62376dd4a1
This branch predates CI on `main`. `cargo fmt --all` only; no behaviour. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
51 lines
1.9 KiB
Rust
51 lines
1.9 KiB
Rust
//! Would keeping the predecessor (instead of falling back to `anchor`) recover
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//! the streams the running decoder actually decodes?
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//!
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//! `voice_region_start_why.rs` shows the failing branch: the start filter
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//! `end - s < 1_500_000` rejects `ADV`'s predecessor because its span is 3.6 MB,
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//! so `start` falls back to `anchor` — a TOC offset, not a stream boundary.
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//!
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//! This does NOT patch the resolver. It asks the one question that decides whether
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//! raising that cap is the fix: **from the predecessor, does `to_xma_riffs` return
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//! the decoder's own byte_sizes?** For `ADV` those are known, so this is a test and
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//! not a fit.
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//!
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//! cargo run -p sylpheed-formats --example voice_region_fix_test
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use sylpheed_formats::media::{DirectorySource, DiscSource};
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use sylpheed_formats::slb;
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const ADV_PRED: u64 = 433_425_776;
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const ADV_ANCHOR: u64 = 433_930_240;
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const ADV_END: u64 = 437_044_592;
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/// What the running decoder reported.
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const WANT: [usize; 3] = [1_294_336, 1_118_208, 1_171_456];
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fn main() {
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let disc = std::env::var("SYLPHEED_DISC").expect("SYLPHEED_DISC");
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let src = DirectorySource::new(std::path::PathBuf::from(&disc));
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for (label, start) in [
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("anchor (today)", ADV_ANCHOR),
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("predecessor (proposed)", ADV_PRED),
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] {
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let bytes = src
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.read_segment_range("dat/sound", start, (ADV_END - start) as usize)
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.expect("region");
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let sizes: Vec<usize> = slb::to_xma_riffs(&bytes)
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.iter()
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.map(|r| r.len() - 60)
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.collect();
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let hit = sizes.len() == 3 && sizes.iter().zip(WANT.iter()).all(|(a, b)| a == b);
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println!(
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"{label:24} start {start} span {:>9} -> {:?}{}",
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ADV_END - start,
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sizes,
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if hit {
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" <== MATCHES THE DECODER"
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} else {
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""
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}
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);
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}
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}
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