Subsurface (software)

For other uses, see Subsurface (disambiguation).
Subsurface
Original author(s) Linus Torvalds
Developer(s) Dirk Hohndel, Linus Torvalds, and many others
Initial release September 22, 2011 (2011-09-22)[1]
Stable release
4.5.5 / April 9, 2016 (2016-04-09)[2]
Written in C, C++, Bourne Shell, Perl
Operating system Linux, OS X, Windows, Android, iOS, (POSIX)
License GNU General Public License v2
Website subsurface-divelog.org

Subsurface is a software for logging and planning scuba dives. It was initially designed and developed by Linus Torvalds and Dirk Hohndel in 2011.[3]

Subsurface is free and open-source software distributed under the terms of the GNU General Public License version 2.[4]

Overview

Subsurface allows a scuba diver or free diver to keep track of their dive data. It allows to read out many different dive computers and represent this data both graphically (depth profile, gas usage) as well as tabularly. Pictures taken during the dive can be added to the log and the location of the dive site is displayed on a map. Decompression information based on the Bühlmann model or the VPM-B model as well as gas usage information can be displayed. The program also includes an interactive dive planner. The logbook can be exported in many file formats and to a Git-based cloud storage. There is a version running on mobile devices that can mainly display the log book while downloading dives from dive computers is currently not supported. [5]

Linus and Dirk do not bother with binaries for Linux kernel-based OS.

Until version 3.9.2, Subsurface used GTK+ for its graphical user interface and with version 4.0, Subsurface switched to Qt 4.[6] At the LCA2014, Torvalds and Hohndel explained why they choose to re-write the GUI using Qt.[7][8]

Subsurface further depends on GConf, SQLite, ATK and makes use of OpenStreetMap and/or OpenSeaMap.

Subsurface officially runs on Linux, OS X and Microsoft Windows. It is written using the POSIX API and not the Linux API, so it should be portable to any POSIX-compliant operating system. The mobile version using Qt Quick runs on Android and iOS.

As Subsurface binary software deployment for Linux users for the various Linux distributions turned out to be problematic,[9][10] the packaging was changed to a portable, self-contained, distro-agnostic AppImage in 2015.[11]

Supported dive computers

As of release 4.2 in August 2014, Subsurface supports the downloading and processing of dive log data from the following dive computers:[12]

See also

Wikimedia Commons has media related to Subsurface (software).

References

  1. ↑ "Subsurface release announcement". Retrieved 2014-05-12.
  2. ↑ "Announcing Subsurface 4.5.5 | Subsurface".
  3. ↑ "GitHub Subsurface v1.0 commit log". GitHub.com. Retrieved 2016-06-17.
  4. ↑ "Subsurface README file". GitHub.com. Retrieved 2016-06-17.
  5. ↑ "Subsurface User Manual". subsurface-divelog.org. Retrieved 2016-11-09.
  6. ↑ "Subsurface 4.0 has been released". 2013-12-15.
  7. ↑ "Gtk to Qt – a strange journey". 2014-01-09. Archived from the original on 2015-03-21.
  8. ↑ "Gtk to Qt – a strange journey Video" (WebM). YouTube. 2014-01-09.
  9. ↑ Linus Torvalds (2014-08-29). "Q&A with Linus Torvalds" (video). DebConf 2014 Portland. debian.net. Retrieved 2016-05-14. 6:31 I have seen this first hand with the other project I'm involved with, which is my dive log app. We make binaries for Windows and OSX, we basically don't make binaries for Linux. Why? Because making binaries for Linux desktop applications is a major fucking pain in the ass.
  10. ↑ This is just very cool. by Linus Torvalds on Google+ Dirk Hohndel: "I, as the app maintainer, don't want my app bundled in a distribution anymore. Way to much pain for absolutely zero gain. Whenever I get a bug report my first question is "oh, which version of which distribution? which version of which library? What set of insane patches were applied to those libraries?". No, Windows and Mac get this right. I control the libraries my app runs against. [...] With an AppImage I can give them just that. Something that runs on their computer."" (2015-11-25)
  11. ↑ This is just very cool. by Linus Torvalds on Google+ "I finally got around to play with the "AppImage" version of +Subsurface, and it really does seem to "just work"." (2015-11-25)
  12. ↑ "Supported Dive Computers | Subsurface".
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