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+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
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+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/qemu.py b/qemu.py
new file mode 100644
index 0000000..ec5f60a
--- /dev/null
+++ b/qemu.py
@@ -0,0 +1,726 @@
+#   This file is part of qemu.py
+#
+#   Copyright (C) 2025 pa4wdh
+#
+#   cputemp2maxfreq is free software; you can redistribute it and/or modify
+#   it under the terms of the GNU General Public License as published by
+#   the Free Software Foundation; either version 3 of the License , or
+#   (at your option) any later version.
+#
+#   cputemp2maxfreq is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#   GNU General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with cputemp2maxfreq; see the file COPYING.  If not, see
+#   <http://www.gnu.org/licenses>.
+
+import subprocess
+from time import sleep
+from tempfile import mkstemp
+from PIL import Image
+from PIL import ImageChops
+from PIL import ImageDraw
+from PIL import ImageColor
+import os
+from base64 import b64encode
+import gzip
+import bz2
+import lzma
+from datetime import datetime
+from io import BytesIO
+from yattag import Doc
+from yattag import indent
+import time
+
+class null_log:
+    def __init__(self):
+        pass
+
+    def write(self):
+        pass
+
+    def line(self,klass,text):
+        pass
+
+    def event(self,text):
+        pass
+
+    def critical(self,text):
+        pass
+
+    def warning(self,text):
+        pass
+
+    def info(self,text):
+        pass
+
+    def image(self,image):
+        pass
+
+    def tabs(self,tabdata):
+        # We should no nothing, but clients expect us to close images ...
+        for tab in tabdata:
+            if "image" in tab:
+                tab["image"].close()
+
+class html_log:
+    def __init__(self,filename,write_on_update=True):
+        self.filename=filename
+        self.write_on_update=write_on_update
+        self.data=[]
+        self.tabgroup=0
+
+    def write(self):
+        htmldoc,htmltag,htmltext=Doc().tagtext()
+        htmldoc.asis('<!DOCTYPE html>')
+        with htmltag("html"):
+            with htmltag("head"):
+                with htmltag("script"):
+                    htmldoc.asis("""
+function openTab(evt) {
+  // Declare all variables
+  var i, group, groupElements;
+
+  // Find the group name from the class of the button that triggered
+  group = evt.originalTarget.className.replace(" tablinks", "").replace(" active", "")
+
+  // The active tab is the same as the id of the button that triggered
+  activeTab = evt.originalTarget.id
+
+  // Get all elements with our group
+  groupElements = document.getElementsByClassName(group);
+  for (i = 0; i < groupElements.length; i++) {
+    // Mark elements with id matching the active tab as active, otherwise
+    // remove the active class
+    if (groupElements[i].id == activeTab) {
+      groupElements[i].className += " active";
+    } else {
+      groupElements[i].className = groupElements[i].className.replace(" active", "");
+    }
+  }
+
+} 
+""")
+
+                with htmltag("style"):
+                    htmldoc.asis("""
+p.event {
+  color: #007f00;
+}
+
+p.info {
+  color: #000000;
+} 
+  
+p.warning {
+  color: #ff7f00;
+} 
+
+p.critical {
+  color: #ff0000;
+}
+
+ /* Style the tab */
+.tab {
+  overflow: hidden;
+  border: 1px solid #ccc;
+  background-color: #f1f1f1;
+}
+
+/* Style the buttons that are used to open the tab content */
+.tab button {
+  background-color: inherit;
+  float: left;
+  border: none;
+  outline: none;
+  cursor: pointer;
+  padding: 14px 16px;
+  transition: 0.3s;
+}
+
+/* Change background color of buttons on hover */
+.tab button:hover {
+  background-color: #ddd;
+}
+
+/* Create an active/current tablink class */
+.tab button.active {
+  background-color: #ccc;
+}
+
+/* Style the tab content */
+.tabcontent {
+  display: none;
+  padding: 6px 12px;
+  border: 1px solid #ccc;
+  border-top: none;
+}
+
+div.active {
+  display: block;
+}
+""")
+
+            with htmltag("body"):
+                for data in self.data:
+                    htmldoc.asis(data)
+                
+        with open(self.filename,"w") as f:
+            f.write(indent(htmldoc.getvalue()))
+
+    def unixtime2str(self,timestamp):
+        localtz=datetime.now().astimezone().tzinfo
+        return datetime.fromtimestamp(timestamp,localtz).strftime('%Y-%m-%d %H:%M:%S %Z')
+
+    def line(self,klass,text):
+        timestamp=self.unixtime2str(time.time())
+        htmldoc,htmltag,htmltext=Doc().tagtext()
+        with htmltag("p", klass=klass):
+            htmltext(f"{timestamp}: {text}")
+        self.data.append(htmldoc.getvalue())
+        if self.write_on_update:
+            self.write()
+
+    def event(self,text):
+        self.line("event",text)
+
+    def critical(self,text):
+        self.line("critical",text)
+
+    def warning(self,text):
+        self.line("warning",text)
+
+    def info(self,text):
+        self.line("info",text)
+
+    def image2src(self,image):
+        bytesfh=BytesIO()
+        image.save(bytesfh,"png")
+        b64image=b64encode(bytesfh.getvalue())
+        return "data:image/png;base64, "+b64image.decode("UTF-8")
+        
+    def image(self,image):
+        inline_image=self.image2src(image)
+        htmldoc,htmltag,htmltext=Doc().tagtext()
+        with htmltag("div"):
+            htmldoc.stag("img",src=inline_image)
+        self.data.append(htmldoc.getvalue())
+        if self.write_on_update:
+            self.write()
+
+    def tabs(self,tabdata):
+        self.tabgroup=self.tabgroup+1
+        htmldoc,htmltag,htmltext=Doc().tagtext()
+
+        with htmltag("div",klass="tab"):
+            for tab in range(len(tabdata)):
+                klass=f"group{self.tabgroup} tablinks"
+                if tab==0:
+                    klass=klass+" active"
+                if "name" not in tabdata[tab]:
+                    tabdata[tab]["name"]=str(tab)
+                with htmltag("button",id=tab,klass=klass,onclick="openTab(event)"):
+                    htmltext(tabdata[tab]["name"])
+
+        for tab in range(len(tabdata)):
+            klass=f"group{self.tabgroup} tabcontent"
+            if tab==0:
+                klass=klass+" active"
+            with htmltag("div",id=tab,klass=klass):
+                with htmltag("h3"):
+                    htmltext(tabdata[tab]["name"])
+                if "timestamp" in tabdata[tab]:
+                    with htmltag("p"):
+                        htmltext(self.unixtime2str(tabdata[tab]["timestamp"]))
+                if "image" in tabdata[tab]:
+                    inline_image=self.image2src(tabdata[tab]["image"])
+                    tabdata[tab]["image"].close()
+                    htmldoc.stag('img', src=inline_image)
+
+        self.data.append(htmldoc.getvalue())
+        if self.write_on_update:
+            self.write()
+        
+
+class vm:
+    def __init__(self,vmtype,config,image=None):
+        self.log=null_log()
+        self.vmtype=vmtype
+        self.config=config
+        self.image=image
+        self.saved_mouse_x=None
+        self.saved_mouse_y=None
+        self.charToSendkey={
+            "`": "grave_accent",
+            "~": "shift-grave_accent",
+            "!": "shift-1",
+            "@": "shift-2",
+            "#": "shift-3",
+            "$": "shift-4",
+            "%": "shift-5",
+            "^": "shift-6",
+            "&": "shift-7",
+            "*": "shift-8",
+            "(": "shift-9",
+            ")": "shift-0",
+            "-": "minus",
+            "_": "shift-minus",
+            "=": "equal",
+            "+": "shift-equal",
+            "[": "bracket_left",
+            "{": "shift-bracket_left",
+            "]": "bracket_right",
+            "}": "shift-bracket_right",
+            "\\": "backslash",
+            "|": "shift-backslash",
+            ";": "semicolon",
+            ":": "shift-semicolon",
+            "'": "apostrophe",
+            '"': "shift-apostrophe",
+            ",": "comma",
+            "<": "shift-comma",
+            ".": "dot",
+            ">": "shift-dot",
+            "/": "slash",
+            "?": "shift-slash",
+            " ": "spc",
+        }
+        self.default_delay={
+            "sendkey": 0,
+            "qemu_startup": 0.1,
+            "mouse_move": 1,
+            "mouse_click": 0.1,
+            "screenshot": 0.5,
+        }
+        self.delay=self.default_delay.copy()
+
+    def set_delay(self,item,delay=None):
+        if item in self.delay:
+            if delay==None:
+                self.delay[item]=self.default_delay[item]
+                self.log.info(f"Delay for {item} is reset to default ({self.default_delay[item]})")
+            else:
+                self.delay[item]=delay
+                self.log.info(f"Delay for {item} is set to {delay}")
+        else:
+           raise KeyError
+
+    def get_delay(self,item):
+        if item in self.delay:
+            return self.delay[item]
+        else:
+            raise KeyError
+
+    def start_log(self,filename,write_on_update=True):
+        self.log=html_log(filename,write_on_update)
+        self.log.event("Log started")
+
+    def stop_log(self):
+        self.log.event("Log stopped")
+        self.log.write()
+        self.log=null_log()
+
+    def start(self):
+        cmdline=[]
+        cmdline.append(f"/usr/bin/qemu-system-{self.vmtype}")
+        cmdline.append("-monitor")
+        cmdline.append("stdio")
+        cmdline.append("-usb")
+        cmdline.append("-device")
+        cmdline.append("usb-mouse")
+        for item in self.config:
+            if self.config[item]==None:
+                cmdline.append(f"-{item}")
+                continue
+            if isinstance(self.config[item],list):
+                for subitem in self.config[item]:
+                    cmdline.append(f"-{item}")
+                    cmdline.append(f"{subitem}")
+                continue
+            cmdline.append(f"-{item}")
+            cmdline.append(f"{self.config[item]}")
+        if self.image!=None:
+            cmdline.append(self.image)
+        print(cmdline)
+        self.log.event(f"Starting VM with commandline: {cmdline}")
+        self.proc=subprocess.Popen(cmdline,stdin=subprocess.PIPE,stdout=subprocess.PIPE,stderr=subprocess.PIPE)
+        sleep(self.delay["qemu_startup"])
+        response=b""
+        try:
+            while response!="(qemu) \r\n":
+                response=self.send("\n")
+                print(response)
+            self.send("")
+        except Exception as e:
+            self.log.critical("Failed to start qemu:")
+            print("Failed to start qemu:")
+            for line in list(self.proc.stderr):
+                decodeline=line.decode("UTF-8")
+                print(decodeline, end='')
+                self.log.info(decodeline)
+            raise e
+
+    
+    def stop(self):
+        self.proc.terminate()
+        self.log.event("VM stopped")
+
+    def send(self,data):
+        #print(f"Sending: {data}")
+        try:
+            self.proc.stdin.write(data.encode("UTF-8"))
+            self.proc.stdin.flush()
+            response=self.proc.stdout.readline().decode("UTF-8")
+            #print(f"Response: {response}")
+        except Exception as e:
+            print("Connection with VM lost")
+            self.log.critical("Connection with VM lost")
+            raise e
+        return response
+
+    def sendkey(self,key,log=True):
+        if log:
+            self.log.event(f"Sending keystroke: {key}")
+        response=self.send("sendkey "+key+"\n")
+        keylist=key.split("-")
+        delay=len(keylist)*2*0.01
+        if delay<self.delay["sendkey"]:
+            delay=self.delay["sendkey"]
+        sleep(delay)
+
+    def type(self,data,progress=False):
+        if len(data)>200:
+            progress=True
+        if progress:
+            complete=int(len(data))
+            prefperc=-1
+            lastupdate=-1
+            #if len(data)>1000:
+            timestep=10
+            #    percstep=0
+            #else:
+            #    timestep=0
+            percstep=10
+            starttime=datetime.now().timestamp()
+            print(f"Typing {len(data)} bytes")
+        self.log.event(f"Typing: {data}")
+        for char in range(len(data)):
+            if progress:
+                perc=int((char*100)/complete)
+                now=datetime.now().timestamp()
+                if perc>prefperc+percstep or now>lastupdate+timestep:
+                    timediff=now-starttime
+                    speed=char/timediff
+                    if speed>0:
+                        togo=int((complete-char)/speed)
+                        speed=int(speed)
+                        print(f"Progress: {perc}% ({char} bytes, {speed} bytes/sec, {togo} seconds left)")
+                        self.log.info(f"Progress: {perc}% ({char} bytes, {speed} bytes/sec, {togo} seconds left)")
+
+                        prefperc=perc
+                        lastupdate=now
+            charToSend=data[char]
+            if charToSend=='\n' or charToSend=="\r":
+                self.sendkey("ret",False)
+            elif charToSend=='\t':
+                self.sendkey("tab",False)
+            else:
+                if charToSend in self.charToSendkey:
+                    self.sendkey(self.charToSendkey[charToSend],log=False)
+                else:
+                    if charToSend.isupper():
+                        self.sendkey("shift-"+charToSend.lower(),log=False)
+                    else:
+                        self.sendkey(charToSend,log=False)
+
+    def make_b64(self,data):
+        b64data=b64encode(data).decode("UTF-8")
+        b64string=""
+        for part in range(0,len(b64data),75):
+            b64string=b64string+b64data[part:part+75]+"\n"
+        return b64string
+
+    def transfer_linux_ascii(self,data,vmfile):
+        self.type(f"cat > {vmfile}\n")
+        self.type(data.decode("UTF-8"))
+        if data[-1]!=10:
+            self.sendkey("ret",log=False)
+        self.sendkey("ctrl-d",log=False)
+
+    def transfer_linux_binary(self,data,vmfile):
+        b64=self.make_b64(data)
+        self.type(f"base64 -di > {vmfile}\n")
+        self.type(b64)
+        self.sendkey("ret",log=False)
+        self.sendkey("ctrl-d",log=False)
+
+    def transfer_linux(self,filename,vmfile=None):
+        if vmfile==None:
+            vmfile=filename
+        self.log.event(f"Transferring file {filename} to VM {vmfile}")
+        try:
+            stat=os.stat(filename)
+        except:
+            self.log.critical(f"File {filename} not found")
+            return
+        if stat.st_size>50000:
+            print("File too large")
+            self.log.critical("File too large")
+            return
+        file=open(filename,"rb")
+        data=file.read()
+        file.close()
+        binary=False
+        for char in range(len(data)):
+            value=data[char]
+            if value>127:
+                binary=True
+                break
+            charToCheck=data[char:char+1]
+            if not charToCheck.isalnum() and charToCheck.decode("UTF-8") not in self.charToSendkey and charToCheck!=b"\n" and charToCheck!=b"\t":
+                binary=True
+                break
+        if binary:
+            print("Using binary transfer mode")
+            self.log.info("Using binary transfer mode")
+            self.transfer_linux_binary(data,vmfile)
+        else:
+            print("Using ascii transfer mode")
+            self.log.info("Using ascii transfer mode")
+            self.transfer_linux_ascii(data,vmfile)
+
+    def transfer_linux_compressed(self,filename,vmfile=None,algo="auto"):
+        if vmfile==None:
+            vmfile=filename
+        self.log.event(f"Transferring file {filename} to VM {vmfile} with compression")
+        print(f"Transferring file {filename} to VM {vmfile} with compression")
+        try:
+            file=open(filename,"rb")
+        except:
+            self.log.critical(f"File {filename} not found")
+            print(f"File {filename} not found")
+            return
+        data=file.read()
+        file.close()
+        if algo=="gzip" or algo=="gz":
+            compresseddata=gzip.compress(data)
+            decompresscommand="gzip -d"
+        elif algo=="bz" or algo=="bz2" or algo=="bzip2":
+            compresseddata=bz2.compress(data)
+            decompresscommand="bzip2 -d"
+        elif algo=="lzma" or algo=="xz":
+            compresseddata=lzma.compress(data,lzma.FORMAT_ALONE,lzma.CHECK_NONE,9)
+            decompresscommand="lzma -d"
+        elif algo=="auto":
+            compressor="gzip"
+            compresseddata=gzip.compress(data)
+            decompresscommand="gzip -d"
+            print(f"gzip result: {len(compresseddata)} bytes")
+            testdata=bz2.compress(data)
+            print(f"bzip2 result: {len(testdata)} bytes")
+            if len(testdata)<len(compresseddata):
+                compressor="bzip2"
+                compresseddata=testdata
+                decompresscommand="bzip2 -d"
+            testdata=lzma.compress(data,lzma.FORMAT_ALONE,lzma.CHECK_NONE,9)
+            print(f"lzma result: {len(testdata)} bytes")
+            if len(testdata)<len(compresseddata):
+                compressor="lzma"
+                compresseddata=testdata
+                decompresscommand="lzma -d"
+            print(f"Using {compressor}")
+            self.log.info(f"Selected compressor {compressor}")
+        else:
+            print(f"Unknown algorithm {algo}, falling back to gzip")
+            self.log.warning(f"Unknown algorithm {algo}, falling back to gzip")
+            compresseddata=gzip.compress(data)
+            decompresscommand="gzip -d"
+
+        print(f"Compressed: {len(compresseddata)} decompress: {decompresscommand}")
+        self.log.info(f"Compressed size: {len(compresseddata)} decompress: {decompresscommand}")
+        b64=self.make_b64(compresseddata)
+        if len(b64)>50000:
+            print("File too large")
+            self.log.critical("File too large")
+            return
+        self.type(f"base64 -di | {decompresscommand} > {vmfile}\n")
+        self.type(b64)
+        self.sendkey("ret",log=False)
+        self.sendkey("ctrl-d",log=False)
+
+    def mouse_rel(self,x,y):
+        self.send(f"mouse_move {x} {y}\n")
+        sleep(self.delay["mouse_move"])
+        if self.saved_mouse_x!=None:
+            self.saved_mouse_x=self.saved_mouse_x+x
+            self.saved_mouse_y=self.saved_mouse_y+y
+
+    def mouse_abs(self,x,y,reset=False):
+        self.log.event(f"Moving mouse to absolute position {x} {y}")
+        if self.saved_mouse_x==None or reset:
+            self.log.info(f"Current mouse position unknown, performing reset")
+            self.send("mouse_move -10000 0\n")
+            sleep(self.delay["mouse_move"])
+            self.send(f"mouse_move {x} 0\n")
+            sleep(self.delay["mouse_move"])
+            self.send("mouse_move 0 -10000\n")
+            sleep(self.delay["mouse_move"])
+            self.send(f"mouse_move 0 {y}\n")
+            sleep(self.delay["mouse_move"])
+            self.saved_mouse_x=x;
+            self.saved_mouse_y=y;
+        else:
+            self.mouse_rel(x-self.saved_mouse_x,y-self.saved_mouse_y)
+            self.saved_mouse_x=x
+            self.saved_mouse_y=y
+
+    def click(self,x,y,button=1):
+        self.log.event(f"Clicking mouse button {button} at {x} {y}")
+        self.mouse_abs(x,y)
+        self.send(f"mouse_button {button}\n")
+        sleep(self.delay["mouse_click"])
+        self.send(f"mouse_button 0\n")
+        sleep(self.delay["mouse_click"])
+
+    def doubleclick(self,x,y,button=1):
+        self.log.event(f"Double clicking mouse button {button} at {x} {y}")
+        self.mouse_abs(x,y)
+        self.send(f"mouse_button {button}\n")
+        sleep(self.delay["mouse_click"])
+        self.send(f"mouse_button 0\n")
+        sleep(self.delay["mouse_click"])
+        self.send(f"mouse_button {button}\n")
+        sleep(self.delay["mouse_click"])
+        self.send(f"mouse_button 0\n")
+        sleep(self.delay["mouse_click"])
+
+    def drag(self,x1,y1,x2,y2):
+        self.log.event(f"Dragging with mouse from {x1} {y1} to {x2} {y2}")
+        self.mouse_abs(x1,y1)
+        sleep(self.delay["mouse_move"])
+        self.send(f"mouse_button 1\n")
+        sleep(self.delay["mouse_click"])
+        self.mouse_abs(x2,y2)
+        sleep(self.delay["mouse_move"])
+        self.send(f"mouse_button 0\n")
+        sleep(self.delay["mouse_click"])
+
+    def screenshot(self,filename,log=True):
+        if log:
+            self.log.event(f"Writing screenshot to {filename}")
+        if filename[-4:]==".ppm":
+            # ppm is qemu's native format, zo just let qemu do the job
+            self.send(f"screendump {filename}\n")
+            sleep(self.delay["screenshot"])
+        else:
+            # Handle other formats via PILLOW
+            image=self.screenshot_image(log=False)
+            image.save(filename)
+            image.close()
+
+    def screenshot_image(self,mask=None,log=True):
+        (handle,filename)=mkstemp(".ppm","screenshot-", "/tmp")
+        os.close(handle)
+        os.remove(filename)
+        os.mkfifo(filename)
+        self.screenshot(filename,log=False)
+        fifo=open(filename,"rb")
+        imagedata=fifo.read()
+        fifo.close()
+        #print(f"Got {len(imagedata)} bytes")
+        bytesfh=BytesIO(imagedata)
+        imageobj=Image.open(bytesfh)
+        os.remove(filename)
+        if log:
+            self.log.event("Screenshot:")
+            self.log.image(imageobj)
+        return imageobj
+
+    def screenshot_diff(self,filename,mask=None,log=True):
+        saved_image=Image.open(filename)
+        self.apply_mask(saved_image,mask)
+        current_image=self.screenshot_image(log=log)
+        masked_current_image=current_image.copy()
+        self.apply_mask(masked_current_image,mask)
+        compare_result=(saved_image==masked_current_image)
+        #print(f"Compare result: {compare_result}")
+        if compare_result==False:
+            diff=ImageChops.difference(saved_image,masked_current_image)
+            box=diff.getbbox()
+            #print(f"Box: {box}")
+            if box==None:
+                compare_result=True
+            diff.close()
+        saved_image.close()
+        masked_current_image.close()
+        if compare_result==True:
+            current_image.close()
+            return None
+        if box!=None:
+            draw=ImageDraw.Draw(current_image)
+            draw.rectangle(box,None,ImageColor.getrgb("#ff0000"))
+            if log:
+                self.log.image(current_image)
+        return current_image
+
+    def wait_for_screen(self,filename,interval=5,timeout=30,mask=None,callback=None):
+        imagelog=[]
+        refimage=Image.open(filename)
+        now=datetime.now().timestamp()
+        imagelog.append({"name": filename, "timestamp": now, "image": refimage.copy()})
+
+        refimage.close()
+        check=0
+        while check<timeout:
+            result=self.screenshot_diff(filename,mask,log=False)
+            now=datetime.now().timestamp()
+            if result==None:
+                imagelog.append({"name": "Final", "timestamp": now, "image": self.screenshot_image(log=False)})
+                print(f"Check {check}: Screen is similar to {filename}")
+                self.log.tabs(imagelog)
+                return True
+            print(f"Check {check}: Screen is not similar to {filename}")
+            imagelog.append({"name": f"Check {check}", "timestamp": now, "image": result.copy()})
+            result.close()
+            if callback!=None:
+                callback()
+            sleep(interval)
+            check=check+1
+        now=datetime.now().timestamp()
+        imagelog.append({"name": "Final", "timestamp": now, "image": self.screenshot_image(log=False)})
+        self.log.tabs(imagelog)
+        return False
+            
+    def apply_mask(self,image,mask,color="#000000"):
+        if mask==None:
+            return
+        draw=ImageDraw.Draw(image)
+        if isinstance(mask,tuple):
+            mask=[mask]
+        if not isinstance(mask,list):
+            return
+        for item in mask:
+            if len(item)==3:
+                # 3 items: Draw circle
+                (x,y,r)=item
+                draw.circle((x,y),r,ImageColor.getrgb(color))
+            if len(item)==4:
+                (x1,y1,x2,y2)=item
+                if x1<0 and y1<0 and x2<0 and y2<0:
+                    # 4 negative items, mask everything except the rectangle
+                    draw.rectangle((0,0,10000,(y1*-1)),ImageColor.getrgb(color))
+                    draw.rectangle((0,0,(x1*-1),10000),ImageColor.getrgb(color))
+                    draw.rectangle((0,(y2*-1),10000,10000),ImageColor.getrgb(color))
+                    draw.rectangle(((x2*-1),0,10000,10000),ImageColor.getrgb(color))
+                else:
+                    # 4 positive items, mask rectangle
+                    draw.rectangle(item,ImageColor.getrgb(color))
+            if len(item)>4 and len(item)%2==0:
+                # A list of even amount of items, mask poligon
+                xylist=[]
+                for xy in range(0,len(item),2):
+                    xylist.append((item[xy],item[xy+1]))
+                draw.polygon(xylist,ImageColor.getrgb(color))
+