Struct JpegToHtj2kTranscoder 

pub struct JpegToHtj2kTranscoder { /* private fields */ }

Reusable experimental JPEG-to-HTJ2K transcoder state.

Create one value per worker thread and reuse it across many tiles to keep scratch buffers allocated between calls. The scalar math and output are the same as jpeg_to_htj2k.

Implementations

impl JpegToHtj2kTranscoder

pub fn transcode( &mut self, bytes: &[u8], options: &JpegToHtj2kOptions, ) -> Result<EncodedTranscode, JpegToHtj2kError>

Transcode a constrained baseline JPEG tile into HTJ2K using this instance’s reusable scratch buffers.

pub fn transcode_with_accelerator<A: DctToWaveletStageAccelerator>( &mut self, bytes: &[u8], options: &JpegToHtj2kOptions, accelerator: &mut A, ) -> Result<EncodedTranscode, JpegToHtj2kError>

Transcode with an optional stage accelerator.

Accelerators may handle direct DCT-grid projection stages and return None for scalar fallback. Integer-direct 5/3 is offered in same-geometry batches before falling back to per-component work.

pub fn transcode_with_accelerators<A: DctToWaveletStageAccelerator, E: J2kEncodeStageAccelerator>( &mut self, bytes: &[u8], options: &JpegToHtj2kOptions, transform_accelerator: &mut A, encode_accelerator: &mut E, ) -> Result<EncodedTranscode, JpegToHtj2kError>

Transcode with separate transform-stage and HTJ2K encode-stage accelerators.

pub fn transcode_batch( &mut self, tiles: &[JpegTileBatchInput<'_>], options: &JpegToHtj2kOptions, ) -> Result<EncodedTranscodeBatch, JpegToHtj2kError>

Transcode many JPEG tiles, preserving per-tile failures in the returned batch. Integer-direct 5/3 groups same-geometry components across tiles before calling the accelerator.

pub fn transcode_batch_with_accelerator<A: DctToWaveletStageAccelerator>( &mut self, tiles: &[JpegTileBatchInput<'_>], options: &JpegToHtj2kOptions, accelerator: &mut A, ) -> Result<EncodedTranscodeBatch, JpegToHtj2kError>

Transcode many JPEG tiles with an optional stage accelerator.

pub fn transcode_batch_with_accelerators<A: DctToWaveletStageAccelerator, E: J2kEncodeStageAccelerator>( &mut self, tiles: &[JpegTileBatchInput<'_>], options: &JpegToHtj2kOptions, transform_accelerator: &mut A, encode_accelerator: &mut E, ) -> Result<EncodedTranscodeBatch, JpegToHtj2kError>

Transcode many JPEG tiles with separate transform-stage and HTJ2K encode-stage accelerators.

pub fn dct_block_scratch_capacity(&self) -> usize

Current capacity of the reusable DCT block conversion scratch.

This is exposed for benchmark and validation harnesses while the API is experimental.

pub fn integer_idct_block_scratch_capacity(&self) -> usize

Current capacity of the reusable integer block-local IDCT sample cache.

This cache stores level-shifted 8x8 block samples for the integer-direct path. It is block-local scratch, not a full spatial image plane.

Trait Implementations

impl Debug for JpegToHtj2kTranscoder

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for JpegToHtj2kTranscoder

fn default() -> JpegToHtj2kTranscoder

Returns the “default value” for a type.