fix: add missing API endpoints for volume POST, bypass/toggle, block params, block toggle; fix JACK 1.9.22 cmd args; fix Scarlett 2i2 channel count

test_pipeline_nam.py

@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+"""Test the C++ NAM engine integrated into the pipeline."""
+import sys, types, time
+import numpy as np
+
+# Mock tkinter to allow nam package import
+tk = types.ModuleType('tkinter')
+tk.Tk = type('MockTk', (), {'__init__': lambda s: None})
+sys.modules['tkinter'] = tk
+
+sys.path.insert(0, 'src')
+from dsp.pipeline import AudioPipeline
+from presets.types import Preset, FXBlock, FXType
+
+# Create pipeline
+p = AudioPipeline()
+print(f"NAM type: {type(p.nam).__name__}")
+
+# Load a NAM model
+ok = p.nam.load_model('models/nam/clean.nam')
+print(f"Model loaded: {ok}, is_loaded={p.nam.is_loaded}")
+if p.nam._engine:
+    print(f"  Static: {p.nam._engine.is_static}, SampleRate: {p.nam._engine._sample_rate}")
+
+# Test NAM engine directly
+block = np.sin(2 * np.pi * 440 * np.arange(256) / 48000).astype(np.float32) * 0.3
+processed = p.nam.process(block)
+print(f"NAM direct: in_rms={np.sqrt(np.mean(block**2)):.4f} out_rms={np.sqrt(np.mean(processed**2)):.4f}")
+
+# Test through pipeline
+preset = Preset(name='test', bank=0, program=0, chain=[
+    FXBlock(fx_type=FXType.NOISE_GATE, enabled=True, params={'threshold': 0.01}),
+    FXBlock(fx_type=FXType.NAM_AMP, enabled=True, params={'level': 0.8, 'gain': 0.5},
+            nam_model_path='models/nam/clean.nam'),
+])
+p.load_preset(preset)
+print(f"Preset loaded: {len(p._chain)} blocks")
+
+out = p.process(block)
+print(f"Pipeline out: in_rms={np.sqrt(np.mean(block**2)):.4f} out_rms={np.sqrt(np.mean(out**2)):.4f}")
+
+# Benchmark
+times = []
+for _ in range(500):
+    t0 = time.perf_counter()
+    p.process(block)
+    times.append((time.perf_counter() - t0) * 1000)
+print(f"Pipeline avg: {np.mean(times):.3f} ms, max: {np.max(times):.3f} ms, min: {np.min(times):.3f} ms")
+print(f"VU meter: input={p._input_level:.4f} output={p._output_level:.4f}")
+
+p.nam.unload()
+print("SUCCESS")