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encode_precomputed_htj2k_53

j2k_native

Function encode_precomputed_htj2k_53 

Source 
pub fn encode_precomputed_htj2k_53(
    image: &PrecomputedHtj2k53Image,
    options: &EncodeOptions,
) -> Result<Vec<u8>, &'static str>
Expand description

Encode precomputed reversible 5/3 wavelet coefficients into an HTJ2K codestream.

This experimental entry point reuses the existing quantization, HT block coding, packetization, and codestream writer stages. It bypasses the encoder’s forward DWT stage by supplying precomputed DWT output through the internal stage hook. Coefficients are expected in the same sample domain as the native encoder’s FDWT input: unsigned components are already level shifted by subtracting 2^(bit_depth - 1).