daniel
af34143107
Drives fixed-lane C_LANEPLAYS for managed lanes only (name-keyed, ordinal-renumber safe) in the view shell; diffs live track/item GUIDs on the panel timer to auto-tag new content to the active mode, first-poll-guarded. Pure guid_diff + lane_keys modules unit-tested; folds in Wave-1 polish.
45 lines
1.6 KiB
C++
45 lines
1.6 KiB
C++
// guid_diff implementation — pure set arithmetic for new-content detection. See
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// guid_diff.h. No REAPER, no SWELL — std only.
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#include "guid_diff.h"
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#include <algorithm>
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namespace reasampler {
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std::vector<std::string> newGuids(const std::set<std::string>& previous,
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const std::set<std::string>& current) {
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std::vector<std::string> added;
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// current \ previous. std::set iterates ascending, so set_difference yields a
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// deterministic order without a separate sort.
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for (const std::string& g : current) {
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if (g.empty()) continue; // never tag a GUID-read failure
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if (previous.count(g) == 0) added.push_back(g);
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}
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return added;
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}
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std::vector<std::string> GuidBaseline::observe(const std::set<std::string>& current) {
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if (!primed_) {
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// First poll after open/reset: establish the baseline, report nothing new so
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// pre-existing content is NOT auto-tagged (it defaults to Arrange).
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baseline_ = current;
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primed_ = true;
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return {};
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}
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std::vector<std::string> added = newGuids(baseline_, current);
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// Advance the baseline to the full current set. Using `current` (not baseline_ ∪
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// added) means a DELETED GUID drops out of the baseline too, so if REAPER later
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// reuses that GUID for genuinely new content it is detected again — the baseline
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// tracks the live set exactly, not a monotonic union.
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baseline_ = current;
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return added;
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}
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void GuidBaseline::reset() {
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baseline_.clear();
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primed_ = false; // next observe() re-baselines (first-poll guard re-armed)
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}
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} // namespace reasampler
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