Meeting called to order by Ira McDonald at 10am US Eastern. Minutes taken by Mike Sweet - many thanks!

Attendees

• Steve Algernon (Apple)
• Aveek Basu (Lexmark, OpenPrinting/GSoC 2020)
• Cihan Colakoglu (Kyocera)
• Zdenek Dohnal (Red Hat, OpenPrinting/GSoC 2020)
• Till Kamppeter (Canonical, OP Manager)
• Sean Kau (Google)
• Smith Kennedy (HP Inc, PWG Chair)
• Anna Khaitovich
• Aakash Lahoti (OpenPrinting/GSoC 2020)
• Jeremy Leber (Lexmark, PWG Vice-Chair)
• Jai Juthra (OpenPrinting/GSoC 2020)
• Ira McDonald (High North, PWG Secretary, OP Chair)
• Piotr Pawliczek
• Solomon Peachy (Gutenprint)
• Michael Rhines (Qualcomm)
• Michael Sweet (Lakeside Robotics, IPP WG Secretary)
• Michael Vrhel (Artifex)
• Bill Wagner (TIC)
• Rick Yardumian (Canon)

Agenda

• (1) OpenPrinting Plenary (Ira McDonald)
  https://ftp.pwg.org/pub/pwg/liaison/openprinting/presentations/op-plenary-may-2020-v1.pdf

  - Discussion
    - See slides
  
    - No questions
  

• (2) GSoC 2020 and Project Updates (Aveek Basu)
  https://ftp.pwg.org/pub/pwg/liaison/openprinting/presentations/OpenPrintingProjectUpdates_PWG-OPSummit-2020.pdf

  - Discussion
    - See slides
  
    - GSoC 2020 Projects - 7 projects/students - 14 mentors
      - Linux GUI application (can be part of GNOME printer tool) to admin MF devices 
        using IPP System Service
  
      - Common Print Dialog Backends (CPDB) Qt implementation
  
      - IPP Scan (or virtual MF device) server (Scanner Application)
  
      - General Printer Application SDK
  
      - Make Printer Applications configurable
  
      - Speed/scaling optimization of cups-browsed
  
      - Extract raster data from PDFs for direct printing
  
    - Linux Plumbers Conference 2019 - Lisbon, Portugal - 9-11 September 2019
      - OP mini-summit - Aveek, Till, and Rithvik as speakers
        - https://www.youtube.com/watch?v=0c_JaX4G7Zc
  
    - Linux Plumbers Conference 2020 - Halifax, CA - 25-27 August 2020
      - OP proposal for a mini-conference was submitted - Aveek and Till as speakers
        - https://www.linuxplumbersconf.org/
      
    - Linux Foundation - OP Community Bridge
      - opportunities for OP funding
        - https://funding.communitybridge.org/projects/open-printing
  

• (3) Printer Applications (Mike Sweet)
  https://ftp.pwg.org/pub/pwg/liaison/openprinting/presentations/printer-applications-may-2020.pdf

  - Discussion
    - See slides
  
    - ippeveprinter
      - Has Mike been running the IPP Everywhere self-certs tools against ippeveprinter?
        - Yes, this was useful in testing both the tools and improving ippeveprinter
  
    - LPrint
      - Some issues with USB access due to differing permissions between Linux distros
  
      - May need to standardize how to grant access to printer applications
  
    - PAPPL
      - Is it just for printer applications or general ipp server?
        - Can be general ipp server, but the focus is on printer applications
  
      - Is PAPPL Framework a full print server?
        - No, but not much of a delta between a good IPP implementation and a server
  
      - Is this the future direction envisioned for CUPS?
        - Yes
  

• (4) Ghostscript and MuPDF (Michael Vhrel)
  https://ftp.pwg.org/pub/pwg/liaison/openprinting/presentations/Open_Print_GS_MuPDF_2020.pdf

  - Discussion
    - See slides
  
    - MuPDF 1.17 released today (5 May 2020)
  
    - Mike Sweet to send Michael Vrhel a link to the three PDF 3D formats: U3D, PRC, 
      and STEP
  

• (5) ChromeOS Printing (Sean Kau)
  https://ftp.pwg.org/pub/pwg/liaison/openprinting/presentations/PWG%20Update%20May%202020%20-%20ChromeOS%20Printing%20v2.pdf

  - Discussion
    - See slides
  
    - What filters?
      - Foomatic RIP, cups-filter, some closed-source stuff
  
      - Not Gutenprint
  
    - Working on ippusbxd?
      - Not currently, not having the issues reported elsewhere but confirmed the bug
  
      - Considering rewriting in Rust
  
      - Apple has a (closed source) HTTP state monitor 
        - Mike Sweet will request if this HTTP state monitor can be made open source
  

• (6) cups-filters and other Open Printing Topics (Till Kamppeter)
  https://ftp.pwg.org/pub/pwg/liaison/openprinting/presentations/cups-filters-ippusbxd-2020.pdf

  - Discussion
    - See slides
  
    - Gutenprint question - How will this work?
      - Mike Sweet has talked with Robert Krawvitz and is mentoring the OP GSoC 2020 
        student
  
      - Mike Sweet will be working with the Gutenprint developers to develop the 
        Gutenprint printer application