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T2: realtime capture tail trimming

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Auto/Manual/Off tail handling for realtime track-tap capture. Auto scans
recorded PCM backward for last frame above -72 dB and truncates the wav
header-aware (8 s cap); Manual pads a fixed tail; Off is byte-identical.
wav_trim rejects WAVE_FORMAT_EXTENSIBLE with non-float SubFormat GUID.
This commit is contained in:
Daniel Harvey
2026-07-23 18:25:45 -04:00
parent 81fa37fe94
commit f2bfe466ec
12 changed files with 1053 additions and 10 deletions
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tests/test_render_settings.cpp
+28
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@@ -126,6 +126,31 @@ static void testTailManualClampsToCap() {
CHECK(tailRenderSettingsFor(TailMode::Manual, -50.0).tailMs == 0.0);
}
// --- realtimeRecordWindowEnd: the T2 record-window extension -----------------
static void testRealtimeWindowNoneIsExact() {
// None -> the exact range end, no extra recording (byte-identical to today).
CHECK(realtimeRecordWindowEnd(TailMode::None, 12.5, 2000.0) == 12.5);
// manualTailMs is ignored for None.
CHECK(realtimeRecordWindowEnd(TailMode::None, 12.5, 0.0) == 12.5);
}
static void testRealtimeWindowAutoAddsCap() {
// Auto -> range end + the 8 s runaway cap (trimmed later by the decay scan).
CHECK(realtimeRecordWindowEnd(TailMode::Auto, 10.0, 0.0) == 10.0 + kMaxTailSeconds);
// manualTailMs is ignored for Auto (the cap is fixed).
CHECK(realtimeRecordWindowEnd(TailMode::Auto, 10.0, 3000.0) == 10.0 + kMaxTailSeconds);
}
static void testRealtimeWindowManualAddsClampedLength() {
// Manual -> range end + the set length in seconds (fixed, no trim).
CHECK(realtimeRecordWindowEnd(TailMode::Manual, 5.0, 2000.0) == 5.0 + 2.0);
// Clamped to the 8 s cap: > 8000 ms -> +8 s.
CHECK(realtimeRecordWindowEnd(TailMode::Manual, 5.0, 9000.0) == 5.0 + kMaxTailSeconds);
// Negative floors to 0 -> no extra window (never records before the range end).
CHECK(realtimeRecordWindowEnd(TailMode::Manual, 5.0, -100.0) == 5.0);
}
// --- parseRazorEdits: P_RAZOREDITS string -> ranges --------------------------
static void testParseSingleTrackAudioArea() {
@@ -267,6 +292,9 @@ int main() {
testAutoTrimRatioDerivesFromDb();
testTailManualFixedNoTrim();
testTailManualClampsToCap();
testRealtimeWindowNoneIsExact();
testRealtimeWindowAutoAddsCap();
testRealtimeWindowManualAddsClampedLength();
testParseSingleTrackAudioArea();
testParseMultipleAreas();
testParseSkipsEnvelopeLaneAreas();