libsixel

libsixel What is this? This package provides encoder/decoder implementation for DEC SIXEL graphics, and some converter programs. (https://youtu.be/0SasrQ7pnbA) SIXEL is one of image formats for printer and terminal imaging introduced by Digital Equipment Corp. (DEC). Its data scheme is represented as a terminal-friendly escape sequence. So if you want to view a SIXEL image file, all you have to do is "cat" it to your terminal. On 80's real hardware terminals, it tooks unbearable long waiting times to display images. But nowdays, with high-speed CPU and broadband network, we got the chance to develop a new scope of SIXELs. SIXEL Animation img2sixel(1) can decode GIF animation. Related projects Video streaming Now Youtube video streaming is available over SIXEL protocol by FFmpeg-SIXEL project. Above demo only uses 16 color registers. SDL integration: Gaming, Virtualization, ...etc. SDL1.2-SIXEL project makes enable you to operate various GUI applications on the terminal. You can play "The Battle for Wesnoth" over SIXEL protocol. You can run QEMU on SIXEL terminals. SDL1.2-SIXEL can collaborate with XSDL-SIXEL. Furthermore some information of SIXEL-ready SDL applications are reported. NetSurf (screenshot) Green PDF Viewer (screenshot) DOOM (tweet) firesdl (movie) Langage Bindings libsixel-python converter.py example depends on it. mruby-sixel Used by mruby-webcam. libsixel-p6 A perl6 bindings for libsixel sixel-sys Rust FFI bindings for libsixel sixel-rs A safe Rust wrapper for libsixel id-sixel Total Idris 2 bindings for libsixel W3M integration img2sixel(1) can be integrated with Debian's w3m(maintained by Tatsuya Kinoshita) that includes patches for -sixel option derived from Arakiken's w3m fork(remoteimg branch). @uobikiemukot's sdump project selected another approach. He wrote a w3mimgdisplay compatible program yaimg-sixel. It also works with ranger. X11 on SIXEL terminals Xsixel is a kdrive server implementation for SIXEL terminals. GNU Screen integration Arakiken's GNU Screen fork(sixel branch) works with SIXEL-supported applications including above products. This project is now in progress. GUI flavored SIXEL applications will integrated with existing terminal applications on it. See also on youtube. Twitter client integration Some NetBSD/OpenBSD users are doing amazing challenges. arakiken's mikutterm(mikutterm-sixel) Now mikutter + mikutterm works with libsixel inline-image extension. SIXEL works with old powerless machines such as NetBSD/luna68k (here is OMRON LUNA-II): NetBSD/hp300 (here is HP9000/425e): arakiken's tw(tw-sixel) arakiken's tw(tw-sixel) works with libsixel inline-image extension. SIXEL works with old powerless machines such as OpenBSD/luna88k (here is OMRON LUNA-88K2 MC88100@33MHz): sayaka-chan sayaka-chan(PHP version) works with libsixel inline-image extension. SIXEL works with old powerless machines such as NetBSD/x68k (here is SHARP X68030 with 060turbo): SIXEL works even in-kernel console. @isaki68k wrote a patch for ite(4). Other sixelSPAD screenshot Includes 2 commands fricas2sixel and latex2sixel. Neofetch Now sixel backend is implemented. See https://github.com/dylanaraps/neofetch/wiki/Image-Backends#sixel termplay Depends on sixel-sys, --converter=sixel option is supported. sixelPreviewer Simple scripts and development environment for realtime edit-previewing for dot, svg, markdown, ...etc. sdump A sixel image dumper, provides pdf previewer. RetroArch SIXEL video driver is provided if you build it with --enable-sixel option. (screenshot) Highlighted features Improved compression Former sixel encoders(such as ppmtosixel) are mainly designed for dot-matrix printers. They minimize the amount of printer-head movement distance. But nowadays this method did not represent the best performance for displaying sixel data on terminal emulators. SIXEL data for terminals were found in 80's Usenet, but the technology of how to create them seems to be lost. kmiya's sixel introduces the encoding method which is re-designed for terminal emulators to optimize the overhead of transporting SIXEL with keeping compatibility with former SIXEL terminal. Now libsixel and ImageMagick's sixel coder follow it. @arakiken, known as the maintainer of mlterm, describes about the way to generate high quality SIXEL, which is adopted by libsixel (http://mlterm.sourceforge.net/libsixel.pdf, in Japanese). High quality quantization img2sixel(1) supports color image quantization. It works well even if few number of colors are allowed. Terminal requirements If you want to view a SIXEL image, you have to get a terminal which support sixel graphics. Now SIXEL feature is supported by the following terminals. DEC VT series, VT240/VT241/VT330/VT340/VT282/VT284/VT286/VT382 DECterm(dxterm) Kermit ZSTEM 340 WRQ Reflection RLogin (Japanese terminal emulator) http://nanno.dip.jp/softlib/man/rlogin/ mlterm http://mlterm.sourceforge.net/ Works on each of X, WIN32 GDI, framebuffer, Android, Cocoa version. XTerm (compiled with --enable-sixel-graphics option) http://invisible-island.net/xterm/ You should launch xterm with "-ti vt340" option. The SIXEL palette is limited to a maximum of 16 colors. To avoid this limitation, Try $ echo "XTerm*decTerminalID: vt340" >> $HOME/.Xresources $ echo "XTerm*numColorRegisters: 256" >> $HOME/.Xresources $ xrdb $HOME/.Xresources $ xterm or $ xterm -xrm "XTerm*decTerminalID: vt340" -xrm "XTerm*numColorRegisters: 256" yaft https://github.com/uobikiemukot/yaft recterm (ttyrec to GIF converter) https://github.com/uobikiemukot/recterm seq2gif (ttyrec to GIF converter) https://github.com/saitoha/seq2gif Mintty (>= 2.6.0) https://mintty.github.io/ cancer https://github.com/meh/cancer/ MacTerm https://github.com/kmgrant/macterm wezterm https://github.com/wez/wezterm aminal https://github.com/liamg/aminal iTerm2 (>= 3.0.0) https://gitlab.com/gnachman/iterm2 st-sixel https://github.com/galatolofederico/st-sixel