* TIFF: open YCbCr images as RGB (#10316)
Scanners often write JPEG-compressed YCbCr TIFFs with 2x2 chroma
subsampling. The tiff crate decodes and upsamples them but returns raw
YCbCr samples, which the decoder rejected with "colour type YCbCr(8)".
The new tiff/ycbcr.rs converts them to RGB after decoding: JPEG data
uses the JFIF full-range BT.601 conversion (as libtiff does), other
compressions honour ReferenceBlackWhite and YCbCrCoefficients with the
TIFF defaults as fallback. 8 and 16-bit. YCbCr with extra samples, or
in other sample formats, fails with a clear unsupported error.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* Contributors: add Yuki-init's display name
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* TIFF YCbCr: test that YCbCrCoefficients set the luma weights
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* TIFF: YCbCr tags with the wrong value count use the defaults
tag_f64s now returns None unless the tag holds exactly n values, so a
YCbCrCoefficients or ReferenceBlackWhite tag with extra values falls
back to the TIFF defaults instead of being truncated.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Lrgj5pnShYtsSnrsZq5iRn
* TIFF YCbCr: tests for tiled JPEG with ICC, big-endian 16-bit and planar
Covers the layouts the review asked for: a tiled 4:2:0 JPEG file with an
embedded profile (checked against an independent JPEG decoder), a
big-endian 16-bit file, and planar data in both byte orders.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Lrgj5pnShYtsSnrsZq5iRn
* TIFF YCbCr: cite the formula sources and pin the green-channel choice
Documents where the conversion comes from: TIFF 6.0 Section 21
(YCbCrCoefficients, pp. 90-91) and libtiff's tif_color.c
(TIFFYCbCrToRGBInit, TIFFYCbCrtoRGB). Red and blue follow the spec;
green follows libtiff and adds Y unscaled, which matches the spec only
when the luma weights sum to 1. The module doc records this as a
deliberate compatibility choice, and a new test pins it: with weights
0.25/0.25/0.25, mid gray stays (128, 128, 128).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Lrgj5pnShYtsSnrsZq5iRn
* Codecs README: YCbCr TIFFs with three 8- or 16-bit samples decode to RGB
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Lrgj5pnShYtsSnrsZq5iRn
* Format tiff_ycbcr tests with rustfmt
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* test(tiff): compare grouped YCbCr decoding and update support notes
* style(tiff): align grouped decode call with test formatting
* style(tiff): apply repository rustfmt to grouped YCbCr regression
---------
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: FredApps <153173854+FredApps@users.noreply.github.com>
Co-authored-by: FredApps <FredApps@users.noreply.github.com>
Conflicts resolved as unions of both sides: codecs re-exports (PngRows + TiffBands), smart_cmds source imports
(main's source_surface_from_buffer and cache API with #8571's svg_source_image_in/convert_svg_source; main's
duplicate rendering import dropped), io flat.rs test modules (#8536's banded TIFF tests and main's PNG ones),
menus/invoke.rs (#8571's smart SVG intercept and main's layer.selectUnderCursor), state.rs (#8311's
type_box_overflow and main's type_insertion_style), the canvas_geom test keeps the is_finite guard, docs
status lines keep both change lists, i18n catalogs keep both sides' rows (hi.tsv: main's wording where both
added the same string).
Port behavior and regression coverage into current modules; preserve current upstream behavior.
Integrate lossless export-only JXL and independent decoder regression matrix, preserving current JPEG/TIFF save extensions and 12-bit/arithmetic JPEG decoder dependency.
The new plausibility check refused valid files that main opens:
- EXR DWAA/DWAB parts: they go past 2^16:1 (a flat 8192x4320 DWAB frame
with 12 alpha-scheme mattes is 29,948 bytes, 75,629:1; run-length
channels zlib-packed on top reach about 132,000:1). DWA parts now get
2^18:1, so a header of a few hundred bytes can ask for about 100 MB,
not gigabytes.
- BMP RLE8/RLE4: end-of-line, end-of-bitmap and delta escapes leave pixels
unwritten, so no ratio bounds a valid file (an EOB-only 4000x4000 RLE8 is
1,080 bytes). Skipped like HDR.
- GIF: the decoder's size is the logical screen, which needs no data (a
4000x4000 screen with a 1x1 frame is 35 bytes). The first frame must be
backed, and the screen only past 256 MiB, so a 35-byte GIF still can't
declare a 30000x30000 screen.
The declared-size products saturate: a Radiance header of 2^31 x 2^31
read without limits overflowed u64 in debug builds.
Co-authored-by: FinnNk <1424666+FinnNk@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A decode kept the first MAX_EXTRA_SAMPLES (16) extra samples and dropped
the rest without a warning, though files with up to 64 samples a pixel
open: an RGB TIFF with 20 extra samples opened with 16 and no notice, and
a save then lost the other 4. The decode now adds ExtraSamplesOverLimit
with the count left out.
Found by CodeRabbit on #9386.
Co-authored-by: Jason DeBoever <615848+jasallen@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The extra-sample budget check failed the whole decode, so a TIFF whose
image fits max_alloc but whose extra channels don't (e.g. 12000x8000
RGB8 with 5 alpha channels under wasm's 1 GiB limit) no longer opened,
though main opens it. Now the image decodes without the extra samples
and carries a DecodeWarning::ExtraSamplesDropped.
ExtraSamples values above 2 are reserved (TIFF 6.0, p. 31); they now
read as 0 (unspecified), so a save never writes a reserved value back.
Co-authored-by: jasallen <615848+jasallen@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The stack carried #7415's codecs code from before its last review. This
brings in 1c5343d5, approved by FredApps: every TIFF extra plane must be
exactly width x height x sample bytes, with its two regression tests.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
psd_import.rs keeps main's warning for an incomplete merged extra channel
next to the PR's Photoshop spot polarity. people.toml takes main's entries
plus jasallen's own. Docs take both sides' status lines and revision rows;
docs/scorecard.md is regenerated.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Photoshop reads and writes IFF; PhotoCraft opened Amiga IFF/ILBM files
but had no writer. Saving as .iff now writes a FORM ILBM with a BMHD and
a ByteRun1-compressed BODY of 24 bitplanes (red, green and blue, least
significant bit first), one plane row at a time. An image with alpha
also gets a mask plane (masking 1): alpha of 128 or more is opaque, and
when any pixel is not fully opaque the export warns that alpha is
reduced to on/off transparency. Gray is expanded to RGB, 16-bit and
float images are reduced to 8 bits, and images wider or taller than
65535 pixels are refused.
The reader also opens 24-bitplane ILBMs, so a saved file reopens with
the same pixels. A transparent color index in a 24-bitplane file is
refused as unsupported.
IFF leaves ASYMMETRIC_EXCEPTIONS, Save As offers Amiga IFF, and the
codecs README, file-format parity and G10 are updated.
Limits::banded() lifted the 2^30 px cap, and the only failure left was a
tile allocation error. Linux overcommits, so the tiles were allocated
anyway and writing them had the out-of-memory killer end the app and
every open document. A valid all-black Deflate RGB8 TIFF declaring
100,000 x 100,000 px (30 GB of pixels) is a few tens of MB on disk and
passes the bomb guard.
- io memory.rs: memory::available() is MemAvailable plus free swap on
Linux, capped by the process's cgroup v2 memory.max (and those above
it) and memory.swap.max; None elsewhere (Windows refuses past its
commit limit, which the importer already reports). check_fits refuses
when the need plus a 512 MiB reserve doesn't fit.
- tiff_to_document checks the layer's tiles plus the working copies of
one group before allocating anything: "not enough memory to open this
100000 x 100000 px image: it needs about 41.7 GB and 7.8 GB is free".
- codecs TiffBands::group_bytes gives the largest group; a single-strip
file is one group (the whole image), which the check now counts.
- TiffBands puts Truncated before MorePages, as the whole-image decode.
- raster: try_write_interleaved reports a wrong length as
AllocationError::LengthMismatch { expected, got }, not SizeOverflow.
- Comments and docs no longer name another editor.
Tests: io a_tiff_larger_than_free_memory_is_refused (300,000^2 black
RGB8, Linux) was OOM-killed in a 4 GB cgroup without the check; memory
unit tests for the policy and the meminfo/cgroup parsing; codecs
a_cut_off_page_of_several_warns_in_the_whole_image_order and
group_bytes_is_the_largest_group_handed_over.
The public `ExtraSample` contract is one sample per pixel in the image's sample
type, but the writer only stopped when a requested slice was missing, so an
oversized plane was silently truncated and a short one was dropped mid-image.
`Image::convert` leaves a plane whose length does not match the image alone
(deliberately: importers drop such a plane with a warning), so encoding a Lab
F32 image also reinterpreted a wrong-sized plane at the file's 16 bits.
Check every plane against width * height * sample.bytes(), with checked
arithmetic, at both ends: on the source image before `converted` brings it to
the plan's sample type, and on the image actually written, which the Lab path
re-types. A plane of any other length is a CodecError::Encode naming the plane,
its length and the length the image needs.
Regressions: too long, too short and empty planes at 8 bits, and a 7- or 9-byte
plane for a two-pixel Lab F32 image, which the U16 conversion used to accept.
The guard now bounds the decoded size by the bytes the strip tables hold
(x4096), not by the file length. CCITT Group 4 codes a blank row in one
bit, so a blank 600 dpi A4 landscape (7016x4961) or A3 page compresses
past 4096:1. With ordinary metadata or other pages in the file, main
opened such a page; this PR refused it ("the strips or tiles in this
file hold 624 bytes, too few for a 7016x4961 image"). Group 4
(compression 4, the only CCITT variant the decoder reads) now gets a
ratio of the strip or tile width, capped at the decoder's 65535.
Test: a_blank_fax_page_wider_than_4096_px_passes_the_bomb_guard fails
without the change, and checks a Group 4 strip too short for its page
is still refused.
Co-authored-by: wanikhawar <28915582+wanikhawar@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
main gained a guard refusing truncated scans too short for their
frame; this branch's own header check refused those files first with a
different error. Drop it and widen main's guard instead: a complete
file is measured on its length (the scan walk may stop early on odd
marker layouts), a truncated one on its scan data as before. A frame
needs at least a one-bit DC code per 8x8 block, so 2048 pixels a byte
stays far above any real JPEG.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* fix(codecs): WebP export keeps the resolution
Every WebP export with metadata warned that the resolution would be
dropped, and lost it unless the image already had EXIF with resolution
tags. WebP has no resolution field of its own, so both encoders now
write the resolution into EXIF, adding the tags (or a minimal EXIF
block when the image has none), and WebP reports DPI support.
Part of #2399
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* fix(codecs): report WebP DPI as dropped when the source EXIF can't be parsed
That block is written as it is rather than replaced, so its metadata
survives and the lost resolution is reported. The metadata test also
checks the rest of the EXIF (Orientation) survives.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* test(codecs): spell the WebP metadata test's bytes as escapes
The Orientation tag and the unparseable EXIF block were raw control
bytes, which also made git keep the file's CRLF line endings; both are
escapes now and the file is LF again.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* fix(codecs): no EXIF block just for WebP's default 72 ppi
A WebP without EXIF already opens at 72 ppi, so writing a minimal EXIF
for the default only turned every web export into the extended (VP8X)
container (and broke the automation test expecting a simple lossy file).
EXIF the image already has still gets its resolution tags updated.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
* fix(codecs): WebP DPI kept by XMP isn't reported as dropped
When the image's EXIF can't be parsed but its XMP records the
resolution, the WebP keeps it through XMP, which readers check first.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
DPX at 10 or 12 bits and Cineon (always 10) are planned as U16, so
DepthReduced, which compares sample types, never fired: a 16-bit document
saved at 10 bits lost six bits per sample silently, and a float one was
told it would be reduced to 16-bit.
FidelityWarning::BitsReduced { from, bits } names the stored depth. Float
samples always get it; U16 ones only when some sample is not already a
code value at that depth, so a frame opened from a 10- or 12-bit file
saves back without a warning. U8 widens losslessly and stays silent.
Conflicts: crates/codecs/src/image.rs (main's new `cicp` field next to
this branch's converted extra-sample planes in `meta`) and
contributors/people.toml (main's new entries kept, jasallen's added after
them). The codecs integration tests moved into tests/it/ on main; this
branch's test changes followed them.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Main's own PCX and XPM preflight (827d949af) replaces this branch's PCX
ratio check and XPM row check; the PCX test now expects main's refusal.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
JPEG, the image-crate formats (GIF, BMP, TGA, ICO, QOI, HDR), PCX, XPM and
flat EXR sized their output buffers from header dimensions, checked only
against the absolute limits. A few-KB file could declare ~3 GB and the
decoder allocated it before finding the data missing (on wasm that aborts
the tab). Each now refuses, before allocating, a file too small to hold
the declared image at that format's best compression ratio, the guard
PNG, WebP and IFF already use. XPM checks its text rows up front.
Fixes#8597
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- gpu: the test modules share one GPU_LOCK, and timing and vector_mask
take it too, so one process drives one wgpu device at a time.
- ui-egui: the wgpu tests in pattern_preview_canvas, adjust_preview_gpu,
marquee_autoscroll and layout_perf take gpu_lock().
- affinity compound_limits: the child process selects its test by the
module path (compound_limits::<name>); with --exact, the bare name
matches no test and the child passes without running the check.
- xtask scorecard reads crates/io/tests/it/corpus.rs.
- Docs and comments name the new test paths and the --test it filters.
Every tests/*.rs file is its own executable that links the whole crate
graph. Move each crate's test files into tests/it/ as modules of one
tests/it/main.rs; helper modules under tests/common move with them.
These keep their own binary (own process):
- engine panic_hunt: a process-wide panic hook counts every panic.
- engine text_gamma: changes the process-wide text gamma.
- engine smart_filter_stages, mask_cache_purge: assert on global caches.
- codecs pnm_peak_memory: reads the process's peak RSS.
- photocraft mac_menu_appkit: harness = false.
crates/engine/src/file_cmds.rs: batch keeps the save-point closure (takes the output path) and also copies the session's authorize hook into each scratch session, as main now does.
crates/raw/src/sensor.rs: both sides cap the memory of retained tiles; kept the existing retained_segment_bytes check (checked multiplication, same limit) and dropped main's duplicate inline loop.
The in-place path reads an uncompressed strip straight into its output
rows; on EOF the bytes read before the end were kept as if the strip
were zero-filled. Clear the band, as the scratch path already does.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The banded decoder has no whole-image max_alloc, so a file padded to a
plausible length with every strip pointing past its end could declare an
image of hundreds of GB. The guard now sums the bytes the strip or tile
tables point at inside the file (capped at the file length) instead of
using the file length.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNm5ZNBFtLZ2cZNaPnYsXV
The 117,504 x 22,464 px banner from #8456 failed with "2639609856 pixels
exceed max 1073741824": the decoder built the whole image in one buffer
and the importer copied it into tiles, so the decode was capped at 2^30 px.
- codecs: decode_ifd split into prepare + decode; new TiffBands decodes
~64 MiB groups of bands in parallel and hands each group, upright, to
the caller. Limits::banded(): 300,000 px a side on 64-bit, max_alloc per
group; 32-bit targets keep the whole-image check.
- raster: Surface::try_write_interleaved (fallible, tiles on all cores).
- io: import_tiff_page decodes flat pages through TiffBands straight into
the layer, converting pieces of rows on all cores; layered TIFFs keep
the whole-image path.
Release, 20 threads: 36 MP 220 -> 52 ms; 30,000^2 6.8 s / 6.43 GB peak ->
1.1 s / 3.86 GB; 35,000^2 and the 2.64 GP banner now open (1.5 s, 3.3 s).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XNm5ZNBFtLZ2cZNaPnYsXV
xmp_values advanced its cursor only past the matched key, so the
value-closing search (find(close)) rescanned the remaining packet for
every property-like substring. Repeating text such as
' tiff:ResolutionUnit>' inside the packet produced quadratic CPU work
even when no real resolution property existed.
Advance the cursor past each located value; a missing close delimiter
means the value is unterminated, so no later value can parse and the
scan stops. Valid multi-value extraction is unchanged.
Finding: 6ce55e33-27f0-4fb9-a22f-737382e1d328 (CWE-407)
apps/photocraft/src/services.rs: SAVE_FILTERS keeps the DDS entry from main and the PR's Cineon entry.
crates/codecs/README.md: Cineon table row from the PR (read and write), then main's DICOM and Amiga IFF rows.
crates/codecs/src/format.rs: caps keep the PR's Cineon (read and write) and main's Dicom and Iff rows.
crates/codecs/src/lib.rs: encode keeps the PR's Cineon arm and main's Dicom and Iff arms.
docs/file-format-parity.md: header kept from main with the Cineon write item added; Cineon / DPX row from the PR, DICOM row from main; the PR's change-log line added once at the top.
docs/gaps.md: header kept from main with the Cineon write item added; Missing list without 'Cineon write'; the PR's Cineon progress line replaces main's read-only one; the PR's change-log line added once at the top.
docs/file-format-parity.md: header line kept from main with the animated WebP item added in front; BMP row from main; WebP row from main plus the PR's animation sentence; the PR's change-log line added once, above the first 2026-10-14 row.
apps/photocraft-web/src/web.rs: OPEN_EXTS kept main's list (with the DICOM extensions) and added iff, lbm, ilbm.
apps/photocraft/src/services.rs: OPEN_EXTS kept main's list (with the DICOM extensions) and added iff, lbm, ilbm.
crates/codecs/README.md: kept both the DICOM and the Amiga IFF table row and section.
crates/codecs/src/format.rs: kept both the Dicom and the Iff variants in every match, detect runs the DICOM check then the IFF check, Format::ALL length re-counted (22).
crates/codecs/src/lib.rs: one use line importing dicom and iff; both decode and encode arms kept.
docs/gaps.md: header line kept from main, with the PR's 'Cineon and Amiga IFF read' wording.
apps/photocraft-web/src/web.rs: OPEN_EXTS kept main's list and added dcm, dicom, dc3 after cin.
apps/photocraft/src/services.rs: OPEN_EXTS kept main's list and added dcm, dicom, dc3 after cin.
A TIFF's extra samples other than the image alpha (spot colours and
further alpha channels, ExtraSamples 0) were dropped on decode, and the
encoder could write only one alpha sample. They now travel through
`Metadata::extra_samples`, one plane per sample with its ExtraSamples
value as `kind`.
- Decode: chunky and planar, strips and tiles, every depth, Gray, RGB,
CMYK and Lab. At most 16 (`MAX_EXTRA_SAMPLES`) are kept; the planes
count against `Limits::max_alloc` and are allocated fallibly. Layout
and pixel data are unchanged: the first alpha sample (1 or 2) is still
the image alpha.
- Encode: extra samples follow the colour and alpha samples, with their
kinds in the ExtraSamples tag; Lab as CIELab (float Lab at 16 bits).
More than 16, or a plane of the wrong size, is an error.
- `Image::convert` converts the planes with the sample type, and
`Image::oriented` turns them with the image.
- main's `extra_samples_that_are_not_alpha_are_dropped` becomes
`extra_samples_that_are_not_alpha_are_kept_apart`: same inputs, same
layout and data, and it now checks the extra planes.
From #3121 (split out of #7415).
Co-authored-by: Zer0C00L01 <12090083+Zer0C00L01@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Main added DDS saving (#5993): DDS Options, and FormatChoices carrying the
Targa and DDS answers through every save path (this branch's SaveChoices
carried Targa and JPEG). Resolved by keeping main's name and making it
the one struct for all three answers.
- lib.rs: FormatChoices { tga_bits, dds, jpeg } with from_params (strict),
from_step (lenient JPEG read of a recorded step), apply and record;
main's separate block is folded in. Both prompts (dds_options and
jpeg_options) are kept everywhere: save_to asks Targa, then DDS, then
JPEG Options; save_options_open covers all four. save_in_place takes
main's (path, choices) signature and records the plain-Save step with
plain_save_step for JPEG plus the Targa/DDS answers (save_in_place_with
folded into it). journal_as_plain_save relabels a parked Targa, DDS or
JPEG prompt and keeps tgaBits/dds*/quality/jpegFormat when dropping the
path. replay_save reads choices with from_step.
- SAVE_OPTIONS_OPEN names all four prompts; DDS Options uses it too.
- targa_options_ui: main's plain-Save step (no path) through this
branch's write_answered_save. JPEG Options gets main's Enter-on-a-
focused-Cancel fix.
- view_cmds Save a Copy asks Targa, DDS, then JPEG Options; write_copy
takes FormatChoices.
- control.rs: both app.save tests (JPEG and DDS) kept.
- engine file_cmds: SaveOpts keeps jpeg_format and dds; param docs list
both jpegFormat and ddsCompression/ddsMipmaps. CLI: both --jpeg-format
and --dds-compression/--dds-mipmaps. codecs re-exports JpegFormat and
DdsCompression/DdsOptions.
- docs/book: both entries kept (control-protocol app.save lists both).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
DDS textures can now be saved, not just opened: uncompressed (BGRA, BGRX, L8, A8L8; lossless) or BC1/BC2/BC3 (DXT1/3/5) from a clean-room block encoder, with an optional box-filtered mip chain, in the legacy header. Save As and Save a Copy ask with DDS Options; scripts pass `ddsCompression`/`ddsMipmaps` (file commands, control `app.save`, RPC `doc.save`, MCP `doc_save`/`doc_export`), and the CLI takes `--dds-compression`/`--dds-mipmaps`. Targa and DDS answers travel together as `FormatChoices` through the Save As flow.
Review follow-ups:
- File › Save behind DDS or Targa Options records a plain Save with its answer, and replaying `file.save` applies it (#3531).
- The block encoder finds the principal axis from every channel, so a channel that varies on its own can't hide the others' variation.
- DDS joins the shared round-trip suite; the header is built before the output buffer is allocated.
- Enter on a focused Cancel in DDS, Targa or TIFF Options cancels instead of saving.
Save As and Save a Copy to a JPEG now ask for JPEG Options before writing,
as Photoshop does. Re-creates #4330 on current main and folds in the
unique parts of #5580 (#5563).
- codecs: `JpegFormat` (Baseline, Optimized, Progressive) on
`EncodeOptions`. Progressive writes SOF2. Baseline Optimized fits the
Huffman tables only at 4:4:4 (Gray, CMYK) or with Progressive: fitted
tables make the baseline scans non-interleaved, which zune-jpeg 0.5.15
decodes wrongly with 4:2:0 chroma (zune-image#419), as Save for Web
already works around.
- engine: a `jpegFormat` save param (file.saveACopy, Batch, Image
Processor, Layers to Files and every SaveOpts user; anything but the
three names is BadParams before writing) and a shared 0–12 -> 1–100
`jpeg_quality()` that maps NaN/inf to 100.
- ui-egui: `jpeg_options_ui` (Quality 0–12 with Low/Medium/High/Maximum
presets, Format Options), parked like Targa Options. It starts at the
opened JPEG's own quality (`file_encoding`, #4032), else the Export
preference; left there, OK writes that quality exactly and the step
records no `quality`. `SaveChoices` (Targa bits + JPEG) replaces the
bare `tga_bits` through file.save / file.saveAs / app.save, replay and
Save a Copy; automation never prompts. `write_answered_save` is shared
with Targa Options. `park_at` + `Start` let any save seed the prompt.
A File › Save that confirms the document's own flat JPEG is still
journalled as a plain `file.save` (#3531).
- CLI: `--jpeg-format`.
- i18n: five new strings in all 20 catalogs (#4330's duplicate de/es/zh
`Low`/`High` rows dropped: main has them since #4008).
- Docs: book raster-formats JPEG bullet, control protocol, file-format
parity, gaps G10, target-app parity; scorecard FILE-215-19 done.
Co-authored-by: SckraT <70698629+SckraT@users.noreply.github.com>
Co-authored-by: PierrunoYT <95778421+PierrunoYT@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
David Mann
Khawar Zamman Wani
David MannandClaude Opus 5.5
.CooCoo
skylar taylor-barrick
Khawar Zamman Wani
Finn NewickandClaude Opus 5.5
Przemyslaw Majdak
Jason DandClaude Opus 5.5
Dylan M. Taylor
aiongg
Higgs32584andClaude Opus 5.5
Vikram Bhaskaran
Guillem Hermida
