master strip: L/R volume + LINK + MUTE that, bo soloBtn

2026-08-22 21:41:54 +07:00
parent 4ae2f06c57
commit 2a5e2af04a
5 changed files with 290 additions and 74 deletions
@@ -303,6 +303,58 @@ def test_55_fader_after_master_chain(monkeypatch, tmp_path, fx_bridge):
    assert 0.4 < p6 / p0 < 0.6, f"fader -6dB phải ~1/2 đỉnh: {p6:.4f}/{p0:.4f}"
    assert 0.8 < p6 / base < 1.2, f"fader-6 phải ≈ base: {p6:.4f} vs {base:.4f}"

+# ── 5.8 Master L/R volume + LINK + MUTE ─────────────────────────────────
+def test_58_master_lr_link_mute(monkeypatch, tmp_path, fx_bridge):
+    """Master strip L/R: volumeL_db/volumeR_db tách kênh, link_lr → R theo L,
+    muted → zero output. Fallback volume_db (project cũ) vẫn chạy."""
+    monkeypatch.setenv("SF_FX_BRIDGE_PATH", fx_bridge)
+    if not os.path.isfile(DAW_BRIDGE):
+        pytest.skip("daw_vst_bridge.exe chưa build")
+    monkeypatch.setenv("SF_BRIDGE_PATH", DAW_BRIDGE)
+    from app.api.v1 import plugins as pl
+    monkeypatch.setattr(pl.settings, "RENDER_ENGINE", "bridge")
+    from app.core.render_engine import PythonRenderEngine
+    engine = PythonRenderEngine()
+
+    def project(master):
+        track = _midi_track()
+        track["volume_db"] = -20.0  # tránh normalize (>1.0)
+        return {
+            "metadata": {"bpm": 120.0, "time_signature_numerator": 4},
+            "main_session": {
+                "length_bars": 1.0,
+                "tracks": [track],
+                "master": dict({"fx_chain": [], "bypass": False}, **master),
+            },
+            "section_store": {},
+        }
+
+    def render(name, master):
+        out = str(tmp_path / name)
+        engine.render_project(project(master), out)
+        data, _ = _read_wav(out)
+        return data
+
+    base = render("base.wav", {"volumeL_db": 0.0, "volumeR_db": 0.0, "link_lr": True})
+    baseL = float(np.max(np.abs(base[0])))
+    baseR = float(np.max(np.abs(base[1])))
+    assert baseL > 0
+
+    lr = render("lr.wav", {"volumeL_db": -6.0, "volumeR_db": 0.0, "link_lr": False})
+    assert 0.4 < float(np.max(np.abs(lr[0]))) / baseL < 0.6,         f"L -6dB phải ~1/2 đỉnh: {float(np.max(np.abs(lr[0]))):.4f}/{baseL:.4f}"
+    assert abs(float(np.max(np.abs(lr[1]))) - baseR) / baseR < 0.15,         "R phải giữ nguyên khi link_lr=false"
+
+    link = render("link.wav", {"volumeL_db": -6.0, "volumeR_db": -3.0, "link_lr": True})
+    ratio = float(np.max(np.abs(link[1]))) / float(np.max(np.abs(link[0])))
+    assert 0.9 < ratio < 1.1, f"link_lr: R phải theo L ({ratio:.3f})"
+
+    muted = render("muted.wav", {"volumeL_db": 0.0, "volumeR_db": 0.0,
+                                 "link_lr": True, "muted": True})
+    assert float(np.max(np.abs(muted))) < 1e-6, "MUTE master phải zero output"
+
+    legacy = render("legacy.wav", {"volume_db": -6.0})
+    assert 0.4 < float(np.max(np.abs(legacy[0]))) / baseL < 0.6 and            0.4 < float(np.max(np.abs(legacy[1]))) / baseR < 0.6,         "fallback volume_db (project cũ) phải áp cả 2 kênh"
+

 # ── 5.6 PDC ───────────────────────────────────────────────────────────────
 def test_56_pdc_aligns_tracks(monkeypatch, tmp_path, fx_bridge):