int planes
The planes variable contains the number of channels in the image. This includes all color channels and any additional alpha channels available. It returns the same value as the Z variable.
int totalPlanes = planes; int colorPlanesOnly = planesWithoutAlpha; int alphaPlanes = planes - planesWithoutAlpha; printf("Total channels/planes: %d\nColor planes only: %d\nAlpha channels: %d", totalPlanes, colorPlanesOnly, alphaPlanes);