LR-HDR-EXPORT: HDR AVIF (10-bit Rec. 2020 PQ)

`encode_avif_pq`: linear Rec. 2020 with SDR white at 1.0 → PQ (SDR white at
203 cd/m², BT.2408), BT.2020 NCL YCbCr 4:4:4, 10-bit, with CICP nclx
(9/16/9, full range) and a clli box. ravif fixes the sRGB curve, so this
drives the rav1e + avif-serialize it already uses (no new crates).

Export: AVIF with `hdr` renders the HDR edit in Rec. 2020 and writes PQ.
Photos without an HDR edit export as before, in every format. CoreImage
decodes the file as HDR (same 3.1 % of the frame above SDR white as the gain
map JPEG of the same edit).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
akvaithi 2026-10-05 14:55:59 -05:00
parent af06f2dbc1
commit 7828f93c32
12 changed files with 203 additions and 23 deletions

2
Cargo.lock generated
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@ -3026,6 +3026,7 @@ dependencies = [
name = "lightcraft-codecs"
version = "0.5.0"
dependencies = [
"avif-serialize",
"bytemuck",
"image",
"image-webp",
@ -3039,6 +3040,7 @@ dependencies = [
"moxcms 0.9.1",
"png",
"proptest",
"rav1e",
"ravif",
"rayon",
"serde",

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@ -68,6 +68,9 @@ moxcms = { version = "0.9", default-features = false, features = ["lut"] }
jxl-oxide = { version = "0.12", default-features = false }
zune-jpegxl = { version = "0.5", default-features = false, features = ["std"] } # MIT/Apache-2.0/Zlib lossless JXL encoder (test fixtures only)
ravif = { version = "0.13", default-features = false, features = ["threading"] } # no "asm": it needs nasm (non-Rust)
# HDR AVIF (PQ): ravif fixes the sRGB transfer curve, so HDR files drive its rav1e + avif-serialize directly
rav1e = { version = "0.8.1", default-features = false, features = ["threading"] }
avif-serialize = "0.8.6"
# gpu (crates/gpu; native backends only, no GL: everything stays pure Rust)
# SAM 3 inference (lightcraft-segment). 0.9.2: later releases pull `tokenizers` with the

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@ -309,7 +309,7 @@ LightCraft is young and moving fast. **Where we honestly stand** (details in the
| Detail: sharpening, luminance + colour noise reduction | ✅ · AI Denoise, Super Resolution ⬜ |
| Remove / Heal / Clone spots (auto source), Visualize Spots, Red Eye and Pet Eye (auto pupil detection, catchlight) | ✅ · content-aware fill, spot pin editing 🚧 |
| Export: JPEG / PNG / TIFF / WebP / AVIF / DNG / original, sizing, file-size limit, output sharpening, naming templates, batch, metadata policy, text or image watermark | ✅ |
| HDR: HDR editing with a headroom limit, SDR rendition, Visualize HDR; export as ISO 21496-1 gain map JPEG or 32-bit float TIFF | ✅ · HDR display, AVIF HDR ⬜ |
| HDR: HDR editing with a headroom limit, SDR rendition, Visualize HDR; export as ISO 21496-1 gain map JPEG, PQ AVIF or 32-bit float TIFF | ✅ · HDR display ⬜ |
| Library persistence (crash-safe op log + snapshots, background compaction, failed saves reported), disk thumbnail cache | ✅ |
| Import: Add in place / Copy / Move, rename and folder templates, devices, duplicate detection, watched folders; Local folder browsing | ✅ |
| MCP server (headless or live app, persistent libraries), CLI, control channel | ✅ |

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@ -28,7 +28,7 @@ duplicate Local entries #22, black GPU exports on an Intel iGPU #78).
| **AI & computational** | ~15–20% | Assisted culling (focus, bursts), auto tone, HDR/panorama merge; subject/sky/background masks as classical heuristics, or the photo's own segmentation mattes when it ships them (DNG semantic masks, e.g. iPhone ProRAW's sky matte); non-destructive Bayer RAW denoise with opt-in weights on pure-Rust CPU/GPU; **faces (MVP, [docs/faces.md](docs/faces.md))**: a pure-Rust detector (a 232 KB opt-in download), opt-in recognition models (one-click download or add a file; they run on the shared pure-Rust CPU interpreter; pinned SFace/AuraFace embeddings agree with an independent reference runtime on 40 public crops; one-thread medians 34–36 / 233–252 ms (AuraFace remains expensive)), a background scan that finds and embeds faces, name suggestions, a person's page with look-alike faces to confirm, an Unnamed faces section (look-alikes together, select a group and name it at once) | Real segmentation masks (subject, sky, people, objects, landscape, depth), denoise model policy / linear RGB / quality verification, super resolution, lens blur, generative remove, natural-language search; for faces: clusters with separators between groups, small faces in large photos (the detector looks at 640 px), thresholds calibrated on live faces, writing face regions back to XMP. **Blocked on a model strategy** (licensable weights or our own training; pure-Rust inference is feasible) |
| **Workflow & library** | ~85% (single machine) | Robust catalog (journal + snapshots, background compaction, crash-tested), 85k-photo libraries stay responsive, Local browsing with automatic cleanup, XMP interop, keywords, smart albums, Move import | Opening an 85k library takes 1.7–4.7 s; no cloud sync (out of scope), no tablet companion (#74, roadmap), shared albums, publish services, tethering |
| **Classic modules** | ~30% | Geotagging from GPX track logs, soft proofing (partial), slideshow (basic) | **Map view, Book, Print, Slideshow module, Web, publish services**: ~40 tracker rows ⬜ |
| **HDR & video** | ~25% | HDR editing (headroom limit, SDR rendition, Visualize HDR); gain map JPEG and float TIFF export | On-screen HDR display, AVIF PQ/HLG export, HDR settings from crs XMP; video play/trim/edit/export |
| **HDR & video** | ~25% | HDR editing (headroom limit, SDR rendition, Visualize HDR); gain map JPEG, PQ AVIF and float TIFF export | On-screen HDR display, HLG, HDR settings from crs XMP; video play/trim/edit/export |
| **Platform & robustness** | ~70% | macOS native; Windows/Linux builds; web via WASM; no-panic lints workspace-wide, `unsafe` confined to `crates/sysmem`; failed saves are reported; GPU errors fall back to CPU | Windows installer UI unverified on Windows (PR #79); GPU path proven only on Apple + user reports; English, Simplified/Traditional Chinese, Japanese, Brazilian Portuguese and German UI (see docs/localization.md); remaining technical errors; Traditional Chinese uses the Simplified Chinese font until craft-fonts has a TC face; accessibility partial; headless UI tests time out under machine load |
### By kind of user
@ -89,7 +89,7 @@ yet guarantee original-pixel detail; visible-region rendering remains a gap (LR-
| M7 | Detail | sharpening + masking preview, luminance/colour NR, Denoise, Raw Details, Super Resolution | 6–10 | 🚧 (sharpening, luminance/colour NR ✅; AI Denoise 🟡 (Bayer, optional weights; policy/fidelity open); Raw Details, Super Resolution ⬜) |
| M8 | Heal / Remove | content-aware remove (PatchMatch), heal, clone, brush spots, visualize spots, red/pet eye | 6–10 | 🚧 (heal, clone, auto source, visualize spots, red/pet eye ✅; PatchMatch remove ⬜) |
| M9 | Presets, profiles, versions, sync | preset browser + amount, create/import presets, profile browser, versions, history, copy/paste/sync settings | 5–8 | ✅ |
| M10 | Export & share | export dialog (JPEG/PNG/TIFF/DNG/AVIF/JXL/original), sizing, sharpening, metadata, watermark, naming, batch jobs, XMP sidecars, HDR export | 6–10 | 🚧 (all formats incl. DNG/original, sizing, presets, background jobs ✅; JXL encode, HDR export ⬜) |
| M10 | Export & share | export dialog (JPEG/PNG/TIFF/DNG/AVIF/JXL/original), sizing, sharpening, metadata, watermark, naming, batch jobs, XMP sidecars, HDR export | 6–10 | 🚧 (all formats incl. DNG/original, sizing, presets, background jobs, HDR gain map JPEG / PQ AVIF ✅; JXL encode ⬜) |
| M11 | RAW II | CR3, RAF (X-Trans), ORF, RW2, PEF, SRW, 3FR, IIQ + long tail; camera calibration DB; HEIC/AVIF/JXL import | 20–35 | 🚧 (CR3 lossless CRX and C-RAW, RAF uncompressed and lossless/lossy compressed, RW2 (every raw format), PEF, ORF uncompressed ✅; **camera colour calibration** 🚧 (guarded ARW, NEF, RW2 and RAF preview fitting; measured database still missing), CR3, compressed ORF ⬜) |
| M12 | AI & smart features | subject/sky/background/people/object masks, semantic search, faces/People (permissively licensed models, pure-Rust inference) | 20–40 | ⬜ |
| M13 | Merge | HDR merge (deghost), panorama (projections, boundary warp, fill edges), HDR panorama | 10–15 | ✅ |

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@ -30,6 +30,8 @@ jxl-oxide = { workspace = true, optional = true }
[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
ravif = { workspace = true, optional = true }
rav1e = { workspace = true, optional = true }
avif-serialize = { workspace = true, optional = true }
[features]
default = ["parallel", "jxl", "avif"]
@ -40,7 +42,7 @@ jxl = ["dep:jxl-oxide"]
# PhotoCraft); `cargo xtask ci` clippies and tests it (`--features heif`), releases don't ship it yet.
heif = ["dep:lightcraft-heif"]
## AVIF encoding via ravif/rav1e (pure Rust, BSD). Native targets only; a no-op on wasm32.
avif = ["dep:ravif"]
avif = ["dep:ravif", "dep:rav1e", "dep:avif-serialize"]
[dev-dependencies]
proptest = { workspace = true }

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@ -52,7 +52,7 @@ CRW, MRW, X3F) are detected so the engine can route them to `lightcraft-raw`; `d
| GIF / BMP | yes (first GIF frame) | — | via `image` |
| PSD / PSB | merged composite: 8/16/32-bit gray, RGB, CMYK, indexed, duotone (as gray); raw/RLE | — | ICC (1039), EXIF (1058), XMP (1060); ZIP-compressed composite, Lab and 1-bit unsupported |
| JPEG XL | yes (jxl-oxide, feature `jxl`, default on) | — | enum colour → rendered straight to linear Rec.2020; ICC → our ICC path; orientation applied by the decoder (reported as 1) |
| AVIF | **no** | yes (ravif/rav1e, native only, feature `avif`) | 8-bit sRGB, EXIF; no ICC in the muxer |
| AVIF | **no** | yes (ravif/rav1e, native only, feature `avif`) | 8/10-bit sRGB, EXIF; no ICC in the muxer. HDR: `encode_avif_pq` writes 10-bit BT.2020 PQ (SDR white at 203 cd/m², CICP `nclx` + `clli`) |
| HEIC/HEIF | **no** (sniff only) | — | see gaps |
| Gain map JPEG (HDR) | gain map found and decoded (`gainmap::read_jpeg`): ISO 21496-1 metadata, else Adobe `hdrgm` XMP | yes (`gainmap::encode_jpeg`) | CIPA DC-007 MPF index (gain map typed `0x050000`), ISO 21496-1 APP2 on both images, `hdrgm` + Container XMP for Android/Chrome, Apple `HDRGainMap`/`HDRToneMap` XMP; gain maps are never used as thumbnails |

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@ -363,6 +363,141 @@ pub fn encode_avif(img: &EncodeImage, quality: u8, speed: u8, meta: &EncodeMeta)
}
}
/// Absolute luminance of SDR white in an HDR file (ITU-R BT.2408 reference white), cd/m².
pub const HDR_REFERENCE_WHITE_NITS: f32 = 203.0;
/// SMPTE ST 2084 (PQ) inverse EOTF: luminance in cd/m² → signal 0..1.
pub fn pq_encode(nits: f32) -> f32 {
const M1: f32 = 2610.0 / 16384.0;
const M2: f32 = 2523.0 / 4096.0 * 128.0;
const C1: f32 = 3424.0 / 4096.0;
const C2: f32 = 2413.0 / 4096.0 * 32.0;
const C3: f32 = 2392.0 / 4096.0 * 32.0;
let y = (nits / 10_000.0).clamp(0.0, 1.0).powf(M1);
((C1 + C2 * y) / (1.0 + C3 * y)).powf(M2)
}
/// SMPTE ST 2084 (PQ) EOTF: signal 0..1 → luminance in cd/m².
pub fn pq_decode(e: f32) -> f32 {
const M1: f32 = 2610.0 / 16384.0;
const M2: f32 = 2523.0 / 4096.0 * 128.0;
const C1: f32 = 3424.0 / 4096.0;
const C2: f32 = 2413.0 / 4096.0 * 32.0;
const C3: f32 = 2392.0 / 4096.0 * 32.0;
let p = e.clamp(0.0, 1.0).powf(1.0 / M2);
((p - C1).max(0.0) / (C2 - C3 * p)).powf(1.0 / M1) * 10_000.0
}
/// Encode an HDR AVIF: `rgb` is linear light in **Rec. 2020** primaries with SDR white at 1.0
/// (`width × height × 3`). Written as 10-bit 4:4:4 BT.2020 non-constant-luminance YCbCr with the
/// PQ transfer curve, SDR white at [`HDR_REFERENCE_WHITE_NITS`], and a content light level box.
/// `quality` 1..=100, `speed` 1..=10. Native targets with the `avif` feature only.
pub fn encode_avif_pq(width: u32, height: u32, rgb: &[f32], quality: u8, speed: u8, meta: &EncodeMeta) -> Result<Vec<u8>> {
let (w, h) = (width as usize, height as usize);
let n = w.checked_mul(h).ok_or_else(|| Error::Encode("image too large".into()))?;
if n == 0 || rgb.len() < n * 3 {
return Err(Error::Encode("HDR AVIF: sample buffer too short".into()));
}
#[cfg(all(feature = "avif", not(target_arch = "wasm32")))]
{
use rav1e::prelude::*;
const K: [f32; 3] = [0.2627, 0.6780, 0.0593]; // BT.2020 NCL
let mut max_nits = 0f32;
let mut sum_nits = 0f64;
let planes: Vec<[u16; 3]> = rgb
.as_chunks::<3>()
.0
.iter()
.take(n)
.map(|c| {
let nits = c.map(|v| (if v.is_finite() { v.max(0.0) } else { 0.0 }) * HDR_REFERENCE_WHITE_NITS);
let y_nits = K[0] * nits[0] + K[1] * nits[1] + K[2] * nits[2];
max_nits = max_nits.max(nits[0].max(nits[1]).max(nits[2]));
sum_nits += y_nits as f64;
let [r, g, b] = nits.map(pq_encode);
let y = K[0] * r + K[1] * g + K[2] * b;
let cb = (b - y) / (2.0 * (1.0 - K[2])) + 0.5;
let cr = (r - y) / (2.0 * (1.0 - K[0])) + 0.5;
[y, cb, cr].map(|v| (v * 1023.0).round().clamp(0.0, 1023.0) as u16)
})
.collect();
let q = quality.clamp(1, 100) as f32 / 100.0;
// ravif's quality → quantizer curve, so qualities match the SDR AVIF path
let x = if q >= 0.82 {
(1.0 - q) * 2.6
} else if q > 0.25 {
1.0 - 0.125 - q * 0.5
} else {
1.0 - q
};
let quantizer = (x * 255.0).round() as usize;
let mut ec = EncoderConfig::with_speed_preset(speed.clamp(1, 10));
ec.width = w;
ec.height = h;
ec.time_base = Rational::new(1, 1);
ec.bit_depth = 10;
ec.chroma_sampling = ChromaSampling::Cs444;
ec.pixel_range = PixelRange::Full;
ec.color_description = Some(ColorDescription {
color_primaries: ColorPrimaries::BT2020,
transfer_characteristics: TransferCharacteristics::SMPTE2084,
matrix_coefficients: MatrixCoefficients::BT2020NCL,
});
let cll = (max_nits.ceil().clamp(1.0, 10_000.0) as u16, ((sum_nits / n as f64).ceil().clamp(1.0, 10_000.0)) as u16);
ec.content_light = Some(ContentLight { max_content_light_level: cll.0, max_frame_average_light_level: cll.1 });
ec.still_picture = true;
ec.quantizer = quantizer;
ec.min_quantizer = quantizer.min(255) as u8;
ec.speed_settings.multiref = false;
ec.speed_settings.rdo_lookahead_frames = 1;
ec.speed_settings.scene_detection_mode = SceneDetectionSpeed::None;
let e = |e: &dyn std::fmt::Display| Error::Encode(format!("AV1: {e}"));
let mut ctx: Context<u16> = Config::new().with_encoder_config(ec).new_context().map_err(|x| e(&x))?;
let mut frame = ctx.new_frame();
{
let mut it = planes.iter();
let mut fp = frame.planes.iter_mut();
let (Some(py), Some(pu), Some(pv)) = (fp.next(), fp.next(), fp.next()) else {
return Err(Error::Encode("AV1: frame has no planes".into()));
};
let (mut sy, mut su, mut sv) = (py.mut_slice(Default::default()), pu.mut_slice(Default::default()), pv.mut_slice(Default::default()));
for ((ry, ru), rv) in sy.rows_iter_mut().zip(su.rows_iter_mut()).zip(sv.rows_iter_mut()).take(h) {
for ((y, u), v) in ry.iter_mut().zip(ru.iter_mut()).zip(rv.iter_mut()).take(w) {
let Some(p) = it.next() else { break };
(*y, *u, *v) = (p[0], p[1], p[2]);
}
}
}
ctx.send_frame(frame).map_err(|x| e(&x))?;
ctx.flush();
let mut av1 = Vec::new();
loop {
match ctx.receive_packet() {
Ok(mut p) if p.frame_type == FrameType::KEY => av1.append(&mut p.data),
Ok(_) => {}
Err(EncoderStatus::Encoded | EncoderStatus::LimitReached) => break,
Err(x) => return Err(e(&x)),
}
}
use avif_serialize::constants as c;
let mut a = avif_serialize::Aviffy::new();
a.set_matrix_coefficients(c::MatrixCoefficients::Bt2020Ncl)
.set_transfer_characteristics(c::TransferCharacteristics::Smpte2084)
.set_color_primaries(c::ColorPrimaries::Bt2020)
.set_full_color_range(true)
.set_content_light_level(cll.0, cll.1);
if let Some(exif) = meta.exif {
a.set_exif(exif.to_vec());
}
Ok(a.to_vec(&av1, None, width, height, 10))
}
#[cfg(not(all(feature = "avif", not(target_arch = "wasm32"))))]
{
let _ = (quality, speed, meta);
Err(Error::Encode("AVIF encoding is not available in this build".into()))
}
}
/// 16-bit RGB(A) → 10-bit BT.601 full-range YCbCr planes (the matrix `ravif` uses for 8-bit input).
#[cfg(all(feature = "avif", not(target_arch = "wasm32")))]
fn avif_10bit(enc: &ravif::Encoder, img: &EncodeImage, s: &[u16]) -> Result<Vec<u8>> {

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@ -35,7 +35,8 @@ mod tiff_codec;
mod webp;
pub use encode::{
ChromaSubsampling, EncodeImage, EncodeMeta, Samples, TiffCompression, encode_avif, encode_jpeg, encode_png, encode_tiff, encode_webp_lossless,
ChromaSubsampling, EncodeImage, EncodeMeta, HDR_REFERENCE_WHITE_NITS, Samples, TiffCompression, encode_avif, encode_avif_pq, encode_jpeg,
encode_png, encode_tiff, encode_webp_lossless,
};
pub use sniff::{Format, sniff};
pub use space::{NamedSpace, SourceSpace, SpaceOrigin, Trc};

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@ -601,8 +601,9 @@ pub struct ExportOptions {
/// format's default (TIFF 16, everything else 8). See [`ExportOptions::effective_depth`].
pub bit_depth: Option<u8>,
/// HDR output for photos edited in HDR: JPEG as an ISO 21496-1 gain map JPEG (the SDR
/// rendition plus a gain map, so the file looks right everywhere), 32-bit float TIFF with the
/// highlights above SDR white kept. Other formats, and photos without an HDR edit, are SDR.
/// rendition plus a gain map, so the file looks right everywhere; quality as set, `limit_kb`
/// not applied), AVIF as 10-bit Rec. 2020 PQ, 32-bit float TIFF with the highlights above SDR
/// white kept. Other formats, and photos without an HDR edit, are SDR.
pub hdr: bool,
}
@ -1000,6 +1001,7 @@ impl ExportOptions {
(ExportFormat::Tiff, Some(32)) if self.hdr => OutputDepth::F32Hdr,
(ExportFormat::Tiff, Some(32)) => OutputDepth::F32Linear,
(ExportFormat::Tiff, _) => OutputDepth::U16,
(ExportFormat::Avif, _) if self.hdr => OutputDepth::F32Hdr,
(ExportFormat::Avif, Some(10 | 16 | 32)) => OutputDepth::U16,
(ExportFormat::Avif, _) => OutputDepth::U8,
}
@ -1015,15 +1017,19 @@ impl ExportOptions {
}
}
/// Whether these options write HDR files (for photos edited in HDR): JPEG (gain map) or
/// 32-bit float TIFF with [`ExportOptions::hdr`].
/// Whether these options write HDR files (for photos edited in HDR): JPEG (gain map), AVIF
/// (PQ) or 32-bit float TIFF with [`ExportOptions::hdr`].
pub fn hdr_output(&self) -> bool {
self.hdr && matches!((self.format, self.bit_depth), (ExportFormat::Jpeg, _) | (ExportFormat::Tiff, Some(32)))
self.hdr && matches!((self.format, self.bit_depth), (ExportFormat::Jpeg | ExportFormat::Avif, _) | (ExportFormat::Tiff, Some(32)))
}
/// The colour space the file is actually written in (AVIF: sRGB).
/// The colour space the file is actually written in (AVIF: sRGB, or Rec. 2020 for HDR).
pub fn effective_space(&self) -> OutputSpace {
if self.format == ExportFormat::Avif { OutputSpace::Srgb } else { self.color_space }
match self.format {
ExportFormat::Avif if self.hdr => OutputSpace::Rec2020,
ExportFormat::Avif => OutputSpace::Srgb,
_ => self.color_space,
}
}
/// Output file name for photo `p` at 1-based position `seq` in a batch (the original's
@ -1276,11 +1282,14 @@ pub fn encode_deep(img: &DeepImage, o: &ExportOptions, meta: Option<&Metadata>)
DeepSamples::U16(v) => EncodeImage::new(w, h, 3, Samples::U16(v)),
DeepSamples::F32(v) => EncodeImage::new(w, h, 3, Samples::F32(v)),
};
let r = match o.format {
ExportFormat::Png => encode::encode_png(&e, &meta),
ExportFormat::Tiff => encode::encode_tiff(&e, o.tiff_compression, &meta),
ExportFormat::Avif => encode::encode_avif(&e, o.quality, 8, &meta),
f => return Err(format!("{f:?} export is 8-bit only")),
let r = match (o.format, &img.samples) {
(ExportFormat::Png, _) => encode::encode_png(&e, &meta),
(ExportFormat::Tiff, _) => encode::encode_tiff(&e, o.tiff_compression, &meta),
(ExportFormat::Avif, DeepSamples::F32(v)) if img.space == OutputSpace::Rec2020 => {
lightcraft_codecs::encode_avif_pq(w, h, v, o.quality, 8, &meta)
}
(ExportFormat::Avif, _) => encode::encode_avif(&e, o.quality, 8, &meta),
(f, _) => return Err(format!("{f:?} export is 8-bit only")),
};
r.map_err(|e| e.to_string())
}
@ -1429,10 +1438,18 @@ fn prepare_guarded(
) -> Result<PreparedExport, String> {
let p = session.catalog.photo(id).ok_or("no such photo")?;
let file_name = o.file_name_for(p, seq);
// HDR output only for photos edited in HDR; the rest of the batch exports as usual
let sdr_opts;
let o = if o.hdr && !p.develop.hdr.enabled {
sdr_opts = ExportOptions { hdr: false, ..o.clone() };
&sdr_opts
} else {
o
};
let work = if o.format.is_rendered() {
let (w, h) = output_size(p, o);
let meta = export_metadata(p, o);
let gain_map = o.hdr_output() && o.format == ExportFormat::Jpeg && p.develop.hdr.enabled;
let gain_map = o.hdr_output() && o.format == ExportFormat::Jpeg;
let job = session.export_job(id, w, h, o.effective_space(), o.effective_depth())?;
let hdr_job = if gain_map { Some(session.export_job(id, w, h, o.effective_space(), OutputDepth::F32Hdr)?) } else { None };
Work::Render(Box::new(RenderWork { job, hdr_job, meta, opts: o.clone() }))

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@ -422,3 +422,21 @@ fn hdr_float_tiff_keeps_highlights_above_white() {
assert!(sdr <= 1.0 + 1e-3, "SDR float TIFF stays in 0..1 ({sdr})");
assert!(hdr > 1.2 && hdr <= 4.0 + 1e-3, "HDR float TIFF max {hdr}");
}
#[test]
fn hdr_avif_export_is_pq_rec2020() {
let mut s = Session::with_demo();
let id = sunset(&mut s);
let o = ExportOptions::from_json(&json!({"longEdge": 160, "format": "avif", "hdr": true, "quality": 70}));
assert!(o.hdr_output());
let sdr = export_photo(&mut s, id, &o, 1).unwrap();
s.execute("develop.hdr", &json!({"enabled": true, "maxEv": 2})).unwrap();
let hdr = export_photo(&mut s, id, &o, 1).unwrap();
// the `colr` nclx box: BT.2020 primaries (9), PQ (16), BT.2020 NCL (9), full range
let nclx = |b: &[u8]| b.windows(4).position(|w| w == b"nclx").map(|i| b[i + 4..i + 11].to_vec());
let c = nclx(&hdr.bytes).expect("colr nclx box");
assert_eq!(c, vec![0, 9, 0, 16, 0, 9, 0x80]);
assert!(hdr.bytes.windows(4).any(|w| w == b"clli"), "content light level box");
// a photo without an HDR edit exports as an ordinary (sRGB) AVIF
assert!(nclx(&sdr.bytes).is_none_or(|c| c[3] != 16));
}

View File

@ -532,14 +532,16 @@ pub fn show(app: &mut LightcraftApp, ctx: &egui::Context) {
choices(ui, "Bit depth", "exportBitDepth", depths, &mut bd);
opts.bit_depth = Some(bd);
}
if matches!(opts.format, F::Jpeg | F::Tiff) {
let tip = "Photos edited in HDR: JPEG with an HDR gain map (looks right everywhere, brighter highlights on HDR displays); TIFF needs 32-bit float";
if matches!(opts.format, F::Jpeg | F::Tiff | F::Avif) {
let tip = "Photos edited in HDR: JPEG with an HDR gain map (looks right everywhere, brighter highlights on HDR displays), AVIF as 10-bit Rec. 2020 PQ; TIFF needs 32-bit float";
ui.checkbox(&mut opts.hdr, "HDR output").on_hover_text(tip);
if opts.hdr && !opts.hdr_output() {
ui.label(egui::RichText::new("HDR TIFF needs 32-bit float.").color(t.text_dim));
}
}
if !rendered {
} else if opts.format == F::Avif && opts.hdr {
ui.label(egui::RichText::new("Color space: Rec. 2020 PQ (HDR AVIF)").color(t.text_dim));
} else if opts.format == F::Avif {
ui.label(egui::RichText::new(crate::i18n::tr("Color space: sRGB (AVIF)")).color(t.text_dim));
} else {

View File

@ -427,7 +427,7 @@ under the UI command that wraps it (a no-op error); the UI command now wins.
| LR-HDR-SDRPREVIEW | SDR preview of HDR | P2 | 🟡 | `ctl:hdr.sdr*` | SDR rendition sliders (brightness, contrast, highlights, shadows, whites, clarity) used by every SDR view and export; no separate SDR-preview toggle until HDR display lands |
| LR-HDR-VISUALIZE | Visualize HDR range | P2 | ✅ | `cmd:view.visualizeHdr`, `crates/pipeline/src/visualize.rs` (`hdr_range`) | grey below SDR white, four colour bands by stops above it |
| LR-HDR-LIMIT | HDR headroom limit | P2 | ✅ | `ctl:hdr.maxEv`, `cmd:develop.hdr` | 0 to 5 stops |
| LR-HDR-EXPORT | HDR export | P2 | 🟡 | `cmd:app.export`, `crates/codecs/src/gainmap.rs`, `crates/engine/src/export.rs` (`encode_gain_map_jpeg`) | `hdr` export option: ISO 21496-1 gain map JPEG (plus Adobe hdrgm and Apple XMP), 32-bit float TIFF; AVIF PQ/HLG not yet; no HEIC (no permissive HEVC encoder) |
| LR-HDR-EXPORT | HDR export | P2 | 🟡 | `cmd:app.export`, `crates/codecs/src/gainmap.rs`, `crates/engine/src/export.rs` (`encode_gain_map_jpeg`) | `hdr` export option: ISO 21496-1 gain map JPEG (plus Adobe hdrgm and Apple XMP), 10-bit Rec. 2020 PQ AVIF, 32-bit float TIFF; no HLG yet; no HEIC (no permissive HEVC encoder) |
## R. Video (VID)
@ -451,7 +451,7 @@ under the UI command that wraps it (a no-op error); the UI command now wins.
| LR-EXP-BITDEPTH | Bit depth | P1 | ✅ | `cmd:app.export` (`bitDepth`), `crates/pipeline/src/output.rs` (`OutputDepth`), `crates/engine/src/export.rs` | 16-bit PNG/TIFF rendered at 16 bits (TIFF defaults to 16), 32-bit float linear TIFF with a linear profile, 10-bit AVIF; high-bit-depth renders run on the CPU |
| LR-EXP-COMPRESSION | TIFF compression | P1 | ✅ | `cmd:app.export` (`tiffCompression`: none / lzw / zip) | |
| LR-EXP-COLORSPACE | Output colour space | P0 | ✅ | `cmd:app.export` (`colorSpace`), `crates/pipeline/src/output.rs`, `crates/engine/src/export.rs` | sRGB, Display P3, Adobe RGB (1998) compatible, ProPhoto RGB, Rec. 2020: rendered from the working space with gamut mapping into the target gamut (CPU + GPU), own ICC profile embedded; AVIF stays sRGB (muxer has no ICC) |
| LR-EXP-HDR | HDR output | P2 | 🟡 | `cmd:app.export`, `crates/ui-egui/src/panels/dialogs.rs` | HDR output checkbox in the export dialog: gain map JPEG, float TIFF; AVIF later |
| LR-EXP-HDR | HDR output | P2 | 🟡 | `cmd:app.export`, `crates/ui-egui/src/panels/dialogs.rs` | HDR output checkbox in the export dialog: gain map JPEG, PQ AVIF, float TIFF; no HDR presets yet |
| LR-EXP-SHARPEN | Output sharpening | P1 | ✅ | `cmd:app.export` (`sharpen`, `sharpenAmount`) | |
| LR-EXP-METADATA | Metadata policy | P1 | ✅ | `cmd:app.export` (`metadata`, `removeLocation`) | |
| LR-EXP-WATERMARK | Watermark | P1 | ✅ | `cmd:app.export` (`watermark`: text, or `{text, vertical, size, opacity, anchor, inset, color, shadow, image, imageWidth}`), `crates/engine/src/export.rs` (`Watermark`, `WATERMARK_PARAMS`) | text (`size` = height as a fraction of the short edge, 0.005..0.5, default 0.035; `color` sRGB `[r,g,b]`; `shadow`; Japanese vertical glyph forms and origins, tested by `biz_ud_vertical_watermarks_place_punctuation_at_the_top_right`; extended grapheme cells keep decomposed dakuten/handakuten and Latin accents together, tested by `vertical_watermarks_keep_combining_marks_in_one_cell` and `upright_watermark_cell_retains_multiple_glyphs` (see `docs/vertical-watermarks.md`)) or a graphic with transparency (`image` path, `imageWidth` = fraction of the photo's width, 0.01..1, converted to the output colour space); `anchor`, `inset` (fraction of the short edge, 0..0.4), `opacity` 0..1. Unknown keys and out-of-range values are errors (issue #183) |