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M11: measure optimizer image resolution in physical page units

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This commit is contained in:
Kyle Kassen
2026-10-23 16:37:10 -05:00
parent a2ec27b477
commit bf86689fd7
7 changed files with 95 additions and 8 deletions
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crates/optimize/src/images.rs
+6 -3
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@@ -158,15 +158,18 @@ pub fn effective_resolutions(doc: &Document, pages: &[ObjRef]) -> HashMap<ObjRef
out: HashMap::new(),
};
for p in pages {
let Some(d) = doc.get(*p).as_dict().cloned() else { continue };
let Some(contents) = d.get(b"Contents") else { continue };
let Some(dict) = doc.get(*p).as_dict().cloned() else { continue };
let page = pdfcraft_model::Page { obj: *p, dict };
let Some(contents) = page.dict.get(b"Contents") else { continue };
let res = page_resources(doc, *p).unwrap_or_default();
walk.budget = DecodeBudget::page();
let Some(data) = content_bytes(doc, contents, &mut walk.budget) else {
walk.complete = false;
continue;
};
walk.content(&data, &res, Matrix([1.0, 0.0, 0.0, 1.0, 0.0, 0.0]));
// Content coordinates are in page units; image resolution is in physical inches.
let unit = page.user_unit(doc);
walk.content(&data, &res, Matrix([unit, 0.0, 0.0, unit, 0.0, 0.0]));
}
if !walk.complete {
walk.out.values_mut().for_each(|v| *v = f64::INFINITY);