84 lines
4.0 KiB
JavaScript
84 lines
4.0 KiB
JavaScript
// SonicForge TrackInstrument Service
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// Bọc engine per-track: playNote/noteOff theo TrackInstrumentCtx
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// (ch/program/synthEngine/sfId/bank/prog/dest) — dùng cho preview mọi nguồn
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// (keybed, piano roll, draw, hardware MIDI, click) qua UnifiedMidiRouter.
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// T15: native-first — SF track đi thẳng vào engine native (NativeAudioService
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// + SF host bridge), SonicSF WASM chỉ là fallback khi native không sẵn sàng.
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// Tạo mới mỗi note-on (overwrite registry) — voice cũ giữ engine cũ trong
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// tracker nên note-off luôn stop đúng channel.
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window.TrackInstrument = window.TrackInstrument || {};
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(function () {
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function TrackInstrument(trackId, ctx) {
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this.trackId = trackId;
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this.ch = ctx ? (ctx.ch != null ? ctx.ch : 0) : 0;
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this.program = ctx ? ctx.program : undefined;
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this.synthEngine = ctx ? ctx.synthEngine : undefined;
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this.sfId = ctx ? ctx.sfId : undefined;
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this.bank = ctx ? (ctx.bank || 0) : 0;
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this.prog = ctx ? (ctx.prog || 0) : 0;
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this.dest = ctx ? (ctx.dest || null) : null;
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}
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// Native engine sẵn sàng cho track SF? (chỉ khi có sfId — đường native)
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TrackInstrument.prototype._nativeReady = function () {
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try { return !!(window.SonicNativeAudio && this.sfId); } catch (e) { return false; }
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};
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// Đảm bảo channel đã select đúng instrument trước khi play (fire-and-forget:
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// playNote tự load + retry nếu SF chưa load xong — dedup trong loadSoundFont).
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TrackInstrument.prototype._ensure = function () {
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try {
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if (!window.SonicSF || !window.SonicSF.selectInstrument) return;
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if (this.sfId) {
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window.SonicSF.selectInstrument(this.ch, this.bank, this.prog, this.sfId);
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} else if (this.program !== undefined) {
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window.SonicSF.selectInstrument(this.ch, 0, this.program, null);
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}
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} catch (e) {
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console.warn('[TrackInstrument] selectInstrument error:', e);
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}
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};
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// velocity: router đã normalize int 1-127 (unifiedMidiRouter.normalizeVelocity).
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TrackInstrument.prototype.playNote = function (pitch, velocity, durationMs, startTime) {
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var vel = velocity != null ? velocity : 100;
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if (this._nativeReady()) {
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try {
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var self = this;
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var dur = (durationMs != null ? durationMs : 500) || 500;
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// ensure native SF engine cho track (server dedup theo track_id)
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window.SonicNativeAudio.ensureSf(this.trackId, this.sfId, this.bank, this.prog)
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.catch(function () {});
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window.SonicNativeAudio.noteOn('sf', this.trackId, this.ch, pitch, vel);
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// ponytail: TrackInstrument không biết audioCtx → bỏ startTime
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// offset (delay = duration); thêm scheduling chính xác khi cần
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setTimeout(function () { self.noteOff(pitch); }, dur + 40);
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return;
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} catch (e) {
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console.warn('[TrackInstrument] native playNote error:', e);
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}
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}
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// Fallback SonicSF (WASM)
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try {
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if (!window.SonicSF || !window.SonicSF.playNote) return;
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this._ensure();
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var durF = (durationMs != null ? durationMs : 500) || 500;
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window.SonicSF.playNote(pitch, velocity != null ? velocity : 0.8, durF, startTime, this.program, this.dest, this.ch, this.synthEngine);
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} catch (e) {
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console.warn('[TrackInstrument] playNote error:', e);
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}
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};
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TrackInstrument.prototype.noteOff = function (pitch) {
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if (this._nativeReady()) {
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try { window.SonicNativeAudio.noteOff('sf', this.trackId, this.ch, pitch); return; } catch (e) {}
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}
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try {
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if (window.SonicSF && window.SonicSF.stopNote) window.SonicSF.stopNote(this.ch, pitch);
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} catch (e) {}
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};
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window.TrackInstrument = TrackInstrument;
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})();
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