How VLC recognize CD and CDs with DTS?

[sybaselu]

At first, How VLC recognize CD and CDs with DTS? VLC can play CD and CDs with DTS. on the contrasty, other player can not play CDs and CDs with DTS in the same time. can you point out that the soucecode?
Secondly, How does VlC not only play generl CD but also play CDs with DTS?

[Gibalou]

A DTS bitstream contains specific markers so we just try to look for these.
As for the DTS decoding capability, it is based on libdts.

[sybaselu]

A DTS bitstream contain a specific markers? puzzle??? so how do you find the specific marker? where is the soucecode which look for the specific dts bitstream ? I also know dts bitstream decoder by libdts, how do you call the libs by function?
the key is where is the soucecode that look for the specific marker?

[sybaselu]

now that CDs with DTS contains specific marker bitstream, then what differents between DVD with DTS and CDs with DTS? what is the specfic marker on earth? can you tell me where is it in the sourcecode ?

[Sigmund]

the dts demux is located in modules/demux/dts.c. it will be tried first when playing a cd, and if it fails vlc will try the raw wav demux afterwards. For a dvd with dts the story is completly different. There the bitstreams are contained in an mpeg container format that tell quite clearly what different codecs and streams are available

[sybaselu]

CDs with DTS contains a specificl marker . the marker as specificl streambit ?, for example as Arbic Digtial (128). why VLC team do not rende hackerguide (or devel documents )for us from around the world. it well know that get others write programs is more diffcult than by myself, in particular , there have not documnet in hand.
for instance , Xine (a free Mediaplayer) provide a complete offcial doument hackguide .

[Sigmund]

just some pointers to get you started:

• http://developers.videolan.org/vlc/ The main developer page
  http://developers.videolan.org/vlc/vlc/ ... index.htmlOfficial developers documentation (chapter 1 and 6 at least are fairly up to date
  http://developers.videolan.org/vlc/vlc/ ... index.htmlAutogenerated API documentation (up to date, but with various degree of helpfulness. Important concepts are covered though)

Also have a look at the HACKING file in your sources.

All this said, I hope you respect that we keep on coding to create a good app, and don't spend too much time writing documentation that is bound to get outdated very soon anyway.