C: realtime VST3 setParam live — Vst3Fx::setParam (title/shortTitle->ParamID, setParamNormalized + inputParameterChanges queue), RealtimeFxChain dispatch vst3, test_60 delay 1s->0.25s giua stream khong restart

2026-08-23 07:36:43 +07:00
parent 17e22bcf32
commit 35076f680b
2 changed files with 131 additions and 1 deletions
@@ -528,3 +528,52 @@ def test_59_limiter_brickwall_oversample(fx_bridge):
    pk_low = float(np.max(np.abs(out_low)))
    assert 0.05 <= pk_low <= 0.15, f"low-level peak {pk_low:.4f} lech unity"

+# ── 5.C Realtime VST3 setParam live (PLAN_MASTER_ENHANCE C) ───────────────
+def test_60_vst3_setparam_live(fx_bridge, adelay, monkeypatch):
+    """set_param runtime cho VST3: chain [vst3-delay, builtin limiter], đổi
+    param 'delay' giữa stream 1.0 → 0.25 → echo dịch ~1s → ~0.25s NGAY trên
+    session hiện tại (restart → plugin default 1s → echo vẫn ở 1s)."""
+    monkeypatch.setenv("SF_FX_BRIDGE_PATH", fx_bridge)
+    from app.core import fx_realtime
+
+    chain = [
+        {"type": "vst3", "path": adelay},
+        {"type": "builtin", "id": "limiter", "params": {"ceiling": -3.0}},
+    ]
+    sess = fx_realtime.start_session(chain, SR)
+    try:
+        out = bytearray()
+        nblk = 280  # 1.24s — đủ phủ vùng echo cũ (1s) để chứng minh không còn
+        for i in range(nblk):
+            blk = np.zeros((2, 256), dtype=np.float32)
+            if i == 103:  # impulse2 tại 0.6s (26368)
+                blk[0, 0] = 1.0
+                blk[1, 0] = 1.0
+            if i == 86:  # 0.5s — setParam VST3 'delay' 1.0 -> 0.25 (normalized)
+                sess.set_param(0, "delay", 0.25)
+            inter = np.empty(512, dtype=np.float32)
+            inter[0::2] = blk[0]
+            inter[1::2] = blk[1]
+            sess.write_input(inter.tobytes())
+            time.sleep(0.006)
+            for b in sess.read_output():
+                out += b
+        time.sleep(0.05)
+        for b in sess.read_output():
+            out += b
+    finally:
+        sess.close()
+    arr = np.frombuffer(bytes(out), dtype=np.float32)
+    assert arr.size > 0, "realtime loop không ra output"
+    got = arr.reshape(-1, 2).T
+
+    def _peak(lo, hi):
+        if lo >= got.shape[1]:
+            return 0.0
+        return float(np.max(np.abs(got[:, lo:hi])))
+
+    e2 = 103 * 256 + int(0.25 * SR)      # echo delay 0.25s ≈ 37393
+    assert _peak(e2 - 400, e2 + 400) > 0.5,         f"echo delay 0.25s không thấy tại {e2} (peak {_peak(e2-400, e2+400):.3f})"
+    e_old = 103 * 256 + SR               # echo delay cũ 1s ≈ 70468 (restart/no-apply)
+    assert _peak(e_old - 400, e_old + 400) < 0.3,         "param không áp live — echo vẫn ở delay 1s"
+    assert _peak(0, e2 - 700) < 0.3, "có tín hiệu lạ trước echo 0.25s"