libdca is a free library for decoding DTS Coherent Acoustics streams. The code was written by Gildas Bazin and based on the a52dec project. It is released under the terms of the GPL.
The DTS Coherent Acoustics standard (ETSI 102 114 v1.2.1), as published by the ETSI, is available here — look for “DTS Coherent Acoustics”.
BIG FAT WARNING: libdca is still in early development stage so don’t expect too much of it.
Right now, work is concentrated on finishing the implementation of the core part of the specification. The library should however already be quite usable.
A few things are still lacking but they should mainly affect low-bitrate DTS streams which don’t seem that common anyway (joint channels coding, dynamic range, etc. — see the TODO file).
There may be quality issues. None of the extensions (extra channels, 96/192 kHz sample rates) have been implemented (and unfortunately the public standard provides only minimal information on them).
Current release: libdca-0.0.6.tar.bz2.
git clone https://code.videolan.org/videolan/libdca
Provisional warning: DTS Inc. claims that use of libdca to decode DTS compressed sound data on a DVD could violate DTS’s patent rights. If you are unsure about the legality of using and distributing this code in your country, in particular in the USA, consult your lawyer before downloading it.
For support information, see the support page. A libdca-devel mailing list is also available — see the mailing lists page.
If you use libdca in another project, let us know!
Some very good samples are available on the Swedish radio website.
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