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fix(scan): Use native JPEG stream for scan-book and img2pdf for 100% robust multi-page assembly

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Kryštof Pešek (Kof)
2026-10-30 02:07:41 +01:00
parent 5151734786
commit dc84a14bd2
4 changed files with 225 additions and 35 deletions
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scan-book
+7 -12
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@@ -49,35 +49,30 @@ while true; do
fi
fi
PAGE_FILE="$OUT_DIR/page_$(printf '%04d' $PAGE).pdf"
PAGE_FILE="$OUT_DIR/page_$(printf '%04d' $PAGE).jpg"
printf " [+] Skenuji stranu %03d (300 DPI True Gray)... " "$PAGE"
# Execute scan on bazina via USB
ssh bazina "scanimage -d 'brother4:bus1;dev8' --resolution 300 --mode 'True Gray' -x 210 -y 297 --format=pdf" > "$PAGE_FILE" 2>/dev/null || {
# Execute scan on bazina via USB (native JPEG output for zero-loss lossless packaging)
ssh bazina "scanimage -d 'brother4:bus1;dev8' --resolution 300 --mode 'True Gray' -x 210 -y 297 --format=jpeg" > "$PAGE_FILE" 2>/dev/null || {
# Fallback to network airscan if USB re-enumerated
scanimage -d "airscan:w0:Brother DCP-J4120DW" --resolution 300 --mode "Gray" -x 210 -y 297 --format=pdf > "$PAGE_FILE" 2>/dev/null
scanimage -d "airscan:w0:Brother DCP-J4120DW" --resolution 300 --mode "Gray" -x 210 -y 297 --format=jpeg > "$PAGE_FILE" 2>/dev/null
}
if [ -s "$PAGE_FILE" ]; then
echo "OK ($(du -h "$PAGE_FILE" | cut -f1))"
PAGE=$((PAGE + 1))
else
echo "CHYBA: Sken se nezdařil. Zkontrolujte připojení tiskárny a zkuste to znovu."
echo "CHYBA: Sken se nezdařil. Zkontrolujte tiskárnu a zkuste to znovu."
fi
echo ""
done
TOTAL_PAGES=$(ls -1 "$OUT_DIR"/page_*.pdf 2>/dev/null | wc -l)
TOTAL_PAGES=$(ls -1 "$OUT_DIR"/page_*.jpg 2>/dev/null | wc -l)
if [ "$TOTAL_PAGES" -gt 0 ]; then
echo ""
echo "[*] Spojuji $TOTAL_PAGES stran do výsledného PDF..."
if command -v pdfunite >/dev/null 2>&1; then
pdfunite "$OUT_DIR"/page_*.pdf "$FINAL_PDF"
else
convert "$OUT_DIR"/page_*.pdf "$FINAL_PDF"
fi
img2pdf "$OUT_DIR"/page_*.jpg -o "$FINAL_PDF"
ln -sf "$FINAL_PDF" "$HOME/Downloads/kniha.pdf"
echo "======================================================================"