Function convert_raw_bytes 

pub fn convert_raw_bytes(
    src: &[u8],
    src_type: RasterDataType,
    dst: &mut [u8],
    dst_type: RasterDataType,
    rounding: FloatToIntRounding,
) -> Result<()>

Converts raw raster bytes of src_type into raw bytes of dst_type, in a single pass and without allocating.

The byte-level counterpart of convert_raw_into. Prefer the typed version whenever the destination type is known at compile time; this one exists for dynamically typed destinations and for the complex data types, which have no RasterElement impl.

Neither slice needs any particular alignment.

Errors

Returns OxiGeoError::InvalidParameter if either slice is not a whole number of samples, or if the two sample counts differ.

Examples

use oxigeo_core::buffer::{FloatToIntRounding, convert_raw_bytes};
use oxigeo_core::types::RasterDataType;

let src: Vec<u8> = [200u16, 1000, 65_535]
    .iter()
    .flat_map(|v| v.to_ne_bytes())
    .collect();
let mut dst = vec![0u8; 3]; // three UInt8 samples

convert_raw_bytes(
    &src,
    RasterDataType::UInt16,
    &mut dst,
    RasterDataType::UInt8,
    FloatToIntRounding::Nearest,
)?;

// 1000 saturates to 255 instead of wrapping to 232.
assert_eq!(dst, vec![200, 255, 255]);