Function encode_img_writer 

pub fn encode_img_writer<T: Write>(
    data: ImageData,
    typ: ImageOutputType,
    file: &mut T,
    config: &ExtraConfig,
) -> Result<()>

Available on crate feature image only.

Encodes an image to the specified format and writes it to a writer.

• data - The image data to encode.
• typ - The output image format.
• filename - The path of the file to write the encoded image to.
• config - Extra configuration.