From 073c5b8cd81453d0b7b7c56eb2ac26c34554a477 Mon Sep 17 00:00:00 2001
From: Sebastian Kiesel <sebastian.kiesel@tik.uni-stuttgart.de>
Date: Sun, 6 Aug 2023 12:59:56 +0200
Subject: [PATCH] muxsa-kvm2png: adjust for Debian Bookworm

---
 bin/muxsa-kvm2png | 28 +++++++++++++++++++++-------
 1 file changed, 21 insertions(+), 7 deletions(-)

diff --git a/bin/muxsa-kvm2png b/bin/muxsa-kvm2png
index 9916046..b2186a4 100755
--- a/bin/muxsa-kvm2png
+++ b/bin/muxsa-kvm2png
@@ -62,7 +62,7 @@ echo
 
 ############################################################################
 
-TMP_FILE="$(mktemp -t muxsa-kvm2png-XXXXXXXXXX.ppm)"
+TMP_FILE="$(mktemp -t muxsa-kvm2png-XXXXXXXXXX.png)"
 if [ ! -w "${TMP_FILE}" ] ; then
     echo "Error: cannot create tmp_file. abort."
     exit 1
@@ -193,12 +193,26 @@ while true ; do
         echo "Outfile ${OUTFILE} exists and overwriting not allowed. abort."
         exit 1
     fi
-    echo "Converting and saving screenshot to ${OUTFILE}"
-    pnmtopng -force "${TMP_FILE}" > "$OUTFILE"
-    if [ $? -ne 0 ] ; then
-        echo "Converting and saving screenshot failed. abort."
-        exit 1
-    fi
+
+    TMPFORMAT="$(identify -format "%m" "${TMP_FILE}")"
+    case "${TMPFORMAT}" in
+        PNG)
+            echo -n "copy "
+            cp -v "${TMP_FILE}" "${OUTFILE}"
+            ;;
+        PPM)
+            echo "pnmtopng -force \"${TMP_FILE}\" > \"${OUTFILE}\""
+            pnmtopng -force "${TMP_FILE}" > "${OUTFILE}"
+            if [ $? -ne 0 ] ; then
+                echo "Converting and saving screenshot failed. abort."
+                exit 1
+            fi
+            ;;
+        *)
+            echo "File ${TMP_FILE} has unknown format ${TMPFORMAT}. abort."
+            exit 1
+            ;;
+    esac
 
     if [ "${MUXSA_KVM2PNG_MD5_LAST_SLIDE}" ] ; then
         if md5sum "${OUTFILE}" | \