JxlEncoderSetUpsamplingMode

jpegxl_sys::encoder::encode

Function JxlEncoderSetUpsamplingMode 

Source 
pub unsafe extern "C-unwind" fn JxlEncoderSetUpsamplingMode(
    enc: *mut JxlEncoder,
    factor: i64,
    mode: i64,
) -> JxlEncoderStatus
Expand description

Sets the upsampling method the decoder will use in case there are frames with JxlEncoderFrameSettingsSetOption set. This is useful in combination with the JxlEncoderFrameSettingsSetOption option, to control the type of upsampling that will be used.

§Parameters

  • enc: encoder object.
  • factor: upsampling factor to configure (1, 2, 4 or 8; for 1 this function has no effect at all)
  • mode: upsampling mode to use for this upsampling:
    • -1: default (good for photographic images, no signaling overhead)
    • 0: nearest neighbor (good for pixel art)
    • 1: ‘pixel dots’ (same as NN for 2x, diamond-shaped ‘pixel dots’ for 4x/8x)

§Returns