From: bugtrack@alsa-project.org
To: alsa-devel@alsa-project.org
Subject: [ALSA - driver 0000457]: No AC3 via SPDIF possible
Date: Fri, 20 Aug 2004 18:13:18 +0200 (CEST) [thread overview]
Message-ID: <20040820161318.073111102F@server.perex-int.cz> (raw)
A BUGNOTE has been added to this bug.
======================================================================
https://bugtrack.alsa-project.org/alsa-bug/bug_view_page.php?bug_id=0000457
======================================================================
Reported By: nospam2000
Assigned To:
======================================================================
Project: ALSA - driver
Bug ID: 457
Category: PCI - ens1371
Reproducibility: always
Severity: feature
Priority: normal
Status: new
Distribution: Debian SID
Kernel Version: 2.6.6
======================================================================
Date Submitted: 08-20-2004 17:42 CEST
Last Modified: 08-20-2004 18:13 CEST
======================================================================
Summary: No AC3 via SPDIF possible
Description:
I have a onboard ES1371 soundcard with SPDIF output. It works fine with the
ALSA driver for analog and PCM output, even over SPDIF, but it is
impossible to play AC3 sound over the SPDIF output. Only a clicking noise
comes out of my speakers when I try this.
The problem is, that the raw data is modified by the sound chip and not
passed 1:1 to the SPDIF output. To get correct AC3 playback, the mixer and
the sample rate converter have to be bypassed. This means that
additionally to the bit ES_1373_SPDIF_THRU the bits ES_1373_RECEN_B and
ES_1373_BYPASS_P1/ES_1373_BYPASS_P2 have to be set to make AC3 playback
work.
======================================================================
----------------------------------------------------------------------
tiwai - 08-20-2004 18:13 CEST
----------------------------------------------------------------------
It's better to check the non-audio bit in the IEC958 status controls.
Does the attached patch work?
Bug History
Date Modified Username Field Change
======================================================================
08-20-04 17:42 nospam2000 New Bug
08-20-04 17:42 nospam2000 File Added: alsa_ens1371_ac3_003.diff
08-20-04 17:42 nospam2000 Distribution => Debian SID
08-20-04 17:42 nospam2000 Kernel Version => 2.6.6
08-20-04 17:51 nospam2000 Bug Monitored: nospam2000
08-20-04 18:13 tiwai Bugnote Added: 0001601
======================================================================
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next reply other threads:[~2004-08-20 16:13 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-20 16:13 bugtrack [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-09-24 11:39 [ALSA - driver 0000457]: No AC3 via SPDIF possible bugtrack
2004-08-26 15:59 bugtrack
2004-08-25 19:25 bugtrack
2004-08-25 9:10 bugtrack
2004-08-25 2:55 bugtrack
2004-08-23 13:46 bugtrack
2004-08-20 22:54 bugtrack
2004-08-20 15:43 bugtrack
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