Adding a tool to embed a URL into the BIOS bitmaps.

scripts/bitmaps/make_bmp_images.sh

+#!/bin/bash -e
+#
+# This adds text to our non-labeled recovery images. 
+#
+# The source images should be 1366x800, with the expectation they'll be cropped
+# to 1366x768 or 1280x800, have 2 lines of text overlayed at the bottom, and
+# then be resized to 800x600 so that the BIOS can then display them stretched
+# to the full screen size.
+#
+
+# Require one arg
+if [ $# -ne "1" ]; then
+  echo "Usage: $(basename $0) URL" 1>&2
+  exit 1
+fi
+url=$1
+
+
+# Image parameters
+geom_orig='1366x800'
+geom_crop_a='1366x768'
+geom_crop_b='1280x800'
+geom_final='800x600!'
+font="Helvetica-Narrow"
+pointsize=30
+
+
+# Temporary files
+tmpdir=$(mktemp -d /tmp/tmp.XXXXXXXXX)
+trap "rm -rf $tmpdir" EXIT
+img_orig="${tmpdir}/img_orig.bmp"
+img_crop_a="${tmpdir}/img_crop_a.bmp"
+img_crop_b="${tmpdir}/img_crop_b.bmp"
+img_txt_a="${tmpdir}/img_txt_a.bmp"
+img_txt_b="${tmpdir}/img_txt_b.bmp"
+label_file="${tmpdir}/label.txt"
+
+# Output directories
+outdir_a=$(dirname $0)/out_${geom_crop_a}
+[ -d "$outdir_a" ] || mkdir -p "$outdir_a"
+outdir_b=$(dirname $0)/out_${geom_crop_b}
+[ -d "$outdir_b" ] || mkdir -p "$outdir_b"
+
+
+function find_background_color {
+  src_img=$1
+  convert "$src_img" -crop '1x1+10+10!' txt:- | \
+    perl -n -e 'print "$1" if m/(#[0-9a-f]+)/i;'
+}
+
+function process_one_file {
+  src_img=$1
+
+  # Figure out the filenames to use
+  txt_file=${src_img%*.gif}.txt
+  root=$(basename "$src_img")
+  root=${root%*.*}
+  # one more layer of heirarchy to match BIOS source tree
+  dst_dir_a="${outdir_a}/${root}"
+  [ -d "$dst_dir_a" ] || mkdir -p "$dst_dir_a"
+  dst_dir_b="${outdir_b}/${root}"
+  [ -d "$dst_dir_b" ] || mkdir -p "$dst_dir_b"
+  dst_img_a="${dst_dir_a}/${root}.bmp"
+  dst_img_b="${dst_dir_b}/${root}.bmp"
+  echo "processing $root ..."
+
+  # First, make sure we start with the right-size original
+  bg=$(find_background_color "$src_img")
+  convert "$src_img" -background "$bg" \
+    -gravity center -extent $geom_orig "$img_orig"
+
+  # Now crop that to the two target sizes
+  convert "$img_orig" -gravity Center \
+    -crop "$geom_crop_a"+0+0 +repage "$img_crop_a"
+  convert "$img_orig" -gravity Center \
+    -crop "$geom_crop_b"+0+0 +repage "$img_crop_b"
+
+  # Add the labels in
+  if [ -r "$txt_file" ]; then
+    # Replace all '$URL' in the URL in the text file with the real url
+    perl -p \
+      -e 'BEGIN {$/ = ""; $url = shift; }' \
+      -e 'chomp; s/\$URL/$url/gse;' \
+      -e 'END {print "\n";}' "$url" "$txt_file" > "$label_file"
+    # Render it
+    convert "$img_crop_a" -fill white \
+      -font "$font" -pointsize "$pointsize" -interline-spacing 5 \
+      -gravity south -annotate '+0+10' '@'"$label_file" "$img_txt_a"
+    convert "$img_crop_b" -fill white \
+      -font "$font" -pointsize "$pointsize" -interline-spacing 5 \
+      -gravity south -annotate '+0+10' '@'"$label_file" "$img_txt_b"
+  else
+    mv "$img_crop_a" "$img_txt_a"
+    mv "$img_crop_b" "$img_txt_b"
+  fi
+
+  # Now scale the result to the final size
+  convert "$img_txt_a" -scale "$geom_final" -alpha off "$dst_img_a"
+  convert "$img_txt_b" -scale "$geom_final" -alpha off "$dst_img_b"
+}
+
+
+# Do it.

[Randall Spangler, 2010/08/16 15:45:56]

(process all files)

+for file in originals/*.gif; do
+  process_one_file "$file"
+done