55 lines
2.4 KiB
JavaScript
55 lines
2.4 KiB
JavaScript
// SonicForge TrackInstrument Service
|
|
// Bọc FluidSynth channel per-track: playNote/noteOff theo TrackInstrumentCtx
|
|
// (ch/program/synthEngine/sfId/bank/prog/dest) — dùng cho preview mọi nguồn
|
|
// (keybed, piano roll, draw, hardware MIDI, click) qua UnifiedMidiRouter.
|
|
// Tạo mới mỗi note-on (overwrite registry) — voice cũ giữ engine cũ trong
|
|
// tracker nên note-off luôn stop đúng channel.
|
|
window.TrackInstrument = window.TrackInstrument || {};
|
|
|
|
(function () {
|
|
function TrackInstrument(trackId, ctx) {
|
|
this.trackId = trackId;
|
|
this.ch = ctx ? (ctx.ch != null ? ctx.ch : 0) : 0;
|
|
this.program = ctx ? ctx.program : undefined;
|
|
this.synthEngine = ctx ? ctx.synthEngine : undefined;
|
|
this.sfId = ctx ? ctx.sfId : undefined;
|
|
this.bank = ctx ? (ctx.bank || 0) : 0;
|
|
this.prog = ctx ? (ctx.prog || 0) : 0;
|
|
this.dest = ctx ? (ctx.dest || null) : null;
|
|
}
|
|
|
|
// Đảm bảo channel đã select đúng instrument trước khi play (fire-and-forget:
|
|
// playNote tự load + retry nếu SF chưa load xong — dedup trong loadSoundFont).
|
|
TrackInstrument.prototype._ensure = function () {
|
|
try {
|
|
if (!window.SonicSF || !window.SonicSF.selectInstrument) return;
|
|
if (this.sfId) {
|
|
window.SonicSF.selectInstrument(this.ch, this.bank, this.prog, this.sfId);
|
|
} else if (this.program !== undefined) {
|
|
window.SonicSF.selectInstrument(this.ch, 0, this.program, null);
|
|
}
|
|
} catch (e) {
|
|
console.warn('[TrackInstrument] selectInstrument error:', e);
|
|
}
|
|
};
|
|
|
|
TrackInstrument.prototype.playNote = function (pitch, velocity, durationMs, startTime) {
|
|
try {
|
|
if (!window.SonicSF || !window.SonicSF.playNote) return;
|
|
this._ensure();
|
|
var dur = (durationMs != null ? durationMs : 500) || 500;
|
|
window.SonicSF.playNote(pitch, velocity != null ? velocity : 0.8, dur, startTime, this.program, this.dest, this.ch, this.synthEngine);
|
|
} catch (e) {
|
|
console.warn('[TrackInstrument] playNote error:', e);
|
|
}
|
|
};
|
|
|
|
TrackInstrument.prototype.noteOff = function (pitch) {
|
|
try {
|
|
if (window.SonicSF && window.SonicSF.stopNote) window.SonicSF.stopNote(this.ch, pitch);
|
|
} catch (e) {}
|
|
};
|
|
|
|
window.TrackInstrument = TrackInstrument;
|
|
})();
|