Function C_SkJpegEncoder_Encode 

pub unsafe extern "C" fn C_SkJpegEncoder_Encode(
    stream: *mut SkWStream,
    pixmap: *const SkPixmap,
    quality: c_int,
    downsample: SkJpegEncoder_Downsample,
    alphaOption: SkJpegEncoder_AlphaOption,
    xmpMetadata: *const SkData,
    origin: *const SkEncodedOrigin,
) -> bool