2026-04-18 11:27:46 -03:00
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#!/usr/bin/env bash
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2026-04-23 01:13:29 -03:00
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# Manual: compare H.264 decoder output from a live eye device.
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# Not part of CI; requires a live /dev/lesavka_* eye device.
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2026-04-18 11:27:46 -03:00
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set -euo pipefail
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DEVICE="${1:-/dev/lesavka_r_eye}"
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OUTDIR="${2:-/tmp/lesavka-decoder-probe}"
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WAIT_SECONDS="${LESAVKA_DECODER_PROBE_WAIT_SECONDS:-3600}"
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BUFFERS="${LESAVKA_DECODER_PROBE_BUFFERS:-120}"
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POLL_SECONDS="${LESAVKA_DECODER_PROBE_POLL_SECONDS:-1}"
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mkdir -p "$OUTDIR"
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deadline=$((SECONDS + WAIT_SECONDS))
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while [[ ! -e "$DEVICE" ]]; do
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if (( SECONDS >= deadline )); then
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echo "decoder probe timed out waiting for $DEVICE" >&2
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exit 124
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fi
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sleep "$POLL_SECONDS"
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done
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timestamp="$(date -u +%Y%m%dT%H%M%SZ)"
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prefix="$OUTDIR/${timestamp}-$(basename "$DEVICE")"
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echo "capturing decoder comparison for $DEVICE into $prefix.*"
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gst-launch-1.0 -e \
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v4l2src device="$DEVICE" io-mode=mmap do-timestamp=true num-buffers="$BUFFERS" ! \
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queue max-size-buffers=8 max-size-time=0 max-size-bytes=0 leaky=downstream ! \
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h264parse disable-passthrough=true config-interval=-1 ! \
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video/x-h264,stream-format=byte-stream,alignment=au ! \
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tee name=t \
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t. ! queue ! filesink location="${prefix}-source.h264" \
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t. ! queue ! avdec_h264 ! videoconvert ! video/x-raw,format=RGBA,pixel-aspect-ratio=1/1 ! \
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pngenc snapshot=true ! filesink location="${prefix}-avdec.png" \
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t. ! queue ! openh264dec ! videoconvert ! video/x-raw,format=RGBA,pixel-aspect-ratio=1/1 ! \
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pngenc snapshot=true ! filesink location="${prefix}-openh264.png"
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echo "decoder comparison artifacts written under $OUTDIR"
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