Expand description
JPEG-to-HTJ2K coefficient-domain transcode workflow.
Modules§
- accelerator
- Optional acceleration hooks for coefficient-domain transform stages.
- dct53_
2d - Constrained 2D DCT to 5/3 wavelet experiments.
- dct97_
2d - Constrained 2D DCT to irreversible 9/7 wavelet transforms.
- htj2k97_
codeblock_ oracle - Shared scalar oracle: float 9/7 bands into prequantized HTJ2K code-blocks.
Structs§
- Batch
Transcode Report - Aggregate report for multi-tile transcode.
- DctGrid
Error - Error returned when a DCT block grid cannot cover the requested component.
- Encoded
Transcode - Encoded transcode output and validation/report metadata.
- Encoded
Transcode Batch - Batch transcode output. Tile-level parse/encode failures are preserved so a WSI ingest queue can continue past isolated bad tiles.
- Jpeg
Tile Batch Input - One JPEG tile input for batch transcode.
- Jpeg
ToHtj2k Encode Options - HTJ2K encode options used after JPEG coefficient-domain wavelet bands are produced.
- Jpeg
ToHtj2k Options - Options for the experimental JPEG-to-HTJ2K path.
- Jpeg
ToHtj2k Transcoder - Reusable experimental JPEG-to-HTJ2K transcoder state.
- Resident
Buffer Ref - Borrowed, backend-visible memory range with a caller-owned lifetime.
- Resident
Codestream Buffer - Resident codestream buffer descriptor.
- Resident
Component Geometry - Per-component geometry shared by resident handoff descriptors.
- Resident
DctGrid Layout - Layout metadata for a resident JPEG DCT-grid descriptor.
- Resident
DwtSubband - Resident projected DWT subband descriptor.
- Resident
DwtSubband Layout - Layout metadata for a resident DWT subband descriptor.
- Resident
Jpeg DctGrid - Resident JPEG DCT coefficient grid descriptor.
- Resident
Sample Info - Sample precision metadata for resident handoff buffers.
- Resident
Sampling - Component sampling factors preserved through JPEG-to-HTJ2K transcode.
- Transcode
Component Report - Per-component transcode geometry preserved in the generated codestream.
- Transcode
Pipeline Map - Stage-by-stage transcode residency map derived from existing timings.
- Transcode
Pipeline Stage Report - One stage in a transcode pipeline residency map.
- Transcode
Report - Transcode summary for validation and benchmarking.
- Transcode
Resident Stage Recommendation - Recommended next stage to evaluate for Metal residency.
- Transcode
Timing Report - Detailed timing and dispatch counters for JPEG-to-HTJ2K transcode.
Enums§
- Encode
Progression Order - Supported JPEG 2000 progression orders for the lossless encode facade.
- Jpeg
ToHtj2k Coefficient Path - Experimental production path used to generate HTJ2K wavelet coefficients.
- Jpeg
ToHtj2k Error - Error returned by the experimental transcode path.
- Resident
Color Model - Color interpretation carried by a resident transcode handoff buffer.
- Resident
DctCoefficient Order - Coefficient ordering used by a resident JPEG DCT-grid buffer.
- Resident
DwtSubband Kind - Wavelet subband represented by a resident DWT buffer.
- Resident
Handoff Error - Error returned by resident transcode handoff descriptor constructors.
- Transcode
Pipeline Stage Kind - Logical stages in the JPEG-to-J2K/HTJ2K transcode pipeline.
- Transcode
Stage Processor - Observed residency for a transcode stage.
- Transcode
Validation Classification - Classification for optional coefficient-validation metrics.
Constants§
- JPEG_
TO_ HTJ2K_ LOSSY_ 97_ QUANTIZATION_ SCALE - Default irreversible quantization multiplier for JPEG direct 9/7 HTJ2K.
Functions§
- jpeg_
to_ htj2k - Transcode a constrained baseline grayscale JPEG tile into an HTJ2K codestream using direct DCT-domain wavelet coefficients.
- jpeg_
to_ htj2k_ batch - Transcode many JPEG tiles into HTJ2K codestreams.
Type Aliases§
- Transcode
Validation Metrics - Error metrics from an optional validation oracle.