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Update pad parser to handle fractional pitch and trim length correctly

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This commit is contained in:
Victor Giers
2026-07-14 11:48:26 +02:00
parent ed6e50a50a
commit b74c13621d
2 changed files with 53 additions and 4 deletions
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13
src/lib/parsers.ts
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@@ -167,10 +167,15 @@ export function collectPads(files: TarFile[], sounds: Sound[]) {
const soundId = (file.data[2] << 8) + file.data[1];
const sound = sounds.find((s) => s.id === soundId);
const pitch = file.data[17] <= 12 ? file.data[17] : -(256 - file.data[17]); // pitch from -12 to +12
const pitchDecimal = file.data[26];
const pitchFraction = (file.data[26] ?? 0) / 100;
const pan = (file.data[18] >= 240 ? -(256 - file.data[18]) : file.data[18]) / 16; // normalized pan
const trimLeft = (file.data[6] << 16) + (file.data[5] << 8) + file.data[4];
const trimRight = trimLeft + (file.data[10] << 16) + (file.data[9] << 8) + file.data[8];
const trimLength = new DataView(
file.data.buffer,
file.data.byteOffset,
file.data.byteLength,
).getUint32(8, true);
const trimRight = trimLeft + trimLength;
result[group.id].push({
pad: i,
@@ -187,12 +192,12 @@ export function collectPads(files: TarFile[], sounds: Sound[]) {
trimRight,
playMode: file.data[23] === 0 ? 'oneshot' : file.data[23] === 1 ? 'key' : 'legato',
soundLength: sound ? calculateSoundLength(sound) : 0,
pitch: Math.max(-12, Math.min(12, parseFloat(`${pitch}.${pitchDecimal}`))),
pitch: Math.max(-12, Math.min(12, pitch + pitchFraction)),
rootNote: file.data[24],
timeStretch: timeStretch(file.data[21]),
timeStretchBpm: Number(bytesToFloat32(file.data.slice(12, 16)).toFixed(2)),
timeStretchBars: timeStretchBars(file.data[25]),
inChokeGroup: file.data[22] === 1,
inChokeGroup: file.data[22] !== 0,
midiChannel: file.data[3],
});
}