linux-kernel - [PATCH 0/2] ALSA: hda - support HDMI HBR passthrough

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1280831338-4596-1-git-send-email-anssi.hannula@iki.fi>
Date:	Tue,  3 Aug 2010 13:28:56 +0300
From:	Anssi Hannula <anssi.hannula@....fi>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] ALSA: hda - support HDMI HBR passthrough

Hi all!

This patchset adds support for passing through IEC 61937 encapsulated
compressed audio at high bitrates (i.e. those over 6.144Mbps).
At least TrueHD and DTS-HD are such formats.

I've tested this using an NVIDIA hdmi codec and the following ffmpeg
patch which adds support for TrueHD in its IEC 61937 muxer:
http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2010-August/094317.html

One needs to set the AES0 & 0x02 (non-audio) bit during playback so that
the data is not transmitted as normal 8 channel PCM audio.

---
Anssi Hannula (2):
      ALSA: hda - Set Stream Type in Stream Format according to AES0
      ALSA: hda - Add support for HDMI HBR passthrough

 sound/pci/hda/hda_codec.c       |    6 ++++-
 sound/pci/hda/hda_codec.h       |    6 ++++-
 sound/pci/hda/hda_intel.c       |    3 +-
 sound/pci/hda/patch_hdmi.c      |   40 ++++++++++++++++++++++++++++++++++++++-
 sound/pci/hda/patch_intelhdmi.c |    3 +-
 sound/pci/hda/patch_nvhdmi.c    |    3 +-
 6 files changed, 53 insertions(+), 8 deletions(-)

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/