Function rsmpeg::ffi::avcodec_chroma_pos_to_enum

pub unsafe extern "C" fn avcodec_chroma_pos_to_enum(xpos: i32, ypos: i32) -> u32

Converts swscale x/y chroma position to AVChromaLocation.

The positions represent the chroma (0,0) position in a coordinates system with luma (0,0) representing the origin and luma(1,1) representing 256,256

@param xpos horizontal chroma sample position @param ypos vertical chroma sample position