Lab050: model fresh-frame SDR video stream

experiments/lab046c_offline_recovery.py

@@ -639,10 +639,13 @@ def decode_candidate_from_memmap(
     sample_count: int,
     candidate: CoarseCandidate,
     detection_number: int,
+    *,
+    read_iq_window: Callable | None = None,
 ) -> CandidateOutcome:
     """Строго проверить один candidate локальными IQ-окнами."""
 
     started = time.perf_counter()
+    window_reader = lab046c._cs8_window if read_iq_window is None else read_iq_window
     reference = lab046c.lab044._preamble_reference_samples()
     probe_symbols = lab046c.lab045.PREAMBLE_BIT_COUNT + lab046c.lab045.PHY_HEADER_BIT_COUNT
     probe_waveform = (
@@ -655,7 +658,7 @@ def decode_candidate_from_memmap(
         sample_count,
         candidate.sample_offset + probe_waveform + REFINEMENT_MARGIN_SAMPLES,
     )
-    probe_iq = lab046c._cs8_window(raw, probe_start, probe_end)
+    probe_iq = window_reader(raw, probe_start, probe_end)
     maximum_window = int(probe_iq.size)
     local_coarse = candidate.sample_offset - probe_start
     try:
@@ -740,7 +743,7 @@ def decode_candidate_from_memmap(
             maximum_window=maximum_window,
             started=started,
         )
-    full_iq = lab046c._cs8_window(raw, refined_global, full_end)
+    full_iq = window_reader(raw, refined_global, full_end)
     maximum_window = max(maximum_window, int(full_iq.size))
     full = lab046b._extract_soft_window(full_iq, 0, frame_symbols)
     if not full.passed: