Bug 549726

Summary:	media-libs/libdcadec: ebuild request
Product:	Gentoo Linux	Reporter:	RumpletonBongworth <kfm>
Component:	New packages	Assignee:	Default Assignee for New Packages <maintainer-wanted>
Status:	RESOLVED OBSOLETE
Severity:	enhancement	CC:	aklhfex, anthonyryan1, chewi, media-video, mrawash
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://github.com/foo86/dcadec
See Also:	https://bugs.gentoo.org/show_bug.cgi?id=559348
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	libdcadec workaround

Description RumpletonBongworth 2015-05-17 14:14:28 UTC

dcadec is a free DTS Coherent Acoustics decoder. It is able to decode all core extensions (XCH, XXCH, XBR, X96) as well as the lossless extension (XLL). This is in contrast to libdca, which is only able to decode (lossy) DTS core streams without extensions.

The additional features of dcadec are of particular value to those working with DTS-HD MA streams, as supported by Blu-Ray.

At the time of writing, the latest upstream release of ffmpeg does not support dacdec. However, the next version probably will. ffmpeg-2.6.3 was based on a 2015-03-06 snapshot of the master branch, with dcadec support being added soon afterwards:-

https://git.videolan.org/?p=ffmpeg.git;a=commit;h=519868d

I haven't checked the status of libav.org but I expect that it will also support it soon.

To compile ffmpeg with support for the new decoder, it should be configured with --enable-libdcadec --disable-decoder=dca. The latter option should disable the stock decoder, which is based on libdca.

Comment 1 James Le Cuirot gentoo-dev

2015-08-02 12:28:36 UTC

The newest version of MakeMKV can make use of dcadec support in ffmpeg or libav. ffmpeg supports it as of 2.7 and libav as of 11.2.

Comment 2 Merder Kim 2015-10-11 21:00:40 UTC

Created attachment 414390 [details]
libdcadec workaround

Comment 3 Merder Kim 2015-10-11 21:01:45 UTC

Kodi-9999 needs libdcadec, so I've prepared temporary ebuild for it. I had to make some changes in original sources' build system, so this ebuild links to my own github repository. Normaly it shoud link to the Kerin's original repository - https://github.com/foo86/dcadec.

Comment 4 James Le Cuirot gentoo-dev

2015-10-11 21:15:53 UTC

Sorry but ebuilds under a BSD license aren't going to find their way into the tree in a hurry.

Comment 5 Scott Jones 2015-11-18 23:49:43 UTC

The ebuild license type is wrong, dcadec is licensed with LGPL2.1.  I haven't tested this ebuild, but I have tested the one in but 559348.  It looks like there are now 3 bug reports requesting this to be added.. each containing their own ebuild.

Comment 6 hal 2016-05-22 18:28:34 UTC

It's in the tree already. See https://packages.gentoo.org/packages/media-sound/dcadec

Comment 7 Andreas Sturmlechner gentoo-dev

2018-02-18 22:48:32 UTC

Thanks, I guess we can close this then.