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fix(fxrt): resume sau long stall phai fade-in (het click), khong hold khi da im lang

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Lộc Phạm
2026-08-24 12:25:13 +07:00
parent 86d5bbc372
commit 09d8a386fb
4 changed files with 16 additions and 10 deletions
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app/static/js/sf-fx-realtime.js
+11 -5
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@@ -38,6 +38,7 @@ class SfFxRealtimeProcessor extends AudioWorkletProcessor {
this.holdPos = 0;
this.holdLeft = 0;
this.holdFadeLeft = 0; // mẫu còn lại của fade-out sau HOLD
this.silenced = false; // đã fade về 0 → im lặng; resume phải fade-in, không hold lại
this.bufLen = this.BLOCK * this.BURST;
this.inL = new Float32Array(this.bufLen);
this.inR = new Float32Array(this.bufLen);
@@ -111,9 +112,11 @@ class SfFxRealtimeProcessor extends AudioWorkletProcessor {
}
// Underrun giữa stream — chuyển hold (không cắt zero ngay → hết click).
this.playing = false;
this.holdPos = 0;
this.holdLeft = this.HOLD * this.BLOCK;
this.holdFadeLeft = this.HOLD_FADE * this.BLOCK;
if (!this.silenced) { // đã im lặng (fade xong) → giữ im lặng, không hold lại block cũ
this.holdPos = 0;
this.holdLeft = this.HOLD * this.BLOCK;
this.holdFadeLeft = this.HOLD_FADE * this.BLOCK;
}
}
// Không phát: resume khi đủ block (lần đầu chờ FILL; sau đó chỉ cần 1
// block — hold che khoảng chờ).
@@ -123,11 +126,13 @@ class SfFxRealtimeProcessor extends AudioWorkletProcessor {
const wasFading = this.holdFadeLeft > 0 && this.holdLeft <= 0;
this.holdLeft = 0;
this.holdFadeLeft = 0;
if (wasFading && this.hasStarted) {
// Resume giữa fade-out: gain đang <1 → fade-in nhanh tránh jump ~0→1
if ((wasFading || this.silenced) && this.hasStarted) {
// Resume giữa fade-out / sau im lặng: gain đang <1 (hoặc 0) →
// fade-in nhanh tránh jump ~0→1 (click sau long stall).
this.outGain = 0;
this.fadeLeft = this.FADE;
}
this.silenced = false;
if (!this.hasStarted) {
this.hasStarted = true;
this.outGain = 0;
@@ -154,6 +159,7 @@ class SfFxRealtimeProcessor extends AudioWorkletProcessor {
this.holdPos++;
if (this.holdPos >= this.BLOCK) this.holdPos = 0;
this.holdFadeLeft--;
if (this.holdFadeLeft <= 0) this.silenced = true; // fade xong → im lặng thật
continue;
}
outL[i] = 0;