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[perf](trx-backend-soapysdr): update fir overlap in place

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Signed-off-by: Stan Grams <sjg@haxx.space>
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Stan Grams
2026-03-01 01:13:10 +01:00
parent 7a6467320b
commit 198efa2092
1 changed files with 7 additions and 8 deletions
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src/trx-server/trx-backend/trx-backend-soapysdr/src/dsp.rs
+7 -8
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@@ -292,15 +292,14 @@ impl BlockFirFilter {
// Update overlap with the tail of the current input.
if n_overlap > 0 {
let keep_old = n_overlap.saturating_sub(n_new);
let mut new_overlap = Vec::with_capacity(n_overlap);
if keep_old > 0 {
let start = self.overlap.len() - keep_old;
new_overlap.extend_from_slice(&self.overlap[start..]);
if n_new >= n_overlap {
let new_start = n_new - n_overlap;
self.overlap.copy_from_slice(&input[new_start..]);
} else {
let keep_old = n_overlap - n_new;
self.overlap.copy_within(n_new..n_overlap, 0);
self.overlap[keep_old..].copy_from_slice(input);
}
let new_start = n_new.saturating_sub(n_overlap);
new_overlap.extend_from_slice(&input[new_start..]);
self.overlap = new_overlap;
}
}