[vlc-commits] mkv: Added EbmlTypeDispatcher

[Filip Roséen]

vlc | branch: master | Filip Roséen <filip at videolabs.io> | Tue Mar  8 15:11:53 2016 +0100| [421416d1472eb1444190aeb3ee2714617b5e7c23] | committer: Jean-Baptiste Kempf

mkv: Added EbmlTypeDispatcher

The EbmlTypeDispatcher is a type used to "dispatch" an object of type
EbmlElement* to an appropriate callback depending on the dynamic type of
the referred to object.

It can effectivelly replace the massive if-else branches found
throughout the module by not only making the code easier to understand
and maintain, but also by making it _a lot_ faster (benchmarks show a
speed increase between 450 and 700% in terms of lookup).

> http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=421416d1472eb1444190aeb3ee2714617b5e7c23
---

 modules/demux/Makefile.am             |    2 +
 modules/demux/mkv/Ebml_dispatcher.hpp |  161 +++++++++++++++++++++++++++++++++
 modules/demux/mkv/dispatcher.hpp      |  156 ++++++++++++++++++++++++++++++++
 3 files changed, 319 insertions(+)

Diff:   http://git.videolan.org/gitweb.cgi/vlc.git/?a=commitdiff;h=421416d1472eb1444190aeb3ee2714617b5e7c23