Ubuntu
alsa-plugins package

alsa-plugins a52 module broken with libav

Bug #872871 reported by Rob Hall
14
This bug affects 2 people
Affects Status Importance Assigned to Milestone
alsa-plugins (Ubuntu)
Fix Released
Low
Daniel T Chen
Oneiric
Fix Released
Low
Daniel T Chen
Precise
Fix Released
Undecided
Unassigned

Bug Description

[Impact statement]
Due to changes in the ac3 encoder in libav the a52 alsa-plugin will no longer work in Oneric.

[Development fix] / [Stable fix]
Committed in r59 of http://bazaar.launchpad.net/~ubuntu-audio-dev/alsa-plugins/ubuntu.oneiric/revision/59. Already fixed in r2557 of http://anonscm.debian.org/viewvc/pkg-alsa?view=revision&revision=2557.

[Test case]
speaker-test -Da52 -c6
[ac3 @ 0x1c14000] Specified sample_fmt is not supported.

[Regression potential]
Low - This commit only touches the a52 plugin source, and as it will ship not working, it won't regress further.

[Original defect report]
A patch is available

http://git.alsa-project.org/?p=alsa-plugins.git;a=blobdiff;f=a52/pcm_a52.c;h=76f21cd003bfcfb8c3b07e003f04aca6132a7b79;hp=ed491b31c32a87a65258524b497d05d6e876fc0b;hb=40c129a160f37fe9488b2828d6299f99c269703e;hpb=06ca71522f1dc48b8503d945da81fdbcbab0aafa

See original description
Rob Hall (rhall-lincommander)
description: updated
Revision history for this message
Daniel T Chen (crimsun) wrote :

We actually need to conditionalize upon libav* version, so we need both commits from upstream.

Changed in alsa-plugins (Ubuntu):
assignee: nobody → Daniel T Chen (crimsun)
importance: Undecided → Low
status: New → In Progress
Daniel T Chen (crimsun)
description: updated
Revision history for this message
Martin Pitt (pitti) wrote : Please test proposed package

Hello Rob, or anyone else affected,

Accepted alsa-plugins into oneiric-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

Changed in alsa-plugins (Ubuntu Oneiric):
status: In Progress → Fix Committed
tags: added: verification-needed
Revision history for this message
Rob Hall (rhall-lincommander) wrote :

I've upgraded to the proposed package and built the a52 module from the package source without any issues. Thanks for the speedy resolution of this issue.

Revision history for this message
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in alsa-plugins (Ubuntu Precise):
status: New → Confirmed
Revision history for this message
Daniel T Chen (crimsun) wrote :

This was fixed in the merge for Precise.

Changed in alsa-plugins (Ubuntu Precise):
status: Confirmed → Fix Released
Revision history for this message
Daniel T Chen (crimsun) wrote :

I confirm that the fix in oneiric-proposed also resolves the reported symptom.

tags: added: verification-done
removed: verification-needed
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package alsa-plugins - 1.0.24-0ubuntu6.1

---------------
alsa-plugins (1.0.24-0ubuntu6.1) oneiric-proposed; urgency=low

  * debian/patches/0006-handle-new-libav.patch: Backport upstream git
    commits 40c129a and 826dafa so that the a52 plugin works again.
    (LP: #872871)
 -- Daniel T Chen <email address hidden> Wed, 12 Oct 2011 11:08:02 -0400

Changed in alsa-plugins (Ubuntu Oneiric):
status: Fix Committed → Fix Released
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