DTS Express

[MarcusJohnson91]

I'm adding support for DTS Express (extension LBR), and I was wondering if anyone has a sample I could test?

[Nevcairiel]

This m2ts clip contains a DTS Express stream. Extracting it didn't work on the first try, so I'll leave that to you. ;)

http://files.1f0.de/samples/amergang.sample.m2ts

[filler56789]

Here goes a mono sample, wrapped in a .WAV container. I will share a stereo sample and a 5.1 sample A.S.A.P.

http://www.mediafire.com/download/55m0747oz85tija/moovietrackdtsxwav.zip

[filler56789]

More samples:

http://www.mediafire.com/download/8ic045b8n567nir/DTSX-samples.zip

[filler56789]

It seems the task is much more complicated than I thought.
No E.T.A. then, I'm afraid ^.^;

[MarcusJohnson91]

Yes, it's far more complicated than I thought it would be, and inputting these damn tables is annoying as hell.

the guide is truly horrible, they don't even use the same variables to describe the same functionality from one page to the next.

I do have a question though, on page 192 and 193 of the white paper (version 1.4.1, idk about any other version) there are multiple tables, let's use rsdAmp for example

there's both an A and B section to rsdAmp, but I can't figure out if they're supposed to be two separate tables, or something like a 2d array, using very strange syntax?

Here's a screenshot so you can see what's going on without having to open the pdf

[Khan2014]

where could i find the pdf? THANQ

[MarcusJohnson91]

It's available here (PDF Warning)

[Nevcairiel]

Look at the getVariableParam function on page 159, its used to read from this table and explains how A and B are used.

In general it helps to actually check the pseudo-code on how tables are used to determine how to interpret them.

[MarcusJohnson91]

Nevermind, I see it. I was looking at that code the other day, but couldn't concentrate enough to know what the hell was happening

thanks for answering.

[mstevens83]

Is there any new progress on DTS Express support?
Anyway cool thing you guys are trying!

[MarcusJohnson91]

I kinda got stuck after parsing, I don't really understand how the samples are supposed to come out after you've decoded the frequency bands, and all the other organizational overhead.

Like, I just don't understand how the filter banks work.

[MarcusJohnson91]

Yes, I'm almost done @mstevens83 Just having trouble passing empty tables to the getVaraibleParam function, and need to clean it up a bit more.

[MarcusJohnson91]

I fixed the getVariableParam() issue, the solution is really just a bunch of if loops, but it gets the job done.

[mstevens83]

Nice work!

[filler56789]

Great news indeed THUMBS UP