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fix(h264): restore the MMCO 6 long-term index range check

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This commit is contained in:
Dylan M. Taylor
2026-10-25 19:28:26 -04:00
parent 4134ace141
commit 8ebb43fe60
1 changed files with 11 additions and 4 deletions
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crates/h264/src/dpb.rs
+11 -4
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@@ -352,12 +352,19 @@ impl Dpb {
had5 = true;
}
6 => {
for e in &mut self.entries {
if e.mark == RefMark::Long && e.long_term_frame_idx == m.long_term_frame_idx {
e.mark = RefMark::Unused;
// Only an index within the allowed range may be assigned (8.2.5.4.6).
let allowed = match self.max_long_term_frame_idx {
Some(max) => m.long_term_frame_idx <= max,
None => false,
};
if allowed {
for e in &mut self.entries {
if e.mark == RefMark::Long && e.long_term_frame_idx == m.long_term_frame_idx {
e.mark = RefMark::Unused;
}
}
*cur_long = Some(m.long_term_frame_idx);
}
*cur_long = Some(m.long_term_frame_idx);
}
_ => {}
}