G3: 1 clock - PDC latency that + playhead engine-derived

native_bridge/debug/g3_probe_check.py

@@ -0,0 +1,62 @@
+"""G3 check — processed slot 0xFFFFFFFE tach rieng, khong lam sai latencies dict.
+
+Chay: python native_bridge/debug/g3_probe_check.py
+"""
+import ctypes
+import os
+import sys
+import time
+
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..", "..")))
+
+try:
+    _winmm = ctypes.windll.winmm
+    _winmm.timeBeginPeriod(1)
+except Exception:
+    pass
+
+import numpy as np  # noqa: E402
+
+from app.core.fx_realtime import FxRealtimeSession, FXRT_BLOCK  # noqa: E402
+
+# Chon JUCE bridge (processed slot chi co o JuceFxLoop.cpp).
+_REPO = os.path.abspath(os.path.join(os.path.dirname(__file__), "..", ".."))
+os.environ["SF_JUCE_FX_BRIDGE_PATH"] = os.path.join(
+    _REPO, "native_bridge", "build_juce", "Release", "juce_fx_bridge.exe")
+
+SR = 48000
+PURECOMP = r"C:\Program Files\Common Files\VST3\Sonible\purecomp.vst3"
+
+sess = FxRealtimeSession([{"type": "vst3", "path": PURECOMP, "bypass": False, "preset_b64": ""}], SR)
+try:
+    sess.wait_ready(30)
+    time.sleep(1.0)
+    lat0 = dict(sess.get_latencies())
+    proc0 = sess.get_processed()
+    print("lat0:", lat0)
+    print("proc0:", proc0)
+
+    t = np.arange(FXRT_BLOCK, dtype=np.float32) / SR
+    s = (np.sin(2 * np.pi * 440 * t) * 0.1).astype(np.float32)
+    inter = np.empty(FXRT_BLOCK * 2, dtype=np.float32)
+    inter[0::2] = s
+    inter[1::2] = s
+    blk = inter.tobytes()
+
+    n_ok = 0
+    last = proc0
+    for _ in range(400):  # ~2.1s
+        sess.write_input(blk)
+        sess.flush_input_stale(0.001)
+        sess.read_output()
+        time.sleep(0.002)
+    time.sleep(0.5)
+    lat1 = dict(sess.get_latencies())
+    proc1 = sess.get_processed()
+    print("lat1:", lat1)
+    print("proc1:", proc1)
+    assert lat0 == lat1, "latencies dict changed!"
+    assert isinstance(proc1, int) and proc1 >= (proc0 or 0), "processed not advancing"
+    print("OK: latencies dict unchanged, processed=%d->%d" % (proc0 or 0, proc1))
+finally:
+    sess.close()