50 lines
1.7 KiB
Python
50 lines
1.7 KiB
Python
"""Find where decoded-vs-sidecar diverges for each channel."""
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from __future__ import annotations
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import sys
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from pathlib import Path
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REPO = Path(__file__).resolve().parents[1]
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sys.path.insert(0, str(REPO))
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from minimateplus.waveform_codec import decode_waveform_v2
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from analysis_idf.recon import TARGET, TXT, load_sidecar_samples
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def main():
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buf = TARGET.read_bytes()
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sc = load_sidecar_samples(TXT)
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decoded = decode_waveform_v2(buf[0x0f1f:])
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GEO_LSB = 0.0003
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for ch in ("Tran", "Vert", "Long"):
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sc_counts = [int(round(v / GEO_LSB)) for v in sc[ch]]
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dec = decoded[ch]
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# Find ALL transitions where mismatches start/stop
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first_diff = next((i for i in range(len(dec)) if dec[i] != sc_counts[i]), None)
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if first_diff is None:
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print(f"{ch}: NO MISMATCHES")
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continue
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print(f"{ch}: first diff at idx {first_diff}")
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# Show 5 before, 5 after
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for i in range(max(0, first_diff - 3), min(len(dec), first_diff + 8)):
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mark = " " if dec[i] == sc_counts[i] else "**"
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print(f" {mark} idx {i:4d}: sc={sc_counts[i]:6d} dec={dec[i]:6d} diff={dec[i]-sc_counts[i]:+d}")
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# Where does cumulative diff exceed 100?
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cum_match_run = 0
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max_match_run = 0
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match_run_start = 0
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diff_count = 0
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for i in range(len(dec)):
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if dec[i] == sc_counts[i]:
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cum_match_run += 1
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max_match_run = max(max_match_run, cum_match_run)
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else:
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cum_match_run = 0
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diff_count += 1
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print(f" total mismatches: {diff_count}/{len(dec)}, longest run of matches: {max_match_run}")
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print()
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if __name__ == "__main__":
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main()
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