for front-ends and backends that want to sanity check image values without needing to create them.