Faster pixel grabbing

Docker/Dockerfile

@@ -41,6 +41,11 @@ RUN apk add jq
 RUN apk add sed
 RUN apk add nodejs
 COPY ./mozilla /root/.mozilla
+RUN echo https://dl-cdn.alpinelinux.org/alpine/edge/testing >> /etc/apk/repositories
+RUN apk update
+RUN apk add wmctrl
+RUN apk add git make gcc musl-dev libx11-dev
+RUN git clone https://github.com/muquit/grabc && cd grabc && make && make install
 COPY . /opt
 
 WORKDIR /opt

Docker/annotate_header.sh

@@ -36,10 +36,15 @@ annotate_header(){
   convert -size $(get_size "$filename") xc:none -fill white "$overlay_filename"
   convert -size $(get_size "$filename") xc:none -fill transparent "$hardoverlay_filename"
 
+  START=$(date +%s.%N)
   all_positions=$(python ./get-text-position.py "$cropped_filename" )
+  END=$(date +%s.%N)
+  DIFF=$(echo "$END - $START" | bc)
+  echo "{'ocr_took': '${DIFF}s'}"
   
   while [ $# -gt 0 ]
   do
+    START=$(date +%s.%N)
     header=$1
     description=$2
     matching_line=$(echo "$all_positions" | grep "$header" | head -n 1)
@@ -80,11 +85,18 @@ annotate_header(){
     wait $second_job;
     shift
     shift
+    END=$(date +%s.%N)
+    DIFF=$(echo "$END - $START" | bc)
+    echo "{'annotation_took': '${DIFF}s'}"
   done
+  START=$(date +%s.%N)
   convert "$filename" "$overlay_filename" -compose Darken -composite "${annotated_filename}.step.png"
   convert "${annotated_filename}.step.png" "$hardoverlay_filename" -compose src-over -composite "$annotated_filename"
   rm "$overlay_filename" "$annotated_filename.step.png" "$hardoverlay_filename" "$cropped_filename" "$filename"
   echo "{'new_file': \"${BASE_URL}/$(echo "$annotated_filename" | sed 's|/opt/||')\"}"
+  END=$(date +%s.%N)
+  DIFF=$(echo "$END - $START" | bc)
+  echo "{'composition_took': '${DIFF}s'}"
 }
 
 #annotate_header "set-cookie" "identyfikator internetowy z cookie" "Cookie" "identyfikator internetowy z cookie"

Docker/utils.sh

@@ -1,13 +1,36 @@
 #!/bin/bash
 
-get_pixel_color(){
+timestamp(){
+  echo $((${EPOCHREALTIME//.} / 1000))
+}
+
+_get_pixel_color(){
+  # old version that takes up to .5s to run
+  START=$(timestamp)
   x=$1;
   y=$2;
   output_path="/tmp/$(mktemp -u XXXXXX).png"
   scrot $output_path
   magick $output_path -format "%[hex:p{$x,$y}]" info:
+  END=$(timestamp)
+  DIFF=$(echo "$END - $START" | bc)
+  echo "{'getting_pixel_color_took': '${DIFF}ms'}" > /dev/stderr
 }
 
+
+get_pixel_color(){
+  x=$1;
+  y=$2;
+  FIREFOX_ID=$(wmctrl -lp | grep Firefox | awk '{print $1}')
+  if [ "$FIREFOX_ID" = "" ]
+  then
+    echo "NONE"
+    return
+  fi
+  grabc -w "$FIREFOX_ID" -l +${x}+${y}
+}
+
+
 extract_text(){
   output_path="/tmp/$(mktemp -u XXXXXX).png"
   cropped_path=$output_path--cropped.png
@@ -67,7 +90,12 @@ start_firefox(){
     #echo 'user_pref("layout.css.devPixelsPerPx", "1.5");' >> /root/.mozilla/firefox/bifup8k5.docker/prefs.js
     firefox --devtools > /dev/null &
     FIREFOX_PID=$!
-    sleep 3
+    while [ $(get_pixel_color 100 100) = "NONE" ]
+    do
+      echo "waiting for firefox to open the window"
+      sleep 0.1
+    done;
+    echo "firefox opened the window"
 }
 
 prepare_firefox(){
@@ -87,6 +115,18 @@ prepare_firefox(){
   # sleep 5 # it needs some time
 }
 
+
+wait_for_pixel_color(){
+  x=$1;
+  y=$2;
+  color=$3;
+  timeout=$4;
+  while [ $(get_pixel_color 143 122) = "#2e3436" ]
+  do
+    sleep 0.1
+  done
+}
+
 load_website(){
   URL=$1
   keycombo Control_L l
@@ -98,7 +138,7 @@ load_website(){
   sleep 1
   echo "{'current_action': 'waiting for $URL to load...'}"
   times=0
-  while [ $(get_pixel_color 143 122) = "2E3436" ] # the center of the X icon that becomes a "refresh" icon once the website is finished loading
+  while [ $(get_pixel_color 143 122) = "#2e3436" ] # the center of the X icon that becomes a "refresh" icon once the website is finished loading
   do
     sleep 0.5
     #printf "."
@@ -136,7 +176,7 @@ network_inspector_search(){
 }
 
 network_inspector_has_more_entries(){
-  [ $(get_pixel_color 1267 1572) = "F9F9FA" ]
+  [ $(get_pixel_color 1267 1572) = "#f9f9fa" ]
 }
 
 network_inspector_next_entry(){