http://fr.droidcon.com/2014/agenda/ http://fr.droidcon.com/2014/agenda/detail?title=Porting+VLC+on+Android VLC is a free and open source cross-platform multimedia player and framework that plays most multimedia files, discs and streams. VLC runs on most platforms and is developed by volunteers. This talk will explain how we ported VLC to Android using the NDK, the issues we faced and how we solved most of them. It will also detail the future of VLC on the Android platform. Speaker : Jean-Baptiste Kempf, VideoLan Jean-Baptiste Kempf is the president of the VideoLAN non-profit organization and one of the main developers of VLC. Jean-Baptiste led some of the ports of VLC on mobile devices, including the Android port, and is the current release manager of VLC.

1. VideoLAN
VLC port to Android
Jean-Baptiste Kempf
mardi 23 septembre 2014

4. Ecole Centrale Paris

5. VIA
VIA Centrale Réseaux
➣ Campus student association
➣ Internet acces through RENATER
➣ Token Ring
Network Upgrade
➣ How to pay for our new network?
➣ How to justify the needs for a faster network?
➣ 1995 : let's do video streaming!
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6. Early history
1995 – 96 first project
➣ 2 years to complete
1998 project reboot
➢ Open Source
➢ Modularity
➢ Cross-Platform
➢ Network oriented
➢ Student project
2001 License Change
➣ ECP headmaster Agreement
➣ GPL v2 (or later)
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7. VideoLAN Projects
VideoLan Client, VLC media player, VLC
VideoLan Server, VLS (dead)
VLCS (dead)
libdvdcss (DVD CSS decryption)
libdts, libdca (DTS decoding)
x264 (H.264 encoding)
libdvbpsi (TS files management)
libdvdplay (dead)
libdvbcsa (dvb encryption decoding)
VLMA (VLC automation)
VLC Skin designer
libbluray, libaacs (BluRay playback)
DVBlast, Multicat (DVB streaming solution)
VLMC (Video editor)
x262, x265
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8. VideoLAN
Volunteers
VLC

9. Collaboration
Collaboration
➢ Teams meeting once per year
➢ Using git since early 2007
➢ Use of trac, phpBB and mediawiki and only FOSS
➢ IRC and Mailing Lists
VLC Contributors
➢ Core Team 5~10 people
➢ 700 over the lifetime
➢ 150 per year
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10. Association VideoLAN
Creation
➣ 2009, decided in the VDD '08
➣ Libre/Free Software and Multimedia
Members
➣ VLC's core developers
➣ Important members
Supports
➣ Hardware for development
➣ Travel, Servers, Legal
➣ VideoLAN Dev Days
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11. Open Source/Free Software
➢What is Open Source
➢ Cuisine
➢ Trust
➢ Study
➢What is Free Software
➢ 4 Freedoms
➢ Actual communities
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12. STUPIDITY At MAX
Stupidity level :
Over 9000

13. Rule #1
Rule #1
In multimedia, if there is a stupid way to do
something, someone will do it (badly) and
complain until it is standard and supported.

14. Rule #2
Rule #2
In multimedia, everyone thinks he
understands everything...
But actually noone does...

15. Multimedia : Everything is broken
NIH syndrom
42 ways !
Container
➣ All containers are between complete crap to somehow broken, except mp4 / mkv
➣ The worst are AVI, FLV and Ogg
Codec
➣ Many codecs have bad designs
➣ Most codecs are badly used when encoded
➣ Wrong containers
➣ Too many codecs and profiles
➣ Subtitles! Metadata!
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16. The Cone

17. VLC

19. 900 000 per day
More than 1.5B
over VLC lifetime
1 every 6 Mac
Top 15 Windows
Most used French
software

20. VLC
Support for DVDs
➣ Region independent
➣ Prevents forced subtitles (if desired)
… Blu Rays
➣ By default, non-encrypted only
… network streams
➣ Unicast, multicast, adaptive streaming
… external hardware
➣ Cameras, TV input, Satellite, ASI/SDI ...
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22. VLC 0.6.1

27. LibVLC
Engine
LGPL

28. VLC VLMC Applications
libVLC
libVLCcore
Decoder Theora Vorbis x264
Demuxer Mux Ogg MKV
Interface
Vout Aout Filters
Modules Modules Modules Modules

29. Architecture
Small Core
➣ libVLCCore
➣ Light
➣ Memory, Network and Thread handling
➣ Module loading
➣ Clock / Synchronization
Simple Multimedia Framework
➣ LibVLC
➣ bindings for C++, C#, Objective-C, Java,
lua, Perl and Python
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30. VLC
Completely modularized
➣ About 300 modules in a default installation
➣ Codecs, IO, outputs, (de)muxers, filters, ...
➣ Interested in adding new features ? Add a module.
820,000 lines of code
➣ 120k in the core
➣ 700k for modules
80 external librairies
➣ Codecs, Output, Effects, Network
➣ 7M lines of code
➣ 50 % C, 41 % C++
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31. Network-oriented graph
Subtitles
Codec
Protocol Format Video
Codec
Audio
Codec
Codec
MetaData
Video Output
Audio Output
Text Renderer
Video Filters
Audio Filters
Encoder Encoder
Muxer
Interfaces Stream
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32. Android
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33. VLC for Android
100 % Open Source
➢ 2.1+
Full video player
➢ All codecs, formats, protocols
➢ Hardware and multicore decoding
Full audio player
➢ Media library & Indexing
➢ Audio Background service
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34. Project start
➢ Start
➢ Free Nexus One
➢ Nov 2010
➢ First working version in Feb 2011
➢ GsoC
➢ Summer 2011
➢ First working UI
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35. Project start
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36. VLC for Android issues
➢ Shared Modules
➢ Bionic
➢ pthread
➢ wchar_t, off_t
➢ Audio modules
➢ lipsync
➢ YUV / RGB
➢ Size
➢ Arch
➢ FPU / NEON
Technical issues
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37. Release
Release in July 2012
➣ Beta on Google Play
➣ Limited countries
➣ ARMv7 only
➣ Numerous crashes
➣ Good feedback
➣ GPLv3
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38. 23 sept. 2014 Jean-Baptiste Kempf 39

39. Video
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40. Evolution
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41. Evolution
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42. Audio v2
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43. Video v2
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44. Release 1.0.0 !
➢ Numbers
➢ 37M installed
➢ 20M active
➢ Next
➢ Hardware acceleration
➢ OMX
➢ Mediacodec native
➢ SMB, UpnP, Facebook
➢ Android TV
➢ Android-L
Now
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45. Thank You
Jean-Baptiste Kempf
jb@videolan.org