Hello,
About two years ago in mailing list was submitted a patch for review
(http://lists.freedesktop.org/archives/pulseaudio-discuss/2013-June/017533.html
<http://lists.freedesktop.org/archives/pulseaudio-discuss/2013-June/017533.html>)
that allowed to set automatically dts/ac3 formats according to ELD for HDMI
attached displays/receivers. As I can see for some reasons patch wasn’t
integrated.
At the moment users that have displays or receivers capable to decode dts/ac3
streams should set this formats manually using cli or pavucontrol. Popular
distros doesn’t include pavucontrol by default and users should install it from
packages manually. Distro maintainers logic is reasonable: why we should
include in basic installation any additional sound control tools like
pavucontrol, when all modern Desktop Environments are their own tools for sound
control? Including several sound control tools is ambiguous user experience.
Sounds reasonable, but Desktop Environment tools are very basic and they do not
allow to fine tune many settings, like support of extra formats. This leads to
problem: users have hardware that supports ac3/dts decoding, but it doesn’t
recognized automatically by sound system, so they can't get it working without
additional non-obvious (for users) steps. Meanwhile sound systems in all major
OSes, like OSX and Windows, do recognize such hardware automatically and no
additional configuring is required, so any media application can passthrough
binary streams to receivers/displays in their default configuration.
Is something blocking to achieve same functionality in pulseaudio? Especially
that patch is already exists.
Regards,
Alexander
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